Pipe end reducing and rounding die
By introducing an oil coating mechanism and lubricating oil control system into the pipe end shrinkage round mold, the serious wear of the mold core is solved, and a stable and efficient pipe end shrinkage round effect is achieved, avoiding the waste of lubricating oil.
Patent Information
- Application Number
- CN202421942261.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-12
AI Technical Summary
When used in the existing shrink-diameter round mold, the friction between the inner wall of the mold core and the outer wall of the pipe causes serious wear, affecting the shrink-diameter round effect of the end of the pipe.
A pipe end shrinkage round mold is designed, equipped with an oil coating mechanism, which applies lubricating oil to the outer wall of the pipe during the downward movement through a sponge to reduce friction, and controls the use of lubricating oil through a humidity sensor and solenoid valve to prevent waste.
It effectively reduces the wear of the inner wall of the mold core, ensures the effect of shrinking the diameter of the pipe end and avoids waste caused by excessive lubricating oil leakage.
Smart Images
Figure CN223114004U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipe end necking and rounding, in particular to a pipe end necking and rounding die. Background Technique
[0002] The pipe end necking and rounding die is a tool for pipe end necking and rounding. The pipe end necking and rounding die usually consists of a die seat, a die core, an adjustment mechanism and a feeding mechanism. When in use, the pipe is placed in the die seat, and the die core compresses and rounds the pipe radially through the adjustment mechanism and the feeding mechanism, so as to achieve the purpose of necking and rounding. The pipe end necking and rounding die is widely used in the pipeline systems of industries such as petroleum, chemical industry, electric cutting, and metallurgy, and is used to connect pipes with different diameters or repair pipe deformation and damage.
[0003] At present, when the existing necking and rounding die is in use, it usually directly uses the die core to extrude, compress, and round the end of the pipe. However, in actual operation, since there is friction between the inner wall of the die core and the outer wall of the pipe when the die core necking and rounds the pipe, if the die core is used for a long time, the inner wall of the die core will be severely worn, resulting in the necking and rounding of the pipe not meeting the requirements. Content of the Utility Model
[0004] The purpose of the utility model is to provide a pipe end necking and rounding die to solve the problems put forward in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] A pipe end necking and rounding die, including an operation table, four corners of the top surface of the operation table are fixedly connected with support columns, a fixed plate is fixedly connected between the tops of the four support columns, a hydraulic cylinder is fixedly penetrated through the top surface of the fixed plate, the output end of the hydraulic cylinder is fixedly connected with a moving plate, the bottom surface of the moving plate is fixedly connected with a die core, a fixing mechanism is arranged on the top surface of the operation table, an oiling mechanism is arranged above the fixing mechanism, the oiling mechanism includes an annular shell, a plurality of oil outlet holes are opened on the inner wall of the annular shell, a sponge is fixedly connected to the inner wall of the annular shell, a hard pipe communicated with the inside of the annular shell is fixedly connected to the outer wall of the annular shell, an oil storage tank is fixedly connected to the top surface of the fixed plate, and a hose fixedly connected to the inside of the hard pipe is fixedly penetrated through the inner bottom surface of the oil storage tank.
[0007] Furthermore: Four limiting rods one distributed in a rectangle are fixedly connected between the operation table and the fixed plate, the moving plate slides through the outer walls of the four limiting rods one, a connecting plate slides through the outer walls of the two limiting rods one at the relative positions, a connecting block is fixedly connected between the connecting plate and the annular shell, and springs fixedly connected to the top surface of the operation table are fixedly connected to both ends of the bottom surface of the connecting plate.
[0008] Furthermore, one side of the fixed plate is fixedly connected with a controller. A humidity sensor inserted into the sponge and electrically connected to the controller through a first wire is fixed on the inner wall of the annular shell. An electromagnetic valve communicated with the inside of the hose and electrically connected to the controller through a second wire is fixedly connected to the outer wall of the hose.
[0009] Furthermore, a baffle is fixedly connected to one side of the top surface of the operating table. The fixing mechanism includes two mold seats. The opposite sides of the two mold seats are both semi-circular surface structures. One of the mold seats far away from the baffle is fixed to the top surface of the operating table. Two symmetric second limiting rods are fixedly connected between one side of the mold seat fixed to the top surface of the operating table and the baffle. The other mold seat is slidably penetrated between the outer walls of the two second limiting rods. Two symmetric electric push rods fixedly connected to the corresponding positions of the mold seats are fixedly connected to one side of the baffle.
