JPH09315531A - Roller-type confluent conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent powder bag bodies from falling, being deviated and being accumulated when they are transferred from a curve conveyor to a straight conveyor. SOLUTION: A sliding roller 10a having the small contact resistance to make power bag bodies D easily transferred to the straight conveyor B, and holding rollers 10b, 10c having the large contact resistance to reliably receive the powder bag bodies D are provided on a straight conveyor B side of a confluent part C between a curve conveyor A and the straight conveyor B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller type merging conveyor in which a curve conveyor and a straight conveyor merge. More specifically, the present invention relates to a roller-type merging conveyor in which a curved conveyor curved in an arc shape for conveying a powder bag and a straight conveyor in a linear shape join together.

[0002]

2. Description of the Related Art Powder bags include powder bags packaged by a packer (packing machine) and powder bags packaged by hand, depending on the type of powder to be filled.

A powder bag packaged by a packer and a powder bag packaged by hand-packing are respectively conveyed by a conveyor and loaded on a pallet by a machine called a palletizer installed on the downstream side of the conveyor.

The powder bag packaged by hand-packing, which is in low demand, is transported irregularly. However, it is not preferable to always provide a conveyor for conveying the powder bag packaged by hand-packing, which is rarely used, from the viewpoint of facility cost and inefficient use of the conveyor.

Therefore, there is one in which a powder bag packaged by a packer and a powder bag packaged by hand packing can be conveyed at different times on the same conveyor line, and a palletizer installed on the downstream side can be used in common. desired.

By the way, in order to meet the above demands,
There is a merging conveyor that conveys boxes such as corrugated cardboard, and in order to properly convey the powder bags using the merging conveyor, the powder bags that are regularly conveyed are conveyed using the curve conveyor of the merging conveyor. However, it is conceivable to use a straight conveyor, which is a merging conveyor, to convey powder bags that are conveyed irregularly.

[0007]

However, the merging conveyor used for the box is suitable for a box-shaped object such as a regular corrugated cardboard having a stable center of gravity and a fixed shape, but the center of gravity is unstable. It is not suitable for conveying powder bags whose shape is not fixed.

That is, in the periodical conveyance of the powder bag,
When the powder bag is transferred from the curved conveyor to the straight conveyor, the powder bag comes into contact with the corners of the rollers of the straight conveyor, which causes the powder bag carry-in angle to be shifted and to fall or to be tilted from one side. There are cases. Also,
Sliding of the rollers on the straight conveyor side during transfer, resistance of the boundary plate provided below the connection boundary between the curved conveyor and the straight conveyor, improper speed setting of the transfer speed between the two conveyors, or There is a possibility that stagnation (stagnation) may occur due to contact with the inner guide.

The present invention has been made in order to solve the above-mentioned inconvenience, and when the powder bag is transferred from the curved conveyor to the straight conveyor, the powder bag is tumbled or stagnation (stagnation). It is an object of the present invention to provide a roller type conveyor capable of preventing the above-mentioned problems.

[0010]

In order to achieve the above object, according to the present invention, in a roller type merging conveyor in which a curved conveyor curved in an arc shape for conveying a bag and a straight conveyor provided in a straight line merge, On the straight conveyor side where the conveyor and the straight conveyor meet, a sliding roller with a small contact resistance that makes it easy to transfer the bag to be transferred from the curved conveyor to the straight conveyor, and a contact that reliably receives the transferred bag into the straight conveyor Provided is a roller-type merging conveyor having a holding roller having a large resistance.

[0011]

In a preferred embodiment, the sliding roller is a steel roller, and the holding roller is a coating roller having a urethane or polyvinyl chloride lining on the outer circumference of a steel roll core, and a steel roller core outer circumference. It is characterized by comprising a grooved coating roller coated with a urethane or polyvinyl chloride lining having irregularities.

[0012] In a further preferred embodiment, the sliding roller and the holding roller in the merging portion are chamfered at the corners on the curve conveyor side.

In a further preferred embodiment, the straight conveyor is faster than a set speed of the curve conveyor.

In a further preferred embodiment, the straight conveyor is 1.3 to 2 times, preferably 1.4 to 1.6 times faster than the set speed of the curve conveyor.

In a further preferred embodiment, the curve conveyor and the straight conveyor are driven by a drive motor, and the drive motor is equipped with an inverter for varying the rotation speed. The curve conveyor and the straight conveyor are preferably driven by separate drive motors.

