JP2000219218A - Seal check device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device in which a transferring efficiency of commodity is improved by efficiently performing seal checking of commodity and distribution. SOLUTION: A pair of conveyors 10, 20 are arranged at both sides of a transporting passage for a commodity X in such a way that the commodity X is held between opposing transporting surfaces and transported. There are provided springs 35, 35 for urging at least one conveyor to cause a space between both conveyors 10, 20 to be narrowed at the time when the conveyors 10, 20 hold the commodity X, and stoppers 36, 36 for controlling motion of the first conveyor 10 with the springs 35, 35 at the predetermined position so that the aforesaid space may not be narrower than the predetermined amount.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal check device for checking the seal of a packaged product and belongs to the field of product inspection technology.

[0002]

2. Description of the Related Art Generally, in a product in which contents such as snacks are packed in a packaging bag, it is found that there is a possibility that the contents may be quickly deteriorated because the packaging bag is not securely sealed. For this purpose, a seal check for inspecting the sealing state of the packaging bag is performed.

At that time, a conventional seal check of a product is performed by pressing a packaging bag from above to apply pressure. That is, when the product is properly sealed, the air or the like in the bag does not leak to the outside even when pressed, and the member for pressing the product as described above exerts a substantially constant reaction force from the product. Therefore, the stroke and the pressing force of the pressing member do not change.On the other hand, when the product is not properly sealed, air or the like in the bag is externally moved by the pressing force of the pressing member. This is performed by checking the change state of the stroke and the pressing force of the pressing member such that the packaging bag of the product leaks out and the stroke and the pressing force of the pressing member change.

[0004]

By the way, after the above-described seal check of the product, the product is often sorted into a normal product and a defective product according to the result of the seal check. At that time, a sorting device that allows normal products to pass through, and rejects defective products to the side is usually used.

As described above, in the related art, a device for performing a seal check and a device for sorting products are separately provided, and these devices are provided along with the transport route. There has been a problem that the transport distance of the product is long and the transport efficiency of the product is not good.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a device which solves the above-mentioned problems and improves the transport efficiency of a product by efficiently performing seal check and sorting of the product.

[0007]

That is, the present invention is characterized by having the following configuration in order to solve the above-mentioned problems.

First, an invention according to claim 1 (hereinafter referred to as "first invention") is a seal check device for checking the seal of a packaged product, which is provided on both sides of a product transport path. Having a pair of conveyors for nipping and transporting a product between opposing transport surfaces, and urging at least one of the conveyors so that the distance between the two conveyors becomes narrow when the pair of conveyors grip the product. And a movement restricting means for restricting the movement of the conveyor by the urging means at a predetermined position so that the interval does not become smaller than a predetermined amount.

According to a second aspect of the invention (hereinafter referred to as a "second invention"), in the first aspect, the biasing means has a biasing force adjusting function for adjusting the biasing force. It is characterized by having been done.

According to the first and second aspects of the invention, the following effects can be obtained.

First, according to the seal check device of the first invention, a pair of conveyors are provided on both sides of the product transport path instead of the product transport conveyor conventionally provided below the product transport path. Since the products are arranged so as to be conveyed while being sandwiched between the opposing conveying surfaces, a space is created below the products conveyed by the conveyor.

In addition, when the pair of conveyors sandwich the product, at least one of the conveyors is urged so as to reduce the interval between the two conveyors. In this case, the air and contents in the packaging bag do not leak to the outside, and are conveyed while being sandwiched by both conveyors. On the other hand, with respect to a product having a bad seal, air, contents and the like in the packaging bag leak to the outside, and the packaging bag shrinks. At this time, such a product falls down through the gap because the gap between the two conveyors is regulated by the movement regulating means so as not to be narrower than a predetermined amount. In other words, the seal state of the product is sorted into an appropriate normal product and an inappropriate defective product, so that the seal check of the product and the distribution of the product are performed simultaneously.

Thus, it is not necessary to separately provide a device for checking the seal of the product and a device for sorting the product, and the device for performing the seal check and the sorting 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.

Next, according to the seal check device of the second invention, the urging force when urging at least one of the conveyors so as to reduce the interval between the two conveyors when the pair of conveyors sandwich the product is reduced. Since it can be adjusted,
For example, when checking mainly a relatively large hole, the biasing force is adjusted to be relatively small, and when checking to a relatively small hole, the biasing force is adjusted to be relatively large. The urging force can be adjusted according to the purpose.

