CN220700658U - Circulation film press - Google Patents

Abstract

The utility model discloses a circulating film press, which comprises: the first box body is provided with a film pressing device and a drying device; the film pressing device comprises a film pressing driving roller, a first driving part for driving the film pressing driving roller to rotate, a film pressing driven roller, a tensioning roller, a second driving part for driving the tensioning roller to lift and a ring-shaped printing film, wherein the film pressing driving roller, the film pressing driven roller and the tensioning roller are parallel, and the ring-shaped printing film is sleeved on the film pressing driving roller, the film pressing driven roller and the tensioning roller simultaneously; the drying device is positioned between the film pressure driving roller and the film pressure driven roller; the second box body is internally provided with a conveying device for conveying the plate; the first box body can move up and down relative to the second box body so that the annular printing film can be closely attached to the upper surface of the plate on the conveying device; this annular printing membrane can cyclic utilization, avoids adopting the traditional printing mode of rolling and unreeling, guarantees the production quality of plate, improves work efficiency.

Description

Circulation film press

Technical Field

The utility model relates to the technical field of film presses, in particular to a circulating film press.

Background

In the current plate production link, after the plate surface of the plate is painted, the plate is subjected to film pressing through a film on a film press so as to print patterns on the film on the plate surface of the plate. The film on the existing film press gradually moves from the unreeling roller to the winding roller in the working process, so that workers are required to take the film off the winding roller at regular time and reinstall the film on the unreeling roller, and the positioning is required to be adjusted so that patterns on the film can be matched with plates, the conditions of pattern dislocation, missing printing and the like are avoided, and the production mode is complex in operation and low in working efficiency. Therefore, how to ensure the printing quality of the plate surface, improve the production efficiency and reduce the production cost is an urgent need of the current film pressing technology.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, the utility model proposes a circulating film press.

An embodiment of the present utility model provides a circulating film press including:

the first box body is provided with a film pressing device and a drying device; the film pressing device comprises a film pressing driving roller, a first driving part, a film pressing driven roller, a tensioning roller, a second driving part and an annular printing film, wherein the first driving part is used for driving the film pressing driving roller to rotate, the second driving part is used for driving the tensioning roller to lift, the film pressing driving roller, the film pressing driven roller and the tensioning roller are parallel, the film pressing driving roller and the film pressing driven roller are positioned on the same horizontal plane, the tensioning roller is positioned above the film pressing driving roller, and the annular printing film is sleeved on the film pressing driving roller, the film pressing driven roller and the tensioning roller at the same time; the drying device is positioned between the film pressure driving roller and the film pressure driven roller;

the second box body is positioned below the first box body, and a conveying device for conveying the plate is arranged in the second box body; the first box body can move up and down relative to the second box body so that the annular printing film can be tightly attached to the upper surface of the plate on the conveying device, and the drying device is used for drying the plate.

The circulating film press provided by the embodiment of the utility model has at least the following technical effects: before the conveying device conveys the plate, the second driving part drives the tensioning rod to move upwards to tension the annular printing film, and the first box body moves relative to the second box body in the up-down direction so that the outer surface of the annular printing film has enough clearance with the upper surface of the conveying device, and the outer surface of the annular printing film can be attached to the upper surface of the plate when the plate passes through the clearance; in the process of transporting the plate by the conveying device, the first driving part drives the film pressing driving roller to rotate so as to drive the annular printing film to rotate, when the plate passes through a gap between the annular printing film and the upper surface of the conveying device, the outer surface of the annular printing film is attached to the upper surface of the plate, and the moving direction and the moving speed of the annular printing film at the attached position are the same as the moving direction and the moving speed of the plate respectively, so that part of the outer surface of the annular printing film attached to the plate and the upper surface of the plate are relatively static, the upper surface of the plate is subjected to printing treatment, the annular printing film can be recycled, the annular printing film does not need to be replaced frequently, and the working efficiency is improved; the traditional printing mode of winding and unwinding is avoided, the need of repeated adjustment of the positioning between the film and the plate is avoided, and the production quality of the plate is ensured.

According to some embodiments of the present utility model, the conveying device includes a conveying driving roller, a conveying driven roller, an endless conveying belt, and a third driving member, where the endless conveying belt is sleeved on the conveying driving roller and the conveying driven roller at the same time, and the third driving member is used to drive the conveying driving roller to rotate so as to drive the endless conveying belt to rotate.

