Real-time pressure feedback mechanism for glass breakage and splitting cutter head

Abstract

The invention relates to the technical field of glass fracture, in particular to a real-time pressure feedback mechanism for glass fracture and a splitting cutter head. The technical problems that in an existing fracture pressure detection mode, the pressure states of all fracture positions cannot be obtained, pressure information collection is hysteretic, and the pressure obtaining accuracy is difficult to guarantee are mainly solved. The real-time pressure feedback mechanism comprises a guide assembly, an upper mounting batten, a lower mounting batten, a pressure gauge and a pressing cutter, the upper mounting batten and the lower mounting batten are mounted on two sliding blocks of the same guide rail respectively and connected through the pressure gauge, and preset damping is applied to the upper mounting batten during breakage; the upper mounting batten and the lower mounting batten can only slide vertically relative to each other, so that the pressure borne by the lower mounting batten can be accurately transmitted to the pressure gauge. The splitting tool bit is further provided with the fixing frame, the Z-direction driving pair, the mounting plate and the air cylinder, the consistency of the breaking pressure every time can be guaranteed by presetting the pressure value of the air cylinder, and the product quality can be better guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of glass fracture, and in particular to a real-time pressure feedback mechanism for glass fracture and a splitting blade head. Background Art

[0002] With the continuous iteration and upgrading of flat panel display technology, large-screen operation is favored by people. Large-screen display is increasingly used in daily life and has a closer relationship with people. This has greatly promoted the improvement of TFT-LCD liquid crystal display technology and output. In order to improve production efficiency, reduce manufacturing costs, and form large-scale mass production, multiple liquid crystal displays are often made on a larger glass substrate.

[0003] The large-size glass substrate cutting and breaking production line mainly completes the task of cutting large glass substrates into small LCD display units. The glass substrate cutting and breaking production line mainly includes two processes: cutting and breaking. Its process flow is cutting the glass TFT surface, breaking the glass CF surface, cutting the glass CF surface, breaking the glass TFT surface, removing the Dummy strip, and detecting the Dummy strip. Among them, the breaking process directly affects the yield and quality of the LCD display, and is a very important link in panel processing. When breaking, a certain pressure is applied to the outside of the glass substrate to increase the stress at the end of the vertical crack, accelerate the expansion of the crack, and shorten the time required for glass separation, thereby achieving the purpose of splitting. Therefore, the size of the breaking pressure and whether the breaking pressure output is stable are crucial.

[0004] The existing detection of fracture pressure adopts the following method: a pressure gauge is installed on the adsorption platen, and the pressure data collection and feedback of one position can be completed during pressure calibration and parameter setting. However, this method has the following defects: First, there are multiple cutting lines on the glass substrate, and the fracture of a single-sided glass substrate will cause cracks in multiple positions. The pressure state of the remaining positions cannot be accurately reflected by the pressure data of one position; second, since the pressure at only one position can be detected, the pressure data of other positions cannot be obtained in real time. If the actual pressure is inappropriate, the machine can only be stopped for detection and calibration, and the collection of pressure information has a lag; third, the pressure gauge installed on the adsorption platen may be displaced under the impact of the cracking knife, thereby interfering with the pressure collection setting, affecting the accuracy of the pressure acquisition, resulting in poor cracking, and thus affecting the product quality. Therefore, it is necessary to design a new pressure feedback mechanism to overcome the above-mentioned defects. Summary of the invention

[0005] In order to overcome the technical defects of the existing fracture pressure detection method, such as the inability to obtain the pressure status of all fracture positions, the lag in collecting pressure information, and the difficulty in ensuring the accuracy of the obtained pressure, the present invention provides a real-time pressure feedback mechanism for glass fracture and a splitting knife head.

