CN104827779A - Universal marking machine - Google Patents

Universal marking machine Download PDF

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Publication number
CN104827779A
CN104827779A CN201510172565.2A CN201510172565A CN104827779A CN 104827779 A CN104827779 A CN 104827779A CN 201510172565 A CN201510172565 A CN 201510172565A CN 104827779 A CN104827779 A CN 104827779A
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CN
China
Prior art keywords
fixed seat
marking machine
joint
screw rod
arm
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Granted
Application number
CN201510172565.2A
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Chinese (zh)
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CN104827779B (en
Inventor
吴光周
张进
王军
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GUANGDONG HAN'S YUEMING LASER TECHNOLOGY Co Ltd
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GUANGDONG HAN'S YUEMING LASER TECHNOLOGY Co Ltd
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Priority to CN201510172565.2A priority Critical patent/CN104827779B/en
Publication of CN104827779A publication Critical patent/CN104827779A/en
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Publication of CN104827779B publication Critical patent/CN104827779B/en
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Abstract

Provided is a universal marking machine, comprising a lifting adjusting device, a lifting base installed on the lifting adjusting device, a telescopic arm installed on the lifting base, and a laser generator installed on the tail end of the telescopic arm. The lifting adjusting device adjusts height of the lifting base. The telescopic arm is freely retractable. The lifting adjusting device comprises a screw rod and two positioning pieces. The middle part of the side surface of the lifting base is provided with a nut and two sliding blocks. The positioning pieces limit the lifting base. The screw rod drives the lifting base to move up and down on a vertical direction. The telescopic arm comprises a plurality of arm sections, a cardan joint, and a mounting rack. The lifting base, the plurality of arm sections, the cardan joint, and the mounting rack are connected in sequence. The arm sections are cooperated by using a pivot joint manner. Two adjacent arm sections can horizontally rotate relative to each other. Through rotating the arm sections, the telescopic arm is stretched and adjusted. The position of the laser generator can be adjustable in a three-dimensional space, so as to adjust according to different marking positions. The marking machine has good flexibility.

