CN115308127B - Plastic bottle bottleneck defect detecting equipment - Google Patents
Plastic bottle bottleneck defect detecting equipment Download PDFInfo
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- CN115308127B CN115308127B CN202211235942.9A CN202211235942A CN115308127B CN 115308127 B CN115308127 B CN 115308127B CN 202211235942 A CN202211235942 A CN 202211235942A CN 115308127 B CN115308127 B CN 115308127B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/08—Detecting presence of flaws or irregularities
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Abstract
The invention relates to the field of bottle blank manufacturing and production, in particular to a plastic bottle opening defect detection device which comprises a placing table, wherein a positioning assembly is arranged on the placing table, a cover screwing detection assembly is arranged right above the positioning assembly and is installed on a frame main body, the frame main body comprises a circular ring, a lower circular disc and an upper circular disc which are sequentially arranged from bottom to top, the circular ring, the lower circular disc and the upper circular disc are fixed through a connecting frame, a lifting driver is arranged on the placing table, a cover screwing driver is arranged on the lifting driver, the cover screwing detection assembly comprises a first clamp, a torque detection mechanism and a contact induction mechanism, and a clamping driving mechanism is arranged between the upper circular disc and the lower circular disc.
Description
Technical Field
The invention relates to the field of bottle blank manufacturing and production, in particular to a bottle opening defect detection device for a plastic bottle.
Background
At present, the domestic bottle blank manufacturing industry carries out the following process treatment on the injection molded bottle blank: blank arrangement, conveying, storage and bottle blowing are carried out by visually detecting injection-molded bottle blanks and rejecting unqualified bottle blanks, after the bottle blanks are arranged in the conventional bottle blowing factory, two groups of very long belts are required to be used for clamping a cylindrical surface below a bottle blank support ring for conveying and poor crystallization detection, special cameras are arranged above the belts and at two sides for carrying out blank mouth photographing detection on the moving bottle blanks, however, when the bottle blanks are detected in the conveying process, photographing detection can be carried out on the bottle blanks from one angle, and in the production process of the bottle blanks, excessive plastics are generated in the injection-blow molding process, redundant protruding parts are generated at the bottle mouths of the bottle blanks, so that products are unqualified, but the defects at the bottle mouths of the bottle blanks cannot be accurately observed through photographing detection, and the detection effect is poor.
The chinese patent CN201910237231.7 that discloses at present moulds plastics bottle embryo multi-angle check out test set, including the support and set up in the bottle embryo feed arrangement of support one side still includes: the bottle preform feeding device comprises a feeding part, a feeding part and a distribution component, wherein the feeding part is positioned on one side of the bottle preform feeding device, the distribution component is rotatably arranged between the feeding part and the feeding part, and when the bottle preform feeding device works, bottle preforms conveyed into the feeding part from the bottle preform feeding device enter the feeding part under the distribution driving of the distribution component and are distributed at intervals; the feeding device is arranged on the bracket and is positioned below the feeding part; the angle rotating device is rotationally arranged on the bracket and positioned above the feeding part, and comprises a rotating driving part, a rotating part rotationally arranged at one end of the rotating driving part, a plurality of bottle blank supporting components positioned on the circumferential surface of the rotating part and an angle rotating driving part arranged at one end of the rotating part; the photographing detection device is arranged on the support and comprises a first photographing detection component and a second photographing detection component, the first photographing detection component and the second photographing detection component are both positioned on the circumferential surface of the angle rotation device, the first photographing detection component is positioned in the horizontal direction of the support, the second photographing detection component is positioned in the vertical direction of the support, and the first photographing detection component and the second photographing detection component are arranged in an included angle; and the blanking device is arranged in the rotation direction of the angle rotation device and is arranged opposite to the second photographing detection component, and the bottle blank subjected to photographing detection after the rotation of the angle rotation device falls into the blanking device and is output outwards.
According to above-mentioned patent, this patent is surveyed the bottle embryo through adjusting the angle of shooing, nevertheless can't accurately observe out the slight defect of bottleneck department through the mode of shooing, and detection effect is not good, consequently, needs a mode through the selective examination at present, and whether qualified check out test set of bottleneck that detects the plastic bottle with the mode of twisting the bottle lid and surveying the moment of torsion.
Disclosure of Invention
To the problem that prior art exists, provide a plastic bottle bottleneck defect detecting equipment, this application detects out the condition that spiral cover in-process torsion changes through the in-process that spiral cover determine module twisted the bottle lid on the plastic bottle to and twist the detection of targetting in place through the bottle lid, judge whether can be normal complete the bottle lid twist on the plastic bottle, improved the detection precision.
