CN214395190U - High-precision helical gear injection mold - Google Patents
High-precision helical gear injection mold Download PDFInfo
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- CN214395190U CN214395190U CN202023204768.0U CN202023204768U CN214395190U CN 214395190 U CN214395190 U CN 214395190U CN 202023204768 U CN202023204768 U CN 202023204768U CN 214395190 U CN214395190 U CN 214395190U
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Abstract
The utility model provides a high accuracy helical gear injection mold, include: the mould comprises an upper mould plate, a lower mould base, a lower mould plate, an upper mould kernel component, a lower mould kernel component and a material pushing mechanism, wherein the upper mould kernel component comprises an upper mould core, an upper mould core and at least one first positioning column, and a first cambered surface is arranged on the top surface of the first positioning column. The lower die core component comprises a lower die core, a tooth sleeve, a pressing plate, a first bearing, a second bearing and at least one limiting rod, wherein a tooth socket through hole is formed in the tooth sleeve, oblique teeth are arranged on the circumferential surface of the tooth socket through hole, at least one chute is formed in the upper surface of the tooth sleeve, a first positioning column can slide along the chute, a second arc surface is arranged at the bottom of the chute, and the first arc surface is matched with the second arc surface. When the mold is opened, the pushing mechanism pushes out the injection molded part to push the gear sleeve to rotate, so that demolding is realized, and when the mold is closed, the first positioning column applies pressure to the chute to enable the gear sleeve to rotate and reset, so that the helical gear injection molded parts of the mold injected at each time are consistent, the mold precision is high, the tooth profiles of the injection molded products are the same, and the meshing error is small.
Description
Technical Field
The utility model belongs to the technical field of injection mold and specifically relates to a high accuracy helical gear injection mold is related to.
Background
An injection mold is a tool for producing plastic products and also a tool for giving the plastic products complete structure and precise dimensions. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.
Because the mutual slope inlay card of product and mould during the helical gear of moulding plastics, can be relatively more difficult when carrying out the drawing of patterns, it is difficult to the efficient operation of drawing of patterns, the helical gear tooth is the slope, can not straight ejecting when ejecting, need to do rotatory ejection mechanism, it is ejecting simultaneously to rotate, the product in the die cavity is ejecting to the mode that adopts the thimble at present more, can cause destruction, the colliding with of helical gear in holistic drawing of patterns in-process inevitable, cause the defective time of finished product easily, holistic machining precision and efficiency have been reduced, and caused the cost waste, still need the space of improving.
In addition, the mold of the bevel gear is also provided with the insert which is made to be rotatable through the bearing during ejection, the insert is driven to rotate through the product during ejection, but the product can rub against the mold core relatively to abrade the surface of the product, and the precision of the product is relatively reduced.
In addition, when the gear sleeve forming the helical gear tooth form rotates and is subjected to mold stripping and mold stripping, the rotating angle and the helical gear tooth number are not in integral multiple relation or a complex bone position exists in the helical gear, namely, the gear sleeve does not rotate to form a complete tooth form but rotates to form a non-integral multiple tooth form every time when rotating by an angle relative to the tooth form, so that each injection molded product is different in position relative to the tooth form due to the rotating action of the gear sleeve in the continuous injection molding process, and the injection molded product of each mold is different in product. And for the helical gear product with high precision, the helical gear product which is injected can be ensured to meet the product precision requirement only when the gear sleeve rotates to a specific position.
Disclosure of Invention
The utility model aims at providing an it is the same, the little high accuracy helical gear injection mold of meshing error to ensure the product profile of tooth.
