CN103170703B - Turnable fixture for welding printed circuit board - Google Patents
Turnable fixture for welding printed circuit board Download PDFInfo
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- CN103170703B CN103170703B CN201310082718.5A CN201310082718A CN103170703B CN 103170703 B CN103170703 B CN 103170703B CN 201310082718 A CN201310082718 A CN 201310082718A CN 103170703 B CN103170703 B CN 103170703B
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- slide rail
- jig arm
- turning cylinder
- support column
- rotates
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Abstract
The invention discloses a turnable fixture for welding a printed circuit board. The turnable fixture for welding the printed circuit board comprises a horizontal pedestal, a first supporting column, a second supporting column, a first turning shaft, a second turning shaft, a first rotating beam, a second rotating beam, a first rotating clamping arm, a second rotating clamping arm, a third rotating clamping beam, a fourth rotating clamping arm, a first sliding rail, a second sliding rail, a third sliding rail, and a pressure-against contact head. The lower ends of the two supporting columns are respectively fixedly connected with the horizontal pedestal, and through holes are formed in the upper ends of the two supporting columns along the horizontal direction. The two turning shafts are respectively installed at the positions of the through holes, and one ends of the two turning shafts are respectively connected with the centers of the two rotating beams. The four rotating clamping arms are respectively installed at two ends of the each rotating beam. Two ends of the first sliding rail are respectively connected with the lower ends of two rotating clamping arms. Two ends of the second rail are respectively connected with the lower ends of the other two rotating clamping arms. Two ends of the third sliding rail are respectively connected with sliding blocks on the first sliding rail and the second sliding rail. The pressure-against contact head is installed on a sliding block of the third sliding rail.
Description
Technical field
The invention belongs to field of fixtures, more specifically, relate to a kind of Turnable fixture of welding printed circuit board (PCB).
Background technology
When manual welding printed circuit board, usually printed circuit board is lain against on workbench, then insert the element of band pin on a printed circuit board, then the another side turning to printed circuit board welds.Because the via hole on printed circuit board is generally large than component pin, therefore via hole and pin can not closely cooperate.When overturning printed circuit board, usually there will be element and dropping out, be shifted and irregular phenomenon, needing welding personnel repeatedly to operate, operating efficiency is reduced, weld also unsightly simultaneously.
When manual welding printed circuit board, usually need soldering surface mounted element, because surface mount elements does not have pin, when manual welding, usually first on a pad, put tin, tweezers are used to be placed on pad by surface mount elements with a hand again, another hand uses flatiron simultaneously, melts, the tin put in advance with one end of fixing surface mount elements, make when welding remainder, surface mount elements does not loosen.The phenomenon that this welding method usually can cause surface mount elements to weld out-of-flatness or displacement occurs, affects welding quality.
Summary of the invention
For the defect of prior art, the object of the present invention is to provide a kind of Turnable fixture of welding printed circuit board (PCB), be intended to solve in prior art and adopt manual welding printed circuit board that band pin element and surface mount elements can be caused to weld out-of-flatness or displacement, affect the problem of welding quality.
For achieving the above object, the invention provides a kind of Turnable fixture of welding printed circuit board (PCB), this fixture, while clamping printed circuit board, has one to compress contact, for being compressed on a printed circuit board by element.For the element of welded bands pin, turnable jig, makes printed circuit board turn to another side when welding, and compresses contact and bear against element and overturn thereupon, the element by compressing can not be come off or be shifted.For soldering surface mounted element, compress contact and can compress element, element can not be shifted, not needing on pad, put tin in advance can weld.
A kind of Turnable fixture of welding printed circuit board (PCB) provided by the invention, specifically comprises horizontal base, the first support column, the second support column, the first turning cylinder, the second turning cylinder, the first rotating beam, the second rotating beam, first rotates jig arm, the second rotation jig arm, the 3rd rotates jig arm, the 4th and rotates jig arm, the first slide rail, the second slide rail, the 3rd slide rail and compress contact; The lower end of described first support column is fixedly connected with described horizontal base is vertical respectively with the lower end of described second support column, the upper end of described first support column and the upper end edge horizontal direction of described second support column have through hole respectively, and described first support column and described second support column are about described horizontal base Central Symmetry; Described first turning cylinder is arranged on the through hole of described first support column upper end, and described second turning cylinder is arranged on the through hole of described second support column upper end; One end of described first turning cylinder is connected with the central vertical of described first rotating beam, and one end of described second turning cylinder is connected with the central vertical of described second rotating beam; The other end of described first turning cylinder or the other end of described second turning cylinder are used for connecting rocker arm; Described first rotates jig arm and described second rotates the two ends that jig arm is vertically mounted on described first rotating beam respectively; Described 3rd rotates jig arm and the described 4th rotates the two ends that jig arm is vertically mounted on described second rotating beam respectively; Described first slide rail, described second slide rail and described 3rd slide rail are all equipped with slide block, the two ends of described first slide rail rotate jig arm and the described 3rd respectively and rotate that the lower end of jig arm is vertical to be connected with described second, the two ends of described second slide rail rotate jig arm and the described 4th respectively and rotate that the lower end of jig arm is vertical to be connected with described first, the two ends of described 3rd slide rail are connected with the slide block on the slide block on described first slide rail and described second slide rail respectively; The described contact that compresses is arranged on the slide block of described 3rd slide rail, described in compress the plane orthogonal at contact and described first slide rail, described second slide rail and described 3rd slide rail place.
