Mylar film forming equipment and Mylar film forming method

Abstract

The invention discloses mylar forming equipment and a mylar forming method. According to the technical scheme, the mylar forming equipment is characterized by comprising a workbench with a control module, a conveying mechanism, a stamping mechanism, a waste rolling mechanism, a coating mechanism and a fixing mechanism. The coating mechanism is used for coating the edge of the mylar film coiled material with a magnetic coating, and the magnetic coating is rapidly cured through the curing unit; the fixing mechanism utilizes a vacuum adsorption area and an electromagnetic suction area divided by an adsorption plate to realize efficient fixation of the mylar film, and the electromagnetic suction area forms a dynamic gradient magnetic field through a magnetic conductive sheet corresponding to the magnetic coating and an electromagnetic unit group to enhance the adsorption force to the edge; according to the technical scheme, the vacuum absorption area provides overall stable fixing force, and the electromagnetic absorption area effectively prevents edge slippage and warping. Compared with the prior art, the equipment overcomes the problems that single negative pressure adsorption force is insufficient and materials are prone to being damaged by mechanical clamping, and meanwhile, due to the synergistic effect of the coating mechanism and the fixing mechanism, the machining efficiency and the consistency of the quality of finished products are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of polyester film processing equipment, and particularly relates to a mylar sheet forming device and a forming method. Background Art

[0002] A mylar sheet is a polyester film formed by dimethyl terephthalate and ethylene glycol under the action of a specific catalyst through processes such as heating, transesterification, vacuum polycondensation, and biaxial stretching. It is also divided into different types according to different materials and uses; it is commonly used as an insulating material for electrical equipment, PCB boards, and electronic and electrical products.

[0003] Existing mylar sheets usually need to be stamped and cut to form. Conventional mylar sheet forming devices on the market will send a roll of mylar sheet coil to the stamping mechanism of the forming device through conveying rollers for stamping and cutting. During the processing of mylar sheets, due to their material characteristics (such as smooth surface, high flexibility, and thin thickness), problems such as slipping, warping, or unstable positioning are likely to occur during high-frequency stamping and high-speed conveying. Therefore, a fixed mechanism for clamping the mylar sheet is usually set on the equipment. For example, an automatic forming device for insulating mylar sheets disclosed in patent number (CN202122192069.7) will adsorb the coil through an adsorption plate after the coil reaches the stamping channel to prevent it from wrinkling.

[0004] However, negative pressure adsorption requires an airtight seal at the edge to maintain the vacuum state. However, the edge of the mylar sheet usually has tiny gaps left due to cutting or stamping processing, which easily leads to vacuum leakage, affecting the adsorption force and making it difficult to stably adsorb the edge of the mylar sheet. As a result, during stamping, the position of the mylar sheet moves. Moreover, the thickness of the mylar sheet is usually between dozens of micrometers and hundreds of micrometers, and the material is light in weight. When affected by external airflows, equipment vibrations, or mold pressures during processing, the edge is more likely to warp or even vibrate, thus more easily causing the position of the mylar sheet to shift during the stamping process, affecting the stamping forming quality.

[0005] If mechanical clamping is used, since mechanical clamping presses the edge of the coil tightly against the surface of the equipment by external force, if the pressure is too small, the fixing force for the coil is insufficient, resulting in the easy shift of the coil position. If the pressure is too large, it is easy to cause damage to the surface of the mylar sheet, affecting the forming quality of the mylar sheet; at the same time, because the mechanical clamping method interferes with the continuously and rapidly conveyed mylar sheet coil, it will affect the material continuity and is likely to cause damage to the material surface. Summary of the Invention

[0006] The present invention provides a mylar sheet forming device and a forming method, which solve the problem in the related technology that during the stamping process of the coil, unstable clamping leads to position shift, affecting the forming quality of the mylar sheet.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows: A mylar sheet forming device includes a workbench with a control module, a conveying mechanism is arranged on the workbench, and a stamping mechanism and a waste winding mechanism are arranged in sequence along the feeding direction of the conveying mechanism. A coating mechanism is also arranged on the workbench between the stamping mechanisms. The coating mechanism is used to coat a magnetic coating on the mylar sheet coil, and the magnetic coating is located at the edge of the part of the coil to be stamped. A fixing mechanism is also arranged on the workbench below the stamping mechanism. The fixing mechanism includes an adsorption plate embedded in the surface of the workbench. The adsorption plate includes a vacuum adsorption area in the middle and an electromagnetic suction area on its peripheral side edge. Adsorption holes are arranged on the surface of the vacuum adsorption area, and a negative pressure box connected to a negative pressure fan is arranged below it; the electromagnetic suction area has magnetism, and its position corresponds to the magnetic coating on the surface of the coil, and is used to adsorb the edge of the coil.

