Telescopic device for positioning die-casting insert oil pipe

Abstract

The utility model discloses a telescopic device for positioning an oil pipe of a die-casting insert, which comprises a die, an embedding groove for embedding the oil pipe is arranged in a cavity of the die, a plurality of positioning holes penetrating to the outer side of the die are arranged in the embedding groove, and an oil pipe positioning mechanism is arranged on the outer side of the die and below the positioning holes. The oil pipe positioning mechanism comprises a positioning needle and a driver, the positioning needle is movably arranged in the positioning hole, and one end of the positioning needle is connected with the driving end of the driver; when the oil pipe positioning mechanism is in a positioning state, one end, far away from the driver, of the positioning needle extends into the embedding groove to be in contact with the oil pipe; when the oil pipe positioning mechanism is in a non-positioning state, the end face of the end, away from the driver, of the positioning needle coincides with the outer side surface, located in the positioning hole, of the embedding groove. While the oil pipe is positioned, the oil pipe is prevented from being exposed, and the position of the product positioning pin is prevented from leaking.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting insert positioning, in particular to a telescopic device for positioning an oil pipe of a die-casting insert. Background Technique

[0002] At present, the oil circuits of engine gear chamber covers are divided into two types: one is to directly machine oil circuit holes, and the other is an oil pipe. The first type of machining oil circuit holes is only applicable to relatively short oil circuits and is easy to machine. In addition, machining the oil circuit will increase the machining time of machining processes, resulting in an increase in machining costs and a decrease in production efficiency. The second type of oil pipe is to directly install the oil pipe on the mold and then close the mold to fill and inject the product to form.

[0003] The oil pipe can be used on gear covers with complex oil circuits and many oil circuit bends. This kind of oil pipe will not increase much machining time, has low machining costs, high production efficiency, etc. However, the oil pipe also has deficiencies. The material of the insert oil pipe is steel, while the material of the gear chamber cover is aluminum alloy. During the die-casting forming process of the product, there will be a gap between the product and the insert oil pipe. If the oil pipe is exposed, it will cause leakage. Therefore, the insert oil pipe process must ensure that the oil pipe is completely wrapped by aluminum alloy and cannot be exposed.

[0004] For products with complex and long oil circuits and restricted by the product structure, when it is not possible to design many oil pipe positions, positioning pins need to be used to achieve oil pipe positioning. However, in the prior art, the positioning pins are of a fixed structure, and there will be a pin hole left at the position of the positioning pins after the product is formed by closing the mold, resulting in the exposure of the oil pipe, and the exposure of the oil pipe indicates that there is a risk of leakage in the product.

[0005] Therefore, in order to solve the above problems, it is necessary to develop a telescopic device for positioning an oil pipe of a die-casting insert to avoid the exposure of the oil pipe and the leakage at the position of the product positioning pins while positioning the oil pipe. Content of the Utility Model

[0006] In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

[0007] A telescopic device for positioning an oil pipe of a die-casting insert, including a mold, characterized in that an embedding groove for embedding the oil pipe is opened in the mold cavity, a plurality of positioning holes penetrating to the outside of the mold are opened in the embedding groove, an oil pipe positioning mechanism is arranged below the positioning holes on the outside of the mold, the oil pipe positioning mechanism includes a positioning pin and a driver, the positioning pin is movably arranged in the positioning hole, and one end of the positioning pin is connected to the driving end of the driver;

[0008] When the oil pipe positioning mechanism is in the positioning state, the end of the positioning pin away from the driver extends into the embedding groove to contact the oil pipe; when the oil pipe positioning mechanism is in the non-positioning state, the end face of the end of the positioning pin away from the driver coincides with the outer surface of the embedding groove located outside the positioning hole.

[0009] Preferably, a connecting plate is arranged between the driver and the positioning pin. One side of the connecting plate is connected to the driving end of the driver, and multiple positioning pins are arranged on the other side.

[0010] Preferably, a limiting part is arranged on the positioning pin, and the limiting part is used to ensure that the positioning pin extends into or withdraws accurately in place.

[0011] Preferably, the limiting part includes an upper limiting block and a lower limiting rod arranged at an angle to each other. The upper limiting block is arranged at one end of the positioning pin connected to the driver, the lower limiting rod is arranged parallel to the positioning pin, one end of the lower limiting rod is connected to the upper limiting block, and the other end is located above the driver.

[0012] Preferably, the driver is an oil cylinder or an electric cylinder.

[0013] Preferably, buffer pads are arranged on the surface of the upper limiting block close to the mold and the upper end face of the lower limiting rod close to the driver.

[0014] Preferably, an aluminum plug is arranged at the port of the oil pipe.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. The utility model realizes positioning the oil pipe while avoiding the exposure of the oil pipe and the leakage at the position of the product positioning pin.

[0017] 2. When the positioning pin is withdrawn, the end face of the positioning pin coincides with the outer surface of the embedding groove located outside the positioning hole, avoiding the exposure of the oil pipe at the positioning hole position while ensuring the flatness of the surface at the product positioning pin position and improving the product quality. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the oil pipe positioning before aluminum liquid filling in the present utility model;

[0019] Figure 2 It is a schematic structural diagram of the oil pipe positioning after aluminum liquid filling in the present utility model;

[0020] Figure 3 It is a schematic structural diagram of the oil pipe positioning before aluminum liquid filling in another embodiment of the present utility model;

[0021] Wherein: mold 1, tubing positioning mechanism 2, tubing 3, connecting plate 4, limiting portion 5, aluminum plug 6, embedding groove 11, positioning hole 12, positioning pin 21, driver 22, upper limit block 51, lower limit rod 52. Detailed implementation manners

[0022] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present utility model more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "front", "rear", "left", "right", "upper", "lower" and similar expressions used herein are only for the purpose of illustration.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] Next, in combination with the drawings and specific implementation manners, the present utility model will be further described:

[0026] As Figure 1 、 2 shown, a retractable device for die-casting inlay tubing positioning includes a mold 1. An embedding groove 11 for embedding the tubing 3 is provided in the cavity of the mold 1. A plurality of positioning holes 12 penetrating to the outside of the mold 1 are provided in the embedding groove 11. A tubing positioning mechanism 2 is provided below the positioning holes 12 on the outside of the mold 1. The tubing positioning mechanism 2 includes a positioning pin 21 and a driver 22. The positioning pin 21 is movably arranged in the positioning hole 12, and one end of the positioning pin 21 is connected to the driving end of the driver 22;

[0027] When the oil pipe positioning mechanism 2 is in the positioning state, the end of the positioning pin 21 away from the driver 22 extends into the embedding groove 11 to contact the oil pipe 3; when the oil pipe positioning mechanism 2 is in the non-positioning state, the end face of the end of the positioning pin 21 away from the driver 22 coincides with the outer surface of the embedding groove 11 located outside the positioning hole 12.

[0028] In this embodiment, for products with complex oil circuits and long oil circuits and restricted by the product structure, it is not possible to design many positions in the mold 1; when the mold 1 is not closed, the long oil pipe 3 is prone to displacement, so it is necessary to fix it through the positioning pin 21 before the mold 1 is completely closed. Since after closing the mold, a contour is formed between the mold 1 and the oil pipe 3 to limit and fix the oil pipe 3, at this time the positioning pin 21 can be withdrawn; thus, the positioning of the embedded oil pipe 3 is realized.

[0029] In addition, when the positioning pin 21 is withdrawn, the end face of the positioning pin 21 coincides with the outer surface of the embedding groove 11 located outside the positioning hole 12, thus effectively solving the problem of product leakage caused by the exposure of the oil pipe 3 at the position of the positioning hole 12.

[0030] Working principle:

[0031] Step 1 (putting the oil pipe 3 into the mold 1): The mold 1 is in the open state, and the oil pipe 3 is manually put into the embedding groove 11 of the cavity by a tool.

[0032] Step 2 (during the mold closing process, the positioning pin 21 fixes the oil pipe 3): During the mold closing process of the mold 1, at the same time, the oil pipe positioning mechanism 2 is started, and the driver 22 drives the positioning pin 21 to extend into the embedding groove 11 through the positioning hole 12 until it contacts the oil pipe 3; during this process, if the oil pipe 3 is not positioned by the positioning pin 21, the mold 1 may be damaged due to improper installation of the oil pipe 3 when the mold 1 is closed.

[0033] Step 3 (after the mold 1 is completely closed and before the molten aluminum fills the cavity, the positioning pin 21 is withdrawn): After the mold 1 is completely closed, a contour is formed between the mold 1 and the oil pipe 3 to limit and fix the oil pipe 3. At this time, the oil pipe positioning mechanism 2 changes from the positioning state to the non-positioning state, that is, the driver 22 drives the positioning pin 21 in the reverse direction to withdraw the positioning pin 21.

