Film laminating machine

Abstract

The present invention is applicable to the technical field of automatic film pasting, and provides a film pasting machine, which includes a film pasting mechanism, a feeding mechanism for guiding a workpiece to be film pasted to a corresponding working position of the film pasting mechanism, a material transferring mechanism for taking out the workpiece to be film pasted after film pasting from the film pasting mechanism, and a handling mechanism for picking and placing a film roll. Compared with the prior art, by respectively arranging the feeding mechanism and the material transferring mechanism on both sides of the film pasting mechanism, the feeding mechanism can automatically feed the workpiece to be film pasted into the film pasting mechanism. After the film pasting mechanism completes the automatic film pasting operation on the workpiece to be film pasted, the material transferring mechanism can automatically take out the workpiece to be film pasted after film pasting from the film pasting mechanism, thereby realizing the automatic operations of feeding, film pasting and discharging the workpiece to be film pasted; the automatic loading and unloading operation of the film roll can be realized through the handling mechanism. Therefore, this film pasting machine does not require manual feeding, discharging and film roll loading and unloading operations, realizes fully automatic film pasting operation, saves time and effort, and has high production efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of automatic film pasting, and more specifically, relates to a film pasting machine. Background Art

[0002] As a carrier of electronic components, a circuit board is an essential and important electronic component of an electronic device. Before exposure, the circuit board needs to be treated with dry film pasting, and the film pasting machine is the main device for dry film pasting on the circuit board. During the film pasting process, the circuit board needs to be fed into the film pasting machine, and after the circuit board is film pasted, the film pasted circuit board is taken out; moreover, when the dry film is used up, the film roll needs to be replaced in time.

[0003] However, at present, some of the operations of feeding or taking out the board are completed manually, and the replacement of the film roll is also manually loaded. Therefore, manual feeding or taking out of the board, and manual loading of the film roll will affect the film pasting accuracy of the circuit board and subsequent processes. The film pasting machine cannot achieve fully automated operation, which is time-consuming and laborious, and has low production efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a film pasting machine to solve the problems existing in the prior art that the film pasting machine cannot achieve fully automated operation, is time-consuming and laborious, and has low production efficiency.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: providing a film pasting machine, including a film pasting mechanism for film pasting, a feeding mechanism for guiding the workpiece to be film pasted to the corresponding working position of the film pasting mechanism, a material moving mechanism for leading out the workpiece to be film pasted after film pasting from the film pasting mechanism, and a handling mechanism for transporting the film roll to the film pasting mechanism and removing the empty reel from the film pasting mechanism; the feeding mechanism and the material moving mechanism are respectively arranged on both sides of the film pasting mechanism, and the feeding mechanism and the material moving mechanism are respectively docked with the film pasting mechanism.

[0006] The beneficial effect of the film pasting machine provided by the present invention is that: compared with the prior art, the present invention respectively arranges a feeding mechanism and a material moving mechanism on both sides of the film pasting mechanism. The feeding mechanism can automatically feed the workpiece to be film pasted into the film pasting mechanism. After the film pasting mechanism completes the automatic film pasting operation on the workpiece to be film pasted, the material moving mechanism can automatically lead out the workpiece to be film pasted after film pasting from the film pasting mechanism, thereby realizing the automated operations of feeding, film pasting, and taking out the board of the workpiece to be film pasted; the automatic loading and unloading operation of the film roll can be realized through the handling mechanism. Therefore, the film pasting machine does not require manual feeding, taking out of the board, and loading and unloading of the film roll, realizes fully automated film pasting operation, saves time and effort, and has high production efficiency. Description of the Drawings

[0007] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0008] Figure 1 Structural schematic diagram of the film roll provided by the embodiment of the present invention;

[0009] Figure 2 Structural schematic diagram of the film pasting machine provided by the embodiment of the present invention;

[0010] Figure 3 Structural schematic diagram of the film pasting machine provided by the embodiment of the present invention after removing the chassis;

[0011] Figure 4 Structural schematic diagram of the film pasting mechanism provided by the embodiment of the present invention;

[0012] Figure 5 Cross-sectional schematic diagram of the film pasting mechanism provided by the embodiment of the present invention;

[0013] Figure 6 Partial structural schematic diagram of the film pasting mechanism provided by the embodiment of the present invention;

[0014] Figure 7 For Figure 6 Structural schematic diagram of the other side;

[0015] Figure 8 Cross-sectional schematic diagram of two film pressing rollers, two extrusion rollers, a first film suction assembly, a pre-film pasting assembly, and a second film suction assembly provided by the embodiment of the present invention;

[0016] Figure 9 Cross-sectional schematic diagram of the first film suction assembly provided by the embodiment of the present invention;

[0017] Figure 10 Explosion schematic diagram of the pre-film pasting assembly provided by the embodiment of the present invention;

[0018] Figure 11 Structural schematic diagram of the dry film feeding assembly and the tension assembly provided by the embodiment of the present invention;

[0019] Figure 12 Structural schematic diagram of the film cutting assembly provided by the embodiment of the present invention;

[0020] Figure 13 Structural schematic diagram of the second film suction assembly provided by the embodiment of the present invention;

[0021] Figure 14Explosion schematic diagram of the handling mechanism provided by the embodiment of the present invention;

[0022] Figure 15 Structural schematic diagram of the first transmission member provided by the embodiment of the present invention;

[0023] Figure 16 Structural schematic diagram of the second transmission member provided by the embodiment of the present invention;

[0024] Figure 17 Structural schematic diagram of the support arm provided by the embodiment of the present invention;

[0025] Figure 18 Structural schematic diagram of the material transfer mechanism provided by the embodiment of the present invention;

[0026] Figure 19 Structural schematic diagram of the connection between the guiding frame and the driving component provided by the embodiment of the present invention;

[0027] Figure 20 Structural schematic diagram of the guiding frame provided by the embodiment of the present invention;

[0028] Figure 21 Structural schematic diagram of the feeding mechanism provided by the embodiment of the present invention.

