Inner diameter shaping device for steel pipe to be shaped after punching

Abstract

The utility model belongs to the technical field of steel pipe shaping, and particularly relates to an inner diameter shaping device for a punched steel pipe to be shaped. Comprising a long-stroke air cylinder, a shaping core rod, a bottom plate and positioning blocks which are sequentially connected, the positioning blocks are installed close to the head end of the bottom plate and the tail end of the bottom plate, the shaping core rod is installed at the head end of the long-stroke air cylinder, and the long-stroke air cylinder is installed on the bottom plate through an air cylinder fixing block. A shaping core rod initial guide block is further installed at the end close to the long-stroke air cylinder, and the shaping core rod initial guide block is installed on the outer side of the positioning block. The steel pipe to be shaped is positioned through the positioning block, the shaping core rod is driven by the long-stroke air cylinder to penetrate through the shaping core rod initial guide block to adjust the inner hole diameter of the steel pipe to be shaped on the positioning block, and therefore shaping of the punched steel pipe to be shaped is completed, and the steel pipe shaping device is simple in structure, low in manufacturing and installing cost and convenient to operate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to steel pipe shaping technical field, concretely relates to a punch after shaping steel pipe inner diameter shaping device. BACKGROUND

[0002] In the field of steel pipe processing, especially in the post-punching treatment process of the steel pipe to be shaped, due to the stress release or material rebound of the punching process, the inner diameter of the steel pipe is prone to local deformation or hole diameter deviation, which seriously affects the subsequent assembly precision and use performance. The traditional steel pipe inner diameter shaping technology mainly relies on mechanical reaming or hydraulic orthopedic device, and the existing device usually adopts a multi-stage hydraulic system or a complex transmission mechanism, resulting in a large equipment size, high manufacturing cost and difficult maintenance. For example, some hydraulic shaping equipment needs to be equipped with a high-pressure pump station and a precision guide mechanism, which not only occupies space, but also has high requirements for the operating environment.

[0003] The Chinese patent with publication number CN216372440U discloses an inner diameter trimming device for rubber pipe processing, relating to the technical field of rubber pipe. The inner diameter trimming device for rubber pipe processing includes a main plate, a mounting plate is arranged on the right side of the main plate, two horizontal rods are fixedly connected to the left side surface of the mounting plate, the left ends of the two horizontal rods slide through the right side surface of the main plate, a bottom plate is arranged on the left side of the main plate, the right side surface of the bottom plate is fixedly connected with the left ends of the two horizontal rods, an electric motor is fixedly connected to the right side surface of the mounting plate, a rotating shaft is fixedly connected to the output end of the electric motor, a threaded sleeve is arranged on the right side of the rotating shaft, and a fixed frame is rotatably sleeved on the outer surface of the threaded sleeve. The inner diameter trimming device for rubber pipe processing can trim the inner diameter of pipes with different diameters by setting the threaded sleeve, threaded rod, bidirectional threaded shaft and clamping plate, which solves the problem of slow trimming efficiency of existing rubber pipe trimming devices and the inability to adapt to pipes with different diameters. The above-mentioned device has insufficient strength, poor durability, limited adaptability and high cost when processing high-strength materials such as steel pipes to be shaped. Therefore, it is urgent for technicians in the field to solve the above technical problems. SUMMARY

[0004] The utility model solves the problem of insufficient strength, poor durability, limited adaptability and high cost of the above-mentioned device in the prior art when processing high-strength materials such as steel pipes to be shaped.

[0005] The technical scheme adopted by the utility model has the advantages of:

[0006] The utility model provides a kind of hole diameter of steel pipe to be shaped after punching is shaped device, for the hole diameter correction of the steel pipe to be shaped caused by change in processing process, including long-stroke cylinder, shaping mandrel, bottom plate and locating block connected in turn, the first end close to the bottom plate is equipped with the locating block with the tail end of the bottom plate, the first end of the long-stroke cylinder is equipped with the shaping mandrel, and the long-stroke cylinder is installed on the bottom plate by cylinder fixed block, and shaping mandrel initial guide block is also installed close to one end of the long-stroke cylinder, and the shaping mandrel initial guide block is installed outside the locating block.

