Automatic printing and dyeing method and drying equipment for polyester printing and dyeing fabric

Abstract

The application provides a polyester printing and dyeing fabric automatic printing and dyeing method and drying equipment, and belongs to the technical field of fabric printing and dyeing processing. It solves the problem of waste of heat energy caused by poor drying method of existing polyester printing and dyeing fabric after printing and dyeing. The drying equipment comprises a support body, two groups of conveying wheels longitudinally arranged at the front end and tail end of the support body, a driving element fixed on the support body and used for driving the two groups of conveying wheels to rotate at the same speed in the same direction, a transverse sliding rail fixed transversely on the support body, a displacement block movably arranged transversely on the transverse sliding rail, a dryer fixed on the bottom of the displacement block, a synchronous driving assembly arranged on the support body and used for moving the displacement block to the raw material belt conveying direction, and a homing driving assembly used for quickly moving the displacement block to the initial position. Compared with the prior art, the drying equipment has good energy saving performance, can reduce the power cost under the premise of achieving the drying effect of the dryer, and reduces the heat energy loss.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fabric printing and dyeing, and relates to an automatic printing and dyeing method and drying equipment for polyester printing and dyeing fabric. BACKGROUND

[0002] Polyester fabric is a kind of chemical fiber clothing fabric used very much in daily life. After the weaving of polyester fabric is completed, many manufacturers will first print and dye the surface of the polyester fabric strip-shaped raw material with patterns, designs and texts, and then cut the fabric into unit cloth, and one unit cloth is used to cut into one piece of clothing. Because the coating after printing and dyeing does not dry immediately, a drying process is needed between printing and dyeing and cutting.

[0003] Because the printing and dyeing area of each piece of clothing is limited and basically concentrated in the middle part of the clothing, the printing and dyeing process of the strip-shaped raw material by the printing and dyeing machine also needs to be interrupted, and only the middle part of the unit cloth needs to be printed and dyed. After one printing and dyeing is completed, the next printing and dyeing is performed after the strip-shaped raw material is stepped forward by a distance.

[0004] For example, a polyester fabric strip-shaped raw material with a length of 100 m needs to be processed into unit cloth with a unit length of 1 m, and only the middle 0.3 m length position of the 1 m unit cloth needs to be printed and dyed. Therefore, from the 0 coordinate point (unit: m), the positions of 0.35-0.65, 1.35-1.65, 2.35-2.65, …, n.35-n.65 need to be printed and dyed, and the positions of 0-0.65, 0.65-1.35, 1.65-2.35, …, n.65-n+1.35 do not need to be printed and dyed.

[0005] Therefore, based on the above printing and dyeing conditions, if the drying machine for drying the polyester fabric strip-shaped raw material is fixed at a specific position, a large amount of energy will be wasted, because only the positions of 0.35-0.65, 1.35-1.65, 2.35-2.65, …, n.35-n.65 of the strip-shaped raw material passing through the drying machine need to be dried, and the rest of the strip-shaped raw material does not need to be dried. Therefore, the heat energy of the drying machine cannot be fully utilized, and there is a lot of invalid drying, which leads to a large amount of heat energy waste. SUMMARY

[0006] The present application aims at the problem of waste of heat energy caused by poor drying method of polyester printing and dyeing fabric after printing and dyeing, and provides a polyester printing and dyeing fabric automatic printing and dyeing method and drying equipment.

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

[0008] The present application aims at the problem of waste of heat energy caused by poor drying method of polyester printing and dyeing fabric after printing and dyeing, and provides a polyester printing and dyeing fabric automatic printing and dyeing method and drying equipment.

[0009] In the above-mentioned polyester printing and dyeing fabric automatic drying equipment, the synchronous driving assembly comprises two shaft bodies which are longitudinally rotatably arranged on the support body and above the rotation shafts of the two groups of conveying wheels, two first gears which are respectively fixedly sleeved on the two shaft bodies, two second gears which are respectively fixedly sleeved on the rotation shafts of the two groups of conveying wheels, driving wheels which are fixedly arranged at the end portions of the shaft bodies, a linkage belt which is fixedly sleeved on the two driving wheels, a pushed block which is fixedly arranged at the side edge of the displacement block, and a pushing block which is fixedly arranged outside the linkage belt, the adjacent first gear and the second gear are engaged, the pushing block pushes the pushed block in the direction of the raw material belt after the pushing block contacts the pushed block, the drying machine is just above the initial position at the front end of the printing part when the pushing block is just in contact with the pushed block during the rotation of the pushing block, and the transmission ratio formed by the first gear and the second gear makes the printing part on the raw material belt pass through the drying machine completely.

[0010] In the above-mentioned polyester printing and dyeing fabric automatic drying equipment, a freewheel is further rotatably arranged on the support body, and the freewheel is attached to the linkage belt to lengthen the length of the linkage belt.

[0011] In the above-mentioned polyester printing and dyeing fabric automatic drying equipment, the synchronous driving assembly has two groups which are respectively arranged on the two sides of the conveying wheels.

[0012] In the polyester printing and dyeing fabric automatic drying equipment, the homing drive assembly includes a cylindrical sleeve rod fixed on the support body and a spring sleeved on the sleeve rod, a displacement block is provided with a sleeve hole consistent with the sleeve rod, the displacement block is sleeved on the sleeve rod through the sleeve hole, the end of the transverse sliding rail is provided with a stop block, and the two ends of the spring are fixed on the displacement block and the support body respectively.

[0013] In the polyester printing and dyeing fabric automatic drying equipment, the transverse sliding rail has two, which are longitudinally staggered and connected with the two sides of the displacement block.

[0014] In the polyester printing and dyeing fabric automatic drying equipment, the bottom of the displacement block is provided with an assembly assembly, and the dryer is fixed on the bottom of the displacement block through the assembly assembly.

[0015] A printing and dyeing method using a polyester printing and dyeing fabric automatic drying equipment, characterized in that it comprises the following steps: selecting a strip-shaped polyester fabric raw material belt, feeding it into the printing and dyeing equipment through a conveying roller, printing and dyeing a printing pattern on it every certain distance, then feeding the polyester fabric raw material belt with the printing pattern into the drying equipment, the dryer in the drying equipment advancing synchronously with the polyester fabric raw material belt at a slower speed than the advancing speed of the polyester fabric raw material belt, when the dryer needs to complete the printing pattern from below the dryer, the dryer quickly returns to the original position, waits for the next printing pattern to pass, then the printing pattern that has completed the drying work is fed out of the drying equipment to a unit cutting device, and the polyester fabric raw material belt with the printing pattern is cut into a single independent polyester fabric unit belt.

[0016] Compared with the prior art, the automatic drying equipment has good energy saving property, can reduce the power cost under the premise of achieving the drying effect of the dryer, and reduces the heat energy loss. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is the first structure schematic view of the drying equipment after hiding the support body;

[0018] Fig. 2 is the second structure schematic view of the drying equipment after hiding the support body;

[0019] Fig. 3 is the third structure schematic view of the drying equipment after hiding the support body;

[0020] Fig. 4 is the fourth structure schematic view of the drying equipment after hiding the support body;

[0021] In the figure, 1, transport wheel; 2, transverse slide rail; 3, displacement block; 4, shaft body; 5, first gear; 6, second gear; 7, drive wheel; 8, linkage belt; 9, pushed block; 10, pushing block; 11, sleeve rod; 12, spring; 13, stop block; 14, assembled assembly; 15, raw material belt. DETAILED DESCRIPTION

[0022] The following is a specific embodiment of the present application and further describes the technical solutions of the present application in conjunction with the drawings, but the present application is not limited to these embodiments.

[0023] As Figs. 1-4 shown, the automatic drying equipment for polyester printing and dyeing fabric includes a support body, two groups of transport wheels 1 longitudinally rotatably arranged at the front end and tail end of the support body (if the front end and the rear end refer to the X-axis direction in the three-axis, that is, the transverse direction is the X-axis direction, the longitudinal direction is the Y-axis direction, and the vertical direction is the Z-axis direction), a driving element fixed on the support body and used to drive the two groups of transport wheels 1 to rotate in the same direction and at the same speed, a transverse slide rail 2 transversely fixed on the support body, a displacement block 3 transversely movably arranged on the transverse slide rail 2, a dryer fixed on the bottom of the displacement block 3, and the support body is provided with a synchronous driving assembly for moving the displacement block 3 to the raw material belt conveying direction and a homing driving assembly for quickly moving the displacement block 3 to the initial position.

[0024] The dryer is a common electric heating wire hair dryer on the market, which can be directly used in the present drying equipment.

