Cutting equipment for packaging film of display panel

Abstract

The utility model discloses cutting equipment for a packaging film of a display panel, which is used for cutting the packaging film in transportation, the cutting equipment comprises a bearing table, a cutting knife and a first driving piece, the bearing table is provided with a bearing surface for bearing the packaging film, the cutting knife is arranged above the bearing surface, and the first driving piece is arranged on the bearing surface. The cutting end of the cutting knife is provided with a first face and two second faces, the two second faces are connected to the edges of the two opposite sides of the first face respectively in the conveying direction of the packaging film, cutting sharp corner parts are formed at the connecting positions of the second faces and the first face, the cutting sharp corner parts have sharp corner angles theta, and theta is smaller than 90 degrees. The first driving piece can comprise but not limited to a linear motor and an air cylinder, is connected to the cutting knife and can drive the cutting knife to be close to or away from the bearing face in the direction perpendicular to the bearing face. According to the cutting equipment, the possibility that bubbles are generated at the edge of the cut packaging film can be reduced, so that the probability that the sealing performance at the edge of the packaging film is reduced is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of display panel manufacturing equipment, in particular to a cutting device for a packaging film of a display panel. Background Art

[0002] During the display panel manufacturing process, an encapsulation film is attached to the surface of the electroluminescent layer to prevent it from being exposed to moisture, oxygen, and other factors, which could cause rapid aging. When delivered to the factory, this encapsulation film is a continuous, long roll of film, consisting of a stacked metal film layer, an adhesive film layer, and a release film layer. Cutting equipment is required to cut the encapsulation film into appropriate sizes before attaching it to the surface of the electroluminescent layer.

[0003] like Figure 1 As shown, specifically, the cutting device 100' usually includes a carrier platform 1' and a cutting knife 2', the carrier platform 1' has a carrier surface 11' for carrying the packaging film 200', the cutting knife 2' can be raised and lowered above the carrier surface 11', the cutting knife 2' head usually includes a first surface 21' and a second surface 22' at an angle, the connection between the first surface 21' and the second surface 22' forms a knife tip, so that when the cutting knife 2' descends, the knife tip is used to cut the packaging film 200' on the carrier surface 11', and the packaging film 200' usually contacts the carrier surface 11' with the metal film layer 7'.

[0004] When the cutting blade 2' cuts the packaging film 200', the first surface 21' and the second surface 22' contact the adhesive layer 8' of the packaging film 200', causing some of the adhesive material to adhere to the first surface 21' and the second surface 22'. Consequently, when the cutting blade 2' is lifted, the edge of the release film layer 9' becomes stuck to the adhesive material on the first surface 21' and the second surface 22', causing it to be lifted upward by the cutting blade 2', and even causing the edge of the release film layer 9' to separate from the adhesive layer 8'. As the cutting blade 2' continues to lift and separate from the release film layer 9', the edge of the release film layer 9' falls back downward and reconnects with the adhesive layer 8'. However, this can easily lead to bubbles 200a' being sealed between the edge of the release film layer 9' and the adhesive layer 8'.

[0005] When the cut packaging films 200' are stacked, if there are bubbles 200a' between the release film layer 9' and the adhesive film layer 8' of the packaging film 200', the local thickness of the packaging film 200' in this part will be larger. Under the action of gravity exerted by other packaging films 200' stacked above the packaging film 200', the bubbles 200a' will be squeezed, which in turn causes the bubbles 200a' to squeeze the adhesive film layer 8', and ultimately causes the local thickness of the adhesive film layer 8' to become thinner, the local sealing performance of the packaging film 200' to decrease, and the service life of the display panel using the packaging film 200' to be shortened. Utility Model Content

[0006] The purpose of the present invention is to provide a device for cutting a packaging film of a display panel, which can reduce the possibility of bubbles being generated at the edge of the packaging film after being cut, thereby reducing the probability of reduced sealing performance at the edge of the packaging film.

