Commutator segment arranging die

Abstract

The utility model discloses a commutator segment arrangement mould, comprising a segment arrangement frame, a central position-restricted column is fixedly installed in the middle of the bottom of the inner wall of the segment arrangement frame, a plastic core is sleeved on the outer ring of the central position-restricted column, a sleeve structure is inserted in the inner cavity of the segment arrangement frame, and the bottom of the sleeve structure is fixedly connected with clamping sheets at equal intervals. According to the commutator segment arranging mold, through the design and use of the limiting ring, the sleeve structure and the clamping pieces, during demolding, the limiting ring can be directly held and pulled upwards to take out a rough mold of a commutator, all structures on the rough mold are clamped all the time, and the problem that the rough mold is damaged during demolding can be effectively solved. And commutator segments and mica sheets are easy to loosen, fall off and misplace.

Description

TECHNICAL FIELD

[0001] The utility model relates to a commutator manufacturing technical field, concretely to a commutator row piece mould. BACKGROUND

[0002] The commutator is the main component in the motor, which is mainly composed of an inner bush, an bakelite main body around the inner bush and copper row commutating pieces arranged around the bakelite main body, and the commutator is made of several commutating pieces and a commutator base, and the base of the commutator is generally made by high-temperature pressing of bakelite powder, and in order to embed the commutating pieces in the commutator base, the commutating pieces must be arranged first, and then put into the bakelite powder for high-temperature pressing.

[0003] When arranging the commutating pieces, a corresponding row piece mould needs to be used, such as the prior art CN204720751U, which specifically discloses a commutator row piece mould, which uses a plastic ring to replace the traditional rubber ring technology, so that demoulding becomes convenient, but the technical scheme still has obvious defects, for example:

[0004] The size of the plastic ring is fixed, and the clamping force on the arranged and inserted commutating pieces and mica pieces will not change, that is, when demoulding, the commutating pieces and mica pieces are prone to loosen, fall off and dislocation;

[0005] Secondly, the mica pieces are brittle, and when arranging the inserted commutating pieces and mica pieces, the position relationship between the two is adjusted, which is prone to collision, and the mica pieces are prone to breakage.

[0006] Therefore, we propose a commutator row piece mould to solve the above problems. INVENTION CONTENTS

[0007] The utility model aims at providing a commutator row piece mould to solve the problems in the background art.

[0008] To achieve the above object, the utility model provides the following technical scheme:

[0009] A commutator row piece mould, comprising a row piece frame, a center limiting column is fixedly installed in the middle of the bottom of the inner wall of the row piece frame, a plastic core is sleeved on the outer ring of the center limiting column, a sleeve structure is inserted into the inner cavity of the row piece frame, and clamping pieces are fixedly connected at equal distances on the bottom of the sleeve structure

[0010] Preferably, a limiting ring is fixedly connected to the top of the sleeve structure, and the diameter of the limiting ring is greater than the outer diameter of the row piece frame.

[0011] Preferably, the clamping piece is a thin elastic piece structure, and the overall height of the clamping piece and the sleeve structure is the same as the depth of the piece rack.

[0012] Preferably, equidistantly arranged on the inner side wall of the sleeve structure are insertion grooves for placing mica pieces.

[0013] Preferably, the number of the insertion grooves is the same as the number of the clamping pieces, the bottom of the insertion groove is located at the middle of the top of the clamping piece, and the inner side wall of the insertion groove is on the same vertical line as the inner edge of the top of the clamping piece.

[0014] Preferably, equidistantly arranged on the inner side wall of the plastic core are limiting strip structures, and equidistantly arranged on the outer side wall of the center limiting column are limiting groove structures.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. The commutator piece rack mold, through the design and use of the limiting ring, the sleeve structure and the clamping piece, when demolding, the limiting ring can be directly held and pulled upward to take out the commutator rough mold, and all the structures on the rough mold are clamped, which can effectively solve the problems of loosening, falling off and mispositioning of the commutator pieces and mica pieces during demolding.

[0017] 2. The commutator piece rack mold, through the design and use of the sleeve structure and the insertion groove, the mica pieces are installed in the insertion groove, and one commutator piece is subjected to the action of two clamping pieces, which can effectively solve the problem of frequent adjustment of the mica pieces and the commutator pieces during the piece arranging process, and can effectively solve the problem of collision and fracture of the mica pieces. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The utility model structural schematic diagram is shown in the figure;

[0019] Figure 2 The utility model structure explosion map is shown in the figure.

[0020] In the figure: 1, piece rack; 2, center limiting column; 3, plastic core; 4, limiting ring; 5, sleeve structure; 6, clamping piece; 7, limiting strip structure; 8, limiting groove structure; 9, insertion groove. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] See Figures 1-2 This utility model provides a technical solution for a commutator segment arrangement mold:

[0023] Example:

[0024] The tray arrangement mold mainly includes a tray arrangement frame 1, a central limiting post 2 fixedly installed in the middle of the bottom of the inner wall of the tray arrangement frame 1, a plastic core 3 fitted on the outer ring of the central limiting post 2, a limiting ring 4 set at the top of the tray arrangement frame 1, a sleeve structure 5 integrally fixedly connected to the inner side wall of the limiting ring 4, and clamping pieces 6 evenly arranged at the bottom of the sleeve structure 5.

