Roller press
By setting at least two sets of stress relief devices in the brick roll forming equipment, the limiting plate and the driving device work together to gradually release the stress in the brick blank, solving the brick blank crack problem and improving the rolling speed and output.
Patent Information
- Application Number
- CN202421537116.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-07-01
AI Technical Summary
In existing brick roll forming equipment, the length of the stress release interval provided by a single stress release device is limited, resulting in the stress release in the brick too fast and cracks are prone to occur, which affects the roll forming speed and yield.
At least two sets of stress relief devices are adopted, each group includes a limiting plate and a driving device. The height of the lower end surface of the limiting plate increases in the direction of powder conveying, and the pressure is adjusted through the airbag or hydraulic capsule to gradually release the stress in the brick blank to ensure the quality of the brick blank.
The smooth release of stress in the brick blank is achieved, cracks are avoided, and the roll forming speed and yield are improved.
Smart Images
Figure CN223161094U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of roller pressing, in particular to a roller pressing machine. Background Art
[0002] In the existing brick blank roller forming technology, powder is formed into brick blanks by rolling with forming rollers. Internal stress will be formed inside the brick blank during the rolling process. After the brick blank passes the lowest point of the forming roller, the internal stress will be released. If the internal stress is released instantly or too quickly, the brick blank will crack, so a stress release device is required to prevent the internal stress of the brick blank from being released too quickly. However, in the existing brick blank roller forming equipment, based on cost considerations, only one stress release device is often provided. In actual rolling, it is found that the stress release interval length provided by a single stress release device is limited, resulting in the brick blank needing to fully release the internal stress in this limited interval, which requires a longer time to release, affecting the roller forming speed and thus affecting the brick blank output. There is room for improvement.
[0003] Therefore, there is an urgent need for a roll forming device that can achieve faster roll forming speed and higher output. Utility Model Content
[0004] In order to overcome at least one of the defects of the prior art described above, according to one aspect of the present invention, a roller press is provided, which can release the internal stress of the brick more smoothly, increase the roller forming speed and the brick output.
[0005] A roller press, comprising:
[0006] a first forming roller;
[0007] At least two groups of stress release devices are arranged behind the first forming roller along the powder conveying direction, wherein each group of the stress release devices includes a limit plate and a driving device for driving the limit plate to rise and fall.
[0008] In one embodiment of the present invention, the height positions of the lower end surfaces of the respective limiting plates in at least two groups of the stress release devices increase gradually along the powder conveying direction.
[0009] In one embodiment of the present invention, the lowest point of the first forming roller and the lower end surfaces of the respective limiting plates in the at least two groups of stress release devices increase in height along the powder conveying direction.
[0010] In one embodiment of the present invention, at least one air bag or hydraulic capsule is provided on the lower end surface of the limiting plate in the stress release device in at least one group.
[0011] In one embodiment of the present invention, a plurality of the airbags or hydraulic capsules are provided, and the plurality of the airbags or hydraulic capsules are arranged at intervals along the length direction of the limiting plates where they are located.
[0012] In an embodiment of the present utility model, in the length direction of the limiting plate, the length of the airbag or hydraulic capsule located in the middle of the limiting plate is longer than that of the airbag or hydraulic capsule in other positions.
[0013] In an embodiment of the present utility model, the plurality of airbags or hydraulic capsules arranged in the length direction of the limiting plate form a capsule group, and at least two groups of the capsule groups are arranged at intervals in the width direction of the limiting plate.
[0014] In an embodiment of the present utility model, two sets of the stress release devices are provided, and the two sets of stress release devices are respectively a first stress release device and a second stress release device;
[0015] The first stress release device includes a first limiting plate and a first driving device for driving the first limiting plate to lift and lower;
[0016] The second stress release device includes a second limiting plate and a second driving device for driving the second limiting plate to lift and lower.
