CN102101350B - Precision mold for small-spiral-angle duplex gear - Google Patents
Precision mold for small-spiral-angle duplex gear Download PDFInfo
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- CN102101350B CN102101350B CN 201010604288 CN201010604288A CN102101350B CN 102101350 B CN102101350 B CN 102101350B CN 201010604288 CN201010604288 CN 201010604288 CN 201010604288 A CN201010604288 A CN 201010604288A CN 102101350 B CN102101350 B CN 102101350B
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Abstract
The invention discloses a precision mold for a small-spiral-angle duplex gear. The precision mold comprises a fixed mold seat plate, a pouring gate template, a fixed template, a movable template, a first base plate, a second base plate and an open template, wherein the fixed template is provided with an upper die cavity; the movable template is provided with a lower die cavity which is opposite to the upper die cavity; the upper die cavity is embedded with a shaft insert; a second-stage gear insert is embedded above the lower die cavity; a first-stage gear insert and a bottom surface insert are embedded in the lower die cavity; connecting pieces are fixed at the bottoms of the first-stage gear insert and the bottom surface insert; screw rods are fixed at the bottoms of the connecting pieces; the lower ends of the screw rods are fixed on the second base plate through pressure plates; and nuts fixed on the first base plate are in movable fit with the screw rods. Through cooperation of the screw rods and the nuts, the first-stage gear insert and the bottom surface insert are driven to rotate along the gear spiral angle of the first-stage gear insert during mold opening linear movement of an injection molding machine, so that a product is de-molded. The precision mold has the advantages of short period, small mold profile and reliable action.
Description
Technical field
The present invention relates to a kind of mould for the manufacture of the low pitch angle duplicate gear, specifically a kind of can be when the straight line die sinking can synchronous rotary, make the mould of low pitch angle duplicate gear automatic demoulding.
Background technology
The helical gear moulding is owing to having helical angle, so demoulding difficulty is higher, to the mold releasability of single helical gear the time, usually can adopt push rod to move up, and makes helical gear promote gear and rotates mould.As Patent Office of the People's Republic of China's on July 7th, 2004 disclosed Granted publication number be " plastic beveled wheel mold " of " CN2623438 ", it is by core, tapered core, gear ring, mold insert, moving platen, fixed head, backing plate, push rod forms, core is contained in tapered core, and gear ring is connected with mold insert with bearing pin, and mold insert is enclosed within on tapered core, and coordinate with moving platen by bearing, fixed head be contained in moving platen below, and be connected with backing plate with bearing pin, push rod passes backing plate and tapered core.But to the duplicate gear shaping and demoulding of low pitch angle the time, this mould just can't be completed the demoulding, must be first by spiral demolding mechanism to the demoulding of one-level gear, then by modes such as push rods to the secondary gear demoulding.Now spiral demolding mechanism commonly used is oil cylinder, gear, rackwork, or the mechanism of motor, sprocket wheel, chain.These several spiral demolding mechanisms commonly used are all after injection machine is opened fully, then by the oil hydraulic system effect, drive the motion of oil cylinder or motor and complete the screw demoulding.Like this will be more time-consuming in the process of the demoulding, and this spiral demolding mechanism anglec of rotation is difficult to coincide with the helical angle of duplicate gear, therefore product damaged when the demoulding, cause poor product quality, qualification rate low.
Summary of the invention
The object of the invention is to defective and deficiency for above-mentioned prior art, a kind of molding cycle is short, die shape is little, the mould that can make low pitch angle duplicate gear moulding automatic demoulding of reliable in action for people provide, and the good product quality of producing, qualification rate are high.
