Double-sided calendaring process for satin cloth and special equipment thereof

Abstract

The invention belongs to the technical field of fabric processing, and discloses a satin cloth double-sided calendaring process and special equipment thereof.The satin cloth double-sided calendaring process comprises a preheating box, a cloth pressing support is fixedly installed on one side of the preheating box, a hot pressing roller is installed in the cloth pressing support, a cleaning assembly is arranged on one side of the hot pressing roller, and a cooling support is fixedly installed on the side, away from the preheating box, of the cloth pressing support; a plurality of cooling rollers are uniformly mounted in the cooling bracket, and a winding roller is rotationally mounted at the tail part of the cooling bracket; during working, a motor drives a first rotating shaft to rotate, the first rotating shaft rotates to drive a first gear and a third gear to rotate at the same time, when the first gear is engaged with a second gear, the second gear is driven to rotate, the second gear rotates to drive a first reciprocating lead screw to rotate, and the first reciprocating lead screw rotates to drive a moving seat to reciprocate; and the moving seat moves to drive the scraper to move to scrape impurities on the outer wall of the hot-pressing roller, and residues attached to the outer wall of the hot-pressing roller are removed in time, so that the preparation quality of satin cloth is ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fabric processing, specifically a color cotton twill double-sided calendering process and special equipment thereof. BACKGROUND

[0002] Color cotton twill double-sided calendering is a processing technology that makes the front and back of color cotton twill present smooth, flat and high gloss effects through special process. This treatment not only improves the visual aesthetics of the fabric, but also enhances its practical performance, and is widely used in high-end clothing, home decoration and industrial design fields.

[0003] After searching, such as patent: CN215628772U A cloth calendering machine, including preheating device, cloth pressing device, cooling device and winding device arranged in sequence, the preheating device includes preheating support, the upper end of the preheating support is fixedly installed with preheating box, the upper end of the preheating box is provided with steam outlet, the preheating box is connected with steam generator; The cloth pressing device includes cloth pressing support, the hot pressing roller is rotatably installed on the cloth pressing support; The cooling device includes cooling support, a plurality of cooling rollers are fixedly installed on the cooling support, and the cooling rollers are connected with a cooling mechanism; The winding device includes winding support, and the winding roller is installed on the winding support. The cloth calendering machine has the advantages of simple structure, convenient adjustment and use, and high efficiency;

[0004] At present, in the production process of color cotton twill, double-sided hot calendering process is the key link to improve the quality of the fabric. This process uses high-temperature hot calendering roller to treat the fabric on both sides, so that the cloth surface obtains lasting gloss and smooth hand feeling. However, it is found in actual production that the finishing agent (such as silicone oil, waterproof and down-proof coating) on the surface of the fabric, fiber debris and environmental dust and other impurities are easy to adhere to the roller surface under the action of high temperature and high pressure. If these residues are not removed in time, it will not only affect the heat transfer efficiency of the roller surface, but also cause uneven gloss, indentation and other quality problems in the subsequent products. SUMMARY

[0005] The purpose of the present application is to provide a color cotton twill double-sided calendering process and special equipment thereof to solve the problems raised in the background.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme: a color cotton twill double-sided calendering process, comprising the following steps:

[0007] S1: pretreatment, singeing, desizing / refining and pre-setting of color cotton twill;

[0008] S2: calendering treatment, using a calendering machine to calender the color cotton twill on both sides;

[0009] S3: post-treatment, anti-static treatment and inspection and division of the calendered color cotton twill;

[0010] Wherein, S2 further comprises:

[0011] S21: first, the pre-processed colored cloth is placed on the top of the preheating box, one end of which is unfolded to pass through two hot pressing rollers and several cooling rollers and is finally installed on the outer wall of the winding roller;

[0012] S22: then the colored cloth is wound by the winding roller, so that it passes through the two hot pressing rollers for double-sided hot pressing;

