A core-pulling mold for die-casting of columnar components to prevent strain

Abstract

The present invention discloses a core-pulling, mold-opening and anti-straining mold for die-casting of columnar components, comprising a base arranged on a machine tool, and the front and rear sides of the base are fixedly installed with fixed side molds, and the left and right sides of the base are hingedly installed with movable side molds, and the movable side molds are arranged to match the left and right side edges of the fixed side molds; the bottom of the movable side mold is arranged to match the top of the base, and a foot support is fixedly installed on the bottom outer wall of the movable side mold; it also includes: a mold core piece, which is fixedly installed at the top center position of the base, and the interior of the mold core piece is hollow; a motor assembly, which is fixed to the middle of the rear outer wall of the base, and the output shaft of the motor assembly is installed through the inside of the intake valve. The core-pulling, mold-opening and anti-straining mold for die-casting of columnar components can use the action of a single rotating structure to achieve rapid separation between the mold and the workpiece, and can effectively reduce the damage of taking materials between the mold and the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to a core-pulling mold for die-casting a columnar component to prevent strain. Background Art

[0002] Injection molds are auxiliary shaping accessories for injection molded workpieces. Through the assembly and use of molds, the overall shape of the injection molded workpiece is more stable after shaping, which facilitates the operation of subsequent processing. When the injection molded workpiece is being processed, in order to improve the overall strength of the mold, auxiliary die-casting processing will be carried out through the application of the mold after injection molding, so that its local structural shape maintains high-strength stability.

[0003] However, the existing molds have the following problems when used:

[0004] 1. After the workpiece is die-cast and stabilized, due to the external force load during the die-casting process, the fit between the workpiece and the mold is too high and it is not easy to separate. When separating, additional manual or mechanical assistance is required, resulting in additional use of machinery and manpower, resulting in reduced efficiency when taking materials and increased use costs;

[0005] 2. When completing manual and mechanical assisted material picking and splitting, it is easy for the non-standard material picking operation and the diversity of problems to cause friction scratches and local deformation damage caused by external force material picking and squeezing on the core mold and the workpiece body during material picking, which not only increases the material picking time, but also increases the damage rate of the mold and workpiece.

[0006] In view of the above problems, it is urgent to carry out innovative design based on the original mold. Summary of the invention

[0007] The purpose of the present invention is to provide a core-pulling and anti-straining mold for die-casting of columnar components, so as to solve the problem that the existing mold is difficult to disassemble due to the external force load in the die-casting process, and is prone to friction scratches and local deformation damage caused by external force extrusion during material removal on the core mold and the workpiece body due to the irregular operation of material removal and the diversity of problems.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a core-pulling mold for die-casting of a columnar component to prevent strain, comprising a base arranged on a machine tool, and the front and rear sides of the base are fixedly installed with fixed side molds, and the left and right sides of the base are hingedly installed with movable side molds, and the movable side molds are arranged to coincide with the left and right side edges of the fixed side molds;

[0009] The bottom of the movable side mold is matched with the top of the base, and a foot support is fixedly installed on the outer wall of the bottom of the movable side mold;

[0010] Also includes:

[0011] A core piece is fixedly mounted at the top center of the base, and the core piece is hollow inside, and an air intake valve is embedded and fixed in the middle of the base directly below the core piece, and a turbine blade is rotatably mounted inside the air intake valve;

[0012] A motor assembly is fixed to the middle of the rear outer wall of the base, and the output shaft of the motor assembly is installed through the inside of the intake valve, and a bevel gear is installed between the end of the output shaft of the motor assembly and the end of the vertical center axis of the turbine blade;

[0013] The air outlet pipe is fixedly installed on the base at the side of the air inlet valve, and the upper end of the air outlet pipe is connected with the hollow interior of the mold core member.

