CN201669377U

CN201669377U - Armature molding mould for fabricating electromagnetic relay

Info

Publication number: CN201669377U
Application number: CN2010202153865U
Authority: CN
Inventors: 田卫兵
Original assignee: Panasonic Industrial Devices Beijing Co Ltd
Current assignee: Panasonic Industrial Devices Beijing Co Ltd
Priority date: 2010-06-04
Filing date: 2010-06-04
Publication date: 2010-12-15
Anticipated expiration: 2020-06-04

Abstract

The utility model provides a armature molding mould for fabricating electromagnetic relay, comprising an upper mould cavity and a lower mould cavity, which forming a model cavity matched with the armature when mold clamp, wherein the upper surface of the lower mould cavity has a pouring opening and a pouring passage for pouring the liquid into the mould cavity, the pouring opening is communicated with the mould cavity, a section of the pouring passage extends into the mould cavity to form a U-shaped bench aligning to the upper surface of the lower mould cavity; a square through-hole with the width larger than that of the pouring passage is arranged positively above the pouring passage on the upper mould cavity, one side wall aligns to the side wall of the U-shaped bench perpendicular to the pouring passage, a square embedded member with the lower surface aligning to the lower surface of the upper mould cavity is arranged in the square through-hole. The armature with sprue member by the molding mould can removes the sprue member easily, with high separating quality; even if having, the residual lies in the groove, will not contact the coil of the electromagnetic relay, thereby ensuring the quality of the electromagnetic relay.

Description

Make the mould of electromagnetic relay with armature

Technical field

The utility model relates to electromagnetic relay and makes the field, relates in particular to a kind of mould of making electromagnetic relay with armature.

Background technology

Electromagnetic relay is a kind of relay that utilizes electromagnetic force to drive mechanical part caused by relative motion predetermined response to, and it generally is made up of iron core member, coil, armature, yoke, the reed etc. that has a contact.When producing electromagnetic force in the coil when the electric current, armature is attracted, thereby makes the stationary contact adhesive of movable contact and static contact spring piece of movable contact spring; When in the coil during current vanishes electromagnetic force disappear thereupon, armature resets, thereby makes the movable contact of movable contact spring separate with the stationary contact of static contact spring piece.Adhesive by movable contact and stationary contact or separate reaches conducting or cuts off the purpose of circuit.Armature is the indispensable important component part of electromagnetic relay.

As depicted in figs. 1 and 2, the electromagnetic relay of prior art (PA of automaton Co., Ltd of Beijing Panasonic series relay) comprises bobbin 11 (built-in L sections core), support body parts 13 and is located at armature 12 on the support body parts 13 (also cry connect extremely sub), yoke 14, movable contact spring 15, static contact spring piece 16, first lead-out terminal 181 and second lead-out terminal 182; One end of bobbin 11 is provided with the step that is embedded first wire wrap terminal 171 and second wire wrap terminal 172, first wire wrap terminal 171 and second wire wrap terminal 172 are embedded on the bottom surface of step, winding around 111 on the bobbin 11, the two ends of coil 111 are wrapped in respectively on first wire wrap terminal 171 and second wire wrap terminal 172, bobbin 11 is connected on the support body parts 13 by yoke 14 and L sections core, forms cavity between bobbin 11 and the support body parts 13; One end clamping of one end of armature 12 and clamping support body parts 13, middle part insulated part and movable contact spring 15 against, the other end is relative with yoke 14; Static contact spring piece 16 is oppositely arranged with movable contact spring 15, and armature 12 and static contact spring piece 16 lay respectively at the both sides of movable contact spring 15; First lead-out terminal 181 and second lead-out terminal 182 are electrically connected with movable contact spring 15 and static contact spring piece 16 respectively.

This electromagnetic relay course of work is roughly as follows:

Making alive between first wire wrap terminal 171 and second wire wrap terminal 172, coil 111 energisings produce electromagnetic force, yoke 14 attracts armature 12 end relative with it, the middle part of armature 12 promotes movable contact spring 15 and makes stationary contact 161 adhesives of movable contact 151 with static contact spring piece 16 of movable contact spring 15, and output circuit is connected; Electromagnetic force disappears when coil blackout, and movable contact spring 15 resets, and the middle part that promotes armature 12 makes armature 12 also reset, and the movable contact 151 of movable contact spring 15 separates with the stationary contact 161 of static contact spring piece 16, and output circuit is cut off.

