CN219665388U - Centering assembly for processing resistance welding annular airtight packaging - Google Patents

Abstract

The utility model provides a centering component for processing a resistance welding annular airtight package, which relates to the technical field of resistance welding packaging and is used for driving a piece to be sealed and a lower electrode to be coaxially arranged; comprises a fixed disc, a movable disc, a centering structure and a driving piece; the movable disc is arranged to rotate circumferentially relative to the fixed disc under the action of the driving piece; the upper end surface of the lower electrode is used for placing the to-be-sealed piece, and after the to-be-sealed piece and the lower electrode are coaxially positioned, the to-be-sealed piece is fixed through the vacuum adsorption piece; the centering structure comprises at least three limiting blocks, and each limiting block is positioned on the movable disc and is arranged in an array along the circumferential direction; when the movable disk is driven to rotate under the action of the driving piece, each limiting block swings towards the center of the lower electrode to gather while driving the follower disk to move circumferentially through the swinging mechanism, and the inner side faces of the limiting blocks are connected in parallel and respectively in tangential abutment with the peripheral wall of the piece to be sealed, so that the piece to be sealed and the lower electrode are coaxially arranged, and the problems that the positioning accuracy of the positioning structure of the existing annular packaging is poor and the adaptation range is small are solved.

Description

Centering assembly for processing resistance welding annular airtight packaging

Technical Field

The utility model relates to the technical field of resistance welding packaging, in particular to a centering component for processing resistance welding annular airtight packaging.

Background

Currently, some high-precision electronic components mostly need to be subjected to annular airtight packaging processing to ensure that the service life of the internal components is not impaired by the influence of external environmental factors, for example, some chips, components containing noble metals (such as gas sensitive elements and photosensitive elements) and the like, and in order to ensure the service life of the chips or the components, the chips or the components are usually sealed inside a sealing cap in an airtight packaging mode (commonly called sealing cap welding), so that the direct contact between external air, water gas and the like and the internal chips and the components is reduced or avoided;

however, during the packaging welding process, the accurate alignment of the sealing cap and the to-be-sealed piece is a critical ring in the packaging process, and is especially embodied on the to-be-sealed piece; if the positioning of the to-be-sealed piece and the sealing cap is not accurate, poor packaging such as welding deviation easily occurs or the internal chip and the device are damaged by pressure; or some photosensitive chips with transmitting/receiving function need to be aligned and sensed through the transparent window on the sealing cap, and the photosensitive chips with transmitting/receiving function cannot be positioned on the transparent window due to dislocation packaging, so that the photosensitive chips are judged to be defective products; in order to solve the above problems, the following two positioning methods are adopted in the prior art: the positioning is realized by arranging positioning grooves between two positioning blocks in a translational manner, the positioning blocks move from two sides of a piece to be packaged to the center of the piece to be packaged and clamp the piece to be packaged so as to be positioned in the positioning grooves for limiting, but in the practical process, the two split surfaces are easy to misplacement in relative alignment due to insufficient processing and manufacturing precision of the positioning blocks and vibration in the translational process, and finally, deviation occurs between a sealing cap and the piece to be welded, so that the positioning device can only be used as a large-scale product and has low requirements on misplacement accuracy; the other clamping is realized by a three-jaw positioning mode, namely three jaws are synchronously driven to radially translate towards the center of the piece to be packaged, so that the cambered surface at the front end of each jaw is in cohesion positioning with the piece to be packaged, although the centering clamping is realized in theory, in the practical application process, as each jaw is only limited and pushed by the rear end, the front end of each jaw loses limiting constraint in the process, and then is easy to swing or shake in the moving process, the centering effect of the final clamping is also poor, and the centering effect of the final clamping is poor, and is poor in adaptability, and cannot be matched with centering of pieces to be packaged with different outer diameters, namely the positioning groove of the positioning block or the cambered surface at the front end of each jaw;

in view of the foregoing, the centering structure of the existing annular package needs to be further improved and promoted.

Disclosure of Invention

The utility model discloses a centering component for processing a resistance welding annular airtight package, and aims to solve the problems of poor positioning precision and small adaptation range of the existing positioning structure of the annular package.

The utility model adopts the following scheme:

a centering component for processing a resistance welding annular airtight package, which is used for driving a piece to be sealed and a lower electrode to be coaxially arranged; comprises a fixed disc, a movable disc, a centering structure and a driving piece; the movable disc is arranged on the fixed disc and rotates circumferentially relative to the fixed disc under the action of the driving piece; the lower electrode is arranged in a hollow way and coaxially penetrates through the fixed disc and the movable disc; the upper end face of the lower electrode is used for placing the to-be-sealed piece, and after the to-be-sealed piece and the lower electrode are coaxially positioned, the to-be-sealed piece is fixed through a vacuum adsorption piece; the centering structure comprises at least three limiting blocks, and each limiting block is positioned on the movable disc and is arranged in an array along the circumferential direction; the limiting block is matched with the fixed disc and the movable disc through a swinging mechanism; when the movable disk rotates under the action of the driving piece, the swing mechanism drives each limiting block to swing and gather towards the center of the lower electrode while moving along with the circumferential direction of the movable disk, and the inner side faces of the limiting blocks are connected with the outer peripheral wall of the piece to be sealed in a parallel mode to be tangent and abutted to the outer peripheral wall of the piece to be sealed respectively, so that the piece to be sealed and the lower electrode are coaxially arranged.