[0029] Among them, the reference numerals in the figure:

[0030] 1 - film roll; 11 - support shaft; 12 - dry film;

[0031] 2 - chassis; 20 - feeding window; 21 - loading channel;

[0032] 3 - Film laminating mechanism; 31 - Frame; 311 - Film pressing roller; 312 - Extrusion roller; 313 - First sensor; 314 - Rotating arm; 315 - Rotating shaft; 316 - First power component; 32 - Power assembly; 321 - Rotating wheel; 322 - Gear component; 323 - Transmission component; 33 - First film suction assembly; 331 - Accommodation chamber; 332 - Sealed housing; 333 - Film suction cavity; 334 - Suction pipe; 335 - Arc surface; 34 - Pre - film laminating assembly; 341 - Support plate; 3411 - Guide groove; 3412 - Rack; 342 - Film suction main body; 3421 - First sealed box body; 3422 - First connecting pipe; 3423 - First air extraction hole; 3424 - Positioning column; 343 - Second power component; 344 - Hollow pipe; 345 - Positioning rod; 346 - Connecting rod; 347 - Rotating seat; 35 - Transmission shaft; 351 - Gear; 352 - Third power component; 36 - Dry film feeding assembly; 361 - First roller; 362 - Second roller; 363 - Fourth power component; 364 - Fifth power component; 37 - Tension assembly; 371 - Tension rod; 372 - Link component; 373 - Sixth power component; 38 - Film cutting assembly; 381 - Support frame; 382 - Driving wheel; 383 - Driven wheel; 384 - Connecting belt; 385 - Cutting component; 386 - Seventh power component; 387 - Guide rod; 39 - Second film suction assembly; 391 - Second sealed box body; 392 - Second connecting pipe; 393 - Second air extraction hole;

[0033] 4 - Handling mechanism; 41 - Material taking assembly; 411 - Support arm; 412 - Hook; 413 - Second sensor; 42 - Horizontal movement assembly; 421 - Second transmission component; 422 - Second base; 423 - Second lead screw; 424 - Second slider; 425 - Second driving component; 426 - Guide post; 427 - Guide sleeve; 43 - Vertical movement assembly; 431 - First transmission component; 432 - Driving component; 433 - First base; 434 - First lead screw; 435 - First slider; 436 - Rotating shaft; 437 - Angle reducer; 438 - First driving component;

[0034] 5 - Material transfer mechanism; 51 - Base; 511 - Underframe; 5111 - Notch; 512 - Positioning frame; 513 - Slide plate; 5131 - First positioning groove; 52 - Guide frame; 521 - Outer frame body; 522 - Fixed shaft; 523 - Rotating shaft; 524 - Eighth power component; 525 - Cross bar; 526 - Third sensor; 527 - Positioning guide rod; 528 - Output shaft; 53 - Driving assembly; 531 - Ninth power component; 532 - Lifting component; 533 - Positioning plate; 5331 - Second positioning groove; 534 - Tenth power component;

[0035] 6 - Feeding mechanism; 61 - Guide frame; 62 - Rolling shaft; 63 - Eleventh power component; 64 - Fourth sensor;

[0036] 7 - Transition guide frame; 71 - Intermediate guide shaft. Detailed implementation manner

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0039] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth", "eleventh" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth", "eleventh" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0041] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Please refer to Figure 1 , the film roll 1 provided by the embodiment of the present invention includes a support shaft 11 and a dry film 12 wound around the support shaft 11. Both ends of the support shaft 11 extend out of the dry film 12 respectively, which is convenient for the picking and placing of the handling mechanism 4.

[0043] Please also refer to Figure 2 and Figure 3 , and the film laminating machine provided by the embodiment of the present invention will be described. The film laminating machine includes a film laminating mechanism 3 for attaching the dry film 12 to the workpiece to be laminated, a feeding mechanism 6 for guiding the workpiece to be laminated to the corresponding working position of the film laminating mechanism 3, a material transferring mechanism 5 for leading out the workpiece to be laminated after film lamination from the film laminating mechanism 3, and a handling mechanism 4 for transferring the film roll 1 onto the film laminating mechanism 3 and removing the empty reel from the film laminating mechanism 3; the feeding mechanism 6 and the material transferring mechanism 5 are respectively arranged on both sides of the film laminating mechanism 3, and the feeding mechanism 6 and the material transferring mechanism 5 are respectively docked with the film laminating mechanism 3. Optionally, the workpiece to be laminated can be a circuit board or the like, which is not uniquely limited herein.

[0044] Compared with the prior art, for the film laminating machine provided by the embodiment of the present invention, by respectively arranging the feeding mechanism 6 and the material transferring mechanism 5 on both sides of the film laminating mechanism 3, the feeding mechanism 6 can automatically feed the workpiece to be laminated into the film laminating mechanism 3. After the film laminating mechanism 3 completes the automatic film laminating operation on the workpiece to be laminated, the material transferring mechanism 5 can automatically lead out the workpiece to be laminated after film lamination from the film laminating mechanism 3, thereby realizing the automatic operations of feeding, film laminating and discharging the workpiece to be laminated; the automatic loading and unloading operation of the film roll 1 can be realized through the handling mechanism 4. Therefore, the film laminating machine does not require manual feeding, discharging and loading and unloading of the film roll 1, realizes fully automatic film laminating operation, saves time and effort, and has high production efficiency.

[0045] Further, please also refer to Figures 4 to 6, as a specific implementation of the film pasting machine provided by the embodiments of the present invention, the film pasting mechanism 3 includes a frame 31, two film pressing rollers 311 and two extrusion rollers 312 respectively rotatably installed on the frame 31, and a power assembly 32 for driving each film pressing roller 311 to rotate; the two extrusion rollers 312 are arranged at corresponding positions between the two film pressing rollers 311, the outer circumferential surfaces of the two extrusion rollers 312 are respectively tangent to the outer circumferential surfaces of the two film pressing rollers 311, the cross-sectional diameter of the extrusion roller 312 is smaller than the cross-sectional diameter of the film pressing roller 311, and the power assembly 32 is installed on the frame 31. Optionally, the frame 31 may be composed of two oppositely arranged side plates. The direction of the connection line of the two side plates is called the width direction of the frame 31, and the direction parallel to the side plates is called the length direction of the frame 31. With this structure, when the power assembly 32 drives each film pressing roller 311 to rotate, it also drives each extrusion roller 312 to rotate; and the cross-sectional diameter of the extrusion roller 312 is smaller than the cross-sectional diameter of the film pressing roller 311. Therefore, compared with the film pasting structure with only two film pressing rollers 311, the contact area between the extrusion roller 312 with a smaller cross-sectional diameter and the part to be pasted with film is smaller, thereby improving the uniformity of the pressure applied to the part to be pasted with film and improving the film pasting quality.

