CN114178725B

CN114178725B - Lens cutting and marking device

Info

Publication number: CN114178725B
Application number: CN202111594562.XA
Authority: CN
Inventors: 梅雪松; 运侠伦; 赵亮; 程泽财; 李晓; 梅岭南
Original assignee: Wuxi Chaotong Intelligent Manufacturing Technology Research Institute Co ltd
Current assignee: Wuxi Chaotong Intelligent Manufacturing Technology Research Institute Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2023-11-24
Anticipated expiration: 2041-12-24
Also published as: CN114178725A

Abstract

The invention relates to the technical field of cutting and marking, in particular to a lens cutting and marking device. The stand is horizontally fixed on the ground; the XY motion platform is arranged on the table top of the machine frame; the special jig comprises a plurality of groups of special jigs which are fixed on the XY motion platform side by side; the laser cutting unit is arranged above the special jig through an upright post fixed beside the XY motion platform; the laser marking unit and the laser cutting unit are arranged on the upright post in parallel; the two dust collecting ports are respectively arranged beside the laser cutting unit and the laser marking unit. The invention has high integration level and automation level, has high cutting and marking efficiency on workpieces, reduces environmental pollution, improves the cutting and marking efficiency of lenses and reduces labor cost. Can be to the special tool of lens design of every model, be applicable to laser cutting and marking station simultaneously, when changing the product type, only need change the tool and just can realize.

Description

Lens cutting and marking device

Technical Field

The invention relates to the technical field of cutting and marking, in particular to a lens cutting and marking device.

Background

At present, the processing of car lamp lenses on the market has the requirements of front cutting and side marking. The two lenses are connected through the middle pouring gate, the middle pouring gate is cut off firstly during processing, and then the lenses are turned over to achieve side marking. Aiming at a workpiece with the cutting and marking requirements, if double-station sequential execution is adopted, the processing efficiency is inevitably reduced. Therefore, it is necessary to perform gate cutting and marking of the workpiece on one apparatus and to be compatible with a plurality of workpiece sizes. Meanwhile, the high processing quality is achieved, namely, marking is clear and readable, a cut is smooth, laser cannot generate any trace or burr on the edge of a workpiece, and the functional surface of the workpiece cannot be damaged. There is a need to devise a device that solves the above-mentioned problems.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a lens cutting and marking device.

The technical scheme for realizing the aim of the invention is as follows: a lens cutting and marking device is provided with

The stand is horizontally fixed on the ground;

the XY motion platform is arranged on the table top of the machine frame;

the special jig comprises a plurality of groups of special jigs which are fixed on the XY motion platform side by side;

the laser cutting unit is arranged above the special jig through an upright post fixed beside the XY motion platform;

the laser marking unit and the laser cutting unit are arranged on the upright post in parallel;

the two dust collecting ports are respectively arranged beside the laser cutting unit and the laser marking unit.

Further, the special fixture is provided with a lens component to be processed and a support component; the lens component comprises a pouring gate and lenses formed at two ends of the pouring gate; the support assembly is used for supporting a sprue between the lenses at two ends; the steering pressing mechanisms are symmetrically distributed on two sides of the support assembly and used for laterally rotating and pressing the lenses; and the steering pressing mechanism is also provided with an eccentric positioning unit acting on the horizontal direction of the lens.

Further, the support assembly comprises a gate support for supporting the gate, a micro switch arranged on the gate support, and a gate pressing mechanism which is arranged on the gate support and is used for pressing the gate placed on the gate support; limiting components acting on the pouring gate are also arranged on the pouring gate supports at two sides of the pouring gate; the limiting assembly comprises a first limiting assembly acting on a connecting body between the pouring gate and the lens and a second limiting assembly acting on the pouring gate.

Further, the gate pressing mechanism comprises a pressing rod acting on the gate and a motor for driving the pressing rod; the motor is embedded in the gate support, and an output shaft of the motor is connected with a compression bar above the gate support.