In order to achieve the above object, the utility model provides a high accuracy helical gear injection mold, include: the injection molding device comprises an upper template, a lower template, an upper die core assembly, a lower die core assembly and a material pushing mechanism, wherein the lower template is arranged on the lower template;
go up mould benevolence subassembly including setting up the upper core on the cope match-plate pattern, the cover establish at the upper core of upper core periphery side and set up at least one first locating column at upper core upper surface, first locating column top surface is provided with first cambered surface. The lower die core component comprises a lower die core arranged on the lower die plate, a lower die core sleeved on the peripheral side face of the lower die core, a gear sleeve, a pressing plate, a first bearing, a second bearing and at least one limiting rod, the gear sleeve can rotate around the central axis of the lower die core, a tooth socket through hole is formed in the gear sleeve, and oblique teeth are arranged on the circumferential face of the tooth socket through hole. The side face of the periphery of the lower mold core is provided with a step, the second bearing is arranged on the step, the gear sleeve is provided with a hanging table, the lower surface of the hanging table is matched with the top face of the lower mold core, the lower end face of the gear sleeve is matched with the upper end face of the second bearing, the first bearing sleeve is sleeved on the peripheral wall of the gear sleeve, and the pressing plate is arranged on the upper end face of the first bearing and fixed on the top face of the upper template. The lower template is provided with a mold core groove, and the outer side surface of the first bearing and the outer side surface of the lower mold core are matched with the inner peripheral surface of the mold core groove.
The lower mold core is provided with at least one first through hole, the second bearing is provided with at least one second through hole, the lower surface of the gear sleeve is provided with at least one U-shaped groove, and one end of a limiting rod penetrates through the second through hole and the second through hole to the inside of the U-shaped groove; the upper surface of the gear sleeve is provided with at least one chute, one first positioning column can slide along one chute, the bottom of the chute is provided with a second cambered surface, and the first cambered surface is matched with the second cambered surface; the upper mold core, the lower mold core, the gear sleeve and the pushing mechanism can form a product forming cavity.
According to the scheme, the helical gear injection mold comprises an upper mold plate, a lower mold base, a lower mold plate, an upper mold core assembly, a lower mold core assembly and a material pushing mechanism, wherein the upper mold core assembly comprises an upper mold core, an upper mold core and at least one first positioning column, the top surface of the first positioning column is provided with a first cambered surface, the lower mold core assembly comprises a lower mold core, a gear sleeve, a pressing plate, a first bearing, a second bearing and at least one limiting rod, the gear sleeve can rotate around the central axis of the lower mold core, the gear sleeve is provided with a tooth groove through hole, the peripheral surface of the tooth groove through hole is provided with helical teeth, the peripheral side surface of the lower mold core is provided with a step, the second bearing is arranged on the step, the gear sleeve is provided with a hanging table, the lower surface of the hanging table is matched with the top surface of the lower mold core, the lower end surface of the gear sleeve is matched with the upper end surface of the second bearing, the first bearing is sleeved on the peripheral wall of the gear sleeve, the pressing plate is arranged on the upper end surface of the first bearing and fixed on the top surface of the upper mold plate, the lower template is provided with a mold core groove, the outer side surface of the first bearing and the outer side surface of the lower mold core are matched with the inner peripheral surface of the mold core groove, and the upper mold core, the lower mold core, the tooth sleeve and the pushing mechanism can form a product forming cavity. At least one chute has been seted up to the upper surface of tooth cover, and a chute slides can be followed to a first locating column, and the chute bottom is provided with the second cambered surface, first cambered surface and second cambered surface adaptation. The upper mold core, the lower mold core, the gear sleeve and the pushing mechanism can form a product forming cavity. After the injection molding of the bevel gear is finished, the mold is opened, the pushing mechanism applies thrust to the injection molding, the injection molding applies thrust to the gear sleeve through the bevel gear, so that the gear sleeve rotates on the first bearing and the second bearing, and the injection molding is pushed out of a product to form a cavity. After the injection molding piece is pushed out, the gear sleeve rotates by a certain angle, when the mold is closed, the first positioning column is in contact with the chute, and when the mold slides along the chute, pressure is applied to the chute, so that the gear sleeve rotates, and after the first cambered surface and the second cambered surface are matched, the gear sleeve resets, so that the helical gear injection molding piece products injected by the mold at each time are consistent, the mold precision is high, the tooth profile of the injection molding product is the same, and the meshing error is small. Meanwhile, at least one first through hole is formed in the lower mold core, at least one second through hole is formed in the second bearing, at least one U-shaped groove is formed in the lower surface of the gear sleeve, and one end of one limiting rod penetrates through the second through hole and the second through hole to the inside of the U-shaped groove. Through set up the gag lever post in U type groove for the rotation of lower mold core receives certain spacingly, is unlikely to rotate after the lower mold core assembly well and surpasss the limit, thereby makes first reference column be unlikely to produce the collision with the tooth cover, and guarantees that the tooth cover can not by the maloperation, makes the product inconsistent of moulding plastics around, further guarantees the uniformity of injection molding product and the stability that the mould used.
