CN217258074U - Earphone shell injection mold - Google Patents

Abstract

The utility model belongs to the technical field of molds, in particular to an earphone shell injection mold, which comprises a front mold frame, a rear mold frame, a front mold, a rear mold and a thimble mechanism; the front die is arranged on the front die frame, the rear die is arranged on the rear die frame, and one ends of the front die and the rear die, which are close to each other, are respectively provided with a plurality of cavities and cores; the front die is obliquely embedded with a first inclined column groove and a first inclined column end at the bottom of each cavity, and the rear die is obliquely embedded with a second inclined column end at the top of each core; the rear die is connected with a core-pulling block at the side of each core in a sliding manner, the core-pulling block can be close to or far away from the core, a forming groove is formed in the side wall of the core-pulling block close to the core, and a second inclined column groove is embedded in the top of the forming groove; when the die is closed, a die cavity, a die core, a first inclined column groove, a first inclined column end, a forming groove, a second inclined column groove and a second inclined column end form an earphone front shell forming cavity; when the mold is opened, the blocking is small, the front shell is smoothly separated from the mold core, the manual operation is not needed for auxiliary demolding, and the demolding efficiency is high.

Description

Earphone shell injection mold

Technical Field

The utility model belongs to the technical field of the mould, especially, relate to an earphone shell injection mold.

Background

The mould is used for obtaining various moulds and tools of required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material. The element has the name of "industrial mother".

An In-Ear earphone, also known as an In-canal earphone, an In-Ear earplug, or an In-Ear Monitor (i.e., IEM's english-name: In-Ear-Monitor), is an earphone used inside the human auditory organ, and according to its design, will seal the Ear canal of the user when In use. At present, the shell of the in-ear earphone is formed by injection molding through a mold, because the front shell of the in-ear earphone is obliquely provided with the sound outlet pipe, the edge of the sound outlet pipe is also protruded with a ring of sound outlet pipe clamping ring, when the earplug is installed on the in-ear earphone, the earplug is sleeved on the sound outlet pipe and is clamped on the sound outlet pipe clamping ring, and the earplug is prevented from falling off from the sound outlet pipe easily. The sound outlet pipe and the sound outlet pipe clamping ring of the front shell have the condition that the demolding is difficult due to structural reasons, and the condition that the lower shell of the earphone and the mold core are separated from each other unsmooth can appear in most of front shell injection molds of the in-ear earphones during demolding, so that the demolding is assisted by manual operation, and the operation efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an earphone shell injection mold, the play sound pipe and play sound pipe snap ring position that aim at solving the preceding shell among the prior art exist always and are difficult to the condition of drawing of patterns because of structural reason, and most of in-ear earphone's preceding shell injection mold can appear earphone inferior valve and the unsmooth condition of core separation when the drawing of patterns, need manual operation to assist the drawing of patterns, the lower technical problem of operating efficiency.

In order to achieve the above object, an embodiment of the present invention provides an earphone shell injection mold, which includes a front mold frame, a rear mold frame, a front mold, a rear mold and a thimble mechanism; the front die is arranged on the front die frame, the rear die is arranged on the rear die frame, and one ends, close to each other, of the front die and the rear die are respectively provided with a plurality of cavities and cores which are arranged in a one-to-one correspondence manner; the front die is obliquely embedded with a first inclined column groove and a first inclined column end at the bottom of each cavity, and the rear die is obliquely embedded with a second inclined column end at the top of each core; the rear die is connected with a core-pulling block at the side of each core in a sliding manner, the core-pulling block can be close to or far away from the core, a forming groove is formed in the side wall, close to the core, of the core, and a second inclined column groove is embedded in the top of the forming groove; when the die is closed, an earphone front shell forming cavity is formed among the die cavity, the core, the first inclined column groove, the first inclined column end, the forming groove, the second inclined column groove and the second inclined column end; the first inclined column groove and the second inclined column groove are oppositely arranged and can be close to or far away from each other, and the first inclined column groove and the second inclined column groove are used for forming a sound outlet pipe and a clamping ring of the front shell; the first inclined column end and the second inclined column end are oppositely arranged and can be close to or far away from each other, and the first inclined column end and the second inclined column end are used for forming an inner hole of the sound outlet pipe; the front end of the front mould frame is provided with a pouring gate, a flow channel communicated with the pouring gate and the earphone front shell forming cavity is arranged in the front mould, and the ejector pin mechanism is used for ejecting a front shell formed in the earphone front shell forming cavity.

