CN210314000U - A high-precision glass upper and lower knife cutting structure - Google Patents

Abstract

The utility model relates to a liquid crystal display panel cutting technical field specifically is a last lower sword is to cutting structure for equipment is cut to liquid crystal, aims at solving the technical problem that the last lower sword counterpoint precision is low of current last lower sword is to cutting structure. The following technical scheme is adopted: the linear motor is used for controlling the alignment of the X direction of the execution parts of the upper knife beam and the lower knife beam, the photoelectric sensor and the sensor sheet are arranged, and the grating ruler and the reading head are arranged at the same time, wherein the former is used for detecting the zero point of the linear motor, and the latter is used for accurately controlling the running distance of the linear motor; the Y-direction alignment of the actuating components of the upper knife beam and the lower knife beam is controlled by the servo motor matched with the lead screw, and the photoelectric sensor and the sensor piece are arranged at the same time for detecting the zero point of the servo motor, so that the Y-direction moving distance of the actuating components can be accurately controlled, and the X-direction and the Y-direction are matched to greatly improve the alignment precision of the actuating components of the upper knife beam and the lower knife beam.

Description

High-precision glass upper and lower cutter beveling structure

Technical Field

The utility model relates to a liquid crystal display panel cutting technical field specifically is an upper and lower sword is to cutting structure for equipment is cut to liquid crystal.

Background

In recent years, various large flat panel display manufacturers worldwide have shifted to production lines in china, and advanced lines have rooted and germinated in the interior like bamboo shoots in spring after rain. With the continuous development of the mobile phone industry and liquid crystal televisions, the liquid crystal panel gradually develops towards the trend of large size, thin thickness and narrow frame, and the liquid crystal slitting equipment is used in time. The liquid crystal slitting equipment is mainly used for linearly cutting large-size single-layer or double-layer glass in TFT and other liquid crystal industries, and the glass is large in size and inconvenient to turn over or the surfaces of the glass cannot be contacted. The upper and lower cutter bisection structure is a main execution component of the liquid crystal slitting equipment, can cut glass once without turning, can provide accurate pressure during cutting, and can adjust the upper and lower positions of the cutter head in good time when the flatness of the surface of the glass changes, so as to ensure the stability of cutting depth and pressure. The upper and lower cutter alignment precision of the upper and lower cutter bisection structure is crucial to the bisection quality and mainly comprises X-direction alignment precision and Y-direction alignment precision. The alignment precision of an upper cutter and a lower cutter of the existing liquid crystal slitting equipment is low, and the high-precision cutting requirement of a liquid crystal panel cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the current technical problem that the upper and lower sword counterpoint precision is low of cutter bisection structure about. Therefore, the utility model provides a high accuracy glass upper and lower sword is to cutting structure.

The utility model provides a technical scheme that its technical problem adopted is:

a high-precision glass upper and lower cutter bisecting structure comprises an upper cutter beam and a lower cutter beam; the automatic feeding device further comprises two first grating rulers, two first linear motors, two groups of X-direction guide rails and two first photoelectric sensors, wherein the two first grating rulers are respectively arranged on the upper tool beam and the lower tool beam, the first grating rulers are fixed on the side surface of the upper tool beam or the lower tool beam along the X direction, stators of the first linear motors are strip-shaped and are fixed on the same side surface of the upper tool beam or the lower tool beam along the X direction, two movers are arranged on the stators of the first linear motors, each mover of the first linear motors is fixedly provided with a movable plate which is slidably arranged on the X-direction guide rails, each movable plate is fixedly provided with a first reading head corresponding to the first grating ruler, a first sensor sheet is arranged corresponding to the first photoelectric sensor, the first sensor sheet is matched with the first photoelectric sensor to determine the zero point of the mover of the first linear motor, a mounting seat is further fixed on the movable plate, and a lead screw arranged on the mounting seat along the Y direction is rotatably mounted, the lead screw is connected with a servo motor for driving the lead screw to rotate, a nut piece is sleeved on the lead screw, a Y-direction guide rail is further fixed on the mounting seat, the nut piece is fixedly connected with an execution component which is installed on the Y-direction guide rail in a sliding mode, the two execution components of the upper cutter beam and the lower cutter beam are both a cutter head cutting device and a pinch roller device, a second photoelectric sensor and a CCD assembly are further arranged on the mounting seat, the execution component corresponds to the second photoelectric sensor which is provided with a second sensor piece, and the second photoelectric sensor is matched with the second sensor to determine the zero point of the servo motor.

