CN104174794B - Thread rolling machine blank conveying mechanism - Google Patents
Thread rolling machine blank conveying mechanism Download PDFInfo
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- CN104174794B CN104174794B CN201410353653.8A CN201410353653A CN104174794B CN 104174794 B CN104174794 B CN 104174794B CN 201410353653 A CN201410353653 A CN 201410353653A CN 104174794 B CN104174794 B CN 104174794B
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Abstract
The present invention relates to a kind of thread rolling machine blank conveying mechanism.It solve the technical problems such as existing thread rolling machine blank conveying weak effect.Comprise support body, feeding casing, dog-house, manhole, wear-resisting spacer ring and barrel, the opening end of barrel is towards manhole, and the opening end of barrel and wear-resisting spacer ring mutually against, barrel is connected with driving mechanism, barrel week is provided with some material scraping plates to the inside, each material scraping plate end is all bent to form the scraper portion be obliquely installed to same direction, the conveying with transfer passage is equipped with in feeding casing, conveying one end extends to barrel inside, the other end is tilted to lower setting, the one end being positioned at barrel at conveying is provided with material guide structure.The advantage of this thread rolling machine blank conveying mechanism is: carry effective, operating efficiency is high, not easily blocks in blank course of conveying, and cylinder installs good stability, box for feeding odd body not easy to wear when cylinder rotates, and cylinder rotates smooth and easy.
Description
Technical field
The invention belongs to mechanical equipment technical field, relate to thread rolling machine, especially relate to a kind of thread rolling machine blank conveying mechanism.
Background technology
Thread rolling machine is a kind of equipment of professional production screw thread, and its main operational principle is the screw plate by two pieces with identical and identical with bolt thread thread form, when two pieces of screw plates move mutually, the bolt blank between two screw plates is rubbed screw thread.The conveying of bolt blank common in thread rolling machine has various ways, such as carry out feeding by vibrations hopper, its principle is, by vibration, bolt blank is outwards rotated, thus fall in guide rail and carry, but this mode also exists many deficiencies: such as, noise is large, service life is short, high in cost of production etc.
In order to solve prior art Problems existing, people have carried out long-term exploration, propose solution miscellaneous.Such as, Chinese patent literature discloses a kind of automatic feeding mechanism for thread rolling machine [application number: 98217653.8], by frame, hopper, tipping bucket plate, hopper guide rail, the moving runner realizing feeding, realization order guide control wheel and drive their pivotal band Moving plates I and band Moving plate II etc. to form.The utility model utilizes the continuous revolution of moving runner to be drawn together by workpiece to be conveyed into hopper guide rail and freely glides and runs to thread rolling machine and realize self-feeding object.
Such scheme improves the subproblem that prior art exists to a certain extent, such as noise large problem during vibrating bunker conveying, but still still also exist in scheme: poor stability, inefficiency, conveying weak effect, the technical problem such as easily to block in blank course of conveying.
Summary of the invention
The object of the invention is for the problems referred to above, provide a kind of reasonable in design, structure is simple, carries effective thread rolling machine blank conveying mechanism.
For achieving the above object, present invention employs following technical proposal: this thread rolling machine blank conveying mechanism, comprise support body, described support body is provided with inside and has chamber and feeding casing for depositing blank, described feeding casing upper end has opening, feeding casing is provided with dog-house, the manhole be connected with chamber is provided with in feeding casing side, it is characterized in that, described box for feeding odd side portion is provided with by location structure that to be positioned at manhole peripheral and in circular wear-resisting spacer ring, barrel is cylindrically provided with outside described manhole, described barrel open at one end, the other end is closed, and the opening end of described barrel is towards manhole, and the opening end of described barrel and wear-resisting spacer ring mutually against, described barrel is connected with and can head roll body circumference rotates and the driving mechanism be arranged on support body, described barrel week is provided with some material scraping plates to the inside, each material scraping plate end is all bent to form the scraper portion be obliquely installed to same direction, the conveying with transfer passage is equipped with in described feeding casing, described conveying one end extends to barrel inside, the other end is tilted to lower setting, the one end being positioned at barrel at conveying is provided with the material guide structure that blank can be guided to transfer passage.In this structure, blank enters in feeding casing from dog-house, drive barrel circumference to rotate by driving mechanism thus drive material scraping plate to deliver in material guide structure by blank, by material guide structure, blank is entered in transfer passage to carry, due to barrel against be arranged on wear-resisting spacer ring makes barrel rotate time box for feeding odd body not easy to wear.
