Special short-cutting device and short-cutting process for wet-process short-cut glass fibers
By designing special chopping devices for wet chopping glass fiber, including yarn, moisture control, tension and chopping equipment, the problem of difficulty in efficient chopping and hair mass is solved in traditional equipment, and efficient chopping and product quality improvement is achieved.
Patent Information
- Application Number
- CN202510158097.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-05-13
AI Technical Summary
Traditional wet chopped wet glass fiber equipment is difficult to achieve high chopping rate, resulting in the product being easily mixed with long fibers and easily producing hair balls, affecting product quality and efficiency.
A special chopping device for wet chopping glass fiber is designed, including yarn equipment, moisture control equipment, tension equipment and chopping equipment. The moisture content of glass fibers is detected and controlled in real time through the moisture control system to ensure the cutting quality, and through the cooperation of tension equipment and cutting equipment, it can achieve efficient cutting and reduce the generation of long fibers and hair masses.
It achieves efficient chopped glass fiber, reduces the generation of long fibers and hair masses, improves product quality and efficiency, and reduces the demand for human resources.
Smart Images
Figure CN119977316A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of chopped fiber preparation, and in particular to a special chopped device and chopped process for wet chopped glass fibers. Background Art
[0002] After wet chopped short fibers are chopped, they are dried in a fluidized bed to form chopped fiber products. After being sheared by a twin-screw extruder, they are used to reinforce different resins and are widely used to reinforce engineering plastics. In addition, after wet chopped short fibers are chopped and dried, they are ground to form ground fibers, which can be used to reinforce nylon, polytetrafluoroethylene, thermoplastics and thermosetting plastics. If wet chopped short fibers are kept wet after chopped, they can be formed into water-drawn wires of different specifications, which can be used in roofing waterproof materials, floor carpet substrates, thermal insulation materials, electrical insulation materials, surface felts, battery panels and filter materials.
[0003] The main problems of the traditional wet-chopped wet glass fiber chopped equipment are as follows: 1. Due to the high moisture content, low sizing agent content, and high viscosity and toughness of the wet glass fiber, it is difficult for the roller-type chopped equipment to achieve a high chopped rate, which makes it easy for long fibers to be mixed in the chopped fiber products, and they must be screened or manually sorted using a sifter; 2. The roller attachment used in the roller-type chopped equipment is very easy to adhere to and squeeze the fibers to produce dense clumps, and the sifter is easy to cause the wet glass fibers to rub against each other and produce clumps during the vibration process.
[0004] In summary, the traditional wet-chopped wet glass fiber chopped process and chopped equipment are prone to problems such as long fibers being mixed in the product and hair balls being easily generated. The long fibers need to be screened out by a sifter or manually sorted out, which has an adverse effect on the quality and efficiency of the wet glass fiber products. Therefore, it is necessary to improve the design of the wet-chopped glass fiber chopped equipment in the relevant technology. Summary of the invention
[0005] In order to solve the above problems, the present invention provides a special short-cutting device for wet-process short-cut glass fiber, which overcomes the defect that the existing short-cutting equipment is difficult to achieve a high short-cutting rate, establishes a moisture control system to realize real-time detection and real-time control of the moisture content of the product, and solves the problem of hair balls generated by the roller attachment of the hob-type short-cutting machine and the screening of the screener from the root, reduces the human resources for preparing the product, realizes precise control of the moisture content of the product, and greatly stabilizes and improves the product quality of such short-cut glass fiber raw yarns.
[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a special short-cutting device for wet-chopped glass fibers, comprising a creel device for ensuring the orderliness of glass fiber feeding, a moisture control device for controlling the moisture content of glass fiber precursors, a tension device for providing tension for wet glass fiber precursors, and a short-cutting device for short-cutting wet glass fibers passing through the tension device; the creel device comprises a creel frame body and a water tank fixed on the top of the creel frame body, the top of the water tank is open, and corresponding positions on the side walls on both sides of the water tank are provided with multiple rows of guide eyes for the glass fiber precursors to pass through; a gantry is provided on one side of the creel frame body, the moisture control device comprises an online moisture detector fixed on the gantry and used to monitor the moisture content of wet glass fiber precursors passing through the tension device, and a spray pipe fixed on the top of the water tank and connected to an external water supply system, and a plurality of spray nozzles are evenly arranged at the bottom of the spray pipe; the wet glass fibers short-cut by the short-cutting device can be directly packaged and shipped.
[0007] By adopting the above technical scheme, the creel equipment can ensure the orderliness of glass fiber feeding, the tension equipment can provide tension for wet glass fiber raw yarns, the moisture control equipment monitors the moisture content of the wet glass fiber raw yarns, feeds the monitoring information back to the control system of the short-cut device dedicated to wet-chopped glass fibers, and controls the spray amount of the spray pipe through the control system, thereby ensuring that the moisture content index of the short-cut glass fibers is qualified. The wet glass fibers chopped by the short-cut equipment can be directly packaged and produced, eliminating the tedious operation of using a sifter to screen or manually sort out the long fibers because the short-cut glass fibers contain more long fibers.
[0008] Furthermore, the tension device includes a tension bracket arranged between the creel frame and the gantry frame, an annular tension frame arranged between the frames on both sides of the tension bracket, a first tension roller rotatably installed between the frames on both sides of the tension bracket, a second tension roller rotatably installed between the frames on both sides of the tension bracket, a conveyor frame arranged on the side of the tension bracket away from the creel frame, a rubber pressure roller rotatably installed on the conveyor frame near the first tension roller, a feed pressure roller rotatably installed on the side of the conveyor frame away from the rubber pressure roller, and a conveyor frame arranged between the frames on both sides of the conveyor frame and used to drive the wet glass fiber The feeding belt is driven by a belt drive, the rubber pressure roller is arranged at the end of the feeding belt, the feeding pressure roller is arranged at the front end of the feeding belt, the gantry is located between the feeding pressure roller and the rubber pressure roller, and the height of the middle section of the gantry is greater than the height of the top of the feeding belt; the short-cutting device is located on the side of the feeding pressure roller away from the rubber pressure roller, the short-cutting device maintains the tension of the wet glass fiber raw yarn obtained by the tension device through the feeding pressure roller and the rubber pressure roller, and continuously inputs the wet glass fiber raw yarn into the short-cutting device through the feeding belt for short-cutting.
[0009] By adopting the above technical scheme, the tension bracket, the annular tension frame, the first tension roller, the second tension roller, the rubber pressure roller, the feed pressure roller and the feed belt cooperate to ensure the tension of the wet glass fiber raw yarn, which is beneficial to ensure the chopped quality of the glass fiber raw yarn by the chopped equipment.
[0010] Furthermore, the annular tension frame is detachably connected to the tension bracket, and the height of the tension bracket can be adjusted in the vertical direction. The inner height of the top frame of the annular tension frame is less than the height of the second tension roller.
[0011] By adopting the above technical solution, the tension of the glass fiber raw yarn can be adjusted by adjusting the height of the annular tension frame on the tension support.
[0012] Furthermore, the distance between the outer surface of the rubber pressure roller and the outer surface of the feed pressure roller and the feed belt is determined according to the number of chopped glass fiber strands and the flat width of the chopped glass fiber strands on the feed belt, the height of the contact portion between the rubber pressure roller and the feed belt is smaller than the height of the glass fiber strands entering the feed belt after passing through the second tension roller and the first tension roller, the height of the contact portion between the rubber pressure roller and the feed belt is smaller than the height of the top of the first tension roller, and the bottom of the rubber pressure roller cooperates with the top of the feed belt and presses the wet glass fiber strands.
[0013] Furthermore, a solenoid valve is provided on the spray tube, and the solenoid valve and an online moisture detector are both communicatively connected to the control system of the special short-cut device for wet-chopped glass fibers. The online moisture detector detects the moisture content of the glass fiber precursor and saves the detection data; when it is detected that the moisture content of the glass fiber precursor does not meet the standard, the control system of the special short-cut device for wet-chopped glass fibers sends a regulating signal to the solenoid valve on the spray tube to control the moisture content of the glass fiber precursor so as to regulate the quality of the short-cut products of the glass fiber precursor.
[0014] By adopting the above technical solution, an online moisture detector monitors the moisture content of the glass fiber raw yarn on the feeding belt, and the monitoring result is transmitted to the control system of the special short-cutting device for wet-chopped glass fiber in real time in the form of an electrical signal. The control system controls the operation of the solenoid valve according to the preset value to control the spray volume of the spray tank, thereby realizing the control of the moisture content of the glass fiber raw yarn to ensure the short-cut quality of the glass fiber raw yarn.
