CN105689794B - A kind of scale sawing device - Google Patents
A kind of scale sawing device Download PDFInfo
- Publication number
- CN105689794B CN105689794B CN201610307080.4A CN201610307080A CN105689794B CN 105689794 B CN105689794 B CN 105689794B CN 201610307080 A CN201610307080 A CN 201610307080A CN 105689794 B CN105689794 B CN 105689794B
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- cylinder
- scale
- piston cylinder
- binder
- frame
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
- B23D47/04—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of devices for feeding, positioning, clamping, or rotating work
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- Mechanical Engineering (AREA)
- Sawing (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The present invention relates to a kind of scale sawing devices, including transmission roller channel, fixed ruler baffle, saw blade, scale frame, material pressing device, material pressing device is provided on the scale frame, scale base of frame is provided with transmission roller channel, described transmission roller channel one end is provided with fixed ruler baffle, outside is provided with saw blade, and the material pressing device is made of binder beam parts, support frame component, double cylinder parts.The apparatus structure is novel, easy to use, high yield rate, therefore has broad application prospects.
Description
Technical field
The present invention relates to light-alloys（Aluminium, magnesium etc.）Section bar or tubing scale saw technology field, especially a kind of length saw
It cuts and uses device.
Background technology
By fast development of China's last decade in terms of rail traffic and aircraft industry, aluminium and magnesium alloy extrusion section bar and
Tubing is widely used because of the high inherent characteristics of its light weight, Performance Strength.But compared with foreign countries, given birth in extruded threads
During production, the extrudate yield rate that China is generated is relatively low, its cost is caused to increase, and competitiveness reduces.And it constrains
The factor that yield rate improves is more, and one of which is exactly the length of finished product and sectional dimension precision.As shown in Figure 1, domestic mesh
The preceding tubing 4 generally using this form binder sawing, squeezed out in figure through a series of burning optimization on line of front and continued, traction, interruption,
After the processes such as stretching, it is placed on the conveyor roller 1 in attached drawing 2, then 5 length dimension of finished product according to customized in user is accurate
Fixed ruler baffle 3 is adjusted to the distance of L between saw blade 10, adjusts rear 1 longitudinal direction of conveyor roller colliery carries tubing 4 to the right（In order to improve
Production efficiency, the tubing 4 of institute's sawing are generally batch sawing, and tubing 4 is generally answered ＞ 2 according to sectional dimension, quantity, now pressed in figure
3 tubing 4 illustrate）Onto scale roller-way 2, and the right side of tubing 4 is bonded with the left side of fixed ruler baffle 3, so
Two pieces cylinder 8 in attached drawing 1 afterwards（It is oriented to by 4 guide rods 7）Material-pressing rack 9 is driven respectively（Including one 9-1 of material-pressing rack, binder
Two 9-2 of frame）Compacting tubing 4 is simultaneously declined, the last lateral sawing of saw blade 10 terminates backed off after random, so as to the finished product that formation length is L
5 (see attached drawings 2).It can be seen that from the description of above-mentioned series of process flow and attached drawing 1,2：1. one 9-1 of material-pressing rack compactings are
Two pieces tubing 4, and two 9-2 of material-pressing rack compactings are a tubing 4, this results in the difference of pressure-plate-force, in 10 sawing of saw blade
When can generate institute's sawing product cut that gradient is different in addition sawing process in tubing 4 generate transverse shifting, so as to cause finished product 5
Length dimension increases with slope deviation increase, rejection rate is cut；2. two pieces cylinder 8 is it cannot be guaranteed that synchronize binder, so as to cause two pieces
When material-pressing rack 9 contacts tubing 4 respectively, tubing 4 is inconsistent in longitudinal leap, so as to cause 5 length dimension of finished product inconsistent, waste product
Rate increases.If being designed as single cylinder, the sawing of batch section bar can cause pressure-plate-force not enough, so as to which rejection rate increases；3. it presses
For rack 9 according to the difference of product, the power that cylinder 8 is applied on material-pressing rack 9 is different, can only design it by maximum, force in design just
Property, and when suppressing sawing, material-pressing rack 9 cannot be interfered with saw blade 10, be conducted oneself with dignity so as to cause material-pressing rack 9 larger, and two pieces cylinder 8
Rod chamber 8-1 have no back pressure (see attached drawing 3), do not overcome the dead weight of material-pressing rack 9, so when suppressing thin-wall tube, often
Cause that press power is excessive and leads to the deformation of 5 tail end of product, so as to increase rejection rate；4. using two pieces material-pressing rack 9, two pieces it
Between gap location cannot carry out binder, it is no to be deformed it will cause 5 stress raisers of product, so as to increase rejection rate, together
When bulk when also resulting in pressing special-shaped material be restricted, so as to reduce production efficiency；5. in order to adapt to height phase
The larger variety classes section bar compacting sawing of difference, the stroke design of cylinder 8 is larger, and cylinder cylinder rod stability can be caused poor, this
Sample cylinder is easily damaged, and a series of equipment downtimes of front and continued can be caused after damage.
