Pre-shrinking machine with pull needle and woolen blanket steaming function

Abstract

The utility model discloses a preshrinking machine with needle pulling and felt steaming functions, which comprises a centering unit, a cloth feeding frame, a cloth feeding frame, a tentering frame, a preshrinking unit and a cloth discharging frame which are sequentially arranged along the cloth conveying direction, the centering unit is fixedly connected with the cloth feeding frame, an operation platform is arranged between the cloth feeding frame and the cloth feeding frame, and the cloth discharging frame is fixedly connected with the cloth feeding frame. A steam humidifying device for humidifying the cloth is arranged between the cloth feeding frame and the tentering frame; and the control unit is used for controlling all the circuit control and switch units. The device is attractive in overall appearance, compact in structure and easy to operate, saves cost, eliminates the defects of existing equipment, effectively solves the problem of process universality of different types of cloth, and further reduces the residual shrinkage rate of the types of cloth.

Description

Technical Field

[0001] The utility model relates to a preshrinking machine with needle drawing and blanket steaming functions, belonging to the technical field of special equipment for textile and light industry. Background Art

[0002] Knitted fabric preshrinkage plays an important role in the finishing of high-end cotton and blended knitted fabrics. From the development trend of knitted fabrics, increasing their added value is the main means for knitting dyeing and finishing enterprises to improve their economic benefits in the future. Many brands of knitting dyeing and finishing enterprises improve their competitive advantages through preshrinkage finishing. Under the market conditions where knitted products tend to be highly priced, the preshrinkage and advanced finishing technology and equipment for knitted fabrics have become a striking development goal.

[0003] The tentering zone + wet overfeed + double-sided felt pre-shrinking machine is the most popular advanced finishing equipment for knitted fabrics. The fabrics that have been finished by the previous process such as loose drying or tentering and shaping are then finished by the tentering overfeed felt pre-shrinking machine to achieve controllable pre-shrinkage. The fabric can achieve the lowest residual shrinkage rate of 3-5%. At the same time, the fabric can also achieve a perfect surface effect and a soft and rich feel.

[0004] Although these companies have accumulated a lot of experience in equipment development and manufacturing over a long period of time, there are still big differences in the overall structure and use effects of their pre-shrinking machines. There are mainly the following structural and technical features:

[0005] like Figure 1 As shown in the figure, the structure of the felt pre-shrinking machine with double steam units and four rollers has the following disadvantages:

[0006] 1) The four-roller blanket structure shortens the service life of the blanket and the cost of replacing the blanket is high. Figure 2 shown.

[0007] 2). Double steam humidification unit can easily make the fabric too humid, which will affect the pre-shrinkage effect, and the equipment is prone to corrosion and rust.

[0008] 3). The cloth delivery rack is bulky and too low, which affects the operation.

[0009] like Figure 3 As shown in the figure, the overall structure of the felt blanket pre-shrinking machine with front and rear electrical units and a three-roller structure has the following disadvantages:

[0010] 1) The cloth feeding rack is provided with an electrical control unit, which is electrically connected to the pre-shrinking unit. The layout of the electrical components is scattered, not compact, and the cost is high.

[0011] 2) There is a gap between the lower end of the front protective door of the pre-shrinkage unit and the guide chain, which poses a safety hazard.

[0012] 3) The control panel is far away from the operating platform, making operation inconvenient.

[0013] 4) The structure of the cloth discharging rack is outdated, the cloth swing rack drive is not smooth, the driving connecting rod is stuck and easily damaged. It is difficult to repair and replace parts because of the unreasonable structure and small space.

[0014] In general, the current structure is complex, the shape is not beautiful, the residual shrinkage rate is unstable, and the cost is high. In particular, the versatility of fabric technology and the control of residual shrinkage rate are the primary issues. Summary of the invention

[0015] The technical problem to be solved by the utility model is: how to reduce the residual shrinkage rate of cloth.

