Machining device for stainless steel welded pipe

Abstract

The invention relates to the field of welded pipe machining, in particular to a stainless steel welded pipe machining device which comprises a laser cutting machine, a pipe conveying frame and a mounting base. The pipe conveying frame used for conveying the welded pipe is located between the laser cutting machine used for cutting the welded pipe and the installation base. The device further comprises a first telescopic driving part. A plurality of first telescopic driving parts are installed on the installation base, the telescopic ends of all the first telescopic driving parts are jointly connected with a fixed disc, the first telescopic driving parts are used for driving the fixed disc to move, and a main air bag is arranged on the side, away from the first telescopic driving parts, of the fixed disc; the main air bag is in a circular ring shape, the side, away from the fixed disc, of the main air bag is a conical surface, and a dust suction pipe is arranged in the middle of the fixed disc in a penetrating mode and penetrates through the main air bag. Sputtered cutting chippings are guided through the conical surface of the main air bag, and even if the cutting chippings are sputtered to the bottom of the plugging surface of the main air bag, the cutting chippings can be sucked.

Description

Technical Field

[0001] The invention relates to the field of welded pipe processing, in particular to a processing device for a stainless steel welded pipe. Background Art

[0002] Stainless steel welded pipe, referred to as welded pipe, is usually made of steel or steel strip that is curled and formed by a machine unit and a mold and then welded. In the subsequent processing of the welded pipe, the formed welded pipe needs to be cut according to the size required by the customer.

[0003] One of the methods of cutting welded pipes in the prior art is to use a laser cutting machine for cutting. During cutting, it is necessary to collect the cutting debris in the pipe. For example, the invention patent with publication number CN118989571A discloses a pipe cutting device for mechanical processing. When the cutting debris is sucked, the device seals the airbag to enhance the suction force and improve the debris collection effect. However, it still has defects: the side of the sealing airbag facing the cutting position is flat, and the suction pipe port is installed in the middle position of the airbag plane. The cutting debris has the characteristic of sputtering. When the debris sputters to the side position deviating from the suction pipe port, a suction dead angle is likely to occur, resulting in the sputtered cutting debris remaining in the pipe. Summary of the invention

[0004] In order to overcome the disadvantage in the prior art that the debris sputtered into the welded pipe during laser cutting cannot be completely collected, the present invention provides a processing device for a stainless steel welded pipe.

[0005] The technical implementation scheme of the present invention is: a processing device for stainless steel welded pipes, comprising a laser cutting machine, a pipe conveying rack and a mounting seat; the pipe conveying rack for conveying welded pipes is located between the laser cutting machine for cutting welded pipes and the mounting seat; and also comprises a telescopic driving member; a plurality of telescopic driving members are mounted on the mounting seat, and the telescopic ends of all telescopic driving members are commonly connected to a fixed disc, and the telescopic driving member is used to drive the fixed disc to move, and a main air bag is arranged on the side of the fixed disc away from the telescopic driving member, the main air bag is annular and the side of the main air bag away from the fixed disc is a conical surface, and a dust suction pipe is arranged through the middle of the fixed disc, and the dust suction pipe passes through the main air bag.

[0006] Furthermore, a plurality of telescopic driving members 2 are arranged on the fixed disc, the telescopic ends of all the telescopic driving members 2 pass through the fixed disc and are commonly connected to a guide plate, the guide plate is in a circular trumpet shape and has a through circular hole in the middle with the same diameter as the pipe mouth of the dust suction pipe, and the guide plate is located on one side of the conical surface of the main airbag.

[0007] Furthermore, a circular trumpet-shaped space is formed between the guide plate and the main airbag, and the outer diameter of the guide plate is smaller than the outer diameter of the main airbag.

[0008] Furthermore, the guide plate is made of high temperature resistant material.

[0009] Furthermore, the pipe conveying rack is composed of two electric conveying rollers distributed up and down, and the welded pipe is conveyed by the two electric conveying rollers.

[0010] Furthermore, two auxiliary airbags are symmetrically arranged on the conical surface of the main airbag, and the two auxiliary airbags are located on the left and right sides of the space between the main airbag and the guide plate.

