CN112976159A

CN112976159A - Plastic light guide plate die-cutting machine and die-cutting processing method

Info

Publication number: CN112976159A
Application number: CN202110266045.3A
Authority: CN
Inventors: 文鑫; 易兴旺
Original assignee: Individual
Current assignee: Baoding Xinhai Sunlight Board Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-06-18
Anticipated expiration: 2041-03-11
Also published as: CN112976159B

Abstract

The invention relates to a plastic light guide plate die-cutting machine and a die-cutting processing method, which comprise a shell, a conveying belt, a die-cutting device, a positioning device and a pressing device, wherein the conveying belt is installed at the left end of the shell, the positioning device and the die-cutting device are installed in the middle of the shell, the die-cutting device and the positioning device are arranged in an up-and-down corresponding mode, and the pressing device is installed at the right end of the shell. The invention can solve the problems that the surface of the light guide plate can be damaged due to over-compression when a clamp is compressed, the positioning function can not be realized when the clamp is compressed loosely, and the position deviation can be generated during cutting.

Description

Plastic light guide plate die-cutting machine and die-cutting processing method

Technical Field

The invention relates to the technical field of light guide plate production and processing, in particular to a plastic light guide plate die-cutting machine and a die-cutting processing method.

Background

The light guide plate is characterized in that light guide points are printed on the bottom surface of an optical acrylic plate by using an optical acrylic/PC plate and then using a high-tech material with extremely high refractive index and no light absorption through laser engraving, V-shaped cross grid engraving and UV screen printing technologies. The optical-grade acrylic sheet is used for absorbing the light emitted from the lamp to stay on the surface of the optical-grade acrylic sheet, when the light irradiates each light guide point, the reflected light can be diffused towards each angle, and then the reflected light is damaged and is emitted from the front surface of the light guide plate. The light guide plate can uniformly emit light through various light guide points with different densities and sizes. The reflecting sheet is used for reflecting the light exposed from the bottom surface back to the light guide plate to improve the utilization efficiency of the light, and under the condition of the same area light-emitting brightness, the light-emitting efficiency is high and the power consumption is low.

In the process of die cutting the light guide plate, the light guide plate is usually placed on a platform and then is pressed by a clamp, and then is cut off by a die cutting knife, however, the mode often has some problems in the actual operation process:

1. when the clamp is pressed, the surface of the light guide plate can be damaged due to excessive pressing, when the pressing is loose, the positioning function can not be achieved, and the situation of position deviation can occur during cutting;

2. the conventional die cutter generally cuts the sheet material by using a single straight-drop cutting method, but the single cutting easily causes deformation of the sheet material in actual operation and shortens the service life of the die cutter.

Disclosure of Invention

Technical problem to be solved

The invention can solve the problems that the surface of the light guide plate can be damaged due to over-compression when a clamp is compressed, the positioning function can not be realized when the clamp is compressed loosely, and the position deviation can be generated during cutting.

(II) technical scheme

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a plastics light guide plate cross cutting machine, includes shell, conveyer belt, cutting device, positioner and pushes down the device, and the conveyer belt is installed to the left end of shell, and the mid-mounting of shell has positioner, cutting device, and cutting device, positioner correspond the arrangement from top to bottom, and the right-hand member of shell is installed and is pushed down the device.

The cross cutting device include the mount, connect the cylinder, the protective housing, pushing mechanism, the framework, die-cutting rule one, die-cutting rule two, coupling mechanism, reciprocating motion mechanism, the mount is installed on the shell, be connected with between mount and the protective housing and be connected with the connection cylinder, be connected with pushing mechanism between protective housing and the framework, die-cutting rule one is evenly installed backward in the past to the lower extreme of framework, the framework passes through sliding fit's mode and is connected with die-cutting rule two, and die-cutting rule one, die-cutting rule two is from preceding backward interval arrangement, be connected with coupling mechanism between the die-cutting rule two, be connected with reciprocating motion mechanism between framework and the protective housing.