[0015] Furthermore, the yarn guide eyes on the water tank are provided with a plurality of rows in the vertical direction, and the upper and lower adjacent yarn guide eyes are staggered.
[0016] By adopting the above technical solution, the glass fiber raw yarns are staggered after entering the water tank from the yarn guide eye, so that the spray nozzle can evenly spray water mist on the glass fiber raw yarns at different heights to ensure that the moisture content of the glass fiber raw yarns is more uniform.
[0017] Furthermore, the surfaces of the first tension roller and the second tension roller are both smooth and free of protrusions, both sides of the two tension rollers are provided with extension steps, the surfaces of the two tension rollers are both quenched or chrome-plated, and the two tension rollers run synchronously without speed difference, the surface of the annular tension frame is smooth and free of protrusions, and the width of the annular tension frame is smaller than the distance between the extension steps on both sides of the two tension rollers.
[0018] By adopting the above technical solution, the probability of affecting the quality of the chopped glass fiber raw yarn products due to the appearance of protrusions and burrs on the surface of the first tension roller, the second tension roller or the annular tension frame is reduced.
[0019] Furthermore, the short-cutting equipment includes a short-cutting machine body, on which is provided an outlet port for discharging the wet glass fiber raw yarn transmitted by the feed belt. The short-cutting equipment also includes a short-cutting tool arranged on the short-cutting machine body and used for short-cutting the wet glass fiber raw yarn transmitted by the feed belt. The short-cutting tool uses a reciprocating motion short-cutting mode, and the short-cutting tool can short-cut 3mm-56mm glass fiber short-cut products.
[0020] By adopting the above technical solution, the short-cutting tool uses a reciprocating motion short-cutting mode. The short-cutting tool can short-cut 3mm-56mm glass fiber short-cut products, and theoretically can achieve a 100% short-cutting rate, solving the two problems of long fibers and hair balls that are easily present in the traditional glass fiber raw yarn short-cutting process.
[0021] Furthermore, the outer surface of the feed belt is provided with a fluorine-containing polymer coating.
[0022] By adopting the above technical solution, it is possible to prevent wet glass fiber precursors from adhering to the surface of the feed belt, thereby ensuring the chopped glass fiber precursors.
[0023] The present application also discloses a short-cutting process of a short-cutting device dedicated for wet-cutting short-cut glass fibers, comprising the following steps:
[0024] S1, the glass fiber precursor passes through the water tank through the yarn guide eye, and the spray pipe sprays and humidifies the glass fiber precursor. The wet glass fiber precursor passes through the top of the annular tension frame, bypasses the second tension roller and the first tension roller in turn, enters between the rubber pressure roller and the feed belt, and then passes through the feed pressure roller to the discharge port;
[0025] S2. When the wet glass fiber raw yarn passes through the short-cutting tool, the short-cutting tool cuts the wet glass fiber raw yarn into short pieces. After the short-cut wet glass fiber raw yarn is transmitted out of the discharge port, it is directly packaged and shipped out.
[0026] In summary, the present invention has the following beneficial effects:
[0027] The creel equipment can ensure the orderliness of glass fiber feeding, the tension equipment can provide tension for wet glass fiber raw yarns, the moisture control equipment monitors the moisture content of wet glass fiber raw yarns, feeds the monitoring information back to the control system of the short-cut device for wet chopped glass fiber, and controls the spray volume of the spray pipe through the control system to ensure that the moisture content index of the short-cut glass fiber is qualified. The wet glass fiber chopped by the short-cut equipment can be directly packaged and produced, eliminating the tedious operation of using a sifter to screen or manually sort out the long fibers because the short-cut glass fibers contain more long fibers. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
[0029] Figure 2 yes Figure 1 The main view of
[0030] Figure 3 It is a structural schematic diagram for highlighting a creel device according to an embodiment of the present invention.
