A forming mold for an acoustic product

Abstract

The utility model relates to the technical field of plastic part acoustic product injection mold, concretely is a kind of acoustic product's forming die, including rear half mould and front half mould, the rear half mould includes bottom plate, B plate and rear mould kernel, the surface of bottom plate is fixedly connected with B plate, and the inside of B plate top end is inlaid with rear mould kernel, the surface of rear mould kernel is installed with two rear mould inserts;The front half mould includes A plate, water gap plate, stripping plate and panel, the inside of A plate bottom end is inlaid with front mould kernel, the surface of water gap plate is installed with front mould insert by screw and is fixedly installed long insert piece on stripping plate and goes into product inside, utilize the stripping plate of front mould to open, to extract insert piece in product, without the ejector pin on traditional ejector pin plate to eject product, can effectively complete mold opening, product action of falling off.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology for plastic audio products, specifically a molding mold for audio products. Background Technology

[0002] Decorative parts for audio products have unique shapes, resembling a round cap cone. No glue injection points or ejector pin marks are allowed on the outer surface. The mold matching machine needs to be small, the mold price needs to be low, and the molding time needs to be short, which makes the mold design quite difficult.

[0003] The current molding die presents the following challenges: First, the injection point is located on the outer surface; second, the molded product cannot be effectively ejected; third, the product has a sharp point, making it difficult to guarantee dimensions and remove chips during EDM machining; finally, traditional molds rely on ejector pins on the ejector plate to eject the product effectively, thus completing mold opening and removing the product. A better design solution is urgently needed to address these challenges. Utility Model Content

[0004] The purpose of this utility model is to provide a molding die for audio products, so as to solve the problems mentioned in the background art, that the injection point of the existing molding die is on the outer surface, which makes it impossible to effectively eject the product, and that the size is difficult to guarantee and the chip removal is difficult.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a molding die for an audio product, comprising a rear half mold and a front half mold. The rear half mold includes a base plate, a B plate, and a rear mold core. The B plate is fixedly attached to the surface of the base plate, and the rear mold core is embedded inside the top of the B plate. Two rear mold inserts are mounted on the surface of the rear mold core. The front half mold includes an A plate, a sprue plate, a stripper plate, and a panel. The front mold core is embedded inside the bottom of the A plate. The front mold insert is mounted on the surface of the sprue plate by screws, and the bottom end of the front mold insert penetrates the A plate and the front mold core. A glue inlet is provided at the bottom end of the front mold insert.

[0006] Preferably, the surfaces of plates A and B are fixed with four sets of pull plates by bolts, which are used for limiting the opening of the rear half mold and the front half mold.

[0007] Preferably, long guide posts are bolted to the four corners of the panel surface, and the bottom ends of the long guide posts pass through the stripper plate, the sprue plate and the A plate in sequence, and guide and limit each other with the four guide sleeves on the B plate when the mold is closed.

[0008] Preferably, the surface of the sprue plate is fixed with a spring and a limiting bolt.

[0009] Preferably, a nozzle and a positioning ring are placed sequentially from bottom to top on the surface of the panel, and the positioning ring is fixed to the panel by bolts. The bottom end of the nozzle extends through the panel into the interior of the stripping plate. A pull rod is installed on the surface of the nozzle, and the bottom end of the pull rod extends into the interior of the stripping plate.

[0010] Preferably, long plug screws are provided at the four corner positions of the sprue plate surface, and the long plug screws are threaded through the sprue plate and the stripper plate. At the same time, when the mold is closed, the bottom end of the long plug screw passes through the stripper plate, the sprue plate and the A plate in sequence and extends into the four guide holes on the B plate.

[0011] Preferably, after the rear half mold and the front half mold are closed, the sprue is connected to the front mold insert, and during injection molding, the sprue material is formed inside the front mold insert and the sprue; four limiting screws are provided between the stripper plate and the panel, which are used for limiting the stripper plate and the panel when they are separated.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, during injection molding, molten rubber is injected from the machine nozzle to the sprue, passes through the stripper plate and the front mold insert, and is formed in the cavity created by the front and rear mold cores. After pressure holding, cooling, and mold opening, the material is guided by four long guide pillars on the panel under the action of springs and the sprue plate being pulled by the opening and closing device. Four limiting plugs on the stripper plate are used for limiting. First, a 130mm gap is opened between the sprue plate and the stripper plate to pull out the sprue material. Then, a 160mm gap is opened between the A and B plates, leaving the product on the front mold insert. The mold continues to open, and under the action of four pulling plates on both sides, the sprue plate and the installed front mold insert are separated from the A plate by 10mm. The cutting edge of the front mold core is used as the tool boundary to peel off the product stuck to the front mold insert. Then, the stripper plate is pulled away from the panel by four long plugs connected to the sprue plate, pulling out the sprue material from the sprue nozzle by 10mm. This invention solves the problem of existing injection points on the outer surface; moreover, by fixing and installing a long insert into the product on the stripper plate, the insert can be pulled out by opening the stripper plate of the front mold, thus effectively completing demolding; at the same time, an insert hole is added to the bottom of the rear mold core for chip removal, ensuring that the dimensional accuracy is achieved; this invention solves the problem of ejector pin marks on the outer surface and product surface by using the front mold insert for injection and eliminating the ejector plate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the three-dimensional mold-closing state structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional mold opening state structure of this utility model;

