CN116923829A - Automatic film tearing method and device - Google Patents
Automatic film tearing method and device Download PDFInfo
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- CN116923829A CN116923829A CN202210371423.9A CN202210371423A CN116923829A CN 116923829 A CN116923829 A CN 116923829A CN 202210371423 A CN202210371423 A CN 202210371423A CN 116923829 A CN116923829 A CN 116923829A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B69/00—Unpacking of articles or materials, not otherwise provided for
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Abstract
一种自动撕膜方法及装置，用以撕除一设置于物体表面上的薄膜，其中，该自动撕膜方法包含以下步骤：设定一施力支点，其中施力支点位于物体的外侧；于薄膜设定一起膜处；以及以施力支点为轴心，由该起膜处对薄膜施行变动半径的圆弧牵引力以撕除物体表面上的薄膜；由此，本发明的自动撕膜方法可根据不同撕膜阶段以变动半径的圆弧牵引力来撕除物体表面上的薄膜，以减少撕膜路径及降低撕膜时所需的力，进而减少撕膜时间并提高撕膜效率。
An automatic film tearing method and device for tearing off a film arranged on the surface of an object, wherein the automatic film tearing method includes the following steps: setting a force application fulcrum, wherein the force application fulcrum is located on the outside of the object; The film is set to a film position; and with the force application fulcrum as the axis, a circular traction force of varying radius is applied to the film from the film starting point to tear off the film on the surface of the object; thus, the automatic film tearing method of the present invention can According to different film tearing stages, the film on the surface of the object is peeled off with arc traction force of varying radius to reduce the film tearing path and the force required for film tearing, thereby reducing the film tearing time and improving the film tearing efficiency.
Description
Technical Field
The present invention relates to an automatic film tearing method and device, and in particular, to an automatic film tearing method and device applicable to various flat film materials.
Background
With the rapid development of industry, equipment automation has gradually become a major trend in production and manufacturing industries. Because the production and manufacturing processes of the product are gradually automated without manual work, the necessary production process is sometimes added in the manufacturing process of the product to avoid damage of the product. Taking the display panel industry as an example, when producing display panels (such as flat panels, LED screens, LCD screens, etc.), a protective film is attached to the surface of the display panel to avoid the problem that the panel is scratched during transportation. When the display panel is required to be processed or is required to be installed later, the protective film is torn off. Therefore, the production equipment of the display panel generally also includes a film tearing device to tear off the protective film on the display panel.
In the existing film tearing equipment, corner film lifting is mostly adopted, and the film tearing is carried out in a straight line path with a diagonal line or a 45-degree angle. However, when the film tearing mechanism of the film tearing apparatus tears the protective film of the object in a straight path, the film tearing mechanism must be reset again along the film tearing path. Further, when the film is torn in a straight line path, the film tearing path of the film tearing mechanism needs to be twice the diagonal length of the object, that is, the film tearing device needs to reserve a great amount of space to be used for the film tearing of the film tearing mechanism, and therefore the device space is wasted. In addition, since the film tearing mechanism is used for tearing films in a straight line path, the film tearing mechanism can generate larger moment, and the situation of product displacement and even distortion can be caused. Further, when the size or aspect ratio of the object is excessively large, the situation of product displacement and distortion may be more serious. In addition, when the dyestripping mechanism tears the membrane along the dyestripping path and resets along the dyestripping path, the dyestripping equipment may need to plan the throwing membrane path again for the dyestripping mechanism to discard the guarantee membrane of tearing along the throwing membrane path, and then increases total path and inefficiency.
Disclosure of Invention
Accordingly, the present invention is directed to an automatic film tearing method and apparatus, which can solve the problems of the prior art, effectively reduce the film tearing time and improve the film tearing efficiency, and can save space, thereby providing more innovation.
In order to achieve the above object, the present invention discloses an automatic film tearing method for tearing a film disposed on an object surface of an object, wherein the automatic film tearing method comprises the following steps:
setting a force application fulcrum, wherein the force application fulcrum is positioned at the outer side of the object;
setting a film together position on the film; and
the film is pulled from the film-lifting position by taking the force-applying pivot as the axis, and an arc traction force with a variable radius is applied to the film to tear the film.
