JPS5842094B2 - Cryptien - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a clip chain with a simple structure that can reliably convey a synthetic resin film under tension.

Conventionally, a chain with a lip, such as a tenter clip, has been widely used, but it has been integrated with a chain 7 to clamp a mechanism for tensioning and transporting fabrics and sheets, but it has become larger overall. It has a complicated shape, and although it is satisfactory for the purpose of work, it is expensive because the production cost increases, so it is used to convey relatively thin synthetic resin film under tension. It has an extremely simple structure for a cheno with a lip mechanism.

A concrete example of this is shown in FIGS. 7 and 8, in which the base end is pivotally supported on one end of the outwardly bent piece 20.20 of a roller chain with an attachment. A presser piece 21 is attached on one side of this bend,
The distal end 22' of the torsion spring 22 attached to the upper base end of the presser piece 21 is engaged with the locking hole 23 from the upper surface of the distal end of the presser piece 21, and the bent tip 21' of the presser piece 21 is engaged with the locking hole 23. is in constant contact with the upper surface of the bent piece 20, and the film F is held between the tip 21' of this holding piece and the upper surface of the bent piece 20 of the checker 7.
A tongue piece 2 is made by cutting out a part of the middle part and bending it downward.
4, and this tongue piece 24 has a size that fits between the rollers 25 of the chino, and when it comes into contact with the tip of the tooth of the sprocket, the holding piece 21 is pushed up to release the clamping part and break the contact with the tip of the tooth. It is designed to perform a clamping operation.

However, with this configuration, it is inevitable that the main roller chain will stretch and the roller parts will wear out due to use, and as a result, the pitch will gradually shift, making the film clamping mechanism unstable and causing problems. Moreover, since a torsion spring is used, there are various problems such as failure of the clamping function due to breakage or the like.

The present invention solves these problems and operates smoothly due to its structure.Moreover, even if changes such as elongation or wear of the chain occur, clamping, releasing the clamping, or starting clamping is always performed smoothly, and the configuration is simple. Our goal is to provide clip chains that are easy to use and can be mass-produced.

That is, the chain 7 of the present invention can be used in a pinch in a power transmission roller chain, in particular, as one link plate of the outer link, by bending three pieces of appropriate length horizontally and in parallel at right angles at upper and lower positions from the base plate attached to the inner link. A protruding clip base plate is attached, and a presser plate with one side bent downward is fixed to the upper end of a stepped guide pin that vertically passes through the center portions of the upper and lower support pieces of the base plate. a compression spring is interposed between the stepped portion of the guide pin and the lower surface of the upper receiving piece so that the bent tip of the holding plate always comes into contact with a receiving groove carved on the upper surface of the upper receiving piece; The lower end of the guide pin is configured to protrude beyond the lower receiving piece, and when the lower end of the guide pin comes into contact with the boss part of the Cheno sprocket or the upper surface of the guide piece, the holding plate is lifted against the spring force, and this The structure is such that when the holding plate lifting force is removed, the film clamping force is applied.

Hereinafter, one embodiment of the clip chain of the present invention will be described in detail with reference to the drawings. In the one shown in FIGS. 1 to 4, a clip is provided at every two pitches of the chain,
A clip 10 is attached in place of the link plate on one of the outer links in the chain 1, which is similar to the well-known roller chain structure. An upper support piece 13 and a lower support piece 14 of appropriate length are bent and protruded from the connected base plate 11 in vertical positions horizontally and parallel to each other. A small-diameter hole 13' is bored in the upper receiving piece 13 and a large-diameter hole 14' is made in the lower receiving piece 14 at the axis center.
, 14', a stepped gamemed pin 15 having a larger diameter at the lower part is inserted through the upper part of the guide pin 15, and one side of the upper half of the guide pin 15 is cut to form a so-called cut-out circular hole 13' in the upper receiving piece 13. By inserting a guide pin therein, a rotation prevention effect can be obtained, and an upper receiving piece 13 is provided at the upper end of the guide pin 15.
A holding plate 16 having a width that almost matches the width of the receiving piece 13 and having one side opposite to the tip side bent obliquely downward is fixed to the holding plate 16.
The coiled spring 17 is inserted between the stepped portion 151 of the guide pin 15 and the lower surface of the upper receiving piece 13, so that the bent end side 16' of the presser plate 16 forms a cut groove 18 formed on the upper surface of the leading end of the upper receiving piece 13.
In this state, the lower end 15'' of the guide pin 15 protrudes from the lower surface of the lower receiving piece 14 by an appropriate dimension.