[0006] The real-time pressure feedback mechanism for glass breakage provided by the present invention comprises: A guide assembly, comprising a guide rail arranged in the Z direction and an upper slider and a lower slider both slidably connected to the guide rail; An upper mounting strip plate, the length direction of which is arranged along the X direction and connected to the upper slider; A lower mounting strip, the length direction of which is arranged along the X direction and connected to the lower slider; a pressure gauge connected between the upper mounting strip and the lower mounting strip; A pressing knife is fixed to the lower end of the lower mounting strip.

[0007] Optionally, the guide assembly is provided in multiple groups and is spaced apart along the X direction, the upper mounting strip is connected to the upper sliders of all groups of guide assemblies, and the lower mounting strip is connected to the lower sliders of all groups of guide assemblies.

[0008] Optionally, at least two pressure gauges are provided and are spaced apart along the X direction.

[0009] Optionally, it also includes a chip guard plate connected to the lower end of the lower mounting strip, wherein two chip guard plates are provided and are respectively located on both sides of the press knife in the Y direction.

[0010] The splitting blade provided by the present invention includes the aforementioned real-time pressure feedback mechanism for glass breakage, and further includes: Fixed frame; A Z-direction driving pair, the fixing portion of which is connected to the fixing frame; A mounting plate connected to the sliding portion of the Z-direction drive pair, and the guide rail is connected to the mounting plate; The cylinder has a cylinder body connected to the mounting plate and a piston rod connected to the upper mounting strip plate.

[0011] Optionally, the fixing frame includes two supporting seats and a crossbeam connected to the two supporting seats.

[0012] Optionally, the Z-axis driving pair is a motor screw pair, and the nut member of the motor screw pair is connected to the mounting plate.

[0013] Optionally, the cylinder is provided in plurality and is spaced apart and distributed along the X direction.

[0014] Optionally, the piston rod of the cylinder is connected to the upper mounting strip via a floating joint.

[0015] Optionally, a support block is provided on the mounting plate, and a window is provided on the upper mounting strip at a position corresponding to the support block. The support block is placed in the window and a margin of movement is reserved to avoid retraction of the cylinder.

[0016] The technical solution provided by the present invention has the following advantages compared with the prior art: The real-time pressure feedback mechanism for glass fracture provided by the present invention has an upper mounting strip and a lower mounting strip respectively mounted on two sliders of the same guide rail and connected by a pressure gauge. When the glass fractures, a preset damping is applied to the upper mounting strip. Since the upper mounting strip and the lower mounting strip can only slide vertically relative to each other, the pressure borne by the lower mounting strip can be accurately transmitted to the pressure gauge. The mechanism can collect and feedback the fracture pressure in real time through the pressure gauge, without the need for shutdown for debugging, thus solving the lag in pressure information collection and timely avoiding the splinter defects caused by pressure changes; since the pressure gauge is integrated on the splinter mechanism and moves in real time with the splinter mechanism, the singleness of the pressure data position is solved, and the pressure state of all fracture positions can be obtained. At the same time, the position deviation of the pressure gauge is also avoided, thus ensuring the accuracy of the pressure information. In addition, the mechanism can also feedback the relevant process parameters of the splinter mechanism through the pressure state of the pressure knife, thus solving the uniformity and stability of the splinter pressure.

[0017] The splitting blade head provided by the present invention has the aforementioned advantages because it has the aforementioned real-time pressure feedback mechanism for glass fracture. In addition, the splitting blade head installs the guide rail on the mounting plate, and installs a cylinder connected to the mounting strip on the mounting plate. When the Z-direction drive pair drives the mounting plate to move downward until the pressure blade contacts the product surface, the pressure gauge reading increases continuously. At this time, when the Z-direction drive pair continues to drive the mounting plate downward, the pressure blade is blocked by the product, the cylinder retracts, and the pressure gauge reading is the maximum and remains unchanged. In this way, the pressure value of the cylinder is preset to ensure the consistency of the fracture pressure each time, which is more conducive to ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A front view showing a real-time feedback mechanism in an embodiment of the present invention; Figure 2 A side view showing a real-time feedback mechanism in an embodiment of the present invention Figure 3 A front view of a split cutter head according to an embodiment of the present invention is shown; Figure 4A side view of a splitter head according to an embodiment of the present invention is shown.

