JP2005351395A - Oil supply system in sheet-like material drawing machine - Google Patents

Abstract

【Task】
It is an object of the present invention to provide an oil supply system in a sheet-like material drawing machine in which a blockage in the middle of an oil supply pipe and a blockage of a discharge outlet of a branch pipe do not occur.
[Solution]
An oil supply system that supplies lubricating oil to a traveling path in a sheet-shaped material stretching machine that extends a sheet-like material, and is supplied from a plurality of oil pots 34 provided at a plurality of locations in the traveling path, and an oil supply device main body 30. A distributor 32 that distributes the lubricated oil to the branch pipes 33 and supplies the oil pots to the oil pots, and an optional pressure when the lubricant is distributed to the branch pipes and supplied to the oil pots. Gas inflow means 37 for flowing the gas into the branch pipes or the oil pots.
[Selection] Figure 3

Description

  The present invention relates to an oil supply system in a sheet-like material drawing machine for drawing a sheet-like material such as a thermoplastic resin film.

  A conventional simultaneous biaxial stretching machine is known, for example, in Japanese Patent Application Laid-Open No. 2000-334832.

  However, there has been no patent proposed for oil supply means for the sliding running part of the endless link device of the simultaneous biaxial stretching machine.

JP 2000-334832 A

  As an example of the prior art, a main pipe is arranged from an oil supply apparatus installed outside the heating apparatus, and a branch pipe is branched from the main pipe to connect a pipe to an oil supply point of a simultaneous biaxial stretching machine in the heating apparatus. The oil supply device is intermittently operated so that an arbitrary discharge amount of lubricating oil is discharged from an end of the branch pipe at an arbitrary time interval. In the above, since the discharge amount per one time is very small, it takes a long time for the lubricating oil injected from the oil supply device to be discharged from the end of the branch pipe. There was a problem that it was carbonized and solidified in the inside and closed, and it could not function as an oil supply pipe.

  In addition, there is a problem that wear powder of the sliding bearing, monomer or the like coming from the product enters from the discharge port at the end of the branch pipe, accumulates and clogs, and similarly does not function as an oil supply pipe.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an oil supply system in a sheet-like material drawing machine in which the obstruction in the middle of the oil supply pipe and the obstruction of the outlet of the branch pipe do not occur.

  In order to achieve the above object, the present invention provides an oil supply system that supplies lubricating oil to a traveling path in a sheet-like material stretching machine that stretches a sheet-like material, and a plurality of oil supply systems provided at a plurality of locations in the traveling path. An oil pot, a distributor that distributes the lubricating oil supplied from the main body of the oil supply device to the branch pipes and supplies the branch oil to the oil pots, and distributes the lubricating oil to the branch pipes by the distributor. Gas supply means for flowing a gas of an arbitrary pressure into the branch pipes or the oil pots when the gas is supplied to the lubricating oil from the oil pots. Is configured to be supplied to the travel path.

Moreover, the present invention is characterized in that the distributor is configured to intermittently supply oil to the oil pots.
The present invention is characterized in that the gas inflow means is connected to the branch pipes.
The present invention is characterized in that the gas inflow means is connected to the oil pots.
Further, according to the present invention, the sheet-shaped material stretching machine travels along the traveling path through an endless link device in which a plurality of gripping devices that grip both side ends of the sheet-shaped material are arranged on both side ends of the sheet-shaped material. It is characterized by being configured.

  According to the present invention, the reliability of the oil supply system can be improved by eliminating the cause of the function of the oil supply pipe being cut off due to the blockage inside the oil supply pipe in the heating device or the discharge port at the end of the oil supply pipe during operation. As a result, it is possible to extend the life of the stretching machine and reduce maintenance costs (including running costs).

  Hereinafter, embodiments of a simultaneous biaxial stretching machine for sheet-like materials according to the present invention will be described with reference to the drawings.

