Production process and mixing device of anti-static floor containing metal wires

Abstract

The application discloses a metal wire-containing anti-static floor production process and a mixing device, and relates to the technical field of anti-static floors, wherein the production process comprises the following steps: A1, mixing and stirring PVC powder, a plasticizer, a stabilizer, light GaCO3 powder and stainless steel wires, plasticizing the mixture through an extruder and preparing conductive material; A2, preparing the conductive material into a sheet shape through a calender and then crushing the sheet into a granular shape to obtain conductive particles; B1, mixing conductive carbon black and PVC particles, plasticizing and extruding the mixture through an extruder to prepare bottom layer particles for standby; C1, spreading the bottom layer particles on a conveying belt through a spreader; C2, mixing the conductive particles and the PVC particles, spreading the mixture on the bottom layer particle layer to form a raw material layer through a spreader; C3, hot-pressing the raw material layer into a floor through a forming machine; and C4, performing edge cutting on the floor after tempering treatment and surface stain resistance treatment. The application has the effects of improving the conductivity of the anti-static floor and the conductivity stability of the anti-static floor after long-time use.

Description

Technical Field

[0001] This application relates to the technical field of antistatic flooring, and in particular to a manufacturing process and mixing equipment for antistatic flooring containing metal wires. Background Technology

[0002] Currently, the main production methods and types of PVC antistatic flooring can be divided into the following three categories: 1. The powder is placed into a honeycomb mold of antistatic conduit assembly and hot-pressed into a large block, and then cut into sheets; 2. The mixture of conductive particles and ordinary particles in a certain proportion is hot-pressed and molded. 3. Add the antistatic agent to the flooring material and heat-press it into shape;

[0003] All three methods can produce antistatic flooring. Apart from the different advantages and disadvantages brought about by their respective production methods, they all share a common drawback: after long-term use or during use, it cannot be guaranteed that every area of ​​the floor can achieve good and stable conductivity. Summary of the Invention

[0004] In order to improve the shortcomings of existing antistatic flooring that cannot ensure good and stable conductivity in each area after long-term use, this application provides a manufacturing process and mixing equipment for antistatic flooring containing metal wires.

[0005] The manufacturing process for an antistatic floor containing metal wires provided in this application adopts the following technical solution: A manufacturing process for antistatic flooring containing metal wires includes the following steps: A1. Mix 80-100 parts of PVC powder, 35-45 parts of plasticizer, 3-5 parts of stabilizer, 50-100 parts of light GaCO3 powder, and 10-15 parts of stainless steel wire, then plasticize the mixture using an extruder to produce a conductive material. A2. Conductive material is calendered into sheets and then crushed into granules to obtain conductive particles. B1. Mix 20-30 parts of conductive carbon black and 80-100 parts of PVC granules, then extrude the mixture through an extruder to form bottom granules for later use. C1. The bottom particles are spread onto the conveyor belt by a spreader; C2. Mix conductive granules and PVC granules in a ratio of 3:20, and spread them on the bottom granule layer using a spreader to form a raw material layer. C3. The raw material layer is hot-pressed into flooring using a molding machine; C4. After tempering and surface stain-resistant treatment, trim the edges of the flooring.

[0006] Optionally, the stainless steel wire has a length range of 5-20mm and a diameter range of 0.005-0.02mm.

[0007] Optionally, in step A2, the particle size of the conductive particles ranges from 0.5 to 1 mm.

[0008] Optionally, in step B1, the particle size of the bottom layer particles does not exceed 2 mm.

[0009] Optionally, in step A1, the stainless steel wire is first mixed with the PVC powder, and then mixed together with the remaining materials.

[0010] This application also provides a mixing device for antistatic flooring raw materials containing metal wires, which adopts the following technical solution: A mixing device for antistatic flooring containing metal wires, used to produce the aforementioned antistatic flooring containing metal wires, comprising: Frame; The coiler is mounted on a rotating frame for holding metal wire coils; Conveyor rollers, which are mounted on a frame and arranged in pairs, clamp metal wires for conveying. The cutting frame is mounted on the frame body and located on the side of the conveyor roller away from the winding machine. The metal wire passes through the cutting frame, and the cutting frame is slidably connected to the cutting blade. The cutting blade is driven by a telescopic cylinder mounted on the cutting frame. The feed hopper, mounted on one side of the cutting frame, is used to collect the cut metal wires. The screw conveyor is connected to the discharge shell at the top, the feed inlet to the hopper, and the discharge outlet to the mixing device.

