Three-roller type calender for foamed sheet production

Abstract

The utility model discloses a foam board production three-roller type calender which comprises a base, the top of the base is fixedly connected with a box body, the upper portion of the inner wall of the box body is rotationally connected with an upper pressing roller through a bearing, a foam board body is attached to the bottom of the upper pressing roller, and a lower pressing roller is attached to the lower portion of the foam board body. And a leveling mechanism is arranged above the base. The utility model relates to the technical field of foam board production and processing, realizes that an upper pressurizing disc and a lower pressurizing disc extrude and straighten a foam board body, so that the surface is smooth and flat, and solves the problem that when an existing calender is used for calendering, the bright surface layer of the foam board has larger concave-convex parts, so that the surface is not smooth. Generally, the contact surface of a hot pressing roller and a pressurizing roller on the foam board is small, so that the bright surface layer of the foam board is not flat and smooth enough, and the product quality is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of foam plate production and processing, in particular to a three-roller calender for foam plate production. Background Art

[0002] The calender is a device used to improve the glossiness of paper surface. It is a kind of calendering and glazing process. After the printed surface is coated, the glazing layer is dried. If the smoothness and glossiness of the glazing layer need to be further improved, it can be calendered by the calender.

[0003] The working mode of the calender is usually continuous rolling. The printed matter is transported from the paper feed table to the calendering belt between the hot pressing roller and the pressure roller. Under the action of temperature and pressure, the coating adheres to the surface of the calendering belt and is calendered. After calendering, the coating layer gradually cools down to form a bright surface layer.

[0004] However, when the existing calender is calendering, there are large bumps on the shiny surface layer of the foamed board. The contact area of ​​the commonly used hot pressing roller and pressure roller on the foamed board is small, resulting in the shiny surface layer of the foamed board being not smooth enough, thereby reducing product quality. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a three-roller calender for the production of foamed boards, which solves the problem that when the existing calender is calendering, there are large bumps on the bright surface layer of the foamed board. The commonly used hot pressing rollers and pressure rollers have a small contact area with the foamed board, resulting in the bright surface layer of the foamed board being not smooth enough, thereby reducing product quality.

[0006] To achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: a three-roll calender for producing foamed boards, comprising a base, the top of the base is fixedly connected to a box body, an upper pressure roller is rotatably connected to the upper inner wall of the box body through a bearing, the bottom of the upper pressure roller is in contact with the foamed board body, and a lower pressure roller is in contact with the lower part of the foamed board body, a leveling mechanism is arranged above the base, and the leveling mechanism includes an upper pressure plate, a lower pressure plate, a fixed plate, a shell, a first bevel gear, a second bevel gear, a threaded rod, a threaded cylinder, a rotating rod and a limit rod, the upper pressure plate is fixedly connected to the inner wall of the box body, and a fixed plate is arranged below the upper pressure plate. The fixing plate is fixedly connected to the inner wall of the box body, and the bottom of the fixing plate is fixedly connected to the shell, and a first bevel gear is provided inside the shell, and the outer side of the first bevel gear is fixedly connected to the rotating rod, and the rotating rod passes through the shell and the box body through bearings in sequence and extends to the outside thereof, and the top of the first bevel gear is meshed with the second bevel gear, and the inner wall of the second bevel gear is fixedly connected to the threaded cylinder, and the threaded cylinder is rotatably connected to the inner wall of the fixing plate through a bearing, and the inner wall of the threaded cylinder is threadedly connected to a threaded rod, and the top of the threaded rod is fixedly connected to a lower pressure plate, and a limiting rod is installed between the lower pressure plate and the fixing plate.

[0007] Preferably, a driving roller is installed on one side of the outer wall of the box body, and a roller is fixedly connected to the side of the outer wall of the box body away from the driving roller.

[0008] Preferably, a water tank is fixedly connected to the top of the base, and the side of the water tank close to the box body is connected to the box body through a connecting pipe. The top of the water tank is connected to a water pump, and the output end of the water pump is connected to a branch pipe. The branch pipe passes through the outer wall of the box body and extends to the interior thereof. One end of the branch pipe located inside the box body is fixedly connected to a nozzle.

