Plastic particle feeding pretreatment device for injection molding machine

Abstract

The utility model discloses a plastic particle feeding pretreatment device for an injection molding machine, and relates to the technical field of injection molding machines, the plastic particle feeding pretreatment device comprises a box body, a preheating pipe is fixedly mounted in the box body, a conveying mechanism is arranged in the preheating pipe, the upper surface of the preheating pipe is communicated with a feeding pipe, and the upper surface of the feeding pipe is fixedly connected with a material barrel; according to the plastic particle pretreatment device, due to the fact that the high-frequency vibration mechanism is arranged, high-frequency vibration and knocking can be conveniently conducted on the screen barrel, plastic particles are prevented from blocking screen holes, the screening efficiency is improved, and therefore the working efficiency of the whole pretreatment device is effectively improved; by arranging the conveying mechanism, the plastic particles can flow more uniformly in the preheating pipe, so that the plastic particles can achieve an ideal preheating effect, and the pretreatment effect of the pretreatment device is improved.

Description

Technical Field

[0001] This application relates to the field of injection molding machine technology, and in particular to a plastic particle feeding pretreatment device for injection molding machines. Background Technology

[0002] The plastic particle pretreatment device for injection molding machines is mainly used to process plastic particles before they enter the injection molding machine, including drying, screening, and preheating. Its purpose is to improve the quality of plastic particles, ensure the smooth progress of the injection molding process, and thus improve the quality of plastic products.

[0003] Regarding the aforementioned technologies, the inventors believe that existing plastic particle feeding pretreatment devices for injection molding machines, when screening plastic particles, are prone to clogging the screen barrel due to the limited frequency of screening, which affects screening efficiency. Low screening efficiency reduces the overall working efficiency of the pretreatment device. Utility Model Content

[0004] The purpose of this application is to provide a plastic particle pretreatment device for injection molding machines to improve the problem of low screening efficiency of plastic particles in pretreatment devices.

[0005] The technical solution of the plastic particle feeding pretreatment device for injection molding machines provided in this application is as follows:

[0006] A plastic particle pretreatment device for injection molding machines includes a housing. A preheating pipe is fixedly installed inside the housing. A conveying mechanism is provided inside the preheating pipe. A feeding pipe is connected to the upper surface of the preheating pipe, and a material hopper is fixedly connected to the upper surface of the feeding pipe. A sieve hopper is movably connected inside the material hopper. A high-frequency vibration mechanism for use with the sieve hopper is provided inside the housing. The high-frequency vibration mechanism includes parallel circular rods rotatably connected to the housing. A sprocket is fixedly connected to the end of the circular rod, and the sprockets are meshed together. The box has a chain, and a protective shell is fixedly connected to one side of the box. A servo motor is fixedly installed on one side of the protective shell. The output end of the servo motor passes through the protective shell and is fixedly connected to one of the sprockets. A movable rod is hinged to the eccentric end of the eccentric wheel away from the round rod. A moving rod is hinged to the end of the movable rod away from the eccentric wheel. Both sides of the movable rod are hinged to the moving rod through a rotating shaft. A guide frame for use with the moving rod is fixedly connected to the inner wall of the box. The end of the moving rod passes through the guide frame and is fixedly connected to a vibrating rod for use with the screen barrel.

[0007] By adopting the above technical solution, the servo motor drives the sprocket to rotate, which in turn drives the round rod to rotate synchronously via the chain. This causes the eccentric wheel to rotate, which in turn drives the movable rod to move. This, in turn, pushes the moving rod to make reciprocating linear motion under the guidance of the guide frame. Ultimately, this causes the vibrating rod to vibrate the screen barrel at a high frequency, effectively preventing plastic particles from clogging the screen holes, improving screening efficiency, and thus enhancing the working efficiency of the entire pretreatment device.

[0008] Optionally, the conveying mechanism includes a positioning sleeve, which is fixedly installed on one side of the housing. A stepper motor is fixedly installed on one side of the positioning sleeve, and the output end of the stepper motor passes through the positioning sleeve and is fixedly connected to a circular plate. A rotating column is fixedly connected to the end of the circular plate facing away from the output end of the stepper motor, and the rotating column passes through a preheating pipe and is fixedly connected to an auger conveyor.

[0009] By adopting the above technical solution, the stepper motor drives the circular plate to rotate, and the circular plate drives the auger conveyor to rotate inside the preheating tube through the rotating column, so that the plastic particles flow evenly in the preheating tube, avoiding uneven flow and ensuring that the plastic particles achieve the ideal preheating effect, thereby improving the pretreatment effect of the pretreatment device.