In order to solve the problems of the prior art, the invention adopts the technical scheme that:
the invention provides a plastic bottle mouth defect detection device which comprises a placing table, wherein a positioning assembly used for fixing a plastic bottle is arranged on the placing table, and a cap screwing detection assembly used for detecting whether the bottle mouth of the plastic bottle has defects or not in a bottle cap screwing mode is arranged right above the positioning assembly; the spiral cover detection assembly is arranged on a frame main body, the frame main body comprises a circular ring, a lower disc and an upper disc which are sequentially arranged from bottom to top, and the circular ring, the lower disc and the upper disc are fixed through a connecting frame; the placing table is provided with a lifting driver for driving the frame main body to vertically move; the lifting driver is provided with a cover screwing driver for driving the frame main body to rotate; the screw cap detection assembly comprises a first clamp, a torque detection mechanism and a contact sensing mechanism; the number of the first clamps is three, and the three first clamps are all arranged on the circular ring and are uniformly distributed along the circumferential direction of the circular ring; the torque detection mechanism is arranged between the circular ring and the lower disc and is connected with the three first clamps in a matching manner; the contact induction mechanism is arranged on the positioning assembly, and when the circular ring is in contact with the contact induction mechanism, the bottle cap is in a state of being completely screwed on the plastic bottle; a clamping driving mechanism for driving the three first clamps to clamp the bottle cap is arranged between the upper disc and the lower disc.
Preferably, the first clamp comprises a first arc-shaped clamping plate; first arc splint set up the inboard at the ring, the centre of a circle between first arc splint and the ring, be equipped with the first guide bar that passes the ring and outwards extend along the orbit direction in the centre of a circle on the first arc splint, set up the direction mouth that supplies first guide bar to pass on the ring, inboard intermediate position department between per two adjacent first arc splint all is equipped with a second arc splint, slide joint between every second arc splint and two first arc splint that correspond, be equipped with the second guide bar that passes the ring and outwards extend along the orbit direction in the centre of a circle on the second arc splint, set up the direction mouth that supplies the second guide bar to pass on the ring, all be equipped with the pressure bolster of being connected with the tight actuating mechanism of clamp on every first guide bar.
Preferably, the torque detection mechanism comprises a sliding clamping plate, a rotating disc, a rotating column and a torque sensor; the number of the sliding clamp plates is three, and the three sliding clamp plates are respectively clamped at the center of the inner side of a first arc clamp plate in a sliding manner; the rotating disc is coaxially arranged on the surface of the circular ring facing the lower circular disc, the rotating disc is connected with the circular ring through a first bearing, a strip-shaped opening extending towards the circle center is formed in the position, corresponding to each sliding clamping plate, of the rotating disc, and a convex strip extending upwards through the corresponding strip-shaped opening is formed in each sliding clamping plate; the rotating column is coaxially arranged between the rotating disc and the lower disc, the lower end of the rotating column is fixedly connected with the rotating disc, and the upper end of the rotating column is connected with the rotating disc through a second bearing; the torque sensor is fixedly arranged between the upper disc and the lower disc, and an output shaft of the torque sensor is coaxially and fixedly connected with the rotating column.
Preferably, the contact sensing mechanism comprises a first touch switch and a touch rod; the two first touch switches are symmetrically arranged on the positioning assembly; the touch and press rod has two, and two touch and press the pole symmetry to set up in the both sides of ring and be located respectively just to the position department of a first touch and press switch, and every touches the one end surface of depression bar all with the lower surface parallel and level of ring, when the touch and press rod triggers first touch and press switch completely, the lower surface of bottle lid is in the state with the bottleneck step surface parallel and level of plastic bottle.
Preferably, the rotating column is sleeved with a torsion spring, and two ends of the torsion spring are respectively and fixedly connected to the surface of the rotating disc and the surface of the lower disc.
Preferably, the pressure buffer comprises a sleeve, a second touch switch and a buffer spring; the sleeve is sleeved on the first guide rod; the second touch switch is arranged at the end part of the sleeve, and the output end of the second touch switch is positioned in the sleeve; buffer spring sets up in telescopic inside and is located between first guide bar and the second touch switch, and buffer spring's both ends respectively with the tip of first guide bar and telescopic tip fixed connection.
Preferably, the clamping driving mechanism comprises a rotating ring, a sliding rod and a fixed frame; the rotating ring is coaxially arranged between the upper disc and the lower disc, the torque sensor is positioned in the rotating ring, and the rotating ring is connected with the connecting frame through a third bearing; the three sliding rods are arranged between the upper disc and the lower disc, are uniformly distributed along the circumferential direction of the rotating ring and are respectively positioned at the position corresponding to one pressure buffer part, two ends of each sliding rod are respectively arranged on the upper disc and the lower disc in a sliding manner, strip-shaped openings for the end parts of the sliding rods to slide are formed in the upper disc and the lower disc, and the sliding direction of each sliding rod is respectively parallel to the axial direction of the corresponding sleeve; the three fixing frames are respectively arranged between one sleeve and one corresponding slide bar, two ends of each fixing frame are respectively fixedly connected with the corresponding sleeve and the lower end of the corresponding slide bar, a convex column is arranged at a position, close to each slide bar, on the rotating ring, a loop bar is arranged between each convex column and the corresponding slide bar, and two ends of each loop bar are respectively sleeved on the corresponding convex column and the corresponding slide bar; the connecting frame is provided with a rotary driver for driving the rotary ring to rotate, and the rotary ring is sleeved with a ferrule gear in transmission connection with the rotary driver.
Preferably, the center of the top of the connecting frame is coaxially provided with a lifting rod in transmission connection with the lifting driver, and the end part of the lifting rod is connected with the connecting frame through a fourth bearing.
Preferably, a driven gear in transmission connection with the cap screwing driver is fixedly arranged on the connecting frame, and the driven gear and the lifting rod share the same axis.
