CN212434487U - Material disc clamping and tensioning mechanism of film capacitor winding machine - Google Patents

Abstract

The utility model discloses a material dish clamping tight mechanism that rises of film capacitor winder belongs to film capacitor winding equipment field. The utility model discloses a thin film capacitor winder's material dish clamping tight mechanism that rises, including installing the clamping head on the base plate, the periphery of clamping head be equipped with a plurality of tight pieces that rise that are used for rising tight fixed material dish metal film circle that rise, the tight piece that rises in the periphery hoop interval distribution of clamping head, the surface that rises tight piece for with the circular arc tight face that rises of material dish metal film circle inner wall looks adaptation. The utility model discloses a tight face rises for the circular arc with material dish metallic membrane circle inner wall looks adaptation to the tight piece surface that rises for the tight piece that rises is wider with the contact surface of material dish metallic membrane circle, has effectively improved the stability of contact between each tight piece that rises and material dish metallic membrane circle inner wall, and then has guaranteed the stationarity of material dish when following the first high-speed rotation of clamping, makes the quality of coiling out film capacitor better.

Description

Material disc clamping and tensioning mechanism of film capacitor winding machine

Technical Field

The utility model relates to a film capacitor winder technical field, more specifically say, relate to a film capacitor winder's material dish clamping tight mechanism that rises.

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 capacitor is formed by depositing a metal on an insulating dielectric film such as polyester or polypropylene, and winding two or more layers of metallized films one upon the other to form a cylindrical capacitor. During the overlapping and winding process of two or more layers of metallized films, the requirement on the stability of the metal film disc during unwinding is very high.

In order to realize stable positioning and clamping of a material disc, the applicant has proposed patent application No. ZL201822230597.5 and a patent application entitled "material disc clamping and positioning mechanism of a film capacitor winding machine", as shown in fig. 1, 2 and 3, a clamping head 2 is mounted on a substrate 1 for positioning and clamping the material disc, and a driving mechanism at the rear of the substrate drives the clamping head 2 to rotate and unreel, a tensioning block 3 on the clamping head 2 for tensioning a metal film ring 4 of the material disc is in a strip-shaped structure, the outer surface of the strip-shaped tensioning block 3 is in a planar design, as shown in fig. 3, when the tensioning block 3 is tensioned outwards on the inner wall of the metal film ring 4 of the material disc, the actual tensioning contact point only has a tensioning point or line at the outer edge of the tensioning block 3 instead of surface-to-surface contact, so that the material disc is not tensioned on the clamping head 2 stably, thereby easily causing the material disc to be eccentric with the clamping head 2, unstable phenomena such as shaking and the like easily occur in the rotary unreeling process, and the manufacturing quality and the service life of the capacitor are influenced.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to overcome current film capacitor winder's material dish clamping mechanism has the fixed unstability that rises and easily arouses the not steady not enough of rotation, provides a film capacitor winder's material dish clamping tight mechanism that rises, adopts the technical scheme of the utility model, the surface that rises of tight piece be with the circular arc tight face that rises of material dish metal diaphragm inner wall looks adaptation for the tight piece that rises is wider with the contact surface of material dish metal diaphragm circle, has effectively improved the contact stability between each tight piece that rises and material dish metal diaphragm inner wall, and then has guaranteed the stationarity of material dish when following the chuck high-speed rotation, makes the quality of coiling out film capacitor better.

2. Technical scheme

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

the utility model discloses a thin film capacitor winder's material dish clamping tight mechanism that rises, including installing the clamping head on the base plate, the periphery of clamping head be equipped with a plurality of tight pieces that rise that are used for rising tight fixed material dish metal film circle that rise, the tight piece that rises in the periphery hoop interval distribution of clamping head, the surface that rises tight piece for with the circular arc tight face that rises of material dish metal film circle inner wall looks adaptation.

Furthermore, the outer diameter of the circular arc tensioning surface of the tensioning block is equal to or slightly larger than the inner diameter of the metal film ring of the material disc.

Furthermore, a notch is formed in the middle of the arc tensioning surface of the tensioning block along the axial direction of the clamping head.

Furthermore, a plurality of densely distributed stripes are arranged on the arc tensioning surface of the tensioning block.

Furthermore, the tensioning block is also provided with at least two countersunk mounting holes for connection.