[0010] Optionally, a rectangular array of support rods is fixedly connected to the lower surface of the housing, and a mounting plate is fixedly connected to the bottom end of the support rods.

[0011] By adopting the above technical solution, the support rod and mounting plate provide a stable support structure for the entire device, ensuring the stability of the device during operation and preventing the normal operation of each component from being affected by the shaking of the device.

[0012] Optionally, the inner wall of the box is fixedly connected to a fixing frame for use with the material barrel, and the fixing frame is fixedly sleeved on the outer surface of the material barrel.

[0013] By adopting the above technical solution, the fixing frame firmly fixes the material bucket in a specific position inside the box, preventing the material bucket from shifting or shaking during the operation of the device.

[0014] Optionally, a positioning ring is fixedly sleeved on the outer surface of the round rod, and the positioning ring is rotatably connected to the housing.

[0015] By adopting the above technical solution, the positioning ring plays a supporting role for the round rod, preventing the round rod from moving around during rotation.

[0016] Optionally, one end of the vibrating rod facing away from the moving rod passes through the material bucket.

[0017] By adopting the above technical solution, the vibrating rod can directly contact the screen barrel, effectively transmitting high-frequency vibration force to the screen barrel, and maximizing the effect of preventing screen hole blockage.

[0018] Optionally, the circular plate is rotatably connected to the positioning sleeve.

[0019] By adopting the above technical solution, the positioning sleeve ensures the stability of the circular plate during rotation and prevents the circular plate from shifting during rotation.

[0020] Optionally, a support base for use with a stepper motor is fixedly connected to one side of the housing, and the stepper motor is fixedly mounted on the upper surface of the support base.

[0021] By adopting the above technical solution, the support base provides a stable mounting foundation for the stepper motor, enhancing the stability of the stepper motor during operation.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. This utility model, by setting a high-frequency vibration mechanism, facilitates high-frequency vibration of the screen barrel, preventing plastic particles from clogging the screen holes, improving screening efficiency, and thus effectively improving the working efficiency of the entire pretreatment device. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the cross-sectional structure of the high-frequency vibration mechanism of this utility model;

[0027] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0028] Figure 5 This is a cross-sectional structural diagram of the conveying mechanism of this utility model.

[0029] In the diagram, 1. Box body; 2. High-frequency vibration mechanism; 21. Round rod; 22. Eccentric wheel; 23. Movable rod; 24. Guide frame; 25. Moving rod; 26. Vibrating rod; 27. Positioning ring; 28. Chain; 29. ​​Servo motor; 202. Protective shell; 203. Sprocket; 3. Conveying mechanism; 31. Positioning sleeve; 32. Stepper motor; 33. Support base; 34. Round plate; 35. Rotary column; 36. Screw conveyor; 4. Fixed frame; 5. Material bucket; 6. Mounting plate; 7. Support rod; 8. Preheating pipe; 9. Screen bucket; 10. Feed pipe. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0031] A pretreatment device for feeding plastic particles into an injection molding machine, as described in the following description. Figure 1 and Figure 2 The device includes a housing 1, support rods 7, mounting plate 6, preheating pipe 8, conveying mechanism 3, feed pipe 10, material hopper 5, fixing frame 4, screen hopper 9, and high-frequency vibration mechanism 2. The support rods 7 are fixedly connected in a rectangular array to the lower surface of the housing 1, providing support for the housing 1. The mounting plate 6 is fixedly connected to the bottom end of the support rods 7, facilitating the installation of the pretreatment device in a suitable position and preventing it from shaking during operation. The preheating pipe 8 is located inside the housing 1, generating heat through heating elements and transferring it to the plastic particles in contact with it through the pipe wall for preheating. The conveying mechanism 3 is located inside the preheating pipe 8, facilitating the uniform conveying of plastic particles within the preheating pipe 8 and improving the preheating efficiency of the plastic particles. As a result, the feed pipe 10 is connected to the preheating pipe 8, and the material bucket 5 is fixedly connected to the upper surface of the feed pipe 10, so that the plastic particles screened in the material bucket 5 can pass through the feed pipe 10 and into the preheating pipe 8. The fixing frame 4 is fixedly sleeved on the outer surface of the material bucket 5 and fixedly connected to the inner wall of the box 1. The setting of the fixing frame 4 makes the material bucket 5 more stable. The screen bucket 9 is movably set inside the material bucket 5 by bolt connection. The movable setting makes it easy to replace the screen bucket 9 according to the actual situation. The outer surface of the screen bucket 9 is a porous mesh. The high-frequency vibration mechanism 2 is set inside the box 1. The high-frequency vibration mechanism 2 is used in conjunction with the screen bucket 9. The high-frequency vibration mechanism 2 used in conjunction with the screen bucket 9 makes the screening efficiency higher, thereby improving the overall efficiency of the pretreatment device.

