A production line and a production method for manufacturing ultra-fine seamless metal pipes

Abstract

The present application relates to the field of extrusion molding, and particularly to a production line and a production method for manufacturing ultra-fine seamless metal pipes. The production line comprises a feeding mechanism, the feeding mechanism comprising a first rack and a second rack, the first rack being used for releasing a metal coil, and the second rack being used for winding the metal coil; a first cutting mechanism, which is arranged between the first rack and the second rack, and is used for cutting out hollowed-out areas on the metal coil, the metal coil raw material between adjacent hollowed-out areas being a pipe winding raw material; an extrusion mechanism, which is arranged between the first cutting mechanism and the second rack, and is used for winding the pipe winding raw material into an ultra-fine metal pipe; a welding mechanism, which is arranged between the extrusion mechanism and the second rack, and is used for welding the gaps on the side wall of the ultra-fine metal pipe to form an ultra-fine seamless metal pipe; and a second cutting mechanism, which is arranged between the welding mechanism and the second rack, and is used for cutting the ultra-fine seamless metal pipe from the metal coil. The production line for manufacturing ultra-fine seamless metal pipes has the advantage of high production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of extrusion molding, in particular to a production line and a production method for manufacturing ultra-fine seamless metal pipes. BACKGROUND

[0002] Ultra-fine seamless metal pipes are precision parts with a wide range of applications, such as medical puncture, which can assist in minimally invasive surgery. The existing CN212821813U is a patent applied by the applicant in 2020, which uses injection molding method to manufacture ultra-fine seamless metal pipes. However, the injection molding method for producing ultra-fine seamless metal pipes requires heating metal powder, injection molding, mold cooling forming and other processes, and it takes a long time to produce each mold product, which has the problem of low production efficiency. SUMMARY

[0003] To solve the above technical problems, the purpose of the present application is to provide a production line and a production method for manufacturing ultra-fine seamless metal pipes, which have high production efficiency.

[0004] The technical solution adopted by the present application to solve the problem is: a production line for manufacturing ultra-fine seamless metal pipes, comprising:

[0005] A production line for manufacturing ultra-fine seamless metal pipes for processing metal coils, comprising: a feeding mechanism, the feeding mechanism comprising a first rack and a second rack, the first rack being used to release the metal coil, and the second rack being used to wind the metal coil; a first cutting mechanism arranged between the first rack and the second rack, used to cut out hollowed-out areas on the metal coil, and the metal coil raw material between adjacent hollowed-out areas being a pipe raw material; an extrusion mechanism arranged between the first cutting mechanism and the second rack, used to roll the pipe raw material into an ultra-fine metal pipe; a welding mechanism arranged between the extrusion mechanism and the second rack, used to weld the gaps on the side wall of the ultra-fine metal pipe to form an ultra-fine seamless metal pipe; and a second cutting mechanism arranged between the welding mechanism and the second rack, used to cut the ultra-fine seamless metal pipe from the metal coil.

[0006] The production line for manufacturing ultra-fine seamless metal pipes uses metal coils as raw materials and can produce continuously. When the width of the metal coil is large enough, the number of hollowed-out areas distributed on its width can be increased, and the processing capacity of each station can be increased, such as increasing the number of cutting tools of the first cutting mechanism, increasing the number of welding guns of the welding mechanism, etc., to increase the production.

[0007] As a further improvement of the above technical solution, the feeding mechanism further comprises a feeding roller group and a pulling mechanism; the feeding roller group is arranged between the first rack and the first cutting mechanism; the pulling mechanism is arranged on the left side of the second rack, and is used for clamping the metal coil and pulling the metal coil to the right; the sorting mechanism is arranged between the second cutting mechanism and the pulling mechanism, and is used for sorting the ultra-fine seamless metal pipe. The feeding roller group is used for providing power for releasing the metal coil, and the pulling mechanism is used for providing power for winding the metal coil.

[0008] As a further improvement of the above technical solution, a positioning feature processing mechanism is further arranged between the first rack and the first cutting mechanism, and is used for processing positioning features on the metal coil. The positioning feature processing mechanism can be a laser engraving mechanism or a stamping mechanism.

