A die-casting mold using a composite core-pulling structure

Abstract

The present invention relates to a die-casting mold using a composite core-pulling structure, including an upper mold frame and a lower mold frame, an upper mold core and a lower mold core stacked up and down are installed between the upper mold frame and the lower mold frame, a mold cavity is provided between the upper mold core and the lower mold core, a front core-pulling block, a rear core-pulling block and a right core-pulling hole column are respectively provided at the front, rear and right sides of the upper end of the lower mold core, each core-pulling block and the right core-pulling hole column are equipped with a driving device, and a composite core-pulling structure is provided on the right side of the upper mold frame. The present invention designs a new composite core-pulling structure, which effectively reduces the mold height, makes the layout of the movable and fixed molds more reasonable, and reduces the shaking and deformation of the product caused by the pulling of the slider, and the mold pressing plate can be used normally without the need for a special installation method.

Description

Technical Field

[0001] The invention relates to the technical field of automobile engine valve body production, in particular to a die-casting mold using a composite core-pulling structure. Background Art

[0002] The engine is a machine that can convert other forms of energy into mechanical energy. The power of the car comes from the engine. The engine is the heart of the car and affects the power and economy of the car. The engine valve body is an important component of the engine, such as Fig.11 As shown, the engine valve body includes a valve body main body 24, and the front and rear of the valve body main body 24 are respectively provided with an inner cavity 45, and the right side of the valve body main body 24 is provided with a plurality of straight side holes 46, and the sides of the upper end of the valve body main body 24 are respectively provided with two mounting parts 25, and each mounting part 25 is provided with at least one oblique hole 26. The structural specific molding of the engine valve body is relatively difficult, and the oblique holes 26 on the two mounting parts 25 are at two different angles. Since the distance between the two sets of double-angle core pulling is relatively close, and the mold structure is complex, it will lead to problems such as insufficient position for press installation plate, inability to layout the built-in spot cooling of the core pulling, the overall height of the mold is too high to be suitable for the 500T press, and interference between the core pulling and the large bar.

[0003] Case 1: Using the fixed mold independent conversion mechanism for core pulling, the fixed mold side can only press one pressure plate, there is a safety hazard, and the core pulling angle and the core pulling angle are compensated by sliding, the life of the parts is low, if the angle design is consistent, the cylinder and the large bar interfere.

[0004] Case 2: The movable mold is independently inclined. The overall mold is too high to be installed using a 500T press. A larger press is required. At the same time, the product may be deformed by the slider.

[0005] Case 3: Fixed mold hidden cylinder direct pull, the main problem is that the cylinder life is short and the heat dissipation condition is not good. The overall mold is too high to try the 500T press, and the inclined core pulling pin cannot be designed with cooling water.

[0006] Case 4: The fixed mold conversion mechanism is independently drawn, and only one pressure plate can be pressed on one side of the fixed mold. The other one needs to be arranged on the top, so the mold cannot be installed on the 500T press. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a die-casting mold with a composite core-pulling structure, which effectively reduces the mold height, makes the layout of the movable and fixed molds more reasonable, and at the same time reduces the shaking and deformation of the product caused by the pulling of the slider, and the mold pressure plate can be used normally without the need for special installation methods.

[0008] The technical solution adopted by the present invention to solve its technical problems is: to provide a die-casting mold with a composite core-pulling structure, including an upper mold frame and a lower mold frame, an upper mold core and a lower mold core stacked up and down are installed between the upper mold frame and the lower mold frame, a mold cavity is provided between the upper mold core and the lower mold core, a front core-pulling block, a rear core-pulling block and a right core-pulling hole column are respectively provided at the front, rear and right sides of the upper end of the lower mold core, each core-pulling block and the right core-pulling hole column are equipped with a driving device, a composite core-pulling structure is provided on the right side of the upper mold frame, and the composite core-pulling structure includes a core-pulling cylinder, a reversing plate and a core-pulling pin guide block, a chamber is provided on the right side of the upper part of the upper mold frame, and an inclined sliding core-pulling pin guide block is respectively installed on the front and rear sides of the interior of the chamber, the two core-pulling pin guide blocks move relatively close to or relatively away from each other, the core-pulling pin guide block slides upward from left to right, and the At least one core pulling pin is fixed on the core pulling pin guide block, one end of the core pulling pin obliquely passes through the upper mold core downward, the interior of the chamber is located between the two core pulling pin guide blocks and two reversing plate guide rails are symmetrically arranged, each reversing plate guide rail is provided with a horizontally arranged inclined track on the outer side, the spacing between the two inclined tracks gradually increases from left to right, a reversing plate is slidably connected to each inclined track, and an inclined groove is provided on the outer side of each reversing plate, and an inclined protrusion cooperating with the inclined groove is provided on the side of the core pulling pin guide block, and a Y-shaped pull block is installed in the interior of the chamber between the two reversing plate guide rails for transverse sliding, two pull block convex strips are provided at one end of the Y-shaped pull block, and the spacing between the two pull block convex strips gradually decreases from left to right, the reversing plate slides along the corresponding pull block convex strip, and the other end of the Y-shaped pull block is connected to the core pulling cylinder installed on the right side of the upper mold frame.

