A pre-shrinking machine for producing linen fabrics

Abstract

The invention discloses a preshrinking machine for producing linen fabrics, which is applied to the technical field of linen fabric production. Linen fabric is wound around a cloth feeding roller on the left side, and one end of the linen fabric enters between a rubber blanket and a pressure roller. A double-sided detection mechanism is provided on a slider, and a double-sided detection mechanism is provided on a top plate. The double-sided detection mechanism on the slider can detect the tension of the linen fabric on both sides of the pressure roller, so as to avoid the linen fabric on both sides from being easily wrinkled due to different tensions during preshrinking treatment, thereby affecting the quality of the preshrinking treatment of the linen fabric. The double-sided detection mechanism on the top plate can detect the alignment degree of the linen fabric on both sides of the pressure roller, so as to avoid the linen fabric on both sides from being tilted due to misalignment during preshrinking treatment, thereby causing the linen fabric to be twisted, thereby affecting the quality of the preshrinking treatment of the linen fabric.

Description

Technical Field

[0001] The invention relates to the technical field of linen fabric production, in particular to a preshrinking machine for linen fabric production. Background Art

[0002] The pre-shrinking machine, also known as the shrink-proof machine, is a device for mechanical pre-shrinking of fabrics. Under suitable wet and hot conditions, the fabrics are expanded and contracted by the elastic blanket to increase the weft density and radial shrinkage to a certain extent, so that the fabrics have a relaxed structure. When the fibers are mixed and swollen, the radial length is no longer shortened, which significantly reduces the shrinkage rate of the finished product.

[0003] The existing preshrinking machine often uses a three-roller structure to preshrink the linen fabric. When the three-roller preshrinking machine is preshrinking the linen fabric, it is easy for the tension of the linen fabric on both sides to be different, and the linen fabric on both sides is not aligned, which will cause the linen fabric to often wrinkle or twist during the preshrinking process, resulting in poor quality of the preshrinking of the linen fabric. At the same time, when the linen fabric on the same side is tilted relative to the roller body, it will also cause wrinkles or twists. Therefore, the existing linen fabric preshrinking machine cannot meet the needs in actual use, so there is an urgent need for improved technology to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a preshrinking machine for producing linen fabrics to solve the above-mentioned problems.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a preshrinking machine for producing linen fabrics, comprising a pressure roller, a fixing seat, a rubber blanket, a cloth guide roller, a cloth feed roller, and a control panel. The pressure roller is fixedly connected with a connecting shaft, three cloth guide rollers are provided, two of which are distributed on the left and right sides of the pressure roller, and another cloth guide roller is arranged directly below the pressure roller. The rubber blanket is rotatably sleeved between the pressure roller and the cloth guide roller. Two cloth feed rollers are provided, and the two cloth feed rollers are arranged on the left and right sides above the pressure roller. Linen fabric is wound around the left cloth feed roller, and one end of the linen fabric is extended from between the rubber blanket and the pressure roller. The cloth enters through the space between the fixing seat and passes through another cloth feeding roller after coming out. A connecting frame is fixedly connected to the upper end of the fixing seat. A connecting hole cooperating with the connecting shaft is provided at the lower center position of the connecting frame. The connecting shaft rotatably cooperates with the connecting frame through the connecting hole. A top plate and a bottom plate are respectively fixedly connected to the upper end and the middle of the connecting frame. A threaded rod 1 is rotatably connected between the top plate and the bottom plate. A slider 2 is threadedly connected to the threaded rod 1. The end of the slider 2 away from the threaded rod 1 is fixedly connected to the slider 1. A double-sided detection mechanism is provided on the slider 1, and a double-sided detection mechanism is provided on the top plate.

[0007] Furthermore, the control panel is fixedly connected to the top plate, a controller is installed inside the control panel, and a plurality of sound and light alarms of different colors are installed outside the control panel. The double-sided detection mechanism includes a connecting seat, a second threaded rod, a sliding seat, a roller, and a pressure difference sensor. The two sides of the sliding block are symmetrically fixed with connecting seats, and two brackets are fixedly connected to the connecting seat. A second threaded rod is rotatably installed on the upper bracket, and a second motor is also fixedly connected to the connecting seat. The output end of the second motor is fixedly connected to the second threaded rod, and a second guide rod is fixedly installed on the lower bracket, and one end of the second guide rod is fixedly connected to the bracket. The upper side of the sliding seat is threadedly connected to the second threaded rod, and the lower side of the sliding seat is slidably connected to the second guide rod.