Present invention also offers a kind of Turnable fixture of welding printed circuit board (PCB), comprise horizontal base, the first support column, the second support column, the first turning cylinder, the second turning cylinder, the first rotating beam, the second rotating beam, first rotates jig arm, the second rotation jig arm, the 3rd rotates jig arm, the 4th and rotates jig arm, the first slide rail, the second slide rail, the 3rd slide rail and compress contact; The lower end of described first support column is fixedly connected with described horizontal base is vertical respectively with the lower end of described second support column, the upper end of described first support column and the upper end edge horizontal direction of described second support column have through hole respectively, and described first support column and described second support column are about described horizontal base Central Symmetry; Described first turning cylinder is arranged on the through hole of described first support column upper end, and described second turning cylinder is arranged on the through hole of described second support column upper end; One end of described first turning cylinder is connected with the central vertical of described first rotating beam, and one end of described second turning cylinder is connected with the central vertical of described second rotating beam; The other end of described first turning cylinder or the other end of described second turning cylinder are used for connecting rocker arm; Described first rotates jig arm and described second rotates the two ends that jig arm is vertically mounted on described first rotating beam respectively; Described 3rd rotates jig arm and the described 4th rotates the two ends that jig arm is vertically mounted on described second rotating beam respectively; Described first slide rail, described second slide rail and described 3rd slide rail are all equipped with slide block, the two ends of described first slide rail rotate jig arm and described second respectively and rotate that the lower end of jig arm is vertical to be connected with described first, the two ends of described second slide rail rotate jig arm and the described 4th respectively and rotate that the lower end of jig arm is vertical to be connected with the described 3rd, the two ends of described 3rd slide rail are connected with the slide block on the slide block on described first slide rail and described second slide rail respectively; The described contact that compresses is arranged on the slide block of described 3rd slide rail, described in compress the plane orthogonal at contact and described first slide rail, described second slide rail and described 3rd slide rail place.
Present invention also offers a kind of Turnable fixture of welding printed circuit board (PCB), comprise horizontal base, the first support column, the second support column, the first turning cylinder, the second turning cylinder, the first rotation jig arm, the second rotation jig arm, the first slide rail, the second slide rail and compress contact; The lower end of described first support column is fixedly connected with described horizontal base is vertical respectively with the lower end of described second support column, the upper end of described first support column and the upper end edge horizontal direction of described second support column have through hole respectively, and described first support column and described second support column are about described horizontal base Central Symmetry; Described first turning cylinder is arranged on the through hole of described first support column upper end, and described second turning cylinder is arranged on the through hole of described second support column upper end; The two ends of described first slide rail are connected with one end of described first turning cylinder and one end of described second turning cylinder respectively; The other end of described first turning cylinder or the other end of described second turning cylinder are used for connecting rocker arm; Described first rotation jig arm and described second rotates jig arm and is connected with the first slide rail is vertical respectively, when shake be positioned at the described first turning cylinder other end or be positioned at the described rocking arm of the described second turning cylinder other end time, described first slide rail rotates and drives described first to rotate jig arm and described second and rotates jig arm and overturn together with described first turning cylinder or described second turning cylinder; Described first slide rail and described second slide rail are all equipped with slide block, described second slide rail is arranged on the slide block of described first slide rail, the described contact that compresses is arranged on the slide block of described second slide rail, described in compress the plane orthogonal at contact and described first slide rail and described second slide rail place.
Further, described first rotation jig arm and described second rotates the two ends that jig arm is vertically connected on described first slide rail respectively; Or described first rotates jig arm and described second and rotates jig arm and to be connected on described first turning cylinder and described second turning cylinder and vertical with described first slide rail.
Present invention also offers a kind of Turnable fixture of welding printed circuit board (PCB), comprise horizontal base, support column, turning cylinder, rotating beam, the first rotation jig arm, the second rotation jig arm, the first slide rail, the second slide rail, the 3rd slide rail and compress contact; Described support column is fixedly connected with described horizontal base is vertical, and the upper end edge horizontal direction of described support column has through hole; Described turning cylinder is arranged on the through hole of described support column upper end, and one end of described turning cylinder is connected with the central vertical of described rotating beam, and the other end of described turning cylinder is connected with a rocking arm; Described first rotates jig arm and described second rotates the two ends that jig arm is vertically mounted on described rotating beam respectively; Described first slide rail, described second slide rail and described 3rd slide rail are all equipped with slide block, one end and described second of described first slide rail rotates that the lower end of jig arm is vertical to be connected, one end and described first of described second slide rail rotates that the lower end of jig arm is vertical to be connected, and the two ends of described 3rd slide rail are connected with the slide block on the slide block on described first slide rail and described second slide rail respectively; The other end of described first slide rail and the other end of described second slide rail is all unsettled does not connect; The described contact that compresses is arranged on the slide block of described 3rd slide rail, described in compress the plane orthogonal at contact and described first slide rail, described second slide rail and described 3rd slide rail place.
Further, described first rotation jig arm is identical with the second rotating clamp arm configuration; First rotates jig arm comprises tubing string shell, chuck, telescopic arm, the stem stem of band gear, jig arm rotational lock bolt and jig arm telescopic locking bolt; The stiff end of described telescopic arm is connected with the stem stem of described band gear, and the expansion end of described telescopic arm is connected with described chuck; The stem stem of described band gear is arranged in described tubing string shell, and the stem stem of described band gear can rotate around its stem stem axial line; Described tubing string shell has tapped through hole, for coordinating with described jig arm rotational lock bolt; Described telescopic arm has tapped through hole, for coordinating with described jig arm telescopic locking bolt.
Further, compress contact described in comprise shell, motion bar, motion bar stem stem, compress clamping screw, contact and spring; Described motion bar is positioned at described shell, described motion bar stem stem is positioned at described motion bar, the described clamping screw that compresses contacts with described motion bar when tightening, described in tightening, compress clamping screw to be reached through the object that the stiction compressed between clamping screw and motion bar stops described motion bar movement; Described contact is connected by the upper end of screw thread with described motion bar stem stem; Described motion bar stem stem can move up and down along the inwall of described motion bar; One end of described spring is fixed on the outer wall of described motion bar, and the other end of described spring contacts with the prominence on described motion bar stem stem top; Described movable stem stem is driven to move along the inwall of described motion bar by the stretching motion of described spring.
Further, described contact is conical contact or head is the contact of strip.
Further, the chute of described slide rail is semi-shaped, and chute is built with the rubber strip of strip; Described slide rail is all equipped with slide block, described slide block has screw and is furnished with slide-and-lock bolt, there is movable head described slide block inside; By screwing described slide-and-lock bolt, described slide block internal activity head is contacted with described rubber strip, thus by the stiction between described slide block internal activity head and described rubber strip, described slide block is maintained static.
Further, compressing contact keeps relative position constant with the rotation jig arm fixing to clamp printed circuit board when flip-flop movement.
