Feeding device for injection molding production of flame-retardant master batch

Abstract

The invention relates to the technical field of powdery material adding, and particularly discloses a feeding device for flame-retardant master batch injection molding production, the feeding device comprises a pipeline capable of conveying materials, the rear end of the pipeline is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a screw rod, and the screw rod is located in the pipeline; a feed hopper is arranged at the upper end of the annular outer surface of the pipeline, a vibration guide plate is driven by a star wheel to fluctuate up and down in the rotating state of a screw, the vibration guide plate forces the feed hopper and a butt joint pipe to fluctuate up and down, and internal materials are in an upward throwing state and a downward falling state due to vibration of the vibration guide plate; according to the feeding hopper, kinetic energy is increased in the discharging process of materials, the situation that the discharging portion is blocked can be effectively reduced, meanwhile, under the cooperation of the rotary sliding block and the rotary sliding groove, the feeding hopper can rotate in the rising process, be matched with the shaking rod, slide on the inner surface of the butt joint pipe and scrape the materials, and the situation that the materials are blocked at the discharging portion of the butt joint pipe is further avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of powder material addition, and specifically to a feeding device for the injection molding production of flame retardant masterbatch. Background Art

[0002] A flame retardant masterbatch is a functional plastic additive that evenly disperses a high concentration of flame retardant in a resin carrier and is used to improve the flame retardant performance of the matrix material. First, the resin and lubricant need to be mixed, and then the flame retardant and dispersant (to avoid dust flying) are gradually added. The mixed material enters an injection mold for pelletizing. Most of the existing feeding devices use screw feeding, and control the volumetric flow rate of the material by changing the screw speed. This feeding method is simple and fast, but the screw feeding area is prone to blockage due to the accumulation of materials. Once blocked, the material entering the screw is not uniform enough, resulting in errors in the material transportation, and the volumetric flow rate of the material cannot be controlled by changing the screw speed, thus leading to... Therefore, we propose a feeding device for the injection molding production of flame retardant masterbatch. Summary of the Invention

[0003] The purpose of the present invention is to provide a feeding device for the injection molding production of flame retardant masterbatch to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A feeding device for the injection molding production of flame retardant masterbatch, including a pipeline capable of transporting materials. The rear end of the pipeline is fixedly connected to a driving motor, and the front end of the pipeline is fixedly connected to an injection mold for producing flame retardant masterbatch. The output end of the driving motor is fixedly connected to a screw, and the screw is located inside the pipeline. An inlet hopper is provided at the upper end of the annular outer surface of the pipeline. A guiding connection pipe is fixedly connected to the position of the pipeline corresponding to the inlet hopper. A vibration guiding mechanism for controlling the vibration of the inlet hopper is provided outside the inlet hopper and the guiding connection pipe. The vibration guiding mechanism drives the inlet hopper to vibrate as the screw rotates, preventing material blockage at the feeding part. A docking pipe is fixedly connected to the lower opening of the inlet hopper. The docking pipe is inserted into the guiding connection pipe, and a rotating slip ring is provided between the docking pipe and the guiding connection pipe. The rotating slip ring can follow the vibration of the inlet hopper, forcing the inlet hopper to rotate to further prevent material blockage.

[0005] Among them, the vibration guiding mechanism includes a star wheel. The star wheel is fixedly connected to the annular outer surface of the screw. The star wheel is designed with a multi - angular star - shaped structure, and its surface is designed with an arc structure. A runner contacts the arc - shaped outer surface of the star wheel. A conduction rod is movably inserted through the outer surface of the pipeline. The conduction rod is rotatably connected to the runner. The upper end of the conduction rod is fixedly connected to a vibration guiding plate, and the vibration guiding plate is connected to the inlet hopper.

[0006] Among them, the upper edge of the guiding connecting pipe extends outward as a whole in a "T" - shaped structure design. A connecting sleeve is fixedly connected between the extended part of the guiding connecting pipe and the pipeline, and the conducting rod slides inside the connecting sleeve.

[0007] Among them, guide holes are formed on the outer surface of the vibration - guiding plate. Guide rods are fixedly connected to the corresponding positions on the outer surface of the upper end of the guiding connecting pipe. The guide rods pass through the guide holes, and a spring is fixedly connected between the vibration - guiding plate and the guiding connecting pipe.

