Single cylinder driven double lever automatic demoulding mechanism and filter plate handle injection mold

Abstract

The present invention discloses a single-cylinder driven double-lever automatic demoulding mechanism and a filter plate handle injection mold; the demoulding mechanism includes a core-pulling cylinder, a mechanism assembly plate, a three-slide body, a multifunctional slider, a linkage lever, a horizontal core-pulling connecting rod, a cylindrical core insert, an insert base, and a trapezoidal insert; the key points of the innovative solution are: (1) the simplified design makes the double core-pulling sharing a core-pulling cylinder structure simple; (2) the minimized design makes the multifunctional slider and the core-pulling connecting rod share an integral three-slide, and the overall structure of the mold is compact; (3) the modular design makes the assembly of each molding core convenient and the relative position accurate; (4) the optimized design sets a double linkage lever to optimize the transmission structure and scientifically realize the horizontal core-pulling vertical ejection demoulding. The filter plate handle injection mold, using this demoulding mechanism, solves the technical problems of the existing automatic demoulding mechanism with a complex and non-compact structure, large space occupation, high energy consumption of the double cylinder, and high production cost; the mechanism is streamlined, energy-saving, cost-reducing and efficiency-enhancing.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic demoulding injection molding dies and relates to an automatic demoulding mechanism of an injection molding die for a filter plate handle. Background Art

[0002] Injection molding is a method for producing industrial products; molding injection molding is a method for injection molding products without processing; injection molds are molds and tools for producing the required products using the injection molding method; filter plate handle injection molding mold is an injection mold for producing process-free filter plate handles, and its demolding methods include manual demolding mode and automatic demolding mode; the manual demolding handle injection mold is mainly composed of an upper mold (movable mold), a lower mold (fixed mold), and movable inserts; the automatic demolding handle injection mold is mainly composed of an upper mold, a combined lower mold, an ejection device, and an automatic core-pulling demolding mechanism; the automatic core-pulling demolding mechanism is a double hydraulic cylinder push-pull automatic core-pulling demolding mechanism.

[0003] The filter plate handle, i.e. the polypropylene filter plate support handle of the filter press, has a guide groove and double mounting holes that match the positioning guide rail. When the filter plate handle is injection molded, its double mounting holes need to be pulled out in the horizontal direction and then ejected from the mold in the vertical direction. The filter plate handle is a common component for the filter plate and the plate pulling mechanism, and has two major functions: load-bearing and sliding: (1) The filter plate handle supports the filter plate to be arranged on the guide rail on the main beam of the filter press, and the filter plate is pressed by the oil cylinder, and the concave part (cavity part) of the adjacent filter plate with the filter cloth clamped forms a filter chamber; (2) The plate pulling mechanism slides the filter plate apart through the filter plate handle to achieve gravity cake unloading.

[0004] The existing demoulding methods of handle injection molds have the following defects: (1) Manual demoulding method: when opening the mold, the space of the injection molding equipment is narrow and the environment is high temperature. Manual core pulling (separating the filter plate handle and the movable insert) is labor-intensive and easily damages the filter plate handle and the movable insert, affecting the service life of the mold; (2) Automatic demoulding method: dual hydraulic cylinder push-pull automatic core pulling demoulding, which has a complex and non-compact structure and occupies a large space. It is not suitable for narrow injection molding equipment (it appears very crowded in the narrow injection molding equipment). The dual cylinders have high energy consumption and high production costs. This is a technical problem that people have always been eager to solve but have never succeeded in solving. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects of the existing double-cylinder push-pull automatic demoulding mechanism, solve the technical problems that the automatic demoulding mechanism has a complex and non-compact structure, occupies a large space, is not suitable for narrow injection molding equipment, has high energy consumption of the double cylinders, and has a high production cost, and provide a single-cylinder driven double-lever automatic demoulding mechanism and a filter plate handle injection mold; the corresponding filter plate handle injection mold refers to the filter plate handle injection molding mold with the single-cylinder driven double-lever automatic demoulding mechanism of the present invention, and is abbreviated due to the limited number of words in the patent name.

