CN105458727A - Rolling forming production line of square tubes of multiple specifications - Google Patents
Rolling forming production line of square tubes of multiple specifications Download PDFInfo
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- CN105458727A CN105458727A CN201510895669.6A CN201510895669A CN105458727A CN 105458727 A CN105458727 A CN 105458727A CN 201510895669 A CN201510895669 A CN 201510895669A CN 105458727 A CN105458727 A CN 105458727A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/06—Metal-working plant comprising a number of associated machines or apparatus
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Abstract
Disclosed is a rolling forming production line of square tubes of multiple specifications. The production line comprises a coiled-disc steel plate strip unwinding frame, a steel plate strip guide device, a steel plate leveling machine, a square tube double-top-side rolling unit, a square tube double-side-edge rolling unit, a square tube forming unit, a square tube top side welding machine, a weld line polishing machine, a square tube cooling groove, a square tube straightening unit and a square tube fixed-length cutting-off machine which are mounted on one straight line. A vertical locating frame and a horizontal locating frame are arranged in the steel belt strip guide device, and a pad roller and a hydraulic leveling roller are mainly mounted on a rack of the steel plate leveling machine; the internal structure of the square tube double-top-side rolling unit is similar to the internal structure of the square tube double-side-edge rolling unit, and the square tube double-top-side rolling unit and the square tube double-side-edge rolling unit are each provided with an upper rotating shaft and a lower rotating shaft; the lower rotating shafts are provided with folding mat wheels, and the upper rotating shafts are provided with rolling wheels; a servo motor is arranged on the rack; a mat wheel is arranged on a lower shaft of a square pipe forming machine, a rolling wheel is arranged on an upper shaft of the forming machine, and a side pressing wheel is arranged between the upper shaft and the lower shaft; after a welding machine conducts welding on square tube gaps, fixed-length cutting is carried out after polishing and cooling; and the production line is used for producing the square tubes, the efficiency is high, and the quality is good.
Description
Technical field
This technology belongs to large diameter thick wall steel pipe production technical field, is specifically related to a kind of many specifications square tube roll-forming line.
Background technology
Heavy caliber thick wall rectangular steel tube, also referred to as steel cold-forming shapes, it is dull and stereotyped for mother metal with steel, and after cold bend(ing) machine-shaping, then form through high-frequency welding, heavy caliber thick wall rectangular steel tube has been widely used in numerous industry.
In prior art, mainly contain following two kinds of modes and produce heavy caliber thick wall rectangular steel tube:
First kind of way: use and the steel flat blank material of final products fitting dimensions, utilize bender by its bending, close through rolling, joint welding, welding and aligning shaping, finally form heavy caliber thick wall type rectangular steel tube.Adopt and produce heavy caliber rectangular steel tube in this way, because bender once can only a limit of folding square steel pipe, and can only produce a steel pipe, production efficiency is not high at every turn; In addition, the steel pipe that this mode is produced, even if through aligning shaping, each face of rectangular steel tube also there will be the phenomenon of torsional deformation in various degree, causes rectangular steel tube internal stress uneven, affects square tube quality.
The second way is: first by steel coil strip pressure, be welded into pipe, then pipe is squeezed into square tube, this mode will through pipe volume pressure and the pipe side of pressure twice production process, its complex manufacturing, and use equipment is numerous, and production cost is higher; And at pipe when being squeezed into square tube, because the crushing resistance power of pipe is comparatively large, the mechanical energy of producing consumption is comparatively large, and production efficiency is lower.
Also have some in the prior art by the equipment of steel plate roll extrusion, folding groove, these equipment lacks quantity-produced equipment, can not steel plate be made to form square tube by flanging continuously; And this equipment in use, in its rolling mechanism, the distance of flanging wheel adopts the mode of manual adjustment width, and the speed of its adjustment is comparatively slow, and the range accuracy after adjustment is poor, can not adapt to the need of production of square tube tinuous production.
Summary of the invention
For in prior art, lack disposable for steel band roll extrusion, the special equipment being welded into square tube, adopt and steel coil strip pressure welding is connected into pipe, again pipe is squeezed into the mode of production of square tube, there is production process many, production cost is large, and product quality is difficult to the problem be consistent, the invention provides a kind of many specifications square tube roll-forming line, solve problems of the prior art.
