Drying and feeding device for injection molding

Abstract

The injection molding drying and feeding device comprises a drying cylinder and a drying machine, the upper end of the drying cylinder is in an open state, the drying machine is installed on the outer wall of the drying cylinder, the outer wall of the drying cylinder is fixedly connected with a fixing plate and a material guiding pipe, and the upper end face of the fixing plate is rotationally connected with a reciprocating lead screw; the reciprocating lead screw and the rotating rod are located on the same circle center shaft, the reciprocating lead screw is connected with a connecting plate through a connecting mechanism, and the rotating rod is rotationally connected to the lower end face of the connecting plate. By arranging the reciprocating lead screw, the conveying auger, the lead screw sleeve and the like, the reciprocating lead screw drives the connecting plate to slide up and down, the stirring range of the stirring plates can be enlarged in cooperation with rotation of the multiple sets of stirring plates, meanwhile, rotation of the conveying auger can enable plastic particles in the drying cylinder to be in a flowing state all the time, and the drying efficiency is improved. In this way, the uniformity during plastic particle drying is improved, the injection molding quality is guaranteed, and meanwhile the drying effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding and drying, in particular to an injection molding and drying feeding device. Background Art

[0002] Plastic pellets are formed by cutting plastic strips extruded from an extruder at high temperature into particles after being cut by a pelletizer. The plastic strips are generally cooled by water, so there is still moisture left on the surface of the plastic pellets after cutting. Therefore, the moisture on the surface of the plastic pellets needs to be removed before feeding the injection molding machine.

[0003] At present, the commonly used drying method for raw materials of injection molding machines is to use the hot air provided by the blower to air-dry the plastic particles. The specific operation is to put the plastic particles into the hopper, and then let the blower blow the hot air into the hopper from one side to dry the plastic particles. Most devices are equipped with a stirring rod to stir the plastic particles during the drying process, but the stirring range and degree of the stirring rod are limited. Some areas in the hopper cannot be stirred, resulting in uneven drying of the plastic particles, thereby affecting the quality of injection molding. Therefore, it is necessary to redesign an injection molding drying feeding device to address the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an injection molding drying and feeding device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An injection molding drying and feeding device comprises a drying cylinder and a drying machine, wherein the upper end of the drying cylinder is in an open state, and the dryer is mounted on the outer wall of the drying cylinder, and a fixed plate and a material guide pipe are fixedly connected to the outer wall of the drying cylinder, and the material guide pipe is connected to the inside of the drying cylinder through two groups of connecting pipes, and the two groups of connecting pipes are both inclinedly arranged, and a rotating rod is rotatably connected inside the drying cylinder, and a plurality of stirring plates are equidistantly arranged on the outer wall of the rotating rod, and a reciprocating screw is rotatably connected to the upper end surface of the fixed plate, and the reciprocating screw and the rotating rod are located on the same central axis, and the reciprocating screw is connected to the connecting plate through a connecting mechanism, and the rotating rod is rotatably connected to the lower end surface of the connecting plate.

[0007] Preferably, the connecting mechanism comprises a screw sleeve threadedly connected to the reciprocating screw threaded section, and two groups of connecting rods are fixedly connected to the lower end surface of the screw sleeve, and the two groups of connecting rods are both slidably connected to the fixed plate, and their ends are fixedly connected to the connecting plate.

[0008] Preferably, a feeding auger is rotatably connected to the inner bottom of the material guide pipe, and a transmission wheel 1 is rotatably connected to the upper end surface of the material guide pipe, and the transmission wheel 1 is coaxially and fixedly connected to the feeding auger.

[0009] Preferably, the end of the reciprocating screw is fixedly connected to a second transmission wheel, and the second transmission wheel is connected to the first transmission wheel via a transmission belt.

[0010] Preferably, a servo motor 1 and a servo motor 2 are respectively installed on the lower end surface of the material guide tube and the upper end surface of the connecting plate, the output shaft of the servo motor 1 is coaxially fixedly connected to the material feeding auger, and the servo motor 2 is coaxially fixedly connected to the rotating rod.

