Color master batch adding device for injection molding

Abstract

This utility model discloses a color masterbatch adding device for injection molding, including a support, a storage hopper, a feeding roller, a geared motor, and a feeding hopper. A receiving bin is arranged in a circular array on the feeding roller, with limiting guide strips on the inner side wall of the receiving bin, and a lifting mechanism and a partition at the bottom. The geared motor drives the feeding roller to rotate, causing the receiving bin to circulate sequentially through the storage hopper and the feeding hopper, thus conveying the color masterbatch. The lifting mechanism is driven by a cylinder, causing the partition to move up and down, adjusting the volume of the receiving bin, thereby precisely controlling the amount of color masterbatch added. The inner wall of the feeding hopper is coated with an anti-stick coating, and the bottom has an inclined guide tube to ensure smooth feeding. This utility model has a reasonable structure, can accurately adjust the addition amount, and improves production efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the field of color masterbatch production and processing technology, specifically a color masterbatch adding device for injection molding. Background Technology

[0002] In the injection molding process, the addition of color masterbatch is a crucial step, and the precise control of its addition amount directly affects the color consistency and quality stability of the injection molded product. Currently, most existing color masterbatch adding devices for injection molding on the market use a simple gravity-feed method, controlling the addition amount by adjusting the size of the feeding nozzle. However, this method has significant drawbacks. Traditional devices lack an effective volume adjustment mechanism, making it impossible to flexibly adjust the addition amount each time according to different production needs. This leads to frequent machine stops for manual adjustments during production, reducing production efficiency and increasing labor costs. Therefore, there is an urgent need to design an injection molding color masterbatch adding device that can precisely adjust the addition amount, adapt to different production needs, and ensure smooth feeding. Utility Model Content

[0003] In view of the above-mentioned problems in the prior art, the purpose of this utility model is to provide a color masterbatch adding device for injection molding, which can use a lifting mechanism to precisely adjust the volume of the receiving hopper, thereby accurately controlling the amount of color masterbatch added, improving production efficiency and product quality.

[0004] A masterbatch adding device for injection molding includes a support frame with a storage hopper for storing masterbatch. A feeding roller is movably mounted on the support frame via a pair of bearings, allowing the feeding roller to rotate freely. A geared motor is fixedly mounted on the support frame, with its output shaft fixedly connected to the feeding roller. The geared motor provides power for the rotation of the feeding roller, enabling control of its rotational speed. The upper part of the feeding roller extends into the storage hopper, allowing a receiving bin to retrieve masterbatch from the hopper. A feeding hopper is also mounted on the support frame at one lower end of the feeding roller to receive and feed the masterbatch from the receiving bin. Four receiving bins are arranged in a circular array on the feeding roller, passing sequentially between the storage hopper and the feeding hopper as the feeding roller rotates. The receiving hopper has four inner walls fixed with limit guides. A lifting mechanism is located at the bottom of the receiving hopper, and a partition is fixed to the lifting mechanism. Guide grooves that match the limit guides are formed on the four sides of the partition, allowing the partition to slide stably up and down inside the receiving hopper. The lifting mechanism includes a lower support fixed to the bottom of the receiving hopper and an upper support fixed to the bottom of the partition. A lower guide rail is located at one end of the lower support, and a support rod is movably mounted at the other end. A pair of rollers that roll left and right are engaged on the lower guide rail. A mounting seat is provided on each roller, and a support rod is movably mounted on the mounting seat. A cylinder is located between the mounting seat and one end of the lower support. The support rods are movably connected, and rollers are mounted at the top of both support rods. An upper guide rail is located on the upper support, and rollers are engaged inside the upper guide rail and roll left and right within it. The extension and retraction of the cylinder drives the mounting base to move along the lower guide rail under the action of roller one. Then, through the linkage of support rod one and support rod two, roller two rolls in the upper guide rail, thereby realizing the up and down movement of the partition and adjusting the volume of the receiving bin.

[0005] Furthermore, the two ends of the cylinder are movably connected to the mounting base and the lower support respectively via pins. This connection method ensures the flexibility of the cylinder's movement. The cylinder is connected to an external air source, which provides power. A stroke sensor is installed on the piston rod of the cylinder. The stroke sensor can accurately detect the extension or retraction length of the cylinder piston rod, thereby accurately controlling the movement distance of the partition and realizing precise adjustment of the docking bin volume.