[0046] Optionally, please also refer to Figure 4 , a transition guiding frame 7 is arranged on the frame 31, and a plurality of intermediate guiding shafts 71 rotatably installed on the transition guiding frame 7. The transition guiding frame 7 is arranged at the position between the feeding mechanism 6 and the material transferring mechanism 5, and functions to guide the part to be pasted with film in a transitional manner.

[0047] Optionally, please also refer to Figure 6 , each power assembly 32 includes a rotating wheel 321 respectively installed at one end of each film pressing roller 311, a gear member 322 connecting the rotating wheels 321, and a transmission member 323 for driving the gear member 322 to rotate to drive each film pressing roller 311 to rotate; the gear member 322 is installed on the frame 31, the gear member 322 is connected to the transmission member 323, and the transmission member 323 is installed on the frame 31. With this structure, the transmission member 323 can drive the two rotating wheels 321 to rotate simultaneously through the gear member 322, improving the synchronism of the rotation of the two rotating wheels 321, and further improving the film pasting quality. Optionally, the transmission member 323 may be a servo motor or a stepping motor, etc.; the two rotating wheels 321 may be individually driven by a servo motor or a stepping motor, and this is not limited uniquely here.

[0048] Optionally, please also refer to Figure 6 , the film pasting mechanism 3 further includes a first sensor 313 for detecting the rotation speed of each extrusion roller 312, and each first sensor 313 is respectively installed on the frame 31. With this structure, the rotation speed of each extrusion roller 312 can be measured through the first sensor 313, and whether the rotation of each extrusion roller 312 is consistent can be detected, which is convenient for improving the synchronism of pasting films on the upper and lower surfaces of the part to be pasted with film, and further improving the film pasting quality.

[0049] Further, please refer to Figure 6 and Figure 7 As a specific implementation of the film laminating machine provided in the embodiment of the present invention, the film laminating mechanism 3 further includes two rotating arms 314 respectively supporting both ends of a film pressing roller 311, a rotating shaft 315 connecting the two rotating arms 314, and a first power member 316 for driving each rotating arm 314 to rotate around the rotating shaft 315; the rotating shaft 315 is installed on the frame 31, each first power member 316 is installed on the frame 31, and each first power member 316 and the corresponding film pressing roller 311 are respectively connected to both ends of the corresponding rotating arm 314. In this structure, when each first power member 316 drives the corresponding rotating arm 314 to rotate around the rotating shaft 315, the film pressing roller 311 can be lifted, so as to facilitate the maintenance and replacement of the film pressing roller 311 and the extrusion roller 312, and provide sufficient operating space. Optionally, the distance between each first power member 316 and the rotating shaft 315 is greater than the distance between the rotating shaft 315 and the corresponding film pressing roller 311, so that the torque of each first power member 316 driving the rotating arm 314 is large, which is convenient for saving effort. Optionally, the first power member 316 can be a cylinder or an oil cylinder, etc., and the output end of the first power member 316 can be hinged to the rotating arm 314 to drive the rotating arm 314 to rotate around the rotating shaft 315, which is not uniquely limited here.

[0050] Further, please refer to Figure 8 As a specific implementation of the film laminating machine provided in the embodiment of the present invention, the film laminating mechanism 3 further includes a first film suction assembly 33 for adsorbing the dry film 12 and an air extraction assembly (not shown in the figure) for air extraction. The air extraction assembly and the first film suction assembly 33 are respectively installed on the frame 31. The first film suction assembly 33 is arranged on the side where the dry film 12 enters the extrusion roller 312, and the air extraction assembly is connected to the first film suction assembly 33. In this structure, the dry film 12 can be adsorbed and fixed by the first film suction assembly 33, so as to facilitate the film laminating operation; it can also effectively prevent the dry film 12 from shaking and affecting the film laminating accuracy.

[0051] Optionally, please refer to Figure 9, the first film suction assembly 33 includes a sealed housing 332 having a receiving chamber 331, and the receiving chamber 331 includes a plurality of film suction cavities 333 for adsorbing different positions of the dry film 12. The sealed housing 332 is installed on the frame 31, and a plurality of air suction holes (not shown in the figure) are respectively opened on the side walls of the sealed housing 332 corresponding to each film suction cavity 333; a plurality of air suction pipes 334 are arranged on the sealed housing 332 corresponding to the positions of each film suction cavity 333, and each film suction cavity 333 is respectively communicated with the air extraction assembly through a plurality of air suction pipes 334. With this structure, when the air extraction assembly extracts air, each film suction cavity 333 can respectively adsorb different positions of the dry film 12 through the corresponding air suction holes, thereby improving the adsorption effect on the dry film 12, effectively preventing the dry film 12 from shaking or falling off during the movement, improving the alignment accuracy between the dry film 12 and the workpiece to be pasted with film, and improving the film pasting quality.

[0052] Optionally, please also refer to Figure 9 , the number of the film suction cavities 333 can be three. Among them, the film suction cavity 333 on the left is independently communicated with the air suction pipe 334, and the other two adjacent film suction cavities 333 are communicated and then communicated with another air suction pipe 334 to form an integrated chamber, thereby realizing the film suction operation of the divided chambers. In other embodiments, each film suction cavity 333 can also be independently connected to an external air extraction device to realize the independent film suction of each film suction cavity 333. The number of the film suction cavities 333, the communication combination between the multiple film suction cavities 333, etc. can all be adjusted according to actual needs and are not uniquely limited herein.

[0053] Optionally, please also refer to Figure 9 , the side surface of the sealed housing 332 facing the dry film 12 is an arc surface 335, and a plurality of air suction holes are respectively opened on the arc surface 335. With this structure, the arc surface 335 of the sealed housing 332 can guide the dry film 12 between the two film pressing rollers 311, and can also effectively prevent the dry film 12 from wrinkling due to shaking, thereby improving the film pasting effect.

[0054] Furthermore, please also refer to Figure 5 、 Figure 8 and Figure 10 , as a specific implementation manner of the film pasting machine provided by the embodiment of the present invention, the film pasting mechanism 3 further includes a pre-film pasting assembly 34 for pre-pasting the workpiece to be pasted with film. The pre-film pasting assembly 34 is slidably installed on the frame 31 and is located on one side of the first film suction assembly 33, and the pre-film pasting assembly 34 is connected to the air extraction assembly. With this structure, the pre-film pasting assembly 34 can accurately align the dry film 12 with the workpiece to be pasted with film in advance, and then complete the film pasting operation through the extrusion and fitting of the two extrusion rollers 312, thereby improving the film pasting accuracy.

[0055] Furthermore, please also refer to Figure 5 and Figure 10, as a specific implementation of the film laminating machine provided by the embodiments of the present invention, the pre-film laminating assembly 34 includes two oppositely arranged support plates 341 mounted on the frame 31, a film suction main body 342 for sucking the film, and a second power member 343 for driving the film suction main body 342 to move towards or away from the sealing housing 332; both ends of the film suction main body 342 are slidably mounted on the corresponding support plates 341, the film suction main body 342 is connected to the air extraction assembly, the second power member 343 is connected to the film suction main body 342, and the second power member 343 is mounted on the support plate 341. With this structure, the second power member 343 can drive the film suction main body 342 to move on the two support plates 341, so as to transfer the dry film 12 to the surface close to the component to be film laminated, realize the pre-alignment of the dry film 12 and the component to be film laminated, facilitate the film laminating operation of the two pressing rollers 312, and improve the film laminating effect.

[0056] Optionally, please refer to Figure 5 and Figure 10 , the film suction main body 342 includes a first sealed box body 3421 having a first accommodation space (not shown in the figure) and a plurality of first connecting pipes 3422 connecting the first accommodation space to the air extraction assembly, and a plurality of first air extraction holes 3423 are formed on the side surface of the first sealed box body 3421 facing the dry film 12; both ends of the first sealed box body 3421 are slidably mounted on the corresponding support plates 341, and the second power member 343 is connected to the first sealed box body 3421. With this structure, when the air extraction assembly extracts air, the dry film 12 can be adsorbed on the corresponding side surface of the first sealed box body 3421 through the first air extraction holes 3423, the first accommodation space and the plurality of first connecting pipes 3422, thereby improving the adsorption effect on the dry film 12 and preventing the shaking and falling off of the dry film 12.

[0057] Optionally, please refer to Figure 5 and Figure 10 , a guiding groove 3411 is formed on each support plate 341, and positioning columns 3424 extending into the corresponding guiding grooves 3411 are respectively provided at both ends of the first sealed box body 3421. With this structure, through the movement of the positioning columns 3424 in the corresponding guiding grooves 3411, each guiding groove 3411 can guide the movement of the first sealed box body 3421, thereby improving the movement reliability of the film suction main body 342.

[0058] Optionally, please refer to Figure 5 and Figure 10, the pre - film assembly 34 further includes a hollow tube 344 rotatably mounted on at least one support plate 341 and a positioning rod 345 slidably inserted into the hollow tube 344. The positioning rod 345 is mounted on the first sealed box body 3421. In this structure, one end of the hollow tube 344 is open, and the positioning rod 345 extends into the hollow tube 344 and can move therein. Furthermore, it can cooperate with the guide groove 3411 to achieve the directional movement of the film - sucking main body 342, improving the movement accuracy of the film - sucking main body 342. The pre - film assembly 34 further includes a connecting rod 346 connecting two support plates 341. Rotating seats 347 are respectively sleeved at both ends of the connecting rod 346, and the hollow tube 344 is mounted on each rotating seat 347, thus realizing the rotation of the hollow tube 344.

[0059] Optionally, please refer to Figure 4 and Figure 10 , a rack 3412 is mounted at one end of each support plate 341; the film - applying mechanism 3 further includes a transmission shaft 35 mounted on the frame 31, two gears 351 respectively mounted at both ends of the transmission shaft 35 and meshing with the corresponding racks 3412, and a third power member 352 for driving the transmission shaft 35 to rotate to drive the two support plates 341 to lift. The third power member 352 is mounted on the frame 31 and is connected to the transmission shaft 35. In this structure, the third power member 352 can drive the pre - film assembly 34 to lift, cooperate with the second power member 343 to drive the movement of the film - sucking main body 342, increase the movement displacement of the film - sucking main body 342, and realize an effective pre - film operation. Optionally, the third power member 352 can be a servo motor or a stepping motor, etc., and is not uniquely defined here.

[0060] Furthermore, please refer to Figure 5 and Figure 11, as a specific implementation of the film laminating machine provided by the embodiments of the present invention, two card slots (not labeled in the figure) for supporting both ends of the film roll 1 are provided on the frame 31; the film laminating mechanism 3 further includes a dry film feeding component 36 for feeding the film. The dry film feeding component 36 is arranged between the card slot and the pre-film laminating component 34; the dry film feeding component 36 includes a first roller 361 and a second roller 362 respectively installed on the frame 31 and arranged along the width direction of the frame 31, a fourth power component 363 for driving the first roller 361 to rotate, and two fifth power components 364 for driving the second roller 362 to move so that the outer peripheral surface of the second roller 362 is tangent to the outer peripheral surface of the first roller 361; the fourth power component 363 is installed on the frame 31, the fourth power component 363 is connected to the first roller 361, the two fifth power components 364 are respectively installed on the frame 31, and both ends of the second roller 362 are respectively connected to the fifth power components 364. In this structure, when both ends of the support shaft 11 are respectively inserted into the corresponding card slots, the frame 31 can support the film roll 1. At this time, pull out a section of the dry film 12 and place it between the first roller 361 and the second roller 362. When the two fifth power components 364 drive the second roller 362 to move and be tangent to the first roller 361, the fourth power component 363 drives the first roller 361 to rotate, and can drive the second roller 362 to rotate together. Through the synchronous reverse rotation of the first roller 361 and the second roller 362, the dry film 12 on the film roll 1 can be automatically pulled out, realizing automatic and continuous film feeding, thereby improving the film laminating efficiency. Optionally, the fourth power component 363 can be a servo motor or a stepping motor, etc.; the fifth power component 364 can be a cylinder or an oil cylinder, etc., and none of them are uniquely defined here.

