CN203510694U - Thread removing mechanism of mould and blowing mould comprising same - Google Patents
Thread removing mechanism of mould and blowing mould comprising same Download PDFInfo
- Publication number
- CN203510694U CN203510694U CN201320557640.3U CN201320557640U CN203510694U CN 203510694 U CN203510694 U CN 203510694U CN 201320557640 U CN201320557640 U CN 201320557640U CN 203510694 U CN203510694 U CN 203510694U
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- mould
- main shaft
- thread
- screw thread
- coolant jacket
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Abstract
The utility model relates to a thread removing mechanism of a mould and a blowing mould comprising the same. The mechanism comprises a main shaft (26), a thread generating device (40) used for generating a thread (12) on a workpiece (10), and an outer lining (24) which is coaxial with the main shaft (26) and fixedly arranged on a mould, wherein the main shaft can rotate around the axis (X), the thread generating device is fixedly connected with the far end of the main shaft, the outer lining is coaxially fixed with a retreating barrel (42), a part of the outer surface of the main shaft is provided with an outer thread, the retreating barrel and the outer thread are matched with each other to enable the thread generating device to axially move in a retracting way to the near end of the main shaft along the axis when the main shaft rotates around the axis, and the outer lining is internally remained with a space (46) in which the thread generating device can be completely separated from the thread on the workpiece along the retracting direction. The thread generating device can axially retract when the mould is opened, so that the threw on the workpiece can not be broken in a pulling way by violence when the plane in which the thread of the workpiece is positioned is not perpendicular to the mould opening direction.
Description
Technical field
The utility model relates to a kind of de-thread mechanism of mould and comprises the blow mold of this mechanism.
Background technology
Due to the weight of plastics gentlier and easier molded complicated shape, so the fuel tank of motor vehicle is made of plastics more and more.Plastic fuel tank adopts blow molding process to make conventionally.The screw thread of the pump seal mouth of fuel tank is also generally by the screw thread generation device of blow mold, to be formed in blowing process.After blowing completes, carry out die sinking, now need to make by means of de-thread mechanism the screw thread disengaging of screw thread generation device and pump seal mouth, and then realize the separated of fuel cell canister and blow mold.
Fig. 3 shows de-thread mechanism of the prior art.This mechanism comprise main shaft 26, on fuel tank 10, produce screw thread 12 screw thread generation device 40 and by bearing 28 and main shaft 26 coaxially arranged be fixed on the external bushing 24 on mould, wherein main shaft 26 can be rotated around its axis X, and screw thread generation device 40 is fixedly attached to the far-end of main shaft 26.This de-thread mechanism is only applicable to the conventional fuel case shown in shop drawings 1, and wherein, the screw thread 12 of pump seal mouth is axial consistent with die sinking direction D(and main shaft 26 in one) in vertical plane P 1.This is because when die sinking, screw thread generation device 40 can only rotate around axis X, simultaneously along with mould retreats along die sinking direction D together.Due to die sinking direction, D is consistent with axis X direction, and screw thread generation device 40 can successfully be deviate from from the screw thread 12 of fuel tank, and can not destroy screw thread 12.
But, as shown in Figure 2, in some high-end vehicles, be limited by the restriction of car body environment, the pump seal mouth screw thread of fuel tank be in one with die sinking direction D off plumb plane P 2 on.Therefore, die sinking direction D and pump seal mouth screw thread axially, the axis X direction of the main shaft 26 of de-thread mechanism is inconsistent, but angled.If still adopt the de-thread mechanism shown in Fig. 3, during die sinking, can to the pump seal mouth screw thread of fuel tank, cause damage due to oblique tractive, thereby make obtained finished product fuel tank quality low.
Utility model content
The purpose of this utility model is to provide a kind of de-thread mechanism of mould, and this mechanism can make screw thread generation device in rotation, realize retraction in the axial direction.
Above-mentioned purpose of the present utility model realizes by the following technical programs: the de-thread mechanism of this mould comprises main shaft, for produce the screw thread generation device of screw thread on product, and with described main shaft coaxially arranged be fixed on the external bushing on described mould, wherein said main shaft can be rotated around its axis, described screw thread generation device is fixedly attached to the far-end of described main shaft, in described external bushing, be fixed with coaxially the swivel nut of beating a precipitate retreat, described main shaft is provided with external screw thread on a part of outer surface, the described swivel nut of beating a precipitate retreat coordinates with described external screw thread and makes to move when the near-end of screw thread generation device along described axis to described main shaft described in described main shaft is during around the rotation of described axis carries out axial retraction, and leave and be enough to the space that the screw thread on the described screw thread generation device of confession and described product departs from completely in the inherent retraction direction of external bushing.
Benefit of the present utility model is, owing to being fixed with the swivel nut of beating a precipitate retreat in external bushing, between its internal thread and the external screw thread on main shaft, cooperatively interact, the screw thread generation device that makes main shaft and be fixed to main shaft is realized axial retraction motion in rotation, thereby has avoided die sinking direction and the product thread spindle oblique tractive of screw thread generation device to product screw thread when inconsistent.Even therefore when product screw thread be positioned at die sinking direction off plumb clinoplain on time, also can obtain the high quality of products screw thread that appearance is bright and clean, size is qualified.
This de-thread mechanism can also comprise one or more in following technical characterictic in addition:
The pitch of described screw thread generation device with described in the beat a precipitate retreat pitch of swivel nut identical.
Described mould is blow mold.
Described product is the fuel tank of vehicle.
Described screw thread generation device is on described fuel tank, to produce externally threaded threaded cup.
The described swivel nut of beating a precipitate retreat is made by beryllium copper.
Near-end at described main shaft is also provided with coolant jacket axial restraint, in described coolant jacket, be provided with respectively the cooling fluid admission passage and the cooling fluid that communicate with cool cycles passage in described main shaft and flow out passage, and be provided with sealing ring between described coolant jacket and described main shaft.
In the side of described coolant jacket, be fixed with coolant jacket guide pad, described coolant jacket guide pad can endwisely slip along described axis in the guide rail being mated, and described guide rail is fixed on described mould.The guider arranging in the side of coolant jacket can provide good lateral support for coolant jacket, and assurance coolant jacket is in real time concentric with main shaft, thereby reduces the wearing and tearing of sealing ring, the service life of greatly improving sealing ring.Due to without changing continually sealing ring, thereby reduce production downtime, improved production efficiency.
Described coolant jacket guide pad is made by beryllium copper.Therefore beryllium copper has good heat radiation and greasy property, can avoid coolant jacket guide pad to slide in guide rail and the wearing and tearing that cause and overheated.
The quantity of described sealing ring is 5, wherein in the outside of described cooling fluid admission passage and the outside of described cooling fluid outflow passage, is respectively provided with 2, between described cooling fluid admission passage and described cooling fluid outflow passage, is provided with 1.Because the outside at cooling fluid admission passage and cooling fluid outflow passage is respectively provided with two sealing rings, therefore reached better sealing effectiveness.
Described sealing ring is X-shaped sealing ring.
The cross section of described coolant jacket guide pad is T-shaped.
The axial length of described coolant jacket is 70 millimeters to 90 millimeters.
The utility model also relates to a kind of blow mold, and described blow mold comprises de-thread mechanism as above.
Accompanying drawing explanation
The utility model is described in further detail below with reference to accompanying drawings.Those skilled in the art hold intelligible, and these accompanying drawings are the object for illustrating only, and is not intended to protection domain of the present utility model to be construed as limiting.In figure, identical Reference numeral represents same or analogous parts.For illustrative purposes, these figure not draw completely in proportion.
Fig. 1 is the side view of common vehicle fuel tank.
Fig. 2 is the side view of high-end vehicles fuel tank.
Fig. 3 is the profile of the de-thread mechanism of mould of prior art.
Fig. 4 is the profile of an embodiment of the de-thread mechanism of the utility model mould.
Fig. 5 is the stereogram of Fig. 4 illustrated embodiment.
Fig. 6 is the partial perspective view of Fig. 4 illustrated embodiment.
The specific embodiment
Term used herein " far-end " refers to the one end away from mould, and " near-end " refers to the one end near mould.These terms just for convenience, are not intended to limit the utility model.
Fig. 1 to Fig. 3 has been described in detail in background technology, repeats no more here.
Fig. 4 to Fig. 6 shows according to a kind of embodiment of the de-thread mechanism 20 of mould of the present utility model.In this example, de-thread mechanism 20 is as a part for the blow mold for the manufacture of vehicle fuel tank, and it also can produce the mould (for example injection mold) of screw thread for any other on product certainly.De-thread mechanism 20 comprise axis be X main shaft 26, be fixed to the screw thread generation device 40 of main shaft 26 far-ends, coaxially arranged and be fixed to the external bushing 24 of mould and be coaxially fixed on the swivel nut 42 of beating a precipitate retreat in external bushing 24 with main shaft 26.In the embodiment shown in fig. 4, main shaft 26 is roughly cylindrical, and its axis X and die sinking direction D are inconsistent; Screw thread generation device 40 is to see Fig. 2 for produce external screw thread 12(in fuel tank (see figure 2)) threaded cup, and be fixed to main shaft 26 by hexagon socket head cap screw (not shown); The swivel nut 42 of beating a precipitate retreat is also fixed to external bushing 24 by hexagon socket head cap screw (not shown).Should be understood that, main shaft 26 also can have any other suitable shape, such as polygon etc.; Screw thread generation device 40 can be also for produce the thread core of internal thread on product; Can replace described hexagon socket head cap screw to connect by any other suitable connection means (such as welding, riveted joint etc.), and these all will drop in protection domain of the present utility model.Main shaft 26 is provided with external screw thread 44 on a part of outer surface, the internal thread of beating a precipitate retreat in swivel nut 42 coordinates with this external screw thread and makes when main shaft 26 rotates around axis X the near-end of screw thread generation device 40 along axis X to main shaft 26 carry out axial retraction to move, and in the interior retraction direction of external bushing 24, leaves and be enough to the space 46 that departs from completely for screw thread generation device 40 and screw thread on product 10.Should be understood that, describedly (for example beat a precipitate retreat internal thread in swivel nut 42 and the lip-deep externally threaded design parameter of main shaft 26, pitch, rotation direction, tooth form etc.) depend on the axial retraction stroke of screw thread generation device 40, the factors such as number of threads on product 10, those skilled in the art can carry out suitable selection as the case may be.Preferably, the beat a precipitate retreat pitch of swivel nut 42 is identical with the pitch of screw thread generation device 40.
De-thread mechanism 20 also comprises the transmission mechanism for drive shaft 26 rotations.In the embodiment shown in fig. 4, this transmission mechanism comprise the tooth bar (not shown) that is connected with power source (not shown), with the driving gear 30 of this tooth bar engagement and the driven gear 32 that is driven rotation by driving gear 30.Driven gear 32 is fixed to main shaft 26 with key connected mode, to drive main shaft 26 to rotate around axis X.Should be understood that, can also adopt any other suitable kind of drive (such as belt transmission, chain transmission etc.) to make main shaft 26 realize rotation; Can replace above-mentioned key to connect with any other suitable connected mode (such as being spirally connected, riveted joint etc.), this all will fall into protection domain of the present utility model.
De-thread mechanism 20 is runnings like this: after completing the blow molding of fuel tank, mould will be opened to the direction away from fuel tank along die sinking direction D, main shaft 26 will be rotated around axis X under the drive of transmission mechanism simultaneously, simultaneously, owing to being provided with the swivel nut 42 of beating a precipitate retreat, main shaft 26 carries out axial retraction by the near-end that drives screw thread generation device 40 along axis X to main shaft 26 when rotated and moves, and screw thread generation device 40 and the screw thread on product 10 are departed from completely.
According to a preferred embodiment, the swivel nut 42 of beating a precipitate retreat is made by import beryllium copper, but it will be appreciated by persons skilled in the art that it also can be made by any material that other has good hardness and toughness, such as stainless steel, die hard steel etc.
De-thread mechanism 20 can also comprise the coolant jacket 34 that is arranged on main shaft 26 near-ends.Main shaft 26 can rotate motion with respect to coolant jacket 34, but between them, there is no axial relative motion.In the embodiment shown in fig. 4, one end of coolant jacket 34 is resisted against on pressure ring 60, and the other end is resisted against on the boss 62 of main shaft 26 outer surfaces, thereby realizes the axial restraint with respect to main shaft 26, and wherein pressure ring 60 is connected in the groove of main shaft 26 outer surfaces.Should be understood that, can also adopt any other suitable mode to realize the axial restraint of coolant jacket 34 on main shaft 26, and can not exceed protection domain of the present utility model.In coolant jacket 34, be provided with respectively the cooling fluid admission passage 38 and the cooling fluid that communicate with cool cycles passage (not shown) in main shaft 26 and flow out passage 39.Cooling fluid enters cooling fluid admission passage 38 from entrance (not shown), by the cool cycles passage (not shown) in main shaft 26, arrive screw thread generation device 40, thereby carry out cooling to it, and then be circulated back to cooling fluid outflow passage 39 by the cool cycles passage (not shown) in main shaft 26, and flow out by outlet (not shown).In order to prevent that the cooling fluid that cooling fluid admission passage 38 and cooling fluid flow out in passage 39 from leaking, and is provided with sealing ring 36 between coolant jacket 34 and main shaft 26.
As shown in Figure 5 and Figure 6, can also fix in the side of coolant jacket 34 a coolant jacket guide pad 50.Coolant jacket guide pad 50 can endwisely slip along axis X in the guide rail 52 being mated, and its middle guide 52 is fixed on mould.Coolant jacket guide pad 50 is realized the better lateral support of coolant jacket 34, and assurance coolant jacket 34 is in real time concentric with main shaft 26, avoids the wearing and tearing of sealing ring 36, thereby has greatly improved the service life of sealing ring 36.
In the embodiment shown in Fig. 5 and Fig. 6, between coolant jacket guide pad 50 and coolant jacket 34, adopt screw fixed form; Guide rail 52 is T-shaped with the cross section of coolant jacket guide pad 50.But should be understood that, can also adopt any other suitable fixed form (such as welding or riveted joint etc.) to replace described screw to fix; Guide rail 52 can be any other suitable shape with the cross section of coolant jacket guide pad 50, and such as I shape, isosceles triangle, trapezoidal etc., and this all will fall into protection domain of the present utility model.
According to a preferred embodiment, coolant jacket guide pad 50 is made by import beryllium copper, but it will be appreciated by persons skilled in the art that it also can be made by any material that other has good heat radiating and greasy property, such as graphite brass, Cr12(, coordinate oil groove to use) etc.
According to a preferred embodiment, the quantity of sealing ring 36 is 5, wherein in the outside of cooling fluid admission passage 38 and the outside of cooling fluid outflow passage 39, be respectively provided with 2, between cooling fluid admission passage 38 and cooling fluid outflow passage 39, be provided with 1.Such sealing ring is arranged can reach better sealing effectiveness.In the situation that increasing sealing ring quantity, can suitably increase the axial length of coolant jacket 34.In one embodiment, the length of coolant jacket 34 is 72 millimeters.In another embodiment, the length of coolant jacket 34 is 80 millimeters.In yet another embodiment, the length of coolant jacket 34 is 89 millimeters.
According to a preferred embodiment, sealing ring 36 is X-shaped sealing rings, but it will be appreciated by persons skilled in the art that the sealing ring that it also can any other suitable type, such as O RunddichtringO etc.
De-thread mechanism 20 described above is specially adapted to following situation: the product screw thread that manufacture in one with die sinking direction off plumb plane (example as shown in Figure 2) on, make in the process of die sinking, in order not pull product screw thread, must make screw thread generation device realize certain axial retraction in rotation.
Accompanying drawing and above declarative description non-limiting specific embodiment of the present utility model.In order to instruct inventive principle, simplified or omitted some conventional aspects.Those skilled in the art should understand that the modification that is derived from these embodiment drops in scope of the present utility model.Those skilled in the art should understand that following characteristics combination is in every way to form a plurality of modification of the present utility model.Thus, the utility model is not limited to following specific embodiment, and only by claim and their equivalent, is limited.
Claims (14)
1. the de-thread mechanism (20) of a mould, comprise main shaft (26), for the screw thread generation device (40) at product (10) upper generation screw thread (12), and with described main shaft (26) coaxially arranged be fixed on the external bushing (24) on described mould, wherein said main shaft (26) can be rotated around its axis (X), described screw thread generation device (40) is fixedly attached to the far-end of described main shaft (26), it is characterized in that, in described external bushing (24), be fixed with coaxially the swivel nut of beating a precipitate retreat (42), described main shaft (26) is provided with external screw thread (44) on a part of outer surface, the described swivel nut of beating a precipitate retreat (42) coordinate with described external screw thread make when described main shaft (26) rotates around described axis (X) described in the near-end of screw thread generation device (40) along described axis (X) to described main shaft (26) carry out axial retraction motion, and in the inherent retraction direction of described external bushing (24), leave and be enough to the space (46) that the screw thread on the described screw thread generation device of confession (40) and described product (10) departs from completely.
2. the de-thread mechanism of mould as claimed in claim 1, is characterized in that, the pitch of described screw thread generation device (40) with described in the beat a precipitate retreat pitch of swivel nut (42) identical.
3. the de-thread mechanism of mould as claimed in claim 1, is characterized in that, described mould is blow mold.
4. the de-thread mechanism of mould as claimed in claim 3, is characterized in that, described product (10) is the fuel tank of vehicle.
5. the de-thread mechanism of mould as claimed in claim 4, is characterized in that, described screw thread generation device (40) is on described fuel tank, to produce externally threaded threaded cup.
6. the de-thread mechanism of the mould as described in any one in claim 1 to 5, is characterized in that, described in the swivel nut (42) of beating a precipitate retreat by beryllium copper, made.
7. the de-thread mechanism of the mould as described in any one in claim 1 to 5, it is characterized in that, near-end at described main shaft (26) is also provided with coolant jacket (34) axial restraint, in described coolant jacket (34), be provided with respectively the cooling fluid admission passage (38) and the cooling fluid that communicate with cool cycles passage in described main shaft (26) and flow out passage (39), and be provided with sealing ring (36) between described coolant jacket (34) and described main shaft (26).
8. the de-thread mechanism of mould as claimed in claim 7, it is characterized in that, in the side of described coolant jacket (34), be fixed with coolant jacket guide pad (50), described coolant jacket guide pad (50) can endwisely slip along described axis (X) in the guide rail being mated (52), and described guide rail (52) is fixed on described mould.
9. the de-thread mechanism of mould as claimed in claim 8, is characterized in that, described coolant jacket guide pad (50) is made by beryllium copper.
10. the de-thread mechanism of mould as claimed in claim 8, it is characterized in that, the quantity of described sealing ring (36) is 5, wherein in the outside of described cooling fluid admission passage (38) and the outside of described cooling fluid outflow passage (39), be respectively provided with 2 sealing rings, between described cooling fluid admission passage (38) and described cooling fluid outflow passage (39), be provided with 1 sealing ring.
The de-thread mechanism of 11. moulds as described in any one in claim 8 to 10, is characterized in that, described sealing ring (36) is X-shaped sealing ring.
The de-thread mechanism of 12. moulds as described in any one in claim 8 to 10, is characterized in that, the cross section of described coolant jacket guide pad (50) is T-shaped.
The de-thread mechanism of 13. moulds as described in any one in claim 8 to 10, is characterized in that, the axial length of described coolant jacket (34) is 70 millimeters to 90 millimeters.
14. 1 kinds of blow molds, is characterized in that, described blow mold comprises the de-thread mechanism as described in any one in claim 1-13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320557640.3U CN203510694U (en) | 2013-09-09 | 2013-09-09 | Thread removing mechanism of mould and blowing mould comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320557640.3U CN203510694U (en) | 2013-09-09 | 2013-09-09 | Thread removing mechanism of mould and blowing mould comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203510694U true CN203510694U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320557640.3U Expired - Lifetime CN203510694U (en) | 2013-09-09 | 2013-09-09 | Thread removing mechanism of mould and blowing mould comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203510694U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106217824A (en) * | 2016-07-18 | 2016-12-14 | 安徽宁国中鼎模具制造有限公司 | A kind of note stretch blow mould demoulding with elasticity structure |
-
2013
- 2013-09-09 CN CN201320557640.3U patent/CN203510694U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106217824A (en) * | 2016-07-18 | 2016-12-14 | 安徽宁国中鼎模具制造有限公司 | A kind of note stretch blow mould demoulding with elasticity structure |
| CN106217824B (en) * | 2016-07-18 | 2018-06-29 | 安徽宁国中鼎模具制造有限公司 | A kind of note stretch blow mold demoulding with elasticity structure |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |