JPH0630404Y2 - Cutter device for extruder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention This invention provides a material extruded from a large number of small holes of a die plate attached to an extruder, for example, ceramic powder mixed with a binder in a ceramic powder. The present invention relates to a cutter device for an extruder that cuts into lengths.

2. Related Art and Problem As a cutter device of this type, one shown in FIGS. 4 and 5 is known. In this cutter device, the cutter 2 of the granulator 1 is brought into contact with the surface of the die plate 5 attached to the extruder 3, and then the cutter 2 is rotated by the continuously variable transmission 6, whereby the screw or piston of the extruder 3 is rotated. Then, the material extruded from the small holes 7 of the die plate 5 and discharged is cut by the cutter 2.

By the way, in the case of cutting the material by the cutter device as described above, the granulator 1 is retracted every predetermined time and the cutter 2
Must be separated from the surface of the die plate 5, and the entire apparatus such as the cutter 2 and the die plate 5 must be maintained and inspected. Therefore, it is difficult to perform maintenance and inspection unless a sufficient space is secured behind the granulator 1, which makes the work very inconvenient.

In addition, the granulator 1 is placed at a position facing the surface of the die plate 5.
Since it is installed, it is difficult to see how the material is cut and it is easy to overlook the occurrence of defective products.

The present invention solves the above-mentioned problems of the prior art, and facilitates maintenance and inspection even if there is not enough space behind the granulator, and the quality of the product can be improved by clearly seeing the state of cutting the material. An object of the present invention is to provide a cutter device capable of

Means for Solving the Problems In order to achieve the above object, the present invention installs a first actuating member for moving the cutter up and down on a die plate or an extruder, and brings the cutter into contact with and separates from the surface of the die plate. When the second operating member is installed and the material is cut by the cutter, the cutter comes into contact with the surface of the die plate and slides from the upper side to the lower side. It is characterized in that a control member for controlling the first and second actuating members is installed so as to move from above to above.

By the first and second actuating members controlled by the control member,
The cutter is in contact with the surface of the die plate and is slid from the upper surface to the lower surface of the plate, and cuts the material extruded from the hole during the sliding. After the cutting, the cutter is separated from the surface of the die plate, moved from the lower side to the upper side, and returned to the original position before the cutting.

EXAMPLE In the example shown in FIGS. 1 to 3, 13 is an extruder, 15 is a die plate attached to the extruder 13, and 17 is a die plate.
A large number of small holes for material discharge are formed in the hole 15, and a sliding recess 18 on which a cutter described later slides is formed on the surface of the die plate 15 having these small holes 17.

A cylinder support 21 is installed on the upper part of the die plate 15, and the cylinder 22 can be oscillated in the left-right direction in FIG. Installed on. A bracket 25 is screwed to the rod end of the cylinder 22.
A cutter 26 for cutting material is attached to the. As is clear from FIG. 2, the cutter 26 has a rectangular plate shape having a lateral width slightly shorter than the lateral dimension of the sliding recess 18, and the reciprocating motion of the rod of the cylinder 22 gives the vertical motion to the cutter 26. The blade edge comes into contact with the surface of the sliding recess 18 and slides to cut the material extruded from the small hole 17 of the die plate 15. Therefore, it is necessary to ensure that the cutting edge of the cutter 26 comes into contact with the sliding recess 18 and does not rotate, but the rod shape of the cylinder 22 is square as the rotation preventing means.

A cylinder 28 is horizontally installed on the upper surface of the support base 21 via a bracket 30 and a pin 31, and a clevis 32 for holding the cylinder 22 is attached to the tip of the rod of the cylinder 28. With this clevis 32, both cylinders 22,
28 is connected, and the cylinder 28 is reciprocally moved by the rod.
22 is given a left and right swing around the pin 24, and the cutter 26
The blade edge of can be brought into contact with and separated from the surface of the die plate 15.

