CN102672914B - Duplex helical gear injection molding stripping mechanism - Google Patents
Duplex helical gear injection molding stripping mechanism Download PDFInfo
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- CN102672914B CN102672914B CN201210159784.3A CN201210159784A CN102672914B CN 102672914 B CN102672914 B CN 102672914B CN 201210159784 A CN201210159784 A CN 201210159784A CN 102672914 B CN102672914 B CN 102672914B
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- helical gear
- dynamic model
- cavity block
- ball bearing
- gear cavity
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- 238000001746 injection moulding Methods 0.000 title abstract description 5
- 238000000465 moulding Methods 0.000 claims abstract description 43
- 230000000694 effects Effects 0.000 claims description 38
- 229920003023 plastic Polymers 0.000 claims description 26
- 239000004033 plastic Substances 0.000 claims description 26
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention relates to a duplex helical gear injection molding stripping mechanism. A first movable molding bushing is arranged in a mold cavity of a movable mold plate; a movable locating ring is sleeved outside the first movable molding bushing; a second movable molding bushing is arranged in a center hole of the first movable molding bushing; a second helical gear mold cavity insert and a first helical gear mold cavity insert are arranged on the movable locating ring; a locating post is movably connected into each waist-shaped locating hole of the first helical gear mold cavity insert; the locating posts are downwardly inserted into locating holes of the second helical gear mold cavity insert corresponding to the movable locating ring; a first planar thrust ball bearing and a second planar thrust ball bearing are respectively arranged between parts of the lower part and the outer side of the movable locating ring which correspond to the movable mold plate and the first movable molding bushing respectively; and a centripetal thrust ball bearing which is in tight fit with the first movable molding bushing is arranged in the center hole of the movable locating ring. According to the duplex helical gear injection molding stripping mechanism, the synchronous stripping can be realized after duplex helical gear injection molding, and molded pieces do not deform, so that the accuracy of the molded pieces is ensured, and the stripping is flexible and reliable.
Description
Technical field
The present invention relates to duplex helical gear injection mo(u)lding mould emptier.
Background technology
Due to the helical angle of helical gear profile of tooth with certain angle; for plastic beveled wheel; during the plastic injection moulding demoulding; when requiring ejecting mechanism to press stripping direction release; the direction that the die cavity of moulding profile of tooth or plastic gear itself tilts by profile of tooth is rotated; can reach the object of the smooth demoulding, conventional helical gear mould emptier makes the rotation of profile of tooth die cavity and makes gear plastic rotation two large classes.But for plastics duplex helical gear, during the demoulding, except solving the problem of the rotation of profile of tooth die cavity or the rotation of gear plastic, also need to solve the demoulding difficulty causing because two helical gear pitch are different.In duplex helical gear injection mo(u)lding mould emptier, there is at present the cavity block of the helical gear moulding that adopts bottom
iIutilize rolling bearing and steel ball to realize and rotate, and the cavity block I of the helical gear moulding on top need to along with plastic deviate from mould outer after, then rely on special spanner manually to screw out, before next infusion cycles, then this I of inserting is put into mould relevant position.Shaping efficiency is lower on the one hand for the demolding structure of above-mentioned step demoulding, continuous for what guarantee to produce on the other hand, must prepare several helical gear cavity block, and the frictional resistance between cavity block is large in relative rotation, the gap producing after wearing and tearing easily makes plastics flash more.As adopt the mode of forced demoulding, easily cause plastic distortion and affect precision of plastic.
Summary of the invention
The object of the invention is to propose the synchronous demoulding of a kind of two helical gear cavity block and can guarantee the indeformable duplex helical gear injection mo(u)lding of plastic mould emptier.
For achieving the above object, the present invention takes following technical scheme:
The duplex helical gear injection mo(u)lding mould emptier that the present invention proposes, comprise moving platen, dynamic model seat and plastic release assembly, in the die cavity of moving platen, be provided with the first dynamic model moulding edge cover, the first dynamic model moulding edge cover outer cover has activity orientation circle, in the centre bore of the first dynamic model moulding edge cover, be provided with the second dynamic model moulding edge cover, on the end face of activity orientation circle, be provided with the second helical gear cavity block and the first helical gear cavity block; On the first helical gear cavity block, the second helical gear cavity block and activity orientation circle, be all symmetrical arranged two locating holes, wherein the locating hole of the first helical gear cavity block is kidney-shaped locating hole, the locating dowel that is all dynamically connected in each kidney-shaped locating hole of the first helical gear cavity block, locating dowel is inserted the second helical gear cavity block downwards with in locating hole corresponding to activity orientation circle and three is connected; The below of activity orientation circle and outside are provided with the first thrust ball bearing with flat seat and the second thrust ball bearing with flat seat respectively and between the corresponding site of moving platen, the first dynamic model moulding edge cover, be provided with and be a tight fit in the angular contact ball bearing that the first dynamic model moulding edge puts in the centre bore of activity orientation circle.
Below the first thrust ball bearing with flat seat, be provided with the first Height Adjustment circle.
Below the second thrust ball bearing with flat seat, be provided with the second Height Adjustment circle.
The die cavity of moving platen is stairstepping, forms upper and lower spacing end face in die cavity, and the profile of the first dynamic model moulding edge cover is stairstepping, forms upper and lower ladder plane on contoured surface, and activity orientation circle has chassis; Between the upper surface and the upper limit end face in moving platen die cavity of the first thrust ball bearing with flat seat in activity orientation circle chassis, between the bottom surface and the downstairs plane of the first dynamic model moulding edge cover of the second thrust ball bearing with flat seat in activity orientation circle chassis.
Each is greater than the helical angle
of the helix on the first helical gear cavity block internal chamber wall with the folded angle of the line at the first helical gear cavity block center the center of circle of the kidney-shaped locating dowel groove two ends circular arc of the first helical gear cavity block.
Described dynamic model seat comprises dynamic model backing plate, cushion block and the Bottom clamp plate arranging from top to bottom.
Described plastic is released assembly and is had push pedal and be connected to ejector sleeve and the some push rods in push pedal, push pedal is between dynamic model backing plate and Bottom clamp plate, ejector sleeve is upwards inserted into the centre bore correspondence position of the second dynamic model moulding edge cover by the centre bore on dynamic model backing plate, the tube wall of described ejector sleeve is provided with two relative gathering sills, on the end face of dynamic model backing plate, be provided with the pin groove that crosses dynamic model backing plate centre bore, a bearing pin is embedded in pin groove by the gathering sill on ejector sleeve wall.
The present invention has following good effect: what 1, the present invention taked to connect locating dowel in the first helical gear cavity block is kidney-shaped locating hole, can make like this first helical gear cavity block and the second rotation of helical gear cavity block in knockout course form the trace adjustment of elder generation, rear difference and relative position, after duplex helical gear injection mo(u)lding, can realize the synchronous demoulding and plastic indeformable, guarantee precision of plastic.2, angular contact ball bearing of the present invention and thrust ball bearing with flat seat is combined with, simultaneously by Height Adjustment circle is set, adjust the engagement height of thrust ball bearing with flat seat, reduced the rotational resistance of activity orientation circle, because the first helical gear cavity block and the second helical gear cavity block are connected on activity orientation circle, so " rotation " resistance while having reduced the demoulding, makes demoulding flexibility and reliability, and reduces the wearing and tearing of working parts of dies.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the schematic diagram of moving platen.
Fig. 3 is the schematic diagram of the first dynamic model moulding edge cover.
Fig. 4 is the schematic diagram of activity orientation circle.
Fig. 5 is the structural representation of the first helical gear cavity block.
Fig. 6 is the top view of Fig. 5.
Fig. 7 is the structural representation of the second helical gear cavity block.
Fig. 8 is the top view of Fig. 7.
The specific embodiment
See Fig. 1, the present embodiment comprises moving platen 1, dynamic model seat 2, the first dynamic model moulding edge cover 3, activity orientation circle 4, second dynamic model moulding edge cover the 5, first helical gear cavity block 6, the second helical gear cavity block 7 and plastic release assembly 15.Described dynamic model seat 2 comprises dynamic model backing plate 2-1, cushion block 2-2 and the Bottom clamp plate 2-3 arranging from top to bottom.Moving platen 1, dynamic model backing plate 2-1, cushion block 2-2 and Bottom clamp plate 2-3 are linked together by bolt.
Shown in Fig. 2 is the schematic diagram of moving platen 1, and the die cavity 1-1 of moving platen 1 is stairstepping, forms upper limit end face 1a and lower limit end face 1b in die cavity 1-1.
Shown in Fig. 3 is the schematic diagram of the first dynamic model moulding edge cover 3, the first dynamic model moulding edge cover 3 has centre bore 3-1 and several equally distributed push-rod hole 3-2, the profile of the first dynamic model moulding edge cover 3 is stairstepping, forms ladder plane 3a and downstairs plane 3b on contoured surface.
Shown in Fig. 4 is the schematic diagram of activity orientation circle 4, and activity orientation circle 4 is inverted T-shaped, and bottom is chassis 4-3, has centre bore 4-1 and two symmetrically arranged locating hole 4-2 on activity orientation circle 4.
See Fig. 1, the first dynamic model moulding edge cover 3 is in the die cavity 1-1 of moving platen 1, in the annular space of the lower limit end face 1b below of the edge of downstairs embedding moving platen die cavity 1-1, is prevented from axial float.
In the second centre bore 3-1 of dynamic model moulding edge cover 5 in the first dynamic model moulding edge cover 3.The end face of the first dynamic model moulding edge cover 3 and the end face of activity orientation circle 4 maintain an equal level.On the end face of activity orientation circle 4, be provided with the second helical gear cavity block 7 and the first helical gear cavity block 6 in the second helical gear cavity block 7.Between activity orientation circle 4, the second helical gear cavity block 7, the first helical gear cavity block 6 and the die cavity 1-1 inwall of moving platen 1, there is gap.
The first helical gear cavity block 6(is shown in Fig. 5 and Fig. 6) there are inner chamber 6-1 and symmetrically arranged two kidney-shaped locating hole 6-2, inner chamber 6-1 wall is provided with the interior toothed ring gear of corresponding plastic helical shape.The center of circle of the kidney-shaped locating hole 6-2 two ends circular arc of the first helical gear cavity block 6 each with the folded angle of the line at the first helical gear cavity block 6 centers
αbe slightly larger than the helical angle of the interior toothed ring gear on the first helical gear cavity block internal chamber wall
β.The helical angle of toothed ring gear in example
βbe 12 °, folded angle
αbe 15 °.
The second helical gear cavity block (seeing Fig. 7 and Fig. 8) 7 has inner chamber 7-1 and symmetrically arranged two locating hole 7-2.
In each kidney-shaped locating hole 6-2 of the first helical gear cavity block 6, be provided with a locating dowel 9, locating dowel 9 is inserted in locating hole 4-2 corresponding on locating hole 7-2 corresponding in the second helical gear cavity block 7 and activity orientation circle 4 downwards, by locating dowel 9, the first helical gear cavity block 6, the second helical gear cavity block 7 and activity orientation circle 4 are linked together, locating dowel 9 and the first helical gear cavity block 6 are to be dynamically connected.Because the pitch of duplex helical gear is different, the first helical gear cavity block 6 and the second helical gear cavity block 7 are in synchronous knockout course, both rotations must exist first, rear difference, so that take the first helical gear cavity block 6 settings is kidney-shaped locating hole 6-2, kidney-shaped locating hole 6-2 can make the rotation of the first helical gear cavity block 6 postpone, realized the priority of the first helical gear cavity block 6 and the second helical gear cavity block 7 and rotated, and in rotation process two gear type cavity insert relative positions trace adjustment.
Because the first helical gear cavity block 6 and the second helical gear cavity block 7 are connected on activity orientation circle 4, in knockout course, activity orientation circle 4 rotates with the second helical gear cavity block 7 and the first helical gear cavity block 6, for making the demoulding flexible, so need to reduce activity orientation circle 4 and " rotation " resistance between fixed part contact site around as far as possible, for this reason, between the upper limit end face 1a of the upper surface of the chassis 4-3 of activity orientation circle 4 and moving platen 1 inner chamber, be provided with the first thrust ball bearing with flat seat 10, between the downstairs plane 3b of the bottom surface of activity orientation circle 4 chassis 4-3 and the first dynamic model moulding edge cover 3, be provided with the second thrust ball bearing with flat seat 12, in the centre bore of activity orientation circle 4, be provided with the angular contact ball bearing 8 being a tight fit on the first dynamic model moulding edge cover 3.For convenience of mould assembling, adjust the engagement height of two thrusts ball bearing with flat seat, below the first thrust ball bearing with flat seat 10, be provided with the first Height Adjustment circle 11, below the second thrust ball bearing with flat seat 12, be provided with the second Height Adjustment circle 13.
Described plastic is released assembly 15 and is had push pedal 15-1 and be connected to ejector sleeve 15-3 and the some push rod 15-2 on push pedal 15-1, push pedal 15-1 is between dynamic model backing plate 2-1 and Bottom clamp plate 2-3, ejector sleeve 15-3 is enclosed within the outside of core d, ejector sleeve 15-3 is upwards inserted into the centre bore correspondence position of the second dynamic model moulding edge cover 5 by the centre bore on dynamic model backing plate 2-1, the tube wall of described ejector sleeve 15-3 is provided with two relative gathering sill 15-3-1, on the end face of dynamic model backing plate 2-1, be provided with the location cotter way 2-1-1 that crosses dynamic model backing plate 2-1 centre bore, one flat alignment pin 14 is embedded in the location cotter way 2-1-1 on dynamic model backing plate 2-1 by the gathering sill 15-3-1 on ejector sleeve 15-3 wall and core d.Every push rod 15-2 inserts in push-rod hole 3-2 corresponding on the first dynamic model moulding edge cover 3 by the push-rod hole on dynamic model backing plate 2-1.
During the demoulding, push pedal 15-1 drives ejector sleeve 15-3 and Duo Gen push rod 15-2 to go up respectively the inside and outside circle of top duplex helical gear plastic e, promotes plastic and vertically moves outside mould.When plastic moves, two helical gear cavity block are rotated by " reverse ", after the second helical gear cavity block 7 turns an angle, then drive the first helical gear cavity block 6 effectively to rotate, until plastic is released dynamic model completely, and the fluent Automatic-falling of plastic.For avoiding plastic to produce the synchronous rotary that is out of shape and realizes two moulding beveled gear teeth circles in push, should adopt the stripping means of releasing at a slow speed.
Claims (7)
1. a duplex helical gear injection mo(u)lding mould emptier, comprise moving platen (1), dynamic model seat (2) and plastic release assembly (15), it is characterized in that: in the die cavity (1-1) of moving platen (1), be provided with the first dynamic model moulding edge cover (3), first dynamic model moulding edge cover (3) outer cover has activity orientation circle (4), in the centre bore of the first dynamic model moulding edge cover (3), be provided with the second dynamic model moulding edge cover (5), on the end face of activity orientation circle (4), be provided with the second helical gear cavity block (7) and the first helical gear cavity block (6); On the first helical gear cavity block (6), the second helical gear cavity block (7) and activity orientation circle (4), be all symmetrical arranged two locating holes, wherein the locating hole of the first helical gear cavity block (6) is kidney-shaped locating hole (6-2), the locating dowel (9) that is all dynamically connected in each kidney-shaped locating hole (6-2) of the first helical gear cavity block (6), locating dowel (9) is inserted downwards in the second helical gear cavity block (7) and locating hole corresponding to activity orientation circle (4) and three is connected; The below of activity orientation circle (4) and outside are provided with the first thrust ball bearing with flat seat (10) and the second thrust ball bearing with flat seat (12) respectively and between the corresponding site of moving platen (1), the first dynamic model moulding edge cover (3), are provided with to be a tight fit in the first dynamic model moulding edge and to overlap the angular contact ball bearing (8) on (3) in the centre bore of activity orientation circle (4).
2. duplex helical gear injection mo(u)lding mould emptier according to claim 1, is characterized in that: in the below of the first thrust ball bearing with flat seat (10), be provided with the first Height Adjustment circle (11).
3. duplex helical gear injection mo(u)lding mould emptier according to claim 1, is characterized in that: in the below of the second thrust ball bearing with flat seat (12), be provided with the second Height Adjustment circle (13).
4. duplex helical gear injection mo(u)lding mould emptier according to claim 1, it is characterized in that: the die cavity (1-1) of moving platen (1) is stairstepping, in die cavity (1-1), form upper and lower spacing end face (1a, 1b), the profile of the first dynamic model moulding edge cover (3) is stairstepping, on contoured surface, form upper and lower ladder plane (3a, 3b), activity orientation circle (4) has chassis (4-3); Between the upper surface and the upper limit end face (1a) in moving platen die cavity (1-1) of the first thrust ball bearing with flat seat (10) in activity orientation circle chassis (4-3), between the bottom surface and the downstairs plane (3b) of the first dynamic model moulding edge cover (3) of the second thrust ball bearing with flat seat (12) in activity orientation circle (4) chassis (4-3).
5. duplex helical gear injection mo(u)lding mould emptier according to claim 1, is characterized in that: the center of circle of kidney-shaped locating hole (6-2) the two ends circular arc of the first helical gear cavity block (6) each with the folded angle of the line at the first helical gear cavity block (6) center (
α) be greater than the helix on the first helical gear cavity block (6) internal chamber wall helical angle (
β).
6. duplex helical gear injection mo(u)lding mould emptier according to claim 1, is characterized in that: described dynamic model seat (2) comprises dynamic model backing plate (2-1), cushion block (2-2) and the Bottom clamp plate (2-3) arranging from top to bottom.
7. duplex helical gear injection mo(u)lding mould emptier according to claim 6, it is characterized in that: described plastic is released assembly (15) and had push pedal (15-1) and be connected to ejector sleeve (15-3) and the some push rods (15-2) in push pedal (15-1), push pedal (15-1) is between dynamic model backing plate (2-1) and Bottom clamp plate (2-3), ejector sleeve (15-3) is upwards inserted into the centre bore correspondence position of the second dynamic model moulding edge cover (5) by the centre bore on dynamic model backing plate (2-1), the tube wall of described ejector sleeve (15-3) is provided with relative two gathering sills (15-3-1), on the end face of dynamic model backing plate (2-1), be provided with the pin groove (2-1-1) that crosses dynamic model backing plate (2-1) centre bore, one bearing pin (14) is embedded in pin groove (2-1-1) by the gathering sill (15-3-1) on ejector sleeve (15-3) wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210159784.3A CN102672914B (en) | 2012-05-21 | 2012-05-21 | Duplex helical gear injection molding stripping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210159784.3A CN102672914B (en) | 2012-05-21 | 2012-05-21 | Duplex helical gear injection molding stripping mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102672914A CN102672914A (en) | 2012-09-19 |
| CN102672914B true CN102672914B (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210159784.3A Active CN102672914B (en) | 2012-05-21 | 2012-05-21 | Duplex helical gear injection molding stripping mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN102672914B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406155A (en) * | 2019-06-26 | 2019-11-05 | 泉州蚁人时代工业设计有限公司 | A kind of bevel wheel machining mold |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121277B (en) * | 2013-02-02 | 2015-03-18 | 宁波思迈工业科技有限公司 | Spiral demoulding device of bevel gear injection mold |
| CN104015316A (en) * | 2014-05-09 | 2014-09-03 | 昆山市大久电子有限公司 | Plastic injection mold with rotating ejection demolding function for oblique thread workpieces |
| CN104002441A (en) * | 2014-05-09 | 2014-08-27 | 昆山市大久电子有限公司 | Injection mold capable of realizing high-efficiency rotary ejection and demolding of sloping-thread workpieces |
| CN105881844B (en) * | 2016-04-06 | 2017-10-17 | 常州工学院 | A kind of helical teeth bicylindrical plastic gear is molded differential mould emptier |
| CN108262920A (en) * | 2018-01-23 | 2018-07-10 | 湖北工业大学 | The combinatory core and injection mold of moulding plastics gear |
| CN113415010A (en) * | 2021-08-24 | 2021-09-21 | 山东豪迈机械科技股份有限公司 | Two half moulds of tire |
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| CN1365883A (en) * | 2001-01-19 | 2002-08-28 | 埃－泰克技术开发有限公司 | Die assembly block used for injection moulding |
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2012
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|---|---|---|---|---|
| US3602058A (en) * | 1968-12-12 | 1971-08-31 | Ici Ltd | Gears having deformable and indeformable teeth |
| CN1365883A (en) * | 2001-01-19 | 2002-08-28 | 埃－泰克技术开发有限公司 | Die assembly block used for injection moulding |
| JP2007245585A (en) * | 2006-03-16 | 2007-09-27 | Ricoh Co Ltd | Die apparatus for helical gear and helical gear manufactured thereby |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406155A (en) * | 2019-06-26 | 2019-11-05 | 泉州蚁人时代工业设计有限公司 | A kind of bevel wheel machining mold |
| CN110406155B (en) * | 2019-06-26 | 2021-03-09 | 南通品杰模塑科技有限公司 | Helical gear machining die |
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| CN102672914A (en) | 2012-09-19 |
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Effective date of registration: 20231113 Address after: 515071 2nd floor, building 2, jinbeite building, north end of N1 Road, Shantou Free Trade Zone, Guangdong Province Patentee after: Guangdong osbo film material technology Co.,Ltd. Address before: 515071 Jinbeite Building, North End of N1 Road, Shantou Free Trade Zone, Haojiang District, Shantou City, Guangdong Province Patentee before: DRINK-BETTER (SHANTOU) CO.,LTD. |