Automatic feeding device for a mixing mill

Abstract

The utility model discloses a kind of automatic feeding devices of mixing mill, including mixing mill and the intercommunication conveying pipe with mixing mill, the top of conveying pipe is fixedly installed with feeding cylinder, the outer wall of feeding cylinder is fixedly installed with driving motor, fixedly installed with fixed disc in feeding cylinder, the top of fixed disc is fixedly installed with main shaft, the top of feeding cylinder is fixedly installed with two fixed plates, the top between two fixed plates is fixed with raw material placement pool, even feeding assembly is arranged between two fixed plates, fixedly installed with filter disc in feeding cylinder;In the utility model, the raw material in raw material placement pool is periodically received by the equidistant notch on material roller, and quantitative continuous feeding is realized;By adjusting the rotating speed of driving motor, the feeding frequency of lower material roller can be adjusted synchronously, and the mixing rhythm of mixing mill is flexibly matched;The problem that traditional manual feeding or simple mechanical feeding progress is not controlled is solved;Raw material is not accumulated to block mixing mill feed inlet or cavity, and mechanical failure caused by excessive equipment load is prevented.

Description

Technical Field

[0001] This utility model relates to the field of mixing machine technology, and in particular to an automatic feeding device for a mixing machine. Background Technology

[0002] In the production and processing of rubber, plastics, and polymer materials, the mixing mill is the core equipment for achieving uniform mixing and plasticization modification of raw materials. As a pre-processing step in the mixing operation, the feeding process directly affects the mixing efficiency, product uniformity, and performance of the final product due to its feeding stability and the quality of raw material pretreatment. It is widely used in large-scale production scenarios such as tire manufacturing, seal production, and plastic modification.

[0003] Existing mixing mills mainly rely on manual feeding or simple mechanical conveying for feeding, lacking a systematic feeding control and raw material pretreatment design: manual feeding depends entirely on the operator's experience to control the feeding speed, while simple mechanical conveying is mostly continuous and uniform feeding, neither of which can dynamically match the feeding progress according to the mixing rhythm of the mixing mill; at the same time, existing equipment does not have a raw material screening mechanism, and large impurities or undispersed raw material agglomerates mixed in during storage and transportation will directly enter the mixing mill cavity.

[0004] The above-mentioned feeding method also has the following technical defects: First, the uncontrolled feeding progress can easily lead to the accumulation and blockage of raw materials at the feed inlet or in the cavity of the mixer, which not only interrupts the production process and reduces operating efficiency, but may also cause excessive equipment load due to excessive compression of raw materials, leading to mechanical failure; Second, large pieces of raw materials or impurities that have not been screened are difficult to be fully mixed and dispersed after entering the mixing system, resulting in uneven composition of the final product and increasing the defect rate. To address this, we propose an automatic feeding device for the mixer. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose an automatic feeding device for a mixing machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic feeding device for a mixing mill, comprising a mixing mill and a conveying pipe communicating with the mixing mill, a feeding cylinder fixedly installed at the top of the conveying pipe, a drive motor fixedly installed on the outer wall of the feeding cylinder, a pulley A fixedly sleeved on the output shaft of the drive motor, a fixed disc fixedly installed inside the feeding cylinder, a main shaft fixedly installed at the top of the fixed disc, a drive gear fixedly sleeved at the top of the main shaft, two fixed plates fixedly installed at the top of the feeding cylinder, a raw material placement pool fixedly connected between the tops of the two fixed plates, a uniform feeding component arranged between the two fixed plates, and a filter disc fixedly installed inside the feeding cylinder.

[0007] Preferably, a pulley B is fixedly sleeved on the outer wall of the main shaft, and the pulley A and pulley B are connected by a belt drive.

