Plastic product injection molding device

Abstract

The utility model provides a plastic product injection molding device which comprises a bottom plate, a bottom die is fixedly arranged at the top of the bottom plate, a first groove is formed in the top of the bottom die, a second groove is formed in the bottom die, a threaded rod is movably arranged in the second groove, and a nut seat is movably arranged outside the threaded rod. A lifting plate is fixedly arranged on one side of the nut seat, a supporting rod is fixedly arranged on the top of the lifting plate, and one end of the supporting rod extends into the first groove and is fixedly connected with the bottom of the supporting plate. After injection molding is finished, the threaded rod is driven to rotate, so that the nut seat drives the lifting plate to do vertical lifting motion, the lifting plate drives the supporting rod and the supporting plate to do vertical lifting motion, a plastic product formed in the first groove can be ejected out, and demolding of the formed plastic product is facilitated; and therefore, the complexity of manual demolding is reduced, and rapid demolding is realized.

Description

Technical Field

[0001] This utility model belongs to the field of plastic product injection molding technology, specifically a plastic product injection molding device. Background Technology

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. Its principle involves using the movement of a screw or plunger in an injection molding machine to inject heated and plasticized viscous plastic from the barrel into a pre-closed mold cavity at high pressure and speed. After cooling and hardening, it becomes the desired product.

[0003] Chinese utility model patent CN221584380U discloses a quantitative injection mold for automobiles, including a mounting frame. A bottom mold is disposed below the mounting frame, and a mounting plate is disposed above the bottom mold along the left-right direction. Two vertical sliding grooves are formed on the mounting frame. A pumping component and a metering mechanism are connected via a conveying mechanism. The bottom end of the metering mechanism is open and connected to the injection port of the top mold via a pipe. The metering mechanism measures the amount of molten plastic for each injection molding. Then, the molten plastic is introduced into the metering mechanism by the pumping component through the conveying mechanism, and then input into the molding cavity formed by the bottom mold and the top mold. This ensures that the amount of molten plastic input is the same each time, avoiding material waste and ensuring that insufficient input does not affect product quality.

[0004] However, although the above-mentioned injection mold achieves quantitative feeding and does not cause waste of raw materials, the existing device is not convenient for demolding after the plastic product is formed, which greatly reduces the work efficiency and has certain limitations, making it inconvenient for users to use. Utility Model Content

[0005] This invention provides a plastic product injection molding device to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A plastic product injection molding apparatus includes a base plate, a bottom mold fixedly mounted on the top of the base plate, a first groove formed on the top of the bottom mold, a second groove formed inside the bottom mold, a threaded rod movably mounted inside the second groove, a nut seat movably mounted outside the threaded rod, a lifting plate fixedly mounted on one side of the nut seat, a support rod fixedly mounted on the top of the lifting plate, one end of the support rod extending into the interior of the first groove and fixedly connected to the bottom of the support plate, and a mounting bracket fixedly mounted on the top of the base plate.

[0008] In a preferred embodiment, a first bevel gear is fixedly disposed on the outside of one end of the threaded rod, and a second bevel gear is movably disposed on one side of the first bevel gear, with the first bevel gear meshing with the second bevel gear.

[0009] In a preferred embodiment, a rotating handle is fixedly provided inside the second bevel gear.

[0010] In a preferred embodiment, the threaded rod is threadedly connected to the nut seat, and the nut seat has a threaded hole inside that is compatible with the threaded rod.

[0011] In a preferred embodiment, a first electric push rod is fixedly provided at both ends of the top of the mounting frame. The telescopic end of the first electric push rod passes through the mounting frame and is fixedly connected to the top of the mounting plate. A top mold is fixedly provided at the bottom of the mounting plate.

[0012] In a preferred embodiment, sliders are fixedly provided on both sides of the mounting plate, and a sliding groove adapted to the slider is provided on the inner side of the mounting bracket, and the slider is slidably connected to the sliding groove.

[0013] In a preferred embodiment, a pumping assembly is fixedly installed on the top of the mounting frame, a pump body is fixedly installed on the bottom of the pumping assembly, and a delivery hose is fixedly installed on the bottom of the pump body. One end of the delivery hose passes through the metering tank and extends into the interior of the metering tank.

