Injection molding machine with injection molding nozzle protection mechanism

Abstract

The utility model relates to the technical field of injection molding machines, in particular to an injection molding machine with an injection molding nozzle protection mechanism, which comprises a case and a spray head for injection molding, a clamping seat is fixedly mounted on the spray head, a through hole communicated with the clamping seat and used for conveying residual raw materials is formed in the spray head, and a clamping sleeve is mounted on the clamping seat. And a pressurizing pipe which corresponds to the through hole and is used for pressurizing the residual raw materials is mounted on the clamping sleeve. The corresponding three-way pipe is arranged on the machine box, so that residual raw materials in the spray head can be extracted after the piston in the three-way pipe is pressurized, accumulation of the residual raw materials is effectively reduced, and the service life of the spray head is effectively prolonged; the clamping seat is arranged on the spray head, the three-way pipe is lifted through the clamping sleeve, and the transverse pipe is attached to the through hole through the sealing ring, so that the clamping seat and the clamping sleeve are rapidly connected, and residual raw materials in the spray head are convenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to an injection molding machine with an injection nozzle protection mechanism. Background Art

[0002] An injection molding machine is the main molding equipment for making various shaped plastic products from thermoplastic or thermosetting plastics using plastic molding dies.

[0003] When the injection molding machine is running, raw materials are conveyed into the mold through the nozzle. After each use of the nozzle, a part of the raw materials adheres to the nozzle. The structure of the nozzle makes it inconvenient to clean. Over time, the raw materials will accumulate inside the nozzle, and the raw materials will accumulate at the nozzle outlet, resulting in poor conveying efficiency of the nozzle. This requires the nozzle to be disassembled, thus affecting the conveying efficiency of the nozzle for raw materials. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem that raw materials accumulate in the nozzle in the prior art, and an injection molding machine with an injection nozzle protection mechanism is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An injection molding machine with an injection nozzle protection mechanism includes a machine case and a nozzle for injection molding. A clamping seat is fixedly installed on the nozzle. A through hole is opened on the nozzle, which is communicated with the clamping seat and used for conveying residual raw materials. A clamping sleeve is installed on the clamping seat, and a pressure pipe corresponding to the through hole and used for pressurizing the residual raw materials is installed on the clamping sleeve.

[0007] Preferably, the clamping seat is of a circular structure. A sealing sleeve is installed on the nozzle. The clamping sleeve is of a circular structure. A cavity for accommodating the clamping sleeve is opened on the clamping seat. A locking bolt connected to the clamping sleeve is threadedly connected to the clamping seat.

[0008] Preferably, the pressure pipe is composed of a horizontal pipe and a vertical pipe. The clamping sleeve is arranged on the horizontal pipe. Two one-way valves for controlling the flow direction of the residual raw materials are arranged in the horizontal pipe.

[0009] Preferably, a sealing ring fitting the through hole is fixedly installed on the horizontal pipe. A support is pin-installed on the clamping seat, and a sealing plate extending to the clamping seat is pin-installed on the support. A sealing gasket extending into the clamping seat is integrally connected to the sealing plate. A snap fit is arranged between the sealing plate and the clamping seat.

[0010] Preferably, a piston for pressurizing the residual raw material is provided in the sliding sleeve in the vertical tube, and a moving rod is fixedly mounted on the piston, a moving plate is integrally connected to the moving rod, and a spring matching the moving rod is welded between the moving plate and the vertical tube.

[0011] Preferably, the movable plate and the movable rod extend to the lower end position outside the vertical tube, the spring is sleeved on the movable rod, a rotating rod is rotatably installed on the chassis, and a handle and a telescopic rod are fixedly installed on the rotating rod, and the output end of the telescopic rod is fixedly connected to a resistance rod that resists the movable plate.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The utility model arranges a corresponding three-way pipe on the chassis so that the piston in the three-way pipe can extract the residual raw material in the nozzle after being pressurized, thereby effectively reducing the accumulation of residual raw materials and effectively improving the service life of the nozzle.

[0014] 2. The utility model arranges a holder on the nozzle, lifts the three-way pipe through a sleeve, fits the cross pipe with the through hole through a sealing ring, and then quickly connects the holder and the sleeve, so that the residual raw material in the nozzle is more convenient to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a bottom view of an injection molding machine with an injection molding nozzle protection mechanism proposed by the utility model;

[0016] Figure 2 This is a structural schematic diagram of an injection molding machine with an injection molding nozzle protection mechanism proposed by the utility model;

[0017] Figure 3 This is a cross-sectional view of a nozzle of an injection molding machine with an injection molding nozzle protection mechanism proposed by the utility model;

[0018] Figure 4 This is a cross-sectional view of an injection molding machine with an injection molding nozzle protection mechanism proposed by the utility model;

[0019] Figure 5 It is an enlarged schematic diagram of structure A of an injection molding machine with an injection molding nozzle protection mechanism proposed by the utility model.

