CN115401301A

CN115401301A - Welding positioning fixture and top electrode of armature and push rod

Info

Publication number: CN115401301A
Application number: CN202110590196.4A
Authority: CN
Inventors: 龙智雄; 杨琼
Original assignee: Guizhou Zhenhua Qunying Electric Appliance Co Ltd(state-Owned No891 Factory)
Current assignee: Guizhou Zhenhua Qunying Electric Appliance Co Ltd(state-Owned No891 Factory)
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-11-29

Abstract

The invention discloses a welding positioning fixture for an armature and a push rod and an upper electrode, wherein the fixture comprises a lower positioning piece (6) and a positioning cavity (61) for positioning the armature (2); the upper positioning piece (7) comprises a positioning groove (71), and the positioning groove (71) is arranged on the bottom end face of the upper positioning piece (7) and is used for positioning the push rod (1); and the magnetic element (8) is embedded into the upper positioning piece (7) and is used for adsorbing the push rod (1). The armature of the positioning fixture provided by the invention is placed in the positioning cavity of the lower positioning piece, and the push rod is placed in the fixing groove of the upper positioning piece, so that the positioning of the push rod is completed. Because the rod part of the push rod is made of iron materials, the push rod is attached to the positioning groove under the action of the magnetic element, clamping and positioning of the push rod are completed, and the problem that manual assistance cannot guarantee assembling reliability is solved. After welding, the upper positioning piece or the lower positioning piece moves without shielding the part, so that the purpose of conveniently taking out the assembled part is realized.

Description

Welding positioning fixture and top electrode of armature and push rod

Technical Field

The invention belongs to the technical field of machinery, and particularly relates to a welding positioning fixture for an armature and a push rod and an upper electrode.

Background

In the assembling process in the field of electromagnetic relays, an iron push rod 1 is welded on the end face of an iron armature 2 to form an armature component, the welded push rod is required to be positioned in the middle of the end face of the armature, the push rod part and a welding line are not higher than the side face of the armature, and the armature component is ensured not to interfere during working. Because some types of relays are small in size, the sizes of parts of push rods and armatures adopted by the relays are small, and the welding positioning needs to adopt a good positioning method to ensure the welding qualification rate.

Traditionally, welding of the positioning device is manually assisted and simply positioned, manual assistance positioning depends on the skill of an operator, and reliability of the positioning device cannot be guaranteed. The auxiliary positioning mode is as shown in fig. 2, the armature 2 is placed in a positioning cavity of the lower electrode 3, the push rod is manually held, the tail part of the push rod is placed in a positioning groove of the positioning plate 4, the welding position of the push rod is ensured by the positioning function of the positioning groove, the rear upper electrode 5 descends to press the middle part of the push rod, and discharge welding is carried out. However, this method can reliably position the tail of the push rod, and cannot position the push rod completely. As shown in fig. 3, the positioning grooves of the positioning plate are changed into front and rear positioning, and the middle end is welded by the electrode. Because the part is little, in order to guarantee the welding position, the clearance between constant head tank and the push rod, the push rod headquarters flattens the grow after the cooling under the effect of pressure and hot melt, need to take out the locating plate to the bench lift back.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention aims to provide the welding positioning fixture for the armature and the push rod, which can not only solve the problem that the assembly reliability cannot be ensured by manual assistance, but also can realize the purpose of conveniently taking out the armature and the push rod.

To achieve the object of the present invention, there is provided a positioning jig including:

the lower positioning piece comprises a positioning cavity for positioning the armature;

the upper positioning piece comprises a positioning groove, and the positioning groove is arranged on the bottom end face of the upper positioning piece and is used for positioning the push rod;

and the magnetic element is embedded into the upper electrode and used for adsorbing the push rod.

In some embodiments, the lower positioning piece further comprises a baffle plate, which is arranged on one side of the positioning cavity and used for abutting against one side of the armature when the armature is arranged in the positioning cavity. The armature can be positioned more effectively through the baffle, and the assembling accuracy is improved.

In some embodiments, a cavity is opened on the upper positioning member, and the magnetic element is disposed in the cavity.

In some embodiments, the positioning fixture provided by the present invention further includes a blocking piece fixed on the upper positioning piece, and a lower end of the blocking piece extends out of the upper positioning piece, so that one end of the push rod located in the positioning groove can abut against the blocking piece. The push rod is positioned more effectively through the blocking piece, and the assembling precision is improved.

In some embodiments, the blocking piece is fixed on the upper positioning piece through a screw.

Another objective of the present invention is to provide an upper electrode, which includes an electrode body, wherein a positioning groove is disposed on a bottom end surface of the electrode body.

In some embodiments, the electrode body has a magnetic element embedded therein.

In some embodiments, the electrode body includes a cavity therein, and the magnetic element is disposed within the cavity.

By adopting the technical scheme of the invention, the beneficial effects at least achieved are as follows: the armature iron of the positioning fixture provided by the invention is placed in the positioning cavity of the lower positioning piece, and the push rod is placed in the fixing groove of the upper positioning piece, so that the positioning of the push rod is completed. Because the rod part of the push rod is made of iron materials, the push rod is attached to the positioning groove under the action of the magnetic element, clamping and positioning of the push rod are completed, and the problem that manual assistance cannot guarantee assembling reliability is solved. After welding, the upper positioning piece or the lower positioning piece moves without shielding the part, so that the purpose of conveniently taking out the assembled part is realized.

The armature and the push rod are further positioned through the baffle plate and the baffle plate respectively, and the assembling accuracy is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic view of an armature assembly according to the background of the invention

FIG. 2 is a schematic diagram of the manual assisted positioning of the present invention;

FIG. 3 is a schematic diagram of a conventional positioning method according to the present invention;

FIG. 4 is a schematic structural view of a positioning fixture provided in the present invention;

FIG. 5 is a top electrode structure of the present invention;

in the drawings: 1-push rod, 2-armature, 3-lower electrode, 4-positioning block, 5-upper electrode, 6-lower positioning block, 7-upper positioning block, 8-magnetic element, 9-baffle, 10-screw, 61-positioning die cavity, 62-baffle, 71-positioning groove and 72-die cavity.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the inventive arrangements can be practiced without one or more of the specific details, or with other methods. In other instances, well-known methods, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the invention.

Fig. 4-5 illustrate an exemplary construction of a weld positioning fixture for an armature and a push rod, which fixture, in this embodiment, includes:

the lower positioning piece 6 comprises a positioning cavity 61 for positioning the armature 2;

the upper positioning piece 7 comprises a positioning groove 71, and the positioning groove 71 is arranged on the bottom end face of the upper positioning piece 7 and is used for positioning the push rod 1;

and the magnetic element 8 is embedded in the upper positioning piece 7 and is used for adsorbing the push rod 1.

The armature 2 is placed in the positioning cavity 61 to be fixed, the push rod 1 is placed in the positioning groove 71, and the push rod 1 is fixed in the positioning groove 71 under the action of the magnetic element 8 due to the fact that the push rod 1 contains the ferrous material. Moving the lower positioning piece 6 or the upper positioning piece 7 to enable the armature 2 to be in contact with the push rod 1 and then welding, and completing the assembly of the armature 2 and the push rod 1; after assembly, the assembled parts can be taken out by moving the lower positioning piece 6 or the upper positioning piece 7.

In this embodiment, in order to better position the armature 2, the lower positioning member 6 further includes a blocking plate 62 installed at one side of the positioning cavity 61 for abutting against one side of the armature 2 when the armature 2 is placed in the positioning cavity 61, as shown in fig. 4, so as to better fix the armature 2.

Similarly, in order to fix the push rod 1 better, the upper positioning element 7 is provided with a blocking piece 9, and the lower end of the blocking piece 9 extends out of the lower end of the upper positioning element 7, so that the end of the push rod 1 located in the positioning groove 71 can abut against the blocking piece 9, as shown in fig. 4. The stop piece 9 can be mounted on the upper positioning member 7 by any means, such as being integrally formed with the upper positioning member 7, or being fixed to the upper positioning member 7 by screws 10, or other means.