Reciprocating motion mechanism including reciprocating cylinder, synchronous board, a power supply, first copper, the second copper, insulating spring and wire, reciprocating cylinder is installed to the lateral wall of framework, synchronous board is installed to reciprocating cylinder's ejecting end, synchronous board is connected for sliding fit from top to bottom with the protective housing, the work groove has been seted up to the rear end of framework, the power is installed to the upper end in work groove, first copper is installed to the front end upside in work groove, the front end downside in work groove is connected with the second copper through sliding fit's mode, and even there is insulating spring between second copper and the work groove, insulating spring plays the effect that resets, reciprocating cylinder, a power supply, first copper, through wire series connection between the second copper.

The concrete during operation drives die-cutting rule one, die-cutting rule two is whole to descend through connecting the cylinder to handle the light guide plate cut mark, later, connect the cylinder and stop descending, drive the framework through pushing mechanism, die-cutting rule one descends, thereby cut into in the light guide plate, at this moment, die-cutting rule two can not descend under coupling mechanism's traction, when receiving extrusion second copper and first copper contact, thereby reciprocal cylinder circular telegram drives the first seesaw of die-cutting rule that cuts into in the light guide plate, thereby cut off the processing to the light guide plate.

The positioning device comprises a fixed frame, an air cavity, an air suction pump, a cutter layer and a jacking mechanism, sealing mechanism, the angle board, the bearing board, adjustment mechanism and angle cylinder, fixed frame is installed on the shell, the air cavity has been seted up to the upper end of fixed frame, the air cavity communicates with each other with the aspirator pump and is connected, the aspirator pump is installed on the lateral wall of fixed frame, the cutter layer is installed to the upper end of fixed frame, the inner groovy has been seted up to the left end on cutter layer, install the mechanism that backs down on the inner groovy, air cavity internally mounted has sealing mechanism, corresponding hole has evenly been seted up to the upper end of air cavity, evenly set up the gas pocket on the cutter layer, the gas pocket communicates with corresponding hole, the right-hand member of fixed frame is connected with the angle board through the round pin axle, the upper end of angle board is installed and is supported the board, install adjustment mechanism.

Sealing mechanism include extrusion piece, grid plate, sealed post, built-in spring, the extrusion piece is connected for sliding fit with fixed frame, is connected with built-in spring between extrusion piece and the fixed frame, the grid plate is installed to the lower extreme of extrusion piece, evenly installs sealed post on the grid plate, and initial position's sealed plunger is inside corresponding the hole.

The concrete during operation drives angle board angle modulation through the angle cylinder and laminates mutually until the lower terminal surface of bearing board and light guide plate, and at this moment, thereby the board that supports on the angle board will extrude the piece downwards and drive the grid board, sealed post descends, and at this moment, sealed post no longer blocks up and corresponds the hole, can ventilate smoothly between air cavity and the gas pocket, thereby at this moment, inhale through the aspirator pump and inhale the lower terminal surface of light guide plate and fix a position on fixed frame.

Preferably, pushing mechanism including promote cylinder, sliding block, promote the cylinder and install on the protective housing, promote the ejecting end of cylinder and install the sliding block, be sliding fit connection between sliding block and the framework.

Preferably, the connecting mechanism comprises a connecting plate, an insulating plate, a connecting rod and a movable block, the connecting plate is connected between the second die-cutting rule, the insulating plate is installed at the rear end of the connecting plate, the connecting rod is installed in the middle of the connecting plate, the movable block is installed at the upper end of the connecting rod, and the movable block is connected with the protective shell in a sliding fit mode.

Preferably, the ejection mechanism include two ejection plates and two reset springs, the inner grove is connected with two ejection plates through the round pin axle in both ends about, is connected with reset spring between ejection plate and the inner grove, two ejection plates between the connection cloth, the setting of connecting portion plays the effect of connecting to two ejection plates, prevents to block the condition of jam appearing in this position of ejection plate when the light guide plate pushes away on a left side simultaneously.

Preferably, the adjusting mechanism comprises a movable plate, a connecting spring and a connecting roller, a sliding groove is formed in the supporting plate and is connected with the movable plate in a sliding fit mode, the connecting spring is connected between the sliding groove and the movable plate, and the connecting roller is uniformly arranged on the movable plate through a pin shaft.

Preferably, the pressing device comprises a fixing rod, a lower pressing plate and a working spring, the fixing rod is installed on the shell, the lower end of the fixing rod is hinged with the middle of the lower pressing plate, and the fixing rod and the left end of the lower pressing plate are connected with the working spring.

