CN214446938U

CN214446938U - Tension adjusting mechanism of multifunctional composite film cutting machine

Info

Publication number: CN214446938U
Application number: CN202023013186.4U
Authority: CN
Inventors: 张占平
Original assignee: Changzhou Hadesheng Precision Technology Co ltd
Current assignee: Changzhou Hadesheng Precision Technology Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-10-22
Anticipated expiration: 2030-12-15

Abstract

The utility model relates to a machine-building technical field especially relates to a tension adjustment mechanism of multi-functional complex film cutter, and flat sword membrane cutter will process the coiled material of accomplishing and send to the paper guide roll subassembly to intermittent type, and servo motor drives the drive assembly motion, and the paper guide roll subassembly is reciprocating linear motion in the vertical direction along sliding assembly under the drive assembly effect, has compensated the coiled material at the tension between flat sword cross cutting machine and circular knife cross cutting machine, makes the circular knife cross cutting machine realize pay-off in succession. The utility model discloses in, through tension adjustment mechanism, guaranteed the coherent operation of flat cutter cross cutting machine and circular knife cross cutting machine when production, can carry out die-cut operation and cross cutting operation to same work piece in step, production efficiency is high, simple structure.

Description

Tension adjusting mechanism of multifunctional composite film cutting machine

Technical Field

The utility model relates to a machine-building technical field especially relates to a tension adjustment mechanism of multi-functional complex film cutter.

Background

In the current die cutting industry, there are a variety of die cutting equipment: circular knife die cutting machines, flat knife die cutting machines, laser die cutting machines and the like. The circular knife die cutting machine belongs to a die cutting machine, is called a multi-station rotary die cutting machine, is called a rotary machine for short, and is commonly called a circular knife machine, a hobbing cutter machine or a circular knife die cutting machine. The rotary cutter is continuously rotated in a hob mode to perform die cutting processing, and workpieces are continuously fed in a working process; the machine tool has the advantages of high efficiency, capability of realizing the processing of products with complex processes such as multi-layer material compounding, waste discharge and the like, and the problems of more material waste, unstable size sleeve position in the starting process, high price of the tool, low precision and the like in the machine debugging process. The flat-blade die-cutting machine is a device capable of punching a workpiece, and the workpiece needs to be static relative to the flat-blade die-cutting machine in the process of machining the workpiece by adopting the flat-blade die-cutting machine; the die-cutting machine has the advantages of high precision and low cost of the cutter, can realize die cutting of special materials, but cannot realize products with complex processes of compounding, die cutting, re-compounding, re-die cutting and the like of multi-layer materials.

In the products processed by the circular knife die-cutting machine, some products are realized by matching with the processing of the flat knife, and in the traditional matching, when the flat knife is used for punching a workpiece, the workpiece must stop moving, so that the workpiece conflicts with the processing process of uninterrupted feeding of the circular knife die-cutting machine, and the workpiece can be punched and die-cut ceaselessly only by the intermediate storage mechanism. The whole structure is complex, and the production process is discontinuous.

In view of the above problems, the designer actively makes research and innovation based on the practical experience and professional knowledge of the engineering application of such products, so as to create a tension adjusting mechanism of a multifunctional composite film cutting machine, and the tension adjusting mechanism is more practical.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides a tension adjustment mechanism of multi-functional complex film cutting machine, solves the problem that circle sword cross cutting machine and flush trimmer cross cutting machine can not link up production.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a tension adjustment mechanism of a multifunctional composite film cutting machine comprises:

the bottom plate is vertically fixed on the side wall of the film cutting machine;

the transmission assembly is connected with the servo motor and arranged on the bottom plate;

the sliding assembly is fixed on the perpendicular bisector of the bottom plate;

the clamping plate is fixedly connected with the transmission assembly;

the paper guide roller assembly is fixed on the sliding assembly, is fixedly connected with the clamping plate and makes reciprocating linear motion on the sliding assembly along the transmission direction of the transmission assembly.

The device further comprises a connecting plate, a shaft sleeve and an adjusting plate, wherein the connecting plate is fixedly connected with the machine body guard plate, the bottom plate is fixedly connected with the connecting plate, the shaft sleeve is fixedly connected to the top of the bottom plate, the adjusting plate is connected to the shaft sleeve, and the adjusting plate is fixedly connected with a servo motor;

furthermore, the connecting plates are arranged at intervals along the rectangular holes of the machine body guard plate.

