Jeans fabric electrostatic spraying printing and dyeing equipment

Abstract

The invention discloses an electrostatic spraying and dyeing device for jeans fabric, which specifically relates to the technical field of jeans processing, and comprises a hanging chain, an electrostatic spraying and dyeing assembly and at least one group of supporting mechanisms, wherein the supporting mechanism is hung on the hanging chain, the electrostatic spraying and dyeing assembly is arranged at the bottom of the hanging chain, the supporting mechanism comprises a hollow tube, two short tubes are fixed at the bottom of the hollow tube, and an air bag unit is arranged at the bottom of each short tube, and the air bag unit comprises a plurality of alternately distributed mild steel bars and rubber sheets; the electrostatic spraying and dyeing assembly comprises a shell and a frame fixed at the bottom of the shell, two groups of air delivery mechanisms are arranged at the rear side of the frame, a nozzle is fixed at the front wall of the shell, the nozzle serves as a negative electrode, and the mild steel bar serves as a positive electrode, and the coating is sprayed and dyed on the jeans fabric under the action of static electricity. The invention realizes uniform electrostatic spraying and dyeing of jeans fabric.

Description

Technical Field

[0001] The invention relates to the technical field of jeans processing, in particular to jeans fabric electrostatic spraying and dyeing equipment. Background Art

[0002] The jeans spraying and dyeing process refers to spraying dyes directly on denim fabrics in the form of mist to form colorful patterns to achieve the purpose of dyeing and pattern printing. Compared with traditional dyeing methods, the jeans spraying and dyeing process allows the dyes and fabric fibers to be closely combined, which not only has bright colors, but also has a soft feel and is comfortable to wear. At the same time, the jeans spraying and dyeing process does not require the fabrics to be placed in the dyeing vat, eliminating the steps of water soaking and discharge, reducing water use, and has a significant saving effect.

[0003] The jeans spray printing and dyeing process uses electrostatic spraying equipment, such as a jeans electrostatic spray printing and dyeing equipment with prior art publication number CN112647213A, which uses the principle of electrostatic attraction, with a grounded object to be coated as the positive electrode, and a spray cup or spray plate connected to high voltage as the negative electrode. The atomized paint is negatively charged under the action of the high-voltage DC electric field and adsorbed on the positively charged substrate surface to discharge.

[0004] In the above-mentioned prior art, the jeans are put on a material receiving body equipped with a negative electrode wire, and the trouser legs are not fully stretched out, resulting in wrinkles, which easily leads to uneven spraying. Therefore, in the prior art, when spraying and dyeing jeans, it is usually necessary to use a support device to expand and prop up the jeans, such as a trouser support device with prior art publication number CN207023355U. Paradoxically, the material of the airbag that props up the pants in the existing support device is mainly rubber, nylon or polyester. There are very few movable ions or free electrons in the structure of these materials, so they are non-conductive insulators, so that while propping up the jeans, they do not meet the conditions for electrostatic spraying. Based on the above problems, the present invention provides an electrostatic spraying and dyeing equipment that can both prop up the jeans to achieve uniform spraying and meet the conditions for electrostatic spraying. Summary of the invention

[0005] The purpose of the invention is to provide electrostatic spraying and dyeing equipment for jeans fabric, so as to realize uniform electrostatic spraying and dyeing of jeans fabric.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solution: an electrostatic spraying and dyeing device for jeans fabrics, comprising a hanging chain, and further comprising:

[0007] Support mechanism, wherein a plurality of support mechanisms are provided, and the plurality of support mechanisms are all suspended on the suspension chain;

[0008] The electrostatic spraying and dyeing assembly is arranged at the bottom of the suspension chain, and the suspension chain conveys a plurality of supporting mechanisms to pass through the electrostatic spraying and dyeing assembly in sequence, so as to realize electrostatic spraying and dyeing of the jeans fabric on the supporting mechanisms;

[0009] The electrostatic spray printing and dyeing assembly comprises a housing and a frame fixed to the bottom end of the housing, and two sets of air delivery mechanisms are arranged at the rear side of the interior of the frame;

[0010] The gas delivery mechanism includes a connecting pipe, a gas pipe is fixed at the front side of the connecting pipe, a movable pipe is slidably arranged inside the gas pipe, and the front end of the movable pipe extends out of the front end of the gas pipe, the movable pipe and the gas outlet pipe are connected by a tension spring, a connecting pipe 1 is fixed at the front end of the movable pipe, and both sides of the connecting pipe 1 are processed into inclined surfaces;

[0011] The supporting mechanism includes a hollow tube, two short tubes are fixed at the bottom of the hollow tube, and an airbag unit is arranged at the bottom of each short tube. The two trouser legs of the jeans are put on the outside of the two sets of airbag units. The airbag units include a plurality of soft steel bars and a plurality of rubber sheets, and the soft steel bars and the rubber sheets are distributed alternately. The rear end of the hollow tube is fixedly connected with a second pipe connected to the first pipe.

