Injection mold for plastic magnetic rotor

Abstract

The utility model discloses an injection mold for a plastic magnetic rotor, and relates to the technical field of plastic magnetic rotor molds. The device comprises a base, a lower module is arranged on the base, and an auxiliary assembly is arranged in the lower module and the base. The auxiliary assembly comprises a sliding groove formed in the base, a first threaded rod rotationally matched with the interior of the sliding groove, a U-shaped frame slidably matched with the interior of the sliding groove, two arc-shaped ejector blocks arranged on the U-shaped frame, and an arc-shaped groove formed in the bottom of the inner wall of the lower module. According to the utility model, the upper module moves upwards to be gradually away from the lower module, the molded plastic magnetic rotor is exposed, and then the first threaded rod is rotated to drive the two arc-shaped top blocks on the U-shaped frame to slide upwards in the arc-shaped grooves, so that the arc-shaped top blocks simultaneously push the plastic magnetic rotor in the lower module upwards; and the molded plastic magnetic rotor can be conveniently ejected out, so that the damage condition is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of plastic magnetic rotor molds, specifically, it relates to an injection mold for plastic magnetic rotors. Background Technology

[0002] Plastic magnetic rings are magnetic rings made of plastic. They typically have high magnetic permeability and low coercivity, and are often used to suppress electromagnetic interference. In the injection molding process of magnetic ring production, a mold needs to be designed and manufactured according to the shape and size of the plastic magnetic ring. Then, plastic with high magnetic permeability is injected into the mold and kept under certain temperature and pressure for a period of time to allow the plastic to solidify.

[0003] Chinese Patent CN221496993U discloses an injection mold for producing plastic magnetic rings, relating to the field of injection mold technology. It addresses the problem in existing technologies where a large temperature difference between the molten high-permeability plastic and the mold during injection molding reduces the fluidity of the high-permeability plastic, preventing complete mold filling and affecting quality. The injection mold for producing plastic magnetic rings includes a lower fixed plate and an upper fixed plate, which are fixedly connected by connecting columns. A lower module is mounted on the lower fixed plate, with heat exchange tubes rotatably mounted on both its inner and outer layers. An upper module is correspondingly mounted above the lower module, and a sliding plate is connected to the upper end of the upper module. A first cylinder is connected to the upper fixed plate, pushing the sliding plate downwards. The beneficial effect is that it promotes the fluidity of the molten high-permeability plastic within the lower module, thereby filling the mold and ensuring uniform distribution of magnetic material within the plastic magnetic ring.

[0004] In practical use, the existing technology described above uses the upper and lower modules to form magnetic plastic. However, the formed magnetic plastic needs to be removed by an external object. Since the formed magnetic plastic is tightly attached to the lower mold, defects and damage to the surface of the formed magnetic plastic are likely to occur when the external object is removed. Therefore, an injection mold for plastic magnetic rotor is needed.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an injection mold for plastic magnetic rotors.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0008] An injection mold for a plastic magnetic rotor includes a base, a lower module mounted on the base, an upper module slidably fitted on the base, the upper module and the lower module cooperating, and auxiliary components arranged inside the lower module and the base.

[0009] The auxiliary components include a slide groove inside the base, a first threaded rod rotatably engaged inside the slide groove, a U-shaped frame slidably engaged inside the slide groove, two arc-shaped top blocks mounted on the U-shaped frame, and an arc-shaped groove at the bottom of the inner wall of the lower module. The arc-shaped groove is connected to the slide groove, the arc-shaped top blocks are slidably engaged inside the arc-shaped groove, and the first threaded rod is threadedly engaged with the U-shaped frame.

[0010] Optionally, a motor is installed at the bottom of the inner wall of the chute, and one end of the first threaded rod is installed on the output end of the motor.

[0011] Optionally, a first threaded groove is provided on one side of the U-shaped frame, and the first threaded rod is threaded into the inside of the first threaded groove.

[0012] Optionally, the lower module has grooves on opposite sides, and a top post is slidably fitted inside the groove. The top post is fitted with the upper module, and a first through groove is provided on one side of the top post. A second threaded rod is rotatably fitted inside the first through groove. A second threaded groove is provided at the bottom of the inner wall of the groove, and the second threaded rod is threaded into the second threaded groove. A hexagonal groove is provided at one end of the second threaded rod.

[0013] Optionally, the base is equipped with two support rods, one end of which is equipped with a horizontal support plate. A cylinder is installed on the horizontal support plate, and the telescopic end of the cylinder passes through the horizontal support plate and is connected to the upper module. The upper module is equipped with a feed pipe, and second through slots are opened on opposite sides of the upper module. The support rods slide inside the second through slots. Springs are installed between the lower side of the upper module and the upper side of the base, and the springs are sleeved on the support rods.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0015] By moving the upper module upwards, it gradually moves away from the lower module, exposing the molded plastic magnetic rotor. Then, by rotating the first threaded rod, it drives the two arc-shaped top blocks on the U-shaped frame to slide upwards inside the arc-shaped groove. This causes the arc-shaped top blocks to simultaneously push the plastic magnetic rotor inside the lower module upwards, making it easier to eject the molded plastic magnetic rotor and thus reducing breakage.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0020] Figure 3 This is a top view of an embodiment of the present utility model.