Armature 12 is made by mould molding, extremely shown in Figure 5 as Fig. 3, the mould of prior art comprises upper impression 1 and lower impressions 2, form the model cavity 3 that is complementary with described armature when described upper impression 1 and lower impressions 2 matched moulds, the upper surface of described lower impressions 2 offers sprue gate 4 and the cast passage 5 that flows into described model cavity for cast liquid, described sprue gate 4 is communicated with described model cavity 3 by described cast passage 5, cast passage 5 comprises with sprue gate 4 is communicated with and the degree of depth diminishes inclined-plane passage 52 and the constant parallel channels 53 of the degree of depth that is communicated with described model cavity, the bottom surface of parallel channels 53 extend into described model cavity 3 interior a section.

As shown in Figure 6 and Figure 7, the armature that has cast gate spare 12 that the mould of prior art produces is corresponding with the model cavity 3 of mould, cast gate spare comprise with sprue gate 4 corresponding parts 41, with corresponding chamfered portion 54 of inclined-plane passage 52 and the parallel portion 92 corresponding with parallel channels 53, the lip-deep groove 61 of the corresponding armature of part in the model cavity is goed deep in the bottom surface of parallel channels, and the width of groove 61 equates with the width of cast passage 5.Pouring piece need be separated with armature 12 during use.

When separating cast gate spare, from the intersection fracture of chamfered portion and parallel portion, this can cause the residual and residual surface that is higher than armature near coil 111 of cast gate spare to cast gate spare usually, and the coil 111 of may damaging when armature is installed does not meet quality requirement.

The utility model content

The purpose of this utility model is to provide a kind of mould of making electromagnetic relay with armature, the armature that has cast gate spare that it is produced, and not only cast gate spare can be separated at an easy rate, and residual height is less.

In order to achieve the above object, the utility model provides a kind of mould of making electromagnetic relay with armature, comprise upper impression and lower impressions, form the model cavity that is complementary with described armature when described upper impression and lower impressions matched moulds, the upper surface of described lower impressions offers sprue gate and the cast passage that flows into described model cavity for cast liquid, described sprue gate is communicated with described model cavity by described cast passage, it is characterized in that described cast passage extends into one section formation of described model cavity U type platform concordant with described lower impressions upper surface; Described upper impression offers the square through hole of width greater than described cast width of channel directly over being positioned at described cast passage, a sidewall of described square through hole is concordant perpendicular to the sidewall of described cast passage with described U type platform, be provided with square mold insert in the described square through hole, the lower surface of described square mold insert is concordant with the lower surface of described upper impression.

Preferably, the lower surface of described cast passage is that the degree of depth of an inclined-plane and described cast passage diminishes to the direction of described model cavity gradually at described sprue gate.

Preferably, the width of described square through hole equals the width of described U type platform.

Preferably, the length of described square mold insert equates with the height of described upper impression.

Preferably, described square through hole has a step near described upper impression surface, and described square mold insert has the Access Division of mating with described step near described upper impression surface.

The beneficial effects of the utility model are: the shape of the cast passage by changing lower impressions also is provided with square through hole and square mold insert on upper impression, make the armature surface that has cast gate spare that produces form the groove of a width greater than the cast channel width, the part that cast gate spare is connected with armature is positioned at groove, cast gate spare ruptures from the root in the groove during separation, separate easily, the disjunction quality is higher; Even the residual higher groove that also is positioned at is arranged, be assembled in the electromagnetic relay and also can not run into coil, guaranteed the quality of electromagnetic relay.

Description of drawings

Fig. 1 is the front elevational schematic of the electromagnetic relay of prior art;

Fig. 2 is the schematic top plan view of the electromagnetic relay of prior art;

Fig. 3 is the structural representation of the manufacturing electromagnetic relay of prior art with the upper impression of the mould of armature;

Fig. 4 is the structural representation of the manufacturing electromagnetic relay of prior art with the lower impressions of the mould of armature;

Fig. 5 is the partial enlarged drawing of regional A among Fig. 4;

Fig. 6 is the structural representation of the armature that has cast gate spare that produces of the mould of prior art;

Fig. 7 is the structural representation of another direction of the armature that has cast gate spare shown in Figure 6;

Fig. 8 is the decomposition texture schematic diagram of manufacturing electromagnetic relay of the present utility model with the upper impression of the mould of armature;

Fig. 9 is the structural representation of manufacturing electromagnetic relay of the present utility model with the lower impressions of the mould of armature;

Figure 10 is the partial enlarged drawing of area B among Fig. 9;

Figure 11 is the structural representation of the armature that has cast gate spare that produces of mould of the present utility model;

Figure 12 is the structural representation of another direction of the armature that has cast gate spare shown in Figure 11.

The specific embodiment

The present invention is described in further detail below in conjunction with accompanying drawing.

