PET film tearing structure

Abstract

The utility model relates to a PET film tearing structure which comprises a base, a fixing table is arranged on the upper side of the base, the fixing table is connected with the base in a sliding mode, a stripping plate is arranged on the side edge of the base, a product with a PET film to be torn is placed on the upper side of the fixing table, and when a blue film of the product with the PET film to be torn is placed on the upper side of the fixing table, the stripping plate is separated from the blue film. At least part of the blue film protrudes to the outer side of the stripping plate, and a fixed tearing structure is arranged on the outer side of the stripping plate and used for clamping the side edge of the blue film protruding to the outer side of the stripping plate and pulling and moving the blue film downwards, so that the blue film and the PET film are partially separated at the position of the stripping plate; the blue film protruding out of the stripping plate is fixed through the fixing and tearing structure, the blue film is pulled downwards, the blue film moves downwards along the stripping plate, the PET film with certain stiffness can be separated from the blue film when moving to the position of the stripping plate, then the PET film and the blue film can be torn and separated subsequently, and the PET film tearing process is completed.

Description

A tearable PET film structure Technical Field

[0001] This utility model relates to the field of chip auxiliary production equipment, and in particular to a PET film tearing structure. Background Technology

[0002] In the post-processing of LED chips, the chips need to be sorted into different grades. To sort the chips, the blue film on which the chips are placed must be expanded with an expansion ring before being put into the sorting machine.

[0003] At this point, the chip is placed on the upper side of the blue film, and a PET film or other covering film is also placed on the upper side of the chip to better protect the chip. At this time, the PET film or other covering film has a certain stiffness, while the blue film is relatively soft. The existing film tearing structure cannot easily tear off the PET film or other covering film, or the chip may be affected during the tearing process. Therefore, a special film tearing structure is needed to realize a safe and automated film tearing process. Summary of the Invention

[0004] Therefore, it is necessary to provide a tear-off PET film structure to address the problems in the existing technology.

[0005] A PET film tearing structure is characterized by comprising a base, a fixed platform on the upper side of the base, the fixed platform being slidably connected to the base, a peeling plate on the side of the base, a product with PET film to be peeled being placed on the upper side of the fixed platform, and at least a portion of the blue film of the product being peeled protruding to the outer side of the peeling plate when placed on the upper side of the fixed platform, and a fixed tearing structure being provided on the outer side of the peeling plate for clamping the side of the blue film protruding to the outer side of the peeling plate and pulling the blue film downward, so that the blue film and the PET film are partially separated at the peeling plate position.

[0006] In one embodiment, the PET film tearing structure further includes a tearing structure, comprising a moving structure and tearing claws. The moving structure controls the lateral and vertical moving structures of the tearing claws. The tearing claws clamp the PET film separated from the blue film, and the moving structure tears the PET film apart from the blue film.

[0007] In one embodiment, the fixing platform is provided with a fixing structure for fixing the product. The fixing structure includes a fixing suction cup. The fixing platform is provided with a through hole extending from top to bottom, and the fixing suction cup is located in the through hole.

[0008] In one embodiment, a fixing plate is also provided on the upper side of the fixing platform, and a fixing cylinder is provided on the side of the fixing plate. The fixing cylinder is connected to the fixing plate through a piston rod and is used to control the up and down movement of the fixing plate. The fixing plate presses the blue film tightly on the upper side of the fixing platform.

[0009] In one embodiment, a reset structure is provided between the fixed platform and the base. When the fixed tearing structure pulls the blue film, the fixed platform and the blue film move synchronously, and relative movement occurs between the fixed platform and the base. When the fixed tearing structure removes the force acting on the blue film, the fixed platform returns to its initial position under the action of the reset structure.

[0010] In one embodiment, the reset structure includes a guide rod fixed to a fixed platform or base, the base or fixed platform being provided with a limiting ring, the guide rod passing through the limiting ring, and a reset spring sleeved on the outer side of the guide rod, the reset spring being compressed when the fixed platform moves toward the peeling platform of the base.

