Production equipment and production process of all-cotton composite flame-retardant fabric

Abstract

The invention relates to the technical field of all-cotton composite flame-retardant fabric production, in particular to all-cotton composite flame-retardant fabric production equipment and a production process, comprising a machine body for mounting a lifting frame, a storage cavity formed in the machine body and used for storing an environment-friendly flame retardant, and a mounting bracket mounted on the lifting frame, the first support plate and the second support plate are arranged on the mounting bracket, the rotating shaft is arranged between the first support plate and the second support plate, and the cylindrical fabric is spirally mounted on a shaft body of the rotating shaft. The barrel-shaped fabric is installed through the rotating shaft, when the barrel-shaped fabric makes contact with a flame retardant solution, the barrel-shaped fabric is controlled through the rotating shaft to rotate at a high speed, in the rotating process, centrifugal force exhausts air in the fabric outwards, the flame retardant solution permeates into fibers under the action of the centrifugal force, and the flame retardant solution is dispersed into the fibers; the permeation effect of the flame retardant solution on the cylindrical fabric is favorably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of production of all-cotton composite flame-retardant fabrics, and in particular to production equipment and a production process of all-cotton composite flame-retardant fabrics. Background Art

[0002] Pure cotton flame retardant fabric is a flame retardant fabric made from pure cotton dyed cloth through flame retardant process. It includes pure cotton flame retardant plain cloth, pure cotton flame retardant twill, pure cotton flame retardant straight cloth and pure cotton flame retardant canvas.

[0003] The existing cotton flame retardant fabrics have the following problems in the production process: After production, most fabrics are rolled into tubes for the sake of regularity. This also results in many gaps between the outer and inner layers of the fabric, which in turn prevents the flame retardant solution from effectively penetrating inward. A long soaking time is required to complete the soaking operation of the fabric. After the fabric is taken out after soaking, the outer layer of the fabric will absorb too much flame retardant solution due to the long soaking time. During the process of taking out the fabric, the excess flame retardant solution will drip downward under the action of gravity, causing significant pollution to the working environment. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the flame retardant solution cannot effectively penetrate into the interior, and to propose a production device and a production process for an all-cotton composite flame retardant fabric.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A production equipment for all-cotton composite flame-retardant fabrics, comprising: A body for mounting two symmetrically arranged lifting frames; A storage cavity provided on the machine body and used for storing an environmentally friendly flame retardant; a mounting bracket mounted on the lifting frame; a first support plate and a second support plate disposed on the mounting bracket; a rotating shaft disposed between the first support plate and the second support plate; The tubular fabric is spirally mounted on the rotating shaft.

[0006] Preferably, the lifting frame consists of a gantry, a lifting mechanism and a guide mechanism.

[0007] Preferably, a material receiving box is slidably mounted on the lower end of the storage chamber, the inner wall of the material receiving box is inclined toward the center position, and a filter is provided at the center position of the material receiving box. A discharge pipe connected to the storage chamber is fixedly connected to the machine body, and the input end of the discharge pipe corresponds to the upper and lower parts of the filter, and the inner wall of the upper end of the storage chamber is inclined.

[0008] Preferably, the second support plate is rotatably mounted on a mounting bracket, the mounting bracket is provided with a mounting cavity near the second support plate, and a first motor for driving the second support plate to rotate is installed in the mounting cavity.

[0009] Preferably, the first and second plywood are installed on the pins on both sides of the mounting bracket, the lower end of the first plywood is fixed with a flexible scraper that abuts against the tubular fabric, and the lower end of the second plywood is fixed with an infrared dryer for drying the tubular fabric.

[0010] Preferably, the mounting bracket is provided with a driving component for driving the first and second closing plates to open and close.

[0011] Preferably, the drive assembly comprises: A mounting slot provided on the mounting bracket; a second motor fixedly mounted on the mounting bracket; a driving gear fixedly mounted on the output end of the second motor and located in the mounting slot; two driven racks located in the mounting slots and meshing with the driving gear; A slider slidably mounted on the first plywood and the second plywood; A pin is connected to a connecting rod between the slider and the driven rack.

[0012] Preferably, the two driven racks are symmetrically distributed on both sides of the driving gear with the driving gear axis as the center, the two driven racks are in the same plane, the tooth surfaces of the two driven racks are opposite, and the two driven racks form bilateral meshing with the teeth of the driving gear.

[0013] Preferably, the rotating shaft is composed of a driving motor and a shaft body with a threaded outer wall.

[0014] Preferably, a production process of a production equipment for producing all-cotton composite flame-retardant fabrics comprises the following steps: Step S1: Start the first motor to drive the second support plate to deflect upward, thread the tubular fabric on the rotating shaft so that the tubular fabric and the first support plate are offset against each other, and control the second support plate to return to its original position and offset against the tubular fabric by the first motor; Step S2: activating the lifting mechanism to control the mounting bracket to move vertically downward, so that the cylindrical fabric enters the storage chamber. Simultaneously, activating the drive motor causes the rotating shaft to rotate the cylindrical fabric through the shaft body. The centrifugal force generated by the high-speed rotation rapidly discharges the air inside the cylindrical fabric, forming a negative pressure environment, forcing the flame retardant solution to penetrate from the outer layer of the fabric to the inner layer. The lifting mechanism is activated to control the mounting bracket to move vertically upward. At this time, the tubular fabric is away from the environmentally friendly flame retardant, but is still located in the storage chamber. The drive motor is activated to control the shaft to rotate at high speed, and the centrifugal force generated by the rotation is used to throw away the excess flame retardant solution on the tubular fabric. Step S3: Start the lifting mechanism to control the mounting bracket to move vertically upward. At this time, the tubular fabric is located above the storage chamber. Start the second motor to control the rotation of the driving gear. The driving gear drives the two driven racks to move outward toward each other. The driven rack drives the upper end of the connecting rod to move linearly. The connecting rod forces the first and second plywood to close inward through the slider, so that the flexible scraper and the tubular fabric are in contact. At this time, the infrared dryer corresponds to the tubular fabric. Start the infrared dryer to dry the tubular fabric. At the same time, start the driving motor to control the shaft to drive the tubular fabric to rotate at a uniform speed, so as to ensure that the tubular fabric is heated evenly. Step S4: After the outer layer of the tubular fabric is dried, the first motor is started to drive the second support plate to deflect upward, rotating the tubular fabric so that the tubular fabric is no longer threadedly connected to the rotating shaft, and then the tubular fabric is removed.

[0015] Compared with the prior art, the present invention has the following advantages: 1. In the present invention, the cylindrical fabric is installed by a rotating shaft. When the cylindrical fabric contacts the flame retardant solution, the cylindrical fabric is controlled by the rotating shaft to rotate at high speed. During the rotation, the centrifugal force discharges the air inside the fabric to the outside, and the flame retardant solution penetrates into the fiber under the action of centrifugal force, which helps to improve the penetration effect of the flame retardant solution into the cylindrical fabric.

[0016] 2. In the present invention, the cylindrical fabric is controlled to rotate by the rotating shaft, and the excess flame retardant solution can be thrown out and blocked by the inclined part of the upper end of the storage chamber to protect the hygiene of the working environment. At the same time, the thrown flame retardant solution flows back to the storage chamber under the action of gravity, thereby reducing the loss of the flame retardant solution during use.

[0017] 3. The present invention adopts non-contact heating combined with a flexible scraper to avoid direct burning and damage to the tubular fabric. At the same time, by drying the tubular fabric, it prevents the workers from being contaminated by the flame retardant solution when disassembling the tubular fabric, thereby preventing the workers from being contaminated by the flame retardant solution and having a negative impact on the uniformity of the flame retardant solution when it adheres to the tubular fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure proposed by the present invention; Figure 2 For the present invention Figure 1 The cross-sectional view proposed in Figure 3This is a schematic diagram of the connection structure of the mounting bracket, the first support plate, the second support plate, the first plywood, the second plywood and the drive assembly proposed in the present invention; Figure 4 For the present invention Figure 3 The side sectional view proposed in; Figure 5 For the present invention Figure 3 The upper cross-sectional view proposed in the figure; Figure 6 For the present invention Figure 5 Schematic diagram of the locally enlarged structure of A proposed in.

[0019] In the picture: 1. Lifting frame; 2. Machine body; 3. Storage chamber; 301. Material receiving box; 302. Filter; 303. Discharge pipe; 4. Mounting bracket; 401. Mounting chamber; 402. First motor; 5. First support plate; 6. Second support plate; 7. Rotating shaft; 8. Tubular fabric; 9. First plywood; 901. Flexible scraper; 10. Second plywood; 1001. Infrared dryer; 11. Driving assembly; 1101. Mounting slot; 1102. Second motor; 1103. Driving gear; 1104. Driven rack; 1105. Slider; 1106. Connecting rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figures 1-6 A production device and production process for all-cotton composite flame-retardant fabrics includes a lifting frame 1, a machine body 2, a storage chamber 3, a mounting bracket 4, a first support plate 5, a second support plate 6, a rotating shaft 7, a tubular fabric 8, a first plywood 9, a second plywood 10, and a drive assembly 11. The components are arranged as follows: The machine body 2 is used to install two symmetrically arranged lifting frames 1. The lifting frames 1 are composed of a gantry, a lifting mechanism and a guide mechanism.

[0022] The storage chamber 3 is provided on the body 2 and is used to store environmentally friendly flame retardants. A material receiving box 301 is slidably mounted on the lower end of the storage chamber 3. The inner wall of the material receiving box 301 is tilted toward the center, so that the flame retardant solution is gathered to the center of the material receiving box 301 under the action of gravity, and a filter screen 302 is provided at the center of the material receiving box 301. A discharge pipe 303 connected to the storage chamber 3 is fixedly connected to the body 2, and the input end of the discharge pipe 303 corresponds to the filter screen 302 up and down. The filter screen 302 is used to achieve solid-liquid separation, so that impurities in the flame retardant solution will not enter the discharge pipe 303 with the liquid. The inner wall of the upper end of the storage chamber 3 is tilted. It should be noted that a valve body is provided on the discharge pipe 303. The mounting bracket 4 is mounted on the lifting frame 1, so that the mounting bracket 4 has height adjustment performance. The first support plate 5 is fixedly set on the mounting bracket 4, and the second support plate 6 is rotatably mounted on the mounting bracket 4. The mounting bracket 4 has a mounting cavity 401 formed near the second support plate. A first motor 402 for driving the second support plate 6 to rotate is installed in the mounting cavity 401, so that the second support plate 6 has rotation performance; The rotating shaft 7 is arranged between the first support plate 5 and the second support plate 6. The rotating shaft 7 is composed of a driving motor and a shaft body with a thread on the outer wall. The cylindrical fabric 8 is spirally installed on the rotating shaft 7, so that the cylindrical fabric 8 is detachable. At the same time, the rotating shaft 7 can drive the cylindrical fabric 8 to rotate through the thread, so that when the cylindrical fabric 8 is immersed in the flame retardant solution, the penetration efficiency can be improved by driving the cylindrical fabric 8 to rotate at high speed. The specific principle is that the centrifugal force generated by the rotation quickly discharges the air inside the cylindrical fabric 8 to form a negative pressure environment, forcing the flame retardant solution to penetrate from the outer layer of the fabric to the inner layer. The direction of the centrifugal force is perpendicular to the axis of the fabric. The flame retardant is evenly distributed in the radial direction, which can avoid the problem of insufficient local penetration caused by gravity or uneven pressure in the traditional impregnation process. During the rotation, the centrifugal force can push the flame retardant solution into the fiber pores and yarn gaps, significantly improving the adhesion depth of the flame retardant inside the fiber. Even if a low-viscosity flame retardant is used, the centrifugal force can still ensure that the solution is fully penetrated, reducing the waste of the agent. The centrifugal force is a non-contact pressure, which avoids fiber breakage or surface fuzzing caused by friction. The tubular fabric 8 is in a free stretch state during the rotation process, and no high-tension traction is required, reducing the risk of fabric deformation. At the same time, when the tubular fabric 8 is away from the flame retardant solution but still in the storage chamber 3, the tubular fabric 8 is driven to rotate, and the excess flame retardant on the surface of the tubular fabric 8 is thrown out during the centrifugal process, reducing the subsequent drying energy consumption, and blocking these flame retardant solutions through the inclined part of the upper end of the storage chamber 3, and allowing these flame retardant solutions to flow back into the storage chamber 3 under the action of gravity.

[0023] The first plywood 9 and the second plywood 10 are installed on the pins on both sides of the mounting bracket 4. The lower end of the first plywood 9 is fixed with a flexible scraper 901 that is against the tubular fabric 8. The excess flame retardant solution is thrown off by the centrifugal force generated by the rotation. However, after the rotation is completed, the flame retardant solution causes uneven flame retardant solution on the outer layer of the tubular fabric 8 due to inertia. Therefore, before drying, a flexible scraper 901 is used to offset the tubular fabric 8 to scrape off excess flame retardant solution on the outer layer of the tubular fabric 8 through the flexible scraper 901, so as to ensure the uniformity of the thickness of the tubular fabric 8 after drying. When the fabric is not scraped flat, the liquid-enriched area is prone to heat stress concentration due to the difference in evaporation rate, causing wrinkles or shrinkage. The flexible scraper The plate 901 eliminates the accumulation of droplets by applying uniform pressure, ensuring the flatness of the tubular fabric 8 after drying. The flexible scraper 901 is made of high-temperature resistant silicone to avoid fiber breakage or surface fuzzing during the scraping process. The lower end of the second plywood 10 is fixedly installed with an infrared dryer 1001 for drying the tubular fabric 8. Infrared rays are used to directly penetrate the surface of the tubular fabric 8 to heat the internal fibers and flame retardant solution, shortening the drying time. At the same time, infrared radiation is non-contact heating, thereby avoiding mechanical friction on the tubular fabric 8 during drying, further reducing the risk of fiber breakage, and ensuring the stability of the flame retardant solution on the tubular fabric 8, thereby preventing the staff from being contaminated by the flame retardant solution when disassembling the tubular fabric 8.

[0024] Based on the arrangement of the mounting bracket 4, in order to prevent the first plywood 9 and the second plywood 10 from causing negative impacts during the penetration of the tubular fabric 8, a driving assembly 11 is provided on the mounting bracket 4 for driving the first plywood 9 and the second plywood 10 to open and close. The driving assembly 11 includes a mounting slot 1101, a second motor 1102, a driving gear 1103, a driven rack 1104, a slider 1105, and a connecting rod 1106. The components are arranged as follows: The mounting groove 1101 is opened on the mounting bracket 4, the second motor 1102 is fixedly mounted on the mounting bracket 4, the driving gear 1103 is fixedly mounted on the output end of the second motor 1102 and is located in the mounting groove 1101, the two driven racks 1104 are located in the mounting groove 1101 and meshed with the driving gear 1103, the two driven racks 1104 are slidably connected to the mounting groove 1101 by means of a slide groove, and the two driven racks 1104 are symmetrically distributed on the driving gear 1103 axis. On both sides of the driven gear 1103, the two driven racks 1104 are in the same plane, the tooth surfaces of the two driven racks 1104 are opposite, and the two driven racks 1104 form a bilateral engagement with the teeth of the driving gear 1103. The two sliders 1105 are slidably installed on the first clamping plate 9 and the second clamping plate 10 by means of a sliding groove, which helps to reduce the load brought by the additional driven racks 1104 and sliders 1105. The connecting rod 1106 is pin-connected between the slider 1105 and the driven rack 1104.

