A positioning and opening mechanism for a pressure vessel head

Abstract

The present application relates to pressure vessel head processing equipment technical field, especially to a kind of pressure vessel head positioning trepanning mechanism, including boring machine, and the boring cutter being set on the boring machine, the end portion of the boring cutter is embedded with numerical control blade, the inside of the rotating groove is provided with positioning clamping assembly, the upper portion of the rotating disc is provided with driving assembly, the outside of the rotating disc is provided with connection fixed component;The present application, under the mutual cooperation of positioning clamping assembly, driving assembly and connection fixed component, can be positioned clamping according to different specifications of head, rotating and selecting suitable clamping block, further improve the replacement efficiency of clamping block, further guarantee boring efficiency of boring machine, further improve the scope of application of boring machine, simultaneously, can select the most suitable clamping block according to head surface, avoid the problem of unstable positioning or surface damage caused by clamping surface mismatch, realize a set of mechanism to adapt to a variety of specifications head positioning clamping mechanism.

Description

Technical Field

[0001] This invention relates to the field of pressure vessel head processing equipment, and in particular to a pressure vessel head positioning and opening mechanism. Background Technology

[0002] A pressure vessel is a sealed container that can withstand internal or external pressure and is widely used in petrochemical, energy, nuclear power, pharmaceutical, aerospace and military industries.

[0003] Heads are an important component of pressure vessels. During the manufacturing process of pressure vessels, heads need to be drilled with various hole systems according to design requirements. Currently, head drilling is mostly carried out by boring machines driving CNC inserts on boring tools.

[0004] Before machining the end caps on a boring machine, the end caps need to be positioned and clamped. Existing clamping mechanisms mostly use fixed clamping heads for positioning and clamping. However, end caps come in a variety of specifications, and fixed clamping heads cannot meet the positioning and clamping effect of diverse end caps. When dealing with end caps of various specifications and in small batches, it is necessary to frequently change the clamping heads, which is time-consuming and labor-intensive, affects boring efficiency, and further reduces machining efficiency.

[0005] Therefore, we provide a pressure vessel head positioning and opening mechanism. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned technical problems by providing a pressure vessel head positioning and opening mechanism, thereby ensuring rapid positioning and opening of the head.

[0007] In view of this, the present invention provides a pressure vessel head positioning and opening mechanism, including a boring machine and a boring tool disposed on the boring machine, wherein a CNC cutting tool is embedded at the end of the boring tool and a bed is disposed outside the boring tool; The bed frame is symmetrically provided with two rotating grooves and a misaligned groove; The rotating groove is provided with a positioning and clamping assembly, which includes a rotating disk. The rotating disk has several fixing holes on its surface. A multi-stage telescopic rod is embedded in the fixing holes, and a clamping block is installed at the outer end of the multi-stage telescopic rod. A drive assembly is provided above the rotating disk. The drive assembly includes a through-type lead screw motor, and a screw is internally threadedly connected to the through-type lead screw motor. The rotating disk is provided with a connecting and fixing assembly, which includes a plurality of first connecting blocks. One side surface of the first connecting block is provided with an air storage hole, and one side surface of the first connecting block is provided with an annular sealing and fixing groove. An annular sealing ring is embedded in the annular sealing and fixing groove. The screw is provided with a second connecting block on the outside. A suction hole is opened through one side surface of the second connecting block, a suction pipe is installed on one side surface of the second connecting block, and an annular sealing groove is opened on one side surface of the second connecting block.

[0008] Preferably, the rotating disk is rotatably disposed inside the rotating groove, and the plurality of fixing holes are circumferentially distributed.

[0009] Preferably, the multi-stage telescopic rod and the clamping block are rotatably disposed inside the misaligned groove, and the vertical cross-sections of the clamping blocks are all different.

[0010] Preferably, a plurality of first magnetic blocks are installed on both opposite ends of the rotating disk. The plurality of first magnetic blocks are distributed equidistantly in a circle. The number of first magnetic blocks is the same as that of the multi-stage telescopic rods, and the positions of the first magnetic blocks and the multi-stage telescopic rods correspond to each other.

[0011] Preferably, a second magnetic block is installed on each of the inner walls of opposite sides of the rotating groove, and the second magnetic block and the first magnetic block are arranged in opposite directions.

[0012] Preferably, the through-type lead screw motor is embedded in the bed, and both ends of the through-type lead screw motor are located outside the bed.

[0013] Preferably, the first connecting block is fixedly installed on the outer end surface of the multi-stage telescopic rod, the first connecting block is rotatably disposed inside the misaligned groove, the air storage hole is concentrically arranged with the annular sealing fixing groove, and the outer surface of the annular sealing ring is located outside the annular sealing fixing groove.

