Gas cylinder inner wall polishing equipment and method

Abstract

The invention relates to the technical field of gas cylinder machining, in particular to gas cylinder inner wall polishing equipment and method. Comprising a rack, a liquid receiving box and an auxiliary mechanism, the auxiliary mechanism comprises a lead screw sliding table, an L-shaped plate, a rotating shaft, a connecting base, a liquid conveying pipe, a jet flow spray head, a clamping device and a rotating device, a gas cylinder is fixed through the clamping device, then the lead screw sliding table is controlled to act to drive the gas cylinder to move, and when the gas cylinder moves, the liquid conveying pipe and the jet flow spray head enter the gas cylinder; the screw rod sliding table drives the gas cylinder to move to a machining point and then stops acting, at the moment, the liquid conveying pipe is close to the inner bottom of the gas cylinder but does not abut against the inner bottom of the gas cylinder, then polishing liquid is conveyed into the liquid conveying pipe through an external draw-off pump and a conveying pipeline and sprayed out through a plurality of jet flow sprayers, and the rotating device drives the gas cylinder to rotate. And the screw rod sliding table drives the gas cylinder to linearly move and gradually get away from the liquid conveying pipe, so that the inner wall of the gas cylinder is uniformly polished, and the polishing uniformity of the inner wall of the gas cylinder can be better guaranteed when the gas cylinder is polished.

Description

Technical Field

[0001] The present invention relates to the technical field of gas cylinder processing, and in particular to a gas cylinder inner wall polishing device and method. Background Art

[0002] In the gas industry, special gases such as ultra-pure gases, electronic gases and standard gases have extremely high requirements for the smoothness of the inner walls of gas cylinders. The inner walls of ordinary gas cylinders are relatively rough and the smoothness cannot meet the requirements for containing special gases.

[0003] A search revealed prior art CN218137196U, which discloses a gas cylinder inner wall polishing device comprising a guide rail, a feed trolley, and a polishing trolley equipped with a movable locking device. A feed motor is fixedly mounted on the first end of the guide rail, the motor's rotating shaft being horizontally fixedly connected to a feed screw. The feed trolley is equipped with a feed nut that matches the feed screw. A first V-shaped frame and a second V-shaped frame are vertically mounted on the feed trolley. The first V-shaped frame has an L-shaped baffle, with the baffle's horizontal plate facing the center of the first V-shaped frame and located between the first V-shaped frame and the feed motor. A grinding motor is fixed to the polishing trolley's working platform, and a rotary rod with a rotary rod bushing is horizontally fixed to the grinding motor's rotating shaft. A polishing strip is fixed to the end of the rotary rod. This invention provides a gas cylinder inner wall polishing device that achieves comprehensive polishing of the cylinder's inner wall, achieving excellent polishing results and meeting the requirements for containing special gases.

[0004] However, the above-mentioned equipment has the following problems when in use: when the grinding motor and the feed motor are turned on, the grinding motor rotates to drive the rotary rod to rotate, and the polishing strip fixed at the end of the rotary rod rotates inside the gas cylinder. The polishing strip is attached with polishing liquid to polish the inner wall of the gas cylinder. However, the polishing strip is attached with polishing liquid to polish the inner wall of the gas cylinder. When the polishing liquid contacts the inner wall of the gas cylinder, it is easy to be gradually consumed during polishing. The inner wall of the gas cylinder has a certain depth. This method will make it difficult to ensure a uniform polishing effect when polishing the inner wall of the gas cylinder. Summary of the Invention

[0005] The object of the present invention is to provide a gas cylinder inner wall polishing device and method, which is intended to be more conducive to ensuring the uniformity of the polishing of the gas cylinder inner wall during the gas cylinder polishing process.

