CN111805072B

CN111805072B - Multipoint synchronous spot welding mechanism for motor shell and protective sleeve

Info

Publication number: CN111805072B
Application number: CN202010659399.XA
Authority: CN
Inventors: 王辉; 舒旭东
Original assignee: Hengdian Group Innuovo Electric Co Ltd
Current assignee: Hengdian Group Innuovo Electric Co Ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-09-07
Anticipated expiration: 2040-07-09
Also published as: CN111805072A

Abstract

The invention relates to a multipoint synchronous spot welding mechanism for a motor shell and a protective sleeve. The utility model provides a motor casing and synchronous spot welding mechanism of protective sheath multiple spot, includes the bottom plate, the bottom plate middle part is equipped with the work piece positioning seat, work piece positioning seat circumference side is equipped with a plurality of fixed blocks, be equipped with the spout on the fixed block, and the spout in-slide is equipped with the bonding tool, and one side that the work piece positioning seat was kept away from to every bonding tool all is equipped with one and promotes the piece, promote piece and bonding tool linkage, the axis of a plurality of spouts is and uses the work piece positioning seat to set up as the annular interval at center, and two adjacent promotion pieces pass through the turning block and connect, the turning block middle part is rotatable fixed with the dead lever, the turning block both ends are rotatable fixed with the tip that promotes the piece respectively, the vertical setting of dead lever is fixed in the bottom plate upside, and a plurality of promotion pieces and a plurality of turning blocks constitute the connecting rod structure of end to end. The invention has the advantages of capability of simultaneously carrying out multi-point welding on the protective sleeve so as to ensure the welding effect and lower cost.

Description

Multipoint synchronous spot welding mechanism for motor shell and protective sleeve

Technical Field

The invention relates to the field of motor assembly, in particular to a multipoint synchronous spot welding mechanism for a motor shell and a protective sleeve.

Background

A protective sheath need be established to the motor housing outside cover, takes place the condition that the protective sheath drops when preventing the motor to use, need melt the protective sheath with ultrasonic bonding head to it is fixed with the casing to be convenient for the protective sheath.

In the prior art, a plurality of cylinders are arranged on the circumferential outer sides of a casing and a protective sleeve, the output end of each cylinder is fixed with one ultrasonic welding head, and all cylinders are started simultaneously to realize simultaneous operation of all the ultrasonic welding heads. Even if ventilate simultaneously, perhaps a plurality of cylinders use same solenoid valve, but the speed that the air inlet throttle valve on the cylinder was twisted in order to control the cylinder motion by hand, the not good adjustment of the synchronism of a plurality of cylinders, the power of every bonding tool and protective sheath contact's strength difference, the welding effect is different, and the outward appearance uniformity is poor.

Disclosure of Invention

The invention aims to provide a multipoint synchronous spot welding mechanism for a motor shell and a protective sleeve, which can perform multipoint welding of the protective sleeve simultaneously so as to ensure the welding effect and has lower cost.

In order to achieve the purpose, the invention adopts the following technical scheme: a multipoint synchronous spot welding mechanism for a motor shell and a protective sleeve comprises a bottom plate, wherein a workpiece positioning seat is arranged in the middle of the bottom plate, a plurality of fixed blocks are arranged on the circumferential side of the workpiece positioning seat, sliding grooves are formed in the fixed blocks, welding heads are arranged in the sliding grooves in a sliding mode, a pushing block is arranged on one side, away from the workpiece positioning seat, of each welding head, the pushing blocks are linked with the welding heads, the axes of the sliding grooves are arranged in an annular interval mode by taking the workpiece positioning seat as the center, two adjacent pushing blocks are connected through rotating blocks, the middle of each rotating block is rotatably fixed with a fixed rod, two ends of each rotating block are respectively rotatably fixed with the end portion of each pushing block, the fixed rod is vertically arranged and fixed on the upper side of the bottom plate, and the pushing blocks and the rotating blocks form a connecting rod structure connected end to end; the surface of the welding head, which is used for being in contact with the pushing block, is an arc surface, and one end of the welding head, which is far away from the workpiece positioning seat, is fixed with a ball body capable of rotating automatically; the welding head is matched with a return spring, the return spring is sleeved on the welding head, a limiting part extending towards the outer side in the circumferential direction is arranged on the side, close to the pushing block, of the welding head, the return spring is located between the fixing block and the limiting part, the pushing block swings to abut against the welding head, and the return spring is compressed.

