CN112518887A

CN112518887A - Metalized film capacitor film medium fillet cutting device and method

Info

Publication number: CN112518887A
Application number: CN202011162893.1A
Authority: CN
Inventors: 陈由兵; 王小见
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-03-19

Abstract

The invention relates to the field of thin film capacitors, in particular to a metallized thin film capacitor fillet cutting device and method. The device comprises a film fillet mechanism and a film cutting mechanism; the input end of the film fillet mechanism is connected with the output end of the film forming device, and the output end of the film fillet mechanism is connected with the feed end of the film cutting mechanism; the discharge end of the film cutting mechanism is connected with the input end of the conveying device; the film fillet mechanism is used for performing fillet treatment on the formed film medium; the film cutting mechanism is used for cutting and separating a plurality of processed continuous film media. The device reduces the cutting time of the film medium by arranging the film cutting mechanism, and improves the working environment; the fillet step of the film medium is reduced by arranging the film fillet mechanism, so that the rapid forming of the fillet of the film medium is ensured.

Description

Metalized film capacitor film medium fillet cutting device and method

Technical Field

The invention relates to the field of thin film capacitors, in particular to a metalized thin film capacitor thin film medium fillet cutting device and method.

Background

The metallized film capacitor is manufactured by taking an organic plastic film as a medium, taking a metallized film as an electrode and winding the metallized film. The metallized film capacitor has excellent characteristics: non-polarity, high insulation resistance, excellent frequency characteristics (wide frequency response), and low dielectric loss, and thus has been widely used. The films used in metallized film capacitors are polyethylene, polypropylene, polycarbonate, etc., and the film dielectric has a significant effect on the performance of the metallized film capacitor. The quality of the production quality of the film medium directly influences the properties of the metallized film capacitor, such as dielectric constant, insulating strength, self-recovery characteristic, temperature stability and the like. Therefore, the production process of the thin film dielectric is very important for the metallized thin film capacitor.

The Chinese invention patent application (publication No. CN111627706A, published: 20200904) discloses a film capacitor and an automatic production device and a method thereof, which comprises a frame, and a feeding and conveying device, a clamping and moving device, a multifunctional forming device, a rotating and turning device, an inverted conveying device, a pipe penetrating device and a pipe pressing device which are arranged on the frame; the feeding conveying device is connected with the clamping and moving device, and the multifunctional forming device is positioned below the clamping and moving device; the multifunctional forming device is connected with the inverted conveying device by the rotary material turning device; the pipe penetrating device and the pipe pressing device are located above the inverted conveying device, and the rack is further provided with a blanking barrel which is connected with the discharging side of the inverted conveying device. The invention has the advantages of high efficiency of moving the film capacitor between stations and accurate position; the pins are flat and uniform in length, the two times of bending are finished by one time of action, and the forming and bending efficiency is high; the mobile capacitor is inverted, and the capacitor pins are positioned, so that tube penetration is facilitated; the heat-shrinkable tube is assembled integrally, and the tube penetration success rate is high.

The prior art has the following defects: 1. when continuous film media are cut off, an air cylinder is adopted to drive an upper cutting knife to move downwards, and then the upper cutting knife is contacted with a lower cutting knife to cut off the continuous film media positioned between the upper cutting knife and the lower cutting knife; the cylinder is driven by gas, and the gas has certain compressibility; when the cylinder drives the upper cutting knife to move downwards to contact with the upper surface of the lower cutting knife, the upper cutting knife bears larger reverse supporting force of the lower cutting knife; when the reverse supporting force is transmitted to the driving cylinder, the gas in the cylinder is further compressed so as to drive the cylinder rod to move upwards and rebound; when the reverse supporting force is attenuated to a degree that the gas in the cylinder is not compressed further, the cylinder rod moves upwards and stops, and the upper cutting knife can stably fall down; in order to avoid cutting off other parts of the film medium in the process of upward movement and rebound of the unstable upper cutter, the continuous film medium can be conveyed forwards continuously after the upper cutter is stabilized, so that the cutting time of the film medium is prolonged; meanwhile, when the air cylinder is adopted for driving, the air cylinder can generate larger noise when moving up and down, and the improvement of the working environment is not facilitated. 2. When fillet processing is carried out on adjacent film media, a fillet is formed in one step by adopting a fillet die respectively, and the fillet processing of the adjacent film media is completed in two steps; and need the die-cut shaping of fillet mould twice when dividing twice to accomplish the fillet of adjacent film medium and handle, cause the fillet step more, be unfavorable for the rapid prototyping of film medium fillet.

Disclosure of Invention

The purpose of the invention is: aiming at the problems, the film cutting mechanism is arranged to reduce the cutting time of the film medium and improve the working environment; the fillet cutting device and method for the metallized film capacitor film medium ensure the rapid forming of the fillet of the film medium by the step of reducing the fillet of the film medium by the film fillet mechanism.

In order to achieve the purpose, the invention adopts the following technical scheme:

a metallized film capacitor fillet cutting device comprises a film fillet mechanism and a film cutting mechanism; the film round angle mechanism and the film cutting mechanism are both fixed on the workbench; the input end of the film fillet mechanism is connected with the output end of the film forming device, and the output end of the film fillet mechanism is connected with the feed end of the film cutting mechanism; the discharge end of the film cutting mechanism is connected with the input end of the conveying device; the film fillet mechanism is used for performing fillet treatment on the formed film medium; the film cutting mechanism is used for cutting and separating a plurality of processed continuous film media; the film cutting mechanism comprises a cutting rack, a cutting motor, a cutting crankshaft, a cutting guide rail slide block, a cutting connecting rod, an upper cutting head and a lower cutting head; the cut-off crankshaft comprises a crankshaft input end and a crankshaft output end; the input end of the crankshaft is in running fit with the cutting rack, and the output end of the cutting motor is connected with the input end of the crankshaft; the input end of the crankshaft is eccentrically connected with the output end of the crankshaft, and the output end of the crankshaft is connected with the upper end of the cutting connecting rod; the lower end of the cutting connecting rod is hinged with the upper cutting head, the upper cutting head is connected with a sliding block in the cutting guide rail sliding block, and the output end of the upper cutting head is connected with the output end of the lower cutting head; the upper and lower cutter heads are used to cut the continuous film medium.

Preferably, the upper cutting head comprises an upper cutting rod, a cutting connecting seat and an upper cutting knife; the upper cutting rod is connected with a sliding block in the sliding block of the cutting guide rail, the upper end of the upper cutting rod is hinged with the lower end of the cutting connecting rod, and the lower end of the upper cutting rod is connected with the cutting connecting seat; the cutting connecting seat is connected with the upper cutting knife; the upper cutter is an inclined cutter.

Preferably, the upper cutting head also comprises a pressure plate guide post, a pressure plate spring and an upper pressure plate; the fixed end of the pressure plate guide pillar is connected with the cutting-off connecting seat, and the movable end of the pressure plate guide pillar is connected with the upper pressure plate; two ends of the pressure plate spring are respectively contacted with the cutting connecting seat and the upper surface of the upper pressure plate; the lower surface of the upper pressure plate is contacted with or separated from the upper surface of the film medium. The upper cutting head also comprises a cutting guide pillar and a guide sleeve; the guide post in the cutting guide post and guide sleeve is fixed on the cutting machine frame, and the guide sleeve in the cutting guide post and guide sleeve is connected with the cutting connecting seat; the film cutting mechanism also comprises a film traction assembly; the film traction assembly comprises a traction roller; the traction roller is respectively contacted with the upper surface and the lower surface of the film medium, and the output end of the traction roller is connected with the output end of the lower cutting head.

Preferably, the film fillet mechanism comprises a fillet frame, a fillet driving assembly, a fillet upper die and a fillet lower die; the fillet driving assembly and the fillet lower die are fixed on the fillet rack, and the output end of the fillet driving assembly is connected with the fillet upper die; the output end of the upper fillet mould and the output end of the lower fillet mould are respectively contacted with the upper surface and the lower surface of the film medium, and the output end of the upper fillet mould is matched with the output end of the lower fillet mould; the fillet driving assembly is used for driving the fillet upper die to move up and down; the fillet upper die and the fillet lower die are used for performing fillet treatment on the film medium; the fillet upper die comprises an upper die seat and an upper die head; the upper die head comprises an electrode punching part, a first fillet part, a slot cutting part and a second fillet part; the electrode punching parts are aligned with the punching parts of the adjacent two thin film medium electrode connecting sheets, and the electrode punching parts are symmetrically distributed along the groove cutting parts; the first round corner part is aligned with the round corner part at the front end of the rear film medium in the plurality of connected film media, and the second round corner part is aligned with the round corner part at the rear end of the front film medium in the plurality of connected film media; the cutting groove part is positioned between the first round corner part and the second round corner part, the cutting groove part is aligned with the cutting part, and the width of the cutting groove part is the same as that of the cutting part of the upper cutting blade; the upper die base is used for fixing the upper die head and driving the upper die head to move up and down.

Preferably, the electrode blanking portion is rectangular; the upper die base comprises an upper die base and an upper die guide column; the upper die base is respectively connected with the output end of the fillet driving assembly and the upper die head; the fixed end of the upper die guide column is fixed on the fillet frame, and the movable end of the upper die guide column is connected with the upper die base; the upper die base also comprises an upper die pressing plate and an upper pressing plate spring; the upper die pressing plate is connected with the upper die base in a sliding manner, and corresponding hole positions of the upper die pressing plate are matched with the upper die head; two ends of the upper pressure plate spring are respectively contacted with the lower surface of the upper die base and the upper surface of the upper die pressure plate.

Preferably, the fillet lower die comprises a lower die fixing seat and a lower die head; the lower die fixing seat is fixed on the fillet frame and connected with the lower die head, and the corresponding groove of the lower die head is matched with the upper die head; the fillet lower die also comprises a waste collection box; the waste collecting box is fixed on the workbench, and the input end of the waste collecting box is connected with the output end of the corresponding groove of the lower die head. The fillet lower die also comprises a film guide sheet; the film guide sheet is fixed on the round-angle stand, and the upper surface of the film guide sheet is contacted with the lower surface of the film medium; the height of the upper surface of the film guide plate is the same as that of the lower die head, and the output end of the film guide plate is connected with the lower die head. The film fillet mechanism also comprises a fillet guide rail slide block; the guide rail in the fillet guide rail sliding block is fixed on the waste collection box, and the sliding block in the fillet guide rail sliding block is connected with the bottom of the fillet machine frame.

In addition, the invention also discloses a metalized film capacitor film medium fillet cutting method, which adopts the metalized film capacitor film medium fillet cutting device and comprises the following steps:

(I) rounding of the thin film medium: 1) the film forming device conveys the film medium to a fillet station; 2) the fillet driving component acts to drive the upper die base and the upper die head to move downwards; 3) moving the upper die pressing plate downwards to press the film medium tightly; the upper die head moves downwards to be matched with the corresponding groove of the lower round-corner die, and the electrode punching part in the upper die head simultaneously cuts off the punching parts of two adjacent thin film media; the first round corner part and the second round corner part respectively form the round corner part at the front end of the rear film medium and the round corner part at the rear end of the front film medium at the same time; the cutting groove part cuts off the cutting parts of two adjacent thin film media simultaneously; 4) the waste material collecting box collects the cut-off part of the film medium in the process of cutting off and forming the fillet of the upper die head to complete the process of processing the fillet of the film medium;

(II) cutting the film medium: 1) the film traction assembly conveys continuous film media to a cutting station on the upper surface of the lower cutting head; 2) the cutting motor rotates to drive the cutting crankshaft connected with the cutting motor to rotate, and the eccentric crankshaft output end drives the cutting connecting rod to move downwards; 3) the cutting connecting rod moves downwards to drive the upper cutting head connected with the cutting connecting rod to move downwards along a guide rail in the cutting guide rail sliding block; 4) the upper pressing plate moves downwards to press the film medium on the upper surface of the lower cutting head, and the upper cutting knife moves downwards to cut the film medium below to finish the cutting process of the film medium.

The metallized film capacitor film medium fillet cutting device and the method adopting the technical scheme have the advantages that:

1. the cutting motor, the cutting crankshaft, the cutting connecting rod and the upper cutting head are arranged; after the film medium is conveyed to a cutting station, a cutting motor rotates to drive a cutting crankshaft connected with the cutting motor to rotate, and an eccentric crankshaft output end drives a cutting connecting rod to move downwards; the cutting connecting rod moves downwards to drive the upper cutting head connected with the cutting connecting rod to move downwards along a guide rail in the cutting guide rail sliding block; the upper pressing plate moves downwards to press the film medium on the upper surface of the lower cutting head, and the upper cutting knife moves downwards to cut the film medium below to finish the cutting process of the film medium. The upper cutting knife is driven by rigid structures such as a cutting motor, a cutting crankshaft and a cutting connecting rod, and gas compression deformation cannot be generated; the upper cutting knife can be offset by the driving force provided by the cutting motor when the upper cutting knife cuts the film medium and is subjected to the larger reverse supporting force of the lower cutting knife, namely the upper cutting knife can be kept stable at the cutting position, and the condition that the gas in the cylinder is further compressed to drive the cylinder rod to move upwards and rebound when the reverse supporting force is transmitted to the driving cylinder when the cylinder is driven is avoided; the continuous film medium only needs to wait for the time of the upper cutting knife in the cutting process, and does not need to wait for the time of the upper cutting knife returning to the stable state from the rebound state when the cylinder is driven, so that the cutting efficiency of the film medium is improved. Meanwhile, the sound is small when the motor is cut off, so that huge noise generated by compressed gas when the air cylinder is driven is reduced, and the working environment of personnel is improved.

2. By arranging a round angle upper die; after the film medium is conveyed to the fillet station, the fillet driving assembly acts to drive the upper die base and the upper die head to move downwards; moving the upper die pressing plate downwards to press the film medium tightly; the upper die head moves downwards to be matched with the corresponding groove of the lower round-corner die, and the electrode punching part in the upper die head simultaneously cuts off the punching parts of two adjacent thin film media; the first round corner part and the second round corner part respectively form the round corner part at the front end of the rear film medium and the round corner part at the rear end of the front film medium at the same time; the cutting groove part cuts off the cutting parts of two adjacent thin film media simultaneously; and the waste collection box collects the cut-off part of the film medium in the process of cutting off the round angle of the upper die head to finish the process of processing the round angle of the film medium. The electrode punching part in the upper die head is aligned with the punching parts of the adjacent two film medium electrode connecting sheets, and the first round corner part and the second round corner part are respectively aligned with the front-end round corner part and the rear-end round corner part in the adjacent film medium; namely, when the upper die head falls down and is punched, the round corners of two adjacent film media can be simultaneously formed, and only one-step forming step is needed when the round corners are formed; therefore, the condition that two molding steps are needed when one fillet is molded at one time is avoided, the fillet molding steps are reduced, and the rapid molding of the fillet of the film medium is ensured.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic diagram of a product structure of a monolithic metallized thin film capacitor thin film dielectric.

