CN209113444U - A kind of spiral cover detection device - Google Patents
A kind of spiral cover detection device Download PDFInfo
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- CN209113444U CN209113444U CN201821289724.2U CN201821289724U CN209113444U CN 209113444 U CN209113444 U CN 209113444U CN 201821289724 U CN201821289724 U CN 201821289724U CN 209113444 U CN209113444 U CN 209113444U
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- lever
- product
- spiral cover
- rotation fulcrum
- receiving end
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Abstract
The utility model discloses a kind of spiral cover detection devices, including bracket, the first lever, the second lever and proximity sensor, the identification of the product to spiral cover exception is realized by lever and proximity sensor, and corresponding signal is sent to control centre, so that control centre carries out respective handling to the product of spiral cover exception.The utility model is greatly improved the accuracy rate of testing result.
Description
Technical field
The utility model relates to the detections of spiral cover in food packaging more particularly to a kind of utilization lever principle detection spiral cover to be
No normal detection device.
Background technique
Screw lid uses generally in food packaging, is a kind of common packaging screwed by thread helix backspin to bottleneck
Material.But during daily production and application, by the shadow of screw lid helix parameter, the deformation extent of lid and bottleneck correspondence etc.
It rings, screw lid and bottleneck supination police bottle cap occur and revolve situation appearance askew or that rotation is not tight.
Currently, whether conventional detection spiral cover is there are two types of formal approaches: one is cooperating vision by photoelectric sensor
System detects gap；The second is detecting difference in height using small luminous point photoelectric sensor.Both detect its early investment cost
It is higher, and for safeguarding that it is required that the professional degree of user of service has, that additionally there are detection errors is higher, stability is poor etc.
The problem of.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of spiral cover detection device, energy
Solve the problems, such as in the prior art the at high cost of detection device for spiral cover detection, error is higher, stability is poor etc..
The purpose of this utility model is implemented with the following technical solutions:
A kind of spiral cover detection device, including bracket, the first lever, the second lever and proximity sensor；The bracket is fixed
The conveyor belt two sides for transporting product to be detected are mounted on, the first lever is fixedly mounted on the bracket and the first lever is located at
Above conveyer belt；First lever is equipped with rotation fulcrum, and the second lever is mounted on the first lever and the by rotation fulcrum
Two levers are rotated along the rotation fulcrum；One end of second lever be test side and contacted with the product to be detected on conveyer belt,
The other end is receiving end；When lever is stablized, the position where receiving end is denoted as first position；The fixed peace of the proximity sensor
It fills on the second position, the second position is on the camber line that receiving end rotates when the second lever is rotated along rotation fulcrum；
When product to be detected is moved to test side and with detection end in contact, the second lever along rotation fulcrum by conveyer belt
When rotation, the arc length generated when system is rotated according to receiving end obtains product to be detected at a distance from first position to the second position
It whether is substandard product；When product to be detected is substandard product, receiving sensor generates voltage signal and by the voltage
Signal is sent to control centre, so that control centre handles the substandard product.
Further, the second lever is divided by lever short side and lever long side by rotation fulcrum, and on lever short side
Counter weight device is installed, so that the second lever keeps stablizing.
Further, the weight f of counter weight device meets following formula:
(F1+f)*R1=F2*R2, wherein R1Length, R for lever short side2Length, F for lever long side1It is short for lever
Gravity, the F on side itself2For the gravity of lever long side itself.
Further, if the maximum value of the spiral cover difference in height of capping product is 0, the arc length that receiving end generates is greater than
Zero, product to be detected is unqualified；
If the maximum value of the spiral cover difference in height of capping product is H, the arc length that receiving end generates is greater than or equal to first
Distance L of the position to the second position2, product to be detected is unqualified；
Wherein, distance L of the first position to the second position2Meet following formula:
L1: L2=R1:R2, wherein L1The arc length that test side generates when rotating for lever short side along rotation fulcrum, L2For thick stick
The arc length that receiving end generates when bar long side is rotated along rotation fulcrum, R1Length, R for lever short side2For the length of lever long side
Degree；Wherein L1=∠ α * π * R1/ 180, L2=∠ β * π * R1/ 180, ∠ α are that lever short side is produced when rotating along rotation fulcrum
Central angle, ∠ β lever long side generated central angle when being rotated along rotation fulcrum, and ∠ α=∠ β；Wherein L1It is equal to
The maximum value H of the spiral cover difference in height of capping product, H > 0.
Compared with prior art, the utility model has the beneficial effects that:
Lever principle is applied to and detects to the product of spiral cover exception by the utility model, passes through lever and close sensing
Device detection obtains underproof product, and by sending corresponding signal to control centre, so that control centre is to unqualified production
Product are handled.The proximity sensor that the utility model uses is detected unlike conventionally employed photoelectric sensor, photoelectric transfer
Sensor may be influenced by extraneous factors such as extraneous light source, conveyer belt shakes and cause testing result inaccurate, occur compared with
The case where big error, occurs.The utility model is greatly improved the accuracy rate of testing result.
Detailed description of the invention
Fig. 1 is a kind of front view of spiral cover detection device provided by the utility model；
Fig. 2 is a kind of side view of spiral cover detection device provided by the utility model.
In figure: 1, product to be detected；2, conveyer belt；3, leverage；31, the second lever；32, bracket；4, close to sensing
Device；5, counter weight device.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that
Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new
Embodiment.
The utility model realized using lever principle detection spiral cover whether install normally, that is to say with proximity sensor 4,
Detection device based on lever dolly 32, can be realized solve detection device in the prior art premise input cost it is high,
The problems such as detection error is big greatly improves recall rate, reduces the cost of manual maintenance.
The utility model includes bracket 32, leverage 3 and proximity sensor 4, and wherein bracket 32 is for installing lever dress
3 are set, for example bracket 32 is fixedly mounted on 2 two sides of conveyer belt.
Leverage 3 include the first lever and the second lever 31, wherein the first lever be fixedly mounted on bracket 32 and
First lever is equipped with rotation fulcrum.Second lever 31 is mounted on the first lever by rotation fulcrum and 31 energy of the second lever
It is enough to be rotated upwardly and downwardly along the rotation fulcrum.
One end of second lever 31 is test side, the other end is receiving end；Wherein test side with it is to be detected on conveyer belt 2
Product 1 contacts.The second lever 31 is divided for lever short side and lever long side by rotation fulcrum, that is to say that test side is located at lever
On short side, receiving end is located in lever long side.When product 1 to be detected passes through corresponding position by conveyer belt, test side can
Touch the bottle cap of product 1 to be detected.
When the first lever and the second lever 31 is arranged, it is necessary first to consider the bottle height height of product 1 to be detected.It that is to say
It says, in the case where lever is stablized, the height of test side is infinitely close to the normal product bottle cap of spiral cover.
So when detecting: when the normal product of spiral cover passes through the test side, test side would not be moved；And when rotation
When the abnormal product of lid is held after testing, due to the height of test side be it is consistent with the height of the normal bottle height of spiral cover, should
Test side will move, i.e. the second lever 31 is rotated along fulcrum towards conveyer belt direction of advance opposite direction upwards.
In addition, in order to guarantee the stability of the second lever 31, needing examining since fulcrum is between test side and receiving end
It surveys end and increases counter weight device 5.When setting the weight of counter weight device 5, also according to lever principle (F1+f)*R1=F2*R2Come true
Determine, wherein R1Length, R for lever short side2Length, F for lever long side1For gravity, the F of lever short side itself2It is long for lever
The gravity on side itself, f are the weight of counter weight device 5.
In addition, the position where receiving end is denoted as first position when lever is stablized；The fixed peace of the proximity sensor 4
It fills on the second position.Wherein, the second position be when the second lever 31 is rotated along rotation fulcrum receiving end rotate camber line on.
In the actual use process, proximity sensor 4 can be fixed on corresponding position by fixed frame or other equipment.Such as
By linking up with, pass through mounting and fixing support etc. on a moving belt.It is conventional that proximity sensor 4 in the present invention can be comparison, than
Such as condenser type, inductance type may be implemented.
Since the product of spiral cover exception is different from the spiral cover height of the normal product of spiral cover, work as the product of spiral cover exception
When holding after testing, test side is rotated up and is subjected to displacement towards conveyer belt direction of advance opposite direction, while receiving end can also be sent out
Raw displacement, and receiving end reaches or passes through proximity sensor 4, so that proximity sensor 4 is believed to generate corresponding voltage
Number, and voltage signal is sent to control centre, so that control centre performs corresponding processing the product of spiral cover exception.
For example, receiving end is rotating when receiving end is located on the second position (when first position is not overlapped with the second position)
When, move closer to proximity sensor 4, i.e., the arc length displacement that receiving end generates be less than between first position and the second position away from
From, so that the generation voltage signal of proximity sensor 4, and voltage signal is sent to control centre, so that control centre is to the rotation
The abnormal product of lid carries out respective handling.
Certainly, if the arc length displacement that is produced from receiving end is greater than the distance between first position and the second position, the production of detection
Product are also underproof.Because proximity sensor 4 is arranged on the mobile camber line in receiving end, as long as having underproof product and inspection
End in contact is surveyed, the second lever 31 will be made to rotate, such receiving end will be close proximity to sensor 4, at this time close to biography
Sensor 4 will generate voltage signal in addition, even if the arc length displacement that is produced from receiving end is greater than or equal to first position and the second position
The distance between when, product 1 to be detected be also it is underproof, proximity sensor 4 can equally generate voltage signal.
In addition, in actual application process, the differentiation as existing for machinery may have corresponding spiral cover height
In the range of certain allow, it is considered as qualified product, it in this case, may will be right if also press above-mentioned judgement
The misjudgment of such product, and it is construed as substandard product.
In order to assert that this kind of product is qualified product, present invention introduces this concepts of spiral cover difference in height, in other words,
Spiral cover difference in height thinks that product 1 to be detected is qualified within a certain range.Fixation for proximity sensor 4
Position further limits, and that is to say that the second position of installation proximity sensor 4 must satisfy the following conditions:
The arc length L when rotation of test side can be calculated according to arc length formula L=n* π * r/1801.In addition, due to thick stick
Bar short side and lever long side are on the second lever 31, therefore test side is when rotated, and the receiving end positioned at lever long side also can
It rotates and generates arc length L2；Meanwhile the rotational angle of the two is identical.
It that is to say: L1: L2=∠ α * π * R1/180:∠β*π*R2/ 180=R1:R2(1)。
Wherein, it is considered qualified in certain allowed band due to spiral cover height, arc length L here1Just
It is considered the maximum value H of the spiral cover difference in height of qualified products.(when rotated, since the angle of rotation is little, it can thus be assumed that
The difference in height and arc length are identical)
Therefore, when 1 qualification of product to be detected can be calculated by formula (1), the longest arc length of receiving end rotation generation
L2Size, therefore can obtain the second position by first position, that is to say the position that proximity sensor 4 is fixedly mounted.This
Sample when detecting, when spiral cover abnormal products are held after testing, since the extremely corresponding spiral cover difference in height of its spiral cover is greater than
H, therefore arc length L caused by receiving end can also be greater than L2.It therefore, can be by judging arc length L and first position to second
The distance L set2Size relation judge whether current product to be detected 1 qualified.It that is to say, product 1 to be detected is by inspection
When surveying end: only arc length L is greater than or equal to first position to the distance L of the second position2, i.e., receiving end towards conveying tape travel side
Reached when being rotated upwards to opposite direction or bypassed the second position and install far from proximity sensor 4 position when, it is believed that should be to
Testing product 1 is substandard product, then proximity sensor 4 generates voltage signal, such as 24VDV voltage signal, and is sent to
To PLC, so that PLC handles the product of spiral cover exception.For example opened by control cylinder solenoid valve, by the rotation
The abnormal product of lid is rejected from conveyer belt 2, prevents the treatment process for entering next ring.
In addition, if product to be detected 1 is held after testing, and the arc length that receiving end generates is less than L2(receiving end is located at this time
Between first position and the second position) when, then illustrate, the spiral cover difference in height of the capping product is less than H, that is to say, this is to be checked
The spiral cover difference in height of product 1 is surveyed within allowed band, therefore, it is considered that product to be detected 1 is qualified products.
