Flattening device for producing glass fiber untwisted coarse gauze

Abstract

The utility model discloses a flattening device for producing glass fiber untwisted coarse gauze, and belongs to the technical field of cloth production. Comprising a working plate; the flattening roller A is rotationally arranged on the inner side of the working plate; the flattening roller B is arranged on the inner side of the working plate in a sliding mode, and the flattening roller B is located between the two flattening rollers A and located above the axes of the two flattening rollers A; the fixing assembly is arranged at the top of the working plate, and the fixing assembly is used for fixing the flattening roller B; the guide rollers are slidably arranged on the inner side of the working plate, and the two guide rollers are rotatably arranged at the tops of the two flattening rollers A. The problems that a pull rod and a fixing groove need to be installed through screws according to the angle needing to be adjusted, the distance between the two ends of the pull rod is generally long, and workers manually install the screws in sequence, so that the labor intensity of workers is lowered are effectively solved. The problem that the pull rod is difficult to position is solved, and the effect that the flattening roller B is convenient to install is achieved.

Description

Technical Field

[0001] This application relates to the field of fabric production technology, and more specifically, to a flattening device for producing glass fiber untwisted roving. Background Technology

[0002] Glass fiber untwisted roving is a fabric woven from untwisted roving. The flattening device is a key piece of equipment in the production of glass fiber untwisted roving. Through mechanical flattening, the fabric surface is ensured to be flat, wrinkles and creases on the fabric surface are eliminated, and quality requirements are met. In addition, the flattening process can improve the density and stability of the fabric surface, and make the warp and weft yarns more neatly arranged.

[0003] In related technologies, to facilitate the adjustment of the pressing gap of glass fiber untwisted roving, for example, patent CN213061409U provides a flattening device for the production of glass fiber untwisted roving. This device uses screws passing through the left and right ends of a pull rod and being connected and locked to a fixing groove at an adjustable angle. The angle of the pull rod controls the distance between the first and second flattening rollers, thereby enabling the flattening of roving of different thicknesses.

[0004] Although the existing technical solution mentioned above can adjust the pressing gap of glass fiber untwisted roving by adjusting the angle of the pull rod and then fixing the pull rod with screws, when it is necessary to adjust the distance between the first and second pressing rollers, the pull rod must be installed with screws to the fixing groove according to the required angle. Generally, the distance between the two ends of the pull rod is relatively long, and it is difficult for the staff to position the pull rod by manually installing the screws one by one.

[0005] In view of this, we propose a flattening device for the production of glass fiber untwisted roving. Utility Model Content

[0006] The purpose of this application is to provide a flattening device for the production of glass fiber untwisted roving, which can effectively solve the problem in the prior art that the pull rod and the fixing groove are installed by screws to adjust the angle as needed. Generally, the distance between the two ends of the pull rod is long, and it is difficult for the operator to manually install the screws one by one to position the pull rod.

[0007] This application provides a flattening device for producing glass fiber untwisted roving, comprising:

[0008] Work board;

[0009] Flattening roller A is rotatably mounted on the inner side of the working plate;

[0010] Flattening roller B is slidably disposed on the inner side of the working plate. Flattening roller B is located between two flattening rollers A and above the axis of the two flattening rollers A.

[0011] A fixing component is disposed on the top of the work plate, the fixing component being used to fix the flattening roller B;

[0012] Guide rollers are slidably disposed on the inner side of the working plate, and two guide rollers are rotatably disposed on the top of two flattening rollers A;

[0013] The flattening roller B has rotating arms on both sides, and a fixing sleeve is fixedly installed on the inner side of the rotating arm. The fixing assembly includes two fixing columns that cooperate with the fixing sleeve. The fixing columns are driven by external force to move inward to the fixing sleeve for fixing.

[0014] As an optional solution to the technical solution of this application, sprockets are fixedly provided on the outer sides of both flattening rollers A, and chains are meshed on the outer sides of the two sprockets. One side of one of the flattening rollers A is fixedly provided with the output end of the drive motor, and the drive motor is fixedly provided on the outer side of the work plate.

[0015] As an optional solution to the technical solution of this application, the inner side of the working plate is provided with two slide rails A corresponding to the flattening roller B, and sliders A are fixedly provided on both sides of the flattening roller B. The sliders A are slidably disposed with the inner side of the slide rails A, and a distance sensor is provided at the bottom of the sliders A.

