PTFE short fiber splitting machine

Abstract

The utility model discloses a PTFE (Polytetrafluoroethylene) short fiber splitting machine, and relates to the technical field of fiber processing, two groups of opposite pressure traction mechanisms are symmetrically mounted on two sides of a rack of a shearing table, a tension traction mechanism is mounted in the middle of the rack of the shearing table, two groups of brake seats are symmetrically mounted on two sides of a shaft rod of a rotating shaft, and the two groups of brake seats are symmetrically mounted on two sides of the shaft rod of the rotating shaft. And two sets of opposite pressing rollers are arranged between the two sets of opposite brake seats, and slitting tools opposite to the two sets of opposite pressing rollers are installed on one sides of supports of the brake seats. According to the design, the two groups of opposite-pressing traction mechanisms with adjustable angles are used as driving sources to carry out autonomous propelling and feeding work on fiber materials, the fiber materials are kept in a proper tensioning state to be tensioned and conveyed under the tensioning adjustment of the tensioning traction mechanisms, and then the fiber materials are continuously propelled and fed while the fiber materials are continuously tensioned and conveyed. And continuous slitting work is carried out on the fiber materials which are fed in a circulating mode based on the slitting tool, and good circulating slitting performance is achieved.

Description

Technical Field

[0001] This utility model relates to the field of fiber processing, and in particular to a PTFE short fiber slitting machine. Background Technology

[0002] PTFE fiber, as a type of fiber material, is a polyolefin fiber mainly made from polytetrafluoroethylene (PTFE) as raw material. It is produced by spinning or making it into a film and then cutting or fibrillating it. It is mainly used in high-temperature dust filter belts, sealing belts, self-lubricating bearings, lining cloth for rocket launch pads, artificial blood vessels, and military outerwear. PTFE fiber is usually cut into specified lengths using slitting machines for processing various materials. For example, a PTFE sewing thread slitting device disclosed on the China Patent Network (Announcement No. CN221186659U) is used. This type of slitting device places the material to be cut on a tooling table, and then, based on the linkage combination of the drive component and the slitting component, drives the cutting blades to move up and down reciprocally, thereby driving two sets of cutting blades to cut the PTFE sewing thread on the worktable.

[0003] However, the fiber slitting equipment disclosed in the aforementioned patents and currently used in the market still has some shortcomings: existing slitting equipment has a relatively low active slitting capability for fiber materials, poor cyclic slitting effect, and cannot perform continuous and uninterrupted slitting of fiber materials. Therefore, those skilled in the art have provided a PTFE short fiber slitting machine to solve the problems mentioned in the background art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a PTFE short fiber slitting machine, which solves the problem of poor cyclic slitting effect in existing PTFE fiber slitting equipment mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PTFE short fiber slitting machine, including a shearing table;

[0006] The shearing table has two sets of counter-pressure traction mechanisms installed symmetrically on both sides of its frame, and a tensioning traction mechanism is installed in the middle of the shearing table's frame.

[0007] The counter-pressure traction mechanism includes two sets of rotating seats symmetrically installed along the direction of the shearing table platform, and a rotating shaft is rotatably connected inside the support of the two sets of rotating seats. Two sets of brake seats are symmetrically installed on both sides of the shaft of the rotating shaft, and two sets of counter-pressure rollers are arranged between the two sets of brake seats. A rotating brake assembly for driving the rotating shaft is arranged below the platform of the shearing table.

[0008] The brake seat has a slitting cutter mounted on one side of its support, which is opposite to the two sets of pressure rollers.

[0009] As a further technical solution of this utility model: the rotary braking assembly includes a first electric push rod mounted on the shearing table perpendicular to the direction of the rotating shaft and a brake shaft mounted on the rotating seat horizontally to the direction of the rotating shaft. The telescopic end of the first electric push rod is provided with a brake rack. The middle part of the shaft of the brake shaft is provided with a brake gear that meshes with the brake rack. One end of the shaft of the brake shaft is provided with a transmission gear A, and one end of the shaft of the rotating shaft is provided with a transmission gear B that meshes with the transmission gear A.

[0010] As a further technical solution of this utility model: a brake motor for driving one set of pressure rollers is provided on one side of the support of the brake seat, and the two sets of pressure rollers rotate in opposite directions through two sets of meshing gears.