Further, the steering pressing mechanism comprises a steering mechanism and a pressing mechanism which is synchronously driven by the steering mechanism and acts on the side edge of the lens; the steering mechanism comprises a steering motor, a base assembly and a cam; the steering motor is arranged on one side of the base assembly, and an output shaft of the steering motor penetrates through the base assembly along the horizontal direction; the contact part of the output shaft of the steering motor and the base assembly is in bearing connection; the cam is arranged on an output shaft of the steering motor corresponding to the position of the pressing mechanism.

Further, the pressing mechanism comprises a lens support, a first pressing component and a second pressing component which act on the side edge of the lens placed on the lens support together; the bottom end of the lens support is rotationally connected with the output shaft of the steering motor; the first pressing component and the second pressing component are arranged on two sides of the lens support and correspond to the cam.

Further, the first pressing component comprises a first push rod and a first pressing rod arranged at the front end of the first push rod; the rear end of the first push rod is contacted with the cam; a first travel groove is formed in the longitudinal direction of the rod body of the first push rod; the first push rod is movably connected with the lens support through the travel groove by a shaft pin.

Further, the second pressing assembly comprises a second push rod and a second pressing rod arranged at the front end of the second push rod; the rear end of the second push rod is contacted with the cam; a second travel groove is formed in the rod body of the second push rod longitudinally; the second push rod is movably connected with the lens support through the second travel groove by a shaft pin; and a steering limiting component is additionally arranged between the two lens supports.

Further, a group of air blowing assemblies are arranged beside each special jig; and a group of static electricity eliminating components are arranged beside the laser marking unit.

Further, the laser cutting unit and the laser marking unit are respectively arranged on the upright post through a Z-axis moving platform.

After the technical scheme is adopted, the invention has the following positive effects:

(1) The invention has high integration level and automation level, has high cutting and marking efficiency on workpieces, and reduces environmental pollution;

(2) The invention can design a special jig for each model of lens, is simultaneously suitable for laser cutting and marking stations, and can be realized only by replacing the jig when the product types are replaced.

Drawings

In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which

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

FIG. 2 is a schematic diagram of the structure of the XY motion platform and the dedicated jig of the present invention;

FIG. 3 is a schematic diagram of the structure of the laser cutting unit and the laser marking unit of the present invention;

FIG. 4 is a schematic diagram of an application structure of the jig of the present invention;

FIG. 5 is a schematic diagram of the overall structure of the fixture according to the present invention;

FIG. 6 is a schematic view of a lens assembly of the fixture of the present invention;

FIG. 7 is a first view angle schematic view of a gate support of the inventive fixture;

FIG. 8 is a schematic view of a second view angle structure of a gate support of the inventive fixture;

FIG. 9 is a schematic diagram of a steering hold-down mechanism of the inventive fixture;

FIG. 10 is a schematic view of a steering mechanism of the inventive fixture;

FIG. 11 is a schematic diagram of the pressing mechanism and eccentric positioning unit of the special fixture of the present invention;

fig. 12 is a flowchart of the operation of the present invention.

Detailed Description

Referring to fig. 1 to 3, the invention has a frame 1, an XY motion platform 2, a special jig 3, a laser cutting unit 4, a laser marking unit 5, and a dust collecting port 6.

The frame 1 is horizontally fixed on the ground; the XY motion platform 2 is arranged on the table top of the machine frame 1.

The special jig 3 is fixed on the XY motion platform 2 side by side in four groups.

The laser cutting unit 4 is arranged above the special jig 3 through a stand column 41 fixed beside the XY motion platform 2; the laser cutting unit 4 adopts an air-cooled carbon dioxide laser and a high-end vibrating mirror, has excellent beam quality, good stability and high processing precision, and can fully meet the requirements of cutting quality and efficiency. The laser adopts the overall arrangement of upwards light-emitting, shakes mirror system and installs on stand 41, and the light path is sealed in the section bar inner chamber, prevents the processing dust influence. The whole optical path meets the focal length requirement of laser cutting by adjusting the working plane through the Z-axis moving platform 9, and is provided with a locking bolt, so that the precision of the laser cutting unit 4 and the stability under continuous operation are ensured.

The laser marking unit 5 and the laser cutting unit 4 are arranged on the upright column 41 in parallel; the laser marking unit 5 works in two stages, the cut workpiece is marked on the upper surface, and then the special jig 3 drives the workpiece to rotate 90 degrees to mark the two-dimensional code on the side face. The laser marking unit 5 has high system integration level, high marking speed and clear marking effect, and can realize the required coding standard.