Wherein, the step of taking the force application pivot as the axis, taking the film from the film-forming position, and applying the arc traction force to the film to tear the film, further comprises the following steps:
setting the distance between the force applying pivot and the film lifting position of the film as a first force arm, and setting the distance between the force applying pivot and the film stripping position of the film as a second force arm, wherein the first force arm is larger than the second force arm;
taking the force application pivot as an axis, and applying the circular arc traction force with a gradually-reduced changing radius to the film from the film lifting position, wherein the gradually-reduced changing radius is that the first force arm is switched to the second force arm; and
and taking the force application pivot as an axis, applying the circular arc traction force with an increasing and changing radius to the film so as to tear the film from the demolding position, wherein the increasing and changing radius is that the second force arm is switched to the first force arm.
Wherein the method further comprises the following steps:
before the circular arc traction with the gradually changing radius is applied, the circular arc traction without the changing radius is applied to the film by taking the force application pivot point as the axis, and the circular arc traction with the gradually changing radius is applied by the second force arm.
Wherein the method further comprises the following steps:
the film separated from the object is thrown off by the first force arm by taking the force application pivot as an axis.
Wherein the film lifting part and the film removing part are positioned at the corners of the two ends of the film adjacent to the side edges of the force application pivot.
Also disclosed is an automatic film tearing device, characterized by comprising:
a carrying platform for carrying an object, the surface of the object is provided with a film which is removed in advance; and
the film tearing assembly is adjacently arranged on the bearing platform and comprises a rotating shaft, a variable-diameter rotating arm and a film tearing device, wherein the rotating shaft is provided with an axle center, the variable-diameter rotating arm is arranged above the bearing platform, one end of the variable-diameter rotating arm is connected with the rotating shaft, the other end of the variable-diameter rotating arm is connected with the film tearing device, and the film tearing device is used for grabbing the pre-removed film at a film combining position of the film;
the variable diameter rotating arm is driven by the rotating shaft and drives the film tearing device to generate an arc traction force with a variable radius so as to tear the film.
The variable diameter rotating arm comprises a main body and a telescopic rod connected with a first end of the main body.
Wherein, further include a balancing weight set up in the second end of this first end of this body relatively.
The variable radius rotating arm rotates with the first rotating radius and the second rotating radius respectively to generate a first arc path and a second arc path, the first rotating radius is larger than the second rotating radius, the film tearing device moves sequentially with the first arc path, the second arc path and the first arc path to tear off the film, and the film lifting position is located on the first arc path.
The film tearing device is switched from the first circular arc path to the second circular arc path to move when the circular arc traction force at the film lifting position is 45 degrees, and is switched from the second circular arc path to the first circular arc path to move when the circular arc traction force at the film lifting position is 135 degrees.
Wherein, the film tearing device is provided with a sucker for absorbing the film.
Wherein the film tearing device is a clamping jaw for clamping the film.
The film tearing device comprises a fixed clamping jaw, a movable clamping jaw and a cylinder, wherein the fixed clamping jaw and the movable clamping jaw are oppositely arranged, the movable clamping jaw is connected with the cylinder, and the movable clamping jaw moves towards the fixed clamping jaw according to the action of the cylinder so as to clamp the film.
In summary, the automatic film tearing method and device of the invention can switch different rotation radiuses and arc paths according to different film tearing stages to tear off the film on the object, so as to reduce the film tearing path, reduce the force required during film tearing and reduce the risk of product displacement, further reduce the film tearing time and improve the film tearing efficiency. In addition, the automatic film tearing device can also simultaneously achieve film tearing and film throwing through a circular arc path mode, so that the total path is shortened, the arrangement of elements is more compact, the film tearing time is further shortened, and the space is saved.
Drawings
FIG. 1 is a flowchart showing steps of an automatic film tearing method according to an embodiment of the invention.