[0016] Figure 3This is a cross-sectional view of the mold-fitting structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the left-side mold-closing state structure of this utility model;

[0018] Figure 5 This is a cross-sectional view of the structure of the present invention in the mold-opening state;

[0019] Figure 6 For the present utility model Figure 4 Enlarged structural diagram at point "A" in the middle;

[0020] Figure 7 For the present utility model Figure 5 Schematic diagram of the cross-sectional structure at point "B".

[0021] In the diagram: 1. Rear mold half; 11. Base plate; 12. B plate; 13. Rear mold core; 2. Front mold half; 3. A plate; 4. Sprue plate; 41. Limit bolt; 5. Stripper plate; 51. Long plug screw; 52. Limit plug screw; 6. Panel; 61. Positioning ring; 62. Sprue; 63. Pull rod; 64. Long guide post; 7. Front mold core; 8. Pull plate; 9. Front mold insert; 91. Sprue; 92. Glue inlet; 10. Rear mold insert. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. In addition, the terms "first", "second", "third", "upper", "lower", "left", "right", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0023] The structure of a molding die for an audio product provided by this utility model is as follows: Figure 1 , Figure 3 , Figure 6 as well as Figure 7As shown, the system includes a rear mold 1 and a front mold 2 used in conjunction with the rear mold 1. The rear mold 1 includes a base plate 11, a B plate 12, and a rear mold core 13. The surface of the base plate 11 is fixedly connected to the B plate 12, which has four guide holes and guide sleeves. The rear mold core 13 is embedded inside the top of the B plate 12. Two rear mold inserts 10 are installed on the surface of the rear mold core 13. The front mold 2 includes an A plate 3, a sprue plate 4, a stripper plate 5, and a panel 6. The bottom end of the A plate 3 is embedded inside the front mold core 7. The surface of the sprue plate 4 is fitted with a front mold insert 9 by screws. The bottom end of the front mold insert 9 penetrates the A plate 3 and the front mold core 7. The bottom end is provided with a glue injection point 92. At the four corners of the panel 6, long guide pillars 64 are installed by bolts. The bottom ends of the long guide pillars 64 pass through the stripper plate 5, the sprue plate 4 and the A plate 3 in sequence, and guide and limit each other with the four guide sleeves on the B plate 12 when the mold is closed. The surface of the sprue plate 4 is fixed with springs and limit bolts 41. The stripper plate 5 is provided with a circular groove that can accommodate the limit bolts 41, so that the limit bolts 41 can be accommodated when the mold is closed. The surfaces of the A plate 3 and the B plate 12 are fixed with four sets of pull plates 8 by bolts. The pull plates 8 are used for the limiting function when the rear half mold 1 and the front half mold 2 are opened.

[0024] During implementation, the molten rubber material is injected from the machine nozzle to the sprue 62, passes through the stripper plate 5 and the front mold insert 9, and is formed in the cavity of the front mold core 7 and the rear mold core 13. After pressure holding, cooling, and mold opening, the material is opened under the action of the spring and the action of the gate plate 4 being pulled by the opening and closing device.

[0025] Furthermore, such as Figure 2 , Figure 4 as well as Figure 5 As shown, from bottom to top, a nozzle 62 and a positioning ring 61 are placed on the surface of panel 6, and the positioning ring 61 is fixed to panel 6 by bolts. The bottom end of the nozzle 62 extends through panel 6 into the interior of the stripper plate 5. A pull rod 63 is installed on the surface of nozzle 62, and the bottom end of pull rod 63 extends into the interior of stripper plate 5. Long plug screws 51 are provided at the four corners of the surface of sprue plate 4, and the long plug screws 51 penetrate the surface threads of sprue plate 4 and stripper plate 5. During mold closing, the bottom end of the long plug screw 51 passes through the stripper plate 5, the sprue plate 4, and the A plate 3 in sequence and extends into the four guide holes on the B plate 12. After the rear half mold 1 and the front half mold 2 are closed, the nozzle 62 communicates with the front mold insert 9, and during injection molding, sprue material 91 is formed inside the front mold insert 9 and the nozzle 62. Four limiting plug screws 52 are provided between the stripper plate 5 and the panel 6. These limiting plug screws 52 are used for limiting the stripper plate 5 and the panel 6 when they are separated.

