Ultra-thin glass cutting method and cutting device

Abstract

The application discloses an ultrathin glass cutting method and a cutting device, and relates to the technical field of glass production. The ultrathin glass cutting method comprises the following steps: transferring a glass plate to a cutting base; adjusting a laser focal point, so that the laser focal point moves in a wave shape along the thickness direction of the glass plate in any straight line direction of the plate surface of the parallel glass plate; and cutting the glass plate into pieces.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass production, in particular to a cutting method and cutting device for ultra-thin glass. BACKGROUND

[0002] With the popularity of flexible display, glass plate is increasingly becoming the best substrate material and protective material, and the thickness can reach microns; but the advantages of ultra-thin glass plate must ensure that the surface is scratch-free, pollution-free, and the edge is smooth without burrs. At present, the cutting and splitting of glass plates are mostly carried out by laser cutting. By forming a concentrated heat area in the glass plate, the glass plate can be split in this area.

[0003] However, for ultra-thin glass plates, the thickness is small and the brittleness is large. The current laser cutting is a straight cutting corresponding to a certain thickness position of the glass plate. Concentrated heating, insufficient heating, or uneven heating will all cause burrs or cracks. SUMMARY

[0004] The embodiments of the present application provide a cutting method and cutting device for ultra-thin glass to solve the problem of low product yield caused by burrs or cracks in traditional laser straight cutting of ultra-thin glass.

[0005] To solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0006] The first aspect of the present application provides a cutting method for ultra-thin glass, comprising the following steps:

[0007] Deliver the glass plate to the cutting base;

[0008] Adjust the laser focus to cut the glass plate, and make the laser focus move in a wave shape along the thickness direction of the glass plate in any straight line direction parallel to the plate surface of the glass plate;

[0009] Split the glass plate after cutting.

[0010] In some modified embodiments of the first aspect of the present application, the aforementioned cutting method for ultra-thin glass, wherein the step of adjusting the laser focus to cut the glass plate, and making the laser focus move in a wave shape along the thickness direction of the glass plate in any straight line direction parallel to the plate surface of the glass plate, comprises:

[0011] Move up and down in a wave shape based on the midpoint of the thickness direction of the glass plate.

[0012] In some modified embodiments of the first aspect of the present application, the aforementioned cutting method for ultra-thin glass, wherein the step of moving up and down in a wave shape based on the midpoint of the thickness direction of the glass plate, comprises:

[0013] Adjust the focus of the laser according to formula (1).

[0014] (1)

[0015] wherein: is the longitudinal coordinate value of the laser focal point in the base coordinate system; h is the thickness of the glass plate, h≤2mm; x is the horizontal coordinate value of the laser focal point in the moving direction in the base coordinate system; m is a glass plate related constant, 5≤m≤500.

[0016] In some modified embodiments of the first aspect of the present application, the aforementioned method for cutting ultra-thin glass, wherein the step of moving up and down in a wave shape with the midpoint of the glass plate thickness as the reference, further comprises:

[0017] For the glass plate that is concave downward due to gravity, formula (3) is obtained according to formula (1) and formula (2), and the focal point of the laser is adjusted according to formula (3);

[0018] (2)

[0019] Y=y+α (3)

[0020] wherein: y is the longitudinal coordinate value of the lower surface of the glass plate in the base coordinate system; r is the radius of the circular arc of the gravity concave part of the glass plate; is the distance between the lowest part of the gravity concave part of the glass plate and the upper surface of the base; x is the horizontal coordinate value of the laser focal point in the moving direction in the base coordinate system; n is the nth concave position of the glass plate under gravity; is the width of the gravity concave part of the glass plate; is the base support width between adjacent glass plate concave parts; Y is the longitudinal coordinate value of the laser focal point corresponding to the concave glass plate in the base coordinate system.

[0021] The second aspect of the present application provides a cutting device based on the aforementioned method for cutting ultra-thin glass, which comprises:

[0022] a cutting base, the cutting base having a support surface for supporting the glass plate;

[0023] a laser emitting assembly, the laser emitting assembly being arranged above the support surface and spaced apart from the support surface, to emit cutting laser to the support surface according to control instructions; the focal point of the laser moves in a wave shape along the thickness direction of the glass plate in any straight line direction parallel to the plate surface of the glass plate;

[0024] a transfer assembly, the transfer assembly being arranged in sequence with the cutting base, for transferring the glass plate between the transfer trolley and the cutting base;

[0025] A linking assembly movably arranged on the transferring assembly, the linking assembly being capable of reciprocating relative to the transferring assembly along a transferring direction, and the linking assembly being capable of reciprocating relative to the transferring assembly along a direction perpendicular to a transferring surface of the transferring assembly to reciprocally transfer the glass sheet between the transferring assembly and the supporting surface.

[0026] In some modified embodiments of the second aspect of the present application, the aforementioned ultra-thin glass cutting device, wherein the cutting base has a plurality of supporting blocks and linking grooves alternately arranged along a width direction of the cutting base, and the upper surfaces of the supporting blocks are at the same height to form the supporting surface.

[0027] The linking assembly comprises a linking frame comprising a plurality of linking members arranged at intervals along a width direction of the transferring assembly, and the linking members are adapted to the linking grooves.

[0028] The linking frame is capable of lifting the glass sheet on the transferring assembly, translating to above the supporting surface, lowering into the linking grooves to make the glass sheet supported by the supporting surface, and translating back to the transferring assembly according to the linking instructions.

[0029] In some modified embodiments of the second aspect of the present application, the aforementioned ultra-thin glass cutting device, wherein the transferring assembly comprises a plurality of conveying belts arranged at intervals along a width direction of the transferring assembly, and the conveying belts are synchronously moved.

[0030] The linking members of the linking frame and the conveying belts are alternately arranged along the width direction of the transferring assembly, so that the linking frame is capable of reciprocating relative to the transferring assembly between adjacent conveying belts.

[0031] In some modified embodiments of the second aspect of the present application, the aforementioned ultra-thin glass cutting device, wherein the transferring assembly comprises a rack, and the conveying belts and the linking assembly are arranged on the rack.

[0032] The linking assembly further comprises a first base and a first lifting assembly.

[0033] The first base is movably connected to the rack to be capable of reciprocating relative to the rack along a conveying direction of the transferring assembly.

[0034] The first end of the first lifting assembly is connected to the first base, and the second end is connected to the linking frame, so that the linking frame is capable of lifting relative to the first base.

[0035] In some modified embodiments of the second aspect of the present application, the aforementioned ultra-thin glass cutting device, wherein the linking assembly further comprises a second base and a second lifting assembly.

[0036] The second base is connected to a second end of the first lifting assembly;

[0037] A first end of the second lifting assembly is connected to the second base, and a second end of the second lifting assembly is connected to the docking rack, so that the docking rack can be lifted relative to the second base.

[0038] In some modified embodiments of the second aspect of the present application, the aforementioned ultra-thin glass cutting device further comprises a controller, a first driving part and a second driving part;

[0039] The first driving part is configured to drive the transmission assembly according to a first driving instruction;

[0040] The second driving part is configured to drive the docking assembly according to a second driving instruction;

[0041] The controller is in signal connection with the first driving part and the second driving part, and is configured to send the first driving instruction and the second driving instruction to the first driving part and the second driving part, respectively, according to a starting instruction.

[0042] Compared with the prior art, the ultra-thin glass cutting method provided by the present application adjusts the laser focal point to make the laser focal point on the glass plate thickness fluctuate up and down, so that the laser forms a waveform cutting line inside the glass plate, prolongs the path of the cutting line, and thus improves the heat applied in the glass plate, and the heat is uniformly distributed, thereby reducing the difficulty of cracking, effectively reducing the generation of burrs and cracks, and greatly improving the product yield. Thus, the problem of low product yield caused by burrs or cracks in traditional laser straight cutting for ultra-thin glass is solved. BRIEF DESCRIPTION OF DRAWINGS

[0043] The above and other objects, features and advantages of the exemplary embodiments of the present application will be readily understood through reading the detailed description of the exemplary embodiments of the present application below, with reference to the accompanying drawings. In the drawings, several embodiments of the present application are illustrated by way of example and not limitation, in which the same or corresponding elements are referred to with the same or corresponding reference numerals, in which:

[0044] Figure 1 A flowchart of the ultra-thin glass cutting method provided by the present embodiment is schematically shown;

[0045] Figure 2 A state diagram of the corresponding glass plate recess in the ultra-thin glass cutting method provided by the present embodiment is schematically shown;

[0046] Figure 3 The edge of the glass after cracking in the traditional laser cutting method is schematically shown;

[0047] Figure 4The image schematically illustrates the edge of the glass after it has been split using the laser cutting method provided in this embodiment.

[0048] Figure 5 A schematic diagram of the structure of the ultrathin glass cutting device provided in this embodiment is shown.

[0049] Figure 6 A schematic diagram of the structure of the base in the ultrathin glass cutting device provided in this embodiment is shown.

[0050] Figure 7 A schematic diagram of the transfer component in the ultrathin glass cutting device provided in this embodiment is shown.

[0051] Figure 8 The schematic diagram illustrates the structural cooperation between the connecting components and the frame in the ultra-thin glass cutting device provided in this embodiment;

[0052] Figure 9 A schematic diagram of the structure of the ultrathin glass cutting device provided in this embodiment is shown.

[0053] Reference numerals: Cutting base 1, Support surface 11, Connecting groove 12, Support block 13, Controller 2, Laser emitting assembly 3, Transfer assembly 4, Conveyor belt 41, First drive motor 42, Synchronous belt 43, Synchronous pulley 44, Shaft 45, Frame 46, Column 47, Guide plate 48, Connecting frame 5, Connecting piece 51, First base 52, First lifting assembly 53, Rodless cylinder 531, Second drive motor 54, Drive screw 55, Guide column 56, Second base 57, Second lifting assembly 58, Cover 6. Detailed Implementation

[0054] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0055] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0056] The technical solution of this application embodiment is to solve the above-mentioned technical problems, and the general idea is as follows:

[0057] Example 1

[0058] Reference Appendix Figure 1 The ultrathin glass cutting method provided in this application includes the following steps:

[0059] S101, deliver the glass sheet to the cutting base 1;

[0060] It can be understood that the embodiment is directed to ultra-thin glass, which can be a glass sheet with a thickness of not more than 2 mm. In the embodiment, the delivery of the glass sheet can be achieved by a conveying belt, a conveying roller or other delivery components for full-automatic conveying of the glass sheet. Specifically, the glass sheet is delivered from the transfer trolley to the cutting base 1 for laser cutting. In the process, contact with the glass is avoided as much as possible, i.e., direct extrusion, resistance, and grabbing of the coated surface and the chemically tempered surface are avoided. In the embodiment, the non-coated surface and the non-tempered surface of the glass sheet can be automatically supported and delivered by the conveying belt. The delivery process can include linear delivery, lifting support, translation and other actions to enable the glass sheet to be transferred from the delivery component to the cutting base 1. The cutting base 1 has a supporting surface 11, which is a plane that can be a complete and continuous plane, a plurality of planes with the same height that are discontinuous but collectively form the supporting surface, or a non-physical supporting surface formed by air floating. The supporting of the glass sheet can be supporting the entire surface of the glass sheet facing the supporting surface 11 or supporting part of the surface of the glass sheet facing the supporting surface 11. The above delivery process is reversed after the laser cutting in step S102 is completed to take the laser-cut glass sheet from the cutting base 1 and deliver it to the breaking process for breaking operation. It can be understood that the above process can be automatically controlled by the controller 2 to control the delivery component 4. In the process, precise positioning and cooperation can be achieved by cooperating with position sensors, electromagnetic sensors, infrared sensors, etc.

