Die for upsetting steel pipe end hoop
By designing the upsetting mold for steel pipe end hoops and replacing welding with the upsetting process, the integrated production of steel pipe body and end hoops is achieved, solving the operation difficulty and water leakage problems of welding production, and achieving fast, efficient and easy-to-maintain end hoop production.
Patent Information
- Application Number
- CN202421622835.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The existing steel pipe end hoops are difficult to operate, complicated processes and prone to water leakage problems through welding, and are more difficult to repair in the later stage.
A mold for upsetting of steel pipe end hoop is designed, and the mold composed of upper mold block, lower mold block and upsetting head is used to achieve integrated production of steel pipe body and end hoop.
The steel pipe end hoop is fast, efficient and completely eliminates water leakage problems, and it is easier to manage and maintain later.
Smart Images
Figure CN222767231U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of steel pipe production equipment, and in particular relates to a die for upsetting a steel pipe end hoop. Background Art
[0002] An end hoop is made at the end of the steel pipe to facilitate the continuous docking of multiple steel pipes. In the past, steel pipe end hoops were made by welding. The use of welding methods to make end hoops requires relatively high welding technology and is difficult to operate during welding; the welded end hoops must also undergo a water pressure test, which is time-consuming, labor-intensive, and has complicated procedures; even so, the welded end hoops may still leak after long-term use, making later repairs more difficult. How to make an end hoop that is integrated with the pipe system to completely solve the problem of water leakage has become a problem that steel pipe manufacturers have been thinking about. In response to market demand and the shortcomings of previous technologies, our company independently developed and designed a steel pipe end hoop upsetting die, which realizes the integrated production of the steel pipe body and the end hoop, and has achieved relatively satisfactory results. The steel pipe end hoop upsetting die is an important component of the steel pipe end hoop upsetting device. Summary of the invention
[0003] The utility model aims to overcome the shortcomings of the prior art and provide a steel pipe end hoop upsetting die which can integrally form a steel pipe end hoop at the end of the steel pipe, completely prevent the end hoop from leaking and is easy to maintain in the later stage.
[0004] The utility model solves the technical problem through the following technical solutions:
[0005] A die for upsetting a steel pipe end hoop, characterized in that it is composed of an upper die block, a lower die block, and an upsetting press head, the upsetting press head is arranged on an extrusion assembly of a steel pipe end hoop upsetting device, the upper die block and the lower die block are respectively arranged on the upper and lower parts of the clamping assembly of the steel pipe end hoop upsetting device, the upper die block and the lower die block are both rectangular components, and are provided with end hoop forming grooves and semicircular grooves thereon, the upsetting press head is composed of a pressing plate, a liner shaft, and a guide shaft, and the pressing plate, the liner shaft, and the guide shaft are sequentially connected as a whole.
[0006] Moreover, the inner shape of the end hoop forming groove is similar to the outer shape of the steel pipe end hoop.
[0007] Moreover, the radius of the semicircular groove is the same as the outer radius of the steel pipe.
[0008] The advantages and beneficial effects of the utility model are:
[0009] 1. The utility model steel pipe end hoop upsetting die is used for steel pipe end hoop upsetting device to manufacture steel pipe end hoop by upsetting process instead of welding, which is not only fast and efficient, but also can completely prevent the problem of water leakage of end hoop in the later stage, and is easy to manage and maintain in the later stage.
[0010] 2. The utility model has a plurality of specifications for upsetting the steel pipe end hoop mold, which is suitable for making end hoop of steel pipes of various specifications and has a wide application range.
[0011] 3. The utility model has a scientific and reasonable structural design of the mold for upsetting the steel pipe end hoop, and has the advantages of advanced steel pipe end hoop manufacturing technology, fast manufacturing speed, high efficiency, high product quality, fewer manufacturing processes, easy later maintenance, and a wide range of applications. It is a highly innovative mold for upsetting the steel pipe end hoop. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram (axial view) of the utility model;
[0013] Figure 2 Schematic diagram of the upper mold block structure (axial view);
[0014] Figure 3 Schematic diagram of the upper mold block structure (front view);
[0015] Figure 4 for Figure 3 (top view);
[0016] Figure 5 for Figure 3 Left view of
[0017] Figure 6 for Figure 4 AA view;
[0018] Figure 7 Schematic diagram of the lower mold block structure (axial view);
[0019] Figure 8 Schematic diagram of the lower mold block structure (front view);
[0020] Fig. 9 for Figure 8 A top view of
[0021] Fig.10 for Figure 8 Left view of
[0022] Fig.11 for Fig. 9 AA view;
[0023] Fig.12 Schematic diagram of the upsetting head structure (axial view);
[0024] Fig.13 Schematic diagram of the upsetting head structure (axial view);
[0025] Fig.14 Schematic diagram of the upsetting head structure (front view);
[0026] Fig.15 for Fig.14 Left view of
[0027] Fig.16 This is the assembly position diagram of the die for upsetting the steel pipe end hoop;
[0028] Fig.17 It is a structural schematic diagram of a steel pipe end hoop forming part of a steel pipe end hoop upsetting device (axial view);
[0029] Fig.18 The present invention is a schematic structural diagram of the heating part and the loading and unloading part of a steel pipe end hoop upsetting device (axial view).
