CN204720751U - A kind of commutator screening mould - Google Patents

Abstract

The utility model relates to a commutator slice die, the slice rack is in the shape of a cylinder, a cylindrical groove is opened on one end surface, and a cylindrical block is arranged in the center, and a plastic core is sleeved on the cylindrical block. The plastic core is in the shape of a ring, and several isosceles trapezoidal grooves are evenly arranged on its outer ring, and several commutator segments are evenly installed in the cylindrical grooves, and the commutator segments with small cross-sections One end is inserted into the isosceles trapezoidal groove, the end with a larger cross-section is close to the side of the cylindrical groove, mica sheets are tightly installed on the sides of the adjacent two commutator segments, and the end surface of the said row rack with cylindrical grooves is installed with The plastic ring socketed on the outer ring of the commutator segment. The utility model has the advantages of simple structure, convenient operation, more convenient demoulding by using a plastic ring instead of the original rubber ring, greatly improving the production speed of the product and the like.

Description

A Commutator Chip Arrangement Mold

technical field

The utility model relates to the field of manufacturing a commutator slice die, in particular to a commutator slice die.

Background technique

The commutator is made of a number of commutator segments and a commutator base, and the base of the commutator is generally made of bakelite powder at high temperature. At the same time, in order to embed the commutator segments in the commutator base, It is necessary to arrange the commutator slices first, and then put bakelite powder into them for high-temperature pressing. In general commutator slices, rubber rings are usually used to fix the commutator slices, and this fixing method is very difficult to remove. Difficult, the commutator segments that have been arranged are not easy to come out. In order to solve this problem and increase the production speed of the commutator, it is necessary to design a new commutator segment die.

Contents of the invention

The technical problem to be solved by the utility model is to provide a commutator die, which has the characteristics of simple structure and convenient operation. By using a plastic ring instead of the original rubber ring, it is more convenient to demould, and the production speed of the product is greatly improved. .

The technical solution adopted by the utility model to solve the technical problem is: to provide a commutator slice die, including a slice rack, a plastic core and a plastic ring, the slice rack is in the shape of a cylinder, and a cylindrical groove is opened on one end surface , and a cylindrical block is arranged in the center, and a plastic core is sleeved on the cylindrical block. The plastic core is in the shape of a ring, and several isosceles trapezoidal grooves are evenly arranged on the outer ring. The cylindrical groove A number of commutator segments are uniformly installed inside, the end of the commutator segment with a small cross-section is inserted into the isosceles trapezoidal groove, the end with a large cross-section is close to the side of the cylindrical groove, and the sides of the two adjacent commutator segments A mica sheet is tightly installed on the top, and a plastic ring sleeved on the outer ring of the commutator is installed on the end face of the sheet row frame with a cylindrical groove. By installing a plastic core on the sheet row frame, the commutator sheet can pass through the plastic ring. The isosceles trapezoidal groove on the core is positioned, and it is stably arranged in the cylindrical groove of the film rack. By installing the plastic ring, the commutator rough mold formed by the commutator piece and the mica piece can be quickly removed from the film rack.

As a supplement to the technical solution described in the present invention, the upper end surface of the cylindrical block is higher than the end surface of the film rack, and by making the cylindrical block higher than the end face of the film rack, the installation of the plastic core is more stable, while avoiding replacement slippage of the device.

As a supplement to the technical solution described in the present invention, the plastic ring presses the upper part of the commutator segment with a large cross-section, so that the commutator segment and the mica segment form a commutator rough mold, and the commutator segment The rough mold of the commutator is evenly installed on the transition plate of the mold. By putting the rough mold of the commutator into the transition plate of the mold, the plastic core and the plastic ring on the rough mold of the commutator can easily fall off.

As a supplement to the technical solution described in the utility model, the middle part of the transition plate of the mold is evenly arranged with a circular through hole whose shape matches the rough mold of the commutator, and the outer ring of the circular through hole is arranged with a shape The circular groove matching the plastic ring, through the arrangement of through holes and circular grooves on the mold transition plate, makes the rough mold of the commutator easy to fall off.

As a supplement to the technical solution described in the present invention, the mold transition plate is installed on the upper end surface of the pressing mold, and the product is arranged on the upper end surface of the pressing mold corresponding to the coarse mold of the commutator. Grooves, by arranging product grooves on the upper end surface of the pressing die, it is convenient to press the commutator rough mold that falls off into a commutator.

Beneficial effect

The utility model relates to a commutator sheet arranging mold. By installing a plastic core on the sheet arranging frame, the commutator sheet can be positioned through an isosceles trapezoidal groove on the plastic core and stably arranged in the cylindrical groove of the sheet arranging frame. Install the plastic ring so that the commutator rough mold formed by the commutator slices and mica slices can be quickly removed from the rack. The utility model also has the characteristics of simple structure and convenient operation, and the replacement of the original rubber ring by the plastic ring makes demoulding more convenient and greatly improves the production speed of the product.

