A raw material mixing device for plastic carrier belt production

Abstract

This utility model discloses a raw material mixing device for plastic carrier belt production, including a support frame. A U-shaped mixing chamber is installed on the top of the support frame. A servo motor is installed on one side of the U-shaped mixing chamber. A discharge pipe is connected to the bottom of the U-shaped mixing chamber on the side away from the servo motor. A feed pipe is connected to the top of the U-shaped mixing chamber on the side near the discharge pipe. This utility model uses a storage component to form a closed space with a top plate and a sliding partition. During the mixing process, the cleaning component is stored and protected, preventing it from contacting the raw material dust in the mixing chamber. This prevents brush contamination at the source and ensures that the purity of the raw materials in subsequent mixing operations is not affected by the cleaning component. At the same time, the closed environment isolates the brush bristles from air humidity and external collisions, slowing down the aging of the cleaning brushes, extending their service life, and reducing the frequency of maintenance and replacement.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing equipment technology, specifically to a raw material mixing device for plastic carrier belt production. Background Technology

[0002] Plastic carrier tape is a key component in the packaging of electronic components, and its raw materials are usually a mixture of various plastic granules and additives.

[0003] Chinese Patent No. CN219765048U discloses a ribbon mixer, relating to the field of improved ribbon mixer technology. It includes a support plate, a U-shaped container horizontally fixedly connected to the side of the support plate, a discharge pipe fixedly connected to the middle of the bottom of the U-shaped container, a baffle plate movably inserted into the discharge pipe in a horizontal direction, a common shaft rotatably connected to the side of the U-shaped container, a stirring ribbon fixedly connected to the outer wall of the common shaft, and a receiving groove opened at the top of the U-shaped container, into which a top plate movably inserts in a horizontal direction.

[0004] The aforementioned patents also have some drawbacks. For example, the cleaning brushes of the equipment are directly exposed to the environment inside and outside the mixing chamber during the raw material mixing process. This exposure not only causes the raw material dust raised during the mixing process to easily adhere to the gaps between the brush bristles, resulting in cleaning brush contamination, which may introduce impurities in subsequent mixing operations and affect the purity of the plastic carrier belt raw materials; it also causes the brush bristles to age and harden due to long-term exposure to air humidity and dust erosion, and they are prone to deformation or breakage due to collisions and friction when the equipment is idle or being moved, resulting in reduced cleaning effect, shortened service life, and increased maintenance costs. Therefore, we need to propose a raw material mixing equipment for the production of plastic carrier belts. Utility Model Content

[0005] The purpose of this invention is to provide a raw material mixing device for the production of plastic carrier belts, which has the advantages of retractable and protective cleaning brushes and high mixing uniformity, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a raw material mixing device for producing plastic carrier belts, comprising a support frame, a U-shaped mixing chamber installed on the top of the support frame, a servo motor installed on one side of the U-shaped mixing chamber, a discharge pipe connected to the bottom of the U-shaped mixing chamber away from the servo motor, a feed pipe connected to the top of the U-shaped mixing chamber near the discharge pipe, and a stirring component for mixing the raw materials disposed inside the U-shaped mixing chamber; The top of the U-shaped mixing chamber is equipped with a storage component; The storage component is equipped with a cleaning component for cleaning the device. The cleaning component is provided with a control component above it for controlling the extension or retraction of the cleaning component.

[0007] Preferably, the stirring assembly includes a rotating shaft installed inside the U-shaped mixing chamber. One end of the rotating shaft extends rotatably to the outside of the U-shaped mixing chamber and is keyed to the power output end of the servo motor. Multiple helical connecting shafts are fixedly connected radially to the outer wall of the rotating shaft. The helical connecting shafts are spaced apart along the axial direction of the rotating shaft, and adjacent helical connecting shafts are staggered at a 90° angle along the circumference of the rotating shaft.

[0008] Preferably, the stirring assembly further includes a scraper, which is installed at the end of the spiral ribbon connecting shaft away from the rotating shaft. The outer wall of the rotating shaft is fixedly connected to a stirring spiral ribbon, which is located between the scraper and the rotating shaft.

[0009] Preferably, the storage component includes a top compartment, which is installed on top of the U-shaped mixing compartment. A partition is slidably inserted through one side of the top compartment, and one end of the partition extends slidably into the interior of the top compartment. A sliding groove adapted to the partition is formed on the inner wall of the top compartment. The partition and the sliding groove are slidably connected. The bottom of the top compartment is connected to the top of the U-shaped mixing compartment.