[0009] As a further improvement of the above technical solution, the positioning feature processing mechanism is a punching mechanism, which can punch a plurality of positioning features arranged in front and back on the metal coil; the first cutting mechanism, the extrusion mechanism, the welding mechanism and the second cutting mechanism all include positioning columns, which can be inserted downward into the positioning features after the metal coil moves a certain distance to the right. By using the positioning columns to cooperate with the positioning features, the metal coil can be positioned before processing, thereby ensuring the processing accuracy.

[0010] As a further improvement of the above technical solution, the extrusion mechanism comprises a pre-pressing mechanism and a forming mechanism, the pre-pressing mechanism is used for extruding the pipe material into a strip-shaped blank with a U-shaped cross section, and the forming mechanism is used for extruding the strip-shaped blank into an ultra-fine metal pipe with a circular or elliptical cross section.

[0011] As a further improvement of the above technical solution, the pre-pressing mechanism comprises a pre-pressing upper die, a pre-pressing core and a pre-pressing lower die, a pre-pressing cavity is arranged in the pre-pressing lower die, the lower end of the pre-pressing upper die moves downward and abuts against the pipe material on the pre-pressing core, then the pre-pressing lower die is lifted upward by a certain distance, and the pipe material is extruded into a strip-shaped blank with a U-shaped cross section by the inner wall of the pre-pressing cavity; the forming mechanism comprises a forming upper die and a forming lower die, the forming upper die and the forming lower die can move up and down relative to each other to extrude the strip-shaped blank into an ultra-fine metal pipe; the number of the pre-pressing upper die, the pre-pressing core, the pre-pressing lower die, the forming upper die and the forming lower die is two or more; a plurality of pre-pressing upper dies are arranged in front and back, a plurality of pre-pressing cores are arranged in front and back, a plurality of pre-pressing lower dies are arranged in front and back, a plurality of forming upper dies are arranged in front and back, and a plurality of forming lower dies are arranged in front and back. This technical solution can simultaneously form a plurality of ultra-fine seamless metal pipes on the width of the metal coil.

[0012] As a further improvement of the above technical solution, the second cutting mechanism comprises a plurality of cutting tools arranged along the front-rear direction, the plurality of cutting tools are arranged front and rear and can simultaneously move downward to cut the ultra-fine metal pipe.

[0013] A production method of an ultra-fine seamless metal pipe, characterized in that it comprises the following steps:

[0014] S1, conveying a metal coil;

[0015] S3, cutting off the sheet-shaped waste material on the metal coil while forming hollowed-out areas on the metal coil, and forming a pipe raw material between adjacent hollowed-out areas;

[0016] S4, extruding the pipe raw material into an ultra-fine metal pipe;

[0017] S5, welding the ultra-fine metal pipe, and welding the gap on the side wall of the ultra-fine metal pipe to form an ultra-fine seamless metal pipe;

[0018] S6, cutting off the ultra-fine seamless metal pipe from the metal coil.

[0019] As a further improvement of the above technical solution, S1 and S3 further comprise: S2, processing positioning features on the metal coil.

[0020] As a further improvement of the above technical solution, S6 further comprises: S7, after visual inspection, the ultra-fine seamless metal pipe is picked up from the metal coil by the equipment and collected separately.

[0021] The beneficial effects of the present application are: continuous forming, and a wider metal coil can be used as raw material, and multiple ultra-fine seamless metal pipes can be formed at one time. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be further explained and described in conjunction with the accompanying drawings and specific embodiments.

[0023] Figure 1 is a front view of the production line for manufacturing the ultra-fine seamless metal pipe of the present application;

[0024] Figure 2 is an ultra-fine seamless metal pipe;

[0025] Figure 3 is an embodiment of a metal coil;

[0026] Figure 4 is Figure 3 is a schematic view of the metal coil after processing positioning features and hollowed-out areas;

[0027] Figure 5 is another embodiment of a metal coil;

[0028] Figure 6 is Figure 5 a schematic view of the metal coil after the positioning features and the cut-out areas have been machined;

[0029] Figure 7 is a right side view of the feed roller set;

[0030] Figure 8 is Figure 7 an enlarged view of section A;

[0031] Figure 9 is a top view of the feed roller set;

[0032] Figure 10 is a right side view of the positioning feature machining mechanism;

[0033] Figure 11 is Figure 10 an enlarged view of section B;

