Ultrathin metal sheet and ultrathin metal sheet tube

Abstract

The invention provides an ultrathin metal sheet which comprises a sheet body, the sheet body comprises a first part and a second part, the thickness of the first part is larger than that of the second part, a third part is arranged between the first part and the second part in a transition mode, the thickness of the third part is uneven, and the thickness change from the end, connected with the first part, of the third part to the end, connected with the second part, of the third part is gradually changed. The ultra-thin metal sheet is special-shaped and non-uniform in thickness, and the blank of special-shaped ultra-thin metal sheets in China is filled. According to the ultra-thin metal sheet pipe manufactured through the method, a traditional pipe manufacturing process is changed, the metal pipe does not need to be stretched any more, the technical prejudice of stretching forming of the ultra-thin metal sheet pipe is overcome, and the existing technical limitation that the ultra-thin metal sheet pipe cannot be manufactured through a stretching forming method is also avoided; the ultra-thin metal sheet pipe is not formed through stretching, the material of the ultra-thin metal sheet pipe does not change in the extending direction of the ultra-thin metal sheet pipe, and the ultra-thin metal sheet pipe is full of strength and not prone to being broken off.

Description

Technical Field

[0001] The invention relates to the field of ultra-thin metal sheets, in particular to an ultra-thin metal sheet and an ultra-thin metal sheet tube. Background Art

[0002] Traditional steel-related processes often use "thick, tough, and heavy industry" as quality standards, but in order to be suitable for high-tech industries, the field of ultra-thin metal sheet technology is a battleground for related companies.

[0003] The concept of ultra-thin metal sheet is rooted in ultra-thin precision strip steel. Different from the thickness of conventional stainless steel sheets, stainless steel strip steel with a thickness of ≤0.3mm and as thin as 0.01mm is generally called ultra-thin precision strip steel. It belongs to the field of stainless steel specialization, and the definition of "ultra-thin" thickness of ultra-thin metal sheet is similar to this.

[0004] The existing technology reduces the thickness of 600mm stainless steel precision foil to 0.02mm, and then rolls it to the limit value of 0.015mm. However, the stainless steel sheet obtained after the aforementioned thinning process is still a sheet of uniform thickness, while the technology for obtaining uneven thickness special-shaped ultra-thin sheets and their pipe making after processing is still blank in China.

[0005] Because the thickness of ultra-thin metal sheets is very thin, it is very difficult to process them into special-shaped sheets with uneven thickness and to make pipes with them. For example, the traditional metal pipe making process is to cut the stainless steel sheets into the required width, and then roll and weld them through the pipe making equipment. The metal pipes obtained by this traditional process are relatively thick, with the thinnest diameter being around 2.00mm-4.00mm. On this basis, if you want to get a metal pipe with a thinner diameter, you must stretch the metal pipe several times. During the stretching process, the diameter of the metal pipe will become thinner and the wall thickness of the metal pipe will become thinner. However, the difficulty of each stretching is related to the ratio of the wall thickness of the metal pipe after the stretching to the wall thickness of the metal pipe before the stretching. After several stretchings, the stretching difficulty of the metal pipe becomes greater, which is similar to exponential growth, and the metal pipe is easy to break during stretching, and it is impossible to make an ultra-thin and strong metal pipe. Summary of the invention

[0006] In view of the above technical defects, the present invention provides an ultra-thin metal sheet and an ultra-thin metal sheet tube.

[0007] The object of the present invention is achieved in that:

[0008] An ultra-thin metal sheet comprises a sheet body, wherein the sheet body comprises a first portion and a second portion, wherein the thickness of the first portion is greater than that of the second portion, and a third portion is provided between the first portion and the second portion, wherein the thickness of the third portion is uneven, and the thickness of the third portion changes gradually from one end thereof connected to the first portion to the other end thereof connected to the second portion.

[0009] Preferably, the thickness of the first portion is uniform, the thickness of the second portion is uniform, and the bottom surfaces of the first portion, the second portion and the third portion are coplanar.

[0010] Preferably, the thickness of the first portion is 0.05 mm to 0.5 mm.

[0011] Preferably, the second portion has a thickness of 0.01 mm to 0.3 mm.

[0012] Preferably, the second portion has a thickness of 0.02 mm to 0.3 mm.

[0013] Preferably, the second portion has a thickness of 0.02-0.2 mm.

[0014] Preferably, the upper surface of the third portion is a flat surface.

