CN203622840U - Injection mould assembly of plastic worm wheel - Google Patents
Injection mould assembly of plastic worm wheel Download PDFInfo
- Publication number
- CN203622840U CN203622840U CN201320682087.6U CN201320682087U CN203622840U CN 203622840 U CN203622840 U CN 203622840U CN 201320682087 U CN201320682087 U CN 201320682087U CN 203622840 U CN203622840 U CN 203622840U
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- Prior art keywords
- slide block
- oblique top
- worm gear
- press strip
- mould
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- 239000004033 plastic Substances 0.000 title claims abstract description 74
- 229920003023 plastic Polymers 0.000 title claims abstract description 74
- 238000002347 injection Methods 0.000 title claims abstract description 36
- 239000007924 injection Substances 0.000 title claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 238000001746 injection moulding Methods 0.000 claims abstract description 14
- 238000005267 amalgamation Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010923 batch production Methods 0.000 abstract 1
- 238000003672 processing method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 239000002991 molded plastic Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000003068 static effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Moulds For Moulding Plastics Or The Like (AREA)
- Gears, Cams (AREA)
Abstract
The utility model provides an injection mould assembly of a plastic worm wheel. The injection mould assembly comprises a fixed mould part and a movable mould part and an ejection mechanism, wherein the movable mould part comprises a plurality of lateral sliding mechanisms which are arrayed circumferentially; after injection molding, a plastic worm wheel finished product is ejected out; the end parts, which are close to the circle center, of the lateral sliding mechanisms are in a sector tooth shape; a cavity of a plastic worm wheel mould is composed of the sector tooth-shaped end parts of the plurality of lateral sliding mechanisms, a front mould insert of the fixed mould part and a rear mould insert of the movable mould part. The injection mould provided by the utility model is simple in structure; processing methods are diversified; the precision of a mould part is easy to control, the processing period is short and the cost is low; more importantly, the large-batch production can be realized on an injection molding machine, the production precision is high and the size is stable.
Description
Technical field
The utility model relates to a kind of injection mold component, relates in particular to the injection molding injection mold component of a kind of plastics worm gear.
Background technology
Plastics worm gear is widely used in modern industry, and plastics worm gear and worm screw pairing are commonly used to transmit motion and the power between two alternating axis.It is large that worm-and-wheel gear has bearing capacity, has very large gearratio and axial force, compact conformation, and stable drive, vibrates littlely, and has the features such as auto-lock function.
The manufacture of plastics worm gear at present mainly realizes by following three kinds of modes:
1. use worm gear hob to process on gear-hobbing machine, worm gear hob need to be according to the parameter design of plastics worm gear, and the required precision of the lathe to manufacture hobboing cutter and processing plastic worm gear is all very high.The customization hobboing cutter cycle is long, single product processing, and clamping is consuming time, and efficiency is low, and cost is high.The processing of single product clamping also can produce clamping error, causes product size inconsistent, and Product Precision can not guarantee, can not meet existing market requirement.
2. for cost-saving and enhance productivity, most of producer changes plastics worm gear into plastic beveled wheel and coordinates transmission with worm screw.Helical teeth contacts with worm screw as some contact, characteristicness be bearing capacity little, rub large, fragile, and in machine applications, require to have the reductor of very strong auto-lock function, such as hoist engine, conveying equipment etc., so helical gear can not replace worm gear under many circumstances.
3. have partly plastic worm gear to utilize mould manufacture in the little situation of concave surface profile of tooth back-off, and gear ring obtains with electrocasting method, product takes to force pushing method depanning.It is long that this mode is manufactured the gear ring cycle, and cost is high.Because plastics worm gear product is forced to eject generation mechanically deform, the helical angle of plastics worm gear and profile of tooth can change, and Product Precision is poor.
Utility model content
The purpose of this utility model is to provide a kind of injection mold component of producing high accuracy plastics worm gear in enormous quantities of realizing.