Description

Universal marking machine
Technical field
The present invention relates to a kind of marking equipment, particularly relate to a kind of universal marking machine.
Background technology
Laser marking machine utilizes the laser of high-energy-density to carry out some parts to workpiece to irradiate, and skin-material is vaporized or the chemical reaction of color change occurs, thus leaving permanent marker.Laser marking machine has that mark precision is high, process velocity is fast, with low cost, automatization level is high, do not produce mechanical presses or mechanical stress damages the plurality of advantages such as machined article, makes the application of laser marking machine more and more extensive.
But immediately below the mark location of existing laser marking machine can only be beaten or the position of side coil, the position of mark is comparatively conventional, and can not adjust.But cannot complete for such as the handstand mark put in inside cavity of some specific positions, so existing laser marking machine is difficult to meet omnibearing mark demand.
Summary of the invention
Therefore, the object of the present invention is to provide the universal marking machine that a kind of mark location is adjustable on three dimensions.
A kind of universal marking machine, comprise support, be installed in the elevation and subsidence regulating device on support, connect the elevating bracket on elevation and subsidence regulating device, connect the telescopic arm on elevating bracket and be installed in the laser generator of telescopic arm end, described elevation and subsidence regulating device regulates the height of this elevating bracket, described elevation and subsidence regulating device comprises one first vertical gear, one second vertical gear, one screw rod and two keepers, described second vertical gear is installed in screw rod bottom, second vertical gear gear vertical with first engages each other, the vertical gear of first vertical gear driven second and screw rod synchronous axial system, described elevating bracket is provided with a nut and two slide blocks in the middle part of the side of screw rod, described keeper carries out spacing to elevating bracket, and screw rod drives elevating bracket to move up and down holding up direction, described telescopic arm comprises some arms joint, a universal joint and an installing rack, connect successively between described elevating bracket, some arms joint, universal joint and installing rack, arm joint saves pivot joint with arm, can mutually horizontally rotate to make telescopic arm carry out telescopic adjustment between adjacent two-arm joint, described universal joint is used for linking arm joint and installing rack, and described laser generator is installed on installing rack.
Further, described screw rod is in vertically arranging, and screw rod outer surface is provided with external screw thread, and offer the adjustment hole run through downwards in the middle part of described nut upper surface, the hole wall of adjustment hole is provided with internal thread, and described screw rod is spirally connected through nut and adjustment hole.
Further, two slide blocks of described elevation and subsidence regulating device are located at the both sides of nut respectively, and described slide block is provided with stopper slot towards the side of screw rod, and described keeper is arranged in stopper slot.
Further, the described first vertical gear is vertical display, and the described second vertical gear is in laterally putting.
Further, described arm joint coordinates with adopting the mode of pivot joint between elevating bracket, and arm joint can horizontally rotate around elevating bracket.
Further, described elevation and subsidence regulating device also comprises a upper fixed seat, one lower fixed seat, rotating shaft on one, one lower rotary shaft, one belt, fixed seat, lower fixed seat is fixedly arranged on the lateral surface of main casing respectively up and down, upper fixed seat and lower seat are in being oppositely arranged up and down, described upper rotating shaft is laterally articulated on upper fixed seat by bearing, upper rotating shaft can be rotated relative to upper fixed seat, described lower rotary shaft is laterally articulated on lower fixed seat by bearing, and this lower rotary shaft gear vertical with first is affixed, lower rotary shaft can rotate relative to lower fixed seat, described belt sleeve is located on rotating shaft and lower rotary shaft, described upper rotating shaft drives lower rotary shaft to rotate by belt indirectly.
Further, the outer surface of described upper rotating shaft and lower rotary shaft is equipped with screw thread.
Further, described elevation and subsidence regulating device also comprises a crank, and the outboard end of described crank and upper rotating shaft is affixed.
Further, described support comprises a main casing and a subshell, and the height of described main casing is greater than subshell height, and described subshell is fixedly arranged on the lateral surface of main casing, and described subshell is covered on outside upper fixed seat and lower fixed seat.
In sum, the universal marking machine of the present invention is by being provided with elevation and subsidence regulating device and telescopic arm, described elevation and subsidence regulating device regulates the height of laser generator, described telescopic arm retractable and adjustment mark direction, thus the position realizing laser generator is adjustable on three dimensions, to adjust according to different mark location, flexibility is good, practical, applied range.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of universal marking machine of the present invention.
Fig. 2 is the schematic perspective view of universal another angle of marking machine shown in Fig. 1.
Fig. 3 is the structural representation after the universal marking machine removal support shown in Fig. 1.
Fig. 4 is the structural representation of universal another angle of marking machine shown in Fig. 3.
Detailed description of the invention
In order to make technical scheme of the present invention more clearly show, below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figures 1 to 4, the invention provides a kind of universal marking machine, for laser marking.This universal marking machine comprises chassis 10, the support 20 be installed on chassis 10, be installed in elevation and subsidence regulating device 30 on support 20, the elevating bracket 40 be installed on elevation and subsidence regulating device 30, be installed in the telescopic arm 50 on elevating bracket 40 and be installed in the laser generator 60 of telescopic arm 50 end.Described elevation and subsidence regulating device 30 regulates the height of elevating bracket 40, described telescopic arm 50 retractable, thus the position realizing laser generator 60 is adjustable on three dimensions.