[0015] Preferably, the upper surface of the third portion is a concave arc surface.

[0016] Preferably, the number of the first part, the second part and the third part are two, the two second parts are directly connected, the two third parts are symmetrically arranged on both sides of the two second parts, and the two first parts are symmetrically arranged on both sides of the two third parts.

[0017] Preferably, the ultra-thin metal sheet tube is formed by rolling and welding any one of the ultra-thin metal sheets mentioned above in sequence.

[0018] The ultra-thin metal sheet of the present application is of special shape and uneven thickness, which fills the gap of special-shaped ultra-thin metal sheets in China and meets the needs of the country's high-end fields;

[0019] The ultra-thin metal sheet tube of the present application scheme changes the traditional tube making process, and no longer needs to stretch the metal tube, thus overcoming the technical prejudice of ultra-thin metal sheet tube stretching and forming, and also avoiding the existing technical limitation that the stretching forming method cannot realize ultra-thin metal sheet tube;

[0020] The ultra-thin metal sheet tube of the present application is not formed by stretching, and its material does not undergo material changes in its extension direction. The ultra-thin metal sheet tube of the present application is strong and not easy to break;

[0021] The ultra-thin metal sheet tube of the present application is made of a special-shaped ultra-thin metal sheet with uneven thickness, which forms a smaller contact surface at one end of the tube and can complete work with extremely high precision. The smaller contact surface also represents a higher intensity output under the same conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Hereinafter, the present application will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0023] Figure 1 This is a top view of the ultra-thin metal sheet of this application;

[0024] Figure 2 This is a cross-sectional view of an ultra-thin metal sheet according to Example 1 of the present application;

[0025] Figure 3 This is a cross-sectional view of an ultra-thin metal sheet tube according to Example 3 of the present application;

[0026] Figure 4 A cross-sectional view of an ultra-thin metal sheet according to Embodiment 5 of the present application;

[0027] Figure 5 This is a cross-sectional view of the ultra-thin metal sheet after being made into a tube according to Example 5 of the present application;

[0028] Figure 6 This is a cross-sectional view of the final product of the ultra-thin metal sheet of Example 5 of the present application;

[0029] Figure 7 This is a cross-sectional view of an ultra-thin metal sheet according to Example 6 of the present application;

[0030] Figure 8 This is a cross-sectional view of the ultra-thin metal sheet after tube making in Example 6 of the present application;

[0031] Fig. 9 This is a cross-sectional view of the final product of the ultra-thin metal sheet of the embodiment of the present application;

[0032] Fig.10 It is a front view of an ultra-thin metal sheet processing device;

[0033] Fig.11 for Fig.10 A partial enlarged view of part A;

[0034] Fig.12 It is a partial structural diagram of an ultra-thin metal sheet processing equipment;

[0035] Fig.13 for Fig.12 A partial enlarged view of part B;

[0036] Fig.14 This is a right view of an ultra-thin metal sheet processing equipment.

[0037] In the figure: 1-machine table, 2-sheet, 3-processing mechanism, 31-tool, 4-mold, 41-through groove, 42-U-shaped groove, 421-processing window, 43-venting groove, 431-venting hole, 44-bottom plate, 45-pressing plate, 451-first pressing plate, 452-second pressing plate, 453-third pressing plate, 46-mold base, 5-negative pressure device, 6-adjusting mechanism, 61-fixed plate, 62-movable plate, 63-handwheel, 64-spring, 65-threaded adjusting column.

[0038] In the drawings, the same reference numerals are used for the same components, and the drawings are not drawn to scale. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present application. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0040] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0041] Unless otherwise indicated, directional terms such as "upper" and "lower" are generally used to refer to the directions shown in the accompanying drawings.

[0042] Embodiment 1

[0043] The present embodiment provides an ultra-thin metal sheet, comprising a first portion 11 and a second portion 21 of uniform thickness, wherein the thickness of the first portion 11 is greater than that of the second portion 21, and a third portion 31 is provided between the first portion 11 and the second portion 21, wherein the thickness of the third portion 31 is non-uniform, and the thickness of the third portion 31 changes gradually from one end of the third portion 31 connected to the first portion to the other end of the third portion 31 connected to the second portion, and the bottom surfaces of the first portion 11, the second portion 21 and the third portion 31 are coplanar, such as Figure 1 As shown. Figure 2 As shown, the upper surface of the third portion 31 is a flat surface. The thickness of the first portion 11 is 0.05 mm to 0.5 mm.