[0015]

Embodiments of the present invention will be described below.

As shown in FIGS. 1 and 2, a seal check device 1 according to an embodiment of the present invention includes an upstream conveyor C1 for conveying a product X packed with contents, and a shipping container (FIG. 1). (Not shown) and a downstream conveying conveyor C2 that conveys to a boxing station for boxing, and the product X conveyed from the upstream conveying conveyor C1.
After a seal check is performed while holding the sheet, only normal products that have been properly sealed are conveyed to the downstream conveyor C2.

The seal check device 1 includes first and second conveyors 10, 20 each formed by winding a conveyor belt 11, 21 around a pair of pulleys 12, 12, 22, 22.
The conveyors 10 and 20 are provided on both sides of the transport path of the product X so that the transport surfaces face each other.

As shown in FIG. 2, a pair of pulleys 12, 1
2, 22, 22 are support members 13, 13, 23, respectively.
23, the first and second conveyors 10,
Reference numeral 20 denotes mounting plates 15, 2 via brackets 14, 14, 24, 24 mounted on the upper support members 13, 23.
5 respectively. The mounting plate 25 on the second conveyor 20 side is fixed on the upper surface of the main body frame 2 and the mounting plate 15 on the first conveyor 10 side is
When the product X is sandwiched between the two conveyors 10 and 20, the first conveyor 10 is moved in the forward direction (the second conveyor 20 side).
To the conveyor moving mechanism 30 that urges the conveyor.

The conveyor moving mechanism 30 includes a support plate 31 opposed to the mounting plate 15, slide shafts 32, 32 provided between the support plate 31 and the mounting plate 15, and a plurality of slide shafts 32, 32. Externally fitted, the shaft 3
A mounting member 33 having elongated holes 33a, 33a extending in the direction in which the shafts 32, 32 are mounted;
The urging force adjusting bolts 34, 34 screwed to the screw portions 32a, 32a provided on the fifth side, and the urging force adjusting bolts 3
Springs 35, 35 fitted between the shafts 32, 32 in a contracted state between the mounting members 33,
The shafts 32, 32 have stoppers 36, 36 screwed to screw portions 32b, 32b provided on the support plate 31 side.

The mounting member 33 includes the elongated holes 33a, 33a.
1, and is mounted on the upper surface of the main body frame 2 by bolts 37, 37 via screw holes (not shown) on the upper surface of the main body frame 2, and the mounting member 33 is moved in the direction of arrow A in FIG. Thus, 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.

The springs 35, 35 urge the first conveyor 10 in the forward direction via the urging force adjusting bolts 34, 34. Also, the urging force adjusting bolt 3
4 and 34 adjust the contraction length of the springs 35 and 35, and the first and second conveyors 10 and 20 use
The urging force of the first conveyor 10 on the product X when the product is sandwiched can be adjusted.

The stoppers 36, 36 are provided with springs 35,
The movement of the first conveyor 10 in the forward direction by the urging force of the first conveyor 10 is restricted at the illustrated position. this is,
Before the first and second conveyors 10 and 20 hold the product X, the first and second conveyors 10 and 20 are separated by a predetermined amount from the compression limit width of a normal product.
Is set, and if the product X sandwiched between both conveyors 10 and 20 is defective, the first conveyor 10
Is retracted by the above-mentioned predetermined amount, and then moves forward again when air or the like leaks to the outside. By stopping the advance at the position shown in the drawing, the product X is released from the urging by the first conveyor 10. And fall down.

Next, the operation of the present embodiment will be described.

When the product X packed with the contents is conveyed by the upstream conveyor C1, the first and second conveyors 1
0 and 20 hold the product X.

In this case, the first and second conveyors 10, 2
0, the first and second conveyors 10, 2 before holding the product X
Since the position of the first conveyor 10 is set such that the interval of 0 is narrower by a predetermined amount than the compression limit width of the normal product, the first conveyor 10 is pushed by the product X and retreats by the predetermined amount. At that time, the product X is a spring 35, 35
However, when the product X is a normal product, the air and the like in the bag do not leak to the outside when the product X is a normal product. The force exerted between the two conveyors 10 and 20 acts and reacts, so that the product X is held by the two conveyors 10 and 20. Therefore, the normal product is transported to the downstream transport conveyor C2.

