Calender for producing wear-resistant layer of high-flatness floor

Abstract

The utility model relates to the technical field of calendaring machines, and discloses a calendaring machine for producing a high-flatness floor wear-resistant layer, which comprises a calendaring roller, a rack and a power device, a heating cavity and a heater are arranged in the calendaring roller, and the calendaring roller can heat the floor wear-resistant layer, has flowability, improves flatness and physical properties, and avoids deformation and warping. A hollow shaft is further fixed in the calendering roller and communicated with the heating cavity, and an air circulation mechanism is arranged on the outer side of the machine frame and can extract high-temperature air in the heating cavity and convey the high-temperature air into the machine frame to preheat a floor abrasion-resistant layer. And the heater comprises a plurality of heating rods which are uniformly distributed on the side wall of the calendering roller. One end of the calender roller is provided with a conductive slip ring which can ensure stable work of the heating rod. The air circulation mechanism comprises an air pump, a first multi-way pipe, a second multi-way pipe and a rotary valve and can drive hot air to circulate, so that the interior of the rack is kept at a stable preheating temperature. An air outlet plate is arranged on the inner side of the feeding hole, so that the temperature loss can be further reduced.

Description

Technical Field

[0001] This utility model relates to the field of calendering technology, specifically a calendering machine for producing high flatness floor wear-resistant layers. Background Art

[0002] A flatter floor surface provides a more uniform contact area, reducing localized wear and pressure concentration, thus helping to extend the lifespan of the wear layer. Furthermore, a flatter floor surface results in more even friction when objects move on it, reducing excessive wear on specific areas of the wear layer. Additionally, a flatter floor reduces the accumulation of dust and debris, lowering the risk of wear and scratches on the wear layer.

[0003] Temperature control plays a crucial role in the calendering process of flooring film. Appropriate temperature allows the flooring film material to have good fluidity, making it easier to distribute evenly between the rollers of the calender, thus improving flatness. Furthermore, temperature can affect the molecular structure of the flooring film material, causing appropriate deformation and recombination during calendering, which helps improve the physical properties and surface flatness of the flooring film. Temperature also helps eliminate stress generated during processing, reducing the accumulation of internal stress, which helps prevent deformation or warping during subsequent use, thus improving flatness. For the calendering of multi-layer flooring films, temperature control ensures good adhesion between layers, avoiding delamination or bubbling, thereby improving flatness and overall quality.

[0004] According to CN210940132U, "A calender for processing floor film", the calender includes: a calender body and a floor film adjustment mechanism. By adopting the floor film adjustment mechanism, the purpose of correcting the angle deviation of the floor film can be achieved by adjusting the position of the adjusting roller.

[0005] However, the aforementioned calender does not provide a good temperature control environment for the calendering of the floor film, resulting in the following: the temperature of the floor film will drop during processing and transportation. The excessively low temperature makes the floor film material too stiff, and the stress generated during the calendering process is difficult to distribute evenly and adhere. At the same time, the low temperature leads to poor fluidity, resulting in poor flatness after calendering, and even cracks or breaks.

[0006] Therefore, we propose a calendering machine for producing high-flatness floor wear-resistant laminates to address the problems mentioned above. Utility Model Content

[0007] The purpose of this invention is to provide a calendering machine for producing high-flatness floor wear-resistant layers, in order to solve the problem that existing calendering machines do not provide a good temperature control environment for calendering the floor film, which affects the flatness of the floor wear-resistant layer calendering process.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0009] A calendering machine for producing high-flatness floor wear-resistant layers includes paired calendering rolls, a frame supporting the rotation of the calendering rolls, and a power device for driving the calendering rolls to rotate. The frame has an inlet and an outlet on each side, both aligned with the calendering rolls. A heating cavity is provided inside each calendering roll, and a heater is embedded in the side wall of each calendering roll. A temperature sensor is installed on each calendering roll. Hollow shafts are fixedly connected to both ends of each calendering roll, and these hollow shafts communicate with the interior of the heating cavity. An air circulation mechanism is fixedly connected to the outside of the frame.

[0010] As a further embodiment of this invention: the heater consists of multiple heating rods, which are arranged in a circumferential array on the side wall of the calendering roll.

[0011] As a further embodiment of this utility model: a conductive slip ring is installed at one end of the calendering roller, and the heating rod is electrically connected to the conductive slip ring.

[0012] As a further embodiment of this utility model: the air circulation mechanism includes a wind pump, a first multi-port pipe connected to one end of the hollow shaft, and a second multi-port pipe connected to the other end of the hollow shaft. Rotary valves are installed between the first multi-port pipe and the hollow shaft. The wind pump is fixedly connected to the side of the frame. The air outlet of the first multi-port pipe is fixedly connected to the air inlet of the wind pump. The air outlet of the wind pump is connected to the inside of the frame. The second multi-port pipe is fixedly connected to the inside of the frame.