In addition, the invention also provides a die cutting processing method of the plastic light guide plate die cutting machine, which comprises the following steps of;

s1, conveying the light guide plate to a proper position rightwards through the conveying belt, wherein the right end of the light guide plate is located at the upper end of the cutter layer;

s2, the angle cylinder drives the angle plate to adjust the angle until the bearing plate is jointed with the lower end face of the light guide plate, at this time, the sealing mechanism is pressed down by extrusion, at this time, the air cavity and the air hole are smoothly ventilated, and the lower end face of the light guide plate is sucked on the fixing frame by the suction of the suction pump so as to be positioned;

s3, the protective shell, the first die-cutting knife and the second die-cutting knife are driven to integrally descend through the connecting cylinder, so that the cut mark of the light guide plate is processed, then the first die-cutting knife is driven to descend through the pushing mechanism, at the moment, the second die-cutting knife does not descend any more, and when the second copper plate is extruded to be in contact with the first copper plate, the reciprocating cylinder is electrified to drive the first die-cutting knife to move back and forth, so that the light guide plate is cut off;

s4, after cutting, the die cutting device resets, the angle plate resets, at the moment, the air suction stops, and the right end of the cut light guide plate is pressed down under the elasticity of the pressing device, so that the cut light guide plate is thoroughly separated;

and S5, taking away the cut light guide plate, and repeating the steps S1-S4 to perform die cutting on the next light guide plate.

(III) advantageous effects

1. According to the plastic light guide plate die-cutting machine and the die-cutting processing method, the lower end face of the light guide plate is sucked in an air suction mode, the situation that damage is caused by pressing or position deviation is caused by loose pressing is avoided, the light guide plate is cut off by adopting a design concept of integrating cut marks, multi-point type cut-in and circular cutting during cutting, and the possibility that deformation is caused by direct falling type cutting and the service life of a cutter is shortened is greatly reduced;

2. according to the plastic light guide plate die-cutting machine and the die-cutting processing method, the die-cutting device firstly descends through the first die-cutting knife and the second die-cutting knife together to perform cut mark processing on the upper end of the light guide plate, then descends through the first die-cutting knife independently to insert into the light guide plate in a multi-point mode, compared with integral downward cutting, the multi-point mode is difficult to insert, and then the first die-cutting knife reciprocates back and forth to cut off the light guide plate, so that the service life is prolonged, and the cutting difficulty and the deformation possibility are reduced;

3. according to the plastic light guide plate die-cutting machine and the die-cutting processing method, the positioning device is used for positioning in an air suction mode, corresponding holes in the air cavity are in a blocking state under the condition of no positioning, the condition of early suction during the conveying of the light guide plate is avoided, and the air suction design can also suck and remove some particle impurities on the cutter layer, so that the condition that the surface of the conveyed light guide plate is scratched by the particle impurities is avoided.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is an overall cross-sectional view of the present invention;

FIG. 2 is a cross-sectional view (from right to left) of the die cutting apparatus of the present invention;

FIG. 3 is a cross-sectional view of the positioning device of the present invention;

FIG. 4 is a schematic view of a first configuration of the positioning device of the present invention;

FIG. 5 is a second schematic view of the positioning device of the present invention;

FIG. 6 is a schematic view of the structure between the extrusion block, the grid plate and the sealing post according to the present invention;

FIG. 7 is an enlarged view of a portion of the invention at X of FIG. 2;

fig. 8 is a schematic view of the placement of the light guide plate.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings. In this process, the width of the lines or the size of the components in the drawings may be exaggerated for clarity and convenience of description.

The following terms are defined based on the functions of the present invention, and may be different depending on the intention of the user or the operator or the convention. Therefore, these terms are defined based on the entire contents of the present specification.

As shown in fig. 1 to 8, in order to achieve the above object, the present invention adopts the following technical solutions: the utility model provides a plastics light guide plate cross cutting machine, includes shell 1, conveyer belt 2, cutting device 3, positioner 4 and pushes down device 5, and conveyer belt 2 is installed to the left end of shell 1, and the mid-mounting of shell 1 has positioner 4, cutting device 3, and cutting device 3, positioner 4 are for corresponding the arranging from top to bottom, and pushing down device 5 is installed to the right-hand member of shell 1.

