Novel high-precision injection mold

Abstract

The novel high-precision injection mold comprises a mounting seat, a lower mold box is placed at the top of the mounting seat, positioning plates are fixedly connected to the front portion and the rear portion, close to the bottom of the lower mold box, of the lower mold box, and the interiors of the positioning plates and the top of the mounting seat are in threaded connection with positioning screw rods through internal thread grooves; a cooling sealing groove is formed in the lower mold box, and an air inlet pipe and an air outlet pipe are fixedly connected to the right side of the inner wall of the cooling sealing groove. Through the matching of the structures, the effect of cooling circumferential cold air in the high-precision injection mold can be achieved by arranging the cooling sealing groove, the occupied space can be reduced through the external pipeline, the subsequent cooling demolding efficiency is improved, the sealing frame is additionally arranged, leaked flowing materials can be temporarily stored, induction alarming is conducted, and the service life of the injection mold is prolonged. And the rapid cooling plasticity and the leakage early warning function of the whole injection mold are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a novel high-precision injection mold. Background Art

[0002] Injection mold generally refers to injection molding, which is a molding method of injection and molding, and can be used as a tool for producing plastic products. Specifically, it refers to the high-pressure injection of heated and melted plastic into the mold cavity by the injection molding machine, and the molded product is obtained after cooling and solidification. The cavity used for injection molding has the advantages of fast production speed, high efficiency, and automated operation.

[0003] For example, a high-precision injection mold disclosed in patent publication number CN202320485121.4 includes a heat sink block, an ice placing groove is provided on the upper surface of the heat sink block, a support cylinder is fixedly connected to the bottom wall of the inner wall of the ice placing groove, a movable mold is fixedly connected to the upper surface of the support cylinder, a fixed mold is provided on the upper surface of the movable mold, a placing groove is provided on the bottom wall of the inner wall of the heat sink block, and a motor is fixedly connected to the bottom wall of the inner wall of the placing groove;

[0004] Since the above-mentioned high-precision injection mold has more exhaust air structures inside, it occupies a larger space inside the high-precision injection mold, and the high-precision injection mold will be damaged after long-term use. The high-precision injection mold has a leakage sensing function inside, which can easily cause the flowing material to flow out and damage the surrounding equipment, which has a certain adverse effect on actual use, and therefore needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide a novel high-precision injection mold, which has the effect of circumferential cold air cooling inside the high-precision injection mold by setting a cooling sealing groove, and can reduce the occupied space for subsequent cooling and demolding efficiency through an external pipeline, and adds a sealing frame to temporarily retain leaked flowing materials and sense alarms, thereby enhancing the advantages of rapid cooling plasticity and leakage warning function of the entire injection mold, bringing certain favorable effects to actual use and solving the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel high-precision injection mold, comprising a mounting seat, a lower mold box is placed on the top of the mounting seat, and a positioning plate is fixedly connected to the front and rear of the lower mold box near the bottom thereof, and the interior of the positioning plate and the top of the mounting seat are both threadedly connected with a positioning screw through an internal thread groove, a cooling sealing groove is provided inside the lower mold box, and an air inlet pipe and an air outlet pipe are fixedly connected to the right side of the inner wall of the cooling sealing groove, an upper mold cover is placed above the lower mold box, an injection pipe is fixedly connected to the top of the upper mold cover, and a locking assembly is connected to the side of the upper mold cover, an anti-loosening groove is provided on the front side of the lower mold box, and an anti-loosening plate with a firm screw is fixedly installed on the inner wall of the anti-loosening groove, a sealing frame with a transparent observation window is fixedly connected to the surface of the anti-loosening plate, and a sealing cover plate is rotatably connected to the right side of the sealing frame through a pin shaft, a reflux groove communicating with the inner wall of the sealing frame and the inner wall of the cooling sealing groove is provided, and a proximity sensor is fixedly connected to the left side of the inner wall of the sealing frame, and the number of proximity sensors is at least two.

[0007] Preferably, a guide groove is provided on the upper surface of the mounting seat, a guide plate is fixedly connected to the bottom of the lower mold box, and the surface of the guide plate is slidably connected to the inner wall of the guide groove.

[0008] Preferably, the main bodies of the air inlet pipe and the air outlet pipe are both external sealing pipes with internal thread grooves, and the inner wall of the external sealing pipe is threadedly connected to the inner sealing pipe.

[0009] Preferably, a dust filter is fixedly connected to the inner wall of the inner sealing tube, and the surface of the dust filter is coated with an anti-corrosion coating.

[0010] Preferably, the locking assembly includes an electromagnetic suction card plate and an electromagnetic suction sleeve, the electromagnetic suction card plate is fixedly connected to the upper mold cover, the electromagnetic suction sleeve is fixedly connected to the side of the lower mold box, and the inner wall of the electromagnetic suction sleeve is clamped and adapted to the surface of the electromagnetic suction card plate.

[0011] Preferably, an annular sealing gasket is fixedly connected to the bottom of the upper mold cover, and the surface of the annular sealing gasket is in sealing contact with the top of the lower mold box.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, after cleaning through the provided guide groove or pushing the mold box of different specifications to a suitable position, the positioning screw is then rotated to connect the positioning plate to the mounting seat, so as to complete the stable installation and positioning of the lower mold box on the mounting seat. Subsequently, a sealing frame is added on the front side of the lower mold box, and two reflux grooves are provided inside the sealing frame for ventilation. Through the provision of an electromagnetic suction sleeve and an electromagnetic suction card plate, the upper mold cover can be positioned, abutted and clamped on the lower mold box, so that material can be infused through the injection molding tube above the upper mold cover, so that the material model can be plastically molded in the lower mold box, and an annular sealing gasket is provided between the upper mold cover and the lower mold box for secondary sealing and abutment. When accelerating the cooling and molding of the model in the lower mold box, external cold air can enter through the air inlet pipe and then circulate out through the air outlet pipe, forming a circumferential annular low-temperature environment in the cooling sealing groove, and increasing the sealing frame to extend the cold air retention time;

[0014] In the utility model, the cooling sealing groove is provided to serve as an outer ring protection at the model forming part in the lower mold box. If the flowing material leaks out of the lower mold box after long-term use, the flowing material will flow into the interior of the sealing frame through the reflux groove, and the material flow rate can be observed through the transparent observation window on the front side of the sealing frame. When a large amount of flowing material leaks out, it will be sensed by the proximity sensor to alarm, and the material inside the sealing frame can be discharged later by opening the sealing cover, thereby increasing the leakage warning function of the entire injection mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the sealing frame in the utility model;

[0017] Figure 3 It is an enlarged view of point A of the utility model;

[0018] Figure 4 It is an enlarged view of point B of the present utility model.

[0019] In the figure: 1. mounting base; 2. lower mold box; 3. positioning plate; 4. positioning screw; 5. cooling sealing groove; 6. air inlet pipe; 7. air outlet pipe; 8. upper mold cover; 9. injection tube; 10. anti-loosening groove; 11. anti-loosening plate; 12. sealing frame; 13. sealing cover plate; 14. reflux groove; 15. proximity sensor; 16. guide groove; 17. guide plate; 18. outer sealing tube; 19. inner sealing tube; 20. dust filter; 21. electromagnetic suction card plate; 22. electromagnetic suction card sleeve; 23. annular sealing gasket. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1, please refer to Figures 1 to 4 The utility model provides a technical solution: a new type of high-precision injection mold, including a mounting seat 1, a lower mold box 2 is placed on the top of the mounting seat 1, and the front and rear of the lower mold box 2 near the bottom are fixedly connected with a positioning plate 3, the interior of the positioning plate 3 and the top of the mounting seat 1 are threadedly connected with a positioning screw 4 through an internal thread groove, a cooling sealing groove 5 is opened inside the lower mold box 2, and an air inlet pipe 6 and an air outlet pipe 7 are fixedly connected to the right side of the inner wall of the cooling sealing groove 5, an upper mold cover 8 is placed above the lower mold box 2, and the top of the upper mold cover 8 is fixedly connected with an injection Plastic tube 9, the side of the upper mold cover 8 is connected with a locking assembly, the front side of the lower mold box 2 is provided with an anti-loosening groove 10, the inner wall of the anti-loosening groove 10 is fixedly installed with an anti-loosening plate 11 with a firm screw, the surface of the anti-loosening plate 11 is fixedly connected with a sealing frame 12 with a transparent observation window, the right side of the sealing frame 12 is rotatably connected with a sealing cover plate 13 through a pin shaft, a communicating reflux groove 14 is provided between the inner wall of the sealing frame 12 and the inner wall of the cooling sealing groove 5, the left side of the inner wall of the sealing frame 12 is fixedly connected with a proximity sensor 15, and the number of the proximity sensors 15 is at least two.

[0022] Furthermore, a guide groove 16 is provided on the upper surface of the mounting seat 1, and a guide plate 17 is fixedly connected to the bottom of the lower mold box 2. The surface of the guide plate 17 and the inner wall of the guide groove 16 are slidably connected. Through the setting of the guide groove 16 and the guide plate 17, the mold boxes 2 of different specifications can be pushed to the appropriate position.

[0023] Furthermore, the locking assembly includes an electromagnetic suction card plate 21 and an electromagnetic suction sleeve 22, the electromagnetic suction card plate 21 is fixedly connected to the upper mold cover 8, the electromagnetic suction sleeve 22 is fixedly connected to the side of the lower mold box 2, the inner wall of the electromagnetic suction sleeve 22 and the surface of the electromagnetic suction card plate 21 are clamped and adapted, and through the arrangement of the electromagnetic suction sleeve 22 and the electromagnetic suction card plate 21, the upper mold cover 8 can be positioned, abutted and clamped on the lower mold box 2.

[0024] Furthermore, an annular sealing gasket 23 is fixedly connected to the bottom of the upper mold cover 8, and the surface of the annular sealing gasket 23 is sealed and abutted against the top of the lower mold box 2. An annular sealing gasket 23 is provided between the upper mold cover 8 and the lower mold box 2 for secondary sealing and abutment.

[0025] Example 2, please refer to Figures 1 to 4 The difference between this embodiment and the embodiment 1 is that the main bodies of the air inlet pipe 6 and the air outlet pipe 7 are both external sealing pipes 18 with internal thread grooves, and the inner wall of the external sealing pipe 18 is threadedly connected with an inner sealing pipe 19. The inner wall of the inner sealing pipe 19 is fixedly connected with a dust filter 20, and the surface of the dust filter 20 is coated with an anti-corrosion coating. Since the air inlet pipe 6 and the air outlet pipe 7 are both composed of the external sealing pipe 18 and the inner sealing pipe 19, the sealing state of the connection can be released by subsequent thread rotation, which increases the effect of the dust filter 20 in filtering impurities in the external air.

[0026] Working principle: When this new type of high-precision injection mold is in use, the staff can use expansion bolts or other positioning screws 4 to position and install the mounting seat 1, and can clean it through the guide groove 16 or push the mold box 2 of different specifications to a suitable position, and then rotate the positioning screw 4 to connect the positioning plate 3 on the mounting seat 1, so as to complete the smooth installation and positioning of the lower mold box 2 on the mounting seat 1. Subsequently, a sealing frame 12 is added to the front side of the lower mold box 2, and two reflux grooves 14 are arranged inside the sealing frame 12 for ventilation. Through the arrangement of the electromagnetic suction sleeve 22 and the electromagnetic suction card plate 21, the upper mold cover 8 can be positioned, abutted and clamped on the lower mold box 2, so as to inject material through the injection tube 9 above the upper mold cover 8, so that the material model can be plastically molded in the lower mold box 2, and there is a space between the upper mold cover 8 and the lower mold box 2. There is an annular sealing gasket 23 for secondary sealing and abutment. When the cooling and forming of the model in the lower mold box 2 is accelerated later, external cold air can enter through the air inlet pipe 6 and then circulate out through the air outlet pipe 7, forming a circumferential annular low-temperature environment in the cooling sealing groove 5. The sealing frame 12 is increased to extend the retention time of the cold air, and the provided cooling sealing groove 5 can be used as an outer ring protection for the model forming part in the lower mold box 2. If the flowing material leaks out of the lower mold box 2 after long-term use, the flowing material will flow into the interior of the sealing frame 12 through the reflux groove 14, and the material flow rate can be observed through the transparent observation window on the front side of the sealing frame 12. When a large amount of flowing material leaks out, it will be sensed by the proximity sensor to alarm, and the material inside the sealing frame 12 can be discharged later by opening the sealing cover 13, thereby enhancing the rapid cooling plasticity and leakage warning function of the entire injection mold.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel high-precision injection mold, comprising a mounting seat (1), a lower mold box (2) being placed on the top of the mounting seat (1), characterized in that: The lower mold box (2) is fixedly connected to a positioning plate (3) at the front and rear near the bottom thereof, and the interior of the positioning plate (3) and the top of the mounting seat (1) are both threadedly connected to a positioning screw (4) via an internal thread groove. The interior of the lower mold box (2) is provided with a cooling sealing groove (5), and the right side of the inner wall of the cooling sealing groove (5) is fixedly connected to an air inlet pipe (6) and an air outlet pipe (7). An upper mold cover (8) is placed above the lower mold box (2), and the top of the upper mold cover (8) is fixedly connected to an injection tube (9). The side of the upper mold cover (8) is connected to a locking assembly. The front side of the mold box (2) is provided with an anti-loosening groove (10), the inner wall of the anti-loosening groove (10) is fixedly installed with an anti-loosening plate (11) with a firm screw, the surface of the anti-loosening plate (11) is fixedly connected to a sealing frame (12) with a transparent observation window, the right side of the sealing frame (12) is rotatably connected to a sealing cover plate (13) via a pin shaft, a reflow groove (14) communicating with the inner wall of the sealing frame (12) and the inner wall of the cooling sealing groove (5) is provided, and a proximity sensor (15) is fixedly connected to the left side of the inner wall of the sealing frame (12), and the number of the proximity sensors (15) is at least two.

2. A novel high-precision injection mold according to claim 1, characterized in that: A guide groove (16) is provided on the upper surface of the mounting seat (1), a guide plate (17) is fixedly connected to the bottom of the lower mold box (2), and a surface of the guide plate (17) is slidably connected to an inner wall of the guide groove (16).

3. A novel high-precision injection mold according to claim 1, characterized in that: The main bodies of the air inlet pipe (6) and the air outlet pipe (7) are both external sealing pipes (18) with internal thread grooves, and the inner wall of the external sealing pipe (18) is threadedly connected to an internal sealing pipe (19).

4. A new type of high-precision injection mold according to claim 3, characterized in that: The inner wall of the inner sealing tube (19) is fixedly connected to a dust filter screen (20), and the surface of the dust filter screen (20) is coated with an anti-corrosion coating.

5. A novel high-precision injection mold according to claim 1, characterized in that: The locking assembly comprises an electromagnetic suction card plate (21) and an electromagnetic suction card sleeve (22); the electromagnetic suction card plate (21) is fixedly connected to the upper mold cover (8); the electromagnetic suction card sleeve (22) is fixedly connected to the side of the lower mold box (2); the inner wall of the electromagnetic suction card sleeve (22) is snap-fitted and matched with the surface of the electromagnetic suction card plate (21).

6. A novel high-precision injection mold according to claim 1, characterized in that: An annular sealing gasket (23) is fixedly connected to the bottom of the upper mold cover (8), and the surface of the annular sealing gasket (23) is in sealing contact with the top of the lower mold box (2).

Images