CN114905089A

CN114905089A - Backlight panel cutting device

Info

Publication number: CN114905089A
Application number: CN202210844378.4A
Authority: CN
Inventors: 吴王坤; 王强光
Original assignee: Sichuan Zhaoji Photoelectric Technology Co ltd
Current assignee: Sichuan Zhaoji Photoelectric Technology Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-08-16
Anticipated expiration: 2042-07-19
Also published as: CN114905089B

Abstract

The invention belongs to the technical field of cutting equipment, and provides a backlight source plate cutting device which comprises a base, an XYZ three-axis moving mechanism and a sawing mechanism, wherein a hollow cutting table is arranged in the middle of the top surface of the base; at least one cutting seam and a plurality of gas adsorption grooves are arranged in a sinking area on the top surface of the cutting table, and the gas adsorption grooves are symmetrically positioned on two sides of the cutting seam and adsorb a backlight source plate to be cut under negative pressure; the sawing mechanism comprises a blade and an air guide pipe internally provided with a fan blade, and the fan blade and the blade rotate synchronously; the air guide pipe is divided into an air outlet chamber and an air inlet chamber by taking the fan blades as boundaries, the outlet of the air outlet chamber is opposite to the blade, and the inlet of the air inlet chamber is communicated with the inside of the cutting table through an elastic telescopic hose. Through the synchronous rotation of blade and flabellum, can form the negative pressure in order to adsorb and fix backlight source board in cutting gap and absorption gas groove department to when appearing the incision on backlight source board with outside air suction advance the cutting bed inside with the heat of taking away incision department production and blow to the blade through the guide duct, realize the cooling of incision department and blade.

Description

Backlight panel cutting device

Technical Field

The invention belongs to the technical field of cutting equipment, and particularly relates to a backlight source plate cutting device.

Background

The backlight is a light source installed at the back of the liquid crystal display, which can display various video images, and the light emission of the backlight can directly affect the visual effect of the display. When the production equipment of display, need use the backlight board of equidimension not according to the display of unidimensional, and the initial condition that the backlight board was processed is very big piece, consequently need use cutting device to cut backlight board, can cut into the shape and the size of demand with backlight board through the cutting.

At present, the backlight cutting device on the market has the following disadvantages in use:

1. the backlight source board is fixed by fixed-point pressing of objects such as an air cylinder and the like, so that LEDs on the surface of the backlight source are easily damaged;

2. the whole structure is simple, the function is single, and dust generated in the cutting process is inconvenient to collect;

3. the traditional grinding is used as a main cutting mode, a large amount of heat can be generated in the cutting process, and if the cutting opening or the cutter is not cooled in time, fluoride fluorescent powder with the characteristics of hygroscopicity and no high temperature resistance on the surface of the backlight source is easily damaged.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a backlight source plate cutting device to overcome the defects in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

a backlight board cutting device comprising:

the cutting table is hollow in the middle of the top surface of the base;

the XYZ three-axis moving mechanism is connected with the base; and

the sawing mechanism is connected with the XYZ three-axis moving mechanism and is positioned above the cutting table;

at least one cutting seam and a plurality of gas adsorption grooves are arranged in a sinking area of the top surface of the cutting table, and the gas adsorption grooves are symmetrically positioned on two sides of the cutting seam and adsorb a backlight source plate to be cut under negative pressure; the sawing mechanism comprises a blade and an air guide pipe internally provided with a fan blade, and the fan blade and the blade rotate synchronously; the air guide pipe is divided into an air outlet chamber and an air inlet chamber by taking the fan blades as boundaries, the outlet of the air outlet chamber is over against the blades, and the inlet of the air inlet chamber is communicated with the inside of the cutting table through an elastic telescopic hose.

In one embodiment disclosed in the present application, the XYZ three-axis movement mechanism includes, connected in sequence:

the longitudinal movement mechanism is used for realizing the Z-axis movement of the sawing mechanism;

the lifting mechanism is used for realizing Y-axis movement of the sawing mechanism; and

the transverse moving mechanism is used for realizing X-axis movement of the sawing mechanism;

wherein, the saw cutting mechanism is connected below the transverse moving mechanism.

In one embodiment disclosed in the present application, the saw mechanism is connected below the XYZ three-axis translation mechanism by a rotation mechanism;

the rotating mechanism is used for realizing the Y-axis rotation of the sawing mechanism and comprises a rotating cylinder and a hanging bracket fixedly connected with the working end of the rotating cylinder;

the air guide pipe is fixedly supported above the support plate at the lower end of the hanger, a transmission shaft is rotatably connected in the air guide pipe, one end of the transmission shaft is fixedly connected with the fan blades, and the other end of the transmission shaft penetrates through the air inlet chamber and extends to the outside of the air guide pipe to be connected with a small belt wheel;

the blade is fixedly installed on a second motor below the support plate to achieve rotation, a large belt wheel is connected to the output end of the second motor, and the large belt wheel is in transmission connection with the small belt wheel through a V-shaped belt.

In one embodiment disclosed in the present application, a circular hole with a cross-shaped clamping key is arranged in the middle of the blade;

the blade is fixedly connected with the output end of the second motor through the round hole.

In one embodiment of the present disclosure, the blade is a circular serrated blade.

In one embodiment of the present disclosure, the second motor is a dual-shaft motor;

the blade is fixedly connected with the first output end of the double-shaft motor, and the large belt wheel is fixedly connected with the second output end of the double-shaft motor.

In one embodiment disclosed by the application, an air collecting chamber communicated with the inside of the cutting table is connected to the outer side surface of the cutting table, and a first branch pipe is arranged above the air collecting chamber;

the inlet of the air inlet chamber is provided with two inlets which are respectively positioned at two sides of the transmission shaft, the two inlets are communicated through an annular pipe, and the farthest position of the annular pipe away from the air guide pipe is provided with a second branch pipe which extends downwards in an inclined mode;

two ends of the elastic telescopic hose are respectively communicated with the first branch pipe and the second branch pipe, and the small belt wheel is surrounded by the annular pipe.

In one embodiment disclosed herein, a first screen is removably mounted within the cutting table;

the interior of the cutting table is divided into a dust collecting chamber and a purifying chamber by the first filter screen;

the air collecting chamber is communicated with the purifying chamber.

In one embodiment disclosed in the present application, the air collecting chamber is further connected with an air supplementing pipe;

the air supplementing pipe is provided with an adjusting valve;

and a second filter screen is arranged at the inlet of the air supplementing pipe.

In one embodiment disclosed in the application, the cutting seams are provided with 3 equally spaced lines;

the gas adsorption grooves are perpendicular to the cutting seams and are distributed at equal intervals along the length direction of the cutting seams;

and a plurality of air suction holes communicated with the inside of the cutting table are formed in each adsorption air groove.

Compared with the prior art, the invention has the beneficial effects that:

1. through the synchronous rotation of the blade and the fan blades, on one hand, negative pressure can be formed at the cutting seams and the air adsorption grooves to adsorb and fix the backlight source plate to be cut, and when a cut appears on the backlight source plate, outside air is sucked into the cutting table through the cutting seams to take away heat generated at the cut, and meanwhile, the air is blown to the blade through the air guide pipe, so that the cooling of the cut and the blade is realized; on the other hand, dust generated in the cutting process can be sucked into the dust collection chamber along with the outside air, and the dust is filtered through the first filter screen, so that the dust is purified.

2. Through belt transmission, the second motor can drive the blade and the fan blades to synchronously rotate at a high speed, and the rotating speed of the fan blades is higher, so that outside air is sucked into the cutting table from the cutting seams and the air adsorption grooves, negative pressure is formed to adsorb and fix the backlight source plate to be cut in a sinking area on the top surface of the cutting table, and the LED on the surface of the backlight source is effectively prevented from being damaged; meanwhile, after external air passes through the elastic flexible hose, the air inlet chamber and the air outlet chamber from the inside of the cutting table in sequence, the external air is blown to the blade by positive pressure air through an outlet with the gradually reduced opening diameter of the air outlet chamber, and the blade is cooled, so that the cooling of the blade is realized.

