Spraying-free structure of charging box upper cover mold

Abstract

The utility model discloses a spraying-free structure of an upper cover mold of a charging box. The spraying-free structure comprises a base; fixing the mold; a moving mold; the inner mold is arranged between the fixed mold and the movable mold; the ejector rods are arranged on the base and are used for driving the movable mold to open the mold; a glue feeding mechanism; a push plate assembly; when the ejector rod drives the movable mold to be opened relative to the fixed mold, the pushing and pressing plate assembly pushes and abuts against the inner mold and enables the charging box shell to be separated from the movable mold so as to prevent the charging box shell from being stuck to the mold. According to the utility model, the inner mold is arranged between the movable mold and the fixed mold, and the inner mold is driven by the pushing and pressing plate assembly to press the charging box shell, so that the defect that the charging box shell is stuck to the mold and is left on the movable mold during mold opening to cause a glue opening mark is effectively avoided, and the appearance qualification rate of products is ensured; and the charging box shell can be ejected out of the movable mold after injection molding, so that the working efficiency of molding is effectively improved, and the mold is suitable for being popularized and applied to various earphone charging box molding equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to a forming die technical field, especially a spray -free structure of charging box upper cover mould. BACKGROUND

[0002] Wireless Bluetooth earphone is the electronic product that consumer often uses currently. Wireless Bluetooth earphone can get rid of the bondage of wire compared to wired earphone, and is very convenient to use. Wireless Bluetooth earphone adopts Bluetooth technology and electronic equipment communication connection, realizes the transmission of audio. Earphone charging box is the injection molding of the accessory of wireless earphone charging, also called injection molding, it is a kind of injection molding method. The advantages of injection molding method are fast production speed, high efficiency, operation can realize automation, various colors and varieties, shape can be from simple to complex, size can be from large to small, and product size is accurate, product is easy to update, can form the workpiece of complex shape, injection molding is suitable for mass production and the forming processing domain of complex shape product. At a certain temperature, the completely molten plastic material is stirred by screw, is injected into the mold cavity under high pressure, and the shaped product is obtained after cooling and solidification. The method is suitable for batch production of complex parts and is one of the important processing methods.

[0003] At present, there is a kind of double-color forming die for Bluetooth earphone charging box shell on the market, which can quickly injection molding, which comprises: upper die and lower die, the upper die can move linearly relative to the lower die, the upper die is provided with a hard glue convex block, a soft glue convex block, a first circuit convex group and a second circuit convex group, the first circuit convex group is located around the hard glue convex block, and the second circuit convex group is located around the soft glue convex block, the lower die is provided with a hard glue groove, a soft glue groove, a first circuit groove group and a second circuit groove group, the hard glue groove and the hard glue convex block, the soft glue groove and the soft glue convex block are all matched with reverse clamping, realizing synchronous injection molding of hard glue shell product, and also can mold soft glue on hard glue shell product, meeting the demand of installing charging circuit structure and placing Bluetooth earphone.

[0004] However, this existing charging box shell forming die still has the following shortcomings:

[0005] In the technical scheme, the upper die moves linearly relative to the lower die, and the hard glue convex block is clamped into the hard glue groove, and the first circuit convex group is clamped into the first circuit groove group to realize injection molding of the hard glue shell product, but since the hard glue shell product needs to be cooled and solidified after forming, such mode is prone to produce mouth mark defects due to insufficient cooling time, affecting the appearance of the product, and if the cooling time is too long, it will affect the working efficiency of the forming, and there is inconvenience in use.

[0006] Therefore, the present application provides the following technical scheme. UTILITY MODEL CONTENTS:

[0007] The utility model discloses a purpose at overcoming prior art's insufficient, provide a kind of charging box upper cover mould free spraying structure.