Technical scheme of the present invention is: a kind of many specifications square tube roll-forming line, and this production line is made up of the reel steel plate strip unwinding rack installed point-blank, steel plate strip guider, steel plate leveling machine, square tube Double Tops limit roll extrusion unit, square tube double side roll extrusion unit, square tube shaping unit, square tube top margin bonding machine, weld seam polishing machine, square tube cooling bath, square tube alignment unit and square tube cut-to-length sizes machine, unwinding rack is equipped with let off roll, steel plate strip guider is arranged on unwinding rack rear end, and steel plate strip guider is made up of perpendicular positioning frame and horizontal location frame, and perpendicular positioning frame is mainly provided with a pair nip rolls, horizontal location frame is mainly provided with lateral register wheel, steel plate leveling machine is installed in horizontal location frame rear end, the frame of steel plate leveling machine is mainly provided with pad roller and hydraulic pressure straightener roll, square tube Double Tops limit roll extrusion unit is installed in the rear end of steel plate leveling machine, square tube Double Tops limit roll extrusion unit is made up of multiple stage square tube Double Tops limit roller press, square tube Double Tops limit roller press is designed with lower shaft and upper axle, lower shaft is provided with two, left and right flanging pad wheel, the Front-end Design of flanging pad wheel is the face of cylinder, rear end is designed to conical flanging inclined-plane, the distance that the intersection of nose circle cylinder taken turns by two flanging inclined-planes, left and right and flanging pad is three times of square tube base width, the width of two upper hems of square tube equals the half of square tube base width respectively, from the roller press of First square tube Double Tops limit, the inclination angle on the conical flanging inclined-plane of the flanging pad wheel rear end of square tube Double Tops limit roller press below increases step by step, in the side of flanging pad wheel, two lower fixed bars and two lower screw mandrels are installed, two lower screw mandrels are connected with lower servomotor by underdrive connector, the axle bed at upper axle two ends is provided with clamping screw, the upper end of clamping screw is connected with top servomotor by top driving member, upper axle is provided with two rolling wheels in left and right, be provided with fixed bar and two upper screw rods on two in the side of rolling wheel, two upper screw rods are connected with upper servomotor by upper driving jockey, square tube double side roll extrusion unit is identical with the unit quantity in square tube Double Tops limit roll extrusion unit, standalone architecture is substantially identical, and the distance that nose circle cylinder intersection taken turns by the flanging inclined-plane of two side flanging pads wheel of square tube double side roller press and flanging pad equals the width on square tube base.
Square tube shaping unit on production line is made up of multiple stage square tube forming machine, be arranged on square tube double side roll extrusion unit rear end, the lower shaft of square tube forming machine is provided with cylindrical pad wheel, above lower shaft, lateral pressure wheel is installed, the support of lateral pressure wheel is provided with middle screw mandrel, middle screw mandrel is connected with servomotor by driving member, axle on being provided with above lateral pressure wheel, upper axle is provided with the upper rolling wheel in two, left and right, be provided with fixed bar and two upper screw rods on two in the side of upper rolling wheel, two upper screw rods are connected with servomotor by driving member.
Square tube top margin bonding machine is arranged on square tube forming machine rear end, square high-frequency welding coil is installed in the front end of square tube top margin bonding machine, the frame of rear end is provided with lower shaft, lower shaft is provided with pad wheel, above lower shaft, lateral pressure wheel is installed, the support of lateral pressure wheel is provided with screw mandrel, screw mandrel is connected with servomotor by driving member, a pair smooth welded seam wheel is installed above lateral pressure wheel, smooth welded seam wheel is symmetrical to be tilted to install, and lower end is close, upper end from, be pressed on the weld seam of square tube, the top of smooth welded seam wheel support is provided with clamping screw; At square tube top margin bonding machine rear end field joint polishing machine, the frame of weld seam polishing machine both sides is provided with polishing roll and lower polishing roll; Be provided with square tube cooling bath in weld seam polishing machine rear end, be provided with fountain head in square tube cooling bath, tail end is provided with hair-dryer.
Square tube alignment unit is arranged on square tube cooling bath rear end, square tube alignment unit forms with reversion straightener by rotating forward straightener, two leveler structures are identical, rotating forward the underlay wheel of straightener, side direction fast pulley and upper pressure wheel is arranged on a rolling disc, the rear rotating shaft of rolling disc is arranged in vertical frame, and rear rotating shaft is connected with the driving member rotating servomotor.
