CN112247107B - Die casting method for product with inclined opening cavity - Google Patents
Die casting method for product with inclined opening cavity Download PDFInfo
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- CN112247107B CN112247107B CN202011133224.1A CN202011133224A CN112247107B CN 112247107 B CN112247107 B CN 112247107B CN 202011133224 A CN202011133224 A CN 202011133224A CN 112247107 B CN112247107 B CN 112247107B
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- sliding block
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2236—Equipment for loosening or ejecting castings from dies
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- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a die-casting method of a product with an inclined opening cavity, which comprises the following steps: setting a mould, wherein the mould is provided with a slide block which slides along a curve, a core at the front end of the slide block extends into a cavity after mould closing, then injecting molten metal to form a workpiece, then opening the mould, sliding the slide block along a linear direction to enable the core to leave the workpiece, then continuing to slide outwards, overturning the front end of the slide block until a demoulding path of the workpiece is yielded, and finally demoulding the workpiece. The invention has the beneficial effects that: the method is suitable for forming the workpiece with the lateral deep hole/cavity, the moving direction of the sliding block is changed, the sufficient moving distance of the sliding block is guaranteed, the core can be smoothly pulled, the space is not excessively occupied, and the problems that the sliding mechanism possibly interferes with a die plate of a die casting machine and the conventional method is difficult to form due to the fact that the sliding block is too long in core pulling and excessively large in space required by the movement of the sliding block when the conventional sliding block mechanism is used for forming can be avoided.
Description
Technical Field
The invention belongs to the technical field of casting, and particularly relates to a die-casting method for a product with an inclined opening cavity.
Background
The sliding block mechanism on the high-pressure die-casting die is a common structure, and the front end of the sliding block is provided with a molded surface or a movable core for forming a hole or a cavity on a product. The moving direction of the sliding block is vertical to the direction of the die opening and closing and the sliding block moves linearly, so that the sliding block can be conveniently separated after die separation, and the mechanism is called a lateral sliding block mechanism. By using the lateral sliding block mechanism, a hole or a cavity with an opening direction different from the mold opening and closing direction can be formed on a product, so that a formed product is directly obtained, and the subsequent machining of the formed hole or cavity is avoided. However, for some products with complex structures, the design of the sliding block adopting the conventional motion mode cannot be satisfied, and the reasons are that: firstly, the product structure, such as deep holes, deep reinforcing ribs and the die drawing direction, requires that the motion direction of a slide block cannot be vertical to a die parting surface; secondly, because the deep cavity and the deep hole of the product are too deep, the movement stroke of the sliding block is too long, and if the sliding block moves along a straight line, the sliding block mechanism can interfere with a die plate of a die casting machine. For this situation, a product cannot be molded using a general slider design.
Disclosure of Invention
In view of the above, the present invention provides a die casting method for a product having a cavity with an inclined opening.
The technical scheme is as follows:
a die casting method for a product with an oblique opening cavity is characterized by comprising the following steps:
step one, setting a mould: the die comprises a fixed die assembly and a movable die assembly, a cavity is arranged between the fixed die assembly and the movable die assembly, a sliding block mechanism is arranged on the movable die assembly and comprises a linear driving mechanism, a sliding block seat and a sliding block, a sliding block channel for the sliding block to enter and exit is arranged between the fixed die assembly and the movable die assembly, the linear driving mechanism is positioned outside the sliding block channel, the linear driving mechanism is hinged with the sliding block seat, the sliding block seat is fixedly connected with the sliding block, and a die core is arranged at the front end of the sliding block;
a curve sliding mechanism is arranged between the sliding block seat and the movable die assembly, and comprises a curve sliding rail and a sliding block in sliding fit with the curve sliding rail;
the curve slide rail comprises a straight core-pulling section and a curve turning section which are connected in sequence and are connected in a smooth transition way;
step two, closing the mold, wherein the mold core extends into the cavity;
injecting molten metal, and cooling and solidifying the molten metal to form a workpiece;
step four, opening the mold: the movable mold component and the sliding block mechanism leave the fixed mold component;
step five, core pulling: the linear driving mechanism drives the sliding block seat and the sliding block to gradually slide outwards, the sliding block firstly slides along the direction of the linear core pulling section to enable the core to leave the workpiece, then the sliding block continuously slides outwards, and the front end of the sliding block overturns towards the fixed die assembly until a demoulding path of the workpiece is made;
and step six, demolding the workpiece.
The method has the advantages that the method is very suitable for forming the workpiece with the lateral deep hole/cavity, the moving direction of the sliding block is changed, the sufficient moving distance of the sliding block is ensured, the core can be smoothly pulled, the space is not excessively occupied, and the problems that the sliding block is excessively pulled to form the core when a conventional sliding block mechanism is used for forming, the space required by the movement of the sliding block is excessively large, the sliding mechanism possibly interferes with a die plate of a die casting machine, and the forming is difficult in the conventional method can be solved.
As a preferred technical scheme, two guide seats are fixedly arranged on the movable die assembly, the two guide seats are respectively located on two sides of the sliding block seat, the curved sliding mechanisms are respectively arranged between each guide seat and the sliding block seat, the two curved sliding mechanisms are opposite in parallel, and in the fifth step, the sliding block seat synchronously slides relative to the two guide seats.
By adopting the method, the sliding stability of the sliding block seat is improved.
As a preferred technical scheme, the curved slide rails are respectively arranged on each guide seat, and the slide blocks are respectively arranged on the slide block seats corresponding to the two curved slide rails;
one end of the linear core-pulling section is close to the cavity, the other end of the linear core-pulling section extends towards the fixed die assembly and deflects towards the direction of the linear driving mechanism, and the curve turning section is positioned on one side, far away from the fixed die assembly, of the linear core-pulling section;
in the fifth step, the sliding block firstly slides along the linear core pulling section and then slides along the curve turning section.
As a preferred technical scheme, two curved sliding mechanisms, namely a first curved sliding mechanism and a second curved sliding mechanism, are respectively arranged between each guide seat and each slider seat;
the first curve sliding mechanism comprises a first curve sliding rail and a first sliding block, and the second curve sliding mechanism comprises a second curve sliding rail and a second sliding block;
the two first curved slide rails and the two second curved slide rails are respectively and oppositely arranged in parallel, and the first sliding block and the second sliding block are respectively and fixedly connected to the sliding block seat corresponding to the first curved slide rails and the second curved slide rails;
the first curve slide rail and the second curve slide rail on the same guide seat are positioned in the same plane, the plane is parallel to the die opening and closing direction of the fixed die assembly and the movable die assembly, and the first curve slide rail is closer to the fixed die assembly than the second curve slide rail;
the straight core pulling section of the first curve slide rail and the straight core pulling section of the second curve slide rail are parallel to each other, the curve turning section of the first curve slide rail extends to the straight line driving mechanism in a straight line mode, and the curve turning section of the second curve slide rail deflects towards the direction far away from the fixed die assembly when extending to the straight line driving mechanism.
By adopting the method, the sliding stability of the sliding block seat is improved by the two sliding rails with different tracks, and the movement posture of the sliding block seat is convenient to control.
And in the sixth step, the ejector rod mechanism pushes the workpiece to demould the workpiece.
By adopting the method, statistical demolding is facilitated.
The invention has the beneficial effects that: the method is suitable for forming the workpiece with the lateral deep hole/cavity, the moving direction of the sliding block is changed, the sufficient moving distance of the sliding block is guaranteed, the core can be smoothly pulled, the space is not excessively occupied, and the problems that the sliding mechanism possibly interferes with a die plate of a die casting machine and the conventional method is difficult to form due to the fact that the sliding block is too long in core pulling and excessively large in space required by the movement of the sliding block when the conventional sliding block mechanism is used for forming can be avoided.
Drawings
FIG. 1 is a schematic view of a product having an oblique hole and a slider moving direction in demolding;
FIG. 2 is a schematic diagram of interference between a slider and a mold frame during core pulling along a straight line in the prior art in a limited space;
FIG. 3 is a schematic structural view of a mold according to the first embodiment;
FIG. 4 is a schematic view of a first perspective of the slider mechanism mounted on the movable mold;
FIG. 5 is a schematic view of the slider mechanism mounted on the movable mold from a second perspective;
FIG. 6 is a schematic structural view of a curvilinear sliding mechanism;
FIG. 7 is a schematic structural view of a molded product in an open mold state;
FIG. 8 is a schematic view of the slide linearly backing up to the core exiting the workpiece;
fig. 9 is a schematic view of the slider fully slid out.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Example one
As shown in fig. 1, the mold opening and closing direction of one product is D direction, and the mold ejection direction of the general slide is S1. However, the product is provided with a lateral hole a1, the lateral hole a1 is not perpendicular to the mold opening and closing direction D of the mold, and the mold stripping direction of the slider for molding the lateral hole a1 is S2. If a conventional slide sliding linearly is adopted, the deeper lateral hole a1 causes the slide core to slide a longer distance, but is limited by the installation space, and the situation that the slide mechanism interferes with the die frame of the die casting machine as shown in fig. 2 may occur. Accordingly, there is a need for improved mold designs.
As shown in fig. 3, a curved sliding block structure includes a fixed die assembly 1 and a movable die assembly 2, a cavity 9 is provided between the fixed die assembly 1 and the movable die assembly 2, a sliding block mechanism is provided on the movable die assembly 2, the sliding block mechanism includes a linear driving mechanism 3, a sliding block seat 7 and a sliding block 8, a sliding block passage for the sliding block 8 to go in and out is provided between the fixed die assembly 1 and the movable die assembly 2, the linear driving mechanism 3 is located outside the sliding block passage, the linear driving mechanism 3 is hinged to the sliding block seat 7, and the sliding block seat 7 is fixedly connected to the sliding block 8. The front end of the slide block 8 is provided with a core 8 a.
The linear drive mechanism 3 may be a cylinder. The slider seat 7 is provided with a bearing cavity, a bearing 73 is arranged in the bearing cavity, a rotating shaft connected with a piston rod of the oil cylinder is sleeved in the bearing 73, a bearing cover 74 is buckled on the bearing cavity, and the bearing cover 74 is detachably connected with the slider seat 7 and used for limiting the bearing 73.
As shown in fig. 4 and 5, two guide seats 4 are fixedly arranged on the movable mold component 2, the two guide seats 4 are respectively located at two sides of the slider seat 7, and a curved sliding mechanism is respectively arranged between each guide seat 4 and the slider seat 7, and the curved sliding mechanism comprises a curved sliding rail and a sliding block in sliding fit with the curved sliding rail.
In this embodiment, as shown in fig. 5, the sliding grooves formed on the guide seat 4 form curved sliding rails, and the sliding blocks extend into the curved sliding rails and are fixedly connected with the sliding block seat 7.
As shown in fig. 6, the curved sliding rail includes a straight core-pulling section and a curved turning section which are connected in sequence, the straight core-pulling section and the curved turning section are connected in a smooth transition manner, an included angle between the straight core-pulling section and the mold opening direction of the fixed mold component 1 and the movable mold component 2 is an acute angle, one end of the curved turning section is connected with the straight core-pulling section, and the other end of the curved turning section deviates from the direction of the fixed mold component 1.
On the whole, one end of the curve slide rail is close to the cavity 9, the other end of the curve slide rail is far away from the cavity 9, and the linear core-pulling section is close to the cavity 9 compared with the curve turning section. The inner end of the straight line core-pulling section is close to the cavity 9, the outer end of the straight line core-pulling section extends towards the fixed die assembly 1 and deflects towards the direction of the straight line driving mechanism 3, the inner end of the curve turning section is in smooth transition connection with the outer end of the straight line core-pulling section, and the outer end of the curve turning section extends outwards back to the cavity 9. When the mold is closed, the axial direction of the mold core 8a at the front end of the slide block 8 is parallel to the linear core pulling section.
Further, two curved sliding mechanisms, namely a first curved sliding mechanism and a second curved sliding mechanism, are respectively arranged between each guide seat 4 and the slider seat 7. As shown in FIGS. 4 to 6, the first curved sliding mechanism includes a first curved sliding rail 5 and a first sliding block 71, and the second curved sliding mechanism includes a second curved sliding rail 6 and a second sliding block 72. The two first curved slide rails 5 and the two second curved slide rails 6 are respectively and oppositely parallel, and the first sliding block 71 and the second sliding block 72 are respectively and fixedly connected to the slider seat 7 corresponding to the first curved slide rails 5 and the second curved slide rails 6.
The first curve slide rail 5 and the second curve slide rail 6 on the same guide seat 4 are located in the same plane, the plane is parallel to the die opening and closing direction of the fixed die assembly 1 and the movable die assembly 2, and the first curve slide rail 5 is closer to the fixed die assembly 1 than the second curve slide rail 6.
The first curved slide rail 5 comprises a first straight core-pulling section 5a and a first curved turning section 5b, and the second curved slide rail 6 comprises a second straight core-pulling section 6a and a second curved turning section 6 b. The first linear core-pulling section 5a and the second linear core-pulling section 6a are parallel to each other. The first curve turning section 5b extends towards the linear driving mechanism 3 in a straight line, and the second curve turning section b deflects towards the extension of the linear driving mechanism 3 and the direction far away from the fixed die assembly 1.
And an ejector rod mechanism for demoulding products is arranged on the movable mould component 2.
Example two
A method for die-casting a product having a cavity with an oblique opening as described above, using a die as in the first embodiment, comprising the steps of:
step one, setting a mould, and after the mould is debugged, coating on the inner wall of a mould cavity of the mould;
step two, closing the mold, wherein the mold core 8a extends into the cavity 9, and the core pulling direction of the mold core 8a is parallel to the linear core pulling section;
injecting molten metal, cooling and solidifying the molten metal to form a workpiece A, and forming a pore channel or a cavity channel on the workpiece A by the mold core 8 a;
step four, opening the mold: the movable mold component 2 and the slide block mechanism leave the fixed mold component 1, and the moment is shown in FIG. 7;
step five, core pulling: the linear driving mechanism 3 drives the slider seat 7 and the slider 8 to gradually slide outwards, and when the slider slides along the linear core pulling section, the slider 8 slides linearly to enable the mold core 8a to leave the workpiece a, and at this time, as shown in fig. 8; then the sliding block slides along the curve turning section, at this time, the sliding block 8 continues to slide outwards and the front end of the sliding block turns over towards the fixed die assembly 1 until the demoulding path of the workpiece A is made way, as shown in fig. 9, so as to facilitate demoulding of the workpiece A;
step six, demoulding the workpiece: and the ejector rod mechanism pushes the workpiece A to demould.
Finally, necessary machining is performed to remove slugs, burrs, and the like.
When the workpiece A with the inclined deep hole/cavity is formed, the space occupied by the sliding block mechanism is smaller than that occupied by the sliding block mechanism which slides linearly, so that the forming die is particularly suitable for forming products under the conditions that the installation space is smaller, the die opening and closing space is limited and the sliding block core-pulling distance is larger.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (3)
1. A die casting method for a product with an oblique opening cavity is characterized by comprising the following steps:
step one, setting a mould: the die comprises a fixed die component (1) and a movable die component (2), a cavity (9) is arranged between the fixed die component and the movable die component, a slider mechanism is arranged on the movable die component (2), the slider mechanism comprises a linear driving mechanism (3), a slider seat (7) and a slider (8), a slider channel for the slider (8) to go in and out is arranged between the fixed die component (1) and the movable die component (2), the linear driving mechanism (3) is positioned outside the slider channel, the linear driving mechanism (3) is hinged with the slider seat (7), the slider seat (7) is fixedly connected with the slider (8), and a core (8a) is arranged at the front end of the slider (8);
a curve sliding mechanism is arranged between the sliding block seat (7) and the movable die assembly (2), and comprises a curve sliding rail and a sliding block in sliding fit with the curve sliding rail;
the curve slide rail comprises a straight core-pulling section and a curve turning section which are connected in sequence and are connected in a smooth transition way;
step two, closing the mold, wherein the mold core (8a) extends into the cavity (9);
step three, injecting molten metal, and cooling and solidifying the molten metal to form a workpiece (A);
step four, opening the mold: the movable mold component (2) and the sliding block mechanism leave the fixed mold component (1);
step five, core pulling: the linear driving mechanism (3) drives the sliding block seat (7) and the sliding block (8) to gradually slide outwards, the sliding block (8) firstly slides along the direction of the linear core pulling section to enable the mold core (8a) to leave the workpiece (A), then the sliding block (8) continuously slides outwards, and the front end of the sliding block overturns towards the fixed mold component (1) until a demolding path of the workpiece (A) is vacated;
step six, demoulding the workpiece;
two guide seats (4) are fixedly arranged on the movable die assembly (2), the two guide seats (4) are respectively positioned at two sides of the sliding block seat (7), the curve sliding mechanisms are respectively arranged between each guide seat (4) and the sliding block seat (7), the two curve sliding mechanisms are opposite in parallel, and in the fifth step, the sliding block seat (7) synchronously slides relative to the two guide seats (4);
the curved sliding rails are respectively arranged on each guide seat (4), and the sliding blocks are respectively arranged on the sliding block seats (7) corresponding to the two curved sliding rails;
one end of the linear core-pulling section is close to the cavity (9), the other end of the linear core-pulling section extends towards the fixed die assembly (1) and deviates towards the direction of the linear driving mechanism (3), and the curve turning section is positioned on one side, far away from the fixed die assembly (1), of the linear core-pulling section;
in the fifth step, the sliding block firstly slides along the linear core pulling section and then slides along the curve turning section.
2. The die-casting method for the product with the obliquely opened cavity according to claim 1, wherein: two curve sliding mechanisms, namely a first curve sliding mechanism and a second curve sliding mechanism, are respectively arranged between each guide seat (4) and the sliding block seat (7);
the first curve sliding mechanism comprises a first curve sliding rail (5) and a first sliding block (71), and the second curve sliding mechanism comprises a second curve sliding rail (6) and a second sliding block (72);
the two first curved slide rails (5) and the two second curved slide rails (6) are respectively and oppositely arranged in parallel, and the first sliding block (71) and the second sliding block (72) are respectively and fixedly connected to the slider seat (7) corresponding to the first curved slide rails (5) and the second curved slide rails (6);
the first curved slide rail (5) and the second curved slide rail (6) on the same guide seat (4) are positioned in the same plane, the plane is parallel to the die opening and closing direction of the fixed die assembly (1) and the movable die assembly (2), and the first curved slide rail (5) is closer to the fixed die assembly (1) than the second curved slide rail (6);
the straight-line core-pulling section of the first curve slide rail (5) and the straight-line core-pulling section of the second curve slide rail (6) are parallel to each other, the curve turning section of the first curve slide rail (5) extends to the straight-line driving mechanism (3) in a straight line, and the curve turning section of the second curve slide rail (6) deflects towards the direction far away from the fixed die assembly (1) while extending to the straight-line driving mechanism (3).
3. The die-casting method for the product with the obliquely opened cavity according to claim 1, wherein: and in the sixth step, the ejector rod mechanism pushes the workpiece (A) to demould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011133224.1A CN112247107B (en) | 2020-10-21 | 2020-10-21 | Die casting method for product with inclined opening cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011133224.1A CN112247107B (en) | 2020-10-21 | 2020-10-21 | Die casting method for product with inclined opening cavity |
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| Publication Number | Publication Date |
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| CN112247107A CN112247107A (en) | 2021-01-22 |
| CN112247107B true CN112247107B (en) | 2022-03-15 |
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| CN202011133224.1A Active CN112247107B (en) | 2020-10-21 | 2020-10-21 | Die casting method for product with inclined opening cavity |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20090007984A (en) * | 2007-07-16 | 2009-01-21 | 기아자동차주식회사 | Diecasting apparatus |
| CN102555167A (en) * | 2012-03-26 | 2012-07-11 | 揭阳市大立模具厂有限公司 | Inner core-pulling type mold |
| CN203330375U (en) * | 2013-05-15 | 2013-12-11 | 宁波北仑大港科技创新服务中心 | Die-casting mould with secondary combined core-pulling structure |
| CN104707964A (en) * | 2013-12-13 | 2015-06-17 | 牟维军 | Die mechanism for drawing arc hole in metal pressure casting die connecting rod |
| CN206392825U (en) * | 2016-12-02 | 2017-08-11 | 宁波市北仑赛维达机械有限公司 | A kind of sliding block deflecting motion structure |
| CN207325907U (en) * | 2017-11-08 | 2018-05-08 | 湖北中生汽车电器有限公司 | A kind of zinc alloy diecasting mould core-pulling mechanism |
| CN110355954A (en) * | 2019-08-20 | 2019-10-22 | 深圳市银宝山新科技股份有限公司 | A kind of bumper mold |
-
2020
- 2020-10-21 CN CN202011133224.1A patent/CN112247107B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090007984A (en) * | 2007-07-16 | 2009-01-21 | 기아자동차주식회사 | Diecasting apparatus |
| CN102555167A (en) * | 2012-03-26 | 2012-07-11 | 揭阳市大立模具厂有限公司 | Inner core-pulling type mold |
| CN203330375U (en) * | 2013-05-15 | 2013-12-11 | 宁波北仑大港科技创新服务中心 | Die-casting mould with secondary combined core-pulling structure |
| CN104707964A (en) * | 2013-12-13 | 2015-06-17 | 牟维军 | Die mechanism for drawing arc hole in metal pressure casting die connecting rod |
| CN206392825U (en) * | 2016-12-02 | 2017-08-11 | 宁波市北仑赛维达机械有限公司 | A kind of sliding block deflecting motion structure |
| CN207325907U (en) * | 2017-11-08 | 2018-05-08 | 湖北中生汽车电器有限公司 | A kind of zinc alloy diecasting mould core-pulling mechanism |
| CN110355954A (en) * | 2019-08-20 | 2019-10-22 | 深圳市银宝山新科技股份有限公司 | A kind of bumper mold |
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| CN112247107A (en) | 2021-01-22 |
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