PTFE (Polytetrafluoroethylene) base cloth flattening mechanism

Abstract

The invention relates to the technical field of cloth paving, in particular to a PTFE (polytetrafluoroethylene) base cloth paving mechanism which comprises a paving platform, and the top end of the paving platform is fixedly connected with a fixing frame; and the local fixing assembly comprises two moving blocks moving in the opposite directions, telescopic cylinders are fixedly connected to the bottom ends of the moving blocks, sliding rods are slidably connected to the inner walls of the telescopic cylinders, and smoothing blocks are fixedly connected to the bottom ends of the sliding rods. When the sliding rod drives the smoothing block to move downwards, the conducting strip synchronously moves on the resistance plate, the conducting strip and the resistance plate form a sliding rheostat, the thicker the base cloth is, the larger the resistance is, and the PLC can calculate the thickness of the base cloth by detecting current changes in a loop. Meanwhile, the current of the slide rheostat can be introduced into the N-stage electromagnet and the S-stage electromagnet, the magnetic field intensity is changed according to the magnitude of the current, then the hardness of the magnetorheological fluid is adjusted, the magnetorheological fluid generates counter-acting force on the sliding rod, and therefore the pressure of the smoothing block on the base cloth is adjusted in a self-adaptive mode according to the thickness of the base cloth.

Description

Technical Field

[0001] The invention relates to the technical field of cloth flattening, and in particular to a PTFE base cloth flattening mechanism. Background Art

[0002] PTFE base cloth (hereinafter referred to as base cloth) is a high-performance fiber fabric made of polytetrafluoroethylene (PTFE) as the main raw material. Generally, PTFE resin is first made into fibers through a special processing technology, and then the fibers are woven into a cloth-like structure through weaving and other methods. In the production process of the base cloth, it is usually necessary to flatten the base cloth. For example, the flattened base cloth can enable the detection equipment to perform quality inspection on the base cloth more comprehensively and accurately. When performing thickness inspection and defect inspection, the flat surface can ensure that the detection instrument is in full contact with the surface of the base cloth, obtain accurate data and image information, and promptly discover quality problems such as uneven thickness, holes, and cracks in the base cloth. For example, a PTFE base cloth flattening device disclosed in application number CN202320706678.6 is used to flatten the PTFE base cloth for subsequent processing.

[0003] When the existing flattening mechanism processes the base fabric, there are some cases where the base fabric needs to be flattened piece by piece. The reason is that by flattening the base fabric piece by piece, the operator can check the quality of each base fabric more carefully and find out the possible defects, holes, fiber breakage and other problems on the base fabric in time. For small pieces of base fabric with quality problems, they can be marked or processed in time to avoid unqualified products from entering the next process. Since the base fabric is relatively soft, when the existing base fabric flattening mechanism is used to flatten the base fabric, the airflow generated by the fan is transported to the air nozzle through a pipeline, and the air nozzle blows the airflow evenly to the surface of the base fabric, thereby flattening the base fabric. Before using the air flow to flatten the base fabric, one end of the base fabric usually needs to be fixed. This fixing process is mostly done manually. However, due to the softness of the base fabric, when fixing manually, the tension is likely to be too large or too small, resulting in excessive stretching or insufficient flattening of the base fabric, which in turn results in the base fabric not being able to be flattened during subsequent wind flattening. Although wind power is currently used to flatten the base cloth, the wind force is adjusted according to the thickness of the base cloth, but an additional detection instrument is needed to detect the thickness of the base cloth, and then the wind force is adjusted by the staff. The thickness cannot be automatically measured when one end of the base cloth is fixed, and the wind force cannot be automatically adjusted according to the thickness, which increases the operation links and time costs. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a PTFE base cloth flattening mechanism, which can effectively solve the problems in the prior art that manually fixing one end of the base cloth will cause tension on the base cloth, and the thickness cannot be automatically measured and the wind force cannot be automatically adjusted when one end of the base cloth is fixed.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a PTFE base cloth paving mechanism, comprising: A paving platform, the top of which is fixedly connected with a fixing frame; A local fixed component, the local fixed component includes two moving blocks moving in opposite directions, the bottom ends of the moving blocks are fixedly connected with telescopic cylinders, the inner wall of the telescopic cylinder is slidably connected with a slide rod, the bottom end of the slide rod is fixedly connected with a smoothing block, and the local fixed component also includes a thickness detection structure for detecting the thickness of the base fabric; A paving assembly, the paving assembly includes a first blower for horizontal flattening, the top end of the first blower is fixedly connected to a first electric telescopic rod, the outer wall of the telescopic end of the first electric telescopic rod is fixedly connected to two symmetrical support plates, the outer walls of the two support plates are respectively fixedly connected to first motors, the output ends of the two first motors are fixedly connected to rotating rods, and the driving directions of the two first motors are opposite, and a plurality of second blowers are arranged in a circular array on the outer wall of the rotating rod.

[0006] Preferably, the local fixed component also includes a first sliding shell fixedly connected to the inner wall of the fixed frame, the outer wall of the fixed frame is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a first reciprocating screw, the other end of the first reciprocating screw is fixedly connected to a second reciprocating screw, the driving directions of the first reciprocating screw and the second reciprocating screw are opposite, the two moving blocks are respectively sleeved on the outer walls of the first reciprocating screw and the second reciprocating screw, and the moving blocks are slidably connected to the inner wall of the first sliding shell.

[0007] Preferably, the outer wall of the first sliding shell is fixedly connected to a liquid storage tank, the interior of the liquid storage tank is infused with magnetorheological fluid, the bottom end of the liquid storage tank is fixedly connected to two symmetrical liquid pumps, the liquid pumping ends of the liquid pumps are connected to the interior of the liquid storage tank, the output ends of the two liquid pumps are connected to the interiors of two telescopic cylinders, respectively, the interior of the telescopic cylinder is provided with two symmetrical storage tanks, and the inner walls of the two storage tanks are fixedly connected to N-level electromagnets and S-level electromagnets, respectively.

[0008] Preferably, the thickness detection structure includes an extension plate fixedly connected to the outer wall of one of the telescopic cylinders, the other end of the extension plate is fixedly connected to a resistor plate, the outer wall of the resistor plate is in sliding contact with a conductive sheet fixedly connected to the outer wall of the slide rod, a pressure sensor is embedded in the bottom end of the smoothing block, the conductive sheet and the resistor plate are electrically connected by a PLC controller to form a detection circuit, the conductive sheet and the resistor plate constitute a sliding rheostat, during the sliding process of the conductive sheet on the resistor plate downward, the resistance of the sliding rheostat in the first detection circuit gradually increases, the N-level electromagnet, the S-level electromagnet are electrically connected to the sliding rheostat to form a pressure adaptive adjustment circuit, and the PLC controller is electrically connected to the pressure sensor and the liquid pump to form a control circuit.

[0009] Preferably, the paving assembly includes a bearing plate fixedly connected to a fixed frame away from the outer wall of the first sliding shell, a second sliding shell is fixedly connected between the inner wall of the bearing plate and the second sliding shell, a third motor is fixedly connected to the outer wall of the bearing plate, a threaded rod is fixedly connected to the output end of the third motor, a connecting block is threadedly connected to the outer wall of the threaded rod, the outer wall of the connecting block is slidably connected to the inner wall of the second sliding shell, and the bottom end of the connecting block is fixedly connected to the fixed end of the first electric telescopic rod.

[0010] Preferably, the blowing end of the first blower is inclined downward and toward the side away from the smoothing block, and the blowing ends of multiple second blowers blow air laterally to the base fabric. The first blower, the second blower and the PLC controller are electrically connected to form a paving circuit.

[0011] Preferably, it also includes an electrostatic removal component, which includes a fixed plate fixedly connected to the output ends of the two second motors, the outer wall of the fixed plate is fixedly connected with a conductive scraper inclined downward, the outer walls on both sides of the conductive scraper are fixedly connected with conductive rods, the inner walls on both sides of the fixed frame are fixedly connected with grounding power-on plates, the conductive rods are intermittently in contact with the grounding power-on plates, and the inclination direction of the conductive scraper is toward the first blower, and the PLC controller is connected to the electrical signals of the first motor, the second motor, and the third motor to form a starting circuit.

[0012] Preferably, the top ends of the two support plates are fixedly connected with infrared transmitters, the inner top wall of the fixed frame is fixedly connected with two rows of infrared receivers, and the two rows of infrared receivers are distributed on both sides of the second sliding shell, and the infrared receivers in each column are in the same longitudinal horizontal plane as an infrared transmitter on the same side, and a second electric telescopic rod is provided on the side of each infrared receiver away from the second sliding shell, the fixed end of the second electric telescopic rod is fixedly connected to the top end of the fixed frame, and the telescopic ends of the second electric telescopic rod are fixedly connected with extrusion blocks, and the PLC controller is electrically connected to the infrared receiver, the infrared transmitter, and the second electric telescopic rod to form a fixed loop.

[0013] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: 1. When the slider drives the smoothing block to move downward, the conductive sheet moves synchronously on the resistor plate, and the two form a sliding rheostat. The thicker the base fabric, the greater the resistance. The PLC controller can calculate the thickness of the base fabric by detecting the current change in the loop. At the same time, the current of the sliding rheostat will pass into the N-level electromagnet and the S-level electromagnet, and the magnetic field strength will be changed according to the current size, thereby adjusting the hardness of the magnetorheological fluid. The magnetorheological fluid produces a reaction force on the slider, thereby adaptively adjusting the pressure of the smoothing block on the base fabric according to the thickness of the base fabric. In this way, no matter how thick the base fabric is, the smoothing block can act on the base fabric with appropriate pressure to avoid damage to the base fabric or poor smoothing effect due to improper pressure. Finally, the smoothing block moves to opposite sides to fix one end of the base fabric.

[0014] 2. In the flattening component, the first blower blows air to the base fabric horizontally. At the same time, the first motor drives the rotating rod to rotate, so that the multiple second blowers distributed in a circular array rotate accordingly, thereby applying wind force to the base fabric from different angles. These wind forces will generate a force that stretches the base fabric to both sides, thereby stretching the base fabric and unfolding the wrinkles. In addition, the PLC controller can control the air output of the first blower and the second blower according to the thickness of the base fabric. Compared with the wind force in a fixed direction, this multi-angle blowing method can more effectively stretch the wrinkles in different directions on the base fabric, thereby better eliminating complex and irregular wrinkles and further improving the flatness of the base fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the internal part of the present invention; Figure 3 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the internal part cross-section three-dimensional structure of the present invention; Figure 5 It is a partial three-dimensional structural schematic diagram of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the local fixing component of the present invention.

[0017] Figure numerals: 1, paving platform; 2, fixed frame; 3, local fixed assembly; 31, moving block; 32, telescopic cylinder; 33, sliding rod; 34, smoothing block; 35, thickness detection structure; 351, extension plate; 352, resistor plate; 353, conductive sheet; 36, first sliding shell; 37, second motor; 38, first reciprocating screw rod; 39, second reciprocating screw rod; 310, liquid storage tank; 311, liquid pump; 312, storage tank; 313, N-level electromagnet; 314, S-level electromagnet; 4 , paving assembly; 41, first blower; 42, second blower; 43, first electric telescopic rod; 44, support plate; 45, first motor; 46, rotating rod; 47, bearing plate; 48, second sliding shell; 49, third motor; 410, threaded rod; 411, connecting block; 5, static electricity removal assembly; 51, fixing plate; 52, conductive scraper; 53, conductive rod; 54, grounding power plate; 6, infrared transmitter; 7, infrared receiver; 8, second electric telescopic rod; 9, extrusion block. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The present invention will be further described below in conjunction with the embodiments.

[0020] Example: Refer to Figures 1 to 6 , a PTFE base fabric paving mechanism, comprising: A paving platform 1, the top of which is fixedly connected with a fixing frame 2; One end of the base fabric is flattened and fixed by the local fixing component 3, referring to Figure 1 , Figure 3 , Figure 4 , Figure 6 The local fixed component 3 includes two moving blocks 31 moving in opposite directions, the bottom ends of the moving blocks 31 are fixedly connected with telescopic cylinders 32, the inner wall of the telescopic cylinder 32 is slidably connected with a slide rod 33, the bottom end of the slide rod 33 is fixedly connected with a smoothing block 34, and the local fixed component 3 also includes a thickness detection structure 35 for detecting the thickness of the base fabric; Among them, the local fixed component 3 also includes a first sliding shell 36 fixedly connected to the inner wall of the fixed frame 2, the outer wall of the fixed frame 2 is fixedly connected to the second motor 37, the output end of the second motor 37 is fixedly connected to the first reciprocating screw rod 38, the other end of the first reciprocating screw rod 38 is fixedly connected to the second reciprocating screw rod 39, the driving directions of the first reciprocating screw rod 38 and the second reciprocating screw rod 39 are opposite, the two moving blocks 31 are respectively sleeved on the outer walls of the first reciprocating screw rod 38 and the second reciprocating screw rod 39, and the moving blocks 31 are slidably connected to the inner wall of the first sliding shell 36.

[0021] Among them, the outer wall of the first sliding shell 36 is fixedly connected to a liquid storage tank 310, the interior of the liquid storage tank 310 is perfused with magnetorheological fluid, and the bottom end of the liquid storage tank 310 is fixedly connected to two symmetrical liquid pumps 311, the liquid pumping end of the liquid pump 311 is connected to the interior of the liquid storage tank 310, and the output ends of the two liquid pumps 311 are respectively connected to the interior of the two telescopic cylinders 32, and the interior of the telescopic cylinder 32 is provided with two symmetrical storage grooves 312, and the inner walls of the two storage grooves 312 are respectively fixedly connected with N-level electromagnets 313 and S-level electromagnets 314, wherein the output end of the liquid pump 311 is connected to the interior of the telescopic cylinder 32 through a soft delivery pipe.

[0022] The thickness of the base fabric is tested through the following specific structure, refer to Figure 6 The thickness detection structure 35 includes an extension plate 351 fixedly connected to the outer wall of one of the telescopic cylinders 32, and the other end of the extension plate 351 is fixedly connected to a resistor plate 352. The outer wall of the resistor plate 352 slides in contact with a conductive sheet 353 fixedly connected to the outer wall of the slide rod 33. A pressure sensor is embedded at the bottom end of the smoothing block 34. The conductive sheet 353 and the resistor plate 352 are electrically connected to a PLC controller to form a detection circuit. The conductive sheet 353 and the resistor plate 352 constitute a sliding rheostat. When the conductive sheet 353 slides downward on the resistor plate 352, the resistance of the sliding rheostat in the first detection circuit gradually increases. The N-level electromagnet 313 and the S-level electromagnet 314 are electrically connected to the sliding rheostat to form a pressure adaptive adjustment circuit. The PLC controller is electrically connected to the pressure sensor and the liquid pump 311 to form a control circuit.

[0023] The base fabric is laid flat by the laying component 4, referring to Figures 1 to 3 , Figure 5The paving assembly 4 includes a first blower 41 for horizontal leveling, a first electric telescopic rod 43 is fixedly connected to the top end of the first blower 41, two symmetrical support plates 44 are fixedly connected to the outer wall of the telescopic end of the first electric telescopic rod 43, first motors 45 are fixedly connected to the outer walls of the two support plates 44, and a rotating rod 46 is fixedly connected to the output ends of the two first motors 45, and the driving directions of the two first motors 45 are opposite, and a plurality of second blowers 42 are arranged in a circular array on the outer wall of the rotating rod 46.

[0024] Among them, the paving assembly 4 includes a supporting plate 47 fixedly connected to the fixed frame 2 away from the outer wall of the first sliding shell 36, a second sliding shell 48 is fixedly connected between the inner wall of the supporting plate 47 and the second sliding shell 48, a third motor 49 is fixedly connected to the outer wall of the supporting plate 47, a threaded rod 410 is fixedly connected to the output end of the third motor 49, a connecting block 411 is threadedly connected to the outer wall of the threaded rod 410, an outer wall of the connecting block 411 is slidably connected to the inner wall of the second sliding shell 48, and a bottom end of the connecting block 411 is fixedly connected to the fixed end of the first electric telescopic rod 43, wherein the second sliding shell 48 is driven to rotate by the third motor 49 and the connecting block 411 is limited by the second sliding shell 48, so that the connecting block 411 drives the paving assembly 4 to move, so as to pave the entire base cloth.

[0025] Among them, the blowing end of the first blower 41 is inclined downward and toward the side away from the smoothing block 34, and the blowing ends of multiple second blowers 42 blow air horizontally to the base fabric. The first blower 41 and the second blower 42 are connected to the PLC controller by electrical signals to form a paving circuit.

[0026] The static electricity on the base fabric is removed by the static electricity removal component 5. Figure 2 The static removal component 5 includes a fixed plate 51 fixedly connected to the output ends of the two second motors 37, the outer wall of the fixed plate 51 is fixedly connected with a conductive scraper 52 inclined downward, the outer walls of the conductive scraper 52 on both sides are fixedly connected with conductive rods 53, the inner walls of the fixed frame 2 on both sides are fixedly connected with grounding power-on plates 54, the conductive rods 53 are intermittently in contact with the grounding power-on plates 54, and the inclination direction of the conductive scraper 52 is toward the first blower 41, and the PLC controller is connected with the first motor 45, the second motor 37, and the third motor 49 electrical signals to form a starting circuit.

[0027] The flattened base fabric is fixed by the following specific structure, refer to Figure 5The top ends of the two support plates 44 are fixedly connected with infrared transmitters 6, the inner top wall of the fixed frame 2 is fixedly connected with two rows of infrared receivers 7, and the two rows of infrared receivers 7 are distributed on both sides of the second sliding shell 48, and the infrared receivers 7 in each row are in the same longitudinal horizontal plane as an infrared transmitter 6 on the same side, and a second electric telescopic rod 8 is provided on the side of each infrared receiver 7 away from the second sliding shell 48, the fixed end of the second electric telescopic rod 8 is fixedly connected to the top end of the fixed frame 2, and the telescopic ends of the second electric telescopic rod 8 are fixedly connected with extrusion blocks 9, and the PLC controller is connected with the infrared receiver 7, the infrared transmitter 6, and the second electric telescopic rod 8 by electrical signals to form a fixed loop.

[0028] The working principle of the present invention is as follows: First, place a piece of base cloth on the laying platform 1, and then place one end of it directly under the smoothing block 34. After placing it, the two sides of the base cloth need to be symmetrical without serious deviation (slight deviation is allowed). Then start the liquid pump 311, and extract the magnetorheological fluid in the liquid storage tank 310 through the liquid pump 311, and then discharge it into the telescopic cylinder 32, thereby pushing the slide bar 33 to move downward, so that the slide bar 33 drives the smoothing block 34 to contact with the base cloth. After contacting with the base cloth, the pressure sensor will sense an electrical signal. After the pressure sensor senses the electrical signal, it means that the smoothing block 34 is in contact with the base cloth. However, in order to ensure that a little pressure is applied to the base cloth (so that the base cloth can be smoothed later), it is necessary to continue to inject a little magnetorheological fluid into the telescopic cylinder 32 (the injection amount is proportional to the thickness of the base cloth); When the slide bar 33 drives the smoothing block 34 to move downward, it will drive the conductive sheet 353 to move downward synchronously on the resistor plate 352, thereby changing the current passing through the sliding rheostat (the thicker the base fabric, the greater the resistance of the resistor plate 352, and the greater the current passing through the N-level electromagnet 313 and the S-level electromagnet 314), and then the current detection module in the PLC controller detects the magnitude of the current, and then calculates the thickness of the base fabric through the current; Then, the current is passed through the sliding rheostat to the N-level electromagnet 313 and the S-level electromagnet 314. Since the magnetorheological fluid is usually composed of micron-sized magnetic particles, carrier fluid and additives, when there is no external magnetic field, the magnetorheological fluid exhibits the characteristics of a fluid and can flow freely. The magnetic field strength of the N-level electromagnet 313 and the S-level electromagnet 314 is proportional to the magnitude of the current passing through it. By increasing the current in the N-level electromagnet 313 and the S-level electromagnet 314, the magnetic field strength can be enhanced, thereby causing the magnetic particles in the magnetorheological fluid to be subjected to a stronger magnetic force, forming more and tighter chain or columnar structures, making the magnetorheological fluid harder (even when the current passing through the N-level electromagnet 313 and the S-level electromagnet 314 is the largest, the magnetorheological fluid will not become very hard). The reason is that when the current passed through the N-level electromagnet 313 and the S-level electromagnet 314 changes from large to small, the magnetorheological fluid will react to the sliding rod 313. The reaction force of 3 gradually decreases. Since the thinner base fabric has good flexibility, it can easily follow the movement of the two smoothing blocks 34 when they move in opposite directions. Moreover, the positive pressure between it and the smoothing blocks 34 and other contact surfaces is small, so it encounters little obstruction during the smoothing process and can be paved without much pressure. However, the thicker base fabric has greater rigidity and strong resistance to deformation. Moreover, due to its own weight and other factors, it has greater positive pressure and friction between it and the smoothing blocks 34 and other contact surfaces. During the smoothing process, it needs to overcome greater friction. Therefore, it requires slightly greater pressure to make the smoothing blocks 34 move in opposite directions and pave it flat. The process of the smoothing blocks 34 smoothing the base fabric is as follows: First, after the electrical signal emitted by the pressure sensor is received by the PLC controller, the second motor 37 is controlled to start by the PLC controller, and the first reciprocating screw 38 and the second reciprocating screw 39 are driven by the second motor 37 to rotate synchronously. Since the moving directions of the driving moving block 31 of the first reciprocating screw 38 and the second reciprocating screw 39 are opposite, the moving block 31 will drive the telescopic cylinder 32, the sliding rod 33 and the smoothing block 34 to move to both sides on the surface of the base cloth, thereby smoothing the base cloth. Through manual observation, when the smoothing block 34 moves to the ends of both sides of the base cloth, the second motor 37 is manually turned off to make the smoothing block 34 squeeze and fix the base cloth.

[0029] Then, the PLC controller controls the third motor 49 to start, the first motor 45 to start, the first blower 41, the second blower 42, and the first electric telescopic rod 43 to start (the extension length of the first electric telescopic rod 43 is calculated according to the thickness of the base cloth, so that the bottom end of the conductive scraper 52 contacts the upper surface of the base cloth), and the threaded rod 410 is driven to rotate by the third motor 49. Through the rotation of the threaded rod 410 and the limiting of the connecting block 411 by the second sliding shell 48, the connecting block 411 drives the first electric telescopic rod 43, the first blower 41, the first motor 45, and the second blower 42 to move synchronously, wherein the first blower 41 and the second blower 42 output air volume through the PLC controller, and the air volume is proportional to the thickness of the base cloth. The first blower 41 blows the base cloth horizontally, and the base cloth is flattened by wind force. During the movement of the blower 41, the rotating rod 46 is driven to rotate by the first motor 45, and the second blower 42 is driven to rotate by the rotating rod 46. The wind blown by the second blower 42 will apply a force to the surface of the base cloth. When the wind blows horizontally to both sides of the base cloth, a force is generated to stretch the base cloth to both sides. This force can stretch the base cloth and unfold the wrinkles or unevenness that may exist on the base cloth. The rotating second blower 42 can apply wind force to the base cloth from different angles. When the second blower 42 is in different rotation positions, the direction of the wind force on the base cloth will change. This multi-angle force can more effectively stretch the wrinkles in different directions on the base cloth, so that the base cloth can be fully stretched and smoothed in all directions. Compared with the wind force in a fixed direction, it can better eliminate complex and irregular wrinkles and improve the flatness of the base cloth.

[0030] And in this process, when the conductive scraper 52 contacts the surface of the base fabric, the static electricity is transmitted to the grounding power plate 54 through the conductive rod 53. These static electricity charges will quickly diffuse to the ground and neutralize with the opposite charges in the ground, thereby eliminating the static electricity on the surface of the base fabric, and finally restoring the charge distribution on the surface of the base fabric to a balanced state, thereby preventing the influence of static electricity on wind smoothing.

[0031] And during the movement of the support plate 44, the two infrared transmitters 6 will be driven to move synchronously. When the infrared receiver 7 receives the infrared rays emitted by the infrared transmitter 6, it means that the first blower 41 and the second blower 42 are smoothing the base cloth. If the infrared receiver 7 that has just received the infrared rays cannot receive the infrared rays, it means that the first blower 41 and the second blower 42 have continued to move forward to smoothen the base cloth. Therefore, the second electric telescopic rod 8 can be controlled to start by the PLC controller, and the extrusion block 9 is driven to move downward by the second electric telescopic rod 8, so as to extrude and fix the base cloth.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A PTFE base fabric paving mechanism, characterized in that: include: A paving platform (1), wherein the top of the paving platform (1) is fixedly connected to a fixing frame (2); A local fixing component (3), the local fixing component (3) comprising two moving blocks (31) moving in opposite directions, the bottom ends of the moving blocks (31) being fixedly connected to telescopic cylinders (32), the inner wall of the telescopic cylinders (32) being slidably connected to a slide rod (33), the bottom end of the slide rod (33) being fixedly connected to a smoothing block (34), the local fixing component (3) further comprising a thickness detection structure (35) for detecting the thickness of the base fabric; A paving assembly (4), the paving assembly (4) comprising a first blower (41) for horizontal flattening, the top end of the first blower (41) being fixedly connected to a first electric telescopic rod (43), the outer wall of the telescopic end of the first electric telescopic rod (43) being fixedly connected to two symmetrical support plates (44), the outer walls of the two support plates (44) being respectively fixedly connected to first motors (45), the output ends of the two first motors (45) being fixedly connected to rotating rods (46), the driving directions of the two first motors (45) being opposite, and a plurality of second blowers (42) being arranged in a circular array on the outer wall of the rotating rod (46).

2. A PTFE base fabric flattening mechanism according to claim 1, characterized in that: The local fixing component (3) further comprises a first sliding shell (36) fixedly connected to the inner wall of the fixing frame (2); a second motor (37) is fixedly connected to the outer wall of the fixing frame (2); an output end of the second motor (37) is fixedly connected to a first reciprocating screw (38); the other end of the first reciprocating screw (38) is fixedly connected to a second reciprocating screw (39); the driving directions of the first reciprocating screw (38) and the second reciprocating screw (39) are opposite; the two moving blocks (31) are respectively sleeved on the outer walls of the first reciprocating screw (38) and the second reciprocating screw (39); and the moving blocks (31) are slidably connected to the inner wall of the first sliding shell (36).

3. A PTFE base fabric paving mechanism according to claim 2, characterized in that: The outer wall of the first sliding shell (36) is fixedly connected to a liquid storage tank (310), the interior of the liquid storage tank (310) is filled with magnetorheological fluid, the bottom end of the liquid storage tank (310) is fixedly connected to two symmetrical liquid pumps (311), the liquid pumping ends of the liquid pumps (311) are in communication with the interior of the liquid storage tank (310), the output ends of the two liquid pumps (311) are respectively in communication with the interior of two telescopic cylinders (32), the interior of the telescopic cylinder (32) is provided with two symmetrical storage grooves (312), the inner walls of the two storage grooves (312) are respectively fixedly connected to an N-class electromagnet (313) and an S-class electromagnet (314).

4. A PTFE base fabric paving mechanism according to claim 3, characterized in that: The thickness detection structure (35) comprises an extension plate (351) fixedly connected to the outer wall of one of the telescopic cylinders (32); the other end of the extension plate (351) is fixedly connected to a resistor plate (352); the outer wall of the resistor plate (352) is in sliding contact with a conductive sheet (353) fixedly connected to the outer wall of the slide rod (33); a pressure sensor is embedded at the bottom end of the smoothing block (34); the conductive sheet (353) and the resistor plate (352) are electrically connected to a PLC controller to form a detection circuit; the conductive sheet (353) and the resistor plate (352) constitute a sliding rheostat; during the sliding downward of the conductive sheet (353) on the resistor plate (352), the resistance of the sliding rheostat in the first detection circuit gradually increases; the N-level electromagnet (313), the S-level electromagnet (314) are electrically connected to the sliding rheostat to form a pressure adaptive adjustment circuit; the PLC controller is electrically connected to the pressure sensor and the liquid pump (311) to form a control circuit.

5. A PTFE base fabric paving mechanism according to claim 4, characterized in that: The paving assembly (4) comprises a bearing plate (47) fixedly connected to the outer wall of the first sliding shell (36) on the fixing frame (2), the second sliding shell (48) being fixedly connected between the inner wall of the bearing plate (47) and the second sliding shell (48), the outer wall of the bearing plate (47) being fixedly connected to a third motor (49), the output end of the third motor (49) being fixedly connected to a threaded rod (410), the outer wall of the threaded rod (410) being threadedly connected to a connecting block (411), the outer wall of the connecting block (411) being slidably connected to the inner wall of the second sliding shell (48), and the bottom end of the connecting block (411) being fixedly connected to the fixed end of the first electric telescopic rod (43).

6. A PTFE base fabric paving mechanism according to claim 5, characterized in that: The blowing end of the first blower (41) is tilted downward and faces a side away from the smoothing block (34), and the blowing ends of the plurality of second blowers (42) blow air horizontally to the base fabric. The first blower (41) and the second blower (42) are connected to the PLC controller via electrical signals to form a paving circuit.

7. A PTFE base fabric paving mechanism according to claim 4, characterized in that: It also comprises a static electricity removal component (5), the static electricity removal component (5) comprising a fixed plate (51) fixedly connected to the output ends of the two second motors (37), the outer wall of the fixed plate (51) being fixedly connected to a conductive scraper (52) inclined downward, the outer walls on both sides of the conductive scraper (52) being fixedly connected to conductive rods (53), the inner walls on both sides of the fixed frame (2) being fixedly connected to grounding power sheets (54), the conductive rods (53) being in intermittent contact with the grounding power sheets (54), and the conductive scraper (52) being inclined in a direction toward the first blower (41), and the PLC controller being connected to the first motor (45), the second motor (37), and the third motor (49) by electrical signals to form a start-up circuit.

8. A PTFE base fabric paving mechanism according to claim 4, characterized in that: The top ends of the two support plates (44) are fixedly connected to an infrared transmitter (6), the inner top wall of the fixed frame (2) is fixedly connected to two rows of infrared receivers (7), and the two rows of infrared receivers (7) are distributed on both sides of the second sliding shell (48), and the infrared receivers (7) in each row and an infrared transmitter (6) on the same side are located in the same longitudinal horizontal plane, and a second electric telescopic rod (8) is provided on a side of each infrared receiver (7) away from the second sliding shell (48), the fixed end of the second electric telescopic rod (8) is fixedly connected to the top end of the fixed frame (2), and the telescopic end of the second electric telescopic rod (8) is fixedly connected to an extrusion block (9), and the PLC controller is connected to the infrared receiver (7), the infrared transmitter (6), and the second electric telescopic rod (8) by electrical signals to form a fixed loop.

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