the technical solution used in the present invention is for achieving the above object: the precision die that should be used for the low pitch angle duplicate gear, it comprises the top clamping plate that sets gradually, the cast gate template, solid plate, moving platen, the first backing plate, the second backing plate and die sinking plate, wherein moving platen and the first backing plate are fixed, the second backing plate and die sinking plate are fixed, be provided with upper impression on described solid plate, be provided with the lower impressions relative with upper impression on moving platen, be embedded with the axle mold insert on upper impression, be embedded with the secondary gear mold insert above lower impressions, be embedded with one-level gear mold insert and bottom surface mold insert in lower impressions, one-level gear mold insert is set in the outside of bottom surface mold insert, by upper impression, lower impressions, the axle mold insert, one-level gear mold insert, the space that secondary gear mold insert and bottom surface mold insert surround is the die cavity of duplicate gear, communicate with die cavity by the runner that is opened on solid plate and upper impression at the sprue bush on the cast gate template, the bottom of described one-level gear mold insert and bottom surface mold insert is set with connector, be interspersed in the sidewall that upper pin on connector is horizontally through one-level gear mold insert and bottom surface mold insert, the bottom of connector is plugged with screw mandrel, be interspersed in the sidewall that lower bearing pin on connector is horizontally through screw mandrel, the lower end of this screw mandrel is fixed on the second backing plate by pressing plate, the nut of fixing on the first backing plate coordinates with screw mandrel is movable, be provided with top plate guide post and support column in the die sinking plate, be set on top plate guide post with the guide pin bushing in the top board of push rod, be provided with in the bottom of top board the jacking block that is interspersed in the die sinking plate, screw mandrel is passed in described push rod upper end, connector, relative with cavity bottom after the mold insert of bottom surface.
The helical angle of described screw mandrel and nut is consistent with the gear helical angle direction of one-level gear mold insert.
Be installed with the location mold insert on the upper surface of described connector, the upper end of this location mold insert is taper seat, offers the detent relative with locating mold insert in the bottom of lower impressions.
The upper end of described push rod offers location blind hole relative bottom the axle mold insert.
Be fixed with release link on described top board, the upper surface that this release link upper end is passed after the second backing plate, the first backing plate with moving platen interlocks, and is set with back-moving spring on release link, and back-moving spring is supported between top board and the first backing plate.
The sidewall of described upper impression is interspersed with cooling water pipe, is interspersed with lower cooling water pipe at the sidewall of lower impressions.
Be interspersed with the first pull bar on described solid plate, this the first pull bar top is connected with the cast gate template by screw thread, the bolt head activity of its bottom is interspersed in the through hole of moving platen and the first backing plate, also be provided with the first spring that is sleeved on the first pull bar in solid plate, the upper end of this first spring and cast gate template offset.
Be interspersed with the second pull bar on described the first backing plate, be connected with the second backing plate by screw thread bottom this second pull bar, the bolt head activity at its top is interspersed in the counterbore of moving platen, also be provided with the second spring that is sleeved on the second pull bar in the first backing plate, the lower end of this second spring and the second backing plate offset.
Described solid plate sidewall is installed with the die sinking accessory plate, the lower end of this die sinking accessory plate is provided with stopper slot, described the second backing plate sidewall is provided with the limited block relative with stopper slot, the bottom of limited block is equipped with Compress Spring, sidewall at limited block is provided with chute with the level, is installed with the limited screw that head stretches into chute on the second backing plate.
The outside of described die sinking accessory plate is coated with baffle plate, and this baffle plate fixes by screw and the first backing plate.
The present invention is by the cooperation of screw mandrel and nut, when the rectilinear motion of mould die sinking, screw mandrel can drive the gear helical angle direction that connector, one-level gear mold insert, bottom surface mold insert prolong one-level gear mold insert and synchronously rotate, one-level gear mold insert and the one-level gear of product are separated, complete the demoulding to the one-level gear.Then move up together by promotion jacking block drive top board, push rod, product is slowly released from the secondary gear mold insert, product can prolong the helical angle of self and rotate, thereby completes the demoulding of secondary gear.The restoring force of back-moving spring can make top board and push rod reset after the secondary gear demoulding is completed.The present invention has advantages of that molding cycle is short, die shape is little, reliable in action, and good product quality, the qualification rate of producing are high.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the upper and lower die cavity part partial enlarged drawing of Fig. 1.
