Extrusion pin structure for die-casting die

Abstract

The utility model discloses an extrusion pin structure for a die-casting die, which comprises an oil cylinder, a connecting rod, a fixing block and an extrusion pin, the oil cylinder is connected with the connecting rod, the connecting rod is connected with the extrusion pin through the fixing block, and an anti-locking structure is mounted on the fixing block; the anti-locking structure comprises a protection structure and a lubricating structure, wherein the protection structure is arranged between the extrusion pin and the die and used for ensuring matching precision and reducing gaps, and the lubricating structure is used for reducing friction between the protection structure and the die. By means of the mode, according to the extrusion pin structure for the die-casting die, the anti-jamming structure is installed on the fixing block of the structure, the situation that an extrusion pin is jammed can be avoided, the risk of equipment damage is reduced, and normal production is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the die processing field especially is concerned with a kind of extrusion pin structure for die casting die. BACKGROUND

[0002] In the die casting process, due to the volume shrinkage of metal during solidification, shrinkage cavity is easily caused. Specifically, the generation of shrinkage cavity mainly has the following reasons:

[0003] 1. Metal solidification shrinkage: when metal changes from liquid to solid, volume shrinkage usually occurs, which can cause voids or shrinkage cavities in the casting, especially in the thick wall part of the casting;

[0004] 2. Non-uniform cooling: during the die casting process, if the cooling speed of different parts of the casting is too different, the metal in some areas may solidify early, while the metal in other areas is still in a liquid state, resulting in shrinkage cavities after the liquid metal solidifies;

[0005] 3. Inadequate filling: if the metal liquid does not fully fill the mold during casting, especially in complex shapes or thin-walled parts, it may lead to the formation of shrinkage cavities;

[0006] 4. Gas entrainment: during the casting process, if gas cannot be effectively discharged, it may form bubbles when the metal solidifies, ultimately leading to shrinkage cavities;

[0007] 5. Mold temperature: the temperature of the mold has a great influence on the cooling speed of the casting. If the mold temperature is too low, the metal liquid may cool rapidly after injection, increasing the risk of shrinkage cavities.

[0008] The extrusion pin can guide the smooth flow of metal liquid during the squeeze casting process, avoiding the formation of vortex or dead angle during the flow process, which helps to reduce gas entrainment and non-uniform cooling, thereby helping to solve the problem of shrinkage cavities and ensuring the quality and performance of the casting.

[0009] During the extrusion process, the extrusion pin is in contact with the mold, and there is a lack of proper lubrication between them, which can easily increase friction, making the extrusion pin and the mold fit tightly, causing the extrusion pin to be stuck, causing other equipment components to be unevenly stressed or overloaded, increasing the risk of equipment damage, and additional time and cost are required to repair or replace damaged parts, resulting in long-term shutdown of the production line and affecting normal production. UTILITY MODEL CONTENTS

[0010] The utility model mainly solves the technical problem of providing an extrusion pin structure for die casting die, which can avoid the situation of extrusion pin being stuck.

[0011] To solve the above technical problems, one technical scheme of the utility model is: provide a kind of extrusion pin structure for die casting die, including oil cylinder, connecting rod, fixed block and extrusion pin, the oil cylinder is connected with the connecting rod, the connecting rod is connected with the extrusion pin by the fixed block, anti-jamming structure is installed on the fixed block;

[0012] The anti-jamming structure includes a protection structure arranged between the extrusion pin and the mold for ensuring fitting accuracy and reducing gap, and a lubricating structure for reducing friction between the protection structure and the mold.

[0013] In a preferred embodiment of the utility model, an adapter block is arranged in the fixed block, and the connecting rod and the extrusion pin are respectively connected to the two ends of the adapter block.

[0014] In a preferred embodiment of the utility model, a limiting ring that cooperates with the adapter block is arranged at the fixed block opening on the side of the extrusion pin.

[0015] In a preferred embodiment of the utility model, the protection structure includes a protective sleeve, which is fixedly installed on the left side of the fixed block and covers the outer wall of the extrusion pin.

[0016] In a preferred embodiment of the utility model, the lubricating structure includes an oil inlet and an oil guide pipe, the oil inlet is arranged at the connection between the protective sleeve and the fixed block, and the oil guide pipe is arranged in the side wall of the protective sleeve.

[0017] In a preferred embodiment of the utility model, the oil guide pipe is arranged in a spiral shape in the protective sleeve, and a plurality of oil outlets are arranged on the inner and outer walls of the protective sleeve, and the shape of the oil outlet cooperates with the shape of the oil guide pipe.

[0018] The utility model has the advantages that the extrusion pin structure for die casting die of the utility model has anti-jamming structure installed on the fixed block, which can avoid the situation of extrusion pin jamming, reduce the risk of equipment damage, and ensure normal production. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view of the extrusion pin structure for die casting die.

[0020] Figure 2 It is Figure 1 A local enlarged view of position A.

[0021] The labels of components in the drawings are as follows: 1, oil cylinder; 2, connecting rod; 3, fixed block; 4, extrusion pin; 5, adapter block; 6, protective sleeve; 7, oil inlet; 8, oil guide pipe; 9, oil outlet; 10, limiting ring. DETAILED DESCRIPTION

[0022] The advantages and features of the present application will be more apparent from the following detailed description of the preferred embodiments of the present application, so as to make the protection scope of the present application more clearly defined.

