Glass fiber wet chopped fiber automatic control screening device

Abstract

The invention belongs to the technical field of chopped fibers, and discloses a glass fiber wet-process chopped fiber automatic control screening device which comprises a vibrating screen, a vibrating supporting assembly arranged at the bottom of the vibrating screen and a control system, the vibrating screen comprises a screen body, a horizontally-arranged screen cloth is arranged in the screen body, and a discharging groove is formed in the position, located at the discharging end of the screen cloth, in the screen body; a wedge-shaped block is slidably arranged on the feeding side of the screen body and located above the screen, a driving assembly for driving the wedge-shaped block to horizontally slide is arranged outside the screen body, an intelligent camera is arranged above the screen body, and the intelligent camera automatically captures the fiber screening area on the screen and transmits the fiber screening area to a control system in real time. The control system carries out data processing and then controls the driving assembly to drive the wedge-shaped block to slide in the screen body so as to adjust the exposed area of the screen, so that dynamic adjustment of the exposed area of the screen is achieved, a proper effective screening area is provided for fiber screening, fibers always keep reasonable distribution density on the screen, fiber distribution changes can be adapted in time, and the screening efficiency is improved. The screening effect is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of chopped fiber preparation, in particular to an automatic control screening device for wet-process chopped glass fibers. Background Art

[0002] Glass fiber wet-process chopped strands are made from sizing-drawn strands through a continuous chopped process. In recent years, thanks to its excellent dispersibility and fluidity in finished products, coupled with the continued growth in demand for new energy vehicles and high-performance composite materials, it has demonstrated unique advantages in emerging fields such as thin-walled precision injection moldings and battery casings, becoming a key technology for replacing traditional metal materials.

[0003] Chopped fibers produced using existing technology often contain long fibers that are 2-3 times longer than the specified length, as well as small clumps of fibers. These long fibers and clumps can cause blockage in injection molding machines and lead to uneven fiber dispersion in composite materials, compromising product quality.

[0004] Currently, the industry generally uses vibration screening to filter out most long fibers and hair balls. However, this process is affected by many factors, including the type, moisture content, length, yarn feed, bulk density, etc. of wet-cut short fibers. These factors often cause the fibers to exhibit different flow rates and screening areas on the screen surface, which in turn affects the screening effect. When the screening area is large or the screening speed is slow, long fibers and hair balls will increase the chance of falling into normal products due to excessive screening and eventually be mixed into the product; when the screening area is small or the screening speed is fast, the fibers have difficulty passing through the screen, and the effective screening time is shortened, resulting in ineffective screening. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides an automatic control screening device for wet-chopped glass fibers.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: an automatic controlled screening device for wet-cut short-cut glass fiber, comprising a vibrating screen, several groups of vibrating support components arranged at the bottom of the vibrating screen, and a control system, wherein the vibrating screen comprises a screen body, a horizontally arranged screen is arranged in the screen body, a discharge trough is arranged in the screen body at the discharge end of the screen, a wedge block is slidingly arranged above the screen on the feed side of the screen body, a driving component for driving the wedge block to slide horizontally is arranged outside the screen body, and an intelligent camera is also arranged above the screen body, the intelligent camera is used to automatically capture the fiber screening area on the screen and transmit it to the control system in real time, and after the control system performs data processing, it controls the driving component to drive the wedge block to slide in the screen body to adjust the exposed area of ​​the screen.

[0007] By adopting the above technical solution, a vibrating screen, a vibrating support assembly, a wedge block, a drive assembly, an intelligent camera and a control system are set up, and the intelligent camera is used to capture the fiber screening area on the screen in real time. The control system then controls the drive assembly to drive the wedge block to slide in the screen body to adjust the exposed area of ​​the screen based on the comparison result of the area with the set threshold, thereby realizing dynamic adjustment of the exposed area of ​​the screen, providing a suitable effective screening area for fiber screening, so that the fiber always maintains a reasonable distribution density on the screen and can adapt to changes in fiber distribution in a timely manner; the entire process does not require manual operation, thereby improving the degree of automation of the screening process and ensuring the stability of the screening efficiency.

[0008] Furthermore, the screen body as a whole is in the shape of a trough consisting of a bottom plate and baffles on both sides. The screen is detachably arranged between the two baffles. A vibration frame is provided at the bottom of the bottom plate, and a vibrator is provided in the vibration frame. The bottom plate is provided with two guide plates arranged in an eight-shape on the discharge side, and the guide plates and the bottom plate together constitute the discharge port.