According to some embodiments of the utility model, the conveying device further comprises two outer supporting rollers, the two outer supporting rollers are all arranged in the inner cavity of the annular conveying belt in a penetrating mode, the outer peripheral wall of each outer supporting roller is abutted to the inner peripheral wall of the annular conveying belt and tightly supports the annular conveying belt, the two outer supporting rollers are parallel and are located on the same horizontal plane, the two outer supporting rollers are respectively located under the film pressure driving roller and the film pressure driven roller, and the film pressure driving roller is parallel to the outer supporting rollers.

According to some embodiments of the utility model, a main rod and an auxiliary rod are arranged in the first box body, the main rod is parallel to the auxiliary rod, the auxiliary rod is positioned above the main rod, bearing seats are arranged at two ends of the auxiliary rod, two ends of the tensioning rod are respectively connected with the two bearing seats in a rotating mode, the second driving part is fixedly arranged on the main rod, and the second driving part is used for driving the auxiliary rod to move in the up-down direction.

According to some embodiments of the utility model, the drying device comprises a drying box, a lamp shade, a drying lamp and a fourth driving component, wherein the drying box is fixed in the inner cavity of the first box body, the opening of the drying box faces downwards, the drying lamp is fixedly installed in the lamp shade, the lamp shade is positioned in the drying box, two ends of the lamp shade are rotatably connected to the drying box, and the fourth driving component is used for driving the lamp shade to rotate so that the opening of the lamp shade faces upwards or downwards.

According to some embodiments of the utility model, the drying cabinet is provided with a first fan for pumping air into the drying cabinet, and the drying cabinet is provided with an air outlet.

According to some embodiments of the utility model, the first housing is provided with a second fan for pumping air in the first housing to the outside.

According to some embodiments of the utility model, a dust-binding rubber roller is arranged in the first box body, the dust-binding rubber roller is parallel to the film pressure driving roller, and the outer peripheral surface of the dust-binding rubber roller is abutted against the outer peripheral surface of the annular printing film.

According to some embodiments of the utility model, two anti-deflection wheels are symmetrically arranged in the second box body, the anti-deflection wheels are connected to the second box body, the two anti-deflection wheels are respectively positioned at two ends of the conveying driven roller, the anti-deflection wheels are positioned below the axis of the conveying driven roller, the axis of the anti-deflection wheels inclines from top to bottom in a direction approaching to the middle of the conveying driven roller, and the outer peripheral surface of the anti-deflection wheels is in abutting connection with the outer peripheral surface of the annular conveying belt.

According to some embodiments of the present utility model, the first box is provided with a winding and unwinding device, and the winding and unwinding device includes an unwinding roller, a winding roller, a fifth driving component for driving the winding roller to rotate, a film winding and a plurality of flattening rollers; when the annular printing film is dismounted, the two ends of the rolled film are respectively wound on the unreeling roller and the reeling roller, the unreeling roller, the flattening roller and the film pressing driving roller are mutually parallel, the film pressing driving roller and the film pressing driven roller downwards compress the rolled film, and the flattening roller is used for tensioning the rolled film.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic illustration of the structure of a circulating film press according to some embodiments of the utility model;

FIG. 2 is a cross-sectional view of a circulating film press in accordance with some embodiments of the utility model;

FIG. 3 is a schematic view of a portion of a circulating film press according to some embodiments of the utility model;

FIG. 4 is a schematic view of a portion of a circulating film press according to some embodiments of the utility model;

FIG. 5 is a schematic view of a portion of a circulating film press according to some embodiments of the utility model;

FIG. 6 is a schematic diagram of a drying apparatus according to some embodiments of the present utility model;

fig. 7 is a schematic view of a lampshade according to some embodiments of the present utility model;

FIG. 8 is a schematic illustration of the attachment of an annular printed film according to some embodiments of the present utility model;

FIG. 9 is a schematic illustration of the attachment of a rolled film according to some embodiments of the utility model.

Reference numerals:

the first box 100, the main rod 110, the auxiliary rod 120, the bearing seat 121, the second fan 130, the dust-binding rubber roller 140, the unreeling roller 151, the reeling roller 152, the fifth driving part 153, the reeling film 154 and the flattening roller 155;

film pressing device 200, film pressing driving roller 210, first driving part 220, film pressing driven roller 230, tension roller 240, second driving part 250, and annular printing film 260;

drying device 300, drying box 310, lamp shade 320, drying lamp 330, fourth driving part 340, first fan 350, air outlet 360;

a second casing 400 and an anti-deviation wheel 410;

a conveying device 500, a conveying driving roller 510, a conveying driven roller 520, an endless conveying belt 530, a third driving member 540, and an outer supporting roller 550;

plate 600.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, plural means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and the above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Embodiments of the present utility model will be further described below with reference to the accompanying drawings.

