CN210314010U

CN210314010U - High-precision glass cutting tool bit device

Info

Publication number: CN210314010U
Application number: CN201921192823.3U
Authority: CN
Inventors: 王建花; 李大伟; 蔡克新; 黄立勇; 王建鹏; 王涛; 张兴华; 董彦梅; 刘向勇; 曹力宁; 宁益丹
Original assignee: CETC Fenghua Information Equipment Co Ltd
Current assignee: CETC Fenghua Information Equipment Co Ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-04-14
Anticipated expiration: 2029-07-26

Abstract

The utility model relates to a panel display trade specifically is a high accuracy glass-cutting tool bit device, aims at solving the technical problem that current glass-cutting tool bit device precision is low. The linear motor comprises a fixed frame, a linear motor, a sliding frame and a cutter wheel mechanism, wherein a stator of the linear motor is fixedly connected with the fixed frame, a rotor of the linear motor is fixedly connected with the sliding frame, the fixed frame is in sliding connection with the sliding frame through a guide rail pair, the fixed frame is connected with the sliding frame through a tension spring, the axis of the linear motor, the guide rail pair and the tension spring are parallel to each other, and the cutter wheel mechanism is fixed on the sliding frame; a reading head or a grating ruler is arranged on the fixed frame, and the grating ruler or the reading head is correspondingly arranged on the sliding frame; the fixing frame is provided with a photoelectric sensor, and the sliding frame is correspondingly provided with a sensor sheet; the reading head and the photoelectric sensor are electrically connected with the controller, and the controller controls the linear motor to act in a position mode or a constant force mode.

Description

High-precision glass cutting tool bit device

Technical Field

The utility model relates to a flat panel display trade, in particular to show glass-cutting technical field, specifically are a high accuracy glass-cutting tool bit device.

Background

The flat panel display industry includes a variety of panels such as TFT-LCD, TP, OLED, etc., and an important process in the latter stage of the industry is to cut the panels of the advanced generation into strips or single pieces by a cutting machine according to the process requirements. In order to ensure the panel cutting precision of the flat panel display industry, the cutting machine needs to meet the following requirements: firstly, the distance between a cutting knife wheel and the surface of a panel can be accurately measured before cutting, and the distance between the cutting knife wheel and the surface of the panel can be accurately controlled during operation, particularly for a panel with thin thickness (such as a double-layer bonded panel consisting of a single layer with the thickness of 0.1 mm), a very small distance is set before the cutting knife wheel is contacted with the panel, the distance control precision reaches at least 0.01mm, a pressure output device operates in a constant force mode within the very short distance, and the speed of the cutting knife wheel when the cutting knife wheel is contacted with the surface of the panel is smaller as the distance is shorter, so that the cutting knife wheel cannot impact and damage the panel, and meanwhile, the cutting knife wheel (particularly the micro-teeth of the cutting knife wheel) can be protected from being damaged; secondly, for panels of different types or specifications, the cutting pressure can be stably output within a large range, generally 2-30N, and the minimum difference value of the output cutting pressure can reach 0.05N, so that the quality of each panel can be ensured; thirdly, when processing big batch panel, this cutting pressure of output that can be stable, if the continuous undulant can direct influence cutting effect of cutting pressure, cause the product quality problem. Based on the above requirements, the cutting machine is essentially guaranteed by a cutting tool bit device, which is a key actuating mechanism of the cutting machine.

