Pipeline joint flange high and low pressure combined tooling structure

Abstract

The utility model discloses a high-low pressure combined tooling structure for a pipe joint flange, which belongs to the technical field of combined tooling. The high-low pressure combined tooling structure for a pipe joint flange includes a base plate; a pressure reducing valve is fixedly installed on the left side of the bottom of the base plate, and a low-pressure oil cylinder is fixedly installed on the right side of the bottom of the base plate; a first fixture plate is fixedly installed on the left side of the top of the base plate, and a second fixture plate is fixedly installed on the right side of the top of the base plate; two high-pressure oil cylinders are fixedly installed on the top of the first fixture plate; a plurality of first high-pressure fixtures are evenly installed on the left side of the top of the first fixture plate, and a plurality of second high-pressure fixtures are evenly installed on the right side of the top of the first fixture plate; a plurality of groups of low-pressure clamping mechanisms are evenly installed on the upper side of the second fixture plate, and the low-pressure clamping mechanisms are located on the upper side of the low-pressure oil cylinder. Through the above-mentioned method, the production of high-pressure and low-pressure units and processes is avoided, and the first high-pressure fixture, the second high-pressure fixture and the low-pressure clamping mechanism can effectively clamp the workpiece in the rough machining and fine machining processes of the workpiece respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of combined tooling, in particular to a high- and low-pressure combined tooling structure for a pipeline joint flange. Background Art

[0002] When a workpiece is being processed, a clamp is usually used to quickly clamp the workpiece to ensure processing accuracy. In actual production, hydraulic clamps have the advantages of fast speed, high reliability, and no leakage, and are often used to clamp workpieces.

[0003] For example, Chinese patent CN218427069U discloses a CNC hydraulic clamp, which has a movable cavity on a frame plate, a clamping structure installed in the movable cavity, and an oil cylinder drives a wedge block to move up and down to drive a clamping block to clamp a workpiece.

[0004] However, in actual production, for some workpieces that require multi-processing, if the strength of the workpiece changes after the initial processing, or some clamping positions are not suitable for high-pressure clamps, low-pressure clamps are needed to clamp the workpiece; and if high-pressure and low-pressure separate machines are used for production in different processes, the processing processes will be dispersed, increasing the risk of defective products flowing out due to process transfer.

[0005] Based on this, the utility model designs a pipeline joint flange high-low pressure combined tooling structure to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a high-low pressure combined tooling structure of a pipeline joint flange.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The pipeline joint flange high-low pressure combined tooling structure includes a base plate fixedly mounted on the upper side of the machine tool through a spacer block;

[0009] A pressure reducing valve is fixedly installed on the left side of the bottom of the bottom plate, and a low-pressure oil cylinder is fixedly installed on the right side of the bottom of the bottom plate; a first fixture plate is fixedly installed on the left side of the top of the bottom plate, and a second fixture plate is fixedly installed on the right side of the top of the bottom plate;

[0010] Two high-pressure oil cylinders are fixedly installed on the top of the first fixture plate; multiple first high-pressure fixtures are installed at equal intervals on the left side of the top of the first fixture plate, and multiple second high-pressure fixtures are installed at equal intervals on the right side of the top of the first fixture plate; multiple groups of low-pressure clamping mechanisms are installed at equal intervals on the upper side of the second fixture plate, and the low-pressure clamping mechanisms are located on the upper side of the low-pressure oil cylinder;

[0011] The moving part of the low-pressure clamping mechanism is fixedly installed on the output end of the low-pressure cylinder; the moving part of the first high-pressure clamp is fixedly installed on the output end of the left high-pressure cylinder, and the moving part of the second high-pressure clamp is fixedly installed on the output end of the right high-pressure cylinder; the oil inlet and oil outlet of the pressure reducing valve are connected to the oil outlet hole of the high-pressure cylinder and the oil inlet hole of the low-pressure cylinder through a hose respectively.

[0012] Furthermore, a plurality of first high-pressure clamps are symmetrically arranged on both sides of the left high-pressure oil cylinder; a plurality of second high-pressure clamps are symmetrically arranged on both sides of the right high-pressure oil cylinder.

[0013] Furthermore, the first high-pressure clamp includes a limit assembly and a moving assembly, the limit assembly is installed on the first clamp plate, and the moving assembly is installed on the output end of the high-pressure oil cylinder.

[0014] Furthermore, the movable component includes a conformal block and a pressure groove. The conformal block is fixedly installed on the output end of the high-pressure cylinder. The side of the conformal block away from the high-pressure cylinder is set to a contour that conforms to the side of the base. The front and rear sides of the top of the conformal block are symmetrically provided with pressure grooves.