[0030] Notes on the attached drawings:
[0031] 1- upsetting head, 2- upper die block, 3- lower die block, 4- heating part, 5- steel pipe, 6- end hoop forming groove, 7- semicircular groove, 8- end hoop forming groove, 9- semicircular groove, 10- pressing plate, 11- liner shaft, 12- guide shaft, 13- extrusion assembly, 14- clamping assembly, 15- loading and unloading part, 16- machine base, 17- forming cylinder seat, 18- extrusion forming hydraulic cylinder, 19- clamping cylinder seat, 20- clamping cylinder, 21- supersonic frequency induction heating equipment, 22- loading platform, 23- high frequency induction coil, 24- conveying roller, 25- pipe turner, 26- unloading platform. DETAILED DESCRIPTION
[0032] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not restrictive, and the protection scope of the present invention cannot be limited by them.
[0033] A steel pipe end hoop upsetting die is composed of an upper die block 2, a lower die block 3, and an upsetting head 1. The upsetting head is arranged on an extrusion assembly 13 of the steel pipe end hoop upsetting device. The upper die block and the lower die block are respectively arranged on the upper and lower parts of a clamping assembly 14 of the steel pipe end hoop upsetting device.
[0034] The upper mold block and the lower mold block are both rectangular parts, and are provided with end hoop forming grooves 6, 8, and semicircular grooves 7, 9. The inner shape of the end hoop forming groove is similar to the outer shape of the steel pipe end hoop; the radius of the semicircular groove is the same as the outer radius of the steel pipe.
[0035] The upsetting pressure head is composed of a pressing plate 10, a liner shaft 11, and a guide shaft 12, and the pressing plate, the liner shaft, and the guide shaft are sequentially connected as a whole.
[0036] The upper die block, the lower die block and the upsetting head are available in various specifications. The upper die block can move up and down following the clamping hydraulic cylinder push rod of the clamping assembly of the steel pipe end hoop upsetting device, and cooperate with the lower die block fixed to the bottom surface of the clamping oil cylinder seat to clamp and fix the steel pipe 5 to a predetermined position for extrusion molding.
[0037] The working principle of this utility model:
[0038] The structure of the steel pipe end hoop upsetting device: A steel pipe end hoop upsetting device comprises a loading and unloading part 15, a heating part 4, and a steel pipe end hoop forming part, which are arranged in sequence. The steel pipe end hoop forming part is used to make steel pipe end hoop, and the loading and unloading parts are used to store materials, i.e., to reserve steel pipes, to transport steel pipes to the steel pipe end hoop forming part, and to temporarily store steel pipes with end hoop formed.
[0039] The steel pipe end hoop forming part is composed of a machine base 16, a die (i.e., a die for upsetting the steel pipe end hoop of the utility model), an extrusion assembly, and a clamping assembly. The extrusion assembly and the clamping assembly are both arranged on the machine base, and the die is arranged on the extrusion assembly and the clamping assembly respectively. The extrusion assembly and the clamping assembly are used to provide pressure for the die so as to fix the steel pipe to a predetermined position and make an end hoop at the end of the steel pipe.
[0040] The extrusion assembly is composed of an extrusion molding hydraulic cylinder 18 and a molding cylinder seat 17. The molding cylinder seat is fixedly mounted on the machine base, and the extrusion molding hydraulic cylinder is fixedly mounted on the molding cylinder seat.
