JP2000007118A - Curved conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curved conveyor which can be constructed small and light, can suppress noise emission, and can make smooth transfer of a work to/from connecting conveyors connected with the input end and output end. SOLUTION: A first and a second wind-on rotor 6 are installed outside in radial direction of a first 2 and a second straight shaft pulley 3, and on these rotors, a no-node endless cord is set over, which is guided by guide roller with two surfaces and curved along the peripheral edge of a transport belt 4 in a position apart outward in radial direction from the peripheral edge, and a number of resilient pieces 12 are set over between the endless cord 9 and the belt peripheral edge, wherein each resilient piece 12 has an elastic portion and a mounting part attached to the endless cord, and the guide roller 11 guides one surface of the cord where the mounting part is provided and in a position out of the mounting part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention can be made small and lightweight, can suppress the generation of noise, and can smoothly transfer a workpiece between a conveyer connected to an entrance end and an exit end. Related to curved conveyors.

[0002]

2. Description of the Related Art A curved conveyor using a belt having a flat fan-shaped transfer surface in order to change the transfer direction of a transferred object in a horizontal plane is known.

[0003] Such a curved conveyor P is shown in FIG.
To two cone-shaped pulleys a at both ends as shown in FIG.
1 and a2, and a flat fan-shaped belt b is wound between pulleys a1 and a2.
An endless string-like body c is superimposed on the endless string.

[0004]

The string c is wound around a driving wheel g for driving the belt b, and receives guide rollers d in order to precisely rotate the belt b in a curved shape. It also shares the function as a guide. Therefore, as a result of the string-shaped body c being fixed to the belt b, the pulley diameters of the pulleys a1 and a2 for winding the belt b naturally increase due to the restriction of the flexibility (allowable minimum bending radius) of the string-shaped body c. In addition, since the pulleys a1 and a2 have a cone shape, the shafts f1 and f2 that support the pulleys a1 and a2 need to be inclined, so that the entire conveyor device becomes complicated and large, and the weight increases.

In addition, as the diameters of the pulleys a1 and a2 increase, a gap l formed between the conveying surfaces of the two conveyors p and q between the pulleys a1 and a2 and the connecting conveyor q arranged adjacent to the curved conveyor p. As a result, there is a problem that the transfer of the transported work w is not smooth. For this reason, the emergence of a curved conveyor using a belt in which the gap l is reduced to make the transfer smoother, and the work can be reliably transported, and the stability of the work is better than that of the roller conveyor. Had been requested.

[0006] As a result of repeated studies to satisfy the above demand, the inventor of the present invention has formed a transport belt and a connecting string for driving the transport belt individually, and has used a connecting fitting between the two. The present invention has been found that the above-mentioned demand can be satisfied and that the entire conveyor can be reduced in weight and size by increasing the degree of freedom in designing the conveyor belt, for example, by reducing the diameter of the pulleys by connecting the pulleys, and completing the present invention.

The present invention is to provide a curved conveyor which can be formed light and small in size, can reduce costs, can suppress the generation of noise during transportation, and can smoothly transfer the connecting conveyor at the entrance end and the exit end. The purpose is.

[0008]

According to the present invention, a first straight shaft pulley provided at one end and the first straight shaft pulley provided at the other end intersect with an extension of a center line. The first linear pulley is inclined from the first linear pulley by an opening angle α, and a flat surface is formed by being wound on the first and second linear pulleys while forming a conical surface shape. Curved conveyor having a fan-shaped flat belt-shaped transport belt,
First and second winding rotary bodies are provided on the radially outer sides of the first and second linear pulleys, respectively, and the first and second winding rotary bodies are guided by guide rollers on two surfaces. By doing so, while passing over the infinity-less endless string that curves along the outer circumference at a position radially outwardly away from the outer circumference of the transport belt, the A large number of elastic bodies are bridged between the outer peripheral edge and the elastic body, and the elastic bodies have an elastic portion and a mounting portion mounted on the endless stringless body. A curved conveyor characterized in that one of the guide rollers guides one surface of the knot endless string body and a position deviated from the attachment portion. The endless string body can be formed by a V-belt.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 9, the curved conveyor 1 includes a first straight shaft pulley 2 provided at one end E <b> 1,
A conveyer belt 4 having a conical surface shape is wound around a second straight shaft pulley 3 provided at the other end E2 and arranged in a direction intersecting with the first straight shaft pulley 2. . These first and second linear pulleys 2 and 3 and the transport belt 4
Is provided on a base 20 installed on the floor.

