JP2001240227A - Conveyor belt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent module links from floating up when they are engaged with teeth of a sprocket by inserting a connection pin into a pin insertion hole in a boss part of the module links provided on an outer side of a conveyor belt when the conveyor belt is formed by arranging many module links in the direction of belt width and the number of links is increased to increase its width. SOLUTION: This conveyor belt 1 is constituted such that a plurality of lines of module links 4 having a plurality of boss parts 3 forming the pin insertion hole 2 and arranged in the direction of belt width are arranged in adjacent in the longitudinal direction of the belt. The lines of module links arranged in adjacent are formed by forming the boss parts like a finger assembly and connecting them by the connection pin 5, and the module links provided on the outer side of the belt are mutually connected by a holding pin member 5A having a projecting part for preventing coming off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor belt in which a plurality of module links arranged in the width direction and the longitudinal direction of a belt are connected by connecting pins in the longitudinal direction of the belt. Food,
The present invention relates to a conveyor belt capable of increasing and widening a width suitable for carrying a medicine, a bottle, and the like.

[0002]

2. Description of the Related Art A plurality of engineering plastic module links, each having a substantially flat front surface and a concave portion formed on the rear surface so that teeth of a sprocket and a boss engage with each other, are arranged in the width and longitudinal directions of the belt. Then, module links adjacent in the belt longitudinal direction were connected by connecting pins,
Conveyor belts that can be increased and widened are known as disclosed in Japanese Utility Model Registration No. 25515150.

FIGS. 5 to 8 show a conventional conveyor belt. The conveyor belt 31 has a pin insertion hole 32.
A plurality of module links 34 having different lengths having a plurality of boss portions 33 formed with a plurality of boss portions 33 are formed by connecting the boss portions 33 by a single connecting pin 35 with a finger assembly.
Since the connecting pins 35 are accommodated between the stoppers 38 provided on the outer end walls 34 'of the module links 34 on both outer sides of the belt, the connecting pins 35 are shorter than the width of the belt. The module link 34 has a rectangular shape in which the boss 33 is provided in a zigzag manner, has a reinforcing rib and a concave portion 36 on the back surface, and has a flat plate shape or a net shape when viewed from above the front surface side. The conveyor belt 31 includes a plurality of module links 34 arranged side by side in the belt width direction to form a row, and the module links 34 are formed adjacent to each other in the belt longitudinal direction. They are arranged in bricks. Outer end wall 3 of module link 34 arranged in belt width direction
4 ', a long hole 37 is formed. As shown in FIGS. 5 and 6, a stopper is formed in the long hole 37 formed in the outer end wall 34' of the module link 34 provided outside the belt. 38 is fitted from the back side of the belt,
Escape is prevented. This conveyor belt 31
The belt width is adjusted by increasing the number of module links 34 arranged in rows in the width direction of the belt so that the belt width can be increased, and the number of module links 34 provided in the belt longitudinal direction can be increased. The belt can be increased. The conveyor belt 31 is stretched over a plurality of thin sprockets 39 provided at predetermined intervals on a shaft, and driven by engaging the boss portions 33 with the teeth of the sprocket 39, thereby obtaining a belt width. The vehicle travels while sliding on a plurality of narrow guide rails 40 provided in the directions (see FIG. 8).

[0004]

When the conveyor belt 31 constructed as described above is manufactured by changing the belt width, the connecting pins 35 are adjusted in accordance with the belt width each time.
If the length of the connecting pin 35 is determined, it takes a long time to manufacture and the manufacturing efficiency is low. In this case, the connecting pin 35
Considering the manufacturing tolerance of the length of each module link 34 specified on the manufacturing drawing and the manufacturing tolerance of the connecting pin length,
Based on the number of module links 34 arranged in the belt width direction and the distance S (S in FIG. 7) from the outer end of the belt to the stopper 38, the module link is manufactured by the following formula. Connection pin length = module link length × number of module links−2S−manufacturing tolerance of connection pin length / 2

However, in the case of a conveyor belt having a large width, the number of module links 34 provided in a row of the belt is large. Therefore, when a conveyor belt is actually formed by combining the module links 34, the number of connected links is smaller than the width of the belt. The length of the pin 35 is apparently shortened, and a gap L is often formed between the stopper 38 fitted on the module link 34 at the outer end of the belt and the end surface of the connecting pin 35 (see FIG. 5). .). Then, this gap L
Boss part 3 of module link 34
The connection pin 35 is no longer hooked on the pin insertion hole 32 formed in 3, and the end of the module link 34 can freely move in the vertical direction. When the conveyor belt 31 is operated in such a state, as shown in FIG. 8, the tension is applied to the conveyor belt 31 so that the boss portion 33 does not engage with the teeth of the sprocket 39 and the module link 34 However, there is a problem that a phenomenon occurs in which the outer end of the rises from the normal position. Consequently, the guide rail 40
The conveyor belt 31 which has traveled along the surface contacts the dead plate 41 for transferring the conveyed article when the drive side sprocket 39 is rotated at the part of the raised module link 34 ″, and this dead plate 4
(1) The end of the module link is bitten by the sharp corner of the leading end, and there is a problem that a situation such that the conveyor belt is cut, the dead plate 41 is damaged, and the like cannot be easily recovered.

Therefore, the present invention solves the above-mentioned problems of the prior art, and when forming a conveyor belt by arranging a large number of module links in the belt width direction, when the number of links is increased for widening, Provided is a conveyor belt in which a connecting pin is inserted into a pin insertion hole of a boss portion of a module link provided outside the belt, so that the module link does not rise up when engaging with teeth of a sprocket. With the goal.

[0007]

In order to achieve the above object, the present invention provides a module link having a plurality of bosses having pin insertion holes formed therein, the plurality of bosses being arranged in the width direction of the belt. A plurality of rows are arranged adjacent to each other in the longitudinal direction of the belt, and the module links of the adjacently arranged rows are adjacent to each other in the belt longitudinal direction in a conveyor belt formed by connecting the boss portions in a finger-set shape with connecting pins. The connecting pins for connecting the module links in the two rows include at least two pin members, and the end faces of the pin members are at least one contact with the contact portions of the module links arranged in the adjacent row. The module link, which is abutted over the two bosses and is provided outside the belt, is a holding pin member having a protrusion for preventing the pin member from coming off. The conveyor belt is further connected (claim 1), and the connecting pins in the conveyor belt are composed of two holding pin members and a main body pin member located between the two holding pin members. (Claim 2) Further, a flange-shaped stopper piece for preventing pin insertion is provided at one end of the holding pin member in each of the conveyor belts (Claim 3).

[0008]

According to the conveyor belt having the above-described structure, a plurality of module links having a plurality of bosses each having a pin insertion hole are arranged in a plurality of rows in the longitudinal direction of the belt. The module links of the adjacently arranged rows are formed by connecting the bosses with a connecting pin with the boss portion in the form of a finger, and the connecting pins connecting the module links of the two adjacent rows in the belt longitudinal direction are By including at least two pin members, when the number of module links arranged in the width direction of the belt, the number of rows of module links, and the number of pin members constituting the connecting pins are increased or decreased, the width of the belt and The length is adjusted arbitrarily. The end faces of these pin members abut against the abutting portions of the module links arranged in adjacent rows beyond at least one boss, and the module links provided on the outside of the belt are used to prevent slipping. The pin member is inserted into the pin insertion hole of the boss portion at the contact portion between the module links and outside of the belt by being connected by the holding pin member having the protrusion of The lifting of the module link is prevented. Also, at one end of the holding pin member in each of the conveyor belts, a flange-shaped stopper piece for preventing pin insertion is provided, so that when the pin member is inserted from outside the belt, it is not pushed too much. In addition, when the module link and the pin member are increased or decreased, if a driver or the like is inserted between the flange-shaped stopper piece and the module link outer end wall, the holding pin member can be easily removed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on examples with reference to FIGS. FIG. 1 shows the back side of the conveyor belt 1. The conveyor belt 1 is made of engineering plastics, for example, a plurality of module links 4 made of, for example, polyacetal or polyamide, arranged in a belt width direction and a longitudinal direction and arranged in a brick-stacked manner. , And are connected by connecting pins 5.

