CN105081212A - Mold system for manufacturing draw gear body intermediate core - Google Patents

Abstract

The invention relates to the technical field of mold systems, in particular to a mold system for making the intermediate core of a coupler body, including a lower mold assembly, an upper mold assembly, a core shooting assembly and a top core assembly, and the upper surface of the lower mold assembly is provided with The first core groove, the second core groove is provided on the lower surface of the upper mold assembly, the upper mold assembly is provided on the lower mold assembly to form a mold, and the first core groove is matched with the second core groove A core cavity is formed, a core shooting assembly is arranged above the mold clamping, and a core ejector assembly is provided on one side of the core shooting assembly. In the present invention, the intermediate core material of the coupler body is injected into the core cavity of the clamping mold through the core shooting assembly, and then the intermediate core in the core cavity is blown and hardened by the upper core assembly and pushed out under pressure. The production speed of the intermediate core of the coupler body is fast, the core is hard, the outline is clear, the deformation is small, the surface quality is high, and the core is dropped accurately. The quality of the coupler body produced has been greatly improved.

Description

A mold system for making the middle core of coupler body

technical field

The invention relates to the technical field of mold systems, in particular to a mold system for making the middle core of a coupler body.

Background technique

The 104-type coupler is the connecting part between the upper group and the group of the high-speed rail EMU. It is a key component to ensure the smooth operation and safety of the EMU. The middle core of the original casting model is divided into two halves. During the bonding, the long and uneven middle half-core formed by each half is deformed and affects the product size, and it is also prone to partial misalignment and poor bonding, resulting in shrinkage cavities, shrinkage porosity, sand inclusions, etc. in the original casting. Due to problems such as poor surface quality and uneven wall thickness, a large number of welding repairs and treatments are required to meet product quality requirements during production, and the economic benefits are poor.

Contents of the invention

In order to overcome the deficiencies of the existing technology, the invention provides a mold system for making the middle core of the coupler body.

The technical solution adopted by the present invention to solve the technical problem is: a mold system for making the intermediate core of the coupler body, including a lower mold assembly, an upper mold assembly, a core shooting assembly and a top core assembly, and the lower mold assembly The upper surface is provided with a first core groove, the lower surface of the upper mold assembly is provided with a second core groove, the lower mold assembly is provided with an upper mold assembly to form a mold, and the lower mold assembly An upper mold assembly is provided on the part so that the first core groove and the second core groove cooperate to form a core cavity, a core shooting assembly is provided above the clamping mold, and a top core assembly is provided on one side of the core shooting assembly. The clamping mold is set under the top core assembly after the core is shot under the core shooting assembly and moved.

According to another embodiment of the present invention, it further includes that each of the four corners of the upper mold assembly is provided with a positioning hole, and the inside of the four positioning holes on the upper mold assembly is also provided with a limit hole, so that Each of the limiting holes is also provided with a limiting block, the second core groove is provided with a number of through holes, the core shooting assembly includes a core shooting plate, and the core shooting plate is provided with a The core shooting nozzle with the same number of through holes on the second core slot, a positioning rod 1 is also provided on the four corners of the core shooting plate, and the core top assembly includes a top core plate and a top core plate arranged under the top core plate. Air blowing plate, the top core plate is provided with the same number of ejector pins as the number of through holes on the second core groove, the air blowing plate is provided with a hole corresponding to the ejector pin, and the ejector pin passes through the hole One passes through the air blowing plate, and each of the four corners of the top core plate is provided with a positioning rod 2, and the blowing plate is provided with a hole 2 corresponding to the positioning rod 2, and the positioning rod 2 passes through the hole 2 Through the air blowing plate, there is a limit rod on the inner side of each positioning rod two on the top core plate, and a hole three corresponding to the limit rod is provided on the air blowing plate.