[0011] Furthermore, the upper surfaces of the two auxiliary airbags are both inclined and distributed in an inverted figure eight shape.

[0012] Furthermore, the main airbag has an outer annular surface, and the diameter of the outer annular surface at a side away from the fixed disk is larger than the diameter of the outer annular surface at a side close to the fixed disk.

[0013] Furthermore, when the auxiliary airbag is squeezed by the guide plate, the gas in the auxiliary airbag will be squeezed into the main airbag, and the outer annular surface will expand to be close to the inner wall of the welded pipe.

[0014] Furthermore, the diameter of the fixed disc is equal to the diameter of the outer annular surface of the main airbag close to the fixed disc.

[0015] The present invention has the following advantages: the present invention guides the sputtered cutting debris through the conical surface of the main airbag, and even if the cutting debris is sputtered to the bottom of the main airbag blocking surface, it can be sucked out;

[0016] The present invention forms a trumpet-shaped small space between the guide plate and the main airbag, and the outer diameter of the guide plate is smaller than the outer diameter of the main airbag, so that when the conical surface of the main airbag moves the welding debris gathered on the inner wall of the welding pipe, the suction effect of the dust suction pipe on the moved and gathered welding debris can be enhanced through the small space formed between the guide plate and the main airbag;

[0017] The present invention designs the outer annular surface of the main airbag to be inclined, that is, the diameter of the outer annular surface on the side away from the fixed disk is larger than the diameter of the outer annular surface on the side close to the fixed disk, so the outer annular surface of the main airbag only contacts the inner wall of the weld pipe on one side. This does not affect the cleaning of welding debris and can also reduce the friction of the main airbag when moving inside the weld pipe. During laser cutting, the outer annular surface of the main airbag is completely pressed against the inner wall of the weld pipe, and the outer annular surface is subjected to the gas pressure inside the main airbag at this time, so as to achieve internal support and fixation of the inner wall of the weld pipe, thereby further ensuring the laser cutting accuracy of the weld pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1What is shown is a three-dimensional structural schematic diagram of a processing device for a stainless steel welded pipe of the present invention;

[0019] Figure 2 What is shown is a schematic diagram of the combined three-dimensional structure of the fixed disc, the dust suction pipe and the main air bag of the present invention;

[0020] Figure 3 What is shown is a schematic diagram of the combined three-dimensional structure of the main airbag and the guide plate of the present invention;

[0021] Figure 4 Shown is a cross-sectional view of the main airbag of the present invention;

[0022] Figure 5 Shown is an exploded view of the fixed disc, dust suction pipe, main air bag and guide plate assembly of the present invention.

[0023] The meanings of the reference numerals in the figure are: 1-laser cutting machine, 2-pipe conveying rack, 3-mounting seat, 4-telescopic driving member 1, 5-fixed disc, 6-dust suction pipe, 7-main airbag, 71-conical surface, 72-auxiliary airbag, 73-outer annular surface, 8-telescopic driving member 2, 9-guide plate. DETAILED DESCRIPTION

[0024] Reference to an embodiment herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] Example 1

[0026] A processing device for stainless steel welded pipe, such as Figure 1-Figure 5 As shown, it includes a laser cutting machine 1, a pipe conveying rack 2 and a mounting seat 3; the laser cutting machine 1, the pipe conveying rack 2 and the mounting seat 3 are installed on a workbench, and the pipe conveying rack 2 can be set in multiple groups according to the specific length of the welded pipe; the pipe conveying rack 2 is located between the laser cutting machine 1 and the mounting seat 3;

[0027] It also includes a telescopic driving member 4; two telescopic driving members 4 are installed on the mounting seat 3, the telescopic driving member 4 is an electric multi-stage telescopic rod, and the telescopic ends of all the telescopic driving members 4 are commonly connected to a fixed disc 5, and a main air bag 7 is arranged on the side of the fixed disc 5 away from the telescopic driving member 4, the main air bag 7 is annular and the side of the main air bag 7 away from the fixed disc 5 is a conical surface 71, and a dust suction pipe 6 is arranged through the middle of the fixed disc 5, the dust suction pipe 6 is connected to an external vacuum cleaner through a telescopic pipe, and the external vacuum cleaner adopts a model that can withstand high-temperature slag, the dust suction pipe 6 passes through the main air bag 7, and the air inlet nozzle of the main air bag 7 passes through the fixed disc 5.

[0028] Two telescopic driving members 28 are arranged on the fixed disc 5, and the telescopic driving members 28 are electric push rods. The telescopic ends of all the telescopic driving members 28 pass through the fixed disc 5 and are commonly connected to a guide plate 9. The guide plate 9 is a circular trumpet shape and a through circular hole with the same diameter as the pipe mouth of the dust suction pipe 6 is opened in the middle. The guide plate 9 is located on one side of the conical surface 71 of the main airbag 7.

[0029] A circular trumpet-shaped space is formed between the guide plate 9 and the main airbag 7, and the outer diameter of the guide plate 9 is smaller than the outer diameter of the main airbag 7, so as to ensure that the weld debris that is moved and gathered enters the circular trumpet-shaped space.

[0030] The guide plate 9 is made of high temperature resistant material to reduce the damage caused by high temperature slag during laser cutting.

[0031] The pipe conveying rack 2 is composed of two electric conveying rollers distributed up and down, and the welded pipe is conveyed by the two electric conveying rollers.

[0032] The structure of the laser cutting machine 1 is common knowledge and will not be described in detail here.

[0033] In this embodiment, the welded pipe is placed on the pipe conveying rack 2, cut by the laser cutting machine 1, and conveyed by the pipe conveying rack 2, and cut into multiple pipes of specified sizes by the laser cutting machine 1.

[0034] After the welding pipe is placed, the fixed disc 5 is pushed into the welding pipe by the telescopic driving member 4, so that the main airbag 7 moves to the side of the welding pipe to be cut. Since the dust suction pipe 6 is connected to the external vacuum cleaner through the telescopic pipe, the telescopic pipe is extended when the dust suction pipe 6 moves with the fixed disc 5. When the laser cutting machine 1 cuts the welding pipe, the external vacuum cleaner generates a suction force, and the cutting debris is sucked into the external vacuum cleaner through the dust suction pipe 6. At this time, since the outer diameter of the main airbag 7 is equal to the inner diameter of the welding pipe, the main airbag 7 cuts off the inside of the welding pipe, thereby enhancing the suction force at the dust suction pipe 6.

[0035] Furthermore, since the dust suction tube 6 is located in the middle of the main air bag 7, considering that if the sealing surface of the main air bag 7 is a plane, it is easy for the cutting debris to splash to the bottom of the sealing surface of the main air bag 7, and this position deviates from the suction path of the dust suction tube 6, which will form a suction dead angle, the side of the main air bag 7 away from the fixed disk 5 is designed as a conical surface 71, that is, the sealing surface of the main air bag 7 is a conical surface 71, and the nozzle of the dust suction tube 6 is located at the end with a small diameter of the conical surface 71. In this way, the splashed cutting debris can be guided by the conical surface 71 of the main air bag 7, and even if the cutting debris splashes to the bottom of the sealing surface of the main air bag 7, it can be sucked up.

[0036] Furthermore, considering that welding debris will remain on the inner wall of the pipe when the welded pipe is formed, if it is not removed, it will affect the subsequent use of the welded pipe or require additional cleaning steps. Therefore, before laser cutting, the conical surface 71 of the main airbag 7 is moved in the welded pipe to move the welding debris, and at the same time, the residual welding debris is sucked and collected with the suction of the external vacuum cleaner. At this time, a guide plate 9 is added, so that the guide plate 9 is located on one side of the conical surface 71 of the main airbag 7. At this time, a trumpet-shaped small space is formed between the guide plate 9 and the main airbag 7, and the outer diameter of the guide plate 9 is smaller than the outer diameter of the main airbag 7. When the conical surface 71 of the main airbag 7 moves the welding debris gathered on the inner wall of the welded pipe, the suction effect of the vacuum tube 6 on the moved and gathered welding debris can be enhanced through the small space formed between the guide plate 9 and the main airbag 7.