The existing cutting bit devices mainly have the following two types:

the first is a cylinder pressurization mode, and the cylinder with the structure has low driving response speed and poor repeatability, and cannot ensure that the first point requirement can be met every time; the friction exists between the piston and the cylinder body of the cylinder, and the requirement that the minimum difference value of the output cutting pressure of the second point is 0.05N cannot be continuously and stably met; the pressure output of the cylinder can be influenced by the changes of factors such as air source pressure, flow and the like, so that the pressure output of the cutter wheel of the cutting machine fluctuates, the cutting effect is influenced, the overall stability is poor, and the requirements of the third point cannot be met. The second is the pressurized mode of servo motor drive cam, and this kind of structure mainly relies on the curved surface of cam and gyro wheel direct contact to transmit servo motor's power to the cutting break bar, and the factor such as part machining precision, thermal treatment effect, installation and debugging are taken into account to the synthesis, and in addition after long-time operation, there is certain degree wearing and tearing on cam and gyro wheel surface, and these all can directly influence the operating condition of cutting tool bit device, and the cutting quality of panel can receive the influence, can't satisfy above-mentioned second, three-point requirement for a long time steadily. In summary, the two existing cutting bit devices cannot meet the three requirements of high-precision machining, and the application has limitations and needs to be improved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the compatible not strong technical problem of current glass-cutting tool bit device precision low, panel specification. Therefore, the utility model provides a high accuracy glass-cutting tool bit device.

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

a high-precision glass cutting tool bit device comprises a fixed frame, a linear motor, a sliding frame and a cutter wheel mechanism, wherein a stator of the linear motor is fixedly connected with the fixed frame, a rotor of the linear motor is fixedly connected with the sliding frame, the fixed frame is in sliding connection with the sliding frame through a guide rail pair (the guide rail pair is used for limiting and guiding the sliding frame so as to ensure the uniqueness and precision of the motion direction of the cutter wheel mechanism), the fixed frame is connected with the sliding frame through a tension spring (the tension spring is mainly used for overcoming the gravity of the sliding frame, the rotor of the linear motor and the cutter wheel mechanism and further hoisting and supporting the mechanism), the axis of the linear motor, the guide rail pair and the tension spring are parallel to each other, the cutter wheel mechanism is fixed on the sliding frame (the three are vertically arranged when in use, and the; a reading head or a grating ruler is installed on the fixed frame, the grating ruler or the reading head is correspondingly configured on the sliding frame, and the grating ruler is matched with the reading head to determine the downward movement distance of the linear motor; the fixing frame is provided with a photoelectric sensor, the sliding frame is correspondingly provided with a sensor sheet, and the photoelectric sensor is matched with the sensor sheet to determine the zero position of the linear motor; the reading head and the photoelectric sensor are electrically connected with the controller, and the controller controls the linear motor to act.

The utility model has the advantages that:

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) the glass cutting device is provided with a photoelectric sensor and a sensor sheet, and is also provided with a grating ruler and a reading head, wherein the photoelectric sensor and the sensor sheet are used for detecting the zero point of a 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 a cutter wheel and the surface of 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;

3) compared with a cylinder pressurization mode and a pressurization mode of a servo motor driving cam, the cutting equipment provided with the device in a matched mode can 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.

Drawings

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

FIG. 2 is a front view of the present invention with the remaining structure of the front side plate removed;

FIG. 3 is a schematic structural view of the present invention with the left side plate and the base plate removed;

FIG. 4 is a schematic structural view of the present invention with the knife flywheel mechanism and the sliding plate removed;

fig. 5 is a schematic structural view of the utility model with the knife flywheel mechanism and the left side plate removed.