[0016] As an optional solution to the technical solution of this application, a connecting plate A is fixedly provided on the top of the slider A, a connecting rod is rotatably provided on the top of the connecting plate A, two connecting rods are rotatably provided with corresponding rotating arms, and a pull rod A is fixedly provided on the inner side of the two rotating arms.

[0017] As an optional solution of the technical solution in this application, two fixing plates are fixedly provided on the outer side of the working plate, and positioning blocks are fixedly provided on the inner side of each of the two fixing plates. Positioning holes are provided on the outer side of each of the two rotating arms. The two rotating arms are rotatably disposed on the outer side of the positioning blocks through the positioning holes. A conical surface A is provided on the inner side of each of the two fixing sleeves, and a conical surface B is provided on the outer side of each of the two fixing columns.

[0018] As an optional solution to the technical solution of this application, an L-shaped plate is fixedly installed on the inner side of the working plate corresponding to the fixing plate. A sliding rod is fixedly installed on the fixing plate and the corresponding L-shaped plate. The fixing column is fixedly installed on the outer side of the conical surface B. The conical surface B is slidably installed on the outer side of the sliding rod. A screw is threaded on the inner side of the conical surface B. The screw is rotatably installed on the inner side of the fixing plate. A connecting rod A is fixedly installed on the end of the two screws that are close to each other. A handwheel is fixedly installed on the outer side of the connecting rod A.

[0019] As an optional solution to the technical solution of this application, the two sides of the guide roller are respectively rotatably disposed on the inner side of the corresponding slider B, the outer side of the working plate is fixedly disposed with a slide rail B corresponding to the slider B, the top of the slider B is fixedly disposed with a connecting plate B, the outer side of the connecting plate B is provided with an opening, the openings on both sides are slidably disposed with the corresponding lifting plate through sliding pins, and the outer side of the two lifting plates is fixedly disposed with pulleys, and the two pulleys are driven by the lifting component to perform lifting and lowering actions.

[0020] As an optional solution to the technical solution of this application, the lifting component includes two arc-shaped blocks, both of which are rotatably disposed on the outer side of the working plate. A connecting rod B is fixedly disposed on the outer side of the arc-shaped blocks, and a pull rod B is fixedly disposed on the inner side of the two connecting rods B.

[0021] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0022] (1) This application uses a fixing component. Two fixing columns are driven by external force to move towards the inside of the fixing sleeve, so that the two fixing columns fix the fixing sleeve, thereby fixing the two rotating arms and fixing the position of the flattening roller B. Therefore, it effectively solves the problem that the pull rod and the fixing groove need to be installed by screws to adjust the angle as needed. Generally, the distance between the two ends of the pull rod is long, and it is difficult for the staff to manually install the screws one by one to position the pull rod. This achieves the effect of facilitating the installation of the flattening roller B.

[0023] (2) This application provides a rotating arm on the top of the flattening roller B, which can drive the flattening roller B to slide inside the working plate under external force, thereby adjusting the distance between the flattening roller B and the flattening roller A, thus making it suitable for glass fiber untwisted rovings of different thicknesses. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a flattening device for producing glass fiber untwisted roving disclosed in a preferred embodiment of this application.

[0025] Figure 2 This is a schematic diagram of the structure of the flattening roller A in the flattening device for producing glass fiber untwisted roving disclosed in a preferred embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the structure of the flattening roller B in the flattening device for producing glass fiber untwisted roving disclosed in a preferred embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the structure of the fixing component in the flattening device for producing glass fiber untwisted roving disclosed in a preferred embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the assembly of the guide roller and lifting component in a flattening device for producing glass fiber untwisted roving, as disclosed in a preferred embodiment of this application.

[0029] Figure 6 This is a schematic diagram of the working plate in the flattening device for producing glass fiber untwisted roving disclosed in a preferred embodiment of this application;

[0030] Figure 7 This is a schematic diagram illustrating the derivation of the gap width between the flattening roller A and the flattening roller B in a flattening device for producing glass fiber untwisted roving, as disclosed in a preferred embodiment of this application.

