JPH0213372Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is applicable to conveying devices in automatic weighing devices, weighing and pricing devices, etc. that weigh various products during transportation, or to weigh and value various products during transportation, as well as in ordinary transportation This relates to a conveying device that only performs the following operations, and is configured to be suitable for conveying round bar-shaped articles.

(Prior art) For example, in a packing center for products for supermarkets, there is a weighing operation in which the weight of the product is measured while it is transported, and a weight value obtained by the weighing operation, a preset unit price, and a tare. A weighing and pricing device is in use that continuously performs a pricing operation of calculating the price of a product based on its weight and attaching a label on which the price is printed to the product. Further, in production lines for various products, automatic weighing devices are used to measure the weight of each product while transporting it to inspect the weight of the product.

However, in this type of device, it is important that the posture of the product be stable during weighing to ensure accurate weighing, and in the case of weighing and pricing devices,
It is necessary to correctly set the position of the product when attaching the label so that the label is attached to each product at a constant position. However, if the product being handled is a round bar-shaped product that tends to roll, such as ham or sausage, it may roll during weighing, making the operation of the weighing machine unstable, or the side frame of the conveying device may roll. Otherwise, the product may come in contact with the label, causing a measurement error, and the position of the product may shift during labeling, causing the label to be affixed at a different position from a predetermined position, or an erroneous affixation may occur.

Therefore, conventionally, the following countermeasures have been taken for the conveyance device included in this type of device.

That is, as shown in FIG. 7, a pair of rollers 1,
In a belt conveyor-type conveying device in which an endless flat belt 2 is wound between 1 and 1, a top plate 3 that supports an upper running part 2a of the belt 2 that conveys products from below extends in the conveying direction and Both sides 3a, 3a
By providing a concave portion 3b having an inverted triangular cross section that slopes downward toward the center, the upper running portion 2a of the belt 2 is guided downward along the concave portion 3b by its own elastic force and the weight of the product. This curved recess 2b is configured to hold a round bar-shaped product. However, in the case of this conveyance device, _product Since the rate is not constant, product X ₁ becomes even more unstable. In particular, in the case of product X ₂ with a small diameter, the curvature of belt 2 is relatively small (curvature radius is large), so it is not possible to effectively prevent product X ₂ from rolling. . Furthermore, as shown in Fig. 8, in order to reliably prevent rolling even for small-diameter products, it is conceivable to make the recess 3b' of the top plate 3' deep. As shown in the figure, the product X is deeply sunk into the curved recess 2b' of the belt 2'. Therefore, when the passing of the product X is detected by a translucent photo sensor consisting of a light emitter 4a and a light receiver 4b arranged facing each other on both sides, the product X will pass below the optical path. It becomes undetectable.

Further, as in the conveying device shown in FIG. 9, a relatively narrow flat belt 6 and two rope belts 7, 7 disposed on both sides of the belt 6 are wound between a pair of rollers 5, 5. However, there is one in which a product is held between both rope belts 7, 7. However, even with this conveying device, both the rope belts 7, 7
Since the distance between the two rope belts is constant, if this distance is _too wide, both rope belts 7 and 7
If the gap is narrow, large-diameter products may roll between the
In the case of X ₁ , there is a problem in that the product X ₂ rolls sideways over any of the rope belts 7 . All of the above-mentioned conveying apparatuses have the disadvantage that it is difficult to convey goods with a flat bottom surface well, and in fact, they can only be used for conveying round bar-shaped articles.

(Purpose of the invention) The present invention addresses the above-mentioned actual situation regarding conveyance devices, especially conveyance devices for conveying round bar-shaped articles. To always transport an article in a stable state regardless of its diameter.
This stabilizes the operation of the weighing machine or prevents the article from coming into contact with a side frame, etc., when weighing an article while it is being conveyed by the conveyance device in a weighing and pricing device, for example. In addition, when a label is attached to an article while being transported by the conveyance device, the label is always attached at a predetermined position. The purpose is to

(Structure of the invention) The conveying device according to the invention is characterized by having the following structure in order to achieve the above object.