[0061] S102, adjust the laser focus to cut the glass sheet, and move the laser focus in a wave shape along the thickness direction of the glass sheet in a straight line direction parallel to the surface of the glass sheet;

[0062] It can be understood that the height of the focal point relative to the glass plate is adjusted by the controller 2 controlling the laser emitting assembly 3 to move up and down in a wave shape relative to the midpoint of the glass plate in the thickness direction of the glass plate. The above process can be realized by setting a dynamic zoom lens barrel on the laser emitter to adjust the focal length and thus the focal point position. Specifically, the controller 2 can be pre-set with a coordinate system with the supporting surface 11 as the zero reference surface, the width direction of the cutting base 1 as the X direction, and the height direction of the cutting base 1 as the Y direction. The X direction is the horizontal movement direction of the laser emitting assembly 3 when cutting the glass plate, and the Y direction is the movement direction of the focal point when the laser emitting assembly 3 cuts the glass plate. The trajectory formula of the focal point movement is pre-set in the controller 2, so that the focal point fluctuates up and down to form a wave-shaped trajectory based on the thickness center of the glass plate, thereby forming a wave-shaped cutting line in the thickness direction of the glass plate. This not only prolongs the path of the cutting line and increases the heat release into the glass, but also avoids heat concentration at the center of the glass thickness, thereby reducing the difficulty of cleaving and improving the smoothness of cleaving, greatly reducing the adverse problems such as burrs or cracks generated during cleaving.

[0063] S103, a glass plate after being cut;

[0064] It can be understood that after the glass plate forms a wave-shaped cutting line in the later stage of laser cutting, the glass plate is removed from the cutting base 1 and transported to the cleaving process for cleaving operation, completing the entire cutting process of the glass. During this process, the glass plate needs to undergo the reverse transmission process of the transmission process in step S101. For specific operations, please refer to step S101, which will not be described in detail here.

[0065] Specifically, to solve the problem of low product yield caused by burrs or cracks in traditional laser straight cutting of ultra-thin glass, the ultra-thin glass cutting method provided by the present application adjusts the laser focal point to make the laser focal point fluctuate up and down at the key point of the glass plate thickness, so that the laser forms a wave-shaped cutting line inside the glass plate, prolongs the path of the cutting line, and thus increases the heat applied in the glass plate, and uniformly distributes the heat, thereby reducing the difficulty of cleaving and effectively reducing the generation of burrs and cracks, greatly improving the product yield. Thus, the problem of low product yield caused by burrs or cracks in traditional laser straight cutting of ultra-thin glass is solved.

[0066] The term "and / or" in this document merely describes the association relationship of the associated objects, and indicates that there can be three relationships, for example, A and / or B, which can be specifically understood as: A and B can exist at the same time, A can exist alone, B can exist alone, and any one of the above three cases can exist.

[0067] Further, for step S102, the trajectory formula of the focal point movement pre-set in the controller is as follows:

[0068] adjusting the focal point of the laser according to formula (1);

[0069] (1)

[0070] wherein: is the longitudinal coordinate value of the focal point of the laser in the base coordinate system; h is the thickness of the glass plate, h≤2mm; x is the horizontal coordinate value of the focal point of the laser in the base coordinate system in the moving direction; m is the glass plate related constant, 5≤m≤500.

[0071] It can be understood that the base coordinate system is the coordinate system described in step S102 with the supporting surface 11 as the zero reference surface, the X direction is the horizontal movement direction of the laser emitting assembly 3 when cutting the glass plate, and the Y direction is the movement direction of the focal point of the laser emitting assembly 3 when cutting the glass plate, which is also the thickness direction of the glass. In this embodiment, the laser focal point is set to fluctuate up and down based on the center of the glass thickness, and then to be in a sinusoidal form, and the movement distance of the focal point is related to the thickness of the glass, and then the thickness of the glass and the longitudinal coordinate value of the focal point in the base coordinate system are designed to have a linear relationship, , through linear fitting, t=12-5h, and in this embodiment, t can be selected as an integer value according to rounding, for example: when the glass thickness is 0.02mm, 0.2mm, 0.4mm, 0.6mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, t is 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2 respectively; further, for ultra-thin glass, the overall thickness is small, and too large fluctuation amplitude is easy to cause damage to the glass surface, affect the cleavage and even the product yield, and then the glass plate related constant m is set in this embodiment, 1 / m is the maximum distance of the laser focal point moving up and down based on h / 2, the thinner the glass, the smaller 1 / m needs to be, and the larger m is, that is, the smaller the amplitude of the waveform trajectory, in this embodiment, m is determined to be in the above selected range of 5-500 through experiments, simulations and cutting effects, for example, m=10. It should be noted that the selection of m is related to the composition of the glass, the higher the strength of the glass, the smaller the value of m, for example: the m value of sodium calcium silicon glass is greater than that of aluminum glass, and the m value of aluminum glass is greater than that of high borosilicate glass. Of course, the corresponding cosine expression can also be transformed based on formula (1), which can be easily understood and implemented by those skilled in the art, and will not be described in detail here.

[0072] Further, with reference to the accompanying drawings Figure 3In order to ensure the safety during the transmission of the glass plate and avoid the abrasion of the coated surface and the tempered surface of the glass plate, the cutting base 1 with the alternating connection grooves 12 and supporting blocks 13 is used in the embodiment, and the transmission assembly 4 is matched to form the connection frame 5 through the spaced connection pieces 51, and the transmission of the glass plate is carried out by matching the connection grooves 12. The connection frame 5 can be lifted up to the top of the supporting surface 11 after the glass plate is lifted up relative to the transmission assembly 4, and then the connection frame 5 is lowered to make the connection pieces 51 fall into the connection grooves 12 to naturally support the glass plate on the supporting surface 11 formed by the supporting blocks 13. Correspondingly, when the cutting is completed, the glass plate can be separated from the supporting surface 11 by lifting up the connection frame 5, and then the connection frame 5 is reversely translated to the position of the transmission assembly 4 to carry out the next transportation. In the process, the connection frame 5 only contacts the back surface of the glass plate, and the contact mode is always upward supporting, without extrusion and grabbing, so that the upper surface of the glass plate or even the whole plate surface will not be scratched or bumped. Corresponding to the above transmission mode, when the glass plate is supported by the supporting blocks 13, the glass plate will be depressed to a certain extent at the position corresponding to the connection grooves 12 due to the gravity, that is, the midpoint of the thickness of the glass will no longer be kept in a straight line. In this state, the position of the focal point needs to be adjusted according to formula (1) to ensure that the focal point can accurately change the position of the center of the glass thickness, so as to avoid burrs or cracks.

[0073] In the embodiment, the glass plate corresponding to the part depressed downward under the influence of gravity is obtained according to formula (3) based on formula (1) and formula (2), and the focal point of the laser is adjusted according to formula (3);

[0074] (2)

[0075] Y=y+α (3)

[0076] In the formula, y is the vertical coordinate value of the lower surface of the glass plate in the base coordinate system; r is the radius of the circular arc of the part depressed by gravity of the glass plate; is the distance between the lowest part of the part depressed by gravity of the glass plate and the upper surface of the base; x is the horizontal coordinate value of the moving direction of the focal point of the laser in the base coordinate system; n is the n th depressed position of the glass plate under the influence of gravity; is the width of the part depressed by gravity of the glass plate; is the supporting width of the base between the depressed parts of adjacent glass plates; Y is the vertical coordinate value of the glass plate corresponding to the depressed part in the base coordinate system;

[0077] It is not difficult to understand that and can be obtained according to the actual structure size of the cutting base 1. In the embodiment, and may be equal or not equal; can be automatically obtained by laser ranging; reference is made to the drawingsFigure 2 , take the first docking groove 12 as an example in the base coordinate system, the glass plate is concave at this point, the distance from the lowest point to the supporting surface 11 is , the radius of the circular arc is r, and the distance from the center of the circular arc to the supporting surface 11 is , the width of the docking groove 12 is , the width of the supporting block 13 is , the width of the supporting block 13 before the docking groove 12 can be obtained according to the actual structure size, for example, in the embodiment, it can be designed as / 2, then ( )²+( )²=r²=( )²+( )², then r is solved, the center of the circular arc generated by the glass due to gravity downward is (a, b) in the coordinate of the device software running, as shown in Figure 2 , the coordinates of the center of the circular arc corresponding to the first docking groove 12 are (a1, b1), a1= + , b1=r- , the coordinates of the corresponding circular arc corresponding to the nth docking groove 12 are (a n , b n ), a n =(2n-1)a1, b n =r- , the formula of the corresponding circle is (x-a n )²+ (y-b n )²=r², where x is the corresponding horizontal coordinate in the process of the focal point of the running laser, and then the above formula (2) is obtained, y is used to show the vertical coordinate value of the lower surface of the glass plate in the base coordinate system, and then the position change of the thickness midpoint of the glass plate in the docking groove 12 is obtained, and then the position change of the glass plate in the docking groove 12 corresponding to the focal point of the laser is obtained by combining formula (1). It is not difficult to understand that the trajectory of the focal point of the laser on the area corresponding to the supporting block 13 is fluctuated up and down based on the horizontal line, and the trajectory of the focal point of the laser on the area corresponding to the docking groove 12 is fluctuated up and down based on the concave circular arc. It is not difficult to understand that when the width of the supporting block 13 before the docking groove 12 changes, formula (2) and formula (3) can change accordingly, and the change belongs to the protection content of the embodiment.

[0078] Referring to the accompanying drawings Figure 3 is the edge of the glass obtained by using the traditional laser cutting device and method, which generates a lot of burrs and cracks, Figure 4 is the edge of the glass obtained by using the cutting device and method provided in the embodiment, which is smooth and flat, and the product yield is greatly improved.

[0079] Embodiment 2

[0080] Reference is made to the accompanying drawings Figure 5 The cutting device for ultra-thin glass provided by the embodiment comprises a cutting base 1, a laser emitting assembly 3, a transferring assembly 4 and a connecting assembly. The cutting base 1 has a supporting surface 11 for supporting a glass plate. The laser emitting assembly 3 is arranged above the supporting surface 11 and spaced from the supporting surface 11, and emits cutting laser to the supporting surface 11 according to a control instruction. The focal point of the laser moves in a wave shape along the thickness direction of the glass plate in any straight line direction parallel to the plate surface of the glass plate. The transferring assembly 4 is arranged in sequence with the cutting base 1, and is used for transferring the glass plate between a transfer trolley (not shown in the figure) and the cutting base 1. The connecting assembly is movably arranged on the transferring assembly 4, and can reciprocate relative to the transferring assembly 4 along the transferring direction and reciprocate relative to the transferring assembly 4 along the direction perpendicular to the transferring surface of the transferring assembly 4, so as to reciprocate the glass plate between the transferring assembly 4 and the supporting surface 11.

[0081] It can be understood that, in order to solve the problem that the traditional linear laser cutting is prone to burrs or cracks and causes low product yield for ultra-thin glass, the cutting device for the cutting method of the ultra-thin glass provided by the embodiment 1 is a full-automatic control equipment, which can realize that the glass plate is not damaged during the transferring process and ensure the safety of the glass plate and improve the transferring and cutting efficiency.

[0082] The cutting base 1 is a rigid structure, which can be a table body structure, a platform structure, a frame structure and the like, and can provide the supporting surface 11. The supporting surface 11 is a plane, which can be a complete and continuous plane, or a plurality of planes with the same height which are discontinuous and combined together, or a non-solid supporting surface formed by air floating. The supporting of the glass plate can be the supporting of all plate surfaces of the glass plate towards the supporting surface 11, or the supporting of part of the plate surfaces of the glass plate towards the supporting surface 11, as long as the stability of the supporting of the glass plate is ensured. Figure 5 and Figure 6 In the embodiment, a cover body 6 can be arranged outside the cutting base 1. The cover body 6 is provided with a slot, and part of the cutting base 1 is arranged in the slot. The laser emitting assembly 3 is movably arranged on the top wall in the slot, and a laser cutting area is formed in the slot. The glass plate can be protected to some extent in the slot, and the edge of the glass plate can be prevented from being damaged. The shape and size of the cutting base 1 and the cover body 6 are not limited here, and can be designed and adjusted according to actual needs.

[0083] The laser emitting assembly 3 comprises a light source emitter and a dynamic zoom lens barrel, so that the light source emitter can realize the change of focal length through the dynamic zoom lens barrel, and the change of focal length is set as that which can be easily understood and realized by those skilled in the art, and will not be described in detail here. The laser emitting assembly 3 in the embodiment can also be matched with guide rails, sliding blocks and driving motors to realize the horizontal movement of the light source emitter above the cutting base 1. The above structure is easily understood by those skilled in the art, and will not be described in detail here.

