Injection molding magnetic product whole circle feeding mechanism

Abstract

The utility model relates to the technical field of plastic magnetic product forming, and discloses an injection molding magnetic product whole circle feeding mechanism which comprises a base, a first mold frame is arranged at the upper end of the base, a second mold frame is installed at the upper end of the first mold frame in a spliced mode, and reinforcing bolts are installed on the left side and the right side of the outer end of the second mold frame in a threaded mode. And a main runner is formed in the middle of the upper end of the second mold frame, a feeding assembly is installed at the lower end of the second mold frame through a bolt, and a first ejector pin is installed on the inner side of the upper end of the base in a sleeving mode. According to the utility model, the annular sub-runner is arranged at the lower end of the ring feeding handle, the mounting angle of the annular sub-runner is consistent with the mounting angle of the discharge hole of the extrusion disc, annular multi-point feeding can be simultaneously realized during feeding, the feeding hole is thin and wide, and raw materials can quickly enter the inner side cavity of the forming ring during filling due to the fact that the annular sub-runner is downwards provided with the 45-degree sharp corner, so that the forming ring is more uniform in feeding. And after being completely formed, the product is firmer, and the overall orientation consistency is better.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic magnetic product molding, in particular to a full circle feeding mechanism for injection molded magnetic products. Background Art

[0002] Plastic magnets are functional composite materials made by adding magnetic particles to a plastic matrix through a specialized process. These materials combine the lightweight and easy-to-process characteristics of plastic with the unique properties of magnetic materials, such as the ability to generate magnetic fields and possess magnetic permeability. They are widely used in electronics, communications, computers, automotive, aerospace, and other fields.

[0003] Currently, during the injection molding of injection-molded magnetic products, difficult and uneven glue feeding are common problems. To ensure stable feeding of plastic magnetic products, typical processing plants increase the injection pressure and temperature. However, increasing the injection pressure can cause deformation, surface scratches, and flash in the plastic magnetic products. Furthermore, increasing the temperature can also cause mechanical thermal deformation, reduce oil viscosity, deform rubber seals, accelerate oil oxidation and deterioration, and lead to poor component performance. Therefore, a new full-circle feeding mechanism for injection-molded magnetic products is needed to address these issues. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies of the existing technology, the utility model provides a full circle feeding mechanism for injection molded magnetic products, which solves the existing problems of difficult and uneven glue feeding during injection molding of injection molded magnetic products, and the need to increase injection pressure and temperature.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a full circle feeding mechanism for injection molded magnetic products, including a base, a first mold frame is provided at the upper end of the base, a second mold frame is spliced ​​and installed on the upper end of the first mold frame, reinforcement bolts are threadedly installed on the left and right sides of the outer end of the second mold frame, a main channel is opened in the middle of the upper end of the second mold frame, a feeding assembly is bolted to the lower end of the second mold frame, a first ejector is sleeved and installed on the inner side of the upper end of the base, a second ejector is provided on the left and right sides of the first ejector, and an ejector rod is provided on the outer side of the upper end of the second ejector.

[0008] Optionally, the first mold frame includes a forming mold, a splicing groove, a forming ring and a positioning hole. The inner side of the upper end of the forming mold is provided with a splicing groove, the four corners of the upper end of the splicing groove are provided with forming rings, and the inner side of the splicing groove is provided with a positioning hole.

[0009] Optionally, the second mold frame includes a pressing mold, a docking mold, a positioning column and an extrusion disk. The lower end of the pressing mold is bolted with the docking mold, the inner side of the lower end of the docking mold is provided with a positioning column, and the inner four corners of the lower end of the docking mold are provided with an extrusion disk.

[0010] Optionally, the feeding assembly includes a splicing plate, a ring feeding handle, a plastic magnetic ring, and a through hole. The lower end of the splicing plate is provided with a ring feeding handle, the inner side of the ring feeding handle is provided with a plastic magnetic ring, and the inner side of the lower end of the splicing plate is provided with a through hole.

