CN219405194U - Helical gear ejection die - Google Patents

Abstract

The utility model discloses a helical gear ejection die, which relates to the technical field of dies and comprises a first die frame and a second die frame, wherein a core is arranged in the first die frame, and the top of the first die frame is provided with the second die frame matched with the first die frame. According to the utility model, when the fixed guide rod and the two groups of limit rods extend into the injection cavity, wherein the fixed guide rod forms a shaft hole of the bevel gear, the two groups of limit rods form a key groove of the bevel gear, after the injection of the bevel gear is finished, the push plate mechanism of the external injection molding machine drives the stripper plate to push upwards, at the moment, the lifting rotary cylinder moves upwards relative to the fixed guide rod, and the guide sliding block slides in the arc-shaped guide groove, so that the lifting rotary cylinder rotates simultaneously relative to the fixed guide rod in the lifting process, the lifting rotary cylinder can drive the injection-finished bevel gear to perform rotary demolding, the whole demolding process is more convenient, an external power mechanism is not needed, the whole energy consumption problem is effectively reduced, and the working efficiency is improved.

Description

Helical gear ejection die

Technical Field

The utility model relates to the technical field of dies, in particular to a helical gear ejection die.

Background

Engineering plastics are often used for manufacturing plastic gears, which have the characteristics of small noise, light dynamic load and the like, are applied to low-power mechanical transmission, high-power mechanical transmission and the like, and are characterized by even contact, small meshing impact, stable transmission and the like.

When plastic helical gear injection molding is used for demolding, the ejector mechanism is required to eject in the demolding direction, and simultaneously, the molded tooth-shaped cavity or the plastic gear itself performs rotary motion in the tooth-shaped oblique direction, so that the purpose of smooth demolding can be achieved, and the mold structure is generally called as a rotary ejection mechanism.

In the prior art, the helical gear is ejected by installing the rotary ejection mechanism in the helical gear ejection die, but most of the conventional rotary ejection mechanisms form the rotary ejection mechanism through the common combination of a motor and an air cylinder, so that the manufacturing and maintenance cost is high, and a certain energy source is consumed.

Disclosure of Invention

Based on the above, the utility model aims to provide a helical gear ejection die, which solves the technical problems that most of rotary ejection mechanisms in the prior art are formed by combining a motor and an air cylinder together, so that the manufacturing and maintenance cost is high, and a certain energy source is consumed.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an ejecting mould of helical gear, includes first die carrier and second die carrier, first die carrier inside is provided with the core, and wherein first die carrier top is provided with rather than matched with second die carrier, second die carrier inside is provided with rather than core matched with die cavity, and first die carrier and the inside central point department of die cavity have seted up the runner of moulding plastics, and the runner of moulding plastics is linked together with the cavity of moulding plastics, the cavity of moulding plastics has been seted up inside to the core, the inside central point department of first die carrier is provided with the fixed guide arm that extends to the cavity of moulding plastics, fixed guide arm outside swing joint has lift rotary drum, lift rotary drum inner wall is fixed to be provided with and extends to the inside guide slider of fixed guide arm, fixed guide arm surface has seted up with guide slider matched with arc guide way, lift rotary drum top both ends are fixed to be provided with the gag lever post that extends to the cavity of moulding plastics inside, and the quantity of gag lever post is two sets of helical gear, and the inside is formed with the keyway with gag lever post matched with of helical lever post of helical gear of the helical gear.

Through adopting above-mentioned technical scheme, stretch into the intracavity portion of moulding plastics when fixed guide arm and two sets of gag levers, wherein fixed guide arm forms the shaft hole of helical gear, two sets of gag levers forms the keyway of helical gear, after the helical gear is moulded plastics and is accomplished, wherein the push pedal mechanism of external injection molding machine drives the stripper plate and upwards promotes, at this moment, lift rotary cylinder upwards moves for fixed guide arm, because the direction slider slides in the inside of arc guide way, and then lift rotary cylinder rotates simultaneously for the in-process that fixed guide arm risen, and then lift rotary cylinder can drive the helical gear of moulding plastics and accomplish and rotate the drawing of patterns, whole drawing of patterns process is comparatively convenient, and need not add power unit, the effectual holistic problem of energy consumption that has reduced, and work efficiency has been promoted.

The utility model is further characterized in that a stripper plate is arranged below the first die frame, a top plate is fixedly arranged at the top of the stripper plate, the top plate is contacted with the bottom of the lifting rotary drum, and four corners between the first die frame and the stripper plate are connected through connecting columns.

Through adopting above-mentioned technical scheme, wherein the stripper plate can promote lift rotary drum under external demoulding mechanism's promotion to make helical gear rotation drawing of patterns.

In summary, the utility model has the following advantages: according to the utility model, when the fixed guide rod and the two groups of limit rods extend into the injection cavity, wherein the fixed guide rod forms a shaft hole of the bevel gear, the two groups of limit rods form a key groove of the bevel gear, after the injection of the bevel gear is completed, the push plate mechanism of the external injection molding machine drives the stripper plate to push upwards, at the moment, the lifting rotary cylinder moves upwards relative to the fixed guide rod, and the guide sliding block slides in the arc-shaped guide groove, so that the lifting rotary cylinder rotates simultaneously relative to the fixed guide rod in the lifting process, and the lifting rotary cylinder can drive the injection-completed bevel gear to perform rotary demolding, so that the whole demolding process is more convenient, an additional power mechanism is not needed, the whole energy consumption problem is effectively reduced, and the working efficiency is improved.

Drawings

FIG. 1 is an exploded view of the present utility model;

FIG. 2 is a partially exploded view of the first view of the present utility model;

FIG. 3 is a partially exploded view of a second view of the present utility model;

fig. 4 is a schematic overall structure of the present utility model.

In the figure: 1. a first mold frame; 2. a core; 3. a second mold frame; 4. a cavity; 5. an injection cavity; 6. bevel gear; 7. fixing a guide rod; 8. an arc-shaped guide groove; 9. lifting the rotary drum; 10. a guide slide block; 11. a limit rod; 12. a top plate; 13. removing the template; 14. and (5) connecting the columns.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Hereinafter, an embodiment of the present utility model will be described in accordance with its entire structure.

The utility model provides a helical gear ejecting mould, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, including first die carrier 1 and second die carrier 3, first die carrier 1 inside is provided with core 2, wherein first die carrier 1 top is provided with rather than matched with second die carrier 3, second die carrier 3 inside is provided with rather than core 2 matched with die cavity 4, first die carrier 1 and the inside central point department of die cavity 4 has seted up the runner of moulding plastics, and runner of moulding plastics and cavity 5 are linked together, the inside cavity 5 of moulding plastics of having seted up of core 2, first die carrier 1 inside central point department is provided with the fixed guide arm 7 that extends to cavity 5 inside, fixed guide arm 7 outside swing joint has lift rotary drum 9, lift rotary drum 9 inner wall fixed be provided with extend to fixed guide arm 7 inside direction slider 10, fixed guide arm 7 surface offer with direction slider 10 matched with arc guide slot 8, lift rotary drum 9 top both ends are fixed be provided with extend to the inside gag lever 11 of cavity 5, and the quantity of gag lever post 11 is two sets of two sets, the inside is formed with helical gear 6 of moulding plastics, and 6 inside is linked together with helical gear 11, the inside is equipped with the cavity 5, the fixed guide arm 7, the inside is provided with the fixed guide arm 7 that rotates relative to lift rotary drum 9 in order to carry out the lift rotary drum 9, and the whole rotation power consumption is relatively to the lift rotary drum 9, and the lift rotary drum 9 is relatively fixed in order to rotate the fixed in the lift rotary drum 9, and the whole rotation need to rotate the lift rotary drum is more than the fixed in the fixed rotation drum is in the fixed rotation to the fixed rotation drum.

Referring to fig. 1 and 4, a stripper plate 13 is disposed below a first mold frame 1, a top plate 12 is fixedly disposed on the top of the stripper plate 13, the top plate 12 contacts with the bottom of a lifting rotary drum 9, four corners between the first mold frame 1 and the stripper plate 13 are connected through connecting columns 14.

The working principle of the utility model is as follows: when in use, the utility model is integrally arranged in a die carrier which is matched with the outside, and then an outside injection molding machine is used for matching the injection molding cavity of the utility model with a demoulding mechanism of the outside injection molding carrier and a demoulding plate 13;

when the fixed guide rod 7 and the two groups of limiting rods 11 extend into the injection cavity 5, wherein the fixed guide rod 7 forms a shaft hole of the bevel gear 6, the two groups of limiting rods 11 form a key slot of the bevel gear 6, and when the injection of the bevel gear 6 is completed, a push plate mechanism of an external injection molding machine drives the stripper plate 13 to push upwards;

at the moment, the lifting rotary drum 9 moves upwards relative to the fixed guide rod 7, and the guide sliding block 10 slides in the arc-shaped guide groove 8, so that the lifting rotary drum 9 rotates simultaneously relative to the lifting process of the fixed guide rod 7, and the lifting rotary drum 9 can drive the injection-molded helical gear 6 to perform rotary demolding, so that the integral demolding process is more convenient, an external power mechanism is not needed, the integral energy consumption problem is effectively reduced, and the working efficiency is improved;

specifically, the inclination of the arc-shaped guide groove 8 is correspondingly set with the inclination of the bevel gear 6, so that the bevel gear 6 can be smoothly demolded.

Although embodiments of the utility model have been shown and described, the detailed description is to be construed as exemplary only and is not limiting of the utility model as the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples, and modifications, substitutions, variations, etc. may be made in the embodiments as desired by those skilled in the art without departing from the principles and spirit of the utility model, provided that such modifications are within the scope of the appended claims.

Claims (7)

1. The utility model provides a helical gear ejection mould, includes first die carrier (1) and second die carrier (3), its characterized in that: the novel plastic injection mold is characterized in that a core (2) is arranged inside the first mold frame (1), an injection molding cavity (5) is formed in the core (2), a fixed guide rod (7) extending to the inside of the injection molding cavity (5) is arranged at the center position inside the first mold frame (1), a lifting rotary drum (9) is movably connected to the outer side of the fixed guide rod (7), a guide sliding block (10) extending to the inside of the fixed guide rod (7) is fixedly arranged on the inner wall of the lifting rotary drum (9), and an arc-shaped guide groove (8) matched with the guide sliding block (10) is formed in the surface of the fixed guide rod (7).

2. The helical gear ejection die of claim 1, wherein: the top of the first die carrier (1) is provided with a second die carrier (3) matched with the first die carrier, and a die cavity (4) matched with the core (2) is arranged in the second die carrier (3).

3. The helical gear ejection die of claim 2, wherein: an injection molding runner is arranged at the central position inside the first die carrier (1) and the die cavity (4), and the injection molding runner is communicated with the injection molding cavity (5).

4. The helical gear ejection die of claim 1, wherein: limiting rods (11) extending into the injection molding cavity (5) are fixedly arranged at two ends of the top of the lifting rotary cylinder (9), and the number of the limiting rods (11) is two.

5. The helical gear ejection die of claim 4, wherein: the injection molding cavity (5) is internally provided with a bevel gear (6), and a key slot matched with the limiting rod (11) is formed in the bevel gear (6).

6. The helical gear ejection die of claim 1, wherein: a stripper plate (13) is arranged below the first die carrier (1), a top plate (12) is fixedly arranged at the top of the stripper plate (13), and the top plate (12) is contacted with the bottom of the lifting rotary drum (9).

7. The helical gear ejection die of claim 6, wherein: four corners between the first die frame (1) and the stripper plate (13) are connected through connecting columns (14).