CN221314939U - Double-shot injection mold for main body shell of shaver - Google Patents

Abstract

The application relates to the technical field of injection molds, and provides a double-color injection mold for a main body shell of a shaver, which comprises the following components: the first positioning mold plate and the first positioning mold core are positioned at the first station; the second fixed die plate and the second fixed die core are positioned at the second station; two groups of same movable mould systems, each group of movable mould systems comprises a movable mould plate, a movable mould core and a mould core, the two groups of movable mould systems are respectively positioned at a first station and a second station, and the positions of the two groups of movable mould systems can be changed through rotation; the first fixed die core, the movable die core and the core are positioned at the first station to form a first cavity, and the first cavity is injection-molded to form a main shell body; when the main shell body and the movable die system positioned at the first station rotate to the second station together, a second fixed die core, a movable die core, a core and the main shell body positioned at the second station are assembled to form a second cavity, and the second cavity is injection-molded to form a soft rubber piece. The main body shell with the structural supporting function is formed by one-step injection molding, so that the integral performance is good, and the damage is not easy to occur.

Description

Double-shot injection mold for main body shell of shaver

Technical Field

The application relates to the technical field of injection molds, in particular to a double-color injection mold for a main body shell of a shaver.

Background

The development of the mold technology and the material forming process lays the foundation of the development of the modern industry. The mold is used as important production equipment and process development direction, and plays an important role in mass production of modern industry. The product production by the die has the remarkable characteristics of high quality, high efficiency, energy conservation, low cost and the like, so that the die is widely applied to the product production in the fields of automobiles, machinery, electronics, light industry and the like. 60-80% of the parts in these fields are produced by die processing, the function of the die being irreplaceable.

The electric shaver body shell is provided with a cavity for accommodating components such as a battery and a motor, most of the existing main body shells for providing structural support are divided into two parts, the two parts are subjected to independent injection molding, and the two parts after molding are connected into a whole through a buckle, so that the electric shaver body shell is simple in mold structure and low in injection molding cost, but in actual use, the electric shaver is easy to crack and separate at the joint between the shells after falling and bumping, and the use experience is influenced.

Disclosure of utility model

In order to solve the problems, the application provides the double-shot injection mold for the main body shell of the shaver, which provides one-shot injection molding of the main body shell with the structural support function, has better integrity, is not easy to crack, deform and other damages after the electric shaver falls and collides, and provides good protection for components in the main body shell, thereby prolonging the service life of the electric shaver and improving the use experience of users. The technical scheme adopted by the application is as follows:

A razor body housing dual color injection mold comprising:

The first die core is arranged on the first die plate; the second fixed die plate and the second fixed die core are positioned at a second station, and the second fixed die core is arranged on the second fixed die plate; the two groups of the same movable mould systems are respectively positioned at a first station and a second station, and the positions of the two groups of movable mould systems can be changed by rotating; the first fixed die core, the movable die core and the core which are positioned at the first station are clamped to form a first cavity, and the first cavity is injection-molded to form a main shell body; when the main body shell body and the movable die system positioned at the first station jointly rotate to the second station, the second fixed die core, the movable die core, the core and the main body shell body positioned at the second station are clamped to form a second cavity, the second cavity is injection molded to form a soft rubber piece, and the main body shell body and the soft rubber piece are combined to form a main body shell of the shaver.

The main body shell body with the structural support function is formed by one-step injection molding, the integrity is good, after the electric shaver falls and collides with the main body shell body, the electric shaver is not easy to crack, deform and other damages, and good protection is provided for components in the main body shell body, so that the service life of the electric shaver is prolonged, and the use experience of a user is improved; the light-transmitting area of the indicating lamp and the button seat on the main body shell of the shaver are arranged to be soft rubber parts, the soft rubber parts and the main body shell body are integrally molded by adopting a secondary injection molding process (a double-color injection molding process), the process of independently installing the soft rubber parts is saved, and the production efficiency is high.

In some embodiments, the core includes a core mold and inserts located at both sides of the core mold, a preset gap is formed between the inserts and the core mold, a first reinforcing rib can be formed in the main shell body through injection molding, a preset gap is also formed between the inserts and the outer wall of the first cavity, and a shell at a corresponding position in the main shell body can be formed through injection molding.

Through setting up the mold insert, can avoid the local wall thickness of main part shell body too thick, make the wall thickness change of main part shell body that sets up mold insert department even, main part shell body cooling is even, reduces main part shell body surface and produces the risk of sunken or wall thickness center production vacuum bubble, also can avoid setting up the wall thickness shrink too much of main part shell body of mold insert department simultaneously, leads to the size deviation too big, influences the equipment effect.

In some embodiments, the insert includes a first insert body provided with a recess and a penetration hole passing through a bottom surface of the recess, and a penetration post adapted to penetrate through the penetration hole and beyond the bottom surface of the recess to form a screw post in the main housing body after injection molding.

The insert is not processed by a whole piece of material, and the insert comprises a first insert body and a collision column, namely the insert is assembled by multiple parts, so that the manufacturing difficulty of the insert can be reduced.

In some embodiments, the top end of the collision column is tightly attached to the local surface of the movable mold core.

The top end of the touch column is tightly attached to the local surface of the movable mold core, that is to say, the touch column is attached to the parting surface of the movable mold core, when the touch column is pulled out of the screw column after the screw column (BOSS column) is formed, the attaching part of the touch column and the parting surface (touch surface) of the movable mold core can play a role in ventilation, and the pulling-out of the touch column is facilitated.

In some embodiments, the bump column includes a large diameter section and a small diameter section, the large diameter section is located in the perforation, the small diameter section is exposed out of the perforation, and a connection between the large diameter section and the small diameter section is located at a bottom surface of the concave table.

In order to obtain the screw column, the cross section size of the corresponding part of the collision column and the screw column is matched with the screw hole size of the screw column, the screw column on the main body shell of the shaver is smaller in size in terms of overall length, if the overall length of the collision column is processed according to the same cross section size, the processing difficulty of the collision column and the processing difficulty of perforation are certainly increased, the collision column is designed into a large-diameter section and a small-diameter section, the cross section size of the small-diameter section is matched with the screw hole size of the screw column, the processing difficulty of the large-diameter section is lower than that of the small-diameter section, the processing difficulty of the large-diameter perforation is lower than that of the small-diameter perforation, and the overall processing difficulty of the collision column and the processing difficulty of perforation are also reduced while the screw hole size of the screw column is met.

In some embodiments, the side wall of the recess is provided with a bar-shaped opening, and a second reinforcing rib for reinforcing the screw column may be formed in the main housing body by injection molding.

Through set up the bar opening at the lateral wall of concave station, can reduce on the one hand and appear the risk of unfilled stock or producing the welding line in screw post department, and unfilled stock and welding line can influence the structural strength of screw post, on the other hand can form bone position (second strengthening rib) in bar opening part, provide the support to the screw post, strengthen the structural strength of screw post.

In some embodiments, the cross-sectional dimension of the insert tapers in a direction toward the movable mold insert.

The cross section dimension of the insert gradually reduces along the direction close to the movable die core, namely the insert has an inclined angle in the die stripping direction, a die drawing angle (demoulding inclination) is provided for the drawing of the insert, and the drawing of the insert is facilitated.

In some embodiments, the first fixed mold core, the second fixed mold core and the movable mold core are respectively provided with two acupoints, the two acupoints of the first fixed mold core are in one-to-one correspondence with the two acupoints of the movable mold core in the first station, and the two acupoints of the second fixed mold core are in one-to-one correspondence with the two acupoints of the movable mold core in the second station.

By arranging two acupoints in the mold core, namely one mold with two acupoints or one mold with two molding cavities, compared with one mold with one acupoint, the injection mold can be fully utilized, and the production efficiency of products is improved.

In some embodiments, each set of moving die systems further comprises a tunnel row position, the tunnel row position is opposite to the core position, one end of the tunnel row position is clung to a local surface of the core when the first station is closed, and the tunnel row position is far away from the core when the first station is opened.

Through setting up tunnel line position to form the trompil on the main part shell body, tunnel line position is relative with the core position, compares in not setting up tunnel line position, and adds convex post and makes post and movable mould benevolence and first fixed mould benevolence bump in the position that corresponds with tunnel line position on the core, in order to form the trompil on the main part shell body, can shorten the stroke of core when the drawing of patterns, reduced the stroke requirement of core, promoted the space utilization to injection mold.