[0034] Figure 12 is a right side view of the first cutting mechanism;

[0035] Figure 13 is Figure 12 an enlarged view of section C;

[0036] Figure 14 is a right side view of the pre-press mechanism;

[0037] Figure 15 is a schematic view of the pre-press mechanism before pre-pressing;

[0038] Figure 16 is a schematic view of the pre-press mechanism at the start of pre-pressing;

[0039] Figure 17 is a schematic view of the pre-press mechanism during pre-pressing;

[0040] Figure 18 is a schematic view of the pre-press mechanism at the reset of the pre-press upper die;

[0041] Figure 19 is a schematic view of the pre-press mechanism at the reset of the pre-press die core;

[0042] Figure 20 is a right side view of the forming mechanism;

[0043] Figure 21 is a schematic view of the forming mechanism before forming;

[0044] Figure 22 is a schematic view of the forming mechanism during forming;

[0045] Figure 23 is a schematic view of the forming mechanism at the completion of forming;

[0046] Figure 24 is a right view of the welding mechanism;

[0047] Figure 25 is an enlarged view of D part of Figure 24

[0048] Figure 26 is a right view of the second cutting mechanism;

[0049] Figure 27 is an enlarged view of E part of Figure 26

[0050] Figure 28 is a right view of the structure shown in E part.

[0051] In the figure: 10-metal coil, 101-positioning feature, 102-hollow area, 103-tube raw material, 104-strip blank, 105-ultra-fine metal tube, 106-ultra-fine seamless metal tube, 11-first rack, 12-second rack, 13-feeding roller group, 14-feeding groove, 15-pulling mechanism, 3-positioning feature processing mechanism, 4-first cutting mechanism, 50-extruding mechanism, 51-pre-pressing mechanism, 511-pre-pressing upper die, 512-pre-pressing die core, 513-pre-pressing lower die, 52-molding mechanism, 521-molding upper die, 522-molding lower die, 6-welding mechanism, 7-vision detection mechanism, 8-second cutting mechanism, 81-cutting tool, 91-positioning column, 92-upper pressing plate. DETAILED DESCRIPTION

[0052] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with figures, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0053] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the present application.

[0054] ​​In the description of the present application, the meaning of one or more is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features. In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0055] Referring to Figures 1-28 A production line for manufacturing ultra-fine seamless metal pipes is used to process a metal coil 10.

[0056] Referring to Figure 1 The production line for manufacturing ultra-fine seamless metal pipes comprises, in sequence, a first material rack 11, a feeding roller set 13, a positioning feature processing mechanism 3, a first cutting mechanism 4, an extruding mechanism 50, a welding mechanism 6, a second cutting mechanism 8, a sorting mechanism, a pulling mechanism, and a second material rack 12. The extruding mechanism 50 comprises a pre-pressing mechanism 51 and a forming mechanism 52.

[0057] Figure 2 The present application is an ultra-fine seamless metal pipe product processed by the production line for manufacturing ultra-fine seamless metal pipes. Figure 3 Or Figure 5 The raw material processed by the present application is a metal coil 10 as shown in

[0058] Referring to Figure 4 The metal coil 10 of Figure 3 is shown in the schematic view after being processed with positioning features 101 and hollowed-out areas 102.

[0059] Referring to Figure 6 The metal coil 10 of Figure 5 is shown in the schematic view after being processed with positioning features 101 and hollowed-out areas 102.

[0060] Referring to Figures 7-9 The feeding roller set 13 is arranged between the first material rack 11 and the first cutting mechanism 4. The feeding roller set 13 comprises two feeding rollers arranged vertically, and a material groove 14 is arranged on the lower feeding roller. The width of the material groove 14 is consistent with the width of the metal coil 10. The feeding roller set 13 is driven to rotate by a motor, thereby conveying the metal coil 10 clamped in the feeding roller set 13 to the right.

[0061] Referring to Figure 10 and Figure 11The positioning feature processing mechanism 3 is used for processing the positioning features 101 on the metal coil 10. The positioning feature processing mechanism 3 is a punching mechanism, which can punch a plurality of positioning features 101 arranged in front and back on the metal coil 10. The punching mechanism can adopt a conventional punching device, including a punching machine table and an upper pressing plate 92 and a punching tool provided on the punching machine table. The upper pressing plate 92 is driven by a motor or other power mechanism to press the metal coil 10 tightly, and then the punching tool is used to process a through hole on the metal coil 10 as the positioning feature 101. Three or more punching tools arranged in front and back are provided on the punching machine table, which can simultaneously form three or more positioning features 101 in the width direction of the metal coil 10.

