CN107333400A - Depressed suction nozzle adsorption mechanism - Google Patents
Depressed suction nozzle adsorption mechanism Download PDFInfo
- Publication number
- CN107333400A CN107333400A CN201610281704.XA CN201610281704A CN107333400A CN 107333400 A CN107333400 A CN 107333400A CN 201610281704 A CN201610281704 A CN 201610281704A CN 107333400 A CN107333400 A CN 107333400A
- Authority
- CN
- China
- Prior art keywords
- suction nozzle
- nozzle head
- nozzle
- adsorption mechanism
- tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 26
- 230000000994 depressogenic effect Effects 0.000 title claims abstract description 24
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/303—Surface mounted components, e.g. affixing before soldering, aligning means, spacing means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/04—Mounting of components, e.g. of leadless components
- H05K13/0404—Pick-and-place heads or apparatus, e.g. with jaws
- H05K13/0413—Pick-and-place heads or apparatus, e.g. with jaws with orientation of the component while holding it; Drive mechanisms for gripping tools, e.g. lifting, lowering or turning of gripping tools
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10106—Light emitting diode [LED]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/01—Tools for processing; Objects used during processing
- H05K2203/0195—Tool for a process not provided for in H05K3/00, e.g. tool for handling objects using suction, for deforming objects, for applying local pressure
Abstract
The present invention relates to a kind of depressed suction nozzle adsorption mechanism, including：Multiple nozzle heads, the bottom of the nozzle head has a suction hole；Suction nozzle fixed block, for fixing multiple nozzle heads；Tool, the tool is provided with the multiple notches for adapting to LED chip to be mounted, and the nozzle head is connected and fixed between the suction nozzle fixed block and the tool and the suction hole of the nozzle head is connected with the notch.Due to being provided with notch on tool, nozzle head is fixed between tool and suction nozzle fixed block, and LED chip can enter to suction hole from notch, LED chip will not be shifted after being adsorbed in nozzle head with it is crooked.
Description
Technical field
The present invention relates to chip mounter technical field, more particularly to a kind of depressed suction nozzle adsorption mechanism.
Background technology
With the continuous progress of electronics technology, Ge Jia manufacturers are in order to can quickly, largely produce and reduce human cost, and high speed placement system is by universal favor and application.In the production process of LED, LED chip attachment to the reserved location on circuit board, the workflow of chip mounter are by chip mounter：Feeding-be moved to patch location-paster-is moved to feeding position, LED chip is sent to patch location by the adsorption mechanism on XYZ moving assemblies from continuity feed mechanism in the process, nozzle head bottom surface on traditional adsorption mechanism is plane, often occurs the crooked phenomenon of LED chip in paster, it is impossible to ensure the stability of paster and be accurately positioned.
The content of the invention
Based on this, it is necessary to provide a kind of registration and the good depressed suction nozzle adsorption mechanism of stability.
A kind of depressed suction nozzle adsorption mechanism, including：
Multiple nozzle heads, the bottom of the nozzle head has a suction hole；
Suction nozzle fixed block, for fixing multiple nozzle heads；
Tool, the tool is provided with the multiple notches for adapting to LED chip to be mounted, and the nozzle head is connected and fixed between the suction nozzle fixed block and the tool and the suction hole of the nozzle head is connected with the notch.
In one of the embodiments, in addition to be removably connected to the suction nozzle fixed block bottom be used for the nozzle head is fastened in the suction nozzle fixed block and rotation-preventing mechanism for preventing nozzle head rotation.
In one of the embodiments, the rotation-preventing mechanism includes the first anti-rotation sheet and the second anti-rotation sheet, and first anti-rotation sheet is provided with the multiple breach for adapting to the nozzle head in the width direction；The side wall of the nozzle head is provided with screens portion, and the screens portion is resisted against first anti-rotation sheet and/or the second anti-rotation sheet.
In one of the embodiments, the bottom of the suction nozzle fixed block offers a fluting along its length, and the suction nozzle fixed block is provided with the chamber for being connected with pumped vacuum systems, and multiple holding tanks respectively with the chamber are arranged side by side in the fluting；The nozzle head includes the epimere and hypomere being coaxially disposed, and the epimere is at least part of to be plugged in the holding tank.
