阅读说明：本技术 油缸互锁式防止型芯后退的压铸模具结构及其成型方法 (Oil cylinder interlocking type die-casting die structure for preventing core from retreating and forming method thereof ) 是由 李文巧 李文兵 刘怀志 彭鹏 陈娟 高维刚 于 2021-08-03 设计创作，主要内容包括：本发明涉及压铸模具技术领域,提供了油缸互锁式防止型芯后退的压铸模具结构及其成型方法,包括底板,所述底板的上方固定连接有紧固柱,所述紧固柱的前部固定连接有固定机构,所述固定机构包含有固定块、固定螺丝和中心孔。本发明通过底板、紧固柱、固定机构、圆筒、圆柱、辅助机构、注射机构、楔紧块、连接槽和对接机构的相互配合连接使用,解决了设备定模侧难以布置楔紧块封锁滑块,滑块存在后退的现象,导致铸件尺寸不合格,无法连续生产的问题,使设备成型铸件上与开模方向夹角大于九十度的产品形状,能够有效保证产品形状的尺寸稳定性,降低铸件废品率,从而避免资源浪费使用。(The invention relates to the technical field of die-casting dies, and provides a die-casting die structure with an oil cylinder interlocked type mold core backward-moving prevention function and a forming method thereof. According to the invention, the bottom plate, the fastening column, the fixing mechanism, the cylinder, the auxiliary mechanism, the injection mechanism, the wedging block, the connecting groove and the butt joint mechanism are mutually matched and connected for use, so that the problems that the wedging block is difficult to arrange on the fixed die side of the equipment to block the sliding block, the sliding block retreats to cause unqualified casting size and continuous production cannot be realized are solved, the included angle between the equipment forming casting and the die sinking direction is more than ninety degrees, the size stability of the product shape can be effectively ensured, the rejection rate of the casting is reduced, and the waste and the use of resources are avoided.)

1. Hydro-cylinder interlocking formula prevents die casting die structure and forming method that the core retreats, including bottom plate (1), its characterized in that: the upper part of the bottom plate (1) is fixedly connected with a fastening column (2), the front part of the fastening column (2) is fixedly connected with a fixing mechanism (3), the fixing mechanism (3) comprises a fixing block (301), a fixing screw (302) and a central hole (303), the front part of the fixing block (301) is fixedly connected with the fixing screw (302), the middle part of the fixing screw (302) is fixedly connected with the central hole (303), the upper part of the fixing mechanism (3) is fixedly connected with a cylinder (4), the upper part of the cylinder (4) is fixedly connected with a cylinder (5), the middle part of the cylinder (5) is fixedly connected with an auxiliary mechanism (6), the auxiliary mechanism (6) comprises a bolt (601), a front cover plate (602), a frame (603), an upper cover plate (604) and a support column (605), the rear part of the bolt (601) is fixedly connected with the front cover plate (602), the rear part of the front cover plate (602) is fixedly connected with a frame (603), an upper cover plate (604) is fixedly connected above the frame (603), a top column (605) is fixedly connected above the upper cover plate (604), a clamping ring (7) is fixedly connected at the rear part of the auxiliary mechanism (6), a cover cap (8) is fixedly connected above the clamping ring (7), a connecting port (9) is fixedly connected at the front part of the cover cap (8), and an injection mechanism (10) is fixedly connected at the left side of the connecting port (9);

the injection mechanism (10) comprises a storage bin (1001), a partition plate (1002) and a butt joint (1003), the partition plate (1002) is fixedly connected to the top of the storage bin (1001), the butt joint (1003) is fixedly connected to the top of the partition plate (1002), a wedging block (11) is fixedly connected to the left side of the injection mechanism (10), the wedging block (11) comprises a supporting column (1101), a positioning plate (1102) and a connecting groove (1103), the positioning plate (1102) is fixedly connected to the right side of the supporting column (1101), the connecting groove (1103) is fixedly connected to the right side of the positioning plate (1102), a hydraulic cylinder (12) is fixedly connected to the left side of the wedging block (11), the hydraulic cylinder (12) comprises a protective shell 1201 (1201), a supporting frame (1202), an impact pump (1203), a reinforcing plate (1204) and a protruding column (1205), and the supporting frame (1202) is fixedly connected to the left side of the protective shell (1201), the middle part fixedly connected with impact pump (1203) of support frame (1202), the left side fixedly connected with reinforcing plate (1204) of impact pump (1203), the outstanding post (1205) of left side fixedly connected with of reinforcing plate (1204), rear portion fixedly connected with docking mechanism (13) of pneumatic cylinder (12), top mould post (1301), release link (1302), recess (1303) and drawing material pole (1304) of docking mechanism (13), the anterior fixedly connected with release link (1302) of top mould post (1301), the top fixedly connected with recess (1303) of release link (1302), the anterior fixedly connected with of recess (1303) draws material pole (1304).