FIG. 3 is a schematic diagram of a product structure of a metallized film capacitor film dielectric during continuous feeding.

FIG. 4 is a schematic view of a partially enlarged product structure of a metalized film capacitor dielectric fillet and a cut-off portion.

FIG. 5 is a schematic view showing the structure of the film cutting mechanism.

Fig. 6 is a schematic view of a structure in which the crankshaft is cut off.

Fig. 7 is a schematic structural view of the upper cutting head.

Fig. 8 is a schematic structural diagram of a film rounding mechanism.

Fig. 9 is a schematic view of a rounded upper die.

Fig. 10 is a schematic structural view of an upper die head.

Fig. 11 is a partially enlarged view of the film guide.

Detailed Description

The following describes in detail embodiments of the present invention with reference to the drawings.

Example 1

A film round corner cutting apparatus 1 shown in fig. 1, which comprises a film round corner mechanism 3 and a film cutting mechanism 4; the film round angle mechanism 3 and the film cutting mechanism 4 are both fixed on the workbench; the input end of the film round angle mechanism 3 is connected with the output end of the film forming device, and the output end of the film round angle mechanism 3 is connected with the feed end of the film cutting mechanism 4; the discharge end of the film cutting mechanism 4 is connected with the input end of the conveying device; the film fillet mechanism 3 is used for performing fillet treatment on the formed film medium; the film cutting mechanism 4 is used for cutting and separating a plurality of processed continuous film media.

The product flow direction of the film medium is: a film rounding mechanism 3 to a film cutting mechanism 4.

Fig. 2, fig. 3 and fig. 4 are schematic diagrams of the structures of a single-piece product, a continuous product and a product of a continuous product of a metalized film capacitor film medium at the fillet and cut-off part, respectively. The metallized film capacitor film medium a comprises an electrode connecting sheet b, a punching part c, a fillet part d and a cutting part e; the electrode connecting sheet b is positioned at one end of the metallized film capacitor film medium a, the tail end of the electrode connecting sheet b is transited through a round angle part d, and the round angle part d is connected with a round angle die in the film round angle cutting device 1; the punching positions c of two adjacent metallized film capacitor film media a are mutually communicated and are connected with a fillet die in a film fillet cutting device 1; the cutting part e is positioned at the edge of the metallized film capacitor film medium a and is connected with a cutting knife in the film fillet cutting device 1.

As shown in fig. 5 and 6, the film cutting mechanism 4 includes a cutting frame, a cutting motor 41, a cutting crankshaft 42, a cutting guide slider 43, a cutting link 44, an upper cutting head 45, and a lower cutting head 46; the cutoff crankshaft 42 includes a crankshaft input 421 and a crankshaft output 422; the crankshaft input end 421 is in running fit with the cutting frame, and the output end of the cutting motor 41 is connected with the crankshaft input end 421; the crankshaft input end 421 and the crankshaft output end 422 are eccentrically connected, and the crankshaft output end 422 is connected with the upper end of the cut-off connecting rod 44; the lower end of the cutting connecting rod 44 is hinged with an upper cutting head 45, the upper cutting head 45 is connected with a slide block in the cutting guide rail slide block 43, and the output end of the upper cutting head 45 is connected with the output end of a lower cutting head 46; the upper cutter head 45 and the lower cutter head 46 are used to cut the continuous film medium.

As shown in fig. 7, the upper cutter head 45 includes a cutter upper bar 451, a cutter link base 452, and an upper cutter 453; the upper cutting bar 451 is connected with the slider in the cutting guide slider 43, the upper end of the upper cutting bar 451 is hinged with the lower end of the cutting connecting rod 44, and the lower end of the upper cutting bar 451 is connected with the cutting connecting seat 452; the cutting-off connecting base 452 is connected with the upper cutting-off blade 453; the upper cutter 453 is an inclined cutter; the upper cutter head 45 further includes a presser plate guide post 454, a presser plate spring 455, and an upper presser plate 456; the fixed end of the pressure plate guide post 454 is connected with the cutting-off connecting seat 452, and the movable end of the pressure plate guide post 454 is connected with the upper pressure plate 456; the two ends of the pressing plate spring 455 are respectively contacted with the upper surfaces of the cutting and connecting seat 452 and the upper pressing plate 456; the lower surface of the upper platen 456 is in contact with or separated from the upper surface of the thin film medium.

As shown in fig. 5, the upper cutting head 45 further includes a cutting guide post guide sleeve 457; a guide post in the cutting guide post guide sleeve 457 is fixed on the cutting machine frame, and the guide sleeve in the cutting guide post guide sleeve 457 is connected with the cutting connecting seat 452; the film severing mechanism 4 also includes a film pulling assembly 47; the film take-up assembly 47 includes take-up rollers 471; the drawing roller 471 is respectively contacted with the upper and lower surfaces of the film medium, and the output end of the drawing roller 471 is connected with the output end of the lower cutting head 46.

The film cutting mechanism 4 is in operation: 1) the film drawing assembly 47 conveys the continuous film media to the upper surface cutting station of the lower cutting head 46; 2) the cutting motor 41 rotates to drive the cutting crankshaft 42 connected with the cutting motor to rotate, and the eccentric crankshaft output end 422 drives the cutting connecting rod 44 to move downwards; 3) the cutting connecting rod 44 moves downwards to drive the upper cutting head 45 connected with the cutting connecting rod to move downwards along a guide rail in the cutting guide rail sliding block 43; 4) the upper press plate 456 moves downwards to press the film medium on the upper surface of the lower cutting head 46, and the upper cutter 453 moves downwards to cut the film medium below, so that the film medium cutting process is completed.

The film cutting mechanism 4 solves the problem that when continuous film media are cut off, the upper cutting knife is driven to move downwards by the air cylinder, and then the upper cutting knife is contacted with the lower cutting knife to cut off the continuous film media positioned between the upper cutting knife and the lower cutting knife; the cylinder is driven by gas, and the gas has certain compressibility; when the cylinder drives the upper cutting knife to move downwards to contact with the upper surface of the lower cutting knife, the upper cutting knife bears larger reverse supporting force of the lower cutting knife; when the reverse supporting force is transmitted to the driving cylinder, the gas in the cylinder is further compressed so as to drive the cylinder rod to move upwards and rebound; when the reverse supporting force is attenuated to a degree that the gas in the cylinder is not compressed further, the cylinder rod moves upwards and stops, and the upper cutting knife can stably fall down; in order to avoid cutting off other parts of the film medium in the process of upward movement and rebound of the unstable upper cutter, the continuous film medium can be conveyed forwards continuously after the upper cutter is stabilized, so that the cutting time of the film medium is prolonged; meanwhile, when the air cylinder is adopted for driving, the air cylinder can generate larger noise when moving up and down, and the problem of improvement of the working environment is not facilitated. By arranging a cutting motor 41, a cutting crankshaft 42, a cutting connecting rod 44 and an upper cutting head 45; after the film medium is conveyed to the cutting station, the cutting motor 41 rotates to drive the cutting crankshaft 42 connected with the cutting motor to rotate, and the eccentric crankshaft output end 422 drives the cutting connecting rod 44 to move downwards; the cutting connecting rod 44 moves downwards to drive the upper cutting head 45 connected with the cutting connecting rod to move downwards along a guide rail in the cutting guide rail sliding block 43; the upper press plate 456 moves downwards to press the film medium on the upper surface of the lower cutting head 46, and the upper cutter 453 moves downwards to cut the film medium below, so that the film medium cutting process is completed. The upper cutter 453 is driven by rigid structures such as the cutting motor 41, the cutting crankshaft 42, and the cutting link 44, and does not generate gas compression deformation; the upper cutting knife can be offset by the driving force provided by the cutting motor 41 when the upper cutting knife cuts the film medium and is subjected to the larger reverse supporting force of the lower cutting knife, namely the upper cutting knife can be kept stable at the cutting position, and the condition that the gas in the cylinder is further compressed to drive the cylinder rod to move upwards and rebound when the reverse supporting force is transmitted to the driving cylinder when the cylinder is driven is avoided; the continuous film medium only needs to wait for the time of the process of cutting by the upper cutter 453, and does not need to wait for the time of the upper cutter returning from the rebound state to the stable state when the cylinder is driven, so that the cutting efficiency of the film medium is improved. Meanwhile, the sound is small when the cutting motor 41 is used for driving, so that huge noise generated by compressed gas when the air cylinder is used for driving is reduced, and the working environment of personnel is improved.

As shown in fig. 8, the film rounding mechanism 3 includes a rounding frame 31, a rounding drive assembly 32, a rounding upper die 33 and a rounding lower die 34; the fillet driving assembly 32 and the fillet lower die 34 are fixed on the fillet frame 31, and the output end of the fillet driving assembly 32 is connected with the fillet upper die 33; the output end of the fillet upper die 33 and the output end of the fillet lower die 34 are respectively contacted with the upper surface and the lower surface of the film medium, and the output end of the fillet upper die 33 is matched with the output end of the fillet lower die 34; the fillet driving assembly 32 is used for driving the fillet upper die 33 to move up and down; the round upper die 33 and the round lower die 34 are used for round processing of the thin film medium.