[0015] Furthermore, the limiting assembly includes a single-sided groove and a pressure block. A plurality of gourd-shaped single-sided grooves for accommodating the base and the joint are evenly spaced on the left side of the top of the first fixture plate, and a accommodating groove is formed between the single-sided groove and the conformal block; pressure blocks are fixedly installed on the front and rear sides of the top of the single-sided groove; the pressure block is slidably connected to the pressure groove.

[0016] Furthermore, the second high-pressure clamp includes a bottom groove, a conformal platform, a first positioning pin and a side pressure block. A plurality of gourd-shaped bottom grooves for accommodating the bottom platform are opened on the right side of the top of the first clamp plate. A gourd-shaped conformal platform for supporting the bottom platform is fixedly installed at the bottom of the bottom groove, and the size of the conformal platform is consistent with the size of the bottom platform; a first positioning pin connected to the through hole is fixedly installed in the middle of the large end of the gourd-shaped conformal platform; a side pressure block is fixedly installed at the output end of the low-pressure oil cylinder, and the side of the side pressure block close to the bottom groove is set to a contour that conforms to the side of the bottom platform.

[0017] Furthermore, the second high-voltage clamp further comprises a notch, and a notch is provided on a side of the top of the side pressure block close to the bottom groove, and an inner bottom of the notch and a top of the conformal platform are located at the same horizontal plane.

[0018] Furthermore, the low-pressure clamping mechanism includes a mounting platform, a pull-down tensioning sleeve and a second positioning pin. A plurality of mounting platforms are evenly and evenly fixedly installed on the second clamp plate at equal intervals. A pull-down tensioning sleeve for plugging into the through hole is fixedly installed at the output end of the low-pressure oil cylinder. The pull-down tensioning sleeve is located in the middle of the mounting platform. A second positioning pin is fixedly installed on the mounting platform, and the second positioning pin is plugged into the positioning hole.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] Through the tooling structure composed of the first high-pressure clamp, the second high-pressure clamp and the low-pressure clamping mechanism, the problem of high-pressure and low-pressure separate machines and separate processes for production is effectively solved, and the flow between different processes is reduced, realizing the process mode of batch production of one equipment, making the processing process more centralized, and reducing the risk of defective products flowing out due to process flow; the first high-pressure clamp performs high-pressure positioning and pressing on the base and the joint, the second high-pressure clamp performs high-pressure positioning and pressing on the base and the joint, and the low-pressure clamping mechanism and the positioning hole position and clamp the base and the joint, thereby preventing the boss and the bottom plane from being deformed by the compression force caused by the thin wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 The utility model is a three-dimensional high-low pressure combined tooling structure of the pipeline joint flange Figure 1 ;

[0023] Figure 2 It is a front view of the high-low pressure combined tooling structure of the pipeline joint flange of the utility model;

[0024] Figure 3 The utility model is a three-dimensional high-low pressure combined tooling structure of the pipeline joint flange Figure 2 ;

[0025] Figure 4 It is a schematic diagram of the workpiece structure;

[0026] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 6 for Figure 3 Enlarged view of point B in the middle;

[0028] Figure 7 for Figure 1 Enlarged view of point C in the middle.

[0029] The numbers in the figure represent:

[0030] 1. Bottom plate; 11. First fixture plate; 12. Second fixture plate; 2. Pressure reducing valve; 3. High-pressure clamping mechanism; 31. First high-pressure fixture; 311. Single-sided groove; 313. Conformal block; 314. Pressure groove; 315. Pressure block; 32. Second high-pressure fixture; 321. Bottom groove; 322. Conformal table; 323. First positioning pin; 324. Side pressure block; 325. Notch; 4. Low-pressure clamping mechanism; 41. Mounting table; 42. Pull-down tension sleeve; 43. Second positioning pin; 5. High-pressure oil cylinder; 6. Low-pressure oil cylinder; 8. Workpiece; 81. Bottom table; 82. Joint; 83. Positioning hole; 84. Through hole. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0033] Embodiment 1

[0034] In some embodiments, please refer to the attached instructions. Figure 1-4 , a high-low pressure combined tooling structure of a pipe joint flange, including a base plate 1 fixedly mounted on the upper side of the machine tool through a spacer block;

[0035] A pressure reducing valve 2 is fixedly installed on the left side of the bottom of the bottom plate 1, and a low-pressure oil cylinder 6 is fixedly installed on the right side of the bottom of the bottom plate 1; a first fixture plate 11 is fixedly installed on the left side of the top of the bottom plate 1, and a second fixture plate 12 is fixedly installed on the right side of the top of the bottom plate 1;

