JP2582944B2 - Conveyor frame cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[Object of the invention]

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover for a conveyor frame.

[0003]

2. Description of the Related Art A conventional cover for a conveyor frame is disclosed in Japanese Utility Model Laid-Open Publication No. 63-107318.

This cover is a conveyor frame having a substantially C-shaped cross section and having a side surface opened along the longitudinal direction and having a locking piece and a support piece (upper and lower lips) opposed to each other at an upper portion and a lower portion of the opening. To be attached to the opening,
An engagement groove (U-shaped groove) is formed on the upper edge and the lower edge of the long plate body with respect to the locking piece and the support piece (upper and lower lips).

Then, the cover is lifted obliquely, and the upper engaging groove (U-shaped groove) of the cover is fitted obliquely from below into the engaging piece (upper lip) of the conveyor frame. By lowering, the engagement groove (U-shaped groove) on the lower side of the cover can be fitted to the support piece (lower lip) of the conveyor frame. Can be easily removed.

[0006]

However, in the above-described conventional conveyor frame cover, the upper engaging groove (U-shaped groove) of the cover is obliquely attached to the engaging piece (upper lip) of the conveyor frame from below. Since the fitting is performed, the necessary clearance between the width dimension of the engagement groove (U-shaped groove) and the thickness dimension of the locking piece (upper lip) is increased, so that the cover attached to the conveyor frame rattles. In addition, there is a problem that the cover vibrates when the conveyor is driven and generates noise.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to eliminate the backlash of a conveyor frame cover as described above, while ensuring the ease of mounting and removing the cover. It is the purpose.

[Configuration of the Invention]

[0009]

According to the present invention, there is provided a substantially C-shaped cross section having a side surface opened along a longitudinal direction, and a locking piece 5 and a support piece 6 which are opposed to each other at an upper portion and a lower portion of the opening 7. A cover 31 for a conveyor frame to be mounted in the opening 7 of the conveyor frame 1.
2, 33, and the upper engaging groove 32 for the locking piece 5 is formed.
A recess 32b is formed in one inner surface 32a of the locking piece 5 with respect to the inner surface 5a.

[0010]

According to the present invention, after the upper engaging groove 32 of the cover 31 is fitted to the locking piece 5 of the conveyor frame 1 from below, the cover 31 is lowered vertically.
The lower engaging groove 33 can be fitted to the support piece 6 of the conveyor frame 1, whereby the cover 31 can be easily attached and the cover 31 can be easily removed.

When the engagement groove 32 on the upper side of the cover 31 is fitted to the locking piece 5 of the conveyor frame 1, the cover 31
Is inclined, and the direction in which the locking piece 5 bites into one inner side surface 32a of the engagement groove 32 is provided. However, since the inner side surface 32a has the concave portion 32b, the locking piece 5 does not bite.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a conveyor frame cover according to an embodiment of the present invention.

2 and 3, reference numeral 1 denotes a pair of long conveyor frames on both sides. The pair of conveyor frames 1 on both sides are formed by forming an iron plate, and as shown in FIG. The upper plate 3 and the lower plate 4 are bent at right angles in the same direction from the upper end and the lower end, and the locking piece 5 and the support piece 6 are directed downward from the tips of the upper plate 3 and the lower plate 4. It has a substantially C-shaped cross section which is bent at right angles to face upward, and has an opening 7 along the length direction between the locking piece 5 and the supporting piece 6.

The pair of conveyor frames 1 are arranged in parallel with the board portion 2 inside, and are integrated by connecting a plurality of portions of both the board portions 2 with a horizontal connecting rod 8 shown in FIG. I have.

A drive pulley 11 and an end pulley 12 are supported between upper portions of a front end and a rear end of the pair of conveyor frames 1.
A large number of support rollers 13 are rotatably supported between the upper portions of the pair of conveyor frames 1 at appropriate intervals, and are located between the upper portions of the pair of conveyor frames 1. An endless flat belt 14 is looped around.

As shown in FIGS. 1 to 3, one side of the conveyor frame 1 corresponds to the drive pulley 11 described above.
A board 17 is mounted on the outer surface of the vertically opposite locking piece 5 and supporting piece 6 at the front end.
The speed reducer 19 of the motor 20 with the speed reducer 19 is attached via the
21 is connected, thereby driving the motor 20,
The shaft 21 rotates counterclockwise in FIG. 3 via the speed reducer 19, and the drive pulley 11 integrated with the shaft 21 rotates, so that the flat belt 14 rotates in the same direction. ,
When moving from above the end pulley 12 to above the drive pulley 11 via above a number of support rollers 13, goods are conveyed.

Further, the pair of conveyor frames 1 on both sides are provided.
Since the opening 7 is exposed to the outer surface except for the substrate 17 portion of the motor 20 as it is, a long plate-shaped cover 31 is attached to the opening 7.

