Hydraulic steel pipe head shrinking machine

Abstract

The utility model relates to the technical field of head shrinking machines, in particular to a hydraulic type steel pipe head shrinking machine which is provided with a machine table, a steel pipe feeding unit, a steel pipe clamping unit, a steel pipe head shrinking unit and a steel pipe rotating unit are arranged on the machine table, the steel pipe rotating unit comprises rotating rollers arranged on the steel pipe feeding unit, and every two rotating rollers form a group; the multiple sets of rotating rollers are arranged at intervals in the axial direction, and rotating drivers are arranged on the rotating rollers. By arranging the steel pipe rotating unit, the steel pipe can be rotated and compressed for multiple times in the head shrinking process, so that it is ensured that the head shrinking part is smoother, and the common folding and wrinkling problems of a traditional head shrinking machine are effectively avoided; according to the device, the steps of feeding, clamping, head shrinking, rotating and the like of the steel pipe can be accurately controlled, it is ensured that operation is accurate each time, the production efficiency and the product quality are improved, manual intervention is reduced, the labor intensity is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tube shrinking machines, in particular to a hydraulic steel tube shrinking machine. Background Art

[0002] A steel pipe reduction machine, also known as a head shrinking machine, is a specialized device designed for shrinking the end faces of pipe fittings. Its primary function is to use axial force to force the steel pipe into a deformation zone, thereby producing tangential plastic deformation within the deformation zone, ultimately reducing the diameter of the pipe end to the desired size. Widely used for forming connections such as pipe splices and water pipes, steel pipe reduction machines are an essential and ideal tool for the pipeline connection industry. Through precise mechanical control and powerful power output, they can easily shrink steel pipes of various specifications.

[0003] However, when traditional shrinking machines compress steel pipes, the steel pipes are often subjected to uneven force during the shrinking process, which makes the shrunken parts prone to defects such as folding and wrinkling. This not only affects the appearance of the steel pipe after shrinking, but more importantly, it poses a potential threat to the structural strength and sealing performance of the steel pipe, thereby reducing the overall quality of the product. In addition, many shrinking machines require manual loading, and operators need to manually place the steel pipes into the compressor, which is labor-intensive and has low production efficiency. Summary of the Invention

[0004] In order to solve the above problems, the present application provides a hydraulic steel pipe shrinking machine, which is provided with a machine platform, a steel pipe feeding unit is provided on the machine platform, a steel pipe clamping unit is provided on the steel pipe feeding unit, and the steel pipe clamping unit is used to clamp the steel pipe. The steel pipe feeding unit can drive the steel pipe to move back and forth along the axial direction of the steel pipe. A steel pipe shrinking unit is provided in the moving direction of the steel pipe feeding unit, and a steel pipe rotating unit is provided below the steel pipe clamping unit. The steel pipe rotating unit includes rotating rollers provided on the steel pipe feeding unit, and the rotating rollers are grouped in pairs, and multiple groups of rotating rollers are arranged at intervals along the axial direction, and a rotating driver is provided on the rotating rollers.

[0005] In one embodiment, the rotating rollers are arranged on both sides of the steel pipe clamping unit along the axial direction, and the steel pipe clamping unit is located between the two rotating rollers in the same group.

[0006] In one embodiment, the steel pipe shrinking unit is provided with a shrinking support plate, a shrinking inner core is provided on the shrinking support plate, a shrinking outer sleeve is provided on one side of the shrinking inner core, the shrinking outer sleeve is installed on a shrinking hydraulic cylinder, and the shrinking hydraulic cylinder is connected to the shrinking support plate.

[0007] In one embodiment, the shrinking core is composed of a plurality of steel pipe shrinking blocks, which are movably mounted on the shrinking support plate. The steel pipe shrinking blocks are fan-shaped, and the contact surface between the shrinking core and the shrinking outer sleeve is conical.

[0008] In one embodiment, the steel pipe loading unit includes a slide rail, a slider, and a slider driver. The slide rail is set on the machine platform, the slider is set on the slide rail, and a clamping support plate is set on the slider. The slider driver can drive the slider to move back and forth along the slide rail.

