Material positioning mechanism of die-casting die

Abstract

The utility model provides a material positioning mechanism of a die-casting die, and belongs to the technical field of die-casting dies. Comprising a guide column and a guide sleeve, the surface of the guide column is in sliding connection with the inner wall of the guide sleeve, the sealing plate is fixed at the end of the guide sleeve to form a sealed space in the guide sleeve, and airflow is prevented from being directly discharged from the end of the guide sleeve when the guide column is inserted into the guide sleeve. Through the arrangement of the sealing plate and the heat dissipation mechanism, the sealing plate is used for enabling the interior of the guide sleeve to form a space with one closed end, and the guide column is inserted into the guide sleeve, so that air in the guide sleeve enters the main runner, then enters the heat dissipation channel through the branch runner, and is discharged from the heat dissipation channel; heat generated by friction between the guide column and the heat dissipation strip and the guide sleeve is taken away in the airflow flowing process, heat dissipation of the guide column and the guide sleeve is achieved, abrasion between the guide column and the guide sleeve is reduced, the positioning precision of the movable mold and the fixed mold is guaranteed, and therefore the positioning precision of materials in a mold cavity is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting molds, and particularly relates to a material positioning mechanism for a die-casting mold. Background Art

[0002] A die-casting mold is a mold used for the die-casting process, mainly for the production of metal product materials. It is usually composed of a movable mold and a fixed mold. Guide columns are installed on the fixed mold, and guide sleeves are installed inside the movable mold. When the molds are closed, the guide columns are inserted into the guide sleeves to achieve the positioning of the two molds, making the closing of the movable mold and the fixed mold more accurate, and ensuring the quality of the metal products formed after the molten metal is injected into the mold cavity. The guide columns and guide sleeves are the material positioning mechanism of the die-casting mold.

[0003] When the common material positioning mechanism of a die-casting mold is in use, the positioning of the two molds is achieved by inserting the guide columns into the guide sleeves, thereby achieving the positioning of the metal products in the mold cavity. However, after long-term and multiple uses, heat will be generated due to friction at the positions of the guide columns and the guide sleeves. After the heat is generated, the wear between the guide columns and the guide sleeves will be aggravated. After the wear, the positioning accuracy of the movable mold and the fixed mold will be affected, and thus the positioning accuracy of the material will be affected. Therefore, the present application provides a material positioning mechanism for a die-casting mold to meet the requirements. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a material positioning mechanism for a die-casting mold to solve the technical problem that heat will be generated due to friction at the positions of the guide columns and the guide sleeves, which will aggravate the wear between the two, and after the wear, the positioning accuracy of the movable mold and the fixed mold will be affected, and thus the positioning accuracy of the material will be affected.

[0005] To solve the above technical problem, the utility model provides the following technical solutions:

[0006] A material positioning mechanism for a die-casting mold, including guide columns and guide sleeves, the surface of the guide columns is slidably connected to the inner wall of the guide sleeves, and further includes:

[0007] A sealing plate, the sealing plate is fixed at the end of the guide sleeve to form a closed space inside the guide sleeve, preventing the air flow from directly discharging from the end of the guide sleeve when the guide columns are inserted into the guide sleeves;

[0008] A heat dissipation mechanism, the heat dissipation mechanism includes a plurality of heat dissipation strips fixed on the circumferential surface of the guide columns, a chute is opened on the inner wall of the guide sleeve, the inner wall of the chute is slidably connected to the surface of the heat dissipation strips, a main runner is opened at the end of the guide columns, a sub-runner is opened on the side surface of the inner wall of the main runner, and a heat dissipation channel is opened at the end of the heat dissipation strips, and the heat dissipation channel is communicated with the sub-runner.

[0009] Preferably, the plurality of heat dissipation strips are annularly and arrayedly distributed with the center of the circle of the guide columns as the array center.

[0010] Preferably, the plane where one end of the heat dissipation strip away from the sealing plate is located is parallel to the plane where one end of the guide post away from the sealing plate is located.

[0011] Preferably, the inner wall of the main runner is provided with an inclined surface.

[0012] Preferably, a flow splitting block is fixed on the side of the inner wall of the main runner away from the sealing plate, and the surface of the flow splitting block is a curved surface.

[0013] Preferably, a flow guiding head is fixed at one end of the guide post close to the sealing plate, and the side surface of the flow guiding head is fixedly connected to the end of the heat dissipation strip.

[0014] Preferably, the inner wall of the flow guiding head is provided with a curved surface.

[0015] Preferably, the inner wall of the sub-runner is provided with a guiding surface for guiding the air flow.

[0016] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0017] In the above solution, through the arrangement of the sealing plate and the heat dissipation mechanism, the sealing plate is used to form a space with one end closed inside the guide sleeve. The guide post is inserted into the guide sleeve to allow the air inside the guide sleeve to enter the main runner, and then enter the heat dissipation channel through the sub-runner and be discharged from the heat dissipation channel. During the air flow process, the heat generated by the friction between the guide post, the heat dissipation strip and the guide sleeve is taken away, realizing the heat dissipation of the guide post and the guide sleeve, reducing the wear between the guide post and the guide sleeve, ensuring the positioning accuracy of the moving die and the fixed die, and thus ensuring the positioning accuracy of the material in the mold cavity.

[0018] Through the arrangement of the flow guiding head, when the guide post is inserted into the guide sleeve and compresses the air inside the guide sleeve, the air flow smoothly enters the main runner along the curved surface of the inner wall of the flow guiding head, realizing the guiding of the air flow, making the air flow more smooth, and thus ensuring the heat dissipation capacity of the guide post and the heat dissipation strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the specification, are further used to explain the principles of the present disclosure and enable those skilled in the relevant art to implement and use the present disclosure.

[0020] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 is a cross-sectional view of the main runner of the present utility model;

[0022] Figure 3 is a schematic diagram of the structure at the flow guiding head of the present utility model;

[0023] Figure 4 is a cross-sectional view of the heat dissipation strip of the present utility model.

[0024] [Reference Signs]

[0025] 1. Guide pillar; 2. Guide bushing; 3. Sealing plate; 4. Heat dissipation mechanism; 41. Heat dissipation strip; 42. Main runner; 43. Sub - runner; 44. Heat dissipation channel; 45. Sub - block; 46. Chute; 5. Deflector head.

[0026] As shown in the figure, in order to clearly implement the structure of the embodiments of the present utility model, specific structures and devices are marked in the figure. However, this is only for schematic purposes and is not intended to limit the present utility model to this specific structure, device, and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications still fall within the scope of the appended claims. Detailed Embodiment

[0027] The following describes in detail a material positioning mechanism of a die - casting mold provided by the present utility model in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well - known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present utility model.

[0028] It should be pointed out that in the specification, when referring to "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc., it indicates that the described embodiment may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining an embodiment to describe a specific feature, structure, or characteristic, implementing such a feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0029] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, allowing for the existence of other factors that may not be explicitly described.

[0030] As Figures 1 - 4 shown, an embodiment of the present utility model provides a material positioning mechanism of a die - casting mold, including a guide pillar 1 and a guide bushing 2. The guide pillar 1 is fixed on the stationary mold of the die - casting mold, and the guide bushing 2 is fixed inside the moving mold of the die - casting mold. The surface of the guide pillar 1 is slidably connected to the inner wall of the guide bushing 2, and further includes:

[0031] The sealing plate 3 is fixed at the end of the guide sleeve 2 to form a closed space inside the guide sleeve 2, preventing the air flow from directly discharging from the end of the guide sleeve 2 when the guide post 1 is inserted into the guide sleeve 2;

[0032] The heat dissipation mechanism 4 includes a plurality of heat dissipation strips 41 fixed on the circumferential surface of the guide post 1. The heat dissipation strips 41 are used to increase the contact area between the guide post 1 and the air, thereby improving the heat dissipation capacity of the guide post 1. A chute 46 is provided on the inner wall of the guide sleeve 2, and the inner wall of the chute 46 is slidably connected to the surface of the heat dissipation strip 41. The chute 46 is used for guiding when the heat dissipation strip 41 moves. Using the heat dissipation strip 41 can also improve the guiding ability of the guide post 1, that is, improve the positioning ability of the moving die and the fixed die, and thus improve the positioning ability of the material. A main runner 42 is provided at the end of the guide post 1, and a sub-runner 43 is provided on the side surface of the inner wall of the main runner 42. The number and distribution of the sub-runners 43 correspond to the number and distribution of the heat dissipation strips 41. A heat dissipation channel 44 is provided at the end of the heat dissipation strip 41, and the heat dissipation channel 44 is connected to the sub-runner 43.

[0033] As Figure 4 shown, in this embodiment, a plurality of heat dissipation strips 41 are annularly arrayed with the center of the circle of the guide post 1 as the array center. The number of the heat dissipation strips 41 can be increased or decreased according to the diameter of the guide post 1. Using the heat dissipation strips 41 can increase the contact area between the guide post 1 and the air and improve the heat dissipation capacity of the guide post 1.

[0034] As Figure 1 and Figure 2 shown, in this embodiment, the plane where one end of the heat dissipation strip 41 away from the sealing plate 3 is located is parallel to the plane where one end of the guide post 1 away from the sealing plate 3 is located, preventing the situation that the heat dissipation strip 41 fits with the fixed die of the die-casting mold and causing the air flow to be unable to discharge.

[0035] As Figure 2 shown, in this embodiment, the inner wall of the main runner 42 is provided with an inclined surface, and the inclined surface is used for guiding the passing air flow, so that the air flow smoothly enters the main runner 42, and an accelerating effect is generated on the passing air flow through the inclined surface, accelerating the air flow in the main runner 42 and making the air flow more smooth.

[0036] As Figure 2 shown, in this embodiment, a flow splitting block 45 is fixed on the side of the inner wall of the main runner 42 away from the sealing plate 3. The surface of the flow splitting block 45 is a curved surface. When the air flow flows to the flow splitting block 45, it automatically disperses around under the action of the curved surface of the flow splitting block 45, so that the air flow enters the sub-runner 43, effectively preventing the air flow from accumulating on the side of the inner wall of the main runner 42 away from the sealing plate 3.

[0037] As Figure 2 and Figure 3As shown, in this embodiment, a flow guiding head 5 is fixed to one end of the guide pillar 1 close to the sealing plate 3. The side surface of the flow guiding head 5 is fixedly connected to the end of the heat dissipation strip 41. The flow guiding head 5 is used for guiding when the guide pillar 1 extrudes the air inside the guide sleeve 2.

[0038] As Figure 2 and Figure 3 shown, in this embodiment, a curved surface is provided on the inner wall of the flow guiding head 5. The air flow is smoothly guided by the curved surface on the inner wall of the flow guiding head 5 into the main flow channel 42, making the air flow smoother.

[0039] As Figure 2 shown, in this embodiment, a guiding surface for guiding the air flow is provided on the inner wall of the sub-flow channel 43. The guiding surface is an inclined surface. The air flow smoothly enters the sub-flow channel 43 along the inclined surface, effectively reducing the accumulation of the air flow at the sub-flow block 45 and making the air flow smoother.

[0040] Working principle: The sealing plate 3 is fixed to the end of the guide sleeve 2 to form a closed space at one end inside the guide sleeve 2, preventing the air flow from directly discharging from the end of the guide sleeve 2 when the guide pillar 1 is inserted into the guide sleeve 2. When the moving die and the fixed die of the die-casting mold are closed, the guide pillar 1 is inserted into the guide sleeve 2, and the air inside the guide sleeve 2 enters the main flow channel 42 through the guidance of the flow guiding head 5. After being dispersed by the sub-flow block 45, it enters multiple sub-flow channels 43, and then enters the heat dissipation channels 44 inside multiple heat dissipation strips 41 through the multiple sub-flow channels 43 respectively and is discharged from the heat dissipation channels 44. During the air flow process, the heat generated by the friction between the guide pillar 1 and the heat dissipation strip 41 and the guide sleeve 2 is taken away, firstly realizing the heat dissipation of the guide pillar 1 and the heat dissipation strip 41. When the guide sleeve 2 contacts the guide pillar 1 and the heat dissipation strip 41, the heat is transferred to the guide pillar 1 and the heat dissipation strip 41, thereby realizing the heat dissipation of the guide sleeve 2, reducing the wear between the guide pillar 1 and the guide sleeve 2, ensuring the positioning accuracy of the moving die and the fixed die, and thus ensuring the positioning accuracy of the material in the mold cavity;