[0032] Reference Figure 3 and Figure 4The high-frequency vibration mechanism 2 includes a parallel circular rod 21, a positioning ring 27, a sprocket 203, a chain 28, a protective shell 202, a servo motor 29, an eccentric wheel 22, a movable rod 23, a moving rod 25, a guide frame 24, and a vibrating rod 26. The circular rod 21 is rotatably connected to the housing 1. The positioning ring 27 is fixedly sleeved on the outer surface of the circular rod 21. The positioning ring 27 and the housing 1 are rotatably connected through a bearing seat and a bearing. The positioning ring 27 ensures the stability of the circular rod 21 during rotation and prevents it from shifting. One side of the sprocket 203 is fixedly connected to the end of the circular rod 21. The chain 28 is meshed between the sprockets 203, so that the rotation of one sprocket 203 drives the other sprocket 203 to rotate. The protective shell 202 is fixedly connected to one side of the housing 1. The servo motor 29 is fixedly installed on one side of the protective shell 202. The output of the servo motor 29... The end of the servo motor 29 passes through the protective shell 202 and is fixedly connected to one of the sprockets 203, so that the output end of the servo motor 29 can drive one of the sprockets 203 to rotate. The eccentric wheel 22 is fixedly connected to the end of the round rod 21 facing away from the sprocket 203, so that the rotation of the round rod 21 can drive the eccentric wheel 22 to rotate. The movable rod 23 is hinged to the eccentric part of the eccentric wheel 22 facing away from the round rod 21 through a rotating shaft. The moving rod 25 is hinged to the movable rod 23 through a rotating shaft. The guide frame 24 is fixedly connected to the inner wall of the box 1. The end of the moving rod 25 passes through the guide frame 24 and is fixedly connected to the vibrating rod 26. The end of the vibrating rod 26 facing away from the moving rod 25 passes through the material bucket 5. Through the coordinated use of the eccentric wheel 22, the movable rod 23, the moving rod 25 and the vibrating rod 26, the vibrating rod 26 can vibrate the screen bucket 9 at a high frequency, effectively preventing plastic particles from clogging the screen holes, improving screening efficiency, and thus improving the working efficiency of the entire pretreatment device.

[0033] Reference Figure 5 The conveying mechanism 3 includes a positioning sleeve 31, a support base 33, a circular plate 34, a rotating column 35, and an auger conveyor 36. The positioning sleeve 31 is fixedly installed on one side of the housing 1, and the support base 33 is fixedly installed on one side of the positioning sleeve 31. A stepper motor 32 is fixedly installed on the upper surface of the support base 33, which provides stable support for the stepper motor 32. The output end of the stepper motor 32 passes through the positioning sleeve 31 and is fixedly connected to the circular plate 34, facilitating the rotation of the circular plate 34 by the output end of the stepper motor 32. The circular plate 34 is rotatably connected to the positioning sleeve 31. The positioning sleeve 31 ensures the stability of the circular plate 34 when it rotates. The end of the circular plate 34 facing away from the output end of the stepper motor 32 is fixedly connected to the rotating column 35, so that the circular plate 34 can rotate to drive the rotating column 35 to rotate. The rotating column 35 passes through the preheating pipe 8 and is fixedly connected to the auger conveyor 36, so that the rotating column 35 can rotate to drive the spiral auger conveyor 36 to rotate and uniformly convey the plastic particles, so that the plastic particles flow evenly in the preheating pipe 8, thereby improving the pretreatment effect of the pretreatment device.

[0034] The implementation principle of this application embodiment is as follows: First, the suitable screen 9 is installed in the material bucket 5, and then the plastic particles are poured into the screen 9 in the material bucket 5. The fixing frame 4 enables the material bucket 5 to be placed stably.

[0035] At this time, the servo motor 29 is started by the high-frequency vibration mechanism 2, and its output end drives the sprocket 203 connected to it to rotate. Through the meshing transmission of the chain 28, the round rod 21, which is set in parallel and rotates to be connected to the housing 1, rotates synchronously. The positioning ring 27 ensures the stability of the round rod 21 when it rotates.

[0036] The round rod 21 drives the eccentric wheel 22 to rotate, and the movable rod 23, which is hinged at the eccentric part of the eccentric wheel 22, moves. The movable rod 25, which is hinged on both sides of the movable rod 23 through a rotating shaft, moves back and forth in a straight line under the guidance of the guide frame 24 fixed on the inner wall of the box 1.