[0009] As a supplement to the technical solution described in the present invention, the upper end and the right side of the chamber are open, the upper port of the chamber is sealed by a cover plate, and a plurality of support columns are installed at the lower end of the cover plate, and the lower end of the support column is used to press the reversing plate guide rail.

[0010] As a supplement to the technical solution described in the present invention, the core pulling pin is fixed on the core pulling pin guide block through a core pulling pin fixing plate, and the core pulling pin guide block and the core pulling pin fixing plate are connected and fixed by fasteners.

[0011] As a supplement to the technical solution described in the present invention, a core-pulling guide rail is installed on each of the front and rear sides of the chamber, and the core-pulling pin guide block is installed in the corresponding core-pulling guide rail to slide obliquely.

[0012] As a supplement to the technical solution described in the present invention, the Y-shaped pull block includes a pull rod and a base. The pull rod is a long strip structure with an installation notch at one end. A docking ridge is provided in the middle of the base. The docking ridge cooperates with the installation notch and is fixed with fasteners. Two pull block ridges are arranged on the base and are respectively located on both sides of the docking ridge.

[0013] As a supplement to the technical solution described in the present invention, one end of the piston rod of the core-pulling cylinder is provided with a T-shaped clamp, and the other end of the pull rod is provided with a clamping groove that cooperates with the T-shaped clamp.

[0014] As a supplement to the technical solution described in the present invention, a long boss is provided at the lower end of the upper mold core located on the left side of the mold cavity, and a long groove matching the long boss is opened at the upper end of the lower mold core.

[0015] As a supplement to the technical solution described in the present invention, the driving device includes a driving cylinder and a slider seat. A slider seat is slidably installed at the front, rear and right side of the upper end of the upper mold core. The three slider seats are respectively connected to the front core pulling block, the rear core pulling block and the right core pulling hole column. The outer side of the lower mold frame is installed with a driving cylinder connected to the slider seat one by one.

[0016] As a supplement to the technical solution described in the present invention, a diverter cone is installed at the upper end of the front core pulling block, a barrel arranged outside the diverter cone is arranged in the upper part of the upper mold frame, and a casting channel is arranged at the lower end of the upper mold core between the barrel and the mold cavity. The casting channel is bifurcated to form a main feed channel and an auxiliary feed channel. The main feed channel is arranged between the barrel and the front end of the mold cavity, and the auxiliary feed channel is arranged on the outside close to the core pulling pin. The outlet of the main feed channel and the outlet of the auxiliary feed channel are respectively located on both sides of the core pulling pin.

[0017] As a supplement to the technical solution described in the present invention, a mold foot is installed on each side of the lower end of the lower mold frame, and a push rod assembly is arranged between the two mold feet. The push rod assembly is equipped with multiple push rods inserted into the mold cavity.

[0018] Beneficial effects: The present invention relates to a die-casting mold using a composite core-pulling structure, and a new composite core-pulling structure is designed to effectively reduce the mold height, making the layout of the movable and fixed molds more reasonable, while reducing the shaking and deformation of the product caused by the pulling of the slider, and the mold pressing plate can be used normally without special installation methods; the composite core-pulling structure includes components such as a core-pulling cylinder, a reversing plate, and a core-pulling pin guide block. The Y-shaped pull block is pulled to the right by the core-pulling cylinder, and the two pull block convex strips on the Y-shaped pull block respectively drive the two reversing plates to move relatively away from each other along their respective inclined tracks. Due to the inclined groove on the outer side of the reversing plate and the side of the core-pulling pin guide block The inclined protrusion cooperates to force the two core pulling pin guide blocks to move upward from left to right, and at the same time, the two core pulling pin guide blocks move away from each other, and the core pulling pin moves with the core pulling pin guide blocks, so that the lower end of the core pulling pin is tilted and separated from the molded product; the pouring runner is bifurcated to form a main feed runner and an auxiliary feed runner, and the outlet of the main feed runner and the outlet of the auxiliary feed runner are respectively located on both sides of the core pulling pin. Such runner gate design and layout make the flow on both sides of the core pulling pin basically consistent, and the simulated upper flow state arrives basically synchronously, so that the core pulling pin is subjected to balanced force, and at the same time reduces the problem of deformation of the core pulling pin due to pressurization during the die-casting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of the present invention in the left-side viewing direction;