The die cutting device 3 include mount 31, connect cylinder 32, protective housing 33, pushing mechanism 34, framework 35, a cutting rule 36, a cutting rule two 37, coupling mechanism 38, reciprocating motion mechanism 39, mount 31 is installed on shell 1, be connected with between mount 31 and the protective housing 33 and be connected with connecting cylinder 32, be connected with pushing mechanism 34 between protective housing 33 and the framework 35, a cutting rule 36 is evenly installed backward to the lower extreme of framework 35 in the past, framework 35 is connected with a cutting rule two 37 through sliding fit's mode, and a cutting rule 36, a cutting rule two 37 is from preceding backward interval arrangement, be connected with coupling mechanism 38 between a cutting rule two 37, be connected with reciprocating motion mechanism 39 between framework 35 and the protective housing 33.

The reciprocating mechanism 39 comprises a reciprocating cylinder 391, a synchronous plate 392, a power supply 393, a first copper plate 394, a second copper plate 397, an insulating spring 395 and a wire 396, the reciprocating cylinder 391 is installed on the side wall of the frame 35, the synchronous plate 392 is installed at the ejection end of the reciprocating cylinder 391, the synchronous plate 392 is connected with the protective shell 33 in a vertically sliding fit manner, a working groove is formed in the rear end of the frame 35, the power supply 393 is installed at the upper end of the working groove, the first copper plate 394 is installed on the upper side of the front end of the working groove, the lower side of the front end of the working groove is connected with the second copper plate 397 in a sliding fit manner, the insulating spring 395 is connected between the second copper plate 397 and the working groove, the insulating spring 395 plays a role in resetting, the reciprocating cylinder 391, the power supply 393, the first copper plate 394 and the second copper plate 397 are connected in series through the wire 396, and during specific work, the first die-cutting knife 36 and the second, therefore, the connecting cylinder 32 stops descending after the light guide plate is subjected to the cutting process, the frame body 35 and the first die-cutting knife 36 are driven by the pushing mechanism 34 to descend, so that the light guide plate is cut, at the moment, the second die-cutting knife 37 cannot descend under the traction of the connecting mechanism 38, and when the second copper plate 397 is extruded to be in contact with the first copper plate 394, the reciprocating cylinder 391 is electrified, so that the first die-cutting knife 36 cut into the light guide plate is driven to move back and forth, and the light guide plate is subjected to the cutting process.

The pushing mechanism 34 comprises a pushing cylinder 341 and a sliding block 342, the pushing cylinder 341 is installed on the protective shell 33, the sliding block 342 is installed at the ejection end of the pushing cylinder 341, the sliding block 342 is connected with the frame body 35 in a sliding fit manner, the pushing mechanism 34 ensures that the frame body 35 can slide back and forth while descending, and the situation that the frame body 35 is clamped is avoided.

Connection mechanism 38 include connecting plate 381, insulation board 382, connecting rod 383 and movable block 384, be connected with connecting plate 381 between the die-cutting rule two 37, insulation board 382 is installed to the rear end of connecting plate 381, the mid-mounting of connecting plate 381 has connecting rod 383, movable block 384 is installed to the upper end of connecting rod 383, movable block 384 is connected for sliding fit with protective housing 33, during specific work, drive framework 35 through pushing mechanism 34, a die-cutting rule 36 descends, thereby cut into in the light guide plate, at this moment, die-cutting rule two 37 can not descend under the traction of connecting plate 381, but because movable block 384 is connected for sliding fit with protective housing 33, framework 35 can slide around smoothly, the condition that framework 35 blocked has been avoided.