[0010] Furthermore, grooves into which the annular shell is inserted are formed in the adjacent sides of the top surfaces of the two mold seats. Notches one into which the connecting blocks at the corresponding positions are inserted are formed on both sides of the adjacent ends of the top surfaces of the two mold seats. A notch two into which the rigid pipe is inserted is formed at one end of the top surface of the mold seat fixed to the operating table.
[0011] Furthermore, a limiting ring is fixedly connected to the bottom end of the mold core. The outer diameter of the limiting ring is larger than the outer diameter of the annular shell. The outer diameter of the annular shell is the same as the outer diameter of the groove.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] 1. During the downward movement of the sponge, the sponge contacts the outer wall of the pipe, so that the lubricating oil can be applied to the outer wall of the pipe. Therefore, the friction between the mold core and the pipe can be reduced, and the inner wall of the mold core can be prevented from being severely worn, resulting in the reduction of the diameter reduction and roundness of the pipe end not meeting the requirements.
[0014] 2. The controller can set a humidity range for the humidity sensor, which can avoid excessive leakage of the lubricating oil in the sponge, resulting in serious waste of the lubricating oil. Since the outer diameter of the annular shell is the same as the outer diameter of the groove, it is convenient for the annular shell to be inserted between the two grooves, and the mold core can be prevented from crushing the annular shell. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0016] Figure 2 is a schematic diagram of the operating table in the present utility model;
[0017] Figure 3It is a schematic diagram of the hydraulic cylinder in the present utility model;
[0018] Figure 4 It is a schematic diagram of the structure of the fixing mechanism in the present utility model;
[0019] Figure 5 It is a schematic diagram of the structure of the oiling mechanism in the present utility model.
[0020] In the figure: 1. Operating table; 11. Support column; 12. Fixed plate; 13. First limiting rod; 14. Baffle; 15. Controller; 2. Hydraulic cylinder; 21. Moving plate; 22. Mold core; 23. Limiting ring; 3. Fixing mechanism; 31. Mold base; 32. Second limiting rod; 33. Electric push rod; 34. Groove; 35. First notch; 36. Second notch; 4. Oiling mechanism; 41. Ring-shaped shell; 42. Sponge; 43. Rigid tube; 44. Hose; 45. Oil storage tank; 46. Solenoid valve; 47. Connecting plate; 48. Spring. Specific embodiments
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0022] Please refer to Figures 1 to 5 , in the embodiment of the present utility model, a pipe end necking and rounding die includes an operating table 1. Support columns 11 are fixedly connected to the four corners of the top surface of the operating table 1. A fixed plate 12 is fixedly connected between the tops of the four support columns 11. A hydraulic cylinder 2 is fixedly penetrated through the top surface of the fixed plate 12. The output end of the hydraulic cylinder 2 is fixedly connected to a moving plate 21. The bottom surface of the moving plate 21 is fixedly connected to a mold core 22. A fixing mechanism 3 is arranged on the top surface of the operating table 1. An oiling mechanism 4 is arranged above the fixing mechanism 3. The oiling mechanism 4 includes a ring-shaped shell 41. A plurality of oil outlet holes are opened on the inner wall of the ring-shaped shell 41. A sponge 42 is fixedly connected to the inner wall of the ring-shaped shell 41. A rigid tube 43 communicating with the inside of the ring-shaped shell 41 is fixedly connected to the outer wall of the ring-shaped shell 41. A storage tank 45 is fixedly connected to the top surface of the fixed plate 12. A hose 44 fixedly connected to the inside of the rigid tube 43 is fixedly penetrated through the inner bottom surface of the storage tank 45.
