Die structure for motor suspension bracket

Abstract

The utility model relates to a die structure for a motor suspension support, and belongs to the technical field of automobile NVH part manufacturing. The mold comprises a front mold frame, a rear mold frame, a front mold core, a rear mold core and supporting columns, a bottom plate is arranged at the bottom of the rear mold frame, the supporting columns are arranged on the bottom plate and penetrate through the rear mold frame to abut against the bottom of the rear mold core, the strength of the rear mold core is improved, and the supporting columns are evenly distributed below a fork foot thin-wall area to optimize supporting; meanwhile, a guide column is further arranged to guide the stroke of the mold frame, and the width of a pouring inlet is gradually increased to optimize flowing of molten materials; the rear mold core is divided into upper and lower main bodies, the front mold core and the rear mold core as well as the two rear mold core main bodies are hermetically connected, and an elastic buffer layer is additionally arranged at the top of the supporting column, so that the forming quality and the production efficiency of the motor suspension bracket are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile NVH part manufacturing, especially a die structure for motor suspension support. BACKGROUND

[0002] With the rapid development of new energy vehicles and motor drive technology, the manufacturing precision and reliability of motor suspension support, as a key structural part connecting the motor and the vehicle body, are constantly improving. Currently, motor suspension support is generally formed by injection molding process.

[0003] In related technologies, the product forming cavity of the die structure for forming the fork leg is prone to deformation of the fork leg thin wall area due to stress concentration during solidification shrinkage. In simple terms, the traditional die lacks support for the weak area of the motor suspension support fork leg, and cannot offset the internal stress generated by material shrinkage during the pressure maintaining stage, resulting in unstable quality of the suspension support fork leg forming, deformation of the fork leg, and low yield of the product. UTILITY MODEL CONTENTS

[0004] The applicant provides a die structure for motor suspension support to optimize the die structure, prevent deformation of the motor suspension support, and improve production efficiency.

[0005] The technical scheme adopted by the utility model is as follows: a die structure for motor suspension support, comprising:

[0006] A front die frame and a rear die frame arranged vertically up and down, the bottom of the rear die frame is provided with a bottom plate;

[0007] A front die pin is arranged inside the front die frame;

[0008] A rear die pin is arranged inside the rear die frame and cooperates with the front die pin to form a die pin whole, and the die pin whole is provided with a forming cavity of a motor suspension support product;

[0009] A plurality of support columns are arranged on the bottom plate in the vertical direction;

[0010] The support columns penetrate through the rear die frame and abut against the bottom of the rear die pin, thereby supporting the rear die pin and increasing the strength of the rear die pin;

[0011] A pouring inlet is arranged on the front die frame, and the pouring inlet communicates with the forming cavity;

[0012] The rear die pin comprises a first rear die pin body and a second rear die pin body assembled in an up-down manner, the first rear die pin body is located above the second rear die pin body, and the second rear die pin body is fixed in the rear die frame.

[0013] In one of the embodiments, the support columns are evenly distributed below the fork thin wall area of the motor suspension bracket product.

[0014] In one of the embodiments, at least one guide column is further included on the bottom plate, which is used to guide the stroke direction between the front mold frame and the rear mold frame; preferably, the guide column has four, which are distributed on the bottom plate to form four corners of a rectangle.

[0015] In one of the embodiments, a guide gap is arranged between the top of the guide column and the rear mold frame, and the size of the guide gap ranges from 0.05 to 0.15 mm.

[0016] In one of the embodiments, the width of the pouring inlet gradually increases along the direction of the molten material flow.

[0017] In one of the embodiments, the first rear mold core body and the second rear mold core body are sealingly connected.

[0018] In one of the embodiments, the front mold core and the rear mold core are sealingly connected.

[0019] In one of the embodiments, an elastic buffer layer is additionally arranged at the contact end of the support column top and the rear mold core; preferably, the structure of the elastic buffer layer is set as a high-temperature-resistant silica gel pad.

[0020] The beneficial effects of the utility model are as follows:

[0021] The utility model has the advantages of compact structure, optimized mold structure, support column arranged on the bottom plate directly abutting against the bottom of the rear mold core, increased strength, provided effective support for the fork thin wall area, avoided stress concentration to cause deformation, ensured accurate mold closing of the mold frame by the arrangement of the guide column, optimized molten material flow by the design of the pouring inlet, improved filling effect, facilitated machining and assembly by the split design of the rear mold core, prevented molten material leakage by the sealing connection, and effectively improved the manufacturing precision and production efficiency of the motor suspension bracket.