[0011] In one embodiment, a fixed platform is connected to one side of the base via a guide rail slider structure. The fixed platform has a notch on the side near the peeling table and a moving groove adapted to the width of the peeling table. When the fixed platform moves along the guide rail slider direction with the base, the moving groove of the fixed platform moves to the position of the peeling table.

[0012] In one embodiment, the fixed tearing structure includes a vertical cylinder, the moving end of which is provided with a clamping cylinder, and the moving end of which is provided with a fixed gripper, the fixed gripper being located on the outer side of the peeling plate.

[0013] In one embodiment, the outer side of the peeling plate is provided with an inclined side, the inclined surface of the inclined side faces downward, and the fixed tearing structure is located outside the inclined side.

[0014] In one embodiment, the PET film is rectangular, with its right angle facing the peeling plate. When the PET film and the blue film move towards the peeling plate simultaneously, the right angle of the PET film separates from the blue film at the inclined side of the peeling plate.

[0015] The aforementioned PET film tearing structure involves placing and fixing the blue film to be torn on a fixed platform. At this point, at least a portion of the bottom mold is exposed at the peeling plate position. The blue film protruding from the peeling plate position is then fixed by the fixed tearing structure, and the blue film is pulled downwards, causing the fixed platform to move on the upper side of the base. As the platform moves on the upper side of the base, the blue film moves downwards along the peeling plate, and the PET film, which has a certain degree of stiffness, separates from the blue film when it reaches the peeling plate position. Subsequently, the PET film and the blue film can be torn apart, completing the PET film tearing process. During the tearing process, the film will not come into contact with the chip on the upper side of the blue film, thus better protecting the product. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of the PET film tearing structure of this utility model;

[0017] Figure 2 is a schematic diagram of the product placement structure of the PET film tearing structure of this utility model;

[0018] Figure 3 is a side view schematic diagram of the PET film tearing structure of this utility model;

[0019] Figure 4 is a schematic diagram of the bottom structure of the PET film tearing structure of this utility model;

[0020] The components include: 1. base; 2. fixed platform; 21. moving groove; 3. peeling plate; 31. inclined side; 4. fixed tearing structure; 5. fixed structure; 51. fixed suction cup; 52. fixed pressure plate; 53. fixed cylinder; 6. reset structure; 61. guide rod; 62. reset spring. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] As shown in Figures 1 to 4, a PET film tearing structure is characterized by comprising a base 1, a fixing platform 2 on the upper side of the base 1, the fixing platform 2 being slidably connected to the base 1, and a peeling plate 3 on the side of the base 1. A product with a PET film to be torn is placed on the fixing platform 2. When the blue film of the product with a PET film to be torn is placed on the fixing platform 2, at least a portion of the blue film protrudes to the outer side of the peeling plate 3. A fixing tearing structure 4 is provided on the outer side of the peeling plate 3 to fix the blue film protruding to the outer side of the peeling plate 3 and pull the blue film downwards, so that the blue film and the PET film are partially separated at the peeling plate 3.

[0025] The blue film for tearing PET film is placed on the fixing platform 2 and fixed. At this time, at least part of the bottom mold is exposed at the peeling plate 3. Then, the blue film protruding from the peeling plate 3 is fixed by the fixing tearing structure 4 and the blue film is pulled down, so that the fixing platform 2 moves on the upper side of the base 1. When it moves on the upper side of the base 1, since the blue film moves down along the peeling plate 3, the PET film with a certain stiffness will separate from the blue film when it moves to the position of the peeling plate 3. Then, the PET film and the blue film can be torn apart to complete the PET film removal process.