[0011] As a further technical solution of this utility model: the slitting tool includes two sets of cutting seats installed in a horizontally symmetrical manner on two sets of brake seats. The lower ends of the supports of the two sets of cutting seats opposite each other are equipped with fixed cutting blades, and the upper ends of the supports of the two sets of cutting seats opposite each other are equipped with two sets of third electric push rods. The telescopic ends of the third electric push rods are equipped with matching cutting blades opposite to the fixed cutting blades.

[0012] As a further technical solution of this utility model: the tensioning traction mechanism includes a tensioning frame installed in the middle of the shearing table frame, two sets of first support seats are symmetrically installed in the middle of the support of the tensioning frame, and tensioning rollers are installed between the two sets of first support seats. Two sets of second support seats are symmetrically installed on both sides of the support of the tensioning frame, and a traction roller is installed at the top of the support of each set of second support seats.

[0013] As a further technical solution of this utility model: a track groove is provided in the middle of the support of each group of first support seats, the upper end of the track groove is slidably connected to a guide slide block that supports the tension roller, and the lower end of the track groove is equipped with a second electric push rod that supports the guide slide block.

[0014] This utility model provides a PTFE short fiber slitting machine, which has the following advantages compared with the prior art:

[0015] The PTFE fiber slitting machine designed here uses two sets of angle-adjustable pressure traction mechanisms as the drive source to autonomously feed the fiber material. Under the tension adjustment of the tension traction mechanism, the fiber material is kept in a suitable tension state for tensioning and conveying. Then, while the fiber material is continuously fed, the slitting blades continuously and uninterruptedly slit the cyclically fed fiber material. On the one hand, it has good cyclic slitting performance, enabling continuous and uninterrupted slitting of fiber material. On the other hand, it has flexible control performance, which can flexibly adjust its feeding state according to the site conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a PTFE short fiber slitting machine;

[0017] Figure 2 This is a schematic diagram of the pressure traction mechanism in a PTFE short fiber slitting machine;

[0018] Figure 3 This is a schematic diagram of the tensioning and traction mechanism in a PTFE short fiber slitting machine;

[0019] Figure 4 This is a schematic diagram of the slitting blade in a PTFE short fiber slitting machine.

[0020] In the diagram: 1. Shearing table; 2. Tensioning frame; 3. First support seat; 4. Second support seat; 5. Tensioning roller; 6. Traction roller; 7. Rotating seat; 8. Rotating shaft; 9. Brake seat; 10. Counterweight roller; 11. Slitting cutter; 111. Cutting seat; 112. Fixed cutter; 113. Aligning cutter; 114. Third electric push rod; 12. Aligning gear; 13. First electric push rod; 14. Transmission gear A; 15. Brake rack; 16. Brake gear; 17. Brake shaft; 18. Transmission gear B; 19. Track groove; 20. Second electric push rod; 21. Guide slide; 22. Brake motor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] See also Figure 1-4This utility model provides a technical solution for a PTFE short fiber slitting machine: A PTFE short fiber slitting machine includes a shearing table 1. Two sets of counter-pressure traction mechanisms are symmetrically installed on both sides of the frame of the shearing table 1. The counter-pressure traction mechanism includes two sets of rotating seats 7 symmetrically installed along the platform direction of the shearing table 1, and a rotating shaft 8 is rotatably connected inside the support of the two sets of rotating seats 7. Two sets of brake seats 9 are symmetrically installed on both sides of the shaft of the rotating shaft 8. A rotation brake assembly for driving the rotating shaft 8 is provided below the platform of the shearing table 1. The rotation brake assembly includes a first electric push rod 13 installed on the shearing table 1 perpendicular to the shaft direction of the rotating shaft 8 and a brake shaft 17 installed on the rotating seat 7 horizontally to the shaft direction of the rotating shaft 8. A brake rack 15 is provided at the telescopic end of the first electric push rod 13, and a brake shaft 17 is provided in the middle of the shaft of the brake shaft 17. A brake gear 16 meshes with the brake rack 15, and a transmission gear A14 is provided at one end of the shaft of the brake shaft 17. A transmission gear B18 meshes with the transmission gear A14 at one end of the shaft of the rotating shaft 8. By controlling the extension and retraction of the first electric push rod 13, the brake rack 15 is pushed to brake displacement. The horizontal thrust is converted into rotational thrust by the meshing transmission of the brake rack 15 and the brake gear 16, which drives the brake shaft 17 to rotate, and then drives the transmission gear A14 to rotate. The meshing transmission of the transmission gear A14 and the transmission gear B18 drives the combination of the rotating shaft 8 and the brake seat 9 to rotate and swing, so that the pressure roller 10 is kept at a suitable angle to roll and feed the fiber material, in order to adapt to the complex and ever-changing environment on site. By setting the pressure roller 10 near the slitting cutter 11 to a vertical state (as shown in the attached instruction manual), the pressure roller 10 is designed to be perpendicular to the cutting cutter 11. Figure 2 As shown, the fiber material is pushed out vertically from between the pressure rollers 10 under the action of gravity and falls precisely into the slitting cutter 11 for slitting.

[0023] A tensioning and traction mechanism is installed in the middle of the frame of the shearing table 1. The tensioning and traction mechanism includes a tensioning frame 2 installed in the middle of the frame of the shearing table 1. Two sets of first support seats 3 are symmetrically installed in the middle of the support of the tensioning frame 2, and tensioning rollers 5 are installed between the two sets of first support seats 3. Two sets of second support seats 4 are symmetrically installed on both sides of the support of the tensioning frame 2, and a traction roller 6 is installed at the top of the support of each set of second support seats 4. By pulling the fiber material sequentially from above the traction roller 6 on one side, below the tensioning roller 5, and above the traction roller 6 on the other side, a V-shaped traction state is formed, and the fiber material is tensioned and pulled.

[0024] Each set of first support seats 3 has a track groove 19 in the middle of the support. The upper end of the track groove 19 is slidably connected to the guide slide 21 that supports the tension roller 5, and the lower end of the track groove 19 is equipped with a second electric push rod 20 that supports the guide slide 21. By controlling the extension and braking of the second electric push rod 20, the guide slide 21 is driven to slide down along the track groove 19, which in turn drives the tension roller 5 to move down, tensioning and tightening the fiber material, so that the fiber material is kept in a suitable tension state for conveying and cutting.

[0025] Two sets of pressure rollers 10 are arranged between two opposing sets of brake seats 9. A brake motor 22 is provided on one side of the support of the brake seat 9 to drive one set of pressure rollers 10. The two opposing sets of pressure rollers 10 rotate in opposite directions through two sets of meshing gears 12. By controlling the operation of the brake motor 22 and using the meshing transmission of the meshing gears 12, the two opposing sets of pressure rollers 10 are driven to rotate symmetrically to perform a pressure feeding process on the fiber material, so as to ensure the autonomy and stability of the fiber material feeding.

[0026] A slitting cutter 11 is installed on one side of the support of the brake seat 9, which is opposite to the two sets of pressure rollers 10. The slitting cutter 11 includes two sets of cutting seats 111 installed horizontally symmetrically on the two sets of brake seats 9. Fixed cutters 112 are installed at the lower end of the support of the two sets of cutting seats 111, and two sets of third electric push rods 114 are installed at the upper end of the support of the two sets of cutting seats 111. The telescopic end of the third electric push rod 114 is equipped with a counter-cutting cutter 113 opposite to the fixed cutter 112. When the fiber material is discharged from the fixed cutter 112 and the counter-cutting cutter 113 in a cycle, the counter-cutting cutter 113 is pushed towards the fixed cutter 112 by the third electric push rod 114 to form a shearing state and perform slitting work on the fiber material. The fiber material is cyclically slitted by the counter-cutting of the two sets of cutters.

[0027] The working principle of this utility model is as follows: When using a slitting machine to slit PTFE fiber materials, the conveying position of the fiber materials is adjusted and adapted in advance according to the on-site production conditions. Then, during the adjustment, the first electric push rod 13 is controlled to extend and retract, pushing the combination transmission of the brake rack 15 and the brake gear 16 to convert the horizontal thrust into the rotational thrust, driving the brake shaft 17 to rotate, which in turn drives the combination transmission of the transmission gear A14 and the transmission gear B18, pushing the combination rotation and swing of the rotating shaft 8 and the brake seat 9 to keep the pressure roller 10 at a suitable angle to roll and feed the fiber materials, so as to adapt to the complex and ever-changing on-site environment.

[0028] Further, the fiber material is pulled out through the pressure rollers 10 on one side, and then pulled out sequentially from above the traction roller 6 on one side, below the tension roller 5, and above the traction roller 6 on the other side, forming a V-shaped traction state. Then, the fiber material is pulled out through the pressure rollers 10 on the other side, forming a synchronous left and right roller pressing and conveying state, and the fiber material is roller pressed and conveyed. At the same time, by controlling the extension and retraction braking of the second electric push rod 20, the guide slide 21 is driven to slide down along the track slide 19, which in turn drives the tension roller 5 to move down, tensioning and tightening the fiber material, so that the fiber material is conveyed and cut in a suitable tension state.

[0029] Furthermore, by controlling the operation of the brake motor 22, the meshing transmission of the mating gears 12 is used to drive the two opposing sets of pressure rollers 10 to rotate symmetrically, and the fiber material is fed by the pressure rollers. Finally, it is discharged in a cycle between the fixed cutter 112 and the mating cutter 113 of the slitting cutter 11. At this time, the third electric push rod 114 is used to drive the mating cutter 113 and the fixed cutter 112 to circulate and engage, so as to perform continuous and uninterrupted slitting of the fiber material.

[0030] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A PTFE short fiber slitting machine, characterized in that, Includes a shearing table (1); The shearing table (1) has two sets of counter-pressure traction mechanisms installed symmetrically on both sides of the frame, and a tensioning traction mechanism is installed in the middle of the frame of the shearing table (1). The pressure traction mechanism includes two sets of rotating seats (7) symmetrically installed along the platform direction of the shearing table (1), and the support of the two sets of rotating seats (7) is rotatably connected to a rotating shaft (8). Two sets of brake seats (9) are symmetrically installed on both sides of the shaft of the rotating shaft (8), and two sets of pressure rollers (10) are arranged between the two sets of brake seats (9). A rotating brake assembly for driving the rotating shaft (8) is arranged below the platform of the shearing table (1). The brake seat (9) has a slitting cutter (11) mounted on one side of its support, which is opposite to the two sets of pressure rollers (10).

2. The PTFE short fiber slitting machine according to claim 1, characterized in that, The rotary braking assembly includes a first electric push rod (13) mounted on the shearing table (1) perpendicular to the direction of the rotating shaft (8) and a brake shaft (17) mounted on the rotating seat (7) horizontally to the direction of the rotating shaft (8). The telescopic end of the first electric push rod (13) is provided with a brake rack (15). The middle part of the shaft of the brake shaft (17) is provided with a brake gear (16) that meshes with the brake rack (15). One end of the shaft of the brake shaft (17) is provided with a transmission gear A (14). One end of the shaft of the rotating shaft (8) is provided with a transmission gear B (18) that meshes with the transmission gear A (14).

3. The PTFE short fiber slitting machine according to claim 1, characterized in that, The brake seat (9) has a brake motor (22) on one side of the support to drive one of the pairs of pressure rollers (10). The two pairs of pressure rollers (10) rotate in opposite directions through two sets of meshing gears (12).

4. A PTFE short fiber slitting machine according to claim 1, characterized in that, The slitting cutter (11) includes two sets of cutting seats (111) mounted horizontally and symmetrically on two sets of brake seats (9). Fixed cutters (112) are mounted on the lower ends of the supports of the two sets of cutting seats (111) opposite to each other, and two sets of third electric push rods (114) are mounted on the upper ends of the supports of the two sets of cutting seats (111). The telescopic end of the third electric push rod (114) is equipped with a counter-cutting cutter (113) opposite to the fixed cutter (112).

5. A PTFE short fiber slitting machine according to claim 1, characterized in that, The tensioning and traction mechanism includes a tensioning frame (2) installed in the middle of the shearing table (1) frame. Two sets of first support seats (3) are symmetrically installed in the middle of the support of the tensioning frame (2), and tensioning rollers (5) are installed between the two sets of first support seats (3). Two sets of second support seats (4) are symmetrically installed on both sides of the support of the tensioning frame (2), and traction rollers (6) are installed at the top of the support of each set of second support seats (4).

6. A PTFE short fiber slitting machine according to claim 5, characterized in that, Each of the first support seats (3) has a track groove (19) in the middle of the support. The upper end of the track groove (19) is slidably connected to a guide slide (21) that supports the tension roller (5), and the lower end of the track groove (19) is equipped with a second electric push rod (20) that supports the guide slide (21).

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