[0025] In practical use, the plastic core 3 is directly fitted onto the central limiting post 2, and the limiting ring 4 with the sleeve structure 5 and the clamping piece 6 is placed at the top of the film rack 1, and the sleeve structure 5 and the clamping piece 6 are positioned as follows. Figure 1 As shown, insert it into the inner cavity of the film rack 1, and then you can proceed with the insertion and placement of the commutator segments and mica sheets.

[0026] When placing the commutator segments and mica sheets, the lower half of the commutator segments and mica sheets will squeeze the clamping plate 6, causing the clamping plate 6 to move closer to the inner wall of the sheet rack 1. Through the elastic force generated by the deformation of the clamping plate 6, the placed mica sheets and commutator segments are clamped and fixed. Then, during demolding, the commutator rough mold can be taken out by directly holding the limiting ring 4 and pulling it upward. All the structures on the rough mold are always clamped, which can effectively solve the problem of commutator segments and mica sheets being easy to loosen, fall off, and misalign during demolding.

[0027] The outer diameter of the limiting ring 4 is larger than the outer diameter of the film rack 1, and the clamping piece 6 is a thin sheet structure with a certain elasticity.

[0028] The diameter of the limiting ring 4 is limited mainly to facilitate demolding. During demolding, the outer edge of the bottom of the limiting ring 4 can be directly supported. The clamping piece 6 is made of elastic thin sheet, mainly to utilize its deformation capacity to generate an interaction force with the commutator rough mold, thereby clamping and fixing the commutator rough mold.

[0029] Insertion slots 9 for inserting mica sheets are provided at equal intervals on the inner wall of the sleeve structure 5. The number of insertion slots 9 is equal to the number of clamping pieces 6. The bottom of the insertion slot 9 is located at the middle of the top of the clamping piece 6, and the inner wall of the insertion slot 9 and the inner edge of the top of the clamping piece 6 are on the same vertical line.

[0030] When the inserting and placing of the commutating sheet and the mica sheet are carried out, firstly, the mica sheet is inserted into the mold along the inserting groove 9, and after the mica sheet is inserted along the inserting groove 9, the mica sheet is further inserted into the inner cavity of the sheet arranging frame 1 along the inner side wall of the clamping sheet 6, then the upper commutating sheet is inserted beside the mica sheet, and the outer side wall of the commutating sheet is overlapped on the two clamping sheets 6, that is, one commutating sheet is subjected to the action force of the two clamping sheets 6, which can effectively solve the problem that the mica sheet is easily broken due to collision during the process of frequently adjusting the mica sheet and the commutating sheet.

[0031] The inner side wall of the plastic core 3 is provided with a limiting strip structure 7 at equal intervals, and the outer side wall of the center limiting column 2 is provided with a limiting groove structure 8 which is matched with the limiting strip structure 7 at equal intervals.

[0032] When the plastic core 3 is placed, the limiting strip structure 7 and the limiting groove structure 8 are inserted and installed in a one-to-one corresponding manner, which can effectively avoid the rotation of the plastic core during the subsequent sheet arranging process, thereby avoiding the friction between the plastic core and the mica sheet and the commutating sheet, and effectively solving the problem that the position of the commutating sheet and the mica sheet is affected or even damaged due to the action of the plastic core.

[0033] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A commutator segment die comprising a segment holder (1), characterized in that: The middle part of the bottom of the inner wall of the row film frame (1) is fixedly installed with a center limiting column (2), the outer ring of the center limiting column (2) is sleeved with a plastic core (3), the inner cavity of the row film frame (1) is inserted with a sleeve structure (5), and the bottom of the sleeve structure (5) is fixedly connected with clamping pieces (6) at equal distances.

2. A commutator segment mold as defined in claim 1 wherein: The top of the sleeve structure (5) is fixedly connected with a limiting ring (4), and the diameter of the limiting ring (4) is greater than the outer diameter of the row film frame (1).

3. A commutator segment mold as defined in claim 1 wherein: The clamping piece (6) is a kind of elastic sheet structure, and the overall height of the clamping piece (6) and the sleeve structure (5) is the same as the depth of the row film frame (1).

4. A commutator segment mold in accordance with claim 1 characterized by: The inner side wall of the sleeve structure (5) is equally provided with a plurality of insertion grooves (9) for placing mica sheets.

5. A commutator segment mold in accordance with claim 4 wherein: The number of the insertion grooves (9) is the same as that of the clamping pieces (6), the bottom of the insertion groove (9) is located at the middle position of the top of the clamping piece (6), and the inner side wall of the insertion groove (9) is on the same vertical line with the inner edge of the top of the clamping piece (6).

6. A commutator segment mold in accordance with claim 1 characterized by: The inner side wall of the plastic core (3) is equally provided with a plurality of limiting strip structures (7), and the outer side wall of the center limiting column (2) is equally provided with a plurality of limiting groove structures (8).

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