[0009] By adopting the above technical solution, a bottom plate and a baffle are set to form a trough-shaped screen body, which provides a stable space for fiber screening; a vibration frame and a vibrator are set to provide vibration power for the screen body, promote the movement of fibers on the screen, and improve the screening effect; a guide plate is set to guide the screened fibers to converge to the discharge port, avoid fiber scattering, and improve the smoothness of discharge.

[0010] Furthermore, the discharge trough includes a trough plate located at the discharge end of the screen and lower than the screen, and a vertical side plate is provided on the side of the trough plate away from the screen. A discharge hole is opened on one of the baffles corresponding to the discharge trough position, and a discharge pipe is provided on the outside of the baffle corresponding to the discharge hole.

[0011] By adopting the above technical solution, the groove plate, side plate and discharge pipe are arranged, so that the fibers screened from the screen can flow out along the groove plate and the discharge pipe.

[0012] Furthermore, a slide groove is provided on the inner side of the baffle along the length direction of the screen body, and sliding blocks cooperating with the slide groove are provided on both sides of the wedge block. A connecting seat is provided on the side of the wedge block adjacent to the driving assembly. The driving assembly includes a support column arranged on the ground, a first elastic vibration bracket is provided on the support column, a first electric push rod is provided on the first elastic vibration bracket, and the push rod end of the first electric push rod is hingedly connected to the connecting seat.

[0013] By adopting the above technical solution, a slide groove and a slider are set to ensure the smoothness and accuracy of the sliding of the wedge block in the screen body; a support column, a first elastic vibration bracket, and a first electric push rod are set, and the first electric push rod is used to drive the wedge block to slide. The first elastic vibration bracket can effectively reduce the transmission of the screen body vibration to the first electric push rod, protect the first electric push rod, and extend its service life, while ensuring the stability and reliability of the drive assembly in driving the wedge block.

[0014] Furthermore, the control system sets a threshold value of the fiber screening area to 90%. When the smart camera recognizes that the actual screening area of ​​the fiber on the screen is greater than 90%, the control system issues an instruction to control the first electric push rod to start, pulling the wedge block to move away from the screen body, thereby increasing the exposed area of ​​the screen; when the smart camera recognizes that the actual screening area of ​​the fiber on the screen is less than 90%, the control system issues an instruction to control the first electric push rod to start, pushing the wedge block to move into the screen body, thereby reducing the exposed area of ​​the screen.

[0015] By adopting the above technical solution, the threshold of the fiber screening area is set to ensure the screening effect.

[0016] Furthermore, the vibration support assembly includes a mounting seat, a second electric push rod, and a second elastic vibration bracket. The mounting seat is fixedly set on the ground, the cylinder end of the second electric push rod is hingedly set on the mounting seat, the push rod is upward and the end is hingedly connected to the support seat, the lower end of the second elastic vibration bracket is fixedly set on the support seat, and the upper end is connected to the vibration frame.

[0017] By adopting the above technical solution, a mounting base, a second electric push rod, and a second elastic vibration bracket are provided for elastic vibration support of the vibrating screen. The second electric push rod is connected to the mounting base and the support base by an articulated manner, and can flexibly adjust the height of the support base, thereby adjusting the inclination of the screen body. The second elastic vibration bracket can both support the vibration frame and buffer vibration, reducing the impact of vibration on the support assembly and the ground, and ensuring the stability of the device under vibration. Furthermore, an infrared moisture meter is arranged above the screen body. The infrared moisture meter is used to detect the moisture content of the fibers on the screen and transmit it to the control system. The average moisture content is calculated every minute. When the deviation between the average moisture content of the two preceding and following times is greater than 10% within 5 consecutive minutes and exceeds the set threshold, the control system issues a command to control the second electric push rod to start, thereby increasing the inclination of the screen body.

[0018] By adopting the above technical solution, an infrared moisture meter is set to detect the moisture content of the fiber. Then the control system controls the second electric push rod to adjust the inclination of the screen body, so that the screen body can adapt to the changes in the moisture content of the fiber, avoiding the impact of abnormal moisture content on the screening effect, improving the adaptability of the device to fibers in different states, and ensuring the stability of the screening quality.

[0019] In summary, the present invention has the following beneficial effects: in this application, by setting a vibrating screen, a vibrating support assembly, a wedge block, a drive assembly, an intelligent camera and a control system, the intelligent camera is used to capture the fiber screening area on the screen in real time, and then the control system controls the drive assembly to drive the wedge block to slide in the screen body to adjust the exposed area of ​​the screen based on the comparison result of the area with the set threshold, thereby realizing dynamic adjustment of the exposed area of ​​the screen, providing a suitable effective screening area for fiber screening, so that the fiber always maintains a reasonable distribution density on the screen, and can adapt to changes in fiber distribution in time; the entire process does not require manual operation, which improves the degree of automation of the screening process and ensures the stability of the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0021] Figure 2 Schematic diagram of the structure of the screen body according to an embodiment of the present invention;

[0022] Figure 3 2. It is a schematic structural diagram of a wedge block and a drive assembly according to an embodiment of the present invention;

[0023] Figure 4 It is a structural schematic diagram of a vibration support assembly according to an embodiment of the present invention.

[0024] In the figure: 10, vibrating screen; 11, screen body; 111, bottom plate; 112, baffle; 12, screen; 13, discharge chute; 131, trough plate; 132, side plate; 14, vibration frame; 15, vibrator; 16, guide plate; 17, discharge pipe; 18, chute; 20, vibration support assembly; 21, mounting seat; 22, second electric push rod; 23, second elastic vibration bracket; 24, support seat; 30, wedge block; 31, slider; 32, connecting seat; 40, drive assembly; 41, support column; 42, first elastic vibration bracket; 43, first electric push rod. DETAILED DESCRIPTION

[0025] 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; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0026] like Figure 1-4As shown, the embodiment of the present application discloses an automatic control screening device for wet-chopped glass fiber, including a vibrating screen 10, a vibrating support assembly 20, a wedge block 30, a drive assembly 40, an intelligent camera, an infrared moisture meter and a control system.

[0027] The vibrating screen 10 includes a screen body 11, a screen 12, a discharge trough 13, a vibration frame 14 and a vibrator 15. The screen body 11 is in the shape of a trough consisting of a bottom plate 111 and baffles 112 on both sides. A vibration frame 14 is provided at the bottom of the bottom plate 111, and a vibrator 15 is provided in the vibration frame 14. The vibration of the vibrator 15 drives the screen body 11 to vibrate, so that the fibers are screened on the screen 12. The screen 12 is horizontally arranged in the screen body 11, and is specifically arranged between the two baffles 112 in a detachable connection manner, so that screens 12 of different specifications can be replaced conveniently according to different screening requirements. The screen 12 is provided with a number of elliptical meshes distributed at intervals, which are used to screen out fibers that meet the specifications.

[0028] The bottom plate 111 is provided with two guide plates 16 arranged in an eight-shaped pattern on the discharge side, and the guide plates 16 and the bottom plate 111 together constitute the discharge port. The fibers screened from the mesh holes on the screen 12 will flow along the bottom plate 111 to the discharge port, facilitating discharge. A discharge trough 13 is provided at the discharge end of the screen 12 in the sieve body 11. The discharge trough 13 includes a trough plate 131 located at the discharge end of the screen 12 and lower than the screen 12. A vertical side plate 132 is provided on the side of the trough plate 131 away from the screen 12. A discharge hole is opened on one of the baffles 112 at a position corresponding to the discharge trough 13, and a discharge pipe 17 is provided on the outer side of the baffle 112 corresponding to the discharge hole. The slot plate 131 of the discharge trough 13 is lower than the screen 12 to facilitate the long fibers and hair balls that are not screened out by the mesh of the screen 12 to enter the discharge trough 13; and then be discharged along the slot plate 131, the discharge hole, and the discharge pipe 17.

[0029] The wedge block 30 is slidably arranged above the screen 12 and located on the feed side of the screen body 11. The overall structure is a block structure with a right triangle cross section, wherein the surface where the longer right-angled side is located is the bottom surface parallel to the screen 12 and close to the upper surface of the screen 12, and the surface where the hypotenuse is located is arranged at an angle to the screen 12. When arranged, a chute 18 arranged along the length direction of the screen body 11 is provided on the inner side of the baffle 112, and sliders 31 that cooperate with the chute 18 are correspondingly provided on both sides of the wedge block 30, so that the wedge block 30 can slide stably in the screen body 11 under the cooperation of the sliders 31 and the chute 18. The drive assembly 40 is arranged outside the screen body 11 for driving the wedge block 30 to slide horizontally, including a support column 41 arranged on the ground, a first elastic vibration bracket 42 is provided on the support column 41, and a first electric push rod 43 is provided on the first elastic vibration bracket 42. A connecting seat 32 is provided on the side of the wedge block 30 adjacent to the drive assembly 40. The end of the first electric push rod 43 is hingedly connected to the connecting seat 32. This provides a certain degree of cushioning when the vibration of the screen body 11 drives the wedge block 30, reducing the impact of vibration on the drive. The first elastic vibration bracket 42 can also reduce the impact of the vibration of the screen body 11 on the first electric push rod 43, ensuring the stability of the drive.

