CN107855649B - Vacuum workbench and laser marking machine adopting same - Google Patents
Vacuum workbench and laser marking machine adopting same Download PDFInfo
- Publication number
- CN107855649B CN107855649B CN201710966072.5A CN201710966072A CN107855649B CN 107855649 B CN107855649 B CN 107855649B CN 201710966072 A CN201710966072 A CN 201710966072A CN 107855649 B CN107855649 B CN 107855649B
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- vacuum
- sucker
- laser marking
- hole
- negative pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/361—Removing material for deburring or mechanical trimming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
Abstract
The invention relates to a vacuum workbench and a laser marking machine, wherein the vacuum workbench comprises a negative pressure power source, at least one vacuum protector communicated with the negative pressure power source, an integrated gas circuit board communicated with each vacuum protector through a gas guide groove, and a working board tightly attached to the upper surface of the integrated gas circuit board, wherein sucking disc holes matched with the corresponding gas guide grooves are formed in the working board in groups. The laser marking machine comprises the vacuum workbench. The invention reduces the waste phenomenon of the rim charge when the pressing plate is used for clamping, greatly improves the production efficiency, reduces the acquisition cost of workpiece materials and greatly improves the marking precision of the workpiece.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a vacuum workbench and a laser marking machine adopting the vacuum workbench.
Background
Laser marking is a marking method in which a workpiece is irradiated locally with high-energy-density laser to vaporize or change the color of a material on the surface of the workpiece, thereby leaving a permanent mark. Before carrying out laser marking on nameplate and label type workpieces, in order to guarantee the requirement of processing precision, the workpieces need to be clamped and positioned at first.
In the prior art, the laser coverage area of the laser marking machine is small, and for a workpiece with a large marking area, after the current working area is machined by laser, the workpiece needs to be manually shifted, and laser machining is carried out again on a new shifted marking area. The processing mode can only mark one area on the workpiece at each time, and after the previous marking processing is completed, the workpiece can only be manually moved to the next area to be processed, and clamping and positioning are carried out again to carry out the next marking processing process.
Aiming at the problem that manual positioning and clamping are needed in the laser marking process, some enterprises adopt a method of equipping the existing laser marking machine with an X-Y moving platform, and automatic displacement of a workpiece relative to a laser head is realized. After the laser marking machine finishes marking in the current region of the workpiece, the workpiece can be automatically fed forward by a preset distance through the X-Y moving platform, so that the laser marking machine can mark again in a new working region. Although the laser marking machine with the X-Y moving platform meets the automatic marking requirement of the workpiece to a certain extent, the clamping and positioning of the workpiece by the X-Y moving platform are realized through the pressing plate on the platform, and the clamping mode needs to reserve rim charge on the workpiece, so that not only is a great deal of waste of workpiece materials caused, but also subsequent processes are needed to remove the rim charge, the processing procedures are increased, and the production efficiency is greatly reduced. In addition, the workpiece is heated in the laser marking process, so that the thermal deformation phenomenon occurs, when a sheet part with a large size is clamped and positioned, the middle of the workpiece is bulged due to the clamping mode of the pressing plate, the printed mark is deformed, and the marking precision is reduced.
Disclosure of Invention
The invention aims to provide a vacuum workbench and a laser marking machine adopting the same, and aims to solve the technical problems that workpiece materials are wasted and the machining efficiency is low in the clamping and positioning mode of the conventional laser marking machine.
In view of the above problems of the prior art, according to one aspect of the present disclosure, the following technical solutions are adopted in the present invention:
a vacuum table, comprising:
and the negative pressure power source 10 is used for providing negative pressure power for the vacuum workbench.
At least one vacuum protector 40, at least one vacuum protector 40 includes one-way throttle valve 401 that is communicated with negative pressure power source 10, at least one vacuum protector 40 is communicated with negative pressure power source 10 through the trachea.
The cylinder manifold 30, vacuum protector 40 installs on cylinder manifold 30, is equipped with the hole that converges that equals with vacuum protector 40 quantity on the cylinder manifold to and a main gas port, in the cylinder manifold, each hole intercommunication that converges each other, and with main gas port UNICOM, negative pressure power supply 10 is connected to the main gas port of cylinder manifold 30 through trachea 20.
The integrated gas circuit board 50 is provided with gas guide grooves 501, the number of which is matched with that of the vacuum protectors 40, on the upper surface of the integrated gas circuit board 50, and each gas guide groove 501 is communicated with the corresponding vacuum protector 40.
The working plate 70 is tightly attached to the upper surface of the integrated gas circuit board 50, at least one sucker hole 701 is formed in the working plate 70, and the sucker holes 701 are arranged above the corresponding gas guide grooves 501 in a grouping and matching mode and used for adsorbing the workpiece 80.
It is characterized in that each vacuum protector 40 further comprises a filter 402 connected to the air guide groove 501 for filtering dust in the air path.
The novel sucker hole 701 is characterized in that the sucker hole 701 is a combination of a sucker counter bore and a positioning threaded hole, the sucker counter bore is arranged on the surface of a working plate, the cross-sectional area of the counter bore is larger than that of the threaded hole, and the positioning threaded hole is arranged in the sucker counter bore and communicated with the sucker counter bore.
It is characterized in that the negative pressure power source 10 is a vacuum pump or a combination of a vacuum generator and an air compressor.
The laser marking machine adopting the vacuum workbench comprises the vacuum workbench, a rack 110, an X-Y moving platform 90 arranged on the rack 110 and a laser head 100 arranged on the rack 110.
The frame 110 is used to fix the X-Y moving stage 90 and the laser head 100.
The vacuum table is fixedly disposed above the X-Y moving stage 90.
The laser head 100 is arranged above the vacuum workbench, and the X-Y moving platform 90 drives the vacuum workbench to move in the direction of X, Y, so that the workpiece 80 above the vacuum workbench is positioned under the laser head 100 to finish laser marking.
Has the advantages that:
because each sucker hole is provided with an independent air path, and each independent air path has a vacuum sealing function, when no workpiece is arranged above each sucker hole, the vacuum protector works to seal the air path in the air guide groove, thereby fundamentally solving the leakage problem caused by the fact that a plurality of sucker holes share one air path, and enabling the vacuum workbench to realize the marking requirements on workpieces with various shapes and sizes and holes without covering all the sucker holes, and needing no sealing rubber strips and sealing cover plates for auxiliary sealing, thereby greatly shortening the processing working hours. In addition, the vacuum workbench clamps and positions the workpiece by utilizing the vacuum negative pressure principle, so that the surface to be machined of the workpiece is completely exposed in a machining area, the waste phenomenon of the rim charge when a pressing plate is used for clamping is reduced, the rim charge is not required to be removed in the subsequent process, and the production efficiency is greatly improved.
In addition, because the air guide groove is arranged on the integrated air circuit board to replace the air hose, the structure of the vacuum workbench is more compact, and the working space of the vacuum workbench is greatly saved.
The X-Y moving platform and the laser head are fixedly arranged on the rack, the vacuum workbench is fixedly arranged on the X-Y moving platform, and the workpiece is positioned by utilizing the negative pressure adsorption principle of the vacuum workbench, so that the surface to be processed of the workpiece can be completely exposed in a processing area, the waste phenomenon of rim charge when a pressing plate is used for clamping is reduced, and the acquisition cost of workpiece materials is reduced. In addition, the mode of clamping and positioning by using the negative pressure adsorption mode ensures that most parts of the workpiece are fixed on the working plate, relieves the phenomena of thermal deformation and warping caused by heating the workpiece, and greatly improves the marking precision of the workpiece.
Drawings
FIG. 1 is a schematic structural diagram of a vacuum table according to the present embodiment;
FIG. 2 is a schematic view illustrating the operation of the vacuum table according to the present embodiment;
FIG. 3 is a schematic view of the marking process of the workpiece according to the embodiment;
fig. 4 is a schematic structural diagram of the laser marking machine of the present embodiment.
Reference numerals:
10-negative pressure power source; 20-trachea; 30-a bus bar;
40-a vacuum protector; 50-integrated gas circuit board; 70-a working plate;
80-a workpiece; a 90-X-Y motion stage; 100-laser head;
110-a rack; 120-marking zone; 401-one-way throttle valve;
402-a filter; 501-air guide grooves; 701-sucker holes.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
As shown in fig. 1-3, in the present embodiment, the vacuum protector includes a filter member and a one-way throttle valve, wherein the one-way throttle valve includes a throttle member and a one-way valve connected in parallel therewith. Specifically, the throttling element is connected with the one-way valve in parallel and connected with the filtering element in series, and the stopping direction of the one-way valve is consistent with the flow direction of the vacuum airflow. The parallel gas circuit of the throttling element and the one-way valve forms a NOT gate logic control gas circuit.