[0007] To achieve this purpose, the present invention adopts the following technical solutions:

[0008] A device for cutting a packaging film of a display panel is provided, which is used to cut the packaging film in transit, and the cutting device includes:

[0009] A carrying platform, the carrying platform having a carrying surface for carrying the packaging film;

[0010] a cutting blade, the cutting blade being disposed above the carrying surface, the cutting end of the cutting blade having a first surface and two second surfaces, the two second surfaces being respectively connected to edges of two opposite sides of the first surface along the conveying direction of the packaging film, the two second surfaces being close to each other on a side away from the first surface, the connection between the second surface and the first surface forming a cutting sharp corner portion, the cutting sharp corner portion having a sharp angle θ, θ<90°; and,

[0011] A first driving member is connected to the cutting blade, and the first driving member can drive the cutting blade to approach or move away from the carrying surface along a direction perpendicular to the carrying surface.

[0012] As a preferred solution of the cutting device for the packaging film of the display panel, the first surface is a plane, and the first surface is parallel to the carrying surface.

[0013] As a preferred solution of the cutting device for the packaging film of the display panel, the middle portion of the first surface is recessed in a direction away from the supporting platform.

[0014] As a preferred solution of the cutting device for the packaging film of the display panel, at least part of the first surface is an inclined surface, or at least part of the first surface is a curved surface.

[0015] As a preferred solution of the cutting device for the packaging film of the display panel, the cutting device further includes a scrap material removal device, the scrap material removal device including a device base, a second driving member, a third driving member, a material receiving structure and a material lifting member, the device base is fixed to one side of the cutting blade along the conveying direction and is located on the side facing the supporting surface;

[0016] The second driving member is connected between the device base and the material receiving structure, and the second driving member can drive the material receiving structure to reciprocate relative to the device base along the conveying direction;

[0017] The lifting member is located on the side of the material receiving structure away from the supporting platform, and the third driving member is connected between the device seat and the lifting member. The third driving member can drive the lifting member to move relative to the device seat along the length direction of the cutting knife, and the lifting member can abut against the first surface, and the lifting end of the lifting member can abut against the packaging film scrap connected to the first surface.

[0018] As a preferred solution of the device for cutting the packaging film of the display panel, the ejecting member has a guide surface capable of abutting against the first surface, the guide surface is connected to the end surface of the ejecting end, and the portion of the guide surface closer to the end surface of the ejecting end is closer to the supporting platform;

[0019] The scrap material removal device also includes a sliding seat and an elastic member. The sliding seat can be slidably connected to the device seat in a direction perpendicular to the bearing surface. The elastic member is connected between the sliding seat and the device seat. The elastic member can apply elastic force to the sliding seat and the device seat so that the sliding seat and the device seat always have a tendency to move closer to each other. The third driving member is connected between the sliding seat and the lifting member.

[0020] As a preferred solution for the cutting equipment of the packaging film of the display panel, the scrap removal device also includes a screw, the output end of the third driving member is transmission-connected to the screw, the third driving member can drive the screw to rotate around the central axis of the screw itself, the lifting member can be slidably connected to the device seat along the length direction of the cutting knife, and the lifting member can be slidably fitted into the screw groove of the screw.

[0021] As a preferred solution of the cutting device for the packaging film of the display panel, the cutting device further includes a pressing roller, which can press the cut edge of the packaging film.

[0022] As a preferred solution of the cutting device for the packaging film of the display panel, the pressing roller includes a first pressing roller, which is arranged to be raised and lowered on the side facing the carrying surface; and / or,

[0023] The pressing roller includes a second pressing roller, which is movable along the conveying direction and is arranged on the side facing the carrying surface. The moving speed of the second pressing roller along the conveying direction is greater than the moving speed of the packaging film along the conveying direction.

[0024] As a preferred solution for the cutting equipment of the packaging film of the display panel, the packaging film includes a metal film layer, an adhesive film layer and a release film layer stacked in sequence, and the packaging film is placed on the supporting platform with the release film layer facing downward and directly contacting the supporting surface.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] The present invention provides a device for cutting the packaging film of a display panel. By making the two second surfaces of the cutting end of the cutting knife close to each other on the side away from the first surface, on the one hand, two cutting sharp corners with sharp angles less than 90° can be formed at the connection between the two second surfaces and the first surface respectively, so as to be able to cut the packaging film. On the other hand, the contact area between the two second surfaces and the packaging film can be reduced during the cutting process of the cutting knife, thereby reducing the possibility of the adhesive film adhering to the second surface, and further reducing the possibility of the adhesive film material on the second surface of the edge of the release film sticking and being driven upward by the cutting knife to be separated from the adhesive film layer during the process of lifting the cutting knife upward. The possibility of bubbles being generated at the edge of the packaging film after cutting can be reduced, thereby reducing the probability of the problem of reduced sealing performance at the edge of the packaging film. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of the cutting equipment and the transported packaging film provided by the prior art.