[0020] In the figure: 1, chassis; 2, nozzle; 3, through hole; 4, holder; 5, sleeve; 6, horizontal tube; 7, vertical tube; 8, sealing ring; 9, piston; 10, moving rod; 11, moving plate; 12, spring; 13, sealing sleeve; 14, sealing plate; 15, sealing gasket; 16, rotating rod; 17, telescopic rod. DETAILED DESCRIPTION

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0022] Referring to Figures 1 - 5 , an injection molding machine with an injection nozzle protection mechanism includes a machine case 1 and a nozzle 2 for injection molding. After the machine case 1 is powered on, the injection molding raw material can be ejected through the nozzle 2. This technical solution is the prior art and will not be elaborated here. A clamping seat 4 is fixedly installed on the nozzle 2. A through hole 3 is opened on the nozzle 2, which is connected to the clamping seat 4 and used to convey the residual raw material. A sleeve 5 is installed on the clamping seat 4. By opening the through hole 3 on the nozzle 2, the residual raw material in the nozzle 2 can be discharged from the through hole 3, making it more convenient to clean the residual raw liquid.

[0023] The clamping seat 4 is of a loop structure. A sealing sleeve 13 is installed on the nozzle 2. The sleeve 5 is of a loop structure. A cavity for accommodating the sleeve 5 is opened on the clamping seat 4. A locking bolt connected to the sleeve 5 is threadedly connected to the clamping seat 4. By accommodating the sleeve 5 through the cavity, the sleeve 5 can extend into the clamping seat 4. The locking bolt is used to connect the clamping seat 4 and the sleeve 5, and then the sleeve 5 is installed on the clamping seat 4 and corresponds to the through hole 3.

[0024] A pressure pipe corresponding to the through hole 3 and used to pressurize the residual raw material is installed on the sleeve 5. The pressure pipe is composed of a horizontal pipe 6 and a vertical pipe 7. The sleeve 5 is arranged on the horizontal pipe 6. Two one-way valves for controlling the flow direction of the residual raw material are arranged in the horizontal pipe 6. After the right one-way valve is opened, the residual raw material can only be discharged from the through hole 3.

[0025] A sealing ring 8 fittingly attached to the through hole 3 is fixedly installed on the horizontal pipe 6. A support is pin-mounted on the clamping seat 4, and a sealing plate 14 extending to the clamping seat 4 is pin-mounted on the support. A sealing gasket 15 extending into the clamping seat 4 is integrally connected to the sealing plate 14. Matching buckles are provided between the sealing plate 14 and the clamping seat 4. When the nozzle 2 is not in use, the sealing plate 14 can cover the clamping seat 4 when deflecting in the support. After the sealing plate 14 deflects, the sealing gasket 15 driven by it can extend into the clamping seat 4, thereby sealing the nozzle 2.

[0026] A piston 9 for pressurizing the residual raw material is slidably sleeved in the vertical pipe 7. A moving rod 10 is fixedly installed on the piston 9. A moving plate 11 is integrally connected to the moving rod 10. A spring 12 matching the moving rod 10 is welded between the moving plate 11 and the vertical pipe 7. The spring 12 functions to reset the piston 9, so that when the moving plate 11 is not stressed, the spring 12 can drive the moving plate 11 and the piston 9 back to the initial position.

[0027] The moving plate 11 and the lower end of the moving rod 10 extend outside the vertical pipe 7. The spring 12 is sleeved on the moving rod 10. A rotating rod 16 is rotatably installed on the chassis 1, and a handle and a telescopic rod 17 are fixedly installed on the rotating rod 16. The output end of the telescopic rod 17 is fixedly connected with a contact rod that is movably abutted against the moving plate 11. When the nozzle 2 needs to be cleaned, the output end of the telescopic rod 17 drives the contact rod to move, and the contact rod can intermittently press on the moving plate 11. When the moving plate 11 moves, it drives the moving rod 10 and the piston 9 to reciprocate in the vertical pipe 7, thereby extracting the residual stock solution in the nozzle 2 into the three-way pipe, enabling the nozzle 2 to quickly process the accumulated residual stock solution during use, and effectively improving the service life of the chassis 1 and the nozzle 2.