Reference numerals 4 and 41 indicate guide rails.

The chaino constructed as described above is arranged in such a way that the clip parts face each other and are arranged in parallel at appropriate intervals, and the sprocket 5 has a boss 51 with a dog-shaped outer diameter as shown in Fig. 5. Use it by wrapping it around the length.

Then, the lower end 15'' of the guide pin 15 of the clip chain comes into contact with the outer periphery of the post 51 of the sprocket 5 and is pushed up against the coil spring 17, and the presser plate 16 attached to the top end is lifted, as shown in FIG. It will be in the film receiving position as shown.

Then, the end of the film F is inserted between the lifted presser plate 16 and the upper support piece 13, and the film F is moved so that the guide pin 15 moves closer to the outer periphery of the post 51 as the chain moves away from the apex position within the pitch of the sprocket 5. The pushing up force is gradually removed and the spring 17 lowers the bent end edge 16' of the holding plate 16.
The side edges of the film F are held by the cut grooves 18 on the upper surface of the upper support piece 13, and the film F is conveyed under tension to the target position by both clips moving in parallel, and the required processing is carried out during this time. Operations corresponding to the intended work, such as being applied to the film or being supplied to other articles, are performed.

In order to remove the film from the clip chain, the chain should be wound in a state opposite to that described above so that the lower end 15'' of the guide pin 15 comes into contact with the boss 51 of the sprocket 5 and is pushed up. When this position is reached, the clamping force between the holding plate 16 and the upper surface of the upper receiving piece 13 is automatically released, and the film can be removed from the chain and sent to the next process by being moved as it is.

In this way, the clip chain of the present invention has a power transmission component similar to that of a general roller chain, and has a clip structure in which upper and lower support pieces are bent and integrally formed on one link plate of the outer link. By assembling the plate, a clip mechanism is attached to the side of the chino using the upper and lower receiving pieces of the plate, the presser plate, the guide pin, and the coiled spring incorporated into the plate, which is different from the conventional simple method of this type. There is no problem with the desired operation of the chain due to elongation of the chain or wear of the rollers that occurred with the clip chain structure, and the operation is performed by contact between the outer periphery of the boss of the sprocket and the guide pin on the chain side. Because this is possible, there is no problem with the opening, and both the releasing and clamping operations of the lip are performed accurately and smoothly.

Furthermore, when manufacturing a chino, it has many advantages, such as being mass-producible because it can be formed mainly by press work, and being easy to assemble and being able to provide at a low price.

In addition to using the boss of the sprocket to open and close the clip on the chain, it is also possible to install something like a guide piece or cam in the middle of the chain 7's movement, which has the function of coming into contact with the lower end of the guide pin and lifting it. You can also do this.

Furthermore, instead of the single cut groove shown in the above embodiment, multiple thin grooves are cut into the upper surface of the upper support piece, and the bent end of the holding plate is also made slightly flattened to provide a plurality of protrusions. None, or you can hold it between wide surfaces.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention.
The figure is a partial front view of one specific example, Figure 2 is an enlarged front view of the link part with the clip, and Figure 3 is the m-
■Visual sectional view, Figure 4 is a diagram showing the usage mode, Figure 5 is the 4th
V-V composition in the figure, Figure 6 is a Vl-VI view of Figure 4,
FIGS. 7 and 8 are diagrams showing an example of a conventional device. 1... Cheer 7. 2... Pin, 5... Sprocket, 51... Boss, 10... Clip, 11... Base plate part, 13... Upper receiver piece, 13'...・Hole, 14... Lower receiving piece, 14'... Hole, 15... Guide pin, 151... Step part, 15... Lower end, 16
... Pressing plate, 161 ... Bent tip edge, 17 ... Coiled spring, 18 ... Cut groove.

Claims (1)

[Claims] 1. As one of the outer links for each required pinch in a power transmission roller chain, a clip base plate with three pieces of an appropriate length bent and protruded from the base plate in parallel to the sides at right angles at the upper and lower positions. A stepped guide pin is disposed through the center portion of the upper support piece and the lower support piece of the base plate in an unrotatable state in the vertical direction, and the upper end of the guide pin is attached to the upper support piece. A presser plate with one side bent downward at an angle opposite to the upper surface of the tip side is fixed, and a spring is installed between the stepped portion of the guide pin and the lower surface of the upper receiver piece so that the bent end of the presser plate layer comes into contact with the upper surface of the upper receiver piece. intervene,
The clip chain is constructed such that the lower end of the guide pin protrudes from the lower receiving piece by an appropriate amount.