CN216267151U - Plastic mold for gears - Google Patents

Abstract

The utility model discloses a plastic gear mold which comprises a base, a lower mold, an upper mold, a protective seat and a driving wheel, wherein the lower mold is arranged at the top end of the base, the upper mold is arranged at the top end of the lower mold, the protective seat is installed at the top end of the upper mold, a pouring gate is installed at the top end of the protective seat, the outer wall of the pouring gate is fixedly connected with the protective seat, a protective cover is installed at the top end of the protective seat above the pouring gate, the bottom end of the protective cover is fixedly connected with the protective seat, three groups of limiting sleeves are arranged inside the upper mold, three groups of limiting pins are arranged inside the protective seat above the limiting sleeves, and the bottom ends of the limiting pins extend to the inside of the limiting sleeves. The utility model not only realizes convenient protection of the feeding port of the plastic gear mold, facilitates the product to be taken out from the interior of the mold, but also ensures the precision of the plastic gear mold during mold closing.

Description

Plastic mold for gears

Technical Field

The utility model relates to the technical field of molds, in particular to a plastic mold for a gear.

Background

The plastic gear is widely applied to automobiles, instruments, household appliances, toys and various timing devices because of the characteristics of light weight, low price, low transmission noise and the like, the plastic gear not only replaces a metal gear in many occasions but also can be used in many fields where the metal gear is not suitable for use, the gear transmission is a transmission mode which is the widest application in mechanical transmission parts, the plastic gear is one of gear products and is more and more widely applied in various fields, the plastic gear is light in weight and low in transmission noise, along with the development of the plastic industry, the high temperature resistance and the high load bearing capacity of the gear are stronger and stronger, even the gear transmission is a transmission mode which is the widest application in the mechanical transmission parts in many occasions, the tooth form of a small-modulus plastic internal gear is formed by adopting a small-modulus metal external gear core, and the core cannot be processed by adopting a gear cutter due to the small tooth form, and because the height of the core exceeds one millimeter, the core cannot be processed by a method of electroforming metal after photoetching resin, a proper processing method is wire cut electrical discharge machining, and the plastic gear mold is widely applied to the field of plastic gear processing.

This type of mould on the market is various today, can satisfy people's user demand basically, but still has certain problem, and the convenient protection of pan feeding mouth is generally not convenient for when using to this type of mould that has now, great influence the processingquality of product when the mould uses.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a plastic gear mold, which solves the problem that the mold is inconvenient to conveniently protect a feeding hole in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a gear plastic mould, includes base, lower mould, goes up mould, protection seat and drive wheel, the top of base is equipped with the lower mould, the top of lower mould is equipped with the mould, the protection seat is installed on the top of going up the mould, the sprue gate is installed on the top of protection seat, and the outer wall and the protection seat fixed connection of sprue gate, the protection casing is installed on the protection seat top of the top of sprue gate, and the bottom and the protection seat fixed connection of protection casing, the inside of going up the mould is equipped with three stop collars of group, the inside spacer pin of three groups that is equipped with of stop collar top, and the bottom of spacer pin all extends to the inside of stop collar.

Preferably, four groups of support sleeves are arranged inside the upper die, four groups of support columns are arranged inside the lower die below the support sleeves, and the top ends of the support columns extend to the inside of the support sleeves.

Preferably, four groups of driving rods are arranged inside the base, and threaded rods are fixed at the top ends of the driving rods.

Preferably, the surface of the driving rod is sleeved with a limiting frame, the surface of the threaded rod above the limiting frame is sleeved with a driving block, the outer wall of the driving block is connected with the lower die in a vertical sliding mode, and internal threads are arranged inside the driving block.

Preferably, driven gears are installed at the bottom ends of the driving rods, and the top ends of the driven gears are fixedly connected with the driving rods.

Preferably, the base internally mounted of driven gear one side has the driving gear, and driving gear and driven gear intermeshing, the drive wheel is installed to the bottom of driving gear.

Compared with the prior art, the utility model has the beneficial effects that: the mold not only realizes convenient protection of a feeding port of the plastic gear mold, facilitates taking out of a product from the interior of the mold, but also ensures the precision of the plastic gear mold during mold closing;

(1) the pouring gate is arranged in the protection seat, the protection cover is arranged on the surface of the protection seat and fixed with the protection seat through the bolt, and the protection cover protects the pouring gate, so that the convenient protection of the feeding gate of the plastic gear mold is realized, and dust impurities are prevented from entering the inner part of the feeding gate;

(2) when the protective seat and the upper die are installed, the limiting pin enters the limiting sleeve, the limiting pin and the limiting sleeve are matched to limit the upper die and the protective seat, the four groups of supporting columns enter the supporting sleeve, and the supporting columns and the supporting sleeve are matched to limit the lower die and the upper die, so that reliable limiting connection of the internal structure of the plastic gear die is realized, and the precision of the plastic gear die in die assembly is ensured;

(3) rotate through the drive wheel, drive wheel drive driving gear is rotatory, and driving gear drive driven gear rotates, and actuating lever drive threaded rod is rotatory, and threaded rod drive block up moves, and upward movement is gone up in the drive block drive to come to go up mould and lower mould and carry out the drawing of patterns, has realized that the convenient drawing of patterns of gear plastic mould separates, has made things convenient for the product to take out from mould inside.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic view of a front cross-sectional structure of the support sleeve of the present invention;

FIG. 3 is a schematic diagram of the front cross-sectional structure of the driving block of the present invention;

FIG. 4 is a schematic top sectional view of a driven gear of the present invention;

fig. 5 is a schematic top view of the protective cover of the present invention.

