Integrated cooling fin forming structure for die-casting die

Abstract

The integrated cooling fin forming structure comprises a lower die base, a lower die core and a die cavity structure, the lower die core is installed in the middle of the upper end face of the lower die base in an embedded mode, and the concave die cavity structure is arranged in the middle of the upper end face of the lower die core. A cooling fin forming insert with the lower end penetrating through the lower mold core and the lower mold base is embedded in the middle of the mold cavity structure, the cooling fin forming insert comprises a plurality of sheet-shaped bodies, middle forming grooves and side forming grooves, and the sheet-shaped bodies are vertically arranged side by side in an attached mode; at least one middle forming groove is formed in the middle of the upper end face of each sheet-shaped body, side forming grooves are formed between the adjacent sheet-shaped bodies, internal threaded holes are formed in the lower ends of the sheet-shaped bodies, and threaded lead screws are vertically installed on the internal threaded holes. The mold has the characteristics of simple structure, low assembly difficulty, convenience in worker maintenance, convenience in product demolding and the like.

Description

Technical Field

[0001] The invention relates to the technical field of die-casting die accessories, and in particular to an integrated heat sink molding structure for a die-casting die. Background Art

[0002] The cylinder structure generally works in a high temperature and high pressure environment. In order to enable the cylinder structure to better complete the work and improve the service life of the cylinder structure, some heat dissipation structures need to be designed on the surface of the cylinder. Conventional heat dissipation structures are some sheet structures, and the cylinder structure is generally produced by die-casting molds. When the die-casting mold is produced, sheet inserts are usually selected to assist the die-casting mold to form the heat dissipation structure. However, a very large clamping force will be formed between the sheet inserts and the heat dissipation structure. In order to facilitate product demoulding, a large number of ejector structures need to be installed between the sheet inserts. Due to the long-term use of the ejector, these ejector structures need to be replaced from time to time. Each replacement requires a lot of time and manpower to reassemble. In order to solve the above problems, it is necessary to design a new heat sink molding structure to ensure smooth demoulding and reduce maintenance costs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an integrated heat sink molding structure for a die-casting mold, which has the characteristics of simple structure, low assembly difficulty, convenient maintenance for workers, and convenient product demoulding.

[0004] The technical solution adopted by the present invention to solve its technical problem is: to provide an integrated heat sink molding structure for a die-casting mold, including a lower mold base, a lower mold core and a mold cavity structure, wherein the lower mold core is embedded and installed in the middle of the upper end surface of the lower mold base, and an inwardly concave mold cavity structure is arranged in the middle of the upper end surface of the lower mold core, characterized in that: a heat sink molding insert whose lower end passes through the lower mold core and the lower mold base is embedded and installed in the middle of the mold cavity structure, and the heat sink molding insert includes a sheet body, a middle molding groove and a side molding groove, and the sheet body has a total of a plurality of sheets arranged vertically side by side, and each sheet At least one middle forming groove is arranged in the middle of the upper end surface of the sheet body, and side forming grooves are arranged between adjacent sheet bodies. An internal threaded hole is arranged in the lower end of the sheet body, and a threaded screw is vertically installed on the internal threaded hole. The lower end of the threaded screw is provided with a transversely arranged driving gear, and a driving rack meshing with the driving gear is arranged on the rear side of the driving gear. The driving rack drives all driving gears to rotate completely or gradually, and the driving rack drives the threaded screw to rotate, and the threaded screw drives the sheet body to move up and down through the internal threaded hole.

[0005] In the technical solution, a plurality of sheet bodies are provided to facilitate workers to assemble the heat sink molding insert. At the same time, an internal threaded hole and a threaded screw are provided at the lower end of the sheet body to facilitate the preliminary pre-ejection of the heat dissipation structure and the sheet body, thereby greatly reducing the clamping force between the heat dissipation structure and the heat sink molding insert, facilitating product demoulding, and also reducing the number of ejectors used, facilitating worker maintenance.

[0006] As a supplement to the present technical solution, guide protrusions are provided on the front and rear sides of the sheet body, and guide grooves matching the guide protrusions are provided at the positions of the lower mold base and the lower mold core for installing the heat sink molding inserts. In the present technical solution, guide protrusions and guide grooves are provided to facilitate the stable up and down movement of the sheet body. At the same time, the extreme positions of the upper side of the guide protrusions and the upper end of the guide grooves can limit the sheet body, which is convenient for guiding workers to install.

