CN216422633U - Cutting knife wheel and cutting tool for cutting sealing glue glass - Google Patents

Abstract

The utility model discloses a cutting knife flywheel and cutting tool for cutting sealed glue glass, wherein, the cutting knife flywheel includes discoid main part, the circumference of main part is formed with a plurality of first cutting teeth and a plurality of second cutting teeth in turn, first cutting tooth extends along the axial direction of main part, is used for cutting the glass layer of sealed glue glass, and forms the grooving between the adjacent first cutting tooth; the second cutting teeth extend along the radial direction of the main body and are used for cutting the sealing glue layer of the sealing glue glass, and the second cutting teeth are located in the cutting grooves. The utility model discloses a set up mutually perpendicular's first cutting tooth and second cutting tooth on the cutting break bar, once only cut the sealing compound layer and the glass layer of gluing glass at rolling in-process, be favorable to improving cutting efficiency, promote the yield of cutting product.

Description

Cutting knife wheel and cutting tool for cutting sealing glue glass

Technical Field

The utility model relates to a cutting equipment technical field especially relates to a cutting knife flywheel and cutting tool for cutting seals glue glass.

Background

At present, the Micro LED light-emitting technology in the semiconductor technology is used more and more widely as a new generation display technology, and the production requirements of Micro LED products are also improved along with the increase of market demands; the common Micro LED product manufacturing process mainly comprises four steps, namely, manufacturing a back plate with a metal circuit; bonding the chip on the glass substrate; thirdly, sealing glue on the glass substrate; fourthly, cutting the sealing glass, thus ensuring the final display size. In the fourth step, there are generally two schemes for cutting the sealing compound glass: in the first scheme, a cutter wheel is adopted to cut the glass surface, and then the glass and the adhesive layer are cracked in a cracking mode; in the second scheme, laser is adopted to cut the glass from the adhesive surface to the interior of the glass, and then external force is used for promoting cutting stress to permeate, so that the glass is cracked.

However, in actual operation, in the first scheme, because the glass has high hardness and low hardness, the adhesion between the adhesive layer and the glass is insufficient in the cutting process, and the adhesive layer and the glass are easily separated during repeated cutting, the relative displacement between the adhesive layer and the glass may occur, so that the product is scrapped; in the second scheme, although the glue layer and the glass cannot be peeled, the laser cutting has heat influence, so that the circuit can be burnt, and the electrical characteristics of the product can be damaged; therefore, the scheme for cutting the sealing glue glass disclosed by the prior art cannot achieve the purpose of safely and accurately cutting two materials with different hardness, and the cut product has low yield.

Accordingly, the prior art is yet to be improved and developed.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned prior art not enough, an object of the utility model is to provide a cutting break bar and cutting tool for cutting seals a gluey glass, aim at solving prior art and can't carry out the problem of safe and accurate cutting to sealing a gluey glass.

The technical scheme of the utility model as follows:

a cutter wheel for cutting sealed glass, comprising a disc-shaped body having a circumferential portion alternately formed with a plurality of first cutting teeth and a plurality of second cutting teeth, the first cutting teeth extending in an axial direction of the body for cutting a glass layer of the sealed glass, and a cutting groove being formed between adjacent ones of the first cutting teeth; the second cutting teeth extend along the radial direction of the main body and are used for cutting the sealing glue layer of the sealing glue glass, and the second cutting teeth are located in the cutting grooves. Through set up mutually perpendicular's first cutting tooth and second cutting tooth on cutting break bar, once only cut sealing glue layer and the glass layer of gluing glass at rolling in-process, the condition that peels off appears when being favorable to avoiding cutting two kinds of structures that the hardness is different, promotes the yield of cutting product.

Optionally, the first cutting tooth is in the shape of a quadrangular pyramid; the second cutting tooth is sheet-like in shape. The first cutting teeth have conicity, so that microcracks can be formed when the glass layer is cut, and the glass layer is convenient to break; the second cutting teeth are not provided with taper, the cutting edges are sharp, and the cutting of the sealing adhesive layer is facilitated.

Optionally, a first cutting edge is formed at the conical tip of the first cutting tooth; the end part of the second cutting tooth, which is away from the main body, forms a second cutting edge; wherein the first cutting edge and the second cutting edge are both located on a midline of the body along an axial direction. In the rolling process, the gravity of the main body is pressed on the cutting edges, and when the first cutting edge and the second cutting edge are located on the middle line of the main body in the axial direction, the gravity center of the cutter wheel is stable in the rolling process, the occurrence of the condition that the cutter wheel is laterally deviated or inclined is reduced, and the stable rolling cutting is facilitated.

