Equipment for relieving stress of metal plate

Abstract

The utility model provides equipment for destressing a metal plate. The equipment comprises an equipment box body, pressurizing equipment and a heating partition plate, the metal plates are stacked in the equipment box body, heating partition plates are arranged among the multiple metal plates, and the heating partition plates are used for dividing the multiple metal plates into different plate groups and heating the metal plates; the pressurizing equipment is installed on the top wall of the equipment box body and used for applying downward pressure to the multiple stacked metal plates through a top pressing plate. The plates are separated according to a certain number through the partition plates, the problem that stress is uneven due to the uneven thickness of the original plates can be solved, the partition plates have the heating function, the edge temperature and the internal temperature of the metal plates can be rapidly consistent, downward pressure is applied through the top pressing plate, and therefore internal stress is fully released, and production efficiency is improved. The internal stress of the plate treated in this way is greatly eliminated, and the product precision and quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of metal sheet processing technology, specifically to a device for stress relief of metal sheets. Background Technology

[0002] Metal sheets, especially large-sized sheets, are prone to deformation, bending, and arching during subsequent CNC machining processes such as engraving and milling, which can affect product quality and precision, and in severe cases, lead to the direct scrapping of the product material. Therefore, stress relief treatment for such materials is particularly important.

[0003] Traditional heat treatment processes use an integral heating furnace combined with simple pressurization, which has the following drawbacks: insufficient temperature control precision, low heat transfer efficiency and large temperature gradient, significant temperature difference between the edge and core of the sheet, resulting in uneven stress relief; and when processing uneven surfaces or stacked sheets of different thicknesses, local stress concentration is likely to occur. Therefore, there is an urgent need for a new type of stress relief equipment for metal sheets.

[0004] Patent document CN221117518U discloses a stress-relieving tempering device for metal parts of large machine tools. Before processing, the sheet metal for machining is placed on top of a placement table. Then, a servo motor on one side of the support frame is started to drive a bidirectional lead screw to rotate. The bidirectional lead screw drives the connecting arm through threaded sleeves on both sides, and the connecting arm drives the positioning clamp on one side to move, so that the positioning clamp fits against both sides of the sheet metal for positioning, preventing the sheet metal from shaking during processing and affecting the processing. This solves the problem of inconvenient sheet metal positioning. This solution uses a combination of overall heating and simple pressurization, which has the problem of large temperature gradient and is not suitable for stacking sheet metal. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a device for stress relief of metal sheets.

[0006] The device for stress relief of metal sheets according to the present invention includes a device housing, a pressurizing device, and a heating partition.

[0007] The metal plates are stacked inside the equipment housing, and heating partitions are provided between the multiple metal plates. The heating partitions are used to separate the multiple metal plates into different plate groups and to heat the metal plates.

[0008] The pressurizing device is installed on the top wall of the equipment housing and is used to apply downward pressure to multiple stacked metal plates through the top pressure plate.

[0009] Preferably, the pressurizing device includes a hydraulic pressure rod, the telescopic end of which is connected to the top pressure plate;

[0010] The lower surface of the top pressure plate is used to abut against the metal sheet located at the top, and applies downward pressure to the metal sheet under the action of the hydraulic pressure rod.

[0011] Preferably, the heating partition has a heating wire inside with a coiled structure, and both the upper and lower sides of the heating partition have heat-conducting surfaces that contact the metal plate.

[0012] Preferably, a bottom support platform is installed at the bottom of the equipment housing, and the metal plates are stacked on the bottom support platform.

[0013] Preferably, the heating partition is a plurality of pieces, which are arranged at intervals between different layers of the metal plate.

[0014] Preferably, heating wires are arranged on the inner wall of the equipment housing.

[0015] Preferably, the contact surfaces of the top pressure plate, heating partition, and bottom support platform with the metal sheet are all planar, and the area of ​​each contact surface is larger than the area of ​​the metal sheet.

[0016] Preferably, among the multiple heating partitions, the heating partition at the bottom and the bottom support platform form multiple stacking spaces between the heating partitions, and the multiple stacking spaces have the same height dimension.