The further scheme is that a first inclined plane is arranged on the side surface of the step, a second inclined plane is arranged on the side surface of the hanging table, the first inclined plane and the second inclined plane are matched, and a plurality of oil grooves are formed in the first inclined plane.
It is obvious by above scheme, adopt first inclined plane and second inclined plane to the clearance between the lower surface of platform and the top surface of lower mold core is hung in adjustment that can be convenient reduces the friction of tooth cover and lower mould top surface, and simultaneously through setting up the oil groove, makes the rotational friction resistance of tooth cover littleer, thereby reduces the frictional force of injection molding and tooth cover skewed tooth, further promotes product precision and quality.
The further scheme is that a first fan-shaped groove, a second fan-shaped groove communicated with the first fan-shaped groove, a third fan-shaped groove communicated with the second fan-shaped groove and a fourth fan-shaped groove communicated with the third fan-shaped groove are formed in the peripheral surface of the upper die core, the first fan-shaped groove and the fourth fan-shaped groove are respectively communicated with an external water path, and the first fan-shaped groove, the second fan-shaped groove, the third fan-shaped groove and the fourth fan-shaped groove are located on the same plane in the die opening direction.
The further scheme is that two first sealing ring grooves are formed in the outer peripheral surface of the upper die core, and the two first sealing ring grooves are located on two sides of the first fan-shaped groove respectively.
The outer peripheral surface of the lower die core is provided with a fifth fan-shaped groove, a sixth fan-shaped groove communicated with the fifth fan-shaped groove, a seventh fan-shaped groove communicated with the sixth fan-shaped groove and an eighth fan-shaped groove communicated with the seventh fan-shaped groove, the fifth fan-shaped groove and the eighth fan-shaped groove are respectively communicated with an external water channel, and the fifth fan-shaped groove, the sixth fan-shaped groove, the seventh fan-shaped groove and the eighth fan-shaped groove are positioned on the same plane in the die opening direction.
The further scheme is that two second sealing ring grooves are formed in the peripheral surface of the lower die core, and the two second sealing ring grooves are located on two sides of the fifth fan-shaped groove respectively.
According to the scheme, the fan-shaped grooves are arranged as the mold cooling water paths, so that the cooling area and the cooling capacity are increased, the product is sufficiently cooled after the mold is injected, the product deformation is small, and the product precision and quality are further improved.
The further scheme is that the number of the first positioning columns and the number of the inclined grooves are four, the four first positioning columns and the four inclined grooves are uniformly distributed on a circumference which takes the circle center of the tooth socket through hole as the circle center, and each first positioning column can slide along each inclined groove.
According to the scheme, the number of the first positioning columns and the number of the inclined grooves are four, and the first positioning columns are evenly distributed on the circumference with the circle center of the tooth socket through hole as the circle center, so that the resetting force of the first positioning columns to the tooth sleeve is more even, and the use stability of the die is guaranteed.
In a further aspect, the second bearing is a flat thrust bearing.
The further scheme is that four positioning sleeves are arranged on the upper template, four second positioning columns are arranged on the lower template, and one second positioning column is matched with one positioning sleeve.
By above scheme, through setting up four position sleeves and four second reference columns to the mould is fixed a position in advance through second reference column and position sleeve before the compound die, guarantees the compound die precision of mould, has further promoted injection molding product precision.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a high-precision helical gear injection mold of the present invention.
Fig. 2 is the utility model discloses an upper die part structural schematic diagram of high accuracy helical gear injection mold embodiment.
Fig. 3 is a schematic structural view of an upper mold core and a part of the upper mold core of the high-precision helical gear injection mold of the present invention.
Figure 4 is the utility model discloses a mould core sector groove structure cross-sectional view on high accuracy helical gear injection mold embodiment.
Fig. 5 is the utility model discloses a high accuracy helical gear injection mold embodiment lower mould part schematic structure.
Fig. 6 is a schematic view of the lower mold core and the lower mold core part of the high-precision helical gear injection mold of the present invention.