Preferably, the positioning assembly comprises a second clamp; the two second clamps are symmetrically arranged on the placing table, each first touch switch is respectively arranged on one second clamp, and the two second clamps can move on the placing table relatively; the placing table is provided with a linear driver for driving each second clamp to move, and when the two second clamps fix the plastic bottle by clamping the lower end part of the bottle mouth of the plastic bottle and the bottle cap is clamped by the three first clamps, the bottle mouth of the plastic bottle and the bottle cap are in a coaxial state.
This application compares in prior art's beneficial effect and is:
1. this application is twisted the in-process on the plastic bottle with the bottle lid through spiral cover determine module, detects out the condition that spiral cover in-process torsion changes to and twist the detection that targets in place through the bottle lid, judge whether the bottle lid can be normal complete twist on the plastic bottle, realized the detection to the bottleneck defect of plastic bottle, improved the detection precision.
2. This application orders about the removal of first arc splint through pressing from both sides tight actuating mechanism to the clamp of second arc splint to the bottle lid has been promoted, and under the setting of pressure bolster, makes second arc splint have the buffering effect to the clamp force of bottle lid, has realized the condition that the bottle lid clamping in-process disappearance warp, avoids the unable normal twisting of bottle lid on the plastic bottle, has guaranteed that the bottle lid can normally twist on the plastic bottle.
3. This application is connected through the transmission between column spinner and the torque sensor, when the column spinner takes place the torsional condition for torque sensor, torque sensor's output shaft can be along with the column spinner is together rotatory, thereby torque sensor passes through the rotation of output shaft, judges the torsion size, has realized the detection to the in-process torsion of bottle lid twisting on the plastic bottle, judges whether there is the defect in the bottleneck of plastic bottle, influences the normal twist of bottle lid, has improved the detection precision.
Drawings
FIG. 1 is a schematic perspective view of a bottle mouth defect detection device for a plastic bottle;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 isbase:Sub>A cross-sectional view of the three-dimensional structure of FIG. 3 at A-A;
FIG. 5 is a schematic perspective view of a frame body and a screw cap detection assembly of a bottle mouth defect detection device for plastic bottles;
FIG. 6 is a front view of FIG. 5;
FIG. 7 is a cross-sectional view of the three-dimensional structure of FIG. 6 at B-B;
FIG. 8 is a cross-sectional view of the perspective structure of FIG. 6 at C-C;
FIG. 9 is a cross-sectional view taken at D-D of FIG. 6;
fig. 10 is a schematic perspective view of a positioning assembly of a plastic bottle mouth defect detection device.
The reference numbers in the figures are:
1-placing a table;
2-a positioning assembly;
21-a second clamp;
22-a linear drive;
3-a frame body;
31-a circular ring;
32-lower disc;
33-upper disc;
34-a connecting frame;
4-a screw cap detection assembly;
41-a first clamp; 411-a first arc splint; 4111-a first guide rod; 412-a second arcuate splint; 4121-a second guide bar; 413-pressure buffer; 4131-sleeve; 4132-a second touch switch; 4133-a buffer spring;
42-a torque detection mechanism; 421-sliding clamp plate; 4211-protruding strips; 422-rotating disc; 4221-a first bearing; 423-spin column; 4231-a second bearing; 4232-torsion spring; 424-torque sensor;
43-a contact sensing mechanism; 431-a first touch switch; 432-a touch-press lever;
44-a clamping drive mechanism; 441-a rotating ring; 4411-a third bearing; 4412-convex column; 4413-looping; 442-a slide bar; 443-a fixing frame; 444-a rotary drive; 4441-ferrule gear;
5-a lifting driver;
51-a lifter; 511-a fourth bearing;
6-cap screwing driver;
61-a driven gear;
7-plastic bottle;
8-bottle cap.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Referring to fig. 1-10, a bottle mouth defect detecting device for plastic bottles comprises a placing table 1, a positioning assembly 2 for fixing a plastic bottle 7 is arranged on the placing table 1, and a cap screwing detecting assembly 4 for detecting whether a bottle mouth of the plastic bottle 7 has a defect in a manner of screwing a bottle cap 8 is arranged right above the positioning assembly 2; the spiral cover detection assembly 4 is arranged on a frame body 3, the frame body 3 comprises a circular ring 31, a lower circular disc 32 and an upper circular disc 33 which are sequentially arranged from bottom to top, and the circular ring 31, the lower circular disc 32 and the upper circular disc 33 are fixed through a connecting frame 34; the placing table 1 is provided with a lifting driver 5 for driving the frame main body 3 to vertically move; the lifting driver 5 is provided with a cover screwing driver 6 for driving the frame main body 3 to rotate; the cap screwing detection assembly 4 comprises a first clamp 41, a torque detection mechanism 42 and a contact sensing mechanism 43; the number of the first clamps 41 is three, and the three first clamps 41 are all arranged on the circular ring 31 and are uniformly distributed along the circumferential direction of the circular ring 31; the torque detection mechanism 42 is arranged between the circular ring 31 and the lower disc 32, and the torque detection mechanism 42 is connected with the three first clamps 41 in a matching way; the contact sensing mechanism 43 is arranged on the positioning component 2, and when the circular ring 31 is contacted with the contact sensing mechanism 43, the bottle cap 8 is in a state of being completely screwed on the plastic bottle 7; a clamping driving mechanism 44 for driving the three first clamps 41 to clamp the bottle cap 8 is arranged between the upper disc 33 and the lower disc 32.