[0006] The innovative technical solution adopted by the present invention to solve the existing technical problems is: a single-cylinder driven double-lever automatic demoulding mechanism (hereinafter referred to as: automatic demoulding mechanism or automatic core-pulling mechanism), including a core-pulling cylinder, a mechanism assembly plate, a three-slide body, a multi-functional slider, a linkage lever, a horizontal core-pulling connecting rod, a cylindrical core insert, an insert base, and a trapezoidal insert; the key points of the overall technical solution are that the innovative overall structure has outstanding substantial features compared with the existing technology in the following aspects: (1) Minimized design: the existing double-cylinder push-pull automatic demoulding mechanism is improved to a single-cylinder driven double-lever automatic demoulding mechanism, and the double core pulls share one core-pulling cylinder, which is simple in structure, saves one driving cylinder, and effectively reduces the manufacturing cost; (2) Minimized design: the existing split slide is improved to an integral three-slide body, that is, an integral three-slide shared by the multi-functional slider and the core-pulling connecting rod. The mold's overall dimensions are effectively reduced, and the mold's overall structure is compact, adapting to narrow injection molding equipment; (3) Modular design: Innovative modular structure of the molding core enables the multifunctional slider, trapezoidal insert, cylindrical core insert, and insert base to be assembled into a whole for easy assembly; fixed core installation ensures accurate relative positions of each molded part, ensuring product quality; (4) Optimized design: A double linkage lever is set to optimize the transmission structure - the cylinder piston rod is connected to the multifunctional slider, and the two ends of the linkage lever are respectively connected to the multifunctional slider and the core-pulling connecting rod. The demoulding cylinder drives the multifunctional slider to slide up and down, and the double linkage lever can drive the double core-pulling connecting rod to slide up and down, thereby realizing horizontal core pulling and vertical ejection demoulding; thereby, the technical problems of the automatic demoulding mechanism being complex and non-compact in structure, occupying a large space, not adapting to narrow injection molding equipment, high energy consumption of the double cylinder, and high production cost are solved.

[0007] The specific design scheme is: the core-pulling cylinder is a hydraulic cylinder, including a cylinder barrel, a cylinder head, a cylinder piston rod, a piston, a guide sleeve, and a buffer device; the mechanism assembly plate is a rectangular assembly plate, with a cylinder piston rod hole in the middle, and its length corresponds to the length of the lower mold body; the three-slide body has a slider slide in the middle that cooperates with the multifunctional slider, and double-link slides at both ends that cooperate with the core-pulling connecting rod, and a linkage lever mounting hole (i.e., a lever fulcrum) is provided on the convex block between the slider slide and the connecting rod slide; the multifunctional slider is a boot-shaped slider with a plurality of movable connections to the cylinder piston rod and the linkage lever, and a fixed installation trapezoidal insert. function, and its length corresponds to the width of the slider slide; the linkage lever has a mounting hole in the middle and movable connecting long holes at both ends; the horizontal core-pulling connecting rod has its upper end matched with the connecting rod slide, and its lower end connecting structure matches with the insert base; the cylindrical core insert is the cylindrical core insert of the filter plate handle mounting hole, and its length corresponds to the length of the filter plate handle, and the spacing between the double cylindrical core inserts corresponds to the spacing between the double mounting holes of the filter plate handle; the insert base has a connecting structure corresponding to the lower end structure of the core-pulling connecting rod; the trapezoidal insert is a handle weight-reducing trapezoidal insert, which corresponds to the structure of the concave mounting surface (end face with mounting hole) of the filter plate handle.

[0008] The connection relationship of the main components is as follows: (1) Assembly of the automatic demoulding mechanism: the three-slide body is installed under the mechanism assembly plate; the multifunctional slider is installed in the slider slide, and the trapezoidal insert is installed under the multifunctional slider; the upper end of the horizontal core-pulling connecting rod is installed in the connecting rod slide, the insert base is installed at the lower end of the horizontal core-pulling connecting rod, and the cylindrical core insert is installed on the insert base; the linkage lever is installed on the protrusion of the three-slide body and movably connects the multifunctional slider and the horizontal core-pulling connecting rod; the core-pulling cylinder is installed on the mechanism assembly plate, and the cylinder piston rod is movably connected to the multifunctional slider; (2) Assembly of the automatic demoulding mechanism and the handle injection mold: the automatic demoulding mechanism is placed on the lower mold body as a whole, and the three-slide body is located at the corresponding position outside the lower mold body; the cylinder piston rod is extended and retracted to make the multifunctional slider and the horizontal core-pulling connecting rod slide toward each other, the cylinder piston rod extends to automatically load the core (place the cylindrical core insert), and the cylinder piston rod retracts to automatically pull the core (extract the cylindrical core insert).