That is, in a conveyance device in which a flat belt is wound between a pair of rollers, and the upper running part of the belt is supported from below by a top plate, the flat belt is conveyed to the widthwise center of the top plate. A recess is provided that extends over the entire length of the conveyance direction and is inclined so that both side surfaces become lower toward the center. The mutually opposing sides, ie, the right side of the left belt and the left side of the right belt, are configured to be inclined along both sides of the recess in the top plate. According to such a configuration, when a round bar-shaped article is placed in the middle between the left and right belts with its longitudinal direction facing the conveying direction, the opposing sides of both belts become lower toward the center. By tilting, the lower circumferential surface of the product is always supported at two points from both sides, regardless of its diameter.
In addition, since the belt is separated into left and right sides, it always slopes at a substantially constant angle along both sides of the concave portion of the top plate, thereby stabilizing the posture of the article and reliably preventing it from rolling sideways. That will happen. Since only the opposing sides of the left and right belts are tilted and the other parts are held horizontally, it is possible to handle items with flat bottoms in the same way as with normal flat belt conveyor devices. Therefore, it can be transported well.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. This embodiment relates to a conveyance device used in a weighing and pricing apparatus, and first, the general configuration of the weighing and pricing apparatus as a whole will be explained.

As shown in FIGS. 1 and 2, a weighing and pricing device 10
In this system, a take-in conveyor 20, a weighing conveyor 30, and a pasting conveyor 60 are arranged in a line on a pedestal 11, and above the pasting conveyor 60, a value attaching device 70 which is an integrated label printer 71 and a label pasting machine 72 is installed. It is said that the configuration is as follows. Further, the weighing conveyor 30 is assembled to a weighing machine 80 so that the weight of the conveyor 30 and the weight of the products on the conveyor 30 are loaded onto the weighing machine 80. Since the weight of 30 is constant, the weighing machine 80
The weight of the product on the weighing conveyor 30 is measured by the weighing conveyor 30. Then, the price etc. calculated from this weight value, the unit price of the product, and the tare weight are sent to the label printer 71 in the pricing device 70.
The label is printed on a label by the labeling machine 72, and after being delivered to a labeling machine 72, the labeling machine 72 affixes the lower part of the label to the product being conveyed by the affixing conveyor 60. . In this embodiment, an input conveyor 90 is arranged upstream of the intake conveyor 20 in the weighing and pricing device 10.

Next, the configurations of the intake conveyor 20, weighing conveyor 30, and pasting conveyor 60 will be explained using the weighing conveyor 30 as an example.

As shown in FIGS. 3 to 5, the weighing conveyor 30 has left and right frames 32, 33 connected by a plurality of connecting rods 31...31, and both frames 32, 33.
A drive roller 34 and a driven roller 35 are respectively pivotally supported between the front and rear ends of the rollers 34 and 3.
The main elements are a conveyor belt 36 wound between two frames 32 and a motor 38 which is attached to one frame 32 and rotates the drive roller 34 via a transmission belt 37. The belt 36 is made to run in the A direction. In addition, the frames 32, 33
A top plate 39 is installed above the connecting rods 31 . This is designed to prevent the part from bending downward, especially during product transportation.