[0031] In the figure: 1. yarn rack equipment; 11. yarn rack frame; 12. water tank; 121. yarn guide eye; 2. moisture control equipment; 21. online moisture detector; 22. spray tube; 3. tension equipment; 31. tension bracket; 32. annular tension frame; 33. first tension roller; 34. second tension roller; 35. conveyor frame; 36. rubber pressure roller; 37. feed pressure roller; 38. feed belt; 4. short cutting equipment; 41. short cutting machine body; 411. discharge port; 42. short cutting tool; 5. gantry. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.
[0033] like Figure 1-3As shown, the embodiment of the present application discloses a short-cutting device for wet-cutting short-cut glass fibers, comprising a creel device 1 for ensuring the orderliness of glass fiber feeding, a moisture control device 2 for controlling the moisture content of glass fiber precursors, a tension device 3 for providing tension to wet glass fiber precursors, and a short-cutting device 4 for short-cutting the wet glass fibers passing through the tension device 3; the creel device 1 comprises a creel frame body 11 and a water tank 12 fixed to the top of the creel frame body 11, the top of the water tank 12 is open, and the side walls on both sides of the water tank 12 are Multiple rows of yarn guide eyes 121 for the glass fiber raw yarn to pass through are arranged at corresponding positions; a gantry 5 is arranged on one side of the yarn frame body 11, and the moisture control device 2 includes an online moisture detector 21 fixed on the gantry 5 and used to monitor the moisture content of the wet glass fiber raw yarn passing through the tension device 3, and a spray pipe 22 fixed on the top of the water tank 12 and connected to the external water supply system, and a plurality of spray nozzles (not shown in the figure) are evenly arranged at the bottom of the spray pipe 22; the wet glass fiber chopped by the chopped device 4 can be directly packaged and produced.
[0034] The creel device 1 can ensure the orderliness of glass fiber feeding, the tension device 3 can provide tension for wet glass fiber raw yarns, the moisture control device 2 monitors the moisture content of the wet glass fiber raw yarns, feeds back the monitoring information to the control system of the short-cut device dedicated to wet chopped glass fibers, and controls the spray amount of the spray tube 22 through the control system, so as to ensure that the moisture content index of the short-cut glass fibers is qualified, and the wet glass fibers chopped by the short-cut device 4 can be directly packaged and produced, eliminating the cumbersome operation of using a sifter to screen or manually sort out the long fibers because the short-cut glass fibers contain more long fibers.
[0035] The tension device 3 includes a tension bracket 31 arranged between the yarn frame body 11 and the gantry frame 5, an annular tension frame 32 arranged between the frames on both sides of the tension bracket 31, a first tension roller 33 rotatably installed between the frames on both sides of the tension bracket 31, a second tension roller 34 rotatably installed between the frames on both sides of the tension bracket 31, a conveying frame 35 arranged on the side of the tension bracket 31 away from the yarn frame body 11, a rubber pressure roller 36 rotatably installed on the conveying frame 35 near the first tension roller 33, a feeding pressure roller 37 rotatably installed on the side of the conveying frame 35 away from the rubber pressure roller 36, and a conveying frame 35 arranged between the frames on both sides of the conveying frame 35 and used for The feed belt 38 drives the wet glass fiber precursor forward, and the feed belt 38 is driven by a belt drive. The rubber pressure roller 36 is arranged at the end of the feed belt 38, and the feed pressure roller 37 is arranged at the front end of the feed belt 38. The gantry 5 is located between the feed pressure roller 37 and the rubber pressure roller 36. The height of the middle section of the gantry 5 is greater than the height of the top of the feed belt 38; the short-cut device 4 is located on the side of the feed pressure roller 37 away from the rubber pressure roller 36. The short-cut device 4 maintains the tension of the wet glass fiber precursor obtained by the tension device 3 through the feed pressure roller 37 and the rubber pressure roller 36, and continuously inputs the wet glass fiber precursor into the short-cut device 4 through the feed belt 38 for short-cutting.
[0036] The tension bracket 31, the annular tension frame 32, the first tension roller 33, the second tension roller 34, the rubber pressure roller 36, the feed pressure roller 37 and the feed belt 38 cooperate to ensure the tension of the wet glass fiber raw yarn, which is beneficial to ensure the chopped quality of the glass fiber raw yarn by the chopped equipment 4.
