JPH06297541A - Cylinder device for extruder - Google Patents

Abstract

PURPOSE:To clean sufficiently a molten resin passage in a cylinder of an extruder, reduce the cleaning labor and shorten the time of cleaning work thereof. CONSTITUTION:Respective two adjoining end flange section of a plurality of barrels 2 constituting a cylinder device 1 are clamped simultaneously by respective both side sections, and respective barrels 2 are connected one another by clamping devices 11 releasable easily, and respective barrels 2 are supported rockably on guide rails 6 disposed along the longitudinal axial line by using rods so that respective barrels can be moved from the central axial line of the cylinder device 1 in the lateral direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder device for an extruder, and more particularly to a cylinder device which is constructed by arranging a plurality of barrels on one axis and connecting and fixing them to each other.

[0002]

2. Description of the Related Art Conventionally, as a cylinder device in an extruder for melting and kneading a resin, a plurality of barrels (one block obtained by dividing a cylinder into a plurality of parts in the axial direction) are arranged on one axis and end portions of these barrels are connected to each other. It is known that the components are connected and fixed to each other with bolts or the like. It is also known that the cylinder device includes a uniaxial type in which one screw is arranged inside the cylinder and a biaxial type in which two screws are arranged inside the cylinder.

By the way, the inside of the cylinder device in this type of extruder is required to be regularly cleaned. This is necessary to remove the resin solidified by adhering to the molten resin passage inside the cylinder device and stabilize the feeding of the molten resin by the screw, and it is possible to clean the resin once or twice a day. is there. In particular, when kneading molten resin of different colors, the previous molten resin remaining in the molten resin passage in the cylinder device may be mixed, which may deteriorate product quality.Therefore, clean the molten resin passage in the cylinder device. Will always be implemented.

[0004]

However, in the conventional cylinder device, the barrels constituting the cylinder device are connected to each other by a plurality of bolts as described above, and releasing the connection is a difficult work. . Therefore, without disconnecting each barrel just to clean the molten resin passage in the cylinder device, remove the die at the tip of the cylinder device as it is, and attach the brush rotatably to the tip of the long wire. Was inserted and the brush was rotated to clean the molten resin passage of the cylinder device.

However, since the cylinder device is relatively long, it is difficult for a worker to see the inside of the cylinder device, so that it is difficult to sufficiently clean the cylinder device, and such a cleaning tool is used. This type of cleaning itself is a very laborious and time-consuming task.

An object of the present invention is to solve the above-mentioned conventional problems, and it is possible to perform sufficient cleaning, and to reduce the labor and time required for the cleaning work. To provide a cylinder device for a machine.

[0007]

A cylinder device for an extruder according to the present invention is, firstly, a cylinder device for an extruder formed by connecting a plurality of barrels in an axial direction, the cylinder device being arranged along the cylinder device. Guide rail, a plurality of carriages movably mounted on the guide rail, and one end pivotally attached to the carriage, the other end is connected to the barrel portion of the barrel,
The barrel support device includes a rod that supports the barrel so that the barrel can swing to the left or right or both with respect to the axis of the cylinder device, and a clamp device that connects the ends of the barrels to each other. Is provided with two clamp arms, one end of which is pivotally attached to the carriage, and a tightening means for attracting the other ends of the clamp arms to each other. A fitting groove that simultaneously surrounds two adjacent flange portions that are respectively formed on the inner side surface, and the tightening means attracts the other ends of the clamp arms to each other so that the adjacent flanges The barrels are connected to each other by fitting the portion relatively to the fitting groove.

The cylinder device of the extruder of the present invention is the second device.
In a cylinder device of an extruder in which a plurality of barrels are connected in the axial direction, a guide rail arranged along the cylinder device, a plurality of carriages movably mounted on the guide rails, and each of the carriages. A horizontal rotation device, a barrel support device including a plurality of rods, one end of which is connected to the carriage through the horizontal rotation device and the other end of which is connected to a barrel portion of each barrel; And a clamp device for connecting the ends of the clamp device to each other, and the clamp device includes two clamp arms, one end of which is pivotally attached to the carriage, and a fastening means for attracting the other ends of the clamp arms to each other. , A fitting that simultaneously encloses two adjacent flange portions that are respectively formed on the outer peripheries of the end portions where the barrel arms contact each other, as one unit A groove is formed on the inner side surface, and the tightening means draws the other ends of the clamp arms to each other so that the adjacent flange portions are relatively fitted into the fitting groove to connect the barrels to each other. Is characterized by.