In above-mentioned thread rolling machine blank conveying mechanism, described conveying comprises two guide-rail plates arranged in parallel, forms above-mentioned transfer passage inside the blind end that described guide-rail plate extends to barrel between described guide-rail plate.Namely two guide-rail plates are from being arranged on the tilted downward setting of barrel.
In above-mentioned thread rolling machine blank conveying mechanism, described material guide structure comprises and being connected and the stock guide be obliquely installed with guide-rail plate end winding support respectively, and described stock guide is symmetrically set and lays respectively at the both sides of transfer passage.When blank falls between two stock guides, due to stock guide symmetrically and be obliquely installed and make blank automatically enter transfer passage.
In above-mentioned thread rolling machine blank conveying mechanism, described material scraping plate end winding support is arranged on barrel inwall and circumference is uniformly distributed setting, and described material scraping plate is connected as a single entity with scraper portion and material scraping plate is all connected with the inner side of barrel blind end with the side in scraper portion.This structure makes material scraping plate be connected firmly, and not easily occurs obscission.
In above-mentioned thread rolling machine blank conveying mechanism, described flushes with manhole outer circumferential in wear-resisting spacer ring week to the inside mutually, described wear-resisting spacer ring week has taper surface to the inside and the internal diameter of one end that leans of described wear-resisting spacer ring and manhole to the internal diameter of the other end becomes large gradually.Be convenient to blank enter in barrel in manhole.
In above-mentioned thread rolling machine blank conveying mechanism, described feeding bottom half is provided with inclined guide plate, and described inclined guide plate one end is arranged on the lower end of manhole, and the other end tilts upward the below extending to conveying.Obviously, inclined guide plate makes blank automatically to enter in barrel in feeding casing.
In above-mentioned thread rolling machine blank conveying mechanism, described location structure comprises some locating holes being arranged on wear-resisting spacer ring outer circumferential, described feeding casing is provided with some with locating hole mating holes one to one, and described locating hole is connected with mating holes by bolt; Described locating hole comprises and being arranged on wear-resisting spacer ring and first cylindrical hole of the one end leant with barrel, the first described cylindrical hole end is connected with bellmouth and the second cylindrical hole in turn, and the diameter of one end that is connected with the first cylindrical hole of described bellmouth to the diameter of the other end diminishes gradually.Make bolt to expose locating hole, make the rotation of barrel more smooth and easy.
In above-mentioned thread rolling machine blank conveying mechanism, described driving mechanism comprises the drive motors be arranged on support body, described drive motors is connected with the rotating shaft in the reduction box that is arranged on support body, and described rotating shaft is connected with barrel blind end by fixed structure; Described fixed structure comprises the mount pad being arranged on barrel blind end center, and described mount pad center has installing hole, and described rotating shaft to insert in installing hole and on mount pad, is provided with the stop pin that rotating shaft can be fixed in installing hole; Described rotating shaft and mount pad are all coaxially arranged with barrel.As preferably, when there is gap between wear-resisting spacer ring and barrel, the position of adjustment reduction box can be passed through thus gap is eliminated.
In above-mentioned thread rolling machine blank conveying mechanism, the top of described conveying and the outside being positioned at feeding casing is provided with the delivery wheel corresponding with transfer passage, described delivery wheel is provided with turning cylinder, and described turning cylinder is connected with drive motors by belt pulley.Blank is not easily blocked in transfer passage, blank is carried more smooth and easy, steadily.
In above-mentioned thread rolling machine blank conveying mechanism, described feeding casing is provided with the locating piece be positioned at below wear-resisting spacer ring, and described locating piece is provided with the arcwall face matched with wear-resisting spacer ring, and described wear-resisting spacer ring is against being arranged on arcwall face; Also hingedly on described feeding casing to be provided with for the cover plate by closure of openings.Preferably, locating piece here and box for feeding odd are connected as a single entity, and wear-resisting spacer ring is resisted against on locating piece and can prevents wear-resisting spacer ring from producing shifting phenomena due to Action of Gravity Field, this avoid barrel and departs from wear-resisting spacer ring.
Compared with prior art, the advantage of this thread rolling machine blank conveying mechanism is: reasonable in design, structure is simple, and carry effective, operating efficiency is high, not easily block in blank course of conveying, cylinder installs good stability, and box for feeding odd body not easy to wear when cylinder rotates, not easily occurs gap between cylinder and feeding casing, cylinder rotates smooth and easy, long service life.
Accompanying drawing explanation
Fig. 1 is structural representation provided by the invention.
Fig. 2 is the structural representation at another visual angle provided by the invention.
Fig. 3 is partial structurtes schematic diagram provided by the invention.
Fig. 4 is backsight structural representation provided by the invention.
Fig. 5 is the sectional view of wear-resisting spacer ring provided by the invention.
In figure, support body 1, feeding casing 2, opening 21, dog-house 22, manhole 23, inclined guide plate 24, locating piece 25, arcwall face 26, cover plate 27, location structure 3, locating hole 31, first cylindrical hole 311, bellmouth 312, second cylindrical hole 313, bolt 32, wear-resisting spacer ring 4, taper surface 41, barrel 5, material scraping plate 51, scraper portion 511, driving mechanism 6, drive motors 61, reduction box 62, rotating shaft 63, mount pad 64, installing hole 65, stop pin 66, conveying 7, transfer passage 71, guide-rail plate 72, material guide structure 8, stock guide 81, delivery wheel 9, turning cylinder 91.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As Figure 1-3, this thread rolling machine blank conveying mechanism, comprise support body 1, support body 1 is provided with inside and has chamber and feeding casing 2 for depositing blank, feeding casing 2 upper end has opening 21, feeding casing 2 is provided with dog-house 22, the manhole 23 be connected with chamber is provided with in feeding casing 2 side, feeding casing 2 sidepiece is provided with by location structure 3 that to be positioned at manhole 23 peripheral and in circular wear-resisting spacer ring 4, barrel 5 is cylindrically provided with outside manhole 23, barrel 5 open at one end, the other end is closed, and the opening end of barrel 5 is towards manhole 23, and the opening end of barrel 5 and wear-resisting spacer ring 4 mutually against, barrel 5 is connected with and can head roll body 5 circumference rotates and the driving mechanism 6 be arranged on support body 1, barrel is provided with some material scraping plates 51 for 5 weeks to the inside, each material scraping plate 51 end is all bent to form the scraper portion 511 be obliquely installed to same direction, the conveying 7 with transfer passage 71 is equipped with in feeding casing 2, it is inner that conveying 7 one end extends to barrel 5, the other end is tilted to lower setting, the one end being positioned at barrel 5 at conveying 7 is provided with the material guide structure 8 that blank can be guided to transfer passage 71, namely blank enters in feeding casing 2 from dog-house 22, drive barrel 5 circumference to rotate by driving mechanism 6 thus drive material scraping plate 51 to deliver in material guide structure 8 by blank, by material guide structure 8, blank is entered in transfer passage 71 to carry, due to barrel 5 against be arranged on wear-resisting spacer ring 4 makes barrel 5 rotate time box for feeding odd body 2 not easy to wear.
Preferably, conveying 7 in the present embodiment comprises two guide-rail plates 72 arranged in parallel, form above-mentioned transfer passage 71 between guide-rail plate 72 inside the blind end that guide-rail plate 72 extends to barrel 5, namely two guide-rail plates 72 are from being arranged on the tilted downward setting of barrel 5.Wherein, material guide structure 8 comprises and being connected and the stock guide 81 be obliquely installed with guide-rail plate 72 end winding support respectively, stock guide 81 is symmetrically set and lays respectively at the both sides of transfer passage 71, when blank falls between two stock guides 81, due to stock guide 81 symmetrically and be obliquely installed and make blank automatically enter transfer passage 71.Here material scraping plate 51 end winding support is arranged on barrel 5 inwall and circumference is uniformly distributed setting, material scraping plate 51 is connected as a single entity with scraper portion 511 and material scraping plate 51 is all connected with the inner side of barrel 5 blind end with the side in scraper portion 511, this structure makes material scraping plate 51 be connected firmly, and not easily occurs obscission.