[0020] Figure 2 It is a schematic diagram of the structure of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the upper mold frame and the upper mold core of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the lower mold frame and the lower mold core of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the lower mold core of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the upper mold frame and the upper mold core of the present invention at different angles;

[0025] Figure 7 It is a structural schematic diagram of the upper mold core and the composite core-pulling structure of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the core pulling cylinder, the Y-shaped pulling block, the reversing plate guide rail and the core pulling pin guide block of the present invention;

[0027] Fig. 9 It is a structural schematic diagram of the Y-shaped pull block of the present invention;

[0028] Fig.10It is a structural schematic diagram of the upper mold core of the present invention;

[0029] Fig.11 It is a structural schematic diagram of the processed product of the present invention.

[0030] Illustration: 1. Upper mold frame, 2. Cover plate, 3. Chamber, 4. Core pulling cylinder, 5. Support column, 6. Y-type pull block, 7. Upper mold core, 8. Reversing plate guide rail, 9. Reversing plate, 10. Core pulling guide rail, 11. Core pulling pin guide block, 12. Core pulling pin, 13. Inclined track, 14. Pull block convex strip, 15. Core pulling pin fixing plate, 16. T-type clamp, 17. Slot, 18. Pull rod, 19. Base, 20. Docking convex strip, 21. Installation notch, 22. Bevel groove, 23. Oblique protrusion, 24. Valve body Main body, 25. Mounting part, 26. Oblique hole, 27. Composite core-pulling structure, 28. Lower mold frame, 29. Mold foot, 30. Driving cylinder, 31. Barrel, 32. Lower mold core, 33. Ejector rod assembly, 34. Ejector rod, 35. Diverter cone, 36. Front core-pulling block, 37. Rear core-pulling block, 38. Slider seat, 39. Right core-pulling hole column, 40. Long groove, 41. Long boss, 42. Casting runner, 43. Main feed runner, 44. Auxiliary feed runner, 45. Inner cavity, 46. Straight side hole. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0032] The embodiment of the present invention relates to a die-casting mold using a composite core-pulling structure. Figure 1 It is a basic view in the left-view direction. The directional qualifiers such as front, back, left, right, up and down are used to describe the position of the mold based on its usage status. Left and right correspond to the two sides in the length direction of the lower mold frame 28, and front and rear correspond to the two sides in the width direction of the lower mold frame 28.

[0033] like Figure 1-11 As shown, the die-casting mold includes an upper mold frame 1 and a lower mold frame 28, between which an upper mold core 7 and a lower mold core 32 stacked up and down are installed, and a mold cavity is provided between the upper mold core 7 and the lower mold core 32, and a front core pulling block 36, a rear core pulling block 37 and a right core pulling hole column 39 are respectively provided at the front, rear and right side of the upper end of the lower mold core 32, and each core pulling block and the right core pulling hole column 39 are equipped with a driving device.

[0034] As a structural description of the drive device, refer to Figure 4As shown, the driving device includes a driving cylinder 30 and a slider seat 38. A slider seat 38 is slidably installed at the front, rear and right side of the upper end of the upper mold core 7. The three slider seats 38 are respectively connected to the front core pulling block 36, the rear core pulling block 37 and the right core pulling hole column 39. The outer side of the lower mold frame 28 is installed with a driving cylinder 30 that is connected to the slider seat 38 one by one.