[0009]

According to the cylinder device of the extruder of the present invention, when cleaning the molten resin passage of the cylinder device, the clamp device connecting each barrel is released.
In this procedure, the tightening means that pulls the other ends of the arms of the clamp device that connects one end of one barrel and the end of the adjacent barrel to each other is released. Next, each arm is rotated at its one end pivotal portion to open and expand, and two adjacent flange portions at both barrel end portions are relatively separated from the fitting groove of each arm.

On the other end side of the barrel, the clamp device is removed in the same manner. In this way, the specific barrel is disconnected from the group of barrels arranged on one axis and connected to each other, and the disconnected barrel is supported by the carriage constituting the barrel supporting device. Therefore, it remains in that position. Therefore, either or both of the front and rear barrel groups carried by the swingable rod on the movable carriage of the barrel support device are slightly moved to separate them axially from the disconnected barrel, and then,
Tilt the swingable rod and remove this barrel from the center axis of the cylinder device.

As a result, both ends of the barrel are exposed, and the inside of the barrel is cleaned at this stage.
In this way, the other barrels are cleaned one after another, and when all the barrels have been cleaned or have been cleaned, they are reconnected in the reverse order of the disconnection procedure described above, and the cylinder device is reconnected. Assemble.

Further, in the cylinder device of the extruder according to the present invention, in which the barrel support rod is provided on the carriage through the horizontal rotation device, the rotation rod is rotated to move the barrel to a predetermined axis with respect to the axis line of the cylinder device. By changing its direction by the angle of, the both ends of the barrel are exposed as well, which allows the molten resin passage inside to be easily cleaned.

[0013]

The cylinder device of the extruder according to the present invention will be described in more detail below with reference to the embodiments shown in the drawings. Figure 1
Also, FIG. 2 shows an embodiment of the cylinder device of the extruder according to the present invention. The cylinder device 1 of the present embodiment is basically configured by arranging a plurality of barrels 2 on the same axis and connecting them to each other. Inside each barrel 2, a biaxial molten resin passage 3 (FIG. 3) is formed so as to penetrate therethrough. Each barrel 2 has a flange 4 formed on the outer circumference of both ends thereof, and a side surface of the flange 4 on the barrel body 5 side is a tapered surface 4a.

Further, the outer surface of the flange portion 4 in the axial direction of the barrel 2 is naturally formed flat because it is brought into close contact with the outer surface of the flange portion 3 when the barrel 2 is connected to another adjacent barrel 2. The cylinder device 1 includes a guide rail 6 arranged at a lower portion of the cylinder device 1 along an axis along which a plurality of barrels 2 are connected and arranged. A plurality of carriages 7 are movably mounted on the guide rails 6.

A U-shaped bracket 10 is mounted on the upper part of each carriage 7 for pivotally supporting it by a pivot parallel to the axis of the cylinder device 1. This bracket 10 has
A lower end of a rod 8 having an upper end fixed to the body portion 5 of the barrel 2 is pivotally attached by a pivot 9. As a result, the rod 8 swings in the upper part of the carriage 7 about the pivot 9 to the left or right with respect to the longitudinal axis of the cylinder device 1 or both. Therefore, the barrel 2 fixed to the upper end of the rod 8
Can be moved laterally with respect to the axis of the cylinder device 1. The barrel 2 is thus dolly 7 and rod 8
These components constitute the barrel support device as they are supported by the like.

Cylinder device 1 by connecting a plurality of barrels 2
When configuring the above, the adjacent barrels 2 are connected by the clamp device 11 so that the two abutting flange portions 4 are integrated. Details of the clamp device 11 are shown in FIG. With reference to FIG. 3, the clamp device 11 includes a pair of clamp arms 12 and 13 so as to sandwich the barrel 2 from both sides.
Lower ends 12a and 13a of 13 are pivotally attached by pins 16 to a mounting plate 15 provided on a support member 14 fixed to the upper portion of the carriage 7 (FIG. 2).