[0011] Optionally, the feed shell is rotatably connected to a receiving plate on the side of the cutting frame away from the coiler, and the cut metal wire will be located on the receiving plate; The feeding shell is equipped with a baffle, and a torsion spring is installed at the rotating shaft of the receiving plate to make the receiving plate abut against the bottom of the baffle; A drive frame is mounted above the material discharge shell, and a sliding plate is slidably connected to the drive frame. The drive frame is equipped with a drive mechanism that drives the sliding plate to slide down. When the sliding plate moves down, it can abut against the receiving plate and drive the receiving plate to rotate downward.

[0012] Optionally, a positioning cylinder is fixedly provided on the side wall of the sliding plate, and a sliding rod is slidably connected inside the positioning cylinder. The top of the sliding rod cannot pass through the positioning cylinder. A pressure plate is fixedly provided at the bottom of the sliding rod. The pressure plate is directly opposite the receiving plate. A stop block is provided on the unloading shell. When the pressure plate and the stop block abut against each other, they can be kept in contact with the top of the metal wire on the receiving plate. During the upward movement of the sliding plate, the positioning cylinder abuts against the top of the sliding rod and drives the sliding rod to move upward.

[0013] Optionally, the screw conveyor includes a main shaftless auger, with multiple reinforcing plates fixed between the augers at both ends of the main shaftless auger.

[0014] Optionally, a secondary shaftless auger is fixedly provided on the inner wall of the main shaftless auger, and the secondary shaftless auger has the opposite rotation direction to the main shaftless auger.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. By utilizing the conductivity of stainless steel wire to replace traditional conductive particles and other materials in the production of antistatic flooring, conductive particles with stainless steel wire are formed through mixing and granulation. These conductive particles are then mixed with ordinary PVC particles as the surface material of the antistatic flooring and hot-melt molding. This results in better and more uniform and stable conductivity on the surface of the antistatic flooring. Stainless steel wire itself also has wear-resistant and corrosion-resistant properties, forming a new type of antistatic flooring product. 2. Since the stainless steel wire itself is relatively thin, after being cut in rows, the stainless steel wire and PVC powder are mixed using the inherent length of the spiral conveying channel of the PVC powder. The stainless steel wire is broken up during the conveying process of the PVC powder, thereby reducing the clumping of the stainless steel wire during the mixing process and improving the uniformity of the mixture. 3. Because the stainless steel wire involves a cutting process, the conveying is intermittent. This intermittent conveying and the width of the stainless steel wire in rows allow for a mixed conveying method that is compatible with the conveying of the screw feeder. This reduces the phenomenon of the stainless steel wire being directly and completely thrown into the mixing tank after being cut, resulting in it being agglomerated by high-speed mixing. Attached Figure Description

[0016] Figure 1 This is a process flow diagram of Embodiment 1 of this application; Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this application; Figure 3 This is the structure of the display driver frame in Embodiment 2 of this application; Figure 4 This is a partial cross-sectional view of the cutting frame shown in Embodiment 2 of this application; Figure 5 This is a partial cross-sectional view of Embodiment 2 of this application showing the flipped state of the receiving plate; Figure 6 This is a partial cross-sectional view of Embodiment 2 of this application showing the pressure plate in an upward-moving state; Figure 7 This is a partial cross-sectional view of the screw conveyor shown in Embodiment 2 of this application; Figure 8 In Embodiment 2 of this application Figure 7 Section A shows an enlarged view of the reinforcement plate; Figure 9This is a schematic diagram showing the outer diameter values ​​of the primary shaftless auger and the secondary shaftless auger in Embodiment 2 of this application; In the diagram, 1. Frame; 11. Conveyor roller; 12. Stretching roller; 2. Roller; 3. Cutting frame; 31. Cutting plate; 32. Cutting blade; 4. Feeding shell; 41. Receiving plate; 42. Baffle; 43. Stop block; 44. Feeding channel; 5. Screw conveyor; 51. Main shaftless auger; 511. Reinforcing plate; 52. Secondary shaftless auger; 6. Drive frame; 61. Sliding plate; 611. Positioning cylinder; 6121. Sliding rod; 6121. Pressure plate; 62. Drive mechanism. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0018] This application discloses a manufacturing process and mixing equipment for antistatic flooring containing metal wires. The manufacturing process and mixing equipment are described below.

