Cylinder sleeve positioning and heating device of multifunctional 3d printing sand mold cylinder body

Abstract

The utility model discloses a cylinder sleeve positioning and heating device of a multifunctional 3d printing sand mold cylinder body. The cylinder sleeve positioning and heating device comprises a first 3d printing sand mold, a group of second 3d printing sand molds and six cylinder sleeve positioning and heating assemblies, the second 3d printing sand molds are arranged on the two sides of the first 3d printing sand mold; and the cylinder sleeve positioning and heating assembly penetrates through the second 3d printing sand mold. According to the cylinder sleeve positioning and heating device of the multifunctional 3d printing sand mold cylinder body, by designing the cylinder sleeve positioning and heating assembly, the problem that the cylinder sleeve is inaccurate in positioning is solved, the problem that the cylinder sleeve binding rate is poor due to the temperature of the cylinder sleeve is solved, and the cylinder sleeve binding rate is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of 3D printing sand mold cylinders, and in particular relates to a cylinder sleeve positioning and heating device for a multifunctional 3D printing sand mold cylinder. Background Art

[0002] At present, there are errors in 3D printing sand mold printing equipment, and its tolerance is plus or minus 0.4mm, which has a larger deviation than mass-produced metal molds and its accuracy is greatly reduced. Among them, the cylinder body products require pre-cast cylinder liners. The sand mold has large errors, and the cylinder liners will have deviations, which greatly affects the movement of the cylinder liner and piston, and is very likely to cause damage to the cylinder liner and piston, affecting the life of the engine cylinder body.

[0003] At the same time, the sand mold cannot be too high like the mass-produced metal mold. The principle of the sand mold is that the resin curing agent and sand are bonded together. If the temperature is overheated, it will collapse, which directly affects the casting success rate. Therefore, the mold problem and the cylinder liner temperature problem cannot be controlled. This has a very large impact on the bonding rate of the cylinder liner. If the bonding rate is not good, the cylinder liner is a defective product, and the bonding rate of the cylinder liner is very difficult to guarantee.

[0004] Therefore, it is urgent to design a device to solve the above problems. Utility Model Content

[0005] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a multifunctional 3D printing sand mold cylinder liner positioning and heating device. By designing a cylinder liner positioning and heating component, it not only solves the problem of inaccurate cylinder liner positioning, but also solves the problem of poor cylinder liner bonding rate due to temperature reasons, thereby ensuring the bonding rate of the cylinder liner.

[0006] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides a cylinder liner positioning and heating device for a multifunctional 3D printed sand mold cylinder body, comprising a first 3D printed sand mold, a group of second 3D printed sand molds and six cylinder liner positioning and heating components; the second 3D printed sand mold is arranged on both sides of the first 3D printed sand mold; the cylinder liner positioning and heating component is arranged through the second 3D printed sand mold; the cylinder liner positioning and heating component includes a cylinder liner positioning piece, a cylinder liner placement ring, a screw, a heating tube, a temperature measuring tube and a connecting nut; the cylinder liner positioning piece is arranged below the second 3D printed sand mold; the cylinder liner placement ring is arranged on the outer peripheral surface of the cylinder liner positioning piece; the screw is arranged in the middle through-hole of the cylinder liner positioning piece; the heating tube is arranged in the middle through-hole of the screw; the temperature measuring tube is arranged through the end face of the cylinder liner positioning piece and is parallel to the heating tube; the screw is connected to the second 3D printed sand mold through a connecting nut.

[0007] Furthermore, the liner positioning member is equipped with a sand mold positioning cone and a cylinder liner positioning cone at its upper and lower ends, respectively. Six positioning slots are located at the lower portion of the second 3D-printed sand mold. The sand mold positioning cone cooperates with the positioning slots to achieve positioning. The cylinder liner positioning cone ensures accurate positioning of the cylinder liner positioning and heating assembly with the cylinder liner. The sand mold positioning cone and the cylinder liner positioning cone improve the positioning accuracy of the positioning and heating assembly, the second 3D-printed sand mold, and the cylinder liner.

[0008] Furthermore, the sand mold positioning cone and the cylinder liner positioning member are combined to form a temperature measuring tube mounting surface on the end surface of the cylinder liner positioning member; the temperature measuring tube is installed through the temperature measuring tube mounting surface. The temperature measuring tube is installed on the temperature measuring tube mounting surface, which fully utilizes the space and can monitor the heating status of the cylinder liner.