Furthermore, the shaft sleeves are four and distributed at four corners of the motor adjusting plate.

Further, the sliding assembly comprises a linear guide rail and a sliding block, the linear guide rail is vertically and fixedly connected to the perpendicular line in the bottom plate, the sliding block is arranged on the linear guide rail in a relatively sliding mode, and the paper guide roller assembly is fixedly connected with the sliding block.

Further, its characterized in that, drive assembly includes motor pulley, driven pulley fixed axle and hold-in range, motor pulley passes through the parallel key to be fixed servo motor is last, the driven pulley fixed axle sets up the lower extreme of bottom plate, the axis of driven pulley fixed axle with servo motor axis is parallel and on same perpendicular, driven pulley rotates to be connected on the driven pulley fixed axle, the hold-in range cover is established motor pulley with on the driven pulley, be provided with the bar hole on the bottom plate, hold-in range splint one end is passed through the fastener and is fixed on the hold-in range, the other end stretches out the bottom plate.

Further, lead paper roller set spare including leading paper roll connection bottom plate, lead paper roll cushion, lead paper roll base, lead the paper roll, splint stretch out the one end of bottom plate with lead paper roll connection bottom plate fixed connection, it fixes to lead the paper roll cushion lead on the paper roll connection bottom plate, lead the paper roll cushion pass organism backplate upper bore with lead paper roll base fixed connection, lead paper roll fixed connection lead on the paper roll base, lead the paper roll cushion with slip subassembly fixed connection drives lead the paper roll edge reciprocal linear motion from top to bottom the slip subassembly.

Further, lead the paper roll and further including leading paper roll axle core, leading paper roll roller, bearing, leading paper roll bearing gland and jump ring, lead the equal fixedly connected with in paper roll roller both ends the bearing, lead paper roll axle core and pass lead the paper roll roller with lead paper roll base fixed connection, the bearing gland is fixed lead the front end of paper roll roller, the jump ring is two relatively the lateral surface setting of bearing. The paper guide roller is characterized by further comprising a gasket, wherein the gasket is sleeved on the paper guide roller shaft core and fixed at the middle position of the bearing and the clamp spring at the rear end of the paper guide roller.

Further, still include proximity sensor, proximity sensor is provided with two, sets up respectively the upper and lower tip in bottom plate bar hole.

Further, still include organ cover subassembly, organ cover subassembly further includes upper junction plate, lower connecting plate and middle swing joint board, the upper junction plate with the fixed intermediate position that sets up the top and the bottom of organism backplate down of connecting plate, middle swing joint board cover establish lead paper roll base with lead paper roll cushion fixed connection, the upper junction plate with be provided with the organ cover between the middle swing joint board, the connecting plate with be provided with down the organ cover between the middle swing joint board.

The utility model has the advantages that: the utility model discloses in, the continuous paper guide roll subassembly that is sent to between the coiled material that the flat-bed knife membrane cutting machine will process the completion, servo motor drives the drive assembly motion, paper guide roll subassembly is under the drive assembly effect, be reciprocal linear motion along sliding assembly on the vertical direction, the tension of coiled material between flat-bed knife cross cutting machine and circular knife cross cutting machine has been compensated, make circular knife cross cutting machine realize continuous pay-off, the coherent operation of flat-bed knife cross cutting machine and flat-bed knife cross cutting machine when production has been guaranteed, die-cut operation and cross-cut operation have been realized carrying out to same work piece in step, high production efficiency, moreover, the steam generator is simple in structure, and high economical efficiency is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a tension adjusting mechanism of a multifunctional composite film cutting machine according to an embodiment of the present invention;

FIG. 2 is a schematic partial sectional view of a tension adjusting mechanism of the multifunctional composite film cutting machine according to the embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a front side perspective view of a tension adjustment mechanism of the multifunctional composite film cutting machine according to the embodiment of the present invention;

FIG. 5 is a rear side schematic view of a tension adjusting mechanism of the multifunctional composite film cutting machine according to the embodiment of the present invention;

fig. 6 is a schematic perspective view of the multifunctional composite film cutting machine according to the embodiment of the present invention.