[0028] Figure 2 This is a schematic structural diagram of the cutting equipment and the packaging film being transported according to an embodiment of the present invention.

[0029] Figure 3 for Figure 2 Enlarged schematic diagram of point M in the middle.

[0030] Figure 4 This is a schematic diagram of the partial structure of a cutting knife according to an embodiment of the present utility model.

[0031] Figure 5 This is a schematic diagram of the partial structure of a cutting knife according to another embodiment of the present invention.

[0032] Figure 6 This is a partial structural diagram of a cutting knife according to another embodiment of the present invention.

[0033] Figure 7This is a schematic diagram of the partial structure of the cutting knife and scrap removal device according to an embodiment of the present invention.

[0034] Figure 8 This is a schematic structural perspective view of a top material component according to an embodiment of the present invention.

[0035] Figure 9 It is a schematic cross-sectional view of a local structure of a display panel according to an embodiment of the present invention.

[0036] Figure 1 middle:

[0037] 100', cutting equipment; 1', carrying platform; 11', carrying surface; 2', cutting blade; 21', first surface; 22', second surface; 200', packaging film; 7', metal film layer; 8', adhesive film layer; 9', release film layer; 200a', air bubble.

[0038] Figures 2 to 9 middle:

[0039] 100. Cutting equipment; 1. Carrying platform; 11. Carrying surface; 2. Cutting knife; 21. First surface; 22. Second surface; 23. Cutting corner; 3. First driving member; 4. Scrap removal device; 41. Device seat; 42. Second driving member; 43. Third driving member; 44. Material receiving structure; 45. Material ejector; 450. Material ejector end; 451. Guide surface; 46. Sliding seat; 47. Elastic member; 48. Screw; 5. First pressing roller; 6. Second pressing roller; 200. Packaging film; 7. Metal film layer; 8. Adhesive film layer; 9. Release film layer; 300. Electroluminescent layer; 400. Circuit layer. DETAILED DESCRIPTION

[0040] The advantages and features of the present invention and methods for achieving them will become apparent with reference to the embodiments described in detail below in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in a variety of different forms. These embodiments are provided merely to complete the disclosure of the present invention and enable those skilled in the art to fully understand the scope of the present invention. The present invention is limited only by the scope of the claims. The same reference numerals represent the same components throughout the specification.

[0041] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[0042] like Figure 2 and Figure 3As shown, a cutting device 100 for a packaging film 200 of a display panel is provided, which is used to cut the packaging film 200 being transported. Specifically, the cutting device 100 includes a carrier 1, a cutting blade 2, and a first driving member 3. The carrier 1 has a carrying surface 11 for carrying the packaging film 200. The cutting blade 2 is arranged above the carrying surface 11. The cutting end of the cutting blade 2 has a first surface 21 and two second surfaces 22. Along the transport direction S of the packaging film 200, the two second surfaces 22 are respectively connected to the edges of the two opposite sides of the first surface 21. The connection between the second surface 22 and the first surface 21 forms a cutting corner 23. The cutting corner 23 has a sharp angle θ, θ<90°. The first driving member 3 may include but is not limited to a linear motor and a cylinder. The first driving member 3 is connected to the cutting blade 2 and can drive the cutting blade 2 to move closer to or away from the carrying surface 11 in a direction perpendicular to the carrying surface 11.

[0043] By making the two second surfaces 22 of the cutting end of the cutting blade 2 close to each other on the side away from the first surface 21, on the one hand, two cutting sharp corners 23 with sharp angles less than 90° can be formed at the connection between the two second surfaces 22 and the first surface 21, so as to be able to cut the packaging film 200. On the other hand, the contact area between the two second surfaces 22 and the packaging film 200 can be reduced during the cutting process of the cutting blade 2, thereby reducing the possibility of the adhesive film adhering to the second surface 22, and further reducing the possibility of the adhesive film material on the edge of the second surface 22 of the release film sticking during the upward lifting process of the cutting blade 2, and then being driven upward by the cutting blade 2 and separated from the adhesive film layer 8. The possibility of bubbles being generated at the edge of the packaging film 200 after cutting can be reduced, thereby reducing the probability of the problem of reduced sealing performance at the edge of the packaging film 200.