The working principle of the vacuum protector is as follows: when the sucking disc is sucked, vacuum airflow is formed in the loop, the check valve is compressed by the action of the vacuum airflow, the air passage is cut off, and the throttle element limits the flow of the vacuum airflow through the throttle hole, keeps the cut-off state of the check valve and is in a detection state at the same time. When a workpiece is arranged on the sucker, the sucker is covered, no airflow exists in a branch air passage of the sucker, the throttle valve loses vacuum airflow, the vacuum degree cannot be kept continuously, the one-way valve is restored to be conducted under the action of the spring, and the air passage between the sucker and the vacuum generator is communicated to form an adsorption vacuum degree to tightly suck the workpiece. The size of the throttling hole of the throttling element is matched with a return spring of the one-way valve to form pressure difference for controlling the pressure when the one-way valve is opened.
As shown in fig. 2, in this embodiment, the working plate is provided with sucker holes in an array, the sucker holes are a combination of sucker counter bores and positioning threaded holes, the sucker counter bores are arranged on the surface of the working plate, the cross-sectional areas of the counter bores are larger than the cross-sections of the threaded holes, and the sucker holes have the function of 1. a cavity is formed on the surface of the working plate to form a sucker structure for adsorbing a workpiece; 2. the cross-sectional area can enlarge the adsorption area and enhance the suction force.
The positioning threaded hole is arranged in the sucker counterbore and communicated with the sucker counterbore. The function is as follows: 1. the gas circuit function; 2. the positioning threaded hole can be used for installing a workpiece positioning device and other tool fixtures. The working range of the workbench is expanded, the thin plate parts are directly adsorbed and clamped, and the thick plate parts, the shell parts and other parts can be clamped by installing a universal clamp on the platform.
The integrated gas circuit board is arranged below the working board and is fixedly connected with the working board. The integrated gas circuit board is provided with gas guide grooves with the number matched with that of the sucker holes, the matching modes can be one-to-one correspondence or a plurality of sucker holes correspond to one gas guide groove, and the gas guide grooves are not communicated and crossed with each other. An air guide groove is correspondingly arranged below each sucker hole. The starting point of the air guide groove is a sucking disc hole, and the end points are all arranged on the edge of the integrated air circuit plate. The end point of each air guide groove is provided with an air guide through hole.
The other end of the vacuum protector is arranged on the bus board. The confluence plate is provided with confluence holes with the same number as the vacuum protectors and a main air hole. In the manifold plate, the respective manifold holes communicate with each other and with the main air hole.
The negative pressure power source is connected to the main air hole of the confluence plate through a hose. The negative pressure power source may be a vacuum pump, or a combination of a vacuum generator and an air compressor.
As shown in fig. 4, the embodiment further provides a laser marking machine, which includes the vacuum worktable, a machine frame, an X-Y moving platform arranged on the machine frame, and a laser head arranged on the machine frame. Wherein, the vacuum worktable is fixedly arranged on the X-Y moving platform, and the laser head is arranged above the vacuum worktable. A gantry 110 is used to hold the X-Y motion stage 90 and the laser head 100. The X-Y moving platform 90 drives the vacuum workbench to move in the direction X, Y, so that the workpiece 80 above the vacuum workbench is positioned under the laser head 100, and laser marking is completed.
Claims (4)
1. A vacuum table for a laser marking machine, comprising:
the negative pressure power source (10) is used for providing negative pressure power for the vacuum workbench;
at least one vacuum protector (40), wherein the at least one vacuum protector (40) comprises a one-way throttle valve (401) communicated with the negative pressure power source (10), and the at least one vacuum protector (40) is communicated with the negative pressure power source (10) through an air pipe;
the vacuum protector (40) is arranged on the bus board (30), the bus board is provided with bus holes and a main air hole, the number of the bus holes is equal to that of the vacuum protectors (40), the bus holes are communicated with one another and the main air hole in the bus board, and the negative pressure power source (10) is connected to the main air hole of the bus board (30) through an air pipe (20);
the integrated gas circuit board (50), the upper surface of the integrated gas circuit board (50) is provided with gas guide grooves (501) the number of which is matched with that of the vacuum protectors (40), and each gas guide groove (501) is communicated with the corresponding vacuum protector (40);
the working plate (70) is tightly attached to the upper surface of the integrated gas circuit board (50), at least one sucker hole (701) is formed in the working plate (70), and the sucker holes (701) are arranged above the corresponding gas guide grooves (501) in a grouping and matching mode and used for adsorbing a workpiece (80);
each vacuum protector (40) also comprises a filter (402) connected with the air guide groove (501) and used for filtering dust in the air path;
the one-way throttle valve (401) comprises a throttle piece and a one-way valve connected in parallel with the throttle piece, the throttle piece is connected in parallel with the one-way valve and connected in series with the filter (402), and the stop direction of the one-way valve is consistent with the flow direction of the vacuum airflow;
the throttling element is provided with a throttling hole, the flow of the vacuum airflow is limited through the throttling hole, and the size of the throttling hole is matched with a return spring of the check valve to form a pressure difference for controlling the pressure when the check valve is opened.
2. The vacuum workbench for the laser marking machine according to claim 1, wherein the sucker hole (701) is a combination of a sucker counter bore and a positioning threaded hole, the sucker counter bore is arranged on the surface of the workbench, the cross-sectional area of the counter bore is larger than that of the threaded hole, and the positioning threaded hole is arranged in the sucker counter bore and communicated with the sucker counter bore.
3. The vacuum table for laser marking machines according to claim 1, characterized in that the negative pressure power source (10) is a vacuum pump or a combination of a vacuum generator and an air compressor.
4. A laser marking machine using a vacuum table for a laser marking machine according to any of claims 1 to 3, comprising the vacuum table, further comprising a frame (110), an X-Y moving platform (90) arranged on the frame (110), and a laser head (100) arranged on the frame (110);
the machine frame (110) is used for fixing the X-Y moving platform (90) and the laser head (100);
the vacuum workbench is fixedly arranged above the X-Y moving platform (90);
laser head (100) set up the top of vacuum table, through X-Y moving platform (90) drive vacuum table is at X, Y ascending motion of side, makes work piece (80) of vacuum table top be located under laser head (100), accomplishes laser marking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710966072.5A CN107855649B (en) | 2017-10-17 | 2017-10-17 | Vacuum workbench and laser marking machine adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710966072.5A CN107855649B (en) | 2017-10-17 | 2017-10-17 | Vacuum workbench and laser marking machine adopting same |
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| Publication Number | Publication Date |
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| CN107855649A CN107855649A (en) | 2018-03-30 |
| CN107855649B true CN107855649B (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710966072.5A Active CN107855649B (en) | 2017-10-17 | 2017-10-17 | Vacuum workbench and laser marking machine adopting same |
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| CN205439594U (en) * | 2015-11-23 | 2016-08-10 | 深圳英诺激光科技有限公司 | Colored mark device of beating of transparent material laser induction wet process |
| CN206287263U (en) * | 2016-12-22 | 2017-06-30 | 福建龙泰竹业股份有限公司 | A kind of digital-controlled carving machine vacuum cup fixture |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206393234U (en) * | 2017-01-13 | 2017-08-11 | 东莞市诺恒精密机械有限公司 | A kind of vacuum suction processing unit (plant) |
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2017
- 2017-10-17 CN CN201710966072.5A patent/CN107855649B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005066488A (en) * | 2003-08-25 | 2005-03-17 | Seiko Epson Corp | Work adsorption table and liquid drop ejection device provided with this, method for manufacturing electro-optical device, electro-optical device and electronic instrument |
| CN101222001A (en) * | 2007-01-08 | 2008-07-16 | 李毅 | Solar battery laser marking device |
| CN201405409Y (en) * | 2009-04-24 | 2010-02-17 | 上海舒平精工机械有限公司 | Vacuum adsorption working bench |
| CN201887063U (en) * | 2010-11-29 | 2011-06-29 | 常州亿晶光电科技有限公司 | Air-suction rework station for solar battery laminating parts |
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| CN107855649A (en) | 2018-03-30 |
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