Both cylinders 22 and 28 are operated by a known fluid control device including limit switches 34 and 35, a timer, and solenoid valves SV-1 and SV-2, and the cutting edge of the cutter 26 is the point shown in FIG. Both cylinders 22 and 28 are automatically controlled so that the locus of a → b → c → d → a is continuously drawn.

A collection box 36 receives and collects the cut material.

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

When only the cylinder 28 is actuated and the rod extends, the cutting edge of the cutter 26 comes into contact with the surface of the sliding recess 18 formed in the die plate 15 at the point a, which is the standby position for the material cutting process. Become.

The time when the cutter 26 is operated next from the standby position is set by a timer (not shown). This is provided to allow the cut length of the material to be arbitrary.

When the time set by the timer has elapsed, the cylinder 22 is activated and the rod extends. This causes the cutter 26 to start descending and slide down until the limit switch 35 attached to the lower portion of the cylinder 22 operates, during which the material extruded from the small hole 17 of the die plate 15 is cut to a predetermined length. . The point where it has completely descended is point b, and the sliding lowering of the cutter 26 from point a to point b is the material cutting step.

Next, when the cylinder 22 is deactivated and the rod of the cylinder 28 is contracted, the cylinder 22 is swung as indicated by the one-dot chain line in FIG. 1, whereby the cutting edge of the cutter 26 is brought from the point b to the point c. Be done. After this, a timer (not shown) other than the timer causes the cylinder 28 to become inoperable when the set time of the timer elapses, and the rod of the cylinder 22 shrinks. The cutting edge of is brought from point c to point d. Then, after that, when the cylinder 28 is operated and the rod is extended, the blade edge of the cutter 26 is brought from the point d to the original standby position point a.

When the cutting edge of the cutter 26 is brought to the point d, the limit switch 34 is activated, and the extension of the cylinder 28 detects that the cutter 26 is in the standby position.

The above is one cycle of material cutting by the cutter 26,
At the same time when the switch provided in the control device is turned on, the cycle operation is automatically and continuously repeated. In this cycle, the operation of the cutter 26 is started before the material is extruded by the extruder 13 from the many small holes 17 of the die plate 15, and the operation is stopped after it is confirmed that the material has been extruded.

In the above embodiment, the cylinder 22 as an actuating member for moving the cutter 26 up and down and the cylinder 28 as an actuating member for bringing the cutter 26 into and out of contact with the surface of the die plate 15 are not shown as an example. It goes without saying that other members may be used instead. Further, the cylinder may be either pneumatic or hydraulic, and the present invention can be modified in various ways within the scope of the invention.

Effect of the Invention This device is configured as described above, and it is possible to eliminate obstacles such as the conventional granulator on the surface side of the die plate, so that the appearance of the material can be seen clearly and the quality of the product can be improved. Can be planned. Further, unlike the conventional one, a mechanism for retracting the granulator and a space are not required, which facilitates the maintenance and inspection of the entire apparatus and also shortens the cutting work time, thereby improving the work efficiency. There is an excellent effect.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of the present invention, FIG. 2 is a left side view of the same as above, FIG. 3 is a pneumatic circuit diagram, and FIG. 4 is a vertical sectional front view showing a conventional example. FIG. 4 is a vertical side view of the above. 13 ... Extruder, 15 ... Die plate, 17 ... Small hole, 18 ...
… Sliding recess, 21 …… Cylinder support, 22 …… Cylinder,
26 …… Cutter, 28 …… Cylinder

Claims (1)

[Scope of utility model registration request] 1. A cutter device for an extruder, wherein a cutter for cutting a material extruded from a large number of small holes of a die plate attached to the extruder is slidably arranged on the surface of the die plate. A first operating member for moving the cutter up and down is installed on the plate or the upper part of the extruder, and a second operating member for moving the cutter to and from the surface of the die plate is installed
When the material is cut by the cutter, the cutter contacts the surface of the die plate and slides from the upper side to the lower side, and the cutter moves away from the surface of the die plate and moves from the lower side to the upper side after cutting the material. A cutter device for an extruder, wherein a control member for controlling the second operation member is installed.