[0037] The annular tension frame 32 is detachably connected to the tension support 31, and the height can be adjusted in the vertical direction of the tension support 31. The inner height of the top frame of the annular tension frame 32 is less than the height of the second tension roller 34. The distance between the outer surface of the rubber pressure roller 36 and the outer surface of the feed pressure roller 37 and the feed belt 38 is determined according to the number of chopped glass fiber strands and the flat width of the chopped glass fiber strands on the feed belt 38. The height of the contact portion between the rubber pressure roller 36 and the feed belt 38 is less than the height of the glass fiber strands entering the feed belt 38 after passing through the second tension roller 34 and the first tension roller 33. The height of the contact portion between the rubber pressure roller 36 and the feed belt 38 is less than the height of the top of the first tension roller 33. The bottom of the rubber pressure roller 36 cooperates with the top of the feed belt 38 and presses the wet glass fiber strands. By adjusting the height of the annular tension frame 32 on the tension support 31, the height of the upper surface of the inner side of the annular tension frame 32 is always below the surfaces of the two front tension rollers, so that the glass fiber strands have sufficient tension.
[0038] A solenoid valve (not shown in the figure) is provided on the spray tube 22. The solenoid valve and the online moisture detector 21 are both communicatively connected to the control system of the special short-cut device for wet-chopped glass fibers. The online moisture detector 21 detects the moisture content of the glass fiber precursor and saves the detection data; when it is detected that the moisture content of the glass fiber precursor does not meet the standard, the control system of the special short-cut device for wet-chopped glass fibers sends a regulating signal to the solenoid valve on the spray tube 22 to control the moisture content of the glass fiber precursor so as to adjust the quality of the short-cut products of the glass fiber precursor.
[0039] The online moisture detector 21 monitors the moisture content of the glass fiber raw yarn on the feeding belt 38, and the monitoring result is transmitted to the control system of the wet-chopped glass fiber special short-cutting device in real time in the form of an electrical signal. The control system controls the operation of the solenoid valve according to the preset value to control the spray volume of the spray tank, thereby realizing the control of the moisture content of the glass fiber raw yarn to ensure the short-cut quality of the glass fiber raw yarn.
[0040] The yarn guide eyes 121 on the water tank 12 are arranged in multiple rows in the vertical direction, and the upper and lower adjacent yarn guide eyes 121 are staggered, so that the glass fiber strands enter the water tank 12 through the yarn guide eyes 121 and are staggered, so that the spray nozzle can evenly spray water mist on the glass fiber strands at different heights to ensure that the moisture content of the glass fiber strands is more uniform.
[0041] In order to reduce the quality of the chopped glass fiber products caused by protrusions and burrs on the surface of the first tension roller 33, the second tension roller 34 or the annular tension frame 32, the surface of the first tension roller 33 and the surface of the second tension roller 34 are smooth and free of protrusions, and both sides of the two tension rollers are provided with edge steps. The surfaces of the two tension rollers are quenched or chrome-plated, and the two tension rollers run synchronously without speed difference. The surface of the annular tension frame 32 is smooth and free of protrusions, and the width of the annular tension frame 32 is smaller than the distance between the edge steps on both sides of the two tension rollers.
[0042] The short-cutting device 4 includes a short-cutting machine body 41, on which a discharge port 411 for the wet glass fiber raw yarn transmitted by the feed belt 38 is provided. The short-cutting device 4 also includes a short-cutting tool 42 provided on the short-cutting machine body 41 and used to short-cut the wet glass fiber raw yarn transmitted by the feed belt 38. The short-cutting tool 42 uses a reciprocating short-cutting mode, and the short-cutting tool 42 can short-cut glass fiber short-cut products of 3mm-56mm. The short-cutting tool 42 uses a reciprocating short-cutting mode, and the short-cutting tool 42 can short-cut glass fiber short-cut products of 3mm-56mm. The short-cutting tool 42 uses a reciprocating short-cutting mode, and the short-cutting tool 42 can short-cut glass fiber short-cut products of 3mm-56mm. Theoretically, a 100% short-cutting rate can be achieved, which solves the two problems of long fibers and hair balls that are easy to exist in the traditional glass fiber raw yarn short-cutting process.
[0043] The outer surface of the feed belt 38 is provided with a fluorine-containing polymer coating (not shown in the figure), which can prevent the wet glass fiber strands from adhering to the surface of the feed belt 38, thereby ensuring the short-cutting of the glass fiber strands.