[0036] Two high-pressure oil cylinders 5 are fixedly installed on the top of the first fixture plate 11; a plurality of first high-pressure fixtures 31 are evenly installed on the left side of the top of the first fixture plate 11, and a plurality of second high-pressure fixtures 32 are evenly installed on the right side of the top of the first fixture plate 11; a plurality of low-pressure clamping mechanisms 4 are evenly installed on the upper side of the second fixture plate 12, and the low-pressure clamping mechanisms 4 are located on the upper side of the low-pressure oil cylinder 6;

[0037] The moving part of the low-pressure clamping mechanism 4 is fixedly installed on the output end of the low-pressure cylinder 6; the moving part of the first high-pressure clamp 31 is fixedly installed on the output end of the left high-pressure cylinder 5, and the moving part of the second high-pressure clamp 32 is fixedly installed on the output end of the right high-pressure cylinder 5; the oil inlet and oil outlet of the pressure reducing valve 2 are connected to the oil outlet hole of the high-pressure cylinder 5 and the oil inlet hole of the low-pressure cylinder 6 through a hose respectively.

[0038] A plurality of first high-pressure clamps 31 are symmetrically arranged on both sides of the left high-pressure oil cylinder 5 ; a plurality of second high-pressure clamps 32 are symmetrically arranged on both sides of the right high-pressure oil cylinder 5 .

[0039] The workpiece 8 includes a base 81, a joint 82, a positioning hole 83 and a through hole 84. The base 81 is arranged in a gourd shape. The joint 82 is fixedly installed on the upper middle side of the large end of the gourd-shaped base 81. A through hole 84 is opened in the middle of the joint 82.

[0040] In this embodiment, when the high-low pressure combined tooling structure of the pipeline joint flange is working normally, the hydraulic pressure base plate of the high-pressure hydraulic station is 1-20Mpa, and a special high-pressure oil cylinder 5 is configured, and the hydraulic pressure base plate of the low-pressure hydraulic station is 1-low-pressure oil cylinder 6Mpa, and a low-pressure oil cylinder 6 is configured; the high-pressure oil coming through the high-pressure oil cylinder 5 is debugged by the pressure reducing valve 2 through the pressure reducing valve 2, and is reduced from high pressure 20Mpa to low pressure below 6Mpa of the low-pressure oil cylinder, and enters the low-pressure oil cylinder 6 after reaching the working condition of the low-pressure oil cylinder 6, so as to avoid the high-pressure oil output by the high-pressure hydraulic station from entering the low-pressure oil cylinder 6 and damaging the low-pressure oil cylinder 6; the joint 82 is installed upwardly in the first high-pressure fixture 31 with the lower base 81 downward, and the base 81 and the joint 82 are positioned and pressed by the first high-pressure fixture 31, and then the workpiece 8 is drilled and milled. In this process, a setting is made at the small end of the gourd-shaped base 81 Positioning hole 83; the base 81 on the joint 82 is installed downward in the second high-pressure clamp 32, and the base 81 and the joint 82 are positioned and pressed by the second high-pressure clamp 32, and the boss roughing and bottom plane roughing are performed on the workpiece 8; the base 81 on the joint 82 is installed downward on the low-pressure clamping mechanism 4, and the base 81 and the joint 82 are positioned and clamped by the low-pressure clamping mechanism 4 and the positioning hole 83, so as to fine-machine the boss and the bottom plane to prevent the boss from being deformed by the compression force caused by the thin wall; the tooling structure composed of the first high-pressure clamp 31, the second high-pressure clamp 32 and the low-pressure clamping mechanism 4 effectively solves the problem of high-voltage and low-voltage separate machine production processes, and also reduces the flow between different processes, realizing the process mode of batch production of one equipment, making the processing process more concentrated, and reducing the risk of defective products flowing out due to process flow.

[0041] Embodiment 2

[0042] In some embodiments, Figure 1-7As shown, as a preferred embodiment of the utility model, the first high-pressure clamp 31 includes a limit assembly and a moving assembly, the limit assembly is installed on the first clamp plate 11, and the moving assembly is installed on the output end of the high-pressure oil cylinder 5;

[0043] The moving assembly includes a conforming block 313 and a pressing groove 314. The conforming block 313 is fixedly mounted on the output end of the high-pressure oil cylinder 5. The side of the conforming block 313 away from the high-pressure oil cylinder 5 is set to a contour conforming to the side of the base 81. The front and rear sides of the top of the conforming block 313 are symmetrically provided with pressing grooves 314.

