JPH0616215A - Drive roller conveyer - Google Patents

Abstract

PURPOSE:To facilitate maintenance and positioning in a carrying direction with the removal/reinstallation of a roller simplified via a supporting frame, by inserging/extracting the supporting frame in/from between both frames from the upper side, and operating a fixture from the upper side. CONSTITUTION:Removal/reinstallation of a roller 26 is performed via a supporting frame 30, by inserting/extracting the supporting frame 30 in/from between side frames 11A and 11B, and operating a fixture 37 from the upper side. Positioning in a carrying direction is made by moving the supporting frame 30 in the longitudinal direction of the side frames 11A and 11B. When the roller 26 has no load, the abutting force 26 causes the elevation of a recessed-shape supporting part by a roller shaft 27 and the application of no load on the roller shaft, preventing damage to every part. When an article-to-be- carried reaches the roller, the roller shaft 27 is lowered in the recessed-shape supporting part 40 due to the weight of the article-to-be-carried, the roller 26 is pressedly contacted to the transmission gear 50 from the upper side, and the rotation force of the transmission gear 50 can be surely transmitted to the roller 27, providing the roller with sufficient rotation force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a body frame having a pair of left and right side frames, a group of rollers disposed between both side frames, and a driving member disposed along at least one side frame. The present invention relates to a drive roller conveyor used when, for example, an object to be conveyed is conveyed directly or via a pallet.

[0002]

2. Description of the Related Art Conventionally, as a drive roller conveyor of this type, a structure disclosed in, for example, Japanese Utility Model Laid-Open No. 1-111609 has been provided. In this conventional structure, the main body frame is composed of a pair of left and right side frames and a base frame that connects the lower parts of these side frames. Then, the support frames are arranged in abutting manner on the inner surface sides of the side frames which face each other, and then fixed by bolts and nuts, and the transport rollers are arranged between the support frames. Further, a driving body or the like is arranged on one side frame, and a transmission roller which is interlocked with the driving body and which can be connected / disconnected to the carrying roller is provided on one supporting frame.

Both ends of the roller shaft of the carrying roller are inserted into the through holes of the bearing body, and the bearing body is
After being fitted in the recess formed in the support frame, it is fixed to the support frame side via a cover plate and bolts.

[0004]

According to the above-mentioned conventional structure, both support frames supporting the conveying rollers are separately attached to and detached from the side frames, respectively. Wearing due to is troublesome, and detachment is also troublesome, and maintenance etc. cannot be performed easily. Further, when wearing, it is not possible to easily align the both support frames in the transport direction.

Since the roller shaft of the carrying roller supported by the support frame is fixed at a constant level, the transmission roller is strongly contacted with the carrying roller in order to give a sufficient carrying rotational force to the carrying roller. (Connect),
In this case, when the transported object does not reach the transport roller and is in an idle state, the strong abutment force exerts a pushing force on the roller shaft, thereby causing damage to the roller shaft, the cover plate, the bolt, and the like.

The object of the present invention is to easily and easily attach / detach the roller via the support frame, and in the idling state, the object to be conveyed has a sufficient abutment rotation even though the abutting force is weak. The point is to provide a drive roller conveyor that can be operated by force.

[0007]

In order to achieve the above object, a drive roller conveyor according to the present invention comprises a main body frame having a pair of left and right side frames, a roller group disposed between both side frames, and at least one side frame. A drive roller conveyor comprising a driving body arranged along the side of a side frame, and a pair of connecting portions on which the supporting frames can be placed between the side frames and the inner ends of the connecting portions. Is formed in a U shape by a pair of vertical plate portions that hang down from each other and a horizontal plate portion that is located between the lower portions of these vertical plate portions, and the support frame is attached to a side frame through a fixture that acts on both connecting portions. It is detachably fixed, and one of the two connecting portions is formed with a concave support portion capable of supporting the roller shaft dropped from the upper side, and the other is provided with a hole capable of supporting the roller shaft inserted from the inside. A supporting member is formed, the supporting frame is interlocked with the driving body, and It is provided abutting freely transmission from below over la.

