CN223419983U - A mold structure for injection molding a base shell - Google Patents

Abstract

The present utility model relates to the technical field of injection molds, and in particular to a mold structure for injection molding a base shell, comprising an ejector system, a pouring system, a mold core assembly and a slide assembly; the mold core assembly is provided with an upper mold core and a lower mold core, the upper mold core is provided with a top insert for forming a top groove of the shell, the slide assembly is provided with a first slide, a second slide, a third slide and a fourth slide for molding the four sides of the shell, the pouring system is provided with a main channel, a first submerged flow channel and a second submerged flow channel, the first submerged flow channel is connected to the main channel, and is provided at the first slide for pouring one end of the shell; the second submerged flow channel is connected to the main channel, and is provided at the third slide for pouring the other end of the shell. In summary, by diving glue from the side through the slide, the base shell can be simply and conveniently injection molded, the production efficiency is improved, and the appearance of the shell is made more beautiful.

Description

Mould structure for injection molding of base shell

Technical Field

The utility model relates to the technical field of injection molds, in particular to a mold structure for injection molding of a base shell.

Background

The mold is an important equipment indispensable in injection molding. Injection molding is a method of injecting a plastic material in a hot-melt state into a closed molding space having a desired shape in a mold at a high speed, cooling and solidifying the plastic material, and opening the mold to eject a solidified plastic processed product to obtain a molded product.

The injection molding method has the characteristics of low molding cost, short molding period, simple molding process, easiness in molding plastic products with complex shapes and the like, so that the injection molding method is applied to the field of plastic product manufacturing, and along with the continuous improvement of the technological level, the requirements of people on the appearance quality of the products are more strict.

The traditional injection molding technology generally adopts side glue feeding, but the appearance of the product is affected, a water gap is needed to be manually cut off, the product is easy to damage, and the automatic production cannot be realized, and the production period of the die is long and the cost is high.

The glue feeding system is the most basic component part of the injection mold, and the glue feeding position is the most obvious factor affecting the appearance, the size and the injection production of the injection molding part.

The existing mould glue feeding structure is characterized in that the glue feeding structure is directly arranged outside the sliding block, and the glue feeding trace is formed on the surface of a product after molding by the design, so that the appearance of the product is influenced.

For example, when the top surface of the shell plastic part is an appearance surface and no glue feeding points are allowed, and four sides of the shell plastic part are provided with straight body surfaces without draft angles, a simple and convenient mold structure needs to be designed, and the glue feeding is performed from the side surface through the line positions, so that the product requirement is met.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art and provides a technical scheme capable of solving the problems.

The utility model provides a die structure for injection molding of a base shell, which comprises a thimble system, a pouring system, a die core assembly and a row position assembly, wherein the die core assembly and the row position assembly are matched with each other to form an injection molding cavity, the die core assembly is provided with an upper die core and a lower die core, the upper die core is provided with a top insert for forming a top groove of the shell, the row position assembly is provided with a first row position, a second row position, a third row position and a fourth row position for forming four sides of the shell, the first row position and the third row position are respectively positioned at two ends of the shell in the long side direction, the second row position and the fourth row position are respectively positioned at two sides of the shell in the short side direction, the pouring system is provided with a main runner, a first submerged runner and a second submerged runner, the first submerged runner is communicated with the main runner and is arranged at the first row position for pouring one end of the shell, and the second submerged runner is communicated with the main runner and is arranged at the third row position for pouring the other end of the shell.

The injection molding machine comprises a first row of injection molding cavities, a first insert, a first inclined guide post, a first ejector rod and a first shovel base, wherein one end, close to the injection molding cavities, of the first insert is provided with a first submerged nozzle, the first submerged nozzle and the first submerged channel form a communicating state, so that hot fluid is injected into the injection molding cavities, one end, far away from the injection molding cavities, of the first insert is abutted to the first shovel base, a first inclined guide hole is formed in the position, corresponding to the first inclined guide post, of the first insert, the first inclined guide hole is matched with the first inclined guide post to form sliding connection, and a first ejector pin is arranged in the first ejector rod and used for ejecting the submerged fluid in the first submerged channel.

As a further scheme of the utility model, one end of the first insert, which is close to the injection molding cavity, is also provided with a first convex column, so that a first through hole at one end of the shell is formed by injection molding.

