Water passing structure of a runner insert in a cylinder block die-casting mold

Abstract

The present invention relates to a water passing structure of a runner insert in a cylinder block die-casting mold. An internal water passage is provided in the runner insert. The runner insert is installed on the bottom surface of the cylinder block lower slide block mold insert, and the surface facing the cylinder block lower slide block mold insert is its bottom surface. The water passing structure is characterized in that: the water passing structure includes a water pipe passage hole opened on the bottom surface of the cylinder block lower slide block mold insert, two threaded connection holes opened on the bottom surface of the runner insert, two pipe connectors, and two water pipes. The water pipe passage hole is an "8"-shaped hole formed by butt-jointing two symmetric major arc bow-shaped holes. The two pipe connectors are respectively screwed into the two threaded connection holes and are respectively located in the two major arc bow-shaped holes of the water pipe passage hole. The two water pipes are respectively connected to the pipe connectors and respectively extend along the two major arc bow-shaped holes of the water pipe passage hole. The water passing structure of the present invention has a simple structure, is easy to process and manufacture, is convenient for disassembly and assembly, and has a low production cost.

Description

Technical Field

[0001] The present invention relates to the field of cylinder block die-casting molds, and particularly to a water passing structure of a runner insert in a cylinder block die-casting mold. Background Art

[0002] In a cylinder block die-casting mold, the runner insert is installed on the bottom surface of the cylinder block lower slide block mold insert. There is a water passage in the runner insert. Due to design and installation reasons, a connecting water passage needs to be provided on the bottom surface of the runner insert in contact with the cylinder block lower slide block mold insert for circulation. In the existing cylinder block die-casting molds, a rectangular hole is opened on the bottom surface of the cylinder block lower slide block mold insert, and a water passing member is installed in the rectangular hole. The internal hole in the water passing member is used to communicate with the water passage in the runner insert to achieve the water connection of the runner insert. With this design method, on the one hand, since the rectangular through hole on the bottom surface of the cylinder block lower slide block mold insert usually has a projected area of about 150mm * 100mm and a depth of more than 270mm, electrical discharge machining is often used, and the processing time is about 200 man-hours, which is time-consuming and costly. For the production of the cylinder block mold insert, it not only increases the processing time, resulting in an extended construction period, but also keeps the processing cost high. On the other hand, the water passing member also needs to be made according to this rectangular shape, with high manufacturing costs, and due to the mating relationship between the water passing member and the runner insert, it is also inconvenient to disassemble and assemble during mold maintenance. Summary of the Invention

[0003] In view of the above-mentioned disadvantages of the prior art, the technical problem to be solved by the present invention is to provide a water passing structure of a runner insert in a cylinder block die-casting mold, which has a simple structure, is easy to process and manufacture, is convenient for disassembly, maintenance and has low cost.

[0004] To achieve the above object, the present invention provides a water passing structure of a runner insert in a cylinder block die-casting mold. The runner insert has an internal water passage. The runner insert is installed on the bottom surface of the cylinder block lower slide block mold insert, and the surface facing the cylinder block lower slide block mold insert is its bottom surface. The water passing structure includes a water pipe channel hole opened on the bottom surface of the cylinder block lower slide block mold insert, two threaded connection holes opened on the bottom surface of the runner insert, two pipe joints, and two water pipes. The water pipe channel hole is an "8"-shaped hole formed by butt-jointing two symmetric major arc bow-shaped holes. The two pipe joints are respectively screwed into the two threaded connection holes and are respectively located in the two major arc bow-shaped holes of the water pipe channel hole. The two water pipes are respectively connected to the pipe joints and respectively extend along the two major arc bow-shaped holes of the water pipe channel hole.

[0005] Further, the diameter of the water pipe is 12mm, and the diameter of the major arc bow-shaped hole in the water pipe channel hole is 60mm.

[0006] Further, an installation groove adapted to the runner insert is provided on the bottom surface of the die insert of the lower slider of the cylinder block. The water pipe channel hole is opened in the installation groove, and the runner insert is installed in the installation groove.

[0007] Further, the pipe joint is a heavy-duty hydraulic joint, and the water pipe is connected to the heavy-duty hydraulic joint through a ferrule and a ferrule bolt.

[0008] Further, a sealing ring is provided between the pipe joint and the water pipe.

[0009] Further, the water pipe is a stainless steel pipe.

[0010] Further, both the water pipe and the pipe joint are standard parts.

[0011] Further, an elbow joint is connected to the lower end of the pipe joint.

