CN212062211U - Film capacitor winding core fold-preventing stretching reaming pre-flattening mechanism - Google Patents

Abstract

The utility model discloses a tensile reaming pre-compaction flat mechanism of fold is prevented to film capacitor coiling core belongs to film capacitor preparation equipment field. The utility model discloses a tensile reaming pre-compaction flat mechanism of fold is prevented to film capacitor winding core, including two parallel arrangement's reaming axle and the actuating mechanism who is used for driving an at least reaming axle so that two reaming axle relative translation motion, an at least reaming axle axial free rotation sets up for axial self-adaptation when two reaming axles are tensile to be strutted the winding core rotates. The utility model discloses with reaming axle axial free rotation setting, when the electric capacity core reaming different to external diameter variation in size and weight is tensile, the reaming axle is unanimous basically to the upper and lower friction effort of coiling core inner circle, compares with the irrotational mode of reaming axle, and coiling core is folding and fold phenomenon significantly reduces, and the plane state of upper and lower both sides also more tends to unanimity, can keep electric capacity core inner circle to be flat state, guarantees the flattening quality of electric capacity core.

Description

Film capacitor winding core fold-preventing stretching reaming pre-flattening mechanism

Technical Field

The utility model relates to a film capacitor processingequipment, more specifically say, relate to a film capacitor coils core and prevents tensile reaming pre-compaction flat mechanism of fold.

Background

The metallized film capacitor has high insulation resistance, small capacitance loss, reliability, safety and explosion resistance, and is widely used in the fields of electronics, communication, electric power and the like.

The metallized film is the main material for making metallized film capacitor, the base material of said material is organic film, such as polyester and polypropylene, etc., and the metal is plated on the medium base material by means of vacuum coating. The capacitor is formed by winding two or more metallized films and a plain film, and the metal plating layers of the metallized films are very thin and are very easy to oxidize. If wrinkles are generated during the manufacturing process and air or moisture is contained in the wrinkles, the metal plating layer therein is easily ionized or oxidized, thereby degrading the characteristics of the capacitor and reducing the attenuation or failure of the capacitor capacity. Especially for the capacitor applied to the DC supporting occasions such as new energy automobiles, electrified locomotives, solar power generation and the like, if the capacitor fails, huge loss is brought.

In the manufacture of such capacitors, winding is an important manufacturing step. Most of such dc support capacitors are wound around a circular winding core, which is drawn out to form a circular ring shape, and then pressed into a flat shape, followed by a subsequent process. When the capacitor is pressed to a flat shape, the capacitor is very easily folded or wrinkled at a plane, and once the folding or more wrinkling is generated, it is difficult to achieve a desired quality and life of the capacitor.

When larger capacitors are wound using larger winding cores, the folding and wrinkling phenomena are more pronounced due to the greater deformation when flattened. Therefore, as shown in fig. 1, the latest process can insert two reaming shafts 1 into the inner hole of the winding core 100 before the winding core 100 is flattened, draw it to both sides, and draw the round hole of the winding core 100 into an oblong shape so that the plane of the capacitor is substantially formed. In this way, folding phenomena can be eliminated and wrinkles reduced, thereby improving product quality and life. However, when the hole is enlarged, a large frictional force is generated between the hole enlarging shaft 1 and the inner hole of the winding core 100, and the frictional force f on the upper side is greater than the frictional force f1 on the lower side due to the gravity, so that the planes formed on the upper and lower sides of the capacitor are not completely the same, the wrinkles 101 are still formed due to the stretching of the hole enlarging shaft 1, and the film may be subjected to a large frictional force and then may be deformed by stretching.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to overcome that there is inboard fold and film deformation impaired etc. not enough when current film capacitor coils the core and stretches pre-flattens, provide a film capacitor coils the core and prevents that the tensile reaming of fold is flattening mechanism in advance, adopt the technical scheme of the utility model, with at least one reaming axle axial free rotation setting to axial self-adaptation rotates when two reaming axles stretch to strut the coiling core, when the electric capacity core reaming of external diameter variation in size and weight difference is tensile, the reaming axle is unanimous basically to the upper and lower friction effort of coiling core inner circle, compares with the irrotational mode of reaming axle, coiling core folding and fold phenomenon significantly reduce, and the plane state of upper and lower both sides also more tends to unanimity, can keep electric capacity core inner circle to be flat state, guarantees the flattening quality of electric capacity core.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a tensile reaming pre-compaction flat mechanism of fold is prevented to film capacitor winding core, including two parallel arrangement's reaming axle and be used for driving an at least reaming axle so that two reaming axle actuating mechanism of relative translation motion, at least one reaming axle axial free rotation setting for axial self-adaptation when two reaming axles are tensile to be strutted winding core rotates.

Furthermore, the two reaming shafts are axially and freely rotatably arranged, and the driving mechanism is in transmission connection with the two reaming shafts respectively and is used for driving the two reaming shafts to synchronously move towards or away from each other.

Furthermore, the driving mechanism comprises an active driving mechanism and a reaming auxiliary mechanism, the active driving mechanism comprises a front-back sliding mechanism and a left-right sliding mechanism arranged on the front-back sliding mechanism, the left-right sliding mechanism comprises two groups of sliding block seats arranged on a left sliding rail and a right sliding rail and a reaming driving assembly used for driving the two groups of sliding block seats to move in the opposite direction or in the opposite direction, one end of each of the two reaming shafts is rotatably arranged on the corresponding sliding block seat through a front bearing seat, and the axial direction of each reaming shaft is perpendicular to the sliding direction of the corresponding sliding block seat; the reaming auxiliary mechanism comprises two groups of slide rail connecting seats arranged on auxiliary guide slide rails and an auxiliary driving assembly used for driving the two groups of slide rail connecting seats to move in the opposite direction or in the opposite direction, a rear bearing seat is respectively arranged on the two groups of slide rail connecting seats, a positioning sleeve axially opposite to the corresponding reaming shaft is rotatably arranged on each rear bearing seat through a bearing, and the rotating axis of the positioning sleeve is vertical to the sliding direction of the slide rail connecting seats; the two reaming shafts can be driven by the front and rear sliding mechanisms to be inserted into the corresponding positioning sleeves.

Furthermore, positioning mechanisms capable of being in butt joint are arranged between the two groups of sliding block seats and the corresponding sliding rail connecting seats or the corresponding rear bearing seats.

Furthermore, the positioning mechanism comprises a positioning pin and a positioning pin hole, the positioning pin is arranged on the sliding block seat through a positioning pin support, the positioning pin hole is arranged on the sliding rail connecting seat or the rear bearing seat, and the positioning pin can be inserted into the corresponding positioning pin hole under the driving of the front and rear sliding mechanisms.

Furthermore, the front and back sliding mechanism comprises a base, a front and back sliding seat and a front and back telescopic driver, the front and back sliding seat is slidably mounted on the base through a front and back sliding rail, the front and back telescopic driver is mounted between the base and the front and back sliding seat, and the reaming driving assembly is mounted on the front and back sliding seat.

Further, reaming drive assembly include driving motor, driving pulley, driven pulley and hold-in range, driving motor be fixed in through the motor mount pad around on the seat that slides, driving pulley install on driving motor's motor shaft, driven pulley pass through the band pulley erection bearing frame and install on the seat that slides around, the hold-in range tensioning between driving pulley and driven pulley, two sets of the slider seat be connected through the opposite translation section of direction of movement of connecting block and hold-in range respectively.

Furthermore, the driving motor is a servo motor.

Furthermore, a photoelectric sensor is arranged on the front and back sliding seat, and a sensor detection sheet matched with the photoelectric sensor is arranged on the synchronous belt.

Furthermore, the auxiliary driving assembly comprises an auxiliary driving cylinder, a stopping cylinder, a friction stopping block and a friction strip, the two groups of slide rail connecting seats are respectively connected with piston rods of the auxiliary driving cylinder, the auxiliary driving cylinder drives the slide rail connecting seats on the corresponding side to horizontally slide on the auxiliary guide slide rail, the friction strip is arranged on the upper side or the lower side of the slide rail connecting seats, the stopping cylinder is arranged opposite to the friction strip, the friction stopping block is arranged on the piston rod of the stopping cylinder, and the friction stopping block can be in contact fit with the friction strip under the action of the stopping cylinder to provide sliding damping of the slide rail connecting seats.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:

(1) the utility model discloses a tensile reaming pre-compaction flat mechanism of fold is prevented to film capacitor winding core, it includes two parallel arrangement's reaming axle and is used for driving an at least reaming axle so that two reaming axle actuating mechanism of relative translation motion, an at least reaming axle axial free rotation sets up, axial self-adaptation rotation when being used for stretching out the winding core at two reaming axles, adopt the reaming axle of above-mentioned rotating-structure, when stretching out to the electric capacity core reaming that external diameter size and weight are different, the up-and-down friction effort of reaming axle to winding core inner circle is basically unanimous, compare with the irrotational mode of reaming axle, winding core folding and fold phenomenon greatly reduce, the plane state of upper and lower both sides also more tends to unanimity, can keep electric capacity core inner circle to be flat state, guarantee the flattening quality of electric capacity core; the problem that the inner ring film is stretched, deformed and damaged due to overlarge local friction force is solved;

(2) the utility model discloses a tensile reaming pre-compaction flat mechanism of fold is prevented to film capacitor winding core, its two reaming axles equal axial free rotation sets up, and actuating mechanism is connected with two reaming axle transmissions respectively, in order to drive two reaming axles synchronous phase or back-to-back motion, utilize two pivoted reaming axles synchronous phase or back-to-back motion to carry out the tensile reaming to the winding core, form pre-compaction flat structure, the action of tensile reaming is more symmetrical steady, further improved the quality that film capacitor flattens;

(3) the utility model discloses a tensile reaming pre-compaction flat mechanism of fold is prevented to film capacitor winding core, its actuating mechanism includes active drive mechanism and reaming complementary unit, the one end of two reaming axles is installed on the sliding block seat that the active drive mechanism corresponds through the front bearing frame rotation respectively, all install a position sleeve axially relative with corresponding reaming axle through the bearing rotation on every rear bearing frame of reaming complementary unit, two reaming axles can insert in the corresponding position sleeve under the drive of front and back sliding mechanism, utilize active drive mechanism and reaming complementary unit to keep two reaming axles parallel motion, thereby guaranteed the reaming of winding core is stretched and is leveled;

(4) the utility model discloses a tensile reaming pre-compaction flat mechanism of fold is prevented to film capacitor winding core, still be equipped with the positioning mechanism that can dock between its two sets of sliding block seats and corresponding slide rail connecting seat or the rear bearing frame, utilize positioning mechanism can further guarantee the stable butt joint of two reaming axles and position sleeve, make the both ends stretching motion of two reaming axles more synchronous, further guaranteed the parallel stretching motion of two reaming axles;

(5) the utility model discloses a tensile reaming pre-compaction flat mechanism of fold is prevented to film capacitor winding core, its positioning mechanism includes locating pin and locating pin hole, and the locating pin passes through the locating pin support mounting on the take-up housing, and the locating pin hole is located on slide rail connecting seat or the rear axle bearing, and the locating pin can insert corresponding locating pin downthehole under the front and back sliding mechanism drives, utilizes locating pin and locating pin hole to realize the butt joint positioning motion, and simple structure, location are reliable and stable;

(6) the utility model discloses a film capacitor winding core prevent fold stretch reaming pre-compaction flat mechanism, its front and back slide mechanism include base, front and back slide seat and front and back flexible driver, drive front and back slide seat by front and back flexible driver and slide along front and back slide rail, front and back flexible motion stability is good;

(7) the utility model discloses a tensile reaming pre-compaction flat mechanism of fold is prevented to film capacitor winding core, its reaming drive assembly includes driving motor, driving pulley, driven pulley and hold-in range, and two sets of sliding block seats are connected with the translation section that the moving direction of hold-in range is opposite through the connecting block respectively, utilize a set of hold-in range mechanism can drive two reaming axles synchronous phase to each other or back-to-back motion, simple structure is compact, reaming axle motion synchronism is good;

(8) the utility model discloses a tensile reaming pre-compaction flat mechanism of fold is prevented to film capacitor winding core, its driving motor is servo motor, is convenient for the control of reaming axle tensile position and moment in the reaming tensile process, has guaranteed the tensile reaming pre-compaction stability of winding core, has improved the quality of winding core reaming pre-compaction;

(9) the utility model discloses a tensile reaming pre-compaction flat mechanism of fold is prevented to film capacitor winding core, its auxiliary drive subassembly utilize the stop cylinder to make friction stop block and friction strip combine together including auxiliary drive actuating cylinder, stop cylinder, friction stop block and friction strip, provide the sliding damping of auxiliary drive actuating cylinder drive slide rail connecting seat for auxiliary drive subassembly drives two reaming axle motions more steady.

