CN112371947A - Product demoulding method for forming complex deep cavity structure by means of sliding block - Google Patents
Product demoulding method for forming complex deep cavity structure by means of sliding block Download PDFInfo
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- CN112371947A CN112371947A CN202011149165.7A CN202011149165A CN112371947A CN 112371947 A CN112371947 A CN 112371947A CN 202011149165 A CN202011149165 A CN 202011149165A CN 112371947 A CN112371947 A CN 112371947A
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- sliding block
- thimble
- cavity
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- oil cylinder
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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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- 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
-
- 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
- B22D17/26—Mechanisms or devices for locking or opening dies
- B22D17/266—Mechanisms or devices for locking or opening dies hydraulically
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a product demoulding method for forming a complex deep cavity structure by means of a sliding block, which comprises the following steps: the front end of a sliding block of the mould slides and extends into the cavity, an ejector pin is movably arranged on the sliding block along the sliding direction of the sliding block in a penetrating manner, the inner end of the ejector pin faces the cavity of the mould, the outer end of the ejector pin is connected with an ejector pin driving mechanism, and the ejector pin driving mechanism is used for pushing the ejector pin to inwards eject when the sliding block slides outwards; and then sequentially carrying out die assembly and molten metal injection, then demoulding the slide block, driving the slide block to slide outwards by the slide block driving mechanism, simultaneously driving the thimble by the thimble driving mechanism to inwards push against the workpiece until the slide block is separated, and finally opening the die to take out the workpiece. The invention has the beneficial effects that: for a workpiece which has a deep cavity structure or a similar deep cavity structure on the surface and is formed by a lateral sliding block, the method can prevent the part of the workpiece from moving outwards along with the sliding block and from adhesion, is easy for demoulding of the sliding block compared with a die in the prior art, can prevent the workpiece from being over-tolerance or damaged in tensile deformation size, and improves the product quality.
Description
Technical Field
The invention belongs to the technical field of die casting, and particularly relates to a product demoulding method for forming a complex deep cavity structure by means of a sliding block.
Background
The lateral sliding block mechanism is a common structural part on a die-casting die and is used for forming a hole/cavity on a workpiece, the sliding direction of the sliding block is not parallel to the die opening and closing direction of a die, and the sliding block is withdrawn in advance before the product is demoulded. However, when the side structure of the product is complex and a plurality of reinforcing ribs or columnar protrusions are designed, a deep cavity structure or an approximate deep cavity structure is formed between the rib plates or between the columnar protrusions, and the front end profile of the sliding block for forming the side structure of the product is correspondingly designed with protrusions or depressions. After the casting is cooled and formed, the wrapping force of the reinforcing ribs or the columnar protrusions on the front end of the sliding block is large, when the sliding block retreats, the reinforcing ribs or the columnar protrusions are adhered to the sliding block due to the fact that the wrapping force is too large, so that the reinforcing ribs or the columnar protrusions have the tendency of moving along with the sliding block, the structures are prone to cracking, and workpieces are scrapped. Or the side wall of the product expands outward and deforms, so that the size of the opening of the cavity surrounded by the side wall of the product is increased, and the design requirement cannot be met. Therefore, it is necessary to improve the structural design and production process of the mold to prevent the product from sticking to the slider.
Disclosure of Invention
In view of the above, the present invention provides a method for demolding a product by using a slider to mold a complex deep cavity structure.
The technical scheme is as follows:
a product demoulding method for forming a complex deep cavity structure by means of a sliding block is characterized by comprising the following steps:
step one, setting a mould: the die comprises a fixed die assembly and a movable die assembly, and a cavity and a lateral sliding block mechanism are arranged between the fixed die assembly and the movable die assembly;
the lateral sliding block mechanism comprises a sliding block driving mechanism, a sliding block seat and a sliding block, the sliding block driving mechanism is connected with the sliding block through the sliding block seat, and the front end of the sliding block extends into the cavity in a sliding mode;
a thimble hole penetrates through the sliding block along the sliding direction of the sliding block, a thimble movably penetrates through the thimble hole, the inner end of the thimble faces the cavity, the outer end of the thimble is connected with a thimble driving mechanism, and the thimble driving mechanism is used for pushing the thimble to inwards eject when the sliding block is driven by the sliding block driving mechanism to slide outwards;
the cavity is connected with a sprue bush which is butted with the pressure chamber;
step two, die assembly: the fixed die assembly and the movable die assembly are matched, and a closed cavity is formed in the fixed die assembly and the movable die assembly;
step three, injecting molten metal: the molten metal is injected into the cavity from the pressure chamber through the sprue bush and is cooled and formed into a workpiece;
step four, releasing the sliding block: the slide block driving mechanism drives the slide block to slide outwards, and meanwhile, the thimble driving mechanism pushes the thimble to inwards press the workpiece until the slide block is separated;
step five, opening the mold: and the movable die assembly is separated from the fixed die assembly, and the workpiece is demoulded.