[0007] By using the above technical scheme, the internal hole diameter of the steel pipe to be shaped can be accurately adjusted by using the long-stroke cylinder to push the shaping mandrel. Compared with manual or semi-automatic methods, this method can provide higher control accuracy to ensure that the hole diameter size meets the requirements. The device uses a pneumatic driving mode, so that the entire shaping process can be automatically operated. This not only improves work efficiency and reduces manual intervention, but also ensures the consistency of product quality. The device is provided with a shaping mandrel initial guide block, which helps to maintain the correct position and direction of the mandrel during the shaping process, thereby avoiding product defects caused by inaccurate positioning. At the same time, the design of the bottom plate and the locating block enhances the overall stability and reliability of the equipment. Although specific information is not mentioned, according to the description, the device can adapt to steel pipes to be shaped with different diameters and lengths by replacing shaping mandrels of different specifications, improving the versatility and flexibility of the equipment.

[0008] Further, the bottom plate is also provided with positioning hole one and positioning hole two, the size of the positioning hole one is matched with the shaping mandrel initial guide block, and the size of the positioning hole two is matched with the locating block.

[0009] By using the above technical scheme, the position of the shaping mandrel can be ensured to be consistent every time by accurately matching the positioning hole one and the shaping mandrel initial guide block, thereby improving the positioning accuracy during the inner diameter shaping process. This helps to achieve higher quality product output. The use of positioning hole two and locating block can increase the stability of the entire device, especially when performing high-precision operations, to reduce any slight movement or vibration that may affect the quality of the final product. With specially designed positioning holes, it is easier and faster to install and replace components such as the shaping mandrel initial guide block and the locating block. The operator can quickly and accurately complete the assembly or maintenance of the equipment without complex debugging. Since each component has a clear and fixed relative position relationship, each processing process has high consistency and repeatability. This is crucial for ensuring the uniformity of product quality in mass production.

[0010] Further, the top of the locating block is provided with a V-shaped groove and a fixed screw hole, and the locating block is installed in the positioning hole two through the fixed screw hole.

[0011] By adopting the above technical scheme, the V-shaped groove can provide an accurate positioning reference surface, especially when used with cylindrical or similar shaped workpieces. By stabilizing and positioning the workpiece through two contact points, it reduces deviation, thereby improving machining accuracy. The design of the V-shaped groove allows it to be suitable for workpieces of different diameters, and only needs to adjust the position of the workpiece in the V-shaped groove to achieve effective clamping of various specifications of workpieces, increasing the application range of the equipment. By directly installing the positioning block into the positioning hole two through the fixing screw hole, not only does it simplify the installation process, but it also ensures the accuracy and stability of the positioning block position, reducing assembly time. The presence of the fixing screw hole allows the positioning block to be securely fixed to the bottom plate, avoiding position changes due to vibration or other external forces, improving the safety and consistency of the operation process. When the positioning block needs to be replaced or repaired, it can be easily disassembled by loosening the fixing screw, which is convenient and does not affect the overall production efficiency.

[0012] Further, the gas cylinder fixing block and the shaping mandrel initial guide block are provided with a guide hole matched with the shaping mandrel.

[0013] By adopting the above technical scheme, the guide hole provides an accurate path for the shaping mandrel, ensuring that it can move within the predetermined track, thereby improving the positioning accuracy of the entire system. This is particularly important for application scenarios that require high precision operations. By setting the guide hole, the shaking and deviation of the shaping mandrel during movement can be effectively reduced, ensuring that its movement trajectory is more stable and smooth, which helps to improve the processing quality and consistency. The presence of the guide hole can reduce the friction and wear between the shaping mandrel and other components, especially when these holes are precisely machined to match the size of the shaping mandrel. This not only reduces maintenance requirements, but also prolongs the service life of related components. With the design of the guide hole, installing and adjusting the shaping mandrel becomes more simple and efficient. Simply insert the shaping mandrel into the corresponding guide hole to complete the initial positioning, without the need for complex calibration steps.

