C51 type carding machine bend roundness pull-down type adjusting method

Abstract

The invention relates to the technical field of spinning equipment, in particular to a pull-down type adjusting method for the roundness of a curved rail of a C51 type carding machine. Comprising the following steps that a pull-down adjusting mechanism is arranged below the position where the roundness of the curved rail is abnormal, the curved rail is restored to a perfect circle through the pull-down adjusting mechanism by taking a wall plate as a fixing point and taking gauge adjusting bolts on the two sides as supporting points, and the distance between the tip end of movable cover plate card clothing and the tip end of cylinder card clothing is adjusted. On the premise that the overall structure of equipment is not changed, the roundness of the curved rail is adjusted by tapping the deformed part, additionally arranging the pull-down bolt and matching with the nut. The structure is simple, implementation is easy, the equipment performance is not affected, and meanwhile the blank that no method for adjusting the roundness of the curved rail exists in the market is filled. Deformation recovery of the bend is completed without cutting the thickness of the bend, the service life of the bend is prolonged, and cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of spinning equipment, and in particular to a pull-down adjustment method for the roundness of a curved rail of a C51 carding machine. Background Art

[0002] Carding is an essential process in the pre-spinning process. The function of the carding machine is to decompose the bundled fibers and remove neps, short fibers and impurities. The movable flat is an important carding device of the carding machine. The main function of the movable flat is to remove short fibers and fiber seed crumbs, and to remove and decompose the neps during the production process. The carding distance between the movable flat and the cylinder is an important condition for ensuring normal carding, and is also an important means to ensure that the number of neps in the raw sliver is qualified. If the distance between the movable flat and the cylinder becomes larger or smaller, it will affect the quality of the raw sliver and cause damage to the card clothing.

[0003] Large cotton yarn production enterprises usually have a large number of Rieter C51 carding machines. Because the carding machines occupy a large area, are inconvenient to replace, and are expensive, most of them have been in operation for decades. In the C51 carding machine, the cylinder is cylindrical, with wall panels on both sides and a curved track on the top of the wall panel. The movable cover moves along the curved track. The distance between the movable cover and the cylinder is adjusted by 5 points, which are composed of the middle point and four auxiliary points. The four auxiliary points are evenly distributed on both sides of the middle point. The middle point can be adjusted up and down, and the four auxiliary points can only be adjusted upward. After years of use, the curved track will be unevenly stressed, and the two auxiliary points near the middle point will arch, causing the distance between the movable cover and the cylinder to increase, and the floating fibers will increase. The floating fibers are easy to rub and form knots, which will increase the number of cotton knots in the raw sliver, deteriorate the quality of the raw sliver, and affect the quality of the yarn.

[0004] There are two common methods for solving curved rail deformation in the market: the first one is also the most commonly used method, which is to grind the protruding curved rail to a qualified level to restore the curved rail to roundness. According to the actual state of the existing curved rail deformation, each grinding must cut at least 1.5mm thickness, and the curved rail will be scrapped after a limited number of cuttings, which is very costly. The second one is a spring system for the curved rail of a carding machine proposed by patent CN106367853A. The two ends of the inner side of the curved rail are provided with limit heads for installing arc-shaped adjustment plates. There are three adjustment springs on the inner side of the arc-shaped adjustment plate. The spring support force can be increased or decreased by adjusting the number of inserts in the spring pull rod, so as to achieve the purpose of adjusting the radius of the curved rail and adjusting the distance between the cover plate and the cylinder. However, it is aimed at adjusting the radius of the curved rail, not the restoration of roundness; and the distance between the cover plate and the cylinder is guaranteed to be unchanged, while the spring changes at any time, and there may be a problem of needle tip collision, which makes the card clothing scrapped. In the prior art, the most advanced carding machine also keeps the distance fixed. At the same time, the method proposed in this patent is only applicable to carding machines using a three-point flat plate adjustment system and cannot be applied to C51 carding machines.

[0005] In summary, it is urgent to develop a method for trimming the roundness of the curved rail without using grinding to solve the problem of the Rieter C51 carding machine being scrapped and replaced after multiple repairs and to reduce production costs. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a pull-down adjustment method for the roundness of a curved rail of a C51 carding machine, which does not use grinding means to trim the roundness of the curved rail and prolongs the service life of the curved rail.

[0007] The pull-down adjustment method for the roundness of the curved rail of the C51 carding machine described in the present invention comprises the following steps: a pull-down adjustment mechanism is set below the position where the curved rail has abnormal roundness, the curved rail is restored to a perfect circle by the pull-down adjustment mechanism, relying on the wall panel as a fixed point and the spacing adjustment bolts on both sides as fulcrums, and the distance between the tip of the movable cover plate card clothing and the tip of the cylinder card clothing is adjusted. The position relationship diagram between the cover plate, cylinder, curved rail and wall panel is shown in FIG. Figure 1 shown.