[0014] Preferably, the second connecting block is rotatably connected to the inner end of the screw, and the inner diameter of the air intake hole is the same as that of the air storage hole.

[0015] Preferably, the air intake hole and the air intake pipe are concentrically arranged, the air intake hole and the air intake pipe are connected, the annular sealing groove is concentrically arranged with the air intake hole, and the annular sealing groove and the annular sealing fixing groove have the same size and specifications.

[0016] Preferably, a limiting telescopic rod is installed on the inner surface of the second connecting block, and the end of the limiting telescopic rod away from the second connecting block is fixedly installed on the surface of the bed.

[0017] Compared with the prior art, the present invention provides a pressure vessel head positioning and opening mechanism, which has the following advantages: This invention, through the cooperation of the positioning and clamping assembly, the driving assembly, and the connecting and fixing assembly, can rotate and select a suitable clamping block for positioning and clamping according to different specifications of end caps, thereby further improving the replacement efficiency of the clamping block, further ensuring the boring efficiency of the boring machine, and further expanding the applicability of the boring machine.

[0018] This invention enables the selection of the most suitable clamping block based on the surface of the end cap, avoiding problems such as unstable positioning or surface damage caused by mismatched clamping surfaces, and realizing a single mechanism that can adapt to the positioning and clamping mechanisms of various end cap specifications.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This invention has a simple structure and is easy to operate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a pressure vessel head positioning and opening mechanism proposed in this invention; Figure 2 This is a schematic diagram of the internal components of the bed of a pressure vessel head positioning and opening mechanism proposed in this invention; Figure 3 This is a schematic diagram of the rotation limit of the positioning clamping component of a pressure vessel head positioning and opening mechanism proposed in this invention; Figure 4 This is a schematic diagram of the positioning rod connection of a pressure vessel head positioning and opening mechanism proposed in this invention; Figure 5 This is a schematic diagram of the clamping block connection of a pressure vessel head positioning and opening mechanism proposed in this invention; Figure 6 This is a schematic diagram of the drive assembly of a pressure vessel head positioning and opening mechanism proposed in this invention; Figure 7 This is a schematic diagram of the drive assembly connection of a pressure vessel head positioning and opening mechanism proposed in this invention; Figure 8 This is a schematic diagram of the connection and fixing components of a pressure vessel head positioning and opening mechanism proposed in this invention.

[0021] In the diagram: 1. Boring machine; 2. Boring tool; 3. Bed; 301. Rotary groove; 302. Misalignment groove; 4. Positioning and clamping assembly; 401. Rotary disk; 402. Fixing hole; 403. Multi-stage telescopic rod; 404. Clamping block; 405. First magnetic block; 406. Second magnetic block; 5. Drive assembly; 501. Through-type lead screw motor; 502. Screw; 6. Connecting and fixing assembly; 601. First connecting block; 602. Annular sealing fixing groove; 603. Annular sealing ring; 605. Air storage hole; 606. Second connecting block; 607. Air intake hole; 608. Air intake pipe; 609. Limiting telescopic rod; 610. Annular sealing docking groove. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] Example: A positioning and opening mechanism for a pressure vessel head, such as... Figures 1-8 As shown, it includes a boring machine 1 and a boring tool 2 mounted on the boring machine 1. The boring tool 2 has a CNC cutting tool embedded at its end. At this time, the boring tool 2 mainly consists of a tool handle and a cutting tool. The boring tool 2 needs to be driven by a drive device. Since the boring tool 2 and the drive device are known technologies, they will not be specifically numbered and described here. A bed 3 is mounted on the outside of the boring tool 2. At this time, a positioning component is mounted on the bed 3 to support and position the end cap. Since the bed 3 is known technology, it will not be described in detail here. When using the boring machine 1, the pressure vessel head is placed on the bed 3, and the head is positioned and clamped by the positioning component. Then, the head is adjusted according to the required opening position, and the boring tool 2 is driven by the drive device to bore the head. Since the operation of the boring machine 1 is a well-known technology, it will be briefly described here.