[0026] When partially separating the PET film from the blue film, the PET film needs to be torn off from the top of the blue film. Therefore, in this embodiment, the PET film tearing structure also includes a tearing structure, including a moving structure and tearing claws. The moving structure is used to control the lateral and vertical moving structures of the tearing claws. The tearing claws are used to clamp the PET film separated from the blue film, and the moving structure tears the PET film and the blue film apart. Under the action of the horizontal and vertical moving structures, the tearing gripper moves to the outside of the PET film and clamps the PET film at the position where it is separated from the blue film. Then, the movement of the tearing gripper is controlled by the horizontal and vertical moving structures to tear the PET film from the top of the blue film, thus completing the automatic tearing process of the PET film. At this time, the horizontal moving structure is a horizontally arranged horizontal module, and the vertical moving structure is a vertically arranged first cylinder. A vertical moving plate connected to the piston rod of the cylinder is provided on the side plate of the first cylinder. A second cylinder is provided on the side of the vertical moving plate. The piston rod of the second cylinder is equipped with a clamping block. The clamping block moves up and down to form a gripper structure with the vertical moving plate, thereby clamping the PET film. After clamping, the movement of the gripper structure is controlled by the horizontal module and the first cylinder to tear the PET film from the top of the blue film.

[0027] At this point, after placing the blue film on the fixing platform 2, it needs to be fixed to the upper side of the fixing platform 2. This way, when the blue film is pulled from the outside of the peeling plate 3, the entire blue film located on the upper side of the fixing platform 2 will move with the fixing platform 2. Therefore, in this embodiment, the fixing platform 2 is provided with a fixing structure 5 for fixing the product. The fixing structure 5 includes a fixing suction cup 51. The fixing platform 2 has a through hole running vertically, and the fixing suction cup 51 is located inside the through hole. That is, a fixing suction cup 51 is set on the fixing platform 2. In this case, the fixing suction cup 51 is a vacuum suction cup, and the fixing suction cup 51 is not higher than the upper surface of the fixing platform 2. Thus, after the blue film is placed on the fixing platform 2, the lower side of the blue film completely adheres to the upper surface of the fixing platform 2, and is then fixed to the upper side of the fixing platform 2 under the action of the fixing suction cup 51.

[0028] Furthermore, since the blue film needs to be clamped and pulled downwards during the film peeling process, and the fixed platform 2 and the PET film need to move synchronously towards the peeling plate 3, and the blue film is needed for subsequent film expansion, it is necessary to make the blue film move synchronously with the fixed platform 2 as much as possible, and the blue film should deform less during the pulling process. Therefore, in this embodiment, a fixed pressure plate 52 is also provided on the upper side of the fixed platform 2, and a fixed cylinder 53 is provided on the side of the fixed pressure plate 52. The fixed cylinder 53 is connected to the fixed pressure plate 52 through a piston rod, and is used to control the up and down movement of the fixed pressure plate 52. The fixed pressure plate 52 presses the blue film tightly on the upper side of the fixed platform 2. Two fixing plates 52 are provided, located on both sides of the peeling plate 3. Under the action of the fixing cylinder 53, they can be pressed against the upper side of the fixing plate, thereby pressing the blue film on the upper side of the fixing plate. This ensures that the fixing plate and the blue film move together when the blue film is pulled. At the same time, the fixing plates are located on both sides of the peeling plate 3, and when the blue film is placed on the fixing plates, part of the PET is located between the fixing plate and the peeling plate 3. That is, most of the PET is located on the back side of the fixing plate, and only the part that is torn first is located between the fixing plate and the peeling plate 3. In this way, when the blue film is pulled, the PET and most of the blue film will not deform, thus ensuring that the position of the chip on the upper side of the blue film does not change. At the same time, when the blue film is pulled, the blue film moves downward, allowing the PET film between the fixing plate and the peeling plate 3 to move quickly to the position of the peeling plate 3 and separate from the blue film, thereby improving the film tearing efficiency. At the same time, it can be ensured that the position of the chip on the upper side of the blue film does not change during the film tearing process.