The utility model has the advantages that:

the utility model provides a high-precision glass upper and lower knife bisection structure, which is characterized in that a linear motor is used for controlling the X-direction alignment of an execution component of an upper knife beam and a lower knife beam, a photoelectric sensor and a sensor sheet are arranged, and a grating ruler and a reading head are arranged at the same time, wherein the former is used for detecting the zero point of the linear motor, the latter is used for accurately controlling the running distance of the linear motor, and the two are matched with each other, so that the distance of the linear motor advancing along the X direction can be accurately controlled; the Y-direction alignment of the actuating components of the upper knife beam and the lower knife beam is controlled by the servo motor matched with the lead screw, and the photoelectric sensor and the sensor chip are arranged at the same time for detecting the zero point of the servo motor, so that the Y-direction moving distance of the actuating components can be accurately controlled, the X-direction and the Y-direction are matched to greatly improve the alignment precision of the actuating components of the upper knife beam and the lower knife beam, and the bisection quality is ensured.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the actuator assembly of the upper and lower blade beams of the present invention;

FIG. 3 is a schematic diagram showing the distribution of four actuating components of the upper and lower knife beams of the present invention;

fig. 4 is a schematic view of the cutting head device of the present invention;

FIG. 5 is a front view of the cutting bit assembly of the present invention with the remaining structure of the front plate removed;

fig. 6 is a schematic structural view of the cutting head device of the present invention with the left side plate and the mounting plate removed;

fig. 7 is a schematic structural view of the cutting head device of the present invention with the knife wheel mechanism and the sliding plate removed;

fig. 8 is a schematic structural view of the cutter head device of the present invention without the cutter wheel mechanism and the left side plate.

