IP set top box upper shell slide inverted mold needle valve hot runner mold structure

Abstract

The utility model relates to the technical field of IP set top box production, in particular to an IP set top box upper shell slide inverted mold needle valve hot runner mold structure which comprises a splitter plate installed in a mold, discharging pipes communicated with the interior of the splitter plate are arranged at the two ends of the bottom face of the splitter plate, air cylinders are fixedly connected to the positions, corresponding to the discharging pipes, of the top face of the splitter plate, and the top face of the splitter plate is provided with an air cylinder. The output end of the air cylinder penetrates through the inner top face of the splitter plate and is fixedly connected with a valve needle. According to the device, the movable ring is driven by the valve needle to move downwards, the arc-shaped shells can be opened, so that the discharging opening of the discharging pipe can be opened, molten plastic can be conveniently injected into a mold cavity, the valve needle does not need to be in direct contact with the arc-shaped shells, and even if abrasion exists between the movable ring and the arc-shaped shells, the arc-shaped shells can be opened. However, sealing of the multiple arc-shaped shells to the discharging pipe 2 is not affected, and opening of the multiple arc-shaped shells by the moving ring which is abraded in the later period is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to IP set top box production technical field, specifically a kind of IP set top box upper shell row position flip-over mould needle valve hot runner mould structure. BACKGROUND

[0002] IP set top box, also known as network set top box or set top box, is a kind of equipment receiving and decoding video content through internet protocol network, it allows user to watch television program, movie and other video content through internet connection, without traditional cable television or satellite television subscription, the box body of IP set top box needs row position flip-over mould needle valve hot runner mould in production process.

[0003] The existing row position flip-over mould needle valve hot runner mould is usually first filled with molten plastic into hot runner when using, then the flow of plastic material is controlled by using needle valve, so as to improve the efficiency and product quality of injection molding process, but the valve needle of needle valve is rubbed with the inner wall of hot runner when controlling the opening and closing of hot runner, the valve needle becomes thinner and thinner, so that the valve needle cannot completely block the discharge port of hot runner, so that molten plastic flows under the action of its own gravity. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of IP set top box upper shell row position flip-over mould needle valve hot runner mould structure to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of IP set top box upper shell row position flip-over mould needle valve hot runner mould structure, including the shunt plate being installed in mould, the bottom surface both ends of the shunt plate are provided with the blanking tube being communicated with shunt plate interior, the top surface of the shunt plate is fixedly connected with the air cylinder corresponding blanking tube, the output end of the air cylinder penetrates the inner top surface of shunt plate and is fixedly connected with valve needle, the bottom end of the valve needle is provided with moving ring, the outer wall bottom end of the blanking tube is provided with discharge mechanism, the top surface of the shunt plate is fixedly connected with the electric push rod being fixed with upper die fixed plate, the top surface middle part of the shunt plate is fixedly connected with the feed hopper being slid with upper die fixed plate penetration, the feed hopper is communicated with the interior of shunt plate, the discharge mechanism includes multiple arc shells being annularly equiangularly distributed, multiple the arc shell is closed and presents circular truncated cone structure.

[0007] Further, a plurality of groups of fixed blocks are fixedly arranged on the outer wall of the blanking tube in an annular and equiangular manner, each group of fixed blocks is symmetrically arranged, an L-shaped plate is fixedly connected to the outer wall of the arc shell, and a connecting block is rotatably arranged between the two fixed blocks at the corresponding position and fixedly connected to the top end of the L-shaped plate.

[0008] Further in: one side of the connecting block is fixedly connected with a rotating shaft which penetrates the fixed block at the corresponding position, the outer wall of the rotating shaft is fixedly connected with a worm gear, the outer wall of the blanking pipe is annularly and equiangularly fixed with a plurality of L-shaped blocks, the inner side of the L-shaped block is rotatably connected with a worm which penetrates the blanking pipe and is engaged with the worm gear at the corresponding position.

[0009] Further in: the outer wall of the worm inside the blanking pipe is fixedly connected with a gear, a plurality of connecting rods are annularly and equiangularly fixed between the inner wall of the moving ring and the valve needle, a plurality of vertical plates are annularly and equiangularly fixed on the bottom surface of the moving ring, and the bottom end of the vertical plate is fixedly connected with a rack which is engaged with the gear at the corresponding position.

[0010] Preferably, the top surface of the moving ring is provided with a chamfer at the inner diameter edge.

[0011] Preferably, the outer diameter of the moving ring is the same as the inner diameter of the blanking pipe.

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

[0013] The device can open a plurality of arc-shaped shells by driving the moving ring to move downward with the valve needle, so as to open the discharge port of the blanking pipe, so that the molten plastic can be injected into the mold cavity, the valve needle does not need to be directly in contact with the plurality of arc-shaped shells, and the wear between the moving ring and the arc-shaped shell is instantaneously, but the sealing of the plurality of arc-shaped shells on the blanking pipe 2 is not affected, and the moving ring after the later wear also does not affect the opening of the plurality of arc-shaped shells. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure schematic diagram of the utility model;

[0015] Figure 2 It is the enlarged view of A in the utility model;

[0016] Figure 3 It is the hot runner schematic diagram in the utility model;

[0017] Figure 4 It is the enlarged view of B in the utility model;

[0018] Figure 5 It is the discharge mechanism structure schematic diagram in the utility model;

[0019] Figure 6 It is the enlarged view of C in the utility model;

[0020] Figure 7 It is the valve needle schematic diagram in the utility model;

[0021] Figure 8 It is the enlarged view of D in the utility model.