Optionally, the front mould is slidably connected to the front mould frame; the front die is obliquely provided with a plurality of first embedded grooves in a penetrating manner, the first embedded grooves are obliquely arranged in the direction of the die opening and closing, and each first embedded groove is communicated with one die cavity; the first embedded groove is connected with a first core pulling column in a sliding mode, the first end of the first core pulling column is close to the cavity, and the first inclined column groove is formed in the first end of the first core pulling column; and a first traction mechanism is arranged between the front mould frame and the front mould, and when the mould is opened and closed, the first traction mechanism is used for drawing the first core pulling column to reciprocate along the first embedded groove, so that the first inclined column groove is driven to be far away from or close to the cavity.

Optionally, the first traction mechanism comprises a first traction block and a first moving block; one end of the front die, which is close to the front die frame, is provided with a first mounting groove communicated with the first embedded groove, the first moving block is connected to the first mounting groove in a sliding manner and is consistent with the moving direction of the first core-pulling column, and the first moving block is fixedly connected with the second end of the first core-pulling column; the first traction block is fixedly installed at one end, close to the front mold, of the front mold base and connected with the first moving block, and when the mold is opened and closed, the first traction block pulls the first moving block to move in a reciprocating mode, so that the first inclined column groove is driven to be far away from or close to the cavity.

Optionally, a first traction portion is arranged at one end, close to the first traction block, of the first moving block, and the first traction portion is perpendicular to the moving direction of the first moving block; the first traction block is provided with a first traction groove, and the first traction part is matched and slidably connected with the first traction groove.

Optionally, two opposite side walls of the first mounting groove are provided with first guide grooves, and the first guide grooves are parallel to the moving direction of the first core-pulling column; the two opposite side walls of the first moving block are respectively provided with a first guide block, and the two first guide blocks are respectively connected with the two first guide grooves in a sliding manner.

Optionally, two opposite side walls of the first mounting groove are respectively embedded with a first embedding block, and the two first guide grooves are respectively arranged on two side walls of the first embedding blocks, which are close to each other.

Optionally, a second mounting groove is formed in the rear mold beside each core, and the core pulling block is connected to the second mounting groove in a sliding manner; the core-pulling block is obliquely provided with a second embedded groove in a penetrating mode, the first embedded groove is obliquely arranged in the direction of the opening and closing die, the second embedded groove is connected with a second core-pulling column in a sliding mode, the first end of the second core-pulling column is close to the core, and the second inclined column groove is formed in the first end of the second core-pulling column; and a second traction mechanism is arranged between the front die and the rear die, and when the dies are opened and closed, the first traction mechanism is used for drawing the second core-pulling column and the core-pulling block to be successively far away from or close to the core.

Optionally, the second traction mechanism comprises a second traction block and a second moving block; the second moving block is connected to the second mounting groove in a sliding mode, a linkage groove is formed in one end, close to the second moving block, of the core pulling block, a linkage block is arranged at one end, close to the linkage groove, of the second moving block, the linkage block extends into the linkage groove, a movable gap is formed between the linkage block and the linkage groove, and the second end of the second core pulling rod is fixedly connected to the second moving block; the second traction block is fixedly installed at one end, close to the rear die, of the front die and connected with the second moving block, and when the dies are opened and closed, the second traction block pulls the second moving block to move in a reciprocating mode, so that the second core-pulling column and the core-pulling block are driven to be sequentially far away from or close to the mold core.

Optionally, a second traction groove is formed in one end, close to the second traction block, of the second moving block, and the second traction groove and the moving direction of the second moving block are arranged in an inclined mode; the second traction block is provided with a second traction part, and the second traction part is matched and slidably connected with the second traction groove.