[0011] Preferably, the height of the feed auger is higher than the height of the rotating rod, and the radius of the second transmission wheel is larger than the radius of the reciprocating screw.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model is provided with a reciprocating screw, a feeding auger, a screw sleeve and other devices. By means of the reciprocating screw, the connecting plate is driven to slide up and down. The stirring range of the stirring plate can be increased by cooperating with the rotation of multiple groups of stirring plates. At the same time, the rotation of the feeding auger can keep the plastic particles in the drying cylinder in a flowing state. In this way, the uniformity of drying the plastic particles is improved, the quality of injection molding is ensured, and the drying effect is further improved.

[0014] 2. The utility model sets a transmission wheel 1, a transmission wheel 2 and other devices, drives the feed auger to rotate through a servo motor 1, and cooperates with the transmission wheel 1 and the transmission wheel 2 to synchronously drive the reciprocating screw to rotate. In this way, the rotation of the feed auger and the reciprocating screw can be realized through a single power output source. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of an injection molding drying and feeding device proposed by the utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the internal structure of the middle drying drum.

[0017] Figure 3 for Figure 1 Cross-sectional view of the middle material guide tube.

[0018] In the figure: 1. Drying cylinder; 2. Fixed plate; 3. Dryer; 4. Material guide pipe; 5. Servo motor 1; 6. Rotating rod; 7. Stirring plate; 8. Transmission wheel 1; 9. Transmission belt; 10. Transmission wheel 2; 11. Reciprocating screw; 12. Screw sleeve; 13. Connecting rod; 14. Connecting plate; 15. Servo motor 2; 16. Feeding auger. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-3 , an injection molding drying and feeding device, comprising a drying cylinder 1 and a drying machine 3, the upper end of the drying cylinder 1 is in an open state, the drying machine 3 is installed on the outer wall of the drying cylinder 1, the outer wall of the drying cylinder 1 is fixedly connected with a fixed plate 2 and a material guide pipe 4, the material guide pipe 4 is connected with the inside of the drying cylinder 1 through two groups of connecting pipes, and the two groups of connecting pipes are inclined, the drying cylinder 1 is rotatably connected with a rotating rod 6, and a plurality of groups of stirring plates 7 are arranged at equal intervals on the outer wall of the rotating rod 6, the upper end surface of the fixed plate 2 is rotatably connected with a reciprocating screw 11, the reciprocating screw 11 and the rotating rod 6 are located on the same central axis, the reciprocating screw 11 is connected with a connecting plate 14 through a connecting mechanism, the rotating rod 6 is rotatably connected to the lower end surface of the connecting plate 14, and the connecting mechanism includes a thread A screw sleeve 12 is connected to the threaded section of the reciprocating screw 11, and two groups of connecting rods 13 are fixedly connected to the lower end surface of the screw sleeve 12. The two groups of connecting rods 13 are both slidably connected to the fixed plate 2, and their ends are fixedly connected to the connecting plate 14. When drying the plastic particles, the reciprocating screw 11 can drive the connecting plate 14 to slide up and down, and the servo motor 15 can be used to drive the rotating rod 6 to rotate, which can increase the stirring range of the stirring plate 7, improve the uniformity of drying the plastic particles, and ensure the quality of injection molding. It should be noted that the connection method, installation method, and technical functions of the set dryer 3 are mature technologies and have nothing to do with the design purpose of this scheme, so they will not be described in detail.

[0021] Reference Figure 2 and Figure 3 The bottom of the guide tube 4 is rotatably connected to a feed auger 16, and the upper end surface of the guide tube 4 is rotatably connected to a transmission wheel 8, which is coaxially fixedly connected to the feed auger 16. During drying, the feed auger 16 can transfer the injection molding particles at the lower end of the drying cylinder 1 to the top of the drying cylinder 1, so that the injection molding particles in the drying cylinder 1 are in a flowing state, thereby further improving the drying effect.

[0022] Reference Figure 1 and Figure 2 The end of the reciprocating screw 11 is fixedly connected with a transmission wheel 2 10, and the transmission wheel 2 10 is connected to the transmission wheel 1 8 through a transmission belt 9. When the feeding auger 16 rotates, the reciprocating screw 11 can be synchronously driven to rotate with the help of the set transmission wheel 1 8 and the transmission wheel 2 10.

[0023] Reference Figure 1 and Figure 2The lower end surface of the guide tube 4 and the upper end surface of the connecting plate 14 are respectively installed with a servo motor 15 and a servo motor 2 15. The output shaft of the servo motor 15 is coaxially fixedly connected to the feeding auger 16. The servo motor 2 15 is coaxially fixedly connected to the rotating rod 6. The height of the feeding auger 16 is higher than the height of the rotating rod 6. The radius of the transmission wheel 2 10 is larger than the radius of the reciprocating screw 11, so that the screw sleeve 12 can be prevented from detaching when sliding.

[0024] In the utility model, when the device is used, plastic particles are poured from the top of the drying cylinder 1, the drying machine 3 is started, and the drying machine 3 blows hot air into the drying cylinder 1, and then the servo motor 1 5 and the servo motor 2 15 are started, and the output shaft of the servo motor 1 5 drives the feeding auger 16 to rotate, and the output shaft of the servo motor 2 15 drives the rotating rod 6 and the multiple groups of stirring plates 7 on the outer wall thereof to rotate, so as to stir the plastic particles in the drying cylinder 1, and at the same time, the plastic particles at the bottom can enter the guide pipe 4 through the connecting pipe, and be transported to the top of the drying cylinder 1 through the feeding auger 16, and in this process, with the help of the transmission wheel 1 8 and the transmission wheel 2 10, when the feeding auger 16 rotates, the reciprocating screw 11 is synchronously driven to rotate, and then the screw sleeve 12 on the threaded section drives the connecting plate 14 to slide up and down, and when sliding, the stirring range can be increased in conjunction with the rotation of the stirring plate 7, so as to improve the uniformity of drying the plastic particles and ensure the quality of injection molding, and at the same time, the plastic particles in the drying cylinder 1 are always in a flowing state, so as to further improve the drying effect.

[0025] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. An injection molding drying and feeding device, comprising a drying drum (1) and a drying machine (3), characterized in that: The upper end of the drying cylinder (1) is in an open state, and the drying machine (3) is installed on the outer wall of the drying cylinder (1). The outer wall of the drying cylinder (1) is fixedly connected with a fixed plate (2) and a material guide pipe (4). The material guide pipe (4) is connected to the inside of the drying cylinder (1) through two groups of connecting pipes, and the two groups of connecting pipes are both inclined. A rotating rod (6) is rotatably connected inside the drying cylinder (1), and a plurality of stirring plates (7) are arranged at equal intervals on the outer wall of the rotating rod (6). The upper end surface of the fixed plate (2) is rotatably connected with a reciprocating screw (11), and the reciprocating screw (11) and the rotating rod (6) are located on the same central axis. The reciprocating screw (11) is connected to a connecting plate (14) through a connecting mechanism, and the rotating rod (6) is rotatably connected to the lower end surface of the connecting plate (14).

2. The injection molding drying and feeding device according to claim 1, characterized in that: The connecting mechanism comprises a screw sleeve (12) threadedly connected to a threaded section of a reciprocating screw (11), and two groups of connecting rods (13) are fixedly connected to the lower end surface of the screw sleeve (12). Both groups of connecting rods (13) are slidably connected to a fixed plate (2), and their ends are fixedly connected to a connecting plate (14).

3. The injection molding drying and feeding device according to claim 2, characterized in that: The bottom of the material guide pipe (4) is rotatably connected to a material conveying auger (16), and the upper end surface of the material guide pipe (4) is rotatably connected to a transmission wheel (8), and the transmission wheel (8) is coaxially and fixedly connected to the material conveying auger (16).

4. The injection molding drying and feeding device according to claim 3, characterized in that: The end of the reciprocating screw (11) is fixedly connected to a second transmission wheel (10), and the second transmission wheel (10) is connected to the first transmission wheel (8) via a transmission belt (9).

5. The injection molding drying and feeding device according to claim 4, characterized in that: A servo motor 1 (5) and a servo motor 2 (15) are respectively mounted on the lower end surface of the material guide pipe (4) and the upper end surface of the connecting plate (14); the output shaft of the servo motor 1 (5) is coaxially fixedly connected to the material feeding auger (16); and the servo motor 2 (15) is coaxially fixedly connected to the rotating rod (6).

6. The injection molding drying and feeding device according to claim 5, characterized in that: The height of the feeding auger (16) is higher than that of the rotating rod (6), and the radius of the second transmission wheel (10) is greater than the radius of the reciprocating screw (11).

Images