JPS629929A - Automatic replacing method for die - Google Patents

Abstract

PURPOSE:To enable to replace with a new die swiftly and reliably when the die is clogged, by a method wherein a matter that extrusion pressure of a material in the inside of an extrusion machine has arrived at a predetermined value is detected by a detecting member, a first driving member is stopped, the die in service is pulled out, and a new one is arranged at a preset position for setting-up by inserting the same. CONSTITUTION:When extrusion pressure of a material in an extrusion machine 2 arrives at a preset value through the generation of clogging on a die under an operation state wherein a cassette plate 27 is set up at a preset position of the extrusion machine 2, it is detected by a detecting device 40, loading of a material through a supply port 4 of the extruding machine 2 is suspended by a detecting signal and an electric motor 5 is stopped. A cleaning cassette plate 65 is inserted and arranged at a preset position whereform the cassette plate has been pulled out, the remaining material in the inside of the extrusion machine 2 is extruded and discharged into a chute 68 of a deffective article through a discharge hole. A fresh cassette plate 27a is set up at the preset position, whereform the cleaning cassette plate 65 has been pulled out, by pressing the new cassette plate 27a against the extrusion machine 2.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Industrial Application Field The present invention relates to an automatic die exchanging method for an extruder used for molding catalysts, etc.

(2) Conventional technology In conventional extruders, when the die becomes clogged and the molded product comes out irregularly, or when the load on the extruder drive motor exceeds a predetermined value, The extruder was stopped, the die used was removed and replaced with a new die, and the extruder was restarted. Then, after cleaning the used dice that were removed according to 1.
It was put into use again.

(3) Problems to be Solved by the Invention Incidentally, in the conventional extruder described above, the die is attached by tightening bolts, so when replacing the die, the bolts must be removed to remove the used die and replace the new die. In addition to having to install it by tightening bolts, all of the replacement work, including cleaning the dice used, had to be done manually.
There are problems in that the work requires a lot of time and effort, the work efficiency is extremely low, and the operation stop time is significantly prolonged.

The technical object of the present invention is to enable automatic replacement of the used die with a new die quickly and reliably when the die becomes clogged.