[0008] The pull adjustment mechanism is a pull-down adjustment bolt arranged between two adjacent spacing adjustment bolts between the curved rail and the wall panel, when the curved rail is in an abnormal roundness position.

[0009] The pull-down adjustment bolt passes through the wall panel, and a matching nut is arranged on the inner side of the wall panel.

[0010] The wall plate is provided with a long waist hole corresponding to the position where the pull-down adjustment bolt passes through.

[0011] The size of the long waist hole is φ13mm*20mm in diameter.

[0012] The matching nuts are adjusting nuts and adjusting locking nuts. The pull-down adjusting bolt passes through the long waist hole, is adjusted by the adjusting nut, and is locked with the adjusting locking nut to prevent the adjusting nut from loosening due to machine vibration.

[0013] A hole is punched and tapped below the abnormal position of the curved rail roundness, and a pull-down adjustment bolt is screwed in, and then locked with a curved rail locking nut.

[0014] The tapping is for processing a metric thread with a nominal diameter of 12 mm.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The present invention overcomes the difficulty that the adjusting bolts of the existing carding machine cannot make the curved rail reach the appropriate cover plate cylinder carding distance according to the process requirements, resulting in the reduction of the quality of the raw yarn.

[0017] (2) The present invention does not need to complete deformation recovery of the curved rail by cutting the thickness of the curved rail, thereby extending the service life of the curved rail and saving costs.

[0018] (3) The present invention adjusts the roundness of the curved track by tapping holes at the deformed part, installing pull-down bolts, and matching nuts without changing the overall structure of the equipment. The structure is simple, easy to implement, and does not affect the performance of the equipment. At the same time, it fills the gap in the market where there is no method for adjusting the roundness of the curved track. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a positional relationship diagram among the cover plate, cylinder, curved rail and wall plate of the present invention;

[0020] Figure 2 This is a schematic diagram of the installation position of the pull-down adjustment mechanism of the present invention;

[0021] Figure 3 This is a schematic diagram of the shape of the long waist hole made in the wall panel of the present invention;

[0022] 1. Cover plate; 2. Curved rail; 3. First gauge adjustment bolt; 3-1. Second gauge adjustment bolt; 3-2. Third gauge adjustment bolt; 3-3. Fourth gauge adjustment bolt; 4. Fifth gauge adjustment bolt; 5. Wall panel; 6. Cylinder; A. First pull-down adjustment bolt; A-1. First curved rail locking nut; A-2. First adjustment nut; A-3. First adjustment locking nut; B. Second pull-down adjustment bolt; B-1. Second curved rail locking nut; B-2. Second adjustment nut; B-3. Second adjustment locking nut. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with embodiments, but the protection scope of the present invention is not limited thereto.

[0024] Unless otherwise specified, all raw materials used in the examples are commercially available.

[0025] Our company currently has 54 Rieter C51 carding machines, all of which have been in operation for more than 22 years. The number is large and the service life is long.

[0026] Example

[0027] like Figure 2-3 As shown, a pull-down adjustment mechanism is provided below the position where the curved track has abnormal roundness, with the wall panel as a fixed point and the spacing adjustment bolts on both sides as fulcrums. The curved track is restored to a perfect circle through the pull-down adjustment mechanism, and the distance between the tip of the movable cover plate needle clothing and the tip of the cylinder needle clothing is adjusted.

[0028] Accurately locate the position where the roundness of the curved track 2 is abnormally arched, punch and tap M12 below the position where the roundness of the curved track 2 is abnormally arched between the first gauge adjustment bolt 3 and the second gauge adjustment bolt 3-1, open a long waist hole with a size of φ13mm*20mm at the corresponding position of the wall panel 5, and screw the first pull-down adjustment bolt A through the long waist hole into the threaded hole opened in the curved track 2, and lock it with the first curved track locking nut A-1. Set the first adjustment nut A-2 on the inner side of the wall panel 5, use the first gauge adjustment bolt 3 and the second gauge adjustment bolt 3-1 on both sides as support points, and the wall panel 5 as a fixed point, adjust the first adjustment nut A-2 to pull down the curved track 2 to adjust the roundness of the curved track 2, so that the curved track 2 becomes a perfect circle, and lock it with the first adjustment locking nut A-3 to prevent the machine vibration from loosening the first adjustment nut A-2. Make the distance between the tip of the needle cloth of the movable cover plate 1 and the tip of the needle cloth of the cylinder 6 reach the process requirements.

