Stable bending device for steel pipe machining

Abstract

The utility model provides a stable bending device for steel pipe machining, which relates to the technical field of steel pipe machining and comprises a steel pipe bending table, a steel pipe bending mechanism is arranged on the left side above the steel pipe bending table, and four bending table guide wheels are rotatably connected above the steel pipe bending table. A guide sliding groove with the section of a T-shaped structure is formed in the upper surface of the steel pipe bending table, a connecting column guide plate is slidably connected into the guide sliding groove, a rigid connecting column is fixedly connected to the upper portion of the connecting column guide plate, an expansion supporting sleeve is installed at the left end of the rigid connecting column, and the interior of a steel pipe is effectively supported through the expansion supporting sleeve. The steel pipe bending device can effectively avoid steel pipe indentation caused by non-uniform stress on the inner wall and lack of support in the pipe body in the steel pipe bending process, improves the success probability of steel pipe bending processing, and solves the problems that the steel pipe is easily indented and deformed in the bending process due to non-uniform stress on the pipe wall and lack of an effective support structure in the pipe body in the steel pipe bending process, and the bending quality of the steel pipe is influenced. And the attractiveness and the performance of the product are influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe processing, in particular to a stable bending device for steel pipe processing. Background Art

[0002] The bending of steel pipes is usually completed by special pipe bending machines, which apply bending force to the steel pipe to make it conform to the set angle for bending.

[0003] For thin-walled steel pipes for special applications (such as lightweight requirements), the bending process of the steel pipe is prone to cause concave deformation due to uneven force on the pipe wall and the lack of effective support structure inside the pipe body, affecting the appearance and performance of the product. Utility Model Content

[0004] The disclosed embodiments relate to a stable bending device for steel pipe processing, so as to solve the problem that for thin-walled steel pipes for special applications (such as lightweight requirements), the steel pipes are easily deformed inward during the bending process due to uneven force on the pipe wall and a lack of effective supporting structure inside the pipe body, thereby affecting the appearance and performance of the product.

[0005] In a first aspect of the present disclosure, a stable bending device for steel pipe processing is provided, which specifically includes: a steel pipe bending table, a steel pipe bending mechanism is provided on the upper left side of the steel pipe bending table, four bending table guide wheels are rotatably connected above the steel pipe bending table, a guide slide groove with a "T"-shaped cross-section is provided on the upper surface of the steel pipe bending table, a connecting column guide plate is slidably connected in the guide slide groove, a rigid connecting column is fixedly connected above the connecting column guide plate, an expansion support sleeve is installed on the left end of the rigid connecting column, the expansion support sleeve is made of rubber material, an inflation cavity is provided inside the expansion support sleeve, and an air supply channel is provided at the right end of the inflation cavity, an air pump is fixedly connected to the upper surface of the steel pipe bending table, and the output end of the air pump is connected to a gas supply hose, which is plugged into the gas supply channel.

[0006] In at least some embodiments, the left end of the rigid connecting column is fixedly connected to a docking column with a cylindrical structure, a column wedge ring is provided on the left edge of the outer wall of the docking column, the wedge surface of the column wedge ring faces to the left, and two through holes are opened inside the rigid connecting column.

[0007] In at least some embodiments, a lubricant storage container is fixedly connected above the steel pipe bending table, and a lubricant application pump is fixedly connected to the right end face of the rigid connecting column.

[0008] In at least some embodiments, the lubricant application pump input end is connected to the interior of the lubricant storage container via a lubricant delivery hose, and the lubricant delivery hose at the lubricant application pump output end passes through the central through-hole of the rigid connecting column.

[0009] In at least some embodiments, a docking socket is provided on the right end face of the expansion support sleeve, a limiting wedge ring is provided on the left edge of the inner wall of the docking socket, the docking post is inserted into the docking socket, and the post wedge ring fits with the limiting wedge ring.

[0010] In at least some embodiments, a lubricant channel is provided at the center of the expansion sleeve, and a diversion cavity is provided at the left end of the lubricant channel.

[0011] In at least some embodiments, diversion holes are radially distributed outside the diversion cavity, the diversion holes are connected to the outer surface of the expansion sleeve, and the right end of the lubricant channel is connected to a lubricant delivery hose.

[0012] The utility model provides a stable bending device for steel pipe processing, which has the following beneficial effects:

[0013] The steel pipe bending device in the present invention is specially used for thin-walled steel pipes with special requirements for products. Before the steel pipe is bent by the steel pipe bending mechanism, an expansion sleeve and a rigid connecting column are inserted into the inside of the steel pipe as support, and the expansion sleeve is moved to the bending part of the steel pipe, and high-pressure air is controlled to be input into the inside of the expansion sleeve. The expansion sleeve effectively supports the inside of the steel pipe, which can effectively avoid the concavity of the steel pipe caused by uneven force on the inner wall and lack of support inside the pipe body during the steel pipe bending process, thereby improving the success rate of the steel pipe bending process.