In the figure: 1. a base; 2. a lower die; 3. an upper die; 4. a protective seat; 5. a pouring gate; 6. a protective cover; 7. a spacing pin; 8. a limiting sleeve; 9. a support sleeve; 10. a drive block; 11. an internal thread; 12. a support pillar; 13. a threaded rod; 14. a limiting frame; 15. a drive rod; 16. a driven gear; 17. a driving gear; 18. and a driving wheel.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, an embodiment of the present invention is shown: a plastic gear mold comprises a base 1, a lower mold 2, an upper mold 3, a protective seat 4 and a driving wheel 18, wherein the lower mold 2 is arranged at the top end of the base 1, the upper mold 3 is arranged at the top end of the lower mold 2, the protective seat 4 is arranged at the top end of the upper mold 3, a sprue gate 5 is arranged at the top end of the protective seat 4, the outer wall of the sprue gate 5 is fixedly connected with the protective seat 4, the sprue gate 5 facilitates raw materials to enter the protective seat 4, a protective cover 6 is arranged at the top end of the protective seat 4 above the sprue gate 5, the bottom end of the protective cover 6 is fixedly connected with the protective seat 4, and the protective cover 6 shields and protects the sprue gate 5;

when the device is used, the base 1 and the lower die 2 are installed together, the upper die 3 and the protective seat 4 are installed together, the sprue gate 5 is installed inside the protective seat 4, the protective cover 6 is placed on the surface of the protective seat 4, the protective cover 6 is fixed with the protective seat 4 through a bolt, and the protective cover 6 protects the sprue gate 5 to prevent dust impurities from entering the protective seat 4, so that the convenient protection of a feeding port of a plastic gear die is realized, and the dust impurities are prevented from entering the inside of the feeding port;

three groups of limiting sleeves 8 are arranged inside the upper die 3, three groups of limiting pins 7 are arranged inside the protective seat 4 above the limiting sleeves 8, the bottom ends of the limiting pins 7 all extend into the limiting sleeves 8, the limiting pins 7 are connected with the limiting sleeves 8 in a sliding mode, the limiting pins 7 are matched with the limiting sleeves 8 to play a role in limiting and supporting, four groups of supporting sleeves 9 are arranged inside the upper die 3, four groups of supporting columns 12 are arranged inside the lower die 2 below the supporting sleeves 9, the top ends of the supporting columns 12 all extend into the supporting sleeves 9, the supporting columns 12 are connected with the supporting sleeves 9 in a sliding mode, and the supporting columns 12 are matched with the supporting sleeves 9 to play a role in limiting and supporting;

when the gear plastic mold is used, the four groups of limiting sleeves 8 and the upper mold 3 are installed together, the four groups of limiting pins 7 and the protective seat 4 are installed together, when the protective seat 4 and the upper mold 3 are installed, the limiting pins 7 enter the limiting sleeves 8, the limiting pins 7 and the limiting sleeves 8 are matched to limit the upper mold 3 and the protective seat 4, the four groups of supporting sleeves 9 and the upper mold 3 are installed together, the four groups of supporting columns 12 and the lower mold 2 are installed together, when the lower mold 2 and the upper mold 3 are assembled, the four groups of supporting columns 12 enter the supporting sleeves 9, and the supporting columns 12 and the supporting sleeves 9 are matched to limit the lower mold 2 and the upper mold 3, so that the assembly precision is ensured, the reliable limiting connection of the internal structure of the gear plastic mold is realized, and the precision of the gear plastic mold is ensured when the gear plastic mold is assembled;

four groups of driving rods 15 are arranged in the base 1, threaded rods 13 are fixed at the top ends of the driving rods 15, limiting frames 14 are sleeved on the surfaces of the driving rods 15, the limiting frames 14 play a role in limiting and supporting, driving blocks 10 are sleeved on the surfaces of the threaded rods 13 above the limiting frames 14, the outer walls of the driving blocks 10 are connected with the lower die 2 in a vertical sliding mode, internal threads 11 are arranged in the driving blocks 10, driven gears 16 are arranged at the bottom ends of the driving rods 15, the top ends of the driven gears 16 are fixedly connected with the driving rods 15, the driven gears 16 drive the driving rods 15 to rotate and drive, driving gears 17 are arranged in the base 1 on one sides of the driven gears 16 and are meshed with the driven gears 16, the driving gears 17 drive the driven gears 16 to rotate and drive, and driving wheels 18 are arranged at the bottom ends of the driving gears 17;

