A new energy lawn mower chain saw motor end cover forming mold

Abstract

The utility model relates to the field of mold forming technology, and in particular to a new energy lawn mower chain saw motor end cover forming mold, including: a cavity plate and a core plate, the cavity plate and the core plate are arranged relative to each other to form a forming cavity, the forming cavity is adapted to the shape of the motor end cover component, a flow channel is opened on one side of the core plate, and the flow channel is connected to the forming cavity; wherein, a plurality of guide cavities, a first ejection hole and a second ejection hole are arranged around the forming cavity on the core plate, the first ejection hole and the second ejection hole are both arranged through the core plate, and a plurality of first ejection holes are arranged relative to the end of the forming cavity; the guide cavity is arranged between each two adjacent first ejection holes, and the guide cavity is connected to the forming cavity, and the second ejection hole is arranged in the middle of the cavity of the guide cavity. The utility model optimizes the casting system and the ejection system of the forming mold to avoid defects such as pores on the surface of the motor end cover component, thereby ensuring product quality and performance and improving product qualification rate.

Description

Technical Field

[0001] The utility model relates to the technical field of mold forming, in particular to a new energy lawn mower chain saw motor end cover forming mold. Background Art

[0002] The motor end cap of the new energy lawn mower chain saw is a component used in the motor of the lawn mower chain saw. Its function is to protect the key components such as the rotor and stator inside the motor, and at the same time, it plays the role of fixing the motor shaft and bearings. The end cap is usually made of metal or plastic materials. When designing, factors such as heat dissipation, waterproofing, dustproofing, and mechanical strength of the motor need to be considered.

[0003] The molding die is a key tool for manufacturing end caps. During die-casting, the molten metal is hydraulically pressed into the corresponding mold and the end cap product is formed after cooling. However, during the molding process, when the molten metal begins to fill the mold cavity, the flow of the molten metal will push the air in the cavity forward and be discharged through the pre-designed exhaust grooves or exhaust holes. Due to defects in the mold design, residual gas is generated, which gradually shrinks and gathers on the surface of the end cap product during the cooling and solidification of the molten metal, forming pore defects, affecting product quality and performance, and making it difficult to improve the product qualification rate.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or any form of implication that the information constitutes the prior art known to those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a new energy lawn mower chain saw motor end cover forming mold to avoid defects such as pores on the surface of the motor end cover, ensure product quality and performance, and improve product qualification rate.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is: a new energy lawn mower chain saw motor end cover forming mold, comprising:

[0007] A cavity plate and a core plate, wherein the cavity plate and the core plate are arranged opposite to each other to form a molding cavity, wherein the molding cavity is adapted to the shape of the motor end cover component, and a flow channel is provided on one side of the core plate, and the flow channel is connected to the molding cavity;

[0008] Among them, a plurality of guide cavities, a first ejection hole and a second ejection hole are arranged on the core plate around the molding cavity, the first ejection hole and the second ejection hole are both arranged through the core plate, and the plurality of first ejection holes are arranged opposite to the end of the molding cavity; the guide cavity is arranged between each adjacent two first ejection holes, and the guide cavity is connected to the molding cavity, and the second ejection hole is arranged in the middle of the cavity of the guide cavity.

[0009] Furthermore, a guide surface is provided between the guide cavity and the forming cavity. The guide surface is an arc-shaped slope surface, which is located on the side of the guide cavity facing the forming cavity and is inclined toward the bottom side of the cavity of the guide cavity.

[0010] Furthermore, the cavity plate is provided with positioning pins, and a plurality of positioning pins are provided, which are arranged opposite to the outer end surface of the molding cavity away from the core plate and are symmetrically arranged with respect to the axis center of the motor end cover component.

[0011] Furthermore, a third ejection hole is provided in the flow channel, and three third ejection holes are provided, which are respectively located at the end of the flow channel close to the molding cavity and the middle position of the molding cavity.

[0012] Furthermore, a core block is provided on one side of the core plate facing the molding cavity, and the core block is fixedly connected to the core plate via fasteners.

[0013] Furthermore, a fourth ejection hole is arranged on the core plate, and the third ejection hole passes through the core plate and the core block and is arranged opposite to the inner end surface of the molding cavity.

[0014] Furthermore, the first ejection hole, the second ejection hole, the third ejection hole and the fourth ejection hole are each correspondingly provided with an ejection rod, and the ejection rod can move along the mold opening direction.