In this embodiment, the upper positioning member 7 is provided with a cavity 72, and the magnetic element 8 is disposed in the cavity 72.

In this context, the upper positioning member 7 and the lower positioning member 6 may be an upper electrode and a lower electrode, and when the push rod 1 and the armature 2 are contacted, the upper electrode and the lower electrode are energized to perform discharge welding to complete the assembly of the push rod 1 and the armature 2.

When the upper positioning member 7 is used as an upper electrode, a positioning groove is arranged on the bottom end surface of the upper positioning member, the positioning groove is used for fixing the push rod 1, and a magnetic element is embedded in the upper electrode and used for adsorbing the push rod 1 to fix the push rod 1 in the positioning groove. A cavity is arranged on the upper electrode, and the magnetic element is arranged in the cavity.

The fixing groove may be any structure, such as an inverted V-shaped groove, which is beneficial to fixing the push rod 1.

According to the positioning fixture, the armature 2 is placed in the positioning cavity 61 of the lower positioning piece 6, the push rod 1 is placed on the positioning groove 71 of the upper positioning piece 7, and the tail part of the push rod abuts against the blocking piece 9 to complete positioning of the push rod; the armature 2 is placed in a positioning cavity 61 of the lower positioning piece 6, so that the side face of the armature 2 is attached to the baffle 62, and the positioning of the armature 2 is completed. And (3) pushing the upper positioning piece 7 to a certain contact degree between the push rod 1 and the armature 2 through driving equipment or manually, and welding and assembling the push rod 1 and the armature 2. And after the assembly is finished, the upper positioning piece 7 or the lower positioning piece 6 is moved to take out the assembled parts.

When the upper positioning piece 7 and the lower positioning piece 6 are electrodes, the upper electrode can be installed in the corresponding position of spot welding equipment, the spot welding equipment drives the upper electrode to move downwards, and the parts are welded by discharge welding when the push rod 1 and the armature 2 are contacted to a certain degree; after welding, the spot welding equipment drives the upper electrode to move upwards, and then welded parts can be taken out.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. The utility model provides an armature and push rod's welding position anchor clamps which characterized in that, this anchor clamps include:

the lower positioning piece (6) comprises a positioning cavity (61) for positioning the armature (2);

the upper positioning piece (7) comprises a positioning groove (71), and the positioning groove (71) is arranged on the bottom end face of the upper positioning piece (7) and used for positioning the push rod (1);

and the magnetic element (8) is embedded into the upper positioning piece (7) and is used for adsorbing the push rod (1).

2. The armature and push rod welding positioning fixture according to claim 1, wherein the lower positioning piece (6) further comprises a baffle (62) installed at one side of the positioning cavity (61) for abutting against one side of the armature (2) when the armature (2) is placed in the positioning cavity (61).

3. The armature and push rod welding positioning fixture according to claim 1, wherein a cavity (72) is formed in the upper positioning member (7), and the magnetic element (8) is placed in the cavity (72).

4. The armature and push rod welding positioning fixture according to claim 1, 2 or 3, further comprising a blocking piece (9) fixed on the upper positioning piece (7), wherein the lower end of the blocking piece (9) extends out of the upper positioning piece (7), so that one end of the push rod (1) when being located in the positioning groove (71) can abut against the blocking piece (9).

5. The welding positioning fixture for the armature and the push rod according to claim 4, characterized in that the baffle plate (9) is fixed on the upper positioning piece (7) through a screw (10).

6. The upper electrode is characterized by comprising an electrode body, wherein a positioning groove is formed in the bottom end face of the electrode body.

7. The upper electrode of claim 6, wherein the electrode body has embedded therein a magnetic element.

8. The upper electrode according to claim 7, wherein the electrode body includes a cavity therein, and the magnetic element is disposed in the cavity.