[0010] Preferably, the cleaning assembly includes a mounting plate installed inside the top compartment, and the bottom of the mounting plate has a rectangular array of cleaning brushes.

[0011] Preferably, the cleaning assembly further includes a slider, which is fixedly installed on both sides of the mounting plate. The inner wall of the top plate compartment is provided with a groove that matches the slider, and the slider is slidably connected inside the groove.

[0012] Preferably, the control component includes a fixing frame, which is installed on the upper surface of the top plate compartment. An electric push rod is installed on the upper side of the fixing frame, and the working end of the electric push rod slides through into the interior of the top plate compartment and is fixedly connected to the mounting plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, by setting up a storage component, utilizes a top plate compartment and a sliding partition to form a closed space, which stores and protects the cleaning component during the mixing process, preventing it from coming into contact with the raw material dust in the mixing compartment. This prevents brush bristle contamination from the source and ensures that the purity of the raw materials in subsequent mixing operations is not affected by the cleaning component. At the same time, the closed environment isolates the brush bristles from air humidity and external collisions, slowing down the aging rate of the cleaning brush, extending its service life, and reducing the frequency of maintenance and replacement. This effectively solves the problem in Chinese Patent No. CN219765048U that the cleaning brush is directly exposed outside the mixing compartment during raw material mixing, making it susceptible to contamination, aging, and collision damage, resulting in reduced cleaning effect, shortened service life, and increased maintenance costs.

[0014] 2. This utility model, by setting up a control component, uses an electric push rod to drive the cleaning component to move up and down along the slide. Combined with the pull-out operation of the partition, it realizes the rapid switching between the storage and working states of the cleaning component, and can complete the cleaning of the equipment without manual disassembly, reducing the complexity of operation. By setting up a stirring component, the scraper rotates synchronously with the screw ribbon connecting shaft, which can scrape off the residual raw materials on the inner wall of the U-shaped mixing chamber in real time, avoiding material accumulation that affects the mixing effect. At the same time, the screw ribbon connecting shafts arranged at 90° angles, together with the inner and outer double-layer reverse pushing stirring screw ribbons, form a multi-dimensional stirring flow field, improve the uniformity of raw material mixing, and solve the problems of insufficient mixing and material accumulation on the chamber walls of traditional equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the cleaning component of this utility model; Figure 4 This is a cross-sectional structural diagram of the top plate silo of this utility model; Figure 5 This is a schematic diagram showing the connection relationship between the screw ribbon connecting shaft and the scraper of this utility model; Figure 6 This is a schematic diagram showing the connection relationship between the spiral ribbon connecting shaft and the stirring spiral ribbon of this utility model; Figure 7 This is a front view of the stirring assembly of this utility model.

[0016] In the diagram: 1. Support frame; 2. U-shaped mixing chamber; 3. Servo motor; 4. Discharge pipe; 5. Feed pipe; 6. Rotating shaft; 7. Agitating ribbon; 8. Top plate chamber; 9. Partition plate; 10. Sliding groove; 11. Mounting plate; 12. Cleaning brush; 13. Slider; 14. Sliding groove; 15. Fixing frame; 16. Electric push rod; 17. Ribbon connecting shaft; 18. Scraper. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-7This utility model provides a technical solution: a raw material mixing device for plastic carrier belt production, including a support frame 1, a U-shaped mixing chamber 2 installed on the top of the support frame 1, the structure of the U-shaped mixing chamber 2 being adapted to the movement trajectory of the stirring component, facilitating the full flow and mixing of raw materials within the chamber. A servo motor 3 is installed on one side of the U-shaped mixing chamber 2, a discharge pipe 4 is connected to the bottom of the U-shaped mixing chamber 2 away from the servo motor 3, and a feed pipe 5 is connected to the top of the U-shaped mixing chamber 2 near the discharge pipe 4. A matching sealing cap is also provided on the top of the feed pipe 5. The interior of the U-shaped mixing chamber 2 is equipped with a stirring component for mixing the raw materials.