The number of the dust collecting holes 6 is two, and the dust collecting holes are respectively arranged beside the laser cutting unit 4 and the laser marking unit 5. Dust generated in the processing is timely sucked away, and pollution to products is prevented. A group of blowing assemblies 7 are arranged beside each special jig 3. A group of static electricity eliminating components 8 are arranged beside the laser marking unit 5 to cool and eliminate static electricity to the workpiece. The laser cutting unit 4 and the laser marking unit 5 are respectively arranged on the upright post 41 through the Z-axis moving platform 9. The XY motion platform 2 selects a high-precision motion module, the travel of the X-direction module is 1000mm, and double-station parallel processing of four groups of jigs can be realized. The Y direction selects a double-drive synchronous module with a stroke of 400mm so as to facilitate the subsequent twice cutting processing in a group of workpieces. The movement module is provided with a photoelectric limit switch to ensure safety. The device also comprises a control system which comprises a controller part, a digital quantity signal input part, a digital quantity signal output part, a motion control part, a laser cutting part, a laser marking part and a communication part.

The frame 1 is also provided with an automatic push-up door, and the door is provided with laser protective glass, so that the working condition of the equipment can be observed. The whole laser processing bin of the door is totally closed, a sealing strip is arranged at a door gap, two safety locks are arranged on the door, and the laser is turned off in time when the door is abnormally opened, so that the safety is ensured.

Referring to fig. 4 to 6, the special fixture 3 has a lens assembly 3000 to be processed and a holder assembly 3100; the lens assembly 3000 includes a gate 3001 and lenses 3002 formed at both ends of the gate 3001; the support assembly 3100 is configured to support a gate 3001 between two lenses 3002; the device also comprises steering pressing mechanisms 3200 which are symmetrically distributed on two sides of the support assembly 3100 and are used for laterally rotating and pressing the lenses 3002; an eccentric positioning unit 3300 acting on the lens 3002 in the horizontal direction is also arranged on the steering pressing mechanism 3200. A steering limit assembly 260 is also provided between the two lens holders 230. The steering limit assembly 260 includes a pair of snap-fit springs, the traction of which prevents the lens support 230 from being overstocked when it is flipped outward, thereby providing a limit.

Referring to fig. 7, the carrier assembly 3100 includes a gate carrier 3110 for supporting the gate 3001, a micro switch 3120 disposed on the gate carrier 3110, and a gate pressing mechanism 3130 mounted on the gate carrier 3110 for pressing the gate 3001 placed on the gate carrier 3110. The micro switch 3120 is locked and installed on the gate support 3110 through the micro switch support 3121 and the bolt, wherein the micro switch support 3121 is L-shaped, the connection surface between the micro switch support 3121 and the gate support 3110 is provided with a waist-shaped hole 3122, the waist-shaped hole 3122 is convenient for adjusting the distance between the micro switch 3120 and the gate 3001, thereby finding an optimal switch triggering point. In operation, when the gate 3001 is mounted on the gate support 3110, the micro switch 3120 at the outer edge of the gate 3001 is triggered, and the mounting condition of the gate 3001 is determined by the signal returned by the micro switch 3120, and the above-mentioned trigger signal collection and uploading of the micro switch can refer to the prior art, which is not repeated herein.

The gate support 3110 on both sides of the gate 3001 is further provided with a limiting component acting on the gate 3001, where the limiting component is used for limiting the gate 3001 and the nearby structure, so as to facilitate cutting.

The spacing assembly includes a first spacing assembly 3140 that acts on the connection between the gate 3001 and the lens 3000, and a second spacing assembly 3150 that acts on the gate 3001.

The first limiting components 3140 are distributed on two sides of the connecting body between the gate 3001 and the lens 3000, and the first limiting components 3140 are integrally formed with the gate support 3110.

The second spacing component 3150 is a cylindrical pin and is distributed on two sides of the gate 3001, either on the same side or on opposite sides, and is used for spacing the circular gate 3001.