[0008] Furthermore, the interior of the slide is hollow and slidably connected to a slide rod, one end of the slide rod passes through the slide and is fixedly connected to an abutment frame, a roller is rotatably installed inside the abutment frame, one end of the slide rod located inside the slide is fixedly connected to a guide head, a dynamometer is fixedly connected to the side wall of the slide away from the slide rod, and the dynamometer is electrically connected to the controller.

[0009] Furthermore, the sliding rod is provided with a guide head at one end which is also fixedly connected to a push rod, the guide head is located in the middle position of the push rod, the push rod at one end away from the sliding rod slides through the sliding seat and is fixedly connected to a piston member, the differential pressure sensor is fixedly connected to the sliding block 1, connecting pipes are installed on both sides of the differential pressure sensor, the other end of the connecting pipe penetrates through the interior of the sliding block 1 and the connecting seat and then extends to the outside and is fixedly connected to a sealing box, the interior of the sealing box is hollow, the piston member at one end away from the push rod is slidably connected to the interior of the sealing box, and a one-way valve is also installed on the sealing box, the one-way valve allows gas to flow into the sealing box only from the outside, the differential pressure sensor is electrically connected to the controller, and a single-sided detection component is also provided on the abutment frame.

[0010] Furthermore, the single-sided detection component includes an abutment plate, a measuring block, and a measuring rod. Two measuring rods are provided, and two abutment plates are provided and are respectively fixed at both ends of the abutment frame. One end of the measuring rod close to the linen fabric slides through the abutment plate, and the other end of the measuring rod is fixedly connected to a measuring block. A laser transmitter is provided on one measuring block, and a laser receiver is provided on the other measuring block. A spring is provided on the outer sleeve of the measuring rod, and the spring is fixed between the measuring block and the abutment plate.

[0011] Furthermore, a motor is fixedly connected to the top plate, the output end of the motor is fixedly connected to a threaded rod, guide rods are provided on both sides of the threaded rod, two guide rods are fixedly connected between the top plate and the bottom plate, the top plate is in the shape of an "I", the linen fabric is engaged on both sides of the top plate, and bilateral detection mechanisms are installed on the four ends of the top plate.

[0012] Furthermore, the bilateral detection mechanism includes a connecting block, a measuring rod 2, a gas spring, a slide groove and a gear. One end of the measuring rod 2 passes through the side wall of the top plate and is installed with a flexible sensor. The other end of the measuring rod 2 is fixedly connected to the connecting block. The connecting block and the side wall of the top plate are fixedly connected to the two ends of the gas spring. A laser transmitter and a laser receiver are respectively provided on the side walls of the two measuring rods 2 located on the same rod body of the top plate, and a plurality of slide grooves are provided on the connecting block.

[0013] Furthermore, a sliding tooth is slidably connected inside the slide groove, one end of the sliding tooth is meshed with the gear, and the other end is fixedly connected to magnet 2, the bottom wall of the slide groove is fixedly connected to magnet 1, a spring 2 is fixedly connected between magnet 1 and magnet 2, a fixing rod is also fixedly connected to the side wall of the top plate, a motor 3 is installed on the fixing rod, and the output end of motor 3 is fixedly connected to the gear.

[0014] Furthermore, the laser transmitter, the laser receiver, and the flexible pressure sensor are all electrically connected to the controller.

[0015] The present invention has the following beneficial effects:

[0016] The double-sided detection mechanism can be used to detect the tension of the linen fabric on both sides of the pressure roller, so as to avoid the linen fabric on both sides from forming wrinkles due to different tensions during pre-shrinkage, which will affect the quality of the pre-shrinkage of the linen fabric. The double-sided detection mechanism on the top plate can detect the alignment of the linen fabric on both sides of the pressure roller, so as to avoid the linen fabric on both sides from tilting during pre-shrinkage due to misalignment, which will cause the linen fabric to twist and affect the quality of the pre-shrinkage of the linen fabric.

[0017] 2. Through the cooperation of the slide bar, dynamometer, guide head and other structures, the staff can see the tension of the linen fabric on both sides of the pressure roller through the control panel, so as to judge whether the tension of the linen fabric needs to be adjusted, so as to avoid the poor quality of the linen fabric after pre-shrinkage treatment due to inappropriate tension of the linen fabric.