Figure 7 is the utility model discloses a lower die core fan-shaped groove structure cross-sectional view of high accuracy helical gear injection mold embodiment.
Figure 8 is the utility model discloses a lower mould benevolence subassembly structure cross-sectional view of high accuracy helical gear injection mold embodiment.
Fig. 9 is an explosion diagram of the lower mold core assembly of the high-precision helical gear injection mold of the present invention.
Fig. 10 is a schematic diagram of a gear sleeve structure according to an embodiment of the high-precision helical gear injection mold of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Referring to fig. 1 to 10, in an embodiment, the high-precision helical gear injection mold is mainly used for mold injection of a high-precision helical gear, and includes an upper mold plate 1, a lower mold base 2, a lower mold plate 3 disposed on the lower mold base 2, an upper mold core assembly 5 disposed on the upper mold plate 1, a lower mold core assembly 6 disposed on the lower mold plate 3, and a material pushing mechanism 4 disposed on the lower mold base 2, where the material pushing mechanism 4 is provided with a plurality of ejector pins, and the ejector pins in the material pushing mechanism 4 can push an injection molding piece out of a product molding cavity.
The upper mold core assembly 5 comprises an upper mold core 51 arranged on the upper mold plate 1, an upper mold core 52 sleeved on the peripheral side surface of the upper mold core 51 and four first positioning columns 53 arranged on the upper surface of the upper mold core 52, wherein the top surface of each first positioning column 53 is provided with a first cambered surface 54.
The lower mold core assembly 6 comprises a lower mold core 61 arranged on the lower mold plate 3, a lower mold core 62 sleeved on the peripheral side surface of the lower mold core 61, a gear sleeve 63, a pressure plate 64, a first bearing 65, a second bearing 66 and four limiting rods 67, wherein the gear sleeve 63 can rotate around the central axis of the lower mold core 62, a tooth socket through hole 631 is formed in the gear sleeve 63, and inclined teeth 632 are arranged on the peripheral surface of the tooth socket through hole 631; the peripheral side surface of the lower mold core 62 is provided with a step 621, the second bearing 66 is arranged on the step 621, the gear sleeve 63 is provided with a hanging table 633, the lower surface of the hanging table 633 is matched with the top surface of the lower mold core 62, the lower end surface of the gear sleeve 63 is matched with the upper end surface of the second bearing 66, the second bearing 66 is a plane thrust bearing, the first bearing 65 is sleeved on the peripheral wall of the gear sleeve 63, and the pressing plate 64 is arranged on the upper end surface of the first bearing 65 and fixed on the top surface of the upper mold plate 1; the lower template 3 is provided with a mold core groove, and the outer side surface of the first bearing 65 and the outer side surface of the lower mold core 62 are matched with the inner peripheral surface of the mold core groove; the lower mold core 62 is provided with four first through holes 623, the second bearing 66 is provided with four second through holes 661, the lower surface of the gear sleeve 63 is provided with four U-shaped grooves 634, the two ends of each U-shaped groove 634 are smaller than the two ends of each inclined groove 635 at the two ends of each gear sleeve 63, and the two ends of each limiting rod 67 simultaneously penetrate through one second through hole 661 and one second through hole 661 to one U-shaped groove 634. The side of the step 621 is provided with a first inclined surface 624, the side of the hanging table 633 is provided with a second inclined surface 637, the first inclined surface 624 is adapted to the second inclined surface 637, the first inclined surface 624 is provided with a plurality of oil grooves 625, and an included angle between the first inclined surface 624 and the top surface of the lower die core 62 is 110 degrees. By adopting the first inclined surface 624 and the second inclined surface 637, the gap between the lower surface of the hanging table 633 and the top surface of the lower mold core 62 can be conveniently adjusted in the mold debugging stage, the friction between the gear sleeve 63 and the top surface of the lower mold is reduced, and meanwhile, the rotating friction resistance of the gear sleeve 63 is smaller by arranging the oil groove 625, so that the friction between an injection molding part and the helical teeth 632 of the gear sleeve 63 is reduced, and the precision and the quality of a product are improved.
