JPS61296169A - Chain track of fabric tenter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a chain track for a roller chain, such as a woven cloth width machine, which is provided with a tensioning member on each chain link, comprising:
A stop guide rail on the chain sending side, a direction change guide member provided at the longitudinal end of the guide rail as a connecting member with the chain return side, and a drive chain gear meshing with the chain bin. The guide rail is configured as a support member for the horizontal lateral force acting on the woven fabric, and the tension member for transmitting the lateral force is a member for receiving the longitudinal force of the chain. The chain bin is supported by a ball bearing about a vertical axis coaxial with the chain bin, and is each equipped with lateral force rolling rollers that contact the outer surface of the guide rail on the side opposite to the woven fabric.

BACKGROUND OF THE INVENTION In a weaving machine of the type described above, the fabric to be treated is held at both ends and guided through a heat treatment zone, usually under tension in the transverse direction. This machine is generally called a creampie machine, and is used as a tensioning and fixing member.
Two so-called clip chain tracks are provided.

An endless roller chain runs within each track, and the roller chain holds tension members for securing the fabric. Tension members include bottles or clips. The roller chain is guided to change direction at the entry and exit sections of the machine. In the known machine, each chain is driven via a deflection guide wheel in the form of a chain gear on the machine run.

The roller chain has at least one roller that supports the weight of the chain.
It is supported on two running rails and at least one guide rail that absorbs the lateral forces resulting from the tensioned fabric. If each tension member has at least two lateral force rolling rollers supported externally on the chain links, and these lateral force rolling rollers abut against the guide rail from both longitudinal sides, , West German patent application publication 1
．． No. 460,640, the guide rail extends continuously from the feed side to the return side of the chain track at the chain deflection guide station at the machine entrance, so that a deflection guide gear is not required at this location. is taken into consideration. Impact points during the course of the clip chain path are thereby avoided or limited to the minimum necessary for the drive. However, in this known device, firstly, the chain pin is not used as a support for the lateral force rolling rollers, and secondly, an additional rolling roller must be provided on each tension member solely for deflection guidance. The cost is extremely high due to the necessity.

Nevertheless, this large outlay has been taken into consideration, since it makes it possible to avoid polygonal movements of the chain that occur when using chain gears for deflection guidance. Especially at relatively high chain speeds (
At a target speed of 200 m7 min), the chain is subjected to extremely strong impacts and makes it difficult or impossible to grasp the fabric selvedge in the grasping range by the pins or clips at the machine entrance and the pins or beams at the machine outlet. In order to avoid polygonal movements that make release of the IJ7 plate difficult and possibly even eliminate a straight cut of the edge, large deflection guide wheels are often arranged or expensive as the machine speed increases. However, they had no choice but to incorporate a shock absorber that was subject to wear and tear. However, especially in machine runs, the distance from the last deflection guide roll in front of the chain to the gripping point of the pin or clip should be as small as possible to avoid curling or curling of the free fabric selvedges. Therefore, it is desirable to provide a turning guide wheel as small as possible. The shock absorbers are also not sufficient, especially at relatively high machine speeds, both in terms of performance and the associated wear.

Problem to be Solved by the Invention It is an object of the invention to make the polygon effect of the roller chain advantageous at the machine entrance without having to provide the chain with special rolling rollers and without increasing the deflection guide radius. must also be removed at the machine outlet.

Means for Solving the Problems The solution of the invention is to provide a chain track of the type mentioned at the outset, with a chain deflection provided at the longitudinal end of the guide rail which is not provided with a drive. The guide member is constituted by a deflection guide track on which a lateral force rolling roller supported on a chain bin rolls.

Embodiment If the drive chain gear of the chain drive meshes with the chain in the region of the return side in a direction different from that of the woven fabric, according to an embodiment of the invention, it can be used as a deflection guide at the machine outlet. It is also possible to provide a smooth direction change guide track. In this case, the polygonal effect acts on the chain exclusively at a distance from critical points of the machine, so that it is sufficient to arrange a small damping element in order to obtain a quiet running of the chain in the entire range of the feed side. Normally, it is sufficient to contact the rolling surface of the chain.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in FIGS. 1 and 2, the roller chain, designated as a whole by the reference numeral 1, basically consists of a pin and a bush, as well as an outer link plate and an inner link plate, with the outer link plate and the fixed A pin connected to the inner link plate is held along its entire length in a bushing provided in the inner link plate. In cloth drafting machines, in particular in sheet drafting machines, each such chain link has a tensioning member fixed thereto, which may be, for example, a clip or a pin member. The feed side 3 (shown on the right in FIG. 1 and on the left in FIG. 2) of a roller chain 1 driven in the feed direction indicated by the arrow 2 is transverse to the tensioning member fixed to the chain links. A force (in the direction of the tensioned fabric and the opposing chain) is exerted and this lateral force can be taken up by means of the guide rail 5. For this purpose, the roller chain is provided with lateral force rolling rollers 6. The lateral force rolling roller 6 is mounted in a ball bearing coaxially with the chain pin which receives the longitudinal force of the associated chain.Therefore, the lateral force rolling roller 6 and the chain pin arranged coaxially therein are supported in ball bearings. The longitudinal force-receiving pins and bushings constitute the only members for supporting the chain against the lateral forces exerted by the fabric.