[0044] The operating principle of a special short-cutting device for wet-chopped glass fibers in the present embodiment is as follows: the creel device 1 can ensure the orderliness of glass fiber feeding, the tension device 3 can provide tension for wet glass fiber raw yarns, the moisture control device 2 monitors the moisture content of the wet glass fiber raw yarns, feeds the monitoring information back to the control system of the special short-cutting device for wet-chopped glass fibers, and controls the spray amount of the spray tube 22 through the control system, thereby ensuring that the moisture content index of the short-cut glass fibers is qualified, and the wet glass fibers chopped by the short-cutting device 4 can be directly packaged and produced, eliminating the cumbersome operation of using a sifter to screen or manually sort out the long fibers because the short-cut glass fibers contain more long fibers.
[0045] This embodiment also discloses a short-cutting process of a short-cutting device dedicated for wet-cutting short-cut glass fibers, comprising the following steps:
[0046] S1, the glass fiber precursor passes through the water tank 12 through the yarn guide eye 121, and the spray pipe 22 sprays and humidifies the glass fiber precursor. The wet glass fiber precursor passes through the top of the annular tension frame 32, and then passes through the second tension roller 34 and the first tension roller 33 in turn, and enters between the rubber pressure roller 36 and the feed belt 38, and then passes through the feed pressure roller 37 to the discharge port 411;
[0047] S2. When the wet glass fiber strands pass through the chopping cutter 42, the chopping cutter 42 chops the wet glass fiber strands. After the chopped wet glass fiber strands are transmitted out of the discharging port 411, they are directly packaged and discharged.
[0048] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A special short-cutting device for wet-cutting glass fibers, characterized by: The invention comprises a creel device (1) for ensuring the orderly feeding of glass fibers, a moisture control device (2) for controlling the moisture content of glass fiber precursors, a tension device (3) for providing tension to wet glass fiber precursors, and a chopping device (4) for chopping wet glass fibers passing through the tension device (3); The creel device (1) comprises a creel frame body (11) and a water tank (12) fixed to the top of the creel frame body (11); the top of the water tank (12) is open, and corresponding positions of the side walls on both sides of the water tank (12) are provided with a plurality of rows of yarn guide eyes (121) for glass fiber raw yarns to pass through; A gantry (5) is provided on one side of the creel frame (11), and the moisture control device (2) comprises an online moisture detector (21) fixed on the gantry (5) and used to monitor the moisture content of wet glass fiber raw yarns passing through the tension device (3), and a spray pipe (22) fixed on the top of the water tank (12) and connected to an external water supply system, and a plurality of spray nozzles are evenly arranged at the bottom of the spray pipe (22); The wet glass fibers chopped by the chopped device (4) can be directly packaged and exported.
2. A wet-chopped glass fiber special chopping device according to claim 1, characterized in that: The tension device (3) comprises a tension support (31) arranged between a creel frame (11) and a gantry frame (5), an annular tension frame (32) arranged between the frames on both sides of the tension support (31), a first tension roller (33) rotatably installed between the frames on both sides of the tension support (31), a second tension roller (34) rotatably installed between the frames on both sides of the tension support (31), a conveyor frame (35) arranged on a side of the tension support (31) away from the creel frame (11), a rubber pressure roller (36) rotatably installed on the conveyor frame (35) at a position close to the first tension roller (33), a feed pressure roller (37) rotatably installed on a side of the conveyor frame (35) away from the rubber pressure roller (36), and a conveyor frame (35) arranged between the frames on both sides of the conveyor frame (35) and used to drive the wet glass fiber to pass through the conveyor frame (35). The feeding belt (38) is used to advance the wet glass fiber raw yarn, the feeding belt (38) is driven by a belt drive, the rubber pressure roller (36) is arranged at the end of the feeding belt (38), the feeding pressure roller (37) is arranged at the front end of the feeding belt (38), the gantry (5) is located between the feeding pressure roller (37) and the rubber pressure roller (36), and the height of the middle section of the gantry (5) is greater than the height of the top of the feeding belt (38); the short-cutting device (4) is located on the side of the feeding pressure roller (37) away from the rubber pressure roller (36), and the short-cutting device (4) maintains the tension of the wet glass fiber raw yarn obtained by the tension device (3) through the feeding pressure roller (37) and the rubber pressure roller (36), and continuously inputs the wet glass fiber raw yarn into the short-cutting device (4) through the feeding belt (38) for short-cutting.
