CN210314004U - High-precision double-cutter or multi-cutter glass cutting machine - Google Patents

Abstract

The utility model relates to a display panel cutting technical field specifically is a high accuracy double knives or multitool glass-cutting machine, aims at solving the different tool bits of current double knives or multitool glass-cutting machine and follows the poor technical problem of X direction operation precision uniformity. The utility model discloses a marble cutting tool, including marble crossbeam, first grating chi, X is to the guide rail, first linear electric motor's stator is all along X to fixing same side at the marble crossbeam, first linear electric motor's stator is the bar structure and installs two at least movers on it, all be fixed with a slidable mounting cutting tool bit device on X is to the guide rail on every first linear electric motor's the mover, every cutting tool bit device all corresponds first grating chi and is fixed with first reading head, still be fixed with first photoelectric sensor on the marble crossbeam, it is fixed with first sensor piece to correspond first photoelectric sensor on one of them cutting tool bit device.

Description

High-precision double-cutter or multi-cutter glass cutting machine

Technical Field

The utility model relates to a display panel cutting technical field specifically is a high accuracy double knives or multitool glass-cutting machine.

Background

With the development and progress of the technology in the fields of materials, manufacturing, detection and the like, the types of panels are continuously enriched, the overall dimension of the panel is increased, the thickness of the panel is reduced, and meanwhile, the performance requirements of display products on the overall dimension, the edge strength and the like of the panel are also increased. An important process in the latter stage of the industry is to cut the panels of the higher generation into long strips or single pieces according to the process requirements, and the cutting machine is a key execution component of the process. The cutting machine has the main functions that after the cutting knife wheel accurately contacts the panel, pressure is stably, accurately and continuously output according to operation requirements, and the panel is scribed and divided along cutting lines of the panel in the X direction (generally, the direction parallel to a cross beam for mounting the glass cutting head) and the Y direction (generally, the direction perpendicular to the cross beam for mounting the glass cutting head). The glass cutting machine can be divided into the following parts according to the number of cutting tool heads on a single cutting device: single-blade cutting machines (one cutting blade), double-blade cutting machines (two cutting blades), multi-blade cutting machines (more than two cutting blades). Different specifications of panels have different processing technologies, and manufacturers can select proper cutting machines according to operation and production requirements. However, in order to adapt to automatic, fast-paced and efficient operation and production, most manufacturers select a double-knife or multi-knife cutting machine.

The glass cutting tool bit device of the existing double-knife or multi-knife cutting machine generally adopts a mode of pressurizing by a cylinder or a cam driven by a servo motor, and has the following two problems in use: due to the integration of various factors such as part machining precision, assembly and debugging precision, control mode, performance of used components and the like, the operation consistency of a single cutter head is poor; the accuracy consistency of the distance traveled by two or more tool bits in the X direction is poor. The above problems, if not handled well, directly affect the quality of the panel product.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the different tool bits of current double knives or multitool glass-cutting machine and follow the poor technical problem of X direction operation precision uniformity. Therefore, the utility model provides a high accuracy double knives or multitool glass-cutting machine.

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

a high-precision double-cutter or multi-cutter glass cutting machine comprises a rack, wherein a marble base is fixed on the rack, and a Y-direction assembly and a cutter beam assembly are mounted on the upper surface of the marble base; the Y-direction assembly comprises two Y-direction guide rails fixed on the upper surface of the marble base, a substrate is arranged on the two Y-direction guide rails in a sliding mode, the substrate is connected with a driving device for driving the substrate to move in the Y direction, a DD (direct drive) motor is arranged on the upper surface of the substrate, and a platen used for adsorbing glass to be cut is arranged on the upper surface of the DD motor; the utility model discloses a marble cutting tool, including cutter beam assembly, first grating chi, X to guide rail, first linear electric motor, the marble crossbeam passes through left support and right support to be fixed at the upper surface of marble base, first grating chi, X are all followed X to fixing same side at the marble crossbeam to guide rail, first linear electric motor's stator is strip structure and installs two at least movers on it, all is fixed with a slidable mounting on every first linear electric motor's the mover and is in cutting tool bit device on the X is to the guide rail, and every cutting tool bit device all corresponds first grating chi and is fixed with first reading head, still be fixed with first photoelectric sensor on the marble crossbeam, correspond first photoelectric sensor on one of them cutting tool bit device and be fixed with first sensor piece.