[0014] In addition, the expansion sleeve is connected to the lubricant storage container and the lubricant application pump. When the expansion sleeve is inserted into the steel pipe, lubricant can be applied to the inner wall of the steel pipe at the same time, reducing the resistance during the insertion of the expansion sleeve. During the insertion and withdrawal of the expansion sleeve, the air inside the inflatable inner cavity can be appropriately released, reducing the expansion strength of the expansion sleeve and reducing the processing difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.

[0016] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0017] In the attached figure:

[0018] Figure 1 A schematic diagram showing the overall structure of the present application;

[0019] Figure 2 Shows a schematic structural diagram of the rigid connecting column of the present application;

[0020] Figure 3 Shows this application Figure 2 Schematic diagram of the top view structure;

[0021] Figure 4 It shows a schematic structural diagram of the present invention in a state where the rigid connecting column and the expansion support sleeve are separated;

[0022] Figure 5 A schematic diagram showing the internal structure of the expansion sleeve of the present application is shown;

[0023] Figure 6 A schematic diagram of the internal structure of the rigid connecting column of the present application is shown.

[0024] Reference Signs List

[0025] 1. Steel pipe bending table; 101. Bending table guide wheel; 102. Guide slide; 2. Steel pipe bending mechanism; 3. Rigid connecting column; 301. Docking column; 302. Column wedge ring; 303. Connecting column guide plate; 4. Air pump; 401. Gas hose; 5. Lubricant storage container; 6. Lubricant application pump; 601. Lubricant delivery hose; 7. Expansion sleeve; 701. Docking socket; 702. Limiting wedge ring; 703. Lubricant channel; 704. Diverter cavity; 705. Diverter hole; 706. Gas channel; 707. Inflatable inner cavity. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example 1: Please refer to Figures 1 to 6 :

[0028] The utility model proposes a stable bending device for steel pipe processing, comprising: a steel pipe bending table 1, a steel pipe bending mechanism 2 is provided on the upper left side of the steel pipe bending table 1, four bending table guide wheels 101 are rotatably connected to the upper side of the steel pipe bending table 1, a guide chute 102 with a "T"-shaped cross section is provided on the upper surface of the steel pipe bending table 1, a connecting column guide plate 303 is slidably connected in the guide chute 102, a rigid connecting column 3 is fixedly connected above the connecting column guide plate 303, an expansion support sleeve 7 is installed on the left end of the rigid connecting column 3, the expansion support sleeve 7 is made of rubber material, and the expansion support sleeve 7 is provided with an inflatable inner cavity 707, and an air delivery channel 706 is provided at the right end of the inflatable inner cavity 707. The upper surface of the steel pipe bending table 1 is fixedly connected to an air pump 4, and the output end of the air pump 4 is connected to a gas delivery hose 401, and the gas delivery hose 401 is plugged into the gas delivery channel 706; the air pressure inside the inflatable inner cavity 707 can be controlled by the air pump 4, thereby controlling the expansion or contraction of the expansion sleeve 7. The expansion sleeve 7 in the contracted state is convenient for inserting into or withdrawing from the interior of the steel pipe. After the expansion of the expansion sleeve 7 is controlled, the internal support strength of the steel pipe can be improved, and the deformation of the steel pipe can be reduced.

[0029] In the embodiment of the present disclosure, the left end of the rigid connecting column 3 is fixedly connected to a docking column 301 with a cylindrical structure, and a column wedge ring 302 is provided on the left edge of the outer wall of the docking column 301, and the wedge surface of the column wedge ring 302 faces to the left, and two through-holes are opened inside the rigid connecting column 3; the right end face of the expansion support sleeve 7 is provided with a docking socket 701, and the left edge of the inner wall of the docking socket 701 is provided with a limiting wedge ring 702, the docking column 301 is plugged into the docking socket 701, and the column wedge ring 302 is fitted with the limiting wedge ring 702; the docking of the expansion support sleeve 7 and the rigid connecting column 3 is achieved by plugging the docking socket 701 and the docking column 301, and the connection strength between the expansion support sleeve 7 and the rigid connecting column 3 is increased by the structure of the column wedge ring 302 and the limiting wedge ring 702.