Invention content
Existing scale sawing device rejection rate is relatively high and production efficiency is relatively low in order to solve, so as to cause into
The problem of this increase, the present invention provide a kind of structure novel, the scale sawing device that easy to use, production efficiency is high.
To solve above-mentioned technical problem the technical scheme is that：A kind of scale sawing device, it is characterised in that：Packet
Transmission roller channel, fixed ruler baffle, saw blade, scale frame, material pressing device are included, material pressing device, scale are provided on the scale frame
Base of frame is provided with transmission roller channel, and described transmission roller channel one end is provided with fixed ruler baffle, and outside is provided with saw blade, the binder
Device is made of binder beam parts, support frame component, double cylinder parts.
The upper end of the scale frame is provided with air cylinder support, and lower end is provided with stabilizer blade.
The binder beam parts are made of binder beam, hollow shaft, bearing block, bearing, keyed gear, the hollow shaft tail end
It is fixed in bearing block, both sides are connected with keyed gear, and bearing is provided in the bearing block, is socketed with outside the hollow shaft
Binder beam.
Support frame as described above component is by guide rod, rack, supporting framework into the guide rod is arranged on the inside of supporting rack, institute
It states guide rod both sides and is provided with rack.
Double cylinder parts are made of dual piston cylinder, the single-piston cylinder for being hinged with counterbalance valve, cylinder connecting plate, institute
The forward flange end of single-piston cylinder stated dual piston cylinder and be hinged with counterbalance valve is fixed on cylinder connecting plate.
Head at the top of above-mentioned dual piston cylinder is connected with air cylinder support, and the head of bottom is connected with bearing block, described
Supporting rack is fixed on the inside of stabilizer blade, and the keyed gear is connected in rack.
The transmission roller channel is made of conveyor roller and scale roller-way, and described scale roller-way one end is provided with fixed ruler baffle,
Saw blade is provided on the outside of the other end.
The saw blade both sides are each provided with a set of material pressing device respectively.
The dual piston cylinder is made of upper single-piston cylinder and lower single piston-cylinder.
Soft rubber is provided with below the binder beam.