[0008] The present invention is further arranged as follows: The adsorption plate includes a connecting frame embedded in the workbench. One side of the connecting frame facing the stamping mechanism is provided with a support plate with adsorption holes on its surface. The negative pressure box is fixedly arranged below the support plate; a magnetic conduction sheet is arranged on the support plate at a position corresponding to the electromagnetic suction area. An installation frame connected to the support plate is arranged below the magnetic conduction sheet, and electromagnetic units electrically connected to the control module are distributed in the installation frame. The electromagnetic units are connected to the magnetic conduction sheet to make the magnetic conduction sheet magnetic.

[0009] The present invention is further arranged as follows: There are several rows of magnetic conduction sheets corresponding to the electromagnetic suction area. The shape of each row corresponds to the magnetic coating on the surface of the coil. Each row of magnetic conduction sheets is equidistantly distributed from the side close to the vacuum adsorption area to the outside. The electromagnetic units in the installation frame are arranged according to each row of magnetic conduction sheets, and each row of electromagnetic units forms a unit group connected to a current controller electrically connected to the control module. The current controller controls the magnetic force of the electromagnetic unit group through the control module.

[0010] The present invention is further arranged as follows: The magnetic force of the unit group gradually increases from the direction of the vacuum adsorption area to the outside.

[0011] The present invention is further arranged as follows: The coating mechanism includes a spraying unit and a curing unit arranged in sequence along the feeding direction of the conveying mechanism. The spraying unit is arranged above the conveying mechanism and is used to spray a magnetic coating on the surface of the coil; the curing unit is used to cure the magnetic coating.

[0012] The present invention is further arranged as follows: The spraying unit includes a spray pipe arranged on the workbench. One end of the spray pipe is connected to a coating storage tank, and the other end is detachably provided with a spray head corresponding to the shape and position of the edge of the coil. A delivery pump electrically connected to the control module is arranged between the coating storage tank and the spray pipe.

[0013] The present invention is further configured such that a heat dissipation hole is provided on one side of the installation frame, and the heat dissipation hole is connected to the negative pressure box.

[0014] A method for forming a mylar sheet, the specific steps are as follows: S1: Material preparation: Prepare the mylar sheet coil, then place it on the conveying mechanism of the coil forming equipment, and move one end of it along the feeding direction of the conveying mechanism to be connected to the waste winding mechanism; S2: Coating magnetic material: Coat magnetic paint on the upper surface edge of the mylar sheet coil through the coating mechanism; S3: Coating curing: Cure the mylar sheet coil that has been coated with magnetic paint through the coating mechanism; S4: Coil positioning: Send the mylar sheet coil after the magnetic paint is cured under the stamping mechanism, and then adsorb and fix the part to be stamped of the coil through the fixing mechanism; S5: Stamping and cutting: Stamp and cut the fixed mylar sheet coil into the required shape through the stamping mechanism to complete the forming of the mylar sheet; S6: Coating cleaning: Put the blanked mylar sheet into an ultrasonic cleaner to clean the residual paint on the mylar sheet.

[0015] The present invention is further configured such that the magnetic paint coated on the edge of the mylar sheet coil is in a frame shape, and the part to be stamped of the mylar sheet is located between the magnetic paints.

[0016] In summary, the beneficial effects of the present invention: Compared with the prior art, through the improvement of the fixing mechanism, the present application cleverly combines vacuum adsorption and electromagnetic adsorption. By dividing the vacuum adsorption area and the electromagnetic attraction area on the adsorption plate, the sheet material can always remain stable during high-speed conveying and stamping forming. This multiple fixing scheme overcomes the defect of insufficient negative pressure adsorption force in the traditional single method, effectively preventing the sheet material from slipping and warping, especially in the edge area of the material, greatly improving the processing accuracy, and at the same time avoiding the problem of damage to the coil caused by mechanical clamping.

[0017] At the same time, a coating mechanism is added to the equipment, which can form a uniform magnetic coating on the edge of the mylar sheet coil. Compared with the traditional separate coating process, through the integrated design of the equipment, this technical solution reduces the intermediate links between coating and forming processing, shortens the production cycle and improves the processing efficiency. Description of the Drawings

[0018] Figure 1 is the three-dimensional structure diagram of Embodiment 1.

[0019] Figure 2 is the bottom view of Embodiment 1.

[0020] Figure 3 It is the internal structure diagram of the coating mechanism.

[0021] Figure 4 It is the exploded schematic diagram of the fixing mechanism.

[0022] Figure 5 It is the three-dimensional diagram of the fixing mechanism.

[0023] Figure 6 It is the exploded structure diagram of the fixing mechanism.

[0024] Figure 7 It is the structure diagram of the electromagnetic unit.

[0025] Figure 8 It is the schematic diagram of the magnetic material spraying area of the mylar sheet coil.

[0026] Reference numerals: 100, workbench; 200, electrical box; 1, conveying mechanism; 10, conveying roller group; 11, guiding roller; 12, tensioning roller; 2, stamping mechanism; 20, mounting frame; 21, supporting roller; 22, upper module; 23, lower module; 24, telescopic cylinder; 3, waste rewinding mechanism; 4, coating mechanism; 40, spraying pipe; 41, coating storage tank; 42, spraying head; 43, conveying pump; 44, curing unit; 5, fixing mechanism; 50, adsorption plate; 51, mounting groove; 510, electromagnetic suction area; 511, vacuum adsorption area; 6, connecting frame; 61, supporting plate; 62, adsorption hole; 63, negative pressure box; 64, negative pressure fan; 65, magnetic conductive sheet; 66, electromagnetic unit; 67, mounting frame; 7, collection box; 8, coil material; 9, magnetic coating. Specific embodiments

[0027] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of the present invention.

[0028] As Figure 1-8 shown, this embodiment discloses a mylar sheet forming device, including a workbench 100 with a control module, a conveying mechanism 1 is arranged on the workbench 100, and a stamping mechanism 2 and a waste rewinding mechanism 3 are sequentially arranged along the feeding direction of the conveying mechanism 1. The control module includes an electrical box 200 connected to the device and a control panel. The electrical box 200 is arranged below the workbench 100, used for supplying power to the device and realizing electrical signal connection with each device, and a PLC control panel is arranged in the electrical box 200 for controlling each mechanism.

[0029] AsFigure 1 As shown in the figure, the conveying mechanism 1 includes a conveying roller group 10 provided at one end of the workbench 100, a guiding roller 11 and a tensioning roller 12 arranged in sequence along the conveying direction of the mylar sheet. The conveying roller group 10 is connected to a driving motor, and the driving motor is connected to the electrical box 200. Through the control panel, the driving motor can be controlled to drive the conveying roller group 10 to drive the length and conveying frequency of each conveyance of the mylar sheet roll 8. The conveying roller group 10 can clamp and convey the mylar sheet roll 8, so that it can sequentially pass through the coating mechanism 4, the stamping mechanism 2 and the waste material winding mechanism 3 along the workbench 100. The waste material winding mechanism 3 includes a winding roller, which is connected to one end of the roll 8 and is controlled by a driving motor that starts and stops synchronously with the conveying roller group 10, and can play a role in winding and pulling the roll 8, so that it can also play a role in conveying the roll 8. And by controlling the rotation speed of the winding roller, the tension control of the roll 8 can also be realized.

[0030] The guiding roller 11 located between the winding roller and the conveying roller group 10 can play a role in tensioning and supporting the roll 8, thereby avoiding the deformation of the roll 8. Two guiding rollers 11 are provided, which can reduce the contact between the roll 8 and the surface of the workbench 100, thereby avoiding damage caused by friction between the roll 8 and the surface of the workbench 100 during the conveying process. The two guiding rollers 11 are respectively located at both ends of the stamping mechanism 2, and the highest points of the two guiding rollers 11 are close to the fixing mechanism 5, so that the roll 8 can be as close as possible to the surface of the workbench 100, which is convenient for the fixing mechanism 5 to fix and adsorb the roll 8 when the roll 8 reaches below the stamping mechanism 2. At the same time, there is no sliding friction with the surface of the workbench 100.

[0031] As Figure 1 、 4 shown, the stamping mechanism 2 includes a support roller 21 and a mounting frame 20 fixed on the support roller 21. An upper module 22 is connected to the mounting frame 20 through a telescopic cylinder 24. A lower module 23 located on the fixing mechanism 5 is arranged on the surface of the workbench 100. A die-cutting knife is arranged on the upper module 22, and a knife groove matching the die-cutting knife is arranged on the lower module 23. This is to facilitate cutting the mylar sheet into corresponding shapes. Since the structures of the upper module 22 and the lower module 23 are prior arts, they are not shown in the figure. A sliding groove slidably matched with the support roller 21 is arranged on the side of the upper module 22. Through the cooperation of the sliding groove and the guiding roller 11, the stability and smoothness of the upper module 22 during the lifting process can be ensured, thereby improving the quality of the mylar sheet after stamping. A proximity sensor corresponding to the position of the magnetic coating on the surface of the mylar sheet is arranged on the lower die base. The proximity sensor is connected to the stamping mechanism 2 and the fixing mechanism 5 through a PLC control board. When the proximity sensor is triggered, the fixing mechanism 5 starts first, and then the stamping mechanism 2 starts subsequently to realize the blanking of the mylar sheet.

[0032] AsFigure 3 As shown, a coating mechanism 4 is also provided on the workbench 100 and is located between the stamping mechanisms 2. The coating mechanism 4 is used to coat a magnetic coating 9 on the mylar sheet coil, and the magnetic coating 9 is located at the edge of the stamping part of the coil, so as to ensure that the edge of the mylar sheet can be adsorbed by the fixing mechanism 5, thereby improving the blanking quality.

[0033] The coating mechanism 4 includes a spraying unit and a curing unit 44 arranged in sequence along the feeding direction of the conveying mechanism 1. The spraying unit is arranged above the conveying mechanism 1. When the coil 8 reaches below the coating mechanism 4, the spraying unit can spray the magnetic coating 9 on the surface of the mylar sheet, and then the curing unit 44 will subsequently cure the magnetic coating 9. The curing unit 44 uses a UV lamp group of high-power LEDs and can quickly cure the magnetic coating 9 in a few milliseconds to a few seconds by covering the conveying width and the peripheral side through a linear array, without affecting the stamping forming efficiency.

[0034] The spraying unit includes a spraying pipe 40 arranged on the workbench 100. One end of the spraying pipe 40 is connected to a coating storage tank 41, and the other end is detachably provided with a spraying head 42 corresponding to the shape and position of the edge of the coil. A delivery pump 43 electrically connected to the control module is arranged between the coating storage tank 41 and the spraying pipe 40. When the coil reaches below the spraying head 42, the delivery pump 43 connected to the electric control box will send the coating in the coating storage tank 41 to the spraying head 42 through the spraying pipe 40. A number of spraying holes corresponding to the size and position of the edge of the coil are arranged on the spraying head 42, and then the coating is applied to the edge of the coil through the spraying holes. Among them, for the starting or stopping state of the delivery pump 43, it can be manually input into the program of the equipment in advance to make it work according to a certain time period, or it can be triggered by the signal of a proximity switch sensor located below the stamping mechanism 2. When the previous mylar sheet is being processed, the spraying unit sprays and cures the edge of the mylar sheet.

[0035] When the mylar sheet coil sprayed with the magnetic coating 9 is sent to the fixing mechanism 5 located below the stamping mechanism 2 through the conveying device, the fixing mechanism 5 first adsorbs and fixes the mylar sheet.

[0036] As Figure 4 shown, the fixing mechanism 5 includes an adsorption plate 50 embedded in the surface of the workbench 100. An installation groove 51 is arranged on the workbench 100, and the adsorption plate 50 is clamped in the installation groove 51. The embedded adsorption plate 50 is convenient for the staff to disassemble and replace it, and at the same time, according to different types of adsorption plates 50, the size and shape of the vacuum adsorption area 511 and the electromagnetic suction area 510 on the adsorption plate 50 can be adjusted.

[0037] As Figure 5As shown, the adsorption plate 50 includes a vacuum adsorption area 511 located in the middle and an electromagnetic attraction area 510 located on the peripheral edge thereof. Adsorption holes 62 are provided on the surface of the vacuum adsorption area 511, and a negative pressure box 63 connected to a negative pressure fan 64 is provided below it. The lower module 23 is embedded above the vacuum adsorption area 511 corresponding to the adsorption plate 50, and the lower module 23 also has adsorption holes 62, so that the stable adsorption of the Mylar sheet can be ensured while achieving punching.

[0038] The electromagnetic attraction area 510 has magnetic force, which corresponds to the position of the magnetic coating 9 on the surface of the coil and can absorb the edge of the coil. Figure 6 As shown, the adsorption plate 50 includes a connecting frame 6 embedded in the workbench 100, and the lower end of the connecting frame 6 is clamped on the surface of the workbench 100. A support plate 61 with adsorption holes 62 on the surface is provided on the side facing the stamping mechanism 2. The negative pressure box 63 is fixedly provided below the support plate 61, and the lower template is embedded above the support plate 61; a through groove is provided on the support plate 61 at a position corresponding to the electromagnetic attraction area 510, and a magnetic conductive sheet 65 is embedded in the through groove. The top surface of the magnetic conductive sheet 65 is flush with the top surface of the support plate 61, and it can generate magnetism under the action of the electromagnetic unit 66. An installation frame 67 connected to the support plate 61 is provided below the magnetic conductive sheet 65, and an electromagnetic unit 66 electrically connected to the control module is distributed in the installation frame 67. The electromagnetic unit 66 is connected to the magnetic conductive sheet 65 to make the magnetic conductive sheet 65 magnetic.

[0039] When the Mylar sheet with magnetic coating 9 reaches the top of the fixing mechanism 5, the electromagnetic unit 66 is energized by the control module, generating a magnetic field. This magnetic field acts on the magnetic conductive sheet 65, causing the magnetic conductive sheet 65 to generate a magnetic force, thereby adsorbing the magnetic coating 9. The magnitude of the magnetic force can be controlled by controlling the current flowing through the electromagnetic unit 66. Therefore, precise adsorption can be achieved according to the thickness, material, and coating characteristics of the Mylar sheet. This precise adsorption effectively solves the problem of insufficient edge fixing force of traditional negative pressure adsorption, ensuring that the edge area does not warp or slip during high-speed stamping or cutting.

[0040] Negative pressure fan 64 then activates, generating negative pressure in negative pressure box 63, which then applies suction to the center of the Mylar sheet through suction holes 62, strengthening the sheet's securement. Negative pressure box 63 applies vacuum suction to the center of the sheet through suction holes 62 over a large area, further enhancing the overall securement of the sheet. The synergistic effect of negative pressure and electromagnetic suction ensures uniform force distribution across the sheet during processing, improving the precision of the cut portion while also effectively reducing the risk of vibration and material deformation.

[0041] By combining the electromagnetic unit 66 with negative pressure adsorption, not only the problem of local damage to the edge of the mylar sheet caused by traditional mechanical clamping is overcome, but also the defect of insufficient fixing force of single negative pressure adsorption at the sheet edge is solved. When the mylar sheet with a magnetic coating reaches the fixing mechanism 5, the electromagnetic unit 66 is dynamically energized under the action of the control module to generate a magnetic field. The magnetic field acts on the edge of the mylar sheet through the magnetic conduction sheet 65, making it stable during high-speed transportation and processing, and at the same time avoiding the indentation caused by the mechanical clamping points on the material surface.

[0042] In addition, the negative pressure adsorption device acts on the middle area of the mylar sheet to provide a large-area stable fixing force, working in coordination with electromagnetic adsorption to ensure the overall flatness of the sheet during processing and the accuracy of edge positioning. This multiple fixing method significantly improves the stability of the mylar sheet during high-speed stamping or cutting, avoids slipping and warping phenomena, ultimately improves the processing accuracy and the consistency of the formed parts, and at the same time has better adaptability to flexible and thin sheets.

[0043] As Figure 6 shown, the electromagnetic unit 66 is an electromagnetic coil composed of an iron core and a coil, and can be fixed in the installation frame 67 to ensure the stable installation of the electromagnetic unit 66.

[0044] At the same time, several rows of magnetic conduction sheets 65 are arranged corresponding to the electromagnetic suction area 510. The shape of each row corresponds to the magnetic coating 9 on the surface of the coil material. Each row of magnetic conduction sheets 65 is equidistantly distributed from the side close to the vacuum adsorption area 511 to the outside. The electromagnetic units 66 in the installation frame 67 are arranged according to each row of magnetic conduction sheets 65, and each row of electromagnetic units 66 forms a unit group connected to a current controller electrically connected to the control module. The current controller controls the magnetic force magnitude of the electromagnetic unit 66 group through the control module. The magnetic force of the unit group gradually increases from the direction of the vacuum adsorption area 511 outward.

[0045] By arranging several rows of magnetic conduction sheets 65 in the electromagnetic suction area 510, making the arrangement shape of the magnetic conduction sheets 65 correspond to the magnetic coating 9 on the surface of the coil material, and at the same time distributing the magnetic conduction sheets 65 equidistantly outward from the edge close to the vacuum adsorption area 511, a gradient change in the magnetic force distribution is formed, thus forming a precise and progressive multi-layer fixing effect. This design enables the mylar sheet to obtain a stronger fixing force gradually from the middle to the edge during the adsorption process, avoiding warping or slipping problems caused by insufficient force at the edge.

[0046] Each row of magnetic conductive sheets 65 corresponds to an independent unit group of electromagnetic units 66, which are individually adjusted by a current controller. The controller can dynamically adjust the magnetic force according to the material, thickness, and processing requirements of the coil material, making the magnetic force near the vacuum adsorption area 511 weaker and gradually increasing away from the area. This design of gradually increasing magnetic force gradient not only enhances the fixing effect on the edge area of the mylar sheet but also effectively adapts to the processing requirements of different sizes and characteristics of materials, significantly improving the compatibility and flexibility of the equipment.

[0047] Moreover, the magnetic conductive sheets 65 in the electromagnetic adsorption area 510 gradually increase the magnetic force from the vicinity of the vacuum adsorption area 511 outward. By adjusting the magnetic force of the electromagnetic unit 66 group through the current controller, an adsorption force gradient increasing from the middle to the edge is formed. During the adsorption process, since the vacuum adsorption area 511 does not adsorb the mylar sheet, a weak outward pulling effect is generated on the edge of the mylar sheet, thereby flattening the coil material and ensuring that it completely adheres to the adsorption plate 50.

[0048] Since the electromagnetic coil generates heat during operation, heat dissipation holes are provided on one side of the mounting frame 67, and the heat dissipation holes are connected to the negative pressure box 63. Therefore, during the operation of the negative pressure fan 64, heat inside the mounting frame 67 can be discharged simultaneously, achieving the effect of dissipating heat from the electromagnetic coil.

[0049] After the punching and forming of the mylar sheet are completed, the negative pressure fan 64 and the electromagnetic coil are turned off. The mylar sheet waste will be recycled with the waste winding roller, and for the formed mylar sheet, it will be blown into the collection box 7 by a pneumatic blowing device for collection. Among them, the pneumatic blowing device is a prior art, so it will not be elaborated in detail. Embodiment

[0050] A method for forming a mylar sheet, the specific steps are as follows: S1: Material preparation: Prepare the mylar sheet coil, then place it on the conveying mechanism of the coil forming equipment, and move one end of it along the feeding direction of the conveying mechanism to be connected to the waste winding mechanism; S2: Coating magnetic material: Coat magnetic paint on the upper surface edge of the mylar sheet coil through a coating mechanism; S3: Coating curing: Cure the mylar sheet coil that has been coated with magnetic paint through a coating mechanism; S4: Coil positioning: Send the mylar sheet coil after curing the magnetic paint under the stamping mechanism, and then adsorb and fix the part to be stamped of the coil through a fixing mechanism; S5: Stamping and cutting: Stamp and cut the fixed mylar sheet coil into the required shape through the stamping mechanism to complete the forming of the mylar sheet.

[0051] S6: Coating cleaning: Put the cut Mylar sheet into an ultrasonic cleaner to clean the residual coating on the Mylar sheet.

[0052] Among them, the magnetic coating applied to the edge of the Mylar sheet coil is in a frame shape, and the part of the Mylar sheet to be punched is located between the magnetic coatings.

[0053] Through the above forming method, it is possible to form a magnetic coating on the surface of the Mylar sheet, thus facilitating stable punching during the blanking process.

[0054] After the Mylar sheet is formed, the Mylar sheet can be placed in an ultrasonic cleaner filled with a temperature cleaning liquid to clean the coating.

