CN107824867B - A kind of division techniques such as pipe fitting - Google Patents
A kind of division techniques such as pipe fitting Download PDFInfo
- Publication number
- CN107824867B CN107824867B CN201711223302.5A CN201711223302A CN107824867B CN 107824867 B CN107824867 B CN 107824867B CN 201711223302 A CN201711223302 A CN 201711223302A CN 107824867 B CN107824867 B CN 107824867B
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- gear
- rack
- pipe fitting
- mobile
- support bar
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/20—Storage arrangements; Piling or unpiling
- B21D43/22—Devices for piling sheets
-
- 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
- B23D21/00—Machines or devices for shearing or cutting tubes
-
- 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
- B23D33/00—Accessories for shearing machines or shearing devices
- B23D33/02—Arrangements for holding, guiding, and/or feeding work during the operation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Making Paper Articles (AREA)
- Sawing (AREA)
Abstract
The present invention relates to pipe fittings to cut field, and in particular to a kind of division techniques such as pipe fitting include the following steps: step 1: preparing a kind of pipe fitting cutting equipment；Step 2: fixed limit；Step 3: cutting swelling；Step 4: withdrawing；Step 5: blanking；Step 6: feeding；Step 7: preparation is cut next time.It when using the technical program, effectively avoids the problem that pipe fitting is easy to happen deformation in fixation procedure, while may insure that pipe fitting Cutting Length is uniform, also solve the problems, such as that the pipe fitting one end that first lands is easily damaged.
Description
Technical field
The present invention relates to pipe fittings to cut field, and in particular to a kind of division techniques such as pipe fitting.
Background technique
When repeatedly being cut to a pipe fitting, general operating procedure are as follows: 1, pipe fitting is placed on cutting work station；2,
Tube wall is fixedly clamped by clamp system；3, cutting mechanism cuts pipe fitting；4, the pipe fitting after cutting falls automatically to be received
Collection；5, clamp system unclamps pipe fitting, and artificial mobile pipe fitting is cut next time.It is cut in the pipe fitting relatively thin to tube wall
In the process, there are the following problems: it is relatively thin to be primarily due to tube wall, when clamp system is clamped fixed to tube wall, tube wall meeting
Deformation occurs；Followed by pipe fitting one end can first land in dropping process after pipe fitting cutting, be easy to cause pipe fitting to damage after hitting
It is bad；It besides needs manually to feed pipe fitting after the completion of cutting every time, the tubular length after not can guarantee cutting is impartial, also
Increase additional cost of labor, processing efficiency is caused to reduce.
Summary of the invention
The purpose of the present invention is to provide in a kind of pipe fitting cutting process will not deformation occurs, not will lead to pipe fitting damage and
The technique for realizing automatic equidistant cutting.