According to some embodiments of the present utility model, referring to fig. 1, a circulating film press includes a first tank 100 and a second tank 400. Referring to fig. 2 to 4, a film pressing device 200 and a drying device 300 are provided in the first casing 100. Referring to fig. 2, 3 and 8, the film pressing apparatus 200 includes a film pressing driving roller 210, a first driving part 220 for driving the film pressing driving roller 210 to rotate, a film pressing driven roller 230, a tension roller 240, a second driving part 250 for driving the tension roller 240 to lift, and an endless printing film 260, the axial directions of the film pressing driving roller 210, the film pressing driven roller 230 and the tension roller 240 are all along the front-rear direction, the film pressing driving roller 210 and the film pressing driven roller 230 are on the same horizontal plane, the film pressing driving roller 210 is positioned at the left side of the film pressing driven roller 230, the tension roller 240 is positioned above the film pressing driving roller 210, and the endless printing film 260 is simultaneously sleeved on the film pressing driving roller 210, the film pressing driven roller 230 and the tension roller 240. The drying device 300 is located between the film pressure driving roller 210 and the film pressure driven roller 230. The second case 400 is positioned under the first case 100, and a conveying device 500 for conveying the plate 600 is provided in the second case 400; the first casing 100 can be moved in the up-down direction with respect to the second casing 400 so that the ring-shaped printed film 260 can be closely adhered to the upper surface of the plate 600 located on the transportation device. The drying device 300 can emit ultraviolet rays downward to dry the board 600 located on the transportation device.

Preferably, the first driving part 220 is a servo motor.

Referring to fig. 2 and 4, before the transporting device 500 transports the board 600, the second driving part 250 drives the tension rod 240 to move upward to tension the ring-shaped printed film 260, and the first casing 100 moves in the up-down direction with respect to the second casing 400 such that the outer surface of the ring-shaped printed film 260 has a sufficient gap with the upper surface of the transporting device so that the board 600 can pass through the gap, and such that the outer surface of the ring-shaped printed film 260 can be adhered to the upper surface of the board 600, thereby ensuring that the pattern on the ring-shaped printed film 260 can be accurately printed on the board 600.

Referring to fig. 2, 4 and 8, during the transportation of the board 600 by the transporting device 500, the board 600 moves from left to right, and the first driving part 220 drives the film pressing driving roller 210 to rotate, so as to drive the annular printing film 260 to rotate. When the plate 600 passes through the gap between the annular printing film 260 and the upper surface of the transporting device, the outer surface of the annular printing film 260 is gradually attached to the upper surface of the plate 600 until the upper surface of the plate 600 is completely covered by the annular printing film 260, and the moving direction and moving speed of the annular printing film 260 at the attaching position are the same as the moving direction and moving speed of the plate 600, respectively, so that the outer surface of the part of the annular printing film 260 attached to the plate 600 is relatively static to the upper surface of the plate 600, and the pattern on the annular printing film 260 can be accurately printed on the plate 600, thereby finishing the printing treatment on the upper surface of the plate 600. By analogy, the plurality of board 600 completes the printing process one by one under the transportation of the transportation device one by one.

It can be appreciated that the annular printing film 260 can be recycled, and the annular printing film 260 does not need to be replaced frequently, so that the working efficiency is improved; the traditional printing mode of winding and unwinding is avoided, the positioning cooperation between the film and the plate 600 is further avoided, and the production quality of the plate 600 is guaranteed.

In the process of moving the plate 600 from left to right with reference to fig. 8, the upper surface of the plate 600 is gradually covered with the annular printing film 260 from right to left. The annular printing film 260 has an initial line, and the movement rate of the annular printing film 260 and the plate 600 is adjusted so that the rightmost side of the upper surface of each plate 600 coincides with the initial line, thereby improving the production quality of the plate 600 and preventing the occurrence of pattern dislocation, missing printing and the like.