The second row is provided with a second insert, a second inclined guide post and a second shovel base, one end of the second insert, which is close to the injection molding cavity, is provided with a second convex post so as to form a second through hole on one side of the shell in an injection molding mode, one end of the second insert, which is far away from the injection molding cavity, is abutted to the second shovel base, a second inclined guide hole is formed in the position, corresponding to the second inclined guide post, of the second insert, and the second inclined guide hole and the second inclined guide post are matched with each other to form sliding connection.

The upper die core is provided with an inclined guide groove, the top insert penetrates through the inclined guide groove and can move obliquely along the inclined guide groove and is separated from the top groove of the base shell, one end, far away from the injection molding cavity, of the top insert is provided with a separation rod, and the separation rod is in transmission connection with the top insert, so that the top insert is driven to move obliquely for a certain distance along the inclined guide groove.

As a further scheme of the utility model, a passive hook is arranged at one end of the top insert close to the release rod, an active hook is arranged at one end of the release rod corresponding to the passive hook, and the passive hook and the active hook are matched with each other to form transmission connection.

According to the utility model, a limiting step is further arranged at one end of the top insert, which is far away from the injection molding cavity, and a limiting projection is arranged at the position, corresponding to the limiting step, of the upper die core, so that the limiting step is abutted against the limiting projection after the top insert moves along the inclined guide groove in an inclined manner for a certain distance.

As a further scheme of the utility model, the side wall of the injection molding cavity formed by the top insert is provided with a top protruding strip, and the top protruding strip is used for injection molding to form a long groove on the inner side wall of the shell.

The ejector pin system is further provided with an inclined ejector pin and an inclined ejector pin, one end of the inclined ejector pin is provided with a third convex column for injection molding of a third through hole in the long groove, the other end of the inclined ejector pin is provided with an inclined sliding block, one end of the inclined ejector pin corresponding to the inclined sliding block is provided with an inclined sliding rail, and the inclined sliding rail and the inclined sliding block are matched with each other to enable the inclined ejector pin to be connected with the inclined guide post in a sliding mode.

Compared with the prior art, the utility model has the beneficial effects that:

1. Through setting up corresponding line position structure at the long limit direction's of base casing both ends to set up corresponding submerged channel in line position structure inside, utilize the submerged nozzle to carry out the injecting glue at the non-outward appearance face of casing, thereby can avoid the outward appearance face to appear advancing the gluey point, make the outward appearance face accord with the production requirement.

2. The first ejector rod and the first ejector pin are arranged, so that the diving material is ejected out, the diving material is matched with the first insert to perform corresponding repeated injection molding operation, and the injection molding efficiency is improved.

3. And the inclined guide groove and the top insert are arranged, so that a top groove of the base shell is formed by injection molding, and meanwhile, a long groove on the inner side wall of the shell can be formed by injection molding by utilizing a top convex strip of the top insert, so that the shell meets the preset injection molding requirement.

Therefore, through the improvement, the utility model can provide a mold structure for injection molding of the base shell, the base shell is simply and conveniently injection molded through diving from the side surface by the slide, the production efficiency is improved, and the appearance surface of the shell is more attractive.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of a mold insert assembly and a row position assembly according to the present utility model;

FIG. 2 is a schematic cross-sectional view of a first row of the present utility model and a base housing;

FIG. 3 is a schematic diagram of a first row of the present utility model and a main runner;

FIG. 4 is a schematic diagram of a second row bit structure according to the present utility model;

FIG. 5 is a schematic cross-sectional view of a top insert of the present utility model;

FIG. 6 is a schematic view of the structure of the top rib of the present utility model;

FIG. 7 is a schematic view of the structure of the oblique ejector pin and the oblique ejector pin of the present utility model;

fig. 8 is a schematic structural view of the base housing of the present utility model.

Reference numerals and names in the drawings are as follows:

10 base shell, 11 top groove, 12 first through hole, 13 second through hole, 14 long groove, 15 third through hole, 20 thimble system, 21 inclined ejection column, 22 inclined slide rail, 23 inclined ejection pin, 24 third ejection column, 25 inclined slide block, 30 pouring system, 31 main runner, 32 first diving runner, 33 second diving runner, 34 diving material, 40 mould core component, 41 lower mould core, 42 upper mould core, 43 inclined guide groove, 44 limit bump, 50 top insert, 51 top convex strip, 52 passive hook, 53 limit step, 54 ejection rod, 55 active hook, 60 row component, 61 third row position, 62 fourth row position, 70 first row position, 71 first inclined guide column, 72 first shovel base, 73 first diving insert, 74 first water gap, 75 first ejection column, 76 first ejection rod, 77 first ejection pin, 80 second row position, 81 second inclined guide column, 82 second shovel base, 83 second insert, 84 second ejection column.

Detailed Description

The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 8, in an embodiment of the present utility model, a mold structure for injection molding a base housing 10 includes a thimble system 20, a pouring system 30, and a mold cavity assembly 40 and a row positioning assembly 60 that are matched to each other to form an injection molding cavity, wherein the mold cavity assembly 40 is provided with an upper mold cavity 42 and a lower mold cavity 41, the upper mold cavity 42 is provided with a top insert 50 for forming a top groove 11 of the housing, the row positioning assembly 60 is provided with a first row position 70, a second row position 80, a third row position 61 and a fourth row position 62 for forming four sides of the housing, the first row position 70 and the third row position 61 are respectively located at two ends of the housing in a long side direction, the second row position 80 and the fourth row position 62 are respectively located at two sides of the housing in a short side direction, the pouring system 30 is provided with a main runner 31, a first submerged runner 32 and a second submerged runner 33, the first submerged runner 32 is connected to the main runner 31 and is disposed at the first row position 70 for pouring one end of the housing, and the second submerged runner 33 is connected to the third submerged runner 61 for pouring the other end of the housing.

Specifically, since the top groove 11 is formed on the upper portion of the base housing 10, and the top groove 11 is used for placing other electronic products, in order to avoid friction to other electronic products, or to affect the overall appearance, the side wall of the top groove 11 should not be provided with a glue injection port, and the surface of the product has glue feeding traces, so that the appearance of the product is affected.

Secondly, by arranging corresponding line structures at two ends of the base shell 10 in the long side direction and arranging corresponding diving channels in the line structures, glue injection is carried out on the non-appearance surface of the shell by utilizing the diving ports, so that glue inlet points on the appearance surface can be avoided, and the appearance surface meets production requirements.

As shown in fig. 2 and 3, preferably, the first row 70 is provided with a first insert 73, a first inclined guide post 71, a first ejector rod 76 and a first shovel base 72, one end of the first insert 73 close to the injection molding cavity is provided with a first submerged nozzle 74, the first submerged nozzle 74 and the first submerged channel 32 form a communicating state, so that hot fluid is injected into the injection molding cavity, one end of the first insert 73 far away from the injection molding cavity is abutted against the first shovel base 72, a first inclined guide hole is arranged at a position of the first insert 73 corresponding to the first inclined guide post 71, the first inclined guide hole and the first inclined guide post 71 are matched with each other to form sliding connection, and the first ejector rod 76 is internally provided with a first ejector pin 77, and the first ejector pin 77 is used for ejecting the submerged fluid 34 in the first submerged channel 32.

Specifically, the diagonal guide post forms a driving force for moving the first insert 73 away from the injection cavity during mold opening, and makes the first insert move backward by a certain distance, thereby separating the first submerged nozzle 74 from the injection cavity and breaking the submerged material 34 in the first submerged channel 32. The first ejector pins 77 inside the first ejector pins 76 may then eject the diving material 34 under the driving of the ejector pin system 20, so that the diving material 34 is separated from the first diving channel 32 and falls off. The shovel base can abut against the insert to enable the insert to keep a preset position.

Second, since both ends of the base housing 10 have the same structure, the third row of positions 61 can be provided with the same structure and components as the first row of positions 70, and the injection molding operation can be performed.

As shown in fig. 3, preferably, the end of the first insert 73 near the injection molding cavity is further provided with a first protrusion 75, so as to form the first through hole 12 at one end of the housing by injection molding.

Specifically, since the plurality of first through holes 12 are further provided at both ends of the base housing 10, a corresponding plurality of first bosses 75 may be provided on the first insert 73, thereby forming a corresponding first through hole 12.

As shown in fig. 4, preferably, the second row 80 is provided with a second insert 83, a second inclined guide post 81 and a second shovel base 82, one end of the second insert 83, which is close to the injection molding cavity, is provided with a second convex post 84, so as to form a second through hole 13 on one side of the shell by injection molding, one end of the second insert 83, which is far away from the injection molding cavity, is abutted against the second shovel base 82, a second inclined guide hole is arranged at a position of the second insert 83, which corresponds to the second inclined guide post 81, and the second inclined guide hole and the second inclined guide post 81 are matched with each other to form sliding connection.