[0009] Furthermore, the second 3D-printed sand mold is provided with three groups of mounting holes, including heating tube mounting holes and temperature measuring tube mounting holes. These heating tube mounting holes and temperature measuring tube mounting holes are sequentially arranged on the second 3D-printed sand mold, increasingly closer to the first 3D-printed sand mold. Placing the heating tube mounting holes closer to the first 3D-printed sand mold allows for more accurate temperature monitoring of the cylinder liner, ensuring its bonding efficiency.

[0010] Furthermore, the upper portion of the screw is arranged in the heating tube mounting hole, and the upper portion of the temperature measuring tube is arranged in the temperature measuring tube mounting hole. The heating tube mounting hole and the temperature measuring tube mounting hole ensure the accurate assembly of the screw and the temperature measuring tube.

[0011] Furthermore, the mounting hole groups on the second 3D printing sand mold are staggered with each other. The staggered arrangement of the mounting hole groups ensures that the positioning of the heating components of each cylinder liner does not affect each other, thereby ensuring accurate temperature monitoring.

[0012] Furthermore, six cylinder liner placement ring limiters are provided at the lower portion of the second 3D printing sand mold, which ensure that the cylinder liner positioning and heating assembly can be accurately placed.

[0013] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0014] 1. This utility model is a multifunctional 3D printing sand mold cylinder liner positioning and heating device. The sand mold positioning round table and the cylinder liner positioning round table improve the positioning accuracy of the positioning heating component and the second 3D printing sand mold and cylinder liner, solving the problem of inaccurate cylinder liner positioning.

[0015] 2. The utility model is a multifunctional 3D printing sand mold cylinder liner positioning and heating device. By installing a temperature measuring tube on the cylinder liner positioning and heating component to monitor the cylinder liner heating, the problem of poor cylinder liner bonding rate due to temperature reasons is solved, and the cylinder liner bonding rate is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a cylinder liner positioning and heating device for a multifunctional 3D printing sand mold cylinder body described in the utility model;

[0017] Figure 2 This is a structural schematic diagram of the cylinder liner positioning and heating assembly in the cylinder liner positioning and heating device for a multifunctional 3D printing sand mold cylinder body described in the present invention;

[0018] Figure 3 This is a schematic diagram of the cooperation between the cylinder liner positioning and heating component and the second 3D printing sand mold in the cylinder liner positioning and heating device of the multifunctional 3D printing sand mold cylinder body described in the present invention;

[0019] Figure 4 This is a schematic diagram of the bottom of a cylinder liner positioning and heating device for a multifunctional 3D printing sand mold cylinder body described in the utility model;

[0020] Figure 5 This is a top view of a cylinder liner positioning and heating device for a multifunctional 3D printing sand mold cylinder body described in the utility model;

[0021] Figure 6 This is a schematic diagram of the cylinder liner finished product produced by the cylinder liner positioning and heating device for a multifunctional 3D-printed sand mold cylinder body described in the present invention, 60 mm below the top;

[0022] Figure 7 This is a schematic diagram of the cylinder liner finished product produced by the cylinder liner positioning and heating device for a multifunctional 3D-printed sand mold cylinder body described in the present invention, 72 mm below the top;

[0023] Figure 8 This is a schematic diagram of the cylinder liner finished product produced by the cylinder liner positioning and heating device for a multifunctional 3D-printed sand mold cylinder body described in the present invention, 84 mm below the top;

[0024] In the picture:

[0025] 1-First 3D printed sand mold;

[0026] 2-second 3D printing sand mold; 21-mounting hole group; 22-positioning groove; 23-cylinder liner placement ring limiter;

[0027] 211-heating tube installation hole; 212-temperature measuring tube installation hole;

[0028] 3-cylinder liner positioning heating assembly; 31-cylinder liner positioning piece; 32-cylinder liner placement ring; 33-screw; 34-heating tube; 35-temperature measuring tube; 36-connecting nut;

[0029] 311-Sand mold positioning round table; 312-Cylinder liner positioning round table; 313-Temperature measuring tube installation surface. DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] Example 1

