JPS62215417A - Oil feed device for drive chain - Google Patents

Abstract

PURPOSE:To make it possible to feed lubrication oil to a required position without the oil being scattered, by forming oil grooves in the upper surface of each upper link plate in a drive chain which travels with connecting pins being vertically arranged, and by sticking oil to the oil grooves. CONSTITUTION:In a drive chain which travels with connecting pins 25 being vertically arranged, comprising a chain box 22, link plates 23, rollers 24 and the connecting pins 25, two substantially semicircular lubrication oil holes 27 are formed in each upper link plate 23 along the outer periphery of a bushing 26. Further, oil grooves 28, 29 are formed on the inner peripheral side of the drive chain 21, having a moderate inclination on the inner peripheral side of the chain in order to facilitate the introduction of lubrication oil while having a steep inclination on the outer peripheral side of the chain in order to make the flow-out of lubrication oil difficult. Further, a nozzle 46 is attached to an attaching member 45 secured to a guide rail 36 with an inclination to the upper surface of the link plate 23, thereby lubrication oil is jetted onto the upper surface of the link plate 23.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field to which the Invention Pertains] The present invention relates to a lubricating device for a drive chain formed endlessly by being stretched between a pair of sprockets.

FIG. 6 shows a chain row on one side of a horizontal stretching machine using an endless chain, and the chain row 11 is composed of a large number of drive chains 12, for example, an upper drive sprocket 13.
and is driven by the lower idler sprocket 14. The horizontal stretching machine arranges two chain rows 11 in the left-right direction, with the intervals between the chain rows 11 being wider in the upper direction, for example. The film enters from below and is clipped by a tenter clip (not shown) fixed above the chain 12, and then stretched in the transverse direction as it moves upward.

[Prior Art] A conventional method of lubricating a drive chain has been a spray method in which lubricating oil is sprayed using compressed air on the chain tension slack side exiting the upper drive sprocket 13 shown in FIG. In this system, connecting pins (not shown) that connect the drive chains 12 most in need of lubrication by directly receiving chain tension are located inside the chains.

Therefore, the lubricating oil is spread by spraying and most of it adheres to the parts of the Chenpox or the clip body that do not require lubrication.
Only a small amount reached the connecting pin, and even though the amount of oil was large, the amount of oil was insufficient. In addition, lubricating oil adhering to unnecessary areas is scattered by wind pressure while the chain is running, causing contamination of the running film.Furthermore, as film running speeds have increased in recent years, the problem of lubricating oil scattering has become even more serious.

[Object of the Invention] The present invention has been made from this viewpoint, and its purpose is to provide a drive chain lubrication device that reliably supplies lubrication to locations that require lubrication without scattering lubricating oil. .

[Summary of the Invention] The oil supply device for the drive chain 7 according to the present invention is such that an oil groove is provided inside the center of the drive chain on the upper surface of the upper link plate of the drive chain that constitutes an endless chain that runs with the connecting pins vertically. Another feature is that lubricating oil is deposited on the link plate on the inner peripheral side of the oil groove.

[Embodiment of the Invention] Hereinafter, an explanation will be given with reference to FIGS. 1 to 4, which show an embodiment of the present invention when used in a transverse stretching machine.

In FIG. 1, the drive chain 721 is connected to the chain box 22-
The main components are a link plate 23, a roller 24, a connecting pin 25, etc. The two link plates 23 are connected by a bush 26 as shown in FIG.
And 6 straight connecting pin 25 fixed to Chenpox 22
is inserted into the bush 26, so that the chain box 22 and link plate 23 are connected to form an endless chain. The connecting pin 25 has a bush 2 in the middle.
The roller 24 is supported via the roller 6.

As shown in FIGS. 2 and 3, the upper link plate 23 (FIG. 1) has two approximately semicircular lubricating oil holes 27 on the outer periphery of the bushing 26, and on the inner periphery of the endless chain. Oil grooves 28 and 29ψ29 are provided. As shown in Figure 4, these oil grooves 28, etc. have a gentle slope on the inner circumference side of the endless chain to facilitate the inflow of lubricating oil, and a strong slope on the outer circumference side to make it difficult for lubricant oil to flow out. It is preferable.

A clip main body 31 is fixed to the upper surface of the Chenpox 22 with a bolt (not shown), and a lever 32 is attached to the clip main body 31.
A lip blade 34 is attached so that it can freely rotate around a pin 33, and when the clip blade 34 is in the position shown, a film (
(not shown). The A guide rail 36 fixed to the frame 35 and the B guide rail 37 fixed thereto have guide rollers 39 to 41 rotatably supported vertically on a roller pin 38 fixed to the chain pox 22, as well as guide rollers 39 to 41 fixed to the clip body 31. When the guide rollers 42 and 43 that are rotatably supported come into contact with each other, the chain 21
are guided through the route.

A mounting member 45 is fixed to the A guide rail 36, and a nozzle 46 with an inner diameter of about 0.5 mm is attached to the mounting member 45 at an angle of approximately 100 degrees with respect to the upper surface of the link plate 23. The lubricating oil having the following properties is injected onto the upper surface of the upper link plate 23 of the running drive chain 721 at a rate of about 24 cc/min. The lubricating oil that has adhered to the upper surface of the link plate 23 in the form of a thread or band is transferred to the outer circumferential side due to the centrifugal force at both ends when the drive chain 721 rotates, and the lubricating oil that has adhered near the connecting pin 25 reaches the connecting pin 25 as it is. The lubricating oil attached at a position away from the connecting pin 25 flows into the oil grooves 2B and 29, and the oil grooves 28 and 29 are inclined at about 30 degrees with respect to the center of the chain, so that the lubrication in the oil grooves 28 and 29 is The oil is washed away by a component of the centrifugal force, and the lubricating oil that flows into the oil groove 29 reaches the connecting pin 25. The lubricating oil flowing into the oil groove 28 flows down from the hole 27 to lubricate the roller 24 and bush 26, and also flows along the upper surface of the roller 24 to the outer periphery of the roller 24 to lubricate the roller 24, sprocket 13, etc. Do this.

Note that the above-mentioned lubricating oil supply does not need to be carried out continuously during operation of the tenter clip, and if the intermittent automatic operation is achieved by setting the oiling interval and stop time using a timer or the like, lubricating oil consumption can be saved. Also, the shape of the link plate 23 is
As shown in the figure, it is usually cocoon-shaped, but if you make it straight by bulging the inner circumference of the sprocket like the ring plate 23A shown in Figure 5, the surface area for the lubricating oil will be wider and lubrication will be more stable. Oil will stick.

Furthermore, FIG. 7 shows a plan view of the upper link plate 23B in another embodiment of the present invention, in which the oil groove 28A is linear with a width of about 6 mm and a depth of about 1 mm, and the directionality of the link plate is It is the one that has been eliminated. By doing so, there is no directionality when connecting the link plates, so there is an advantage that assembly errors do not occur. FIG. 8 also shows a plan view of the upper link plate 23C in another embodiment of the present invention, in which the oil groove 28B has a wide groove width on the inner peripheral side, and lubricating oil is deposited in the oil groove 28B. By doing so, it functions as a reliable saucer.

[Effects of the Invention] As explained above, the oil supply device for the drive check 7 according to the present invention jets lubricating oil under pressure in the form of a thread from the nozzle attached to the guide rail and continuously adheres to the upper surface of the upper link plate. By doing so, the lubricating oil moves to the center of the link plate due to the centrifugal force when the drive chain 7 passes the sprocket, enters the oil groove, and the entire amount reaches the connecting pin and the roller bushing. Therefore, unlike the conventional one-spray type, there is no scattering of lubricating oil, and it has the advantage of being able to reliably supply lubricating oil to parts such as connecting pins, bushes, and rollers that require lubricating oil.

[Brief explanation of drawings]

1 to 4 show one embodiment of the invention, FIG. 1 is a partially sectional side view, FIG. 2 is a sectional view taken along line 2-2 in FIG. 1, and FIG. 3-3 line sectional view excluding the connecting pin, FIG. 4 is a sectional view of the oil groove, FIG. 5 is a plan view of a link plate in another embodiment of the present invention, and FIG. 6 is a plan view of one chain row. 7 and 8 are plan views of the north link plate in other embodiments of the present invention. 21... Drive chain 7, 23, 23A... Link plate, 24... Roller, 25... Connecting pin, 46...
... Nozzle 6 Fig. 2 Fig. 3; Fig. 1'4; Fig. 1'5 Juice Fig. 6

Claims (1)

[Claims] An oil groove is provided inside the center of the drive chain on the upper surface of the upper link plate of the drive chain constituting an endless chain that runs with the connecting pin vertically, and an oil groove is provided in the oil groove or on the link plate on the inner circumferential side of the oil groove. A drive chain oil supply device that applies lubricating oil.