[0025] like Figures 2-6 As shown, two rotating grooves 301 and a misaligned groove 302 are symmetrically opened on the bed 3. At this time, both the rotating groove 301 and the misaligned groove 302 are annular grooves and are concentric. The rotating groove 301 and the misaligned groove 302 serve as positioning and support for the positioning clamping component 4. A positioning clamping assembly 4 is installed inside the rotating groove 301. The positioning clamping assembly 4 is made of high-strength material to ensure the stability of the positioning clamping assembly 4 during the operation of the boring tool 2. The positioning clamping assembly 4 includes a rotating disk 401, which is rotatably disposed inside the rotating groove 301. The rotating disk 401 serves as the main support. Several fixing holes 402 are opened on the surface of the rotating disk 401, and these fixing holes 402 are equidistantly distributed circumferentially. Multi-stage telescopic rods 403 are embedded inside the fixing holes 402. At this time, the multi-stage telescopic rods 403 can only extend and cannot rotate. Since the multi-stage telescopic rods 403 are known technology, they will not be described in detail here. At the same time, using multi-stage telescopic rods 403 allows for a large extension distance without significantly affecting the initial space occupied by the multi-stage telescopic rods 403. A clamping block 404 is installed on the outer end of the multi-stage telescopic rods 403. Both the multi-stage telescopic rods 403 and the clamping block 404 are rotatably disposed inside the misalignment groove 302. The slot 302 provides a rotation channel for the multi-stage telescopic rod 403, preventing jamming. The vertical cross-sections of the clamping blocks 404 are different, allowing for selection of the appropriate clamping block 404 to position and clamp the end cap based on its surface condition. Several first magnetic blocks 405 are installed on opposite ends of the rotating disk 401, equidistantly distributed in a circle. The number of first magnetic blocks 405 is the same as the number of multi-stage telescopic rods 403. Corresponding to the position of the multi-stage telescopic rod 403, the central axis of the first magnetic block 405 and the multi-stage telescopic rod 403 are on the same axis. The inner walls of the rotating groove 301 on both sides are equipped with second magnetic blocks 406. The second magnetic blocks 406 and the first magnetic blocks 405 are arranged in opposite directions. Therefore, the first magnetic blocks 405 and the second magnetic blocks 406 can be magnetically connected. Since the use of the first magnetic blocks 405 and the second magnetic blocks 406 is a well-known technology, it will not be described in detail here. Before positioning the end cap, rotate the rotating disk 401 according to the specifications of the end cap surface to select a suitable clamping block 404. During the rotation of the rotating disk 401, the second magnetic block 406 will magnetically connect with the first magnetic block 405 respectively, so that each clamping block 404 can pause briefly at the clamping position to avoid over-rotation and further ensure the accuracy of the selection of the clamping block 404. At the same time, under the connection between the first magnetic block 405 and the second magnetic block 406, the clamping block 404 to be used can be positioned to ensure the stability of the operation of the clamping block 404. Furthermore, under the magnetic connection between the first magnetic block 405 and the second magnetic block 406, when the desired working position of the clamping block 404 is reached, it can automatically generate suction positioning, effectively avoiding over-rotation or under-positioning, ensuring that the clamping block 404 is accurately aligned with the clamping axis, improving the accuracy of switching and the convenience of operation. At this time, according to the condition of the end cap surface, the clamping blocks 404 on both sides of the end cap are selected respectively.

[0026] like Figure 5 , Figure 7 , Figure 8 As shown, a connecting and fixing assembly 6 is provided on the outside of the rotating disk 401. The connecting and fixing assembly 6 includes several first connecting blocks 601. The first connecting blocks 601 are fixedly installed on the outer surface of the multi-stage telescopic rod 403. At this time, the first connecting blocks 601 can drive the multi-stage telescopic rod 403 to extend. The first connecting blocks 601 are rotatably disposed inside the misalignment groove 302. The misalignment groove 302 can prevent the bed 3 from getting stuck with the first connecting blocks 601. An air storage hole 605 is opened on one side surface of the first connecting block 601. The air storage hole 605 contains external air and is not in a vacuum state. An annular sealing groove 602 is provided on one side surface of the first connecting block 601. The air storage hole 605 and the annular sealing groove 602 are concentrically arranged. At this time, the annular sealing groove 602 is arranged around the air storage hole 605. An annular sealing ring 603 is embedded in the annular sealing groove 602. Part of the outer surface of the annular sealing ring 603 is located outside the annular sealing groove 602. Since the annular sealing ring 603 is a known technology, it will not be described in detail here. A second connecting block 606 is provided on the outside of the screw 502. The second connecting block 606 is rotatably connected to the inner end of the screw 502. At this time, the screw 502 will drive the second connecting block 606 to move. A suction hole 607 is opened through one side surface of the second connecting block 606. The suction hole 607 has the same inner diameter as the air storage hole 605. At this time, the suction hole 607 and one of the air storage holes 605 are concentrically arranged. A suction pipe 608 is installed on one side surface of the second connecting block 606. At this time, the end of the suction pipe 608 away from the second connecting block 606 is connected to the pump body. Since vacuum suction is a known technology, it will not be described in detail here. The suction pipe 608 is also a flexible hose to ensure the stability of the second connecting block 606 during movement. The suction hole 607 and the suction pipe 608 are concentrically arranged. The suction port 607 and the suction pipe 608 are connected. At this time, the suction pipe 608 can absorb external gas through the suction port 607. An annular sealing groove 610 is opened on one side surface of the second connecting block 606. The annular sealing groove 610 and the suction port 607 are concentrically arranged. The annular sealing groove 610 and the annular sealing fixing groove 602 are the same size and specifications. At this time, the annular sealing groove 610 and the annular sealing fixing groove 602 are concentrically arranged. At this time, the air storage hole 605 is connected to the suction port 607. The vacuum pump drives the suction pipe 608 to draw in negative pressure, which is used in conjunction with the sealing mechanism to achieve tight locking. After the vacuum is completed, even if the vacuum pump is disconnected, the connection is still firm. There is no need for continuous energy consumption and there is no risk of air pressure leakage. The clamping stability is high.

