JPH0357211B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for correcting a top bar of a carding machine top bar, on which the top clothing is pasted, to improve the plane accuracy of the cotton on which the top clothing is pasted.

In a carding machine, in order to perform a good carding effect, it is necessary to make the gap gauge between the cylinder needle tip surface and the top needle tip surface as narrow as possible, but the accuracy of the cylinder needle tip surface The reality is that it cannot be made very narrow to avoid contact due to the accuracy of the needle.

The top bar is made of elongated cast iron with an inverted T-shaped cross section, and conventionally, after forming the shape through a predetermined machining process, the accuracy of the top needle cloth attachment surface was measured while measuring the residual stress of casting and the machining process. The deformation of the top bar caused by residual stress is manually corrected by twisting and twisting.

When attaching top clothing to the top bar modified above, if the accuracy of the correction is poor, the needle tip must be ground after attaching the top clothing. The top needle cloth attachment surface of the top bar must be corrected with high precision.

This type of highly accurate correction requires a high degree of skill, and it takes time to become proficient.

Conventionally, in order to solve the above-mentioned drawbacks, a thermosetting resin is applied to a surface plate, and the top needle cloth sticking surface of the top bar is pressed against the resin, so that a predetermined thickness is formed between the top needle cloth sticking surface and the surface plate. There is a method of manufacturing a top bar in which a resin layer is formed, the resin layer is heated, cured, adhered, and integrated on the top needle cloth attachment surface, the top bar is separated from the surface plate, and the lower surface of the resin layer is used as the top needle cloth attachment surface. but,
In this method, when the resin layer is cured, shear stress is generated on the resin layer and the top needle cloth attachment surface due to curing contraction of the resin, which causes the top bar to curve, making it difficult to achieve high accuracy. There are drawbacks.

In addition, a resin layer covering surface is formed on the top needle cloth sticking surface of the top bar to integrally fix the resin layer to the top bar body, and the surface of the resin layer is cut flat to form the top needle cloth sticking surface. A method of manufacturing the top bar to be formed has also been considered.

However, when cutting the resin layer, the top bar must be firmly fixed to withstand cutting resistance, but when fixing something with distortion, the distortion may be corrected to some extent, or conversely, the distortion may increase, so cutting Even if plane accuracy is sometimes achieved, when the fixation is released, the top bar elastically recovers and distortion occurs, making it difficult to achieve high accuracy. Furthermore, even if both ends of the top bar are fixed, the central portion easily bends and escapes due to the cutting force, so there is a drawback that high precision cannot be obtained even by cutting.

Furthermore, in the conventional top bar repair method described above, the resin layer is integrally bonded to the top bar, so if the top bar needs to be repaired again after the top clothing has been attached and used for a long time, the above method can be used. The drawback was that it required a great deal of effort to remove the resin layer.

The present invention eliminates the drawbacks of the above-mentioned conventional method of correcting a top bar for a carding machine, improves the accuracy of the top needle cloth application surface of the top bar, and makes it possible to easily remove the resin layer even when re-correction is required. The present invention provides a method for modifying a top bar for a carding machine.

Examples will be described below based on the drawings.

Embodiment 1 As shown in Fig. 1 A and B, the top bar body 1
A plurality of small holes 3 are provided in the longitudinal direction of the top bar on the top clothing surface 2, and a release agent is applied to the top clothing surface 2 to form a non-adhesive film 41.

FIG. 2 is a front view showing an embodiment of a correction device used in the method of correcting a top bar for a carding machine according to the present invention. A height block 6 is provided with a predetermined interval.

As shown in FIG. 3, the height block 6 is
The upper surface is inclined in accordance with the inclination of the sliding surface 7 of the top bar main body, and the top clothing attaching surface 2 is arranged so as to be parallel to the surface plate 5.

Next, first, a release agent such as silicone or Teflon is applied onto the surface plate 5 and dried to form an extremely thin non-adhesive film 4.
2 is formed, and a thermosetting resin is applied onto the non-adhesive film 42 in an amount sufficient to fill the space between the surface plate surface and the top needle cloth application surface.

The sliding surface 7 is placed on the height block 6 and fixed very loosely with a clamp 8 so that the top needle cloth application surface 2 of the top bar body 1 comes into contact with the resin applied on the surface plate surface.

Multiple top bar bodies can be lined up and repaired at the same time, but when repairing one by one, a block 9 is installed in the measurement of the top bar body as shown in Figures 3 and 4 to prevent resin from flowing out. can be prevented.