Reference numerals: 10. a connecting plate; 20. a base plate; 30. a shaft sleeve; 40. an adjusting plate; 50. a splint; 60. a transmission assembly; 61. a motor pulley; 62. a driven pulley; 63. a driven pulley fixed shaft; 64. a synchronous belt; 70. a sliding assembly; 71. a linear guide rail; 72. a slider; 80. a paper guide roller assembly; 81. the paper guide roller is connected with the bottom plate; 82. a paper guide roller cushion block; 83. a paper guide roller base; 84. paper guide rollers; 841. a paper guide roller shaft core; 842. a paper guide roller; 843. a bearing; 844. a paper guide roller bearing gland; 845. a clamp spring; 846. a gasket; 90. a proximity sensor; 100. an organ cover assembly; 110. an upper connecting plate; 120. a lower connecting plate; 130. a middle movable connecting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The tension adjusting mechanism of the multifunctional composite film cutting machine shown in fig. 1 to 5 comprises: the paper guide roller assembly comprises a base plate 20 vertically fixed on the side wall of the film cutting machine, a transmission assembly 60 connected with a servo motor and arranged on the base plate 20, a sliding assembly 70 fixed on the perpendicular bisector of the base plate 20, a clamping plate 50 fixedly connected with the transmission assembly 60, a paper guide roller assembly 80 fixed on the sliding assembly 70 and fixedly connected with the clamping plate 50, and the paper guide roller assembly can make reciprocating linear motion on the sliding assembly 70 along the transmission direction of the transmission assembly 60. It should be noted that, a driving shaft of the servo motor is connected with the transmission assembly 60, a vertical long groove is formed in the bottom plate 20, and the sliding assembly 70 is embedded in the long groove and fixedly connected with the bottom plate 20 through a bolt, so that the installation accuracy of the sliding assembly 70 is ensured. Still seted up a bar hole on bottom plate 20, its bar hole is located the position that the axis is inclined to the right, and splint 50 passes through bar hole one end and is connected with drive assembly 60, and the other end is connected with lead paper roll subassembly 80, makes and leads paper roll subassembly 80 under drive assembly 60 drives, realizes the linear motion of vertical direction, leads paper roll subassembly 80 again with slip subassembly 70 fixed connection, has reduced slip in-process frictional force, has guaranteed the gliding smooth nature in the vertical direction.

The servo motor drives the transmission assembly 60 to do reciprocating linear motion in the vertical direction, the paper guide roller assembly 80 is fixedly connected with the transmission assembly 60 through the clamping plate 50, and the paper guide roller assembly 80 is fixedly connected with the sliding assembly 70, so that the paper guide roller assembly 80 does reciprocating linear motion in the vertical direction along the sliding assembly 70 under the action of the transmission assembly 60.

The utility model discloses a tension adjustment mechanism still includes connecting plate 10, axle sleeve 30 and regulating plate 40 in the preferred embodiment, connecting plate 10 and organism backplate fixed connection, bottom plate 20 with connecting plate 10 fixed connection, axle sleeve 30) fixed connection be in the top of bottom plate 20, regulating plate 40 is connected on the axle sleeve 30, regulating plate 40 fixed connection servo motor. It should be noted that vertical rectangular hole has been seted up to putting at organism backplate central point, connecting plate 10 sets up along the rectangular hole, the bolt makes connecting plate 10 fix the rear side at the organism backplate through reserving the mounting hole on the backplate, bottom plate 20 and connecting plate 10 pass through bolt fixed connection, there is certain distance between backplate and the bottom plate 20, its distance is the length of connecting plate 10, not only for the sliding component provides installation and debugging space, the sliding component that also is convenient for hides to the backplate rear side, play certain guard action. The shaft sleeve 30 is arranged between the bottom plate 20 and the adjusting plate 40, a round hole is formed in the center position of the adjusting plate 40, and the position in the vertical direction is convenient to adjust through the vertical strip-shaped mounting hole in the adjusting plate 40, so that the servo motor is driven to move in the vertical direction to meet the transmission distance in the vertical direction of the transmission assembly 60.

As shown in fig. 5, the connecting plates 10 are provided in plurality at intervals along the rectangular holes of the body guard. The two sides edge symmetry along the rectangular hole respectively sets up three connecting plate 10, and the top sets up one, and its connecting plate 10 passes through backplate and the ascending bolt fastening of bottom plate 20 two directions, has improved overall structure's steadiness.

