Automatic welding device for carbon fiber demolding cloth

Abstract

The invention relates to the technical field of carbon fiber demolding cloth production, and discloses a carbon fiber demolding cloth automatic welding device which comprises a welding table, an ultrasonic welding assembly and a flexible clamping assembly, the ultrasonic welding assembly and the flexible clamping assembly are installed on the welding table, and the ultrasonic welding assembly comprises a lifting seat and an ultrasonic welding tool bit connected with the lifting seat; the two sets of flexible clamping assemblies are symmetrically distributed on the two sides of the ultrasonic welding tool bit, each flexible clamping assembly comprises an overturning base and an overturning frame installed on the overturning base, a clamping plate is installed on each overturning frame, a plurality of bags are embedded in the bottom end of each clamping plate at equal intervals, and each bag is filled with hydraulic oil containing magnetic particles. And electromagnetic coils corresponding to the bag bodies are embedded at the bottom end of the clamping plate. By finely adjusting the magnetic field intensity of the electromagnetic coil, the hardness of the bottom end of the bag body is dynamically adjusted, uniform distribution of clamping force is ensured, flexible contact and stable fixation are both considered, and the problems of fiber breakage and cloth damage caused by traditional rigid clamping are solved.

Description

Technical Field

[0001] The invention relates to the technical field of carbon fiber release cloth production, in particular to an automatic welding device for carbon fiber release cloth. Background Art

[0002] Carbon fiber release cloth, with its high strength, low ductility, high-temperature resistance, and anti-stick coating, is widely used in vacuum forming and hot pressing processes. On release cloth production lines, when a roll of material is exhausted, a new roll must be joined to the old one to maintain continuous production. Traditional joining methods, often involving manual bonding or mechanical sewing, suffer from low efficiency and unstable joint strength.

[0003] Currently, there are devices on the market that use ultrasonic welding to quickly connect rolls of material. This uses high-frequency vibrations to partially melt the material, forming a molecular-level bond. It is suitable for connecting materials such as non-woven fabrics and plastic films. However, existing ultrasonic welding equipment typically uses rigid clamping or pneumatic clamping mechanisms to secure the rolls. Given the low ductility of carbon fiber release cloth, excessive clamping force or uneven clamping due to an uneven surface can easily lead to fiber breakage and fabric damage. Summary of the Invention

[0004] To achieve the above-mentioned objectives, the present invention discloses an automatic welding device for carbon fiber release cloth, comprising: a welding table and an ultrasonic welding assembly and a flexible clamping assembly installed on the welding table, the ultrasonic welding assembly comprising a lifting seat and an ultrasonic welding cutter head connected to the lifting seat, two groups of flexible clamping assemblies are symmetrically distributed on both sides of the ultrasonic welding cutter head, the flexible clamping assembly comprises a flip seat and a flip frame installed on the flip seat, a clamping plate is installed on the flip frame, a plurality of capsules are embedded at equal intervals at the bottom end of the clamping plate, the capsules are filled with hydraulic oil containing magnetic particles, and an electromagnetic coil is embedded at the bottom end of the clamping plate corresponding to each capsule.

[0005] Preferably, the electromagnetic coil is a flat coil.

[0006] Preferably, the lifting chamber is located in the lifting seat, the lifting motor is installed at the top of the lifting chamber, the lifting screw is installed at the output end of the lifting motor, the lifting screw block is sleeved on the lifting screw, the side lifting groove is opened at the side end of the lifting seat and is connected to the lifting chamber, the end of the lifting plate extends into the lifting chamber from the side lifting groove and is connected to the lifting screw block, and the ultrasonic welding head is installed at the bottom end of the lifting plate.

[0007] Preferably, the clamping plate is a hollow structure, a fixed horizontal plate is installed in the clamping plate, and a number of limiting shells equal to the number of the sac body are installed at the bottom end of the fixed horizontal plate. The top and bottom ends of the limiting shells are both open, the sac body is located in the limiting shell, the bottom end of the limiting shell is connected to the bottom end of the clamping plate, the bottom end of the sac body is exposed from the limiting shell, the electromagnetic coil is embedded in the inner wall of the limiting shell near the bottom end, and the side end of the sac body is thickened near the bottom end and covered with a heat insulation film.

[0008] Preferably, the bladder is attached to the bottom end of the fixed transverse plate, and a pressure sensor is installed on the fixed transverse plate to monitor the pressure between the bladder and the fixed transverse plate.

[0009] Preferably, a low-temperature heating rod is installed at the bottom end of the fixed horizontal plate, and the heating section of the low-temperature heating rod extends into the capsule to heat the hydraulic oil in the capsule.

[0010] Preferably, a temperature sensor is mounted on the fixed transverse plate to monitor the temperature of the hydraulic oil in the bladder.

[0011] Preferably, an equal number of micro pumps to those provided on the bladder are installed on the top of the fixed horizontal plate, the micro pumps are connected between the bladder and the liquid storage tube, the liquid storage tube is arranged between the top of the fixed horizontal plate and the top inside the clamping plate, the micro air cooling device is installed on the top inside the clamping plate, the through hole is opened on the fixed horizontal plate, the air outlet is opened at the bottom end of the clamping plate, and is arranged close to the electromagnetic coil.

[0012] Preferably, a rotating cylinder is installed on the turning seat, and the turning frame is installed at the output end of the rotating cylinder.

[0013] Preferably, an auxiliary clamping seat is installed on the welding table away from the turning seat, the clamping sensor is installed on the auxiliary clamping seat, and the turning frame is arranged on the clamping sensor away from the turning seat.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: 1. The present invention provides an automatic welding device for carbon fiber release cloth. The capsule flexibly contacts the surface of the carbon fiber release cloth to adapt to surface unevenness. By fine-tuning the magnetic field strength of the electromagnetic coil, the hardness of the bottom end of the capsule is dynamically adjusted to ensure uniform distribution of clamping force, taking into account both flexible contact and stable fixation, thus avoiding the fiber breakage and cloth damage problems of traditional rigid clamping. In addition, multiple capsules are pressed on the material roll along the width direction of the material roll, which can achieve local hardness control to solve the problem of unstable clamping caused by uneven surface of wide material rolls. Because the capsule is filled with hydraulic oil containing magnetic particles, it maintains a soft, relaxed, low-hardness state to provide soft contact. Then the electromagnetic coil works to generate a magnetic field perpendicular to the bottom end of the capsule. The magnetic particles in the hydraulic oil form a chain structure under the action of the magnetic field, thereby hardening the bottom end of the capsule to ensure uniform distribution of clamping force, firmly fix the material roll, and prevent displacement during welding.

[0015] 2. This invention provides an automatic welding device for carbon fiber release sheet. A low-temperature heating rod heats the hydraulic oil within the bladder. The hydraulic oil's thermal expansion increases the internal pressure of the bladder. This thermal expansion provides a flexible clamping force increment, further enhancing the clamping force. The hardness of the bladder's bottom end can be fine-tuned to accommodate surface irregularities of the carbon fiber release sheet. A temperature sensor monitors the hydraulic oil temperature in real time to prevent overheating. The low-temperature heating rod and electromagnetic coil work together to dynamically control the hardness of the bladder's bottom end and the clamping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 The main view of the present invention Figure 1 (Flexible clamping assembly in clamped state); Figure 2 A top view of the present invention; Figure 3 The main view of the present invention Figure 2 (Flexible clamping assembly is in the lifted state); Figure 4 This is a schematic diagram of the lifting seat structure of the present invention; Figure 5 It is a schematic diagram of the clamping plate structure of the present invention; Figure 6 This is a cross-sectional view of the capsule of the present invention within the limiting shell.

[0018] In the figure: 10. Welding table; 11. Ultrasonic welding assembly; 12. Flexible clamping assembly; 13. Lifting seat; 14. Ultrasonic welding blade; 15. Turning seat; 16. Turning frame; 17. Clamping plate; 18. Capsule; 19. Electromagnetic coil; 20. Lifting chamber; 21. Lifting motor; 22. Lifting screw; 23. Lifting screw block; 24. Side lifting slot; 25. Lifting plate; 26. Fixed horizontal plate; 27. Limiting shell; 28. Pressure sensor; 29. ​​Low-temperature heating rod; 30. Temperature sensor; 31. Micro pump; 32. Liquid storage tube; 33. Micro air cooling device; 34. Through hole; 35. Air outlet; 36. Clamping sensor. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1 to 3 , this embodiment provides an automatic welding device for carbon fiber stripping cloth, including: a welding table 10 and an ultrasonic welding assembly 11 and a flexible clamping assembly 12 installed on the welding table 10, the ultrasonic welding assembly 11 includes a lifting seat 13 and an ultrasonic welding cutter head 14 connected to the lifting seat 13, two groups of flexible clamping assemblies 12 are symmetrically distributed on both sides of the ultrasonic welding cutter head 14, the flexible clamping assembly 12 includes a flip seat 15 and a flip frame 16 installed on the flip seat 15, a clamping plate 17 is installed on the flip frame 16, a plurality of capsules 18 are embedded at equal intervals at the bottom end of the clamping plate 17, the capsules 18 are filled with hydraulic oil containing magnetic particles, and an electromagnetic coil 19 is embedded at the bottom end of the clamping plate 17 corresponding to each capsule 18.

[0021] In this embodiment, the electromagnetic coil 19 is a flat coil.

[0022] The working principle and beneficial effects of the above technical solution are: The present invention discloses an automatic welding device for carbon fiber release cloth. After manually feeding a new and old roll onto a welding table 10, the overlapping portion of the new and old rolls is placed beneath an ultrasonic welding assembly 11. Two sets of flexible clamping assemblies 12 then operate, causing a turning frame 16 mounted on a turning seat 15 to flip, driving a clamping plate 17 mounted on the turning frame 16 to rotate toward the roll. Multiple capsules 18 remain in contact with the upper surface of the roll. Filled with hydraulic oil containing magnetic particles, the capsules 18 maintain a soft, relaxed, and low-hardness state, providing a soft contact. An electromagnetic coil 19 then operates, generating a magnetic field perpendicular to the bottom ends of the capsules 18. The magnetic particles in the hydraulic oil form a chain-like structure under the influence of the magnetic field, causing the bottom ends of the capsules 18 (i.e., the contact end between the capsules 18 and the roll) to harden, ensuring evenly distributed clamping force and firmly securing the roll to prevent displacement during welding. The present invention provides an automatic welding device for carbon fiber release cloth. A bladder 18 softly contacts the surface of the carbon fiber release cloth, adapting to surface irregularities. Fine-tuning the magnetic field strength of an electromagnetic coil 19 dynamically adjusts the hardness of the bottom end of the bladder 18, ensuring uniform distribution of clamping force while balancing flexible contact with stable fixation, thus avoiding the fiber breakage and fabric damage associated with traditional rigid clamping. Multiple bladders 18 press against the roll along its width, enabling localized hardness control and addressing the issue of unstable clamping caused by surface unevenness on wide rolls.

[0023] Example 2: Please refer to Figure 4 On the basis of the above-mentioned embodiment 1, the lifting chamber 20 is located in the lifting seat 13, the lifting motor 21 is installed at the top of the lifting chamber 20, the lifting screw 22 is installed at the output end of the lifting motor 21, the lifting screw block 23 is sleeved on the lifting screw 22, the side lifting groove 24 is opened at the side end of the lifting seat 13 and connected to the lifting chamber 20, the end of the lifting plate 25 extends from the side lifting groove 24 into the lifting chamber 20 and is connected to the lifting screw block 23, and the ultrasonic welding head 14 is installed at the bottom end of the lifting plate 25.

[0024] The working principle and beneficial effects of the above technical solution are: The lifting motor 21 located in the lifting chamber 20 works, thereby driving the lifting screw 22 installed on the output end of the lifting motor 21 to rotate, and the lifting screw block 23 mounted on the lifting screw 22 and the lifting plate 25 connected to the lifting screw block 23 perform lifting motion along the side lifting groove 24, thereby driving the ultrasonic welding head 14 installed at the bottom end of the lifting plate 25 to perform lifting motion to complete the welding of the overlapping parts of the new and old material rolls.

[0025] Example 3: Please refer to Figure 5 On the basis of the above-mentioned embodiment 1, the clamping plate 17 is a hollow structure, a fixed horizontal plate 26 is installed in the clamping plate 17, and a limiting shell 27 equal to the number of the capsule 18 is installed at the bottom end of the fixed horizontal plate 26. The top and bottom ends of the limiting shell 27 are both open. The capsule 18 is located in the limiting shell 27, and the bottom end of the limiting shell 27 is connected to the bottom end of the clamping plate 17. The bottom end of the capsule 18 is exposed from the limiting shell 27. The electromagnetic coil 19 is embedded in the inner wall of the limiting shell 27 near the bottom end. The side end of the capsule 18 is thickened near the bottom end and covered with a heat insulation film.

[0026] In this embodiment, the bladder 18 is abutted against the bottom end of the fixed transverse plate 26 , and the pressure sensor 28 is mounted on the fixed transverse plate 26 for monitoring the pressure between the bladder 18 and the fixed transverse plate 26 .

[0027] The working principle and beneficial effects of the above technical solution are: The capsule is made of high-strength silicone to ensure flexibility and sealing. The bottom of the clamping plate 17 is designed with four retaining shells 27 to accommodate the capsules 18. An electromagnetic coil 19 is embedded in the inner wall of each retaining shell 27, near the bottom. Each electromagnetic coil 19 in each retaining shell 27 can independently adjust the magnetic field strength. The capsule 18 is installed within the retaining shell 27, with its top resting against the fixed horizontal plate 26. A pressure sensor 28 monitors the pressure between the capsule 18 and the fixed horizontal plate 26 in real time. This pressure represents the clamping force of the capsule 18 on the web. When the clamping plate 17 rotates from vertical to horizontal, the magnetic particles in the hydraulic oil naturally settle near the bottom of the capsule 18. At this point, the bottom of the capsule 18 rests softly against the top surface of the web. The clamping force between the bladder 18 and the material roll is transmitted to a pressure sensor 28. This pressure sensor 28 within each stopper housing 27 monitors the clamping force and dynamically adjusts the magnetic field strength of the electromagnetic coil 19 to ensure even distribution of the clamping force, securely securing the material roll and preventing displacement during welding. Specifically, when the surface of the carbon fiber release sheet is uneven, the bottom of the bladder 18 adheres closely to the surface due to its fluidity. The magnetic field strength of the electromagnetic coil 19 is then fine-tuned to dynamically adjust the hardness of the bottom of the bladder 18. This avoids the fiber breakage and material damage associated with traditional rigid clamping.

[0028] Example 4: Please refer to Figure 6 On the basis of the above-mentioned embodiment 3, a low-temperature heating rod 29 is installed at the bottom end of the fixed horizontal plate 26, and the heating section of the low-temperature heating rod 29 extends into the capsule 18 to heat the hydraulic oil in the capsule 18.

[0029] In this embodiment, the temperature sensor 30 is mounted on the fixed transverse plate 26 to monitor the temperature of the hydraulic oil in the bladder 18 .

[0030] The working principle and beneficial effects of the above technical solution are: The low-temperature heater rod 29 heats the hydraulic oil (temperature ranges from 40-80°C) within the bladder 18. This heat-induced expansion of the hydraulic oil increases the internal pressure of the bladder 18. This thermal expansion provides a flexible clamping force increment, further enhancing the clamping force and fine-tuning the hardness of the bottom end of the bladder 18 to accommodate surface irregularities of the carbon fiber release sheet. A temperature sensor 30 monitors the hydraulic oil temperature in real time to prevent overheating. The low-temperature heater rod 29 and electromagnetic coil 19 work in tandem to dynamically control the hardness of the bottom end of the bladder 18 and the clamping force.

[0031] Example 5: On the basis of the above-mentioned embodiment 4, micro pumps 31 equal in number to the bladder 18 are installed at the top of the fixed horizontal plate 26, the micro pumps 31 are connected between the bladder 18 and the liquid storage tube 32, the liquid storage tube 32 is arranged between the top of the fixed horizontal plate 26 and the top of the clamping plate 17, the micro air cooling device 33 is installed at the top of the clamping plate 17, the through hole 34 is opened on the fixed horizontal plate 26, the air outlet 35 is opened at the bottom end of the clamping plate 17, and is arranged close to the electromagnetic coil 19.

[0032] The working principle and beneficial effects of the above technical solution are: After the ultrasonic welding tip 14 completes welding, the electromagnetic coil 19 and low-temperature heating rod 29 stop working, and the micro air cooling device 33 operates, sending air into the clamping plate 17. The air is discharged through the through hole 34 and the air outlet 35, thereby accelerating the cooling of the hydraulic oil and the electromagnetic coil 19. The micro pump 31 adjusts the hydraulic oil reserve in the bladder 18 through the liquid storage tube 32 to maintain the performance of the bladder 18. At the same time, the hydraulic oil in the bladder 18 can also be pumped into the liquid storage tube 32 by the micro pump 31, so that the micro air cooling device 33 can purge the surface of the liquid storage tube 32, thereby achieving rapid cooling of the hydraulic oil. The motor of the micro pump 31 can rotate forward and reverse to change the direction of the hydraulic oil flow.

[0033] Furthermore, when the electromagnetic coil 19 is overheated, the micro air cooling device 33 can also work to cool down the electromagnetic coil 19 in time.

[0034] Example 6: On the basis of the above embodiment 1, a rotating cylinder is installed on the turning seat 15, and the turning frame 16 is installed at the output end of the rotating cylinder.

[0035] The working principle of the above technical solution is: The turning cylinder works, thereby driving the turning frame 16 installed at its output end to rotate on the turning seat 15, thereby automatically lifting the clamping plate 17, resetting the turning frame 16, and releasing the material roll.

[0036] Example 7: On the basis of the above embodiment 1, an auxiliary clamping seat is installed on the welding table 10 away from the turning seat 15, the clamping sensor 36 is installed on the auxiliary clamping seat, and the turning frame 16 away from the turning seat 15 is abutted against the clamping sensor 36.

[0037] The working principle and beneficial effects of the above technical solution are: The turning frame 16 rotates on the turning base 15, causing the clamping plate 17 mounted on the turning frame 16 to tilt toward the web. The multiple capsules 18 remain in contact with the web's upper surface. The turning frame 16 rests on the auxiliary clamping base and contacts the clamping sensor 36, which signals the turning frame 16's accurate positioning. The auxiliary clamping base secures the turning frame 16 at the end away from the turning base 15.

[0038] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An automatic welding device for carbon fiber release cloth, characterized in that: include: A welding table (10) and an ultrasonic welding assembly (11) and a flexible clamping assembly (12) mounted on the welding table (10), wherein the ultrasonic welding assembly (11) includes a lifting seat (13) and an ultrasonic welding cutter head (14) connected to the lifting seat (13), two sets of flexible clamping assemblies (12) are symmetrically distributed on both sides of the ultrasonic welding cutter head (14), the flexible clamping assembly (12) includes a flip seat (15) and a flip frame (16) mounted on the flip seat (15), a clamping plate (17) is mounted on the flip frame (16), a plurality of capsules (18) are embedded at equal intervals at the bottom end of the clamping plate (17), the capsules (18) are filled with hydraulic oil containing magnetic particles, and an electromagnetic coil (19) is embedded at the bottom end of the clamping plate (17) corresponding to each capsule (18).

2. The automatic welding device for carbon fiber release cloth according to claim 1, characterized in that: The electromagnetic coil (19) is a flat coil.

3. The automatic welding device for carbon fiber release cloth according to claim 1, characterized in that: The lifting chamber (20) is located in the lifting seat (13), the lifting motor (21) is installed at the top of the lifting chamber (20), the lifting screw (22) is installed at the output end of the lifting motor (21), the lifting screw block (23) is sleeved on the lifting screw (22), the side lifting groove (24) is opened at the side end of the lifting seat (13) and is connected to the lifting chamber (20), the end of the lifting plate (25) extends from the side lifting groove (24) into the lifting chamber (20) and is connected to the lifting screw block (23), and the ultrasonic welding cutter head (14) is installed at the bottom end of the lifting plate (25).

4. The automatic welding device for carbon fiber release cloth according to claim 1, characterized in that: The clamping plate (17) is a hollow structure. A fixed transverse plate (26) is installed in the clamping plate (17). The same number of limit shells (27) as the number of the capsule (18) are installed at the bottom end of the fixed transverse plate (26). The top and bottom ends of the limit shells (27) are both open. The capsule (18) is located in the limit shell (27). The bottom end of the limit shell (27) is connected to the bottom end of the clamping plate (17). The bottom end of the capsule (18) is exposed from the limit shell (27). The electromagnetic coil (19) is embedded in the inner wall of the limit shell (27) near the bottom end. The side end of the capsule (18) is thickened near the bottom end and covered with a heat insulation film.

5. The automatic welding device for carbon fiber release cloth according to claim 4, characterized in that: The sac (18) is attached to the bottom end of the fixed transverse plate (26), and the pressure sensor (28) is installed on the fixed transverse plate (26) for monitoring the pressure between the sac (18) and the fixed transverse plate (26).

6. The automatic welding device for carbon fiber release cloth according to claim 4, characterized in that: A low-temperature heating rod (29) is installed at the bottom end of the fixed horizontal plate (26), and a heating section of the low-temperature heating rod (29) extends into the capsule (18) to heat the hydraulic oil in the capsule (18).

7. The automatic welding device for carbon fiber release cloth according to claim 6, characterized in that: The temperature sensor (30) is mounted on the fixed transverse plate (26) and is used to monitor the temperature of the hydraulic oil in the bladder (18).

8. The automatic welding device for carbon fiber release cloth according to claim 4, characterized in that: An equal number of micro pumps (31) are provided on the bladder (18) and are installed on the top of the fixed transverse plate (26). The micro pumps (31) are connected between the bladder (18) and the liquid storage tube (32). The liquid storage tube (32) is arranged between the top of the fixed transverse plate (26) and the top of the clamping plate (17). The micro air cooling device (33) is installed on the top of the clamping plate (17). The through hole (34) is opened on the fixed transverse plate (26). The air outlet (35) is opened at the bottom end of the clamping plate (17) and is arranged close to the electromagnetic coil (19).

9. The automatic welding device for carbon fiber release cloth according to claim 1, characterized in that: A rotating cylinder is mounted on the turning seat (15), and the turning frame (16) is mounted on the output end of the rotating cylinder.

10. The automatic welding device for carbon fiber release cloth according to claim 1, characterized in that: An auxiliary clamping seat is installed on the welding table (10) away from the turning seat (15), a clamping sensor (36) is installed on the auxiliary clamping seat, and the end of the turning frame (16) away from the turning seat (15) is abutted against the clamping sensor (36).

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