JPH0556821U - Drive structure of meandering correction roller - Google Patents

Abstract

(57) [Abstract] [Purpose] A simple meandering correction roller drive structure that does not wear each part even if the meandering correction of the conveyor belt is frequently performed and has excellent durability, and that is easy to assemble or repair. To provide. A motor 60 that operates in response to a signal from the meandering detection device 30, a first connector 70 that rotates by the operation of the motor 60, and one of the first connector 70 and the first connector 70 at a position eccentric to the center of rotation of the first connector 70. And a second connector 80 pivotally attached to the rotary shaft 41 of the meandering correction roller 40 at the other end.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a drive structure for a meandering correction roller that corrects meandering of a conveyor belt, and more particularly, at least one end of its rotation axis slides in the traveling direction of the conveyor belt by a signal from a meandering detection device that detects meandering of the conveyor belt. The present invention relates to the improvement of the drive structure of the moved meandering correction roller.

[0002]

[Prior Art]

 Conventionally, various types of conveyors having a structure for correcting the meandering of the conveyor belt have been devised.In some of these, meandering correcting rollers are used to adjust the tension applied to the conveyor belt. There are things that fix the meander.

At least one end of the meandering correction roller of the conveyer is slidably supported on the conveyer body, and the meandering correction roller of the conveyer is slidable in the traveling direction of the conveyer belt. The hanging tension is adjusted. That is, as shown in FIG. 4, when the conveyor belt meanders on the arrow a side, for example, the a side end of the rotation axis of the meandering correction roller slides in the arrow b direction to hang the conveyor belt on the a side. If the conveyor belt meanders to the arrow c side, the end of the meandering correction roller on the side of the rotation shaft a is slid in the direction of arrow d to reduce the tension applied to the conveyor belt on the side a. Then, the conveyor belt is returned to the normal track.

Here, in order to enable the above-mentioned operation to be performed automatically without manual operation, a meandering correction roller drive structure as shown in FIG. 6 has been conventionally adopted. This drive structure will be described below. ..

First, both ends of the rotation shaft of the meandering correction roller are slidably supported by the conveyor main body through support members. A feed screw is screwed into each of the support members, and the support screw is slid by driving the feed screw. Here, an operation handle is fixed to the end of one of the feed screws, and the tension on the conveyor belt is adjusted by manually sliding the support member on the side of the operation handle. The end of the feed screw is connected to the motor via a gear, and the tension of the conveyor belt is adjusted by the operation of the motor. Then, this motor is operated by a signal from a meandering detection device for detecting the meandering of the conveyor belt provided on the conveyor body. That is, when the conveyor belt meanders, the motor rotates in the normal or reverse direction so that the support member slides in the direction that corrects the meandering of the conveyor belt.

[0006]

[Problems to be solved by the device]

 However, in the case of the conventional drive structure, although this was sufficient for its function, it needed to be further improved.

That is, in the conventional drive structure, when the meandering correction of the conveyor belt is frequently performed, the feed screw is driven to slide the support member, so that the feed screw or the screw portion of the support member is worn. It will end up. If the degree of this wear increases, the normal function of correcting the meandering of the conveyor belt will not be fulfilled, and there remains a problem that parts such as the feed screw and the supporting member must be replaced. Furthermore, since a supporting member that slides by driving the feed screw is required, and the operation of the motor is transmitted to the feed screw through the gear, the structure becomes complicated, and the assembly or repair work becomes difficult. There was also the problem of being complicated.

The present invention has been made in order to solve the above problems, and an object of the present invention is to prevent the components from being worn even if the meandering correction of the conveyor belt is frequently performed, and the durability is improved. An object of the present invention is to provide a simplified meandering correction roller driving structure which is excellent and easy to assemble or repair.

[0009]

[Means for Solving the Problems]

 The means adopted by the present invention for solving the above problems will be described with reference to the reference numerals used in the drawings. "The conveyor body 10, the conveyor belt 20, and the meandering for detecting the meandering of the conveyor belt 20 will be described. The meandering correction roller 40 in a conveyor 100 having a detection device 30 and a meandering correction roller 40 having at least one end of a rotary shaft 41 of the conveyor body 10 slidably supported in the traveling direction of the conveyor belt 20. In the driving structure 50, the motor 60 that operates by the signal from the meandering detection device 30, the first connector 70 that rotates by the operation of the motor 60, and the rotation center of the first connector 70 And a second connecting member 80 pivotally attached at one end thereof to the eccentric position and at the other end pivotally attached to the rotary shaft 41 of the meandering correction roller 40. A characteristic meandering correction roller 40 drive device 50 ".

That is, the drive structure 50 of the meandering correction roller 40 of the present invention does not slide the support member that supports the rotation shaft 41 of the meandering correction roller 40 by the feeding mechanism as in the conventional case, but rather the first connecting tool. The structure is such that the second connecting member 80 directly slides the rotation shaft 41 of the meandering correction roller 40 by the rotation of 70.

[0011]

[Function of the device]

 Next, the operation of the drive structure 50 of the meandering correction roller 40 according to the present invention configured as described above will be described below.

First, as shown in FIG. 1, the conveyor main body 10 is provided with a meandering detection device 30 for detecting the meandering of the conveyor belt 20, and the motor 60 is operated by a signal from the meandering detection device 30. Then, the operation of the motor 60 causes the first connecting member 70 to rotate.

Further, at least one end of the rotary shaft 41 of the meandering correction roller 40 is slidably supported in the conveyor main body 10 in the traveling direction of the conveyor belt 20, and one end of the second connecting member 80. Is pivotally attached to the rotary shaft 41. The other end of the second connecting member 80 is pivotally attached to a position eccentric from the center of rotation of the first connecting member 70.

Therefore, when the first connector 70 is rotated, the rotation shaft 41 of the meandering correction roller 40 is pushed or pulled in the traveling direction of the conveyor belt 20 by the second connector 80 and slides. That is, the drive structure 50 serves as a so-called slider crank mechanism that converts the rotational movement shown in FIG. 5 into a linear movement.

[0015]

【Example】

 Next, an embodiment of the drive structure 50 for the meandering correction roller 40 according to the present invention will be described. The drive structure 50 is applied to a wide range of conveyors for carrying various articles, for example, cloth. The present invention is also applied to a conveyor 100 of a cloth heating and bonding machine that conveys the interlining and the surface fabric and heats and bonds them, and the conveyor 100 of the cloth heating and bonding machine will be described below as an example.

FIG. 1 shows a driving structure 50 of the meandering correction roller 40 according to the present invention.

The meandering correction roller 40 is free to move with respect to its rotation shaft 41, and the rotation shaft 41 is supported by the conveyor body 10. Here, one end of the rotating shaft 41 is slidably supported in the traveling direction of the conveyor belt 20, but is supported via a supporting member 42 by a bearing so as to smoothly slide. Then, the rotary shaft 41 projects to the outside of the support member 42, and the second connecting member 80 is pivotally attached to the end thereof. Since the meandering correction roller 40 is free to move with respect to the rotary shaft 41, the second connecting member 80 may be fixed to the rotary shaft 41. However, in the present embodiment, it is more smooth. The rotating shaft 41 and the second connecting member 80 are connected to each other via a bearing in order to function.

Further, the conveyor main body 10 is provided with a meandering detection device 30 and a motor 60 which is operated by a signal from the meandering detection device 30. A first connecting member 70 is fixed to the rotary shaft 61 of the motor 60, and the second connecting member 80 is attached to the first connecting member 70 at a position eccentric from the center of rotation of the first connecting member 70 via a pin 81 and a bearing. It is strongly connected.

With the structure as described above, a so-called slider crank mechanism for converting a rotary motion into a linear motion is configured, and the rotation shaft 41 of the meandering correction roller 40 is slid by the rotation of the first connecting member 70. .. In this embodiment, since the motor 60 has sufficient torque to slide the rotating shaft 41 of the meandering correction roller 40 against the tension applied to the conveyor belt 20, the rotation of the motor 60 is reduced. Although the first connecting member 70 is directly fixed to the shaft 61, when the motor 60 having a small torque is used, as shown in FIG. 3, the first connecting member 70 is interposed between the rotating shaft 61 of the motor 60 and the first connecting member 70. You should go through gear 51.

Next, FIG. 2 shows a specific structure of the meandering detection device 30 described above.

In this meandering detection device 30, ON / OFF of the switch 31 is sent as a signal. However, in the case of the conveyor 100 of the cloth heating and bonding machine, the conveyor belt 20 is also heated, so that it is heated by heat. The switch 31 does not come into direct contact with the conveyor belt 20 so that the switch 31 is not damaged. That is, it is the first lever 32 rotatably provided on the conveyor body 10 that directly contacts the conveyor belt 20, and the second lever 32 rotatably provided on the conveyor body 10 is attached to the first lever 32. 33 is rotatably and slidably connected, and the switch 31 is operated by the second lever 33. The meandering detection device 30 is always urged by a spring 34 so that the first lever 32 comes into contact with the conveyor belt 20, and also when the conveyor belt 20 is meandered or the conveyor belt 20 is replaced. A stopper 35 is provided so that the second lever 33 does not damage the switch 31. Further, since the conveyor belt 20 and the first lever 32 are always in contact with each other, a roller 36 is provided at a contact portion between the first lever 32 and the conveyor belt 20 so as to prevent abrasion of the conveyor belt 20 and the first lever 32. Has been.

The motor 60 is operated by such a signal from the meandering detection device 30. For example, a switch is used so that the rotation shaft 41 of the meandering correction roller 40 slides in a direction to correct the meandering of the conveyor belt 20. The rotation direction of the motor 60 is controlled so that the motor 60 rotates in the normal direction when 31 is turned on and the motor 60 is rotated in the reverse direction when the switch 31 is turned off. Further, when it is necessary to finely correct the meandering of the conveyor belt 20, the displacement amount of the switch 31 can be detected so that the displacement amount is used instead of ON / OFF for the signal. At the same time, the motor 60 may be operated. Since the drive structure 50 of the present invention is a slider crank mechanism, front dead center and rear dead center occur as shown in FIG. 5, but the motor 60 operates between the front dead center and the rear dead center. It is better to control it.

As described above, in the present embodiment, the drive structure 50 of the present invention is used at one end of the rotation shaft 41 of the meandering correction roller 40, and the other end is a conveyor 100 for manually adjusting the tension applied to the conveyor belt 20. However, even if the conveyor 100 adopts the drive structure 50 at both ends and slides both ends of the rotation shaft 41 of the meandering correction roller 40 when the conveyor belt 20 meanders, the conveyor 100 may be modified. Naturally good.

[0024]

[Effect of the device]

 As described above in detail, the drive structure of the meandering correction roller according to the present invention does not slide the support member that supports the rotation shaft of the meandering correction roller by driving the feed screw as in the prior art, but rather moves the feed screw. Also, the structure does not require a supporting member. Therefore, according to the drive structure of the meandering correction roller of the present invention, even if the meandering correction of the conveyor belt is frequently performed, the parts are not worn and the durability is excellent, and the assembly or repair work is simplified. It can be a drive structure for the meandering correction roller.

[Brief description of drawings]

FIG. 1 is a partial perspective view of a conveyor adopting an embodiment of a meandering correction roller drive structure according to the present invention.

FIG. 2 is a partial plan view showing an example of a meandering detection device.

FIG. 3 is a partial plan view showing another embodiment of the driving structure of the meandering correction roller according to the present invention.

FIG. 4 is an explanatory diagram for correcting meandering of a conveyor belt.

FIG. 5 is an explanatory view showing a slider crank mechanism.

FIG. 6 is a partial perspective view showing a conventional meandering correction roller driving device.

[Explanation of symbols]

 10 Conveyor main body 20 Conveyor belt 30 Meandering detection device 31 Switch 32 First lever 33 Second lever 34 Spring 35 Stopper 36 Roller 40 Meandering correction roller 41 Rotating shaft 42 Supporting member 50 Drive structure 51 Gear 60 Motor 61 Rotating shaft 70 First connection Tool 80 Second connector 81 pin

Claims (1)

[Scope of utility model registration request] 1. A conveyor main body, a conveyor belt, a meandering detection device for detecting the meandering of the conveyor belt, and at least one end of a rotation shaft of the conveyor main body is slidably supported in the traveling direction of the conveyor belt. In a drive structure of the meandering correction roller in a conveyor having a meandering correction roller, a motor operated by a signal from the meandering detection device,
A first connecting tool which is rotated by the operation of the motor, and one end of which is pivotally attached at a position eccentric from the center of rotation of the first connecting tool and the other end of which is attached to the rotary shaft of the meandering correction roller. A meandering correction roller driving device, comprising a pivotally attached second connecting member.