In one of the embodiments, the circular in cross-section of the holding tank, the epimere is the cylinder for adapting to the holding tank.
In one of the embodiments, the cross section of the hypomere is rectangular, and the width of the hypomere is more than the diameter of the epimere.
In one of the embodiments, the both sides of the bottom of the hypomere set a step respectively, and the relative side of two steps has an inclined-plane respectively, and the bottom surface of the step is resisted against the tool.
In one of the embodiments, the tool, which is arranged at intervals between multiple boss, adjacent boss, is formed with the notch, and the width of the hypomere is more than the width of the notch.
In one of the embodiments, the height of the boss is equal to the height of the step, the length of the step is less than the width of the hypomere, the bottom surface of the hypomere have with the boss against abutment face, the abutment face is located at both sides of the step along length of bench direction respectively.
In one of the embodiments, it is provided with compression spring between the top of the epimere and the top of the holding tank.
Above-mentioned depressed suction nozzle adsorption mechanism, due to being provided with notch on tool, nozzle head is fixed between tool and suction nozzle fixed block, and LED chip can enter to suction hole from notch, LED chip will not be shifted after being adsorbed in nozzle head with it is crooked.
Above-mentioned depressed suction nozzle adsorption mechanism, step is provided with the bottom of nozzle head, after being resisted against on tool, can carry out axially position to LED chip, it is ensured that the accuracy and stability of paster.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of depressed suction nozzle adsorption mechanism of the present invention；
Fig. 2 is the enlarged schematic partial view of depressed suction nozzle adsorption mechanism of the present invention；
Fig. 3 is the exploded perspective view of depressed suction nozzle adsorption mechanism of the present invention；
Fig. 4 is the part-structure schematic diagram of rotation-preventing mechanism；
Fig. 5 is nozzle head and the connection diagram of elastic component；
Fig. 6 is Fig. 3 A portions enlarged diagram.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.The better embodiment of the present invention is given in accompanying drawing.But, the present invention can be realized in many different forms, however it is not limited to embodiments described herein.On the contrary, the purpose for providing these embodiments is made to the more thorough comprehensive of the disclosure understanding.
It should be noted that when an element is considered as " connection " another element, it can be directly to another element or may be simultaneously present centering elements.For illustrative purposes only, it is unique embodiment to be not offered as term as used herein " vertically ", " level ", "left", "right" and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is identical with belonging to the implication that the those skilled in the art of the present invention are generally understood that.Term used in the description of the invention herein is intended merely to describe the purpose of specific embodiment, it is not intended that in the limitation present invention.Term as used herein "and/or" includes the arbitrary and all combination of one or more related Listed Items.
Refer to Fig. 1 to Fig. 3, the depressed suction nozzle adsorption mechanism that the present invention is provided, including multiple nozzle heads 300, suction nozzle fixed block 100 and tool 300；The bottom of nozzle head 200 has a suction hole 221；Suction nozzle fixed block 100 is used to fix multiple nozzle heads 200, and preferably, nozzle head 200 can be fixed in side by side on suction nozzle fixed block 100；Tool 300 is plate-like, it is provided with the multiple notches 310 for adapting to LED chip to be mounted, nozzle head 200 is fixed between tool 300 and suction nozzle fixed block 100, the suction hole 221 of nozzle head 200 is connected with notch 310, tool 300 is mounted on continous way feed mechanism, continous way feed mechanism, which has connect, is moved to specified location after material, each LED chip is directed at each notch 310 of tool 300, drive mechanism driving suction nozzle fixed block 100 and nozzle head 200 are moved to correspondence position, LED chip is siphoned away from each notch 310, and delivers to paster position and carries out paster.Due to being provided with notch 310 on tool 300 so that when LED chip is adsorbed by nozzle head 200, axially position can be carried out, do not shift with it is crooked, the notch 310 on tool 300 can be set according to the specific size of LED chip.
Refer to Fig. 1, in one embodiment, the bottom of suction nozzle fixed block 100, which is detachably connected, is provided with rotation-preventing mechanism 400, and the rotation-preventing mechanism 400 is used for the bottom that nozzle head 200 is fixed on to suction nozzle fixed block 100, and is rotated further by for preventing nozzle head 200 to be arranged on after suction nozzle fixed block 100.