[0013] As a further embodiment of this utility model: an air outlet plate is provided on the inner side of the feed inlet, and the air outlet end of the air pump is connected to the interior of the air outlet plate.

[0014] As a further embodiment of this utility model: the power device includes a motor, a driving gear fixedly connected to the motor drive shaft, a first driven gear, and a second driven gear. The motor is fixedly connected to the frame. The hollow shafts of two paired calendering rollers are fixedly connected to the first driven gear and the second driven gear, respectively. The first gear and the second gear mesh with each other.

[0015] As a further embodiment of this utility model: both ends of the calendering roll are slidably connected to annular cutters, and a connecting sleeve is fixedly connected to the side of the annular cutter near the frame. An electric telescopic rod is installed between the end of the connecting sleeve near the frame and the end of the calendering roll.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0017] First, this invention uses a heater to heat the calendering rolls, ensuring uniform and rapid temperature rise. A temperature sensor measures the temperature of the calendering rolls to ensure they reach the appropriate temperature. An air circulation mechanism extracts high-temperature gas from the heating cavity via a hollow shaft and delivers it to the inside of the frame, raising the temperature inside the frame. This preheats the flooring wear-resistant layer before it enters the frame and between the calendering rolls. The flooring wear-resistant layer passes between two calendering rolls, where it is calendered by the paired calendering rolls. The heated calendering rolls contact the flooring wear-resistant layer, further heating it and making the material more fluid, allowing it to distribute more evenly between the rolls of the calender, thus improving flatness.

[0018] Secondly, the two ends of the calendering roller of this utility model are slidably connected with annular cutters. The annular cutters rotate synchronously with the calendering roller to cut off the side edges of the calendered floor wear-resistant layer, thereby removing the uneven side edges of the floor wear-resistant layer and ensuring the overall flatness and quality of the floor wear-resistant layer. Attached Figure Description

[0019] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the first multi-port pipe installation structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the second multi-port pipe installation structure of this utility model.

[0022] The components are: 1. Calendering roll; 2. Frame; 4. Feed inlet; 5. Discharge outlet; 6. Heating cavity; 7. Heater; 9. Hollow shaft; 11. Conductive slip ring; 12. Air pump; 13. First multi-port pipe; 14. Second multi-port pipe; 15. Rotary valve; 16. Air outlet plate; 17. Motor; 18. Drive gear; 19. First driven gear; 20. Second driven gear; 21. Annular cutter; 22. Connecting sleeve; 23. Electric telescopic rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1:

[0025] Please see Figure 1-3 , the utility model provides a technical solution:

[0026] A calendering machine for producing high-flatness floor wear-resistant layers includes paired calendering rollers 1, a frame 2 supporting the rotation of the calendering rollers 1, and a power unit driving the calendering rollers 1 to rotate. The frame 2 has an inlet 4 and an outlet 5 on each side, both aligned with the calendering rollers 1. The floor wear-resistant layer to be calendered enters through the inlet 4. The power unit drives the calendering rollers 1 to rotate, and the floor wear-resistant layer passes between the two calendering rollers 1. The floor wear-resistant layer is calendered by the paired calendering rollers 1 and then output through the outlet 5.

[0027] The calender roll 1 has a heating cavity 6 inside, and a heater 7 is embedded in the side wall of the calender roll 1. The calender roll 1 is heated by the heater 7, and the temperature sensor measures the temperature of the calender roll 1 to ensure that the calender roll 1 is heated to an appropriate temperature. The heated calender roll 1 comes into contact with the floor wear layer, causing it to heat up. This makes the floor wear layer material more fluid, making it easier to distribute evenly between the rolls of the calender, thereby helping to improve flatness. Furthermore, the increased temperature affects the molecular structure of the floor wear layer material, causing it to undergo appropriate deformation and reorganization during the calendering process. This helps to improve its physical properties and surface flatness, and helps to eliminate the stress generated in the floor wear layer material during processing, reducing the accumulation of internal stress. This helps to prevent the floor film from deforming or warping in subsequent use, thereby improving flatness. For the calendering of multi-layer floor films, an appropriate calendering temperature can ensure good adhesion between the layers, avoiding delamination or bubbling, thereby improving flatness and overall quality.