Specifically, as well, the second inclined guide post 81 and the second inclined guide hole cooperate with each other, thereby driving the second insert 83 to move. Since the two sides of the base housing 10 have similar structures, the fourth row 62 may also be disposed on the second row 80 for injection molding operations with similar structures and components.

As shown in fig. 5 and 6, preferably, the upper mold core 42 is provided with an inclined guide groove 43, the top insert 50 is inserted into the inclined guide groove 43 and can move obliquely along the inclined guide groove 43, and is separated from the top groove 11 of the base housing 10, one end of the top insert 50, which is far away from the injection molding cavity, is provided with a separation rod 54, and the separation rod 54 is in transmission connection with the top insert 50, so as to drive the top insert 50 to move obliquely along the inclined guide groove 43 for a certain distance.

Specifically, since the top recess 11 is provided at the upper portion of the base housing 10, the corresponding top insert 50 may be provided to perform molding processing, and in order to move the top insert 50, the corresponding ejector pin 54 may be provided, and the top insert 50 may be moved by driving the ejector pin 54 in mold opening or closing.

As shown in fig. 5, preferably, a passive hook 52 is disposed at an end of the top insert 50 near the release rod 54, an active hook 55 is disposed at an end of the release rod 54 corresponding to the passive hook 52, and the passive hook 52 and the active hook 55 cooperate with each other to form a transmission connection.

Specifically, during mold opening or mold closing, the top insert 50 is moved vertically, and since the top insert 50 needs to be moved obliquely by a certain distance, a special structure is required to be provided, so that the vertical movement of the release lever 54 can drive the top insert 50 to move obliquely. The force to vertically move the ejector pin 54 may be accomplished by a relatively loose drive connection, such as a hook-like connection, that is transmitted to the top insert 50 without impeding its angular movement.

As shown in fig. 6, preferably, a limit step 53 is further provided at an end of the top insert 50 away from the injection cavity, and a limit bump 44 is provided at a position of the upper mold core 42 corresponding to the limit step 53, so that the limit step 53 abuts against the limit bump 44 after the top insert 50 moves obliquely along the oblique guide groove 43 by a certain distance.

Specifically, after the top insert 50 moves obliquely for a certain distance, it can be driven by the limiting bump 44 of the upper mold core 42 to move in the corresponding vertical direction, so as to perform a normal demolding operation.

As shown in fig. 6, preferably, the side wall of the top insert 50 forming the injection molding cavity is provided with a top protruding strip 51, and the top protruding strip 51 is used for injection molding the long groove 14 of the inner side wall of the housing.

Specifically, since the side wall of the upper side of the base housing 10 is further provided with the long groove 14, the corresponding long groove 14 can be formed by providing the top insert 50 with the corresponding top protrusion 51.

As shown in fig. 7, preferably, the ejector pin system 20 is provided with an oblique ejector pin 21 and an oblique ejector pin 23, one end of the oblique ejector pin 23 is provided with a third convex pin 24 for injection molding of the third through hole 15 in the long groove 14, the other end of the oblique ejector pin 23 is provided with an oblique sliding block 25, one end of the oblique ejector pin 21 corresponding to the oblique sliding block 25 is provided with an oblique sliding rail 22, and the oblique sliding rail 22 and the oblique sliding block 25 are matched with each other to enable the oblique ejector pin 23 to be slidingly connected with the oblique sliding rail.

Specifically, since the long groove 14 of the base housing 10 is further provided with the third through hole 15, the corresponding oblique jacking column 21 and the oblique jacking needle 23 can be arranged to cooperate, so that the corresponding third through hole 15 is formed.

It will be appreciated that the mold structure may also be fitted with other prior art mating devices to form a finished injection mold. Such as upper templates, lower templates, etc.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (9)

1. The die structure for injection molding of the base shell is characterized by comprising a thimble system (20), a pouring system (30), a die core assembly (40) and a line position assembly (60), wherein an injection molding cavity is formed by matching the thimble system with the die core assembly, the die core assembly (40) is provided with an upper die core (42) and a lower die core (41), the upper die core (42) is provided with a top insert (50) for forming a top groove (11) of the shell, the line position assembly (60) is provided with a first line position (70), a second line position (80), a third line position (61) and a fourth line position (62) for forming four sides of the shell, the first line position (70) and the third line position (61) are respectively positioned at two ends of the shell in the long side direction, the second line position (80) and the fourth line position (62) are respectively positioned at two sides of the shell in the short side direction, the pouring system (30) is provided with a main runner (31), a first submerged runner (32) and a second submerged runner (33), the first submerged runner (32) is communicated with the main runner (31), and the first submerged runner (31) is communicated with the second submerged runner (33), and the first submerged runner (33) is communicated with the first end (31).