As shown in FIGS. 1 and 2, the module link 4 constituting the conveyor belt 1 has a pin insertion hole 2
Is formed in a rectangular shape having a plurality of bosses 3 formed in a zigzag shape on both sides, and module links 4 adjacent in the longitudinal direction of the belt are connected to the pin insertion holes 2 by making the bosses 3 into a finger assembly. 5 and are connected.

In the conveyor belt 1, a plurality of module links 4A and 4B having different lengths (hereinafter, simply referred to as "module links 4" when collectively referring to module links) are arranged in a plurality in the width direction of the belt. The module links are arranged adjacent to each other in the longitudinal direction of the belt, and a plurality of module links are arranged side by side in the width direction of the belt to form a row. A plurality of module links are arranged in a brick stack by shifting the positions of the contact portions T ′ of the module links in the row. In this embodiment, the short-length module link 4A is half the length of the module link 4B.
Is arranged in the lower row in the order of short module links 4A, a plurality of long module links 4B, and short module links 4A in the belt width direction, and the upper row is the module links 4B. It consists only of:

The connecting pins 5 for connecting the module links 4 in two rows adjacent to each other in the longitudinal direction of the belt include two holding pin members 5A provided on both outer sides of the belt and, if necessary, the two holding pins 5A. It comprises a plurality of pin members composed of a main body pin member 5B provided between the pin members 5A. The cross-sectional shape of the connecting pin 5 including the holding pin member 5A and the main body pin member 5B is not particularly limited. In the present embodiment, the connecting pin 5 has a substantially D shape as shown in FIG. The holding pin member 5A is for connecting the module link on the outer side of the belt, and is a projection for preventing the pin member from coming out, which is provided between the outer end wall 4 'of the module link 4 and the adjacent boss 3A. It has a flat part 5 'on its flat surface 5', at one end of which is provided a collar-shaped stopper piece 7 which prevents the pin from being pushed too far and which is convenient for removal. 7
Is stored in a recess 8 formed in the outer end wall 4 ′ of the module link 4 disposed outside the belt. The holding pin members 5A are mainly injection molded resin products, and the main body pin members 5B are mainly extruded resin products. These pin members are preferably made of the same material, and these pin members 5A and 5B are
It is preferable that the length spans a plurality of bosses 3,
In particular, when the holding pin member 5A is relatively long, it is easy to hold by hand during maintenance and detachment is easy.

The module link 4 is, as described above,
It is a rectangular shape having a plurality of boss portions 3 in which pin insertion holes 2 are formed in a zigzag shape on both sides.
In all of the bosses 3A provided on the upper side of the module link 4, a D-shaped pin insertion hole 2A having the same shape as the cross section of the connecting pin 5 is formed, and in all of the bosses 3B provided on the lower side, A circular pin insertion hole 2B is formed. When the connecting pin 5 having a D-shaped cross section is inserted into the pin insertion holes 2A and 2B, the module link 4 does not rotate with respect to the connecting pin 5 inserted into the D-shaped pin insertion hole 2A, but the circular pin is inserted. The module link 4 rotates freely with respect to the connecting pin 5 inserted into the hole 2B. Further, a through hole 9 is formed in a predetermined boss portion 3 of the module link 4 to check whether or not a pin member such as the holding pin member 5A and the main body pin member 5B is inserted into the pin insertion hole 2. Have been.

The module link 4 adjacent in the longitudinal direction of the belt has a cross section D in which all the bosses 3A and 3B are combined in a finger-like manner, and the pin insertion holes 2A and 2B have a holding pin member 5A and a main body pin member 5B. When the conveyor belt 1 is formed by inserting the connection pins 5 having a shape, in FIG. 1, all the lower boss portions 3B of all the module links 4 arranged in the upper row have circular pin insertion holes 2B. Since all the upper bosses 3A of all the module links 4 arranged in the lower row have the D-shaped pin insertion holes 2A, the module links 4 arranged in the upper row The module links 4 arranged in the lower row have a hinge structure, and both are freely bent.