[0012] When the supporting mechanism is connected to the air delivery mechanism on the left side, the air delivery mechanism fills the airbag unit with hot nitrogen to expand the airbag unit to prop up the jeans. When the supporting mechanism is connected to the air delivery mechanism on the right side, the hot nitrogen in the expanded airbag unit is absorbed by the air delivery mechanism to shrink the airbag unit, making it easier to take off the sprayed jeans.

[0013] A nozzle is fixed on the front wall inside the shell, and the nozzle is arranged between two sets of gas supply mechanisms. The nozzle is connected to electricity as a negative electrode. When the supporting mechanism transports it to the front side of the nozzle, multiple soft steel bars of the airbag unit are connected to electricity as positive electrodes, and the paint is sprayed and dyed on the jeans fabric under the action of static electricity.

[0014] Preferably, a bottom block is fixed to the bottom end of the airbag unit, and a flange 1 is fixed to the top end of the airbag unit, and a flange 2 is fixed to the bottom end of the short tube. Flange 1 and flange 2 are fixed so that the short tube is connected to the inside of the airbag unit.

[0015] Preferably, the shell is provided with an opening penetrating the shell from left to right to facilitate the passage of the supporting mechanism;

[0016] A negative pressure box and a positive pressure box are provided in the frame, the negative pressure box and the positive pressure box are filled with nitrogen, and a heater for heating the nitrogen is provided in the positive pressure box, the connecting pipe of the left gas transmission mechanism is connected to the positive pressure box through an air supply pipe, and the connecting pipe of the right gas transmission mechanism is connected to the negative pressure box through an air suction pipe;

[0017] An air pump is provided between the negative pressure box and the positive pressure box in the frame. The air pump is used to draw nitrogen in the negative pressure box into the positive pressure box, thereby reducing the pressure in the negative pressure box and increasing the pressure in the positive pressure box, making it easier for the two sets of air delivery mechanisms to inflate or inhale the airbag unit.

[0018] Preferably, a valve is provided in the second pipe, the valve comprises a fixing frame fixed to the inner wall of the second pipe, and a sealing plate is provided on one side of the fixing frame close to the hollow tube, the four corners of the sealing plate are connected to the four corners of the fixing frame by elastic members, and there is a gap between the outer wall of the sealing plate and the inner wall of the second pipe, so that nitrogen can enter the hollow tube along the second pipe;

[0019] The sealing plate is tightly attached to the fixed frame under the elastic force of the elastic member to seal the second pipe, and a sealing gasket is embedded on the side of the sealing plate close to the fixed frame. When the first pipe enters the second pipe, the sealing plate is pushed open, and the first pipe is connected to the second pipe.

[0020] Preferably, an electric valve is fixed on the connecting pipe, and a touch switch for controlling the opening and closing of the electric valve is fixed on one side of the connecting pipe. When the connecting pipe one enters the connecting pipe two, the rear end of the connecting pipe two squeezes the touch switch to open the electric valve, so that the airbag unit is connected to the negative pressure box or the positive pressure box through the short tube, the hollow tube, the connecting pipe two, the connecting pipe one, the movable tube, the air pipe, the connecting pipe, the air supply pipe or the air suction pipe.

[0021] Preferably, a docking plate is fixed on the inner front wall of the suspension chain at the top position of the nozzle, and a slide groove is provided on the side of the docking plate close to the supporting mechanism. The docking plate is divided into three parts. The two side parts of the docking plate are insulating plates, and the middle part of the docking plate is a conductive plate, and the conductive plate of the docking plate is connected to the negative pole of the power supply.

[0022] Preferably, an insulating outer frame is fixed to the front end of the hollow tube, and a metal block is fixed to the front end of the insulating outer frame via two telescopic rods, and both the telescopic rods and the metal block are conductive;

[0023] An insulating tube is fixed on the top of the hollow tube, and a pulley block slidably connected to the suspension chain slide rail is fixed on the end of the insulating tube away from the hollow tube. A conductive member is fixed on the suspension chain slide rail. The conductive member and the roller on the pulley block are both conductive, and the roller on the pulley block is always in contact with the conductive member. The conductive member, the roller on the pulley block, the telescopic rod, the metal block and the soft steel bar are electrically connected in sequence through wires. The wires can be hidden in the insulating tube and the insulating outer frame. The conductive member is connected to the positive pole of the power supply.

[0024] When the metal block enters the shell and slides along the slide groove of the docking plate, when the metal block moves to contact the conductive plate of the docking plate, the circuit consisting of the positive electrode of the power supply, the conductive part, the roller on the pulley block, the telescopic rod, the metal block, the soft steel bar, the conductive plate of the docking plate, and the negative electrode of the power supply is connected. At this time, the soft steel bar is connected to the power as the positive electrode, which generates electrostatic effect with the nozzle as the negative electrode, and is used for electrostatic spraying and dyeing of jeans fabric.

