CN210334815U

CN210334815U - Laser cutting workpiece clamping assembly

Info

Publication number: CN210334815U
Application number: CN201921331140.1U
Authority: CN
Inventors: 朱志会
Original assignee: Jiangsu Guodian New Energy Equipment Co ltd
Current assignee: Jiangsu Guodian New Energy Equipment Co ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-04-17
Anticipated expiration: 2029-08-16

Abstract

The utility model relates to a laser cutting workpiece clamping assembly, which comprises two moving tables, a moving table driving mechanism for driving the moving tables to move along a second guide rail, and a plurality of workpiece clamping devices positioned between the two moving tables; the workpiece clamping device comprises a base, a supporting plate arranged above the base, a supporting plate lifting device arranged on the surface of the base, an output shaft connected with the supporting plate, and clamping plates arranged on the left side and the right side of the surface of the supporting plate; an opening is formed in one side of the mobile station, a turnover disc is arranged on the inner side face of the mobile station, a positioning groove matched with the square tube is formed in the inner side face of the turnover disc, and a turnover disc driving motor for driving the turnover disc to rotate is further arranged on the mobile station. The utility model discloses a laser cutting work piece clamping assembly can realize that other side's pipe location and low in labor strength, positioning accuracy are high.

Description

Laser cutting workpiece clamping assembly

Technical Field

The utility model relates to a clamping component especially relates to a laser cutting work piece clamping component.

Background

The side pipe need press from both sides tightly and fix a position before the operation of punching, still need punch a pair of another side to it after punching one face, this procedure is mainly still high manual realization at present, its positioning accuracy is lower, intensity of labour is great, consequently, need a work piece clamping assembly that can automatic positioning clamp tightly, work piece clamping device is used for pressing from both sides tight side pipe and realizes its horizontal positioning, because its vertical dimension projection can grow when square pipe overturns, consequently, layer board elevating gear has been set up, in order to drive the layer board decline before square pipe upset, in order to dodge square pipe.

In view of the above-mentioned drawbacks, the present designer is actively making research and innovation to create a clamping assembly for laser cutting work piece with a novel structure, so that the clamping assembly has industrial utility value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a can realize that other side's pipe location and low in labor strength, laser cutting work piece clamping component that positioning accuracy is high.

The utility model discloses a laser cutting workpiece clamping assembly, which comprises two moving tables, a moving table driving mechanism for driving the moving tables to move along a second guide rail, and a plurality of workpiece clamping devices positioned between the two moving tables;

the workpiece clamping device comprises a base, a supporting plate arranged above the base, a supporting plate lifting device arranged on the surface of the base, an output shaft connected with the supporting plate, and clamping plates arranged on the left side and the right side of the surface of the supporting plate;

an opening is formed in one side of the mobile station, a turnover disc is arranged on the inner side face of the mobile station, a positioning groove matched with the square tube is formed in the inner side face of the turnover disc, and a turnover disc driving motor for driving the turnover disc to rotate is further arranged on the mobile station.

Further, the utility model discloses a laser cutting work piece clamping components, the surface of base is provided with the protection box, layer board elevating gear sets up in the protection box.

Further, the utility model discloses a laser cutting work piece clamping assembly, still be provided with supplementary supporting spring between protection box and the layer board.

Further, the utility model discloses a laser cutting work piece clamping assembly, supplementary supporting spring is the air spring.

Further, the utility model discloses a laser cutting work piece clamping assembly, layer board elevating gear is cylinder, hydro-cylinder or linear electric motor.

Further, the utility model discloses a laser cutting work piece clamping component, the surface of base is equipped with the slide bar, the top and the layer board sliding fit of slide bar.

Further, the utility model discloses a laser cutting work piece clamping component, its characterized in that the figure of splint is two, the bottom and the layer board sliding fit of splint, still be provided with on the layer board with splint threaded connection's lead screw, the tip of lead screw is provided with adjusting hand wheel.

Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage: the utility model discloses a laser cutting work piece clamping components through the setting of overturning dish and upset dish drive arrangement, has realized the upset and the accurate positioning to square pipe, and work piece clamping device's setting has realized the transverse orientation to square pipe on the one hand, and it can not influence square pipe yet when square pipe of on the other hand overturns to the side of having realized the side of the side pipe upset dodges.

To sum up, the utility model discloses a laser cutting work piece clamping assembly can realize that other side's pipe location and low in labor strength, positioning accuracy are high.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

FIG. 1 is a floor plan of a square tube cutting station;

FIG. 2 is a schematic structural view of a laser cutting apparatus;

FIG. 3 is a partial cross-sectional view of the nozzle;

FIG. 4 is a top view of an output plate;

FIG. 5 is a cross-sectional view of the showerhead assembly;

FIG. 6 is a cross-sectional view of the nozzle base;

FIG. 7 is a front view of the workpiece clamping device;

FIG. 8 is a schematic diagram of a mobile station;

fig. 9 is a schematic structural view of the mount table.

In the figure, 1: a cutting assembly; 2: laser cutting the workpiece clamping assembly; 3: an installation table; 4: a first guide rail; 5: a mounting table drive mechanism; 6: a connecting arm; 7: a link arm drive mechanism; 8: a laser cutting device; 9: a mobile station; 10: a mobile station drive mechanism; 11: a workpiece clamping device; 12: a base; 13: a support plate; 14: a pallet lifting device; 15: a splint; 16: turning over the turntable; 17: positioning a groove; 18: a turnover disc driving motor; 19: a second guide rail; 20: a protective case; 21: an auxiliary support spring; 22: a slide bar; 23: a screw rod; 24: adjusting a hand wheel; 25: a lifting platform; 26: a drive motor; 27: a gear; 28: a rack; 29: a proximity sensor; 30: a cutting head body; 31: a nozzle; 32: a nozzle base; 33: an upper accommodating groove; 34: a lower accommodating groove; 35: a transfer aperture; 36: connecting the cover assembly; 37: a showerhead assembly; 38: a laser output aperture; 39: inward inclined spray holes; 40: outwards inclined spraying holes; 41: a main gas connecting pipe; 42: an auxiliary gas connecting pipe; 43: a nozzle body; 44: an output plate; 45: pressing the ring downwards; 47: a first diagonal airway; 48: a second diagonal airway; 49: an annular air duct; 50: a seal ring; 51: a connecting cover body; 52: an upper compression ring; 53: perforating; 54: a first lens group; 55: locking a ring; 56: a lens protection ring; 57: a first housing; 58: a mounting frame drive; 59: a mounting frame; 60: a lens; 61: perforating; 62: a second housing; 63: a first half mirror; 64: a first mounting box; 65: a first straightening mirror; 66: an optical fiber connector; 67: a second mounting box; 68: a light source; 69: a second collimating mirror; 70: a second half mirror; 71: a third mounting box; 72: an image collector; 73: an imaging focusing mirror; 74: a filter lens.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1 to 9, a square tube cutting workstation comprises a cutting assembly 1 and a laser cutting workpiece clamping assembly 2, wherein the cutting assembly comprises a mounting table 3, a mounting table driving mechanism 5 for driving the mounting table to move along a first guide rail 4, a connecting arm 6 arranged on the surface of the mounting table, a connecting arm driving mechanism 7 for driving the connecting arm to move, and a laser cutting device 8 arranged at the end part of the connecting arm, the laser cutting workpiece clamping assembly comprises two moving tables 9, a moving table driving mechanism 10 for driving the moving tables to move along a second guide rail 19, and a plurality of workpiece clamping devices 11 positioned between the two moving tables, and the plurality of workpiece clamping devices are distributed along a direction parallel to the first guide rail;

the workpiece clamping device comprises a base 12, a supporting plate 13 arranged above the base, a supporting plate lifting device 14 arranged on the surface of the base, an output shaft of which is connected with the supporting plate, and clamping plates 15 arranged on the left side and the right side of the surface of the supporting plate;

an opening is formed in one side of the mobile station, a turnover disc 16 is arranged on the inner side face of the mobile station, a positioning groove 17 matched with the square tube is formed in the inner side face of the turnover disc 16, and a turnover disc driving motor 18 for driving the turnover disc to rotate is further arranged on the mobile station.

This pipe cutting workstation through parts such as mount table, linking arm and linking arm actuating mechanism, the drive sets up and carries out spot facing work in the laser cutting device who sets up on the laser cutting work piece clamping assembly side pipe on the linking arm tip, and its processing degree of automation is high, pollutes and the noise is little to operating personnel's operational environment has been improved. During specific work, the square tube or other types of tube fittings are arranged on the workpiece clamping device in a traveling crane or in a manual mode, and the square tube is positioned on the surface of the supporting plate and is transversely positioned by the clamping plates on the two sides of the supporting plate. After the square tube is placed, the moving seats at the two ends of the square tube move towards the end part of the square tube until the end part of the square tube penetrates through the opening in the moving platform and enters the positioning groove of the turnover disc, so that the longitudinal positioning of the square tube is completed. After the positioning is finished, the moving seats at the two ends are restored to the original positions, the mounting table of the cutting assembly is driven by the mounting table driving mechanism to move to the preset position along the first guide rail, then the connecting arm driving assembly drives the connecting arm to move towards the direction close to the square pipe until the laser cutting device at the end of the connecting arm moves to the upper side of the square pipe, the laser cutting device is a laser cutting head, the laser cutting device utilizes laser beams to cut workpieces, and the cutting process is low in noise and few in scraps. Specifically, the laser cutting device is used for irradiating laser beams emitted by the laser device on the surface of the square pipe, and the laser cutting device can move in two dimensions under the driving of the connecting arm driving assembly and the mounting table driving assembly, so that the pipe fitting is punched. After the hole is punched on one side of the square pipe, the connecting arm can be restored to the original position, meanwhile, the mobile station moves to the end part of the square pipe until the end part is positioned in the positioning groove, and then the supporting plate is driven by the supporting plate lifting device to descend by a certain height so as to overturn the square pipe. And then the turnover disc driving motor drives the turnover disc to rotate to the position, facing upwards, of the other side of the square pipe, then the supporting plate and the mobile station are sequentially restored to the original positions, and the laser cutting device can realize the punching operation on the other side of the square pipe in a similar mode until all sides of the square pipe are punched. Compared with the traditional drilling equipment, the square tube cutting workstation has higher automation degree and less environmental pollution.

Preferably, a protection box 20 is arranged on the surface of the base, and the supporting plate lifting device is arranged in the protection box.

Preferably, an auxiliary supporting spring 21 is further provided between the protection box and the support plate.

Preferably, the auxiliary support spring is a gas spring.

The auxiliary supporting of the supporting plate is realized through the arrangement of the auxiliary supporting spring.

Preferably, the supporting plate lifting device is a cylinder, an oil cylinder or a linear motor.

Preferably, the surface of the base is provided with a slide bar 22, and the top end of the slide bar is in sliding fit with the supporting plate.

Preferably, the number of the clamping plates is two, the bottom ends of the clamping plates are in sliding fit with the supporting plate, the supporting plate is further provided with a screw rod 23 in threaded connection with the clamping plates, and the end portion of the screw rod is provided with an adjusting hand wheel 24.

The setting of adjusting handle wheel and lead screw for operating personnel can be through the position of lead screw adjustment splint, so that its square pipe adaptation with corresponding size.

Preferably, the surface of the mounting table is provided with an elevating table 25 on which the body of the link arm driving mechanism is provided.

The setting of elevating platform makes the linking arm and locate the laser cutting device of linking arm tip and can go up and down under the drive of elevating platform to make it to punch to the side pipe that has different thickness panel.

Preferably, each of the mount table drive mechanism and the moving table drive mechanism includes a drive motor 26, a gear 27 connected to an output shaft of the drive motor, and a rack 28 provided on the ground and engaged with the gear, the drive motor of the mount table drive mechanism is provided in the mount table, and the drive motor of the moving table drive mechanism is provided in the moving table.

Preferably, a proximity sensor 29 is further provided on the mounting table.

During specific implementation, the installation table and the mobile table can control the moving distance of the installation table and the mobile table through the stepping motor or the rotary encoder, and the arrangement of the proximity sensor enables the installation table to adjust the moving distance data of the installation table and the mobile table according to signals of the proximity sensor, so that the moving precision of the installation table and the mobile table is improved. Specifically, a plurality of standard components corresponding to the proximity sensors can be arranged on the ground or the base.

The laser cutting device comprises a cutting head body 30 and a nozzle 31 positioned at the front end of the cutting head body, wherein the nozzle comprises a nozzle base body 32, an upper accommodating groove 33 is formed in the upper surface of the nozzle base body, a lower accommodating groove 34 is formed in the lower surface of the nozzle base body, a transmission hole 35 communicating the upper accommodating groove with the lower accommodating groove is formed in the nozzle base body, a connecting cover assembly 36 connected with the nozzle base body is arranged above the upper accommodating groove, a spray head assembly 37 connected with the nozzle base body is arranged in the lower accommodating groove, a laser output hole 38 penetrating from the top surface of the spray head assembly to the bottom surface of the spray head assembly and communicating with the transmission hole is formed in the middle of the spray head assembly, an inward inclined spray hole 39 extending from the side surface of the spray head assembly to the bottom surface of the spray head assembly and an outward inclined spray hole 40 extending from the inner side surface of the, the middle axis of the inward inclined spray hole is obliquely intersected with the middle axis of the laser output hole, the outward inclined spray hole is positioned on one side, far away from the laser output hole, of the inward inclined spray hole, and a main gas connecting pipe 41 and an auxiliary gas connecting pipe 42 are respectively arranged on the outer side face of the nozzle base body, wherein the inner cavity of the main gas connecting pipe is communicated with the laser output hole, and the inner cavity of the auxiliary gas connecting pipe is communicated with the inward inclined spray hole.

The laser cutting device, namely the laser cutting head, is a processing device for cutting plates and is widely applied to industrial production.

When the existing laser cutting head is used for cutting plates with different thicknesses, an operator needs to replace the laser cutting head with the corresponding spray hole size according to the thickness of the plates and adjust the pressure and flow of auxiliary gas input simultaneously to achieve the best cutting effect, so that the operation of the existing laser cutting head is troublesome, and the cooling effect of the laser cutting head is general when the laser cutting head is used for cutting. In addition, when the existing laser cutting head cuts a thick plate, the air supply pressure of the auxiliary gas needs to be increased in order to improve the cutting speed, however, when the auxiliary gas pressure is too high, a certain shock wave is easily generated due to the change of the distance between the nozzle and the workpiece, and meanwhile, the purity of the central auxiliary gas is easily influenced by the peripheral air in the cutting process, so that the cutting effect is influenced.

This laser cutting device, the setting of the orifice of syncline for operating personnel can be through the mist of syncline orifice input air and oxygen, with air, the oxygen proportion of adjusting total supplementary gas, make laser cutting device can cut the panel that has different thickness, and it also has the effect of supplementary cooling simultaneously, thereby has further improved the cutting effect to panel. In specific implementation, the inward inclined spray holes extend from the side surface to the bottom surface of the spray head assembly, and an included angle a between the axis of the spray head assembly and the central axis of the laser output hole is an acute angle. The arrangement of the outward inclined spray holes reduces the influence of peripheral air on the central auxiliary gas, and further improves the cutting effect. When the laser nozzle assembly works, a laser beam transmitted from the upper part of the nozzle base body passes through the transmission hole and the laser output hole and is output to the surface of a workpiece, auxiliary gas oxygen input from the main gas connecting pipe is input into the laser output hole through a transmission channel in the nozzle base body and the nozzle assembly and is output from the bottom end of the laser output hole, meanwhile, mixed gas input from the auxiliary gas connecting pipe is input into the inward inclined jet hole and is jetted out from the bottom end of the inward inclined jet hole, and because the bottom end of the inward inclined jet hole is close to one side of the laser output hole, the mixed gas output from the bottom end of the inward inclined jet hole is mixed with central auxiliary gas jetted out from the laser output hole, so that total auxiliary gas is formed and the surface of the workpiece is swept, and therefore cooling. Meanwhile, part of mixed gas input into the inward inclined spray holes is sprayed out towards the direction far away from the central auxiliary gas through the outward inclined spray holes located beside the mixed gas and forms outward airflow, the outward airflow enables the peripheral gas to be difficult to influence the purity of the central auxiliary gas, meanwhile, peripheral dust fragments are difficult to enter the inside of the nozzle, in addition, the outward airflow weakens shock waves between the central auxiliary gas and the surface of a workpiece, and further welding efficiency is improved.