[0017] In an embodiment of the present utility model, the first forming roller, the first stress release device, and the second stress release device are arranged in sequence along the powder conveying direction;
[0018] The height positions of the lowest point of the first forming roller, the lower end surface of the first limiting plate, and the lower end surface of the second limiting plate increase along the powder conveying direction.
[0019] In an embodiment of the present utility model, a second forming roller is further included;
[0020] The roll press further includes a first driving roller, a first driven roller, and a compaction belt tensioned between the first driving roller and the first driven roller. The first driven roller, the first forming roller, at least two groups of stress release devices, and the first driving roller are arranged in sequence in the conveying direction;
[0021] The roll press further includes a second driving roller, a second driven roller, and a conveyor belt tensioned between the second driving roller and the second driven roller. The second driven roller, the second forming roller, and the second driving roller are arranged in sequence in the conveying direction;
[0022] The roll press includes a support plate, the support plate is arranged between the second forming roller and the second driving roller, and the support plate is arranged at a position corresponding to at least two groups of stress release devices.
[0023] In summary, a roll press provided by the present utility model has the following technical effects:
[0024] During the actual rolling process, the powder is rolled by the first forming roller to form a brick blank. During the rolling process, internal stress will be formed inside the brick blank. After the brick blank passes through the first forming roller, the internal stress will be released. If the internal stress is released instantly or too quickly, the brick blank will crack. Therefore, a stress release device needs to be provided to gradually release the internal stress of the brick blank. After the brick blank passes through the first forming roller, the surface of the brick blank will expand due to the release of internal stress. The limiting plate can limit the expansion of the upper surface of the brick blank, allowing the internal stress of the brick blank to be gradually released during the conveying process. The smoother the stress release process, the more stable the quality of the brick blank. Therefore, the pressure is gradually reduced by the respective limiting plates in at least two groups of stress release devices, allowing the brick blank to release stress more smoothly, ensuring that the brick blank will not crack and ensuring the quality of the brick blank. Therefore, the internal stress of the brick blank is released more smoothly, which can increase the rolling forming speed and thus increase the output. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a structural diagram of a roller press according to an embodiment of the present invention;
[0026] Figure 2 This is a schematic structural diagram of an air bag or hydraulic capsule on a limit plate in a roller press according to an embodiment of the present utility model;
[0027] Figure 3 This is another structural schematic diagram of the air bag or hydraulic capsule on the limit plate of the roller press in an embodiment of the present utility model;
[0028] Figure 4 This is another structural schematic diagram of the air bag or hydraulic capsule on the limit plate in the roller press according to an embodiment of the present utility model;
[0029] Figures: 11-first forming roller, 12-second forming roller, 21-first stress release device, 22-first limit plate, 23-first drive device, 31-second stress release device, 32-second limit plate, 33-second drive device, 41-first active roller, 42-first driven roller, 43-compacting belt, 51-second active roller, 52-second driven roller, 53-conveyor belt, 61-airbag, 7-hopper, 71-discharge port, 8-brick, 9-powder, 10-support plate. DETAILED DESCRIPTION
[0030] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0033] The embodiment of the utility model discloses a roller press, which can be specifically referred to Figure 1-Figure 4 In an optional embodiment, the roller press may specifically include a first forming roller 11 and at least two groups of stress release devices arranged behind the first forming roller 11 along the conveying direction of the powder 9, wherein each group of stress release devices may specifically include a limit plate and a driving device for driving the limit plate to rise and fall.
[0034] During the actual rolling process, the powder 9 is rolled by the first forming roller 11 to form a brick blank 8. During the rolling process, internal stress will be formed inside the brick blank 8. After the brick blank 8 passes through the first forming roller 11, the internal stress will be released. If the internal stress is released instantly or too quickly, the brick blank will crack. Therefore, a stress release device needs to be provided to gradually release the internal stress of the brick blank. After the brick blank passes through the first forming roller 11, the surface of the brick blank will expand due to the release of internal stress. The limit plate can limit the expansion of the upper surface of the brick blank 8, allowing the internal stress of the brick blank 8 to be gradually released during the conveying process. The smoother the stress release process, the more stable the quality of the brick blank 8. Therefore, the pressure is gradually reduced by the respective limit plates in at least two groups of stress release devices, allowing the brick blank 8 to release stress more smoothly, ensuring that the brick blank 8 will not crack and ensuring the quality of the brick blank 8. Therefore, the internal stress of the brick blank 8 is released more smoothly, which can increase the rolling forming speed and thus increase the output.
[0035] In an optional embodiment, the driving device can be specifically a telescopic cylinder or a telescopic motor, which has a simple structure, is easy to manufacture and produce, and reduces manufacturing difficulty.
[0036] To further smooth the stress release process and stabilize the quality of the bricks 8, in an optional embodiment, the lower end faces of the respective limiting plates in at least two sets of stress release devices are positioned at increasing heights along the conveying direction of the powder material 9. This arrangement allows for a more gradual and stable release of stress within the bricks 8 during conveying, further improving the quality of the bricks 8. It should be noted that the lower end faces of the limiting plates refer to the ends of the limiting plates facing the powder material 9.
[0037] Since in the actual rolling process, after the brick blank passes the lowest point of the first forming roller 11, the surface of the brick blank will expand due to the release of internal stress, there is a connection and transition area between the first forming roller 11 and the limit plate of the stress release device arranged adjacent to the first forming roller 11. In this area, the lowest point of the first forming roller 11 and the height position of the lower end surface of the limit plate of each of the at least two groups of stress release devices increase along the conveying direction of the powder 9. This means that the lowest point of the first forming roller 11 and the height position of the lower end surface of the limit plate of the stress release device adjacent to the first forming roller 11 increase along the conveying direction of the powder 9, and begin to release smoothly at the connection and transition point, which can further improve the quality of the brick blank 8.
[0038] Of course, in other embodiments, the lowest point of the first forming roller 11 and the height position of the lower end surface of the limiting plate of the stress release device adjacent to the first forming roller 11 are set flush along the conveying direction of the powder 9, which can ensure good docking at the transition point, and the internal stress can be released in the subsequent limiting plate, which can also improve the quality of the brick 8.
[0039] During the actual rolling process, in order to gradually release the stress within the green brick 8 during transportation, resulting in a smoother stress release, different pressures can be set during transportation. For example, in one optional embodiment, at least one airbag 61 or hydraulic bladder is disposed on the lower end surface of the limiting plate in at least one set of stress release devices. This arrangement allows for different pressures to be set based on actual conditions. For example, by varying the volume of gas within the airbag 61 or hydraulic bladder, varying pressures can be generated, resulting in a smoother stress release during transportation and further improving the quality of the green brick 8.
[0040] In an optional embodiment, along the length direction of the limiting plate, the length of the airbag 61 or hydraulic capsule located in the middle of the limiting plate is longer than the length of the airbag 61 or hydraulic capsule at other positions.
[0041] In an optional embodiment, the plurality of air bags 61 or hydraulic capsules arranged along the length direction of the limiting plate are formed into a bag group, and at least two groups of bag groups are provided and are arranged at intervals along the width direction of the limiting plate.
[0042] In order to better understand the purpose and effect of setting the number of stress release devices in the roller press, an example is given to illustrate. For example, in an optional embodiment, the number of stress release devices can be specifically set to two groups, and the two groups of stress release devices are respectively a first stress release device 21 and a second stress release device 31. After many research and development, when the number of stress release devices is two groups, the yield rate of the brick blank 8 that can be obtained is not much different from that of the stress release devices with more than two groups. Therefore, it can not only ensure the quality of the brick blank 8, but also save manufacturing materials and reduce manufacturing costs.
[0043] In an optional embodiment, the first stress-relieving device 21 includes a first limiting plate 22 and a first driving device 23 for driving the first limiting plate 22 upward and downward. With this arrangement, the first driving device 23 can independently drive the first limiting plate 22 upward and downward, thereby relieving stress within the brick. The first driving device 23 can be specifically a telescopic cylinder or a telescopic motor.