FIG. 2 is a flowchart showing further steps of the automatic film tearing method according to FIG. 1.
Fig. 3A to 3E are schematic flow diagrams illustrating an automatic film tearing method according to an embodiment of the invention.
Fig. 4 is a schematic structural view of an automatic film tearing device according to an embodiment of the invention.
FIG. 5 is a schematic view of the automatic film tearing device according to FIG. 1 at another view angle.
FIG. 6 is a schematic view of the automatic film tearing device according to FIG. 1 at another view angle.
FIG. 7 is a schematic diagram showing a structure of a film tearing device of the automatic film tearing device according to FIG. 1.
FIG. 8 is a schematic diagram showing a structure of a film tearing device of the automatic film tearing device according to an embodiment of the invention.
FIG. 9 is a schematic diagram showing a structure of a film tearing device of the automatic film tearing device according to an embodiment of the invention.
Detailed Description
In order that the advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It should be noted that these embodiments are merely representative embodiments of the present invention, and the specific methods, devices, conditions, materials, etc. are not meant to limit the present invention or the corresponding embodiments. The devices are shown for expressing relative positions and are not drawn to actual scale.
In the description of the present specification, reference to the terms "one embodiment," "another embodiment," or "portions of the embodiment," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments.
Please refer to fig. 1, fig. 2, and fig. 3A to fig. 3E. FIG. 1 is a flowchart showing steps of an automatic film tearing method according to an embodiment of the invention. FIG. 2 is a flowchart showing further steps of the automatic film tearing method according to FIG. 1. Fig. 3A to 3E are schematic flow diagrams illustrating an automatic film tearing method according to an embodiment of the invention. The automatic film tearing method of the present invention is used to tear off the pre-torn film 91 provided on the surface of the object 9. As shown in fig. 1, 2 and 3A, in the present embodiment, the automatic film tearing method includes the following steps: step S1: setting a force application fulcrum a, wherein the force application fulcrum a is positioned on the outer side of the object 9; step S2: setting a film-lifting position and a film-releasing position on the film 91; step S3: the film 91 is pulled from the film-forming portion with the urging fulcrum a as the axis, and the film 91 is peeled off by applying a circular-arc pulling force of varying radius to the film-releasing portion.
Further, in step S3 in fig. 1, the automatic film tearing method further includes the following steps: step S31: setting the distance between the force applying fulcrum a and the film lifting position of the film 91 as a first force arm R1, and setting the distance between the force applying fulcrum a and the film stripping position of the film 91 as a second force arm R2, wherein the first force arm R1 is larger than the second force arm R2; step S32: taking the force application pivot point a as the axis, performing arc traction with a gradually-reduced variable radius on the film 91, wherein the gradually-reduced variable radius is switched from a first force arm R1 to a second force arm R2; step S34: the film 91 is subjected to circular arc traction with the force application pivot point a as the axis, wherein the radius of the circular arc traction is gradually changed to be the second force arm R2 to be switched to the first force arm R1, so that the film tearing path is higher than the boundary of the object, the film is prevented from being reversely stuck to the object, and the film 91 is completely peeled from the object 9.
Step S33 may be further performed between step S32 and step S34, in which a circular arc traction force with a non-fluctuation radius is applied to the film 91 with the force application fulcrum a as the axis, wherein the non-fluctuation radius is the second force arm R2. The interval of the step S33 can be adjusted according to the aspect ratio of the film and the adsorption capacity between the film and the object.
After step S34, step S35 may be continued, and the film 91 separated from the object 9 may be thrown off with the first force arm R1 as a radius while maintaining the urging fulcrum a as the axis. After film throwing, the force application pivot point a is used as an axle center, and the first force arm R1 is used for resetting, so that the next film tearing is continued.
Under the above structure, because the force application pivot point a serving as the axis does not change, the automatic tearing of one film is completed until the next film tearing is completed, and then an arc path is completed.
