JP4302807B2 - Product inspection equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a product inspection apparatus for inspecting a packaged product, and belongs to the field of product inspection technology.
[0002]
[Prior art]
In general, products packed with contents such as snacks in packaging bags are used to find items that may deteriorate quickly because the packaging bags are not properly sealed. A seal check for inspecting the seal state and a weight check for inspecting whether the weight of the enclosed contents or the like is within a predetermined error range are performed.
[0003]
At that time, the conventional product seal check is performed by pressing the packaging bag from above and applying pressure. That is, when the product is properly sealed, the air in the bag does not leak to the outside even when pressed, and the pressing member that presses the product as described above has a substantially constant reaction force from the product. Therefore, when the product is not properly sealed, the air in the bag leaks to the outside due to the pressing force. This is done by checking the change state of the stroke and the pressing force of the pressing member such that the packaging bag of the product is deflated and the stroke and the pressing force of the pressing member are changed.
[0004]
In addition, the weight check of the product is performed by, for example, weighing the product conveyed by the conveyor on the weighing conveyor equipped with a weighing function while conveying it, and checking whether the measured value is appropriate as described above. It is done by inspection.
[0005]
[Problems to be solved by the invention]
By the way, after the above-described product seal check or product weight check, products are often assigned to normal products and defective products according to the results of these checks. At that time, a distribution device that normally passes the product conveyance path for normal products and excludes defective products to the side of the product conveyance route is usually used.
[0006]
As described above, conventionally, a device for performing a seal check or a device for measuring a weight and a device for distributing a product are provided separately, and these devices are provided in the transport path. That is, there has been a problem that the conveyance distance of the product becomes long and the conveyance efficiency of the product is not good.
[0007]
Accordingly, the present invention provides a product inspection device that improves the product conveyance efficiency by eliminating the above-described problems and efficiently performing product seal check or product weight check and product distribution. Is an issue.
[0008]
[Means for Solving the Problems]
That is, the present invention is characterized in that it is configured as follows in order to solve the above problems.
[0009]
First, an invention according to claim 1 (hereinafter referred to as “first invention”) is a product inspection apparatus for inspecting a packaged product, and is disposed on both sides of a product transport path so as to face each other. It has a pair of conveyors that sandwich and convey products between the faces, and is attached to the pair of conveyors, and detects the load in the vertical direction, thereby reducing the weight of the pair of conveyors and the products sandwiched between them. A weight measuring load detecting means for measuring, a determining means for determining whether or not the weight of the product is appropriate based on a signal of the detecting means, and an inappropriate weight of the product by the determining means; when it is determined to be, that the moving means for dropping the moved allowed by the product which is sandwiched the two conveyors so that the distance between the two conveyors at least one conveyor is wider is provided And butterflies.
[0010]
Next, an invention according to claim 2 (hereinafter referred to as “second invention”) is arranged on both sides of a product conveyance path in a product inspection device for inspecting a packaged product, and is opposed to each other. It has a pair of conveyors that sandwich and convey the product between the conveyance surfaces, and is attached to the pair of conveyors, and detects the horizontal load, thereby detecting the horizontal direction from the product sandwiched between the pair of conveyors. A load detecting means for checking the seal that receives the reaction force of the product and checking the seal state of the product, and a determination for determining whether or not the product is properly sealed based on a signal from the detection means and means, when it is determined in which the product is improperly sealed by the determination means, by moving at least one of the conveyor so that the distance between the conveyor widens, the both conveyor Characterized in that the moving means for dropping the product which is held is provided.
[0011]
According to the first and second inventions, the following actions can be obtained.
[0012]
First, according to the commodity inspection apparatus of the first invention, instead of the commodity conveying conveyor that has conventionally been provided below the commodity conveying path, a pair of conveyors are provided on both sides of the commodity conveying path. Since the product is sandwiched and transported by the transport surfaces facing each other, a space is generated below the product transported by the conveyor.
[0013]
In addition, when the pair of conveyors sandwiches the product, the weight of the product is measured. When the weight of the product is inappropriate, at least one of the conveyors has a wide interval between the two conveyors. As a result, the product with an inappropriate weight falls downward. When the weight of the product is appropriate, the product is transported while the product is held between the conveyors. In other words, the weight of the product is distributed between a proper normal product and an inappropriate defective product, and therefore the product can be distributed together with the product weight check.
[0014]
As a result, it is not necessary to separately provide a device for checking the weight of the product and a device for distributing the product, and an apparatus for checking the weight of the product and distributing the product is realized. As a result, the length of the product transport path is shortened, and the product transport efficiency can be improved.
