Automatic gas filling detection device for liquefied gas cylinder

Abstract

The application discloses a liquefied gas cylinder automatic inflation detection device and relates to the field of gas cylinder filling processing.The device comprises a body part, a center positioning part and a rack part; the end of a lifting air cylinder is fixedly connected with a lifting drag plate, the end of an inflation positioning air cylinder is fixedly connected with a lifting positioning plate, and the bottom of the lifting positioning plate is fixedly connected with a laser sensor at one end; the surface of an inflation connecting plate is fixedly connected with an inflation positioning block, and the inside of the inflation connecting plate is fixedly connected with an inflation gun; the inside of the body part is installed with a servo indexing part, a driving wheel is movably installed on the output end of a servo motor with a transmission belt; the clamping part comprises a clamping base fixedly connected to the top of the rack part; the device replaces manual operation with automatic clamping positioning and inflation linkage operation, greatly improves inflation efficiency and reduces labor cost, guarantees docking accuracy through servo indexing and laser positioning, and improves the first-time qualification rate of inflation.

Description

Technical Field

[0001] This invention relates to the field of gas cylinder filling and processing technology, specifically to an automatic filling and detection device for liquefied petroleum gas (LPG) cylinders. Background Technology

[0002] In the production process of liquefied petroleum gas (LPG) cylinders, air tightness testing is a core quality control process to ensure the pressure resistance of the cylinder. This process requires pre-filling the cylinder with compressed air at a set pressure as a leak detection medium. The efficiency and accuracy of the filling process directly determine the overall capacity of the cylinder production line and the reliability of the test results, making it a key link in the field of gas cylinder filling and processing technology.

[0003] Currently, the filling of liquefied petroleum gas (LPG) cylinders is generally done manually, with operators holding a filling gun and aiming it at the valve to complete the filling. This method cannot be adapted to the flow rhythm of automated continuous production lines and cannot meet the high-efficiency requirements of large-scale cylinder production. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic filling and detection device for liquefied petroleum gas cylinders, so as to solve the problems that the efficiency of manual filling in the prior art is not ideal and cannot meet the needs of automated continuous production.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic filling and detection device for liquefied petroleum gas cylinders, comprising a body component, a central positioning component, and a frame component; the central positioning component is fixedly connected to one end of the body component, the central positioning component includes a lifting cylinder fixedly connected to one end of the body component, a lifting slide plate fixedly connected to the end of the lifting cylinder, an inflation positioning cylinder fixedly connected to the top of the lifting slide plate, a lifting positioning plate fixedly connected to the end of the inflation positioning cylinder, and a laser sensor fixedly connected to one end of the bottom of the lifting positioning plate; an inflation component is fixedly connected to the bottom of the lifting positioning plate, the inflation component includes an inflation pressing cylinder fixedly connected to the other end of the bottom of the lifting positioning plate, an inflation connecting plate fixedly connected to the end of the inflation pressing cylinder, and the surface of the inflation connecting plate is fixedly... An inflatable positioning block is fixedly connected to the inflatable connecting plate, and an air gun is fixedly connected inside the inflatable connecting plate. A servo indexing component is installed inside the body component. The servo indexing component includes a mounting plate fixedly connected inside the body component. A servo motor is fixedly connected to one end of the mounting plate, and a drive wheel is movably mounted on the other end of the mounting plate. A transmission belt is movably mounted on the drive wheel and the output end of the servo motor. A driven wheel is movably mounted on the other end of the surface of the mounting plate. A frame component is fixedly connected to the bottom of the body component. A clamping component is fixedly connected to the top of the frame component. The clamping component includes a clamping base fixedly connected to the top of the frame component. A clamping cylinder is fixedly connected to one end of the clamping base. A clamping slide is fixedly connected to the end of the clamping cylinder. A secondary wheel is movably mounted on one end of the clamping slide.

[0006] Furthermore, a linear guide rail is fixedly connected to the surface of the body component, and several sets of the linear guide rail are provided, with the lifting slide plate engaging with the linear guide rail.

[0007] Furthermore, a first linear bearing is provided between the clamping slide and the clamping base, and the clamping slide slides horizontally along the clamping base via the first linear bearing.

[0008] Furthermore, a second linear bearing is provided between the lifting slide and the lifting positioning plate, and the lifting positioning plate is vertically slidably connected to the lifting slide through the second linear bearing.

[0009] Furthermore, the top of the wheel surfaces of the driving wheel and the driven wheel protrude from the upper end surface of the fuselage component, and the axes of the driving wheel and the driven wheel are parallel to each other and are both arranged horizontally.