[0006] To achieve the above-mentioned object, the present invention provides a gas cylinder inner wall polishing device, comprising a frame, a liquid receiving box provided on the frame, a liquid outlet pipe of the liquid receiving box being connected to a liquid return pipe of an external collecting box via a movable pipe, and an auxiliary mechanism;

[0007] The auxiliary mechanism includes a screw slide, an L-shaped plate, a rotating shaft, a connecting seat, an infusion tube, a jet nozzle, a clamping device and a rotating device. The screw slide is arranged on the frame, the L-shaped plate is disassembled and installed on the slide of the screw slide, the rotating shaft is rotatably installed on the L-shaped plate, the connecting seat is installed on the end of the rotating shaft away from the L-shaped plate, and its round rod portion is rotatably connected to the liquid receiving box, the infusion tube is disassembled and installed on the frame, and is connected to the external polishing liquid delivery pipeline through a pipeline, a plurality of the jet nozzles are welded on the outlet side of the infusion tube, the clamping device is arranged on the connecting seat for fixing the gas cylinder, and the rotating device is arranged on the side of the frame close to the rotating shaft for driving the rotating shaft to rotate.

[0008] Among them, the clamping device includes a lower clamping seat, an upper clamping seat and a locking assembly, the lower clamping seat is detachably connected to the connecting seat; a gas cylinder is arranged between the upper clamping seat and the lower clamping seat, and is disassembled and installed on the lower clamping seat through the locking assembly; the locking assembly is threadedly connected to the lower clamping seat and passes through the upper clamping seat.

[0009] Wherein, a lifting frame is provided on the upper clamping seat, and the lifting frame is welded to the upper clamping seat.

[0010] Wherein, the rotating device includes a main gear and a driving assembly, the main gear is fixed on the rotating shaft; and the driving assembly is arranged on a side of the frame close to the main gear.

[0011] Wherein, the driving assembly includes a servo motor and an auxiliary gear, the servo motor is mounted on the L-shaped plate; the auxiliary gear is fixedly mounted on the output shaft of the servo motor and meshes with the main gear.

[0012] Among them, the gas cylinder inner wall polishing equipment also includes a protection mechanism, which includes a top plate and a matching component. The top plate is removably installed on the top of the L-shaped plate; the matching component is arranged on one side of the top plate.

[0013] Wherein, the mating component includes a support rod and a side plate, the support rod is threadedly connected to the top plate, and the bottom abuts against the L-shaped plate; the side plate is detachably connected to the top plate and is symmetrically arranged on both sides of the top plate.

[0014] Among them, a method for polishing the inner wall of a gas cylinder includes the following steps:

[0015] Fix the gas cylinder by means of a clamping device;

[0016] The screw slide is controlled to move the gas cylinder. When the gas cylinder moves, the infusion tube and the jet nozzle enter the gas cylinder. The screw slide drives the gas cylinder to move to the processing point and then stops.

[0017] The polishing liquid is delivered to the infusion pipe through an external extraction pump and a delivery pipe, and is sprayed out through multiple jet nozzles;

[0018] The rotating device drives the gas cylinder to rotate, and the screw slide drives the gas cylinder to move linearly and gradually away from the infusion tube, so that the inner wall of the gas cylinder is evenly polished;

[0019] After polishing is completed, stop delivering the polishing liquid, control the screw slide to move to the loading point, then release the clamping device and remove the gas cylinder.

[0020] The present invention provides a gas cylinder inner wall polishing device, which, during processing, first fixes the gas cylinder by a clamping device, then controls the action of the screw slide to drive the gas cylinder to move, and when the gas cylinder moves, the infusion tube and the jet nozzle enter the interior of the gas cylinder, and the screw slide drives the gas cylinder to move to the processing point and then stops. At this time, the infusion tube is close to the inner bottom of the gas cylinder, but does not abut it, and then, the polishing liquid is transported into the infusion tube through an external extraction pump and a delivery pipeline, and is sprayed out through multiple jet nozzles, the rotating device drives the gas cylinder to rotate, and the screw slide drives the gas cylinder to move in a straight line and gradually away from the infusion tube, thereby uniformly polishing the inner wall of the gas cylinder, which can be more conducive to ensuring the uniformity of the polishing of the inner wall of the gas cylinder during the gas cylinder polishing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0022] Figure 1 It is a schematic diagram of the overall structure of the gas cylinder inner wall polishing device according to the first embodiment of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the upper clamping seat according to the first embodiment of the present invention.

[0024] Figure 3 Schematic diagram of the structure of the infusion tube according to the first embodiment of the present invention.

[0025] Figure 4 2 is a schematic structural diagram of a top plate according to a second embodiment of the present invention.

[0026] Figure 5 Schematic diagram of the structure of a sphere according to the third embodiment of the present invention.

[0027] Figure 6 The present invention is a flow chart of a method for polishing the inner wall of a gas cylinder.

[0028] In the figure: 101-frame, 102-liquid receiving box, 103-screw slide, 104-L-shaped plate, 105-rotating shaft, 106-connecting seat, 107-infusion tube, 108-jet nozzle, 109-lower clamping seat, 110-upper clamping seat, 111-locking assembly, 112-lifting frame, 113-main gear, 114-servo motor, 115-auxiliary gear, 201-top plate, 202-support rod, 203-side plate, 301-ball, 302-limiting sleeve, 303-sealing seat. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] Example 1:

[0031] like Figures 1 to 3 As shown, Figure 1 This is a schematic diagram of the overall structure of the gas cylinder inner wall polishing equipment. Figure 2 是上夹座110的结构示意图, Figure 3 107 is a structural diagram of an infusion tube. The present invention provides a gas cylinder inner wall polishing device: comprising a frame 101, a liquid receiving box 102 and an auxiliary mechanism, wherein the auxiliary mechanism comprises a screw slide 103, an L-shaped plate 104, a rotating shaft 105, a connecting seat 106, an infusion tube 107, a jet nozzle 108, a clamping device and a rotating device, wherein the clamping device comprises a lower clamping seat 109, an upper clamping seat 110 and a locking assembly 111, and the rotating device comprises a main gear 113 and a driving assembly, wherein the driving assembly comprises a servo motor 114 and an auxiliary gear 115. The above-mentioned scheme can be more conducive to ensuring the uniformity of the polishing of the inner wall of the gas cylinder during the gas cylinder polishing process. It can be understood that the above-mentioned scheme can achieve uniform polishing of the inner wall of the gas cylinder.

[0032] In this embodiment, a liquid receiving box 102 is provided on the frame 101, and the liquid receiving box 102 is fixed by bolts. The liquid outlet pipe is connected to the return liquid pipe of the external collection box through a movable pipe. The liquid receiving box 102 is used to collect the polishing liquid overflowing from the gap cavity between the gas cylinder mouth and the infusion pipe 107 and flow it back to the external collection box through the movable pipe for collection. The polishing liquid is stored in the storage box and extracted by the extraction pump. The delivery pipe cooperates for delivery. The extraction pump is provided with a pressure regulating structure for regulating the liquid output pressure. This application mainly adopts abrasive jet polishing. At present, the roughness of 10000 mesh abrasive and water mixed jet polishing can reach 0.6μm, and the cleanliness can reach more than 99%. By increasing the mesh number to control the pressure, the roughness can reach below 0.2-0.4μm. After the frame 101 is installed, the screw slide 103 is in a vertical state, which is conducive to the upward position of the gas cylinder mouth.

