Machine washable serge and overfeeding device thereof

Abstract

The invention provides a machine washable serge and an overfeeding device thereof, and belongs to the technical field of new materials. The problem of poor stability in the prior art is solved. Warp yarns of the washable serge are 112Nm / 2 full wool yarns, weft yarns of the washable serge are 140Nm / 2 bollard fibers, fabric weave is two-up two-down twill, fabric twist is 112 / 2 (twist / meter), single yarns are 910 / Z, plied yarns are 1030 / S, and fabric finished product density is 458 pieces / 10cm in the warp direction and 441 pieces / 10cm in the weft direction. The overfeeding device for the machine washable serge comprises a rack and further comprises a conveying belt, an upper roll shaft assembly, a lower roll shaft assembly and a forming roll assembly, the upper roll shaft assembly is connected to the upper portion of the rack, and the lower roll shaft assembly is connected to the lower portion of the rack. The serge capable of being washed by the machine can be washed by the machine and is high in comfort, and the overfeeding device is high in stability.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology and relates to a machine-washable wool serge and an overfeeding device thereof. Background Art

[0002] Traditional wool fabrics have the "disadvantage" that they will shrink when exposed to water, which is also the biggest "disadvantage" of wool fabrics.

[0003] Specifically, wool fabrics often need dry cleaning, which is not only inconvenient but also expensive to maintain. As a result, most people do not have time to take care of wool fabrics after buying them. However, wool fabrics have a richer color, feel soft and comfortable, and have good moisture absorption and breathability, so many people love and hate them.

[0004] Silk fabric is soft and has poor abrasion resistance, so machine washing can easily cause it to pill, snag or lose its luster. Summary of the invention

[0005] The first object of the present invention is to provide a machine washable wool serge which is comfortable to the touch and can be machine washed in view of the above-mentioned problems existing in the prior art.

[0006] A second object of the present invention is to provide an overfeed device for machine washable wool serge according to the above invention.

[0007] The first object of the present invention can be achieved by the following technical solutions:

[0008] A machine washable wool-silk serge, characterized in that the warp yarn is 112Nm / 2 pure wool yarn, the weft yarn is 140Nm / 2 Doris fiber, the fabric structure is two-up and two-down twill, the fabric twist is 112 / 2 (twist / meter), wherein the single yarn is 910 / Z, the ply yarn is 1030 / S, the finished fabric density is 458 strands / 10 cm in the warp direction, 441 strands / 10 cm in the weft direction, the finished fabric weight is 230-250 g / m, and the finished fabric width is 140-160 cm.

[0009] The second object of the present invention can be achieved by the following technical solutions:

[0010] An invention relates to an overfeeding device for machine-washable wool serge, comprising a frame, and characterized in that it also comprises a conveyor belt, an upper roller assembly, a lower roller assembly and a forming roller assembly, wherein the upper roller assembly is connected to the upper part of the frame, the lower roller assembly is connected to the lower part of the frame, the forming roller assembly is located in the middle of the upper roller assembly, the conveyor belt is sleeved on the upper roller assembly and the lower roller assembly, the conveyor belt at the roller assembly is tightly attached to the forming roller assembly, and under the action of the forming roller assembly, the conveyor belt at the upper part of the forming roller assembly forms a groove structure with protrusions on both sides.

[0011] In the above-mentioned invention, in the overfeeding device for machine-washable wool serge, the upper roller assembly includes roller one and roller two movably connected at both ends of the frame, the lower roller assembly includes roller three and roller four movably connected at both ends of the frame, roller three is adjacent to roller one and the two are arranged up and down, roller four is adjacent to roller two and the two are arranged up and down, and the above-mentioned conveyor belt is sleeved on roller one, roller two, roller three and roller four.

[0012] In the above-mentioned invention, the overfeeding device for machine-washable wool serge is as follows: the forming roller assembly includes a fixed rod, a roller seat one, a roller seat two, a roller seat three, a side roller one, an intermediate roller and a side roller two; the roller seat two is fixedly connected to the middle of the fixed rod; the roller seat one and the roller seat three are fixedly connected to the fixed rod and the roller seat one and the roller seat three are respectively located at both sides of the roller seat two; the side roller one is obliquely movably connected to a roller seat one; the side roller two is obliquely movably connected to a roller seat three; the intermediate roller is transversely movably connected to a roller seat two.

