CN113310642A - Novel canned food airtightness detection device and detection method - Google Patents
Novel canned food airtightness detection device and detection method Download PDFInfo
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- CN113310642A CN113310642A CN202110698366.0A CN202110698366A CN113310642A CN 113310642 A CN113310642 A CN 113310642A CN 202110698366 A CN202110698366 A CN 202110698366A CN 113310642 A CN113310642 A CN 113310642A
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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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- 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
- G01M3/3281—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 removably mounted in a test cell
- G01M3/329—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 removably mounted in a test cell for verifying the internal pressure of closed containers
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a novel canned food airtightness detection device and a detection method, and the technical scheme is as follows: the end part of the supporting platform is abutted to the conveying platform; a plurality of food cans are arranged in the detection box; the first pushing device can push the detection box on the conveying platform to the supporting platform, and the second pushing device can push the detection box on the supporting platform to the conveying platform; the first air tightness detection device can detect the air tightness of all food cans in the detection box; the second air tightness detection device can detect the air tightness of each individual food can in the detection box; the automatic gripping device can grip and take out the food cans with poor air tightness in the detection box and convey the food cans to the inside of the collection box; the invention can detect all food cans on the production line without affecting the production efficiency.
Description
Technical Field
The invention relates to the technical field of canned food airtightness detection, in particular to a novel canned food airtightness detection device and a detection method.
Background
The canned food is stored in a container, most of microorganisms are killed through a sterilization process, the food can be stored at room temperature for a long time under the condition of maintaining the sealing and vacuum, the quality and the qualification rate of the canned food are determined by the air tightness of the canned food, the air tightness needs to be detected, and the reduction of the qualification rate of the product caused by the pollution and the deterioration of the microorganisms on the food in the container due to air leakage is avoided.
Chinese patent publication No. CN108482768B discloses an automatic detection system for food can airtightness of canned food, comprising a frame; the food can positioning mechanism comprises a rotary disc, a rotary motor and a plurality of food can positioning seats, wherein the rotary disc is rotatably arranged on the rack through a vertical rotary shaft, the rotary motor is used for driving the rotary disc to rotate, the food can positioning seats are arranged on the upper surface of the rotary disc and are uniformly distributed around the vertical rotary shaft in the circumferential direction, and food can positioning grooves for positioning food cans are formed in the upper surface of the food can positioning seats; the air tightness detection device is used for detecting the air tightness of the food can positioned in the food can positioning groove; a food can discharge conveyor belt; and the manipulator is used for conveying the food cans into the food can positioning grooves or conveying the food cans in the food can positioning grooves onto the food can discharging conveyor belt.
Above-mentioned this kind of food can gas tightness automatic check out system can short-term test canned food's food can's gas tightness, avoids causing jar interior food to be polluted by the microorganism, rotten problem because of the gas leakage of food can, but above-mentioned and traditional food can gas tightness automatic check out system still have some problems, for example: because the production quantity of food jar is great, if adopt above-mentioned or traditional food jar gas tightness automatic check out equipment to detect all food jars on the production line can waste a large amount of time, greatly reduced the production efficiency of enterprise, in the actual production course of working, the quantity of the food jar that has the gas tightness problem is very few, and carry out the selective examination to the food jar and can't guarantee the accuracy that detects completely again, consequently need provide a new scheme and solve above-mentioned problem.
Disclosure of Invention
In view of the problems mentioned in the background art, the invention aims to provide a novel canned food airtightness detection device and detection method, which can detect all food cans on a production line without affecting the production efficiency.
The technical purpose of the invention is realized by the following technical scheme:
a novel canned food airtightness detection device and a detection method comprise the following steps:
the end part of the supporting platform is abutted to the conveying platform;
the food can detection device comprises a detection box, a detection box and a control box, wherein a plurality of food cans are arranged inside the detection box;
the detection box on the conveying platform can be pushed to the supporting platform by the first pushing device, and the detection box on the supporting platform can be pushed to the conveying platform by the second pushing device;
the first air tightness detection device can detect the air tightness of all food cans in the detection box;
the second air tightness detection device can carry out air tightness detection on each individual food can in the detection box;
automatic grabbing device, automatic grabbing device can grab the food jar that detects the inside gas tightness of case poor and take out and carry to the inside of collecting box.