Referring to fig. 8, the gate pressing mechanism 3130 includes a plunger 3131 acting on the gate 3001 and a motor 3132 for driving the plunger 3131; the motor 3132 is embedded in the gate support 3110, and an output shaft of the motor 3132 is connected with a compression bar 3131 above the gate support 3110; the output shaft of the motor 3132 is in locking connection with the compression bar 3131 through a bolt, when the motor 3132 rotates to one side, the motor 3132 drives the compression bar 3131 to rise in a rotating mode, and when the motor 3132 rotates to the other side, the motor 3132 drives the compression bar 3131 to fall in a rotating mode, and therefore the compression and release effects on the pouring gate 3001 are achieved.

Referring to fig. 9 and 10, steering pressing mechanism 3200 includes a steering mechanism 3210, and a pressing mechanism 3220 driven synchronously by steering mechanism 3210 and acting on the side of the lens. Steering mechanism 3210 includes steering motor 3211, base assembly 3212, and cam 3213; the steering motor 3211 is installed on one side of the base assembly 3212, an output shaft of the steering motor 3211 penetrates through the base assembly 3212 in the horizontal direction, and the steering motor 3211 is connected with the base assembly 3212 through locking by bolts; the contact part of the output shaft of the steering motor 3211 and the base assembly 3212 is in bearing connection; the cam 3213 is disposed on an output shaft of the steering motor 3211 corresponding to the position of the pressing mechanism 3220, the cam 3213 is connected with an output shaft of the steering motor 3211 in a keyed manner, and when the steering motor 3211 rotates, the output shaft of the steering motor 3211 drives the cam 3213 to rotate.

Referring to fig. 11, the hold-down mechanism 3220 includes a lens support 3230, a first hold-down assembly 3240 and a second hold-down assembly 3250 that cooperate to act on a side of a lens 3002 placed on the lens support 3230; the bottom end of the lens support 3230 is rotationally connected with the output shaft of the steering motor 3211; the first compression assembly 3240 and the second compression assembly 3250 are disposed on either side of the lens support 3230 and correspond to the cam 3213 and are simultaneously driven by the cam 3213. The first pressing assembly 3240 comprises a first push rod 3241 and a first pressing rod 3242 arranged at the front end of the first push rod 3241, and the first push rod 3241 is in locking connection with the first pressing rod 3242 through a bolt; the rear end of the first push rod 3241 contacts the cam 3213; a first travel groove 3243 is formed in the longitudinal direction of the rod body of the first push rod 3241; the first push rod 3241 is movably coupled to the lens support 3230 via a pin extending through the travel slot 3243. When the cam 3213 rotates, the rear end of the first push rod 3241 contacts the cam 3213, and the first push rod 3241 generates displacement in the longitudinal direction, so as to drive the first push rod 3242 to play a role in loosening and compressing the lens 3002. The second pressing assembly 3250 includes a second push rod 3251 and a second pressing rod 3252 disposed at a front end of the second push rod 3251, and the second push rod 3251 is tightly coupled to the second pressing rod 3252 by a screw bolt; the rear end of the second push rod 3251 contacts the cam 3213; a second stroke groove 3253 is formed in the rod body of the second push rod 3251 longitudinally; the second push rod 3251 is movably coupled to the lens support 3230 via a pin extending through the second travel slot 3253. When the cam 3213 rotates, the rear end of the second push rod 3251 contacts the cam 3213, and the second push rod 3251 generates displacement in a longitudinal direction, so as to drive the second push rod 3252 to play a role in loosening and compressing the lens 3002. The eccentric positioning unit 3300 is arranged on the upper end surface of the lens support 3230; the eccentric positioning unit 3300 includes a plurality of eccentric posts 3310 disposed about the periphery of the lens 3002 and in contact with the sides of the lens 3002; each eccentric post 3310 is mounted on the lens support 3230 by a connecting post 3320, the connecting post 3320 is in locking connection with the lens support 3230 by a bolt, the eccentric post 3310 is in shaft connection with the connecting post 3320, and the fixing position of the lens 3002 can be flexibly adjusted by manually adjusting the eccentric post 3310, so that the lens 3002 can be flexibly positioned.