[0029] During the film-tearing process, the fixed platform 2 and the base 1 will move relative to each other. In order to ensure continuous and automated production, after the film is to be torn, the fixed platform 2 and the base 1 need to be restored to their initial position. Specifically, a reset structure 6 is provided between the fixed platform 2 and the base 1. When the fixed tearing structure 4 pulls the blue film, the fixed platform 2 and the blue film move synchronously, and the fixed platform 2 and the base 1 move relative to each other. When the fixed tearing structure 4 removes the force acting on the blue film, the fixed platform 2 returns to its initial position under the action of the reset structure 6.

[0030] Specifically, the reset structure 6 includes a guide rod 61 fixed to the fixed platform 2 or the base 1. The base 1 or the fixed platform 2 is provided with a limiting ring, and the guide rod 61 passes through the limiting ring. A reset spring 62 is sleeved on the outside of the guide rod 61. When the fixed platform 2 moves toward the peeling platform of the base 1, the reset spring 62 is compressed. In this embodiment, the guide rod 61 is fixed to the base 1. A limiting ring is provided on the lower side of the fixed platform 2 and sleeved on the outside of the guide rod 61. The reset spring 62 is sleeved on the outside of the guide rod 61 and is located between the base 1 and the limiting ring. When the fixed tearing structure 4 pulls the blue film downward, relative movement occurs between the fixed platform 2 and the base 1. The fixed platform 2 moves toward the peeling plate 3, and the reset spring 62 is compressed. When the fixed tearing structure 4 releases the pull on the blue film, under the action of the reset spring 62, the fixed platform 2 moves away from the peeling plate 3, thereby restoring the fixed plate and the base 1 to their initial positions.

[0031] In order to reduce the overall volume when relative movement occurs between the fixed platform 2 and the base 1, in this embodiment, the fixed platform 2 is connected to one side of the base 1 via a guide rail slider structure. The fixed platform 2 has a notch on the side near the peeling table, and the fixed platform 2 has a moving groove 21 adapted to the width of the peeling table. When the fixed platform 2 moves with the base 1 along the direction of the guide rail slider, the moving groove 21 of the fixed platform 2 moves to the position of the peeling table. At this time, the base 1 has a long strip structure design and is staggered with the fixed platform 2. When relative movement occurs between the fixed platform 2 and the base 1, due to the moving groove 21, the position of the moving groove 21 of the fixed platform 2 can move to coincide with the peeling table when the fixed platform 2 moves towards the peeling table of the base 1. This allows the blue film on the upper side of the fixed platform 2 to move to the position of the peeling table, thereby allowing the PET film to move to the position of the peeling table.

[0032] The fixed tearing structure 4 first fixes the blue film and then pulls it downward. In this embodiment, the fixed tearing structure 4 includes a vertical cylinder, the moving end of which is provided with a clamping cylinder, and the moving end of which is provided with a fixed gripper. The fixed gripper is located on the outside of the peeling plate 3. The clamping cylinder is a finger cylinder, and the fixing claw is a clamping part set at the moving end of the finger cylinder. After the blue film is fixed by the fixing claw, the clamping cylinder is controlled by the vertical cylinder to move downward, thereby causing the fixing claw to move downward. This causes the fixed blue film to move downward as well. Since the fixing claw fixes the blue film, it will pull the blue film downward, causing it to move downward on the side of the peeling plate 3. During the downward pulling of the blue film, the fixing plate will be pulled towards the peeling plate 3, causing the PET film on the upper side of the blue film to also move towards the peeling plate 3. When it moves to the side of the peeling plate 3, the lower blue film continues to move downward, while the PET film, due to its certain stiffness, will not move downward with the blue film, but will continue to move forward, thus separating the PET film from the blue film.

[0033] In order to increase the probability of separation between the blue film and the PET film at the peeling plate 3, in this embodiment, the outer side of the peeling plate 3 is provided with an inclined side 31, the inclined surface of which faces downward, and the fixed tearing structure 4 is located outside the inclined side 31. The inclined side 31 is not completely downward, but rather inclined downward, so that when the blue film and the PET film move to the inclined side 31, they are more easily separated.