Drawings

FIG. 1 is a schematic diagram of a stretching, reaming and pre-flattening of a film capacitor winding core with a non-rotating reamer spindle;

FIG. 2 is a schematic diagram of a film capacitor winding core wrinkle-preventing stretching, reaming, pre-pressing and flattening mechanism according to the present invention;

fig. 3 is a schematic structural view of a film capacitor winding core wrinkle-preventing stretching, reaming, pre-pressing and flattening mechanism of the present invention;

fig. 4 is the utility model discloses a tensile reaming state sketch map of reaming flattening mechanism in advance of fold is prevented to film capacitor winding core.

The reference numerals in the schematic drawings illustrate:

100. winding the core; 101. folding; 1. a reaming shaft; 1-1, a front bearing seat; 1-2, a stop ring; 1-3, a rear bearing seat; 1-4, a positioning sleeve; 2. an active drive mechanism; 2-1, a base; 2-2, a front and back sliding seat; 2-3, front and rear slide rails; 2-4, driving a motor; 2-5, a driving belt wheel; 2-6, a driven belt wheel; 2-7, mounting a bearing seat on the belt wheel; 2-8, synchronous belts; 2-9, pressing rolls; 2-10, connecting blocks; 2-11, a sliding block seat; 2-12, left and right slide rails; 2-13, a photoelectric sensor; 2-14, sensor detection sheet; 2-15, positioning pin support; 2-16, positioning pin base; 3. a reaming auxiliary mechanism; 3-1, auxiliary driving of the cylinder; 3-2, a slide rail connecting seat; 3-3, an auxiliary guide sliding rail; 3-4, a stopping cylinder; 3-5, friction stop block; 3-6, rubbing strips.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings.

With reference to fig. 2, the utility model discloses a tensile reaming pre-compaction flat mechanism of fold is prevented to film capacitor winding core, including two parallel arrangement's reaming axle 1 with be used for driving an at least reaming axle 1 so that the actuating mechanism of two reaming axle 1 relative translation motion, the setting of an at least reaming axle 1 axial free rotation for axial self-adaptation when two reaming axles 1 are tensile to be strutted winding core 100 rotates. Thus, when the two reaming shafts 1 perform reaming and stretching on the winding core 100, at least one reaming shaft 1 can rotate along with the winding core, so that equal stretching friction force can be formed on the upper side and the lower side of the inner ring of the winding core 100; and the problem that the inner ring film is stretched, deformed and damaged due to overlarge local friction force is avoided.

The utility model discloses in, arbitrary axial free rotation sets up or two equal axial free rotation sets up all in two reaming axle 1, and when arbitrary axial free rotation sets up in two reaming axle 1, the upper and lower inner wall frictional force of the tensile winding core 100 of two reaming axle 1 counterbores is balanced by pivoted reaming axle 1 to the upside and the downside frictional force of winding core 100 inner circle have been kept unanimous basically. In order to ensure the symmetric stability of the stretching and reaming actions, a preferred mode is to adopt a structural form that two reaming shafts 1 are both freely and rotatably arranged in the axial direction, as shown in fig. 2, the two reaming shafts 1 are both freely and rotatably arranged in the axial direction, and a driving mechanism is respectively in transmission connection with the two reaming shafts 1 for driving the two reaming shafts 1 to synchronously move in the opposite direction or in the opposite direction, during the reaming and stretching process of the inner ring of the winding core 100, the two reaming shafts 1 synchronously move in the parallel opposite direction, during the stretching process, the two reaming shafts 1 rotate along with the rotation due to the inconsistent up-down friction force of the inner ring of the winding core 100, so as to realize the function of self-adapting stretching friction force change, and equal friction action is formed on the upper side and the lower side of the inner ring of the winding core 100, i.e. f1, wherein f is the friction force of the upper side of the inner ring of the reaming shaft 1 and the inner ring of the winding, the stretching and reaming actions are ensured to be more symmetrical and stable, and the subsequent flattening quality of the film capacitor is further improved.

The present invention will be further described with reference to the following embodiments, which are provided as examples of the two reamer shafts 1 rotating together.