[0009] Preferably, a filter is fixedly connected to the lower portion of the inner wall of the box.

[0010] Preferably, a stand is provided on the side of the box body away from the water tank, the stand is fixedly connected to the top of the base, and two scrapers are fixedly connected to the front of the stand by bolts, and the two scrapers are respectively attached to the top and bottom of the foam board body.

[0011] Preferably, a dust removal box is provided on the top of the stand, one side of the dust removal box is connected to a dust removal pipe, the end of the dust removal pipe is connected to a fan, the end of the dust removal box away from the fan is connected to a dust suction pipe, and a dust removal head is installed at the other end of the dust suction pipe.

[0012] Beneficial effects

[0013] The utility model provides a three-roller calender for producing foamed boards. It has the following beneficial effects: the three-roller calender for producing foamed boards, through the cooperation among an upper pressure plate, a lower pressure plate, a fixed plate, a housing, a first bevel gear, a second bevel gear, a threaded rod, a threaded cylinder, a rotating rod, and a limit rod, realizes that the upper pressure plate and the lower pressure plate extrude and straighten the foamed board body, making the surface smooth and flat. This solves the problem that when calendering with existing calenders, the shiny surface layer of the foamed board has large uneven areas due to the small contact area between the hot pressing roller and the pressure roller with the foamed board, resulting in the shiny surface layer of the foamed board being not smooth and flat, thereby reducing product quality.

[0014] Through the coordination among the stand, scraper, dust removal box, dust removal pipe, dust suction pipe, dust removal head and fan, it is realized that when the foam board passes, the two sets of scrapers on the stand scrape off the dust and other impurities on the surface of the foam board. At the same time, under the suction of the fan, in conjunction with the dust removal pipe, dust suction pipe and dust removal head, the waste impurities on the surface of the foam board are collected into the dust removal box, so that the foam board is cleaned and the product quality itself is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the appearance of the utility model;

[0017] Figure 3 for Figure 1 A schematic diagram of the structure of the middle housing, the first bevel gear and the rotating rod;

[0018] Figure 4 for Figure 1 Schematic diagram of the structure of the upper middle pressure plate, foam plate body and lower pressure plate;

[0019] Figure 5 for Figure 1 Schematic diagram of the structure of the neutral frame, dust removal box and fan.

[0020] In the figure: 1. base, 2. box body, 3. upper pressure roller, 4. foam board body, 5. lower pressure roller, 6. drive roller, 7. upper pressure plate, 8. lower pressure plate, 9. fixed plate, 10. shell, 11. first bevel gear, 12. second bevel gear, 13. threaded rod, 14. threaded cylinder, 15. rotating rod, 16. roller, 17. water tank, 18. connecting pipe, 19. water pump, 20. branch pipe, 21. nozzle, 22. filter, 23. stand, 24. scraper, 25. dust removal box, 26. dust removal pipe, 27. fan, 28. dust suction pipe, 29. dust removal head, 30. limit rod. DETAILED DESCRIPTION

[0021] 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.

[0022] When the existing calender is calendering, there are large bumps on the shiny surface layer of the foamed board. The contact area of ​​the hot pressing roller and the pressure roller commonly used on the foamed board is small, resulting in the shiny surface layer of the foamed board being not smooth enough, which reduces the product quality.

[0023] In view of this, the utility model provides a three-roller calender for the production of foamed boards, which cooperates with the upper pressure plate, the lower pressure plate, the fixed plate, the shell, the first bevel gear, the second bevel gear, the threaded rod, the threaded barrel, the rotating rod and the limit rod, so that the rotating rod rotates, and finally drives the threaded rod to move upward in the threaded barrel, so that the lower pressure plate moves close to the foamed board body, and the upper and lower pressure plates extrude and straighten the foamed board body, making the surface smooth and flat, which solves the problem that when the existing calender is calendered, there are large bumps on the bright surface layer of the foamed board, and the contact area of ​​the commonly used hot pressing roller and pressure roller with the foamed board is small, resulting in the bright surface layer of the foamed board not being flat and smooth, thereby reducing product quality.

