JPH0733227A - Horizontal carriage conveyor - Google Patents

Abstract

PURPOSE:To provide a horizontal carriage conveyor which can keep a carriage pallet always horizontal no matter how the carriage track may be and does not need large installation space. CONSTITUTION:A pair of endless bodies 11 and 12 driven at the same speed are put around plural pairs of rollers 21 and 22 arranged in a pair at the turning points of carriage tracks so as to go round without slippage, and carriage pallet 30 is supported by these endless bodies 11 and 12 in a pair. The carriage pallet 30 is equipped with a pair of axially rotatable rods 31 and 32 in parallel, which extend each from one of the endless bodies 11 and 12 in a pair to the other and are supported each rotatably by the endless bodies 11 and 12 in a pair, and connectors 33, which mechanically connect these axially rotatable rods 31 and 33 in a pair. Furthermore, the rollers are arranged, being separated horizontally by the same distance A as the interval A between a pair of axially rotatable rods 31 and 32 so that a pair of axially rotatable rods 31 and 32 may be positioned always within the same plane.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor, and more particularly to a horizontal conveyor that can always convey an object to be conveyed in a horizontal state regardless of its conveyance path.

[0002]

2. Description of the Related Art For example, a conveyor used in a surface treatment line for coating or the like is desired to be supplied to a coating line, a surface treatment line, a drying line or the like without disturbing the posture of the object to be conveyed. . Each of these lines is
In order to reduce the installation space, they tend to be stacked in the vertical direction, and in this case, it becomes difficult to carry the objects to be conveyed without losing their posture.

[0003] Conventionally, as a conveyor that does not lose the posture of the object to be transported regardless of the transportation path, there is known a device that rotatably hangs a basket from the transportation conveyor. Since the direction of the basket is determined by gravity, the direction of the basket is kept constant regardless of the transport trajectory. However, in this conventional apparatus, the position of the basket is not fixed because the basket swings during transportation. In addition, there is a problem that a large installation space is required due to the structure of hanging the basket from the conveyor.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a horizontal conveyor that can always hold the conveyor pallet itself horizontally regardless of the conveyor path and does not require much installation space.

[0005]

SUMMARY OF THE INVENTION The horizontal conveyor according to the present invention uses a pair of endless bodies driven at the same speed, and the pair of endless bodies is arranged in pairs at the direction change point of the conveying track. While wrapping around a plurality of pairs of rotating bodies without slipping, a pair of endless bodies supporting a transport pallet, the transport pallets extend from one of the pair of endless bodies toward the other endless body, A pair of parallel rotatable shafts that are rotatably supported by the pair of endless bodies, and a connecting body that mechanically connects the pair of rotatable shafts. The body is separated in the horizontal direction by the same inter-axial distance A as the distance A between the pair of axially rotatable rods so that the pair of axially rotatable rods of one transport pallet are always located in the same plane. Specially placed It is set to. According to this configuration,
The transport pallet is always kept horizontal regardless of the transport track.

At least one pair of the plurality of pairs of rotating bodies is supported on a movable machine frame, and a moving means for moving the movable machine frame in a direction in which the tension of the pair of endless bodies increases is provided. It is preferred that the slack be removed.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to illustrated embodiments. 1 and 2 show the basic principle of the horizontal conveyor according to the present invention. The pair of endless chains 11 and 12 are respectively wound around a pair of sprockets 21 and 22, and the transfer pallet 30 is attached to the endless chains 11 and 12.
Is supported. One of the features of the present invention is the support structure of the transfer pallet 30 and the arrangement structure of the sprockets 21 and 22.

The transfer pallet 30 has a pair of axially rotatable rods 31 and 32 which are parallel to each other, and a connecting rod 33 which mechanically connects the axially rotatable rods 31 and 32. The shaft rotatable rod 31 extends from the endless chain 11 to the endless chain 12 side, and the shaft rotatable rod 32 extends from the endless chain 12 to the endless chain 11 side, respectively.
Moreover, it is rotatably supported around its axis. That is, the endless chains 11 and 12 are fixed with the tubular brackets 34 toward the other chains 12 and 11, respectively, and the axially rotatable rods 31 and 32 rotate in the tubular brackets 34, respectively. It is freely inserted. As shown in FIG. 3, the tubular bracket 34 is fixed to the pivotally connecting portion between the chain elements of the endless chains 11 and 12 via a fixing screw 39. Axial rotatable rod 31
The interval between and 32 is set to the distance A.

Rollers 35 are rotatably supported on the free ends of the shaft-rotatable rods 31 and 32, respectively. The rollers 35 are guides provided along the conveying paths of the endless chains 11 and 12. Roll on the rail 36.
As shown in FIG. 4, chain guides 37 of the endless chains 11 and 12 are appropriately provided on the transport tracks of the endless chains 11 and 12. On the transfer pallet 30, a net 38 for placing the transferred object is placed.

A pair of sprockets 2 respectively provided at the direction changing points of the conveying tracks of the endless chains 11 and 12.
1, 22 are arranged such that their shafts 21c, 22c are horizontally separated by a distance equal to the distance A between the shaft rotatable rods 31 and 32. That is, each of the plurality of pairs of sprockets 21, 22 has its shaft 21c, 22
c is an axially rotatable rod 31 of one transport pallet 30
And 32 are always located in the same plane and are always separated in the horizontal direction.

According to the support structure of the transfer pallet 30 and the arrangement structure of the sprockets 21 and 22 described above, when the endless chains 11 and 12 are transferred at the same speed, when the transfer paths of the sprockets 21 and 22 are changed, and Before and after that, the transport pallet 30 can always be held horizontally. That is, when the endless chains 11 and 12 move in the horizontal direction, the transfer pallet 30 holds the horizontal position, and the transfer pallet 30 is not limited to the sprocket 2.
When rotating around 1, 22 its shaft rotatable rod 3
Since 1 and 32 rotate in the tubular bracket 34, they are held horizontally. This relationship is a sprocket pair 2
Since it does not depend on the number of installations of 1 and 22, the transport pallet 30 can always be held horizontally even when the transport trajectory is set in the vertical direction or the diagonal direction.

FIG. 5 shows an example of setting the transport trajectory.
In FIG. 5, the sprockets 21 (some of which are also in the sprockets 22) are denoted by the symbols A to N in order in the transport direction. The transport track of this embodiment is a combination of horizontal and vertical directions. As described above, according to the horizontal conveyor of the present invention, no matter how many sprocket pairs 21 and 22 are installed, the conveyor pallet 30 can be moved while always being held horizontally.

For example, in the case of a coating line, multiple horizontal movement sections can be set alternately as a coating section and a drying section to perform multiple coating processing. Specifically, assuming that the sprocket 21A is an inlet sprocket, if the object to be coated is supplied onto the transfer pallet 30 that has reached the sprocket 21A portion, the object to be coated on the transfer pallet 30 will pass through the sprockets 21B to 21N. A series of multiple coating processes can be completed before reaching the sprocket 21A again.

6 to 8 show a pair of endless chains 1
The drive mechanisms 1 and 12 are shown. The machine frame 43 fixed on the installation foundation 40 has a pair of sprockets 2 above and below the machine frame 43.
1 and 22 are rotatably supported respectively. Driven shafts 41 and 42 which are parallel to each other are fixed to shafts 21c and 22c of the upper sprockets 21 and 22, respectively.
b and 42b are fixed.

On the other hand, on the machine frame 43, the driven shafts 41, 42 are mounted.
A drive shaft 45 in a direction orthogonal to is rotatably supported, and bevel gears 46b and 47b meshing with the bevel gears 41b and 42b are fixed to the drive shaft 45. The drive shaft 45 is rotationally driven via a drive motor 48 and a speed reducer 49. The drive mechanism drives the pair of sprockets 21 and 22 to drive the endless chains 11 and 12 at the same speed and in the same direction.

9 and 10 show endless chains 11 and 1
2 shows a tension mechanism of 2. A fixed machine frame 53 is provided on the installation foundation 40, and horizontal guide rails 54 are provided above and below the fixed machine frame 53. A movable machine frame 56 having a roller 55 that engages with the guide rail 54 is disposed in the stationary machine frame 53. The movable machine frame 56 has a pair of sprockets 21 and 22 arranged above and below the movable machine frame 56. Are rotatably supported. A hydraulic cylinder device 58 is provided between the movable machine frame 56 and the fixed machine frame 53, and the hydraulic machine cylinder 58 allows the endless chain 11 to move to the movable machine frame 56.
And the moving force in the direction of increasing the tension of 12 is given. This tension mechanism is used for multiple pairs of sprockets 2
It is provided on at least one of the support portions 1 and 22.
Therefore, the looseness of the endless chains 11 and 12 can be removed by moving the movable machine frame 56 in the tension increasing direction by the hydraulic cylinder device 58.

[0017]

As described above, according to the horizontal conveyor of the present invention, the conveyor pallet can be always held horizontally and conveyed regardless of how the conveyor path is set. Since the transfer pallet is composed of a pair of shaft-rotatable rods and a connecting body that connects the rods, the transfer pallet can be made small and thin. Therefore, it is possible to obtain a horizontal transfer conveyor that is small in size and operates reliably. .

[Brief description of drawings]

FIG. 1 is a perspective view of a pair of rotating body parts showing an embodiment of a horizontal conveyor according to the present invention.

FIG. 2 is a perspective view of two pairs of rotary body parts.

FIG. 3 is a plan view of a transfer pallet portion of a horizontal transfer conveyor according to the present invention.

FIG. 4 is a left side view of FIG.

FIG. 5 is an overall configuration diagram showing an example in which the horizontal conveyor of the present invention is used in a coating line.

FIG. 6 is a plan view showing an example of a drive system of a horizontal conveyor according to the present invention.

FIG. 7 is a front view of the same.

FIG. 8 is a perspective view of the main part.

FIG. 9 is a front view showing an endless body tensioning mechanism of the horizontal conveyor according to the present invention.

10 is a cross-sectional view taken along line XX of FIG.

[Explanation of symbols]

 11 12 Endless Chain (Endless Body) 21 22 Sprocket (Rotating Body) 30 Transport Pallet 31 32 Shaft Rotating Rod 33 Connection Rod (Connecting Body) 41 42 Driven Shaft 45 Drive Shaft 48 Drive Motor 49 Reducer 53 Fixed Machine Frame 56 Yes Motivation frame 58 Hydraulic cylinder device

Claims (2)

[Claims] 1. A pair of endless bodies; a plurality of pairs of endless bodies, which are paired around the pair of endless bodies without slipping, and which are arranged at a direction change point of a transport track; Driving means for driving at a speed; a pair of parallel shafts extending from one of the pair of endless bodies toward the other endless body and rotatably supported by the pair of endless bodies and separated by a distance A A conveyor pallet having a flexible rod and a connecting body for mechanically connecting the pair of shaft rotatable rods; and the pair of rotating bodies is such that the pair of rotatable shafts of one conveyor pallet are always the same. A horizontal conveyor comprising a pair of axially rotatable rods arranged in a horizontal plane and spaced apart by the same inter-axial distance A as the distance A between the pair of axially rotatable rods. 2. The moving mechanism according to claim 1, wherein at least one pair of the plurality of pairs of rotating bodies is supported on a movable machine frame, and the movable machine frame is moved in a direction in which the tension of the pair of endless bodies increases. A horizontal conveyor provided with means.