Optionally, two opposite side walls of the second mounting groove are provided with second guide grooves, the second guide grooves are perpendicular to the direction of the opening and closing die, two opposite sides of the core pulling block and the second moving block are provided with second guide blocks in a protruding manner, and the two second guide blocks on the core pulling block and the second moving block are respectively connected to the two second guide grooves in a sliding manner.

Compared with the prior art, the embodiment of the utility model provides an above-mentioned one or more technical scheme among the earphone shell injection mold have one of following technological effect at least:

when the die is closed, an earphone front shell molding cavity is formed among the cavity, the core, the first inclined column groove, the first inclined column end, the molding groove, the second inclined column groove and the second inclined column end, molten plastic enters the earphone front shell molding cavity through the pouring gate along the flow channel, and the molten plastic is cooled and molded in the earphone front shell molding cavity to form an earphone front shell; during the die sinking, front mould and back mould part, first batter post groove with the second batter post groove is kept away from each other, makes the play sound pipe and the snap ring of preceding shell expose, first batter post end with the second batter post end is kept away from each other and is shifted out from the hole that goes out the sound pipe, the shaping groove of taking out the piece is kept away from the core, makes preceding shell expose and lie in on the core, and it is ejecting to block for a short time through the preceding shell of thimble mechanism on with the core at last, and preceding shell smoothly separates with the core, does not need manual operation to assist the drawing of patterns, and the drawing of patterns is efficient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of the earphone shell injection mold of the present invention.

Fig. 2 is an exploded view of the earphone shell injection mold of the present invention.

Fig. 3 is a first schematic view of the earphone shell injection mold of the present invention.

Fig. 4 is a cross-sectional view of fig. 3 according to the present invention.

Fig. 5 is a second partial structure decomposition schematic diagram of the earphone shell injection mold of the present invention.

Fig. 6 is a third partial structure decomposition schematic diagram of the earphone shell injection mold of the present invention.

Fig. 7 is a sectional view of a fourth local structure of the earphone shell injection mold of the present invention.

Fig. 8 is a fifth schematic partial view of the earphone shell injection mold of the present invention.

Fig. 9 is a schematic structural view of the front shell of the present invention.

Wherein, in the figures, the respective reference numerals:

a front mold frame 100, a sprue gate 110;

a rear mold frame 200, a push plate 210;

the front mold comprises a front mold 300, a cavity 310, a first oblique column groove 320, a first embedding groove 321, a first extraction column 322, a first oblique column end 330, a first installation groove 340, a first guide groove 341 and a first embedding block 342;

the rear die 400, the core 410, the second inclined column end 420, the core pulling block 430, the forming groove 431, the linkage groove 432, the second guide block 438, the second inclined column groove 440, the second embedding groove 441, the second core pulling column 442, the second mounting groove 450 and the second guide groove 451;

a thimble mechanism 500;

the sound outlet pipe 610, the inner hole 611 and the snap ring 620 are arranged in the front shell 600;

a first traction mechanism 700, a first traction block 710, a first traction groove 711, a first moving block 720, a first traction part 721 and a first guide block 722;

the second traction mechanism 800, the second traction block 810, the second traction part 812, the second moving block 820, the linkage block 821 and the second traction groove 821.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, referring to fig. 1 to 9, an injection mold for an earphone shell is provided, which includes a front mold frame 100, a rear mold frame 200, a front mold 300, a rear mold 400, and a thimble mechanism 500.

Referring to fig. 1 to 9, the front mold 300 is installed in the front mold frame 100, the rear mold 400 is installed in the rear mold frame 200, and a plurality of cavities 310 and cores 410 are respectively disposed at ends of the front mold 300 and the rear mold 400, which are close to each other.

Referring to fig. 1 to 9, the front mold 300 is obliquely inserted with a first inclined pillar groove 320 and a first inclined pillar end 330 at the bottom of each of the cavities 310, and the rear mold 400 is obliquely inserted with a second inclined pillar end 420 at the top of each of the cores 410. The rear die 400 is connected with a core-pulling block 430 at the side of each core 410 in a sliding manner, the core-pulling block 430 can be close to or far away from the core 410, a forming groove 431 is arranged on the side wall of the core 430 close to the core 410, and a second inclined column groove 440 is embedded in the top of the forming groove 431. When closed, a headphone front shell forming cavity is formed between cavity 310, core 410, first diagonal post channel 320, first diagonal post end 330, forming channel 431, second diagonal post channel 440, and second diagonal post end 420.