[0008] Preferably, the uniform feeding assembly includes a mounting plate, a synchronous shaft, a feeding roller, and slots. The mounting plate is fixedly connected to the two fixed plates near their ends. The synchronous shaft is rotatably connected to the inner side of the mounting plate. The feeding roller is fixedly sleeved on the outer wall of the synchronous shaft. The outer wall of the feeding roller has four slots. The included angle between two adjacent slots is 90 degrees. The upper part of the feeding roller extends rotatably into the raw material placement pool.

[0009] Preferably, a driven gear is fixedly sleeved at the end of the synchronous shaft, and the driven gear meshes with the driving gear.

[0010] Preferably, an inclined guide plate is fixed between the two fixed plates directly below the feed roller.

[0011] Preferably, four sets of agitator plates arranged in a cross shape are fixedly connected between the outer wall of the main shaft and the filter disc and the pulley B. The bottom of the agitator plates abuts against the top of the filter disc, and the filter disc is rotatably sleeved with the main shaft.

[0012] Preferably, a rotating feeding disc is fixedly sleeved between the filter disc and the fixed disc on the outer wall of the main shaft. A circular limiting ring is fixedly connected to the outer wall of the rotating feeding disc. The rotating feeding disc is rotatably connected to the feeding cylinder through the limiting ring. The top of the rotating feeding disc has four feeding holes that are equidistantly distributed in a ring and extend to the bottom. The top of the fixed disc has a feeding hole that extends to the bottom directly below each of the four feeding holes. The top of the fixed disc is in contact with the bottom of the rotating feeding disc.

[0013] The beneficial effects of this utility model are: 1. In use, this utility model drives the main shaft to rotate via a belt pulley transmission assembly. The main shaft, through the meshing of the driving gear and the driven gear, drives the feeding roller to rotate synchronously. The equidistant slots on the feeding roller periodically receive the raw materials placed in the raw material pool, achieving quantitative and continuous feeding. By adjusting the speed of the drive motor, the feeding frequency of the feeding roller can be adjusted synchronously, flexibly matching the mixing rhythm of the mixer. This solves the problem of uncontrolled progress in traditional manual feeding or simple mechanical feeding. It prevents raw materials from accumulating and clogging the feed inlet or cavity of the mixer, preventing excessive equipment load and mechanical failure. At the same time, it replaces manual experience-based speed control, improves feeding stability, ensures continuous and efficient mixing process, and solves the defects of low feeding efficiency and easy production interruption in traditional feeding methods.

[0014] 2. In use, this utility model drives the cross-shaped stirring plates to rotate synchronously via the main shaft. The stirring plates scrape and agitate the raw materials on the surface of the filter disc, ensuring full contact between the raw materials and the filter disc. The filter disc intercepts large impurities and raw material agglomerates, while raw materials that meet the particle size requirements fall through the sieve holes. At the same time, the stirring plates prevent raw materials from accumulating and clogging on the surface of the filter disc. This solves the core pain points of traditional devices, such as lack of raw material pretreatment, large raw materials entering the mixer directly, resulting in uneven mixing and a high rate of defective products. The agitation effect of the stirring plates improves screening efficiency, avoids clogging that affects the continuity of feeding, further ensures the uniformity of the mixed raw materials, and improves product quality. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal components of the feeding cylinder of this utility model; Figure 3 This is a cross-sectional view of the feeding cylinder of this utility model; Figure 4 This is a schematic diagram showing the disassembly of the fixed disc and the rotating feeding disc of this utility model; Figure 5 This is a cross-sectional view of the raw material placement tank and a schematic diagram of the bottom structure of the raw material placement tank according to this utility model.

