CN109848502A - Rotor cage bar and end ring welding machine table and welding method - Google Patents
Rotor cage bar and end ring welding machine table and welding method Download PDFInfo
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- CN109848502A CN109848502A CN201910177287.8A CN201910177287A CN109848502A CN 109848502 A CN109848502 A CN 109848502A CN 201910177287 A CN201910177287 A CN 201910177287A CN 109848502 A CN109848502 A CN 109848502A
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- welding
- limiting slot
- end ring
- rotor cage
- clamping limb
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Abstract
The present invention relates to the technical fields of motor welding, it is intended to provide a kind of rotor cage bar and end ring welding machine table, its key points of the technical solution are that including bracket, weld cylinder and workbench, workbench is equipped with the first welding hole, second welding hole, first limiting slot and the second limiting slot, first welding hole and the second welding hole are connected to welding cylinder, the side wall of the side wall of first limiting slot and the second limiting slot is equipped with limit component, limit component includes limit hole, spring and gag lever post, the side wall of the side wall of first limiting slot and the second limiting slot is equipped with limit hole, one end of spring connects limit hole, the other end connects gag lever post, when spring is in state, one end away from spring of gag lever post is in outside limit hole；This rotor cage bar and end ring welding machine table its can weld two group rotor cage items every time and end ring, welding efficiency are higher.
Description
Technical field
The present invention relates to the technical field of motor welding, in particular to a kind of rotor cage bar and end ring welding machine table and weldering
Connect method.
Background technique
It is linked together between rotor cage item and end ring by welding manner, form the circuit of electric current and guarantees structure
It is safe and reliable, rotor cage bar is circumferentially uniformly distributed, and end ring opens annular groove in the annulus position of corresponding cage diameter, and cage item is uniformly distributed
In the annular groove of end ring, by bonding machine by rotor cage bar together with end ring welding, in welding process, welding processing platform is
Essential device.
Currently, most of welding processing platform in the market as shown in Figure 1, include fixed frame, both ends open placing tube and
Working panel, one end Connection Bracket of placing tube, the other end connect working panel, and working panel is equipped with the groove of through-hole,
Through-hole is connected to placing tube, the center line of groove and the centerline collineation of through-hole.
In welding, end ring is placed in the groove of welding processing platform, then rotor is sling and is moved to above end ring,
It is in rotor cage bar in the annular groove of end ring, to complete to weld.
Although this welding processing platform can be used in the welding of rotor cage bar and end ring, but since it can only be welded every time
One group rotor cage item and end ring, welding efficiency are lower.
Summary of the invention
The object of the present invention is to provide a kind of rotor cage bars and end ring welding machine table and welding method, can weld every time
It connects two group rotor cage items and end ring, welding efficiency is higher.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of rotor cage bar and end ring welding machine table, including bracket, welding cylinder and workbench, one end connection of the welding cylinder
Bracket, other end connecting working table, the workbench are equipped with the first welding hole, the second welding hole, the first limiting slot and second
Limiting slot, first welding hole and the second welding hole are connected to welding cylinder, the center line and first of first limiting slot
The centerline collineation of limit hole, the center line of second limiting slot and the centerline collineation of the second limit hole, first limit
The side wall of position slot and the side wall of the second limiting slot are equipped with limit component, and the limit component includes limit hole, spring and limit
Bar, the side wall of first limiting slot and the side wall of the second limiting slot are equipped with limit hole, and one end of the spring connects limit
Hole, the other end connect gag lever post, and when the spring is in state, one end away from spring of gag lever post is in outside limit hole.
By using above-mentioned technical proposal, in welded disc turbine rotor cage item and end ring, two end ring are first placed on the first limit
In position slot and the second limiting slot, when installing end ring, pressure first is applied to gib block, spring is made to be become compressing shape from nature
State, gag lever post after end ring is placed on first now and in the second limiting slot, are released towards mobile close to limit hole bottom direction
To the pressure that gag lever post applies, gag lever post is made to contradict end ring side wall, play the purpose of positioning end ring, then rotor cage bar is mounted on
On crane, after first rotor cage bar is brushed solder flux, by crane movable rotor cage item, it is inserted into the end of rotor cage bar
In the annular groove of end ring, by bonding machine by rotor cage bar together with end ring welding, due to that can be placed simultaneously on workbench
Second rotor cage bar can be moved at workbench by two end ring if the solder flux on second rotor cage bar has brushed,
It is in the end of second rotor cage bar in the annular groove of second end ring on workbench, and it is welded, thus
The purpose of two group rotor cage items and end ring of welding every time is realized, welding efficiency is higher.