In practice, the object 9 may be an optical panel, a polarizing plate, a battery substrate or other various flat products with film protection, and the film 91 may be a release film, a Mylar film (Mylar) or a protection film of various flat products. The size of the film 91 may correspond to the size of the object 9, and the film 91 is located on the upper surface of the object 9. The film 91 is set with a film together and a film release. In the present embodiment, the film-lifting position and the film-releasing position are set at the corners of the two ends of the side edge of the film 91, which is closer to the force-applying pivot point a, and are respectively the bottom end 911 and the top end 912, so as to achieve the purpose of picking up (lifting up) and releasing the film with smaller force application. It should be noted that, during the film tearing process, the circular arc traction force generated by the present invention is substantially the force in the circular arc tangential direction to the bottom end 911, and the film tearing force in the circular arc tangential direction is smaller than the force generated by the linear film tearing.
The film tearing process of the automatic film tearing method according to an embodiment of the present invention is sequentially from fig. 3A to fig. 3E. As shown in fig. 3A, the automatic film tearing method of the present invention is to first take the film 91 (film-forming) from the bottom end 911 of the film 91 of the object 9 by the first force arm R1. After the film 91 is drawn, a circular arc traction force with a gradually changing radius is applied to the film 91 in a manner of gradually reducing from the first force arm R1 to the second force arm R2. As shown in fig. 3B, after the first force arm R1 tapers to the second force arm R2, the film is torn continuously with the circular arc traction of the second force arm R2. Next, as shown in fig. 3C and 3D, a circular arc traction force with an increasing radius is applied to the film 91 from the second moment arm R2 to the first moment arm R1. Finally, as shown in fig. 3E, after the second arm R2 is increased to the first arm R1, the film is continuously torn by the circular arc traction of the first arm R1, so as to separate and tear the film 91 from the object 9 at the demolding position.
In practice, the film drawing step may use the force applying pivot point a as an axis, apply a film drawing force to the film starting position (for example, the bottom end 911) of the film 91 by using the first force arm R1, and make the circular arc drawing force perform film starting at the bottom end 911 in a path form approaching to an included angle of +45 degrees, so as to make the film tearing force smaller, and avoid displacement or deformation of the object 9 due to the drawing force. After approaching the second arm R2, the film 91 is subjected to a radius-free circular-arc traction force by the second arm R2 with the force application fulcrum a as the axis. When the bottom end 911 is peeled to about the center of the film 91, corresponding to 1/4 of the circular path, the maximum film tearing force in the whole film tearing process is generated due to the relation of the components. Then, when the circular arc traction force approaches to an included angle of-45 degrees (i.e., an included angle of +135 degrees) at the bottom end 911, the film is torn from the second arm R2 toward the first arm R1 gradually, so that the film tearing path is higher than the boundary of the object or product, and the film 91 is prevented from being reversely stuck back to the object, and the film 91 is peeled from the object 9 completely. Therefore, the automatic film tearing method can tear the film on the surface of the object according to different film tearing stages by the circular arc traction force with variable radius, so as to reduce the film tearing path and the force required during film tearing, further reduce the film tearing time and improve the film tearing efficiency.
The invention provides an automatic film tearing device for realizing and achieving the steps of the automatic film tearing method shown in fig. 1 and 2. Please refer to fig. 1 to 7 together. Fig. 4 is a schematic structural view of an automatic film tearing device 1 according to an embodiment of the present invention. Fig. 5 is a schematic structural view of the automatic film tearing device 1 according to fig. 1 at another view angle.
Fig. 6 is a schematic structural view of the automatic film tearing device 1 according to fig. 1 at another view angle. Fig. 7 is a schematic diagram showing the structure of the film tearing device 124 of the automatic film tearing device 1 according to fig. 1. As shown in fig. 1 to 6, in the present embodiment, the automatic film tearing device 1 includes a carrying platform 11 and a film tearing assembly 12 adjacently disposed on the carrying platform 11. The carrying platform 11 is used for carrying an object 9 with a pre-removed film 91. The film tearing assembly 12 further comprises a rotating shaft 121, a variable diameter rotating arm 122 and a film tearing device 124. The variable diameter rotating arm 122 is disposed above the carrying platform 11, and has one end connected to the rotating shaft 121 and the other end connected to a film tearing device for grabbing the pre-removed film. The variable diameter rotary arm 122 may be formed of a main body 1220 and a telescopic rod 123 connected to an end of the main body 1220, and the film tearing device 124 is connected to or disposed on the telescopic rod 123.
