Casting mold for automobile motor end cover

Abstract

The utility model discloses an automobile motor end cover casting mold which comprises a mold body, an ingate and a dead head, a cavity for forming a product is formed in the mold body, the ingate is located in the mold body and located above the cavity, and the dead head is arranged in the mold body and suitable for communicating the ingate with the cavity; and during casting, molten metal in the ingate is suitable for flowing into the cavity from the riser under the action of gravity. The casting mold has the beneficial effects that the ingate is arranged on the upper portion, molten metal sequentially flows into the cavity from the ingate and the riser under the action of gravity, and then the molten metal at the riser can be finally solidified, so that the cavity is easily filled with the molten metal when a product is cast, and the defects of insufficient casting, cold shut and the like can be overcome; and on the other hand, the top temperature is high, the bottom temperature is low, sequential solidification and riser feeding can be achieved easily, meanwhile, less molten metal is used, and cost is saved.

Description

Technical Field

[0001] The present application relates to the field of mold technology, and in particular to a casting mold for an automobile motor end cover. Background Art

[0002] In the casting process of products, the role of the riser is crucial. The cavity of the riser is a cavity for storing liquid metal. It supplies metal when the casting is formed, and has the functions of preventing shrinkage, shrinkage, exhaust and slag collection. The main function of the riser is to compensate for shrinkage. The design function of the riser is different. The form, size and opening position of the riser are different.

[0003] In the prior art, such as Figure 1 As shown, the automotive motor end cover product adopts a bottom pouring system, that is, a pouring system in which the inner gate is opened at the bottom or bottom side of the casting pouring position, so that the molten metal enters the cavity from the bottom down gate, and thus it has the following disadvantages: since the riser is the last to enter the molten metal, in order to ensure that the riser compensates for the shrinkage of the molded product, the volume of the riser after molding will be large, which will result in excessive material consumption and low cooling efficiency. Therefore, a casting mold for an automotive motor end cover is proposed to solve the above technical problems. Utility Model Content

[0004] One of the purposes of the present application is to provide a casting mold for an automobile motor end cover.

[0005] In order to achieve the above objectives, the technical solution adopted in the present application is: a casting mold for an automobile motor end cover, comprising a mold body, an ingrowth and a riser, the mold body having a cavity for molding a product, the ingrowth being located in the mold body and above the cavity, the riser being arranged in the mold body and suitable for connecting the ingrowth with the cavity; during casting, the molten metal in the ingrowth is suitable for flowing from the riser into the cavity under the action of gravity.

[0006] Preferably, there are a plurality of risers, and the risers are dispersedly arranged in the mold body.

[0007] Preferably, the ingates are extended along the outer contour of the cavity.

[0008] Preferably, the riser includes a first riser and a second riser, the first riser is suitable for connecting the ingate with the cavity, and the second riser is connected with the cavity and isolated from the first riser.

[0009] Preferably, the ingrown includes an inlet channel and a flow channel, the flow channel is connected to the riser, the inlet channel is curved and the bottom is connected to the flow channel, so that the curve of the inlet channel forms a first buffer zone for the flow of molten metal.

[0010] Preferably, the bottom end of the flow channel is connected to the top of the bottom of the inlet channel, so that the connection between the flow channel and the inlet channel forms a second buffer zone for the flow of the molten metal.

[0011] Preferably, the inlet channel and the flow channel are both arranged in the lower mold or the upper mold.

[0012] Preferably, the inlet channel is arranged in the lower mold, and the flow channel is arranged in the upper mold.

[0013] Preferably, the inlet channel is arranged in the upper mold, and the flow channel is arranged in the lower mold.

[0014] Preferably, the size of the top opening of the inlet channel decreases from top to bottom.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] The utility model arranges the ingate at the top, and the molten metal flows into the cavity from the ingate and the riser in sequence under the action of gravity, so that the molten metal at the riser will solidify last, so that the molten metal can easily fill the cavity when the product is cast, and defects such as insufficient pouring and cold shut can be avoided; on the other hand, the top temperature is high and the bottom temperature is low, which is conducive to sequential solidification and riser shrinkage compensation, and at the same time, less molten metal is used, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the existing motor end cover product of the utility model.

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 3 It is a cross-sectional structural schematic diagram of the utility model.

[0020] Figure 4 It is a schematic diagram of the upper mold structure of the utility model.

[0021] Figure 5 It is a schematic diagram of the lower mold structure of the utility model.

[0022] Figure 6 It is a schematic diagram of the motor end cover after molding of the utility model.

[0023] Figure 7It is a schematic diagram of the structure of the utility model after the molten metal at the ingates and risers solidifies.

[0024] In the figure: 1. motor end cover; 101. thickened part; 102. mounting part; 2. mold body; 201. upper mold; 202. lower mold; 3. ingrown; 301. entry channel; 3011. vertical channel; 3012. horizontal channel; 302. flow channel; 4. riser; 401. first riser; 4011. first riser block; 402. second riser; 4022. second riser block; 5. runner block. DETAILED DESCRIPTION

[0025] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0027] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0028] One of the preferred embodiments of the present application is as follows: Figures 1 to 7 As shown, a casting mold for an automobile motor end cover 1 includes a mold body 2, an ingrate 3 and a riser 4, wherein the mold body 2 has a cavity for molding a product, the ingrate 3 is located in the mold body 2 and above the cavity, and the riser 4 is arranged in the mold body 2, and the ingrate 3 is connected to the cavity through the action of the riser 4.

[0029] It is understandable that during casting, the molten metal is injected from the upper ingates 3, and then under the action of gravity, the molten metal will flow into the cavity from the ingates 3 and the risers 4 in turn. It should be known that since the high-temperature molten metal passes through the risers 4, the risers 4 will be in a high-temperature state and the molten metal is flowing, that is, only after the molten metal fills the cavity, the molten metal will continue to enter and then it will stop and fill the risers 4, so that the molten metal at the risers 4 will finally solidify, so that the molten metal can easily fill the cavity when the (motor end cover 1) product is cast, and defects such as insufficient pouring and cold shut can be avoided; and on the other hand, the top temperature is high and the bottom temperature is low, which is conducive to sequential solidification and riser shrinkage compensation, and at the same time, it can also make the use of less molten metal and save costs.

[0030] Compared with the prior art, the (motor end cover 1) product adopts a bottom pouring casting method, that is, the inner runner 3 is arranged from bottom to top, and the molten metal will first enter the cavity, and then enter the riser 4 from the cavity. Therefore, in order to prevent the molten metal at the riser 4 from cooling and solidifying quickly, the riser 4 must be set large enough, that is, the riser 4 needs to be able to store a sufficient amount of molten metal at this time, which will cause a waste of molten metal, and it is easy to produce oxide slag, cold shut, insufficient pouring and other defects. When there is a large flat surface on the top, it is easy to produce sand holes and other problems.

[0031] In one of the embodiments of the present application, Figure 1 As shown, since the motor end cover 1 is thick, multiple risers 4 are required, and the multiple risers 4 can be dispersedly arranged in the mold body 2. It can be understood that the motor end cover 1 can be compensated by multiple risers 4 to ensure the quality and integrity of the casting.

[0032] Of course, the size of each riser 4 can be set according to actual conditions to ensure that metal can be fully replenished during casting and reduce the generation of voids and defects. Figure 1 As shown, a mounting portion 102 is provided on the outside of the motor end cover 1, so the riser 4 here will be larger than the other risers 4, such as Figure 4 The riser 4 corresponds to the position b in the figure.

[0033] Furthermore, in order to allow the ingrowth 3 to allow the molten metal to flow into the cavity sufficiently and evenly, the ingrowth 3 can be extended along the outer contour of the cavity. Exemplarily, since the product in the present application is a motor end cover 1, which is a disc-shaped structure, the ingrowth 3 can be provided in a circular ring shape, so that the molten metal can enter the cavity evenly through the corresponding (circumferentially dispersed) risers 4. At the same time, due to the provision of multiple risers 4, the molten metal can also stably enter the cavity from multiple directions, so that the molten metal will not splash, thereby ensuring stability during pouring. Similarly, if the product is rectangular, trapezoidal, etc., the corresponding ingrowth 3 can be a corresponding rectangular or trapezoidal ring structure.

[0034] Of course, for some products that are not very thick, the above-mentioned ring-shaped sprue 3 and the circumferentially distributed risers 4 can well cope with the shrinkage of the product. However, for some thicker products, such as the motor end cover 1 in this application, the outside has a thickened portion 101, so the corresponding riser 4 here will also be larger. Therefore, if the molten metal flows directly from the riser 4 into the cavity at this time, the molten metal will be subjected to a greater impact force to flow into the cavity, thereby causing the molten metal to splash, affecting the processing quality. It should be noted that the above-mentioned mounting portion 102 is relatively thin, and thus only the area of ​​the riser 4 is relatively large here, but its thickness (height) is still relatively small, and a part of the core block of the molding mounting portion 102 is located in this riser 4, so the impact force of the molten metal flowing out of the riser 4 here will not be too large, and it can also stably enter the cavity.

[0035] Therefore, in order to solve the above technical problems, one of the embodiments of the present application is as follows: Figure 4 As shown, the riser 4 includes a first riser 401 and a second riser 402 . The first riser 401 can connect the ingate 3 with the cavity, while the second riser 402 is connected with the cavity and isolated from the first riser 401 .

[0036] It is understandable that, for the first riser 401, the molten metal still enters the mold cavity from the first riser 401. For the second riser 402, after the mold cavity is filled with molten metal, the molten metal will enter the second riser 402 from the mold cavity, which can prevent the impact and splashing of the molten metal, ensure smooth mold filling, and reduce metal oxidation, thereby greatly improving the quality of product molding.

[0037] like Figure 6 As shown, the runner block 5 is formed after the metal liquid of the inner runner 3 solidifies. Similarly, the first riser 401 solidifies to form a first riser block 4011, and the second riser 402 solidifies to form a second riser block 4022. Figure 7As shown, it is the shape formed after the molten metal in the ingates 3 and risers 4 solidifies after the motor end cover 1 is removed; of course, this shape corresponds to the arrangement of the ingates 3 and risers 4 inside the mold body 2.

[0038] One of the embodiments of the present application is as follows: Figure 3 As shown, the ingrate 3 includes an inlet channel 301 and a flow channel 302, the flow channel 302 is connected to the riser 4, the inlet channel 301 is bent and the bottom is connected to the flow channel 302, and then the bend of the inlet channel 301 forms a first buffer zone for the flow of molten metal. It should be noted that the inlet channel 301 and the flow channel 302 are as the names suggest, the inlet channel 301 is the part for injecting and pouring the molten metal, and the flow channel 302 is the part for conveying the injected molten metal to the riser 4 and the cavity.

[0039] Specifically, Figure 3 As shown, the inlet channel 301 includes a vertical channel 3011 and a horizontal channel 3012 that are connected, and the vertical channel 3011 and the horizontal channel 3012 are approximately in an "L"-shaped structure, and the connection between the two is curved, so that when the molten metal enters the horizontal channel 3012 from the vertical channel 3011, due to the curved setting of the connection, the molten metal will be subject to a certain resistance, and its flow rate will be reduced. Of course, the vertical channel 3011 can also be set in an inclined manner (non-vertical setting), which can further reduce the impact force of the molten metal.

[0040] like Figure 3 As shown, the size of the top opening of the inlet channel 301 decreases from top to bottom. For example, the top opening of the inlet channel 301 can be set to a trumpet-shaped structure, so that the molten metal can be injected into the ingrown channel 3 from the inlet channel 301 more smoothly and conveniently.

[0041] Further, such as Figure 3 As shown, the bottom end of the flow channel 302 is connected to the bottom top of the inlet channel 301, so that the connection between the flow channel 302 and the inlet channel 301 forms a second buffer zone for the flow of the molten metal.

[0042] Specifically, Figure 3 As shown, that is to say, the horizontal channel 3012 is located at the bottom of the flow channel 302, and then the molten metal enters the horizontal channel 3012 from the vertical channel 3011, and then flows up from the bottom horizontal channel 3012 to the flow channel 302. In this process, the molten metal needs to overcome its own gravity and flow upward, so its own flow rate will be reduced, and then it plays a role of a second buffer, so that the subsequent molten metal will not have too much impact force after entering the cavity, thereby improving the product molding quality.

[0043] In this embodiment, there are many specific configuration methods for the inner runner 3, including but not limited to the following:

[0044] Method 1: The inlet channel 301 and the flow channel 302 are both disposed in the lower mold 202 .

[0045] It is understandable that if Figure 6 As shown, at this time, the product (motor end cover 1), runner block 5, first riser block 4011 and second riser 402 are all located in the lower mold 202, which will make it difficult to demold the product at a later stage.

[0046] Method 2: The inlet channel 301 and the flow channel 302 are both disposed on the upper mold 201 .

[0047] It is understandable that if Figure 6 As shown, at this time, the product (motor end cover 1), runner block 5, first riser block 4011 and second riser 402 are all located in the upper mold 201, which makes it difficult to open the mold body 2 of the product.

[0048] Method three: the inlet channel 301 is disposed in the lower mold 202 , and the flow channel 302 is disposed in the upper mold 201 .

[0049] Method 4: The inlet channel 301 is disposed in the upper mold 201 , and the flow channel 302 is disposed in the lower mold 202 .

[0050] For the above-mentioned method 3 and method 4, that is, part of the ingates 3 is located in the upper mold 201 and part of it is located in the lower mold 202, so that the ingates 3 are rationally distributed, that is, the runner blocks 5 that solidify later will not all adhere to the upper mold 201 or the lower mold 202 separately, making the overall structure of the mold more reasonable, so that the subsequent mold opening and demoulding processes can be smoother, and the production efficiency is greatly improved. Of course, the specific method can be set by technicians in this field according to actual conditions.

[0051] The working principle of the utility model is:

[0052] The molten metal is injected from the opening of the inner runner 3, and then the molten metal enters the horizontal channel 3012 from the vertical channel 3011 and undergoes the first buffering, and then the molten metal flows from the bottom horizontal channel 3012 to the flow channel 302 and undergoes the second buffering, and the molten metal in the flow channel 302 will enter the mold cavity from different first risers 401. When the mold cavity is filled with molten metal, the molten metal in the mold cavity will enter the second riser 402, and the molten metal outside the mold cavity will enter the first riser 401. Finally, after cooling and solidification, the desired product (motor end cover 1) can be obtained.

[0053] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A casting mold for an automobile motor end cover, characterized in that: include: A mold body, wherein the mold body has a cavity for molding the product; An ingate, the ingate being located in the mold body and above the cavity; as well as A riser is arranged in the mold body and is suitable for connecting the ingrowth with the cavity; when casting, the molten metal in the ingrowth is suitable for flowing from the riser to the cavity under the action of gravity.

2. The casting mold for the automobile motor end cover according to claim 1, characterized in that: There are a plurality of risers, and the risers are dispersedly arranged in the mold body.

3. The casting mold for the automobile motor end cover according to claim 2, characterized in that: The inner runner is extended along the outer contour of the cavity.

4. The casting mold for the automobile motor end cover according to any one of claims 1 to 3, characterized in that: The riser includes a first riser and a second riser, the first riser is suitable for connecting the ingate with the cavity, and the second riser is connected with the cavity and isolated from the first riser.

5. The casting mold for the automobile motor end cover according to claim 1, characterized in that: The ingrown includes an inlet channel and a flow channel, the flow channel is connected to the riser, the inlet channel is bent and the bottom is connected to the flow channel, so that the bend of the inlet channel forms a first buffer zone for the flow of molten metal.

6. The casting mold for the automobile motor end cover according to claim 5, characterized in that: The bottom end of the flow channel is connected to the bottom top of the inlet channel, so that the connection between the flow channel and the inlet channel forms a second buffer zone for the flow of the molten metal.

7. The casting mold for the automobile motor end cover according to claim 5, characterized in that: The inlet channel and the flow channel are both arranged on the lower mold or the upper mold.

8. The casting mold for the automobile motor end cover according to claim 5, characterized in that: The inlet channel is arranged on the lower mold, and the flow channel is arranged on the upper mold.

9. The casting mold for the automobile motor end cover according to claim 5, characterized in that: The inlet channel is arranged on the upper mold, and the flow channel is arranged on the lower mold.

10. The casting mold for the automobile motor end cover according to any one of claims 5 to 9, characterized in that: The size of the top opening of the inlet channel decreases from top to bottom.

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