Bulk molding compound (BMC) raw material multi-shaft rapid mixing device
By designing a multi-axis rapid mixing device, the mixing mechanism is used to promote the rotation and movement of the raw materials to the center during the stirring process, the problem of difficulty in agglomeration and release of the raw materials of BMC clump molding materials is solved, and more efficient stirring and cutting are achieved.
Patent Information
- Application Number
- CN202421590508.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-08
AI Technical Summary
The processing raw materials of BMC clump molding materials are mostly blocks and pellets, which makes it difficult to mix fully during the stirring process, and it is easy to accumulate and agglomerate problems. The bottom mixed raw materials are not easily released after the stirring, and require manual cleaning.
A multi-axis rapid mixing device for raw materials of BMC ball molding materials is designed, including a mounting frame, agitator paddle, agitator silo and a mixing mechanism. The mixing mechanism pushes the raw materials in the largest pressure area at the bottom of the stirring chamber through the arc baffle and the side walls of the connecting rod to rotate, so that the bottom raw materials can be moved and move to the center of the stirring chamber under the push of the arc baffle, so as to facilitate the stirring paddle to repeatedly stir the bottom raw materials.
It effectively reduces the cumulative agglomeration of the bottom raw materials, improves the mixing effect, improves the quality of subsequent extrusion-forming products, and reduces the number of cleaning times inside the mixing chamber, improves the operating efficiency, and improves the discharge speed, and reduces the number of manual cleaning times.
Smart Images
Figure CN222819292U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bulk molding materials, in particular to a multi-axis rapid mixing device for raw materials of BMC bulk molding materials. Background Art
[0002] BMC bulk molding compound is an unsaturated polyester bulk molding compound. Its production process is to first mix the raw materials such as resin, initiator, colorant, release agent and part of filler evenly, then add them into the mixing extrusion equipment, extrude them into strips, cut them and store them.
[0003] Different from the stirring of liquid raw materials, the raw materials for BMC bulk molding compounds are mostly in block and granular form. When adding raw materials for stirring, it is not easy for different raw materials to be fully mixed. In addition, due to the deadweight of the raw materials, the raw materials deposited at the bottom of the stirring device are under greater pressure and are more prone to accumulation and agglomeration. Similarly, after the stirring is completed, the mixed raw materials at the bottom of the stirring device are not easy to release when the material is discharged, and sometimes even need to be cleaned manually. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and proposes a multi-axis rapid mixing device for BMC bulk molding compound raw materials.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A multi-axis rapid mixing device for BMC bulk molding compound raw materials comprises a mounting frame and a stirring paddle, wherein a stirring bin is fixedly mounted on the top of the mounting frame, a top cover is fixedly mounted on the top of the stirring bin, a stirring paddle is rotatably connected to the center of the bottom of the top cover, a bottom end of the stirring paddle is rotatably connected to the bottom of the stirring bin, an annular frame is arranged at the bottom of the stirring bin, an annular chute is provided on the inner wall of the annular frame, an annular rotating block is rotatably connected in the annular chute, and a mixing mechanism is arranged on the inner wall of the annular rotating block.
[0007] Preferably, a feed inlet is provided on the top side wall of the mixing bin, and the feed inlet is connected to a pipeline of an external feeding equipment.
[0008] Preferably, a first motor is fixedly mounted on the top of the top cover, and an output end of the first motor is connected to the top of the stirring paddle via a reducer.
[0009] Preferably, a discharge port is provided at the bottom of the mixing bin, and the discharge port is connected to a pipeline of an external collection device.
[0010] Preferably, the inner wall of the annular rotating block is fixedly connected with evenly distributed shifting teeth, wherein four mutually symmetrical shifting teeth inner walls are fixedly connected with connecting rods, the ends of the four connecting rods are fixedly connected to a sleeve sleeved on the bottom rotating shaft of the stirring paddle, a second motor is fixedly installed at the bottom end of the stirring chamber, the output shaft of the second motor is inserted into the stirring chamber, and the end of the output shaft of the second motor is fixedly connected to the bottom end of the sleeve.
[0011] Preferably, the mixing mechanism includes a wedge-shaped top and an arc-shaped baffle, the top of each connecting rod is fixedly connected to the wedge-shaped top, the top of one side of each wedge-shaped top is fixedly connected to the arc-shaped baffle, and the end of the arc-shaped baffle is fixedly connected to the top of the shifting tooth.