[0028] Furthermore, hollow shafts 9 are fixedly connected to both ends of the calendering roll 1. The hollow shafts 9 are connected to the interior of the heating cavity 6. An air circulation mechanism is fixedly connected to the outside of the frame 2. The air circulation mechanism draws high-temperature gas from the heating cavity 6 through the hollow shafts 9 and delivers it to the interior of the frame 2, thereby raising the temperature inside the frame 2. This allows the floor wear-resistant layer to be preheated during the stage between entering the frame 2 and entering the calendering roll 1. Through the above-mentioned air heating and segmented heating methods, the floor wear-resistant layer can be heated evenly, making the wear-resistant layer material softer and more malleable, thereby improving flatness and overall quality.

[0029] Preferably, the heater 7 consists of multiple heating rods, which are arranged in a circumferential array on the side wall of the calender roll 1 to ensure that the calender roll 1 heats up uniformly and quickly.

[0030] Preferably, a conductive slip ring 11 is installed at one end of the calender roll 1, and the heating rod is electrically connected to the conductive slip ring 11. The conductive slip ring 11 can energize the inside of the rotating calender roll 1 to ensure the stable operation of the heating rod.

[0031] Furthermore, the air circulation mechanism includes a fan 12, a first multi-port pipe 13 connected to one end of the hollow shaft 9, and a second multi-port pipe 14 connected to the other end of the hollow shaft 9. Rotary valves 15 are installed between the first multi-port pipe 13 and the second multi-port pipe 14 and the hollow shaft 9. The fan 12 is fixedly connected to the side of the frame 2. The air outlet of the first multi-port pipe 13 is fixedly connected to the air inlet of the fan 12, and the air outlet of the fan 12 is connected to the interior of the frame 2. The second multi-port pipe 14 is fixedly connected to the interior of the frame 2. The rotary valves 15 allow air to circulate through the first multi-port pipe 13 and the second multi-port pipe 14. The spindles 9 are rotatably connected, ensuring normal airflow between the first multi-pass pipe 13, the second multi-pass pipe 14 and the heating cavity 6 when the calendering roller 1 rotates. The air pump 12 draws hot air from inside the heating cavity 6 through the first multi-pass pipe 13 to heat the frame 2. The second multi-pass pipe 14 is internally connected to the side of the frame 2 away from the air pump 12. The second multi-pass pipe 14 draws air from inside the frame 2 and then enters the heating cavity 6 for heating, thereby driving the circulation of hot air and maintaining a relatively stable preheating temperature inside the frame 2. Because it does not circulate with the outside, the energy consumption of the heater 7 is reduced.

[0032] Furthermore, an air outlet plate 16 is provided inside the feed inlet 4. The air outlet of the air pump 12 is connected to the inside of the air outlet plate 16, so that the hot air inside the heating cavity 6 enters the air outlet plate 16 and is evenly blown onto the floor wear-resistant layer material at the feed inlet 4, further reducing the temperature loss and making the preheating temperature closer to that of the calendering roll 1, thus improving the preheating effect.

[0033] Preferably, the power unit includes a motor 17, a drive gear 18 fixedly connected to the drive shaft of the motor 17, a first driven gear 19, and a second driven gear 20. The motor 17 is fixedly connected to the frame 2. The hollow shafts 9 of the two paired calendering rollers 1 are fixedly connected to the first driven gear 19 and the second driven gear 20, respectively. The first gear and the second gear mesh with each other. The motor 17 drives the drive gear 18 to rotate, the drive gear 18 drives the first gear to rotate, and the first gear drives the second gear to rotate, thereby causing the first gear and the second gear to drive the two paired calendering rollers 1 to rotate synchronously, and to calender the wear-resistant layer of the floor.

[0034] Example 2:

[0035] Please see Figure 1-3Furthermore, in conjunction with Embodiment 1, it is further found that annular cutters 21 are slidably connected to both ends of the calender roll 1. A connecting sleeve 22 is fixedly connected to the side of the annular cutter 21 near the frame 2. An electric telescopic rod 23 is installed between the end of the connecting sleeve 22 near the frame 2 and the end of the calender roll 1. The connecting sleeve 22 is cylindrical and slidably sleeved on the outside of the calender roll 1 and its hollow shaft 9. The connecting sleeve 22 is pushed to slide by the electric telescopic rod 23 at the end of the calender roll 1, so that the connecting sleeve 22 drives the annular cutter. 21. Slide and adjust the position of the annular cutter 21 on the calendering roller 1. The electric telescopic rod 23 rotates synchronously with the calendering roller 1. Through the connection of the electric telescopic rod 23, the connecting sleeve 22 and the annular cutter 21 also rotate synchronously with the calendering roller 1. The annular cutters 21 on the two paired calendering rollers 1 are in the same position. By rotating synchronously with the calendering roller 1, the side edge of the calendered floor wear layer is cut off, and the uneven side edge of the floor wear layer is cut off to ensure the overall flatness and quality of the floor wear layer.