[0021] Figure 4 This is a schematic diagram of the auxiliary component structure according to an embodiment of the present utility model;

[0022] The attached diagram lists the components represented by each number as follows:

[0023] Base 1, lower module 2, upper module 3, horizontal support plate 4, support rod 5, slide groove 6, second through groove 7, feed pipe 8, spring 9, cylinder 10, groove 11, second threaded groove 12, arc-shaped top block 13, U-shaped frame 14, first threaded groove 15, first threaded rod 16, motor 17, top column 18, first through groove 19, second threaded rod 20, hexagonal groove 21, arc-shaped groove 22.

[0024] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] Please see Figure 1-4 As shown, this embodiment provides an injection mold for a plastic magnetic rotor, including a base 1, a lower module 2 mounted on the base 1, an upper module 3 slidably fitted on the base 1, the upper module 3 cooperating with the lower module 2, and auxiliary components provided inside the lower module 2 and the base 1.

[0027] The auxiliary components include a groove 6 inside the base 1, a first threaded rod 16 rotatably engaged inside the groove 6, a U-shaped frame 14 slidably engaged inside the groove 6, two arc-shaped top blocks 13 mounted on the U-shaped frame 14, and an arc-shaped groove 22 at the bottom of the inner wall of the lower module 2. The arc-shaped groove 22 is connected to the groove 6, the arc-shaped top blocks 13 are slidably engaged inside the arc-shaped groove 22, and the first threaded rod 16 is threadedly engaged with the U-shaped frame 14.

[0028] One application of this embodiment is as follows: by rotating the first threaded rod 16, the first threaded rod 16 is threadedly engaged with the U-shaped frame 14, and the U-shaped frame 14 is slidably engaged inside the slide groove 6. The rotation of the first threaded rod 16 causes the U-shaped frame 14 to slide in the slide groove 6 along the axial direction of the first threaded rod 16. When the U-shaped frame 14 slides, the two arc-shaped top blocks 13 mounted on it also move accordingly. Because the arc-shaped top blocks 13 are slidably engaged in the arc-shaped groove 22 opened at the bottom of the inner wall of the lower module 2, the arc-shaped top blocks 13 will slide in the arc-shaped groove 22. By utilizing the arc-shaped structure of the arc-shaped top blocks 13, the plastic magnetic rotor located in the lower module 2 can be pushed out, which facilitates the ejection of the formed plastic magnetic rotor and thus reduces the damage.

[0029] In this embodiment, a motor 17 is installed at the bottom of the inner wall of the slide 6, and one end of the first threaded rod 16 is installed on the output end of the motor 17.

[0030] The operator controls the motor 17 installed at the bottom of the inner wall of the slide 6 to start. After the motor 17 starts, its output end begins to rotate. Since one end of the first threaded rod 16 is installed on the output end of the motor 17, the first threaded rod 16 will rotate synchronously with the output end of the motor 17, which facilitates the ejection of the formed plastic magnetic rotor. In addition, two fixing blocks are installed on opposite sides of the motor 17 to improve the overlap rate between the U-shaped frame 14 and the arc groove 22.

[0031] In this embodiment, a first threaded groove 15 is provided on one side of the U-shaped frame 14, and a first threaded rod 16 is threaded into the inside of the first threaded groove 15.

[0032] Since the first threaded groove 15 on one side of the U-shaped frame 14 is threadedly engaged with the first threaded rod 16, and the U-shaped frame 14 is slidably engaged in the slide groove 6, the rotation of the first threaded rod 16 will cause the U-shaped frame 14 to slide linearly in the slide groove 6 along the axial direction of the first threaded rod 16 according to the thread transmission principle, which facilitates the ejection of the plastic magnetic rotor from the lower module 2 and achieves demolding.

[0033] In this embodiment, the lower module 2 has grooves 11 on both sides. A top post 18 is slidably fitted inside the groove 11. The top post 18 is fitted with the upper module 3. A first through groove 19 is provided on one side of the top post 18. A second threaded rod 20 is rotatably fitted inside the first through groove 19. A second threaded groove 12 is provided at the bottom of the inner wall of the groove 11. The second threaded rod 20 is threadedly fitted inside the second threaded groove 12. A hexagonal groove 21 is provided at one end of the second threaded rod 20.

[0034] The operator inserts a flat-head hex wrench corresponding to the hexagonal groove 21 into the hexagonal groove 21, and then rotates the flat-head hex wrench to drive the second threaded rod 20 to rotate in the top post 18 and engage with the second threaded groove 12. This causes the second threaded rod 20 to rotate in the second threaded groove 12, while the top post 18 gradually moves upward as the second threaded rod 20 rotates, making it easier to adjust the engagement distance between the lower module 2 and the upper module 3.