[0018] 3. Through the cooperation of pressure difference sensor, sealing box, connecting pipe and other structures, when the tension of the linen fabric on both sides of the pressure roller is inconsistent, the pressure difference sensor transmits the signal to the controller. When the pressure difference exceeds a certain range, the controller starts the sound and light alarm of the corresponding color on the control panel to sound an alarm, thereby reminding the staff that the tension of the linen fabric on both sides of the pressure roller is different.

[0019] 4. Through the coordination of the measuring rod 1, the measuring block and other structures, when the feeding state of the linen fabric is inclined relative to the pressure roller, the controller receives the signal and controls the sound and light alarm of the corresponding color to sound an alarm, thereby reminding the staff to make adjustments to avoid wrinkles or twists in the subsequent pre-shrinkage of the linen fabric, which affects the quality of pre-shrinkage.

[0020] 5. Through the coordination of gears, measuring rod 2, magnet 1 and other structures, when the edges of the linen fabric on both sides of the pressure roller are not aligned, the laser transmitters and laser receivers on the two measuring rods 2 will also be staggered. At this time, the controller receives a signal, and the controller controls the sound and light alarm of the corresponding color to sound an alarm, reminding the staff that the edges of the linen fabric on both sides of the pressure roller are not aligned and need to be adjusted to prevent the subsequent pre-shrinkage treatment of the linen fabric from causing wrinkles or distortions, affecting the quality of the pre-shrinkage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a front structural schematic diagram of the pressure roller and the linen fabric of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the double-sided detection mechanism in the present invention;

[0024] Figure 3 It is a schematic diagram of the reverse structure of the pressure roller and the linen fabric in the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of three rollers in the present invention;

[0026] Figure 5 It is an enlarged view of the structure at A in the present invention;

[0027] Figure 6 It is a schematic diagram of the connection structure of the abutment plate in the present invention;

[0028] Figure 7 It is a schematic diagram of the local structure of the bilateral detection mechanism in the present invention;

[0029] Figure 8 It is a schematic diagram of the partial structure of the bilateral detection mechanism in the present invention;

[0030] Fig. 9 It is a schematic diagram of the internal structure of the sliding groove in the present invention.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Fixed seat; 2. Linen fabric; 3. Connecting frame; 4. Bottom plate; 5. Connecting block; 6. Bracket; 7. Motor 1; 8. Control panel; 9. Threaded rod 1; 10. Sliding block 1; 11. Abutment plate; 12. Guide rod 2; 13. Sliding seat; 14. Threaded rod 2; 15. Pressure roller; 16. Connecting seat; 17. Motor 2; 18. Sealing box; 19. Push rod; 20. Connecting pipe; 21. Sliding rod; 22. Roller column; 23. Measuring block; 24. Spring 1; 2 5. Slide groove; 26. Connecting shaft; 27. Slider 2; 28. Top plate; 29. ​​Pressure difference sensor; 30. Rubber blanket; 31. Cloth guide roller; 32. Cloth feed roller; 33. Guide rod 1; 34. Gear; 35. Motor 3; 36. Piston; 37. Dynamometer; 38. Guide head; 39. Spring 2; 40. Magnet 1; 41. Measuring rod 1; 42. Magnet 2; 43. Fixed rod; 44. Measuring rod 2; 45. Gas spring; 46. Sliding tooth; 47. Abutment frame. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0034] See also Figure 1-8 As shown, the present invention is a preshrinking machine for producing linen fabrics, comprising a pressure roller 15, a fixing seat 1, a rubber blanket 30, a cloth guide roller 31, a cloth feed roller 32, and a control panel 8. The pressure roller 15 is fixedly connected with a connecting shaft 26. There are three cloth guide rollers 31, two of which are distributed on the left and right sides of the pressure roller 15, and another cloth guide roller 31 is arranged directly below the pressure roller 15. The rubber blanket 30 is rotatably sleeved between the pressure roller 15 and the cloth guide roller 31. There are two cloth feed rollers 32, which are arranged on the left and right sides above the pressure roller 15. The linen fabric 2 is wound around the left cloth feed roller 32, and one end of the linen fabric 2 is extended from the rubber blanket 30 and the pressure roller 15. The cloth enters between the two and passes through another cloth feeding roller 32 after coming out. The upper end of the fixed seat 1 is fixedly connected to a connecting frame 3. A connecting hole cooperating with the connecting shaft 26 is provided at the center position below the connecting frame 3. The fixed seat 1 supports and fixes the equipment on the entire connecting frame 3. The connecting shaft 26 rotatably cooperates with the connecting frame 3 through the connecting hole. The upper end and the middle of the connecting frame 3 are respectively fixedly connected to a top plate 28 and a bottom plate 4. A threaded rod 9 is rotatably connected between the top plate 28 and the bottom plate 4. A slider 27 is threadedly connected to the threaded rod 9. A slider 10 is fixedly connected to the end of the slider 27 away from the threaded rod 9. A double-sided detection mechanism is provided on the slider 10, and a double-sided detection mechanism is provided on the top plate 28.