In order to achieve the above objectives, the technical solution of the present invention is to provide division techniques such as a kind of pipe fittings, include the following steps:
Step 1: prepare a kind of pipe fitting cutting equipment, including rack, supporting table, collecting box, No.1 gear, clamping device,
It transfers mechanism, cutting mechanism and pushes against mechanism；The No.1 gear is rotationally connected in rack, and No.1 gear is incomplete tooth
Wheel；The clamping device includes No.1 clamping unit and No. two clamping units, and the No.1 clamping unit includes No.1 grip block
And the convex block being fixedly connected with No.1 grip block, No.1 grip block are connect with housing slide, No.1 grip block one end is fixed with
The No.1 rack gear that can be engaged with No.1 gear；No. two clamping units include No. two grip blocks and air bag, No. two grip blocks with
Rack is hinged, and cavity is equipped in No. two grip blocks, the air blower of the interior conveying gas of the oriented air bag of installation in cavity；The shift machine
Structure includes adjusting rod, support bar and swingle, and support bar is connect with housing slide, and support bar one end and adjusting rod one end are hinged,
The adjusting rod other end and the end face of No.1 gear are hinged；The support bar other end and swingle one end are hinged, the swingle other end with
No. two grip blocks are hinged；Wherein swingle is equipped with stroke hole, is fixed with the pin in stroke hole in rack；The cutting
Mechanism includes No. two rack gears, No. two gears, No. three rack gears and cutter；No. two rack gears are fixed on support bar, No. two teeth
Wheel is rotationally connected in rack, and No. three rack gears are slidably connected in rack, and the cutter are fixed with No. three rack gear one end
Connection；Wherein No. two gears are engaged with No. two rack gears, No. three rack gears；The abutting mechanism includes pushing against item, uniformly consolidating
It is scheduled on and pushes against the abutting block on item and the cylinder for being limited to abutting block, the cylinder is fixed in rack, described
Item is pushed against to be fixedly connected with the No.1 grip block other end；
Step 2: setting starting and the shut-in time interval of cylinder and air blower first, pipe fitting is then placed on support
On platform, pipe fitting one end is pushed against with No.1 grip block and makes convex block be inserted into the end pipe fitting is fixed, while cylinder starts, cylinder
Output elongate axis is simultaneously limited to block is pushed against；
Step 3: the rotation of No.1 gear drives adjusting rod to swing, thus drive support bar mobile, the mobile process of support bar
It is middle to drive No. two rack gears mobile, to drive No. two gears rotation engaged with No. two rack gears, and then drive No. three rack gears mobile,
Cutter are moved under the action of No. three rack gears and are cut to pipe fitting；Drive swingle around pin while support bar is mobile
Rotation pushes against the end after No. two grip blocks and another end in contact of pipe fitting, while air blower opens to drive No. two grip block rotations
It is dynamic, air bag swelling pipe fitting inner wall under the action of air blower；
Step 4: during No.1 gear continues to rotate, support bar opposite direction under the action of adjusting rod is mobile, branch
Drive No. two rack gear opposite directions mobile during stay opposite direction is mobile, to drive No. two gears engaged with No. two rack gears
Opposite direction rotation, and then drive No. three rack gear opposite directions mobile, cutter opposite direction under the action of No. three rack gears is mobile；Support
Swingle is driven to rotate around pin opposite direction while opposite direction is mobile, so that No. two grip block opposite directions rotations are driven, into
And drive the pipe fitting rotation cut；
Step 5: when pipe fitting turns to minimum point by cut end, air blower is shut down, and is cut after the gas evolution in air bag
Pipe fitting fall in collecting box；
Step 6: No.1 gear rotates a period of time exhaust hood and closes, and cylinder output shaft is shunk, and releases to the limit for pushing against block
Position, No.1 gear is engaged with No.1 rack gear at this time, and No.1 rack gear moves under the action of No.1 gear, so that No.1 be driven to clamp
Block is mobile, and then drives pipe fitting mobile；
Step 7: when No.1 gear is no longer engaged with No.1 rack gear, No.1 gear is rotated one week, and pipe fitting is next at this time
Cut point is located at below cutter, while cylinder starts, and cylinder output elongate axis simultaneously again limits abutting block, then weighs
Multiple above-mentioned steps 3-6, completes the multiple cutting to pipe fitting.
This programme has the technical effect that No.1 grip block and convex block can be fixed pipe fitting, while No. two grip blocks
It can cooperate No.1 grip block that pipe fitting is fixed, effectively avoid the problem that pipe fitting is easy to happen deformation in fixation procedure；
Cooperate simultaneously with No.1 gear, No.1 rack gear, transfer mechanism and cutting mechanism, automatic equidistant movement can be carried out to pipe fitting, really
Keeping part Cutting Length is uniform；Cooperate again with swingle, No. two grip blocks, air bag and air blower, pipe fitting can be put down gently,
First land one end damage in pipe fitting dropping process after effectivelying prevent cutting, avoids unnecessary expenditures；In addition only pass through one
The running of whole equipment, more saving energy consumption are realized in the rotation of number gear, while equipment is simple, easy to operate.