[0062] With reference to Figure 12 And Figure 13 The first cutting mechanism 4 is used for cutting the hollowed-out areas 102 on the metal coil 10. The raw material of the metal coil 10 between adjacent hollowed-out areas 102 is the pipe raw material 103. The machine table of the first cutting mechanism 4 is provided with a positioning column and an upper pressing plate 92. The metal coil 10 is positioned by the mutually matched positioning column 91 and the positioning feature 101. The punching tool of the first cutting mechanism 4 is used to cut off the excess material of the metal coil 10 to form the hollowed-out area 102. Two or more punching tools arranged in front and back are provided on the first cutting mechanism 4, which can simultaneously form two or more hollowed-out areas 102 arranged in front and back. The punching tool, the positioning column 91 and the upper pressing plate 92 are all driven downward and reset by the power mechanism.

[0063] With reference to Figure 14 The pre-pressing mechanism 51 includes a pre-pressing upper die 511, a pre-pressing die core 512 and a pre-pressing lower die 513. The pre-pressing lower die 513 is provided with a pre-pressing die cavity, and the pre-pressing die core 512 is arranged in the pre-pressing die cavity.

[0064] With reference to Figures 15-19 After the metal coil 10 is sent into the pre-pressing mechanism 51, the metal coil 10 moves a certain distance to the right, and the positioning feature 101 moves directly below the positioning column 91. The positioning column 91 is driven downward by the power mechanism to be inserted into the positioning feature 101, thereby positioning the metal coil 10. Then the pre-pressing upper die 511 moves downward until the pipe raw material 103 is pressed tightly on the pre-pressing die core 512. Then the pre-pressing lower die 513 moves upward until the pipe raw material 103 is extruded by the inner wall of the pre-pressing die cavity to form a strip blank 104 with a U-shaped cross section. Then the positioning column 91, the pre-pressing upper die 511 and the pre-pressing lower die 513 are reset.

[0065] A plurality of pre-pressing upper dies 511 are arranged in front and back, a plurality of pre-pressing die cores 512 are arranged in front and back, and a plurality of pre-pressing lower dies 513 are arranged in front and back, thereby simultaneously forming a plurality of strip blanks 104 arranged in front and back.

[0066] With reference to Figure 20The forming mechanism 52 comprises a forming upper die 521 and a forming lower die 522. Referring to Figures 21-23 The forming lower die 522 is provided with a lower forming groove matched with the strip-shaped blank 104, and the forming upper die 521 is provided with an upper forming groove. The forming upper die 521 and the forming lower die 522 can move up and down relative to each other to embed the strip-shaped blank 104 into the lower forming groove and the upper forming groove and extrude the strip-shaped blank 104 into the ultra-fine metal pipe 105. After the metal coil 10 enters the forming mechanism 52, the positioning feature 101 moves directly below the positioning column 91, which is driven downward by the power mechanism to be inserted with the positioning feature 101, thereby positioning the metal coil 10. Then the power mechanism drives the forming upper die 521 and the forming lower die 522 to move closer to each other to extrude the strip-shaped blank 104 into the ultra-fine metal pipe 105. Then the positioning column 91, the forming upper die 521 and the forming lower die 522 are reset.

[0067] The number of the forming upper die 521 and the forming lower die 522 is more than two. The plurality of forming upper dies 521 are arranged in front and back, and the plurality of forming lower dies 522 are arranged in front and back.

[0068] Referring to Figure 24 The welding mechanism 6 is used to weld the gap on the side wall of the ultra-fine metal pipe 105 to form the ultra-fine seamless metal pipe 106. Referring to Figure 25 The machine table of the welding mechanism 6 is provided with a clamping block for clamping the ultra-fine metal pipe 105. After the welding head welds the gap on the ultra-fine metal pipe 105, the clamping block is loosened by the power mechanism of the welding mechanism 6 itself, so that the metal coil 10 can drive the ultra-fine seamless metal pipe 106 to move to the right.

