Cooling device of die-casting die

Abstract

The utility model discloses a cooling device of a die-casting die, which comprises a guide pillar and a guide sleeve, the inner wall of the guide sleeve is provided with an air flow groove, the air flow groove extends from the bottom end of the guide sleeve to the top end of the guide sleeve along the axial direction of the guide sleeve, the bottom of the guide sleeve is provided with an expansion elastic sheet, and the initial state of the expansion elastic sheet is an upwards raised arch. After the guide column is inserted into the guide sleeve, a cavity is formed in the inner bottom of the guide sleeve, the guide column continues to move downwards, and air in the cavity extrudes the bulged expansion elastic piece, so that air in an air cavity formed by the expansion elastic piece and the guide sleeve moves upwards along the air flow groove and takes away heat on the inner wall of the guide column and the inner wall of the guide sleeve; on the contrary, when the guide pillar moves upwards, the expansion elastic piece is sucked up, the outside air is accelerated to flow into the air cavity along the air flow groove, and the guide pillar and the guide sleeve are cooled.

Description

Technical Field

[0001] The utility model relates to the technical field of die casting moulds, and more specifically, to a cooling device for the die casting moulds. Background Art

[0002] The die-casting mold includes an upper mold and a lower mold. The upper mold and the lower mold are closed to form the metal parts in the mold cavity. The closing and opening actions of the upper and lower molds are positioned by the guide pins and guide sleeves. The guide pins slide in the guide sleeves. During the sliding process between the outer wall of the guide pins and the inner wall of the guide sleeves, heat is generated due to friction. Because the closing and opening actions of the upper and lower molds are relatively frequent, the heat generated by friction is relatively high, which affects the stress of the guide pins and the guide sleeves, accelerates the wear of the guide pins and the guide sleeves, and reduces the service life of the guide pins and the guide sleeves. Therefore, it is necessary to install a cooling device on the connection between the traditional guide sleeves and the guide pins. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the conventional guide pin and guide sleeve generate high heat due to friction, which affects the service life of the guide pin and guide sleeve, thereby providing a cooling device for a die-casting mold to solve the above problem.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A cooling device for a die-casting mold includes a guide column and a guide sleeve. An air flow groove is provided on the inner wall of the guide sleeve. The air flow groove extends from the bottom end of the guide sleeve along the axial direction of the guide sleeve to the top end of the guide sleeve. An expansion spring is provided at the bottom of the guide sleeve. The initial state of the expansion spring is an upwardly protruding arch.

[0006] Preferably, a slot is provided on the inner wall of the guide sleeve near its bottom end, and the expansion spring is engaged with the slot.

[0007] Preferably, the expansion spring comprises a hemispherical expansion piece made of rubber and plastic material and a support ring made of metal material, the edge of the expansion piece is fixedly connected to the support ring, and the support ring is engaged with the slot.

[0008] Preferably, a plurality of annular grooves are formed on the outer circumferential surface of the guide post, and the plurality of annular grooves are coaxially arranged with the guide post and are evenly distributed along the axial direction of the guide post.

[0009] Preferably, a plurality of through holes are formed on the tube wall of the guide sleeve, and lubricating and cooling parts are embedded in the plurality of through holes.

[0010] Preferably, the lubricating cooling member is made of graphite particles with grease added and extruded into a cylindrical or pillar shape.

[0011] The beneficial effect of the utility model is that when the guide post is inserted into the guide sleeve, a cavity is formed at the inner bottom of the guide sleeve, and the guide post continues to move downward, and the air in the cavity squeezes the raised expansion spring piece, so that the gas in the air cavity formed by the expansion spring piece and the guide sleeve moves upward along the air flow groove and takes away the heat on the inner wall of the guide post and the guide sleeve; on the contrary, when the guide post moves upward, the expansion spring piece is sucked up, accelerating the outside air to flow into the air cavity along the air flow groove, thereby cooling the guide post and the guide sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the cooling device for the die casting mold Figure 1 ;

[0013] Figure 2 Schematic diagram of the cooling device for the die casting mold Figure 2 ;

[0014] Figure 3 is a schematic diagram of an expansion shrapnel;

[0015] In the figure: 1, guide column; 11, annular groove; 2, guide sleeve; 21, air flow groove; 22, through hole; 23, lubrication and cooling part; 3, expansion spring; 31, expansion sheet; 32, support ring. DETAILED DESCRIPTION

[0016] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0017] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0018] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0019] according to Figure 1-3As shown, a cooling device for a die-casting mold includes a guide post 1 and a guide sleeve 2. An airflow groove 21 is provided on the inner wall of the guide sleeve 2. The airflow groove 21 extends from the bottom end of the guide sleeve 2 along the axial direction of the guide sleeve 2 to the top end of the guide sleeve 2. An expansion spring 3 is provided at the bottom of the guide sleeve 2. The initial state of the expansion spring 3 is an upwardly raised arch. When the guide post 1 is inserted into the guide sleeve 2, a cavity is formed at the inner bottom of the guide sleeve 2. The guide post 1 continues to move downward, and the air in the cavity squeezes the raised expansion spring 3, so that the gas in the air cavity formed by the expansion spring 3 and the guide sleeve 2 moves upward along the airflow groove 21, and takes away the heat on the inner wall of the guide post 1 and the guide sleeve 2; on the contrary, when the guide post 1 moves upward, the expansion spring 3 is sucked up, accelerating the outside air to flow into the air cavity along the airflow groove 21, and cooling the guide post 1 and the guide sleeve 2.

[0020] according to Figure 1-3 As shown, a plurality of annular grooves 11 are provided on the outer circumferential surface of the guide post 1, and the plurality of annular grooves 11 are coaxially arranged with the guide post 1 and are evenly spaced along the axial direction of the guide post 1. A clamping groove is provided on the inner wall of the guide sleeve 2 near its bottom end, and the expansion spring piece 3 is clamped with the clamping groove. The expansion spring piece 3 includes a hemispherical expansion piece 31 made of rubber and plastic material and a support ring 32 made of metal material. The edge of the expansion piece 31 is fixedly connected with the support ring 32, and the support ring 32 is clamped with the clamping groove.

[0021] according to Figure 1-3 As shown, a plurality of through holes 22 are provided on the tube wall of the guide sleeve 2, and a lubricating and cooling member 23 is embedded in each of the plurality of through holes 22. The lubricating and cooling member 23 is made of graphite particles with grease added and extruded into a cylindrical or columnar shape.

[0022] according to Figure 1-3 As shown, the height of the airflow groove 21 is consistent with the height of the guide sleeve 2, the bottom of the guide sleeve 2 is fixedly connected to the lower mold, the expansion spring piece 3 is arranged at the bottom of the guide sleeve 2, and is spaced apart from the lower mold, and the spacing space is provided for the expansion piece 31 to deform. In addition, the spacing space and the airflow groove 21 are in a conductive state to enable air to enter and exit the spacing space.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0025] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cooling device for a die-casting mold, comprising a guide column (1) and a guide sleeve (2), characterized in that: An air flow groove (21) is provided on the inner wall of the guide sleeve (2), and the air flow groove (21) extends from the bottom end of the guide sleeve (2) along the axial direction of the guide sleeve (2) to the top end of the guide sleeve (2). An expansion spring sheet (3) is provided at the bottom of the guide sleeve (2), and the expansion spring sheet (3) is in an upwardly raised arched shape in an initial state.

2. The cooling device for the die-casting mold according to claim 1, characterized in that: A slot is provided on the inner wall of the guide sleeve (2) near its bottom end, and the expansion spring sheet (3) is engaged with the slot.

3. The cooling device for the die-casting mold according to claim 2, characterized in that: The expansion spring (3) comprises a hemispherical expansion piece (31) made of a rubber-plastic material and a support ring (32) made of a metal material, the edge of the expansion piece (31) being fixedly connected to the support ring (32), and the support ring (32) being snap-fitted to the slot.

4. The cooling device for the die-casting mold according to claim 3 is characterized in that: A plurality of annular grooves (11) are provided on the outer circumferential surface of the guide column (1); the plurality of annular grooves (11) are coaxially arranged with the guide column (1) and are evenly spaced along the axial direction of the guide column (1).

5. The cooling device for the die-casting mold according to claim 4, characterized in that: A plurality of through holes (22) are provided on the tube wall of the guide sleeve (2), and lubricating and cooling parts (23) are embedded in each of the plurality of through holes (22).

6. The cooling device for the die-casting mold according to claim 5, characterized in that: The lubricating cooling member (23) is made of graphite particles with grease added thereto and extruded into a cylindrical or columnar shape.

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