The Turnable fixture of welding printed circuit board provided by the invention, when manual welding printed circuit board, can by the clamp of rotation jig arm upper end used for printed circuit board.When the element of welded bands pin, drive printed circuit board to be turned to the back side by rocker arms roll turning cylinder, and lock turning cylinder.After insertion element pin, slide and compress contact and compress element, and lock slider with compress contact, and then unlocking turning cylinder, shake rocking arm, makes printed circuit board be turned to front to weld, ensure that element can not come off or be shifted, make welding smooth, convenient, fast, attractive in appearance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Turnable fixture of the welding printed circuit board (PCB) that first embodiment of the invention provides;
Fig. 2 is the structural representation of the horizontal base in the Turnable fixture of the welding printed circuit board (PCB) that the embodiment of the present invention provides;
Fig. 3 is the structural representation of the support column in the Turnable fixture of the welding printed circuit board (PCB) that the embodiment of the present invention provides;
Fig. 4 is the structural representation of the support column in the Turnable fixture of the welding printed circuit board (PCB) that the embodiment of the present invention provides;
Fig. 5 is the structural representation of the support column in the Turnable fixture of the welding printed circuit board (PCB) that the embodiment of the present invention provides;
Fig. 6 is the structural representation of turning cylinder and rotating beam in the Turnable fixture of the welding printed circuit board (PCB) that the embodiment of the present invention provides;
Fig. 7 is the structural representation of rotating beam in the Turnable fixture of the welding printed circuit board (PCB) that the embodiment of the present invention provides;
Fig. 8 is the another kind of structural representation of rotating beam in the Turnable fixture of the welding printed circuit board (PCB) that the embodiment of the present invention provides;
Fig. 9 is the structural representation rotating jig arm in the Turnable fixture of the welding printed circuit board (PCB) that the embodiment of the present invention provides;
Figure 10 is slide rail and the structural representation compressing contact in the Turnable fixture of the welding printed circuit board (PCB) that the embodiment of the present invention provides;
Figure 11 is the structural representation of the slide block in the Turnable fixture of the welding printed circuit board (PCB) that the embodiment of the present invention provides on slide rail;
Figure 12 is the structural representation compressing contact in the Turnable fixture of the welding printed circuit board (PCB) that the embodiment of the present invention provides;
Figure 13 is the structural representation of the Turnable fixture of the welding printed circuit board (PCB) that third embodiment of the invention provides;
Figure 14 is the structural representation of the Turnable fixture of the welding printed circuit board (PCB) that fourth embodiment of the invention provides.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of with auxiliary compress contact, rotating, for the fixture of manual welding printed circuit board; This Turnable fixture makes convenient welding, attractive in appearance, and can increase work efficiency.Fig. 1 shows the concrete structure of the Turnable fixture of the welding printed circuit board (PCB) that first embodiment of the invention provides, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention, details are as follows:
The Turnable fixture of welding printed circuit board (PCB) comprises horizontal base 1, first support column 21, second support column 22, first turning cylinder 31, second turning cylinder 32, first rotating beam 41, second rotating beam 42, first and rotates jig arm 51, second rotation jig arm 52, the 3rd rotation jig arm 53, the 4th rotation jig arm 54, first slide rail 61, second slide rail 62, the 3rd slide rail 63 and compress contact 7; The lower end of the first support column 21 is fixedly connected with horizontal base 1 is vertical respectively with the lower end of the second support column 22, the upper end of the first support column 21 and the upper end edge horizontal direction of the second support column 22 have through hole respectively, and the first support column 21 and the second support column 22 are about horizontal base 1 Central Symmetry; First turning cylinder 31 is arranged on the through hole of the first support column 21 upper end, and the second turning cylinder 32 is arranged on the through hole of the second support column 22 upper end; One end of first turning cylinder 31 is connected with the central vertical of the first rotating beam 41, and one end of the second turning cylinder 32 is connected with the central vertical of the second rotating beam 42; The other end of the first turning cylinder 31 or the other end of the second turning cylinder 32 are used for connecting rocker arm; First rotates jig arm 51 and second rotates the two ends that jig arm 52 is vertically mounted on the first rotating beam 41 respectively; 3rd rotates jig arm 53 and the 4th rotates the two ends that jig arm 54 is vertically mounted on the second rotating beam 42 respectively; First slide rail 61, second slide rail 62 and the 3rd slide rail 63 are all equipped with slide block, the two ends of the first slide rail 61 rotate jig arm 52 and the 3rd respectively and rotate that the lower end of jig arm 53 is vertical to be connected with second, the two ends of the second slide rail 62 rotate jig arm 51 and the 4th respectively and rotate that the lower end of jig arm 54 is vertical to be connected with first, the two ends of the 3rd slide rail 63 are connected with the slide block on the slide block on the first slide rail 61 and the second slide rail 62 respectively; Compress contact 7 to be arranged on the slide block of the 3rd slide rail 63, compress the plane orthogonal at contact 7 and the first slide rail 61, second slide rail 62 and the 3rd slide rail 63 place.
By shaking the rocking arm of first turning cylinder 31 other end, drive the first turning cylinder 31 to rotate around the center line of axle, because one end of the first turning cylinder 31 is connected with the first rotating beam 41, therefore the center line of drive first rotating beam 41 around axle rotates by the first turning cylinder 31.Meanwhile, rotate jig arm 52 be connected because the first rotating beam 41 and first rotates jig arm 51 and second, therefore first rotates jig arm 51 and second and rotate jig arm 52 and driven upset by the first rotating beam 41.And second rotates jig arm 52 and first and rotates jig arm 51 and rotate jig arm 53 and the 4th respectively by the first slide rail 61 and the second slide rail 62 and the 3rd and rotate jig arm 54 and be connected, and whole fixture becomes symmetrical structure, therefore can by rotate be delivered to offside the second rotating beam 42 and the second turning cylinder 32 on, realize flip-flop movement.
When manual welding printed circuit board, four of a printed circuit board pin can be separately fixed at the first rotation jig arm 51, second to rotate in jig arm 52, the 3rd rotation jig arm 53 and the 4th rotation jig arm 54, make printed circuit board parallel with the 3rd slide rail 63 place plane with the first slide rail 61, second slide rail 62.When element is placed on a printed circuit board, the available contact 7 that compresses compresses element, and can slide on the first slide rail 61 and the second slide rail 62, compress contact 7 and can slide on the 3rd slide rail 63 due to the 3rd slide rail 63, therefore compress contact 7 and can compress element at whole printed circuit board plane.When rotating jig arm upset, drive printed circuit board and three one slide rails are overturn simultaneously, make to compress contact 7 and can not have relative motion because of flip-flop movement with printed circuit board, thus ensure that the element by compressing can not come off, be shifted, make when the another side welding being turned to printed circuit board, easy to operate, weld attractive in appearance.
