Material drying device convenient for feeding and discharging for injection molding machine

Abstract

The utility model relates to the technical field of material drying for injection molding, in particular to a material drying device convenient for feeding and discharging for an injection molding machine, which comprises a drying barrel and a bottom plate, the drying barrel is mounted on the upper surface of the bottom plate, an inner barrel is fixedly mounted in the drying barrel, and a plurality of inclined stirring blades are rotatably mounted in the inner barrel. A warm air blower and a feeding pipe extending upwards in an inclined mode are fixedly installed on the upper surface of the bottom plate, a collecting groove is formed in the upper surface of the bottom plate, and a plurality of vent grooves are formed in the top of the drying barrel. According to the material drying device facilitating feeding and discharging for the injection molding machine, hot air is guided into the space between the drying barrel and the inner barrel through the warm air blower so that the hot air can circulate in the gap, injection molding raw materials in the inner barrel are dried through the through holes, the injection molding raw materials are continuously stirred through inclined stirring blades, and the drying efficiency and uniformity are improved; and the feeding difficulty is reduced through the inclined auger rod and the low-position feeding opening.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding material drying, in particular to a material drying device for an injection molding machine which is convenient for feeding and discharging materials. Background Art

[0002] Injection molding technology is a molding method that combines injection and molding. Injection molding has the advantages of fast production speed and high efficiency. It can not only realize the automation of the entire processing process, but also has a wide variety of colors and patterns, and the shapes and sizes can be flexibly adjusted. Moreover, its product updates are fast and can adapt to the processing needs of mass production in modern society.

[0003] The raw materials for injection molding, such as ABS, PC, PA, etc., all have a certain degree of water absorption. If they are not properly stored during storage and transportation, they will absorb some moisture. The moisture contained in the raw materials will vaporize at high temperatures, resulting in defects such as bubbles on the surface of the final product. Therefore, the raw materials need to be dried before injection molding.

[0004] At present, the drying device of the injection molding machine has problems such as uneven heating of the injection molding materials during the heating and drying process, which leads to incomplete drying of the injection molding materials, or excessive local temperature causing the raw materials to melt during the drying process. In addition, the feed port of the dryer is usually at the top of the device, which makes it difficult to feed the injection molding materials.

[0005] In order to solve the above problems, we have made improvements and proposed a material drying device for injection molding machines that is convenient for loading and unloading materials. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] The utility model provides a drying device for an injection molding machine which is convenient for feeding and discharging materials, comprising a drying barrel and a bottom plate, wherein the drying barrel is mounted on the upper surface of the bottom plate, an inner barrel is fixedly mounted inside the drying barrel, a plurality of inclined stirring blades are rotatably mounted inside the inner barrel, a heater and a feeding pipe which extends obliquely upward are fixedly mounted on the upper surface of the bottom plate, a collecting groove is arranged on the upper surface of the bottom plate, and a plurality of ventilation grooves are opened on the top of the drying barrel.

[0008] As a preferred technical solution of the utility model, a plurality of through holes are opened on the surface of the inner barrel, the diameter of the through holes is smaller than the particle size of the injection molding raw material, a gap is left between the outer wall of the inner barrel and the inner wall of the drying barrel, a discharge port is fixedly installed at the bottom of the inner barrel, the discharge port extends downward to penetrate the bottom of the drying barrel, and a valve is installed in the discharge port.

[0009] As a preferred technical solution of the utility model, a first servo motor is fixedly installed on the outer top surface of the drying barrel, a rotating rod is rotatably installed inside the inner barrel, a plurality of stirring blades are fixedly installed on the outer surface of the rotating rod, a scraper is fixedly installed on the bottom of the rotating rod, the length of the scraper is consistent with the radius of the inner barrel, the bottom surface of the scraper is in contact with the inner bottom surface of the inner barrel, and the rotating shaft of the first servo motor is coaxially fixedly connected to the rotating rod.

[0010] As a preferred technical solution of the utility model, a plurality of support columns are fixedly installed on the outer bottom surface of the inner barrel, the inner bottom surface of the drying barrel is fixedly connected to the bottom of the support columns, a support frame is fixedly installed on the outer surface of the drying barrel, and the bottom of the support frame is fixedly connected to the upper surface of the base plate.

[0011] As a preferred technical solution of the utility model, a second servo motor is fixedly installed at the bottom of the feeding tube, a dragon rod is rotatably installed inside the feeding tube, the rotating shaft of the second servo motor is coaxially fixedly connected to the dragon rod, the end of the feeding tube extends downward at an angle and is fixedly connected to the top of the drying barrel, the feeding tube is connected to the interior of the inner barrel, and a feed port is fixedly installed on the outer surface of the bottom of the feeding tube, and the feed port is connected to the interior of the feeding tube.

[0012] As a preferred technical solution of the utility model, a connecting pipe is fixedly installed on the upper surface of the heater, the other end of the connecting pipe is fixedly connected to the outer surface of the drying barrel, and the connecting pipe is connected to the interior of the drying barrel.

[0013] As a preferred technical solution of the utility model, a slide groove is provided on the upper surface of the bottom plate, and the collecting trough is slidably connected to the bottom plate via the slide groove.

[0014] The beneficial effects of the utility model are as follows: the drying device for injection molding machine which is convenient for feeding and discharging materials, introduces hot air into the gap between the drying barrel and the inner barrel through a warm air blower to make it flow in the gap, dries the injection molding raw materials inside the inner barrel through the through holes, and the inclined stirring blades continuously stir the injection molding raw materials to improve the drying efficiency and uniformity, and reduces the difficulty of feeding materials through the inclined dragon rod and the low-position feeding port. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the inner barrel of the utility model;

[0019] In the figure: 1. drying barrel; 2. bottom plate; 3. feeding pipe; 4. feeding port; 5. first servo motor; 6. ventilation slot; 7. support frame; 8. collecting slot; 9. slide slot; 10. heater; 11. connecting pipe; 12. dragon rod; 13. inner barrel; 14. rotating rod; 15. stirring blade; 16. through hole; 17. discharging port; 18. scraper; 19. second servo motor. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] Example: Figure 1-3 As shown, a drying device for an injection molding machine which is convenient for loading and unloading materials comprises a drying barrel 1 and a bottom plate 2. The drying barrel 1 is mounted on the upper surface of the bottom plate 2. An inner barrel 13 is fixedly mounted inside the drying barrel 1. A plurality of inclined stirring blades 15 are rotatably mounted inside the inner barrel 13. A heater 10 and a feeding pipe 3 which extends obliquely upward are fixedly mounted on the upper surface of the bottom plate 2. A collecting groove 8 is provided on the upper surface of the bottom plate 2. A plurality of ventilation grooves 6 are provided on the top of the drying barrel 1 to discharge the water vapor generated during the drying process in time.

[0022] A plurality of through holes 16 are provided on the surface of the inner barrel 13, and the diameter of the through holes 16 is smaller than the particle size of the injection molding raw material to prevent the injection molding raw material from falling from the through holes 16 to the bottom of the drying barrel 1. A gap is left between the outer wall of the inner barrel 13 and the inner wall of the drying barrel 1 to improve the circulation of warm air therebetween. A discharge port 17 is fixedly installed at the bottom of the inner barrel 13, and the discharge port 17 extends downward to penetrate the bottom of the drying barrel 1. A valve is installed in the discharge port 17, and the dried raw materials are discharged from the discharge port 17.

[0023] A first servo motor 5 is fixedly installed on the outer top surface of the drying barrel 1, a rotating rod 14 is rotatably installed inside the inner barrel 13, a plurality of stirring blades 15 are fixedly installed on the outer surface of the rotating rod 14, a scraper 18 is fixedly installed on the bottom of the rotating rod 14, the length of the scraper 18 is consistent with the radius of the inner barrel 13, the bottom surface of the scraper 18 contacts the inner bottom surface of the inner barrel 13, the rotating shaft of the first servo motor 5 is coaxially fixedly connected with the rotating rod 14, the first servo motor 5 drives the rotating rod 14 to rotate, so that the stirring blade 15 rotates to stir the injection molding raw materials evenly up and down, thereby improving its drying efficiency and accelerating the discharge of water vapor generated during the drying process. The scraper 18 rotates to reduce the residual raw materials at the bottom of the inner barrel 13 during discharge.

[0024] A plurality of support columns are fixedly installed on the outer bottom surface of the inner barrel 13, the inner bottom surface of the drying barrel 1 is fixedly connected to the bottom of the support columns, a support frame 7 is fixedly installed on the outer surface of the drying barrel 1, and the bottom of the support frame 7 is fixedly connected to the upper surface of the bottom plate 2 to maintain the stability of the device during the drying process.

[0025] A second servo motor 19 is fixedly installed at the bottom of the feeding tube 3, and a dragon rod 12 is rotatably installed inside the feeding tube 3. The rotating shaft of the second servo motor 19 is coaxially and fixedly connected to the dragon rod 12. The end of the feeding tube 3 extends downward at an angle and is fixedly connected to the top of the drying barrel 1. The feeding tube 3 is connected to the interior of the inner barrel 13. A feed port 4 is fixedly installed on the outer surface of the bottom of the feeding tube 3. The feed port 4 is connected to the interior of the feeding tube 3. The raw materials are poured into the feed port 4. The second servo motor 19 drives the dragon rod 12 to rotate and delivers the raw materials to the top of the drying barrel 1, thereby improving the convenience of feeding.

[0026] A connecting pipe 11 is fixedly installed on the upper surface of the heater 10, and the other end of the connecting pipe 11 is fixedly connected to the outer surface of the drying barrel 1. The connecting pipe 11 is connected to the interior of the drying barrel 1. The warm air generated by the heater 10 enters the gap between the drying barrel 1 and the inner barrel 13 from the connecting pipe 11 and enters the inner barrel 13 from the through holes 16 on its surface to dry the raw materials inside.

[0027] A chute 9 is provided on the upper surface of the bottom plate 2, and the collecting trough 8 is slidably connected to the bottom plate 2 through the chute 9. The dried raw materials fall into the collecting trough 8, and the collecting trough 8 can be drawn out to be put into the lower process.

[0028] Working principle: This drying device for injection molding machines is convenient for feeding and discharging materials. When in use, the raw materials are poured in from the feed port 4, and the second servo motor 19 drives the dragon rod 12 to rotate to send the raw materials to the top of the drying barrel 1. The warm air generated by the heater 10 enters the gap between the drying barrel 1 and the inner barrel 13 from the connecting pipe 11 and enters the inner barrel 13 from the through holes 16 on its surface to dry the raw materials inside. The first servo motor 5 drives the rotating rod 14 to rotate, so that the stirring blade 15 rotates to stir the injection molding raw materials evenly up and down, improve its drying efficiency, and accelerate the discharge of water vapor generated during the drying process. The scraper 18 rotates to reduce the residual raw materials at the bottom of the inner barrel 13 during discharging. The dried raw materials fall into the collecting tank 8, and the collecting tank 8 can be pulled out to put them into the lower process.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A drying device for an injection molding machine that facilitates material loading and unloading, comprising a drying barrel (1) and a bottom plate (2), characterized in that: The drying barrel (1) is mounted on the upper surface of the base plate (2), an inner barrel (13) is fixedly mounted inside the drying barrel (1), a plurality of inclined stirring blades (15) are rotatably mounted inside the inner barrel (13), a heater (10) and a feeding pipe (3) extending obliquely upward are fixedly mounted on the upper surface of the base plate (2), a collecting groove (8) is provided on the upper surface of the base plate (2), and a plurality of ventilation grooves (6) are provided on the top of the drying barrel (1).

2. A material drying device for an injection molding machine that facilitates material loading and unloading according to claim 1, characterized in that: The surface of the inner barrel (13) is provided with a plurality of through holes (16), the diameter of the through holes (16) being smaller than the particle size of the injection molding raw material, a gap being left between the outer wall of the inner barrel (13) and the inner wall of the drying barrel (1), a discharge port (17) being fixedly installed at the bottom of the inner barrel (13), the discharge port (17) extending downward to penetrate the bottom of the drying barrel (1), and a valve being installed in the discharge port (17).

3. The material drying device for an injection molding machine that is convenient for loading and unloading materials according to claim 1, characterized in that: A first servo motor (5) is fixedly mounted on the outer top surface of the drying barrel (1); a rotating rod (14) is rotatably mounted inside the inner barrel (13); a plurality of stirring blades (15) are fixedly mounted on the outer surface of the rotating rod (14); a scraper (18) is fixedly mounted on the bottom of the rotating rod (14); the length of the scraper (18) is consistent with the radius of the inner barrel (13); the bottom surface of the scraper (18) contacts the inner bottom surface of the inner barrel (13); and the rotating shaft of the first servo motor (5) is coaxially fixedly connected to the rotating rod (14).

4. The material drying device for an injection molding machine that facilitates material loading and unloading according to claim 1, characterized in that: A plurality of support columns are fixedly mounted on the outer bottom surface of the inner barrel (13); the inner bottom surface of the drying barrel (1) is fixedly connected to the bottom of the support columns; a support frame (7) is fixedly mounted on the outer surface of the drying barrel (1); and the bottom of the support frame (7) is fixedly connected to the upper surface of the bottom plate (2).

5. The material drying device for an injection molding machine that facilitates material loading and unloading according to claim 1, characterized in that: A second servo motor (19) is fixedly installed at the bottom of the feeding tube (3), a dragon rod (12) is rotatably installed inside the feeding tube (3), the rotating shaft of the second servo motor (19) is coaxially fixedly connected to the dragon rod (12), the end of the feeding tube (3) extends downwardly at an angle and is fixedly connected to the top of the drying barrel (1), the feeding tube (3) is connected to the interior of the inner barrel (13), and a feed port (4) is fixedly installed on the outer surface of the bottom of the feeding tube (3), and the feed port (4) is connected to the interior of the feeding tube (3).

6. The material drying device for an injection molding machine that facilitates material loading and unloading according to claim 1, characterized in that: A connecting pipe (11) is fixedly mounted on the upper surface of the heater (10), the other end of the connecting pipe (11) is fixedly connected to the outer surface of the drying barrel (1), and the connecting pipe (11) is connected to the interior of the drying barrel (1).

7. The material drying device for an injection molding machine that facilitates material loading and unloading according to claim 1, characterized in that: A sliding groove (9) is provided on the upper surface of the bottom plate (2), and the collecting trough (8) is slidably connected to the bottom plate (2) via the sliding groove (9).

Images