[0013] S23: when hot pressing, the first rotating shaft is driven to rotate by the motor, the rotation of the first rotating shaft drives the first gear and the third gear to rotate at the same time, when the first gear meshes with the second gear, the second gear is driven to rotate, the rotation of the second gear drives the rotation of the first reciprocating lead screw, when the first reciprocating lead screw rotates, the moving seat reciprocates, and the movement of the moving seat drives the scraper to move to remove the impurities on the outer wall of the hot pressing roller;

[0014] When the third gear meshes with the fourth gear, the fourth gear is driven to rotate, the rotation of the fourth gear drives the rotation of the second rotating shaft, the rotation of the second rotating shaft drives the rotation of the first bevel gear, the rotation of the first bevel gear drives the rotation of the second bevel gear, the rotation of the second bevel gear drives the rotation of the second reciprocating lead screw, the rotation of the second reciprocating lead screw drives the reciprocating movement of the connecting plate, and the movement of the connecting plate drives the movement of the scraper to remove the impurities on the outer wall of the scraper, so that the impurities fall into the collection box for collection;

[0015] S24: after hot pressing, the colored cloth is cooled by the cooling roller and then wound by the winding roller.

[0016] The special equipment for the double-sided calendering process of colored cloth comprises a preheating box, a cloth pressing support is fixedly installed on one side of the preheating box, a hot pressing roller is installed in the cloth pressing support, a cleaning assembly is arranged on one side of the hot pressing roller, a cooling support is fixedly installed on the side of the cloth pressing support away from the preheating box, a plurality of cooling rollers are uniformly installed in the cooling support, and a winding roller is rotatably installed at the tail of the cooling support.

[0017] The cleaning assembly comprises a scraper arranged on one side of the hot pressing roller, a moving seat is fixedly installed at the top end of the scraper, the moving seat is slidingly installed at the top of the cloth pressing support, a first reciprocating lead screw is threadedly connected to the inner wall of the moving seat, a second gear is fixedly installed at one end of the first reciprocating lead screw, the second gear is meshingly connected at the bottom end of the first gear, a first rotating shaft is fixedly installed on the inner wall of the first gear, a motor is connected to one end of the first rotating shaft, the motor is installed outside the cloth pressing support, and a impurity removal assembly is arranged in the cloth pressing support.

[0018] As a further technical solution of the present application, the tooth blocks outside the first gear are distributed in a fan shape.

[0019] As a further technical scheme of the present application, the impurity removal assembly comprises a scraper arranged in the pressing cloth support, one side of the scraper is provided with a connecting plate, the inner wall of the connecting plate is threadedly connected with a second reciprocating lead screw, one end of the second reciprocating lead screw is fixedly installed with a second bevel gear, one side of the second bevel gear is meshingly connected with a first bevel gear, one side of the first bevel gear is fixedly installed with a second rotating shaft, the outer wall of the second rotating shaft is fixedly installed with a fourth gear, one side of the fourth gear is meshingly connected with a third gear, and the third gear is fixedly installed on the outer wall of the first rotating shaft.

[0020] As a further technical scheme of the present application, the impurity removal assembly is provided with two groups, one side of the second bevel gear in the two groups of impurity removal assemblies is meshingly connected with a third bevel gear, and the two third bevel gears are fixedly connected through a third rotating shaft.

[0021] As a further technical scheme of the present application, the tooth blocks outside the third gear are distributed in a fan shape.

[0022] As a further technical scheme of the present application, the scraper is arranged obliquely.

[0023] As a further technical scheme of the present application, a collecting box is arranged below the scraper, and the collecting box is slidingly installed in the interior of the pressing cloth support.

[0024] As a further technical scheme of the present application, reversing rods are arranged on both sides of the scraper, and the two reversing rods are fixedly installed in the interior of the pressing cloth support.

[0025] A fourth rotating shaft is fixedly connected to the bottom end of the scraper, and the fourth rotating shaft is rotatably installed at the bottom of the connecting plate.