[0028] The functional principle of the present utility model can be elaborated through the following operation methods:

[0029] When the chassis 1 is operating, the stock solution is conveyed into the mold through the nozzle 2. When the residual raw material in the nozzle 2 needs to be cleaned, first install the sealing sleeve 13 on the nozzle 2;

[0030] Manually pull the buckle to disconnect the sealing plate 14 from the card seat 4, and pull the sealing plate 14 so that when the sealing plate 14 deflects on the support, the sealing gasket 15 is disconnected from the card seat 4;

[0031] Lift the pressure pipe so that the pressure pipe drives the ferrule 5 to move synchronously;

[0032] When the ferrule 5 moves, it can extend into the cavity in the card seat 4, so that the right end of the horizontal pipe 6 extends into the card seat 4 and the through hole 3 in sequence. When the ferrule 5 fits with the card seat 4, the sealing ring 8 on the horizontal pipe 6 can fit with the through hole 3, and use the locking bolt to connect the card seat 4 and the ferrule 5;

[0033] Drive the rotating rod 16 to rotate through the handle. When the rotating rod 16 rotates, it drives the telescopic rod 17, the contact rod and the moving plate 11 to correspond;

[0034] The output end of the telescopic rod 17 expands and contracts to drive the moving plate 11 to apply pressure. The moving plate 11 drives the moving rod 10 to slide in the vertical pipe 7, and the spring 12 is stressed, so that the moving rod 10 drives the piston 9 to pressurize the vertical pipe 7. When the moving plate 11 reciprocates, a negative pressure is formed in the nozzle 2, and thus the residual raw material in the nozzle 2 flows into the horizontal pipe 6 through the through hole 3;

[0035] After the residual raw material in the nozzle 2 is cleaned, remove the three-way pipe and process the residual raw material in the three-way pipe.

[0036] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. An injection molding machine with an injection nozzle protection mechanism, comprising a machine case (1) and a nozzle (2) for injection molding, characterized in that, A card holder (4) is fixedly installed on the spray head (2). A through hole (3) is formed in the spray head (2) and is communicated with the card holder (4) to convey the residual raw material. A ferrule (5) is installed on the card holder (4), and a pressure pipe corresponding to the through hole (3) and used for pressurizing the residual raw material is installed on the ferrule (5).

2. The injection molding machine with an injection nozzle protection mechanism according to claim 1, wherein, The card holder (4) is of a loop structure. A sealing sleeve (13) is installed on the spray head (2). The ferrule (5) is of a loop structure. A cavity for accommodating the ferrule (5) is formed in the card holder (4). A locking bolt connected to the ferrule (5) is threadedly connected to the card holder (4).

3. The injection molding machine with an injection nozzle protection mechanism according to claim 1, characterized in that, The pressure pipe is composed of a horizontal pipe (6) and a vertical pipe (7). The ferrule (5) is arranged on the horizontal pipe (6). Two one-way valves for controlling the flow direction of the residual raw material are arranged in the horizontal pipe (6).

4. An injection molding machine with an injection nozzle protection mechanism according to claim 3, characterized in that, A sealing ring (8) fitting the through hole (3) is fixedly installed on the horizontal pipe (6). A support is pin-mounted on the card holder (4), and a sealing plate (14) extending to the card holder (4) is pin-mounted on the support. A sealing gasket (15) extending into the card holder (4) is integrally connected to the sealing plate (14). A snap-fastener is arranged between the sealing plate (14) and the card holder (4).

5. An injection molding machine with an injection nozzle protection mechanism according to claim 3, characterized in that, A piston (9) for pressurizing the residual raw material is slidably sleeved in the vertical pipe (7). A moving rod (10) is fixedly installed on the piston (9). A moving plate (11) is integrally connected to the moving rod (10). A spring (12) matching the moving rod (10) is welded between the moving plate (11) and the vertical pipe (7).

6. The injection molding machine with an injection nozzle protection mechanism according to claim 5, characterized in that, The moving plate (11) and the moving rod (10) extend to the lower end position outside the vertical pipe (7). The spring (12) is sleeved on the moving rod (10). A rotating rod (16) is rotatably installed on the chassis (1). A handle and a telescopic rod (17) are fixedly installed on the rotating rod (16). A contact rod that is movably abutted against the moving plate (11) is fixedly connected to the output end of the telescopic rod (17).

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