The working principle of the invention is as follows:

a controller part: the system is mainly responsible for overall control logic of the system, and reliable and stable control is realized by adopting a board card controller; digital quantity signal input section: the magnetic switch is mainly responsible for detecting the servo action position state. According to the connector configuration of the special fixture 3, the machine can automatically identify the type of the special fixture 3 according to the set rule, and the function of automatically identifying the feeding type is realized. When the device is running, the opening of the safety door will cause the device to cease running. Digital quantity signal output section: the relay signal output is controlled by the controller, the servo movement is finally controlled, and the material overturning and the vacuum and alarm lamp control are realized. Motion control part: the servo motor is controlled by the controller to move in the X-axis and Y-axis directions, so that a workpiece reaches a specified station for processing. Laser cutting part: the materials on the laser cutting jig are controlled mainly through the galvanometer control card. Laser marking part: the laser marking step mainly comprises front marking, overturning and side marking. A communication section: the equipment communication adopts an Ethernet mode to carry out information interaction with the outside, and comprises upper computer communication in the system and protocol communication outside the system, so that the equipment operation and material marking functions are completed.

The special fixture 3 can be designed for workpieces (lenses) of different types, and the special fixture is suitable for laser cutting and marking stations, and can be realized only by replacing the special fixture 3 when the types of products are replaced. In order to conveniently replace the special jig 3, an interface which can be conveniently replaced is designed on the special jig 3. The shape of the special jig 3 can be compatible with various varieties of flow channels. Two special jigs 3 are a set of, can clamp two work pieces, and the interval distance between every special jig 3 of group is unanimous with the interval distance between cutting point and the marking point, can guarantee like this that when cutting the second group, the first group's is going on up to standard to this reduces process time effectively. A sucking disc is arranged below each workpiece and is matched with a positioning column to clamp the workpiece. A servo rotating mechanism 3210 is arranged at each workpiece clamping position of the special fixture 3. After the laser cutting process is finished, the servo rotating mechanism 3210 works to enable the workpiece to rapidly rotate to a side marking position, so that parallel marking can be realized while cutting, the processing efficiency can be effectively improved, and the processing time of one set of workpieces (one set of four sets of workpieces and 8 workpieces) is shortened.

The bottom of the special jig 3 is fixed on the workbench through a locating pin and a hand-screwed bolt, the special jig 3 is integrated with a blowing component 7, all circuits and air circuits are connected to corresponding interfaces on the workbench of the frame 1 in a centralized manner through connectors, and enter the lower layer of the equipment through a drag chain. The connector is internally provided with the identification contact, the software can be preset with processing programs of different signals, the equipment can identify the type of the clamp in an induction mode, the processing of various workpieces can be realized, and the processing of the workpieces can be further expanded according to actual needs.

The working flow of the invention is as follows: referring to fig. 12;

and 1, selecting and installing a corresponding jig according to the model of a product to be processed, wherein the jig is firmly installed, and the connector is reliably connected and then is operated in the next step.

And 2, manually feeding, namely clamping four groups of workpieces at most each time, wherein after the manual feeding is finished, the equipment can perform subsequent flow action only when the jig is provided with materials.

And 3, after the feeding is finished, an operator closes the safety door, and only when the equipment detects that the safety door is completely closed and the personnel are safe, the operator presses the start button equipment to start processing.

And 4, sequentially performing cutting and marking steps, and synchronously starting cutting of the second group of workpieces and marking of the first group of workpieces after the first group of workpieces are cut, and the like. The whole processing track is like an arch shape.

And 5, after all cutting and marking are completed, the jig is moved to a discharging position for manual discharging.

The whole set of processing time is not longer than 90s, and a set of processing time can complete the cutting and marking process of 8 workpieces, so that the processing efficiency is greatly improved.

While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.