As shown in FIGS. 1 and 2, the extension of the center line of the second straight pulley 3 is the same as that of the first straight pulley 2 shown in FIGS.
Intersects with the extension of the center line of the first straight shaft pulley 2 and is inclined at an opening angle α. The opening angle α can be appropriately selected within a range of more than 0 ° and 360 ° or less, but is usually in a range of 15 ° to 270 °. In this example, the case where the opening angle α is 90 ° is illustrated. Therefore, the conveying belt 4 is wound around the first and second linear pulleys 3 so that the shape of the conveying surface F is changed to the opening angle. α is 90 °
In the shape of a fan.

As shown in FIG. 2, the curved conveyor 1 has a first connecting conveyor C1 and a second connecting conveyor C1 having a conveying surface at substantially the same height as the conveying surface F of the curved conveyor 1 at each of the one end E1 and the other end E2. 2 connection conveyor C2
Are connected and the transport surface F moves from the other end E2 toward the one end E1, the second connection conveyor C2
Can be turned 90 degrees by the curved conveyor 1 and sent out to the first connection conveyor C1.

The base 20, as shown in FIG.
A fan-shaped frame 24 in which each end of an inner frame member 21 and an outer frame member 22 arranged opposite to each other is connected by a side beam member 23 is provided. A plurality of supporting leg pieces 25 are provided below. The frame body 24 has a plurality of intermediate girder members 26 that connect the inner and outer frame members 21 and 22 between the side girder members 23 and 23.
... is arranged. On the upper surfaces of the side beams 23, 23 and the intermediate beams 26, a plurality of crosspieces 27 supporting the transport-side lower surface of the transport belt 4 are provided.

The transport belt 4 is formed by winding a rubber sheet having a uniform thickness into a conical surface shape.
The transport belt 4 can be reinforced by interposing a fiber or metal net as a core material, if necessary.

At one end E1 of the curved conveyor 1, a bearing member 30 for holding the first straight shaft pulley 2 is disposed forward of the side beam member 23 in the conveying direction. The bearing member 30 projects a plurality of three bearing pieces 32... In the present example, in which a plurality of shaft holes 32 a for holding a support shaft are arranged in two upper and lower stages from a base piece 31 extending substantially parallel to the side beam member 23. As shown in FIG. 4, the bearing member 30 is attached using a bolt 33 so that the distance between the bearing member 30 and the side beam member 23 can be adjusted. Therefore, the bearing member 30 can move closer to the side beam 23 by adjusting the nut tightening position of the bolt 33.
The bearing pieces 32 are arranged side by side in the longitudinal direction of the side girders 23, and are arranged in a comb shape with the holes 32a concentric.
Pulley shafts 34A and 34B, which are inserted through the respective holes 32a, are bridged between these bearing pieces 32 in two stages, upper and lower, with the shaft ends protruding from the bearing pieces 32.

As shown in FIG. 5, an intermediate pulley piece 36 between the bearing pieces 32, 32 and an end pulley piece 37 at a portion protruding from the bearing piece 32 are loosely fitted to the upper pulley shaft 34A. An upper pulley piece group 39 is formed by the two intermediate pulley pieces 36, 36 and the two end pulley pieces 37, 37 arranged concentrically. The intermediate pulley piece 36 has a straight cylindrical shape, and the side pulley piece 37 has a pulley shaft 34A.
Are formed in the shape of a cone whose diameter is reduced toward the tip.
37 can rotate independently of the upper pulley shaft 34A.

