Dewaxing device for glass fiber cloth processing

Abstract

The invention relates to the technical field of glass fiber cloth production, in particular to a dewaxing device for glass fiber cloth processing, which comprises a base frame and a dewaxing box, the dewaxing box is fixedly mounted on the base frame, and electric traction rollers for conveying glass fiber cloth are arranged at the upper and lower ports of the dewaxing box; guide rollers are rotationally mounted at the upper part and the lower part of the inner wall of the dewaxing box in pairs; the dewaxing device further comprises a plurality of opening rollers rotationally installed on the inner wall of the dewaxing box, the opening rollers are alternately distributed in an S shape, a hot air pipe is assembled on the outer wall of the dewaxing box, and the hot air pipe is sequentially communicated with the opening rollers. The opening rollers which are alternately arranged in an S shape are matched with an internal piston-opening plate structure, a cloth cover is automatically expanded and tightly supported under the driving of hot air pressure, and hot air uniformly penetrates through the glass fiber cloth from inside to outside and from outside to inside in combination with a three-dimensional hot air permeation system formed by dense nozzles of the opening plates and a lateral air inlet pipe of the dewaxing box, so that the dewaxing effect is improved. And the dewaxing speed and the dewaxing thoroughness are improved.

Description

Technical Field

[0001] This invention relates to the field of glass fiber cloth production technology, and in particular to a dewaxing device for glass fiber cloth processing. Background Technology

[0002] Fiberglass cloth, as an important basic industrial material, is widely used in electronics, aerospace, building materials, and composite materials. During the production of fiberglass cloth, a sizing agent, typically wax-based or organic oil-based, is usually coated onto the fiber surface to protect the fibers and facilitate subsequent processing. Before further processing, these sizing agents must be completely removed through a dewaxing process to ensure good adhesion between the fibers and matrix materials such as resins. Currently, common dewaxing methods include hot air circulation, steam heating, and high-temperature combustion, all of which utilize heat energy to cause the sizing agent to volatilize or decompose.

[0003] A search revealed that invention CN118461251B, authorized by patent number CN118461251B, discloses a dewaxing device for fiberglass cloth. The device includes a base on which a steam device, a vacuum pump, and a hot air device are mounted. A lower worktable is mounted on the top of the base, and an upper worktable is mounted on top of the lower worktable. Ears are symmetrically mounted on the left and right side walls of the upper worktable. Two hydraulic presses are mounted on the top wall of the base, with their output ends connected to the bottom of the ear seats. This device, by setting up an upper and lower worktable, with a lower cavity within the lower worktable, connects to the steam and hot air devices via an airflow channel, allowing steam to dewax the fiberglass cloth.

[0004] However, the dewaxing equipment still has limitations in use. First, because it uses hot air or steam for heating and relies on external heat conduction, it is difficult to quickly and evenly penetrate the porous structure of the fiberglass cloth, resulting in uneven heating of the inner and outer layers, incomplete dewaxing, or local overheating. Second, the equipment adopts a closed-type structure, which requires intermittent shutdowns to open the chamber for feeding, making continuous production impossible, resulting in low efficiency and serious waste of heat energy. Therefore, it is necessary to design a dewaxing device for fiberglass cloth processing to improve the quality of fiberglass cloth dewaxing. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a dewaxing device for processing glass fiber cloth.

[0006] The technical implementation of this invention is as follows: A dewaxing device for processing glass fiber cloth includes a base frame and a dewaxing box. The base frame forms the load-bearing structure of the dewaxing device. The dewaxing box is fixedly installed on the base frame. The dewaxing box is used to dry and dewax the glass fiber cloth. Electric traction rollers for conveying the glass fiber cloth are provided at both the upper and lower ends of the dewaxing box. Guide rollers for guiding the glass fiber cloth are rotatably installed in pairs on the upper and lower parts of the inner wall of the dewaxing box. The device also includes multiple spreading rollers rotatably installed on the inner wall of the dewaxing box. The spreading rollers are arranged alternately in an "S" shape and are used to roll and spread the glass fiber cloth. A hot air pipe is assembled on the outer wall of the dewaxing box. The hot air pipe is sequentially connected to each spreading roller and is used to connect to an external hot air generating device. Multiple [unclear text - possibly related to a device or equipment] are spaced apart on the inner walls of the dewaxing box corresponding to the spreading rollers. The air inlet pipe has an air inlet facing the spreading roller. The hot air pipe is connected to the corresponding air inlet pipe through branch pipes on both sides. The spreading roller includes a cylindrical roller frame rotatably connected to the inner wall of the dewaxing chamber. Both ends of the cylindrical roller frame are fixedly connected to the mounting pipe. One end of the mounting pipe is connected to the hot air pipe. Multiple spreading plates are circumferentially slidably connected to the cylindrical roller frame. The spreading plates are hollow plates with multiple nozzles densely distributed on them. Piston cylinders corresponding to the spreading plates are circumferentially installed inside the cylindrical roller frame. Piston plates are slidably connected inside the piston cylinders. The piston plates are connected to the nozzles of the corresponding spreading plates through multiple connecting pipes. The mounting pipes connected to the hot air pipe are connected to each piston cylinder through flexible hoses. The inner walls of the upper and lower ends of the dewaxing chamber are provided with sealing mechanisms to separate the inside and outside of the dewaxing chamber.

[0007] As an improvement to the above solution, fiberglass collection covers are fixedly installed on the upper and lower parts of the inner wall of the dewaxing box near the guide roller. The fiberglass collection cover has an opening in the middle for the fiberglass cloth to pass through. The fiberglass collection cover is used to collect fiberglass fuzz or debris generated during the heating and dewaxing process of the fiberglass cloth. The fiberglass collection cover is connected to a discharge pipe.

[0008] As an improvement to the above solution, the sealing mechanism includes a mounting frame fixedly installed on the inner wall of the upper and lower parts of the dewaxing box. The middle frame of the mounting frame has a guide opening for the glass fiber cloth to pass through. Two sets of rotating roller frames are symmetrically mounted inside the mounting frame via a rotation axis. Multiple guide sleeve plates are fixedly installed circumferentially on the outer wall of the rotating roller frames. A sliding plate is slidably connected to the guide sleeve plate. A spring piece is provided between the rotating roller frame and the sliding plate, located inside the guide sleeve plate. The sliding plate slides against the inner wall of the mounting frame under the action of the spring piece. A driving component for driving the two sets of rotating roller frames is provided on the outer wall of the mounting frame.

[0009] As an improvement to the above solution, the driving component includes a second motor fixedly mounted on the outer wall of the mounting frame. The second motor is connected to the rotating shaft of one of the sets of rotating roller frames via a coupling. A gear one is fixedly connected to the rotating shaft connected to the coupling, and a gear two is rotatably connected to the outer wall of the mounting frame. The gear one and gear two mesh with each other, and the rotating shaft of the gear two is connected to the rotating shaft of the other set of rotating roller frames via a set of synchronous pulleys.

[0010] As an improvement to the above solution, the surface of the sliding plate is covered with a sealing gasket, and sealing strips are provided on the guide sleeve plate and the side wall of the sliding plate, and the sealing strips are tightly fitted to the inner wall of the mounting frame.

[0011] As an improvement to the above solution, a pulley is fixedly installed on the mounting tube on one side of the cylindrical roller frame, and a drive belt is wound between the pulleys on the same side. Two first motors are fixedly installed on the upper and lower parts of the outer wall of the dewaxing box, and the output shaft of the first motor is connected to the corresponding pulley on the same side through the drive belt.

[0012] As an improvement to the above solution, a wax extraction mechanism is provided on the spreading plate of the spreading roller. This mechanism is used to extract wax during the dewaxing process of the glass fiber cloth. The wax extraction mechanism includes a collection chamber fixedly installed on one side of the spreading plate. The top of the collection chamber is open. Multiple guide rods are fixedly connected to the bottom of the collection chamber. A scraper is slidably connected inside the collection chamber. The scraper has a through hole at its bottom that matches the guide rod, and the diameter of this through hole is larger than the outer diameter of the guide rod. The end of the guide rod is provided with a limiting device. The scraper has a plug, and a spring is fitted on the guide rod between the collection chamber and the scraper. The scraper is higher than the expansion plate under the action of the spring. A drainage pipe is fixedly connected to one side of the expansion plate. The liquid inlet of the drainage pipe is connected to the collection chamber through multiple pipe ports. The liquid outlet of the drainage pipe is connected to the mounting pipe on the side of the cylindrical roller frame away from the hot air pipe. A suction pipe is fixedly installed on the outer wall of the dewaxing box away from the hot air pipe. The suction pipe is used to connect to an external suction pump. The suction pipe rotates sequentially to connect to the mounting pipe on the side of the cylindrical roller frame away from the hot air pipe.

[0013] As an improvement to the above solution, an observation window is sealed and fixedly installed on the side wall of the dewaxing chamber. The observation window is used to observe the state changes of the glass fiber cloth in the dewaxing chamber during the high-temperature dewaxing process in real time. Beneficial effects

[0014] 1. This invention utilizes an alternating "S"-shaped spreading roller in conjunction with an internal piston-spreading plate structure to automatically expand and tighten the fabric surface under the drive of hot air pressure. Combined with the dense nozzles of the spreading plate and the three-dimensional hot air penetration system formed by the side air inlet pipe of the dewaxing box, hot air is uniformly penetrated into the glass fiber cloth from the inside out and from the surface to the core, thereby improving the dewaxing speed and thoroughness.

[0015] 2. This invention can maintain a stable high-temperature environment inside the dewaxing box during the continuous feeding and feeding of fiberglass cloth by setting a sealing mechanism at the inlet and outlet, and the sliding plate flexibly clamps and seals the cloth as it passes through. The sealing gasket and sealing strip form multiple thermal barriers, thereby reducing heat loss and improving energy utilization efficiency.

[0016] 3. The present invention uses a wax extraction mechanism to simultaneously trigger the scraper to move down and open the flow channel during the opening action. The molten wax is immediately drawn away by negative pressure, which prevents the fabric surface from being contaminated, the roller surface from sticking, or the pipe from being blocked due to wax dripping, accumulating, or cooling and solidifying, thus ensuring continuous and stable process. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a diagram showing the positional relationship of components such as the dewaxing box, hot air duct, and sealing mechanism of the present invention.

[0019] Figure 3 This diagram shows the connection relationships of components such as the roller frame, hot air pipe, branch pipe, and air inlet pipe of the present invention.

[0020] Figure 4 This is a schematic diagram of the specific components of the roller frame of the present invention.

[0021] Figure 5 This diagram shows the connection relationship between the dewaxing box, pulley, drive belt, and first motor of the present invention.

[0022] Figure 6 This is a schematic diagram of the dewaxing box, mounting frame, second motor, and coupling of the present invention.

[0023] Figure 7 This is a schematic diagram showing the working relationship between the roller frame, gear one, gear two, and synchronous wheel set of the present invention.

[0024] Figure 8 This is a schematic diagram showing the cooperation relationship between the roller frame, rotating shaft, guide sleeve plate and sliding plate of the present invention.

[0025] Figure 9 This is a schematic diagram of the specific components of the sealing mechanism of the present invention.

[0026] Figure 10 This diagram shows the connection relationships of the components of the present invention, including the dewaxing box, cylindrical roller frame, and wax extraction mechanism.

[0027] Figure 11 This is a schematic diagram of the specific components of the wax extraction mechanism of the present invention.

[0028] In the attached diagram, the following labels are used: 100: fiberglass cloth; 1: base frame; 2: dewaxing box; 21: guide roller; 22: fiberglass collection hood; 23: discharge pipe; 3: electric traction roller; 4: spreading roller; 41: cylindrical roller frame; 42: mounting pipe; 43: spreading plate; 44: piston cylinder; 45: piston plate; 46: connecting pipe; 47: hose; 5: hot air pipe; 6: branch pipe; 61: air inlet pipe; 71: pulley; 72: drive belt; 73: first motor; 8: sealing mechanism. 81: Mounting frame, 82: Roller frame, 821: Rotating shaft, 83: Guide sleeve plate, 84: Sliding plate, 85: Spring piece, 9: Driving component, 91: Second motor, 92: Coupling, 93: Gear one, 94: Gear two, 95: Synchronous pulley set, 10: Sealing gasket, 101: Sealing strip, 11: Wax extraction mechanism, 111: Collection chamber, 112: Guide rod, 113: Scraper, 114: Spring, 115: Drainage tube, 12: Suction tube, 13: Observation window. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] A dewaxing device for processing fiberglass cloth, such as Figures 1-4As shown, the device includes a base frame 1 and a dewaxing chamber 2. The base frame 1 forms the load-bearing structure of the dewaxing device, and the dewaxing chamber 2 is fixedly installed on the base frame 1. The dewaxing chamber 2 is used to dry and dewax the fiberglass cloth 100. Electric traction rollers 3 for conveying the fiberglass cloth 100 are installed at both the upper and lower ends of the dewaxing chamber 2. Guide rollers 21 for guiding the fiberglass cloth 100 are rotatably installed in pairs on the upper and lower parts of the inner wall of the dewaxing chamber 2. It also includes multiple spreading rollers 4 rotatably installed on the inner wall of the dewaxing chamber 2. The spreading rollers 4 are arranged in an alternating "S" shape and are used to roll and spread the fiberglass cloth 100. A hot air pipe 5 is assembled on the outer wall of the dewaxing chamber 2, and the hot air pipe 5 is connected to each spreading roller 4 in sequence. The hot air pipe 5 is used to connect to external hot air generating equipment. Multiple air inlet pipes 61 are installed at intervals on the inner walls of both sides of the expansion roller 4. Each air inlet pipe 61 has an air inlet facing the expansion roller 4. The hot air pipe 5 is connected to the corresponding air inlet pipe 61 through branch pipes 6 on both sides. The expansion roller 4 includes a cylindrical roller frame 41 rotatably connected to the inner wall of the dewaxing box 2. Both ends of the cylindrical roller frame 41 are fixedly connected to mounting pipes 42. One end of the mounting pipe 42 is connected to the hot air pipe 5. Multiple expansion plates 43 are slidably connected to the cylindrical roller frame 41 at intervals around the circumference. The expansion plates 43 are hollow plates with multiple nozzles densely distributed on them. Piston cylinders 44 corresponding to the expansion plates 43 are installed at intervals around the inner circumference of the cylindrical roller frame 41. Piston plates 45 are slidably connected inside the piston cylinders 44. The piston plates 45 are connected to the cylinders 44 through multiple connecting pipes 46. At the nozzle of the corresponding expansion plate 43, the mounting pipe 42 connected to the hot air pipe 5 is connected to each piston cylinder 44 via a flexible hose 47. After the fiberglass cloth 100 is introduced into the dewaxing box 2 from the lower electric traction roller 3, the fiberglass cloth 100 will alternately pass around multiple expansion rollers 4 and then be discharged from the upper electric traction roller 3. When dewaxing the fiberglass cloth 100, high-pressure hot air is introduced into the dewaxing box 2 through the hot air pipe 5. At the same time, the branch pipe 6 sprays hot air from both sides of the inner wall of the dewaxing box 2 to the fiberglass cloth 100 in the middle through the air inlet pipe 61. The hot air entering through the hot air pipe 5 enters the mounting pipe 42 at one end of the cylindrical roller frame 41. The hot air flows through the mounting pipe 42 to multiple flexible hoses 47 and then enters the corresponding piston cylinder 44. Hot air flows into the expansion plate 43 through the connecting pipe 46 on the piston plate 45, and is sprayed onto the glass fiber cloth 100 from the densely distributed nozzles on the expansion plate 43. Due to the narrow nozzle channel, the hot air forms pressure in the piston cylinder 44, pushing the piston plate 45 to move outward, and then driving the expansion plate 43 to expand outward through the connecting pipe 46. This allows the multiple expansion plates 43 on the cylindrical roller frame 41 to expand the glass fiber cloth 100 outward, thereby opening and expanding the pores on the surface of the glass fiber cloth 100. Combined with the hot air coverage from the densely distributed nozzles on the expansion plate 43, high temperature can quickly penetrate to the deep layers of the glass fiber cloth 100, achieving uniform and efficient dewaxing. The inner walls of the upper and lower ends of the dewaxing box 2 are equipped with sealing mechanisms 8 to separate the inside and outside of the dewaxing box 2.

[0031] like Figure 5As shown, a pulley 71 is fixedly installed on the mounting tube 42 on one side of the cylindrical roller frame 41, and a drive belt 72 is wound between the pulleys 71 on the same side. Two first motors 73 are fixedly installed on the upper and lower parts of the outer wall of the dewaxing box 2. The output shaft of the first motor 73 is connected to the corresponding pulley 71 on the same side through the drive belt 72. The two first motors 73 drive the corresponding pulleys 71 in opposite directions in a synchronous manner, so that the staggered spreading rollers 4 can work together to spread and transport the glass fiber cloth 100.

[0032] When dewaxing the fiberglass cloth 100 using this device, the fiberglass cloth 100 to be processed is smoothly guided into the dewaxing box 2 by the electric traction roller 3 at the bottom of the dewaxing box 2. Then, following a preset path, it sequentially travels between multiple spreading rollers 4 arranged in an "S" shape inside the dewaxing box 2, and is finally discharged by the electric traction roller 3 at the top, forming a continuous and stable conveying trajectory. During the upward conveying of the fiberglass cloth 100, the external hot air generating equipment continuously delivers high-temperature airflow into the spreading rollers 4 through the hot air pipe 5. Hot air first enters the mounting pipe 42 at one end of the spreading roller 4, and then is diverted via the flexible hose 47 to multiple piston cylinders 44 distributed circumferentially inside the cylindrical roller frame 41. Due to the small size of the densely arranged nozzle channels on the spreading plate 43, the hot air is obstructed during passage, forming local high pressure, which generates a continuous thrust on the piston plate 45 inside the piston cylinder 44, pushing the piston plate 45 to slide outward along the cylinder. The displacement of the piston plate 45 is transmitted to the corresponding spreading plate 43 through the rigid connecting pipe 46, causing multiple spreading plates 43 to expand outward synchronously. Uniform tension is applied to both sides of the fabric surface, stretching the fiberglass cloth 100 laterally and appropriately expanding its interwoven structure, thus widening the originally tightly packed fiber gaps. Simultaneously, hot air, under pressure, is ejected at high speed from the densely arranged nozzles on the surface of the expansion plate 43, directly penetrating the expanded fabric fiber layer to achieve deep heat penetration from the inside out. This, combined with the air inlet pipes 61 connected to the hot air pipes 5 on both sides of the inner wall of the dewaxing chamber 2, with multiple air inlet pipes 61 nozzles facing the fabric surface, supplements the hot air injection from the lateral direction, interacting with the hot air ejected from the expansion plate 43. The longitudinal hot air together constructs a three-dimensional heat flow field, ensuring that the heat energy evenly covers every area of ​​the fabric surface. Under the continuous action of the hot air, the waxy impregnating agent remaining on the surface of the glass fiber cloth 100 and in the fiber gaps is rapidly heated and liquefied. During this process, the spreading roller 4, driven by the first motor 73, achieves synchronous rotation through the pulley 71 and the drive belt 72 system. This not only assists in the smooth transport of the fabric, but also allows the fabric surface to continuously change the heated position during the journey, avoiding local overheating or underheating, thereby achieving an efficient and uniform dewaxing effect.

[0033] like Figures 6-9As shown, the sealing mechanism 8 includes a mounting frame 81 fixedly installed on the upper and lower inner walls of the dewaxing box 2. A guide opening for the fiberglass cloth 100 to pass through is provided in the middle of the mounting frame 81. Two sets of rotating roller frames 82 are symmetrically mounted inside the mounting frame 81 via a rotating shaft 821. Multiple guide sleeves 83 are fixedly installed circumferentially on the outer wall of the rotating roller frames 82. Sliding plates 84 are slidably connected to the guide sleeves 83. Spring pieces 85 are provided between the rotating roller frames 82 and the sliding plates 84, located within the guide sleeves 83. The sliding plates 84 slide against the inner wall of the mounting frame 81 under the action of the spring pieces 85. The outer wall of the mounting frame 81 is provided with a mechanism for driving the two sets of rotating roller frames 82. The drive unit 9 of the roller frame 82 guides the glass fiber cloth 100 into the dewaxing box 2 through the two sets of roller frames 82. The drive unit 9 drives the two sets of roller frames 82 to rotate in opposite directions at the same speed. The corresponding sliding plates 84 on the two sets of roller frames 82 press together on the glass fiber cloth 100. The mutually pressing sliding plates 84 retract the compression spring 85 into the guide sleeve plate 83, so that the glass fiber cloth 100 entering and exiting the dewaxing box 2 is clamped and sealed by the sliding plates 84 when passing through the sealing mechanism 8. Thus, while the glass fiber cloth 100 is continuously feeding and discharging, dynamic isolation and sealing operation is achieved, ensuring the production continuity of dewaxing of the glass fiber cloth 100.

[0034] like Figure 2 , Figure 6 and Figure 7 As shown, the driving component 9 includes a second motor 91 fixedly mounted on the outer wall of the mounting frame 81. The second motor 91 is connected to the rotating shaft 821 of one set of roller frames 82 via a coupling 92. A gear 93 is fixedly connected to the rotating shaft 821 connected to the coupling 92. A gear 94 is rotatably connected to the outer wall of the mounting frame 81. Gear 93 and gear 94 mesh with each other. The rotating shaft of gear 94 is connected to the rotating shaft 821 of the other set of roller frames 82 via a synchronous pulley set 95. The second motor 91 drives one set of roller frames 82 to rotate via the coupling 92. At the same time, gear 93 and gear 94 mesh with each other and drive the other set of roller frames 82 to rotate synchronously in opposite directions via the synchronous pulley set 95, so that the sliding plates 84 on the two sets of roller frames 82 can dynamically clamp and seal the transmitted glass fiber cloth 100.

[0035] like Figure 7 and Figure 8 As shown, the surface of the sliding plate 84 is covered with a sealing gasket 10, and a sealing strip 101 is provided on the side wall of the guide sleeve plate 83 and the sliding plate 84. The sealing strip 101 is tightly fitted to the inner wall of the mounting frame 81, so that when the sliding plates 84 on the two sets of roller frames 82 clamp the glass fiber cloth 100 with each other, the sealing gasket 10 on the sliding plate 84 can be tightly fitted, and the sealing strip 101 seals the mounting frame 81, thereby reducing the heat loss to the outside during the dewaxing of the glass fiber cloth 100 in the dewaxing box 2.

[0036] To ensure the dewaxing process operates stably in a sealed and energy-efficient environment, sealing mechanisms 8 are installed at both the upper and lower inlet and outlet of the dewaxing box 2. When the fiberglass cloth 100 passes through the guide opening in the middle of the sealing mechanism 8, the two sets of rotating roller frames 82 inside the mounting frame 81, driven by the external second motor 91, achieve constant speed and reverse rotation through gear 1 93 meshing with gear 2 94 and synchronous wheel set 95. The sliding plates 84 distributed circumferentially on the outer side of the rotating roller frame 82, under the elastic force of the spring plate 85, always adhere to the inner wall of the mounting frame 81; when the fiberglass cloth 100 passes through... At the same time, the two sets of sliding plates 84 rotating relative to each other apply flexible clamping force from both sides of the cloth surface, so that the glass fiber cloth 100 is continuously clamped during the transmission. At this time, the sealing gaskets 10 covering the surface of the sliding plates 84 press against each other during the clamping process. Together with the guide sleeve plate 83 and the sealing strip 101 set on the side wall of the sliding plate 84, they form a sealing effect with the inner wall of the mounting frame 81, effectively preventing the high temperature hot air in the dewaxing box 2 from leaking outward, while preventing the external cold air from intruding and interfering with the dewaxing hot field, improving the heat energy utilization efficiency in the dewaxing box 2 and maintaining the stability of the process environment inside the box.

[0037] like Figure 2 and Figure 3 As shown, fiberglass collection covers 22 are fixedly installed on the upper and lower parts of the inner wall of the dewaxing box 2 near the guide roller 21. The fiberglass collection cover 22 has an opening in the middle for the fiberglass cloth 100 to pass through. The fiberglass collection cover 22 is used to collect the fiberglass fuzz or debris generated during the heating and dewaxing process of the fiberglass cloth 100. The fiberglass collection cover 22 is connected to a discharge pipe 23, which is used to connect to an external suction pump. By using the discharge pipe 23 of the external suction pump, the fiberglass fuzz or debris collected by the fiberglass collection cover 22 can be safely discharged and processed.

[0038] like Figure 10 and Figure 11As shown, a wax extraction mechanism 11 is provided on the expansion plate 43 of the expansion roller 4. The wax extraction mechanism 11 is used to extract the wax during the dewaxing process of the glass fiber cloth 100. The wax extraction mechanism 11 includes a collection chamber 111 fixedly installed on one side of the expansion plate 43. The top of the collection chamber 111 is open. Multiple guide rods 112 are fixedly connected to the bottom of the collection chamber 111. A scraper 113 is slidably connected inside the collection chamber 111. The bottom of the scraper 113 has an opening. A through hole adapted to the guide rod 112 has a diameter larger than the outer diameter of the guide rod 112. The end of the guide rod 112 is provided with a plug for limiting the scraper 113. A spring 114 is sleeved on the guide rod 112 between the collection chamber 111 and the scraper 113. Under the action of the spring 114, the scraper 113 is higher than the supporting plate 43. A drainage pipe 115 is fixedly connected to one side of the supporting plate 43. The inlet end of the drainage pipe 115 is connected to the collection chamber 111 through multiple ports. The liquid outlet is connected to the mounting pipe 42 on the side of the cylindrical roller frame 41 away from the hot air pipe 5. A suction pipe 12 is fixedly installed on the outer wall of the dewaxing box 2 away from the hot air pipe 5. The suction pipe 12 is used to connect to an external suction pump. The suction pipe 12 is rotated to connect to the mounting pipe 42 on the side of the cylindrical roller frame 41 away from the hot air pipe 5. After connecting the suction pipe 12 to the external suction pump, the suction pump is started to generate negative pressure in the suction pipe 12, the mounting pipe 42 and the drainage pipe 115. Under the high pressure of the hot air, the expansion plate 43 is opened. When the fiberglass cloth 100 is spread outwards, the scraper 113 will be compressed by the fiberglass cloth 100, causing the scraper 113 to retract the spring 114 in the collection chamber 111. The opening of the scraper 113 will no longer be blocked by the plug at the end of the guide rod 112. At this time, the scraper 113 can guide the wax liquid flowing from the fiberglass cloth 100. The wax liquid flows into the collection chamber 111 through the through hole of the scraper 113 and is finally discharged by the suction pipe 12, preventing the wax liquid from cooling and accumulating and affecting the process.

[0039] like Figure 1 As shown, an observation window 13 is sealed and fixedly installed on the side wall of the dewaxing chamber 2. The observation window 13 is used to observe the state changes of the glass fiber cloth 100 in the dewaxing chamber 2 in real time during the high-temperature dewaxing process. This helps to provide early warning of faults such as blockage and jamming of the glass fiber cloth 100, and provides a direct basis for the control of dewaxing process parameters.

[0040] During the high-temperature dewaxing of the fiberglass cloth 100, due to thermal disturbance and fiber structure relaxation, some fiber fuzz or tiny fragments may detach from the cloth surface and suspend in the air. To address this, a fiberglass collection hood 22 is installed in the upper and lower areas near the guide roller 21 inside the dewaxing chamber 2. The opening of the fiberglass collection hood 22 allows the fiberglass cloth 100 to pass freely, while the hood structure effectively intercepts the scattered fiber fragments. The fiberglass collection hood 22 is connected to an external suction pump via a discharge pipe 23, continuously drawing in and removing the suspended matter from the dewaxing chamber 2 under negative pressure for centralized processing. This prevents fiber dust from accumulating inside the equipment, causing blockages, pollution, or posing a threat to the health of operators. Furthermore, for liquid wax that may flow or drip along the cloth surface after melting due to heat, a wax extraction mechanism 11 is integrated on the expansion plate 43. 3. When the hot air pressure expands outward and adheres tightly to the fiberglass cloth 100, the scraper 113 is compressed by the reaction force of the cloth surface, causing the spring 114 to move downward. This causes the bottom through hole of the scraper 113 to disengage from the limit of the end plug of the guide rod 112, thereby opening the drainage channel. The molten wax is collected along the surface of the scraper 113 under the action of gravity and cloth surface tension, flows into the collection chamber 111 through the through hole, and then is introduced into the installation pipe 42 at the other end of the spreading roller 4 through the drainage pipe 115. Finally, it is extracted by the external suction pump through the suction pipe 12 under negative pressure, realizing the immediate collection and discharge of the wax. The observation window 13 on the side wall of the dewaxing box 2 provides the operator with a full-process visual monitoring window, which makes it easy to grasp the cloth surface tension, hot air distribution, wax flow and equipment operating status in real time, and promptly detect and deal with potential abnormalities to ensure the safe, continuous and efficient operation of the dewaxing operation.

Claims

1. A dewaxing device for processing glass fiber cloth, comprising a dewaxing box (2) fixedly installed on a base frame (1), wherein electric traction rollers (3) are provided at both the upper and lower ends of the dewaxing box (2), and guide rollers (21) are rotatably installed in pairs on the upper and lower parts of the inner wall of the dewaxing box (2). Its characteristics are, It also includes multiple rotatable spreading rollers (4) mounted on the inner wall of the dewaxing box (2), the dewaxing box (2) is equipped with a hot air pipe (5), the hot air pipe (5) is connected to each spreading roller (4), and air inlet pipes (61) are installed at intervals on the inner walls on both sides of the dewaxing box (2). The air inlet pipes (61) have air inlets facing the spreading rollers (4), and the hot air pipes (5) are connected to the air inlet pipes (61) through branch pipes (6). The spreading roller (4) includes a cylindrical roller frame (41) rotatably connected to the dewaxing box (2). Both ends of the cylindrical roller frame (41) are fixedly connected to mounting pipes (42). One end of the mounting pipe (42) is rotatably connected to the hot air pipe (5). The cylindrical roller frame (41) is circumferentially slidably connected to multiple spreading plates (43). The spreading plates (43) are hollow plates with densely distributed nozzles on their surfaces. Piston cylinders (44) are circumferentially slidably installed inside the cylindrical roller frame (41). Piston plates (45) are slidably connected inside the piston cylinders (44). The piston plates (45) are connected to the spreading plates (43) through multiple connecting pipes (46). The mounting pipe (42) connected to the hot air pipe (5) is connected to each piston cylinder (44) through a flexible hose (47). The dewaxing box (2) is equipped with sealing mechanisms (8) on the inner walls of both the upper and lower ports.

2. The dewaxing device for processing glass fiber cloth as described in claim 1, characterized in that, The upper and lower parts of the inner wall of the dewaxing box (2) are fixedly installed with fiberglass collection covers (22) near the guide roller (21). The fiberglass collection cover (22) has an opening in the middle for the fiberglass cloth (100) to pass through. The fiberglass collection cover (22) is connected to a discharge pipe (23).

3. The dewaxing device for processing glass fiber cloth as described in claim 2, characterized in that, The sealing mechanism (8) includes a mounting frame (81) fixedly installed on the upper and lower inner walls of the dewaxing box (2). The mounting frame (81) has a guide opening on the middle frame for the glass fiber cloth (100) to pass through. Two sets of roller frames (82) are symmetrically mounted inside the mounting frame (81) via a rotating shaft (821). Multiple guide sleeves (83) are fixedly installed circumferentially on the outer wall of the roller frame (82). A sliding plate (84) is slidably connected to the guide sleeve (83). A spring piece (85) located in the guide sleeve (83) is provided between the roller frame (82) and the sliding plate (84). The sliding plate (84) slides against the inner wall of the mounting frame (81) under the action of the spring piece (85). A driving component (9) for driving the two sets of roller frames (82) is provided on the outer wall of the mounting frame (81).

4. The dewaxing device for processing glass fiber cloth as described in claim 3, characterized in that, The drive unit (9) includes a second motor (91) fixedly installed on the outer wall of the mounting frame (81). The second motor (91) is connected to the rotating shaft (821) of one of the roller frames (82) via a coupling (92). A gear one (93) is fixedly connected to the rotating shaft (821) connected to the coupling (92). A gear two (94) is rotatably connected to the outer wall of the mounting frame (81). The gear one (93) and the gear two (94) mesh with each other. The rotating shaft of the gear two (94) is connected to the rotating shaft (821) of the other roller frame (82) via a synchronous pulley set (95).

5. The dewaxing device for processing glass fiber cloth as described in claim 4, characterized in that, The surface of the sliding plate (84) is covered with a sealing gasket (10), and a sealing strip (101) is provided on the side wall of the guide sleeve plate (83) and the sliding plate (84). The sealing strip (101) is tightly fitted to the inner wall of the mounting frame (81).

6. The dewaxing device for processing glass fiber cloth as described in claim 5, characterized in that, A pulley (71) is fixedly installed on the mounting tube (42) on one side of the cylindrical roller frame (41), and a drive belt (72) is wound between the pulleys (71) on the same side. Two first motors (73) are fixedly installed on the upper and lower parts of the outer wall of the dewaxing box (2). The output shaft of the first motor (73) is connected to the corresponding pulley (71) on the same side through the drive belt (72).

7. The dewaxing device for processing glass fiber cloth as described in claim 6, characterized in that, The spreading plate (43) of the spreading roller (4) is provided with a wax extraction mechanism (11). The wax extraction mechanism (11) is used to extract the wax liquid during the dewaxing process of the glass fiber cloth (100). The wax extraction mechanism (11) includes a collection chamber (111) fixedly installed on one side of the spreading plate (43). The top of the collection chamber (111) is open. Multiple guide rods (112) are fixedly connected to the bottom of the collection chamber (111). A scraper (113) is slidably connected to the collection chamber (111). The bottom of the scraper (113) is provided with a through hole adapted to the guide rod (112). The diameter of the through hole is larger than the outer diameter of the guide rod (112). The end of the guide rod (112) is provided with a limiting scraper. The plug of (113), the guide rod (112) between the collection chamber (111) and the scraper (113) is fitted with a spring (114), the side of the expansion plate (43) is fixedly connected to a drainage pipe (115), the liquid inlet end of the drainage pipe (115) is connected to the collection chamber (111) through multiple pipe ports, the liquid outlet end of the drainage pipe (115) is connected to the mounting pipe (42) on the side of the cylindrical roller frame (41) away from the hot air pipe (5), the outer wall of the dewaxing box (2) away from the hot air pipe (5) is fixedly installed with a suction pipe (12), the suction pipe (12) is used to connect to an external suction pump, the suction pipe (12) rotates sequentially to connect to the mounting pipe (42) on the side of the cylindrical roller frame (41) away from the hot air pipe (5).

8. The dewaxing device for processing glass fiber cloth as described in claim 7, characterized in that, An observation window (13) is sealed and fixedly installed on the side wall of the dewaxing box (2).

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