Hydraulic pipe expanding equipment for stainless steel pipes

Abstract

The utility model relates to the technical field of pipe processing, disclose a kind of stainless steel pipe hydraulic diameter expanding equipment, including machine body, the top of the machine body is fixedly connected with ejection mechanism, the ejection mechanism is used to eject blanking, the top of the machine body is fixedly connected with arc slide plate in front side, the top of the arc slide plate is fixedly connected with support plate in front side, the top of the support plate is fixedly connected with buffer assembly, and the buffer assembly is used to buffer discharge force;The ejection mechanism includes support sheet, and the support sheet is fixedly connected in the top of the machine body, the outer wall rear side of the support sheet is fixedly connected with U-shaped plate, and the inside of the U-shaped plate is slidably connected with sliding block.In the utility model, fixed stub moves with its movement, drives double-section rotating plate to drive sliding block to slide along U-shaped plate, so that ejection mechanism moves forward and ejects pipe, after pipe is separated from processing position, slide to arc slide plate and complete blanking, without mechanical arm, and different specifications of pipe are adapted.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing technology, and in particular to a hydraulic expansion device for stainless steel pipes. Background Technology

[0002] Stainless steel pipes are long, hollow metal products made from stainless steel through specific processing techniques. Their core characteristics combine the corrosion resistance and high strength of stainless steel with the lightweight and ease of transport benefits of the hollow structure. They are widely used in fluid transport, structural support, and decoration. Stainless steel pipe hydraulic expansion equipment is a metal pipe forming and processing device specifically designed for the characteristics of stainless steel pipes. Its core function is to apply controllable pressure to designated areas of the stainless steel pipe through a hydraulically driven mechanical structure, causing plastic deformation under mold constraints. This allows for the expansion of the pipe's inner diameter, calibration of its cross-sectional shape, or the creation of specific expansion shapes.

[0003] Existing pipe enlarging equipment operates by selecting a suitable enlarging mold based on the specifications of the stainless steel pipe to be enlarged and the required dimensions after enlargement. The mold is then correctly installed in the designated position on the equipment. Upon starting the equipment, the hydraulic power system begins operation. The hydraulic pump pressurizes hydraulic oil and delivers it to the hydraulic cylinder, driving the enlarging head in the enlarging actuator to apply pressure to the inside or outside of the pipe. This causes the pipe to undergo plastic deformation under the constraint of the mold, thus achieving enlargement. However, after enlargement, manual handling is required to remove the pipe and transport it to the stacking area. This process is cumbersome and time-consuming, and manual handling is not efficient. The inability to keep up with the expansion process results in the equipment frequently being in a "standby waiting for handling" state, thus reducing the effective working time of the equipment. The existing technology is to install a gantry-type robotic arm or articulated robotic arm above the expansion equipment. After the expansion is completed, the robotic arm can automatically grab the pipe and place it in a designated position. However, the gripping mechanism of the robotic arm needs to match the diameter and length of the pipe. During production, it is necessary to frequently switch between small-diameter and large-diameter pipes to adapt to different sizes of pipes. Manual replacement of the grippers or readjustment of the gripper opening is required for gripping and unloading, which is inconvenient for subsequent production work. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a hydraulic expansion device for stainless steel pipes, which aims to improve the existing technology where the gripping mechanism of the robotic arm needs to match the diameter and length of the pipe, and the production process requires frequent switching between small-diameter and large-diameter pipes to adapt to different sizes of pipes, and manual replacement of the grippers or readjustment of the gripper opening for gripping and unloading.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a hydraulic expansion device for stainless steel pipes, comprising a machine body, an ejection mechanism fixedly connected to the top of the machine body for ejecting material, an arc-shaped slide plate fixedly connected to the front top of the machine body, a support plate fixedly connected to the front top of the arc-shaped slide plate, and a buffer assembly fixedly connected to the top of the support plate for buffering force leakage; the ejection mechanism includes a support plate fixedly connected to the top of the machine body, a U-shaped plate fixedly connected to the rear outer wall of the support plate, a slider slidably connected inside the U-shaped plate, a top column plate fixedly connected to the rear top of the slider, and a drive assembly fixedly connected to the front outer wall of the support plate.