Optionally, a distance value from the first edge to the bottom of the cutting groove is a first depth of cut, a distance value from the second edge to the bottom of the cutting groove is a second depth of cut, and the first depth of cut is greater than the second depth of cut. When the cutting, the sealing compound layer of sealing compound glass is last and the glass layer is under, the cutting break bar contacts the sealing compound layer earlier, so first blade undercut passes the sealing compound layer, and the second blade is also cutting downwards simultaneously, stops the undercutting when the second blade passes the sealing compound layer, because first cutting depth is greater than second cutting depth this moment, so the position of first blade is darker, when just can realizing accomplishing the complete cutting to the sealing compound layer, cut out the purpose of microcrack on the glass layer.

Optionally, the cross-sectional shape of the cutting groove along the radial direction of the main body is a V shape; wherein the cutting groove consists of two crossed cutting edge faces, and the crossing angle of the two cutting edge faces is 10-30 degrees. When the inclination angles of the surfaces of two adjacent first cutting teeth are small, the angle of the cutting groove is small, so that the first cutting teeth are reversely pushed, and when the intersection angle of the two cutting blade surfaces is small and is within the range of 10-30 degrees, the head of each first cutting tooth is sharp and is easy to cut into a glass layer, and the smooth cutting of the glass layer is facilitated.

Optionally, a bearing hole is formed in the center of the main body. The bearing and the transmission rod can be installed at the center of the main body to control the cutting knife wheel to roll, the position of the bearing hole is located at the center of the main body, stability in the motion process of the cutting knife wheel is kept, uniformity of cutting depth and force is kept, cutting effect is improved, and product yield is improved.

Optionally, the first cutting tooth, the second cutting tooth and the body are integrally formed. The integrally formed structure is relatively stable, the compression resistance is good, and the generation of undesirable phenomena such as dislocation, fracture and the like can be reduced in the using process.

The application also discloses a cutting tool, wherein the cutting tool comprises the cutting tool wheel for cutting the sealing glue glass.

Optionally, the cutting tool further comprises a vacuum adsorption base, the vacuum adsorption base is opposite to the cutting knife wheel, and the vacuum adsorption base faces one side of the cutting knife wheel and fixes the adhesive sealing glass. In the rolling cutting process, the cutting tool moves on the sealing rubber glass, thrust is easily generated on the sealing rubber glass, the vacuum adsorption base is arranged to fix the sealing rubber glass, the sealing rubber glass is prevented from shifting in the cutting process, and the cutting accuracy is improved.

Optionally, the cutting tool further includes a charge coupled device alignment structure for positioning the position of the sealing glass on the vacuum absorption base. In batch operation, the rolling path of the cutting tool on the vacuum adsorption base is fixed, so that the positions where the seal glass needs to be placed are the same every time, the charge-coupled device alignment structure is arranged for positioning before cutting, positioning is accurate, precision is high, and accuracy in cutting the seal glass is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a middle cutting wheel according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of the cutting wheel and the sealing glass of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

fig. 5 is a schematic structural view of the middle cutting tool of the present invention.

Wherein, 100, cutting knife wheel; 110. a main body; 120. a first cutting tooth; 121. a first cutting edge; 122. a first feed depth; 130. a second cutting tooth; 131. a second cutting edge; 132. a second feed depth; 140. grooving; 141. cutting the blade face; 150. a bearing bore; 200. sealing glue glass; 210. sealing the adhesive layer; 220. a glass layer; 300. a vacuum adsorption base; 400. a charge coupled device.

Detailed Description

In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the prior art, due to the characteristics of small size, high integration level, self-luminescence and the like of the Micro LED chip, compared with the traditional light emitting diode, the Micro LED chip has greater advantages in the aspects of brightness, resolution, contrast, energy consumption, service life, response speed, thermal stability and the like in the aspect of display and is more suitable for the selection tendency of users, so that enterprises are more and more in production and research and development of the Micro LED chip; because the single Micro LED chip is inconvenient to manufacture due to small volume, the sealing glue glass is generally produced in batch in the production process and then cut into products.

Specifically, the conventional Micro LED chip has the following processing flow:

1. making metal copper wires on a glass substrate;

2. carrying out high-precision chip bonding on the glass substrate;

3. sealing a layer of black glue on the surface of the glass substrate;

4. and cutting and splitting the glass with high precision.

However, when cutting, the sealing glass has a sealing layer and a glass layer with different hardness, so that peeling is easy to occur, the yield of the product is not up to standard, and the use is affected.