[0010] Furthermore, a positioning sleeve is fixedly connected to the bottom of the lifting positioning plate, and the axis of the positioning sleeve coincides with the axis of the air gun.

[0011] Furthermore, the axis of the secondary wheel is vertically oriented, and there are two sets of secondary wheels.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This invention achieves fully automated operation of liquefied gas cylinder clamping and positioning, valve calibration, and filling docking through the coordinated linkage of clamping components, servo indexing components, center positioning components, and filling components. It replaces the traditional manual filling operation mode, increasing production efficiency by more than three times compared to manual filling. Moreover, the filling process does not require the full participation of operators, effectively reducing the labor costs of enterprises and adapting to the production needs of continuous automated production lines.

[0014] 2. This invention uses a servo motor to drive the circumferential rotation of the gas cylinder, combined with the precise identification of the valve port position by a laser sensor, to achieve accurate calibration of the inflation angle. With the coaxial positioning of the positioning sleeve and the guiding docking structure of the inflation positioning block, the docking accuracy and sealing reliability of the inflation gun and the valve port are guaranteed. The single-cylinder inflation pass rate is high, and it can be adapted to liquefied gas cylinders of different specifications and models with different initial valve port angles, making the equipment more versatile. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0017] Figure 2 This is a partial structural diagram of the fuselage component and the servo indexing component provided in an embodiment of the present invention;

[0018] Figure 3 This is a partial structural diagram of the mounting plate and drive wheel provided in an embodiment of the present invention;

[0019] Figure 4 This is a partial structural diagram of the servo motor and drive belt provided in an embodiment of the present invention;

[0020] Figure 5 This is a partial structural diagram of the lifting slide and lifting positioning plate provided in an embodiment of the present invention;

[0021] Figure 6 This is a partial structural diagram of the linear guide rail and lifting cylinder provided in an embodiment of the present invention;

[0022] Figure 7 This is a partial structural diagram of the auxiliary wheel and clamping base provided in an embodiment of the present invention;

[0023] Figure 8 This is a partial structural diagram of the clamping cylinder and clamping base provided in an embodiment of the present invention;

[0024] Figure 9 This is a partial structural diagram of the inflatable pressing cylinder and the inflatable connecting plate provided in an embodiment of the present invention;

[0025] Figure 10 This is a partial structural diagram of the air gun and air positioning block provided in an embodiment of the present invention;

[0026] Figure 11 This is a schematic diagram of the fuselage component structure provided in an embodiment of the present invention;

[0027] Figure 12 This is a schematic diagram of the rack component structure provided in an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Machine body components; 2. Servo indexing components; 201. Driven wheel; 202. Drive wheel; 203. Servo motor; 204. Transmission belt; 205. Mounting plate; 3. Center positioning components; 4. Clamping components; 401. Auxiliary wheel; 402. Clamping slide; 403. First linear bearing; 404. Clamping cylinder; 405. Clamping base; 5. Inflation components; 501. Inflation positioning cylinder; 502. Second linear bearing; 503. Lifting slide; 504. Lifting positioning plate; 505. Laser sensor; 506. Linear guide rail; 507. Lifting cylinder; 508. Positioning sleeve; 6. Frame components; 7. Inflation gun; 8. Inflation positioning block; 9. Inflation clamping cylinder; 10. Inflation connecting plate. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] As attached Figure 1 To be continued Figure 12 As shown:

[0032] This invention provides an automatic filling and detection device for liquefied petroleum gas (LPG) cylinders, comprising a body component 1, a central positioning component 3, and a frame component 6. The central positioning component 3 is fixedly connected to one end of the body component 1. The central positioning component 3 includes a lifting cylinder 507 fixedly connected to one end of the body component 1. A lifting slide 503 is fixedly connected to the end of the lifting cylinder 507. An inflation positioning cylinder 501 is fixedly connected to the top of the lifting slide 503. A lifting positioning plate 504 is fixedly connected to the end of the inflation positioning cylinder 501. A laser sensor 505 is fixedly connected to one end of the bottom of the lifting positioning plate 504. An inflation component 5 is fixedly connected to the bottom of the lifting positioning plate 504. The inflation component 5 includes a fixed... An inflation-pressing cylinder 9 is connected to the other end of the bottom of the lifting positioning plate 504. An inflation connecting plate 10 is fixedly connected to the end of the inflation-pressing cylinder 9. An inflation positioning block 8 is fixedly connected to the surface of the inflation connecting plate 10. An inflation gun 7 is fixedly connected inside the inflation connecting plate 10. A servo indexing component 2 is installed inside the body component 1. The servo indexing component 2 includes a mounting plate 205 fixedly connected inside the body component 1. A servo motor 203 is fixedly connected to one end of the mounting plate 205. A drive wheel 202 is movably mounted on the other end of the mounting plate 205. A transmission belt 204 is movably mounted on the output end of the drive wheel 202 and the servo motor 203. The other end of the surface of the mounting plate 205 is movably mounted on the other end of the mounting plate 205. A driven wheel 201 is mounted on the machine body component 1; a frame component 6 is fixedly connected to the bottom of the machine body component 1, and a clamping component 4 is fixedly connected to the top of the frame component 6. The clamping component 4 includes a clamping base 405 fixedly connected to the top of the frame component 6, a clamping cylinder 404 fixedly connected to one end of the clamping base 405, a clamping slide 402 fixedly connected to the end of the clamping cylinder 404, a secondary wheel 401 movably mounted on one end of the clamping slide 402, a linear guide rail 506 fixedly connected to the surface of the machine body component 1, and several sets of linear guide rails 506 are provided. A lifting slide 503 is fitted into the linear guide rail 506, and a first linear bearing 4 is provided between the clamping slide 402 and the clamping base 405. 03. The clamping slide 402 slides horizontally along the clamping base 405 via the first linear bearing 403. A second linear bearing 502 is provided between the lifting slide 503 and the lifting positioning plate 504. The lifting positioning plate 504 is vertically slidably connected to the lifting slide 503 via the second linear bearing 502. The top of the wheel surfaces of the driving wheel 202 and the driven wheel 201 protrude from the upper end surface of the body component 1. The axes of the driving wheel 202 and the driven wheel 201 are parallel to each other and are both arranged horizontally. A positioning sleeve 508 is fixedly connected to the bottom of the lifting positioning plate 504. The axis of the positioning sleeve 508 coincides with the axis of the air gun 7. The axis of the auxiliary wheel 401 is arranged vertically. There are two sets of auxiliary wheels 401.

[0033] After the liquefied gas cylinder to be filled is vertically conveyed by the front-end conveyor line to the upper filling station of the machine body component 1, the clamping component 4 fixed to the top of the frame component 6 is activated. The piston rod of the clamping cylinder 404 on the clamping base 405 extends, pushing the clamping slide 402 to slide horizontally towards the cylinder side along the clamping base 405 through the first linear bearing 403. The two sets of auxiliary wheels 401 with vertically arranged axes installed at the end of the clamping slide 402 are fed synchronously and abut against the side wall of the cylinder from the radial side, pressing the cylinder against the wheel surface of the driving wheel 202 and driven wheel 201 of the servo indexing component 2. The driving wheel 202 and driven wheel 201 are both installed on the mounting plate 205 inside the machine body component 1. The top of both wheel surfaces protrudes from the upper end surface of the machine body component 1. The axes are parallel to each other and arranged horizontally. Together with the two sets of auxiliary wheels 401, they complete the radial clamping and rotational support of the cylinder. Subsequently, the lifting cylinder 507 of the central positioning component 3 is activated. The piston rod of the lifting cylinder 507, fixed to the end of the body component 1, extends and drives the lifting slide 503 to descend vertically along the linear guide rail 506 on the surface of the body component 1 to the preset detection height. The lifting positioning plate 504 descends synchronously with the lifting slide 503, and the laser sensor 505 fixed to one end of the bottom of the lifting positioning plate 504 is simultaneously in place. The laser sensor 505 adopts the diffuse reflection detection principle. The emitting end projects the detection beam vertically downward. The detection path of the beam falls on the circumferential rotation trajectory of the valve at the top of the cylinder. Moreover, the detection reference plane and the axis of the inflation gun 7 are in the same axial plane, ensuring that the positioning reference and the inflation reference are completely consistent. At this time, the servo motor 203 of the servo indexing component 2 starts. The servo motor 203 drives the drive wheel 202 to rotate at a constant speed through the transmission belt 204. The friction between the wheel surface and the bottle body drives the steel cylinder to rotate around its own axis. The driven wheel 201 rotates synchronously with the steel cylinder to provide auxiliary support. During the rotation of the steel cylinder, the upper valve assembly moves synchronously with the bottle body. When the positioning feature surface on the valve corresponding to the position of the inflation port enters the detection range of the laser sensor 505, the laser beam is reflected by the feature surface and captured by the sensor receiver. When the intensity of the reflected light reaches the preset trigger threshold, the laser sensor 505 outputs a position sensing signal to the external equipment control system. The external control system immediately sends a stop lock command to the servo motor 203. The servo motor 203 stops outputting and locks the output shaft. The transmission belt 204 and the drive wheel 202 lock the circumferential position of the steel cylinder, so that the valve inflation port is accurately stopped at the preset inflation angle corresponding to the inflation gun 7, thus completing the circumferential angle positioning of the valve port.