[0041] When the guide pillar 1 is separated from the guide sleeve 2, the pressure inside the guide sleeve 2 is less than the external atmospheric pressure. The external air enters the guide sleeve 2 through the heat dissipation channels 44, the sub-flow channels 43 and the main flow channel 42 in sequence. During the air flow process, the guide pillar 1, the heat dissipation strip 41 and the guide sleeve 2 are heat-dissipated again, further improving the heat dissipation ability of the guide pillar 1 and the guide sleeve 2, and thus reducing the wear between the two.

[0042] The present utility model covers any substitutions, modifications, equivalent methods and solutions made on the essence and scope of the present utility model. In order to enable the public to have a thorough understanding of the present utility model, specific details are described in detail in the above preferred embodiments of the present utility model. However, those skilled in the art can fully understand the present utility model without these detailed descriptions.

[0043] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A material positioning mechanism for a die-casting mold, comprising a guide pillar (1) and a guide bush (2), wherein the surface of the guide pillar (1) is slidably connected to the inner wall of the guide bush (2), and is characterized in that, Further included are: A sealing plate (3) which is fixed at the end of the guide sleeve (2) to form a closed space inside the guide sleeve (2) to prevent air flow from directly discharging from the end of the guide sleeve (2) when the guide post (1) is inserted into the guide sleeve (2); A heat dissipation mechanism (4), the heat dissipation mechanism (4) includes a plurality of heat dissipation fins (41) fixed on the circumferential surface of the guide post (1), a chute (46) is formed on the inner wall of the guide sleeve (2), the inner wall of the chute (46) is slidably connected to the surface of the heat dissipation fin (41), a main flow channel (42) is formed at the end of the guide post (1), a sub-flow channel (43) is formed on the side surface of the inner wall of the main flow channel (42), a heat dissipation channel (44) is formed at the end of the heat dissipation fin (41), and the heat dissipation channel (44) is communicated with the sub-flow channel (43).

2. The material positioning mechanism of the die-casting mold according to claim 1, characterized in that, The plurality of heat dissipation fins (41) are annularly arrayed with the center of the circle of the guide post (1) as the array center.

3. The material positioning mechanism of the die-casting mold according to claim 1, characterized in that, The plane where one end of the heat dissipation fin (41) away from the sealing plate (3) is located is parallel to the plane where one end of the guide post (1) away from the sealing plate (3) is located.

4. The material positioning mechanism of the die-casting mold according to claim 1, characterized in that, An inclined surface is provided on the inner wall of the main flow channel (42).

5. The material positioning mechanism of the die-casting mold according to claim 1, characterized in that A flow splitting block (45) is fixed on the side of the inner wall of the main flow channel (42) away from the sealing plate (3), and the surface of the flow splitting block (45) is a curved surface.

6. The material positioning mechanism of the die-casting mold according to claim 1, characterized in that, A flow guiding head (5) is fixed at one end of the guide post (1) close to the sealing plate (3), and the side surface of the flow guiding head (5) is fixedly connected to the end of the heat dissipation fin (41).

7. The material positioning mechanism of the die-casting mold according to claim 6, characterized in that, A curved surface is provided on the inner wall of the flow guiding head (5).

8. The material positioning mechanism of the die-casting mold according to claim 1, characterized in that, A guiding surface for guiding air flow is provided on the inner wall of the sub-flow channel (43).

Images