[0024] Through the use of wires by those skilled in the art, all electrical components in this case are connected to their corresponding power supplies, and appropriate controllers and encoders should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, in which the electrical components are electrically connected in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0025] Example 1: By Figure 1-5It can be seen that a three-roll calender for producing foamed boards includes a base 1, a box body 2 is fixedly connected to the top of the base 1, a box door is installed on the front of the box body 2 through a pin shaft, and a glass window can be installed on the box door to observe the situation inside the calender, an upper pressing roller 3 is rotatably connected to the upper inner wall of the box body 2 through a bearing, the bottom of the upper pressing roller 3 is attached to the foamed board body 4, and the lower part of the foamed board body 4 is attached to the lower part of the upper pressing roller 3. The upper pressing roller 3 and the lower pressing roller 5 are not limited and can be hot pressing rollers or pressure rollers. The bottom of the lower pressing roller 5 can be provided with The waterproof telescopic rod has a mounting frame fixedly connected to the top of the telescopic rod. The lower pressure roller 5 is rotatably connected to the inner wall of the fixed frame through a bearing. In this way, the lower pressure roller 5 can be extended and shortened. At the same time, with the cooperation of the upper pressure roller 3, the calendering operation of the foam board body 4 is realized. A leveling mechanism is provided above the base 1. The leveling mechanism includes an upper pressure plate 7, a lower pressure plate 8, a fixed plate 9, a shell 10, a first bevel gear 11, a second bevel gear 12, a threaded rod 13, a threaded cylinder 14, a rotating rod 15 and a limit rod 30. The upper pressure plate 7 is fixedly connected to the inner wall of the box body 2, and a fixing plate 9 is provided below the upper pressure plate 7. The fixing plate 9 is fixedly connected to the inner wall of the box body 2. The bottom of the fixing plate 9 is fixedly connected to a shell 10. A first bevel gear 11 is provided inside the shell 10. The outer side of the first bevel gear 11 is fixedly connected to a rotating rod 15. The rotating rod 15 passes through the shell 10 and the box body 2 in turn through the bearing and extends to the outside thereof. A hand wheel can be installed at one end of the rotating rod 15 outside the box body 2. The first bevel gear 11 is fixed to the outer side of the first bevel gear 11. The top of the wheel 11 is meshedly connected with the second bevel gear 12, and the inner wall of the second bevel gear 12 is fixedly connected with a threaded cylinder 14. The threaded cylinder 14 is rotatably connected to the inner wall of the fixed plate 9 through a bearing. The inner wall of the threaded cylinder 14 is threadedly connected with a threaded rod 13. The inner wall thread of the threaded cylinder 14 matches the outer wall thread of the threaded rod 13. The top of the threaded rod 13 is fixedly connected with the lower pressure plate 8. A limiting rod 30 is installed between the lower pressure plate 8 and the fixed plate 9. The limiting rod 30 serves to limit the rotation of the lower pressure plate 8.

[0026] During the specific implementation process, it is worth noting that the staff rotates the rotating rod 15, and the rotation of the rotating rod 15 drives the first bevel gear 11 to rotate, and at the same time drives the second bevel gear 12 meshed with the bottom of the first bevel gear 11 to rotate, thereby driving the threaded rod 13 to rotate in the threaded cylinder 14. Since the threads of the threaded rod 13 match the threaded cylinder 14, the threaded rod 13 can move up and down along the threaded cylinder 14, and at the same time is limited by the limiting rod 30, so that the lower pressure plate 8 can squeeze and flatten the foam board body 4;

[0027] Furthermore, a driving roller 6 is installed on one side of the outer wall of the box body 2. The model of the driving roller 6 is not limited. A roller 16 is fixedly connected to the side of the outer wall of the box body 2 away from the driving roller 6.

[0028] In the specific implementation process, it is worth noting that when the foam board body 4 passes through the driving roller 6, the driving roller 6 rotates, so that the foam board body 4 passes through the box body 2, and at the same time, the cooperation of the roller 16 makes it easier to move the foam board body 4;

[0029] Furthermore, a water tank 17 is fixedly connected to the top of the base 1. The side of the water tank 17 close to the box body 2 is connected to the box body 2 through a connecting pipe 18. The top of the water tank 17 is connected to a water pump 19. The model of the water pump 19 is not limited. The output end of the water pump 19 is connected to a branch pipe 20. The branch pipe 20 passes through the outer wall of the box body 2 and extends into the interior thereof. One end of the branch pipe 20 located inside the box body 2 is fixedly connected to a nozzle 21.