Referring to fig. 1 to 9, the first diagonal column groove 320 and the second diagonal column groove 440 are oppositely disposed and can be close to or away from each other, and the first diagonal column groove 320 and the second diagonal column groove 440 are used to form a sound outlet pipe 610 and a snap ring 620 of a front case 600. During the compound die, first batter post groove 320 with second batter post groove 440 is pressed close to each other, and during the die sinking, first batter post groove 320 with second batter post groove 440 keeps away from each other, is convenient for go out the drawing of patterns of sound pipe 610 and snap ring 620.

Referring to fig. 1 to 9, the first inclined post end 330 and the second inclined post end 420 are disposed opposite to each other and can be close to or away from each other, and the first inclined post end 330 and the second inclined post end 420 are used for forming an inner hole 611 of the sound tube 610. During the die sinking, first batter post end 330 with second batter post end 420 is pressed close to each other, during the die sinking, first batter post end 330 with second batter post end 420 keeps away from each other, the preceding shell 600 drawing of patterns of being convenient for.

Referring to fig. 1 to 9, a sprue gate 110 is disposed at a front end of the front mold frame 100, a runner (not shown) communicating the sprue gate 110 with the earphone front shell molding cavity is disposed in the front mold 300, the runner is of a runner structure commonly used in a mold, and the ejector pin mechanism 500 is configured to eject a front shell 600 molded in the earphone front shell molding cavity.

Referring to fig. 1-9, when the mold cavity 310, the mold core 410, the first batter post groove 320, the first batter post end 330, the molding groove 431, the second batter post groove 440 and the second batter post end 420 are closed, a front earphone shell molding cavity is formed, molten plastic enters the front earphone shell molding cavity through the pouring port 110 along a flow path, and the molten plastic is cooled and molded in the front earphone shell molding cavity to form a front earphone shell 600; when the mold is opened, the front mold 300 and the rear mold 400 are separated, the first inclined column groove 320 and the second inclined column groove 440 are far away from each other, the sound outlet pipe 610 and the clamping ring 620 of the front shell 600 are exposed, the first inclined column end 330 and the second inclined column end 420 are far away from each other and are moved out of the inner hole 611 of the sound outlet pipe 610, the forming groove 431 of the core extracting piece 430 is far away from the mold core 410, the front shell 600 is exposed and positioned on the mold core 410, finally the front shell 600 on the mold core 410 is ejected out through the ejector pin mechanism 500, the blocking is small, the front shell 600 and the mold core 410 are separated smoothly, the auxiliary demolding is not required to be performed through manual operation, and the demolding efficiency is high.

In another embodiment of the present invention, referring to fig. 1 to 9, the front mold 300 is slidably connected to the front mold frame 100, that is, the front mold 300 is slidably connected to the guide post of the front mold frame 100. The front mold 300 is obliquely provided with a plurality of first insertion grooves 321 in a penetrating manner, the first insertion grooves 321 are obliquely arranged in the mold opening and closing direction, and each first insertion groove 321 is communicated with one cavity 310. The first insertion groove 321 is slidably connected with a first extraction column 322, a first end of the first extraction column 322 is close to the cavity 310, and the first inclined column groove 321 is arranged at a first end of the first extraction column 322. A first traction mechanism 700 is arranged between the front mold frame 100 and the front mold 300, when the molds are opened and closed, in the process that the front mold frame 100 and the front mold 300 are separated or closed, the front mold frame 100 pulls the first core pulling column 322 to reciprocate along the first embedded groove 321 through the first traction mechanism 700, so that the first inclined column groove 320 is driven to be far away from or close to the cavity 310, and the motion is stable.