[0008] Among them, the screw rod consists of a smooth section and a spiral section. The smooth section is fixedly connected to the output end of the driving motor. A mechanical seal is connected between the smooth section and the pipeline. One end of the smooth section far from the driving motor is fixedly connected to the spiral section. The star wheel is located on the left side of the mechanical seal, and the guiding connecting pipe is located on the right side of the mechanical seal.

[0009] Among them, the vibration - guiding plate is designed in a circular - ring structure. The inner circular surface of the vibration - guiding plate is rotatably connected to the feed hopper through a bearing. A rotating slider is connected to the outer circular surface of the docking pipe. A spiral sliding groove is formed at the corresponding position on the inner circular surface of the guiding connecting pipe for the rotating slider. A shaking rod is fixedly connected to the inner circular surface of the guiding connecting pipe, and the spiral sliding groove is designed in a spiral structure.

[0010] Among them, the shaking rod fits the inner surfaces of the feed hopper and the docking pipe, and the shaking rod is made of an elastic material.

[0011] Among them, the docking pipe and the rotating slider are rotatably connected through a rotating sliding ring. The rotating sliding ring includes an inner ring and an outer ring. The inner ring and the outer ring are rotatably connected through a bearing. A clamping groove is formed on the outer circular surface of the inner ring. A clamping plate is rotatably connected to the corresponding position on the inner surface of the outer ring through a rotating shaft. The rotating slider is fixedly connected to the outer surface of the outer ring, and the inner circular surface of the inner ring is fixedly connected inside the groove formed on the surface of the docking pipe.

[0012] Among them, the vibration - guiding mechanism further includes a star plate. The star plate is fixedly connected to the outer circular surface of the screw rod. A wave - shaped groove that is connected end - to - end is formed on the end face of the star plate. A transmission wheel slides inside the wave - shaped groove. The end of the transmission wheel is rotatably connected to the conducting rod. The vibration - guiding mechanism further includes a star plate. The star plate is fixedly connected to the outer circular surface of the screw rod. A wave - shaped groove that is connected end - to - end is formed on the end face of the star plate. A transmission wheel slides inside the wave - shaped groove. The end of the transmission wheel is rotatably connected to the conducting rod.

[0013] The present invention has at least the following beneficial effects: By setting up a vibration guiding mechanism, when the screw rotates, the star wheel drives the vibration guiding plate to rise and fall. The vibration guiding plate forces the feed hopper and the docking pipe to vibrate up and down. The materials inside are in a state of being thrown up and falling down due to the vibration of the vibration guiding plate, increasing the kinetic energy of the materials during the feeding process, which can effectively reduce the blockage at the discharging part. At the same time, with the cooperation of the rotating slider and the rotating chute, the feed hopper can rotate during the rising stage, cooperate with the shaking rod, and slide on the inner surface of the docking pipe to scrape the materials, further preventing the materials from blocking at the discharging part of the docking pipe. Brief Description of the Drawings

[0014] Figure 1 Schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the structure of the feed hopper and the pipe of the present invention in section; Figure 3 Schematic diagram of the structure of the feed hopper and the guiding connecting pipe of the present invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of part A in the present invention; Figure 5 Exploded schematic diagram of the vibration guiding structure of the present invention; Figure 6 Schematic diagram of the structure of the wave groove of the present invention; Figure 7 Schematic diagram of the structure of the guiding connecting pipe and the rotating slip ring of the present invention; Figure 8 Exploded schematic diagram of the rotating slip ring of the present invention; Figure 9 For the present invention Figure 7 Enlarged schematic diagram of part B in the present invention.

[0015] In the figure: 1, injection mold; 10, pipe; 11, screw; 111, smooth section; 112, spiral section; 12, feed hopper; 13, drive motor; 14, shaking rod; 3, vibration guiding mechanism; 30, guiding connecting pipe; 31, docking pipe; 32, vibration guiding plate; 33, spring; 34, guiding rod; 35, conduction rod; 36, connecting sleeve; 37, runner; 38, star wheel; 39, mechanical seal; 40, guiding hole; 41, rotating chute; 42, groove; 5, rotating slip ring; 50, outer ring; 51, rotating slider; 52, inner ring; 53, clamping groove; 54, clamping plate; 60, star plate; 61, wave groove; 62, transmission wheel. Detailed Description of the Invention