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 material dish clamping and tensioning mechanism of film capacitor winder, it is including installing the clamping head on the base plate, the periphery of clamping head is equipped with a plurality of tight pieces that rise that are used for the tight fixed material dish metal diaphragm circle that rises, the tight piece that rises distributes to the interval in the periphery of clamping head hoop, the surface of tight piece that rises is the circular arc tight face that rises with material dish metal diaphragm circle inner wall adaptation, make the tight piece that rises and the contact surface of material dish metal diaphragm circle wider, effectively improved the contact stability between each tight piece that rises and material dish metal diaphragm circle inner wall, and then guaranteed the stationarity of material dish when the clamping head high-speed rotation along with the clamping head, make the quality of coiling out the film capacitor better;

(2) the utility model discloses a material dish of film capacitor winder presss from both sides tight mechanism that rises, the circular arc of its tight piece that rises tight face external diameter equals or slightly is greater than the internal diameter of material dish metal film circle, when the tight piece that rises outwards, can contact with the inner wall of material dish metal film circle with bigger contact surface and rise tightly, makes the material dish clamp more firm stable, and material dish clamp back and clamping head axiality are good, and rotatory unreel action is more reliable and more stable;

(3) the utility model discloses a material dish clamping and tensioning mechanism of film capacitor winder, the circular arc of its tight piece that rises is equipped with the notch together along clamping head axial direction in the middle of the tight face that rises, utilizes the notch design to avoid the tight piece that rises and only has the circular arc peak to contact with the material dish metal film circle when tight, has further guaranteed material dish clamping steadiness and clamping axiality;

(4) the utility model discloses a material dish clamping tight mechanism that rises of film capacitor winder, its circular arc that rises of tight piece rises and is equipped with the stripe of a plurality of intensive distributions on the tight face that rises, utilizes the stripe further to increase frictional force for the material dish is by the tight piece that rises and prop the back tightly, at the in-process of high-speed coiling still steady unreel, thereby has guaranteed the quality of metal film capacitor.

Drawings

FIG. 1 is a schematic structural diagram of a material tray clamping mechanism of a conventional film capacitor winding machine;

FIG. 2 is a schematic view of a material disc metal film ring on a clamping head in a material disc clamping mechanism of a conventional film capacitor winding machine;

FIG. 3 is a schematic view of a portion of the enlarged structure at K in FIG. 2;

fig. 4 is a schematic perspective view of a material tray clamping and tensioning mechanism of a film capacitor winding machine according to the present invention;

fig. 5 is a schematic side view of a material tray clamping and tensioning mechanism of a film capacitor winding machine according to the present invention;

fig. 6 is a schematic view of the clamping of the metal film ring of the material disc on the clamping head in the material disc clamping and tensioning mechanism of the film capacitor winding machine of the present invention;

fig. 7 is a schematic structural view of a tension block in a material tray clamping and tension mechanism of a film capacitor winding machine of the present invention.

The reference numerals in the schematic drawings illustrate:

1. a substrate; 2. assembling a chuck; 3. a tensioning block; 3-1, a notch; 3-2, arc tensioning surfaces; 3-3, stripes; 3-4, countersunk mounting holes; 4. a material disc metal film ring; 5. positioning the bracket; 6. and (7) positioning the plate.

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 and examples.

Examples

Referring to fig. 4 to 7, the material disc clamping and tensioning mechanism of the film capacitor winding machine of the embodiment includes a clamping head 2 installed on a substrate 1, a plurality of tensioning blocks 3 for tensioning and fixing a material disc metal film ring 4 are arranged on the periphery of the clamping head 2, the tensioning blocks 3 are circumferentially distributed at intervals on the periphery of the clamping head 2, and the outer surface of each tensioning block 3 is an arc tensioning surface 3-2 matched with the inner wall of the material disc metal film ring 4. The metal film ring 4 of the material disc is sleeved on the clamping head 2, and the material disc can be fixed or loosened on the clamping head 2 through the expansion block 3 which stretches inside and outside. The arc-shaped tensioning blocks 3 are adopted, so that the contact surface between the tensioning blocks 3 and the metal film ring of the material disc is wider, the contact stability between each tensioning block and the inner wall of the metal film ring of the material disc is effectively improved, the stability of the material disc rotating at high speed along with the clamping head is further ensured, and the quality of the coiled film capacitor is better.

In this embodiment, the outer diameter of the circular arc tensioning surface 3-2 of the tensioning block 3 is equal to or slightly larger than the inner diameter of the material disc metal film ring 4, and when the tensioning block 3 is tensioned outwards, the tensioning block can contact and tension the inner wall of the material disc metal film ring 4 with a larger contact surface, so that the material disc clamping is firmer and more stable, the coaxiality of the clamped material disc and the clamping head is good, and the rotary unreeling action is more stable and reliable. Referring to fig. 7, the overall structure of the tension block 3 is an arc-shaped rectangular block structure, a notch 3-1 is formed in the middle of an arc-shaped tension surface 3-2 of the tension block 3 along the axial direction of the clamping head 2, the notch 3-1 is designed to hollow out the intermediate material of the tension block 3, the notch 3-1 is designed to avoid the problem that the highest point of an arc contacts with the metal film ring 4 of the material disc when the tension block 3 is tensioned, and the clamping stability and the clamping coaxiality of the material disc are further ensured. In order to improve the clamping firmness of the clamping head 2 to the material disc, a plurality of densely distributed stripes 3-3 are arranged on the arc tensioning surface 3-2 of the tensioning block 3, and the stripes 3-3 are used for further increasing the friction force, so that the material disc is still stably unreeled in the high-speed reeling process after being tensioned by the tensioning block 3, and the quality of the metal film capacitor is ensured. The tensioning block 3 is fixed on a tensioning driving mechanism inside the clamping head 2 through screws, at least two countersunk mounting holes 3-4 for connection are further formed in the tensioning block 3, and the countersunk mounting holes 3-4 can be used for preventing the screws from being higher than the arc tensioning surface 3-2.