(4) Means for Solving the Problems This invention solves the above problems, and the automatic die exchanging method of the first invention is performed on the material discharge side of the extruder driven by the first drive member. a pressing member that is arranged to be reciprocally movable toward the opening and that presses the die against the extruder and sets it in a predetermined position that passes through the opening; a second driving member that reciprocates the pressing member; A moving member arranged with a die movable in the horizontal direction above, a third driving member that moves this moving member, and a $1. A second clamp member, fourth and fifth drive members that independently raise and lower the 1% second clamp member, a detection member that detects the extrusion pressure of the material in the extruder, and controls each of the members. and a control member, and when the detection member detects that the extrusion pressure of the material in the extruder reaches a predetermined value, the first drive member is stopped by the control of the control member that receives this detection signal, and the fourth drive member is stopped. The driving member lowers the first clamp member to clamp the used die set at a predetermined position, and then the second driving member moves the pressing member back to release the pressing of the used die, and then the fourth The drive member raises the first clamp member, pulls out the die to be used, and then moves the third clamp member up.
The movable member is moved by the drive member to stop the second clamp member that has clamped the new die at a predetermined position above, and then the second clamp member is lowered by the fifth drive member to place the new die in the predetermined position. The automatic die changing method of the second invention is characterized by inserting and arranging the new die, and then moving the pressing member forward by the second driving member to press the new die against the extruder number and setting it in a predetermined position. , a pressing member that is arranged to be able to reciprocate toward the material discharge side opening of the extruder driven by the first driving member, and that presses the die against the extruder and sets it in a predetermined position covering the opening; and this pressing member. a second driving member that reciprocates the cleaning die; a third driving member that inserts and removes the cleaning die into the predetermined position; a moving member that is disposed above the extruder so as to be able to move laterally; a fourth driving member that moves; and a first and second driving member that is movably provided on the moving member and that clamps the dice.
A clamp member, @5 and a sixth drive member that independently raise and lower this 1% second clamp member, a detection member that detects the extrusion pressure of the material in the extruder, and each of the parts-1
〇- A control member for controlling the material, and when the detection member detects that the extrusion pressure of the material in the extruder has reached a predetermined value,
Under the control of the control member that receives this detection signal, the first drive member is stopped, and the first clamp member is lowered by the fifth drive member to clamp the used die set at a predetermined position, and then After the pressing member is moved back by the second driving member to release the pressing of the used die, the fourth driving member raises the clamp member and pulls out the used die, and then M4! After the moving member is moved by the iIA moving member and the m2 clamp member that clamps the new die is stopped at a predetermined position above, the cleaning die is inserted into the predetermined position by the third drive member, and then the second drive member The member moves the pressing member forward to force the cleaning die into the extruder and set it in a predetermined position, then the first driving member extrudes the material in the extruder, and then the second driving member pushes the pressing member. After moving back and releasing the pressing of the cleaning die, the cleaning die is pulled out by the third sliding member, and then the second clamping member is moved downward by the sixth driving member.
Insert the new die into the specified position, then insert the second die.
The automatic die exchanging method of the third invention is characterized in that the pressing member is moved forward by the driving member to press a new die against the extruder and set it in a predetermined position. a pressing member that is arranged in a forward motion direction toward the material discharge side opening of the machine and that presses the die against the extruder and sets it in a predetermined position covering the opening part;
A second drive member that reciprocates this pressing member, a die cleaning device that is installed at a predetermined distance from the extruder, and a die cleaning device that can reciprocate in the horizontal direction between the cleaning device and the extruder. a third driving member that reciprocates the moving member; and an eleventh moving member that is provided with a lever that can be raised and lowered;
g 1 and m 2 clamp members that clamp the die, fourth and fifth drive members that independently raise and lower the eleventh and second clamp members, and a detection member that detects the extrusion pressure of the material in the extruder; and a control member that controls each of the members, and when the detection member detects that the extrusion pressure of the material in the extruder reaches a predetermined value, the first NjA moving member is controlled by the control member that receives this detection signal. At the same time, the fourth driving member lowers the first clamping member to clamp the used die set at a predetermined position, and then the second driving member moves the pressing member back to release the pressing of the used die. After that, the first clamp member is raised by the fourth drive member to pull out the used die, and then the moving member is moved forward by the #pJ3 drive member, and the second clamp member, which has clamped the new die, is moved upward to a predetermined position. After the second clamp member is lowered by the fifth drive member and a new die is inserted into a predetermined position,
After that, the pressing member is moved forward by the second driving member to press the new die against the extruder and set it in a predetermined position.
Next, the fifth drive member moves the second clamp member up and down, and the third drive member moves the moving member further forward to wash the first clamp member that has clamped the used dice and stop it above the cleaning device. After that, the fourth drive member
Lower the clamp member, place the die to be used in the cleaning device, release the clamp, clean it, and remove the fourth die.
The first clamp member is raised by the drive member, and then the movable member is moved back by the third drive member to stop the M2 clamp member above the cleaning device, and then the second clamp member is raised by the fifth drive member. The second clamping member is lowered to clamp the cleaned used die, and the second clamping member is raised by the fifth driving member to lift the used die, and then the moving member is further moved backward by the third driving member to clamp the second clamping member to the first one. The invention is characterized in that the second cylinder member is stopped above the predetermined position.

(5) EXAMPLE Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. In FIG. It is equipped in conjunction with the extruder 2. A supply port 4 is provided at one end of the extruder 2 for supplying material from the conveyor 3. 5 is extruder 2
A driving electric motor 6 is an extruder rotation speed adjustment member, and a load detector 7 is attached to the electric motor 5.

The other end surface of the extruder 2 on the material discharge side has an opening 8 as shown in FIG. 2, and an outward flange 9 is integrally provided at this open end. At a position facing the flange 9,
A cylinder mounting plate 10 is disposed, and a plurality of guide rods 12 are horizontally installed between the mounting plate io and the 7-lunge 9, and both ends of the guide rods 12 are fixed to each other.

A support cylinder portion 16 of a die holding unit 15 is slidably fitted into the guide rod 12 .