[0012] Further, the processing method of the water pipe channel hole on the bottom surface of the die insert of the lower slider of the cylinder block is as follows: The radius of the superior arc bow-shaped hole of the water pipe channel hole is φ. Using an ordinary white steel drill bit, on the bottom surface of the die insert of the lower slider of the cylinder block, a round hole with a diameter of φ is first processed at the center of one of the superior arc bow-shaped holes, and then a mandrel is inserted into the round hole. Then, a round hole with a diameter of φ is processed at the center of the other superior arc bow-shaped hole using an ordinary white steel drill bit; then the mandrel is pulled out to obtain an "8"-shaped water pipe channel hole.

[0013] As described above, the water passing structure involved in the present invention has the following beneficial effects:

[0014] By providing a water pipe channel hole, a threaded connection hole, a pipe joint, and a water pipe, one of the two water pipes is used as the water inlet pipe and the other as the water outlet pipe. From the bottom surface of the runner insert, through the pipe joint and the threaded connection hole, it is connected to the internal water circuit of the runner insert. The other ends of the two water pipes extend straight or bent to the specified position through the die insert of the lower slider of the cylinder block according to actual needs, so as to realize the water circulation work of the runner insert. For the water passing structure of the present invention, on the one hand, the water pipe and the pipe joint are connected to the runner insert in a simple structure, which is convenient for installation and maintenance. Both the water pipe and the pipe joint can use standard parts, reducing the installation difficulty and production cost; on the other hand, an "8"-shaped water pipe channel hole is opened on the bottom surface of the die insert of the lower slider of the cylinder block, which is simple and convenient to process, greatly reducing the hole processing time and difficulty, thereby reducing the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an assembly schematic diagram of the water passing structure in the present invention, and the runner insert is omitted in this figure.

[0016] Figure 2 is a schematic diagram of the structure of the water pipe channel hole in the present invention.

[0017] Figure 3 This is a schematic diagram of the assembly of the pipe joint and the water pipe in the sprue insert in the present invention.

[0018] Figure 4 It is Figure 3 the right view of

[0019] Figure 5 It is Figure 4 the sectional view taken along the E-E direction of

[0020] Figure 6 This is a schematic diagram of the structure of the threaded connection hole on the bottom surface of the sprue insert in the present invention.

[0021] Figure 7 It is Figure 6 the top view of

[0022] Figure 8 It is Figure 7 the sectional view taken along the C-C direction of

[0023] Description of component numbers

[0024] 1 Die insert of the sliding block of the cylinder block

[0025] 11 Installation groove

[0026] 2 Sprue insert

[0027] 21 Internal waterway

[0028] 3 Water pipe channel hole

[0029] 31 Superior arc bow-shaped hole

[0030] 4 Threaded connection hole

[0031] 5 Pipe joint

[0032] 6 Water pipe

[0033] 7 Sealing ring

[0034] 8 Ferrule

[0035] 9 Ferrule bolt Detailed implementation manners

[0036] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification.

[0037] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0038] See also Figures 1 to 8 The present invention provides a water-passing structure of a runner insert in a cylinder die-casting mold, wherein the runner insert 2 There is an internal waterway 21, the runner insert 2 is installed on the bottom surface of the cylinder block mold insert 1, and the surface facing the cylinder block mold insert 1 is its bottom surface. The water-passing structure of the present invention includes a water pipe channel hole 3 opened on the bottom surface of the cylinder block mold insert 1, two threaded connection holes 4 opened on the bottom surface of the runner insert 2, two pipe joints 5, and two water pipes 6. The water pipe channel hole 3 is an "8"-shaped hole formed by two symmetrical major arc arch holes 31 connected together (that is, two circular holes partially cross and overlap to form an "8" shape), the two pipe joints 5 are respectively screwed into the two threaded connection holes 4, and are respectively located in the two major arc arch holes 31 of the water pipe channel hole 3, and the two water pipes 6 are respectively connected to the pipe joints 5, and are respectively extended and arranged along the two major arc arch holes 31 of the water pipe channel hole 3. Among them, the center distance between the two major arc arch holes 31 in the water pipe channel hole 3 is determined according to actual conditions.