[ examples ]

As shown in fig. 3 and fig. 4, the anti-wrinkling stretching, reaming and pre-flattening mechanism for a film capacitor winding core of the present embodiment includes two parallel reaming shafts 1 and a driving mechanism for driving the two reaming shafts 1 to make the two reaming shafts 1 perform a relative translational motion, and the two reaming shafts 1 are axially freely and rotatably disposed to rotate in an axial direction, so as to rotate in an axial direction in a self-adaptive manner when the two reaming shafts 1 stretch and stretch the winding core 100. The driving mechanism comprises a driving mechanism 2 and a reaming auxiliary mechanism 3, the driving mechanism 2 comprises a front-back sliding mechanism and a left-right sliding mechanism arranged on the front-back sliding mechanism, the front-back sliding mechanism is used for driving the left-right sliding mechanism to move back and forth, and the front-back sliding mechanism is used for enabling a winding core 100 formed by winding to be arranged on the two reaming shafts 1; the left-right sliding mechanism comprises two groups of sliding block seats 2-11 arranged on left-right sliding rails 2-12 and a reaming driving assembly used for driving the two groups of sliding block seats 2-11 to move in the opposite direction or in the opposite direction, the two groups of sliding block seats 2-11 can slide freely on the left-right sliding rails 2-12 under the driving of the reaming driving assembly, one ends of two reaming shafts 1 are respectively rotatably arranged on the corresponding sliding block seats 2-11 through front bearing seats 1-1, the reaming shafts 1 are connected with the front bearing seats 1-1 through bearings, so that the reaming shafts 1 can rotate freely, the axial direction of the reaming shafts 1 is perpendicular to the sliding direction of the sliding block seats 2-11, and the reaming driving assembly can drive the two reaming shafts 1 to move in the opposite direction or in the opposite direction. The auxiliary reaming mechanism 3 comprises two groups of slide rail connecting seats 3-2 arranged on an auxiliary guide slide rail 3-3 and an auxiliary driving assembly for driving the two groups of slide rail connecting seats 3-2 to move in the opposite direction or in the opposite direction, the auxiliary driving assembly can drive the two groups of slide rail connecting seats 3-2 to freely slide on the auxiliary guide slide rail 3-3, the two groups of slide rail connecting seats 3-2 are respectively provided with a rear bearing seat 1-3, each rear bearing seat 1-3 is rotatably provided with a positioning sleeve 1-4 axially opposite to the corresponding reaming shaft 1 through a bearing, the positioning sleeves 1-4 can freely rotate axially on the rear bearing seats 1-3, the rotating axis of the positioning sleeves 1-4 is vertical to the sliding direction of the slide rail connecting seats 3-2, the two reaming shafts 1 can be inserted into the corresponding positioning sleeves 1-4 under the driving of the front and rear sliding mechanisms, the cantilever ends of the two reaming shafts 1 are fixed through the positioning sleeves 1-4, and the auxiliary driving assembly can assist the two reaming shafts 1 to move in the opposite direction or in the opposite direction, so that stable and synchronous movement of the two ends of the two reaming shafts 1 is guaranteed. In order to facilitate the stable connection of the reaming shaft 1 and the positioning sleeves 1-4, a stop ring 1-2 is arranged between the reaming shaft 1 and the front bearing seat 1-1, and a stop ring 1-2 is arranged between the positioning sleeve 1-4 and the rear bearing seat 1-3, so that the reaming shaft 1 and the positioning sleeves 1-4 are prevented from axially moving.

As shown in fig. 3 and 4, in order to further ensure the parallel stretching movement of the two reaming shafts 1, positioning mechanisms capable of being butted are arranged between the two sets of slide block seats 2-11 and the corresponding slide rail connecting seats 3-2 or the rear bearing seats 1-3, and the positioning mechanisms can further ensure the stable butting of the two reaming shafts 1 and the positioning sleeves 1-4, so that the stretching movement of the two ends of the two reaming shafts 1 is more synchronous. Specifically, in the embodiment, the positioning mechanism comprises a positioning pin and a positioning pin hole, the positioning pin is mounted on the slider seats 2-11 through positioning pin supports 2-15, one ends of the positioning pin supports 2-15 are fixed on the slider seats 2-11, the other ends of the positioning pin supports 2-15 are provided with positioning pin seats 2-16, the positioning pin is mounted on the positioning pin seats 2-16, the positioning pin hole is formed in the slide rail connecting seat 3-2 or the rear bearing seat 1-3, the positioning pin can be inserted into the corresponding positioning pin hole under the driving of the front and rear sliding mechanisms, and the butt joint positioning movement is realized by using the positioning pin and the positioning pin hole.