[0016] In order to solve the above technical problems, the technical solution of the utility model is to provide a pre-shrinking machine with needle drawing and blanket steaming functions, characterized in that it includes a centering unit, a cloth feed frame, a cloth feeding frame, a tentering frame, a pre-shrinking unit, and a cloth outlet frame arranged in sequence along the cloth transport direction, the centering unit is tightly connected to the cloth feed frame, an operating platform is provided between the cloth feed frame and the cloth feeding frame, and a steam humidifying device for humidifying the cloth is provided between the cloth feeding frame and the tentering frame; and also includes a control unit for controlling all circuit controls and switch units;

[0017] The centering unit includes a cloth guiding device, a width expanding device, and a centering device which are sequentially arranged along the cloth conveying direction;

[0018] The cloth feeding frame comprises a cloth feeding frame body, and the cloth feeding frame body is connected with two first cloth guide rollers and a set of tension detection rollers which are sequentially arranged along the cloth conveying direction;

[0019] The operating platform is composed of a steel structure frame and a pedal. The pedal is detachably arranged at the bottom of the steel structure frame. A second cloth guide roller under the cloth feeding frame is arranged on one side of the bottom of the steel structure frame.

[0020] The cloth feeding frame includes two first widening rollers, a cloth feeding roller and a plurality of second cloth guide rollers arranged along the cloth transport direction; the cloth feeding roller is provided with its own driving device, and the two first widening rollers are connected to the corresponding reduction motors;

[0021] The tenter frame includes a tenter frame body and a needle chain. The tenter frame body is provided with an edge stripper located between the cloth feeding frame and the needle chain. The front end of the needle chain is provided with a photoelectric cloth conductive device. One side of the needle chain is provided with a brush wheel. When the needle chain is operated to overfeed the fabric, the brush wheel presses the fabric onto the needle chain. The tenter frame body includes a feeding frame located at the front and a fixed width frame located at the rear. The needle chain is arranged on the feeding frame. Each side of the needle chain is provided with a needle removal device for removing the fabric from the needle chain.

[0022] The preshrinking unit includes a preshrinking roller that can automatically adjust the centering and pressure, and a second widening roller. The preshrinking roller is composed of two heat-resistant smooth rollers and is wrapped with a stretchable preshrinking blanket. The bearings of the preshrinking roller are fixed on both sides of the welded frame and driven by a stepless speed motor. A second widening roller is provided in front of the preshrinking roller to fully expand the fabric.

[0023] Preferably, the expansion device comprises two third expansion rollers, the two third expansion rollers are respectively connected to the corresponding reduction motors, and the two third expansion rollers are also respectively connected to hand wheels for adjusting the expansion effect.

[0024] Preferably, the centering unit further comprises a weft straightening device, which is arranged at the cloth inlet of the shrinking machine; the weft straightening device comprises a roller, which is connected to a control unit for controlling the angular position of the roller via a signal.

[0025] Preferably, the feeding rack is also provided with a tension-free device and a lubricating oil dripping device on each side of the feeding rack.

[0026] Preferably, the needle chain is a vertical rotary needle chain; the cloth feeding roller is covered with an anti-slip structure; the surface of the pre-shrinking roller is provided with a cleaning device; and the front of the tenter frame is provided with a transparent organic glass sliding door for facilitating cloth feeding operations.

[0027] Preferably, the pre-shrinking unit further comprises a tension sensor and an adjustment system to ensure that the tension of the fabric can be automatically controlled from beginning to end and maintain the desired set value.

[0028] Preferably, the steam humidification device comprises a steaming area, and the tenter frame is provided with an anti-condensation structure for adding steam under the fabric, and the anti-condensation structure is provided with an automatic valve and a steam trap for controlling the amount of steam; a buffer is provided on the side of the steam humidification device so that the steam moves only along the direction of the fabric.