The technical solution adopted in the utility model is:
The injection mold component of plastics worm gear, it comprises cover half part and dynamic model part, described dynamic model part comprises some lateral slidings mechanism, is circumferential arrangement, and after injection moulding, the ejecting mechanism that plastics worm gear finished product is ejected; Described lateral sliding mechanism is sector shape near the end in the center of circle, and sector end, the front cavity of cover half part and the rear cavity of dynamic model part of described some lateral sliding mechanism form the die cavity of described plastics worm gear mould.
Preferably, described injection mold component, described lateral sliding mechanism is oblique top, the head of described oblique top is sector shape, the head both sides of described oblique top are the inclined-plane coordinating with adjacent oblique top, and the sector head, the front cavity of cover half part and the rear cavity of dynamic model part that are some oblique tops of circumferential arrangement are combined into the die cavity of described plastics worm gear mould; The back of described oblique top is provided with T shape projection, and the guiding angle of oblique top is 5 °～10 ° with respect to the direction that ejects of ejecting mechanism away from the center of described die cavity; Described oblique top is placed in oblique top gathering sill, and described oblique top gathering sill is provided with the T shape projection amalgamation with oblique top, and has the T connected in star of identical guiding angle with oblique top; Described ejecting mechanism is secondary ejecting mechanism, it comprises the upper ejector plate and the lower liftout plate that are installed on base plate, between described upper ejector plate and lower liftout plate, be provided with shutter, described upper ejector plate is fixed with the first push rod for ejecting the plastics worm gear after injection moulding, and described lower liftout plate is fixed with the second push rod for ejection pitched roof.
Preferably, described injection mold component, described oblique top arranges position-limitting pin, in described oblique top gathering sill, is provided with pin stopper slot.
Preferably, described injection mold component, described lateral sliding mechanism is slide block, the head of described slide block is sector shape, the head both sides of slide block are the inclined-plane coordinating with adjacent sliders, and the sector head, the front cavity of cover half part and the rear cavity of dynamic model part that are some slide blocks of circumferential arrangement are combined into the die cavity of described plastics worm gear mould; Described slide block is placed in slider guide groove, and described slider guide groove leaves the space of sliding for slide block; Described slide block middle part is provided with oblique square groove, and described oblique square groove prolongs away from the center position of described die cavity and extends slide block inside from described slider top; The lower end of the front cavity of described cover half part is fixed with the latch segment with the oblique square groove amalgamation of slide block.
Preferably, described injection mold component, the oblique square groove both sides of described slide block arrange the first press strip groove and the second press strip groove, the first annular press strip and the second annular press strip are placed in respectively in two annular press strip grooves of the first press strip groove of the some slide blocks that are circumferential arrangement and the second press strip groove composition, and in described the first press strip groove and the second press strip groove, leave the slide block required space of sliding.
Preferably, described injection mold component, the bottom of described slide block arranges a circular pit, and described slider guide trench bottom arranges a location ripple pearl screw coordinating with circular pit; Matched moulds state, the sliding distance of slide block when circular pit is the demoulding with the distance of location ripple pearl screw.
The beneficial effects of the utility model are:
The sector end of some lateral sliding of the present utility model mechanism is combined into the outline of plastics worm gear, the shared position of lateral sliding mechanism ranking in injection mold is less, in the situation that product consumption is large, to implement a multi-cavity mold and more save injection moulding cost, benefit is higher.The utility model injection mold structure is simple, and mould parts precision is easily controlled in processing mode variation, and the process-cycle is short, and cost is low, the more important thing is and can on injection machine, realize large batch of production, and Product Precision is high, dimensionally stable.
