Real-time pressure feedback mechanism for glass breakage and chipper head

Abstract

The present application relates to the technical field of glass breaking, in particular to a real-time pressure feedback mechanism for glass breaking and a broken piece cutter head, which mainly solves the technical problems that the existing breaking pressure detection method cannot obtain the pressure state of all breaking positions, the collection of pressure information has hysteresis, and the accuracy of obtained pressure is difficult to guarantee. The real-time pressure feedback mechanism comprises a guide assembly, an upper mounting strip plate, a lower mounting strip plate, a pressure gauge and a pressure cutter. The upper mounting strip plate and the lower mounting strip plate are respectively mounted on two sliders of the same guide rail and connected through the pressure gauge. A preset damping is applied on the upper mounting strip plate during breaking. Since the upper mounting strip plate and the lower mounting strip plate can only slide vertically relative to each other, the pressure borne by the lower mounting strip plate can be accurately transmitted to the pressure gauge. The broken piece cutter head further comprises a fixing frame, a Z-direction driving pair, a mounting plate and a gas cylinder. The preset pressure value of the gas cylinder can ensure the consistency of breaking pressure each time, which is more conducive to ensuring product quality.

Description

Technical Field

[0001] This invention relates to the field of glass fracture technology, and in particular to a real-time pressure feedback mechanism and a glass cleaver for glass fracture. Background Technology

[0002] With the continuous iteration and upgrading of flat panel display technology, large-screen operation has become increasingly popular, and large-screen displays are being used more and more in daily life, becoming increasingly integrated with people's lives. This has greatly promoted the improvement of TFT-LCD liquid crystal display technology and production volume. In order to improve production efficiency, reduce manufacturing costs, and achieve mass production, multiple liquid crystal displays are often fabricated on a large glass substrate.

[0003] Large-size glass substrate cutting and breaking production lines primarily complete the task of cutting large glass substrates into small LCD display units. The production line mainly includes two processes: cutting and breaking. The process flow includes cutting the TFT side of the glass, breaking the CF side of the glass, cutting the CF side again, breaking the TFT side of the glass, removing dummy strips, and inspecting for dummy strips. Among these, the breaking process directly affects the yield and quality of the LCD display and is a crucial step in panel processing. During breaking, a certain pressure is applied to the outside of the glass substrate to increase the stress at the vertical crack tip, accelerate crack propagation, and shorten the time required for glass separation, thus achieving the purpose of splitting. Therefore, the magnitude of the breaking pressure and the stability of the breaking pressure output are of paramount importance.

[0004] The current method for detecting fracture pressure involves mounting a pressure gauge on an adsorption platform. Pressure data at one location can be acquired and fed back during pressure calibration and parameter setting. However, this method has the following drawbacks: First, the glass substrate has multiple cutting lines, and a single-sided fracture will result in multiple cleavage points, making it impossible to accurately reflect the pressure status at other locations using pressure data from a single point. Second, because only pressure at one location can be detected, pressure data from other locations cannot be acquired in real time. If the actual pressure is inappropriate, the system must be stopped for calibration, resulting in a lag in pressure information acquisition. Third, the pressure gauge mounted on the adsorption platform may shift position under the impact of the cleaving blade, interfering with pressure acquisition settings, affecting the accuracy of pressure acquisition, leading to defective cleavage, and ultimately impacting product quality. Therefore, a new pressure feedback mechanism is needed to overcome these shortcomings. Summary of the Invention

[0005] To overcome the technical shortcomings of existing fracture pressure detection methods, such as the inability to obtain the pressure status at all fracture locations, the lag in pressure information acquisition, and the difficulty in guaranteeing the accuracy of pressure acquisition, this invention provides a real-time pressure feedback mechanism and a glass cleaver for glass fracture.

[0006] The real-time pressure feedback mechanism for glass breakage provided by this invention includes:

[0007] A guide assembly, comprising a Z-axis arranged guide rail and an upper slider and a lower slider slidably connected to the guide rail;

[0008] An upper mounting strip is arranged along the X-direction and connected to the upper slider;

[0009] A lower mounting strip is arranged along the X-direction and connected to the lower slider;

[0010] A pressure gauge is connected between the upper mounting plate and the lower mounting plate;

[0011] The pressure knife is fixed to the lower end of the lower mounting plate.