[0029] Preferably, the cloth discharge rack comprises a cooling unit for cooling the fabric, an anti-static elimination rod for removing static electricity from the fabric, and a cloth discharge device with a cloth stacking rack, wherein the cooling unit comprises an air suction system for cooling the fabric laid flat on the conveyor belt; the cloth discharge device with the cloth stacking rack comprises a swing arm for tension-free discharge of the fabric, and the swing arm is located at the outlet of the pre-shrinking machine.

[0030] Preferably, the control unit is a control and regulation unit of the drive system, and the control unit includes an electric control cabinet and an operating screen that can rotate 360 ​​degrees. The operating screen is arranged on the electric control cabinet, and all circuit control and switch units are arranged in the electric control cabinet.

[0031] Compared with the prior art, the utility model has at least one of the following beneficial effects:

[0032] The utility model has beautiful overall shape, compact structure, simple operation and cost saving, eliminates the disadvantages of the above-mentioned existing equipment, effectively solves the problem of process universality of different fabrics, and further reduces the residual shrinkage rate of fabrics to as low as 3%. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of an existing felt pre-shrinking machine with double steam units and a four-roller structure;

[0034] Figure 2 It is a schematic diagram of an existing four-roller felt blanket structure;

[0035] Figure 3 It is a schematic diagram of the overall structure of an existing felt blanket pre-shrinking machine with front and rear electrical units and a three-roller structure;

[0036] Figure 4 It is a side view of a pre-shrinking machine with needle drawing and blanket steaming functions;

[0037] Figure 5 A top view of a pre-shrinking machine with needle drawing and blanket steaming functions;

[0038] Figure 6 for Figure 4 A partial enlarged schematic diagram of (a);

[0039] Figure 7 for Figure 4 A partial enlarged schematic diagram of (b).

[0040] in:

[0041] 1. Centering unit; 2. Fabric infeed rack; 3. Operating platform; 4. Fabric feeding rack; 5. Tenter rack; 6. Steam humidification device; 7. Pre-shrinking unit; 8. Fabric outfeed rack;

[0042] 11 is a cloth guiding device; 12 is a width expanding device; 13 is a centering device;

[0043] 21 is a first cloth guide roller; 22 is a tension detection roller;

[0044] 31 is a steel structure frame; 32 is a pedal;

[0045] 41 is the second cloth guide roller; 42 is the first expansion roller; 43 is the cloth feeding roller;

[0046] 51 is a transparent organic glass sliding door; 52 is an edge stripper; 53 is a needle chain; 54 is a photoelectric cloth-conducting device; 55 is a brush wheel; 56 is a feeding rack; 57 is a width setting rack; 58 is a needle-removing device; 59 is a tension-free device; 50 is a device for dripping lubricating oil;

[0047] 61 is an automatic valve; 62 is a steam trap; 63 is a buffer;

[0048] 71 is a pre-shrinking roller; 72 is an automatic centering device; 73 is a pre-shrinking blanket; 75 is a second widening roller; 76 is a tension sensor; 77 is an adjustment system;

[0049] 81 is a cooling unit; 82 is a static elimination rod; 83 is a cloth discharging device;

[0050] 831 is a swing arm;

[0051] 91 is an electric control cabinet; 92 is an operation panel;

[0052] 121 is an expansion roller; 122 is a hand wheel;

[0053] 141 is a roller. DETAILED DESCRIPTION

[0054] In order to make the present invention more clearly understood, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0055] The utility model provides a pre-shrinking machine (PROCOMPACT) with needle drawing and blanket steaming functions, such as Figure 4-Figure 7 As shown, it includes a centering unit 1, a cloth feed rack 2, an operating platform 3, a cloth feeding rack 4, a stretching rack 5, a steam humidifying device 6, a pre-shrinking unit 7, a cloth outlet rack 8, and a control unit, which are arranged in sequence along the cloth transport direction. The centering unit 1 is fastened to the cloth feed rack 2 by bolts.