The die holding unit 15 is assembled by fixing a front member 18 and a rear member 20 to a port 23 via a connecting member 22 having a support cylinder portion 16.

A holding part 25 that is larger than the opening 8 of the extruder 2 is formed on the front edge of the front member 18, and this holding part 25 allows the die cassette plate 27 to be attached to the extruder 2, and the periphery of the cassette plate 270 to be attached to the flange 9. It is possible to press them so that they are in contact with each other. The cassette plate 27 is the second cassette plate.
As shown in FIG. 3, a plurality of openings 30 are arranged in an annular manner around the center hole 2B, and a flange portion 32 with a flange hole 31 formed in the upper part is provided protrudingly. A die 33 is removably fixed. A molded material discharge hole 36 of a desired depth is formed laterally on the front end surface of the front member 18.
is formed with a downward opening. Further, in the center of the front member 18, one end is connected to the center hole 27 of the cassette plate 27.
A pressure measurement hole 38 is formed in the front end surface so as to be able to communicate with the pressure measuring hole 38, and the other end thereof is open in the rear end surface. Pressure measurement hole 38
An extrusion pressure detector 40 is inserted and fixed to the cassette plate 27 through the seat 39, and when the extruder 2 is operated, the extrusion pressure detector 40 is inserted and fixed.
The extrusion pressure can be detected by the material entering through the central hole 28 of the cylinder. The rear member 20 has a hole 42 that is open at the front end surface and upper and lower end surfaces, and a screw hole 44 that is open from the hole 42 by one end at the rear end surface.

The screw hole 44 has a hydraulic cylinder 4 fixed to the mounting plate lO.
A male thread 48 formed at the tip of the rod 6 is screwed together, and a nut 49 is attached.

According to the above, die presser 22) t 5 c Hydraulic pressure'
J+) 7 da 46 presses the cassette plate 27 onto the extruder 2ζ with the presser part 25 at the forward position (solid line in Figure 2), where it is set at a predetermined position, and at the retracted position (state, where the pressing of the cassette plate 27 is released). (solid line state in Figure 2) is reciprocated. Furthermore, on the guide rod 12, 51 is a stop ring for a spring receiver, and 53 is a spring.

As shown in FIG. 1, the hydraulic cylinder 46 is connected to a hydraulic unit 58 via a conduit 56 having a solenoid valve 55, and is connected to the hydraulic unit 58 via a conduit 62 having a solenoid valve 60 for cleaning. Hydraulic cylinder 6 for driving cassette plate
4 are connected. The hydraulic cylinder 64 is installed at a position facing from the side at a predetermined position where the cassette plate 27 is set (in the drawing, it is viewed from below), and a cleaning cassette plate 65 is engaged with the tip of the rod. It is configured so that it can be inserted into and removed from a predetermined position.

As shown in FIG. 4.5, the cleaning cassette plate 65 has a plurality of openings 65m arranged in an annular manner around the center, and a cutter knife 65b on the surface facing the extruder 2.
It is pushed in and fixed by tightening the bolts. 65a is a groove for storing the remaining material scraps cut by the cutter knife 65b, 65d is an edge formed on the tip edge on the opposite side from the extruder 2, and 67.68 is a discharge hole 36.
When the Dan Al 170 opens either one of the chute (which receives the molded products discharged from the molded product) and the defective chute using the cylinder 72, the other chute is closed.

On the other hand, at a position separated from the extruder 2 by a predetermined distance, a cleaning box 75 is installed which is open at the top and has a holding section 74 inside which positions and holds the cassette plate 27 at a predetermined position. The holding part 74 is a pair of holding guide pieces 74 that slidably guide and hold both side edges of the cassette plate 270 housed in the cleaning box 75 as shown in FIG.
This holding guide piece 74m, 74b consists of
are provided protrudingly on the opposing inner surfaces of the cleaning box 75. Inside the cleaning box 75 is a cleaning nozzle 7 that cleans the cassette plate held by the holding part 74 by spraying high-pressure water.
7 is rotatably provided. The rotating shaft of the cleaning nozzle 77 protrudes outside the cleaning box 75, and a drive shaft of an electric motor 80 is connected to this protruding rotating shaft via a gearing mechanism 78. Further, a high-pressure water pump 82 is connected to the cleaning nozzle 77 via a pipe line 83. A door 85 opens and closes the upper opening of the holding part 74, and is driven by a cylinder 87.