Preferably, the head assembly includes a head body 43, an output plate 44 located below the head body, and a lower compression ring 45 threadedly coupled to the head body, the head body having a top end located in the lower receiving chamber and the head body having a top end threadedly coupled to the nozzle base, the inwardly inclined nozzle hole including a first inclined air passage 47 extending from a side surface of the head body to a bottom surface of the head body and a second inclined air passage 48 extending from a surface of the output plate to a bottom surface of the output plate, the first inclined air passage communicating with the second inclined air passage, the outwardly inclined nozzle hole extending from the bottom surface of the output plate to the bottom surface of the output plate and communicating with the second inclined air passage, the output plate having an outer side surface formed as a stepped surface, the lower compression ring being fitted over the outer side surface of the output plate and having an inner flange compressed against the stepped surface, a top of the lower compression ring being threadedly coupled to the head body, the laser output hole extends from the top surface of the head body to the bottom surface of the output plate.

Because inside oblique orifice and outside oblique orifice are crossing inside the shower nozzle subassembly, this design has made things convenient for operating personnel to the technology processing of shower nozzle subassembly, and wherein, inside oblique orifice comprises the second slant air duct that is located first slant air duct in the shower nozzle main part and output board, and outside oblique orifice is located the output board completely, and the opening on its top is located the same position with second slant air duct to the processing of outside oblique orifice has been made things convenient for.

Preferably, the upper surface of the output plate is provided with an annular air duct 49, and the outward inclined spray holes and the top end opening of the second inclined air duct are all positioned in the annular air duct.

Preferably, the seal rings 50 are provided between the head main body and the nozzle base body and between the head main body and the output plate.

Preferably, the connecting cover assembly comprises a connecting cover body 51 and an upper compression ring 52 in threaded connection with the nozzle base body, an inner flange of the upper compression ring is compressed on a step surface on the outer side of the connecting cover body, a mounting cavity is arranged in the connecting cover body, a through hole 53 communicated with the mounting cavity is arranged on the top surface of the connecting cover, a first lens group 54 is arranged in the mounting cavity, a locking ring 55 in threaded connection with the connecting cover body is arranged below the first lens group, a protective lens ring 56 connected with the nozzle base body through a bolt is arranged below the locking ring, a protective lens 57 positioned in the transmission hole is arranged below the protective lens ring, and sealing rings are arranged on the upper side and the lower side of the protective lens.

Preferably, the cutting head body comprises a zoom assembly and a light source assembly, the zoom assembly comprises a first shell 57, a mounting frame driving device 58 connected with the first shell and a lens assembly, the lens assembly comprises a mounting frame 59 with a main shaft connected with an output shaft of the mounting frame driving device and a plurality of lenses 60 with different curvatures arranged on the mounting frame, the plurality of lenses are distributed along the circumference of the circumference taking the main shaft of the mounting frame as the center, the upper surface and the lower surface of the first shell are both provided with through holes 61 corresponding to the lenses in the first shell, the light source assembly comprises a second shell 62 with an inner cavity communicated with the inner cavity of the first shell, the bottom end of the second shell is arranged at the through holes on the upper surface of the first shell, a first half-reflecting mirror 63 is arranged in the second shell, a first mounting box 64 with an inner cavity communicated with the inner cavity of the second shell is arranged on the second shell, the first mounting box is further provided with an optical fiber connector 66, and the top end of the connecting cover assembly is arranged at the perforated position of the lower surface of the first shell.

