JPH0143214Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to an automatic take-out device that clamps and takes out molded products such as plastics and rubber or molding residues from a molding machine.

<Prior art> Conventionally, as a device for clamping and taking out plastic or rubber molding residue or molded products produced during molding by a molding machine, a clamping section having a clamping piece is used, as shown in Japanese Utility Model Publication No. 14778/1983. A take-out device has been proposed that is configured to be able to push out the liquid back and forth using a fluid pressure cylinder.

<Problem to be solved by the invention> However, the conventional extraction device of this type has three wires each for opening and closing the pinch piece, for swinging the holding part, and for moving the holding part back and forth. This structure uses air cylinders, which requires multiple air cylinders and increases the number of control parts such as valves. In particular, flexible air piping is used to install the air cylinders in the moving parts. , this is the cause of failure.

<Means for solving the problem> The present invention does not install a fluid pressure cylinder in the movable part, but uses a single fluid pressure cylinder for forward and backward movement to perform clamping, and can take out objects and prevent failures. The object of the present invention is to provide an automatic take-out device with a simple structure with less.

For this reason, the automatic extraction device of the present invention operates by a single fluid pressure cylinder fixed to the mounting plate.
An automatic take-out device that moves a clamping part and grips and takes out an object with a clamping arm of the clamping part, wherein a slide member connected to a piston rod of a fluid pressure cylinder is slidably fitted into a housing of the clamping part. When inserted, a pair of holder blocks are rotatably supported, each holder block is provided with a protruding holding arm facing each other, and the holder block and the slide member are connected via a link.
A guide bar is slidably supported on the mounting plate in parallel with the piston rod of the hydraulic cylinder, the tip of the guide bar is connected to the housing of the clamping part, and the distal end of the guide bar is connected to another member at its forward end. A stopper is provided which stops when the
A spring is applied between the pair of holder blocks to bias the clamping arm toward the clamping side in the clamping state and toward the opening side in the open state.

<Example> Hereinafter, an example of this invention will be described based on the drawings.

FIG. 1 shows a plan view of the automatic extraction device, and FIG. 2 shows an enlarged cross-sectional view taken along the line AA in FIG. Reference numeral 1 denotes a mounting plate fixed to a molding machine (not shown), and one fluid pressure cylinder 2 is horizontally fixed to this mounting plate 1, and the tip of its piston rod 3 is connected to a slide member 5 of a clamping part 4. Ru.

Reference numeral 6 denotes guide blocks arranged on both sides of the clamping part 4 (Fig. 3), 7 a guide plate fixed between both guide blocks 6 on the upper and lower surfaces of the clamping part 4, and a housing of the clamping part 4. is formed by these guide plates 7 and guide blocks 6 on both sides, and a slide member 5 is installed in the inner space of the housing.
is inserted so that it can be slid back and forth.

As shown in the cross-sectional view of FIG. 2, a low stepped portion is formed at the top of the tip of the slide member 5, and two links 8 are pivotally supported on both sides by pins 9 on this stepped portion. A pair of holder blocks 10 are pivotally supported on both sides by two pins 11 at the inner front portions of the upper and lower guide plates 7. Then, two links 8 connect to these two holder blocks 1, respectively.
0 by a pin 12, and the two holder blocks 10
can rotate in opposite directions about the pin 11. Holding arms 13 are fixed to the holder blocks 10 on both sides so as to face each other and are opened and closed by the rotation of these arms.

Reference numeral 14 denotes two guide bars arranged in parallel on both sides of the piston rod 3, the tips of which are fixed to both guide blocks 6 of the housing, and each supported by a sliding bearing 15 fixed to the mounting plate 1. Ru. A double nut stopper 16 is attached to the distal end of the guide bar 14, and the stopper 16 is a double nut that stops against a sliding bearing 15 at its forward end, and the protruding length of the guide bar 14 can be adjusted by rotating the nut.

17 is a pin 18 between the holder blocks 10 on both sides.
The tension coil spring latched through applies a clamping force to the clamping arm 13 during the clamping operation, and biases it in the opening direction when the arm 13 is opened.

Next, the operation of the automatic take-out device having the above configuration will be explained.

When the molding work in the molding machine is finished and the mold etc. is opened, this ejecting device starts operating and the first
As shown in the figure, two holder blocks 10 are pivotally supported by pins 11 on the guide plate 7 of the holding part 4.
With the clamping arm 13 in the open state due to the bias of the tension coil spring 17, the fluid pressure cylinder 2
operates to push out the piston rod 3, pushing out the clamping part 4 to the forward end.

After that, when the fluid pressure cylinder 2 continues to push out the piston rod 3 to the extrusion end, the guide bar 14 hits the stopper 16 at the end against the sliding bearing, and since it has already stopped at the extrusion end, the clamping part 4 The slide member 5 is pushed forward within the
Due to this sliding extrusion, the two holder blocks 10 are rotated about the pins 11 via the links 8 in the direction of closing each of the clamping arms 13. When the position of the tension coil spring 17 exceeds the pin 11, the tension force of this spring acts in a direction to close the clamping arms 13 on both sides, and as shown in FIG. The molding residue 20 is held by a spring force.

Next, when the fluid pressure cylinder 2 pulls back the piston rod 3, the clamping part 4 is pulled back while clamping the molding residual material 20, and at the retracted end, the guide block 6 of the clamping part 4 is moved to the end of the sliding bearing 15. At this point, the piston rod 3 is further pulled back a little. At this time, the slide member 5 overcomes the sliding friction and the force of the tension coil spring 17 against the main body of the clamping part 4 and slides in the retracting direction, thereby holding the holders on both sides as shown in FIG. The block 10 rotates around the pin 11 to open the clamping arm 13, and the clamped molding residue 20 falls into a chute or the like.

Then, when the fluid pressure cylinder 2 pushes the piston rod 3 to the position shown in FIG. It is closed by the pushing force of the fluid pressure cylinder 2.

<Effects of the invention> As explained above, according to the automatic extraction device of this invention, the slide member connected to the piston rod of the fluid pressure cylinder is slidably inserted into the housing of the clamping part, and A pair of holder blocks are rotatably supported, each holder block has a protruding holding arm facing each other, the holder block and the slide member are connected via a link, and the guide bar is attached to the mounting arm. The guide bar is slidably supported on the plate in parallel with the piston rod of the fluid pressure cylinder, the tip of the guide bar is connected to the housing of the holding part, and the distal end of the guide bar is stopped when its forward end hits another member. Since a stopper is provided and a spring is applied between the pair of holder blocks to bias the clamping arm toward the clamping side and the opening side, a single fluid pressure cylinder fixed to the mounting plate can handle the molded product or molded product. It is possible to take out residual materials, etc., and there is no need for a fluid pressure cylinder attached to a movable part as in the past, so it is possible to prevent breakdowns due to deterioration of flexible piping or loosening of various parts. In addition, since only one fluid pressure cylinder is used, the number of control parts such as valves can be reduced compared to the past, and manufacturing costs can be reduced.

[Brief explanation of the drawing]

The figures show an embodiment of this invention, in which Fig. 1 is a plan view of the automatic extraction device, Fig. 2 is an enlarged sectional view taken along line A-A of Fig. 1, Fig. 3 is an enlarged front view of the same device, and Fig. 4 5 is a plan view of the device in the clamped state, and FIG. 5 is a plan view of the device in the pulled-back state. 1...Mounting plate, 2...Fluid pressure cylinder, 3...
Piston rod, 4... Holding part, 5... Slide member, 6... Guide block, 7... Guide plate, 8... Link, 10... Holder block,
13...Pinching arm, 14...Guide bar, 17
...Tension coil spring.

Claims (1)

[Claims for Utility Model Registration] An automatic take-out device that moves a clamping part by the operation of a single fluid pressure cylinder fixed to a mounting plate, and grips and takes out an object with a clamping arm of the clamping part, comprising: A slide member connected to the piston rod of the fluid pressure cylinder is slidably inserted into the housing of the holding portion, and a pair of holder blocks are rotatably supported, each holder block having a the clamping arms are protrudingly provided opposite to each other;
The holder block and the slide member are connected via a link, a guide bar is slidably supported on the mounting plate in parallel with the piston rod of the fluid pressure cylinder, and the tip of the guide bar is connected to the housing of the clamping part. A stopper is provided at the lower end of the guide bar, and the stopper stops when the forward end of the guide bar hits another member, and the clamping arm is clamped between the pair of holder blocks and moved to the clamping side and opened. An automatic take-out device characterized by being loaded with a spring that biases it toward the open side.