[0023] According to Figure 1 and Figure 2 , a structure of an extrusion pin for a die-casting die is provided, which comprises an oil cylinder 1, a connecting rod 2, a fixed block 3 and an extrusion pin 4, the oil cylinder 1 is connected with the connecting rod 2, the connecting rod 2 is connected with the extrusion pin 4 through the fixed block 3, the fixed block 3 is used to help the extrusion pin 4 to keep stable positioning during extrusion, to ensure that it will not deviate or shift during work, to ensure the extrusion precision and product quality, and at the same time, to prevent the extrusion pin 4 from rotating or twisting during work, to ensure that it works according to the predetermined direction and position, and to avoid failure or damage caused by rotation.

[0024] The fixed block 3 is provided with an anti-lock structure, which can avoid the situation that the extrusion pin 4 is locked, reduce the risk of equipment damage, and ensure normal production.

[0025] The anti-lock structure comprises a protection structure arranged between the extrusion pin 4 and the die for ensuring the fitting precision and reducing the gap, and a lubricating structure for reducing the friction between the protection structure and the die.

[0026] The fixed block 3 is provided with an adapter block 5, the connecting rod 2 and the extrusion pin 4 are respectively connected with two ends of the adapter block 5, and the adapter block 5 is used for connecting the connecting rod 2 and the extrusion pin 4 coaxially.

[0027] The fixed block 3 located on the side of the extrusion pin 4 is provided with a limiting ring 10 matched with the adapter block 5, and the limiting ring 10 is used for limiting the adapter block 5.

[0028] The protection structure comprises a protection sleeve 6, the protection sleeve 6 is fixedly installed on the left side of the fixed block 3 and covers the outer wall of the extrusion pin 4, and the protection sleeve 6 is used to ensure the fitting precision between the extrusion pin 4 and the die and to reduce the gap.

[0029] The lubricating structure comprises an oil inlet 7 and an oil guide pipe 8, the oil inlet 7 is arranged at the connection between the protection sleeve 6 and the fixed block 3, and the oil guide pipe 8 is arranged in the side wall of the protection sleeve 6, and an external oil feeding device adds oil into the oil guide pipe 8 through the oil inlet 7.

[0030] The oil guide pipe 8 is arranged in the protective sleeve 6 in a spiral shape, and the inner and outer walls of the protective sleeve 6 are provided with a plurality of oil outlet holes 9, the shape of the oil outlet hole 9 is matched with the shape of the oil guide pipe 8, the spiral-shaped oil guide pipe 8 is matched with the oil outlet hole 9, so that when the extrusion pin 4 and the protective sleeve 6 and the protective sleeve 6 and the mold move relatively, the outer wall of the protective sleeve 6 and the outer wall of the extrusion pin 4 can be completely lubricated, a lubricating film is formed, the friction coefficient is reduced, the energy consumption is reduced, the working efficiency is improved, and the wear of the equipment during extrusion is reduced.

[0031] Compared with the prior art, the extrusion pin structure for the die-casting die has the anti-stuck structure mounted on the fixing block, the anti-stuck structure can avoid the extrusion pin from being stuck, reduces the risk of equipment damage, and ensures normal production.

[0032] In the description of the utility model, it should be explained that the components are general standard components or components known by those skilled in the art, the structure and principle of which can be known by the technical personnel through the technical manual or through the conventional test method, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, which 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, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0033] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion obtained by using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. An extrusion pin structure for a die-casting mold, comprising a cylinder, a connecting rod, a fixing block, and an extrusion pin, wherein the cylinder is connected to the connecting rod, and the connecting rod is connected to the extrusion pin through the fixing block, characterized in that, The fixed block is provided with an anti-jamming structure; The anti-jamming structure comprises a protection structure arranged between the extrusion pin and the mold for ensuring fitting accuracy and reducing gap, and a lubricating structure for reducing friction between the protection structure and the mold.

2. The extrusion pin structure for a die casting mold according to claim 1, wherein An adapter block is arranged in the fixed block, and the connecting rod and the extrusion pin are respectively connected to two ends of the adapter block.

3. The extrusion pin structure for a die casting mold according to claim 2, wherein The fixed block opening on the side of the extrusion pin is provided with a limiting ring matched with the adapter block.

4. The extrusion pin structure for a die casting mold according to claim 1, wherein The protection structure comprises a protection sleeve fixedly installed on the left side of the fixed block and sleeved on the outer wall of the extrusion pin.

5. The extrusion pin structure for a die casting mold according to claim 4, wherein The lubricating structure comprises an oil inlet and an oil guide pipe, the oil inlet is arranged at the connection between the protection sleeve and the fixed block, and the oil guide pipe is arranged in the side wall of the protection sleeve.

6. The extrusion pin structure for a die casting mold according to claim 5, wherein The oil guide pipe is arranged in a spiral shape in the protection sleeve, the inner and outer walls of the protection sleeve are provided with a plurality of oil outlets, and the shape of the oil outlet is matched with the shape of the oil guide pipe.

Images