The prior art is usually to install photoelectric sensor on 2 side of conveyer belt, detects body by photoelectric sensor
Height it is whether abnormal come the spiral cover for judging product, the shadow due to photoelectric sensor by the shake of external light source or conveyer belt 2
It rings, leads to problems such as testing result, maintenance cost high.And the proximity sensor 4 in the application, not by external light source and conveying
Band effect of jitter, is greatly improved the accuracy of its testing result.By by the utility model and traditional photoelectric sensor
Detection method compares, and the bad detection effect of gained spiral cover is respectively less than 8%, is specifically shown in Table 1.
The comparison of 1 lever of table detection and the testing result of Photoelectric Detection
Above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model
Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacement belong to
In the utility model range claimed.
Claims (4)
1. a kind of spiral cover detection device, it is characterised in that: including bracket, the first lever, the second lever and proximity sensor；It is described
Bracket is fixedly mounted on the conveyor belt two sides for transporting product to be detected, and the first lever is fixedly mounted on the bracket and first
Lever is located above conveyer belt；First lever is equipped with rotation fulcrum, and the second lever is mounted on the first lever by rotation fulcrum
Upper and the second lever is rotated along the rotation fulcrum；One end of second lever be test side and with the production to be detected on conveyer belt
Product contact, the other end are receiving end；When lever is stablized, the position where receiving end is denoted as first position；The close sensing
Device is fixedly mounted on the second position, and the second position is the camber line that receiving end rotates when the second lever is rotated along rotation fulcrum
On；
When product to be detected is moved to test side by conveyer belt and rotates with detection end in contact, the second lever along rotation fulcrum
When, whether the arc length generated when system is rotated according to receiving end obtains product to be detected at a distance from first position to the second position
For substandard product；When product to be detected is substandard product, receiving sensor generates voltage signal and by the voltage signal
It is sent to control centre, so that control centre handles the substandard product.
2. the apparatus according to claim 1, it is characterised in that: by rotation fulcrum by the second lever be divided into lever short side and
Lever long side, and counter weight device is installed on lever short side, so that the second lever keeps stablizing.
3. the apparatus of claim 2, it is characterised in that: the weight f of counter weight device meets following formula:
(F1+f)*R1=F2*R2, wherein R1Length, R for lever short side2Length, F for lever long side1For lever short side itself
Gravity, F2For the gravity of lever long side itself.
4. the apparatus according to claim 1, it is characterised in that:
If the maximum value of the spiral cover difference in height of capping product is 0, the arc length that receiving end generates is greater than zero, and product to be detected is not
It is qualified；
If the maximum value of the spiral cover difference in height of capping product is H, the arc length that receiving end generates is greater than or equal to first position
To the distance L of the second position2, product to be detected is unqualified；
Wherein, distance L of the first position to the second position2Meet following formula:
L1: L2=R1:R2, wherein L1The arc length that test side generates when rotating for lever short side along rotation fulcrum, L2It is long for lever
Edge rotation fulcrum rotation when receiving end generate arc length, R1Length, R for lever short side2For the length of lever long side；Its
Middle L1=∠ α * π * R1/ 180, L2=∠ β * π * R1/ 180, ∠ α are generated circle when lever short side is rotated along rotation fulcrum
Heart angle, ∠ β lever long side generated central angle when being rotated along rotation fulcrum, and ∠ α=∠ β；Wherein L1Equal to spiral cover
The maximum value H of the spiral cover difference in height of product, H > 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821289724.2U CN209113444U (en) | 2018-08-10 | 2018-08-10 | A kind of spiral cover detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821289724.2U CN209113444U (en) | 2018-08-10 | 2018-08-10 | A kind of spiral cover detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209113444U true CN209113444U (en) | 2019-07-16 |
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ID=67196879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821289724.2U Active CN209113444U (en) | 2018-08-10 | 2018-08-10 | A kind of spiral cover detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209113444U (en) |
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2018
- 2018-08-10 CN CN201821289724.2U patent/CN209113444U/en active Active
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