[0035] A composite core pulling structure 27 is arranged on the right side of the upper mold frame 1, and the composite core pulling structure 27 includes a core pulling cylinder 4, a reversing plate 9 and a core pulling pin guide block 11. The upper right side of the upper mold frame 1 has a chamber 3, and a core pulling pin guide block 11 is installed on the front and rear sides of the chamber 3. The two core pulling pin guide blocks 11 move relatively close to each other or relatively away from each other. The core pulling pin guide block 11 slides upward from left to right. At least one core pulling pin 12 is fixed on the core pulling pin guide block 11, and one end of the core pulling pin 12 passes through the upper mold core 7 obliquely downward. Two reversing plate guide rails 8 are symmetrically arranged between the two core pulling pin guide blocks 11 inside the chamber 3, and the outer side of each reversing plate guide rail 8 is A horizontally arranged inclined track 13 is provided, and the spacing between the two inclined tracks 13 gradually increases from left to right. A reversing plate 9 is slidably connected to each inclined track 13, and an inclined groove 22 is provided on the outer side of each reversing plate 9. The side of the core pulling pin guide block 11 is provided with an inclined protrusion 23 that cooperates with the inclined groove 22. A Y-shaped puller block 6 that slides laterally is installed between the two reversing plate guide rails 8 inside the chamber 3. Two puller block ridges 14 are provided at one end of the Y-shaped puller block 6. The spacing between the two puller block ridges 14 gradually decreases from left to right. The reversing plate 9 slides along the corresponding puller block ridge 14, and the other end of the Y-shaped puller block 6 is connected to the core pulling cylinder 4 installed on the right side of the upper mold frame 1.

[0036] Reference Figure 1 , Figure 2 and Figure 4As shown, the upper end of the front core pulling block 36 is equipped with a diverter cone 35, the upper part of the upper mold frame 1 is provided with a barrel 31 sleeved outside the diverter cone 35, and the lower end of the upper mold core 7 is located between the barrel 31 and the mold cavity and is provided with a pouring channel 42, the pouring channel 42 is bifurcated to form a main feed channel 43 and an auxiliary feed channel 44, the main feed channel 43 is arranged between the barrel 31 and the front end of the mold cavity, and the auxiliary feed channel 44 is arranged outside the core pulling pin 12. On the other hand, the outlet of the main feed channel 43 and the outlet of the auxiliary feed channel 44 are respectively located on both sides of the core pulling pin 12. Such a runner gate design and layout make the flow on both sides of the core pulling pin 12 basically consistent, and the simulated upper flow state arrives basically synchronously, so that the core pulling pin 12 is subjected to balanced force, and at the same time reduces the problem of deformation of the core pulling pin 12 due to pressurization during the die-casting process; and the diverter cone 35 moves with the front core pulling block 36, which can avoid interference between the diverter cone 35 and the product when it is ejected.

[0037] Reference Figure 1 and Figure 2 As shown, a mold foot 29 is installed on each side of the lower end of the lower mold frame 28, and a push rod assembly 33 is arranged between the two mold feet 29. The push rod assembly 33 is installed with multiple push rods 34 inserted into the mold cavity; the push rod assembly 33 controls the push rod 34 to eject the molded product.

[0038] When it is necessary to produce the engine valve body, the upper mold frame 1 and the upper mold core 7 are controlled to close with the lower mold frame 28 and the lower mold core 32, the rear end of the front core pulling block 36 assists in forming the front inner cavity 45, the front end of the rear core pulling block 37 assists in forming the rear inner cavity 45, and the right core pulling hole column 39 assists in forming the straight side hole 46. After that, the molten metal enters the mold from the barrel 31 and is diverted by the diverter cone 35 to fill the mold cavity, and the pressure is maintained in the mold by the die-casting machine. After the product is formed, the mold is opened, the upper mold frame 1 and the upper mold core 7 are moved up, and the Y-shaped pull block 6 is pulled to the right by the core pulling cylinder 4. The two pull block convex strips 1 on the Y-shaped pull block 6 The two reversing plates 9 are driven to move away from each other along their respective inclined tracks 13. Since the inclined groove 22 on the outer side of the reversing plate 9 cooperates with the inclined protrusion 23 on the side of the core pulling pin guide block 11, the two core pulling pin guide blocks 11 are forced to move upward from left to right. At the same time, the two core pulling pin guide blocks 11 move away from each other, and the core pulling pin 12 moves with the core pulling pin guide block 11, so that the lower end of the core pulling pin 12 is inclined and separated from the formed inclined hole 26. Then, the three driving cylinders 30 control the front core pulling block 36, the rear core pulling block 37 and the right core pulling hole column 39 to move outward. Finally, the ejector assembly 33 controls the ejector 34 to eject the product.