[0008] In order to solve the above technical problems, the utility model adopts the following technical scheme: a kind of charging box upper cover mould free spraying structure, comprising: base;Fixed mould, it is set on the base, and the first profiling positioning groove and the second profiling positioning groove for shaping the charging box shell are formed on the fixed mould;Movable die, it is set on the fixed mould in the way that can be opened and closed, and the first perforation and the second perforation for the glue feeding structure are passed through are set on the movable die;Inner mould, it is set between the fixed mould and movable die;Several top rods, it is set on the base and is used to drive the movable die to open mould;Glue feeding mechanism, it is set above movable die and is used to extrude the charging box shell in the fixed mould;Pushing plate assembly, it is set on the base and is used to push the inner mould;When top rod drives movable die to open mould relative to fixed mould, pushing plate assembly pushes the inner mould and makes charging box shell escape from movable die, to prevent charging box shell from sticking to mould.

[0009] Further, in the above technical solution, the pushing plate assembly includes: a first drive cylinder, a first cylinder rod driven by the first drive cylinder, a first inner mould connecting plate connected to the inner mould and pushed by the first cylinder rod, a second drive cylinder, a second cylinder rod driven by the second drive cylinder, a second inner mould connecting plate connected to the inner mould and pushed by the second cylinder rod, a plurality of push plates installed on the movable die and capable of pushing the inner mould to limit, and a plurality of pressing plates installed on the fixed mould and capable of vertically limiting the inner mould.

[0010] Further, in the above technical solution, the push plate includes a push plate fixing screw, a pusher support plate fixed to the movable die by the push plate fixing screw, a pusher passing through the movable die and pushing against the inner mould, and a pusher spring arranged between the pusher support plate and the pusher and used to push the pusher, and the front end of the pusher is protrudingly formed with a pushing protrusion for pushing the inner mould.

[0011] Further, in the above technical solution, the movable die is provided with a movable die outer seat for preventing foreign matter around the movable die;The fixed mould is provided with a fixed mould outer seat, and the fixed mould outer seat is located on the base;The glue feeding mechanism is provided with a glue feeding outer seat around the glue feeding mechanism;The glue feeding outer seat is further provided with an end cover.

[0012] Further, in the above technical solution, the pressing plate comprises at least four pressing plate fixing screws, at least two pressing sub support plates fixed to the fixed mold through the pressing plate fixing screws, pressing subs fixed through the pressing sub support plates and abutting on the inner mold, a synchronous pressing rod provided on the outer seat of the movable mold, and a pressing block driven by the synchronous pressing rod and abutting on the pressing sub. The pressing sub is protruded to form a buckling part for buckling on the inner mold.

[0013] Further, in the above technical solution, the glue feeding mechanism comprises a glue feeding box for placing glue, a first glue feeding needle valve connected to the glue feeding box and used for feeding glue into the fixed mold, a second glue feeding needle valve connected to the glue feeding box and used for feeding glue into the fixed mold, and a glue feeding driving member arranged on the glue feeding box and used for driving glue to be ejected.

[0014] Further, in the above technical solution, the movable mold is formed with an inner mold avoiding groove for matching with the inner mold. A plurality of push plate mounting holes for mounting the push plate are arranged on the movable mold and communicate with the inner mold avoiding groove. A first needle valve groove for matching with the first glue feeding needle valve of the glue feeding mechanism is arranged on the movable mold, and a first through hole for the glue feeding mechanism to pass through is arranged in the first needle valve groove. A second needle valve groove for matching with the second glue feeding needle valve of the glue feeding mechanism is also arranged on the movable mold, and a second through hole for the glue feeding mechanism to pass through is arranged in the second needle valve groove.

[0015] Further, in the above technical solution, the lower end of the movable mold is protruded to form a first profiling convex part for matching with the first profiling positioning groove and cooperating with the extruded charging box shell. The lower end of the movable mold is also protruded to form a second profiling convex part for matching with the second profiling positioning groove and cooperating with the extruded charging box shell. A plurality of positioning convex parts for cooperating with the fixed mold are arranged on the movable mold. Correspondingly, a plurality of positioning avoiding grooves for cooperating with the positioning convex parts are arranged on the fixed mold.