[0031] Explanation of the labels in the diagram:

[0032] 1. Working plate; 11. Fixing plate; 111. Positioning block; 12. L-shaped plate; 13. Slide rod; 14. Slide rail A; 15. Slide rail B;

[0033] 2. Flattening roller A; 21. Sprocket; 22. Chain; 23. Drive motor;

[0034] 3. Flattening roller B; 31. Rotating arm; 311. Fixed sleeve; 3111. Conical surface A; 312. Positioning hole; 32. Slider A; 33. Distance sensor; 34. Connecting plate A; 35. Connecting rod; 36. Pull rod A;

[0035] 4. Fixing component; 41. Fixing post; 411. Conical surface B; 42. Threaded connecting plate; 43. Screw; 44. Connecting rod A; 45. Handwheel;

[0036] 5. Guide roller; 51. Slider B; 52. Connecting plate B; 521. Through port; 53. Lifting plate; 531. Sliding pin; 54. Pulley;

[0037] 6. Lifting assembly; 61. Arc block; 62. Connecting rod B; 63. Pull rod B. Detailed Implementation

[0038] The present application will be further described in detail below with reference to the accompanying drawings.

[0039] Reference Figure 1 , Figure 3 and Figure 4This application discloses a flattening device for producing glass fiber untwisted roving, including a working plate 1. A flattening roller A2 is rotatably arranged on the inner side of the working plate 1, and a flattening roller B3 is slidably arranged on the inner side of the working plate 1. The flattening roller B3 is located between the two flattening rollers A2 and above the axis of the two flattening rollers A2. A fixing component 4 is arranged on the top of the working plate 1 to fix the flattening roller B3. A guide roller 5 is slidably arranged on the inner side of the working plate 1. The two guide rollers 5 are rotatably arranged on the top of the two flattening rollers A2. Rotating arms 31 are rotatably arranged on both sides of the flattening roller B3. A fixing sleeve 311 is fixedly arranged on the inner side of the rotating arm 31. The fixing component 4 includes two fixing columns 41 that cooperate with the fixing sleeve 311. The fixing columns 41 are driven by external force to move inward to the fixing sleeve 311 for fixing.

[0040] When flattening the glass fiber roving, the flattening roller B3 and the two guide rollers 5 slide upwards, allowing the glass fiber roving to pass between the two working plates 1 and the flattening roller B3 and the two guide rollers 5. Then, the two guide rollers 5 are lowered, and after adjusting the position of the flattening roller B3 and the two guide rollers 5, the two fixed columns 41 are driven by external force to move inwards towards the fixed sleeve 311, so that the two fixed columns 41 fix the fixed sleeve 311, thereby fixing the two rotating arms 31 and fixing the position of the flattening roller B3, thus achieving the effect of fixing the flattening roller B3. By rotating the flattening roller A2, the glass fiber roving is moved, so that the flattening roller A2 and the flattening roller B3 flatten the glass fiber roving.

[0041] Reference Figure 1 and Figure 2 Both flattening rollers A2 are fixedly equipped with sprockets 21 on their outer sides, and chains 22 are meshed together on the outer sides of the two sprockets 21. One side of one flattening roller A2 is fixedly connected to the output end of the drive motor 23, which is fixedly located on the outer side of the work plate 1.

[0042] The drive motor 23 drives one flattening roller A2 to rotate, which in turn drives the corresponding sprocket 21 to rotate, thereby driving the chain 22 and another sprocket 21 to rotate, which in turn drives the other flattening roller A2 to rotate. The two flattening rollers A2 rotate to flatten the glass fiber untwisted roving.

[0043] Reference Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7Two slide rails A14 are provided on the inner side of the working plate 1 corresponding to the flattening roller B3. Slider A32 is fixedly installed on both sides of the flattening roller B3. The slider A32 slides along the inner side of the slide rails A14. A distance sensor 33 is installed at the bottom of the slider A32. A connecting plate A34 is fixedly installed at the top of the slider A32. A connecting rod 35 is rotatably installed on the top of the connecting plate A34. The two connecting rods 35 rotate with the corresponding rotating arms 31. A pull rod A36 is fixedly installed on the inner side of both rotating arms 31. Two fixing plates 11 are fixedly installed on the outer side of the working plate 1. A positioning block 111 is fixedly installed on the inner side of each of the two fixing plates 11. A positioning hole 312 is opened on the outer side of each of the two rotating arms 31. The two rotating arms 31 are connected by a positioning hole 312. The positioning hole 312 is rotatably disposed on the outside of the positioning block 111. The inner sides of the two fixing sleeves 311 are provided with a conical surface A3111, and the outer sides of the two fixing posts 41 are provided with a conical surface B411. The inner side of the working plate 1 is fixedly disposed with an L-shaped plate 12 corresponding to the fixing plate 11. The fixing plate 11 and the corresponding L-shaped plate 12 are jointly fixedly disposed with a slide rod 13. The fixing post 41 is fixedly disposed on the outside of the conical surface B411. The conical surface B411 is slidably disposed on the outside of the slide rod 13. The inner side of the conical surface B411 is threaded with a screw 43. The screw 43 is rotatably disposed on the inner side of the fixing plate 11. The two screws 43 are fixedly disposed with a connecting rod A44 at their close ends. The outer side of the connecting rod A44 is fixedly disposed with a handwheel 45.