[0044] The ultra-thin metal sheet of uniform thickness is transformed into the special-shaped ultra-thin metal sheet described in this embodiment through the following steps: pressing and fixing the ultra-thin metal sheet to be processed, and transporting the ultra-thin metal sheet to be processed on a fixed track; setting a special-shaped tool to rotate and cut out the second part 21 and the third part 31. The maximum thickness range of the second part 21 is 0.01mm~0.3mm, but in order to meet the current market demand, the thickness of the second part 21 is preferably 0.02mm~0.3mm or 0.02mm~0.2mm.

[0045] The above steps can be performed by ultra-thin metal sheet processing equipment, such as Fig.10 As shown, the machine platform 1 includes a processing mechanism 3 and a mold 4, and a mold base 46 ( Fig.10 The mold 4 is fixedly mounted on the machine table 1. A through groove 41 extending in the left-right direction is provided in the mold 4, and the through groove 41 is used to place the cut sheet 2. A ventilation groove 43 is provided in the middle of the mold 4, and the air inlet of the negative pressure device 5 is provided at the ventilation groove 43;

[0046] Reference Fig.11 The mold 4 is provided with a U-shaped groove 42, and the U-shaped groove 42 is provided with a processing window 421;

[0047] The mold 4 includes a pressing plate 45 and a bottom plate 44 and a mold base 46 fixedly connected to each other. The mold base 46 is vertically arranged on the machine table 1. The pressing plate 45 is arranged on the front side of the bottom plate 44. The through groove 41 is arranged on the front side wall of the bottom plate 44. The U-shaped groove 42 and the processing window 421 are arranged on the pressing plate 45.

[0048] Reference Fig.12 The adjustment mechanism 6 includes a fixed plate 61, a movable plate 62 and a hand wheel 63. The movable plate 62 is arranged on the front side of the pressure plate 45 and has a certain distance from the pressure plate 45. The fixed plate 61 is arranged on the front side of the movable plate 62. A threaded adjustment column 65 is fixedly connected to the hand wheel 63. A nut is provided in the fixed plate 61. The threaded adjustment column 65 is transmission-connected to the nut. The threaded adjustment column 65 is rotationally connected to the movable plate 61. A spring 64 is provided between the movable plate 62 and the pressure plate 45.

[0049] Reference Fig.13 The through groove 41 and the vent groove 43 are arranged on the bottom plate 44, the U-shaped groove 42 is arranged on the pressing plate 45, the U-shaped groove 42 is located on the side 8 of the through groove 41, the tool 31 is located at the U-shaped groove 42, the tool 31 is partially arranged at the processing window 421, the vent groove 43 is located on the side of the through groove 41 away from the tool 31, and the vent hole 431 is arranged on the vent groove 43, and the vent hole 431 is communicated with the through groove 41. The tool 31 is gourd-shaped or spindle-shaped.

[0050] Reference Fig.14The pressure plate 45 includes a first pressure plate 451, a second pressure plate 452 and a third pressure plate 453, and the rear side walls of the first pressure plate 451, the second pressure plate 452 and the third pressure plate 453 are arranged in sequence from top to bottom; the first pressure plate 451, the second pressure plate 452 and the third pressure plate 453 are all slidably matched with the threaded adjustment column 65, and the front end of the first pressure plate 451, the front end of the second pressure plate 452 and the front side of the third pressure plate 453 are all provided with a spring 64.

[0051] The ultra-thin metal sheet 2 is set in the through groove 41, and the distance between the movable plate 62 and the fixed plate 62 is adjusted by rotating the hand wheel 63, thereby adjusting the distance between the movable plate 62 and the pressing plate 45, so that the pressing plate 45 limits and squeezes the ultra-thin metal sheet 2 to prevent the ultra-thin metal sheet 2 from falling off from the through groove 41 and preventing the ultra-thin metal sheet 2 from vibrating; the negative pressure device 5 is started to evacuate the air in the ventilation groove 43 to form a negative pressure in the ventilation groove 43, and the ultra-thin metal sheet 2 will be adsorbed at the ventilation hole 431, which can also assist in positioning the ultra-thin metal sheet 2; the tool 31 extends into the U-shaped groove 42, and the tool 31 partially passes through the processing window 421 and abuts against the ultra-thin metal sheet 2 to process the ultra-thin metal sheet 2. After the cutting of the tool 31, the ultra-thin metal sheet with uneven thickness is processed. The following special-shaped processing of the ultra-thin metal sheet is similar, so it will not be repeated below.