Claims

1. The utility model provides a lens cutting marking device which characterized in that: the device is provided with a frame (1), wherein the frame (1) is horizontally fixed on the ground; the XY motion platform (2) is arranged on the table top of the frame (1); a special jig (3), wherein the special jig (3) has a plurality of groups which are fixed on the XY motion platform (2) side by side,

the special fixture (3) is provided with a lens component (3000) to be processed and a support component (3100); the lens assembly (3000) comprises a gate (3001) and lenses (3002) formed at two ends of the gate (3001); the support assembly (3100) is used for supporting a sprue (3001) between two lenses (3002);

the device also comprises steering pressing mechanisms (3200) which are symmetrically distributed on two sides of the support assembly (3100) and are used for laterally rotating and pressing the lens (3002); an eccentric positioning unit (3300) acting on the lens (3002) in the horizontal direction is also arranged on the steering pressing mechanism (3200);

the laser cutting unit (4) is arranged above the special jig (3) through an upright post (41) fixed beside the XY motion platform (2);

the laser marking unit (5), the laser marking unit (5) and the laser cutting unit (4) are arranged in parallel and are arranged on the upright post (41);

the two dust collecting ports (6) are respectively arranged beside the laser cutting unit (4) and the laser marking unit (5);

the steering pressing mechanism (3200) comprises a steering mechanism (3210) and a pressing mechanism (3220) which is synchronously driven by the steering mechanism (3210) and acts on the side edge of the lens; the steering mechanism (3210) comprises a steering motor (3211), a base assembly (3212) and a cam (3213); the steering motor (3211) is arranged on one side of the base assembly (3212), and an output shaft of the steering motor (3211) penetrates through the base assembly (3212) along the horizontal direction; the contact part of the output shaft of the steering motor (3211) and the base assembly (3212) is in bearing connection; the cam (3213) is arranged on an output shaft of a steering motor (3211) corresponding to the position of the pressing mechanism (3220);

the hold-down mechanism (3220) includes a lens support (3230), a first hold-down assembly (3240) and a second hold-down assembly (3250) that cooperate to the side of a lens (3002) placed on the lens support (3230); the bottom end of the lens support (3230) is rotationally connected with the output shaft of the steering motor (3211); the first compression assembly (3240) and the second compression assembly (3250) are arranged on two sides of the lens support (3230) and correspond to the cam (3213);

the first pressing assembly (3240) comprises a first push rod (3241) and a first pressing rod (3242) arranged at the front end of the first push rod (3241); the rear end of the first push rod (3241) is contacted with a cam (3213); a first travel groove (3243) is formed in the longitudinal direction of the rod body of the first push rod (3241); the first push rod (3241) is movably connected with the lens support (3230) through a shaft pin penetrating through the travel groove (3243);

the second pressing assembly (3250) comprises a second push rod (3251) and a second pressing rod (3252) arranged at the front end of the second push rod (3251); the rear end of the second push rod (3251) is contacted with a cam (3213); a second stroke groove (3253) is formed in the rod body of the second push rod (3251) longitudinally; the second push rod (3251) is movably connected with the lens support (3230) through a second travel groove (3253) by a shaft pin; a steering limiting component (3260) is additionally arranged between the two lens supports (3230).

2. The lens cutting and marking device according to claim 1, wherein: the base assembly (3100) comprises a gate base (3110) for supporting a gate (3001), a micro switch (3120) arranged on the gate base (3110), a gate pressing mechanism (3130) mounted on the gate base (3110) for pressing the gate (3001) placed on the gate base (3110); a limit component acting on the pouring gate (3001) is further arranged on the pouring gate support (3110) at two sides of the pouring gate (3001); the limiting component comprises a first limiting component (3140) acting on a connecting body between the pouring gate (3001) and the lens (3000), and a second limiting component (3150) acting on the pouring gate (3001).

3. The lens cutting and marking device according to claim 2, wherein: the gate pressing mechanism (3130) comprises a pressing rod (3131) acting on the gate (3001) and a motor (3132) for driving the pressing rod (3131); the motor (3132) is embedded in the gate support (3110), and an output shaft of the motor (3132) is connected with a compression bar (3131) above the gate support (3110).

4. The lens cutting and marking device according to claim 1, wherein: a group of blowing assemblies (7) are arranged beside each special jig (3); a group of static eliminating components (8) are arranged beside the laser marking unit (5).

5. The lens cutting and marking device according to claim 1, wherein: the laser cutting unit (4) and the laser marking unit (5) are respectively arranged on the upright post (41) through the Z-axis moving platform (9).