Film tearing device for backlight source protection film in discontinuous plane state

Abstract

The invention relates to the technical field of film tearing machines, in particular to a film tearing device for a backlight source protective film in a discontinuous plane state, which comprises a support plate, a tape winding stepping motor and a film tearing stepping motor are respectively arranged at two ends of one side of the front surface of the support plate, a tape winding roller group I is arranged on one side of the front surface of the support plate, and a film tearing roller group II is arranged on the other side of the front surface of the support plate. A discharging roller and a collecting roller are rotationally arranged on the two sides of the top of the front surface of the supporting plate correspondingly, and a film tearing execution assembly is arranged at the bottom of the other side of the front surface of the supporting plate in a horizontal moving mode. The whole film tearing machine adopts a rolling structure form, the film tearing process is completed through electromechanical combination, the lifting action can be achieved by driving the warping plate through the jacking air cylinder, and the lifting height can be adjusted; film tearing and waste film treatment are carried out in the same process, and no additional film clamping mechanism is needed; the film tearing stroke can be adjusted, the film tearing device can adapt to tearing of a protective film of a backlight source in a discontinuous plane state, and a protruding structure on the periphery of the backlight source can be avoided and is prevented from being damaged.

Description

Technical Field

[0001] The invention relates to the technical field of film tearing machines, in particular to a film tearing device for a backlight source protective film in a discontinuous planar state. Background Art

[0002] Most of the existing backlight film tearing machines use a rectangular coordinate system to move the film mechanism. This traditional structure has many disadvantages in practical applications. On the one hand, the film and film clamping mechanisms are relatively independent, lacking effective coordination between the two, and the action continuity is poor. In the film tearing process, this incoherent action mode is prone to improper coordination. For example, if the speed of the film and the timing of the film clamping cannot be accurately matched, it is very easy to cause film tearing failure, seriously affecting production efficiency and product quality. On the other hand, the existing film tearing machine does not fully consider the state around the product to be torn off. In actual production scenarios, when the backlight source has been embedded in the casing, its periphery often presents a non-planar state. This complex surrounding environment poses a great challenge to the film tearing work. However, due to the lack of consideration for this special state, the traditional film tearing machine cannot flexibly adjust the film tearing strategy when facing a backlight source in a non-continuous planar state, and it is difficult to effectively and accurately tear off the protective film, thereby limiting its application in some specific production scenarios, and may cause damage to the backlight source due to forced film tearing, increasing production costs. Summary of the invention

[0003] The purpose of the present invention is to overcome the above problems or at least partially solve the above problems, and to propose a film-tearing device for a non-continuous planar backlight source protective film.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a film-tearing device for backlight source protective film in a non-continuous planar state, comprising a support plate, wherein two ends of one side of the front surface of the support plate are respectively provided with a tape winding stepping motor and a film-tearing stepping motor, a tape winding roller group 1 is provided on one side of the front surface of the support plate, and the number of rollers is not less than two, a discharging roller and a receiving roller are respectively rotatably provided on both sides of the top of the front surface of the support plate, and a film-tearing execution component is horizontally movably provided on the bottom of the other side of the front surface of the support plate, a tape winding roller group 2 is provided on the other end of the front side of the support plate and the film-tearing execution component, and the number of rollers is not less than two, a film-tearing tape is provided on the discharging roller, the film-tearing tape passes through the tape winding roller group 1 to the bottom of the film-tearing execution component, and becomes the waste tape after the film-tearing operation by the film-tearing execution component, and is wound on the receiving roller through the tape winding roller group 2;

[0005] The rear surface of the support plate is provided with two sets of transmission mechanisms, the film-tearing stepping motor can drive the film-tearing actuator to move horizontally and reciprocatingly through one set of transmission mechanisms, and the belt-winding stepping motor can drive the receiving roller to rotate through another set of transmission mechanisms;

[0006] The film tearing execution component includes a connecting plate that can move horizontally, a rotatable seesaw is arranged at the bottom of one side of the connecting plate, a pressure head that can adjust the clamping force during the film tearing process is arranged at one end of the seesaw, and a rotatable guide pulley is arranged on one side of the pressure head.