[0033] Among them, the screw slide 103 is arranged on the frame 101, the L-shaped plate 104 is disassembled and installed on the slide seat of the screw slide 103, the rotating shaft 105 is rotatably installed on the L-shaped plate 104, the connecting seat 106 is installed on the end of the rotating shaft 105 away from the L-shaped plate 104, and its round rod portion is rotatably connected to the liquid receiving box 102, the infusion pipe 107 is disassembled and installed on the frame 101, and is connected to the external polishing liquid delivery pipe through a pipe, a plurality of the jet nozzles 108 are welded on the outlet side of the infusion pipe 107, the clamping device is arranged on the connecting seat 106 for fixing the gas cylinder, and the rotating device is arranged on the side of the frame 101 close to the rotating shaft 105 for driving the rotating shaft 105 to rotate. The screw slide 103 is composed of a driving servo motor, a transmission screw, a linear guide slider assembly and a slide seat. This structure is consistent with the X-axis worktable transmission structure of the vertical machining center under the existing technology. The L-shaped plate 104 is fixed by a positioning pin and bolts. The rotating shaft 105 is installed on the L-shaped plate 104 through a rotating bearing. The connecting seat 106 is T-shaped, and the disc is fixed by bolts. The round rod portion of the connecting seat 106 slides through the through hole on the liquid receiving box 102. An O-shaped wear-resistant rubber sealing ring is set in the through hole. A fixing plate is welded on the infusion pipe 107 to facilitate fixing by bolts. The inlet side flange of the infusion pipe 107 is connected to the flange on the external polishing liquid delivery pipeline through a screw nut. The jet nozzles 108 are arranged in six annular intervals to facilitate spraying the polishing liquid onto the inner wall of the gas cylinder at multiple angles. The clamping device is used to fix the gas cylinder.

[0034] Secondly, the lower clamping seat 109 is detachably connected to the connecting seat 106. A gas cylinder is positioned between the upper clamping seat 110 and the lower clamping seat 109 and is detachably mounted on the lower clamping seat 109 via the locking assembly 111. The locking assembly 111 is threadedly connected to the lower clamping seat 109 and extends through the upper clamping seat 110. The round rod of the connecting seat 106 passes through the through-hole of the liquid receiving box 102, and a disc is mounted on the end via a countersunk bolt. The disc is then bolted to the lower clamping seat 109. The lower clamping seat 109 and the upper clamping seat 110 are each provided with a gas cylinder placement groove, the inner surface of which is provided with an anti-slip pad. The locking assembly 111 is a T-shaped screw used to mount the upper clamping seat 110 on the lower clamping seat 109. When the upper clamping seat 110 and the lower clamping seat 109 rotate, they do not interfere with the inner wall of the liquid receiving box 102.

[0035] Then, the upper clamping seat 110 is provided with a lifting frame 112, which is welded to the upper clamping seat 110. This structure facilitates the installation or removal of the upper clamping seat 110. The liquid receiving box 102 is provided with a rotating sealed door with a door lock, and a liquid outlet pipe is provided on one side. The liquid outlet pipe flows back to the external collection box through a movable pipe.

[0036] Furthermore, the main gear 113 is fixed to the rotating shaft 105, and the driving assembly is arranged on the side of the frame 101 close to the main gear 113. The main gear 113 is mounted on the rotating shaft 105 by a flat key and bolts, and the driving assembly is used to drive the main gear 113 to rotate.

[0037] Finally, the servo motor 114 is mounted on the L-shaped plate 104. The auxiliary gear 115 is fixedly mounted on the output shaft of the servo motor 114 and meshes with the main gear 113. The servo motor 114 is equipped with a brake mechanism, allowing for position adjustment via inching control. The CNC cabinet is a mobile cabinet. The auxiliary gear 115 is mounted on the output shaft of the servo motor 114 using a flat key and bolts.

[0038] When the present invention is used, it is more conducive to ensuring the uniformity of the polishing of the inner wall of the gas cylinder during the polishing process of the gas cylinder. During the processing, the rotating sealing door on the liquid receiving box 102 is first opened, and then the servo motor 114 is controlled to drive the lower clamping seat 109 to rotate, and the placement groove is rotated to the front side. Then, the gas cylinder is placed on the lower clamping seat 109, and the upper clamping seat 110 is installed through the locking assembly 111 to fix the gas cylinder. Then, the screw slide 103 is controlled to move to drive the gas cylinder to move upward. When the gas cylinder moves, the infusion tube 107 and the jet nozzle 108 enter Inside the gas cylinder, the screw slide 103 drives the gas cylinder to move to the processing point and then stops. At this time, the infusion tube 107 is close to the inner bottom of the gas cylinder, but not in contact with it. Then, the polishing liquid is transported into the infusion tube 107 through an external extraction pump and a delivery pipeline, and is sprayed out through multiple jet nozzles 108. The rotating device drives the gas cylinder to rotate, and the screw slide 103 drives the gas cylinder to move slowly downward in a straight line and gradually away from the infusion tube 107, so as to evenly polish the inner wall of the gas cylinder, which can be more conducive to ensuring the uniformity of the polishing of the inner wall of the gas cylinder during the polishing process of the gas cylinder.