Furthermore, the detection box is a box body with an upper end open, a first groove is formed in the position, corresponding to the food can, inside the detection box, a second groove is formed in the outer end of the first groove, and the depth of the first groove is larger than that of the second groove.
Further, the second pushing device comprises a pushing cylinder and a support, the support is fixedly arranged at one end of the supporting platform, the pushing cylinder is fixedly arranged on the support, a pushing rod is arranged at one end, facing the conveying platform, of the pushing cylinder, and a pushing plate is fixedly arranged at the other end of the pushing rod.
Further, the first pushing device and the second pushing device have the same structure.
Further, first air tightness detection device sets up the upper end at conveying platform, first air tightness detection device includes first support frame, first support frame is fixed to be set up subaerial through many support columns, the fixed first cylinder that is provided with in upper end of first support frame, the telescopic link fixedly connected with clamp plate of first cylinder lower extreme, the fixed sealed pad that is provided with of lower extreme of clamp plate, the fixed sealing plug that is provided with of lower extreme of sealed pad, the sealing plug can stretch into the inside of detection case and accomplish sealedly, the clamp plate is provided with first pressure boost pipe with sealed middle part of filling up, the lower extreme of first pressure boost pipe is provided with first baroceptor and first outlet duct, the many guide bars of upper end fixedly connected with of clamp plate, the guide bar runs through first support frame setting.
Furthermore, the sealing gasket is provided with an annular groove at a position corresponding to the detection box, and the box body at the upper end of the detection box can extend into the annular groove.
Further, second gas tightness detection device sets up in supporting platform's upper end, second gas tightness detection device includes the second support frame, the second support frame is fixed through many support columns and is set up subaerial, the fixed second cylinder that is provided with of lower extreme of second support frame, the lower extreme of second cylinder passes through telescopic link fixedly connected with sealed cowling, the sealed cowling is the lower extreme open-ended cover body, the sealed cowling can stretch into to the inside of second recess and accomplish sealedly with the bottom of detection case, be provided with the second pressure boost pipe on the sealed cowling, the lower extreme of second pressure boost pipe is provided with second baroceptor and second outlet duct.
Furthermore, the automatic grabbing device comprises a fixed base, the fixed base is arranged on the ground through a supporting base, supporting arms capable of rotating along a plurality of angles are arranged on the fixed base, and grabbing structures are fixedly arranged at the front ends of the supporting arms at the tail ends; the grabbing structure comprises a fixed rod, a moving rod is arranged on the fixed rod, an adsorption piece is fixedly arranged at the other end of the moving rod, and a spring is arranged between the fixed rod and the adsorption piece.
Further, the lower extreme of second support frame is provided with the sliding guide structure, and the second cylinder can remove in the front, back and left and right direction through the sliding guide structure, and the sliding guide structure includes two longitudinal slide rails, and longitudinal slide rail sets up in the left and right both sides of the lower extreme of second support frame along preceding, rear direction, and it is provided with the transverse support pole to slide between two longitudinal slide rails, is provided with the lateral sliding device on the transverse support pole, and the second cylinder is fixed to be set up on the lateral sliding device.