[0006] Furthermore, the feeding hopper is positioned below the feeding roller, and its inlet corresponds to the upper opening of the receiving bin, ensuring that the masterbatch in the receiving bin accurately falls into the feeding hopper. The inner wall of the feeding hopper is coated with an anti-stick coating to prevent the masterbatch from adhering to the inner wall, ensuring smooth feeding. An inclined guide tube is located at the bottom of the feeding hopper; this inclined guide tube facilitates the rapid sliding of the masterbatch, improving feeding efficiency.

[0007] Furthermore, the geared motor is fixed to the bracket via a motor mount, ensuring stable installation. The output shaft of the geared motor is fixedly connected to the feeding roller via a coupling, achieving reliable power transmission. The geared motor is electrically connected to an external controller, which is equipped with a speed adjustment button. The speed of the geared motor can be easily adjusted via the speed adjustment button, thereby controlling the rotation speed of the feeding roller and adjusting the feeding frequency of the masterbatch.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] This invention features a ring-shaped array of receiving bins on the feeding rollers. The rotation of the feeding rollers drives the receiving bins to circulate sequentially from the storage hopper and the feeding hopper, achieving stable conveying of masterbatch from the storage hopper to the feeding hopper. This avoids the instability in feeding caused by changes in the fluidity of masterbatch in traditional gravity feeding methods.

[0010] The lifting mechanism allows the partition to slide up and down within the receiving hopper. By adjusting the position of the partition, the volume of the receiving hopper can be precisely changed, thereby achieving accurate control over the amount of masterbatch added. The combined use of a cylinder and a stroke sensor further improves the accuracy and reliability of volume adjustment. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a partial cross-sectional view of the present invention.

[0014] Figure 3 This is a schematic diagram of the feeding roller structure of this utility model;

[0015] Figure 4 This is a cross-sectional view of the feeding roller of this utility model:

[0016] Figure 5 This is a schematic diagram of the lifting mechanism structure of this utility model;

[0017] In the picture:

[0018] 1-Bracket, 2-Storage hopper, 3-Discharge roller, 4-Gear motor, 5-Discharge and addition hopper, 6-Receiving bin, 7-Limiting guide bar, 8-Lifting mechanism, 9-Baffle plate, 10-Guide groove, 81-Lower support, 82-Upper support, 811-Lower guide rail, 812-Support rod one, 813-Roller one, 814-Mounting base, 815-Support rod two, 816-Cylinder, 817-Roller two. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1

[0021] like Figure 1-5 As shown;

[0022] A color masterbatch adding device for injection molding.

[0023] This implementation plan addresses the technical problems existing in the prior art, such as those disclosed in the background section above: "In the injection molding process, the addition of color masterbatch is a crucial step, and the precise control of its addition amount directly affects the color consistency and quality stability of the injection molded product. Currently, most existing color masterbatch addition devices for injection molding on the market adopt a simple gravity feeding method, controlling the addition amount by adjusting the size of the feeding port. However, this method has obvious drawbacks; traditional devices lack an effective volume adjustment mechanism, making it impossible to flexibly adjust the addition amount each time according to different production needs. This leads to frequent machine stops for manual adjustment during production, which not only reduces production efficiency but also increases labor costs." In practical terms, this problem is clearly a real and difficult-to-solve issue. Therefore, to solve this technical problem, a color masterbatch addition device for injection molding is provided.

[0024] like Figure 1-5 As shown in the figure;

[0025] This utility model provides a technical solution: a color masterbatch adding device for injection molding, including a support 1, which provides a supporting structure for the entire device. A storage hopper 2 is provided on the support 1 for storing the color masterbatch to be added. A feeding roller 3 is movably mounted on the support 1 via a pair of bearings, ensuring that the feeding roller 3 can rotate freely around its axis. A reduction motor 4 is fixedly mounted on the support 1, and the reduction motor 4 is fixed to the support 1 via a motor mount. The output shaft of the reduction motor 4 is fixedly connected to the feeding roller 3 via a coupling. When the reduction motor 4 is working, it can drive the feeding roller 3 to rotate. The upper part of the feeding roller 3 extends into the storage hopper 2 so that the receiving bin 6 can receive the color masterbatch from the storage hopper 2. A feeding hopper 5 is provided on the support 1 at one lower end of the feeding roller 3. The feeding hopper 5 is located below the feeding roller 3, and its inlet corresponds to the upper opening of the receiving bin 6, ensuring that the color masterbatch in the receiving bin 6 can accurately fall into the feeding hopper 5.