[0044] In general, the carrying surface 11 is perpendicular to the direction of gravity and faces upward in the direction of gravity, so that the carrying surface 11 can support the packaging film 200 from the bottom of the packaging film 200 along the direction of gravity. Figure 2 and Figure 3 As shown, Figure 2 and Figure 3 In FIG, the up and down directions in the direction of gravity are shown by arrows, and the conveying direction S is shown by arrows.

[0045] The cutting blade 2 can be of various structural shapes. Next, several cutting blades 2 with different structures will be described with reference to the accompanying drawings.

[0046] like Figure 3 As shown, in an optional embodiment, the first surface 21 is a plane, and the first surface 21 is parallel to the bearing surface 11, so that the structure of the cutting knife 2 is simple and easy to manufacture.

[0047] like Figure 4 As shown, in another optional embodiment, the middle portion of the first surface 21 is recessed in a direction away from the supporting platform 1 , so that the cutting corner portion 23 can be tilted toward the supporting surface 11 to further improve the cutting performance of the cutting blade 2 .

[0048] Optionally, the first surface 21 is at least partially an inclined surface, or the first surface 21 is at least partially a curved surface, so that the portion of the first surface 21 connected to the second surface 22 can be tilted in a direction away from the carrier 1, so that the middle portion of the first surface 21 is concave in a direction away from the carrier 1. Figures 4 to 6 As shown, Figure 4 It is shown in FIG that the first surface 21 is a curved surface. Figure 5 It is shown in FIG that the first surface 21 is composed of two inclined surfaces. Figure 6 FIG. 2 shows that the first surface 21 is composed of a curved surface and two inclined surfaces connected to two opposite sides of the curved surface.

[0049] In this embodiment, after the packaging film 200 is cut with the cutting knife 2, the packaging film scraps between the two cutting sharp corners 23 may be stuck in the middle recess of the first surface 21. In this case, please combine Figure 7 As shown, optionally, the cutting equipment 100 also includes a scrap material removal device 4, which includes a device seat 41, a second driving member 42, a third driving member 43, a material receiving structure 44 and a material lifting member 45. The device seat 41 is fixed to one side of the cutting knife 2 along the conveying direction S, and is located on the side facing the supporting surface 11. The second driving member 42 is connected between the device seat 41 and the material receiving structure 44. The second driving member 42 can drive the material receiving structure 44 to reciprocate relative to the device seat 41 along the conveying direction S. The material lifting member 45 is located on the side of the material receiving structure 44 away from the supporting platform 1. The third driving member 43 is connected between the device seat 41 and the material lifting member 45. The third driving member 43 can drive the material lifting member 45 to move relative to the device seat 41 along the length direction of the cutting knife 2, and the material lifting member 45 can abut against the first surface 21. The material lifting end 450 of the material lifting member 45 can abut against the packaging film scrap connected to the first surface 21, wherein the length direction of the cutting knife 2 is perpendicular to Figure 7 The direction of the paper.

[0050] After the cutting blade 2 is lifted up after finishing cutting, it can be lifted to the upper side of the material receiving structure 44 along the gravity direction, and then the second driving member 42 drives the material receiving structure 44 to move along the conveying direction S to the position directly below the first surface 21, so that the scrap material connected to the first surface 21 is moved along the Figure 7 When the scraps fall in the up and down directions, the scraps can be caught by the material receiving structure 44 to prevent the scraps from falling onto the packaging film 200 on the supporting platform 1 below the material receiving structure 44. Then the third driving member 43 drives the lifting member 45 along the length direction of the cutting blade 2 (i.e., perpendicular to the Figure 7 The lifting member 45 moves from one side of the cutting blade 2 along its own length direction to abut against the first surface 21, and abuts against the scrap connected to the first surface 21, and then pushes the scrap to one side of the cutting blade 2 along its own length direction to collect the scrap to a position where it does not affect the packaging film 200 being conveyed.

[0051] When the lifting member 45 completes the lifting, the third driving member 43 can drive the lifting member 45 to move in the reverse direction to return to a position spaced apart from the cutting knife 2 along the length direction of the cutting knife 2, and the second driving member 42 can drive the material receiving structure 44 to move in the reverse direction to return to a position spaced apart from the cutting knife 2 along the conveying direction.