A detection method of a novel canned food airtightness detection device comprises the following detection steps:
s1: feeding, wherein an operator puts the processed food cans into a detection box, and puts the detection box at the upper end of a conveying platform for conveying;
s2: the first air tightness detection device is used for carrying out air tightness detection on the detection box after the detection box passes through the lower end of the first air tightness detection device, if the air tightness detection result meets the requirement, the detection box is conveyed to the next station by the conveying platform, and if the air tightness detection result does not meet the requirement, the problem that one or more food cans in the detection box have poor air tightness is indicated, and further detection is needed;
s3: pushing the detection device, wherein when the detection box with poor air tightness passes through the first pushing device in the step S2, the detection box is pushed to the supporting platform by the first pushing device;
s4: secondary detection, wherein after the detection box is placed at the lower end of the second air tightness detection device, the second air tightness detection device can perform air tightness detection on each individual food can in the detection box;
s5: and (4) processing unqualified products, wherein after all the food cans in the detection box in the step S4 are detected, the automatic gripping device grips and takes out the food cans with unqualified air tightness and carries the food cans to the inside of the collection box, and then the rest food cans are pushed back to the conveying platform by the second pushing device along with the detection box.
In summary, the invention mainly has the following beneficial effects:
according to the invention, aiming at the characteristic that the number of food cans with air tightness problem is very small in the actual production and processing process, a novel detection method is adopted, all food cans on a production line can be detected, the air tightness of the food cans is ensured, the product quality is improved, meanwhile, the production efficiency is not influenced, and the enterprise benefit is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the detection box;
FIG. 3 is a schematic structural diagram of a second pushing device;
FIG. 4 is a schematic structural view of the interior of the first air tightness detecting device;
FIG. 5 is a schematic structural view of the second air tightness detecting device before operation;
FIG. 6 is a schematic structural view of the second air tightness detecting device after operation;
FIG. 7 is a schematic structural view of an automatic grasping apparatus;
fig. 8 is a partially enlarged view of a portion a in fig. 7.
In the figure: 1. a transfer platform; 2. a support platform; 3. a detection box; 301. a first groove; 302. a second groove; 4. a food can; 5. a first pushing device; 6. a second pushing device; 601. a push cylinder; 602. a support; 603. a push rod; 604. pushing the plate; 7. a first air-tightness detection device; 701. a first support frame; 702. a first cylinder; 703. pressing a plate; 704. a gasket; 7041. an annular groove; 705. a sealing plug; 706. a first booster duct; 707. a first air pressure sensor; 708. a first air outlet pipe; 709. a guide bar; 8. a second air tightness detection device; 801. a second support frame; 802. a second cylinder; 803. a sealing cover; 804. a second booster duct; 805. a second air pressure sensor; 806. a second air outlet pipe; 9. an automatic gripping device; 901. a fixed base; 902. a support arm; 903. grabbing the structure; 9031. fixing the rod; 9032. a travel bar; 9033. an adsorbing member; 9034. a spring; 10. a sliding guide rail structure; 1001. a longitudinal slide rail; 1002. a transverse support bar; 1003. a lateral sliding device; 11. and a collection box.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1, a novel canned food airtightness detection device comprises:
the detection box comprises a conveying platform 1 and a supporting platform 2, wherein the end part of the supporting platform 2 is abutted to the conveying platform 1, the supporting platform 2 and the conveying platform 1 are arranged vertically, a conveying belt is arranged at the upper end of the conveying platform 1, and the detection box 3 can be transported through the conveying belt;
a detection box 3, wherein a plurality of food cans 4 are arranged inside the detection box 3, and the food cans 4 can be in any shapes such as a cylindrical shape or a rectangular shape;
the detection box pushing device comprises a first pushing device 5 and a second pushing device 6, wherein the first pushing device 5 can push the detection box 3 on the conveying platform 1 to the supporting platform 2, and the second pushing device 6 can push the detection box 3 on the supporting platform 2 to the conveying platform 1;
a first air-tightness detection device 7, wherein the first air-tightness detection device 7 can detect the air tightness of all the food cans 4 in the detection box 3;
a second airtightness detection means 8, the second airtightness detection means 8 being capable of detecting the airtightness of each individual food can 4 inside the detection box 3;
Referring to fig. 1 and 2, the detection box 3 is a box body with an opening at the upper end, the detection box 3 can be a plastic sealing box, the plastic sealing box is formed by a blow molding process to ensure the sealing performance of the side edge and the bottom of the detection box, a first groove 301 is formed in the detection box 3 at a position corresponding to the food cans 4, the number of the first grooves 301 is nine, nine food cans 4 can be placed, a second groove 302 is formed in the outer end of the first groove 301, and the depth of the first groove 301 is greater than that of the second groove 302.