[0027] In the initial state, the second connecting block 606 is in contact with one of the first connecting blocks 601, and the annular sealing ring 603 is simultaneously engaged inside the annular sealing groove 610. When the rotating disk 401 is rotated, the second connecting block 606 will compress the annular sealing ring 603 under the chamfering pressure, preventing the annular sealing ring 603 from getting stuck with the second connecting block 606. After the clamping block 404 is selected, the first connecting block 601 and the second connecting block 606 are in their initial state. At this time, it is necessary to connect and fix the first connecting block 601 and the second connecting block 606, and then run the vacuum pump. The gas inside the suction pipe 608 is extracted. Since the gas storage hole 605, the suction hole 607, and the suction pipe 608 are interconnected, the suction pipe 608 will simultaneously extract the gas inside the suction hole 607 and the gas storage hole 605. At this time, the suction pipe 608, the suction hole 607, and the gas storage hole 605 are in a vacuum state. The suction pipe 608 will always exert suction force on the first connecting block 601. At the same time, under the sealing effect of the annular sealing ring 603, the sealing between the first connecting block 601 and the second connecting block 606 can be guaranteed to avoid air leakage. At this time, the connection and fixation between the first connecting block 601 and the annular sealing fixing groove 602 is completed.

[0028] like Figure 6 As shown, a drive assembly 5 is provided above the rotary table 401. The drive assembly 5 includes a through-type lead screw motor 501. Since the through-type lead screw motor 501 is a known technology, it will not be described in detail here. The through-type lead screw motor 501 is embedded in the bed 3. Both ends of the through-type lead screw motor 501 are located outside the bed 3. The through-type lead screw motor 501 is internally threaded to connect a screw 502. At this time, the through-type lead screw motor 501 drives the screw 502 to move linearly. Since the lead screw transmission has a self-locking characteristic, it can still maintain the clamping force after the motor is powered off, without the need for an additional locking device, which is suitable for the heavy-load vibration environment during boring. After the first connecting block 601 and the second connecting block 606 are connected and fixed, the screw 502 is fixedly connected to one of the multi-stage telescopic rods 403. At this time, the screw 502 will drive the multi-stage telescopic rod 403 to extend, and then position the end cap. This causes the through-type lead screw motor 501 to run, and the through-type lead screw motor 501 will drive the screw 502 to move towards the end cap. The multi-stage telescopic rod 403 will move towards the end cap simultaneously, and the multi-stage telescopic rod 403 will drive the clamping block 404 to move simultaneously until the two clamping blocks 404 contact the surface of the end cap, completing the positioning and clamping of the end cap.

[0029] A limiting telescopic rod 609 is installed on the inner surface of the second connecting block 606, and the end of the limiting telescopic rod 609 away from the second connecting block 606 is fixedly installed on the surface of the bed 3.

[0030] During the movement of the second connecting block 606, since the screw 502 is in a rotating state, in order to prevent the second connecting block 606 from rotating, a limiting telescopic rod 609 is set to further limit the position of the second connecting block 606. Since the limiting telescopic rod 609 can only move, the second connecting block 606 cannot rotate, thereby ensuring the stability of the second connecting block 606 during operation.