[0056] The centering unit 1 is composed of a fabric guide device 11, an expansion device 12, and a centering device 13. The expansion device 12 includes two third expansion rollers 121, which are driven by a reduction motor, and the expansion effect can be manually adjusted by a hand wheel 122; the centering device 13 is a clamping plate type centering and deviation correction device for open-width knitted fabrics. (The clamping plate type centering and deviation correction device is a prior art, purchased from:

[0057] Brand: German Leimer E+L Model: SWA9511 158197)

[0058] In order to avoid the fabric from being twisted, especially for striped fabrics, a weft straightening device 14 is installed at the cloth feeding part of the machine. This device is composed of a set of rollers 141, and the angular position of the rollers 141 is set by the operator on the control panel (control unit).

[0059] The cloth feeding frame 2 is formed by welding of sturdy steel parts. Two first cloth guide rollers 21 and a set of tension detection rollers 22 are also part of the cloth feeding frame 2.

[0060] There is an operating platform 3 between the cloth feeding rack 2 and the cloth feeding rack 4. The operating platform 3 is composed of a steel structure frame 31 and a pedal 32 (aluminum patterned plate). The pedal 32 can be removed. When the machine is debugged, the pedal 32 can be easily moved to feed the cloth into the second cloth guide roller 41 under the cloth feeding rack 4.

[0061] The cloth feeding frame 4 is composed of two first widening rollers 42, a cloth feeding roller 43 and several second cloth guide rollers 41. The cloth feeding roller 43 is covered with anti-slip material and has its own driving device, which can ensure that the fabric can enter the needle chain device in a tension-free state. The two first widening rollers 42 are made of stainless steel and driven by a reduction motor. Their structure is specially designed to ensure that the open-width knitted fabric can achieve the best widening effect.

[0062] Two transparent organic glass sliding doors 51 are installed at the front of the tenter frame 5, which can easily perform the cloth feeding operation. The tenter frame 5 consists of a 7.8-meter-long tenter frame body and is equipped with a low-maintenance needle chain 53 made of stainless steel and low-friction materials, and is a vertical rotating needle chain. The fabric is taken by the cloth feeding roller 43, and then unfolded and conveyed through the edge stripper 52 to enter the needle chain 53, and a photoelectric cloth-conducting device 54 is installed at the front end. When the needle chain 53 operates to overfeed the fabric, a pair of brush wheels 55 press the fabric onto the needle chain 53, which can prevent the fabric from falling off the needle chain 53. If the fabric is improperly hung on the needle, the machine will stop through the needle chain control device.

[0063] At the front of the tenter frame 5 is a 3-meter-long angle-adjustable feeding frame 56, which includes a revolving chain, and at the rear is a 4.8-meter-long fixed width frame 57. On each side of the revolving chain is a needle-removing device 58 to remove the fabric from the needle chain 53.

[0064] The front of the tenter frame 5 includes a tension-free device 59 and a device for dripping lubricating oil 50 on each side of the machine. The tenter frame 5 is mounted on a frame welded by a strong steel structure.

[0065] The steam humidification device 6 comprises a steaming area of ​​about 1 meter in length, and an anti-condensation structure made of stainless steel is installed on the tenter frame 5. Its function is to add steam under the fabric, and it is equipped with an automatic valve 61 that can control the amount of steam and a required steam trap 62. The buffer 63 on the side of the frame makes the steam move only in the direction of the fabric.

[0066] The pre-shrinking unit 7 includes a pre-shrinking roller 71, an automatic centering device 72, a second widening roller 75, a tension sensor 76 and an adjustment system 77. The pre-shrinking roller 71 is composed of two heat-resistant smooth rollers with a diameter of 350 mm and chrome-coated on the surface, which are wrapped by a stretchable pre-shrinking blanket 73 and can automatically adjust the centering and pressure. The automatic centering device 72 is designed to work in a small amplitude and step adjustment state, so as to ensure the strength and life of the blanket.

[0067] During the calendering, leveling and pre-shrinking process, the open width fabric is fed by a low friction shrink paper to adjust the fabric feed amount, and then passes between the pre-shrinking felt 73 and the pre-shrinking roller 71.