The specific embodiment
As shown in Figure 1 and Figure 2, the present invention is a kind of precision die for the low pitch angle duplicate gear, it comprises top clamping plate 44, cast gate template 3, solid plate 5, moving platen 7, the first backing plate 8, the second backing plate 10 and the die sinking plate 14 that sets gradually, wherein moving platen 7 and the first backing plate 8 are fixing, and the second backing plate 10 is fixing with die sinking plate 14.Therefore being the first die joint PL1 between cast gate template 3 and solid plate 5, is the second die joint PL2 between solid plate 5 and moving platen 7, is three parting line PL3 between the first backing plate 8 and the second backing plate 10.The first guide rod 27 is installed on top clamping plate 44, the lower end activity of this first guide rod 27 is interspersed in solid plate 5, moving platen 7, the first backing plate 8 and the second backing plate 10, be fixed with the second guide rod 38 on the second backing plate 10, the movable upper end of this second guide rod 38 is interspersed in the first backing plate 8, moving platen 7 and solid plate 5.The first guide rod 27 and the second guide rod 38 can prevent that mould from misplacing when the opening and closing mould.Be interspersed with the first pull bar 16 on described solid plate 5, this the first pull bar 16 tops are connected with cast gate template 3 by screw thread, the bolt head activity of its bottom is interspersed in the through hole of moving platen 7 and the first backing plate 8, also be provided with the first spring 15 that is sleeved on the first pull bar 16 in solid plate 5, the upper end of this first spring 15 and cast gate template 3 offset, when mould die sinking campaign, the restoring force of the first spring 15 can make the first die joint PL1 open.When the first die joint PL1 is opened to a certain degree, bottom bolts head and the solid plate 5 of the first pull bar 16 interlock, this moment, solid plate 5 no longer moved, moving platen 7, the first backing plate 8, the second backing plate 10 and 14 of die sinking plates continue mobile, and the second die joint PL2 between solid plate 5 and moving platen 7 is opened.Described solid plate 5 sidewalls are installed with die sinking accessory plate 18, the lower end of this die sinking accessory plate 18 is provided with stopper slot 24, described the second backing plate 10 sidewalls are provided with the limited block 22 relative with stopper slot 24, the bottom of limited block 22 is equipped with Compress Spring 21, sidewall at limited block 22 is provided with chute with the level, be installed with the limited screw 20 that head stretches into chute on the second backing plate 10, deviate to prevent limited block 22.When the second die joint PL2 was opened to a certain degree, limited block 22 can offset with the lower edge of stopper slot 24.The outside of described die sinking accessory plate 18 is coated with baffle plate 23, and this baffle plate 23 fixes by screw and the first backing plate 10, in order to prevent the lower end perk of die sinking accessory plate 18.be interspersed with the second pull bar 17 on described the first backing plate 8, this the second pull bar 17 bottoms are connected with the second backing plate 10 by screw thread, the bolt head activity at its top is interspersed in the counterbore of moving platen 7, also be provided with the second spring 19 that is sleeved on the second pull bar 17 in the first backing plate 8, the lower end of this second spring 19 and the second backing plate 10 offset, when mould die sinking campaign, the restoring force of the second spring 19 can make moving platen 7 and the first backing plate 8 move up with respect to the second backing plate 10, three parting line PL3 is opened, when the bolt head of the upper end of the second pull bar 17 and the counterbore on moving platen 7 interlock, three parting line PL3 opens fully.
Be provided with at least one upper impression 4 on described solid plate 5, be provided with the lower impressions 6 relative with upper impression 4 on moving platen 7.Be embedded with axle mold insert 31 on upper impression 4, be embedded with secondary gear mold insert 32 above lower impressions 6, be embedded with one-level gear mold insert 33 and bottom surface mold insert 34 in lower impressions 6, one-level gear mold insert 33 is set in the outside of bottom surface mold insert 34.The space that is surrounded by upper impression 4, lower impressions 6, axle mold insert 31, one-level gear mold insert 33, secondary gear mold insert 32 and bottom surface mold insert 34 is the die cavity 28 of duplicate gear.Communicate with die cavity 28 by the runner 2 that is opened on solid plate 5 and upper impression 4 at the sprue bush 1 on cast gate template 3, from hot melting plastic cooling forming after runner 2 arrives die cavities 28 of sprue bush 1 injection.The sidewall of described upper impression 4 is interspersed with cooling water pipe 29, is interspersed with lower cooling water pipe 30 at the sidewall of lower impressions 6, passes into cooling water at upper and lower cooling water pipe 29,30 and can make the product in die cavity 28 cooling fast.Product lower end after moulding is that one-level gear, upper end are secondary gear.
