JPH038644Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a belt conveyor device used when there is a height difference between the carry-in position and the carry-out position of objects to be conveyed.

(Prior art) For example, as shown in FIG. 7, when conveying objects from process A to process B, if process B on the unloading side is higher by dimension h than process A on the loading side, both A belt conveyor device 20 inclined upward in the process B direction is provided in between.

However, when using the belt conveyor device 20 that is uniformly inclined in this manner, the conveyed object is held in an inclined state by a gripping mechanism such as a robot hand or a chuck at the carry-out position, making it difficult to perform subsequent operations. It becomes complicated.

Therefore, as shown in FIG. 8, a belt conveyor device may be considered in which the central portion is bent by, for example, a guide roller 26 so that the discharge side is horizontal. Although such a device has the advantage that the conveyed object is gripped by the gripping mechanism in a horizontal state on the carry-out side, the conveyed object is placed in an inclined state on the carry-in side, making the loading work cumbersome. Due to poor stability when placed, there is a risk that the transported object may fall over.

On the other hand, as shown in FIG. 9, for example, a belt conveyor device 22 can be considered in which bent portions 22X are provided at two locations by guide rollers 26, and the carry-in side and the carry-out side are formed horizontally.

However, in such a device 22, if the endless belt 23 is simply stretched between the driving roller 24 and the driven roller 25, the endless belt 23 cannot be stretched through the shortest distance as shown by the imaginary line 23X. Therefore, it is necessary to provide a belt holding plate 27 for wrapping the endless belt 23 along the concave side of the bent portion 22X.

As described above, by providing the presser plate 27, the endless belt 23 can be stretched in the proper state shown by the solid line in FIG. 9 along the concave side of the bent portion 22X, but as shown in FIG. belt 2
The width dimension W of belt 2 cannot be used as an effective mounting dimension, and the effective dimension becomes small as shown by W1.
3 must be formed wide. Therefore,
This poses a problem in that the device is large in size and cannot transport objects having a width larger than the width W of the belt 23.

(Purpose of the invention) This invention was made to solve the above-mentioned problem, and is used when there is a height difference between the loading position and the unloading position of the transported object.
It is an object of the present invention to provide a belt conveyor device in which horizontal portions are formed on both sides of the conveyance and the entire width of the belt can be utilized as an effective loading dimension.

(Structure of the invention) The belt conveyor device according to the invention has a driving roller and a driven roller that are rotatably supported by a frame member having a vertically bent part, and an endless belt consisting of two layers, a front layer and a back layer. The front layer and the back layer are joined to each other leaving a certain unjoined part continuous in the longitudinal direction, and at least the conveyed object is placed on the concave side of the bent part of the frame member. A guide member provided on the side is slidably inserted into the unjoined portion between the front layer and the back layer of the belt.

Therefore, the belt can be stretched along the concave side of the bent portion of the frame, and the entire width of the belt becomes the effective mounting dimension.

(Example) Hereinafter, an example of this invention will be described with reference to the drawings. Fig. 1 is a partially sectional plan view showing an embodiment of the belt conveyor device of this invention, and Fig. 2 is a sectional view thereof.
1 is a driving roller, 2 is a driven roller, these rollers 1 and 2 are rotatably supported by a frame member 3, and an endless belt 4 is stretched around them.
It is rotationally driven by a drive device 1A.

The belt 4 is made of polyester, for example, and consists of two layers: a surface layer 4a and a back layer 4b. They are joined to each other leaving an unjoined portion 4c.

In this embodiment, the frame members 3 include a single frame 3A on the drive roller 1 side and a single frame 3A in the middle.
B. It is formed by the frame unit 3C on the driven roller 2 side, and the fork portion 6 formed at the inner end of the frame unit 3A and the fork plate 7 formed at one end of the intermediate frame unit 3B are arranged in the vertical direction. The fork plate 7 formed at the other end of the intermediate frame unit 3B and the fork unit 6 formed at the inner end of the frame unit 3C form a vertically bent unit 5Y. The frame unit 3A and the frame unit 3C are held horizontally, and the intermediate frame unit 3B is inclined upward from the frame unit 3C to the frame unit 3A.

As shown in FIG. 3, the bent portion 5X has a fork portion 6 and a fork plate 7 connected to each other by screwing screw bodies 10 into both ends of the shaft 9 through holes 8 formed in each, The above bent part 5Y
The same is true for . In this way,
Single frame 3A, 3C and single intermediate frame 3B
are fixedly connected to each other.

