Raw material mixing device for SPC floor processing

Abstract

The application discloses a raw material mixing device for SPC floor processing and belongs to the technical field of SPC floor processing. Mainly includes support and fixedly arranged on the upper end of the support The tank body with a feeding port, meanwhile, a weighing mechanism is arranged on the upper end of the tank body, the weighing mechanism comprises a fixing frame arranged on the upper end of the tank body, and a weighing hopper is arranged between the fixing frames, sensors are arranged at the connection positions of the two sides of the weighing hopper and the fixing frames, meanwhile, guide grooves are arranged on the two sides of the weighing hopper, and air cylinders are arranged on the two sides of the weighing hopper, the output ends of the air cylinders are provided with valve plates, and the valve plates are arranged in the guide grooves. The raw material mixing device for SPC floor processing reaches the effects that the trace additives are automatically weighed and fed with high precision, the residues in the hopper are completely removed, the formula accuracy is ensured, and cross contamination is avoided.

Description

Technical Field

[0001] This application relates to the field of SPC flooring processing technology, specifically to a raw material mixing device for SPC flooring processing. Background Technology

[0002] SPC flooring, as a new type of green and environmentally friendly floor decoration material, has a core base material made of limestone powder (calcium carbonate), polyvinyl chloride (PVC) resin, and a variety of functional additives through high-temperature extrusion molding. The raw material mixing unit for SPC flooring processing is a key pretreatment equipment in the SPC stone plastic flooring production line. Its main function is to fully physical mix and pre-plasticize the various solid raw materials that make up the flooring substrate.

[0003] For example, the patent with publication number CN221492624U discloses a raw material grinding and mixing device for processing mineral steel-plastic flooring. This patent installs a transmission unit and a grinding mechanism in the stirring and mixing mechanism. When the transmission rod rotates, the grinding roller in the middle of the grinding box can be driven to rotate in opposite directions through the linkage of the grinding roller, the driven wheel and the driven wheel. At the same time, the kinetic energy of the transmission rod is recovered and the mineral is ground. However, the production process generally relies on manual weighing and addition of these trace additives. Operators use simple weighing tools to weigh the additives and then pour them into the mixing unit through an open feeding port. This traditional manual feeding method may easily lead to deviations in the weighing results due to visual errors, resulting in unstable formulation ratios between batches. This affects key performance indicators such as the density, hardness, and heat resistance of the SPC substrate, ultimately leading to inconsistent product quality. Therefore, it is necessary to provide a raw material mixing device for SPC flooring processing to solve the above problems.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0005] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a raw material mixing device for SPC flooring processing, which solves the technical problems of poor accuracy, dust flying and cross-contamination caused by manual weighing of trace additives in the SPC flooring production process.

[0006] The technical solution adopted by this application to solve its technical problem is: a raw material mixing device for SPC flooring processing, including a support and a tank with a feeding port fixedly installed on the upper end of the support; A weighing mechanism is disposed at the upper end of the tank body, and the weighing mechanism includes: A mounting bracket is provided at the upper end of the tank body; A weighing hopper is disposed between the fixed frames; The sensor is located at the connection between the weighing hopper and the fixed frame on both sides; Guide grooves are provided on both sides of the weighing hopper; A cylinder is located on both sides of the weighing hopper; A valve plate is disposed inside the guide groove and is fixedly connected to the output end of the cylinder.

[0007] Furthermore, the valve plate is configured as a semi-circle.

[0008] Furthermore, a sealing gasket is embedded in the inner edge of the valve plate and on the contact surface with the bottom of the weighing hopper.

[0009] Furthermore, a flexible pipe is fixedly connected between the bottom outlet of the weighing hopper and the feeding port of the tank, and the inner wall of the flexible pipe is smooth.

[0010] Furthermore, a blowing assembly is provided at the top of the weighing hopper, the blowing assembly including multiple sets of brackets fixedly disposed on the inner side of the top of the weighing hopper, and pipes are fixedly installed on the brackets.

[0011] Furthermore, the pipe is provided with an inlet, and multiple downward-sloping nozzles are evenly distributed on the lower side of the pipe.

[0012] The beneficial effects of this application are: the raw material mixing device for SPC flooring processing provided by this application, by setting up a weighing mechanism composed of blowing components, achieves high-precision and automated weighing and feeding of trace additives and thoroughly removes residues in the hopper, thereby ensuring the accuracy of the formula and avoiding cross-contamination.

