Multi-stage nozzle of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, in particular to a multi-stage nozzle of an injection molding machine, which comprises a first-stage through pipe, a filter through pipe arranged at the bottom of the first-stage through pipe, a second-stage through pipe arranged at the bottom of the filter through pipe, a spray head arranged at the bottom of the second-stage through pipe, a connecting cylinder arranged at the top of the first-stage through pipe, and a fastening hoop arranged outside the spray head. Threaded pipes are symmetrically arranged at the top ends and the bottom ends of the first-stage through pipe and the second-stage through pipe, a filtering basket is arranged in the filtering through pipe, a push plate is arranged at the top end of the filtering net, an electric telescopic rod is arranged on one side face of the push plate, and a blocking plate is arranged on one side of the push plate; a threaded groove matched with the threaded pipe is formed in the filtering through pipe, the spray head and the connecting cylinder, and the problems that a traditional injection molding machine spray pipe is integrated, is troublesome to clean after being blocked, cannot be freely assembled according to actual conditions and is not high in practicability are solved by utilizing the structure of the through pipe, the baffle plate, the fastening hoop, the threaded pipe and the threaded groove.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, and specifically relates to a multi-stage nozzle of an injection molding machine. Background Technique

[0002] An injection molding machine is a main molding device that uses a plastic molding die to make various shaped plastic products from thermoplastic or thermosetting plastics. When it works, it is necessary to melt the solid raw materials and then inject them into the mold through a feeding pipe and a nozzle for molding.

[0003] Generally, the injection molding materials are easy to carry impurities during the flowing process, resulting in nozzle blockage, which affects the continuity and stability of the injection molding process. The traditional injection molding machine nozzle pipe is integrally formed, which is very troublesome to clean after blockage and cannot be freely assembled according to the actual situation, so the practicability is not high.

[0004] Therefore, it is particularly important to design a multi-stage nozzle of an injection molding machine to change the above technical defects and improve the overall practicability. Content of the Utility Model

[0005] The purpose of the utility model is to provide a multi-stage nozzle of an injection molding machine to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A multi-stage nozzle of an injection molding machine includes a first-stage through pipe. A filtering through pipe is provided at the bottom of the first-stage through pipe. A second-stage through pipe is provided at the bottom of the filtering through pipe. A nozzle head is provided at the bottom of the second-stage through pipe. A connecting cylinder is provided at the top of the first-stage through pipe. A fastening hoop is provided outside the nozzle head. A heating belt is provided at the bottom of the fastening hoop. Threaded pipes are symmetrically provided at the top and bottom ends of the first-stage through pipe and the second-stage through pipe. A filtering basket is provided inside the filtering through pipe. A filter screen is provided at the bottom end of the filtering basket. A push plate is provided at the top end of the filter screen. An electric telescopic rod is provided on one side surface of the push plate. A baffle is provided on one side of the push plate. Compression springs are symmetrically provided on one side surface of the baffle. Threaded grooves for matching with the threaded pipes are provided inside the filtering through pipe, the nozzle head, and the connecting cylinder.

[0008] As a preferred scheme of the utility model, mounting plates are provided at both ends of the fastening hoop. The positions between the two mounting plates are locked by bolts, and anti-slip textures are provided on the inner surface to enhance the friction with the nozzle head and ensure the fastening effect.

[0009] As a preferred scheme of the utility model, a cable plug is provided on the heating belt. The cable plug is powered by electricity for power supply, and a temperature sensor is provided inside the heating belt for real-time monitoring.

[0010] As a preferred solution of the present utility model, the inner wall of the filtering through pipe is coated with a wear-resistant and corrosion-resistant coating to improve its service life and reduce the erosion of the injection molding material on the filtering through pipe.

[0011] As a preferred solution of the present utility model, flow meters are provided outside the primary through pipe and the secondary through pipe for monitoring.

[0012] As a preferred solution of the present utility model, the push plate and the baffle are adapted to each other. A discharge port is provided inside the filtering through pipe, and a guide plate is provided inside the discharge port.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In the present utility model, by providing a multi-stage nozzle of an injection molding machine and using the structures of a through pipe, an electric telescopic rod, a heating belt, a baffle, a fastening hoop, a threaded pipe, and a threaded groove, and by providing a filtering basket and a filter screen, impurities in the injection molding material are effectively removed to ensure the purity of the injection molding process. At the same time, the equipped electric telescopic rod and push plate mechanism realize the automatic cleaning of the filtering basket without the need to stop the machine for disassembly, greatly improving the production efficiency and convenience. The sealing gaskets provided between the baffle, the push plate and the filtering basket effectively prevent the leakage of raw materials, ensuring the cleanliness and safety of the injection molding process, and solving the problems that general injection molding materials are prone to carry impurities during the flow process, resulting in nozzle blockage, affecting the continuity and stability of the injection molding process, and that the traditional injection molding machine nozzle is integrated, which is very troublesome to clean after blockage and cannot be freely assembled according to the actual situation, and has low practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structure diagram of the present utility model;

[0016] Figure 2 is the schematic diagram of the overall disassembly of the present utility model;

[0017] Figure 3 is the structural schematic diagram of the filtering basket assembly of the present utility model.

[0018] In the figure: 1, primary through pipe; 2, filtering through pipe; 201, filtering basket; 202, filter screen; 203, push plate; 204, electric telescopic rod; 205, baffle; 206, compression spring; 3, secondary through pipe; 4, nozzle; 401, fastening hoop; 402, heating belt; 403, threaded pipe; 404, threaded groove; 5, connecting cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0020] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used herein in the specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] For the embodiments, please refer to Figures 1-3 , the present utility model provides a technical solution:

[0024] A multi-stage nozzle of an injection molding machine, comprising a first-stage through pipe 1. A filtering through pipe 2 is provided at the bottom of the first-stage through pipe 1. A second-stage through pipe 3 is provided at the bottom of the filtering through pipe 2. A nozzle head 4 is provided at the bottom of the second-stage through pipe 3. A connecting cylinder 5 is provided at the top of the first-stage through pipe 1. A fastening hoop 401 is provided outside the nozzle head 4. A heating belt 402 is provided at the bottom of the fastening hoop 401. Threaded pipes 403 are symmetrically provided at the top and bottom ends of the first-stage through pipe 1 and the second-stage through pipe 3. A filtering basket 201 is provided inside the filtering through pipe 2. A filter screen 202 is provided at the bottom end of the filtering basket 201. A push plate 203 is provided at the top end of the filter screen 202. An electric telescopic rod 204 is provided on one side surface of the push plate 203. A baffle plate 205 is provided on one side of the push plate 203. Compression springs 206 are symmetrically provided on one side surface of the baffle plate 205. Threaded grooves 404 for adapting to the threaded pipes 403 are provided inside the filtering through pipe 2, the nozzle head 4, and the connecting cylinder 5. The connecting cylinder 5 can be connected to the injection molding machine body by threaded connection according to specific circumstances. Subsequently, the injection molding material flows through the first-stage through pipe 1 and then through the filtering through pipe 2 provided at the bottom. Inside the filtering through pipe 2, the material removes impurities through the built-in filter screen 202. When it is necessary to clean the filtering basket 201, the electric telescopic rod 204 drives the push plate 203 to move forward. The push plate 203 squeezes the baffle plate 205 and overcomes the resistance of the compression springs 206, separating the baffle plate 205 from the filtering basket 201. The impurities are then pushed out and discharged through the discharge port. In actual use, sealing gaskets are provided between the baffle plate 205, the push plate 203, and the filter 201 to avoid leakage of raw materials. The filtered material continues to flow through the second-stage through pipe 3 to the nozzle head 4. Outside the nozzle head 4, the fastening hoop 401 fixes the position of the heating belt 402 through a mounting plate and bolts, and the heating belt 402 is adjusted according to the temperature monitored by the temperature sensor in real time to ensure that the raw material inside the nozzle head 4 does not solidify and prevent blockage. Flow meters are provided on both the first-stage through pipe and the second-stage through pipe to monitor the flow rate of the raw material in real time, ensuring the stability and accuracy of the injection molding process. Finally, the processed injection molding material is sprayed out through the nozzle head to complete the injection molding operation;

[0025] Both ends of the fastening hoop 401 are provided with mounting plates. The positions between the two mounting plates are locked by bolts, and the inner surface is provided with anti-slip textures to enhance the friction with the nozzle 4, ensure the fastening effect, and facilitate the adjustment of the position of the heating belt. The heating belt 402 is provided with a cable plug, and the cable plug is powered by electricity. The interior of the heating belt 402 is provided with a temperature sensor for real-time monitoring to prevent the raw material inside the nozzle from solidifying and blocking the nozzle. The inner wall of the filtering through-tube 2 is coated with an abrasion-resistant and corrosion-resistant coating to improve its service life and reduce the erosion of the injection molding material on the filtering through-tube 2. The abrasion-resistant and corrosion-resistant coating is a chromium oxide coating. Flow meters are provided outside the primary through-tube 1 and the secondary through-tube 3 to monitor the flow rate of the raw material inside the through-tube. The push plate 203 and the baffle 205 are adapted to each other. The interior of the filtering through-tube 2 is provided with a discharge port, and a guide plate is provided inside the discharge port. By squeezing the baffle 205 with the push plate, the baffle is separated from the filtering basket, and the impurities are discharged from the discharge port inside the filtering through-tube.

[0026] The working process of the present utility model: When using the multi-stage nozzle of this injection molding machine, first connect the connecting cylinder 5 with the injection molding machine main body, which can be a threaded connection according to specific circumstances. Subsequently, the injection molding material flows through the primary through-tube 1 at the bottom and then through the filtering through-tube 2. Inside the filtering through-tube 2, the material removes impurities through the built-in filter screen 202. When it is necessary to clean the filtering basket 201, the electric telescopic rod 204 drives the push plate 203 to move forward. The push plate 203 squeezes the baffle 205 and overcomes the resistance of the compression spring 206, causing the baffle 205 to separate from the filtering basket 201. The impurities are then pushed out and discharged through the discharge port. In actual use, sealing gaskets are provided between the baffle 205, the push plate 203, and the filter 201 to prevent the leakage of raw materials. The filtered material continues to flow through the secondary through-tube 3 to the nozzle 4. Outside the nozzle 4, the fastening hoop 401 fixes the position of the heating belt 402 through the mounting plate and bolts, and the heating belt 402 is adjusted according to the temperature monitored in real time by the temperature sensor to ensure that the raw material inside the nozzle 4 does not solidify and prevent blockage. Flow meters are provided on both the primary through-tube and the secondary through-tube to monitor the flow rate of the raw material in real time, ensuring the stability and accuracy of the injection molding process. Finally, the processed injection molding material is ejected through the nozzle to complete the injection molding operation.

[0027] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage nozzle for an injection molding machine, comprising a first-stage through pipe (1), characterized in that: The bottom of the primary tube (1) is provided with a filter tube (2), the bottom of the filter tube (2) is provided with a secondary tube (3), the bottom of the secondary tube (3) is provided with a nozzle (4), the top of the primary tube (1) is provided with a connecting tube (5), the outside of the nozzle (4) is provided with a fastening hoop (401), the bottom of the fastening hoop (401) is provided with a heat-generating belt (402), the top and bottom ends of the primary tube (1) and the secondary tube (3) are symmetrically provided with threaded tubes (403), the inside of the filter tube (2) is provided with A filter basket (201), wherein a filter net (202) is provided at the bottom end of the filter basket (201), a push plate (203) is provided at the top end of the filter net (202), an electric telescopic rod (204) is provided on one side of the push plate (203), a baffle (205) is provided on one side of the push plate (203), a compression spring (206) is symmetrically provided on one side of the baffle (205), and a threaded groove (404) for matching with the threaded pipe (403) is provided inside the filter through pipe (2), the nozzle (4), and the connecting tube (5).

2. The multi-stage nozzle of an injection molding machine according to claim 1, characterized in that: Mounting plates are provided at both ends of the fastening hoop (401), the two mounting plates are locked in place by bolts, and the inner surfaces are provided with anti-slip textures to enhance friction with the spray head (4) and ensure a fastening effect.

3. The multi-stage nozzle of an injection molding machine according to claim 1, characterized in that: The heat-generating belt (402) is provided with a cable plug, the cable plug is connected to electricity for power supply, and a temperature sensor is provided inside the heat-generating belt (402) for real-time monitoring.

4. The multi-stage nozzle of an injection molding machine according to claim 1, characterized in that: The inner wall of the filter tube (2) is coated with a wear-resistant and corrosion-resistant coating to increase its service life and reduce the erosion of the filter tube (2) by the injection molding material.

5. The multi-stage nozzle of an injection molding machine according to claim 1, characterized in that: Flow meters are provided outside the primary through pipe (1) and the secondary through pipe (3) for monitoring.

6. The multi-stage nozzle of an injection molding machine according to claim 1, characterized in that: The push plate (203) is adapted to fit the baffle plate (205), a discharge port is provided inside the filter tube (2), and a guide plate is provided inside the discharge port.

Images