CN201253639Y - Fitting structure of die stand and die sleeve for cold drawing steel tube - Google Patents
Fitting structure of die stand and die sleeve for cold drawing steel tube Download PDFInfo
- Publication number
- CN201253639Y CN201253639Y CNU2008201383788U CN200820138378U CN201253639Y CN 201253639 Y CN201253639 Y CN 201253639Y CN U2008201383788 U CNU2008201383788 U CN U2008201383788U CN 200820138378 U CN200820138378 U CN 200820138378U CN 201253639 Y CN201253639 Y CN 201253639Y
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- China
- Prior art keywords
- die
- sleeve
- die sleeve
- seat
- wall
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Abstract
A matching structure of a drawing die seat and a die sleeve for a cold drawing steel tube comprises a drawing die seat and a die sleeve, wherein the inner wall of the drawing die seat forms an inner cavity containing the die sleeve; the outer wall of the die sleeve is tightly attached on the inner wall of the drawing die seat; a mould cavity containing an inner work die and an outer work die is arranged in the die sleeve; the inner wall of the drawing die seat is in a body section hemisphere inner wall shape; the outer wall of the die sleeve is matched with the inner wall shape of the drawing die seat, and is in a body section hemisphere inner wall shape; the drawing die seat is fixedly connected with the die sleeve by a fixing plate; a gap exists between the drawing die seat and the fixing plate; a fixing bolt bar at the gap is sheathed with a gap sleeve; and the inner wall of the mould cavity at the inner mould cavity of the die sleeve is provided with a taper in an opposite control direction. When bending occurs for drawing steel tubes, the straightness of the drawing steel tubes can be regulated through adjusting the relative position of the matching surface between the drawing die seat and the die sleeve according to the bending direction of the drawing steel tubes so as to avoid the accidents that core rods are broken, and realize the purpose of reaching technical requirements of steel tube straightness.
Description
[technical field]
The utility model relates to the mould that adopts in a kind of cold drawing steel tube technology, especially belongs to the fit structure of a kind of cold drawing steel tube with drawing-die seat and die sleeve.
[background technology]
At present, in the cold drawing steel tube production process, employed mould comprises drawing-die seat and die sleeve, drawing-die seat and die sleeve are fixed, Fig. 1 shows the vertical profile structure of die sleeve, and die sleeve 1a periphery is the right angle transition structure, is fixed on the drawing-die seat, the die cavity 2a at die sleeve 1a middle part is used to admit inside and outside work mould, carries out cold drawing steel tube and draws operation.The fit structure of this drawing-die seat and die sleeve, there are the following problems in actual applications: when bending appears in the steel pipe that draws, the operative employee need adopt informal means (for example: hardboard on filling up in die sleeve) adjust, with the school straightness and avoid breaking the plug accident, but, relying on this means, the straight degree of steel pipe does not often reach technological requirement, particularly some are directly spent exigent accurate pipe processing, difficulty is bigger.
[summary of the invention]
For overcoming the problems referred to above that existing technology exists, the utility model aims to provide the fit structure of a kind of cold drawing steel tube of novel structure with drawing-die seat and die sleeve, after drawing-die seat and die sleeve adopt this fit structure, steel pipe is in pulling process, if drawn tube is when straight, can pass through to adjust the relative position between die sleeve and the drawing-die seat easily, thereby realize the straight degree of adjustment work mould and plug, to guarantee the straight degree of drawn tube.
For achieving the above object, the utility model has adopted following technical scheme, this cold drawing steel tube fit structure of drawing-die seat and die sleeve, comprise drawing-die seat and die sleeve, the inwall of drawing-die seat forms an inner chamber of admitting die sleeve, the die sleeve outer wall is close on the inwall of drawing-die seat, die sleeve inside has work mould in the admittance, the work die cavity of mould outward, it is characterized in that: the inwall of drawing-die seat is a section body hemisphere inwall shape, the inner wall shape of the outer wall of die sleeve and drawing-die seat is complementary, be and cut body hemisphere outer wall shape, drawing-die seat and die sleeve are fixed together by a fixed head.
Aforesaid fit structure is characterized in that: be provided with the gap between described drawing-die seat and the fixed head, the gapped cover of cover on the set bolt bar of gap location.
Aforesaid fit structure is characterized in that: the relative draw direction of die cavity inwall of the inner die cavity of described die sleeve has a tapering.The purpose of this tapering is set, and is that the work mould is drawn out when preventing work.
Aforesaid fit structure is characterized in that: drawing-die seat to the outer wall of die sleeve has a filling passage, has a trapped fuel groove on the die sleeve.
Beneficial effect: the cooperation contact-making surface of drawing-die seat and die sleeve, after adopting section body hemisphere inwall shape and cutting body hemisphere outer wall shape fit structure, when bending appears in the steel pipe that draws, can unscrew the adjusting nut on the fixed head easily, then, bending direction according to solid drawn tube, regulate by the relative position of adjusting described drawing-die seat and die sleeve mating surface, locate with the nut on the fixed head again, it is the straight degree of recoverable solid drawn tube, avoid breaking the plug accident, make the straight degree of steel pipe reach technological requirement.
[description of drawings]
Fig. 1 is the vertical section structure schematic diagram of prior art die sleeve.