[0032] In this embodiment, Figure 1 、 Figure 2 and Figure 3 The utility model discloses a cylinder liner positioning and heating device for a multifunctional 3D printing sand mold cylinder body, comprising a first 3D printing sand mold 1, a group of second 3D printing sand molds 2 and six cylinder liner positioning and heating components 3; the second 3D printing sand mold 2 is arranged on both sides of the first 3D printing sand mold 1; the cylinder liner positioning and heating components 3 are arranged through the second 3D printing sand mold 2; the cylinder liner positioning and heating components 3 include a cylinder liner positioning piece 31, a cylinder liner placing ring 32, a screw 33, a heating tube 34, a temperature measuring tube 35 and a connecting nut 36; the cylinder liner positioning piece 31 is arranged below the second 3D printing sand mold 2; the cylinder liner placing ring 32 is arranged on the outer peripheral surface of the cylinder liner positioning piece 31; the screw 33 is arranged in the middle through-hole of the cylinder liner positioning piece 31; the heating tube 34 is arranged in the middle through-hole of the screw 33; the temperature measuring tube 35 is arranged through the end surface of the cylinder liner positioning piece 31 and is parallel to the heating tube 34; the screw 33 is connected to the second 3D printing sand mold 2 through the connecting nut 36.

[0033] Example 2

[0034] On the basis of Example 1, in this embodiment, as Figure 2 and Figure 3 The utility model discloses a multifunctional 3D printing sand mold cylinder liner positioning and heating device, the upper and lower ends of the cylinder liner positioning member 31 are respectively provided with a sand mold positioning circular platform 311 and a cylinder liner positioning circular platform 312; the lower part of the second 3D printing sand mold 2 is provided with six positioning grooves 22; the sand mold positioning circular platform 311 cooperates with the positioning groove 22 to complete positioning.

[0035] In particular, it is possible to consider using concave and convex molds for positioning, and to provide grooves and convex platforms on the sand mold positioning cone 311 and the positioning groove 22 respectively, so as to improve the stability and accuracy of positioning.

[0036] In this embodiment, Figure 2 The sand mold positioning cone 311 and the cylinder liner positioning piece 31 are combined to form a temperature measuring tube installation surface 313 on the end surface of the cylinder liner positioning piece 31; the temperature measuring tube 35 is set through the temperature measuring tube installation surface 313.

[0037] Specifically, the cylinder liner positioning piece can be made of aluminum.

[0038] Specifically, a high-precision cylinder liner positioning member 31 can be machined to ensure that the concentricity of the cylinder liner meets the casting tolerance accuracy requirement.

[0039] In this embodiment, Figure 1 and Figure 5 The second 3D printing sand mold 2 is provided with three groups of mounting holes 21; the mounting hole groups 21 include heating tube mounting holes 211 and temperature measuring tube mounting holes 212; the heating tube mounting holes 211 and temperature measuring tube mounting holes 212 are sequentially provided on the second 3D printing sand mold 2, and are getting closer and closer to the first 3D printing sand mold 1.

[0040] Specifically, a layered software interface may be used to design a sand mold to ensure the precise position and size of the heating tube mounting hole 211 and the temperature measuring tube mounting hole 212 .

[0041] In this embodiment, Figure 1 The upper portion of the screw 33 is disposed in the heating tube mounting hole 211 , and the upper portion of the temperature measuring tube 35 is disposed in the temperature measuring tube mounting hole 212 .

[0042] Specifically, when installing the screw rod 33 and the temperature measuring tube 35 , it is necessary to control the fitting tolerance to ensure the fitting accuracy between them and the heating tube installation hole 211 .

[0043] Specifically, the material selection of the screw 33 and the temperature measuring tube 35 needs to take into account the properties of high temperature resistance and corrosion resistance to adapt to the high temperature environment during the casting process.

[0044] In this embodiment, Figure 5 , the mounting hole groups 21 on the second 3D printing sand mold 2 are staggered with each other.

[0045] Specifically, the staggered mounting hole groups 21 on a group of the second 3D printed sand mold 2 can reduce the deformation of the sand mold during the casting process, thereby improving the precision and quality of the casting.

[0046] In this embodiment, Figure 4 , six cylinder liner placement ring limiters 23 are provided at the lower part of the second 3D printing sand mold 2.