Above between the cleaning box 75 and the extruder 2, there is a first
As shown in the figure, a horizontal guide rail 90 is provided, and a transport trolley 92 for transporting the cassette plate 27 is installed on this guide rail 90 so as to be reciprocally movable by an electric motor 93. cylinder 94.9
A pair of clamp members 97 and 98 each independently movable up and down by means of the clamp members 97 and 98 are arranged side by side in the direction of movement of the trolley 92, and each clamp member 97 and 98 is operated by a built-in rotary actuator.

Clamp claw e 7', 9 sl to cassette plate 27
into the hole 31 of the clamp part 32 of the cassette plate 2.
7 can be clamped.

Next, the operation of the above embodiment will be explained.

The transport cart 92 is in the standby position, and the cassette plate 27
In the operating state shown in Fig. 1, in which the die 3:1 is set at a predetermined position in the extruder 2, if the die 3:1 becomes clogged and the extrusion pressure of the material in the extruder 2 reaches a predetermined value, this is detected. When the load on the electric motor 5 reaches a predetermined value, the detector 7 detects this. The detection signal from either of the detectors 40 or 7 causes the conveyor 3 to
After stopping the input of material into the supply port 4 of the extruder 2 and lowering the rotation speed using the rotation speed adjustment member 6, the electric motor 5
stop. Thereafter, the clamp member 97 is lowered from the cylinder 944, and the used cassette plate 27 set at a predetermined position in the extruder 2 is clamped by inserting the clamp claw 97' into the hole 31 of the clamp part 32.

Next, the presser unit 15 is moved backward by the cylinder 46 to release the pressing of the used cassette plate 27, and then the clamp member 97 is removed by the cylinder 94, and the used cassette plate 27 is pulled out from the predetermined position. Next, the transport cart 92 is moved forward by the electric motor 93, and the clamp member 98, which has previously clamped the new cassette set plate 27 (including those that have been cleaned and reused), is transferred to the extruder 2.
Stop at a predetermined position above.

Then, the damper 70 is delivered to the defective product side 7 unit 68 by the cylinder 72. In other words, the defective product chute 68
is opened and the good product chute 67 is closed. Almost simultaneously with the switching of the damper 70, the cleaning cassette plate 65 is inserted into the predetermined position after the use cassette plate 27 has been pulled out by the cylinder 64, and the presser unit 15 is moved forward by the cylinder 46. ,
The cleaning cassette plate 65 is pressed against the extruder 2 and set. Thereafter, only the electric motor 5 is driven for a short time to extrude the remaining material in the extruder 2, and the extruded molded product is discharged from the discharge hole 36 to the defective product chute 68. When this is completed, the presser unit 15 is moved backward by the cylinder 46 to release the cleaning cassette plate 65, and then the cylinder 64 pulls out the cassette plate 65 to its original position. During this pulling out, the cleaning cassette plate 650 cutter knife 65b cuts the material caught in the end surface of the opening 8 of the extruder 2.

Next, the clamp member 98 is lowered by the cylinder θ5 to a predetermined position after the cleaning cassette plate 65 has been pulled out, and a new clamped cassette plate 27a is inserted and arranged. The presser unit h15 is moved forward and a new cassette plate 27 is pressed against the extruder 2 and set. As a result, a new cassette plate 27m is set in the predetermined position of the extruder 20, so the electric motor 5 is driven, and the rotation speed is increased to the set value by the rotation speed v4 adjustment member 6, and the conveyor 3
Resuming the input of materials. At this time, the damper 7
0 is switched to the non-defective chute 67.

Next, the clamp member 98 is raised by the cylinder 95, and the transport cart 92 is further moved forward, and the clamp member 97, which has clamped the used cassette plate 27, is stopped above the holding portion 74 of the cleaning box 75. Thereafter, the clamp member 97 is lowered by the cylinder 94, the cassette plate 27 to be used is inserted into the holding part 74, and then the clamp is released. After the clamp member 97 is raised by the cylinder 94, the upper opening of the holding part 74 is closed by the door 85 from the cylinder 87.
2 is injected from a nozzle 77 rotated by an electric motor 80 to wash the dice 33 of the cassette plate 27 for a predetermined period of time. After cleaning is finished,
The pump 82 is stopped, and the upper opening of the holding part 74, which is closed by the door 85, is opened by the cylinder 87.