[0006] As a further description of the above technical solution:

[0007] The driving assembly includes a motor, which is fixedly connected to the front side of the outer wall of the support plate. A circular plate is fixedly connected to the output end of the motor. A fixed short column is fixedly connected to the rear end of the outer wall of the circular plate. A double-section rotating plate is rotatably connected to the rear end of the outer wall of the fixed short column. The rear end of the top of the double-section rotating plate is rotatably connected to the front side of the outer wall of the slider.

[0008] As a further description of the above technical solution:

[0009] The buffer assembly includes a first support plate, which is fixedly connected to the top of the support plate. A spring is fixedly connected to the rear side of the outer wall of the first support plate, and a second support plate is fixedly connected to the rear end of the outer wall of the spring. Force relief assemblies are fixedly connected to the left and right sides of the rear end of the outer wall of the first support plate.

[0010] As a further description of the above technical solution:

[0011] The pressure relief assembly includes multiple L-shaped plates, which are equidistantly fixedly connected to the left and right rear ends of the outer wall of the first support plate. A piston rod is slidably connected to the inner wall of each L-shaped plate. A piston cylinder is fixedly connected to the left and right rear ends of the outer wall of the first support plate. The rear end of the outer wall of the piston rod is fixedly connected to the front side of the outer wall of the second support plate. A venting groove is provided on the outer wall of each piston cylinder.

[0012] As a further description of the above technical solution:

[0013] The outer wall of the piston rod is slidably connected to the inside of the piston cylinder, and the venting groove is circular in shape.

[0014] As a further description of the above technical solution:

[0015] A hydraulic rod is fixedly connected to the top of the machine body, and a mold is fixedly connected to the bottom end of the hydraulic rod.

[0016] As a further description of the above technical solution:

[0017] A steel pipe column is fixedly connected to the top of the machine body, and an expansion rod is fixedly connected to the left side of the outer wall of the machine body.

[0018] As a further description of the above technical solution:

[0019] A storage box is fixedly connected to the bottom of the machine body, and mounting plates are fixedly connected to the four corners of the bottom of the machine body. Universal wheels are fixedly connected to the bottom of each mounting plate.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the motor runs, driving the circular plate to rotate, and the fixed short column moves with it, driving the double-section rotating plate to drive the slider to slide along the U-shaped plate, so that the top column plate moves forward to push out the pipe. After the pipe leaves the processing position, it slides down to the arc-shaped slide plate to complete the unloading. No robotic arm is needed, and it is suitable for pipes of different specifications.

[0022] 2. In this utility model, after the pipe is ejected, it slides along the arc-shaped slide plate, contacts the second support short plate of the buffer assembly and applies an impact force. The second support short plate moves forward, compresses the spring for initial buffering, and at the same time drives the piston rod to slide along the L-shaped plate and slide inside the piston cylinder. The compressed air is discharged from the venting groove to form a damping force. The spring and the damping force together weaken the inertia, avoid damage to the pipe, and complete the buffered feeding. Attached Figure Description

[0023] Figure 1 This is a front view of a hydraulic expansion device for stainless steel pipes proposed in this utility model;

[0024] Figure 2 This is a perspective view of a hydraulic expansion device for stainless steel pipes proposed in this utility model;

[0025] Figure 3 This is a partial structural schematic diagram of a hydraulic expansion device for stainless steel pipes proposed in this utility model;

[0026] Figure 4 This is a partial structural exploded view of a hydraulic expansion device for stainless steel pipes proposed in this utility model;

[0027] Figure 5 This is a partial structural illustration of a hydraulic expansion device for stainless steel pipes proposed in this utility model;

[0028] Figure 6 This is a schematic diagram of the buffer assembly of a hydraulic expansion device for stainless steel pipes proposed in this utility model.

[0029] Legend:

[0030] 1. Body; 2. Ejection mechanism; 201. Support plate; 202. U-shaped plate; 203. Top column plate; 204. Slider; 205. Drive assembly; 2051. Motor; 2052. Circular plate; 2053. Fixed short column; 2054. Double-section rotating plate; 3. Buffer assembly; 301. Support short plate one; 302. Spring; 303. Support short plate two; 304. Pressure relief assembly; 3041. L-shaped plate; 3042. Piston rod; 3043. Piston cylinder; 3044. Air vent groove; 4. Support plate; 5. Storage box; 6. Mounting plate; 7. Casters; 8. Hydraulic rod; 9. Expanding rod; 10. Arc-shaped slide plate; 11. Steel pipe column; 12. Mold. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 4 and Figure 5This utility model provides an embodiment of a hydraulic expansion device for stainless steel pipes, comprising a body 1, an ejector mechanism 2 fixedly connected to the top of the body 1 for ejecting material, an arc-shaped slide plate 10 fixedly connected to the front top of the body 1, a support plate 4 fixedly connected to the front top of the arc-shaped slide plate 10, and a buffer assembly 3 fixedly connected to the top of the support plate 4 for buffering force leakage; the ejector mechanism 2 includes a support plate 201 fixedly connected to the top of the body 1, a U-shaped plate 202 fixedly connected to the rear outer wall of the support plate 201, a slider 204 slidably connected inside the U-shaped plate 202, a top column plate 203 fixedly connected to the rear top of the slider 204, and a drive assembly 205 fixedly connected to the front outer wall of the support plate 201, the drive assembly 205 including a motor 2051 fixedly connected to the front outer wall of the support plate 201. The model of motor 2051 is Y160-2. Its working principle is to use electricity to generate a magnetic field, and then convert electrical energy into mechanical energy through the interaction between magnetic fields or the force of the magnetic field on the current. A circular plate 2052 is fixedly connected to the output end of motor 2051. A fixed short column 2053 is fixedly connected to the rear end of the outer wall of the circular plate 2052. A double-section rotating plate 2054 is rotatably connected to the rear end of the outer wall of the fixed short column 2053. The rear side of the top of the double-section rotating plate 2054 is rotatably connected to the front side of the outer wall of the slider 204. A hydraulic rod 8 is fixedly connected to the top of the machine body 1. The model of hydraulic rod 8 is DYTZW1000-500 / 110-X. Its general structure and working principle are as follows: it consists of a cylinder, a piston, and a piston rod 3042. After the hydraulic oil enters the cylinder, it pushes the piston and drives the piston rod 3042 to extend or retract, directly outputting thrust or pull force. A mold 12 is fixedly connected to the bottom end of hydraulic rod 8.

[0033] Specifically, the motor 2051 in the drive assembly 205 operates, causing the circular plate 2052 fixed at its output end to rotate. When the circular plate 2052 rotates, the fixed short column 2053 at the rear end of its outer wall moves along with it, thereby driving the double-section rotating plate 2054 connected to it to move. The rear side of the top of the double-section rotating plate 2054 is rotatably connected to the front side of the outer wall of the slider 204. Driven by the double-section rotating plate 2054, the slider 204 slides along the inside of the U-shaped plate 202. The U-shaped plate 202 is fixed to the rear side of the outer wall of the support plate 201. 1. Fixed to the top of the machine body 1; when the slider 204 slides, the top column plate 203 fixed to the rear of its top moves forward, pushing the expanded pipe, causing the pipe to leave the processing position on the machine body 1. The pushed pipe slides down onto the arc-shaped slide plate 10. The arc-shaped slide plate 10 is fixed to the front of the top of the machine body 1 and slides forward along the slide plate, falling into the arc-shaped slide plate 10 to complete the unloading. No robotic arm is needed to grab it, thus avoiding the problem of frequently changing or adjusting the gripper due to changes in pipe size, and adapting to the unloading needs of different specifications of pipes.

[0034] Reference Figure 3 and Figure 6 The buffer assembly 3 includes a first support plate 301, which is fixedly connected to the top of the support plate 4. A spring 302 is fixedly connected to the rear side of the outer wall of the first support plate 301. A second support plate 303 is fixedly connected to the rear end of the outer wall of the spring 302. Force relief assemblies 304 are fixedly connected to both the left and right sides of the rear end of the outer wall of the first support plate 301. The force relief assemblies 304 include multiple L-shaped plates 3041, which are fixedly connected to the first support plate 301 at equal intervals. On the left and right sides of the rear end of the outer wall of 01, the inner wall of the L-shaped plate 3041 is slidably connected to the piston rod 3042. On the left and right sides of the rear end of the outer wall of the supporting short plate 1 301, the piston cylinder 3043 is fixedly connected to the piston cylinder 3042. The rear end of the outer wall of the piston rod 3042 is fixedly connected to the front side of the outer wall of the supporting short plate 2 303. The outer wall of the piston cylinder 3043 is provided with a venting groove 3044. The outer wall of the piston rod 3042 is slidably connected to the inside of the piston cylinder 3043. The venting groove 3044 is circular in shape.