[0017] The attached figures are labeled as follows: 1. Mixing mill; 2. Conveying pipe; 3. Feeding cylinder; 4. Drive motor; 5. Pulley A; 6. Fixed disc; 7. Main shaft; 8. Drive gear; 9. Pulley B; 10. Belt; 11. Filter disc; 12. Agitator plate; 13. Rotary discharge disc; 14. Limiting ring; 15. Feed hole; 16. Discharge hole; 17. Fixed plate; 18. Raw material placement pool; 19. Mounting plate; 20. Synchronous shaft; 21. Discharge roller; 22. Groove; 23. Driven gear; 24. Guide plate. Detailed Implementation

[0018] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figures 1-5 As shown, an automatic feeding device for a mixing mill is disclosed, comprising a mixing mill 1 and a conveying pipe 2 communicating with the mixing mill 1. A feeding cylinder 3 is fixedly installed on the top of the conveying pipe 2. A drive motor 4 is fixedly installed on the outer wall of the feeding cylinder 3. A pulley A5 is fixedly sleeved on the output shaft of the drive motor 4. A fixed plate 6 is fixedly installed inside the feeding cylinder 3. A main shaft 7 is fixedly installed on the top of the fixed plate 6. A drive gear 8 is fixedly sleeved on the top of the main shaft 7. Two fixed plates 17 are fixedly installed on the top of the feeding cylinder 3. A raw material placement pool 18 is fixedly connected between the tops of the two fixed plates 17. A uniform feeding component is provided between the two fixed plates 17. A filter plate 11 is fixedly installed inside the feeding cylinder 3.

[0020] A pulley B9 is fixedly sleeved on the outer wall of the main shaft 7, and the pulley A5 and the pulley B9 are connected by a belt 10 for transmission.

[0021] The uniform feeding assembly includes a mounting plate 19, a synchronous shaft 20, a feeding roller 21, and slots 22. The mounting plate 19 is fixedly connected to the two fixed plates 17 near their ends. The synchronous shaft 20 is rotatably connected to the inner side of the mounting plate 19. The feeding roller 21 is fixedly sleeved on the outer wall of the synchronous shaft 20. The outer wall of the feeding roller 21 has four slots 22, and the included angle between two adjacent slots 22 is 90 degrees. The upper part of the feeding roller 21 extends into the raw material placement pool 18. The drive motor 4 drives the belt pulley transmission assembly, which drives the main shaft 7 and the drive gear 8 to rotate. The gear meshing drives the feeding roller 21 to rotate synchronously. The equidistant slots 22 on the feeding roller 21 periodically receive raw materials, realizing quantitative and continuous feeding. Adjusting the speed of the drive motor 4 can synchronously adjust the feeding frequency to match the mixing rhythm of the mixer. This completely solves the problems of raw material accumulation and blockage and excessive equipment load caused by uncontrolled feeding progress in traditional methods. It replaces manual experience-based speed control, improves feeding stability, ensures continuous and efficient production, and reduces the risk of equipment failure.

[0022] A driven gear 23 is fixedly sleeved at the end of the synchronous shaft 20, and the driven gear 23 meshes with the driving gear 8.

[0023] An inclined guide plate 24 is fixed between the two fixed plates 17 directly below the feed roller 21.

[0024] Four sets of cross-shaped agitator plates 12 are fixedly connected between the outer wall of the main shaft 7 and the filter disc 11 and the pulley B9. The bottom of the agitator plates 12 abuts against the top of the filter disc 11. The filter disc 11 is rotatably connected to the main shaft 7. The main shaft 7 drives the cross-shaped agitator plates 12 to rotate synchronously, stirring the raw material on the surface of the filter disc 11, so that the raw material can fully contact the filter disc 11 to complete the screening, intercepting large impurities and agglomerates, and allowing the qualified particle size raw material to pass through. At the same time, the agitator plates 12 prevent the raw material from accumulating and clogging the screen holes, solving the problem of uneven mixing and high defect rate caused by the lack of pretreatment in traditional equipment, improving the uniformity of raw materials and the quality of products. The stirring effect can also improve screening efficiency and ensure continuous feeding.