[0014] By adopting the above technical solution, the workpiece and the mold can be automatically separated when the workpiece is removed from the mold, which can effectively improve the operating efficiency when removing the material and can also greatly reduce the damage to the mold and the workpiece when removing the material and opening the mold.

[0015] Preferably, the bottom of the movable side mold is arranged as an "L"-shaped structure, and the inner side of the bottom of the movable side mold is in the same horizontal plane as the top of the base, and a liquid storage cavity is arranged inside the left and right sides of the base, and a screw rod is installed through the liquid storage cavity in a bearing-like manner, and at the same time, a liquid sealing plate is threadedly installed on the inner outer wall of the screw rod on the liquid storage cavity.

[0016] By adopting the above technical solution, the oil inside the liquid storage chamber is guided to facilitate the rotation control of the movable side mold. Through the rotation of the movable side mold, the workpiece is pushed by external force, which facilitates the separation of the workpiece and the mold.

[0017] Preferably, two of the liquid storage cavities are symmetrically arranged one by one with respect to the movable side molds about the vertical center axis of the base, and a guide tube is fixed on the outer wall of the movable side mold, and a telescopic part is rotatably installed on the top side of the movable side mold, and a threaded hose is installed between the telescopic part and the guide tube, and between the guide tube and the liquid storage cavity.

[0018] The above technical solution is adopted to facilitate the flow control of the oil in the liquid storage cavity, and the one-to-one corresponding arrangement facilitates the flow guidance of the oil.

[0019] Preferably, the telescopic member is configured as an internal double-chamber structure, and the transverse central axes of the internal double cavities of the telescopic member are collinear and connected on the right side, and a slider is rotatably mounted on the end of the telescopic member;

[0020] The slide block is slidably connected to the slide rail, and the slide rail is fixed on the outer side wall of the fixed side mold, and the slide rail is vertically arranged with the base.

[0021] By adopting the above technical solution, a double-cavity telescopic part is set up. Under the pressure load of the oil, the telescopic movement is utilized to make the slider and the slide rail slide relative to each other, so that the movable side mold opens synchronously to complete the material removal.

[0022] Preferably, a positioning tube is coaxially fixedly installed inside the core part, and a rotating part is movably installed inside the positioning tube, and a bevel gear is meshed between the lower end of the rotating part and the end of the output shaft of the motor assembly, and the lower end of the positioning tube is connected to the interior of the intake valve.

[0023] The adoption of the technical solution facilitates the rotation control of the rotating member and the discharge of the airflow inside the positioning tube.

[0024] Preferably, the rotating member is configured as a "T"-shaped structure, and the rotating member and the positioning tube are configured as a vertically coaxial relative rotation structure, and the "T"-shaped top cross-section of the rotating member is configured as a regular five-pointed star with curved edges, and the "T"-shaped top side of the rotating member is configured as a spiral shape, and the top of the inner side wall of the core member is configured as a hexagonal star with curved edges.

[0025] By adopting the above technical solution, the combined design of the rotating part and the core part adopts the oscillator principle, so that the rotating external force of the rotating part causes the top of the core part to oscillate, and the oscillation effect is used to improve the separation efficiency of the core part and the workpiece.

[0026] Preferably, a positioning plug is movably installed at the top outlet position of the positioning tube, and the bottom outer wall of the positioning plug is arranged as a strip-shaped hollow structure, and an impact rod is fixed on the top outer wall of the positioning plug, and the outer wall of the impact rod and the inner wall of the core mold part are fixed with corresponding impact protrusions, and at the same time, an elastic part is fixed between the bottom of the positioning plug and the inner wall of the core mold part.

[0027] By adopting the above technical solution, when the rotating part rotates, the positioning plug on the positioning tube is lifted and lowered due to the action of air pressure and elastic parts. The reciprocating lifting and lowering of the impact rod and the impact of the bump can achieve the external force vibration effect of the core part, thereby improving the workpiece separation efficiency.