[0022] Figure: 1, the shunt plate; 2, blanking tube; 21, fixed block; 22, L-shaped block; 3, air cylinder; 31, valve needle; 32, moving ring; 33, connecting rod; 34, vertical plate; 35, rack; 4, discharge mechanism; 41, arc shell; 42, L-shaped plate; 43, connecting block; 44, worm; 45, worm; 46, gear; 5, electric push rod; 6, feed hopper. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Please refer to Figures 1-8 In the embodiments of the present application, an IP set top box upper shell row position inverted mold needle valve hot runner mold structure includes a shunt plate 1 installed in the mold, the bottom surface of the shunt plate 1 is provided with a blanking tube 2 communicating with the inside of the shunt plate 1 at both ends, the top surface of the shunt plate 1 is fixedly connected with an air cylinder 3 corresponding to the blanking tube 2, the output end of the air cylinder 3 penetrates the inner top surface of the shunt plate 1 and is fixedly connected with a valve needle 31, the bottom end of the valve needle 31 is provided with a moving ring 32, the outer wall bottom end of the blanking tube 2 is provided with a discharge mechanism 4, the top surface of the shunt plate 1 is fixedly connected with an electric push rod 5 fixed with an upper mold fixed plate, the top surface of the shunt plate 1 is fixedly connected with a feed hopper 6 slidingly penetrating the upper mold fixed plate, the feed hopper 6 communicates with the inside of the shunt plate 1, the discharge mechanism 4 includes a plurality of annular equiangularly distributed arc shells 41, and the plurality of arc shells 41 are folded to form a circular truncated cone structure.

[0025] Specifically, first, the flow distribution plate 1 is installed between the upper mold and the fixed plate of the upper mold, and the two electric push rods 5 are fixed with the fixed plate of the upper mold, and at the same time, the two discharge pipes 2 are aligned with the injection holes of the upper mold (the injection holes are structures similar to suction cups, and the minimum diameter of the injection holes is greater than the minimum diameter of the folded multiple arc-shaped shells 41), then the molten plastic is injected into the flow distribution plate 1 through the feeding mechanism outside the feeding hopper 6, because the inside of the flow distribution plate 1 is communicated with the inside of the two discharge pipes 2, so the molten plastic injected into the flow distribution plate 1 is quickly pressed into the two discharge pipes 2 under the condition of increasing pressure in the inside of the flow distribution plate 1, then the starting of the two air cylinders 3 can make the two valve needles 31 respectively open the multiple arc-shaped shells 41 at the corresponding positions, and the starting of the two electric push rods 5 can make the flow distribution plate 1 drive the two discharge pipes 2 to move downward, so that the bottom end of the discharge pipe 2 is inserted into the injection hole, and the molten plastic pressed into the discharge pipe 2 is injected into the mold cavity between the upper mold and the lower mold under the pressure applied by the external feeding mechanism, and after the injection of the molten plastic is completed, the feeding is stopped, then the two discharge pipes 2 are moved upward through the two electric push rods 5 again, and the two valve needles 31 are moved upward through the two air cylinders 3, the upward movement of the valve needle 31 makes the multiple arc-shaped shells 41 at the corresponding positions fold, and then the two discharge pipes 2 are moved upward through the two electric push rods 5, so that the folded multiple arc-shaped shells 41 at the corresponding positions of the two discharge pipes 2 plug the injection hole on the upper mold, thereby preventing the molten plastic in the mold cavity from being squeezed out when the upper mold and the lower mold are used to make the set top box shell, and the downward movement of the moving ring 32 driven by the valve needle 31 can open the multiple arc-shaped shells 41, so that the discharge port of the discharge pipe 2 is opened, thereby facilitating the injection of the molten plastic into the mold cavity, and the valve needle 31 does not need to be in direct contact with the multiple arc-shaped shells 41, even if there is wear between the moving ring 32 and the arc-shaped shell 41, but it still does not affect the sealing of the multiple arc-shaped shells 41 to the discharge pipe 2, and it also does not affect the opening of the multiple arc-shaped shells 41 by the moving ring 32 after the wear.

[0026] Embodiment one

[0027] As shown in Figure 5 and Figure 6 , in this embodiment, the outer wall of the discharge pipe 2 is annularly and equiangularly fixed with multiple groups of fixed blocks 21, each group of fixed blocks 21 is symmetrical, the outer wall of the arc-shaped shell 41 is fixedly connected with an L-shaped plate 42, the top end of the L-shaped plate 42 is fixedly connected with a connecting block 43 rotating between the two fixed blocks 21 at the corresponding positions, one side surface of the connecting block 43 is fixedly connected with a rotating shaft penetrating and rotating with the fixed block 21 at the corresponding position, the outer wall of the rotating shaft is fixedly connected with a worm gear 44, the outer wall of the discharge pipe 2 is annularly and equiangularly fixed with multiple L-shaped blocks 22, the inner side surface of the L-shaped block 22 is rotatably connected with a worm 45 penetrating and rotating with the discharge pipe 2 and engaging with the worm gear 44 at the corresponding position.