[0035] The pressure roller 15 can be heated, and the linen fabric 2 is pulled out from one of the cloth feed rollers 32, passes between the pressure roller 15 and the rubber blanket 30, and then passes through another cloth feed roller 32. During this process, when the guide roller 31 and the pressure roller 15 rotate, the linen fabric 2 is pre-shrunk under the squeezing action of the pressure roller 15, the rubber blanket 30 and the guide roller 31. The pre-shrunk treatment of the three-roller structure is a prior art in this field, so the specific structure will not be described in detail. The double-sided detection mechanism on the slider 10 can detect the tension of the linen fabric 2 on both sides of the pressure roller 15 to avoid the linen fabric 2 on both sides from forming wrinkles due to different tensions during the pre-shrunk treatment, which affects the linen fabric. 2, the double-sided detection mechanism on the top plate 28 can detect the alignment of the linen fabric 2 on both sides of the pressure roller 15 to avoid the linen fabric 2 on both sides from tilting due to misalignment during the pre-shrinkage treatment, which will cause the linen fabric 2 to twist and affect the quality of the pre-shrinkage treatment of the linen fabric 2. Since the double-sided detection mechanism and the double-sided detection mechanism are both arranged on the connecting frame 3, and the center of the connecting frame 3 is rotatably matched with the connecting shaft 26 of the pressure roller 15, the double-sided detection mechanism and the double-sided detection mechanism can detect the linen fabric 2 on both sides based on the center of the pressure roller 15, thereby improving the accuracy of the detection.

[0036] The control panel 8 is fixedly connected to the top plate 28, a controller is installed inside the control panel 8, and a plurality of sound and light alarms of different colors are installed outside the control panel 8. The double-sided detection mechanism includes a connecting seat 16, a threaded rod 14, a slide 13, a roller 22, and a pressure difference sensor 29. The two sides of the slider 10 are symmetrically fixed with connecting seats 16, and two brackets 6 are fixedly connected to the connecting seat 16. The threaded rod 14 is rotatably installed on the upper bracket 6. The motor 17 is also fixedly connected to the connecting seat 16, and the output end of the motor 17 is fixedly connected to the threaded rod 14. A guide rod 12 is fixedly installed on the lower bracket 6, and one end of the guide rod 12 is fixedly connected to the bracket 6. The upper side of the slide 13 is threadedly connected to the threaded rod 14, and the lower side of the slide 13 is slidably connected to the guide rod 12. When the threaded rod 14 rotates, it drives the slide 13 to move. With the cooperation of the guide rod 12, the stability and directionality of the slide 13 when moving are guaranteed.

[0037] The interior of the slide 13 is hollow and slidably connected with a slide rod 21, one end of the slide rod 21 passes through the slide 13 and is fixedly connected to an abutment frame 47, a roller 22 is rotatably installed inside the abutment frame 47, one end of the slide rod 21 located inside the slide 13 is fixedly connected to a guide head 38, a dynamometer 37 is fixedly connected to the side wall of the slide 13 away from the slide rod 21, and the dynamometer 37 is electrically connected to the controller. Before the pre-shrinkage process is performed, when the motor 17 is started, the threaded rod 14 is driven to rotate, and the slide 13 moves on the threaded rod 14, and the slide 13 moves. When the roller 22 moves, it drives the internal slide bar 21 to move towards the direction close to the linen fabric 2 until the roller 22 abuts against the linen fabric 2. Under the tension of the linen fabric 2, the slide bar 21 moves and drives the guide head 38 to contact the dynamometer 37. The dynamometer 37 transmits the signal to the controller. At this time, the staff can see the tension of the linen fabric 2 on both sides of the pressure roller 15 through the control panel 8, so as to judge whether it is necessary to adjust the tension of the linen fabric 2, so as to avoid poor quality after pre-shrinkage due to inappropriate tension of the linen fabric 2.