[0009] In one embodiment, the steel pipe clamping unit includes a door-shaped frame provided on the clamping support plate, wherein a clamping jaw is provided in the door-shaped frame, and the clamping jaw is connected to a clamping jaw driver.

[0010] In one embodiment, the steel pipe clamping unit and the steel pipe rotating unit are arranged on the clamping support plate.

[0011] In one embodiment, the rotation driver is a motor.

[0012] The beneficial effects of the present invention are:

[0013] The present application discloses a hydraulic steel pipe shrinking machine comprising a machine platform, equipped with a steel pipe feeding unit, a steel pipe clamping unit, a steel pipe shrinking unit, and a steel pipe rotating unit. The steel pipe rotating unit comprises rotating rollers mounted on the steel pipe feeding unit, with the rotating rollers arranged in pairs, and multiple groups of rotating rollers spaced axially. Each rotating roller is equipped with a rotary actuator. When a steel pipe is clamped and moved to the position of the steel pipe shrinking unit, a controller controls the steel pipe shrinking unit to begin operation, compressing one end of the steel pipe to form the desired shrinking shape. During the shrinking process, the controller controls the shrinking progress to ensure shrinking quality. When a portion of the steel pipe is completely shrunken, the controller controls the steel pipe feeding unit to retract the steel pipe to a predetermined position. The steel pipe clamping unit releases the steel pipe, allowing it to fall onto the steel pipe rotating unit, which then rotates the steel pipe about its axis. After the steel pipe has completed its rotation, the steel pipe clamping unit re-clamps the steel pipe, and the steel pipe feeding unit again delivers the steel pipe to the steel pipe shrinking unit. The controller controls the steel pipe shrinking unit again to shrink the steel pipe, repeatedly rotating and compressing it until the entire portion of the steel pipe that needs to be shrunk is shrunk, and the shrunk area is smooth, without wrinkles or folds. By setting up the steel pipe rotation unit, the steel pipe can be rotated and compressed multiple times during the shrinking process, thereby ensuring a smoother shrunk area and effectively avoiding the folding and wrinkling problems common in traditional shrinking machines. The device can accurately control the steps of feeding, clamping, shrinking and rotating the steel pipe, ensuring that each operation is accurate, improving production efficiency and product quality, reducing manual intervention, reducing labor intensity, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is the front view of the utility model;

[0016] Figure 3 for Figure 1 Partial schematic diagram at point A in the middle;

[0017] Explanation of symbols in the figure:

[0018] 1. Machine;

[0019] 2. Steel pipe loading unit; 21. Slide rail; 22. Slider; 23. Clamping support plate;

[0020] 3. Steel pipe clamping unit; 31. Door frame; 32. Clamping jaws; 33. Clamping jaw drive;

[0021] 4. Steel pipe shrinking unit; 41. Shrinking support plate;

[0022] 42. Shrinkage core; 421. Steel pipe shrinkage block;

[0023] 43. Shrinking head jacket; 44. Shrinking head hydraulic cylinder;

[0024] 5. Steel pipe rotating unit; 51. Rotating roller; 52. Rotating driver; DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0026] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0027] like Figure 1-3As shown, a hydraulic steel pipe shrinking machine is provided with a machine platform 1, a steel pipe feeding unit 2 is provided on the machine platform 1, a steel pipe clamping unit 3 is provided on the steel pipe feeding unit 2, the steel pipe clamping unit 3 is used to clamp the steel pipe, the steel pipe feeding unit 2 can drive the steel pipe to move back and forth along the axial direction of the steel pipe, a steel pipe shrinking unit 4 is provided in the moving direction of the steel pipe feeding unit 2, a steel pipe rotating unit 5 is provided below the steel pipe clamping unit 3, the steel pipe rotating unit 5 includes rotating rollers 51 provided on the steel pipe feeding unit 2, the rotating rollers 51 are grouped in pairs, and multiple groups of the rotating rollers 51 are spaced apart along the axial direction, and a rotating driver 52 is provided on the rotating rollers 51.