[0019] The mixing assembly includes a rotating shaft 6, which is installed inside the U-shaped mixing chamber 2. One end of the rotating shaft 6 extends rotatably to the outside of the U-shaped mixing chamber 2 and is keyed to the power output end of the servo motor 3. Multiple helical connecting shafts 17 are radially fixed to the outer wall of the rotating shaft 6. These shafts are fixed radially along the rotating shaft 6, with one end connected to the rotating shaft 6 and the other end fitted with scrapers 18 for fixing them to the rotating shaft 6. The scrapers 17 are spaced apart along the axial direction of the rotating shaft 6, with adjacent positions staggered at a 90° angle to ensure that the scrapers 18 can fully contact the inner wall of the U-shaped mixing chamber 2, improving the scraping effect. The helical connecting shafts 17 are spaced apart along the axial direction of the rotating shaft 6, with adjacent axially positioned helical connecting shafts 17 staggered at a 90° angle along the circumference of the rotating shaft 6.

[0020] Meanwhile, the mixing assembly also includes a scraper 18, which mainly rotates with the rotating shaft 6. By scraping the wall of the U-shaped mixing chamber 2, the scraper 18 promotes the raw materials to participate in the overall mixing and enhances the uniformity of mixing. At the same time, it can reduce residue on the chamber wall and guide the residue cleaned by the cleaning brush 12 to be discharged during cleaning, thus helping to improve the cleaning effect. The scraper 18 is installed at the end of the screw ribbon connecting shaft 17 away from the rotating shaft 6. The outer wall of the rotating shaft 6 is fixedly connected to the mixing screw ribbon 7, and the mixing screw ribbon 7 is located between the scraper 18 and the rotating shaft 6.

[0021] Furthermore, the stirring ribbons 7 are spaced apart along the axial direction of the rotating shaft 6, and are divided into inner stirring ribbons 7 and outer stirring ribbons 7. The inner stirring ribbons 7 are located close to the rotating shaft 6, and have a smaller spiral diameter. They mainly stir the raw materials near the rotating shaft 6, promoting the axial flow of the raw materials. The outer stirring ribbons 7 are located outside the inner stirring ribbons 7, have a larger spiral diameter, and have a suitable gap with the scraper 18. They can turn over the raw materials in the area away from the rotating shaft 6, forming a circulating mixture of the inner and outer layers of raw materials with the inner stirring ribbons 7, further improving the mixing uniformity. Furthermore, when the stirring screw 7 rotates synchronously with the rotating shaft 6, the inner stirring screw 7 pushes the raw material to one end, while the outer stirring screw 7 drives the raw material to move in the opposite direction, so that the raw material forms an axial convection circulation in the U-shaped mixing chamber 2. At the same time, combined with the radial stirring of the screw connecting shaft 17, the multi-dimensional mixing of the raw material is realized, which meets the mixing accuracy requirements of the raw material for plastic carrier belt production.

[0022] Furthermore, the top of the U-shaped mixing chamber 2 is equipped with a storage component. This storage component includes a top plate chamber 8, which serves as the main structure of the storage component. The top plate chamber 8 houses the cleaning component, and its bottom connects to the top of the U-shaped mixing chamber 2, providing a channel for the cleaning component to enter and clean the U-shaped mixing chamber 2, while also protecting the cleaning component. The top plate chamber 8 is installed on top of the U-shaped mixing chamber 2. A partition 9 slides through one side of the top plate chamber 8. The partition 9 slides within a sliding groove 10. When the cleaning component is stored in the top plate chamber 8, the partition 9 inserts into the top plate chamber 8, separating it from the U-shaped mixing chamber 2 and preventing raw materials from entering the top plate chamber 8 during mixing. When cleaning is required, the partition 9 is removed, allowing the cleaning component to smoothly enter the mixing chamber. One end of the partition 9 extends slidably into the interior of the top chamber 8. The inner wall of the top chamber 8 has a sliding groove 10 adapted to the partition 9. The partition 9 is slidably connected to the sliding groove 10, and the bottom of the top chamber 8 communicates with the top of the U-shaped mixing chamber 2. The sliding groove 10 provides guidance and limitation for the sliding of the partition 9, ensuring that the partition 9 can be smoothly and accurately inserted or withdrawn, and ensuring a sealing and sliding fit between the partition 9 and the top chamber 8. When the partition 9 is withdrawn, a matching sealing strip is provided at its edge in contact with the top chamber 8.