The positioning device 4 comprises a fixing frame 41, an air cavity 42, an air suction pump 43, a cutter layer 44, a top opening mechanism 45, a sealing mechanism 46, an angle plate 47, a bearing plate 48, an adjusting mechanism 49 and an angle cylinder 50, wherein the fixing frame 41 is arranged on the shell 1, the upper end of the fixing frame 41 is provided with the air cavity 42, the air cavity 42 is communicated and connected with the air suction pump 43, the air suction pump 43 is arranged on the outer side wall of the fixing frame 41, the upper end of the fixing frame 41 is provided with the cutter layer 44, the left end of the cutter layer 44 is provided with an inner groove, the top opening mechanism 45 is arranged on the inner groove, the sealing mechanism 46 is arranged inside the air cavity 42, the upper end of the air cavity 42 is uniformly provided with corresponding holes, the cutter layer 44 is uniformly provided with air holes communicated with the corresponding holes, the right end of the fixing frame 41 is connected with the angle plate 47 through a pin, an adjusting mechanism 49 is mounted on the bearing plate 48, and an angle cylinder 50 is connected between the fixed frame 41 and the angle plate 47 through a pin shaft.

The sealing mechanism 46 comprises an extrusion block 461, a grid plate 462, a sealing post 463 and an internal spring 464, wherein the extrusion block 461 is connected with the fixed frame 41 in a sliding fit manner, the internal spring 464 is connected between the extrusion block 461 and the fixed frame 41, the grid plate 462 is installed at the lower end of the extrusion block 461, the sealing posts 463 are evenly installed on the grid plate 462, the sealing posts 463 at the initial positions are blocked in the corresponding holes, when the sealing mechanism works, the angle cylinder 50 drives the angle plate 47 to adjust the angle until the supporting plate 48 is attached to the lower end surface of the light guide plate, and at this time, the abutment plate on the angle plate 47 presses the pressing block 461 downward to bring the mesh plate 462 and the sealing post 463 down, at which time, the sealing post 463 is no longer blocking the corresponding hole, and the air chamber 42 and the air hole can be smoothly ventilated, at this time, the lower end surface of the light guide plate is sucked to the fixing frame 41 by suction of the suction pump 43 to be positioned.

The ejection mechanism 45 include two ejection plates 451 and two reset springs 452, the left and right ends of the inner groove are connected with the two ejection plates 451 through pin shafts, the reset springs 452 are connected between the ejection plates 451 and the inner groove, the connection cloth is connected between the two ejection plates 451, when the light guide plate is positioned, the two ejection plates 451 are horizontally arranged after being pressed by the light guide plate, at the moment, the ejection plates can serve as knife plates, after the light guide plate is cut off, when the pressing device 5 presses the right end of the cut-off light guide plate, at the moment, the ejection plates 451 upwards eject under the elasticity of the reset springs 452 to eject the left end of the cut-off light guide plate, and the light guide plate is thoroughly disconnected.

The adjusting mechanism 49 includes a movable plate 491, a connecting spring 492 and a connecting roller 493, a sliding groove is formed in the supporting plate 48, the sliding groove is connected with the movable plate 491 in a sliding fit manner, the connecting spring 492 is connected between the sliding groove and the movable plate 491, the connecting roller 493 is uniformly installed on the movable plate 491 through a pin shaft, during specific work, when the light guide plate is positioned, the connecting roller 493 is hidden in the sliding groove under the extrusion of the light guide plate, and when the right end of the light guide plate is pressed down to support the left end after being cut off, the connecting roller 493 is jacked up outwards under the action of the connecting spring 492, so that the cut-off light guide plate can slide downwards in an auxiliary manner.

The pressing device 5 comprises a fixing rod 51, a pressing plate 52 and a working spring 53, the fixing rod 51 is installed on the shell 1, the lower end of the fixing rod 51 is hinged with the middle of the pressing plate 52, the left ends of the fixing rod 51 and the pressing plate 52 are connected with the working spring 53, when the light guide plate is not cut off, the pressing plate 52 is in a horizontal state under the extrusion of the light guide plate, and the right end of the cut light guide plate is pressed down by the working spring 53 after the light guide plate is cut off.