In the process of detecting whether the bottle mouth of the plastic bottle 7 has defects, firstly, several plastic bottles 7 are extracted from the same batch of plastic bottles 7 in a sampling inspection mode, then the plastic bottles 7 are placed on the placing table 1, the bottle mouth of each plastic bottle 7 is positioned at the positioning component 2, the positioning component 2 fixes the plastic bottles 7 in a mode of clamping the lower ends of the bottle mouths along with the starting of the positioning component 2, then, the cap screwing detection component 4 screws one bottle cap 8 on each plastic bottle 7, in the cap screwing operation process, the three first clamps 41 clamp the bottle caps 8 under the driving of the clamping driving mechanism 44, the bottle caps 8 and the bottle mouths of the plastic bottles 7 are positioned on the same axis, along with the gradual downward movement of the frame main body 3 driven by the lifting driver 5, the cap screwing driver 6 drives the frame main body 3 to rotate, the bottle caps 8 are screwed on the bottle mouths of the plastic bottles 7 slowly, and when the bottle caps 8 are screwed on the plastic bottles 7, because the screwing force of the bottle cap 8 is gradually increased along with the penetration in the process of screwing the bottle cap 8 on the plastic bottle 7, the torque detection mechanism 42 can gradually detect the torque of the bottle cap 8 in the process of screwing the bottle cap until the contact sensing mechanism 43 is triggered, the surface bottle cap 8 is completely screwed on the plastic bottle 7, if the torque detection mechanism 42 detects that the torque exceeds a normal range under the condition that the contact sensing mechanism 43 is not triggered, the bottleneck of the surface plastic bottle 7 has a defect, which affects the normal screwing of the bottle cap 8, if the torque detection mechanism 42 detects that the torque is always in a stable state in the process of screwing the bottle cap, the bottleneck thickness of the surface plastic bottle 7 does not correspond to the bottleneck of the plastic bottle 7, the sealing effect is unqualified, and whether the bottleneck of the plastic bottle 7 has a defect or whether the bottleneck thickness reaches the standard is judged by the way of measuring the torque by screwing the cap, the effect of accurate detection has been reached.
Referring to fig. 7 and 8, the first clamp 41 includes a first arc-shaped clamp plate 411; first arc splint 411 sets up the inboard at ring 31, the centre of a circle between first arc splint 411 and the ring 31, be equipped with along the orbit direction of the centre of a circle on the first arc splint 411 and pass the outside first guide bar 4111 that extends of ring 31, set up the guide way that supplies first guide bar 4111 to pass on the ring 31, inboard intermediate position department between every two adjacent first arc splint 411 all is equipped with a second arc splint 412, slide clamping between every second arc splint 412 and two corresponding first arc splint 411, be equipped with along the orbit direction of the centre of a circle on the second arc splint 412 and pass the outside second guide bar 4121 that extends of ring 31, set up the guide way that supplies second guide bar 4121 to pass on the ring 31, all be equipped with the pressure buffer piece 413 of being connected with clamping actuating mechanism 44 on every first guide bar 4111.
In the process of clamping the bottle cap 8, the three first guide rods 4111 are driven by the clamping driving mechanism 44 to simultaneously move towards the circular dots of the circular ring 31, the three first arc-shaped clamps 411 move inwards, in the moving process of the three first arc-shaped clamps 411, as one second arc-shaped clamp 412 is arranged between every two adjacent first arc-shaped clamps 411 in a sliding and clamping manner, along with the movement of the three first arc-shaped clamps 411, the second arc-shaped clamp 412 also moves along with the movement until the three second arc-shaped clamps 412 clamp the bottle cap 8, and due to the connection of the pressure buffer 413, when the three second arc-shaped clamps 412 clamp the bottle cap 8 thereon, the clamping force can be buffered, so that the situation that the bottle cap 8 is extruded and deformed is avoided.
Referring to fig. 7 and 8, the torque detection mechanism 42 includes a slide plate 421, a rotary plate 422, a rotary column 423, and a torque sensor 424; the number of the sliding clamping plates 421 is three, and the three sliding clamping plates 421 are respectively clamped at the center position of the inner side of the first arc-shaped clamping plate 411 in a sliding manner; the rotating disc 422 is coaxially arranged on the surface of the circular ring 31 facing the lower circular disc 32, the rotating disc 422 is connected with the circular ring 31 through a first bearing 4221, a strip-shaped opening extending towards the circle center is formed in the position, corresponding to each sliding clamping plate 421, of the rotating disc 422, and a protruding strip 4211 extending upwards through the corresponding strip-shaped opening is formed in each sliding clamping plate 421; the rotating column 423 is coaxially arranged between the rotating disc 422 and the lower disc 32, the lower end of the rotating column 423 is fixedly connected with the rotating disc 422, and the upper end of the rotating column 423 is connected with the rotating disc 422 through a second bearing 4231; the torque sensor 424 is fixedly arranged between the upper disc 33 and the lower disc 32, and an output shaft of the torque sensor 424 is coaxially and fixedly connected with the rotating column 423.
After the bottle cap 8 is clamped, the bottle cap 8 is gradually screwed into the plastic bottle 7 along with the rotation and vertical movement of the frame body 3, the state of clamping the bottle cap 8 is kept by the sliding clamp plate 421 relative to the first arc-shaped clamp plate 411 and the second arc-shaped clamp plate 412 along with the fact that the bottle cap 8 gradually penetrates into the lower end of the bottle opening of the plastic bottle 7, the first arc-shaped clamp plate 411 and the second arc-shaped clamp plate 412 rotate relative to the bottle cap 8, the torque sensor 424 rotates relative to the rotating column 423, and the output shaft of the torque sensor 424 is connected with the rotating column 423, so that the torque sensor 424 can sense the magnitude of the torque, and according to the change condition of the torque, whether the bottle cap 8 is screwed on the plastic bottle 7 to be blocked or not is judged, and whether the defect of the plastic bottle 7 exists or not is detected.
Referring to fig. 2, the contact sensing mechanism 43 includes a first touch switch 431 and a touch rod 432; the number of the first touch switches 431 is two, and the two first touch switches 431 are symmetrically arranged on the positioning assembly 2; the two touch pressure rods 432 are symmetrically arranged on two sides of the circular ring 31 and are respectively located at a position opposite to one first touch pressure switch 431, one end surface of each touch pressure rod 432 is flush with the lower surface of the circular ring 31, and when the touch pressure rods 432 completely trigger the first touch pressure switch 431, the lower surface of the bottle cap 8 is in a flush state with the surface of the step of the bottle opening of the plastic bottle 7.
After the bottle cap 8 is screwed into the plastic bottle 7 completely, the lower surface of the bottle cap 8 is in contact with the step at the lower end of the bottle opening of the plastic bottle 7, the touch rod 432 triggers the first touch switch 431, the bottle cap 8 on the surface is screwed on the plastic bottle 7 completely, so that the detection of the bottle cap 8 normally screwed on the plastic bottle 7 is more accurate, and the detection is combined with torque detection, so that whether a defect exists on the plastic bottle 7 is detected.
Referring to fig. 7, the rotating column 423 is sleeved with a torsion spring 4232, and two ends of the torsion spring 4232 are fixedly connected to the surface of the rotating disk 422 and the surface of the lower disk 32, respectively.
When the bottle cap 8 is screwed on the plastic bottle 7, the torsion spring 4232 is rotated relatively between the rotary disk 422 and the frame body 3, so that the torsion spring 4232 is changed from a normal state to a twisted state, and when the bottle cap 8 is detached from the plastic bottle 7, the torsion spring 4232 is restored from the twisted state to the normal state due to the acting force of the torsion spring 4232, and the rotation column 423 and the rotary disk 422 are rotated, so that the sliding clamp plate 421 returns to a normal position, and the output shaft of the torque sensor 424 also returns to the normal state under the rotation of the rotation column 423.
Referring to fig. 8, the pressure buffer 413 includes a sleeve 4131, a second touch switch 4132, and a buffer spring 4133; the sleeve is sleeved on the first guide rod 4111; the second touch switch 4132 is arranged at the end part of the sleeve, and the output end of the second touch switch 4132 is positioned in the sleeve; the buffer spring 4133 is disposed inside the sleeve and between the first guide rod 4111 and the second touch switch 4132, and two ends of the buffer spring 4133 are fixedly connected to an end of the first guide rod 4111 and an end of the sleeve, respectively.
When the clamping driving mechanism 44 drives the three sleeves to move towards the center of the circular ring 31 simultaneously, until the three sliding clamps 421 clamp the bottle cap 8 therein, in order to enable the three sliding clamps 421 to have clamping force on the bottle cap 8, therefore, the clamping driving mechanism 44 drives the three sleeves to continue to move towards the center of the circular ring 31, the buffer spring 4133 is changed from a normal state to a compressed state, until the first guide rod 4111 triggers the second touch switch 4132, the clamping driving mechanism 44 stops driving, the three sliding clamps 421 clamp the bottle cap 8, and when the bottle cap 8 is released, the buffer spring 4133 is restored from the compressed state to the normal state due to the acting force of the buffer spring 4133, therefore, the clamping force of the three sliding clamps 421 on the bottle cap 8 is gradually reduced until the bottle cap 8 is separated, so that the clamping on the bottle cap 8 is ensured, and the situation that the bottle cap 8 is clamped and deformed due to clamping is avoided.
Referring to fig. 7 and 9, the clamp driving mechanism 44 includes a rotary ring 441, a slide bar 442, and a fixing bracket 443; the rotating ring 441 is coaxially arranged between the upper disc 33 and the lower disc 32, the torque sensor 424 is positioned inside the rotating ring 441, and the rotating ring 441 is connected with the connecting frame 34 through a third bearing 4411; the three sliding rods 442 are arranged between the upper disc 33 and the lower disc 32, the three sliding rods 442 are uniformly distributed along the circumferential direction of the rotating ring 441 and are respectively located at the position corresponding to one pressure buffer piece 413, two ends of each sliding rod 442 are respectively arranged on the upper disc 33 and the lower disc 32 in a sliding manner, strip-shaped openings for the end portions of each sliding rod 442 to slide are formed in the upper disc 33 and the lower disc 32, and the sliding direction of each sliding rod 442 is respectively parallel to the axial direction of the corresponding sleeve; the three fixing frames 443 are respectively arranged between one sleeve and one corresponding slide rod 442, two ends of each fixing frame 443 are respectively fixedly connected with the corresponding sleeve and the lower end of the corresponding slide rod 442, a convex column 4412 is arranged on the rotary ring 441 at a position close to each slide rod 442, a loop bar 4413 is arranged between each convex column 4412 and the corresponding slide rod 442, and two ends of each loop bar 4413 are respectively sleeved on the corresponding convex column 4412 and the corresponding slide rod 442; the connecting frame 34 is provided with a rotary driver 444 for driving the rotary ring 441 to rotate, and the rotary ring 441 is sleeved with a ferrule gear 4441 in transmission connection with the rotary driver 444.
