CN103407075A - Full-automatic molding inner and outer thread mold part die with different thread pitches - Google Patents
Full-automatic molding inner and outer thread mold part die with different thread pitches Download PDFInfo
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- CN103407075A CN103407075A CN2013103049551A CN201310304955A CN103407075A CN 103407075 A CN103407075 A CN 103407075A CN 2013103049551 A CN2013103049551 A CN 2013103049551A CN 201310304955 A CN201310304955 A CN 201310304955A CN 103407075 A CN103407075 A CN 103407075A
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Abstract
The invention discloses a full-automatic molding inner and outer thread mold part die with different thread pitches. The die includes an outer thread core for molding a mold part outer thread, and a first inner thread core for molding a mold part inner thread. The first inner thread core passes through the outer thread core, which is internally provided with a spline groove. The inner thread core is provided with a spline boss engaged with the spline groove. The outer thread core and the first inner thread core achieve engagement through the spline, so that the outer thread core and the first inner thread core can realize asynchronous removal from the inner and outer threads of the mold part. With the full-automatic molding inner and outer thread mold part with different thread pitches, the production efficiency can be improved, the production cost can be reduced, and quality of the mold part is enhanced.
Description
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Technical field
The present invention relates to the plastic part mould field, more specifically, relate to the internal and external threads plastic part mould of the different pitch of a kind of full-automatic molding band.
Background technology
For some internal and external threads plastics with different pitch on same end, when the restriction external screw thread of plastic component structure and shape can not be by two lobe die cavitys when half-formed, external screw thread can only be deviate from by rotation strand tooth, be internal and external threads all to rotate the strand tooth deviate from, when if internal thread tooth distance is different from external screw thread tooth distance, while rotating simultaneously the building core of internal and external threads, axial velocity must be produced poor, what pitch was large must be than little the moving axially soon of pitch, be difficult to synchronous by the de-internal and external threads of strand tooth, for these situations, develop this series products and be difficult to realize full-automatic de-screw thread, in the time of can only be by the movable insert injection moulding, be placed on mould, palpus manual demolition after injection moulding, so greatly increase production cost and reduced production efficiency, and Product Precision can not guarantee, affect the quality of plastic.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention proposes the internal and external threads plastic part mould of the different pitch of a kind of full-automatic molding band, adopts this plastic part mould can be asynchronous to deviate from the plastic internal and external threads structure of different pitch, realizes full-automatic.
To achieve these goals, technical scheme of the present invention is:
The internal and external threads plastic part mould of the different pitch of a kind of full-automatic molding band, comprise the first internal thread core of the externally threaded external screw thread core of moulding plastic, moulding plastic internal thread, and described the first internal thread core passes the external screw thread core; In described external screw thread core, be provided with spline, internal thread core be provided with the spline interlock the spline boss.The pitch of external screw thread core and the first internal thread core is determined according to the model of actual plastic.
On the external screw thread of plastic, have groove, described external screw thread core is also for moulding plastic groove.
When external screw thread apart from be greater than internal thread apart from the time, the spline protruded interstation of the end of the spline of described external screw thread core and the first internal thread core is provided with certain stroke X, and the axial displacement that when described stroke X must be greater than the first internal thread core and deviates from plastic, external screw thread core and the first internal thread core produced is poor.
Described external screw thread core end edge tightly has a tin bronze cover, and the external diameter of described tin bronze cover endoporus and the first internal thread core is slidably matched.
Described when the matched moulds state, described tin bronze cover endoporus bottom surface holds out against the terminal surface of the first internal thread core, and it can not be retreated; After the external screw thread core was thrown off product fully, the first internal thread core end can not break away from the endoporus of tin bronze cover fully.
If the two ends of plastic are inconsistent, be that the other end is comprised of many reinforcements and inboard screw thread the outside, described plastic part mould also comprises the reinforcement core of moulding plastic reinforcement and the second internal thread core of moulding plastic internal thread, and described the second internal thread core passes the reinforcement core.
Described plastic part mould also comprises central core, and central core is passed the second internal thread core and participated in the straight figure of moulding plastic.
Compared with prior art, beneficial effect of the present invention is: between external screw thread core and the first internal thread core, utilize the spline interlock, make the asynchronous internal and external threads of deviating from plastic of external screw thread core and the first internal thread core.The internal and external threads plastic of the different pitch of full-automatic molding band, provide production efficiency and reduce production costs, and improve the plastic quality.
The accompanying drawing explanation
Fig. 1-4 are for adopting moulding plastic product structure analysis chart of the present invention.
Fig. 5 is mould structure schematic diagram of the present invention.
Fig. 6 is rear mold part top view of the present invention.
Fig. 7 is a side gear transmission schematic diagram of the present invention.
Fig. 8 is gear drive schematic diagram in another side of the present invention.
Fig. 9,10 is the schematic three dimensional views of rear mold part of the present invention.
Figure 11 is the schematic three dimensional views of front mould part of the present invention.
Figure 12 is for adopting moulding internal and external threads of the present invention to break away from the course of work view of core.
Figure 13 is the schematic diagram of slide plate of the present invention.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing, but embodiments of the present invention are not limited to this.
Plastic component structure is analyzed: plastic as Figure 1-4, and less that N1 of internal thread of the external screw thread 503 that an end band pitch is larger and pitch forms, and a circle groove 502 is arranged at external screw thread 503 bottoms, and the other end is comprised of many reinforcements 501 and internal thread N2 505.The existence of groove 502 restriction external screw thread 503 can not be by two lobe die cavitys when half-formed, and external screw thread 503 can only be deviate from by rotation strand tooth, but due to the tooth of external screw thread 503 apart from the tooth distance that is greater than internal thread N1 504, while producing simultaneously, must produce an axial velocity poor.Therefore external screw thread 503 and internal thread N1 504 can not be by same thread core moulding.Therefore the moulding of plastic being divided into to several parts forms.
Concrete mould structure:
By external screw thread core 1 moulding plastic, than the external screw thread of coarse pitch 503 and a circle groove 502, in its interstitial hole, make to have spline.
The first internal thread core 2 passes participation moulding plastic internal thread N1 504 parts of external screw thread core 1, and the first internal thread core 2 diametric planes are provided with spline interlock in spline boss and external screw thread core 1, and the end of spline and spline boss are provided with certain stroke X.External screw thread core 1 end edge tightly has a tin bronze cover 22, and the external diameter of described tin bronze cover 22 endoporus and the first internal thread core 2 is slidably matched.
When the effect of tin bronze cover 22 is matched moulds, withstand the first internal thread core 2 and prevent that it from retreating, and in motion process, prevent that the first internal thread core 2 from turning burning.
External screw thread core 1 external diameter has the first driven gear 24 by the flat key fixed-link, the first driven gear 24 two ends have respectively the taper roll bearing on the first take-up housing 7 and the first slide pressing plate 6 to push down, the first take-up housing 7 is linked and is fixed by screw with the first slide pressing plate 6, realizes external screw thread core 1 first take-up housing 7 relative to the first driven gear 24 and the first slide pressing plate 6 axial restraints.
The first take-up housing 7 both sides are pushed down by the first press strip 26, and baffle plate 8 is fixed on the end of two the first press strips 26 by screw.Two groups of contour screws pass respectively the end that the first Compress Spring 9 is connected to the first take-up housing 7.
For the other end of product, reinforcement core 3 is fixed on reinforcement core holder 23, participates in the moulding of plastic reinforcement 501; The second internal thread core 4 passes reinforcement core 3 and participates in moulding plastic internal thread N2 505 parts; Central core 5 is passed again the second internal thread core 4 and is participated in the straight figure 506 of moulding plastic product.
Inside casing 29 two ends are screwed and are connected with central core holder 30 with reinforcement core holder 23 respectively.And inside casing 29 is pushed down respectively the both sides of the second take-up housing 39 and take-up housing pressing plate 38.Article two, to two press strips 28, push down respectively again the two ends of reinforcement core holder 23, inside casing 29, central core holder 30.
The second internal thread core 4 external diameters have driven gear 31 by the flat key fixed-link, driven gear 31 two ends have respectively the second take-up housing 39 and the taper roll bearing on seat pressing plate 38 to push down, the second take-up housing 39 is linked and is fixed by screw with seat pressing plate 38, realizes the second internal thread core 4 second take-up housing 39 relative to driven gear 31 and seat pressing plate 38 axial restraints.
The second transition gear 33 two ends are pushed down by the deep groove ball bearing that is fixed on rear pattern plate 20 and the second gear housing 36 respectively, and the second transition gear 33 meshes respectively driven gear 31 and the second driven wheel 34.The second driven wheel 34 two ends are pushed down by the deep groove ball bearing that is fixed on the second gear housing 36 and the second gear box cover 37 respectively.The second oil motor 35 is fixed on the second gear housing 36, and with the second driven wheel 34 in the keyway interlock.
Two groups of contour screws pass respectively the end that the second Compress Spring 32 is connected to the second take-up housing 39.Central core 5 is fixed on central core holder 30, and central core holder 30 two ends are connected with respectively roller 27, and two groups of rollers 27 are hidden in respectively in slide plate 15 guide runners that are fixed on front template 25.
Mold work process: stop after first allowing front template 25 and rear pattern plate 20 open one section during die sinking, roller 27 still is in the straight figure that reaches slide plate 15 guide runners, simultaneously, the first latch segment 16 and the second latch segment 17 leave respectively the locking inclined-plane of take-up housing 7 and the second take-up housing 39.
Then control the injection machine oil circuit, thereby allow the first oil motor 13 first rotate, drive the first driven wheel 14 rotations, by First Transition gear 10, be transferred to the first driven gear 24, thereby driving the external screw thread core 1 be fixed on the first driven gear 24 rotates, now take-up housing 7 is subject to being connected to the elastic force of the first Compress Spring 9 on the connecting screw of its back, the thrust produced while being subject to again external screw thread core 1 with 503 demoulding of plastic external screw thread, under the effect of two power, make take-up housing 7 and skid off until arrive baffle plate 8 and stop by external screw thread core 1 integral body that bearing is fixed on its inside.Of the present invention focusing on due to the spline boss interlock be provided with in external screw thread core 1 on spline and the first internal thread core 2 wherein, and the length of spline and spline boss are provided with certain stroke X, while being 1 rotation of external screw thread core, must drive the first internal thread core 2 rotates, and plastic was fixed at that time, side forces the first internal thread core 2 to produce an axial force of deviating from the plastic internal thread, because external screw thread core 1 tooth distance is larger, the speed of its axial demoulding is faster than internal thread core L2, so it is poor that stroke X must be greater than the axial displacement that when the first internal thread core 2 is deviate from plastic external screw thread core 1 and the first internal thread core 2 produce.Wherein when breaking away from plastic internal thread rear side, internal thread core 2 can not continue to produce axial displacement, until external screw thread core 1 when its spline end arrives the spline boss of internal thread core 2 while continuing to loose core, drives internal thread core 2 and continues synchronously to loose core until external screw thread core 1 breaks away from plastic fully.
Thereby then controlling another oil circuit of injection machine makes the second oil motor 35 rotations drive the second driven wheel 34 rotations.By the second transition gear 33 and the 3rd transition gear 40, be transferred to two driven gears 31, thereby driving the second internal thread core 4 rotates, now owing to being fixed on roller 27 on central core holder 30 still in the straight figure of slide plate 15 guide runners, even central core holder 30, central core 5, inside casing 29, reinforcement core 3 is in stationary state, being that plastic still is fixed on reinforcement core 3 and central core 5 is interior can not rotate and can not move axially, force the second internal thread core 4 to produce an axial knockout press, the second take-up housing 39 both had been subject to the axial knockout press of elastic force and second internal thread core 4 of the second Compress Spring 32, thereby integrated moving is until the second take-up housing 39 arrives the position of limiting stops.And then die sinking, front template 25 rear pattern plates 20 continue to open, roller 27 is slided in the bevel phase of slide plate 15 guide runners, thereby drive and to be in interconnective central core holder 30, central core 5, inside casing 29, reinforcement core 3 integral body and to skid off, because plastic also has the glue position, be fixed on rear cavity 19, so central core 5 and reinforcement core 3 are all corresponding deviates from plastic.Last plastic is ejected by push rod.
Above-described embodiments of the present invention, do not form the restriction to protection domain of the present invention.Any modification of having done within spiritual principles of the present invention, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present invention.
Claims (7)
1. the internal and external threads plastic part mould of the different pitch of full-automatic molding band, is characterized in that, comprise the first internal thread core of the externally threaded external screw thread core of moulding plastic, moulding plastic internal thread, described the first internal thread core passes the external screw thread core; In described external screw thread core, be provided with spline, internal thread core be provided with the spline interlock the spline boss.
2. the internal and external threads plastic part mould of the different pitch of full-automatic molding band according to claim 1, is characterized in that, described external screw thread core is also for moulding plastic groove.
3. the internal and external threads plastic part mould of the different pitch of full-automatic molding band according to claim 2, it is characterized in that, the spline protruded interstation of the end of the spline of described external screw thread core and the first internal thread core is provided with certain stroke X, and the axial displacement that when described stroke X must be greater than the first internal thread core and deviates from plastic, external screw thread core and the first internal thread core produced is poor.
4. the internal and external threads plastic part mould of the different pitch of full-automatic molding band according to claim 3, is characterized in that, described external screw thread core end edge tightly has a tin bronze cover, and the external diameter of described tin bronze cover endoporus and the first internal thread core is slidably matched.
5. the internal and external threads plastic part mould of the different pitch of full-automatic molding band according to claim 4, is characterized in that, described when the matched moulds state, and described tin bronze cover endoporus bottom surface holds out against the terminal surface of the first internal thread core, and it can not be retreated; After the external screw thread core was thrown off product fully, the first internal thread core end can not break away from the endoporus of tin bronze cover fully.
6. the internal and external threads plastic part mould of the different pitch of full-automatic molding band according to claim 5, it is characterized in that, described plastic part mould also comprises the reinforcement core of moulding plastic reinforcement and the second internal thread core of moulding plastic internal thread, and described the second internal thread core passes the reinforcement core.
7. the internal and external threads plastic part mould of the different pitch of full-automatic molding band according to claim 6, is characterized in that, described plastic part mould also comprises central core, and central core is passed the second internal thread core and participated in the straight figure of moulding plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310304955.1A CN103407075B (en) | 2013-07-19 | 2013-07-19 | A kind of internal and external threads plastic part mould of full-automatic molding band difference pitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310304955.1A CN103407075B (en) | 2013-07-19 | 2013-07-19 | A kind of internal and external threads plastic part mould of full-automatic molding band difference pitch |
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| Publication Number | Publication Date |
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| CN103407075A true CN103407075A (en) | 2013-11-27 |
| CN103407075B CN103407075B (en) | 2016-12-28 |
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| CN201310304955.1A Active CN103407075B (en) | 2013-07-19 | 2013-07-19 | A kind of internal and external threads plastic part mould of full-automatic molding band difference pitch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105196492A (en) * | 2015-09-21 | 2015-12-30 | 台州市黄岩炜大塑料机械有限公司 | Synchronous revolution demolding mechanism of inner and outer double-threaded-pipe-fitting mold |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3481000A (en) * | 1966-09-22 | 1969-12-02 | Tavannes Machines Co Sa | Moulding presses |
| JPH09323343A (en) * | 1996-06-06 | 1997-12-16 | Sekigami Seisakusho:Kk | Mold |
| CN201950303U (en) * | 2011-01-20 | 2011-08-31 | 福建省长乐市华拓五金有限公司 | Internal contraction type internal and external thread pitch self-adaption threading die bush of screw tap |
| WO2012104094A1 (en) * | 2011-02-04 | 2012-08-09 | Thomas Meister | Threaded core unscrewing device |
| CN202846814U (en) * | 2012-07-27 | 2013-04-03 | 广东联塑科技实业有限公司 | Multi-directional thread demoulding structure for slide |
-
2013
- 2013-07-19 CN CN201310304955.1A patent/CN103407075B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3481000A (en) * | 1966-09-22 | 1969-12-02 | Tavannes Machines Co Sa | Moulding presses |
| JPH09323343A (en) * | 1996-06-06 | 1997-12-16 | Sekigami Seisakusho:Kk | Mold |
| CN201950303U (en) * | 2011-01-20 | 2011-08-31 | 福建省长乐市华拓五金有限公司 | Internal contraction type internal and external thread pitch self-adaption threading die bush of screw tap |
| WO2012104094A1 (en) * | 2011-02-04 | 2012-08-09 | Thomas Meister | Threaded core unscrewing device |
| CN202846814U (en) * | 2012-07-27 | 2013-04-03 | 广东联塑科技实业有限公司 | Multi-directional thread demoulding structure for slide |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105196492A (en) * | 2015-09-21 | 2015-12-30 | 台州市黄岩炜大塑料机械有限公司 | Synchronous revolution demolding mechanism of inner and outer double-threaded-pipe-fitting mold |
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| Publication number | Publication date |
|---|---|
| CN103407075B (en) | 2016-12-28 |
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