s1, conveying the light guide plate to a proper position rightwards through the conveying belt 2, wherein the right end of the light guide plate is located at the upper end of the cutter layer 44;

s2, the angle cylinder 50 drives the angle plate 47 to adjust the angle until the bearing plate 48 is attached to the lower end face of the light guide plate, at this time, the sealing mechanism 46 is pressed, at this time, the air cavity 42 and the air holes are smoothly ventilated, and the lower end face of the light guide plate is sucked on the fixing frame 41 by the suction of the suction pump 43 to be positioned;

s3, the protective shell 33, the first die-cutting knife 36 and the second die-cutting knife 37 are driven to integrally descend through the connecting air cylinder 32, so that the light guide plate is subjected to cut mark processing, then the first die-cutting knife 36 is driven to descend through the pushing mechanism 34, at the moment, the second die-cutting knife 37 does not descend any more, when the second copper plate 397 is extruded to be in contact with the first copper plate 394, the reciprocating air cylinder 391 is electrified, so that the first die-cutting knife 36 is driven to move back and forth, and therefore the light guide plate is subjected to cutting processing;

s4, after cutting, the die cutting device 3 resets, the angle plate 47 resets, at the moment, the air suction stops, and the right end of the cut light guide plate is pressed down under the elasticity of the pressing device 5, so that the cut light guide plate is thoroughly separated;

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a plastics light guide plate cross cutting machine, includes shell (1), conveyer belt (2), cutting device (3), positioner (4) and pushes down device (5), its characterized in that: the left end of the shell (1) is provided with the conveying belt (2), the middle part of the shell (1) is provided with the positioning device (4) and the die cutting device (3), the die cutting device (3) and the positioning device (4) are arranged in an up-down corresponding mode, and the right end of the shell (1) is provided with the pressing device (5);

the die cutting device (3) comprises a fixing frame (31), a connecting cylinder (32), a protective shell (33), a pushing mechanism (34), a frame body (35), a first die cutting knife (36), a second die cutting knife (37), a connecting mechanism (38) and a reciprocating moving mechanism (39), wherein the fixing frame (31) is installed on the shell (1), the connecting cylinder (32) is connected between the fixing frame (31) and the protective shell (33), the pushing mechanism (34) is connected between the protective shell (33) and the frame body (35), the first die cutting knife (36) is uniformly installed at the lower end of the frame body (35) from front to back, the frame body (35) is connected with the second die cutting knife (37) in a sliding fit manner, the first die cutting tools (36) and the second die cutting tools (37) are arranged at intervals from front to back, a connecting mechanism (38) is connected between the second die cutting tools (37), and a reciprocating moving mechanism (39) is connected between the frame body (35) and the protective shell (33);

the reciprocating mechanism (39) comprises a reciprocating cylinder (391), a synchronous plate (392), a power supply (393), a first copper plate (394), a second copper plate (397), an insulating spring (395) and a lead (396), wherein the reciprocating cylinder (391) is installed on the side wall of the frame body (35), the synchronous plate (392) is installed at the ejection end of the reciprocating cylinder (391), the synchronous plate (392) is connected with the protective shell (33) in a vertically sliding fit manner, a working groove is formed in the rear end of the frame body (35), the power supply (393) is installed at the upper end of the working groove, the first copper plate (394) is installed on the upper side of the front end of the working groove, the lower side of the front end of the working groove is connected with the second copper plate (397) in a sliding fit manner, an insulating spring (395) is connected between the second copper plate (397) and the working groove, and the reciprocating cylinder (391), the power supply (393), the first copper plate (394) and the second copper plate (397) are connected in series through a conducting wire (396);

the positioning device (4) comprises a fixing frame (41), an air cavity (42), an air suction pump (43), a cutter layer (44), a jacking mechanism (45), a sealing mechanism (46), an angle plate (47), a bearing plate (48), an adjusting mechanism (49) and an angle cylinder (50), wherein the fixing frame (41) is installed on the shell (1), the air cavity (42) is formed in the upper end of the fixing frame (41), the air cavity (42) is communicated and connected with the air suction pump (43), the air suction pump (43) is installed on the outer side wall of the fixing frame (41), the cutter layer (44) is installed at the upper end of the fixing frame (41), a groove is formed in the left end of the cutter layer (44), the jacking mechanism (45) is installed on the inner groove, the sealing mechanism (46) is installed inside the air cavity (42), corresponding holes are uniformly formed in the upper end of the air cavity (42), and air holes are uniformly formed, the air holes are communicated with corresponding holes, the right end of the fixing frame (41) is connected with an angle plate (47) through a pin shaft, the upper end of the angle plate (47) is provided with a supporting plate (48), the side wall of the angle plate (47) is provided with a supporting plate (48), the supporting plate (48) is provided with an adjusting mechanism (49), and an angle cylinder (50) is connected between the fixing frame (41) and the angle plate (47) through a pin shaft;

sealing mechanism (46) including extrusion piece (461), net board (462), sealing post (463), built-in spring (464), extrusion piece (461) is connected for sliding fit with fixed frame (41), be connected with built-in spring (464) between extrusion piece (461) and the fixed frame (41), net board (462) is installed to the lower extreme of extrusion piece (461), evenly install sealing post (463) on net board (462), and initial position sealing post (463) block up inside corresponding hole.

2. The die cutting machine for plastic light guide plates according to claim 1, characterized in that: the pushing mechanism (34) comprises a pushing cylinder (341) and a sliding block (342), the pushing cylinder (341) is installed on the protective shell (33), the sliding block (342) is installed at the ejection end of the pushing cylinder (341), and the sliding block (342) is connected with the frame body (35) in a sliding fit mode.

3. The die cutting machine for plastic light guide plates according to claim 1, characterized in that: the connecting mechanism (38) comprises a connecting plate (381), an insulating plate (382), a connecting rod (383) and a movable block (384), the connecting plate (381) is connected between the second die-cutting rule (37), the insulating plate (382) is installed at the rear end of the connecting plate (381), the connecting rod (383) is installed in the middle of the connecting plate (381), the movable block (384) is installed at the upper end of the connecting rod (383), and the movable block (384) is connected with the protective shell (33) in a sliding fit mode.

4. The die cutting machine for plastic light guide plates according to claim 1, characterized in that: the ejection mechanism (45) comprises two ejection plates (451) and two return springs (452), the left end and the right end of the inner groove are connected with the two ejection plates (451) through pin shafts, the return springs (452) are connected between the ejection plates (451) and the inner groove, and the two ejection plates (451) are connected with each other.

5. The die cutting machine for plastic light guide plates according to claim 1, characterized in that: the adjusting mechanism (49) comprises a movable plate (491), a connecting spring (492) and a connecting roller (493), a sliding groove is formed in the supporting plate (48), the sliding groove is connected with the movable plate (491) in a sliding fit mode, the connecting spring (492) is connected between the sliding groove and the movable plate (491), and the connecting roller (493) is uniformly installed on the movable plate (491) through a pin shaft.

6. The die cutting machine for plastic light guide plates according to claim 1, characterized in that: the pressing device (5) comprises a fixing rod (51), a pressing plate (52) and a working spring (53), the fixing rod (51) is installed on the shell (1), the lower end of the fixing rod (51) is hinged with the middle of the pressing plate (52), and the fixing rod (51) and the left end of the pressing plate (52) are connected with the working spring (53).

7. The die cutting machine for plastic light guide plates according to any one of claims 1 to 6, wherein: the die cutting processing method of the plastic light guide plate die cutting machine comprises the following steps;

s1, conveying the light guide plate to a proper position rightwards through the conveying belt (2), wherein the right end of the light guide plate is located at the upper end of the cutter layer (44);

s2, the angle cylinder (50) drives the angle plate (47) to adjust the angle until the bearing plate (48) is attached to the lower end face of the light guide plate, at the moment, the sealing mechanism (46) is extruded and pressed down, at the moment, the air cavity (42) and the air holes are smoothly ventilated, and the lower end face of the light guide plate is sucked on the fixing frame (41) through the suction of the suction pump (43) so as to be positioned;

s3, the protective shell (33), the first die-cutting knife (36) and the second die-cutting knife (37) are driven to integrally descend through the connecting air cylinder (32), so that the light guide plate is subjected to cut mark processing, then the first die-cutting knife (36) is driven to descend through the pushing mechanism (34), at the moment, the second die-cutting knife (37) does not descend any more, and when the second copper plate (397) is extruded to be in contact with the first copper plate (394), the reciprocating air cylinder (391) is electrified to drive the first die-cutting knife (36) to move back and forth, so that the light guide plate is subjected to cut processing;

s4, after cutting, the die cutting device (3) resets, the angle plate (47) resets, at the moment, air suction stops, and the right end of the cut light guide plate is pressed down under the elasticity of the pressing device (5) so as to carry out thorough separation;