In addition, inclined guide plate 24 is provided with bottom feeding casing 2, and inclined guide plate 24 one end is arranged on the lower end of manhole 23, the other end tilts upward the below extending to conveying 7, and inclined guide plate 24 makes blank automatically to enter in barrel 5 in feeding casing 2.The top of the conveying 7 and outside being positioned at feeding casing 2 is provided with the delivery wheel 9 corresponding with transfer passage 71, delivery wheel 9 is provided with turning cylinder 91, and turning cylinder 91 is connected with drive motors 61 by belt pulley, blank is not easily blocked in transfer passage 71, blank is carried more smooth and easy, steadily.
As shown in Fig. 1, Fig. 4 and Fig. 5, enter in barrel 5 for the ease of blank in manhole 23, wear-resisting spacer ring flushes with manhole 23 outer circumferential for 4 weeks to the inside mutually, and wear-resisting spacer ring has taper surface 41 to the inside in 4 weeks and the internal diameter of one end that leans of wear-resisting spacer ring 4 and manhole 23 to the internal diameter of the other end becomes large gradually.Here location structure 3 comprises some locating holes 31 being arranged on wear-resisting spacer ring 4 outer circumferential, and feeding casing 2 is provided with some with locating hole 31 mating holes one to one, and locating hole 31 is connected with mating holes by bolt 32; Locating hole 31 comprises and being arranged on wear-resisting spacer ring 4 and first cylindrical hole 311 of the one end leant with barrel 5, first cylindrical hole 311 end is connected with bellmouth 312 and the second cylindrical hole 313 in turn, and the diameter of one end that is connected with the first cylindrical hole 311 of bellmouth 312 to the diameter of the other end diminishes gradually, make bolt 32 can not expose locating hole 31, make the rotation of barrel 5 more smooth and easy.
Further, driving mechanism 6 here comprises the drive motors 61 be arranged on support body 1, and drive motors 61 is connected with the rotating shaft 63 in the reduction box 62 that is arranged on support body 1, and rotating shaft 63 is connected with barrel 5 blind end by fixed structure; Fixed structure comprises the mount pad 64 being arranged on barrel 5 blind end center, and mount pad 64 center has installing hole 65, and rotating shaft 63 to insert in installing hole 65 and on mount pad 64, is provided with the stop pin 66 that rotating shaft 63 can be fixed in installing hole 65; Rotating shaft 63 and mount pad 64 are all coaxially arranged with barrel 5, as preferably, when there is gap between wear-resisting spacer ring 4 and barrel 5, can pass through the position of adjustment reduction box 62 thus be eliminated in gap.