[0025] Preferably, the telescopic rod includes an outer rod, an inner rod and a compression spring, the inner rod is arranged inside the outer rod and extends out of the front end of the outer rod, the inner wall of the outer rod is connected to the rear end of the inner rod through the compression spring, the rear end of the outer rod is fixed to the front end of the insulating outer frame, and the front end of the inner rod is fixed to the rear end of the metal block.

[0026] Preferably, one side of the metal block close to the docking plate is processed into inclined surface one, and one side of the slide groove is processed into inclined surface two matching with inclined surface one, so as to facilitate the metal block to enter the slide groove and push the inner rod to squeeze the compression spring, so that the metal block is tightly attached to the conductive plate of the docking plate through the elastic force to avoid short circuit.

[0027] Preferably, two guide plates distributed up and down are fixed inside the shell, and the two guide plates are respectively located at the top and bottom of the pipe one. The pipe two on the support mechanism inside the shell slides between the two guide plates to guide the pipe two, so as to facilitate the docking of the pipe two with the pipe one.

[0028] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0029] 1. The two legs of jeans are respectively put on the two airbag units of the support mechanism. The support mechanism enters the electrostatic spraying and dyeing assembly and first connects with the air supply mechanism on the left to fill the airbag unit with hot nitrogen. The airbag unit expands rapidly to prop up the jeans. At the same time, the circuit where the soft steel bar on the airbag unit is located is connected. The soft steel bar acts as a positive electrode and generates electrostatic effect with the nozzle as a negative electrode. The paint sprayed by the nozzle is negatively charged under the action of electrostatics and adsorbed on the jeans fabric, realizing uniform electrostatic spraying and dyeing of the jeans fabric.

[0030] At the same time, the hot nitrogen in the airbag unit is used to dry the painted jeans, improving the drying efficiency of the paint.

[0031] 2. When the supporting mechanism is docked with the air supply mechanism on the right, the hot nitrogen in the airbag unit is discharged and contracts. At the same time, the circuit where the soft steel bar on the airbag unit is located is disconnected, making it easier for personnel to remove the jeans after spraying and dyeing, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is the overall structure diagram of the present invention;

[0033] Figure 2 This is a back structural diagram of the electrostatic spraying and dyeing assembly of the present invention;

[0034] Figure 3 This is a diagram showing the internal structure of the housing of the present invention;

[0035] Figure 4 It is a structural diagram of the supporting mechanism when the airbag unit of the present invention is contracted;

[0036] Figure 5 is a cross-sectional view of the support mechanism of the present invention;

[0037] Figure 6 is a structural diagram of the airbag unit of the present invention;

[0038] Figure 7 It is a structural diagram of the support mechanism when the airbag unit of the present invention is expanded;

[0039] Figure 8 It is a side view of the housing, gas delivery mechanism and support mechanism of the present invention;

[0040] Fig. 9 It is a side cross-sectional view of the gas delivery mechanism and the support mechanism of the present invention;

[0041] Fig.10 This is a structural diagram of the second connecting pipe, valve, air pipe, movable pipe and the first connecting pipe of the present invention;

[0042] Fig.11 It is a top view of the second connecting pipe of the present invention when the connecting pipe is not connected to the first connecting pipe;

[0043] Fig.12 It is a top view of the second connecting pipe of the present invention when it is connected with the first connecting pipe;

[0044] Fig.13 It is a structural diagram of the conductive plate of the docking plate of the present invention.

[0045] Description of reference numerals:

[0046] 1 hanging chain;

[0047] 2 electrostatic spraying and dyeing components, 21 housing, 22 frame, 23 air transmission mechanism, 24 negative pressure box, 25 positive pressure box, 26 air pump, 27 air supply pipe, 28 air suction pipe, 29 nozzle;

[0048] 231 connecting pipe, 232 air pipe, 233 movable pipe, 234 tension spring, 235 connecting pipe 1, 236 electric valve, 237 touch switch;

[0049] 3 supporting mechanism, 31 hollow tube, 32 short tube, 33 airbag unit, 34 bottom block, 35 pipe 2, 36 valve, 37 insulating outer frame, 38 telescopic rod, 39 metal block, 310 inclined surface 1, 311 flange 1, 312 flange 2;

[0050] 331 mild steel bar, 332 rubber sheet;

[0051] 361 fixed frame, 362 sealing plate, 363 elastic member;

[0052] 381 outer rod, 382 inner rod, 383 compression spring;

[0053] 4 docking plate, 41 slide groove, 42 inclined surface 2;

[0054] 5 insulating tube, 6 pulley block, 7 suspension chain slide rail, 8 conductive part, 9 guide plate. DETAILED DESCRIPTION

[0055] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0056] The present invention provides Figure 1 The electrostatic spraying and dyeing equipment for jeans fabric shown includes a hanging chain 1, a supporting mechanism 3 on which jeans are hung, and an electrostatic spraying and dyeing assembly 2. There are multiple supporting mechanisms 3, and the multiple supporting mechanisms 3 are all hung on the hanging chain 1. The electrostatic spraying and dyeing assembly 2 is arranged at the bottom of the hanging chain 1. The hanging chain 1 transports the multiple supporting mechanisms 3 to pass through the electrostatic spraying and dyeing assembly 2 in sequence, so as to realize electrostatic spraying and dyeing of the jeans fabric on the supporting mechanisms 3.