As shown in Figure 2, in the first embodiment of the present invention, the structure of horizontal base 1 can be rectangular structure (as shown in Figure 2 (a) shows), and also can be two ends is cuboid, the middle structure (as Suo Shi Fig. 2 (b)) etc. connected by thin bar.The Main Function of horizontal base 1 is: support and stablize whole fixture, keeps fixture level and making to be arranged on support column on horizontal base 1 about horizontal base 1 Central Symmetry.
As shown in Figure 3, there is through hole the upper end of the first support column 21 and the second support column 22, for installing turning cylinder, can have tapped through hole, for coordinating with rotation lock bolt 9, with the rotation lock by turning cylinder at top simultaneously.
As shown in Figure 4, the first support column 21 can also be that the thick lower end of elliptical cylinder (as shown in Figure 4 (b)) or upper end thin (as shown in Figure 4 (c)) or tapped through hole are driveed in structures such as side (as Suo Shi Fig. 4 (d)) for the same thickness in lower end, upper end (as shown in Figure 4 (a)) or lower end with the second support column 22.
As shown in Figure 5, Fig. 5 (a) represents support column overall structure schematic diagram, and Fig. 5 (b) represents support column internal height governor motion schematic diagram.First support column 21 and the second support column 22 also can have the function highly regulated.As shown in Fig. 5 (b), the structure that first support column 21 and the second support column 22 can take height as described below to regulate: there is the stem stem of a band tooth bar support column inside, by rotating the gear matched with stem stem tooth bar, stem stem can be made to move up and down, realizing the adjustment of height.When a certain position need be fixed on, only need tightens corresponding bolt, gear is blocked.In order to save space, be not described in detail in this.
As shown in Figure 6, one end of the first turning cylinder 31 is connected to the center of the first rotating beam 41, and the other end of the first turning cylinder 31 is used for connecting rocker arm 8; The two ends of the first rotating beam 41 have groove structure 10, for connecting rotation jig arm; There is a gear structure at the middle part of the first turning cylinder 31; When shaking rocking arm 8, the first turning cylinder 31 rotates around its axis, and the gear on the first turning cylinder 31 also and then rotates, when rotation will be made to stop at a certain position, by screwing the rotation lock bolt 9 be arranged on the first support column 21, to clamp gear, rotation is stopped.The structure of the first turning cylinder 31 and the second turning cylinder 32 is basically identical, for saving space, is not described in detail in this.
As shown in Figure 7, the two ends and first of the first rotating beam 41 rotate jig arm 51 and second and rotate jig arm 52 and be connected, and the center of the first rotating beam 41 is connected with one end of the first turning cylinder 31.When the first turning cylinder 31 rotates, the first rotating beam 41 rotates thereupon, thus drives the first rotation jig arm 51 and the second rotation jig arm 52 to overturn.The two ends of the first rotating beam 41 can be groove (as Fig. 7 (a), 7(c), 7(d) shown in), the structure such as through hole (as shown in Figure 7 (b) shows) or strip (as Suo Shi Fig. 7 (e)), for ensureing that the first rotation jig arm 51 and the second rotation jig arm 52 can be vertical and be firmly arranged on the two ends of the first rotating beam 41.The middle part of the first rotating beam 41 can be manhole (as Fig. 7 (a), 7(b), 7(c) shown in), shown in square through hole (as Fig. 7 (d), 7(e)), the structure such as internal tooth through hole, tapped through hole, for ensureing that the first rotating beam 41 firmly can be arranged on one end of the first turning cylinder 31 and can rotate by the first turning cylinder 31 thereupon.The structure of the rotation jig arm that the structure at the first rotating beam 41 two ends needs and is attached thereto adapts, when the position that rotation jig arm is connected with the first rotating beam 41 has groove or through hole, the two ends of the first rotating beam 41 can adopt list structure (as Suo Shi Fig. 7 (e)).When to rotate the position that is connected with the first rotating beam 41 of jig arm be list structure, the two ends of the first rotating beam 41 can adopt groove or through-hole structure (as Fig. 7 (a), 7(b), 7(c), 7(d) shown).Structure in the middle part of first rotating beam 41 need adapt with the structure of first turning cylinder 31 one end, when one end that the first turning cylinder 31 is connected with the first rotating beam 41 is cylindrical structural, manhole (as Fig. 7 (a), 7(b), 7(c in the middle part of the first rotating beam 41, should be adopted) shown in).When one end that the first turning cylinder 31 is connected with the first rotating beam 41 is square structure, should adopt in the middle part of the first rotating beam 41 shown in square through hole (as Fig. 7 (d), 7(e)).First rotating beam 41 is identical with the structure of the second rotating beam 42, for saving space, is not described in detail in this.
As shown in Figure 8, the beam body itself of the first rotating beam 41 and the second rotating beam 42 also can be other structures, the beam body of rotating beam itself can be made up of external beam shell and inner tooth bar, inner tooth bar can be movable along external beam shell, when fixing, the bolt on beam shell mounted externally can be tightened, clamp inner tooth bar, thus make rotating beam have the function of telescopic.
As shown in Figure 9, Fig. 9 (a) is the overall structure schematic diagram of the first rotation jig arm 51, and Fig. 9 (b) is the internal structure schematic diagram of the first rotation jig arm 51.First rotates jig arm 51 can by tubing string shell 11(as Suo Shi Fig. 9 (a)), chuck 12, telescopic arm 13, be with the stem stem 14 of gear, jig arm rotational lock bolt 15 and jig arm telescopic locking bolt 16(as shown in Figure 9 (b)) form.One end of telescopic arm 13 is fixed on the stem stem 14 of band gear, is stiff end.The other end connecting clip 12 of telescopic arm 13 is telescopic end.Stem stem 14 with gear is arranged on the inside of tubing string shell 11, and the stem stem 14 of band gear can rotate around its stem stem axial line, but can not up and down or move left and right.Square tubing string shell 11 there is tapped through hole, for coordinating with jig arm rotational lock bolt 15.Telescopic arm 13 also there is tapped through hole, for coordinating with jig arm telescopic locking bolt 16.Wherein tubing string shell 11 can be rectangular tube post shell (as shown in Figure 9), also can be circular tubing string shell (not providing figure in Fig. 9).