[0014] Further, the shaping mandrel is the same size as the piston rod of the long-stroke cylinder, and the shaping mandrel is driven by the long-stroke cylinder to pass through the steel pipe to be shaped.

[0015] By adopting the above technical scheme, since the sizing mandrel and the piston rod are of consistent size, they can be directly connected or tightly matched through a simple adapter, intermediate conversion links are reduced, force transmission efficiency is improved, the response speed of the entire system is faster, and consistent size helps to ensure accurate positioning and movement of the sizing mandrel during movement. This is particularly important for processes that require high-precision operations, such as steel pipe sizing operations, which can ensure the consistency and accuracy of the sizing effect, without the need for complex conversion mechanisms to adapt to components of different sizes, simplifying overall mechanical design, reducing manufacturing costs and maintenance difficulty, and direct matching design reducing looseness or gaps between components, improving system stability and reliability during operation, avoiding vibration or other instability factors caused by component mismatch, and the same size of the sizing mandrel and the piston rod means that they can more evenly share the applied force, reducing local stress concentration, thereby prolonging equipment service life and reducing the risk of failure caused by overload or wear.

[0016] Further, a sizing mandrel limiting block is also arranged on the end of the base plate away from the long-stroke cylinder, and the sizing mandrel limiting block is fixed on the base plate by bolts.

[0017] By adopting the above technical scheme, the sizing mandrel limiting block provides a clear physical stop point for the sizing mandrel, ensuring that it does not exceed the predetermined working range. This is particularly important for operations that require precise control of sizing position and force, as it can prevent product damage or equipment failure caused by excessive advancement. The presence of the limiting block prevents accidental movement of the sizing mandrel due to system failure, improving the safety performance of the entire system and protecting operators from potential harm. The limiting block can be easily adjusted according to different specifications or types of steel pipes by bolts to adapt to different processing needs. This method is not only convenient and fast, but also reduces adjustment time and improves production efficiency. The firm connection between the limiting block and the base plate enhances the rigidity and stability of the overall structure, reducing the possibility of vibration or deviation during operation and helping to maintain working accuracy.

[0018] The utility model has the advantages of the following beneficial effects:

[0019] 1. The utility model adopts a sizing mandrel arranged at the first end of the piston rod of the long-stroke cylinder, the long-stroke cylinder drives the inner diameter sizing mandrel to pass through the steel pipe to be shaped placed on the positioning block and performs shaping, the long-stroke cylinder drives the sizing mandrel to reset after shaping is completed, and the steel pipe to be shaped is continuously shaped for the second time, the shaping efficiency of the inner diameter of the steel pipe to be shaped is improved, at the same time, the precise travel limit is provided through the sizing mandrel limiting block, it is ensured that the sizing mandrel does not exceed the predetermined working range, thereby avoiding product damage or equipment failure caused by excessive advancement, preventing accidental movement caused by system failure, and increasing the safety of operation.

[0020] 2. The utility model discloses a limiting block fixed on the bottom plate, enhances the rigidity and stability of the overall structure, reduces the vibration or deviation phenomenon in the operation process, helps to keep the working accuracy, and reduces the impact and wear between components, thereby prolonging the service life of the key components.

[0021] 3. The bolt fixing mode of the limiting block makes it possible to easily adjust according to different specifications or types of steel pipes, adapts to different processing requirements, and facilitates regular inspection, adjustment or replacement of the limiting block without complex disassembly steps, simplifies the maintenance work, improves the consistency of production efficiency and product quality. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0023] Figure 2 It is an exploded schematic diagram of the overall structure of the utility model.

[0024] Figure 3 It is a schematic diagram of the structure of the positioning hole.

[0025] Among them: 1 - long stroke cylinder;2 - shaping mandrel initial guide block;21 - guide through hole;3 - shaping mandrel;4 - limiting block;5 - steel pipe to be shaped;6 - mandrel limiting block;7 - V-shaped groove;8 - bottom plate;81 - positioning hole one;82 - positioning hole two;9 - cylinder fixing block. DETAILED DESCRIPTION

[0026] The utility model will be further described in detail below in combination with the drawings and specific preferred embodiments.