Further, referring to fig. 1-9, the first pulling mechanism 700 includes a first pulling block 710 and a first moving block 720. One end of the front mold 300 close to the front mold frame 100 is provided with a first mounting groove 340 communicated with the first insertion groove 321, the first moving block 720 is slidably connected to the first mounting groove 340 and has the same moving direction as the first plunger rod 322, and the first moving block 720 is fixedly connected to the second end of the first plunger rod 322 through a screw. The first traction block 710 is fixedly installed at one end, close to the front mold 300, of the front mold frame 100 through screws, the first traction block 710 is connected with the first moving block 720, when the mold is opened and closed, the front mold frame 100 and the front mold 300 are separated or closed, the front mold frame 100 pulls the first moving block 710 to reciprocate through the first traction block 720 to drive the first extraction column 322 to move along the first embedded groove 321 to reciprocate, so that the first inclined column groove 320 is driven to be far away from or close to the cavity 310, and the motion is stable.

Further, referring to fig. 1 to 9, a first pulling portion 721 is disposed at one end of the first moving block 720 close to the first pulling block 710, and the first pulling portion 721 is perpendicular to a moving direction of the first moving block 720. The first traction block 710 is provided with a first traction groove 711, and the first traction groove 711 is adapted to be slidably connected to the first traction part 721. Specifically, the first traction part 721 and the first traction groove 711 have a T-shaped cross section. When the mold is opened, the front mold frame 100 and the front mold 300 are separated, the front mold frame 100 drives the first traction block 710 to move forward, the first traction block 710 is connected with the first traction part 721 through the first traction groove 711 in a matching manner to drive the first moving block 720 to move outwards, and the first moving block 720 drives the first inclined column groove 320 to be far away from the cavity 310 through the first core rod 322, so that the front shell 600 is demolded. During the compound die, preceding die carrier 100 with front mould 300 draws close, preceding die carrier 100 drives first traction block 710 and moves backward, and first traction block 710 is connected through first traction groove 711 and the cooperation of first traction part 721 and drives first movable block 720 and move to the inboard, and first movable block 720 drives first batter post groove 320 through first extraction column 322 and presses close to die cavity 310 makes preparation for preceding shell 600 injection moulding.

Further, referring to fig. 1 to 9, two opposite sidewalls of the first installation groove 340 are provided with first guide grooves 341, and the first guide grooves 341 are parallel to the moving direction of the first plunger rod 322. The first guide blocks 722 are disposed on two opposite sidewalls of the first moving block 720, and the two first guide blocks 722 are slidably connected to the two first guide grooves 341, respectively, so that the first moving block 720 is stably slidably connected to the first mounting groove 340, and the first moving block is stable in movement and simple in structure.

Further, referring to fig. 1 to 9, first embedding blocks 342 are embedded in two opposite side walls of the first installation groove 340, the first embedding blocks 342 are fixedly installed in the first installation groove 340 through screws, the two first guide grooves 341 are respectively formed in the side walls of the two first embedding blocks 342, which are close to each other, and the structure of the insert is adopted, so that the first guide grooves 341 can be conveniently processed, and the processing difficulty is reduced.

In another embodiment of the present invention, referring to fig. 1 to 9, the structural form of the first inclined pillar end 330 disposed on the front mold 300 is substantially the same as the structural form of the first inclined pillar groove 320 disposed on the front mold 300, and the movement principle of the first inclined pillar end 330 is the same as the movement principle of the first inclined pillar groove 320, so that the structural form and the movement principle of the first inclined pillar end 330 are not repeated herein in this embodiment.

In another embodiment of the present invention, referring to fig. 1 to 9, the rear mold 400 is slidably connected to the rear mold frame 200, that is, the rear mold 400 is slidably connected to the guide post of the rear mold frame 200. The rear die 400 is provided with a second mounting groove 450 beside each core 410, the core-pulling block 430 is slidably connected to the second mounting groove 450, and the moving direction of the core-pulling block 430 is perpendicular to the die opening and closing direction. The core-pulling block 430 is obliquely provided with a second insertion groove 441 in a penetrating manner, the second insertion groove 441 is obliquely arranged along the direction of the opening and closing die, the second insertion groove 441 is connected with a second core-pulling column 442 in a sliding manner, the first end of the second core-pulling column 442 is close to the core 410, and the second inclined column groove 440 is arranged at the first end of the second core-pulling column 442. A second traction mechanism 800 is arranged between the front mold 300 and the rear mold 400, when the molds are opened and closed, in the process that the front mold 300 and the rear mold 400 are separated or closed, the front mold 300 pulls the second core-pulling column 442 and the core-pulling block 430 to be sequentially far away from or close to the mold core 410 through the second traction mechanism 800, so that the second inclined column groove 440 and the molding groove 431 are driven to be sequentially far away from or close to the mold core 410, and the movement is stable.

Further, referring to fig. 1 to 9, the second traction mechanism 800 includes a second traction block 810 and a second moving block 820. The second moving block 820 is slidably connected to the second mounting groove 450, a linkage groove 432 is formed in one end, close to the second moving block 820, of the core block 430, a linkage block 821 is formed in one end, close to the linkage groove 432, of the second moving block 820, the linkage block 821 extends into the linkage groove 432 and has a movable gap with the linkage groove 432, and the second end of the second core rod 442 is movably connected to the second moving block 820. The second traction block 810 is fixedly installed at one end, close to the rear die 400, of the front die 300 through screws, the second traction block 810 is connected with the second moving block 820, when the dies are opened and closed, in the process that the front die 300 and the rear die 400 are separated or closed, the front die 300 pulls the second moving block 820 to reciprocate through the second traction block 810 to drive the second core pulling rod 442 and the core pulling block 430 to be sequentially far away from or close to the core 410, so that the second inclined column groove 440 and the forming groove 431 are driven to be sequentially far away from or close to the core 410, and the motion is stable.

Referring to fig. 1 to 9, a second end of the second plunger rod 442 and the second moving block 820 are respectively provided with a third traction groove or a third traction block in sliding connection, and the third traction groove is perpendicular to the moving direction of the second plunger rod 442. Specifically, the cross sections of the third traction groove and the third traction block are T-shaped.

Specifically, referring to fig. 1 to 9, when the mold is opened, the second pulling block 810 pulls the second moving block 820 to move outward, and due to a movable gap between the linkage block 821 and the linkage groove 432, the second moving block 820 firstly drives the second core pulling rod 442 to be away from the mold core 410, and until the linkage block 821 abuts against the side wall of the linkage groove 432, the second core pulling rod 442 and the core pulling rod 430 are started to move together to be away from the mold core 410, so that the sound outlet pipe 610 and the clamping ring 620 of the earphone front shell 600 are firstly demolded, and then the earphone front shell 600 is demolded, so that a mold clamping does not occur, and smooth demolding is realized. Meanwhile, during mold closing, the second traction block 810 pulls the second moving block 820 to move inwards, the second core-pulling rod 442 is driven to be close to the mold core 410 first, and the core-pulling block 430 and the second core-pulling rod 442 are driven to move together to be far away from the mold core 410 only when the linkage block 821 is abutted to the other side wall of the linkage groove 432, so that the movement is performed orderly.

Further, referring to fig. 1 to 9, a second traction groove 821 is disposed at an end of the second moving block 820 close to the second traction block 810, and the second traction groove 821 and the moving direction of the second moving block 820 are obliquely disposed. The second traction block 810 is provided with a second traction part 812, and the second traction part 812 is adapted to be slidably connected to the second traction groove 821. Specifically, the cross-sections of the second traction groove 821 and the second traction part 812 are T-shaped. When the mold is opened, the front mold 300 and the rear mold 400 are separated, the front mold 300 drives the second traction block 810 to move forward, the second traction block 810 is connected with the second traction groove 821 through the second traction part 812 in a matching manner to drive the second moving block 820 to move outwards, and the second moving block 820 drives the second inclined column groove 440 and the forming groove 431 to be away from the mold core 410 sequentially, so that the front shell 600 is demolded. During die assembly, the front die 300 and the rear die 400 are closed, the front die 300 drives the second traction block 810 to move backwards, the second traction block 810 is connected with the second traction groove 821 through the second traction part 812 in a matched mode to drive the second movable block 820 to move inwards, and the second movable block 820 drives the second inclined column groove 440 and the forming groove 431 to be close to the die core 410 successively to prepare for front shell injection molding.