Fig. 2 is the vertical section structure schematic diagram of an embodiment of the utility model.
Among the figure: drawing-die seat 1, gap 2, fixing threaded hole 3, positioning screw hole 4, fixed head mesopore 5, die cavity inwall 6, die sleeve 7, die cavity 8, fixed head 9, inwall 10, tank filler sleeve 11, trapped fuel groove 12.
[specific embodiment]
Referring to Fig. 2.The inwall 10 of drawing-die seat 1 forms an inner chamber of admitting die sleeve 7, and the inwall of die sleeve 7 is close on the inwall 10 of drawing-die seat 1.Die sleeve 7 inside have a die cavity 8 of admitting inside and outside work mould, the die cavity inwall 6 relative draw direction of die cavity 8 have a tapering, illustrate that just die cavity inwall 6 is oblique shape, and the work external mold matches, the purpose of this tapering is set, and is that the work mould is drawn out when preventing work.The utility model is the innovation part of prior art: the inwall 10 of drawing-die seat 1, and in the variation of the outer wall shape of the die sleeve 7 that is complementary with described inwall 10, the inventor is designed to cut body hemisphere inwall shape with the inwall 10 of drawing-die seat 1, the outer wall of die sleeve 7 is designed to cut body hemisphere outer wall shape, both joint faces are in contact with one another with arcwall face, and this fit structure can change both relative positions very easily.When bending appears in the steel pipe that draws, unscrew the adjusting nut on the fixed head 9 earlier, then, according to the bending direction of solid drawn tube,, finish position adjustments to the work mould by adjusting the relative position of described drawing-die seat 1 and die sleeve 7 mating surfaces, locate with the nut on the fixed head 9 again after regulating, be the straight degree of recoverable solid drawn tube, avoid breaking the plug accident, make the straight degree of steel pipe reach technological requirement.Fixed head mesopore 5 is for admitting plug setting, plug end steady job internal mold.
Be provided with gap 2 between drawing-die seat 1 and the fixed head 9, when set bolt fixes through fixing threaded hole 3, the gapped cover of cover on the shank of bolt at position, gap, the purpose that this gap cover is set is: guaranteeing has certain adjusting gap between fixed head 9 and the die sleeve 7, make bolt can effectively realize die sleeve 7 is regulated, located and fixes through positioning screw hole 4.
Drawing-die seat 1 to the outer wall of die sleeve 7 is provided with a filling passage, and after establishing a trapped fuel groove on the die sleeve, lubricating oil can enter spherical mating surface by the tank filler sleeve 11 of filling passage, use spherical to be lubricated, simultaneously, outer surface at mould also is provided with the trapped fuel groove, and existing lubrication has the oil cooling cooling-down effect again.
Claims (4)
1, a kind of cold drawing steel tube fit structure of drawing-die seat and die sleeve, comprise drawing-die seat (1) and die sleeve (7), the inwall (10) of drawing-die seat (1) forms an inner chamber of admitting die sleeve (7), die sleeve (7) outer wall is close on the inwall (10) of drawing-die seat (1), die sleeve (7) inside has work mould in the admittance, the die cavity (8) of outer work mould, it is characterized in that: the inwall (10) of drawing-die seat (1) is a section body hemisphere inwall shape, inwall (10) shape of the outer wall of die sleeve (7) and drawing-die seat (1) is complementary, be and cut body hemisphere outer wall shape, drawing-die seat (1) and die sleeve (7) are fixed together by a fixed head (9).
2, fit structure as claimed in claim 1 is characterized in that: be provided with the gap between described drawing-die seat (1) and the fixed head (9), the gapped cover of cover on the set bolt bar of gap location.
3, fit structure as claimed in claim 1 is characterized in that: the die cavity inwall (6) of the inner die cavity of described die sleeve (7) (8) draw direction relatively has a tapering.
4, as claim 1 or 3 described fit structures, it is characterized in that: drawing-die seat (1) to the outer wall of die sleeve (7) has a filling passage, has a trapped fuel groove (12) on the die sleeve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201383788U CN201253639Y (en) | 2008-09-17 | 2008-09-17 | Fitting structure of die stand and die sleeve for cold drawing steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201383788U CN201253639Y (en) | 2008-09-17 | 2008-09-17 | Fitting structure of die stand and die sleeve for cold drawing steel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201253639Y true CN201253639Y (en) | 2009-06-10 |
Family
ID=40736954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201383788U Expired - Fee Related CN201253639Y (en) | 2008-09-17 | 2008-09-17 | Fitting structure of die stand and die sleeve for cold drawing steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201253639Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811139A (en) * | 2010-04-23 | 2010-08-25 | 东莞市科力钢铁线材有限公司 | Spherical rolling mould device |
| CN102248021A (en) * | 2011-06-24 | 2011-11-23 | 浙江伦宝金属管业有限公司 | Cold-drawing steel tube mould base |
-
2008
- 2008-09-17 CN CNU2008201383788U patent/CN201253639Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811139A (en) * | 2010-04-23 | 2010-08-25 | 东莞市科力钢铁线材有限公司 | Spherical rolling mould device |
| CN102248021A (en) * | 2011-06-24 | 2011-11-23 | 浙江伦宝金属管业有限公司 | Cold-drawing steel tube mould base |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20160917 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |