An injection mold with inner magnetic encapsulation

Abstract

The present invention discloses an injection mold with inner magnetic rubber coating, which includes an upper mold plate, a nozzle plate is provided on the lower side of the upper mold plate, an upper mold core is provided on the lower side of the nozzle plate, a groove matching the workpiece is provided in the middle of the upper mold core, the groove is connected to the injection port, an upper part of a middle mold plate is provided below the upper mold core, a lower mold core is provided in the middle of the upper part of the middle mold plate, a positioning piece is fixed on the upper side of the lower mold core, the lower mold core passes through the upper part of the middle mold plate and is installed through a flange, and the upper end of the lower mold core is sealed with the upper part of the middle mold plate through a sealing gasket. The present invention can make loading and taking of the workpiece more convenient by using a twitching plate and related positioning devices, and at the same time, demoulding can be conveniently performed by using an ejector block and an ejector pin.

Description

Technical Field

[0001] The invention relates to the technical field of rubber-coated molds, in particular to an injection mold with internal magnetic rubber-coated molds. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging molding, smelting, stamping and other methods. In short, molds are tools used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material. It is a tool that makes the blank become a part with a specific shape and size under the action of external force. It is widely used in blanking, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, and compression molding or injection molding of engineering plastics, rubber, ceramics and other products. The mold generally consists of two parts, the movable mold and the fixed mold, which can be separated or combined. When separated, the workpiece is taken out, and when closed, the blank is injected into the mold cavity for forming. The mold is a precision tool with a complex shape and bears the expansion force of the blank. It has high requirements for structural strength, rigidity, surface hardness, surface roughness and processing accuracy. The development level of mold production is one of the important indicators of the level of mechanical manufacturing.

[0003] Rubber coating is a secondary molding process, which refers to an injection molding process in which a thermoplastic elastomer is bonded to an engineering plastic by melt adhesion. The internal magnet in the existing magnetic pump is difficult to position during the rubber coating process due to its round structure, and it is difficult to load and remove. Therefore, the present invention provides an injection mold for internal magnet rubber coating to solve the problems raised in the above background technology. Summary of the invention

[0004] The object of the present invention is to provide an injection mold with internal magnetic encapsulation to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An injection mold with internal magnetic rubber coating, comprising an upper mold plate, a nozzle plate is provided on the lower side of the upper mold plate, an upper mold core is provided on the lower side of the nozzle plate, a groove matching the workpiece is provided in the middle of the upper mold core, the groove is connected to the injection port, an upper part of a middle mold plate is provided below the upper mold core, a lower mold core is provided in the middle of the upper part of the middle mold plate, a positioning piece is fixed on the upper side of the lower mold core, a plurality of electric telescopic rods are symmetrically provided at the lower end of the upper part of the middle mold plate about the axis of the upper mold core, a twitching plate is connected to the lower end of the electric telescopic rod, a lower part of the middle mold plate is slidably connected to the lower part of the middle mold plate on the lower side of the twitching plate, a lower part of the middle mold plate is fixedly connected to the lower mold plate on the lower side, the workpiece is positioned by the upper mold core and the lower mold core, and rubber coating is performed through the injection port, a lower sealing ring and a guide rod are installed on the upper part of the middle mold plate, the upper sealing ring and the lower sealing ring are correspondingly arranged, and the guide groove and the guide rod are correspondingly arranged to maintain the sealing of the injection cavity;

[0007] An upper sealing ring and a guide groove are installed on the lower side of the upper mold core, and a pressure sensor is installed on the lower side of the upper mold core for judging the degree of compression. An ejector pin is provided on the lower mold core, and an ejector block is correspondingly provided below the ejector pin, and the ejector block is fixedly connected to the upper side of the pulling plate. When the electric telescopic rod is extended to a certain length, the ejector block generates a thrust on the ejector pin to help the workpiece to be demolded. A plurality of rollers are rotatably connected to the upper side of the lower part of the middle mold plate, and the rollers are rotatably connected in the guide rail, and the guide rail is fixed to the lower side of the pulling plate. An electromagnetic fixing pin is installed on the right side of the lower part of the middle mold plate, and a matching groove is provided on the pulling plate. The device is equipped with a master controller for controlling the injection molding process.

[0008] As a further solution of the present invention, the lower mold core passes through the upper part of the middle mold plate and is installed through a flange, and the upper end of the lower mold core is sealed with the upper part of the middle mold plate through a sealing gasket, which is convenient for installation and replacement.

[0009] As a further solution of the present invention, a plurality of guide rods are fixed to the left side of the lower part of the middle template, and the guide rods are slidably connected in the guide grooves of the pulling plate to prevent the pulling plate from rotating.

[0010] As a further solution of the present invention, the movable rod of the electromagnetic fixing pin is connected with a pointer, and an indicator plate is provided on the lower part of the middle template corresponding to the pointer to indicate whether the electromagnetic fixing pin is in place.

[0011] As a further solution of the present invention, a recessed handle is provided on the right side of the pulling plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention can make the loading and taking of workpieces more convenient through the twitching plate and the related positioning devices, and at the same time, demoulding can be conveniently performed through the ejector block and the ejector pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1The figure is a schematic diagram of the front view structure of an injection mold with internal magnetic encapsulation.

[0015] Figure 2 It is a schematic diagram of the right side structure of an injection mold with internal magnetic encapsulation.

[0016] Figure 3 The figure is a schematic diagram of the three-dimensional structure of the lower part of the middle mold plate in an injection mold with internal magnetic encapsulation.

[0017] In the figure: 1. upper mold plate; 2. nozzle plate; 3. upper mold core; 4. lower mold core; 5. upper part of middle mold plate; 6. electric telescopic rod; 7. lower mold plate; 8. guide rail; 9. roller; 10. handle; 11. electromagnetic fixing pin; 12. indicator plate; 13. upper sealing ring; 14. lower sealing ring; 15. positioning piece; 16. injection port; 17. ejector pin; 18. lower part of middle mold plate. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figures 1 to 3 In an embodiment of the present invention, an injection mold with internal magnetic rubber coating comprises an upper mold plate 1, a nozzle plate 2 is provided on the lower side of the upper mold plate 1, an upper mold core 3 is provided on the lower side of the nozzle plate 2, a groove matching the workpiece is provided in the middle of the upper mold core 3, and the groove is connected to the injection port 16, a middle mold upper part 5 is provided below the upper mold core 3, a lower mold core 4 is provided in the middle of the middle mold upper part 5, a positioning member 15 is fixed on the upper side of the lower mold core 4, the lower mold core 4 passes through the middle mold upper part 5 and is installed through a flange, and the upper end of the lower mold core 4 is sealed with the middle mold upper part 5 through a sealing gasket, which is convenient for installation and replacement, and a plurality of electric telescopic rods 6 are symmetrically provided at the lower end of the middle mold upper part 5 about the axis of the upper mold core 3, and a twitching plate is connected to the lower end of the electric telescopic rod 6, and a middle mold lower part 18 is slidably connected to the lower side of the twitching plate, and the lower side of the middle mold lower part 18 is fixedly connected to the lower mold 7, and the workpiece is positioned by the upper mold core 3 and the lower mold core 4, and rubber coating is performed through the injection port 16;

[0020] An upper sealing ring 13 and a guide groove are installed on the lower side of the upper mold core 3. A pressure sensor is installed on the lower side of the upper mold core 3 to judge the degree of compression. A lower sealing ring 14 and a guide rod are installed on the upper part 5 of the middle mold plate. The upper sealing ring 13 and the lower sealing ring 14 are arranged correspondingly, and the guide groove and the guide rod are arranged correspondingly to maintain the sealing of the injection cavity. An ejector pin 17 is provided on the lower mold core 4, and an ejector block is correspondingly provided below the ejector pin 17. The ejector block is fixedly connected to the upper side of the twitching plate. When the electric telescopic rod 6 is extended to a certain length, the ejector block generates a thrust on the ejector pin 17 to help the workpiece to be demoulded. The upper side of the lower part 18 of the middle mold plate is rotated to connect It is connected to a plurality of rollers 9, which are rotatably connected in the guide rails 8, which are fixed on the lower side of the twitching plate. A plurality of guide rods are fixed on the left side of the lower part 18 of the middle template, which are slidably connected in the guide grooves of the twitching plate to prevent the twitching plate from rotating. An electromagnetic fixing pin 11 is installed on the right side of the lower part 18 of the middle template, and a matching groove is provided on the twitching plate. The moving rod of the electromagnetic fixing pin 11 is connected to a pointer, and an indicator plate 12 is provided on the lower part 18 of the middle template corresponding to the pointer to indicate whether the electromagnetic fixing pin 11 is in place. A recessed handle 10 is provided on the right side of the twitching plate. The device is equipped with a master controller for controlling the injection molding process.

[0021] The working principle of the present invention is: when in use, the electric telescopic rod 6 reaches the specified height, the workpiece is placed on the positioning piece 15, and the pulling plate is pushed by the handle 10. After reaching the bottom, the main controller controls the electromagnetic fixing pin 11 to be clamped in the groove, and determines whether it is in place by the position of the pointer on the indicator plate 12. Then the electric telescopic rod 6 is extended, the upper mold core 3 and the lower mold core 4 are molded, the upper sealing ring 13 corresponds to the lower sealing ring 14, the guide groove corresponds to the guide rod, the injection cavity is sealed, and the pressure sensor is used for monitoring, and injection molding is performed through the injection port 16. After completion, the electric telescopic rod 6 is shortened to the specified height, the pulling plate can be pulled, and after the lower mold core 4 is pulled out, the electric telescopic rod 6 continues to shorten, and the ejector block generates a thrust on the ejector pin 17 to help the workpiece to be demolded.

[0022] The present invention can make the loading and taking of workpieces more convenient by means of the pumping plate and the related positioning devices, and at the same time, demoulding can be conveniently performed by means of the ejector block and the ejector pin 17 .

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection mold with internal magnetic encapsulation, comprising an upper mold plate (1), characterized in that: A nozzle plate (2) is provided at the lower side of the upper mold plate (1), an upper mold core (3) is provided at the lower side of the nozzle plate (2), a groove matching the workpiece is provided in the middle of the upper mold core (3), the groove is connected to the injection port (16), a middle mold upper part (5) is provided below the upper mold core (3), a lower mold core (4) is provided in the middle of the middle mold upper part (5), a positioning member (15) is fixed on the upper side of the lower mold core (4), a plurality of electric telescopic rods (6) are symmetrically provided at the lower end of the middle mold upper part (5) about the axis of the upper mold core (3), a twitching plate is connected at the lower end of the electric telescopic rod (6), a middle mold lower part (18) is slidably connected at the lower side of the twitching plate, a lower mold lower part (18) is fixedly connected at the lower side of the middle mold lower part (7), a lower sealing ring (14) and a guide rod are installed on the middle mold upper part (5), the upper sealing ring (13) and the lower sealing ring (14) are arranged correspondingly, and the guide groove and the guide rod are arranged correspondingly; An upper sealing ring (13) and a guide groove are installed on the lower side of the upper mold core (3), a pressure sensor is installed on the lower side of the upper mold core (3), an ejector pin (17) is provided on the lower mold core (4), an ejector block is correspondingly provided below the ejector pin (17), and the ejector block is fixedly connected to the upper side of the twitching plate, a plurality of rollers (9) are rotatably connected to the upper side of the lower part (18) of the middle mold plate, the rollers (9) are rotatably connected in the guide rail (8), and the guide rail (8) is fixed to the lower side of the twitching plate, an electromagnetic fixing pin (11) is installed on the right side of the lower part (18) of the middle mold plate, and a matching groove is provided on the twitching plate. The device is installed with a master controller.

2. The internal magnetic encapsulated injection mold according to claim 1, characterized in that: The lower mold core (4) passes through the upper part (5) of the middle mold plate and is installed via a flange, and the upper end of the lower mold core (4) is sealed with the upper part (5) of the middle mold plate via a sealing gasket.

3. The internal magnetic encapsulated injection mold according to claim 1, characterized in that: A plurality of guide rods are fixed to the left side of the lower part (18) of the middle template, and the guide rods are slidably connected in the guide grooves of the twitching plate.

4. The internal magnetic encapsulated injection mold according to claim 1, characterized in that: The movable rod of the electromagnetic fixing pin (11) is connected to a pointer, and an indicator plate (12) is provided on the lower part (18) of the middle template corresponding to the pointer.

5. The internal magnetic encapsulated injection mold according to claim 1, characterized in that: A recessed handle (10) is provided on the right side of the pumping plate.

Images