The resin between the top needle cloth attachment surface and the surface plate is cured at room temperature to form a resin layer 10 of a predetermined thickness in which the small holes 3 are filled with resin.

After the resin has hardened, the top bar body and the resin layer are removed from the surface plate surface, and the excess resin layer protruding from the top needle cloth attachment surface of the top bar body is removed and finished, thereby completing the modification of the top bar.

In the above embodiment, the resin was applied onto the surface plate 5, but first the top bar body 1 was placed on the height block 6, and then the resin was poured into the space between the surface of the surface plate and the top needle cloth attachment surface. You can also do that.

Further, it is better to inject resin into the small hole formed in the top needle cloth attachment surface of the top bar in advance before placing the top bar main body, so that the small hole can be more reliably filled with resin.

In addition, resins include epoxy resin, polyester resin,
Although it is possible to speed up the curing time by uniformly heating the surface plate using a thermosetting resin such as a phenol resin, it is preferable to cure at room temperature since thermal distortion occurs.

As shown in FIG. 5, the top bar formed based on the above-described top bar correction method can obtain a highly accurate flat surface without distortion because the lower surface of the resin layer 10 is formed on a surface plate and cured at room temperature. .

Furthermore, since a release agent is applied to the surface of the top bar to which the top clothing is attached, and a non-adhesive film 41 is formed, it is possible to easily peel off only the resin layer 10 as shown in FIG.

Example 2 In the above example, an ultraviolet curable resin is used as the resin, and the resin is poured into the space between the surface plate and the top sticking surface of the top bar.

The upper surface of the surface plate is made of a transparent plate (for example, glass) that allows ultraviolet rays to pass through, and an ultraviolet irradiation device consisting of a high-pressure mercury lamp is installed below it to irradiate the ultraviolet curable resin with ultraviolet rays to harden the resin. It is something.

In this example, since the ultraviolet curing resin is cured by ultraviolet rays, the curing time can be extremely short, ranging from tens of seconds to several minutes.
This can greatly reduce work time.

In the first and second embodiments described above, it is also possible to previously drill a hole through the top bar and pour the resin through the through hole.

The top bar correction method of the present invention is carried out by the method described above, and the top bar can be easily corrected without requiring the skilled work of manually twisting or knocking out the top bar as in the past.

In addition, when the conventional top bar and the resin layer are integrated and heat-cured, or when the resin layer is cut after being formed, the top bar is distorted and accuracy is reduced, which is a disadvantage. Since the resin layer is cured at room temperature without adhesion, an extremely high-precision top needle cloth attachment surface can be obtained.

In addition, even when re-adjustment is necessary, if the resin adheres to the top bar, it takes a lot of effort to remove the resin, but in the present invention, a non-adhesive film is formed on the surface where the top needle cloth is attached. Therefore, the resin layer can be easily removed using the top bar.

In addition, when the top bar modified by the above modification method is used and the top clothing is attached, the needle tip accuracy of the top clothing is good, there is no need for grinding, a good top needle tip is maintained for a long period of time, and the sliver quality is improved. This invention has excellent effects such as being able to improve.

[Brief explanation of drawings]

Fig. 1 shows the top bar main body used in the method of correcting a top bar for a carding machine according to the present invention, A is a partially cutaway front view, B is a bottom view, and Figs. 2, 3, and 4 are according to the present invention. FIG. 2 shows a front view, FIG. 3 shows a side view, and FIG. 4 shows a sectional view, and FIGS. 5 and 6 show a top bar modified according to the present invention. , FIG. 5 is a partially cutaway front view, and FIG. 6 is a front view of the resin layer. DESCRIPTION OF SYMBOLS 1...Top bar body, 2...Top needle cloth attachment surface, 3...Small hole, 41, 42...Non-adhesive film, 5...
...Surface plate, 6...Height block, 7...Sliding surface,
8...Clamp, 9...Block, 10...Resin layer.

Claims (1)

[Claims] 1. A release agent is applied on a surface plate and dried to form a non-adhesive film, a predetermined amount of resin is applied on the non-adhesive film, and a plurality of mold release agents are applied to the top needle cloth pasting surface. At the same time, the top bar main body, which is coated with a mold release agent, is pressed against the resin and the small holes are filled with resin, and then the resin is cured and the top bar is bonded to the clothing covering surface. A method for repairing a top bar for a carding machine, characterized in that a resin layer of a predetermined thickness is formed between the top bar and the surface plate. 2. A method for repairing a top bar for a carding machine according to claim 1, characterized in that the resin is an ultraviolet curable resin, and a resin layer is formed and cured by irradiating the resin with ultraviolet rays from below the surface plate. .