[0012] Optionally, the guide assembly is provided in multiple groups and distributed at intervals along the X direction, the upper mounting strip is connected to the upper slider of all groups of guide assemblies, and the lower mounting strip is connected to the lower slider of all groups of guide assemblies.

[0013] Optionally, the pressure gauges are provided in at least two and spaced apart along the X direction.

[0014] Optionally, it also includes a chip baffle plate connected to the lower end of the lower mounting strip, wherein two chip baffle plates are provided and are respectively located on both sides of the pressure knife in the Y direction.

[0015] The glass cleaver provided by this invention includes the aforementioned real-time pressure feedback mechanism for glass fracture, and further includes:

[0016] Fixture;

[0017] Z-axis drive pair, the fixed part of which is connected to the fixed frame;

[0018] The mounting plate is connected to the sliding part of the Z-axis drive pair, and the guide rail is connected to the mounting plate;

[0019] A cylinder, the cylinder body of which is connected to the mounting plate and the piston rod of which is connected to the upper mounting strip.

[0020] Optionally, the fixing frame includes two support seats and a crossbeam connected to the two support seats.

[0021] Optionally, the Z-axis drive pair is a motor lead screw pair, and the nut of the motor lead screw pair is connected to the mounting plate.

[0022] Optionally, the cylinders are provided in multiples and distributed at intervals along the X direction.

[0023] Optionally, the piston rod of the cylinder is connected to the upper mounting plate via a floating joint.

[0024] Optionally, the mounting plate is provided with a support block, and the upper mounting strip is provided with a window corresponding to the position of the support block. The support block is placed in the window and a certain amount of movement is reserved to avoid the cylinder retraction.

[0025] The technical solution provided by this invention has the following advantages compared with the prior art:

[0026] The real-time pressure feedback mechanism for glass fracture provided by this invention has an upper mounting plate and a lower mounting plate respectively mounted on two sliders of the same guide rail and connected by a pressure gauge. Upon fracture, a preset damping is applied to the upper mounting plate. Since the upper and lower mounting plates can only slide vertically relative to each other, the pressure borne by the lower mounting plate can be accurately transmitted to the pressure gauge. This mechanism can collect and feedback fracture pressure in real time via the pressure gauge without requiring machine downtime for debugging, thus solving the problem of lag in pressure information collection and promptly avoiding glass breakage defects caused by pressure changes. Because the pressure gauge is integrated into the glass breaking mechanism and moves with it in real time, it solves the problem of pressure data location being singular, enabling the acquisition of pressure states at all fracture locations, while also preventing pressure gauge position deviation and ensuring the accuracy of pressure information. Furthermore, this mechanism can also use the pressure state of the pressure cutter to provide feedback on relevant process parameters of the glass breaking mechanism, addressing the uniformity and stability of the glass breaking pressure.

[0027] The glass cleaver provided by this invention has the aforementioned advantages due to its real-time pressure feedback mechanism for glass breakage. Furthermore, this glass cleaver mounts a guide rail on a mounting plate, and a cylinder connected to a mounting strip is installed on the mounting plate. When the Z-axis drive unit moves the mounting plate downwards until the cleaver contacts the product surface, the pressure gauge reading continuously increases. At this point, as the Z-axis drive unit continues to move the mounting plate downwards, the cleaver is blocked by the product, the cylinder retracts, and the pressure gauge reading reaches its maximum and remains constant. Thus, by pre-setting the cylinder pressure value, the consistency of the breaking pressure can be ensured each time, which is more conducive to ensuring product quality. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a front view of the real-time feedback mechanism in an embodiment of the present invention;

[0031] Figure 2 This is a side view of the real-time feedback mechanism in an embodiment of the present invention.