Referring to fig. 1 and 3, the second pushing device 6 includes a pushing cylinder 601 and a support 602, the support 602 is fixedly disposed at one end of the supporting platform 2, the pushing cylinder 601 is fixedly disposed on the support 602, a push rod 603 is disposed at one end of the pushing cylinder 601 facing the conveying platform 1, a push plate 604 is fixedly disposed at the other end of the push rod 603, and a cushion pad is disposed at one end of the push plate 604 close to the detection box 3.
Referring to fig. 1 and 3, the first pushing device 5 and the second pushing device 6 have the same structure, and the air cylinder provided on the first pushing device 5 is on the same straight line with the pushing air cylinder 601 provided on the second pushing device 6.
Referring to fig. 4, the first air tightness detecting device 7 is disposed at the upper end of the conveying platform 1, the first air tightness detecting device 7 includes a first supporting frame 701, the first supporting frame 701 is fixedly disposed on the ground through a plurality of supporting columns, a first air cylinder 702 is fixedly disposed at the upper end of the first supporting frame 701, a pressing plate 703 is fixedly connected to a telescopic rod at the lower end of the first air cylinder 702, a sealing gasket 704 is fixedly disposed at the lower end of the pressing plate 703, an annular groove 7041 is disposed at a position corresponding to the detecting box 3 of the sealing gasket 704, an upper box body of the detecting box 3 can extend into the annular groove 7041, a sealing plug 705 is fixedly disposed at the lower end of the sealing gasket 704, the sealing plug 705 can extend into the detecting box 3 to complete sealing, when the sealing plug 705 extends into the detecting box 3, the sealing gasket 704 can be tightly pressed on the upper end of the detecting box 3 to complete a second sealing, a first sealing gasket 706 is disposed at the middle portion between the pressing plate 703 and the sealing gasket 704, a first air pressure sensor 707 and a first air outlet pipe 708 are arranged at the lower end of the first booster pipe 706, two guide rods 709 are fixedly connected to the upper end of the pressing plate 703, the guide rods 709 penetrate through the first support frame 701, a shaft sleeve is arranged at the position of the first support frame 701 corresponding to the guide rods 709, and the guide rods 709 are arranged inside the shaft sleeve.
Referring to fig. 5 and 6, the second air tightness detecting device 8 is disposed at the upper end of the supporting platform 2, the second air tightness detecting device 8 includes a second supporting frame 801, the second supporting frame 801 is fixedly disposed on the ground through a plurality of supporting columns, a second air cylinder 802 is fixedly disposed at the lower end of the second supporting frame 801, a sealing cover 803 is fixedly connected to the lower end of the second air cylinder 802 through an expansion link, the sealing cover 803 is a cover body with an opening at the lower end, the sealing cover 803 can extend into the second groove 302 to complete sealing with the bottom of the detection box 3, the sealing cover 803 is in interference fit with the second groove 302 to ensure sealing performance after fitting, a second pressure increasing pipe 804 is disposed on the sealing cover 803, and a second air pressure sensor 805 and a second air outlet pipe 806 are disposed at the lower end of the second pressure increasing pipe 804.
Referring to fig. 7, the automatic gripping device 9 includes a fixed base 901, the fixed base 901 is disposed on the ground through a supporting base, a supporting arm 902 capable of rotating along a plurality of angles is disposed on the fixed base 901, the automatic gripping device 9 can grip and place the food cans 4 on the supporting platform 2 into the collecting box 11, and a gripping structure 903 is fixedly disposed at the front end of the supporting arm 902 at the end.