[0021] In the figure: 110. Guide assembly; 111. Guide rail; 112. Upper slider; 113. Lower slider; 120. Upper mounting strip; 121. Window; 130. Lower mounting strip; 140. Pressure gauge; 150. Press knife; 160. Chip guard plate; 200. Fixed bracket; 210. Support seat; 220. Crossbeam; 300. Z-axis drive pair; 400. Mounting plate; 500. Cylinder; 600. Floating joint; 700. Support block; 800. Pressure reducing valve; 900. Electric proportional valve. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0023] In the description, it should be noted that the terms "first" and "second" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Example 1

[0026] 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 .

[0027] The guide assembly 110 includes a guide rail 111 arranged in the Z direction and an upper slider 112 and a lower slider 113 both slidably connected to the guide rail 111 .

[0028] Specifically, the guide assembly 110 of this embodiment is provided with multiple groups and is spaced apart along the X direction, the upper mounting strip 120 is connected to the upper slider 112 of all the groups of the guide assembly 110, and the lower mounting strip 130 is connected to the lower slider 113 of all the groups of the guide assembly 110. Multiple groups of guide assemblies 110 can improve the movement accuracy of the upper mounting strip 120. The number of groups of the guide assembly 110 is not limited, for example, in this embodiment, the guide assembly 110 is provided with four groups.

[0029] The length direction of the upper mounting strip 120 is arranged along the X direction and is connected to the upper sliding block 112 .

[0030] The length direction of the lower installation strip 130 is arranged along the X direction and is connected to the lower sliding block 113 .

[0031] The pressure gauge 140 is connected between the upper mounting strip 120 and the lower mounting strip 130 .

[0032] It is easy to understand that the pressure gauge 140 is a mature structure in the art and can convert pressure signals into electronic signals.

[0033] Specifically, at least two pressure gauges 140 are provided in this embodiment and are spaced apart along the X direction. Since the pressure blade 150 is in the shape of a long strip, multiple pressure gauges 140 are used for detection, and finally the average value is taken according to the detection values ​​of the multiple pressure gauges 140 or other processing that can reduce the error is performed, so as to improve the detection accuracy. The number of pressure gauges 140 is not limited. For example, in this embodiment, two pressure gauges 140 are provided.

[0034] The pressing blade 150 is fixed to the lower end of the lower mounting strip 130 .

[0035] Specifically, the lower mounting strip plate 130 of the present embodiment is provided with a strip groove arranged in the Z direction, and the connecting rod of the pressing blade 150 is embedded in the strip groove to achieve relative fixation of the pressing blade 150 and the lower mounting strip plate 130 .

[0036] It is easy to understand that in order to prevent the pressing blade 150 from damaging the glass substrate, the pressing blade 150 is made of polyurethane material.

[0037] In addition, the real-time pressure feedback mechanism of this embodiment further includes a chip guard plate 160 connected to the lower end of the lower mounting strip plate 130, and two chip guard plates 160 are provided and are respectively located on both sides of the Y direction of the pressing knife 150. The chip guard plate 160 can prevent the splashing of glass fragments when breaking and protect the surface of the glass substrate. Example 2

[0038] Reference Figure 3 and Figure 4This embodiment provides a splitting tool head, including the real-time pressure feedback mechanism for glass breakage in Embodiment 1, and also includes a fixing frame 200, a Z-direction driving pair 300, a mounting plate 400 and a cylinder 500.

[0039] The fixing frame 200 is mainly used to provide hardware support for other components.

[0040] Specifically, the fixing frame 200 of this embodiment includes two support seats 210 and a crossbeam 220 connected to the two support seats 210. The combined structure of the crossbeam 220 and the support seats 210 is not easily deformed, and can ensure the installation accuracy and movement accuracy of the structure.

