JPS6043263B2 - assembly line base machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an assembly line base machine.

Conventionally, pallets or products are conveyed to a fixed position on a movable base using a conveyor belt provided independently at each station, and the movable base is floated by a cylinder to separate the pallet or product from the conveyor belt.

Therefore, although this conventional assembly line base machine allows continuous operation of the belt, it requires a movable base, which requires strength and precision, has a complicated structure, and has the drawbacks of being extremely expensive. Ta. The purpose of the present invention is to
It eliminates the drawbacks of the conventional method, eliminates the need for a complicated and expensive movable base, simplifies other mechanisms, and is inexpensive. Moreover, it can accurately stop and position pallets or products at the assembly position and is independent from other assembly stations. Our goal is to provide an assembly line-based machine that enables automatic assembly.

That is, in order to achieve the above object, the present invention provides that each table independently provided at each station in an assembly line moves from one end to the other end, places a pallet or a product thereon, and transports the table. an endless belt conveyor; a rail-shaped guide means for guiding the pallet or product conveyed by the endless belt conveyor from one end to the other;
A drive source that drives the endless belt conveyor is formed to be able to move in and out of the conveyance path for the pallet or product, and engages the pallet or product placed on the endless belt conveyor to be conveyed. a stopper for stopping the product at the working position; a first drive means for moving the stopper into and out of the transport path of the transported object; and a positioning mark formed on the transported object stopped at the working position by the stopper. a positioning member that positions the pallet or product by fitting into the member; a detection means that detects engagement of the pallet or the product with the stopper; and a signal from the detection means that operates the positioning member. and a second driving means for fitting and positioning the positioning member to the member to be positioned of the pallet or product, so that each assembly station is independent, and the structure is further simplified, so that it can be simply mounted on an endless belt conveyor. to accurately stop pallets or products at the assembly position.
It is characterized by an assembly line-based machine that allows automatic positioning and assembly work.

The present invention will be specifically described below with reference to embodiments shown in the drawings.

FIG. 1 is a perspective view of an embodiment of an independent free cycle assembly line base machine according to the present invention, FIG. 2 is a partially sectional front view, and FIG. 3 is a partial side view.
That is, the independent free cycle assembly line base machine is formed by a table 13, which is stretched between a pulley 14a rotatably provided at one end and a pulley 14b rotatably provided at the other end. Two endless belts 2 for conveying products and the pulley 14a are connected to the belt 1.
5, a control device 3 for controlling the drive motor 1 and the cylinders 9, 16, and a space for manual labor and assembly in which workers can put their feet. A space 5 is formed in which a built-in unit (not shown) can be installed. This table 13 is provided at each independent assembly station,
It constitutes an independent free cycle assembly line base machine. Therefore, the belt 2 is moved in the direction of the arrow by the motor 1, and the pallet or (
(hereinafter referred to as the product) 6 is attached to the belt 2 due to the weight of the product 6.
Two bosses 11 and 12 of different heights, planted in the center of the product 6, are guided by the grooves of the guide rail 7 provided on the table 13 and move together with the belt 2.

When the product 6 is transferred from the previous assembly station to the main assembly station and reaches the position shown in the figure, the boss 12 installed on the product 6 hits the stop lever 8 that can move slightly laterally, and the stop lever 8 is guided. It stops when it comes into contact with the end face of the groove formed in the rail 7. The detection switch 18 detects that the product has come to the home position, and the control device 3 instructs the positioning cylinder 9 to operate based on a signal obtained from the detection switch 18. Thereafter, the positioning cylinder 9 raises the positioning pin 10 and fits into the hole of the shorter boss 11 of the product 6, thereby reliably positioning the product 6. On the other hand, when product 6 has arrived at the fixed position,
Detected by the detection switch 18, the control device 3 controls the motor 1.
, and the belt 2 is also stopped.

By stopping the belt 2 even when assembling force is applied from above when assembling parts to the product 6, there is no unnecessary frictional force between the product 6 and the belt 2, and wear on the product 6 and the belt 2 can be prevented. can. Note that if the coefficient of friction between the product 6 and the belt 2 is small, it is not necessarily necessary to stop the belt 2. Thereafter, when the assembly unit (not shown) finishes assembling the parts to the product 6, the control device 3 issues a command in response to a completion signal from the assembly unit (not shown), and the cylinder 9 and the cylinder 9 are activated. , the stop lever 8 that locks the positioning pin 10 and the tall boss 12 is lowered, the belt 2 moves, and the product 6 is sent to the next assembly station again without the boss 11 hitting the stop lever 8. .

In this manner, the speed of this assembly station can be adjusted independently of adjacent assembly stations, and the production efficiency of the assembly line as a whole can be significantly improved. As explained above, according to the present invention, the conventionally used movable base can be eliminated, and even with a simple structure, products can be automatically assembled at the assembly position simply by placing them on the belt conveyor. Therefore, it is possible to obtain an assembly line base machine that is economical and independent from other assembly stations.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the assembly line base machine according to the present invention, FIG. 2 is a partial side view showing a partial cross section of the assembly line base machine shown in FIG. 1, and FIG. FIG.

Claims (1)

[Claims] 1. A table that independently constitutes each station of an assembly line is provided with a belt conveyor that runs on the surface of the table and conveys the object by frictional force with the weight of the object, and a belt conveyor that runs perpendicularly to the surface. a guide means having a U-groove that is open and engages with a convex portion provided on the conveyed article to guide the conveyed article; a stopper that engages with a convex portion of the conveyed object to stop the conveyed object at a working position; a first drive means that moves the stopper into and out of the U-groove; a positioning member for positioning the conveyed object by engaging with a positioning portion formed on the positioning member; a detection means for detecting that the conveyed object has stopped by the stopper; and a positioning member for positioning the conveyed object by a signal from the detection means a second actuating member that engages with the positioning portion of the conveyed object to position the conveyed object at a working position;
An assembly line base machine characterized by being provided with a driving means.