CN221184651U - Full core-pulling die-casting die for die-casting brake cover - Google Patents
Full core-pulling die-casting die for die-casting brake cover Download PDFInfo
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- CN221184651U CN221184651U CN202322955336.0U CN202322955336U CN221184651U CN 221184651 U CN221184651 U CN 221184651U CN 202322955336 U CN202322955336 U CN 202322955336U CN 221184651 U CN221184651 U CN 221184651U
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- 238000004512 die casting Methods 0.000 title claims abstract description 42
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 15
- 238000005553 drilling Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Abstract
The full core-pulling die-casting die for the die-casting brake cover comprises a movable die and a fixed die, wherein a die cavity is formed in the joint box surface of the movable die and the fixed die, a core-pulling box is arranged on the movable die, the front end of the core-pulling box stretches into the die cavity, and a guide hole is formed in the front end of the core-pulling box; the fixed die is provided with a through hole for inserting the core pulling rod into the cavity, and the axial lead of the through hole is coaxial with the axial lead of the guide hole of the core pulling box; the installation support is arranged on the fixed die, the installation support is fixedly connected with the driving device, a driving rod of the driving device is connected with a core pulling rod for forming a mounting hole of the speed meter, the core pulling rod is a stepped shaft rod and comprises a sealing section, a forming section and a guiding section, the sealing section is a large-diameter section and is positioned at the rear end of the core pulling rod, the guiding section is a conical section and is positioned at the front end of the core pulling rod, the forming section is positioned between the sealing section and the guiding section, the guiding hole on the core pulling box is a conical hole, the guiding section for the core pulling rod is inserted, and the diameter of the sealing section is matched with the aperture of the through hole on the fixed die.
Description
Technical Field
The utility model relates to a die-casting die, in particular to a full core-pulling die-casting die for die-casting a brake cover.
Background
In the existing motorcycle brake industry, a brake cover of a front brake system is usually molded by using a die casting die, and the molded speedometer mounting hole has high requirements on position accuracy. Because the mounting hole of the speed meter is a stepped hole, manual drilling and reaming processing are needed to be carried out subsequently, and the clamping of the brake cover is difficult during drilling and reaming, errors are easy to generate, so that the assembly precision of the speed meter is reduced, the speed meter precision of a motorcycle is low, the satisfaction degree of a customer to a brake is reduced, and the drilling and reaming processing lead the manufacturing cost of a product to be larger.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide a full core-pulling die-casting die for die-casting a brake cover, which can be used for forming a speedometer mounting hole in one step while die-casting the brake cover, so that the accuracy of the speedometer mounting hole is improved, the processing procedures are reduced, and the labor cost is reduced.
The purpose of the utility model is realized in the following way: the full core-pulling die-casting die for the die-casting brake cover comprises a movable die and a fixed die, wherein a die cavity is formed in the joint box surface of the movable die and the fixed die, a core-pulling box is arranged on the movable die, the front end of the core-pulling box stretches into the die cavity, and a guide hole is formed in the front end of the core-pulling box; the fixed die is provided with a through hole for inserting the core pulling rod into the die cavity, and the axial lead of the through hole is coaxial with the axial lead of the guide hole on the core pulling box; the installation support is arranged on the fixed die, the installation support is fixedly connected with a driving device, a driving rod of the driving device is connected with a core pulling rod used for forming a mounting hole of the speed meter, the core pulling rod is a stepped shaft rod and comprises a sealing section, a forming section and a guiding section, the sealing section is a large-diameter section and is positioned at the rear end of the core pulling rod, the guiding section is a conical section and is positioned at the front end of the core pulling rod, the forming section is positioned between the sealing section and the guiding section, the guiding hole on the core pulling box is a conical hole, the guiding section of the core pulling rod is inserted, and the diameter of the sealing section is identical with the aperture of the through hole on the fixed die.
The movable die is provided with a core-pulling box assembly groove, and the rear end of the core-pulling box is inserted into the assembly groove and fixed with the movable die through bolts.
The axial lead of the through hole on the fixed die forms an included angle of 8 degrees with the die clamping surface, the upper end surface of the guide hole of the core pulling box on the movable die is an inclined surface and is parallel to the lower end surface of the through hole of the fixed die, into which the core pulling rod is inserted into the die cavity.
The mounting bracket is in an inverted L shape, and a vertical arm of the mounting bracket is fixed with the fixed die through a bolt; the cross arm of the mounting bracket is provided with a through hole for the driving rod to pass through.
The rear end of the core pulling rod is provided with a limit flange, a connecting plate is provided with a stepped through hole, the core pulling rod penetrates through a small-diameter section of the stepped through hole, the limit flange is located in a large-diameter section of the stepped through hole to form limit, and the connecting plate is fixedly connected with a fixing plate arranged on the driving rod through a bolt to connect the core pulling rod with the driving rod.
The fixed plate is fixedly connected with the driving rod through bolts.
And a limiting block is arranged on the mounting bracket and used for limiting return of the core pulling rod.
The shaping section of the loose core rod is a stepped section.