Further, the exhaust fan of gas in extraction air bag is installed in cavity described in step 1.The technology of this programme is imitated
Fruit is: after air blower stops air blast, exhaust fan can quickly be extracted the gas in air bag out, it is ensured that pipe fitting cut end is moved to most
It is fallen in collecting box rapidly when low spot, to realize that air bag operates the swelling of next section of pipe fitting.
Further, supporting table described in step 1 is equipped with and the matched through slot of pipe fitting.This programme has the technical effect that
Pipe fitting is placed in through slot to the stability that can increase pipe fitting, while through slot can be the pipe fitting guiding in moving process.
Further, collecting box bottom surface described in step 1 is equipped with rubber pad.This programme has the technical effect that pipe fitting one
End can topple over after landing, and rubber pad can reduce the impact force of pipe fitting and bottom, further ensure that the integrality of pipe fitting.
Further, the hole wall of stroke hole described in step 1 is equipped with graphite linings.This programme has the technical effect that pin
It is moved repeatedly in stroke hole, the frictional force of pin and hole wall can be mitigated by the way that graphite linings are arranged on the hole wall in stroke hole,
Swingle is prevented to be worn.
When by adopting the above technical scheme, effectively avoid the problem that pipe fitting is easy to happen deformation in fixation procedure, while can
To ensure that pipe fitting Cutting Length is uniform, also solve the problems, such as that the pipe fitting one end that first lands is easily damaged.
Detailed description of the invention
Fig. 1 is schematic diagram before pipe fitting cutting equipment used in the present invention is cut；
Fig. 2 is schematic diagram after the cutting of pipe fitting cutting equipment used in the present invention.
Specific embodiment
Below by the further details of explanation of specific embodiment:
Appended drawing reference in Figure of description includes: supporting table 1, collecting box 2, No.1 gear 3, No.1 grip block 4, convex block
5,6, No. two grip blocks 7 of No.1 rack gear, air bag 8, air blower 9, exhaust fan 10, adjusting rod 11, support bar 12, swingle 13, pin
14, No. two gear 16, three of rack gear 15, two rack gears 17, cutter 18 are followed closely, item 19 is pushed against, pushes against block 20.
Specific step is as follows for a kind of division techniques such as pipe fitting:
Step 1: prepare a kind of pipe fitting cutting equipment as shown in Figure 1, 2, including supporting table 1, collecting box 2, servo motor,
No.1 gear 3, clamping device, transfer mechanism, cutting mechanism and abutting mechanism.Servo motor is bolted in rack,
No.1 gear 3 is fixedly connected on servo motor output shaft, and wherein No.1 gear 3 is partial gear.Wherein opened in supporting table 1
There is through slot, through slot is for placing pipe fitting；In addition 2 bottom surface of collecting box is fixed with rubber pad.
Clamping device includes No.1 clamping unit and No. two clamping units, and No.1 clamping unit includes 4 He of No.1 grip block
Convex block 5, convex block 5 and No.1 grip block 4 weld, and through-hole is provided on No.1 grip block 4, and rack passes through through-hole and makes No.1 grip block
4 can horizontally slip relative to rack；Wherein 4 upper end of No.1 grip block is welded with No.1 rack gear 6,6 energy of No.1 rack gear and No.1
Gear 3 engages.No. two clamping units include No. two grip blocks 7 and air bag 8, as shown in Figure 1, No. two 7 upper left corners of grip block and machine
Frame is hinged, and cavity is provided in No. two grip blocks 7, and air blower 9 and exhaust fan 10, air blower 9 and exhaust fan 10 are equipped in cavity
Pass through hose and conveying gas and the gas bleeding out of air bag 8 into air bag 8.