As shown in Figure 3, the bottom of described one-level gear mold insert 33 and bottom surface mold insert 34 is set with connector 36, be interspersed in the sidewall that upper pin 35 on connector 36 is horizontally through one-level gear mold insert 33 and bottom surface mold insert 34, the bottom of connector 36 is plugged with screw mandrel 40, be interspersed in the sidewall that lower bearing pin 37 on connector 36 is horizontally through screw mandrel 40, make screw mandrel 40, connector 36, one-level gear mold insert 33 and the bottom surface mold insert 34 can synchronization action.The lower end of screw mandrel 40 is fixed on the second backing plate 10 by pressing plate 41, and the nut 39 of fixing on the first backing plate 8 coordinates with screw mandrel 40 is movable.The helical angle of described screw mandrel is consistent with the gear helical angle direction of one-level gear mold insert, angle when therefore screw mandrel 40 rotates and the helical angle of one-level gear are coincide, screw mandrel 40 drives connector 36, one-level gear mold insert 33,34 rotations of bottom surface mold insert, can make the one-level gear can the complete demoulding, can effectively avoid product to sustain damage when the demoulding.Be installed with location mold insert 43 on the upper surface of described connector 36, the upper end of this location mold insert 43 is taper seat, offers the detent relative with locating mold insert 43 in the bottom of lower impressions 6.By coordinating of location mold insert 43 and detent, can accurately locate the position of one-level gear mold insert 33 and bottom surface mold insert 34, make the product size of production meet standard.
Be provided with top plate guide post 25 and support column 42 in die sinking plate 14, be set in top plate guide post 26 with the guide pin bushing in the top board 12 of push rod 26, be provided with the jacking block 13 that is interspersed in die sinking plate 14 in the bottom of top board 12, described push rod 26 upper ends are passed after screw mandrel 40, connector 36, bottom surface mold insert 34 relative with die cavity 28 bottoms.Offer the location blind hole relative with axle mold insert 31 bottoms in the upper end of push rod 26, the accurate position of locating shaft mold insert 31, when preventing from injecting, the product axis hole is eccentric.Be fixed with on described top board 12 and reset 9, after the second backing plate 10, the first backing plate 8 are passed in this release link 9 upper ends and the upper surface of moving platen 7 interlocks, therefore when three parting line PL3 opened, top board 12 and moving platen 7 synchronizing movings can guarantee that push rod 26 is affixed bottom product.After the demoulding of one-level gear, by promoting jacking block 13, top board 12 drive push rods 26 are moved up, thereby with the slow jack-up of product, product can prolong the helical angle of self and rotate, thereby complete the demoulding of secondary gear.Top board 12 is set with back-moving spring 11 with moving platen 7 on release link 9, back-moving spring 11 is supported between top board 12 and the first backing plate 8, and the restoring force of back-moving spring 11 can make top board 12 and push rod 13 reset after the secondary gear demoulding is completed.
When die sinking, mould drives die sinking plate 14 and moves down, and this moment, the first die joint PL1 opened, and makes sprue bush 1 demoulding under the first spring 15 restoring force effects.When the first die joint PL1 opens to the bottom bolts head of the first pull bar 16 and solid plate 5 and interlocks, solid plate 5 can't continue mobile, this moment is under the mould opening force effect, the second die joint PL2 opens, until the lower edge of the limited block 22 of the second backing plate 10 sidewalls and the stopper slot 24 on die sinking accessory plate 18 offsets.This moment, upper impression 4 was also separated with lower impressions 6, and axle mold insert 31 is thrown off with upper impression 4 and product center, and product is stayed in lower impressions 6.Under the effect of the second spring 19 restoring forces, three parting line PL3 opens, moving platen 7, the first backing plate 8 and top board 12 synchronously move up, effect due to screw mandrel 40 and nut 39 screw threads, the gear helical angle that screw mandrel 40 drive connectors 36, one-level gear mold insert 33, bottom surface mold insert 34 prolong one-level gear mold insert 33 synchronously rotates, one-level gear mold insert 33 and the one-level gear of product are separated, complete the demoulding to the one-level gear.Then jacking block 13 drives top board 12, push rod 26 moves up together by promoting, and product is slowly released from secondary gear mold insert 32, and product can prolong the helical angle of self and rotate, thereby completes the demoulding of secondary gear.Top board 12 is set with back-moving spring 11 with moving platen 7 on release link 9, back-moving spring 11 is supported between top board 12 and the first backing plate 8, and the restoring force of back-moving spring 11 can make top board 12 and push rod 13 reset after the secondary gear demoulding is completed.