[0032] Figure 3 This is a front view of the dicing blade in an embodiment of the present invention;

[0033] Figure 4 This is a side view of the dicing blade in an embodiment of the present invention.

[0034] In the picture:

[0035] 110. Guide assembly; 111. Guide rail; 112. Upper slider; 113. Lower slider; 120. Upper mounting plate; 121. Window; 130. Lower mounting plate; 140. Pressure gauge; 150. Pressure knife; 160. Chip baffle; 200. Fixture; 210. Support base; 220. Crossbeam; 300. Z-axis drive pair; 400. Mounting plate; 500. Cylinder; 600. Floating joint; 700. Support block; 800. Pressure reducing valve; 900. Electro-proportional valve. Detailed Implementation

[0036] To better understand the above-mentioned objectives, features, and advantages of the present invention, the solutions of the present invention will be further described below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0037] In this description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. It should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0038] Many specific details are set forth in the following description in order to provide a full understanding of the invention, but the invention may also be practiced in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the invention, and not all embodiments.

[0039] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Example 1

[0040] Reference Figure 1 and Figure 2 This embodiment provides a real-time pressure feedback mechanism for glass breakage, including a guide assembly 110, an upper mounting plate 120, a lower mounting plate 130, a pressure gauge 140, and a pressure knife 150.

[0041] The guide assembly 110 includes a Z-axis arranged guide rail 111 and an upper slider 112 and a lower slider 113 that are slidably connected to the guide rail 111.

[0042] Specifically, in this embodiment, the guide components 110 are provided in multiple sets and distributed at intervals along the X direction. The upper mounting plate 120 is connected to the upper slider 112 of all the guide components 110, and the lower mounting plate 130 is connected to the lower slider 113 of all the guide components 110. Multiple sets of guide components 110 can improve the movement accuracy of the upper mounting plate 120. The number of guide components 110 is not limited; for example, in this embodiment, the guide components 110 are provided in four sets.

[0043] The upper mounting strip 120 is arranged along the X direction in the length direction and is connected to the upper slider 112.

[0044] The lower mounting strip 130 is arranged along the X-direction in the length direction and is connected to the lower slider 113.

[0045] The pressure gauge 140 is connected between the upper mounting plate 120 and the lower mounting plate 130.

[0046] It is easy to understand that the pressure gauge 140 is a mature structure in this field, capable of converting pressure signals into electronic signals.

[0047] Specifically, in this embodiment, at least two pressure gauges 140 are provided and distributed at intervals along the X direction. Since the pressure knife 150 is elongated, detection is performed by multiple pressure gauges 140. Finally, the average value of the detection values ​​from multiple pressure gauges 140 is taken, or other processing that can reduce errors is performed, thereby improving the detection accuracy. The number of pressure gauges 140 is not limited; for example, in this embodiment, two pressure gauges 140 are provided.

[0048] The pressure knife 150 is fixed to the lower end of the lower mounting plate 130.

[0049] Specifically, in this embodiment, the lower mounting plate 130 is provided with a Z-shaped groove, and the connecting rod of the pressure knife 150 is embedded in the groove to achieve relative fixation between the pressure knife 150 and the lower mounting plate 130.

[0050] It is easy to understand that, in order to avoid damaging the glass substrate with the pressure knife 150, the pressure knife 150 is made of polyurethane material.

[0051] Furthermore, the real-time pressure feedback mechanism in this embodiment also includes a chip baffle 160 connected to the lower end of the lower mounting strip 130. Two chip baffles 160 are provided and are respectively located on both sides of the pressure knife 150 in the Y direction. The chip baffles 160 can block the splashing of glass fragments when the glass breaks, thus protecting the surface of the glass substrate. Example 2

[0052] Reference Figure 3 and Figure 4 This embodiment provides a glass shattering head, including the real-time pressure feedback mechanism for glass breakage in Embodiment 1, and also includes a fixing frame 200, a Z-axis drive pair 300, a mounting plate 400 and a cylinder 500.

[0053] The mounting bracket 200 is mainly used to provide hardware support for other components.

