Injection molding color master batch adding device

Abstract

The utility model relates to the technical field of injection molding machine equipment, and discloses an injection molding color master batch adding device which comprises a feeding hopper, a feeding pipe is fixedly connected to the bottom of the feeding hopper, a rotating shaft is rotatably connected to the interior of the feeding pipe, a material distributing piece is fixedly connected to the outer surface of the rotating shaft, and a coupler is connected to one end of the rotating shaft. One end of the coupler is connected with a stepping motor, and the outer surface of the feeding pipe is fixedly connected with a first L-shaped supporting plate and a second L-shaped supporting plate. The rotating shaft is arranged in the feeding pipe, the material distributing pieces are arranged on the outer surface of the rotating shaft, after color master batches are added into the feeding hopper, the color master batches fall into the gaps between the material distributing pieces, the rotation frequency of the stepping motor is controlled through the PLC, and therefore the rotation frequency of the material distributing pieces is accurately controlled, and the color master batches are fed into the feeding hopper. The color master batches among the material distributing pieces gradually fall into a feeding hole of the injection molding machine, so that the accuracy and the stability of the addition amount are guaranteed, and the influence on the quality of injection molding products due to excessive or insufficient addition of the color master batches is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machine equipment, in particular to a masterbatch adding device for injection molding. Background Art

[0002] In the injection molding industry, the addition of masterbatch plays a key role in the coloring of plastic products. By evenly adding masterbatch to the plastic raw materials, the final molded plastic products can obtain the desired color and appearance effects to meet the diverse market needs.

[0003] Most traditional masterbatch adding devices are simply combined with a hopper and a conveying pipe, which lacks control over the flow rate and amount of masterbatch added. In actual operation, due to the interference of unstable factors such as uneven raw material particle size, fluidity differences, and vibration during the operation of the device, the masterbatch flow rate is prone to fluctuations during the conveying process. This directly leads to the difficulty in accurately controlling the amount of masterbatch added, and often results in over- or under-addition. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a masterbatch adding device for injection molding, which has the advantages of being able to add masterbatch quantitatively in a step-by-step manner, and solves the above-mentioned technical problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a masterbatch adding device for injection molding, comprising an upper hopper, a feed pipe is fixedly connected to the bottom of the upper hopper, a rotating shaft is rotatably connected inside the feed pipe, a material dividing sheet is fixedly connected to the outer surface of the rotating shaft, a coupling is connected to one end of the rotating shaft, a stepping motor is connected to one end of the coupling, an L-shaped support plate 1 and an L-shaped support plate 2 are fixedly connected to the outer surface of the feed pipe, a cover plate is connected to the top of the upper hopper by bolts, a shaft rod is rotatably connected inside the cover plate, a connecting rod is fixedly connected to the outer surface of the shaft rod, a clamp is fixedly connected to one end of the connecting rod, a scraper is connected to the inside of the clamp by bolts, a spiral tube is threadedly connected to the bottom of the shaft rod, a No. 1 pulley is fixedly connected to the top of the shaft rod, a synchronous belt is connected to the No. 1 pulley for transmission, a No. 2 pulley is connected to the synchronous belt for transmission, a transmission rod is fixedly connected to the end center of the No. 2 pulley, and a gear box is installed on the side of the L-shaped support plate 2.

[0008] Preferably, the outer surface of the rotating shaft is fixedly connected with a plurality of material dividing pieces around its axial direction, and the curved surfaces of the plurality of material dividing pieces fit with the inner wall of the feeding pipe.

[0009] Through the above technical scheme, masterbatches can be temporarily stored in the upper hopper, and by connecting the feed tube to the feed port of the injection molding machine, the masterbatch will automatically enter the feed tube under the action of gravity, and the masterbatch will fall into the gaps between several dividing sheets. By starting the stepper motor, the coupling can be driven to rotate, and the coupling can drive the rotating shaft to rotate, and the rotating shaft can drive several dividing sheets to rotate intermittently, so that the masterbatch between the dividing sheets will gradually fall into the feed port of the injection molding machine. By utilizing the existing PLC controller to connect the stepper motor, the number of rotations of the stepper motor can be controlled, so that quantitative addition of masterbatch to the injection molding machine can be achieved.

[0010] Preferably, two connecting rods are fixedly connected to the outer surface of the shaft rod, and the scraper blade is made of a flexible material.

[0011] Through the above technical solution, when the shaft rotates, it can drive the two connecting rods to rotate around the axial direction of the shaft, so that the shaft drives the clamping plate, and the clamping plate drives the scraper to rotate on the inner wall of the upper hopper, thereby preventing the masterbatch from adhering to the inner wall of the upper hopper during the feeding process.

[0012] Preferably, a screw hole is provided at the bottom end of the shaft rod, and the screw hole is used for threaded connection with the spiral pipe.

[0013] Through the above technical solution, the spiral tube can also be driven to rotate during the rotation of the shaft rod. Since the spiral tube is located above the feed tube, if there is agglomeration in the masterbatch, the agglomerated masterbatch can be broken up when the spiral tube rotates to prevent the agglomerated masterbatch from being blocked at the top of the feed tube, which is beneficial to ensure the smooth feeding of the masterbatch.

[0014] Preferably, a connection ear is fixedly connected to the outer surface of the upper hopper, and a transmission rod is rotatably connected inside the connection ear.

[0015] Preferably, the gear box is internally rotatably connected with two mutually meshing bevel teeth, wherein one bevel tooth is fixedly connected to the transmission rod, and the end face of the other bevel tooth is fixedly connected to a rotating rod, and one end of the rotating rod is fixedly connected to a rotating shaft.

[0016] Through the above technical scheme, when the stepper motor drives the rotating shaft to rotate, the rotating shaft can also drive the rotating rod to rotate, and the rotating rod drives one of the bevel teeth to rotate, and through the cooperation of the other bevel tooth, it can drive the transmission rod to rotate, and the transmission rod drives the No. 2 pulley to rotate, and the No. 2 pulley drives the No. 1 pulley to rotate with the cooperation of the synchronous belt, and the No. 1 pulley drives the shaft to rotate. In this way, by setting a stepper motor as a power component, the quantitative feeding of masterbatch can be achieved, and the purpose of preventing the masterbatch from adhering to the inner wall of the upper hopper and preventing the agglomerated masterbatch from clogging the feed pipe can be achieved, thereby achieving the purpose of reducing costs and energy consumption.

[0017] Compared with the prior art, the utility model provides a masterbatch adding device for injection molding, which has the following beneficial effects:

[0018] 1. The utility model arranges a rotating shaft in the feed pipe and a plurality of dividing sheets on the outer surface of the rotating shaft. When masterbatch is added into the upper hopper, the masterbatch falls into the gap between the dividing sheets. The PLC controller is used to control the number of rotations of the stepper motor, thereby accurately controlling the rotation frequency of the dividing sheets, so that the masterbatch between the dividing sheets gradually falls into the feed port of the injection molding machine, thereby ensuring the accuracy and stability of the added amount, effectively avoiding the influence of too much or too little addition of masterbatch on the quality of the injection molded product, and providing reliable guarantee for the accurate proportion of masterbatch in injection molding production.

[0019] 2. The utility model drives the flexible scraper to rotate on the inner wall of the upper hopper by rotating the shaft, which effectively prevents the masterbatch from adhering to the inner wall of the upper hopper during feeding, thereby ensuring the smoothness of feeding and the cleanliness of the upper hopper. At the same time, the spiral tube threadedly connected to the bottom end of the shaft rotates with the shaft, which can break up the lumps in the masterbatch and prevent the lumps from blocking the top of the feed pipe, thereby ensuring that the masterbatch is continuously and stably fed to the injection molding machine, reducing the equipment downtime and maintenance time caused by blockage, improving production efficiency, reducing the adverse effects of masterbatch adhesion and agglomeration problems on production, and ensuring the continuity and efficiency of the injection molding production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a front structural schematic diagram of the utility model;

[0022] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model;

[0023] Figure 4 For this utility model Figure 3 Schematic diagram of the locally enlarged structure of A in the middle.