Accompanying drawing explanation
Fig. 1 is the side diagram of a plastics worm gear product quoted of the utility model;
Fig. 2 is the schematic diagram that the some lateral sliding Mechanism Combinations that are circumferential arrangement of the utility model become a plastics worm gear product outline;
Fig. 3 is the cutaway view of die assembly matched moulds state in the utility model embodiment 1;
Fig. 4 is the cutaway view of die assembly demoulding state in the utility model embodiment 1;
Fig. 5 is the schematic diagram of oblique top in the utility model embodiment 1;
Fig. 6 is the schematic diagram of position-limitting pin in the utility model embodiment 1;
Fig. 7 is the schematic diagram that in the utility model embodiment 1, some lifter combinations that are circumferential arrangement become a plastics worm gear product outline;
Fig. 8 is the cutaway view of die assembly matched moulds state in the utility model embodiment 2;
Fig. 9 is the cutaway view of die assembly demoulding state in the utility model embodiment 2;
Figure 10 is the schematic diagram of slide block in the utility model embodiment 2;
Figure 11 is the schematic diagram of latch segment in the utility model embodiment 2;
Figure 12 is the schematic diagram of the first annular press strip in the utility model embodiment 2;
Figure 13 is the schematic diagram of the second annular press strip in the utility model embodiment 2;
Figure 14 is the schematic diagram that in the utility model embodiment 2, some slide blocks that are circumferential arrangement are combined into a plastics worm gear product outline.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail:
As shown in Figure 1, the utility model has been quoted a plastics worm gear 101 that needs injection moulding, and it comprises tooth top region 100, concave surface profile of tooth characteristic 103, front mould characteristic 104 and rear mold characteristic 102.
The injection moulding process of the utility model plastics worm gear is:
As shown in Figure 2, the injection mold component adopting according to the injection moulding manufacture method of described plastics worm gear, it comprises cover half part and dynamic model part, described dynamic model part comprises some lateral sliding mechanisms 201 that are circumferential arrangement, the concave surface profile of tooth characteristic 103(that described lateral sliding mechanism 201 is combined into plastics worm gear 101 near the sector end in the center of circle i.e. sector end of a lateral sliding mechanism forms some profiles of tooth of plastics worm gear, the whole profiles of tooth that have been combined to form plastics worm gears of the sector end of some lateral slidings mechanism and synthetic gear ring thereof).Sector end, the front cavity of cover half part and the rear cavity of dynamic model part of described some lateral sliding mechanism 201 forms the die cavity of described plastics worm gear mould.Described dynamic model part also comprises the ejecting mechanism after injection mo(u)lding, plastics worm gear finished product being ejected.
The quantity of described lateral sliding mechanism and the number of teeth of its sector end, tooth pitch, fan-shaped radian are by the number of teeth, the helical angle of concrete plastics worm gear product and determine in the situation that lateral sliding mechanism glide direction does not have back-off.For not affecting Product Precision, the split line of described lateral sliding mechanism on product is arranged on the tooth top region 100 of plastics worm gear profile of tooth, can not be arranged on the flank of tooth and affect the use of product.
Embodiment 1:
As shown in FIG. 3 to 7, described lateral sliding mechanism is oblique top 501, the head of described oblique top is sector shape, described oblique top head 502 both sides are the inclined-plane 503 coordinating with adjacent oblique top, and the oblique top head 502, the front cavity 301 of cover half part 401 and the rear cavity 302 of dynamic model part 402 that are the sector shape of some oblique tops 501 of circumferential arrangement are combined into the die cavity 303 of described plastics worm gear mould; The back 504 of described oblique top 501 is provided with T shape projection, and the guiding angle of oblique top 501 is 5 °～10 ° (preferably 8 °) with respect to the direction that ejects of ejecting mechanism away from the center of described die cavity 303; Described oblique top 501 is placed in oblique top gathering sill 304, and described oblique top gathering sill 304 is provided with the T shape projection amalgamation with oblique top 501, and has the T connected in star of identical guiding angle with oblique top 501; Described ejecting mechanism is secondary ejecting mechanism, it comprises the upper ejector plate and the lower liftout plate that are installed on base plate 305, between described upper ejector plate and lower liftout plate, be provided with shutter 308, described upper ejector plate is fixed with the first push rod 306 for ejecting the plastics worm gear after injection moulding, and described lower liftout plate is fixed with the second push rod 307 for ejection pitched roof.
