A raw material stirring machine for plastic product production

Abstract

The utility model relates to the technical field of plastic product production, and disclose a raw material mixer for plastic product production, including cylinder, fixedly connected with spiral conveying cylinder in the cylinder, rotationally connected with spiral shaft that has spiral blade in spiral conveying cylinder, still include: fixedly connected in the bottom plate of cylinder, the top of bottom plate and cylinder inner wall form storage space, and bottom plate is the flared mouth structure, and small end inner wall is fixedly connected with spiral conveying cylinder outer wall, and extends upwards along spiral conveying cylinder outer wall, and the fixed connection of discharge pipe has in the cylinder, and the one end of discharge pipe is linked with storage space, the scraper that rotates and connects in the cylinder, the bottom of scraper and the top of bottom plate are in abutment, when the scraper rotates, for pushing material to discharge pipe, the utility model discloses the bottom plate and scraper of flared mouth structure, can reduce the residue of raw materials, not only can reduce the waste of raw materials, but also can reduce the cross -contamination between different batches of products, reduce the cleaning difficulty.

Description

Technical Field

[0001] This utility model relates to the field of plastic product manufacturing technology, specifically to a raw material mixer for plastic product manufacturing. Background Technology

[0002] A raw material mixer for plastic product manufacturing, also commonly known as a plastic mixer or plastic blender, is a specialized piece of equipment used in the pre-processing stage of plastics manufacturing to uniformly mix various plastic raw materials (such as virgin materials, recycled materials, masterbatches, additives, etc.) in a specific ratio. Its main purpose is to ensure that the various components are fully and uniformly mixed before entering molding equipment such as extruders, injection molding machines, or blow molding machines, thereby guaranteeing the color consistency, physical property stability, and reliable quality of the final plastic products.

[0003] Currently, vertical mixers are commonly used. When a vertical lifting mixer is working, material is added to the mixing cylinder from the bottom. After startup, the motor drives a central vertical propeller to rotate at high speed via a reducer, drawing material from the bottom center of the cylinder and lifting it upwards along the spiral channel. Once the material is conveyed to the top, it is thrown outwards under centrifugal force, scattering onto the inner wall of the cylinder, forming a strong circulating convection of "rising in the center and sinking around the edges," achieving rapid and uniform mixing. After a set time, the machine automatically stops, opening the bottom discharge port, and the material is discharged under gravity. The main components include: a vertical cylindrical mixing cylinder, a central vertical spiral stirring paddle, a drive motor, a reducer, a support frame, a feed hopper, a bottom discharge valve, an electrical control system, and safety protection devices. It has a compact structure, is easy to operate, and is suitable for the pre-mixing of plastic raw materials.

[0004] However, when the bottom discharge port is opened, the material is discharged under gravity, and the material is often not discharged completely, leaving a lot of material in the cylinder. This not only wastes raw materials, but may also cause cross-contamination between different batches of products, increasing the difficulty of cleaning.

[0005] Therefore, existing technologies have shortcomings and need to be improved. Utility Model Content

[0006] This utility model provides a raw material mixer for the production of plastic products. By setting a funnel-shaped bottom plate and scraper, it can ensure that the material is discharged cleanly during discharge, thus solving the problems of raw material waste and cross-contamination mentioned in the background art.

[0007] This utility model provides the following technical solution:

[0008] A raw material mixer for plastic product manufacturing includes a cylinder, a spiral conveyor cylinder fixedly connected inside the cylinder, a spiral shaft with spiral blades rotatably connected inside the spiral conveyor cylinder, and a bottom plate fixedly connected inside the cylinder. The top of the bottom plate and the inner wall of the cylinder form a storage space. The bottom plate has a funnel-shaped structure, with its smaller end fixedly connected to the outer wall of the spiral conveyor cylinder and extending upward along the outer wall of the spiral conveyor cylinder. A discharge pipe is fixedly connected to the cylinder, with one end of the discharge pipe communicating with the storage space. A scraper is rotatably connected inside the cylinder, with its bottom abutting against the top of the bottom plate. When the scraper rotates, it pushes the material towards the discharge pipe.

[0009] As a preferred technical solution of this utility model, a fixing ring is fixedly connected to the cylinder, a second limiting groove is provided on the fixing ring, a connecting plate is fixedly connected to the scraper, and a second slider is fixedly connected to one end of the connecting plate that extends into the second limiting groove, and the second slider is rotatably connected to the second limiting groove.

[0010] As a preferred embodiment of this utility model, a toothed ring is rotatably connected to the outer wall of the cylinder, a first limiting groove is provided on the fixed ring, a first slider is fixedly connected to the top of the toothed ring, the first slider is rotatably connected to the first limiting groove, and a first strong magnetic block is fixedly connected to the end face of the connecting plate near the inner wall of the cylinder, and a plurality of second strong magnetic blocks that are magnetically attracted to the first strong magnetic block are fixedly connected to the inner wall of the toothed ring, and a driving part for driving the toothed ring to rotate is provided on the cylinder.

[0011] As a preferred embodiment of this utility model, the driving unit includes a dual-shaft motor fixedly connected to the outer wall of the cylinder. The dual-shaft motor has a first shaft and a second shaft. A third pulley is fixedly connected to the second shaft. An intermediate shaft is fixedly connected to the fixed ring. A gear is fixedly connected to the intermediate shaft. The outer wall of the gear meshes with the outer wall of the gear ring. A fourth pulley is fixedly connected to the intermediate shaft. The third pulley and the fourth pulley are driven by a second belt.

[0012] As a preferred embodiment of this utility model, a first pulley is fixedly connected to the first rotating shaft, and a second pulley is fixedly connected to one end of the spiral shaft extending out of the cylinder. The first pulley and the second pulley are driven by a first belt.

[0013] As a preferred embodiment of this utility model, a feeding bin is fixedly connected to the bottom of the cylinder, the bottom of the spiral conveying cylinder is connected to the inside of the feeding bin, and the top of the spiral conveying cylinder is open.

[0014] As a preferred embodiment of the present invention, the discharge pipe includes a first discharge pipe and a second discharge pipe, both of which are fixedly connected to valves, and the discharge port of the second discharge pipe is connected to the feed hopper.

[0015] Compared with the prior art, this utility model provides a raw material mixer for the production of plastic products, which has the following beneficial effects:

[0016] 1. In this raw material mixer for plastic product manufacturing, a funnel-shaped bottom plate is fixedly connected inside the cylinder. The raw material can gather along the inclined surface of the funnel towards the discharge pipe. Moreover, a scraper is rotated inside the cylinder. When the raw material is about to be discharged, it can push the raw material on the bottom plate towards the discharge pipe, further reducing the residue of raw material. This not only reduces the waste of raw material, but also reduces cross-contamination between different batches of products and reduces the difficulty of cleaning.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model utilizes a base plate and scraper with a funnel-shaped structure to reduce the residue of raw materials, which can not only reduce the waste of raw materials, but also reduce cross-contamination between different batches of products and reduce the difficulty of cleaning. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0019] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0020] Figure 1 This is a first-person perspective perspective view of the present invention.

[0021] Figure 2 This is a second-view perspective perspective view of the present invention;

[0022] Figure 3 This is a cross-sectional view of the present invention;

[0023] Figure 4 This utility model Figure 3 An enlarged schematic diagram of part A in the middle.

[0024] In the diagram: 1. Cylinder; 101. Feed hopper; 102. First discharge pipe; 103. Second discharge pipe; 104. Base plate; 2. Spiral conveyor cylinder; 201. Spiral shaft; 3. Fixing ring; 301. First limiting groove; 302. Second limiting groove; 4. Scraper; 401. Connecting plate; 402. First strong magnet; 5. Gear ring; 501. Second strong magnet; 6. Intermediate shaft; 601. Gear; 602. Fourth pulley; 7. Dual-shaft motor. Detailed Implementation

[0025] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below 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 scope of protection of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Reference Figures 1-4A raw material mixer for plastic product manufacturing includes a cylinder 1, a spiral conveyor cylinder 2 fixedly connected inside the cylinder 1, and a spiral shaft 201 with spiral blades rotatably connected inside the spiral conveyor cylinder 2. During use, the spiral shaft 201 rotates with the spiral blades, lifting the raw material at the bottom to the top of the spiral conveyor cylinder 2, and then throwing it from the top into the cylinder 1, achieving a mixing effect. The mixer also includes a bottom plate 104 fixedly connected inside the cylinder 1. The top of the bottom plate 104 forms a storage space with the inner wall of the cylinder 1. The bottom plate 104 has a funnel-shaped structure, with its smaller end fixedly connected to the outer wall of the spiral conveyor cylinder 2 and extending upwards along the outer wall of the spiral conveyor cylinder 2. That is, the smaller end of the funnel is located at the top, and the inclined surface serves as the top support surface, forming a storage space with the inner wall of the cylinder 1. The raw material thrown from the top of the spiral conveyor cylinder 2 falls into the storage space. Furthermore, a discharge pipe is fixedly connected to the cylinder 1, with one end of the discharge pipe connected to the storage space for discharging raw materials from the storage space; a scraper 4 is rotatably connected inside the cylinder 1, with the bottom of the scraper 4 abutting against the top of the bottom plate 104. When the scraper 4 rotates, it is used to push the material toward the discharge pipe, thereby reducing the residue of raw materials in the cylinder 1.