[0034] After circumferential positioning is completed, the piston rod of the inflation positioning cylinder 501 fixed to the top of the lifting slide 503 extends, pushing the lifting positioning plate 504 to continue to feed vertically downward along the lifting slide 503 through the second linear bearing 502, so that the positioning sleeve 508 at the bottom of the lifting positioning plate 504 is precisely fitted onto the outer cylindrical surface of the gas cylinder valve inflation port. Utilizing the structural characteristic that the positioning sleeve 508 and the axis of the inflation gun 7 coincide, the coaxiality calibration of the inflation gun 7 and the valve port and the precise positioning of the inflation docking height are completed simultaneously. After coaxial positioning is completed, the inflation component 5 is activated. The piston rod of the inflation clamping cylinder 9, which is fixed to the other end of the bottom of the lifting positioning plate 504, extends and pushes the inflation connecting plate 10 vertically downward. The inflation positioning block 8 on the surface of the inflation connecting plate 10 first contacts the valve port end face to complete the docking guidance correction and offset the slight deviation of the circumferential positioning. Then, the air inlet end of the inflation gun 7 is tightly pressed against the valve port sealing surface to form a sealing cavity. The inflation passage is opened and the test gas at the set pressure is injected into the cylinder. After the inflation pressure reaches the preset threshold and the pressure holding test is completed, the inflation gun 7 closes the valve to stop the gas supply. The inflation clamping cylinder 9, the inflation positioning cylinder 501, and the lifting cylinder 507 move upward and reset in sequence. The clamping cylinder 404 drives the auxiliary wheel 401 to retract and release the cylinder clamp. The cylinder that has been inflated is sent out of the station by the conveyor line, and the single inflation cycle ends.

[0035] Working principle: After the liquefied gas cylinder is transferred from the conveyor line to the machine body component 1 above the frame component 6, the equipment starts the filling process. The clamping component 4, fixed to the top surface of the frame component 6, is activated first. The output rod of the clamping cylinder 404 on the side of the clamping base 405 extends and drives the clamping slide 402 to feed towards the cylinder body through the horizontal guide of the first linear bearing 403. The two sets of auxiliary wheels 401 arranged vertically at the end of the clamping slide 402 abut against the side wall of the cylinder body, pushing the cylinder to the side of the servo indexing component 2. Together with the driving wheel 202 and driven wheel 201 arranged horizontally on the mounting plate 205, they form a three-point rotating clamping structure for the cylinder body. The tops of the driving wheel 202 and driven wheel 201 protrude from the upper surface of the machine body component 1 to ensure contact with the cylinder body. Effective frictional contact; then the center positioning component 3 fixed to the end of the body component 1 enters the coarse positioning stage, the lifting cylinder 507 drives the lifting slide 503 to descend vertically along the linear guide rail 506, driving the lifting positioning plate 504 to the preset detection height, the laser sensor 505 at the bottom of the lifting positioning plate 504 enters the working state, and the linear laser beam emitted by it is projected radially along the cylinder to the circumferential rotation area of ​​the valve. At this time, the servo motor 203 of the servo indexing component 2 starts, and drives the drive wheel 202 to rotate at a constant speed through the transmission belt 204. Relying on the friction between the wheel surface and the cylinder body, the cylinder is driven to rotate circumferentially around its own axis. The driven wheel 201 rotates synchronously with the cylinder body to provide auxiliary support. When the characteristic protrusion corresponding to the valve filling port is... As the bottle rotates to the laser beam path, the travel difference of the reflected beam triggers the laser sensor 505 to output a positioning signal. The control system immediately shuts down the servo motor 203 and locks the rotation position, completing the circumferential angle calibration of the valve port. After circumferential positioning is completed, the center positioning component 3 enters the fine positioning stage. The output rod of the inflation positioning cylinder 501 at the top of the lifting slide 503 extends and pushes the lifting positioning plate 504 to continue descending relative to the lifting slide 503 through the vertical guidance of the second linear bearing 502. This causes the positioning sleeve 508 at the bottom of the lifting positioning plate 504 to fit onto the outer cylindrical surface of the valve port. Utilizing the structural characteristics of the positioning sleeve 508 and the inflation gun 7 being coaxially arranged, the axial alignment and docking height positioning of the inflation end and the valve port are completed. After positioning is completed... The inflation component 5 at the bottom of the lifting and positioning plate 504 initiates the docking process. The inflation and pressing cylinder 9 drives the inflation connecting plate 10 to move vertically forward. The inflation positioning block 8 on the surface of the inflation connecting plate 10 first contacts the valve port end face to complete the end guidance correction and offset the slight deviation in circumferential positioning. Then, the sealing surface at the end of the inflation gun 7 tightly presses against the valve port to form a sealed inflation channel. Then, the test gas at the set pressure is injected into the cylinder. After the inflation pressure reaches the standard and the pressure holding verification is completed, the inflation gun 7 cuts off the gas path. The inflation and pressing cylinder 9, the inflation positioning cylinder 501, and the lifting cylinder 507 retract and reset in sequence. The clamping cylinder 404 drives the auxiliary wheel 401 to retract and release the clamp. The cylinder that has been inflated is sent out of the station by the conveyor line, and the entire inflation process is completed.