[0038] The slide bar 21 is provided with a guide head 38 at one end which is also fixedly connected to a push rod 19, and the guide head 38 is located in the middle position of the push rod 19, and the end of the push rod 19 away from the slide bar 21 slides through the slide seat 13 and is fixedly connected to a piston member 36, and a differential pressure sensor 29 is fixedly connected to a slide block 10, and connecting pipes 20 are installed on both sides of the differential pressure sensor 29, and the other end of the connecting pipe 20 penetrates through the interior of the slide block 10 and the connecting seat 16 and then extends to the outside and is fixedly connected to a sealing box 18, the interior of the sealing box 18 is hollow, and the end of the piston member 36 away from the push rod 19 is slidably connected to the interior of the sealing box 18, and a one-way valve is also installed on the sealing box 18, and the one-way valve allows gas to flow into the sealing box 18 only from the outside of the sealing box 18, the differential pressure sensor 29 is electrically connected to the controller, and a single-sided detection component is also provided on the abutment frame 47.

[0039] When the roller 22 is in contact with the linen fabric 2, the slide bar 21 moves under the tension of the linen fabric 2 and also pushes the push rod 19 to move. The push rod 19 drives one end of the piston 36 to move in the sealing box 18, thereby squeezing the gas in the sealing box 18. After being squeezed, the gas flows to the pressure difference sensor 29 through the connecting pipe 20. When the tension of the linen fabric 2 on both sides of the pressure roller 15 is inconsistent, the pressure of the connecting pipes 20 on both sides flowing to the pressure difference sensor 29 will also be different. At this time, the pressure difference sensor 29 transmits a signal to the controller. When the pressure difference exceeds a certain range, the controller controls the sound and light alarm of the corresponding color on the control panel 8 to sound an alarm, thereby reminding the staff that the tension of the linen fabric 2 on both sides of the pressure roller 15 is different.

[0040] The single-sided detection component includes an abutment plate 11, a measuring block 23, and a measuring rod 41. Two measuring rods 41 are provided. Two abutment plates 11 are provided and are respectively fixed to the two ends of the abutment frame 47. One end of the measuring rod 41 close to the linen fabric 2 slides through the abutment plate 11, and the other end of the measuring rod 41 is fixed to the measuring block 23. A laser transmitter is provided on one measuring block 23, and a laser receiver is provided on the other measuring block 23. The outer sleeve of the measuring rod 41 is provided with a spring 24, and the spring 24 is fixed between the measuring block 23 and the abutment plate 11.

[0041] When the roller 22 abuts against the linen fabric 2, under the action of the spring 24, the end of the measuring rod 41 abuts against the linen fabric 2. When the linen fabric 2 on the same side is fed in an inclined state, the measuring rods 41 at both ends of the linen fabric 2 extend to different lengths, and the laser transmitter on one measuring block 23 and the laser receiver on the other measuring block 23 will be staggered. The controller receives the signal and controls the sound and light alarm of the corresponding color to sound an alarm, thereby reminding the staff that the feeding state of the linen fabric 2 is inclined relative to the pressure roller 15, and adjustment is needed to avoid wrinkles or twists in the subsequent pre-shrinking of the linen fabric 2, which affects the quality of pre-shrinking.

[0042] At the same time, when the motor 7 is started, it can drive the threaded rod 9 to rotate, the threaded rod 9 drives the slider 27 to move, and the slider 27 synchronously drives the slider 10 to move. Since the slider 10 is provided with a double-sided detection mechanism and a single-sided detection component, it can drive the roller 22 and the measuring rod 41 to move along the linen fabric 2, thereby increasing the detection range of the linen fabric 2 and ensuring the accuracy of the tension and inclination detection of the linen fabric 2.

[0043] The bilateral detection mechanism includes a connecting block 5, a measuring rod 24, a gas spring 45, a slide 25 and a gear 34. One end of the measuring rod 24 passes through the side wall of the top plate 28 and is installed with a flexible pressure sensor. The other end of the measuring rod 24 is fixedly connected to the connecting block 5. The connecting block 5 and the side wall of the top plate 28 are fixedly connected to the two ends of the gas spring 45. The side walls of the two measuring rods 24 located on the same rod body of the top plate 28 are respectively provided with a laser transmitter and a laser receiver. The connecting block 5 is provided with a plurality of slides 25. The inside of the slide 25 is slidably connected with a sliding tooth 46. One end of the sliding tooth 46 is meshed and connected with the gear 34, and the other end is fixedly connected with a magnet 242. The bottom wall of the slide 25 is fixedly connected with a magnet 140. A spring 243 is fixedly connected between the magnet 140 and the magnet 242. A fixing rod 43 is also fixedly connected to the side wall of the top plate 28. A motor 35 is installed on the fixing rod 43. The output end of the motor 35 is fixedly connected to the gear 34.