The beneficial effect of the present invention is that the intermediate core material of the coupler body is injected into the core cavity of the mold clamping through the core shooting assembly, and then the intermediate core of the coupler body in the core cavity is blown and hardened by the ejector core assembly and ejected. , This mold system has fast forming speed in the middle core of hook body, hard core, clear outline, less deformation, high surface quality and accurate core drop. The quality of the coupler body produced has been greatly improved.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the structural representation of mold clamping of the present invention;

Fig. 2 is a schematic structural view of the core shooting assembly of the present invention;

Fig. 3 is a schematic structural view of the top core assembly of the present invention;

Fig. 4 is a schematic diagram of the state of the mold clamping working under the core shooting assembly of the present invention;

Fig. 5 is a schematic diagram of the state of the mold clamping working under the top core assembly of the present invention;

Fig. 6 is the top view of mold clamping of the present invention;

In the figure 1. Lower mold assembly, 2. Upper mold assembly, 3. Core shooting assembly, 4. Top core assembly, 5. First Ni core groove, 6. Second Ni core groove, 7. Ni core cavity, 8. Positioning hole, 9. Through hole, 10. Core shooting plate, 11. Core shooting nozzle, 12. Positioning rod one, 13. Top core plate, 14. Blowing plate, 15. Ejector rod, 16. Limiting hole , 17. limit block, 18. hole one, 19. positioning rod two, 20. hole two, 21. limit rod, 22. hole three.

detailed description

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 6, a mold system for making the intermediate core of the coupler body includes a lower mold assembly 1, an upper mold assembly 2, a core shooting assembly 3 and a top core assembly 4, The upper surface of the lower mold assembly 1 is provided with a first core groove 5, the lower surface of the upper mold assembly 2 is provided with a second core groove 6, and the lower mold assembly 1 is provided with an upper mold assembly 2 to form a mold clamping , the lower mold assembly 1 is provided with an upper mold assembly 2 so that the first core groove 5 cooperates with the second core groove 6 to form a core cavity 7, and a core shooting assembly 3 is arranged above the clamping mold, and the core shooting assembly 3 is one The top core assembly 4 is arranged on the side, and the clamping mold is set under the top core assembly 4 after the core is shot under the core shooting assembly 3 after being moved. Preferably, each of the four corners of the upper die assembly 2 is provided with a positioning hole 8, and the inner sides of the four positioning holes 8 on the upper die assembly 2 are respectively provided with a limit hole 16, each limit hole 16 inside is also respectively provided with a limit block 17, the second core groove 6 is provided with several through holes 9, the core shooting assembly 3 includes a core shooting plate 10, and the core shooting plate 10 is provided with the second core groove. 6. There are core shooting nozzles 11 with the same number of through holes 9. A positioning rod 12 is also provided on the four corners of the core shooting board 10. The top core assembly 4 includes a top core board 13 and a blowing nozzle arranged under the top core board 13. Air plate 14, top core plate 13 is provided with the same ejector pin 15 of through hole 9 quantity as on the second core groove 6, and blowing plate 14 is provided with hole one 18 corresponding with ejector pin 15, ejector pin 15 Through the hole one 18 through the blowing plate 14, the four corners of the top core plate 13 are respectively provided with a positioning rod two 19, the blowing plate 14 is provided with the hole two 20 corresponding to the positioning rod two 19, the positioning rod two 19 passes through the air blowing plate 14 through hole two 20, and each positioning rod two 19 on the top core board 13 has a limit rod 21 on the inner side, and the blow plate 14 is provided with a hole three 22 corresponding to the limit rod 21 .