[0008]

According to the structure of the present invention, in assembling the drive roller conveyor, the support frame is first fixed to a predetermined position between the side frames while the drive body is arranged on the main frame having the side frames. That is, the support frame incorporating the transmission device and the roller is inserted from above between the both side frames with the vertical plate portion facing the inner surface of the side frame. This insertion is completed when the lower surface of the connecting portion comes into contact with the upper surface of the side frame, at which time the transmission device is interlocked with the driving body.

Next, the position of the unit body is corrected by sliding it in the front-rear direction with respect to both side frames. After this position correction, the fixing tool is actuated, so that the support frame is fixed between the side frames via both connecting portions. The rollers may be incorporated after the support frame is fixed between the side frames.

The roller is assembled into the support frame by first inserting the other end of the roller shaft into the hole-shaped support portion formed in the other connecting portion from the inside, and then inserting the other end of the roller shaft into the concave support portion formed in the one connecting portion. Is performed by dropping from the upper side. In addition, work to remove the roller from the support frame,
The work of detaching the support frame from the side frame can be performed by reverse operation.

In the drive conveyor device assembled as described above, the moving force of the driving member is brought into contact with the roller from below while the moving force of the driving member is being transmitted to the transmitting device. To the roller to force the roller to rotate. In such a forced rotation, when there is no object to be conveyed on the roller, the abutting force of the roller shaft causes one end of the roller shaft to rise in the concave support portion, and therefore the abutting force does not apply a load to the roller shaft. .

When the transported object reaches the roller, the load of the transported object causes the roller shaft to descend in the concave support portion. Therefore, the roller is pressed against the transmission device from above and is strong between them. The pressing force acts, so that the rotational force of the transmission device is reliably transmitted to the rollers.

[0013]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 8 and FIG. 9, 1 is a machine frame, a pedestal 2 in which a pair of left and right and a plurality of front and rear are erected at predetermined intervals, a left and right member 3 for connecting intermediate portions of the left and right pedestals 2, and a predetermined Pedestal 2
And the front and rear members 4 that connect the front and rear lower parts of the.
An adjustable landing body 5 is provided at the lower end of each pedestal 2, and a guide body 6 is provided between the inner surfaces of the upper ends of the front and rear pedestals 2. A drive roller conveyor 10 and an idle roller conveyor 60 are arranged so as to be laterally distributed between the upper surfaces of the left and right members 3.

As shown in FIGS. 1 to 4, 8, and 9, the drive roller conveyor 10 includes a pair of left and right side frames 11A and 11A.
B and the end plate 12 that connects the end portions of the side frames 11A and 11B.
The main body frame 13 is constituted by and. Both sides frame 11A,
Reference numeral 11B is made of aluminum, and engaging grooves 14A and 14B having an open upper surface are formed in the middle portions of the inner surfaces facing each other, and a first dovetail groove portion (an example of a fitted portion) having an upward opening is provided on the upper portion.
A and 15B are the second dovetail grooves 16A and 16B which are open downward at the bottom.
Are formed in the length direction of the side frames 11A and 11B, respectively. Then, the body frame 13 is fixed to the machine frame 1 side by screwing a bolt 17 passed through the left and right members 3 from below into a nut body 18 arranged in the second dovetail groove portions 16A and 16B. .

A pair of guide rails 20a and 20b are arranged in the length direction of the frame on one side frame 11A, on the inner surface side of the lower part thereof, via mounting portions 19a and 19b, respectively. The other side frame 11B is formed to have a low height without a mounting portion or the like. Both guide rails 20a, 20
Reference numeral b indicates a chain (an example of a driving body) 21 stretched between driven chain wheels provided at both ends of the main body frame 13, and supports and guides a chain 21 at a proper position on the main body frame 13. A drive device 22 including a chain wheel and a motor, and a control device 23 are provided.

