Extrusion core device with point cooling function

Abstract

An extrusion core device with point cooling comprises an oil cylinder connected with an oil cylinder connector, a piston rod at the front end of the oil cylinder is connected with a flange connector, an extrusion core is fixed on the flange connector, and the extrusion core is connected with a water outlet pipe and a water inlet pipe. According to the utility model, the cooling and solidification time of the extruded position of a casting can be shortened, the temperature of the extrusion core is reduced, and thermal expansion wear is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to foundry technology field, specifically a kind of extrusion core device with point cold. BACKGROUND

[0002] In the production process of casting, due to the complexity of product structure and shape, the difference in casting wall thickness, and the difference in temperature field inside the entire mold cavity, local shrinkage may occur inside the casting during the cooling process. This shrinkage can seriously affect the internal quality of the casting. If the shrinkage position of the product has high oil pressure, oil leakage may occur. Based on the above problems, it is required that the casting does not allow internal shrinkage at the position with high oil pressure. Therefore, a local extrusion core can be used to extrude the local position during the pressure maintaining process of the casting to eliminate the internal shrinkage defect of the casting. During the working process of the extrusion core, the head contacts high-temperature aluminum alloy metal. During the extrusion process, heat is generated due to the extrusion of the aluminum liquid. To address this issue, the temperature of the extrusion core is lowered as much as possible to promote rapid cooling and solidification of the local position of the casting after extrusion, while the temperature of the core body is lowered to reduce the thermal expansion wear on the core and prolong the service life of the core. SUMMARY

[0003] Therefore, the utility model aims to provide an extrusion core device with point cold, which can shorten the cooling and solidification time of the extruded position of the casting, lower the temperature of the extrusion core itself, and reduce thermal expansion wear.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] An extrusion core device with point cold includes an oil cylinder connected to an oil cylinder joint, a front-end piston rod of the oil cylinder connected to a flange joint, a fixed extrusion core on the flange joint, and a water outlet pipe and a water inlet pipe connected to the extrusion core.

[0006] In some embodiments, the extrusion core is fixedly installed on the flange joint by a core anti-rotation pressing plate.

[0007] In some embodiments, it further includes an extrusion guide sleeve fixedly installed on the mold, and the extrusion core is arranged in the extrusion guide sleeve.

[0008] In some embodiments, the extrusion guide sleeve is fixedly installed on the mold by an extrusion guide sleeve pressing plate.

[0009] In some embodiments, it further includes a core center point cold pipe installed in the extrusion core.

[0010] Compared with the prior art, the extrusion core device with point cold has the following advantages:

[0011] The extrusion core device with spot cooling disclosed by the utility model can be used for solving the local shrinkage defect of die casting products; the mechanism works in the pressure maintaining stage after filling in the die casting production process, drives the local extrusion core to move forward through the telescopic movement of the oil cylinder, realizes the secondary extrusion of the local position in the pressure maintaining stage of the whole casting, and the extrusion core is cooled through the spot cooling center pipe during the working process, which can shorten the cooling and solidification time of the extruded position of the casting, reduce the temperature of the extrusion core itself, and reduce the thermal expansion wear. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings, which form a part of this description, are included to provide a further understanding of the utility model and are incorporated herein for explanation by reference. The schematic embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0013] Figure 1 It is a front view of the extrusion core device with spot cooling of the utility model.

[0014] Figure 2 It is a left view of the extrusion core device with spot cooling of the utility model.

[0015] Figure 3 It is a front view of the extrusion guide sleeve of the extrusion core device with spot cooling of the utility model.

[0016] Figure 4 It is a left view of the extrusion guide sleeve of the extrusion core device with spot cooling of the utility model.

[0017] Figure 5 It is a center spot cooling pipe installation schematic view of the extrusion core device with spot cooling of the utility model.

[0018] BRIEF DESCRIPTION OF DRAWINGS

[0019] 1-oil cylinder; 2-extrusion core; 3-extrusion guide sleeve; 4-extrusion guide sleeve pressing plate; 5-oil cylinder joint; 6-water outlet pipe; 7-water inlet pipe; 8-core anti-rotation pressing plate; 9-guide sleeve; 10-core center spot cooling pipe; 11-flange joint. DETAILED DESCRIPTION

[0020] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0021] The technical solutions of the utility model will be described clearly and completely below with reference to the drawings and in combination with the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] The utility model discloses an extrusion core device with point cooling will be described below in combination with the embodiments. Figures 1 to 5 The utility model discloses an extrusion core device with point cooling will be described below in combination with the embodiments.

[0023] An extrusion core device with point cooling, comprising the following components: oil cylinder 1, extrusion core 2, extrusion guide sleeve 3, extrusion guide sleeve pressing plate 4, oil cylinder joint 5, water outlet pipe 6, water inlet pipe 7, core anti-rotation pressing plate 8, guide sleeve 9, core center point cooling pipe 10, flange connector 11.

[0024] Extrusion guide sleeve 3 is installed in the mold, and is fixed on the mold by extrusion guide sleeve pressing plate 4. The combined structure can provide guidance and positioning for extrusion core 2 through the fixation of extrusion guide sleeve 3.

[0025] Core center point cooling pipe 10 is installed in extrusion core 2, so that the middle point cooling channel is smooth, and the two component head parts are welded and sealed to avoid cooling water overflow.

[0026] Extrusion core 2 is installed into the groove of flange connector 11, and is fastened and pressed by core anti-rotation pressing plate 8. Oil cylinder joint 5 is installed on oil cylinder 1, and oil cylinder 1 is installed on the other end of flange connector 11. Oil cylinder 1, flange connector 11 and extrusion core 2 are assembled into guide sleeve 9 which has been fixed on the mold, and rough positioning assembly is performed until extrusion core 2 is successfully installed into extrusion guide sleeve 3. Then, water outlet pipe 6 and water inlet pipe 7 are respectively installed on extrusion core 2 through the mold cooling water pipe through hole, and all the components are completed according to the general assembly drawing.

[0027] The working process is as follows. Component oil cylinder 1 realizes front end piston rod movement through oil inlet and oil outlet of oil cylinder joint 5. The piston rod drives flange connector 11 and extrusion core 2 fixed thereon to move forward and backward in extrusion guide sleeve 3, so as to realize the extrusion function. During the extrusion process of extrusion core 2, cooling water cools extrusion core 2 through water inlet pipe 7 and water outlet pipe 6. The whole mechanism improves the internal quality of the casting through the extrusion function, and also makes the extrusion component movement smooth and the service life improved through cooling.

[0028] Compared with the prior art, the extrusion core device with point cooling of the utility model has the following advantages:

[0029] The utility model discloses a kind of with spot cold extrusion core device, which can be used to solve partial shrinkage defect of die casting product;The mechanism works in the die casting production process, and works in the pressure maintaining stage after filling, drives partial extrusion core to move forward by telescopic movement of oil cylinder, realizes the secondary extrusion to partial position in the whole casting pressure maintaining stage;During the working process of extrusion core, cooling is carried out by spot cold center tube, so that the cooling solidification time of casting extruded position is shortened, and the temperature of extrusion core itself is reduced, and thermal expansion wear is reduced.

[0030] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation structure and operation, and therefore cannot be understood as a limitation on the protection scope of the utility model.

[0031] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0032] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; It can be mechanically connected, or it can be electrically connected or can communicate with each other; It can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0033] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A cold spot extrusion core device, characterized by, The hydraulic cylinder includes a hydraulic cylinder connected with a hydraulic cylinder joint, a front end piston rod connected flange joint, and an extrusion core fixed on the flange joint.

2. A cold-spot extrusion core device according to claim 1, wherein The extrusion core is fixed and installed on the flange joint through the core anti-rotation pressing plate.

3. The cold-spot extruded core device of claim 1, wherein, The extrusion guide sleeve fixedly installed on the mold is also included, and the extrusion core is arranged in the extrusion guide sleeve.

4. The cold-spot extrusion core apparatus of claim 3, wherein, The extrusion guide sleeve is fixedly installed on the mold through the extrusion guide sleeve pressing plate.

5. The cold-spot extruded core device of claim 3, wherein, The core center point cold pipe installed in the extrusion core is also included.

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