[0026] Four receiving bins 6 are arranged in a circular array on the feeding roller 3. As the feeding roller 3 rotates, the receiving bins 6 pass sequentially through the storage hopper 2 and the feeding hopper 5. Limiting guides 7 are fixed to the four inner side walls of the receiving bins 6. A lifting mechanism 8 is provided at the bottom of the receiving bins 6. A partition 9 is fixed on the lifting mechanism 8. The partition 9 has guide grooves 10 on its four sides that are adapted to the limiting guides 7. The partition 9 slides up and down inside the receiving bins 6 through the guide grooves 10 on its four sides. The cooperation between the limiting guides 7 and the guide grooves 10 restricts the movement direction of the partition 9, so that it can only move up and down in the vertical direction, ensuring the stability of the movement.

[0027] The lifting mechanism 8 includes a lower support 81 fixed to the bottom of the receiving hopper 6 and an upper support 82 fixed to the bottom of the partition 9. A lower guide rail 811 is provided at one end of the lower support 81, and a support rod 812 is movably mounted at the other end. A pair of rollers 813, which roll left and right, are engaged on the lower guide rail 811, allowing them to roll freely on the lower load 811 to reduce friction. A mounting base 814 is provided on the rollers 813, and a support rod 815 is movably mounted on the mounting base 814. A cylinder 816 is located between the mounting base 814 and one end of the lower support 81. The two ends of the cylinder 816 are movably connected to the mounting base 814 and the lower support 81 respectively via pins. The cylinder 816 is connected to an external air source, which provides compressed air to push the piston rod of the cylinder 816 to extend and retract. Support rod 1 812 and support rod 2 815 are movably connected, and roller 2 817 is provided at the top of support rod 1 812 and support rod 2 815. An upper guide rail 821 is provided on the upper support 82. Roller 2 817 is engaged inside the upper guide rail 821 and rolls left and right inside the upper guide rail 821.

[0028] When the volume of the receiving bin 6 needs to be adjusted, the external controller sends a signal to the cylinder 816, and the piston rod of the cylinder 816 extends or retracts. When the piston rod extends, it pushes the mounting base 814 to move away from the lower support 81 along the lower guide rail 811. The mounting base 814 drives the second support rod 815 to move. Since the first support rod 812 and the second support rod 815 are movably connected, the included angle between them changes, causing the second roller 817 to roll upward in the upper guide rail 821, thereby pushing the upper support 82 and the partition 9 to move upward, and the volume of the receiving bin 6 decreases. When the piston rod retracts, the mounting base 814 moves closer to the lower support 81, the included angle between the first support rod 812 and the second support rod 815 changes, the second roller 817 rolls downward in the upper guide rail 821, and the partition 9 moves downward under the action of gravity, and the volume of the receiving bin 6 increases. A stroke sensor installed on the piston rod of cylinder 816 detects the stroke of the piston rod in real time and feeds the signal back to the external controller. The controller precisely controls the extension and retraction of cylinder 816 according to the set addition amount, thereby achieving precise adjustment of the volume of docking hopper 6.