[0017] Preferably, it also includes a heating module, which is disposed outside the equipment housing and electrically connected to the heating partition, for adjusting the heating temperature of the heating partition.

[0018] Preferably, the top pressure plate, heating partition, and bottom support platform are all horizontally arranged.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention separates the sheet metal into a certain number of sections using partitions, which avoids the problem of uneven stress caused by the thickness and unevenness of the original sheet metal. The partitions also have a heating function, which allows the temperature of the metal sheet metal edges and interior to quickly reach a uniform level. Furthermore, the downward pressure applied by the top pressure plate fully releases the internal stress. The sheet metal treated in this way greatly eliminates internal stress and improves the precision and quality of the product. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the heating partition in this utility model.

[0024] The diagram shows:

[0025] Detailed Implementation

[0026] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0027] This utility model discloses a device for stress relief of metal sheets, aiming to solve the problems existing in the prior art of using an overall heating furnace and simple pressurization. By setting up partitions to separate the sheets into a certain number, the problem of uneven stress caused by the original sheet thickness and unevenness can be avoided. In addition, the partitions have a heating function, which can make the temperature of the edge and the inside of the metal sheet reach the same level quickly. By applying downward pressure through the top pressure plate, the internal stress is fully released. The sheet treated in this way greatly eliminates the internal stress and improves the product precision and quality.

[0028] According to the device for stress relief of metal sheets provided by this utility model, such as Figure 1 As shown, the device includes a housing 1, a pressurizing device, and a heating partition 4. The metal plates are stacked inside the housing 1, and a heating partition 4 is provided between the multiple metal plates. The heating partition 4 is used to separate the multiple metal plates into different plate groups and to heat the metal plates. The pressurizing device is installed on the top wall of the housing 1 and is used to apply downward pressure to the multiple stacked metal plates through the top pressure plate 3.

[0029] This invention separates the stacked metal plates into a certain number by setting a heating partition 4 between them, thereby avoiding problems such as uneven stress caused by the original plate thickness and unevenness. At the same time, the heating partition 4 can heat the metal plate in the middle, so that the temperature of the edge and the inside of the metal plate can quickly reach the same level, thereby fully releasing the internal stress.

[0030] In a preferred embodiment, the pressurizing device includes a hydraulic pressure rod 2, the telescopic end of which is connected to a top pressure plate 3. The lower surface of the top pressure plate 3 is used to abut against a metal sheet located at the top, applying downward pressure to the metal sheet under the action of the hydraulic pressure rod 2. The combination of the hydraulic pressure rod 2 and the top pressure plate 3 allows for the application of adjustable pressure to the sheet.

[0031] In a preferred embodiment, the heating partition 4 is internally provided with a coiled heating wire 6, and both the upper and lower sides of the heating partition 4 are provided with heat-conducting surfaces that contact the metal plate. The inner wall of the equipment housing 1 is arranged with heating wires. By simultaneously heating the inner wall of the housing and the heating partition 4, the heat conduction efficiency can be greatly improved and the temperature gradient can be reduced. Furthermore, the temperature difference between the edge and core of the plate is reduced through simultaneous heating.

[0032] In a preferred embodiment, a bottom support platform 5 is installed at the bottom of the equipment housing 1, and the metal plates are stacked on the bottom support platform 5. The bottom support platform 5 adopts a high-rigidity cast iron base, and the gravity load of the metal plates is evenly distributed through the full-plane support design, avoiding local stress residue caused by uneven support, ensuring both thermal conductive contact area and preventing the plates from sliding and shifting.

[0033] In a preferred embodiment, the heating partition 4 consists of multiple pieces, which are spaced apart between different layers of the metal sheet. By using multiple heating partitions 4, the metal sheet is divided into multiple independent heating units along the vertical direction. Each unit preferably contains three layers of sheet material. This layered design significantly shortens the heat conduction path. Combined with the bidirectional heat conduction of the heating wires 6 inside the partitions, the temperature difference between the core and surface of the sheet material can be effectively reduced.

