Raw material mixing device for EVA plastic preparation

Abstract

The utility model belongs to plastic technology field, and disclose a raw material mixing device for EVA plastic preparation, including mixing cylinder, the below of mixing cylinder is provided with reciprocating structure, the inside of mixing cylinder is provided with stirring structure, the reciprocating structure includes the bottom plate of the bottom of mixing cylinder, through the cooperation and cooperation of reciprocating structure and stirring structure, the mixing effect of raw materials has been improved, two rotating rods rotate by double -shaft motor drive, drive sprocket and chain transmission make drive rod and rotating rod drive all cam synchronous rotation, cam pushes along first slide rail and moves the mounting block, and the sliding of sliding block in second slide rail and the elastic action of hydraulic buffer rod and spring are combined, realize the up and down reciprocating of mixing cylinder, make the raw material in the cylinder change position constantly, stirring structure carries out stirring while reciprocating motion of mixing cylinder, two kinds of movement forms are superposed, accelerate the mutual penetration and contact of different raw materials such as EVA resin particle.

Description

Technical Field

[0001] This utility model relates to the field of plastics technology, and in particular to a raw material mixing device for EVA plastic preparation. Background Technology

[0002] In the prior art, raw material mixing devices for EVA plastic preparation typically include a mixing tank, a drive motor, and a mixing structure. The mixing structure is mostly a single stirring paddle, which can achieve mixing of raw materials such as EVA resin particles, crosslinking agents, and plasticizers. Some devices have a fixed tank with a flat or simple arc-shaped bottom. The drive system mostly uses a single motor to drive the stirring shaft to rotate. A few devices will have a heating component installed outside the tank to assist in raw material mixing.

[0003] In studying existing plastics technology, some obvious problems were found: In the existing technology, when raw materials are mixed, a large amount of raw materials remain in the mixing drum. This not only wastes raw materials, but also causes the mixing process to be uneven, thus affecting the mixing efficiency of the mixer.

[0004] Therefore, the aforementioned technical problems need to be solved. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the basic technical solution proposed by this utility model is: a raw material mixing device for EVA plastic preparation, including a mixing cylinder, a reciprocating structure is provided below the mixing cylinder, and a stirring structure is provided inside the mixing cylinder;

[0006] The reciprocating structure includes a base plate located at the bottom of the mixing cylinder and mounting blocks arranged in a rectangular pattern on the outside of the mixing cylinder, as well as cams slidably connected to the mounting blocks. The top of the base plate is equipped with a first slide rail that is slidably adapted to the mounting blocks, and also has a second slide rail and four telescopic rods arranged symmetrically.

[0007] Preferably, a drive rod is mounted between two of the cams, and a rotating rod is mounted on the opposite side of the other two cams.

[0008] Preferably, a raised seat is provided on the top surface of the base plate, and a dual-axis motor is fixedly connected to the top of the raised seat.

[0009] Preferably, the two output ends of the dual-axis motor are fixedly connected to two rotating rods, and a drive sprocket is installed on the outside of one of the rotating rods and the drive rod.

[0010] Preferably, the two drive sprockets are externally meshed with chains, the inner wall of the second slide rail is slidably connected with a slider, the inner bottom wall of the second slide rail is equipped with a hydraulic buffer rod, and the hydraulic buffer rod is externally sleeved with a spring.

[0011] Preferably, the top of the spring is fixedly connected to the bottom of the slider, and the slider is fixedly connected to the left and right sides of the mixing cylinder.

[0012] Preferably, the stirring structure includes a drive motor installed at the top of the mixing cylinder, a stirring rod fixedly connected to the output end of the drive motor, and a discharge pipe provided at the bottom of the mixing cylinder.

[0013] Preferably, a solenoid valve is provided on the outside of the discharge pipe, and a feeding pipe is installed on the top surface of the mixing cylinder.

[0014] The beneficial effects of this utility model are:

[0015] The synergistic cooperation of the reciprocating structure and the stirring structure enhances the mixing effect of raw materials. A dual-axis motor drives two rotating rods, which, via a drive sprocket and chain transmission, cause all cams to rotate synchronously. The cams push the mounting block along the first slide rail. Combined with the sliding of the slider within the second slide rail and the elastic action of the hydraulic buffer rod and spring, the mixing drum reciprocates up and down, causing the raw materials inside to continuously change position, reducing dead zones in the mixing. The stirring structure stirs simultaneously with the reciprocating motion of the mixing drum. The superposition of these two motions accelerates the mutual penetration and contact of different raw materials such as EVA resin particles, improving mixing uniformity. During this process, the telescopic rod enhances the stability of the mixing drum's movement, preventing tilting or deviation during the shaking process, thereby reducing raw material residue and lowering production costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the reciprocating structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the stirring rod of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Mixing cylinder; 2. Reciprocating structure; 21. Base plate; 22. Mounting block; 23. Cam; 24. First slide rail; 25. Second slide rail; 251. Slider; 252. Hydraulic buffer rod; 253. Spring; 26. Telescopic rod; 27. Rotating rod; 28. Dual-axis motor; 29. ​​Drive sprocket; 291. Chain; 3. Stirring structure; 31. Drive motor; 32. Stirring rod; 33. Discharge pipe; 34. Feeding pipe. Detailed Implementation

[0023] The following will be combined with the appendix Figure 1 To be continued Figure 5 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that, in the embodiments of this utility model, the directions shown in the accompanying drawings shall prevail, such as front and back. Figure 1 For the sake of accuracy, the specific details should be as follows: Figure 1 The left side is the front. Figure 1 The right side is the rear; at the same time, as Figure 2 As shown, the horizontal direction is roughly defined as left and right, and the vertical direction is defined as up and down. If a specific orientation changes, the directional indication will also change accordingly.

[0025] Example 1

[0026] Please see Figure 1 - Figure 5 As shown, this embodiment provides a raw material mixing device for EVA plastic preparation, including a mixing cylinder 1, a reciprocating structure 2 arranged below the mixing cylinder 1, and a stirring structure 3 arranged inside the mixing cylinder 1;

[0027] The reciprocating structure 2 includes a base plate 21 located at the bottom of the mixing cylinder 1 and mounting blocks 22 assembled on the outside of the mixing cylinder 1 in a rectangular distribution, and a cam 23 slidably connected to the mounting blocks 22. The top of the base plate 21 is equipped with a first slide rail 24 that is slidably adapted to the mounting blocks 22, and also has a second slide rail 25 and four telescopic rods 26 symmetrically distributed.

[0028] This invention addresses the issue that, in existing technologies, a large amount of material remains in the mixing drum during raw material mixing, leading to material waste and reduced mixer efficiency due to uneven mixing. Therefore, by coordinating the reciprocating structure 2 and the stirring structure 3, the mixing effect of the raw materials is improved. A dual-shaft motor 28 drives two rotating rods 27 to rotate, which, via a drive sprocket 29 and chain 291, causes the drive rods and rotating rods 27 to drive all cams 23 to rotate synchronously. The cams 23 push the mounting block 22 to move along the first slide rail 24. Combined with the sliding of the slider 251 within the second slide rail 25 and the elastic action of the hydraulic buffer rod 252 and spring 253, the mixing drum 1 reciprocates, causing the raw materials inside the drum to continuously change position, reducing mixing dead zones. The stirring structure 3 stirs the mixture while the mixing drum 1 reciprocates. The superposition of these two motions accelerates the mutual penetration and contact of different raw materials such as EVA resin particles, improving mixing uniformity. During this process, the telescopic rod 26 enhances the stability of the mixing drum 1's movement, preventing tilting or deviation during the shaking process, thereby reducing material residue and lowering production costs.

[0029] Example 2

[0030] like Figure 2 - Figure 5 As shown, a drive rod is installed between two cams 23, and a rotating rod 27 is installed on the opposite side of the other two cams 23. A raised seat is provided on the top surface of the base plate 21, and a dual-axis motor 28 is fixedly connected to the top of the raised seat. The two output ends of the dual-axis motor 28 are fixedly connected to the two rotating rods 27 respectively. A drive sprocket 29 is installed on the outside of one of the rotating rods 27 and the drive rod. A chain 291 is meshed with the outside of the two drive sprockets 29. A slider 251 is slidably connected to the inner wall of the second slide rail 25. A hydraulic buffer rod 252 is installed on the inner bottom wall of the slide rail 25. A spring 253 is sleeved on the outside of the hydraulic buffer rod 252. The top of the spring 253 is fixedly connected to the bottom of the slider 251. The slider 251 is fixedly connected to the left and right sides of the mixing cylinder 1. The stirring structure 3 includes a drive motor 31 installed on the top of the mixing cylinder 1 and a stirring rod 32 fixedly connected to the output end of the drive motor 31. A discharge pipe 33 is provided at the bottom of the mixing cylinder 1. A solenoid valve is provided on the outside of the discharge pipe 33. A feeding pipe 34 is installed on the top surface of the mixing cylinder 1.

[0031] The above scheme is adopted: the hydraulic buffer rod 252 and the spring 253 play a buffering and shock absorption role when the mixing cylinder 1 reciprocates, reducing the impact and vibration during the operation of the equipment. The four symmetrically distributed telescopic rods 26 further limit the deviation of the mixing cylinder 1, so that it always maintains a stable posture during reciprocating motion, reducing the residue caused by the unstable shaking of raw materials.

[0032] It is worth noting that the servo motor and drive motor 31 are both commercially available conventional devices with built-in power switches. Those skilled in the art can make conventional selections according to their needs. Furthermore, the meshing connection between the chain 291 and the sprocket will not slip. The working principles of the above-mentioned parts are common knowledge known to those skilled in the art and have been fully disclosed in the prior art, so they will not be elaborated further in this article.

[0033] Work steps:

[0034] First, different raw materials such as EVA resin granules are fed into the cylinder through the feeding pipe 34. Then, the dual-shaft motor 28 is started, and its two output ends drive two rotating rods 27 to rotate. At this time, the rotating rods 27 drive the drive sprocket 29 to rotate, and with the help of the chain 291, the drive rod also rotates, thereby driving all the cams 23 to rotate synchronously. When the cams 23 rotate, they push the mounting block 22 to move along the first slide rail 24, while the slider 251 slides in the second slide rail 25, so that the mixing cylinder 1 can swing up and down, causing the raw materials in the cylinder to continuously change position. At the same time, the drive motor 31 in the stirring structure 3 is started. The output end of the drive motor 31 drives the stirring rod 32 to rotate, stirring the raw materials in the cylinder. The reciprocating motion of the mixing cylinder 1 and the stirring motion of the stirring rod 32 are superimposed, which accelerates the mutual penetration and contact of different raw materials, effectively reduces the mixing dead zone, and improves the mixing uniformity. After the mixing is completed, the solenoid valve on the discharge pipe 33 at the bottom of the mixing cylinder 1 is opened to discharge the uniformly mixed raw materials.

[0035] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A raw material mixing device for EVA plastic preparation, comprising a mixing cylinder (1), characterized in that: A reciprocating structure (2) is provided below the mixing cylinder (1), and a stirring structure (3) is provided inside the mixing cylinder (1). The reciprocating structure (2) includes a base plate (21) located at the bottom of the mixing cylinder (1) and mounting blocks (22) assembled on the outside of the mixing cylinder (1) and arranged in a rectangular pattern, and a cam (23) slidably connected to the mounting blocks (22). The top of the base plate (21) is equipped with a first slide rail (24) that is slidably adapted to the mounting blocks (22), and also has a second slide rail (25) and four telescopic rods (26) arranged symmetrically.

2. The raw material mixing device for EVA plastic preparation according to claim 1, characterized in that: A drive rod is installed between two of the cams (23), and a rotating rod (27) is installed on the opposite side of the other two cams (23).

3. The raw material mixing device for EVA plastic preparation according to claim 2, characterized in that: The top surface of the base plate (21) is provided with a raised seat, and a dual-axis motor (28) is fixedly connected to the top of the raised seat.

4. The raw material mixing device for EVA plastic preparation according to claim 3, characterized in that: The two output ends of the dual-axis motor (28) are fixedly connected to the two rotating rods (27), and a drive sprocket (29) is installed on the outside of both the rotating rod (27) and the drive rod.

5. The raw material mixing device for EVA plastic preparation according to claim 4, characterized in that: The two drive sprockets (29) are externally meshed with chains (291), the inner wall of the second slide rail (25) is slidably connected with sliders (251), the inner bottom wall of the second slide rail (25) is equipped with a hydraulic buffer rod (252), and the outer side of the hydraulic buffer rod (252) is fitted with a spring (253).

6. The raw material mixing device for EVA plastic preparation according to claim 5, characterized in that: The top of the spring (253) is fixedly connected to the bottom of the slider (251), and the slider (251) is fixedly connected to the left and right sides of the mixing cylinder (1).

7. The raw material mixing device for EVA plastic preparation according to claim 1, characterized in that: The stirring structure (3) includes a drive motor (31) installed on the top of the mixing cylinder (1), a stirring rod (32) fixedly connected to the output end of the drive motor (31), and a discharge pipe (33) provided at the bottom of the mixing cylinder (1).

8. The raw material mixing device for EVA plastic preparation according to claim 7, characterized in that: An electromagnetic valve is provided on the outside of the discharge pipe (33), and a feeding pipe (34) is installed on the top surface of the mixing cylinder (1).

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