As shown in Figure 9, first rotates the stem stem 14 that the rotatable part of jig arm 51 is band gear and the telescopic arm 13 be attached thereto, and tubing string shell 11 can not rotate by its post center line.When the telescopic arm of rotation jig arm will be made to rotate, first need turn on jig arm rotational lock bolt 15, make jig arm rotational lock bolt 15 with band gear stem stem 14 on gear be separated, thus make telescopic arm 13 can in the plane vertical with square tubing string shell 11 360 degree rotate.When rotating to certain angle and needing to make it fixing, can tighten jig arm rotational lock bolt 15, make jig arm rotational lock bolt 15 and the Gear Contact on the stem stem 14 of band gear, the stem stem 14 of band gear is locked with telescopic arm 13.The expansion end of telescopic arm 13 is connected with chuck 12, when needs extend chuck 12, first can turn on jig arm telescopic locking bolt 16, the expansion end of telescopic arm 13 is moved along the stiff end of telescopic arm 13, realize shortening and the elongation of telescopic arm 13 length.When need fix to a certain length when stretching, can tighten jig arm telescopic locking bolt 16, make jig arm telescopic locking bolt 16 pass the through hole of telescopic arm 13 stiff end and expansion end, length is fixed.The precision of telescopic moving is determined by the via densities on the stiff end of telescopic arm 13 and expansion end, and the minimax scope of telescopic moving is determined by the stiff end of telescopic arm 13 and the length of expansion end.Simultaneously, when the printed circuit board that need clamp is heavier, use chuck 12 to clamp printed circuit board may occur loosening, at this moment the expansion end of telescopic arm 13 can be taken off, the through hole that printed circuit board is fixed is alignd with the through hole on telescopic arm 13 stiff end, and fixed by additional bolts and nuts, to guarantee to fasten printed circuit board.In addition, first rotates jig arm 51 also can have other structures, lower end as the stem stem 14 of inner band gear is a rack structure, tubing string shell 11 is provided with the gear matched with this rack structure, pass through transmitting gear, tooth bar is moved up and down, thus makes the first rotation jig arm 51 have the function highly regulated.It is identical that first rotates jig arm 51, second rotation jig arm 52, the 3rd rotation jig arm 53 and the 4th rotates jig arm 54 structure, for saving space, is not described in detail in this.
As shown in Figure 10 and Figure 11, the birds-eye perspective that Figure 11 (b) is slide rail shown in Figure 11 (a) and slide block, the side cutaway view that Figure 11 (c) is slide rail in Figure 11 (a) and slide block.First slide rail 61, second slide rail 62 is substantially identical with the 3rd slide rail 63 structure, and three slide blocks 17 are set on the first slide rail 61, second slide rail 62 and the 3rd slide rail 63; Slide block 17 is made up of slide block shell 18, slide block internal activity head 23, nut 24 and slide-and-lock bolt 25; As shown in Figure 11 (c), the chute 19 of slide rail is semi-shaped, and chute is built with the rubber strip 20 of strip.When slide block 17 needs a certain position being fixed on slide rail, the slide-and-lock bolt 25 on slide block 17 need be screwed, slide block internal activity head 23 is contacted with rubber strip 20, thus makes slide block 17 stop sliding by the stiction between rubber strip 20 and slide block internal activity head 23.Slide block internal activity head 23 one of contacting with rubber strip 20 also can be a rectangular rubber block, with increasing friction force, and reduces the damage to chute 19.
As shown in figure 12, Figure 12 (a) is for compressing structure of contact terminal schematic diagram, and Figure 12 (b) is for compressing the top view of contact shown in Figure 12 (a), Figure 12 (c) is for compressing the profile of contact along A-A direction in Figure 12 (b).Compress contact 7 by compressing contact shell 26, motion bar 27, motion bar stem stem 30, compress clamping screw 28, removable contact 29 and spring 33 and form.After turning on and compressing clamping screw 28, motion bar 27 can move along compressing contact shell 26, makes to compress contact and is extended and shorten.When tighten compress clamping screw 28 time, compress locking contact 28 contact with motion bar 27, stoped the movement of motion bar 27 by stiction.Compress the contact head that clamping screw 28 contacts with motion bar 27 and can adopt Rubber end, motion bar 27 can cover one deck rubber layer with compressing on contact surface that contact 28 contacts, to increase stiction, prevent motion bar 27 from moving, reduce to tighten the damage that the power that compresses that produces when compressing clamping screw 28 causes motion bar 27 simultaneously.Meanwhile, there is a motion bar stem stem 30 motion bar 27 inside, and motion bar stem stem 30 can move up and down along the inwall of motion bar 27, and spring 33 is equipped with on motion bar stem stem 30 top.One end of spring 33 can be fixed on the outer wall of motion bar 27, and the other end is free end, contacts with the prominence on motion bar stem stem 30 top.When motion bar 27 maintains static, the stiff end of spring 33 also maintains static, and at this moment because spring 33 will extend, moves, the inwall driving motion bar stem stem 30 along motion bar 27 until compress element.When having compressed an element, another element need be changed when compressing, only need stir and compressing contact, spring 33 is compressed, can realize compressing being separated of contact and element.Within the scope of the natural length of spring 33, can automatically compressing of contact be realized, and do not need repeatedly to tighten turn on compress locking contact 28, make easy to operate.Removable contact 29 is connected by the upper end of screw thread with motion bar stem stem 30.When component size is less, conical small contact as shown in Figure 12 can be adopted to compress, when component size is larger, replaceable larger-size contact.Especially, when same element is arranged in a row on a printed circuit board, removable contact 29 can be replaced with the contact that head is strip, to compress the element be arranged in a row simultaneously, reduce upset number of times, improve welding efficiency.
(not shown) in second embodiment of the invention, the Turnable fixture of welding printed circuit board (PCB) comprises horizontal base 1, first support column 21, second support column 22, first turning cylinder 31, second turning cylinder 32, first rotating beam 41, second rotating beam 42, first and rotates jig arm 51, second rotation jig arm 52, the 3rd rotation jig arm 53, the 4th rotation jig arm 54, first slide rail 61, second slide rail 62, the 3rd slide rail 63 and compress contact 7; Second embodiment is compared with the first embodiment, and the first slide rail 61 is different from the connected mode rotating jig arm with the second slide rail 62, and other parts and annexation are all the same; In a second embodiment, the two ends of the first slide rail 61 rotate jig arm 51 and second respectively and rotate that the lower end of jig arm 52 is vertical to be connected with first, and the two ends of the second slide rail 62 rotate jig arm 53 and the 4th respectively and rotate that the lower end of jig arm 54 is vertical to be connected with the 3rd.