Transfer mechanism includes adjusting rod 11, support bar 12 and the swingle 13 in fold-line-shaped, the hole being provided in rack,
Support bar 12 passes through hole and horizontally slips relative to hole；12 left end of support bar and adjusting rod 11 are hinged by holding, adjusting rod 11
Left end and the end face of No.1 gear 3 are hinged；12 right end of support bar and 13 upper end of swingle are hinged, 13 lower end of swingle and No. two folders
It is hinged to hold block 7.It is wherein provided with stroke hole on swingle 13, graphite linings are fixed on the hole wall in stroke hole, are fixed with position in rack
In the pin 14 in stroke hole.
Cutting mechanism includes No. two rack gears 17 of gear 16, three of rack gear 15, two and cutter 18；No. two rack gears 15 are fixed
In 12 lower surface of support bar, on the rack, No. three 17 vertical sliding of rack gear connections on the rack, are cut for No. two rotation connections of gear 16
Cutter 18 and No. three 17 lower ends of rack gear are welded；Wherein No. two gears 16 are engaged in No. two rack gears 15 and No. three rack gears 17.
It pushes against mechanism to include cylinder, push against item 19 and be uniformly fixed on the abutting block 20 pushed against on item 19, cylinder passes through
Bolt is fixed on the rack, and pushes against item 19 and 4 lower end of No.1 grip block is welded, and cylinder, which is located at, pushes against 19 front of item, cylinder output
It can be pushed against after elongate axis and push against block 20, No.1 grip block 4 is prevented to be moved to the left.
Step 2: when being cut, starting and the shut-in time interval of cylinder and air blower 9 are set first, it then will pipe
Part is placed in supporting table 1, pushes against pipe fitting left end with No.1 grip block 4, and so that convex block 5 is inserted into left end and pipe fitting is fixed,
Cylinder starting simultaneously, cylinder output elongate axis are simultaneously limited (11 left end of adjusting rod is located at A point at this time) to block 20 is pushed against；
Step 3: and then starting servo motor, No.1 gear 3 rotate counterclockwise under the action of servo motor, drive and adjust
Bar 11 is swung, so that support bar 12 be driven to be moved to the left, support bar 12 drives No. two rack gears 15 to the left during being moved to the left
Mobile, so that No. two gears 16 engaged with No. two rack gears 15 be driven to rotate counterclockwise, and then No. three rack gears 17 of drive are to moving down
Dynamic, cutter 18 are moved down under the action of No. three rack gear 17 and are cut to pipe fitting；Support bar 12 is moved to the left same
When drive swingle 13 rotated clockwise around pin 14, thus drive No. two grip blocks 7 rotated clockwise around hinge joint, No. two folder
It holds and pushes against right end after block 7 is contacted with pipe fitting right end, while air blower 9 starts, air bag 8 expands and swollen under the action of air blower 9
Tight pipe fitting inner wall；
Step 4: during No.1 gear 3 continues to rotate, adjusting rod 11 is moved to B point, and support bar 12 is in adjusting rod
Move right under the action of 11, support bar 12 move right during drive No. two rack gears 15 move right, thus drive with
No. two gears 16 of No. two rack gears 15 engagement rotate clockwise, and then No. three rack gears 17 is driven to move up, and cutter 18 are three
It is moved up under the action of number rack gear 17；Swingle 13 is driven to turn counterclockwise while support bar 12 moves right around pin 14
It is dynamic, so that No. two grip blocks 7 be driven to rotate counterclockwise around hinge joint, and then the pipe fitting cut is driven to rotate counterclockwise；
Step 5: when pipe fitting turns to minimum point by cut end, air blower 9 is shut down, exhaust fan 10 starts, in air bag 8
The pipe fitting that gas is cut after being extracted is fallen in collecting box 2；
Step 6: No.1 gear 3 rotates a period of time exhaust hood and closes, and cylinder output shaft is shunk, and releases to abutting block 20
Limit, No.1 gear 3 is engaged with No.1 rack gear 6 at this time；No.1 rack gear 6 moves right under the action of No.1 gear 3, thus band
Dynamic No.1 grip block 4 moves right, and then pipe fitting is driven to move right；
Step 7: when No.1 gear 3 is no longer engaged with No.1 rack gear 6, No.1 gear 3 just rotates one week (adjusting rod 11
Left end is again positioned at A point), the next cut point of pipe fitting is located at 18 lower section of cutter at this time, while cylinder starts, cylinder output shaft
It extends and is limited to block 20 is pushed against again；Then repeat the above steps 3-6, completes the multiple cutting to pipe fitting.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those skilled in the art,
Without departing from the inventive concept of the premise, several modifications and improvements can also be made, these also should be considered as guarantor of the invention
Range is protected, these all will not influence the effect and patent practicability that the present invention is implemented.The present invention omits the technology of description, shape
Shape, construction portion are well-known technique.