[0014] In a preferred embodiment, a second electric push rod is fixedly mounted on the top of the metering tank, and the telescopic end of the second electric push rod extends into the interior of the metering tank and is fixedly connected to the top of the piston plate. Compared with the prior art, this utility model has the following advantages:

[0015] (1) After the injection molding is completed, the present invention drives the threaded rod to rotate, so that the nut seat drives the lifting plate to make vertical lifting motion. In this way, the lifting plate drives the support rod and the support plate to make vertical lifting motion, which can push out the plastic product formed in the first groove, making it easier to demold the molded plastic product, thereby reducing the tediousness of manual demolding and realizing rapid demolding.

[0016] (2) When injection molding is required, the pump body is started to transport the injection molding material inside the pumping component to the inside of the metering tank through the conveying hose. When the specified capacity is reached, the second electric push rod is started to drive the piston plate downward by its extension end, so that the injection molding material inside the metering tank can be pushed into the inside of the first groove, and the injection molding of plastic products can be carried out. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the plastic product injection molding device of this utility model;

[0018] Figure 2 This is a front view structural diagram of the plastic product injection molding device of this utility model;

[0019] Figure 3 This is a schematic diagram of the bottom mold structure of the plastic product injection molding device of this utility model.

[0020] The figure shows: 1. Base plate; 2. Bottom mold; 201. First groove; 3. Second groove; 301. Threaded rod; 302. First bevel gear; 303. Second bevel gear; 304. Rotating handle; 305. Nut seat; 306. Lifting plate; 307. Support rod; 308. Support plate; 4. Mounting bracket; 401. First electric push rod; 402. Mounting plate; 403. Top mold; 404. Slider; 405. Slide groove; 5. Pumping assembly; 501. Pump body; 502. Delivery hose; 503. Metering tank; 504. Second electric push rod; 505. Piston plate. Detailed Implementation

[0021] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1 to 3 As shown, this embodiment of the utility model provides a plastic product injection molding apparatus, specifically including a base plate 1, a bottom mold 2 fixedly mounted on the top of the base plate 1, a first groove 201 formed on the top of the bottom mold 2, a second groove 3 formed inside the bottom mold 2, a threaded rod 301 movably mounted inside the second groove 3, and a nut seat 305 movably mounted outside the threaded rod 301. A lifting plate 306 is fixedly mounted on one side of the nut seat 305, and a support rod 307 is fixedly mounted on the top of the lifting plate 306. One end of the support rod 307 extends into the interior of the first groove 201 and is fixedly connected to the bottom of the support plate 308. A mounting bracket 4 is fixedly mounted on the top of the base plate 1. In this embodiment, after injection molding is completed, the threaded rod 301 is rotated, causing the nut seat 305 to drive the lifting plate 306 to move vertically. This causes the lifting plate 306 to drive the support rod 307 and the support plate 308 to move vertically, which can push out the plastic product formed in the first groove 201, making it easier to demold the molded plastic product and reducing the tediousness of manual demolding.

[0023] Please see Figures 1 to 3As shown, a first bevel gear 302 is fixedly mounted on the outside of one end of the threaded rod 301, and a second bevel gear 303 is movably mounted on one side of the first bevel gear 302. A rotating handle 304 is fixedly mounted inside the second bevel gear 303, and the first bevel gear 302 and the second bevel gear 303 mesh with each other. By setting the first bevel gear 302 and the second bevel gear 303, and utilizing their meshing connection, rotating the rotating handle 304 drives the second bevel gear 303 to rotate, which in turn drives the first bevel gear 302 to rotate, thereby causing the first bevel gear 302 to drive the threaded rod 301 to rotate, achieving the purpose of driving the threaded rod 301 to rotate. The steps are simple, the operation is convenient, and it has strong convenience.

[0024] Please see Figures 1 to 3 As shown, the threaded rod 301 is threadedly connected to the nut seat 305, and the nut seat 305 has a threaded hole inside that matches the threaded rod 301. By setting the threaded rod 301 and the nut seat 305, and utilizing the threaded connection between them, the threaded rod 301 is rotated, causing the nut seat 305 to drive the lifting plate 306 to move vertically up and down. This, in turn, causes the lifting plate 306 to drive the support rod 307 and the support plate 308 to move vertically up and down, thus ejecting the plastic product formed in the first groove 201. This facilitates demolding of the molded plastic product and reduces the tediousness of manual demolding.

[0025] Please see Figures 1 to 3 As shown, a first electric push rod 401 is fixedly installed at both ends of the top of the mounting frame 4. The telescopic end of the first electric push rod 401 passes through the mounting frame 4 and is fixedly connected to the top of the mounting plate 402. A top mold 403 is fixedly installed at the bottom of the mounting plate 402. By setting the first electric push rod 401, when performing plastic product injection molding, the first electric push rod 401 is activated so that its output shaft drives the mounting plate 402 and the top mold 403 to perform vertical lifting and lowering movements, so that the top mold 403 descends into the interior of the first groove 201, and the plastic product injection molding can be performed.