Further setting: the limit hole side wall is equipped with guide groove, and the gag lever post is equipped with gib block, the guiding
Item is slidably matched with guide groove.
By using above-mentioned technical proposal, in gag lever post moving process, gib block is moved along guide groove, to realize
To the purpose that the moving direction of gag lever post is oriented to, gag lever post is avoided to shake in moving process.
Further setting: the limit component on the side wall of first limiting slot is at least arranged three groups, three groups of limit components
With the center circular array of the first limiting slot, the limit component on the side wall of second limiting slot is at least arranged three groups, and three
Group limit component is with the center circular array of the second limiting slot.
By using above-mentioned technical proposal, limit component is set at least to three groups and circularizes array, in limit component
A possibility that when fixed end ring, the fastening force that end ring can be made to be subject to is more uniform, reduces end ring discontinuity.
Further setting: being additionally provided with clamping device in the welding cylinder, the clamping device includes the first clamping limb, second
Clamping limb, the first interlocking lever, the second interlocking lever, center-pole and the driving device for driving center-pole to rotate, first folder
The inner sidewall of gripping arm and the second clamping limb respectively with welding cylinder is slidably matched, and the driving device setting is described in welding cylinder
The center of the output end connection center-pole of driving device, one end of first interlocking lever and the first clamping limb are hinged, the other end
Hinged center-pole, one end of second interlocking lever and the second clamping limb are hinged, and the other end and center-pole deviate from the first interlocking lever
One end it is hinged.
Rotor cage bar is set to be inserted into the annular of end ring by crane movable rotor cage item by using above-mentioned technical proposal
After in slot, machine shaft can be entered in welding cylinder, start driving device, and driving device drives center-pole to turn in the operating condition
Dynamic, center-pole drives the first interlocking lever and the second interlocking lever mobile during rotation, and the first interlocking lever and the second interlocking lever exist
Drive the first clamping limb and the second clamping limb towards mobile close to machine shaft direction in moving process, until the first clamping limb and
Second clamping limb contradicts machine shaft respectively, to realize the purpose limited to machine shaft, is clamped, avoids welding
Machine shaft shakes in the process, influences the welding quality of rotor cage bar and end ring.
Further setting: the driving device includes motor, the first transmission gear and the second transmission gear, the welding cylinder
It is equipped with bottom plate, the motor is arranged on bottom plate, and first transmission gear is arranged on motor, and the bottom plate, which is equipped with, to be connected
Block is connect, shaft, the center connection of shaft and center-pole are rotatably connected on the link block, and the setting of the second transmission gear is turning
It is engaged on axis and with the first transmission gear.
By using above-mentioned technical proposal, start motor, motor drives the rotation of the first transmission gear, and the first transmission gear exists
The second transmission gear is driven to rotate in rotation process, the second transmission gear drives center-pole to rotate by shaft, to realize drive
The purpose of dynamic center-pole rotation, and then realize the purpose for adjusting the distance between the first clamping limb and second clamping limb.
Further setting: the welding cylinder inner wall is equipped with slider bar, and first clamping limb and the second clamping limb are equipped with
It is equipped with sliding sleeve, the sliding sleeve is slidably matched with slider bar.
By using above-mentioned technical proposal, during the first clamping limb and mobile the second clamping limb, sliding sleeve along
Slider bar is mobile, on the one hand the cooperation of sliding sleeve and slider bar is played the moving direction of the first clamping limb and the second clamping limb
On the other hand guiding role starts support and connection function to the first clamping limb and the second clamping limb, makes the first clamping limb
It is connect with welding cylinder with the second clamping limb.
Further setting: being rotatably connected to idler wheel on the sliding sleeve, the slider bar is equipped with rolling groove, the idler wheel
It rolls and cooperates with rolling groove.
By using above-mentioned technical proposal, in sliding sleeve along in slider bar moving process, idler wheel is rolled along rolling groove,
So that be bonded to each other between sliding sleeve and slider bar face is become rolling friction from sliding friction, thus reduce sliding sleeve with
Frictional force between slider bar keeps the moving process of sliding sleeve more smooth.