[0084] It can be understood that the ultrathin glass cutting device provided by the embodiment further comprises a controller 2, which is a PLC controller capable of data receiving, analyzing, comparing and program editing. The controller 2 is electrically connected with the driving motor, the laser emitter and the dynamic zoom lens barrel of the laser emitting assembly 3, so as to control the light source emitter to change the focal length while moving horizontally according to the positioning information of the glass plate relative to the cutting base 1. The positioning information of the glass plate relative to the cutting base 1 can be transmitted to the controller 2 by the position sensor or manually controlled and input into the controller 2. Correspondingly, the controller 2 is pre-set with the waveform motion trajectory formula of the laser focal point, i.e. formula (1) to formula (3) of the embodiment 1.

[0085] The transmission assembly 4 has a transmission function, which can be a conveying belt, a conveying roller or the like, and specifically, it can transmit the glass plate from the transfer trolley to the cutting base 1 for laser cutting. In this process, it is necessary to ensure that there is no contact with the glass as much as possible, i.e. to avoid direct extrusion, resistance and grabbing of the coated surface and the chemically tempered surface. In the embodiment, the non-coated surface and the non-tempered surface of the glass plate can be automatically supported and transmitted by the conveying belt. It can be easily understood that the driving mechanism of the transmission assembly 4 is signal-connected with the controller 2, and the controller 2 can control the transmission assembly 4 to start or stop to control the transmission of the glass plate. Correspondingly, the control timing of the controller 2 for the transmission assembly 4 can be obtained by the related position sensor or electromagnetic switch or manually controlled and input into the controller 2.

[0086] The connection assembly can move relative to the transmission assembly 4, which can be but is not limited to translation, lifting and the like. It can support the glass plate to separate from the transmission assembly 4 and transfer to the supporting surface 11 of the cutting base 1, so that the transfer and transmission of the glass plate are fully automatic processes, which are not only efficient but also do not need the mechanical arm to grab the glass plate, effectively ensuring the safety of the glass plate. For example, the connection assembly can be arranged at the end of the transmission assembly 4 to receive the glass plate, and then transfer the glass plate to the side of the cutting base 1 through lifting or through translation combined with lifting. For another example, the connection assembly can be arranged in the transmission assembly 4 and can be lifted and translated relative to the transmission assembly 4. After the glass plate is lifted relative to the transmission assembly 4, it is translated to the side of the cutting base 1, and then it is lowered to place the glass plate on the supporting surface 11.

[0087] Further, referring to the accompanying drawings Figure 5 The ultra-thin glass cutting device provided by the embodiment has the following advantages. In the specific implementation, the cutting base 1 is provided with the supporting blocks 13 and the connecting grooves 12 alternately along the width direction of the cutting base 1. The upper surfaces of the supporting blocks 13 are at the same height to form the supporting surface 11. The connecting assembly includes the connecting frame 5. The connecting frame 5 includes the connecting pieces 51 which are arranged at intervals along the width direction of the transferring assembly 4 and are matched with the connecting grooves 12. The connecting frame 5 can lift the glass plate on the transferring assembly 4 according to the connecting instruction, translate to the upper side of the supporting surface 11, drop into the connecting grooves 12 to make the glass plate be supported by the supporting surface 11, and translate back to the side of the transferring assembly 4.

[0088] It can be understood that, in order to comprehensively ensure the safety of the glass plate and realize that the transferring process and the recycling process to the cutting base 1 are both damage-free, the cutting base 1 is provided with the supporting blocks 13 and the connecting grooves 12 alternately in the embodiment. The connecting frame 5 is provided with the connecting pieces 51 which are arranged at intervals. The connecting pieces 51 can fall into or insert into the connecting grooves 12 to support or separate the glass plate. The supporting blocks 13 are rigid structures. The shape thereof is not limited herein and can be a rectangular block, a square block, a circular block or the like. Figure 5The rectangular shape shown can also be any other arbitrary shape, as long as the upper surfaces of the plurality of supporting blocks 13 are flush to form the supporting surface 11; the supporting blocks 13 can be protruding structures formed by additionally bonding or welding on the surface of the cutting base 1 or can be formed by excavating the connecting grooves 12 on the surface of the cutting base 1. In the embodiment, the dimensions of the supporting blocks 13 and the connecting grooves 12 in the width direction of the cutting base 1 can be the same or different, for example, a connecting groove 12 with a width of 150 mm and a depth of 150 mm is arranged every 150 mm, which can be designed and adjusted according to actual needs, and is not limited herein. The connecting member 51 is a rigid structure, which can be a rod-shaped structure or a plate-shaped structure that is adapted to the connecting groove 12. In the embodiment, the controller 2 can control the jacking of the connecting frame 5 relative to the transfer assembly 4 to make the connecting member 51 support the glass plate and make it separate from the support of the transfer assembly 4, then control the translation of the connecting frame 5 to the side of the cutting base 1, after reaching the position, lower the connecting frame 5 to make the glass plate fall on the supporting surface 11, and the connecting member 51 falls into the connecting groove 12 to separate from the glass substrate, completing the transfer of the glass substrate to the cutting base 1; correspondingly, after the glass plate is cut on the cutting base 1, the controller 2 controls the connecting frame 5 to act in reverse to transfer the glass substrate to the transfer assembly 4, which can then be transferred to the breaking process through the transfer assembly 4 or can be transferred to the transfer vehicle through the transfer assembly 4. In the embodiment, a protective film layer can also be attached to the supporting surface 11, which can be but is not limited to Teflon, to avoid scratching or wearing of the glass. The connecting instruction is generated by the controller 2 and sent, for example, the controller 2 can generate and send a connecting instruction to the connecting assembly according to the position of the glass plate, so that the connecting assembly moves relative to the transfer assembly 4.