[0027] In the description of the utility model, it is understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, structure and operation, "first", "second" and the like do not represent the importance of the parts, so it cannot be understood as a limitation on the utility model. The specific dimensions used in this embodiment are only for example to illustrate the technical scheme, and do not limit the protection scope of the utility model.

[0028] REFERENCE Figure 1 , Figure 2 and Figure 3The utility model discloses a kind of shaping device for inner diameter of steel pipe after punching, a shaping device for inner diameter of steel pipe after punching, including long-stroke cylinder 1, shaping mandrel initial guide block 2, shaping mandrel 3, positioning block 4, steel pipe 5 to be shaped, mandrel limiting block 6, bottom plate 8 and cylinder fixed block 9 connected in sequence;Including long-stroke cylinder 1, shaping mandrel 3, bottom plate 8 and positioning block 4.First, long-stroke cylinder 1 is firmly installed on bottom plate 8 by cylinder fixed block 9.To ensure the initial positioning accuracy of shaping mandrel 3, shaping mandrel initial guide block 2 is also installed on the end close to long-stroke cylinder 1, and the guide through-hole 21 thereon is matched with shaping mandrel 3, to guide shaping mandrel 3 to enter steel pipe 5 to be shaped smoothly.

[0029] Bottom plate 8 is designed with positioning hole one 81 and positioning hole two 82, wherein positioning hole one 81 size is matched with the guide block of shaping mandrel 3, and positioning hole two 82 is adapted to positioning block 4.Positioning block 4 is provided with V-shaped groove 7 on top, and fixed screw hole, so that positioning block 4 can be fixed in positioning hole two 82 of bottom plate 8 by bolt, to provide stable support for steel pipe 5 to be shaped.

[0030] In particular, shaping mandrel limiting block is arranged at the end away from long-stroke cylinder 1, which is fixed on bottom plate 8 by bolt, to limit the maximum stroke of shaping mandrel 3, prevent unnecessary damage or equipment failure caused by excessive advancement.In addition, the size of shaping mandrel 3 is consistent with the piston rod of long-stroke cylinder 1, to ensure that shaping mandrel 3 can pass through steel pipe 5 to be shaped smoothly and accurately under the drive of long-stroke cylinder 1, to effectively shape the inner diameter of steel pipe.In the whole process, shaping mandrel 3 accurately penetrates into the inside of steel pipe 5 to be shaped under the push of long-stroke cylinder 1 through a series of accurately designed guide mechanisms such as guide through-hole 21 in shaping mandrel initial guide block 2, to realize accurate correction of the inner diameter of steel pipe.By adjusting the position of positioning block 4, the processing needs of steel pipes of different specifications can be adapted, to improve the flexibility and practicability of the device.In this way, both the high quality of products and the production efficiency are improved;

[0031] Steel pipe 5 to be shaped is a steel pipe with wall thickness of 0.5 millimeter, inner diameter less than 26 millimeter and length greater than 500 millimeter, which is processed by punching or slotting, and the inner diameter size will be smaller due to the thin wall thickness, affecting the motor assembly in the steel pipe.Long-stroke cylinder 1 is a common cylinder with two gas inlets, and the two gas inlets A and B are controlled by solenoid valve, and cannot intake gas at the same time.

[0032] Shaping mandrel 3 is a round bar with diameter meeting the requirements of steel pipe inner diameter;

[0033] The shaping mandrel initial positioning block 2 is provided with a hole for slidingly matching with the shaping mandrel 3 and positioning the shaping mandrel 3; the steel pipe positioning block 4 and the steel pipe positioning block 7 are respectively provided with V-shaped grooves for positioning the steel pipe 5 to be shaped.