Detailed Description

Referring to fig. 1 to 3, the high precision glass upper and lower knife bisection structure of the present invention comprises an upper knife beam 1 and a lower knife beam 2, and further comprises two first grating rulers 3-1, two first linear motors 3-2, two sets of X-direction guide rails 3-3, and two first photoelectric sensors, which are respectively mounted on the upper knife beam 1 and the lower knife beam 2, and are all arranged in pairs, that is, the structures of the above components mounted on the upper knife beam 1 and the lower knife beam 2 are the same, the first grating rulers 3-1 are fixed on the side of the upper knife beam 1 or the lower knife beam 2 along the X direction, the stator of the first linear motor 3-2 is strip-shaped and is fixed on the same side of the upper knife beam 1 or the lower knife beam 2 along the X direction, that is, that the first linear motor 3-2 and the first grating rulers 3-1 are mounted on the same side of the upper knife beam 1 or the lower knife beam 2, and two movers are mounted on the stator of the first linear motor 3-2, each rotor of the first linear motor 3-2 is fixedly provided with a moving plate 3-4 which is slidably arranged on the X-direction guide rail 3-3, each moving plate 3-4 is fixedly provided with a first reading head corresponding to the first grating ruler 3-1, a first sensor sheet corresponding to the first photoelectric sensor is arranged, the first sensor sheet is matched with the first photoelectric sensor to determine the zero point of the rotor of the first linear motor 3-2, the moving plate 3-4 is also fixedly provided with an installation seat 3-5, a lead screw 4-1 arranged along the Y direction is rotatably arranged on the installation seat 3-5, the lead screw 4-1 is connected with a servo motor 4-2 for driving the lead screw 4-1 to rotate, a nut member 4-3 is sleeved on the lead screw 4-1, and a Y-direction guide rail is also fixedly arranged on the installation seat 3-5, the nut piece 4-3 is fixedly connected with an executing part 5 which is slidably mounted on the Y-direction guide rail, the two executing parts 5 of the upper knife beam 1 and the lower knife beam 2 are a knife head cutting device and a pinch roller device, a second photoelectric sensor and a CCD assembly 4-4 are further arranged on the mounting seat 3-5, the executing part 5 is provided with a second sensor piece corresponding to the second photoelectric sensor, and the second photoelectric sensor is matched with the second sensor to determine the zero point of the servo motor. When the device is used, the zero position of the rotor is determined through the alignment of the first photoelectric sensor and the first sensor sheet, the X-direction moving distance of the rotor is determined through the matching of the first grating ruler 3-1 and the first reading head, and the X-direction accurate alignment of the upper executing component 5 and the lower executing component 5 is realized through the two points; the zero point position of the servo motor 4-2 is determined through the alignment of the second photoelectric sensor and the second sensor piece, then the line is pre-scribed, the position difference of the Y direction to the original point is accurately determined through the visual detection of the line by the CCD assembly 4-4, then the servo motor 4-2 is controlled to determine the Y direction movement distance of the execution component 5, and therefore the Y direction alignment of the upper execution component 5 and the lower execution component 5 is accurately achieved. When the device is used, the device can be used for cutting glass under the following three conditions: firstly, when the upper surface and the lower surface are required to be cut simultaneously, such as double-layer glass, the executing parts 5 of the upper knife beam and the lower knife beam 2 need to select a knife head cutting device, and then the cutting is carried out in an aligned and synchronous manner; secondly, only the upper surface is needed to be cut, the executing part 5 of the upper knife beam 1 selects a knife head cutting device, the executing part 5 of the lower knife beam 2 selects a pinch roller device, and then the cutting is carried out in an aligned and synchronous manner; thirdly, only the lower surface is needed to cut, the executing part 5 of the lower knife beam 2 is a knife head cutting device, the executing part 5 of the upper knife beam 1 is a pinch roller device, and then the cutting is synchronously performed in an aligned mode.

Furthermore, the servo motor 4-2 is fixed on the mounting base 3-5, the servo motor 4-2 is in transmission connection with the lead screw 4-1 through the synchronous belt 4-5, the servo motor 4-2 and the lead screw 4-1 are located on the same side of the synchronous belt 4-5, and compared with a structure that the servo motor 4-2 directly drives the lead screw 4-1 to move, on one hand, the mounting space is greatly reduced, the structure is more compact, and on the other hand, if the lead screw 4-1 is directly driven to run, the gravity center of a tool bit is forward, which is not beneficial to the movement of the tool bit, and has an eccentric moment.