3. The backlight source plate is sliced through the circular serrated blade, the temperature of the backlight source plate can be reduced to 30-50 ℃ from 80-100 ℃ in the traditional grinding process, the temperature rise of the notch of the backlight source plate is obviously reduced, and the damage of fluoride fluorescent powder on the surface of the backlight source is effectively prevented.

4. Through the suction effect that the flabellum produced when rotating, can be in cutting slit and absorption gas groove department can inhale the dirt room with the dust that produces in the cutting process when forming the negative pressure to filter in order to realize purifying via the first filter screen of detachable, and loosen the screw and can take out first filter screen in order to clear up and collect the processing to the dust, guaranteed this cutting device's long-term high-efficient operation.

5. Through the degree of opening that changes adjusting valve, can adjust the amount of wind that gets into the wind chamber via the air supply pipe to can provide sufficient amount of wind and blow to the blade via the air-out room of guide duct when cutting slit and absorption gas groove are waited to cut the backlight board and cover, effectively guarantee the cooling effect of blade, can adjust the negative pressure suction in cutting slit and absorption gas groove department simultaneously, avoid treating to cut the backlight board and cause the damage.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of the present invention at another angle;

FIG. 3 is a perspective view of the base;

FIG. 4 is a schematic perspective view of a first screen;

FIG. 5 is a schematic perspective view of the slide carriage, the rotating mechanism and the sawing mechanism;

FIG. 6 is a schematic perspective view of the slide carriage, the rotating mechanism and the sawing mechanism at another angle;

FIG. 7 is a schematic front view of the structure of FIG. 5;

FIG. 8 is a schematic sectional view taken along line A-A in FIG. 7;

FIG. 9 is a left side view of the hidden blade of FIG. 8;

fig. 10 is a perspective view of the blade.

The reference numerals are explained below:

100. a base 110, a cutting table 111, a cutting seam 112, an adsorption gas groove 120, an air collecting chamber 121, a first branch pipe 130, a first filter screen 131, an outer frame 132, a screen gauze plate 133, a screw 140, an air supplementing pipe 150, an adjusting valve 160 and a second filter screen;

200. a longitudinal moving mechanism 210 and a sliding block;

300. the lifting mechanism 310 comprises an L-shaped support plate;

400. a transverse moving mechanism 410, a first motor 420, a screw rod 430, a sliding seat 440 and a guide rod;

500. the device comprises a rotating mechanism 510, a rotating cylinder 520, a hanging bracket 521 and a carrier plate;

600. the sawing mechanism comprises 610 a blade 611, a round hole 620, a fan blade 630, an air guide pipe 640, an elastic telescopic hose 650, a transmission shaft 660, a small belt wheel 670, a second motor 680, a large belt wheel 690, a ring pipe 691 and a second branch pipe.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing and simplifying the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 10, the present invention provides a backlight plate cutting apparatus, including:

the cutting table comprises a base 100, wherein a hollow cutting table 110 is arranged in the middle of the top surface of the base;

an XYZ three-axis movement mechanism connected to the base 100; and

the sawing mechanism 600 is connected with the XYZ three-axis moving mechanism and is positioned above the cutting table 110;

wherein, at least one cutting slit 111 and a plurality of gas absorption grooves 112 are arranged in the sinking zone of the top surface of the cutting table 110, the gas absorption grooves 112 are symmetrically positioned at two sides of the cutting slit 111 and absorb the backlight source board to be cut (not shown in the figure) by negative pressure; the sawing mechanism 600 comprises a blade 610 and an air guide pipe 630 with a fan blade 620 mounted therein, wherein the fan blade 620 and the blade 610 rotate synchronously; the air duct 630 is divided into an air outlet chamber and an air inlet chamber by taking the fan blade 620 as a boundary, the outlet of the air outlet chamber is opposite to the blade 610, and the inlet of the air inlet chamber is communicated with the inside of the cutting table 110 through an elastic telescopic hose 640.

