Mixing device for double-colored plastic injection machine

Abstract

The utility model discloses a mixing device for a double-colored injection molding machine, which comprises a double-colored injection molding machine main body, a heating structure and a plastic particle mixing device, and the plastic particle mixing device is arranged at the feeding end of the heating structure. According to the plastic particle mixing device provided by the utility model, the rotating shaft rotates to enable the stirring rods II at the periphery to stir through the bevel gear set, so that the stirring rods II and the stirring rods I stir in different directions, the materials are fully mixed, and the stirring effect of the mixed materials is improved; in addition, first stirring rods arranged at the upper end and the lower end of a rotating shaft are used for further stirring, scraping plates connected with the first stirring rods can scrape down the mixed materials adhering to the inner side of the mixing box while stirring is conducted, a dust collecting groove is formed in a discharging hopper, dust adhering to the mixed materials can be shaken down through stirring, and the dust is collected in the dust collecting groove; and part of dust falls into the collecting bin through the dust falling hole, and then the falling dust can be cleaned through the dust discharging groove.

Description

Technical Field

[0001] This utility model relates to the field of two-color injection molding machine technology, specifically a mixing device for a two-color injection molding machine. Background Technology

[0002] Two-color plastic molding process refers to the injection molding of two different materials into the same mold, so that the injection molded parts are formed by two materials. Sometimes the two materials are different colors, and sometimes they are different in hardness, thereby improving the product's aesthetics and assembly performance. The two plastics used for injection molding can be mixed evenly by a mixing device to improve the mixing effect.

[0003] The prior art, disclosed in patent document CN218614838U, presents the following technical solution: a mixing device for a two-color injection molding machine, comprising a machine body, wherein a mixing chamber is provided inside the machine body, and an opening is provided at the top of the mixing chamber. Rod seats are fixedly connected to the surfaces of the top of the machine body near both sides of the opening, and a threaded rod is movably connected to the middle position of the two rod seats. A motor is installed on one side of one of the rod seats.

[0004] The above technical solution uses a rotating stirring rod to stir the mixture in the mixing chamber. However, the stirring rod can only stir and mix in one direction along a fixed trajectory. In order to adapt to the size of the mixing chamber, the stirring rod is set to be relatively short. When the stirring rod moves to the center end, a dead angle is created, and the mixture around the perimeter cannot be stirred, resulting in poor stirring effect. Utility Model Content

[0005] The purpose of this invention is to provide a mixing device for a two-color injection molding machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mixing device for a two-color injection molding machine, comprising a two-color injection molding machine body, a heating structure, and a plastic granule mixing device, wherein the plastic granule mixing device is installed at the feeding end of the heating structure.

[0007] The plastic granule mixing device includes a mixing box, inside which a high-efficiency stirring and mixing device is rotatably installed. The high-efficiency stirring and mixing device includes a rotating shaft, which passes through the top side of the mixing box and extends to the lower part of the mixing box. The upper and lower sides of the middle of the rotating shaft are provided with mounting cylinders through bearings. A driving bevel gear is provided on the outer wall of the rotating shaft and inside the mounting cylinder. Driven bevel gears are meshed on the teeth of the driving bevel gear. The output end of the driven bevel gear passes through the circumference of the mounting cylinder through bearings. A rotating rod is provided at the output end of each driven bevel gear. Stirring rods are arranged on the outer wall of the rotating rod.

[0008] In the above technical solution, the rotation of the rotating shaft causes the surrounding stirring rods two to stir through the bevel gear set, thereby causing the stirring rods two and stirring rods one to stir in different directions, so as to fully mix them, save time, and improve the mixing efficiency of the mixture.

[0009] As a further preferred embodiment of this technical solution, a feeding hopper is provided on the bottom side of the mixing box, and ash collection grooves are provided at equal intervals on the inner side of the feeding hopper, with ash dropping holes arranged in the ash collection grooves.

[0010] In the above technical solution, stirring can shake off the dust adhering to the mixture and collect it in the dust collection trough, and the dust can fall into the collection bin through the dust drop hole.

[0011] As a further preferred embodiment of this technical solution, feeding hoppers are provided at the left and right ends of the top side of the mixing box, and discharge pipes are provided at the bottom side of the mixing box and the discharge hopper, with valves provided on the discharge pipes.

[0012] As a further preferred embodiment of this technical solution, a collection bin is provided between the mixing bin and the discharge hopper, and an ash discharge trough is provided around the collection bin.

[0013] In the above technical solution, the dust that falls into the collection bin can be cleaned up in the subsequent ash discharge chute.

[0014] As a further preferred embodiment of this technical solution, stirring rods are arranged at both the upper and lower ends of the rotating shaft, and scrapers are fixedly connected to the outer sides of the stirring rods at both the left and right ends. The scrapers are in contact with the inner sides of the mixing box and the discharge hopper.

[0015] In the above technical solution, the stirring rods at the upper and lower ends of the rotating shaft further stir the mixture, and the scraper connected to the stirring rods can scrape off the mixture adhering to the inside of the mixing box while stirring, thus reducing waste.

[0016] As a further preferred embodiment of this technical solution, a stirring motor is installed on the top side of the rotating shaft, and the stirring motor is connected to an external power source.

[0017] As a further preferred embodiment of this technical solution, the stirring rod 2 is arranged in multiple sets around the rotation axis, and is designed to be relatively long.

[0018] In the above technical solution, the stirring rod 2 is set in multiple sets and designed to be longer, which improves the mixing effect and reduces the dead corners of the mixing.

[0019] This utility model provides a mixing device for a two-color injection molding machine, which has the following beneficial effects:

[0020] (1) This utility model can mix two kinds of plastic granules used in a two-color injection molding machine by installing a plastic granule mixing device. The rotation of the rotating shaft causes the surrounding stirring rods 2 to stir through the bevel gear set, thereby making the stirring rods 2 and 1 stir in different directions, so as to fully mix them, save time, and improve the mixing efficiency. In addition, the stirring rods 1 set at the upper and lower ends of the rotating shaft further stir, and the scraper connected to the stirring rods 1 can scrape off the mixed material adhering to the inside of the mixing box while stirring, reducing waste.

[0021] (2) By opening a dust collection trough on the hopper, the dust adhering to the mixture can be shaken off by stirring and collected in the dust collection trough. Some of the dust falls into the collection bin through the dust discharge hole. The fallen dust can be cleaned up in the subsequent dust discharge trough. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a partial cross-sectional view of the plastic granule mixing device of this utility model;

[0024] Figure 3 This is an enlarged view of Figure A of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the high-efficiency stirring and mixing device of this utility model;

[0026] Figure 5 This is an enlarged view of Figure B of this utility model;

[0027] In the diagram: 1. Main body of the two-color injection molding machine; 2. Heating structure; 3. Plastic granule mixing device; 31. Mixing box; 311. Ash discharge trough; 312. Feed hopper; 313. Discharge pipe; 32. Feed hopper; 321. Ash collection trough; 322. Ash drop hole; 33. High-efficiency stirring and mixing device; 331. Rotating shaft; 332. Stirring rod one; 333. Scraper; 334. Mounting cylinder; 335. Driving bevel gear; 336. Driven bevel gear; 337. Rotating rod; 338. Stirring rod two; 34. Stirring motor. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] This utility model provides a technical solution: such as Figure 1 As shown in this embodiment, a mixing device for a two-color injection molding machine includes a two-color injection molding machine body 1, a heating structure 2, and a plastic granule mixing device 3, which is installed at the feeding end of the heating structure 2.

[0030] like Figure 2 and Figure 5 As shown, the plastic granule mixing device 3 includes a mixing box 31. A high-efficiency stirring and mixing device 33 is rotatably installed inside the mixing box 31. The high-efficiency stirring and mixing device 33 includes a rotating shaft 331, which passes through the top side of the mixing box 31 and extends to the lower part of the mixing box 31. A mounting cylinder 334 is installed on the upper and lower sides of the middle of the rotating shaft 331 via bearings. A driving bevel gear 335 is installed on the outer wall of the rotating shaft 331 and inside the mounting cylinder 334. Driven bevel gears 336 are meshed with the teeth of the driving bevel gear 335. The output ends of the driven bevel gears 336 pass through the mounting cylinder 334 via bearings. A rotating rod 337 is installed at the output end of each driven bevel gear 336. Stirring rods are arranged on the outer wall of the rotating rod 337. 338. Feed hoppers 312 are provided at the left and right ends of the top side of the mixing box 31. Discharge pipes 313 are provided at the bottom of the mixing box 31 and the discharge hopper 32. Valves are provided on the discharge pipes 313. A stirring motor 34 is installed on the top side of the rotating shaft 331. The stirring motor 34 is connected to an external power source. Multiple sets of stirring rods 338 are arranged around the rotating shaft 331 as the center. The design is relatively long. Through the installed plastic granule mixing device 3, two kinds of plastic granules used in two-color injection molding machines can be mixed. The rotation of the rotating shaft 331 causes the stirring rods 338 around the rotating shaft 331 to stir. This allows the stirring rods 338 and the stirring rod 332 to stir in different directions, so that they are fully mixed, saving time and improving the mixing efficiency.

[0031] like Figure 2 and Figure 3 As shown, a hopper 32 is provided on the bottom side of the mixing box 31. A dust collection trough 321 is provided at equal intervals on the inner side of the hopper 32. Dust collection holes 322 are arranged in the dust collection trough 321. A collection bin is provided between the mixing box 31 and the hopper 32. A dust discharge trough 311 is provided around the collection bin. By opening a dust collection trough on the hopper, the dust adhering to the mixture can be shaken off by stirring and collected in the dust collection trough 321. Some dust falls into the collection bin through the dust discharge holes 322. The fallen dust can be cleaned up later through the dust discharge trough 311.

[0032] like Figure 2 and Figure 4 As shown, stirring rods 332 are arranged at the upper and lower ends of the rotating shaft 331. Scrapers 333 are fixedly connected to the outer sides of the stirring rods 332 at both ends. The scrapers 333 are in contact with the inner sides of the mixing box 31 and the hopper 32. The stirring rods 332 at the upper and lower ends of the rotating shaft 331 further stir the mixture. The scrapers 333 connected to the stirring rods 332 can scrape off the mixture adhering to the inner side of the mixing box 31 while stirring, thus reducing waste.

[0033] This utility model provides a mixing device for a two-color injection molding machine. The specific working principle is as follows: When mixing materials in a two-color injection molding machine, two kinds of plastic granules are added from the feed hoppers 312 at both ends. At the same time, the stirring motor 34 is started to drive the rotating shaft 331 to rotate. The active bevel gear 335 drives the driven bevel gears 336 around it to rotate, which in turn causes the rotating rods 337 and the second stirring rod 338 around it to rotate. At the same time, the rotating stirring rod 332 drives the scraper 333 to rotate. During the mixing process, the dust adhering to the mixed material falls off due to the stirring and is collected in the dust collection trough 321. It can be collected in the collection bin through the dust discharge hole 322 and then cleaned through the dust discharge trough 311. After the mixing is completed, the mixed material is allowed to enter the heating structure 2 from the discharge pipe 313 through the valve for heating, and then sprayed out by the nozzle for injection molding.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mixing device for a two-color injection molding machine, comprising a two-color injection molding machine body (1), a heating structure (2), and a plastic granule mixing device (3), characterized in that: The plastic granule mixing device (3) is installed at the feeding end of the heating structure (2); The plastic granule mixing device (3) includes a mixing box (31), and a high-efficiency stirring and mixing device (33) is rotatably installed inside the mixing box (31). The high-efficiency stirring and mixing device (33) includes a rotating shaft (331). The rotating shaft (331) passes through the top side of the mixing box (31) and extends to the lower part of the mixing box (31). The upper and lower sides of the middle part of the rotating shaft (331) are provided with mounting cylinders (334) through bearings. The outer wall of the rotating shaft (331) and inside the mounting cylinder (334) is provided with a driving bevel gear (335). The teeth of the driving bevel gear (335) are meshed with driven bevel gears (336). The output end of the driven bevel gear (336) passes through the circumference of the mounting cylinder (334) through bearings. The output end of the driven bevel gear (336) is provided with a rotating rod (337). The outer wall of the rotating rod (337) is provided with stirring rods (338).

2. The mixing device for a two-color injection molding machine according to claim 1, characterized in that: The mixing box (31) is provided with a feeding hopper (32) on the bottom side inside. The feeding hopper (32) is provided with ash collection troughs (321) at equal intervals on the inner side. Ash collection troughs (321) are provided with ash dropping holes (322) arranged in the middle.

3. The mixing device for a two-color injection molding machine according to claim 1, characterized in that: Feed hoppers (312) are provided at the left and right ends of the top side of the mixing box (31), and discharge pipes (313) are provided at the bottom side of the mixing box (31) and the discharge hopper (32), and valves are provided on the discharge pipes (313).

4. A mixing device for a two-color injection molding machine according to claim 1, characterized in that: A collection bin is provided between the mixing bin (31) and the discharge hopper (32), and an ash discharge trough (311) is provided around the collection bin.

5. A mixing device for a two-color injection molding machine according to claim 1, characterized in that: The rotating shaft (331) has stirring rods (332) arranged at both ends. Scrapers (333) are fixedly connected to the outer sides of the stirring rods (332) at both ends. The scrapers (333) are in contact with the inner sides of the mixing box (31) and the hopper (32).

6. A mixing device for a two-color injection molding machine according to claim 1, characterized in that: A stirring motor (34) is mounted on the top side of the rotating shaft (331), and the stirring motor (34) is connected to an external power source.

7. A mixing device for a two-color injection molding machine according to claim 1, characterized in that: The stirring rod 2 (338) is arranged in multiple sets around the rotating shaft (331) as the center, and is designed to be relatively long.

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