In the lower pulley shaft 34B, the intermediate pulley pieces 36, 36 formed in the same manner as the upper pulley piece group 39 arranged on the upper pulley shaft 34A and the pulley pieces 37, 37 on the side.
A lower pulley piece group 40 is formed. In the present example, the lower pulley shaft 34B is arranged closer to the inside by about 5 mm than the upper pulley shaft 34A. In this example, the first and second pulley groups 39 and 40 serve as the first pulley.
Is formed.

Also at the other end E2, the second straight pulley 3 is formed by the upper pulley group 39 and the lower pulley group 40 which are formed similarly to the one end E1 and arranged vertically.

The first and second linear pulleys 2,
By winding the transfer belt 4 around the transfer belt 3, the transfer belt 4 has a plane fan shape having an upper surface as a transfer surface F, and rotates between the first and second straight shaft pulleys 2 and 3. can do. Moreover, the first and second linear pulleys 2, 3
Is divided into a plurality of pieces in the axial direction of the pulley shafts 34A and 34B, and a plurality of pulley pieces 36, each of which can rotate independently,
Since it is formed by 36, 37, and 37, the pulley piece located on the inner side in the pulley axial direction and the pulley piece located on the outer side can rotate at different speeds. Therefore, by forming a plane fan shape, the inner peripheral edge 4b and the outer peripheral edge 4a
Are transported at different speeds in accordance with the radius ratio.
Even when the first and second straight shaft pulleys 2 and 3 are wound around the first and second straight shaft pulleys 2 and 3, there is no substantial slippage. You can make it go around.

In addition, the upper and lower pulley groups 39, 40
Are formed in a straight cylindrical shape having the same diameter, so that the pulley shafts 34A and 34B pivotally support these pulley groups 39 and 40.
Can be installed parallel to the transport surface F, and the bearing member 30 that supports these pulley shafts 34A and 34B is
Unlike the case where the cone-shaped pulleys a1 and a2 are supported as shown in FIG. 5, there is no need to support the pulley shafts 34A and 34B by tilting, so that the configuration for supporting the pulleys can be easily formed.

Further, the transport belt 4 is provided with the inner peripheral edge 4.
The outer peripheral edge 4a (shown in FIGS. 5 and 6) has a longer peripheral length than the peripheral length b (shown in FIG. 1). 4 has a longer circumferential length, that is, an action force for pulling the transport belt 4 toward the outer frame member 22 is generated, so that the transport belt 4 is moved between the first and second straight shaft pulleys 2 during rotation. There is no danger of deviating from 3.

First and second winding rotating bodies 6 and 7 are arranged radially outside the first and second linear pulleys 2 and 3, respectively. As shown in FIG. 7, the first winding rotary body 6 is supported by a bearing body 41 fixed to the outer side surface of a vertical piece of the outer frame member 22, and is supported by the first linear pulley 2. It is externally fitted to a shaft 8A facing in the same direction as the pulley shafts 34A and 34B. A transmission 42 such as a V-belt transmission mechanism is provided between the shaft 8A and an output shaft of a rotary driving machine M such as a motor, and the first winding rotary body 6 is driven by driving the rotary driving machine M. Can be rotated.

The second wrapping rotary member 7 also has a pulley shaft 3 of the second straight pulley 3 in the same manner as the first wrapping rotary member 6.
It is externally fitted to a shaft 8B facing the same direction as 4A and 34B. The shaft 8B rotates freely without engaging with the transmission. The first and second winding rotating bodies 6 and 7 are arranged at a distance from the outer peripheral edge 4 a of the transport belt 4.

An endless string 9 is wound around the first and second winding rotating bodies 6 and 7. In this example, the endless stringless body 9 is a V-belt 9A.
A small-sized general-purpose V-belt such as A-type or B-type specified in K6323 is preferably used. Accordingly, a V-shaped groove for fitting the V-belt is provided on the outer peripheral surface of each of the first and second winding rotating bodies 6 and 7 around which the seamless endless string body 9 is wound.