In this embodiment, the front-back sliding mechanism includes a base 2-1, a front-back sliding seat 2-2, and a front-back telescopic driver, the front-back sliding seat 2-2 is slidably mounted on the base 2-1 through a front-back sliding rail 2-3, the front-back telescopic driver is mounted between the base 2-1 and the front-back sliding seat 2-2, and the reaming driving assembly is mounted on the front-back sliding seat 2-2. The front and back telescopic drivers can adopt air cylinders, and the front and back telescopic drivers are used for driving the front and back sliding seats 2-2 to slide back and forth along the front and back sliding rails 2-3, so that the front and back telescopic motion stability is good. When the winding device works, the front telescopic driver and the rear telescopic driver drive the reaming driving assemblies on the front sliding seat 2-2 to move backwards to separate the two reaming shafts 1 from the positioning sleeves 1-4, the wound winding core 100 is arranged on the two reaming shafts 1, then the front telescopic driver and the rear telescopic driver drive the two reaming shafts 1 to be inserted into the positioning sleeves 1-4, meanwhile, the positioning mechanisms on the two sides of the two reaming shafts 1 are in butt joint positioning, then the reaming driving assemblies and the auxiliary driving assemblies drive the two reaming shafts 1 to move back and forth to ream and stretch the winding core 100, and the annular winding core 100 is stretched into a flat prepressing state. The reaming driving assembly comprises a driving motor 2-4, a driving pulley 2-5, a driven pulley 2-6 and a synchronous belt 2-8, wherein the driving motor 2-4 is fixed on a front sliding seat 2-2 and a rear sliding seat 2-2 through a motor mounting seat, the driving pulley 2-5 is mounted on a motor shaft of the driving motor 2-4, the driven pulley 2-6 is mounted on the front sliding seat 2-2 and the rear sliding seat 2-2 through a pulley mounting bearing seat 2-7, the synchronous belt 2-8 is tensioned between the driving pulley 2-5 and the driven pulley 2-6, and the two groups of sliding block seats 2-11 are respectively connected with a translation section with the opposite moving direction of the synchronous belt 2-8 through connecting blocks 2-10. In order to make the structure more compact, a group of driven pulleys 2-6 are respectively arranged on the left side and the right side of a front sliding seat 2-2 and a rear sliding seat 2-2 through bearing seats 2-7, a driving pulley 2-5 is positioned above the driven pulley 2-6 on one side, a synchronous belt 2-8 is arranged on the driving pulley 2-5 and the driven pulley 2-6, and meanwhile, in order to ensure that the up-and-down translation sections of the synchronous belt 2-8 are parallel to each other and are consistent with the moving direction of two groups of sliding block seats 2-11, a press roller 2-9 for pressing the synchronous belt 2-8 is arranged on one side of the driving pulley 2-5, so that the up-and-down translation sections of the synchronous belt 2-8 are ensured to move stably and the two reaming shafts 1 can be driven to move synchronously and oppositely or reversely by, the hole enlarging shaft has good movement synchronism. In this embodiment, the driving motors 2 to 4 preferably adopt servo motors, which facilitates control of the stretching position and the moment of the reaming shaft 1 during the reaming and stretching process, ensures the stability of the winding core stretching, reaming and pre-flattening, and improves the quality of the winding core reaming and pre-flattening. In order to ensure the reset accuracy of the driving motor 2-4 for controlling the reaming shafts 1, photoelectric sensors 2-13 are further arranged on the front and rear sliding seats 2-2, sensor detection sheets 2-14 matched with the photoelectric sensors 2-13 are arranged on the synchronous belts 2-8, and the reset positions of the driving motor 2-4 are controlled by using switching signals of the sensor detection sheets 2-14 and the photoelectric sensors 2-13, so that the reset accuracy of the two reaming shafts 1 is improved.