2. The cylinder interlocking type die-casting die structure for preventing the core from retreating and the forming method thereof as claimed in claim 1, wherein: the bottom plate (1) is connected with the fastening column (2) in a clamping manner, and the bottom plate (1) and the central axis of the fixing mechanism (3) are overlapped.

3. The cylinder interlocking type die-casting die structure for preventing the core from retreating and the forming method thereof as claimed in claim 1, wherein: the fixing block (301) is tightly attached to the fixing screws (302), the number of the fixing screws (302) is two, and the fixing screws (302) are symmetrical with the central hole (303).

4. The cylinder interlocking type die-casting die structure for preventing the core from retreating and the forming method thereof as claimed in claim 1, wherein: the inner size of the cylinder (4) is matched with the outer size of the cylinders (5), the number of the cylinders (5) is multiple, and the central axes of the cylinders (5) and the auxiliary mechanism (6) are symmetrical.

5. The cylinder interlocking type die-casting die structure for preventing the core from retreating and the forming method thereof as claimed in claim 1, wherein: the bolts (601) are connected with the front cover plate (602) through clamping, and the front cover plate (602) is connected with the frame (603) through welding.

6. The cylinder interlocking type die-casting die structure for preventing the core from retreating and the forming method thereof as claimed in claim 1, wherein: the snap ring (7) and the central axis of the cap (8) are overlapped, and the cap (8) and the snap ring (7) are connected through clamping.

7. The cylinder interlocking type die-casting die structure for preventing the core from retreating and the forming method thereof as claimed in claim 1, wherein: the storage bin (1001) is tightly attached to the partition plate (1002), and the partition plate (1002) is connected with the butt joint port (1003) through welding.

8. The cylinder interlocking type die-casting die structure for preventing the core from retreating and the forming method thereof as claimed in claim 1, wherein: the wedge block (11) is connected with the hydraulic cylinder (12) through clamping, and an angle larger than ninety degrees is formed between the hydraulic cylinder (12) and the butt joint mechanism (13).

9. The cylinder interlocking type die-casting die structure for preventing the core from retreating and the forming method thereof as claimed in claim 1, wherein: the protective shell (1201) is connected with the support frame (1202) through clamping, and a limiting groove with the same size is formed between the joint of the protective shell (1201) and the impact pump (1203) and the reinforcing plate (1204).

10. The cylinder interlocking type die-casting die structure for preventing the core from retreating and the forming method thereof as claimed in claim 1, wherein: the center lines of the top mold columns (1301) and the reset rods (1302) are overlapped, the number of the reset rods (1302) is two, and the center lines of the reset rods (1302) are symmetrical with the center line of the groove (1303).

Technical Field

The invention relates to the technical field of die-casting dies, in particular to a die-casting die structure with an oil cylinder interlocked type mold core back-off prevention and a forming method thereof.

Background

The mould, the industrial production uses injection moulding, blow moulding, extrusion, die-casting or forging forming, smelting, various moulds and tools of the punching press to get the required products, in short, the mould is the tool used for making the shaping article, this kind of tool is formed by various parts, different moulds are formed by different parts, it mainly realizes the processing of the article appearance through the change of the physical state of the shaping material, the name is "industrial mother", make the blank become the tool of the finished piece with specific shape and size under the external force, it is used in blanking, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, and the shaping processing of compression moulding or injection moulding of the products such as engineering plastics, rubber, ceramic, etc., the mould has specific outline or cavity shape, the use has outline shape of the cutting edge to make the blank separate according to the outline shape, the die casting has the advantages that the blank can obtain a corresponding three-dimensional shape by applying the shape of the inner cavity, the die generally comprises a movable die and a fixed die, the movable die and the fixed die can be separated and combined, a workpiece is taken out when the movable die and the fixed die are separated, the blank is injected into a die cavity of the die to be formed when the movable die is combined, the die is a precise tool and has a complex shape, the expansion force of the blank is borne, and the requirements on structural strength, rigidity, surface hardness, surface roughness and machining precision are high.