Referring to fig. 7 and 8, the grabbing structure 903 includes a fixing rod 9031, a moving rod 9032 is disposed on the fixing rod 9031, an adsorbing member 9033 is fixedly disposed at the other end of the moving rod 9032, the adsorbing member 9033 may use a suction cup or a magnet or other adsorbing structure according to the material of the food can 4, and a spring 9034 is disposed between the fixing rod 9031 and the adsorbing member 9033.
Referring to fig. 5 and 6, the lower end of the second supporting frame 801 is provided with a sliding guide structure 10, the second cylinder 802 can move in the front and rear and left and right directions through the sliding guide structure 10, the sliding guide structure 10 includes two longitudinal sliding rails 1001, the longitudinal sliding rails 1001 are along the front, the rear direction sets up in the lower extreme left and right both sides of second support frame 801, it is provided with horizontal bracing piece 1002 to slide between two longitudinal slide rails 1001, the fixed motor drive wheel that is provided with of one end of horizontal bracing piece 1002, the motor drive wheel sets up in one of them longitudinal slide rail 1001, the motor drive wheel can drive horizontal bracing piece 1002 and slide in longitudinal slide rail 1001, be provided with lateral sliding device 1003 on the horizontal bracing piece 1002, lateral sliding device 1003 can adopt electronic dolly of track, can move on horizontal bracing piece 1002 left and right after electronic dolly of track work, second cylinder 802 is fixed to be set up on lateral sliding device 1003.
A detection method of a novel canned food airtightness detection device comprises the following detection steps:
s1: feeding, wherein an operator puts the processed food cans 4 into the first grooves 301 in the detection boxes 3, and puts the detection boxes 3 at the upper ends of the conveying platforms 1 for conveying;
s2: preliminary detection, after the detection box 3 passes through the lower end of the first air tightness detection device 7, the first air tightness detection device 7 performs air tightness detection on the detection box 3, at this time, the first air cylinder 702 works to drive the pressing plate 703 to descend through the telescopic rod, the pressing plate 703 drives the sealing gasket 704 and the sealing plug 705 to descend, after the sealing plug 705 extends into the detection box 3, at this time, the upper end of the detection box 3 extends into the annular groove 7041 to complete sealing work, then, the first booster pipe 706 is ventilated through an external booster pump, air enters the detection box 3 through the first air outlet pipe 708, when the first air pressure sensor 707 detects that the air pressure inside the detection box 3 reaches a set value P1, the booster pump is closed, after 10s of pressure maintaining, the first air pressure sensor 707 detects that the air pressure inside the detection box 3 is P2, then, the delta P1-P2 is calculated, if the air tightness detection result meets the requirement, if the air tightness detection result does not meet the requirement, if the delta P is greater than the set value, the problem that one or more food cans 4 in the detection box 3 have poor air tightness is indicated, and further detection is needed;
s3: pushing the detection device, wherein when the detection box 3 with poor air tightness passes through the first pushing device 5 in the step S2, the detection box is pushed onto the supporting platform 2 by the first pushing device 5, and at this time, the cylinder on the first pushing device 5 drives the pushing plate arranged at the front end of the cylinder to push the detection box 3 to the lower end of the second air tightness detection device 8;
s4: second detection, after the detection box 3 is placed at the lower end of the second air tightness detection device 8, the second air tightness detection device 8 can perform air tightness detection on each individual food can 4 in the detection box 3, at this time, the second air cylinder 802 works to drive the sealing cover 803 to descend, when the sealing cover 803 is matched with the second groove 302 to complete sealing, an individual cavity is formed at the bottom of the detection box 3 and the sealing cover 803, an external booster pump is used for ventilating into the second booster pipe 804, air enters the cavity through the second air outlet pipe 806, when the second air pressure sensor 805 detects that the air pressure in the detection box 3 reaches a set value P3, the booster pump is turned off, after 10s of pressure maintaining, the second air pressure sensor 805 detects that the air pressure in the detection box 3 is P4, then, the calculated delta P is P3-P4, if the air tightness detection result meets the requirement, the delta P is smaller than the set value, if the air tightness detection result does not meet the requirement, the delta P is larger than a set value at the moment, the food can 4 is an unqualified product, then the second air cylinder 802 rises to sequentially detect other eight food cans 4, when the second air tightness detection device 8 detects nine food cans 4 in the detection box 3, the nine food cans 4 are numbered according to the sequence of one to nine and are sequentially detected, and the detection result is synchronously uploaded to a computer;