[0026] Please see Figures 1 to 3 As shown, sliders 404 are fixedly installed on both sides of the mounting plate 402. A groove 405, adapted to the slider 404, is provided on the inner side of the mounting bracket 4. The slider 404 and the groove 405 are slidably connected. By setting the slider 404 and the groove 405, and utilizing their sliding connection, when the nut seat 305 drives the lifting plate 306 to move vertically up and down, the slider 404 also slides synchronously inside the groove 405. This improves the stability of the lifting plate 306's movement, thereby enhancing the stability of the entire injection molding mechanism and increasing the injection molding efficiency of plastic products.

[0027] Please see Figures 1 to 3 As shown, a pumping assembly 5 is fixedly mounted on the top of the mounting frame 4, a pump body 501 is fixedly mounted on the bottom of the pumping assembly 5, and a conveying hose 502 is fixedly mounted on the bottom of the pump body 501. One end of the conveying hose 502 passes through the metering tank 503 and extends into the interior of the metering tank 503. A second electric push rod 504 is fixedly mounted on the top of the metering tank 503, and the telescopic end of the second electric push rod 504 extends into the interior of the metering tank 503 and is fixedly connected to the top of the piston plate 505. In use, the injection molding material inside the pumping assembly 5 is pumped through the conveying hose 502 to the interior of the metering tank 503 when the specified capacity is reached. When the specified capacity is reached, the second electric push rod 504 is activated, causing its telescopic end to move the piston plate 505 downward, thus pushing the injection molding material inside the metering tank 503 into the interior of the first groove 201, thereby enabling the injection molding of plastic products.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for injection moulding plastic articles, comprising a base plate (1), characterised in that: The top of the bottom plate (1) is fixedly provided with a bottom die (2), the top of the bottom die (2) is provided with a first slot (201), the inside of the bottom die (2) is provided with a second slot (3), the inside of the second slot (3) is movably provided with a threaded rod (301), the outside of the threaded rod (301) is movably provided with a nut seat (305), one side of the nut seat (305) is fixedly provided with a lifting plate (306), the top of the lifting plate (306) is fixedly provided with a supporting rod (307), one end of the supporting rod (307) extends to the inside of the first slot (201) and is fixedly connected with the bottom of the supporting plate (308), and the top of the bottom plate (1) is fixedly provided with a mounting rack (4).

2. The apparatus of claim 1, wherein: The outside of one end of the threaded rod (301) is fixedly provided with a first bevel gear (302), one side of the first bevel gear (302) is movably provided with a second bevel gear (303), and the first bevel gear (302) is engaged with the second bevel gear (303).

3. The apparatus of claim 2, wherein: The inside of the second bevel gear (303) is fixedly provided with a rotating handle (304).

4. The apparatus of claim 1, wherein: The threaded rod (301) is in threaded connection with the nut seat (305), and the inside of the nut seat (305) is provided with a threaded hole matched with the threaded rod (301).

5. The apparatus of claim 1, wherein: The top of the mounting rack (4) is fixedly provided with a first electric push rod (401) at both ends, and the telescopic end of the first electric push rod (401) penetrates the mounting rack (4) and is fixedly connected with the top of the mounting plate (402).

6. The apparatus of claim 5, wherein: The bottom of the mounting plate (402) is fixedly provided with a top die (403), both sides of the mounting plate (402) are fixedly provided with a sliding block (404), and the inside of the mounting rack (4) is provided with a sliding groove (405) matched with the sliding block (404), and the sliding block (404) is in sliding connection with the sliding groove (405).

7. The apparatus of claim 1, wherein: The top of the mounting rack (4) is fixedly provided with a pumping assembly (5), the bottom of the pumping assembly (5) is fixedly provided with a pump body (501), the bottom of the pump body (501) is fixedly provided with a conveying hose (502), one end of the conveying hose (502) penetrates a metering tank (503) and extends to the inside of the metering tank (503).

8. The apparatus of claim 7, wherein: The top of the metering tank (503) is fixedly provided with a second electric push rod (504), and the telescopic end of the second electric push rod (504) extends to the inside of the metering tank (503) and is fixedly connected with the top of a piston plate (505).

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