JPH0241177Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the construction of a flat bar for a carding machine.

Conventionally, flat bars have been formed by machining and finishing an integral cast product consisting of a top clothing attachment surface and a bar end that supports itself and slides frictionally on a flexible bend using a connecting chain. .

Top clothing is pasted on the sticking surface between both bar ends, and the carding effect is better as the gap gauge between the top clothing and both needle tips of the cylinder is narrower, so improve the accuracy of the needle tips of the cylinder. Of course, in top clothing, it is required that the top sticking surface has good flatness.

The clearance gauge between the top and the cylinder is adjusted by placing the bar end of the flat bar on the flexible bend and bending the flexible bend, but for this reason, it is necessary to minimize the variation in the relative dimension between the top attachment surface and the bend sliding surface at the bar end. If there are around 100 flat bars, they will not work effectively.

In addition, when the flat bar is carded, it is subjected to a bending load due to the carding action of pulling it in the direction of the cylinder and its own weight, and it is required to withstand this load, so it must have a moment of inertia as large as possible within the range of the machine structure. There is a limit to how much it can be, and cast iron with a roughly T-shaped cross section is generally used. This cast iron requires drying treatment to prevent changes over time due to casting stress, and since it is difficult to obtain high precision with only machining finishing, manual correction processes are required, requiring a high level of skill. are becoming difficult to obtain at low prices.

Furthermore, even if a good quality flat bar is obtained, if the sliding surface becomes worn, a new sliding surface must be formed by machining, and the wall thickness can be reduced by machining several times. The disadvantage is that the flat bar cannot safely accept the above-mentioned bending loads, and the flat bar becomes unusable.

The present invention solves the above-mentioned drawbacks, and by attaching wear-resistant replacement parts to the sliding surface of the flat bar, the life of a high-quality flat bar can be extended, and the carding effect can be achieved with good accuracy and excellent carding performance. To provide a flat bar for a carding machine that can perform the following operations.

An embodiment of the present invention will be described below based on the drawings.

Fig. 1 is a perspective view of the flat bar, in which 1 is the flat bar body, 2 is a rib, 3 is a sticking surface, 4 is a clip surface, 5 is a knob with an arc-shaped head that engages with the sprocket, and 6 is a flat screw. It is composed of main parts having a plain block sliding surface 9, toe and heel sliding surfaces 10 and 11 at both left and right ends, and is configured symmetrically.

First, both wall surfaces of the knob 5 of the flat bar,
A retaining groove 7 for fitting and locking an elastic and wear-resistant cover (described later) is formed in the portion that does not come into contact with the sprocket. The retaining groove is formed in a half-moon shape to prevent the cover from coming off in the upward and longitudinal directions.

The wear-resistant cover 8 for fitting and locking onto the arcuate head of the knob 5 is made of a heat-treated steel plate or phosphor bronze plate with good elasticity and wear resistance, as shown in Fig. 2A.
It is curved inward following the arc shape of the head, and part of both ends are folded 12 as shown in Fig. 2B.
The width between both ends is slightly narrower than the width of the knob 5 to form an elastic and wear-resistant cover 8.

By sliding the cover 8 formed in this way onto the knob 5 from above or from the front, it can be elastically locked into the stop groove 7. Also, it can be easily removed by prying it with a screwdriver.

Further, the fold 12 has an open end 13 so that the inner surface of the cover 8 comes into close contact with the knob 5, and dimensional fluctuations are absorbed by the elasticity of the fold itself.

FIG. 3 shows a state in which the cover 8 is attached to the knob 5 in this manner.

Next, a plain block sliding surface 9 having a concave curved clearance 14, a toe 10, a heel 11
As shown in FIG. 4, the sliding surface clearance 14 has a plurality of through holes 15 in the center thereof, and countersunk holes 16 are provided in the positions corresponding to the through holes. Covers 17 and 18 made of elastic and wear-resistant heat-treated steel plates or phosphor bronze plates formed to have dimensions approximately equal to the clearance 14 of the dynamic surface are respectively brought into contact with the concavely curved clearance 14 surface, and covered with soft aluminum or phosphor bronze plates. A copper caulking pin 19 is inserted and connected.

Both ends of the caulking pin 19 are deformed by impact to fill the countersunk hole 16 and are fixed so that they do not come off.

FIG. 5 shows a state in which the covers 17 and 18 are respectively installed in concave curved clearances, and the end 17a of the cover 17 and the end 18a of the cover 18 installed in this way are respectively a plain block, a toe, Forms a new sliding surface as a heel. To remove the above covers 17 and 18, use the caulking pin 19.
can be easily removed by drilling a hole.

Figure 6 shows wear-resistant covers 8, 1 in this way.
7 and 18 are shown attached to the required parts, respectively.
The cover may be made of a steel plate, a bronze plate, or a plastic plate made of Teflon, polyamide, or the like. Moreover, the caulking pin can also be screwed. In this case, you can put a screw in one side of the cover and countersink the other side.

As described above, according to the present invention, an elastic and wear-resistant cover can be easily attached to a sliding part by simply machining a stopper groove or a through hole in a part of a ready-made top bar.

In addition, since the condition of wear can be checked and replaced easily, it has become possible to maintain the top and cylinder clearance gauges in good condition at all times and continue the carding action effectively. Therefore, a high-quality flat bar can be used almost permanently because there is no wear caused by direct sliding on the knob sliding surface, plain block sliding surface, toe, and heel sliding surface.

In addition, the elastic, wear-resistant cover attached to each sliding part can be easily obtained by press punching, so it is inexpensive and has excellent effects such as being disposable and replaceable.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the main parts of the flat bar body used in the present invention, and Fig. 2 A and B are perspective views and a part of the wear-resistant cover attached to the nozzle of the flat bar body, which is an embodiment of the present invention. Enlarged perspective view of notch,
Figure 3 is a perspective view showing the wear-resistant cover installed, and Figure 4 shows the wear-resistant cover installed on the plain block sliding surface, toe, and heel sliding surfaces of the flat bar body. FIG. 5 is a perspective view showing the wear-resistant cover shown in FIG. 4 attached, and FIG. 6 is a perspective view showing the flat bar for a carding machine according to the present invention in an assembled state. 1 ... Flat bar body, 2... Rib, 3...
Sticking surface, 4...Clip surface, 5...Knob, 6...
Flat screw, 7... Retaining groove, 8... Cover, 9... Plain block sliding surface, 10, 11
...Toe, heel sliding surface, 12...Turn back, 1
3...Open end, 14...Clearance, 15...
Through hole, 16... countersink hole, 17, 18... cover,
19...Caulking pin, 17a, 18a...Cover end.

Claims (1)

[Scope of utility model registration request] On the knob sliding surface of the flat bar body, there is an elastic, wear-resistant cover that curves inward along the outer circumferential surface of the knob and has a fold back at the end, and a stopper groove that engages with the position of the knob corresponding to the fold. A rectangular wear-resistant cover having a through hole is brought into contact with the plain block sliding surfaces, toe, and heel sliding surfaces of the flat bar body, and the wear-resistant cover and the plain block slide together. A flat bar for a carding machine, characterized in that a soft material is inserted through through-holes provided in the clearance parts of the face, toe, and heel sliding surfaces and are connected and fixed together.