s5: and (4) processing unqualified products, wherein after all the food cans 4 in the detection box 3 in the step S4 are detected, the automatic gripping device 9 grips the food cans 4 with unqualified air tightness according to the detection result and conveys the food cans to the inside of the collection box 11, and then the rest food cans 4 are pushed back to the conveying platform 1 by the second pushing device 6 along with the detection box 3 and conveyed to the next station.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a novel canned food gas tightness detection device which characterized in that includes:
the conveying platform (1) and the supporting platform (2), wherein the end part of the supporting platform (2) is abutted against the conveying platform (1);
the food can detection device comprises a detection box (3), wherein a plurality of food cans (4) are arranged in the detection box (3);
the detection device comprises a first pushing device (5) and a second pushing device (6), wherein the first pushing device (5) can push the detection box (3) on the conveying platform (1) to the supporting platform (2), and the second pushing device (6) can push the detection box (3) on the supporting platform (2) to the conveying platform (1);
a first air tightness detection device (7), wherein the first air tightness detection device (7) can detect the air tightness of all food cans (4) in the detection box (3);
a second tightness detection device (8), the second tightness detection device (8) being capable of performing tightness detection on each individual food can (4) inside the detection box (3);
the automatic gripping device (9), the automatic gripping device (9) can grab the food can (4) with poor air tightness in the detection box (3) and take out and carry the food can to the inside of the collection box (11).
2. The novel canned food airtightness detection device according to claim 1, wherein: the detection box (3) is a box body with an opening at the upper end, a first groove (301) is formed in the position, corresponding to the food can (4), in the detection box (3), a second groove (302) is formed in the outer end of the first groove (301), and the depth of the first groove (301) is larger than that of the second groove (302).
3. The novel canned food airtightness detection device according to claim 1, wherein: the second pushing device (6) comprises a pushing cylinder (601) and a support (602), the support (602) is fixedly arranged at one end of the supporting platform (2), the pushing cylinder (601) is fixedly arranged on the support (602), one end, facing the conveying platform (1), of the pushing cylinder (601) is provided with a push rod (603), and the other end of the push rod (603) is fixedly provided with a push plate (604).
4. The novel canned food airtightness detection device according to claim 3, wherein: the first pushing device (5) and the second pushing device (6) have the same structure.
5. The novel canned food airtightness detection device according to claim 1, wherein: the first air tightness detection device (7) is arranged at the upper end of the conveying platform (1), the first air tightness detection device (7) comprises a first support frame (701), the first support frame (701) is fixedly arranged on the ground through a plurality of support columns, a first air cylinder (702) is fixedly arranged at the upper end of the first support frame (701), a telescopic rod at the lower end of the first air cylinder (702) is fixedly connected with a pressing plate (703), a sealing gasket (704) is fixedly arranged at the lower end of the pressing plate (703), a sealing plug (705) is fixedly arranged at the lower end of the sealing gasket (704), the sealing plug (705) can extend into the detection box (3) to complete sealing, a first pressure increasing pipe (706) is arranged in the middle of the pressing plate (703) and the sealing gasket (704), a first air pressure sensor (707) and a first air outlet pipe (708) are arranged at the lower end of the first pressure increasing pipe (706), a plurality of guide rods (709) are fixedly connected at the upper end of the pressing plate (703), the guide rod (709) penetrates through the first support frame (701).