[0015] Furthermore, two molding cavities are provided, each molding cavity is connected to one flow channel, and the two flow channels are arranged to intersect with one end away from the corresponding molding cavity.

[0016] Furthermore, it also includes an upper template and a lower template, wherein one side of the upper template and the lower template opposite to each other is hollow, and the middle parts of the upper template and the lower template are spliced ​​together to form an assembly cavity, and the cavity plate and the core plate are located in the assembly cavity.

[0017] Furthermore, a pouring cavity is provided through the upper mold plate, and the pouring cavity extends to the intersection position of the flow channels and is connected with the molding cavity through the flow channels.

[0018] The beneficial effects of the utility model are as follows: the utility model optimizes the pouring system and the ejection system of the molding die to avoid the formation of defects such as pores on the surface of the motor end cover part, adjusts the flow channel to be located on one side of the molding cavity, and arranges a plurality of guide cavities connected to the molding cavity around the molding cavity at intervals, thereby reducing turbulence during metal liquid filling, reducing the generation of pores and inclusions, and can effectively discharge the gas in the molding cavity through the guide cavity during the pouring process, thereby forming a targeted improvement effect on the pore defects of the overall outer surface of the motor end cover part, and in addition, a second ejection hole is arranged in the guide cavity to facilitate the ejection of the formed slag bag, ensuring the stability of the work when the part is ejected and demolded, thereby ensuring product quality and performance, and improving the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a molding die for an end cover of a chain saw motor for a new energy lawn mower in an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the cavity plate in the embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the core plate in the embodiment of the utility model;

[0023] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0024] Figure 5 A bottom view of a core plate in an embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of the structure of the motor end cover of the new energy lawn mower chain saw in the embodiment of the utility model.

[0026] Figure numerals: 1, motor end cover component; 10, cavity plate; 11, positioning pin; 20, core plate; 21, flow channel; 22, guide cavity; 22a, guide surface; 23, first ejection hole; 24, second ejection hole; 25, third ejection hole; 26, core block; 27, fastener; 28, fourth ejection hole; 30, molding cavity; 40, upper template; 41, casting cavity; 50, lower template. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] like Figures 1 to 6 The new energy lawn mower chain saw motor end cover forming mold shown includes:

[0031] The cavity plate 10 and the core plate 20 are arranged opposite to each other to form a molding cavity 30, and the molding cavity 30 is adapted to the shape of the motor end cover component 1, and a flow channel 21 is opened on one side of the core plate 20, and the flow channel 21 is connected to the molding cavity 30;

[0032] Among them, a plurality of guide cavities 22, a first ejection hole 23 and a second ejection hole 24 are arranged on the core plate 20 around the molding cavity 30. The first ejection hole 23 and the second ejection hole 24 are both arranged through the core plate 20, and the plurality of first ejection holes 23 are arranged opposite to the end of the molding cavity 30; the guide cavity 22 is arranged between each adjacent two first ejection holes 23, and the guide cavity 22 is connected to the molding cavity 30, and the second ejection hole 24 is arranged in the middle of the cavity of the guide cavity 22.

[0033] The utility model optimizes the pouring system and ejection system of the molding die to avoid defects such as pores on the surface of the motor end cover component 1, adjusts the flow channel 21 to be located on one side of the molding cavity 30, and arranges a plurality of guide cavities 22 connected to the molding cavity 30 at intervals around the molding cavity 30, thereby reducing turbulence during metal liquid filling, reducing the generation of pores and inclusions, and can effectively discharge the gas in the molding cavity 30 through the guide cavity 22 during the pouring process, thereby forming a targeted improvement effect on the pore defects of the overall outer surface of the motor end cover component 1. In addition, a second ejection hole 24 is arranged in the guide cavity 22 to facilitate ejection of the formed slag bag, ensure the stability of the work when the component is ejected and demolded, thereby ensuring product quality and performance and improving the product qualification rate.