[0029] In use, the raw material can be gathered along the inclined surface of the flared end towards the discharge pipe by a bottom plate 104 fixedly connected inside the cylinder 1 in a funnel shape. Moreover, the scraper 4 is rotatably connected inside the cylinder 1, which can push the raw material on the bottom plate 104 towards the discharge pipe when the raw material is about to be discharged, further reducing the residue of raw material. This not only reduces the waste of raw material, but also reduces cross-contamination between different batches of products and reduces the difficulty of cleaning.

[0030] Reference Figures 2-4 A fixing ring 3 is fixedly connected to the cylinder 1. A second limiting groove 302 is provided at the bottom of one end of the fixing ring 3 located inside the cylinder 1. The second limiting groove 302 has a ring structure and is preferably a dovetail groove. During use, it can reduce the amount of material remaining in the dovetail groove. A connecting plate 401 is fixedly connected to the scraper 4. A second slider is fixedly connected at one end of the connecting plate 401 that extends into the second limiting groove 302. The second slider is rotatably connected to the second limiting groove 302. During use, because the fixing ring 3 has a second limiting groove 302, the scraper 4 can rotate around the axis of the cylinder 1 inside the cylinder 1 along the second limiting groove 302. During the rotation, the residual material can be pushed into the discharge pipe, reducing the amount of material remaining.

[0031] Reference Figure 3 and Figure 4A toothed ring 5 is rotatably connected to the outer wall of the cylinder 1. A first limiting groove 301 is provided on the fixed ring 3. The first limiting groove 301 has a T-shaped structure. A first slider is fixedly connected to the top of the toothed ring 5. The first slider is rotatably connected to the first limiting groove 301. A first strong magnetic block 402 is fixedly connected to the end face of the connecting plate 401 near the inner wall of the cylinder 1. A plurality of second strong magnetic blocks 501 that are magnetically attracted to the first strong magnetic block 402 are fixedly connected to the inner wall of the toothed ring 5. There are two to six second strong magnetic blocks 501, preferably four. A driving part for driving the toothed ring 5 to rotate is provided on the cylinder 1. In use, when the material in the cylinder 1 is almost discharged, the toothed ring 5 is driven to rotate. When the material in the cylinder 1 is almost discharged, the scraper 4 can be rotated by the magnetic attraction between the second strong magnetic blocks 501 and the first strong magnetic blocks 402, thereby cleaning the material in the cylinder 1 and improving the use effect. In addition, the material of the cylinder 1 is preferably 304 stainless steel, which can reduce interference with the magnetism of the magnetic block.

[0032] Reference Figures 3-4 The drive unit includes a dual-shaft motor 7 fixedly connected to the outer wall of the cylinder 1. The dual-shaft motor 7 has a first rotating shaft and a second rotating shaft. A third pulley is fixedly connected to the second rotating shaft. An intermediate shaft 6 is fixedly connected to the fixed ring 3. A gear 601 is fixedly connected to the intermediate shaft 6, and the outer wall of the gear 601 meshes with the outer wall of the gear ring 5. A fourth pulley 602 is fixedly connected to the intermediate shaft 6. The third pulley and the fourth pulley 602 are driven by a second belt. When the dual-shaft motor 7 is started, the fourth pulley 602 is rotated through the third pulley and the second belt. During the rotation of the fourth pulley 602, the gear 601 meshes with the gear ring 5, driving the gear ring 5 to rotate. This drives the scraper 4 to rotate and clean the residual raw materials. The operation is simple and convenient.

[0033] Reference Figure 1 and Figure 3 A first pulley is fixedly connected to the first rotating shaft, and a second pulley is fixedly connected to one end of the spiral shaft 201 extending out of the cylinder 1. The first pulley and the second pulley are driven by the first belt. That is to say, when in use, by starting the dual-shaft motor 7, the spiral shaft 201 can be rotated through the first pulley and the second pulley, thereby sucking in the raw material at the bottom of the cylinder 1 and conveying it to the top of the spiral conveying cylinder 2, and then throwing it into the cylinder 1 to achieve a stirring effect.

[0034] Reference Figures 1-3A feed hopper 101 is fixedly connected to the bottom of the cylinder 1. The bottom of the spiral conveyor cylinder 2 is connected to the feed hopper 101. The top of the spiral conveyor cylinder 2 is open. When in use, the raw material to be stirred is poured into the feed hopper 101. Then, the spiral shaft 201 is driven to rotate with the spiral blades, which can suck in the raw material in the feed hopper 101 and discharge it from the top of the spiral conveyor cylinder 2 to achieve the stirring effect.