[0068] The bearings of the pre-shrinking roller 71 are arranged on both sides of a solid welded frame and driven by a stepless speed-changing motor.

[0069] There are cleaning devices on the surfaces of these pre-shrinking rollers 71 to ensure that the shrink paper is not damaged by debris when the fabric passes through.

[0070] The width is controlled by a horizontal tenter frame 5, and the fabric is guided from the feeding side. The pre-shrinking zone is composed of a special position-adjustable correction roller system.

[0071] A stainless steel second expansion roller 75 ensures that the fabric is fully expanded before entering the first pre-shrinking unit 7.

[0072] The tension sensor 76 and the adjustment system 77 ensure that the tension of the fabric can be automatically controlled from beginning to end and maintain the desired set value.

[0073] The heating medium of the preshrinking drum 7 is usually saturated steam at a pressure of 4 bar, which is supplied through a steam rotary joint at the side.

[0074] The cloth discharging rack 8 includes a cooling unit 81, a static elimination rod 82, and a cloth discharging device 83 with a cloth-handling rack. The cooling unit 81 includes an air suction system. After pre-shrinkage, the fabric is laid flat on the conveyor belt and cooled by the air suction system. The static elimination rod 82 can remove static electricity from the fabric, ensure the safety of fabric processing, and improve the surface effect of fabric rolling / manipulation. The cloth discharging device 83 with a cloth-handling rack includes a swing arm 831. There is an independent swing arm 831 drive at the outlet of the machine, which is designed for tension-free fabric output, and the fabric is transported to the final inspection table and packaged or to the next processing step.

[0075] The control unit is the control and regulation unit of the drive system. All circuit control and switch units, that is, all necessary protective devices and fuses with wire connections are placed in an electric control cabinet (according to structural requirements), which is made of steel plates and painted with anti-rust materials. The electric control cabinet is air-conditioned. The cable connection inside the machine and the connection for the drive and control panel are all within the scope of supply. All operations can be completed on the operating panel. The operating panel can be rotated 360°.

Claims

1. A pre-shrinking machine with needle drawing and blanket steaming functions, characterized in that: The invention comprises a centering unit (1), a cloth feed frame (2), a cloth feeding frame (4), a tentering frame (5), a pre-shrinking unit (7), and a cloth output frame (8) which are sequentially arranged along the cloth transport direction; the centering unit (1) is tightly connected to the cloth feed frame (2); an operating platform (3) is arranged between the cloth feed frame (2) and the cloth feeding frame (4); a steam humidifying device (6) for humidifying the cloth is arranged between the cloth feeding frame (4) and the tentering frame (5); and a control unit for controlling all circuit control and switch units is also included; The centering unit (1) comprises a cloth guiding device (11), a width expanding device (12), and a centering device (13) which are sequentially arranged along the cloth transport direction; The cloth feed frame (2) comprises a cloth feed frame body, to which two first cloth guide rollers (21) and a set of tension detection rollers (22) are connected in sequence along the cloth transport direction; The operating platform (3) is composed of a steel structure frame (31) and a pedal (32), wherein the pedal (32) is detachably arranged at the bottom of the steel structure frame (31), and a second cloth guide roller (41) below the cloth feeding frame (4) is arranged on one side of the bottom of the steel structure frame (31); The cloth feeding frame (4) comprises two first widening rollers (42) arranged along the cloth transport direction, a cloth feeding roller (43) and a plurality of second cloth guide rollers (41); the cloth feeding roller (43) is provided with its own driving device, and the two first widening rollers (42) are connected to the corresponding reduction motors; The tenter frame (5) comprises a tenter frame body and a needle chain (53), the tenter frame body is provided with an edge stripper (52) located between a cloth feeding frame (4) and the needle chain (53), the front end of the needle chain (53) is provided with a photoelectric cloth guiding device (54), one side of the needle chain (53) is provided with a brush wheel (55), when the needle chain (53) is operated to overfeed the fabric, the brush wheel (55) presses the fabric onto the needle chain (53); the tenter frame body comprises a feeding frame (56) located at the front and a fixing frame (57) located at the rear, the needle chain (53) is arranged on the feeding frame (56), and each side of the needle chain (53) is provided with a needle removing device (58) for removing the fabric from the needle chain (53); The preshrinking unit (7) comprises a preshrinking roller (71) capable of automatically adjusting centering and pressure, and a second widening roller (75). The preshrinking roller (71) is composed of two heat-resistant smooth rollers and is wrapped by a stretchable preshrinking blanket (73). The bearings of the preshrinking roller (71) are fixed on both sides of a welded frame and driven by a stepless speed-changing motor. A second widening roller (75) is arranged in front of the preshrinking roller (71) to fully expand the fabric.