  First, the basic structure of the simultaneous biaxial stretching machine for sheet-like materials according to the present invention will be described with reference to FIGS. In the simultaneous biaxial stretching machine for sheet-like material according to the present invention, a plurality of gripping devices (clips) 2 for grasping both side ends of the sheet-like material 1 such as thermoplastic resin are arranged on both side ends of the sheet-like material 1. An endless link device 3 (a part of the link and one endless link in the drawing is omitted) is provided, and the endless link device 3 is configured by connecting a large number of link devices 10 formed in a fold shape. Further, the endless link device 3 is driven by sheet-side entry sprockets 7 and 8 and guided between the guide rails 6 and 4 and 4 and 5 which are arranged in a divergent shape in the movement direction, so that the gripping pitch is reached. By gradually expanding the sheet-like material 1, the sheet-like material 1 is stretched simultaneously in two vertical and horizontal directions, and then the sheet-like material is removed and driven by the outlet-side sprocket 9 to return to the inlet-side sprockets 7, 8. . The fold-like link device 10 connects the middle point of the long link plate (moving body) 11 and the inner end of the short link plate 12 on the sheet-like object side by the link shaft 13, and the long link The outer end of the plate 11 on the side opposite to the sheet is connected to the outer end of the short link plate 12 on the side opposite to the sheet by a link shaft 14. A grip device (clip) 2 is provided at the inner end of the long link plate (moving body) 11. 2 are provided between adjacent link shafts 14, and the maximum pitch of the link device 10 of the endless link device 3 (the link plate 11 and the link plate 12 centered on the link shaft 13). The maximum opening angle between them is limited.

  The gripping device 2 is opened and closed by an opening / closing guide (opening / closing means) (not shown) provided at the entrance and closed by the force of the spring 20 to grip the end of the sheet-like object 1, and an opening / closing guide provided at the exit ( By opening / closing means (not shown), the sheet-like object 1 is opened and removed.

  As a result, the sheet-like material 1 is heated to a temperature necessary for stretching in the preheating section (A), and both end portions are gripped by the gripping device 2. Thereafter, in the extension section (B) after preheating, the endless link device 3 is guided by the guide rails 4 to 6 arranged in a diverging shape in the traveling direction, the link device 10 opens, and the gripping pitch of the gripping device 2 gradually increases. By doing so, the sheet-like material 1 is simultaneously stretched in two directions. After that, a predetermined heat treatment (heat setting is performed at a predetermined temperature) is performed in the heat treatment section (C), and it is rapidly cooled in the removal section (D) and detached from the endless link device 3.

  As described above, the guide rails 5, 4; 4, 6 arranged so as to spread toward the end in the traveling direction form a pair of guide grooves 16 a, 16 b. In a guide groove 16a formed by the sheet-side guide 5 and the intermediate guide 4 closer to the sheet-like object 1, a link shaft 13 provided at an intermediate point of the long link plate (moving body) 11 is a bearing roller 17a. And is held so as to slide on a bed (base) 19 by a thrust bearing 18a. In the guide groove 16b formed by the other anti-sheet side guide 6 and the intermediate guide 4, the link shaft 14 provided at the outer end of the long link plate (moving body) 11 is guided via the bearing roller 17b. Then, the thrust bearing 18b is held so as to slide on the bed (base) 19.

  Thus, the trajectory of the guide groove 16a that guides the bearing roller 17a determines the trajectory of the link shaft 13 of the link device 10 and determines the amount by which the sheet-like object 1 is stretched in the TD direction. On the other hand, by narrowing the gap of the guide groove 16b that guides the bearing roller 17b with respect to the guide groove 16a, the interval of the link shaft 14 with respect to the link shaft 13 is narrowed to open the link device 10 and the gripping pitch of the gripping device 2 is increased. Thus, the amount of stretching of the sheet-like material 1 in the MD direction is determined. Further, the thrust bearing 18a provided at the lower end of the bearing roller 17a and the thrust bearing 18b provided at the lower end of the bearing roller 17b slide on the bed (base) 19 to support the own weight of the endless link device 3. Become.

  Therefore, the endless link device 3 is driven by the inlet-side sprockets 7 and 8 and the outlet-side sprocket 9 and slides stably over a long period along the traveling path determined by the guide rails 5, 4; In order to (slide), the lubricating oil is not blocked at many points in the guide grooves 16a and 16b formed by the guide rails 5, 4; It is necessary to continue supplying.