[0028] Specifically, the hydraulic steel pipe shrinking machine primarily consists of a machine platform 1, a steel pipe feeding unit 2, a steel pipe clamping unit 3, a steel pipe shrinking unit 4, and a steel pipe rotating unit 5. Initially, the steel pipe clamping unit 3 is loosened, the steel pipe feeding unit 2 is in its starting position, and the rotating rollers 51 of the steel pipe rotating unit 5 are stationary. The operator places the steel pipe to be shrunken on the steel pipe clamping unit 3. The steel pipe clamping unit 3 clamps the steel pipe, ensuring that it does not slip or rotate during the shrinking process. Under the control of a controller, the steel pipe feeding unit 2 begins to move along the steel pipe's axial direction toward the steel pipe shrinking unit 4. Once the steel pipe is clamped and moved to the position of the steel pipe shrinking unit 4, the controller activates the steel pipe shrinking unit 4, compressing one end of the steel pipe to form the desired shrinking shape. During the shrinking process, the controller controls the shrinking progress to ensure quality. Once a portion of the steel pipe has been shrunken, the controller controls the steel pipe feeding unit 2 to retract the steel pipe to the desired position. The steel pipe clamping unit 3 releases the steel pipe, and the steel pipe falls onto the steel pipe rotating unit 5. The rotation driver 52 of the steel pipe rotating unit 5 starts, driving the rotating roller 51 to rotate, and then driving the steel pipe to rotate around its axis. After the rotation of the steel pipe is completed, the steel pipe clamping unit 3 re-clamps the steel pipe, and the steel pipe feeding unit 2 again sends the steel pipe to the position of the steel pipe shrinking unit 4. The controller controls the steel pipe shrinking unit 4 again to shrink the steel pipe, repeating the rotation and compression many times until the entire part of the steel pipe that needs to be shrunk has completed the shrinking operation, and the shrunk part is smooth, without wrinkles and folds. When the steel pipe is completely shrunk, the controller controls the steel pipe feeding unit 2 to return the steel pipe to the starting position, and the steel pipe clamping unit 3 releases the steel pipe. The operator can remove the shrunk steel pipe from the equipment for subsequent processing or storage. By setting up the steel pipe rotation unit 5, the steel pipe can be rotated and compressed multiple times during the shrinking process, thereby ensuring that the shrinking part is smoother and effectively avoiding the folding and wrinkling problems common in traditional shrinking machines; the device can accurately control the steps of loading, clamping, shrinking and rotating the steel pipe to ensure that each operation is accurate, improve production efficiency and product quality, reduce manual intervention, reduce labor intensity, and improve production efficiency.

[0029] like Figure 1 、 3 As shown, the rotating rollers 51 are arranged on both sides of the steel pipe clamping unit 3 along the axial direction, and the steel pipe clamping unit 3 is located in the middle of the two rotating rollers 51 in the same group.

[0030] Specifically, the rotary driver 52 drives the rotating rollers 51 to rotate. Because the rotating rollers 51 are axially positioned on either side of the steel pipe clamping unit 3, and the steel pipe clamping unit 3 is located between two rotating rollers 51 in the same group, the rotation of the rotating rollers 51 causes the steel pipe to rotate around its axis by a certain angle. The axial positioning of the rotating rollers 51 on either side of the steel pipe clamping unit 3 ensures the stability of the steel pipe during clamping and rotation, preventing it from shaking or shifting during rotation.

[0031] like Figure 1 、 2 As shown, the steel pipe shrinking unit 4 is provided with a shrinking support plate 41, a shrinking inner core 42 is provided on the shrinking support plate 41, a shrinking outer sleeve 43 is provided on one side of the shrinking inner core 42, and the shrinking outer sleeve 43 is installed on a shrinking hydraulic cylinder 44, and the shrinking hydraulic cylinder 44 is connected to the shrinking support plate 41.