6. The novel canned food airtightness detection device according to claim 5, wherein: the sealing gasket (704) is provided with an annular groove (7041) at a position corresponding to the detection box (3), and the box body at the upper end of the detection box (3) can extend into the annular groove (7041).
7. The novel canned food airtightness detection device according to claim 2, wherein: second gas tightness detection device (8) set up in the upper end of supporting platform (2), second gas tightness detection device (8) include second support frame (801), second support frame (801) are fixed through many support columns to be set up subaerial, the fixed second cylinder (802) that is provided with of lower extreme of second support frame (801), the lower extreme of second cylinder (802) passes through telescopic link fixedly connected with sealed cowling (803), sealed cowling (803) are the lower extreme open-ended cover body, sealed cowling (803) can stretch into to the inside of second recess (302) and accomplish sealedly with the bottom of detection case (3), be provided with second pressure boost pipe (804) on sealed cowling (803), the lower extreme of second pressure boost pipe (804) is provided with second baroceptor (805) and second outlet duct (806).
8. The novel canned food airtightness detection device according to claim 1, wherein: the automatic grabbing device (9) comprises a fixed base (901), the fixed base (901) is arranged on the ground through a supporting base, a supporting arm (902) capable of rotating along a plurality of angles is arranged on the fixed base (901), and a grabbing structure (903) is fixedly arranged at the front end of the supporting arm (902) at the tail end; the grabbing structure (903) comprises a fixed rod (9031), a movable rod (9032) is arranged on the fixed rod (9031), an adsorption piece (9033) is fixedly arranged at the other end of the movable rod (9032), and a spring (9034) is arranged between the fixed rod (9031) and the adsorption piece (9033).
9. The novel canned food airtightness detection device according to claim 7, wherein: the lower extreme of second support frame (801) is provided with sliding guide structure (10), second cylinder (802) can be in the front through sliding guide structure (10), back and left and right direction move, sliding guide structure (10) include two longitudinal slide rail (1001), longitudinal slide rail (1001) are along the front, the rear direction sets up in the lower extreme left and right both sides of second support frame (801), it is provided with horizontal bracing piece (1002) to slide between two longitudinal slide rail (1001), be provided with horizontal slider (1003) on horizontal bracing piece (1002), second cylinder (802) are fixed to be set up on horizontal slider (1003).
10. The detection method of the novel canned food airtightness detection device according to claim 1, characterized in that: the method comprises the following detection steps:
s1: feeding, wherein an operator puts the processed food cans (4) into the detection box (3), and puts the detection box (3) at the upper end of the conveying platform (1) for conveying;
s2: the detection method comprises the steps of performing primary detection, wherein after the detection box (3) passes through the lower end of the first air tightness detection device (7), the first air tightness detection device (7) performs air tightness detection on the detection box (3), if the air tightness detection result meets the requirement, the detection box (3) is conveyed to the next station by the conveying platform (1), and if the air tightness detection result does not meet the requirement, the problem that one or more food cans (4) in the detection box (3) have poor air tightness is indicated, and further detection is needed;
s3: pushing the detection device, wherein when the detection box (3) with poor air tightness passes through the first pushing device (5) in the step S2, the detection box is pushed onto the supporting platform (2) by the first pushing device (5);
s4: secondary detection, wherein after the detection box (3) is placed at the lower end of the second air tightness detection device (8), the second air tightness detection device (8) can perform air tightness detection on each individual food can (4) in the detection box (3);
s5: and (4) processing unqualified products, wherein after all the food cans (4) in the detection box (3) in the step S4 are detected, the automatic gripping device (9) grips and takes out the food cans (4) with unqualified air tightness and conveys the food cans to the inside of the collection box (11), and then the rest food cans (4) are pushed back to the conveying platform (1) by the second pushing device (6) along with the detection box (3).
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