Description of drawings

Fig. 1 is a structural view of the utility model;

Fig. 2 is a structural view of the film rack described in the utility model;

Fig. 3 is the assembling view of sheet rack, plastic core and commutator sheet described in the utility model;

Fig. 4 is the structural view of the plastic core described in the utility model;

Fig. 5 is a structural view of the transition plate described in the utility model;

Fig. 6 is a structural view of the pressing die described in the utility model;

Fig. 7 is a view of the pressed state of the product of the utility model.

Detailed ways

Below in conjunction with specific embodiment, further set forth the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

The embodiment of the present utility model relates to a commutator slice die, as shown in Figure 1-7, comprising a slice rack 1, a plastic core 3 and a plastic ring 2, the slice rack 1 is in the shape of a cylinder, and one end surface There is a cylindrical groove 11, and a cylindrical block 12 is arranged in the center, and a plastic core 3 is sleeved on the cylindrical block 12. The plastic core 3 is in the shape of a ring, and several etc. Waist trapezoidal groove 31, several commutator segments 4 are uniformly installed in the cylindrical groove 11, the end of the small section of the commutator segment 4 is inserted into the isosceles trapezoidal groove 31, and the end with a large section is connected to the cylindrical groove The sides of the 11 are close to each other, and mica sheets 5 are closely installed on the sides of two adjacent commutator segments 4, and the end surface of the columnar groove 11 of the disc rack 1 is equipped with a The plastic ring 2.

The upper end surface of the cylindrical block 12 is higher than the end surface of the rack 1 .

The plastic ring 2 tightly presses the upper part of the large section of the commutator segment 4, so that the commutator segment 4 and the mica segment 5 form a commutator rough mold 13, and the commutator rough mold 13 is evenly installed on the mold transition plate 6 on.

The middle part of the mold transition plate 6 is evenly arranged with a circular through hole 7 whose shape matches the commutator rough mold 13, and a circular groove 8 whose shape matches the plastic ring 2 is arranged on the outer ring of the circular through hole 7 .

The mold transition plate 6 is installed on the upper end surface of the pressing mold 9 , and a product groove 14 is arranged on the upper end surface of the pressing mold 9 corresponding to the rough mold 13 for installing the commutator.

Example

Firstly take a film rack 1, insert the plastic core 3 on the cylindrical block 12 in the middle of the film rack 1, and then install the commutator slice 4 and the mica slice 5 around the center of the plastic core 3 in turn, wherein the commutator slice 4. One end with a small section is inserted into the isosceles trapezoidal groove 31, and the end with a large section is adjacent to the side of the cylindrical groove 11 of the sheet rack 1, and the mica sheet 5 is installed between two adjacent commutator sheets 4, and then The commutator piece 4 and the mica piece 5 will be fixed by the plastic ring 2, and they are kept in this state to form the commutator rough mold 13, and the commutator rough mold 13 is packed into the circular channel of the mold transition plate 6. hole 7, then place the mold transition plate 6 on the upper end face of the pressing mold 9, take out the plastic ring 2 and the plastic core 3 on the commutator rough mold 13, and then place the pressing mold 9 on the upper mold 92 and the lower mold Between 91, the pressing of the commutator base is carried out.

Claims (5)

1. A commutator slice die, comprising a slice rack (1), a plastic core (3) and a plastic ring (2), is characterized in that: the slice rack (1) is cylindrical, and one end face is opened There is a cylindrical groove (11), and a cylindrical block (12) is arranged in the center, and a plastic core (3) is sleeved on the cylindrical block (12), and the plastic core (3) is in the shape of a ring, and its Several isosceles trapezoidal grooves (31) are evenly arranged on the outer ring, and several commutator segments (4) are evenly installed in the cylindrical grooves (11), and the cross-section of the commutator segments (4) is small One end of one end is inserted into the isosceles trapezoidal groove (31), the end with a larger cross-section is close to the side of the cylindrical groove (11), and mica sheets (5) are closely installed on the sides of the adjacent two commutator segments (4), so A plastic ring (2) sleeved on the outer ring of the commutator segment (4) is installed on the end face of the disc rack (1) having a cylindrical groove (11). 2. A commutator sheet-discharging mold according to claim 1, characterized in that: the upper end surface of the cylindrical block (12) is higher than the end surface of the sheet-discharging frame (1). 3. A commutator segment die according to claim 1, characterized in that: the plastic ring (2) presses the upper part of the commutator segment (4) with a large cross section, so that the commutator segment (4) ) and the mica sheet (5) form a commutator rough mold (13), and the commutator rough mold (13) is evenly installed on the mold transition plate (6). 4. A commutator slice die according to claim 3, characterized in that: circular through holes ( 7), the outer ring of the circular through hole (7) is arranged with a circular groove (8) whose shape matches the plastic ring (2). 5. A kind of commutator slice die according to claim 3 or 4, is characterized in that: described die transition plate (6) is installed on the upper end face of pressing die (9), and described pressing die ( 9) A product groove (14) is arranged on the upper end surface corresponding to the rough mold (13) for installing the commutator.