3. A wet chopped glass fiber special chopping device according to claim 2, characterized in that: The annular tension frame (32) is detachably connected to the tension bracket (31), and the height of the tension bracket (31) can be adjusted in the vertical direction. The inner height of the top frame of the annular tension frame (32) is less than the height of the second tension roller (34).
4. A wet-chopped glass fiber special chopping device according to claim 3, characterized in that: The distance between the outer surface of the rubber pressure roller (36) and the outer surface of the feed pressure roller (37) and the feed belt (38) is determined according to the number of chopped glass fiber strands and the flat width of the chopped glass fiber strands on the feed belt (38). The height of the contact portion between the rubber pressure roller (36) and the feed belt (38) is less than the height of the glass fiber strands entering the feed belt (38) after passing through the second tension roller (34) and the first tension roller (33). The height of the contact portion between the rubber pressure roller (36) and the feed belt (38) is less than the height of the top of the first tension roller (33). The bottom of the rubber pressure roller (36) cooperates with the top of the feed belt (38) and presses the wet glass fiber strands.
5. The wet chopped glass fiber special chopping device according to claim 3, characterized in that: The spray pipe (22) is provided with a solenoid valve, and the solenoid valve and the online moisture detector (21) are both connected to the control system of the wet-cut glass fiber special short-cut device for communication, and the online moisture detector (21) detects the moisture content of the glass fiber raw yarn and saves the detection data; When it is detected that the moisture content of the glass fiber raw yarn does not meet the standard, the control system of the wet-cut glass fiber special chopped device sends a regulation signal to the solenoid valve on the spray pipe (22) to control the moisture content of the glass fiber raw yarn so as to adjust the quality of the chopped glass fiber raw yarn product.
6. A special short-cutting device for wet-cutting glass fibers according to claim 5, characterized in that: The yarn guide eyes (121) on the water tank (12) are arranged in a plurality of rows in the vertical direction, and the yarn guide eyes (121) adjacent to each other at the upper and lower sides are arranged in a staggered manner.
7. The wet-chopped glass fiber special chopping device according to claim 5, characterized in that: The surface of the first tension roller (33) and the surface of the second tension roller (34) are both smooth and free of protrusions, both sides of the two tension rollers are provided with extension steps, the surfaces of the two tension rollers are both quenched or chrome-plated, and the two tension rollers run synchronously without speed difference, the surface of the annular tension frame (32) is smooth and free of protrusions, and the width of the annular tension frame (32) is smaller than the distance between the extension steps on both sides of the two tension rollers.
8. The wet-chopped glass fiber special chopping device according to claim 5, characterized in that: The short-cutting device (4) comprises a short-cutting machine body (41), and the short-cutting machine body (41) is provided with an outlet port (411) for discharging wet glass fiber raw fibers transmitted by a feeding belt (38). The short-cutting device (4) also comprises a short-cutting tool (42) arranged on the short-cutting machine body (41) and used for short-cutting the wet glass fiber raw fibers transmitted by the feeding belt (38). The short-cutting tool (42) uses a reciprocating motion short-cutting mode, and the short-cutting tool (42) can short-cut glass fiber short-cut products of 3mm-56mm.
9. A special short-cutting device for wet-cutting glass fibers according to claim 8, characterized in that: The outer surface of the feed belt (38) is provided with a fluoropolymer coating.
10. A chopping process of the dedicated chopping device for wet chopping glass fibers according to claim 9, characterized in that: The steps include: S1, the glass fiber precursor passes through the water tank (12) through the yarn guide eye (121), and the spray pipe (22) sprays and humidifies the glass fiber precursor. The wet glass fiber precursor passes through the top of the annular tension frame (32), bypasses the second tension roller (34), the first tension roller (33) in sequence, enters between the rubber pressure roller (36) and the feed belt (38), and then passes through the feed pressure roller (37) to the discharge port (411); S2. When the wet glass fiber raw yarn passes through the short-cutting tool (42), the short-cutting tool (42) cuts the wet glass fiber raw yarn into short pieces, and the wet glass fiber raw yarn after the short-cutting is transmitted out of the discharge port (411) and is directly packaged and discharged.