[0023] Specifically, when in use, first pour a certain amount of lubricating oil into the oil storage tank 45. The lubricating oil will flow along the hose 44 and the hard pipe 43 into the annular shell 41, and flow into the sponge 42 through multiple oil outlet holes. Then, fix the pipe that needs to be reduced in diameter and circularized in the fixing mechanism 3. Then, start the hydraulic cylinder 2 to move the die core 22 downward. When the downward-moving die core 22 contacts the annular shell 41, the annular shell 41 and the sponge 42 move downward under the action of the die core 22 until the annular shell 41 moves into the fixing mechanism 3. At this time, the die core 22 is sleeved on the outer wall of the pipe, so as to realize the reduction in diameter and circularization of the end of the pipe. Since the sponge 42 will contact the outer wall of the pipe during the downward movement, the lubricating oil can be applied to the outer wall of the pipe, so that the friction between the die core 22 and the pipe can be reduced, and thus the inner wall of the die core 22 can be prevented from being severely worn, resulting in the reduction in diameter and circularization of the end of the pipe not meeting the requirements.
[0024] Embodiment 1
[0025] As Figure 1 and Figure 5 shown, in this embodiment, four limit rods 13 distributed in a rectangle are fixedly connected between the operating table 1 and the fixed plate 12. The moving plate 21 slides through the outer walls of the four limit rods 13. A connecting plate 47 slides through the outer walls of two limit rods 13 at relative positions. A connecting block is fixedly connected between the connecting plate 47 and the annular shell 41. Springs 48 fixed to the top surface of the operating table 1 are fixedly connected to both ends of the bottom surface of the connecting plate 47. A controller 15 is fixedly connected to one side surface of the fixed plate 12. A humidity sensor inserted into the sponge 42 and electrically connected to the controller 15 through a first wire is fixed to the inner wall of the annular shell 41. An electromagnetic valve 46 communicating with the inside of the hose 44 and electrically connected to the controller 15 through a second wire is fixedly connected to the outer wall of the hose 44.
[0026] In this embodiment, the four limiting rods I 13 can make the mold core 22 more stable during movement. When the mold core 22 drives the annular shell 41 to move downward, the four springs 48 can be compressed. When the mold core 22 moves upward, the four springs 48 release elasticity and make the annular shell 41 slowly return to its original position through the two connecting plates 47. Since the solenoid valve 46 is fixed on the hose 44, and after the lubricating oil on the sponge 42 is applied multiple times, the lubricating oil will become less and less. First, the staff can set a humidity range for the humidity sensor through the controller 15. If the sensor detects that the humidity in the sponge 42 is insufficient, the humidity sensor transmits the signal to the solenoid valve 46 through the controller 15 to control the solenoid valve 46 to open. At this time, the lubricating oil in the oil storage tank 45 flows along the hose 44 and the hard pipe 43 into the annular shell 41, and then flows into the sponge 42 through the multiple oil outlet holes until the humidity in the sponge 42 reaches the maximum value set by the humidity sensor. At this time, the solenoid valve 46 closes. Therefore, it can prevent the lubricating oil in the oil storage tank 45 from continuously flowing into the sponge 42, thereby avoiding excessive lubricating oil leakage in the sponge 42 and serious waste of lubricating oil.
[0027] Embodiment II
[0028] As Figure 2 and Figure 4 shown, in this embodiment, a baffle 14 is fixedly connected to one side of the top surface of the operating table 1. The fixing mechanism 3 includes two mold seats 31. The opposite side surfaces of the two mold seats 31 are both semi-circular surface structures. One of the mold seats 31 away from the baffle 14 is fixed to the top surface of the operating table 1. Two symmetrical limiting rods II 32 are fixedly connected between one side surface of the mold seat 31 fixed to the top surface of the operating table 1 and the baffle 14. The other mold seat 31 is slidably penetrated between the outer walls of the two limiting rods II 32. Two symmetrical electric push rods 33 are fixedly connected to one side surface of the baffle 14 and are fixed to the corresponding mold seat 31.
[0029] In this embodiment, by starting the two electric push rods 33, the mold seat 31 at the corresponding position can be moved, and the moving mold seat 31 can fix or remove the pipe between the two mold seats 31.
[0030] Embodiment III
[0031] As Figures 3-4 shown, in this embodiment, grooves 34 into which the annular shell 41 is inserted are provided on the adjacent sides of the top surfaces of the two mold seats 31. Notches I 35 into which the corresponding connecting blocks are inserted are provided on both sides of one end adjacent to the top surfaces of the two mold seats 31. A notch II 36 into which the hard pipe 43 is inserted is provided at one end of the top surface of the mold seat 31 fixed to the operating table 1. A limiting ring 23 is fixedly connected to the bottom end of the mold core 22. The outer diameter of the limiting ring 23 is greater than the outer diameter of the annular shell 41, and the outer diameter of the annular shell 41 is the same as the outer diameter of the groove 34.