In the preferred embodiment of the present invention, four shaft sleeves 30 are provided, and are distributed at four corners of the motor adjusting plate 40. The four shaft sleeves 30 are connected with the bottom plate 20 and the adjusting plate 40, so that the space between the bottom plate 20 and the adjusting plate 40 ensures the arrangement of the transmission assembly 60, the inner hole of each shaft sleeve 30 is a stepped hole, and the adjusting plate 40, the shaft sleeves 30 and the bottom plate 20 are fixedly connected together through bolts, so that the stability is improved, and the transmission precision of the transmission assembly 60 is ensured.

In the preferred embodiment of the present invention, the sliding assembly 70 comprises a linear guide 71 and a slider 72, the linear guide 71 is vertically and fixedly connected to the perpendicular line of the bottom plate 20, the slider 72 is slidably sleeved on the linear guide 71, and the paper guiding roller assembly 80 is fixedly connected to the slider 72. Note that, in order to satisfy the driving distance in the vertical direction of the paper guide roller assembly 80, the length of the linear guide rail 71 is longer than the length in the vertical direction of the rectangular groove formed in the cover, and the paper guide roller assembly 80 slides in the vertical direction on the linear guide rail 71.

In the preferred embodiment of the present invention, the transmission assembly 60 comprises a motor pulley 61, a driven pulley 62, a driven pulley fixing shaft 63 and a synchronous belt 64, as shown in fig. 2, the motor pulley 61 is fixed on the servo motor through a flat key, so that the pulley is driven by the servo motor to rotate, the driven pulley fixing shaft 63 passes through the mounting hole on the bottom plate 20 and is fixedly disposed at the lower end of the bottom plate 20 and connected with the driven pulley 62, so that the axis of the driven pulley fixing shaft 63 is parallel to the axis of the servo motor and is on the same vertical plane, in order to satisfy the requirement that the driven pulley 62 is rotatably connected to the driven pulley fixing shaft 63, a bearing 843 is disposed inside the driven pulley 62, a clamp spring 845 is disposed outside the driven pulley 62, the clamp spring 845 is clamped on the driven pulley fixing shaft 63, so as to prevent the motor pulley 61 from generating axial displacement on the shaft, the synchronous belt 64 is sleeved on the motor pulley 61 and the driven pulley 62, at this time, the up-down position of the adjusting plate 40 can be properly moved to make the tension of the timing belt 64 meet the requirement of belt transmission.

As shown in fig. 1 and 2, the paper guide roller assembly 80 includes a connecting plate on a paper guide roller connecting base plate 81, a paper guide roller cushion block 82, a paper guide roller base 83, and a paper guide roller 84, wherein the paper guide roller cushion block 82 is fixed on the paper guide roller connecting base plate 81, the paper guide roller cushion block 82 penetrates through a rectangular hole on a body guard plate to be fixedly connected with the paper guide roller base 83, the paper guide roller 84 is fixedly connected on the paper guide roller base 83, and the paper guide roller cushion block 82 is fixedly connected with the sliding assembly 70 to drive the paper guide roller 84 to reciprocate in the vertical direction along the linear guide rail 71. The paper guide roller cushion block 82 is preferably a rectangular block in the embodiment, the paper guide roller cushion block 82 is arranged in the rectangular hole of the guard plate, one side of the paper guide roller cushion block is fixedly connected with the paper guide roller connecting bottom plate 81, and the other side of the paper guide roller cushion block is fixedly connected with the paper guide roller base 83, so that the paper guide roller cushion block 82 can move linearly up and down in the rectangular hole.

As shown in fig. 2 and fig. 3, the paper guide roller 84 further includes a paper guide roller shaft core 841, a paper guide roller drum 842, a bearing 843, a paper guide roller bearing cover 844 and a clamp spring 845, wherein the two ends of the paper guide roller drum 842 are fixedly connected with the bearings 843, the paper guide roller drum 842 can rotate circumferentially relative to the axis of the paper guide roller 84, the paper guide roller shaft core 841 penetrates through the paper guide roller drum 842 to be fixedly connected with the paper guide roller base 83 through bolts, in order to prevent the paper guide roller shaft core 841 from rotating, two fixed mounting holes are arranged at the end part of the paper guide roller 84, and the self-rotation freedom degree is limited through the two mounting holes. Lead paper roll bearing cover 844 and fix at the front end of leading paper roll roller 842, be favorable to preventing that inner bearing 843 from exposing for a long time and causing the rotation direction to receive the influence, the relative lateral surface setting of two bearings 843 of jump ring 845 guarantees that bearing 843 relative position is confirmed, improves rotation accuracy and overall structure's stability. And the device further comprises a gasket 846, wherein the gasket 846 is sleeved on the paper guide roller shaft core 841 and is fixed in the middle position of a bearing 843 and a clamp spring 845 at the rear end of the paper guide roller 842. By adjusting the thickness of the spacer 846, the two bearings 843 are always fixed in the step hole of the paper guide roller cylinder 842, the outer ring of the bearing 843 is fixed relative to the paper guide roller cylinder 842, the inner ring of the bearing 843 is fixed relative to the paper guide roller shaft core 841, the structure is compact, and the rotating stability of the paper guide roller cylinder 842 is ensured.

The utility model discloses still include proximity sensor 90 in the preferred embodiment, proximity sensor 90 is provided with two, sets up the upper and lower tip in 20 bar holes of bottom plate respectively. When leading paper roll cushion 82 and removing proximity sensor 90, change the moving direction, prevent to lead the collision of paper roll cushion 82 and backplate bar hole, reduced the risk that leads to drive assembly and sliding assembly's damage among the mechanism collision process.

The utility model discloses tension adjustment mechanism still includes organ cover subassembly 100 in the preferred embodiment, organ cover subassembly 100 further includes upper junction plate 110, lower connecting plate 120 and middle swing joint board 130, upper junction plate 110 and the fixed intermediate position who sets up the top and the bottom of organism backplate of lower connecting plate 120, middle swing joint board 130 cover is established on leading paper roll base 83, and with leading paper roll cushion 82 fixed connection, be provided with the organ cover in the top between upper junction plate 110 and the middle swing joint board 130, be provided with the organ cover down between lower connecting plate 120 and the middle swing joint board 130. When the paper guide roller assembly 80 moves upwards, the upper organ cover contracts, the lower organ cover opens, when the paper guide roller assembly 80 moves downwards, the upper organ cover opens, the lower organ cover contracts, the upper organ cover and the lower organ cover continuously move up and down along with the paper guide roller assembly 80 to change, a shielding effect is achieved on a rectangular hole in the guard plate, then the transmission assembly 60 and the sliding assembly 70 on the rear side of the guard plate are effectively shielded, the organ cover has the advantages of no noise, long stroke and small compression, the surface is smooth, the modeling is regular, and visual aesthetic feeling is increased while the mechanism is protected.

It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a tension adjustment mechanism of multi-functional complex film cutting machine, sets up between flat-bed knife cross cutting machine and circular knife cross cutting machine, its characterized in that includes:

the bottom plate (20) is vertically fixed on the side wall of the film cutting machine;

the transmission assembly (60) is connected with the servo motor and arranged on the bottom plate (20);

a sliding assembly (70), wherein the sliding assembly (70) is fixed on a perpendicular bisector of the bottom plate (20);

the clamping plate (50), the clamping plate (50) is fixedly connected with the transmission assembly (60);

the paper guide roller assembly (80) is fixed on the sliding assembly (70), is fixedly connected with the clamping plate (50), and makes reciprocating linear motion on the sliding assembly (70) along the transmission direction of the transmission assembly (60).

2. The tension adjusting mechanism of the multifunctional composite film cutting machine as claimed in claim 1, further comprising a connecting plate (10), a shaft sleeve (30) and an adjusting plate (40), wherein the connecting plate (10) is fixedly connected with a machine body guard plate, the bottom plate (20) is fixedly connected with the connecting plate (10), the shaft sleeve (30) is fixedly connected with the top of the bottom plate (20), the adjusting plate (40) is connected with the shaft sleeve (30), and the adjusting plate (40) is fixedly connected with a servo motor; the connecting plates (10) are arranged in a plurality at intervals along the rectangular holes of the machine body guard plate.

