Integral material cylinder of die-casting die

Abstract

The utility model relates to an integral material cylinder of a die-casting mould, which comprises a material cylinder body, a first end of the material cylinder body is connected with a die-casting mould, a second end of the material cylinder body is used for injecting alloy liquid, and the integral material cylinder is characterized in that the first end of the material cylinder body is provided with a section of mounting part which is shrunk inwards in the radial direction, and the mounting part is sleeved with a first sleeve; the first sleeve is sleeved with a second sleeve, the first sleeve and / or the second sleeve are / is provided with a cooling channel used for guiding cooling liquid, and the first sleeve, the second sleeve and the cooling channel are arranged in a mutually attached mode. The first end of the material cylinder body is thinned and then sleeved with the first sleeve and the second sleeve, and cooling water is introduced, so that heat dissipated by the material cylinder body is taken away, and the service life of the material cylinder is prolonged; and the cooling water flows between the first sleeve and the second sleeve, so that the condition of water leakage caused by slotting of the material cylinder can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure casting, in particular to an integral material cylinder of a pressure casting mold. Background Art

[0002] Currently, there are two main types of die-casting mold cylinders. One type features a sprue sleeve built into the die, creating a space between the die-casting mold and the die-casting machine's cylinder to store liquid metal. While this type of cylinder offers excellent versatility, it can experience errors in coaxiality and dimensional accuracy between the die-casting mold's sprue sleeve and the die-casting machine's cylinder. This has led to the development of an integral cylinder that connects the die-casting mold and die-casting machine. During use, the integral cylinder near the parting surface is often subject to high temperatures, high pressures, and high metal flow rates, necessitating the introduction of coolant to maintain cooling and extend its service life.

[0003] For example, a Chinese utility model patent, "A Water-Cooled Integral Cylinder for Die-Casting Molds," with patent number ZL201420380626.5 (publication number CN204262317U), discloses a single-piece cylinder consisting of a cylinder, a water jacket at the gate end, a water jacket at the pouring port, and a water trough. The water trough is shaped like a bow, and water flows from the water inlet pipe at the parting surface into the cylinder, splitting into two semi-circular streams that converge at the top before flowing into the second ring and then down to the third ring. The fourth ring at the top flows down to the bottom before exiting. While the water trough solves the heat dissipation problem, it can easily crack after a period of use due to the high-temperature, high-pressure, and alternating hot and cold working environments of the cylinder itself. This necessitates replacement of the entire cylinder. However, the cylinder's manufacturing process is complex, increasing the die-casting cost of the product.

[0004] For this reason, it is necessary to further improve the internal structure of the overall material cylinder. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a die-casting mold integral cylinder which can avoid water leakage of the cylinder body in view of the above-mentioned existing technical status.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: the die-casting mold integral cylinder includes a cylinder body, the first end of the cylinder body is connected to the die-casting mold, and the second end of the cylinder body is for alloy liquid injection, and is characterized in that: the first end of the cylinder body is provided with a radially inwardly contracted mounting portion, the mounting portion is outer-circuited with a first sleeve, and a second sleeve is further sleeved outside the first sleeve, the first sleeve and / or the second sleeve are provided with a cooling channel for guiding the cooling liquid, and the first sleeve and the second sleeve and the cooling channel are arranged to fit each other.

[0007] In order to form a space for coolant circulation, the cooling channel is preferably provided on the first sleeve or the second sleeve, and at least two cooling channels are provided. A fitting portion is formed between adjacent cooling channels for fitting the first sleeve and the second sleeve together. The cooling channel can be an independently embedded channel provided on the first sleeve or the second sleeve, or a groove provided on the outer circumference of the first sleeve or the inner circumference of the second sleeve. When the cooling channel is a groove, the corresponding sleeves are fitted on the groove to form a cooling channel for coolant circulation, and the fitting portion also separates the cooling channels.

[0008] Furthermore, each of the cooling channels has at least one open end, and the cooling channels are connected through their respective open ends. Compared with independent cooling channels, the cooling channels connected through their respective open ends can better uniformly adjust the flow rate of the coolant or the cooling time.

[0009] To increase the speed of coolant transfer, the open end is preferably disposed on the fitting portion. This fitting portion serves two purposes: first, it allows the first sleeve and the second sleeve to fit more tightly together, preventing the gap from widening due to loose fit, which could lead to water leakage; and second, the fitting portion separates the cooling channels. Disposing the open end on the fitting portion allows the coolant to enter the next cooling channel via the shortest path, thereby accelerating the transfer of the coolant.

[0010] In order to provide each cooling channel with the ability to achieve maximum heat dissipation, one implementation method may be: each cooling channel is arranged parallel to each other along the axis B where the cylinder body is located.

[0011] There are two ways to implement this: each cooling channel is arranged around the axis B of the cylinder body. Of course, the cooling channel can also be designed in various forms, such as spiral, "W" shape, etc.

[0012] To facilitate processing, the cooling channel is preferably formed on a first sleeve, and the second sleeve is sleeved outside the first sleeve to form the cooling channel. A rotating tool is used to create an annular groove on the outer circumference of the first sleeve, and the second sleeve is sleeved outside the first sleeve, thereby sealing the open end of the annular groove and forming a closed cooling channel. Adjacent cooling channels are then connected through the open ends.

[0013] To facilitate the supply of coolant, the second sleeve preferably has an inlet for coolant to flow into the cooling channel and an outlet for coolant to flow out of the cooling channel. Coolant at a lower temperature flows into the cooling channel through the inlet, and adjacent cooling channels are connected through open ends. The coolant heats up after cooling the cylinder body and eventually flows out through the outlet. The inlet and outlet arrangements ensure a continuous supply of coolant at a low temperature, while also allowing for the timely discharge of heated coolant.

[0014] To facilitate the circulation of the coolant, the inlet is preferably connected to the frontmost cooling channel, and the outlet is connected to the rearmost cooling channel. The coolant enters the frontmost cooling channel from the inlet, then enters the adjacent cooling channels through the open end. After passing through each cooling channel, the coolant finally flows out of the outlet of the rearmost cooling channel.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] 1. The first end of the cylinder body is thinned and then sleeved with a first sleeve and a second sleeve. The coolant enters the space between the first sleeve and the second sleeve, flows along the cooling channel, and then flows out. During the flow, the coolant takes away the heat emitted by the cylinder body, thereby increasing the service life of the cylinder.

[0017] 2. By arranging the cooling channel between the first sleeve and the second sleeve or arranging it separately on the first sleeve or the second sleeve, the situation in which a water tank is opened on the cylinder body and thus causes water leakage is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure in another direction;

[0020] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the present utility model;

[0021] Figure 4 It is a cross-sectional schematic diagram of an embodiment of the present utility model (the first sleeve and the second sleeve are omitted);

[0022] Figure 5 This is an exploded schematic diagram of an embodiment of the present utility model;

[0023] Figure 6 for Figure 5 Schematic diagram of the other direction.

[0024] In the figure: 1. Cylinder body; 11. First end; 12. Second end; 2. Mounting portion; 3. First sleeve; 4. Second sleeve; 41. Inlet; 42. Outlet; 5. Cooling channel; 6. Fitting portion; 61. Open end. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0026] Example 1

[0027] like Figures 1 to 6 The figure shows a preferred embodiment of the present invention. The die-casting mold integral cylinder comprises a cylinder body 1, a first end 11 of which is connected to the die-casting mold, and a second end 12 of which is used for injection of alloy liquid. The first end 11 of the cylinder body 1 is provided with a radially inwardly contracted mounting portion 2, the mounting portion 2 being provided with a first sleeve 3, which is further provided with a second sleeve 4. The first sleeve 3 is provided with a cooling channel 5 for guiding the coolant, and the first sleeve 3, the second sleeve 4, and the cooling channel 5 are arranged to fit together.

[0028] refer to Figure 3 and Figure 5 In this embodiment, considering the convenience of processing, the groove portion of the cooling channel 5 is preferably disposed on the outer circumference of the first sleeve 3, and the second sleeve 4 is sleeved outside the first sleeve 3 to form the cooling channel 5. In this embodiment, six cooling channels 5 are disposed on the first sleeve 3 based on the space in the mounting portion 2. A fitting portion 6 is formed between adjacent cooling channels 5 for affixing the first sleeve 3 and the second sleeve 4 together. The first sleeve 3 has a groove, and the second sleeve 4, which is sleeved outside the first sleeve 3, fits into the groove, thereby forming a cooling channel 5 for coolant circulation. The cooling channel 5 has an open end 61, and each cooling channel 5 is connected by its own open end 61, which is disposed on the fitting portion 6. The coolant flows within a cooling channel 5 and enters the next adjacent cooling channel 5 through the open end 61 to continue flowing. Compared with independent cooling channels 5, this type of cooling channel 5 can better uniformly adjust the coolant flow rate or cooling time. In addition, the fitting portion 6 has two functions: first, the fitting portion 6 can better make the fit between the first sleeve 3 and the second sleeve 4 tighter, and can avoid the gap between the two becoming larger due to loose fit, thereby preventing water leakage; second, the fitting portion 6 separates the cooling channels 5, and arranging the open end 61 on the fitting portion 6 can allow the coolant to enter the next cooling channel 5 through the shortest path, thereby accelerating the transfer of the coolant.

[0029] refer to Figure 5 and Figure 6The cooling channels 5 are opened in the first sleeve 3, and each cooling channel 5 is arranged parallel to each other along the axis B where the cylinder body 1 is located. The coolant is transferred one by one in the cooling channels 6, so as to maximize the removal of heat emitted by the cylinder body 1.

[0030] refer to Figure 5 and Figure 6 The second sleeve 4 is provided with an inlet 41 for coolant to flow into the cooling channels 5 and an outlet 42 for coolant to flow out of the cooling channels 5. The inlet 41 is connected to the frontmost cooling channel 5, and the outlet 42 is connected to the rearmost cooling channel 5. The coolant flows in the following direction: the coolant at a lower temperature enters the frontmost cooling channel 5 through the inlet 41, then enters the adjacent cooling channels 5 through the open end 61. After passing through each cooling channel 5, the coolant heats up and flows out of the outlet 42 of the rearmost cooling channel 5.

[0031] Example 2

[0032] The structure is basically the same as that of embodiment 1, with the only difference being that the cooling channel 5 is arranged differently. The cooling channel 5 in this embodiment is embedded in the first sleeve 3 .

[0033] Example 3

[0034] The structure is basically the same as that of embodiment 1, with the only difference being that the cooling channel 5 is arranged differently. The cooling channel 5 in this embodiment is embedded in the second sleeve 4 .

[0035] Example 4

[0036] The structure is basically the same as that of Example 1, with the only difference being that the cooling channel 5 is arranged differently. The groove portion of the cooling channel 5 in this embodiment is arranged on the inner circumferential surface of the second sleeve 4, and the first sleeve 3 and the second sleeve 4 are fitted together to form a cooling channel 5 for the circulation of coolant.

[0037] Example 5

[0038] The structure is basically the same as that of Example 1, with the only difference being that the cooling channel 5 is arranged differently and is confined in an independent cooling tube body. Each cooling tube body has an inlet 41 and an outlet 42 for guiding the coolant, so that the coolant is directly confined in the cooling tube body, so that the coolant circulates directly in the cooling tube body without leakage. As an independent cooling tube body, it can be wound around the first sleeve 3 and the second sleeve 4 is used to tightly fit the two.

Claims

1. A die-casting mold integral cylinder, comprising a cylinder body (1), wherein a first end (11) of the cylinder body (1) is connected to the die-casting mold, and a second end (12) of the cylinder body (1) is for injecting alloy liquid, characterized in that: The first end (11) of the cylinder body (1) is provided with a mounting portion (2) that contracts radially inwards, the mounting portion (2) is provided with a first sleeve (3) on the outer sleeve, and a second sleeve (4) is further provided on the outer sleeve of the first sleeve (3), and a cooling channel (5) for guiding a coolant is provided on the first sleeve (3) and / or the second sleeve (4), and the first sleeve (3), the second sleeve (4) and the cooling channel (5) are arranged to fit each other.

2. The die-casting mold integral cylinder according to claim 1, characterized in that: The cooling channel (5) is provided on the first sleeve (3) or the second sleeve (4), and at least two cooling channels (5) are provided. A fitting portion (6) for fitting the first sleeve (3) and the second sleeve (4) together is formed between adjacent cooling channels (5).

3. The die-casting mold integral cylinder according to claim 2, characterized in that: Each of the cooling channels (5) has at least one open end (61), and each of the cooling channels (5) is connected via the respective open end (61).

4. The die-casting mold integral cylinder according to claim 3, characterized in that: The open end portion (61) is provided on the fitting portion (6).

5. The die-casting mold integral cylinder according to claim 4, characterized in that: The cooling channels (5) are arranged parallel to each other along the axis B of the cylinder body (1).

6. The die-casting mold integral cylinder according to claim 4, characterized in that: Each of the cooling channels (5) is arranged around the axis B of the cylinder body (1).

7. The die-casting mold integral cylinder according to any one of claims 1 to 5, characterized in that: The cooling channel (5) is opened on the first sleeve (3), and the second sleeve (4) is sleeved outside the first sleeve (3) to form the cooling channel (5) together.

8. The die-casting mold integral cylinder according to claim 7, characterized in that: The second sleeve (4) is provided with an inlet (41) for the coolant to flow into the cooling channel (5) and an outlet (42) for the coolant to flow out of the cooling channel (5).

9. The die-casting mold integral cylinder according to claim 8, characterized in that: The inlet (41) is connected to the cooling channel (5) located at the front, and the outlet (42) is connected to the cooling channel (5) located at the rear.

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