Referring to fig. 1 and 2, the XYZ triaxial movement mechanism includes, connected in sequence:

the longitudinal movement mechanism 200 is used for realizing the Z-axis movement of the sawing mechanism 600;

the lifting mechanism 300 is used for realizing the Y-axis movement of the sawing mechanism 600; and

a traverse mechanism 400 for realizing the X-axis movement of the sawing mechanism 600;

wherein, the sawing mechanism 600 is connected below the traversing mechanism 400.

Specifically, the longitudinal movement mechanism 200 includes a pair of rodless cylinders respectively located at two sides of the cutting table 110, and two ends of the rodless cylinders are respectively fixedly connected with the base 100; the lifting mechanism 300 comprises a pair of symmetrically arranged double-rod cylinders, the cylinder bodies of the double-rod cylinders are fixedly connected with the sliding blocks 210 of the rodless cylinders, and the piston rods of the double-rod cylinders are connected with L-shaped support plates 310; the transverse moving mechanism 400 comprises a first motor 410, a screw rod 420 and a sliding seat 430, wherein the first motor 410 is fixedly arranged on one L-shaped support plate 310, the screw rod 420 is rotatably connected between the two L-shaped support plates 310, one end of the screw rod 420 penetrates through one L-shaped support plate 310 and then is in transmission connection with the output end of the first motor 410, and the sliding seat 430 is in transmission connection with the screw rod 420; the saw cutting mechanism 600 is suspended below the slide carriage 430. That is, the sawing mechanism 600 can move along the Z axis, the Y axis, and the X axis in sequence to realize feeding by driving the vertical movement mechanism 200, the lifting mechanism 300, and the horizontal movement mechanism 400, respectively, so as to cut the backlight panel to be cut on the cutting table 110, and further cut the backlight panel into a desired shape and size.

The traversing mechanism 400 further includes a pair of guide rods 440 respectively disposed in parallel at two sides of the lead screw 420, and the two ends of the guide rods 440 are fixedly connected between the two L-shaped support plates 310 after sliding through the sliding base 430. The stability of the slider 430 during movement is improved by the guiding action of the guide rod 440.

Referring to fig. 7 to 9, the saw mechanism 600 is connected to the lower part of the XYZ triaxial movement mechanism (i.e., the slide 430 of the traverse mechanism 400) through the rotation mechanism 500; the rotating mechanism 500 is used for realizing the Y-axis rotation of the sawing mechanism 600, and comprises a rotating cylinder 510 and a hanger 520 fixedly connected with the working end of the rotating cylinder; the air guide pipe 630 is fixedly supported above the carrier plate 521 at the lower end of the hanger 520, a transmission shaft 650 is rotatably connected in the air guide pipe 630, one end of the transmission shaft 650 is fixedly connected with the fan blade 620, and the other end of the transmission shaft passes through the air inlet chamber and extends to the outside of the air guide pipe 630 to be connected with a small belt pulley 660; the blade 610 is rotated by a second motor 670 fixedly mounted below the carrier plate 521, the output end of the second motor 670 is connected with a large belt pulley 680, and the large belt pulley 680 is in transmission connection with the small belt pulley 660 through a V-shaped belt. That is, through belt transmission, the second motor 670 can drive the blade 610 and the fan blade 620 to synchronously rotate at a high speed, and the rotating speed of the fan blade 620 is higher, so that the outside air is sucked into the cutting table 110 from the cutting slit 111 and the air suction groove 112, and negative pressure is formed to suck and fix the backlight panel to be cut in the sinking area of the top surface of the cutting table 110, thereby effectively avoiding the LED on the surface of the backlight source from being damaged; meanwhile, after the outside air passes through the elastic flexible hose 640, the air inlet chamber and the air outlet chamber in sequence from the inside of the cutting table 110, the outside air is blown to the blade 610 by positive pressure air through an outlet with the gradually reduced diameter of the air outlet chamber, so that the blade 610 is cooled.