[0028] In the embodiment, the worm 45 rotates to rotate the worm gear 44 at the corresponding position, and the worm gear 44 rotates the connecting block 43 at the corresponding position to drive the arc-shaped shell 41 at the corresponding position to rotate along the axis of the worm gear 44 at the corresponding position, so that the arc-shaped shells 41 can be opened simultaneously, and the molten plastic can be injected into the mold cavity.

[0029] Embodiment two

[0030] As shown in Figure 7 and Figure 8 In the embodiment, the worm 45 is fixedly connected with the gear 46 on the outer wall, the bottom end of the valve needle 31 is provided with the moving ring 32, a plurality of connecting rods 33 are fixedly arranged at equal angles on the inner wall of the moving ring 32 and the valve needle 31, a plurality of vertical plates 34 are fixedly arranged at equal angles on the bottom surface of the moving ring 32, the vertical plate 34 is fixedly connected with the rack 35 engaged with the gear 46 at the corresponding position, the top surface of the moving ring 32 is provided with a chamfer at the inner diameter edge, and the outer diameter of the moving ring 32 is the same as the inner diameter of the feeding pipe 2.

[0031] In the embodiment, when the cylinder 3 drives the valve needle 31 at the corresponding position to move downward, the moving ring 32 drives the vertical plate 34 at the corresponding position and the rack 35 at the corresponding position to move downward, the rack 35 at the corresponding position is engaged with the gear 46 at the corresponding position to rotate the gear 46, and the gear 46 at the corresponding position rotates the worm 45 at the corresponding position, so that the valve needle 31 at the corresponding position can control the arc-shaped shell 41 at the corresponding position to be unfolded.

[0032] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure reference in the claims should not be regarded as limiting the involved claims.

[0033] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that can be understood by those skilled in the art.

Claims

1. An IP set top box upper case row bit inverted pin valve hot runner mold structure, characterized in that, The utility model relates to a kind of material discharging mechanism, including the shunt plate (1) installed in mould, the bottom surface both ends of the shunt plate (1) are provided with blanking tube (2) with the internal communication of shunt plate (1), the top surface of the shunt plate (1) is fixedly connected with air cylinder (3) corresponding blanking tube (2), the output end of the air cylinder (3) penetrates the inner top surface of shunt plate (1) and is fixedly connected with valve needle (31), the bottom end of the valve needle (31) is provided with moving ring (32), the outer wall bottom end of the blanking tube (2) is provided with discharge mechanism (4), the top surface of the shunt plate (1) is fixedly connected with with the electric push rod (5) of the fixed plate of upper mould fixed, the top surface middle part of the shunt plate (1) is fixedly connected with with the feeding hopper (6) of the penetration sliding of upper mould fixed plate, the feeding hopper (6) is communicated with the inside of shunt plate (1), the discharge mechanism (4) includes a plurality of annular equiangular distribution arc shell (41), a plurality of the arc shell (41) is folded and presents circular truncated cone structure.

2. The hot runner mold structure of a row of inverted pin valves for the upper shell of an IP set top box according to claim 1, characterized in that, The outer wall of the blanking tube (2) is annularly and equiangularly fixed with a plurality of fixed blocks (21), each group of fixed blocks (21) is symmetric, the outer wall of the arc shell (41) is fixedly connected with an L-shaped plate (42), the top end of the L-shaped plate (42) is fixedly connected with a connecting block (43) rotating between two fixed blocks (21) at corresponding positions.

3. The hot runner mold structure of claim 2, wherein, One side of the connecting block (43) is fixedly connected with a rotating shaft penetrating and rotating with the fixed block (21) at the corresponding position, the outer wall of the rotating shaft is fixedly connected with a worm gear (44), the outer wall of the blanking tube (2) is annularly and equiangularly fixed with a plurality of L-shaped blocks (22), the inner side of the L-shaped block (22) is rotatably connected with a worm (45) penetrating and rotating with the blanking tube (2) and engaging with the worm gear (44) at the corresponding position.

4. The hot runner mold structure of claim 3, wherein, The outer wall of the worm (45) inside the blanking tube (2) is fixedly connected with a gear (46), a plurality of connecting rods (33) are annularly and equiangularly fixed between the inner wall of the moving ring (32) and the valve needle (31), a plurality of vertical plates (34) are annularly and equiangularly fixed on the bottom surface of the moving ring (32), the bottom end of the vertical plate (34) is fixedly connected with a rack (35) engaging with the gear (46) at the corresponding position.

5. The hot runner mold structure of claim 4, wherein, The top surface of the moving ring (32) is chamfered at the inner diameter edge.

6. The hot runner mold structure of claim 5, wherein, The outer diameter of the moving ring (32) is the same as the inner diameter of the blanking tube (2).

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