JPS62215196A - Lubricating method for tainter clip drive chain - Google Patents

Abstract

PURPOSE:To prevent the splash of lubricating oil by oiling in such a way that lubricating oil is shifted toward the center of a link plate using a centrifugal force occurring when a chain presses a sprocket. CONSTITUTION:Pressurized lubricating oil is jetted from a nozzle 46 toward the upper surface of the upper link plate 23 of a drive chain 21 constituting an endless chain running with the link pin 25 thereof upright. According to the aforesaid constitution, the roller 24 and the bush 26 of the drive chain 21 and the link pin 25 thereof can be lubricated, and the splash of lubricating oil can be prevented.

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 equipped with a clip body for clipping a film in, for example, a transverse stretching machine.

FIG. 4 shows a plan view of a chain row on one side of the transverse stretching machine, and the chain row 11 is composed of a large number of drive chains 12 and is driven by, for example, an upper drive sprocket 13 and a 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] - Conventional lubricating methods for the drive chain have employed a spray method in which lubricating oil is sprayed with compressed air on the side of the chain where the tension is slack, exiting the upper drive sprocket 13 as shown in FIG. However, in this method, the connecting pins (not shown) that connect the respective drive chains 12 that require the most lubrication by directly receiving chain tension are located inside the chains provided with clips, so the lubricating oil is sprayed. The lubricant spreads and most of the lubricant adheres to the parts of the chain pock or the clip body that do not require lubrication, and only a small amount reaches the connecting pin, resulting in insufficient lubrication even though the amount of lubrication is large. In addition, lubricating oil adhering to unnecessary parts is scattered by wind pressure while the chain is running, causing staining 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 object is to provide a lubricating device for a chain for driving a tenter clip that reliably supplies lubricating points to locations that require lubricating without scattering lubricating oil. There is a particular thing.

[Summary of the Invention] A lubricating device for a tenter clip drive chain according to the present invention squirts lubricating oil under pressure from a nozzle onto the upper surface of an upper link plate of a drive chain that constitutes an endless chain that runs with its connecting pins vertical. Accordingly, the roller of the drive chain, the bushings and connecting pins in contact with the roller are supplied with oil.

[Embodiment 1 of the Invention A description will now be given of FIGS. 1 to 3 showing an embodiment of the present invention. In FIG. 1, the main components of the drive chain 21 include a chain box 22, a link plate 23, a roller 24, a connecting pin 25, and the like. The two link plates 23 are connected by a bushing 26 as shown in FIG. It is connected to the plate 23 to form an endless chain. The connecting pin 25 supports the roller 24 through a bushing 26 in the middle, and the upper link plate 23 (FIG. 1) has a substantially semicircular hole 27 for lubricating oil on the outer periphery of the bushing 26. be.

A clip main body 28 is fixed to the upper surface of the chain box 22 by a bolt (not shown), and a lever 29 is attached to the clip main body 28.
A lip lever 31 is attached so as to be rotatable about a pin 3o, and when the clip lever 31 is in the position shown, a film (not shown) is clipped between it and the clip body 28. The A guide rail 36 fixed to the frame body 35 and the B guide rail 37 fixed thereto have guide rollers 39 to 41 rotatably supported up and down on a roller pin 38 fixed to the chain box 22, as well as guide rollers 39 to 41 fixed to the clip body 28. The chain 21 is guided in its travel by contact between guide rollers 42 and 43 that are rotatably supported.

A mounting member 45 is fixed to the A guide rail 36, and a nozzle 4 with an inner diameter of about 0.5 ff1m is attached to the mounting member 45.
6 is attached, and lubricating oil under pressure is ejected from a nozzle 46 in the form of a thread onto the upper surface of the link plate 23 above the running drive chain 21 (in FIG. 1). At this time, since the lubricating oil is viscous, it does not scatter, but rather the thread-like lubricating oil adheres to the link plate as if being pulled. In this way, the lubricating oil attached to the upper surface of the link plate 23 in the form of a string or band is removed from the drive chain 21.
When passing through the sprocket 13 etc., the link plate 23 receives centrifugal force and moves along the upper surface of the link plate 23 to the center thereof, thereby reaching the connecting pin 25 and lubricating the connecting pin 25 and the bush 26. The lubricating oil that has reached the connecting pin 25 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. conduct.

Note that it is not necessary to replenish the lubricating oil as described above continuously during operation of the tenter clip, and if the refueling time and stop time are set using a timer or the like and intermittent automatic operation is performed, the amount of lubricating oil consumed can be saved.

"Effects of the Invention" As explained above, the lubricating device for the tenter flip drive chain of the present invention jets out pressurized lubricating oil in the form of a thread from the nozzle attached to the guide rail, and continuously adheres it to the upper surface of the upper link plate. Lubricating oil is supplied by moving lubricating oil to the center of the link plate due to centrifugal force when the chain passes through the sprocket. 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 3 show one embodiment of the present invention, FIG. 1 is a partially sectional side view, FIG. 2 is a sectional view taken along the line 2-2 in FIG. 1, and FIG. 3-3 line sectional view excluding the connecting pin,
FIG. 4 is a plan view of one chain row.

Claims (1)

[Claims] By spouting lubricating oil under pressure from a nozzle to the upper surface of the upper link plate of the drive chain that constitutes an endless chain that runs with the connecting pin vertical, the roller of the drive chain, the bush in contact with this roller, and the connecting pin are sprayed from a nozzle. A lubricating device for the tenter clip drive chain.