As shown in FIG. 4, the pair of clamp arms 12 and 13 come into contact with the adjacent barrels 2 (actually, as shown in FIG. 4, a spacer 17 is interposed between the barrel ends. A fitting groove 18 that integrally surrounds two adjacent flange portions 4 that are respectively formed on the outer circumferences of the respective (abutting) ends is formed on the inner side surface.

Both side surfaces 18a, 18b of the fitting groove 15
Is an inclined surface having the same inclination angle as the tapered side surface 4a of the flange portion 4. Therefore, when the adjacent flange portion 4 of the barrel 2 is sandwiched by the clamp arms 12 and 13, the fitting groove is formed in the tapered side surface 4a of the flange portion 4. Both side surfaces 18a, 18 of 18
When b is brought into close contact with the clamp arms 12 and 13 at the same time, both barrels 2 move in the opposite direction from the direction of the force received by the tapered side surface 4 of the flange portion 4, thereby increasing the contact force between the barrels, that is, the close contact degree.

Further, the clamp device 11 is provided with a tightening means 19 for attracting the upper ends 12b and 13b of the clamp arms 12 and 13 to each other as means for tightening the clamp arms 12 and 13. The tightening means 19 has a fastening bolt 2 whose one end is pivotally attached by a pin 20 to the U-shaped portion of the upper end 12 b of the clamp arm 12.
1 is provided.

At the other end of the fastening bolt 21, a screw portion 21 is provided.
a is formed, and the other end is fitted from above into the U-shaped part of the other end 13b of the other clamp arm 13 when tightening the adjacent flange part 4 of the barrel 2 with the pair of clamp arms 12, 13. Then, the nut 23 is attached to the screw portion 21a of the fastening bolt 21 via the washer 22.
The upper ends 12b and 13b of the clamp arms 12 and 13 are attracted to each other by screwing.

When the connection between the adjacent barrels 2 is released, the nut 23 screwed to the fastening bolt 21 is removed and the fastening bolt 21 is rotated upward so that the tip end portion of the clamp arm 13 is removed. Remove from the U-shaped part of the upper end 13b. As a result, both clamp arms 12 and 13 have pin 2
The lower ends 12a and 13a pivotally attached to each other at 0 are rotated outward to open and expand, and the adjacent flange portion 4 is relatively separated from the fitting groove 18 of each arm. As a result, the connection at one end of the adjacent barrels 2 is released.
Thereafter, the other end is similarly clamped by the clamp device 11
, The particular barrel 2 is completely separated from the other adjacent barrels.

Next, the procedure for cleaning the molten resin passage 3 inside the cylinder device 1 of the extruder according to this embodiment will be described. When the molten resin passage 3 of the cylinder device 1 is cleaned, the clamp devices 11 at both ends connecting the barrels 2 are released as described above.

In this way, the specific barrel 2 is disconnected from the barrel group arranged on one axis and connected to each other, but the disconnected barrel 2 is moved by the carriage 7.
It remains in that position as it is supported by. Therefore, either or both of the front and rear barrel groups carried by the swingable rod 8 on the movable carriage 7 of the barrel support device are slightly moved to disconnect the barrel 2
Axially away from. Next, the rod 8 carrying the barrel 2 is swung to incline to the left or right with respect to the center axis of the cylinder device 1, and the barrel 2 is removed from the center axis of the cylinder device 1. .

As a result, both ends of the barrel 2 are exposed, and the inside of the barrel 2 is cleaned at this stage. The other barrel 2 is cleaned in this order.
When all of the barrels 2 have been cleaned, or after cleaning has been completed, the cylinder devices 1 are reassembled by reconnecting in the reverse order of the above-described disconnection procedure.

As described above, according to the cylinder device 1 of the extruder in this embodiment, the plurality of barrels 2 forming the cylinder device 1 can be easily disconnected from each other, and the barrel 2 that has been disconnected is disconnected. Can be moved laterally from the axis of the cylinder device 1 to be positioned on another axis parallel to this, so that both end faces of the barrel 2 are exposed, and as a result, the molten resin passage 3 of the barrel 2 can be easily formed. And it can be cleaned sufficiently.

In the above-described embodiment, the barrel-carrying rod 8 attached to the upper portion of the carriage 7 is the cylinder device 1.
Although it was pivotally attached to the left and right with respect to the axis of, the horizontal rotating device 24 was installed on the upper part of the carriage 7 as shown in FIG. It may be attached so that the rod 8 rotates about its own axis.