Described upper ejector plate comprises being stacked and merges the upper ejector retainner plate 311 and the upper ejector retainner plate supporting plate 312 that are fixedly connected with; Described lower liftout plate comprises being stacked and merges the lower ejector retainner plate 313 and the lower ejector retainner plate supporting plate 314 that are fixedly connected with.
Described oblique top 501 arranges position-limitting pin 601, in described oblique top gathering sill 304, is provided with pin stopper slot 309.Preferred embodiment one end of described position-limitting pin 601 is helical form as one, can screw in the screw hole 505 that oblique top 501 lower ends arrange and make it fixing; The other end of described position-limitting pin 601 is interior hexagonal shape, is convenient to use outer hexagonal spanner dismounting.The processing of described die assembly is completed by precise numerical control machine, guarantees Product Precision.
The course of work of the present embodiment:
Under mould closure state, limit lock 310 locks A plate 315 and B plate 316, prevents that mould is shifted in injection moulding process, guarantees Product Precision.Injection machine nozzle is aimed at the sprue bushing on cover half part 401 tops, the plastic warp running gate system 318 of molten condition, glue-feeder 317 are injected in the die cavity 303 of described plastics worm gear mould, the concave surface profile of tooth characteristic 103 of the oblique top head 502 injection-moulded plastic worm gears of the sector shape of described some oblique tops 501, the front mould characteristic 104 of the front cavity 301 injection-moulded plastic worm gears of described cover half part 401, the rear mold characteristic 102 of the rear cavity 302 injection-moulded plastic worm gears of described dynamic model part 402, injection mo(u)lding.Cover half part 401 is opened, and injection machine top rod 319 contacts with upper ejector plate with lower liftout plate and ejects (now, shutter 308 closures, connect upper ejector plate and lower liftout plate) through base plate 305; Meanwhile, the second push rod 307 ejects plastics worm gear along oblique top gathering sill 304 ejection pitched roof 501, the first push rods 306.In the time that upper ejector plate upper surface touches square iron step 320, shutter 308 is stressed to be opened, lower liftout plate is static, oblique top 501 is static (in said process, oblique top departs from plastics worm gear gradually, and after oblique top is static, the head of oblique top thoroughly departs from plastics worm gear, position-limitting pin 601 is stuck in pin stopper slot 309, prevents oblique top 501 landings); Injection machine top rod 319 continues to eject, and the first push rod 306 continues to eject plastics worm gear 101, exceeds oblique top end face to plastics worm gear entirety, and now plastics worm gear can freely fall down or be taken out by manipulator.
Complete stripping process and take out after plastics worm gear, the preparation of the matched moulds operation of processing is next time: push down release link 321 and oblique top realization reset by A plate 315 and front cavity 301, injection mold is in matched moulds state, as Fig. 3.
Embodiment 2:
As shown in Fig. 8 to 14, described lateral sliding mechanism is slide block 106, the head of described slide block 106 is sector shape, slider head 107 both sides are the inclined-plane coordinating with adjacent sliders, and the slider head 107, the front cavity 301 of cover half part 401 and the rear cavity 302 of dynamic model part 402 that are the sector shape of some slide blocks of circumferential arrangement are combined into the die cavity 303 of described plastics worm gear mould; Described slide block 106 is placed in slider guide groove 801, and described slider guide groove 801 leaves the space of sliding for slide block 106; Described slide block middle part is provided with oblique square groove 110, and described oblique square groove 110 prolongs away from the center position of described die cavity 303 and extends slide block 106 inside from described slider top; Front cavity 301 lower ends of described cover half part 401 are fixed with the latch segment 802 with oblique square groove 110 amalgamations of slide block 106.