Referring to fig. 10, a circular hole 611 with a cross key is formed in the middle of the blade 610, and the blade 610 is fixedly connected to the output end of the second motor 670 through the circular hole 611. Therefore, the blade 610 is more firmly connected with the second motor 670, and the phenomenon of rotation loss can not occur.

In this embodiment, blade 610 is a circular serrated blade. Practice proves that the backlight source plate is sliced by the circular serrated blade, the temperature of the backlight source plate can be reduced to 30-50 ℃ from 80-100 ℃ in the traditional grinding process, the temperature rise of the notch of the backlight source plate is obviously reduced, and the damage of fluoride fluorescent powder on the surface of the backlight source is effectively prevented.

In this embodiment, the second motor 670 is a dual-shaft motor (i.e., a motor having dual output shafts), the blade 610 is fixedly connected to a first output end of the dual-shaft motor, and the large pulley 680 is fixedly connected to a second output end of the dual-shaft motor.

Referring to fig. 2 and 3, an outer side surface of the cutting table 110 is connected with an air collecting chamber 120 communicated with the inside thereof, and a first branch pipe 121 is arranged above the air collecting chamber 120; referring to fig. 6 to 9, two inlets of the air inlet chamber are arranged on two sides of the transmission shaft 650, respectively, the two inlets are communicated through an annular pipe 690, and a second branch pipe 691 extending obliquely downwards is arranged at the farthest position of the annular pipe 690 from the air guide pipe 630; the elastic extensible hose 640 has two ends respectively connected to the first branch pipe 121 and the second branch pipe 691, and the small pulley 660 is enclosed by the annular pipe 690. That is to say, the air inlet chamber enters air through the annular pipe 690, so that the air inlet amount is ensured to be sufficient, and the occupied space is reduced.

Referring to fig. 3 and 4, the first filter screen 130 is detachably installed in the cutting table 110, the inside of the cutting table 110 is divided into a dust collecting chamber and a purifying chamber by the first filter screen 130, and the air collecting chamber 120 is communicated with the purifying chamber. Specifically, the outer side of the cutting table 110 facing away from the air collecting chamber 120 is provided with a strip socket (not shown in the figure); the first filter 130 comprises an outer frame 131 with a handle and a screen plate 132 connected to the inner part of the outer frame 131, wherein the thickness of the outer frame 131 is larger than that of the screen plate 132 (so that the screen plate 132 can collect dust and take out the first filter 130 for cleaning); the outer frame 131 passes through the strip slot and is in sliding and sealing fit with the inner side of the cutting table 110, and can be locked on the outer side of the cutting table 110 through a screw 133. That is to say, through the suction effect that produces when flabellum 620 rotates, can form the dust collecting chamber with the dust that produces in the cutting process when cutting seam 111 and absorption gas groove 112 department to filter in order to realize purifying through the first filter screen 130 of detachable, and loosen screw 133 and can take out first filter screen 130 in order to clear up and collect the processing to the dust, guaranteed this cutting device's long-term high-efficient operation.

In order to ensure that enough air is blown to the blades 610 to cool the blades, the air collecting chamber 120 is further connected with an air supplementing pipe 140, the air supplementing pipe 140 is provided with a regulating valve 150, and the inlet of the air supplementing pipe 140 is provided with a second filter screen 160. That is to say, through changing the degree of opening of adjusting valve 150, can adjust the amount of wind that gets into wind-collecting chamber 120 via air supply pipe 140 to can provide sufficient amount of wind and blow to blade 610 via the air-out room of guide duct 630 when cutting seam 111 and absorption gas groove 112 are covered by the backlight board that waits to cut, effectively guarantee the cooling effect of blade 610, can adjust the negative pressure suction in cutting seam 111 and absorption gas groove 112 department simultaneously, avoid treating the backlight board that cuts and cause the damage.

