A stainless steel pipe bending device

Abstract

This utility model discloses a stainless steel pipe bending device, belonging to the field of pipe bending technology. The device includes a bending assembly, a limiting assembly, a pressing assembly, and a rotating block. The bending assembly includes a bending block with a bending groove on its exterior for conforming to the bent steel pipe. The limiting assembly is located outside the bending block and includes a limiting block for pressing one end of the steel pipe. The pressing assembly includes a mounting frame and two pressing rollers installed inside the mounting frame. By pressing down on the pressing rod, the pressing rod pushes the pressing assembly to rotate via the rotating block. The pressing assembly then rotates around the bending assembly via a connecting rod, applying downward pressure to the steel pipe, causing it to bend and conform to the inner side of the dial on the bending block, thus completing the bending. This device can bend the pipe without CNC or power supply, making it easy to carry and use.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending technology, and more specifically, to a stainless steel pipe bending device. Background Technology

[0002] A stainless steel pipe bending device is a specialized piece of equipment for bending stainless steel pipes. Its core function is to bend straight pipes into specific angles or arcs as needed, without damaging the pipe structure, using mechanical or hydraulic methods.

[0003] Chinese Patent Announcement No. CN219851552U discloses a thin-walled steel pipe bending device for machinery. This solution uses a push cylinder to push a push seat forward along a slide groove. At the same time, guide wheels form bending guidance on both sides of the thin-walled steel pipe. When the push seat moves forward, the pressure groove forms a limiting structure on the bending part of the thin-walled steel pipe, so that the thin-walled steel pipe is subjected to force for a long time and is shaped. This makes the force on both sides of the thin-walled steel pipe more uniform and the forming faster. The cylindrical guide wheels that can rotate synchronously ensure that the force on both sides of the thin-walled steel pipe is uniform during bending, avoiding bending indentations. The multiple sets of bending grooves on the bending die can bend thin-walled steel pipes of different sizes, making it more practical. Moreover, the bending die is a detachable structure, which is convenient for later maintenance and replacement.

[0004] The aforementioned CNC pipe bending machines typically need to be installed in a workshop or fixed workstation, and are not suitable for use on temporary construction sites or in confined spaces. For example, during home decoration or shop renovation, large pipe bending machines cannot be used on the construction site and cannot be conveniently carried to a temporary construction site.

[0005] Therefore, a stainless steel pipe bending device is proposed to address the above problems. Utility Model Content

[0006] 1. Technical problems to be solved This utility model provides a stainless steel pipe bending device, which can improve the problems existing in related technologies: CNC pipe bending machines need to be installed in workshops or fixed workstations, and are not suitable for use in temporary construction sites or narrow spaces. For example, when decorating a home or shop, large pipe bending machines cannot be used on the construction site and cannot be conveniently carried to a temporary construction site.

[0007] 2. Technical Solution To solve the above problems, the present invention adopts the following technical solution.

[0008] This application provides a stainless steel pipe bending device, including: a bending assembly, a limiting assembly, a pressing assembly, and a rotating block. The bending assembly includes a bending block with a bending groove on its outer side for conforming to the bent steel pipe. The limiting assembly is disposed outside the bending block and includes a limiting block for pressing one end of the steel pipe. The pressing assembly includes a mounting frame and two pressing rollers. The pressing rollers are mounted inside the mounting frame, and a mounting block is fixedly mounted outside the mounting frame. The rotating block is rotatably mounted on the outer end of the mounting block. The rotating block pushes the mounting block to rotate, and the mounting block drives the pressing rollers to press against the steel pipe, causing the steel pipe to bend and conform to the inner side of the bending groove.

[0009] The technical solutions described in this application embodiment have at least the following technical effects: (1) By pressing down the pressure bar, the pressure bar can push the pressure pipe assembly to rotate through the rotating block. The pressure pipe assembly will rotate around the bending pipe assembly through the connecting rod. At this time, the pressure pipe assembly will apply pressure to the steel pipe downward, so that the steel pipe bends and fits against the inner side of the dial on the bending pipe block, thereby completing the bending pipe. The bending pipe can be completed without CNC and power supply, making it easy to carry and use.