In a further preferred embodiment, a boundary plate is provided below the connection boundary between the curved conveyor and the straight conveyor at the confluence of the curved conveyor and the straight conveyor, and the boundary plate is made of synthetic resin having low contact resistance. It is characterized by being made of a plate.

In a further preferred embodiment, the boundary plate made of synthetic resin is made of acrylic resin.

In a further preferred embodiment, the inner guide of the curve conveyor at the merging portion is a roller type movable guide.

[0019]

1 to 5 show an embodiment of a roller type merging conveyor according to the present invention. 1 is a plan view of the entire merging conveyor, FIG. 2 is a sectional view taken along the line AA of FIG. 1, FIG. 3 is a side view of a curved conveyor portion of the merging conveyor of FIG. 1, and FIG. 4 is a view taken along the line BB of FIG. FIG. 5 is a sectional view, and FIG. 5 is a side view of a straight conveyor portion of the merging conveyor of FIG.

In the roller type merging conveyor of the present invention, a curved conveyor A bent in an arc shape and a straight conveyor B provided in a straight line are connected. The curve conveyor A bent in an arc shape has, for example, a radius R of a circle passing through the center line of the curve conveyor of 1200 mm and a center angle θ of about 70 °.

The main body 1 of the curved conveyor A is shown in FIG.
As shown in FIG. 3, each leg 3 is supported by several right and left legs 3, and each leg 3 has an adjustment bolt 4 having an anchor plate.
Is attached. Therefore, the curve conveyor A is
By adjusting the adjusting bolt 4 having the anchor plate, it is possible to stably and horizontally install even if the installation floor surface has some irregularities. Further, a reinforcing pipe 5 and the like are provided between the front and rear legs 3 and are stable in strength.

On the upper part of the main body 1 of the curve conveyor A,
The taper rollers 6 are arranged at predetermined intervals. Each taper roller 6 is composed of a tapered roller having an outer diameter on the inside of the curve smaller than an outer diameter on the outside of the curve, and each taper roller 6 in the merging portion C which joins the straight conveyor B is directed toward the downstream side. It is getting shorter.

As a result, the powder bag D conveyed on the curve conveyor A has an increased rotational force on the outside of the curve, and has a small turn on the inside of the curve of the curve conveyor A and a large turn on the outside of the curve, and is smoothly conveyed. . Each roller 6
Is made of, for example, a urethane roller having a relatively large contact resistance in which a urethane lining is coated on the outer circumference of a steel roll core.

A drive motor M is installed inside the curve conveyor A as shown in FIG. 2, and the taper roller 6 is driven by a rotation of the drive motor M through a chain. The one or two short taper rollers 6 provided on the downstream side of the front end of the curve conveyor A need not be drive rollers because it is sufficient to move and guide the powder bag D.

On the left and right of these taper rollers 6, there are guides 7a, 7 for guiding the powder bag D to be conveyed.
b, 8a, 8b are provided. The guide 7a is a detachable inner guide for the curve conveyor A, and is composed of a roller-type movable guide in which a large number of rollers to be attached when the curve conveyor of the merging conveyor is used are arranged vertically. As a result, even if the conveying angle of the powder bag D to be conveyed slightly shifts and comes into contact with the guide 7a, the powder bag D can be smoothly guided from the curved conveyor A to the straight conveyor B by being guided without resistance.

The guide 7b is a detachable outer guide for the curve conveyor A, which is also a plate-like guide to be attached when the curve conveyor of the merging conveyor is used. Therefore, when the guides 7a and 7b are attached, the guides 7a and 7b serve as guides for the curve conveyor A, while these guides
If a and 7b are removed and a straight conveyor guide is attached to the side of the straight conveyor B, which will be described later, this merging conveyor can be used only as a straight conveyor.

The guides 8a and 8b are fixed plate-shaped fixed guides provided on the right and left sides on the upstream side of the curve conveyor A as shown in FIG.

The straight conveyor B is a straight conveyor in the conveying direction. The main body 2 of the straight conveyor B is supported by several legs 3 on the left, right, front and rear, as shown in FIGS. An adjustment bolt 4 having an anchor plate is attached to each leg 3. Therefore, the straight conveyor B can also be stably and horizontally installed by adjusting the adjusting bolt 4 having the anchor plate even if the installation floor surface is slightly uneven. A reinforcing pipe 5 is provided between the front, rear, left and right legs 3,
It is reinforced.