In some embodiments, the first positioning mold plate is provided with an inclined guide post, the movable mold plate is provided with a sliding block, the sliding block is provided with an inclined guide hole, the inclined guide post is matched with the guide hole, and the tunnel line is installed on the sliding block; when the first station is closed, the inclined guide pillar is inserted into the guide hole and drives the sliding block to be close to the core so as to enable the tunnel row position to be tightly attached to the core, and when the first station is opened, the inclined guide pillar is pulled out of the guide hole and drives the sliding block to be far away from the core so as to enable the tunnel row position to be pulled away from the main shell body.

Through setting up oblique guide pillar and slider, can drive tunnel line position and core and take place to bump or tunnel line position keep away from the core when the mould compound die or divide the mould on first station, the mechanism transmission is stable, difficult emergence trouble.

The double-color injection mold for the main body shell of the shaver has at least one of the following beneficial effects:

1. The main body shell body with the structural support function is formed by one-step injection molding, the integrity is good, after the electric shaver falls and collides with the main body shell body, the electric shaver is not easy to crack, deform and other damages, and good protection is provided for components in the main body shell body, so that the service life of the electric shaver is prolonged, and the use experience of a user is improved; the light-transmitting area of the indicator lamp and the button seat on the main body shell of the shaver are set as the soft rubber piece, and the soft rubber piece and the main body shell body are molded into a whole by adopting a secondary injection molding process (a double-color injection molding process), so that the process of independently installing the soft rubber piece is saved, and the production efficiency is high;

2. Through setting up the mold insert, can avoid the local wall thickness of main part shell body too thick, make the wall thickness variation of main part shell body that sets up mold insert department even, main part shell body cools off evenly, reduce the risk that main part shell body surface produced sunken or wall thickness center produced the vacuum bubble, also can avoid setting up too much wall thickness shrink of main part shell body of mold insert department simultaneously, lead to the size deviation too big, influence the equipment effect;

3. the insert is not processed by a whole piece of material, and comprises a first insert body and a collision column, namely the insert is assembled by multiple parts, so that the manufacturing difficulty of the insert can be reduced;

4. The top end of the touch column is tightly attached to the local surface of the movable mold core, that is to say, the touch column is attached to the parting surface of the movable mold core, when the touch column is pulled out from the screw column after the screw column (BOSS column) is formed, the attaching part of the touch column and the parting surface (touch surface) of the movable mold core can play a role in ventilation, so that the pull-out of the touch column is facilitated;

5. In order to obtain the screw column, the cross section size of the corresponding part of the collision column and the screw column is matched with the screw hole size of the screw column, the screw column size on the main body shell of the shaver is smaller in overall length, if the overall length of the collision column is processed according to the same cross section size, the processing difficulty of the collision column and the processing difficulty of perforation are obviously increased, the collision column is designed into a large-diameter section and a small-diameter section, the cross section size of the small-diameter section is matched with the screw hole size of the screw column, the processing difficulty of the large-diameter section is lower than that of the small-diameter section, the processing difficulty of the large-diameter perforation is lower than that of the small-diameter perforation, and the overall processing difficulty of the collision column and the processing difficulty of perforation are also reduced while the screw hole size of the screw column is met;

6. the strip-shaped opening is formed in the side wall of the concave table, so that on one hand, the risk of material shortage or welding line generation at the screw column can be reduced, the structural strength of the screw column can be influenced by the material shortage and the welding line, and on the other hand, bone positions (second reinforcing ribs) can be formed at the strip-shaped opening to support the screw column and strengthen the structural strength of the screw column;

7. The cross section dimension of the insert is gradually reduced along the direction close to the movable die core, namely the insert has an inclined angle in the die stripping direction, so that a die drawing angle (demoulding inclination) is provided for the extraction of the insert, and the extraction of the insert is facilitated;

8. By arranging two acupoints in the mold core, namely one mold with two acupoints or one mold with two cavities (one mold with two molding cavities), compared with one mold with one acupoint, the injection mold can be fully utilized, and the production efficiency of products is improved;

9. By arranging the tunnel row position to form the opening on the main shell body, the tunnel row position is opposite to the position of the core, compared with the situation that the tunnel row position is not arranged, the position on the core corresponding to the tunnel row position is additionally provided with the protruding column and the column is enabled to collide with the movable mold core and the first fixed mold core to form the opening on the main shell body, so that the stroke of the core during demolding can be shortened, the stroke requirement of the core is reduced, and the space utilization degree of the injection mold is improved;

10. Through setting up oblique guide pillar and slider, can drive tunnel line position and core and take place to bump or tunnel line position keep away from the core when the mould compound die or divide the mould on first station, the mechanism transmission is stable, difficult emergence trouble.