[0010] (2) When the pressure assembly presses against the steel pipe, since the pressure rollers are indirectly connected to the telescopic springs through the two rotating shafts, the two pressure rollers can change their positions by telescopic movement when they rotate and press against the steel pipe, so that the two pressure rollers can always be in close contact with the surface of the steel pipe, the applied force is more uniform, and the excessive force applied at a single point is prevented from causing deformation, thereby improving the quality of the pipe bend.

[0011] In some embodiments, the device further includes: a fixing block and a connecting rod, wherein the fixing block is fixedly installed on the outer end of the bent pipe block, a pressure plate is fixedly installed on the outside of the fixing block, a pressure rod is fixedly installed on the outside of the rotating block, a rotating shaft three is provided on the inner side of the mounting block, a rotating shaft one is provided on the inner side of the bent pipe block, and the two ends of the connecting rod are rotatably connected to the mounting block and the bent pipe block through the rotating shaft three and the rotating shaft one, respectively.

[0012] In some embodiments, a dial is installed on the outer end of the bend block, and an installation groove is formed on the outer end of the bend block.

[0013] In some embodiments, the limiting component includes a plug and a threaded rod. The plug is U-shaped, with one end fixedly installed inside the mounting groove and the other end having a threaded hole. The threaded rod is installed inside the threaded hole.

[0014] In some embodiments, one end of the threaded rod is rotatably connected to the outer end of the limiting block, two sliding grooves are provided on the inner side of the insert block, and sliders are fixedly installed on both sides of the limiting block, with the sliders slidably connected to the sliding grooves.

[0015] In some embodiments, the pressure tube assembly further includes two pairs of housings, the housings being fixedly installed on the outside of the mounting bracket, the mounting bracket having movable slots on both sides, and the pressure roller having a second rotating shaft fixedly installed on both sides, the second rotating shaft extending through the movable slots to the inside of the housing.

[0016] In some embodiments, the pressure tube assembly further includes two pairs of collars, the collars being rotatably mounted on the outer end of the second rotating shaft, the outer end of the collars being fixedly mounted with a second limiting post, the inner side of the housing being fixedly mounted with a first limiting post, and a telescopic spring being installed between the first limiting post and the second limiting post. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first overall structure of the present invention; Figure 2 This is a schematic diagram of the second overall structure of the present invention; Figure 3 This is a schematic diagram of the pipe bending assembly structure of this utility model; Figure 4 This is a schematic diagram of a partial explosion structure of the present invention; Figure 5 This is a schematic diagram of the limiting component structure of this utility model; Figure 6 This is a schematic diagram of the pressure tube assembly structure of this utility model; Figure 7 This is a partially enlarged structural diagram of the pressure tube assembly of this utility model.

[0018] Explanation of the labels in the diagram: 1. Pressure plate; 2. Compression rod; 3. Fixing block; 4. Pipe bending assembly; 41. Pipe bending block; 42. Dial; 43. Pipe bending groove; 44. Rotating shaft one; 45. Mounting groove; 5. Connecting rod; 6. Pressure tube assembly; 61. Mounting bracket; 62. Movable groove; 63. Pressure roller; 64. Rotating shaft two; 65. Housing; 66. Telescopic spring; 67. Limiting post one; 68. Limiting post two; 69. Collar; 7. Rotating block; 8. Installation block; 9. Limiting component; 91. Insert block; 92. Threaded rod; 93. Limiting block; 94. Slider; 95. Slide groove; 10. Rotating shaft three. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 - Figure 7 This application provides a stainless steel pipe bending device, comprising: a bending assembly 4, a limiting assembly 9, a pressing assembly 6, and a rotating block 7. The bending assembly 4 includes a bending block 41, with a bending groove 43 on the outside of the bending block 41 for fitting the bent steel pipe. The limiting assembly 9 is disposed outside the bending block 41 and includes a limiting block 93 for pressing one end of the steel pipe. The pressing assembly 6 includes a mounting frame 61 and two pressing rollers 63. The pressing rollers 63 are mounted inside the mounting frame 61. An mounting block 8 is fixedly mounted outside the mounting frame 61. The rotating block 7 is rotatably mounted on the outer end of the mounting block 8. The rotating block 7 pushes the mounting block 8 to rotate, and the mounting block 8 drives the pressing rollers 63 to press against the steel pipe, causing the steel pipe to bend and fit against the inside of the bending groove 43.