When the clamping driving mechanism 44 is driven, the rotating driver 444 drives the rotating ring 441 to rotate through the transmission connection with the collar gear 4441, and as the rotating ring 441 rotates, the rotating ring 441 drives the three collar rods 4413 to push the corresponding slide rods 442 to slide between the upper disc 33 and the lower disc 32 towards the center of the circular ring 31, and since each slide rod 442 is connected with the corresponding sleeve through the fixing frame 443, the sleeve is driven to move, so that the bottle cap 8 is clamped.
Referring to fig. 2 and 5, a lifting rod 51 in transmission connection with the lifting driver 5 is coaxially disposed at the top center of the connecting frame 34, and the end of the lifting rod 51 is connected to the connecting frame 34 through a fourth bearing 511.
When the frame body 3 moves vertically, the elevation driver 5 drives the elevation rod 51 to move vertically, thereby driving the vertical movement of the frame body 3, and the rotation of the frame body 3 is not hindered due to the connection between the elevation rod 51 and the frame body 3 through the fourth bearing 511.
Referring to fig. 2 and 5, a driven gear 61 in transmission connection with the cap screwing driver 6 is fixedly arranged on the connecting frame 34, and the driven gear 61 and the lifting rod 51 are coaxial.
When the frame body 3 rotates, the cap screwing driver 6 drives the frame body 3 to rotate through the transmission connection with the driven gear 61, and the cap screwing action is completed.
Referring to fig. 10, the positioning assembly 2 includes a second clamp 21; two second fixtures 21 are arranged, the two second fixtures 21 are symmetrically arranged on the placing table 1, each first touch switch 431 is respectively arranged on one second fixture 21, and the two second fixtures 21 can move relatively on the placing table 1; the placing table 1 is provided with a linear driver 22 for driving each second fixture 21 to move, when the two second fixtures 21 fix the plastic bottle 7 by clamping the lower end portion of the mouth of the plastic bottle 7 and the bottle cap 8 is clamped by the three first fixtures 41, the mouth of the plastic bottle 7 and the bottle cap 8 are in a coaxial state.
When the positioning assembly 2 clamps the lower end of the bottle mouth of the plastic bottle 7, the two linear drivers 22 synchronously drive the corresponding second fixtures 21 to move towards the plastic bottle 7 until the bottle mouth of the plastic bottle 7 is clamped between the two second fixtures 21, the bottle mouth of the plastic bottle 7 and the bottle cap 8 keep a coaxial position, the first touch switch 431 is installed on the second fixtures 21, the upper surface of the second fixtures 21 and the step surface of the lower end of the bottle mouth of the plastic bottle 7 keep flush, and after the ring 31 is supported on the second fixtures 21, the touch rod 432 simultaneously triggers the first touch switch 431 to detect whether the bottle cap 8 is screwed in place.
This application is twisted the in-process on plastic bottle 7 with bottle lid 8 through spiral cover determine module 4, detects out the condition that spiral cover in-process torsion changes to and twist the detection of targetting in place through bottle lid 8, judge whether bottle lid 8 can be normal complete twist on plastic bottle 7, improved the detection precision.