[0061] Further, please refer to Figure 5 and Figure 11, as a specific implementation of the film laminating machine provided in the embodiments of the present invention, the film laminating mechanism 3 further includes a tension component 37 for pre-releasing the dry film 12 when the pre-film laminating component 34 performs pre-film lamination. The tension component 37 is disposed between the dry film feeding component 36 and the pre-film laminating component 34; the tension component 37 includes a tension rod 371, two connecting rod members 372 installed at both ends of the tension rod 371, and two sixth power components 373 for respectively driving the connecting rod members 372 to rotate to drive the tension rod 371 to move; each connecting rod member 372 is installed on the frame 31, each sixth power component 373 is connected to the corresponding connecting rod member 372, and each sixth power component 373 is installed on the frame 31. With this structure, when the pre-film laminating component 34 presses the dry film 12 against the surface close to the component to be film laminated, a certain length needs to be reserved for the dry film 12 to prevent phenomena such as the pre-film laminating component 34 breaking the dry film 12. When performing pre-film lamination, the two sixth power components 373 drive the tension rod 371 to rotate from the horizontal position to the vertical position, so that a certain length of the dry film 12 can be pulled out, and then the tension rod 371 rotates back to the initial position. Since there is a section of the pulled-out dry film 12, when the pre-film laminating component 34 presses the dry film 12 downward, this pulled-out dry film 12 is gradually straightened, thus providing a sufficient buffer distance for the pre-film lamination operation, and further playing a certain buffer protection role for the dry film 12. Optionally, the sixth power component 373 can be a cylinder or an oil cylinder, etc., and is not limited thereto uniquely.

[0062] Optionally, please refer to Figure 5 and Figure 12 , the film laminating mechanism 3 further includes a film cutting component 38 installed on the frame 31 and located outside the pre-film laminating component 34. The film cutting component 38 includes a support frame 3 eight one installed on the frame 31 and arranged along the width direction of the frame 31, a driving wheel 3 eight two and a driven wheel 3 eight three rotatably installed at both ends of the support frame 3 eight one, a connecting belt 3 eight four connecting the driving wheel 3 eight two and the driven wheel 3 eight three, a cutting member 385 installed on the connecting belt 3 eight four and used for cutting the dry film 12, and a seventh power component 386 for driving the driving wheel 3 eight two to rotate; the seventh power component 386 is installed on the support frame 3 eight one, and the seventh power component 386 is connected to the driving wheel 3 eight two. With this structure, when the tail end of the component to be film laminated completes the film lamination operation, the seventh power component 386 drives the connecting belt 3 eight four and the cutting member 385 to move along the width direction of the frame 31, so that the dry film 12 can be cut, realizing an automatic cutting operation, which is time-saving and labor-saving. Optionally, the seventh power component 386 can be a servo motor or a stepping motor, etc., and is not limited thereto uniquely.

[0063] Optionally, a guide rod 387 is arranged along the length direction of the support frame 381, and the cutting member 385 is sleeved on the guide rod 387. The guide rod 387 can play a certain guiding role for the movement of the cutting member 385.

[0064] Optionally, please also refer to Figure 8 , the film pasting mechanism 3 further includes a second film suction assembly 39 for sucking the end of the dry film 12 cut by the film cutting assembly 38. The second film suction assembly 39 is installed on the frame 31, the second film suction assembly 39 is arranged between the first film suction assembly 33 and the pre-film pasting assembly 34, and the second film suction assembly 39 is connected to the air extraction assembly. With this structure, when the film cutting assembly 38 cuts the dry film 12, the tail of the dry film 12 has not been attached to the object to be pasted yet. Therefore, the second film suction assembly 39 can suck the tail of the dry film 12, preventing the tail of the dry film 12 from directly attaching to the object to be pasted, thereby improving the film pasting quality.

[0065] Optionally, please also refer to Figure 13 , the second film suction assembly 39 includes a second sealed box body 391 having a second accommodation space (not shown in the figure) and a plurality of second connecting pipes 392 connecting the second accommodation space to the air extraction assembly. A plurality of second air extraction holes 393 are formed on the side of the second sealed box body 391 facing the dry film 12. With this structure, when the air extraction assembly extracts air, effective suction of the dry film 12 can be achieved through the second connecting pipes 392, the second accommodation space, and the plurality of second air extraction holes 393, improving the film suction effect.

[0066] Furthermore, please also refer to Figure 14 , as a specific implementation manner of the film pasting machine provided by the embodiment of the present invention, the handling mechanism 4 includes a material taking assembly 41 for supporting both ends of the film roll 1, a horizontal moving assembly 42 for driving the material taking assembly 41 to move horizontally, and a vertical moving assembly 43 for driving the horizontal moving assembly 42 to move up and down; the material taking assembly 41 is slidably installed on the horizontal moving assembly 42, the horizontal moving assembly 42 is slidably installed on the vertical moving assembly 43, and the vertical moving assembly 43 is installed on the frame 31. With this structure, the two ends of the support shaft 11 of the film roll 1 can be supported and extracted by the material taking assembly 41, thereby realizing effective support for the film roll 1; the material taking assembly 41 can be driven to move horizontally and vertically by the horizontal moving assembly 42 and the vertical moving assembly 43 respectively, facilitating the movement of the film roll 1 to the two card slot positions of the film pasting mechanism 3. Therefore, the handling mechanism 4 can replace the operation of manually handling the film roll 1, and has the advantages of high film roll 1 loading efficiency, high safety factor, time saving and labor saving.