[0044] The limiting assembly includes a single-sided groove 311 and a pressing block 315. A plurality of gourd-shaped single-sided grooves 311 for accommodating the base 81 and the joint 82 are evenly and evenly provided at equal intervals on the left side of the top of the first fixture plate 11. A receiving groove is formed between the single-sided groove 311 and the conforming block 313. Pressing blocks 315 are fixedly installed on both sides of the top of the single-sided groove 311. The pressing block 315 is slidably connected with the pressing groove 314.

[0045] The second high-pressure clamp 32 includes a bottom groove 321, a conformal platform 322, a first positioning pin 323 and a side pressure block 324. A plurality of gourd-shaped bottom grooves 321 for accommodating the base 81 are opened on the right side of the top of the first clamp plate 11. A gourd-shaped conformal platform 322 for supporting the base 81 is fixedly installed at the bottom of the bottom groove 321, and the size of the conformal platform 322 is consistent with the size of the base 81; a first positioning pin 323 plugged into the through hole 84 is fixedly installed in the middle of the large end of the gourd-shaped conformal platform 322; a side pressure block 324 is fixedly installed at the output end of the low-pressure oil cylinder 6, and a side of the side pressure block 324 close to the bottom groove 321 is set to a contour conformable to the side of the base 81.

[0046] The second high-voltage clamp 32 further includes a notch 325 . A notch 325 is formed on one side of the top of the side pressure block 324 close to the bottom groove 321 . The inner bottom of the notch 325 and the top of the conformal platform 322 are located at the same level.

[0047] The low-pressure clamping mechanism 4 includes a mounting platform 41, a pull-down tensioning sleeve 42 and a second positioning pin 43. A plurality of mounting platforms 41 are evenly and evenly fixedly installed on the second fixture plate 12. A pull-down tensioning sleeve 42 for plugging with the through hole 84 is fixedly installed at the output end of the low-pressure cylinder 6. The pull-down tensioning sleeve 42 is located in the middle of the mounting platform 41. A second positioning pin 43 is fixedly installed on the mounting platform 41, and the second positioning pin 43 is plugged with the positioning hole 83.

[0048] In this embodiment, when the high-pressure clamping mechanism 3 and the low-pressure clamping mechanism 4 are working normally, the joint 82 is moved downward to the base 81 upward to place the base 81 and the joint 82 into the single-sided groove 311, and the base 81 and the joint 82 are positioned in shape through the gourd-shaped single-sided groove 311, and the high-pressure oil cylinder 5 pushes the conformal block 313 to move, thereby pressing the base 81 and the joint 82 into the single-sided groove 311 through the conformal block 313; the conformal block 313 is made more stable through the limiting of the pressing groove 314 and the pressing block 315; after drilling and milling the surface, the base 81 is moved downward to the joint 82 upward, and the through hole 84 is aligned with the first positioning pin 323 and inserted, thereby placing the base 81 on the conformal table 322 in the bottom groove 321, and positioning the base 81 through the first positioning pin 323, the through hole 84 and the bottom groove 321. The high-pressure oil cylinder 5 drives the side pressure block 324 to move so that the lower side of the side pressure block 324 presses the conformal platform 322, and the upper side of the side pressure block 324 presses the bottom platform 81, so that the lower end of the side pressure block 324 is supported by the conformal platform 322, so that the side pressure block 324 presses the workpiece while avoiding deformation of the workpiece after drilling and milling, and then the boss is roughed and the bottom plane is roughed; the second positioning pin 43 on the mounting platform 41 is inserted into the positioning hole 83, and the pull-down tensioning sleeve 42 at the output end of the low-pressure oil cylinder 6 is inserted into the through hole 84, and the bottom platform 81 is placed downward on the mounting platform 41 with the joint 82 upward, thereby completing the positioning of the bottom platform 81 and the joint 82; the low-pressure oil cylinder 6 drives the pull-down tensioning sleeve 42 to press and tighten the workpiece 8 to fix it, thereby fine-machining the boss and the bottom plane to prevent the boss from being deformed by the compression force caused by the thin wall.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-low pressure combined tooling structure for a pipe joint flange, comprising a base plate (1) fixedly mounted on the upper side of a machine tool through a spacer block, characterized in that: A pressure reducing valve (2) is fixedly installed on the left side of the bottom of the base plate (1), and a low-pressure oil cylinder (6) is fixedly installed on the right side of the bottom of the base plate (1); a first fixture plate (11) is fixedly installed on the left side of the top of the base plate (1), and a second fixture plate (12) is fixedly installed on the right side of the top of the base plate (1); Two high-pressure oil cylinders (5) are fixedly installed on the top of the first clamp plate (11); a plurality of first high-pressure clamps (31) are installed at equal intervals on the left side of the top of the first clamp plate (11), and a plurality of second high-pressure clamps (32) are installed at equal intervals on the right side of the top of the first clamp plate (11); a plurality of groups of low-pressure clamping mechanisms (4) are installed at equal intervals on the upper side of the second clamp plate (12), and the low-pressure clamping mechanisms (4) are located on the upper side of the low-pressure oil cylinder (6); The moving part of the low-pressure clamping mechanism (4) is fixedly mounted on the output end of the low-pressure oil cylinder (6); the moving part of the first high-pressure clamp (31) is fixedly mounted on the output end of the left high-pressure oil cylinder (5), and the moving part of the second high-pressure clamp (32) is fixedly mounted on the output end of the right high-pressure oil cylinder (5); the oil inlet and oil outlet of the pressure reducing valve (2) are respectively connected to the oil outlet of the high-pressure oil cylinder (5) and the oil inlet of the low-pressure oil cylinder (6) through a hose.