[0023] Based on this, the internal structure of the storage assembly includes a cleaning component for cleaning the equipment. The cleaning component includes a mounting plate 11, which is installed inside the top plate compartment 8. A rectangular array of cleaning brushes 12 is located at the bottom of the mounting plate 11. By setting up the cleaning brushes 12, the contact friction between the cleaning brushes 12 and the U-shaped mixing compartment 2 and the stirring screw 7 removes residual raw material impurities, thereby cleaning the inside of the equipment and ensuring the purity of the raw materials for the next mixing.

[0024] Furthermore, the cleaning assembly also includes sliders 13, which are fixedly installed on both sides of the mounting plate 11. The inner wall of the top plate compartment 8 is provided with a groove 14 that matches the slider 13, and the slider 13 is slidably connected inside the groove 14. The mounting plate 11 is used to fix the cleaning brush 12, and the sliders 13 installed on both sides of it can slide in the groove 14. Under the drive of the control component, they can move up and down, thereby driving the cleaning brush 12 into or out of the U-shaped mixing compartment 2. By setting the sliders 13 and the grooves 14, the movement trajectory of the mounting plate 11 can be limited, and the mounting plate 11 can be stably supported.

[0025] In addition, the cleaning brushes 12 are arranged in a rectangular array at the bottom of the mounting plate 11, and the array range is adapted to the inner cavity width of the U-shaped mixing chamber 2 and the distribution area of ​​the stirring components. The cleaning brushes 12 are made of wear-resistant nylon filaments, which have high hardness and toughness. They can effectively remove plastic material residues adhering to the stirring ribbon 7, the ribbon connecting shaft 17, and the inner wall of the U-shaped mixing chamber 2 through friction, and are not easily worn or broken due to long-term contact with hard parts. At the same time, nylon filaments have strong chemical stability and are not prone to reacting with plastic raw materials and additives, which can avoid the introduction of impurities during the cleaning process, ensure the purity of the subsequent mixed raw materials, and meet the strict requirements for equipment cleanliness in plastic carrier belt production.

[0026] Furthermore, a control component is installed above the cleaning component to control its extension or retraction. This control component includes a mounting bracket 15, which is installed on the upper surface of the top chamber 8. An electric push rod 16 is mounted on the upper side of the bracket 15, and its working end slides through the interior of the top chamber 8 and is fixedly connected to the mounting plate 11. By using the electric push rod 16, the mounting plate 11 moves up and down through its telescopic movement, thereby controlling whether the cleaning component extends out of the top chamber 8 into the U-shaped mixing chamber 2 for cleaning, or retracts back into the top chamber 8, thus controlling the working status of the cleaning component.

[0027] In summary, when mixing raw materials, ensure that the partition 9 is fully inserted into the sliding groove 10 to separate the top plate chamber 8 from the U-shaped mixing chamber 2, preventing raw materials from entering the receiving component; simultaneously close the valve of the discharge pipe 4 to ensure that the U-shaped mixing chamber 2 is in a closed state. Open the sealing cap at the top of the feed pipe 5 and pour the plastic raw materials to be mixed into the U-shaped mixing chamber 2 through the feed pipe 5. The raw materials enter the bottom of the chamber along the pipe; after feeding, tighten the sealing cap to prevent raw materials from splashing during mixing.

[0028] The servo motor 3 is started, and its power output end drives the rotating shaft 6 to rotate inside the U-shaped mixing chamber 2 via a key connection. The spiral connecting shaft 17 on the outer wall of the rotating shaft 6 rotates synchronously, driving the scraper 18 and the stirring spiral 7 to operate. The stirring spiral 7 pushes the raw materials to flow axially and radially through the spiral structure to achieve three-dimensional mixing. The scraper 18 rotates against the inner wall of the U-shaped mixing chamber 2, scraping off the residual raw materials on the chamber wall and promoting their participation in mixing, thereby improving uniformity. After mixing is completed, the servo motor 3 is turned off, and the valve of the discharge pipe 4 is opened. The mixed raw materials flow out of the equipment through the discharge pipe 4 under the action of gravity and enter the subsequent production stage.

[0029] After the raw materials are mixed, the partition 9 is pulled out, and the sealing strip on its edge is released from the sealed state, opening the communication channel between the top plate chamber 8 and the U-shaped mixing chamber 2; the electric push rod 16 on the fixing frame 15 is activated, the electric push rod 16 extends, and pushes the mounting plate 11 to move downward along the slide 14, so that the bottom cleaning brush 12 extends into the U-shaped mixing chamber 2 and descends to a position where it is in full contact with the stirring ribbon 7, the ribbon connecting shaft 17 and the inner wall of the U-shaped mixing chamber 2, that is, the lower end of the cleaning brush 12 can cover the main area of ​​the stirring assembly.