The straight conveyor B is provided with a predetermined number of rollers 10, 10a, 10b, 10c, 10 having the same outer diameters at the left and right ends and different materials and shapes from each other at predetermined intervals. At the merging portion C where the curved conveyor A and the straight conveyor B merge, the sliding roller 10a having a small contact resistance and the transferred powder bag D are provided so that the powder bag D can easily transfer from the curve conveyor A to the straight conveyor B. Holding rollers 10b and 10c having a large contact resistance that are reliably received by the straight conveyor B are provided.

The roller 10 is a urethane roller, and the sliding roller 10a is a steel roller made entirely of steel. The holding roller 10b is shown in FIG.
As shown in (a), for example, it is composed of a urethane coated roller in which a urethane lining 11 having a thickness of 3 mm is attached to the outer circumference of a steel roll core 9 having a diameter of 57 mm, and the corners thereof are chamfered as described later (Fig. 7 ( b)). Note that polyvinyl chloride may be used as a constituent material of each roller instead of urethane.

Further, the holding roller 10c is shown in FIG.
As shown in (b), it is composed of a grooved coated roller having a 3 mm thick urethane or polyvinyl chloride lining 12 having irregularities on the outer periphery of a steel roll core 9 of 57 mmφ, for example. This unevenness is, for example, a large number of grooves 12a formed along the direction of the roller shaft, and the groove 12a has a depth of 0.5 mm and a pitch of 1 mm, and has a gear-shaped cross section.

The holding roller 10b at the merging portion C where the two conveyors A and B meet (preferably the sliding roller 10).
a, also regarding the holding roller 10c), the chamfer as shown in FIG. 7B in which the corner on the curve conveyor A side of the urethane (or polyvinyl chloride) lining 11 adhered to the outer periphery of the steel roll core 9 is obliquely cut. 13 are provided.

Therefore, when the powder bag D is transferred from the curve conveyor A to the straight conveyor B, the roller 10
Smooth transfer without contacting the corners a, 10b, and 10c, a certain carry-in angle is ensured, and tipping and tilting (inclination) are prevented.

The rollers 10, 10a, 10b, 10c
For example, from the upstream side to the downstream side, there are eight normal rollers 10 made of urethane rollers, three sliding rollers 10a made of steel rollers, and one holding roller 10b made of urethane (or polyvinyl chloride) coated rollers. Three holding rollers 10c made of urethane (or polyvinyl chloride) coated rollers with grooves having irregularities and seven ordinary rollers 10 made of urethane rollers are provided.

In this case, the magnitude of the contact resistance of each roller in the merging portion C has a relationship of holding roller 10c> holding roller 10b> sliding roller 10a.

At the junction C between the curved conveyor A and the straight conveyor B, a boundary plate 14 made of acrylic resin having a small contact resistance is provided below the connection boundary between the curved conveyor A and the straight conveyor B. For such corrugated board for corrugated board transportation, ultra high molecular weight polyethylene solid resin (trade name) can be used.
For conveying the powder bag, the boundary plate 14 is made of acrylic resin having a smaller contact resistance. Therefore, when the powder bag D moves from the curve conveyor A to the straight conveyor B, the powder bag D can be prevented from staying (stagnation) at the boundary plate 14.

A drive motor M is installed inside the straight conveyor B as shown in FIGS. 4 and 5, and these rollers 10, 10a, 10b and 10c are driven by a rotation of the drive motor M through a chain. It

Set speed β of this straight conveyor B
Is faster than the set speed α of the curve conveyor A. This β is preferably 1.3 to 1.7 times that of α, and a particularly preferable range is 1.4 to 1.6 times, and 1.5 times is the best operability. For example, the set speed α of the curve conveyor A is 10 m / min, and the straight conveyor B
The set speed β is set to 15 m / min, which is 1.5 times the set speed β, and the powder bag D is smoothly moved from the curve conveyor A to the straight conveyor B.

The set speed is in the relation of β> α for the following reason.

That is, since the straight conveyor B is connected so as to bite into the curve conveyor A, the conveyance distance from the curve conveyor A to the straight conveyor B is shorter in the outer portion than in the inner portion. ing. In this state, when the powder bag D is conveyed from the curve conveyor A to the straight conveyor B at a constant speed, when the outer part of the powder bag D is moved onto the straight conveyor B, the inner part of the powder bag D is still on. The vehicle is on the curve conveyor A (not on the straight conveyor B).