[0012] Preferably, a long strip-shaped mounting groove is provided at the bottom of the connecting rod, a scraper is rotatably connected to one side of the top of the mounting groove, the top of the scraper is rotatably connected to the telescopic end of the electric cylinder, and the fixed end of the electric cylinder is rotatably connected to the top of the mounting groove.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] The utility model provides a mixing mechanism, which can rotate in the opposite direction while the stirring paddle rotates, and pushes the raw materials in the maximum pressure area at the bottom of the mixing bin to rotate through the arc-shaped baffle and the side wall of the connecting rod, so that the bottom raw materials are movable and move toward the center of the mixing bin under the push of the arc-shaped baffle, thereby facilitating the stirring paddle to repeatedly stir the bottom raw materials, thereby reducing the problem of accumulated caking of the bottom raw materials and improving the stirring effect, so that the quality of the subsequent extruded finished products is improved. At the same time, when the annular rotating block rotates, the picking teeth can effectively drive the raw materials at the dead corner of the outer circle of the bottom of the mixing bin to move, and can prevent the raw materials from being stuck in the dead corner of the outer circle of the bottom. Nodules, for the stirring of block and granular raw materials, the number of internal cleaning times of the mixing bin can be reduced, and the operating efficiency of the mixing bin can be improved. The wedge-shaped top can collide with the raw materials during the raw material feeding process, thereby alleviating the caking problem of the raw materials themselves to a certain extent, and can assist the mixing mechanism and the stirring paddle to fully mix the raw materials.
[0015] The utility model provides a connecting rod and a scraper. When the mixing is finished and the operator opens the discharge port to discharge the materials, the second motor switches to low-speed operation. At this time, the electric cylinder extends to push the scraper to rotate until the bottom end of the scraper abuts against the bottom of the mixing bin. At this time, the connecting rod and the scraper rotating at a low speed can assist in discharging the materials, and the small amount of mixed raw materials remaining at the end can be scraped off by the scraper and pushed into the discharge port. While improving the discharging speed, it can also reduce the problem that a small amount of raw materials at the bottom of the mixing bin cannot be released smoothly, thereby reducing the number of manual cleaning times and improving the utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1This is a schematic diagram of the overall structure of a multi-axis rapid mixing device for BMC bulk molding compound raw materials proposed by the utility model;
[0017] Figure 2 A top view of a workbench of a multi-axis rapid mixing device for BMC bulk molding compound raw materials proposed by the utility model;
[0018] Figure 3 This is a schematic diagram of the slider and fixture structure of a multi-axis rapid mixing device for BMC bulk molding compound raw materials proposed by the utility model;
[0019] Figure 4 The utility model discloses a schematic diagram of the structure of a safety mechanism of a multi-axis rapid mixing device for BMC bulk molding compound raw materials.
[0020] In the figure: 1, mounting frame; 2, mixing chamber; 3, top cover; 4, first motor; 5, feeding port; 6, discharging port; 7, stirring paddle; 8, ring frame; 9, ring rotating block; 10, shifting gear; 11, connecting rod; 111, wedge-shaped top; 12, mixing mechanism; 13, arc baffle; 14, mounting groove; 15, scraper; 16, electric cylinder; 17, second motor. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0022] Reference Figure 1-4A multi-axis rapid mixing device for BMC bulk molding compound raw materials comprises a mounting frame 1 and a stirring paddle 7. A stirring bin 2 is fixedly mounted on the top of the mounting frame 1, a top cover 3 is fixedly mounted on the top of the stirring bin 2, a stirring paddle 7 is rotatably connected to the center of the bottom of the top cover 3, a bottom end of the stirring paddle 7 is rotatably connected to the bottom of the stirring bin 2, an annular frame 8 is arranged at the bottom of the stirring bin 2, an annular chute is provided on the inner wall of the annular frame 8, an annular rotating block 9 is rotatably connected in the annular chute, and a mixing mechanism 12 is arranged on the inner wall of the annular rotating block 9. The stirring chamber 2 is a container for fully mixing a variety of raw materials. The stirring paddle 7 rotates to drive the raw materials added in the stirring chamber 2 to stir and mix. The stirring paddle 7 is the same as the conventional stirring device in that the diameter of the stirring paddle 7 is smaller than the inner diameter of the stirring chamber 2. Therefore, there is a gap between the stirring paddle 7 and the inner wall of the stirring chamber 2. The annular frame 8 and the annular slide separate the raw materials from the annular rotating block 9, reducing the problem of raw materials accumulating and clogging in dead corners. The mixing mechanism 12 can rotate in the opposite direction while the stirring paddle 7 rotates, and the raw materials in the area with the greatest pressure at the bottom of the stirring chamber 2 are pushed to rotate through the arc baffle 13 and the side wall of the connecting rod 11, so that the bottom raw materials are movable and move toward the center of the stirring chamber 2 under the push of the arc baffle 13, thereby facilitating the stirring paddle 7 to repeatedly stir the bottom raw materials, thereby reducing the accumulation of lumps of the bottom raw materials and other problems, improving the stirring effect, and improving the quality of subsequent extrusion molding products.