Further, referring to fig. 4 to 8, the cutter head cutting device comprises a cutter wheel mechanism 5-4, the pinch roller device comprises a pinch roller mechanism 5-16, and the cutter wheel mechanism 5-4 and the pinch roller mechanism 5-16 are both moved up and down by a driving mechanism, namely: the cutter head cutting device and the pinch roller device are driven by the same driving mechanism, the driving mechanism comprises a fixed frame 5-1, a second linear motor 5-2 and a sliding frame 5-3, the fixed frame 5-1 is fixed on a nut piece 4-3 and is slidably mounted on the Y-direction guide rail, a stator of the second linear motor 5-2 is fixedly connected with the fixed frame 5-1, a rotor of the second linear motor 5-2 is fixedly connected with the sliding frame 5-3, the fixed frame 5-1 is slidably connected with the sliding frame 5-3 through a Z-direction guide rail pair 5-5, the fixed frame 5-1 is connected with the sliding frame 5-3 through a tension spring 5-6, and the axis of the second linear motor 5-2, the Z-direction guide rail pair 5-5, The tension springs 5-6 are arranged in the Z direction, the knife flywheel mechanisms 5-4 are fixed on the sliding frames 5-3, the knife flywheel mechanisms 5-4 can be linear cutting knife flywheel mechanisms 5-4 for performing linear cutting, and also can be special-shaped cutting knife flywheel mechanisms 5-4 for performing special-shaped cutting, and the specific type is selected according to the requirements of customers and is integrally replaced; a second reading head 5-7 or a second grating ruler 5-8 is installed on the fixed frame 5-1, the sliding frame 5-3 is correspondingly provided with the second grating ruler 5-8 or the second reading head 5-7, and the second grating ruler 5-8 is matched with the second reading head 5-7 to determine the running distance of the second linear motor 5-2; a third photoelectric sensor 5-9 is arranged on the fixed frame 5-1, a third sensor sheet 5-10 is correspondingly configured on the sliding frame 5-3, and the third photoelectric sensor 5-9 is matched with the third sensor sheet 5-10 to determine the zero position of the second linear motor 5-2; the second reading head 5-7 and the third photoelectric sensor 5-9 are electrically connected with the controller, and the controller controls the second linear motor 5-2 to act. In order to avoid the cutter wheel from damaging the glass and improve the overall cutting efficiency, a person in the field can easily design the cutter wheel, firstly, the cutter wheel is lowered to be in contact with the glass at a higher speed by adopting a position mode, and then, the glass is accurately cut by adopting a constant force mode; on the other hand, if only the constant force mode is adopted, the acceleration is constant, the acceleration can be continuously accelerated, when the glass is reached, the speed of the cutter wheel is overlarge, and an impact accident can occur, so that the impact can be avoided by operating in the position mode before the constant force mode. The position mode and the constant force mode are integrated in the controller of the second linear motor 5-2, the technology belongs to the mature technology of the field of linear motors, the cutter wheel is operated to be close to glass by other modes, and then the cutter wheel is operated in the constant force mode, and the technology is also adopted by the existing cutter head device.

With such a cutter head device structure, the following advantages are provided: 1. the linear motor is adopted to drive the cutter wheel structure, and the structural characteristics of the linear motor are utilized, so that the pressure output is stable, the pressure output range is wide, the pressure output resolution precision is high, and the maintenance is convenient; 2, a photoelectric sensor and a sensor sheet are arranged, and a grating ruler and a reading head are arranged at the same time, wherein the photoelectric sensor and the sensor sheet are used for detecting the zero point of the linear motor, the linear motor is used for accurately controlling the running distance of the linear motor, and the grating ruler and the reading head are matched with each other, so that the distance between the cutter wheel and the surface of the glass can be accurately measured and the running distance of the linear motor can be controlled, the positioning precision is high, the glass cutting precision is further improved, in addition, the constant force mode is controlled to run at a small distance, the speed of the cutter wheel contacting the glass is greatly reduced, and the; compared with an air cylinder pressurizing mode and a servo motor pressurizing mode for driving a cam, the device can be matched with cutting equipment for mounting the device to deal with products with more specifications, can be competent for OLED panels with higher cutting precision requirements and panels with thinner thickness, and has stronger product compatibility and market competitiveness.

When the linear motor is used, the fixing frame 5-1 is fixed on the nut piece 4-3, so that the axis of the second linear motor 5-2, the Z-direction guide rail pair 5-5 and the tension spring 5-6 are all in a vertical state. When the device does not work, the sliding frame 5-3, the second linear motor 5-2 rotor, the cutter wheel mechanism 5-4 and other parts are suspended and supported on the fixed frame 5-1 through the tension spring 5-6; when the device works, the third photoelectric sensor 5-9 and the third sensor piece 5-10 are aligned to generate an alignment signal and send the alignment signal to the controller, the controller records that the position is the zero position of the second linear motor 5-2, records the reading a of the second reading head 5-7 on the second grating ruler 5-8 at the moment, then controls the rotor of the second linear motor 5-2 to move downwards until the cutter wheel contacts the surface of the glass, the contact judgment belongs to the mature technology, namely, a feedback pressure is set, the rotor descends from the zero point, no feedback pressure exists in the process, when the rotor contacts the glass, the feedback pressure is generated and gradually increased, when the preset feedback pressure is reached, the cutter wheel is considered to be in contact with the glass, the reading b of the second grating ruler 5-8 is read, and the height between the zero position of the second linear motor 5-2 and the glass is b-a, the second grating ruler 5-8 is used for measuring the distance, and the precision is higher. After the measurement is finished, controlling the rotor of the second linear motor 5-2 to ascend until the controller receives the alignment signal again, controlling the second linear motor 5-2 to descend in a position mode until the second linear motor is about to contact the glass by the controller, presetting a difference value in the program of 'about to contact', for example, 50 mu m, completing distance control in the descending process by the second grating ruler 5-8, and controlling the distance to descend from the zero point to (b-a-50) mu m with higher precision; when the cutter wheel descends to a preset height, the controller controls the second linear motor 5-2 to continuously descend in a constant force mode until a pressure value set by equipment is reached, and the second linear motor 5-2 outputs the set pressure value in the constant force mode in the subsequent cutting process, so that the height of the cutter wheel can be adaptively adjusted to ensure that the cutting pressure is constant even if the surface of the glass fluctuates, and high-precision cutting is finished.

As a preferable installation structure of the second linear motor 5-2, the fixed frame 5-1 comprises a stator fixing member 5-1-1, the second linear motor 5-2 is rod-shaped and provided with two, the stator of the second linear motor 5-2 is sleeved outside the rotor and is inserted and fixed in the stator fixing member 5-1-1, the sliding frame 5-3 comprises a sliding plate 5-3-1, a rotor pressure head 5-3-2 and a rotor fixing member 5-3-3, the rotor pressure head 5-3-2 and the rotor fixing member 5-3-3 are both fixed on the sliding plate 5-3-1, the rotor of the second linear motor 5-2 extends out of two ends of the stator, and the upper and lower ends of the rotor are respectively connected with the rotor pressure head 5-3-2, The rotor fixing piece 5-3-3 is fixedly connected, and the cutter wheel mechanism 5-4 is installed on the sliding plate 5-3-1. In this case, in contrast to the use of the second stick-shaped linear motor 5-2, the structure is more compact by adopting a structure in which the outer ring is a stator and the inner ring is a mover; under the condition that the output pressure value of the cutter head device 5 is not changed, the two rod-shaped second linear motors 5-2 are connected in parallel to replace one rod-shaped second linear motor 5-2 with larger power, the cost is lower, and the overall dimension of the cutter head device is smaller. The utility model discloses in use two parallelly connected bar-shaped second linear electric motor 5-2 to provide power, have stronger controllability and flexibility with the cylinder comparison, have higher thrust density with traditional servo motor comparison, wholly have fast, low inertia, the advantage of zero tooth's socket effect, can easily realize submicron level's high positioning accuracy. In addition, the resolution value of the output pressure of the rod-shaped second linear motor 5-2 can reach 0.01N, and the continuous thrust output by the two rod-shaped second linear motors 5-2 connected in parallel can reach 40N.

As a preferable installation structure of the second grating ruler 5-8 and the second reading head 5-7, a strip-shaped hole is formed in the middle of the sliding plate 5-3-1, the second reading head 5-7 is fixed on the surface, opposite to the sliding plate 5-3-1, of the stator fixing piece 5-1, the second reading head 5-7 is arranged in the strip-shaped hole, and the second grating ruler 5-8 is fixed on the inner wall of the strip-shaped hole corresponding to the second reading head 5-7, so that the structure is more compact, and the occupied space is smaller. The utility model discloses a second grating chi 5-8, second reading head 5-7 cooperate two parallelly connected bar-shaped second linear electric motor 5-2 to carry out accurate location. Further preferably, the resolution of the selected second grating ruler 5-8 can reach 1nm, and normal identification can be guaranteed even under the high-speed operation of 100 m/s. The second grating ruler 5-8 has loose installation tolerance and simple and quick installation. In addition, the second grating ruler 5-8 has extremely strong anti-pollution capability and can resist the pollution of dust, scratches and light oil stains.

Furthermore, the surface of the stator fixing part 5-1-1 opposite to the sliding plate 5-3-1 is provided with a closed groove embedded with a second reading head 5-7, the upper edge of the groove extends to the upper end face of the stator fixing piece 5-1-1 through the wire casing 5-11, the fixing frame 5-1 also comprises a right side plate 5-1-2, a wire clamp 5-12 positioned above the stator fixing piece 5-1-1 is fixed on the right side plate 5-1-2, the cable of the second reading head 5-7 is fixed in the wire clip 5-12 after passing through the wire-letting groove 5-11, the cables of the stators of the two second linear motors 5-2 are also fixed in the wire clamps 5-12, so that the structure is compact, and the wiring is more orderly.

Preferably, the third photoelectric sensor 5-9 is fixed to the lower portion of the right side plate 5-1-2, the third sensor piece 5-10 is fixed to the lower end face of the mover fixing piece 5-3-3, and the second linear motor 5-2 is located at a zero position when the third photoelectric sensor 5-9 and the third sensor piece 5-10 are horizontally opposite to each other, so that shielding interference of other structures can be avoided, and the structural arrangement is more reasonable.

Further, the fixing frame 5-1 further comprises a mounting plate 5-1-3, a left side plate 5-1-4, a front side plate 5-1-5 and a top plate 5-1-6, the mounting plate 5-1-3 is fixed on the nut member 4-3 and is slidably mounted on the Y-direction guide rail, the mounting plate 5-1-3, the left side plate 5-1-4, the right side plate 5-1-2, the front side plate 5-1-5 and the top plate 5-1-6 together form a cuboid shell structure with an opening at the bottom, and a wire outlet is formed in the top plate 5-1-6 corresponding to the wire clamp 5-12.

Furthermore, two mounting bars 5-13 respectively positioned at the front edge and the rear edge of the left side plate 5-1-4 are fixed on the inner surface of the left side plate, two bearing pieces of the two Z-direction rail pairs 5-5 are respectively arranged on the two mounting bars 5-13, and moving pieces of the Z-direction rail pairs 5-5 are fixed on the sliding plate 5-3-1. The arrangement of the mounting strips 5-13 enables the Z-direction guide rail pair 5-5 to be mounted more conveniently, and meanwhile, the mounting strips 5-13 also make up for the position deviation of the left side plate 5-1-4 and the sliding plate 5-3-1, and ensure that the two guide rails of the Z-direction guide rail pair 5-5 are mounted in the same plane.

Furthermore, an upper tension spring support 5-14 facing the inner side is vertically fixed at the upper end of the mounting bar 5-13, a lower tension spring support 5-15 is fixed on the rotor fixing piece 5-3-3, and two ends of the tension spring 5-6 are respectively hooked with the upper tension spring support 5-14 and the lower tension spring support 5-15.

Preferably, the Z-guide rail pair 5-5 is a cross roller guide rail. In the crossed roller guide rail, the precise rollers in the roller retainers are combined together in a mutually orthogonal mode, the roller retainers are installed on rolling surfaces of 90-degree V-shaped grooves on the special tracks, and the two rows of roller guide rails are assembled in parallel and can bear loads in four directions. The cross roller guide rail has the characteristics of no gap, high rigidity and light and quick action by applying pre-pressing to the cross roller guide rail.

Further, the cutter head device also comprises an air blowing mechanism 5-17 which is fixed on the fixed frame 5-1 and is aligned with the cutter wheel of the cutter wheel mechanism 5-4, and the air blowing mechanism is mainly used for continuously blowing air to the cutter wheel when the cutter head device 5 works and cleaning the cutter wheel.