[0021] The device in this solution is mainly used for bending stainless steel pipes. It is small in size and easy to carry, making it suitable for use on temporary construction sites. The bending process primarily involves the cooperation of a pipe pressing assembly 6 and a pipe bending assembly 4. These two assemblies are connected by a connecting rod 5. By pressing down on the pressure rod 2, the pressure rod 2 drives the pipe pressing assembly 6 to rotate via the rotating block 7. The pipe pressing assembly 6 then rotates around the pipe bending assembly 4 via the connecting rod 5. This applies downward pressure to the steel pipe, bending it to conform to the inner side of the bending groove 43 on the bending block 41, thus completing the bending. The bending process can be completed without CNC or power supply, and its small size and simple structure make it easy to carry and use.

[0022] Please see Figure 3 and Figure 4 It also includes: a fixing block 3 and a connecting rod 5. The fixing block 3 is fixedly installed on the outer end of the bent pipe block 41. A pressure plate 1 is fixedly installed on the outside of the fixing block 3. A pressure rod 2 is fixedly installed on the outside of the rotating block 7. A rotating shaft 3 10 is provided on the inner side of the mounting block 8. A rotating shaft 1 44 is provided on the inner side of the bent pipe block 41. The two ends of the connecting rod 5 are rotatably connected to the mounting block 8 and the bent pipe block 41 through the rotating shaft 3 10 and the rotating shaft 1 44, respectively.

[0023] The pipe pressing assembly 6 and the pipe bending assembly 4 are mainly driven by the pressure plate 1 and the pressure rod 2. The pressure plate 1 is fixedly connected to the fixed block 3. After the pressure plate 1 is placed on the ground, the pressure plate 1 is mainly used for the user to step on it. The pressure rod 2 is fixedly connected to the rotating block 7. The pressure rod 2 is mainly used for the user to hold it and press it down, which can drive the pipe pressing assembly 6 to rotate.

[0024] In this design, the rotating block 7 is rotatably mounted on the outside of the mounting block 8, while the mounting block 8 is fixedly mounted on the outer end of the mounting frame 61. The mounting frame 61 will block the rotation of the rotating block 7, allowing the rotating block 7 to push the mounting frame 61 to rotate. The fixing block 3 is fixed on the outer end of the bending block 41. A rotating shaft 44 is mounted on the outer end of the bending block 41, and a rotating shaft 10 is mounted on the outer end of the mounting block 8. The rotating shaft 10 and the rotating shaft 44 have the same function, which is to install the connecting rod 5. The two ends of the connecting rod 5 are rotatably connected to the rotating shaft 10 and the rotating shaft 44, respectively. Thus, the pressing pipe assembly 6 and the bending pipe assembly 4 can be connected together through the connecting rod 5. When the bending pipe assembly 4 is fixedly installed on the ground, rotating the pressing pipe assembly 6 can bend the steel pipe tightly against the bending pipe assembly 4.

[0025] Please see Figure 3 A dial 42 is installed on the outer end of the bend block 41, and an installation groove 45 is opened on the outer end of the bend block 41.

[0026] In this design, the bending block 41 has a bending groove 43 at its outer end. The bending groove 43 is used to fit the steel pipe, so that the steel pipe can be bent along the bending groove 43 after being pressed. A scale 42 is also installed on the surface of the bending block 41. Angles are engraved on the scale 42 so that the steel pipe can be bent by referring to its indication, which makes it easy to determine the bending angle. At the same time, an installation groove 45 is also opened at the outer end of the bending block 41. The installation groove 45 is mainly used to install the limiting component 9.

[0027] Please see Figure 4 and Figure 5 The limiting component 9 includes a plug 91 and a threaded rod 92. The plug 91 is U-shaped. One end of the plug 91 is fixedly installed inside the mounting groove 45, and the other end of the plug 91 has a threaded hole. The threaded rod 92 is installed in the threaded hole.

[0028] One end of the threaded rod 92 is rotatably connected to the outer end of the limiting block 93. Two sliding grooves 95 are opened on the inner side of the insert block 91. Slider 94 is fixedly installed on both sides of the limiting block 93, and the slider 94 is slidably connected to the sliding groove 95.