The die casting die that has die cavity pressure at present looses core structure all adopts hydraulic pressure to loose core the hydro-cylinder and drive the slider and loose core, and during the compound die, by cover half wedging piece blockade slider, avoid the slider to retreat, if the contained angle of side opening or the die drawing direction of undercut and die sinking direction is greater than ninety degrees, the cover half side is difficult to arrange the wedging piece and blockades the slider, and the slider has the phenomenon of retreating, leads to the foundry goods size unqualified, the shortcoming of unable continuous production.

Disclosure of Invention

The invention provides an oil cylinder interlocking type die-casting die structure for preventing a core from retreating and a forming method thereof, aiming at the defects of the prior art, the oil cylinder interlocking type die-casting die structure has the advantages that the product shape with an included angle of more than 90 degrees with the die opening direction on a formed casting can be formed, the dimensional stability of the product shape can be effectively ensured, the rejection rate of the casting is reduced, and the like, and the problems that the core-pulling structure of the die-casting die with cavity pressure adopts a hydraulic core-pulling oil cylinder to drive a slide block to loose core, the slide block is blocked by a fixed die wedge block during die closing, the slide block retreating is avoided, if the included angle of a side hole or a side concave die discharging direction with the die opening direction is more than ninety degrees, the slide block is difficult to block by arranging the wedge block at the fixed die side, the slide block has the retreating phenomenon, the casting size is unqualified, and continuous production cannot be realized are solved.

In order to realize the product shape with an included angle of more than ninety degrees with the mold opening direction on the casting, effectively ensure the dimensional stability of the product shape and reduce the rejection rate of the casting, the invention provides the following technical scheme: the die-casting die structure comprises a bottom plate, wherein a fastening column is fixedly connected above the bottom plate, the front part of the fastening column is fixedly connected with a fixing mechanism, the fixing mechanism comprises a fixing block, a fixing screw and a central hole, the front part of the fixing block is fixedly connected with the fixing screw, the middle part of the fixing screw is fixedly connected with the central hole, a cylinder is fixedly connected above the fixing mechanism, a cylinder is fixedly connected above the cylinder, the middle part of the cylinder is fixedly connected with an auxiliary mechanism, the auxiliary mechanism comprises a bolt, a front cover plate, a frame, an upper cover plate and a top column, the rear part of the bolt is fixedly connected with the front cover plate, the rear part of the front cover plate is fixedly connected with the frame, the upper part of the frame is fixedly connected with the upper cover plate, and the top column is fixedly connected above the upper cover plate, the rear portion fixedly connected with snap ring of complementary unit, the top fixedly connected with block of snap ring, the anterior fixedly connected with connector of block, the left side fixedly connected with injection mechanism of connector.

Injection mechanism includes feed bin, baffle, interface, the top fixedly connected with baffle of feed bin, the top fixedly connected with interface of baffle, the left side fixedly connected with wedging piece of injection mechanism, the wedging piece includes pillar, locating plate and spread groove, the right side fixedly connected with locating plate of pillar, the right side fixedly connected with spread groove of locating plate, the left side fixedly connected with pneumatic cylinder of wedging piece, the pneumatic cylinder includes protecting crust, support frame, impact pump, reinforcing plate and outstanding post, the left side fixedly connected with support frame of protecting crust, the middle part fixedly connected with impact pump of support frame, the left side fixedly connected with reinforcing plate of impact pump, the outstanding post of the left side fixedly connected with of reinforcing plate, the rear portion fixedly connected with docking mechanism of pneumatic cylinder, docking mechanism's top mould post, butt joint mechanism, The material pulling device comprises a reset rod, a groove and a material pulling rod, wherein the reset rod is fixedly connected to the front part of the top die column, the groove is fixedly connected to the upper part of the reset rod, and the material pulling rod is fixedly connected to the front part of the groove.

Preferably, the bottom plate is connected with the fastening column in a clamping manner, and the bottom plate coincides with the central axis of the fixing mechanism.

Preferably, the fixed blocks are tightly attached to the fixed screws, the number of the fixed screws is two, and the fixed screws are symmetrical between the central holes.

Preferably, the inner dimension of the cylinder is matched with the outer dimension of the cylinders, the number of the cylinders is multiple, and the cylinders are symmetrical with the central axis of the auxiliary mechanism.

Preferably, the bolt is connected with the front cover plate through clamping, and the front cover plate is connected with the frame through welding.

Preferably, the snap ring coincides with the central axis of the cap, and the cap is connected with the snap ring through clamping.