[0007] In a preferred embodiment, a tape pressing assembly is provided on one side of the front surface of the support plate facing the winding roller group 1, which is used to press and hold the film tearing tape on the winding roller group 1, and a waste pressing assembly is provided on the other side of the front surface of the support plate facing the winding roller group 2, which is used to press and hold the waste tape on the winding roller group 2.

[0008] In a preferred embodiment, the film tearing actuator further comprises a lifting cylinder arranged at one end of the front side of the connecting plate, which is used to push the seesaw plate to rotate, thereby lifting the pressure head.

[0009] In a preferred embodiment, an adjusting screw is threaded on one side of the bottom end of the seesaw, a spring is clamped on the top end of the adjusting screw, the top of the spring is against the lower surface of the pressure head, a guide column is provided on one side of the bottom of the pressure head, a seesaw extends from the bottom of the guide column, and the outer wall of the guide column has a rubber sleeve.

[0010] In a preferred embodiment, a detection sensor for detecting the number of waste films on the waste belt is arranged on the top of the pressure head.

[0011] In a preferred embodiment, clamping plates are provided in the middle of both sides of the seesaw, and rotating shafts are rotatably provided at the inner tops of the two clamping plates, and the rotating shafts are connected to the connecting plates.

[0012] In a preferred embodiment, the two groups of transmission mechanisms are respectively a film tearing synchronous transmission group and a belt winding synchronous transmission group, both of which include synchronous wheels and synchronous belts, and the belt winding synchronous transmission group also includes a belt winding idler wheel for adjusting tension.

[0013] In a preferred embodiment, the film tearing execution assembly further includes a synchronous belt connector disposed on the top of the connecting plate, and the synchronous belt connector extends to the rear side of the supporting plate and is connected to a synchronous belt in the film tearing synchronous transmission group.

[0014] In a preferred embodiment, a tape guide assembly is also provided at the middle of the bottom end of the front surface of the support plate.

[0015] In a preferred embodiment, a photoelectric switch is provided at the rear bottom of the support plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the present invention adopts a rolling structure as a whole, and completes the film tearing process through electromechanical combination, wherein the lifting cylinder drives the seesaw to realize the lifting action, and the lifting height is adjustable; a spring is clamped at the top of the adjusting screw, and the spring is against the pressure head, and the clamping force during the film tearing process is adjustable; film tearing and waste film processing are in the same process, and no additional film clamping mechanism is required; the film tearing stroke is adjustable, which can adapt to the tearing of the protective film of the backlight source in a non-continuous planar state, and can avoid the protruding structure on the periphery of the backlight source to prevent it from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of another angle of the present invention;

[0020] Figure 4 It is a rear view structural schematic diagram of the present invention;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the film-tearing execution component in the present invention.

[0022] In the figure: 1. film tearing stepper motor; 2. tape winding stepper motor; 3. tape winding roller group 1; 4. tape pressing assembly; 5. film tearing tape; 6. unwinding roller; 7. receiving roller; 8. waste tape; 9. waste pressing assembly; 10. tape winding roller group 2; 11. film tearing execution assembly; 111. lifting cylinder; 112. rocker; 113. adjusting screw; 114. pressure head; 115. guide pulley; 116. detection sensor; 117. synchronous belt connector; 118. connecting plate; 119. clamping plate; 12. product to be film-torn; 13. film tearing tape winding track; 14. tape guide assembly; 15. film tearing synchronous transmission group; 16. tape winding synchronous transmission group; 17. tape winding idler; 18. photoelectric switch; 19. support plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-5The present invention provides a technical solution: a film-tearing device for a non-continuous planar backlight protective film, comprising a support plate 19, a tape winding stepping motor 2 and a film-tearing stepping motor 1 are respectively arranged at two ends of one side of the front surface of the support plate 19, a tape winding roller group 1 3 is arranged on one side of the front surface of the support plate 19, and the number of rollers is not less than two, a discharge roller 6 and a receiving roller 7 are rotatably arranged on both sides of the top of the front surface of the support plate 19, and a film-tearing execution component 11 is horizontally movable at the bottom of the other side of the front surface of the support plate 19, a tape winding roller group 2 10 is arranged on the other end of the front side of the support plate 19 and on the film-tearing execution component 11, and the number of rollers is not less than two, and a film-tearing adhesive tape 5 is arranged on the discharge roller 6, and the film-tearing adhesive tape 5 passes through the tape winding roller group 1 3 to the bottom of the film-tearing execution component 11, and becomes a waste tape 8 after the film-tearing operation of the film-tearing execution component 11, and is wound on the receiving roller 7 through the tape winding roller group 2 10;

[0025] The rear surface of the support plate 19 is provided with two sets of transmission mechanisms. The film-tearing stepping motor 1 can drive the film-tearing actuator 11 to move horizontally back and forth through one set of transmission mechanisms, and the belt-winding stepping motor 2 can drive the receiving roller 7 to rotate through another set of transmission mechanisms.

[0026] The film tearing execution component 11 includes a connecting plate 118 that can move horizontally, a rotatable seesaw 112 is arranged at the bottom of one side of the connecting plate 118, a pressure head 114 that can adjust the clamping force during the film tearing process is arranged at one end of the seesaw 112, and a rotatable guide pulley 115 is arranged on one side of the pressure head 114.

[0027] During specific implementation, a tape pressing assembly 4 is provided on one side of the front surface of the support plate 19 toward the tape winding roller group 1 3, and is used to press and hold the film tearing tape 5 on the tape winding roller group 1 3; a waste pressing assembly 9 is provided on the other side of the front surface of the support plate 19 toward the tape winding roller group 2 10, and is used to press and hold the waste tape 8 on the tape winding roller group 2 10, wherein the tape pressing assembly 4 can adjust the tension and flatness of the tape through the cylinder therein, and the waste pressing assembly 9 can adjust the tension and flatness of the waste tape through the adjusting knob therein.

[0028] In specific implementation, the film tearing execution component 11 also includes a lifting cylinder 111 arranged at one end of the front side of the connecting plate 118, which is used to push the rocker 112 to rotate, thereby lifting the pressure head 114. By adjusting the stroke of the lifting cylinder 111, the height to which the pressure head 114 is lifted can be adjusted.

[0029] During specific implementation, an adjusting screw 113 is screwed on one side of the bottom end of the seesaw 112, and a spring is clamped on the top of the adjusting screw 113. The top of the spring rests on the lower surface of the pressing head 114, and a guide column is provided on one side of the bottom of the pressing head 114. The seesaw 112 extends from the bottom of the guide column, and the outer wall of the guide column has a rubber sleeve. By rotating the adjusting screw 113, the pressing head 114 can be pushed to move through the spring to adjust the clamping force during the film tearing process.

[0030] During specific implementation, a detection sensor 116 for detecting the number of waste films on the waste belt 8 is disposed on the top of the pressure head 114 .

[0031] In specific implementation, a clamping plate 119 is provided in the middle of both sides of the rocker 112. A rotating shaft is rotatably provided at the inner top of the two clamping plates 119, and the rotating shaft is connected to the connecting plate 118. The rocker 112 can be fixed in the clamping plate 119 by locking screws, which facilitates the disassembly and assembly of the rocker 112.

[0032] In specific implementation, the two transmission mechanisms are respectively a film-tearing synchronous transmission group 15 and a belt-winding synchronous transmission group 16. Both the film-tearing synchronous transmission group 15 and the belt-winding synchronous transmission group 16 include synchronous wheels and synchronous belts. The belt-winding synchronous transmission group 16 also includes a belt-winding idler wheel 17 for adjusting tension.

[0033] In specific implementation, the film tearing execution component 11 also includes a synchronous belt connector 117 arranged on the top of the connecting plate 118. The synchronous belt connector 117 extends to the rear side of the support plate 19 and is connected to the synchronous belt in the film tearing synchronous transmission group 15. Through the synchronous belt connector 117, the film tearing stepper motor 1 can drive the film tearing synchronous transmission group 15 to operate. The film tearing synchronous transmission group 15 drives the connecting plate 118 to move horizontally back and forth through the synchronous belt connector 117, thereby driving the entire film tearing execution component 11 to move horizontally back and forth.

[0034] In specific implementation, a tape guide assembly 14 is further provided at the middle of the bottom end of the front surface of the support plate 19 , which can guide the film-tearing tape 5 from the tape winding roller assembly 1 3 to the film-tearing execution assembly 11 .

[0035] During specific implementation, a photoelectric switch 18 is provided at the rear bottom of the support plate 19, and the film tearing stepper motor 1 drives the film tearing synchronous transmission group 15 to operate. The film tearing execution component 11 is connected to the synchronous belt of the film tearing synchronous transmission group 15 through the synchronous belt connector 117 thereon, and can produce horizontal left and right movement. The stroke position and speed can be controlled by the photoelectric switch 18 in conjunction with the pulse quantity, direction and frequency of the film tearing stepper motor 1.

[0036] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows:

[0037] When the backlight source enters the next assembly production process, it is necessary to tear off the protective film on the surface. However, when the backlight source has been embedded in the casing, the periphery is non-planar, which requires that the film cannot be continuously fed in one direction when being torn off. The film-tearing actuator 11 is in the leftmost initial position (which can be controlled by a photoelectric switch). After the film-tearing product 12 is delivered to the position by the conveyor belt, the film-tearing stepper motor 1 starts to reverse and drives the film-tearing actuator 11 to move horizontally to the right through the film-tearing synchronous transmission group 15. At the same time, the lifting cylinder 111 extends out during operation, presses the rocker 112, and lifts the pressure head 114. The lifting height can be adjusted by the stroke of the lifting cylinder 111 to avoid the protrusion in the feeding direction of the film-tearing product 12. After moving to the right working position, the film-tearing stepper motor 1 reverses and stops, and the lifting cylinder 111 retracts. The pressure head 114 falls down under the action of gravity and presses the film-tearing product 12. The clamping force of the pressure head 114 during the film-tearing process can be adjusted by the adjusting screw 113. Then, the film-tearing stepper motor 1 starts to rotate forward, and the tape-winding stepper motor 2 starts to work at the same time. The film-tearing stepper motor 1 drives the film-tearing actuator 11 to move horizontally to the left through the film-tearing synchronous transmission group 15. At the same time, the tape-winding stepper motor 2 drives the film-tearing tape 5 to rotate and pull in the opposite direction through the tape-winding synchronous transmission group 16 and the tape-winding idler wheel 17 to tear off the protective film on the backlight source. The film-tearing actuator 11 moves to the left for a film sheet and then stops. The tape-winding stepper motor 2 also stops after a certain delay, completing the processing of a product. After that, the next product can be processed, that is, the conveyor belt removes the processed product, and the next product to be torn enters, and the operation is cyclical.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film-tearing device for a non-continuous planar backlight protective film, characterized in that: The invention comprises a support plate (19), wherein two ends of one side of the front surface of the support plate (19) are respectively provided with a tape winding stepping motor (2) and a film tearing stepping motor (1), wherein one side of the front surface of the support plate (19) is provided with a tape winding roller group (3), wherein the number of rollers is not less than two, and a material discharge roller (6) and a material receiving roller (7) are respectively rotatably provided on both sides of the top of the front surface of the support plate (19), and a film tearing execution group is horizontally movable on the bottom of the other side of the front surface of the support plate (19). The support plate (19) comprises a plurality of film strips (11), a plurality of film strips (11) and a plurality of film strips (11) arranged on the support plate (19), wherein the plurality of film strips (11) are provided ... The rear surface of the support plate (19) is provided with two sets of transmission mechanisms, the film-tearing stepping motor (1) can drive the film-tearing actuator (11) to move horizontally back and forth through one set of transmission mechanisms, and the tape-winding stepping motor (2) can drive the receiving roller (7) to rotate through another set of transmission mechanisms; The film tearing execution component (11) includes a connecting plate (118) that can move horizontally, a rotatable seesaw (112) is arranged at the bottom of one side of the connecting plate (118), a pressure head (114) that can adjust the pressing force during the film tearing process is arranged at one end of the seesaw (112), and a rotatable guide pulley (115) is arranged on one side of the pressure head (114).