However, the conveyor belt 36 is connected to the first belt 40 on the left side (upper side in FIG. 3) along the conveyance direction.
and a second belt 41 on the right side (also on the lower side). Correspondingly, the top plate 39 is also divided into left and right parts, including a first top plate 42 on the left side that supports the upper running portion 40' of the first belt 40;
The second top plate 43 on the right side supports the upper running portion 41' of the second belt 41, and both top plates 42, 4
3, that is, the right side 42a of the first top plate 42 and the left side 4 of the second top plate 43.
A gap B of a constant width is provided between the top plate 39 and the top plate 3a, and both sides 42a and 43a are inclined in a direction in which the side of the gap B becomes lower. A recess 44 having an inclined surface that becomes lower toward the center is provided over the entire length in the conveying direction. The right side portion 40a of the first belt 40 and the left side portion 41a of the second belt 41 protrude above both side surfaces 42a and 43a of the recess 44. Here, the frames 32, 33
At the center of the upper surface of the connecting rods 31...31 that connect the
In order to avoid interference with the inclined side portions 42a, 43a of the drive roller 34 and the driven roller 35, the drive roller 34 and the driven roller 35 are provided with hollow portions 34a, .
35a is formed.

Further, in this embodiment, the driven roller 35
Both ends of the support shaft 45 that supports the left and right frames 3
2 and 33 via longitudinal position adjustment mechanisms 46 and 46, and thereby the first and second belts 4
The tension of 0.41 can be adjusted. Further, a tension roller support member 47 is installed between the frames 32 and 33 at a position near the driven roller 35, and on the member 47, one end is connected to a rod end 48, 48, and the other end is connected to a bracket 49, 49. First and second tension rollers 50 and 51 are respectively pivotally supported. These tension rollers 50, 51 are the lower running portions 40'' of the first and second belts 40, 41, respectively.
By pushing up the belts 41'', the required tension is applied to these belts 40, 41.

Although a detailed explanation will be omitted, as shown in FIG.
0, similarly to the weighing conveyor 30, the conveyor belts 21, 61 are connected to the left and right first and second belts 2.
2, 23 and 62, 63, and recesses 24, 64 are provided in the center of the top plate along the conveyance direction with both side surfaces sloped downward toward the center, and the recess 24 , 64 on both sides of the first and second belts 22, 23 and 62, 6.
The respective side portions of No. 3 are in a state of being extended.

Next, the operation of the above embodiment will be explained.

When a product is supplied onto the input conveyor 90, this product is transferred from the input conveyor 90 to the weighing and pricing device 1.
It is delivered to the intake conveyor 20 at 0, and is further supplied to the weighing conveyor 30, and its weight is measured by the weighing machine 80 while it is on the weighing conveyor 30. This measured weight value is sent to a control device (not shown), and the price of the product is calculated using the unit price, tare weight, etc. registered in advance in the control device. The numbers are sent to a label printer 71 at 70, and the printer 71 prints these numbers on a label. Then, this label is delivered to the label pasting machine 72. Meanwhile, the product on the weighing conveyor 30 is delivered to the pasting conveyor 60, and when passing below the label pasting machine 72, the product is passed by the pasting machine 72. The above label is attached. In this way, the products supplied to the input conveyor 90 are weighed and priced one after another.

However, when the product handled is a round bar-shaped product such as ham or sausage, the product rolls during the weighing and pricing process as described above, and for example, when weighing on the weighing conveyor 30, the weighing and pricing device may 10
Contacting the guide members (see Figures 1 and 2) 12, 12 provided on both sides of the meter and causing a measurement error,
Alternatively, when the label is pasted on the pasting conveyor 60, a problem such as the pasting position is shifted may occur.

However, the weighing and pricing device 10 configured as described above
According to the above, such problems can be reliably prevented in the following manner. That is, to explain the weighing conveyor 30 with reference to FIG. 6, when a round bar-shaped product
Mutually opposing sides 40a of the belts 40, 41,
41a is a recess 4 provided in the top plate 39 below it.
4, the sides 40a and 41a of the recessed portion 44 are bent by the weight of the product X.
43a in the same direction. Therefore, the product
It is supported from both sides at two points y, and
In that case, since the belts are separated into left and right sides, the opposing sides 4 of both belts 40 and 41
0a, 41a are both sides 42a, 4 of the concave portion of the top plate 39
3a, and the positions of the support parts x and y on both sides of the product will be done. Such a state can always be obtained within a certain limit regardless of the diameter of the product X, and the rolling of the product This prevents the product from sinking as shown in FIG. 8. Therefore, the photo sensor 1 for determining the measurement timing
3 (see Figures 1 and 2) will not result in a situation where it becomes impossible to detect the product. Further, the same effect can be obtained with the intake conveyor 20 and the pasting conveyor 60 having the same configuration as the weighing conveyor 30.