[0030] During the specific implementation process, it is worth noting that the water pump 19 is started to transport the water in the water tank 17 to the nozzle 21 through the branch pipe 20. The nozzle 21 sprays water mist to cool the foam board body 4, thereby improving the quality of the bright surface layer of the foam board body 4. Then, the water mist is affected by gravity and reaches the bottom of the box body 2 and enters the water tank through the connecting pipe 18. For greater convenience, a pressure pump and a valve can be added between the connecting pipe 18 and the box body 2, so that water can be extracted from the bottom of the box body 2 and prevented from flowing back into the box body 2. In this way, water resources can be recycled and reused, reflecting the concept of green environmental protection.

[0031] Furthermore, a filter screen 22 is fixedly connected to the lower inner wall of the box body 2;

[0032] In the specific implementation process, it is worth noting that the material of the filter 22 can be a fiber filter with strong filtering performance and light weight to filter impurities and prevent impurities from entering the water pump 19 and affecting its normal operation;

[0033] Specifically, when using the three-roll calender to produce foamed boards, the staff first applies a calender coating to the foamed board body 4, and then puts it into the box body 2 from the driving roller 6. The driving roller 6 moves, and the foamed board body 4 enters through friction. At this time, the staff rotates the rotating rod 15. The rotation of the rotating rod 15 drives the first bevel gear 11 to rotate, and at the same time drives the second bevel gear 12 meshed with the bottom of the first bevel gear 11 to rotate, thereby driving the threaded rod 13 to rotate in the threaded barrel 14. Because the threads of the threaded rod 13 match the threaded barrel 14, Therefore, the threaded rod 13 can be moved up and down along the threaded cylinder 14, so that the lower pressure plate 8 and the upper pressure plate 7 squeeze and flatten the foam board body 4, and then the upper pressure roller 3 and the lower pressure roller 5 further squeeze the foam board body 4, so that the coating adheres to the foam board body 4, so that the surface is calendered. At this time, the driving roller 6 stops and the water pump 19 is started, so that the water pump 19 draws water from the water tank 17, and then transports it to the nozzle 21 through the branch pipe 20, so that the calendered coating layer forms a bright surface layer after the water mist sprayed from the nozzle 21 gradually cools down.

[0034] Example 2: By Figure 1 、 2 As shown in Figures 5 and 6, a stand 23 is provided on the side of the box body 2 away from the water tank 17. The stand 23 is fixedly connected to the top of the base 1. Two scrapers 24 are fixedly connected to the front of the stand 23 by bolts. The two scrapers 24 are respectively attached to the top and bottom of the foam board body 4.

[0035] During the specific implementation process, it is worth noting that the purpose of such design is to scrape off dust and impurities on the foam board body 4 so that the operator can apply the coating on the foam board body 4. The two scrapers 24 on the stand 23 can be adjusted in angle so that the upper and lower scrapers 24 can adapt to foam boards of different thicknesses and sizes, thereby just scraping off impurities on the surface of the foam board body 4 without damaging the foam board body 4 itself.

[0036] Furthermore, a dust removal box 25 is provided on the top of the stand 23. One side of the dust removal box 25 is connected to a dust removal pipe 26. The end of the dust removal pipe 26 is connected to a fan 27. The model of the fan 27 is not limited and can absorb dust and other impurities. The end of the dust removal box 25 away from the fan 27 is connected to a dust suction pipe 28, and the other end of the dust suction pipe 28 is installed with a dust removal head 29.

[0037] During the specific implementation process, it is worth noting that the two scrapers 24 scrape off the dust and impurities on the surface of the foam board body 4. After working for a long time, the dust and impurities on the surface of the lower scraper 24 will fall off naturally due to gravity, but the debris will accumulate on the surface of the upper scraper 24. At this time, the fan 27 inhales air, generates suction in the dust removal head 29, and sucks the impurities and debris into the dust suction pipe 28 and then enters the dust removal box 25. Similarly, a filter screen similar to the filter screen 22 can be installed in the dust removal box 25. After the air is filtered by the filter screen inside the dust removal box 25, it is discharged through the dust removal pipe 26 and the fan 27 to prevent the fan 27 from being blocked. In this way, the scraper 24 is kept clean and tidy, and the subsequent scraping work of the scraper 24 is avoided from being affected.