[0015]
Next, according to the product inspection apparatus of the second invention, as in the first invention, instead of the product transport conveyor conventionally provided below the product transport path, the product inspection apparatus is provided on both sides of the product transport path. Since a pair of conveyors are provided and disposed so as to sandwich and convey the products between the opposed conveyance surfaces, a space is created below the products conveyed by the conveyors.
[0016]
In addition, when the pair of conveyors sandwiches the product, the seal state of the product is checked. When the product is improperly sealed, at least one conveyor is placed between the two conveyors. Since it moves so that a space | interval may become wide, the goods with an improper seal state will fall below. Further, when the product is properly sealed, the product is conveyed while the product is held between the conveyors. That is, the product seal state is sorted into a proper normal product and an improper defective product, so that the product can be sorted together with the product seal check.
[0017]
Accordingly, it is not necessary to separately provide a device for checking the seal state of the product and a device for distributing the product, and an apparatus for performing the seal check of the product and the distribution of the product is realized. As a result, the length of the product transport path is shortened, and the product transport efficiency can be improved.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
[0019]
As shown in FIGS. 1 and 2, the commodity inspection apparatus 1 according to the embodiment of the present invention includes an upstream conveyance conveyor C <b> 1 that conveys a commodity packed with contents and a shipping container (not shown). It is arranged between the downstream conveyor C2 that transports to the boxing station for boxing, and after performing the weight check and the seal check while holding the product X transported from the upstream conveyor C1, the seal is appropriate And a normal product having a proper weight is conveyed to the downstream conveyor C2.
[0020]
The commodity inspection apparatus 1 includes first and second conveyors 10 and 20 each having a conveyor belt 11 and 21 wound around a pair of pulleys 12, 12, 22 and 22. Are provided on both sides of the conveyance path of the product X so that the conveyance surfaces face each other.
[0021]
As shown in FIG. 2, the first and second conveyors 10 and 20 are supported by substantially U-shaped support members 13 and 23, and when the product X is sandwiched between the two conveyors 10 and 20, the belt 11 , 21 are received by the receiving portions 13a, 23a of the support members 13, 23.
[0022]
Inside the first and second conveyors 10 and 20, seal check load cells 14 and 24 and weight detection load cells 15 and 25 are integrally provided, and one end of the unit is attached to the mounting members 16 and 26, respectively. Are fixed to the receiving portions 13a and 23a of the support members 13 and 23, and the other ends are attached to the mounting plates 18 and 28 via L-shaped brackets 17 and 27, respectively.
[0023]
The mounting plate 28 on the second conveyor 20 side is fixed on the upper surface of the main body frame 2, and the mounting plate 18 on the first conveyor 10 side is first when the product X is sandwiched between the two conveyors 10 and 20. The conveyor 10 is connected to a conveyor moving mechanism 30 that moves the conveyor 10 in the direction of arrow A (forward and backward direction).
[0024]
When the first and second conveyors 10 and 20 sandwich the product X, the weight detection load cells 15 and 25 are directed from the front surface to the back surface in FIG. A load in the direction is applied, and the weight of the product X is detected by being distorted by this load. Further, when the first and second conveyors 10 and 20 sandwich the product X, the seal check load cells 14 and 24 are connected to the connecting ends of the mounting members 16 and 26 by the reaction force from the product X as shown in FIG. A load in the direction of arrows A and C is applied, and the seal state is detected by distortion due to this load. In other words, if the product is poorly sealed, air in the bag leaks outside through the hole in the packaging bag, and the load in the direction of arrows a and c in FIG. Therefore, if the distortion of the seal check load cells 14, 24 remains constant, it is determined as a normal product, and if the distortion changes, the distortion does not occur. By determining that the product is non-defective, the seal state of the product X is detected.
[0025]
The support members 13, 23 are provided with openings 13b, 23b, respectively, so that the support members 13, 23 do not interfere with the connection between the load cells 14, 15, 24, 25 and the L-shaped brackets 17, 27. ing.
[0026]
The conveyor moving mechanism 30 includes a support plate 31 disposed opposite to the mounting plate 18, slide shafts 32 and 32 laid on the support plate 31 and the mounting plate 18, and external fitting on the slide shafts 32 and 32. Attaching members 33 having elongated holes 33a, 33a extending in the direction of installation of the shafts 32, 32 and screw portions 32a, 32a provided on the first conveyor 10 side of the shafts 32, 32 are attached. The force adjusting bolts 34, 34, the springs 35, 35 inserted into the shafts 32, 32 in a contracted state between the biasing force adjusting bolts 34, 34 and the mounting member 33, and the support plates for the shafts 32, 32 And stoppers 36 and 36 screwed into screw portions 32b and 32b provided on the 31 side.
[0027]
The attachment member 33 is adapted to be attached to the upper surface of the main body frame 2 by bolts 37, 37 through the elongated holes 33a, 33a and screw holes (not shown) on the upper surface of the main body frame 2. By moving in the direction of arrow D in FIG. 1, the initial position of the conveyor moving mechanism 30 and thus the first conveyor 10 can be changed according to the size of the product X.
[0028]
The springs 35, 35 are configured to urge the first conveyor 10 in the forward direction via the urging force adjusting bolts 34, 34. The urging force adjusting bolts 34 and 34 are for adjusting the contraction lengths of the springs 35 and 35, and the urging force by the first conveyor 10 when the product X is sandwiched between the first and second conveyors 10 and 20. Can be adjusted.
[0029]
The stoppers 36 and 36 restrict the movement of the first conveyor 10 in the forward direction by the urging force of the springs 35 and 35 at the illustrated position. This is because the interval between the first and second conveyors 10 and 20 before the first and second conveyors 10 and 20 sandwich the product X is narrowed by a predetermined amount from the compression limit width of the normal product. When the position X is set to 10 and the product X sandwiched between the two conveyors 10 and 20 is a defective product, after the first conveyor 10 moves backward by the predetermined amount, air etc. leaks to the outside again. Although it moves forward, by stopping this forward movement at the position shown in the figure, the product X is released from the urging force by the first conveyor 10 and falls downward.
[0030]
In addition to the above configuration, in the present embodiment, a retraction cylinder 38 for retreating the first conveyor 10 is provided inside the mounting member 33.
[0031]
The cylinder 38 is supplied with a predetermined hydraulic pressure or air pressure from a hydraulic supply source or a pneumatic supply source (not shown) via a supply path 39 to the hydraulic chamber or the pneumatic chamber 38a, so that the cylinder rod 40 moves rearward. Thus, the first conveyor 10 is moved backward via the slide shafts 32 and 32 and the support plate 31.
[0032]
Next, the operation of the present embodiment will be described.
[0033]
When the product X packed in contents is conveyed by the upstream-side conveyance conveyor C1, the first and second conveyors 10 and 20 hold the product X therebetween.
[0034]
Here, the position of the first conveyor 10 is such that the distance between the two conveyors 10 and 20 before the first and second conveyors 10 and 20 sandwich the product X is narrower by a predetermined amount than the compression limit width of the normal product. Is set, the first conveyor 10 is pushed by the product X and moves backward by a predetermined amount. At that time, the product X is urged by the first conveyor 10 and exerts a reaction force on the first and second conveyors 10 and 20.
[0035]
Therefore, the load cells 14, 15, 24, and 25 are distorted in the direction from the front surface to the back surface in FIG. 2 and in the direction of the arrow A in FIG. 2 according to the weight of the product X. Of these distortions, the weight of the product X is detected based on the distortion of the weight check load cells 15 and 25 in the direction from the front surface to the back surface in FIG. The seal state of the product X is detected by the distortion in the direction. The distortions of the weight check load cells 15 and 25 and the seal check load cells 14 and 24 hardly change, that is, when the product X is properly sealed and the weight is a normal product. Does not actuate the retreat cylinder 38 and keeps the product X on both conveyors 10 and 20 and conveys it to the downstream conveyor C2.
[0036]
On the other hand, when at least one of the distortions of the weight check load cells 15 and 25 and the seal check load cells 14 and 24 changes, that is, when at least one of the seal state and the weight of the product X is an inappropriate defective product. Operates the retreat cylinder 38 to retreat the first conveyor 10. Thereby, the product X is released from the nipping by the first and second conveyors 10 and 20 and falls downward.
[0037]
As described above, conventionally, the conveyor for conveying the product is provided below the conveyance path of the product X. However, in the present embodiment, a pair of first and second conveyors 10 are provided on both sides of the conveyance path of the product X. , 20 are provided so that the products are sandwiched and conveyed between the opposing surfaces, and the weight detection load cells 15, 25 and the seal check load cell 14 are provided inside the first and second conveyors 10, 20, respectively. , 24 is provided, a space is created below the product X conveyed by the first and second conveyors 10, 20. When the product X is a defective product, the first conveyor 10 is separated from the product X by the cylinder 38, so that the properly sealed normal product is held by the first and second conveyors 10 and 20. Defective products that are not properly sealed are dropped downward, and the product X is distributed into normal products and defective products. Therefore, the above distribution can be performed together with the weight check and the seal check of the product X.