[0022] The utility model also has the following advantages:

[0023] The utility model additionally arranges an elastic buffer layer at the top of the support column to protect the mold core and improve the product yield. DETAILED DESCRIPTION

[0024] Figure 1 It is a whole structure schematic view of the utility model.

[0025] Figure 2 It is a structure view of the utility model in the explosion state.

[0026] Figure 3 It is a structure view of the front mold core of the utility model.

[0027] Figure 4 The structure view of the rear die core of the utility model.

[0028] Figure 5 The bottom view of the utility model.

[0029] Wherein: 100, front die frame;200, rear die frame;300, pouring inlet;400, front die core;500, rear die core;600, support column;700, guide column;

[0030] 510, first rear die core body;520, second rear die core body. DETAILED DESCRIPTION

[0031] The specific embodiments of the utility model will be described below in conjunction with the drawings.

[0032] In order to facilitate understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The preferred embodiments of the utility model are shown in the drawings. However, the utility model can be realized 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 utility model more thorough and comprehensive.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] In the case of using "including", "having", and "containing" described herein, unless using explicit limiting terms such as "only", "consisting of", etc., another component can be added. Unless otherwise mentioned, the singular form of the term can include the plural form and cannot be understood as one in number.

[0035] It should be understood that although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of the utility model, the first element can be called the second element, and similarly, the second element can be called the first element.

[0036] In addition, the drawings are not drawn to scale 1:1, and the relative size of each element is only drawn by example in the drawings, not necessarily according to the true scale.

[0037] AsFigures 1-5 The accompanying drawing shows a schematic diagram of the structure of a mold for a motor suspension bracket according to an embodiment of the present invention; for ease of description, the drawing only shows the structure related to the embodiment of the present invention.

[0038] In this embodiment, a mold structure for a motor mounting bracket is provided, including a front mold frame 100 and a rear mold frame 200 arranged vertically upwards and downwards. The bottom of the rear mold frame 200 is fixedly connected to a base plate, which is a rectangular steel plate used to support the rear mold frame 200 and its internal components. The front mold frame 100 and the rear mold frame 200 are precisely aligned and guided for mold closing through guide pillars 700, ensuring the sealing of the molding cavity.

[0039] In this embodiment, the front mold core 400 is embedded inside the front mold frame 100 and fixed, the rear mold core 500 is embedded inside the rear mold frame 200, and the rear mold frame 200 is connected to the base plate.

[0040] Furthermore, after the front mold core 400 and the rear mold core 500 are closed, they form a mold core assembly. The interior of the mold core assembly is provided with a molding cavity for the motor suspension bracket product. The mating surfaces of the front mold core 400 and the rear mold core 500 are sealed to prevent leakage of molten material.

[0041] like Figure 2 As shown, in this embodiment, the rear mold core 500 consists of two parts: a first rear mold core body 510 and a second rear mold core body 520; specifically, the first rear mold core body 510 is located above the second rear mold core body 520 and achieves a sealed connection.

[0042] The second rear mold core body 520 is fixed inside the rear mold frame 200. The split design facilitates the processing of complex cavities and reduces maintenance costs.

[0043] In this embodiment, the base plate is provided with a plurality of cylindrical support columns 600 along the vertical direction; the support columns 600 penetrate the bottom through hole of the rear mold frame 200 and abut against the bottom of the rear mold core 500 (specifically the lower surface of the second rear mold core body 520);

[0044] The support columns 600 are distributed in a manner corresponding to the thin-walled area of ​​the fork legs of the motor suspension bracket product, and are evenly distributed directly below this area to counteract the shrinkage stress during the injection molding and holding pressure stage and prevent the fork legs from deforming.

[0045] In this embodiment, for example, a high-temperature resistant silicone pad (not shown in the figure) can be added to the contact end between the top of the support column 600 and the rear mold core 500 as an elastic buffer layer to reduce the damage to the mold core caused by the mold closing impact.

[0046] like Figure 5As shown, in the embodiment, four guide columns 700 are arranged at the four corners of the bottom plate, and are distributed in a rectangular shape, and a guide gap of 0.1 mm (tolerance range 0.05-0.15 mm) is left between the guide columns 700 and the rear mold frame 200.

[0047] Further, the guide columns 700 are matched with the preset guide holes, so that the front mold frame 100 and the rear mold frame 200 are accurately moved in the vertical direction during the mold closing process, and the cavity misplacement caused by the deflection is avoided.