[0030] The vibration support assembly 20 is provided with four groups, which are respectively arranged at the bottom of the vibrating screen 10 and are used to support the entire vibrating screen 10. The vibration support assembly 20 includes a mounting seat 21, a second electric push rod 22, and a second elastic vibration bracket 23. The mounting seat 21 is fixedly set on the ground, the cylinder end of the second electric push rod 22 is hingedly set on the mounting seat 21, the push rod is upward and the end is hingedly connected to the support seat 24, the lower end of the second elastic vibration bracket 23 is fixedly set on the support seat 24, and the upper end is connected to the vibration frame 14. The second electric push rod 22 is connected to the mounting seat 21 and the support seat 24 in an articulated manner, and can flexibly adjust the height of the support seat 24, thereby realizing the adjustment of the inclination of the screen body 11; the second elastic vibration bracket 23 can both support the vibration frame 14 and buffer vibration, reduce the impact of vibration on the support assembly and the ground, and ensure the stability of the device in a vibrating state.

[0031] An intelligent camera (not shown in the figure) and an infrared moisture meter (not shown in the figure) are arranged above the screen body 11. The intelligent camera is used to automatically capture the fiber screening area on the screen 12 and transmit it to the control system in real time. The infrared moisture meter is used to detect the moisture content of the fibers on the screen 12 and transmit it to the control system. The control system processes the information fed back by the intelligent camera and the infrared moisture meter, and controls the first electric push rod 43 and the second electric push rod 22 to perform corresponding actions, driving the wedge block 30 to slide in the screen body 11 to adjust the exposed area of ​​the screen 12, or controlling the second electric push rod 22 to move to adjust the inclination of the screen body 11.

[0032] Specifically, the control system sets the threshold value of the fiber screening area to 90%. When the smart camera recognizes that the actual screening area of ​​the fiber on the screen 12 is greater than 90%, the control system issues an instruction to control the first electric push rod 43 to start, pulling the wedge block 30 to move away from the screen body 11, thereby increasing the exposed area of ​​the screen 12; when the smart camera recognizes that the actual screening area of ​​the fiber on the screen 12 is less than 90%, the control system issues an instruction to control the first electric push rod 43 to start, pushing the wedge block 30 to move into the screen body 11, thereby reducing the exposed area of ​​the screen 12, thereby ensuring the reasonable distribution of the fiber on the screen 12.

[0033] The average moisture content is calculated every minute. When the deviation between the average moisture content of two consecutive times is greater than 10% and exceeds the set threshold within 5 consecutive minutes, the control system sends a command to control the second electric push rod 22 to start, increase the inclination of the screen body 11, to adapt to the change of fiber moisture content and ensure the screening effect.

[0034] The operating principle of an automatic controlled screening device for wet-chopped glass fibers in this embodiment is as follows: the wet-chopped glass fibers are transported to the inclined surface of the wedge block 30 through a feed hopper, and then slide down the inclined surface onto the screen 12 under the vibration action of the vibrator 15 and are screened along the screen 12. Fibers that meet the specifications fall from the mesh holes of the screen 12 to the bottom plate 111 and are finally discharged from the discharge port; long fibers and hair balls that cannot be screened by the screen 12 enter the discharge trough 13 from the end of the screen 12, and are then discharged from the discharge hole and the discharge pipe 17.

[0035] The smart camera captures the fiber screening area in real time and transmits it to the control system. When the smart camera recognizes that the actual screening area of ​​the fiber on the screen 12 is greater than 90%, the control system issues an instruction to control the first electric push rod 43 to start, pulling the wedge block 30 to move away from the screen body 11, thereby increasing the exposed area of ​​the screen 12; when the smart camera recognizes that the actual screening area of ​​the fiber on the screen 12 is less than 90%, the control system issues an instruction to control the first electric push rod 43 to start, pushing the wedge block 30 to move into the screen body 11, thereby reducing the exposed area of ​​the screen 12, thereby ensuring the reasonable distribution of the fiber on the screen 12.

[0036] The infrared moisture meter detects the fiber moisture content in real time and transmits it to the control system. The average moisture content is calculated every one minute. When the deviation between the average moisture content of two consecutive times is greater than 10% within 5 consecutive minutes and exceeds the set threshold, the control system issues a command to control the second electric push rod 22 to start, increase the inclination of the screen body 11, to adapt to the change of fiber moisture content and ensure the screening effect.

[0037] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An automatic control screening device for wet-cut glass fiber, characterized by: The invention comprises a vibrating screen (10), a plurality of groups of vibration support assemblies (20) arranged at the bottom of the vibrating screen (10), and a control system. The vibrating screen (10) comprises a screen body (11), a horizontally arranged screen (12) is arranged in the screen body (11), a discharge trough (13) is arranged in the screen body (11) at the discharge end of the screen (12), a wedge block (30) is slidably arranged above the screen (12) on the feed side of the screen body (11), a driving assembly (40) for driving the wedge block (30) to slide horizontally is arranged outside the screen body (11), and an intelligent camera is arranged above the screen body (11), the intelligent camera is used to automatically capture the fiber screening area on the screen (12) and transmit it to the control system in real time. After the control system processes the data, it controls the driving assembly (40) to drive the wedge block (30) to slide in the screen body (11) to adjust the exposed area of ​​the screen (12).

2. The automatic control screening device for wet-chopped glass fiber according to claim 1, characterized in that: The sieve body (11) is in the shape of a trough as a whole and is composed of a bottom plate (111) and baffles (112) on both sides. The sieve (12) is detachably arranged between the two baffles (112). A vibration frame (14) is provided at the bottom of the bottom plate (111). A vibrator (15) is provided in the vibration frame (14). Two guide plates (16) arranged in an eight-shaped pattern are provided on the discharge side of the bottom plate (111). The guide plates (16) and the bottom plate (111) together form a discharge port.

3. The automatic control screening device for wet-chopped glass fiber according to claim 2, characterized in that: The discharge trough (13) comprises a trough plate (131) located at the discharge end of the screen (12) and lower than the screen (12); a vertical side plate (132) is provided on the side of the trough plate (131) away from the screen (12); a discharge hole is provided on one baffle plate (112) corresponding to the position of the discharge trough (13); and a discharge pipe (17) is provided on the outer side of the baffle plate (112) corresponding to the discharge hole.

4. The automatic control screening device for wet-chopped glass fiber according to claim 2, characterized in that: A chute (18) arranged along the length direction of the screen body (11) is provided on the inner side of the baffle (112), and sliding blocks (31) cooperating with the chute (18) are provided on both sides of the wedge block (30), and a connecting seat (32) is provided on the side of the wedge block (30) adjacent to the driving assembly (40). The driving assembly (40) includes a support column (41) arranged on the ground, a first elastic vibration bracket (42) is provided on the support column (41), and a first electric push rod (43) is provided on the first elastic vibration bracket (42), and the push rod end of the first electric push rod (43) is hingedly connected to the connecting seat (32).

5. The automatic control screening device for wet-chopped glass fiber according to claim 4, characterized in that: The control system sets a threshold value of the fiber screening area to 90%. When the smart camera recognizes that the actual screening area of ​​the fiber on the screen (12) is greater than 90%, the control system issues an instruction to control the first electric push rod (43) to start, pull the wedge block (30) to move away from the screen body (11), and increase the exposed area of ​​the screen (12); when the smart camera recognizes that the actual screening area of ​​the fiber on the screen (12) is less than 90%, the control system issues an instruction to control the first electric push rod (43) to start, push the wedge block (30) to move into the screen body (11), and reduce the exposed area of ​​the screen (12).

6. The automatic control screening device for wet-chopped glass fiber according to claim 1, characterized in that: The vibration support assembly (20) comprises a mounting seat (21), a second electric push rod (22), and a second elastic vibration bracket (23); the mounting seat (21) is fixedly arranged on the ground; the cylinder end of the second electric push rod (22) is hingedly arranged on the mounting seat (21); the push rod is upward and the end is hingedly connected to the support seat (24); the lower end of the second elastic vibration bracket (23) is fixedly arranged on the support seat (24) and the upper end is connected to the vibration bracket (14).

7. The automatic control screening device for wet-chopped glass fiber according to claim 6, characterized in that: An infrared moisture meter is also arranged above the sieve body (11). The infrared moisture meter is used to detect the moisture content of the fibers on the sieve (12) and transmit it to the control system. The average moisture content is calculated every one minute. When the deviation between the average moisture content of two consecutive times is greater than 10% within 5 consecutive minutes and exceeds a set threshold, the control system issues a command to control the second electric push rod (22) to start, thereby increasing the inclination of the sieve body (11).

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