When the present invention is working, in order to increase the strength of the core, a mandrel and a cold iron (not shown in the figure) are provided in the first core groove 5 of the lower mold assembly 1, and then an upper mold assembly 1 is provided with an upper The mold assembly 2 forms a mold clamping, and the core shooting is performed under the core shooting assembly 3 before the mold clamping. When working, as shown in Figure 4, the core shooting plate 10 moves downward under the action of the oil cylinder, and the four corners of the core shooting plate 1 The positioning rod 12 on the upper mold assembly 2 is inserted into the positioning holes 8 on the four corners of the upper mold assembly 2 for positioning, and the core shooting nozzle 11 on the core shooting plate 10 is inserted into the channel on the second core groove 6 on the upper mold assembly 2. Sand shooting is carried out in the hole 9 to form a core. After the injection is completed, move the mold clamping to the bottom of the top core assembly 4, as shown in FIG. 14, wherein the air blowing plate 14 is fixed on the equipment, and the top core plate 13 moves downward through the action of the oil cylinder. When the top core plate 13 moves downward, the four positioning rods 19 are inserted into the four positioning holes on the upper mold assembly 2 Positioning in 8, the push rod 15 enters the through hole 9 above the second core groove 6 to flatten the residual sand in the through hole 9, because the diameter of the push rod 15 is less than the diameter of the through hole 9, the push rod 15 presses After flattening the core, blow air through the gap between the ejector pin 15 and the through hole 9 to harden the core, and withdraw the lower mold assembly 1 after hardening, in order to ensure that the core remains In the upper mold assembly 2, leave a section of core pulling column on the core shooting nozzle 11, and after the entire core is left in the second core groove 6 of the upper mold assembly 2, start the oil cylinder on the core shooting plate 10 again, Press the core shooter 10 down again, relying on the strength of the ejector rod 15 to eject the core. During the ejection process, in order to prevent the core board from directly pressing against the blowing plate, the blowing plate will be deformed and the screws will be tightened. Loose, a limit rod 21 is provided on the core shooting plate 10, and the limit rod 21 is inserted into the limit hole 16 provided on the upper mold assembly 2, and the limit block 17 in the limit hole 16 is pushed out after a small distance. The output force directly acts on the upper mold cavity through the shoulder. The ejected core falls on the core-connecting car to connect the core.

The present invention injects the intermediate core material of the coupler body into the core cavity of the clamping mold through the core shooting assembly, and then blows and hardens the intermediate core of the coupler body in the core cavity through the top core assembly and ejects it. The production speed of the intermediate core of the coupler body is fast, the core is hard, the outline is clear, the deformation is small, the surface quality is high, and the core is dropped accurately. The quality of the coupler body produced has been greatly improved.

Claims (2)

1. A mold system for making the intermediate core of the coupler body, comprising a lower mold assembly (1), an upper mold assembly (2), a core shooting assembly (3) and a top core assembly (4), characterized in that the The upper surface of the lower mold assembly (1) is provided with a first core groove (5), and the lower surface of the upper mold assembly (2) is provided with a second core groove (6). The piece (1) is provided with an upper mold assembly (2) to form a mold clamping, and the lower mold assembly (1) is provided with an upper mold assembly (2) so that the first Ni core groove (5) and the second Ni core groove The core groove (6) cooperates to form a core cavity (7), the core shooting assembly (3) is arranged above the clamping mold, and the top core assembly (4) is provided on one side of the core shooting assembly (3). The mold is set under the top core assembly (4) after the core is shot under the core shooting assembly (3) after being moved. 2. A mold system for making the middle core of the coupler body according to claim 1, characterized in that, each of the four corners of the upper mold assembly (2) is provided with a positioning hole (8), the There is also a limit hole (16) inside each of the four positioning holes (8) on the upper mold assembly (2), and each limit hole (16) is also equipped with a limit block (17) , the second core groove (6) is provided with several through holes (9), the core shooting assembly (3) includes a core shooting plate (10), and the core shooting plate (10) is provided with There are core shooting nozzles (11) with the same number of through holes (9) on the second core slot (6), and a positioning rod (12) is respectively provided on the four corners of the core shooting plate (10). The top core assembly (4) includes a top core plate (13) and an air blowing plate (14) arranged under the top core plate (13), and the top core plate (13) is provided with a second core groove (6 ) with the same number of ejector pins (15) in the upper through holes (9), the blowing plate (14) is provided with a hole one (18) corresponding to the ejector pin (15), and the ejector pin (15) passes through Hole 1 (18) passes through the blowing plate (14), and a positioning rod 2 (19) is provided on each of the four corners of the top core plate (13), and a positioning rod 2 (19) is provided on the blowing plate (14). Hole 2 (20) corresponding to rod 2 (19), the positioning rod 2 (19) passes through the hole 2 (20) through the blowing plate (14), and each positioning rod on the top core board (13) There is a limit rod (21) on the inner side of the two (19), and the hole three (22) corresponding to the limit rod (21) is provided on the blowing plate (14).