Described support 20 comprises main casing 21 and a subshell 22, and the height of described main casing 21 is greater than subshell 22 height, and described subshell 22 and elevating bracket 40 are located at the relative both sides of main casing 21 respectively, and described main casing 21 is provided with two flutings 23 extending longitudinally towards the side of elevating bracket 40.
Described elevation and subsidence regulating device 30 comprises rotating shaft 33, lower rotary shaft 34, crank 39, belt (not shown) on upper fixed seat 31, lower fixed seat 32, vertical gear 36, screw rod 37 of one first vertical gear 35,1 second and two keepers 38.Fixed seat 31, lower fixed seat 32 are fixedly arranged on the lateral surface of main casing 21 respectively up and down, upper fixed seat 31 and lower seat are in being oppositely arranged up and down, described subshell 22 is covered on outside upper fixed seat 31 and lower fixed seat 32, described upper rotating shaft 33 is laterally articulated on upper fixed seat 31 by bearing, upper rotating shaft 33 can be rotated relative to upper fixed seat 31, the outer surface of upper rotating shaft 33 is provided with screw thread, and described crank 39 is affixed with the outboard end of upper rotating shaft 33; Described lower rotary shaft 34 is laterally articulated on lower fixed seat 32 by bearing, and lower rotary shaft 34 can rotate relative to lower fixed seat 32, and lower rotary shaft 34 two ends stretch out in outside lower fixed seat 32 respectively, and the surface of lower rotary shaft 34 is provided with screw thread equally.Described belt sleeve is located on rotating shaft 33 and lower rotary shaft 34, and when rotating crank 39, crank 39 drives upper rotating shaft 33 to rotate, and upper rotating shaft 33 drives lower rotary shaft 34 to rotate by belt indirectly.
The outline portion of the vertical gear 36 of the described first vertical gear 35, second is equipped with sprocket, and the described first vertical gear 35 is installed in the medial extremity of lower rotary shaft 34, and the first vertical gear 35 is in vertical display.Described screw rod 37 is in vertically arranging, screw rod 37 outer surface is provided with external screw thread, screw rod 37 upper end by bearing hinge joint on main casing 21, described second vertical gear 36 is installed in screw rod 37 bottom, second vertical gear 36 is in laterally putting, the sprocket of the sprocket gear 35 vertical with first of the second vertical gear 36 engages each other, and the first vertical gear 35 drives the second vertical gear 36 synchronous axial system.Described keeper 38 is vertically installed in the medial surface of main casing 21, and screw rod 37 both sides are located at respectively by two keepers 38.
Described elevating bracket 40 is provided with nut 41 and two slide blocks 42 towards the side of screw rod 37, two slide blocks 42 are located at the both sides of nut 41 respectively, the adjustment hole run through is offered downwards in the middle part of described nut 41 upper surface, the hole wall of adjustment hole is provided with internal thread, and described slide block 42 is provided with stopper slot towards the side of screw rod 37.During assembling, described screw rod 37 is spirally connected through nut 41 and adjustment hole, and described slide block 42 coordinates with keeper 38 through fluting 23 to be installed, and described keeper 38 is arranged in stopper slot, and keeper 38 elevating bracket 40 carries out spacing.When screw rod 37 rotates, the elevating bracket 40 coordinated with screw rod 37 screw is holded up direction and is moved up and down.
Described telescopic arm 50 comprises some arms joint 51, one universal joint 52 and installing rack 53, connect successively between the outboard end of elevating bracket 40, some arms joint 51, universal joint 52 and installing rack 53, arm joint 51 coordinates with adopting the mode of pivot joint between elevating bracket 40, arm joint 51 can horizontally rotate around elevating bracket 40, arm joint 51 saves the same mode of pivot joint that adopts between 51 with arm and coordinates, mutually can horizontally rotate between adjacent two-arm joint 51, by cursor joint 51, make telescopic arm 50 carry out telescopic adjustment.Described universal joint 52 is for linking arm joint 51 and installing rack 53, and described laser generator 60 is installed on installing rack 53, and described universal joint 52 can rotate at vertical plane, regulates the position of laser generator 60.Preferably, between the arm of described telescopic arm 50 joint 51 and arm saves 51, arm saves between 51 and universal joint 52, arm saves between 51 and installing rack 53 all there is damping effect, needs extra external force pusher arm to save 51, universal joint 52 and installing rack 53 rotate mutually.
During use, rotate crank 39, crank 39 drives upper rotating shaft 33 to rotate, upper rotating shaft 33 drives lower rotary shaft 34 to rotate by belt indirectly, and lower rotary shaft 34 is in rotation process, and the first vertical gear 35 drives the second vertical gear 36 and rotating shaft synchronous axial system, pass through threaded engagement, screw rod 37 drives elevating bracket 40 to move up and down holding up direction, thus completes laser generator 60 preliminary adjustment in height, makes the position of laser generator 60 near mark location.Again according to the physical location of mark, cursor joint 51, makes telescopic arm 50 carry out telescopic adjustment, and according to actual needs, rotary mounting seat, adjustment laser generator 60 towards, thus realize the adjustable object in laser generator 60 mark direction.
In sum, the universal marking machine of the present invention is by being provided with elevation and subsidence regulating device 30 and telescopic arm 50, described elevation and subsidence regulating device 30 regulates the height of laser generator 60, described telescopic arm 50 retractable and adjustment mark direction, thus the position realizing laser generator 60 is adjustable on three dimensions, to adjust according to different mark location, flexibility is good, practical, applied range.
The above embodiment only have expressed one embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (9)

