Injection molding device of injection molding machine
By combining snap-fit components with a snap-ring structure and a preheating system, the installation and disassembly process of the mold and injection unit is simplified, as is the installation and disassembly process of the mold components. This solves the problem of long mold changeover time in existing technologies and improves the working efficiency of the injection molding machine.
Patent Information
- Application Number
- CN202520135936.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-21
AI Technical Summary
The existing injection molding machine mold and injection unit have complicated installation and connection methods, resulting in long mold replacement time, increased equipment downtime, and reduced work efficiency.
The system uses snap-fit components and snap rings to replace traditional bolt fastening. It combines a preheater and heating wire to preheat the injection molding liquid. An auger and heater, along with a heating pipe, are used for conveying and pushing the liquid. A motor drives the rotating shaft, and a control cylinder controls its extension and retraction. The auger and heater ensure the stability and reliability of the snap-fit components, making operation convenient and fast. This facilitates the installation and disassembly of mold components, reduces equipment downtime, and improves work efficiency. The control cylinder's extension and retraction also allows for easy separation of the mold components from the injection head.
It simplifies the mold change process, reduces equipment downtime, improves work efficiency, ensures the fluidity and full filling of the injection molding liquid, reduces product defects, and shortens injection time.
Smart Images

Figure CN223834991U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molding equipment technology, and in particular to an injection molding device for an injection molding machine. Background Technology
[0002] An injection molding machine is a mechanical device used to produce plastic products. It injects molten plastic into a mold, where it solidifies to form the desired plastic product. The injection molding unit is a crucial system within the machine, and its design and performance significantly impact the stability of the injection molding process, production efficiency, and product quality. Therefore, selecting a suitable injection molding unit and performing regular maintenance are key to ensuring smooth production.
[0003] The existing installation and connection methods between molds and injection molding equipment are complicated, usually using multiple bolts for fastening. When mold replacement is required, this leads to increased replacement time and increased equipment downtime, resulting in reduced work efficiency. Utility Model Content
[0004] The purpose of this utility model is to solve the problem that the installation and connection method between the mold and the injection device in the prior art is complicated, usually using multiple bolts for fastening. When the mold needs to be replaced, it leads to increased replacement time and increased equipment downtime, resulting in reduced work efficiency. Therefore, this utility model proposes an injection device for an injection molding machine.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: an injection molding device for an injection molding machine, comprising an injection molding assembly and a mold assembly, wherein the injection molding assembly is provided with a preheating assembly and a heating assembly, and the mold assembly is provided with an installation assembly on its side; the injection molding assembly includes an injection tube, one end of which is connected to an injection head; the mold assembly includes a feed tube, the surface of which is provided with a sealing ring; the installation assembly includes multiple rotating seats, the outer side of which is connected with a fastening element; the outer side of the injection head is provided with a retaining ring, the fastening element engaging with the retaining ring; and a spring is connected to the outer side of the fastening element.
[0006] Preferably, the preheating component includes a preheating heater, a heating wire is connected to the side of the preheating heater, and an insulation shell is installed on the outside of the heating wire. The heating component includes a heater, heating tubes are connected to both ends of the heater, and an insulation sleeve is provided on the outside of the heating tubes.
[0007] Preferably, a rotating shaft is installed inside the injection tube, an auger is provided on the outside of the rotating shaft, and a motor is installed at the other end of the injection tube.
[0008] Preferably, the top of the injection tube is connected to a feed hopper, and the heating wire is disposed on the outside of the feed hopper.
[0009] Preferably, a support frame is provided on the outside of the injection tube, and the heat insulation sleeve is fitted on the outside of the injection tube.
[0010] Preferably, the mold assembly further includes mold one and mold two. Mold one has multiple guide rods distributed on its side, one end of each guide rod passing through mold two. A cylinder is installed between mold one and mold two. The feed pipe is located on the side of mold two.
[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0012] 1. In this utility model, one end of the injection head is inserted into the inside of the feed tube. The sealing ring helps to provide a sealing effect and prevents leakage of the injection liquid. When the injection head is inserted, the rotating seat is used to make the snap fastener and the snap ring engage. The spring helps to provide support for the snap fastener, ensuring the stability and reliability of the snap fastener engagement. The operation is convenient and quick, and it is convenient to separate the mold assembly from the injection head, thereby facilitating the maintenance and replacement of the mold assembly. It eliminates the need to disassemble a large number of bolts, reduces installation and disassembly time, reduces equipment downtime, and improves work efficiency.
[0013] 2. In this utility model, the preheating heater, in conjunction with the heating wire, effectively heats the feed hopper pipe, thereby preheating the injection molding liquid. This reduces the viscosity of the injection molding liquid, enhancing its fluidity. The electric motor drives the rotating shaft, which in turn facilitates the conveying and pushing of the injection molding liquid by the auger, allowing it to flow out of the injection head. During the outflow process, the heater, in conjunction with the heating tube, further heats the injection molding liquid, further reducing its viscosity. This ensures that the injection molding liquid fully fills both mold two and mold one, reducing product defects caused by insufficient flow. Simultaneously, the heating process ensures excellent fluidity of the injection molding liquid, shortening the injection time and improving work efficiency. The insulation shell and insulation sleeve provide insulation. Attached Figure Description
[0014] Figure 1 This utility model provides a three-dimensional structural diagram of the injection device of an injection molding machine;
[0015] Figure 2 This utility model provides a schematic diagram of the injection device of an injection molding machine from another angle.
[0016] Figure 3 This utility model provides a partial cross-sectional structural diagram of the injection device of an injection molding machine;
[0017] Figure 4This utility model provides a partial structural schematic diagram of the injection device of an injection molding machine;
[0018] Figure 5 This utility model presents a partial structural schematic diagram of the injection device of an injection molding machine.
[0019] Legend: 1. Injection Molding Components; 101. Injection Tube; 102. Rotating Shaft; 103. Screwdriver; 104. Motor; 105. Feed Hopper; 106. Support Frame; 107. Injection Head; 2. Preheating Components; 201. Preheater; 202. Heating Wire; 203. Insulation Shell; 3. Heating Components; 301. Heater; 302. Heating Tube; 303. Insulation Sleeve; 4. Mounting Components; 401. Fastener; 402. Rotating Seat; 403. Snap Ring; 404. Spring; 5. Mold Components; 501. Mold One; 502. Guide Rod; 503. Mold Two; 504. Cylinder; 505. Feed Tube; 506. Sealing Ring. Detailed Implementation
[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0022] Example 1: As Figures 1-5 As shown, this utility model provides a technical solution: an injection molding device for an injection molding machine, including an injection molding assembly 1 and a mold assembly 5. The injection molding assembly 1 is equipped with a preheating assembly 2 and a heating assembly 3. The mold assembly 5 has a mounting assembly 4 on its side. The injection molding assembly 1 includes an injection tube 101, one end of which is connected to an injection head 107. The mold assembly 5 includes a feed tube 505, the surface of which is provided with a sealing ring 506. The mounting assembly 4 includes multiple rotating seats 402. A snap fastener 401 is connected to the outside of the injection head 107, and a retaining ring 403 is provided on the outside of the injection head 107. The snap fastener 401 and the retaining ring 403 are engaged. A spring 404 is connected to the outside of the snap fastener 401. The mold assembly 5 also includes a first mold 501 and a second mold 503. Multiple guide rods 502 are distributed on the side of the first mold 501. One end of the guide rod 502 passes through the second mold 503. A cylinder 504 is installed between the first mold 501 and the second mold 503. The feed pipe 505 is provided on the side of the second mold 503.
[0023] In this embodiment, one end of the injection head 107 is inserted into the inside of the feed tube 505. The sealing ring 506 provides a sealing effect, preventing leakage of the injection molding liquid. Simultaneously with the insertion of the injection head 107, the rotating seat 402 engages the locking member 401 with the retaining ring 403. The spring 404 provides support for the locking member 401, ensuring the stability and reliability of the locking member 401. The operation is convenient and quick, facilitating the separation of the mold assembly 5 from the injection head 107, thereby simplifying maintenance and replacement of the mold assembly 5 without requiring... The removal of a large number of bolts reduces installation and disassembly time, thereby reducing equipment downtime and improving work efficiency. By controlling the extension and retraction of cylinder 504, it is beneficial to overlap and separate mold 1 501 and mold 2 503, which facilitates product injection molding. Guide rod 502 helps to achieve the guiding function. By fixing mold 2 503 to the base plate and movably mounting mold 1 501 on the base plate, it is convenient to move mold 1 501 toward mold 2 503 by controlling the extension and retraction of cylinder 504, which facilitates injection molding.
[0024] Example 2: As Figures 1-5 As shown, the preheating component 2 includes a preheating heater 201, a heating wire 202 connected to the side of the preheating heater 201, and an insulation shell 203 installed on the outside of the heating wire 202. The heating component 3 includes a heater 301, heating tubes 302 connected to both ends of the heater 301, and an insulation sleeve 303 provided on the outside of the heating tubes 302. A rotating shaft 102 is installed inside the injection tube 101, and an auger 103 is provided on the outside of the rotating shaft 102. A motor 104 is installed at the other end of the injection tube 101. A feed hopper 105 is connected to the top of the injection tube 101. The heating wire 202 is located on the outside of the feed hopper 105. A support frame 106 is provided on the outside of the injection tube 101. The insulation sleeve 303 is fitted on the outside of the injection tube 101.
[0025] In this embodiment, the feed hopper 105 facilitates the entry of the injection tube 101 into the injection pipe. The preheating heater 201, in conjunction with the heating wire 202, heats the feed hopper 105, thereby preheating the injection liquid and reducing its viscosity, thus enhancing its fluidity. The motor 104 drives the rotating shaft 102 to rotate, which in turn facilitates the conveying and pushing of the injection liquid by the auger 103, allowing the injection liquid to flow out of the injection head 107. During the outflow, the heater 301, in conjunction with the heating tube 302, further heats the injection liquid, further reducing its viscosity and ensuring that the injection liquid fully fills both mold 2 503 and mold 1 501, reducing product defects caused by insufficient flow. At the same time, heating ensures excellent fluidity of the injection liquid, shortening the injection time and improving work efficiency. The insulation shell 203 and insulation sleeve 303 provide insulation.
[0026] The working principle of this embodiment is as follows: In use, the injection molding liquid first enters the heating wire 202 through the feed hopper 105. The preheating heater 201 works in conjunction with the heating wire 202 to heat the feed hopper 105, thus preheating the injection molding liquid. The motor 104 electrically drives the rotating shaft 102 to rotate, which in turn facilitates the conveying and pushing of the injection molding liquid by the auger 103, allowing the injection molding liquid to flow out from the injection head 107. During the outflow, the heater 301, in conjunction with the heating tube 302, further heats the injection molding liquid, reducing its viscosity and ensuring that it fully fills both mold 2 503 and mold 1 501. This process is achieved by controlling the cylinder... The telescopic extension of 504 facilitates the overlap and separation of mold 1 501 and mold 2 503, thereby simplifying product injection molding. The guide rod 502 provides guidance. When maintenance or replacement of mold assembly 5 is required, one end of the injection head 107 is inserted into the feed tube 505. The sealing ring 506 provides a sealing effect. When the injection head 107 is inserted, the rotating seat 402 is used to engage the snap fastener 401 with the snap ring 403. The spring 404 provides support for the snap fastener 401, ensuring the stability and reliability of the snap fastener 401 engagement. This facilitates the separation of mold assembly 5 from injection head 107, thereby simplifying maintenance or replacement of mold assembly 5.
[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. An injection molding device for an injection molding machine, comprising an injection molding assembly (1) and a mold assembly (5), characterized in that: The injection molding assembly (1) is provided with a preheating assembly (2) and a heating assembly (3). The mold assembly (5) is provided with an installation assembly (4) on its side. The injection molding assembly (1) includes an injection tube (101), one end of which is connected to an injection head (107). The mold assembly (5) includes a feed tube (505), and a sealing ring (506) is provided on the surface of the feed tube (505). The installation assembly (4) includes multiple rotating seats (402), and a fastener (401) is connected to the outside of the rotating seat (402). A retaining ring (403) is provided on the outside of the injection head (107). The fastener (401) and the retaining ring (403) are engaged. A spring (404) is connected to the outside of the fastener (401).
2. The injection molding device of the injection molding machine according to claim 1, characterized in that: The preheating component (2) includes a preheating heater (201), a heating wire (202) is connected to the side of the preheating heater (201), and an insulation shell (203) is installed on the outside of the heating wire (202). The heating component (3) includes a heater (301), a heating tube (302) is connected to both ends of the heater (301), and an insulation sleeve (303) is provided on the outside of the heating tube (302).
3. The injection molding device of the injection molding machine according to claim 1, characterized in that: The injection tube (101) has a rotating shaft (102) installed inside, and an auger (103) is provided on the outside of the rotating shaft (102). The other end of the injection tube (101) is equipped with a motor (104).
4. The injection molding device of the injection molding machine according to claim 2, characterized in that: The top of the injection tube (101) is connected to a feed hopper (105), and the heating wire (202) is disposed on the outside of the feed hopper (105).
5. The injection molding device of the injection molding machine according to claim 2, characterized in that: A support frame (106) is provided on the outside of the injection tube (101), and the heat insulation sleeve (303) is sleeved on the outside of the injection tube (101).
6. The injection molding device of the injection molding machine according to claim 1, characterized in that: The mold assembly (5) further includes a first mold (501) and a second mold (503). The first mold (501) has multiple guide rods (502) distributed on its side. One end of each guide rod (502) passes through the second mold (503). A cylinder (504) is installed between the first mold (501) and the second mold (503). The feed pipe (505) is located on the side of the second mold (503).