While the invention has been particularly shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a sword bisection structure about high accuracy glass, includes sword roof beam (1) and sword roof beam (2) down, its characterized in that: the linear cutting machine further comprises two first grating rulers (3-1), two first linear motors (3-2), two groups of X-direction guide rails (3-3) and two first photoelectric sensors which are respectively arranged on the upper tool beam (1) and the lower tool beam (2), wherein the first grating rulers (3-1) are fixed on the side face of the upper tool beam (1) or the lower tool beam (2) along the X direction, the stators of the first linear motors (3-2) are strip-shaped and fixed on the same side face of the upper tool beam (1) or the lower tool beam (2) along the X direction, two rotors are arranged on the stators of the first linear motors (3-2), each rotor of each first linear motor (3-2) is fixedly provided with a movable plate (3-4) which is arranged on the X-direction guide rails (3-3) in a sliding mode, and a first reading head are fixed on each movable plate (3-4) corresponding to the first grating rulers (3-1), A first sensor sheet is fixed corresponding to the first photoelectric sensor, the first sensor sheet is matched with the first photoelectric sensor to determine a zero point of a rotor of the first linear motor (3-2), a mounting seat (3-5) is further fixed on the moving plate (3-4), a lead screw (4-1) arranged along the Y direction is rotatably mounted on the mounting seat (3-5), the lead screw (4-1) is connected with a servo motor (4-2) for driving the lead screw to rotate, a nut piece (4-3) is sleeved on the lead screw (4-1), a Y-direction guide rail is further fixed on the mounting seat (3-5), the nut piece (4-3) is fixedly connected with an execution part (5) which is slidably mounted on the Y-direction guide rail, and the two execution parts (5) of the upper tool beam (1) and the lower tool beam (2) are respectively a tool bit cutting device and a pinch roller device, the mounting seat (3-5) is further provided with a second photoelectric sensor and a CCD assembly (4-4), the execution component (5) is provided with a second sensor sheet corresponding to the second photoelectric sensor, and the second photoelectric sensor is matched with the second sensor to determine a zero point of the servo motor (4-2).

2. A high precision glass upper and lower blade bisection structure as claimed in claim 1, wherein: the servo motor (4-2) is fixed on the mounting base (3-5), the servo motor (4-2) is in transmission connection with the lead screw (4-1) through a synchronous belt (4-5), and the servo motor (4-2) and the lead screw (4-1) are located on the same side of the synchronous belt (4-5).

3. A high precision glass upper and lower blade bisection structure as claimed in claim 2, wherein: the tool bit cutting device comprises a tool wheel mechanism (5-4), the pinch roller device comprises a pinch roller mechanism (5-16), the tool wheel mechanism (5-4) and the pinch roller mechanism (5-16) move up and down through a driving mechanism, the driving mechanism comprises a fixed frame (5-1), a second linear motor (5-2) and a sliding frame (5-3), the fixed frame (5-1) is fixed on a nut piece (4-3) and is slidably installed on the Y-direction guide rail, a stator of the second linear motor (5-2) is fixedly connected with the fixed frame (5-1), a rotor of the second linear motor (5-2) is fixedly connected with the sliding frame (5-3), and the fixed frame (5-1) is slidably connected with the sliding frame (5-3) through a Z-direction guide rail pair (5-5), the fixed frame (5-1) is connected with the sliding frame (5-3) through a tension spring (5-6), the axis of the second linear motor (5-2), the Z-direction guide rail pair (5-5) and the tension spring (5-6) are arranged in the Z direction, and the cutter wheel mechanism (5-4) is fixed on the sliding frame (5-3); a second reading head (5-7) or a second grating ruler (5-8) is installed on the fixed frame (5-1), the sliding frame (5-3) is correspondingly provided with the second grating ruler (5-8) or the second reading head (5-7), and the second grating ruler (5-8) is matched with the second reading head (5-7) to determine the downward movement distance of the second linear motor (5-2); a third photoelectric sensor (5-9) is arranged on the fixed frame (5-1), a third sensor sheet (5-10) is correspondingly configured on the sliding frame (5-3), and the third photoelectric sensor (5-9) is matched with the third sensor sheet (5-10) to determine the zero position of the second linear motor (5-2); the second reading head (5-7) and the third photoelectric sensor (5-9) are electrically connected with the controller, and the controller controls the second linear motor (5-2) to act.

