A bridge tectorial membrane machine

Abstract

The utility model belongs to laminating machine technical field especially relates to a bridge type laminating machine, include: shell, be set up with groove three and groove two in the shell, U type frame, U type frame sliding installation is in the groove two, two compression rollers two are rotationally installed in the U type frame, two compression rollers one are rotationally installed in the shell, and two compression rollers one are located in the just below of two compression rollers two respectively, the sliding installation of sliding plate is in the groove three, the top of sliding plate is engraved with scale line one, the top of sliding plate and the symmetry of scale line one one end set up two sliding slots, limiting block, limiting block sliding installation is between two sliding slots, the top of limiting block rotationally installs two bolts, the whole device can complete double -sided laminating one time, has improved the laminating efficiency of paper greatly, can adjust according to the paper of different size simultaneously, so that can carry out laminating to the paper of different size, can satisfy the diversified business demand.

Description

TECHNICAL FIELD

[0001] The utility model belongs to laminating machine technical field especially relates to a bridge laminating machine. BACKGROUND

[0002] The bridge laminating machine is a kind of equipment for covering a layer of plastic film on the surface of printed matter, and the plastic film and paper are combined together by rubber roller and heating roller after being pressed, to form paper-plastic combined product.The bridge laminating machine is mainly divided into two categories of coating type laminating machine and pre-coating type laminating machine.

[0003] At present, the bridge laminating machine on the market, and in the process of using, most of the following shortcomings exist: the bridge laminating machine on the market can usually only coat the paper needing to be laminated on one side, and when the paper needs to be laminated on both sides, it can only coat one side of the paper first, and then coat the other side of the paper for the second time, which greatly reduces the lamination efficiency of the paper, and at the same time, the bridge laminating machine on the market can only process fixed-size paper, and cannot be adjusted according to paper of different sizes, so it is difficult to meet the diversified business needs.In view of this, we propose a bridge laminating machine. UTILITY MODEL CONTENTS

[0004] The utility model is to provide a kind of bridge laminating machine to solve the problems raised in the above background.

[0005] Therefore, the utility model provides a kind of bridge laminating machine, comprising:

[0006] The shell is provided with groove three and groove two inside;

[0007] The U-shaped frame is slidably installed in the groove two, two compression rollers two are rotatably installed in the U-shaped frame, two compression rollers one are rotatably installed in the shell, and the two compression rollers one are located directly below the two compression rollers two respectively, a sliding plate is slidably installed in the groove three, a scale line one is marked on the top of the sliding plate, two sliding grooves are symmetrically formed on the top of the sliding plate and at one end of the scale line one;

[0008] The limiting block is slidably installed between the two sliding grooves, two bolts are rotatably installed on the top of the limiting block, one end of the two bolts penetrates the limiting block and extends into the two sliding grooves respectively, groove one is formed in the shell and located on the upper and lower sides of the sliding plate, a cylindrical is movably installed in each of the two grooves one, a scale line two is marked on each of the two cylindrical, and a limiting ring is sleeved on each of the two cylindrical, a threaded column is rotatably installed on the circumferential wall of each of the two limiting rings, and one end of the two threaded columns penetrates the two limiting rings respectively and contacts the surface of the two cylindrical respectively;

[0009] Two heating rollers, both of which are rotatably installed in the shell and are located on the sides of the two cylinders, and the sliding plate is located between the two heating rollers;

[0010] A lifting assembly is located in the shell and is used to drive the U-shaped frame to move up and down;

[0011] A power assembly is located on the shell and is used to drive the two compression rollers to rotate together.

[0012] In the technical solution, the cooperation of the shell, the sliding plate, the U-shaped frame, the limiting block, the cylinder, the bolt, the threaded column, the limiting ring, the heating roller, the compression roller two, the compression roller one, the lifting assembly, and the power assembly can complete double-sided film covering at one time, greatly improving the film covering efficiency of the paper, and the size of the paper can be adjusted according to different sizes, and different sizes of paper can be covered to meet diversified business needs.

[0013] In the above technical solution, further, the lifting assembly comprises:

[0014] A threaded rod is rotatably installed on the U-shaped frame, and the top end of the threaded rod penetrates the top surface of the shell and extends to the outside.

[0015] In the technical solution, the threaded rod is rotated under the action of the thread, the U-shaped frame is driven by the threaded rod to move upwards, the two compression rollers two are driven by the U-shaped frame moving upwards to move upwards, a large gap is generated between the two compression rollers two and the two compression rollers one, and the threaded rod is reversely rotated under the action of the thread, the U-shaped frame is driven by the threaded rod to move downwards, and the two compression rollers two are driven by the U-shaped frame moving downwards to move downwards until the surfaces of the two compression rollers two and the two compression rollers one are pressed.

[0016] In the above technical solution, further, the threaded rod is threadedly connected with the shell.

[0017] In the technical solution, the threaded rod can slide up and down on the shell under the action of the thread.

[0018] In the above technical solution, further, the power assembly comprises:

[0019] A bearing plate is fixedly installed on one side of the shell, and a motor is fixedly installed on the bearing plate, the output shaft of the motor penetrates one side of the shell and is coaxially connected with one of the compression rollers one, a gear one is fixedly installed on the output shaft of the motor and located on one side of the shell, one end of the other compression roller one penetrates one side of the shell and extends to the outside and is fixedly installed with a gear three, and a gear two is rotatably installed on one side of the shell and located between the gear one and the gear three.

[0020] In the technical solution, the motor is connected to the power supply and started, the output shaft of the motor continuously drives one of the compression rollers to rotate, and the output shaft of the motor also drives the gear one to rotate, under the meshing action, the rotating gear one drives the gear two to rotate, and the rotating gear two drives the gear three to rotate, the rotating gear three drives the other compression roller to rotate, and under the pressure, the two rotating compression rollers one and the two rotating compression rollers two extrude the two layers of films and drive the two layers of films to move towards the direction of the baffle, and the two layers of films moving towards the direction of the baffle drive the two film winding rollers to rotate, and the two layers of films are driven by the rotating film winding rollers to rotate, and the adhesive surfaces of the two layers of films contact the surfaces of the two heating rollers respectively, so that the adhesive surfaces of the two layers of films are heated by the two heating rollers respectively, and the adhesive surfaces of the two layers of films have high viscosity.

[0021] In the above technical solution, further, the output shaft of the motor is rotatably connected with the shell, and the gear two is meshed with the gear one and the gear three.

[0022] In the technical solution, the output shaft of the motor can rotate normally on the shell, the gear one can drive the gear two to rotate, and the gear two can drive the gear three to rotate.

[0023] In the above technical solution, further, the technical solution further comprises:

[0024] The baffle is fixedly installed in the shell and located on one side of the other compression roller one, the other compression roller one is located between one of the compression rollers one and the baffle, the baffle has an inclined structure, and the inclination angle of the baffle is 10-15°.

[0025] In the technical solution, the coated paper can slide forward along the inclination angle of the baffle, and will not be blocked at the outlet of the whole device.

[0026] In the above technical solution, further, the cylinder is slidably connected with the limiting ring, the bolt is threadedly connected with the limiting block, the threaded column is threadedly connected with the limiting ring, and the cross sections of the two sliding grooves have isosceles trapezoidal structures.

[0027] In the technical solution, the limiting ring can slide normally on the cylinder, the rotating bolt can slide up and down on the limiting block under the action of the thread, the rotating threaded column can slide left and right on the limiting ring under the action of the thread, and the limiting block will not fall off the sliding plate.

[0028] The beneficial effects of the utility model are:

[0029] The bridge type laminating machine can complete double-side laminating at one time, greatly improves the laminating efficiency of paper, can be adjusted according to paper of different sizes, can laminating paper of different sizes, and can meet diversified business demands. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a whole structure schematic view of the utility model;

[0031] Figure 2 It is a detailed internal structure schematic view of the shell in the utility model;

[0032] Figure 3 It is a detailed internal structure schematic view of the shell in the utility model Figure 2 It is an enlarged structure schematic view of A in the utility model;

[0033] Figure 4 It is a detailed internal structure schematic view of the shell in the utility model;

[0034] Figure 5 It is a region structure schematic view of the slide plate in the utility model;

[0035] Figure 6 It is a shell cross-section structure schematic view in the utility model;

[0036] Figure 7 It is a region structure schematic view of the limiting block in the utility model.

[0037] The marks in the drawing represent:

[0038] 1, shell; 2, threaded rod; 3, cylinder; 5, threaded column; 6, groove one; 7, heating roller; 8, slide plate; 10, bolt; 11, sliding groove; 12, bearing plate; 13, motor; 14, gear one; 15, gear two; 16, gear three; 18, baffle; 19, compression roller one; 20, compression roller two; 23, limiting ring; 24, limiting block; 25, groove two; 26, groove three. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the application will be clearly described below with reference to the drawings in the embodiments of the application. The described embodiments are part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the application.

[0040] In the description of the present application, it should be noted that the terms used herein are merely for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. For the purpose of description, the dimensions of the various parts shown in the drawings are not drawn in proportion to the actual proportions. The techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limiting. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0041] It should be noted that the terms "first", "second", and the like in the description and claims of the present application are used to distinguish similar objects, and are not intended to describe a particular order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a class, not limited to the number of objects, for example, the first object can be one or more. In addition, the specification and claims "and / or" indicate at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are an "or" relationship.

[0042] It should be noted that in the description of the present application, the orientation or position relationship indicated by the orientation terms such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is generally based on the orientation or position relationship shown in the drawings, only for the purpose of describing the present application and simplifying the description, without the opposite indication, these orientation terms do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation terms "inner, outer" refer to the inner and outer relative to the contour of each component.

[0043] It should be noted that in this application, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent in such process, method, article, or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus including the element. In addition, it should be pointed out that the scope of the methods and apparatus in the embodiments of the present application is not limited to the order of performing the functions shown or discussed, but can also include performing the functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0044] Embodiment 1:

[0045] Please refer to Figures 1-7 The embodiment provides a bridge type film laminating machine, which comprises:

[0046] A shell 1, a groove three 26 and a groove two 25 are formed in the shell 1;

[0047] A U-shaped frame 17 is slidingly installed in the groove two 25, two compression rollers two 20 are rotatably installed in the U-shaped frame 17, two compression rollers one 19 are rotatably installed in the shell 1, and the two compression rollers one 19 are located directly below the two compression rollers two 20, a sliding plate 8 is slidingly installed in the groove three 26, a scale line one is marked on the top of the sliding plate 8, and two sliding grooves 11 are symmetrically formed on the top of the sliding plate 8 and at one end of the scale line one;

[0048] A limiting block 24 is slidingly installed between the two sliding grooves 11, two bolts 10 are rotatably installed on the top of the limiting block 24, one end of the two bolts 10 penetrates through the limiting block 24 and extends into the two sliding grooves 11 respectively, a groove one 6 is formed in the shell 1 and located on the upper and lower sides of the sliding plate 8, a cylinder 3 is movably installed in each of the two groove ones 6, a scale line two is marked on each of the two cylinders 3, and a limiting ring 23 is sleeved on each of the two cylinders 3, a threaded column 5 is rotatably installed on the circumferential wall of each of the two limiting rings 23, and one end of the two threaded columns 5 penetrates through the two limiting rings 23 and respectively contacts the surface of the two cylinders 3;

[0049] Two heating rollers 7 are rotatably installed in the shell 1, and the two heating rollers 7 are located on one side of the two cylinders 3, and the sliding plate 8 is located between the two heating rollers 7;

[0050] The lifting assembly is located in the shell 1 and is used to drive the U-shaped frame 17 to move up and down.

[0051] The power assembly is located on the shell 1 and is used to drive the two compression rollers I 19 to rotate in the same direction.

[0052] Wherein, through the cooperation of the shell 1, the sliding plate 8, the U-shaped frame 17, the limiting block 24, the cylinder 3, the bolt 10, the threaded column 5, the limiting ring 23, the heating roller 7, the compression roller II 20, the compression roller I 19, the lifting assembly and the power assembly, the double-sided film covering can be completed at one time, the film covering efficiency of the paper is greatly improved, and the paper of different sizes can be adjusted and covered, thereby meeting diversified business demands.

[0053] Embodiment 2:

[0054] The embodiment provides a bridge type film laminating machine, in addition to the technical scheme of the above-mentioned embodiment, further has the following technical features, the lifting assembly comprises:

[0055] The threaded rod 2 is rotatably installed on the U-shaped frame 17, and the top end of the threaded rod 2 penetrates the top surface of the shell 1 and extends to the outside.