A guide roller 11 is rotatably attached to the shaft 9, and the back layer 4b of the belt 4 on the concave and convex sides of the bent portion 5X is in contact with the circumferential surface of the guide roller 11. This is also the case.

In FIG. 4, 13 is a guide member made of synthetic resin, and the bent portions 5X and 5 of the frame member 3 are
On the concave side in Y, it is attached to the frame member 3 by a screw body 12, and the unjoined part 4 between the surface layer 4a and the back layer 4b is attached from the outside in the width direction of the belt 4.
It is slidably inserted into c.

In the above configuration, by slightly loosening the screw tightening of the screw body 10 shown in FIG. 3, the bent portions 5X and 5Y become rotatable, and the inclination angle of the intermediate frame unit 3B can be adjusted as appropriate.

In addition, in FIG. 2, the single frame 3A on the driving roller side and the single frame 3C on the driven roller side are held horizontally, and the intermediate frame 3B extends from the single frame 3C on the driven roller side to the single frame 3A on the driving roller side. Guide members 1
3 is slidably inserted into the unjoined part 4c between the surface layer 4a and the back layer 4b of the belt 4, so that the belt 4 is in the proper state along the concave sides of the bent portions 5X and 5Y of the frame 3. It is spanned over and rotated while maintaining this state.

Therefore, since the conveyed object (not shown) is placed on the surface of the belt 4 without tilting on the carry-in side (the single frame 3C side) and the carry-out side (the frame single body 3A side), the conveyed object Loading and unloading of objects is carried out properly, and the transported objects do not fall over. Moreover, since other members do not interfere with the surface of the belt 4, the entire width of the belt 4 can be utilized as an effective mounting dimension, and the device can be made more compact.

In the above embodiment, the frame member 3 is formed by combining three frame units 3A, 3B, and 3C, but the frame member 3 may be formed by a series of members. In this case, the tilt angle cannot be adjusted.

Further, as shown in FIG. 4, the surface layer 4 of the belt 4
The surface layer 4a and the back layer 4b are directly bonded to each other, leaving an unbonded portion 4c, but the surface layer 4a and the back layer 4b may be bonded to each other via a spacer 14, as shown in FIG.

Further, in the above embodiment, the guide members 13 are inserted into both ends of the belt 4 in the width direction, but the invention is not limited to this, and as shown in FIG.
Both ends in the width direction are joined, and the center part is the unjoined part 4c.
Similar effects can also be achieved by inserting a T-shaped guide member 13 into this portion.

Furthermore, in FIG. 2, the guide member 13 is
Although the description is given using an example in which the bent portions 5X and 5Y are provided on each of the concave sides, this invention is not limited to the above-mentioned embodiment. Even if the guide member 13 is attached only to the bent portion 5Y side, the same effect as in the above embodiment can be obtained.

Further, although a belt conveyor device having two bent portions 5X and 5Y is described, the number of bent portions is not limited.

(Effect of the invention) As explained above, according to this invention, the belt can be hung along the concave side of the bent part of the frame while the entire width of the belt is not restricted and can be used as an effective mounting dimension. can be handed over.

[Brief explanation of drawings]

Fig. 1 is a partially sectional plan view of an embodiment of this invention, Fig. 2 is a - sectional view in Fig. 1, Fig. 3 is a - sectional view in Fig. 2, and Fig.
The figure is a sectional view of FIG. 2, FIG. 5 is a sectional view showing another embodiment, FIG. 6 is a sectional view showing still another embodiment, and FIG. 7 is a schematic side view showing a conventional belt conveyor device. FIG. 8 is a schematic side view showing another example, FIG. 9 is a schematic side view showing still another example, and FIG. 10 is a view taken in the direction of arrow A in FIG. 1... Drive roller, 2... Followed roller, 3...
Frame member, 4... Belt, 4a... Surface layer, 4
b...back layer, 4c...unjoined part, 5X, 5Y...
Bent portion, 13...Guide member, Q...Longitudinal direction.

Claims (1)

[Scope of utility model registration request] A belt conveyor device in which an endless belt is stretched around a drive roller rotationally driven by a drive device and a driven roller provided corresponding to the drive roller, and the drive roller and the driven roller are The belt is rotatably supported by a frame member having a vertically bent part, and the belt is composed of two layers: a front layer and a back layer, and the front layer and the back layer have a certain unjoined part continuous in the longitudinal direction. A guide member is attached to at least the conveyed object loading side of the concave side of the bent portion of the frame member, and this guide member slides into the unjoined portion between the front layer and the back layer. A belt conveyor device characterized in that it is movably inserted.