The upper surface of the gear sleeve 63 is provided with four inclined grooves 635, the four first positioning columns 53 and the four inclined grooves 635 are uniformly distributed on a circumference which takes the circle center of the tooth socket through hole 631 as the circle center, each first positioning column 53 can slide along each inclined groove 635, the bottom of each inclined groove 635 is provided with a second cambered surface 636, and the first cambered surface 54 is matched with the second cambered surface 636; the upper mold core 51, the upper mold core 52, the lower mold core 61, the lower mold core 62, the gear sleeve 63 and the pushing mechanism 4 can form a product forming cavity.
The outer peripheral surface of the upper mold core 52 is provided with a first fan-shaped groove 71, a second fan-shaped groove 72 communicated with the first fan-shaped groove 71, a third fan-shaped groove 73 communicated with the second fan-shaped groove 72 and a fourth fan-shaped groove 74 communicated with the third fan-shaped groove 73, the first fan-shaped groove 71 and the fourth fan-shaped groove 74 are respectively communicated with an external water channel, and the first fan-shaped groove 71, the second fan-shaped groove 72, the third fan-shaped groove 73 and the fourth fan-shaped groove 74 are positioned on the same plane in the mold opening direction. Two first seal ring grooves 75 are formed in the outer peripheral surface of the upper mold core 52, and the two first seal ring grooves 75 are located on two sides of the first fan-shaped groove 71 respectively. The outer peripheral surface of the lower mold core 62 is provided with a fifth fan-shaped groove 81, a sixth fan-shaped groove 82 communicated with the fifth fan-shaped groove 81, a seventh fan-shaped groove 83 communicated with the sixth fan-shaped groove 82, and an eighth fan-shaped groove 84 communicated with the seventh fan-shaped groove 83, the fifth fan-shaped groove 81 and the eighth fan-shaped groove 84 are respectively communicated with an external water channel, and the fifth fan-shaped groove 81, the sixth fan-shaped groove 82, the seventh fan-shaped groove 83, and the eighth fan-shaped groove 84 are positioned on the same plane in the mold opening direction. Two second seal ring grooves 85 are formed in the outer peripheral surface of the lower mold core 62, and the two second seal ring grooves 85 are located on two sides of the fifth fan-shaped groove 81 respectively. The fan-shaped grooves are arranged as the mold cooling water paths, so that the cooling area and the cooling capacity are increased, the product is sufficiently cooled after the mold is injected, the product deformation is small, and the product precision and quality are ensured. Four positioning sleeves 11 are arranged on the upper template 1, four second positioning columns 21 are arranged on the lower template 3, and one second positioning column 21 is matched with one positioning sleeve 11, so that the mold is positioned in advance through the second positioning columns 21 and the positioning sleeves 11 before mold closing, the mold closing precision of the mold is ensured, and the precision of injection molding products is further improved.
The utility model discloses a set up cope match-plate pattern 1, the die holder 2, the lower bolster 3, go up mould benevolence subassembly 5, lower mould benevolence subassembly 6 and pushing equipment 4, it includes core 51, go up mould core 52 and four first locating posts 53 to go up mould benevolence subassembly 5, each first locating post 53 top surface all is provided with first cambered surface 54, lower mould benevolence subassembly 6 includes core 61 down, lower mould core 62, tooth cover 63, clamp plate 64, first bearing 65, second bearing 66 and four gag lever post 67, tooth cover 63 can rotate around the central axis of core 62 down, tooth cover 63 has seted up tooth's socket through-hole 631, tooth's socket through-hole 631 global is provided with skewed tooth 632, lower mould core 62 periphery side is provided with a step 621, second bearing 66 sets up on step 621, tooth cover 63 is provided with a string platform 633, the lower surface of string platform 633 and the top surface adaptation of core 62 down, the lower terminal surface of tooth cover 63 and the up end adaptation of second bearing 66, the first bearing 65 is sleeved on the peripheral wall of the tooth sleeve 63, the pressing plate 64 is arranged on the upper end face of the first bearing 65 and fixed on the top face of the upper template 1, the lower template 3 is provided with a mold core groove, the outer side face of the first bearing 65 and the outer side face of the lower mold core 62 are matched with the inner peripheral face of the mold core groove, and the upper mold core 51, the upper mold core 52, the lower mold core 61, the lower mold core 62, the tooth sleeve 63 and the pushing mechanism 4 can form a product forming cavity. Four inclined grooves 635 are formed in the upper surface of the gear sleeve 63, one first positioning column 53 can slide along one inclined groove 635, the bottom of each inclined groove 635 is provided with a second cambered surface 636, and the first cambered surface 54 is matched with the second cambered surface 636. The upper mold core 51, the upper mold core 52, the lower mold core 61, the lower mold core 62, the gear sleeve 63 and the pushing mechanism 4 can form a product forming cavity. After the injection molding of the bevel gear is finished, the mold is opened, the push pin penetrating through the push pin hole 611 in the lower mold core 61 in the pushing mechanism 4 applies thrust to the injection molding, the injection molding applies thrust to the gear