Detailed Description

Referring to fig. 1 to 5, the high precision glass cutting tool bit device of the present invention comprises a fixing frame 1, a linear motor 2, a sliding frame 3, a knife wheel mechanism 4, a stator 2-1 of the linear motor 2 is fixedly connected with the fixed frame 1, a rotor 2-2 of the linear motor 2 is fixedly connected with the sliding frame 3, the fixed frame 1 is connected with the sliding frame 3 in a sliding way through a guide rail pair 5, the fixed frame 1 is connected with the sliding frame 3 through a tension spring 6, the axis of the linear motor 2, the guide rail pair 5 and the tension spring 6 are parallel to each other, the knife flywheel mechanism 4 is fixed on the sliding frame 3, the knife flywheel mechanism 4 can be a linear cutting knife flywheel mechanism 4 for linear cutting or a special-shaped cutting knife flywheel mechanism 4 for special-shaped cutting, and the specific type is selected according to the requirements of customers and is integrally replaced; a reading head 7 or a grating ruler 8 is installed on the fixed frame 1, the grating ruler 8 or the reading head 7 is correspondingly configured on the sliding frame 3, and the grating ruler 8 is matched with the reading head 7 to determine the running distance of the linear motor 2; a photoelectric sensor 9 is arranged on the fixed frame 1, a sensor sheet 10 is correspondingly arranged on the sliding frame 3, and the photoelectric sensor 9 is matched with the sensor sheet 10 to determine the zero position of the linear motor 2; the reading head 7 and the photoelectric sensor 9 are electrically connected with the controller, and the controller controls the linear motor 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 linear motor 2, the technology belongs to mature technologies in the field of the linear motor 2, other modes are firstly applied to enable the cutter wheel to run to be close to glass, and then the cutter wheel runs in the constant force mode, and the technology is also adopted by the existing cutter head device.

When the linear motor is used, the fixing frame 1 is fixed on a cutting machine, so that the axis of the linear motor 2, the guide rail pair 5 and the tension spring 6 are all in a vertical state. When the device does not work, the sliding frame 3, the linear motor 2 rotor 2-2, the cutter wheel mechanism 4 and other parts are suspended and supported on the fixed frame 1 through the tension spring 6; when the device works, firstly, the photoelectric sensor 9 and the sensor piece 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 linear motor 2, and records the reading a of the reading head 7 on the grating ruler 8 at the moment, then the rotor of the linear motor 2 is controlled 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, the feedback pressure is generated after the rotor contacts the glass and is 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 grating ruler 8 is read, the height between the zero position of the linear motor 2 and the glass is b-a, the grating ruler 8 is used for measuring the distance, and the precision is higher. After the measurement is finished, controlling the rotor 2-2 of the linear motor 2 to ascend until the controller receives the alignment signal again, controlling the linear motor 2 to descend in a position mode by the controller until the linear motor is about to contact with the glass, wherein a difference value is preset in a program of 'about to contact', for example, 50 micrometers, distance control in the descending process is completed by the grating ruler 8, and the precision is higher, namely, the linear motor is controlled to descend from a zero point to (b-a-50) micrometers; when the cutter wheel descends to the preset height, the controller controls the linear motor 2 to continuously descend in the constant force mode until the pressure value set by the equipment is reached, and the linear motor 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 the high-precision cutting is finished.

As a preferred mounting structure of the linear motor 2, the stationary frame 1 includes a stator fixing member 1-1, the linear motor 2 is rod-shaped and is provided with two linear motors, a stator 2-1 of the linear motor 2 is sleeved outside the rotor 2-2, the stator 2-1 is inserted and fixed in the stator fixing part 1-1, the sliding frame 3 comprises a sliding plate 3-1, a rotor pressure head 3-2 and a rotor fixing piece 3-3, the rotor pressure head 3-2 and the rotor fixing piece 3-3 are both fixed on the sliding plate 3-1, the rotor 2-2 of the linear motor 2 extends out of two ends of the stator 2-1, the upper end and the lower end of the rotor 2-2 are fixedly connected with the rotor pressure head 3-2 and the rotor fixing piece 3-3 respectively, and the cutter wheel mechanism 4 is installed on the sliding plate 3-1. In the structure, the structure is more compact by adopting a structure that the outer ring is a stator 2-1 and the inner ring is a rotor 2-2, which is opposite to the use mode of the common rod-shaped linear motor 2; under the condition that the output pressure value of the cutting tool bit device is not changed, the two rod-shaped linear motors 2 are connected in parallel to replace one rod-shaped linear motor 2 with larger power, the cost is lower, and the overall dimension of the tool bit device is smaller. The utility model discloses in use two parallelly connected bar-shaped linear electric motor 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, zero tooth's socket effect's advantage, can easily realize submicron level's high positioning accuracy. In addition, the resolution value of the output pressure of the rod-shaped linear motor 2 can reach 0.01N, and the continuous thrust output by the two rod-shaped linear motors 2 connected in parallel can reach 40N.

