Reusable material pipe for cold chamber die casting machine

Abstract

The utility model discloses a reusable material pipe for a cold chamber die casting machine, which comprises a cylindrical material pipe, a feed port for pouring molten aluminum is arranged on the circumferential side surface of one end of the material pipe, a detachable insert is arranged below the feed port, and an insert position surrounding edge of the insert is hermetically connected with the material pipe. The material pipe can be continuously used by replacing the insert, is low in maintenance cost and short in maintenance time, does not need to stop production for a long time, and greatly reduces the production cost of an enterprise.

Description

Technical Field

[0001] This utility model relates to the field of die-casting parts technology, specifically to a reusable feed tube for a cold chamber die-casting machine. Background Technology

[0002] In the die-casting process, high-temperature aluminum liquid is typically injected into the mold using a feed tube. Existing aluminum castings commonly suffer from the following problems during die-casting: Since the temperature of the molten aluminum usually reaches over 650℃, after approximately 30,000 uses (about 25 days), the inner diameter of the feed tube and the surface in contact with the molten aluminum will become severely concave. The molten aluminum remaining in the concave areas solidifies and can jam the injection head, rendering the feed tube unusable. However, the price of feed tubes varies from several thousand to tens of thousands of yuan depending on the size, making direct replacement expensive. Currently, a common repair solution is to insert a liner into the feed tube, but this requires welding and cannot be replaced again. The repair cost is nearly half the price of a new feed tube, and the size needs to be reduced (e.g., from an inner diameter of 80mm to 70mm), and the repair time is also long (about 15 days), significantly increasing the company's production costs. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies and provide a reusable feed tube for cold chamber die casting machines. This feed tube can be reused by replacing inserts, and it features low maintenance costs, short maintenance time, and no need for prolonged production downtime, significantly reducing the company's production costs.

[0004] The technical solution adopted by this utility model is: a reusable material tube for a cold chamber die casting machine, including a cylindrical material tube, an inlet for pouring molten aluminum is provided on the circumferential side of one end of the material tube, and a detachable insert is provided below the inlet, the insert position of the insert being sealed and connected to the material tube.

[0005] Preferably, the edge of the insert is inclined inward from top to bottom, with an inclination of 1-3°.

[0006] Preferably, the edge of the insert is inclined inward from top to bottom, with an inclination of 2°.

[0007] Preferably, the feed tube is provided with an insert mounting port for inserting the insert, and the insert is detachably connected to the feed tube by screws.

[0008] Preferably, the feed tube has a mounting through hole for screws to pass through at one end near the injection point, and the front end face of the insert has a screw hole for screw locking at a position corresponding to the mounting through hole.

[0009] Preferably, the mounting through hole has a stepped portion on the side near the end face for engaging the nut.

[0010] Preferably, the top of the insert is a concave arc surface with the same center and radius as the inner side of the tube.

[0011] Preferably, the size of the concave arc surface is adapted to the size of the lower opening of the feed inlet.

[0012] Preferably, the bottom of the insert is an outwardly concave arc surface with the same center and radius as the outer side of the tube.

[0013] Preferably, the two inner sides corresponding to the axial direction of the feed inlet are guide slopes that facilitate the collection and flow of molten aluminum into the feed pipe, and the guide slopes are inclined from top to bottom and from outside to inside.

[0014] Preferably, the feed tube has a circumferential flange that extends radially outward at one end near the die-casting mold and is connected to the die-casting mold.

[0015] This utility model has the following advantages compared with the prior art:

[0016] 1. Short maintenance time and no production stoppage: The removable insert catches the residual solidified aluminum liquid. When the injection head gets stuck, the damaged insert can be removed directly, a spare insert can be installed, and then it can be used immediately after being fixed with screws. The replacement time is short and there is no need for long-term production stoppage for maintenance.

[0017] 2. Low maintenance cost: The inserts of this material tube can be replaced multiple times, and the processing technology of the inserts is simple, easy to purchase and inexpensive, which can significantly reduce the production cost of enterprises. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is an exploded view of the structure of this utility model.

[0020] Figure 3 This is a top view of the structure of this utility model.

[0021] Figure 4 This is a longitudinal section view of this utility model.

[0022] Figure 5 This is a schematic diagram of the reusable feed tube of this utility model in use.

[0023] Figure 6 This is a schematic diagram showing the installation positions of the reusable feed tube and die-casting mold of this utility model.

[0024] The labels in the diagram indicate:

[0025] 1-Feed pipe, 11-Inlet, 111-Guide slope, 12-Insert mounting port, 13-Mounting through hole, 131-Stepped section, 14-Circumferential flange, 2-Insert, 21-Insert position edge, 22-Screw hole, 23-Inner concave arc surface, 24-Outer concave arc surface, 3-Screw, 4-Injection head, 5-Die casting mold, 6-Aluminum liquid dispensing ladle, 7-High temperature aluminum liquid. Detailed implementation method:

[0026] To enhance understanding of this utility model, it will be further described in detail below with reference to embodiments and accompanying drawings. This utility model can be implemented in the following ways:

[0027] Reference Figure 1-6 A reusable feed tube for a cold chamber die casting machine includes a cylindrical feed tube 1, the interior of which is an aluminum molten metal chamber for containing high-temperature molten aluminum. An inlet 11 for pouring molten aluminum is provided on the circumferential side of one end of the feed tube 1, and a removable insert 2 is provided below the inlet 11. The insert 2's insert edge 21 is sealed to the feed tube 1. In this embodiment, the feed tube 1 utilizes the removable insert 2 as a recessed position in contact with the high-temperature molten aluminum, catching any residual solidified molten aluminum. When solidified molten aluminum jams the injection head 4, the damaged insert 2 can be directly removed, replaced with a spare insert 2, and then secured with screws for immediate use.

[0028] To achieve a sealed connection between the insert edge 21 and the feed tube 1, refer to Figure 4 The insert location perimeter 21 is inclined inward from top to bottom, with an inclination of 1-3°. In this embodiment, the insert location perimeter 21 is inclined inward from top to bottom with an inclination of 2°, which can effectively prevent high-temperature molten aluminum from falling from the contact position between the insert 2 and the feed tube 1. In addition, this insert location can be processed by wire cutting, which is simple and has low processing cost.

[0029] To achieve a detachable connection of the insert 2, the feed tube 1 is provided with an insert mounting port 12 for insert 2 to be inserted. The insert 2 is detachably connected to the feed tube 1 by a screw 3. Specifically, the feed tube 1 has a mounting through hole 13 for the screw 3 to pass through at the end near the injection point. The front end face of the insert 2 has a screw hole 22 for the screw 3 to be tightened at a position corresponding to the mounting through hole 13. The mounting through hole 13 has a stepped portion 131 for engaging a nut on the side near the end face. The screw 3 used in this embodiment is an M8 screw. During installation, the insert 2 is inserted into the insert mounting port 12, and the screw hole 22 on its front end face is aligned with the mounting through hole 13 of the feed tube 1. Then, the screw 3 is passed through the mounting through hole 13 and tightened with the screw hole 22. The operation is simple and quick, with short maintenance time and no production downtime required.

[0030] To ensure unobstructed flow of molten aluminum during injection, the top of the insert 2 is a concave arc surface 23 with the same center and radius as the inner side of the feed tube 1. The concave arc surface 23 connects smoothly with the inner side of the feed tube 1, thus not affecting the injection of molten aluminum. Furthermore, the size of the concave arc surface 23 is adapted to the size of the lower opening of the feed inlet 11, allowing the insert 2 to receive as much solidified molten aluminum as possible, ensuring that the solidified molten aluminum blocking the injection head 4 can be removed when replacing the insert 2. The two inner sides corresponding to the axial direction of the feed inlet 11 are guide slopes 111 to facilitate the flow of molten aluminum into the feed tube 1. These guide slopes 111 slope from top to bottom and from the outside to the inside. The design of the guide slopes 111 allows the high-temperature molten aluminum to fall onto the concave arc surface 23 as much as possible.