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0017] Embodiment 1 Please refer to Figures 1-9 , the present invention provides a technical solution: a feeding device for the injection molding production of flame retardant masterbatch, including a pipeline 10 that can transport materials, which transports the materials required for the flame retardant masterbatch through the discharge of the pipeline 10. A driving motor 13 is fixedly connected to the rear end of the pipeline 10, and an injection molding die 1 for producing the flame retardant masterbatch is fixedly connected to the front end of the pipeline 10. The output end of the driving motor 13 is fixedly connected to a screw 11. The screw 11 is located inside the pipeline 10. An inlet hopper 12 is provided at the upper end of the annular outer surface of the pipeline 10 for adding materials. The discharge port of the pipeline 10 is connected to the injection molding die 1; A guiding connection pipe 30 is fixedly connected to the position of the pipeline 10 corresponding to the inlet hopper 12. A vibration guiding mechanism 3 for controlling the vibration of the inlet hopper 12 is provided outside the inlet hopper 12 and the guiding connection pipe 30. The vibration guiding mechanism 3 drives the inlet hopper 12 to vibrate as the screw 11 rotates, preventing material blockage at the feeding part and making the materials falling inside the inlet hopper 12 as uniform as possible, thereby improving the feeding accuracy; A docking pipe 31 is fixedly connected to the lower opening of the inlet hopper 12. The docking pipe 31 is inserted into the guiding connection pipe 30, and a rotating slip ring 5 is provided between the docking pipe 31 and the guiding connection pipe 30. The rotating slip ring 5 can follow the vibration of the inlet hopper 12, forcing the inlet hopper 12 to rotate to further prevent material blockage, so that the materials have more kinetic energy during the falling process, effectively reducing blockage and improving the feeding accuracy.

[0018] The vibration guiding mechanism 3 includes a star wheel 38, which is fixedly connected to the annular outer surface of the screw 11. The star wheel 38 is designed with a multi-angle star shape structure, and its surface is designed with an arc structure. A runner 37 is in contact with the arc-shaped outer surface of the star wheel 38. A conduction rod 35 is movably inserted through the outer surface of the pipeline 10. The conduction rod 35 is rotatably connected to the runner 37. The upper end of the conduction rod 35 is fixedly connected to a vibration guiding plate 32, and the vibration guiding plate 32 is connected to the inlet hopper 12; The star wheel 38 rotates synchronously with the screw 11. The arc part and the protruding part on its surface will contact the runner 37. The runner 37 will drive the conduction rod 35 to move up and down, forcing the vibration guiding plate 32 and the inlet hopper 12 to vibrate up and down, increasing the potential energy of the internal materials, so that the materials have greater kinetic energy during the falling process and impact on the discharge port of the inlet hopper 12, effectively reducing the blockage situation.

[0019] The upper edge of the guide tube 30 extends outward and has an overall "T"-shaped structure design, which is similar to a flange. A connecting sleeve 36 is fixedly connected between the extended part of the guide tube 30 and the pipeline 10, and the conduction rod 35 slides inside the connecting sleeve 36 to increase the stability of the conduction rod 35.

[0020] A guide hole 40 is provided on the outer surface of the vibration guide plate 32, and a guide rod 34 is fixedly connected to the outer surface of the upper end of the guide tube 30 at a position corresponding to the guide hole 40. The guide rod 34 passes through the guide hole 40, and a spring 33 is fixedly connected between the vibration guide plate 32 and the guide tube 30 to increase the stability of the vibration guide plate 32.

[0021] The screw 11 consists of a smooth section 111 and a spiral section 112. The smooth section 111 is fixedly connected to the output end of the drive motor 13. An organic seal 39 is connected between the smooth section 111 and the pipeline 10. The end of the smooth section 111 away from the drive motor 13 is fixedly connected to the spiral section 112. The star wheel 38 is located on the left side of the mechanical seal 39, and the guide tube 30 is located on the right side of the mechanical seal 39. The length of the screw 11 is fully utilized to make the entire structure more compact. The mechanical seal 39 blocks the material from entering the drive motor 13 through the pipeline 10, thereby improving the stability of the structure.

[0022] The vibration guide plate 32 is designed as a circular ring structure. The annular inner surface of the vibration guide plate 32 is rotatably connected to the feed hopper 12 through a bearing. The annular outer surface of the docking tube 31 is connected with a sliding block 51. The annular inner surface of the guide tube 30 and the corresponding position of the sliding block 51 are provided with a sliding groove 41. The annular inner surface of the guide tube 30 is fixedly connected with a shaking rod 14. The sliding groove 41 is designed as a spiral structure. When the vibration guide plate 32 and the feed hopper 12 move upward, the sliding groove 41 is fixed to the inner surface of the guide tube 30, and the sliding block 51 forces the feed hopper 12 and the docking tube 31 to rotate on the inner side of the vibration guide plate 32 through the bearing, and then the shaking rod 14 scratches the inner side of the feed hopper 12, further preventing the material from docking with the inside of the docking tube 31, effectively reducing the situation of material blockage.

