Injection mold

Abstract

The injection mold comprises a front mold, a rear mold, a water gap plate, a supporting plate and mold feet, the front mold is provided with a front mold core, the rear mold is located on the lower side of the front mold and matched with the front mold, a rear mold core is arranged in the rear mold and matched with the front mold core, the water gap plate is arranged above the front mold and provided with a guide column, the guide column penetrates through the front mold and the rear mold downwards, and the supporting plate is arranged on the front mold. A runner and a runner insert are arranged on the lower side of the stripper plate, the runner insert is arranged in the front mold, the runner penetrates through the runner insert to extend into the front mold core and the rear mold core, a panel is arranged above the stripper plate, the supporting plate is arranged below the rear mold and is close to the bottom of the rear mold, the mold foot is arranged on the lower side of the supporting plate, a vertical rod is arranged on the mold foot, and the vertical rod penetrates through the supporting plate and the rear mold upwards. A threaded spring is arranged on the vertical rod, a butterfly-shaped elastic piece insert is further arranged between the mold foot and the supporting plate, at least one butterfly-shaped elastic piece is arranged on the butterfly-shaped elastic piece insert, and a bottom plate is arranged on the lower side of the mold foot. The injection mold has the advantages of reducing the pressure borne by an injection product, increasing the product yield and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to an injection mold. Background Art

[0002] Silicon steel sheets are soft magnetic materials with good magnetic conductivity. During the operation of the motor, silicon steel sheets can provide sufficient magnetic flux to make the rotor magnetic circuit have good magnetic characteristics. The resistivity of silicon steel sheets is relatively large, so the eddy current loss generated is also small, which can reduce the temperature rise of the motor and improve the efficiency and reliability of the motor. Therefore, silicon steel sheets are widely used in the field of motor rotors, but the large tolerance of silicon steel sheets is a hard flaw. Large tolerances will cause glue overflow during injection molding. Although increasing pre-pressure can improve glue overflow, the huge pressure of the injection molding machine will cause the silicon steel sheet to deform and affect performance. Compared with the injection pressure during the injection molding process, the spiral spring structure does not work at all. Therefore, it is particularly important to improve the injection mold so that similar silicon steel sheet products can withstand less pressure during the injection molding process. Utility Model Content

[0003] In order to solve the deficiencies in the prior art, the utility model provides an injection mold which reduces the pressure of injection molded products and increases the product yield.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] Injection mold, including:

[0006] A front mold, provided with a front mold core;

[0007] The rear mold is located at the lower side of the front mold and is matched with the front mold. The rear mold is provided with a rear mold core and the rear mold core is matched with the front mold core;

[0008] A sprue plate is arranged above the front mold and is provided with guide pillars, which pass through the front mold and the rear mold downwards; a flow channel and a flow channel insert are arranged at the lower side of the sprue plate; the flow channel passes through the flow channel insert and extends into the front mold core and the rear mold core; a panel is provided above the sprue plate;

[0009] A support plate is disposed below the rear mold and close to the bottom of the rear mold; and

[0010] The mold foot is arranged on the lower side of the support plate and is provided with a vertical rod, which passes through the support plate and the rear mold upward. A threaded spring is provided on the vertical rod. A butterfly spring insert is also provided between the mold foot and the support plate. At least one butterfly spring is provided on the butterfly spring insert. A bottom plate is provided on the lower side of the mold foot.

[0011] Preferably, a heat insulation board is respectively provided on the upper side of the panel and the lower side of the base plate.

[0012] Preferably, a locking module is provided between the outer wall of the front mold and the outer wall of the rear mold.

[0013] By adopting the above technical solution, the utility model has the following beneficial effects:

[0014] The injection mold of the utility model is not only provided with a threaded spring between the support plate and the mold foot, but also provided with a butterfly spring insert and at least one butterfly spring is provided on the butterfly spring insert. The arrangement of the threaded spring and the butterfly spring can reduce the pressure of the injection molded product between the front mold and the rear mold, thereby increasing the overall reliability and stability, preventing the injection molded product from being deformed, and increasing the product yield.

[0015] In summary, the utility model has the advantages of reducing the pressure of injection molded products and increasing product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 yes Figure 1 The schematic diagram of the structure without the butterfly spring insert;

[0018] Figure 3 yes Figure 1 The main view;

[0019] Figure 4 yes Figure 3 Section view along the AA direction. DETAILED DESCRIPTION

[0020] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0022] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example 1

[0026] In this embodiment, an injection mold is proposed in this embodiment to reduce the pressure on the injection molded product, so that the injection molded product is not easy to deform, the overall reliability and stability, and the product yield is high.