After square tube alignment unit, square tube cut-to-length sizes machine is installed, the front end of square tube cut-to-length sizes machine is provided with positioner, positioner is made up of underlay wheel, side direction fast pulley and upper pressure wheel, and the middle part of cut-to-length sizes machine is provided with fixed length mobile cutter, and rear end is provided with outlet roller.
Because reel steel plate strip unwinding rack, steel plate strip guider, steel plate leveling machine, square tube Double Tops limit roll extrusion unit, square tube double side roll extrusion unit, square tube shaping unit, square tube top margin bonding machine, weld seam polishing machine, square tube cooling bath, square tube alignment unit and square tube cut-to-length sizes machine design point-blank by this production line, this production line can complete disposable for the steel plate roll coil of strip continuous roll extrusion, welds, be corrected into square tube; On this production line, the horizontal range of the rolling wheel of each unit inside and flanging pad wheel can carry out fast accurate adjustment by screw mandrel and servomotor, the Product Precision of this device fabrication is higher, can in order to produce the rectangular steel tube of different size, when the product that replacing production specification is different, the speed that equipment regulates, precision is high, and production efficiency is higher.
Adopt the technical program: the adjustment roll pinch roller in this production line, each unit used and flanging pad wheel horizontal range servomotor be independently, unified control can be carried out, avoid the driving error that can transmission shaft driven be relied on to exist between unit, the precision of whole production line improves greatly; Rotate forward straightener and reversion straightener owing to being designed with in square tube cooling bath rear end, the square tube of production can carry out online torsional alignment, reduces the internal stress of square tube, improves the quality of products.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of square tube Double Tops limit roller press in the present invention.
Fig. 3 is the structural representation of square tube double side roller press in the present invention.
Fig. 4 is the structural representation of square tube shaping unit in the present invention.
Fig. 5 is the structural representation of square tube top margin bonding machine in the present invention.
Detailed description of the invention
Embodiment, as Fig. 1,2,3, shown in 4 and 5, a kind of many specifications square tube roll-forming line, this production line is made up of the reel steel plate strip unwinding rack 1 installed point-blank, steel plate strip guider, steel plate leveling machine 7, square tube Double Tops limit roll extrusion unit, square tube double side roll extrusion unit, square tube shaping unit, square tube top margin bonding machine 31, weld seam polishing machine 34, square tube cooling bath 37, square tube alignment unit and square tube cut-to-length sizes machine 49, let off roll 2 unwinding rack 1 is equipped with, steel plate strip guider is arranged on unwinding rack 1 rear end, and steel plate strip guider is made up of perpendicular positioning frame 3 and horizontal location frame 5, perpendicular positioning frame 3 is mainly provided with a pair nip rolls 4, horizontal location frame 5 is mainly provided with lateral register wheel 6, steel plate leveling machine 7 is installed in horizontal location frame 5 rear end, the frame of steel plate leveling machine 7 is mainly provided with pad roller 9 and hydraulic pressure straightener roll 8, square tube Double Tops limit roll extrusion unit is installed in the rear end of steel plate leveling machine 7, square tube Double Tops limit roll extrusion unit is made up of multiple stage square tube Double Tops limit roller press 18, square tube Double Tops limit roller press 18 is designed with lower shaft 12 and upper axle 15, lower shaft 12 is provided with two, left and right flanging pad wheel 10, the Front-end Design of flanging pad wheel 10 is the face of cylinder 53, rear end is designed to conical flanging inclined-plane 55, the distance that the intersection 54 of nose circle cylinder taken turns by two flanging inclined-planes, left and right 55 and flanging pad is three times of square tube base width, the width of two upper hems 52 of square tube equals the half of square tube base width respectively, from the roller press of First square tube Double Tops limit, the inclination angle that the conical flanging inclined-plane 55 of 10 rear ends taken turns by the flanging pad of square tube Double Tops limit roller press below increases step by step, in the side of flanging pad wheel 10, two lower fixed bars 11 and two lower screw mandrels 13 are installed, two lower screw mandrels 13 are connected with lower servomotor 56 by underdrive connector 57, the axle bed at upper axle 15 two ends is provided with clamping screw 19, the upper end of clamping screw 19 is connected with top servomotor 21 by top driving member 20, upper axle 15 is provided with two rolling wheels 17 in left and right, fixed bar 14 and two upper screw rods, 16, two upper screw rods 16 on two are installed in the side of rolling wheel 17 be connected with upper servomotor 58 by upper driving jockey 59, square tube double side roll extrusion unit is identical with the unit quantity in square tube Double Tops limit roll extrusion unit, standalone architecture is substantially identical, and the distance that nose circle cylinder intersection taken turns by the flanging inclined-plane of two side flanging pads wheel 24 of square tube double side roller press 18 and flanging pad equals the width on square tube base 60.