[0039] Example 2:

[0040] like Figure 4 As shown, Figure 4FIG2 is a schematic structural diagram of a top plate 201. Based on the first embodiment, the present invention provides a gas cylinder inner wall polishing device, which further includes a protective mechanism comprising a top plate 201 and a mating assembly. The mating assembly comprises a support rod 202 and a side plate 203.

[0041] The top plate 201 is detachably mounted on the top of the L-shaped plate 104, and the mating assembly is arranged on one side of the top plate 201. The top plate 201 is fixed by bolts.

[0042] Next, the support rod 202 is threadedly connected to the top plate 201, with its bottom abutting against the L-shaped plate 104. The side plates 203 are detachably connected to the top plate 201 and symmetrically arranged on either side of the top plate 201. The externally threaded stepped ends of the support rod 202 are directly mounted in the threaded holes of the top plate 201. The side plates 203 are secured by bolts.

[0043] In this embodiment, the top plate 201 and the side plate 203 are provided to isolate and protect the transmission areas of the main gear 113 and the auxiliary gear 115, thereby improving the processing safety of the equipment.

[0044] Example 3:

[0045] 如5所示,其中 Figure 5 It is a structural diagram of the ball 301. On the basis of the first embodiment, the present invention provides a gas cylinder inner wall polishing device, which also includes a stabilizing mechanism. The stabilizing mechanism includes the ball 301, a limiting sleeve 302 and a sealing seat 303.

[0046] The plurality of balls 301 are integrally mounted on the shaft 105; the limiting sleeve 302 is detachably connected to the L-shaped plate 104 and slidably coupled to the plurality of balls 301; the sealing seat 303 is detachably connected to the limiting sleeve 302 and slidably coupled to the shaft 105. The shaft 105 is provided with a plurality of balls 301, and the limiting sleeve 302 can be slidably mounted on the outside of the balls 301. The sealing seat 303 is provided with an O-ring in a circular hole that mates with the shaft 105 and is bolted to the limiting sleeve 302. The limiting sleeve 302 is fixed to the L-shaped plate 104 via a locating pin and bolts.

[0047] In this embodiment, when the rotating shaft 105 rotates, the plurality of balls 301 and the limiting sleeve 302 can form a rotating contact support structure, which is beneficial to improving the stability of the rotating shaft 105.

[0048] Finally, if Figure 6 As shown, Figure 6It is a flow chart of a gas cylinder inner wall polishing method, and the gas cylinder inner wall polishing method comprises the following steps:

[0049] S1: fixing the gas cylinder through the clamping device;

[0050] S2: controlling the action of the lead screw sliding table 103 to drive the gas cylinder to move, when the gas cylinder moves, the infusion tube 107 and the jet nozzle 108 enter the inside of the gas cylinder, the lead screw sliding table 103 drives the gas cylinder to move to the processing point and stops the action;

[0051] S3: through the external extraction pump and the conveying pipeline, the polishing liquid is conveyed into the infusion tube 107 and sprayed through the multiple jet nozzles 108;

[0052] S4: the rotating device drives the gas cylinder to rotate, the lead screw sliding table 103 drives the gas cylinder to move linearly and gradually away from the infusion tube 107, so that the uniform polishing of the gas cylinder inner wall is carried out;

[0053] S5: after the polishing is completed, the polishing liquid conveying is stopped, the lead screw sliding table 103 is controlled to move to the feeding point, then the clamping device can be released and the gas cylinder can be taken down.