On the other hand, when the product X is a defective product, the first and second conveyors 10, 20 hold the product X and are pushed by the product X to temporarily stop the product, as in the case of the normal product. 1 Conveyor 10 retreats, but product X is spring 3
The air and the like in the bag leak to the outside by being urged from the first conveyor 10 by the urging forces of 5, 35. Therefore, the first
The conveyor 10 advances while discharging air and the like from the inside of the bag to the outside, and the first conveyor 10 stops at the stop position set by the stoppers 36, 36. Here, both conveyors 1
Even if it continues to be urged so that the interval between 0 and 20 becomes narrow, it does not fall downward. Can be dropped.

As described above, although the conveyor for transporting the product X is conventionally provided below the transport route of the product X, in the present embodiment, a pair of first and second conveyors are provided on both sides of the transport route of the product X. Since the two conveyors 10 and 20 are provided and goods are sandwiched and conveyed on their opposing surfaces, a space is created below the goods X held by the two conveyors 10 and 20. When the product X is sandwiched between the conveyors 10 and 20, the first
Since the conveyor 10 is pressed against the product X, the normal product is held by both the conveyors 10 and 20, while the defective product falls down, and thus the product X is sorted together with the seal check of the product X. It can be performed.

Therefore, it is not necessary to separately provide a device for performing the seal check and a device for sorting the product X, thereby realizing a device capable of simultaneously performing the seal check and the sorting of the product X. As a result, the product X is realized. Therefore, the length of the transfer path can be shortened, and the transfer efficiency of the product can be improved.

Further, since the urging force adjusting bolts 34, 34 for adjusting the urging force of the first conveyor 10 on the product X when the product X is sandwiched between the first and second conveyors 10, 20 are provided, for example, Mainly when you want to check a relatively large hole, even if the biasing force is relatively small, air etc. leaks sufficiently from the hole, so adjust the biasing force to be relatively small, and if you want to check even a relatively small hole If the urging force is not large, air or the like will not leak sufficiently from the hole, so that the urging force can be adjusted according to the purpose, such as adjusting the urging force to be relatively large.

[0030]

According to the seal check device of the first invention, a pair of conveyors are provided on both sides of the product transport path instead of the product transport conveyor conventionally provided below the product transport path. Since the products are arranged so as to be conveyed while being sandwiched between the opposing conveying surfaces, a space is created below the products conveyed by the conveyor.

In addition, when the pair of conveyors sandwiches the product, at least one of the conveyors is urged so as to reduce the distance between the two conveyors. In this case, the air and contents in the packaging bag do not leak to the outside, and are conveyed while being sandwiched by both conveyors. On the other hand, with respect to a product having a bad seal, air, contents and the like in the packaging bag leak to the outside, and the packaging bag shrinks. At this time, such a product does not fall downward even if it is continuously urged to reduce the interval between the two conveyors. By restricting the movement of
The product will fall downward. In other words, the seal state of the product is sorted into an appropriate normal product and an inappropriate defective product, so that the seal check of the product and the distribution of the product are performed simultaneously.

As a result, it is not necessary to separately provide a device for performing a seal check of a product and a device for distributing the product, and a device for performing a seal check and 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.

Next, according to the seal check device of the second invention, the urging force when urging at least one of the conveyors so as to reduce the interval between the two conveyors when the pair of conveyors sandwich the product is reduced. Since it can be adjusted,
For example, when checking mainly a relatively large hole, the biasing force is adjusted to be relatively small, and when checking to a relatively small hole, the biasing force is adjusted to be relatively large. The urging force can be adjusted according to the purpose.

[Brief description of the drawings]

FIG. 1 is an overall front view of a seal check device according to an embodiment of the present invention.

FIG. 2 is an enlarged plan view of a main part in the same manner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seal check apparatus 10 1st conveyor 20 2nd conveyor 30 Conveyor moving mechanism 34 Energizing force adjustment bolt (energizing force adjusting means) 35 Spring (energizing means) 36 Stopper (movement restricting means)

Claims (2)

[Claims] 1. A seal check device for performing a seal check of a packaged product, comprising a pair of conveyors disposed on both sides of a product transfer path for pinching and transferring the product between opposing transfer surfaces. And a biasing means for biasing at least one of the conveyors so that the distance between the two conveyors becomes narrower when the pair of conveyors sandwich the product, and the urging means so that the distance does not become narrower than a predetermined amount. And a movement restricting means for restricting the movement of the conveyor by the urging means at a predetermined position. 2. The seal check device according to claim 1, wherein the urging means has an urging force adjusting function for adjusting the urging force.