[0025] The driving element is an electric motor with a speed changer, which is directly connected to the rotating shaft of one of the transport wheels 1. Because the driving element is a conventional item, it is hidden in the figure.

[0026] The concept of the present application is that the printing and dyeing part on the raw material belt advances at the same time as the dryer, but the advancing speeds of the two are different, the printing and dyeing part moves faster, and the dryer moves slower, so the printing and dyeing part will definitely pass through the dryer completely, and when the previous printing and dyeing part completely passes through the dryer, the dryer immediately returns to the initial position to welcome the next printing and dyeing part. Because the dryer advances with the printing and dyeing part, the power of the dryer can be appropriately reduced, unlike the case where the dryer is fixed at a specific position and the printing and dyeing part only passes through for an instant, so a large drying power needs to be provided to ensure that the drying function is completed in this instant. The energy-saving effect is achieved by this principle.

[0027] Although the synchronous driving assembly and the homing driving assembly to be designed also consume a certain amount of mechanical energy, compared with the heat energy that will soon flow out from the outside, the efficiency of heat energy is improved, which is a very good form.

[0028] In certain situations, this principle can also achieve the perfect state of drying efficiency, making the vacuum period of the dryer almost zero. For example, a 100-meter long material belt needs to be dried every 0.5 meters, such as 0.5-1 meters, 1.5-2 meters, 2.5-3 meters, and so on. If the maximum distance between the front and back of the dryer is also designed to be 0.5 meters (the initial position of the dryer is 0, and the maximum position is 0.5), and the speed of the dryer is adjusted to half the speed of the material belt, then from the first drying section:

[0029] When the 0.5-meter position of the material belt aligns with the 0 position of the dryer, both move forward at the same time. The material belt moves twice as fast as the dryer. When the material belt moves 1 meter (the 1.5-meter position of the material belt moves to the 0 position of the dryer), the dryer has moved 0.5 meters and reached its maximum position. The first drying section has moved 1 meter, and the dryer has only moved 0.5 meters. Therefore, the first drying section has completely passed through the dryer, and the first drying section has achieved full drying efficiency. The dryer then returns to its initial position of 0, and the dryer is immediately above the 1.5-meter position of the material belt, entering the state of the second drying section.

[0030] In this perfect working condition, the dryer consumes only a small amount of vacuum period for instant return (which can be ignored to some extent because it is in the same direction). Therefore, the power of the dryer can be reduced by one level. If the dryer is in a fixed position and requires 2-level power, now it can achieve the same drying efficiency with 1-level power.

[0031] Here is an example to illustrate this:

[0032] A wants to completely repeat the words to B. The first form is that A walks with B, B walks faster than A, although B still exceeds A, but the total time of A and B approaching is longer, A can slowly repeat the words while walking, although A speaks slowly, but the time when B completely exceeds A is enough to completely repeat the words; the second form is that A stands in one position, B directly walks past A's position, then A needs to speak at a very high speed to quickly repeat the words. "A" represents "dryer", "B" represents "drying section", and "speed of speech" represents "output power of dryer".

[0033] Through this concept, the power of the dryer can be reduced to achieve energy-saving effect.

[0034] But most of the use is not perfect, many cases of printing and dyeing part of the length is small, such as 1 m of unit length of 0 ~ 0.3 m position need to print and dye, and 0.3 ~ 1 m length does not need to print and dye, then the same using the above scheme, need to let the dryer homing after a period of time, can't immediately link up, but still can use lower level of power to complete the drying demand.

[0035] The synchronous drive assembly comprises two shaft bodies 4 longitudinally rotating arranged on the bracket body and above the rotation shafts where the two groups of conveying wheels 1 are located, two first gears 5 fixedly sleeved on the two shaft bodies 4 respectively, two second gears 6 fixedly sleeved on the rotation shafts where the two groups of conveying wheels 1 are located respectively, a drive wheel 7 fixedly arranged at the end of the shaft body 4, a linkage belt 8 fixedly sleeved on the two drive wheels 7, a pushed block 9 fixedly arranged at the side of the displacement block 3, and a pushing block 10 fixedly arranged outside the linkage belt 8. The adjacent first gear 5 and the second gear 6 are engaged, and the pushing block 10 will push the pushed block 9 to the direction of the raw material belt conveying after the pushing block 10 contacts the pushed block 9. The dryer is just above the initial position of the front end of the printing and dyeing part in the process of the pushing block 10 turning and just adhering to the pushed block 9. The transmission ratio formed by the first gear 5 and the second gear 6 makes the printing and dyeing part on the raw material belt pass through the dryer completely.