Drawings

The above features, technical features, advantages and implementation manners of a dual-color injection mold for a main body housing of a shaver will be further described in a clear and understandable manner with reference to the accompanying drawings, in which the preferred embodiments are described below:

FIG. 1 is a schematic overall structure of an embodiment of the present application;

FIG. 2 is a schematic diagram of a movable mold plate and a movable mold insert according to an embodiment of the present application;

FIG. 3 is a schematic view of a first mold plate and a first mold insert according to an embodiment of the present application;

FIG. 4 is a schematic view of the structure of a second mold plate and a second mold insert according to an embodiment of the present application;

fig. 5 is an exploded view of a razor body housing in an embodiment of the application;

Fig. 6 is a schematic view of a razor body housing in an embodiment of the application;

FIG. 7 is a schematic view of a structure of the main housing body corresponding to the insert in the embodiment of the application;

FIG. 8 is a schematic diagram of the positions of the movable mold insert, the mold core and the tunnel row after mold closing in the embodiment of the application;

FIG. 9 is an enlarged view of portion A of FIG. 8;

FIG. 10 is an exploded view of FIG. 8;

FIG. 11 is a schematic view of the structure of a middle core according to an embodiment of the present application;

FIG. 12 is a schematic view of the structure of the first insert according to an embodiment of the present application;

FIG. 13 is a schematic view of the structure of a strike column in an embodiment of the application;

FIG. 14 is a schematic view of the structure of an insert in an embodiment of the application;

Fig. 15 is a schematic view of another view of an insert in an embodiment of the application.

Reference numerals illustrate:

The novel shaver comprises a first fixed mold plate 1, a first fixed mold core 2, a second fixed mold plate 3, a second fixed mold core 4, a movable mold plate 5, a movable mold core 6, a mold core 7, a core mold 71, an insert 72, a first insert 721, a collision column 722, a main body shell 8, a soft rubber piece 9, a shaver main body shell 10, a first reinforcing rib 11, a screw column 12, a strip-shaped opening 13, a second reinforcing rib 14, an acupuncture point 15, a tunnel line position 16, an inclined guide column 17, a sliding block 18, a guide hole 19, a concave table 20, a large-diameter section 21, a small-diameter section 22, a perforation 23 and an indicator light transmitting region 24.

Detailed Description

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will explain the specific embodiments of the present application with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the application, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.

For the sake of simplicity of the drawing, the parts relevant to the present application are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

In this context, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

In addition, in the description of the present application, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In order to obtain the main body shell body through one-time injection molding, improve the integrity of the main body shell body, after the electric shaver falls and collides, the electric shaver is not easy to crack, deform and other damages, and good protection is provided for components in the main body shell body, so that the service life of the electric shaver is prolonged, the use experience of a user is improved, and referring to fig. 1-15, the application provides a double-color injection mold for the main body shell of the shaver, which comprises the following components:

The first fixed die core 2 is arranged on the first fixed die plate 1; the second fixed die plate 3 and the second fixed die core 4 are positioned at a second station, and the second fixed die core 4 is arranged on the second fixed die plate 3; two groups of identical movable mould systems, each group of movable mould systems comprises a movable mould plate 5, a movable mould core 6 and a mould core 7, the movable mould core 6 is arranged on the corresponding movable mould plate 5, the two groups of movable mould systems are respectively positioned at a first station and a second station, and the positions of the two groups of movable mould systems can be changed by rotating; the first fixed die core 2, the movable die core 6 and the die core 7 which are positioned at the first station are clamped to form a first die cavity, and the first die cavity is injection molded to form a main body shell body 8; when the main body shell body 8 and the movable die system positioned at the first station rotate together to the second station, the second fixed die core 4, the movable die core 6, the core 7 and the main body shell body 8 positioned at the second station are assembled to form a second cavity, the second cavity is injection-molded to form a soft rubber piece 9, and the main body shell body 8 and the soft rubber piece 9 are combined to form the main body shell 10 of the shaver.