[0031] With the cooperation of the positioning and clamping component 4, the driving component 5, and the connecting and fixing component 6, firstly, the appropriate clamping block 404 can be rotated and selected for positioning and clamping according to different specifications of end caps, thereby improving the replacement efficiency of the clamping block 404, further ensuring the boring efficiency of the boring machine 1, and further improving the applicability of the boring machine 1. Secondly, the most suitable clamping block 404 can be selected according to the surface of the end cap, avoiding the problem of unstable positioning or surface damage caused by mismatch of clamping surfaces, thus realizing a positioning and clamping mechanism that adapts to multiple specifications of end caps with one set of mechanisms.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A positioning and opening mechanism for a pressure vessel head, comprising a boring machine (1), characterized in that, And a boring tool (2) is provided on the boring machine (1), the end of the boring tool (2) is inlaid with a CNC cutting tool, and a bed (3) is provided on the outside of the boring tool (2); The bed (3) has two symmetrically arranged rotating grooves (301) and misaligned grooves (302); The rotating groove (301) is provided with a positioning clamping assembly (4). The positioning clamping assembly (4) includes a rotating disk (401). The rotating disk (401) has several fixing holes (402) on its surface. A multi-stage telescopic rod (403) is embedded in the fixing holes (402). A clamping block (404) is installed at the outer end of the multi-stage telescopic rod (403). A drive assembly (5) is provided above the rotating disk (401). The drive assembly (5) includes a through-type lead screw motor (501), and a screw (502) is internally threadedly connected to the through-type lead screw motor (501). The rotating disk (401) is provided with a connecting and fixing assembly (6) on its outside. The connecting and fixing assembly (6) includes a plurality of first connecting blocks (601). An air storage hole (605) is opened on one side surface of the first connecting block (601). An annular sealing and fixing groove (602) is opened on one side surface of the first connecting block (601). An annular sealing ring (603) is embedded in the annular sealing and fixing groove (602). The screw (502) is provided with a second connecting block (606) on the outside. A suction hole (607) is provided through one side surface of the second connecting block (606). A suction pipe (608) is installed on one side surface of the second connecting block (606). An annular sealing groove (610) is provided on one side surface of the second connecting block (606).

2. The pressure vessel head positioning and opening mechanism according to claim 1, characterized in that, The rotating disk (401) is rotatably disposed inside the rotating groove (301), and a plurality of the fixing holes (402) are circumferentially distributed.

3. The pressure vessel head positioning and opening mechanism according to claim 1, characterized in that, The multi-stage telescopic rod (403) and the clamping block (404) are rotatably disposed inside the misaligned groove (302), and the vertical cross sections of the clamping blocks (404) are different.

4. The pressure vessel head positioning and opening mechanism according to claim 1, characterized in that, The rotating disk (401) has several first magnetic blocks (405) installed on both ends of the rotating disk (401). The several first magnetic blocks (405) are distributed equidistantly in a circle. The number of first magnetic blocks (405) is the same as that of the multi-stage telescopic rod (403). The positions of the first magnetic blocks (405) and the multi-stage telescopic rod (403) are corresponding.

5. The pressure vessel head positioning and opening mechanism according to claim 4, characterized in that, The rotating groove (301) has a second magnetic block (406) installed on each of its two inner walls. The second magnetic block (406) and the first magnetic block (405) are arranged in opposite directions.

6. The pressure vessel head positioning and opening mechanism according to claim 1, characterized in that, The through-type lead screw motor (501) is embedded in the bed (3), and both ends of the through-type lead screw motor (501) are located outside the bed (3).

7. The pressure vessel head positioning and opening mechanism according to claim 1, characterized in that, The first connecting block (601) is fixedly installed on the outer end surface of the multi-stage telescopic rod (403). The first connecting block (601) is rotatably disposed inside the misaligned groove (302). The air storage hole (605) and the annular sealing fixing groove (602) are concentrically arranged. The outer surface of part of the annular sealing ring (603) is located outside the annular sealing fixing groove (602).

8. The pressure vessel head positioning and opening mechanism according to claim 1, characterized in that, The second connecting block (606) is rotatably connected to the inner end of the screw (502), and the inner diameter of the air intake hole (607) is the same as that of the air storage hole (605).

9. The pressure vessel head positioning and opening mechanism according to claim 1, characterized in that, The air intake hole (607) and the air intake pipe (608) are concentrically arranged, the air intake hole (607) and the air intake pipe (608) are through-connected, the annular sealing docking groove (610) and the air intake hole (607) are concentrically arranged, and the annular sealing docking groove (610) and the annular sealing fixing groove (602) are the same size and specifications.

10. A pressure vessel head positioning and opening mechanism according to claim 1, characterized in that, A limiting telescopic rod (609) is installed on the inner surface of the second connecting block (606), and the end of the limiting telescopic rod (609) away from the second connecting block (606) is fixedly installed on the surface of the bed (3).

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