[0054] Specifically, the fixing frame 200 in this embodiment includes two support bases 210 and a crossbeam 220 connected to the two support bases 210. The combined structure of the crossbeam 220 and the support bases 210 is not easily deformed, which can ensure the installation accuracy and movement accuracy of the structure.

[0055] The fixing part of the Z-axis drive pair 300 is connected to the fixing frame 200.

[0056] Specifically, in this embodiment, the Z-axis drive pair 300 is a motor lead screw pair, and the nut of the motor lead screw pair is connected to the mounting plate 400. The motor lead screw pair is a mature structure in the field, which includes a servo motor, a screw, a guide rod, and a nut. The output shaft of the servo motor rotates, driving the screw to rotate, so that the nut can slide along the guide rod under the limiting action of the guide rod, thereby realizing the output of linear displacement.

[0057] The mounting plate 400 is connected to the sliding part of the Z-axis drive pair 300, and the guide rail 111 is connected to the mounting plate 400. When the sliding part of the Z-axis drive pair 300 moves in the Z-axis direction, it drives the mounting plate 400 and its components to move up and down in the Z-axis direction.

[0058] Furthermore, in the initial stage of debugging and installation, to prevent the upper mounting plate 120 from falling in the Z-direction, this embodiment adds a support block 700 to the mounting plate 400. A window 121 is provided at the position of the upper mounting plate 120 corresponding to the support block 700. The support block 700 is placed in the window 121 with a reserved amount of movement to prevent the cylinder 500 from retracting. The upper mounting plate 120 is connected to the guide rail 111 via the upper slider 112. Therefore, the support block 700, in conjunction with the window 121, can hold and support the upper mounting plate 120, effectively preventing it from falling in the Z-direction and facilitating debugging and installation. Since the cylinder 500 will retract upon breakage, there is a relative displacement in the Z-direction between the upper mounting plate 120 and the mounting plate 400. Therefore, a reserved amount of movement is needed between the support block 700 and the window 121, i.e., the window 121 is larger than the support block 700, to avoid interference with the retraction of the cylinder 500.

[0059] The cylinder body of cylinder 500 is connected to mounting plate 400 and the piston rod is connected to upper mounting strip 120.

[0060] Specifically, multiple cylinders 500 are provided and distributed at intervals along the X direction. Multiple cylinders 500 can ensure the uniformity of force on the upper mounting plate 120. The number of cylinders 500 is not limited; for example, in this embodiment, there are six cylinders 500.

[0061] Specifically, the piston rod of cylinder 500 is connected to the upper mounting plate 120 via a floating joint 600. During installation, the floating joint 600 has a certain degree of freedom, which can compensate for structural jamming caused by installation errors of related components and reduce the difficulty of installation. After installation, the floating joint 600 loses its degree of freedom under the limit of the guide assembly 110 and will not affect the movement of the mechanism.

[0062] It should be noted that a pressure reducing valve 800 and an electro-proportional valve 900 need to be connected sequentially between the air source and the cylinder 500. The pressure reducing valve 800 can reduce and limit the air pressure of the air source to ensure that the pressure value input to the cylinder 500 is constant, and the electro-proportional valve 900 can control and adjust the preset pressure of the cylinder 500.

[0063] The working principle of the dicing cutter head in this embodiment is as follows:

[0064] After the cutting process is completed, the adsorption platform adsorbs the glass substrate and moves it in the Y direction. When the vision system recognizes that the glass substrate is in place, the Z-axis drive unit 300 is activated to drive the mounting plate 400 downward. At this time, the cylinder 500 extends to its maximum length under the action of the preset pressure. When the pressure knife 150 contacts the surface of the glass substrate, the pressure gauge 140 reads zero. Through the stroke setting of the Z-axis drive unit 300, the mounting plate 400 is controlled to continue to move downward a small distance, and the reading of the pressure gauge 140 gradually increases. When the breaking pressure increases to the point that it can resist the preset pressure of the cylinder 500, the cylinder 500 retracts. At this time, the reading of the pressure gauge 140 is at its maximum and remains unchanged. The glass substrate is broken at this breaking pressure. After one cutting line is broken, the adsorption platform drives the glass substrate to move in the Y direction to the next cutting line. The operation is repeated until all cutting lines are broken.