Referring to fig. 3, in the present embodiment, 3 cutting slots 111 are provided at equal intervals, the gas adsorbing slots 112 are perpendicular to the cutting slots 111 and are distributed at equal intervals along the length direction of the cutting slots 111, and a plurality of gas suction holes communicated with the inside of the cutting table 110 are formed in each gas adsorbing slot 112. That is, the blade 610 is controlled by the XYZ three-axis movement mechanism and rotation mechanism 500 to align different cutting slits 111, thereby cutting the backlight panel into a desired shape and size.

When the cutting machine works, the backlight panel to be cut is placed in the sunken area on the top surface of the cutting table 110, the second motor 670 is started to drive the blade 610 and the fan blade 620 to synchronously rotate at a high speed, the fan blade 620 rotates to evacuate the interior of the cutting table 110 through the elastic telescopic hose 640, so that negative pressure is generated at the cutting slit 111 and the air absorption groove 112 to absorb the backlight panel to be cut so as to complete fixation, then the blade 610 is controlled to be aligned to different cutting slits 111 through the XYZ three-axis moving mechanism and the rotating mechanism 500 to cut the backlight panel, when a cut occurs on the backlight panel, outside air is sucked into the interior of the cutting table 110 through the cutting slit 111 to take away heat generated at the cut, dust generated in the cutting process is sucked into the dust collection chamber to be filtered by the first filter screen 130 so as to be purified, the air entering the purification chamber is blown to the blade 610 through the air collection chamber 120 and the elastic telescopic hose 640 to the air guide pipe 630 so as to cool the dust, the backlight plate cut into a desired shape and size is attached to the adsorption gas tank 112 all the time without shaking, and finally the second motor 670 stops rotating to facilitate taking out the cut backlight plate.

In summary, according to the present invention, by the synchronous rotation of the blade 610 and the fan blade 620, on one hand, negative pressure is formed at the cutting slit 111 and the air absorption groove 112 to absorb and fix the backlight panel to be cut, and when a cut occurs on the backlight panel, external air is sucked into the cutting table 110 through the cutting slit 111 to take away heat generated at the cut, and is blown to the blade 610 through the air guide tube 630, so as to cool the cut and the blade 610; on the other hand, the dust generated in the cutting process can be sucked into the dust collection chamber along with the outside air, and the dust is filtered through the first filter screen 130, so that the dust is purified.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.

Claims

1. A backlight board cutting device, comprising:

the cutting table is hollow in the middle of the top surface of the base;

the XYZ three-axis moving mechanism is connected with the base; and

2. The backlight plate cutting apparatus according to claim 1, wherein the XYZ three-axis movement mechanism comprises, connected in series:

3. The backlight board cutting device according to claim 1 or 2, wherein:

the sawing mechanism is connected below the XYZ three-axis moving mechanism through a rotating mechanism;

4. The backlight board cutting device according to claim 3, wherein:

a round hole with a cross clamping key is formed in the middle of the blade;

5. The backlight plate cutting device according to claim 4, wherein the blade is a circular serrated blade.

6. The backlight board cutting device according to claim 4 or 5, wherein:

the second motor is a double-shaft motor;

7. The backlight board cutting device according to claim 3, wherein:

an air collecting chamber communicated with the inside of the cutting table is connected to the outer side face of the cutting table, and a first branch pipe is arranged above the air collecting chamber;

two ends of the elastic flexible hose are respectively communicated with the first branch pipe and the second branch pipe, and the small belt wheel is enclosed by the annular pipe.

8. The backlight board cutting device according to claim 7, wherein:

a first filter screen is detachably arranged in the cutting table;

the air collecting chamber is communicated with the purifying chamber.

9. The backlight board cutting device according to claim 7 or 8, wherein:

the air collecting chamber is also connected with an air supplementing pipe;

the air supplementing pipe is provided with an adjusting valve;

10. The backlight board cutting device according to claim 1, wherein:

3 cutting seams are arranged at equal intervals;