Preferably, the storage bin is tightly attached to the partition plate, and the partition plate is connected with the butt joint through welding.

Preferably, the wedge-caulking block is connected with the hydraulic cylinder through clamping, and an angle larger than ninety degrees is formed between the hydraulic cylinder and the butt joint mechanism.

Preferably, the protective shell is connected with the support frame through a clamping, and a limiting groove with the same size is formed between the joint of the protective shell and the impact pump and the reinforcing plate.

Preferably, the center lines of the top mold column and the reset rods are overlapped, the number of the reset rods is two, and the reset rods are symmetrical between the center lines of the grooves.

Has the advantages that:

the invention has the following beneficial effects:

the invention solves the problems that the wedge block is difficult to arrange at the side of the fixed die of the equipment to seal the slide block, the slide block has the phenomenon of retreating, so that the size of a casting is unqualified and continuous production cannot be realized through the mutual matching and the connection of the bottom plate, the fastening column, the fixing mechanism, the cylinder, the auxiliary mechanism, the injection mechanism, the wedge block, the connecting groove and the butting mechanism, ensures the size stability of the product shape with an included angle of more than ninety degrees with the die opening direction on the equipment molding casting, can effectively ensure the size stability of the product shape, reduces the rejection rate of the casting, thereby avoiding the waste and the use of resources, is fixed through the bottom plate, improves the stability of the bottom of the equipment, simultaneously improves the bearing capacity of the bottom of the equipment during the operation, is larger by matching the fastening column for bottom connection, improves the ventilation of the connection, can accelerate the discharge of internal heat, cannot influence the internal mold, and is matched with the fixing mechanism at the front part, the rapid assembling device has the advantages that an operator can conveniently and rapidly install the device for use, the firmness between the components at the bottom is improved by matching the fixing block and the fixing screw, the device is convenient to operate and more stable, the device can be reinforced with the central hole at the middle part, the screw can be reinforced according to the use requirement of the device, the fixing safety effect is achieved, when the device is operated, the die is assembled through the die, the upper groove is butted with the protruded cylinder, the upper groove is clamped with the cylinder at the bottom when the device is butted, the tightness of the joint can be improved, the inside of the device is more compact, the heat inside can be prevented from being dissipated, the internal glue injection is prevented from being leaked out, the firmness of the upper prop can be improved by matching the bolt with the front cover plate for use, the inclination angle of the prop during the operation is convenient for the die assembly of the device above, and the accuracy of the die assembly can be improved by matching the bottom frame, meanwhile, the operation speed and the use efficiency are improved, the connection is carried out through the snap ring and the cap, the protection effect can be carried out inside, the inside can be independently protected, the damage of the internal equipment caused by sudden cold and sudden heat can be prevented, the replacement is needed, the use time and the operation manpower are wasted, meanwhile, the butt joint of the glue injection port is carried out through the connecting port, the tightness of the connecting position can be improved, when the glue injection device is operated, the internal storage bin stores glue, the tightness during the glue injection is improved, no bubble is generated in the mould, meanwhile, the glue is mixed by matching with the inside of the partition plate, the glue is more uniform, the glue injection is more stable, the butt joint is carried out through the wedge blocks, the movable wedge blocks are driven by the hydraulic cylinder, when the mould is closed, the mould core is inserted firstly, the movable wedge blocks are inserted again to seal the slide blocks in the die casting process, when the mould is opened, the movable wedge blocks are firstly extracted and then the core is extracted, thereby realize the process of loosing core, carry out the outside protection through the protecting crust, can play the protection to inside impact pump, avoid receiving the damage, influence its life time, reduce the wasting of resources and use with costs, use through the cooperation of ejector half post and release link, make and form between the part connected and be greater than ninety degrees the angle, can ensure the dimensional stability of mould, reduce the damaged rate of mould.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged view of the fixing mechanism of the present invention;

FIG. 3 is an enlarged view of the structure of the auxiliary mechanism of the present invention;

FIG. 4 is an enlarged view of the injection mechanism of the present invention;

FIG. 5 is an enlarged view of the wedge block structure of the present invention;

FIG. 6 is an enlarged view of the hydraulic cylinder structure of the present invention;

FIG. 7 is an enlarged view of the docking mechanism of the present invention;

fig. 8 is an enlarged view of the structure at a in fig. 1 according to the present invention.