[0007] When installing the device, the worker first needs to calculate the protruding length of the threaded screw, and then rotate the threaded screw to make the protruding length of the threaded screw consistent with the length calculated in advance. After completion, the sheet body is installed from the installation port of the lower mold base, the guide protrusions and the guide grooves are matched, and at the same time, ensure that the sheet body is inserted into the lower mold core one by one.

[0008] As a supplement to the technical solution, a die foot structure is installed on the lower end surface of the lower die base, a driving cylinder is installed transversely in the die foot structure, and the main shaft of the driving cylinder is connected to the driving rack.

[0009] In the technical solution, the oil cylinder is driven to control the driving rack to move horizontally, and the driving rack is used to drive the driving gear. The driving gear controls the threaded screw to rotate, and the rotation of the threaded screw drives the sheet body to move up and down.

[0010] As a supplement to the present technical solution, the driving rack and the threaded screw are integrally formed. In order to ensure the structural strength between the driving rack and the threaded screw, an integrally formed part is selected to ensure the overall structural strength.

[0011] As a supplement to the present technical solution, a stabilizing platform is arranged below the heat sink molding insert, and a limiting cylindrical boss embedded in the stabilizing platform is arranged on the lower end surface of the driving gear. By setting up the stabilizing platform, the operation of the driving gear can be effectively stabilized to ensure that there is no jamming during operation.

[0012] A portion of the lower side of the drive rack is embedded in the stabilizing platform to ensure that the drive rack runs more stably and smoothly when horizontally.

[0013] As a supplement to the technical solution, a stabilizing bearing is sleeved and installed on the limiting cylindrical boss, and the stabilizing bearing is embedded and installed on the stabilizing platform. By installing the stabilizing bearing, the stable operation of the threaded screw can be guaranteed.

[0014] As a supplement to the present technical solution, a sealing sleeve is installed on the lower opening of the internal threaded hole, and the sealing sleeve is used to improve the sealing condition of the internal threaded hole, prevent dust from entering the inside, and ensure stable internal operation.

[0015] As a supplement to the present technical solution, a circle of ejector holes surrounding the heat sink molding insert is arranged on the outer ring of the mold cavity structure, an ejector plate that moves up and down is arranged below the lower mold base, a bottom plate is installed below the ejector plate, and a plurality of ejector structures corresponding to the ejector holes are installed on the ejector plate. The ejector plate is installed to push the ejector structure, thereby facilitating the demolding operation.

[0016] As a supplement to the present technical solution, the front and rear sides of the heat sink molding insert are provided with a plurality of oil filling ports corresponding to the internal threaded holes, and the front and rear sides of the lower mold base are provided with a plurality of oil filling port docking ports corresponding to the oil filling ports. By setting the oil filling ports and the oil filling port docking ports, it is convenient to dock the oil filling pipe and the internal threaded hole, and it is convenient for the insulation oil to enter the internal threaded hole to protect the thread.

[0017] As a supplement to the technical solution, the shape of the combination of the two butted side forming grooves is the same as that of the middle forming groove.

[0018] Beneficial effects: The present invention relates to an integrated heat sink molding structure for a die-casting mold, which is convenient for workers to assemble heat sink molding inserts by setting a plurality of sheet-like bodies, and at the same time, an internal threaded hole and a threaded screw are set at the lower end of the sheet-like body to facilitate the initial pre-ejection of the heat dissipation structure and the sheet-like body, thereby greatly reducing the clamping force between the heat dissipation structure and the heat sink molding insert, facilitating product demoulding, and also reducing the number of ejectors used, facilitating worker maintenance, and having the characteristics of simple structure, low assembly difficulty, convenient worker maintenance, and convenient product demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a top view of the present invention; Figure 2 The present invention Figure 1 Section view in the AA direction; Figure 3 The present invention Figure 2 A partial enlarged view of the middle part; Figure 4 The present invention Figure 2 A partial enlarged view of point B in the middle; Figure 5 is a front view of the heat sink forming insert of the present invention; Figure 6 is a left side view of the heat sink forming insert of the present invention; Figure 7 is a top view of the heat sink forming insert of the present invention; Figure 8 is a schematic diagram of the operating state of the heat sink molding insert of the present invention when it is in overall operation; Fig. 9 It is a schematic diagram of the structure of the driving rack when only one section of teeth is left on the driving rack of the present invention; Fig.10 The present invention Fig. 9 A partial enlarged view of point C in the middle; Fig.11 It is a schematic diagram of the operating state of the heat sink forming insert when only a section of teeth is left on the driving rack of the present invention; Fig.12 This is a structural view of the guide groove of the present invention; Fig.13 It is a structural view of the oil filling port docking port described in the present invention.

[0020] Illustration: 1. Lower die base, 2. Lower die core, 3. Cavity structure, 4. Heat sink molding insert, 5. Ejector hole, 6. Sheet body, 7. Middle molding groove, 8. Side molding groove, 9. Threaded screw, 10. Driving gear, 11. Stabilizing platform, 12. Driving cylinder, 13. Driving rack, 14. Internal threaded hole, 15. Sealing sleeve, 16. Limiting cylindrical boss, 17. Guide protrusion, 18. Oil filling port, 19. Guide groove, 20. Die foot structure, 21. Ejector plate, 22. Bottom plate, 23. Oil filling port docking port, 24. Stabilizing bearing. DETAILED DESCRIPTION

[0021] 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.

[0022] An embodiment of the present invention relates to an integrated heat sink molding structure for a die casting mold, such as Figure 1As shown in FIG. 7 , the heat sink 1 comprises a lower mold base 1, a lower mold core 2 and a mold cavity structure 3. The lower mold core 2 is embedded in the middle of the upper end surface of the lower mold base 1. The lower mold core 2 is provided with a concave mold cavity structure 3 in the middle of the upper end surface. A heat sink forming insert 4 is embedded in the middle of the mold cavity structure 3, and the lower end passes through the lower mold core 2 and the lower mold base 1. The heat sink forming insert 4 comprises a sheet body 6, a middle forming groove 7 and a side forming groove 8. The sheet body 6 has a total of several sheets arranged vertically side by side. Each sheet body 6 is provided with at least one middle forming groove 7 in the middle of the upper end surface. Adjacent sheets are provided with a plurality of middle forming grooves 7. A side forming groove 8 is provided between the sheet-like bodies 6, an internal threaded hole 14 is provided in the lower end of the sheet-like body 6, a threaded screw 9 is vertically installed on the internal threaded hole 14, and a transversely arranged driving gear 10 is provided at the lower end of the threaded screw 9. A driving rack 13 meshing with the driving gear 10 is provided on the rear side of the driving gear 10, and the driving rack 13 drives all the driving gears 10 to rotate completely or gradually, and the driving rack 13 drives the threaded screw 9 to rotate, and the threaded screw 9 drives the sheet-like body 6 to move up and down through the internal threaded hole 14.

[0023] In the present technical solution, a plurality of sheet bodies 6 are provided to facilitate workers to assemble the heat sink molding insert 4. At the same time, an internal threaded hole 14 and a threaded screw 9 are provided at the lower end of the sheet body 6 to facilitate the preliminary pre-ejection of the heat dissipation structure and the sheet body 6, thereby greatly reducing the clamping force between the heat dissipation structure and the heat sink molding insert 4, facilitating product demoulding, and also reducing the number of ejectors used, facilitating worker maintenance.

[0024] As a supplement to the present technical solution, the front and rear sides of the sheet body 6 are both provided with guide protrusions 17, and the lower mold base 1 and the lower mold core 2 are provided with guide grooves 19 matching the guide protrusions 17 at the positions where the heat sink molding inserts 4 are installed. In the present technical solution, the guide protrusions 17 and the guide grooves 19 are provided to facilitate the stable up and down movement of the sheet body 6. At the same time, the upper side of the guide protrusion 17 and the upper end of the guide groove 19 can limit the sheet body 6, which is convenient for guiding workers to install.

[0025] When installing the device, the worker first needs to calculate the protruding length of the threaded screw 9, and then rotate the threaded screw 9 to make the protruding length of the threaded screw 9 consistent with the length calculated in advance. After completion, the sheet body 6 is installed from the installation port of the lower mold base 1, and the guide protrusion 17 and the guide groove 19 are matched, while ensuring that the sheet body 6 is inserted into the lower mold core 2 one by one.

[0026] As a supplement to the present technical solution, a die foot structure 20 is installed on the lower end surface of the lower die base 1, and a driving cylinder 12 is transversely installed in the die foot structure 20, and the main shaft of the driving cylinder 12 is connected to the driving rack 13.

[0027] In the present technical solution, the oil cylinder 12 is driven to control the driving rack 13 to move horizontally, and the driving rack 13 is used to drive the driving gear 10, and the driving gear 10 controls the threaded screw 9 to rotate, and the rotation of the threaded screw 9 drives the sheet body 6 to move up and down.

[0028] As a supplement to the present technical solution, the driving rack 13 and the threaded screw 9 are integrally formed. In order to ensure the structural strength between the driving rack 13 and the threaded screw 9, an integrally formed part is selected to ensure the overall structural strength.

[0029] As a supplement to the present technical solution, a stabilizing platform 11 is arranged below the heat sink molding insert 4, and a limiting cylindrical boss 16 embedded in the stabilizing platform 11 is arranged on the lower end face of the driving gear 10. By setting the stabilizing platform 11, the operation of the driving gear 10 can be effectively stabilized to ensure that there is no jamming during operation.

[0030] A portion of the lower side of the driving rack 13 is embedded in the stabilizing platform 11 to ensure that the driving rack 13 is more stable and smooth when running horizontally.

[0031] As a supplement to the present technical solution, a stabilizing bearing 24 is sleeved and installed on the limiting cylindrical boss 16 , and the stabilizing bearing 24 is embedded and installed on the stabilizing platform 11 . By installing the stabilizing bearing 24 , the threaded screw 9 can be guaranteed to run stably.

[0032] As a supplement to the present technical solution, a plugging sleeve 15 is installed on the lower opening of the internal threaded hole 14, and the plugging sleeve 15 is used to improve the sealing condition of the internal threaded hole 14, prevent dust from entering the inside, and ensure stable internal operation.

[0033] As a supplement to the present technical solution, a circle of ejector holes 5 surrounding the heat sink molding insert 4 is provided on the outer ring of the mold cavity structure 3, an ejector plate 21 that moves up and down is provided below the lower mold base 1, a bottom plate 22 is installed below the ejector plate 21, and a plurality of ejector structures corresponding to the ejector holes 5 are installed on the ejector plate 21. The ejector plate 21 is installed to push the ejector structure, thereby facilitating the demolding operation.

[0034] As a supplement to the present technical solution, the front and rear sides of the heat sink molding insert 4 are provided with a plurality of oil filling ports 18 corresponding one-to-one to the internal threaded holes 14, and the front and rear sides of the lower mold base 1 are provided with a plurality of oil filling port docking ports 23 corresponding one-to-one to the oil filling ports 18. By providing the oil filling ports 18 and the oil filling port docking ports 23, it is convenient to dock the oil filling pipe and the internal threaded hole 14, and it is convenient for the insulation oil to enter the internal threaded hole 14 to protect the thread.

[0035] As a supplement to the present technical solution, the combined shape of the two butted side forming grooves 8 is the same as that of the middle forming groove 7 . Example

[0036] When the present technical solution is used for demoulding, the product has been formed and cooled in the mold. Then the entire mold is opened, and each core pulling has completed the disengagement action. Then the driving cylinder 12 is started, and the main shaft of the driving cylinder 12 controls the driving rack 13 to extend. The driving rack 13 drives the driving gear 10 to rotate through the teeth above. The driving gear 10 rotates and drives the threaded screw 9. The threaded screw 9 moves the sheet body 6 downward through the external thread and the internal thread hole 14. At this time, the sheet body 6 and the product are demoulded, so that the clamping force between the heat dissipation structure and the heat sink molding insert 4 is opened. Finally, as shown in FIG. Fig.12 As shown, the product is completely ejected from the mold cavity structure 3 by the ejector plate 21 and the ejector structure. After completion, the driving cylinder 12 is reset, and the mold is closed again for the next production.

[0037] The advantage of this technical solution is that a large number of ejector pins are omitted, which avoids the tedious replacement work when the ejector pins are damaged, greatly reduces the maintenance difficulty and maintenance cost, and facilitates rapid demoulding and realizes rapid ejection of products. Example

[0038] In the actual production process, the driving rack 13 has two states, one of which is as follows: Figure 8 As shown, it is mainly used in the production of small cylinder bodies, and when the sheet body 6 has only one central molding groove 7, the driving rack 13 and the driving gear 10 meshing on one side both have a tooth structure. When the driving rack 13 is running, it drives all the driving gears 10 to rotate, so that all the sheet bodies 6 move up or down. This method can greatly speed up the demoulding efficiency.

[0039] Another state such as Figure 9-11As shown, there is only one section of tooth structure on the driving rack 13. When the driving rack 13 is running, this section of tooth structure can only drive one sheet body 6, so that when the driving rack 13 is running, the sheet bodies 6 can move up or down one by one. This method is suitable for die-casting molds that produce large cylinder bodies. The sheet body 6 can be moved independently, so that the resistance borne by the driving rack 13 and the driving gear 10 is greatly reduced, ensuring that the service life of the driving rack 13 and the driving gear 10 is increased. Example

[0040] In the actual use of the device, the working environment of the die-casting mold needs to be considered. The die-casting mold is produced in a high-pressure and high-temperature environment. Therefore, in order to avoid rapid aging of the thread structure in the internal threaded hole 14, it is necessary to inject insulation oil into the internal threaded hole 14 to prevent high temperature from affecting the internal threaded hole 14. Fig.13 As shown, the oil filling port 18 on the front side of the heat sink molding insert 4 is the inlet, and the one on the rear side is the outlet. During the die-casting process, the insulation oil is continuously input through the inlet and outlet so that the temperature of the internal threaded hole 14 is always maintained at about 200 degrees Celsius, thereby preventing the internal thread from being damaged by high temperature and increasing the service life of the part.