[0041] The fixing portion of the Z-direction driving pair 300 is connected to the fixing frame 200 .

[0042] Specifically, the Z-direction driving pair 300 of this embodiment is a motor screw pair, and the nut member of the motor screw pair is connected to the mounting plate 400. The motor screw pair is a mature structure in the art, which includes a servo motor, a screw rod, a guide rod and a nut member. The output shaft of the servo motor rotates to drive the screw rod to rotate, so that the nut member can slide along the guide rod under the limiting action of the guide rod to achieve the output of linear displacement.

[0043] The mounting plate 400 is connected to the sliding part of the Z-direction driving pair 300, and the guide rail 111 is connected to the mounting plate 400. When the sliding part of the Z-direction driving pair 300 moves in the Z direction, the mounting plate 400 and the components thereon are driven to rise and fall in the Z direction.

[0044] Furthermore, in the initial stage of debugging and installation, in order to prevent the upper installation strip 120 from falling in the Z direction, the present embodiment adds a support block 700 to the installation plate 400, and a window 121 is provided at the position of the upper installation strip 120 corresponding to 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. The upper installation strip 120 is connected to the guide rail 111 through the upper slider 112, so the support block 700 cooperates with the window 121 to hang and support the upper installation strip 120, effectively preventing the upper installation strip 120 from falling in the Z direction, and facilitating debugging and installation. Since the cylinder 500 will retract when broken, there is a relative displacement in the Z direction between the upper installation strip 120 and the installation plate 400, so it is necessary to reserve a margin of movement between the support block 700 and the window 121, that is, the window 121 is larger than the support block 700, so as to avoid interference with the retraction of the cylinder 500.

[0045] The cylinder body of the cylinder 500 is connected to the mounting plate 400 and the piston rod is connected to the upper mounting strip plate 120 .

[0046] Specifically, there are multiple cylinders 500 and they are spaced apart along the X direction. Multiple cylinders 500 can ensure uniform force on the upper mounting strip 120. The number of cylinders 500 is not limited, for example, six cylinders 500 are provided in this embodiment.

[0047] Specifically, the piston rod of the cylinder 500 is connected to the upper mounting strip 120 via a floating joint 600. During installation, the floating joint 600 has a certain degree of freedom, which can compensate for the structural jamming caused by the installation error of related components, thereby reducing the difficulty of installation; after installation, the floating joint 600 eliminates the degree of freedom under the limit of the guide assembly 110, and will not affect the action of the mechanism.

[0048] It should be noted that a pressure reducing valve 800 and an electrical proportional valve 900 need to be connected in sequence between the gas source and the cylinder 500. The pressure reducing valve 800 can reduce and limit the gas pressure of the gas source to ensure that the pressure value input to the cylinder 500 is constant, and the electrical proportional valve 900 can control and adjust the preset pressure of the cylinder 500.

[0049] The working principle of the split cutter head of this embodiment is as follows: After the cutting process is completed, the adsorption platen adsorbs the glass substrate to move in the Y direction. When the visual system recognizes that the glass substrate is in place, the Z-axis driving pair 300 starts to drive the mounting plate 400 to move downward. At this time, the cylinder 500 is extended to the longest 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 driving pair 300, the mounting plate 400 is controlled to continue to move downward a small distance. The pressure gauge 140 reading gradually increases. When the breaking pressure increases to a level that can resist the preset pressure of the cylinder 500, the cylinder 500 retracts. At this time, the pressure gauge 140 reading is the maximum and remains unchanged. The breaking operation of the glass substrate is completed with the breaking pressure at this moment; when one cutting line is broken, the adsorption platen drives the glass substrate to move in the Y direction until the next cutting line is in place, and the operation is repeated until all cutting lines are broken.