In the figure: 1. a base plate; 2. fastening the column; 3. a fixing mechanism; 301. a fixed block; 302. fixing screws; 303. a central bore; 4. a cylinder; 5. a cylinder; 6. an auxiliary mechanism; 601. a bolt; 602. a front cover plate; 603. a frame; 604. an upper cover plate; 605. a top pillar; 7. a snap ring; 8. capping; 9. a connecting port; 10. an injection mechanism; 1001. a storage bin; 1002. a partition plate; 1003. a butt joint port; 11. a wedging block; 1101. a pillar; 1102. positioning a plate; 1103. connecting grooves; 12. a hydraulic cylinder; 1201. a protective shell; 1202. a support frame; 1203. a percussion pump; 1204. a reinforcing plate; 1205. a protruding post; 13. a docking mechanism; 1301. a top mold column; 1302. a reset lever; 1303. a groove; 1304. and (5) pulling the material rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, a die casting mold structure with an interlocked cylinder for preventing a core from moving backward and a molding method thereof, includes a base plate 1, a fastening post 2 fixedly connected to an upper portion of the base plate 1, a fixing mechanism 3 fixedly connected to a front portion of the fastening post 2, the fixing mechanism 3 including a fixing block 301, a fixing screw 302 and a central hole 303, the fixing screw 302 fixedly connected to a front portion of the fixing block 301, the central hole 303 fixedly connected to a middle portion of the fixing screw 302, a cylinder 4 fixedly connected to an upper portion of the fixing mechanism 3, a cylinder 5 fixedly connected to an upper portion of the cylinder 4, an auxiliary mechanism 6 fixedly connected to a middle portion of the cylinder 5, the auxiliary mechanism 6 including a bolt 601, a front cover plate 602, a frame 603, an upper cover plate 604 and a top post 605, a front cover plate 602 fixedly connected to a rear portion of the bolt 601, a frame 603 fixedly connected to a rear portion of the front cover plate 602, and an upper cover plate 604 fixedly connected to an upper portion of the frame 603, the top pillar 605 is fixedly connected to the upper portion of the upper cover plate 604, the snap ring 7 is fixedly connected to the rear portion of the auxiliary mechanism 6, the cap 8 is fixedly connected to the upper portion of the snap ring 7, the connection port 9 is fixedly connected to the front portion of the cap 8, and the injection mechanism 10 is fixedly connected to the left side of the connection port 9.

The injection mechanism 10 comprises a storage bin 1001, a partition 1002 and a butt joint 1003, the partition 1002 is fixedly connected above the storage bin 1001, the butt joint 1003 is fixedly connected above the partition 1002, a wedge block 11 is fixedly connected on the left side of the injection mechanism 10, the wedge block 11 comprises a support 1101, a positioning plate 1102 and a connecting groove 1103, the positioning plate 1102 is fixedly connected on the right side of the support 1101, the connecting groove 1103 is fixedly connected on the right side of the positioning plate 1102, a hydraulic cylinder 12 is fixedly connected on the left side of the wedge block 11, the hydraulic cylinder 12 comprises a protective shell 1201, a support frame 1202, an impact pump 1203, a reinforcing plate 1204 and a protruding column 1205, the support frame 1202 is fixedly connected on the left side of the protective shell 1201, the impact pump 1203 is fixedly connected in the middle of the support frame 1202, the reinforcing plate 1204 is fixedly connected on the left side of the impact pump 1203, the protruding column 1205 is fixedly connected on the left side of the reinforcing plate 1204, and the butt joint mechanism 13 is fixedly connected on the rear portion of the hydraulic cylinder 12, the docking mechanism 13 comprises a top mold column 1301, a reset rod 1302, a groove 1303 and a material pulling rod 1304, wherein the reset rod 1302 is fixedly connected to the front portion of the top mold column 1301, the groove 1303 is fixedly connected to the upper portion of the reset rod 1302, and the material pulling rod 1304 is fixedly connected to the front portion of the groove 1303.

This embodiment, the block is connected between bottom plate 1 and the fastening post 2, and coincide mutually between bottom plate 1 and fixed establishment 3's the axis, fix through bottom plate 1, the stability of improve equipment bottom, the bearing capacity of bottom is bigger when improve equipment moves simultaneously, cooperation fastening post 2 carries out the bottom and connects, improve the air permeability of junction, can accelerate inside heat discharge, can not receive the influence to inside mould simultaneously, cooperate with anterior fixed establishment 3, make things convenient for the operator to carry out quick erection equipment and use.