[0039] The present invention designs a new composite core-pulling structure, which effectively reduces the mold height, makes the layout of the movable and fixed molds more reasonable, and reduces the shaking and deformation of the product caused by the pulling of the slider. The mold pressing plate can be used normally without the need for special installation methods.

[0040] Reference Figure 2 and Figure 6 As shown, the upper end and the right side of the chamber 3 are open, which is convenient for the installation of components such as the reversing plate guide rail 8, the Y-shaped pull block 6, the core pulling pin guide block 11, etc. The upper port of the chamber 3 is sealed by the cover plate 2 to protect the components in the chamber 3. The cover plate 2 is connected and fixed to the upper mold frame 1 with fasteners; a plurality of support columns 5 are installed at the lower end of the cover plate 2, and the lower end of the support column 5 is used to press the reversing plate guide rail 8, and the support column 5 is a rubber column.

[0041] Reference Figure 7 As shown, a core pulling guide rail 10 is installed on each of the front and rear sides of the chamber 3, and the core pulling pin guide block 11 is installed in the corresponding core pulling guide rail 10 to slide obliquely; the core pulling guide rail 10 guides the core pulling pin guide block 11 to slide obliquely stably.

[0042] Reference Figure 8 As shown, the core pulling pin 12 is fixed on the core pulling pin guide block 11 through the core pulling pin fixing plate 15, and the core pulling pin guide block 11 and the core pulling pin fixing plate 15 are connected and fixed by fasteners.

[0043] As a structural description of the Y-shaped pull block 6, the Y-shaped pull block 6 includes a pull rod 18 and a base 19. The pull rod 18 is a long strip structure, and a mounting notch 21 is opened at one end of the pull rod 18. A docking ridge 20 is provided in the middle of the base 19. The docking ridge 20 cooperates with the mounting notch 21 and is fixed with fasteners. Two pull block ridges 14 are arranged on the base 19 and are respectively located on both sides of the docking ridge 20.

[0044] As a connection description of the core pulling cylinder 4, refer to Figure 8 and Fig. 9 As shown, a T-shaped clamp 16 is provided at one end of the piston rod of the core-pulling cylinder 4, and the piston rod of the core-pulling cylinder 4 is quickly connected to the Y-shaped pull block 6 through the clamping cooperation between the T-shaped clamp 16 and the clamping groove 17 provided at the other end of the pull rod 18.

[0045] Reference Figure 3 and Figure 4 As shown, the lower end of the upper mold core 7 is located on the left side of the mold cavity and is provided with a long boss 41, and the upper end of the lower mold core 32 is provided with a long groove 40 that cooperates with the long boss 41; the cooperation between the long groove 40 and the long boss 41 ensures the accuracy of the mold cavity and improves product quality.

[0046] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0047] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0048] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0049] The above is a detailed introduction to a die-casting mold with a composite core-pulling structure provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A die-casting mold using a composite core-pulling structure, comprising an upper mold frame (1) and a lower mold frame (28), an upper mold core (7) and a lower mold core (32) stacked up and down are installed between the upper mold frame (1) and the lower mold frame (28), a mold cavity is provided between the upper mold core (7) and the lower mold core (32), and the characteristics are: A front core pulling block (36), a rear core pulling block (37) and a right core pulling hole column (39) are respectively arranged at the front, rear and right sides of the upper end of the lower mold core (32). Each core pulling block and the right core pulling hole column (39) are equipped with a driving device. A composite core pulling structure (27) is arranged on the right side of the upper mold frame (1). The composite core pulling structure (27) includes a core pulling cylinder (4), a reversing plate (9) and a core pulling pin guide block (11). The upper right side of the upper mold frame (1) The side of the mold has a chamber (3), and a tilted sliding core pulling pin guide block (11) is installed on the front and rear sides of the chamber (3). The two core pulling pin guide blocks (11) move closer to each other or move away from each other. The core pulling pin guide block (11) slides upward from left to right. At least one core pulling pin (12) is fixed on the core pulling pin guide block (11), and one end of the core pulling pin (12) passes through the upper mold core (7) at an angle downward. Two reversing plate guide rails (8) are symmetrically arranged between the two core pulling pin guide blocks (11) inside the chamber (3). The outer side of each reversing plate guide rail (8) is provided with a horizontally arranged tilted track (13). The spacing between the two tilted tracks (13) gradually increases from left to right. A reversing plate (9) is slidably connected to each tilted track (13), and an inclined groove (22) is provided on the outer side of each reversing plate (9). The side of the core pulling pin guide block (11) is provided with a groove that cooperates with the inclined groove (22). The chamber (3) is provided with a Y-shaped pull block (6) which slides laterally between the two reversing plate guide rails (8). One end of the Y-shaped pull block (6) is provided with two pull block convex strips (14). The spacing between the two pull block convex strips (14) gradually decreases from left to right. The reversing plate (9) slides along the corresponding pull block convex strips (14). The other end of the Y-shaped pull block (6) is connected to a core pulling cylinder (4) installed on the right side of the upper mold frame (1).