2. A preshrinking machine with needle drawing and blanket steaming functions as claimed in claim 1, characterized in that: The expansion device (12) comprises two third expansion rollers (121), the two third expansion rollers (121) are respectively connected to corresponding reduction motors, and the two third expansion rollers (121) are also respectively connected to hand wheels (122) for adjusting the expansion effect.

3. A preshrinking machine with needle drawing and blanket steaming functions as claimed in claim 1, characterized in that: The centering unit (1) further comprises a weft straightening device (14), which is arranged at the cloth inlet of the shrinking machine; the weft straightening device (14) comprises a roller (141), and the roller (141) is connected to a control unit for controlling the angular position of the roller (141) via a signal.

4. A preshrinking machine with needle drawing and blanket steaming functions as claimed in claim 1, characterized in that: The feeding frame (56) is also provided with a tension-free device (59) and a lubricating oil dripping device (50) on each side of the feeding frame (56).

5. A preshrinking machine with needle drawing and blanket steaming functions as claimed in claim 1, characterized in that: The needle chain (53) is a vertically rotating needle chain; the cloth feeding roller (43) is covered with an anti-slip structure; the surface of the pre-shrinking roller (71) is provided with a cleaning device; and the front of the tentering frame (5) is provided with a transparent organic glass sliding door (51) for facilitating cloth feeding operations.

6. A preshrinking machine with needle drawing and blanket steaming functions as claimed in claim 1, characterized in that: The pre-shrinking unit (7) also includes a tension sensor (76) and an adjustment system (77) for ensuring that the tension of the fabric can be automatically controlled from beginning to end and maintain the desired set value.

7. A preshrinking machine with needle drawing and blanket steaming functions as claimed in claim 1, characterized in that: The steam humidifying device (6) comprises a steaming area, and an anti-condensation structure for adding steam under the fabric is provided on the tenter frame (5), and an automatic valve (61) and a steam trap (62) for controlling the amount of steam are provided on the anti-condensation structure; a buffer (63) is provided on the side of the steam humidifying device (6) so that the steam moves only along the direction of the fabric.

8. A preshrinking machine with needle drawing and blanket steaming functions as claimed in claim 1, characterized in that: The cloth discharging rack (8) comprises a cooling unit (81) for cooling the cloth, a static elimination rod (82) for removing static electricity from the cloth, and a cloth discharging device (83) with a cloth stacking rack, wherein the cooling unit (81) comprises an air suction system for cooling the cloth laid flat on the conveyor belt; The cloth discharging device (83) with the cloth-stitching frame comprises a swing arm (831) for discharging the cloth without tension, and the swing arm (831) is located at the outlet of the pre-shrinking machine.

9. A preshrinking machine with needle drawing and blanket steaming functions as claimed in claim 1, characterized in that: The control unit is a control and adjustment unit of the drive system. The control unit comprises an electric control cabinet (91) and an operating screen (92) that can rotate 360 ​​degrees. The operating screen (92) is arranged on the electric control cabinet (91). All circuit control and switch units are arranged in the electric control cabinet (91).

Images