[0023] As a technical optimization solution of the utility model, a feed inlet 5 is provided on the top side wall of the mixing bin 2, and the feed inlet 5 is connected to an external feeding device pipeline. Various raw materials are added into the mixing bin 2 through the feed inlet 5 for mixing.
[0024] As a technical optimization solution of the utility model, a first motor 4 is fixedly installed on the top of the top cover 3, and the output end of the first motor 4 is connected to the top of the stirring paddle 7 through a reducer. The first motor 4 provides power for the stirring paddle 7 to drive the stirring paddle 7 to rotate.
[0025] As a technical optimization solution of the utility model, a discharge port 6 is provided at the bottom of the mixing bin 2, and the discharge port 6 is connected to a pipeline of an external collection device. The mixed raw materials after mixing are released from the mixing bin 2 through the discharge port 6, and then the mixed raw materials are transported to the storage box by an external conveying device. The discharge port 6 is equipped with a sealed door, and the top of the sealed door is flush with the bottom of the mixing bin 2.
[0026] As a technical optimization scheme of the utility model, the inner wall of the annular rotating block 9 is fixedly connected with evenly distributed shifting teeth 10, wherein the inner walls of four mutually symmetrical shifting teeth 10 are fixedly connected with connecting rods 11, and the ends of the four connecting rods 11 are fixedly connected to the sleeve sleeved on the bottom rotating shaft of the stirring paddle 7, and the bottom end of the stirring chamber 2 is fixedly installed with a second motor 17, the output shaft of the second motor 17 penetrates into the stirring chamber 2, and the end of the output shaft of the second motor 17 is fixedly connected to the bottom end of the sleeve. When the annular rotating block 9 rotates, the shifting teeth 10 can effectively drive the raw materials at the dead corner of the outer circle at the bottom of the stirring chamber 2 to move, which can prevent the raw materials from getting stuck in the dead corner of the outer circle at the bottom. For the mixing of block and granular raw materials, the number of internal cleaning times of the stirring chamber 2 can be reduced, and the operating efficiency of the stirring chamber 2 can be improved. When the raw materials are mixed, the second motor 17 drives the connecting rod 11 and the annular rotating block 9 to rotate in the opposite direction to the stirring paddle 7. Such a rotation method can make the raw materials at the bottom of the stirring chamber 2 fully move, which can prevent agglomeration and improve the mixing effect.
[0027] As a technical optimization solution of the utility model, the mixing mechanism 12 includes a wedge-shaped top 111 and an arc-shaped baffle 13. The top of each connecting rod 11 is fixedly connected to a wedge-shaped top 111, and the top of one side of each wedge-shaped top 111 is fixedly connected to an arc-shaped baffle 13. The end of the arc-shaped baffle 13 is fixedly connected to the top of the shifting tooth 10. The connecting rod 11 and the arc-shaped baffle 13 turn in the opposite direction to the stirring paddle 7. When the second motor 17 is working, the arc-shaped baffle 13 pushes the raw materials at the bottom of the stirring bin 2 to rotate, and due to the arc structure of the arc-shaped baffle 13, the raw materials can be gradually moved toward the center of the stirring bin 2, thereby facilitating the stirring paddle 7 to repeatedly stir the raw materials. The wedge-shaped top 111 can play a role of colliding with the raw materials during the raw material feeding process, thereby alleviating the agglomeration problem of the raw materials themselves to a certain extent, which can assist the mixing mechanism 12 and the stirring paddle 7 to fully mix the raw materials.
[0028] As a technical optimization solution of the utility model, a long strip-shaped mounting groove 14 is provided at the bottom of the connecting rod 11, and a scraper 15 is rotatably connected to one side of the top of the mounting groove 14, and the top of the scraper 15 is rotatably connected to the telescopic end of the electric cylinder 16, and the fixed end of the electric cylinder 16 is rotatably connected to the top of the mounting groove 14. During the mixing of raw materials, the electric cylinder 16 shrinks, and the scraper 15 is stored in the mounting groove 14. When the mixing is completed, when the operator opens the discharge port 6 for discharge, the second motor 17 switches to low-speed operation, and the electric cylinder 16 extends, pushing the scraper 15 to rotate until the bottom end of the scraper 15 abuts against the bottom of the mixing bin 2. At this time, the connecting rod 11 and the scraper 15 rotating at a low speed can assist in the discharge, and the remaining small amount of mixed raw materials can be scraped off by the scraper 15 and pushed into the discharge port 6, which improves the discharge speed and reduces the problem that a small amount of raw materials at the bottom of the mixing bin 2 cannot be released smoothly, which can reduce the number of manual cleaning times and improve the use efficiency.