[0044] When the linen fabric 2 begins to be pre-shrinked, the linen fabric 2 is continuously fed, and the motor 35 is started at this time. The output shaft of the motor 35 drives the gear 34 to rotate. Since the gear 34 is meshed with the sliding tooth 46, it will drive the connecting block 5 to move. When the connecting block 5 moves, it drives the measuring rod 2 44 to approach the edge of the linen fabric 2 until the flexible pressure sensor at the end of the measuring rod 2 44 contacts the edge of the linen fabric 2. The flexible pressure sensor transmits a signal to the controller. The magnet 1 40 is an electromagnet, and the magnet 1 40 is electrically connected to the delay switch. The controller energizes the magnet 1 40 through the delay switch. When the magnet 1 40 is energized, it will attract the magnet 2 42. The magnet 2 42 drives the sliding tooth 46 to slide into the inside of the slide groove 25, and the gear 34 and the sliding tooth 46 is no longer engaged, and at this time, the measuring rod 44 is driven by the gas spring 45 to slowly move away from the linen fabric 2. From the time when the flexible pressure sensor of the measuring rod 44 contacts the edge of the linen fabric 2 to the time when the measuring rod 44 slowly moves back to its original position under the action of the gas spring 45, if the edges of the linen fabric 2 on both sides of the pressure roller 15 are not aligned, the laser transmitters and laser receivers on the two measuring rods 44 will also be staggered. At this time, the controller receives a signal, and the controller controls the sound and light alarm of the corresponding color to sound an alarm, reminding the staff that the edges of the linen fabric 2 on both sides of the pressure roller 15 are not aligned and need to be adjusted to prevent the subsequent pre-shrinkage treatment of the linen fabric 2 from causing wrinkles or distortions, thereby affecting the quality of the pre-shrinkage treatment.

[0045] After the connecting block 5 is completely reset, the delay switch automatically controls the magnet 1 40 to cut off the power, and the magnet 2 42 extends out of the slide slot 25 under the action of the spring 2 39 to mesh with the gear 34 again. Since the gear 34 rotates continuously, it will drive the connecting block 5 to detect whether the edges of the linen fabric 2 on both sides of the pressure roller 15 are aligned again, so as to intermittently detect whether the edges of the linen fabric 2 on both sides of the pressure roller 15 are aligned during the entire pre-shrinkage process of the linen fabric 2, so as to avoid wrinkles or distortions in the subsequent pre-shrinkage process of the linen fabric 2, which will affect the quality of the pre-shrinkage process.

[0046] The gas spring 45 is used because the movement of the gas spring 45 is relatively slow, which can improve the stability of laser reception between the laser transmitter and the laser receiver, and avoid the situation when using an ordinary spring, where the laser transmitter and the laser receiver move faster due to faster movement, resulting in a shorter laser signal receiving time for the laser transmitter and the laser receiver, low stability, and reduced accuracy of the detection result.

[0047] When the device is actually used, before the pre-shrinkage treatment is performed, when the motor 2 17 is started, the threaded rod 2 14 is driven to rotate, and the slide seat 13 and the slide rod 21 cooperate until the roller 22 contacts the linen fabric 2. Under the tension of the linen fabric 2, the slide rod 21 moves and drives the guide head 38 to contact the dynamometer 37. The dynamometer 37 transmits the signal to the controller. At this time, the staff can see the tension of the linen fabric 2 on both sides of the pressure roller 15 through the control panel 8, so as to judge whether it is necessary to adjust the tension of the linen fabric 2, so as to avoid the poor quality of the pre-shrinkage treatment caused by the inappropriate tension of the linen fabric 2. When the roller 22 contacts the linen fabric 2, the slide rod 21 and the push rod 19 cooperate to drive one end of the piston 36 to move in the sealing box 18, thereby squeezing the sealing box. The gas in 18 flows to the pressure difference sensor 29 through the connecting pipe 20 after being squeezed. When the tension of the linen fabric 2 on both sides of the pressure roller 15 is inconsistent, the pressure of the connecting pipes 20 on both sides flowing to the pressure difference sensor 29 will also be different. At this time, the pressure difference sensor 29 transmits a signal to the controller. When the pressure difference exceeds a certain range, the controller controls the sound and light alarm of the corresponding color on the control panel 8 to sound an alarm, thereby reminding the staff that the tension of the linen fabric 2 on both sides of the pressure roller 15 is different and needs to be adjusted. The single-sided detection component detects whether the feeding state of the linen fabric 2 is tilted relative to the pressure roller 15, thereby sounding an alarm through the sound and light alarm of the corresponding color, thereby reminding the staff to avoid wrinkles or twists in the subsequent pre-shrinkage of the linen fabric 2, which affects the quality of pre-shrinkage.