[0026] During implementation, guided by four long guide pillars 64 on panel 6, and limited by four limit plug screws 52 on stripper plate 5, sprue plate 4 and stripper plate 5 are first opened by 130 mm to pull out sprue material 91. Then, 160 mm is opened between A plate 3 and B plate 12, leaving the product on the front mold insert 9. The mold continues to open, and under the action of four pulling plates 8 on both sides, sprue plate 4 and the installed front mold insert 9 are separated from A plate 3 to 10 mm. The cutting edge of the front mold core 7 is used as the tool boundary to peel off the product stuck to the front mold insert 9. Then, the stripper plate 5 is pulled away from panel 6 to 10 mm by the four long plug screws 51 connected to sprue plate 4 to pull out sprue material 91 on nozzle 62.

[0027] Traditional molds rely on ejector pins on an ejector plate to eject the product, effectively opening the mold and removing the product. This invention solves the problem of ejector pin marks on the appearance and product surfaces by using a front mold insert for gluing and eliminating the ejector plate.

[0028] Working principle: During injection molding, molten rubber is injected from the nozzle of the machine into the sprue 62, passes through the stripper plate 5, the front mold insert 9, and is formed in the cavity created by the front mold core 7 and the rear mold core 13. Pressure is maintained, cooling occurs, and the mold opens. Under the action of the spring and the pull of the sprue plate 4 by the opening and closing device, it is guided by the four long guide pillars 64 on the panel 6. The four limiting plugs on the stripper plate 5 are limited by screws 52. A 130mm opening is made between the sprue plate 4 and the stripper plate 5 to pull out the sprue material 91. Then, the A plate 3 and the B plate 12... The gap is 160 mm. The product remains on the front mold insert 9. The mold continues to open. Under the action of the four pull plates 8 on both sides, the sprue plate 4 and the installed front mold insert 9 are separated from the A plate by 3 to 10 mm. The cutting edge of the front mold core 7 is used as the tool boundary to peel off the product stuck to the front mold insert 9. Then, the stripper plate 5 is pulled away from the panel by 6 to 10 mm through the four long plug screws 51 connected to the sprue plate 4. The sprue material 91 in the nozzle 62 is pulled out. The robot arm takes out the sprue material 91, and the mold is closed normally. Injection filling is performed, and the next cycle is repeated.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A molding die for an audio product, comprising a rear mold (1) and a front mold (2), characterized in that: The rear half mold (1) includes a base plate (11), a B plate (12) and a rear mold core (13). The B plate (12) is fixedly attached to the surface of the base plate (11), and the rear mold core (13) is embedded inside the top of the B plate (12). Two rear mold inserts (10) are installed on the surface of the rear mold core (13). The front half mold (2) includes an A plate (3), a sprue plate (4), a stripper plate (5) and a panel (6). The front mold core (7) is embedded inside the bottom of the A plate (3). The front mold insert (9) is installed on the surface of the sprue plate (4) by screws. The bottom of the front mold insert (9) penetrates the A plate (3) and the front mold core (7). The bottom of the front mold insert (9) is provided with a glue inlet (92).

2. The molding die for an audio product according to claim 1, characterized in that: The surfaces of the A plate (3) and B plate (12) are fixed with four sets of pull plates (8) by bolts. These pull plates (8) are used for limiting the opening of the rear half mold (1) and the front half mold (2).

3. The molding die for an audio product according to claim 1, characterized in that: At the four corners of the panel (6), long guide pillars (64) are installed by bolts. The bottom ends of the long guide pillars (64) pass through the stripper plate (5), the sprue plate (4) and the A plate (3) in sequence, and guide and limit each other with the four guide sleeves on the B plate (12) when the mold is closed.

4. The molding die for an audio product according to claim 1, characterized in that: The surface of the sprue plate (4) is fixed with a spring and a limiting bolt (41).

5. The molding die for an audio product according to claim 1, characterized in that: The panel (6) has a nozzle (62) and a positioning ring (61) placed sequentially from bottom to top on its surface. The positioning ring (61) is fixed to the panel (6) by bolts. The bottom end of the nozzle (62) extends through the panel (6) into the interior of the stripper plate (5). A pull rod (63) is installed on the surface of the nozzle (62), and the bottom end of the pull rod (63) extends into the interior of the stripper plate (5).

6. The molding die for an audio product according to claim 1, characterized in that: Long plug screws (51) are provided at the four corner positions of the surface of the sprue plate (4), and the long plug screws (51) are threaded through the surface of the sprue plate (4) and the stripper plate (5). At the same time, when the mold is closed, the bottom end of the long plug screws (51) passes through the stripper plate (5), the sprue plate (4) and the A plate (3) in sequence and extends into the four guide holes on the B plate (12).

7. The molding die for an audio product according to claim 1, characterized in that: After the rear half mold (1) and the front half mold (2) are closed, the nozzle (62) communicates with the front mold insert (9), and during injection molding, sprue material (91) is formed inside the front mold insert (9) and the nozzle (62); four limiting screws (52) are provided between the stripper plate (5) and the panel (6), and the limiting screws (52) are used for limiting the stripper plate (5) and the panel (6) when they are separated.

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