1. a universal marking machine, it is characterized in that: comprise support, be installed in the elevation and subsidence regulating device on support, connect the elevating bracket on elevation and subsidence regulating device, connect the telescopic arm on elevating bracket and be installed in the laser generator of telescopic arm end, described elevation and subsidence regulating device regulates the height of this elevating bracket, described elevation and subsidence regulating device comprises one first vertical gear, one second vertical gear, one screw rod and two keepers, described second vertical gear is installed in screw rod bottom, second vertical gear gear vertical with first engages each other, the vertical gear of first vertical gear driven second and screw rod synchronous axial system, described elevating bracket is provided with a nut and two slide blocks in the middle part of the side of screw rod, described keeper carries out spacing to elevating bracket, and screw rod drives elevating bracket to move up and down holding up direction, described telescopic arm comprises some arms joint, a universal joint and an installing rack, connect successively between described elevating bracket, some arms joint, universal joint and installing rack, arm joint saves pivot joint with arm, can mutually horizontally rotate to make telescopic arm carry out telescopic adjustment between adjacent two-arm joint, described universal joint is used for linking arm joint and installing rack, and described laser generator is installed on installing rack.
2. universal marking machine as claimed in claim 1, is characterized in that: described screw rod is in vertically arranging, and offer the adjustment hole run through downwards in the middle part of described nut upper surface, the hole wall of adjustment hole is provided with internal thread, and described screw rod is spirally connected through nut and adjustment hole.
3. universal marking machine as claimed in claim 2, is characterized in that: two slide blocks of described elevation and subsidence regulating device are located at the both sides of nut respectively, and described slide block is provided with stopper slot towards the side of screw rod, and described keeper is arranged in stopper slot.
4. universal marking machine as claimed in claim 1, is characterized in that: the described first vertical gear is vertical display, and the described second vertical gear is in laterally putting.
5. universal marking machine as claimed in claim 1, is characterized in that: described arm joint coordinates with adopting the mode of pivot joint between elevating bracket, and arm joint can horizontally rotate around elevating bracket.
6. universal marking machine as claimed in claim 1, it is characterized in that: described elevation and subsidence regulating device also comprises a upper fixed seat, one lower fixed seat, rotating shaft on one, one lower rotary shaft, one belt, fixed seat, lower fixed seat is fixedly arranged on the lateral surface of main casing respectively up and down, upper fixed seat and lower seat are in being oppositely arranged up and down, described upper rotating shaft is laterally articulated on upper fixed seat by bearing, upper rotating shaft can be rotated relative to upper fixed seat, described lower rotary shaft is laterally articulated on lower fixed seat by bearing, and this lower rotary shaft gear vertical with first is affixed, lower rotary shaft can rotate relative to lower fixed seat, described belt sleeve is located on rotating shaft and lower rotary shaft, described upper rotating shaft drives lower rotary shaft to rotate by belt indirectly.
7. universal marking machine as claimed in claim 6, is characterized in that: the outer surface of described upper rotating shaft and lower rotary shaft is equipped with screw thread.
8. universal marking machine as claimed in claim 6, it is characterized in that: described elevation and subsidence regulating device also comprises a crank, the outboard end of described crank and upper rotating shaft is affixed.
9. universal marking machine as claimed in claim 6, it is characterized in that: described support comprises a main casing and a subshell, the height of described main casing is greater than subshell height, and described subshell is fixedly arranged on the lateral surface of main casing, and described subshell is covered on outside upper fixed seat and lower fixed seat.
CN201510172565.2A 2015-04-13 2015-04-13 Universal marking machine Active CN104827779B (en)