Oblique square groove 110 both sides of described slide block 106 arrange respectively the first press strip groove 105 and the second press strip groove 109, the first annular press strip 121 and the second annular press strip 131 are placed in respectively in the first press strip groove 105 of the some slide blocks 106 that are circumferential arrangement and two annular press strip grooves that the second press strip groove 109 forms, and required sliding space when leaving slide block 106 in described the first press strip groove 105 and the second press strip groove 109 and sliding, two annular press strips guarantee that slide blocks 106 steadily move.
The bottom of described slide block 106 arranges a circular pit 108, described slider guide groove 801 bottoms arrange a location ripple pearl screw 803 coordinating with circular pit 108, matched moulds state, the sliding distance of slide block 106 when circular pit 108 is the demoulding with the distance of location ripple pearl screw 803, its sliding position when limiting slide block 106 demoulding.
Described ejecting mechanism comprises the liftout plate being installed on base plate 305, and described liftout plate is fixed with the push rod 804 for ejecting the plastics worm gear after injection moulding.
Described liftout plate comprises being stacked and merges the ejector retainner plate 805 and the ejector retainner plate supporting plate 806 that are fixedly connected with.
The course of work of the present embodiment:
As shown in Figure 9, injection mold closure, injection machine nozzle is aimed at the sprue bushing on cover half part 401 tops, the plastic warp running gate system 318 of molten condition, glue-feeder 317 are injected in the die cavity 303 of described plastics worm gear mould, the concave surface profile of tooth characteristic 103 of the slider head 107 injection-moulded plastic worm gears of the sector shape of described some slide blocks 106, the front mould characteristic 104 of the front cavity 301 injection-moulded plastic worm gears of described cover half part 401, the rear mold characteristic 102 of the rear cavity 302 injection-moulded plastic worm gears of described dynamic model part 402, injection mo(u)lding.Cover half part 401 is opened, drive the fixing latch segment 802 in front cavity 301 lower ends to move upward, slide block 106 drags lower along continuous straight runs on the inclined-plane of latch segment 802 and leaves the concave surface parts of tooth 103 of plastics worm gear 101, location ripple pearl screw 803 snaps in the circular pit 108 of slide block 106 bottoms, and slide block is located.The push rod 804 that is fixed on liftout plate ejects plastics worm gear, exceeds slide block end face to plastics worm gear entirety, and now plastics worm gear can freely fall down or be taken out by manipulator.
Complete stripping process and take out after plastics worm gear, the preparation of the matched moulds operation of processing is next time: push down release link by A plate 315 and front cavity 301, latch segment 802 and tiltedly square groove 110 amalgamations, realize slide block and reset, and injection mold is in matched moulds state, as Fig. 8.
The foregoing is only preferably embodiment of the utility model, be not used for limiting practical range of the present utility model, the equivalence of in every case doing in protection domain of the present utility model changes and modifies, and all should think and fall in protection domain of the present utility model.
Claims (6)
1. the injection mold component of plastics worm gear, comprises cover half part and dynamic model part, it is characterized in that: described dynamic model part comprises:
Some lateral slidings mechanism, is circumferential arrangement; With
Ejecting mechanism, after injection mo(u)lding, ejects plastics worm gear finished product;
Described lateral sliding mechanism is sector shape near the end in the center of circle, and sector end, the front cavity of cover half part and the rear cavity of dynamic model part of described some lateral sliding mechanism form the die cavity of described plastics worm gear mould.