[0037] The moving rod 25 drives the vibrating rod 26 to perform reciprocating linear motion. The vibrating rod 26 vibrates the screen barrel 9 at a high frequency to prevent plastic particles from clogging the screen holes. This allows plastic particles that meet the size requirements to pass through the screen holes and fall into the preheating pipe 8 through the feed pipe 10, thus improving the problem of low screening efficiency for plastic particles.

[0038] Meanwhile, the plastic particles falling into the preheating pipe 8 flow evenly under the action of the conveying mechanism 3. The stepper motor 32 is started, and its output end drives the circular plate 34 to rotate. The circular plate 34 rotates in the positioning sleeve 31. The rotation of the circular plate 34 drives the auger conveyor 36 to rotate in the preheating pipe 8 through the rotating column 35, so that the plastic particles flow evenly in the preheating pipe 8 and achieve the ideal preheating effect.

[0039] Throughout the operation of the device, the support rod 7 and the mounting plate 6 provide stable support for the device, enabling efficient screening and preheating of plastic particles, and improving the working efficiency and pretreatment effect of the entire plastic particle feeding pretreatment device for injection molding machines.

[0040] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A plastic particle feeding pretreatment device for injection molding machines, comprising a housing (1), characterized in that: A preheating pipe (8) is fixedly installed inside the box (1). A conveying mechanism (3) is provided inside the preheating pipe (8). A feed pipe (10) is connected to the upper surface of the preheating pipe (8). A material bucket (5) is fixedly connected to the upper surface of the feed pipe (10). A screen bucket (9) is movably connected inside the material bucket (5). A high-frequency vibration mechanism (2) is provided inside the box (1) to cooperate with the screen bucket (9). The high-frequency vibration mechanism (2) includes parallel circular rods (21), which are rotatably connected to the housing (1). A sprocket (203) is fixedly connected to the end of the circular rod (21), and a chain (28) is meshed between the sprockets (203). A protective shell (202) is fixedly connected to one side of the housing (1), and a servo motor (29) is fixedly installed on one side of the protective shell (202). The output end of the servo motor (29) passes through the protective shell (202) and is fixedly connected to one of the sprockets (203). Next, an eccentric wheel (22) is fixedly connected to one end of the round rod (21) facing away from the sprocket (203). A movable rod (23) is hinged to the eccentric end of the eccentric wheel (22) away from the round rod (21). A moving rod (25) is hinged to the end of the movable rod (23) away from the eccentric wheel (22). A guide frame (24) for use with the moving rod (25) is fixedly connected to the inner wall of the box (1). The end of the moving rod (25) passes through the guide frame (24) and is fixedly connected to a vibrating rod (26) for use with the sieve barrel (9).

2. The plastic particle feeding pretreatment device for injection molding machines according to claim 1, characterized in that: The conveying mechanism (3) includes a positioning sleeve (31), which is fixedly installed on one side of the housing (1). A stepper motor (32) is fixedly installed on one side of the positioning sleeve (31), and the output end of the stepper motor (32) passes through the positioning sleeve (31) and is fixedly connected to a circular plate (34). A rotating column (35) is fixedly connected to one end of the circular plate (34) facing away from the output end of the stepper motor (32), and the rotating column (35) passes through the preheating pipe (8) and is fixedly connected to an auger conveyor (36).

3. The plastic particle feeding pretreatment device for injection molding machines according to claim 1, characterized in that: The lower surface of the box (1) is fixedly connected to a rectangular array of support rods (7), and the bottom end of the support rods (7) is fixedly connected to a mounting plate (6).

4. The plastic particle feeding pretreatment device for injection molding machines according to claim 1, characterized in that: The inner wall of the box (1) is fixedly connected to a fixing frame (4) for use with the material barrel (5), and the fixing frame (4) is fixedly sleeved on the outer surface of the material barrel (5).

5. The plastic particle feeding pretreatment device for injection molding machines according to claim 1, characterized in that: A positioning ring (27) is fixedly sleeved on the outer surface of the round rod (21), and the positioning ring (27) is rotatably connected to the box body (1).

6. The plastic particle feeding pretreatment device for injection molding machines according to claim 1, characterized in that: The vibrating rod (26) has one end facing away from the moving rod (25) that passes through the material bucket (5).

7. A plastic particle feeding pretreatment device for an injection molding machine according to claim 2, characterized in that: The circular plate (34) is rotatably connected to the positioning sleeve (31).

8. A plastic particle feeding pretreatment device for an injection molding machine according to claim 2, characterized in that: A support base (33) for use with a stepper motor (32) is fixedly connected to one side of the housing (1), and the stepper motor (32) is fixedly installed on the upper surface of the support base (33).

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