JPS5832822Y2 - Press molding machine product ejecting device - Google Patents

Description

[Detailed description of the invention] Technological classification> The disclosed technology belongs to the technical field of autonomously ejecting and returning the product by operating a product ejection device that operates integrally with the raising and lowering of the ram of a press molding machine. .

Explanation of the gist> This invention is based on the idea that the cam of one frame, which is integrally attached to the upper bolster of a press molding machine, is connected to the slider that is attached to the other frame, which is also integrally attached to the lower bolster. It engages with a fixed cam follower and applies reset energy to the elastic spring, as well as ejecting energy to perform the prescribed forming. When the upper and lower dies are separated, the other frame is tightened and the product is shaped by the ejecting energy. This invention relates to a device for ejecting a product that is reset at the same time as it ejects the product.In particular, a slider is slidably provided on the other frame of the cam and the cam follower.
A return spring and a spring are provided between the other frame and a kicker inserted between the two frames through engagement, and the pusher is triggered to engage the stopper of the frame, and the slider is inserted into the frame. This invention relates to a product ejecting device for a press molding machine that is engaged with a hook, and the hook is released to a hanger on one frame.

<Prior art> As is well known, press bottoms are widely used in various manufacturing fields, but of course, press lines mainly operate in cycles, and therefore press processing and discharge of press-formed products are difficult. must be performed synchronously, and aside from special large presses, up until now, an air cylinder set or an air blower has been used separately from the press molding machine for buttoning and discharging medium to small products. Therefore, since the device for pushing out the product itself is installed separately, there is a disadvantage that the device becomes expensive, and it is also disadvantageous in terms of energy saving as it consumes extra electricity, and a synchronous control management system is also required. , it had the disadvantage of being complicated.

<Problems with the prior art> To deal with this, some mechanisms have been devised and adopted in which the frame is directly connected to the bolster of the press molding machine and taken out via a latch mechanism. It is difficult to use the latch type in processes that involve bending, all-around forming, or short stroke forming processes, and therefore, manual removal is required, which increases cycle time. Ta.

<Purpose of the invention> The purpose of this invention is to solve the problem of product ejection of the press molding machine based on the above-mentioned conventional technology as a technical problem to be solved, and to advance the molding machine using the molding process and improve the product molding and demolding process. The energy applied to the compression spring pushes out the product and resets the kicker, making press recycling possible. Automatic ejection is also possible for all-around molded products, and product removal is instantaneous even in molding machines with small operating amounts. It is an object of the present invention to provide an excellent product ejecting device for a press molding machine, which is useful for product ejecting application fields in the press processing industry.

<Structure of the invention> In line with the above-mentioned purpose, the structure of this invention, whose gist is the above-mentioned utility model registration claim, is to solve the above-mentioned problems by having one frame attached to the pressing process of a press-forming machine. A stopper on one frame that is relatively close to the other frame engages the trigger of a locker loosely inserted into the other frame to restrict axial movement, and a cam on one frame fixes the slider on the other frame. The slider engages with the cam follower of the frame and slides in the axial direction of the other frame, compresses the return spring between the frame and the other frame, and also prevents the spring from moving between the slider and the kicker. The spring is also compressed, and the slider is restrained by a hook provided on the other frame. In this state, press molding is performed in a predetermined manner, and after molding, the trigger is released in the process of releasing both frames. It detaches from the stopper and the product is instantly pushed out by the compression spring, and then in the opening stroke, the hook of one frame is released and the slider is reset by the return spring. This was achieved by taking technical measures to

<Embodiment - Configuration> Next, one embodiment of this invention will be described below based on the drawings.

Reference numeral 1 is a product ejecting device that embodies the gist of this invention, and one frame 2 is integrally attached to an upper die holder 6 to which an upper die 5 of a fixed ram 4 of a press forming machine 3 is attached. A hanger 8 having a hook 7 at the tip is fixedly extended to the front side thereof, and a button 8 is fixedly extended thereto, and a pair of plate-shaped cams 9 are fixed downwardly to both rear sides. Furthermore, a bar-shaped stopper 10 is also fixed at the lower end of the rear end.

On the other hand, the lower frame 11 as the other frame of the push-out device 1 is integrally attached to a lower mold bolster 6' in which a lower mold 5' is attached to a lower movable ram 4'. 11', 1r has a cross section U on the surface 12 where the stopper surface is tossed.
A square-shaped slider 13 has the cams 9 on both sides of the rear thereof.
Cam followers 14, 14 which can be engaged with the cam followers 9 are fixed by welding and extend laterally so as to be freely slidable.

Further, a hook 16 is pivotally supported by a pin on the upper part of the front stopper surface 11'' of the frame 11 via a bracket 15 so as to be able to swing in the vertical direction, and its front end is connected to the slider 13.
A pin 18 embedded in the arm portion and extending laterally is always positioned above the hook of the holder 8 so that it can be engaged with it.

A bar-shaped trigger 19 is provided to loosely insert the slider 13 and frame 11, and a plate-shaped trigger 20 that engages with the stopper 10 is fixedly attached to the rear end thereof.

A return spring 21 is interposed between the front wall 17 of the slider 13 and the stopper surface 1f of the lower frame 11 by being inserted into the loosely inserted kicker 19. A spring 23 is interposed between the slider 13 and a bushing 22 fixed to a predetermined position inside the slider 13.

Note that 24 is a workpiece to be pressed.

<Embodiment - Effect> In the above configuration, as shown in FIG. 2, the lower ram 4' is at the bottom dead center, which is the initial phase state of the press cycle, where the workpiece 24 is placed on the lower die 5' in a predetermined position. When the press cycle is started, the lower ram 4' is raised by a drive crank (not shown) as shown by the arrow, and the lower frame 11 begins to rise together with the lower mold bolster 6'.

In this case, as described above, since the lower end hook 7 of the upper frame 20 nozzle 8 is lower than the pin 18 of the hook 16, the lower end hook 7 of the upper frame 20 nozzle 8 is in contact with the pin 18 of the hook 16, and the nozzle 8 makes the hook 16 tilt upward. .

In this way, when the lower frame 11 rises, the third,
As shown in FIG. 4, the trigger 20 first rises so as to overlap the outside of the stopper 10, and then both cams 9, 9 move relatively close to each other so as to engage with the cam followers 14, 14 of the slider 13.

Therefore, the slider 13 moves forward along the surface 12 of the lower frame 11, but the kicker 19 is restrained through the abutment of the trigger 20 against the stopper 10.
The slider 13 also moves forward relative to the kicker 19 in an extrapolative manner, and as a result, the spring 23 moves forward relative to the kicker 19.
It is compressed between the bush 22 fixed to the bush 9 and the rear surface of the slider 13, and the energy is stored.

Further, the return spring 21 interposed between the front surface of the slider 13 and the front stopper surface 11'' of the lower frame 11 is also compressed and return energy is stored.

During this time, the hook 16 is hooked to the upper edge of the front wall surface of the advancing slider 13 by the lower frame 11 rising, and assumes a horizontal position, and the slider 8 is relatively lowered.

On the other hand, the workpiece 24 is press-molded into a predetermined shape by the upper and lower dies 5 and 5'.

Of course, as mentioned above, the forming can also be performed by drawing, all-around forming, etc.

In this way, when the lower ram 4' reaches the top dead center, press forming is completed, and the lowering cycle begins, the cam 9.9 is disengaged from the cam followers 14, 14, and the trigger 20 is subsequently disengaged from the stopper 10. 0 Therefore, at that moment, the bush 22 and the slider 13
Due to the energy of the spring 23 compressed in the meantime, the kicker 19 moves forward rapidly as shown by the arrow in FIG. 5, and the workpiece 24 is ejected from the lower die 5' as shown by the arrow.

Similarly, the kicker 19 is stopped by contacting the rear stopper surface 11' of the lower frame 11 of the trigger 20, and the slider 13 is still stopped by the engagement of the hook 16 with the upper edge of its front wall surface.

When the lower ram 4' further descends, the nozzle 8 again engages with the pin 18 of the hook 16 and tilts the hook 16 upward, so that the hook 16 becomes a slider. As a result, the slider 13 is moved backward by the energy of the compressed return spring 21 and stops against the rear stopper surface 11' of the lower frame 11. Kitsuka 19 also retreats and is reset to its initial position.

Then, the above-mentioned cycle is repeated.

Other Examples> It goes without saying that the embodiments of this invention are not limited to the above-mentioned embodiments; for example, a mode in which the upper die moves up and down relative to the lower die is also possible, and various modes can be adopted. It is possible.

<Effects of the invention> According to this invention, the upper bolster of the press molding machine
The cam, stopper and...
・A slider is provided on the other frame attached to the lower bolster, a return spring is attached to the other frame, and a spring is inserted between the slider and the kicker loosely inserted in the slider. interposed, and the slider is capable of being hooked to a hook of the other frame that engages with the...
Furthermore, the trigger of the kicker can be freely engaged with the stopper, and the cam follower fixed to the slider can be freely engaged with the cam, so that the cam and cam follower can basically be moved up and down by the ram to release the return spring and the cam follower. By compressing the spring spring, it is possible to store the spring energy and return energy during the demolding process after the molding process.
It has the excellent effect of being able to spring out and reset completely automatically in synchronization with the press cycle without relying on other devices.

In addition, since both frames can be set by engaging the cam and cam follower, unlike latch types, the ejecting and resetting can be performed reliably even when drawing, full circumference machining, short stroke machining, etc. It is versatile and has excellent effects.

Furthermore, since the slider has a return spring and also has a spring spring between it and the kicker, the slider is not only reset at the moment the hook comes off, but the kicker is also reset along with it. It also has the effect of being able to be reset completely automatically.

In addition, since the engagement relationship is performed by a cam and a cam follower, the structure is relatively simple, and it has the advantage of being easy to install and easy to maintain.

[Brief explanation of the drawing]

The drawings are explanatory diagrams of one embodiment of this invention, and FIG. 1 is a partial perspective explanatory diagram, FIG. 2 is an explanatory diagram of the initial stage of the cycle, and the third and fourth
The figures are a partial cross-sectional plane explanatory view and a side explanatory view at the middle stage of the cycle, and FIG. 5 is an explanatory view of the protruding state. 3...Fress molding machine, 6...Upper mold bolster-12.
... One frame, 9... Cam, 6'... Lower bolster 11... Other frame, 19... Kicker, 1... Splashing device, 13... Slider 2
1...Return spring, 16...Hook, 23...Spring spring, 10...Stopper, 20...)'J Gar 8...Bunker.

Claims (1)

[Scope of utility model registration request] Products in which a cam is attached to one frame attached to the upper bolster of the press molding machine, and a kicker that is loosely inserted into the other frame attached to the lower bolster are provided with a compression spring interposed. A slider is slidably provided on the other frame by pressing a button on the extrusion device, and a return spring is interposed between the slider and the other frame, and the slider is engageable with a hook provided on the other frame; A spring is interposed between the other frame and the slider, and a cam follower fixed to the slider engages with a cam attached to the one frame. It has a trigger that engages with the stopper of the one frame, and is provided on the one frame above the father.
1. A product ejecting device for a press molding machine, characterized in that a finger is freely engageable with the hook.