2. injection mold component according to claim 1, it is characterized in that: described lateral sliding mechanism is oblique top, the head of described oblique top is sector shape, the head both sides of described oblique top are the inclined-plane coordinating with adjacent oblique top, and the sector head, the front cavity of cover half part and the rear cavity of dynamic model part that are some oblique tops of circumferential arrangement are combined into the die cavity of described plastics worm gear mould; The back of described oblique top is provided with T shape projection, and the guiding angle of oblique top is 5 °～10 ° with respect to the direction that ejects of ejecting mechanism away from the center of described die cavity; Described oblique top is placed in oblique top gathering sill, and described oblique top gathering sill is provided with the T shape projection amalgamation with oblique top, and has the T connected in star of identical guiding angle with oblique top; Described ejecting mechanism is secondary ejecting mechanism, it comprises the upper ejector plate and the lower liftout plate that are installed on base plate, between described upper ejector plate and lower liftout plate, be provided with shutter, described upper ejector plate is fixed with the first push rod for ejecting the plastics worm gear after injection moulding, and described lower liftout plate is fixed with the second push rod for ejection pitched roof.
3. injection mold component according to claim 2, is characterized in that: described oblique top arranges position-limitting pin, in described oblique top gathering sill, is provided with pin stopper slot.
4. injection mold component according to claim 1, it is characterized in that: described lateral sliding mechanism is slide block, the head of described slide block is sector shape, the head both sides of slide block are the inclined-plane coordinating with adjacent sliders, and the sector head, the front cavity of cover half part and the rear cavity of dynamic model part that are some slide blocks of circumferential arrangement are combined into the die cavity of described plastics worm gear mould; Described slide block is placed in slider guide groove, and described slider guide groove leaves the space of sliding for slide block; Described slide block middle part is provided with oblique square groove, and described oblique square groove is from described slider top along extending slide block inside away from the center position of described die cavity; The lower end of the front cavity of described cover half part is fixed with the latch segment with the oblique square groove amalgamation of slide block.
5. injection mold component according to claim 4, it is characterized in that: the oblique square groove both sides of described slide block arrange the first press strip groove and the second press strip groove, the first annular press strip and the second annular press strip are placed in respectively in two annular press strip grooves of the first press strip groove of the some slide blocks that are circumferential arrangement and the second press strip groove composition, and in described the first press strip groove and the second press strip groove, leave the slide block required space of sliding.
6. according to the injection mold component described in claim 4 or 5, it is characterized in that: the bottom of described slide block arranges a circular pit, described slider guide trench bottom arranges a location ripple pearl screw coordinating with circular pit; Matched moulds state, the sliding distance of slide block when circular pit is the demoulding with the distance of location ripple pearl screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320682087.6U CN203622840U (en) | 2013-10-30 | 2013-10-30 | Injection mould assembly of plastic worm wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320682087.6U CN203622840U (en) | 2013-10-30 | 2013-10-30 | Injection mould assembly of plastic worm wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203622840U true CN203622840U (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320682087.6U Expired - Lifetime CN203622840U (en) | 2013-10-30 | 2013-10-30 | Injection mould assembly of plastic worm wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203622840U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522501A (en) * | 2013-10-30 | 2014-01-22 | 深圳市海翔铭实业有限公司 | Injection molding method of plastic worm wheel and injection mold assembly |
| CN105383015A (en) * | 2015-11-24 | 2016-03-09 | 芜湖市万华塑料制品有限公司 | Insulation framework adjusting type injection mold |
-
2013
- 2013-10-30 CN CN201320682087.6U patent/CN203622840U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522501A (en) * | 2013-10-30 | 2014-01-22 | 深圳市海翔铭实业有限公司 | Injection molding method of plastic worm wheel and injection mold assembly |
| CN105383015A (en) * | 2015-11-24 | 2016-03-09 | 芜湖市万华塑料制品有限公司 | Insulation framework adjusting type injection mold |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Injection mould assembly of plastic worm wheel Effective date of registration: 20191128 Granted publication date: 20140604 Pledgee: Shenzhen hi tech investment small loan Co.,Ltd. Pledgor: SHENZHEN HISYM INDUSTRY Co.,Ltd. Registration number: Y2019440020029 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |
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| CX01 | Expiry of patent term |