[0041] The clamping assembly is composed of a clamping hydraulic cylinder 20 and a clamping cylinder seat 19. The clamping cylinder seat is fixedly mounted on the machine base, and the clamping hydraulic cylinder is fixedly mounted on the clamping cylinder seat. A positioning assembly consisting of a hinge shaft, a support rod, and a positioning plate is arranged on the clamping cylinder seat. During the production process, the positioning plate is flipped to one side of the mold, and the support rod holds the positioning plate. The positioning plate can block the steel pipe conveyed from the conveyor roller at a predetermined position; when not in use, the positioning plate can be flipped over from the support rod to a free state. The axial position of the positioning plate can be adjusted by the nut on the hinge shaft. During adjustment, the distance between the inner side surface of the positioning plate and the end faces of the upper mold block and the lower mold block is pre-set according to the wall thickness of the steel pipe and the volume of the end hoop.
[0042] The extrusion forming hydraulic cylinder, the upsetting ram, the lower die block, the high frequency induction coil and the steel pipe are concentric.
[0043] The heating part is composed of an ultrasonic induction heating device 21 and a high-frequency induction coil 23, and the ultrasonic induction heating device and the high-frequency induction coil are electrically connected.
[0044] The loading and unloading part is composed of a loading platform 22, a unloading platform 26, a conveying roller 24, and a tube turner 25. The loading platform and the unloading platform are arranged in parallel horizontally, and the conveying roller and the tube turner are both arranged at the connection between the loading platform and the unloading platform.
[0045] How to use the die for upsetting the steel pipe end hoop:
[0046] When a steel pipe end hoop upsetting device is used to make a steel pipe end hoop at the end of a steel pipe, first a mold (i.e., the utility model) matching the steel pipe is selected for assembly, the upsetting pressure head is concentrically fixed to the end of the extrusion molding hydraulic cylinder top rod, the upper mold block is fixed to the end of the clamping hydraulic cylinder top rod, and the lower mold block and the upper mold block are fixed relatively to the inner bottom surface of the clamping cylinder seat; the distance between the positioning plate and the end faces of the upper mold block and the lower mold block is set according to the wall thickness of the steel pipe and the volume of the end hoop, and the positioning plate is flipped onto the support rod.
[0047] The specific production process is as follows: the steel pipe is pre-stored on the loading platform, and the tube turner is started. The tube turner turns the steel pipe on the loading platform onto the conveyor roller; the steel pipe is manually pushed into the high-frequency induction coil along the conveyor roller, and the ultrasonic induction heating equipment is started to heat the end of the steel pipe. When the temperature of the end of the steel pipe reaches about 800 degrees, the steel pipe is quickly pushed to the predetermined position in the mold, that is, the end face of the steel pipe is in contact with the inner side of the positioning plate. Start the clamping hydraulic cylinder, which pushes the upper mold block downward until it fits with the lower mold block, and the steel pipe is clamped and fixed; flip the positioning plate to leave the support rod and be in a free hanging state; start the extrusion forming hydraulic cylinder, which pushes the upsetting pressure head to move toward the upper mold block and the lower mold block, and the guide shaft first enters the steel pipe, and then the liner shaft enters the steel pipe, and then the pressure plate compresses the end of the steel pipe. Since the end of the steel pipe has become flexible, the end of the steel pipe is squeezed by the pressure plate into the end hoop forming groove of the upper and lower mold blocks. When the extrusion forming hydraulic cylinder is pushed to the predetermined position, the end hoop of the steel pipe is completed. Immediately start the extrusion forming hydraulic cylinder to retract and drive the upsetting pressure head to retract, start the clamping hydraulic cylinder to rise, push the steel pipe with the end hoop back to its original position, start the pipe turner, and turn the steel pipe to the unloading stand for temporary storage. Repeat in sequence.
[0048] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.
Claims
1. A die for upsetting a steel pipe end hoop, characterized in that: The invention is composed of an upper die block (2), a lower die block (3) and an upsetting press head (1). The upsetting press head (1) is arranged on an extrusion assembly (13) of a steel pipe end hoop upsetting device. The upper die block (2) and the lower die block (3) are respectively arranged on the upper and lower parts of a clamping assembly (14) of the steel pipe end hoop upsetting device. The upper die block (2) and the lower die block (3) are both rectangular components, and are provided with end hoop forming grooves (6) and semicircular grooves (7). The upsetting press head (1) is composed of a pressing plate (10), a liner shaft (11) and a guide shaft (12). The pressing plate (10), the liner shaft (11) and the guide shaft (12) are connected in sequence to form a whole.
2. The steel pipe end hoop upsetting die according to claim 1, characterized in that: The inner shape of the end hoop forming groove (6) is similar to the outer shape of the steel pipe end hoop.
3. The steel pipe end hoop upsetting die according to claim 1, characterized in that: The radius of the semicircular groove (7) is the same as the outer radius of the steel pipe.