By adopting the method, the advantage is that when the formed workpiece is demoulded, the slide block driving mechanism drives the slide block to slide outwards, the thimble driving mechanism synchronously applies inward jacking pressure, and the jacking pressure enables the thimble to push the workpiece and the slide block to be separated, so that the effects of preventing the part of the workpiece from moving outwards along with the slide block and adhesion are achieved, and the workpiece is prevented from being stretched, deformed and damaged due to over-tolerance in size.
According to a preferable technical scheme, the front end of the sliding block is provided with a sliding block cavity, the sliding block cavity faces the cavity and is communicated with the cavity, and the sliding block cavity is used for forming an outward protruding part on the surface of the workpiece.
By adopting the method, a complex structure can be formed on the surface of the workpiece, when the sliding block is separated, because the cooled convex part on the surface of the workpiece plays a role in clamping the sliding block, the thimble is inwards jacked at the moment, the effects of limiting and preventing adhesion are achieved on the workpiece, and the sliding block can conveniently slide out.
According to the preferable technical scheme, the cavity of the sliding block is a groove, and at least two grooves are mutually crossed and communicated and are used for forming reinforcing ribs which are mutually crossed and connected on the surface of the workpiece.
By adopting the method, the method can be used for processing the workpiece with the complex reinforcing ribs on the surface.
According to a preferable technical scheme, a reinforcing column hole is formed in the intersection of the type grooves, the diameter of the reinforcing column hole is larger than the width of the type grooves, and the reinforcing column hole is used for forming a thimble column at the connection position between the reinforcing ribs of the workpiece.
By adopting the design, the thimble column is used for bearing the jacking pressure of the thimble, the sectional area is large, the thimble and the thimble cannot be aligned accurately, and the bearing capacity of the thimble column is stronger than that of the reinforcing rib.
As a preferred technical scheme, the cavity of the sliding block is a shaped hole, and at least two shaped holes are arranged along the sliding direction of the sliding block and used for forming a plurality of convex columns on the surface of the workpiece.
By adopting the method, the method can be used for processing the workpiece with a plurality of columnar bulges on the surface.
As a preferred technical scheme, at least two top pin holes are provided, and the inner ends of the top pin holes are opposite to the reinforcing column holes or the profile holes and communicated with the reinforcing column holes or the profile holes;
the outer ends of all the thimbles are connected with the same thimble plate, and the thimble plate is connected with the thimble driving mechanism;
in the fourth step, the thimble pushes the thimble column or the convex column.
By adopting the design, the slide block and the workpiece can be conveniently separated by pressing the plurality of points.
The sliding block driving mechanism is a first oil cylinder, the thimble driving mechanism is a second oil cylinder, the first oil cylinder and the second oil cylinder are arranged side by side, the cylinder bodies of the first oil cylinder and the second oil cylinder are respectively connected with the fixed die assembly, the piston rod of the first oil cylinder is connected with the sliding block seat, and the piston rod of the second oil cylinder is connected with the thimble;
in the first step, the piston rod of the first oil cylinder extends out to enable the sliding block to tightly abut against the wall of the cavity so as to seal the cavity, and the piston rod of the second oil cylinder presses the thimble so as to seal the thimble hole;
in the fourth step, the piston rod of the first oil cylinder retracts to drive the sliding block to slide outwards, and meanwhile, the piston rod of the second oil cylinder presses the thimble.
By adopting the design, the two oil cylinders respectively drive the sliding block and the thimble to move, and the control is easy.
According to a preferable technical scheme, the number of the slide block mechanisms is two, the two slide block mechanisms are respectively positioned on two sides of the cavity, the sliding directions of the two slide blocks are parallel to each other, and an included angle between the sliding directions of the two slide blocks and the mold opening and closing direction is larger than 0 degree and smaller than 180 degrees.