[0027] like Figure 1-4 As shown, in one embodiment of the utility model, the injection mold of the utility model includes a front mold 1, a rear mold 2, a nozzle plate 3, a support plate 4 and a mold foot 5, the front mold 1 is provided with a front mold core, the rear mold 2 is located at the lower side of the front mold 1 and is adapted to the front mold 1, the rear mold core is provided in the rear mold 2 and the rear mold core is adapted to the front mold core, the nozzle plate 3 is arranged above the front mold 1 and a guide column is provided on the nozzle plate 3, the guide column passes downward through the front mold 1 and the rear mold 2, the lower side of the nozzle plate 3 is provided with a flow channel and a flow channel insert, the flow channel insert is arranged in the front mold 1, the flow channel passes through the flow channel insert and extends into the front mold core and the rear mold core, a panel 6 is provided above the nozzle plate 3, and a heat insulation board is provided on the upper side of the panel 6 7, a nozzle 8 is provided in the middle of the panel 6 and the nozzle 8 passes through the heat insulation board 7 upward, the nozzle 8 is connected to the flow channel, the support plate 4 is arranged below the rear mold 2 and is arranged close to the bottom of the rear mold 2, the mold foot 5 is arranged on the lower side of the support plate 4 and a vertical rod 9 is provided on the mold foot 5, the vertical rod 9 passes through the support plate 4 and the rear mold 2 upward, a threaded spring 10 is provided on the vertical rod 9, a butterfly spring insert 11 is also provided between the mold foot 5 and the support plate 4, at least one butterfly spring 12 is provided on the butterfly spring insert 11, a bottom plate 13 is provided on the lower side of the mold foot 5, and a heat insulation board 7 is provided on the lower side of the bottom plate 13, and a locking module 16 is provided between the outer wall of the front mold 1 and the outer wall of the rear mold 2 of the utility model;

[0028] When the threaded spring 10 receives impact force, the elastic force can be used to slow down or eliminate vibration and impact. However, in the present invention, the threaded spring 10 cannot meet this requirement. The present invention is provided with additional butterfly spring pieces 12, inserts 11 and butterfly spring pieces 12, which can sufficiently reduce the injection pressure during the injection molding process, reduce the pressure on the injection molded product, and increase the product yield.

[0029] Please continue to refer to Figure 1-4 In the present invention, a pin base plate 14 is provided in the mold foot 5, a pin plate 15 is provided on the pin base plate 14, a pin is provided on the pin plate 15, and the pin passes through the butterfly spring piece 12, the insert 11 and the support plate 4 and extends into the rear mold 2. The lower end of the vertical plate is specifically located on the pin plate 15, and the butterfly spring piece 12 insert 11 is specifically located between the pin plate 15 and the support plate 4. The butterfly spring piece 12 can be provided with one or more according to the needs, and its specific arrangement order can be installed in the same direction or in the opposite direction. The overall structure of the injection mold of the present invention is the same or similar to the existing injection mold structure, but the present invention is provided with a butterfly spring piece 12 insert 11 and The butterfly spring 12 structure is specifically used, and the upper side of the utility model is connected to the injection molding machine, and then the injection molded product, such as silicon steel sheet, is placed in the mold core of the rear mold 2, and then the injection molding machine is turned on. The injection molding machine injects the injection plastic into the nozzle 8 and drives the front mold 1 to press down, the front mold 1 and the rear mold 2 are molded together, the locking module 16 is locked, and then the nozzle 8 injects the injection plastic into the flow channel and finally injects it into the front mold core and the rear mold core. During the mold closing process of the front mold 1 and the rear mold 2, the injection molded products such as silicon steel sheets are impacted, and the threaded spring 10 and the butterfly spring 12 will be stressed together to reduce the impact and reduce the risk of deformation of the silicon steel sheet. Then the utility model is normally injected.

[0030] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. Injection mold, characterized by ,include: A front mold, provided with a front mold core; The rear mold is located at the lower side of the front mold and is matched with the front mold. The rear mold is provided with a rear mold core and the rear mold core is matched with the front mold core; A sprue plate is arranged above the front mold and is provided with guide pillars, which pass downward through the front mold and the rear mold. A flow channel and a flow channel insert are arranged at the lower side of the sprue plate. The flow channel insert is arranged in the front mold. The flow channel passes through the flow channel insert and extends into the front mold core and the rear mold core. A panel is provided above the sprue plate. A support plate is disposed below the rear mold and close to the bottom of the rear mold; and The mold foot is arranged on the lower side of the support plate and is provided with a vertical rod, which passes through the support plate and the rear mold upward. A threaded spring is provided on the vertical rod. A butterfly spring insert is also provided between the mold foot and the support plate. At least one butterfly spring is provided on the butterfly spring insert. A bottom plate is provided on the lower side of the mold foot.

2. The injection mold according to claim 1, characterized in that: A heat insulation board is respectively provided on the upper side of the panel and the lower side of the bottom plate.

3. The injection mold according to claim 1, characterized in that: A locking module is arranged between the outer wall of the front mold and the outer wall of the rear mold.

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