[0048] Then, when the cloth guide roller 31 and the pressure roller 15 rotate, the linen fabric 2 is pre-shrunk under the squeezing action of the pressure roller 15, the rubber blanket 30 and the cloth guide roller 31, and the linen fabric 2 is continuously fed. At this time, the motor 35 is started, and the gear 34 and the sliding tooth 46 cooperate to drive the measuring rod 2 44 to approach the edge of the linen fabric 2 until the flexible pressure sensor at the end of the measuring rod 2 44 contacts the edge of the linen fabric 2. The flexible pressure sensor transmits a signal to the controller, and the controller immediately energizes the magnet 1 40 through the delay switch. When the magnet 1 40 is energized, it will attract the magnet 2 42. The magnet 2 42 drives the sliding tooth 46 to slide into the inside of the slide groove 25, and the gear 34 and the sliding tooth 46 are no longer meshed. Under the action of the gas spring 45, the rod 44 drives the measuring rod 44 to move slowly in the direction away from the linen fabric 2. From the time when the flexible pressure sensor of the measuring rod 44 contacts the edge of the linen fabric 2 to the time when the measuring rod 44 slowly moves and resets under the action of the gas spring 45, if the edges of the linen fabric 2 on both sides of the pressure roller 15 are not aligned, the laser transmitters and laser receivers on the two measuring rods 44 will also be staggered. At this time, the controller receives the signal, and the controller controls the sound and light alarm of the corresponding color to sound an alarm, reminding the staff that the edges of the linen fabric 2 on both sides of the pressure roller 15 are not aligned and need to be adjusted to prevent the subsequent pre-shrinkage treatment of the linen fabric 2 from causing wrinkles or distortion, thereby affecting the quality of the pre-shrinkage treatment.

[0049] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A preshrinking machine for producing linen fabrics, comprising a pressure roller (15), a fixed seat (1), a rubber blanket (30), a cloth guide roller (31), a cloth feed roller (32), and a control panel (8), wherein the pressure roller (15) is fixedly connected to a connecting shaft (26), three cloth guide rollers (31) are provided, two of which are distributed on the left and right sides of the pressure roller (15), and another cloth guide roller (31) is arranged directly below the pressure roller (15), the rubber blanket (30) is rotatably sleeved between the pressure roller (15) and the cloth guide roller (31), two cloth feed rollers (32) are provided, and the two cloth feed rollers (32) are arranged on the left and right sides above the pressure roller (15), a linen fabric (2) is wound around the left cloth feed roller (32), one end of the linen fabric (2) enters from between the rubber blanket (30) and the pressure roller (15), and passes through another cloth feed roller (32) after exiting, characterized in that: The upper end of the fixing seat (1) is fixedly connected to a connecting frame (3), a connecting hole cooperating with a connecting shaft (26) is provided at a central position below the connecting frame (3), the connecting shaft (26) rotatably cooperates with the connecting frame (3) through the connecting hole, the upper end and the middle of the connecting frame (3) are respectively fixedly connected to a top plate (28) and a bottom plate (4), a threaded rod (9) is rotatably connected between the top plate (28) and the bottom plate (4), a slider (27) is threadedly connected to the threaded rod (9), a slider (10) is fixedly connected to the end of the slider (27) away from the threaded rod (9), a double-sided detection mechanism is provided on the slider (10), and a double-sided detection mechanism is provided on the top plate (28); The control panel (8) is fixedly connected to the top plate (28), a controller is installed inside the control panel (8), and a plurality of sound and light alarms of different colors are installed outside the control panel (8). The double-sided detection mechanism comprises a connecting seat (16), a second threaded rod (14), a sliding seat (13), a roller (22), and a pressure difference sensor (29). The two sides of the first sliding block (10) are symmetrically fixedly connected to the connecting seat (16), and two brackets (6) are fixedly connected to the connecting seat (16). The second threaded rod (14) is rotatably installed on the upper bracket (6). The second motor (17) is also fixedly connected to the connecting seat (16), and the output end of the second motor (17) is fixedly connected to the second threaded rod (14). The second guide rod (12) is fixedly installed on the lower bracket (6), and one end of the second guide rod (12) is fixedly connected to the bracket (6). The upper side of the sliding seat (13) is threadedly connected to the second threaded rod (14), and the lower side of the sliding seat (13) is slidably connected to the second guide rod (12); The interior of the slide seat (13) is hollow and slidably connected to a slide rod (21); one end of the slide rod (21) passes through the slide seat (13) and is fixedly connected to an abutment frame (47); a roller (22) is rotatably mounted inside the abutment frame (47); one end of the slide rod (21) located inside the slide seat (13) is fixedly connected to a guide head (38); a dynamometer (37) is fixedly connected to a side wall of the slide seat (13) away from the slide rod (21); and the dynamometer (37) is electrically connected to a controller.