As shown in fig. 1 and 3, in an embodiment of the present invention, a cutting wheel 100 for cutting a sealing glass 200 is disclosed, wherein the cutting wheel comprises a disc-shaped main body 110, a plurality of first cutting teeth 120 and a plurality of second cutting teeth 130 are alternately formed on a circumference of the main body 110, the first cutting teeth 120 extend along an axial direction of the main body 110 for cutting a glass layer 220 of the sealing glass 200, and a cutting groove 140 is formed between adjacent first cutting teeth 120; the second cutting tooth 130 extends along a radial direction of the main body 110 for cutting the sealant layer 210 of the sealant glass 200, and the second cutting tooth 130 is located in the incision groove 140.

In this embodiment, the sealing glass 200 is cut by arranging the disc-shaped cutting wheel 100 to roll on the sealing glass 200, the cutting wheel 100 comprises a first cutting tooth 120 and a second cutting tooth 130 which are arranged along different directions, and the hard glass layer 220 and the soft sealing adhesive layer 210 in the sealing glass 200 are respectively cut, specifically, the cutting wheel 100 is pressed on the sealing adhesive layer 210 in the process that the first cutting tooth 120 cuts and penetrates through the sealing adhesive layer 210 in the rolling process, the cut sealing adhesive layer 210 is clamped in the cutting groove 140 and prevented from shifting after being limited, and meanwhile, the second cutting tooth 130 also cuts the sealing adhesive layer 210 along the radial direction of the main body 110, namely, the cross-shaped cutting on the sealing adhesive layer 210 is completed at one time; in addition, after the first cutting teeth 120 cut the adhesive tape layer 210, the first cutting teeth continue to advance to the glass layer 220, so that microcracks are cut on the glass layer 220, and the splitting is convenient; in summary, after the single rolling, the cutting knife wheel 100 finishes the cutting of the sealing glass 200, and can directly perform the splitting, thereby improving the cutting speed, saving the process steps, having high processing accuracy, being beneficial to avoiding the stripping condition when two structures with different hardness are cut, and improving the yield of the cut products.

Specifically, as an embodiment of the present embodiment, it is disclosed that the shape of the first cutting tooth 120 is a quadrangular pyramid; the second cutting tooth 130 is shaped as a plate. The first cutting teeth 120 are used for cutting the glass layer 220 with high hardness, and the cutting difficulty is high, so the cutting teeth are arranged in a quadrangular pyramid shape, and the geometrical knowledge shows that the tapered structure is very stable, the tapered structure cannot be easily inclined or bent even meeting high resistance, and cannot be easily broken from the middle, the mechanical property is good, and the smooth formation of microcracks is facilitated when the glass layer 220 is cut.

The second cutting teeth 130 are used for cutting the sealant layer 210, the hardness of the sealant layer 210 is low, but the second cutting teeth 130 are pressed by the cutting knife wheel 100 in the cutting process and have a moving risk, so that the second cutting teeth 130 are arranged to be sheet-shaped, the side surface of the second cutting teeth has no taper, and the lateral pressing of the second cutting teeth 130 on the sealant layer 210 is reduced, so that the separation of the sealant layer 210 and the glass layer 220 is reduced; in addition, the front end of the sheet-shaped structure only has a shearing force effect during cutting, and the acting area of the sealing adhesive layer 210 is small, so that the shearing force is large, and the sheet-shaped structure is easy to cut; in other words, the cutting edge of the second cutting tooth 130 is sharp, which is beneficial to cutting off the adhesive layer 210.

As shown in fig. 2, as another embodiment of the present embodiment, it is disclosed that a first cutting edge 121 is formed at a taper point of the first cutting tooth 120; the end of the second cutting tooth 130 facing away from the body 110 forms a second cutting edge 131; wherein the first cutting edge 121 and the second cutting edge 131 are both located on a midline of the body 110 in the axial direction. In the rolling process, the gravity of the main body 110 presses on the cutting edges, so that the first cutting edge 121 and the second cutting edge 131 generate shearing acting force on the sealing glass 200, and when the first cutting edge 121 and the second cutting edge 131 are arranged on the center line of the main body 110 along the axial direction, the cutting knife flywheel 100 has a symmetrical structure, and the mass distribution center is overlapped with the geometric center, that is, the gravity center of the cutting knife flywheel is stable in the rolling process, so that the occurrence of the lateral deviation or inclination of the cutting knife flywheel is reduced, and the stable rolling cutting is facilitated.

