CN110465556A - A kind of three draggers traction header structure - Google Patents
A kind of three draggers traction header structure Download PDFInfo
- Publication number
- CN110465556A CN110465556A CN201910710981.1A CN201910710981A CN110465556A CN 110465556 A CN110465556 A CN 110465556A CN 201910710981 A CN201910710981 A CN 201910710981A CN 110465556 A CN110465556 A CN 110465556A
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- CN
- China
- Prior art keywords
- draggers
- gear
- output end
- header structure
- support plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 210000000078 claw Anatomy 0.000 claims abstract description 51
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 14
- 230000001360 synchronised effect Effects 0.000 claims description 20
- 238000003825 pressing Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000009987 spinning Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000003028 elevating effect Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Agricultural Machines (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
The present invention relates to a kind of three draggers to draw header structure, it includes vehicle frame (1), a support shaft (2) are fixedly installed on the vehicle frame (1), intermediate support plate (4) and gear (5) are set on the support shaft (2), organic frame (6) are set on the intermediate support plate (4), worm-gear speed reducer (7) are provided on the rack (6), claw component (8) are provided on the outside of the rack (6), the outer output end (7.1) is connected with claw component (8), pull-fork assembly (10) are provided on the interior output end (7.2), rack gear (11) are provided on the intermediate support plate (4), snap-gauge (12) are provided at the top of the rack gear (11).A kind of three draggers of the invention draw header structure, can be realized the spinning movement of entire drawing head by the power of feeding clip mechanism, to concede space when working alternatively position for another drawing head, simplify overall structure, reduce manufacturing cost.
Description
Technical field
The present invention relates to a kind of three draggers to draw header structure, belongs to aluminum profile production equipment technology.
Background technique
In aluminium alloy extrusions extrusion process of production, an aluminium bar has often been squeezed, it is necessary to interrupt to profile, it is therefore an objective to be
Facilitate the progress of the rear process such as transmission and aligning.In addition, traction auxiliary is very important in extrusion process, it is especially right
It is squeezed in multiple-hole die popular at present and some profiles for being not easy to squeeze out, good effective traction auxiliary can both protect
The discharging for demonstrate,proving profile, can also improve production efficiency and yield rate.
Traditional dragger is mostly single head traction, and single head dragger puts down profile when being drawn to certain position, returns again to and leads
Cause the place begun, repeated work, under this list mode of traction efficiency is very low.Also there is double end dragger in existing technology
, working forms are as follows: previous traction device comes profile traction, and in a certain place, the profile that traction comes is handed over to another
One traction device continues to draw, and previous traction device returns, and completes the relay of profile.Although such method can be uninterrupted
Traction, but the collision of dragger can occur during relay for its dragger, and dragger pauses when profile joins, and leads
It causes to bend on profile axial direction, while Surface of profile be easy to cause scratch, influences section quality.
Three draggers currently on the market generally include rack, and upper rail and lower railway are provided in rack, upper rail
With upper drawing head and lower drawing head are respectively arranged on lower railway, upper drawing head and lower drawing head can alternately carry out traction work
Industry guarantees to work continuously so that profile production is uninterrupted, improves production efficiency, has well solved above-mentioned technical problem.But
Current existing three draggers are in order to enable upper drawing head and lower drawing head smoothly to work alternatively position, it usually needs are leading
Transverse-moving mechanism or elevating mechanism are added on leader, and another traction of one of drawing head is made by transverse-moving mechanism or elevating mechanism
Head concedes space, to smoothly complete the alternating of operating position, resulting in sleeve mechanism in this way, structure is complicated, considerably increases life
Produce manufacturing cost.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of three dragger drawing head knots for the above-mentioned prior art
Structure, it is structurally reasonable, it is ingenious in design, it can be realized the spinning movement of entire drawing head by the power of feeding clip mechanism, thus
Space is conceded for another drawing head when working alternatively position, existing transverse-moving mechanism or elevating mechanism is eliminated, simplifies entirety
Structure reduces manufacturing cost.
The present invention solves the above problems used technical solution are as follows: a kind of three draggers draw header structures, it includes
Vehicle frame is fixedly installed a support shaft on the vehicle frame, intermediate support plate and gear, the gear is set in the support shaft
Above intermediate support plate, the intermediate support plate and support shaft are rotatablely connected, and the gear is fixed to the support shaft connection；Institute
It states and organic frame is set on intermediate support plate, worm-gear speed reducer, the worm-gear speed reducer packet are provided in the rack
Outer output end and interior output end are included, the shell outside is provided with claw component, leads between the outer output end and claw component
It crosses link mechanism to be connected, pull-fork assembly is provided on the interior output end, one is provided on the intermediate support plate to control
The rack gear of translation, the rack gear are provided with snap-gauge, the rack and pinion phase at the top of the rack gear between rack and gear
Cooperation, the snap-gauge are matched with pull-fork assembly.