Square tube shaping unit on production line is made up of multiple stage square tube forming machine 25, be arranged on square tube double side roll extrusion unit rear end, the lower shaft of square tube forming machine 25 is provided with cylindrical pad wheel 29, lateral pressure wheel 27 is installed above lower shaft, the support of lateral pressure wheel 27 is provided with middle screw mandrel 26, middle screw mandrel 26 is connected with servomotor by driving member, above lateral pressure wheel 27, axle is installed, upper axle is provided with the upper rolling wheel in two, left and right, be provided with fixed bar and two upper screw rods on two in the side of upper rolling wheel, two upper screw rods are connected with servomotor by driving member.
Square tube top margin bonding machine 31 is arranged on square tube forming machine 25 rear end, square high-frequency welding coil 30 is installed in the front end of square tube top margin bonding machine 31, the frame of rear end is provided with lower shaft, lower shaft is provided with pad wheel, lateral pressure wheel 27 is installed above lower shaft, the support of lateral pressure wheel 27 is provided with screw mandrel, screw mandrel is connected with servomotor by driving member, a pair smooth welded seam wheel 33 is installed above lateral pressure wheel 27, smooth welded seam wheel 33 is symmetrical to be tilted to install, lower end is close, upper end from, be pressed on the weld seam of square tube 61, the top of smooth welded seam wheel support 32 is provided with clamping screw, at square tube top margin bonding machine 32 rear end field joint polishing machine 34, the frame of weld seam polishing machine 34 both sides is provided with polishing roll 35 and lower polishing roll 36, be provided with square tube cooling bath 37 in weld seam polishing machine 34 rear end, be provided with fountain head 38 in square tube cooling bath 37, tail end is provided with hair-dryer 39.
Square tube alignment unit is arranged on square tube cooling bath 37 rear end, square tube alignment unit forms with reversion straightener 48 by rotating forward straightener 44, two leveler structures are identical, rotating forward the underlay wheel 40 of straightener 44, side direction fast pulley 41 and upper pressure wheel 42 is arranged on a rolling disc 43, the rear rotating shaft 47 of rolling disc 43 is arranged in vertical frame, and rear rotating shaft 47 is connected with the driving member 46 rotating servomotor 45.
After square tube alignment unit, square tube cut-to-length sizes machine 49 is installed, the front end of square tube cut-to-length sizes machine 49 is provided with positioner, positioner is made up of underlay wheel 40, side direction fast pulley 41 and upper pressure wheel 42, the middle part of cut-to-length sizes machine 49 is provided with fixed length mobile cutter 50, and rear end is provided with outlet roller 51.
Claims (5)
1. more than specification square tube roll-forming line, is characterized in that: this production line is made up of the reel steel plate strip unwinding rack (1) installed point-blank, steel plate strip guider, steel plate leveling machine (7), square tube Double Tops limit roll extrusion unit, square tube double side roll extrusion unit, square tube shaping unit, square tube top margin bonding machine (31), weld seam polishing machine (34), square tube cooling bath (37), square tube alignment unit and square tube cut-to-length sizes machine (49), let off roll (2) unwinding rack (1) is equipped with, steel plate strip guider is arranged on unwinding rack (1) rear end, steel plate strip guider is made up of perpendicular positioning frame (3) and horizontal location frame (5), perpendicular positioning frame (3) is mainly provided with a pair nip rolls (4), horizontal location frame (5) is mainly provided with lateral register wheel (6), steel plate leveling machine (7) is installed in horizontal location frame (5) rear end, the frame of steel plate leveling machine (7) is mainly provided with pad roller (9) and hydraulic pressure straightener roll (8), square tube Double Tops limit roll extrusion unit is installed in the rear end of steel plate leveling machine (7), square tube Double Tops limit roll extrusion unit is made up of multiple stage square tube Double Tops limit roller press (18), square tube Double Tops limit roller press (18) is designed with lower shaft (12) and upper axle (15), lower shaft (12) is provided with two, left and right flanging pad wheel (10), the Front-end Design of flanging pad wheel (10) is