It is a further object of the present invention to provide a kind of rotor cage bar and end ring welding method, using above-mentioned rotor cage bar with
End ring welding machine table, it the following steps are included:
S1: brush solder flux, by solder flux brush on rotor cage bar surface:
S2: end ring is placed in the first limiting slot and the second limiting slot of workbench by assembling, and gag lever post is made to contradict end ring side
Wall, rotor cage bar, which is placed, is in the end for rotating cage item in the annular groove of end ring；
S3: clamping starts motor, keeps the first clamping limb and the second clamping limb mobile towards direction close to each other, the first clamping limb
Machine shaft is clamped with the second clamping limb, fixed machine shaft；
S4: welding, using high-frequency induction welding machine, by rotor cage bar together with end ring welding, solder is silver-based brazing solder,
Solder flux is silver-based soldering paste.
It first will be in the first limiting slot and the second limiting slot on workbench in welding by using above-mentioned technical proposal
End ring is placed, after solder flux is brushed, directly the rotor cage bar for brushing solder flux can be placed on the table, make rotor cage bar
End be inserted into the annular groove of an end ring, continue to next rotor cage bar brush solder flux, the weldering on next rotor cage bar
After agent brushes, then on the table by rotor cage bar placement, it is inserted into the end of rotor cage bar in the annular groove of another end ring,
To rotor cage bar and end ring welding, to realize the purpose of two group rotor cage items and end ring of welding every time, welding efficiency is higher,
Continue simultaneously to rotor cage bar brush solder flux to be welded, after wherein a group welding is good, by the rotor cage bar being welded and end ring
It removes, to carry out next group welding.
In conclusion the invention has the following advantages:
1, two end ring can be placed on workbench simultaneously, even a rotor cage bar for brushing solder flux can be moved to workbench
Place, is in the end of rotor cage bar in the annular groove of workbench top ring, and weld to it, to realize each weldering
The purpose of two group rotor cage items and end ring is connect, welding efficiency is higher；
2, limit component is set at least to three groups and circularizes array, in the fixed end ring of limit component, can make end ring by
A possibility that fastening force arrived is more uniform, reduces end ring discontinuity；
3, driving device drives center-pole rotation, and center-pole drives the first interlocking lever and the second interlocking lever mobile, the first interlocking lever
It drives the first clamping limb and the second clamping limb towards close to the movement of machine shaft direction with the second interlocking lever, machine shaft is carried out
Limit, is clamped, and is avoided machine shaft in welding process from shaking, is influenced the welding quality of rotor cage bar and end ring.
Detailed description of the invention
Fig. 1 is in embodiment 1 for embodying structural schematic diagram of the invention；
Fig. 2 is in Fig. 1 for embodying the portion the A schematic enlarged-scale view of limit component；
Fig. 3 is in embodiment 1 for embodying the structural schematic diagram of clamping device；
Fig. 4 is in embodiment 1 for embodying the structural schematic diagram of positional relationship between sliding sleeve and slider bar；
Fig. 5 is in Fig. 4 for embodying the portion the B schematic enlarged-scale view of positional relationship between idler wheel and rolling groove；
Fig. 6 is in Fig. 3 for embodying the portion the C schematic enlarged-scale view of driving device.
In figure, 1, bracket；2, cylinder is welded；3, workbench；4, clamping device；41, the first clamping limb；42, the second clamping limb；
43, the second interlocking lever；44, center-pole；45, driving device；46, the first interlocking lever；451, motor；452, the first transmission gear；
453, the second transmission gear；5, welded plate；6, the first welding hole；7, the second welding hole；8, the first limiting slot；9, the second limit
Slot；10, limit component；11, limit hole；12, spring；13, gag lever post；14, guide groove；15, gib block；16, slider bar；17,
Sliding sleeve；18, idler wheel；19, rolling groove；20, bottom plate；21, link block；22, shaft.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment 1: a kind of rotor cage bar and end ring welding machine table, as shown in Figure 1, including bracket 1, welding cylinder 2, work
Platform 3 and clamping device 4.
As depicted in figs. 1 and 2, one end connecting bracket 1 of cylinder 2, other end connecting working table 3 are welded, welding cylinder 2 is equipped with
Welded plate 5, welded plate 5 and bracket 1 weld, and workbench 3 is equipped with the first welding hole 6, the second welding hole 7,8 and of the first limiting slot
Second limiting slot 9, the first welding hole 6 and the second welding hole 7 are connected to welding cylinder 2, the center line and first of the first limiting slot 8
The centerline collineation of limit hole 11, the centerline collineation of the center line of the second limiting slot 9 and the second limit hole 11, the first limiting slot
The side wall of 8 side wall and the second limiting slot 9 is equipped with three groups of limit components 10, and the limit component 10 on the first limiting slot 8 is with
The center circular array of one limiting slot 8, the limit component 10 on the second limiting slot 9 with the center of the second limiting slot 9 in a ring
Array, limit component 10 include limit hole 11, spring 12 and gag lever post 13, the side wall of the first limiting slot 8 and the second limiting slot 9
Side wall is equipped with limit hole 11, and one end of spring 12 connects 11 bottom of limit hole, and the other end connects gag lever post 13, and spring 12 is in
When state, one end away from spring 12 of gag lever post 13 is in outside limit hole 11, and one end of 13 connecting spring 12 of gag lever post is in
In limit hole 11,11 side wall of limit hole is equipped with guide groove 14, and gag lever post 13 is equipped with gib block 15, gib block 15 and guide groove
14 are slidably matched, so that the moving direction to gag lever post 13 is oriented to.
As shown in figures 1 and 3, for the setting of clamping device 4 in welding cylinder 2, clamping device 4 is set as two groups, respectively corresponds
First limiting slot 8 and the second limiting slot 9, clamping device 4 include the first clamping limb 41, the second clamping limb 42, the first interlocking lever 46,
Second interlocking lever 43, center-pole 44 and driving device 45.
As shown in Figure 3 and Figure 4, the first clamping limb 41 and the second clamping limb 42 are matched with the inner sidewall sliding of welding cylinder 2 respectively
It closes, welding 2 inner wall of cylinder is equipped with slider bar 16, and the first clamping limb 41 and the second clamping limb 42, which are equipped with, is equipped with sliding sleeve 17, sliding
Dynamic set 17 is slidably matched with slider bar 16, as shown in figure 5, sliding sleeve 17 is rotatably connected to idler wheel 18, slider bar by connecting shaft
16 are equipped with rolling groove 19, and idler wheel 18 and rolling groove 19, which roll, to be cooperated, to reduce rubbing between sliding sleeve 17 and slider bar 16
Wipe power.
As shown in Figure 3 and Figure 6, there are two driving devices 45 for every group of tool of clamping device 4, and the setting of driving device 45 is in welding cylinder
In 2, driving device 45 includes motor 451, the first transmission gear 452 and the second transmission gear 453, and welding 2 bottom of cylinder is equipped with bottom
Plate 20, motor 451 are arranged on the base plate 20, and the first transmission gear 452 is arranged on motor 451, and bottom plate 20 is equipped with link block
21, shaft 22 is rotatably connected on link block 21, the second transmission gear 453 is arranged in shaft 22, the first transmission gear 452 with
The engagement of second transmission gear 453.
As shown in fig. 6, the quantity of the first interlocking lever 46, the second interlocking lever 43 and center-pole 44 is disposed as two, center
The center of bar 44 is connect with shaft 22, and the both ends of the first clamping limb 41 pass through pin respectively and the first interlocking lever 46 is hinged, and first
Interlocking lever 46 passes through one end of pin-hinges center-pole 44, the both ends point of the second clamping limb 42 away from one end of the first clamping limb 41
Not Tong Guo pin and the second interlocking lever 43 it is hinged, the second interlocking lever 43 deviates from away from one end of the second clamping limb 42 with center-pole 44
One end of first interlocking lever 46 passes through pin-hinges.