[0054] The above disclosed is only one or more preferred embodiments of the application, and cannot limit the scope of the application, and those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the claims of the application still belong to the scope covered by the application.

Claims

1. A gas cylinder inner wall polishing device, comprising a frame, a liquid receiving box disposed on the frame, a liquid outlet pipe of the liquid receiving box being connected to a liquid return pipe of an external collecting box through a movable pipe, characterized in that: It also includes auxiliary agencies; The auxiliary mechanism includes a screw slide, an L-shaped plate, a rotating shaft, a connecting seat, an infusion tube, a jet nozzle, a clamping device and a rotating device. The screw slide is arranged on the frame, the L-shaped plate is disassembled and installed on the slide of the screw slide, the rotating shaft is rotatably installed on the L-shaped plate, the connecting seat is installed on the end of the rotating shaft away from the L-shaped plate, and its round rod portion is rotatably connected to the liquid receiving box, the infusion tube is disassembled and installed on the frame, and is connected to the external polishing liquid delivery pipeline through a pipeline, a plurality of the jet nozzles are welded on the outlet side of the infusion tube, the clamping device is arranged on the connecting seat for fixing the gas cylinder, and the rotating device is arranged on the side of the frame close to the rotating shaft for driving the rotating shaft to rotate.

2. The gas cylinder inner wall polishing device according to claim 1, characterized in that: The clamping device includes a lower clamping seat, an upper clamping seat and a locking assembly. The lower clamping seat is detachably connected to the connecting seat; a gas cylinder is arranged between the upper clamping seat and the lower clamping seat, and is detachably installed on the lower clamping seat through the locking assembly; the locking assembly is threadedly connected to the lower clamping seat and passes through the upper clamping seat.

3. The gas cylinder inner wall polishing device according to claim 2, characterized in that: A lifting frame is provided on the upper clamping seat, and the lifting frame is welded to the upper clamping seat.

4. The gas cylinder inner wall polishing device according to claim 1, characterized in that: The rotating device includes a main gear and a driving assembly. The main gear is fixed on the rotating shaft; the driving assembly is arranged on a side of the frame close to the main gear.

5. The gas cylinder inner wall polishing device according to claim 4, characterized in that : The driving assembly includes a servo motor and an auxiliary gear. The servo motor is mounted on the L-shaped plate. The auxiliary gear is fixedly mounted on the output shaft of the servo motor and meshes with the main gear.

6. The gas cylinder inner wall polishing device according to claim 1, characterized in that: The gas cylinder inner wall polishing device also includes a protection mechanism, which includes a top plate and a matching component. The top plate is detachable and installed on the top of the L-shaped plate; the matching component is arranged on one side of the top plate.

7. The gas cylinder inner wall polishing device according to claim 6, characterized in that: The mating assembly includes a support rod and a side plate. The support rod is threadedly connected to the top plate, and the bottom abuts against the L-shaped plate. The side plates are detachably connected to the top plate and are symmetrically arranged on both sides of the top plate.

8. A method for polishing the inner wall of a gas cylinder, applicable to the gas cylinder inner wall polishing device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Fix the gas cylinder by means of a clamping device; The screw slide is controlled to move the gas cylinder. When the gas cylinder moves, the infusion tube and the jet nozzle enter the gas cylinder. The screw slide drives the gas cylinder to move to the processing point and then stops. The polishing liquid is delivered to the infusion pipe through an external extraction pump and a delivery pipe, and is sprayed out through multiple jet nozzles; The rotating device drives the gas cylinder to rotate, and the screw slide drives the gas cylinder to move linearly and gradually away from the infusion tube, so that the inner wall of the gas cylinder is evenly polished; After polishing is completed, stop delivering the polishing liquid, control the screw slide to move to the loading point, then release the clamping device and remove the gas cylinder.

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