[0067] Optionally, please also refer to Figure 14 and Figure 15, the vertical movement component 43 includes two first transmission members 431 for driving the horizontal movement component 42 to move up and down and a driving member 432 for driving the two first transmission members 431 to operate synchronously. The two first transmission members 431 are relatively installed on the frame 31, the driving member 432 is respectively connected to the two first transmission members 431, and both ends of the horizontal movement component 42 are slidably installed on the corresponding first transmission members 431. With this structure, the driving member 432 can drive the two first transmission members 431 simultaneously, and the movement synchronization of the two first transmission members 431 is good, improving the reliability of the horizontal movement component 42 moving in the vertical direction. In other embodiments, the two first transmission members 431 can also be separately driven by a servo motor or a stepping motor, etc., and this is not limited uniquely here.

[0068] Optionally, please refer to Figure 14 and Figure 15 , each first transmission member 431 includes a first base 433 installed on the frame 31, a first lead screw 434 rotatably installed on the first base 433, and a first slider 435 installed on the first lead screw 434. The driving member 432 includes two rotating shafts 436, a speed reducer 437 respectively connecting one end of each rotating shaft 436 and the corresponding first lead screw 434, and a first driving member 438 for driving the two rotating shafts 436 to rotate to drive each first lead screw 434 to rotate; the other end of each rotating shaft 436 is connected to the first driving member 438, the first driving member 438 is installed on the frame 31, and both ends of the horizontal movement component 42 are respectively installed on the corresponding first sliders 435. With this structure, when the first driving member 438 drives the two rotating shafts 436 to rotate, each rotating shaft 436 can drive the corresponding first lead screw 434 to rotate through the corresponding speed reducer 437, thereby driving the corresponding first slider 435 to move in the vertical direction, and further driving the horizontal movement component 42 to move in the vertical direction, realizing the position adjustment of the film roll 1 in the vertical direction. Optionally, the first driving member 438 can be a servo motor, a stepping motor, etc., and this is not limited uniquely here.

[0069] Optionally, please refer to Figure 14 and Figure 16, the horizontal movement component 42 includes second transmission components 421 respectively installed on each first transmission member 431. Each second transmission component 421 includes a second base 422 installed on the corresponding first slider 435, a second lead screw 423 rotatably installed on the second base 422, a second slider 424 installed on the second lead screw 423, and a second driving member 425 for driving the second lead screw 423 to rotate; each second lead screw 423 is connected to the corresponding second driving member 425, each second driving member 425 is installed on the corresponding second base 422, and both ends of the material taking component 41 are respectively installed on the corresponding second sliders 424. In this structure, each second base 422 is arranged in the horizontal direction and is perpendicular to the first base 433. When each second driving member 425 drives the corresponding second lead screw 423 to rotate, each second slider 424 can slide on the corresponding second lead screw 423, thereby driving the material taking component 41 to move in the horizontal direction, realizing the position adjustment of the film roll 1 in the horizontal direction. In other embodiments, the two second lead screws 423 can also be driven simultaneously by the same servo motor or stepper motor, etc., just like the mode in which the above two first lead screws 434 are simultaneously driven by the first driving member 438, improving the synchronism of the rotation of the two second lead screws 423, which is not limited uniquely here. Optionally, each second driving member 425 can be a servo motor or a stepper motor, etc., which is not limited uniquely here.

[0070] Optionally, please refer to Figure 14 , each second transmission component 421 further includes a guide post 426 vertically installed on the frame 31. One end of each second base 422 is installed with a guide sleeve 427 sleeved on the corresponding guide post 426, and the other end of each second base 422 is connected to the corresponding first slider 435. In this structure, when each first slider 435 drives the corresponding second base 422 to move in the vertical direction, each second base 422 moves in the vertical direction on the corresponding guide post 426, playing a certain guiding role and improving the movement reliability of each second base 422.

[0071] Optionally, please refer to Figure 14 and Figure 17 , the material taking component 41 includes support arms 411 respectively installed on each second slider 424. The free ends of each support arm 411 are provided with hooks 412 for hooking the corresponding ends of the rotating shaft 436. In this structure, when taking the film roll 1, the position of the material taking component 41 in the horizontal and vertical directions is adjusted through the first transmission member 431 and the second transmission member 421, so that the two hooks 412 can hook the two ends of the rotating shaft 436, thereby driving the film roll 1 to move in the horizontal and vertical directions and transporting it to the corresponding working position.

[0072] Optionally, please refer to Figure 17, the handling mechanism 4 further includes a second sensor 413 installed on the material taking component 41. Optionally, the second sensor 413 is provided on each support arm 411. With this structure, the situation of the film roll 1 being transported to the corresponding work station can be sensed by the second sensor 413. When the film roll 1 is accurately transported to the work station, the second sensor 413 can send stop commands to the first driving member 438 and each second driving member 425 respectively, thereby improving the accuracy and reliability of the transportation of the film roll 1.

[0073] Further, please refer to Figure 2 and Figure 18 , as a specific implementation manner of the film pasting machine provided by the embodiment of the present invention, the film pasting machine further includes a chassis 2, and a feeding window 20 is opened on the chassis 2; the material moving mechanism 5 includes a base 51 installed in the chassis 2, a guiding frame 52 docked with the film pasting mechanism 3 to lead out the to-be-film-pasted part after film pasting from the film pasting mechanism 3, and a driving component 53 for driving the guiding frame 52 to rotate so that the guiding frame 52 is separated from the film pasting mechanism 3 to form a feeding channel 21; the feeding channel 21 is arranged opposite to the feeding window 20, the guiding frame 52 is rotatably installed on the base 51, the driving component 53 is installed on the base 51, and the driving component 53 is connected to the guiding frame 52. With this structure, the driving component 53 can drive the guiding frame 52 to rotate on the base 51, so as to realize the separation between the guiding frame 52 and the film pasting mechanism 3, and an upper feeding channel 21 opposite to the feeding window 20 is formed between the separated guiding frame 52 and the film pasting mechanism 3. When loading the film roll 1, the feeding window 20 is opened, and the feeding channel 21 can provide sufficient feeding space for the film roll 1, thereby improving the feeding efficiency.