In this way, when a round bar-shaped product is conveyed on each conveyor 20, 30, 60 in the weighing and pricing device 10, rolling of the product is reliably prevented. Therefore, when the weight is measured by the weighing machine 80 when passing over the weighing conveyor 30, the operation of the weighing machine 80 is stabilized, and the product is prevented from coming into contact with the guide members 12, 12, etc.
The weight can be measured accurately without any measurement errors. Further, when a label is attached to a product by the label attaching machine 72 during transportation by the attaching conveyor 60, the horizontal position of the product with respect to the conveying direction is stabilized, so that the label is always attached to a predetermined position of the product. . According to the above configuration, the first and second belts 40, 41 have side portions 40a, 40 facing each other.
Only the top plate 1a is tiltable, and the other parts are the top plate 4.
2 and 43, the concave portion 44 of the top plate 39 can be used even for articles with a flat bottom.
As long as the width is wider than the width of

In this embodiment, the top plate 39 also has a first top plate 42 and a second top plate on the left and right in correspondence with the conveyor belt 36.
Although the top plate 43 is divided into the top plate 43, the top plate may not be divided, but may have a structure in which a concave portion with sloped sides on both sides is provided in the center of a single top plate along the conveyance direction.

Furthermore, although this embodiment is applied to a take-in conveyor, a weighing conveyor, and a pasting conveyor in a weighing and pricing device, the present invention is equally applicable to a conveying device in an automatic weighing device, a single conveying device, etc. It is something.

(Effects of the invention) As described above, according to the conveying device according to the invention,
When transporting a round bar-shaped article such as a ham or sausage, it is possible to always transport the article in a stable state without causing it to roll laterally, regardless of its diameter. This improves weighing accuracy when weighing goods while transporting them in weighing and pricing equipment, automatic weighing equipment, etc., and also improves the accuracy of weighing when affixing labels to products in the weighing and pricing equipment. Effects such as being able to always paste in a predetermined position can be obtained. According to the present invention, there is an advantage that not only the above-mentioned round bar-shaped articles but also articles with a flat bottom can be conveyed in the same manner as a conveying device using a normal flat belt.

[Brief explanation of the drawing]

1 to 6 show an embodiment of the conveying device of the present invention, FIGS. 1 and 2 are an overall side view and a plan view of a weighing and pricing device to which the embodiment is applied, and FIG. 3 is an embodiment of the conveyance device according to the present invention. Enlarged plan view of Figures 4 and 5 are Figures 3-
FIG. 6 is an enlarged vertical sectional front view of main parts showing the operation of the embodiment, and FIGS. 7 to 9 are vertical sectional front views showing conventional examples, respectively. . 30...Conveyance device (weighing conveyor), 34,3
5... Roller (34... Drive roller, 35... Followed roller), 36... Flat belt (conveyor belt), 3
9... Top plate, 40, 41... First and second belts,
40a, 41a...side part, 44...recessed part, 42
a, 43a... side.

Claims (1)

[Scope of utility model registration request] A conveyance device consisting of a flat belt wound between a pair of rollers, which extends over the entire length in the conveyance direction at the center of a top plate that supports the upper running part of the belt from below, and has both sides at the center. A recessed portion is provided which is inclined to become lower toward the conveyance direction, and the belt is separated into a first belt and a second belt on the left and right sides with respect to the conveying direction, so that the opposing sides of both belts are provided with an inclined portion of the recessed portion. A conveyance device characterized in that the conveyance device is configured to be inclined along both sides of the conveyance device.