[0039] The water-passing structure of the present invention is arranged at a suitable position of the runner insert 2 according to actual needs. One of the two water pipes 6 is used as a water inlet pipe 6 and the other is used as a water outlet pipe 6. From the bottom surface of the runner insert 2, through the pipe joint 5 and the threaded connection hole 4, it is connected with the internal water channel 21 of the runner insert 2. The other ends of the two water pipes 6 are directly or connected to other pipes through the cylinder lower slider mold insert 1 to a specified position according to actual needs, so as to realize the water circulation work of the runner insert 2. Specifically, in this embodiment, see Figure 1 The lower end of the pipe joint 5 is connected with a bent pipe joint for connecting other pipes to pass through the cylinder lower slider mold insert 1 and extend to a specified position.

[0040] The water passing structure of the present invention, on the one hand, is connected to the runner insert 2 in the way of a water pipe 6 and a pipe joint 5. The structure is simple, and the installation and maintenance are convenient. Preferably, both the water pipe 6 and the pipe joint 5 can be standard parts, which can be flexibly purchased in the market without the need for self-customization, and are convenient to replace without fitting problems. Compared with the existing design, the rectangular water passing member and the welding square hole for installing the rectangular water passing member are cancelled, reducing the installation difficulty and the production cost; on the other hand, an "8"-shaped water pipe channel hole 3 is opened on the bottom surface of the cylinder block lower slide die insert 1 as the space for arranging the water pipe 6 and the pipe joint 5. The water pipe channel hole 3 is simple and convenient to process. An ordinary white steel drill bit can be used to process two overlapping circular holes, which greatly reduces the hole processing time and difficulty compared with the existing rectangular hole, thereby reducing the processing cost. And by using the "8"-shaped water pipe channel hole 3, when the sizes of the pipe joint 5 and the water pipe 6 are certain, the distance between the two pipe joints 5 can be closer, and the structure is more compact.

[0041] In the water passing structure of the present invention, the two threaded connection holes 4 should be opposite to the two major arc bow-shaped holes 31 of the water pipe channel hole 3 respectively. The diameter of the major arc bow-shaped hole 31 is appropriately larger than the radius of the pipe joint 5 and the radius of the water pipe 6 to ensure smooth assembly. In the actual production process of the cylinder block die-casting mold, the diameter of the water pipe 6 can be selected as 12 mm, and the diameter φ of the major arc bow-shaped hole 31 in the water pipe channel hole 3 can be 60 mm, which can ensure the water circulation work of the runner insert 2 while having little impact on other structures of the cylinder block die-casting mold.

[0042] In this embodiment, referring to Figure 1 and Figure 2 , an installation groove 11 adapted to the runner insert 2 is opened on the bottom surface of the cylinder block lower slide die insert 1. The water pipe channel hole 3 is opened in the installation groove 11. The runner insert 2 is installed in the installation groove 11. Through the installation groove 11, the installation of the runner insert 2 can be more stable and accurately positioned, thus facilitating the assembly and positioning of the water passing structure.

[0043] As a preferred design, in this embodiment, referring to Figures 3 to 5 shown, the pipe joint 5 is a heavy-duty hydraulic joint. The water pipe 6 is connected to the heavy-duty hydraulic joint through a ferrule 8 and a ferrule bolt 9. The water pipe 6 is preferably a stainless steel pipe to ensure the stable connection between the water pipe 6 and the pipe joint 5. Further, a sealing ring 7 is provided between the pipe joint 5 and the water pipe 6 to ensure good sealing between the pipe joint 5 and the water pipe 6.

[0044] Preferably, in the present invention, the processing method of the water pipe channel hole 3 on the bottom surface of the cylinder block lower slider die insert 1 is as follows: the radius of the superior arc bow-shaped hole 31 of the water pipe channel hole 3 is φ. Using an ordinary white steel drill bit, on the bottom surface of the cylinder block lower slider die insert 1, a circular hole with a diameter of φ is first processed at the center of one of the superior arc bow-shaped holes 31. Then, a mandrel is inserted into this circular hole, and an ordinary white steel drill bit is used to process a circular hole with a diameter of φ at the center of the other superior arc bow-shaped hole 31. Then, the mandrel is pulled out to obtain the "8"-shaped water pipe channel hole 3. See Figure 2 .

[0045] Among them, in the traditional "8"-shaped hole processing methods, generally there are mainly the following two methods: A. According to the "8" shape, using a CNC machining center, with a lengthened tool handle (the tool handle needs to be lengthened when the depth of the "8"-shaped hole is relatively deep), and adopting a milling machining method, layer by layer downward processing to process the depth and shape in place. According to the hardness of the material itself after heat treatment (after a piece of material is heat treated, the hardness of each part will be different. If the hardness of the processed part is relatively high, it will be more difficult to process), additional electrical discharge machining may be required to completely process in place. Using this processing method, the milling machining time is long, the processing is complex, and the cost is high; B. Using a special U-shaped drill, on the CNC machining center, directly drill the two hole positions of the "8"-shaped hole to the processing position. Using this processing method, the cost of the U-shaped drill is relatively high, there are certain requirements for the cooling water pressure of the equipment, a CNC machining center is required, and there is a possibility of drill bit deflection and breakage during processing, and there are relatively high requirements for the skill level of the operator. In the processing method of the water pipe channel hole 3 in the present invention, compared with the existing processing methods, only ordinary drill bits and ordinary machine tools with lower costs are needed, the process operation is relatively simple, the processing risk is low, the processing time is short, the drill bit loss is small, and the production cost is reduced.

[0046] As can be seen from the above, the water passing structure involved in the present invention has a simple structure, is easy to process and manufacture, is convenient for disassembly and assembly, is convenient for the maintenance of the cylinder block die-casting mold, has a low production cost, and can reliably realize the water circulation work of the runner insert 2 at a temperature.

[0047] In summary, the invention effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0048] The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A water passage structure of a runner insert in a cylinder block die-casting mold. An internal water passage (21) is provided in the runner insert (2). The runner insert (2) is installed on the bottom surface of the cylinder block lower slide mold insert (1), and the surface of the runner insert (2) facing the cylinder block lower slide mold insert (1) is the bottom surface of the runner insert (2). It is characterized in that: The water passing structure includes a water pipe channel hole (3) opened on the bottom surface of the lower slider die insert (1) of the cylinder block, two threaded connection holes (4) opened on the bottom surface of the runner insert (2), two pipe connectors (5), and two water pipes (6). The water pipe channel hole (3) is an "8”-shaped hole formed by butt-jointing two symmetric major arc bow-shaped holes (31). The two pipe connectors (5) are respectively screwed into the two threaded connection holes (4) and are respectively located in the two major arc bow-shaped holes (31) of the water pipe channel hole (3). The two water pipes (6) are respectively connected to the pipe connectors (5) and respectively extend along the two major arc bow-shaped holes (31) of the water pipe channel hole (3). One of the two water pipes (6) is used as the water inlet pipe and the other is used as the water outlet pipe. Both are communicated with the internal water channel (21) of the runner insert (2) through the pipe connectors (5) and the threaded connection holes (4). The other ends of the two water pipes (6) pass through the lower slider die insert (1) of the cylinder block to realize the water circulation of the runner insert (2).

2. The water passage structure according to claim 1, wherein: The diameter of the water pipe (6) is 12 mm, and the diameter of the major arc bow-shaped hole (31) in the water pipe channel hole (3) is 60 mm.

3. The water passing structure according to claim 1, wherein: An installation groove (11) adapted to the runner insert (2) is opened on the bottom surface of the lower slider die insert (1) of the cylinder block. The water pipe channel hole (3) is opened in the installation groove (11), and the runner insert (2) is installed in the installation groove (11).

4. The water passing structure according to claim 1, characterized in that: The pipe connector (5) is a heavy-duty hydraulic connector, and the water pipe (6) is connected to the heavy-duty hydraulic connector through a ferrule (8) and a ferrule bolt (9).

5. The water-passing structure according to claim 1, wherein: A sealing ring (7) is provided between the pipe connector (5) and the water pipe (6).

6. The water passage structure according to claim 1, wherein: The water pipe (6) is a stainless steel pipe.

7. The water passing structure according to claim 1, characterized in that: Both the water pipe (6) and the pipe connector (5) are standard parts.

8. The water passage structure according to claim 1, wherein: A bent pipe connector is connected to the lower end of the pipe connector (5).

9. The water passing structure according to claim 1, wherein: The processing method of the water pipe channel hole (3) on the bottom surface of the lower slider die insert (1) of the cylinder block is as follows: The radius of the major arc bow-shaped hole (31) of the water pipe channel hole (3) is φ. Using an ordinary white steel drill bit, on the bottom surface of the lower slider die insert (1) of the cylinder block, a circular hole with a diameter of φ is first processed at the center of one of the major arc bow-shaped holes (31). Then, a mandrel is inserted into the circular hole in a matching manner. Then, a circular hole with a diameter of φ is processed at the center of the other major arc bow-shaped hole (31) using an ordinary white steel drill bit. Then, the mandrel is pulled out to obtain the "8”-shaped water pipe channel hole (3).

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