[0089] Further, with reference to the accompanying drawings Figure 7 In the embodiment, the transfer assembly 4 includes a plurality of conveying belts 41 arranged at intervals in the width direction thereof, and the plurality of conveying belts 41 move synchronously; the plurality of connecting members 51 of the connecting frame 5 and the plurality of conveying belts 41 are alternately arranged in the width direction of the transfer assembly 4, so that the connecting frame 5 can reciprocate relative to the transfer assembly 4 between adjacent conveying belts 41.

[0090] It can be understood that, in order to realize that the docking assembly can be translated and lifted relative to the conveying assembly 4 without affecting the normal movement of the conveying assembly 4, the conveying assembly 4 is arranged in the form of a plurality of spaced conveying belts 41 in the embodiment, and then the docking members 51 can be alternately arranged with the conveying belts 41, the docking members 51 can be lifted between adjacent conveying belts 41, and the movement of the two is avoided. The synchronous driving of the plurality of conveying belts 41 can be realized by the first driving motor 42, the synchronous belt 43, the synchronous wheel 44 and the shaft body 45. The first shaft body 45 and the second shaft body 45 are arranged in parallel and relative to each other. The shaft body 45 is rotatably arranged with a plurality of synchronous wheels 44 along the axial direction thereof. One synchronous wheel 44 (which can also be a separately arranged driving wheel) on the first shaft body 45 is connected to the output end of the first driving motor 42 through the synchronous belt 43. The other synchronous wheels 44 are correspondingly sleeved with the conveying belts 41. When the first driving motor 42 is started, the synchronous wheels 44 rotate around the shaft body 45 to drive the conveying belts 41 to move around the two shaft bodies 45 to realize the conveying of the glass plate. Of course, it can be understood that the synchronous wheels 44 are also arranged in cooperation with bearings. It can be understood that the first driving motor 42 is signal-connected with the controller 2 in the embodiment to realize automatic control start and stop. Therefore, a first position sensor (not shown in the figure) can also be arranged at the feeding end of the conveying assembly 4 in the embodiment. When the transfer trolley carries the glass plate to the feeding end of the conveying assembly 4 or the glass plate is placed on the conveying assembly 4, the first position sensor detects the feeding signal and sends it to the controller 2, and then the controller 2 starts the first driving motor 42 to operate at a preset speed. Correspondingly, a second position sensor (not shown in the figure) and a third position sensor (not shown in the figure) can be arranged at the end of the conveying assembly 4 close to the cutting base 1 in the embodiment. The second position sensor detects the arrival signal of the glass plate, and the third position sensor detects the arrival signal of the docking assembly. The position of the second position sensor can be the starting position of the horizontal movement of the docking assembly, and the position of the third position sensor can be the end position of the horizontal movement of the docking assembly. When the docking assembly is at the starting position of the horizontal movement, the docking member 41 does not extend out of the range of the conveying assembly 4, and when the docking assembly is at the end position of the horizontal movement, the docking member 41 extends out of the range of the conveying assembly 4 and the vertical projection thereof falls entirely within the range of the cutting base 1. Therefore, the positions of the second position sensor and the third position sensor can be adjusted according to the size design of the conveying assembly 4 and the docking member 51, which is not limited herein.Specifically, when the glass plate is conveyed to the edge of the cutting base 1 passing through the second position sensor, the second position sensor sends a signal to the controller 2, at this time the glass plate has not completely entered the supporting area of the adapter assembly, when the glass plate away from the edge of the cutting base 1 passing through the second position sensor, the second position sensor disappears to the controller 2 signal, indicating that the glass plate has completely entered the supporting area of the adapter assembly, at this time the controller 2 controls the first drive motor 42 of the transmission assembly 4 to stop running, and synchronously controls the adapter assembly to be lifted to make the glass plate separate from the conveying belt 41, that is, higher than the transmission assembly 4, and then controls the adapter assembly to translate to the side of the cutting base 1, when the third position sensor detects that the adapter assembly is translated to the position, the controller 2 controls the adapter assembly to stop the translation movement, and controls the adapter assembly to descend to the adapter piece 41 falls into the adapter groove 12, and the glass plate is supported by the supporting surface 11.

[0091] Further, with reference to the accompanying drawings Figure 7 and the accompanying drawings Figure 8 , the ultrathin glass cutting device provided by the embodiment, in specific implementation, the transmission assembly 4 includes a rack 46, and the conveying belt 41 and the adapter assembly are all arranged on the rack 46; the adapter assembly further includes a first base 52 and a first lifting assembly 53; the first base 52 is movably connected with the rack 46, so as to be able to reciprocate relative to the rack 46 along the conveying direction of the transmission assembly 4; the first lifting assembly 53 is connected with the first base 52 at a first end and connected with the adapter frame 5 at a second end, so that the adapter frame 5 can be lifted relative to the first base 52.