Claims (10)
1. precision die that is used for the low pitch angle duplicate gear, it comprises top clamping plate (44) the cast gate template (3) that sets gradually, solid plate (5), moving platen (7), the first backing plate (8), the second backing plate (10) and die sinking plate (14), wherein moving platen (7) is fixing with the first backing plate (8), the second backing plate (10) is fixing with die sinking plate (14), be provided with at least one upper impression (4) on described solid plate (5), be provided with the lower impressions (6) relative with upper impression (4) on moving platen (7), be embedded with axle mold insert (31) on upper impression (4), be embedded with secondary gear mold insert (32) above lower impressions (6), be embedded with one-level gear mold insert (33) and bottom surface mold insert (34) in lower impressions (6), one-level gear mold insert (33) is set in the outside of bottom surface mold insert (34), by upper impression (4), lower impressions (6), axle mold insert (31), one-level gear mold insert (33), the space that secondary gear mold insert (32) and bottom surface mold insert (34) surround is the die cavity (28) of duplicate gear, communicate with die cavity (28) by the runner (2) that is opened on solid plate (5) and upper impression (4) at the sprue bush (1) on cast gate template (3), the bottom that it is characterized in that described one-level gear mold insert (33) and bottom surface mold insert (34) is set with connector (36), with the sidewall that is interspersed in upper pin (35) on connector (36) and is horizontally through one-level gear mold insert (33) and bottom surface mold insert (34), the three is fixed, be plugged with screw mandrel (40) in the bottom of connector (36), be fixed together with the sidewall that is interspersed in lower bearing pin (37) on connector (36) and is horizontally through screw mandrel (40), the lower end of this screw mandrel (40) is fixed on the second backing plate (10) by pressing plate (41), nut (39) coordinates with screw mandrel (40) is movable, be provided with top plate guide post (25) and support column (42) in die sinking plate (14), be set on top plate guide post (25) with the guide pin bushing in the top board (12) of push rod (26), be provided with the jacking block (13) that is interspersed in die sinking plate (14) in the bottom of top board (12), screw mandrel (40) is passed in described push rod (26) upper end, connector (36), relative bottom die cavity (28) after bottom surface mold insert (34).
2. the precision die for the low pitch angle duplicate gear according to claim 1, is characterized in that the helical angle of described screw mandrel (40) and nut (39) is consistent with the gear helical angle direction of one-level gear mold insert (33).
3. the precision die for the low pitch angle duplicate gear according to claim 1, it is characterized in that being installed with on the upper surface of described connector (36) location mold insert (43), the upper end of this location mold insert (43) is taper seat, offers the detent relative with locating mold insert (43) in the bottom of lower impressions (7).
4. the precision die for the low pitch angle duplicate gear according to claim 1, is characterized in that the upper end of described push rod (26) offers location blind hole relative bottom axle mold insert (31).
5. the precision die for the low pitch angle duplicate gear according to claim 1, it is characterized in that being fixed with on described top board (12) release link (9), after the second backing plate (10), the first backing plate (8) are passed in this release link (9) upper end and the upper surface of moving platen (7) interlocks, be set with back-moving spring (11) on release link (9), this back-moving spring (11) is supported between top board (12) and the first backing plate (8).
6. according to claim 1 and 2 or 3 or 4 or 5 described precision dies for the low pitch angle duplicate gear, the sidewall that it is characterized in that described upper impression (4) is interspersed with cooling water pipe (29), is interspersed with lower cooling water pipe (30) at the sidewall of lower impressions (6).
7. the precision die for the low pitch angle duplicate gear according to claim 6, it is characterized in that being interspersed with on described solid plate (5) the first pull bar (16), this the first pull bar (16) top is connected with cast gate template (3) by screw thread, the bolt head activity of its bottom is interspersed in the through hole of moving platen (7) and the first backing plate (8), also be provided with the first spring (15) that is sleeved on the first pull bar (16) in solid plate (5), the upper end of this first spring (15) and cast gate template (3) offset.
8. the precision die for the low pitch angle duplicate gear according to claim 7, it is characterized in that being interspersed with on described the first backing plate (8) the second pull bar (17), be connected with the second backing plate (10) by screw thread bottom this second pull bar (17), the bolt head activity at its top is interspersed in the counterbore of moving platen (7), also be provided with the second spring (19) that is sleeved on the second pull bar (17) in the first backing plate (8), the lower end of this second spring (19) and the second backing plate (10) offset.