Extremely shown in Figure 10 as Fig. 8, the manufacturing electromagnetic relay of present embodiment comprises upper impression 1 and lower impressions 2 with the mould of armature, form the model cavity 3 that is complementary with armature when upper impression 1 and lower impressions 2 matched moulds, the upper surface of lower impressions 2 is provided with sprue gate 4 and the cast passage 5 for cast liquid flow model cavity 3, sprue gate 4 is communicated with model cavity 3 by cast passage 5, and cast passage 5 extends into 3 one sections formation of model cavity U type platform concordant with lower impressions 2 upper surfaces; Upper impression 1 offers the square through hole 7 of width greater than the width of cast passage 5 directly over being positioned at cast passage 5, a sidewall of square through hole 7 is concordant perpendicular to the sidewall of cast passage 5 with U type platform, be provided with square mold insert 8 in the square through hole 7, the lower surface of square mold insert 8 concordant with the lower surface of upper impression 1 (i.e. the surface that contacts with lower impressions).The lower surface of cast passage 5 is that the degree of depth of inclined-plane and cast passage 5 diminishes to the direction of model cavity 3 gradually at sprue gate 4.In the present embodiment, the width of square through hole 7 equals the width of U type platform, and certainly, as long as the width of square through hole 7 is greater than the width of pouring into a mould passage 5.

As Figure 11 and shown in Figure 12, adopt the armature that has cast gate spare that manufacturing electromagnetic relay of the present utility model produces with the mould of armature compared with prior art, because it is concordant after the square mold insert 8 insertion upper impression of upper impression 1 with the lower surface of upper impression 1, and the cast passage 5 of lower impressions 2 extends into 3 one sections formation of model cavity U type platform (be positioned at the sidewall of model cavity on) concordant with lower impressions 2 upper surfaces, thereby on the armature surface, formed the groove 14 of a perforation, cast gate spare comprise with sprue gate 4 corresponding parts 41 and with the corresponding chamfered portion 55 of cast passage 5, the root of chamfered portion 55 is positioned at the groove 14 of this perforation, and the width of groove 14 is greater than the width of this chamfered portion 55.

When separating cast gate spare, it may rupture from root, can be separated at an easy rate, and residual height is less, and the disjunction quality is higher; Even the residual higher groove that also is positioned at is arranged, be lower than the surface of armature near coil, be assembled in the electromagnetic relay and also can not run into coil, guaranteed the quality of electromagnetic relay.

As a improvement to present embodiment, as shown in Figure 8, the height of square mold insert 8 equates with the height of upper impression 1, promptly the upper surface from upper impression 1 extends to lower surface, square through hole 7 has a step 15 near the upper impression surface, and square mold insert 8 has the Access Division 16 of mating with step 15 near the upper impression surface.Certainly, square mold insert 8 also can be stuck on the upper surface of upper impression 1 by other modes such as T stages, is convenient to picking and placeing of square mold insert 8.

The utility model is not limited to above-mentioned specific embodiment; do not deviating under the utility model spirit and the real situation thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong within the claims protection domain of the present invention.

Claims

1. make the mould that electromagnetic relay is used armature for one kind, comprise upper impression and lower impressions, form the model cavity that is complementary with described armature when described upper impression and lower impressions matched moulds, the upper surface of described lower impressions offers sprue gate and the cast passage that flows into described model cavity for cast liquid, described sprue gate is communicated with described model cavity by described cast passage, it is characterized in that described cast passage extends into one section formation of described model cavity U type platform concordant with described lower impressions upper surface; Described upper impression offers the square through hole of width greater than described cast width of channel directly over being positioned at described cast passage, a sidewall of described square through hole is concordant perpendicular to the sidewall of described cast passage with described U type platform, be provided with square mold insert in the described square through hole, the lower surface of described square mold insert is concordant with the lower surface of described upper impression.

2. manufacturing electromagnetic relay according to claim 1 is characterized in that with the mould of armature the lower surface of described cast passage is that the degree of depth of an inclined-plane and described cast passage diminishes to the direction of described model cavity gradually at described sprue gate.

3. manufacturing electromagnetic relay according to claim 1 and 2 is characterized in that with the mould of armature the width of described square through hole equals the width of described U type platform.

4. manufacturing electromagnetic relay according to claim 1 and 2 is characterized in that with the mould of armature the length of described square mold insert equates with the height of described upper impression.

5. the manufacturing electromagnetic relay according to claim 4 mould of armature, it is characterized in that, described square through hole has a step near described upper impression surface, and described square mold insert has the Access Division of mating with described step near described upper impression surface.