Preferably, it is provided with sliding block below the rack gear, the sliding block is fixedly installed on intermediate support plate, the rack gear
Bottom is provided with sliding rail, and the sliding rail is matched with sliding block.
Preferably, matched pressing plate is provided with below the claw component.
Preferably, the claw component includes claw axis, and the claw axis is fixedly installed in rack, on the claw axis
Multiple claws are set with, the claw can be rotated around claw axis.
Preferably, trailing arm is provided at left and right sides of multiple claws, the trailing arm is fixedly connected with claw axis, left and right two
Pressure pin is provided between trailing arm, the pressure pin support is in multiple claw below an upper sections.
Preferably, the pull-fork assembly includes shift fork arm, shift fork arm one end be set on interior output end and with it is interior defeated
Outlet is fixedly connected, and the shift fork arm other end is provided with shift fork axle, offers card slot, the shift fork downwards at the top of the snap-gauge
Axis and card slot cooperate.
Preferably, the shift fork arm is provided with arc fixture block at the position close to interior output end, the arc fixture block
Center line is overlapped with interior output end center line, and the card slot side is provided with arc bayonet, when shift fork axle and card slot disengaging, this
When arc fixture block matched with arc bayonet.
Preferably, it is provided with a support rim in the middle part of the support shaft, the support shaft lower section is plugged in vehicle frame, described
Support rim is held on vehicle frame, is connected between the vehicle frame and support rim by bolt, the support rim and centre
Bearing is provided between support plate and between intermediate support plate and gear.
Preferably, position-limit mechanism, the position-limit mechanism and intermediate support plate phase are provided at left and right sides of the support shaft
Cooperation.
Preferably, the bottom of frame is provided with the two groups of idler wheels in left and right；The bottom of frame is provided with synchronous trough of belt, described
Synchronous belt slot position is provided with synchronous belt, the synchronous belt and bottom of frame between the two groups of idler wheels in left and right in the synchronous trough of belt
It is fixedly connected, the synchronous belt is driven by traction electric machine.
Compared with the prior art, the advantages of the present invention are as follows:
A kind of three draggers of the invention draw header structure, structurally reasonable, ingenious in design, pass through the power of feeding clip mechanism
It can be realized the spinning movement of entire drawing head, to concede space when working alternatively position for another drawing head, eliminate
Existing transverse-moving mechanism or elevating mechanism, simplify overall structure, reduce manufacturing cost.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram that a kind of three draggers of the present invention draw header structure.
Fig. 2 is the stereoscopic schematic diagram that a kind of three draggers of the present invention draw another visual angle of header structure.
Fig. 3 is the main view that a kind of three draggers of the present invention draw header structure.
Fig. 4 is the side view of Fig. 3.
Fig. 5 is the rearview of Fig. 3.
Wherein:
Vehicle frame 1
Support shaft 2
Support rim 3
Intermediate support plate 4
Gear 5
Rack 6
Worm-gear speed reducer 7
Outer output end 7.1
Interior output end 7.2
Claw component 8
Claw axis 8.1
Claw 8.2
Trailing arm 8.3
Pressure pin 8.4
Link mechanism 9
First connecting rod 9.1
Second connecting rod 9.2
Third connecting rod 9.3
Pull-fork assembly 10
Shift fork arm 10.1
Shift fork axle 10.2
Arc fixture block 10.3
Rack gear 11
Snap-gauge 12
Card slot 12.1
Arc bayonet 12.2
Sliding block 13
Sliding rail 14
Pressing plate 15
Bearing 16
Position-limit mechanism 17
Idler wheel 18
Synchronous trough of belt 19
Synchronous belt 20.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1~fig. 5, three draggers of one of the present embodiment draw header structure, it includes vehicle frame 1, described
The outer side position of vehicle frame 1 is provided with a support shaft 2, is provided with a support rim 3 in the middle part of the support shaft 2, under the support shaft 2
Section is plugged in vehicle frame 1, and the support rim 3 is held on vehicle frame 1, and 2 upper section of support shaft is set with 4 He of intermediate support plate
Gear 5, the gear 5 are located at 4 top of intermediate support plate, and the intermediate support plate 4 is rotatablely connected with support shaft 2, the gear 5
It is fixedly connected with support shaft 2；Organic frame 6 is set on the intermediate support plate 4, and the rack 6 is located at 5 outside of gear, the machine
Worm-gear speed reducer 7 is provided on frame 6, the worm-gear speed reducer 7 includes outer output end 7.1 and interior output end 7.2, institute
It states and is provided with claw component 8 on the outside of rack 6, be connected between the outer output end 7.1 and claw component 8 by link mechanism 9,