In practice, the carrying platform 11 may be disposed on the bottom plate 10, and the object 9 is disposed on the carrying platform 11. The shape and size of the carrying platform 11 may correspond to the shape and size of the object 9. In the present embodiment, the shape of the carrying platform 11 and the object 9 are rectangular, but the present invention is not limited thereto, and the carrying platform may be designed according to the shape of the object.
In this embodiment, the rotating shaft 121 has an axis 1211 and is disposed on the left side of the carrying platform 11, and the variable-diameter rotating arm 122 is driven by the rotating shaft 121 and rotates along the axis 1211. In practice, the axis 1211 of the rotating shaft 121 may correspond to the force application fulcrum a of fig. 1. The dyestripping assembly 12 may further comprise a motor 120, and the motor 120 is coupled to a shaft 121. Therefore, the motor 120 can drive the rotation shaft 121 to rotate, and the rotation shaft 121 can drive the variable diameter rotation arm 122 to rotate above the carrying platform 11. It should be noted that, in fig. 1, the rotation shaft 121 is located above the variable diameter rotation arm 122, and the motor 120 is located above the rotation shaft 121, but is not limited thereto. In one embodiment, the motor may be disposed on the base plate, the rotating shaft is disposed above the motor, and the variable diameter rotating arm is disposed above the rotating shaft.
In this particular embodiment, the main body 1220 includes a first end 1221 and a second end 1222, and the first end 1221 and the second end 1222 are opposite each other. The telescopic rod 123 is disposed at a first end 1221 of the main body 1220. The distance between the shaft center 1211 of the rotation shaft 121 and the end of the telescopic rod 123 remote from the rotation shaft 121 may form a rotation radius. When the variable diameter rotary arm 122 rotates with the radius of rotation, the end of the telescopic rod 123 generates an arc-shaped movement path, and a part of the arc path passes above the bearing platform 11. In addition, the rotating shaft 121 as a force applying fulcrum drives the variable diameter rotating arm 122 to rotate, and the telescopic rod 123 can also be lengthened or shortened, so that the variable diameter rotating arm 122 rotates with a variable radius, and the end of the telescopic rod 123 generates a variable circular arc path. For example, when the length of the telescoping rod 123 is L, a first force arm R1 is formed, and when the length of the telescoping rod 123 is less than L, a second force arm R2 is formed. In practice, the automatic film tearing device 1 may further include a controller (not shown) for controlling the motor to drive the variable diameter rotating arm 122 to rotate and the telescopic rod 123 to stretch.
In this embodiment, the variable diameter rotating arm 122 of the dyestripping assembly 12 rotates with a first radius of rotation and a second radius of rotation, respectively, wherein the first radius of rotation is greater than the second radius of rotation. In practice, the first radius rotation and the second radius rotation may correspond to the first arm R1 and the second arm R2 of fig. 3A, respectively. When the variable diameter rotary arm 122 rotates with the first radius of rotation and the second radius of rotation, the end of the telescopic rod 123 generates a first arc path P1 and a second arc path P2, respectively, and generates arc traction forces of the first arc path P1 and the second arc path P2. Further, when the variable diameter rotating arm 122 rotates at the first radius of rotation, the first circular arc path has a rotating diameter length that is greater than the length of the film 91 of the object 9.
Further, the tear film assembly 12 includes a weight 125 disposed at a second end 1222 of the main body 1220. In practice, the material, shape and weight of the balancing weight 125 can be designed according to the length of the main body 1220, the position where the rotating shaft 121 is connected to the main body 1220, and the weights of the telescopic rod 123 and the film tearing device 124, so as to balance and maintain the rotatable arm 122 capable of horizontally rotating, and improve the stability and the film tearing efficiency of the film tearing device 124 during film tearing.