The utility model has the advantages that:

1) the utility model provides a high-precision double-cutter or multi-cutter glass cutting machine, at least two cutter head cutting devices are arranged on a cutter frame beam, a linear motor is adopted to drive the cutter head cutting devices, and the control precision of the X-direction distance is high by utilizing the structural characteristics of the linear motor;

2) the positioning device is provided with the photoelectric sensor and the sensor sheet, and is also provided with the grating ruler and the reading head, wherein the photoelectric sensor and the sensor sheet are used for detecting the zero point of the linear motor, the reading head is used for accurately controlling the running distance of the linear motor, the linear motor can be accurately controlled to move forward along the X direction by matching the photoelectric sensor and the sensor sheet, the positioning precision is high, and the precision consistency of the running distances of different tool bits along the X direction is greatly improved.

Drawings

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

fig. 2 is a front view of the Y-directional assembly of the present invention;

fig. 3 is a top view of the Y-directional assembly of the present invention;

FIG. 4 is a front view of the knife beam assembly of the present invention;

fig. 5 is a schematic view of the cutting head device of the present invention;

fig. 6 is a front view of the cutting bit device of the present invention with the remaining structure of the front side plate removed;

fig. 7 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. 8 is a schematic view of the cutting head device of the present invention with the knife wheel mechanism and the sliding plate removed;

fig. 9 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 4, the utility model discloses a high-precision double-blade or multi-blade glass cutting machine, which comprises a frame 1, wherein the frame 1 is mainly used as a base of the device to fix and support a Y-direction component 3 and a knife beam component 4, specifically, the main body of the frame 1 is formed by welding square steel tubes, and the lower side of the frame 1 is provided with a rolling caster wheel and a fixed support leg; a marble base 2 is fixed on the rack 1, the base and the subsequent beams are made of marble, the physical properties of marble, which are not easy to deform, are mainly utilized, the structural precision is favorably ensured, and a Y-direction component 3 and a knife beam component 4 are arranged on the upper surface of the marble base 2; the Y-direction component 3 comprises two Y-direction guide rails 3-1 fixed on the upper surface of a marble base 2, a substrate 3-2 is installed on the two Y-direction guide rails 3-1 in a sliding mode, the substrate 3-2 is connected with a driving device 3-3 for driving the substrate to move in the Y direction, the driving device 3-3 adopts a structure commonly used in the mechanical field, such as a motor lead screw structure, a DD motor 3-4 is installed on the upper surface of the substrate 3-2, and a bedplate 3-5 for adsorbing glass to be cut is installed on the upper surface of the DD motor 3-4; the knife beam component 4 comprises a left support 4-1, a right support 4-2, a marble beam 4-3, a first grating ruler 4-4, an X-direction guide rail 4-5 and a first linear motor 4-6, the marble beam 4-3 is fixed on the upper surface of the marble base 2 through the left support 4-1 and the right support 4-2, stators of the first grating ruler 4-4, the X-direction guide rail 4-5 and the first linear motor 4-6 are all fixed on the same side surface of the marble beam 4-3 along the X direction, the stator of the first linear motor 4-6 is of a strip structure and is provided with at least two rotors, each rotor of the first linear motor 4-6 is fixed with a cutting bit device 5 which is slidably arranged on the X-direction guide rail 4-5, each cutting head device 5 is fixed with a first reading head corresponding to the first grating ruler 4-4, the marble beam 4-3 is also fixed with a first photoelectric sensor, and one cutting head device 5 is fixed with a first sensor sheet corresponding to the first photoelectric sensor. When in use, the operation is divided into the following steps: firstly, a mechanical arm or a manual work puts the glass to be cut on a bedplate 3-5, and vacuum is started to adsorb the glass on the bedplate 3-5; secondly, the driving device 3-3 drives the bedplate 3-5 to move to a target position in the Y direction, and the target position is detected and aligned by adopting program control or additionally arranging a CCD detection mechanism 6, which are all common technologies in the field; thirdly, the first linear motor 4-6 controls the rotor to move along the X direction until the first sensor sheet is aligned with the first photoelectric sensor, and the zero position of the rotor is determined at the moment, and at the moment, because all the rotors correspond to the same grating ruler, the zero positions of other rotors can be pushed out according to the detected rotor; fourthly, according to a preset glass cutting program, controlling each rotor of the first linear motor 4-6 to move right above the cutting line, and in the process, recognizing and reading the position information of the first grating ruler 4-4 by a first reading head arranged on each cutting tool bit device 5 and feeding back the position information, so that the deviation precision range of a cutter wheel on each cutting tool bit device 5 and the cutting line is ensured to be 0.001 mm; fifthly, controlling each cutter head device 5 to descend until the cutter wheel contacts the panel, and applying a set pressure value to the panel; sixthly, the driving device 3-3 drives the bedplate 3-5 to move along the Y direction again to finish the cutting of the longitudinal typesetting for one time, and the actions are repeated according to the typesetting condition until the cutting operation of all the longitudinal typesetting is finished; and seventhly, rotating the DD motor by 3-4 degrees for 90 degrees, and finishing transverse cutting in the same way as longitudinal typesetting cutting.

Further, referring to fig. 5 to 9, the cutting tool bit device 5 includes a fixing frame 5-1, a second linear motor 5-2, a sliding frame 5-3, and a cutter wheel mechanism 5-4, the fixing frame 5-1 is fixed on a rotor of the first linear motor 4-6 and is slidably mounted on the X-guide rail 4-5, a stator of the second linear motor 5-2 is fixedly connected with the fixing frame 5-1, a rotor of the second linear motor 5-2 is fixedly connected with the sliding frame 5-3, the fixing frame 5-1 and the sliding frame 5-3 are slidably connected through a Z-guide rail pair 5-5, the fixing frame 5-1 and the sliding frame 5-3 are also connected through a tension spring 5-6, and an axis of the second linear motor 5-2, The Z-direction guide rail pair 5-5 and the tension spring 5-6 are parallel to each other, the knife flywheel mechanism 5-4 is fixed on the sliding frame 5-3, the knife flywheel mechanism 5-4 can be a linear cutting knife flywheel mechanism 5-4 for performing linear cutting, or a special-shaped cutting knife flywheel mechanism 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 second photoelectric sensor 5-9 is arranged on the fixed frame 5-1, a second sensor sheet 5-10 is correspondingly configured on the sliding frame 5-3, and the second photoelectric sensor 5-9 is matched with the second sensor sheet 5-10 to determine the zero position of the second linear motor 5-2; the second reading head 5-7 and the second 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 rotor of the first linear motor 4-6, 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 second photoelectric sensor 5-9 and the second 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 second photoelectric sensor 5-9 is fixed to the lower portion of the right side plate 5-1-2, the second sensor piece 5-10 is fixed to the lower end face of the mover fixing piece 5-3-3, and the second photoelectric sensor 5-9 and the second sensor piece 5-10 are horizontally opposite to each other, so that the second linear motor 5-2 is located at a zero position, shielding interference of other structures can be avoided, and 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 a rotor of the first linear motor 4-6 and is slidably mounted on the X-direction guide rail 4-5, 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 jointly 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 cutting tool further comprises an air blowing mechanism 5-16 which is fixed on the fixed frame 5-1 and is aligned with the knife flywheel of the knife flywheel mechanism 5-4, and the air blowing mechanism is mainly used for continuously blowing air to the knife flywheel and cleaning the knife flywheel when the cutting tool bit device 5 works.

Preferably, five movers are arranged on the stator of the first linear motor 4-6, each mover is fixed with a cutting head device 5, wherein CCD detection mechanisms 6 are further arranged on the second and fourth cutting head devices 5. Two points define a straight line, two CCD detection mechanisms 6 can position the glass, and the arrangement on the second and the fourth is convenient for structural arrangement. The CCD detection mechanism 6 is a detection mechanism commonly used in the field and mainly used for grabbing Mark marks on glass and completing accurate alignment of the glass by matching with the actions of the DD motor 3-4 and the driving device 3-3.

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 high accuracy double knives or multitool glass-cutting machine which characterized in that: the marble cutting machine comprises a rack (1), wherein a marble base (2) is fixed on the rack (1), and a Y-direction component (3) and a knife beam component (4) are arranged on the upper surface of the marble base (2); the Y-direction assembly (3) comprises two Y-direction guide rails (3-1) fixed on the upper surface of a marble base (2), a substrate (3-2) is mounted on the two Y-direction guide rails (3-1) in a sliding mode, the substrate (3-2) is connected with a driving device (3-3) for driving the substrate to move in the Y direction, a DD motor (3-4) is mounted on the upper surface of the substrate (3-2), and a table plate (3-5) used for adsorbing glass to be cut is mounted on the upper surface of the DD motor (3-4); knife beam subassembly (4) include left socle (4-1), right branch seat (4-2), marble crossbeam (4-3), first grating chi (4-4), X is to guide rail (4-5), first linear electric motor (4-6), marble crossbeam (4-3) is fixed at the upper surface of marble base (2) through left socle (4-1) and right branch seat (4-2), first grating chi (4-4), X are all followed X to fixing same side at marble crossbeam (4-3) to guide rail (4-5), the stator of first linear electric motor (4-6) is the bar structure and installs two at least runners on it, all is fixed with a slidable mounting on the runner of every first linear electric motor (4-6) X to the cutting on guide rail (4-5) The cutting head device comprises a cutting head device (5), wherein each cutting head device (5) corresponds to a first grating ruler (4-4) and is fixedly provided with a first reading head, a first photoelectric sensor is further fixed on a marble cross beam (4-3), and a first sensor sheet is fixed on one cutting head device (5) corresponding to the first photoelectric sensor.

2. A high precision double or multiple blade glass cutting machine according to claim 1, wherein: the cutting tool bit device (5) comprises a fixed frame (5-1), a second linear motor (5-2), a sliding frame (5-3) and a cutter wheel mechanism (5-4), wherein the fixed frame (5-1) is fixed on a rotor of the first linear motor (4-6) and is slidably mounted on the X-direction guide rail (4-5), 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), and 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 parallel to each other, 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 second photoelectric sensor (5-9) is arranged on the fixed frame (5-1), a second sensor sheet (5-10) is correspondingly configured on the sliding frame (5-3), and the second photoelectric sensor (5-9) is matched with the second sensor sheet (5-10) to determine the zero position of the second linear motor (5-2); the second reading head (5-7) and the second photoelectric sensor (5-9) are electrically connected with the controller, and the controller controls the second linear motor (5-2) to act.

3. A high precision double or multiple edged glass cutting machine according to claim 2, characterized in that: 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).

4. A high precision double or multiple blade glass cutting machine according to claim 3, 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).

5. A high precision double or multiple blade glass cutting machine according to claim 4, characterized in that: 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).

6. A high precision double or multiple blade glass cutting machine according to claim 5, wherein: the fixed mount (5-1) also 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 a rotor of the first linear motor (4-6) and is slidably mounted on the X-direction guide rail (4-5), 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) jointly 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).

7. A high precision double or multiple edged glass cutting machine according to claim 6, characterized in that: 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).

8. A high precision double or multiple edged glass cutting machine according to claim 7, characterized in that: 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).

9. A high precision double or multiple edge glass cutting machine according to any of claims 2-8, wherein: the Z-direction guide rail pair (5-5) is a crossed roller guide rail.

10. A high precision double or multiple blade glass cutting machine according to claim 1, wherein: the stator of the first linear motor (4-6) is provided with five rotors, each rotor is fixed with a cutting tool bit device (5), and the second and fourth cutting tool bit devices (5) are also provided with CCD detection mechanisms (6).

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