Therefore, when the outer portion of the powder bag D is transferred from the curve conveyor A to the straight conveyor B, if there is an appropriate relationship of β> α, that is, the set speed β of the straight conveyor B is the curve conveyor. A set speed α
If it is 1.5 times, the outer portion of the powder bag D to be conveyed is changed in direction by the straight conveyor B having a high speed, and the inner side portion of the powder bag D is straight conveyor B.
When transferred to, the two parts are conveyed in the correct vertical position with respect to the straight conveyor B (Fig. 9).
(C)). Therefore, the powder bag D is straight conveyor B
It is carried in at a constant angle and is stably transported.

The set speed ratio (1: 1.5) between the straight conveyor B and the curved conveyor A is all such as the shape (dimension) and weight of the powder bag D, the merging angle of the curved conveyor A and the straight conveyor B, and the like. Is taken into consideration.

Here, β is too large than 1.5α and β>
When the relation of> 1.5α is satisfied, the movement of the outer side portion of the powder bag D in the curving direction is too fast.
As shown in (a), the powder bag D is wound inside the curve conveyor A. On the other hand, when β is too smaller than 1.5α and β << 1.5α, the movement of the outer side portion of the powder bag D in the curve direction is too slow, as shown in FIG. 9B. As described above, the powder bag D is wound around the curve conveyor A. The conveyor A,
The speed change (rotation speed control) of B is performed by an inverter (not shown) connected to the drive motor M.

FIG. 6 is a plan view showing an example in which the merging conveyor of the present invention is used only as a straight conveyor.

Although it is irregular, depending on the type of powder filling, the powder is manually bagged and straight conveyor B
May be used for transportation. In such a case, the detachable guides 7a and 7b of the curve conveyor A are removed, and new detachable guides 15a and 15b are attached to the left and right of the straight conveyor B. At this time, for example, a temporary sewing machine (not shown) is installed on the conveyor 16 downstream of the straight conveyor B, and the mouth of the powder bag D to be conveyed is sewn with the sewing machine and sealed.

On the upstream side of the straight conveyor B, there are provided a scale 17, a universal direction changer 18, and a manipulator 19 for weighing the powder bag D, and the powder bag D filled with powder is weighed. Weighing device 17 and turning device 18
The direction of the powder bag D is adjusted by the vibration of the vibrator of the manipulator 19, and the shape of the powder bag D is adjusted by the straight conveyor B.
Conveyed by.

On the downstream side of the straight conveyor B, a conveyor 16 having the above-mentioned sewing machine is provided, and the powder bag D is conveyed from the straight conveyor B to the conveyor 16 and sealed by a sewing machine.

In this state, the set speed β of the straight conveyor B and the set speed γ of the downstream transfer conveyor 16 are β.
If there is a relation of> γ, the next powder bag D will be conveyed during the sewing machine work, so the speeds of both conveyors are adjusted and set so that the set speeds of β and γ have a constant proportional relationship. To do. In this way, the inverter for varying the speed is connected to the drive motor M, and the rotation speed is controlled by the inverter, whereby the powder bag D is smoothly sealed.

The outer guide 7 for the curve conveyor A
b (Fig. 1) is removed and straight conveyor B guide 1
It is also possible to use curve conveyor A and straight conveyor B at the same time by removing 5a (FIG. 6).

[0050]

As described above, according to the present invention, for facilitating transfer of a powder bag article to be transferred from the curve conveyor to the straight conveyor on the straight conveyor side of the merging portion where the curve conveyor and the straight conveyor merge. Equipped with a sliding roller with a low contact resistance and a holding roller with a large contact resistance that reliably receives the transferred powder bag on the straight conveyor, the powder bag smoothly transfers from the curved conveyor to the straight conveyor, and surely becomes a straight conveyor. Accepted. Therefore, there is less retention than pieces of powder bag.

Further, since the corners of the sliding roller and the holding roller at the merging portion on the side of the curve conveyor are chamfered, the powder bag to be conveyed does not come into contact with the corners of the roller and is conveyed from the curve conveyor to the straight conveyor at a constant angle. Stable transportation is ensured.