[0034] A molding cavity 30 adapted to the shape of the motor end cover component 1 is formed by the precisely designed cavity plate 10 and core plate 20, thereby ensuring the dimensional accuracy and appearance quality of the component; the provision of the first ejection hole 23 and the second ejection hole 24 not only facilitates the gas discharge, but also facilitates the smooth demolding of the motor end cover component 1 after molding, thereby improving production efficiency; the second ejection hole 24 provided in the guide cavity 22 facilitates the ejection of the molded slag bag, thereby reducing the influence of the slag bag on the quality of the component; through the above-mentioned optimization measures, the occurrence of defects such as pores can be significantly reduced, the product quality and performance of the motor end cover component 1 can be improved, thereby improving the product qualification rate.

[0035] On the basis of the above embodiment, a guide surface 22a is arranged between the guide cavity 22 and the forming cavity 30. The guide surface 22a is an arc-shaped slope surface, which is located on the side of the guide cavity 22 facing the forming cavity 30, and is inclined toward the bottom side of the cavity body of the guide cavity 22; the arc-shaped slope surface as the guide surface 22a can smoothly guide the molten metal from the forming cavity 30 into the guide cavity 22, prolong the gas discharge time, improve the exhaust efficiency and effect, reduce the turbulence and eddy current in the flow of the molten metal, and help reduce the generation of pores and inclusions; the smooth arc-shaped slope surface reduces the impact and friction of the molten metal on the mold surface, thereby extending the service life of the mold.

[0036] On the basis of the above-mentioned embodiment, a locating pin 11 is arranged on the cavity plate 10, and a plurality of locating pins 11 are arranged, which are arranged opposite to the outer end surface of the molding cavity 30 away from the core plate 20, and are symmetrically arranged with respect to the axis center of the motor end cover component 1; the locating pin 11 is arranged opposite to the outer end surface of the molding cavity 30 away from the core plate 20, and is symmetrically arranged with respect to the axis center of the motor end cover component 1, which can ensure the precise alignment of the mold when closing, improve the dimensional accuracy and consistency of the component, prevent the mold from shifting when working under high pressure, and ensure the stability of the mold when the metal liquid is filled.

[0037] On the basis of the above embodiment, a third ejection hole 25 is provided in the runner 21. Three third ejection holes 25 are provided, which are respectively located at the end of the runner 21 close to the molding cavity 30 and the middle position of the molding cavity 30; the third ejection hole 25 can be used as a channel for auxiliary demolding, which helps the molded casting to be more easily ejected from the mold, especially in the area near the runner 21.

[0038] On the basis of the above embodiment, a core block 26 is provided on the side of the core plate 20 facing the molding cavity 30, and the core block 26 is fixedly connected to the core plate 20 by fasteners 27; the core block 26 can be designed and processed separately to ensure the dimensional accuracy of the molding cavity 30, especially at the position where the inner side of the end face of the motor end cover component 1 has a complex shape or fine features, thereby improving the molding quality of the motor end cover component 1, and the core block 26 fixedly connected by the fasteners 27 enhances the overall structural stability of the mold, so that the precise positioning and fixation of the core block 26 reduces the possible offset or misalignment during the molding process, thereby reducing molding defects.

[0039] On the basis of the above embodiment, a fourth ejection hole 28 is provided on the core plate 20, and the third ejection hole 25 passes through the core plate 20 and the core block 26, and is arranged opposite to the inner end surface of the molding cavity 30; by providing the fourth ejection hole 28, a secondary ejection effect is formed, which facilitates the smooth and effective separation of the molded part from the core block 26, reduces the risk of adhesion and damage, and ensures the molding quality of the inner wall of the part.

[0040] On the basis of the above embodiment, the first ejection hole 23, the second ejection hole 24, the third ejection hole 25 and the fourth ejection hole 28 are respectively provided with ejector rods, and the ejector rods can move along the mold opening direction; precise control of the ejector rods can ensure that the casting is subjected to uniform force during the ejection process, reduce damage to the casting caused by uneven ejection force, help reduce deformation of the casting during the ejection process, and improve the dimensional accuracy and appearance quality of the casting.

[0041] On the basis of the above embodiment, two molding cavities 30 are provided, each molding cavity 30 is connected to a flow channel 21, and the two flow channels 21 are intersected at one end away from the corresponding molding cavity 30, forming a one-mold two-cavity structure, allowing two motor end cover parts 1 to be produced at the same time, thereby improving production efficiency and output per unit time, and reducing the production cost of a single part; the two flow channels 21 are intersected at one end away from the corresponding molding cavity 30, which helps to achieve symmetrical molding and reduce defects caused by asymmetric flow of molten metal.

[0042] On the basis of the above embodiment, it also includes an upper template 40 and a lower template 50. The upper template 40 and the lower template 50 are arranged opposite to each other on one side and are hollow. The middle parts of the upper template 40 and the lower template 50 are spliced ​​together to form an assembly cavity. The cavity plate 10 and the core plate 20 are located in the assembly cavity. The design of the assembly cavity simplifies the assembly process of the mold, facilitates the installation and positioning of the cavity plate 10 and the core plate 20, ensures the stability of the assembly, and improves the molding accuracy.

[0043] On the basis of the above-mentioned embodiment, a pouring cavity 41 is provided through the upper mold plate 40, and the pouring cavity 41 extends to the intersection position of the runner 21, and is connected with the molding cavity 30 through the runner 21; the pouring cavity 41 directly connected to the runner 21 can improve the efficiency of the molten metal filling the molding cavity 30, especially in the design of double molding cavities 30, it can provide molten metal to the two molding cavities 30 at the same time, and reduce the oxidation of the molten metal when it comes into contact with the air and the mixing of impurities, thereby improving the surface quality of the casting.

[0044] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A new energy lawn mower chain saw motor end cover forming mold, characterized in that: include: A cavity plate and a core plate, wherein the cavity plate and the core plate are arranged opposite to each other to form a molding cavity, wherein the molding cavity is adapted to the shape of the motor end cover component, and a flow channel is provided on one side of the core plate, and the flow channel is connected to the molding cavity; Among them, a plurality of guide cavities, a first ejection hole and a second ejection hole are arranged on the core plate around the molding cavity, the first ejection hole and the second ejection hole are both arranged through the core plate, and the plurality of first ejection holes are arranged opposite to the end of the molding cavity; the guide cavity is arranged between each adjacent two first ejection holes, and the guide cavity is connected to the molding cavity, and the second ejection hole is arranged in the middle of the cavity of the guide cavity.

2. The new energy lawn mower chain saw motor end cover forming mold according to claim 1, characterized in that: A guide surface is provided between the guide cavity and the forming cavity. The guide surface is an arc-shaped slope surface, located on the side of the guide cavity facing the forming cavity, and inclined toward the bottom side of the cavity of the guide cavity.

3. The new energy lawn mower chain saw motor end cover forming mold according to claim 1, characterized in that: The cavity plate is provided with positioning pins, and a plurality of positioning pins are provided, which are arranged opposite to the outer end surface of the molding cavity away from the core plate and are symmetrically arranged with respect to the axis center of the motor end cover component.

4. The new energy lawn mower chain saw motor end cover forming mold according to claim 1, characterized in that: The flow channel is provided with a third ejection hole, and three third ejection holes are provided, which are respectively located at the end of the flow channel close to the molding cavity and the middle position of the molding cavity.

5. The new energy lawn mower chain saw motor end cover forming mold according to claim 4, characterized in that: A core block is arranged on one side of the core plate facing the molding cavity, and the core block is fixedly connected to the core plate via fasteners.

6. The new energy lawn mower chain saw motor end cover forming mold according to claim 5, characterized in that: The core plate is provided with a fourth ejection hole, and the third ejection hole passes through the core plate and the core block and is arranged opposite to the inner end surface of the molding cavity.

7. The new energy lawn mower chain saw motor end cover forming mold according to claim 6, characterized in that: The first ejection hole, the second ejection hole, the third ejection hole and the fourth ejection hole are each correspondingly provided with an ejection rod, and the ejection rod can move along the mold opening direction.

8. The new energy lawn mower chain saw motor end cover forming mold according to claim 1, characterized in that: There are two molding cavities, each of which is connected to a flow channel, and the two flow channels are intersected with one end away from the corresponding molding cavity.

9. The new energy lawn mower chain saw motor end cover forming mold according to claim 8, characterized in that: It also includes an upper template and a lower template. One side of the upper template and the lower template that are opposite to each other is hollow, and the middle parts of the upper template and the lower template are spliced ​​together to form an assembly cavity. The cavity plate and the core plate are located in the assembly cavity.

10. The new energy lawn mower chain saw motor end cover forming mold according to claim 9, characterized in that: A pouring cavity is provided through the upper mold plate, and the pouring cavity extends to the intersection position of the flow channels and is connected with the molding cavity through the flow channels.

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