[0092] It can be understood that in order to realize the interval arrangement and synchronous driving of the plurality of conveying belts 41, the rack 46 is designed in the embodiment; the rack 46 is a rigid frame structure which can provide stable mounting positions for the first driving motor 42, the synchronous belt 43, the synchronous wheel 44 and the shaft body 45. In the embodiment, the stable mounting of the shaft body 45 and the conveying belt 41 can be realized by the cooperation of the stand column 47 and the guide plate 48. The guide plate 48 corresponds to the conveying belt 41 one by one and serves as the internal support of the conveying belt 41. The guide plate 48 is sleeved outside the conveying belt 41 and stably supports the conveying belt 41, avoiding the problem of unstable conveying caused by the sinking or deformation of the single conveying belt 41. The stand column 47 is arranged at the two ends of the guide plate 48 in a one-to-one correspondence. The stand column 47 serves as the connecting medium between the rack 46 and the guide plate 48. The rack 46, the stand column 47 and the guide plate 48 can be integrally formed or connected by welding, bonding, clamping or the like. Correspondingly, the shaft body 45 can be connected to the side wall of the guide plate 48 or the side wall of the stand column 47 through bearings, so as to ensure the stable arrangement of the shaft body 45 and realize the interval arrangement and synchronous driving of the plurality of conveying belts 41. Figure 8 In order to realize the lifting and translation of the docking assembly relative to the conveying assembly 4, the first base 52 and the first lifting assembly 53 are arranged. The first base 52 is a rigid structure which can be a plate structure, a frame structure, a block structure, a groove structure or the like, as long as it can provide stable support for the first lifting assembly 53 and the docking rack 5. In the embodiment, the first base 52 can reciprocate on the rack 46 along the conveying direction of the conveying belt 41. Here, reference is made to FIG. 2. The first base 52 can be provided with a plurality of first lifting assemblies 53 which are arranged in a one-to-one correspondence. The first lifting assembly 53 can be but not limited to a rodless cylinder 531. The docking rack 5 can be connected to the first lifting assembly 53 through a guide column 56 which is vertically arranged on the first base 52. The docking rack 5 can be connected to the guide column 56 through a sliding rail, a guide rail, a pulley, a sliding groove or a sliding block. The number of the first lifting assemblies 53 can be designed and adjusted according to actual needs. For example, if the width of the docking rack 5 is large, a plurality of first lifting assemblies 53 can be arranged on the first base 52. Figure 8The guide posts 56 are arranged at both ends of the adapter frame 5 to ensure stable lifting. In the embodiment, the control of the lifting of the first lifting assembly 53 to the position can be automatically controlled by the controller 2 using the lifting limit or a position sensor or electromagnetic switch. For example, a rodless cylinder is selected according to the distance between the first base 52 and the upper surface of the conveying belt 41, so that the lifting limit of the rodless cylinder is greater than the distance between the first base 52 and the upper surface of the conveying belt 41, and then only the opening and closing instructions are needed when the rodless cylinder is controlled. For another example, a position sensor or electromagnetic switch can be arranged at the top end of the guide post 56 to detect the lifting of the rodless cylinder to the position.

[0093] Further, with reference to the accompanying drawings Figure 8 The adapter assembly further comprises a second base 57 and a second lifting assembly 58. The second base 57 is connected to the second end of the first lifting assembly 53. The first end of the second lifting assembly 58 is connected to the second base 57, and the second end of the second lifting assembly 58 is connected to the adapter frame 5, so that the adapter frame 5 can be lifted relative to the second base 57.

[0094] It can be understood that, in order to ensure the stability of the lifting of the adapter assembly, the second base 57 and the second lifting assembly 58 are arranged at the second end of the first lifting assembly 53 in the embodiment, which reduces the difficulty of lifting to the position at one time, reduces the risk of failure of the first lifting assembly 53 during long-distance lifting, and at the same time, the depth of the adapter groove 12 can only correspond to the lifting height of the second lifting assembly 58, without corresponding to the entire lifting height of the adapter assembly, which greatly reduces the depth of the adapter groove 12 and reduces the preparation difficulty and cost. The second base 57 is a rigid structure, which can be a plate structure, a frame structure, a block structure, a groove structure, etc., and can be the same as or different from the first base 52, as long as it can provide stable support for the second lifting assembly 58 and the adapter frame 5. The second lifting assembly 58 can be but is not limited to a rodless cylinder, and can be arranged with the guide post 56 as the first lifting assembly 53. The guide post 56 is vertically arranged on the second base 57, and the adapter frame 5 can be slidingly connected with the guide post 56 through a sliding rail, a guide rail, a pulley, a sliding groove, a sliding block, etc. The number of the second lifting assembly 56 can be designed and adjusted according to actual needs. For example, Figure 8The second lifting assembly 56 is arranged corresponding to each adapter 51 to ensure stable lifting, and even if part of the second lifting assembly 56 fails, the normal lifting of the glass plate can still be ensured. In the setting mode, the starting time of the second lifting assembly 56 in the embodiment can be controlled according to the control of the controller 2 on the first lifting assembly 53, for example: when the jacking height of the first lifting assembly 53 is set according to the limit, the controller 2 pre-stores the time when the jacking of the first lifting assembly 53 is completed, and then when the controller 2 controls the first lifting assembly 53 to start jacking, timing or countdown is performed, and after the end, the second lifting assembly 56 is controlled to jacking; the control of the second lifting assembly 56 to the position can use the limit of lifting or use the position sensor or electromagnetic switch to cooperate with the controller 2 for automatic control. The setting can refer to the setting mode of the first lifting assembly 53, and details are not repeated here.

[0095] Further, the ultrathin glass cutting device provided by the embodiment further comprises a controller 2, a first driving part and a second driving part; the first driving part is used for driving the transmission assembly 4 according to a first driving instruction; the second driving part is used for driving the adapter assembly according to a second driving instruction; the controller 2 is signal connected with the first driving part and the second driving part, so as to respectively send the first driving instruction and the second driving instruction to the first driving part and the second driving part according to a starting instruction.

[0096] It can be understood that the first driving part is the first driving motor 42, the second driving part is the second driving motor 54, the first lifting assembly 53 and the second lifting assembly 58, the first driving instruction is the control instruction of the first driving motor 42 generated by the controller 2 after the first position sensor sends the feeding signal to the controller 2, so that the transmission assembly 4 starts to transmit, the second driving instruction is the control instruction of the jacking and translation of the adapter assembly generated by the controller 2 after the second position sensor sends the to-position signal to disappear, and the second driving instruction is the same instruction as the adapter instruction; the starting instruction is a signal of artificially starting the controller 2 and the power supply of the whole device.