[0052] Optionally, the second driving member 42 may include but is not limited to a linear motor and a cylinder, so as to drive the material receiving structure 44 to move back and forth along the conveying direction S.

[0053] Optionally, the splicing structure 44 may be in the form of a long thin sheet to have a larger effective splicing area.

[0054] In actual situations, it is difficult for the lifting height of the cutting knife 2 to be exactly the same each time. In order to avoid the interference between the lifting member 45 and the cutting knife 2 when the lifting height of the cutting knife 2 is not high enough, please combine the lifting member 45 with the cutting knife 2 to prevent the lifting member 45 from interfering with the cutting knife 2 during the process of moving from one side of the cutting knife 2 along its own length direction toward the cutting knife 2. Figure 8 As shown, optionally, the ejecting member 45 has a guide surface 451 that can abut against the first surface 21, the guide surface 451 is connected to the end surface of the ejecting end 450, and the closer the guide surface 451 is to the end surface of the ejecting end 450, the closer it is to the supporting platform 1, the scrap material removal device 4 also includes a sliding seat 46 and an elastic member 47, the sliding seat 46 can be slidably connected to the device seat 41 in a direction perpendicular to the supporting surface 11, the elastic member 47 is connected between the sliding seat 46 and the device seat 41, the elastic member 47 can apply elastic force to the sliding seat 46 and the device seat 41, so that the sliding seat 46 and the device seat 41 always have a tendency to move closer to each other, and the third driving member 43 is connected between the sliding seat 46 and the ejecting member 45.

[0055] Thus, when the lifting height of the cutting blade 2 is not high enough, when the lifting member 45 moves from one side of the cutting blade 2 along its own length direction toward the cutting blade 2, the guide surface 451 can abut against the first surface 21 to guide the lifting member 45 to enter under the first surface 21. At this time, the elastic member 47 is stretched, and the sliding seat 46 slides relative to the device seat 41 toward the supporting platform 1. After the lifting member 45 completes the lifting, the third driving member 43 drives the lifting member 45 to move in the opposite direction to return to a position spaced apart from the cutting blade 2 along the length direction of the cutting blade 2. At this time, the sliding seat 46 can slide back relative to the device seat 41 under the elastic force of the elastic member 47.

[0056] Optionally, the scrap removal device 4 also includes a screw 48, and the output end of the third driving member 43 is transmission-connected to the screw 48. The third driving member 43 can drive the screw 48 to rotate around the central axis of the screw 48 itself, and the lifting member 45 can be slidably connected to the device seat 41 along the length direction of the cutting knife 2, and the lifting member 45 can be slidably matched with the screw groove of the screw 48 through the sliding connection part 452, so that when the third driving member 43 drives the screw 48 to rotate around the central axis of the screw 48 itself, the groove wall of the screw groove can push the lifting member 45 to slide relative to the device seat 41 along the length direction of the cutting knife 2, and the sliding direction of the lifting member 45 relative to the device seat 41 is determined by the rotation direction output by the third driving member 43. Therefore, it is possible to control the lifting member 45 to perform reciprocating motion relative to the device seat 41 along the length direction of the cutting knife 2 by the third driving member 43.

[0057] For example, in Figure 7 From the perspective of FIG, the third driving member 43 can drive the screw 48 to rotate clockwise around the central axis of the screw 48 itself, and push the ejecting member 45 along the groove wall perpendicular to the screw groove. Figure 7 When the third driving member 43 drives the screw 48 to rotate counterclockwise around the central axis of the screw 48, the top material member 45 is pushed along the groove wall perpendicular to the screw groove. Figure 7 Alternatively, the third driving member 43 can drive the screw 48 to rotate clockwise around the central axis of the screw 48 itself, and push the top material member 45 along the groove wall perpendicular to the groove. Figure 7 When the third driving member 43 drives the screw 48 to rotate counterclockwise around the central axis of the screw 48, the top material member 45 is pushed along the groove wall perpendicular to the screw groove. Figure 7 Slide inwards along the paper surface.

[0058] Optionally, the screw rod 48 can be rotatably connected to the device base 41 , so that the device base 41 can provide a certain support for the screw rod 48 , so as to help keep the relative posture of the screw rod 48 and the device base 41 stable.