[0057] Specifically, Figure 2-3 As shown, the electrostatic spray printing and dyeing assembly 2 includes a shell 21 and a frame 22 fixed to the bottom end of the shell 21. The shell 21 is provided with an opening that penetrates the shell 21 from left to right to facilitate the passage of the support mechanism 3. Two sets of air delivery mechanisms 23 are provided on the rear side of the frame 22.

[0058] like Figure 8-10 As shown, the gas delivery mechanism 23 includes a connecting pipe 231, a gas pipe 232 is fixed to the front side of the connecting pipe 231, a movable pipe 233 is slidably arranged inside the gas pipe 232, and the front end of the movable pipe 233 extends to the front end of the gas outlet pipe 232, the movable pipe 233 and the gas outlet pipe 232 are connected by a tension spring 234, a connecting pipe 235 is fixed to the front end of the movable pipe 233, and both sides of the connecting pipe 235 are processed into inclined surfaces;

[0059] like Figure 4-7 As shown, the support mechanism 3 includes a hollow tube 31, two short tubes 32 are fixed at the bottom end of the hollow tube 31, and an airbag unit 33 is arranged at the bottom of each short tube 32, a bottom block 34 is fixed at the bottom end of the airbag unit 33, and a flange 1 311 is fixed at the top of the airbag unit 33, and a flange 2 312 is fixed at the bottom end of the short tube 32, and the flange 1 311 and the flange 2 312 are fixed so that the short tube 32 is connected to the inside of the airbag unit 33, and the two trouser legs of the jeans are put on the outside of the two groups of airbag units 33, and the airbag unit 33 includes a plurality of mild steel strips 331 and a plurality of rubber sheets 332, and mild steel is carbon steel with a carbon content of less than 0.25%, and its strength and hardness are low, and its plasticity and toughness are good, and the mild steel strips 331 and the rubber sheets 332 are distributed alternately, and the rear end of the hollow tube 31 is fixedly connected with a pipe 2 35 connected with the pipe 1 235;

[0060] When the support mechanism 3 is transported to the docking position with the air delivery mechanism 23 on the left side, the air delivery mechanism 23 fills the airbag unit 33 with hot nitrogen to expand the airbag unit 33 to prop up the jeans. When the support mechanism 3 is transported to the docking position with the air delivery mechanism 23 on the right side, the hot nitrogen in the expanded airbag unit 33 is absorbed by the air delivery mechanism 23 to shrink the airbag unit 33, so that the jeans after spraying can be easily removed.

[0061] A nozzle 29 is fixed to the front wall inside the shell 21, and the nozzle 29 is arranged between the two groups of air delivery mechanisms 23. The nozzle 29 is powered on as a negative electrode. When the support mechanism 3 delivers to the front side of the nozzle 29, the multiple soft steel bars 331 of the airbag unit 33 are powered on as a positive electrode. A paint box for supplying paint to the nozzle 29 is provided inside the frame 22. By pumping the paint into the nozzle 29, the paint is sprayed and printed on the jeans fabric under the action of static electricity.

[0062] The power connection design of the airbag unit 33 is as follows: Figure 3-5 , Figure 7-9 and Fig.13 As shown, a docking plate 4 is fixed on the front wall of the suspension chain 1 at the top of the nozzle 29, and a slide groove 41 is provided on one side of the docking plate 4 close to the support mechanism 3. The docking plate 4 is divided into three parts. The two side parts of the docking plate 4 are insulating plates, and the middle part of the docking plate 4 is a conductive plate. The conductive plate of the docking plate 4 is connected to the negative pole of the power supply. An insulating outer frame 37 is fixed to the front end of the hollow tube 31, and a metal block 39 is fixed to the front end of the insulating outer frame 37 through two telescopic rods 38. Both the telescopic rods 38 and the metal block 39 are conductive. The top of the hollow tube 31 An insulating tube 5 is fixed at the end, and a pulley block 6 slidably connected to a suspension chain slide rail 7 is fixed at one end of the insulating tube 5 away from the hollow tube 31, a conductive member 8 is fixed on the suspension chain slide rail 7, the conductive member 8 and the roller on the pulley block 6 are both conductive, and the roller on the pulley block 6 is always in contact with the conductive member 8, the conductive member 8, the roller on the pulley block 6, the telescopic rod 38, the metal block 39 and the soft steel bar 331 are electrically connected in sequence through wires, the wires can be hidden in the insulating tube 5 and the insulating outer frame 37, and the conductive member 8 is connected to the positive pole of the power supply;