A support frame 30 made of synthetic resin is disposed between the two side frames 11A and 11B, and the support frame 30 supports the roller 26 in a freely rotatable manner. The unit body 25 is configured, and the unit body 25 is arranged at a plurality of positions in the length direction of the main body frame 13. Here, the roller 26 is composed of a roller shaft 27 and a roller body 28 which is fitted onto the roller shaft 27 so as to freely rotate.

The support frame 30 includes a pair of connecting portions 31A and 31B which can be placed on the side frames 11A and 11B, and these connecting portions 31.
A pair of vertical plate portions 32A, 32B hanging from the inner ends of A, 31B
And a horizontal plate portion 33 continuously provided from the lower portion of the other vertical plate portion 32B toward the lower portion of the one vertical plate portion 32A, and continuously provided from the inner surface of the lower half of the one vertical plate portion 32A toward the inside. And the lower end is the horizontal plate 33
It is formed in a U shape in a front view by a pair of front and rear cover plate portions 34 connected to the edge portions of the.

Here, the connecting portions 31A, 31B are integrally provided with projecting portions 35a, 35b at two front and rear positions (a plurality of positions) on the bottom surface thereof. These protrusions 35a and 35b are formed in a circular shape,
The first dovetail groove portions 15A and 15B can be tightly fitted into the slit-shaped opening portions from above. In each case, one projection is formed, in this case, a through hole 36 is formed in the vertical direction on the front projection 35a at one connecting portion 31A and at the rear projection 35b at the other connecting portion 31B. ing.

Both connecting portions 31A and 31B are fixed to both side frames 11A and 11B via a fixture 37 so as to be detachable and positionally changeable (sliding) in the frame length direction.
Here, the fixture 37 is composed of a nut body 38 arranged in the first dovetail groove portions 15A and 15B, and a bolt 39 which is inserted into the through hole 36 from above and is screwed into the nut body 38. . Further, a concave support portion 40 capable of supporting the roller shaft 27 that is dropped from the upper side is formed in one of the connecting portions 31A, with the upper side and the inner side open, and the other connecting portion 31B has
A hole-shaped support portion 41 capable of supporting the roller shaft 27 inserted from the inside is formed with the inside opened.

The support frame 30 is provided with a transmission device 50 which is interlocked with the chain 21 and is capable of contacting the roller body 28 from below. That is, in the transmission device 50, the support frame 30 is also used as a main body, and a left and right bearing hole portion 51 is formed in a lower portion of one vertical plate portion 32A, and a left and right support shaft is formed in the bearing hole portion 51.
The support shaft 52 is vertically swingable by fitting one end of the support shaft 52. The other end of the support shaft 52 is fitted into a vertical recess 53 formed in the other vertical plate portion 32B to regulate the swing range of the support shaft 52 in the vertical direction.

A passive chain ring 54, which is an example of a passive body, is rotatably attached to the support shaft 52, and a transmission roller 55, which is an example of a transmission body, is fitted onto the protruding boss portion of the passive chain ring 54. The two 54, 55 are integrally rotatable. The passive chain wheel 54 always meshes with the chain 21 from above. The transmission roller 55 is made of urethane rubber, and the outer periphery of the transmission roller 55 can be brought into contact with and separated from the lower portion of the outer periphery of the roller body 28. Cylinder device using air to make contact and separation
56 is interposed between the cylinder rubber receiver 57 attached to the outer end of the support shaft 52 and the lateral plate portion 33. The transmission device 50 is constituted by the above 51 to 57.

The unit bodies 25 are arranged every other side in the lengthwise direction of the side frames 11A and 11B, and between the unit bodies 25, rollers are bracketed by a structure similar to that of an idle roller conveyor described later. It is arranged through. However, the drive roller conveyor 10 is all a unit body 25.
May be provided.