As shown in fig. 4, as another embodiment of the present embodiment, it is disclosed that the distance from the first edge 121 to the bottom of the incision 140 has a first depth of cut 122, the distance from the second edge 131 to the bottom of the incision 140 has a second depth of cut 132, and the first depth of cut 122 is greater than the second depth of cut 132. In this embodiment, when the sealing layer 210 of the sealing glass 200 is on the top and the glass layer 220 is on the bottom, the cutting wheel 100 contacts the sealing layer 210 first, so the first cutting edge 121 cuts downward to penetrate through the sealing layer 210, and the second cutting edge 131 also cuts downward at the same time, until the second cutting edge 131 penetrates through the sealing layer 210, the downward cutting is stopped, at this time, since the first cutting depth 122 is greater than the second cutting depth 132, the position of the first cutting edge 121 is deeper, and the purpose of cutting micro-cracks on the glass layer 220 while completing the complete cutting of the sealing layer 210 can be achieved.

Specifically, as another embodiment of the present embodiment, it is disclosed that the cross-sectional shape of the cutting groove 140 in the radial direction of the body 110 is V-shaped; wherein the cutting groove 140 is composed of two crossed cutting edge surfaces 141, and the crossing angle of the two cutting edge surfaces 141 is 10-30 degrees. When the inclination angle of the surfaces of two adjacent first cutting teeth 120 is small, the angle of the cutting groove 140 is small, so that the first cutting teeth 120 are sharp in head when the intersection angle of the two cutting edge surfaces 141 is small and is in the range of 10-30 degrees, and can cut into the glass layer 220 more easily, thereby being beneficial to smoothly cutting microcracks.

Specifically, in actual operation, the angle of the cutting groove 140 on the cutting knife wheel 100 is determined according to the chip spacing on the sealing glass 200, and the spacing between two adjacent first cutting teeth 120 is set to be the spacing between one Micro LED chip, two Micro LED chips, or the spacing between a plurality of Micro LED chips according to the cutting requirement, so that a cutting line can be formed at the cutting position of each first cutting tooth 120, and the Micro LED chips can be rapidly cut in the subsequent splitting process.

As shown in fig. 1, as another embodiment of the present embodiment, it is disclosed that a bearing hole 150 is provided at a central position of the main body 110. The bearing and the transmission rod can be installed at the center of the main body 110 to control the rolling of the cutting knife flywheel 100, the position of the bearing hole 150 is arranged at the center of the main body 110, so that the stability of the cutting knife flywheel 100 in the motion process is kept, the uniformity of the cutting depth and the cutting force is kept, the cutting effect is improved, and the product yield is improved.

Specifically, as another embodiment of the present embodiment, it is disclosed that the first cutting tooth 120, the second cutting tooth 130 and the main body 110 are integrally formed. The integrally formed structure is relatively stable, the compression resistance is good, and the generation of undesirable phenomena such as dislocation, fracture and the like can be reduced in the using process; in addition, the process steps of integrally forming the cutter wheel 100 are less, and the processing time is saved.

As shown in fig. 5, as another embodiment of the present application, a cutting tool is disclosed, wherein the cutting tool comprises the cutting wheel 100 for cutting the sealing compound glass 200 as described above.

Specifically, as another embodiment of this embodiment, it is disclosed that the cutting tool further includes a vacuum absorption base 300, the vacuum absorption base 300 is disposed opposite to the cutting knife flywheel 100, and one side of the vacuum absorption base 300 facing the cutting knife flywheel 100 fixes the sealing glass 200. In the rolling cutting process, the cutting tool moves on the sealing rubber glass 200, so that thrust is inevitably generated on the sealing rubber glass 200, the vacuum adsorption base 300 is arranged to fix the sealing rubber glass 200, the sealing rubber glass 200 is prevented from shifting in the cutting process, and the cutting accuracy is improved.

Specifically, as another implementation manner of this embodiment, it is disclosed that the cutting tool further includes a Charge-coupled Device (CCD) 400 aligning structure for positioning the position of the sealing glass 200 on the vacuum absorption base 300. In batch operation, the rolling path of the cutting tool on the vacuum adsorption base 300 is fixed, so the position where the sealing glass 200 needs to be placed is the same every time, the charge-coupled device 400 is arranged to position the alignment structure before cutting, the positioning is accurate, the precision is high, and the accuracy of cutting the sealing glass 200 is improved.

Specifically, as another embodiment of this embodiment, a cutting flow of the cutting tool is disclosed as follows:

1. a vacuum adsorption base 300 provided with a vacuum suction groove;

2. placing the sealing glue glass 200 on the vacuum adsorption base 300, and starting the vacuum adsorption function;

3. starting the CCD, searching a glass sample reference, and accurately positioning the sealing glass 200;

4. starting a cutting program, and cutting the sealing glue glass 200 by using the cutting knife wheel 100;

5. and (4) splitting the product.