[0030] Restart the servo motor 3 to make the rotating shaft 6 rotate at low speed, driving the stirring component to rotate; the cleaning brush 12 removes residual materials from the surface of each component through friction, and the scraper 18 rotates synchronously to guide the residue cleaned by the brush to the discharge pipe 4 for discharge. After cleaning is completed, turn off the servo motor 3, the electric push rod 16 retracts, and pulls the mounting plate 11 back into the top plate chamber 8; reinsert the partition 9, which is fixed by the sliding groove 10, restoring the top plate chamber 8 to its closed state, completing the entire cleaning process.

[0031] It should be noted that the servo motors and electric linear actuators mentioned above are all devices with relatively mature existing technologies. The specific models can be selected according to actual needs. At the same time, the servo motors and electric linear actuators can be powered by built-in power supplies or by AC power. The specific power supply method should be selected according to the situation, which will not be elaborated here.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw material mixing device for producing plastic carrier belts, comprising a support frame (1), a U-shaped mixing chamber (2) mounted on the top of the support frame (1), a servo motor (3) mounted on one side of the U-shaped mixing chamber (2), a discharge pipe (4) connected to the bottom of the side of the U-shaped mixing chamber (2) away from the servo motor (3), and a feed pipe (5) connected to the top of the side of the U-shaped mixing chamber (2) near the discharge pipe (4), characterized in that: The U-shaped mixing chamber (2) is equipped with a stirring component for mixing raw materials. The top of the U-shaped mixing chamber (2) is equipped with a storage component; The storage component is equipped with a cleaning component for cleaning the device. The cleaning component is provided with a control component above it for controlling the extension or retraction of the cleaning component.

2. The raw material mixing equipment for producing plastic carrier belts according to claim 1, characterized in that: The stirring assembly includes a rotating shaft (6), which is installed inside the U-shaped mixing chamber (2). One end of the rotating shaft (6) extends to the outside of the U-shaped mixing chamber (2) and is keyed to the power output end of the servo motor (3). Multiple helical connecting shafts (17) are fixedly connected radially to the outer wall of the rotating shaft (6). The helical connecting shafts (17) are spaced apart along the axial direction of the rotating shaft (6), and adjacent helical connecting shafts (17) are staggered at a 90° angle along the circumference of the rotating shaft (6).

3. The raw material mixing equipment for producing plastic carrier belts according to claim 2, characterized in that: The stirring assembly also includes a scraper (18), which is installed at the end of the spiral ribbon connecting shaft (17) away from the rotating shaft (6). The outer wall of the rotating shaft (6) is fixedly connected with a stirring ribbon (7) and the stirring ribbon (7) is located between the scraper (18) and the rotating shaft (6).

4. The raw material mixing equipment for producing plastic carrier belts according to claim 1, characterized in that: The storage assembly includes a top plate compartment (8), which is installed on top of the U-shaped mixing compartment (2). A partition (9) is slidably inserted through one side of the top plate compartment (8), and one end of the partition (9) extends slidably into the interior of the top plate compartment (8). A sliding groove (10) adapted to the partition (9) is opened on the inner wall of the top plate compartment (8). The partition (9) is slidably connected to the sliding groove (10). The bottom of the top plate compartment (8) is connected to the top of the U-shaped mixing compartment (2).

5. The raw material mixing equipment for producing plastic carrier belts according to claim 4, characterized in that: The cleaning assembly includes a mounting plate (11) installed inside the top plate compartment (8), and a rectangular array of cleaning brushes (12) at the bottom of the mounting plate (11).

6. The raw material mixing equipment for producing plastic carrier belts according to claim 5, characterized in that: The cleaning assembly also includes a slider (13), which is fixedly installed on both sides of the mounting plate (11). The inner wall of the top plate compartment (8) is provided with a groove (14) that is adapted to the slider (13), and the slider (13) is slidably connected inside the groove (14).

7. The raw material mixing equipment for producing plastic carrier belts according to claim 6, characterized in that: The control component includes a mounting bracket (15) which is installed on the upper surface of the top plate compartment (8). An electric push rod (16) is installed on the upper side of the mounting bracket (15). The working end of the electric push rod (16) slides through the interior of the top plate compartment (8) and is fixedly connected to the mounting plate (11).

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