[0063] When the metal block 39 enters the housing 21 and slides along the slide groove 41 of the docking plate 4, when the metal block 39 moves to contact the conductive plate of the docking plate 4, the circuit consisting of the positive electrode of the power supply, the conductive member 8, the roller on the pulley block 6, the telescopic rod 38, the metal block 39, the soft steel bar 331, the conductive plate of the docking plate 4, and the negative electrode of the power supply is connected. At this time, the soft steel bar 331 is powered as a positive electrode, and generates an electrostatic effect with the nozzle 29 as a negative electrode, which is used for electrostatic spraying and dyeing of jeans fabric.

[0064] It is worth noting that in order to improve safety, the present invention needs to take additional insulation measures to avoid the situation where the leaking parts of the equipment are electrified and cause electric shock to the workers; and dust removal measures must be taken for the escaped paint to prevent the paint from endangering the health of the workshop workers.

[0065] Furthermore, in order to avoid the metal block 39 and the docking plate 4 from not contacting each other and causing a circuit breaker, as shown in FIG. Figure 5 and Fig.12 As shown, the telescopic rod 38 includes an outer rod 381, an inner rod 382 and a compression spring 383. The inner rod 382 is arranged inside the outer rod 381 and extends out of the front end of the outer rod 381. The inner wall of the outer rod 381 is connected to the rear end of the inner rod 382 through the compression spring 383. The rear end of the outer rod 381 is fixed to the front end of the insulating outer frame 37, and the front end of the inner rod 382 is fixed to the rear end of the metal block 39. The side of the metal block 39 close to the docking plate 4 is processed into an inclined surface 1 310, and the side of the slide groove 41 is processed into an inclined surface 2 42 adapted to the inclined surface 1 310, so that the metal block 39 can enter the slide groove 41 and push the inner rod 382 to squeeze the compression spring 383. The metal block 39 is tightly attached to the conductive plate of the docking plate 4 through the elastic force to avoid short circuit.

[0066] In order to support the jeans during electrostatic spraying and achieve uniform spraying, Figure 2-9 As shown, a negative pressure box 24 and a positive pressure box 25 are provided in the frame 22, and the negative pressure box 24 and the positive pressure box 25 are filled with nitrogen. Nitrogen is a colorless, odorless, non-toxic gas, non-flammable, not easy to cause explosion and pollute the environment, and can expand rapidly at high temperatures. Therefore, a heater for heating the nitrogen is provided in the positive pressure box 25, and the heater heats the nitrogen in the positive pressure box 25 to above 150°C, so that the nitrogen expands rapidly at high temperatures, further increasing the pressure in the positive pressure box 25 (in actual use, a pressure relief valve is installed on the positive pressure box 25 to avoid excessive air pressure in the positive pressure box 25 and improve safety), which is convenient for quickly inflating the airbag unit 33. At the same time, the hot nitrogen in the airbag unit 33 can also quickly dry the jeans after spraying; the connecting pipe 231 of the left air delivery mechanism 23 is connected to the positive pressure box 25 through the air supply pipe 27, and the connecting pipe 231 of the right air delivery mechanism 23 is connected to the negative pressure box 24 through the suction pipe 28;

[0067] An air pump 26 is provided at a position between the negative pressure box 24 and the positive pressure box 25 in the frame 22. The air pump 26 is used to draw nitrogen in the negative pressure box 24 into the positive pressure box 25, so that the pressure in the negative pressure box 24 is reduced and the pressure in the positive pressure box 25 is increased, making it convenient for the two sets of air supply mechanisms 23 to inflate or inhale the airbag unit 33.

[0068] And, if Figure 9-12As shown, a valve 36 is provided in the second pipe 35, and the valve 36 includes a fixing frame 361 fixed to the inner wall of the second pipe 35, and a sealing plate 362 is provided on the side of the fixing frame 361 close to the hollow tube 31, and the four corners of the sealing plate 362 are connected to the four corners of the fixing frame 361 through elastic members 363, and there is a gap between the outer wall of the sealing plate 362 and the inner wall of the second pipe 35, so that nitrogen can enter the hollow tube 31 along the second pipe 35; the sealing plate 362 is tightly attached to the fixing frame 361 under the elastic force of the elastic member 363 to seal the second pipe 35, and a sealing gasket for sealing is embedded on the side of the sealing plate 362 close to the fixing frame 361, and when the first pipe 235 enters the second pipe 35, the sealing plate 362 is pushed open, and the first pipe 235 is connected with the second pipe 35.