2. The film-tearing device for a non-continuous planar backlight protective film according to claim 1, characterized in that: A tape pressing assembly (4) is provided on one side of the front surface of the support plate (19) facing the first tape winding roller group (3) for pressing and holding the film tearing tape (5) on the first tape winding roller group (3); and a waste material pressing assembly (9) is provided on the other side of the front surface of the support plate (19) facing the second tape winding roller group (10) for pressing and holding the waste tape (8) on the second tape winding roller group (10).

3. The film-tearing device for a non-continuous planar backlight protective film according to claim 2, characterized in that: The film-tearing execution assembly (11) further comprises a lifting cylinder (111) arranged at one end of the front side of the connecting plate (118) and used for pushing the seesaw plate (112) to rotate.

4. The film-tearing device for a non-continuous planar backlight protection film according to claim 3, characterized in that: An adjusting screw (113) is screwed to one side of the bottom end of the seesaw (112), a spring is clamped to the top end of the adjusting screw (113), the top of the spring is against the lower surface of the pressure head (114), a guide column is arranged on one side of the bottom of the pressure head (114), the seesaw (112) is extended from the bottom of the guide column, and the outer wall of the guide column has a rubber sleeve.

5. The film-tearing device for a non-continuous planar backlight protection film according to claim 4, characterized in that: A detection sensor (116) for detecting the number of waste films on the waste belt (8) is arranged on the top of the pressure head (114).

6. The film-tearing device for a non-continuous planar backlight protection film according to claim 5, characterized in that: Clamps (119) are provided at the middle of both sides of the seesaw (112), and rotating shafts are rotatably provided at the inner tops of the two clamps (119), and the rotating shafts are connected to the connecting plates (118).

7. The film-tearing device for a non-continuous planar backlight protection film according to claim 6, characterized in that: The two groups of transmission mechanisms are respectively a film-tearing synchronous transmission group (15) and a belt-winding synchronous transmission group (16). Both the film-tearing synchronous transmission group (15) and the belt-winding synchronous transmission group (16) include synchronous wheels and synchronous belts. The belt-winding synchronous transmission group (16) also includes a belt-winding idler wheel (17) for adjusting tension.

8. The film-tearing device for a non-continuous planar backlight protection film according to claim 7, characterized in that: The film tearing execution assembly (11) also includes a synchronous belt connector (117) arranged on the top of the connecting plate (118), and the synchronous belt connector (117) extends to the rear side of the supporting plate (19) and is connected to the synchronous belt in the film tearing synchronous transmission group (15).

9. The film-tearing device for a non-continuous planar backlight protection film according to claim 8, characterized in that: A tape guide assembly (14) is also provided at the middle of the bottom end of the front surface of the support plate (19).

10. The film-tearing device for a non-continuous planar backlight protection film according to claim 9, characterized in that: A photoelectric switch (18) is arranged at the rear bottom of the support plate (19).

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