As shown in fig. 9 and 10, the round upper die 33 includes an upper die base 35 and an upper die head 36; the upper die head 36 includes an electrode blanking portion 361, a first rounded portion 362, a cutaway portion 363, and a second rounded portion 364; the electrode punching parts 361 are aligned with the punching parts of the adjacent two thin film medium electrode connecting sheets, and the electrode punching parts 361 are symmetrically distributed along the cutting groove part 363; the first rounded portion 362 is aligned with a rounded portion at the front end of a rear thin film medium of the plurality of connected thin film media, and the second rounded portion 364 is aligned with a rounded portion at the rear end of a front thin film medium of the plurality of connected thin film media; the cutaway groove section 363 is located between the first rounded section 362 and the second rounded section 364, the cutaway groove section 363 is aligned with the cutting site, and the width of the cutaway groove section 363 is the same as the width of the cutting site of the upper cutting blade 453; the upper die base 35 is used for fixing the upper die head 36 and driving the upper die head 36 to move up and down. The electrode blanking portion 361 is rectangular; the upper die base 35 includes an upper die base 351 and an upper die guide post 352; the upper die base 351 is connected with the output end of the fillet driving assembly 32 and the upper die head 36 respectively; the fixed end of the upper die guide post 352 is fixed on the fillet frame 31, and the movable end of the upper die guide post 352 is connected with the upper die base 351; the upper die holder 35 further includes an upper die platen 353 and an upper platen spring 354; the upper die pressing plate 353 is connected with the upper die base 351 in a sliding manner, and corresponding hole positions of the upper die pressing plate 353 are matched with the upper die head 36; the upper platen spring 354 has both ends in contact with the lower surface of the upper mold base 351 and the upper surface of the upper mold platen 353, respectively.

As shown in fig. 11, the round lower die 34 includes a lower die holder 341 and a lower die head 342; the lower die holder 341 is fixed on the fillet frame 31, and the lower die holder 341 is connected with the lower die head 342, and the corresponding groove of the lower die head 342 is matched with the upper die head 36.

As shown in fig. 8, the rounded lower die 34 further includes a scrap collection box 343; the scrap collecting box 343 is fixed to the table and the input end of the scrap collecting box 343 is engaged with the output end of the corresponding groove of the lower die head 342.

As shown in fig. 11, the rounded lower die 34 further includes a film guide 344; the film guide 344 is fixed to the round-corner frame 31, and the upper surface of the film guide 344 is in contact with the lower surface of the film medium; the upper surface of the film guide 344 is at the same height as the lower die head 342 and the output end of the film guide 344 is engaged with the lower die head 342.

As shown in fig. 8, the film rounding mechanism 3 further comprises a rounding rail slider 37; the rails of the radiused rail slide 37 are fixed to the scrap box 343 and the rails of the radiused rail slide 37 are attached to the bottom of the radiused frame 31.

The film rounding mechanism 3 is in the working process: 1) the film forming device conveys the film medium to a fillet station; 2) the fillet driving component 32 acts to drive the upper die base 35 and the upper die head 36 to move downwards; 3) the upper die pressing plate 353 moves downwards to press the film medium tightly; the upper die head 36 moves downwards to be matched with the corresponding groove of the fillet lower die 34, and the electrode punching part 361 in the upper die head 36 cuts off the punching parts of two adjacent thin film mediums simultaneously; the first round part 362 and the second round part 364 respectively form the round part at the front end of the rear film medium and the round part at the rear end of the front film medium at the same time; the cutting groove part 363 cuts off the cutting parts of two adjacent thin film mediums simultaneously; 4) the waste collection box 343 collects the cut-off part of the film medium in the process of cutting off the round angle of the upper die head 36 to complete the process of machining the round angle of the film medium.

The film fillet mechanism 3 solves the problem that when fillet processing is carried out on adjacent film media, a fillet is formed in one step by adopting a fillet die respectively, and the fillet processing of the adjacent film media is completed in two times; and need the die-cut shaping of fillet mould twice when dividing twice to accomplish the fillet processing of adjacent film medium, cause the fillet step more, be unfavorable for the rapid prototyping's of film medium fillet problem. By providing a rounded upper die 33; after the film medium is conveyed to the fillet station, the fillet driving assembly 32 acts to drive the upper die base 35 and the upper die head 36 to move downwards; the upper die pressing plate 353 moves downwards to press the film medium tightly; the upper die head 36 moves downwards to be matched with the corresponding groove of the fillet lower die 34, and the electrode punching part 361 in the upper die head 36 cuts off the punching parts of two adjacent thin film mediums simultaneously; the first round part 362 and the second round part 364 respectively form the round part at the front end of the rear film medium and the round part at the rear end of the front film medium at the same time; the cutting groove part 363 cuts off the cutting parts of two adjacent thin film mediums simultaneously; the waste collection box 343 collects the cut-off part of the film medium in the process of cutting off the round angle of the upper die head 36 to complete the process of machining the round angle of the film medium. The electrode punching part 361 in the upper die head 36 is aligned with the punching parts of the electrode connecting sheets of the adjacent two thin film mediums, and the first round part 362 and the second round part 364 are respectively aligned with the front end round part and the rear end round part in the adjacent thin film mediums; namely, when the upper die head 36 falls down and is punched, the round corners of two adjacent film media can be simultaneously formed, and only one-step forming step is needed when the round corners are formed; therefore, the condition that two molding steps are needed when one fillet is molded at one time is avoided, the fillet molding steps are reduced, and the rapid molding of the fillet of the film medium is ensured.

