JPH043684Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an extruder-directly connected capillary winding device in which an extruder and an alignment winding device are directly connected in a capillary manufacturing device by extrusion.

[Prior Art] Conventionally, thin tubes have been manufactured using an extruder, and the thin tubes as a product are wound onto a spool by a winding device directly connected to the extruder.

However, no device has been known that employs an aligned winding device as the winding device.

[Problems to be solved by the invention] It is not technically impossible to directly connect the alignment winding device and the thin tube extrusion device. However, for example, if the extrusion device is equipped with a press extrusion speed control device,
LWC M/C (Level Winding Coil) is installed in the winding device.
If a machine were to be adopted, the equipment costs would be enormous, and it could not be adopted easily.

[Means for Solving the Problems] This invention enables aligned winding relatively easily by providing a loop to absorb relative fluctuations in winding speed and extrusion speed. That is, the configuration is such that the guide device is provided so that the extruded tube can be turned into a U-shape within the same horizontal plane in the extrusion direction of the press, and the guide device is installed so that the extrusion tube can be turned in a U-shape in the same horizontal plane, and when the extrusion tube is turned in a U-shape, it is parallel to the extrusion direction. This is a capillary winding device directly connected to an extruder, which includes an extrusion tube support device movably connected to a guide device, and an alignment winding device having a traverse mechanism provided on the extrusion tube outlet side of the guide device.

To explain in detail with reference to the drawings, Fig. 1 is an overview of the entire device of this invention, and Fig. 2 shows the relationship between the stroke and pressing force of the extrusion device, the ram speed, and the winding speed of the winding device. This is a graph showing qualitatively.

In the case of the direct extrusion method, the pressing force corresponding to the change in the stroke of the extrusion device changes as shown by the solid line A in Figure 2, and the extrusion speed of the ram in that case changes as shown by the dotted line B. . In other words, the extrusion pressure of the ram decreases with the stroke, and as a result, if the extrusion speed setting volume is fixed, the volumetric efficiency of the main pump improves and the extrusion speed gradually increases as shown by dotted line B. . On the other hand, on the winding device side, the spool becomes thicker as the winding progresses, and if the rotational speed of the spool is kept constant, the winding speed will gradually increase as shown by the dashed line C. Changes in extrusion speed and winding speed tend to be roughly the same. Focusing on these phenomena, as shown in Figure 1, by providing a loop product receiver 7 between the extruder 1 and the winding device 11, it became possible to directly connect the alignment winding device to the extruder. This is a device that has

FIG. 1 shows a capillary manufacturing apparatus of this invention which also serves as an apparatus for manufacturing extruded sections. That is, the product (tube) extruded from the die 2 by the extruder 1
6 is fed to a winding device 11 by a pinch roll 5 via a water cooling device 3 and a runout table 4. This device is characterized in that a guide device for turning the thin tube 6 into a U-shape is provided in front of the winding device 11, that is, a U-shaped guide path 16 and a guide wall 17 continuing therefrom.

Synchronized winding method The guide wall 17 is a device that turns the thin tube 6 fed from the pinch roll 5 through the U-shaped guide path 16 into a U-shape with an appropriate radius of curvature R. The thin tube 6 has the shortest distance on the loop product receiver 7,
In other words, there is a difference of twice the distance L (2L) in FIG. 1 between reaching the winding device 11 via the innermost route and the longest distance, that is, reaching the winding device 11 via the outermost route. There is a capacity for a capillary tube of that length to be stored or discharged in the loop product receiver 7. Specifically, for product speed, maximum 150m/min, L=2m,
R=1.35m is appropriate. A deceleration sensor 8 is provided on the shortest path of the thin tube in the loop product receiver 7, and a speed increase sensor 9 is provided on the longest path. When the deceleration sensor 8 senses that the thin tube 6 takes the shortest path, the winding speed of the winding device 11 is reduced, and when the thin tube 6 is sensed by the speed increasing sensor 9, the winding speed of the winding device 11 is reduced. raise.

As the winding speed tuning means, the motor on the winding side was controlled by an inverter based on the signals from the above-mentioned sensors to control the rotation speed. For the extruder, the extrusion speed was increased to a certain speed and then kept constant, allowing for the phenomenon that the extrusion speed increased due to a necessary drop in pressurizing force. Therefore, if the increase in the extrusion speed due to the reduction in the required pressure and the increase in the winding speed due to the thickening of the spool on the winding side are of the same extent, no adjustment operation is necessary. It is not a good idea to adjust the speed on the extruder side because the extrusion ratio is large and even a small adjustment will cause a large change in the product speed.

The winding device is equipped with a traverse device 10 that moves the material diameter + α per rotation of its spool (main shaft), and can be a device conventionally used for winding electric wires, vinyl hoses, etc.

Conventional technology uses DC control to control tension.
It also had a function to compensate for the thickening of the spool. However, since this invention is equipped with the above-mentioned loop product receiver 7, it is a simple device that uses a normal AC motor to drive the winding device and is equipped with an inverter 12 for winding control to control the rotation speed. The purpose can be fully achieved.

Tension roll 15 is also used for alignment winding.
A roll with a weight such as the one shown in FIG. Specifically, in the case of 8φ x 0.7t, the appropriate weight was 3Kg.

Since the apparatus shown in FIG. 1 is equipped with an operation panel 13, the operator can adjust the rotational speed of the winding device 11 by observing the condition of the thin tube 6 running inside the loop product receiver 7. Aligned winding is possible.
Of course, as explained above, if the number of rotations of the winding device is controlled by the signals from the deceleration sensor 8 and the speed increase sensor 9, there is no need for an operator at the operation panel 13.

The equipment shown in Figure 1 also serves as a shape manufacturing equipment, so it is equipped with a water cooling device 3, a runout table 4, and a pinch roll 5, but if it is a dedicated machine for manufacturing thin tubes, it can be used without these equipment. good.

[Effect of the invention] As explained above, this invention is relatively simple.
The extrusion device and the aligning and winding device can be directly connected by low-cost equipment.

[Brief explanation of the drawing]

Figure 1 is an overview of the capillary winding device directly connected to the extruder of this invention, and Figure 2 shows the ram speed at which the product is extruded.
Graph showing the relationship between extrusion pressure and winding speed, Figure 3-a is an explanatory diagram of the tube winding device, Figure 3
Figure 3-b is a sectional view taken along line A--A of Figure 3-a of the same device. 1...Extruder, 2...Dice, 3...Water cooling device, 4...Runout table, 5...Pinch roll (product feeding), 6...Thin tube, 7...Product receiver for loop, 8...Deceleration sensor, 9... sensor for speed increase, 10... traverse device, 11... winding device, 12... inverter for winding control, 13...
...Operation panel, 14... Shipping spool, 15... Tension roll, 16... Taxiway, 17... Guide wall.

Claims (1)

[Scope of utility model registration request] a guide device provided so that the extrusion tube can be turned into a U-shape in the same horizontal plane in the extrusion direction of the press;
An aligned winding having an extruded tube support device connected to a guide device so as to be able to move parallel to the extrusion direction when the extruded tube is turned into a U-shape, and a traverse mechanism provided on the extruded tube outlet side of the guide device. A capillary winding device directly connected to an extruder equipped with a winding device.