4. A high precision glass upper and lower knife bisection structure as claimed in claim 3, wherein: the fixed frame (5-1) comprises stator fixed pieces (5-1-1), the number of the second linear motors (5-2) is two, the stators of the second linear motors (5-2) are sleeved outside the rotor and are fixedly inserted into the stator fixed pieces (5-1-1), the sliding frame (5-3) comprises a sliding plate (5-3-1), a rotor pressure head (5-3-2) and a rotor fixed piece (5-3-3), the rotor pressure head (5-3-2) and the rotor fixed pieces (5-3-3) are both fixed on the sliding plate (5-3-1), the rotor of the second linear motor (5-2) extends out of two ends of the stator, and the upper end and the lower end of the rotor are respectively connected with the rotor pressure head (5-3-2), The rotor fixing piece (5-3-3) is fixedly connected, and the cutter wheel mechanism (5-4) is installed on the sliding plate (5-3-1).

5. A high precision glass upper and lower knife bisection structure as claimed in claim 4, wherein: the middle part of the sliding plate (5-3-1) is provided with a strip-shaped hole, the surface of the stator fixing piece (5-1-1) opposite to the sliding plate (5-3-1) is fixedly provided with a second reading head (5-7), the second reading head (5-7) is arranged in the strip-shaped hole, and a second grating ruler (5-8) is fixed on the inner wall of the strip-shaped hole corresponding to the second reading head (5-7).

6. A high precision glass upper and lower knife bisection structure as claimed in claim 5, wherein: the surface of the stator fixing piece (5-1-1) opposite to the sliding plate (5-3-1) is provided with a closed groove embedded with a second reading head (5-7), the upper edge of the groove extends to the upper end face of the stator fixing piece (5-1-1) through the wire slot (5-11), the fixing frame (5-1) also comprises a right side plate (5-1-2), a wire clamp (5-12) positioned above the stator fixing piece (5-1-1) is fixed on the right side plate (5-1-2), the cable of the second reading head (5-7) is fixed in the wire clip (5-12) after passing through the wire-letting groove (5-11), the cables of the stators of the two second linear motors (5-2) are also fixed in the clamps (5-12).

7. A high precision glass upper and lower knife bisection structure as claimed in claim 6, wherein: the fixing frame (5-1) further comprises a mounting plate (5-1-3), a left side plate (5-1-4), a front side plate (5-1-5) and a top plate (5-1-6), the mounting plate (5-1-3) is fixed on the nut piece (4-3) and is slidably mounted on the Y-direction guide rail, the mounting plate (5-1-3), the left side plate (5-1-4), the right side plate (5-1-2), the front side plate (5-1-5) and the top plate (5-1-6) form a cuboid shell structure with an opening at the bottom, and a wire outlet hole is formed in the top plate (5-1-6) corresponding to the wire clamp (5-12).

8. A high precision glass upper and lower knife bisecting structure as claimed in claim 7, wherein: two mounting strips (5-13) respectively positioned at the front edge and the rear edge of the left side plate (5-1-4) are further fixed on the inner surface of the left side plate, the Z-direction guide rail pair (5-5) is provided with two guide pieces of the two Z-direction guide rail pairs (5-5) which are respectively mounted on the two mounting strips (5-13), and moving pieces of the Z-direction guide rail pairs (5-5) are fixed on the sliding plate (5-3-1).

9. A high precision glass upper and lower blade bisection structure as claimed in claim 8, wherein: the upper ends of the mounting bars (5-13) are vertically fixed with upper tension spring support columns (5-14) facing the inner side, the rotor fixing pieces (5-3-3) are fixed with lower tension spring support columns (5-15), and two ends of each tension spring (5-6) are respectively hooked with the upper tension spring support columns (5-14) and the lower tension spring support columns (5-15).

10. A high precision glass upper and lower blade bisecting structure as claimed in any one of claims 3 to 9, wherein: the Z-direction guide rail pair (5-5) is a crossed roller guide rail.

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