Claims

1. A metallized film capacitor film medium fillet cutting device is characterized by comprising a film fillet mechanism (3) and a film cutting mechanism (4); the film round angle mechanism (3) and the film cutting mechanism (4) are fixed on the workbench; the input end of the film round angle mechanism (3) is connected with the output end of the film forming device, and the output end of the film round angle mechanism (3) is connected with the feed end of the film cutting mechanism (4); the discharge end of the film cutting mechanism (4) is connected with the input end of the conveying device; the film fillet mechanism (3) is used for performing fillet treatment on the formed film medium; the film cutting mechanism (4) is used for cutting and separating a plurality of processed continuous film media;

the film cutting mechanism (4) comprises a cutting rack, a cutting motor (41), a cutting crankshaft (42), a cutting guide rail slide block (43), a cutting connecting rod (44), an upper cutting head (45) and a lower cutting head (46); the cut-off crankshaft (42) comprises a crankshaft input end (421) and a crankshaft output end (422); the crankshaft input end (421) is in running fit with the cutting rack, and the output end of the cutting motor (41) is connected with the crankshaft input end (421); the crankshaft input end (421) is eccentrically connected with the crankshaft output end (422), and the crankshaft output end (422) is connected with the upper end of the cut-off connecting rod (44); the lower end of the cutting connecting rod (44) is hinged with an upper cutting head (45), the upper cutting head (45) is connected with a slide block in the cutting guide rail slide block (43), and the output end of the upper cutting head (45) is connected with the output end of the lower cutting head (46); the upper cutting head (45) and the lower cutting head (46) are used for cutting the continuous film medium.

2. The metallized film capacitor film dielectric fillet cutting device according to claim 1, wherein the upper cutting head (45) comprises a cutting upper rod (451), a cutting connecting seat (452) and an upper cutting knife (453); the upper cutting rod (451) is connected with a slide block in the cutting guide rail slide block (43), the upper end of the upper cutting rod (451) is hinged with the lower end of the cutting connecting rod (44), and the lower end of the upper cutting rod (451) is connected with the cutting connecting base (452); the cutting connecting seat (452) is connected with the upper cutting knife (453);

the upper cutter (453) is an inclined cutter.

3. The metallized film capacitor film media radius cutoff device of claim 1, wherein the upper cutoff head (45) further comprises a platen guide post (454), a platen spring (455), and an upper platen (456); the fixed end of the pressure plate guide post (454) is connected with the cutting-off connecting seat (452), and the movable end of the pressure plate guide post (454) is connected with the upper pressure plate (456); two ends of the pressure plate spring (455) are respectively contacted with the upper surfaces of the cut-off connecting seat (452) and the upper pressure plate (456); the lower surface of the upper pressure plate (456) is in contact with or separated from the upper surface of the thin film medium.

4. The metallized film capacitor film dielectric radius cutoff device of claim 1, wherein the upper cutoff head (45) further comprises a cutoff guide post guide sleeve (457); guide posts in the cutting guide post guide sleeves (457) are fixed on a cutting machine frame, and the guide sleeves in the cutting guide post guide sleeves (457) are connected with a cutting connecting seat (452);

the film cutting mechanism (4) also comprises a film traction assembly (47); the film drawing assembly (47) comprises a drawing roller (471); the traction roller (471) is respectively contacted with the upper surface and the lower surface of the film medium, and the output end of the traction roller (471) is connected with the output end of the lower cutting head (46).

5. The metallized film capacitor film dielectric fillet cutting device according to claim 1, wherein the film fillet mechanism (3) comprises a fillet frame (31), a fillet driving component (32), a fillet upper die (33) and a fillet lower die (34); the fillet driving component (32) and the fillet lower die (34) are fixed on the fillet rack (31), and the output end of the fillet driving component (32) is connected with the fillet upper die (33); the output end of the round angle upper die (33) and the output end of the round angle lower die (34) are respectively contacted with the upper surface and the lower surface of the film medium, and the output end of the round angle upper die (33) is matched with the output end of the round angle lower die (34); the fillet driving assembly (32) is used for driving the fillet upper die (33) to move up and down; the round-corner upper die (33) and the round-corner lower die (34) are used for carrying out round-corner processing on the film medium;