[0059] When, as described in the above technical solution, the scrap removal device 4 also includes a sliding seat 46 and an elastic member 47, the lifting member 45 and the third driving member 43 are connected to the device seat 41 through the sliding seat 46, the lifting member 45 can be slidably connected to the sliding seat 46 along the length direction of the cutting knife 2.

[0060] In addition, optionally, the screw rod 48 can be rotatably connected to the sliding seat 46 .

[0061] In other embodiments, the third driving member 43 may include but is not limited to a linear motor and a cylinder, so as to directly drive the ejecting member 45 to reciprocate relative to the device base 41 along the length direction of the cutting blade 2 .

[0062] Optionally, the cutting device 100 also includes a pressing roller, which can roll the cut edge of the packaging film 200 to roll out bubbles that may exist near the edge of the packaging film 200, further reducing the possibility of bubbles being generated at the edge of the packaging film 200 after cutting, thereby reducing the probability of the problem of reduced sealing performance at the edge of the packaging film 200.

[0063] Optionally, the pressing roller includes a first pressing roller 5, which can be raised and lowered and arranged on the side facing the supporting surface 11, so that the edge of the packaging film 200 close to the upstream side can be rolled by the first pressing roller 5 to remove bubbles that may exist near the edge of the packaging film 200 close to the upstream side.

[0064] Alternatively, the pressing roller includes a second pressing roller 6, which can be raised and lowered and movably arranged along the conveying direction S on the side facing the supporting surface 11. The moving speed of the second pressing roller 6 along the conveying direction S is greater than the moving speed of the packaging film 200 along the conveying direction S, so that the edge of the packaging film 200 close to the downstream side can be rolled by the second pressing roller 6 to remove bubbles that may exist near the edge of the packaging film 200 close to the downstream side.

[0065] Alternatively, the pressing rollers include both a first pressing roller 5 and a second pressing roller 6 , so that the two opposite edges of the packaging film 200 along the conveying direction S can be pressed to remove bubbles as much as possible.

[0066] The pressing roller can be connected to any existing driving member so as to control the movement of the pressing roller through the driving member.

[0067] like Figure 9 As shown, the packaging film 200 includes a metal film layer 7, an adhesive film layer 8, and a release film layer 9 stacked in sequence. Normally, the packaging film 200 contacts the supporting surface 11 with the metal film layer 7. However, this will cause the edge of the metal film layer 7 to be squeezed when the cutting blade 2 cuts downward, forming a sharp corner at the edge of the metal film layer 7 ( Figure 9(Not shown), after the adhesive layer 8 of the packaging film 200 is attached to the electroluminescent layer 300 of the display panel, various circuit layers 400 must be covered on top of the metal film layer 7. The display panel typically generates heat during use, and the metal film layer 7 expands under this heat. Because the expansion amplitude is smaller at the sharp corners and larger at other thicker parts, the edges of the metal film layer 7 become further sharp, which can easily damage the circuit layer 400 covering the edge of the metal film layer 7, leading to circuit short circuits and other problems.

[0068] Based on this, optionally, the packaging film 200 is placed on the carrying platform 1 with the release film layer 9 facing downward and directly contacting the carrying surface 11, that is, the carrying surface 11 is used to directly support the release film layer 9, so that when the cutting knife 2 cuts downward, it can squeeze the metal film layer 7 toward the adhesive film layer 8, so that the exposed edge of the metal film layer 7 forms a structure similar to a rounded corner, so as to avoid the formation of sharp corners at the edge of the metal film layer 7 covered by the circuit layer 400 in the use state, wherein, Figure 9 FIG. 4 shows that the edge of the metal film layer 7 covered by the circuit layer 400 forms a structure similar to a rounded corner.

[0069] When, as described in the aforementioned technical solution, the first surface 21 is a plane and is parallel to the carrying surface 11 , the first surface 21 can also be used to assist in pressing the metal film layer 7 .

[0070] It is understandable that when the packaging film 200 is placed on the supporting platform 1 with the release film layer 9 facing downward and directly contacting the supporting surface 11, if the packaging film is cut using a cutting knife provided in the related art, the first surface and the second surface will still contact the adhesive layer of the packaging film during the cutting process, causing the edges of the adhesive layer to adhere to the first and second surfaces. This will cause the edges of the adhesive layer to be lifted upward by the first and second surfaces when the cutting knife is lifted, and even cause the edges of the release film to separate from the adhesive layer. When the cutting knife continues to lift and separates from the adhesive layer, the edges of the adhesive layer fall back downward and reconnect with the release film, which can still easily lead to the problem of bubbles being sealed near the edges of the adhesive layer and the release film.