As shown in fig. 4, 6 and 7, in the present embodiment, the film tearing device 124 is disposed at the end of the telescopic rod 123, so when the main body 1220 of the variable diameter rotating arm 122 drives the end of the telescopic rod 123 to rotate and generate an arc path, the film tearing device 124 also moves along the arc path. The film tearing device 124 comprises a fixed clamping jaw 1241, a movable clamping jaw 1242 and an air cylinder 1243. The fixed jaw 1241 is disposed opposite the movable jaw 1242, and the movable jaw 1242 is connected to the air cylinder 1243. In practice, when the cylinder 1243 is actuated, the movable jaw 1242 can move toward the fixed jaw 1241 to clamp the fixed jaw 1241 and the movable jaw 1242 together. Further, the height of the film tearing device 124 may correspond to the height of the object 9, and the clamping position when the fixed clamping jaw 1241 and the movable clamping jaw 1242 are clamped may correspond to the position of the film 91 of the object 9. Thus, when the fixed jaw 1241 and the movable jaw 1242 are clamped, the film tearing device 124 can grasp the film 91 of the object 9. The controller of the automatic film tearing device 1 can also control the actuation of the cylinder 1243 of the film tearing device 124.
As shown in fig. 3A, when the automatic film tearing device 1 tears the film 91 of the object 9, the film tearing device 124 is located on the first circular path P1 and tears the film 91 of the object 9 at the film starting position (i.e., the bottom end 911) of the film 91. At this time, the film tearing device 124 generates a film tearing force tangential to the first circular path P1. After the film is peeled, and when an included angle of 45 degrees is formed between the film peeling force and the bottom end 911, the controller controls the telescopic rod 123 to shorten and enables the film peeling device 124 to switch from the first circular arc path P1 to the second circular arc path P2 for film peeling. As shown in fig. 3B, when the film tearing device 124 is switched from the first circular path P1 to the second circular path P2, the film tearing device 124 continuously moves along the second circular path P2. Next, as shown in fig. 3C, when the film tearing device 124 moves along the second circular path P2 and the film tearing force of the film tearing device 124 forms an angle of 135 degrees with the bottom end 911, the controller may control the extension of the telescopic rod 123 and switch the film tearing device 124 from the second circular path P2 to the first circular path P1 for tearing (as shown in fig. 3D). Finally, as shown in fig. 3E, the film tearing device 124 continues to move along the first circular path P1 to tear the film 91 of the object 9. Therefore, the automatic film tearing device can switch different rotation radiuses and arc paths according to different film tearing stages to tear films on objects, so that the film tearing paths are reduced, the force required during film tearing is reduced, the risk of product displacement is reduced, the film tearing time is shortened, and the film tearing efficiency is improved.
Please refer to fig. 3A, fig. 4 and fig. 6. In this embodiment, the automatic film tearing apparatus 1 may further comprise a waste box 13 disposed adjacent to the rotating shaft 121 of the film tearing assembly 12 and opposite to the carrying platform 11. While part of the first circular path P1 passes above the scrap box 13. Further, the first circular path P1 includes a film throwing position, and the film throwing position is located above the scrap box 13. In practice, the waste box 13 may be disposed on the bottom plate 10 and located on the left side of the rotating shaft 121, that is, the waste box 13 and the carrying platform 11 are respectively located on the left and right sides of the rotating shaft 121 of the dyestripping assembly 12. After the film tearing device 124 tears the film 91 on the object 9, the film tearing device 124 may continue to move along the first circular path P1 in the counterclockwise direction to the film throwing position, and then the controller may further control the fixed clamping jaw 1241 and the movable clamping jaw 1242 of the film tearing device 124 to release so that the film tearing device 124 breaks away from the film 91 and the film 91 falls to the waste box 13. Because the variable diameter rotating arm 122 of the automatic film tearing device 1 of the present invention moves circularly, and the carrying platform 11 and the waste box 13 are located on the circular path generated by the circular movement of the variable diameter rotating arm 122, when the variable diameter rotating arm 122 rotates once, the automatic film tearing device 1 can achieve film tearing and film polishing, and the variable diameter rotating arm 122 does not need to reset along the film tearing path and does not need to move to an additional path for film polishing. Therefore, the automatic film tearing device can simultaneously achieve film tearing and film throwing through an arc path, so that the total path is shortened, the arrangement of elements is more compact, and further the film tearing time is shortened and the space is saved. It should be noted that the positions of the waste box and the carrying platform are not limited to being opposite to each other, and in practice, the waste box may be disposed at other positions on the second circular path.