In addition, feeding casing 2 is here provided with the locating piece 25 be positioned at below wear-resisting spacer ring 4, and locating piece 25 is provided with the arcwall face 26 matched with wear-resisting spacer ring 4, and wear-resisting spacer ring 4 is against being arranged on arcwall face 26; The also hinged cover plate 27 be provided with for opening 21 is closed on feeding casing 2, preferably, here locating piece 25 is connected as a single entity with box for feeding odd 2, wear-resisting spacer ring 4 is resisted against on locating piece 25 and can prevents wear-resisting spacer ring 4 from producing shifting phenomena due to Action of Gravity Field, this avoid barrel 5 and departs from wear-resisting spacer ring 4.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ support body 1 herein, feeding casing 2, opening 21, dog-house 22, manhole 23, inclined guide plate 24, locating piece 25, arcwall face 26, cover plate 27, location structure 3, locating hole 31, first cylindrical hole 311, bellmouth 312, second cylindrical hole 313, bolt 32, wear-resisting spacer ring 4, taper surface 41, barrel 5, material scraping plate 51, scraper portion 511, driving mechanism 6, drive motors 61, reduction box 62, rotating shaft 63, mount pad 64, installing hole 65, stop pin 66, conveying 7, transfer passage 71, guide-rail plate 72, material guide structure 8, stock guide 81, delivery wheel 9, term such as turning cylinder 91 grade, but do not get rid of the possibility using other term.Use these terms to be only used to describe and explain essence of the present invention more easily, the restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (10)
1. a thread rolling machine blank conveying mechanism, comprise support body (1), described support body (1) is provided with inside and has chamber and feeding casing (2) for depositing blank, described feeding casing (2) upper end has opening (21), feeding casing (2) is provided with dog-house (22), the manhole (23) be connected with chamber is provided with in feeding casing (2) side, it is characterized in that, described feeding casing (2) sidepiece is provided with by location structure (3) that to be positioned at manhole (23) peripheral and in circular wear-resisting spacer ring (4), described manhole (23) outside is provided with barrel (5) cylindrically, described barrel (5) open at one end, the other end is closed, and the opening end of described barrel (5) is towards manhole (23), and the opening end of described barrel (5) and wear-resisting spacer ring (4) mutually against, described barrel (5) is connected with and can head roll body (5) circumference rotates and the driving mechanism (6) be arranged on support body (1), described barrel (5) week is provided with some material scraping plates (51) to the inside, each material scraping plate (51) end is all bent to form the scraper portion (511) be obliquely installed to same direction, the conveying (7) with transfer passage (71) is equipped with in described feeding casing (2), it is inner that described conveying (7) one end extends to barrel (5), the other end is tilted to lower setting, the one end being positioned at barrel (5) at conveying (7) is provided with the material guide structure (8) that blank can be guided to transfer passage (71).
2. thread rolling machine blank conveying mechanism according to claim 1, it is characterized in that, described conveying (7) comprises two guide-rail plates (72) arranged in parallel, forms above-mentioned transfer passage (71) inside the blind end that described guide-rail plate (72) extends to barrel (5) between described guide-rail plate (72).
3. thread rolling machine blank conveying mechanism according to claim 2, it is characterized in that, described material guide structure (8) comprises and being connected and the stock guide be obliquely installed (81) with guide-rail plate (72) end winding support respectively, and described stock guide (81) is symmetrically set and lays respectively at the both sides of transfer passage (71).
4. thread rolling machine blank conveying mechanism according to claim 1, it is characterized in that, described material scraping plate (51) end winding support is arranged on barrel (5) inwall and circumference is uniformly distributed setting, and described material scraping plate (51) is connected as a single entity with scraper portion (511) and material scraping plate (51) is all connected with the inner side of barrel (5) blind end with the side of scraper portion (511).
5. the thread rolling machine blank conveying mechanism according to claim 1 or 2 or 3 or 4, it is characterized in that, described wear-resisting spacer ring (4) week flushes mutually with manhole (23) outer circumferential to the inside, described wear-resisting spacer ring (4) week has taper surface (41) to the inside and the internal diameter of one end that leans of described wear-resisting spacer ring (4) and manhole (23) to the internal diameter of the other end becomes large gradually.
6. thread rolling machine blank conveying mechanism according to claim 5, it is characterized in that, described feeding casing (2) bottom is provided with inclined guide plate (24), and described inclined guide plate (24) one end is arranged on the lower end of manhole (23), the other end tilts upward the below extending to conveying (7).
7. thread rolling machine blank conveying mechanism according to claim 5, it is characterized in that, described location structure (3) comprises some locating holes (31) being arranged on wear-resisting spacer ring (4) outer circumferential, described feeding casing (2) is provided with some with locating hole (31) mating holes one to one, and described locating hole (31) is connected with mating holes by bolt (32); Described locating hole (31) comprises and is arranged on upper and first cylindrical hole (311) of the one end leant with barrel (5) of wear-resisting spacer ring (4), described the first cylindrical hole (311) end is connected with bellmouth (312) and the second cylindrical hole (313) in turn, and the diameter of one end that is connected with the first cylindrical hole (311) of described bellmouth (312) to the diameter of the other end diminishes gradually.