[0036] The working principle of this utility model:

[0037] Start the motor 17, which drives the drive gear 18 to rotate. The drive gear 18 drives the first gear to rotate, and the first gear drives the second gear to rotate, thereby causing the first gear and the second gear to drive the two paired calendering rollers 1 to rotate synchronously.

[0038] The floor wear-resistant layer is fed into the calender through the feed port 4. The floor wear-resistant layer passes between two calendering rollers 1. The floor wear-resistant layer is calendered by the paired calendering rollers 1. The calendering rollers 1 are heated by the heater 7. The temperature sensor measures the temperature of the calendering rollers 1 to heat them to an appropriate temperature. The heated calendering rollers 1 come into contact with the floor wear-resistant layer, causing it to heat up. This makes the floor wear-resistant layer contact-heated and fluid, which is convenient for uniform distribution and improves flatness.

[0039] The air pump 12 of the air circulation mechanism is connected to the hollow shaft 9 through a multi-port pipe and a rotary valve 15. It draws hot air to heat up the frame 2 and drives the hot air circulation, so that the inside of the frame 2 maintains a stable preheating temperature and reduces energy consumption. The annular cutter 21 at both ends of the calendering roller 1 can be adjusted in position by an electric telescopic rod 23 and rotates synchronously with the calendering roller 1 to cut off the side edge of the wear-resistant layer of the floor after calendering, ensuring overall flatness and quality.

[0040] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these specific embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A calendering machine for producing high-flatness floor wear-resistant layers, comprising a pair of calendering rolls (1), a frame (2) for rotating support of the calendering rolls (1), and a power device for driving the calendering rolls (1) to rotate, wherein the frame (2) is provided with an inlet (4) and an outlet (5) on both sides, and the inlet (4) and outlet (5) are aligned with the calendering rolls (1), characterized in that: The calender roll (1) has a heating cavity (6) inside, a heater (7) is embedded in the side wall of the calender roll (1), a temperature sensor is installed on the calender roll (1), a hollow shaft (9) is fixedly connected to both ends of the calender roll (1), the hollow shaft (9) is connected to the interior of the heating cavity (6), and an air circulation mechanism is fixedly connected to the outside of the frame (2).

2. The calendering machine for producing high-flatness flooring wear-resistant laminates according to claim 1, characterized in that: The heater (7) consists of multiple heating rods, which are arranged in a circumferential array on the side wall of the calender roll (1).

3. A calendering machine for producing high-flatness flooring wear-resistant laminates according to claim 2, characterized in that: A conductive slip ring (11) is installed at one end of the calendering roll (1), and the heating rod is electrically connected to the conductive slip ring (11).

4. A calendering machine for producing high-flatness flooring wear-resistant laminates according to claim 1, characterized in that: The air circulation mechanism includes a blower (12), a first multi-port pipe (13) connected to one end of a hollow shaft (9), and a second multi-port pipe (14) connected to the other end of a hollow shaft (9). A rotary valve (15) is installed between the first multi-port pipe (13) and the second multi-port pipe (14) and the hollow shaft (9). The blower (12) is fixedly connected to the side of the frame (2). The air outlet of the first multi-port pipe (13) is fixedly connected to the air inlet of the blower (12). The air outlet of the blower (12) is connected to the inside of the frame (2). The second multi-port pipe (14) is fixedly connected to the inside of the frame (2).

5. A calendering machine for producing high-flatness flooring wear-resistant laminates according to claim 4, characterized in that: An air outlet plate (16) is provided inside the feed inlet (4), and the air outlet end of the air pump (12) is connected to the inside of the air outlet plate (16).

6. A calendering machine for producing high-flatness flooring wear-resistant laminates according to claim 5, characterized in that: The power unit includes a motor (17), a drive gear (18) fixedly connected to the drive shaft of the motor (17), a first driven gear (19), and a second driven gear (20). The motor (17) is fixedly connected to the frame (2). The hollow shafts (9) of the two calendering rollers (1) arranged in pairs are fixedly connected to the first driven gear (19) and the second driven gear (20) respectively. The first gear and the second gear mesh.

7. A calendering machine for producing high-flatness flooring wear-resistant laminates according to claim 1, characterized in that: The two ends of the calender roll (1) are slidably connected to annular cutters (21), and a connecting sleeve (22) is fixedly connected to the side of the annular cutter (21) near the frame (2). An electric telescopic rod (23) is installed between the end of the connecting sleeve (22) near the frame (2) and the end of the calender roll (1).

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