According to some embodiments of the present utility model, referring to fig. 2, the conveying apparatus 500 includes a conveying driving roller 510, a conveying driven roller 520, an endless conveying belt 530, and a third driving member 540, the axial directions of the conveying driving roller 510 and the conveying driven roller 520 are both front and rear directions, the conveying driving roller 510 and the conveying driven roller 520 have the same diameter and are on the same horizontal plane, the endless conveying belt 530 is simultaneously sleeved on the conveying driving roller 510 and the conveying driven roller 520, and the third driving member 540 is used for driving the conveying driving roller 510 to rotate so as to drive the endless conveying belt 530 to rotate.

Preferably, the third driving part 540 is a servo motor.

Preferably, referring to fig. 2, the conveying device 500 further includes two outer supporting rollers 550, wherein the two outer supporting rollers 550 are respectively disposed in the inner cavity of the endless conveyor belt 530 in a penetrating manner, the outer peripheral wall of the outer supporting roller 550 is abutted against the inner peripheral wall of the endless conveyor belt 530 and tightly supports the endless conveyor belt 530, the two outer supporting rollers 550 are parallel and on the same horizontal plane, and the axial direction of the outer supporting rollers 550 is the front-rear direction. The uppermost ends of the outer backup rollers 550 and the uppermost ends of the conveying drive rollers 510 are on the same horizontal plane to ensure that the conveying surface of the conveying device 500 is the horizontal plane, and the two outer backup rollers 550 are respectively positioned under the film pressure drive roller 210 and the film pressure driven roller 230, and the film pressure drive roller 210 is parallel to the outer backup rollers 550.

It will be appreciated that referring to fig. 2 and 8, when the board 600 moves from left to right, the board 600 is pressed downward by the endless conveyor 530 to perform pattern printing, and the outer support roller 550 can prevent the board 600 from pressing downward against the endless conveyor 530 to bend the endless conveyor 530 downward, and prevent the board 600 from having a downward movement amount due to the bending of the endless conveyor 530, thereby preventing distortion of the printed pattern on the board 600.

According to some embodiments of the present utility model, referring to fig. 2 and 4, a main lever 110 and an auxiliary lever 120 are provided in the first casing 100, the main lever 110 and the auxiliary lever 120 are parallel, the main lever 110 and the auxiliary lever 120 extend in the front-rear direction, both front and rear ends of the main lever 110 are fixedly connected to an inner wall of the first casing 100, the auxiliary lever 120 is positioned above the main lever 110, both ends of the auxiliary lever 120 are provided with bearing seats 121, both ends of a tension rod 240 are respectively rotatably connected to the two bearing seats 121, a second driving part 250 is fixedly installed to the main lever 110, and the second driving part 250 is used for driving the auxiliary lever 120 to move in the up-down direction so as to drive the tension rod 240 to move in the up-down direction, thereby tensioning or releasing the annular printing film 260.

Preferably, the second driving part 250 is a cylinder, a fixed end of which is fixedly installed to the main lever 110, and a moving end of which is connected to the sub-lever 120. Alternatively, the second driving part 250 is a push rod motor.

According to some embodiments of the present utility model, referring to fig. 2, 6 and 7, the drying apparatus 300 includes a drying box 310, a lamp housing 320, a drying lamp 330 and a fourth driving part 340, the drying box 310 is fixed to an inner cavity of the first housing 100, the drying box 310 is opened downward, the drying lamp 330 is fixedly installed to the lamp housing 320, the lamp housing 320 is positioned in the drying box 310, front and rear ends of the lamp housing 320 are rotatably connected to the drying box 310, and the fourth driving part 340 is used to drive the lamp housing 320 to rotate such that the opening of the lamp housing 320 is upward or downward.

Preferably, the fourth driving part 340 is a rotary cylinder.

As can be appreciated, when the fourth driving part 340 rotates the lamp housing 320 such that the opening of the lamp housing 320 is directed downward, the drying lamp 330 emits ultraviolet rays to dry the upper surface of the panel 600; when the fourth driving part 340 rotates the lamp housing 320 such that the opening of the lamp housing 320 is upward, the ultraviolet rays emitted from the drying lamps 330 cannot dry the panel 600.

It should be noted that, the high-power drying lamp 330 needs a certain on time, and the working efficiency can be improved by continuously turning on the drying lamp 330 and adopting the lamp shade 320 to control the drying lamp 330 to emit the ultraviolet lamp downwards.

According to some embodiments of the present utility model, referring to fig. 6, the drying box 310 is installed with a first fan 350, the first fan 350 is used to pump air into the drying box 310, and the drying box 310 is provided with an air outlet 360 to dissipate heat from an inner cavity of the drying box 310.

According to some embodiments of the present utility model, referring to fig. 2 and 3, the first casing 100 is installed with a second fan 130, and the second fan 130 is used to pump air in the first casing 100 to the outside to dissipate heat from the inner cavity of the first casing 100.

According to some embodiments of the present utility model, referring to fig. 2 and 3, a dust-sticking glue roller 140 is disposed in the first case 100, the dust-sticking glue roller 140 is parallel to the film pressing driving roller 210, the outer circumferential surface of the dust-sticking glue roller 140 abuts against the outer circumferential surface of the annular printing film 260, and the dust-sticking glue roller 140 can remove dust on the annular printing film 260, thereby avoiding the dust from affecting the printed pattern and improving the printing quality of the plate 600.

According to some embodiments of the present utility model, referring to fig. 5, two anti-deflection wheels 410 are symmetrically disposed in the second case 400, the anti-deflection wheels 410 are rotatably connected to the second case 400, the two anti-deflection wheels 410 are respectively located at front and rear ends of the conveying driven roller 520, the anti-deflection wheels 410 are located below an axis of the conveying driven roller 520, the axis of the anti-deflection wheel 410 located at the front side is inclined from top to bottom to the rear side, the axis of the anti-deflection wheel 410 located at the rear side is inclined from top to bottom to the front side, an outer circumferential surface of the anti-deflection wheel 410 abuts against an outer circumferential surface of the endless conveyor belt 530, and the anti-deflection wheels 410 can prevent the endless printing film 260 from deflecting during rotation to affect printing quality.

According to some embodiments of the present utility model, referring to fig. 2 and 9, the first casing 100 is provided with a winding and unwinding device including an unwinding roller 151, a winding roller 152, a fifth driving part 153 for driving the winding roller 152 to rotate, a film roll 154, and a plurality of flattening rollers 155; the axial directions of the wind-up roller 152 and the wind-down roller 151 are both the front-rear direction.

It will be appreciated that the circulating film press retains the conventional printing pattern and the user can choose to use either a circulating printing pattern of the annular printed film 260 or a web-fed printing pattern. When the winding and unwinding printing mode is adopted, the annular printing film 260 is dismounted, two ends of the rolled film 154 are respectively wound on the winding roller 151 and the winding roller 152, the winding roller 151, the flattening roller 155 and the film pressing driving roller 210 are parallel to each other, the film pressing driving roller 210 and the film pressing driven roller 230 are both used for pressing the rolled film 154 downwards, and the flattening roller 155 is used for tensioning the rolled film 154.

Referring to fig. 9, when the plate 600 moves from right to left, the unwinding roller 151 rotates, the plate 600 gradually sticks to the upper surface of the plate 600 through the gap between the film roll 154 and the upper surface of the transporting means until the upper surface of the plate 600 is completely covered by the film roll 154, and the moving direction and moving speed of the film roll 154 at the stick are the same as the moving direction and moving speed of the plate 600, respectively, so that the lower surface of the portion of the film roll 154 attached to the plate 600 is relatively stationary with the upper surface of the plate 600, and the pattern on the film roll 154 can be accurately printed on the plate 600, thereby completing the printing process on the upper surface of the plate 600.

Preferably, the fifth driving part 153 is a servo motor.

In the description of the present specification, reference to the term "some embodiments" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A circulating film press comprising:

a first box body (100) provided with a film pressing device (200) and a drying device (300); the film pressing device (200) comprises a film pressing driving roller (210), a first driving component (220) for driving the film pressing driving roller (210) to rotate, a film pressing driven roller (230), a tensioning roller (240), a second driving component (250) for driving the tensioning roller (240) to lift and a ring-shaped printing film (260), wherein the film pressing driving roller (210), the film pressing driven roller (230) and the tensioning roller (240) are parallel, the film pressing driving roller (210) and the film pressing driven roller (230) are positioned on the same horizontal plane, the tensioning roller (240) is positioned above the film pressing driving roller (210), and the ring-shaped printing film (260) is sleeved on the film pressing driving roller (210), the film pressing driven roller (230) and the tensioning roller (240) at the same time; the drying device (300) is positioned between the film pressure driving roller (210) and the film pressure driven roller (230);

the second box body (400) is positioned below the first box body (100), and a conveying device (500) for conveying the plate (600) is arranged in the second box body (400); the first casing (100) is movable in an up-down direction with respect to the second casing (400) so that the annular printing film (260) can be closely attached to the upper surface of the board (600) on the conveyor, and the drying device (300) is used for drying the board (600).