[0011] Optionally, there are four reinforcing bolts symmetrically distributed, with two on each side. The interior of the second mold frame is a hollow structure, and the hollow structure inside the second mold frame is interconnected with the main channel.

[0012] Optionally, four first ejector pins are symmetrically distributed, and the second ejector pins are symmetrically distributed at four corners outside the first ejector pin, and the ejector rods are symmetrically distributed bilaterally.

[0013] Optionally, the positioning posts are symmetrically distributed, with two positioning posts symmetrically distributed front to back, four positioning posts symmetrically distributed left to right, and four extrusion discs symmetrically distributed.

[0014] Optionally, the ring feeding handle is composed of a main feeding rod and four discharge rings, and a branch channel is distributed in a ring shape on the inner side of the lower end of the discharge ring.

[0015] In summary, the technical effects and advantages of the utility model are:

[0016] 1. The utility model has a reasonable structure. By setting the annular diverter channel at the lower end of the ring feed handle, the installation angle of the annular diverter channel is consistent with the discharge port of the extrusion disk. During feeding, annular multi-point feeding can be realized simultaneously, and the feed port is thin and wide. Moreover, since the annular diverter channel is pointed downward at a 45-degree angle, the raw material can quickly enter the inner cavity of the forming ring during filling. After being fully formed, it will be stronger and the overall orientation consistency will be better.

[0017] 2. In the present invention, by providing the first ejector pin and the second ejector pin, the formed plastic magnetic ring can be quickly separated from the forming mold when the second mold frame is separated from the first mold frame. In addition, the ejector pin installed on the outside of the second ejector pin will also eject the plastic magnetic product from the forming ring at the same time as the plastic magnetic product is separated from the forming mold, so that the product can be quickly taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the planar structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the first mold frame of the utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the second mold frame and feeding assembly of the utility model;

[0022] Figure 5 This is a schematic diagram of the three-dimensional separation structure of the feed component of the utility model;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the ring feed handle of the utility model when viewed from above.

[0024] In the figure: 1. Base; 2. First mold frame; 3. Second mold frame; 4. Reinforcement bolt; 5. Main channel; 6. Feed assembly; 7. First ejector pin; 8. Second ejector pin; 9. Ejector rod; 201. Forming mold; 202. Splicing groove; 203. Forming ring; 204. Positioning hole; 301. Pressing mold; 302. Docking mold; 303. Positioning column; 304. Extrusion disk; 601. Splicing plate; 602. Ring feed handle; 603. Plastic magnetic ring; 604. Perforation. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example: Reference Figures 1 to 6 The full circle feeding mechanism of the injection molded magnetic product shown includes a base 1, a first mold frame 2 is provided at the upper end of the base 1, and a second mold frame 3 is spliced ​​and installed on the upper end of the first mold frame 2. The interior of the second mold frame 3 is a hollow structure, and reinforcing bolts 4 are threadedly installed on the left and right sides of the outer end of the second mold frame 3. There are four reinforcing bolts 4 symmetrically distributed, and two are distributed on each side. A main channel 5 is opened in the middle of the upper end of the second mold frame 3. The hollow structure inside the second mold frame 3 is connected to the main channel 5. A feeding assembly 6 is bolted to the lower end of the second mold frame 3, and a first ejector pin 7 is sleeved and installed on the inner side of the upper end of the base 1. There are four first ejector pins 7 symmetrically distributed. Second ejector pins 8 are provided on the left and right sides of the first ejector pin 7, and the second ejector pins 8 are symmetrically distributed at the four corners outside the first ejector pin 7. An ejector rod 9 is provided on the outer side of the upper end of the second ejector pin 8, and the ejector rods 9 are symmetrically distributed on the left and right.