[0029] Working Principle: When the device starts working, the geared motor 4 starts under the control of the external controller, driving the feeding roller 3 to rotate through the coupling. The receiving bin 6 moves in a circular motion along with the feeding roller 3. When the receiving bin 6 rotates to below the storage hopper 2, the masterbatch in the storage hopper 2 falls into the receiving bin 6 under the action of gravity. At this time, the partition 9 is at the bottom of the receiving bin 6, and the volume of the receiving bin 6 is at its maximum, completing the receiving process. As the feeding roller 3 continues to rotate, the receiving bin 6 carrying the masterbatch rotates to above the feeding hopper 5. At this time, the cylinder 816, according to the preset addition amount, drives the lifting mechanism 8 through the extension and retraction of the piston rod, pushing the partition 9 upward, gradually reducing the volume of the receiving bin 6, and squeezing the masterbatch from the receiving bin 6 into the feeding hopper 5. The anti-stick coating 51 on the inner wall of the feeding hopper 5 prevents the masterbatch from adhering, and the inclined guide tube at the bottom allows the masterbatch to slide quickly to the feed port of the injection molding machine, completing the feeding process. The receiving hopper 6 continues to rotate, returning to below the storage hopper 2. The cylinder 816 controls the partition 9 to move downwards, restoring the receiving hopper 6 to its maximum volume and starting the next receiving cycle. By adjusting the speed of the reduction motor 4, the rotation frequency of the discharge roller 3 can be controlled, thereby adjusting the conveying speed of the masterbatch. By adjusting the stroke of the cylinder 816, the moving distance of the partition 9 can be controlled, precisely adjusting the volume of the receiving hopper 6 and achieving precise control over the amount of masterbatch added.

[0030] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A color masterbatch adding device for injection molding, characterized in that, The system includes a support (1), on which a storage hopper (2) is mounted. A feeding roller (3) is movably mounted on the support (1) via a pair of bearings. A geared motor (4) is fixedly mounted on the support (1), and the output shaft of the geared motor (4) is fixedly connected to the feeding roller (3). The upper part of the feeding roller (3) extends into the storage hopper (2). A feeding addition hopper (5) is also mounted on the support (1) at the lower end of one end of the feeding roller (3). The feeding roller (3) has four receiving bins (6) arranged in a ring array. Each of the four inner walls of the receiving bin (6) is fixed with a limit guide (7). The bottom of the receiving bin (6) is provided with a lifting mechanism (8). A partition (9) is fixed on the lifting mechanism (8). The partition (9) has guide grooves (10) on its four sides that are adapted to the limit guide (7). The lifting mechanism (8) includes a lower support fixed to the bottom of the receiving bin (6). (81) and an upper support (82) fixed to the bottom of the partition (9), one end of the lower support (81) is provided with a lower guide rail (811), the other end of the lower support (81) is movably provided with a support rod (812), a pair of rollers (813) that roll left and right are engaged on the lower guide rail (811), a mounting seat (814) is provided on the rollers (813), and a support rod (815) is movably provided on the mounting seat (814). A cylinder (816) is provided between one end of the mounting base (814) and the lower support (81). The first support rod (812) and the second support rod (815) are movably connected, and the top ends of the first support rod (812) and the second support rod (815) are provided with rollers (817). An upper guide rail (821) is provided on the upper support (82). The rollers (817) are engaged inside the upper guide rail (821) and roll left and right inside the upper guide rail (821).

2. The color masterbatch adding device for injection molding according to claim 1, characterized in that, The two ends of the cylinder (816) are movably connected to the mounting base (814) and the lower support (81) respectively via pins. The cylinder (816) is connected to an external air source. A stroke sensor is provided on the piston rod of the cylinder (816).

3. The color masterbatch adding device for injection molding according to claim 1, characterized in that: The feeding hopper (5) is located below the feeding roller (3). The inlet of the feeding hopper (5) corresponds to the upper opening of the receiving bin (6). The inner wall of the feeding hopper (5) is provided with an anti-stick coating. The bottom of the feeding hopper (5) is provided with an inclined guide tube.

4. The color masterbatch adding device for injection molding according to claim 1, characterized in that: The geared motor (4) is fixed on the bracket (1) by a motor base. The output shaft of the geared motor (4) is fixedly connected to the feed roller (3) by a coupling. The geared motor (4) is electrically connected to an external controller, which is equipped with a speed adjustment button.

5. The color masterbatch adding device for injection molding according to claim 1, characterized in that: The limiting guide bar (7) is adapted to the guide groove (10), and the partition (9) slides up and down inside the receiving bin (6) through the guide grooves (10) on its four sides.

6. The color masterbatch adding device for injection molding according to claim 1, characterized in that: The rotation of the feeding roller (3) drives the receiving bin (6) to circulate sequentially from the storage hopper (2) and the feeding hopper (5).

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