[0025] A rotating feeding disc 13 is fixedly sleeved between the filter disc 11 and the fixed disc 6 on the outer wall of the main shaft 7. A circular limiting ring 14 is fixedly connected to the outer wall of the rotating feeding disc 13. The rotating feeding disc 13 is rotatably connected to the feeding cylinder 3 through the limiting ring 14. The top of the rotating feeding disc 13 has four feed holes 15 that are equidistantly distributed in a ring and extend to the bottom. The top of the fixed disc 6 has a feeding hole 16 that extends to the bottom, corresponding to the four feed holes 15 directly below each of them. The top of the fixed disc 6 is in contact with the bottom of the rotating feeding disc 13. The rotating feeding disc 13 rotates with the main shaft 7, and its feed holes 15 and the feeding holes 16 of the fixed disc 6 periodically overlap and stagger, realizing intermittent and uniform feeding of raw materials. The limiting ring 14 ensures smooth rotation and precise hole alignment. This structure solves the problem of instantaneous influx of raw materials in traditional continuous feeding, refines the feeding rhythm, avoids excessive accumulation of raw materials in the mixer, and improves the uniformity of mixing.

[0026] Working principle: Before operation, the raw materials such as rubber and plastic to be processed are poured into the raw material placement tank 18. The drive motor 4 is started, and its output shaft drives the pulley A5 to rotate synchronously. The pulley A5 transmits power to the pulley B9 through the belt 10, which in turn drives the main shaft 7 to rotate smoothly around the fixed plate 6. The main shaft 7 simultaneously drives the drive gear 8, the stirring plate 12, and the rotating feeding plate 13 to rotate synchronously. Since the drive gear 8 and the driven gear 23 mesh with each other, when the main shaft 7 rotates, it will drive the driven gear 23 to rotate synchronously. The driven gear 23 drives the synchronous shaft 20 to rotate on the mounting plate 19, which in turn drives the feeding roller 21 to rotate. When a certain slot 22 rotates to the raw material placement tank, the roller rotates to rotate. When the material is below the pool 18, the raw material in the pool will fall into the slot 22 under the action of gravity to complete the quantitative receiving. As the feeding roller 21 continues to rotate, the slot 22 filled with raw material rotates out of the raw material placement pool 18, and the raw material inside naturally falls onto the guide plate 24 set at an inclination below. Through the guiding action of the guide plate 24, the raw material rolls smoothly into the feeding cylinder 3, realizing the quantitative and continuous feeding of raw material. The raw material that rolls into the feeding cylinder 3 first falls onto the filter plate 11. The main shaft 7 drives the four sets of stirring plates 12 distributed in a cross shape to rotate synchronously. The bottom of the stirring plate 12 is in close contact with the top of the filter plate 11. During the rotation, the raw material on the surface of the filter plate 11 is scraped and stirred. On the one hand, the stirring plate 12 can prevent the raw materials from accumulating and clogging on the surface of the filter plate 11; on the other hand, by stirring, the raw materials can fully contact the filter plate 11. The raw materials that meet the particle size requirements will fall through the sieve holes on the filter plate 11 to the surface of the rotating feed plate 13 below, while large impurities, raw material agglomerates, etc. are intercepted on the filter plate 11, realizing the screening pretreatment of the raw materials; the rotating feed plate 13 rotates synchronously with the main shaft 7, and four annular equidistant feed holes 15 are evenly distributed on its top, and four feed holes 16 are correspondingly opened on the fixed plate 6 below, and the bottom of the rotating feed plate 13 is in close contact with the top of the fixed plate 6. When the feed hole 15 on the rotating feed plate 13 rotates to coincide with the feed hole 16 on the fixed plate 6, the screened raw material will fall into the conveying pipe 2 through the connecting channel between the feed hole 15 and the feed hole 16. As the rotating feed plate 13 continues to rotate, the feed hole 15 and the feed hole 16 periodically coincide and stagger, realizing uniform and intermittent feeding of the raw material and avoiding a sudden surge of large amounts of raw material. Finally, the raw material is stably conveyed to the mixer 1 through the conveying pipe 2 for mixing. During the entire feeding process, the rotation speed of the main shaft 7 can be controlled by adjusting the speed of the drive motor 4, thereby synchronously adjusting the feeding frequency of the feed roller 21, the tumbling speed of the stirring plate 12, and the feeding frequency of the rotating feed plate 13, so as to achieve flexible control of the feeding speed to match the mixing rhythm of the mixer 1. When the mixing operation is completed or the feeding needs to be paused, turn off the drive motor 4, all rotating parts stop working, and the feeding process ends; subsequently, the impurities intercepted on the filter plate 11 can be cleaned periodically to ensure the continuous and stable operation of the device.