[0035] In this embodiment, the base 1 is equipped with two support rods 5, one end of each support rod 5 is equipped with a transverse support plate 4, the transverse support plate 4 is equipped with a cylinder 10, and the telescopic end of the cylinder 10 passes through the transverse support plate 4 and is connected to the upper module 3; the upper module 3 is equipped with a feed pipe 8, and the upper module 3 has second through slots 7 on opposite sides, and the support rods 5 slide inside the second through slots 7; springs 9 are installed between the lower side of the upper module 3 and the upper side of the base 1, and the springs 9 are sleeved on the support rods 5.

[0036] Before injection molding begins, cylinder 10 is activated, its telescopic end extends, and pushes the upper module 3 connected to it to slide downward along the support rod 5. The support rod 5 slides into the second through groove 7 on the upper module 3, providing guidance for the movement of the upper module 3 and ensuring its accurate engagement with the lower module 2. During the downward movement of the upper module 3, the spring 9 sleeved on the support rod 5 is compressed. The spring 9 acts as a buffer and stabilizer, preventing a hard collision between the upper module 3 and the lower module 2, ensuring the smoothness of the mold closing process, and allowing the upper module 3 and the lower module 2 to fit tightly together, forming a complete plastic magnetic rotor molding cavity. Then, the material is injected into the cavity formed by the upper module 3 and the lower module 2 through the feed pipe 8 on the upper module 3. During the injection molding process, cylinder 10 maintains a certain pressure to keep the upper module 3 and the lower module 2 tightly engaged, preventing the leakage of plastic material, thus facilitating the molding process of the plastic magnetic rotor. The engagement of the upper module 3 and the lower module 2 can be released by reversing the above operations.

[0037] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. An injection mold for a plastic magnet rotor, characterized by The utility model relates to a base (1), be equipped with lower module (2) on base (1), the upper module (3) of sliding fit is equipped with on base (1), the upper module (3) is cooperated with lower module (2), and the inside of lower module (2) is provided with auxiliary assembly with base (1); The auxiliary assembly includes a sliding groove (6) formed in the interior of the base (1), a first threaded rod (16) rotatably fitted in the sliding groove (6), a U-shaped bracket (14) slidingly fitted in the sliding groove (6), two arc-shaped jacks (13) mounted on the U-shaped bracket (14), an arc-shaped groove (22) formed in the bottom of the inner wall of the lower module (2), the arc-shaped groove (22) being in communication with the sliding groove (6), the arc-shaped jacks (13) slidingly fitted in the interior of the arc-shaped groove (22), and the first threaded rod (16) being threadedly fitted with the U-shaped bracket (14). The inner wall bottom of the sliding groove (6) is provided with a motor (17), and one end of the first threaded rod (16) is mounted on the output end of the motor (17).

2. An injection mold for a plastic magnetic rotor as defined in claim 1, wherein, A first threaded groove (15) is formed in one side of the U-shaped bracket (14), and the first threaded rod (16) is threadedly fitted in the interior of the first threaded groove (15).

3. The injection mold for a plastic magnetic rotor of claim 1, wherein, The opposite sides of the lower module (2) are provided with recesses (11), and a top column (18) is slidingly fitted in the interior of the recess (11), the top column (18) being cooperated with the upper module (3), and a first through groove (19) is formed in one side of the top column (18).

4. The injection mold for a plastic magnetic rotor of claim 1, wherein, A second threaded rod (20) is rotatably fitted in the interior of the first through groove (19), a second threaded groove (12) is formed in the inner wall bottom of the recess (11), the second threaded rod (20) being threadedly fitted in the interior of the second threaded groove (12), and a hexagonal recess (21) is formed in one end of the second threaded rod (20).

5. An injection mold for a plastic magnetic rotor as defined in claim 4, wherein, Two support rods (5) are mounted on the base (1), and a transverse support plate (4) is mounted on one end of the two support rods (5), a pneumatic cylinder (10) is mounted on the transverse support plate (4), and the telescopic end of the pneumatic cylinder (10) penetrates through the transverse support plate (4) and is connected with the upper module (3).

6. The injection mold for a plastic magnetic rotor of claim 1, wherein, A feeding pipe (8) is mounted on the upper module (3), second through grooves (7) are formed in the opposite sides of the upper module (3), and the support rods (5) are slidingly fitted in the interiors of the second through grooves (7).

7. An injection mold for a plastic magnetic rotor as defined in claim 6, wherein, Springs (9) are mounted between the lower side of the upper module (3) and the upper side of the base (1), and the springs (9) are sleeved on the support rods (5).

8. An injection mold for a plastic magnetic rotor as defined in claim 7, wherein, ​

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