The process that the material pressing device uses for：Since a double-piston gas is installed at the material pressing device both ends respectively
Cylinder and a single-piston cylinder for being hinged with counterbalance valve are, it can be achieved that synchronous driving declines binder.The scale sawing device root
According to the cylinder stroke range of dual piston cylinder, the diameter dimension for the tubing that can be processed also is corresponding to it in a section model
It encloses, is described as follows：
(1) when the rod chamber of the upper cylinder of the dual piston cylinder and lower cylinder distinguishes air inlet, the double-piston gas
The upper cylinder of cylinder and the plunger shaft of lower cylinder are vented respectively, i.e., described fixed when dual piston cylinder is in contraction state, stroke is 0
The tubing that ruler sawing device can be processed is in greatest diametrical dimension state；(2) when the upper cylinder of the dual piston cylinder
Rod chamber air inlet, plunger shaft exhaust, the plunger shaft air inlet of the lower cylinder of the dual piston cylinder, rod chamber exhaust are that is, double
When the upper cylinder of piston-cylinder is in contraction, lower cylinder is in stretching state, stroke is equal to the shift motion of lower cylinder piston, institute
The tubing that stating scale sawing device can process is in mid diameter dimensional state；(3) it is upper when the dual piston cylinder
The plunger shaft of cylinder and lower cylinder distinguishes air inlet, and the upper cylinder of the dual piston cylinder and the rod chamber of lower cylinder are arranged respectively
Upper cylinder, the lower cylinder of gas, i.e. dual piston cylinder are all equal to upper cylinder cylinder body and lower cylinder piston in stretching state, stroke
During the sum of shift motion, the tubing that the scale sawing device can be processed is in minimum diameter dimensional state.The scale
It is respectively Φ D that sawing processes tubing greatest diametrical dimension, mid diameter size and minimum diameter size with device1、ΦD2、Φ
D3。
When pipe diameter dimension D meets condition D2≤D≤D1When, the lower cylinder piston of dual piston cylinder declines D1The row of-D
Journey, when pipe diameter size is D2When, maximum declines H1Stroke, i.e. H1=D1- D2, while it has been hinged with the single-piston gas of counterbalance valve
Cylinder rod chamber is in certain back pressure（This back pressure is used to offset the dead weight of binder beam）Lower exhaust acts so as to fulfill compacting；Work as tubing
Diameter dimension D meets condition D3≤ D ＜ D2When, the upper cylinder cylinder body of dual piston cylinder declines D2The stroke of-D（Note：Dual-active at this time
The lower section single-piston cylinder rod chamber exhaust of piston cylinder, plunger shaft are not vented, so as to ensure that lower section cylinder rod can simultaneously decline pressure
Material）, when pipe diameter size is D3When, maximum declines H2Stroke, i.e. H2=D2- D3, while it has been hinged with the single-piston of counterbalance valve
Cylinder rod chamber is further continued for keeping certain back pressure, is acted so as to fulfill compacting.
The present invention has the following advantages and beneficial effect compared with the prior art：
1）Present invention employs dual piston cylinders, have both increased the stroke of cylinder, in turn ensure the stability of cylinder cylinder rod,
The front and continued equipment downtime caused by the damage of cylinder is avoided, reduces production efficiency；
2）During dual piston cylinder binder of the present invention, using lazy-tongs realize binder synchronization, avoid batch pipe by
The press power that arrives is uneven, so as to improve batch pipe in length direction and the precision for cutting gradient, increases yield rate；
3）Binder beam of the present invention uses unjointed beam, because without interval gap m（See Fig. 1）, stress concentration is avoided, so
As long as 4 overall width of batch pipe is no more than the width of unjointed beam, it is possible to which batch sawing improves production efficiency；
4）Dual piston cylinder of the present invention drives binder beam to be used in binder using the single-piston cylinder for being hinged with counterbalance valve
The dead weight of binder beam is offset, Leading Edge Deformation problem occurs when avoiding compacting thin-wall material, improves yield rate.
Description of the drawings
Fig. 1 is the structure diagram of existing scale sawing material pressing device；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is the schematic diagram of gas circuit of existing scale sawing material pressing device；
Fig. 4 is the structure diagram of the scale sawing material pressing device of the present invention；
Fig. 5 is the side view of Fig. 4；
Fig. 6 is the vertical view of Fig. 5；
Fig. 7 is the partial enlarged view of Fig. 6；
Fig. 8 is the binder process flow chart of material pressing device of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings 4~8 and specific embodiment the present invention is described in further detail：
A kind of scale sawing device, it is described including transmission roller channel, fixed ruler baffle, saw blade, scale frame, material pressing device
Material pressing device is provided on scale frame, scale base of frame is provided with transmission roller channel, and described transmission roller channel one end is provided with fixed
Ruler baffle, outside are provided with saw blade, and the material pressing device is made of binder beam parts, support frame component, double cylinder parts.It is described
Fixed on the upper end quadrangle of scale frame 6 there are four air cylinder supports 22, and there are four stabilizer blades 23 for lower end installation；The binder beam parts
It is made of binder beam 13, hollow shaft 15, bearing block 20, bearing 19, keyed gear 16,15 tail end of hollow shaft is fixed on bearing
In seat 20, both sides are connected with keyed gear 16, and bearing 19 is fixed in the bearing block 20, is socketed with outside the hollow shaft 15
Binder beam 13；Support frame as described above component is made of guide rod 17, rack 18, supporting rack 14, and the guide rod 17 is fixed on support
14 inside of frame, 17 both sides of guide rod are fixed with rack 18；Double cylinder parts by dual piston cylinder 11, be hinged with back pressure
Single-piston cylinder 12, the cylinder connecting plate 21 of valve 24 are formed, the dual piston cylinder 11 and the single-piston for being hinged with counterbalance valve 24
The forward flange end of cylinder 12 is fixed on cylinder connecting plate 21；The head at 11 top of the dual piston cylinder respectively with air cylinder support
22 are connected, and the head of bottom is connected respectively with bearing block 20, and support frame as described above 14 is fixed on 23 inside of stabilizer blade, the band key teeth
Wheel 16 is connected in rack 18, and 13 lower section of binder beam is provided with soft rubber.
The transmission roller channel is made of conveyor roller 1 and scale roller-way 2, and described 2 one end of scale roller-way is provided with scale gear
Plate 3, other end outside are provided with saw blade 10, and the binder beam parts are arranged on the both sides of saw blade 10.
The application method of the present invention is as follows：
The first step：Hollow shaft 15 is penetrated into binder beam 13 first, is pacified at the both ends of binder beam 13 respectively by bolt, washer
It is packed into bearing block 20, then bearing 19 is packed into bearing block 20, and with axle sleeve and hole baffle ring fixing bearing 19, then exist again
Keyed gear 16 is installed at the both ends of hollow shaft 15, and is passed through axle end baffle plate, screw, washer and fixed, and material is thus formed a bands
The binder beam parts of gear；
Second step：Guide rod 17 is installed by bolt, washer pins, rack 18 is on supporting rack 14, so as to form a band
The support frame component of guide rod 17 and rack 18；
Third walks：Dual piston cylinder 11 and the tipping with counterbalance valve are made by oneself by bolt, washer, cylinder connecting plate 21
The single-piston cylinder 12 forward flange end of counterbalance valve 24 is connected as one, and forms a double cylinder parts；
4th step：After completing above three step, it is double that four air cylinder supports 22, four are installed by bolt, washer sequence
Cylinder part is symmetrically arranged on 6 top of scale frame, then passes through bolt, washer, pin four guides 17 of installation and rack
18 supporting rack 14 finally lifts binder beam parts of the two pieces with gear respectively from leading on four stabilizer blades 23 of scale frame 6
It is inserted in the lower section of bar 17, and bearing block 20 and dual piston cylinder 11 is caused using axis pin and split pin and have been hinged with counterbalance valve 24
The cylinder rod head of single-piston cylinder 12 be hinged；
5th step：13 lower part of binder beam is provided with conveyor roller 1 and scale roller-way 2, and described 2 one end of scale roller-way is consolidated
Surely there is fixed ruler baffle 3, saw blade 10 is provided on the outside of the other end；
6th step：5 length dimension of finished product according to customized in user accurately adjusts fixed ruler baffle 3 to L between saw blade 10
Distance adjusts rear 1 longitudinal direction of conveyor roller colliery carries tubing 4 to the right（In order to improve production efficiency, the tubing 4 of institute's sawing is generally
Batch sawing, tubing 4 generally answer ＞ 2 according to sectional dimension, quantity,）Onto scale roller-way 2, and cause tubing 4 right side with
Then the left side fitting of fixed ruler baffle 3 is driven by dual piston cylinder 11 with the single-piston cylinder 12 for being hinged with counterbalance valve 24
Binder beam 13 declines compacting tubing 4, and the last lateral sawing of saw blade 10 terminates backed off after random, so as to the finished product 5 that formation length is L.