Pull-fork assembly 10 is provided on the interior output end 7.2, the rack gear of translation can be controlled by being provided with one on the intermediate support plate 4
11, the rack gear 11 is provided with snap-gauge 12, the rack gear 11 and gear between rack 6 and gear 5 at the top of the rack gear 11
5 match, and the snap-gauge 12 is matched with pull-fork assembly 10；
Sliding block 13 is provided with below the rack gear 11, the sliding block 13 is fixedly installed on intermediate support plate 4, the rack gear
11 bottoms are provided with sliding rail 14, and the sliding rail 14 is matched with sliding block 13；
Matched pressing plate 15 is provided with below the claw component 8, the pressing plate 15 is fixedly connected on intermediate branch
4 bottom of fagging；
The claw component 8 includes claw axis 8.1, and the claw axis 8.1 is fixedly installed in rack 6, the claw axis
Multiple claws 8.2 are set on 8.1, the claw 8.2 can be rotated around claw axis 8.1；
The left and right sides of multiple claws 8.2 is provided with trailing arm 8.3, and the trailing arm 8.3 is fixedly connected with claw axis 8.1, left
It is provided with pressure pin 8.4 between right two trailing arms 8.3,8.4 support of pressure pin is in multiple 8.2 below an upper sections of claw；
The link mechanism 9 includes sequentially connected first connecting rod 9.1, second connecting rod 9.2 and third connecting rod 9.3；
The pull-fork assembly 10 includes shift fork arm 10.1, and described 10.1 one end of shift fork arm is set on interior output end 7.2 simultaneously
It is fixedly connected with interior output end 7.2,10.1 other end of shift fork arm is provided with shift fork axle 10.2, and 12 top of snap-gauge is downwards
Card slot 12.1 is offered, the shift fork axle 10.2 is matched with card slot 12.1；
The shift fork arm 10.1 is provided with arc fixture block 10.3, the arc card at the position close to interior output end 7.2
The center line of block 10.3 is overlapped with interior 7.2 center line of output end, and 12.1 side of card slot is provided with arc bayonet 12.2, when dial
When fork shaft 10.2 and card slot 12.1 are detached from, arc fixture block 10.3 is matched with arc bayonet 12.2 at this time；
4 inner sleeve of intermediate support plate is loaded in support shaft 2；
Bearing is provided between the support rim 3 and intermediate support plate 4 and between intermediate support plate 4 and gear 5
16；
Position-limit mechanism 17 is provided at left and right sides of the support shaft 2, the position-limit mechanism 17 matches with intermediate support plate 4
It closes；
1 bottom of vehicle frame is provided with the two groups of idler wheels 18 in left and right；
1 bottom of vehicle frame is provided with synchronous trough of belt 19, and the synchronous trough of belt 19 is located between the two groups of idler wheels 18 in left and right, institute
It states and is provided with synchronous belt 20 in synchronous trough of belt 19, the synchronous belt 20 is fixedly connected with 1 bottom of vehicle frame, and the synchronous belt 20 passes through
Traction electric machine is driven.
Working principle:
Support shaft is set on vehicle frame, and intermediate support plate is set in support shaft and can rotate around support shaft, intermediate support plate
Upper setting organic frame, shell outside are provided with claw component, are provided with pressing plate below claw component, claw component is formed with pressing plate
Clamp port is drawn, worm-gear speed reducer is set in rack, worm-gear speed reducer includes interior output end and outer output end, outer defeated
It is connected between outlet and claw component by link mechanism, claw component can be made under the driving of worm-gear speed reducer
It is lifted up or presses downwards；Output end is provided with pull-fork assembly, interior output end shift fork component in worm-gear speed reducer
Rotation, when the shift fork axle of pull-fork assembly is caught in the snap-gauge on rack gear, band carry-over bar is moved left and right, due on rack gear and support shaft
Gear be meshed, therefore entire intermediate support plate is driven rotate around support shaft, passes through the rotating forward reversion of worm-gear speed reducer
Intermediate support plate, which may be implemented, drives entire traction mechanism to produce or inwardly retract outward, to be upper drawing head and lower drawing head
Alternate position concedes space.When intermediate support plate drives entire traction mechanism to be produced outward to distracted position, shift fork group at this time
The shift fork axle of part is detached from the card slot on snap-gauge, intermediate support plate when the claw component of worm-gear speed reducer driving at this time continues to push
Do not continue to rotate, and the arc fixture block of pull-fork assembly is caught in the arc bayonet on snap-gauge at this time, due to arc fixture block with
Under the restriction effect that arc bayonet matches, claw, which continues intermediate support plate in down stroke, at this time to be moved forward and backward.
In addition to the implementation, all to use equivalent transformation or equivalent replacement the invention also includes there is an other embodiments
The technical solution that mode is formed should all be fallen within the scope of the hereto appended claims.
Claims (10)
1. a kind of three draggers draw header structure, it is characterised in that: it includes vehicle frame (1), is fixedly installed on the vehicle frame (1)
Have a support shaft (2), be set with intermediate support plate (4) and gear (5) on the support shaft (2), the intermediate support plate (4) with
Support shaft (2) rotation connection, the gear (5) are fixedly connected with support shaft (2)；It is arranged on the intermediate support plate (4) organic
Frame (6) is provided with worm-gear speed reducer (7) on the rack (6), and the worm-gear speed reducer (7) includes outer output end
(7.1) it is provided with claw component (8) with interior output end (7.2), rack (6) outside, the outer output end (7.1) and claw
Component (8) is connected, and is provided with pull-fork assembly (10) on the interior output end (7.2), is provided on the intermediate support plate (4)
One can control the rack gear (11) of translation, be provided with snap-gauge (12) at the top of the rack gear (11), the rack gear (11) and gear (5) phase
Cooperation, the snap-gauge (12) match with pull-fork assembly (10).
2. a kind of three draggers according to claim 1 draw header structure, it is characterised in that: below the rack gear (11)
It is provided with sliding block (13), the sliding block (13) is fixedly installed on intermediate support plate (4), and rack gear (11) bottom is provided with cunning
Rail (14), the sliding rail (14) match with sliding block (13).
3. a kind of three draggers according to claim 1 draw header structure, it is characterised in that: the claw component (8)
Lower section is provided with matched pressing plate (15).
4. a kind of three draggers according to claim 1 draw header structure, it is characterised in that: the claw component (8)
Including claw axis (8.1), the claw axis (8.1) is fixedly installed on rack (6), is set on the claw axis (8.1) more
A claw (8.2), the claw (8.2) can rotate around claw axis (8.1).
5. a kind of three draggers according to claim 4 draw header structure, it is characterised in that: multiple claws (8.2)
The left and right sides is provided with trailing arm (8.3), and the trailing arm (8.3) is fixedly connected with claw axis (8.1), two trailing arms (8.3) in left and right
Between be provided with pressure pin (8.4), pressure pin (8.4) support is in multiple claws (8.2) below an upper section.
6. a kind of three draggers according to claim 1 draw header structure, it is characterised in that: the pull-fork assembly (10)
Including shift fork arm (10.1), described shift fork arm (10.1) one end is set on interior output end (7.2) and consolidates with interior output end (7.2)
Fixed connection, shift fork arm (10.1) other end are provided with shift fork axle (10.2), offer card at the top of the snap-gauge (12) downwards
Slot (12.1), the shift fork axle (10.2) and card slot (12.1) cooperate.
7. a kind of three draggers according to claim 6 draw header structure, it is characterised in that: the shift fork arm (10.1)
Close to interior output end (7.2) position at be provided with arc fixture block (10.3), the center line of the arc fixture block (10.3) with
Interior output end (7.2) center line is overlapped, and card slot (12.1) side is provided with arc bayonet (12.2), when shift fork axle (10.2)
When being detached from card slot (12.1), arc fixture block (10.3) is matched with arc bayonet (12.2) at this time.
8. a kind of three draggers according to claim 1 draw header structure, it is characterised in that: in the support shaft (2)
Portion is provided with a support rim (3), and support shaft (2) lower section is plugged in vehicle frame (1), and the support rim (3) is held on
On vehicle frame (1), it is connected between the vehicle frame (1) and support rim (3) by bolt, the support rim (3) and intermediate branch
It is provided with bearing (16) between fagging (4) and between intermediate support plate (4) and gear (5).
9. a kind of three draggers according to claim 1 draw header structure, it is characterised in that: the support shaft (2) is left
Right two sides are provided with position-limit mechanism (17), and the position-limit mechanism (17) matches with intermediate support plate (4).