[0025] The present invention can be explained through the following operation mode: Step S1: Start the first motor 402 to drive the second support plate 6 to deflect upward, and screw the tubular fabric 8 onto the rotating shaft 7 so that the tubular fabric 8 and the first support plate 5 are movable against each other. The first motor 402 controls the second support plate 6 to return to its original position and to move against the tubular fabric 8. Step S2: Start the lifting mechanism to control the mounting bracket 4 to move vertically downward, so that the tubular fabric 8 enters the storage chamber 3. Simultaneously, start the drive motor so that the rotating shaft 7 drives the tubular fabric 8 to rotate through the shaft body. The centrifugal force generated by the high-speed rotation quickly discharges the air inside the tubular fabric 8, forming a negative pressure environment, forcing the flame retardant solution to penetrate from the outer layer of the fabric to the inner layer. The lifting mechanism is started to control the mounting bracket 4 to move vertically upward. At this time, the tubular fabric 8 is away from the environmentally friendly flame retardant, but is still located in the storage chamber 3. The drive motor is started to control the shaft to rotate at high speed, and the centrifugal force generated by the rotation is used to throw away the excess flame retardant solution on the tubular fabric 8. Step S3, start the lifting mechanism to control the mounting bracket 4 to move vertically upward. At this time, the tubular fabric 8 is located above the storage chamber 3. Start the second motor 1102 to control the driving gear 1103 to rotate. The driving gear 1103 drives the two driven racks 1104 to move outward toward each other. The driven racks 1104 drive the upper end of the connecting rod 1106 to move linearly. The connecting rod 1106 forces the first plywood 9 and the second plywood 10 to close inward through the slider 1105, so that the flexible scraper 901 is against the tubular fabric 8. At this time, the infrared dryer 1001 corresponds to the tubular fabric 8. Start the infrared dryer 1001 to perform infrared radiation drying on the tubular fabric 8. At the same time, start the driving motor to control the shaft to drive the tubular fabric 8 to rotate at a uniform speed, so as to ensure that the tubular fabric 8 is heated evenly. In step S4, after the outer layer of the tubular fabric 8 is dried, the first motor 402 is started to drive the second support plate 6 to deflect upward and rotate the tubular fabric 8 so that the tubular fabric 8 is no longer threadedly connected to the rotating shaft 7, and the tubular fabric 8 is then removed.

[0026] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A production equipment for all-cotton composite flame-retardant fabrics, characterized in that: include: A body (2) for mounting two symmetrically arranged lifting frames (1); A storage cavity (3) provided on the machine body (2) and used for storing an environmentally friendly flame retardant; A mounting bracket (4) mounted on the lifting frame (1); A first support plate (5) and a second support plate (6) arranged on the mounting bracket (4); a rotating shaft (7) disposed between the first support plate (5) and the second support plate (6); A tubular fabric (8) is spirally mounted on the shaft of the rotating shaft (7).

2. The production equipment of a pure cotton composite flame retardant fabric according to claim 1, characterized in that: The lifting frame (1) consists of a gantry, a lifting mechanism and a guide mechanism.

3. The production equipment of a pure cotton composite flame retardant fabric according to claim 2, characterized in that: A material receiving box (301) is slidably mounted on the lower end of the storage chamber (3), the inner wall of the material receiving box (301) is tilted toward the center, and a filter screen (302) is provided at the center of the material receiving box (301). A discharge pipe (303) communicating with the storage chamber (3) is fixedly connected to the machine body (2), and the input end of the discharge pipe (303) corresponds to the filter screen (302) in upper and lower positions. The inner wall of the upper end of the storage chamber (3) is tilted.

4. The production equipment of a pure cotton composite flame retardant fabric according to claim 3, characterized in that: The second support plate (6) is rotatably mounted on the mounting bracket (4); the mounting bracket (4) is provided with a mounting cavity (401) near the second support plate (6); a first motor (402) for driving the second support plate (6) to rotate is installed in the mounting cavity (401).

5. The production equipment of the all-cotton composite flame-retardant fabric according to claim 4, characterized in that: A first plywood (9) and a second plywood (10) are mounted on pins on both sides of the mounting bracket (4); a flexible scraper (901) is fixedly mounted on the lower end of the first plywood (9) and is in contact with the tubular fabric (8); and an infrared dryer (1001) is fixedly mounted on the lower end of the second plywood (10) for drying the tubular fabric (8).