3. The tension adjusting mechanism of the multifunctional compound film cutting machine as claimed in claim 2, wherein the shaft sleeves (30) are provided with four, and are distributed at four corners of the adjusting plate (40).

4. The tension adjusting mechanism of the multifunctional composite film cutting machine as claimed in claim 1, wherein the sliding assembly (70) comprises a linear guide rail (71) and a sliding block (72), the linear guide rail (71) is vertically and fixedly connected to a perpendicular line in the bottom plate (20), the sliding block (72) is relatively and slidably arranged on the linear guide rail (71), and the paper guide roller assembly (80) is fixedly connected to the sliding block (72).

5. The tension adjusting mechanism of the multifunctional composite film cutting machine as claimed in claim 1, wherein the transmission assembly (60) comprises a motor pulley (61), a driven pulley (62), a driven pulley fixing shaft (63) and a synchronous belt (64), the motor pulley (61) is fixed on the servo motor through a flat key, the driven pulley fixing shaft (63) is arranged at the lower end of the bottom plate (20), the axis of the driven pulley fixing shaft (63) is parallel to the axis of the servo motor and is on the same vertical plane, the driven pulley (62) is rotationally connected to the driven pulley fixing shaft (63), the synchronous belt (64) is sleeved on the motor pulley (61) and the driven pulley (62), the bottom plate (20) is provided with a strip-shaped hole, one end of a clamping plate (50) of the synchronous belt (64) is fixed on the synchronous belt (64) through a fastener, the other end extends out of the bottom plate (20).

6. The tension adjusting mechanism of the multifunctional composite film cutting machine as claimed in claim 1, the paper guide roller assembly (80) comprises a paper guide roller connecting bottom plate (81), a paper guide roller cushion block (82), a paper guide roller base (83) and a paper guide roller (84), one end of the clamping plate (50) extending out of the bottom plate (20) is fixedly connected with the paper guide roller connecting bottom plate (81), the paper guide roller cushion block (82) is fixed on the paper guide roller connecting bottom plate (81), the paper guide roller cushion block (82) penetrates through the hole on the machine body guard plate to be fixedly connected with the paper guide roller base (83), the paper guide roller (84) is fixedly connected to the paper guide roller base (83), lead paper roll cushion (82) with sliding assembly (70) fixed connection drives lead paper roll (84) and follow sliding assembly (70) up-and-down reciprocating linear motion.

7. The tension adjusting mechanism of the multifunctional composite film cutting machine as claimed in claim 6, wherein the paper guide roller (84) further comprises a paper guide roller shaft core (841), a paper guide roller drum (842), a bearing (843), a paper guide roller bearing cover (844) and a clamp spring (845), the bearing (843) is fixedly connected to both ends of the paper guide roller drum (842), the paper guide roller shaft core (841) penetrates through the paper guide roller drum (842) and the paper guide roller base (83) to be fixedly connected, the bearing cover (844) is fixed to the front end of the paper guide roller drum (842), and the clamp spring (845) is arranged opposite to the outer side faces of the two bearings (843).

8. The tension adjusting mechanism of the multifunctional composite film cutting machine as claimed in claim 7, further comprising a spacer (846), wherein the spacer (846) is sleeved on the guide roller shaft core (841) and fixed at a middle position between the bearing (843) and the clamp spring (845) at the rear end of the guide roller (842).

9. The tension adjusting mechanism of the multifunctional composite film cutting machine as claimed in claim 1, further comprising two proximity sensors (90), wherein the two proximity sensors (90) are respectively disposed at the upper and lower ends of the strip-shaped hole of the bottom plate (20).

10. The tension adjusting mechanism of the multifunctional composite film cutting machine as claimed in claim 6, further comprising a bellows cover assembly (100), wherein the bellows cover assembly further comprises an upper connecting plate (110), a lower connecting plate (120) and a middle movable connecting plate (130), the upper connecting plate (110) and the lower connecting plate (120) are fixedly arranged at the middle position of the top and the bottom of the machine body guard plate, the middle movable connecting plate (130) is sleeved on the paper guide roller base (83) and is fixedly connected with the paper guide roller cushion block (82), an upper bellows cover is arranged between the upper connecting plate (110) and the middle movable connecting plate (130), and a lower bellows cover is arranged between the lower connecting plate (120) and the middle movable connecting plate (130).