[0074] Optionally, please refer to Figures 18 to 20 , the guiding frame 52 includes an outer frame body 521, a fixed shaft 522 and a plurality of rotating shafts 523 installed on the outer frame body 521 and arranged along the width direction of the outer frame body 521, and a driving structure (not marked in the figure) for driving each rotating shaft 523 to rotate; the fixed shaft 522 is rotatably installed on the base 51, the driving structure is installed on the outer frame body 521, and the driving component 53 is connected to the outer frame body 521. With this structure, the driving structure can drive each rotating shaft 523 to rotate, so as to guide the movement of the to-be-film-pasted part.

[0075] Optionally, the driving structure includes an output shaft 528 installed on the outer frame 521 and arranged along the length direction of the outer frame 521, an eighth power member 524 for driving the output shaft 528 to rotate so as to drive each rotating shaft 523 to rotate, and a direction-changing gear set (not shown in the figure) that respectively connects each rotating shaft 523 and the output shaft 528; the output shaft 528 is connected to the eighth power member 524, the eighth power member 524 is installed on the outer frame 521, and the driving assembly 53 is connected to the outer frame 521. In this structure, the eighth power member 524 can drive each rotating shaft 523 to rotate respectively through the output shaft 528 and the direction-changing gear set, and the to-be-filmed member can be moved to the corresponding working position. The driving assembly 53 drives the outer frame 521 to rotate around the fixed shaft 522 on the base 51, so as to realize the separation between the guiding frame 52 and the film-applying mechanism 3, and further form a feeding channel 21, which is convenient for the feeding operation. Optionally, the direction-changing gear set can be a bevel gear assembly, a worm and turbine assembly, etc.; the eighth power member 524 can be a servo motor or a stepping motor, etc., and is not uniquely limited herein.

[0076] Optionally, please also refer to Figure 20 , the guiding frame 52 further includes a plurality of cross bars 525 for enhancing the stiffness of the outer frame 521. A third inductor 526 for detecting the rotation speed of the rotating shaft 523 can be installed on each cross bar 525, which is convenient for controlling and adjusting the moving speed of the to-be-filmed member.

[0077] Optionally, please also refer to Figure 18 and Figure 19, the driving component 53 includes a ninth power member 531 for driving the guiding frame 52 to rotate around the fixed shaft 522, a sliding plate 513 for supporting the fixed shaft 522, and a lifting member 532 for driving the sliding plate 513 to move up and down. One end of the ninth power member 531 is hinged to the outer frame body 521, and the other end of the ninth power member 531 is installed on the base 51. The base 51 includes a base frame 511 and a positioning frame 512 provided on the base frame 511. The lifting member 532 includes a positioning plate 533 installed on the positioning frame 512 and a tenth power member 534 with one end connected to the sliding plate 513; the sliding plate 513 is slidably installed on the positioning plate 533, and the other end of the tenth power member 534 is installed on the positioning frame 512. In this structure, when the ninth power member 531 drives the outer frame body 521 to rotate around the fixed shaft 522, the end of the outer frame body 521 close to the film pasting mechanism 3 gradually separates from the film pasting mechanism 3, the guiding frame 52 can be folded and retracted, and a feeding channel 21 is formed between the guiding frame 52 and the film pasting mechanism 3. After the film roll 1 is loaded, the ninth power member 531 drives the outer frame body 521 to rotate and open, realizing the connection between the guiding frame 52 and the film pasting mechanism 3, and facilitating the guiding of the workpiece to be pasted to the corresponding working position. By the tenth power member 534, the sliding plate 513 can be driven to slide vertically on the positioning plate 533, thereby realizing the lifting of the guiding frame 52, and further cooperating with the ninth power member 531 to drive the rotation of the guiding frame 52 to adjust the space size of the feeding channel 21. Optionally, the ninth power member 531 and the tenth power member 534 can be cylinders or oil cylinders, etc., and are not limited uniquely here.

[0078] Optionally, please refer to Figure 19 and Figure 20 , the guiding frame 52 further includes a positioning guide rod 527 installed on the outer frame body 521 and arranged along the width direction of the outer frame body 521. A first positioning groove 5131 for the positioning guide rod 527 to extend into is correspondingly opened on the sliding plate 513, and a second positioning groove 5331 corresponding to the position of the first positioning groove 5131 is opened on the positioning plate 533. In this structure, when the ninth power member 531 drives the guiding frame 52 to be connected to the film pasting mechanism 3, the positioning guide rod 527 can extend into the first positioning groove 5131, playing a certain positioning and limiting role; the second positioning groove 5331 can play a certain avoiding role, increasing the moving stroke of the guiding frame 52 in the vertical direction; and it can also play a positioning and limiting role for the positioning guide rod 527.

[0079] Optionally, please refer to Figure 18 , a notch 5111 is opened on the base frame 511 at a position directly opposite to the feeding window 20. In this structure, when the feeding window 20 is opened, it is convenient to send the cart loaded with the film roll 1 into the feeding channel 21 through the notch 5111, thereby improving the feeding efficiency.

[0080] Optionally, please refer to Figure 21, the feeding mechanism 6 includes a guide frame 61 slidably mounted on the base 51, a plurality of rolling shafts 62 respectively mounted on the guide frame 61 and arranged along the width direction of the guide frame 61, a driving main shaft (not shown in the figure) mounted on the guide frame 61 and arranged along the length direction of the guide frame 61, an eleventh power member 63 for driving the driving main shaft to drive each rolling shaft 62 to rotate, and a direction-changing gear set (not shown in the figure) for connecting each rolling shaft 62 to the driving main shaft respectively; the guide frame 61 is docked with the feeding end of the film applying mechanism 3, the eleventh power member 63 is mounted on the guide frame 61, and the eleventh power member 63 is connected to the driving main shaft. With this structure, the rotation of the driving main shaft is driven by the eleventh power member 63, and each rolling shaft 62 can also be driven to rotate, so that the film-applying member arranged on the rolling shaft 62 can be transferred to the position of the feeding end of the film applying mechanism 3. A fourth inductor 64 for detecting the rotation speed of the rolling shaft 62 is arranged on the guide frame 61, which is convenient for detecting and controlling the moving speed of the film-applying member. Optionally, the direction-changing gear set can be a bevel gear assembly, a worm and turbine assembly, etc., and is not limited uniquely here.