Fig. 2 to Fig. 4 is referred to, rotation-preventing mechanism 400 includes the first anti-rotation sheet 410 and the second anti-rotation sheet 420, and width of first anti-rotation sheet 410 along itself is provided with multiple breach 411, and the shapes and sizes of the breach 411 adapt to the shapes and sizes of nozzle head 200.Two anti-rotation sheets are all in strip, can be connected by screw with suction nozzle fixed block 100.Preferably, the side wall of nozzle head 200 can be provided with screens portion 224, when nozzle head 200 is installed, the screens portion 224 is resisted against on the second anti-rotation sheet 420, that is, one in two spacers be for tentatively fix nozzle head 200, another slides downwards for limiting nozzle head 200.
Advantageously, screens portion 224 can be arranged in the hypomere 220 of nozzle head 200 on a side wall of shorter edge, screens portion 224 and one of step 222 are positioned at the same side of nozzle head 200.Screens portion 224 can also be provided with simultaneously in two side walls of two shorter edges of nozzle head 200, install after nozzle head 200 and two spacers, the screens portion 224 of both sides is born against on the first anti-rotation sheet 410 and the second anti-rotation sheet 420.
In more detail, screens portion 224 can be side wall be in cambered surface protrusion, it is certain or other shapes of, such as, the rectangular boss in cross section.
Certain, rotation-preventing mechanism 400 can also be single spacer, i.e., only with a spacer, and the shapes and sizes of the spacer adapt to the shapes and sizes of nozzle head 200, while nozzle head 200 is also equipped with screens portion 224.
Referring to Fig. 4, in another embodiment, rotation-preventing mechanism 400 be while be provided with multiple first anti-rotation sheets 410 and multiple second anti-rotation sheets 420, the length of the first anti-rotation sheet 410 and the second anti-rotation sheet 420 could be arranged to it is equal, it can also be provided that unequal.Preferably, the length of second anti-rotation sheet 420 is slightly smaller than the length of the first anti-rotation sheet, first anti-rotation sheet 410 and the second anti-rotation sheet 420 can be staggered, simultaneously, to make structure compacter, the one end of one end of every group of the first anti-rotation sheet with another group adjacent of the first anti-rotation sheet after the extension of vertical direction has lap.
Refer to Fig. 3, in certain embodiments, the bottom of suction nozzle fixed block 100 offers a fluting 110 along its length, the cross section of the fluting 110 can be arranged to inverted U, suction nozzle fixed block 100 is provided with the chamber 221 for being connected with pumped vacuum systems, the multiple holding tanks 130 connected respectively with chamber 221 are arranged side by side in fluting 110, nozzle head 200 includes the epimere 210 and hypomere 220 being coaxially disposed, epimere 210 is at least part of to be plugged in holding tank 130, that is, the epimere 210 of nozzle head 200 some in the fluting 110, can also be that epimere 210 is entirely insertable in holding tank 130.
In a specific embodiment, the cross section of holding tank 130 is set to rounded, it is corresponding, the epimere 210 of nozzle head 200 is set to cylinder, the epimere 210 of cylinder adapts to circular hole, during installation, first anti-rotation sheet 410 first can be arranged on to the bottom of suction nozzle fixed block 100, further according to the shape of the breach 411 of 200 and first anti-rotation sheet of nozzle head 410, multiple nozzle heads 200 are inserted in the circular hole of suction nozzle fixed block 100 respectively, second anti-rotation sheet 420 is arranged on to the top of suction nozzle fixed block 100 again, after two stators are installed, nozzle head 200 will not be rotated, also will not down it slide.It is equal that first anti-rotation sheet 410 and the second anti-rotation sheet 420 can be arranged to thickness, length difference, after installation, can there is gap between two spacers, two spacers are close to nozzle head 200.
Preferably, the cross section of the hypomere 220 of nozzle head 200 sets rectangular, and the width of rectangle is more than the diameter of epimere 210.After nozzle head 200 is installed, the breach 411 of the first anti-rotation sheet 410 is in contact with the side wall of the hypomere 220 of nozzle head 200.