9. the precision die for the low pitch angle duplicate gear according to claim 8, it is characterized in that described solid plate (5) sidewall is installed with die sinking accessory plate (18), the lower end of this die sinking accessory plate (18) is provided with stopper slot (24), described the second backing plate (10) sidewall is provided with the limited block (22) relative with stopper slot (24), the bottom of limited block (22) is equipped with Compress Spring (21), sidewall at limited block (22) is provided with chute with the level, be installed with the limited screw (20) that head stretches into chute on the second backing plate (10).
10. the precision die for the low pitch angle duplicate gear according to claim 9, is characterized in that the outside of described die sinking accessory plate (18) is coated with baffle plate (23), and this baffle plate (23) fixes by screw and the first backing plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010604288 CN102101350B (en) | 2010-12-24 | 2010-12-24 | Precision mold for small-spiral-angle duplex gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010604288 CN102101350B (en) | 2010-12-24 | 2010-12-24 | Precision mold for small-spiral-angle duplex gear |
Publications (2)
| Publication Number | Publication Date |
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| CN102101350A CN102101350A (en) | 2011-06-22 |
| CN102101350B true CN102101350B (en) | 2013-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010604288 Expired - Fee Related CN102101350B (en) | 2010-12-24 | 2010-12-24 | Precision mold for small-spiral-angle duplex gear |
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| CN (1) | CN102101350B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527988A (en) * | 2011-11-30 | 2012-07-04 | 深圳市大富科技股份有限公司 | Demolding mechanism, demolding method and die-casting device |
| CN104097293B (en) * | 2013-04-03 | 2017-04-05 | 广州市鑫富塑胶有限公司 | The mould of quincunx townhouse formula plastic pin |
| CN104875332A (en) * | 2014-02-28 | 2015-09-02 | 汉达精密电子(昆山)有限公司 | Mold ejection structure |
| CN103991183B (en) * | 2014-05-06 | 2017-02-08 | 昆山一邦泰汽车零部件制造有限公司 | Mold suitable for rotary demolding of workpiece having inclined thread structure |
| CN105180695B (en) * | 2015-11-04 | 2017-04-12 | 天津商业大学 | Loop heat pipe cooler |
| CN107984709B (en) * | 2017-12-11 | 2019-11-22 | 东莞景丰塑胶制品有限公司 | A kind of injection mold that can efficiently demould |
| CN108262920A (en) * | 2018-01-23 | 2018-07-10 | 湖北工业大学 | The combinatory core and injection mold of moulding plastics gear |
| CN109228150A (en) * | 2018-08-09 | 2019-01-18 | 合肥天物金佰包装制品有限公司 | A kind of production mould with internal screw thread EPS package |
| CN109760241B (en) * | 2019-01-31 | 2021-04-30 | 宁波拓普集团股份有限公司 | Rubber bushing vulcanizing mold |
| CN111361104B (en) * | 2020-04-20 | 2022-05-10 | 马鞍山市德钢模具制造有限公司 | Injection mold with stable location |
| CN114248403A (en) * | 2021-12-17 | 2022-03-29 | 浙江工商职业技术学院 | Die and forming method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2623438Y (en) * | 2003-06-28 | 2004-07-07 | 遵义群建塑胶制品有限公司 | Plastic helical gear mould |
| CN101327636A (en) * | 2008-07-08 | 2008-12-24 | 宁波双林模具有限公司 | Screw rod plastic beveled wheel mold |
| CN201291572Y (en) * | 2008-11-28 | 2009-08-19 | 遵义群建塑胶制品有限公司 | Secondary liftout mechanism of plastic beveled wheel injection mold |
| CN201913763U (en) * | 2010-12-24 | 2011-08-03 | 宁波双林模具有限公司 | Precision die for duplicate gears with small spiral angles |
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2010
- 2010-12-24 CN CN 201010604288 patent/CN102101350B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2623438Y (en) * | 2003-06-28 | 2004-07-07 | 遵义群建塑胶制品有限公司 | Plastic helical gear mould |
| CN101327636A (en) * | 2008-07-08 | 2008-12-24 | 宁波双林模具有限公司 | Screw rod plastic beveled wheel mold |
| CN201291572Y (en) * | 2008-11-28 | 2009-08-19 | 遵义群建塑胶制品有限公司 | Secondary liftout mechanism of plastic beveled wheel injection mold |
| CN201913763U (en) * | 2010-12-24 | 2011-08-03 | 宁波双林模具有限公司 | Precision die for duplicate gears with small spiral angles |
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| CN102101350A (en) | 2011-06-22 |
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