[0056] Wherein, ensure that under the action of the thread, rotate the threaded rod 2, so that the threaded rod 2 drives the U-shaped frame 17 to move upwards, and then the U-shaped frame 17 moving upwards drives the two compression rollers II 20 to move upwards, so that the two compression rollers II 20 and the two compression rollers I 19 generate a large gap, and at the same time, under the action of the thread, the threaded rod 2 is reversely rotated, so that the threaded rod 2 drives the U-shaped frame 17 to move downwards, and then the U-shaped frame 17 moving downwards drives the two compression rollers II 20 to move downwards, until the two compression rollers II 20 and the two compression rollers I 19 are extruded.

[0057] Embodiment 3:

[0058] The embodiment provides a bridge type film laminating machine, in addition to the technical scheme of the above-mentioned embodiment, further has the following technical features, the threaded rod 2 is in threaded connection with the shell 1.

[0059] Wherein, ensure that under the action of the thread, the threaded rod 2 can slide up and down on the shell 1.

[0060] Embodiment 4:

[0061] The embodiment provides a bridge type film laminating machine, in addition to the technical scheme of the above-mentioned embodiment, further has the following technical features, the power assembly comprises:

[0062] The bearing plate 12 is fixedly installed on one side of the shell 1, and the motor 13 is fixedly installed on the bearing plate 12. The output shaft of the motor 13 penetrates one side of the shell 1 and is coaxially connected with one of the pressure rollers 19. The gear one 14 is fixedly installed on the output shaft of the motor 13 and located on one side of the shell 1. The gear three 16 is fixedly installed on one end of the other pressure roller 19 and extends to the outside through one side of the shell 1. The gear two 15 is rotatably installed on one side of the shell 1 and located between the gear one 14 and the gear three 16.

[0063] The motor 13 is connected to the power supply and started. The output shaft of the motor 13 continuously drives one of the pressure rollers 19 to rotate. The output shaft of the motor 13 also drives the gear one 14 to rotate. Under the meshing action, the rotating gear one 14 drives the gear two 15 to rotate. The rotating gear two 15 drives the gear three 16 to rotate. The rotating gear three 16 drives the other pressure roller 19 to rotate. Under the pressure, the two rotating pressure rollers 19 and the two rotating pressure rollers 20 extrude the two layers of film and drive the two layers of film to move towards the baffle 18. The two layers of film moving towards the baffle 18 pull the two film rolls to rotate. The rotating film rolls drive the two cylinders 3 to rotate. The adhesive surfaces of the two layers of film contact the surfaces of the two heating rollers 7, respectively. The adhesive surfaces of the two layers of film are heated by the two heating rollers 7, respectively, so that the adhesive surfaces of the two layers of film have greater adhesion.

[0064] Embodiment 5:

[0065] The embodiment provides a bridge type film laminating machine. In addition to the technical solutions of the above-mentioned embodiments, the motor 13 is rotatably connected with the shell 1. The gear two 15 is meshed with the gear one 14 and the gear three 16.

[0066] The output shaft of the motor 13 can normally rotate on the shell 1. The gear one 14 can drive the gear two 15 to rotate. The gear two 15 can drive the gear three 16 to rotate.

[0067] Embodiment 6:

[0068] The embodiment provides a bridge type film laminating machine. In addition to the technical solutions of the above-mentioned embodiments, the following technical features are further included.

[0069] The baffle 18 is fixedly installed in the shell 1 and located on one side of the other pressure roller 19. The other pressure roller 19 is located between one of the pressure rollers 19 and the baffle 18. The baffle 18 has an inclined structure, and the inclination angle of the baffle 18 is 10-15°.

[0070] Wherein, ensure that the paper after coating can slide along the inclined angle of the baffle 18, will not be blocked at the outlet of the overall device.

[0071] Embodiment 7:

[0072] The embodiment provides a bridge type laminating machine, in addition to comprising the technical scheme of the above embodiment, further has the following technical features, the cylindrical 3 and the limiting ring 23 sliding connection, bolt 10 and limiting block 24 screw connection, threaded column 5 and limiting ring 23 screw connection, the cross section of two sliding grooves 11 is isosceles trapezoidal structure.

[0073] Wherein, ensure that the limiting ring 23 can normally slide on the cylindrical 3, ensure that under the action of the screw, the rotating bolt 10 can slide up and down on the limiting block 24, ensure that under the action of the screw, the rotating threaded column 5 can slide left and right on the limiting ring 23, ensure that the limiting block 24 will not fall off from the sliding plate 8.

[0074] It is worth mentioning that the heating roller 7 involved in the utility model adopts the heating roller 7 with an axle distance of 25 cm produced by Shenzhen Aode Machinery Co., Ltd., and the heating roller 7 is prior art, and a person skilled in the art can realize it without further description, and the content protected by the utility model does not involve improvement on the structure and working principle of the heating roller 7.

[0075] Working principle: when double-sided coating is needed, the two ends of the cylindrical 3 are held by hands and lifted up and then moved backward to take out the cylindrical 3 from the two grooves 6, then according to the size of the paper to be coated, a suitable size of film roll is selected, the threaded column 5 is rotated, under the action of the screw, the cylindrical 3 is no longer extruded by the threaded column 5, so that the limiting ring 23 can slide on the cylindrical 3, then the limiting ring 23 is taken out from one end of the cylindrical 3, then the film roll is sleeved on the cylindrical 3 and slid to the other end of the cylindrical 3, then the limiting ring 23 is sleeved on the cylindrical 3 again and slid to the side close to the film roll, under the action of the screw, the threaded column 5 is reversely rotated, so that one end of the threaded column 5 extrudes on the cylindrical 3, so that the film roll is fixed on the cylindrical 3 by the limiting ring 23, then the cylindrical 3 with the fixed film roll is reset between the two grooves 6, and the operation of fixing the film roll on the other cylindrical 3 is the same as the above operation.

[0076] Subsequently, the slide plate 8 is pulled backward and taken out from the two grooves three 26, then the threaded rod 2 is rotated under the action of the thread, so that the threaded rod 2 drives the U-shaped frame 17 to move upward, and then the two compression rollers two 20 are driven by the upward moving U-shaped frame 17 to move upward, so that the two compression rollers two 20 and the two compression rollers one 19 have a larger gap, then the two layers of film on the two film rolls are pulled and the adhesive surfaces of the two layers of film are respectively in contact with the surfaces of the two heating rollers 7, then the two layers of film on the two film rolls are passed through the gap between the two compression rollers two 20 and the two compression rollers one 19, the threaded rod 2 is reversely rotated under the action of the thread, so that the threaded rod 2 drives the U-shaped frame 17 to move downward, and then the two compression rollers two 20 are driven by the downward moving U-shaped frame 17 to move downward, until the two compression rollers two 20 and the surfaces of the two compression rollers one 19 extrude the two layers of film, then the two heating rollers 7 are connected to the power supply and started, until the surface temperature of the two heating rollers 7 rises to 60℃, then the slide plate 8 is reset to the two grooves three 26 again;

[0077] The motor 13 is powered on and started, the output shaft of the motor 13 continuously drives one of the pressure rollers 19 to rotate, and the output shaft of the motor 13 also drives the gear 14 to rotate, under the meshing action, the rotating gear 14 drives the gear 15 to rotate, and the rotating gear 15 drives the gear 16 to rotate, the rotating gear 16 drives the other pressure roller 19 to rotate, and under the pressure, the two rotating pressure rollers 19 and the two rotating pressure rollers 20 extrude the two layers of film and drive the two layers of film to move towards the baffle 18, and the two layers of film moving towards the baffle 18 will pull the two film rolls to rotate, and the rotating film rolls drive the two cylinders 3 to rotate, and the adhesive surfaces of the two layers of film contact the surfaces of the two heating rollers 7 respectively, so that the adhesive surfaces of the two layers of film are heated by the two heating rollers 7 respectively, so that the adhesive surfaces of the two layers of film have greater adhesion, then the paper to be laminated is placed on the starting point of the scale line on the slide plate 8, and according to the width of the paper to be laminated, the two bolts 10 on the limiting block 24 are rotated to make the slide plate 8 lose the extrusion of the two bolts 10, so that the two ends of the limiting block 24 slide in the two sliding grooves 11 respectively, adjust the distance between the limiting block 24 and the starting point of the scale line, so that the distance between the limiting block 24 and the starting point of the scale line is consistent with the width of the paper, then the two bolts 10 on the limiting block 24 are reversely rotated, and under the action of the threads, the bottom ends of the two bolts 10 extrude the slide plate 8, so that the limiting block 24 is fixed on the slide plate 8 and cannot shake left and right, then the paper is pushed forward, so that the paper is located between the two layers of film, and under the action of the adhesion, the paper will be extruded by the two rotating pressure rollers 19 and the two rotating pressure rollers 20 and will move towards the baffle 18 together, and under the action of the pressure, the two layers of film are tightly adhered to the two sides of the paper, then when the paper completely moves out of the two pressure rollers 19 and the two pressure rollers 20, the double-sided lamination is completed, and then the paper with double-sided lamination is slid onto the baffle 18.

[0078] The double-sided lamination can be completed at one time, which greatly improves the lamination efficiency of the paper, and can be adjusted according to different sizes of the paper, so that the paper of different sizes can be laminated, which can meet the diversified business needs.

[0079] The embodiments of the present application are described above in combination with the drawings, and the embodiments and features in the embodiments of the present application can be combined with each other without conflict, the present application is not limited to the above specific embodiments, the above specific embodiments are only illustrative, not limiting, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the protection scope of the claims.

Claims

1. A bridge-type laminating machine, characterized in that, include: The outer shell (1) has a groove three (26) and a groove two (25) inside it; A U-shaped frame (17) is slidably installed in a groove (25). Two pressure rollers (20) are rotatably installed inside the U-shaped frame (17). Two pressure rollers (19) are rotatably installed inside the outer shell (1), and the two pressure rollers (19) are located directly below the two pressure rollers (20). A sliding plate (8) is slidably installed inside a groove (26). A scale line is engraved on the top of the sliding plate (8). Two sliding grooves (11) are symmetrically opened on the top of the sliding plate (8) and at one end of the scale line. A limiting block (24) is slidably installed between two sliding grooves (11). Two bolts (10) are rotatably installed on the top of the limiting block (24). One end of each bolt (10) passes through the limiting block (24) and extends into the two sliding grooves (11). A groove (6) is provided in the outer shell (1) and on the upper and lower sides of the sliding plate (8). A cylinder (3) is movably installed in each of the two grooves (6). A scale line (2) is engraved on each of the two cylinders (3). A limiting ring (23) is fitted on each of the two cylinders (3). A threaded column (5) is rotatably installed on the circumferential wall of each of the two limiting rings (23). One end of each threaded column (5) passes through the two limiting rings (23) and contacts the surface of the two cylinders (3). Two heating rollers (7) are rotatably installed inside the outer casing (1). The two heating rollers (7) are respectively located on one side of the two cylinders (3), and the sliding plate (8) is located between the two heating rollers (7). A lifting assembly, located inside the housing (1), is used to drive the U-shaped frame (17) to move up and down; A power assembly located on the housing (1) and used to drive two pressure rollers (19) to rotate in the same direction.

2. The bridge-type laminating machine according to claim 1, characterized in that, The lifting assembly includes: A threaded rod (2) is rotatably mounted on a U-shaped frame (17), and the top end of the threaded rod (2) penetrates the top surface of the outer shell (1) and extends to the outside.

3. A bridge-type laminating machine according to claim 2, characterized in that, The threaded rod (2) is threadedly connected to the outer casing (1).

4. A bridge-type laminating machine according to claim 1, characterized in that, The power assembly includes: A support plate (12) is fixedly installed on one side of the outer shell (1), and a motor (13) is fixedly installed on the support plate (12). The output shaft of the motor (13) passes through one side of the outer shell (1) and is coaxially connected to one of the pressure rollers (19). A gear (14) is fixedly installed on the output shaft of the motor (13) and on one side of the outer shell (1). One end of the other pressure roller (19) passes through one side of the outer shell (1) and extends to the outside and is fixedly installed with a gear (3) (16). A gear (2) (15) is rotatably installed on one side of the outer shell (1) between the gear (14) and the gear (3) (16).

5. A bridge-type laminating machine according to claim 4, characterized in that, The output shaft of the motor (13) is rotatably connected to the housing (1), and the second gear (15) meshes with the first gear (14) and the third gear (16).

6. A bridge-type laminating machine according to claim 1, characterized in that, Also includes: A baffle (18) is fixedly installed inside the housing (1) and located on one side of another pressure roller (19). The other pressure roller (19) is located between one of the pressure rollers (19) and the baffle (18). The baffle (18) has an inclined structure and the inclination angle of the baffle (18) is 10-15°.

7. A bridge-type laminating machine according to claim 1, characterized in that, The cylinder (3) is slidably connected to the limiting ring (23), the bolt (10) is threadedly connected to the limiting block (24), the threaded column (5) is threadedly connected to the limiting ring (23), and the cross-sections of the two grooves (11) are isosceles trapezoidal structures.

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