[0052] Embodiment 2

[0053] This embodiment provides another ultra-thin metal sheet. The difference between this embodiment and the first embodiment is that the upper surface of the third portion 31 is a concave arc surface.

[0054] Embodiment 3

[0055] This embodiment provides an ultra-thin metal sheet tube, including the ultra-thin metal sheet shown in the first embodiment, the ultra-thin metal sheet is rolled and welded in turn to form a tube as shown in the following figure: Figure 3 The ultra-thin metal sheet tube shown in FIG. The bottom surface is the flat surface of the ultra-thin metal sheet, that is, the unprocessed surface.

[0056] The applicant's Chinese patent publication number CN219052473U has disclosed a production line for ultra-fine seamless metal tubes and a process for making tubes from special-shaped ultra-thin sheets, which will not be described in detail in this application.

[0057] The ultra-thin metal sheet tube of the present application is not formed by stretching, and its material does not undergo material changes in its extension direction. The ultra-thin metal sheet tube of the present application is strong and not easy to break;

[0058] The ultra-thin metal sheet tube of the present application is made of a special-shaped ultra-thin metal sheet with uneven thickness, which forms a smaller contact surface at one end of the tube and can complete work with extremely high precision. The smaller contact surface also represents a higher intensity output under the same conditions.

[0059] Embodiment 4

[0060] This embodiment provides an ultra-thin metal sheet tube, which is different from the third embodiment in that this embodiment is made of the ultra-thin metal sheet of the second embodiment.

[0061] Embodiment 5

[0062] This embodiment provides an ultra-thin metal sheet, including two ultra-thin metal sheets of the first embodiment, the first parts 11 of the two are directly connected, the two third parts 31 are symmetrically arranged on both sides of the two second parts 21, and the two first parts 11 are symmetrically arranged on both sides of the two third parts 31, forming a Figure 4 The ultra-thin metal sheet shown is formed in one step by the aforementioned processing equipment.

[0063] The ultra-thin metal sheet tube made of the ultra-thin metal sheet of this embodiment is as follows: Figure 5 As shown, it can be cut again to form Figure 6 The needle-shaped ultra-thin metal sheet tube shown.

[0064] Embodiment 6

[0065] The difference between this embodiment and the fifth embodiment is that the two ultra-thin metal sheets included in the ultra-thin metal sheets of this embodiment are the sheets shown in the second embodiment, such as Figure 7 shown.

[0066] The ultra-thin metal sheet tube made of the ultra-thin metal sheet of this embodiment is as follows: Figure 8 As shown, it can be cut again to form Fig. 9 The needle-shaped ultra-thin metal sheet tube shown.

[0067] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An ultra-thin metal sheet, comprising a sheet body, characterized in that: The sheet body includes a first part and a second part, the thickness of the first part is greater than that of the second part, and a third part is transitioned between the first part and the second part. The thickness of the third part is uneven, and the thickness of the third part changes gradually from one end connected to the first part to the other end connected to the second part.

2. The ultra-thin metal sheet according to claim 1, characterized in that: The first portion has a uniform thickness, the second portion has a uniform thickness, and bottom surfaces of the first portion, the second portion, and the third portion are coplanar.

3. The ultra-thin metal sheet according to claim 1, characterized in that: The thickness of the first portion is 0.05 mm to 0.5 mm.

4. The ultra-thin metal sheet according to claim 1, characterized in that: The thickness of the second portion is 0.01 mm to 0.3 mm.

5. The ultra-thin metal sheet according to claim 4, characterized in that: The thickness of the second portion is 0.02 mm to 0.3 mm.

6. The ultra-thin metal sheet according to claim 5, characterized in that: The thickness of the second portion is 0.02-0.2 mm.

7. The ultra-thin metal sheet according to claim 1, characterized in that: The upper surface of the third portion is a flat surface.

8. The ultra-thin metal sheet according to claim 1, characterized in that: The upper surface of the third portion is a concave arc surface.

9. The ultra-thin metal sheet according to claim 1, characterized in that: The number of the first part, the second part and the third part are two, the two second parts are directly connected, the two third parts are symmetrically arranged on both sides of the two second parts, and the two first parts are symmetrically arranged on both sides of the two third parts.

10. An ultra-thin metal sheet tube, characterized in that: The ultra-thin metal sheet tube is formed by rolling and welding the ultra-thin metal sheet according to any one of claims 1 to 8 in sequence.

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