[0035] Specifically, after the expanded pipe is pushed by the ejector mechanism 2, it slides forward along the arc-shaped slide plate 10. The pipe contacts the rear side of the outer wall of the second support plate 303 in the buffer assembly 3. Due to the sliding inertia of the pipe itself, it will exert a forward impact force on the second support plate 303. After the second support plate 303 is subjected to the impact force, it moves forward, which will compress the spring 302 fixedly connected to the front side of its outer wall. The other end of the spring 302 is fixed to the rear side of the outer wall of the first support plate 301. The first support plate 301 is fixed to the top of the support plate 4. The spring 302 absorbs part of the impact force through deformation, achieving initial buffering. At the same time, when the second support plate 303 moves forward, it will drive the piston rod 3042 fixedly connected to the front side of its outer wall to slide forward synchronously. Rod 3042 passes through and slides on the inner wall of L-shaped plate 3041. L-shaped plate 3041 is fixed equidistantly on the left and right sides of the rear end of the outer wall of support short plate 301, serving as a guide. When piston rod 3042 slides forward, its outer wall slides along the inside of piston cylinder 3043. Piston cylinder 3043 is fixed on the left and right sides of the rear end of the outer wall of support short plate 301. The air inside piston cylinder 3043 is compressed by piston rod 3042 and slowly discharged through the circular venting groove 3044 opened on the outer wall of piston cylinder 3043. During the process of air being discharged from venting groove 3044, damping force is formed, which works together with the elastic force of spring 302 to further weaken the sliding inertia of the pipe, preventing the pipe from being damaged or ejected due to excessive speed, thus completing the entire buffer feeding process.

[0036] Reference Figure 1 , Figure 2 and Figure 3A steel pipe column 11 is fixedly connected to the top of the body 1, an expansion rod 9 is fixedly connected to the left side of the outer wall of the body 1, a storage box 5 is fixedly connected to the bottom of the body 1, and mounting plates 6 are fixedly connected to the four corners of the bottom of the body 1. Universal wheels 7 are fixedly connected to the bottom of the mounting plates 6.

[0037] Specifically, during processing, the steel pipe column 11 provides fixed support for the pipe to be expanded, ensuring that the pipe is stably positioned during processing; the expansion rod 9, driven by the hydraulic system, applies pressure to the pipe to achieve expansion; the storage box 5 can store tools and accessories for easy access; the casters 7 fixed to the bottom mounting plate 6 can flexibly move the machine body 1, facilitating equipment adjustment or relocation.

[0038] Working principle: The motor 2051 in the drive assembly 205 rotates, causing the circular plate 2052 fixed at its output end to rotate. When the circular plate 2052 rotates, the fixed short column 2053 at the rear end of its outer wall moves along with it, thereby driving the double-section rotating plate 2054 connected to it to move. The rear side of the top of the double-section rotating plate 2054 is rotatably connected to the front side of the outer wall of the slider 204. Driven by the double-section rotating plate 2054, the slider 204 slides along the inside of the U-shaped plate 202. The U-shaped plate 202 is fixed to the rear side of the outer wall of the support plate 201. 1. It is fixed to the top of the machine body 1; when the slider 204 slides, the top column plate 203 fixed on the rear side of its top moves forward, pushing the expanded pipe, so that the pipe is removed from the processing position on the machine body 1. The pushed pipe slides down onto the arc slide plate 10. The arc slide plate 10 is fixed to the front side of the top of the machine body 1 and slides forward along the slide plate, falling into the arc slide plate 10 to complete the unloading. There is no need for the robotic arm to grab it, thus avoiding the problem of frequently changing or adjusting the gripper due to changes in pipe size, and adapting to the unloading needs of different specifications of pipes.