The driving device is a hydraulic cylinder or an air cylinder.
The core pulling rod on the fixed die and the core pulling box on the movable die can be replaced according to the requirements of customers.
The brake cover manufactured by the full core-pulling die-casting die for die-casting the brake cover is formed at one time, so that the position accuracy and consistency of the counter holes are ensured, the speed counting accuracy of the motorcycle is improved, the product quality is improved, the processing difficulty is reduced, the processing cost of drilling and reaming is reduced, and the labor cost is further reduced; because the core-pulling box of the movable die and the core-pulling rod of the fixed die can be replaced, the die cost is reduced.
Further description will be made with reference to the drawings and the detailed description.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Description of the embodiments
Referring to fig. 1, a full core-pulling die casting mold of a die casting brake cover comprises a movable mold 2, a fixed mold 1, wherein mold cavities are formed on the mold closing surfaces of the movable mold 2 and the fixed mold 1, an assembly groove of a core-pulling box 3 is formed in the movable mold 2, the front end of the core-pulling box 3 stretches into the mold cavity, a guide hole 3a is formed in the front end of the core-pulling box, and the rear end of the core-pulling box 3 is inserted into the assembly groove and is fixedly connected with the movable mold 2 through a bolt; the fixed die 1 is provided with a through hole 10 for inserting a core pulling rod 4 into a cavity, the axial lead of the through hole 10 is coaxial with the axial lead of a guide hole 3a on the core pulling box 3, the axial lead of the through hole 10 forms an included angle of 8 degrees with a die clamping surface, the core pulling rod 4 is a stepped shaft rod and comprises a sealing section 4c, a forming section 4b and a guide section 4a, the sealing section is a large-diameter section and is positioned at the rear end of the core pulling rod 4, the guide section 4a is a conical section and is positioned at the front end of the core pulling rod 4, the forming section 4b is positioned between the sealing section 4c and the guide section 4a, the forming section 4b is a stepped section and is used for forming a mounting hole of a speed counter, and the diameter of the sealing section 4c is matched with the aperture of the through hole 10 on the fixed die 1; the upper end surface of a guide hole 3a of the upper core pulling box 3 of the movable die 2 is an inclined surface and is parallel to the lower end surface of a through hole 10 of the fixed die 1, into which the core pulling rod 4 is inserted into the cavity; the guide hole 3a on the core-pulling box 3 is a conical hole for inserting the guide section 4a of the core-pulling rod 4; the mounting bracket 8 is arranged on the fixed die 1, the mounting bracket 8 is in an inverted L shape, and a flange is arranged below a vertical arm of the mounting bracket 8 and is fixed with the fixed die 1 through a bolt; the cross arm of the mounting bracket 8 is fixed with a driving device 9 through a bolt, and the cross arm of the mounting bracket 8 is provided with a through hole for the driving rod 9c to pass through; the mounting bracket 8 is fixedly connected with a driving device 9, the driving device 9 adopts a hydraulic oil cylinder, a piston rod of the hydraulic oil cylinder is a driving rod 9c, the driving rod 9c is connected with a core pulling rod 4 for forming a mounting hole of the speed meter, the rear end of the core pulling rod 4 is provided with a limit flange, a connecting plate 5 is provided with a step through hole, the core pulling rod 4 passes through a small diameter section of the step through hole, the limit flange is positioned in a large diameter section of the step through hole to form limit, the connecting plate 5 is fixedly connected with a fixed plate 6 arranged on the driving rod 9c through a bolt, and the fixed plate 6 is fixedly connected with the driving rod 9c through a bolt; the mounting bracket 8 is provided with a limiting block 7, and the limiting block 7 is positioned between the mounting bracket 8 and the fixed plate 6 and is used for limiting the return of the core-pulling rod 4.
Before die-casting machine is closed, oil is supplied to oil outlet 9b of oil cylinder 9 through the oil pipe mode, the oil cylinder drives cylinder rod 9c to move upwards through the piston mode, cylinder rod 9c drives fixed plate 6 to move upwards, limit block 7 is moved to limit, and then die-casting is waited.
When the die is assembled, after the movable die 2 and the fixed die 1 are assembled in place, the die casting machine supplies oil to the oil inlet hole 9a of the oil cylinder 9 in an oil pipe mode, the oil cylinder drives the cylinder rod 9c to move downwards in a piston mode, and the cylinder rod 9c drives the fixed plate 6 to move downwards. Because the core rod 4 is connected to the connecting plate 5 and the fixing plate 6. The fixing plate 6 pushes the pumping rod 4 downward. The core pulling rod 4 moves downwards until the guide section 4a of the core pulling rod 4 is completely matched with the guide hole 3a of the core pulling box 3. The guide section 4a of the core pulling rod 4 is matched with the guide hole 3a of the core pulling box 3, and the taper fit has the advantages of good coaxiality, no clearance in fit and limit requirement. Thereby completing the die assembly and then performing die casting molding.
When the die is opened, the die casting machine supplies oil to the oil outlet 9b of the oil cylinder 9 in an oil pipe mode, the oil cylinder drives the cylinder rod 9c to move upwards in a piston mode, the cylinder rod 9c drives the fixed plate 6 to move upwards, and the fixed plate moves to the limiting block 7 to limit, because the core drawing rod 4 is connected with the connecting plate 5 and the fixed plate 6. The connection plate 5 pulls the core rod 4 to move upward, and the guide section 4a of the core rod 4 and the guide hole 3a of the core box 3 are correspondingly pulled apart. So that the product on the fixed die can be demolded without interference. And after the movable die 2 and the fixed die 1 are opened in place, taking out the product.
The subsequent production can circulate the steps, so that the production process is compact in rhythm, and other production delays are avoided.
Instead of the hydraulic cylinder being used as the driving means in the above embodiment, a cylinder may be used as the driving means.
Claims (9)
1. The utility model provides a die casting braking lid's die casting die entirely loose core, includes movable mould (2), cover half (1), and the joint box face of movable mould (2), cover half (1) sets up die cavity, its characterized in that: a core pulling box (3) is arranged on the movable mould (2), the front end of the core pulling box (3) stretches into the cavity, and a guide hole (3 a) is formed in the front end of the core pulling box; a through hole (10) for inserting the core pulling rod (4) into the cavity is formed in the fixed die (1), and the axial lead of the through hole (10) is coaxial with the axial lead of the guide hole (3 a) on the core pulling box (3); the mounting support (8) is arranged on the fixed die (1), the mounting support (8) is fixedly connected with a driving device (9), a driving rod of the driving device (9) is connected with a core pulling rod (4) used for forming a mounting hole of the speed meter, the core pulling rod (4) is a stepped shaft rod and comprises a sealing section (4 c), a forming section (4 b) and a guiding section (4 a), the sealing section is a large-diameter section and is positioned at the rear end of the core pulling rod (4), the guiding section (4 a) is a conical section and is positioned at the front end of the core pulling rod (4), the forming section is positioned between the sealing section (4 c) and the guiding section (4 a), the guiding hole (3 a) on the core pulling box (3) is a conical hole, and the guiding section (4 a) of the core pulling rod (4) is inserted, and the diameter of the sealing section (4 c) is matched with the aperture of the through hole (10) on the fixed die (1).
2. The full core-pulling die casting die for die casting a brake cover according to claim 1, wherein: the movable die (2) is provided with a loose core box (3) assembly groove, and the rear end of the loose core box (3) is inserted into the assembly groove and fixed with the movable die (2) through bolts.
3. The full core-pulling die casting die for die casting a brake cover according to claim 1, wherein: the axial lead of the through hole (10) on the fixed die (1) forms an included angle of 8 degrees with the die clamping surface, the upper end surface of the guide hole (3 a) of the upper core pulling box (3) of the movable die (2) is an inclined surface and is parallel to the lower end surface of the through hole (10) of the fixed die (1) for inserting the core pulling rod (4) into the die cavity.
4. The full core-pulling die casting die for die casting a brake cover according to claim 1, wherein: the mounting bracket (8) is in an inverted L shape, and a vertical arm of the mounting bracket (8) is fixed with the fixed die (1) through a bolt; the cross arm of the mounting bracket (8) is fixed with a driving device (9) through a bolt, and the cross arm of the mounting bracket (8) is provided with a through hole for a driving rod to pass through.
5. The full core-pulling die casting die for die casting a brake cover according to claim 1, wherein: the rear end of the core pulling rod (4) is provided with a limit flange, a connecting plate (5) is provided with a stepped through hole, the core pulling rod (4) penetrates through a small-diameter section of the stepped through hole, the limit flange is located in a large-diameter section of the stepped through hole to form limit, and the connecting plate (5) is fixedly connected with a fixing plate (6) arranged on the driving rod through bolts, so that the core pulling rod (4) is connected with the driving rod.
6. The full core-pulling die casting die for die casting a brake cover according to claim 5, wherein: the fixing plate (6) is fixedly connected with the driving rod through bolts.
7. The full core-pulling die casting die for die casting a brake cover according to claim 1, wherein: and a limiting block (7) is arranged on the mounting bracket (8) and used for limiting return of the core pulling rod (4).
8. The full core-pulling die casting die for die casting a brake cover according to claim 1, wherein: the forming section (4 b) of the core pulling rod (4) is a stepped section.
9. The full core-pulling die casting die for die casting a brake cover according to claim 1, wherein: the driving device (9) is a hydraulic cylinder or an air cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322955336.0U CN221184651U (en) | 2023-11-02 | 2023-11-02 | Full core-pulling die-casting die for die-casting brake cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322955336.0U CN221184651U (en) | 2023-11-02 | 2023-11-02 | Full core-pulling die-casting die for die-casting brake cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221184651U true CN221184651U (en) | 2024-06-21 |
Family
ID=91488829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322955336.0U Active CN221184651U (en) | 2023-11-02 | 2023-11-02 | Full core-pulling die-casting die for die-casting brake cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221184651U (en) |
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2023
- 2023-11-02 CN CN202322955336.0U patent/CN221184651U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |