CN113447216B - Blow-molded bottle air tightness detection equipment and detection method thereof - Google Patents
Blow-molded bottle air tightness detection equipment and detection method thereof Download PDFInfo
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- CN113447216B CN113447216B CN202110717588.2A CN202110717588A CN113447216B CN 113447216 B CN113447216 B CN 113447216B CN 202110717588 A CN202110717588 A CN 202110717588A CN 113447216 B CN113447216 B CN 113447216B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3209—Details, e.g. container closure devices
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- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of blow molding bottle production, and aims to solve the problems that manual air blowing is needed to be carried out in a blow molding bottle and the pressure intensity in the blow molding bottle is needed to be detected when the air tightness of the blow molding bottle is detected at present, time and labor are wasted, the detection efficiency is low, the sealing effect on the bottle mouth of the blow molding bottle is difficult to ensure, and the air tightness detection result is not accurate enough; according to the invention, the blow-molded bottle is conveyed by the conveying belt, the anti-toppling mechanism can effectively prevent the blow-molded bottle from toppling in the conveying process, can automatically detect the air tightness, does not need to manually perform air blowing and air pressure detection, can obviously improve the sealing effect on the bottle mouth, and has a more accurate detection result.
Description
Technical Field
The invention relates to the technical field of blow-molded bottle production, in particular to a blow-molded bottle air tightness detection device and a blow-molded bottle air tightness detection method.
Background
Blow molding, also known as blow molding, is widely used with the birth of high density polyethylene and the development of blow molding machines, and the blow molding technology, the volume of hollow containers can reach thousands of liters, some production has adopted computer control, the plastics suitable for blow molding are polyethylene, polyvinyl chloride, polypropylene, polyester, etc., the obtained hollow containers are widely used as industrial packaging containers, blow molding can be divided into extrusion blow molding and injection blow molding according to the parison making method, newly developed are multilayer blow molding and stretch blow molding, extrusion blow molding is a method for making hollow thermoplastic articles, widely known blow molding objects are bottles, barrels, cans, boxes and all containers for packaging food, beverage, cosmetics, medicine and daily necessities;
blow molding bottles are processed through a blow molding process, air tightness detection needs to be carried out on the blow molding bottles after production is finished, so that whether the quality of the blow molding bottles is qualified or not is judged, at present, when the air tightness detection is carried out on the blow molding bottles, the bottle mouths of blow molding products generally need to be sealed manually, air blowing and air pressure detection are carried out on the blow molding bottles manually, the operation is complex, time and labor are wasted, and the detection effect and the detection efficiency are required to be improved;
to this end, we propose a device and a method for detecting the air tightness of a blow-molded bottle.
Disclosure of Invention
The invention aims to provide a device and a method for detecting the air tightness of a blow-molded bottle, wherein the blow-molded bottle is conveyed through a conveying belt, an anti-toppling mechanism can effectively prevent the blow-molded bottle from toppling in the conveying process, the continuous air tightness detection of the blow-molded bottle is facilitated, the detection efficiency is obviously improved, a bottle opening is preliminarily sealed through a pressing plate and an annular groove, the hollow expansion ring is expanded and tightly presses the inner wall of the bottle opening to perform secondary sealing on the bottle opening, the sealing effect of the bottle opening is obviously improved, the detection result is more accurate, the air tightness detection can be automatically performed, the operation is simple, time and labor are saved, and the problems that manual air blowing into the blow-molded bottle and the internal pressure of the blow-molded bottle are required to detect when the air tightness of the blow-molded bottle is detected at present, time and labor are wasted, the detection efficiency is low, the sealing effect of the blow-molded bottle is difficult to ensure, and the air tightness detection result is not accurate enough are solved.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a be used for blowing bottle gas tightness check out test set, includes gas tightness detection mechanism, riser, horizontal plate, mounting panel, supporting leg, conveyer belt, drive roll, driven voller and driving motor, the mounting panel includes preceding, back two sets, there is the supporting leg bottom of mounting panel through bolt fixed mounting, drive roll and driven voller rotate through the pivot and set up in the both sides of mounting panel, the drive roll is connected to the conveyer belt, driving motor passes through motor cabinet fixed mounting on one of them group mounting panel, driving motor's output is connected with the drive roll, riser fixed mounting is on one of them group mounting panel, be provided with the horizontal plate on the riser, gas tightness detection mechanism installs the bottom at the horizontal plate, install multiunit anti-toppling mechanism on the conveyer belt, anti-toppling mechanism equidistance sets up, fixed the loading board that is provided with between two sets of mounting panels; an infrared sensor is fixedly mounted on one group of mounting plates through bolts and is positioned below the air tightness detection mechanism;
the air tightness detection mechanism comprises a lifting air cylinder, a pressure plate, an annular groove, a hollow expansion ring, a fixed column, a first sealing disc, a second sealing disc, a cavity, a connecting cavity, a wear-resistant sealing ring, an electric push rod, a connecting pipe, an air delivery port, an air blowing pipe, an exhaust pipe, a connecting rod and an air pressure sensor; the lifting cylinder is fixedly arranged at the bottom of the horizontal plate, the pressing plate is horizontally arranged below the lifting cylinder, and the lifting cylinder acts on the pressing plate; the bottom of the pressing plate is provided with an annular groove, the mouth of the blow-molded bottle is inserted into the annular groove, and the hollow expansion ring is arranged in the annular groove and inserted into the mouth of the blow-molded bottle; the fixed column is fixedly arranged at the bottom of the pressing plate, and a cavity is formed in the fixed column; the fixing column is provided with a connecting pipe for communicating the hollow expansion ring and the cavity, and the fixing column is provided with an air transmission port communicated with the cavity; the first sealing disc and the second sealing disc are arranged in the cavity in a sliding mode, the first sealing disc is located above the second sealing disc, the connecting rod is fixedly connected with the first sealing disc and the second sealing disc, and the outer peripheral surfaces of the first sealing disc and the second sealing disc are provided with wear-resistant sealing rings; the top of the cavity is fixedly provided with an electric push rod, and the other end of the electric push rod is connected with the top of the first sealing disc; a connecting cavity is formed in the first sealing disc, an opening communicated with the connecting cavity is formed in the bottom of the first sealing disc, and an air pressure sensor is fixedly mounted at the top of the second sealing disc through a bolt; an air blowing pipe and an exhaust pipe which are communicated with the connecting cavity are arranged on the first sealing disc, the air blowing pipe and the exhaust pipe are hoses, and an electromagnetic valve is arranged on the exhaust pipe;
when the second sealing disc seals the gas transmission port, the communication position of the connecting pipe and the cavity is positioned between the first sealing disc and the second sealing disc; when the first sealing disc seals the connecting pipe and the communicating part of the cavity, the gas transmission port is positioned between the first sealing disc and the second sealing disc.
Further, the anti-toppling mechanism comprises a fixed box, a placing groove, a trapezoidal pressing block, a sliding rod, a second limiting block, a second spring and an anti-skid layer;
the bottom of the fixed box is connected with the conveying belt, a placing groove is formed in the fixed box, and the bottom of the blow-molded bottle is inserted into the placing groove; the trapezoidal pressing blocks are arranged in the placing groove in a plurality of groups and distributed in an annular array manner around the blow molded bottle, one surface of each trapezoidal pressing block, which faces the mouth of the blow molded bottle, is an inclined surface, and an anti-skid layer is arranged at the position, which is in contact with the blow molded bottle, on each trapezoidal pressing block; one side of trapezoidal briquetting blowing bottle dorsad has the multiunit slide bar through bolt fixed mounting, the other end of slide bar passes fixed box and is connected with the second stopper, the second spring sets up the outer wall at fixed box and is connected with the second stopper.
Furthermore, a thread groove is formed in the bottom of the fixing box, a stud is fixedly mounted on the surface of the conveying belt, and the stud is in threaded connection with the fixing box through the thread groove.
Furthermore, a booster pump is fixedly arranged on the vertical plate through a fixed seat, and an air outlet of the booster pump is connected with an air blowing pipe; there is control panel on the riser through bolt fixed mounting, infrared sensor and pneumatic sensor communication connection control panel respectively, control panel control driving motor, lift cylinder, electric putter and booster pump, the last solenoid valve of control panel control blast pipe.
Furthermore, two install the manipulator between the mounting panel, manipulator and driven voller are located the homonymy, and one side that is close to the driven voller places waste product box and non-defective products box, and waste product box and non-defective products box are located the below of manipulator.
Furthermore, a movable plate is arranged above the pressure plate, a plurality of groups of guide rods are fixedly mounted at the top of the pressure plate through bolts, and the guide rods upwards penetrate through the movable plate and are fixedly connected with a first limiting block; the guide rod is sleeved with a first spring, the first spring is connected with the movable plate and the pressing plate, and the bottom of the lifting cylinder is connected with the movable plate.
The invention also provides a detection method of the blow-molded bottle air tightness detection device, which comprises the following steps:
s1, fixing the blow molded bottle through an anti-toppling mechanism, and specifically operating as follows:
the blow molding bottle bottom is inserted into the placing groove, the blow molding bottle presses each trapezoidal pressure block downwards, the downward pressure pushes each trapezoidal pressure block to move outwards, the distance between the second limiting block and the fixed box is increased, the second spring is in a stretching state, and finally each trapezoidal pressure block abuts against the blow molding bottle bottom;
s2, starting a driving motor to enable a driving roller to rotate, conveying the blow-molded bottles by a conveying belt, sensing the blow-molded bottles by an infrared sensor when the blow-molded bottles enter the lower part of the air tightness detection mechanism, stopping the operation of the driving motor, and stopping the conveying of the conveying belt;
s3, starting the lifting cylinder to enable the pressing plate to descend until the pressing plate presses the mouth of the blow-molded bottle, inserting the mouth of the blow-molded bottle into the annular groove, and sealing the mouth of the blow-molded bottle by the annular groove;
s4, blowing gas into the connecting cavity through the gas blowing pipe, conveying the gas into the hollow expansion ring through the connecting pipe, expanding the hollow expansion ring and pressing the inner wall of the bottle mouth, and performing secondary sealing on the bottle mouth;
s5, starting an electric push rod and stopping blowing air, enabling the first sealing disc and the second sealing disc to descend by the electric push rod until the first sealing disc seals the communication position between the connecting pipe and the cavity, and enabling the air transmission port to be located between the first sealing disc and the second sealing disc;
s6, blowing and pressurizing the blowing pipe again, enabling the gas in the connecting cavity to enter the blow-molded bottle through the gas transmission port, stopping blowing after a certain time, and recording the pressure value at the moment; keeping the pressure for 7-10s, and recording the air pressure value again;
s7, the air pressure sensor sends the two sets of air pressure data to the control panel, a processor in the control panel analyzes the air pressure data, and when the difference between the two sets of air pressure values is smaller than a preset value, the air tightness of the blow-molded bottle meets the requirement, otherwise, the air tightness of the blow-molded bottle does not meet the requirement;
and S8, after the detection is finished, the exhaust pipe exhausts the gas in the hollow expansion ring and the blow molded bottle, the air tightness detection mechanism is separated from the blow molded bottle, and the conveying belt continues to convey the blow molded bottle to prepare for detection of the next blow molded bottle.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the blow molding bottle anti-toppling device, the blow molding bottle bottom is inserted into the placing groove through the anti-toppling mechanism, the second spring is in a stretching state, each trapezoidal pressing block abuts against the blow molding bottle bottom, the blow molding bottle is fixed, the blow molding bottle is conveyed through the conveying belt, the blow molding bottle is effectively prevented from toppling in the conveying process, the blow molding bottle is favorably and continuously subjected to air tightness detection, and the detection efficiency is obviously improved;
2. according to the invention, the bottle mouth is primarily sealed through the pressing plate and the annular groove, and the hollow expansion ring is expanded and tightly presses the inner wall of the bottle mouth, so that the bottle mouth is secondarily sealed, the sealing effect of the bottle mouth is obviously improved, the gas is prevented from leaking from the bottle mouth in the detection process, the detection error is increased, and the detection result is more accurate;
3. according to the invention, the pressing plate is lifted through the lifting air cylinder, the infrared sensor senses the blow-molded bottle, the air pressure is detected through the air pressure sensor, the air pressure data is analyzed and whether the air tightness of the blow-molded bottle meets requirements or not is judged, the air tightness detection can be automatically carried out, the operation is simple, time and labor are saved, and the air tightness detection effect and the detection efficiency are obviously improved.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings;
fig. 1 is a schematic overall structure diagram of an air tightness detection device for a blow-molded bottle according to the present invention.
Fig. 2 is a left side view of an airtightness detection apparatus for a blow-molded bottle according to the present invention.
Fig. 3 is a schematic structural diagram of an air-tightness detection mechanism in the air-tightness detection device for the blow-molded bottle according to the present invention.
Fig. 4 is an enlarged view of a portion a in fig. 3.
Fig. 5 is a schematic view (bottom view) illustrating the connection between the platen and the fixed column in the air tightness test of the blow molded bottle according to the present invention.
Fig. 6 is a schematic structural diagram of an anti-toppling mechanism in the air tightness detection device for the blow-molded bottle according to the present invention.
Fig. 7 is a top view of an anti-toppling mechanism for an airtight detection apparatus for a blow molded bottle according to the present invention.
Reference numerals are as follows: 1. an air tightness detection mechanism; 101. a lifting cylinder; 102. pressing a plate; 103. an annular groove; 104. a hollow expansion ring; 105. fixing a column; 106. a first sealing disk; 107. a second sealing disc; 108. a cavity; 109. a connecting cavity; 110. a wear-resistant seal ring; 111. an electric push rod; 112. a connecting pipe; 113. a gas transmission port; 114. blowing a gas pipe; 115. an exhaust pipe; 116. a movable plate; 117. a guide bar; 118. a first stopper; 119. a first spring; 120. a connecting rod; 121. an air pressure sensor; 2. a vertical plate; 3. a horizontal plate; 4. mounting a plate; 5. supporting legs; 6. a conveyor belt; 7. a drive roll; 8. a driven roller; 9. a carrier plate; 10. an anti-toppling mechanism; 1001. a fixing box; 1002. a placement groove; 1003. a trapezoidal briquetting; 1004. a slide bar; 1005. a second limiting block; 1006. a second spring; 1007. an anti-slip layer; 1008. a thread groove; 11. an infrared sensor; 12. a drive motor; 13. a stud; 14. a control panel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in figures 1-7, the invention provides an air tightness detection device for blow-molded bottles, which comprises an air tightness detection mechanism 1, a vertical plate 2, a horizontal plate 3, a mounting plate 4, support legs 5, a conveying belt 6, a driving roller 7, a driven roller 8 and a driving motor 12, wherein the mounting plate 4 comprises a front group and a rear group, the bottom of the mounting plate 4 is fixedly provided with the support legs 5 through bolts, the mounting plate 4 is supported by the support legs 5, the driving roller 7 and the driven roller 8 are rotatably arranged at two sides of the mounting plate 4 through rotating shafts, the conveying belt 6 is connected with the driving roller 7 and the driven roller 8, the conveying belt 6 conveys blow-molded bottles, the driving motor 12 is fixedly arranged on one group of the mounting plates 4 through a motor base, the output end of a driving motor 12 is connected with a driving roller 7, the driving motor 12 drives the driving roller 7, vertical plates 2 are fixedly installed on one group of installation plates 4, horizontal plates 3 are arranged on the vertical plates 2, an air tightness detection mechanism 1 is installed at the bottom of the horizontal plates 3, the air tightness detection mechanism 1 is used for detecting the air tightness of blow-molded bottles, a plurality of groups of anti-toppling mechanisms 10 are installed on a conveying belt 6, the anti-toppling mechanisms 10 are used for fixing the blow-molded bottles to prevent the blow-molded bottles from toppling in the conveying process, the anti-toppling mechanisms 10 are arranged at equal intervals, a bearing plate 9 is fixedly arranged between the two groups of installation plates 4, and when the air tightness detection is carried out, the bearing plate 9 supports the blow-molded bottles above, so that the detection process is stable; an infrared sensor 11 is fixedly installed on one group of the installation plates 4 through bolts, the infrared sensor 11 is located below the air tightness detection mechanism 1, the infrared sensor 11 senses a blow molding bottle entering below the air tightness detection mechanism 1, and the conveying belt 6 stops conveying when the blow molding bottle entering below the air tightness detection mechanism 1 is sensed;
the anti-toppling mechanism 10 comprises a fixed box 1001, a placing groove 1002, a trapezoidal pressing block 1003, a sliding rod 1004, a second limiting block 1005, a second spring 1006 and an anti-skid layer 1007; the bottom of the fixed box 1001 is connected with the conveyer belt 6, a placing groove 1002 is formed in the fixed box 1001, and the bottom of the blow molded bottle is inserted into the placing groove 1002; the trapezoidal pressing blocks 1003 are arranged in the placing groove 1002 in multiple groups and distributed in an annular array mode around the blow molding bottle, one face, facing the bottle opening of the blow molding bottle, of each trapezoidal pressing block 1003 is an inclined face, when the blow molding bottle presses each trapezoidal pressing block 1003 downwards, the trapezoidal pressing blocks 1003 are pushed to move outwards by downward pressure, an anti-slip layer 1007 is arranged on the position, contacting with the blow molding bottle, of each trapezoidal pressing block 1003, and the anti-slip layer 1007 can remarkably increase friction force between the anti-slip layer and the blow molding bottle and improve fixing effect; one side of the trapezoidal pressing block 1003, which faces away from the blow-molded bottle, is fixedly provided with a plurality of groups of sliding rods 1004 through bolts, the other ends of the sliding rods 1004 penetrate through the fixed box 1001 and are connected with a second limiting block 1005, a second spring 1006 is arranged on the outer wall of the fixed box 1001 and is connected with the second limiting block 1005, the bottom of the blow-molded bottle is inserted into the placing groove 1002 in the process, the distance between the second limiting block 1005 and the fixed box 1001 is increased, the second spring 1006 is in a stretching state, and finally, each trapezoidal pressing block 1003 abuts against the bottom of the blow-molded bottle, so that the blow-molded bottle is fixed, the blow-molded bottle is effectively prevented from being toppled in the conveying process, the continuous air tightness detection of the blow-molded bottle is facilitated, and the detection efficiency is remarkably improved; the bottom of the fixing box 1001 is provided with a thread groove 1008, the surface of the conveying belt 6 is fixedly provided with a stud 13, the stud 13 is in threaded connection with the fixing box 1001 through the thread groove 1008, and the stud 13 is connected with or separated from the fixing box 1001 by rotating the fixing box 1001, so that the fixing box 1001 is convenient to disassemble and assemble, and the fixing box 1001 is convenient to replace;
the air tightness detection mechanism 1 comprises a lifting cylinder 101, a pressure plate 102, an annular groove 103, a hollow expansion ring 104, a fixing column 105, a first sealing disc 106, a second sealing disc 107, a cavity 108, a connecting cavity 109, a wear-resistant sealing ring 110, an electric push rod 111, a connecting pipe 112, an air transmission port 113, an air blowing pipe 114, an exhaust pipe 115, a connecting rod 120 and an air pressure sensor 121; the lifting cylinder 101 is fixedly installed at the bottom of the horizontal plate 3, the pressing plate 102 is horizontally arranged below the lifting cylinder 101, the pressing plate 102 is lifted through the lifting cylinder 101, a movable plate 116 is arranged above the pressing plate 102, a plurality of groups of guide rods 117 are fixedly installed at the top of the pressing plate 102 through bolts, and the guide rods 117 upwards penetrate through the movable plate 116 and are fixedly connected with a first limiting block 118; a first spring 119 is sleeved on the guide rod 117, the first spring 119 is connected with the movable plate 116 and the pressure plate 102, the bottom of the lifting cylinder 101 is connected with the movable plate 116, and when detection is carried out, the first spring 119 is in a compressed state and applies downward pressure to the pressure plate 102 so that the pressure plate 102 presses the mouth of the blow-molded product;
the bottom of the pressing plate 102 is provided with an annular groove 103, the mouth of the blow-molded bottle is inserted into the annular groove 103, the hollow expansion ring 104 is arranged in the annular groove 103 and inserted into the mouth of the blow-molded bottle, the pressing plate 102 presses the mouth of the blow-molded bottle, the mouth of the blow-molded bottle is inserted into the annular groove 103, and the pressing plate 102 and the annular groove 103 preliminarily seal the mouth of the blow-molded bottle; the fixed column 105 is fixedly arranged at the bottom of the pressure plate 102, and a cavity 108 is formed in the fixed column 105; a connecting pipe 112 for communicating the hollow expansion ring 104 with the cavity 108 is installed on the fixed column 105, the connecting pipe 112 conveys gas into the hollow expansion ring 104, the hollow expansion ring 104 expands and tightly presses the inner wall of the bottle mouth to perform secondary sealing on the bottle mouth, so that the sealing effect on the bottle mouth is obviously improved, the gas leakage from the bottle mouth in the detection process is prevented, the detection error is increased, the detection result is more accurate, an air conveying port 113 communicated with the cavity 108 is formed in the fixed column 105, and the gas is conveyed into the blow-molded bottle through the air conveying port 113; the first sealing disc 106 and the second sealing disc 107 are slidably arranged in the cavity 108, the first sealing disc 106 is positioned above the second sealing disc 107, the connecting rod 120 is fixedly connected with the first sealing disc 106 and the second sealing disc 107, the outer peripheral surface of the first sealing disc 106 and the outer peripheral surface of the second sealing disc 107 are both provided with wear-resistant sealing rings 110, and the wear-resistant sealing rings 110 are beneficial to improving the sealing effect and are not easy to wear; an electric push rod 111 is fixedly mounted at the top of the cavity 108, the other end of the electric push rod 111 is connected with the top of the first sealing disc 106, and the electric push rod 111 enables the first sealing disc 106 to lift; a connecting cavity 109 is formed in the first sealing disc 106, an opening communicated with the connecting cavity 109 is formed in the bottom of the first sealing disc 106, an air pressure sensor 121 is fixedly mounted at the top of the second sealing disc 107 through a bolt, and the air pressure sensor 121 detects internal air pressure; an air blowing pipe 114 and an air exhaust pipe 115 which are communicated with the connecting cavity 109 are installed on the first sealing disc 106, the air blowing pipe 114 is used for air blowing and pressurization, the air exhaust pipe 115 is used for exhausting gas, the air blowing pipe 114 and the air exhaust pipe 115 are hoses, and an electromagnetic valve is arranged on the air exhaust pipe 115 and used for controlling gas output on the air exhaust pipe 115; when the second sealing disc 107 seals the gas transfer port 113, the connection between the connecting tube 112 and the cavity 108 is between the first sealing disc 106 and the second sealing disc 107; the gas transfer port 113 is located between the first sealing disk 106 and the second sealing disk 107 when the first sealing disk 106 seals the connection of the connecting tube 112 to the cavity 108.
A booster pump is fixedly arranged on the vertical plate 2 through a fixed seat, the gas outlet of the booster pump is connected with the gas blowing pipe 114, and the booster pump blows gas into the gas blowing pipe 114; a control panel 14 is fixedly installed on the vertical plate 2 through bolts, the control panel 14 is used for processing and analyzing data and sending out a control instruction, the infrared sensor 11 and the air pressure sensor 121 are respectively in communication connection with the control panel 14, the infrared sensor 11 and the air pressure sensor 121 send detected information to the control panel 14, the control panel 14 controls the driving motor 12, the lifting cylinder 101, the electric push rod 111 and the booster pump, the control panel 14 controls an electromagnetic valve on the exhaust pipe 115, and the control panel 14 controls the operation of each component; install the manipulator between two mounting panels 4, the manipulator is located the homonymy with driven voller 8, detect and accomplish the back, this blowing bottle through detecting is lived to the manipulator centre gripping, waste product box and non-defective products box are placed to one side that is close to driven voller 8, waste product box and non-defective products box are located the below of manipulator, waste product box is used for placing the unqualified blowing bottle of gas tightness detection, the non-defective products box is used for placing the qualified blowing bottle of gas tightness detection, according to gas tightness testing result, the manipulator carries the blowing bottle to waste product box or non-defective products box.
The working principle of the invention is as follows:
when the blow molding bottle is used, the bottom of the blow molding bottle is inserted into the placing groove 1002, the blow molding bottle presses each trapezoidal pressing block 1003 downwards, the downward pressure pushes each trapezoidal pressing block 1003 to move outwards, the distance between the second limiting block 1005 and the fixing box 1001 is increased, the second spring 1006 is in a stretching state, and finally each trapezoidal pressing block 1003 abuts against the bottom of the blow molding bottle, so that the blow molding bottle is fixed, the blow molding bottle is effectively prevented from being toppled in the conveying process, and the continuous air tightness detection of the blow molding bottle is facilitated;
starting a driving motor 12 to enable a driving roller 7 to rotate, conveying blown bottles by a conveying belt 6, sensing the blown bottles by an infrared sensor 11 when the blown bottles enter the lower part of the air tightness detection mechanism 1, stopping the operation of the driving motor 12, and stopping the conveying of the conveying belt 6; at the moment, the lifting cylinder 101 is started to enable the pressing plate 102 to descend until the pressing plate 102 presses the mouth of the blow-molded bottle, the mouth of the blow-molded bottle is inserted into the annular groove 103, and the pressing plate 102 and the annular groove 103 perform primary sealing on the mouth of the blow-molded bottle; the air blowing pipe 114 blows air into the connecting cavity 109, the connecting pipe 112 conveys the air into the hollow expansion ring 104, the hollow expansion ring 104 expands and presses the inner wall of the bottle mouth (when the hollow expansion ring 104 begins to expand, the internal air pressure basically keeps unchanged due to the continuous increase of the internal space, when the hollow expansion ring 104 presses the inner wall of the bottle mouth, the internal space does not increase any more, the air pressure is continuously increased due to the continuous input of the air at the moment, the internal air pressure is detected according to the air pressure sensor 121, whether the hollow expansion ring 104 presses the inner wall of the bottle mouth or not is judged according to the change of the internal air pressure value, the next operation is automatically carried out according to the judgment result), the secondary sealing is carried out on the bottle mouth, the sealing effect on the bottle mouth is obviously improved, the detection error is prevented from being increased due to the leakage of the air from the bottle mouth in the detection process, and the detection result is more accurate;
starting an electric push rod 111 and stopping blowing air, wherein the electric push rod 111 lowers the first sealing plate 106 and the second sealing plate 107 until the first sealing plate 106 seals the communication position of the connecting pipe 112 and the cavity 108, and the air transmission port 113 is positioned between the first sealing plate 106 and the second sealing plate 107; the air blowing pipe 114 performs air blowing pressurization again, the air in the connecting cavity 109 enters the blow-molded bottle through the air conveying port 113, the air blowing is stopped after a certain time, the air pressure value at the moment is recorded, and the air pressure value is recorded again after the pressure is maintained for 7-10 s; the air pressure sensor 121 sends the two sets of air pressure data to the control panel 14, a processor in the control panel 14 analyzes the air pressure data, when the difference between the two sets of air pressure values is smaller than a preset value, the air tightness of the blow-molded bottle meets the requirement, otherwise, the air tightness of the blow-molded bottle does not meet the requirement; after the detection is finished, the air in the hollow expansion ring 104 and the blow-molded bottle is exhausted through the exhaust pipe 115, the air tightness detection mechanism 1 is lifted by the lifting cylinder 101 and separated from the blow-molded bottle, the conveying belt 6 is continuously conveyed to prepare for the detection of the next blow-molded bottle, the air tightness detection of the blow-molded bottle can be continuously carried out, and the detection efficiency is obviously improved.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (3)
1. The utility model provides an air tightness detection equipment for blowing bottle, includes air tightness detection mechanism (1), riser (2), horizontal plate (3), mounting panel (4), supporting leg (5), conveyer belt (6), drive roll (7), driven voller (8) and driving motor (12), mounting panel (4) are two sets of including preceding, back, there are supporting leg (5) bottom of mounting panel (4) through bolt fixed mounting, drive roll (7) and driven voller (8) rotate the both sides that set up at mounting panel (4) through the pivot, drive roll (7) and driven voller (8) are connected in conveyer belt (6), driving motor (12) are through motor cabinet fixed mounting on one of them a set of mounting panel (4), the output and the drive roll (7) of driving motor (12) are connected, riser (2) fixed mounting is on one of them a set of mounting panel (4), be provided with horizontal plate (3) on riser (2), air tightness detection mechanism (1) is installed in the bottom of horizontal plate (3), its characterized in that the multiunit prevents toppling over mechanism (10) is installed to conveyer belt (6), prevent that toppling over a set up between a set of mounting panel (10) and install the equidistance through infrared sensor (11) fixed mounting panel (4) wherein the infrared sensor (11) is installed to be provided with mounting panel (11) ) The infrared sensor (11) is positioned below the air tightness detection mechanism (1);
the air tightness detection mechanism (1) comprises a lifting cylinder (101), a pressure plate (102), an annular groove (103), a hollow expansion ring (104), a fixing column (105), a first sealing disc (106), a second sealing disc (107), a cavity (108), a connecting cavity (109), a wear-resistant sealing ring (110), an electric push rod (111), a connecting pipe (112), an air conveying port (113), an air blowing pipe (114), an air exhaust pipe (115), a connecting rod (120) and an air pressure sensor (121); the lifting air cylinder (101) is fixedly installed at the bottom of the horizontal plate (3), the pressure plate (102) is horizontally arranged below the lifting air cylinder (101), the lifting air cylinder (101) acts on the pressure plate (102), the bottom of the pressure plate (102) is provided with an annular groove (103), the mouth of a blow-molded bottle is inserted into the annular groove (103), the hollow expansion ring (104) is arranged in the annular groove (103) and inserted into the mouth of the blow-molded bottle, the fixing column (105) is fixedly installed at the bottom of the pressure plate (102), a cavity (108) is formed in the fixing column (105), a connecting pipe (112) for communicating the hollow expansion ring (104) with the cavity (108) is installed on the fixing column (105), an air conveying opening (113) communicated with the cavity (108) is formed in the fixing column (105), the first sealing disc (106) and the second sealing disc (107) are arranged in the cavity (108) in a sliding mode, the first sealing disc (106) is located above the second sealing disc (107), the connecting rod (120) is fixedly connected with the first sealing disc (106) and the second sealing disc (107), the wear-resistant sealing disc (106) and the wear-resistant sealing disc (107) are arranged on the outer peripheral surface of the first sealing disc (106), and the outer peripheral surface (107), and the top of the second sealing disc (108) are provided with an electric push rod (111), the other end of the electric push rod (111) is connected with the top of the first sealing disc (106), a connecting cavity (109) is formed in the first sealing disc (106), an opening communicated with the connecting cavity (109) is formed in the bottom of the first sealing disc (106), an air pressure sensor (121) is fixedly mounted at the top of the second sealing disc (107) through a bolt, an air blowing pipe (114) and an exhaust pipe (115) communicated with the connecting cavity (109) are mounted on the first sealing disc (106), the air blowing pipe (114) and the exhaust pipe (115) are hoses, and an electromagnetic valve is arranged on the exhaust pipe (115);
when the second sealing disc (107) seals the gas transmission port (113), the communication position of the connecting pipe (112) and the cavity (108) is positioned between the first sealing disc (106) and the second sealing disc (107), and when the first sealing disc (106) seals the communication position of the connecting pipe (112) and the cavity (108), the gas transmission port (113) is positioned between the first sealing disc (106) and the second sealing disc (107);
the anti-toppling mechanism (10) comprises a fixed box (1001), a placing groove (1002), a trapezoidal pressing block (1003), a sliding rod (1004), a second limiting block (1005), a second spring (1006) and an anti-skidding layer (1007);
the bottom of the fixed box (1001) is connected with the conveying belt (6), a placing groove (1002) is formed in the fixed box (1001), the bottom of a blow-molded bottle is inserted into the placing groove (1002), a plurality of groups of trapezoid pressing blocks (1003) are arranged in the placing groove (1002) and distributed in an annular array mode around the blow-molded bottle, one face, facing the mouth of the blow-molded bottle, of each trapezoid pressing block (1003) is an inclined face, an anti-slip layer (1007) is arranged on the position, contacting with the blow-molded bottle, of each trapezoid pressing block (1003), one side, facing away from the blow-molded bottle, of each trapezoid pressing block (1003) is fixedly provided with a plurality of groups of sliding rods (1004) through bolts, the other ends of the sliding rods (1004) penetrate through the fixed box (1001) and are connected with a second limiting block (1005), and a second spring (1006) is arranged on the outer wall of the fixed box (1001) and connected with the second limiting block (1005);
the vertical plate (2) is fixedly provided with a booster pump through a fixing seat, an air outlet of the booster pump is connected with an air blowing pipe (114), the vertical plate (2) is fixedly provided with a control panel (14) through bolts, the infrared sensor (11) and the air pressure sensor (121) are respectively in communication connection with the control panel (14), the control panel (14) controls the driving motor (12), the lifting cylinder (101), the electric push rod (111) and the booster pump, and the control panel (14) controls an electromagnetic valve on the exhaust pipe (115);
a manipulator is arranged between the two mounting plates (4), the manipulator and the driven roller (8) are positioned on the same side, a waste box and a good box are placed on one side close to the driven roller (8), and the waste box and the good box are positioned below the manipulator;
the lifting air cylinder is characterized in that a movable plate (116) is arranged above the pressing plate (102), a plurality of groups of guide rods (117) are fixedly mounted at the top of the pressing plate (102) through bolts, the guide rods (117) upwards penetrate through the movable plate (116) and are fixedly connected with first limiting blocks (118), first springs (119) are sleeved on the guide rods (117), the movable plate (116) and the pressing plate (102) are connected through the first springs (119), and the bottom of the lifting air cylinder (101) is connected with the movable plate (116).
2. The airtightness detection apparatus for blow molded bottles according to claim 1, wherein a threaded groove (1008) is formed in a bottom of the fixing box (1001), a stud (13) is fixedly mounted on a surface of the conveyor belt (6), and the stud (13) is in threaded connection with the fixing box (1001) through the threaded groove (1008).
3. A method for detecting the airtightness of a blow-molded bottle using the airtightness detecting apparatus according to claim 1, characterized by comprising the steps of:
s1, fixing a blow-molded bottle through an anti-toppling mechanism (10), and specifically operating as follows:
the bottom of the blow molding bottle is inserted into the placing groove (1002), the blow molding bottle presses each trapezoidal pressing block (1003) downwards, the downward pressure pushes each trapezoidal pressing block (1003) to move outwards, the distance between the second limiting block (1005) and the fixed box (1001) is increased, the second spring (1006) is in a stretching state, and finally each trapezoidal pressing block (1003) abuts against the bottom of the blow molding bottle;
s2, starting a driving motor (12) to enable a driving roller (7) to rotate, conveying a blow-molded bottle by a conveying belt (6), sensing the blow-molded bottle by an infrared sensor (11) when the blow-molded bottle enters the lower part of the air tightness detection mechanism (1), stopping the operation of the driving motor (12), and stopping the conveying of the conveying belt (6);
s3, starting the lifting cylinder (101) to enable the pressing plate (102) to descend until the pressing plate (102) presses the mouth of the blow-molded bottle, inserting the mouth of the blow-molded bottle into the annular groove (103), and sealing the mouth of the blow-molded bottle by the annular groove (103);
s4, blowing gas into the connecting cavity (109) by using a gas blowing pipe (114), conveying the gas into the hollow expansion ring (104) by using the connecting pipe (112), expanding the hollow expansion ring (104) and pressing the inner wall of the bottle mouth to perform secondary sealing on the bottle mouth;
s5, starting the electric push rod (111) and stopping blowing air, enabling the first sealing disc (106) and the second sealing disc (107) to descend by the electric push rod (111) until the first sealing disc (106) seals the communication position of the connecting pipe (112) and the cavity (108), and enabling the air transfer port (113) to be located between the first sealing disc (106) and the second sealing disc (107);
s6, blowing and pressurizing the air blowing pipe (114) again, enabling the air in the connecting cavity (109) to enter a blow-molded bottle through an air conveying port (113), stopping blowing after a certain time, and recording the air pressure value at the moment; keeping the pressure for 7-10s, and recording the air pressure value again;
s7, the air pressure sensor (121) sends the two sets of air pressure data to the control panel (14), a processor in the control panel (14) analyzes the air pressure data, and when the difference between the two sets of air pressure values is smaller than a preset value, the air tightness of the blow-molded bottle meets the requirement, otherwise, the air tightness of the blow-molded bottle does not meet the requirement;
and S8, after the detection is finished, the air in the hollow expansion ring (104) and the blow-molded bottle is exhausted by the exhaust pipe (115), the air tightness detection mechanism (1) is separated from the blow-molded bottle, and the conveying belt (6) continues to convey the blow-molded bottle to prepare for the detection of the next blow-molded bottle.
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| CN114166440A (en) * | 2021-11-30 | 2022-03-11 | 安徽东盛友邦制药有限公司 | Oral liquid bottle is with sealed detection mechanism and based on examining test table of this mechanism |
| CN114486082B (en) * | 2021-12-29 | 2024-03-15 | 西峡县内燃机进排气管有限责任公司 | Air tightness detection device of turbocharger shell |
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