In third embodiment of the invention, as shown in figure 13, the Turnable fixture of welding printed circuit board (PCB) comprises horizontal base 1, first support column 21, second support column 22, first turning cylinder 31, second turning cylinder 32, first and rotates jig arm 51, second rotation jig arm 52, first slide rail 61, second slide rail 62 and compress contact 7; The lower end of the first support column 21 is fixedly connected with horizontal base 1 is vertical respectively with the lower end of the second support column 22, the upper end of the first support column 21 and the upper end edge horizontal direction of the second support column 22 have through hole respectively, and the first support column 21 and the second support column 22 are about horizontal base 1 Central Symmetry; First turning cylinder 31 is arranged on the through hole of the first support column 21 upper end, and the second turning cylinder 32 is arranged on the through hole of the second support column 22 upper end; The two ends of the first slide rail 61 are connected with one end of the first turning cylinder 31 and one end of the second turning cylinder 32 respectively; The other end of the first turning cylinder 31 or the other end of the second turning cylinder 32 are used for connecting rocker arm; First rotates jig arm 51 and second rotates the two ends that jig arm 52 can be vertically mounted on the first slide rail 61 respectively, also can be arranged on respectively on the first turning cylinder 31 and the second turning cylinder 32, but need ensure vertical with the first slide rail 61.When shake be positioned at first turning cylinder 31 other end or be positioned at the rocking arm of second turning cylinder 32 other end time, the first slide rail 61 rotates and drives the first rotation jig arm 51 and second to rotate jig arm 52 and overturns together with the first turning cylinder 31 or the second turning cylinder 32; First slide rail 61 and the second slide rail 62 are all equipped with slide block, and the second slide rail 62 is arranged on the slide block 17 of the first slide rail, and the second slide rail 62 can with the connecting portion of slide block 17 and the second slide rail 62 for axle rotates.Compress contact 7 to be arranged on the slide block of the second slide rail 62, compress the plane orthogonal at contact 7 and the first slide rail 61 and the second slide rail 62 place.
In third embodiment of the invention, structure and the connected mode of horizontal base 1, first support column 21, second support column 22, first turning cylinder 31 and the second turning cylinder 32 can adopt the structure shown in first embodiment of the invention and connected mode, in order to save space, be not described in detail in this.The two ends of the first slide rail 61 are directly connected with the first turning cylinder 31 one end with the second turning cylinder 32, and two rotate jig arm 51 and 52 and the first slide rail 61 and form half I-shaped.When shake is positioned at the rocking arm of turning cylinder 31 other end, the first slide rail 61 rotates together with the first turning cylinder 31, drives two to rotate jig arm 51 and 52 simultaneously and overturns.First slide rail 61 is equipped with slide block 17, slide block 17 is provided with the second slide rail 62, the connected mode of slide block 17 and the second slide rail 62 can adopt the structure of similar rotation jig arm as shown in Figure 9, namely the short stem stem of a band gear is had in slide block 17 inside, this short stem stem top is connected with one end of the second slide rail 62, and the part of short stem stem lower bands gear is inner at slide block 17.Such second slide rail 62 can around the axial line 360 degree rotation of short stem stem, when fixing, only need tighten and is arranged on slide block 17 and cogs the bolt matched with short stem stem, to clamp the gear on short stem stem.The structure of the first slide rail 61 and the second slide rail 62 all can adopt rail structure as shown in Figure 11, but for the structure at slide rail two ends, needs adjust accordingly according to the concrete shape of the parts be attached thereto and structure, is not described in detail in this.The realization of the slide-and-lock function of slide block 17 can adopt structure as shown in figure 11.The slide block of the second slide rail 62 is provided with and compresses contact 7, compress contact 7 and can adopt structure as shown in figure 12, be not described in detail in this.
In third embodiment of the invention, when welding printed circuit board, the two ends of printed circuit board clamp by available two rotation jig arm 51 and 52, make printed circuit board plane vertical with 52 with rotation jig arm 51.Compress contact 7 to slide on the second slide rail 62, and slide rail 62 is rotatable, therefore the element that can realize in whole printed circuit board plane compresses.Shake rocking arm can driven rotary jig arm 51 and 52 and compress contact 7 and overturn simultaneously, thus makes when being turned to printed circuit board another side and welding, and element can not come off.In third embodiment of the invention, two are only had to rotate jig arm, this structure only has the clamp structure of two rotation jig arm to be more suitable for compared with the structure in first embodiment of the invention, and size is less, the welding of the printed circuit board of lighter in weight, simultaneously because whole clamp structure is simpler than the structure in first embodiment of the invention, be more suitable for the welding of surface mount elements.
In fourth embodiment of the invention, as shown in figure 14, the Turnable fixture of welding printed circuit board (PCB) comprises horizontal base 1, support column 2, turning cylinder 3, rotating beam 4, first rotation jig arm 51, second rotation jig arm 52, first slide rail 61, second slide rail 62, the 3rd slide rail 63 and compresses contact 7; Support column 2 is fixedly connected with horizontal base 1 is vertical, and the upper end edge horizontal direction of support column 2 has through hole respectively; Turning cylinder 3 is arranged on the through hole of support column 2 upper end, and one end of turning cylinder 3 is connected with the central vertical of rotating beam 4, and the other end of turning cylinder 31 is used for connecting rocker arm; First rotates jig arm 51 and second rotates the two ends that jig arm 52 is vertically mounted on rotating beam 4 respectively; First slide rail 61, second slide rail 62 and the 3rd slide rail 63 are all equipped with slide block, one end and second of first slide rail 61 rotates that the lower end of jig arm 52 is vertical to be connected, one end of second slide rail 62 rotates that the lower end of jig arm 51 is vertical to be connected respectively with first, the two ends of the 3rd slide rail 63 are connected with the slide block on the slide block on the first slide rail 61 and the second slide rail 62 respectively; The other end of the first slide rail 61 and other end of the second slide rail 62 is all unsettled does not connect; Compress contact 7 to be arranged on the slide block of the 3rd slide rail 63, compress the plane orthogonal at contact 7 and the first slide rail 61, second slide rail 62 and the 3rd slide rail 63 place.