[0026] As a further technical scheme of the present application, a limiting block is fixedly installed on the outer wall of the fourth rotating shaft, the limiting block is slidingly installed on the inner wall of a limiting groove, and the limiting groove is arranged in the interior of the connecting plate.

[0027] The present application has the following advantages:

[0028] 1、Through the arrangement of the cleaning assembly, during work, the first rotating shaft is driven to rotate by the motor, the rotation of the first rotating shaft drives the first gear and the third gear to rotate at the same time, the first gear drives the second gear to rotate when the first gear meshes with the second gear, the rotation of the second gear drives the rotation of the first reciprocating lead screw, the first reciprocating lead screw drives the reciprocating movement of the moving seat when rotating, the movement of the moving seat drives the movement of the scraper to scrape off the impurities on the outer wall of the hot press roller, and the residues adhered to the outer wall of the hot press roller are timely removed, so as to ensure the preparation quality of the colored denim.

[0029] 2、The application is characterized in that the first rotating shaft drives the third gear to rotate synchronously when rotating, the rotation of the third gear drives the rotation of the fourth gear, the rotation of the fourth gear drives the rotation of the second rotating shaft, the rotation of the second rotating shaft drives the rotation of the first bevel gear, the rotation of the first bevel gear drives the rotation of the second bevel gear, the rotation of the second bevel gear drives the rotation of the second reciprocating screw rod, the rotation of the second reciprocating screw rod drives the reciprocating movement of the connecting plate, the movement of the connecting plate drives the movement of the scraper, the scraper contacts the sidewall of the scraper in the movement process, and the impurities adhered to the outer wall of the scraper are scraped off, so that the residual materials are prevented from being transferred to the fabric in the subsequent production, secondary pollution is avoided, and the cleaning effect of the hot press roller is optimized.

[0030] 3、The first gear and the second gear are engaged to drive the scraper to move once in the inside of the cloth pressing support, so that the outer wall of the scraper can be cleaned by the scraper regardless of which side the scraper stays in the cloth pressing support. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A flow chart of the double-sided calendering process of the application is shown in the figure;

[0032] Figure 2 A schematic diagram of the overall structure of the application is shown in the figure;

[0033] Figure 3 A schematic diagram of the cross section of the overall structure of the application is shown in the figure;

[0034] Figure 4 A schematic diagram of the structure of the application is shown in the figure; Figure 3 An enlarged schematic diagram of the structure at A of the application is shown in the figure;

[0035] Figure 5 A schematic diagram of the structure at the first reciprocating screw rod of the application is shown in the figure;

[0036] Figure 6 A schematic diagram of the structure at the first gear and the third gear of the application is shown in the figure;

[0037] Figure 7 A schematic diagram of the structure at the scraper of the application is shown in the figure;

[0038] Figure 8 A schematic diagram of the structure at the third rotating shaft of the application is shown in the figure;

[0039] Figure 9 A schematic diagram of the cross section of the structure at the connecting plate of the application is shown in the figure.

[0040] In the figure: 1, preheating box; 2, cloth pressing support; 3, hot pressing roller; 4, cooling support; 5, cooling roller; 6, winding roller; 7, motor; 8, first rotating shaft; 9, first gear; 10, second gear; 11, first reciprocating screw rod; 12, moving seat; 13, scraper; 14, collection box; 15, third gear; 16, fourth gear; 17, second rotating shaft; 18, first bevel gear; 19, second bevel gear; 20, second reciprocating screw rod; 21, connecting plate; 22, scraper plate; 23, third bevel gear; 24, third rotating shaft; 25, fourth rotating shaft; 26, limiting block; 27, limiting groove; 28, reversing rod. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0042] Embodiment one

[0043] As shown in the figure, in the embodiments of the present application, the double-sided calendering process of colored denim includes the following steps: Figure 1

[0044] S1: pretreatment, singeing, desizing / refining and pre-setting of colored denim;