[0050] It should be noted that the pressure gauge 140 mainly has two functions: on the one hand, it can be used to feedback the status of the system. For example, when the preset pressure of the cylinder 500 is 10N, the breaking pressure when the cylinder 500 finally retracts is only 1N, then there must be a fault between the system components; on the other hand, the preset pressure of the cylinder 500 can be reversely determined based on the reading of the pressure gauge 140 and the process requirements of the glass substrate, thereby ensuring the accuracy of the breaking pressure.

[0051] It is easy to understand that, under ideal conditions, the preset pressure of the cylinder 500 should be fully applied to the press knife 150. However, there is friction between the cylinder body and the piston rod of the cylinder 500, and there is friction between the components of the guide assembly 110. When the preset pressure of the cylinder 500 is different, the aforementioned friction value may not be the same. Therefore, the force finally applied to the press knife 150 is not predictable. However, the force of the press knife 150 can be visualized by the pressure gauge 140 without considering the complex force in the middle. The corresponding relationship between the preset pressure of the cylinder 500 and the final output force of the press knife 150 can be intuitively displayed, which is more conducive to the control of the breaking pressure.

[0052] The above is only a specific implementation of the present invention, which enables those skilled in the art to understand or implement the present invention. Although detailed descriptions are given with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A real-time pressure feedback mechanism for glass breakage, characterized in that: include: A guide assembly (110) comprising a guide rail (111) arranged in the Z direction and an upper slider (112) and a lower slider (113) both slidably connected to the guide rail (111); An upper mounting strip plate (120) whose length direction is arranged along the X direction and connected to the upper sliding block (112); A lower mounting strip plate (130), the length direction of which is arranged along the X direction and connected to the lower sliding block (113); A pressure gauge (140) connected between the upper mounting strip (120) and the lower mounting strip (130); A pressing knife (150) is fixed to the lower end of the lower mounting strip plate (130).

2. The real-time pressure feedback mechanism for glass breakage according to claim 1, characterized in that: The guide assemblies (110) are provided in multiple groups and are spaced apart along the X direction; the upper mounting strips (120) are connected to the upper sliders (112) of all groups of guide assemblies (110); and the lower mounting strips (130) are connected to the lower sliders (113) of all groups of guide assemblies (110).

3. The real-time pressure feedback mechanism for glass breakage according to claim 1, characterized in that: At least two pressure gauges (140) are provided and are distributed at intervals along the X direction.

4. The real-time pressure feedback mechanism for glass breakage according to any one of claims 1 to 3, characterized in that: It also includes a chip guard plate (160) connected to the lower end of the lower mounting strip plate (130), wherein two chip guard plates (160) are provided and are respectively located on both sides of the pressing knife (150) in the Y direction.

5. A split blade head, characterized in that: The real-time pressure feedback mechanism for glass breakage according to any one of claims 1 to 4 further comprises: Fixed frame (200); A Z-direction driving pair (300), a fixing portion of which is connected to the fixing frame (200); A mounting plate (400) connected to a sliding portion of the Z-direction drive pair (300), and the guide rail (111) is connected to the mounting plate (400); A cylinder (500) having a cylinder body connected to the mounting plate (400) and a piston rod connected to the upper mounting strip plate (120).

6. The splitter head according to claim 5, characterized in that: The fixing frame (200) comprises two supporting seats (210) and a crossbeam (220) connected to the two supporting seats (210).

7. The splitter head according to claim 5, characterized in that: The Z-direction drive pair (300) is a motor screw pair, and the nut member of the motor screw pair is connected to the mounting plate (400).

8. The splitter head according to claim 5, characterized in that: The cylinders (500) are provided in plurality and are distributed at intervals along the X direction.

9. The splitter head according to claim 8, characterized in that: The piston rod of the cylinder (500) is connected to the upper mounting strip plate (120) via a floating joint (600).

10. The splitter head according to any one of claims 5 to 9, characterized in that: A support block (700) is provided on the mounting plate (400), a window (121) is provided on the upper mounting strip plate (120) at a position corresponding to the support block (700), the support block (700) is placed in the window (121) and a movable margin is reserved to prevent the cylinder (500) from retracting.

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