[0036] The description of the last sentence above may be difficult to understand simply, because the printing and dyeing part on the raw material belt that needs to be dried always moves forward, but the dryer also moves forward in this process. To make the dryer pass through the printing and dyeing part completely, the advancing speed of the dryer and the advancing speed of the printing and dyeing part need to have a certain ratio. In the initial state when the pushing block 10 just contacts the pushed block 9, the dryer is at the most front end of the printing and dyeing part, and in the terminal state when the pushing block 10 just separates from the pushed block 9, the dryer is at the most tail end of the printing and dyeing part. In simple terms, the advancing speed of the dryer is slow, and the advancing speed of the raw material belt is fast, or the formula can be expressed as follows:

[0037] The initial and terminal displacement of the dryer is S, and the length of the printing and dyeing part on the raw material belt that needs to be dried is X. Therefore, the displacement of the printing and dyeing part (i.e. the raw material belt) in this time is S+X, which ensures that the printing and dyeing part on the raw material belt can pass through the dryer completely.

[0038] Then the time taken by both is T, and the step speed of the dryer and the step speed of the raw material belt can be calculated by the formula. The step speed of the dryer = V(oven) = S / T, and the step speed of the raw material belt = V(belt) = (S+X) / T.

[0039] Then the transmission ratio of the first gear 5 and the second gear 6 can be calculated according to the formula of linear velocity and angular velocity.

[0040] The free wheel is arranged on the support body and is freely rotatable, and the free wheel is attached to the linkage belt 8 to lengthen the linkage belt 8, so that the dryer is just above the initial position of the front end of the printing and dyeing part when the pushing block 10 is just attached to the pushed block 9 during rotation.

[0041] The pushing block 10 also needs to meet specific requirements, and the pushing block 10 needs to work when the front end of the printing and dyeing part moves to the initial position of the dryer. Therefore, the length of the linkage belt 8 can be changed, and multiple pushing blocks 10 can be designed on the linkage belt 8 to achieve this function. The specific conditions are determined according to the length of the raw material belt, the distance between the printing and dyeing parts on the raw material belt, and the length of the printing and dyeing parts.

[0042] Therefore, the linkage belt 8 has two functions in the present application: one is the conventional linkage function, which synchronously drives the two transport wheels 1 to rotate in the same direction through the transmission of the linkage belt 8 after the power output by the driving element, and the stable feeding process is achieved; the second is to push the displacement body forward in the fixed stage to achieve the synchronization of the dryer and the printing and dyeing part mentioned above.

[0043] In addition, in order to improve the stability of the pushing block 10 in pushing the pushed block 9, the synchronous driving assembly is preferably provided with two groups and is arranged on both sides of the transport wheel 1.

[0044] The homing driving assembly includes a cylindrical sleeve rod 11 fixedly arranged on the support body and a spring 12 sleeved on the sleeve rod 11. The displacement block 3 is provided with a sleeve hole consistent with the sleeve rod 11, and the displacement block 3 is sleeved on the sleeve rod 11 through the sleeve hole. The end of the transverse slide rail 2 is provided with a stop block 13, and the two ends of the spring 12 are fixedly arranged on the displacement block 3 and the support body, respectively. When the pushing block 10 just separates from the pushed block 9, the spring 12 will push the displacement block 3 back to the initial position of the stop block 13.

[0045] The purpose of the synchronous driving assembly is to make the displacement block 3 return to the initial position immediately after moving to the maximum position. In order to achieve this function, the spring 12 is one of the best choices, and in addition to the spring 12, the use of magnets and other adsorption principles can also achieve this function.

[0046] When the pushing block 10 separates from the pushed block 9, the displacement block 3, which is no longer limited by the pushing block 10, will be immediately pushed back to the initial position of the stop block 13 under the action of the spring 12.

[0047] The transverse slide rail 2 has two, which are longitudinally staggered and connected to both sides of the displacement block 3.

[0048] The bottom of the displacement block 3 is provided with an assembly component 14, and the dryer is fixed to the bottom of the displacement block 3 through the assembly component 14.