Referring to fig. 3 and 4, in the present embodiment, the auxiliary driving assembly includes an auxiliary driving cylinder 3-1, a stopping cylinder 3-4, a friction stopping block 3-5 and a friction bar 3-6, the auxiliary driving cylinder 3-1 is mounted on a device substrate (not shown), two sets of slide rail connecting bases 3-2 are respectively connected to piston rods of one set of auxiliary driving cylinder 3-1, the auxiliary driving cylinder 3-1 drives the corresponding slide rail connecting base 3-2 to horizontally slide on the auxiliary guiding slide rail 3-3, the friction bar 3-6 is disposed on the upper side or the lower side of the slide rail connecting base 3-2, the stopping cylinder 3-4 is mounted opposite to the friction bar 3-6, the stopping cylinder 3-4 is also mounted on the device substrate, the friction stopping block 3-5 is mounted on the piston rod of the stopping cylinder 3-4, the friction stop block 3-5 can be in contact fit with the friction strip 3-6 under the action of the stop cylinder 3-4 to provide sliding damping for the slide rail connecting seat 3-2, so that the auxiliary driving assembly drives the two reaming shafts 1 to move more stably, and the phenomenon that the auxiliary driving cylinder 3-1 moves fast and is asynchronous with the reaming driving assembly is effectively avoided. The friction bars 3-6 and the friction stoppers 3-5 are preferably made of rubber.

The utility model discloses a tensile reaming pre-compaction flat mechanism of fold is prevented to film capacitor winding core, at metal film winding in-process, the electric capacity core of coiling out is carried to certain position by conveying mechanism, and the reaming axle stretches into electric capacity core inner circle and stretches toward both sides, and the reaming axle is installed in the bearing frame, and the reaming axle can free rotation, when the electric capacity core reaming different to external diameter variation in size and weight is tensile, still keeps electric capacity core inner circle to be flat state to can guarantee effectual flattening electric capacity core. Through actual use, after the mode that uses rotatory reaming axle flattens, folding and fold phenomenon reduce greatly than the mode that the reaming axle is not rotatory, and the plane state of upper and lower both sides also more tends to unanimity.

It is thus clear that the utility model has the following advantages:

1. and the rotary reaming shaft is used for reaming and stretching the inner ring of the capacitor core, so that the inner ring of the capacitor core is in a flat state, the asymmetric stretching phenomenon of an inner hole is reduced, and the flattening quality of the capacitor core is ensured.

2. The problem that the inner ring film is stretched, deformed and damaged due to overlarge local friction force is solved.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without creatively designing the similar structural modes and embodiments to the technical solutions, they should belong to the protection scope of the present invention.

Claims (10)

1. The utility model provides a membrane electric capacity winding core prevents that fold stretches pre-compaction flat mechanism of reaming, includes two parallel arrangement's reaming axle (1) and is used for driving at least one reaming axle (1) so that two reaming axle (1) relative translational motion's actuating mechanism, its characterized in that: at least one reaming shaft (1) is axially and freely rotatably arranged and is used for axially and adaptively rotating when the two reaming shafts (1) stretch and unfold the winding core (100).

2. The film capacitor winding core wrinkle-preventing stretching, reaming and pre-flattening mechanism according to claim 1, characterized in that: the two reaming shafts (1) are axially and freely rotatably arranged, and the driving mechanism is in transmission connection with the two reaming shafts (1) respectively and is used for driving the two reaming shafts (1) to synchronously move in the opposite directions or in the opposite directions.

3. The film capacitor winding core wrinkle-preventing stretching, reaming and pre-flattening mechanism according to claim 2, characterized in that: the driving mechanism comprises an active driving mechanism (2) and a reaming auxiliary mechanism (3), the active driving mechanism (2) comprises a front sliding mechanism and a rear sliding mechanism and a left sliding mechanism and a right sliding mechanism which are arranged on the front sliding mechanism and the rear sliding mechanism, the left sliding mechanism and the right sliding mechanism comprise two groups of sliding block seats (2-11) which are arranged on a left sliding rail (2-12) and a right sliding mechanism and a reaming driving assembly which is used for driving the two groups of sliding block seats (2-11) to move in the opposite direction or in the opposite direction, one end of each of two reaming shafts (1) is rotatably arranged on the corresponding sliding block seat (2-11) through a front bearing seat (1-1), and the axial direction of each reaming shaft (1) is vertical to the sliding direction of the corresponding sliding block seat (2-11; the reaming auxiliary mechanism (3) comprises two groups of slide rail connecting seats (3-2) arranged on auxiliary guide slide rails (3-3) and auxiliary driving components for driving the two groups of slide rail connecting seats (3-2) to move towards or away from each other, a rear bearing seat (1-3) is respectively arranged on the two groups of slide rail connecting seats (3-2), each rear bearing seat (1-3) is rotatably provided with a positioning sleeve (1-4) axially opposite to the corresponding reaming shaft (1) through a bearing, and the rotating axis of the positioning sleeve (1-4) is vertical to the sliding direction of the slide rail connecting seats (3-2); the two reaming shafts (1) can be driven by the front and rear sliding mechanisms to be inserted into the corresponding positioning sleeves (1-4).