[0038] Specifically, based on the above-mentioned embodiment 1, the fan 27 is started, and the fan 27 absorbs the dust, impurities and waste scraped off by the upper scraper 24 through the dust removal head 29, and then transports them to the dust removal box 25 through the dust suction pipe 28. The filter screen in the dust removal box 25 filters them to prevent waste impurities from entering through the dust removal pipe 26 and damaging the fan 27.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0040] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0041] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-roll calender for producing foamed boards, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a box body (2), an upper pressing roller (3) is rotatably connected to the upper inner wall of the box body (2) via a bearing, the bottom of the upper pressing roller (3) is attached to a foaming board body (4), and a lower pressing roller (5) is attached to the lower side of the foaming board body (4), and a leveling mechanism is provided above the base (1); The leveling mechanism comprises an upper pressure plate (7), a lower pressure plate (8), a fixing plate (9), a housing (10), a first bevel gear (11), a second bevel gear (12), a threaded rod (13), a threaded barrel (14), a rotating rod (15) and a limiting rod (30); The upper pressure plate (7) is fixedly connected to the inner wall of the box body (2), a fixing plate (9) is provided below the upper pressure plate (7), the fixing plate (9) is fixedly connected to the inner wall of the box body (2), the bottom of the fixing plate (9) is fixedly connected to a shell (10), a first bevel gear (11) is provided inside the shell (10), the outer side of the first bevel gear (11) is fixedly connected to a rotating rod (15), and the rotating rod (15) passes through the shell (10) and the box body (2) in sequence through a bearing. 2) and extends to the outside thereof, the top of the first bevel gear (11) is meshedly connected with the second bevel gear (12), the inner wall of the second bevel gear (12) is fixedly connected with a threaded cylinder (14), the threaded cylinder (14) is rotatably connected to the inner wall of the fixed plate (9) through a bearing, the inner wall of the threaded cylinder (14) is threadedly connected with a threaded rod (13), the top of the threaded rod (13) is fixedly connected with a lower pressure plate (8), and a limiting rod (30) is installed between the lower pressure plate (8) and the fixed plate (9).

2. The three-roll calender for producing foamed board according to claim 1, characterized in that: A driving roller (6) is installed on one side of the outer wall of the box body (2), and a roller (16) is fixedly connected to the side of the outer wall of the box body (2) away from the driving roller (6).

3. The three-roll calender for producing foamed board according to claim 1, characterized in that: A water tank (17) is fixedly connected to the top of the base (1); a side of the water tank (17) close to the box body (2) is connected to the box body (2) through a connecting pipe (18); the top of the water tank (17) is connected to a water pump (19); the output end of the water pump (19) is connected to a branch pipe (20); the branch pipe (20) passes through the outer wall of the box body (2) and extends into the interior thereof; one end of the branch pipe (20) located inside the box body (2) is fixedly connected to a nozzle (21).

4. The three-roll calender for producing foamed board according to claim 1, characterized in that: A filter screen (22) is fixedly connected to the lower portion of the inner wall of the box body (2).

5. The three-roll calender for producing foamed board according to claim 3, characterized in that: A stand (23) is provided on a side of the box body (2) away from the water tank (17), and the stand (23) is fixedly connected to the top of the base (1). Two scrapers (24) are fixedly connected to the front of the stand (23) by bolts, and the two scrapers (24) are respectively attached to the top and bottom of the foam board body (4).

6. The three-roll calender for producing foamed board according to claim 5, characterized in that: A dust removal box (25) is provided on the top of the stand (23), one side of the dust removal box (25) is connected to a dust removal pipe (26), the end of the dust removal pipe (26) is connected to a fan (27), the end of the dust removal box (25) away from the fan (27) is connected to a dust suction pipe (28), and the other end of the dust suction pipe (28) is installed with a dust removal head (29).

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