Claims (5)
1. division techniques such as a kind of pipe fittings, which comprises the steps of:
Step 1: preparing a kind of pipe fitting cutting equipment, including rack, supporting table, collecting box, No.1 gear, clamping device, transfer
Mechanism, cutting mechanism and abutting mechanism；The No.1 gear is rotationally connected in rack, and No.1 gear is partial gear；
The clamping device includes No.1 clamping unit and No. two clamping units, the No.1 clamping unit include No.1 grip block and
The convex block being fixedly connected with No.1 grip block, No.1 grip block are connect with housing slide, and No.1 grip block one end is fixed with can be with
The No.1 rack gear of No.1 gear engagement；No. two clamping units include No. two grip blocks and air bag, No. two grip blocks and rack
Hingedly, cavity is equipped in No. two grip blocks, the air blower of the interior conveying gas of the oriented air bag of installation in cavity；Transfer mechanism packet
Adjusting rod, support bar and swingle are included, support bar is connect with housing slide, and support bar one end and adjusting rod one end are hinged, is adjusted
The bar other end and the end face of No.1 gear are hinged；The support bar other end and swingle one end are hinged, the swingle other end and No. two
Grip block is hinged；Wherein swingle is equipped with stroke hole, is fixed with the pin in stroke hole in rack；The cutting mechanism
Including No. two rack gears, No. two gears, No. three rack gears and cutter；No. two rack gears are fixed on support bar, and No. two gears turn
Dynamic to be connected in rack, No. three rack gears are slidably connected in rack, and the cutter are fixedly connected with No. three rack gear one end；
Wherein No. two gears are engaged with No. two rack gears, No. three rack gears；The abutting mechanism include push against item, uniformly be fixed on to
Abutting block on tight item and the cylinder for being limited to abutting block, the cylinder are fixed in rack, the abutting item
It is fixedly connected with the No.1 grip block other end；
Step 2: setting starting and the shut-in time interval of cylinder and air blower first, pipe fitting is then placed on supporting table
On, pipe fitting one end is pushed against with No.1 grip block and makes convex block be inserted into the end pipe fitting is fixed, while cylinder starts, and cylinder is defeated
Out elongate axis and to push against block limit；
Step 3: the rotation of No.1 gear drives adjusting rod to swing, thus drive support bar mobile, band during support bar is mobile
Dynamic No. two rack gears are mobile, to drive No. two gears rotation engaged with No. two rack gears, and then drive No. three rack gears mobile, cutting
Knife is moved under the action of No. three rack gears and is cut to pipe fitting；Swingle is driven to turn around pin while support bar is mobile
It is dynamic, to drive No. two grip block rotations, the end is pushed against after No. two grip blocks and another end in contact of pipe fitting, while air blower opens
It is dynamic, air bag swelling pipe fitting inner wall under the action of air blower；
Step 4: during No.1 gear continues to rotate, support bar opposite direction under the action of adjusting rod is mobile, support bar
Drive No. two rack gear opposite directions mobile during opposite direction is mobile, to drive No. two gear negative sides engaged with No. two rack gears
To rotation, and then drive No. three rack gear opposite directions mobile, cutter opposite direction under the action of No. three rack gears is mobile；Support bar is anti-
Swingle is driven to rotate around pin opposite direction while direction is mobile, to drive No. two grip block opposite direction rotations, and then band
The dynamic pipe fitting rotation cut；
Step 5: when pipe fitting turns to minimum point by cut end, air blower is shut down, the pipe cut after the gas evolution in air bag
Part is fallen in collecting box；
Step 6: No.1 gear rotates a period of time exhaust hood and closes, and cylinder output shaft is shunk, and releases the limit to block is pushed against, this
When No.1 gear engaged with No.1 rack gear, No.1 rack gear moves under the action of No.1 gear, thus drive No.1 grip block move
It is dynamic, and then drive pipe fitting mobile；
Step 7: when No.1 gear is no longer engaged with No.1 rack gear, No.1 gear is rotated one week, the next cutting of pipe fitting at this time
Point be located at cutter below, while cylinder start, cylinder output elongate axis and again to abutting block limit, then repeat
Step 3-6 is stated, the multiple cutting to pipe fitting is completed.
