JPS59143805A - Belt laying mechanism of free flow conveyer - Google Patents

Abstract

PURPOSE:To facilitate detaching and replacing operation for an endless belt by providing a plurality of pulleys round which the endless belt is wrapped, one pulley thereof being a tension pulley elastically urged in one direction in a system for transporting a pallet with s pair of endless belts. CONSTITUTION:Three driven pulleys 16, 18, 20 are rotatably disposed at three apexes of a right-angled triangle on the inner sides of vertical wall portions 12, 14 opposed to each other at a fixed space therebetween. A comparative large-diameter driving pulley 22 is coupled to a driving pulley 22 mounted on the inner surface of an opposite other vertical wall portion through a common rotary shaft 28, and is driven by a driving motor 30. Groove portions 14 are formed on the lower part of the inner sides of the respective vertical wall portions 12, 14, and a slider 36 on which a tension pulley 42 is rotatably supported by a shaft 44 is fitted in the groove portions. Endless belts 24, 26 are wrapped round the above pulley group, and the slider 36 is pulled by a tension spring 40 to apply tension to the endless belts 24, 26.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a belt hooking mechanism for a free flow conveyor that makes it extremely easy to attach and detach an endless belt.

A free flow conveyor in which endless belts are wound around pulleys around a pair of opposing vertical walls so that the pallets can be freely conveyed by placing a pallet on the horizontal running surface of the pair of endless belts, Suitable for use in assembly lines for electronic equipment and other precision machinery. In this free flow conveyor, the endless belt is under severe operating conditions as it is often driven and driven, so it is necessary to periodically replace and repair the belt before the belt life ends. However, in the conventional belt hanging mechanism, the work of attaching and detaching the endless belt is extremely complicated and takes a long time.

The reason for this will be explained with reference to FIG. In the conventional free flow conveyor 10, a pair of vertical walls 12 and 14, which function as horizontal running paths for the top coverlet, are arranged parallel to each other with a predetermined distance apart, and are virtually arranged on each inner side of the vertical walls. Driven pulleys 16, 18 at each corner position of the rectangle
．． 20 and a drive pulley 22 are rotatably arranged, respectively, and endless belts 24 and 26 are wound around these pulleys. The driving boots IJ22, 22 facing each other with a predetermined distance apart are connected by a common rotating shaft 28 as shown in the figure, and by connecting this rotating shaft 28 to an independent drive motor 30, the surface drive pulley 2
2 and 22 are simultaneously rotated synchronously, and the endless belt 24.
The pallet 32 placed on the horizontal running surface of 26 is transported in a predetermined direction.

As described above, in the conventional free flow conveyor belt hooking mechanism, it is necessary to rotate two opposing drive pulleys 22, 22 by one drive motor 3o.
Naturally, the plane drive pulleys are commonly connected by the rotating shaft 28, but the endless belt 2'4
．． 26 is externally hooked on four pulley groups as shown in the figure, so the presence of the rotating shaft 28 becomes an obstacle when replacing the belt.For this reason, when replacing the belt, it is necessary to rotate it each time. Shaft 28 and drive pulley 22,2
2 had to be removed, which required complicated labor and time. In particular, in this type of free flow conveyor, the belt hook has a large number of mechanisms arranged in series at predetermined intervals, and it is common to replace and repair all endless belts at the same time. The difficulty was compounded even more.

The present invention solves the above-mentioned drawbacks inherent in the belt hanging mechanism of a free flow conveyor according to the prior art, and provides an improved belt hanging mechanism that allows attachment and detachment of an endless belt to be extremely easily and quickly replaced. The purpose is to provide.

In order to achieve this object, the belt hooking mechanism of the free flow conveyor according to the present invention has a pair of vertical walls that are arranged parallel to each other with a predetermined distance apart, and each inner side of the opposing vertical walls is At least two driven pulleys and one drive pulley are rotatably arranged, and a common rotation shaft connected to an independent drive source is connected to each of the opposing drive pulleys,
In a free flow conveyor that carries a pallet by placing the pallet on a pair of endless belts connected by pulleys, a tension pulley elastically biased in one direction is rotatably disposed on each inner surface of the vertical wall. The present invention is characterized in that an endless belt is wound around the tension pulley and the at least two driven pulleys, and the outer peripheral surface of the endless belt is forcibly brought into contact with the drive pulley.

Next, the belt hooking mechanism of the free flow conveyor according to the present invention will be described in detail below with reference to the accompanying drawings, citing preferred embodiments. Note that the same members as those described in connection with FIG. 1 will be designated by the same reference numerals as those already used. Furthermore, the free flow conveyors shown in Figures 1 and 2 both have three driven pulleys, but a simpler configuration, as shown in Figure 3, has two driven pulleys per channel on one side. Providing two driven pulleys 16, 18 and one driving pulley 22 is sufficient to perform the function.

Therefore, in a free flow conveyor in which the present invention is implemented, 1
It is sufficient that each channel has at least two driven pulleys and one drive boob +j.

In FIG. 2, a vertical wall 12. is made of a drawn profile of aluminum, for example. '14 are arranged facing each other with a predetermined distance apart, and three driven pulleys 16 are provided on the inner surface of each vertical wall.
, 18, and 20 are rotatably arranged at each vertex of a hypothetically arranged right triangle. Further, as shown in the figure, drive booles 1 and 122 having a slightly larger diameter than the series of driven pulleys are rotatably arranged in relation to each other. It is connected to the provided drive pulley 22 via a common rotation shaft 28, and the rotation shaft 28 is connected to an independent drive motor 30.

Furthermore, a groove 34 is horizontally provided below the inner surface of the vertical wall, and a slider 36 is fitted into this groove so as to be horizontally slidable. As shown in the figure, the slider 36 is elastically biased in the direction of arrow A by being engaged with the other end of a tension spring 40 whose one end is engaged with the upright pin 38. 42 is rotatably supported by the shaft 4 via a pin 44. That is, the tension pulley 42 can slide horizontally against the vertical wall, but as a result of the tension spring 40 acting on the slider 36, the tension pulley 42 itself is also elastically biased in the six directions of the arrows. This means that

Furthermore, the endless belt 24 is connected to the three driven pulleys 16.1.
8.20 and the tension pulley 42, and the outer peripheral surface of the endless belt 24 is wrapped around the drive pulley 22.
A belt is attached so that it comes into contact with the At this time, since the tension pulley 42 acts to apply tension to the endless belt 24 against the elasticity of the tension spring 40, the endless belt 24 is forcibly brought into contact with the drive pulley 22. become. Therefore, if the drive pulley 22 is rotated, the endless belt 24 will be driven and run smoothly. An endless belt 26 is also stretched on the other vertical wall portion having a similar configuration.

□Since the mechanism of the belt hook according to the present invention is constructed as described above, when repairing or replacing the endless belts 24, 226, as shown in FIG. The endless belt can be easily removed from all other pulley groups by simply sliding the slider 36 in the same direction and removing the endless belt from the tension pulley 42. In other words, the endless belt is driven by the drive boot I.
J22, the rotating shaft 28 which only receives power transmission by contacting with the outer peripheral surface of the belt, and which commonly connects the drive pulley 22 and the surface drive pulley to the inner peripheral region of the endless belt, is Since it does not exist, the rotating shaft 28 does not become an obstacle when replacing the belt. Therefore, there is no need to remove the rotating shaft every time the endless belt is repaired or replaced, and the replacement work can be accomplished easily and quickly. Moreover, as mentioned above, in the brief flow conveyor, the belt hook has a large number of mechanisms arranged in series and requires regular replacement of all the endless belts. When adopted, the efficiency of belt replacement is dramatically improved compared to the conventional method, and has extremely useful effects.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a belt hooking mechanism of a free flow conveyor according to the prior art, FIG. 2 is a perspective view of a belt hooking mechanism of a free flow conveyor according to the present invention, and FIG. 3 is a more simplified version of the mechanism of the present invention. FIG. 4 is an explanatory view schematically showing a state in which the endless bell 1- is removed from the mechanism of the present invention. 12.14... Vertical wall portion 16.18.20... Driven pulley 22... Drive pulley 24, 26... Endless belt 32... Pallet 1-42... Tension pulley patent applicant Sanshin Shokai Co., Ltd. FIG, 3 1 FIG, 4 0

Claims (1)

[Claims] a pair of vertical wall portions are arranged opposite to each other in parallel with a predetermined distance apart; each inner surface of the opposing vertical wall portions; at least two driven pulleys and one driving pulley are rotatably disposed; In a free-flow conveyor in which a common rotating shaft connected to an independent drive source is connected to each of the opposing drive belts, a pallet is placed on a pair of endless belts connected by pulleys, and the pallet is conveyed. , a tension pulley elastically biased in one direction is rotatably disposed on each inner surface of the vertical wall, an endless belt is wound around the tension pulley and the at least two driven pulleys, and the endless belt is wound around the tension pulley and the at least two driven pulleys. A belt hooking mechanism for a free flow conveyor, characterized in that the outer peripheral surface of the belt is forcibly brought into contact with the drive pulley.