Claims

1. An integrated heat sink molding structure for a die-casting mold, comprising a lower mold base (1), a lower mold core (2) and a mold cavity structure (3), wherein the lower mold base (1) is embedded with the lower mold core (2) in the middle of the upper end surface, and the lower mold core (2) is provided with an inwardly concave mold cavity structure (3) in the middle of the upper end surface, characterized in that: The mold cavity structure (3) has a heat sink molding insert (4) embedded in the middle of the mold cavity structure (3), the lower end of which passes through the lower mold core (2) and the lower mold base (1). The heat sink molding insert (4) includes a sheet body (6), a middle molding groove (7) and a side molding groove (8). The sheet body (6) has a total of several sheets arranged vertically side by side. Each sheet body (6) has at least one middle molding groove (7) in the middle of the upper end surface, and side molding grooves (8) are provided between adjacent sheet bodies (6). The lower end of the sheet body (6) is provided with an inner screw. The inner threaded hole (14) is vertically mounted with a threaded screw (9), the lower end of each threaded screw (9) is provided with a transversely arranged driving gear (10), the rear side of each driving gear (10) is provided with a driving rack (13) meshing with the driving gear (10), the driving rack (13) drives all driving gears (10) to rotate completely or gradually, the driving rack (13) drives the threaded screw (9) to rotate, and the threaded screw (9) drives the sheet body (6) to move up and down through the inner threaded hole (14).

2. The integrated heat sink forming structure for a die-casting mold according to claim 1, characterized in that: The front and rear sides of the sheet-like body (6) are both provided with guide protrusions (17), and the lower mold base (1) and the lower mold core (2) are provided with guide grooves (19) matching the guide protrusions (17) at the positions where the heat sink molding insert (4) is installed.

3. The integrated heat sink forming structure for a die-casting mold according to claim 1, characterized in that: A die foot structure (20) is installed on the lower end surface of the lower die base (1), a driving cylinder (12) is installed transversely in the die foot structure (20), and a main shaft of the driving cylinder (12) is connected to a driving rack (13).

4. The integrated heat sink forming structure for a die-casting mold according to claim 3, characterized in that: The driving rack (13) and the threaded screw (9) are integrally formed.

5. The integrated heat sink forming structure for a die-casting mold according to claim 3, characterized in that: A stabilizing platform (11) is provided below the heat sink molding insert (4), and a limiting cylindrical boss (16) embedded in the stabilizing platform (11) is provided on the lower end surface of the driving gear (10).

6. The integrated heat sink forming structure for a die-casting mold according to claim 5, characterized in that: A stabilizing bearing (24) is sleeved and mounted on the limiting cylindrical boss (16), and the stabilizing bearing (24) is embedded and mounted on the stabilizing platform (11).

7. The integrated heat sink forming structure for a die-casting mold according to claim 1, characterized in that: A sealing sleeve (15) is installed on the lower opening of the internal threaded hole (14).

8. The integrated heat sink forming structure for a die-casting mold according to claim 1, characterized in that: The outer ring of the mold cavity structure (3) is provided with a circle of ejector holes (5) surrounding the heat sink molding insert (4); an ejector plate (21) that moves up and down is provided below the lower mold base (1); a bottom plate (22) is installed below the ejector plate (21); and a plurality of ejector structures corresponding to the ejector holes (5) are installed on the ejector plate (21).

9. The integrated heat sink forming structure for a die-casting mold according to claim 1, characterized in that: The front and rear sides of the heat sink molding insert (4) are both provided with a plurality of oil filling ports (18) corresponding one-to-one to the internal threaded holes (14), and the front and rear sides of the lower mold base (1) are both provided with a plurality of oil filling port docking ports (23) corresponding one-to-one to the oil filling ports (18).

10. The integrated heat sink forming structure for a die casting mold according to claim 1, characterized in that: The combined shape of the two butted side forming grooves (8) is the same as that of the middle forming groove (7).

Images