sleeve 63 through the helical teeth 632, so that the gear sleeve 63 rotates on the first bearing 65 and the second bearing 66, and the injection molding is pushed out of a product to form a cavity. Meanwhile, the lower mold core 62 is provided with four first through holes 623, the second bearing 66 is provided with four second through holes 661, the lower surface of the gear sleeve 63 is provided with four U-shaped grooves 634, and one end of one limiting rod 67 simultaneously penetrates through one second through hole 661 and one second through hole 661 to one U-shaped groove 634. After the injection molding piece is pushed out, tooth cover 63 rotates a certain angle, when the mould closes the mould, first locating column 53 contacts chute 635, when sliding along chute 635, exert pressure to chute 635, thereby make tooth cover 63 rotate, after first cambered surface 54 and second cambered surface 636 adaptation, tooth cover 63 resets, thereby it is unanimous to realize the helical gear injection molding piece product that the mould was moulded plastics at every turn, the mould precision is high, the injection moulding product profile of tooth is the same, the meshing error is little, simultaneously, the quantity of first locating column 53 and chute 635 sets up to four, and evenly distributed is on the circumference of the centre of a circle at the centre of a tooth's socket through-hole 631 centre of a circle, make first locating column 53 more even to the restoring force of tooth cover 63, guarantee the stability of mould use. Through set up gag lever post 67 in U type groove 634 for lower mold core 62's rotation receives certain spacing, is unlikely to rotate after lower mold core 62 assembles to surpass the limit, thereby makes first reference column 53 be unlikely to produce the collision with tooth cover 63, and guarantees that tooth cover 63 can not by the maloperation, makes the product inconsistent of moulding plastics around, thereby further guarantees the uniformity of injection molding product and the stability that the mould used. Through setting up four position sleeves 11 and four second reference columns 21 to the mould is fixed a position in advance through second reference column 21 and position sleeve 11 before the compound die, guarantees the compound die precision of mould, has further promoted injection molding product precision.
Above embodiment is the preferred example of the utility model, and not the restriction the utility model discloses the range of implementing, the event all according to the utility model discloses the equivalent change or the decoration that structure, characteristic and principle were done of application for patent scope all should be included in the utility model discloses the patent application scope.
Claims (9)
1. The utility model provides a high accuracy helical gear injection mold which characterized in that: the injection molding device comprises an upper template, a lower die holder, a lower template arranged on the lower die holder, an upper mold core assembly arranged on the upper template, a lower mold core assembly arranged on the lower template and a material pushing mechanism arranged on the lower die holder, wherein the material pushing mechanism can push an injection molding piece out of a product molding cavity;
the upper mold core assembly comprises an upper mold core arranged on the upper mold plate, an upper mold core sleeved on the peripheral side surface of the upper mold core and at least one first positioning column arranged on the upper surface of the upper mold core, and a first cambered surface is arranged on the top surface of the first positioning column;
the lower mold core assembly comprises a lower mold core arranged on the lower template, a lower mold core sleeved on the peripheral side surface of the lower mold core, a gear sleeve, a pressing plate, a first bearing, a second bearing and at least one limiting rod, the gear sleeve can rotate around the central axis of the lower mold core, the gear sleeve is provided with a tooth socket through hole, and the peripheral surface of the tooth socket through hole is provided with helical teeth;
the side surface of the periphery of the lower mold core is provided with a step, the second bearing is arranged on the step, the gear sleeve is provided with a hanging table, the lower surface of the hanging table is matched with the top surface of the lower mold core, the lower end surface of the gear sleeve is matched with the upper end surface of the second bearing, the first bearing is sleeved on the peripheral wall of the gear sleeve, and the pressing plate is arranged on the upper end surface of the first bearing and fixed on the top surface of the upper template;
the lower template is provided with a die core groove, and the outer side surface of the first bearing and the outer side surface of the lower die core are matched with the inner peripheral surface of the die core groove;
the lower mold core is provided with at least one first through hole, the second bearing is provided with at least one second through hole, the lower surface of the gear sleeve is provided with at least one U-shaped groove, and one end of one limiting rod penetrates through one second through hole and one second through hole to one U-shaped groove;
the upper surface of the gear sleeve is provided with at least one inclined groove, one first positioning column can slide along one inclined groove, the bottom of the inclined groove is provided with a second cambered surface, and the first cambered surface is matched with the second cambered surface;
the upper mold core, the lower mold core, the gear sleeve and the pushing mechanism can form a product forming cavity.
