JPH0319926Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is a so-called sequential opening type filter press in which the slag is removed by opening a large number of parallel plates one by one or several plates after finishing. This invention relates to an improvement of a plate-opening drive device.

"Prior Art" This type of plate opening driving device for a filter press includes, for example, the one shown in Figures 1 to 4 of Japanese Utility Model Application No. 55-153114, and
There is something like No. 2303. In the case of Utility Model Application Publication No. 55-153114, when the plate is fed to a predetermined position, the bearing plate 8 swings due to the load applied to this plate.
This is a device that acts on limit switches 22 and 23 to change the rotation of the reversible motor 1 (see Fig. 3), and the device of Utility Model Publication No. 44-2303 also operates by the resistance applied to the operating device 4. , the motor stand 10 swings and a switch is pressed to change the rotation of the motor.

``Problem that the invention attempts to solve'' However, in the motor rotation switching device as described above, the rotation of the motor does not change immediately when the feed pawl comes into contact with the plate. After the time feed pawl is pressed against the plate, the motor reverses, and the feed pawl is separated from the plate. For this reason, a soft plate made of synthetic resin or the like has the disadvantage of being damaged by the feed pawl. For example, in Utility Model Publication No. 44-2303, only the angle at which the stand of the motor 7 swings is the only part of the motor 7.
Unable to release the rotation, the tension of the cable 5 is increased and the opening/closing claw 4 presses the plate strongly.

"Means for Solving the Problem" This invention solves the problems of the prior art as described above, and its gist is to sequentially open a large number of parallel plates after they have been completed. In a filter press configured to take out slag, the left and right running pieces of an endless chain wound around the sprocket of the forward/reverse motor shaft for driving plate opening, which is installed on the machine frame, are suspended from the machine frame. The suspension is then wound around a pair of left and right floating sprockets, and then wound around the drive sprocket of the plate feeding chain, and the relative position of the suspended floating sprockets is adjusted in conjunction with the displacement of one, so that the other The direction of displacement is the opposite direction.

"Function" The device according to this invention is constructed as described above, and in particular, a pair of floating sprockets interposed between the motor and the endless belt drive sprocket for driving the plate opening interlock with each other, Since the relative positions are displaceable, when the feed pawl of the plate comes into contact with the plate, of the pair of floating sprockets, the floating sprocket that is located on the side that is wound by the drive motor will move toward the motor side. At the same time, the other floating sprocket is displaced away from the motor. That is, the chain travels the distance that these floating sprockets are displaced, and the motor can rotate by that distance, and when the feed pawl comes into contact with the plate, the contact force is relaxed. In the conventional model, there was only a slight play in the rotation of the motor, and after contact, due to inertia force, the contact force increased until the motor started to reverse, causing damage to the plate. , the idler wheel is displaced and the idle rotation of the motor can be increased, and during the idle rotation of the motor,
The pressing force applied to the plate is constant and does not damage the plate.

"Example" To explain this in detail based on the drawings, in FIG.
The plates 4 arranged in parallel on the guide rail 3 bridged between them are chains for moving the plate 1, and are reciprocatably routed between the left and right sprockets 5 and 6. In 4,
Feeding claws 7a and 7b for the plate 1 are provided. The operating mechanism of the chain 4 provided with the feed claws 7a and 7b is constructed as follows, as shown at the left end in FIG. A drive motor 9 is installed on a support frame 8 extending from the frame 2, and a pair of idlers 11, 11 are connected between a sprocket 10 provided on the shaft of the motor 9 and a sprocket provided on the drive shaft of the sprocket 5 described above. A chain 12 is routed through the chain 4 to transmit the power of the drive motor 9 to the chain 4, and a wire 1 is connected to the supporting bracket of the idler wheels 11, 11.
3, 13 are connected, and this wire 13, 1
3 is wound around pulleys 14, 14 provided on the machine frame, and weights 15, 15 are connected to the free ends thereof. Further, compression springs 16, 16 are provided between the weights 15, 15 and the machine frame 8, and the idler wheels 11, 11 are attached to the machine frame by wires 13, 13 and pulleys 14, 14. The weights 15, 15 are suspended and displaceable up and down with respect to the machine frame, but the weights 15, 15 are balanced at the same level by the compression springs 16, 16. Further, an operating rod 19 is provided at the upper end of the weight 15, as shown in FIG. 17, 17 are provided, the operating rods 18, 18 of which are placed within the operating range of the operating rods 19, 19.

Since the device according to this invention is constructed as described above, it operates as follows. In Figure 1,
Now, if the feed claw 7a moves the plate 1 to the right in the figure, moves it to the end, and comes into contact with the plate 1 that has already been fed, the motor 9 rotates in the direction shown by arrow A. are doing. Therefore, chain 4
A tension force acts in the direction of arrow A'. However, since the chain 4 cannot run because the feed pawl 7a is in contact with it as described above, the left idler wheel 11 is pulled down against the weight 15 and spring 16 on the left side in the figure. Along with this, the right weight 15 is lowered. This idler wheel 1
1, the operating rod 19 provided at the upper end of the weight on the left side of the figure rises, acting on the operating rod 18 of the limit switch 17 provided on the machine frame, and causing the motor 9 to reverse. As is clear from the above explanation, the force with which the feed pawl 7a contacts and presses the plate 1 is the same as the force with which the motor 9 pulls up the weight 15 against the spring 16. Compared to this type of device, the pressure on the plate increased in proportion to the elapse of time until the feed claw came into contact with the plate 1 and the motor started to rotate in reverse. In this case, after the feed pawl 7a contacts the plate 1, the pressing force is relaxed for a certain period of time, and then the motor 9 is reversed. During this period, the force with which the feed pawl 7a presses the plate 1 is constant. . That is, the pressing force on the plate 1 due to the inertial rotation of the motor 9 after the switch is changed can be absorbed by the displacement of the idler wheel 11, thereby preventing the feed pawl 7a from damaging the plate 1. Also,
This device can prevent a large tension from being applied to the chain 4 due to inertial rotation until the motor 9 starts reverse rotation, and can also prevent an excessive load from being applied to the motor itself. be. The above explanation is based on the board shown in Fig. 1.
In the case where the feed claw 7b moves to the left in the figure in order to feed the next plate and comes into contact with the leading plate, the motor 9 rotates in the direction shown by arrow B. , the chain 4 travels in the direction of arrow R', and the weight 15 on the right side in the figure is pulled up to prevent damage to the plate 1 as described above.

"Effects of the Invention" As detailed above, the plate opening drive device according to the invention, compared to conventional devices of this type, has a lower speed when reversing the feed claw after transferring the plate. This method does not apply excessive pressure to the board and can prevent damage to the board, and is particularly effective when used for boards that are made of synthetic resin or the like and have relatively low hardness. Further, according to this invention, an excessive load is not applied to the motor, the plate conveyance chain, etc., and therefore it is advantageous in terms of manufacturing costs and maintenance management.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a filter press to which this invention has been applied, showing the essential parts of this invention in an enlarged cutaway. FIG. 2 is a right side view of the main parts of the device, and FIG. 3 is a front view seen from the direction indicated by arrow A in FIG. Code explanation, 1... board, 4... chain, 9...
...Motor, 11...Idle wheel, 12...Chain.

Claims (1)

[Scope of utility model registration request] In a filter press configured to sequentially open a large number of parallel plates 1 to take out the slag after finishing, an endless type of The chain 12 is wound around a pair of left and right floating sprockets 11, 11 suspended from the machine frame, and then wound around the drive sprocket of the plate feeding chain 4, and then A plate opening drive device for a filter press, characterized in that the relative positions of floating sprockets 11, 11 are interlocked with the displacement of one so that the other is displaced in a direction opposite to the displacement direction of one.