[0044] When the glass fiber untwisted roving is placed between the flattening rollers A2 and B3, the handwheel 45 is turned to drive the two screws 43 to rotate, thereby moving the two threaded connecting plates 42 and moving the two fixing posts 41 away from the fixing sleeve 311. This releases the fixing component 4 from the fixing effect on the flattening roller B3. Then, the pull rod A36 is pressed down to drive the rotating arm 31 to rotate, thereby moving the connecting rod 35 and the connecting plate A34 upward. The connecting plate A34 drives the slider A32, thereby moving the flattening roller B3 upward, so that the glass fiber untwisted roving can pass between the flattening rollers A2 and B3.

[0045] After passing through the glass fiber untwisted roving, the height of the flattening roller B3 is adjusted by raising and lowering the pull rod A36. Figure 7In the diagram, l represents the distance from the center of the flattening roller A2 to the bottom inner side of the working plate 1, a represents the straight-line distance from the center of the flattening roller B3 to the detection end of the distance sensor 33, h represents the vertical distance from the center of the flattening roller B3 to the horizontal axis of the two flattening rollers A2, and x represents the distance detected by the distance sensor 33. When adjusting the height of the flattening roller B3, h = a + xl, which gives h. The vertical distance from the center of the flattening roller B3 to the vertical axis of the flattening roller A2 remains unchanged. Using the Pythagorean theorem, the distance between the center of the flattening roller B3 and the center of the flattening roller A2 after adjustment can be obtained. Subtracting the radius of the flattening roller B3 and the radius of the flattening roller A2 from this distance gives the gap width between the flattening roller B3 and the flattening roller A2. The gap width matches the thickness of the glass fiber untwisted roving, ensuring that the equipment can adjust the height of the flattening roller B3 according to the thickness of different glass fiber untwisted rovings.

[0046] After adjusting the height of the flattening roller B3, turn the handwheel 45 to drive the connecting rod A44 to rotate. The connecting rod A44 drives the two screws 43 to rotate, causing the two screws 43 to move the threaded connecting plate 42 and the fixing column 41 towards the corresponding fixing sleeve 311. This allows the two conical surfaces B411 to engage with the corresponding conical surface A3111, fixing the rotating arm 31 and thus fixing the flattening roller B3, achieving the effect of fixing the flattening roller B3.

[0047] Reference Figure 1 and Figure 5 The guide rollers 5 are rotatably mounted on the inner sides of the corresponding sliders B51. The outer side of the working plate 1 is fixedly mounted with a slide rail B15 corresponding to the sliders B51. The top of the sliders B51 is fixedly mounted with a connecting plate B52. The outer side of the connecting plate B52 has an opening 521. The openings 521 on both sides are slidably mounted with the corresponding lifting plates 53 through sliding pins 531. The outer sides of the two lifting plates 53 are fixedly mounted with pulleys 54. The two pulleys 54 are driven by the lifting assembly 6 to perform lifting and lowering actions. The lifting assembly 6 includes two arc-shaped blocks 61. The two arc-shaped blocks 61 are rotatably mounted on the outer side of the working plate 1. The outer side of the arc-shaped blocks 61 is fixedly mounted with a connecting rod B62. The inner sides of the two connecting rods B62 are jointly fixedly mounted with a pull rod B63.

[0048] When the glass fiber roving is placed between the flattening roller A2 and the guide roller 5, pressing the pull rod B63 causes the connecting rod B62 to rotate downwards, thereby causing the arc block 61 to rotate. The arc block 61 then causes the pulley 54 to rise, which in turn causes the lifting plate 53 and the connecting plate B52 to rise, which in turn causes the slider B51 to rise, and the guide roller 5 to rise, allowing the glass fiber roving to pass between the guide roller 5 and the flattening roller B3. Then, the pull rod B63 is rotated in the opposite direction to reset the arc block 61, which in turn causes the pulley 54 to reset the lifting plate 53. Since the glass fiber roving is flattened by the flattening rollers A2 and B3, the thickness of the glass fiber roving is different when passing through the two guide rollers 5. With the cooperation of the through-hole 521 and the sliding pin 531, the two guide rollers 5 can fall under their own weight and press down on top of the glass fiber roving.

[0049] In summary, when using the glass fiber untwisted roving production flattening device disclosed in this application embodiment, rotating the handwheel 45 causes the two screws 43 to rotate, thereby moving the two threaded connecting plates 42 and moving the two fixed columns 41 away from the fixed sleeve 311, thus releasing the fixing component 4 from the flattening roller B3. Then, pressing down the pull rod A36 causes the pull rod A36 to rotate the rotating arm 31, thereby moving the connecting rod 35 and the connecting plate A34 upward. The connecting plate A34 then moves the slider A32, thereby moving the flattening roller B3 upward. Pressing down the pull rod B63 causes the pull rod B63 to rotate the connecting rod B62 downward, thereby rotating the arc block 61. The arc block 61 then moves the pulley 54 upward, causing the pulley 54 to move the lifting plate 53 and the connecting plate B52 upward, thereby moving the slider B51 upward and the guide roller 5 upward, so that the glass fiber untwisted roving can pass between the two working plates 1 and the flattening roller B3 and the two guide rollers 5.

[0050] Then, the pull rod B63 is rotated in the opposite direction to reset the arc-shaped block 61, thereby causing the pulley 54 to drive the lifting plate 53 to reset. Since the glass fiber untwisted roving is flattened by the flattening rollers A2 and B3, the thickness of the glass fiber untwisted roving is different when passing through the two guide rollers 5. With the cooperation of the through-hole 521 and the sliding pin 531, the two guide rollers 5 can fall under their own gravity and press above the glass fiber untwisted roving. The height of the flattening roller B3 is adjusted by the pull rod A36 driving the flattening roller B3 to rise and fall. Figure 7In the diagram, l represents the distance from the center of the flattening roller A2 to the bottom inner side of the working plate 1, a represents the straight-line distance from the center of the flattening roller B3 to the detection end of the distance sensor 33, h represents the vertical distance from the center of the flattening roller B3 to the horizontal axis of the two flattening rollers A2, and x represents the distance detected by the distance sensor 33. When adjusting the height of the flattening roller B3, h = a + xl, which gives h. The vertical distance from the center of the flattening roller B3 to the vertical axis of the flattening roller A2 remains unchanged. Using the Pythagorean theorem, the distance between the center of the flattening roller B3 and the center of the flattening roller A2 after adjustment can be obtained. Subtracting the radius of the flattening roller B3 and the radius of the flattening roller A2 from this distance gives the gap width between the flattening roller B3 and the flattening roller A2. The gap width matches the thickness of the glass fiber untwisted roving, ensuring that the equipment can adjust the height of the flattening roller B3 according to the thickness of different glass fiber untwisted rovings.

[0051] After adjusting the height of the flattening roller B3, turn the handwheel 45 to drive the connecting rod A44 to rotate. The connecting rod A44 drives the two screws 43 to rotate, which in turn drives the threaded connecting plate 42 and the fixing column 41 to move towards the corresponding fixing sleeve 311. This allows the two conical surfaces B411 to engage with the corresponding conical surface A3111, fixing the rotating arm 31 and thus fixing the flattening roller B3, achieving the effect of fixing the flattening roller B3.

[0052] The drive motor 23 drives one flattening roller A2 to rotate, which in turn drives the corresponding sprocket 21 to rotate, thereby driving the chain 22 and another sprocket 21 to rotate, which in turn drives the other flattening roller A2 to rotate. The two flattening rollers A2 rotate to drive the glass fiber untwisted roving, and the flattening rollers A2 and B3 flatten the glass fiber untwisted roving.

Claims

1. A flattening device for producing glass fiber untwisted roving, characterized in that, Include: Workboard (1); The flattening roller A (2) is rotatably mounted on the inner side of the working plate (1); The flattening roller B (3) is slidably disposed on the inner side of the working plate (1). The flattening roller B (3) is located between the two flattening rollers A (2) and above the axis of the two flattening rollers A (2). A fixing component (4) is provided on the top of the working plate (1), and the fixing component (4) is used to fix the flattening roller B (3); Guide rollers (5) are slidably disposed on the inner side of the working plate (1), and the two guide rollers (5) are rotatably disposed on the top of the two flattening rollers A (2); The flattening roller B (3) is provided with rotating arms (31) on both sides. A fixing sleeve (311) is fixedly provided on the inner side of the rotating arm (31). The fixing component (4) includes two fixing columns (41) that cooperate with the fixing sleeve (311). The fixing column (41) is driven by external force to move into the fixing sleeve (311) for fixing.

2. The flattening device for producing glass fiber untwisted roving according to claim 1, characterized in that: Both of the flattening rollers A (2) are fixedly provided with sprockets (21) on their outer sides, and the two sprockets (21) are meshed with a chain (22) on their outer sides. One side of one of the flattening rollers A (2) is fixedly provided with the output end of the drive motor (23), and the drive motor (23) is fixedly provided on the outer side of the working plate (1).

3. The flattening device for producing glass fiber untwisted roving according to claim 1, characterized in that: The inner side of the working plate (1) is provided with two slide rails A (14) corresponding to the flattening roller B (3). Slider A (32) is fixedly provided on both sides of the flattening roller B (3). The slider A (32) slides on the inner side of the slide rail A (14). A distance sensor (33) is provided at the bottom of the slider A (32).

4. The flattening device for producing glass fiber untwisted roving according to claim 3, characterized in that: A connecting plate A (34) is fixedly provided on the top of the slider A (32), and a connecting rod (35) is rotatably provided on the top of the connecting plate A (34). The two connecting rods (35) are rotatably provided with the corresponding rotating arms (31), and a pull rod A (36) is fixedly provided on the inner side of the two rotating arms (31).

5. The flattening device for producing glass fiber untwisted roving according to claim 1, characterized in that: Two fixing plates (11) are fixedly installed on the outer side of the working plate (1). A positioning block (111) is fixedly installed on the inner side of each of the two fixing plates (11). A positioning hole (312) is opened on the outer side of each of the two rotating arms (31). The two rotating arms (31) are rotatably installed on the outer side of the positioning block (111) through the positioning hole (312). A conical surface A (3111) is provided on the inner side of each of the two fixing sleeves (311). A conical surface B (411) is provided on the outer side of each of the two fixing columns (41).

6. The flattening device for producing glass fiber untwisted roving according to claim 5, characterized in that: An L-shaped plate (12) is fixedly installed on the inner side of the working plate (1) corresponding to the fixing plate (11). A slide rod (13) is fixedly installed on the fixing plate (11) and the corresponding L-shaped plate (12). A fixing column (41) is fixedly installed on the outer side of the conical surface B (411). The conical surface B (411) is slidably installed on the outer side of the slide rod (13). A screw (43) is threaded on the inner side of the conical surface B (411). The screw (43) is rotatably installed on the inner side of the fixing plate (11). A connecting rod A (44) is fixedly installed on the end of the two screws (43) that are close to each other. A handwheel (45) is fixedly installed on the outer side of the connecting rod A (44).

7. The flattening device for producing glass fiber untwisted roving according to claim 1, characterized in that: The guide roller (5) is rotatably mounted on the inner side of the corresponding slider B (51) on both sides. The outer side of the working plate (1) is fixedly mounted with a slide rail B (15) corresponding to the slider B (51). The top of the slider B (51) is fixedly mounted with a connecting plate B (52). The outer side of the connecting plate B (52) is provided with an opening (521). The openings (521) on both sides are slidably mounted with the corresponding lifting plates (53) through sliding pins (531). The outer sides of the two lifting plates (53) are fixedly mounted with pulleys (54). The two pulleys (54) are driven by the lifting component (6) to perform lifting and lowering actions.

8. The flattening device for producing glass fiber untwisted roving according to claim 7, characterized in that: The lifting assembly (6) includes two arc-shaped blocks (61), both of which are rotatably disposed on the outside of the working plate (1). A connecting rod B (62) is fixedly disposed on the outside of the arc-shaped blocks (61), and a pull rod B (63) is fixedly disposed on the inner side of the two connecting rods B (62).

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