In addition, when the film tearing device 124 tears the film 91 on the object 9 and breaks away from the film 91 at the film throwing position, the film tearing device 124 may continue to move in a counterclockwise direction along the first circular arc path P1. When the automatic film tearing device 1 needs to tear the film on the next object, the film tearing device 124 of the automatic film tearing device 1 can directly move to the film lifting position to grasp the film of the next object for film tearing. Therefore, the film tearing device 124 of the automatic film tearing device 1 of the present invention can sequentially and circularly operate in a first circular arc path, a second circular arc path and a first circular arc path to achieve an automatic film tearing operation.
The film tearing device of the automatic film tearing device of the invention can be in other modes besides the mode of the specific embodiment. Please refer to fig. 6. Fig. 6 is a schematic structural diagram of a film tearing device 224 of the automatic film tearing device according to an embodiment of the present invention. In the present embodiment, as shown in fig. 6, the film tearing device 224 has a suction cup 2441 for sucking the film of the object. In practice, the suction cup 2441 of the film tearing device 224 can be connected with a vacuum device (not shown). When the automatic film tearing device tears the film of the object, the controller can start the vacuum device to enable the film tearing device 224 to adsorb the film of the object at the film lifting position, and control the film tearing device 224 to move along the second circular arc path and the first circular arc path so as to tear the film. Further, after the film tearing device 224 tears the film on the object and moves to the film throwing position along the first circular path, the controller may turn off the vacuum to disengage the film tearing device 224 from the film and drop the film to the waste bin.
Please refer to fig. 7. Fig. 7 is a schematic diagram showing a structure of a film tearing device 324 of the automatic film tearing device according to an embodiment of the invention. In the present embodiment, as shown in fig. 7, the film tearing device 324 is a clamping jaw for clamping the film of the object. In practice, the film tearing device 324 can be a machine clamping jaw or an electric clamping jaw. When the automatic film tearing device tears the film of the object, the controller can control the clamping jaw to clamp the film of the object at the film lifting position, and control the film tearing device 324 to move along the second circular arc path and the first circular arc path so as to tear the film. Further, after the film tearing device 324 tears the film on the object and moves to the film throwing position along the first circular path, the controller may open the clamping jaw to disengage the film tearing device 324 from the film and drop the film to the waste bin.
In summary, the automatic film tearing method and the device thereof can switch different rotation radiuses and arc paths according to different film tearing stages to tear the film on the object, so as to reduce the film tearing path, reduce the force required during film tearing and reduce the risk of product displacement, further reduce the film tearing time and improve the film tearing efficiency. In addition, the automatic film tearing device can also simultaneously achieve film tearing and film throwing through a circular arc path mode, so that the total path is shortened, the arrangement of elements is more compact, the film tearing time is further shortened, and the space is saved.
From the foregoing detailed description of the preferred embodiments, it is intended that the features and spirit of the invention be more clearly described, but that the scope of the invention should not be limited by the description of the preferred embodiments as set forth above. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the invention as defined by the appended claims. The scope of the invention as claimed should therefore be accorded the broadest interpretation based upon the foregoing description so as to encompass all such modifications and equivalent arrangements.
Claims (13)
1. An automatic film tearing method for tearing a film provided on an object surface of an object, characterized in that the automatic film tearing method comprises the following steps:
setting a force application fulcrum, wherein the force application fulcrum is positioned at the outer side of the object;
setting a film together position on the film; and
the film is pulled from the film-lifting position by taking the force-applying pivot as the axis, and an arc traction force with a variable radius is applied to the film to tear the film.