Implementation process: in welded disc turbine rotor cage item and end ring, pressure first is applied to gib block 15, makes spring 12 by natural shape
State becomes compressive state, and gag lever post 13 is placed on first now and the towards mobile close to 11 bottom direction of limit hole, by end ring
After in two limiting slots 9, the pressure applied to gag lever post 13 is released, gag lever post 13 is made to contradict end ring side wall, plays positioning end ring
Purpose, then rotor cage bar is mounted on crane, after first rotor cage bar is brushed solder flux, continue to second rotor cage bar
Brush solder flux makes the end of rotor cage bar be inserted into the ring of 8 top ring of the first limiting slot by first movable rotor cage item of crane
In shape slot, start motor 451, motor 451 drives the rotation of the first transmission gear 452, and the first transmission gear 452 is during rotation
The second transmission gear 453 is driven to rotate, the second transmission gear 453 drives center-pole 44 to rotate by shaft 22, and center-pole 44 exists
Drive the first interlocking lever 46 and the second interlocking lever 43 mobile in rotation process, the first interlocking lever 46 and the second interlocking lever 43 are in movement
Drive the first clamping limb 41 and the second clamping limb 42 mobile towards close 451 shaft of motor, 22 direction in the process, until the first folder
Gripping arm 41 and the second clamping limb 42 contradict 451 shaft 22 of motor respectively, limit to 451 shaft 22 of motor, then pass through welding
Machine is by rotor cage bar together with end ring welding.
It, can if the solder flux on second rotor cage bar has brushed since two end ring can be placed on workbench 3 simultaneously
Second rotor cage bar to be moved at workbench 3, make the second limit that the end of second rotor cage bar is on workbench 3
In the annular groove of position 9 top ring of slot, starts clamping device 4 corresponding with the second limiting slot 9,451 shaft 22 of motor is pressed from both sides
It holds, rotor cage bar and end ring is welded, so that the purpose of two group rotor cage items and end ring of welding every time is realized, welding effect
Rate is higher.
Embodiment 2: a kind of rotor cage bar and end ring welding method, it the following steps are included:
S1: brush solder flux, by solder flux brush on rotor cage bar surface:
S2: end ring is placed in the first limiting slot 8 and the second limiting slot 9 of workbench 3 by assembling, and contradicts gag lever post 13
Rotor cage bar is placed on workbench 3 by end ring side wall, is in the end for rotating cage item in the annular groove of end ring；
S3: clamping starts motor 451, keeps the first clamping limb 41 and the second clamping limb 42 mobile towards direction close to each other, and first
Clamping limb 41 and the second clamping limb 42 clamp 451 shaft 22 of motor, fixed 451 shaft 22 of motor；
S4: welding, using high-frequency induction welding machine, by rotor cage bar together with end ring welding, solder is silver-based brazing solder,
Solder flux is silver-based soldering paste.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (8)
1. a kind of rotor cage bar and end ring welding machine table, including bracket (1), welding cylinder (2) and workbench (3), the welding
One end connecting bracket (1) of cylinder (2), other end connecting working table (3), it is characterised in that: the workbench (3) is equipped with first
Welding hole (6), the second welding hole (7), the first limiting slot (8) and the second limiting slot (9), first welding hole (6) and second
Welding hole (7) is connected to welding cylinder (2), the center line of first limiting slot (8) and the center line of the first limit hole (11)
Collinearly, the centerline collineation of the center line and the second limit hole (11) of second limiting slot (9), first limiting slot (8)
Side wall and the side wall of the second limiting slot (9) be equipped with limit component (10), the limit component (10) include limit hole (11),
Spring (12) and gag lever post (13), the side wall of first limiting slot (8) and the side wall of the second limiting slot (9) are equipped with limit hole
(11), one end of the spring (12) connects limit hole (11), and the other end connects gag lever post (13), and the spring (12) is in shape
When state, one end away from spring (12) of gag lever post (13) is in limit hole (11) outside.
2. rotor cage bar according to claim 1 and end ring welding machine table, it is characterised in that: limit hole (11) side
Wall is equipped with guide groove (14), and the gag lever post (13) is equipped with gib block (15), the gib block (15) and guide groove (14)
It is slidably matched.
3. rotor cage bar according to claim 1 and end ring welding machine table, it is characterised in that: first limiting slot
(8) limit component (10) on side wall is at least arranged three groups, and three groups of limit components (10) are in the center of the first limiting slot (8)
Annular array, the limit component (10) on the side wall of second limiting slot (9) are at least arranged three groups, three groups of limit components (10)
With the center circular array of the second limiting slot (9).