[0034] In a preferred embodiment, the contact surfaces of the top pressure plate 3, the heating partition 4, and the bottom support platform 5 with the metal sheet are all planar, and the area of ​​each contact surface is larger than the area of ​​the metal sheet. By designing oversized contact surfaces, an edge heating zone is formed, ensuring that the edge of the sheet remains within the heating zone in real time when pressure is applied by the hydraulic rod 2.

[0035] In a preferred embodiment, among the multiple heating partitions 4, the bottom heating partition 4 and the bottom support platform 5 form multiple stacking spaces for the plates, and the height of the multiple stacking spaces is the same. By setting the stacking spaces of equal height, it is ensured that the pressure deviation of each layer of plates is small.

[0036] In a preferred embodiment, a heating module is also provided. The heating module is located outside the equipment housing 1 and electrically connected to the heating partition 4, and is used to adjust the heating temperature of the heating partition 4. The heating module can achieve independent temperature control, so that independent temperature zones are formed between adjacent heating partitions 4, and different temperatures can be set for different material boards.

[0037] In a preferred embodiment, the top pressure plate 3, the heating partition 4, and the bottom support platform 5 are all horizontally arranged. All these components are horizontally calibrated to ensure that the pressure transmission direction is perpendicular to the plane of the plate, thereby achieving precise pressure application.

[0038] This invention uses heating and insulation of the entire box body, separates the corresponding number of plates by heating partition 4, and applies a certain load force downward through the top pressure plate 3 by hydraulic pressure rod 3. The whole has the advantages of fast heating, uniform temperature and force distribution of the plates inside the equipment, and is not easy to deform or arch during subsequent processing, which can improve the flatness and stability of metal plates.

[0039] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A device for stress relief of metal sheets, characterized in that, Includes equipment housing (1), pressurization equipment and heating partition (4); The metal plates are stacked inside the equipment housing (1), and a heating partition (4) is provided between the multiple metal plates. The heating partition (4) is used to separate the multiple metal plates into different plate groups and to heat the metal plates. The pressurizing device is installed on the top wall of the equipment box (1) and is used to apply downward pressure to multiple stacked metal plates through the top pressure plate (3); The heating partition (4) is provided with a heating wire (6) inside the partition in a loop structure, and the upper and lower sides of the heating partition (4) are provided with heat-conducting surfaces that contact the metal plate. The equipment housing (1) is equipped with a heating module on the outside. The heating module is electrically connected to the heating partition (4) and is used to adjust the heating temperature of the heating partition (4).

2. The device for stress relief of metal sheets according to claim 1, characterized in that, The pressurizing device includes a hydraulic pressure rod (2), the telescopic end of which is connected to the top pressure plate (3); The lower surface of the top pressure plate (3) is used to abut against the metal plate located at the top, and applies downward pressure to the metal plate under the action of the hydraulic pressure rod (2).

3. The device for stress relief of metal sheets according to claim 1, characterized in that, The bottom of the equipment housing (1) is equipped with a bottom support platform (5), and the metal plates are stacked on the bottom support platform (5).

4. The device for stress relief of metal sheets according to claim 3, characterized in that, The heating baffle (4) consists of multiple pieces, which are arranged at intervals between different layers of the metal plate.

5. The device for stress relief of metal sheets according to claim 1, characterized in that, Heating wires are arranged on the inner wall of the equipment housing (1).

6. The device for stress relief of metal sheets according to claim 3, characterized in that, The contact surfaces of the top pressure plate (3), heating partition (4) and bottom support platform (5) with the metal plate are all flat, and the area of ​​the contact surfaces is larger than the area of ​​the metal plate.

7. The device for stress relief of metal sheets according to claim 4, characterized in that, Among the multiple heating partitions (4), the heating partition (4) at the bottom and the bottom support platform (5) form multiple plate stacking spaces, and the height dimensions of the multiple plate stacking spaces are the same.

8. The device for stress relief of metal sheets according to claim 3, characterized in that, The top pressure plate (3), heating partition (4) and bottom support platform (5) are all horizontally arranged.

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