The above examples, which are intended to represent only one or more embodiments of the present invention, are described in greater detail and with greater particularity, and are not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A defect detection device for a bottle opening of a plastic bottle comprises a placing table (1), wherein a positioning assembly (2) used for fixing the plastic bottle (7) is arranged on the placing table (1), and a cap screwing detection assembly (4) used for detecting whether the bottle opening of the plastic bottle (7) has defects or not in a mode of screwing a bottle cap (8) is arranged right above the positioning assembly (2);
the screw cap detection assembly (4) is arranged on a frame main body (3), the frame main body (3) comprises a circular ring (31), a lower disc (32) and an upper disc (33) which are sequentially arranged from bottom to top, and the circular ring (31), the lower disc (32) and the upper disc (33) are fixed through a connecting frame (34);
the placing table (1) is provided with a lifting driver (5) for driving the frame main body (3) to vertically move;
a cover screwing driver (6) for driving the frame main body (3) to rotate is arranged on the lifting driver (5);
the screw cap detection assembly (4) is characterized by comprising a first clamp (41), a torque detection mechanism (42) and a contact sensing mechanism (43);
the number of the first clamps (41) is three, and the three first clamps (41) are all arranged on the circular ring (31) and are uniformly distributed along the circumferential direction of the circular ring (31);
the torque detection mechanism (42) is arranged between the circular ring (31) and the lower disc (32), and the torque detection mechanism (42) is connected with the three first clamps (41) in a matching mode;
the contact sensing mechanism (43) is arranged on the positioning component (2), and when the circular ring (31) is in contact with the contact sensing mechanism (43), the bottle cap (8) is in a state of being completely screwed on the plastic bottle (7);
a clamping driving mechanism (44) for driving the three first clamps (41) to clamp the bottle cap (8) is arranged between the upper disc (33) and the lower disc (32);
the first clamp (41) comprises a first arc-shaped clamping plate (411);
the first arc-shaped clamping plates (411) are arranged on the inner side of the circular ring (31), the first arc-shaped clamping plates (411) and the circular ring (31) are concentric, first guide rods (4111) penetrating through the circular ring (31) and extending outwards are arranged on the first arc-shaped clamping plates (411) along the track direction of the circle center, guide ports for the first guide rods (4111) to penetrate through are formed in the circular ring (31), a second arc-shaped clamping plate (412) is arranged at the middle position of the inner side between every two adjacent first arc-shaped clamping plates (411), each second arc-shaped clamping plate (412) is in sliding clamping connection with the corresponding two first arc-shaped clamping plates (411), second guide rods (4121) penetrating through the circular ring (31) and extending outwards are arranged on the second arc-shaped clamping plates (412) along the track direction of the circle center, guide ports for the second guide rods (4121) to penetrate through are formed in the circular ring (31), and pressure buffering pieces (413) connected with the clamping driving mechanism (44) are arranged on each first guide rod (4111);
the torque detection mechanism (42) comprises a sliding clamping plate (421), a rotating disc (422), a rotating column (423) and a torque sensor (424);
the number of the sliding clamping plates (421) is three, and the three sliding clamping plates (421) are respectively connected to the center position of the inner side of a first arc-shaped clamping plate (411) in a sliding and clamping mode;
the rotating disc (422) is coaxially arranged on the surface, facing the lower disc (32), of the circular ring (31), the rotating disc (422) is connected with the circular ring (31) through a first bearing (4221), strip-shaped openings extending towards the circle center are formed in the positions, corresponding to each sliding clamping plate (421), of the rotating disc (422), and protruding strips (4211) extending upwards through the corresponding strip-shaped openings are formed in each sliding clamping plate (421);
the rotating column (423) is coaxially arranged between the rotating disc (422) and the lower disc (32), the lower end of the rotating column (423) is fixedly connected with the rotating disc (422), and the upper end of the rotating column (423) is connected with the rotating disc (422) through a second bearing (4231);
the torque sensor (424) is fixedly arranged between the upper disc (33) and the lower disc (32), and an output shaft of the torque sensor (424) is coaxially and fixedly connected with the rotating column (423);
the contact sensing mechanism (43) comprises a first touch switch (431) and a touch rod (432);
the number of the first touch switches (431) is two, and the two first touch switches (431) are symmetrically arranged on the positioning assembly (2);
the two touch pressure rods (432) are symmetrically arranged on two sides of the circular ring (31) and are respectively located at a position right opposite to the first touch pressure switch (431), one end surface of each touch pressure rod (432) is flush with the lower surface of the circular ring (31), and when the touch pressure rods (432) completely trigger the first touch pressure switch (431), the lower surface of the bottle cap (8) is in a flush state with the surface of a bottle opening step of the plastic bottle (7).
2. The plastic bottle mouth defect detecting equipment as claimed in claim 1, wherein the rotating column (423) is sleeved with a torsion spring (4232), and two ends of the torsion spring (4232) are respectively and fixedly connected to the surface of the rotating disk (422) and the surface of the lower disk (32).
3. The plastic bottle mouth defect detecting equipment as claimed in claim 1, wherein the pressure buffer (413) comprises a sleeve (4131), a second touch switch (4132) and a buffer spring (4133);
the sleeve is sleeved on the first guide rod (4111);
the second touch switch (4132) is arranged at the end part of the sleeve, and the output end of the second touch switch (4132) is positioned inside the sleeve;
the buffer spring (4133) is arranged inside the sleeve and located between the first guide rod (4111) and the second touch switch (4132), and two ends of the buffer spring (4133) are fixedly connected with the end portion of the first guide rod (4111) and the end portion of the sleeve respectively.
4. The plastic bottle mouth defect detection equipment according to claim 3, wherein the clamping driving mechanism (44) comprises a rotating ring (441), a sliding rod (442) and a fixing frame (443);
the rotating ring (441) is coaxially arranged between the upper disc (33) and the lower disc (32), the torque sensor (424) is positioned inside the rotating ring (441), and the rotating ring (441) is connected with the connecting frame (34) through a third bearing (4411);
the three slide bars (442) are arranged between the upper disc (33) and the lower disc (32), the three slide bars (442) are uniformly distributed along the circumferential direction of the rotating ring (441) and are respectively positioned at the position corresponding to one pressure buffer piece (413), two ends of each slide bar (442) are respectively arranged on the upper disc (33) and the lower disc (32) in a sliding manner, strip-shaped openings for the end parts of each slide bar (442) to slide are formed in the upper disc (33) and the lower disc (32), and the sliding direction of each slide bar (442) is respectively parallel to the axial direction of the corresponding sleeve;
the three fixing frames (443) are respectively arranged between one sleeve and one corresponding sliding rod (442), two ends of each fixing frame (443) are respectively fixedly connected with the corresponding sleeve and the lower end of the corresponding sliding rod (442), a convex column (4412) is arranged on the rotating ring (441) close to each sliding rod (442), a loop bar (4413) is arranged between each convex column (4412) and the corresponding sliding rod (442), and two ends of each loop bar (4413) are respectively sleeved on the corresponding convex column (4412) and the corresponding sliding rod (442);
the connecting frame (34) is provided with a rotary driver (444) for driving the rotary ring (441) to rotate, and the rotary ring (441) is sleeved with a ferrule gear (4441) in transmission connection with the rotary driver (444).