2. The circulating film press of claim 1, wherein the conveying device (500) comprises a conveying driving roller (510), a conveying driven roller (520), an annular conveying belt (530) and a third driving component (540), the annular conveying belt (530) is sleeved on the conveying driving roller (510) and the conveying driven roller (520) at the same time, and the third driving component (540) is used for driving the conveying driving roller (510) to rotate so as to drive the annular conveying belt (530) to rotate.

3. The circulating film press according to claim 2, wherein the conveying device (500) further comprises outer supporting rollers (550), two outer supporting rollers (550) are all arranged in the inner cavity of the annular conveying belt (530) in a penetrating mode, the outer peripheral wall of each outer supporting roller (550) is abutted to the inner peripheral wall of the annular conveying belt (530) and tightly supports the annular conveying belt (530), the two outer supporting rollers (550) are parallel and are located on the same horizontal plane, the two outer supporting rollers (550) are respectively located under the film pressing driving roller (210) and the film pressing driven roller (230), and the film pressing roller (210) is parallel to the outer supporting rollers (550).

4. The circulating film press according to claim 1, wherein a main rod (110) and an auxiliary rod (120) are arranged in the first box body (100), the main rod (110) and the auxiliary rod (120) are parallel, the auxiliary rod (120) is located above the main rod (110), bearing seats (121) are respectively arranged at two ends of the auxiliary rod (120), two ends of the tensioning rod (240) are respectively connected to the two bearing seats (121) in a rotating mode, the second driving component (250) is fixedly installed on the main rod (110), and the second driving component (250) is used for driving the auxiliary rod (120) to move along the up-down direction.

5. The circulating film press of claim 1, wherein the drying apparatus (300) comprises a drying oven (310), a lamp housing (320), a drying lamp (330) and a fourth driving part (340), the drying oven (310) is fixed in the inner cavity of the first oven body (100), the drying oven (310) is downward in opening, the drying lamp (330) is fixedly installed in the lamp housing (320), the lamp housing (320) is located in the drying oven (310), two ends of the lamp housing (320) are rotatably connected to the drying oven (310), and the fourth driving part (340) is used for driving the lamp housing (320) to rotate so that the opening of the lamp housing (320) is upward or downward.

6. The circulating film press of claim 5, wherein the drying oven (310) is equipped with a first fan (350), the first fan (350) being used for pumping air into the drying oven (310), the drying oven (310) being provided with an air outlet (360).

7. The circulating film press of claim 1, wherein the first casing (100) is mounted with a second fan (130), and the second fan (130) is used for pumping air in the first casing (100) to the outside.

8. The circulating film press of claim 1, wherein a dust-sticking glue roller (140) is disposed in the first case (100), the dust-sticking glue roller (140) is parallel to the film press driving roller (210), and an outer peripheral surface of the dust-sticking glue roller (140) abuts against an outer peripheral surface of the annular printing film (260).

9. The circulating film press according to claim 2, wherein two anti-deflection wheels (410) are symmetrically arranged in the second box body (400), the anti-deflection wheels (410) are rotatably connected to the second box body (400), the two anti-deflection wheels (410) are respectively positioned at two ends of the conveying driven roller (520), the anti-deflection wheels (410) are positioned below the axis of the conveying driven roller (520), the axis of the anti-deflection wheels (410) is inclined from top to bottom in a direction approaching to the middle of the conveying driven roller (520), and the outer peripheral surface of the anti-deflection wheels (410) is in butt joint with the outer peripheral surface of the annular conveying belt (530).

10. The circulating film press according to claim 1, characterized in that the first box (100) is provided with a winding and unwinding device comprising an unwinding roller (151), a winding roller (152), a fifth driving member (153) for driving the winding roller (152) to rotate, a film (154) and a plurality of flattening rollers (155); when the annular printing film (260) is dismounted, two ends of the coiled film (154) are respectively wound on the unreeling roller (151) and the reeling roller (152), the unreeling roller (151), the flattening roller (155) and the film pressing driving roller (210) are parallel to each other, the film pressing driving roller (210) and the film pressing driven roller (230) are respectively pressed down on the coiled film (154), and the flattening roller (155) is used for tensioning the coiled film (154).