[0034] Meanwhile, the long-stroke cylinder body is connected with the upper end of the cylinder fixing block 9 through bolts; at the same time, the lower end of the cylinder fixing block 9 is fixed on the bottom plate 8 through bolts. The bottom plate 8 is further provided with the shaping mandrel initial positioning block 2, the steel pipe positioning block 4, the mandrel limiting block 6 and the steel pipe positioning block 7 which are connected with the bottom plate 8 through bolts and are positioned in the cavity. The air inlet B of the long-stroke cylinder 1 is supplied with air, the shaping mandrel 3 is pulled by the long-stroke cylinder 1 and kept in the hole of the shaping mandrel initial positioning block 2, and is in the initial position; the steel pipe 5 to be shaped is placed on the V-shaped grooves of the steel pipe positioning block 4 and the steel pipe positioning block 7; the air inlet A of the long-stroke cylinder 1 starts to supply air, the long-stroke cylinder 1 starts to work, the shaping mandrel 3 is pushed into the steel pipe to be shaped by the long-stroke cylinder 1 under the guiding action of the shaping mandrel initial positioning block 2; until the shaping mandrel 3 is pushed to contact with the mandrel limiting block 6 by the long-stroke cylinder 1, the long-stroke cylinder 1 stops pushing, and the first shaping is completed; the air inlet A of the long-stroke cylinder 1 is supplied with air, the long-stroke cylinder 1 starts to work again, the shaping mandrel 3 is pulled by the long-stroke cylinder 1, until the shaping mandrel 3 is pulled back to the initial state in the shaping mandrel initial positioning block 2, and the cylinder stops, and the second shaping is completed; the shaped steel pipe is taken out, and the inner diameter of the steel pipe to be shaped is shaped. The structure is relatively simple, the manufacturing and installation cost is low, and the operation is convenient.

[0035] The above describes the preferred embodiments of the present application, but the present application is not limited to the specific details of the above embodiments, and various equivalent transformations can be made to the technical solutions of the present application within the technical concept of the present application, and these equivalent transformations all belong to the protection scope of the present application.

Claims

1. A device for correcting the hole diameter of a steel pipe (5) to be shaped after piercing, which is used to correct the hole diameter of a steel pipe (5) to be shaped, which has a changed hole diameter due to a machining process, characterized in that: The application relates to a long-stroke cylinder (1), a shaping mandrel (3), a bottom plate (8) and a positioning block (4) connected in sequence, the positioning block (4) is arranged at the head end of the bottom plate (8) and the tail end of the bottom plate (8), the shaping mandrel (3) is arranged at the head end of the long-stroke cylinder (1), the long-stroke cylinder (1) is arranged on the bottom plate (8) through a cylinder fixing block (9), and a shaping mandrel initial guide block (2) is arranged at one end of the long-stroke cylinder (1), and the shaping mandrel initial guide block (2) is arranged outside the positioning block (4).

2. The device for inner diameter shaping of a post-piercing to-be-shaped steel pipe according to claim 1, characterized in that: Positioning hole one (81) and positioning hole two (82) are further arranged on the bottom plate (8), the size of the positioning hole one (81) is matched with the shaping mandrel initial guide block (2), and the size of the positioning hole two (82) is matched with the positioning block (4).

3. The device for inner diameter shaping of the post-piercing steel pipe to be shaped according to claim 2, characterized in that: A V-shaped groove (7) and a fixing screw hole are arranged at the top of the positioning block (4), and the positioning block (4) is arranged in the positioning hole two (82) through the fixing screw hole.

4. The device for inner diameter shaping of a post-piercing to-be-shaped steel pipe according to claim 1, characterized in that: A guide through hole (21) matched with the shaping mandrel (3) is arranged on the cylinder fixing block (9) and the shaping mandrel initial guide block (2).

5. The device for inner diameter shaping of the post-piercing steel pipe to be shaped according to claim 4, characterized in that: The shaping mandrel (3) is matched with the piston rod of the long-stroke cylinder (1), and the shaping mandrel (3) is driven by the long-stroke cylinder (1) to pass through the steel pipe (5) to be shaped.

6. The device for inner diameter shaping of a post-piercing to-be-shaped steel pipe according to claim 1, characterized in that: A shaping mandrel (3) limiting block is further arranged at one end of the bottom plate (8) away from the long-stroke cylinder (1), and the shaping mandrel (3) limiting block is fixed on the bottom plate (8) through bolts.

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