JPS62196211A - Conveyor - Google Patents

Abstract

PURPOSE:To shorten the assembling time of titled conveyor, by horizontally mounting belt conveying path forming members on a cantilever-like supporting members projected on the side of a frame, thereby performing a belt exchange in such a way of only loosing a tension pulley. CONSTITUTION:Conveying path forming members 12 are provided with supporting members 17, having mounting plates 18, 19 fixed on the both ends thereof, which are horizontally fixed on cantilever-like supporting members 15 of a frame 1. An idler pulley 3a and air cylinder 21 with tension pulleys 20 are provided on the attaching plate 18 and idler pulleys 3b, 3c are provided on the attaching plate 19. Between a pair of conveying path forming members 12, a pair of motive pulleys 2 are rotatably mounted. A conveying belt 4 is strechedly set between the idler pulleys 3a, 3b, 3c and the motive pulley 2 and the tension pulleys 20 are abutted to the belt 4 portion being placed between the motive pulleys 2 and the idler pulley 3c. Therefore, a pressing force to the belt of the tension pulleys 20 is adjusted by the air cylinder 21, thereby it is possible to easily remove the belt 4 from the side portion opposed to the frame by loosing the belt 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a workpiece conveyance device, and particularly to a conveyance means using a belt.

[Prior art]

As an example of this type of conveying device for belt 2,
There is a device as shown in FIG. 3 disclosed in Japanese Patent No.-21474. This conveyance device includes two pairs of a drive pulley 2 rotatably supported on one edge of the upper surface of a mount 1 and an idler pulley 3 rotatably supported on the other edge. Prepare,
A conveyor belt 4 is stretched between the pair of motive vehicle pulleys 2 and idler pulley IJ 3, respectively. A sprocket 5a is attached to the rotating shaft of the drive pulley 2, and both sprockets 5a, 5b are connected to the sprocket 5b, which is attached to the rotating shaft of the electric motor 60 provided on the pedestal 1 side.
Both drive pulleys 2 are rotated by receiving driving force through a chain 7 stretched between them. When the drive pulley 2 rotates, the belt 4 stretched between it and the idler pulley 3 moves in the rotational direction of the drive pulley 2, and the workpiece 8 placed on both belts 4, for example. is conveyed in a predetermined direction. Further, a guide 9 is provided between both belts 4, and the workpiece 8 moves along a guide groove 10 formed in the guide 9.
0 to position the workpiece 8.

In this conventional example, the conveyance path 11 consisting of the belt 4, drive pulley 2, idler pulley 3, sprocket 5a, etc. is provided at the center of the pedestal l, and is located at both widthwise edges of the conveyance path 11. In the section, there is a structural member 1 that supports the load.
a and 1b are arranged so that the workpiece 8 can be transported in a stable state.

[Problem that the invention seeks to solve]

By the way, in the conventional conveyance device configured as described above, since the conveyance path 11 is provided near the center of the upper surface of the pedestal 1, the structural members 1a, lb on the side edges of the pedestal l are
If the belts are not separated from each other, the belt 4 cannot be removed or installed, and if the belt is damaged, the line will have to be stopped for a long time for repair or replacement, increasing lost time and reducing productivity. Furthermore, since the structural members 1a and lb are disposed on both edges of the conveyance path 11, the distance between the side edge 1c of the pedestal 1 and the workpiece 8 cannot be increased beyond a certain level, so that automatic When used in combination with an assembly machine, etc., wasted space is created in the work area, resulting in a loss of assembly tact.

This invention was made in view of the problems of the prior art described above, and its first purpose is to provide a conveying device that can easily replace belts and minimize loss time. . A second object is to provide a conveying device that can be assembled in the shortest possible time without wasting space in the work area, with extremely little loss in assembly tact.

[Means for solving problems]

In order to solve the above problems and achieve the intended purpose, the present invention includes a driving pulley and an idler pulley, a conveyor belt is stretched between the two pulleys, and a workpiece is placed on the belt. In a conveyance device that is placed and conveyed, the drive pulley and idler boot are rotatably provided at one end and the other end, respectively, and the conveyance belt stretched between the drive pulley and the idler boot can be pressed. A conveyance path forming member including a tension wheel and a stroke adjustment means for the tension wheel is horizontally fixed on a support member of a frame having a support member with one end open and projecting laterally. It is.

[For production]

According to the above means, the supporting member protruding like a cantilever,
By simply horizontally mounting and fixing the transport path forming member, structural members are placed only on one side of the transport path forming member, and no structural member is required on the other side, so the side, top, and bottom surfaces of the transport path forming member on the same side can be placed on the same side. Both end faces (the end faces on the side where the pulley is disposed) are shaped to protrude into space, and are open except for the portion facing the pedestal. Therefore, when replacing the belt, the belt can be removed and attached very easily by adjusting the stroke adjustment means of the tension wheel to weaken the pressing force of the tension wheel and loosen the belt. In addition, since there is no structural member on the same side of the conveyance path forming member, when combined with an automatic assembly machine, the distance between the assembly side end of the automatic assembly machine and the conveyance path must be minimized. is possible,
Therefore, the assembly tact time is also minimized, and the assembly time can be shortened.

〔Example〕

Hereinafter, an example of implementation of the present invention will be described based on the drawings.

1 and 2 are for explaining the present invention in detail, and FIG. 1 is an exploded perspective view of a conveying device according to an embodiment;
FIG. 2 is a perspective view showing the overall configuration. Hereinafter, components that are the same as or can be considered to be the same as those of the conventional example will be described with the same reference numerals.

In FIG. 1.2, the conveyance device is mainly composed of a pedestal 1, a pair of conveyance path forming members 12, and a conveyance belt 4 provided on the conveyance path forming members 12. The pedestal 1 consists of a leg 3, an upper plate 14, and a cantilever-like support member 15 that protrudes laterally from the side surface of the upper plate 14 in parallel with the upper plate 14. Below the upper plate 14 is an electric motor 6. Further, a control device 16 for the electric motor 6 is provided at the lower part of the pedestal 1.

The conveyance path forming member 12 mainly consists of one support member 17 and mounting plates 18 and 19 fixed to both ends of this support member 17. An air cylinder 21 having a diameter of 20 is provided, and a mounting plate 19 is provided with idler pulleys 3b and 3c. The air cylinder 21 changes the stroke of the tension wheel 20 provided at the tip of the rod 21a by changing the stroke of the piston, and changes the pressing force of the tension wheel 20 against the belt 4, which will be described later, to adjust the tension of the belt 4. It functions as a stroke adjustment means for the tension wheel 20 that can be adjusted.

Further, in this embodiment, a pair of conveyance path forming members 12 are prepared, and a bearing 22 such as a self-aligning bearing is fitted into the mounting plate 18 on the air cylinder mounting side. A rotating shaft 23 on which a pair of motive wheel boos I72 are attached is inserted into the motive force pulley 22, and the motive wheel pulley 2 is rotatably supported between the opposing mounting plates 18. The end of the rotating shaft 23 on the pedestal 1 side protrudes from the bearing 22, and a sprocket 5a is pivotally attached to the protrusion 23a.
The subrocket 1-5a and the drive pulley 2 are designed to rotate integrally.

The pair of conveyance path forming members 12 are horizontally suspended and fixed on the support member 15 of the pedestal l, as shown in FIG. , and maintains a preset interval. This interval is set such that the planes of rotation of the motive vehicle pulley 2 and the idler boot IJ 3 a substantially coincide with each other.

The conveyor belt 4 includes idler pulleys 3a and 3b rotatably attached to mounting plates 18 and 19.

3C and the drive pulley 2, and the tension wheel 20 comes into contact with a portion of the belt 4 located between the drive pulley 2 and the idler pulley 3C.

Further, a sprocket 5b is attached to the rotating shaft of the electric motor 6, and a driving chain 7 is suspended between the sprocket 5a and the sprocket 5a, so that the motor pulley 2 can be rotationally driven by the electric motor 6 via the chain 7. It looks like this. Therefore, if the belt 4 is stretched as described above, the belt 4 will be fed at the same speed as the circumferential speed of the drive pulley 2, and for example, as shown in FIG. 8a is on this belt 4! 3! The workpiece 8 can be conveyed in the conveying direction of the belt 4.

According to the embodiment of the present invention configured as described above, the conveyance path forming member 12 is horizontally fixed on the support member 15 of the frame 1.
Simply attach the air cylinder 21 without removing it from the base 1.
By driving the tension wheel 20 to retreat from the belt 4 and loosening the tension on the belt 4, the belt 4 is removed from the side A side of the transport path forming member 12 on the side opposite to the mount and replaced with a new belt 4. I can do it. Further, since no structural members are arranged on the sides of the side portion A, the end of an automatic machine such as an automatic assembly machine can be directly exposed to the conveyance path forming member 12. , automatic machines and work 27
Since the distance between the two parts can be minimized, assembly tact loss can be eliminated.

〔Effect of the invention〕

As is clear from the above description, according to this invention in which the conveyance path forming member is suspended horizontally on a cantilever-like support member protruding from the side of the pedestal, the portion of the conveyance path forming member facing the pedestal is All the other five sides are open, so you can easily replace the belt by simply loosening the tension on the tensioner, and the end of the automatic machine can be installed facing the conveyance path forming member.
Assembly tact loss can be minimized. Furthermore, due to the ease of replacing the belt and the shortening of the assembly tact, the overall loss time is significantly shortened, and the line operating rate can be improved.

[Brief explanation of drawings]

1 and 2 are for explaining the present invention in detail. FIG. 1 is an exploded perspective view of a conveying device according to an embodiment, and FIG. 2 is a perspective view showing the overall structure of the conveying device. 3 shows a conventional conveying device/idler pulley, 4...belt, 6...electric motor (drive means), 8...workpiece,
12... Conveyance path forming member, 15... Supporting member, 2o
... Tension wheel, 21... Air cylinder (stroke adjustment means). 71' Representative Patent Attorney Takeshi Kenjibe (1 other person), ・1j゛1・]Pa, <゛〔 Fig. 2 Fig. 3

Claims (1)

[Claims] 1. A drive pulley driven by a driving means and at least one pair of idler pulleys are provided, a belt is stretched between the drive pulley and the idler pulley, and a workpiece is placed on the belt. In an apparatus for transporting a belt, a support member with one end open and a support member protruding from the side is provided, the drive pulley is placed on one end side, the idler pulley is placed on the other end side, and the belt is pressed against the belt. 1. A conveyance device comprising a conveyance path forming member provided with a tension wheel for adjusting tension and a stroke adjustment means for the tension wheel, the conveyance path forming member being horizontally fixed on the support member.