[0047] The working principle of the above embodiment is:

[0048] The utility model discloses a multifunctional 3D printing sand mold cylinder liner positioning and heating device. The cylinder liner positioning cone 312 of the six cylinder liner positioning and heating components 3 cooperates with the first 3D printing sand mold 1 and the second 3D printing sand mold 2 to complete the precise positioning of the cylinder liner; the heating tube 34 is turned on to heat the cylinder liner positioning member 31, and the heat is transferred to the cylinder liner. Through one end of the temperature measuring tube 35, the heating condition of the cylinder liner is monitored in real time. After the designed cylinder liner heating temperature is reached, the sand mold is immediately cast.

[0049] The castings currently produced by this device have passed the corresponding tests, such as Figure 6 、 Figure 7 and Figure 8 It can be seen intuitively that there is no obvious gap around the cylinder liner, and the roundness of the processed cylinder liner is uniform. The cylinder liner bonding rate and cylinder liner positioning rate fully meet the technical requirements of the customer's drawings and actual use requirements.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principles of the present invention. These improvements should also be regarded as within the scope of protection of the present invention.

Claims

1. A multifunctional 3D printing sand mold cylinder liner positioning and heating device, characterized by: include: A first 3D printing sand mold (1), a set of second 3D printing sand molds (2), wherein the second 3D printing sand molds (2) are arranged on both sides of the first 3D printing sand mold (1); Six cylinder liner positioning heating components (3), wherein the cylinder liner positioning heating components (3) are arranged through the second 3D printing sand mold (2); The cylinder liner positioning heating assembly (3) comprises a cylinder liner positioning member (31), a cylinder liner placement ring (32), a screw (33), a heating tube (34), a temperature measuring tube (35) and a connecting nut (36); The cylinder liner positioning member (31) is arranged below the second 3D printing sand mold (2); the cylinder liner placement ring (32) is arranged on the outer peripheral surface of the cylinder liner positioning member (31); the screw (33) is arranged in the middle through hole of the cylinder liner positioning member (31); the heating tube (34) is arranged in the middle through hole of the screw (33); the temperature measuring tube (35) is arranged through the end surface of the cylinder liner positioning member (31) and is parallel to the heating tube (34); the screw (33) is connected to the second 3D printing sand mold (2) through a connecting nut (36).

2. The multifunctional 3D printing sand mold cylinder liner positioning and heating device according to claim 1 is characterized in that: The upper and lower ends of the cylinder liner positioning member (31) are respectively provided with a sand mold positioning truncated cone (311) and a cylinder liner positioning truncated cone (312); the lower portion of the second 3D printing sand mold (2) is provided with six positioning grooves (22); the sand mold positioning truncated cone (311) cooperates with the positioning grooves (22) to complete positioning.

3. The multifunctional 3D printing sand mold cylinder liner positioning and heating device according to claim 2 is characterized in that: The sand mold positioning cone (311) and the cylinder liner positioning piece (31) are combined on the end surface of the cylinder liner positioning piece (31) to form a temperature measuring tube installation surface (313); the temperature measuring tube (35) is arranged through the temperature measuring tube installation surface (313).

4. The multifunctional 3D printing sand mold cylinder liner positioning and heating device according to claim 1 is characterized in that: The second 3D printing sand mold (2) is provided with three groups of mounting holes (21); the mounting hole groups (21) include heating tube mounting holes (211) and temperature measuring tube mounting holes (212); the heating tube mounting holes (211) and temperature measuring tube mounting holes (212) are sequentially provided on the second 3D printing sand mold (2) and are increasingly close to the first 3D printing sand mold (1).

5. The multifunctional 3D printing sand mold cylinder liner positioning and heating device according to claim 4 is characterized in that: The upper portion of the screw (33) is disposed in the heating tube mounting hole (211), and the upper portion of the temperature measuring tube (35) is disposed in the temperature measuring tube mounting hole (212).

6. The multifunctional 3D printing sand mold cylinder liner positioning and heating device according to claim 4, characterized in that: The mounting hole groups (21) on the group of second 3D printing sand molds (2) are staggered with each other.

7. The multifunctional 3D printing sand mold cylinder liner positioning and heating device according to claim 1, characterized in that: Six cylinder sleeve placement ring limiters (23) are provided at the lower part of the second 3D printing sand mold (2).

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