5. The plastic bottle mouth defect detection equipment according to claim 4, wherein a lifting rod (51) in transmission connection with the lifting driver (5) is coaxially arranged at the top center of the connecting frame (34), and the end part of the lifting rod (51) is connected with the connecting frame (34) through a fourth bearing (511).
6. The plastic bottle mouth defect detecting equipment according to claim 5, wherein a driven gear (61) in transmission connection with the cap screwing driver (6) is fixedly arranged on the connecting frame (34), and the driven gear (61) and the lifting rod (51) share a common axis.
7. The apparatus for detecting defects at the mouth of a plastic bottle according to claim 1, wherein the positioning assembly (2) comprises a second clamp (21);
the number of the second clamps (21) is two, the two second clamps (21) are symmetrically arranged on the placing table (1), each first touch switch (431) is respectively installed on one second clamp (21), and the two second clamps (21) can move relatively on the placing table (1);
the placing table (1) is provided with a linear driver (22) for driving each second clamp (21) to move, and when the two second clamps (21) clamp the lower end parts of the bottle openings of the plastic bottles (7) to fix the plastic bottles (7) and the bottle caps (8) are clamped by the three first clamps (41), the bottle openings of the plastic bottles (7) and the bottle caps (8) are in a coaxial state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211235942.9A CN115308127B (en) | 2022-10-10 | 2022-10-10 | Plastic bottle bottleneck defect detecting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211235942.9A CN115308127B (en) | 2022-10-10 | 2022-10-10 | Plastic bottle bottleneck defect detecting equipment |
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| Publication Number | Publication Date |
|---|---|
| CN115308127A CN115308127A (en) | 2022-11-08 |
| CN115308127B true CN115308127B (en) | 2022-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211235942.9A Active CN115308127B (en) | 2022-10-10 | 2022-10-10 | Plastic bottle bottleneck defect detecting equipment |
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| CN (1) | CN115308127B (en) |
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| CN110487471A (en) * | 2019-09-06 | 2019-11-22 | 温州一鼎仪器制造有限公司 | A kind of Automatic bottle cap machine for testing torsion |
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| CN212458743U (en) * | 2020-08-21 | 2021-02-02 | 延锋伟世通汽车电子有限公司 | Torsion testing mechanism |
| CN213893354U (en) * | 2020-11-25 | 2021-08-06 | 浙江贝缇包装有限公司 | One-key-press uncapping bottle |
| CN113353864A (en) * | 2021-06-22 | 2021-09-07 | 江西钟山药业有限责任公司 | Packaging equipment for traditional Chinese medicine oral liquid bottle |
| CN215439594U (en) * | 2021-09-09 | 2022-01-07 | 世源科技(嘉兴)医疗电子有限公司 | Controllable elasticity twist bottle lid equipment |
| CN215439591U (en) * | 2021-08-03 | 2022-01-07 | 湖北三得利塑料包装有限公司 | Automatic bottle cap screwing device for PET plastic bottle |
| CN114964442A (en) * | 2022-05-25 | 2022-08-30 | 肇庆市艾特易仪器设备有限公司 | Integrated detection equipment for bottled products |
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2022
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| US4794801A (en) * | 1987-06-16 | 1989-01-03 | The Upjohn Company | Bottle cap removal torque tester |
| JPH10147398A (en) * | 1996-11-18 | 1998-06-02 | Sapporo Breweries Ltd | Jig for cap |
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| CN107367348A (en) * | 2017-02-17 | 2017-11-21 | 肇庆市艾特易仪器设备有限公司 | A kind of full-automatic twisted tension gauge and detection method |
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| CN110487471A (en) * | 2019-09-06 | 2019-11-22 | 温州一鼎仪器制造有限公司 | A kind of Automatic bottle cap machine for testing torsion |
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| CN212458743U (en) * | 2020-08-21 | 2021-02-02 | 延锋伟世通汽车电子有限公司 | Torsion testing mechanism |
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| CN113353864A (en) * | 2021-06-22 | 2021-09-07 | 江西钟山药业有限责任公司 | Packaging equipment for traditional Chinese medicine oral liquid bottle |
| CN215439591U (en) * | 2021-08-03 | 2022-01-07 | 湖北三得利塑料包装有限公司 | Automatic bottle cap screwing device for PET plastic bottle |
| CN215439594U (en) * | 2021-09-09 | 2022-01-07 | 世源科技(嘉兴)医疗电子有限公司 | Controllable elasticity twist bottle lid equipment |
| CN114964442A (en) * | 2022-05-25 | 2022-08-30 | 肇庆市艾特易仪器设备有限公司 | Integrated detection equipment for bottled products |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115308127A (en) | 2022-11-08 |
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