[0034] Step 4 (filling the cavity with molten aluminum): After the positioning pin 21 is reset (that is, the end face of the positioning pin 21 coincides with the outer surface of the embedding groove 11 located outside the positioning hole 12), the cavity is filled with molten aluminum, and the oil pipe 3 at the position of the positioning hole 12 of the formed product will not be exposed.

[0035] Further, as Figure 3As shown, in order to reduce the number of driver 22 settings, save costs, and achieve the effect of a single driver 22 synchronously driving multiple positioning pins 21; a connecting plate 4 is provided between the driver 22 and the positioning pins 21. One side of the connecting plate 4 is connected to the driving end of the driver 22, and the other side is provided with multiple positioning pins 21.

[0036] Further, as Figure 1 、 2 shown, a limiting portion 5 is provided on the positioning pin 21, and the limiting portion 5 is used to ensure that the positioning pin 21 extends into or withdraws accurately in place.

[0037] Further, as Figure 1 、 2 shown, in order to improve the positioning accuracy of the oil pipe 3 and ensure the flatness of the position of the product positioning hole 12; the limiting portion 5 includes an upper limiting block 51 and a lower limiting rod 52 arranged at an angle to each other. The upper limiting block 51 is provided at one end of the positioning pin 21 connected to the driver 22. The lower limiting rod 52 is arranged parallel to the positioning pin 21. One end of the lower limiting rod 52 is connected to the upper limiting block 51, and the other end is located above the driver 22.

[0038] Further, the driver 22 is an oil cylinder or an electric cylinder.

[0039] Further, in order to prevent the limiting portion 5 from hitting the mold 1 or the driver 22 and damaging the shape when the positioning pin 21 moves and improve the positioning accuracy; a buffer pad (not shown in the figure) is provided on the surface of the upper limiting block 51 close to the mold 1 and the upper end face of the lower limiting rod 52 close to the driver 22.

[0040] Further, as Figure 1 、 2 、3 shown, in order to prevent foreign objects from entering the oil pipe 3 and blocking it and ensure the cleanliness of the oil pipe 3; an aluminum plug 6 is provided at the port of the oil pipe 3.

[0041] For those skilled in the art, various corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all these changes and deformations should fall within the protection scope of the claims of the utility model patent.

Claims

1. A retractable device for positioning a die-cast insert oil pipe, comprising a mold, characterized in that: An embedding groove for embedding the oil pipe is provided in the mold cavity, a plurality of positioning holes penetrating to the outside of the mold are provided in the embedding groove, an oil pipe positioning mechanism is provided below the positioning holes on the outside of the mold, and the oil pipe positioning mechanism includes a positioning pin and a driver, the positioning pin is movably arranged in the positioning hole, and one end of the positioning pin is connected to the driving end of the driver; When the oil pipe positioning mechanism is in a positioning state, the end of the positioning pin away from the driver extends into the embedding groove and contacts the oil pipe; when the oil pipe positioning mechanism is in a non-positioning state, the end face of the positioning pin away from the driver coincides with the outer surface of the embedding groove located at the positioning hole.

2. A retractable device for positioning oil pipes of die-cast inserts according to claim 1, characterized in that: A connecting plate is arranged between the driver and the positioning needle, one side of the connecting plate is connected to the driving end of the driver, and the other side of the connecting plate is arranged with a plurality of positioning needles.

3. A retractable device for positioning oil pipes of die-cast inserts according to claim 1, characterized in that: A limiting portion is arranged on the positioning needle, and the limiting portion is used to ensure that the positioning needle is inserted into or withdrawn from the positioning needle accurately.

4. A retractable device for positioning oil pipes of die-cast inserts according to claim 3, characterized in that: The limiting part includes an upper limit block and a lower limit rod set at angles to each other, the upper limit block is set on one end of the positioning needle connected to the driver, the lower limit rod is set parallel to the positioning needle, one end of the lower limit rod is connected to the upper limit block, and the other end is located above the driver.

5. A retractable device for positioning oil pipes of die-cast inserts according to claim 1, 2 or 4, characterized in that: The driver is an oil cylinder or an electric cylinder.

6. A retractable device for positioning oil pipes of die-cast inserts according to claim 4, characterized in that: The surface of the upper limit block close to the mold and the upper end surface of the lower limit rod close to the driver are both provided with buffer pads.

7. A retractable device for positioning oil pipes of die-cast inserts according to claim 1, characterized in that: The port of the oil pipe is provided with an aluminum plug.

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