2. The automatic film tearing method of claim 1, wherein the step of taking the film from the film-lifting position and applying the circular-arc traction force to the film to tear the film, using the force-applying fulcrum as an axis, further comprises the steps of:
setting the distance between the force applying pivot and the film lifting position of the film as a first force arm, and setting the distance between the force applying pivot and the film stripping position of the film as a second force arm, wherein the first force arm is larger than the second force arm;
taking the force application pivot as an axis, and applying the circular arc traction force with a gradually-reduced changing radius to the film from the film lifting position, wherein the gradually-reduced changing radius is that the first force arm is switched to the second force arm; and
and taking the force application pivot as an axis, applying the circular arc traction force with an increasing and changing radius to the film so as to tear the film from the demolding position, wherein the increasing and changing radius is that the second force arm is switched to the first force arm.
3. The method of automatically tearing film of claim 2, further comprising the steps of:
before the circular arc traction with the gradually changing radius is applied, the circular arc traction without the changing radius is applied to the film by taking the force application pivot point as the axis, and the circular arc traction with the gradually changing radius is applied by the second force arm.
4. The method of automatically tearing film of claim 2, further comprising the steps of:
the film separated from the object is thrown off by the first force arm by taking the force application pivot as an axis.
5. The method of claim 2, wherein the film-lifting portion and the film-releasing portion are located at two corners of the film adjacent to the side of the force-applying fulcrum.
6. An automatic film tearing device, characterized by comprising:
a carrying platform for carrying an object, the surface of the object is provided with a film which is removed in advance; and
the film tearing assembly is adjacently arranged on the bearing platform and comprises a rotating shaft, a variable-diameter rotating arm and a film tearing device, wherein the rotating shaft is provided with an axle center, the variable-diameter rotating arm is arranged above the bearing platform, one end of the variable-diameter rotating arm is connected with the rotating shaft, the other end of the variable-diameter rotating arm is connected with the film tearing device, and the film tearing device is used for grabbing the pre-removed film at a film combining position of the film;
the variable diameter rotating arm is driven by the rotating shaft and drives the film tearing device to generate an arc traction force with a variable radius so as to tear the film.
7. The automatic film tearing apparatus of claim 6 wherein the variable diameter rotating arm comprises a main body and a telescoping rod connected to a first end of the main body.
8. The automatic film tearing apparatus of claim 7, further comprising a weight disposed at a second end of the body opposite the first end.
9. The automatic film tearing apparatus of claim 6, wherein the variable radius comprises a first radius of rotation and a second radius of rotation, the variable radius rotating arm rotates with the first radius of rotation and the second radius of rotation respectively to generate a first circular path and a second circular path, the first radius of rotation is greater than the second radius of rotation, the film tearing device moves sequentially with the first circular path, the second circular path and the first circular path to tear off the film, and the film lifting position is located on the first circular path.
10. The automatic film tearing apparatus of claim 9, wherein the film tearing device switches from the first circular path to the second circular path when the circular arc traction force at the film lifting position is 45 degrees, and the film tearing device switches from the second circular path to the first circular path when the circular arc traction force at the film lifting position is 135 degrees.
11. The automatic film tearing apparatus of claim 6 wherein the film tearing apparatus has a suction cup for sucking the film.
12. The automatic film tearing apparatus of claim 6 wherein the film tearing apparatus is a clamping jaw for clamping the film.
13. The automatic film tearing apparatus of claim 6, wherein the film tearing device comprises a fixed clamping jaw, a movable clamping jaw and a cylinder, wherein the fixed clamping jaw is arranged opposite to the movable clamping jaw, the movable clamping jaw is connected with the cylinder, and the movable clamping jaw moves towards the fixed clamping jaw according to the actuation of the cylinder to clamp the film.
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| CN202210371423.9A CN116923829B (en) | 2022-04-11 | 2022-04-11 | Automatic film tearing method and device |
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| CN116923829B (en) | 2025-10-31 |
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