[0032] In this embodiment, since the outer diameter of the limiting ring 23 is larger than the outer diameter of the annular shell 41, it is convenient for the mold core 22 to drive the annular shell 41 to move downward when moving downward. Since the outer diameter of the annular shell 41 is the same as the outer diameter of the groove 34, it is convenient for the annular shell 41 to be inserted between the two grooves 34, which can prevent the mold core 22 from crushing the annular shell 41.
[0033] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights.
[0034] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A tube end necking and rounding die, characterized in that It includes an operating table (1). At the four corners of the top surface of the operating table (1), support columns (11) are fixedly connected. Between the tops of the four support columns (11), a fixing plate (12) is fixedly connected. A hydraulic cylinder (2) is fixedly penetrated through the top surface of the fixing plate (12). The output end of the hydraulic cylinder (2) is fixedly connected with a moving plate (21). The bottom surface of the moving plate (21) is fixedly connected with a mold core (22). A fixing mechanism (3) is arranged on the top surface of the operating table (1). Above the fixing mechanism (3), an oiling mechanism (4) is arranged. The oiling mechanism (4) includes an annular shell (41). A number of oil outlet holes are opened on the inner wall of the annular shell (41). A sponge (42) is fixedly connected to the inner wall of the annular shell (41). A rigid tube (43) communicated with the inside of the annular shell (41) is fixedly connected to the outer wall of the annular shell (41). A fuel tank (45) is fixedly connected to the top surface of the fixing plate (12). A flexible tube (44) fixedly connected to the inside of the rigid tube (43) is fixedly penetrated through the inner bottom surface of the fuel tank (45).
2. The tube end necking and rounding die according to claim 1, characterized in that, Four limiting rods one (13) distributed in a rectangle are fixedly connected between the operating table (1) and the fixing plate (12). The moving plate (21) is slidably penetrated through the outer walls of the four limiting rods one (13). A connecting plate (47) is slidably penetrated through the outer walls of two relatively positioned limiting rods one (13). A connecting block is fixedly connected between the connecting plate (47) and the annular shell (41). Springs (48) fixedly connected to the top surface of the operating table (1) are fixedly connected to both ends of the bottom surface of the connecting plate (47).
3. A tube end necking and rounding die according to claim 2, characterized in that, A controller (15) is fixedly connected to one side surface of the fixing plate (12). A humidity sensor inserted into the sponge (42) and electrically connected to the controller (15) through a first wire is fixed to the inner wall of the annular shell (41). An electromagnetic valve (46) communicated with the inside of the flexible tube (44) and electrically connected to the controller (15) through a second wire is fixedly connected to the outer wall of the flexible tube (44).
4. A tube end necking and rounding die according to claim 3, characterized in that, A baffle (14) is fixedly connected to one side of the top surface of the operating table (1). The fixing mechanism (3) includes two mold bases (31). The opposite side surfaces of the two mold bases (31) are both semi-circular surface structures. One of the mold bases (31) away from the baffle (14) is fixedly connected to the top surface of the operating table (1). Two symmetric limiting rods two (32) are fixedly connected between one side surface of the mold base (31) fixedly connected to the top surface of the operating table (1) and the baffle (14). The other mold base (31) is slidably penetrated through the outer walls of the two limiting rods two (32). Two symmetric electric push rods (33) fixedly connected to the corresponding mold bases (31) are fixedly connected to one side surface of the baffle (14).
5. A tube end necking and rounding die according to claim 4, characterized in that Grooves (34) inserted with the annular shell (41) are opened on the adjacent sides of the top surfaces of the two mold bases (31). Notches one (35) inserted with the corresponding connecting blocks are opened on both sides of the adjacent ends of the top surfaces of the two mold bases (31). A notch two (36) inserted with the rigid tube (43) is opened at one end of the top surface of the mold base (31) fixedly connected to the operating table (1).
6. A tube end necking and rounding die according to claim 5, characterized in that, The bottom end of the mold core (22) is fixedly connected with a limit ring (23). The outer diameter of the limit ring (23) is larger than the outer diameter of the annular shell (41), and the outer diameter of the annular shell (41) is the same as the outer diameter of the groove (34).