2. division techniques such as a kind of pipe fittings according to claim 1, it is characterised in that: be equipped in cavity described in step 1
Extract the exhaust fan of gas in air bag out.
3. division techniques such as a kind of pipe fittings according to claim 2, it is characterised in that: supporting table described in step 1 is equipped with
With the matched through slot of pipe fitting.
4. division techniques such as a kind of pipe fittings according to claim 3, it is characterised in that: collecting box bottom surface described in step 1 is set
There is rubber pad.
5. division techniques such as a kind of pipe fittings according to claim 4, it is characterised in that: the hole wall of stroke hole described in step 1
It is equipped with graphite linings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711223302.5A CN107824867B (en) | 2017-11-29 | 2017-11-29 | A kind of division techniques such as pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711223302.5A CN107824867B (en) | 2017-11-29 | 2017-11-29 | A kind of division techniques such as pipe fitting |
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| Publication Number | Publication Date |
|---|---|
| CN107824867A CN107824867A (en) | 2018-03-23 |
| CN107824867B true CN107824867B (en) | 2019-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711223302.5A Active CN107824867B (en) | 2017-11-29 | 2017-11-29 | A kind of division techniques such as pipe fitting |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846394A (en) * | 2021-02-26 | 2021-05-28 | 深圳天明堂实业有限公司 | Auxiliary cutting device for aluminum alloy pipeline |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU719819A1 (en) * | 1978-04-07 | 1980-03-05 | Предприятие П/Я В-8406 | Pipe cutting device |
| CN205600027U (en) * | 2016-04-15 | 2016-09-28 | 上海闽坚铝业有限公司 | Aluminum product high efficiency cutting device |
| CN205704503U (en) * | 2016-04-27 | 2016-11-23 | 黄根来 | A kind of building timber efficient cutting |
| CN205733214U (en) * | 2016-05-19 | 2016-11-30 | 南安市智德机械设备有限公司 | A kind of metal pipe material fixed-length cutting device |
| CN206139893U (en) * | 2016-10-15 | 2017-05-03 | 宁夏百辰工业产品设计有限公司 | Device is cuted to high -precision pseudotype fixed length of copper pipe |
| CN206200229U (en) * | 2016-11-16 | 2017-05-31 | 广东技术师范学院 | A kind of Copper fabrication controllable type copper pipe intercept unit |
| CN206445274U (en) * | 2017-01-03 | 2017-08-29 | 天津市佳格交通配件有限公司 | A kind of fixed length pipe cutting machine of adjustable withdrawing distance |
| CN206643424U (en) * | 2017-04-25 | 2017-11-17 | 叶宝义 | A kind of handware efficient cutting |
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2017
- 2017-11-29 CN CN201711223302.5A patent/CN107824867B/en active Active
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