[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic feeding device for a mixing mill, comprising a mixing mill (1) and a conveying pipe (2) communicating with the mixing mill (1), characterized in that: A feeding cylinder (3) is fixedly installed on the top of the conveying pipe (2). A drive motor (4) is fixedly installed on the outer wall of the feeding cylinder (3). A pulley A (5) is fixedly sleeved on the output shaft of the drive motor (4). A fixed disk (6) is fixedly installed inside the feeding cylinder (3). A main shaft (7) is fixedly installed on the top of the fixed disk (6). A drive gear (8) is fixedly sleeved on the top of the main shaft (7). Two fixed plates (17) are fixedly installed on the top of the feeding cylinder (3). A raw material placement pool (18) is fixedly connected between the tops of the two fixed plates (17). A uniform feeding component is provided between the two fixed plates (17). A filter disk (11) is fixedly installed inside the feeding cylinder (3).

2. The automatic feeding device for a mixing mill according to claim 1, characterized in that: The outer wall of the main shaft (7) is fixedly sleeved with a pulley B (9), and the pulley A (5) and the pulley B (9) are connected by a belt (10) for transmission.

3. The automatic feeding device for a mixing mill according to claim 1, characterized in that: The uniform feeding assembly includes a mounting plate (19), a synchronous shaft (20), a feeding roller (21), and slots (22). The mounting plate (19) is fixedly connected to the two fixed plates (17) near their ends. The synchronous shaft (20) is rotatably connected to the inner side of the mounting plate (19). The feeding roller (21) is fixedly sleeved on the outer wall of the synchronous shaft (20). The outer wall of the feeding roller (21) has four slots (22). The included angle between two adjacent slots (22) is ninety degrees. The upper part of the feeding roller (21) extends rotatably into the raw material placement pool (18).

4. The automatic feeding device for a mixing mill according to claim 3, characterized in that: The driven gear (23) is fixedly sleeved at the end of the synchronous shaft (20), and the driven gear (23) meshes with the driving gear (8).

5. The automatic feeding device for a mixing mill according to claim 3, characterized in that: An inclined guide plate (24) is fixed between the two fixed plates (17) directly below the feed roller (21).

6. The automatic feeding device for a mixing mill according to claim 2, characterized in that: Four sets of agitators (12) arranged in a cross shape are fixed between the outer wall of the main shaft (7) and the filter disc (11) and the pulley B (9). The bottom of the agitator (12) abuts against the top of the filter disc (11), and the filter disc (11) is rotatably connected to the main shaft (7).

7. An automatic feeding device for a mixing mill according to claim 6, characterized in that: A rotating feed plate (13) is fixedly sleeved between the outer wall of the main shaft (7) and the filter plate (11) and the fixed plate (6). A circular limiting ring (14) is fixedly connected to the outer wall of the rotating feed plate (13). The rotating feed plate (13) is rotatably connected to the feeding cylinder (3) through the limiting ring (14). The top of the rotating feed plate (13) is provided with four feed holes (15) that are equidistantly distributed in a ring and extend to the bottom. The top of the fixed plate (6) is provided with feed holes (16) that extend to the bottom, respectively, directly below the four feed holes (15). The top of the fixed plate (6) is in contact with the bottom of the rotating feed plate (13).

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