In the fourth step, the two sliding blocks are synchronously separated.
By adopting the design, the device is used for producing the workpiece with the deep cavity structure or the similar deep cavity structure on the outer surfaces of the two sides respectively.
As a preferred technical scheme, the fixed die assembly is provided with a wedging block, the sliding block seat is provided with a limiting wedge block, and the limiting wedge block is matched with the wedge of the wedging block.
By adopting the design, the wedging block plays a wedging role in the limiting wedge block during die assembly, and the sliding block is stabilized in the molten metal injection process.
According to a preferable technical scheme, the fixed die assembly is provided with a sliding block driving limiting block, the sliding block driving limiting block is located outside the fixed die assembly, and a piston rod limiting block is arranged on the first oil cylinder piston rod and corresponds to the sliding block driving limiting block.
By adopting the design, the inward sliding position of the sliding block is limited.
Compared with the prior art, the invention has the beneficial effects that: for a workpiece which has a deep cavity structure or a similar deep cavity structure on the surface and is formed by a lateral sliding block, the die sliding block driving mechanism of the method drives the sliding block to slide outwards, and the ejector pin driving mechanism synchronously applies inward jacking pressure to push the workpiece and the sliding block to be separated, so that the effects of preventing the part of the workpiece from moving outwards along with the sliding block and preventing adhesion are achieved.
Drawings
FIG. 1 is a schematic structural view of a mold employed in the present invention;
FIG. 2 is an enlarged view of section m of FIG. 1;
FIG. 3 is a schematic diagram of an oil cylinder as a driving mechanism for driving a slider and an ejector pin to move respectively;
FIG. 4 is a schematic view from another perspective of FIG. 3, further illustrating a hydraulic circuit between the first cylinder and the second cylinder;
FIG. 5 is a schematic diagram of a workpiece having a complex deep cavity structure and formed by means of lateral slides;
FIG. 6 is a schematic view of a slider with a slot and a reinforcing post hole formed in the front end surface;
FIG. 7 is a schematic view of the workpiece of FIG. 5 after the structure has been modified, with the addition of a thimble post to facilitate removal of the slide during molding.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Example one
As shown in figure 1, the mold for preventing the slide block from sticking comprises a fixed mold component 1 and a movable mold component 2, and a cavity 3 and a lateral slide block mechanism are arranged between the fixed mold component 1 and the movable mold component 2. The cavity 3 is connected with a sprue bush 12, and the sprue bush 12 is used for abutting against a pressure chamber. The lateral sliding block mechanism comprises a sliding block driving mechanism 4, a sliding block seat 6 and a sliding block 7, the sliding block driving mechanism 4 is connected with the sliding block 7 through the sliding block seat 6, and the front end of the sliding block 7 extends into the cavity 3 in a sliding mode. The fixed die component 1 is provided with a wedging block 10, the sliding block seat 6 is provided with a limiting wedge block 11, and the limiting wedge block 11 is matched with the wedging block 10 in an inclined wedge mode and used for stabilizing the sliding block 7 during die assembly.
The front end of the sliding block 7 is provided with a sliding block cavity, the sliding block cavity faces the cavity 3 and is communicated with the cavity, and the sliding block cavity is used for forming an outward bulge on the surface of the workpiece.
An ejector pin hole penetrates through the sliding block 7 along the sliding direction of the sliding block, an ejector pin 9 penetrates through the ejector pin hole in a movable mode, the inner end of the ejector pin 9 faces the cavity 3, an ejector pin plate 8 is connected to the outer end of the ejector pin 9, the ejector pin plate 8 is connected with an ejector pin driving mechanism 5, and the ejector pin driving mechanism 5 is used for driving the sliding block driving mechanism 4 to drive the ejector pin 9 to eject inwards when the sliding block 7 slides outwards. As shown in fig. 2, at least two ejector pins 9 are provided, and the outer ends of all the ejector pins 9 are connected with the same ejector plate 8.
As shown in fig. 3 and 4, the slider driving mechanism 4 is a first oil cylinder, the thimble driving mechanism 5 is a second oil cylinder, and two of the first oil cylinder and two of the second oil cylinder are arranged side by side along a sliding direction perpendicular to the slider seat 6. The cylinder body of first hydro-cylinder and second hydro-cylinder respectively with cover half subassembly 1 is connected, two the piston rod of first hydro-cylinder is connected slider holder 6, two the thimble board 8 is connected to the piston rod of second hydro-cylinder, and thimble 9 is connected to thimble board 8. For the convenience of control, the first oil cylinder and the second oil cylinder are both connected with an oil collector 10 arranged on the fixed die assembly 1. For the first oil cylinder and the second oil cylinder, an oil port on a side cavity far away from the front end of the piston rod is used as an oil inlet, and an oil port on a side cavity close to the front end of the piston rod is used as an oil outlet. The main oil path inlet and the main oil path outlet of the oil collector 10 are respectively connected with the machine table, the first functional oil port of the oil collector 10 is connected with the oil inlet of the first oil cylinder, the oil outlet of the first oil cylinder is connected with the oil outlet of the second oil cylinder, and the oil inlet of the second oil cylinder is connected with the second functional oil port of the oil collector 10. Therefore, when hydraulic oil is input into the first oil cylinder from the oil collector 10, a piston rod of the first oil cylinder is pushed to extend out, so that the front end of the sliding block 7 driven by the sliding block seat 6 slides and extends into the cavity 3, meanwhile, the hydraulic oil in a cavity close to an oil outlet of the first oil cylinder flows into an oil outlet of the second oil cylinder, a piston rod of the second oil cylinder is pushed to retract, so that the thimble plate 8 drives the thimble 9 to retreat outwards, and at the moment, the hydraulic oil in the cavity on the side of the oil inlet of the second oil cylinder flows back to the second functional oil port; when the flow direction of the hydraulic oil is opposite, the piston rod of the first oil cylinder retracts, so that the slide block seat 6 drives the front end of the slide block 7 to slide and exit the cavity 3, and simultaneously the piston rod of the second oil cylinder extends out, so that the ejector pin plate 8 drives the ejector pin 9 to push forwards, namely the slide block 7 is in a demoulding state.
In this embodiment, there are two slide block mechanisms, the two slide block mechanisms are respectively located at two sides of the cavity 3, the sliding directions of the two slide blocks 7 are parallel to each other, and an included angle between the sliding directions and the mold opening and closing direction is greater than 0 degree and smaller than 180 degrees. Because the region forms dark chamber or the class deep cavity structure between the bellying on work piece surface, this type of structure has the package power to the slider, and during the mould slider drawing of patterns of prior art, drive work piece surface bellying and lateral wall outwards remove thereupon easily, cause tensile deformation even damage. This is more likely to occur when the outer surfaces of a pair of opposite side walls of the workpiece are each provided with a deep cavity or deep cavity-like structure. When the mold of the embodiment is used for molding, the first oil cylinder piston rod drives the sliding block 7 to be separated, and the second oil cylinder piston rod pushes the ejector retainer plate 8 inwards to separate the workpiece from the sliding block 7, so that the condition can be prevented.
Example two
Referring to fig. 5, a workpiece is a thin-wall member with an inner cavity, and the design process is to open the mold along the opening direction of the inner cavity, the end part of the inner cavity is also provided with an end opening a1 formed by a slide block, a large number of staggered reinforcing ribs a2 are arranged outside two side walls of the inner cavity, and the inner cavity is also formed by the slide block. The figure is a schematic diagram of a thin-wall part. After cooling, the workpiece a shrinks, and the deep hole/cavity clamping dies between the reinforcing ribs a2 and the slide block are difficult to separate, so that the side wall of the workpiece is pulled to be damaged or the size of the opening a1 at the end of the workpiece is out of tolerance. In order to avoid the above problems, the mold according to the first embodiment is used for molding. As shown in fig. 6, the slide cavity of the mold is a groove 7a, the groove 7a faces the cavity 3 and communicates therewith, and the grooves 7a intersect and communicate with each other to form the above-mentioned rib a2 on the surface of the workpiece.