[0019] Example 1

[0020] refer to Figure 1 The manufacturing process of antistatic flooring containing metal wires includes the following steps: A1. Mix 80-100 parts of PVC powder, 35-45 parts of plasticizer, 3-5 parts of stabilizer, 50-100 parts of lightweight GaCO3 powder, and 10-15 parts of stainless steel wire, then extrude the mixture to form a conductive material. The stainless steel wire has a length of 5-20 mm and a diameter of 0.005-0.02 mm.

[0021] A2. The conductive material is calendered into sheets and then crushed into granules to obtain conductive particles with a particle size range of 0.5-1mm.

[0022] B1. Mix 20-30 parts of conductive carbon black and 80-100 parts of PVC granules, then extrude the mixture through an extruder to form bottom granules for later use. The particle size of the bottom granules should not exceed 2mm.

[0023] C1. Spread the bottom layer of particles onto the conveyor belt using a spreader, with a thickness requirement of 0.4-2mm.

[0024] C2. Mix conductive granules and PVC granules in a 3:20 ratio, and spread the mixture onto the bottom granule layer using a spreader to form a raw material layer with a thickness of 0.8-4mm. The total thickness of the bottom granule layer and the raw material layer should be between 1.2-4.5mm.

[0025] C3. The raw material layer is hot-pressed into flooring using a molding machine. The thickness of the flooring after hot pressing is in the range of 0.2-0.5mm.

[0026] C4. After tempering and surface stain-resistant treatment, the flooring is trimmed. The tempering process involves heating at 70℃-90℃ for 10 minutes. The surface antibacterial treatment involves cleaning the upper surface of the floor and then applying wax using a wax mop.

[0027] In step A1, stainless steel wire is first mixed with PVC powder, and then mixed together with the remaining materials.

[0028] In this embodiment, the plasticizer is DOP and the stabilizer is dibasic lead sulfate.

[0029] The advantages of using this method to produce antistatic flooring are as follows: By adding metal wires to the raw materials, conductive connections between the metal wires and the various layers of the flooring are achieved. This results in better and more stable conductivity compared to conventional antistatic flooring that uses conductive particles. The selection of the nodes, length, and diameter of the stainless steel wires is also more suitable for roll material production, reducing cracking even during and after bending in the flooring production process. Adding stainless steel wires to the granulation process improves the fusion effect between the metal wires and the molten particles, thereby improving the product quality of the antistatic flooring with metal wires. Because the surface layer of the base plate has uniformly distributed metal wires, its conductivity and uniformity are better than antistatic flooring on the market, and it retains its conductivity even after prolonged use.

[0030] Example 2

[0031] Embodiment 2 of this application discloses a mixing device for antistatic flooring raw materials containing metal wires.

[0032] refer to Figure 2 and Figure 3 The equipment for mixing raw materials for antistatic flooring containing metal wire includes a frame 1, a rolling machine 2, a cutting frame 3, and a feeding shell 4.

[0033] The coiler 2 is rotatably mounted on the frame 1, where the wire reel is placed. Rotation of the reel drives the wire to feed the wire. The coiler 2 is driven by its own motor, and the wire on it is pulled out in rows after rotation. Pairs of conveyor rollers 11 are rotatably mounted on the frame 1. The two conveyor rollers 11 are driven by a single motor, and their directions are opposite. Multiple tension rollers 12 are rotatably mounted on the frame 1, and these rollers contact the wire to tighten it.