[0034] Furthermore, to increase the probability of separation between the blue film and the PET film at the peeling plate 3, in this embodiment, the PET film is rectangular, with its right angle facing the peeling plate 3. When the PET film and the blue film move simultaneously toward the peeling plate 3, the right angle of the PET film separates from the blue film at the inclined side 31 of the peeling plate 3. Thus, as the PET film moves to the peeling plate 3, the area it extends onto the peeling plate 3 gradually increases. Consequently, when the PET film and the blue film separate, the separation surface also increases from small to large. This ensures that when the PET film moves to the peeling plate 3, it will inevitably separate from the blue film. The shape of the blue film at this point is not limited and can be set according to actual needs.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A tear PET film structure, characterized by, The device includes a base, with a fixed platform on the upper side of the base. The fixed platform is slidably connected to the base. A peeling plate is provided on the side of the base. A product with a PET film to be peeled is placed on the upper side of the fixed platform. When the blue film of the product with the PET film to be peeled is placed on the upper side of the fixed platform, at least a portion of the blue film protrudes to the outside of the peeling plate. A fixed tearing structure is provided on the outside of the peeling plate to clamp the side of the blue film protruding to the outside of the peeling plate and pull the blue film downward, so that the blue film and the PET film are partially separated at the peeling plate position.

2. The tear-off PET film structure according to claim 1, characterized in that, The PET film tearing structure also includes a tearing structure, comprising a moving structure and tearing claws. The moving structure controls the lateral and vertical movement of the tearing claws. The tearing claws clamp the PET film separated from the blue film, and the moving structure tears the PET film apart from the blue film.

3. The tear PET film structure of claim 2, wherein, The fixing platform is provided with a fixing structure for fixing the product. The fixing structure includes a fixing suction cup. The fixing platform has a through hole running vertically through it, and the fixing suction cup is located inside the through hole.

4. The tear PET film structure according to any one of claims 1 to 3, wherein, A fixing plate is also provided on the upper side of the fixing platform. A fixing cylinder is provided on the side of the fixing plate. The fixing cylinder is connected to the fixing plate through a piston rod and is used to control the up and down movement of the fixing plate. The fixing plate presses the blue film tightly on the upper side of the fixing platform.

5. The tear PET film structure of claim 4, wherein, A reset structure is provided between the fixed platform and the base. When the fixed tearing structure pulls the blue film, the fixed platform and the blue film move synchronously, and relative movement occurs between the fixed platform and the base. When the fixed tearing structure removes the force acting on the blue film, the fixed platform returns to its initial position under the action of the reset structure.

6. The tear-off PET film structure according to claim 5, characterized in that, The reset structure includes a guide rod fixed to a fixed platform or base. The base or fixed platform is provided with a limiting ring. The guide rod passes through the limiting ring. A reset spring is sleeved on the outside of the guide rod. When the fixed platform moves toward the peeling platform of the base, the reset spring is compressed.

7. The tear PET film structure of claim 5, wherein, A fixed platform is connected to one side of the base via a guide rail slider structure. The fixed platform has a notch on the side near the peeling table and a moving groove adapted to the width of the peeling table. When the fixed platform moves along the guide rail slider direction with the base, the moving groove of the fixed platform moves to the position of the peeling table.

8. The tear PET film structure of claim 5, wherein, The fixed tearing structure includes a vertical cylinder, the moving end of which is equipped with a clamping cylinder, and the moving end of which is equipped with a fixed gripper, which is located on the outside of the peeling plate.

9. The tear PET film structure of claim 5, wherein, The outer side of the peeling plate is provided with an inclined side, the inclined surface of the inclined side faces downward, and the fixed tearing structure is located outside the inclined side.

10. The tear PET film structure of claim 9, wherein, The PET film is rectangular, with its right angle facing the peeling plate. When the PET film and the blue film move towards the peeling plate simultaneously, the right angle of the PET film separates from the blue film at the inclined side of the peeling plate.

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