The arrangement of the zooming component realizes the zooming function of the laser cutting device, so that the laser cutting device can be more effectively adapted to plates with different thicknesses. Because the difference of panel thickness, consequently need adjust laser cutting device's height during the cutting to make it and cut the hole adaptation, when panel thickness was thicker, the nozzle stretched into and receives the influence of splashing in the cutting hole easily, consequently can adopt the mode that changes the focus to realize the cutting to thicker panel. The prior laser cutting device adopting the zoom system has the advantages that the focal length can be continuously adjusted, so the structure is more complex, the zoom component adopts a plurality of lenses with fixed curvature, the requirements of cutting plates with different thicknesses can be basically met, the structure is greatly simplified, and the cost is lower. During specific work, the laser input from the optical fiber connector is output to the first semi-transparent semi-reflecting mirror after being aligned by the first aligning mirror, is downwards transmitted by reflection of the first semi-transparent semi-reflecting mirror and is input to the nozzle through the lens positioned below the first semi-transparent semi-reflecting mirror, and is finally output to the surface of a workpiece through the nozzle.

Preferably, the drive means is a stepper motor.

Preferably, the second housing is further provided with a second mounting box 67, an inner cavity of the second mounting box is communicated with the inner cavity of the second housing, the second mounting box is internally provided with a light source 68 and a second collimating mirror 69, the second housing is internally provided with a second half mirror 70 positioned above the first half mirror, the top of the second housing is provided with a third mounting box 71, an inner cavity of the third mounting box is communicated with the inner cavity of the second housing, and the third mounting box is internally provided with an image collector 72, an imaging focusing mirror 73 positioned below the image collector, and a filter 74 positioned below the imaging focusing mirror.

The light source is arranged and used for illuminating the workpiece, so that the image collector can collect image information of the workpiece, and cutting operation is facilitated. When the imaging device works specifically, light rays emitted by the light source are transmitted to the second semi-transparent semi-reflecting mirror through the second collimating mirror, are reflected to the first semi-transparent semi-reflecting mirror through the second semi-transparent semi-reflecting mirror, and are transmitted to the surface of a workpiece through the lens and the nozzle in the first shell, and the light rays reflected by the surface of the workpiece are imaged on the image collector through the nozzle, the lens, the first semi-transparent semi-reflecting mirror, the second semi-transparent semi-reflecting mirror, the filter and the imaging focusing mirror in sequence, so that the imaging of the workpiece is realized.

Preferably, the image collector is a CMOS or CCD image sensor, and the light source is an LED light source.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description.

In addition, the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention. Also, 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. A laser cutting work piece clamping assembly characterized in that: the device comprises two moving tables, a moving table driving mechanism for driving the moving tables to move along a second guide rail, and a plurality of workpiece clamping devices positioned between the two moving tables;

2. The laser-cut workpiece clamping assembly of claim 1, wherein: the surface of base is provided with the protection box, layer board elevating gear sets up in the protection box.

3. The laser-cut workpiece clamping assembly of claim 2, wherein: an auxiliary supporting spring is further arranged between the protection box and the supporting plate.

4. The laser-cut workpiece clamping assembly of claim 3, wherein: the auxiliary supporting spring is a gas spring.

5. The laser-cut workpiece clamping assembly of claim 1, wherein: the supporting plate lifting device is a cylinder, an oil cylinder or a linear motor.

6. The laser-cut workpiece clamping assembly of claim 1, wherein: the surface of the base is provided with a sliding rod, and the top end of the sliding rod is in sliding fit with the supporting plate.

7. The laser cutting workpiece clamping assembly according to claim 1, wherein the number of the clamping plates is two, the bottom ends of the clamping plates are in sliding fit with the supporting plate, the supporting plate is further provided with a lead screw in threaded connection with the clamping plates, and the end of the lead screw is provided with an adjusting hand wheel.