the face of cylinder (53), rear end is designed to conical flanging inclined-plane (55), two, left and right flanging inclined-plane (55) and the distance of the intersection (54) on the face of cylinder (53) are three times of square tube base width, the width of two upper hems (52) of square tube equals the half of square tube base width respectively, from the roller press of First square tube Double Tops limit, the inclination angle of the conical flanging inclined-plane (55) of flanging pad wheel (10) rear end of square tube Double Tops limit roller press below increases step by step, in the side of flanging pad wheel (10), two lower fixed bars (11) and two lower screw mandrels (13) are installed, two lower screw mandrels (13) are connected with lower servomotor (56) by underdrive connector (57), the axle bed at upper axle (15) two ends is provided with clamping screw (19), the upper end of clamping screw (19) is connected with top servomotor (21) by top driving member (20), upper axle (15) is provided with two rolling wheels (17) in left and right, be provided with two upper fixed bars (14) and two upper screw rods (16) in the side of rolling wheel (17), two upper screw rods (16) are connected with upper servomotor (58) by upper driving jockey (59), square tube double side roll extrusion unit is identical with the unit quantity in square tube Double Tops limit roll extrusion unit, standalone architecture is substantially identical, and two parts are not that two side flanging pads wheel flanging inclined-planes of (24) of square tube double side roller press (18) and the distance of face of cylinder intersection equal the width of square tube base (60).
2. many specifications square tube roll-forming line as claimed in claim 1, it is characterized in that: the square tube shaping unit on production line is arranged on square tube double side roll extrusion unit rear end, be made up of multiple stage square tube forming machine (25), the lower shaft of square tube forming machine (25) is provided with cylindrical pad wheel (29), lateral pressure wheel (27) is installed above lower shaft, the support of lateral pressure wheel (27) is provided with middle screw mandrel (26), middle screw mandrel (26) is connected with servomotor by driving member, in the top of lateral pressure wheel (27), upper axle is installed, upper axle is provided with the upper rolling wheel in two, left and right, fixed bar and two upper screw rods on two are installed in the side of upper rolling wheel, two upper screw rods are connected with servomotor by driving member.
3. many specifications square tube roll-forming line as claimed in claim 1 or 2, it is characterized in that: square tube top margin bonding machine (31) is arranged on square tube forming machine (25) rear end, square high-frequency welding coil (30) is installed in the front end of square tube top margin bonding machine (31), the frame of rear end is provided with lower shaft, lower shaft is provided with pad wheel, lateral pressure wheel (27) is installed above lower shaft, the support of lateral pressure wheel (27) is provided with screw mandrel, screw mandrel is connected with servomotor by driving member, in lateral pressure wheel (27) top, a pair smooth welded seam wheel (33) is installed, smooth welded seam wheel (33) symmetry tilts to install, lower end is close, upper end away from, be pressed on the weld seam of square tube (61), the top of smooth welded seam wheel support (32) is provided with clamping screw, in square tube top margin bonding machine (32) rear end field joint polishing machine (34), the frame of weld seam polishing machine (34) both sides is provided with polishing roll (35) and lower polishing roll (36), be provided with square tube cooling bath (37) in weld seam polishing machine (34) rear end, be provided with fountain head (38) in square tube cooling bath (37), tail end is provided with hair-dryer (39).
4. many specifications square tube roll-forming line as claimed in claim 3, it is characterized in that: square tube alignment unit is arranged on square tube cooling bath (37) rear end, square tube alignment unit by rotate forward straightener (44) and reversion straightener (48) form, two leveler structures are identical, rotate forward underlay wheel (40) of straightener (44), side direction fast pulley (41) and upper pressure wheel (42) are arranged on a rolling disc (43), the rear rotating shaft (47) of rolling disc (43) is arranged in vertical frame, rear rotating shaft (47) is connected with rotation servomotor (45) by driving member (46).