2. The mold structure for injection molding of a base shell according to claim 1, wherein the first row position (70) is provided with a first insert (73), a first inclined guide post (71), a first ejector rod (76) and a first shovel base (72), one end, close to an injection molding cavity, of the first insert (73) is provided with a first submerged nozzle (74), the first submerged nozzle (74) and the first submerged channel (32) form a communicating state so as to inject hot fluid into the injection molding cavity, one end, far away from the injection molding cavity, of the first insert (73) is abutted against the first shovel base (72), a first inclined guide hole is formed in a position, corresponding to the first inclined guide post (71), of the first insert (73), the first inclined guide hole and the first inclined guide post (71) are matched with each other to form sliding connection, a first ejector pin (77) is arranged in the first ejector rod (76), and the first ejector pin (77) is used for ejecting the submerged fluid (34) in the first submerged channel (32).

3. A mould structure for injection moulding of a base housing according to claim 2, characterised in that the end of the first insert (73) adjacent to the injection moulding cavity is further provided with a first boss (75) for injection moulding a first through hole (12) in one end of the housing.

4. The mold structure for injection molding of a base housing according to claim 1, wherein the second row position (80) is provided with a second insert (83), a second inclined guide post (81) and a second shovel base (82), one end of the second insert (83) close to an injection molding cavity is provided with a second convex post (84) so as to form a second through hole (13) on one side of the housing in injection molding, one end of the second insert (83) far away from the injection molding cavity is abutted to the second shovel base (82), a second inclined guide hole is formed in a position of the second insert (83) corresponding to the second inclined guide post (81), and the second inclined guide hole and the second inclined guide post (81) are matched with each other to form sliding connection.

5. The mold structure for injection molding of a base housing according to claim 1, wherein the upper mold core (42) is provided with an inclined guide groove (43), the top insert (50) is inserted into the inclined guide groove (43) and can move obliquely along the inclined guide groove (43) to be separated from the top groove (11) of the base housing (10), one end of the top insert (50) far away from the injection molding cavity is provided with a separation rod (54), and the separation rod (54) is in transmission connection with the top insert (50) so as to drive the top insert (50) to move obliquely along the inclined guide groove (43) for a certain distance.

6. The mold structure for injection molding of a base housing according to claim 5, wherein a passive hook (52) is provided at an end of the top insert (50) close to the release rod (54), an active hook (55) is provided at an end of the release rod (54) corresponding to the passive hook (52), and the passive hook (52) and the active hook (55) cooperate with each other to form a transmission connection.

7. The mold structure for injection molding of a base housing according to claim 1, wherein a limiting step (53) is further provided at an end of the top insert (50) away from the injection molding cavity, and a limiting bump (44) is provided at a position of the upper mold core (42) corresponding to the limiting step (53), so that the limiting step (53) abuts against the limiting bump (44) after the top insert (50) moves obliquely along the oblique guide groove (43) for a certain distance.

8. A mould structure for injection moulding of a base housing according to claim 1, characterised in that the side walls of the top insert (50) forming the injection moulding cavity are provided with top ribs (51), the top ribs (51) being adapted to be injection moulded to form long grooves (14) of the inner side walls of the housing.

9. The mold structure for injection molding of a base housing according to claim 1, wherein the ejector pin system (20) is provided with an oblique ejector pin (21) and an oblique ejector pin (23), one end of the oblique ejector pin (23) is provided with a third convex column (24) for injection molding of a third through hole (15) in the long groove (14), the other end of the oblique ejector pin (23) is provided with an oblique sliding block (25), one end of the oblique ejector pin (21) corresponding to the oblique sliding block (25) is provided with an oblique sliding rail (22), and the oblique sliding rail (22) and the oblique sliding block (25) are matched with each other, so that the oblique ejector pin (23) is slidingly connected with the oblique sliding rail.