On the other hand, until the cleaning is completed, the carriage 92 is moved forward and the clamp member 98 is stopped above the holding part 74 as shown in FIG.

Next, the clamp member 98 is lowered by the cylinder 95, and the cleaned used cassette plate 27 is clamped by inserting the clamp claw 98' into the hole 31 of the clamp part 32. Then, after lifting the clamp member 98 from the cylinder 954 and lifting the used cassette plate 27, the transport cart 92 is moved back from the electric motor 93j.
The clamp member 97 is stopped at a predetermined position above the extruder 20, at the standby position shown in FIG.

As described above, the used cassette plate 27 with the clogged dice 3B is replaced with a new cassette plate 27m, and the used cassette plate 27 is further washed separately so that it can be reused, and the die replacement is automatically performed. This is done in a specific manner.

The operation control described above is performed by a control circuit using known electrical components.

In the above embodiment, the detector 4 disposed in the presser unit 15 serves as a member for detecting the material extrusion pressure of the extruder.
0 and the detector 7 disposed on the electric motor 5, but it goes without saying that either one of these may be disposed, and the location thereof can be arbitrarily designed. Further, although the die 33 is shown as being disposed on a cassette plate, the structure is not limited to this, and the die itself may be the size of the cassette plate.
In addition, drive members etc. are not limited to those shown in the examples.
It goes without saying that the design can be made with any suitable design without changing the gist.

(6) Effects of the Invention As described above, when the detection member detects that the extrusion pressure of the material in the extruder reaches a predetermined value, the first At the same time as stopping the driving member, the first clamping member is lowered by the fourth driving member to clamp the used die set at a predetermined position, and then the pressing member is moved back by the second driving member to clamp the used die. After releasing the pressing force of After the clamp member is stopped at a predetermined position above, the second clamp member is lowered by the fifth drive member, a new die is inserted into the predetermined position, and then the pressing member is moved forward by the second drive member. By pressing the new die into the extruder and setting it in the specified position, you can quickly replace the used die with the new die.
Moreover, automatic replacement can be performed reliably, completely eliminating the complexity of the conventional manual replacement work.

In addition, since the replacement time is significantly shortened, there is less downtime and operational efficiency can be increased.In addition, since replacement is automatic, it is possible to reduce the number of workers required. It is. Moreover, when a cleaning die is used, the remaining material inside the extruder is extruded and cleaned before operation with a new die, which prevents material from getting caught in the predetermined position where the die is set. In addition, if a cleaning device is installed, the used dice can be removed, cleaned and reused.
This has the effect of automatically exchanging the dice in conjunction with cleaning.

[Brief explanation of drawings]

Fig. 1 is a schematic front view showing an embodiment of the present invention, Fig. 2 is an enlarged longitudinal sectional front view of the same essential parts, Fig. 3 is a partially cutaway perspective view of the above operation information, and Fig. 7 is an operational view. It is a schematic front view for explaining.

Claims (1)