[0013] In the above-mentioned invention for the overfeeding device of machine-washable wool serge, the side roller one and the side roller two have the same inclination angle and opposite inclination directions, and the lowest points of the side roller one and the side roller two are adjacent to the two ends of the middle roller respectively.

[0014] In the above-mentioned invention, in the overfeeding device for machine-washable wool serge, the fixed rod comprises an upper fixed rod and a lower fixed rod, and the upper fixed rod and the lower fixed rod are fixedly connected to the frame by fasteners, and the roller seat one, roller seat two and roller seat three are fixedly connected to the upper fixed rod, and the lower fixed rod is also connected to a supporting roller, and the supporting roller rests against the lower part of the conveyor belt.

[0015] In the above-mentioned invention of the overfeeding device for machine-washable wool serge, the upper fixed rod, the lower fixed rod, the roller seat one, the roller seat two, the roller seat three, the side roller one, the middle roller, the side roller two and the supporting roller form a roller group unit, and the number of the roller group units is several, and the several roller units are evenly distributed along the moving direction of the conveyor belt.

[0016] In the above invention, in the overfeeding device for machine-washable wool serge, the upper portion of the roller seat has two U-shaped concave connecting recesses, and the two ends of the side roller are respectively embedded in the corresponding connecting recesses.

[0017] In the above-mentioned invention of the overfeeding device for machine-washable wool serge, the upper parts of the roller one and the roller two are flush with each other, and the uppermost ends of the inclined parts of the side roller one and the side roller two are flush with the upper part of the roller one.

[0018] In the above-mentioned invention for the overfeeding device of machine-washable wool serge, the inclination angle of the side roller 1 is 20-30 degrees.

[0019] Compared with the prior art, the machine washable wool silk serge can make the entire fabric comfortable to the touch and machine washable due to the materials of the warp and weft yarns, and its stability and feel are relatively good.

[0020] At the same time, in this overfeeding device, under the action of the forming roller assembly, not only can the conveyor belt be tensioned, but also a groove structure can be naturally formed on the upper part of the conveyor belt. The machine-washable woolen serge located therein will not fall from the side of the conveyor belt during the conveying process. Moreover, the operator manually pushes the machine-washable woolen serge during the conveying process, which can stably realize the overfeeding process. Its stability is relatively high, and the structure of the device is relatively compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a three-dimensional structural schematic diagram of an overfeeding device for machine washable woolen silk serge.

[0022] Figure 2 The present invention is a schematic diagram of the structure of the forming roller assembly in the overfeed device for machine washable wool serge.

[0023] Figure 3 The present invention is a schematic diagram of the main structure of an overfeeding device for machine-washable woolen silk serge.

[0024] In the figure, 1, frame; 2, conveyor belt; 3, roller one; 4, roller two; 5, roller three; 6, roller four; 7, upper fixing rod; 8, lower fixing rod; 9, roller seat one; 9a, connecting notch; 10, roller seat two; 11, roller seat three; 12, side roller one; 13, middle roller; 14, side roller two; 15, support roller. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0028] The warp yarn of this machine's washable wool silk serge is 112Nm / 2 pure wool yarn, the weft yarn is 140Nm / 2 Doris fiber, the fabric structure is two-up and two-down twill, the fabric twist is 112 / 2 (twist / meter), of which single yarn is 910 / Z, ply yarn is 1030 / S, the finished fabric density is 458 strands / 10cm in warp direction, 441 strands / 10cm in weft direction, the finished fabric weight is 230-250g / m, and the finished fabric width is 140-160cm.

[0029] like Figure 1 and Figure 2 and Figure 3 As shown, the overfeeding device for machine washable wool serge of the present invention comprises a frame 1, and also comprises a conveyor belt 2, an upper roller assembly, a lower roller assembly and a forming roller assembly. The upper roller assembly is connected to the upper part of the frame 1, the lower roller assembly is connected to the lower part of the frame 1, the forming roller assembly is located in the middle of the upper roller assembly, the conveyor belt 2 is sleeved on the upper roller assembly and the lower roller assembly, the conveyor belt 2 at the roller assembly is tightly attached to the forming roller assembly, and under the action of the forming roller assembly, the conveyor belt 2 at the upper part of the forming roller assembly forms a groove structure with protrusions on both sides.

[0030] One or both of the upper roller assembly and the lower roller assembly are connected to an external driving member, and under the action of the external driving member, the conveyor belt can continuously and stably translate on the upper roller assembly and the lower roller assembly.

[0031] Since the forming roller assembly is located at the upper roller shaft assembly, a groove structure can be formed on the upper part of the conveyor belt under the action of the forming roller assembly. The machine-washable woolen serge located on the upper part of the conveyor belt and being conveyed will not slide off the side of the conveyor belt, and the operator can stably achieve overfeeding operation after manually pushing the machine-washable woolen serge.

[0032] The upper roller assembly includes a roller 1 3 and a roller 2 4 movably connected at both ends of the frame 1, and the lower roller assembly includes a roller 3 5 and a roller 4 6 movably connected at both ends of the frame 1, the roller 3 5 is adjacent to the roller 1 3 and the two are arranged up and down, the roller 4 6 is adjacent to the roller 2 4 and the two are arranged up and down, and the above-mentioned conveyor belt sleeve 2 is on the roller 1 3, the roller 2 4, the roller 3 5 and the roller 4 6.

[0033] Such a structure can stably tension the conveyor belt.

[0034] The forming roller assembly includes a fixed rod, a roller seat 1 9, a roller seat 2 10, a roller seat 3 11, a side roller 12, an intermediate roller 13 and a side roller 2 14. The roller seat 2 10 is fixedly connected to the middle part of the fixed rod, the roller seat 1 9 and the roller seat 3 11 are fixedly connected to the fixed rod and the roller seat 1 9 and the roller seat 3 11 are respectively located on both sides of the roller seat 2 10, the side roller 12 is obliquely movably connected to the roller seat 1 9, the side roller 2 14 is obliquely movably connected to the roller seat 3 11, and the intermediate roller 13 is transversely movably connected to the roller seat 2 10.

[0035] The fixing rod provides enough space for roller seat 1 9, roller seat 2 10 and roller seat 3 11 to connect. At the same time, roller seat 1 9, roller seat 2 10 and roller seat 3 11 can also stably connect side roller 1 12, middle roller 13 and side roller 2 14 to the fixing rod.

[0036] The side roller 12 and the side roller 2 14 have the same inclination angle and opposite inclination directions, and the lowest points of the side roller 12 and the side roller 2 14 are adjacent to the two ends of the middle roller 13 respectively.

[0037] Such a structure can make the groove structure formed on the conveyor belt 2 symmetrical on both sides of the groove.

[0038] The fixed rod includes an upper fixed rod 7 and a lower fixed rod 8, and the upper fixed rod 7 and the lower fixed rod 8 are fixedly connected to the frame 1 by fasteners. The roller seat 1 9, the roller seat 2 10 and the roller seat 3 11 are fixedly connected to the upper fixed rod 7. The lower fixed rod 8 is also connected with a support roller 15, and the support roller 15 rests against the lower part of the conveyor belt 2.

[0039] The upper fixing rod 7 is used to position a plurality of roller seats, and the lower fixing rod 8 is used to connect the supporting roller 15 .

[0040] At the same time, the upper fixing rod 7 and the lower fixing rod 8 are fixed to the frame 11 by fasteners, which effectively improves the structural compactness and connection firmness of the entire device.

[0041] The upper fixed rod 7, the lower fixed rod 8, the roller seat 1 9, the roller seat 2 10, the roller seat 3 11, the side roller 12, the middle roller 13, the side roller 2 14 and the support roller 15 form a roller group unit. The number of the roller group units is several, and the several roller units are evenly distributed along the moving direction of the conveyor belt 2.

[0042] Multiple roller group units are arranged in an orderly manner to ensure that a groove structure is stably formed on the upper part of the conveyor belt.

[0043] At the same time, the lower part of the conveyor belt 2 is stably supported to prevent the conveyor belt 2 from vibrating greatly during its movement.

[0044] The roller seat 9 has two U-shaped concave connecting recesses 9a on its upper portion, and the two ends of the side roller 12 are respectively embedded in the corresponding connecting recesses 9a.

[0045] The two ends of the side roller 12 are respectively embedded in the corresponding connection notches 9a, and such a structure can conveniently, quickly and stably connect the side roller 12 to the roller seat 1 9. Similarly, the side roller 2 and the roller seat 3, as well as the middle roller and the roller seat 2, all adopt similar connection structures, so the embodiments will not repeat the structures therein.

[0046] The upper parts of the roller shaft 1 3 and the roller shaft 2 4 are flush with each other, and the uppermost ends of the inclined parts of the side roller 1 12 and the side roller 2 14 are flush with the upper part of the roller shaft 1 3 .

[0047] The inclination angle of the side roller 12 is 20 degrees. According to the actual situation, the above angle of 30 degrees is also feasible.

[0048] This machine washable wool silk serge has the function of being comfortable to the touch and machine washable due to the material of the warp and weft yarns, and its stability and feel are relatively good.

[0049] At the same time, in this overfeeding device, under the action of the forming roller assembly, not only can the conveyor belt be tensioned, but also a groove structure can be naturally formed on the upper part of the conveyor belt. The machine-washable woolen serge located therein will not fall from the side of the conveyor belt during the conveying process. Moreover, the operator manually pushes the machine-washable woolen serge during the conveying process, which can stably realize the overfeeding process. Its stability is relatively high, and the structure of the device is relatively compact.

[0050] Specifications of machine washable wool serge after preparation:

[0051]

[0052] Technical performance parameters of machine washable wool silk serge:

[0053]

[0054]

[0055]

[0056] The prepared machine washable wool-silk serge has excellent drape, fluffiness and skeleton feel, and can ensure the smooth progress of subsequent spinning. The warp yarn is made of 120S ultra-fine shrink-resistant Merino wool, and the weft yarn is made of Doris fiber (natural machine washable). Both raw materials are natural machine washable.

[0057] 1. The dyeing process of this machine washable wool silk serge is as follows:

[0058] (1) Pre-dyeing treatment: clean the impurities in the wool tops and neutralize the acidity in the wool tops. After cleaning, the pH value is about 7. Raising the dyeing temperature to 50°C can help wet the wool. Yunkeling FFA increases the fiber penetration ability. Adding the matching amphoteric auxiliary Yunkeling B improves the dye uptake and the affinity between the fiber and the dye.

[0059] (2) There are many dye aggregates on the surface of wool fibers: through cleaning treatment in the dye vat, the friction fastness can be improved. The dehydration time of wool balls is required to be 2 minutes, and the water consumption rate is about 50%. Dehydration of wool balls can further reduce the residual wastewater inside the fiber.

[0060] (3) Re-washing requirements: The wool passes through four clean water troughs and four rollers to further clean the impurities remaining in the wool tops, and then is dried by round net suction at a temperature of about 80°C. The speed is reduced to 8M / min, because too fast a speed will make the wool too wet and feel bad, and too slow a speed will cause high static electricity in the wool.

[0061] 2. The pre-spinning process of this machine washable wool silk serge is as follows:

[0062] Process flow: Mixing B412 → First needle B423 → Second needle B432 → Third needle B442 → Fourth needle B452 → First pass FB441 → Last pass FB441 → Last second pass FB441

[0063] Pre-spinning precautions: 50-55 ml of blending and wool oil per minute. In order to better control the unevenness, add the last pass, the last pass to control the size of the machine yarn. If the yarn is too large, the last two passes are prone to unexpected drafting during unwinding, resulting in uneven yarn. The last two passes adjust the forming teeth from the original 39T to 40T, and the speed is adjusted from the original 43T to 39T.

[0064] 3. The spinning process of this machine washable wool silk serge is as follows:

[0065] 4. Process flow: spinning → self-doffing → doubling → twisting → steaming → picking up yarn

[0066] Precautions for spinning: In order to better control the yarn dryness, oily yarn, and broken ends, the roving warehouse should be stored for 24 hours. For compact siro spinning of fine yarn, the tension of fine yarn should be reduced, the speed should be slowed down, the wire hook should be changed to a lighter one, and hygiene should be done well to ensure that the leather roller and leather ring are smooth to prevent the generation of oily yarn. To ensure the quality of yarn, adjust the process parameters of the self-winding, remove harmful defects, and adjust the size and strength of the knot. Double twisting requires low speed, small tension, negative pressure of steaming yarn, 2 cycles, and control of the stability of yarn twist.

[0067] 5. The weaving process of this machine washable wool silk serge includes:

[0068] (1) Weaving design specifications and organization

[0069] According to the style and characteristics of the product design, the fabric structure is selected as 2 / 2 twill structure. The main design specifications are: machine width 180.5mm, finished product width 155mm, machine warp density 400 strands / 10cm, finished product warp density 458 strands / 10cm, machine weft density 433 strands / 10cm, finished product weft density 441 strands / 10cm, finished product weight 245g / m.

[0070] (2) The warp yarn of this product is 112 / 2 pure wool yarn, and the weft yarn is 140 / 2 Doris natural machine washable fiber. During weaving production, special attention should be paid to preventing the occurrence of missing warp and weft, foreign woven back yarn, head yarn, thin weaving, and sparse and dense spots. At the same time, attention should be paid to the occurrence of warp positive and negative twill and hanging warp and hanging weft.

[0071] (3) Before going on the machine, the mechanic must first clean the machine and focus on polishing the cloth surface and yarn channels such as the cloth support plate, side support, and width support roller to ensure smoothness and prevent scratches, hair abrasions, and whitening. When the whole machine is on the machine, the operator focuses on inspecting the rapier head, weft scissors, presser foot, release bar, weft storage device and other parts. The height of the heald frame is staggered front and back, and the splitting rod is placed before opening to prevent adhesion and small jumps. The wool yarn uses a tension of 25CN to make the yarn evenly arranged in the fabric without bowing, effectively preventing the unevenness of the cloth edge.

[0072] 6. Finishing process of machine washable wool silk serge:

[0073] This product has relatively high requirements for shrinkage rate, so corresponding process adjustments are made during post-finishing, as follows:

[0074] Process flow: singeing, vacuuming, double boiling, drying, mid-inspection, trimming, steaming, trimming, brushing, steaming, pre-shrinking, dyeing vat, unbending, lining boiling, drying, brushing, steaming

[0075] 1. The product has high requirements for shrinkage rate, and it must be overfed before baking and canning, because baking and canning will stretch the cloth. Using overfeeding can ensure that the cloth is not stretched. The whole process involves overfeeding and canning for 3 times, and pre-shrinkage after the middle canning. The last time, the canning process is strengthened to ensure the dry setting effect and the shrinkage rate of the product.

[0076] 2. Creases on silk and wool products are also a problem that is easy to occur in production. To solve the crease problem, first steam in a can, then pre-shrink, and then wash in a dye vat. Pre-shrinking is added between steaming in a can and dyeing in a vat, on the one hand to improve the shrinkage rate, and on the other hand to allow the cloth to absorb water evenly. Because the washing machine is prone to creases when it is in rope form, there is pressure, so it is changed to washing in a dye vat. The cloth is not pressurized in the rope state, rolled out, and then opened manually to ensure that there will be no creases on the cloth.

[0077] Through the above design ideas and trial production and sales, the physical indicators of the fabric have reached the first-class level marked in GB / T26382-2011 "Combed Wool Fabrics" tested by Zhejiang Fangyuan Testing Group Co., Ltd., and the machine washability index also meets the standard requirements. The fabric is skin-friendly and comfortable, with good stretchability. The product has been well received by customers after trial sales, and the market potential is very large.

[0078] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection claimed by the present invention.

Claims

1. A machine washable wool serge, characterized in that: The warp yarn is 112Nm / 2 pure wool yarn, the weft yarn is 140Nm / 2 Doris fiber, the fabric structure is two-up and two-down twill, the fabric twist is 112 / 2 (twist / meter), among which the single yarn is 910 / Z, the ply yarn is 1030 / S, the finished fabric density is: 458 strands / 10 cm in the warp direction, 441 strands / 10 cm in the weft direction, the finished fabric weight is 230-250 g / m, and the finished fabric width is 140-160 cm.