Further, referring to fig. 1 to 9, two opposite side walls of the second mounting groove 450 are respectively provided with a second guide groove 451, the second guide groove 451 is perpendicular to the direction of opening and closing the mold, two opposite sides of the core pulling block 430 and the second moving block 820 are respectively provided with a second guide block 438 in a protruding manner, and the two second guide blocks 438 on the core pulling block 430 and the second moving block 820 are respectively connected to the two second guide grooves 451 in a sliding manner, so that the core pulling block 430 and the second moving block 820 are stably connected to the second mounting groove 450 in a sliding manner, and the structure is stable and simple.

In another embodiment of the present invention, referring to fig. 1 to 9, the structural form of the second inclined pillar end 420 disposed on the rear mold 400 is substantially the same as the structural form of the first inclined pillar groove 320 disposed on the front mold 300, and the movement principle of the second inclined pillar end 420 is the same as the movement principle of the first inclined pillar groove 320, so that the structural form and the movement principle of the second inclined pillar end 420 are not repeated herein in this embodiment.

In another embodiment of the present invention, referring to fig. 1-9, the rear mold frame 200 is movably connected to a push plate 210, the push plate 210 is connected to a power source of the injection molding machine, the ejector pin mechanism 500 includes a plurality of ejector pins, one end of the ejector pin is fixedly connected to the push plate 210, the other end of the ejector pin movably passes through the rear mold frame 200 and the rear mold 400 and can stretch out and draw back to the front shell molding cavity of the earphone, when the ejector pin extends out of the front shell molding cavity of the earphone, the front shell 600 of the front shell molding cavity of the earphone is cooled and molded is ejected, so as to realize the demolding. Wherein, the power source of the injection molding machine drives the pushing plate 210 to reciprocate, thereby driving the thimble to make telescopic motion.

The rest of this embodiment is the same as the first embodiment, and the unexplained features in this embodiment are explained by the first embodiment, which is not described herein again.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of the ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, its framework form can be nimble changeable, can derive series of products. But merely as a matter of simple deductions or substitutions, should be considered as belonging to the scope of patent protection of the present invention as determined by the claims submitted.

Claims (10)

1. An earphone shell injection mold is characterized by comprising a front mold frame, a rear mold frame, a front mold, a rear mold and a thimble mechanism; the front die is arranged on the front die frame, the rear die is arranged on the rear die frame, and one ends, close to each other, of the front die and the rear die are respectively provided with a plurality of cavities and cores which are arranged in a one-to-one correspondence manner; the front die is obliquely embedded with a first inclined column groove and a first inclined column end at the bottom of each cavity, and the rear die is obliquely embedded with a second inclined column end at the top of each core; the rear die is connected with a core-pulling block at the side of each core in a sliding manner, the core-pulling block can be close to or far away from the core, a forming groove is formed in the side wall, close to the core, of the core, and a second inclined column groove is embedded in the top of the forming groove; when the die is closed, a forming cavity of the front shell of the earphone is formed among the die cavity, the core, the first inclined column groove, the first inclined column end, the forming groove, the second inclined column groove and the second inclined column end; the first inclined column groove and the second inclined column groove are oppositely arranged and can be close to or far away from each other, and the first inclined column groove and the second inclined column groove are used for forming a sound outlet pipe and a clamping ring of the front shell; the first oblique column end and the second oblique column end are oppositely arranged and can be close to or far away from each other, and the first oblique column end and the second oblique column end are used for forming an inner hole of the sound outlet pipe; the front end of the front mould frame is provided with a pouring gate, a flow channel communicated with the pouring gate and the earphone front shell forming cavity is arranged in the front mould, and the ejector pin mechanism is used for ejecting a front shell formed in the earphone front shell forming cavity.