[0037] At the same time, the circular trumpet-shaped guide plate 9 can also guide the cutting debris during laser cutting, and the guide plate 9 made of high-temperature resistant material can also reduce the impact damage of the high-temperature slag sputtered during laser cutting on the main airbag 7, thereby playing a protective role.

[0038] Example 2

[0039] On the basis of Example 1, Figure 4-Figure 5 As shown, two auxiliary airbags 72 are symmetrically arranged on the conical surface 71 of the main airbag 7 , and the two auxiliary airbags 72 are located on the left and right sides of the space between the main airbag 7 and the guide plate 9 .

[0040] The upper surfaces of the two auxiliary airbags 72 are both inclined and distributed in an inverted eight-shaped shape.

[0041] In this embodiment, by providing two auxiliary air bags 72, the circular trumpet-shaped space between the guide plate 9 and the main air bag 7 is further reduced, and the welding debris on the lower half of the inner wall of the welding pipe can be further moved and gathered to improve the suction efficiency. In addition, by designing the upper surfaces of the two auxiliary air bags 72 as inclined surfaces distributed in an inverted eight-shaped shape, the welding debris on the upper half of the inner wall of the welding pipe that is moved is received and guided, so that it can quickly reach the pipe mouth position of the dust suction pipe 6, so that the welding debris on the upper and lower parts can be quickly processed.

[0042] Example 3

[0043] On the basis of Example 2, Figure 4-Figure 5 As shown, the main airbag 7 has an outer annular surface 73 , and the diameter of the outer annular surface 73 at a side away from the fixed disc 5 is larger than the diameter of the outer annular surface 73 at a side close to the fixed disc 5 .

[0044] When the auxiliary airbag 72 is squeezed by the guide plate 9 , the gas in the auxiliary airbag 72 will be squeezed into the main airbag 7 , and the outer annular surface 73 will expand to fit closely against the inner wall of the welded pipe.

[0045] The diameter of the fixed disk 5 is equal to the diameter of the outer annular surface 73 of the main airbag 7 close to the fixed disk 5 . The fixed disk 5 can abut against the main airbag 7 to assist the guide plate 9 in squeezing the auxiliary airbag 72 .

[0046] In this embodiment, considering that the laser cutting machine 1 needs to perform multiple-section cutting on the same welding pipe, after the welding pipe is cut once, the telescopic driving member 4 is controlled to be telescopic so that the main airbag 7 moves to one side of the next cutting position in the welding pipe. If the outer wall surface of the main airbag 7 is close to the inner wall of the welding pipe, when the main airbag 7 moves in the welding pipe, the friction between the main airbag 7 and the welding pipe may cause the movement of the welding pipe position, resulting in the deviation of the next cutting position. Therefore, in order to solve the above problem, the outer annular surface 73 of the main airbag 7 is designed to be inclined, that is, the diameter of the outer annular surface 73 away from the fixed disk 5 is larger than the diameter of the outer annular surface 73 close to the fixed disk 5. Therefore, the outer annular surface 73 of the main airbag 7 only contacts the inner wall of the welding pipe on one side, which does not affect the realization of cleaning welding debris by moving, and can also reduce the friction of the main airbag 7 when it moves inside the welding pipe.

[0047] Furthermore, when the main airbag 7 is moved to clean the welding debris, a suction space is formed between the main airbag 7 and the guide plate 9. When the welding pipe is laser cut by the laser cutting machine 1, the suction space is not needed. Therefore, after the main airbag 7 cleans the welding debris and moves to the side of the welding pipe to be cut, the telescopic driving member 2 8 is controlled to drive the guide plate 9 to move closer to the main airbag 7, so that the guide plate 9 is close to the conical surface 71 of the main airbag 7, thereby eliminating the space between the main airbag 7 and the guide plate 9, and reducing the dispersion of the suction force at the dust suction pipe 6. When the guide plate 9 moves to stick to the conical surface 71, the auxiliary airbag 72 at the conical surface 71 will be squeezed by the guide plate 9, and the fixed disk 5 will cooperate to press against the side of the main airbag 7 away from the conical surface 71. At this time, the gas in the auxiliary airbag 72 will be squeezed into the main airbag 7, and the outer annular surface 73 of the main airbag 7 will further expand to fit closely to the inner wall of the welded pipe. The outer annular surface 73 of the main airbag 7 is completely pressed against the inner wall of the welded pipe, and the outer annular surface 73 is now subjected to the gas pressure inside the main airbag 7, so as to achieve internal support and fixation of the inner wall of the welded pipe, thereby further ensuring the accuracy of laser cutting of the welded pipe.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A processing device for a stainless steel welded pipe, comprising a laser cutting machine (1), a pipe conveying rack (2) and a mounting seat (3); the pipe conveying rack (2) for conveying the welded pipe is located between the laser cutting machine (1) for cutting the welded pipe and the mounting seat (3); Its characteristics are: It also comprises a telescopic driving member (4); a plurality of telescopic driving members (4) are mounted on the mounting seat (3); the telescopic ends of all the telescopic driving members (4) are commonly connected to a fixed disc (5); the telescopic driving member (4) is used to drive the fixed disc (5) to move; a main air bag (7) is arranged on a side of the fixed disc (5) away from the telescopic driving member (4); the main air bag (7) is annular and a side of the main air bag (7) away from the fixed disc (5) is a conical surface (71); a dust suction pipe (6) is arranged in a through-type manner in the middle of the fixed disc (5); the dust suction pipe (6) passes through the main air bag (7).

2. A processing device for a stainless steel welded pipe according to claim 1, characterized in that: A plurality of telescopic drive members (2) (8) are arranged on the fixed disc (5), the telescopic ends of all the telescopic drive members (2) (8) pass through the fixed disc (5) and are commonly connected to a guide plate (9), the guide plate (9) is in the shape of a circular trumpet and has a through circular hole in the middle thereof having the same diameter as the pipe opening of the dust suction pipe (6), the guide plate (9) being located on one side of the conical surface (71) of the main airbag (7).

3. A stainless steel welded pipe processing device according to claim 2, characterized in that: A circular trumpet-shaped space is formed between the guide plate (9) and the main airbag (7), and the outer diameter of the guide plate (9) is smaller than the outer diameter of the main airbag (7).

4. A processing device for a stainless steel welded pipe according to claim 2, characterized in that: The guide plate (9) is made of high temperature resistant material.

5. A processing device for a stainless steel welded pipe according to any one of claims 1 to 4, characterized in that: The pipe conveying frame (2) is composed of two electric conveying rollers distributed up and down, and the welded pipe is conveyed by the two electric conveying rollers.

6. A processing device for a stainless steel welded pipe according to claim 3, characterized in that: Two auxiliary airbags (72) are symmetrically arranged on the conical surface (71) of the main airbag (7), and the two auxiliary airbags (72) are located on the left and right sides of the space between the main airbag (7) and the guide plate (9).

7. A stainless steel welded pipe processing device according to claim 6, characterized in that: The upper surfaces of the two auxiliary air bags (72) are both inclined and are distributed in an inverted figure eight shape.

8. A processing device for a stainless steel welded pipe according to claim 6, characterized in that: The main airbag (7) has an outer annular surface (73), and the diameter of the outer annular surface (73) on a side away from the fixed disc (5) is larger than the diameter of the outer annular surface (73) on a side close to the fixed disc (5).

9. A processing device for a stainless steel welded pipe according to claim 8, characterized in that: When the auxiliary airbag (72) is squeezed by the guide plate (9), the gas in the auxiliary airbag (72) is squeezed into the main airbag (7), causing the outer annular surface (73) to expand until it is in close contact with the inner wall of the welded pipe.

10. A processing device for a stainless steel welded pipe according to claim 9, characterized in that: The diameter of the fixed disc (5) is equal to the diameter of the outer annular surface (73) of the main airbag (7) on a side close to the fixed disc (5).

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