8. thread rolling machine blank conveying mechanism according to claim 5, it is characterized in that, described driving mechanism (6) comprises the drive motors (61) be arranged on support body (1), described drive motors (61) is connected with the rotating shaft (63) in the reduction box (62) that is arranged on support body (1), and described rotating shaft (63) is connected with barrel (5) blind end by fixed structure; Described fixed structure comprises the mount pad (64) being arranged on barrel (5) blind end center, described mount pad (64) center has installing hole (65), and described rotating shaft (63) to insert in installing hole (65) and on mount pad (64), is provided with the stop pin (66) that rotating shaft (63) can be fixed in installing hole (65); Described rotating shaft (63) and mount pad (64) are all coaxially arranged with barrel (5).
9. thread rolling machine blank conveying mechanism according to claim 8, it is characterized in that, the top of described conveying (7) and the outside being positioned at feeding casing (2) is provided with the delivery wheel (9) corresponding with transfer passage (71), described delivery wheel (9) is provided with turning cylinder (91), and described turning cylinder (91) is connected with drive motors (61) by belt pulley.
10. thread rolling machine blank conveying mechanism according to claim 1, it is characterized in that, described feeding casing (2) is provided with the locating piece (25) being positioned at wear-resisting spacer ring (4) below, described locating piece (25) is provided with the arcwall face (26) matched with wear-resisting spacer ring (4), and described wear-resisting spacer ring (4) is against being arranged on arcwall face (26); The upper also hinged cover plate (27) be provided with for opening (21) is closed of described feeding casing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410353653.8A CN104174794B (en) | 2014-07-23 | 2014-07-23 | Thread rolling machine blank conveying mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410353653.8A CN104174794B (en) | 2014-07-23 | 2014-07-23 | Thread rolling machine blank conveying mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104174794A CN104174794A (en) | 2014-12-03 |
| CN104174794B true CN104174794B (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410353653.8A Expired - Fee Related CN104174794B (en) | 2014-07-23 | 2014-07-23 | Thread rolling machine blank conveying mechanism |
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| CN (1) | CN104174794B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5689346A (en) * | 1979-12-20 | 1981-07-20 | Akira Ninomiya | Thread rolling machine automatic type |
| CN201008930Y (en) * | 2007-02-13 | 2008-01-23 | 何伦 | Automatic non-head vertical roll feeding mechanism for thread rolling machine |
| CN201201026Y (en) * | 2007-11-27 | 2009-03-04 | 海盐永固工模具有限责任公司 | Adjustable mechanism for feeding nail blank of thread rolling machine |
| EP2135692A1 (en) * | 2008-06-19 | 2009-12-23 | Ingramatic S.p.A. | Rolling machine with a machined-workpiece unloading device |
| CN201423422Y (en) * | 2009-06-09 | 2010-03-17 | 陈显国 | Feeding device of thread rolling machine |
| CN203955981U (en) * | 2014-07-23 | 2014-11-26 | 浙江科佳机械有限公司 | Thread rolling machine blank conveying mechanism |
-
2014
- 2014-07-23 CN CN201410353653.8A patent/CN104174794B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5689346A (en) * | 1979-12-20 | 1981-07-20 | Akira Ninomiya | Thread rolling machine automatic type |
| CN201008930Y (en) * | 2007-02-13 | 2008-01-23 | 何伦 | Automatic non-head vertical roll feeding mechanism for thread rolling machine |
| CN201201026Y (en) * | 2007-11-27 | 2009-03-04 | 海盐永固工模具有限责任公司 | Adjustable mechanism for feeding nail blank of thread rolling machine |
| EP2135692A1 (en) * | 2008-06-19 | 2009-12-23 | Ingramatic S.p.A. | Rolling machine with a machined-workpiece unloading device |
| CN201423422Y (en) * | 2009-06-09 | 2010-03-17 | 陈显国 | Feeding device of thread rolling machine |
| CN203955981U (en) * | 2014-07-23 | 2014-11-26 | 浙江科佳机械有限公司 | Thread rolling machine blank conveying mechanism |
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| Publication number | Publication date |
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| CN104174794A (en) | 2014-12-03 |
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Granted publication date: 20160309 Termination date: 20160723 |