[0029] When the utility model is in use, first close the feed opening 6, start the first motor 4 and the second motor 17, the first motor 4 rotates to drive the stirring paddle 7 to rotate, and the second motor 17 rotates to drive the annular rotating block 9, the connecting rod 11 and the arc baffle 13 to rotate in the opposite direction of the stirring paddle 7. At this time, the external feeding equipment adds different raw materials into the mixing bin 2 through the feed opening 5 for mixing. The wedge-shaped top 111 can collide with the raw materials during the raw material feeding process. During the mixing process, the shifting teeth 10 can effectively drive the raw materials at the dead corner of the outer circle at the bottom of the mixing bin 2 to move, and the arc baffle 13 pushes the bottom of the mixing bin 2 The raw materials rotate, and due to the arc structure of the arc baffle 13, the raw materials can be gradually moved toward the center of the mixing bin 2, which makes it easier for the stirring paddle 7 to repeatedly stir the raw materials. After the stirring is completed, the first motor 4 is stopped, and the second motor 17 is switched to low-speed operation. The operator opens the discharge port 6. At this time, the electric cylinder 16 extends and pushes the scraper 15 to rotate until the bottom end of the scraper 15 abuts against the bottom of the mixing bin 2. At this time, the connecting rod 11 and the scraper 15 rotating at a low speed can assist in the discharge of the materials, and the remaining small amount of mixed raw materials can be scraped off by the scraper 15 and pushed into the discharge port 6. After the discharge is completed, the second motor 17 is stopped and the discharge port 6 is closed.
[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A multi-axis rapid mixing device for BMC bulk molding compound raw materials, comprising a mounting frame (1) and a stirring paddle (7), characterized in that: A stirring chamber (2) is fixedly mounted on the top of the mounting frame (1), a top cover (3) is fixedly mounted on the top of the stirring chamber (2), a stirring paddle (7) is rotatably connected to the center of the bottom of the top cover (3), the bottom end of the stirring paddle (7) is rotatably connected to the bottom of the stirring chamber (2), an annular frame (8) is arranged at the bottom of the stirring chamber (2), an annular chute is provided on the inner wall of the annular frame (8), an annular rotating block (9) is rotatably connected in the annular chute, and a mixing mechanism (12) is arranged on the inner wall of the annular rotating block (9).
2. A multi-axis rapid mixing device for BMC bulk molding compound raw materials according to claim 1, characterized in that: The top side wall of the mixing bin (2) is provided with a material inlet (5), and the material inlet (5) is connected to a pipeline of an external feeding device.
3. The multi-axis rapid mixing device for BMC bulk molding compound raw materials according to claim 1, characterized in that: A first motor (4) is fixedly mounted on the top of the top cover (3), and an output end of the first motor (4) is connected to the top of the stirring paddle (7) via a speed reducer.
4. The multi-axis rapid mixing device for BMC bulk molding compound raw materials according to claim 1, characterized in that: The bottom of the mixing bin (2) is provided with a discharge port (6), and the discharge port (6) is connected to a pipeline of an external collection device.
5. The multi-axis rapid mixing device for BMC bulk molding compound raw materials according to claim 1, characterized in that: The inner wall of the annular rotating block (9) is fixedly connected with evenly distributed shifting teeth (10), wherein the inner walls of four mutually symmetrical shifting teeth (10) are fixedly connected with connecting rods (11), and the ends of the four connecting rods (11) are fixedly connected to a sleeve sleeved on the bottom rotating shaft of the stirring paddle (7), and a second motor (17) is fixedly installed at the bottom end of the stirring chamber (2), and the output shaft of the second motor (17) is inserted into the stirring chamber (2), and the end of the output shaft of the second motor (17) is fixedly connected to the bottom end of the sleeve.
6. A multi-axis rapid mixing device for BMC bulk molding compound raw materials according to claim 5, characterized in that: The mixing mechanism (12) comprises a wedge-shaped top (111) and an arc-shaped baffle (13), the top of each connecting rod (11) is fixedly connected to the wedge-shaped top (111), the top of one side of each wedge-shaped top (111) is fixedly connected to the arc-shaped baffle (13), and the end of the arc-shaped baffle (13) is fixedly connected to the top of the shifting tooth (10).
7. The multi-axis rapid mixing device for BMC bulk molding compound raw materials according to claim 5, characterized in that: The bottom of the connecting rod (11) is provided with a long strip-shaped mounting groove (14), one side of the top of the mounting groove (14) is rotatably connected to a scraper (15), the top of the scraper (15) is rotatably connected to the telescopic end of an electric cylinder (16), and the fixed end of the electric cylinder (16) is rotatably connected to the top of the mounting groove (14).