[0045] S2: calendering treatment, double-sided calendering of colored denim using a calender;

[0046] S3: post-treatment, anti-static treatment and inspection and division of the colored denim after calendering;

[0047] S2 further includes:

[0048] S21: first, place the pretreated colored denim on the top of the preheating box 1, and expand one end of the colored denim to pass through two hot pressing rollers 3 and several cooling rollers 5 and finally be installed to the outer wall of the winding roller 6;

[0049] S22: then, wind the colored denim through the winding roller 6, so that it passes through two hot pressing rollers 3 for double-sided hot pressing;

[0050] ​S23: When hot pressing, the first rotating shaft 8 is driven to rotate by the motor 7, the rotation of the first rotating shaft 8 drives the first gear 9 and the third gear 15 to rotate simultaneously, when the first gear 9 meshes with the second gear 10, the second gear 10 is driven to rotate, the rotation of the second gear 10 drives the rotation of the first reciprocating lead screw 11, when the first reciprocating lead screw 11 rotates, the moving seat 12 moves reciprocatingly, the movement of the moving seat 12 drives the scraper 13 to move to scrape off the impurities on the outer wall of the hot pressing roller 3;

[0051] When the third gear 15 rotates and meshes with the fourth gear 16, the fourth gear 16 is driven to rotate, the rotation of the fourth gear 16 drives the rotation of the second rotating shaft 17, the rotation of the second rotating shaft 17 drives the rotation of the first bevel gear 18, the rotation of the first bevel gear 18 drives the rotation of the second bevel gear 19, the rotation of the second bevel gear 19 drives the rotation of the second reciprocating lead screw 20, the rotation of the second reciprocating lead screw 20 drives the reciprocating movement of the connecting plate 21, the movement of the connecting plate 21 drives the scraper 22 to move to scrape off the outer wall of the scraper 13, so that the impurities fall into the collecting box 14 for collection;

[0052] S24: After hot pressing, the colored cotton cloth is cooled by the cooling roller 5 and then wound by the winding roller 6.

[0053] Embodiment two

[0054] As Figures 2 to 9 shown in the embodiment of the application, the special equipment for colored cotton cloth double-sided calendering process comprises a preheating box 1, a cloth pressing support 2 is fixedly installed on one side of the preheating box 1, a hot pressing roller 3 is installed in the cloth pressing support 2, a cleaning assembly is arranged on one side of the hot pressing roller 3, a cooling support 4 is fixedly installed on the side, away from the preheating box 1, of the cloth pressing support 2, a plurality of cooling rollers 5 are uniformly installed in the cooling support 4, and a winding roller 6 is rotatably installed at the tail of the cooling support 4.

[0055] The cleaning assembly comprises a scraper 13 arranged on one side of the hot pressing roller 3, a moving seat 12 is fixedly installed at the top end of the scraper 13, the moving seat 12 is slidingly installed at the top of the cloth pressing support 2, a first reciprocating lead screw 11 is threadedly connected to the inner wall of the moving seat 12, a second gear 10 is fixedly installed at one end of the first reciprocating lead screw 11, a first gear 9 is meshingly connected to the bottom end of the second gear 10, a first rotating shaft 8 is fixedly installed in the inner wall of the first gear 9, a motor 7 is connected to one end of the first rotating shaft 8, the motor 7 is installed outside the cloth pressing support 2, and a foreign matter discharging assembly is arranged in the cloth pressing support 2.

[0056] The existing: CN215628772U discloses a cloth calender, which discloses the preheating box 1, the hot pressing roller 3, the cooling support 4, the cooling roller 5 and the winding roller 6 in the present application, which will not be described here;

[0057] The scraper 13 is a high-temperature-resistant scraper made of polytetrafluoroethylene (PTFE) or ceramic coating (temperature resistance ≥260℃);

[0058] The cleaning assembly can be symmetrically arranged in two groups to clean the sides of the two hot pressing rollers 3 away from each other.

