Environmentally friendly cotton fabric printing and dyeing equipment and method

Abstract

The present invention relates to the technical field of fabric dyeing, and in particular to an environmentally friendly all-cotton fabric printing and dyeing device and method, comprising a placement frame, an expansion device, an extension device and a rotating device, wherein the placement frame is provided with a placement opening on the left and right side walls, and an expansion device is placed in both of the placement openings. Existing environmentally friendly all-cotton fabrics are usually dyed by a cold rolling dyeing method, which is simple to operate and has a large output. However, when printing and dyeing all-cotton fabrics, this method cannot stir the dyeing liquid of the all-cotton fabric, and the dyeing liquid is prone to precipitation, thereby reducing the dyeing effect of the all-cotton fabric. The lifting plate used in the environmentally friendly all-cotton fabric printing and dyeing equipment provided by the present invention cooperates with the stirring mechanism, which can reciprocate and squeeze the dyeing liquid when dyeing the all-cotton fabric, so that the dyeing liquid flows, ensuring that the dyeing liquid is evenly distributed, and the flowing dyeing liquid can better contact and assist with the all-cotton fabric.

Description

Technical Field

[0001] The invention relates to the technical field of fabric dyeing, and in particular to an environmentally friendly cotton fabric printing and dyeing device and method. Background Art

[0002] Pure cotton fabric refers to fabric with 100% cotton content. Pure cotton fabric is usually used to make clothing and bedding. There are many types of pure cotton fabric, including plain cloth, poplin, linen, twill, etc.

[0003] Existing environmentally friendly cotton fabrics are usually dyed by cold rolling dyeing. This method passes the cotton fabric through a dyeing tank filled with dyeing liquid, and is rolled by a cold rolling roller to adhere the dyeing liquid to the cotton fabric. This method is simple to operate and has a large output. However, when printing and dyeing the cotton fabric, this method cannot stir the dyeing liquid of the cotton fabric, and the dyeing liquid is prone to precipitation, thereby reducing the dyeing effect of the cotton fabric.

[0004] The above method also has the problem that the cotton fabric cannot be pulled on both sides when dyeing the cotton fabric. The cotton fabric is prone to shrink inward when moving and is prone to folding after being rolled by the cold roller, which affects the dyeing of the cotton fabric. Summary of the invention

[0005] Technical problem to be solved: The environmentally friendly cotton fabric printing and dyeing equipment and method provided by the present invention can solve the problems existing in the dyeing of the above-mentioned cotton fabric.

[0006] Technical solution: In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution, an environmentally friendly cotton fabric printing and dyeing equipment, including a placement frame, an expansion device, an extension device and a rotating device, the placement frame is provided with placement openings on the left and right side walls, the two placement openings are jointly provided with an expansion device, two extension devices are symmetrically installed on the expansion device, and a rotating device is symmetrically inserted into the upper end of the placement frame.

[0007] The expansion device includes a placement rod placed in the placement opening, a cylindrical frame is commonly installed between the left and right placement rods, a liquid inlet through hole is opened near the lower end of the cylindrical frame wall, and vertical sliding through holes are opened on the left and right side walls of the cylindrical frame, a U-shaped frame is commonly slidably connected in the left and right sliding through holes, and a lifting roller is commonly rotatably connected between the left and right side walls of the U-shaped frame, two auxiliary rollers are symmetrically arranged on the outer side of the lifting roller, the auxiliary roller is rotatably connected to the cylindrical frame through a roller frame, a toggle mechanism is commonly installed on the inner end surfaces of the left and right side walls of the cylindrical frame, a driving motor is installed near the upper end of the cylindrical frame wall, a cam is installed on the output shaft of the driving motor, a lifting disk is arranged on the right side of the cam, the lifting disk is installed on the output shaft of the driving motor, and a plurality of lifting blocks uniformly distributed in the circumferential direction are installed on the right end surface of the lifting disk, a connecting spring is installed between the middle section of the U-shaped frame and the cylindrical frame, a limiting hole is opened on the placement rod, a limiting rod is inserted in the limiting hole, two limiting plates are symmetrically sleeved on the front and rear ends of the limiting rod, and the limiting plate is fixedly connected to the placement frame.

[0008] The extending device includes a rectangular frame installed on the wall of the cylindrical frame, an opening in the rectangular frame runs through from top to bottom, transmission rollers are rotatably connected to the inner end surfaces of the front and rear frame walls of the rectangular frame, a guide groove is provided near the upper side of the inner end surface of the side wall of the rectangular frame away from the cylindrical frame, a clamping strip is slidably connected in the guide groove, an electric push rod is installed at the end of the clamping strip away from the cylindrical frame, the electric push rod is fixedly connected to the rectangular frame, two rectangular plates are symmetrically installed front and back on the upper ends of the left and right side walls of the front rectangular frame, a rotating column is rotatably connected to the rectangular plate, and extension mechanisms are installed on the opposite surfaces of two adjacent rotating columns on the front and rear side walls of the rectangular frame, a pushing block is arranged below the rotating column, the pushing block is installed on the end surface of the rectangular plate close to the extension mechanism, and a suction mechanism is installed on the upper end of the rectangular frame.

[0009] As a preferred technical solution of the present invention, the toggle mechanism includes a toggle frame installed on the inner wall of the cylindrical frame, a toggle membrane is installed on the inner end face of the toggle frame wall, a rectangular bar is installed on the upper end of the toggle membrane, a connecting rope is installed on the upper end of the rectangular bar, a T-shaped column is installed on the upper end of the connecting rope, the vertical section of the T-shaped column slides through the cylindrical frame wall, a reset spring is installed between the lower end of the horizontal section of the T-shaped column and the cylindrical frame, an L-shaped cylinder is installed on the upper end of the T-shaped column, and the horizontal section of the L-shaped cylinder slides with the lifting block.

[0010] As a preferred technical solution of the present invention, the extension mechanism includes a rotating disk installed at the end of the rotating column, and a plurality of guide through holes evenly distributed in the circumferential direction are opened on the rotating disk. A clamping column is slidably connected in the guide through hole, and an auxiliary circular plate is installed at one end of the clamping column close to the rectangular plate, and a clamping spring is installed between the auxiliary circular plate and the rotating disk. A guide column is installed at one end of the auxiliary circular plate close to the rectangular plate, and a ball is rotatably connected to one end of the guide column away from the auxiliary circular plate, and the ball is slidably matched with the pushing block.

[0011] As a preferred technical solution of the present invention, the suction mechanism includes a support plate symmetrically installed on the upper end of the rectangular frame, a suction cylinder is installed on the upper end of the support plate, a suction frame is arranged on the wall of the suction cylinder near the middle of the rectangular frame, a connecting hose is fixedly connected to the suction cylinder, the other ends of the two connecting hoses pass through the left side wall of the placement frame 1 and are jointly installed with an air pump, and the air pump is installed on the placement frame.

[0012] As a preferred technical solution of the present invention, the rotating device includes a U-shaped plug-in rod plugged into the upper end of the placement frame, and the middle section of the U-shaped plug-in rod is rotatably connected to a rotating roller.

[0013] As a preferred technical solution of the present invention, a drain pipe is installed on the rear end surface of the placement frame, and a valve is provided on the drain pipe.

[0014] As a preferred technical solution of the present invention, a plurality of evenly distributed rubber strips are installed at one end of the clamping strip away from the electric push rod.

[0015] As a preferred technical solution of the present invention, the pushing block is in an arc-shaped structure, and an inclined surface is provided at one end of the pushing block close to the suction mechanism.

[0016] In addition, the present invention also provides an environmentally friendly cotton fabric printing and dyeing method, which specifically includes the following steps: S1: manually pulling one end of the rolled cotton fabric through a rectangular frame located on the front side, an auxiliary roller located on the front side, a lifting roller, an auxiliary roller located on the rear side and a rectangular frame located on the rear side in sequence.

[0017] S2: manually place the cylindrical frame wound in step S1 into the placement opening on the placement frame through the placement rod, then pass the two limiting rods through the two limiting plates and insert them into the limiting holes on the corresponding placement rods, and then plug the two rotating devices into the placement frame.

[0018] S3: The dyeing liquid is manually injected into the placement frame, the cotton fabric is dyed by the dyeing liquid, the expansion device pushes the cotton fabric back and forth, and the extension device pulls the two sides of the cotton fabric.

[0019] S4: After the cotton fabric is dyed, the dyeing liquid in the placement frame is discharged and the dyeing is completed.

[0020] Beneficial effects: 1. The U-shaped frame used in the environmentally friendly cotton fabric printing and dyeing equipment provided by the present invention cooperates with the cam to pull the cotton fabric, so that the gap on the cotton fabric is enlarged, which is convenient for the dyeing liquid to adhere to the cotton fabric, thereby improving the dyeing effect of the cotton fabric.

[0021] 2. The lifting plate and the toggle mechanism used in the environmentally friendly cotton fabric printing and dyeing equipment provided by the present invention can push the dyeing liquid back and forth when dyeing the cotton fabric, so that the dyeing liquid flows, ensuring that the dyeing liquid is evenly distributed, and the flowing dyeing liquid can better contact with the cotton fabric.

[0022] 3. The extension mechanism used in the environmentally friendly cotton fabric printing and dyeing equipment provided by the present invention can pull the two sides of the cotton fabric outward when the cotton fabric is dyed, thereby preventing the cotton fabric from shrinking inward during the movement, thereby ensuring the dyeing effect of the cotton fabric and avoiding the phenomenon of different shades of color after the cotton fabric is dyed.

[0023] 4. The suction mechanism used in the environmentally friendly cotton fabric printing and dyeing equipment provided by the present invention can absorb dust and lint on the surface of the cotton fabric to avoid affecting the dyeing and dyeing liquid of the cotton fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure from the first viewing angle of the present invention.

[0026] Figure 2 It is a schematic diagram of the stereoscopic structure from a second viewing angle of the present invention.

[0027] Figure 3 It is the front view of the present invention.

[0028] Figure 4 It is a left side view of the present invention.

[0029] Figure 5 The present invention Figure 3 Sectional view of AA.

[0030] Figure 6 The present invention Figure 4 Cross-sectional view of BB.

[0031] Figure 7 The present invention Figure 5 Enlarged view of the N direction.

[0032] Figure 8 It is a three-dimensional structural schematic diagram of the rectangular plate, rotating column, pushing block and extension mechanism of the present invention.

[0033] Fig. 9 It is a schematic diagram of the working state of the present invention.

[0034] Fig.10 It is a structural schematic diagram of the L-shaped cylinder and the lifting plate of the present invention.

[0035] In the figure: 1, placing frame; 2, expansion device; 21, placing rod; 22, cylindrical frame; 23, U-shaped frame; 24, lifting roller; 25, auxiliary roller; 26, toggle mechanism; 261, toggle frame; 262, toggle film; 263, rectangular strip; 264, connecting rope; 265, T-shaped column; 266, reset spring; 267, L-shaped cylinder; 27, driving motor; 28, cam; 29, lifting plate; 20, connecting spring; 201, limit rod; 3, extension device; 3 1. Rectangular frame; 32. Transmission roller; 33. Electric push rod; 34. Clamping strip; 35. Rectangular plate; 36. Rotating column; 37. Pushing block; 38. Extension mechanism; 381. Rotating disk; 382. Clamping column; 383. Auxiliary circular plate; 384. Guide column; 385. Clamping spring; 39. Suction mechanism; 391. Support plate; 392. Suction cylinder; 393. Connecting hose; 394. Air pump; 4. Rotating device; 41. U-shaped plug rod; 42. Rotating roller. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0037] See also Figure 1-Figure 4 An environmentally friendly cotton fabric printing and dyeing device comprises a placement frame 1, an expansion device 2, an extension device 3 and a rotating device 4. The placement frame 1 is provided with placement openings on the left and right side walls, and the two placement openings are provided with the expansion device 2. Two extension devices 3 are symmetrically installed on the expansion device 2. The rotating device 4 is symmetrically inserted on the upper end of the placement frame 1. A drain pipe is installed on the rear end surface of the placement frame 1, and a valve is provided on the drain pipe.

[0038] See also Figure 5 and Figure 6The expansion device 2 includes a placement rod 21 placed in the placement opening, a cylindrical frame 22 is installed between the left and right placement rods 21, a liquid inlet hole is opened near the lower end of the cylindrical frame 22, and vertical sliding holes are opened on the left and right side walls of the cylindrical frame 22. A U-shaped frame 23 is slidably connected to the left and right sliding holes, and a lifting roller 24 is rotatably connected between the left and right side walls of the U-shaped frame 23. Two auxiliary rollers 25 are symmetrically arranged on the outer side of the lifting roller 24. The auxiliary rollers 25 are rotatably connected to the cylindrical frame 22 through a roller frame. The inner end surfaces of the left and right side walls of the cylindrical frame 22 A toggle mechanism 26 is installed together, a drive motor 27 is installed on the wall of the cylindrical frame 22 near the upper end, a cam 28 is installed on the output shaft of the drive motor 27, a lifting plate 29 is arranged on the right side of the cam 28, the lifting plate 29 is installed on the output shaft of the drive motor 27, a plurality of lifting blocks evenly distributed in the circumferential direction are installed on the right end face of the lifting plate 29, a connecting spring 20 is installed between the middle section of the U-shaped frame 23 and the cylindrical frame 22, a limiting hole is provided on the placing rod 21, a limiting rod 201 is inserted in the limiting hole, two limiting plates are symmetrically sleeved on the front and rear ends of the limiting rod 201, and the limiting plates are fixedly connected to the placing frame 1.

[0039] See also Figure 5 , Figure 7 and Figure 8 The extending device 3 includes a rectangular frame 31 installed on the frame wall of the cylindrical frame 22, the opening in the rectangular frame 31 runs through from top to bottom, the inner end surfaces of the front and rear frame walls of the rectangular frame 31 are rotatably connected with transmission rollers 32, the inner end surface of the side wall of the rectangular frame 31 away from the cylindrical frame 22 is provided with a guide groove near the upper side, a clamping strip 34 is slidably connected in the guide groove, an electric push rod 33 is installed at one end of the clamping strip 34 away from the cylindrical frame 22, the electric push rod 33 is fixedly connected to the rectangular frame 31, and a plurality of evenly distributed push rods are installed at one end of the clamping strip 34 away from the electric push rod 33 The rubber strip is located on the front side. Two rectangular plates 35 are symmetrically installed on the upper ends of the left and right side walls of the rectangular frame 31. A rotating column 36 is rotatably connected to the rectangular plate 35. Extension mechanisms 38 are installed on the opposite surfaces of the two adjacent rotating columns 36 on the front and rear side walls of the rectangular frame 31. A pushing block 37 is arranged below the rotating column 36. The pushing block 37 is installed on the end surface of the rectangular plate 35 close to the extension mechanism 38. A suction mechanism 39 is installed on the upper end of the rectangular frame 31. The pushing block 37 is an arc-shaped structure, and an inclined surface is arranged on the end of the pushing block 37 close to the suction mechanism 39.

[0040] See also Figure 5 The rotating device 4 includes a U-shaped plug-in rod 41 plugged into the upper end of the placement frame 1, and a rotating roller 42 is rotatably connected to the middle section of the U-shaped plug-in rod 41.

[0041] See also Figure 5-Figure 9During the specific operation, one end of the rolled cotton fabric is manually pulled to pass through the rectangular frame 31 at the front side, and then bypass the auxiliary roller 25, the lifting roller 24 and the auxiliary roller 25 at the rear side in sequence, and then pass through the rectangular frame 31 at the rear side and connect with the existing winding roller, and then the cylindrical frame 22 is placed in the placement opening on the placement frame 1 through the two placement rods 21, and then the two limiting rods 201 are passed through the two limiting plates and inserted into the limiting holes on the corresponding placement rods 21, so as to limit the placement rods 21, and further fix the cylindrical frame 22 on the placement frame 1 Then, two U-shaped plug-in rods 41 rotatably connected with rotating rollers 42 are inserted into the upper end of the placement frame 1, and the cotton fabric is tightly attached to the rotating rollers 42. When the cotton fabric passes through the rectangular frame 31, the extension mechanism 38 clamps the cotton fabric. Then, the uniformly stirred dyeing liquid is manually poured into the placement frame 1, and the existing winding roller, suction mechanism 39 and driving motor 27 are started at the same time. The existing winding roller performs intermittent winding work, and the driving motor 27 drives the cam 28 to rotate through the output shaft. The cam 28 drives the lifting roller 24 to perform reciprocating lifting motion through the U-shaped frame 23, and the lifting roller 24 drives the cotton The fabric reciprocates, and while the lifting roller 24 drives the cotton fabric to move upward, the winding roller stops winding the cotton fabric, and the electric push rod 33 squeezes and limits the cotton fabric in the rectangular frame 31 through the clamping strip 34. The rubber strip on the clamping strip 34 increases the friction between the clamping strip 34 and the cotton fabric, thereby realizing the function of pulling and expanding the cotton fabric when the lifting roller 24 drives the cotton fabric to move upward, which facilitates the attachment of the dyeing liquid to the cotton fabric. After the lifting roller 24 drives the cotton fabric to reset downward, the electric push rod 33 drives the clamping strip 34 to reset, and the winding roller continues When the pure cotton fabric is rolled up, the driving motor 27 drives the cam 28 to rotate through the output shaft, and also drives the lifting plate 29 to rotate. The lifting block on the lifting plate 29 drives the toggle mechanism 26 to toggle in the cylindrical frame 22. The toggle mechanism 26 pushes the dyeing liquid back and forth, thereby realizing the flow of the dyeing liquid around the pure cotton fabric, facilitating the dyeing liquid to better dye the pure cotton fabric, and avoiding the precipitation of the dyeing liquid, so that the dyeing liquid is evenly distributed, ensuring the dyeing effect of the pure cotton fabric. After dyeing is completed, the valve on the drain pipe of the placement frame 1 is opened to discharge the dyeing liquid.

[0042] See also Figure 5 , Figure 6 and Fig.10The toggle mechanism 26 includes a toggle frame 261 installed on the inner wall of the cylindrical frame 22, a toggle film 262 is installed on the inner end surface of the toggle frame 261, a rectangular bar 263 is installed on the upper end of the toggle film 262, a connecting rope 264 is installed on the upper end of the rectangular bar 263, a T-shaped column 265 is installed on the upper end of the connecting rope 264, the vertical section of the T-shaped column 265 slides through the wall of the cylindrical frame 22, a return spring 266 is installed between the lower end of the horizontal section of the T-shaped column 265 and the cylindrical frame 22, an L-shaped column 267 is installed on the upper end of the T-shaped column 265, and the horizontal section of the L-shaped column 267 slides with the lifting block. When working, the toggle mechanism 26 The membrane 262 is an existing rubber membrane. The output shaft of the driving motor 27 drives the lifting plate 29 to rotate. The multiple lifting blocks on the lifting plate 29 push the L-shaped cylinder 267 in turn. The L-shaped cylinder 267 is forced to drive the T-shaped column 265 to rise. The T-shaped column 265 drives the rectangular bar 263 to rise through the connecting rope 264, thereby driving the dial membrane 262 to bulge upward. After that, after the lifting block is separated from the L-shaped cylinder 267, the reset spring 266 drives the T-shaped column 265 to reset, and the dial membrane 262 is reset by its own elasticity. The upward protrusion and reset of the dial membrane 262 both drive the dyeing liquid to flow, thereby facilitating the dyeing of the pure cotton fabric.

[0043] See also Figure 5 , Figure 7 and Figure 8 The extension mechanism 38 includes a rotating disk 381 installed at the end of the rotating column 36, and a plurality of guide through holes evenly distributed in the circumferential direction are opened on the rotating disk 381. A clamping column 382 is slidably connected in the guide through hole. An auxiliary circular plate 383 is installed at one end of the clamping column 382 close to the rectangular plate 35. A clamping spring 385 is installed between the auxiliary circular plate 383 and the rotating disk 381. A guide column 384 is installed at one end of the auxiliary circular plate 383 close to the rectangular plate 35. A ball is rotatably connected to one end of the guide column 384 away from the auxiliary circular plate 383. The ball and the pushing block 37 are slidably matched. When working, when the cotton fabric passes through the corresponding extension mechanism 38 at the front and rear, the plurality of clamping columns 382 in contact with the pushing block 37 at the front and rear sides clamp the cotton fabric. The side is clamped. When the winding roller winds up the cotton fabric, the cotton fabric moves and drives multiple clamping columns 382 to move. When moving, multiple clamping columns 382 rotate through the rotating disk 381 and the rotating column 36, so that the two sides of the cotton fabric are extended outward to avoid the inward contraction of the cotton fabric when winding, thereby ensuring the efficiency of dyeing of the cotton fabric. At the same time, the rotating disk 381 drives the clamping columns 382 that are not in contact with the cotton fabric to move to the pushing block 37. The inclined surface on the pushing block 37 pushes the ball on the guide column 384. The guide column 384 is forced to drive the clamping columns 382 that are not in contact with the cotton fabric to contact the cotton fabric and clamp it, so that it is convenient for the extension mechanism 38 to continuously extend the two sides of the fabric outward.

[0044] See also Figure 5-Figure 7 The suction mechanism 39 includes a support plate 391 symmetrically installed on the upper end of the rectangular frame 31, a suction cylinder 392 is installed on the upper end of the support plate 391, a suction frame is provided on the wall of the suction cylinder 392 near the middle of the rectangular frame 31, a connecting hose 393 is fixedly connected to the suction cylinder 392, the other ends of the two connecting hoses 393 pass through the left side wall of the placement frame 1 and are jointly installed with an air pump 394, the air pump 394 is installed on the placement frame 1, when working, start the air pump 394, the air pump 394 draws out the air in the suction cylinder 392 through the connecting hose 393, the suction cylinder 392 removes the hair and dust remaining on the cotton fabric through the suction frame to avoid affecting the dyeing of the cotton fabric.

[0045] In addition, the present invention also provides a method for printing and dyeing environmentally friendly cotton fabrics, which specifically includes the following steps: S1: manually pulling one end of the rolled cotton fabric so that it first passes through the rectangular frame 31 located on the front side and then bypasses the auxiliary roller 25 located on the front side, the pulling roller 24 and the auxiliary roller 25 located on the rear side in turn, and then passes through the rectangular frame 31 located on the rear side and is connected to the existing winding roller.

[0046] S2: Place the cylindrical frame 22 in the placement opening on the placement frame 1 through two placement rods 21, then pass the two limiting rods 201 through the two limiting plates and insert them into the limiting holes on the corresponding placement rods 21, so as to limit the placement rods 21, and further fix the cylindrical frame 22 on the placement frame 1, and then insert two U-shaped plug-in rods 41 rotatably connected with rotating rollers 42 into the upper end of the placement frame 1, and the cotton fabric is tightly attached to the rotating rollers 42.

[0047] S3: Manually pour the uniformly stirred dyeing liquid into the placement frame 1, and simultaneously start the existing winding roller, the suction mechanism 39 and the driving motor 27, the existing winding roller performs intermittent winding work, the driving motor 27 drives the cam 28 to rotate through the output shaft, the cam 28 drives the cotton fabric to reciprocate through the U-shaped frame 23 and the lifting roller 24, while the lifting roller 24 drives the cotton fabric to move upward, the winding roller stops winding the cotton fabric, the electric push rod 33 squeezes and limits the cotton fabric in the rectangular frame 31 through the clamping strip 34, after the lifting roller 24 drives the cotton fabric to reset downward, the electric push rod 33 drives the clamping strip 34 After reset, the winding roller continues to wind up the cotton fabric, the cotton fabric moves and drives the multiple clamping columns 382 to move. When moving, the multiple clamping columns 382 rotate through the rotating disk 381 and the rotating column 36, thereby extending the two sides of the cotton fabric outward. While the driving motor 27 drives the cam 28 to rotate through the output shaft, the output shaft of the driving motor 27 drives the lifting disk 29 to rotate, and the lifting block on the lifting disk 29 drives the toggle mechanism 26 to toggle in the cylindrical frame 22. The toggle mechanism 26 pushes the dyeing liquid back and forth, thereby realizing the flow of dyeing liquid around the cotton fabric, which is convenient for the dyeing liquid to better dye the cotton fabric.

[0048] S4: After dyeing is completed, open the valve on the drain pipe of the placement frame 1 to drain the dyeing liquid.

[0049] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An environmentally friendly cotton fabric printing and dyeing device, comprising a placement frame, an expansion device and a rotating device, characterized in that: The left and right side walls of the placement frame are provided with placement openings, two extension devices are symmetrically installed on the expansion device, and a rotating device is symmetrically inserted on the upper end of the placement frame; The expansion device includes a placement rod placed in the placement opening, a cylindrical frame is installed between the two placement rods, a liquid inlet through hole is opened at the lower end of the cylindrical frame, vertical sliding through holes are opened on the left and right side walls of the cylindrical frame, a U-shaped frame is slidably connected in the two sliding through holes, a lifting roller is rotatably connected between the left and right side walls of the U-shaped frame, two auxiliary rollers rotatably installed in the cylindrical frame are symmetrically arranged on the outer side of the lifting roller, a toggle mechanism is installed on the inner end surfaces of the left and right side walls of the cylindrical frame, a driving motor is installed near the upper end of the cylindrical frame wall, a cam and a lifting disk are installed on the output shaft of the driving motor, a plurality of lifting blocks evenly distributed in the circumferential direction are installed on the right end surface of the lifting disk, a connecting spring is installed between the middle section of the U-shaped frame and the cylindrical frame, a limiting hole is opened on the placement rod, the limiting rod is inserted in the limiting hole, and the limiting plates sleeved on the front and rear ends of the limiting rod are fixedly connected to the placement frame; The toggle mechanism comprises a toggle frame installed on the inner wall of the cylindrical frame, a toggle membrane is installed on the inner end surface of the toggle frame wall, a connecting rope is installed on the upper end of the toggle membrane through a rectangular strip, a T-shaped column with a vertical section sliding through the cylindrical frame wall is installed on the upper end of the connecting rope, a return spring is installed between the lower end of the horizontal section of the T-shaped column and the cylindrical frame, an L-shaped cylinder is installed on the upper end of the T-shaped column, and the horizontal section of the L-shaped cylinder is slidably matched with the lifting block; The extension device comprises a rectangular frame installed on the wall of the cylindrical frame, transmission rollers are rotatably connected to the inner walls on both sides of the rectangular frame, a guide groove is provided near the upper side of the inner end surface of the side wall of the rectangular frame away from the cylindrical frame, a clamping strip is slidably connected in the guide groove, two rectangular plates are symmetrically installed on the upper ends of the left and right side walls of the front rectangular frame, a rotating column is rotatably connected to the rectangular plate, an extension mechanism is installed on the opposite surfaces of the front and rear rotating columns, a pushing block is provided on the opposite surface of the rectangular plate and below the rotating column, and a suction mechanism is installed on the upper end of the rectangular frame; The extension mechanism includes a rotating disk installed at the end of a rotating column, on which a plurality of clamping columns are evenly distributed in the circumference and slide through the rotating disk. An auxiliary circular plate is installed at one end of the clamping column close to the rectangular plate, a clamping spring is installed between the auxiliary circular plate and the rotating disk, a guide column is installed at one end of the auxiliary circular plate close to the rectangular plate, and a ball bearing that slides with the pushing block is rotatably connected at the end of the guide column.

2. The environmentally friendly cotton fabric printing and dyeing equipment according to claim 1 is characterized by: The suction mechanism includes a support plate symmetrically installed on the upper end of the rectangular frame, a suction cylinder is installed on the upper end of the support plate, a suction frame is provided on the wall of the suction cylinder near the middle of the rectangular frame, a connecting hose is fixedly connected to the suction cylinder, the other ends of the two connecting hoses pass through the left side wall of the placement frame and are jointly installed with an air pump, and the air pump is installed on the placement frame.

3. The environmentally friendly cotton fabric printing and dyeing equipment according to claim 1 is characterized by: The rotating device comprises a U-shaped plug-in rod plugged into the upper end of the placement frame, and a rotating roller is rotatably connected to the middle section of the U-shaped plug-in rod.

4. The environmentally friendly cotton fabric printing and dyeing equipment according to claim 1 is characterized by: A drain pipe is installed on the rear end surface of the placement frame, and a valve is arranged on the drain pipe.

5. The environmentally friendly cotton fabric printing and dyeing equipment according to claim 1 is characterized by: An electric push rod is installed at one end of the clamping strip away from the cylindrical frame, and the electric push rod is fixedly connected to the rectangular frame. A plurality of evenly distributed rubber strips are installed at one end of the clamping strip away from the electric push rod.

6. The environmentally friendly cotton fabric printing and dyeing equipment according to claim 1 is characterized by: The pushing block is in an arc-shaped structure, and an inclined surface is arranged on one end of the pushing block close to the suction mechanism.

7. The environmentally friendly cotton fabric printing and dyeing equipment according to claim 1 is characterized by: The method for printing and dyeing fabrics using the above-mentioned environmentally friendly cotton fabric printing and dyeing equipment specifically comprises the following steps: S1: One end of the rolled cotton fabric is manually pulled through the rectangular frame at the front, the auxiliary roller at the front, the pulling roller, the auxiliary roller at the rear and the rectangular frame at the rear in sequence; S2: manually placing the cylindrical frame wound in step S1 into the placement opening on the placement frame through the placement rods, then passing the two limiting rods through the two limiting plates and inserting them into the limiting holes on the corresponding placement rods, and then plugging the two rotating devices onto the placement frame; S3: The dyeing liquid is manually injected into the placement frame, the cotton fabric is dyed by the dyeing liquid, the expansion device pushes the cotton fabric back and forth, and the extension device pulls both sides of the full fabric; S4: After the cotton fabric is dyed, the dyeing liquid in the placement frame is discharged and the dyeing is completed.

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