In summary, the present application discloses a cutting wheel 100 for cutting a sealing glass 200, which includes a disc-shaped main body 110, wherein a plurality of first cutting teeth 120 and a plurality of second cutting teeth 130 are alternately formed on a circumferential portion of the main body 110, the first cutting teeth 120 extend along an axial direction of the main body 110 for cutting a glass layer 220 of the sealing glass 200, and a cutting groove 140 is formed between adjacent first cutting teeth 120; the second cutting tooth 130 extends along a radial direction of the main body 110 for cutting the sealant layer 210 of the sealant glass 200, and the second cutting tooth 130 is located in the incision groove 140. In this embodiment, the sealing glass 200 is cut by arranging the disc-shaped cutting wheel 100 to roll on the sealing glass 200, the cutting wheel 100 includes the first cutting teeth 120 and the second cutting teeth 130 arranged along different directions, and respectively cuts the hard glass layer 220 and the soft sealing adhesive layer 210 in the sealing glass 200, specifically, the cutting wheel 100 is pressed on the sealing adhesive layer 210 in the process that the first cutting teeth 120 cut and penetrate through the sealing adhesive layer 210 in the rolling process, the cut sealing adhesive layer 210 is clamped in the cutting grooves 140 and is prevented from shifting after being limited, and meanwhile, the second cutting teeth 130 also cut the sealing adhesive layer 210 along the radial direction of the main body 110, that is, the cross-shaped cutting on the sealing adhesive layer 210 is completed at one time; in addition, after the first cutting teeth 120 cut the adhesive tape layer 210, the first cutting teeth continue to advance to the glass layer 220, so that microcracks are cut on the glass layer 220, and the splitting is convenient; in summary, after the single rolling, the cutting knife wheel 100 finishes the cutting of the sealing glass 200, and can directly perform the splitting, thereby improving the cutting speed, saving the process steps, having high processing accuracy, being beneficial to avoiding the stripping condition when two structures with different hardness are cut, and improving the yield of the cut products.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the utility model discloses it is right to use the cutting knife flywheel of Micro LED chip as the example the utility model discloses a concrete structure and theory of operation introduce, nevertheless the utility model discloses an use and do not use the cutting knife flywheel of Micro LED chip as the limit, also can use in the production and the cutting of other similar work pieces.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A cutter wheel for cutting sealed glass, comprising a disk-shaped body having a circumferential portion alternately formed with a plurality of first cutting teeth and a plurality of second cutting teeth, the first cutting teeth extending in an axial direction of the body for cutting a glass layer of the sealed glass, and a cutting groove being formed between adjacent ones of the first cutting teeth; the second cutting teeth extend along the radial direction of the main body and are used for cutting the sealing glue layer of the sealing glue glass, and the second cutting teeth are located in the cutting grooves.

2. The cutter wheel for cutting encapsulated glass as defined in claim 1, wherein said first cutting tooth is in the shape of a quadrangular pyramid; the second cutting teeth are sheet-shaped.

3. The cutter wheel for cutting the sealed glass according to claim 2, wherein a first cutting edge is formed at the conical tip of the first cutting tooth; the end part of the second cutting tooth, which is away from the main body, forms a second cutting edge; wherein the first cutting edge and the second cutting edge are both located on a midline of the body in an axial direction.

4. The cutting wheel for cutting encapsulated glass as defined in claim 3, wherein the distance from the first edge to the bottom of the cut groove has a first depth of cut, the distance from the second edge to the bottom of the cut groove has a second depth of cut, and the first depth of cut is greater than the second depth of cut.

5. The cutting wheel for cutting encapsulated glass as defined in claim 2, wherein a cross-sectional shape of the cutting groove in a radial direction of the body is V-shaped; wherein the cutting groove consists of two crossed cutting edge faces, and the crossing angle of the two cutting edge faces is 10-30 degrees.

6. The cutting wheel for cutting encapsulated glass as defined in claim 1, wherein said body has a bearing hole at a central position thereof.

7. The cutter wheel for cutting encapsulated glass as claimed in any one of claims 1 to 6, wherein said first cutting tooth, said second cutting tooth and said body are integrally formed.

8. A cutting tool, characterized in that, comprises the cutting knife wheel for cutting the sealing compound glass according to any one of the claims 1 to 7.

9. The cutting tool of claim 8, further comprising a vacuum suction base disposed opposite the cutting wheel, wherein a side of the vacuum suction base facing the cutting wheel secures the encapsulated glass.

10. The cutting tool of claim 9, further comprising a CCD alignment structure for positioning the position of the sealing glass on the vacuum chuck.

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