In this embodiment, the inner cavity surface of the main body 8 is adapted to the surface of the core 7, and the outer surface of the main body 8 is adapted to the surface of the molding cavity formed by the movable mold core 6 and the first fixed mold core 2, in this embodiment, the main body 8 provides a structural support function, so as to provide protection for components in the main body 8, the soft plastic part has good elasticity and a certain light transmission function, and can be used as a button seat, provide good restoring force for a button on the main body shell of the shaver, and also can be used as a lampshade, so that the lamplight of the indicator lamp in the main body shell of the shaver is transmitted out of the soft plastic part.

In the embodiment, the main housing body 8 is formed by one-time injection molding, so that the integrity is good, and the electric shaver is not easy to crack, deform and other damages after falling and collision, so that good protection is provided for components in the main housing body 8, the service life of the electric shaver is prolonged, and the use experience of a user is improved; the light-transmitting area 24 of the indicator lamp and the button seat on the main body shell 10 of the shaver are arranged as the soft rubber piece 9, the soft rubber piece 9 and the main body shell 8 are integrally molded by adopting a secondary injection molding process (a double-color injection molding process), the process of independently installing the soft rubber piece 9 is saved, and the production efficiency is high.

In this embodiment, the glue feeding system may adopt a hot runner process or a cold runner process, and the present application does not limit the glue feeding system. When the cold runner process is adopted, the fine water gap dispensing and glue feeding mode of the three-plate die is adopted preferentially.

Referring to fig. 7 to 11, in one embodiment, the core 7 includes a core mold 71 and inserts 72 located at both sides of the core mold 71, a predetermined gap is provided between the inserts 72 and the core mold 71, the first reinforcing bead 11 may be formed in the main housing body 8 by injection molding, a predetermined gap is also provided between the inserts 72 and the outer wall of the first cavity, and a housing at a corresponding position in the main housing body 8 may be formed by injection molding.

It can be understood that by setting the insert 72, the local wall thickness of the main housing body 8 can be avoided from being too thick, so that the wall thickness of the main housing body 8 at the position where the insert 72 is arranged is changed uniformly, the main housing body 8 is cooled uniformly, the risk that the surface of the main housing body 8 is sunken or the center of the wall thickness generates vacuum bubbles is reduced, and meanwhile, too much wall thickness shrinkage of the main housing body 8 at the position where the insert 72 is arranged can be avoided, so that the size deviation is too large, and the assembly effect is affected.

Referring to fig. 7-15, in one embodiment, the insert 72 includes a first insert body 721 and a collision post 722, the first insert body 721 is provided with a recess 20 and a through hole 23, the through hole 23 passes through a bottom surface of the recess 20, and the collision post 722 is adapted to pass through the through hole 23 and out of the bottom surface of the recess 20 to form the screw post 12 in the main housing body 8 after injection molding. It will be appreciated that the insert 72 includes the first insert 721 and the abutment 722, and that the insert 72 is not machined from a single piece of material, i.e., the insert 72 is assembled from multiple parts, which reduces the difficulty of manufacturing the insert 72. If it is desired that the insert 72 be machined from a single piece of material (the insert 72 is a single piece), it is difficult or costly to machine both the portion of the abutment post 722 that extends beyond the recess 20 and the recess 20 itself.

Referring to fig. 7-9, 11, 14, and 15, in one embodiment, the top end of the touch post 722 is in close contact with a partial surface of the movable mold core 6. It should be noted that, the top end of the touch column 722 is tightly attached to the local surface of the movable mold core 6, that is, the touch column 722 is attached to the parting surface of the movable mold core 6, and when the touch column 722 is pulled out from the screw column 12 after the screw column 12 (BOSS column) is formed, the attachment position of the touch column 722 and the parting surface (touch surface) of the movable mold core 6 can play a role in ventilation, which is beneficial to the pulling out of the touch column 722.