[0024] Among them: 1. upper hopper; 2. feed pipe; 3. rotating shaft; 4. material dividing sheet; 5. coupling; 6. stepping motor; 7. L-shaped support plate 1; 8. L-shaped support plate 2; 9. cover plate; 10. shaft rod; 11. connecting rod; 12. clamping plate; 13. scraper; 14. spiral tube; 15. No. 1 pulley; 16. synchronous belt; 17. No. 2 pulley; 18. transmission rod; 19. gear box; 20. ear; 21. rotating rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1: Please refer to Figure 1-Figure 4 As shown, a masterbatch adding device for injection molding comprises an upper hopper 1, a feed pipe 2 is fixedly connected to the bottom of the upper hopper 1, a rotating shaft 3 is rotatably connected inside the feed pipe 2, a material dividing sheet 4 is fixedly connected to the outer surface of the rotating shaft 3, a coupling 5 is connected to one end of the rotating shaft 3, a stepping motor 6 is connected to one end of the coupling 5, an L-shaped support plate 1 7 and an L-shaped support plate 2 8 are fixedly connected to the outer surface of the feed pipe 2, a cover plate 9 is connected to the top of the upper hopper 1 by bolts, and a shaft 10 is rotatably connected inside the cover plate 9, The outer surface of the shaft rod 10 is fixedly connected with a connecting rod 11, one end of the connecting rod 11 is fixedly connected with a clamping plate 12, the inside of the clamping plate 12 is connected with a scraper 13 by bolts, the bottom of the shaft rod 10 is threadedly connected with a spiral tube 14, the top of the shaft rod 10 is fixedly connected with a No. 1 pulley 15, the No. 1 pulley 15 is transmission-connected with a synchronous belt 16, the synchronous belt 16 is transmission-connected with a No. 2 pulley 17, the end center of the No. 2 pulley 17 is fixedly connected with a transmission rod 18, and a gear box 19 is installed on the side of the L-shaped support plate 28.

[0027] Specifically, the outer surface of the rotating shaft 3 is fixedly connected with a plurality of material dividing pieces 4 around its axial direction, and the curved surfaces of the plurality of material dividing pieces 4 are in contact with the inner wall of the feed pipe 2. The advantage is that the masterbatch can be temporarily stored through the upper hopper 1, and by connecting the feed pipe 2 to the feed port of the injection molding machine, the masterbatch will automatically enter the feed pipe 2 under the action of gravity, and the masterbatch will fall into the gaps between the plurality of material dividing pieces 4, and by starting the stepper motor 6, the coupling 5 can be driven to rotate, and the coupling 5 drives the rotating shaft 3 to rotate, and the rotating shaft 3 drives the plurality of material dividing pieces 4 to rotate intermittently, so that the masterbatch between the material dividing pieces 4 will gradually fall into the feed port of the injection molding machine, and by using the existing PLC controller to connect the stepper motor 6, the number of rotations of the stepper motor 6 can be controlled, so that the masterbatch can be quantitatively added to the injection molding machine.

[0028] Specifically, two connecting rods 11 are fixedly connected to the outer surface of the shaft 10, and the scraper 13 is made of a flexible material. The advantage is that when the shaft 10 rotates, the two connecting rods 11 can be driven to rotate around the axis of the shaft 10, so that the shaft 10 drives the clamping plate 12, and the clamping plate 12 drives the scraper 13 to rotate on the inner wall of the upper hopper 1, so that the masterbatch can be prevented from adhering to the inner wall of the upper hopper 1 during the feeding process.

[0029] Specifically, a screw hole is provided at the bottom end of the shaft 10, and the screw hole is used for threaded connection with the spiral tube 14. The advantage is that when the shaft 10 rotates, the spiral tube 14 can also be driven to rotate. Since the spiral tube 14 is located above the feed tube 2, if there is agglomeration in the masterbatch, the agglomerated masterbatch can be broken up when the spiral tube 14 rotates, preventing the agglomerated masterbatch from clogging the top of the feed tube 2, which is conducive to ensuring the smooth feeding of the masterbatch.

[0030] Example 2: Please refer to Figure 1 and Figure 2 , as an improvement to the previous embodiment.

[0031] Specifically, the outer surface of the upper hopper 1 is fixedly connected with a connection ear 20, and the connection ear 20 is rotatably connected to the transmission rod 18. The gear box 19 is internally rotatably connected with two mutually meshing bevel teeth, one of which is fixedly connected to the transmission rod 18, and the end face of the other bevel tooth is fixedly connected with a rotating rod 21, and one end of the rotating rod 21 is fixedly connected to the rotating shaft 3. The advantage is that when the stepper motor 6 drives the rotating shaft 3 to rotate, the rotating shaft 3 can also drive the rotating rod 21 to rotate, and the rotating rod 21 drives one of the bevel teeth to rotate, and the transmission rod 18 can be driven to rotate through the cooperation of the other bevel tooth, and the transmission rod 18 drives the second pulley 17 to rotate, and the second pulley 17 drives the first pulley 15 to rotate with the cooperation of the synchronous belt 16, and the first pulley 15 drives the shaft 10 to rotate. In this way, by setting a stepper motor 6 as a power component, the purpose of quantitative feeding of masterbatch and preventing the masterbatch from adhering to the inner wall of the upper hopper 1 and preventing the agglomerated masterbatch from clogging the feed pipe 2 can be achieved, thereby achieving the purpose of reducing cost and energy consumption.