[0032] Specifically, in the steel pipe shrinking unit 4, the shrinking support plate 41 supports and fixes the shrinking core 42. The shrinking outer sleeve 43 is mounted on the shrinking hydraulic cylinder 44. When the shrinking hydraulic cylinder 44 is in operation, it pushes the shrinking outer sleeve 43 toward the shrinking core 42, squeezing the shrinking core 42 toward the center, buckling and compressing the steel pipe, and the outer surface of the steel pipe is buckled at the same time.

[0033] like Figure 2 As shown, the shrinking core 42 is composed of a plurality of steel pipe shrinking blocks 421, which are movably mounted on the shrinking support plate 41. The steel pipe shrinking blocks 421 are fan-shaped, and the contact surface between the shrinking core 42 and the shrinking sleeve 43 is conical.

[0034] Specifically, in the steel pipe shrinking machine, the shrinking core 42 is composed of a plurality of steel pipe shrinking blocks 421 movably mounted on the shrinking support plate 41. The steel pipe shrinking blocks 421 are fan-shaped. When they are combined together, they can form a complete cone shape that matches the shrinking outer sleeve 43. When the shrinking hydraulic cylinder 44 pushes the shrinking outer sleeve 43 toward the shrinking core 42, the conical surface of the shrinking outer sleeve 43 will contact the conical surface of the steel pipe shrinking block 421, and gradually compress one end of the steel pipe into the desired shape.

[0035] like Figure 1As shown, the steel pipe loading unit 2 includes a slide rail 21, a slider 22, and a slider driver. The slide rail 21 is arranged on the machine 1, and the slider 22 is arranged on the slide rail 21. A clamping support plate 23 is provided on the slider 22. The slider driver can drive the slider 22 to move back and forth along the slide rail 21.

[0036] Specifically, the slide rail 21 is firmly mounted on the machine platform 1, and the slider 22 is mounted on the slide rail 21 and is capable of smoothly reciprocating on the slide rail 21. A clamping support plate 23 is mounted on the slider 22, and the steel pipe clamping unit 3 and the steel pipe rotating unit 5 are mounted on the clamping support plate 23. When loading is required, the slider driver starts operating, causing the slider to move along the slide rail 21. The movement of the slider 22 drives the clamping support plate 23 and the steel pipe clamped thereon to move together, allowing the steel pipe to be accurately transported to the steel pipe shrinking unit 4 for shrinking.

[0037] like Figure 1 As shown, the steel pipe clamping unit 3 includes a door-shaped frame 31 provided on the clamping support plate 23 , a clamping claw 32 is provided in the door-shaped frame 31 , and the clamping claw 32 is connected to a clamping claw driver 33 .

[0038] Specifically, a portal frame 31 is securely mounted on the clamping support plate 23, while a clamping jaw 32 is mounted within the portal frame 31, directly gripping the steel pipe. A clamping jaw driver 33 is connected to the clamping jaw 32, providing power for the clamping jaw to open and close, gripping or releasing the steel pipe. During operation of the steel pipe shrinking machine, the clamping jaw driver 33 activates, driving the clamping jaw 32 to grip the steel pipe.

[0039] The present application discloses a hydraulic steel pipe shrinking machine comprising a machine platform 1, equipped with a steel pipe feeding unit 2, a steel pipe clamping unit 3, a steel pipe shrinking unit 4, and a steel pipe rotating unit 5. The steel pipe rotating unit 5 includes rotating rollers 51 disposed on the steel pipe feeding unit 2. The rotating rollers 51 are arranged in pairs, with multiple groups of rotating rollers 51 spaced apart along the axial direction. A rotating driver 52 is provided on each rotating roller 51. When a steel pipe is clamped and moved to the position of the steel pipe shrinking unit 4, a controller controls the steel pipe shrinking unit 4 to begin operation, compressing one end of the steel pipe to form the desired shrinking shape. During the shrinking process, the controller controls the shrinking progress to ensure shrinking quality. When a portion of the steel pipe is completely shrunken, the controller controls the steel pipe feeding unit 2 to drive the steel pipe back to a predetermined position. The steel pipe clamping unit 3 releases the steel pipe, causing it to fall onto the steel pipe rotating unit 5, which then rotates the steel pipe about its axis. After the rotation of the steel pipe is completed, the steel pipe clamping unit 3 re-clamps the steel pipe, and the steel pipe feeding unit 2 again sends the steel pipe to the position of the steel pipe shrinking unit 4. The controller again controls the steel pipe shrinking unit 4 to shrink the steel pipe, repeating the rotation and compression multiple times until the entire part of the steel pipe that needs to be shrunk has completed the shrinking operation, and the shrunken part is smooth, without wrinkles and folds. By setting up the steel pipe rotating unit 5, it is possible to rotate and compress the steel pipe multiple times during the shrinking process, thereby ensuring that the shrunken part is smoother, effectively avoiding the folding and wrinkling problems common in traditional shrinking machines; the device can accurately control the steps of feeding, clamping, shrinking and rotating the steel pipe, ensuring that each operation is accurate, improving production efficiency and product quality, reducing manual intervention, reducing labor intensity, and improving production efficiency.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0041] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