5. many specifications square tube roll-forming line as claimed in claim 4, it is characterized in that: square tube cut-to-length sizes machine (49) is installed after square tube alignment unit, the front end of square tube cut-to-length sizes machine (49) is provided with positioner, positioner is taken turns (40), side direction fast pulley (41) and upper pressure wheel (42) by underlay and is formed, the middle part of cut-to-length sizes machine (49) is provided with fixed length mobile cutter (50), and rear end is provided with outlet roller (51).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510895669.6A CN105458727B (en) | 2015-12-08 | 2015-12-08 | More specification square tube roll-forming lines |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510895669.6A CN105458727B (en) | 2015-12-08 | 2015-12-08 | More specification square tube roll-forming lines |
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| CN105458727A true CN105458727A (en) | 2016-04-06 |
| CN105458727B CN105458727B (en) | 2018-01-09 |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750776A (en) * | 2016-05-17 | 2016-07-13 | 太原重型机械集团工程技术研发有限公司 | Square and rectangular tube pre-welding machine of JCO unit |
| CN107263118A (en) * | 2017-07-20 | 2017-10-20 | 禹州市新光铸造有限公司 | A kind of integrated processing device for pipeline |
| CN108296780A (en) * | 2018-01-29 | 2018-07-20 | 湖州龙溢机械有限公司 | A kind of automobile exhaust pipe process equipment |
| CN108723147A (en) * | 2018-06-20 | 2018-11-02 | 俞鑫怡 | A kind of flexible rolling device of bathroom color steel production line |
| CN108788768A (en) * | 2018-07-05 | 2018-11-13 | 宁波亚大自动化科技有限公司 | A kind of Smart Verify production line and its application method |
| CN110091180A (en) * | 2018-01-31 | 2019-08-06 | 佛山市源锐鑫机械模具有限公司 | A kind of intelligent full-automatic assembly line of stainless steel tube manufacture production |
| CN110125693A (en) * | 2019-05-22 | 2019-08-16 | 肇庆科达机械制造有限公司 | A kind of big specification high alloy automatic production line |
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| CN111113056A (en) * | 2019-12-20 | 2020-05-08 | 浙江万华不锈钢有限公司 | Processing equipment of nonrust steel pipe |
| CN112917171A (en) * | 2020-12-28 | 2021-06-08 | 惠州市佳声包装有限公司 | Automatic forming equipment for square tubes of plastic steel clamping plates |
| CN113546997A (en) * | 2021-08-20 | 2021-10-26 | 张家港市中悦冶金设备科技有限公司 | Roll extrusion precision forming system for distance-adjusting type pipe |
| CN113546998A (en) * | 2021-08-20 | 2021-10-26 | 张家港市中悦冶金设备科技有限公司 | Roll adjustment type roller system and pipe rolling forming device with same |
| CN113601033A (en) * | 2021-09-03 | 2021-11-05 | 山东美峰智能设备有限公司 | Automatic positioning and cutting device and method for linear bearing pipe fitting |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750776A (en) * | 2016-05-17 | 2016-07-13 | 太原重型机械集团工程技术研发有限公司 | Square and rectangular tube pre-welding machine of JCO unit |
| CN107263118A (en) * | 2017-07-20 | 2017-10-20 | 禹州市新光铸造有限公司 | A kind of integrated processing device for pipeline |
| CN108296780A (en) * | 2018-01-29 | 2018-07-20 | 湖州龙溢机械有限公司 | A kind of automobile exhaust pipe process equipment |
| CN110091180A (en) * | 2018-01-31 | 2019-08-06 | 佛山市源锐鑫机械模具有限公司 | A kind of intelligent full-automatic assembly line of stainless steel tube manufacture production |
| CN108723147A (en) * | 2018-06-20 | 2018-11-02 | 俞鑫怡 | A kind of flexible rolling device of bathroom color steel production line |
| CN108788768A (en) * | 2018-07-05 | 2018-11-13 | 宁波亚大自动化科技有限公司 | A kind of Smart Verify production line and its application method |
| CN110125693A (en) * | 2019-05-22 | 2019-08-16 | 肇庆科达机械制造有限公司 | A kind of big specification high alloy automatic production line |
| CN110370030A (en) * | 2019-07-09 | 2019-10-25 | 湖南远东钢模有限公司 | A kind of gearbox drive C-type steel production equipment |
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| CN110355611A (en) * | 2019-08-19 | 2019-10-22 | 河北腾天焊管设备制造有限公司 | Square tube production line |
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Effective date of registration: 20170109 Address after: Yuxi City, Yunnan province 652700 hardware mechanical and electrical characteristics of Tonghai County Park in mountain area Applicant after: YUNNAN TONGHAIFANGYUAN INDUSTRY AND TRADE CO., LTD. Address before: 650600 Yunnan Province, Kunming city Jinning County Industrial Park (opposite the castle base Kunyang Phosphate Mine) Applicant before: YUNNAN LIYUAN METAL INDUSTRY AND TRADE CO., LTD. |
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