[0048] In the embodiment, the upper surface of the front mold frame 100 is provided with a gate 300, and the cross section of the gate 300 is trapezoidal, and the width gradually increases along the flow direction of the molten material (from the gate to the end of the cavity).

[0049] Exemplarily, since the gate 300 is communicated with the molding cavity through the flow channel, the surface of the flow channel can be polished to a mirror level roughness (Ra≤0.2 μm), so as to further reduce the flow resistance.

[0050] In actual work, the working process of the utility model is as follows:

[0051] During the mold closing stage, the guide columns 700 guide the front mold frame 100 and the rear mold frame 200 to be accurately aligned until the front mold core 400 and the rear mold core 500 are completely closed.

[0052] During the injection molding stage, the molten material is injected into the molding cavity from the gate 300, and the support column 600 provides rigid support for the fork leg area of the rear mold core 500 to prevent the deformation of the thin wall area.

[0053] During the pressure maintaining and cooling stage, the elastic buffer layer absorbs the stress generated by the material shrinkage, the guide columns 700 maintain the stability of the mold frame, and the size accuracy of the product is ensured.

[0054] During the mold opening and ejection stage, the front mold frame 100 and the rear mold frame 200 are separated, and the molded product is separated from the rear mold core 500.

[0055] The utility model has the advantages of reasonable structure and simple operation, and the mold structure is optimized, the support column 600 is additionally arranged on the bottom plate, the support column 600 directly abuts against the bottom of the rear mold core 500 and corresponds to the fork leg thin wall area of the motor suspension bracket product, the strength of the mold core is increased, and effective support is provided for the fork leg thin wall area, so that the deformation caused by stress concentration is avoided.

[0056] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present application.

[0057] The above-described embodiments only express the implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as the limitation of the scope of the present application patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A mold structure for a motor suspension bracket, characterized by, The application relates to a vertical arrangement of a front mold frame (100) and a rear mold frame (200), the bottom of the rear mold frame (200) is provided with a bottom plate, a front mold core (400) is arranged in the front mold frame (100), a rear mold core (500) is arranged in the rear mold frame (200) and cooperates with the front mold core (400) to form a mold core whole body, the mold core whole body is internally provided with a forming cavity of a motor suspension bracket product, a plurality of supporting columns (600) are arranged on the bottom plate in the vertical direction, the supporting columns (600) penetrate through the rear mold frame (200) and abut against the bottom of the rear mold core (500), thereby supporting the rear mold core (500) and increasing the strength of the rear mold core (500), a pouring inlet (300) is arranged on the front mold frame (100) and communicates with the forming cavity, the rear mold core (500) comprises a first rear mold core body (510) and a second rear mold core body (520) which are assembled in a top-down mode, the first rear mold core body (510) is located above the second rear mold core body (520) and the second rear mold core body (520) is fixed in the rear mold frame (200). The supporting columns (600) are uniformly distributed below the fork leg thin-wall area of the motor suspension bracket product. The bottom plate further comprises at least one guide column (700) which is used for guiding the stroke direction between the front mold frame (100) and the rear mold frame (200). The guide column (700) has four guide columns (700) which are distributed on the bottom plate to form four corner points of a rectangular shape. A guide gap is arranged between the top of the guide column (700) and the rear mold frame (200), and the size of the guide gap ranges from 0.05 mm to 0.15 mm. The width of the pouring inlet (300) gradually increases along the flowing direction of the molten material. The first rear mold core body (510) and the second rear mold core body (520) are sealingly connected. The front mold core (400) and the rear mold core (500) are sealingly connected.

2. The mold structure for a motor suspension bracket according to claim 1, characterized by, An elastic buffer layer is additionally arranged at the contact end of the top of the supporting column (600) and the rear mold core (500).

3. The mold structure for a motor suspension bracket according to claim 1, characterized by, The structure of the elastic buffer layer is a high-temperature-resistant silica gel pad.

4. The mold structure for a motor suspension support according to claim 3, characterized by, ​ 5. The mold structure for a motor suspension bracket according to claim 3, characterized by, ​ 6. The mold structure for a motor suspension bracket according to claim 1, wherein ​ 7. The mold structure for a motor suspension bracket according to claim 1, wherein ​ 8. The mold structure for a motor suspension support according to claim 1, wherein ​ 9. The mold structure for a motor suspension bracket according to claim 1, wherein ​ 10. The mold structure for a motor suspension bracket according to claim 9, wherein ​

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