As described above, the module links 4 in the row adjacent to the belt in the longitudinal direction have a hinge structure, and the module links 4 disposed outside the belt are provided with the holding pin members 5A having the protrusions 6 for preventing the pin members from coming off. And the module link 4 arranged inside the belt
Are connected by a main body pin member 5B. In this case, as shown in FIG. 1, a plurality of abutting portions T of the module links 4 and 4 which are arranged in rows in the width direction of the belt.
And the abutting portions T 'of the adjacent module links 4 and 4 are displaced from each other, and further, the abutting portions T and T' are connected to the module links of the adjacent rows in the belt longitudinal direction. Butt portion P of pin member end faces such as holding pin member 5A or main body pin member 5B for connecting 4 and 4
The conveyor belt 1 is formed in such a manner that the position is shifted beyond at least one boss portion 3. Here, it is preferable that the end faces of the pin members abut each other at the center of the boss 3 at least two places away from the abutting portions T and T ′, and the abutting portion P is engaged with the teeth of the driving sprocket. It is preferable that the position be out of the range. And
Since the conveyor belt 1 is formed endlessly by connecting the module links 4 connected in a hinge structure in the longitudinal direction of the belt, the conveyor belt 1 travels while bending along the outer periphery of the sprocket.

The conveyor belt 1 configured as described above has a module link 4 disposed outside the belt.
Has a protrusion 6 for preventing the pin member from coming out, and is connected to one end by a holding pin member 5A provided with a flange-shaped stopper piece 7 so that the pin is not pushed too much. The holding pin member 5A is inserted through the pin insertion hole 2 of the module link 4 outside the belt, so that the end of the module link can be prevented from floating when engaging with the teeth of the sprocket, and the flange-shaped stopper piece 7 and the recess 8 can be prevented. By inserting a flat-headed flat-blade screwdriver between them, it can be easily pulled out, so that maintenance work can be easily performed. In addition, the conveyor belt 1
A plurality of module links 4 are arranged in the width direction and the longitudinal direction of the belt, and module links 4 adjacent in the longitudinal direction of the belt are connected to connecting pins 5 composed of a plurality of pin members.
The module link 4
, The combination of the module links 4 having different lengths, and the increase and decrease of the pin members 5A and 5B can be easily performed. As a result, the belt width and the belt length can be easily changed.

A plurality of conveyor belts 1 are arranged side by side in the width direction of the belt to form a row of module links 4,
The abutment portion T of the four comrades and the abutment portions T 'of the module links 4 and 4 of the adjacent rows are displaced from each other,
Further, the positions of the contact portions T and T 'and the butting portions P of the pin member end faces such as the holding pin member 5A or the main body pin member 5B connecting the module links 4 and 4 in the rows adjacent in the belt longitudinal direction. Is formed so as to be shifted beyond at least one boss portion 3, so that the connecting pin 5 passes continuously at the contact portions T and T 'of the module link 4, and the contact portion T , T ′, it is possible to prevent the module link 4 from rising when engaged with the teeth of the sprocket. Further, when the connecting pin 5 has an irregular cross section (substantially D-shaped cross section), the connecting pin 5 does not rotate with respect to the module link 4, so that all the conventional module links are inserted into the circular pin insertion holes. The abrasion resistance and elongation performance are improved as compared with a belt conveyor that is connected by a circular connecting pin and is configured to rotate.

[0018]

As described above, according to the present invention, the conveyor belt has a plurality of module links having a plurality of bosses each having a pin insertion hole, and a plurality of module links are arranged in the width direction of the belt. A plurality of module links in adjacent rows in the longitudinal direction of the belt, the module links in the adjacently arranged rows are formed by connecting the boss portions in a finger-like shape with connecting pins, and two adjacent rows in the longitudinal direction of the belt. Since the connecting pins for connecting the module links are composed of at least two pin members, the number of module links arranged in the width direction of the belt, the number of rows of module links,
By increasing or decreasing the number of pin members constituting the connecting pins, the belt can be manufactured by arbitrarily changing the width and length of the belt.

Since the module link provided outside the belt is connected by a holding pin member having a protrusion for preventing the module member from coming off, the module link is continuously connected to the boss portion of the module link outside the belt. The connecting pin is hung and does not move freely in the vertical direction, so that the outer end of the module link at the time of engagement with the teeth of the sprocket can be prevented from rising. As a result, the conveyor belt is provided near the drive side sprocket. It is possible to prevent contact with a dead plate for transferring a conveyed article, thereby preventing cutting of a conveyor belt, breakage of the dead plate, and the like.