  Next, an embodiment of an oil supply system for the traveling path on the bed 19 of the endless link device in the sheet-like material drawing machine as a feature of the present invention will be described. As shown in FIG. 1, lubricating oil is supplied to a main pipe 31 from an oil supply device main body 30 constituted by a gear pump or the like, and a discharge amount per one time, for example, from a piston type distributor 32 provided at a predetermined position of the main pipe 31 And without changing the discharge interval, it is intermittently supplied to the branch pipe 33 at 0.05 to 0.2 cc / time, and is supplied to oil pots 34 a and 34 b provided at a number of positions on the traveling path of the bed 19. The oil is supplied from each oil pot 34a, 34b to the sliding portion (sliding portion) in the guide grooves 16a, 16b on the bed 19 (traveling path). The supply amount of the lubricating oil to the main pipe 31 is controlled based on the pressure of the lubricating oil detected by the pressure sensor provided at the end of the main pipe 31 or the branch pipe 33.

  First, in the oil supply system according to the present invention, the first is to keep supplying the lubricating oil to many locations in the guide grooves 16a and 16b (running paths) without obstructing the lubricating oil (without losing the function as the oil supply device). One embodiment is shown in FIG.

FIG. 3 is a detailed view of the first embodiment in which air pipes are additionally provided in parallel to the branch pipes in the oil supply system according to the present invention. For example, a piston distributor 32 is attached to the branch pipe branch points ₄₀₁ to _n in the main pipe 31, and a certain amount of lubricating oil is intermittently fed into the branch pipe 33. In the first embodiment, a gas pipe (gas inflow means) 37 for air or an inert gas or the like is added to the branch pipe 33 in parallel with the lubricating oil pipe via a T-shaped joint 35. The gas pipe 37 for air or inert gas can be finely adjusted by providing a check valve 36 and a pressure reducing valve 38 so that a predetermined oil supply amount is accurately supplied to the oil supply location.

  As described above, according to the first embodiment, the lubricating oil that flows in the branch pipe 33 at an extremely low speed (0.05 to 0.2 cc / 1 time) and is exposed to a high-temperature atmosphere for a long time, For intermittent oil supply operation, a gas such as air of an arbitrary pressure or an inert gas is forcibly forced from the gas pipe 37 through the T-shaped joint 35 into the oil pot 34 (34a, 34b) having a discharge port. The agitation of the lubricating oil that has been in the high-temperature atmosphere for a long time to suppress the carbonization phenomenon can improve the reliability of the oil supply system without using expensive high-temperature lubricating oil. .

  In particular, even when the sheet-like material 1 is polyimide or the like and is heated to a high temperature of 300 ° C. or higher, it is possible to prevent clogging without using an expensive high-temperature lubricating oil, and the effect becomes remarkable.

  Next, in the oil supply system according to the present invention, the second embodiment for continuing to supply the lubricating oil to many locations in the guide grooves 16a and 16b without closing the lubricating oil (without losing the function as the oil supply device). The form is shown in FIG.

  FIG. 4 is a detailed view of a second embodiment in which an air pipe is directly installed in the oil pot at the end of the branch pipe in the oil supply system according to the present invention. Oil pots 34 (34a, 34b) having discharge ports are attached to the back side of the bed 19 serving as a travel path of the endless link device 3, and the end of the branch pipe 33 is connected thereto. In the second embodiment, a gas pipe (gas inflow means) 37 such as air or inert gas is directly connected to the oil pot 34. The gas pipe 37 can be finely adjusted by providing a check valve 40 and a pressure reducing valve 38 so that a predetermined oil supply amount is accurately supplied to the oil supply location.

  As described above, according to the second embodiment, the lubricating oil that flows in the pipe 33 at a very low speed (0.05 to 0.2 cc / time) and is exposed to a high-temperature atmosphere for a long time is gas. By constantly injecting air such as air or inert gas from the pipe 37 into the oil pot 34 (34a, 34b), wear powder, monomers, etc. are deposited at the discharge port. Therefore, it is possible to improve the reliability of the oil supply system without using expensive high-temperature lubricating oil. Further, the air pressure is set to an optimum pressure by adjusting that a predetermined amount of oil supply is accurately supplied to the lubrication point and that the lubricating oil is ejected from the discharge port and is not scattered.

  In particular, even when the sheet-like material 1 is polyimide or the like and is heated to a high temperature of 300 ° C. or higher, it is possible to prevent clogging without using an expensive high-temperature lubricating oil, and the effect becomes remarkable.