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

Furthermore, a closed groove in which the reading head 7 is embedded is arranged on the surface of the stator fixing piece 1-1 opposite to the sliding plate 3-1, the upper edge of the groove extends to the upper end face of the stator fixing piece 1-1 through the wire slot 11, the fixing frame 1 further comprises a right side plate 1-2, a wire clamp 12 located above the stator fixing piece 1-1 is fixed on the right side plate 1-2, a cable of the reading head 7 penetrates through the wire slot 11 and then is fixed in the wire clamp 12, and cables of the stators 2-1 of the two linear motors 2 are also fixed in the wire clamp 12, so that the structure is compact, and the wiring is more orderly.

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

Further, the fixing frame 1 further comprises a base plate 1-3, a left side plate 1-4, a front side plate 1-5 and a top plate 1-6, the base plate 1-3 is fixed on the cutting machine, the base plate 1-3, the left side plate 1-4, the right side plate 1-2, the front side plate 1-5 and the top plate 1-6 jointly form a cuboid shell structure with an opening at the bottom, and wire outlets are formed in the top plate 1-6 corresponding to the wire clamps 12. When the cutting machine is used specifically, the substrates 1-3 are fixed on the cutting machine.

Furthermore, two mounting strips 13 respectively positioned at the front edge and the rear edge of the left side plate 1-4 are fixed on the inner surface of the left side plate, two guide rail pairs 5 are provided, and the guide parts of the two guide rail pairs 5 are respectively mounted on the two mounting strips 13, and the moving part of the guide rail pair 5 is fixed on the sliding plate 3-1. The installation of the guide rail pair 5 is more convenient due to the arrangement of the installation strip 13, and meanwhile, the position deviation of the left side plate 1-4 and the sliding plate 3-1 is compensated through the installation strip 13, so that the two guide rails of the guide rail pair 5 are ensured to be installed in the same plane.

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

Preferably, the guide rail pair 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 16 which is fixed on the fixed frame 1 and is aligned with the cutter wheel of the cutter wheel mechanism 4, and the air blowing mechanism is mainly used for continuously blowing air to the cutter wheel when the cutter head device 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

1. The utility model provides a high accuracy glass-cutting tool bit device which characterized in that: the cutting tool comprises a fixed frame (1), a linear motor (2), a sliding frame (3) and a cutting wheel mechanism (4), wherein a stator (2-1) of the linear motor (2) is fixedly connected with the fixed frame (1), a rotor (2-2) of the linear motor (2) is fixedly connected with the sliding frame (3), the fixed frame (1) is in sliding connection with the sliding frame (3) through a guide rail pair (5), the fixed frame (1) is connected with the sliding frame (3) through a tension spring (6), the axis of the linear motor (2), the guide rail pair (5) and the tension spring (6) are parallel to each other, and the cutting wheel mechanism (4) is fixed on the sliding frame (3); a reading head (7) or a grating ruler (8) is installed on the fixed frame (1), the grating ruler (8) or the reading head (7) is correspondingly configured on the sliding frame (3), and the grating ruler (8) is matched with the reading head (7) to determine the downward movement distance of the linear motor (2); the fixing frame (1) is provided with a photoelectric sensor (9), the sliding frame (3) is correspondingly provided with a sensor sheet (10), and the photoelectric sensor (9) is matched with the sensor sheet (10) to determine the zero position of the linear motor (2); the reading head (7) and the photoelectric sensor (9) are electrically connected with the controller, and the controller controls the linear motor (2) to act.