[0023] The shaking rod 14 is fitted with the inner surface of the feed hopper 12 and the docking tube 31. The shaking rod 14 is made of elastic material. When the feed hopper 12 moves upward, it will deform itself, and the deformation will recover when it falls, thereby whipping the inner surface of the feed hopper 12 and the docking tube 31, generating vibrations and subtle gas shocks, further dredging the materials inside the docking tube 31 and the feed hopper 12, and reducing blockages.

[0024] The docking pipe 31 is rotatably connected to the rotating slider 51 through a rotating slip ring 5. The rotating slip ring 5 includes an inner ring 52 and an outer ring 50. The inner ring 52 is rotatably connected to the outer ring 50 through a bearing. A clamping groove 53 is formed on the annular outer surface of the inner ring 52. A clamping plate 54 is rotatably connected to the corresponding position of the inner surface of the outer ring 50 through a rotating shaft. The rotating slider 51 is fixedly connected to the outer surface of the outer ring 50. The annular inner surface of the inner ring 52 is fixedly connected to the inside of a groove 42 formed on the surface of the docking pipe 31. When the docking pipe 31 and the feed hopper 12 move upward, the rotating slider 51 moves obliquely upward along the spiral chute 41 under the guidance of the spiral chute 41. Due to the design of the clamping groove 53 and the clamping plate 54, the outer ring 50 and the inner ring 52 are locked in the clockwise direction, thereby driving the feed hopper 12 and the docking pipe 31 to rotate clockwise. When the feed hopper 12 and the docking pipe 31 move downward, the rotating slider 51 resets obliquely downward along the spiral chute 41. At this time, the clamping plate 54 and the clamping groove 53 are in a sliding state, and the feed hopper 12 and the docking pipe 31 can remain stationary. Through multiple operations, the feed hopper 12 and the docking pipe 31 rotate one week, and cooperate with the jitter rod 14 to sweep the materials on the inner surfaces of the docking pipe 31 and the feed hopper 12, further preventing material blockage.

[0025] Embodiment 2 The vibration guiding mechanism 3 further includes a star disk 60. The star disk 60 is fixedly connected to the annular outer surface of the screw rod 11. A wave groove 61 that is connected end to end is formed on the end face of the star disk 60. A transmission wheel 62 is slidably connected to the inside of the wave groove 61. The end of the transmission wheel 62 is rotatably connected to the conduction rod 35. Different from Embodiment 1, the screw rod 11 can have a faster rotation speed. The transmission wheel 62 will always move inside the wave groove 61. The response speed of the conduction rod 35 is improved through the constraint of the wave groove 61. One end of the smooth section 111 of the screw rod 11 away from the driving motor 13 is fixedly connected to one end of the star disk 60, and the other end of the star disk 60 is fixedly connected to the spiral section 112 of the screw rod 11.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

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

Claims

1. A feeding device for the injection molding production of flame retardant masterbatch, including a pipeline (10) capable of conveying materials. The rear end of the pipeline (10) is fixedly connected with a driving motor (13). The front end of the pipeline (10) is fixedly connected with an injection mold (1) for producing flame retardant masterbatch. The output end of the driving motor (13) is fixedly connected with a screw rod (11). The screw rod (11) is located inside the pipeline (10). An inlet hopper (12) is arranged at the upper end of the annular outer surface of the pipeline (10). It is characterized in that: A guiding connection pipe (30) is fixedly connected at the position corresponding to the pipeline (10) and the inlet hopper (12). A vibration guiding mechanism for controlling the vibration of the inlet hopper (12) is arranged outside the inlet hopper (12) and the guiding connection pipe (30). The vibration guiding mechanism drives the inlet hopper (12) to vibrate as the screw rod (11) rotates, preventing material blockage at the feeding part. A butt joint pipe (31) is fixedly connected at the lower end opening of the inlet hopper (12). The butt joint pipe (31) is inserted into the guiding connection pipe (30). A rotary slip ring (5) is arranged between the butt joint pipe (31) and the guiding connection pipe (30). The rotary slip ring (5) can follow the vibration of the inlet hopper (12), forcing the inlet hopper (12) to rotate to further prevent material blockage.