[0016] Further, in the above technical solution, the inner mold is provided with a first inner mold hole for the first profiling convex part to pass through, and is also provided with a second inner mold hole for the second profiling convex part to pass through. A plurality of reverse buckling parts for the buckling part of the pressing sub to abut are arranged on the inner mold. A plurality of push abutting grooves for matching with the push abutting convex part of the push sub are also arranged on the inner mold.

[0017] Compared with the prior art, the utility model has the advantages that: in the utility model, an inner mold is arranged between the movable mold and the fixed mold, and the inner mold is driven by the push plate assembly to press the charging box shell, so that the charging box shell is effectively prevented from sticking to the movable mold and causing glue joint defects when the mold is opened, the appearance qualification rate of the product is ensured, the charging box shell can be ejected from the movable mold after injection molding, the working efficiency of the molding is effectively improved, and the utility model is suitable for popularization and application to various earphone charging box molding equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of the three-dimensional structure of the utility model;

[0019] Figure 2 is a schematic view of the mold opening state of the utility model;

[0020] Figure 3 is Figure 2 is an enlarged schematic view at A;

[0021] Figure 4 is a schematic view of the structure of the push plate assembly and the inner mold in the utility model;

[0022] Figure 5 is a schematic view of the structure of the inner mold in the utility model;

[0023] Figure 6 is a schematic view of the structure of the push plate in the utility model;

[0024] Figure 7 is a schematic view of the structure of the push plate in the utility model;

[0025] Figure 8 is a schematic view of the structure of the glue feeding mechanism in the utility model;

[0026] Figure 9 is a schematic view of the structure of the movable mold in the utility model;

[0027] Figure 10 is a schematic view of the structure of the movable mold in the utility model from another perspective;

[0028] Figure 11 is a schematic view of the structure of the fixed mold in the utility model. DETAILED DESCRIPTION

[0029] The utility model is further described below in combination with specific embodiments and drawings.

[0030] See Figures 1 to 11The utility model discloses a charging box upper cover mould spray -free structure, it includes: base 1, fixed mould 2 sets up on the base 1, and the first profiling positioning groove 21 and the second profiling positioning groove 22 for shaping charging box shell 8 are formed on the fixed mould 2, movable mould 3 sets up on the fixed mould 2 in the openable and closeable mode, inner mould 4 sets up between the fixed mould 2 and movable mould 3, a few top rods 5 set up on the base 1 and are used to drive the movable mould 3 and open the mould, glue feeding mechanism 6 sets up above movable mould 3 and is used to extrude the charging box shell 8 of the fixed mould 2, push plate assembly 7 sets up on the base 1 and is used to push the inner mould 4, when the top rod 5 drives movable mould 3 and opens the mould relative to the fixed mould 2, push plate assembly 7 pushes the inner mould 4 and makes charging box shell 8 and comes out in movable mould 3 to prevent charging box shell 8 and stick to the mould.

[0031] In the utility model, through setting up one inner mould 4 between movable mould 3 and fixed mould 2, and through push plate assembly 7 drive inner mould 4 and press charging box shell 8, effectively avoid charging box shell 8 and stick to the mould and appear glue port mark defect when opening the mould, guarantee the appearance qualified rate of product, still can eject charging box shell 8 from movable mould 3 after injection moulding, effectively improve the working efficiency of forming, be suitable for promoting application to various earphone charging box forming equipment.

[0032] The push plate assembly 7 includes: a first drive cylinder 71, a first cylinder rod 72 driven by the first drive cylinder 71, a first inner mold connecting plate 73 connected to the inner mold 4 and pushed by the first cylinder rod 72, a second drive cylinder 74, a second cylinder rod 75 driven by the second drive cylinder 74, a second inner mold connecting plate 76 connected to the inner mold 4 and pushed by the second cylinder rod 75, a plurality of push plates 77 installed on the movable mold 3 and capable of pushing the inner mold 4 to limit, and a plurality of pressure plates 78 installed on the fixed mold 2 and capable of pressing the inner mold 4 to limit vertically. Here, the push plates 77 and the pressure plates 78 jointly act on the inner mold 4 to drive the inner mold 4 to press the charging box shell 8, effectively avoiding the charging box shell 8 from sticking to the mold and appearing glue port mark defects when opening the mold, ensuring the appearance of the product.

[0033] The pressure plate 78 includes at least four pressure plate fixing screws 781, at least two pressure support plates 782 fixed to the fixed mold 2 by the pressure plate fixing screws 781, a pressure piece 783 fixed by the pressure support plate 782 and abutting against the inner mold 4, a synchronous pressure rod 784 passing through the moving mold outer seat 301, and a pressure block 785 driven by the synchronous pressure rod 784 and pressing against the pressure piece 783. The pressure piece 783 has a protruding fastening part 786 for fastening against the inner mold 4. Here, when the whole machine closes the mold, the moving mold outer seat 301 and the moving mold 3 move downward, driving the synchronous pressure rod 784 and the pressure block 785 to descend. Furthermore, the pressure block 785 presses against the pressure piece 783, so that the fastening part 786 of the pressure piece 783 abuts against the inner mold 4, thereby confining the charging box shell 8 in the fixed mold 2 to facilitate ABS overmolding.

[0034] The push plate 77 includes a push plate fixing screw 771, a pusher support plate 772 fixed to the moving mold 3 by the push plate fixing screw 771, a pusher 773 passing through the moving mold 3 and pushing against the inner mold 4, and a pusher spring 774 disposed between the pusher support plate 772 and the pusher 773 for pushing the pusher 773. The front end of the pusher 773 has a pushing protrusion 775 for pushing against the inner mold 4. Here, after the injection molding mechanism completes the ABS overmolding, the whole machine opens the mold, the moving mold 3 moves upward and drives the push plate 77 to move upward. At this time, the pusher 773 is squeezed and pushes the pusher spring 774 to contract, so that the push plate 77 loses its vertical limiting effect on the inner mold 4. Furthermore, the inner mold 4 comes out downward and drives the charging box shell 8 to detach from the moving mold 3, thereby preventing the charging box shell 8 from sticking to the moving mold 3.

[0035] The moving mold 3 is provided with a moving mold outer seat 301 for preventing foreign objects; the fixed mold 2 is provided with a fixed mold outer seat 201, and the fixed mold outer seat 201 is located on the base 1; the glue injection mechanism 6 is provided with a glue injection outer seat 601; the glue injection outer seat 601 is also covered with an end cap 602.

[0036] The glue injection mechanism 6 includes: a glue injection box 61 for holding the glue, a first glue injection needle valve 62 connected to the glue injection box 61 for dispensing glue into the fixed mold 2, a second glue injection needle valve 63 connected to the glue injection box 61 for dispensing glue into the fixed mold 2, and a glue injection drive member 64 disposed on the glue injection box 61 for driving the glue to be injected. Here, compared with the existing structure, in this utility model, the glue injection mechanism 6 adopts a dual-color needle valve type glue injection with the first glue injection needle valve 62 and the second glue injection needle valve 63, which can perform glue injection simultaneously, effectively improving molding efficiency and shortening the molding cycle.

[0037] Combination Figure 9 andFigure 10 As shown, the moving mold 3 is formed with an inner mold clearance groove 31 for matching with the inner mold 4. The moving mold 3 has several push plate mounting holes 32 for mounting the push plate 77, and the push plate mounting holes 32 are connected to the inner mold clearance groove 31. The moving mold 3 has a first needle valve groove 33 for matching with the first glue injection needle valve 62 of the glue injection mechanism 6, and the first needle valve groove 33 has a first through hole 35 for the glue injection mechanism 6 to pass through. The moving mold 3 also has a second needle valve groove 34 for matching with the second glue injection needle valve 63 of the glue injection mechanism 6, and the second needle valve groove 34 has a second through hole 36 for the glue injection mechanism 6 to pass through.