10. a kind of three draggers according to claim 1 draw header structure, it is characterised in that: vehicle frame (1) bottom
It is provided with the two groups of idler wheels (18) in left and right；Vehicle frame (1) bottom is provided with synchronous trough of belt (19), and the synchronous trough of belt (19) is located at
Between the two groups of idler wheels (18) in left and right, it is provided with synchronous belt (20) in the synchronous trough of belt (19), the synchronous belt (20) and vehicle frame
(1) bottom is fixedly connected, and the synchronous belt (20) is driven by traction electric machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910710981.1A CN110465556B (en) | 2019-08-02 | 2019-08-02 | Traction head structure of three-head traction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910710981.1A CN110465556B (en) | 2019-08-02 | 2019-08-02 | Traction head structure of three-head traction machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110465556A true CN110465556A (en) | 2019-11-19 |
| CN110465556B CN110465556B (en) | 2024-05-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910710981.1A Active CN110465556B (en) | 2019-08-02 | 2019-08-02 | Traction head structure of three-head traction machine |
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| Country | Link |
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| CN (1) | CN110465556B (en) |
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| GB1506315A (en) * | 1974-07-25 | 1978-04-05 | Plast Elastverarbeitungsmasch | Haul off device for profiles of variable crosssection more particularly for extruded plastics sections |
| CN202725668U (en) * | 2012-07-18 | 2013-02-13 | 关灿彬 | Traction machine |
| CN103056188A (en) * | 2013-01-04 | 2013-04-24 | 林志萍 | Aluminium profile circulating band saw full-automatic traction apparatus |
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| JP2015020180A (en) * | 2013-07-17 | 2015-02-02 | Ykk株式会社 | Traction device for shape material |
| CN205587451U (en) * | 2016-05-16 | 2016-09-21 | 佛山市南海铜正机械设备有限公司 | Aluminium alloy extrusion draw gear |
| CN205763027U (en) * | 2016-05-31 | 2016-12-07 | 佛山市澳科自动化工程有限公司 | A kind of novel three traction machines |
| CN108127002A (en) * | 2017-12-08 | 2018-06-08 | 佛山市澳科自动化工程有限公司 | A kind of dragger |
| CN108144981A (en) * | 2017-12-08 | 2018-06-12 | 佛山市澳科自动化工程有限公司 | A kind of clamping device |
| CN208662178U (en) * | 2018-08-20 | 2019-03-29 | 佛山市三水区诺尔贝机器人研究院有限公司 | A kind of grasping mechanism for profile traction |
| CN211071314U (en) * | 2019-08-02 | 2020-07-24 | 江苏江顺精密机电设备有限公司 | Traction head structure of three-head tractor |
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2019
- 2019-08-02 CN CN201910710981.1A patent/CN110465556B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1506315A (en) * | 1974-07-25 | 1978-04-05 | Plast Elastverarbeitungsmasch | Haul off device for profiles of variable crosssection more particularly for extruded plastics sections |
| CN202725668U (en) * | 2012-07-18 | 2013-02-13 | 关灿彬 | Traction machine |
| CN103056188A (en) * | 2013-01-04 | 2013-04-24 | 林志萍 | Aluminium profile circulating band saw full-automatic traction apparatus |
| JP2015020180A (en) * | 2013-07-17 | 2015-02-02 | Ykk株式会社 | Traction device for shape material |
| CN203448428U (en) * | 2013-07-25 | 2014-02-26 | 佛山市阿努迈机械设备有限公司 | Simple traction head device |
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| CN205587451U (en) * | 2016-05-16 | 2016-09-21 | 佛山市南海铜正机械设备有限公司 | Aluminium alloy extrusion draw gear |
| CN205763027U (en) * | 2016-05-31 | 2016-12-07 | 佛山市澳科自动化工程有限公司 | A kind of novel three traction machines |
| CN108127002A (en) * | 2017-12-08 | 2018-06-08 | 佛山市澳科自动化工程有限公司 | A kind of dragger |
| CN108144981A (en) * | 2017-12-08 | 2018-06-12 | 佛山市澳科自动化工程有限公司 | A kind of clamping device |
| CN208662178U (en) * | 2018-08-20 | 2019-03-29 | 佛山市三水区诺尔贝机器人研究院有限公司 | A kind of grasping mechanism for profile traction |
| CN211071314U (en) * | 2019-08-02 | 2020-07-24 | 江苏江顺精密机电设备有限公司 | Traction head structure of three-head tractor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110465556B (en) | 2024-05-24 |
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