[0030] Example 2, on the basis of Example 1, a lubricant storage container 5 is fixedly connected above the steel pipe bending table 1, and a lubricant application pump 6 is fixedly connected to the right end face of the rigid connecting column 3; the input end of the lubricant application pump 6 is connected to the inside of the lubricant storage container 5 through a lubricant delivery hose 601, and the lubricant delivery hose 601 at the output end of the lubricant application pump 6 passes through the central through-hole of the rigid connecting column 3; a lubricant channel 703 is provided in the center of the expansion support sleeve 7, and a diversion cavity 704 is provided at the left end of the lubricant channel 703; Diversion holes 705 are radially distributed outside the diversion cavity 704. The diversion holes 705 communicate with the outer surface of the expansion sleeve 7. The lubricant delivery hose 601 is connected to the right end of the lubricant channel 703. During the process of inserting the expansion sleeve 7 into the steel pipe, lubricant is delivered to the lubricant channel 703 by the lubricant application pump 6. The lubricant passes through the diversion cavity 704 and the diversion holes 705 and flows between the outer wall of the expansion sleeve 7 and the inner wall of the steel pipe, thereby improving the lubrication of the expansion sleeve 7 and reducing the resistance of the expansion sleeve 7 to entering the steel pipe.

[0031] The working principle of this embodiment is as follows: First, the steel pipe is inserted to the right along the gaps between the guide wheels 101 of the four bending tables, and the expansion sleeve 7 is inserted into the interior of the steel pipe. During this process, the lubricant application pump 6 is started, and the lubricant is delivered to the interior of the lubricant channel 703 through the lubricant application pump 6, so that the lubricant passes through the diversion cavity 704 and the diversion hole 705 and flows between the outer wall of the expansion sleeve 7 and the inner wall of the steel pipe, thereby improving the lubrication of the expansion sleeve 7 and reducing the resistance of the expansion sleeve 7 entering the steel pipe. When the expansion sleeve 7 reaches the bending position, air is delivered to the inner inflation cavity 707 through the air pump 4, increasing the air pressure inside the inflation cavity 707, causing the expansion sleeve 7 to expand on the inner wall of the steel pipe, tightly filling and supporting the steel pipe, and starting the steel pipe bending mechanism 2 to bend the steel pipe. After the bending is completed, the air inside the inflation cavity 707 is released through the air pump 4, causing the expansion sleeve 7 to contract, and the steel pipe is pulled vertically to the right from between the guide wheels 101 of the bending table, and the expansion sleeve 7 is pulled out from the inside of the steel pipe.

[0032] In this article, there are several points to note:

[0033] 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0034] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0035] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A stable bending device for steel pipe processing, comprising: A steel pipe bending platform (1) is provided with a steel pipe bending mechanism (2) on the left side above the steel pipe bending platform (1), characterized in that four bending platform guide wheels (101) are rotatably connected above the steel pipe bending platform (1), a guide chute (102) with a "T"-shaped cross section is provided on the upper surface of the steel pipe bending platform (1), a connecting column guide plate (303) is slidably connected in the guide chute (102), and a rigid connecting column ( 3), an expansion support sleeve (7) is installed at the left end of the rigid connecting column (3), the expansion support sleeve (7) is made of rubber material, an inflation cavity (707) is opened inside the expansion support sleeve (7), and an air delivery channel (706) is opened at the right end of the inflation cavity (707), an air pump (4) is fixedly connected to the upper surface of the steel pipe bending table (1), and the output end of the air pump (4) is connected to a gas delivery hose (401), and the gas delivery hose (401) is plugged into the gas delivery channel (706).

2. A stable bending device for steel pipe processing according to claim 1, characterized in that: The left end of the rigid connecting column (3) is fixedly connected to a cylindrical docking column (301), and a column wedge ring (302) is provided on the left edge of the outer wall of the docking column (301), with the wedge surface of the column wedge ring (302) facing leftward. Two through holes are opened inside the rigid connecting column (3).

3. The stable bending device for steel pipe processing according to claim 1, characterized in that: A lubricant storage container (5) is fixedly connected above the steel pipe bending table (1), and a lubricant application pump (6) is fixedly connected to the right end surface of the rigid connecting column (3).

4. A stable bending device for steel pipe processing according to claim 3, characterized in that: The input end of the lubricant application pump (6) is connected to the interior of the lubricant storage container (5) via a lubricant delivery hose (601), and the lubricant delivery hose (601) at the output end of the lubricant application pump (6) passes through the central through-hole of the rigid connecting column (3).

5. The stable bending device for steel pipe processing according to claim 2, characterized in that: The right end face of the expansion support sleeve (7) is provided with a docking socket (701), the left edge of the inner wall of the docking socket (701) is provided with a limiting wedge ring (702), the docking plug (301) is plugged into the docking socket (701), and the plug wedge ring (302) is fitted with the limiting wedge ring (702).

6. A stable bending device for steel pipe processing according to claim 4, characterized in that: A lubricant channel (703) is provided at the center of the expansion support sleeve (7), and a diversion cavity (704) is provided at the left end of the lubricant channel (703).

7. A stable bending device for steel pipe processing according to claim 6, characterized in that: Diversion holes (705) are radially distributed outside the diversion cavity (704), and the diversion holes (705) are connected to the outer surface of the expansion support sleeve (7). The right end of the lubricant channel (703) is plugged into the lubricant delivery hose (601).

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