It is identical with the first embodiment with their connected modes each other that horizontal base 1 in 4th embodiment, support column 2, turning cylinder 3, rotating beam 4, first rotate structure that jig arm 51, second rotates jig arm 52, first slide rail 61, second slide rail 62, the 3rd slide rail 63 and compress contact 7, is not described in detail in this.But because the 4th embodiment provides a kind of semi-enclosed unsymmetric structure, in order to make whole fixture stablize, the volume and weight of horizontal base 1 and support column 2 needs to strengthen.The fixture of this semi-enclosed unsymmetric structure that the 4th embodiment provides is relative to the structure shown in the first embodiment, be more suitable for that size is less, the welding of the printed circuit board of lighter in weight, simultaneously because whole clamp structure is simpler than structure shown in the first embodiment, be more suitable for the welding of surface mount elements.
In embodiments of the present invention, Turnable fixture also can be only has the semi-enclosed structure that rotates jig arm, is applicable to little, the lightweight printed circuit board welding of size.Because length limit, be not described in detail in this.
The Turnable fixture that welding provided by the invention is used for printed circuit board, while clamping printed circuit board, has one to compress contact, for being compressed on a printed circuit board by element.For the element of welded bands pin, turnable jig, makes printed circuit board turn to another side when welding, and compresses contact and bear against element and overturn thereupon, the element by compressing can not be come off or be shifted.For soldering surface mounted element, compress contact and can compress element, element can not be shifted, not needing on pad, put tin in advance can weld.Specifically, when manual welding printed circuit board, can by the clamp of rotation jig arm upper end used for printed circuit board.When the element of welded bands pin, drive printed circuit board to be turned to the back side by rocker arms roll turning cylinder, and lock turning cylinder.After insertion element pin, slide and compress contact and compress element, and lock slider with compress contact, and then unlocking turning cylinder, shake rocking arm, makes printed circuit board be turned to front to weld, ensure that element can not come off or be shifted, make convenient welding, quick, attractive in appearance.
In the Turnable fixture that welding provided by the invention is used for printed circuit board, rotate jig arm and there is rotation and Telescopic, can match with the printed circuit board of different size, applied widely.
In the Turnable fixture that welding provided by the invention is used for printed circuit board, for the welding of band pin element, due in the present invention to compress contact replaceable at contact part, the element being applicable to different size compresses and can compress multiple element simultaneously, practical.For the welding of surface mount elements, the replaceable little contact that compresses compresses surface mount elements, does not need to put tin in advance, can directly weld, convenient and swift, and makes welding smooth.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. weld a Turnable fixture for printed circuit board (PCB), comprise horizontal base, the first support column, the second support column, the first turning cylinder and the second turning cylinder; It is characterized in that, also comprise: the first rotating beam, the second rotating beam, first rotate jig arm, second and rotate jig arm, the 3rd rotation jig arm, the 4th rotation jig arm, the first slide rail, the second slide rail, the 3rd slide rail and compress contact;
The lower end of described first support column is fixedly connected with described horizontal base is vertical respectively with the lower end of described second support column, the upper end of described first support column and the upper end edge horizontal direction of described second support column have through hole respectively, and described first support column and described second support column are about described horizontal base Central Symmetry;
Described first turning cylinder is arranged on the through hole of described first support column upper end, and described second turning cylinder is arranged on the through hole of described second support column upper end; One end of described first turning cylinder is connected with the central vertical of described first rotating beam, and one end of described second turning cylinder is connected with the central vertical of described second rotating beam; The other end of described first turning cylinder or the other end of described second turning cylinder are used for connecting rocker arm;
Described first rotates jig arm and described second rotates the two ends that jig arm is vertically mounted on described first rotating beam respectively; Described 3rd rotates jig arm and the described 4th rotates the two ends that jig arm is vertically mounted on described second rotating beam respectively;
Described first slide rail, described second slide rail and described 3rd slide rail are all equipped with slide block, the two ends of described first slide rail rotate jig arm and the described 3rd respectively and rotate that the lower end of jig arm is vertical to be connected with described second, the two ends of described second slide rail rotate jig arm and the described 4th respectively and rotate that the lower end of jig arm is vertical to be connected with described first, the two ends of described 3rd slide rail are connected with the slide block on the slide block on described first slide rail and described second slide rail respectively;
The described contact that compresses is arranged on the slide block of described 3rd slide rail, described in compress the plane orthogonal at contact and described first slide rail, described second slide rail and described 3rd slide rail place.
2. weld a Turnable fixture for printed circuit board (PCB), comprise horizontal base, the first support column, the second support column, the first turning cylinder and the second turning cylinder; It is characterized in that, also comprise: the first rotating beam, the second rotating beam, first rotate jig arm, second and rotate jig arm, the 3rd rotation jig arm, the 4th rotation jig arm, the first slide rail, the second slide rail, the 3rd slide rail and compress contact;
The lower end of described first support column is fixedly connected with described horizontal base is vertical respectively with the lower end of described second support column, the upper end of described first support column and the upper end edge horizontal direction of described second support column have through hole respectively, and described first support column and described second support column are about described horizontal base Central Symmetry;
Described first turning cylinder is arranged on the through hole of described first support column upper end, and described second turning cylinder is arranged on the through hole of described second support column upper end; One end of described first turning cylinder is connected with the central vertical of described first rotating beam, and one end of described second turning cylinder is connected with the central vertical of described second rotating beam; The other end of described first turning cylinder or the other end of described second turning cylinder are used for connecting rocker arm;
Described first rotates jig arm and described second rotates the two ends that jig arm is vertically mounted on described first rotating beam respectively; Described 3rd rotates jig arm and the described 4th rotates the two ends that jig arm is vertically mounted on described second rotating beam respectively;
Described first slide rail, described second slide rail and described 3rd slide rail are all equipped with slide block, the two ends of described first slide rail rotate jig arm and described second respectively and rotate that the lower end of jig arm is vertical to be connected with described first, the two ends of described second slide rail rotate jig arm and the described 4th respectively and rotate that the lower end of jig arm is vertical to be connected with the 3rd, the two ends of described 3rd slide rail are connected with the slide block on the slide block on described first slide rail and described second slide rail respectively;
The described contact that compresses is arranged on the slide block of described 3rd slide rail, described in compress the plane orthogonal at contact and described first slide rail, described second slide rail and described 3rd slide rail place.