Referring to fig. 13-15, in one embodiment, the bump post 722 includes a large diameter section 21 and a small diameter section 22, the large diameter section 21 is located in the through hole 23, the small diameter section 22 is exposed from the through hole 23, and the junction of the large diameter section 21 and the small diameter section 22 is located at the bottom surface of the recess 20.

It will be appreciated that, in order to obtain the screw pillar 12, the cross-sectional dimensions of the portion corresponding to the bump pillar 722 and the screw pillar 12 should be adapted to the screw hole dimension of the screw pillar 12, in general terms, the screw pillar 12 on the main body housing 10 of the shaver is smaller in size, if the bump pillar 722 is processed according to the same cross-sectional dimension, this clearly increases the processing difficulty of the bump pillar 722 and the processing difficulty of the through hole 23, the bump pillar 722 is designed into the large diameter section 21 and the small diameter section 22, the cross-sectional dimension of the small diameter section 22 is adapted to the screw hole dimension of the screw pillar 12, the large diameter section 21 is lower than the processing difficulty of the small diameter section 22, the large diameter through hole 23 is lower than the small diameter through hole 23, and the overall processing difficulty of the bump pillar 722 and the processing difficulty of the through hole 23 are also reduced while satisfying the screw hole dimension of the screw pillar 12.

Referring to fig. 7 to 12, 14 and 15, in one embodiment, the sidewall of the recess 20 is provided with a bar-shaped opening 13, and the second reinforcing rib 14 may be formed in the main housing body 8 by injection molding, and the second reinforcing rib 14 is used to reinforce the screw column 12.

It should be noted that, by providing the strip-shaped opening 13 on the side wall of the recess 20, on one hand, the risk of material shortage or welding line generation at the screw column 12 is reduced, and the material shortage and welding line affect the structural strength of the screw column 12, and on the other hand, a bone site (second reinforcing rib 14) is formed at the strip-shaped opening 13, so as to provide support for the screw column 12 and enhance the structural strength of the screw column 12.

Referring to fig. 14 and 15, in one embodiment, the cross-sectional dimension of the insert 72 is gradually reduced in a direction approaching the movable mold core 6. It will be appreciated that the cross-sectional dimension of the insert 72 tapers in a direction approaching the moving die core 6, i.e., the insert 72 has an angle of inclination in the stripping direction, which provides a draft angle (draft angle) for extraction of the insert 72, facilitating extraction of the insert 72.

Referring to fig. 1-4, 8 and 10, in one embodiment, the first fixed mold core 2, the second fixed mold core 4 and the movable mold core 6 are respectively provided with two acupoints 15, the two acupoints 15 of the first fixed mold core 2 are in one-to-one correspondence with the two acupoints 15 of the movable mold core 6 in the first station, and the two acupoints 15 of the second fixed mold core 4 are in one-to-one correspondence with the two acupoints 15 of the movable mold core 6 in the second station. By arranging two acupoints 15 in the mold core, namely one mold with two acupoints or one mold with two molding cavities, compared with one mold with one acupoint, the injection mold can be fully utilized, and the production efficiency of products is improved. It will be appreciated that in other embodiments, a single mold with multiple cavities, i.e., a single mold insert with multiple molding cavities (mold cavities), may be used.

Referring to fig. 1, 2, 8 and 10, in one embodiment, each movable mold system further includes a tunnel row 16, where the tunnel row 16 is opposite to the core 7, and one end of the tunnel row 16 is in close contact with a local surface of the core 7 when the first station is closed, and the tunnel row 16 is far away from the core 7 when the first station is opened.

It is noted that, by setting the tunnel line position 16 to form the opening on the main housing body 8, the tunnel line position 16 is opposite to the position of the core 7, compared with the situation that the tunnel line position 16 is not set, the position of the core 7 corresponding to the tunnel line position 16 is additionally provided with the protruding pillar and the pillar is made to collide with the movable mold core 6 and the first fixed mold core 2, so as to form the opening on the main housing body 8, the stroke of the core 7 during demolding can be shortened, the stroke requirement of the core 7 is reduced, and the space utilization degree of the injection mold is improved.