The use process technological process principle of the material pressing device is as follows：
See Fig. 8,4-1 is the tubing that greatest diametrical dimension is Φ D1 in figure, and 4-2 is the pipe that mid diameter size is Φ D2
Material, 4-3 are the tubing that minimum diameter size is Φ D3.As 4 depth of sections of section bar >=D2, the lower single-piston of dual piston cylinder 11
Cylinder 11-2 plunger shaft air inlets, rod chamber exhaust, cylinder rod decline.Because of the binder beam parts with gear and dual piston cylinder 11 and
The cylinder rod head of the single-piston cylinder 12 of counterbalance valve 24 while hinged is hinged with, so the lower cylinder cylinder rod of dual piston cylinder 11 and connecing
It has filled the cylinder rod of the single-piston cylinder 12 of counterbalance valve 24 while the binder beam parts with gear is driven to be engaged with rack, and to lead
Section bar 4 and product 5 are suppressed respectively to be oriented to decline to bar 17, you can realize binder（Note：At this moment the list for being hinged with counterbalance valve 24 is living
The rod chamber exhaust of piston cylinder 12）.
As 4 depth of sections of section bar >=D3 during ＜ D2, upper single-piston cylinder 11-1 and the lower single-piston of dual piston cylinder 11
The air inlet simultaneously of the plunger shaft of cylinder 11-2, while the rod chamber of upper single-piston cylinder 11-1 and lower single piston-cylinder 11-2 are arranged respectively
The cylinder rod of gas, 11 one-piece cylinder of dual piston cylinder and lower single piston-cylinder 11-2 decline.Because of dual piston cylinder 11 and tipping
The 12 forward flange end of single-piston cylinder of counterbalance valve 24 is connected as one, and the binder beam parts with gear by cylinder connecting plate 21
It is hinged simultaneously with the cylinder rod head of dual piston cylinder 11 and the single-piston cylinder 12 for being hinged with counterbalance valve 24, so dual piston cylinder 11
One-piece cylinder and the cylinder rod of lower single piston-cylinder 11-2 and the cylinder body and cylinder rod of the single-piston cylinder 12 for being hinged with counterbalance valve 24
The binder beam parts with gear is driven to be engaged with rack simultaneously, and section bar is suppressed with guide rod 17 respectively to be oriented to continue to decline
4 and product 5, you can realize binder（Note：At this moment the rod chamber for being hinged with the single-piston cylinder 12 of counterbalance valve 24 continues to be vented）.
After the completion of suppressing sawing, the upper single-piston cylinder 11-1 of dual piston cylinder 11 has bar with lower single piston-cylinder 11-2's
Chamber air inlet simultaneously, plunger shaft exhaust, achieves that the cylinder rod of dual piston cylinder 11, the single-piston gas for being hinged with counterbalance valve 24 in this way
The cylinder rod of cylinder 12 and binder beam parts with gear return to the position originally shunk, so as to complete a binder sawing work week
Phase.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention be not limited thereto, root
Be subject to equivalent substitution or change according to technical scheme of the present invention and its inventive concept, should all cover protection scope of the present invention it
It is interior.
Claims (7)
1. a kind of scale sawing device, it is characterised in that：Including transmission roller channel, fixed ruler baffle, saw blade, scale frame, binder
Device is provided with material pressing device on the scale frame, and scale base of frame is provided with transmission roller channel, described transmission roller channel one end
Fixed ruler baffle is provided with, outside is provided with saw blade, and the material pressing device is by binder beam parts, support frame component, double cylinder parts
It forms；
The binder beam parts are by binder beam（13）, hollow shaft（15）, bearing block（20）, bearing（19）, keyed gear（16）Structure
Into the hollow shaft（15）Tail end is fixed on bearing block（20）Interior, both sides are connected with keyed gear（16）, the bearing block（20）
Inside it is provided with bearing（19）, the hollow shaft（15）Outside is socketed with binder beam（13）；
Double cylinder parts are by dual piston cylinder（11）, be hinged with counterbalance valve（24）Single-piston cylinder（12）, cylinder connection
Plate（21）It forms, the dual piston cylinder（11）Be hinged with counterbalance valve（24）Single-piston cylinder（12）Forward flange end fix
In cylinder connecting plate（21）On；
The dual piston cylinder（11）The head and air cylinder support at top（22）It is connected, the head and bearing block of bottom（20）Phase
Even, support frame as described above component is fixed on stabilizer blade（23）Inside, the keyed gear（16）It is connected to rack（18）It is interior.