In this embodiment, the clamping head 2 has therein a tensioning driving mechanism and a rotation driving mechanism, the rotation driving mechanism is configured to drive the clamping head 2 to rotate, the tensioning block 3 is installed in the installation hole of the housing of the clamping head 2 and connected to the tensioning driving mechanism, and the tensioning driving mechanism drives the tensioning block 3 to move telescopically in the installation hole of the clamping head 2 to clamp the material disc. The specific structure and working principle of the tensioning driving mechanism and the rotating driving mechanism of the clamping head 2 are the same as those of patent No. ZL201822230597.5 and patent application entitled "a material disc clamping and positioning mechanism of a film capacitor winding machine", and the detailed description thereof is omitted here.

As shown in fig. 4 and 5, in order to facilitate the positioning of the material tray, a positioning plate 6 is further provided behind the chuck 2, the positioning plate 6 is preferably attached to the rear of the chuck 2 by a positioning bracket 5, the positioning plate 6 is fixed to the positioning bracket 5 by an adjusting screw, and the front and rear positions of the positioning plate 6 can be adjusted by the adjusting screw. The locating plate 6 is of an annular structure, the locating plate 6 and the clamping head 2 are coaxially arranged, and the axial installation position of the material disc can be located by abutting the front end face of the locating plate 6 against the end face of one side of the metal film disc of the material disc. In the embodiment, preferably, the inner diameter of the positioning plate 6 is 2-6 mm larger than the outer diameter of the metal film ring 4 of the material disc, and the radial width of the positioning plate 6 is 8-25 mm, so that the positioning plate 6 is closer to the metal film ring of the material disc, the end surface of the positioning plate 6 is in contact positioning with the end surface of the inner side of the metal film coil on the material disc, and the material disc is positioned more accurately; meanwhile, the contact area between the positioning plate 6 and the end face of the metal film coil is greatly reduced, the phenomenon that the material disc shakes back and forth when unreeling due to poor evenness of the end face of the metal film coil is avoided, the winding quality and the service life of the film capacitor are guaranteed, and the improved positioning mechanism of the material disc of the film capacitor winding machine is simple and reasonable in structural design, high in manufacturing and implementation feasibility and strong in practicability.

The utility model discloses a film capacitor winder's material dish clamping tight mechanism that rises, it is including installing the clamping head on the base plate, the periphery of clamping head is equipped with a plurality of tight pieces that rise that are used for rising that rise fixed material dish metal diaphragm enclosed, the tight piece that rises distributes at the periphery hoop interval of clamping head that rises, the surface that rises of tight piece is the circular arc tight face that rises with material dish metal diaphragm enclose inside wall adaptation, make the contact surface of tight piece and material dish metal diaphragm enclosed that rises wider, the contact stability between each tight piece that rises and material dish metal diaphragm enclose inside wall has effectively been improved, and then guaranteed the stationarity of material dish when following the high-speed rotation of clamping head, the quality that makes the coiling out film capacitor is better.

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 (5)

1. The utility model provides a material dish clamping and tensioning mechanism of film capacitor winder, is including installing clamping head (2) on base plate (1), the periphery of clamping head (2) be equipped with a plurality of tight pieces (3) that rise that are used for rising tight fixed material dish metal film circle (4), the circumference hoop interval distribution of tight piece (3) at clamping head (2), its characterized in that rise: the outer surface of the tensioning block (3) is an arc tensioning surface (3-2) matched with the inner wall of the material disc metal film ring (4).

2. The material disc clamping and tensioning mechanism of the film capacitor winding machine as claimed in claim 1, wherein: the outer diameter of the circular arc tensioning surface (3-2) of the tensioning block (3) is equal to or slightly larger than the inner diameter of the material disc metal film ring (4).

3. The material disc clamping and tensioning mechanism of the film capacitor winding machine as claimed in claim 1 or 2, wherein: the middle of the arc tensioning surface (3-2) of the tensioning block (3) is provided with a notch (3-1) along the axial direction of the clamping head (2).

4. The material disc clamping and tensioning mechanism of the film capacitor winding machine as claimed in claim 3, wherein: the arc tensioning surface (3-2) of the tensioning block (3) is provided with a plurality of densely distributed stripes (3-3).

5. The material disc clamping and tensioning mechanism of the film capacitor winding machine as claimed in claim 4, wherein: the tensioning block (3) is also provided with at least two countersunk head mounting holes (3-4) for connection.

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