The seamless endless cord body 9 has two surfaces, namely, inner and outer guide rollers 10 and 11 which can freely rotate around pins 45 implanted in mounting pieces 43 and 44 extending from the outer frame member 22. The side surface 9s and the back surface 9u are guided. That is, in this example, the inner guide roller 10 guides the inward side surface 9s of the V-belt 9A, and the outer guide roller 11 guides the back surface 9u of the V-belt 9A, as shown in FIG. The inner and outer guide rollers 10 and 11 are positioned so that the transport belt 4 can circulate at a distance from the outer peripheral edge 4a and are juxtaposed at a pitch P1 in the transport direction.

Therefore, the seamless endless cord body 9 is radially outwardly separated from the outer peripheral edge of the transport belt 4 along the outer peripheral edge 4a by the guidance of the guide rollers 10,. Orbit while bending.

A large number of elastic members 12 are bridged between the non-endless endless cords 9 and the outer peripheral edge 4a of the conveyor belt 4 at intervals. As shown in FIG. 6, the elastic body 12 includes an elastic part 14 located on the side of the transport belt 4 and this elastic part 14.
And an attachment portion 15 having one end engaged with the other end and fixed to the endless stringless body 9.

The endless endless cord body 9 is formed of an A-type or B-type V-belt for general use, and the mounting portion 1 is provided on the side of the V-belt facing the transport belt 4.
5 is inserted and fixed from the back 9u side. Further, as shown in FIG. 9, the mounting portion 15 is mounted on the back surface 9u while being deviated toward the elastic portion 14 side. Thereby, the guide roller 11 for guiding using the back surface 9u on the opposite side can be guided. In addition,
The mounting pitch P2 of the mounting portion 15 is formed to a size different from the pitch P1 of the guide rollers (FIG. 3).

In the present embodiment, the elastic portions 14 have hooks 14 at both ends.
a, a metal tension spring provided with a hook hole 51 penetrating through one hook piece 14a in the vicinity of the outer peripheral edge 4a of the conveyor belt 4, and a hook piece 14a 1
5 are locked to the inner ends of the elastic members 12 respectively.
Is suspended between the outer peripheral edge 4 a of the transport belt 4 and the endless stringless body 9. The hook piece 14a can be attached to the inner end of the attachment portion 15 with the peripheral surface interposed by an elastic material such as rubber.

A cover 53 extending from the outer frame member 22 toward the outer peripheral edge 4a of the conveyor belt 4 is provided above the seamless endless cord body 9 and the elastic body 12.

However, by driving the driving machine M,
The first winding rotating body 6 rotates, and the infinity-less endless string body 6 wound around the first winding rotating body 6 has two guide rollers 10. By the guidance, it goes around while bending. Since the seamless endless string body 6 is a seamless endless body such as a V-belt, there is no generation of noise that is inevitably generated at the time of meshing and bending as compared to a knotted string body such as a chain. It can operate quietly.

The arrangement pitch P of the guide rollers 10 and 11
1 and the mounting pitch P2 of the mounting portions 15 are arranged with different dimensions, so that the pulsation of the seamless endless string body that occurs when a large number of mounting portions 15 simultaneously pass through the guide rollers 10 and 11 can be eliminated, and Since the propagation of vibration to the transfer belt 4 can be eliminated, the transport belt 4 can be gently circulated.

Further, since the conveyor belt 4 is connected via the elastic body 12, the elastic body 12 expands and contracts during operation, so that the outer peripheral edge 4a of the conveyor belt 4 and the endless endless cord body are connected. The degree of freedom for relative positioning with the conveyor 9 is increased, and the assembling of the conveyor is facilitated.

Thus, the diameters of the first and second linear pulleys 2 and 3 at one end E1 and the other end E2 are determined by the first and second diameters.
The second winding rotating bodies 6 and 7 can be formed with different diameters.

The first and second linear pulleys 3 and 4 are provided with two pulleys 39 and 40 disposed above and below as described above.
The length of the peripheral length of the outer peripheral edge of the conveying belt 4 and the peripheral length of the seamless endless cord body 9 can be more easily adjusted, and the first and second winding rotating bodies are formed. 6, 7 can be formed without significantly protruding from each end of the conveyor, and the connecting conveyors C1, C2 connected to the curved conveyor can be arranged closer.