[0029] The limiting component 9 in this design is mainly used to clamp the end of the steel pipe, preventing movement during bending and facilitating bending. The insert 91 is U-shaped, with one end inserted into the mounting groove 45 on the outer end of the bending block 41. The insert 91 is then fixed to the bottom of the bending block 41 by threads extending into the mounting groove 45, allowing it to be mounted on the bending block 41. The other end of the insert 91 has a groove with a threaded hole. A threaded rod 92 is installed in the threaded hole and can extend and retract through a threaded connection. Sliding grooves 95 are formed on both sides of the groove. The limiting block 93 is fixed on both sides. The slider 94 and the slide groove 95 are slidably connected, so that the limiting block 93 can slide through the slider 94 and the slide groove 95, allowing the limiting block 93 to move. The outside of the limiting block 93 also has a groove that matches the bending groove 43. After installation, the limiting block 93 is facing the bending groove 43. At this time, the steel pipe is inserted between the limiting block 93 and the bending groove 43 on the bending block 41. Then, the threaded rod 92 is rotated, which allows the limiting block 93 to move towards the bending block 41, tightly clamping the steel pipe between the bending groove 43 and the limiting block 93. By fixing the steel pipe, it can prevent it from moving when bending. The movable characteristic of the limiting block 93 can also be used for steel pipes of different sizes.

[0030] Please see Figure 6 and Figure 7 The pressure tube assembly 6 also includes two pairs of housings 65. The housings 65 are fixedly installed on the outside of the mounting bracket 61. Movable grooves 62 are provided on both sides of the mounting bracket 61. Rotary shafts 64 are fixedly installed on both sides of the pressure roller 63. The rotating shafts 64 extend through the movable grooves 62 to the inside of the housings 65.

[0031] The pressure tube assembly 6 also includes two pairs of collars 69. The collars 69 are rotatably mounted on the outer end of the second shaft 64. The outer end of the collars 69 is fixedly mounted with a second limiting post 68. The inner side of the housing 65 is fixedly mounted with a first limiting post 67. A telescopic spring 66 is installed between the first limiting post 67 and the second limiting post 68.

[0032] The pipe pressing assembly 6 in this scheme is mainly used to apply pressure to the steel pipe, so that it is bent tightly against the pipe bending block 41. The mounting bracket 61 is fixedly connected to the mounting block 8. At the same time, the mounting bracket 61 also blocks the rotation of the rotating block 7. Therefore, when the rotating block 7 rotates towards the pipe bending assembly 4, the mounting bracket 61 will be blocked by the mounting bracket 61, which will drive the mounting bracket 61 and the mounting block 8 to rotate along with the connecting rod 5.

[0033] Two movable slots 62 are provided on both sides of the mounting frame 61, mainly for the pressure rollers 63 to move. Both pressure rollers 63 are located inside the mounting frame 61. On both sides of the pressure rollers 63, a second rotating shaft 64 is fixed, which passes through the movable slots 62. At the same time, two housings 65 are fixed on both sides of the mounting frame 61, covering the movable slots 62. The second rotating shaft 64 extends into the housing 65. A collar 69 is rotatably installed at the outer end of the second rotating shaft 64, so that the pressure rollers 63 can rotate through the second rotating shaft 64. The collar 69 does not rotate, but it can move inside the housing 65. Two limit posts 68 are fixed at the outer end of the collar 69, and two limit posts 67 are fixed on the inner side wall of the housing 65. The limit posts 67 and the limit posts 68 correspond to each other. At the same time, a telescopic spring 66 is sleeved on the outer end of the limit posts 67 and the limit posts 68.

[0034] When the mounting bracket 61 drives the pressure roller 63 to press against the steel pipe, since the two pressure rollers 63 are parallel, they cannot simultaneously contact the steel pipe. Through the extension and retraction of the telescopic spring 66, the pressure roller 63 that first contacts the steel pipe retracts inward, allowing the other pressure roller 63 to contact the steel pipe. This ensures that both pressure rollers 63 simultaneously contact the surface of the bent steel pipe, preventing excessive pressure from a single pressure roller 63 on a single point. Simultaneous contact of the two pressure rollers 63 also increases the constraint force on the steel pipe, preventing it from shifting. The limiting posts 67 and 68 abut against each other, preventing the pressure roller 63 from excessively retracting and acting as a limit. When the limiting posts 67 and 68 abut against each other, the pressure roller 63 will no longer retract inward.