2. The feeding device for injection molding production of flame retardant masterbatch according to claim 1, wherein: The vibration guiding mechanism includes a star wheel (38). The star wheel (38) is fixedly connected to the annular outer surface of the screw rod (11). The star wheel (38) is designed with a multi - angular star shape structure, and its surface is designed with an arc structure. A runner (37) is in contact with the arc - shaped outer surface of the star wheel (38). A conduction rod (35) is movably inserted through the outer surface of the pipeline (10). The conduction rod (35) is rotatably connected to the runner (37). The upper end of the conduction rod (35) is fixedly connected with a vibration guiding plate (32). The vibration guiding plate (32) is connected to the inlet hopper (12).

3. The feeding device for the injection molding production of flame retardant masterbatch according to claim 2, characterized in that: The upper edge of the guiding connection pipe (30) extends outward as a whole in a "T" - shaped structure design. A connecting sleeve (36) is fixedly connected between the extended part of the guiding connection pipe (30) and the pipeline (10). The conduction rod (35) slides inside the connecting sleeve (36).

4. The feeding device for the injection molding production of flame retardant masterbatch according to claim 3, characterized in that: Guide holes (40) are formed on the outer surface of the vibration guiding plate (32). A guiding rod (34) is fixedly connected at the position corresponding to the guide holes (40) on the upper outer surface of the guiding connection pipe (30). The guiding rod (34) passes through the guide holes (40). A spring (33) is fixedly connected between the vibration guiding plate (32) and the guiding connection pipe (30).

5. The feeding device for injection molding production of flame retardant masterbatch according to claim 1, characterized in that: The screw rod (11) is composed of a smooth section (111) and a spiral section (112). The smooth section (111) is fixedly connected to the output end of the driving motor (13). A mechanical seal (39) is connected between the smooth section (111) and the pipeline (10). One end of the smooth section (111) far from the driving motor (13) is fixedly connected to the spiral section (112). The star wheel (38) is located on the left side of the mechanical seal (39), and the guiding connection pipe (30) is located on the right side of the mechanical seal (39).

6. The feeding device for injection molding production of flame retardant masterbatch according to claim 4, characterized in that: The vibration guide plate (32) is designed in a circular ring structure. The inner circular surface of the vibration guide plate (32) is rotatably connected to the feed hopper (12) through a bearing. A rotating slider (51) is connected to the outer circular surface of the docking pipe (31). A spiral chute (41) is provided at a position corresponding to the rotating slider (51) on the inner circular surface of the guide connection pipe (30). A shaking rod (14) is fixedly connected to the inner circular surface of the guide connection pipe (30). The spiral chute (41) is designed in a spiral structure.

7. The feeding device for injection molding production of flame retardant masterbatch according to claim 6, characterized in that: The shaking rod (14) is in contact with the inner surfaces of the feed hopper (12) and the docking pipe (31). The shaking rod (14) is made of an elastic material.

8. The feeding device for injection molding production of flame retardant masterbatch according to claim 7, characterized in that: The docking pipe (31) and the rotating slider (51) are rotatably connected through a rotating slip ring (5). The rotating slip ring (5) includes an inner ring (52) and an outer ring (50). The inner ring (52) and the outer ring (50) are rotatably connected through a bearing. A clamping groove (53) is provided on the outer circular surface of the inner ring (52). A clamping plate (54) is rotatably connected to a position corresponding to the clamping groove (53) on the inner surface of the outer ring (50) through a rotating shaft. The rotating slider (51) is fixedly connected to the outer surface of the outer ring (50). The inner circular surface of the inner ring (52) is fixedly connected inside a groove (42) provided on the surface of the docking pipe (31).

9. The feeding device for injection molding production of flame retardant masterbatch according to claim 2, characterized in that: The vibration guide mechanism further includes a star plate (60). The star plate (60) is fixedly connected to the outer circular surface of the screw rod (11). A wave groove (61) that is connected end to end is provided on the end face of the star plate (60). A transmission wheel (62) is slidably connected inside the wave groove (61). The end of the transmission wheel (62) is rotatably connected to the conduction rod (35). The vibration guide mechanism further includes a star plate (60). The star plate (60) is fixedly connected to the outer circular surface of the screw rod (11). A wave groove (61) that is connected end to end is provided on the end face of the star plate (60). A transmission wheel (62) is slidably connected inside the wave groove (61). The end of the transmission wheel (62) is rotatably connected to the conduction rod (35).

Images