[0028] Preferably, the inner wall of the cross section of the positioning tube and the outer wall of the cross section of the positioning plug are both arranged as rectangular structures, and the positioning plug and the positioning tube form a fitting sliding structure that fits vertically and engages horizontally.

[0029] By adopting the above technical solution, the positioning plug can slide and rise and fall stably, and the impact protrusion on it can impact and collide stably, thereby improving the shock effect.

[0030] Preferably, a worm is installed on the base on the side of the motor assembly in a bearing-like manner, and a chain belt assembly for transmission is installed between the worm and the output shaft of the motor assembly, and the worm is meshingly connected with the worm wheel, and the worm wheel is fixed to the end of the screw.

[0031] By adopting the above technical solution, a single motor can not only drive the turbine blades to rotate and drive the airflow, but also directly drive the rotating parts to rotate, and can also maintain the rotation effect of the screw. By utilizing the one-way transmission between the worm and the worm wheel, the oil is more stable when it is diverted and pressurized.

[0032] Compared with the prior art, the beneficial effects of the present invention are: the core-pulling and mold-opening anti-straining mold for die-casting of the columnar component can utilize the single rotating structure to achieve rapid separation between the mold and the workpiece, and can effectively reduce the damage of taking materials between the mold and the workpiece, and the specific methods are as follows:

[0033] 1. Through the meshing transmission between the bevel teeth, the turbine blades and the rotating parts rotate synchronously when the motor rotates. The rotating parts and their top spiral and "five-pointed star" structures interact with the "six-pointed star" structure of the top inner wall of the core part. When rotating, the top of the core part will impact and vibrate, so that the top of the core part and the workpiece can be quickly separated. At the same time, through the rotation of the turbine blades, it can drive the airflow to move and pressurize, so that the gas is guided to flow into the positioning tube. Through the air pressure of the air flow and the elastic force of the elastic part, the positioning plug and the impact rod on it are reciprocated and lifted. When lifting, the impact bumps collide with each other, so that the core part vibrates as a whole, and can be quickly separated from the workpiece, which is convenient for the workpiece unloading efficiency;

[0034] 2. While the motor drives the above structure to rotate, the motor can drive the meshing transmission between the worm and the worm wheel, so that the screw inside the liquid storage chamber rotates, pushing the oil therein and exerting pressure on it. Under the action of the oil flow and oil pressure, the telescopic part is extended and retracted under the action of the oil pressure, and the telescopic part and the slider rotate with each other, and the slider and the slide rail are engaged and slid, so that the telescopic part can be extended and retracted by pulling the slide rail to achieve the purpose of pulling the movable side mold, thereby rotating the movable side mold. The movable side mold rotates and uses the "L"-shaped structure at the bottom to push the workpiece, making the workpiece more efficient and faster. In summary, the pushing efficiency of the workpiece is increased, and the scratches, wear and deformation of the workpiece and the mold are greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the front structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the internal structure of the base of the present invention;

[0037] Figure 3It is a schematic diagram of the internal structure of the mold core member of the present invention;

[0038] Figure 4 This is a bottom view of the structure of the positioning plug of the present invention;

[0039] Figure 5 It is a schematic diagram of the top cross-sectional structure of the rotating member of the present invention;

[0040] Figure 6 This is a schematic diagram of the worm installation structure of the present invention;

[0041] Figure 7 This is a schematic diagram of the installation structure of the telescopic member of the present invention;

[0042] Figure 8 It is a schematic diagram of the structure of the telescopic member of the present invention.