2. scale sawing device according to claim 1, it is characterised in that：The scale frame（6）Upper end setting
There is air cylinder support（22）, lower end is provided with stabilizer blade（23）.
3. scale sawing device according to claim 1, it is characterised in that：Support frame as described above component is by guide rod
（17）, rack（18）, supporting rack（14）It forms, the guide rod（17）It is arranged on supporting rack（14）Inside, the guide rod
（17）Both sides are provided with rack（18）.
4. scale sawing device according to claim 1, the transmission roller channel is by conveyor roller（1）With scale roller-way
（2）It forms, the scale roller-way（2）One end is provided with fixed ruler baffle（3）, other end outside is provided with saw blade（10）.
5. scale sawing device according to claim 4, the saw blade（10）Both sides are each provided with a set of binder respectively
Device.
6. scale sawing device according to claim 1, the dual piston cylinder（11）By upper single-piston cylinder（11-
1）With lower single piston-cylinder（11-2）It forms.
7. scale sawing device according to claim 1, the binder beam（13）Lower section is provided with soft rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610307080.4A CN105689794B (en) | 2016-05-11 | 2016-05-11 | A kind of scale sawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610307080.4A CN105689794B (en) | 2016-05-11 | 2016-05-11 | A kind of scale sawing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105689794A CN105689794A (en) | 2016-06-22 |
| CN105689794B true CN105689794B (en) | 2018-06-26 |
Family
ID=56217922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610307080.4A Expired - Fee Related CN105689794B (en) | 2016-05-11 | 2016-05-11 | A kind of scale sawing device |
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| Country | Link |
|---|---|
| CN (1) | CN105689794B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107297538B (en) * | 2017-08-24 | 2018-11-27 | 中北大学 | A kind of sizing mechanism of reinforcing for sheet shearing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202291621U (en) * | 2011-08-15 | 2012-07-04 | 江门市威特铝业科技有限公司 | Device for reducing tailings for automatic sawing machine |
| CN102554343A (en) * | 2012-01-17 | 2012-07-11 | 太仓威格玛机械设备有限公司 | Full-automatic corner connector cutting device |
| CN204934723U (en) * | 2015-07-31 | 2016-01-06 | 天津银宝山新科技有限公司 | Monolateral cutting type tubing cutting machine |
| CN205183938U (en) * | 2015-11-26 | 2016-04-27 | 南昌市雄一铝业有限公司 | Semi -automatic aluminium cutting -off grinder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2567426B2 (en) * | 1987-11-10 | 1996-12-25 | 株式会社アマダ | Material feeding device of cutting machine |
| CN201960208U (en) * | 2010-12-28 | 2011-09-07 | 中南大学 | Perpendicular auxiliary clamping device of gang saw machine |
-
2016
- 2016-05-11 CN CN201610307080.4A patent/CN105689794B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202291621U (en) * | 2011-08-15 | 2012-07-04 | 江门市威特铝业科技有限公司 | Device for reducing tailings for automatic sawing machine |
| CN102554343A (en) * | 2012-01-17 | 2012-07-11 | 太仓威格玛机械设备有限公司 | Full-automatic corner connector cutting device |
| CN204934723U (en) * | 2015-07-31 | 2016-01-06 | 天津银宝山新科技有限公司 | Monolateral cutting type tubing cutting machine |
| CN205183938U (en) * | 2015-11-26 | 2016-04-27 | 南昌市雄一铝业有限公司 | Semi -automatic aluminium cutting -off grinder |
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| Publication number | Publication date |
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| CN105689794A (en) | 2016-06-22 |
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