The forming method of the product with the complex deep cavity structure comprises the following steps:
step one, setting a mould; in order to further facilitate the demolding of the slider 7, as shown in fig. 6, a reinforcing column hole 7b is formed at the intersection of the profiled grooves 7a, the diameter of the reinforcing column hole 7b is larger than the width of the profiled groove 7a, and the reinforcing column hole is used for forming an ejector pin column a3 shown in fig. 7 at the connection between the reinforcing ribs a2 of the workpiece;
the slide block 7 is provided with a plurality of thimble holes, and the inner ends of the thimble holes are opposite to and communicated with the reinforcing column holes 7 b;
step two, die assembly: the fixed die assembly 1 and the movable die assembly 2 are matched, and a closed cavity 3 is formed in the fixed die assembly and the movable die assembly;
the first oil cylinder piston rod extends out to enable the sliding block 7 to tightly abut against the wall of the cavity 3 so as to seal the cavity, and the second oil cylinder piston rod abuts against the thimble 9 so as to seal the thimble hole;
step three, injecting molten metal: molten metal is injected into the cavity 3 from the pressure chamber through the sprue bush 12, and is cooled and formed into a workpiece;
step four, releasing the sliding block: the first oil cylinder piston rod retracts to drive the sliding block 7 to slide outwards, and meanwhile, the second oil cylinder piston rod pushes all the ejector pins 9 to inwards eject the corresponding ejector pin columns a3 of the workpiece a until the sliding block 7 is separated; in the process, the two sliding blocks 7 for forming the outer surface structures of the two side walls of the workpiece are pulled out together; other sliding blocks without the thimble are also separated in the step;
step five, opening the mold: the movable die assembly 2 is separated from the fixed die assembly 1, and the workpiece is demoulded;
finally, the workpiece is subjected to the necessary machining to obtain the product.
The method designs the thimble columns a3 at the joints between the reinforcing ribs a2 of the side wall of the product by considering the structure of the product and the general disc of the forming process. The reinforcing rib plate a2 is formed by a groove 7a on the front end face of the slide block 7 during die-casting, the ejector pin column a3 on the formed workpiece is opposite to the inner end of the ejector pin 9, and the ejector pin column a3 is used for bearing the ejection pressure of the ejector pin 9 during demoulding of the slide block 7. When the first oil cylinder piston rod drives the slide block 7 to be separated, the thimble 9 pushes the thimble post a3 to separate the workpiece from the slide block 7, thereby effectively preventing the workpiece from being damaged by pulling or the size of the opening a1 at the end part of the workpiece from being out of tolerance due to the workpiece being adhered to the slide block 7.
The method is also suitable for forming the workpiece with the surface provided with the convex parts with other shapes and the areas between the convex parts forming the deep cavity or the structure similar to the deep cavity. For example, in another embodiment, the side wall surface of the workpiece a is arranged with a plurality of convex columns with center lines parallel to each other. Correspondingly, the slide block cavities are shaped holes, at least two of which are arranged along the sliding direction of the slide block 7 and used for forming convex columns on the surface of the workpiece, and the processing and forming method is the same as the above.
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 (7)
1. A product demoulding method for forming a complex deep cavity structure by means of a sliding block is characterized by comprising the following steps:
step one, setting a mould: the die comprises a fixed die assembly (1) and a movable die assembly (2), and a cavity (3) and a lateral sliding block mechanism are arranged between the fixed die assembly and the movable die assembly;
the lateral sliding block mechanism comprises a sliding block driving mechanism (4), a sliding block seat (6) and a sliding block (7), the sliding block driving mechanism (4) is connected with the sliding block (7) through the sliding block seat (6), and the front end of the sliding block (7) extends into the cavity (3) in a sliding mode;
a thimble hole penetrates through the sliding block (7) along the sliding direction of the sliding block, a thimble (9) is movably arranged in the thimble hole, the inner end of the thimble (9) faces the cavity (3), the outer end of the thimble (9) is connected with a thimble driving mechanism (5), and the thimble driving mechanism (5) is used for pushing the thimble (9) to inwards jack when the sliding block (7) is driven by the sliding block driving mechanism (4) to slide outwards;
the cavity (3) is connected with a sprue bush (12), and the sprue bush (12) is butted with a pressure chamber;
step two, die assembly: the fixed die assembly (1) and the movable die assembly (2) are matched, and a closed cavity (3) is formed in the fixed die assembly and the movable die assembly;
step three, injecting molten metal: the molten metal is injected into the cavity (3) from the pressure chamber through the sprue bush (12) and is cooled and formed into a workpiece;
step four, releasing the sliding block: the slide block driving mechanism (4) drives the slide block (7) to slide outwards, and meanwhile, the thimble driving mechanism (5) pushes the thimble (9) to inwards press the workpiece until the slide block is separated;
step five, opening the mold: and the movable die assembly (2) is separated from the fixed die assembly (1), and the workpiece is demoulded.
2. The method for demoulding the product with a complex deep cavity structure by means of the slider as claimed in claim 1, wherein: the front end of the sliding block (7) is provided with a sliding block cavity, the sliding block cavity faces the cavity and is communicated with the cavity, and the sliding block cavity is used for forming an outward bulge on the surface of the workpiece.
3. The method for demoulding the product with the complex deep cavity structure formed by the slide block according to the claim 2, is characterized in that: the cavity of the sliding block is provided with at least two shaping grooves (7a), and the at least two shaping grooves (7a) are mutually crossed and communicated and are used for forming mutually crossed and connected reinforcing ribs (a2) on the surface of the workpiece.
4. The method for demoulding the product with a complex deep cavity structure by means of the slider as claimed in claim 3, wherein: and reinforcing column holes (7b) are formed at the intersection of the section grooves (7a), the diameter of each reinforcing column hole (7b) is larger than the width of each section groove (7a), and the reinforcing column holes are used for forming thimble columns (a3) at the connection positions between the reinforcing ribs (a2) of the workpiece.
5. The method for demoulding the product with the complex deep cavity structure formed by the slide block according to the claim 2, is characterized in that: the sliding block cavities are shaped holes, and at least two shaped holes are arranged along the sliding direction of the sliding block (7) and used for forming a plurality of convex columns on the surface of the workpiece.
6. The method for demoulding a product with a complex deep cavity structure formed by means of a sliding block according to claim 4 or 5, wherein the method comprises the following steps: the number of the top pin holes is at least two, and the inner end of each top pin hole is over against the reinforcing column hole (7b) or the profile hole and communicated with the reinforcing column hole or the profile hole;
the outer ends of all the thimbles (9) are connected with the same thimble plate (8), and the thimble plate (8) is connected with the thimble driving mechanism (5);
in the fourth step, the thimble (9) pushes the thimble column (a3) or the convex column.
7. The method for demoulding a product with a complex deep cavity structure formed by means of a sliding block according to claim 1 or 2, wherein the method comprises the following steps: the slide block driving mechanism (4) is a first oil cylinder, the thimble driving mechanism (5) is a second oil cylinder, the first oil cylinder and the second oil cylinder are arranged side by side, the cylinder bodies of the first oil cylinder and the second oil cylinder are respectively connected with the fixed die assembly (1), the piston rod of the first oil cylinder is connected with the slide block seat (6), and the piston rod of the second oil cylinder is connected with the thimble (9);
in the first step, a piston rod of the first oil cylinder extends out to enable the sliding block (7) to tightly abut against the wall of the cavity (3) so as to seal the cavity, and a piston rod of the second oil cylinder presses the thimble (9) so as to seal the thimble hole;
in the fourth step, the piston rod of the first oil cylinder retracts to drive the sliding block (7) to slide outwards, and meanwhile, the piston rod of the second oil cylinder presses the thimble (9).
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| CN202011149165.7A CN112371947B (en) | 2020-10-23 | 2020-10-23 | Product demoulding method for forming complex deep cavity structure by means of sliding block |
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| CN202011149165.7A CN112371947B (en) | 2020-10-23 | 2020-10-23 | Product demoulding method for forming complex deep cavity structure by means of sliding block |
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| CN112371947B CN112371947B (en) | 2022-08-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182503A (en) * | 2021-04-30 | 2021-07-30 | 广东鸿图武汉压铸有限公司 | Prevent that product from drawing to split deformation mould ejection mechanism |
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| CN106270450A (en) * | 2016-09-27 | 2017-01-04 | 浙江华朔科技股份有限公司 | A kind of die casting with multiple pulled core structure |
| CN107498020A (en) * | 2017-08-29 | 2017-12-22 | 宁波吉烨汽配模具有限公司 | The slide block device that a kind of band ejects in advance |
| CN111745138A (en) * | 2019-03-27 | 2020-10-09 | 苏州汉扬精密电子有限公司 | Sliding block ejection mechanism and die-casting die |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182503A (en) * | 2021-04-30 | 2021-07-30 | 广东鸿图武汉压铸有限公司 | Prevent that product from drawing to split deformation mould ejection mechanism |
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