Refer to Fig. 3, Fig. 5, in a preferred embodiment, the length of epimere 210 is less than the length of holding tank 130, elastic component 500 is connected between holding tank 130 and nozzle head 200, for example, using compression spring, one end of compression spring can be fixedly connected on the top of the epimere 210 of nozzle head 200, the other end is resisted against the top of holding tank 130, or it is less than the spring of the epimere 210 of nozzle head 200 using diameter, spring is fastened on the epimere 210 of nozzle head 200 between holding tank 130, the elastic force of compression spring supports downwards nozzle head 200, element will not be damaged because of rigid impact when suction.
Referring to Fig. 2, the hypomere 220 of nozzle head 200 is connected to the surrounding on the top of notch 310 of tool 300 so that the corresponding notch 310 of the alignment of nozzle head 200 lower section tool 300.Notch 310 could be arranged to square notch 310, certain, other shapes can also be arranged to.
Fig. 2, Fig. 5 are referred to Fig. 6, in a preferred embodiment, in order to preferably make nozzle head 200 be docked with the notch 310 of tool 300, one step 222 can be set in the both sides of the bottom of the hypomere 220 of nozzle head 200 respectively, two steps 222 are all provided with an inclined-plane 223 in relative side, the inclined-plane 223 of setting can be used for guiding during absorption LED chip, have a vertical plane between inclined-plane 223 and the bottom surface of hypomere 220.The bottom surface of step 222 is resisted against the top surface of tool 300, now, and the bottom surface of two steps 222 is nozzle head 200 and the abutment face of tool 300.The structure on step 222 and inclined-plane 223 is set, be conducive to nozzle head 200 against.The distance between two steps 222 adapt to the length of LED chip to be mounted, i.e. distance is slightly larger than the length of LED chip to be mounted, so that two steps 222 itself in nozzle head 200 also have the effect that axially position is carried out to LED chip, adsorb after LED chip, the LED chip on suction nozzle will not be rotated.
Further, 222 outwardly that of step is vertical plane sideways, and can this could be arranged to corresponding extend sideways to a side of step 222 for the hypomere 220 of same face, i.e. nozzle head 200 with the corresponding side of hypomere 220 of nozzle head 200 sideways.The vertical corner of four side walls of the hypomere 220 of nozzle head 200 can be provided with chamfering, specifically, 45 degree of chamfering can be provided with.
The both sides of each notch 310 of tool 300 are upwardly extended respectively is provided with boss 320, preferably, a boss 320 is shared between two adjacent notches 310, the different boss 320 of length is could be arranged to positioned at two boss 320 of the notch 310 at two ends, two boss 320 can extend to concordant with the side of tool 300, size, the shape of other boss 320 are all identical, can be both configured to the boss 320 that cross section is rectangle.
The height of boss 320 could be arranged to the height equal to step 222, the length of step 222 is less than the width of the hypomere 220 of nozzle head 200, the bottom surface of hypomere 220 have with boss 320 against abutment face 255, abutment face 255 be respectively be located at the length direction of step 222 both sides.That is, the bottom surface of hypomere 220 of nozzle head 200 have both sides to be resisted against on the boss 320 on both sides, and the bottom surface of step 222 is resisted against the non-land area of tool 300, see from the outside, the hypomere 220 of nozzle head 200 some be caught between two boss of tool 300.When adsorbing LED chip, LED chip will not be adsorbed to other regions, and LED chip direction of motion in the notch 310 of tool 300 is vertical direction or is similar to vertical direction, will not produce deviation and crooked.
Above-mentioned depressed suction nozzle adsorption mechanism, due to being provided with notch on tool, nozzle head is fixed between tool and suction nozzle fixed block, and LED chip can enter to suction hole from notch, LED chip will not be shifted after being adsorbed in nozzle head with it is crooked.
Above-mentioned depressed suction nozzle adsorption mechanism, step is provided with the bottom of nozzle head, after being resisted against on tool, can carry out axially position to LED chip, it is ensured that the accuracy and stability of paster.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, combination not all possible to each technical characteristic in above-described embodiment is all described, but, as long as contradiction is not present in the combination of these technical characteristics, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of depressed suction nozzle adsorption mechanism, it is characterised in that including：
Multiple nozzle heads, the bottom of the nozzle head has a suction hole；
Suction nozzle fixed block, for fixing multiple nozzle heads；
Tool, the tool is provided with the multiple notches for adapting to LED chip to be mounted, the nozzle head card
Connect and be fixed between the suction nozzle fixed block and the tool and the suction hole of the nozzle head and notch company
It is logical.