[0035] Working principle: When using this device to bend a steel pipe, first clamp one end of the steel pipe and insert it between the limiting block 93 and the bending groove 43 on the bending block 41. Then rotate the threaded rod 92 to clamp the steel pipe between the bending groove 43 and the limiting block 93. At this time, you can step on the pressure plate 1 and rotate the pressure rod 2 downward. The pressure rod 2 drives the rotating block 7. The rotating block 7 is blocked by the mounting frame 61, which will drive the mounting frame 61 and the mounting block 8 to rotate through the connecting rod 5. At this time, the mounting frame 61 drives the pressure roller 63 to press against the steel pipe. The pressure roller 63 that contacts the steel pipe first retracts inward. Both pressure rollers 63 can contact the surface of the bent steel pipe at the same time. By pressing down with the pressure rollers 63, the steel pipe can be bent tightly against the bending groove 43 on the bending block 41. Due to its small size and simple structure, it is easy to carry and use.

Claims

1. A stainless steel pipe bending device, characterized in that, include: The pipe bending assembly (4) includes a pipe bending block (41), and a pipe bending groove (43) is provided on the outside of the pipe bending block (41). The pipe bending groove (43) is used to fit the bent steel pipe. Limiting component (9), the limiting component (9) is disposed outside the bend block (41), the limiting component (9) includes a limiting block (93), the limiting block (93) is used to press down one end of the steel pipe; The crimping assembly (6) includes a mounting bracket (61) and two pressure rollers (63). The pressure rollers (63) are installed inside the mounting bracket (61), and a mounting block (8) is fixedly installed on the outside of the mounting bracket (61). Rotating block (7), which is rotatably mounted on the outer end of mounting block (8); The rotating block (7) pushes the mounting block (8) to rotate, and the mounting block (8) drives the pressure roller (63) to press against the steel pipe, and the steel pipe bends and fits against the inside of the bend groove (43).

2. The stainless steel pipe bending device according to claim 1, characterized in that, Also includes: The fixed block (3) and the connecting rod (5) are fixedly installed on the outer end of the bent pipe block (41). A pressure plate (1) is fixedly installed on the outside of the fixed block (3). A pressure rod (2) is fixedly installed on the outside of the rotating block (7). A rotating shaft three (10) is provided on the inner side of the mounting block (8). A rotating shaft one (44) is provided on the inner side of the bent pipe block (41). The two ends of the connecting rod (5) are rotatably connected to the mounting block (8) and the bent pipe block (41) through the rotating shaft three (10) and the rotating shaft one (44) respectively.

3. The stainless steel pipe bending device according to claim 1, characterized in that: The outer end of the bent pipe block (41) is equipped with a dial (42), and the outer end of the bent pipe block (41) is provided with an installation groove (45).

4. A stainless steel pipe bending device according to claim 3, characterized in that: The limiting component (9) includes a plug (91) and a threaded rod (92). The plug (91) is U-shaped. One end of the plug (91) is fixedly installed inside the mounting groove (45). The other end of the plug (91) has a threaded hole, and the threaded rod (92) is installed in the threaded hole.

5. A stainless steel pipe bending device according to claim 4, characterized in that: One end of the threaded rod (92) is rotatably connected to the outer end of the limiting block (93). Two sliding grooves (95) are opened on the inner side of the insert (91). Slider (94) is fixedly installed on both sides of the limiting block (93). The slider (94) is slidably connected to the sliding groove (95).

6. A stainless steel pipe bending device according to claim 1, characterized in that: The pressure tube assembly (6) also includes two pairs of housings (65). The housings (65) are fixedly installed on the outside of the mounting bracket (61). Movable grooves (62) are provided on both sides of the mounting bracket (61). Rotary shafts (64) are fixedly installed on both sides of the pressure roller (63). The rotating shafts (64) extend through the movable grooves (62) to the inside of the housings (65).

7. A stainless steel pipe bending device according to claim 6, characterized in that: The pressure tube assembly (6) also includes two pairs of collars (69), which are rotatably mounted on the outer end of the second rotating shaft (64). The outer end of the collar (69) is fixedly mounted with a second limiting post (68), and the inner side of the housing (65) is fixedly mounted with a first limiting post (67). A telescopic spring (66) is installed between the first limiting post (67) and the second limiting post (68).

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