[0081] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Film laminating machine, characterized in that: It includes a film pasting mechanism for pasting films, a feeding mechanism for guiding the workpiece to be pasted to the corresponding working position of the film pasting mechanism, a material transferring mechanism for taking out the workpiece to be pasted after film pasting from the film pasting mechanism, and a handling mechanism for transferring the film roll to the film pasting mechanism and removing the empty reel from the film pasting mechanism; the feeding mechanism and the material transferring mechanism are respectively arranged on both sides of the film pasting mechanism, and the feeding mechanism and the material transferring mechanism are respectively docked with the film pasting mechanism. The film pasting mechanism includes a frame, and the handling mechanism includes a material taking component for supporting both ends of the film roll, a horizontal moving component for driving the material taking component to move horizontally, and a vertical moving component for driving the horizontal moving component to lift; the material taking component is slidably installed on the horizontal moving component, the horizontal moving component is slidably installed on the vertical moving component, and the vertical moving component is installed on the frame. The material transferring mechanism includes a base, a guiding frame docked with the film pasting mechanism to take out the workpiece to be pasted after film pasting from the film pasting mechanism, and a driving component for driving the guiding frame to be horizontal to drive the workpiece to be pasted to move, and for driving the guiding frame to rotate to make the guiding frame inclined to form a feeding channel; the guiding frame is rotatably installed on the base, the driving component is installed on the base, and the driving component is connected to the guiding frame. The feeding mechanism includes a guiding frame slidably installed on the base, a plurality of rolling shafts respectively installed on the guiding frame and arranged along the width direction of the guiding frame, a driving main shaft installed on the guiding frame and arranged along the length direction of the guiding frame, an eleventh power component for driving the driving main shaft to drive each rolling shaft to rotate, and a direction changing gear set for connecting each rolling shaft with the driving main shaft respectively; the guiding frame is docked with the feeding end of the film pasting mechanism, the eleventh power component is installed on the guiding frame, and the eleventh power component is connected to the driving main shaft.

2. The film laminating machine according to claim 1, wherein: The film pasting mechanism includes two film pressing rollers and two extrusion rollers respectively rotatably installed on the frame, and a power component for driving each film pressing roller to rotate; the two extrusion rollers are arranged at corresponding positions between the two film pressing rollers, the outer peripheral surfaces of the two extrusion rollers are respectively tangent to the outer peripheral surfaces of the two film pressing rollers, the cross-sectional diameter of the extrusion roller is smaller than the cross-sectional diameter of the film pressing roller, and the power component is installed on the frame.

3. The film laminating machine according to claim 2, characterized in that: The film pasting mechanism further includes two rotating arms respectively supporting both ends of one film pressing roller, a rotating shaft connecting the two rotating arms, and a first power component for driving each rotating arm to rotate around the rotating shaft; the rotating shaft is installed on the frame, each first power component is installed on the frame, and each first power component and the corresponding film pressing roller are respectively connected to both ends of the corresponding rotating arm.

4. The film laminating machine according to claim 2, wherein: The film laminating mechanism further includes a first film suction assembly for sucking the dry film and a gas extraction assembly for air extraction. The gas extraction assembly and the first film suction assembly are respectively installed on the frame. The first film suction assembly is arranged on one side of the extrusion roller for feeding, and the gas extraction assembly is connected to the first film suction assembly.

5. The film laminating machine according to claim 4, wherein: The film laminating mechanism further includes a pre-film laminating assembly for pre-laminating the workpiece to be laminated. The pre-film laminating assembly is slidably installed on the frame and is located on one side of the first film suction assembly. The pre-film laminating assembly is connected to the gas extraction assembly.

6. The film laminating machine according to claim 5, characterized in that: The pre-film laminating assembly includes two oppositely arranged support plates installed on the frame, a film suction main body for sucking the film, and a second power member for driving the film suction main body to move on the two support plates. The two ends of the film suction main body are respectively slidably installed on the corresponding support plates. The film suction main body is connected to the gas extraction assembly. The second power member is connected to the film suction main body and is installed on the support plate. A rack is installed at one end of each support plate. The film laminating mechanism further includes a transmission shaft installed on the frame, two gears installed at both ends of the transmission shaft and respectively meshing with the corresponding racks, and a third power member for driving the transmission shaft to rotate to drive the two support plates to lift. The third power member is installed on the frame and is connected to the transmission shaft.

7. The film laminating machine according to claim 6, characterized in that: Two card slots for supporting both ends of the film roll are provided on the frame. The film laminating mechanism further includes a dry film feeding assembly for feeding the film. The dry film feeding assembly is arranged between the card slot and the pre-film laminating assembly. The dry film feeding assembly includes a first roller and a second roller respectively installed on the frame and arranged along the width direction of the frame, a fourth power member for driving the first roller to rotate, and two fifth power members for driving the second roller to move so that the outer peripheral surface of the second roller is tangent to the outer peripheral surface of the first roller. The fourth power member is installed on the frame and is connected to the first roller. The two fifth power members are respectively installed on the frame, and both ends of the second roller are respectively connected to the fifth power members.

8. The film laminating machine according to claim 7, wherein: The film laminating mechanism further includes a tension assembly for pre-feeding the dry film when the pre-film laminating assembly performs pre-film laminating. The tension assembly is arranged between the dry film feeding assembly and the pre-film laminating assembly. The tension assembly includes a tension rod, two connecting rod members installed at both ends of the tension rod, and two sixth power members for respectively driving the connecting rod members to rotate to drive the tension rod to move. Each connecting rod member is installed on the frame, each sixth power member is connected to the corresponding connecting rod member, and each sixth power member is installed on the frame.

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