rotate through drive wheel 18 during the use, drive wheel 18 drive driving gear 17 is rotatory, under driving gear 17 and four driven gear 16's of group cooperation, driving gear 17 drive driven gear 16 rotates, driven gear 16 drives actuating lever 15 respectively and rotates, actuating lever 15 drives threaded rod 13 is rotatory, under spacing 14's spacing, under threaded rod 13 and internal thread 11's cooperation, threaded rod 13 drives driving block 10 and moves up, mould 3 up-moving on the driving block 10 drive, come to go up mould 3 and lower mould 2 and carry out the drawing of patterns, realized that the convenient drawing of patterns of gear plastic mould separates, made things convenient for the product to take out from mould inside.

When the embodiment of the application is used: firstly, a base 1 and a lower die 2 are installed together, an upper die 3 and a protective seat 4 are installed together, a sprue gate 5 is installed inside the protective seat 4, a protective cover 6 is placed on the surface of the protective seat 4, the protective cover 6 is fixed with the protective seat 4 through a bolt, the protective cover 6 is used for protecting the sprue gate 5 to prevent dust impurities from entering the protective seat 4, then four groups of limiting sleeves 8 are installed together with the upper die 3, four groups of limiting pins 7 are installed together with the protective seat 4, when the protective seat 4 is installed with the upper die 3, the limiting pins 7 enter the limiting sleeves 8, the limiting pins 7 and the limiting sleeves 8 are matched to limit the upper die 3 and the protective seat 4, four groups of supporting sleeves 9 are installed together with the upper die 3, four groups of supporting columns 12 are installed together with the lower die 2, when the lower die 2 and the upper die 3 are assembled, the four groups of supporting columns 12 enter the supporting sleeves 9, support column 12 and support cover 9 cooperation are spacing to lower mould 2 and last mould 3, guarantee the precision of compound die, rethread drive wheel 18 rotates, drive wheel 18 drive driving gear 17 is rotatory, under the cooperation of driving gear 17 and four sets of driven gear 16, driving gear 17 drive driven gear 16 rotates, driven gear 16 drives actuating lever 15 respectively and rotates, actuating lever 15 drives threaded rod 13 and rotates, under spacing of spacing 14, under the cooperation of threaded rod 13 and internal thread 11, threaded rod 13 drive driving block 10 moves up, driving block 10 drives last mould 3 and moves up, come to go up mould 3 and lower mould 2 and carry out the drawing of patterns, come to accomplish the use work of mould.

Claims (6)

1. A plastic gear mold is characterized in that: comprises a base (1), a lower die (2), an upper die (3), a protective seat (4) and a driving wheel (18), the top end of the base (1) is provided with a lower die (2), the top end of the lower die (2) is provided with an upper die (3), a protective seat (4) is arranged at the top end of the upper die (3), a pouring gate (5) is arranged at the top end of the protective seat (4), the outer wall of the pouring opening (5) is fixedly connected with the protective seat (4), the top end of the protective seat (4) above the pouring opening (5) is provided with a protective cover (6), the bottom end of the protective cover (6) is fixedly connected with the protective seat (4), three groups of limiting sleeves (8) are arranged inside the upper die (3), three groups of limiting pins (7) are arranged in the protective seat (4) above the limiting sleeve (8), and the bottom end of the limiting pin (7) extends to the inside of the limiting sleeve (8).

2. The plastic mold for gears of claim 1, wherein: the inner part of the upper die (3) is provided with four groups of supporting sleeves (9), the inner part of the lower die (2) below the supporting sleeves (9) is provided with four groups of supporting columns (12), and the top ends of the supporting columns (12) extend to the inner part of the supporting sleeves (9).

3. The plastic mold for gears of claim 1, wherein: the inside of base (1) is equipped with four groups of actuating levers (15), the top of actuating lever (15) all is fixed with threaded rod (13).

4. A gear plastic mould according to claim 3, characterised in that: the surface of the driving rod (15) is sleeved with a limiting frame (14), the surface of a threaded rod (13) above the limiting frame (14) is sleeved with a driving block (10), the outer wall of the driving block (10) is connected with the lower die (2) in a vertical sliding mode, and internal threads (11) are arranged inside the driving block (10).

5. A gear plastic mould according to claim 3, characterised in that: driven gear (16) are all installed to the bottom of actuating lever (15), and driven gear (16)'s top and actuating lever (15) fixed connection.

6. The plastic mold for gears of claim 5, wherein: base (1) internally mounted of driven gear (16) one side has driving gear (17), and driving gear (17) and driven gear (16) intermeshing, drive wheel (18) are installed to the bottom of driving gear (17).

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