[0043] In the figure: 1. base; 2. fixed side mold; 3. movable side mold; 301. liquid storage chamber; 302. screw; 303. liquid sealing plate; 304. guide pipe; 305. telescopic part; 306. threaded hose; 307. slider; 308. slide rail; 4. foot support; 5. mold core part; 6. intake valve; 7. turbine blade; 701. positioning tube; 702. rotating part; 703. bevel gear; 704. positioning plug; 705. impact rod; 8. motor assembly; 801. worm; 802. worm wheel; 9. exhaust pipe. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figure 1-8 The present invention provides a technical solution: a core-pulling and mold-opening anti-straining mold for die-casting of a columnar component, comprising a base 1 arranged on a machine tool, and the front and rear sides of the base 1 are fixedly installed with fixed side molds 2, and both sides of the left side of the base 1 are hingedly installed with movable side molds 3, and the movable side molds 3 are arranged to coincide with the left and right side edges of the fixed side molds 2, and the movable movable side molds 3 are arranged, which can facilitate the subsequent separation of workpieces through the hinged rotation effect;

[0046] Use Figure 1 and Figure 6-8In the technical solution shown, the bottom of the movable side mold 3 is matched with the top of the base 1, and a foot support 4 is fixedly installed on the outer wall of the bottom of the movable side mold 3, so that after the movable side mold 3 is positioned and stabilized, the foot support 4 supports its bottom, so that the movable side mold 3 and the base 1 are stably assembled, and the die-casting molding effect of the workpiece is not affected; the bottom of the movable side mold 3 is set to an "L"-shaped structure, and the inner side of the bottom of the movable side mold 3 is on the same horizontal plane as the top of the base 1, so that when the movable side mold 3 rotates, its "L"-shaped structure acts like a lever to push the workpiece The bottom edge of the workpiece makes it easier to unload the workpiece when it is pushed, and a liquid storage chamber 301 is arranged inside the left and right sides of the base 1, and a screw rod 302 is installed in the liquid storage chamber 301 in a bearing-like manner, and the screw rod 302 is located on the inner outer wall of the liquid storage chamber 301 and a liquid sealing plate 303 is threadedly installed thereon. Through the rotation of the screw rod 302 and the assembly of the liquid sealing plate 303 thereon, the liquid sealing plate 303 is moved and changed in position, which can push the internal oil of the liquid storage chamber 301 and change the oil guide. The liquid sealing plate 303 is set to a rectangular shape and can only move horizontally in the liquid storage chamber 301. The liquid storage chamber 301 and the movable side mold 3 are symmetrically arranged about the vertical center axis of the base 1, and the liquid storage chamber 301 and the movable side mold 3 are arranged correspondingly, so that the liquid storage chamber 301 can control the rotation of the corresponding movable side mold 3 when the internal oil is pressurized and circulated, and a guide tube 304 is fixed on the outer wall of the movable side mold 3, and a telescopic member 305 is rotatably installed on the top side of the movable side mold 3, and a threaded hose 306 is installed between the telescopic member 305 and the guide tube 304, and between the guide tube 304 and the liquid storage chamber 301, and the guide tube 304 and the threaded hose 306 are installed. The corrugated hose 306 realizes the flow of oil between the liquid storage chamber 301 and the telescopic member 305, and the telescopic member 305 is set as an internal double-chamber structure, and the horizontal central axes of the double chambers of the telescopic member 305 are collinear and connected on the right side, and a slider 307 is rotatably installed at the end of the telescopic member 305, so that when the oil in the liquid storage chamber 301 is pressurized and introduced into the telescopic member 305, the telescopic member 305 can contract, and vice versa, when the liquid storage chamber 301 is pressurized to suck the oil from the inside of the telescopic member 305, the telescopic member 305 can extend, changing the position of the slider 307;

[0047] The slider 307 is slidably connected to the slide rail 308, and the slide rail 308 is fixed on the outer wall of the fixed side mold 2, and the slide rail 308 is vertically arranged with the base 1. By utilizing the hinged rotation between the slider 307 and the telescopic member 305, and the sliding between the slide rail 308 and the slider 307, when the oil in the liquid storage chamber 301 is pressurized and introduced into the telescopic member 305, the telescopic member 305 contracts, and the slider 307 pulls the slide rail 308 to realize the rotation of the movable side mold 3 toward the fixed side mold 2, and the two are assembled in a matching manner, otherwise the movable side mold 3 is away from the fixed side mold 2, so as to realize the material removal of the workpiece;