This embodiment, closely laminate between fixed block 301 and the fixed screw 302, the quantity of fixed screw 302 is two, and fixed screw 302 is symmetrical between with centre bore 303, use through fixed block 301 and the cooperation of fixed screw 302, fastness between the part of improvement bottom does benefit to equipment simultaneously and operates, and is more stable, consolidates with the centre bore 303 at middle part, can carry out the screw reinforcement according to the user demand of equipment, play fixed insurance effect.

This embodiment, identical between the inside dimension of drum 4 and the outside dimension of cylinder 5, the quantity of cylinder 5 is a plurality of, and cylinder 5 is symmetrical between the axis with complementary unit 6, when carrying out the operation, when carrying out the compound die through the mould, the groove of top docks with outstanding cylinder 5, carry out the block with drum 4 of bottom when carrying out the butt joint, can improve the compactness of junction, make equipment inside inseparabler, can prevent inside heat effluvium, avoid inside injecting glue to ooze simultaneously.

In this embodiment, be connected through the block between bolt 601 and the cowl board 602, and be connected through the welding between cowl board 602 and the frame 603, use through bolt 601 and cowl board 602 cooperation, can improve the fore-set 605 fastness of top, because the angle of fore-set 605 is the tilting when the operation to the equipment of top carries out the compound die, and the frame 603 of cooperation bottom uses and to improve the compound die precision, improves operating speed and availability factor simultaneously.

This embodiment, coincide mutually between the axis of snap ring 7 and block 8, and be connected through the block between block 8 and the snap ring 7, be connected through snap ring 7 and block 8, can carry out the guard action in inside, inside plays solitary protection, prevent that inside equipment from receiving suddenly cold suddenly hot and lead to damaging, need change, extravagant live time and operation manpower use, carry out the butt joint of injecting glue mouth through connector 9 simultaneously, can improve the compactness of junction.

This embodiment, closely laminate between feed bin 1001 and the baffle 1002, and be connected through the welding between baffle 1002 and the interface 1003, when carrying out the operation, inside feed bin 1001 carries out the storage of colloid, compactness when improving the injecting glue makes the inside bubble-free production of mould, cooperates the inside mixture of baffle 1002 simultaneously, makes the colloid more even, and is more stable during the injecting glue.

In this embodiment, be connected through the block between wedging piece 11 and the pneumatic cylinder 12, and constitute between pneumatic cylinder 12 and the docking mechanism 13 and be greater than ninety degrees angle, install the butt joint through wedging piece 11, movable wedging piece 11 is driven by pneumatic cylinder 12, and during the compound die, insert the core earlier, insert movable wedging piece 11 blockade slider again, die-casting process slider can not retreat, during the die sinking, takes out movable wedging piece 11 earlier, looses the core again to realize the process of loosing the core.

In this embodiment, the protective shell 1201 is connected with the supporting frame 1202 through the clamping, a limit groove with the same size and size is formed between the joint of the protective shell 1201 and the impact pump 1203 and the reinforcing plate 1204, external protection is performed through the protective shell 1201, the internal impact pump 1203 can be protected, damage is avoided, the service life time of the pump is prolonged, and resource waste and cost use are reduced.

In this embodiment, the center lines of the top mold pillar 1301 and the reset rod 1302 are overlapped, the number of the reset rod 1302 is two, the reset rod 1302 is symmetrical between the center lines of the grooves 1303, and the top mold pillar 1301 and the reset rod 1302 are matched for use, so that an angle larger than ninety degrees is formed between the connected parts, the dimensional stability of the mold can be guaranteed, and the damage rate of the mold is reduced.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

When using, dock equipment and external equipment, cylinder 4 and cylinder 5 through the top carry out inseparable laminating and be connected, then carry out the firm of bottom through anterior fixed establishment 3, dock interface 1003 and outside injecting glue mouth inside through external equipment simultaneously, internal equipment connects simultaneously, when using, with the inside perpendicular direction of loosing core, install wedging block 11, movable wedging block 11 is driven by the hydro-cylinder, during the compound die, insert the core earlier, insert movable wedging block 11 and block the slider again, die-casting process slider can not retreat, during the die sinking, take out movable wedging block 11 earlier, loose core again, thereby realize the process of loosing core, can accomplish the operation.

In conclusion, the oil cylinder interlocking type die-casting die structure for preventing the core from retreating and the forming method thereof can form a product shape with an included angle of more than ninety degrees with the die opening direction on a casting, can effectively ensure the dimensional stability of the product shape, and reduce the rejection rate of the casting.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.