2. A high precision glass-cutting-bit device according to claim 1, wherein: the fixing frame (1) comprises stator fixing pieces (1-1), the linear motors (2) are rod-shaped and provided with two, the stators (2-1) of the linear motors (2) are sleeved outside the rotors (2-2), the stators (2-1) are fixed in the stator fixing pieces (1-1) in an inserting mode, the sliding frame (3) comprises sliding plates (3-1), rotor pressure heads (3-2) and rotor fixing pieces (3-3), the rotor pressure heads (3-2) and the rotor fixing pieces (3-3) are fixed on the sliding plates (3-1), the rotors (2-2) of the linear motors (2) extend out of two ends of the stators (2-1), and the upper ends and the lower ends of the rotors (2-2) are respectively connected with the rotor pressure heads (3-2) and the rotor pressure heads (3-2), The rotor fixing piece (3-3) is fixedly connected, and the cutter wheel mechanism (4) is installed on the sliding plate (3-1).

3. A high precision glass-cutting-bit device according to claim 2, wherein: a strip-shaped hole is formed in the middle of the sliding plate (3-1), a reading head (7) is fixed on the surface, opposite to the sliding plate (3-1), of the stator fixing piece (1-1), the reading head (7) is arranged in the strip-shaped hole, and a grating ruler (8) is fixed on the inner wall of the strip-shaped hole and corresponds to the reading head (7).

4. A high precision glass-cutting-bit device according to claim 3, wherein: the surface of the stator fixing piece (1-1) opposite to the sliding plate (3-1) is provided with a closed groove in which a reading head (7) is embedded, the upper edge of the groove extends to the upper end face of the stator fixing piece (1-1) through a wire leading groove (11), the fixing frame (1) further comprises a right side plate (1-2), a wire clamp (12) located above the stator fixing piece (1-1) is fixed on the right side plate (1-2), a cable of the reading head (7) penetrates through the wire leading groove (11) and then is fixed in the wire clamp (12), and cables of stators (2-1) of two linear motors (2) are also fixed in the wire clamp (12).

5. A high precision glass-cutting-bit device according to claim 4, wherein: the photoelectric sensor (9) is fixed to the lower portion of the right side plate (1-2), the sensor piece (10) is fixed to the lower end face of the rotor fixing piece (3-3), and the linear motor (2) is located at a zero point position when the photoelectric sensor (9) is horizontally opposite to the sensor piece (10).

6. A high precision glass-cutting-bit device according to claim 5, wherein: the fixing frame (1) further comprises a base plate (1-3), a left side plate (1-4), a front side plate (1-5) and a top plate (1-6), the base plate (1-3) is fixed on the cutting machine, the base plate (1-3), the left side plate (1-4), the right side plate (1-2), the front side plate (1-5) and the top plate (1-6) jointly form a cuboid shell structure with an opening at the bottom, and wire outlet holes are formed in the top plate (1-6) corresponding to the wire clamps (12).

7. A high precision glass-cutting-bit device according to claim 6, wherein: the inner surface of the left side plate (1-4) is further fixed with two mounting strips (13) which are respectively positioned at the front edge and the rear edge of the left side plate, the guide rail pair (5) is provided with two guide parts, the two guide parts of the two guide rail pairs (5) are respectively mounted on the two mounting strips (13), and moving parts of the guide rail pair (5) are fixed on the sliding plate (3-1).

8. A high precision glass-cutting-bit device according to claim 7, wherein: the upper end of the mounting bar (13) is vertically fixed with an upper tension spring support (14) facing the inner side, the rotor fixing piece (3-3) is fixed with a lower tension spring support (15), and two ends of the tension spring (6) are respectively hooked with the upper tension spring support (14) and the lower tension spring support (15).

9. A high precision glass cutting head according to any of claims 1 to 8, wherein: the guide rail pair (5) is a crossed roller guide rail.

10. A high precision glass-cutting-bit device according to claim 9, wherein: the device also comprises an air blowing mechanism (16) which is fixed on the fixed frame (1) and is aligned with the knife flywheel of the knife flywheel mechanism (4).