[0065] It should be noted that the pressure gauge 140 has two main functions: firstly, it can be used to provide feedback on the system status. For example, if the preset pressure of cylinder 500 is 10N, but the final breaking pressure of cylinder 500 when it retracts is only 1N, then there must be a fault in the system components. Secondly, based on the reading of the pressure gauge 140 and the process requirements of the glass substrate, the preset pressure of cylinder 500 can be determined in reverse, thereby ensuring the accuracy of the breaking pressure.

[0066] It is easy to understand that, ideally, the preset pressure of cylinder 500 should be applied entirely to the pressure knife 150. However, there is friction between the cylinder body and piston rod of cylinder 500, and there is also friction between the components of guide assembly 110. Furthermore, the aforementioned friction values ​​may not be the same when the preset pressure of cylinder 500 is different. Therefore, the force finally applied to the pressure knife 150 is not predictable. However, the force of the pressure knife 150 can be visualized by pressure gauge 140 without considering the complex force action in the middle. It can intuitively show the correspondence between the preset pressure of cylinder 500 and the final output force of pressure knife 150, which is more conducive to the control of fracture pressure.

[0067] The above are merely specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Although detailed descriptions have been provided with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments, and they should all be covered within the protection scope of the claims.

Claims

1. A slicing blade, characterized in that, The system includes a real-time pressure feedback mechanism for glass breakage, the real-time pressure feedback mechanism for glass breakage comprising: The guide assembly (110) includes a Z-axis arranged guide rail (111) and an upper slider (112) and a lower slider (113) slidably connected to the guide rail (111). An upper mounting strip (120) is arranged along the X direction in its length direction and connected to the upper slider (112); A lower mounting strip (130) is arranged along the X direction in its length direction and connected to the lower slider (113); A pressure gauge (140) is connected between the upper mounting plate (120) and the lower mounting plate (130); A pressure knife (150) is fixed to the lower end of the lower mounting strip (130); The guide assembly (110) is provided in multiple groups and is distributed at intervals along the X direction. The upper mounting strip (120) is connected to the upper slider (112) of all the guide assemblies (110), and the lower mounting strip (130) is connected to the lower slider (113) of all the guide assemblies (110). The dicing tool also includes: Fixture (200); Z-axis drive pair (300), the fixed part of which is connected to the fixed frame (200); Mounting plate (400) is connected to the sliding part of the Z-axis drive pair (300), and guide rail (111) is connected to the mounting plate (400); A cylinder (500) has its cylinder body connected to the mounting plate (400) and its piston rod connected to the upper mounting strip (120).

2. The dicing blade according to claim 1, characterized in that, The fixing frame (200) includes two support bases (210) and a crossbeam (220) connected to the two support bases (210).

3. The dicing blade according to claim 1, characterized in that, The Z-axis drive pair (300) is a motor lead screw pair, and the nut of the motor lead screw pair is connected to the mounting plate (400).

4. The dicing blade according to claim 1, characterized in that, The cylinder (500) is provided in multiple units and is distributed at intervals along the X direction.

5. The dicing blade according to claim 4, characterized in that, The piston rod of the cylinder (500) is connected to the upper mounting plate (120) via a floating joint (600).

6. The dicing blade according to any one of claims 1 to 5, characterized in that, The mounting plate (400) is provided with a support block (700), and the upper mounting strip (120) is provided with a window (121) corresponding to the position of the support block (700). The support block (700) is placed in the window (121) and a margin of movement is reserved to avoid the retraction of the cylinder (500).

7. The dicing blade according to claim 1, characterized in that, The pressure gauge (140) is provided in at least two and is spaced apart along the X direction.

8. The dicing blade according to claim 1 or 7, characterized in that, It also includes a chip baffle (160) connected to the lower end of the lower mounting strip (130), the chip baffle (160) having two pieces and located on both sides of the pressure knife (150) in the Y direction.

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