The connecting pins for connecting the module links of two rows adjacent to each other in the longitudinal direction of the belt include at least two pin members, and the end faces of the pin members are connected to the module links arranged in the adjacent rows. Since the abutment portion of the competitor and the at least one boss portion abut against each other, the connecting pin continuously passes through the boss portion of the module link at the abutment portion of the module link, so that it cannot move freely in the vertical direction. The lifting of the module link at the time of engagement with the teeth of the sprocket can also be prevented at the contact portion.

Further, a flange-shaped stopper piece for preventing pin insertion is provided at one end of the holding pin member in each of the conveyor belts, so that when the pin member is inserted from outside the belt, it is pushed in. When the number of module links and pin members is increased or decreased, if a flathead screwdriver or the like is inserted between the flange-shaped stopper piece and the outer end wall of the module link, the holding pin member is easily removed. As a result, maintenance work can be easily performed.

Further, since the module link provided outside the belt is connected by a holding pin member having a protrusion for preventing the belt from slipping out, especially in the case of a belt conveyor aiming for stable conveyance of the conveyed articles, the belt pitch is increased. Although a relatively small one (the distance between the bosses in the longitudinal direction of the belt) of 20 mm or less is often used, the belt pitch is small when a stopper member is provided on the outer end wall of the module link outside the conventional conveyor belt. As the stopper member becomes smaller, the assemblability and maintenance workability become worse. On the other hand, even if the belt pitch becomes smaller, the holding pin member can be made relatively long, so that it can be easily held by hand and workability is improved. .

[Brief description of the drawings]

FIG. 1 is a partially sectional plan view showing a connected state of a conveyor belt according to an embodiment of the present invention.

FIG. 2 is an enlarged partial cross-sectional plan view of the conveyor belt.

FIG. 3 is a partial cross-sectional side view of FIG. 2 viewed from the right side.

FIG. 4 is a perspective view of a holding pin member.

FIG. 5 is a partially sectional plan view showing a connected state of a conventional conveyor belt.

FIG. 6 is a perspective view of the outer side of the conveyor belt.

FIG. 7 is a perspective view showing a position of a long hole outside the conveyor belt.

FIG. 8 is an explanatory diagram of an engaged state of the conveyor belt with a sprocket.

[Explanation of symbols]

 1 Conveyor belt 2, 2A, 2B Pin insertion hole 2A Substantially D-shaped pin insertion hole 2B Circular pin insertion hole 3, 3A, 3B Boss 3A Boss above module link (Fig. 2) 3B Below module link Boss on the side (FIG. 2) 4, 4A, 4B Module link 4 'Outer end wall 5 Connecting pin 5A Holding pin member 5B Body pin member 6 Projection 7 Flange stopper piece 8 Depression 9 Through hole T, T' Module link Competitor abutment part P Pin member end face butting part

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Keishi Ishii 4-17-17, Tsurumi-ku, Tsurumi-ku, Osaka-shi, Osaka F-term in Tsubakimoto Chain Co., Ltd.

Claims (3)

[Claims] 1. A plurality of module links having a plurality of bosses each having a pin insertion hole, and a plurality of module link rows arranged in the width direction of the belt are arranged adjacent to each other in the longitudinal direction of the belt. In the conveyor belt formed by connecting the module links of the set row with the boss portions in a finger-assembly shape by connecting pins, the connecting pins connecting the module links of the two rows adjacent in the belt longitudinal direction are at least two. The end faces of the pin members abut against the contact portions of the module links arranged in the adjacent row beyond at least one boss portion, and are provided outside the belt. Conveyor belts wherein the links are connected by a holding pin member having a projection for preventing slipping out of the pin members. 2. The conveyor belt according to claim 1, wherein the connecting pin includes two holding pin members and a main body pin member located between the two holding pin members. 3. The conveyor belt according to claim 1, wherein a flange-shaped stopper piece for preventing pin insertion is provided at one end of the holding pin member.