Claims

1. A hydraulic steel pipe shrinking machine, comprising a machine platform (1), a steel pipe feeding unit (2) being provided on the machine platform (1), a steel pipe clamping unit (3) being provided on the steel pipe feeding unit (2), the steel pipe clamping unit (3) being used for clamping the steel pipe, the steel pipe feeding unit (2) being capable of driving the steel pipe to move back and forth along the axial direction of the steel pipe, a steel pipe shrinking unit (4) being provided in the moving direction of the steel pipe feeding unit (2), and characterized in that: A steel pipe rotating unit (5) is provided below the steel pipe clamping unit (3), and the steel pipe rotating unit (5) includes rotating rollers (51) provided on the steel pipe feeding unit (2), wherein the rotating rollers (51) are arranged in groups of two, and multiple groups of the rotating rollers (51) are spaced apart along the axial direction, and a rotating driver (52) is provided on the rotating rollers (51).

2. The hydraulic steel pipe shrinking machine according to claim 1, characterized in that: The rotating rollers (51) are arranged on both sides of the steel pipe clamping unit (3) along the axial direction, and the steel pipe clamping unit (3) is located in the middle of the two rotating rollers (51) in the same group.

3. The hydraulic steel pipe shrinking machine according to claim 1, characterized in that: The steel pipe shrinking unit (4) is provided with a shrinking support plate (41), a shrinking inner core (42) is provided on the shrinking support plate (41), a shrinking outer shell (43) is provided on one side of the shrinking inner core (42), and the shrinking outer shell (43) is installed on a shrinking hydraulic cylinder (44), and the shrinking hydraulic cylinder (44) is connected to the shrinking support plate (41).

4. The hydraulic steel pipe shrinking machine according to claim 3, characterized in that: The shrinking inner core (42) is composed of a plurality of steel pipe shrinking blocks (421), and the steel pipe shrinking blocks (421) are movably mounted on the shrinking support plate (41). The steel pipe shrinking blocks (421) are fan-shaped, and the contact surface between the shrinking inner core (42) and the shrinking outer sleeve (43) is conical.

5. The hydraulic steel pipe shrinking machine according to claim 1, characterized in that: The steel pipe feeding unit (2) includes a slide rail (21), a slider (22), and a slider driver. The slide rail (21) is arranged on the machine (1), the slider (22) is arranged on the slide rail (21), a clamping support plate (23) is arranged on the slider (22), and the slider driver can drive the slider (22) to move back and forth along the slide rail (21).

6. The hydraulic steel pipe shrinking machine according to claim 5, characterized in that: The steel pipe clamping unit (3) comprises a door-shaped frame (31) arranged on the clamping support plate (23), a clamping claw (32) is arranged in the door-shaped frame (31), and the clamping claw (32) is connected to a clamping claw driver (33).

7. The hydraulic steel pipe shrinking machine according to claim 5, characterized in that: The steel pipe clamping unit (3) and the steel pipe rotating unit (5) are arranged on the clamping support plate (23).

8. The hydraulic steel pipe shrinking machine according to claim 1, characterized in that: The rotation driver (52) is a motor.

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