[0034] Combination Figure 3 and Figure 4The cutting frame 3 is mounted on the frame 1, located on the side of the conveyor roller 11 away from the winding machine 2. The metal wire passes through the cutting frame 3, which is slidably connected to a cutting blade 32. The cutting blade 32 is driven to slide up and down by a telescopic cylinder mounted on the cutting frame 3. A cutting slit is provided on the cutting frame 3 directly opposite the cutting blade 32. As the cutting blade 32 passes through the cutting slit, it cuts the metal wire passing through the cutting frame 3.

[0035] The feed shell 4 is mounted on the side of the cutting frame 3 away from the coiler 2, and is used to collect the cut metal wires.

[0036] The metal wire is coiled and placed on the winding machine 2. The winding machine 2 rotates to release the wire, which then passes through the stretching roller 12 and the conveying frame roller 11 before passing through the cutting frame 3. The wire is conveyed into the cutting frame 3 by the conveying frame roller 11, and after a suitable conveying distance, it is cut into the corresponding length by the cutting blade 32. The cut wire falls into the unloading shell 4, thus realizing the cutting and unloading of the metal wire.

[0037] refer to Figure 5 and Figure 6 The feed shell 4 is rotatably connected to a receiving plate 41 on the side of the cutting frame 3 away from the coiler 2, and the cut metal wire falls onto the receiving plate 41. The feed shell 4 is equipped with a baffle 42 on the side of the feed shell 4 away from the cutting frame 3. A torsion spring is installed at the rotation axis of the receiving plate 41, causing the bottom of the receiving plate 41 to abut against the baffle 42. The upper surface of the receiving plate 41 is initially horizontal in the direction away from the cutting frame 3, then tilted downwards, and finally horizontal again. The cut metal wire will temporarily stop on the horizontal portion of the upper surface of the receiving plate 41 away from the cutting frame 3.

[0038] A drive frame 6 is mounted above the receiving plate 41 in the feed shell 4. A sliding plate 61 is slidably connected to the drive frame 6. The sliding plate 61 is driven by a drive mechanism 62 mounted on the drive frame 6 to slide up and down on the drive frame 6. The drive mechanism 62 can be an electric cylinder, hydraulic cylinder, or other similar device; in this embodiment, it is an electric cylinder. When the sliding plate 61 moves downward, it abuts against the edge of the receiving plate 41 and causes the receiving plate 41 to rotate downward, thereby discharging the metal wire on the receiving plate 41.

[0039] A positioning cylinder 611 is fixedly installed on the side wall of the sliding plate 61. A sliding rod 6121 is internally connected to the positioning cylinder 611, and the top end of the sliding rod 6121 cannot pass through the positioning cylinder 611. A pressure plate 6121 is fixedly installed at the bottom end of the sliding rod 6121. The pressure plate 6121 is directly opposite the receiving plate 41 and is located on the upper surface of the receiving plate 41 near the cutting frame 3. A stop block 43 is provided above the rotation axis of the receiving plate 41 in the unloading shell 4. The stop block 43 is located above the receiving plate 41. When the pressure plate 6121 abuts against the stop block 43, it can maintain the position of abutting against the top of the metal wire on the receiving plate 41. During the upward movement of the sliding plate 61, the positioning cylinder 611 abuts against the top of the sliding rod 6121 and drives the sliding rod 6121 to move upward.

[0040] Before the metal wire is cut at the cutting frame 3, the drive mechanism 62 moves the sliding plate 61 downward, causing the pressure plate 6121 to abut against the stop block 43, thus pressing the metal wire onto the receiving plate 41. Then, the cutting blade 32 moves downward to cut the metal wire. Because the metal wire is pressed and transported by the conveyor roller 11, it tends to tilt upward after passing the conveyor roller 11. The downward pressure of the pressure plate 6121 effectively reduces the probability of splashing when the metal wire is cut. The sliding plate 61 then continues to move downward, abutting against the receiving plate 41 and causing the receiving plate 41 to flip downward, thus discharging the metal wire from the receiving plate 41 and achieving batch unloading. The inclined design of the receiving plate 41 effectively improves the efficiency of metal wire discharge from the receiving plate 41.