In the chain track according to the invention shown in FIG. 1, the chain is gripped by a pin or clip mechanism (not shown).
It moves from the return side 9 to the feed side 3 while being guided along a smooth direction change guide track on the entry side 7 with a . Since no chain gears are arranged on this entry side 7 of the roller chain 1, where no drive is arranged, no undesirable polygon effects occur. The radius of curvature of the deflection guide track 8, which is preferably approximately circular, can also have a smaller radius of curvature than in the case of typical deflection guide chain gears, since a large chain gear diameter is required. The main reason for this is that the avoidance of polygon effects is no longer an issue.

In the embodiment shown in FIG. 1, the roller chain 1 runs on the drive chain gear 11 on the entry side 10. Therefore, the drive chain gear 11 for the roller chain 1
A polygonal effect may be exerted on the pin or clip removal area 12 adjacent to the drive chain gear 11 due to the impact action of the drive chain gear 11 . To avoid this, the second
As shown in the figure, there is also a roller chain 1 on the running side.
A redirection guide track 13 is provided and a separate return side 9 is provided.
Provision is made to drive the chain in the feed direction using a drive chain gear 14 meshing with the chain. According to FIG. 2, the drive chain gear 14 meshes exclusively with the roller chain 1 located away from the feed side 3, which is necessary for fabric processing, so that the pin or clip gripping range is also affected by the pin or clip removal. There is no fear that an impact effect will be exerted on range 12 as well.

Effects of the Invention According to the invention, it is achieved that the deflection guidance is carried out by a smooth deflection guide track rather than by a chain gear, without the occurrence of undesirable polygon effects. On this deflection guide track, the lateral force rollers of the ball-bearing chain, which are present in either case, can roll. The deflection guide radius can also be made even smaller compared to conventional deflection guide chain gears, so that the distance between the feed roller and the bin or clip position within the machine's travel range can be additionally reduced. can.

According to the present invention, since a smooth direction change guide track is arranged,
Polygon effects generally do not occur.

[Brief explanation of the drawing]

1 is a plan view of a chain track with an endless roller chain of a centering machine, and FIG. 2 is a plan view of a further embodiment of the chain track of a width machine. 1... Roller chain, 2... Arrow, 3... Feeding side, 4... Arrow, 5... Guide rail, 6... Lateral force rolling roller, 7... Running side , 8... Direction change guide track, 9... Return side, 10... Running side, 1.1.14...
- Drive chain gear, 12... Pin or clip removal range, 13... Direction change guide track.

Claims (1)

[Scope of Claims] 1. A chain track of a roller chain (1) of a woven cloth width machine, etc., in which each chain link is provided with a tension member,
a guide rail (5) for the chain feed side (3);
One direction change guide member is provided at each longitudinal end of the guide rail as a connecting member with the chain return side (9), and the drive chain gear (1) meshes with the chain pin.
1, 14) and a chain drive device.
The guide rail (5) is designed as a support member for the horizontal lateral forces acting on the fabric, and the tension member for transmitting the lateral forces is coaxial with the associated chain pin which receives the longitudinal forces of the chain. The guide rail (6) is supported by a ball bearing around a vertical axis, and is equipped with a lateral force rolling roller (6) that contacts the outer surface of the guide rail on the side opposite to the woven fabric. 5) The chain direction changing guide member provided at the longitudinal end not equipped with the drive device is connected to the lateral force rolling roller (
The direction change guide track (8, 1
3) A chain track for a woven cloth drafting machine, characterized by comprising: 2. The drive chain gear (14) of the chain drive unit rotates the roller chain (
1), and which continues to both longitudinal ends of the guide rail (5), is connected to the direction change guide track (8, 13).
) The chain track according to claim 1, wherein the chain track is configured as: ).