FIG. 10 merely illustrates another articulated endless cord and elastic body. The endless stringless body 9A is formed by superposing two V-belts 17A and 17B with their backs facing each other to form a string body having a hexagonal cross section, and a mounting portion forming a narrow plate-like body at the mating surface. Fifteen
B is pinched. The connection end side of the mounting portion 15B with the elastic portion 14 is alternately bent upward and downward. The guide rollers 10A and 11A receive the inward side surfaces of the V-belts 17A and 17B, and guide the endless cordless body 9A to bend while being curved.

The elastic body may be formed of a stretchable and elongated rubber-like body other than a tension spring, or the transfer belt may be formed of a thin metal plate. Furthermore, the guide roller pitch P1 or the mounting pitch P2 of the mounting portion
By arranging in the circumferential direction as an irregular pitch in any one or both of them, it is possible to prevent each mounting portion from passing through the guide roller at the same time. As described above, the embodiments of the present invention can be modified into various modes.

[0037]

As described above, the curved conveyor according to the present invention has a structure in which an elastic body is bridged between a flat fan-shaped conveying belt and a seamless endless string body. Since the assembling is simplified and the cost can be reduced, and since the diameter of the pulley can be reduced at one end and the other end, the gap between the transfer surface and the connection conveyor can be reduced, so that the work can be mounted. The transfer accuracy is improved, and a smaller work can be transported. In addition, since the endless string is formed of a knotless string such as a V-belt, it generates less noise than a knotted string such as a chain, thereby improving the environment and conveyer. Lightening of the device can also be promoted.

Also, by using a V-belt for the endless stringless body, a strong and small string can be formed at a low cost, and the size of the conveyor device can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an embodiment of the present invention.

FIG. 2 is a plan view exemplifying the connection conveyor.

FIG. 3 is a partially sectional perspective view showing a main part thereof.

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

FIG. 5 is a partial sectional view taken along the line YY.

FIG. 6 is a cross-sectional view illustrating an endless endless string and an elastic body together with a guide roller.

FIG. 7 is a cross-sectional view illustrating a wrapping rotator.

FIG. 8 is a diagram showing a connection operation with a connection conveyor.

FIG. 9 is a cross-sectional view illustrating a mounting part.

FIG. 10 is a sectional view showing another example of a seamless endless cord.

FIG. 11 is a plan view showing a conventional technique.

FIG. 12 is a cross-sectional view illustrating the driving of the belt and the guide thereof.

FIG. 13 is a cross-sectional view showing another example of driving the belt and guiding the belt.

FIG. 14 is a cross-sectional view showing connection with a conventional connection conveyor.

[Explanation of symbols]

 2 First straight shaft pulley 3 Second straight shaft pulley 4 Conveying belt 4a Outer peripheral surface 6 First winding rotating body 7 Second winding rotating body 8A, 8B Shaft 9 Non-endless endless cord body 10 , 11 guide roller 12 elastic body 14 elastic part 15 mounting part 16 sheet body E1 one end E2 other end α open angle

Claims (2)

[Claims] A first straight shaft pulley provided at one end and an extension of a center line of the first straight shaft pulley provided at the other end intersect to form the first straight shaft pulley. The pulley is a second straight shaft pulley that is inclined at an opening angle α, and a flat belt shape that has a conical surface shape and is wound around the first and second straight shaft pulleys to form a flat fan shape. A curved conveyor having a conveyor belt and first and second winding rotary members provided radially outward of each of the first and second linear pulleys; By being guided by the guide rollers on the hanging rotary body on two surfaces, the endless cordless body that curves along the outer peripheral edge at a position radially outward from the outer peripheral edge of the transport belt is extended. At the same time, a number of elastic bodies are bridged between the seamless endless string and the outer periphery of the conveyor belt. In addition, the elastic body has an elastic portion and a mounting portion attached to the seamless endless cord, and one surface of the jointless endless cord on which the attaching portion is disposed and comes off from the attaching portion. A curved conveyor, wherein the guide roller guides the bent position. 2. The curved conveyor according to claim 1, wherein said endless string is a V-belt.