[0049] A printing and dyeing method using polyester printing and dyeing fabric automatic drying equipment, comprising the following steps: selecting a strip-shaped polyester fabric raw material belt, feeding the belt into the printing and dyeing equipment through a conveying roller, printing and dyeing a printing pattern on the belt at a certain distance, then feeding the belt with the printing pattern into a drying equipment, a drying machine in the drying equipment advances synchronously with the belt at a speed slower than that of the belt, when the drying machine needs to complete the printing pattern from below, the drying machine quickly returns to the original position, waits for the next printing pattern to pass, then the printing pattern that has completed drying is sent out of the drying equipment to a unit cutting equipment, and the belt with the printing pattern is cut into single independent polyester fabric unit belts.

[0050] It should be understood that in the claims, the specification, and the like of the present application, all of the "comprises", "comprising", "includes" and / or "including" are open-ended transitional phrases that do not exclude the presence of other elements or steps.

[0051] The specific embodiments described herein are merely illustrative of the principles of this application. Numerous modifications and adaptations will be apparent to those skilled in the art without departing from the spirit and scope of the application.

Claims

1. An automated drying equipment for polyester printed and dyed fabrics, characterized in that: The system includes a support body, two sets of transport wheels longitudinally rotatably mounted at the front and rear ends of the support body, a drive element fixed to the support body for driving the two sets of transport wheels to rotate in the same direction and at the same speed, a transverse slide rail fixed to the support body, a displacement block movably mounted on the transverse slide rail, and a dryer fixed to the bottom of the displacement block. The support body is equipped with a synchronous drive assembly for moving the displacement block in the direction of the raw material conveyor belt and a return drive assembly for quickly moving the displacement block to its initial position. The synchronous drive assembly includes two shafts longitudinally rotatably mounted on the support body and located above the shafts of the two sets of transport wheels, two first gears respectively fixedly mounted on the two shafts, second gears respectively fixedly mounted on the shafts of the two sets of transport wheels, drive wheels fixedly mounted at the ends of the shafts, a linkage belt fixedly mounted on the two drive wheels, and a fixed... The push block is located on the side of the displacement block, and the push block is fixedly located on the outside of the linkage belt. The adjacent first gear and second gear mesh. After the push block contacts the push block, it will push it in the direction of raw material conveying. When the push block just comes into contact with the push block during the rotation process, the dryer is exactly above the initial position of the front end of the printing and dyeing part. The transmission ratio formed by the first gear and the second gear ensures that the printing and dyeing part on the raw material belt can pass through the dryer completely. The return drive component includes a cylindrical sleeve rod fixedly located on the support body and a spring sleeved on the sleeve rod. The displacement block has a sleeve hole that matches the sleeve rod. The displacement block is sleeved on the sleeve rod through the sleeve hole. The end of the transverse slide rail is provided with a stop block. The two ends of the spring are fixed to the displacement block and the support body, respectively. When the push block just comes off the push block, the spring will push the displacement block back to the stop block position.

2. The automated drying equipment for polyester printed and dyed fabrics according to claim 1, characterized in that: The support body is also equipped with a free wheel that rotates freely, and the free wheel is attached to the linkage belt to increase the length of the linkage belt.

3. The automated drying equipment for polyester printed and dyed fabrics according to claim 1, characterized in that: The synchronous drive assembly has two sets, which are respectively arranged on both sides of the transport wheel.

4. An automated drying equipment for polyester printed and dyed fabrics according to claim 1 or 2, characterized in that: The transverse slide rails are two in number, staggered longitudinally and connected to both sides of the displacement block.

5. An automated drying equipment for polyester printed and dyed fabrics according to claim 1 or 2, characterized in that: The bottom of the displacement block is provided with an assembly component, through which the dryer is fixed to the bottom of the displacement block.

6. A method for dyeing polyester fabrics using an automated drying equipment for polyester printed and dyed fabrics as described in claim 1 or 2, characterized in that, Includes the following steps: A strip of polyester fabric raw material is selected and fed into the printing and dyeing equipment via conveyor rollers. The printed pattern is applied at regular intervals. The polyester fabric raw material strip with the printed pattern is then fed into the drying equipment. The dryer in the drying equipment moves synchronously with the polyester fabric raw material strip at a slower speed than the polyester fabric raw material strip. When the dryer has completely passed under the drying machine, the dryer quickly returns to its original position to wait for the next printed pattern to pass. Then, the printed pattern that has completed the drying work is sent out of the drying equipment along with the polyester fabric raw material strip to the unit cutting equipment, where the polyester fabric raw material strip with the printed pattern is cut into individual polyester fabric unit strips.

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