2. depressed suction nozzle adsorption mechanism according to claim 1, it is characterised in that also including removable
Unload the bottom that is connected to the suction nozzle fixed block be used for by the nozzle head be fastened in the suction nozzle fixed block with
And for preventing the rotation-preventing mechanism of the nozzle head rotation.
3. depressed suction nozzle adsorption mechanism according to claim 2, it is characterised in that the anti-favourable turn
Structure includes the first anti-rotation sheet and the second anti-rotation sheet, and first anti-rotation sheet is provided with the width direction adapts to institute
State multiple breach of nozzle head；The side wall of the nozzle head is provided with screens portion, and the screens portion is resisted against institute
State the first anti-rotation sheet and/or the second anti-rotation sheet.
4. depressed suction nozzle adsorption mechanism according to claim 1, it is characterised in that the suction nozzle is consolidated
The bottom for determining block offers a fluting along its length, and the suction nozzle fixed block is provided with for being with vacuumizing
Multiple holding tanks respectively with the chamber are arranged side by side in the chamber of system connection, the fluting；It is described
Nozzle head includes the epimere and hypomere being coaxially disposed, and the epimere is at least part of to be plugged in the holding tank
It is interior.
5. depressed suction nozzle adsorption mechanism according to claim 4, it is characterised in that the holding tank
Circular in cross-section, the epimere is the cylinder for adapting to the holding tank.
6. depressed suction nozzle adsorption mechanism according to claim 5, it is characterised in that the hypomere
Cross section is rectangular, and the width of the hypomere is more than the diameter of the epimere.
7. depressed suction nozzle adsorption mechanism according to claim 4, it is characterised in that the hypomere
The both sides of bottom set a step respectively, and the relative side of two steps has an inclined-plane respectively, described
The bottom surface of step is resisted against the tool.
8. depressed suction nozzle adsorption mechanism according to claim 7, it is characterised in that between the tool
The notch is formed with every being provided between multiple boss, adjacent boss, the width of the hypomere is more than institute
State the width of notch.
9. depressed suction nozzle adsorption mechanism according to claim 8, it is characterised in that the boss
Highly it is equal to the height of the step, the length of the step is less than the width of the hypomere, the hypomere
Bottom surface have with the boss against abutment face, the abutment face is located at the step along length of bench respectively
The both sides in direction.
10. depressed suction nozzle adsorption mechanism according to claim 4, it is characterised in that the epimere
Top and the holding tank top between be provided with compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281704.XA CN107333400A (en) | 2016-04-29 | 2016-04-29 | Depressed suction nozzle adsorption mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281704.XA CN107333400A (en) | 2016-04-29 | 2016-04-29 | Depressed suction nozzle adsorption mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107333400A true CN107333400A (en) | 2017-11-07 |
Family
ID=60192341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610281704.XA Pending CN107333400A (en) | 2016-04-29 | 2016-04-29 | Depressed suction nozzle adsorption mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107333400A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110255251A (en) * | 2019-07-17 | 2019-09-20 | 安徽天通精电新科技有限公司 | A kind of braid feeding device and its application method for chip mounter |
| WO2020098055A1 (en) * | 2018-11-14 | 2020-05-22 | 惠科股份有限公司 | Transfer printing apparatus |
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| CN105472904A (en) * | 2015-12-24 | 2016-04-06 | 东莞中之光电股份有限公司 | LED lamp panel slice mounter capable of simultaneously adhering multiple LED lamp slices |
| CN205648216U (en) * | 2016-04-29 | 2016-10-12 | 深圳市炫硕光电科技有限公司 | Sunken formula suction nozzle auto sucking machine constructs |
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| JP2001191288A (en) * | 1999-11-05 | 2001-07-17 | Matsushita Electric Ind Co Ltd | Nozzle changing device and part mounting device |
| TWI257685B (en) * | 2005-05-26 | 2006-07-01 | Motech Taiwan Automatic Corp | IC pick-up head structure suitable for testing bases of different sizes |
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| CN110255251A (en) * | 2019-07-17 | 2019-09-20 | 安徽天通精电新科技有限公司 | A kind of braid feeding device and its application method for chip mounter |
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