[0038] The lower end of the moving mold 3 has a first contoured protrusion 37 that matches the first contoured positioning groove 21 and is used to extrude the charging box shell 8. The lower end of the moving mold 3 also has a second contoured protrusion 38 that matches the second contoured positioning groove 22 and is used to extrude the charging box shell 8. The moving mold 3 has several positioning protrusions 39 that are used to cooperate with the fixed mold 2 for positioning. Correspondingly, the fixed mold 2 has several positioning clearance grooves 29 that are used to cooperate with the positioning protrusions 39 for positioning.

[0039] The inner mold 4 has a first inner mold hole 41 for the first contouring protrusion 37 to pass through, and a second inner mold hole 42 for the second contouring protrusion 38 to pass through; the inner mold 4 has several recessed buckles 43 for the buckles 786 of the presser 783 to press against, and the inner mold 4 also has several push grooves 44 for matching the push protrusions 775 of the pusher 773.

[0040] The fixed mold outer base 201 is recessed and formed with a fixed mold receiving groove 202 for accommodating the fixed mold 2. The fixed mold outer base 201 is also formed with a first inner mold connecting plate groove 203 and a second inner mold connecting plate groove 204 for accommodating the first inner mold connecting plate 73 and the second inner mold connecting plate 76, respectively.

[0041] In summary, this invention, by setting an inner mold 4 between the moving mold 3 and the fixed mold 2, and using the push plate assembly 7 to drive the inner mold 4 to press against the charging case shell 8, effectively avoids the charging case shell 8 sticking to the moving mold 3 during mold opening, thus preventing defects such as glue marks. This ensures the product's appearance qualification rate and allows the charging case shell 8 to be ejected from the moving mold 3 after injection molding, effectively improving molding efficiency. It is suitable for widespread application in various headphone charging case molding equipment. Furthermore, compared with existing structures, this invention uses a dual-color needle valve type for the glue injection mechanism 6, employing a first glue injection needle valve 62 and a second glue injection needle valve 63, enabling simultaneous glue injection and effectively improving molding efficiency and shortening the molding cycle.

[0042] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A spray-free structure of a charging box upper cover mold, characterized in that, It comprises: a base (1); a fixed die (2) arranged on the base (1), and a first profiling positioning groove (21) and a second profiling positioning groove (22) are formed on the fixed die (2) for shaping a charging box shell (8); a movable die (3) arranged on the fixed die (2) in an openable and closable manner; an inner die (4) arranged between the fixed die (2) and the movable die (3); a plurality of ejector rods (5) arranged on the base (1) and used to drive the movable die (3) to open; a feeding mechanism (6) arranged above the movable die (3) and used to extrude the charging box shell (8) into the fixed die (2); a push plate assembly (7) arranged on the base (1) and used to push the inner die (4); When the ejector rod (5) drives the movable die (3) to open relative to the fixed die (2), the push plate assembly (7) pushes the inner die (4) and makes the charging box shell (8) come out of the movable die (3), so as to prevent the charging box shell (8) from sticking to the die.

2. The spray-free structure of the upper cover mold of the charging box according to claim 1, characterized in that: The push plate assembly (7) comprises a first driving cylinder (71), a first cylinder rod (72) driven by the first driving cylinder (71), a first inner die connecting plate (73) connected to the inner die (4) and pushed by the first cylinder rod (72), a second driving cylinder (74), a second cylinder rod (75) driven by the second driving cylinder (74), a second inner die connecting plate (76) connected to the inner die (4) and pushed by the second cylinder rod (75), a plurality of push plates (77) mounted on the movable die (3) and capable of limiting the inner die (4), and a plurality of pressing plates (78) mounted on the fixed die (2) and capable of vertically limiting the inner die (4).

3. The spray-free structure of the upper cover mold of the charging box according to claim 2, characterized in that: The movable die (3) is provided with a movable die outer seat (301) for preventing foreign matter; the fixed die (2) is provided with a fixed die outer seat (201) located on the base (1); the feeding mechanism (6) is provided with a feeding outer seat (601); and the feeding outer seat (601) is further provided with an end cover (602).