[0044] In an optional embodiment, the second stress relief device 31 includes a second limiting plate 32 and a second driving device 33 for driving the second limiting plate 32 upward and downward. With this arrangement, the first driving device 23 can independently drive the first limiting plate 22 upward and downward, thereby relieving stress within the brick. The second driving device 33 can be specifically a telescopic cylinder or a telescopic motor.
[0045] In an embodiment of two sets of stress relief devices, the height positions of the first forming roller 11, the first limiting plate 22, and the second limiting plate 32 can be such that, for example, in one optional embodiment, the first forming roller 11, the first stress relief device 21, and the second stress relief device 31 are sequentially arranged along the conveying direction of the powder material 9; the lowest point of the first forming roller 11, the lower end surface of the first limiting plate 22, and the lower end surface of the second limiting plate 32 are positioned at increasing heights along the conveying direction of the powder material 9. This arrangement allows the stress within the green brick 8 to be released more gradually and smoothly during the conveying process, thereby further improving the quality of the green brick 8.
[0046] In order to better understand the rolling process of the roller press, in an optional embodiment, the roller press further includes a second forming roller 12 .
[0047] The roller press also includes a first active roller 41, a first driven roller 42, and a compacting belt 43 tensioned between the first active roller 41 and the first driven roller 42; the first forming roller 11 is arranged between the first active roller 41 and the first driven roller 42; the first driven roller 42, the first forming roller 11, at least two groups of stress release devices and the first active roller 41 are arranged in sequence in the conveying direction.
[0048] In an alternative embodiment, two sets of stress relief devices are provided, namely a first stress relief device 21 and a second stress relief device 31. The first driven roller 42, the first forming roller 11, the first stress relief device 21, the second stress relief device 31, and the first driving roller 41 are arranged in sequence in the conveying direction.
[0049] The roller press further includes a second driving roller 51, a second driven roller 52, and a conveyor belt 53 tensioned between the second driving roller 51 and the second driven roller 52. The second forming roller 12 is arranged between the second driving roller 51 and the second driven roller 52. The second driven roller 52, the second forming roller 12, and the second driving roller 51 are arranged in sequence in the conveying direction.
[0050] The roller press further includes a hopper 7. The hopper 7 is arranged on the input side in the conveying direction of the conveyor belt 53 and above the conveyor belt 53. A blanking port 71 is provided at the bottom of the hopper 7 facing the conveyor belt 53 for discharging materials.
[0051] In an alternative embodiment, the first driving roller 41, the first driven roller 42, and the compaction belt 43 are arranged on the upper side of the roller press, and the second driving roller 51, the second driven roller 52, and the conveyor belt 53 are arranged on the lower side of the roller press.
[0052] It should be noted that the powder material 9 is roll-pressed by both the first forming roller 11 and the second forming roller 12 into a brick blank 8. Internal stress will be formed inside the brick blank 8 during the roll-pressing process. After the brick blank 8 passes through the lowest point of the first forming roller 11, the internal stress will be released. If the internal stress is released instantaneously or too quickly, cracks will appear on the brick blank. Therefore, the first stress relief device 21 and the second stress relief device 31 are provided to gradually release the internal stress of the brick blank. After the brick blank 8 passes through the lowest point of the first forming roller 11, the surface of the brick blank will expand due to the release of internal stress. The air bags 61 or hydraulic capsules on the lower end surfaces of the first limiting plate 22 and the second limiting plate 32 limit the expansion of the upper surface of the brick blank 8, allowing the internal stress of the brick blank 8 to be gradually released during the conveying process. At the same time, since the smoother the stress relief process, the more stable the quality of the brick blank 8, multiple groups of stress relief devices can gradually reduce the pressure by setting the pressure of each group of air bags 61 or hydraulic capsules, enabling the brick blank 8 to release stress smoothly and ensuring that no cracks will appear on the brick blank 8 and guaranteeing the quality of the brick blank 8.
[0053] In an alternative embodiment, the roll press may further include a support plate 10. The support plate 10 may be specifically disposed between the second forming roller 12 and the second driving roller 51, and the support plate 10 is disposed at a position corresponding to at least two groups of stress relief devices, that is, the support plate 10 and at least two groups of stress relief devices are arranged vertically aligned. With this arrangement, since the conveyor belt 53 itself has a certain flexibility, the support plate 10 is specifically provided in the area where the internal stress of the brick blank 8 is released, which can provide sufficient support force for the release of the internal stress of the brick blank 8, and better cooperate with the first limiting plate 22 and the second limiting plate 32 to limit the expansion of the brick blank 8, so that the internal stress of the brick blank 8 is released more smoothly during the conveying process, further improving the quality of the brick blank 8.
[0054] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.
Claims
1. A roller press, characterized in that, Comprising: A first forming roller (11); At least two sets of stress release devices arranged after the first forming roller (11) along the conveying direction of the powder material (9), each set of the stress release devices including a limiting plate and a driving device for driving the limiting plate to move up and down; There are two sets of the stress release devices, and the two sets of the stress release devices are respectively a first stress release device (21) and a second stress release device (31); The first stress release device (21) includes a first limiting plate (22) and a first driving device (23) for driving the first limiting plate (22) to move up and down; The second stress release device (31) includes a second limiting plate (32) and a second driving device (33) for driving the second limiting plate (32) to move up and down.
2. A roller press according to claim 1, characterized in that, The height positions of the lower end faces of the limiting plates in each of the at least two sets of the stress release devices increase along the conveying direction of the powder material (9).
3. A roll press according to claim 1, characterized in that, The lowest point of the first forming roller (11) and the height positions of the lower end faces of the limiting plates in each of the at least two sets of the stress release devices increase along the conveying direction of the powder material (9).
4. A roll press according to any one of claims 1 to 3, characterized in that, At least one air bag (61) or hydraulic capsule is arranged on the lower end face of the limiting plate in at least one set of the stress release devices.
5. A roll press according to claim 4, characterized in that, There are multiple air bags (61) or hydraulic capsules, and the multiple air bags (61) or hydraulic capsules are arranged at intervals along the length direction of the limiting plate where they are located. Item 6. A roller press according to claim 5, characterized in that, In the length direction of the limiting plate, the length of the air bag (61) or hydraulic capsule located in the middle of the limiting plate is longer than the lengths of the air bags (61) or hydraulic capsules at other positions.
7. A roller press according to claim 5, characterized in that, The multiple air bags (61) or hydraulic capsules arranged along the length direction of the limiting plate form a capsule group, and there are at least two sets of the capsule groups arranged at intervals along the width direction of the limiting plate.
8. A roller press according to claim 1, characterized in that, The first forming roller (11), the first stress release device (21) and the second stress release device (31) are arranged in sequence along the conveying direction of the powder material (9); The height positions of the lowest point of the first forming roller (11), the lower end face of the first limiting plate (22) and the lower end face of the second limiting plate (32) increase along the conveying direction of the powder material (9).
9. A roller press according to any one of claims 1-3, 5-8, characterized in that It further includes a second forming roller (12); The roll press further includes a first driving roller (41), a first driven roller (42) and a compaction belt (43) tensioned between the first driving roller (41) and the first driven roller (42), and the first driven roller (42), the first forming roller (11), at least two sets of stress release devices and the first driving roller (41) are arranged in sequence in the conveying direction; The roll press further includes a second driving roller (51), a second driven roller (52) and a conveyor belt (53) tensioned between the second driving roller (51) and the second driven roller (52), and the second driven roller (52), the second forming roller (12) and the second driving roller (51) are arranged in sequence in the conveying direction; The roll press includes a support plate (10), the support plate (10) is arranged between the second forming roller (12) and the second driving roller (51), and the support plate (10) is arranged at a position corresponding to at least two sets of stress release devices.