2. The injection mold for the bevel gear with high precision as set forth in claim 1, wherein:
the side of step has seted up first inclined plane, the second inclined plane has been seted up to the string platform side, first inclined plane with the adaptation of second inclined plane, a plurality of oil groove has been seted up on the first inclined plane.
3. The injection mold for the bevel gear with high precision as set forth in claim 1, wherein:
the outer peripheral surface of the upper mold core is provided with a first fan-shaped groove, a second fan-shaped groove communicated with the first fan-shaped groove, a third fan-shaped groove communicated with the second fan-shaped groove and a fourth fan-shaped groove communicated with the third fan-shaped groove, the first fan-shaped groove and the fourth fan-shaped groove are respectively communicated with an external water path, and the first fan-shaped groove, the second fan-shaped groove, the third fan-shaped groove and the fourth fan-shaped groove are positioned on the same plane in the mold opening direction.
4. The injection mold for the bevel gear with high precision as set forth in claim 3, wherein:
two first sealing ring grooves are formed in the peripheral surface of the upper mold core, and the two first sealing ring grooves are located on two sides of the first fan-shaped groove respectively.
5. The injection mold for the bevel gear with high precision as set forth in claim 1, wherein:
the outer peripheral surface of the lower mold core is provided with a fifth fan-shaped groove, a sixth fan-shaped groove communicated with the fifth fan-shaped groove, a seventh fan-shaped groove communicated with the sixth fan-shaped groove and an eighth fan-shaped groove communicated with the seventh fan-shaped groove, the fifth fan-shaped groove and the eighth fan-shaped groove are respectively communicated with an external water channel, and the fifth fan-shaped groove, the sixth fan-shaped groove, the seventh fan-shaped groove and the eighth fan-shaped groove are positioned on the same plane in the mold opening direction.
6. The injection mold for the bevel gear with high precision as set forth in claim 5, wherein:
two second sealing ring grooves are formed in the peripheral surface of the lower mold core, and the two second sealing ring grooves are located on two sides of the fifth fan-shaped groove respectively.
7. The injection mold for the bevel gear with high precision as set forth in claim 1, wherein:
the number of the first positioning columns and the number of the inclined grooves are four, and the four first positioning columns and the four inclined grooves are uniformly distributed on a circumference which takes the circle center of the tooth socket through hole as the circle center.
8. The injection mold for the bevel gear with high precision as set forth in claim 1, wherein:
the second bearing is a planar thrust bearing.
9. The injection mold for the bevel gear with high precision as set forth in claim 1, wherein:
the upper template is provided with four positioning sleeves, the lower template is provided with four second positioning columns, and one second positioning column is matched with one positioning sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023204768.0U CN214395190U (en) | 2020-12-26 | 2020-12-26 | High-precision helical gear injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023204768.0U CN214395190U (en) | 2020-12-26 | 2020-12-26 | High-precision helical gear injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214395190U true CN214395190U (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023204768.0U Active CN214395190U (en) | 2020-12-26 | 2020-12-26 | High-precision helical gear injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214395190U (en) |
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2020
- 2020-12-26 CN CN202023204768.0U patent/CN214395190U/en active Active
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