[0041] refer to Figure 3 , Figure 7 and Figure 8 A screw conveyor 5 is installed inside the discharge shell 4, and the screw conveyor 5 is horizontally positioned. The feed port of the screw conveyor 5 is connected to a material box containing powder; in this embodiment, the material box actually contains PVC powder. The discharge port of the screw conveyor 5 is connected to a mixing device, which is a mixing tank in this embodiment. A discharge channel 44 is provided below the receiving plate 41 in the discharge shell 4, and the top opening of the screw conveyor 5 is connected to the discharge channel 44. The screw conveyor 5 contains a main shaftless auger 51, which is driven to rotate by the motor of the screw conveyor 5. Multiple reinforcing plates 511 are fixed between the two ends of the main shaftless auger 51. A cylindrical groove is opened in the middle of the main shaftless auger 51, and the cylindrical groove is the inner wall of the main shaftless auger 51. A secondary shaftless auger 52 is welded and fixed to the inner wall of the main shaftless auger 51, and the rotation direction of the secondary shaftless auger 52 is opposite to that of the main shaftless auger 51. The central axes of the main shaftless auger 51 and the auxiliary shaftless auger 52 are the same.

[0042] Combination Figure 9In this embodiment, the main shaftless auger 51 and the auxiliary shaftless auger 52 have the same pitch. The ratio of the outer diameter d1 of the main shaftless auger 51 to the outer diameter d2 of the auxiliary shaftless auger 52 is D (D=d1 / d2), and the range of D is not less than 2.5. In this embodiment, D=3.

[0043] The cut metal wires are fed in batches through the receiving plate 41 into the feeding channel 44, and then into the screw conveyor 5. The screw conveyor 5 continuously transports PVC powder to the mixing device via the rotation of the main shaftless auger 51. During this process, the cut metal wires fall into the PVC powder being transported by the main shaftless auger 51 and are conveyed together. The opposite rotation direction of the auxiliary shaftless auger 52 disperses the metal wires falling onto the PVC powder and lifts some of the PVC powder, allowing the metal wires and PVC powder to pre-mix within the screw conveyor 5. This reduces the probability of the metal wires being deformed and clumped by the high-speed rotating agitator when they fall into the mixing device, improving the mixing effect between the metal wires and other raw materials. The diameter of the auxiliary shaftless auger 52 should not be too large, otherwise it will reduce the conveying efficiency of the main shaftless auger 51.

[0044] The implementation principle of Embodiment 2 of this application is as follows: The metal wire is coiled on the winding machine 2 and fed out by the rotation of the winding machine 2. The conveyor roller 11 pulls the metal wire and drives it to the cutting frame 3, where the cutting frame 3 cuts the metal wire with the cutting blade 32. During the cutting process, the drive device drives the sliding plate 61 to move down, so that the pressure plate 6121 abuts against the stop block 43, thereby pressing down the metal wire. Then the cutting blade 32 cuts the metal wire, and the cut metal wire is located between the receiving platform and the pressure plate 6121. The drive device continues to drive the sliding plate 61 to move down, so that the sliding plate 61 abuts against the receiving plate 41 and drives the receiving plate 41 to rotate downward, thereby driving the cut metal wire to fall into the screw conveyor 5 through the feeding channel 44. With the rotation of the main shaftless auger 51 and the auxiliary shaftless auger 52, the wire is premixed with the PVC powder as the PVC powder moves. This method improves the mixing effect between the metal wire and the raw materials, and reduces the probability that the metal wire will clump together and fall into the mixing device, where it will be deformed and clumped by the high-speed mixing paddle.

[0045] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A manufacturing process for antistatic flooring containing metal wires, characterized in that: Includes the following steps: A1. Mix 80-100 parts of PVC powder, 35-45 parts of plasticizer, 3-5 parts of stabilizer, 50-100 parts of light GaCO3 powder, and 10-15 parts of stainless steel wire, then plasticize the mixture using an extruder to produce a conductive material. A2. Conductive material is calendered into sheets and then crushed into granules to obtain conductive particles. B1. Mix 20-30 parts of conductive carbon black and 80-100 parts of PVC granules, then extrude the mixture through an extruder to form bottom granules for later use. C1. The bottom particles are spread onto the conveyor belt by a spreader; C2. Mix conductive granules and PVC granules in a ratio of 3:20, and spread them on the bottom granule layer using a spreader to form a raw material layer. C3. The raw material layer is hot-pressed into flooring using a molding machine; C4. After tempering and surface stain-resistant treatment, trim the edges of the flooring.