4. rotor cage bar according to claim 1 and end ring welding machine table, it is characterised in that: in the welding cylinder (2)
It is additionally provided with clamping device (4), the clamping device (4) includes the first clamping limb (41), the second clamping limb (42), the first interlocking lever
(46), the second interlocking lever (43), center-pole (44) and the driving device (45) for driving center-pole (44) to rotate, described first
The inner sidewall of clamping limb (41) and the second clamping limb (42) respectively with welding cylinder (2) is slidably matched, and the driving device (45) sets
It sets in welding cylinder (2), the center of output end connection center-pole (44) of the driving device (45), first interlocking lever
(46) one end and the first clamping limb (41) hingedly, the hinged center-pole of the other end (44), one end of second interlocking lever (43)
Hingedly with the second clamping limb (42), the other end and center-pole (44) are hinged away from the one end of the first interlocking lever (46).
5. rotor cage bar according to claim 4 and end ring welding machine table, it is characterised in that: the driving device (45)
Including motor (451), the first transmission gear (452) and the second transmission gear (453), the welding cylinder (2) is equipped with bottom plate
(20), the motor (451) is arranged on bottom plate (20), and first transmission gear (452) is arranged on motor (451), institute
It states bottom plate (20) and is equipped with link block (21), be rotatably connected to shaft (22) on the link block (21), shaft (22) and center
The center of bar (44) connects, and the second transmission gear (453) is arranged on shaft (22) and nibbles with the first transmission gear (452)
It closes.
6. rotor cage bar according to claim 5 and end ring welding machine table, it is characterised in that: in the welding cylinder (2)
Wall is equipped with slider bar (16), and first clamping limb (41) and the second clamping limb (42) are equipped with and are equipped with sliding sleeve (17), institute
Sliding sleeve (17) is stated to be slidably matched with slider bar (16).
7. rotor cage bar according to claim 6 and end ring welding machine table, it is characterised in that: on the sliding sleeve (17)
It is rotatably connected to idler wheel (18), the slider bar (16) is equipped with rolling groove (19), and the idler wheel (18) and rolling groove (19) are rolled
Dynamic cooperation.
8. a kind of rotor cage of rotor cage bar and end ring welding machine table using as described in any one of claim 1~7
Item and end ring welding method, it is characterised in that: it the following steps are included:
S1: brush solder flux, by solder flux brush on rotor cage bar surface:
S2: end ring is placed in the first limiting slot (8) and the second limiting slot (9) of workbench (3), and makes gag lever post by assembling
(13) end ring side wall is contradicted, rotor cage bar is placed on workbench (3), the end for rotating cage item is made to be in the annular groove of end ring
It is interior；
S3: clamping starts motor (451), moves the first clamping limb (41) and the second clamping limb (42) towards direction close to each other
Dynamic, the first clamping limb (41) and the second clamping limb (42) clamp motor (451) shaft (22), fixed motor (451) shaft
(22)；
S4: welding, using high-frequency induction welding machine, by rotor cage bar together with end ring welding, solder is silver-based brazing solder,
Solder flux is silver-based soldering paste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910177287.8A CN109848502A (en) | 2019-03-08 | 2019-03-08 | Rotor cage bar and end ring welding machine table and welding method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910177287.8A CN109848502A (en) | 2019-03-08 | 2019-03-08 | Rotor cage bar and end ring welding machine table and welding method |
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| CN109848502A true CN109848502A (en) | 2019-06-07 |
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| CN205021059U (en) * | 2015-08-19 | 2016-02-10 | 重庆永宏石油化工设备有限公司 | Case welding frock with press from both sides tight seat |
| CN206898657U (en) * | 2017-06-23 | 2018-01-19 | 芜湖美奥机械科技有限公司 | A kind of compressor of air conditioner upper shell blast pipe welding tooling |
| CN107953062A (en) * | 2017-12-26 | 2018-04-24 | 章雪霞 | A kind of fixture of the rotating welding pipe fitting of Portable detachable |
| CN207982514U (en) * | 2018-01-18 | 2018-10-19 | 佛山市南海区广工大数控装备协同创新研究院 | A kind of two station circular arc profiling argon arc welding machines |
| CN108161801A (en) * | 2018-03-20 | 2018-06-15 | 安徽工程大学 | A kind of workpiece holds clamping device tightly |
| CN208246056U (en) * | 2018-05-04 | 2018-12-18 | 苏州迅镭激光科技有限公司 | A kind of automatic assembly welding mechanism of impeller |
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Application publication date: 20190607 |