4. The spray-free structure of the upper cover mold of the charging box according to claim 3, characterized in that: The push plate (77) comprises a push plate fixing screw (771), a pusher support plate (772) fixed to the movable die (3) through the push plate fixing screw (771), a pusher (773) penetrating through the movable die (3) and pushing against the inner die (4), and a pusher spring (774) arranged between the pusher support plate (772) and the pusher (773) and used to push the pusher (773), and a push against protrusion (775) is formed at the front end of the pusher (773) for pushing against the inner die (4).

5. The spray-free structure of the upper cover mold of the charging box according to claim 4, characterized in that: The pressing plate (78) comprises at least four pressing plate fixing screws (781), at least two pressing sub support plates (782) fixed to the fixed mold (2) through the pressing plate fixing screws (781), pressing subs (783) fixed through the pressing sub support plates (782) and abutting against the inner mold (4), a synchronous pressing rod (784) penetrating the movable mold outer seat (301), and a pressing block (785) driven through the synchronous pressing rod (784) and abutting against the pressing sub (783), wherein the pressing sub (783) is protruded and formed with a buckling part (786) for buckling against the inner mold (4).

6. A spray-free structure of a charging box upper cover mold according to any one of claims 1-5, characterized in that: The glue feeding mechanism (6) comprises a glue feeding box (61) for placing glue, a first glue feeding needle valve (62) connected to the glue feeding box (61) and used for feeding glue into the fixed mold (2), a second glue feeding needle valve (63) connected to the glue feeding box (61) and used for feeding glue into the fixed mold (2), and a glue feeding driving member (64) arranged on the glue feeding box (61) and used for driving glue to be ejected.

7. The spray-free structure of the upper cover mold of the charging box according to claim 4, characterized in that: The movable mold (3) is formed with an inner mold avoiding groove (31) for matching the inner mold (4), a plurality of push plate mounting holes (32) are formed on the movable mold (3) for mounting the push plate (77), and the push plate mounting holes (32) are communicated with the inner mold avoiding groove (31); a first needle valve groove (33) is formed on the movable mold (3) for matching the first glue feeding needle valve (62) of the glue feeding mechanism (6), a first through hole (35) is formed in the first needle valve groove (33) for the glue feeding mechanism (6) to pass through, and a second needle valve groove (34) is also formed on the movable mold (3) for matching the second glue feeding needle valve (63) of the glue feeding mechanism (6), and a second through hole (36) is formed in the second needle valve groove (34) for the glue feeding mechanism (6) to pass through.

8. The spray-free structure of the upper cover mold of the charging box according to claim 5, characterized in that: The lower end of the movable mold (3) is protruded and formed with a first profiling convex part (37) matching the first profiling positioning groove (21) and used for cooperating with the extruded charging box shell (8), and the lower end of the movable mold (3) is also protruded and formed with a second profiling convex part (38) matching the second profiling positioning groove (22) and used for cooperating with the extruded charging box shell (8); a plurality of positioning convex parts (39) are protruded and formed on the movable mold (3) for cooperating with the fixed mold (2) to be positioned, and correspondingly, a plurality of positioning avoiding grooves (29) are recessed and formed on the fixed mold (2) for cooperating with the positioning convex parts (39) to be positioned.

9. The spray-free structure of the upper cover mold of the charging box according to claim 8, characterized in that: A first inner mold hole (41) is formed on the inner mold (4) for the first profiling convex part (37) to pass through, and a second inner mold hole (42) is also formed on the inner mold (4) for the second profiling convex part (38) to pass through; a plurality of reverse buckling parts (43) are recessed and formed on the inner mold (4) for the buckling part (786) of the pressing sub (783) to abut against, and a plurality of push abutting grooves (44) are also formed on the inner mold (4) for matching the push abutting convex part (775) of the push sub (773).

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