4. The film capacitor winding core wrinkle-preventing stretching, reaming and pre-flattening mechanism according to claim 3, characterized in that: and positioning mechanisms capable of being butted are arranged between the two groups of sliding block seats (2-11) and the corresponding sliding rail connecting seats (3-2) or the rear bearing seats (1-3).

5. The film capacitor winding core wrinkle-preventing stretching, reaming and pre-flattening mechanism according to claim 4, characterized in that: the positioning mechanism comprises positioning pins and positioning pin holes, the positioning pins are arranged on the sliding block seats (2-11) through positioning pin supports (2-15), the positioning pin holes are formed in the sliding rail connecting seats (3-2) or the rear bearing seats (1-3), and the positioning pins can be inserted into the corresponding positioning pin holes under the driving of the front and rear sliding mechanisms.

6. The film capacitor winding core wrinkle-proof stretching, hole expanding and pre-flattening mechanism as claimed in claim 3, 4 or 5, wherein: the front-back sliding mechanism comprises a base (2-1), a front-back sliding seat (2-2) and a front-back telescopic driver, wherein the front-back sliding seat (2-2) is slidably mounted on the base (2-1) through a front-back sliding rail (2-3), the front-back telescopic driver is mounted between the base (2-1) and the front-back sliding seat (2-2), and the reaming driving assembly is mounted on the front-back sliding seat (2-2).

7. The film capacitor winding core wrinkle-preventing stretching, reaming and pre-flattening mechanism according to claim 6, characterized in that: the reaming driving component comprises a driving motor (2-4), a driving pulley (2-5), a driven pulley (2-6) and a synchronous belt (2-8), the driving motor (2-4) is fixed on the front and back sliding seat (2-2) through a motor mounting seat, the driving belt wheels (2-5) are arranged on motor shafts of the driving motors (2-4), the driven belt wheels (2-6) are arranged on the front and back sliding seats (2-2) through belt wheel mounting bearing seats (2-7), the synchronous belt (2-8) is tensioned between the driving belt wheel (2-5) and the driven belt wheel (2-6), and the two groups of slide block seats (2-11) are respectively connected with the translation sections of the synchronous belt (2-8) in opposite moving directions through connecting blocks (2-10).

8. The film capacitor winding core wrinkle-preventing stretching, reaming and pre-flattening mechanism according to claim 7, characterized in that: the driving motors (2-4) are servo motors.

9. The film capacitor winding core wrinkle-preventing stretching, reaming and pre-flattening mechanism according to claim 8, characterized in that: the front and back sliding seat (2-2) is also provided with a photoelectric sensor (2-13), and the synchronous belt (2-8) is provided with a sensor detection sheet (2-14) matched with the photoelectric sensor (2-13).

10. The film capacitor winding core wrinkle-preventing stretching, reaming and pre-flattening mechanism according to claim 3, characterized in that: the auxiliary driving assembly comprises auxiliary driving cylinders (3-1), stopping cylinders (3-4), friction stopping blocks (3-5) and friction strips (3-6), two groups of slide rail connecting seats (3-2) are respectively connected with piston rods of one group of auxiliary driving cylinders (3-1), the auxiliary driving cylinders (3-1) drive the slide rail connecting seats (3-2) on the corresponding sides to horizontally slide on the auxiliary guide slide rails (3-3), the friction strips (3-6) are arranged on the upper sides or the lower sides of the slide rail connecting seats (3-2), the stopping cylinders (3-4) are arranged opposite to the friction strips (3-6), the friction stopping blocks (3-5) are arranged on the piston rods of the stopping cylinders (3-4), and the friction stopping blocks (3-5) can be acted by the stopping cylinders (3-4) to cooperate with the stopping cylinders (3-4) The friction strips (3-6) are in contact fit to provide sliding damping for the sliding rail connecting seat (3-2).

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