According to such a cylinder device, when cleaning a specific barrel 2 as shown in FIGS. 6 and 7, the connection of both ends is released and the front and rear barrel groups are moved slightly as described above. When the rod 8 is rotated after being separated from the center, the barrel 2 changes its direction horizontally by a predetermined angle with respect to the central axis of the cylinder device 1, whereby the barrel 2 is changed in the same manner as in the above-described embodiment. Both ends of 2 are exposed, and as a result, the molten resin passage 3 can be easily and sufficiently cleaned.

[0028]

As described above, according to the cylinder device of the extruder of the present invention, a plurality of barrels which are connected to each other to form the cylinder device are supported by the carriage movably arranged on the guide rails. A clamp device is constructed so that it can be moved laterally from the longitudinal center axis of the cylinder device or can be turned around, and in addition, the barrel devices can be decoupled from each other very easily. Therefore, it is possible to easily disconnect the individual barrels and clean the molten resin passage inside each barrel.
As a result, the molten resin passage in the cylinder device can be sufficiently cleaned, and the cleaning can be performed very efficiently without the labor and time.

[Brief description of drawings]

FIG. 1 is a side view schematically showing a cylinder device of an extruder according to an embodiment of the present invention.

FIG. 2 is a partial side view showing, on an enlarged scale, a device for supporting and clamping one barrel constituting the cylinder device of the extruder according to the embodiment of the present invention.

FIG. 3 is a front view showing a clamp device for connecting barrels constituting the cylinder device shown in FIG. 1.

FIG. 4 is a cross-sectional view of a clamp arm shown by cutting the clamp device shown in FIG. 3 along the line AA.

FIG. 5 is a structural explanatory view schematically showing a cylinder device of an extruder according to another embodiment of the present invention.

6 is an operation explanatory view showing a state in which one barrel is uncoupled and its direction is changed in the cylinder device shown in FIG.

FIG. 7 is a plan view of the cylinder device shown in FIG. 6 as seen from above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylinder device of extruder 2 Barrel 3 Molten resin passage 4 Flange part 4a Tapered side surface 5 Barrel body part 6 Guide rail 7 Carriage 8 Rod 11 Clamp device 12 Clamp arm 13 Clamp arm 18 Fitting groove 19 Clamping means 24 Horizontal rotation device

Claims (2)

[Claims] 1. A cylinder device for an extruder, which comprises a plurality of barrels connected in the axial direction, a guide rail arranged along the cylinder device, a plurality of carriages movably mounted on the guide rail,
And a barrel support including a rod pivotably attached to the carriage at one end and the other end connected to a barrel portion of the barrel and swingably supporting the barrel to the left or right or both with respect to the axis of the cylinder device. The apparatus includes a device and a clamp device that connects the ends of the barrels to each other. The clamp device includes two clamp arms, one end of which is pivotally attached to the carriage, and the other ends of the clamp arms. And a tightening means for attracting each of the clamp arms, wherein each of the clamp arms forms a fitting groove that integrally surrounds two adjacent flange portions respectively formed on the outer circumferences of the end portions abutting each other on the inner surface, The tightening means draws the other ends of the clamp arms to each other and relatively fits the adjacent flange portions into the fitting groove to connect the barrels. Cylinder device of the extruder, characterized in Rukoto. 2. A cylinder device of an extruder, wherein a plurality of barrels are connected in the axial direction, a guide rail arranged along the cylinder device, a plurality of carriages movably mounted on the guide rail,
A horizontal rotation device provided on each of said carts; and a barrel support device comprising a plurality of rotary rods, one end of which is connected to said carts through said horizontal rotation device, and the other end of which is connected to the barrel portion of each barrel. , A clamp device for connecting the ends of the barrels to each other, and the clamp device has two clamp arms pivotally attached to the base at one end, and a clamp for attracting the other ends of the clamp arms to each other. Each of the clamp arms forms a fitting groove on the inner side surface that integrally surrounds two adjacent flange portions respectively formed on the outer circumferences of the ends where the barrels contact each other, and the tightening is performed. Means pulls the other ends of the clamp arms toward each other to relatively fit the adjacent flange portions into the fitting groove to connect the barrels. Cylinder device of the extruder, wherein the door.