Because a plurality of pushing blocks are connected with each other, as long as one pushing block is moved, the simultaneous movement of all the pushing blocks can be realized so as to push all the welding heads to move simultaneously, so as to realize synchronous welding, so as to ensure the consistency of welding effect and have lower cost. Wherein, the spout is used for the direction when bonding tool removes. Wherein, ultrasonic welding heads or high temperature can be adopted to weld and fix the protective sleeve and the machine shell, and the selection and the use of the welding heads are conventional technical means in the field. Wherein, through setting up the cambered surface in order to reduce the area of contact of bonding tool and promotion piece to increase of service life. Wherein, the bulb is arranged to further prolong the service life of the welding head.

The reset spring is used for resetting the welding head, when the welding head moves to weld the protective sleeve and the shell, the reset spring is compressed, and after the pushing block resets, the welding head resets under the action of the reset spring; wherein, the return spring can adopt a compression spring.

Preferably, the pushing block or the rotating block is connected with an output end of a driving mechanism. The invention can simultaneously realize the simultaneous movement of all the pushing blocks by only arranging one driving mechanism, and has lower cost. Wherein, it is long when setting up actuating mechanism speed and removal when can also controlling the bonding tool and removing to avoid the bonding tool to take place the condition emergence of striking casing outer protective sheath, take place with the relatively poor condition of protective sheath and casing welding effect that avoids leading to because of the welding time is short. Wherein, the driving mechanism can adopt a cylinder.

Preferably, the rotating block is of an L-shaped structure, and the middle part of the rotating block is closer to the workpiece positioning seat than two ends of the rotating block. The arrangement is such that the structure of the invention is more compact.

Preferably, the pushing block extends towards one side far away from the workpiece positioning seat to form a connecting bulge, the output end of the driving mechanism is rotatably connected with the connecting bulge, the front end and the rear end of the pushing block with the connecting bulge are respectively connected with a rotating block, and the output end of the driving mechanism moves back and forth to drive the pushing block with the connecting bulge to move back and forth. The arrangement is used for enabling the pushing block to have a longer stroke as far as possible so as to ensure that the pushing block can push the welding head to move.

Preferably, a linear bearing is fixed in the slide groove. The linear bearing is arranged to make the resistance of the welding head smaller during movement, so that the welding head can move conveniently.

Preferably, the axes of the sliding grooves are uniformly arranged at intervals in an annular shape with the workpiece positioning seat as the center. The welding points of the protective sleeve are uniformly distributed by the arrangement, so that the protective sleeve and the shell are better fixed.

Preferably, the fixed block bottom is equipped with the fixed part, the fixed part is formed with the bar groove, the axis in bar groove and the axis parallel arrangement of spout, be equipped with the fixed orifices on the bottom plate, the fixed block passes through the bolt and is fixed with the bottom plate to make the bolt pass bar groove and fixed orifices. The position of the fixed block can be changed to change the stroke of the return spring which is compressed and contracted, so that the moving distance of the welding head to the side of the workpiece positioning seat can be further adjusted.

The invention has the advantages of capability of simultaneously carrying out multi-point welding on the protective sleeve so as to ensure the welding effect and lower cost.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

fig. 2 is a cross-sectional view of the fixture block and weld head of the present invention.

Detailed Description

The invention is further described below with reference to the figures and specific embodiments.

As shown in fig. 1 and fig. 2, the multipoint synchronous spot welding mechanism for the motor shell and the protective sleeve of the invention comprises a bottom plate 1, a workpiece positioning seat 2 is arranged in the middle of the bottom plate 1, four fixed blocks 3 are arranged on the circumferential sides of the workpiece positioning seat 2, a sliding groove 31 is arranged on each fixed block 3, and the welding head 4 is furnished with in the spout 31 in the cunning, one side that work piece positioning seat 2 was kept away from to every welding head 4 all is equipped with one and is the promotion piece 5 of bar, promote piece 5 and welding head 4 linkage, the axis of a plurality of spouts 31 is and uses work piece positioning seat 2 as the even setting of annular interval at center, two adjacent promotion pieces 5 pass through turning block 6 and connect, turning block 6 middle part and dead lever 7 rotatable fixation, turning block 6 both ends respectively with one promote the tip rotatable fixation of piece 5, the vertical setting of dead lever 7 is fixed in the bottom plate upside, four promote piece 5 and four turning block 6 constitution end to end's connecting rod structure.

One pushing block 5 extends to one side far away from the workpiece positioning seat 2 to form a connecting bulge 51, the output end of the driving mechanism 8 is rotatably connected with the connecting bulge 51, the front end and the rear end of the pushing block with the connecting bulge 51 are respectively connected with one rotating block 6, and the output end of the driving mechanism 8 moves back and forth to drive the pushing block with the connecting bulge 51 to move back and forth. Wherein the driving mechanism 8 is a cylinder.