[0069] Referring to Figure 26 The second cutting mechanism 8 is arranged between the welding mechanism 6 and the second rack 12, and is used to cut the ultra-fine seamless metal pipe 106 from the metal coil 10.

[0070] Referring to Figure 27 The second cutting mechanism 8 comprises a plurality of cutting tools 81 arranged in the front and back directions. The plurality of cutting tools 81 are arranged in front and back and can move downward at the same time to cut the ultra-fine seamless metal pipe 106, thereby cutting the ultra-fine seamless metal pipe 106 from the metal coil 10. The upper pressing plate 92 is arranged between the cutting tools 81. The upper pressing plate 92 and the cutting tools 81 are driven downward by the power mechanism of the second cutting mechanism 8, and the cutting tools 81 are further driven to cut the end of the ultra-fine seamless metal pipe 106.

[0071] It also comprises a sorting mechanism (not shown in the figure), which is used to sort the ultra-fine seamless metal pipe 106. Artificial, mechanical hand or other existing technologies can be used to sort the ultra-fine seamless metal pipe 106.

[0072] The pulling mechanism 15 is used for clamping the metal coil 10 and pulling the metal coil 10 to the right, and the pulling mechanism 15 can be a conveying belt or a conveying roller mechanism capable of gap conveying.

[0073] The application also provides a production method of the ultra-fine seamless metal pipe, comprising the following steps:

[0074] S1, conveying the metal coil 10;

[0075] S2, processing the positioning feature 101 on the metal coil 10.

[0076] S3, cutting off the sheet-shaped waste material on the metal coil 10 while forming the hollowed-out areas 102 on the metal coil 10, and forming the pipe raw material 103 between the adjacent hollowed-out areas 102;

[0077] S4, extruding the pipe raw material 103 into the ultra-fine metal pipe 105;

[0078] S5, welding the ultra-fine metal pipe 105, and welding the gaps on the side wall of the ultra-fine metal pipe 105 to form the ultra-fine seamless metal pipe 106;

[0079] S6, cutting off the ultra-fine seamless metal pipe 106 from the metal coil 10.

[0080] S7, visually detecting the ultra-fine seamless metal pipe 106, picking up the ultra-fine seamless metal pipe 106 from the metal coil 10 by the equipment and collecting the ultra-fine seamless metal pipe 106 separately.

[0081] The above is only the preferred embodiment of the application, and does not limit the patent scope of the application, and any equivalent structural transformation, direct or indirect application in other related technical fields under the inventive concept of the application and the content of the specification and drawings are included in the patent protection scope of the application.

Claims

1. A production line for manufacturing ultra-fine seamless metal tubes for processing a metal coil (10), characterized in that, The application relates to a production line for manufacturing ultra-fine seamless metal pipes. The production line comprises a feeding mechanism, a first cutting mechanism, an extruding mechanism, a welding mechanism and a second cutting mechanism. The feeding mechanism comprises a first rack (11) for releasing the metal coil (10) and a second rack (12) for winding the metal coil (10). The first cutting mechanism (4) is arranged between the first rack (11) and the second rack (12) and is used for cutting out hollowed-out areas (102) on the metal coil (10), and the metal coil (10) between adjacent hollowed-out areas (102) is a pipe raw material (103). The extruding mechanism (50) is arranged between the first cutting mechanism (4) and the second rack (12) and is used for rolling the pipe raw material (103) into an ultra-fine metal pipe (105). The welding mechanism (6) is arranged between the extruding mechanism (50) and the second rack (12) and is used for welding the gap on the side wall of the ultra-fine metal pipe (105) to form an ultra-fine seamless metal pipe (106). The second cutting mechanism (8) is arranged between the welding mechanism (6) and the second rack (12) and is used for cutting the ultra-fine seamless metal pipe (106) from the metal coil (10). The extruding mechanism (50) comprises a pre-pressing mechanism (51) and a forming mechanism (52), the pre-pressing mechanism (51) is used for extruding the pipe raw material (103) into a U-shaped strip blank (104), and the forming mechanism (52) is used for extruding the strip blank (104) into an ultra-fine metal pipe (105) with a circular or elliptical cross section.