2. The manufacturing process of an antistatic floor containing metal wires according to claim 1, characterized in that: The length of the stainless steel wire ranges from 5 to 20 mm, and the diameter ranges from 0.005 to 0.02 mm.

3. The manufacturing process of an antistatic floor containing metal wires according to claim 1, characterized in that: In step A2, the particle size of the conductive particles ranges from 0.5 to 1 mm.

4. The manufacturing process of an antistatic floor containing metal wires according to claim 1, characterized in that: In step B1, the particle size of the bottom layer particles does not exceed 2 mm.

5. The manufacturing process of an antistatic floor containing metal wires according to claim 1, characterized in that: In step A1, stainless steel wire is first mixed with PVC powder, and then mixed together with the remaining materials.

6. A mixing device for antistatic flooring raw materials containing metal wires, used to produce antistatic flooring containing metal wires as described in any of claims 1-5, characterized in that: include Frame (1); The coiler (2) is mounted on the frame (1) and is used to place the wire coil. Conveyor rollers (11) are rotatably mounted on the frame (1), arranged in pairs, to clamp the metal wires for conveying; The cutting frame (3) is mounted on the frame (1) and located on the side of the conveyor roller (11) away from the coiler (2). The metal wire passes through the cutting frame (3). The cutting frame (3) is slidably connected to the cutting blade (32), which is driven by a telescopic cylinder mounted on the cutting frame (3). The feed shell (4) is set up on one side of the cutting frame (3) to collect the cut metal wires; The screw conveyor (5) is connected to the top of the discharge shell (4), the feed port is connected to the hopper, and the discharge port is connected to the mixing device.

7. The mixing equipment for antistatic flooring raw materials containing metal wires according to claim 6, characterized in that: The feed shell (4) is rotatably connected to the receiving plate (41) on the side of the cutting frame (3) away from the coiler (2), and the cut metal wire will be located on the receiving plate (41). The feed shell (4) is equipped with a baffle (42), and a torsion spring is provided at the rotating shaft of the receiving plate (41) so that the bottom of the receiving plate (41) and the baffle (42) are pressed together. A drive frame (6) is mounted above the feed shell (4). A sliding plate (61) is slidably connected to the drive frame (6). The drive frame (6) is equipped with a drive mechanism (62) that drives the sliding plate (61) to slide up and down. When the sliding plate (61) moves down, it can abut against the receiving plate (41) and drive the receiving plate (41) to rotate downward.

8. The mixing equipment for antistatic flooring raw materials containing metal wires according to claim 7, characterized in that: A positioning cylinder (611) is fixedly provided on the side wall of the sliding plate (61). A sliding rod (6121) is slidably connected inside the positioning cylinder (611). The top of the sliding rod (6121) cannot pass through the positioning cylinder (611). A pressure plate (6121) is fixedly provided at the bottom of the sliding rod (6121). The pressure plate (6121) is directly opposite the receiving plate (41). The unloading shell (4) is provided with a stop (43). When the pressure plate (6121) and the stop (43) abut against each other, it can remain in a state of abutting against the top of the metal wire on the receiving plate (41). During the upward movement of the sliding plate (61), the positioning cylinder (611) abuts against the top of the sliding rod (6121) and drives the sliding rod (6121) to move upward.

9. A mixing device for antistatic flooring raw materials containing metal wires according to any one of claims 6-8, characterized in that: The screw conveyor (5) contains a main shaftless auger (51), and multiple reinforcing plates (511) are fixed between the augers at both ends of the main shaftless auger (51).

10. The mixing equipment for antistatic flooring raw materials containing metal wires according to claim 9, characterized in that: A secondary shaftless auger (52) is fixedly provided on the inner wall of the main shaftless auger (51), and the secondary shaftless auger (52) has the opposite rotation direction to the main shaftless auger (51).

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