[0048] Use Figure 1-5In the technical solution shown, the core piece 5 is fixedly installed at the top center position of the base 1, and the interior of the core piece 5 is hollow, and an air intake valve 6 is embedded and fixed in the middle of the base 1 directly below the core piece 5, and a turbine blade 7 is rotatably installed inside the air intake valve 6; the motor assembly 8 is fixed to the middle of the rear outer wall of the base 1, and the output shaft of the motor assembly 8 is installed through the inside of the air intake valve 6, and a bevel gear 703 is meshed between the end of the output shaft of the motor assembly 8 and the end of the vertical center axis of the turbine blade 7, so that when the motor assembly 8 rotates, it can drive the turbine blade 7 to rotate, so that the airflow is pressurized and introduced into the positioning tube 701 inside the core piece 5;

[0049] The core part 5 is coaxially fixedly installed with a positioning tube 701, and a rotating member 702 is movably installed inside the positioning tube 701, and a bevel gear 703 is meshed between the lower end of the rotating member 702 and the end of the output shaft of the motor assembly 8, and the lower end of the positioning tube 701 is connected to the inside of the intake valve 6. When the motor assembly 8 is started, the air flow is pressurized and introduced into the positioning tube 701 inside the core part 5. At the same time, the meshing between the bevel gears 703 can also effectively drive the rotating member 702 to rotate, providing power for the rotation of the rotating member 702. The rotating member 702 is set to a "T"-shaped structure, and the rotating member 702 and the positioning tube 7 01 is configured as a vertically coaxial relative rotation structure, and the "T"-shaped top cross-section of the rotating member 702 is configured as a regular five-pointed star with a curved edge, and the "T"-shaped top side of the rotating member 702 is configured as a spiral, and the top of the inner side wall of the core member 5 is configured as a six-pointed star with a curved edge. The combined structure between the rotating member 702 and the core member 5 is configured so that when the rotating member 702 is continuously rotated due to the motor drive, the spiral "five-pointed star" structure on the top of the rotating member 702 and the "six-pointed star" on the core member 5 interact with each other, so that the top of the rotating member 702 causes continuous collision and oscillation of the top inner wall of the core member 5, causing the core member 5 to collide with each other. The top of the positioning tube 701 oscillates, and the oscillation effect is utilized to improve the separation efficiency of the core piece 5 and the workpiece. A positioning plug 704 is movably installed at the top outlet position of the positioning tube 701, and the bottom outer wall of the positioning plug 704 is set as a strip-shaped hollow structure, and a collision rod 705 is fixed on the top outer wall of the positioning plug 704, and the outer wall of the collision rod 705 and the inner side wall of the core piece 5 are fixed with a one-to-one corresponding collision convex block, and an elastic member is fixed between the bottom of the positioning plug 704 and the inner side wall of the core piece 5. The setting of this structure enables the positioning plug 704 to be moved under the action of air pressure and the elastic member when the air pressure airflow is introduced into the interior of the positioning tube 701 due to the rotation of the turbine blade 7. Under the synchronous action of, the positioning plug 704 drives the impact rod 705 thereon to rise and fall back and forth, so that the impact rod 705 and the impact protrusion on the mold core piece 5 repeatedly collide, causing the overall vibration of the mold core piece 5, and comprehensively improving the blanking efficiency of the workpiece, and the cross-sectional inner wall of the positioning tube 701 and the cross-sectional outer wall of the positioning plug 704 are both set to a rectangular structure, and the positioning plug 704 and the positioning tube 701 form a fitting sliding structure that fits vertically and fits horizontally. The combined structural setting of the positioning plug 704 and the positioning tube 701 enables the positioning plug 704 to only perform stable vertical lifting and lowering, and will not cause the impact rod 705 and the impact protrusion on the mold core piece 5 to be misaligned;

[0050] Use Figure 1 and Figure 6In the technical solution shown, the air outlet pipe 9 is fixedly mounted on the base 1 on the side of the air inlet valve 6, and the upper end of the air outlet pipe 9 is connected with the hollow interior of the mold core 5, and the air outlet pipe 9 completes the discharge of the gas inside the turbine blade 7 into the positioning tube 701, and the base 1 on the side of the motor assembly 8 is installed with a worm 801 in a bearing-type through-through manner, and a chain belt assembly for transmission is installed between the worm 801 and the output shaft of the motor assembly 8, and the worm 801 is meshed and connected with the worm wheel 802, and the worm wheel 802 is fixed to the screw rod 30. 2, so that when the motor assembly 8 is working, its single rotation directly drives the rotation of the turbine blades 7 and the rotating member 702, so that the mold core member 5 vibrates to improve the separation efficiency between it and the workpiece. At the same time, the motor assembly 8 can also drive the unidirectional transmission of the worm 801 and the worm wheel 802, control the rotation of the screw 302, thereby controlling the oil pressure diversion between the liquid storage chamber 301 and the telescopic member 305, so that the flipping of the movable side mold 3 is also synchronously controlled with the rotation of the motor, completing the efficient material removal of the workpiece and improving the efficiency of material removal.

[0051] Working principle: When using the core-pulling and mold-opening anti-straining mold for die-casting of the columnar component, first, when taking the workpiece, the rotation of the motor assembly 8 is controlled, and its rotation can drive the synchronous rotation of the turbine blades 7 and the rotating member 702 through the meshing between the bevel teeth 703. The turbine blades 7 allow the air pressure to be introduced into the positioning tube 701. Under the action of the air pressure and the elastic member, the positioning plug 704 and the structure thereon are lifted and lowered, resulting in collisions between the impact bumps, and the rotation of the rotating member 702 and the inner wall structure of the core member 5. The collision between the two causes the core member 5 to vibrate as a whole, causing it to separate quickly from the workpiece, and the motor assembly 8 also drives the unidirectional transmission between the worm 801 and the worm wheel 802, causing the screw 302 to rotate, changing the position of the liquid sealing plate 303 thereon, causing the oil between the liquid storage chamber 301 and the telescopic member 305 to be pressurized and diverted. By controlling the telescopic movement of the telescopic member 305 and the sliding between the slider 307 and the slide rail 308, the purpose of controlling the flipping movement of the movable side mold 3 is achieved, thereby completing the rapid separation between the workpiece and the mold and improving the material removal efficiency.

[0052] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A core-pulling mold opening and anti-straining mold for die-casting of a columnar component, comprising a base (1) arranged on a machine tool, wherein fixed side molds (2) are fixedly installed on the front and rear sides of the base (1), and movable side molds (3) are hingedly installed on the left and right sides of the base (1), and the movable side molds (3) are arranged to coincide with the left and right side edges of the fixed side mold (2); The bottom of the movable side mold (3) is arranged to fit in with the top of the base (1), and a foot support (4) is fixedly mounted on the outer wall of the bottom of the movable side mold (3); It is characterized in that Also includes: A core piece (5) is fixedly mounted at the top center position of the base (1), and the interior of the core piece (5) is hollow, and an air intake valve (6) is embedded and fixed in the middle of the base (1) directly below the core piece (5), and a turbine blade (7) is rotatably mounted inside the air intake valve (6); A motor assembly (8) is fixed to the middle portion of the rear outer wall of the base (1), and an output shaft of the motor assembly (8) is installed through the interior of the air intake valve (6), and a bevel gear (703) is installed between the end of the output shaft of the motor assembly (8) and the end of the vertical center axis of the turbine blade (7); An air outlet pipe (9) is fixedly mounted on the base (1) on the side of the air inlet valve (6), and the upper end of the air outlet pipe (9) is connected to the hollow interior of the mold core member (5); The left and right sides of the base (1) are provided with liquid storage chambers (301), and a screw rod (302) is installed in the liquid storage chamber (301) in a bearing-like manner, and a liquid sealing plate (303) is threadedly installed on the inner outer wall of the screw rod (302) located in the liquid storage chamber (301); two of the liquid storage chambers (301) are symmetrically arranged about the vertical center axis of the base (1) in a one-to-one correspondence with the movable side molds (3), and a guide pipe (304) is fixed on the outer side wall of the movable side mold (3). ), and a telescopic member (305) is rotatably mounted on the top side of the movable side mold (3), and a threaded hose (306) is installed between the telescopic member (305) and the guide tube (304), and between the guide tube (304) and the liquid storage chamber (301); the telescopic member (305) is configured as an internal double-chamber structure, and the transverse central axes of the internal double cavities of the telescopic member (305) are collinear and connected on the right side, and a slider (307) is rotatably mounted on the end of the telescopic member (305); The slider (307) is slidably connected to the slide rail (308), the slide rail (308) is fixed on the outer side wall of the fixed side mold (2), and the slide rail (308) is vertically arranged with the base (1).