[0032] When in use, first connect the feed pipe 2 to the feed port of the injection molding machine, add masterbatch in the upper hopper 1, and the masterbatch automatically falls into the feed pipe 2 under the action of gravity, and falls into the gaps between several dividing pieces 4 on the outer surface of the rotating shaft 3; then, use the existing PLC controller to connect the stepper motor 6, start the stepper motor 6 to drive the coupling 5 to rotate, and the coupling 5 drives the rotating shaft 3 to rotate, so that several dividing pieces 4 rotate intermittently, so that the masterbatch between the dividing pieces 4 gradually falls into the feed port of the injection molding machine, and the masterbatch is quantitatively added into the injection molding machine; at the same time, when the stepper motor 6 drives the rotating shaft 3 to rotate, the rotating shaft 3 drives the rotating rod 21 to rotate, and the rotating rod 21 drives one of the bevel teeth to rotate, and the other bevel teeth are driven to rotate. The teeth cooperate to drive the transmission rod 18 to rotate, the transmission rod 18 drives the second pulley 17 to rotate, the second pulley 17 drives the first pulley 15 to rotate with the cooperation of the synchronous belt 16, and the first pulley 15 drives the shaft 10 to rotate. When the shaft 10 rotates, it will drive the two connecting rods 11 to rotate around the axial direction of the shaft 10, and then drive the clamping plate 12 and the scraper 13 to rotate on the inner wall of the upper hopper 1 to prevent the masterbatch from adhering to the inner wall of the upper hopper 1 during the feeding process; at the same time, the rotation of the shaft 10 will also drive the spiral tube 14 with a threaded connection at the bottom to rotate. If there is agglomeration in the masterbatch, the rotation of the spiral tube 14 can break up the agglomerated masterbatch to prevent the agglomerated masterbatch from clogging the top of the feeding pipe 2, thereby ensuring smooth feeding of the masterbatch.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A masterbatch adding device for injection molding, comprising an upper hopper, characterized in that: The bottom of the upper hopper is fixedly connected with a feeding pipe, the inside of the feeding pipe is rotatably connected with a rotating shaft, the outer surface of the rotating shaft is fixedly connected with a dividing piece, one end of the rotating shaft is connected with a coupling, one end of the coupling is connected with a stepping motor, the outer surface of the feeding pipe is fixedly connected with an L-shaped support plate 1 and an L-shaped support plate 2, the top of the upper hopper is connected with a cover plate by bolts, the inside of the cover plate is rotatably connected with a shaft rod, the outer surface of the shaft rod is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with a clamping plate, the inside of the clamping plate is connected with a scraper by bolts, the bottom of the shaft rod is threadedly connected with a spiral tube, the top of the shaft rod is fixedly connected with a No. 1 pulley, the No. 1 pulley is transmission-connected with a synchronous belt, the synchronous belt is transmission-connected with a No. 2 pulley, the end face center of the No. 2 pulley is fixedly connected with a transmission rod, and a gear box is installed on the side of the L-shaped support plate 2.

2. The device for adding masterbatch for injection molding according to claim 1, characterized in that: The outer surface of the rotating shaft is fixedly connected with a plurality of material dividing pieces around the axial direction thereof, and the curved surfaces of the plurality of material dividing pieces are in contact with the inner wall of the feeding pipe.

3. The device for adding masterbatch for injection molding according to claim 1, characterized in that: The outer surface of the shaft is fixedly connected to two connecting rods, and the scraper is made of a flexible material.

4. The device for adding masterbatch for injection molding according to claim 1, characterized in that: A screw hole is provided at the bottom end of the shaft rod, and the screw hole is used for threaded connection with the spiral pipe.

5. The device for adding masterbatch for injection molding according to claim 1, characterized in that: The outer surface of the upper hopper is fixedly connected with a connecting ear, and the connecting ear is rotatably connected with a transmission rod.

6. The device for adding masterbatch for injection molding according to claim 1, characterized in that: The gear box is internally rotatably connected with two mutually meshing bevel teeth, one of which is fixedly connected to the transmission rod, and the end face of the other bevel tooth is fixedly connected to a rotating rod, one end of which is fixedly connected to a rotating shaft.

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