2. A preshrinking machine for producing linen fabrics according to claim 1, characterized in that: The slide bar (21) is provided with a guide head (38) at one end thereof and is also fixedly connected to a push rod (19). The guide head (38) is located in the middle position of the push rod (19). The end of the push rod (19) away from the slide bar (21) slides through the slide seat (13) and is fixedly connected to a piston member (36). The differential pressure sensor (29) is fixedly connected to the slide bar (10). Connecting pipes (20) are installed on both sides of the differential pressure sensor (29). The other end of the connecting pipe (20) penetrates through the interior of the slide bar (10) and the connecting seat (16) and then extends to the outside and is fixedly connected to a sealing box (18). The interior of the sealing box (18) is hollow. The end of the piston member (36) away from the push rod (19) is slidably connected to the interior of the sealing box (18). A one-way valve is also installed on the sealing box (18). The one-way valve allows gas to flow into the sealing box (18) only from the outside. The differential pressure sensor (29) is electrically connected to the controller. A single-sided detection component is also provided on the abutment frame (47).

3. A preshrinking machine for producing linen fabrics according to claim 2, characterized in that: The single-sided detection assembly comprises an abutment plate (11), a measuring block (23), and a measuring rod (41). Two measuring rods (41) are provided. The abutment plate (11) is provided with two measuring rods, which are respectively fixed to two ends of an abutment frame (47). One end of the measuring rod (41) close to the linen fabric (2) slides through the abutment plate (11). The other end of the measuring rod (41) is fixed to a measuring block (23). One measuring block (23) is provided with a laser transmitter, and the other measuring block (23) is provided with a laser receiver. A spring (24) is provided on the outer sleeve of the measuring rod (41). The spring (24) is fixed between the measuring block (23) and the abutment plate (11).

4. A preshrinking machine for producing linen fabrics according to claim 3, characterized in that: A motor (7) is also fixedly connected to the top plate (28), an output end of the motor (7) is fixedly connected to a threaded rod (9), guide rods (33) are provided on both sides of the threaded rod (9), two guide rods (33) are fixedly connected between the top plate (28) and the bottom plate (4), the top plate (28) is in the shape of an "I", the linen fabric (2) is engaged on both sides of the top plate (28), and bilateral detection mechanisms are installed on the four ends of the top plate (28).

5. A preshrinking machine for producing linen fabrics according to claim 4, characterized in that: The bilateral detection mechanism comprises a connecting block (5), a second measuring rod (44), a gas spring (45), a slide groove (25) and a gear (34); one end of the second measuring rod (44) passes through the side wall of the top plate (28) and is provided with a flexible pressure sensor; the other end of the second measuring rod (44) is fixedly connected to the connecting block (5); the connecting block (5) and the side wall of the top plate (28) are fixedly connected to the two ends of the gas spring (45); a laser transmitter and a laser receiver are respectively provided on the side walls of the two second measuring rods (44) located on the same rod body of the top plate (28); and a plurality of slide grooves (25) are provided on the connecting block (5).

6. A preshrinking machine for producing linen fabrics according to claim 5, characterized in that: The slide groove (25) is internally slidably connected with a slide tooth (46), one end of the slide tooth (46) is meshed with the gear (34), and the other end is fixedly connected with a second magnet (42), the bottom wall of the slide groove (25) is fixedly connected with a first magnet (40), a second spring (39) is fixedly connected between the first magnet (40) and the second magnet (42), and a fixing rod (43) is also fixedly connected to the side wall of the top plate (28), a third motor (35) is mounted on the fixing rod (43), and the output end of the third motor (35) is fixedly connected to the gear (34).

7. A preshrinking machine for producing linen fabrics according to claim 6, characterized in that: The laser transmitter, the laser receiver and the flexible pressure sensor are all electrically connected to the controller.

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