[0029] Punch and tap M12 below the position where the roundness of the curved track is abnormally arched between the third gauge adjustment bolt 3-2 and the fourth gauge adjustment bolt 3-3, open a long waist hole with a size of φ13mm*20mm at the corresponding position of the wall panel 5, and screw the second pull-down adjustment bolt B through the long waist hole into the threaded hole opened in the curved track 2, and lock it with the second curved track locking nut B-1. Set the second adjustment nut B-2 on the inner side of the wall panel 5, use the third gauge adjustment bolt 3-2 and the fourth gauge adjustment bolt 3-3 on both sides as support points, and the wall panel 5 as a fixed point, adjust the second adjustment nut B-2 to pull down the curved track 2 to adjust the roundness of the curved track 2, so that the curved track 2 becomes a perfect circle, and lock it with the second adjustment locking nut B-3 to prevent the machine vibration from loosening the second adjustment nut B-2. Make the distance between the tip of the needle cloth of the movable cover plate 1 and the tip of the needle cloth of the cylinder 6 reach the process requirements.

[0030] Among them, the first gauge adjustment bolt 3, the second gauge adjustment bolt 3-1, the third gauge adjustment bolt 3-2, the fourth gauge adjustment bolt 3-3 and the fifth gauge adjustment bolt 4 are original adjustment bolts of the C51 type cotton carding machine.

[0031] The spacing of the five points before the transformation is shown in Table 1. Figure 2 As shown:

[0032] Table 1 5-point spacing before transformation

[0033]

[0034] The 5-point spacing after the transformation is shown in Table 2:

[0035] Table 2 5-point spacing after transformation

[0036]

[0037] The comparison of quality test data before and after the transformation is shown in Table 3 below:

[0038] Table 3 Comparison of quality test data before and after transformation

[0039]

[0040] Based on the above data, the method described in the present invention can restore the roundness of the curved rail 2, adjust the distance between the cover plate 1 and the cylinder 6 to a qualified state, and thus reduce the number of neps and the short lint rate of the raw sliver. The above content is only a preferred embodiment to prove the effectiveness of the method described in the present invention, and cannot be considered to limit the scope of the embodiments of the present invention.

[0041] The present invention is not limited to the above examples. Equivalent changes and improvements made by ordinary technicians in this technical field within the essential scope of the present invention should all fall within the patent coverage of the present invention.

[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A C51 type carding machine curved rail roundness pull-down adjustment method, characterized in that: The following steps are involved: A pull-down adjustment mechanism is provided below the position where the roundness of the curved rail (2) is abnormal, with the wall plate (5) as a fixed point and the spacing adjustment bolts on both sides as fulcrums. The pull-down adjustment mechanism is used to restore the curved rail (2) to a perfect circle and adjust the distance between the tip of the card clothing of the movable cover plate (1) and the tip of the card clothing of the cylinder (6).

2. The C51 type carding machine curved rail roundness pull-down adjustment method according to claim 1 is characterized in that: The pull-down adjustment mechanism is a pull-down adjustment bolt arranged between two adjacent spacing adjustment bolts between the curved rail (2) and the wall panel (5), at a position where the roundness of the curved rail (2) is abnormal.

3. The C51 type carding machine curved rail roundness pull-down adjustment method according to claim 2 is characterized in that: The pull-down adjustment bolt passes through the wall panel (5), and a matching nut is arranged on the inner side of the wall panel (5).

4. The C51 type carding machine curved rail roundness pull-down adjustment method according to claim 3 is characterized in that: The wall panel (5) is provided with a long waist hole corresponding to the position where the pull-down adjustment bolt passes through.

5. The method for adjusting the roundness of the curved rail of the C51 carding machine by pull-down method according to claim 4 is characterized in that: The size of the long waist hole is φ13mm*20mm in diameter.

6. The method for adjusting the roundness of the curved rail of a C51 carding machine by pull-down method according to claim 3, characterized in that: The matching nuts are an adjusting nut and an adjusting locking nut.

7. The pull-down adjustment method for the roundness of the curved rail of the C51 carding machine according to claim 3 is characterized in that: A hole is punched and tapped below the position of the abnormal roundness of the curved rail (2), a pull-down adjustment bolt is screwed in, and the bolt is locked with a curved rail locking nut.

8. The method for adjusting the roundness of the curved rail of a C51 carding machine by pull-down method according to claim 7, characterized in that: The tapping is for processing a metric thread with a nominal diameter of 12 mm.

Images