[0035] Reference Figure 1 and Figure 2 Here, the discharge pipes include a first discharge pipe 102 and a second discharge pipe 103. Two first discharge pipes 102 are symmetrically arranged. Valves are fixedly connected to both the first and second discharge pipes 102 and 103, respectively. The outlet of the second discharge pipe 103 is connected to the feed hopper 101. When the valve of the second discharge pipe 103 is opened, the raw material can re-enter the feed hopper 101 through the second discharge pipe 103, achieving continuous and multiple mixing. After mixing is complete, the valve on the first discharge pipe 102 is opened, and the valve on the second discharge pipe 103 is closed. At this time, the raw material is discharged from the first discharge pipe 102 for subsequent use.

[0036] Components not described in detail in this article are existing technologies.

[0037] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A raw material mixer for producing plastic products, comprising a cylinder (1), wherein a spiral conveying cylinder (2) is fixedly connected inside the cylinder (1), and a spiral shaft (201) with spiral blades is rotatably connected inside the spiral conveying cylinder (2), characterized in that, Also includes: A bottom plate (104) is fixedly connected inside the cylinder (1), and the top of the bottom plate (104) forms a storage space with the inner wall of the cylinder (1). The bottom plate (104) has a funnel-shaped structure, the inner wall of the small end is fixedly connected to the outer wall of the spiral conveying cylinder (2), and extends upward along the outer wall of the spiral conveying cylinder (2). A discharge pipe is fixedly connected to the cylinder (1), and one end of the discharge pipe is connected to the storage space. Rotary scraper (4) is connected inside the cylinder (1). The bottom of the scraper (4) abuts against the top of the bottom plate (104). When the scraper (4) rotates, it is used to push the material toward the discharge pipe.

2. The raw material mixer for producing plastic products according to claim 1, characterized in that, A fixing ring (3) is fixedly connected to the cylinder (1), and a second limiting groove (302) is provided on the fixing ring (3). A connecting plate (401) is fixedly connected to the scraper (4), and a second slider is fixedly connected to one end of the connecting plate (401) that extends into the second limiting groove (302). The second slider is rotatably connected to the second limiting groove (302).

3. The raw material mixer for producing plastic products according to claim 2, characterized in that, The outer wall of the cylinder (1) is rotatably connected to a toothed ring (5), and a first limiting groove (301) is provided on the fixed ring (3). A first slider is fixedly connected to the top of the toothed ring (5), and the first slider is rotatably connected to the first limiting groove (301). A first strong magnetic block (402) is fixedly connected to the end face of the connecting plate (401) near the inner wall of the cylinder (1). A plurality of second strong magnetic blocks (501) that magnetically attract the first strong magnetic block (402) are fixedly connected to the inner wall of the toothed ring (5). A driving part for driving the toothed ring (5) to rotate is provided on the cylinder (1).

4. The raw material mixer for producing plastic products according to claim 3, characterized in that, The drive unit includes a dual-axis motor (7) fixedly connected to the outer wall of the cylinder (1). The dual-shaft motor (7) has a first shaft and a second shaft. A third pulley is fixedly connected to the second shaft. An intermediate shaft (6) is fixedly connected to the fixed ring (3). A gear (601) is fixedly connected to the intermediate shaft (6). The outer wall of the gear (601) meshes with the outer wall of the gear ring (5). A fourth pulley (602) is fixedly connected to the intermediate shaft (6). The third pulley and the fourth pulley (602) are driven by a second belt.

5. A raw material mixer for producing plastic products according to claim 3, characterized in that, A first pulley is fixedly connected to the first rotating shaft, and a second pulley is fixedly connected to one end of the spiral shaft (201) extending out of the cylinder (1). The first pulley and the second pulley are driven by a first belt.

6. The raw material mixer for producing plastic products according to claim 1, characterized in that, The bottom of the cylinder (1) is fixedly connected to the feed bin (101), the bottom of the spiral conveyor cylinder (2) is connected to the inside of the feed bin (101), and the top of the spiral conveyor cylinder (2) is open.

7. The raw material mixer for producing plastic products according to claim 6, characterized in that, The discharge pipe includes a first discharge pipe (102) and a second discharge pipe (103). Valves are fixedly connected to both the first discharge pipe (102) and the second discharge pipe (103), and the outlet of the second discharge pipe (103) is connected to the feed hopper (101).

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