[0031] Furthermore, the bottom of the insert 2 is a concave arc surface 24 with the same center and radius as the outer side of the material tube 1, so that the concave arc surface 24 and the outer side of the material tube 1 form a smooth arc surface, thus not affecting the use of other parts of the die-casting machine. The material tube 1 has a circumferential flange 14 that extends radially outward at one end near the die-casting mold 5 and is connected to the die-casting mold 5, which facilitates the installation of the material tube 1.

[0032] The reusable feed tube in this embodiment is installed in the following position: Figure 6 One end is connected to the injection head 4, and the other end is connected to the die-casting mold 5; above the feed inlet 11 is the aluminum liquid feeding ladle 6, and the injection direction of the high-temperature aluminum liquid 7 is as follows. Figure 6 As indicated by the arrow, the method for replacing insert 2 to repair tube 1 in this embodiment is simple. When the injection head 4 gets stuck, remove the damaged insert 2, replace it with a spare insert 2, and secure it with screws 3 for immediate use. Furthermore, insert 2 can be replaced multiple times, resulting in low repair costs and short replacement time. This repair method allows for long-term use with good results, solving the problems of production stoppage and high repair costs associated with ordinary tubes suffering inner diameter surface erosion and dent damage.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A reusable runner for a cold chamber die casting machine, characterized in that, The application relates to a cylinder-shaped material pipe (1), which is provided with an inlet (11) for pouring liquid aluminum on the circumferential side of one end of the material pipe (1), and a detachable insert (2) is arranged below the inlet (11), and the insert (2) is sealedly connected with the material pipe (1) through an insert circumferential edge (21).

2. A reusable runner for a cold chamber die casting machine according to claim 1, characterized in that The insert circumferential edge (21) is inwardly and downwardly inclined, and the inclination is 1-3 DEG.

3. A reusable runner for a cold chamber die casting machine according to claim 2, wherein The insert circumferential edge (21) is inwardly and downwardly inclined, and the inclination is 2 DEG.

4. A reusable runner for a cold-chamber die casting machine according to any one of claims 1 to 3, characterized in that, The material pipe (1) is provided with an insert mounting hole (12) for embedding the insert (2), and the insert (2) is detachably connected with the material pipe (1) through a screw (3).

5. A reusable runner for a cold chamber die casting machine according to claim 4, wherein The material pipe (1) is provided with a mounting through hole (13) for the screw (3) near one end close to the injection, and the front end surface of the insert (2) is provided with a screw hole (22) for locking the screw (3) at the position corresponding to the mounting through hole (13).

6. A reusable runner for a cold chamber die casting machine according to claim 5, wherein The mounting through hole (13) is provided with a stepped portion (131) for clamping a nut on one side close to the end surface.

7. A reusable shot sleeve for a cold-chamber die casting machine according to claim 1 or 2 or 3 or 5 or 6, characterized in that, The top of the insert (2) is an inner concave arc surface (23) with the same center and radius as the inner side surface of the material pipe (1).

8. A reusable runner for a cold chamber die casting machine according to claim 7, wherein The size of the inner concave arc surface (23) is adapted to the size of the lower opening of the inlet (11).

9. A reusable shot sleeve for a cold-chamber die casting machine according to claim 1 or 2 or 3 or 5 or 6 or 8, characterized in that, The bottom of the insert (2) is an outer concave arc surface (24) with the same center and radius as the outer side surface of the material pipe (1).

10. A reusable shot sleeve for a cold-chamber die casting machine according to claim 1 or 2 or 3 or 5 or 6 or 8, characterized in that, The two inner side surfaces corresponding to the axial direction of the inlet (11) are guide inclined surfaces (111) for conveniently collecting and flowing the liquid aluminum into the inner part of the material pipe (1), and the guide inclined surfaces (111) are inclined from top to bottom and from outside to inside.

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