Referring to fig. 1-3, 8 and 10, in one embodiment, the first positioning mold plate 1 is provided with an inclined guide post 17, the moving mold plate 5 is provided with a sliding block 18, the sliding block 18 is provided with an inclined guide hole 19, the inclined guide post 17 is matched with the guide hole 19, and the tunnel row position 16 is mounted on the sliding block 18; the inclined guide post 17 is inserted into the guide hole 19 and drives the slide block 18 to be close to the core 7 during die assembly of the first station so as to enable the tunnel row position 16 to be closely attached to the core 7, and the inclined guide post 17 is pulled out of the guide hole 19 and drives the slide block 18 to be far away from the core 7 during die assembly of the first station so as to enable the tunnel row position 16 to be pulled away from the main shell body 8. By arranging the inclined guide post 17 and the sliding block 18, the tunnel row position 16 and the core 7 are driven to collide or the tunnel row position 16 is far away from the core 7 when the die on the first station is clamped or split, so that the mechanism is stable in transmission and difficult to fail.

It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.

Claims (10)

1. A razor body housing dual color injection mold comprising:

the first die core is arranged on the first die plate;

The second fixed die plate and the second fixed die core are positioned at a second station, and the second fixed die core is arranged on the second fixed die plate;

The two groups of the same movable mould systems are respectively positioned at a first station and a second station, and the positions of the two groups of movable mould systems can be changed by rotating;

The first fixed die core, the movable die core and the core which are positioned at the first station are clamped to form a first cavity, and the first cavity is injection-molded to form a main shell body;

When the main body shell body and the movable die system positioned at the first station jointly rotate to the second station, the second fixed die core, the movable die core, the core and the main body shell body positioned at the second station are clamped to form a second cavity, the second cavity is injection molded to form a soft rubber piece, and the main body shell body and the soft rubber piece are combined to form a main body shell of the shaver.

2. The razor body case double-shot mold according to claim 1, wherein the core comprises a core mold and inserts positioned at both sides of the core mold, a preset gap is provided between the inserts and the core mold, a first reinforcing rib is formed in the body case body by injection molding, a preset gap is also provided between the inserts and the outer wall of the first cavity, and a housing at a corresponding position in the body case body is formed by injection molding.

3. The razor body case dual color injection mold of claim 2, wherein said insert comprises a first insert body provided with a recess and a through hole passing through a bottom surface of said recess, and a bump post adapted to pass through said through hole and beyond said bottom surface of said recess to form a screw post in said body case body after injection molding.

4. A dual-color injection mold for a razor body housing according to claim 3, wherein the top end of said abutment is in close contact with the partial surface of said movable mold core.

5. A razor body housing dual color injection mold according to claim 3, wherein said bump post comprises a large diameter section and a small diameter section, said large diameter section being located in said perforation, said small diameter section being exposed in said perforation, the junction of said large diameter section and said small diameter section being located at the bottom of said recess.

6. A razor body case bicolor injection mold according to claim 3, wherein the side wall of the recess is provided with a strip-shaped opening, and a second reinforcing rib for reinforcing the screw post is formed in the body case body by injection molding.

7. The dual color injection mold of claim 2, wherein said insert has a cross-sectional dimension that tapers in a direction toward said movable mold core.

8. The razor main body case double-shot mold according to any one of claims 1 to 7, wherein the first fixed mold core, the second fixed mold core and the movable mold core are provided with two acupoints, the two acupoints of the first fixed mold core are in one-to-one correspondence with the two acupoints of the movable mold core in the first station, and the two acupoints of the second fixed mold core are in one-to-one correspondence with the two acupoints of the movable mold core in the second station.

9. The razor body case dual color injection mold of claim 8, wherein each set of said movable mold system further comprises a tunnel row, said tunnel row being opposite said core, one end of said tunnel row being in close proximity to a localized surface of said core when said first station is closed and said tunnel row being spaced from said core when said first station is opened.

10. The double-shot injection mold of claim 9, wherein the first mold plate is provided with an inclined guide post, the movable mold plate is provided with a slide block, the slide block is provided with an inclined guide hole, the inclined guide post is matched with the guide hole, and the tunnel row is arranged on the slide block; when the first station is closed, the inclined guide pillar is inserted into the guide hole and drives the sliding block to be close to the core so as to enable the tunnel row position to be tightly attached to the core, and when the first station is opened, the inclined guide pillar is pulled out of the guide hole and drives the sliding block to be far away from the core so as to enable the tunnel row position to be pulled away from the main shell body.