2. A die-casting mold with a composite core-pulling structure according to claim 1, characterized in that: The upper end and right side of the chamber (3) are open, and the upper port of the chamber (3) is sealed by a cover plate (2). A plurality of support columns (5) are installed at the lower end of the cover plate (2), and the lower ends of the support columns (5) are used to press the reversing plate guide rail (8).

3. The die-casting mold with a composite core-pulling structure according to claim 1, characterized in that: The core pulling pin (12) is fixed to the core pulling pin guide block (11) via a core pulling pin fixing plate (15), and the core pulling pin guide block (11) and the core pulling pin fixing plate (15) are connected and fixed via fasteners.

4. The die-casting mold with a composite core-pulling structure according to claim 1, characterized in that: A core pulling guide rail (10) is installed on each of the front and rear sides of the chamber (3), and the core pulling pin guide block (11) is installed in the corresponding core pulling guide rail (10) to slide obliquely.

5. The die-casting mold with a composite core-pulling structure according to claim 1, characterized in that: The Y-shaped pull block (6) comprises a pull rod (18) and a base (19). The pull rod (18) is in the form of an elongated strip. A mounting notch (21) is provided at one end of the pull rod (18). A docking convex strip (20) is provided in the middle of the base (19). The docking convex strip (20) cooperates with the mounting notch (21) and is fixed by fasteners. Two pull block convex strips (14) are provided on the base (19) and are respectively located on both sides of the docking convex strip (20).

6. The die-casting mold with a composite core-pulling structure according to claim 5, characterized in that: One end of the piston rod of the core-pulling cylinder (4) is provided with a T-shaped clamp (16), and the other end of the pull rod (18) is provided with a clamping groove (17) that matches the T-shaped clamp (16).

7. The die-casting mold with a composite core-pulling structure according to claim 1, characterized in that: The lower end of the upper mold core (7) is located on the left side of the mold cavity and is provided with a long strip boss (41), and the upper end of the lower mold core (32) is provided with a long strip groove (40) that cooperates with the long strip boss (41).

8. The die-casting mold with a composite core-pulling structure according to claim 1, characterized in that: The driving device comprises a driving cylinder (30) and a slider seat (38); a slider seat (38) is slidably mounted at the front, rear and right sides of the upper end of the upper mold core (7); the three slider seats (38) are respectively connected to the front core pulling block (36), the rear core pulling block (37) and the right core pulling hole column (39); and a driving cylinder (30) connected to the slider seats (38) in a one-to-one correspondence is mounted on the outer side of the lower mold frame (28).

9. The die-casting mold with a composite core-pulling structure according to claim 1, characterized in that: A diverter cone (35) is installed at the upper end of the front core pulling block (36), a barrel (31) sleeved on the diverter cone (35) is arranged in the upper part of the upper mold frame (1), and a pouring channel (42) is arranged at the lower end of the upper mold core (7) between the barrel (31) and the mold cavity. The pouring channel (42) is bifurcated to form a main feed channel (43) and an auxiliary feed channel (44). The main feed channel (43) is arranged between the barrel (31) and the front end of the mold cavity, and the auxiliary feed channel (44) is arranged on the outside close to the core pulling pin (12). The outlet of the main feed channel (43) and the outlet of the auxiliary feed channel (44) are respectively located on both sides of the core pulling pin (12).

10. The die-casting mold with a composite core-pulling structure according to claim 1, characterized in that: A mold foot (29) is installed on each side of the lower end of the lower mold frame (28), and a push rod assembly (33) is arranged between the two mold feet (29). The push rod assembly (33) is installed with a plurality of push rods (34) inserted into the mold cavity.

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