2. The earphone shell injection mold of claim 1, wherein: the front die is connected with the front die frame in a sliding manner; the front die is obliquely provided with a plurality of first embedded grooves in a penetrating manner, the first embedded grooves are obliquely arranged in the direction of the die opening and closing, and each first embedded groove is communicated with one die cavity; the first embedded groove is connected with a first core pulling column in a sliding mode, the first end of the first core pulling column is close to the cavity, and the first inclined column groove is formed in the first end of the first core pulling column; and a first traction mechanism is arranged between the front mould frame and the front mould, and when the mould is opened and closed, the first traction mechanism is used for drawing the first core pulling column to reciprocate along the first embedded groove, so that the first inclined column groove is driven to be far away from or close to the cavity.

3. The earphone shell injection mold of claim 2, wherein: the first traction mechanism comprises a first traction block and a first moving block; a first mounting groove communicated with the first embedded groove is formed in one end, close to the front mold frame, of the front mold, the first moving block is connected to the first mounting groove in a sliding mode and is consistent with the moving direction of the first core-pulling column in the moving direction, and the first moving block is fixedly connected with the second end of the first core-pulling column; the first traction block is fixedly installed at one end, close to the front mold, of the front mold base and connected with the first moving block, and when the mold is opened and closed, the first traction block pulls the first moving block to move in a reciprocating mode, so that the first inclined column groove is driven to be far away from or close to the cavity.

4. The earphone shell injection mold of claim 3, wherein: one end of the first moving block, which is close to the first traction block, is provided with a first traction part, and the first traction part is vertical to the moving direction of the first moving block; the first traction block is provided with a first traction groove, and the first traction part is matched and slidably connected with the first traction groove.

5. The earphone shell injection mold of claim 3, wherein: two opposite side walls of the first mounting groove are provided with first guide grooves, and the first guide grooves are parallel to the moving direction of the first core-pulling column; the two opposite side walls of the first moving block are respectively provided with a first guide block, and the two first guide blocks are respectively connected with the two first guide grooves in a sliding manner.

6. The earphone shell injection mold of claim 5, wherein: the two opposite side walls of the first mounting groove are respectively provided with a first embedding block in an embedded mode, and the two first guide grooves are respectively formed in the two side walls, close to each other, of the first embedding blocks.

7. The injection mold for earphone shells according to any of claims 1-6, wherein: the rear die is provided with a second mounting groove beside each core, and the core-pulling block is connected to the second mounting groove in a sliding manner; the core-pulling block is obliquely provided with a second embedded groove in a penetrating manner, the second embedded groove is obliquely arranged in the direction of opening and closing the die, the second embedded groove is connected with a second core-pulling column in a sliding manner, the first end of the second core-pulling column is close to the die core, and the second inclined column groove is formed in the first end of the second core-pulling column; and a second traction mechanism is arranged between the front die and the rear die, and is used for drawing the second core-pulling column and the core-pulling block to be away from or close to the core successively when the dies are opened and closed.

8. The earphone shell injection mold of claim 7, wherein: the second traction mechanism comprises a second traction block and a second moving block; the second moving block is connected to the second mounting groove in a sliding mode, a linkage groove is formed in one end, close to the second moving block, of the core pulling block, a linkage block is arranged at one end, close to the linkage groove, of the second moving block, the linkage block extends into the linkage groove, a movable gap is formed between the linkage block and the linkage groove, and the second end of the second core pulling rod is movably connected to the second moving block; the second traction block is fixedly installed at one end, close to the rear die, of the front die and connected with the second moving block, and when the dies are opened and closed, the second traction block pulls the second moving block to move in a reciprocating mode, so that the second core-pulling column and the core-pulling block are driven to be sequentially far away from or close to the mold core.

9. The earphone shell injection mold of claim 8, wherein: one end of the second moving block, which is close to the second traction block, is provided with a second traction groove, and the second traction groove and the moving direction of the second moving block are obliquely arranged; the second traction block is provided with a second traction part, and the second traction part is matched and slidably connected with the second traction groove.

10. The earphone shell injection mold of claim 8, wherein: two opposite side walls of the second mounting groove are provided with second guide grooves which are vertical to the direction of the opening and closing die, two opposite sides of the core pulling block and the second moving block are provided with second guide blocks in a protruding mode, and the two second guide blocks on the core pulling block and the second moving block are connected to the two second guide grooves in a sliding mode respectively.

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