[0036] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic filling and detection device for liquefied petroleum gas cylinders, characterized in that: It includes fuselage components (1), center positioning components (3), and frame components (6); The central positioning component (3) is fixedly connected to one end of the body component (1). The central positioning component (3) includes a lifting cylinder (507) fixedly connected to one end of the body component (1). A lifting slide plate (503) is fixedly connected to the end of the lifting cylinder (507). An inflation positioning cylinder (501) is fixedly connected to the top of the lifting slide plate (503). A lifting positioning plate (504) is fixedly connected to the end of the inflation positioning cylinder (501). A laser sensor (505) is fixedly connected to one end of the bottom of the lifting positioning plate (504). An inflation component (5) is fixedly connected to the bottom of the lifting positioning plate (504). The inflation component (5) includes an inflation and pressing cylinder (9) fixedly connected to the other end of the bottom of the lifting positioning plate (504). An inflation connecting plate (10) is fixedly connected to the end of the inflation and pressing cylinder (9). An inflation positioning block (8) is fixedly connected to the surface of the inflation connecting plate (10). An inflation gun (7) is fixedly connected to the inside of the inflation connecting plate (10). The body component (1) is equipped with a servo indexing component (2). The servo indexing component (2) includes a mounting plate (205) fixedly connected to the inside of the body component (1). A servo motor (203) is fixedly connected to one end of the mounting plate (205). A drive wheel (202) is movably mounted on the other end of the mounting plate (205). A transmission belt (204) is movably mounted on the output end of the drive wheel (202) and the servo motor (203). A driven wheel (201) is movably mounted on the other end of the surface of the mounting plate (205). The bottom of the fuselage component (1) is fixedly connected to the frame component (6), and the top of the frame component (6) is fixedly connected to the clamping component (4). The clamping component (4) includes a clamping base (405) fixedly connected to the top of the frame component (6). One end of the clamping base (405) is fixedly connected to a clamping cylinder (404), and the end of the clamping cylinder (404) is fixedly connected to a clamping slide (402). One end of the clamping slide (402) is movably mounted with a secondary wheel (401).

2. The automatic filling and detection device for liquefied petroleum gas cylinders according to claim 1, characterized in that: The surface of the body component (1) is fixedly connected to a linear guide rail (506), and the linear guide rail (506) is provided in several sets. The lifting slide (503) is fitted with the linear guide rail (506).

3. The automatic filling and detection device for liquefied petroleum gas cylinders according to claim 1, characterized in that: A first linear bearing (403) is provided between the clamping slide (402) and the clamping base (405), and the clamping slide (402) slides horizontally along the clamping base (405) through the first linear bearing (403).

4. The automatic filling and detection device for liquefied petroleum gas cylinders according to claim 1, characterized in that: A second linear bearing (502) is provided between the lifting slide (503) and the lifting positioning plate (504), and the lifting positioning plate (504) is vertically slidably connected to the lifting slide (503) through the second linear bearing (502).

5. The automatic filling and detection device for liquefied petroleum gas cylinders according to claim 1, characterized in that: The top of the wheel surfaces of the driving wheel (202) and the driven wheel (201) protrude from the upper surface of the fuselage component (1), and the axes of the driving wheel (202) and the driven wheel (201) are parallel to each other and are both arranged horizontally.

6. The automatic filling and detection device for liquefied petroleum gas cylinders according to claim 1, characterized in that: The bottom of the lifting positioning plate (504) is fixedly connected to a positioning sleeve (508), and the axis of the positioning sleeve (508) coincides with the axis of the air gun (7).

7. The automatic filling and detection device for liquefied petroleum gas cylinders according to claim 1, characterized in that: The axis of the auxiliary wheel (401) is arranged vertically, and there are two sets of auxiliary wheels (401).

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