[0055] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mylar sheet forming device, comprising a workbench (100) with a control module, a conveying mechanism (1) is arranged on the workbench (100), and a stamping mechanism (2) and a waste winding mechanism (3) are sequentially arranged along the feeding direction of the conveying mechanism (1), characterized in that, A coating mechanism (4) is further arranged on the workbench (100) between the stamping mechanisms (2). The coating mechanism (4) is used for coating a magnetic coating (9) on the mylar sheet coil. The magnetic coating (9) is located at the edge of the part of the coil to be stamped. A fixing mechanism (5) is further arranged on the workbench (100) below the stamping mechanism (2). The fixing mechanism (5) includes a suction plate (50) embedded in the surface of the workbench (100). The suction plate (50) includes a vacuum suction area (511) in the middle thereof and an electromagnetic suction area (510) on its peripheral side edge. Suction holes (62) are arranged on the surface of the vacuum suction area (511), and a negative pressure box (63) connected to a negative pressure fan (64) is arranged below it; the electromagnetic suction area (510) has magnetism, and its position corresponds to the magnetic coating (9) on the surface of the coil, and is used for adsorbing the edge of the coil.

2. The MYLAR sheet forming device according to claim 1, characterized in that, The suction plate (50) includes a connecting frame (6) embedded in the workbench (100). A support plate (61) with suction holes (62) on its surface is arranged on one side of the connecting frame (6) facing the stamping mechanism (2). The negative pressure box (63) is fixedly arranged below the support plate (61); a magnetic conduction sheet (65) is arranged on the support plate (61) at a position corresponding to the electromagnetic suction area (510). An installation frame (67) connected to the support plate (61) is arranged below the magnetic conduction sheet (65). Electromagnetic units (66) electrically connected to the control module are distributed in the installation frame (67). The electromagnetic units (66) are connected to the magnetic conduction sheet (65) to make the magnetic conduction sheet (65) magnetic.

3. A mylar sheet forming device according to claim 2, wherein, Several rows of magnetic conduction sheets (65) corresponding to the electromagnetic suction area (510) are arranged. The shape of each row corresponds to the magnetic coating (9) on the surface of the coil. Each row of magnetic conduction sheets (65) is equidistantly distributed and arranged from the side close to the vacuum suction area (511) to the outside. The electromagnetic units (66) in the installation frame (67) are arranged according to each row of magnetic conduction sheets (65), and each row of electromagnetic units (66) forms a unit group connected to a current controller electrically connected to the control module. The current controller controls the magnetic force magnitude of the electromagnetic unit (66) group through the control module.

4. A mylar sheet forming device according to claim 3, characterized in that, The magnetic force of the unit group gradually increases from the direction of the vacuum suction area (511) outwards.

5. A mylar sheet forming device according to claim 1, wherein The coating mechanism (4) includes a spraying unit and a curing unit (44) arranged in sequence along the feeding direction of the conveying mechanism (1). The spraying unit is arranged above the conveying mechanism (1) and is used for spraying the magnetic coating (9) on the surface of the coil; the curing unit (44) is used for curing the magnetic coating (9).

6. The MYLAR sheet forming device according to claim 5, wherein, The spraying unit includes a spraying pipe (40) arranged on the workbench (100). One end of the spraying pipe (40) is connected to a coating storage tank (41), and a spray head (42) corresponding to the shape and position of the edge of the coil is detachably arranged at the other end. A delivery pump (43) electrically connected to the control module is arranged between the coating storage tank (41) and the spraying pipe (40).

7. A mylar sheet forming device according to claim 2, wherein, One side of the installation frame (67) is provided with heat dissipation holes, and the heat dissipation holes are connected to the negative pressure box (63).

8. A method for forming a mylar sheet, which uses the mylar sheet forming device described in any one of claims 1-7, characterized in that: The specific steps are as follows: S1: Material preparation: Prepare the mylar sheet coil, then place it on the conveying mechanism of the coil forming equipment, and move one end of it along the feeding direction of the conveying mechanism to connect with the waste winding mechanism; S2: Coating of magnetic material: Coat the magnetic paint on the upper surface edge of the mylar sheet coil through the coating mechanism; S3: Curing of the paint: Cure the mylar sheet coil that has been coated with magnetic paint through the coating mechanism; S4: Coil positioning: Send the mylar sheet coil after the magnetic paint is cured under the stamping mechanism, and then adsorb and fix the part to be stamped of the coil through the fixing mechanism; S5: Stamping and cutting: Stamp and cut the fixed mylar sheet coil into the required shape through the stamping mechanism to complete the forming of the mylar sheet; S6: Paint cleaning: Put the blanked mylar sheet into an ultrasonic cleaner to clean the residual paint on the mylar sheet.

9. A method for forming a mylar sheet according to claim 8, characterized in that, The magnetic paint coated on the edge of the mylar sheet coil is in a frame shape, and the part to be stamped of the mylar sheet is located between the magnetic paints.

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