[0071] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments, but can be manufactured in various forms, and those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or basic features of the present invention. Therefore, it should be understood that the above embodiments are illustrative and not restrictive in all aspects.

Claims

1. A device for cutting a packaging film of a display panel, used for cutting a packaging film in transit, characterized in that: The cutting equipment comprises: A carrying platform, the carrying platform having a carrying surface for carrying the packaging film; a cutting blade, the cutting blade being disposed above the carrying surface, the cutting end of the cutting blade having a first surface and two second surfaces, the two second surfaces being respectively connected to edges of two opposite sides of the first surface along the conveying direction of the packaging film, the two second surfaces being close to each other on a side away from the first surface, the connection between the second surface and the first surface forming a cutting sharp corner portion, the cutting sharp corner portion having a sharp angle θ, θ<90°; and, A first driving member is connected to the cutting blade, and the first driving member can drive the cutting blade to approach or move away from the carrying surface along a direction perpendicular to the carrying surface.

2. The display panel packaging film cutting device according to claim 1, characterized in that: The first surface is a plane, and the first surface is parallel to the supporting surface.

3. The cutting device for the packaging film of the display panel according to claim 1, characterized in that: A middle portion of the first surface is recessed in a direction away from the supporting platform.

4. The cutting device for the packaging film of the display panel according to claim 3, characterized in that: At least a portion of the first surface is an inclined surface, or at least a portion of the first surface is a curved surface.

5. The cutting device for the packaging film of the display panel according to claim 3, characterized in that: The cutting device further includes a scrap material removal device, which includes a device base, a second driving member, a third driving member, a material receiving structure, and a material ejecting member, wherein the device base is fixed to one side of the cutting blade along the conveying direction and is located on the side facing the supporting surface; The second driving member is connected between the device base and the material receiving structure, and the second driving member can drive the material receiving structure to reciprocate relative to the device base along the conveying direction; The lifting member is located on the side of the material receiving structure away from the supporting platform, and the third driving member is connected between the device seat and the lifting member. The third driving member can drive the lifting member to move relative to the device seat along the length direction of the cutting knife, and the lifting member can abut against the first surface, and the lifting end of the lifting member can abut against the packaging film scrap connected to the first surface.

6. The cutting device for the packaging film of the display panel according to claim 5, characterized in that: The ejecting member has a guide surface capable of abutting against the first surface, the guide surface is connected to the end surface of the ejecting end, and the portion of the guide surface closer to the end surface of the ejecting end is closer to the supporting platform; The scrap material removal device also includes a sliding seat and an elastic member. The sliding seat can be slidably connected to the device seat in a direction perpendicular to the bearing surface. The elastic member is connected between the sliding seat and the device seat. The elastic member can apply elastic force to the sliding seat and the device seat so that the sliding seat and the device seat always have a tendency to move closer to each other. The third driving member is connected between the sliding seat and the lifting member.

7. The display panel packaging film cutting device according to claim 5, characterized in that: The scrap removal device also includes a screw, the output end of the third driving member is transmission-connected to the screw, the third driving member can drive the screw to rotate around the central axis of the screw itself, the lifting member can be slidably connected to the device seat along the length direction of the cutting knife, and the lifting member can be slidably fitted into the screw groove of the screw.

8. The device for cutting the packaging film of a display panel according to any one of claims 1 to 7, characterized in that: The cutting device further includes a pressing roller capable of rolling the cut edge of the packaging film.

9. The display panel packaging film cutting device according to claim 8, characterized in that: The pressing roller includes a first pressing roller, and the first pressing roller is arranged to be raised and lowered on the side facing the bearing surface; and / or, The pressing roller includes a second pressing roller, which is movable along the conveying direction and is arranged on the side facing the carrying surface. The moving speed of the second pressing roller along the conveying direction is greater than the moving speed of the packaging film along the conveying direction.

10. The device for cutting the packaging film of a display panel according to any one of claims 1 to 7, characterized in that: The packaging film includes a metal film layer, an adhesive film layer, and a release film layer stacked in sequence. The packaging film is placed on the carrying platform with the release film layer facing downward and directly contacting the carrying surface.

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