JPS6124493Y2 - - Google Patents

Description

[Detailed description of the invention] A pipe conveyor is known in which a circulating endless belt is rolled into a pipe shape using an appropriate device, and powder is wrapped in the pipe and conveyed in any direction. Figures 3 to 3 show an example thereof.

As shown in FIG. 1, a flexible endless belt 1
is wrapped around the upper drive drum 2 and the lower drive drum 3.

Reference numeral 4 denotes support frames arranged at regular intervals by a frame 5, which is divided into an upper chamber 4a and a lower chamber 4b by a horizontal connecting rod 4c, as shown in FIG. 1a, and a return belt 1b passes through the lower chamber 4b.

In both the upper and lower chambers 4a, 4b, a plurality of shape-retaining rollers 6 parallel to the support frame 4 are provided with pivot plates 7.
The pivots are arranged in an annular row on the same circumference. Third
As shown in the figure, the outgoing belt 1a is rolled out flat along the upper surface of the lower driven drum 3.
is gradually bent into a trough shape by support rollers 8 and 9 that support the lower and side surfaces of the belt 1a, respectively.

During this time, the hopper 10 above the driven drum 3
As a result, the powder or granular material 11 to be conveyed is dropped onto the outgoing belt 1a.

Next, the outgoing belt 1b is inserted into the upper chamber 4 of the support frame 4.
a, and guided by the shape-retaining rollers 6, the left and right end portions of the outgoing belt 1a overlap each other upward, and are rolled into a pipe shape, and the conveyed object 11 is wrapped therein.

The outbound belt 1a that wraps around the transported object 11 is
It travels in the upper chamber 4a of each support frame 4 while maintaining its pipe shape with its periphery supported by shape retaining rollers 6, and escapes from the support frame device A at the upper end near the upper drive drum 2. Belt 1a is the third
The conveyed object 11 is unfolded while passing through a belt unfolding device (not shown), which is configured approximately front and rear symmetrically with the illustrated wrapping device, and the conveyed object 11 is thrown into the receiving box 12.

The return belt 1b that has passed through the driving drum 2 is rolled into a pipe shape as described above, passes through the lower chamber 4b of each support frame 4, returns to the driven drum 3, and circulates.

However, in such a conventional device, due to its structure, a gap 13 is created between the opposing ends of the adjacent shape retaining rollers 6, 6, so that errors in dimensional accuracy during manufacturing of the shape retaining rollers 6, If the traveling belt 1a is twisted due to misalignment of the mounting position or uneven wear of the shape retaining roller 6 or the pivot piece 7 during long-term use, the outer overlapping edge of the belt 1a may fall into the gap 13. It may bite or get caught on the end surface of the roller 6.
This may damage the endless belt 1 or the shape-retaining roller 6, or cause the conveyed object 11 to spill.

The present invention relates to a pipe-shaped belt supporting device that eliminates the above-mentioned drawbacks, and the shape-retaining rollers 6
Immediately before or after, use a similar shape-retaining roller,
They are arranged in a staggered manner when viewed from the front.

That is, as shown in FIG. 4, the sub-support frame 24 is basically the same as the support frame 4, but the position of each shape-retaining roller 26 is different from that of the support frame 4. , are arranged in an overlapping state immediately before or after the support frame 4.

Note that each shape retaining roller 26 in the sub-support frame 24
The support method is the same as that for the support frame 4, so a detailed explanation thereof will be omitted.

Thus, according to the present invention, as shown in FIG. 5, the shape-retaining rollers in the other support frame are located immediately before or after the gap between adjacent shape-retaining rollers in the other support frame.

Therefore, as in the conventional belt, as the pipe-shaped belt twists, the overlapping side edge of the belt may enter the gap between the shape-retaining rollers arranged in an annular manner.
It does not get caught on the edge of the shape retaining roller, and smooth operation can be expected.

[Brief explanation of the drawing]

FIG. 1 is a side view illustrating a conventional pipe conveyor, FIG. 2 is an enlarged longitudinal sectional front view along the - line in FIG. 1, and FIG. An enlarged line plan view, FIG. 4 is a front view of the sub-support frame added to the pipe conveyor illustrated in FIG. 1 based on the present invention, and FIG. It is a front view showing the arrangement state of. 1...Endless belt, 1a...Outbound belt, 1b
... return belt, 2 ... drive drum, 3 ... driven drum, 4 ... support frame, 4a ... upper chamber, 4b ...
Lower chamber, 4c...Horizontal connecting rod, 5...Frame, 6
...shape retaining roller, 7 ... pivot plate, 8, 9 ... support roller, 10 ... hopper, 11 ... conveyed object,
12... Receiving box, 13... Gap, 24... Sub-support frame, 26... Shape retaining roller.

Claims (1)

[Scope of utility model registration request] In a pipe conveyor in which an endless belt is rolled into a pipe shape using an appropriate device and an object to be conveyed is wrapped inside and transported, a plurality of shape-retaining rollers are arranged in a ring to surround the belt rolled into a pipe shape. The units are arranged side by side, overlapping back and forth at each important point of the belt, and the shape retaining rollers in each row before and after the belt are staggered when viewed from the front. Or a support device for a pipe-shaped belt in a pipe conveyor, in which a shape-retaining roller in the other row is positioned immediately after.