The welding head 4 is matched with a return spring, the return spring is sleeved on the welding head 4, a limiting part 41 extending towards the outer circumferential side is arranged on the side, close to the pushing block 5, of the welding head, the return spring is located between the fixing block 3 and the limiting part 41, the pushing block 5 swings to abut against the welding head 4, and the return spring is compressed.

Wherein, the cross section of the turning block 6 is in an L-shaped structure, and the middle part of the turning block 6 is closer to the workpiece positioning seat 2 than the two ends of the turning block 6. Wherein, 3 bottoms of fixed block are equipped with fixed part 32, and fixed part 32 is formed with bar groove 33, and the axis of bar groove 33 and the axis parallel arrangement of spout 31 are equipped with the fixed orifices on the bottom plate 1, and fixed block 3 is fixed through bolt and bottom plate 1 to make the bolt pass bar groove 33 and fixed orifices. Wherein, a linear bearing 35 is fixed in the chute 31, and the welding head passes through the linear bearing 35.

When the welding fixture is used, the protective sleeve is sleeved outside the shell with one closed end, then the shell is sleeved at the upper end of the workpiece positioning seat, and then the driving mechanism is started to realize the welding fixation of the protective sleeve and the shell. Wherein, the setting of work piece positioning seat structure is carried out according to the actual structure of casing.

Claims

1. A multipoint synchronous spot welding mechanism for a motor shell and a protective sleeve is characterized by comprising a bottom plate, wherein a workpiece positioning seat is arranged in the middle of the bottom plate, a plurality of fixed blocks are arranged on the circumferential side of the workpiece positioning seat, sliding grooves are formed in the fixed blocks, welding heads are arranged in the sliding grooves in a sliding mode, one side, away from the workpiece positioning seat, of each welding head is provided with a pushing block, the pushing blocks are linked with the welding heads, the axes of the sliding grooves are arranged at intervals in an annular mode with the workpiece positioning seat as the center, two adjacent pushing blocks are connected through rotating blocks, the middle of each rotating block is rotatably fixed with a fixed rod, two ends of each rotating block are rotatably fixed with the end of one pushing block respectively, the fixed rod is vertically arranged and fixed on the upper side of the bottom plate, and the pushing blocks and the rotating blocks form a connecting rod structure connected end to end; the surface of the welding head, which is used for being in contact with the pushing block, is an arc surface, and one end of the welding head, which is far away from the workpiece positioning seat, is fixed with a ball body capable of rotating automatically; the welding head is matched with a return spring, the return spring is sleeved on the welding head, a limiting part extending towards the outer side in the circumferential direction is arranged on the side, close to the pushing block, of the welding head, the return spring is located between the fixing block and the limiting part, the pushing block swings to abut against the welding head, and the return spring is compressed.

2. The multipoint synchronous spot welding mechanism for the motor shell and the protective sleeve as claimed in claim 1, wherein the pushing block or the rotating block is connected with an output end of a driving mechanism.

3. The multipoint synchronous spot welding mechanism for the motor shell and the protective sleeve as claimed in claim 1, wherein the rotating block is of an L-shaped structure, and the middle part of the rotating block is closer to the workpiece positioning seat than the two ends of the rotating block.

4. The multipoint synchronous spot welding mechanism for the motor shell and the protective sleeve as claimed in claim 2, wherein the pushing block extends to a side away from the workpiece positioning seat to form a connecting protrusion, the output end of the driving mechanism is rotatably connected with the connecting protrusion, the front end and the rear end of the pushing block with the connecting protrusion are respectively connected with a rotating block, and the output end of the driving mechanism moves back and forth to drive the pushing block with the connecting protrusion to move back and forth.

5. The multipoint synchronous spot welding mechanism for the motor shell and the protective sleeve as claimed in claim 1, wherein a linear bearing is fixed in the sliding groove.

6. The multipoint synchronous spot welding mechanism for the motor shell and the protective sleeve as claimed in claim 1, wherein the axes of the plurality of sliding grooves are uniformly spaced in a ring shape centered on the workpiece positioning seat.

7. The multipoint synchronous spot welding mechanism of the motor shell and the protective sleeve as claimed in claim 1, wherein the bottom of the fixing block is provided with a fixing portion, the fixing portion is formed with a strip-shaped groove, the axis of the strip-shaped groove is parallel to the axis of the sliding groove, the bottom plate is provided with a fixing hole, the fixing block is fixed with the bottom plate through a bolt, and the bolt penetrates through the strip-shaped groove and the fixing hole.