3. weld a Turnable fixture for printed circuit board (PCB), comprise horizontal base, the first support column, the second support column, the first turning cylinder and the second turning cylinder; It is characterized in that, also comprise: first rotates jig arm, second rotates jig arm, the first slide rail, the second slide rail and compresses contact;
The lower end of described first support column is fixedly connected with described horizontal base is vertical respectively with the lower end of described second support column, the upper end of described first support column and the upper end edge horizontal direction of described second support column have through hole respectively, and described first support column and described second support column are about described horizontal base Central Symmetry;
Described first turning cylinder is arranged on the through hole of described first support column upper end, and described second turning cylinder is arranged on the through hole of described second support column upper end;
The two ends of described first slide rail are connected with one end of described first turning cylinder and one end of described second turning cylinder respectively; The other end of described first turning cylinder or the other end of described second turning cylinder are used for connecting rocker arm;
Described first rotation jig arm and described second rotates jig arm and is connected with described first slide rail is vertical respectively, when shake be positioned at the described first turning cylinder other end or be positioned at the described rocking arm of the described second turning cylinder other end time, described first slide rail rotates and drives described first to rotate jig arm and described second and rotates jig arm and overturn together with described first turning cylinder or described second turning cylinder;
Described first slide rail and described second slide rail are all equipped with slide block, described second slide rail is arranged on the slide block of described first slide rail, the described contact that compresses is arranged on the slide block of described second slide rail, described in compress the plane orthogonal at contact and described first slide rail and described second slide rail place.
4. Turnable fixture as claimed in claim 3, is characterized in that, described first rotates jig arm and described second rotates the two ends that jig arm is vertically connected on described first slide rail respectively; Or described first rotates jig arm and described second and rotates jig arm and to be connected on described first turning cylinder and described second turning cylinder and vertical with described first slide rail.
5. weld a Turnable fixture for printed circuit board (PCB), comprise horizontal base, support column and turning cylinder; It is characterized in that, also comprise: rotating beam, first rotates jig arm, second and rotates jig arm, the first slide rail, the second slide rail, the 3rd slide rail and compress contact;
Described support column is fixedly connected with described horizontal base is vertical, and the upper end edge horizontal direction of described support column has through hole; Described turning cylinder is arranged on the through hole of described support column upper end, and one end of described turning cylinder is connected with the central vertical of described rotating beam, and the other end of described turning cylinder is connected with a rocking arm; Described first rotates jig arm and described second rotates the two ends that jig arm is vertically mounted on described rotating beam respectively; Described first slide rail, described second slide rail and described 3rd slide rail are all equipped with slide block, one end and described second of described first slide rail rotates that the lower end of jig arm is vertical to be connected, one end and described first of described second slide rail rotates that the lower end of jig arm is vertical to be connected, and the two ends of described 3rd slide rail are connected with the slide block on described first slide rail and the slide block on the second slide rail respectively; The other end of described first slide rail and the other end of described second slide rail is all unsettled does not connect; The described contact that compresses is arranged on the slide block of described 3rd slide rail, described in compress the plane orthogonal at contact and described first slide rail, described second slide rail and described 3rd slide rail place.
6. the Turnable fixture as described in any one of claim 1-5, is characterized in that, described first rotation jig arm is identical with the second rotating clamp arm configuration; First rotates jig arm comprises tubing string shell, chuck, telescopic arm, the stem stem of band gear, jig arm rotational lock bolt and jig arm telescopic locking bolt;
The stiff end of described telescopic arm is connected with the stem stem of described band gear, and the expansion end of described telescopic arm is connected with described chuck; The stem stem of described band gear is arranged in described tubing string shell, and the stem stem of described band gear can rotate around its stem stem axial line; Described tubing string shell has tapped through hole, for coordinating with described jig arm rotational lock bolt; Described telescopic arm has tapped through hole, for coordinating with described jig arm telescopic locking bolt.
7. the Turnable fixture as described in any one of claim 1-5, is characterized in that, described in compress contact and comprise shell, motion bar, motion bar stem stem, compress clamping screw, contact and spring; Described motion bar is positioned at described shell, described motion bar stem stem is positioned at described motion bar, the described clamping screw that compresses contacts with described motion bar when tightening, described in tightening, compress clamping screw to be reached through the object that the stiction compressed between clamping screw and motion bar stops described motion bar movement; Described contact is connected by the upper end of screw thread with described motion bar stem stem; Described motion bar stem stem can move up and down along the inwall of described motion bar; One end of described spring is fixed on the outer wall of described motion bar, and the other end of described spring contacts with the prominence on described motion bar stem stem top; Described movable stem stem is driven to move along the inwall of described motion bar by the stretching motion of described spring.
8. Turnable fixture as claimed in claim 7, it is characterized in that, described contact is conical contact or head is the contact of strip.
9. the Turnable fixture as described in any one of claim 1-5, is characterized in that, the chute of described slide rail is semi-shaped, and chute is built with the rubber strip of strip; Described slide rail is all equipped with slide block, described slide block has screw and is furnished with slide-and-lock bolt, there is movable head described slide block inside; By screwing described slide-and-lock bolt, described slide block internal activity head is contacted with described rubber strip, thus by the stiction between described slide block internal activity head and described rubber strip, described slide block is maintained static.
10. the Turnable fixture as described in any one of claim 1-5, is characterized in that, compresses contact and keeps when flip-flop movement relative position constant with the rotation jig arm fixing to clamp printed circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310082718.5A CN103170703B (en) | 2013-03-15 | 2013-03-15 | Turnable fixture for welding printed circuit board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310082718.5A CN103170703B (en) | 2013-03-15 | 2013-03-15 | Turnable fixture for welding printed circuit board |
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| CN103170703A CN103170703A (en) | 2013-06-26 |
| CN103170703B true CN103170703B (en) | 2015-03-04 |
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| CN201310082718.5A Active CN103170703B (en) | 2013-03-15 | 2013-03-15 | Turnable fixture for welding printed circuit board |
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| CN103170703A (en) | 2013-06-26 |
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