JPH0211405Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a clip stand for a tenter clip that can be used in a film tenter, biaxial stretching machine, etc.

(Prior Art) FIGS. 3 to 5 show an example of a conventional tenter clip holding device for holding a film or the like. In the figure, 1 and 1 are a pair of left and right tenter clips, and the tenter clips 1 and 1 are respectively placed on a pair of clip stands 3 and 3 that are slidably disposed opposite to each other on a rail 2 as shown in the figure. installed. Further, the clip stands 3, 3 move at a predetermined speed from the inlet of the tenter 8, which will be described later, toward the outlet, and are turned 180 degrees at the outlet to return to the inlet.

Reference numeral 4 denotes a clip main body attached to a clip base 3. The clip main body 4 has an arch-shaped upright part rising from a base 4a, and a clip lever support shaft 5 is provided at the tip of the upright part. It is being Reference numeral 6 designates a clip lever whose approximately central portion is rotatably supported on a support shaft 5;
is the upper lever 6 bordering on the shaft support by the same support shaft 5.
a and a lower lever 6b. 7 is a liner attached to the base 4a of the clip body 4; 12 is a tension spring tensioned between the upper lever 6a of the clip lever 6 and the clip body 4;
The tension spring 12 supports the clip lever 6 on the support shaft 5.
From the two-dot chain line state shown in Fig. 3 with the axis as the axis,
The film, etc. 1 is rotated to the state shown by the solid line, and the film, etc.
It is designed to grip both side ends (ears) of 1.

Next, in Fig. 5, 8 is a tenter, 9a, 9
c is a clip opener disposed at the entrance and exit portion of the tenter 8 as shown in FIG. 5; 9b and 9d are
Clip closers 10a and 10b are provided at the entrance and exit portions of the tenter 8, respectively.

As will be described later at the entrance of the tenter 8, the lower edge 6 of the lower lever 6b of the left and right clip levers 6
c and the liner 7 on the base 4a, the film 1 is held at its left and right edges and moves with the clip bases 3, 3 sliding on the left and right rails 2, 2.
1 is stretched to a predetermined magnification while passing through the tenter 8, and at the exit of the tenter 8, the upper levers 6a, 6a of the left and right clip levers 6, 6 are stretched.
is the clip opener 9a at the outlet of the tenter 8.
In order to contact the wear ring 10a, the left and right clip levers 6, 6 rotate against the tension spring 12 to the state shown by the two-dot chain line in FIG.
Release the grip on the ears (ends on both sides) of film 1, and
Send 1 to the next process. Then, the left and right tenter clips 1, 1 turn 180 degrees and return to the tenter entrance.

FIG. 6 shows a perspective view of the conventional clip base 3,
The clip base main body 30 has a roller link 32 via a pin 31, and is connected to the adjacent clip base 3 via the roller link 32. 7 shows a view in the direction of arrow A in FIG. 6, and FIG. 8 shows a view in direction of arrow B in FIG.
Further, FIGS. 9 and 10 respectively show cross sections from C to C in FIG. 8.

However, the conventional clip holder 3 has the following drawbacks. That is, as mentioned above, although the clip base 3 slides on the rail 2, no consideration has been given to the discharge of abrasion powder generated from the sliding portion due to sliding resistance. That is, the surfaces 36 and 37 shown in FIGS. 9 and 10 are perpendicular (FIG. 9) or reversely inclined (FIG. 10) with respect to the clip table advancing direction D, respectively, to prevent abrasion powder from forming. Since the discharge does not proceed smoothly, once abrasion powder is generated, the abrasion powder itself acts as an abrasive and accelerates the wear of the sliding parts, shortening the life of the sliding material.

(Problems to be Solved by the Invention) The present invention attempts to solve problems such as the short life of conventional sliding materials.

(Means for solving the problem) Therefore, the present invention is a gripping device for film, etc. that is installed from the entrance to the exit of the tenter and moves on a rail that reverses from the exit and returns to the entrance. In a clip stand on which a pair of clips are placed, the clip stand contacts the rail and slides on the rail, and the sliding surface of the clip stand with the rail is at the rear (with the forward direction part at the front). It is tapered toward the opposite side of the film, and is used as a means to solve the problem.

(Function) Abrasion powder is generated when the sliding surface of the clip table slides on the rail, but the sliding surface is tapered backwards (towards the side opposite to the film) with the advancing direction at the beginning. Therefore, the generated wear powder is smoothly discharged backward along the same slope.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show an embodiment of the present invention.

FIG. 1 shows a perspective view of a clip base 3a according to an embodiment of the present invention, and a clip base main body 30a includes a pin 3.
A roller link 32 is connected via 1, and an adjacent clip base 3a is connected via the same roller link 32. FIG. 7 is also a view taken along arrow A in FIG.
Further, FIG. 8 shows a view taken along arrow B in FIG. FIG. 2 is a cross section from C to C in FIG. 8, showing the shape of the lower part of the clip base 30a. The surface 35 is inclined in the opposite direction (rearward) of the film 11 with the advancing direction portion at the beginning in the direction of arrow D representing the advancing direction of the clip table.

Next, to explain the operation of the embodiment configured as above, the clip base main body 30 shown in FIG.
When a moves in the direction of arrow D, abrasion powder generated between the rail 2 and the clip base main body 30a and remaining on the rail 2 can be moved in the direction of arrow E. Further, in order to smoothly discharge the wear particles, the angle θ formed by the line F perpendicular to the arrow D and the surface 35 must be greater than or equal to the friction angle between the clip base body 30a and the rail 2. This angle θ generally needs to be 2° or more,
Preferably it is 10° or more.

(Effects of the invention) As explained in detail above, in the present invention, the clip base is in contact with the rail and runs on the rail by sliding, and the sliding surface of the clip base with the rail is in the direction of travel. Since the tapered shape starts from the top and tapers backwards (toward the opposite side of the film), abrasion powder is smoothly discharged to the rear, which reduces the amount of wear on the rail and clip base body, extending the life of the clip. . Note that a sliding member that does not require a lubricant or that requires a lubricant may be attached to the clip main body side and/or the rail side.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a clip base showing an embodiment of the present invention, Figure 2 is a sectional view of the clip base main body showing an embodiment of the present invention at positions C to C in Figure 8, and Figure 3
The figures are a front cross-sectional view of a film gripping device using a conventional general tenter clip, Fig. 4 is a perspective view of the tenter clip in Fig. 3, Fig. 5 is a plan view of a general film tenter, and Fig. 6 7 is a perspective view of a conventional clip stand, FIG. 7 is a view taken from arrow A in FIGS. 1 and 6, FIG. 8 is a view taken from arrow B of FIG. 7, and FIGS. FIG. 3 is a sectional view of the conventional clip base main body at positions C to C in the figure. Explanation of the main parts of the diagram, 1...Tenter clip, 2...Rail, 3a...Clip stand, 8...
Tenter, 11...Film, 30a...Clip stand body, 35...Side.

Claims (1)

[Scope of utility model registration request] In a clip stand that carries a pair of clips, which are gripping devices for film, etc., which are installed from the entrance to the exit of the tenter and move on a rail that reverses from the exit and returns to the entrance, the clip stand is attached to the rail. The clip is in contact with the clip and runs on the same rail by sliding, and the sliding surface of the clip base with the rail is tapered from the forward direction to the rear (towards the side opposite to the film). Clip stand for tenter clips.