[0069] Moreover, an electric valve 236 is fixed on the connecting pipe 231, and a touch switch 237 for controlling the opening and closing of the electric valve 236 is fixed on one side of the connecting pipe 1 235 (in actual use, a partition can be fixed in the outer shell 21 to separate the electric valve 236 from the airbag unit 33 and the nozzle 29 to prevent paint from being sprayed onto the electric valve 236 and causing damage to the electric valve 236). When the connecting pipe 1 235 enters the connecting pipe 2 35, the rear end of the connecting pipe 2 35 squeezes the touch switch 237 to open the electric valve 236, so that the airbag unit 33 is connected to the negative pressure box 24 or the positive pressure box 25 through the short tube 32, the hollow tube 31, the connecting pipe 2 35, the connecting pipe 1 235, the movable tube 233, the air pipe 232, the connecting pipe 231, the air supply pipe 27 or the air intake pipe 28.

[0070] Furthermore, in order to accurately connect the second pipe 35 with the first pipe 235, as Figure 3 , Figure 8 and Fig. 9 As shown, two guide plates 9 distributed up and down are fixed inside the shell 21, and the two guide plates 9 are respectively located at the top and bottom of the pipe 1 235. The pipe 2 35 on the supporting mechanism 3 inside the shell 21 slides between the two guide plates 9 to guide the pipe 2 35, so as to facilitate the accurate docking of the pipe 2 35 with the pipe 1 235.

[0071] It is worth noting that the present invention requires additional sealing measures to prevent nitrogen leakage.

[0072] The working principle of electrostatic spraying and dyeing of jeans fabric of the present invention is:

[0073] First, the air pump 26 draws the nitrogen in the negative pressure box 24 into the positive pressure box 25, so that the pressure in the negative pressure box 24 decreases and the pressure in the positive pressure box 25 increases. At the same time, the nitrogen in the positive pressure box 25 is heated to above 150° C. by a heater, so that the nitrogen expands rapidly at high temperature, further increasing the pressure in the positive pressure box 25.

[0074] Then, the jeans are hung on the supporting mechanism 3, and the two trouser legs of the jeans are respectively put on the two air bag units 33 of the supporting mechanism 3, and then the hanging chain 1 transports the supporting mechanism 3, so that the supporting mechanism 3 enters the shell 21 of the electrostatic spraying and dyeing assembly 2, and the metal block 39 slides in the slide groove 41 of the docking plate 4, and the second pipe 35 slides in the two guide plates 9, and the supporting mechanism 3 first docks with the air transmission mechanism 23 on the left side. The docking steps are specifically as follows: the second pipe 35 first contacts the left inclined surface of the first pipe 235 and pushes the first pipe 235 backward to drive the movable pipe 233 to move backward, stretching the stretching spring 234, and when the second pipe 35 docks with the first pipe 235, the first pipe 235 resets and enters the second pipe 35 under the elastic force of the stretching spring 234, and at the same time, the first pipe 235 pushes open the sealing plate 362 of the valve 36, and at the same time, the rear end of the second pipe 35 squeezes the touch switch 237 to open the electric valve 236, such as Fig.12 As shown, the hot nitrogen in the positive pressure box 25 quickly enters the airbag unit 33 along the air supply pipe 27, the connecting pipe 231, the air pipe 232, the movable pipe 233, the first connecting pipe 235, the second connecting pipe 35, the hollow pipe 31 and the short pipe 32, so that the airbag unit 33 expands quickly to prop up the jeans. After the second connecting pipe 35 is separated from the first connecting pipe 235, the sealing plate 362 is tightly attached to the fixing frame 361 under the action of the elastic member 363 to close the second connecting pipe 35 to prevent the airbag unit 33 from leaking.

[0075] Next, the held-up jeans are conveyed to the nozzle 29, and at this time, the metal block 39 contacts the conductive plate of the docking plate 4, so that the circuit consisting of the positive electrode of the power supply, the conductive member 8, the roller on the pulley block 6, the telescopic rod 38, the metal block 39, the soft steel bar 331, the conductive plate of the docking plate 4, and the negative electrode of the power supply is connected. At this time, the soft steel bar 331 is connected to electricity as the positive electrode, so that an electric field environment is formed in the space between the airbag unit and the nozzle 29 as the negative electrode. The paint sprayed by the nozzle 29 will be attracted to the surface of the jeans under the electrostatic force of the electric field environment, so as to realize uniform electrostatic spraying and dyeing of the jeans fabric, and a driving device can also be used to drive the support mechanism 3 to rotate or drive the nozzle 29 to move up and down to further improve the uniformity of the spraying;