the fillet upper die (33) comprises an upper die base (35) and an upper die head (36); the upper die head (36) comprises an electrode punching part (361), a first round part (362), a cutting groove part (363) and a second round part (364); the electrode punching parts (361) are aligned with the punching parts of the adjacent film dielectric electrode connecting sheets, and the electrode punching parts (361) are symmetrically distributed along the cutting groove parts (363); the first rounded portion (362) is aligned with a rounded portion at the front end of a rear thin film medium in the plurality of connected thin film media, and the second rounded portion (364) is aligned with a rounded portion at the rear end of a front thin film medium in the plurality of connected thin film media; the cutting groove part (363) is positioned between the first round part (362) and the second round part (364), the cutting groove part (363) is aligned with the cutting part, and the width of the cutting groove part (363) is the same as that of the cutting part of the upper cutting blade (453); the upper die base (35) is used for fixing the upper die head (36) and driving the upper die head (36) to move up and down.

6. A metallized film capacitor film dielectric radius cutting apparatus as claimed in claim 5, wherein the electrode blanking portion (361) is rectangular;

the upper die base (35) comprises an upper die base (351) and an upper die guide column (352); the upper die base (351) is respectively connected with the output end of the fillet driving component (32) and the upper die head (36); the fixed end of the upper die guide post (352) is fixed on the fillet frame (31), and the movable end of the upper die guide post (352) is connected with the upper die base (351);

the upper die base (35) further comprises an upper die pressure plate (353) and an upper pressure plate spring (354); the upper die pressing plate (353) is connected with the upper die base (351) in a sliding manner, and corresponding hole positions of the upper die pressing plate (353) are matched with the upper die head (36); two ends of the upper pressure plate spring (354) are respectively contacted with the lower surface of the upper die base (351) and the upper surface of the upper die pressure plate (353).

7. The apparatus of claim 5, wherein the lower die (34) comprises a lower die holder (341) and a lower die head (342); the lower die fixing seat (341) is fixed on the fillet frame (31), the lower die fixing seat (341) is connected with the lower die head (342), and the corresponding groove of the lower die head (342) is matched with the upper die head (36);

the fillet lower die (34) also comprises a waste collection box (343); the scrap collecting box (343) is fixed on the workbench, and the input end of the scrap collecting box (343) is connected with the output end of the corresponding groove of the lower die head (342).

8. The metallized film capacitor film dielectric radius cutoff apparatus as recited in claim 5, wherein the radius lower die (34) further comprises a film guide (344); the film guide sheet (344) is fixed on the round-angle frame (31), and the upper surface of the film guide sheet (344) is contacted with the lower surface of the film medium; the height of the upper surface of the film guide plate (344) is the same as that of the lower die head (342), and the output end of the film guide plate (344) is connected with the lower die head (342).

9. The metallized film capacitor film dielectric radius cutoff apparatus according to claim 5, wherein the film radius mechanism (3) further comprises a radius guide slider (37); the guide rail in the fillet guide rail sliding block (37) is fixed on the waste collection box (343), and the sliding block in the fillet guide rail sliding block (37) is connected with the bottom of the fillet rack (31).

10. A metallized film capacitor film dielectric fillet cutting method, which is characterized in that the method adopts a metallized film capacitor film dielectric fillet cutting device as claimed in claim 1, and the method comprises the following steps:

(I) rounding of the thin film medium: 1) the film forming device conveys the film medium to a fillet station; 2) the fillet driving component (32) acts to drive the upper die base (35) and the upper die head (36) to move downwards; 3) the upper die pressing plate (353) moves downwards to press the film medium tightly; the upper die head (36) moves downwards to be matched with a corresponding groove of the fillet lower die (34), and an electrode punching part (361) in the upper die head (36) cuts off punching parts of two adjacent thin film media at the same time; the first round part (362) and the second round part (364) respectively form the round part at the front end of the rear film medium and the round part at the rear end of the front film medium at the same time; the cutting groove part (363) cuts off the cutting parts of two adjacent thin film mediums simultaneously; 4) the waste collection box (343) collects the cut-off part of the film medium in the process of cutting off the round angle of the upper die head (36) to finish the process of processing the round angle of the film medium;

(II) cutting the film medium: 1) the film traction assembly (47) conveys the continuous film medium to the upper surface cutting station of the lower cutting head (46); 2) the cutting motor (41) rotates to drive the cutting crankshaft (42) connected with the cutting motor to rotate, and the eccentric crankshaft output end (422) drives the cutting connecting rod (44) to move downwards; 3) the cutting connecting rod (44) moves downwards to drive the upper cutting head (45) connected with the cutting connecting rod to move downwards along a guide rail in the cutting guide rail sliding block (43); 4) the upper pressing plate (456) moves downwards to press the film medium on the upper surface of the lower cutting head (46), and the upper cutting knife (453) moves downwards to cut the film medium below to finish the film medium cutting process.