Moreover, the set speed of the straight conveyor is set higher than the set speed of the curved conveyor by a predetermined amount, and a boundary plate made of synthetic resin having a low contact resistance is provided below the connection boundary between the curved conveyor and the straight conveyor, so that Since the roller type movable guide is provided on the inner guide of the merging portion of the straight conveyor, the powder bag can be smoothly and reliably moved from the curved conveyor to the straight conveyor.

Therefore, when the powder bag is transferred from the curved conveyor to the straight conveyor, the powder bag can be stably transported without falling, falling, and staying (stagnation).

Further, according to the present invention, the merging conveyor, in which the curve conveyor and the straight conveyor merge, allows the powder bags to be packed by the packer and the powder bags to be packed by hand to be appropriately conveyed as needed. Can
Equipment costs are reduced and equipment is used effectively.
Furthermore, for powder bags that require sealing with a sewing machine,
This has the effect of changing the set speed of the conveyor by the inverter so that it can be conveyed properly.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram when a curved conveyor of a roller type merging conveyor according to the present invention is used.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a side view of the curved conveyor portion of FIG.

FIG. 4 is a sectional view taken along line BB of FIG.

5 is a side view of the straight conveyor portion of FIG. 1. FIG.

FIG. 6 is a schematic configuration diagram when only a straight conveyor of the roller type merging conveyor according to the present invention is used.

FIG. 7 is a shape diagram of a urethane roller ((a) is before chamfering,
(B) is a cross-sectional view of the main part after chamfering).

FIG. 8 is a shape view of a grooved roller having unevenness ((a) is a plan view of a main part, (b) is a sectional shape view).

FIG. 9 is an explanatory view showing the relationship between the set speed of the curve conveyor and the straight conveyor and the powder bag to be conveyed ((a)).
Is an explanatory plan view when β >> 1.5α, and (b) is β << 1.
Plan explanatory view at the time of 5α, (c) Plan explanatory view at the time of β = 1.5α).

[Explanation of symbols]

A: Curve conveyor B: Straight conveyor C: Confluence part D: Powder bag 6: Roller 7a: Curve conveyor inner guide 7b: Curve conveyor outer guide 9: Steel roller core 10: Urethane roller 10a: Sliding consisting of steel roller Roller 10b: Holding roller made of urethane (or polyvinyl chloride) coated roller 10c: Holding roller made of grooved urethane (or polyvinyl chloride) coated roller having irregularities 11: Urethane (or polyvinyl chloride) lining 12: Concavo-convex Owned urethane (or polyvinyl chloride) lining 12a: groove 14: boundary plate

Claims (9)

[Claims] 1. A roller-type merging conveyor in which a curved conveyor curved in an arc shape for conveying a bag and a straight conveyor provided in a straight line merge, in a straight conveyor side of a merging portion where the curve conveyor and the straight conveyor merge. A roller characterized by having a sliding roller with a small contact resistance for facilitating the transfer of a bag to be transferred from a curved conveyor to a straight conveyor, and a holding roller with a large contact resistance for reliably receiving the transferred bag on the straight conveyor. Type merge conveyor. 2. The sliding roller is a steel roller, the holding roller is a urethane-coated roller having a urethane roll or polyvinyl chloride lining on the outer circumference of a steel roll core, and a urethane or polychloride roll having irregularities on the outer circumference of the steel roll core. 2. The roller-type merging conveyor according to claim 1, wherein the roller-type merging conveyor comprises a grooved coating roller coated with a vinyl lining. 3. The roller type merging conveyor according to claim 1, wherein the sliding roller and the holding roller of the merging portion are chamfered at the corners on the curve conveyor side. 4. The roller type merging conveyor according to claim 1, wherein the straight conveyor is faster than a set speed of a curve conveyor. 5. The roller type merging conveyor according to claim 4, wherein the straight conveyor is 1.3 to 1.7 times faster than a set speed of the curve conveyor. 6. The curved conveyor and the straight conveyor are driven by a drive motor, and the drive motor is provided with an inverter for varying the rotation speed. Roller type merging conveyor. 7. A merging portion between the curved conveyor and the straight conveyor is provided with a boundary plate below a connection boundary between the curved conveyor and the straight conveyor, and the boundary plate is made of a synthetic resin plate having a low contact resistance. The roller type merging conveyor according to claim 1. 8. The roller type merging conveyor according to claim 7, wherein the boundary plate made of synthetic resin is made of acrylic resin. 9. The roller type merging conveyor according to claim 1, wherein an inner guide of the curve conveyor of the merging portion is a roller type movable guide.