JPS59334B2 - assembly line base machine - Google Patents

Description

[Detailed description of the invention] The present invention relates to assembly line-based machines.

Conventional automatic rivalry base machines use one continuous base machine for a plurality of stations, and have the disadvantage that if one station stops due to trouble, the other stations will also stop.

In order to reduce this drawback, there are free and cycle type base machines, but even in this case, if the stoppage is for a short time due to a simple problem, it is necessary to use buffer stock before and after the station, or manually move the base machine to another station. Although it is possible to reduce the impact on the station, if a complicated trouble occurs and the station is repaired or adjusted, it is difficult to continue the installation manually at the adjacent station. Another disadvantage was that all stations would stop if a problem occurred with the base machine itself. The purpose of the present invention is to eliminate the above-mentioned conventional drawbacks, improve the operating rate of the entire assembly line from the initial stage of introduction of the assembly line, and make it possible to freely change the line configuration by using a common base machine for each station. It is possible to provide a versatile assembly line based machine.

That is, the present invention provides a plurality of belt conveyors for conveying conveyed objects, a drive motor for driving the plurality of belt conveyors via a coupling mechanism, and a drive motor that is provided between the plurality of belt conveyors and a lower surface of the conveyed object. a guide rail that guides a plurality of protrusions planted on the conveyor; a lever member that engages with the protrusions planted on the lower surface of the conveyed object to move slightly in the direction of the conveyor; and a lever member that moves the lever member in the direction of the conveyor's travel direction; a stopper means for stopping the conveyed object conveyed by the belt conveyor at the working position, and a stopper means for stopping the conveyed object conveyed by the belt conveyor at the working position; an engagement release means for disengaging one end of the lever member from engagement with the protrusion by moving the lever member in a direction substantially perpendicular to the lever member; a detection means for detecting movement of the lever member; and a signal detected by the detection means. a table member equipped with a positioning means for positioning the conveyed object at a working position by fitting a positioning pin from below into a positioning hole formed in the conveyed object based on the table member, the disengagement means, and the positioning means; An assembly line base machine characterized in that a base machine composed of a control device for controlling the assembly line is provided independently at each station, and the base machines constituting the assembly line can be rearranged or replaced at each station. It is.

The present invention will be specifically described below with reference to embodiments shown in the drawings. FIG. 1 is a plan view of an embodiment of an independent free cycle base machine according to the present invention, FIG. 2 is a front view, and FIG. 3 is a side view, showing a belt 2 for transporting products, a drive motor 1 and a control device 15 at each independent station, and a table member provided with a manual work space 17 and a component assembly unit space 16 into which an operator can put his or her feet. With this configuration, by attaching a built-in unit (not shown) to the built-in unit space 16 of the table member, automatic operation can be performed as described below.

That is, the belt 2 is constantly moved in the direction of the arrow by the motor 1,
The products 3 on the two belts 2 are moved together with the belts 2 from one end of the table member to the other end by being guided by a guide rail 4, which has a boss planted on the lower surface of the products 3.

When the product 3, which is a pallet, reaches the position shown in the figure from the front station, the boss installed on the bottom surface of the product 3 hits the stop lever 5, and the stop lever 5 overcomes the spring 6, and slips with the belt 2 at a predetermined position. Product 3, which is a pallet, is stopped. Stop lever 5 and switch 7
detects that the product 3 has come to the fixed position, and moves the movable base 8
The cylinder 9 is instructed to rise. The movement of the movable base 8 is stopped by the stopper play port 0 to determine the vertical position, and the horizontal positioning is performed using two positioning pins 11 provided on the movable base 8 and two positioning holes drilled in the product. (not shown). Note that the product 3 is held down by a keeper pin 13 and a spring 14 so that it does not fly upward. When the assembling unit (not shown) finishes assembling the parts of the product, the movable base 8 descends and the product 3 contacts the belt 2 again, and moves to the next station in the direction of the arrow according to the signal detected from the switch 7. Therefore, control for raising the movable base 8 and lowering the movable base 8 in response to a completion signal from the assembly unit is performed by sequential signals from the control device 15. Further, when performing manual work, by having a person present in the manual work space 17, parts can be assembled to the product without using the built-in unit. These independent stations come together to form an assembly line.

As described above, according to the present invention, there is a conveyor for conveying pallets at each station, a drive source for driving the conveyor, a means for freely stopping and positioning the pallet at a working position, and a control for controlling the drive source and the means. Since we have an assembly line base machine equipped with equipment, if it is necessary to make adjustments between the built-in unit and the base machine, or if a problem occurs with the base machine itself, we can remove the entire base machine from its station, By continuing work with a spare base machine or workbench, etc., it is possible to prevent the front and rear stations or the entire assembly line from stopping.

Therefore, a good operating rate can be obtained for the entire line, which is particularly effective when used for automatic assembly of products with short product line cycles. It is also effective when developing an assembly unit that will be slow to automate and is expected to cause many troubles, and incorporating it into the line. In addition, since each base machine is independent and has versatility, the organization of the assembly line can be freely changed even in the case of product model changes, etc., and there is no need to rebuild the assembly line from scratch. The assembly line can be constructed at a low cost, resulting in extremely economical effects.

Furthermore, according to the present invention, both automatic operation using the built-in unit and manual work can be combined, so even in the event of a problem with the built-in unit, a person can be immediately dispatched to the station before or after, or the entire assembly line. There is no need to stop the system, and the built-in unit can be repaired while this manual work is being carried out.

Furthermore, according to the present invention, the guide rail is installed between the belt conveyors, and the positioning means is configured to operate from below the conveyed object, so that it can be assembled to the conveyed object by an assembly unit or manually. When assembling the object, the guide rail and the positioning means do not get in the way, and work efficiency can be significantly improved. By guiding the object with the protrusion, there is little rotational deviation of the conveyed object in the horizontal plane, and since the positioning means is actuated by the movement of the lever member, the positioning means can be reliably activated and conveyed using a simple mechanism. The position of the object can be precisely regulated, and the conveyed object can be assembled with high reliability.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the assembly line base machine of the present invention, FIG. 2 is a front view showing a partial cross section of FIG. 1,
FIG. 3 is a right side view showing a partial cross section of FIG. 1. Explanation of symbols: 1... Motor, 2... Belt, 15... Control device, 16... Built-in unit space, 17...・Manual work space.

Claims (1)

[Scope of Claims] 1. A plurality of belt conveyors that transport conveyed objects, a drive motor that drives the plurality of belt conveyors via a coupling mechanism, and a drive motor that is provided between the plurality of belt conveyors and that transports the conveyed objects. a guide rail for guiding a plurality of protrusions planted on the lower surface; a lever member that engages with the projections planted on the lower surface of the conveyed object and moves slightly in the direction of the conveyor;
and a return means for returning the lever member to the traveling direction of the conveyor, stopper means for stopping the conveyed object conveyed by the belt conveyor at a working position, and a stopper means for stopping the conveyed object conveyed by the belt conveyor at the working position, an engagement release means for disengaging the one end of the lever portion from the protrusion by moving the one end in a direction substantially perpendicular to the traveling direction;
A detection means for detecting the movement of the lever member; and a positioning pin is fitted from below into a positioning hole formed in the conveyed object based on a signal detected by the detection means to move the conveyed object to a working position. A base machine comprising a table member equipped with a positioning means for positioning, a control device for controlling the disengagement means and the positioning means is provided independently at each station, and the base machine constituting the assembly line is provided independently at each station. An assembly line base machine characterized by being able to be replaced or rearranged at each station. 2. A patent claim characterized in that the positioning means and the disengagement means are constituted by a drive source, a movable base that moves up and down by the drive source, and a positioning pin formed on the movable base. The assembly line base machine described in item 1.