2. The pipeline joint flange high-low pressure combined tooling structure according to claim 1 is characterized in that: A plurality of first high-pressure clamps (31) are symmetrically arranged on both sides of the left high-pressure oil cylinder (5); and a plurality of second high-pressure clamps (32) are symmetrically arranged on both sides of the right high-pressure oil cylinder (5).

3. The pipeline joint flange high and low pressure combined tooling structure according to claim 2 is characterized in that: The first high-pressure clamp (31) comprises a limit assembly and a moving assembly, wherein the limit assembly is mounted on the first clamp plate (11) and the moving assembly is mounted on the output end of the high-pressure oil cylinder (5).

4. The pipeline joint flange high-low pressure combined tooling structure according to claim 3 is characterized in that: The moving assembly comprises a conforming block (313) and a pressing groove (314); the conforming block (313) is fixedly mounted on the output end of the high-pressure oil cylinder (5); a side of the conforming block (313) away from the high-pressure oil cylinder (5) is arranged to have a contour conforming to the side edge of the base (81); and the pressing grooves (314) are symmetrically provided on the front and rear sides of the top of the conforming block (313).

5. The pipeline joint flange high-low pressure combined tooling structure according to claim 4 is characterized in that: The limiting assembly comprises a single-sided groove (311) and a pressing block (315); a plurality of gourd-shaped single-sided grooves (311) for accommodating a base (81) and a joint (82) are evenly and evenly provided at equal intervals on the left side of the top of the first fixture plate (11); a receiving groove is formed between the single-sided groove (311) and the conformal block (313); pressing blocks (315) are fixedly installed on the front and rear sides of the top of the single-sided groove (311); and the pressing block (315) is slidably connected to the pressing groove (314) in a fitting manner.

6. The pipeline joint flange high-low pressure combined tooling structure according to claim 5 is characterized in that: The second high-pressure clamp (32) comprises a bottom groove (321), a conformal platform (322), a first positioning pin (323) and a side pressure block (324); a plurality of gourd-shaped bottom grooves (321) for accommodating the bottom platform (81) are opened on the right side of the top of the first clamp plate (11); a gourd-shaped conformal platform (322) for supporting the bottom platform (81) is fixedly installed at the bottom of the bottom groove (321); the size of the conformal platform (322) is consistent with the size of the bottom platform (81); a first positioning pin (323) plugged into the through hole (84) is fixedly installed in the middle of the large end of the gourd-shaped conformal platform (322); a side pressure block (324) is fixedly installed at the output end of the low-pressure oil cylinder (6); a side of the side pressure block (324) close to the bottom groove (321) is set to have a contour conformable to the side of the bottom platform (81).

7. The pipeline joint flange high-low pressure combined tooling structure according to claim 6 is characterized in that: The second high-pressure clamp (32) further comprises a notch (325), and a notch (325) is provided on a side of the top of the side pressure block (324) close to the bottom groove (321), and the inner bottom of the notch (325) and the top of the conformal platform (322) are located on the same horizontal plane.

8. The pipeline joint flange high-low pressure combined tooling structure according to claim 7 is characterized in that: The low-pressure clamping mechanism (4) comprises a mounting platform (41), a pull-down tension sleeve (42) and a second positioning pin (43); a plurality of mounting platforms (41) are fixedly mounted at equal intervals on the second fixture plate (12); a pull-down tension sleeve (42) for plugging into the through hole (84) is fixedly mounted on the output end of the low-pressure oil cylinder (6); the pull-down tension sleeve (42) is located in the middle of the mounting platform (41); a second positioning pin (43) is fixedly mounted on the mounting platform (41), and the second positioning pin (43) is plugged into the positioning hole (83).

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