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Application Number Priority Date Filing Date Title
CN201510172565.2A CN104827779B (en) 2015-04-13 2015-04-13 Universal marking machine

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CN104827779B CN104827779B (en) 2016-07-20

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105128542A (en) * 2015-08-28 2015-12-09 武汉九武光电技术有限公司 Multi-dimensional adjustable laser marking machine
CN105382419A (en) * 2015-12-25 2016-03-09 苏州智合源电子科技有限公司 Laser lifting base of on-line full-automatic laser marking machine
CN105414753A (en) * 2015-12-25 2016-03-23 苏州智合源电子科技有限公司 Full-automatic online laser marking machine
CN106042662A (en) * 2016-06-29 2016-10-26 浙江泰禾激光设备有限公司 Laser marking machine
CN107649787A (en) * 2017-10-27 2018-02-02 成都添彩电子设备有限公司 A kind of support body for laser marker
CN108422760A (en) * 2017-02-14 2018-08-21 福州三龙喷码科技有限公司 A kind of movable type ink discharge device
WO2018163036A1 (en) * 2017-03-05 2018-09-13 Wallart Ltd. Integrated vertical portable inkjet printer
CN112719612A (en) * 2020-12-21 2021-04-30 宁夏苏锡铜业科技有限公司 Feeding and positioning structure for square copper pipe marking device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060017803A1 (en) * 2004-07-21 2006-01-26 Matsushita Electric Industrial Co., Ltd. Optical disk device
CN201120778Y (en) * 2007-12-10 2008-09-24 张沛 Laser mark printing machine for vehicle glass
CN201506076U (en) * 2009-06-29 2010-06-16 南京中南激光设备有限公司 Hand-held laser marking machine and universal clamping holder thereof
CN203726998U (en) * 2014-03-11 2014-07-23 上海银玛标识技术有限公司 Laser code-spraying machine
CN204296211U (en) * 2014-10-31 2015-04-29 韦钦国 A kind of laser marker
CN204641090U (en) * 2015-04-13 2015-09-16 广东大族粤铭激光科技股份有限公司 Universal marking machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060017803A1 (en) * 2004-07-21 2006-01-26 Matsushita Electric Industrial Co., Ltd. Optical disk device
CN201120778Y (en) * 2007-12-10 2008-09-24 张沛 Laser mark printing machine for vehicle glass
CN201506076U (en) * 2009-06-29 2010-06-16 南京中南激光设备有限公司 Hand-held laser marking machine and universal clamping holder thereof
CN203726998U (en) * 2014-03-11 2014-07-23 上海银玛标识技术有限公司 Laser code-spraying machine
CN204296211U (en) * 2014-10-31 2015-04-29 韦钦国 A kind of laser marker
CN204641090U (en) * 2015-04-13 2015-09-16 广东大族粤铭激光科技股份有限公司 Universal marking machine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105128542A (en) * 2015-08-28 2015-12-09 武汉九武光电技术有限公司 Multi-dimensional adjustable laser marking machine
CN105382419A (en) * 2015-12-25 2016-03-09 苏州智合源电子科技有限公司 Laser lifting base of on-line full-automatic laser marking machine
CN105414753A (en) * 2015-12-25 2016-03-23 苏州智合源电子科技有限公司 Full-automatic online laser marking machine
CN105414753B (en) * 2015-12-25 2017-09-12 苏州智合源电子科技有限公司 A kind of online full-automatic laser marking machine
CN106042662A (en) * 2016-06-29 2016-10-26 浙江泰禾激光设备有限公司 Laser marking machine
CN106042662B (en) * 2016-06-29 2017-11-21 浙江泰禾激光设备有限公司 A kind of laser marking machine
CN108422760A (en) * 2017-02-14 2018-08-21 福州三龙喷码科技有限公司 A kind of movable type ink discharge device
WO2018163036A1 (en) * 2017-03-05 2018-09-13 Wallart Ltd. Integrated vertical portable inkjet printer
US11590768B2 (en) 2017-03-05 2023-02-28 Wallart Ltd. Integrated vertical portable inkjet printer
CN107649787A (en) * 2017-10-27 2018-02-02 成都添彩电子设备有限公司 A kind of support body for laser marker
CN112719612A (en) * 2020-12-21 2021-04-30 宁夏苏锡铜业科技有限公司 Feeding and positioning structure for square copper pipe marking device

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Address after: 523808 Guangdong, Dongguan Songshan Lake high tech Industrial Development Zone Industrial Road, No. 28

Applicant after: GD HAN'S YUEMING LASER GROUP CO., LTD.

Address before: 523000 Guangdong, Dongguan Songshan Lake high tech Industrial Development Zone Industrial Road, No. 28

Applicant before: Guangdong Han's Yueming Laser Technology Co., Ltd.

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