2. The production line for manufacturing ultra-fine seamless metal pipes according to claim 1, wherein the feeding mechanism further comprises a feeding roller set (13) and a pulling mechanism (15). The feeding roller set (13) is arranged between the first rack (11) and the first cutting mechanism (4) and is used for pulling the metal coil (10) on the first rack (11) to the right. The pulling mechanism (15) is arranged on the left side of the second rack (12) and is used for clamping the metal coil (10) and pulling the metal coil (10) to the right. The production line further comprises a sorting mechanism arranged between the second cutting mechanism (8) and the pulling mechanism (15) and used for sorting the ultra-fine seamless metal pipes (106).

3. The production line for manufacturing ultra-fine seamless metal pipes according to claim 1, wherein a positioning feature processing mechanism (3) is further arranged between the first rack (11) and the first cutting mechanism (4) and is used for processing positioning features (101) on the metal coil (10).

4. The production line for manufacturing ultra-fine seamless metal pipes according to claim 3, wherein the positioning feature processing mechanism (3) is a punching mechanism capable of punching out a plurality of positioning features (101) arranged in front of and behind each other on the metal coil (10). ​ ​ The first cutting mechanism (4), the extruding mechanism (50), the welding mechanism (6) and the second cutting mechanism (8) all include positioning columns (91), which can be inserted downward into the positioning features (101) after the metal coil (10) moves a certain distance to the right.

5. The production line for manufacturing ultra-fine seamless metal pipes according to claim 1, characterized in that: The pre-pressing mechanism (51) includes a pre-pressing upper die (511), a pre-pressing die core (512) and a pre-pressing lower die (513), and the pre-pressing lower die (513) is provided with a pre-pressing die cavity, and the pre-pressing die core (512) is arranged in the pre-pressing die cavity; The lower end of the pre-pressing upper die (511) moves downward and abuts against the pipe raw material (103) on the pre-pressing die core (512), and then the pre-pressing lower die (513) is lifted upward by a certain distance, and the pipe raw material (103) is extruded by the inner wall of the pre-pressing die cavity into a strip-shaped blank (104) with a U-shaped cross section; The forming mechanism (52) includes a forming upper die (521) and a forming lower die (522), and the forming upper die (521) and the forming lower die (522) can move up and down relative to each other to extrude the strip-shaped blank (104) into an ultra-fine metal pipe (105); The number of the pre-pressing upper die (511), the pre-pressing die core (512), the pre-pressing lower die (513), the forming upper die (521) and the forming lower die (522) is more than two; A plurality of pre-pressing upper dies (511) are arranged in front of and behind each other, a plurality of pre-pressing die cores (512) are arranged in front of and behind each other, a plurality of pre-pressing lower dies (513) are arranged in front of and behind each other, a plurality of forming upper dies (521) are arranged in front of and behind each other, and a plurality of forming lower dies (522) are arranged in front of and behind each other.

6. The production line for manufacturing ultra-fine seamless metal pipes according to claim 1, characterized in that: The second cutting mechanism (8) includes a plurality of cutting tools (81) arranged in the front-rear direction, and the plurality of cutting tools (81) are arranged in front of and behind each other and can move downward at the same time to cut the ultra-fine metal pipe (105).

7. A method for producing an ultra-fine seamless metal pipe based on the production line for manufacturing an ultra-fine seamless metal pipe according to any one of claims 1 to 6, characterized by, The method comprises the following steps: S1, conveying the metal coil (10); S3, cutting off the sheet-shaped waste material on the metal coil (10) to form hollow areas (102) on the metal coil (10), and forming pipe raw materials (103) between adjacent hollow areas (102); S4, extruding the pipe raw material (103) into an ultra-fine metal pipe (105); S5, welding the ultra-fine metal pipe (105), and welding the gaps on the side wall of the ultra-fine metal pipe (105) to form an ultra-fine seamless metal pipe (106); S6, cutting off the ultra-fine seamless metal pipe (106) from the metal coil (10).

8. The production method of the ultra-fine seamless metal pipe according to claim 7, characterized in that, S1 and S3 further comprise: S2, processing the positioning features (101) on the metal coil (10).

9. The production method of the ultra-fine seamless metal pipe according to claim 8, characterized in that, S6 is followed by S7, picking up the ultra-fine seamless metal tube (106) from the metal web (10) and collecting it separately after visually inspecting the ultra-fine seamless metal tube (106).

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