2. An invention for an overfeeding device for machine washable wool serge, comprising a frame (1), characterized in that: It also includes a conveyor belt (2), an upper roller assembly, a lower roller assembly and a forming roller assembly, wherein the upper roller assembly is connected to the upper part of the frame (1), the lower roller assembly is connected to the lower part of the frame (1), the forming roller assembly is located in the middle of the upper roller assembly, the conveyor belt is sleeved on the upper roller assembly and the lower roller assembly, the conveyor belt at the roller assembly is tightly attached to the forming roller assembly, and under the action of the forming roller assembly, the conveyor belt on the upper part of the forming roller assembly forms a groove structure with protrusions on both sides.

3. The overfeed device for machine washable wool serge according to the invention of claim 2, characterized in that: The upper roller assembly comprises a roller shaft one (3) and a roller shaft two (4) movably connected at both ends of the frame (1); the lower roller assembly comprises a roller shaft three (5) and a roller shaft four (6) movably connected at both ends of the frame (1); the roller shaft three (5) is adjacent to the roller shaft one (3) and the two are arranged up and down; the roller shaft four (6) is adjacent to the roller shaft two (4) and the two are arranged up and down; the above-mentioned conveyor belt is sleeved on the roller shaft one (3), the roller shaft two (4), the roller shaft three (5) and the roller shaft four (6).

4. The invention according to claim 3, wherein the overfeed device for machine washable wool serge is characterized in that: The forming roller assembly comprises a fixed rod, a roller seat one (9), a roller seat two (10), a roller seat three (11), a side roller one (12), an intermediate roller (13) and a side roller two (14); the roller seat two (10) is fixedly connected to the middle part of the fixed rod; the roller seat one (9) and the roller seat three (11) are fixedly connected to the fixed rod and the roller seat one (9) and the roller seat three (11) are respectively located at two sides of the roller seat two (10); the side roller one (12) is obliquely movably connected to the roller seat one (9); the side roller two (14) is obliquely movably connected to the roller seat three (11); and the intermediate roller (13) is transversely movably connected to the roller seat two (10).

5. The overfeed device for machine washable wool serge according to the invention of claim 4, characterized in that: The side roller one (12) and the side roller two (14) have the same inclination angle and opposite inclination directions, and the lowest points of the side roller one (12) and the side roller two (14) are respectively adjacent to the two ends of the middle roller (13).

6. The overfeed device for machine washable wool serge according to the invention of claim 5, characterized in that: The fixing rod comprises an upper fixing rod (7) and a lower fixing rod (8), the upper fixing rod (7) and the lower fixing rod (8) being fixedly connected to the frame (1) by fasteners, the roller seat 1 (10), the roller seat 2 (11) and the roller seat 3 (12) being fixedly connected to the upper fixing rod (7), and the lower fixing rod (8) being further connected with a supporting roller (15), and the supporting roller (15) being pressed against the lower part of the conveyor belt (2).

7. The overfeed device for machine washable wool serge according to the invention of claim 6, characterized in that: The upper fixed rod (7), the lower fixed rod (8), the roller seat one (9), the roller seat two (10), the roller seat three (11), the side roller one (12), the middle roller (13), the side roller two (14) and the supporting roller form a roller group unit, the number of the roller group units is several, and the several roller units are evenly distributed along the moving direction of the conveyor belt (2).

8. The overfeed device for machine washable wool serge according to the invention of claim 7, characterized in that: The upper part of the roller seat (9) is provided with two U-shaped concave connecting recesses (9a), and the two ends of the side roller (12) are respectively embedded in the corresponding connecting recesses (9a).

9. The overfeed device for machine washable wool serge according to the invention of claim 8, characterized in that: The upper parts of the roller shaft one (3) and the roller shaft two (4) are flush with each other, and the uppermost ends of the inclined parts of the side roller one (12) and the side roller two (14) are flush with the upper part of the roller shaft one (3).

10. The overfeed device for machine washable wool serge according to the invention of claim 9, characterized in that: The inclination angle of the side roller 1 (122) is 20-30 degrees.

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