[0027] The second mold frame 3 is connected to the first mold frame 2 by the arrangement, and the raw material is injected into the lower pressing mold 301 inside the second mold frame 3 through the main channel 5, and is discharged from the inner annular outlet of the extrusion plate 304 through the internal channel, enters the feeding assembly 6, and enters the forming ring 203 at the upper end of the first mold frame 2 from the annular branch channel at the lower end of the ring feeding handle 602. Moreover, since the annular branch channel is at a 45-degree downward angle, annular multi-point feeding can be achieved simultaneously during feeding, so that the raw material can quickly fill the inner cavity of the forming ring 203, etc. After the complete molding is produced, it will be stronger and the overall orientation consistency will be better. After the molding is completed, the second mold frame 3 is separated from the first mold frame 2, and then the first ejector pin 7 at the lower end starts to work, driving the second ejector pin 8 to move upward synchronously, and quickly separating the molded plastic magnetic ring 603 from the molding mold 201. In addition, the ejector pin 9 installed on the outside of the second ejector pin 8 will also eject the plastic magnetic ring 603 from the molding ring 203 at the same time as the plastic magnetic ring 603 is separated from the molding mold 201, so that the product can be quickly taken out.

[0028] As an optional implementation in this embodiment, Figure 3 and Figure 4 As shown, the first mold frame 2 includes a forming mold 201, a splicing groove 202, a forming ring 203 and a positioning hole 204. The inner side of the upper end of the forming mold 201 is provided with a splicing groove 202, and the four corners of the upper end of the splicing groove 202 are provided with forming rings 203, and the inner side of the splicing groove 202 is provided with a positioning hole 204; the second mold frame 3 includes a pressing mold 301, a docking mold 302, a positioning column 303 and an extrusion disk 304. The lower end bolt of the pressing mold 301 is installed with the docking mold 302, and the inner side of the lower end of the docking mold 302 is provided with a positioning column 303. The positioning columns 303 are symmetrically distributed. There are two positioning columns 303 symmetrically distributed front and back, and four positioning columns 303 symmetrically distributed left and right. The four inner corners of the lower end of the docking mold 302 are provided with an extrusion disk 304, and there are four extrusion disks 304 symmetrically distributed.

[0029] The positioning column 303 is arranged to have the same angle as the positioning hole 204 opened at the upper end of the lower forming mold 201, which makes the extrusion molding faster. At the same time, the annular discharge hole opened at the lower end of the extrusion disk 304 allows it to realize annular multi-point feeding when injecting raw materials into the inside of the forming ring 203, ensuring that the raw materials can quickly fill the inner cavity of the forming ring 203 and improve the consistency of the product.

[0030] like Figure 4 、 Figure 5 and Figure 6As shown, in this embodiment, the feeding assembly 6 includes a splicing plate 601, a ring feeding handle 602, a plastic magnetic ring 603, and a through-hole 604. The lower end of the splicing plate 601 is provided with a ring feeding handle 602. The ring feeding handle 602 is composed of a main feeding rod and four discharge rings. A diversion channel is distributed in an annular manner on the inner side of the lower end of the discharge ring. The annularly distributed diversion channel is downwardly pointed at a 45-degree angle. The discharge port of the diversion channel is consistent with the discharge port angle of the extrusion disk 304. A plastic magnetic ring 603 is extruded on the inner side of the ring feeding handle 602. A through-hole 604 is provided on the inner side of the lower end of the splicing plate 601. The design of the through-hole 604 facilitates the subsequent disassembly of the splicing plate 601.

[0031] Working principle of this utility model: the whole circle feeding mechanism of the injection molding magnetic product is connected with the first mold frame 2 by the second mold frame 3, and the raw material is injected into the lower pressure mold 301 inside the second mold frame 3 through the main channel 5, and is discharged from the inner annular outlet of the extrusion disk 304 through the internal channel, and enters the feeding component 6, and enters the molding ring 203 at the upper end of the first mold frame 2 from the annular branch channel at the lower end of the ring feeding handle 602. Moreover, since the annular branch channel is at a 45-degree sharp angle downward, multi-point feeding can be realized at the same time during feeding, so that the raw material can be quickly filled and formed. The inner cavity of the ring 203 will be stronger and have better overall orientation consistency after it is fully formed. After the molding is completed, the second mold frame 3 is separated from the first mold frame 2, and then the first ejector pin 7 at the lower end starts to work, driving the second ejector pin 8 to move upward synchronously, and quickly separate the molded plastic magnetic ring 603 from the molding mold 201. In addition, the ejector pin 9 installed on the outside of the second ejector pin 8 will also eject the plastic magnetic ring 603 from the molding ring 203 at the same time as the plastic magnetic ring 603 is separated from the molding mold 201, so that the product can be quickly taken out.

[0032] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device that performs control such as a computer.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A full circle feeding mechanism for injection molded magnetic products, comprising a base (1), characterized in that: The upper end of the base (1) is provided with a first mold frame (2), the upper end of the first mold frame (2) is spliced ​​with a second mold frame (3), the left and right sides of the outer end of the second mold frame (3) are threadedly installed with reinforcing bolts (4), the middle part of the upper end of the second mold frame (3) is provided with a main flow channel (5), the lower end of the second mold frame (3) is bolted with a feed assembly (6), the inner side of the upper end of the base (1) is sleeved with a first ejector pin (7), the left and right sides of the first ejector pin (7) are provided with a second ejector pin (8), and the outer side of the upper end of the second ejector pin (8) is provided with an ejector rod (9).

2. The full circle feeding mechanism for injection molded magnetic products according to claim 1, characterized in that: The first mold frame (2) comprises a forming mold (201), a splicing groove (202), a forming ring (203) and a positioning hole (204); the splicing groove (202) is provided on the inner side of the upper end of the forming mold (201); the forming rings (203) are provided at the four corners of the upper end of the splicing groove (202); and the positioning hole (204) is provided on the inner side of the splicing groove (202).

3. The full circle feeding mechanism for injection molded magnetic products according to claim 1, characterized in that: The second mold frame (3) comprises a pressing mold (301), a docking mold (302), a positioning column (303) and an extrusion disk (304); the lower end of the pressing mold (301) is bolted with the docking mold (302); the inner side of the lower end of the docking mold (302) is provided with a positioning column (303); and the four inner corners of the lower end of the docking mold (302) are provided with an extrusion disk (304).

4. The full circle feeding mechanism for injection molded magnetic products according to claim 1, characterized in that: The feeding assembly (6) comprises a splicing plate (601), a ring feeding handle (602), a plastic magnetic product (603), and a perforation (604). The lower end of the splicing plate (601) is provided with a ring feeding handle (602), the inner side of the ring feeding handle (602) is provided with a plastic magnetic product (603), and the inner side of the lower end of the splicing plate (601) is provided with a perforation (604).

5. The full circle feeding mechanism for injection molded magnetic products according to claim 1, characterized in that: The reinforcing bolts (4) are symmetrically distributed in four pieces, with two on each side. The interior of the second mold frame (3) is a hollow structure, and the hollow structure inside the second mold frame (3) is interconnected with the main channel (5).

6. The full circle feeding mechanism for injection molded magnetic products according to claim 1, characterized in that: Four first ejector pins (7) are symmetrically distributed, and the second ejector pins (8) are symmetrically distributed at the four corners outside the first ejector pin (7). The ejector rods (9) are symmetrically distributed on the left and right.

7. The full circle feeding mechanism for injection molded magnetic products according to claim 3, characterized in that: The positioning posts (303) are symmetrically distributed. There are two positioning posts (303) symmetrically distributed front to back, four positioning posts (303) symmetrically distributed left to right, and four squeezing discs (304) symmetrically distributed.

8. The full circle feeding mechanism for injection molded magnetic products according to claim 4, characterized in that: The ring feeding handle (602) is composed of a main feeding rod and four discharge rings, and a branch channel is distributed in an annular manner on the inner side of the lower end of the discharge ring.

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