[0059] In operation, the first rotating shaft 8 is driven to rotate by the motor 7, and the rotation of the first rotating shaft 8 drives the first gear 9 and the third gear 15 to rotate simultaneously. When the first gear 9 meshes with the second gear 10, the second gear 10 is driven to rotate, and the rotation of the second gear 10 drives the rotation of the first reciprocating lead screw 11. When the first reciprocating lead screw 11 rotates, it drives the moving seat 12 to move reciprocally. The movement of the moving seat 12 drives the scraper 13 to move and scrape off the impurities on the outer wall of the hot pressing roller 3. The residues adhered to the outer wall of the hot pressing roller 3 are removed in time, thereby ensuring the preparation quality of the colored denim.

[0060] As shown in Figure 4 , Figure 5 and Figure 6 , the tooth blocks outside the first gear 9 are distributed in a fan shape.

[0061] When the tooth blocks outside the first gear 9 mesh with the second gear 10, the second gear 10 is driven to rotate. When the tooth blocks outside the first gear 9 do not mesh with the second gear 10, the second gear 10 is not driven to rotate, thereby making the scraper 13 work intermittently, reducing the wear of the scraper 13 and the hot pressing roller 3, and helping to improve the service life of the equipment.

[0062] As shown in Figures 2 to 9 , the impurity removal assembly includes a scraper 22 arranged inside the pressing support 2. One side of the scraper 22 is provided with a connecting plate 21. The inner wall of the connecting plate 21 is threadedly connected with a second reciprocating lead screw 20. One end of the second reciprocating lead screw 20 is fixedly installed with a second bevel gear 19. One side of the second bevel gear 19 is meshingly connected with a first bevel gear 18. One side of the first bevel gear 18 is fixedly installed with a second rotating shaft 17. The outer wall of the second rotating shaft 17 is fixedly installed with a fourth gear 16. One side of the fourth gear 16 is meshingly connected with a third gear 15. The third gear 15 is fixedly installed on the outer wall of the first rotating shaft 8.

[0063] When the first rotating shaft 8 rotates, the third gear 15 rotates synchronously, the rotation of the third gear 15 drives the rotation of the fourth gear 16, the rotation of the fourth gear 16 drives the rotation of the second rotating shaft 17, the rotation of the second rotating shaft 17 drives the rotation of the first bevel gear 18, the rotation of the first bevel gear 18 drives the rotation of the second bevel gear 19, the rotation of the second bevel gear 19 drives the rotation of the second reciprocating lead screw 20, the rotation of the second reciprocating lead screw 20 drives the reciprocating movement of the connecting plate 21, the movement of the connecting plate 21 drives the movement of the scraper 22, the scraper 22 contacts the side wall of the scraper 13 in the movement process, and the impurities attached to the outer wall of the scraper 13 are scraped off, so that the residual materials are prevented from being transferred to the fabric in the subsequent production, secondary pollution is avoided, and the cleaning effect of the hot pressing roller 3 is optimized.

[0064] As shown in Figure 4 , Figure 5 and Figure 8 , the impurity removal assembly is provided with two groups, one side of the second bevel gear 19 in the two groups of impurity removal assemblies is engaged with the third bevel gear 23, and the two third bevel gears 23 are fixedly connected through the third rotating shaft 24.

[0065] Through the cooperation of the tooth number of the outer wall of the first gear 9 and the tooth number of the outer wall of the second gear 10, the first gear 9 and the second gear 10 are engaged to drive the scraper 13 to move once inside the cloth pressing support 2, so that the outer wall of the scraper 13 can be cleaned by the scraper 22 regardless of which side the scraper 13 stays in the cloth pressing support 2.

[0066] As shown in Figure 4 , Figure 5 and Figure 6 , the tooth blocks outside the third gear 15 are distributed in a fan shape.

[0067] The fan-shaped tooth blocks outside the third gear 15 are staggered with the fan-shaped gears outside the first gear 9;

[0068] When the fan-shaped tooth blocks outside the first gear 9 are separated from the second gear 10 and the scraper 13 stops moving to one side of the scraper 22, the third gear 15 is engaged with the fourth gear 16 to drive the scraper 22 to move and scrape off the impurities on the outer wall of the scraper 13, so that the two devices work intermittently and alternately.

[0069] As shown in Figure 4 , Figure 5 , Figure 8 and Figure 9 , the scraper 22 is arranged obliquely.

[0070] The oblique scraper 22 assists in chip removal, so that the scraped materials automatically slide to the collection point.

[0071] As shown in Figure 2 , Figure 3 and Figure 4As shown in the drawings, the lower part of the scraper 22 is provided with a collection box 14 which is slidingly installed in the interior of the pressing support 2.

[0072] The impurities are collected by the collection box 14, and subsequent unified treatment is facilitated.

[0073] As shown in the drawings, Figure 2 , Figure 3 and Figure 4 , the two sides of the scraper 22 are provided with reversing rods 28 which are fixedly installed in the interior of the pressing support 2.

[0074] The bottom end of the scraper 22 is fixedly connected with a fourth rotating shaft 25 which is rotatably installed at the bottom of the connecting plate 21.

[0075] When the scraper 22 moves to one end of the reversing rod 28, the reversing rod 28 is used to promote the rotation of the scraper 22, so as to change the inclination angle, thereby making the scraper 22 always inclined on one side of the scraper 13 along the direction of travel.

[0076] As shown in the drawings, Figure 9 the outer wall of the fourth rotating shaft 25 is fixedly installed with a limiting block 26 which is slidingly installed on the inner wall of a limiting groove 27 which is formed in the interior of the connecting plate 21.

[0077] The limiting block 26 is limited by the limiting groove 27, so as to limit the rotation angle of the scraper 22.

[0078] The side wall of the limiting block 26 is magnetically connected with the limiting groove 27, so as to ensure the stability of the inclination of the scraper 22 during scraping.

[0079] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A two-sided calendering process for corduroy fabric, characterized in that, It comprises the following steps: S1: pretreatment, singeing, desizing / refining and pre-setting of colored denim; S2: calendering treatment, double-sided calendering of colored denim using a calender; S3: post-treatment, anti-static treatment and inspection of the calendered colored denim; S2 further comprises: S21: first place the pretreated colored denim on the top of the preheating box (1), spread one end of it to pass through two hot calender rollers (3) and several cooling rollers (5) and finally be installed on the outer wall of the winding roller (6); S22: then wind the colored denim through the winding roller (6) to pass through the two hot calender rollers (3) for double-sided hot pressing; S23: when hot pressing, the first rotating shaft (8) is driven to rotate by the motor (7), the rotation of the first rotating shaft (8) drives the first gear (9) and the third gear (15) to rotate simultaneously, when the first gear (9) meshes with the second gear (10), the second gear (10) is driven to rotate, the rotation of the second gear (10) drives the rotation of the first reciprocating lead screw (11), when the first reciprocating lead screw (11) rotates, the moving seat (12) moves reciprocally, the movement of the moving seat (12) drives the scraper (13) to move to remove impurities on the outer wall of the hot calender roller (3); when the third gear (15) rotates and meshes with the fourth gear (16), the fourth gear (16) is driven to rotate, the rotation of the fourth gear (16) drives the rotation of the second rotating shaft (17), the rotation of the second rotating shaft (17) drives the rotation of the first bevel gear (18), the rotation of the first bevel gear (18) drives the rotation of the second bevel gear (19), the rotation of the second bevel gear (19) drives the rotation of the second reciprocating lead screw (20), the rotation of the second reciprocating lead screw (20) drives the reciprocating movement of the connecting plate (21), the movement of the connecting plate (21) drives the scraper (22) to move to remove impurities on the outer wall of the scraper (13) and fall into the collection box (14); S24: after hot pressing, the colored denim is cooled by the cooling roller (5) and then wound by the winding roller (6).

2. Specialized equipment for the process of double-sided calendering of colored denim, which is applicable to the process of double-sided calendering of colored denim according to claim 1, comprising a preheating box (1), characterized in that: One side of the preheating box (1) is fixedly installed with a cloth pressing support (2), the inside of the cloth pressing support (2) is installed with a hot calender roller (3), one side of the hot calender roller (3) is provided with a cleaning assembly, the side away from the preheating box (1) of the cloth pressing support (2) is fixedly installed with a cooling support (4), a plurality of cooling rollers (5) are uniformly installed in the inside of the cooling support (4), and a winding roller (6) is rotationally installed at the tail of the cooling support (4); The cleaning assembly comprises a scraper (13) arranged on one side of the hot pressing roller (3), a moving seat (12) is fixedly installed at the top end of the scraper (13), the moving seat (12) is slidingly installed at the top of the cloth pressing support (2), a first reciprocating lead screw (11) is threadedly connected to the inner wall of the moving seat (12), a second gear (10) is fixedly installed at one end of the first reciprocating lead screw (11), a first gear (9) is meshedly connected to the bottom end of the second gear (10), a first rotating shaft (8) is fixedly installed at the inner wall of the first gear (9), a motor (7) is connected to one end of the first rotating shaft (8), and the motor (7) is installed outside the cloth pressing support (2); and a impurity removal assembly is arranged in the cloth pressing support (2).

3. The special purpose apparatus for the double couching process of chintz according to claim 2, characterized in that: The tooth blocks outside the first gear (9) are distributed in a fan shape.

4. The special purpose apparatus for the double couching process of chintz according to claim 2, characterized in that: The impurity removal assembly comprises a scraper (22) arranged in the cloth pressing support (2), a connecting plate (21) is arranged on one side of the scraper (22), a second reciprocating lead screw (20) is threadedly connected to the inner wall of the connecting plate (21), a second bevel gear (19) is fixedly installed at one end of the second reciprocating lead screw (20), a first bevel gear (18) is meshedly connected to one side of the second bevel gear (19), a second rotating shaft (17) is fixedly installed at one side of the first bevel gear (18), a fourth gear (16) is fixedly installed at the outer wall of the second rotating shaft (17), a third gear (15) is meshedly connected to one side of the fourth gear (16), and the third gear (15) is fixedly installed at the outer wall of the first rotating shaft (8).

5. The special purpose apparatus for the double couching process of chintz according to claim 4, characterized in that: The impurity removal assembly is provided with two groups, and the second bevel gears (19) on the two groups of impurity removal assemblies are all meshedly connected with third bevel gears (23), and the two third bevel gears (23) are fixedly connected through a third rotating shaft (24).

6. The special purpose apparatus for the double couching process of chintz according to claim 4, characterized in that: The tooth blocks outside the third gear (15) are distributed in a fan shape.

7. The special purpose apparatus for the double couching process of chintz according to claim 4, characterized in that: The scraper (22) is arranged obliquely.

8. The special purpose apparatus for the double couching process of chintz according to claim 4, characterized in that: A collecting box (14) is arranged below the scraper (22), and the collecting box (14) is slidingly installed in the cloth pressing support (2).

9. The special purpose apparatus for the double couching process of chintz according to claim 4, characterized in that: Reversing rods (28) are arranged on both sides of the scraper (22), and the two reversing rods (28) are fixedly installed in the cloth pressing support (2). A fourth rotating shaft (25) is fixedly connected to the bottom end of the scraper (22), and the fourth rotating shaft (25) is rotatably installed at the bottom of the connecting plate (21).

10. The special purpose apparatus for the double couching process of chintz according to claim 9, characterized in that: A limiting block (26) is fixedly installed at the outer wall of the fourth rotating shaft (25), the limiting block (26) is slidingly installed at the inner wall of a limiting groove (27), and the limiting groove (27) is formed in the connecting plate (21).

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