The idle roller conveyor 60 is shown in FIGS.
As shown in, the other side frame of the drive roller conveyor 10
A pair of left and right side frames having the same shape as 11B are symmetrically provided. That is, 61A and 61B are side frames, 62 is an end plate, 63 is a body frame,
64A and 64B are locking grooves, 65A and 65B are first dovetail groove parts (fitted parts), 66A and 66B are second dovetail groove parts, 67 is a bolt, and 68 is a nut body.

Above the side frames 61A and 61B, the support frame 30 is provided.
Bracket with the same structure as both connecting parts 31A, 31B in
69A and 69B are placed and fixed. Ie 70a,
70b is a protrusion, 71 is a through hole, 72 is a fixture, 73 is a nut body, and 74 is a bolt. Both brackets here 69
The roller 77 supported between A and 69B includes a roller shaft 78 and a roller body 79. And both brackets 69A,
69B is provided with a concave support portion 75 capable of supporting the roller shaft 78 dropped from the upper side. The transported object 80 is, for example, a pallet 81 and an article placed on the pallet 81.
It consists of 82 and. The pallet 81 may not be used for transportation.

The operation of the above configuration will be described below.
To assemble the drive roller conveyor 10 described above, first, the end plate
The left and right members 3 are formed by inserting the body frame 13 in which both side frames 11A and 11B are integrated by 12 through the bolt 17 and the nut body 18.
Fix it in place. Next, the unit body 25 is fixed at a predetermined position between the both side frames 11A and 11B with the chain 21 and the like arranged.

That is, the unit body 25 incorporating the transmission device 50 and the roller 26 has a vertical frame portion 32A, 32 of a supporting frame 30 thereof.
B to face the inner surfaces of the side frames 11A and 11B,
It is inserted from above between 11B. Near the end of this insertion, the lower ends of the vertical plate portions 31A, 31B are engaged with the locking grooves 14A, 14B from above, and the plurality of protrusions 35a, 35b provided on the lower surfaces of the connecting portions 31A, 31B are 1st dovetail groove 15A, 15
The slit-shaped opening portion of B is tightly fitted from above. The insertion ends when the lower surfaces of the connecting portions 32A and 32B come into contact with the upper surfaces of the side frames 11A and 11B, and at this time, the passive chain wheel 54 meshes with the chain 21 from above.

Next, the unit body 25 is composed of both side frames 11A and 11B.
The position is corrected by sliding it in the front-back direction. Before performing this position correction, the bolt 39 passed through the through hole 36 from above is loosely screwed into the nut body 38 arranged in the first dovetail groove portions 15A and 15B, and therefore, when the unit body 25 slides, the bolt 39 It moves integrally with the nut body 38. After the position correction is performed as described above, the bolt 39 is strongly screwed, so that the unit body 25 is fixed between the both side frames 11A and 11B.

The unit body 25 includes a support frame 30 and rollers 26.
The roller 26 is fixed to the support frame 30 fixed between the side frames 11A and 11B in the state where the roller 26 is fixed between the side frames 11A and 11B. In either case, the roller 26 is assembled into the support frame 30 by first connecting the other connecting portion.
By inserting the other end of the roller shaft 27 from the inside into the hole-shaped support portion 41 formed in 32B, and then dropping one end of the roller shaft 27 from above into the concave support portion 40 formed in one of the connecting portions 32A. Done.

A bracket 69 is provided between the unit bodies 25.
A roller 77 is arranged via A, 69B and the like. The work of removing the roller 26 from the support frame 30 and the work of removing the support frame 30 from the side frames 11A and 11B can be performed by the reverse operation to the above.

In assembling the above-mentioned idle roller conveyor 60, first, the main body frame 63 constituted by integrally forming the both side frames 61A and 61B by the end plate 62 is provided between the left and right members 3 via the bolt 67 and the nut body 68. Fix in place. Next, place the brackets 69A, 69 at predetermined positions on the upper surfaces of the side frames 61A, 61B.
Fix B. That is, the brackets 69A and 69B are lowered with respect to the upper surfaces of the side frames 61A and 61B, and the plurality of protrusions 70a and 70b provided on the lower surfaces are attached to the first dovetail grooves 65A and 65B.
Is tightly fitted into the slit-shaped opening portion of the above from above. Then, when descending, the lower surfaces of the brackets 69A and 69B are side frames.
The process ends by contacting the upper surfaces of 61A and 61B.

Next, the brackets 69A and 69B are formed on both side frames 61.
The position is corrected by sliding in the front-back direction with respect to A and 61B. Before performing this position correction, the bolt 74 passed through the through hole 71 from above is loosely screwed into the nut body 73 arranged in the first dovetail groove portions 65A, 65B, and therefore the bracket 69
When A and 69B slide, the bolt 74 and the nut body 73 move integrally. After adjusting the position as described above, bolt 74
Are strongly screwed together, so that the brackets 69A and 69B are both side frames 61.
It is fixed to A and 61B.

In this way, the roller 77 is incorporated between the brackets 69A and 69B fixed to the side frames 61A and 61B. That is, the concave support portion 75 formed on both brackets 69A and 69B.
In contrast, both ends of the roller shaft 78 are dropped from the upper side. The rollers from both brackets 69A and 69B
Work to remove 77 and bracket 69 from side frames 61A and 61B
The work of separating A and 69B can be performed by the reverse operation to the above.

The object 80 to be conveyed is conveyed by the conveyor device assembled as described above as follows. That is, the drive device 22 is actuated to move the chain 21, and the group of passive chain wheels 54 meshing with the chain 21 is supported as a spindle.
Rotate around 52. Then, the transmission roller 55 is integrally rotated together with the passive chain wheel 54. At this time, the rotational force of the transmission roller 55 is not transmitted to the roller 26 by contracting the cylinder device 56 and separating the transmission roller 55 from the roller body 28.

By extending the cylinder device 56 and bringing the transmission roller 55 into contact with the roller body 28 from below, the rotational force of the transmission roller 55 is transmitted to the roller 26 and the roller 26 is forcedly rotated. . Therefore, the transported object 80 supported across the drive roller conveyor 10 and the idler roller conveyor 60 is guided and transported by the guide body 6 by the driving force on the drive roller conveyor 10 side.

When the transmission roller 55 is brought into contact with the roller body 28 from below and the roller 26 is forcibly rotated,
When there is no transported object 80 on the roller 26, one end of the roller shaft 27 rises in the concave support portion 40 due to the contact force, so that the contact force does not apply a load to the roller shaft 27.
When the transported object 80 reaches the roller 26 that is forcibly rotated, the load of the transported object 80 causes the roller 26 to move.
The roller shaft 27 is lowered in the concave support portion 40,
Therefore, the roller main body 28 is pressed against the transmission roller 55 from above, and a strong pressure contact force acts between the two, so that the rotational force of the transmission roller 55 is reliably transmitted to the roller 26.

During such conveyance, each roller 26,
The frictional force acting on the 77 causes momental force to be generated in the connecting portions 31A, 31B and the brackets 69A, 69B via the roller shafts 27, 78. This momental force is generated by the first dovetail groove portions 15A, 15B.
Two protrusions 35a, 35b, 70 on B, 65A, 65B respectively
It can be received because a and 70b are fitted. Therefore, although the connecting portions 31A, 31B and the brackets 69A, 69B are fixed via the single fixing members 37, 72, respectively, they can receive the moment force that is likely to be generated by one point.

The transported object 80 is transported as described above. At that time, the transportation route is divided into a plurality of zones, and the transmission roller 55 is set for each zone based on the detection by the detection device of each zone. When the abutting movement or the separating movement is performed, the conveyed object 80 can be sequentially conveyed while being stored.

The idle roller conveyor 60 as in the above embodiment
When a conveyor device is configured by arranging the drive roller conveyor 10 and the drive roller conveyor 10 side by side, the distance between the conveyors 60, 10 can be freely adjusted, and the shape of the pallet 81 can be flexibly accommodated. However, in the present invention, the drive roller conveyor
10 rollers 26 are long, and this drive roller conveyor 26
A form in which the transport path is formed only by itself may be used.

In the above embodiment, the passive chain wheel 54 and the transmission roller 55 are used as the transmission device 50 for transmitting the power of the chain 21 to the roller 26. It may be a built-in format.

[0040]

According to the present invention having the above-described structure, the support frame is inserted into and removed from the both side frames from above, and the fixing tool is operated from above, so that the roller can be easily and easily attached and detached through the support frame. Therefore, maintenance and the like can be easily performed. Further, by moving the inserted support frame in the length direction of the side frame, it is possible to easily perform the alignment in the transport direction.

When there is no object to be conveyed on the roller that is forcibly rotated, one end of the roller shaft rises in the concave support portion due to the contact force of the transmission device with respect to the roller, and the load is not applied to the roller shaft by the contact force. It is possible to prevent damage to each part. Then, when the transported object reaches the roller, the roller shaft is lowered in the concave support portion by the load of the transported object, and the roller can be pressed against the transmission device from above, and a strong pressing force can be applied between them to transmit the power. The rotational force of the device can be reliably transmitted to the roller, and a sufficient rotational force can be applied to the roller.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a transmission device portion of a drive roller conveyor according to an embodiment of the present invention.

FIG. 2 is a plan view of the transmission unit.

FIG. 3 is a partially cutaway inner side view of one coupling portion of the transmission unit.

FIG. 4 is a partially cutaway inner side view of the other connecting portion of the transmission unit.

FIG. 5 is a vertical sectional front view of a transmission device portion of the idle roller conveyor.

FIG. 6 is a plan view of the transmission unit.

FIG. 7 is a partially cutaway inner side view of the bracket of the transmission unit.

FIG. 8 is a perspective view of the entire conveyor device.

FIG. 9 is a perspective view of a main part of the drive roller conveyor.

[Explanation of symbols]

 1 Machine frame 10 Drive roller conveyor 11A, 11B Side frame 13 Main body frame 15A, 15B 1st dovetail groove (fitted part) 21 Chain (drive body) 22 Drive device 25 Unit body 26 Roller 27 Roller shaft 28 Roller body 30 Support Frame 31A, 31B Connection part 32A, 32B Vertical plate part 33 Horizontal plate part 37 Fixture 40 Concave support part 41 Hole support part 50 Transmission device 54 Passive chain wheel (passive body) 55 Transmission roller (transmission body) 56 Cylinder device 60 Idler roller conveyor 61A, 61B Side frame 63 Main body frame 65A, 65B 1st dovetail groove (fitted part) 69A, 69B Bracket 72 Fixing device 75 Concave support 77 Roller 78 Roller shaft 79 Roller body 80 Transported object

Claims (1)

[Claims] 1. A drive roller conveyor comprising a main body frame having a pair of left and right side frames, a group of rollers disposed between both side frames, and a driving body disposed along at least one side frame. A support frame that can be arranged between the two side frames is mounted between the pair of connecting parts that can be placed on the side frames, a pair of vertical plate parts that hang down from the inner ends of these connecting parts, and between the lower parts of these vertical plate parts. The supporting frame is formed in a U shape with the lateral plate portion positioned, and the supporting frame is detachably fixed to the side frame through a fixture that acts on both connecting portions. A concave support portion that can support the roller shaft to be dropped is formed, and a hole support portion that can support the roller shaft that is inserted from the inside is formed on the other side, and the support frame is interlocked with the driving body and A drive mechanism characterized in that the roller is provided with a transmission device that can be contacted from below. La conveyor.