[0038]
This eliminates the need to separately provide a device for checking the weight of a product, a device for performing a product seal check, and a device for distributing products, and a device for performing a product weight check, seal check and product distribution at the same time. Will be realized. As a result, the length of the product transport path is shortened, and the product transport efficiency can be improved.
[0039]
【The invention's effect】
According to the commodity inspection apparatus of the first invention, instead of the commodity conveying conveyor that has conventionally been provided below the commodity conveying path, a pair of conveyors are provided on both sides of the commodity conveying path, and the opposite of them. Since the product is sandwiched and transported on the transport surface to be transported, a space is created below the product transported by the conveyor.
[0040]
In addition, when the pair of conveyors sandwiches the product, the weight of the product is measured. When the weight of the product is inappropriate, at least one of the conveyors has a wide interval between the two conveyors. As a result, the product with an inappropriate weight falls downward. When the weight of the product is appropriate, the product is transported while the product is held between the conveyors. In other words, the weight of the product is distributed between a proper normal product and an inappropriate defective product, and therefore the product can be distributed together with the product weight check.
[0041]
As a result, it is not necessary to separately provide a device for checking the weight of the product and a device for distributing the product, and an apparatus for checking the weight of the product and distributing the product is realized. As a result, the length of the product transport path is shortened, and the product transport efficiency can be improved.
[0042]
Next, according to the product inspection apparatus of the second invention, as in the first invention, instead of the product transport conveyor conventionally provided below the product transport path, the product inspection apparatus is provided on both sides of the product transport path. Since a pair of conveyors are provided and disposed so as to sandwich and convey the products between the opposed conveyance surfaces, a space is created below the products conveyed by the conveyors.
[0043]
In addition, when the pair of conveyors sandwiches the product, the seal state of the product is checked. When the product is improperly sealed, at least one conveyor is placed between the two conveyors. Since it moves so that a space | interval may become wide, the goods with an improper seal state will fall below. Further, when the product is properly sealed, the product is conveyed while the product is held between the conveyors. That is, the product seal state is sorted into a proper normal product and an improper defective product, so that the product can be sorted together with the product seal check.
[0044]
Accordingly, it is not necessary to separately provide a device for checking the seal state of the product and a device for distributing the product, and an apparatus for performing the seal check of the product and the distribution of the product is realized. As a result, the length of the product transport path is shortened, and the product transport efficiency can be improved.
[Brief description of the drawings]
FIG. 1 is an overall front view of a product inspection apparatus according to an embodiment of the present invention.
FIG. 2 is an enlarged plan view of the main part of the same.
[Explanation of symbols]
1 commodity inspection device 10 first conveyor 14, 24 load cell for seal check (load detection means for seal check)
15, 25 Load cell for weight detection (load detection means for weight measurement)
20 Second conveyor 30 Conveyor moving mechanism 34 Energizing force adjusting bolt 35 Spring 36 Stopper 38 Cylinder (driving means)

Claims (2)

A product inspection device for inspecting a packaged product, having a pair of conveyors that are disposed on both sides of a product conveyance path and convey the product between opposed conveyance surfaces, and the pair of conveyors A weight detecting load detecting means for measuring the weight of the pair of conveyors and the product sandwiched between the pair of conveyors by detecting the load in the vertical direction attached to the conveyor, and the product based on the signal of the detecting means Determining means for determining whether or not the weight of the product is appropriate, and when the determining means determines that the weight of the product is inappropriate, the interval between at least one conveyor is set between the two conveyors. The product inspection apparatus is provided with a moving means for moving the product so that the product is widened and dropping the product sandwiched between the two conveyors . A product inspection device for inspecting a packaged product, having a pair of conveyors that are disposed on both sides of a product conveyance path and convey the product between opposed conveyance surfaces, and the pair of conveyors Load detection for seal check that is attached to a conveyor and detects the load in the horizontal direction to check the seal state of the product in response to the horizontal clamping reaction force from the product sandwiched between the pair of conveyors. Means for determining whether or not the product is properly sealed based on the signal of the detection means, and determining that the product is improperly sealed by the determination means when it is, by moving at least one of the conveyor so that the distance between the conveyor is widened, and the moving means is provided for dropping the products sandwiched the two conveyors Commodity inspection and wherein the door.

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