[0097] It can be understood that the whole process of the ultrathin glass cutting device provided by the embodiment is as follows:

[0098] The first position sensor sends an incoming signal to the controller 2, the controller 2 controls the first drive motor 42 of the transmission assembly 4 to drive the synchronous wheel 44 and the transmission belt 41 to rotate around the shaft body 51 to realize the transmission of the glass plate, when the second position sensor continuously sends an in-place signal to the disappearance of the in-place signal, the controller 2 can stop the first drive motor 42, synchronously control the first lifting assembly 53 to lift the second base 57 and the adapter 5, after the first lifting assembly 53 is lifted to the position, control the second lifting assembly 56 to lift the adapter 5 so that the glass plate is higher than the transmission belt 41 and is separated from the support of the transmission belt 41, after the second lifting assembly 56 is lifted to the position, control the second drive motor 54 to make the first base 52 can drive the adapter 5 to translate along the drive lead screw 55 to the direction of the cutting base 1, when the third position sensor sends an in-place signal to the controller 2, the controller 2 controls the second drive motor 54 to stop, synchronously controls the second lifting assembly 56 to descend until the adapter 51 falls into the adapter groove 12, the glass plate is supported by the supporting surface 11, the controller 2 controls the second drive motor 54 to reversely drive the drive lead screw 55 to make the adapter 5 translate to the direction of the transmission assembly 4 and separate from the cutting base 1 area, wait for the cutting to be completed, in this process, the third position sensor and the second position sensor can be reversely used, which will not be described here; the controller 2 connected to the second position sensor sends a control instruction to the laser emitting assembly 3 to make the laser emitting assembly 3 cut the glass plate according to the formula (1)-(3) described in embodiment 1; after the cutting is completed, the controller 2 controls the second drive motor 54 to start to make the adapter 5 translate to the direction of the cutting base 1 and make the adapter 51 insert into the adapter groove 12, then the controller 2 drives the second lifting assembly 56 to lift again to make the glass plate cutted completed be supported by the adapter 5, then reversely translate the adapter 5 to make the glass plate return to the side of the transmission assembly 4, then reversely drive the second lifting assembly 56 and the first lifting assembly 53 to make the glass plate be supported by the transmission belt 41 again, then drive the first drive motor 42 to reversely drive the synchronous wheel to reversely transmit the glass plate, complete the whole transmission and cutting process.

[0099] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for cutting ultra-thin glass, characterized in that, The method comprises: delivering the glass plate to a cutting base; adjusting the focal point of the laser according to formula (1) to cut the glass plate, so that the focal point of the laser moves up and down in a wave shape along the thickness direction of the glass plate with the midpoint of the thickness direction as the reference point in any straight line direction parallel to the plate surface of the glass plate （1） In the formula: h is a longitudinal coordinate value of the laser focal point in the base coordinate system; h is the thickness of the glass plate, h≤2mm; x is a transverse coordinate value of the laser focal point in the moving direction in the base coordinate system; the X direction in the base coordinate system is the horizontal movement direction when the laser emitting assembly cuts the glass plate, and the Y direction is the movement direction of the focal point when the laser emitting assembly cuts the glass plate, which is also the thickness direction of the glass; m is a constant related to the glass plate, 5≤m≤500; 1 / m is the maximum distance of the laser focal point moving up and down based on h / 2; for the glass plate that is concave downward corresponding to the part affected by gravity, formula (3) is obtained according to formula (1) and formula (2), and the focal point of the laser is adjusted according to formula (3); （2） Y=y+α (3) In the formula: y is the longitudinal coordinate value of the lower surface of the glass plate in the coordinate system of the base; r is the radius of the circular arc of the gravity sag of the glass plate; is the distance from the lowest point of the gravity sag of the glass plate to the upper surface of the base; x is the horizontal coordinate value of the laser focal point in the moving direction of the coordinate system of the base; n is the n th gravity sag position of the glass plate; is the width of the gravity sag of the glass plate; is the base bearing width between adjacent glass plate sag positions; Y is the longitudinal coordinate value of the glass plate corresponding to the sag in the coordinate system of the base the glass plate after the cutting of the splinter.

2. An ultrathin glass cutting device based on the ultrathin glass cutting method of claim 1, characterized in that, The method comprises: a cutting base having a supporting surface for supporting the glass plate; a laser emitting assembly arranged above the supporting surface and spaced from the supporting surface to emit cutting laser to the supporting surface according to control instructions; the focal point of the laser moves in a wave shape along the thickness direction of the glass plate in any straight line direction parallel to the plate surface of the glass plate; a delivery assembly arranged in sequence with the cutting base for delivering the glass plate between the transfer trolley and the cutting base; a connection assembly movably arranged on the delivery assembly, the connection assembly can reciprocate relative to the delivery assembly along the delivery direction, and the connection assembly can reciprocate relative to the delivery assembly along the direction perpendicular to the delivery surface of the delivery assembly to reciprocate the glass plate between the delivery assembly and the supporting surface; a first driving part for driving the delivery assembly according to a first driving instruction; a second driving part for driving the connection assembly according to a second driving instruction; a controller connected with the first driving part and the second driving part to send the first driving instruction and the second driving instruction to the first driving part and the second driving part respectively according to start-up instructions.

3. The ultra-thin glass cutting device according to claim 2, characterized in that: the cutting base is alternately provided with supporting blocks and connection grooves along the width direction thereof, the upper surfaces of the supporting blocks are at the same height to form the supporting surface; the connection assembly comprises a connection frame comprising a plurality of connection members arranged at intervals along the width direction of the delivery assembly, the connection members are matched with the connection grooves; wherein the connection frame can lift the glass plate on the delivery assembly according to connection instructions, translate to above the supporting surface, descend into the connection grooves to make the glass plate be supported by the supporting surface, and translate back to the side of the delivery assembly.

4. The ultra-thin glass cutting device according to claim 3, characterized in that: the delivery assembly comprises a plurality of conveying belts arranged at intervals along the width direction thereof, and the conveying belts move synchronously; the connection members of the connection frame and the conveying belts are alternately arranged in the width direction of the delivery assembly, so that the connection frame can reciprocate relative to the delivery assembly between adjacent conveying belts.

5. The ultra-thin glass cutting device according to claim 4, characterized in that: the delivery assembly comprises a frame, and the conveying belts and the connection assembly are arranged on the frame. The docking assembly further comprises a first base and a first lifting assembly; The first base is movably connected with the rack, and the first base is capable of reciprocating relative to the rack along a conveying direction of the conveying assembly; A first end of the first lifting assembly is connected with the first base, and a second end of the first lifting assembly is connected with the docking rack, so that the docking rack is capable of lifting relative to the first base.

6. The ultrathin glass cutting device according to claim 5, characterized in that: The docking assembly further comprises a second base and a second lifting assembly; The second base is connected with the second end of the first lifting assembly; A first end of the second lifting assembly is connected with the second base, and a second end of the second lifting assembly is connected with the docking rack, so that the docking rack is capable of lifting relative to the second base.

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