[0039] After the expanded pipe is pushed by the ejector mechanism 2, it slides forward along the arc-shaped slide plate 10. The pipe contacts the rear side of the outer wall of the second support plate 303 in the buffer assembly 3. Due to the sliding inertia of the pipe itself, it will exert a forward impact force on the second support plate 303. After the second support plate 303 is impacted, it moves forward, which will compress the spring 302 fixedly connected to the front side of its outer wall. The other end of the spring 302 is fixed to the rear side of the outer wall of the first support plate 301. The first support plate 301 is fixed to the top of the support plate 4. The spring 302 absorbs part of the impact force through deformation, achieving initial buffering. At the same time, when the second support plate 303 moves forward, it will drive the piston rod 3042 fixedly connected to the front side of its outer wall to slide forward synchronously. 042 is slidably connected to the inner wall of the L-shaped plate 3041. The L-shaped plate 3041 is fixed equidistantly to the left and right sides of the rear end of the outer wall of the supporting short plate 301, serving as a guide. When the piston rod 3042 slides forward, its outer wall will slide along the inside of the piston cylinder 3043. The piston cylinder 3043 is fixed to the left and right sides of the rear end of the outer wall of the supporting short plate 301. The air inside the piston cylinder 3043 is compressed by the piston rod 3042 and slowly discharged through the circular venting groove 3044 opened on the outer wall of the piston cylinder 3043. During the process of air being discharged from the venting groove 3044, a damping force is formed, which works together with the elastic force of the spring 302 to further weaken the sliding inertia of the pipe, preventing the pipe from being damaged or ejected due to excessive speed, thus completing the entire buffer feeding process.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic expansion device for stainless steel pipes, comprising a machine body (1), characterized in that: The top of the machine body (1) is fixedly connected to an ejection mechanism (2), which is used to eject the material. The front side of the top of the machine body (1) is fixedly connected to an arc-shaped slide plate (10), and the front side of the top of the arc-shaped slide plate (10) is fixedly connected to a support plate (4). The top of the support plate (4) is fixedly connected to a buffer assembly (3), which is used to buffer the force release. The ejection mechanism (2) includes a support plate (201), which is fixedly connected to the top of the body (1). A U-shaped plate (202) is fixedly connected to the rear side of the outer wall of the support plate (201). A slider (204) is slidably connected inside the U-shaped plate (202). A top column plate (203) is fixedly connected to the rear side of the top of the slider (204). A drive assembly (205) is fixedly connected to the front side of the outer wall of the support plate (201).

2. The hydraulic expansion device for stainless steel pipes according to claim 1, characterized in that: The drive assembly (205) includes a motor (2051), which is fixedly connected to the front side of the outer wall of the support plate (201). A circular plate (2052) is fixedly connected to the output end of the motor (2051). A fixed short column (2053) is fixedly connected to the rear end of the outer wall of the circular plate (2052). A double-section rotating plate (2054) is rotatably connected to the rear end of the outer wall of the fixed short column (2053). The rear end of the top of the double-section rotating plate (2054) is rotatably connected to the front side of the outer wall of the slider (204).

3. The hydraulic expansion device for stainless steel pipes according to claim 1, characterized in that: The buffer assembly (3) includes a first support plate (301), which is fixedly connected to the top of the support plate (4). A spring (302) is fixedly connected to the rear side of the outer wall of the first support plate (301). A second support plate (303) is fixedly connected to the rear end of the outer wall of the spring (302). A force-relieving assembly (304) is fixedly connected to both the left and right sides of the rear end of the outer wall of the first support plate (301).

4. The hydraulic expansion device for stainless steel pipes according to claim 3, characterized in that: The pressure relief assembly (304) includes multiple L-shaped plates (3041), which are fixedly connected at equal intervals to the left and right rear ends of the outer wall of the first support plate (301). A piston rod (3042) is slidably connected to the inner wall of each L-shaped plate (3041). A piston cylinder (3043) is fixedly connected to the left and right rear ends of the outer wall of the first support plate (301). The rear end of the outer wall of the piston rod (3042) is fixedly connected to the front side of the outer wall of the second support plate (303). A venting groove (3044) is provided on the outer wall of each piston cylinder (3043).

5. The hydraulic expansion device for stainless steel pipes according to claim 4, characterized in that: The outer wall of the piston rod (3042) is slidably connected to the inside of the piston cylinder (3043), and the venting groove (3044) is circular in shape.

6. The hydraulic expansion device for stainless steel pipes according to claim 1, characterized in that: A hydraulic rod (8) is fixedly connected to the top of the machine body (1), and a mold (12) is fixedly connected to the bottom end of the hydraulic rod (8).

7. The hydraulic expansion device for stainless steel pipes according to claim 1, characterized in that: A steel pipe column (11) is fixedly connected to the top of the machine body (1), and an expansion rod (9) is fixedly connected to the left side of the outer wall of the machine body (1).

8. The hydraulic expansion device for stainless steel pipes according to claim 1, characterized in that: A storage box (5) is fixedly connected to the bottom of the body (1), and mounting plates (6) are fixedly connected to the four corners of the bottom of the body (1). Universal wheels (7) are fixedly connected to the bottom of each mounting plate (6).

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