The cover 31 is formed by extruding a light metal such as aluminum. As shown in FIG. 1, the upper edge and the lower edge of the cover 31 are formed with engaging grooves 32 for the engaging pieces 5 and the supporting pieces 6 of the conveyor frame 1. , 33 are formed along the length direction of the cover 31, and the upper engagement groove 32 for the locking piece 5 is formed.
One inner side surface 32a of the locking piece 5 with respect to the inner side surface 5a is formed in an arcuate concave portion 32b as a whole.

A pair of upper and lower mounting grooves 36 and 37 are formed on the outer surface of the cover 31 along the longitudinal direction of the cover 31, and both sides of the pair of mounting grooves 36 and 37 in the width direction on the front surface side. Locking edges 38 projecting from the portions, that is, both upper and lower portions, narrow the widths of the mounting grooves 36, 37.

When the cover 31 is attached, the cover 31 is inclined with respect to the conveyor frame 1 as shown by a solid line in FIG. 1A and lifted up as shown by a two-dot chain line. After fitting the engagement groove 32 on the upper side of 31 into the locking piece 5 of the conveyor frame 1 from diagonally below, FIG.
With the cover 31 vertical as shown by the two-dot chain line in (B),
By lowering as shown by the solid line, the lower engaging groove 33 of the cover 31 can be fitted to the support piece 6 of the conveyor frame 1, whereby the cover 31 can be easily attached and the reverse operation can be performed. Thus, the cover 31 can be easily removed.

When the engagement groove 32 on the upper side of the cover 31 is fitted to the locking piece 5 of the conveyor frame 1, FIG.
As shown in FIG. 3A, the cover 31 is oblique, and the locking piece 5 is inserted into one of the inner surfaces 32a of the engaging groove 32. The inner surface 32a of the engaging groove 32 becomes a concave portion 32b. As a result, the locking piece 5 does not bite, and therefore, the width of the upper end of the engagement groove 32 is made closer to the thickness of the locking piece 5, and is related to the width of the upper end of the engagement groove 32. When the clearance between the stop piece 5 and the thickness dimension can be minimized, and when the lower engaging groove 33 of the cover 31 is fitted to the support piece 6 of the conveyor frame 1, FIG. ), The cover 31 may be vertical, so that the clearance between the width dimension of the lower end of the engaging groove 33 and the thickness dimension of the support piece 6 can be minimized from the beginning, and as a result, the conveyor frame The cover 31 attached to 1 does not rattle, and the cover 31 does not vibrate and generate noise when the motor 20 is driven.

In the cover 31, the inner wall portion 41 and the outer wall portion 42 forming the upper engagement groove 32 have an inner wall portion 41.
Is formed higher (longer in the vertical direction) than the outer wall portion 42, and the inner wall portion 43 is lower than the outer wall portion 44 due to the relationship between the inner wall portion 43 and the outer wall portion 44 that constitute the lower engagement groove 33. (Short in the vertical direction), and furthermore, the engagement groove on the upper side of the cover 31
The length L from the bottom of 32 to the tip of the inner wall 43 of the lower engagement groove 33 is the width of the opening 7 of the conveyor frame 1, that is, the length from the tip of the locking piece 5 to the tip of the support piece 6. The dimensions are slightly shorter than M.

Further, the pair of conveyor frames 1 on both sides is provided.
The mounting grooves 36 and 37 of the cover 31 attached to the opening 7 of FIG.
As shown in the figure, a plurality of nuts 47 are inserted from the ends of the cover 31 and held inside the mounting grooves 36 and 37, and a plurality of brackets 48 are attached to the plurality of nuts 47 with bolts 49. A pair of guide rails on both sides of the bracket 48
The pair of guide rails 50 is disposed above both sides of the flat belt 14, and the pair of guide rails 50 is provided.
50 allows the articles on the flat belt 14 to be guided.

In addition, in the mounting grooves 36 and 37 of the cover 31, in addition to the guide rail 50, a sensor for detecting an article on the flat belt 14 and the like are mounted.

[0025]

As described above, the cover for the conveyor frame of the present invention can be easily attached and detached, and the cover attached to the conveyor frame does not rattle, so that the cover can be used when the conveyor is driven. Does not vibrate and generate noise.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of a conveyor frame cover according to the present invention.

FIG. 2 is a plan view of a belt conveyor using the cover of the embodiment.

FIG. 3 is a side view of the belt conveyor.

FIG. 4 is an enlarged front view of a part of the belt conveyor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyor frame 5 Locking piece of conveyor frame 1 5a Inner side surface of locking piece 5 6 Supporting piece of conveyor frame 1 7 Opening of conveyor frame 1 Covers 32, 33 Engagement groove of cover 31 32a Engagement groove 32 Inner side 32b Inner side 32a recess

Claims (1)

(57) [Claims] 1. A conveyor mounted in the above-mentioned opening of a conveyor frame having a substantially C-shaped cross section, having a side surface opened in a longitudinal direction and having a locking piece and a supporting piece opposing each other above and below this opening. A frame cover, wherein an upper end edge and a lower end edge are formed with engagement grooves for the locking pieces and the support pieces, and one of the upper engagement grooves for the locking pieces with respect to the inner surface of the locking pieces. A cover for a conveyor frame, wherein a concave portion is formed on a side surface.