[Claims] 1. The die is arranged so as to be reciprocally movable toward the material discharge side opening of the extruder driven by the first driving member, and the die is pressed against the extruder and set in a predetermined position covering the opening. a pressing member; a second driving member that reciprocates the pressing member; a moving member disposed above the extruder so as to be movable in the lateral direction; a third driving member that moves the moving member; first and second clamp members that are movable up and down on the member and clamp the die; fourth and fifth drive members that independently raise and lower the first and second clamp members; and A control member comprising a detection member that detects extrusion pressure and a control member that controls each of the above-mentioned members, and receives a detection signal when the detection member detects that the extrusion pressure of the material in the extruder has reached a predetermined value. The first
While stopping the driving member, the fourth driving member causes the first
The clamping member is lowered to clamp the used die set at a predetermined position, and then the pressing member is moved back by the second driving member to release the pressing of the used die, and then the fourth
The first clamping member is raised by the driving member to pull out the used die, and then the moving member is moved by the third driving member to stop the second clamping member, which has clamped the new die, at a predetermined position above. The fifth driving member drives the second
The clamping member is lowered to insert and arrange a new die at a predetermined position, and then the pressing member is moved forward by the second driving member to press the new die against the extruder and set it at the predetermined position. How to automatically exchange dice. 2. A pressing member that is arranged to be able to reciprocate toward the material discharge side opening of the extruder driven by the first driving member and that presses the die against the extruder and sets it in a predetermined position covering the opening; a second drive member that reciprocates the member; a third drive member that inserts and removes the cleaning die into the predetermined position;
A moving member disposed above the extruder so as to be movable laterally; a fourth driving member that moves the moving member; and first and second driving members that are movable up and down on the moving member and that clamp the die. A clamp member, fifth and sixth drive members that independently raise and lower the first and second clamp members, a detection member that detects the extrusion pressure of the material in the extruder, and a control member that controls each of the members. When the detection member detects that the extrusion pressure of the material in the extruder has reached a predetermined value, the control member that receives this detection signal stops the first drive member and stops the fifth drive member. lowers the first clamp member to clamp the used die set at a predetermined position, then moves the pressing member back by the second driving member to release the pressing of the used die, and then the fourth driving member to raise the first clamp member and pull out the used die, then move the moving member by the fourth drive member, stop the second clamp member that clamped the new die at a predetermined position above, and then The cleaning die is inserted into a predetermined position by the drive member, and then the pressing member is moved forward by the second drive member to press the cleaning die against the extruder and set in the predetermined position. The material in the extruder is extruded, and then the extrusion member is moved back by the second drive member to release the cleaning die, and then the cleaning die is pulled out by the third drive member, and then the extrusion member is moved back by the second drive member. The second clamp member is lowered to insert a new die into a predetermined position, and then the second drive member moves the pressing member forward to press the new die against the extruder and set it in a predetermined position. Features an automatic die exchange method. 3. A pressing member that is arranged to be reciprocally movable toward the material discharge side opening of the extruder driven by the first driving member and that presses the die against the extruder and sets it in a predetermined position covering the opening; a second driving member that reciprocates the member; a die cleaning device installed at a predetermined distance from the extruder; and a moving member disposed above between the cleaning device and the extruder so as to be able to reciprocate laterally. a third drive member that reciprocates this moving member; and a third drive member that is provided on the moving member so as to be movable up and down;
First and second clamp members that clamp the die, and a fourth clamp member that independently raises and lowers the first and second clamp members.
, comprising a fifth drive member, a detection member that detects the extrusion pressure of the material in the extruder, and a control member that controls each of the members, and detects when the extrusion output of the material in the extruder reaches a predetermined value. When the member is detected, the first drive member is stopped by the control of the control member that receives this detection signal, and
The first clamp member is lowered by the fourth drive member to clamp the used die set in a predetermined position, and then the second
After the pressing member is moved back by the driving member to release the pressed die, the first clamp member is raised by the fourth driving member and the die to be used is pulled out, and then the moving member is moved back and forth by the third driving member. After moving the second clamp member that clamped the new die to a predetermined position and stopping it above,
The second clamp member is lowered by the fifth drive member to insert and arrange a new die at a predetermined position, and then the pressing member is moved forward by the second drive member to press the new die against the extruder and place it in a predetermined position. Then, the second clamp member is raised by the fifth drive member, and the moving member is further moved forward by the third drive member to stop the first clamp member, which has clamped the dice to be used, above the cleaning device. After that, the first clamp member is lowered by the fourth drive member, the dice to be used are placed in the cleaning device, the clamp is released, and the dice are cleaned, and the first clamp member is raised by the fourth drive member, and The movable member is moved back by the third drive member to stop the second clamp member above the cleaning device, and then the second clamp member is lowered by the fifth drive member to clamp the cleaned used dice, and the second clamp member is raised by the fifth drive member to lift up the used dice, and then the moving member is further moved back by the third drive member to stop the first clamp member above the predetermined position. Features an automatic die exchange method.