[0009] The present invention also provides a filter plate handle injection mold, that is, an automatic demoulding filter plate handle injection molding mold, which uses the single-cylinder-driven double-lever automatic demoulding mechanism provided by the present invention; the filter plate handle injection mold mainly consists of an upper mold and its pouring system, a combined lower mold, an automatic core pulling mechanism, an automatic ejection device, and a built-in cooling system, and the main material is mold steel; it is used in conjunction with automatic injection molding equipment and has the function of automatically injection molding processing-free filter press filter plate handles.

[0010] The single-cylinder driven double-lever automatic demoulding mechanism and filter plate handle injection mold provided by the present invention have the advantages of energy saving due to the shared core-pulling cylinder, simple and compact overall structure, convenient modular assembly, fixed and precise core loading, lever-linked automatic core pulling, and automatic ejection handle; the beneficial effects are: (1) through the most simplified design, the double core-pulling cylinder shares a simple structure, which effectively reduces the manufacturing cost; (2) through the minimized design: the multifunctional slider and the core-pulling connecting rod share the integral three-slide, the overall structure of the mold is compact, and it is suitable for narrow injection molding equipment; (3) through the modular design, the assembly of each molding core is convenient and the relative position is accurate, ensuring product quality; (4) through the optimized design: the double-linked lever is set to optimize the transmission structure, and the horizontal core pulling and vertical ejection demoulding are scientifically realized; the mechanism is streamlined, energy saving, cost reduction and efficiency improvement are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a three-dimensional schematic diagram of the single-cylinder driven double-lever automatic demoulding mechanism of the present invention.

[0012] Figure 2 It is a three-dimensional schematic diagram of the three-slide body of the single-cylinder driven double-lever automatic demoulding mechanism of the present invention.

[0013] Figure 3 This is a three-dimensional schematic diagram of the assembly of the combined lower mold and automatic demoulding mechanism of the filter plate handle injection mold of the present invention.

[0014] Figure 4 This is a three-dimensional schematic diagram of the upper mold of the injection mold for the filter plate handle of the present invention.

[0015] Figure 5 This is a three-dimensional schematic diagram of a filter plate handle injection molded by the filter plate handle injection mold of the present invention.

[0016] Figure markings: 1-core-pulling cylinder, 2-mechanism assembly plate, 3-three-slide body, 4-cylinder piston rod, 5-multi-function slider, 6-linkage lever, 7-horizontal core-pulling connecting rod, 8-cylindrical core insert, 9-insert base, 10-lower mold body, 11-vertical ejector column, 12-ejector device seat, 13-lower mold base side wall, 14-positioning protrusion, 15-trapezoidal insert, 16-upper mold body, 17-positioning groove, 18-injection feed port, 19-molded filter plate handle (abbreviated as: filter plate handle), 20-slider slide, 21-connecting rod slide, 22-lever mounting hole (i.e., lever fulcrum). DETAILED DESCRIPTION

[0017] The following describes the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings of the embodiments of the present invention, which illustrate only some preferred embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other non-inventive embodiments made by those skilled in the art, such as automatic demolding mechanisms for filter plate handles with the same lever-driven core-pulling mechanism and similar structure, fall within the scope of protection of the present invention.

[0018] Example 1

[0019] A single-cylinder driven double-lever automatic demoulding mechanism (abbreviated as: automatic demoulding mechanism or automatic core-pulling mechanism) includes a core-pulling cylinder 1, a mechanism assembly plate 2, a three-slide body 3, a multifunctional slider 5, a linkage lever 6, a horizontal core-pulling connecting rod 7, a cylindrical core insert 8, an insert base 9, and a trapezoidal insert 15. The key points of the innovative overall implementation plan are: (1) Minimized design: the existing double-cylinder push-pull automatic demoulding mechanism is improved to a single-cylinder driven double-lever automatic demoulding mechanism. The double core-pulling mechanisms share one core-pulling cylinder 1, which has a simple structure, saves one driving cylinder, and effectively reduces the manufacturing cost; (2) Minimized design: the existing split slide is improved to an integral three-slide body 3, that is, an integral three-slide shared by the multifunctional slider 5 and the horizontal core-pulling connecting rod 7. The mold's overall dimensions are effectively reduced, and the mold's overall structure is compact, adapting to narrow injection molding equipment; (3) Modular design: Innovative modular structure of molding parts enables the multifunctional slider 5, trapezoidal insert 15, cylindrical core insert 8, and insert base 9 to be assembled into a whole after modularization, which is convenient for assembly; fixed core installation enables the relative position of each molding mold core to be accurate, ensuring product quality; (4) Optimized design: A double linkage lever 6 is set to optimize the transmission structure - the cylinder piston rod 4 is connected to the multifunctional slider 5, and the two ends of the linkage lever 6 are respectively connected to the multifunctional slider 5 and the horizontal core pulling connecting rod 7. The core pulling cylinder 1 drives the multifunctional slider 5 to slide up and down, which can make the double linkage lever 6 drive the double core pulling connecting rod 7 to slide up and down, thereby realizing the horizontal core pulling and vertical ejection demoulding; the detailed description is as follows.

[0020] The core-pulling cylinder 1 is a hydraulic cylinder, comprising a cylinder barrel, a cylinder head, a cylinder piston rod 4, a piston, a guide sleeve, and a buffer device; the core-pulling cylinder 1 is mounted on a mechanism assembly plate 2, and the cylinder piston rod 4 is movably connected to a multifunctional slider 5; it is used to drive the multifunctional slider 5 and the horizontal core-pulling connecting rod 7, so that the horizontally lying trapezoidal insert 15 and the double cylindrical core insert 8 mold core are automatically pulled out.

[0021] The mechanism assembly plate 2 is a rectangular assembly plate with 4 holes for the cylinder piston rod in the middle, the length of which corresponds to the length of the lower mold body 10; the three-slide body 3 is installed under the mechanism assembly plate 2, and the core-pulling cylinder 1 is installed on the mechanism assembly plate 2, which is used to assemble the automatic demoulding mechanism into a whole.

[0022] The three-slide body 3 has a slider slide 20 in the middle that cooperates with the multifunctional slider 5, and has double connecting rod slides 21 at both ends that cooperate with the horizontal core-pulling connecting rod 7. The protrusion between the slider slide 20 and the connecting rod slide 21 has a linkage lever mounting hole 22; the three-slide body 3 is installed under the mechanism assembly plate 2, at the corresponding position outside the lower mold body 10; it serves as an upper and lower slide for the multifunctional slider 5 and the double horizontal core-pulling connecting rod 7, and provides a linkage lever fulcrum 22.

[0023] The multifunctional slider 5 is a boot-shaped slider having multiple functions including movably connecting the cylinder piston rod 4 and the linkage lever 6, and fixing and installing the trapezoidal insert 15. Its length corresponds to the width of the slider slide 20. The multifunctional slider 5 is installed in the slider slide 20, and the trapezoidal insert 15 is installed under the multifunctional slider 5. It is used to transmit the telescopic force of the core-pulling cylinder 1 to enable the trapezoidal insert 15 to be cored and core-pulled, and to transmit the linkage lever 6 to drive the double-horizontal core-pulling connecting rod 7 to slide up and down to enable the cylindrical core insert 8 to be cored and core-pulled.

[0024] The linkage lever 6 has a mounting hole in the middle and movable connecting long holes at both ends; the linkage lever 6 is installed on the protrusion of the three-slide body 3 and is movably connected to the multifunctional slider 5 and the horizontal core-pulling connecting rod 7; it can rotate with the sliding of the multifunctional slider 5, and is used to drive the double horizontal core-pulling connecting rod 7 to slide up and down, so that the cylindrical core insert 8 can be loaded and pulled.

[0025] The upper end of the horizontal core-pulling connecting rod 7 cooperates with the connecting rod slide 21, and the lower end connecting structure cooperates with the insert base 9; the upper end of the horizontal core-pulling connecting rod 7 is installed in the connecting rod slide 21 and is movably connected to the linkage lever 6, and the insert base 9 is installed at the lower end of the horizontal core-pulling connecting rod 7; it is used to movably connect the linkage lever 6 and fixedly connect the insert base 9, and can slide up and down in the connecting rod slide 21 under the drive of the linkage lever 6, so that the cylindrical core insert 8 can be loaded and pulled.

[0026] The cylindrical core insert 8 is a cylindrical core insert 8 for the mounting hole of the filter plate handle 19. Its length corresponds to the length of the filter plate handle 19, and the spacing between the double cylindrical core inserts 8 corresponds to the spacing between the double mounting holes of the filter plate handle 19; the cylindrical core insert 8 is installed on the insert base 9; and is used for the horizontal mold core of the installation hole of the filter plate handle 19 for injection molding.

[0027] The insert base 9 has a connection structure corresponding to the lower end structure of the horizontal core-pulling connecting rod 7; the insert base 9 is installed at the lower end of the horizontal core-pulling connecting rod 7, and the cylindrical core insert 8 is installed on the insert base 9; it is used to connect the horizontal core-pulling connecting rod 7 and fix the cylindrical core insert 8.

[0028] The trapezoidal insert 15 is a trapezoidal insert for reducing the weight of the handle, and corresponds to the structure of the concave mounting surface (end surface with mounting holes) of the filter plate handle 19; the trapezoidal insert 15 is installed under the multifunctional slider 5; the horizontal mold core used for injection molding the concave mounting surface (end surface with mounting holes) of the filter plate handle 19 is used to reduce the weight of the handle.

[0029] Assembly of the automatic demoulding mechanism and the handle injection mold: the automatic demoulding mechanism is placed horizontally on the lower mold body 10 as a whole, and the three-slide body 3 is located at the corresponding position outside the lower mold body 10; the cylinder piston rod 4 can be extended and retracted to make the multi-functional slider 5 and the horizontal core-pulling connecting rod 7 slide toward each other, and the cylinder piston rod 4 extends to automatically load the core (place the cylindrical core insert 8), and the cylinder piston rod 4 contracts to automatically pull the core (pull out the cylindrical core insert 8).

[0030] The single-cylinder driven double-lever automatic demoulding mechanism provided by the present invention has the advantages of energy saving due to shared core-pulling cylinders, simple and compact overall structure, convenient modular assembly, fixed and precise core installation, automatic core pulling through lever linkage, and automatic ejection handle; it solves the technical problems of the automatic demoulding mechanism having a complex and non-compact structure, occupying a large space, not being suitable for narrow injection molding equipment, high energy consumption of the double cylinders, and high production costs; it also has a streamlined structure, saves energy, reduces costs, and increases efficiency.

[0031] Example 2

[0032] A filter plate handle injection mold, namely an automatic demoulding filter plate handle injection molding mold, uses the single-cylinder driven double-lever automatic demoulding mechanism (abbreviated as: automatic demoulding mechanism or automatic core pulling mechanism) provided by the present invention; the filter plate handle injection mold mainly consists of a mold base, an upper mold and its pouring system, a combined lower mold, an automatic core pulling mechanism, an automatic ejection device, and a built-in cooling system, and the main material is mold steel; it is used in conjunction with automatic injection molding equipment and has the function of automatically injection molding a filter press filter plate handle 19 that does not require processing.

[0033] The upper mold is an integral upper mold corresponding to the filter plate handle 19 , including an upper mold body 16 , a positioning groove 17 , a pouring system and an injection molding feed port 18 .

[0034] The combined lower mold is a modular combined lower mold corresponding to the filter plate handle 19, including a lower mold body 10 and its lower sliding track, positioning protrusions 14, various vertical molding cores (inserts) and side cores.

[0035] The automatic core pulling mechanism includes a core pulling cylinder 1, a mechanism assembly plate 2, a three-slide body 3, a multifunctional slider 5, a linkage lever 6, a horizontal core pulling connecting rod 7, a cylindrical core insert 8, an insert base 9, and a trapezoidal insert 15.

[0036] The automatic ejector device is an automatic ejector device provided with the automatic injection molding equipment, and includes a vertical ejector column 11 and an ejector device base 12 ; the mold base includes a lower mold base side wall 13 .

[0037] Assembly of the filter plate handle injection mold: the automatic ejector device is installed on the automatic injection molding equipment and is located at the corresponding position of the mold base, and the combined lower mold is installed on the ejector device; the automatic demoulding mechanism is placed horizontally on the combined lower mold, and the three-slide body 3 is located at the corresponding position on the outside of the combined lower mold; the built-in cooling system runs through each molding core (insert); the upper mold 16 is combined with the upper part of the combined lower mold (the positioning protrusion and the positioning groove fit together), and the core-pulling cylinder 1 is connected to the hydraulic station; the injection mold is placed in the automatic injection molding equipment as a whole, and has the functions of horizontal core loading and core pulling, and automatic vertical ejection of the injection-molded process-free filter plate handle 19.

[0038] The process of injection molding of the filter plate handle is as follows: (1) Core loading and mold closing: the automatic demoulding mechanism is placed on the combined lower mold as a whole, and the cylinder piston rod 4 extends to automatically load the core (place the cylindrical core insert 8), thus completing the precise core loading of each molding core (insert); the upper mold 16 is closed on the combined lower mold to form the filter plate handle 19 cavity; (2) Injection molding: molten polypropylene is injected into the mold cavity through the upper mold injection inlet 18, and is cooled by the built-in cooling system and molded in a few minutes; (3) Core pulling and demoulding: after injection molding, the cylinder piston rod 4 contracts to automatically pull the core horizontally (extract the cylindrical core insert 8); the automatic ejection device of the automatic injection molding equipment pushes open the upper mold 16, and multiple vertical ejection columns 11 automatically eject the plastic part vertically (injection molded processing-free filter plate handle 19).

[0039] The filter plate handle injection mold provided by the present invention has the following beneficial effects: (1) through the most simplified design, the double core pulling cylinder 1 is made to share a simple structure, which effectively reduces the manufacturing cost; (2) through the minimized design: the multifunctional slider 5 and the horizontal core pulling connecting rod 7 share an integral three-slide, and the overall structure of the mold is compact and adaptable to narrow injection molding equipment; (3) through the modular design, the assembly of each molding core is convenient and the relative position is accurate, ensuring product quality; (4) through the optimized design: the double linkage lever 6 is set to optimize the transmission structure, and the horizontal core pulling and vertical ejection demoulding are scientifically realized; it solves the technical problem of optimizing the handle automatic demoulding mechanism that people have always wanted to solve but have never succeeded in solving; the mechanism is streamlined, energy saving, cost reduction and efficiency improvement are achieved.

Claims

1. A single-cylinder driven double-lever automatic demoulding mechanism, comprising a core-pulling cylinder, a mechanism assembly plate, a three-way slide, a multifunctional slider, a linkage lever, a horizontal core-pulling connecting rod, a cylindrical core insert, an insert base, and a trapezoidal insert; characterized in that: The core-pulling cylinder includes a cylinder barrel, a cylinder head, a cylinder piston rod, a piston, a guide sleeve, and a buffer device; the three-slide body has a slider slide in the middle that cooperates with the multifunctional slider, and has double-link slides at both ends that cooperate with the horizontal core-pulling connecting rod, and a linkage lever mounting hole is provided on the bulge between the slider slide and the connecting rod slide; the multifunctional slider is a boot-shaped slider; the linkage lever has a mounting hole in the middle and movable connecting long holes at both ends; the upper end of the horizontal core-pulling connecting rod cooperates with the connecting rod slide, and the lower end connecting structure cooperates with the insert base; the cylindrical core insert, the distance between the double cylindrical core inserts corresponds to the distance between the double mounting holes of the filter plate handle; the three-slide body is mounted on the mechanism assembly plate Below; the multifunctional slider is installed in the slider slide, and the trapezoidal insert is installed below the multifunctional slider; the upper end of the horizontal core-pulling connecting rod is installed in the connecting rod slide, the insert base is installed at the lower end of the horizontal core-pulling connecting rod, and the cylindrical core insert is installed on the insert base; the linkage lever is installed on the protrusion of the three-slide body, and movably connects the multifunctional slider and the horizontal core-pulling connecting rod; the core-pulling cylinder is installed on the mechanism assembly plate, and the cylinder piston rod is movably connected to the multifunctional slider; the automatic demoulding mechanism is placed horizontally on the lower mold body as a whole, and the three-slide body is located at the corresponding position outside the lower mold body; the extension and contraction of the cylinder piston rod can make the multifunctional slider and the horizontal core-pulling connecting rod slide toward each other, the cylinder piston rod is extended to automatically load the core, and the cylinder piston rod is retracted to automatically pull the core.

2. A filter plate handle injection mold capable of automatic demoulding, comprising an upper mold and its pouring system, a combined lower mold, an automatic core-pulling mechanism, an automatic ejection device, and a built-in cooling system. The main material is mold steel; its characteristics are: The automatic core pulling mechanism is the single-cylinder driven double-lever automatic demoulding mechanism described in claim 1; the filter plate handle injection mold is used in conjunction with automatic injection molding equipment, and has the function of automatically injection molding the filter plate handle of the filter press without processing.

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