  As described above, according to the embodiment of the present invention, in the lubricating oil supply system to the sliding portion (sliding portion) between the endless link device and the traveling path, air or inert gas is forcibly supplied. By constantly flowing through the oil pot, the reliability of the oil supply system is eliminated by eliminating the cause of the oil supply system functioning due to internal blockage in the middle of the oil supply pipe, wear powder from the discharge port at the end of the pipe, and blockage due to sediment growth. It becomes possible to improve.

  Further, the gas that flows in to stir the lubricating oil can be air or an inert gas.

  Moreover, since the sliding frictional resistance between the endless link device and the travel path does not fluctuate (increase) by increasing the reliability of the oil supply system, the load acting on the endless link device fluctuates (increases). As a result, the maintenance cost (including running cost) of the present apparatus (stretching machine) can be reduced.

  Further, in the stretching machine, by suppressing the fluctuation (increase) of the load acting on the endless link device, it is possible to reduce the weight of the link device under the same operating conditions (same equipment specifications).

  The oil supply system according to the present invention can be applied not only to a biaxial stretching machine but also to a horizontal or longitudinal stretching machine. In addition, the configuration of the sliding portion (sliding portion) between the endless link device and the travel path in the oil supply system according to the present invention is not limited to the above embodiment.

It is a top view which shows the whole structure which is one Embodiment of the sheet-like material extending | stretching machine which concerns on this invention. It is a longitudinal cross-sectional view which shows the partial cross section of the sheet-like material extending | stretching machine which concerns on this invention. In the sheet-like material extending | stretching machine which concerns on this invention, it is detail drawing which shows 1st Embodiment which additionally installs gas piping in the branch pipe of oil supply piping in parallel. In the sheet-like material extending | stretching machine which concerns on this invention, it is detail drawing which shows 2nd Embodiment which directly adds gas piping to the oil pot of the terminal of the branch pipe of oil supply piping.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Sheet-like object, 2 ... Grab device (clip), 3 ... Endless link device, 4 ... Intermediate guide rail, 5 ... Seat side guide rail, 6 ... Anti-sheet side guide rail, 7, 8, 9 ... Link device drive Sprocket, 10 ... link device, 11 ... link plate (moving body), 12 ... link plate, 13 ... link shaft, 14 ... link shaft, 15a, 15b ... chain link, 16a, 16b ... guide groove, 17a, 17b ... Bearing roller, 18a, 18b ... Thrust bearing, 19 ... Bed (base), 20 ... Spring, 30 ... Oil supply body, 31 ... Main pipe, 32 ... Distributor, 33 ... Branch pipe, 34, 34a, 34b ... Oil pot 35 ... T type joint, 36 ... check valve, 37 ... gas piping (gas inflow means), 36 ... check valve, 38, 40 ... check valve, A ... preheating section, B ... extension section, C ... heat treatment During, D ... sheet away section, E ... return link segment, F ... pitch-reduced section.

Claims (5)

An oil supply system for supplying lubricating oil to a traveling path in a sheet-shaped material stretching machine for stretching a sheet-shaped material,
A plurality of oil pots provided at a plurality of locations in the travel path;
A distributor that distributes the lubricating oil supplied from the oil supply device main body to the branch pipes and supplies the branch oil to the oil pots;
A gas inflow means for flowing a gas of any pressure into each branch pipe or each oil pot when the lubricating oil is distributed to the branch pipes and supplied to the respective oil pots by the distributor;
An oil supply system in a sheet-like material drawing machine, wherein the lubricating oil is supplied from each oil pot to the travel path in a state where gas is poured in by the gas inflow means.   2. The oil supply system for a sheet-like material drawing machine according to claim 1, wherein the distributor is configured to intermittently supply oil to the oil pots.   The oil supply system in the sheet-like material drawing machine according to claim 1 or 2, wherein the gas inflow means is connected to each branch pipe.   3. The oil supply system for a sheet-like material drawing machine according to claim 1, wherein the gas inflow means is connected to each oil pot. The sheet-like material stretching machine is configured to travel an endless link device in which a plurality of gripping devices that grip both side ends of the sheet-like material are arranged on both side ends of the sheet-like material along the traveling path. The oil supply system in the sheet-like material extending | stretching machine of Claim 1 characterized by these.

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