[0076] Then the metal block 39 is separated from the conductive plate of the docking plate 4 to disconnect the circuit, and then the painted jeans are transported to the right gas delivery mechanism 23. During the transportation process, the hot nitrogen in the airbag unit 33 can quickly dry the painted jeans (the distance between the nozzle 29 and the right gas delivery mechanism 23 can be set according to actual conditions, so as to extend the drying time of the painted jeans with hot nitrogen and improve the drying effect);

[0077] When the supporting mechanism 3 is docked with the air supply mechanism 23 on the right side, the second pipe 35 of the supporting mechanism 3 is connected with the first pipe 235 of the air supply mechanism 23, and the negative pressure box 24 absorbs the hot nitrogen in the airbag unit 33 back into the negative pressure box 24, and then the hot nitrogen is pumped back into the positive pressure box 25 by the air pump 26 for reuse, and then the airbag unit 33 shrinks and is transported out of the electrostatic spraying and dyeing component 2, making it convenient for personnel to remove the jeans after spraying and dyeing.

Claims

1. An electrostatic spraying and dyeing device for jeans fabric, comprising a hanging chain (1), characterized in that: Also includes: At least one set of supporting mechanisms (3), wherein the supporting mechanisms (3) are suspended on the suspension chain (1); An electrostatic spraying and dyeing component (2), wherein the electrostatic spraying and dyeing component (2) is arranged at the bottom of the hanging chain (1); The support mechanism (3) comprises a hollow tube (31), two short tubes (32) are fixed at the bottom end of the hollow tube (31), and an airbag unit (33) is provided at the bottom of each short tube (32); the two trouser legs of the jeans are placed outside the two groups of airbag units (33), and the airbag units (33) comprise a plurality of alternately distributed mild steel strips (331) and rubber sheets (332); The electrostatic spray printing and dyeing assembly (2) comprises a housing (21) and a frame (22) fixed to the bottom end of the housing (21), and two sets of air delivery mechanisms (23) are provided on the rear side of the interior of the frame (22), and the air delivery mechanisms (23) are used to expand or contract the airbag unit (33); A nozzle (29) is fixed to the front wall of the housing (21), and the nozzle (29) is arranged between the two groups of gas delivery mechanisms (23). The nozzle (29) serves as a negative electrode. When the support mechanism (3) delivers the paint to the front side of the nozzle (29), the soft steel bar (331) serves as a positive electrode. The paint is sprayed and dyed on the jeans fabric under the action of static electricity. The gas delivery mechanism (23) comprises a connecting tube (231), a gas tube (232) is fixed on the front side of the connecting tube (231), a movable tube (233) is slidably provided inside the gas tube (232), and the front end of the movable tube (233) extends to the front end of the gas outlet tube (232), the movable tube (233) and the gas outlet tube (232) are connected via a tension spring (234), a connecting tube 1 (235) is fixed on the front end of the movable tube (233), both sides of the connecting tube 1 (235) are processed into inclined surfaces, and a connecting tube 2 (35) is fixedly connected to the rear end of the hollow tube (31) and docked with the connecting tube 1 (235); The frame (22) is provided with a negative pressure box (24) and a positive pressure box (25), the negative pressure box (24) and the positive pressure box (25) are filled with nitrogen, and the positive pressure box (25) is provided with a heater for heating the nitrogen, the connecting pipe (231) of the left gas transmission mechanism (23) is connected to the positive pressure box (25) through an air supply pipe (27), and the connecting pipe (231) of the right gas transmission mechanism (23) is connected to the negative pressure box (24) through an air intake pipe (28); An air pump (26) is provided in the frame (22) between the negative pressure box (24) and the positive pressure box (25), and the air pump (26) is used to pump nitrogen in the negative pressure box (24) into the positive pressure box (25), so that the pressure in the negative pressure box (24) is reduced and the pressure in the positive pressure box (25) is increased, so that the two sets of air delivery mechanisms (23) can inflate or inhale the airbag unit (33); The second connecting pipe (35) is provided with a valve (36), the valve (36) comprising a fixing frame (361) fixed to the inner wall of the second connecting pipe (35), and a sealing plate (362) is provided on a side of the fixing frame (361) close to the hollow pipe (31), the four corners of the sealing plate (362) and the four corners of the fixing frame (361) are connected via elastic members (363), and a gap exists between the outer wall of the sealing plate (362) and the inner wall of the second connecting pipe (35), so as to facilitate nitrogen to enter the hollow pipe (31) along the second connecting pipe (35); The sealing plate (362) is tightly attached to the fixing frame (361) under the elastic force of the elastic member (363) for sealing the second pipe (35), and a sealing gasket for sealing is embedded on a side of the sealing plate (362) close to the fixing frame (361). When the first pipe (235) enters the second pipe (35), it pushes against the sealing plate (362), and the first pipe (235) is connected to the second pipe (35).