[0013] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an overall schematic diagram of the raw material mixing device for SPC flooring processing in this application; Figure 2 This is an exploded cross-sectional schematic diagram of the entire raw material mixing device for SPC flooring processing in this application; Figure 3 for Figure 2 A schematic diagram of B in the middle; Figure 4 for Figure 1 A schematic diagram of A in the middle; Figure 5 for Figure 2 A cross-sectional schematic diagram of the weighing mechanism; Figure 6 for Figure 5 A schematic diagram of C in the middle; The following are the labeling elements in the figure: 1. Support frame; 2. Tank body; 3. Mixing mechanism; 30. Motor; 31. Rotating shaft; 32. Mixing blades; 33. Feeding port; 34. Discharge port; 4. Weighing mechanism; 40. Fixing frame; 41. Weighing hopper; 42. Sensor; 43. Cylinder; 44. Valve plate; 45. Guide groove; 46. Sealing gasket; 47. Flexible pipe; 48. Blowing assembly; 480. Pipe; 481. Nozzle; 483. Inlet; 482. Mounting bracket. Detailed Implementation

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0017] like Figures 1-4 As shown, the raw material mixing device for SPC flooring processing provided in this application is mainly fixedly installed in the raw material pretreatment area of ​​the SPC flooring production workshop. It is used to uniformly mix PVC resin, calcium carbonate, and key raw materials such as stabilizers and lubricants to provide qualified mixture for the subsequent extrusion molding process. Specifically, the raw material mixing device includes a support 1, and a tank 2 for containing and mixing raw materials is fixedly installed on the upper end of the support 1. In order to drive the mixing of raw materials inside the tank 2, a mixing mechanism 3 is provided inside the tank 2. The mixing mechanism 3 includes a motor 30 fixedly installed on the outer wall of the tank 2. The output end of the motor 30 extends horizontally through the side wall of the tank 2 and into its interior. A rotating shaft 31 is fixedly connected to the end of the output end, and multiple sets of mixing blades 32 are fixedly installed on the rotating shaft 31 along its axial and circumferential directions. Thus, when the motor 30 is started, it can drive the rotating shaft 31 to drive all the mixing blades 32 to rotate at high speed inside the tank 2, thereby efficiently and uniformly mixing the various raw materials put in. Meanwhile, a feeding port 33 is provided at the top of the tank body 2. The feeding port 33 is directly connected to the internal cavity of the tank body 2, so that the raw materials can be smoothly introduced into the tank through this port. After the mixing operation is completed, in order to discharge the evenly mixed material, a discharge port 34 is provided at the center of the bottom of the tank body 2, and a pneumatic or manual valve is provided here to control the discharge of the material. To address the difficulty of manually adding trace additives, such as Figure 1 and Figures 4-6 As shown, a weighing mechanism 4 is provided at the upper end of the tank body 2 and directly above the feeding port 33. The weighing mechanism 4 includes fixed frames 40 that are symmetrically fixedly installed on both sides of the upper end of the tank body 2 and around the feeding port 33. At the same time, a weighing hopper 41 for receiving and weighing additives is suspended between the two fixed frames 40. In order to enable the weighing hopper 41 to sensitively sense the weight of the material inside, sensors 42 are installed at the connection between the weighing hopper 41 and the two fixed frames 40. The sensors 42 are conventional weighing sensors in the art, and their signals can be transmitted to an external PLC control system, so that the weight of the additives in the weighing hopper 41 can be measured in real time and accurately. In order to control the opening and closing of the bottom outlet of the weighing hopper 41, guide grooves 45 are respectively machined on both sides of the bottom end of the weighing hopper 41. At the same time, valve plates 44 are slidably arranged in each of the two guide grooves 45. Both valve plates 44 are designed to be semi-circular. When they meet on the inside, they can be assembled into a complete disc to close the bottom outlet of the weighing hopper 41. In order to ensure the sealing when closed and prevent the leakage of fine powder, sealing gaskets 46 are embedded on the inner edge of each valve plate 44 and on the contact surface with the bottom of the weighing hopper 41. Meanwhile, on both sides of the bottom of the weighing hopper 41, a cylinder 43 is fixedly installed. The output end of the cylinder 43 is connected to the outer center of the valve plate 44 on the corresponding side. Thus, by activating the two cylinders 43 simultaneously, the two sets of valve plates 44 can be driven to slide along the guide groove 45, so as to achieve the effect of moving closer to each other to close the weighing hopper 41, or moving further apart to open the weighing hopper 41. Before adding the additive, first ensure that both valve plates 44 are closed to seal the bottom of the weighing hopper 41. Then, manually or automatically feed the trace amount of additive to be added into the weighing hopper 41. At this time, the sensor 42 will feed back the weight data to the control system in real time until the weight value set in the formula is reached. After weighing, the control system issues a command to start the two cylinders 43. The piston rod of the cylinder 43 retracts and pulls the two valve plates 44 to move to both sides along the guide groove 45, opening the bottom outlet of the weighing hopper 41. The weighed additive then begins to fall under the action of gravity. Meanwhile, a flexible pipe 47 is fixedly connected between the bottom outlet of the weighing hopper 41 and the feeding port 33 of the tank body 2. The inner wall of the flexible pipe 47 is smooth, thereby effectively reducing the adhesion and residue of materials in the pipe and ensuring smooth feeding. To address the issue of trace amounts of additives potentially adhering to the inner wall of the weighing hopper 41, a blowing assembly 48 is provided at the top of the weighing hopper 41. The blowing assembly 48 includes multiple sets of retainers 482 fixedly disposed on the inner side of the top of the weighing hopper 41, and a pipe 480 is fixedly installed on the retainer 482. The pipe 480 serves as an annular air chamber for temporarily storing and distributing the compressed air that is introduced. Meanwhile, an inlet 483 is provided on the annular pipe 480 to introduce clean, dry air from the outside into the pipe 480. Along the lower side of the annular pipe 480, multiple downward-sloping nozzles 481 are evenly distributed. The spray direction of these nozzles 481 can cover the side wall of the weighing hopper 41. Thus, after the main part of the additive is fed, the control system will briefly turn on the air source. Compressed air enters the annular pipe 480 through the inlet 483 and is finally sprayed out at high speed from all the nozzles 481, forming one or more directional airflows. This thoroughly blows off the residual raw materials adhering to the inner wall of the weighing hopper 41 and allows them to enter the feeding port 33 of the tank 2 through the flexible pipe 47 along with the main material flow, thereby ensuring the integrity and accuracy of each feeding.

[0018] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A raw material mixing device for SPC flooring processing, comprising a support (1) and a tank (2) with a feeding port (33) fixedly disposed on the upper end of the support (1), characterized in that: A weighing mechanism (4) is disposed at the upper end of the tank (2), and the weighing mechanism (4) includes: A fixing bracket (40) is provided at the upper end of the tank body (2); A weighing hopper (41) is disposed between the fixed frames (40); Sensor (42) is disposed at the connection between the weighing hopper (41) and the fixing frame (40) on both sides; Guide grooves (45) are provided on both sides of the weighing hopper (41); Cylinder (43), which is disposed on both sides of the weighing hopper (41); Valve plate (44) is disposed inside the guide groove (45) and is fixedly connected to the output end of the cylinder (43).

2. The raw material mixing device for SPC flooring processing according to claim 1, characterized in that: The valve plate (44) is configured as a semi-circle.

3. The raw material mixing device for SPC flooring processing according to claim 1, characterized in that: A sealing gasket (46) is embedded in the inner edge of the valve plate (44) and on the contact surface with the bottom of the weighing hopper (41).

4. The raw material mixing device for SPC flooring processing according to claim 1, characterized in that: A flexible pipe (47) is fixedly connected between the bottom outlet of the weighing hopper (41) and the feeding port (33) of the tank (2), and the inner wall of the flexible pipe (47) is smooth.

5. The raw material mixing device for SPC flooring processing according to claim 1, characterized in that: The top of the weighing hopper (41) is provided with a blowing assembly (48), which includes multiple sets of brackets (482) fixedly disposed on the inner side of the top of the weighing hopper (41), and pipes (480) are fixedly installed on the brackets (482).

6. The raw material mixing device for SPC flooring processing according to claim 5, characterized in that: The pipe (480) is provided with an inlet (483), and a plurality of downwardly inclined nozzles (481) are evenly distributed on the lower side of the pipe (480).

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