2. The core-pulling and mold-opening anti-straining mold for die-casting of columnar components according to claim 1, characterized in that: The bottom of the movable side mold (3) is arranged in an "L"-shaped structure, and the inner side of the bottom of the movable side mold (3) is in the same horizontal plane as the top of the base (1).

3. The core-pulling and mold-opening anti-straining mold for die-casting of columnar components according to claim 1, characterized in that: A positioning tube (701) is coaxially fixedly installed inside the mold core (5), and a rotating member (702) is movably installed inside the positioning tube (701), and a bevel gear (703) is meshed between the lower end of the rotating member (702) and the end of the output shaft of the motor assembly (8), and the lower end of the positioning tube (701) is connected to the inside of the air intake valve (6).

4. The core-pulling and mold-opening anti-straining mold for die-casting of columnar components according to claim 3, characterized in that: The rotating member (702) is configured as a "T"-shaped structure, and the rotating member (702) and the positioning tube (701) are configured as a vertically coaxial relative rotation structure, and the "T"-shaped top cross-section of the rotating member (702) is configured as a regular five-pointed star with a curved edge, and the "T"-shaped top side of the rotating member (702) is configured as a spiral, and the top of the inner side wall of the core member (5) is configured as a six-pointed star with a curved edge.

5. The core-pulling and mold-opening anti-straining mold for die-casting of columnar components according to claim 3, characterized in that: A positioning plug (704) is movably installed at the top outlet position of the positioning tube (701), and the bottom outer wall of the positioning plug (704) is arranged as a strip-shaped hollow structure, and an impact rod (705) is fixed on the top outer wall of the positioning plug (704), and the outer wall of the impact rod (705) and the inner wall of the mold core member (5) are fixed with corresponding impact protrusions, and an elastic member is fixed between the bottom of the positioning plug (704) and the inner wall of the mold core member (5).

6. The core-pulling and mold-opening anti-straining mold for die-casting of columnar components according to claim 4, characterized in that: The inner wall of the cross section of the positioning tube (701) and the outer wall of the cross section of the positioning plug (704) are both arranged to be rectangular structures, and the positioning plug (704) and the positioning tube (701) form a fitting sliding structure that fits vertically and engages horizontally.

7. The core-pulling and mold-opening anti-straining mold for die-casting of columnar components according to claim 1, characterized in that: A worm (801) is installed in a bearing-type manner on the base (1) on the side of the motor assembly (8), and a chain belt assembly for transmission is installed between the worm (801) and the output shaft of the motor assembly (8), and the worm (801) is meshedly connected with a worm wheel (802), and the worm wheel (802) is fixed to the end of the screw rod (302).

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