6. The production equipment of the all-cotton composite flame-retardant fabric according to claim 5, characterized in that: The mounting bracket (4) is provided with a driving assembly (11) for driving the first plywood (9) and the second plywood (10) to perform an opening and closing movement.

7. The production equipment of the all-cotton composite flame-retardant fabric according to claim 6, characterized in that: The driving assembly (11) comprises: A mounting groove (1101) provided on the mounting bracket (4); a second motor (1102) fixedly mounted on the mounting bracket (4); a driving gear (1103) fixedly mounted on the output end of the second motor (1102) and located in the mounting slot (1101); two driven racks (1104) located in the mounting slot (1101) and meshing with the driving gear (1103); a slider (1105) slidably mounted on the first plywood (9) and the second plywood (10); A pin is connected to a connecting rod (1106) between the slider (1105) and the driven rack (1104).

8. The production equipment of the all-cotton composite flame-retardant fabric according to claim 7, characterized in that: The two driven racks (1104) are symmetrically distributed on both sides of the driving gear (1103) with the axis of the driving gear (1103) as the center. The two driven racks (1104) are in the same plane, the tooth surfaces of the two driven racks (1104) are opposite, and the two driven racks (1104) form a bilateral meshing with the teeth of the driving gear (1103).

9. The production equipment of the all-cotton composite flame-retardant fabric according to claim 8, characterized in that: The rotating shaft (7) is composed of a driving motor and a shaft body with a threaded outer wall.

10. The production process of the production equipment of the all-cotton composite flame-retardant fabric according to claim 9, characterized in that: The process comprises the following steps: Step S1, starting the first motor (402) to drive the second support plate (6) to deflect upward, threading the tubular fabric (8) on the rotating shaft (7), so that the tubular fabric (8) and the first support plate (5) are in contact with each other, and controlling the second support plate (6) to reset and to contact each other with the tubular fabric (8) by the first motor (402); Step S2, starting the lifting mechanism to control the mounting bracket (4) to move vertically downward, so that the cylindrical fabric (8) enters the storage chamber (3), and simultaneously starting the driving motor so that the rotating shaft (7) drives the cylindrical fabric (8) to rotate through the shaft body, and the centrifugal force generated by the high-speed rotation quickly discharges the air inside the cylindrical fabric (8) to the outside, forming a negative pressure environment, forcing the flame retardant solution to penetrate from the outer layer of the fabric to the inner layer; The lifting mechanism is started to control the mounting bracket (4) to move vertically upward, at which time the tubular fabric (8) is away from the environmentally friendly flame retardant but is still located in the storage chamber (3), and the driving motor is started to control the shaft to rotate at high speed, and the centrifugal force generated by the rotation is used to throw away the excess flame retardant solution on the tubular fabric (8); Step S3, start the lifting mechanism to control the mounting bracket (4) to move vertically upward, at which time the tubular fabric (8) is located above the storage chamber (3), start the second motor (1102) to control the driving gear (1103) to rotate, the driving gear (1103) drives the two driven racks (1104) to move outward in opposite directions, the driven racks (1104) drive the upper end of the connecting rod (1106) to move linearly, the connecting rod (1106) forces the first plywood (9) and the second plywood (10) to close inward through the slider (1105), so that the flexible scraper (901) and the tubular fabric (8) are in contact, and at this time the infrared dryer (1001) corresponds to the tubular fabric (8), start the infrared dryer (1001) to dry the tubular fabric (8), and at the same time start the driving motor to control the shaft to drive the tubular fabric (8) to rotate at a uniform speed, thereby ensuring that the tubular fabric (8) is heated uniformly; In step S4, after the outer layer of the tubular fabric 8 is dried, the first motor 402 is started to drive the second support plate 6 to deflect upward and rotate the tubular fabric 8 so that the tubular fabric 8 is no longer threadedly connected to the rotating shaft 7, and the tubular fabric 8 is then removed.

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