2. The electrostatic spraying and dyeing equipment for jeans fabric according to claim 1 is characterized in that: A bottom block (34) is fixed to the bottom end of the airbag unit (33), and a flange 1 (311) is fixed to the top end of the airbag unit (33). A flange 2 (312) is fixed to the bottom end of the short tube (32). The flange 1 (311) and the flange 2 (312) are fixed so that the short tube (32) is connected to the inside of the airbag unit (33).

3. The electrostatic spraying and dyeing equipment for jeans fabric according to claim 1 is characterized in that: The shell (21) is provided with an opening that penetrates the shell (21) from left to right, so as to facilitate the passage of the supporting mechanism (3).

4. The electrostatic spraying and dyeing equipment for jeans fabric according to claim 1, characterized in that: An electric valve (236) is fixed on the connecting pipe (231), and a touch switch (237) for controlling the opening and closing of the electric valve (236) is fixed on one side of the connecting pipe (235). When the connecting pipe (235) enters the connecting pipe (35), the rear end of the connecting pipe (35) squeezes the touch switch (237) to open the electric valve (236), thereby allowing the airbag unit (33) to communicate with the negative pressure box (24) or the positive pressure box (25) through the short tube (32), the hollow tube (31), the connecting pipe (35), the connecting pipe (235), the movable tube (233), the air pipe (232), the connecting pipe (231), the air supply pipe (27) or the air suction pipe (28).

5. The electrostatic spraying and dyeing equipment for jeans fabric according to claim 1, characterized in that: A docking plate (4) is fixed on the front wall of the suspension chain (1) at the top of the nozzle (29), and a slide groove (41) is provided on one side of the docking plate (4) close to the support mechanism (3). The docking plate (4) is divided into three parts, the two side parts of the docking plate (4) are insulating plates, the middle part of the docking plate (4) is a conductive plate, and the conductive plate of the docking plate (4) is connected to the negative pole of the power supply.

6. The electrostatic spraying and dyeing equipment for jeans fabric according to claim 5, characterized in that: An insulating outer frame (37) is fixed to the front end of the hollow tube (31), and a metal block (39) is fixed to the front end of the insulating outer frame (37) via two telescopic rods (38), and both the telescopic rods (38) and the metal block (39) are conductive; An insulating tube (5) is fixed to the top of the hollow tube (31), and a pulley block (6) slidably connected to a suspension chain slide rail (7) is fixed to the end of the insulating tube (5) away from the hollow tube (31), a conductive member (8) is fixed to the suspension chain slide rail (7), the conductive member (8) and the roller on the pulley block (6) are both conductive, and the roller on the pulley block (6) is always in contact with the conductive member (8), the conductive member (8), the roller on the pulley block (6), the telescopic rod (38), the metal block (39) and the soft steel bar (331) are electrically connected in sequence through electric wires, and the conductive member (8) is connected to the positive electrode of a power supply; When the metal block (39) enters the housing (21) and slides along the slide groove (41) of the docking plate (4), when the metal block (39) moves to contact the conductive plate of the docking plate (4), a circuit consisting of the positive electrode of the power supply, the conductive member (8), the roller on the pulley block (6), the telescopic rod (38), the metal block (39), the mild steel bar (331), the conductive plate of the docking plate (4), and the negative electrode of the power supply is connected. At this time, the mild steel bar (331) is connected to electricity as a positive electrode, and generates an electrostatic effect with the nozzle (29) as a negative electrode, which is used for electrostatic spraying and dyeing of jeans fabric.

7. The electrostatic spraying and dyeing equipment for jeans fabric according to claim 6, characterized in that: The telescopic rod (38) comprises an outer rod (381), an inner rod (382) and a compression spring (383); the inner rod (382) is arranged inside the outer rod (381) and extends out of the front end of the outer rod (381); the inner wall of the outer rod (381) and the rear end of the inner rod (382) are connected via the compression spring (383); the rear end of the outer rod (381) is fixed to the front end of the insulating outer frame (37), and the front end of the inner rod (382) is fixed to the rear end of the metal block (39).

8. The electrostatic spraying and dyeing equipment for jeans fabric according to claim 7, characterized in that: The metal block (39) is processed into an inclined surface 1 (310) on one side close to the docking plate (4), and the slide groove (41) is processed into an inclined surface 2 (42) matched with the inclined surface 1 (310) on one side, so that the metal block (39) can enter the slide groove (41) and push the inner rod (382) to squeeze the compression spring (383), so that the metal block (39) and the conductive plate of the docking plate (4) are closely attached to each other through the elastic force, thereby avoiding circuit breaking.

9. The electrostatic spraying and dyeing equipment for jeans fabric according to claim 1, characterized in that: Two guide plates (9) arranged vertically are fixed inside the housing (21), the two guide plates (9) being located at the top and bottom of the first pipe (235) respectively. The second pipe (35) on the support mechanism (3) inside the housing (21) slides between the two guide plates (9) to guide the second pipe (35) so as to facilitate the connection between the second pipe (35) and the first pipe (235).

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