As a further improvement, the swing mechanism comprises a rotation pin and a fixing pin; one end of the rotating pin is fixedly connected with the fixed disc, and the other end of the rotating pin penetrates through the arc-shaped groove of the movable disc and is hinged with the limiting block; one end of the fixing pin is fixed with the movable disc, and the other end of the fixing pin penetrates through the track groove of the limiting block and is used for guiding the limiting block to swing along the track of the track groove.

As a further improvement, a bearing is sleeved on the fixing pin, and the bearing is distributed corresponding to the track groove.

As a further improvement, the driving piece is an air cylinder, the air cylinder is connected with the movable disk in an adaptive manner through a connecting piece, a connecting shaft is arranged on the connecting piece and is used for being connected with a driving hole on the movable disk in an adaptive manner, and the length direction of the driving hole is perpendicular to the moving direction of the connecting piece, so that the linear movement of the connecting piece is converted into circumferential rotation of the movable disk.

The trigger switch is arranged on the motion track of the movable disk and is electrically connected with the control piece, and when the trigger part of the movable disk passes through the trigger switch, the trigger switch transmits a signal to the control piece so that the control piece drives all the components to operate in a matched mode.

As a further improvement, the device comprises a base for bearing the fixed disc, the movable disc and the lower electrode, wherein a sliding mechanism is arranged on the base, and the base is driven to move along a plane by the sliding mechanism so as to adjust the position of the lower electrode, so that the lower electrode is aligned with the upper electrode.

As a further improvement, the movable disc is sleeved on the fixed disc, a groove for reducing the contact area is formed in the side surface of the fixed disc, which is sleeved with the movable disc, and a sealing ring is arranged in the groove, so that the friction force of the movable disc relative to the fixed disc during rotation is limited.

By adopting the technical scheme, the utility model can obtain the following technical effects:

1. the utility model discloses a set up fixed disk, movable disk, centering structure and driving piece, the movable disk rotates at the relative fixed disk of driving piece's order about, and each stopper synchronous follow-up disk circumferential direction of driving centering structure when the movable disk rotates gathers together to the center swing of lower electrode to make the medial surface of each stopper tangent the support at treating a peripheral wall respectively, treat to seal and lower electrode location after, treat to seal through vacuum adsorption spare absorption, so that treat to seal and fix on the lower electrode. It is easy to understand that the inner side surface of each limiting block is tangent and abutted against the outer peripheral wall of the to-be-sealed piece to form a plurality of tangent points, and the to-be-sealed piece is positioned by utilizing the three-point positioning principle. The utility model adopts the point contact mode to position the points, can reduce the contact area, avoid the influence of poor processing precision such as arc surface contact, line contact and the like on the positioning accuracy, and further improve the positioning precision. In addition, the positioning is realized in a mode that the limiting block is tangent to the to-be-sealed piece, and the positioning device can be matched with the to-be-sealed piece with a plurality of sizes, so that the adaptation range of the centering assembly is improved.

2. The bearing is arranged on the fixing pin, so that the swing of the limiting block is smoother.

3. And a trigger switch electrically connected with the control member is arranged, so that the automation of the centering assembly is realized, and the production efficiency is improved.

4. The side that the fixed disk supply dish cup jointed is equipped with the recess, and disposes the sealing ring in the recess, and wherein the design of recess can reduce the area of contact between fixed disk side and the movable disk to reduce the influence of manufacturing factor, improve positioning accuracy. In addition, the sealing ring is arranged in the groove, so that the friction force between the movable disc and the fixed disc can be reduced while the limiting effect is ensured, and the smooth rotation of the movable disc is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a cross-sectional view of one embodiment of the present utility model;

FIG. 5 is an enlarged view of A in FIG. 4;

FIG. 6 is a schematic view of the structure of the present utility model when each limiting block is abutted against the to-be-sealed component tangentially;

FIG. 7 is a schematic view illustrating a structure of a stopper according to an embodiment of the present utility model;

fig. 8 is a schematic structural view of a movable disk according to an embodiment of the present utility model.

Icon:

1-a piece to be sealed;

2-a lower electrode; 21-a hollow channel;

3-fixing the disc; 31-a rotation pin; 32-grooves;

4-a movable disc; 41-arc grooves; 42-fixing pins; 43-drive hole; 44-triggering part;

5-limiting blocks; 51-track grooves;

6-a driving member;

7-connecting piece; 71-connecting shaft;

8-triggering a switch;

9-a base; 91-a bracket; 92-a first moving plate; 93-a second moving plate; 94-X axis driver; a 95-Y axis driver;

a1-upper electrode;

b1-sealing ring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Examples

With reference to fig. 1 to 7, the present embodiment provides a centering assembly for use in a resistance welding annular hermetic package process for driving a to-be-sealed member 1 coaxially disposed with a lower electrode 2. The centering assembly comprises a fixed disc 3, a movable disc 4, a centering structure and a driving piece 6. Wherein, the movable disk 4 is configured on the fixed disk 3 and rotates circumferentially relative to the fixed disk 3 under the action of the driving piece 6; the lower electrode 2 is arranged in a hollow way and coaxially penetrates through the fixed disc 3 and the movable disc 4; the upper end surface of the lower electrode 2 is used for placing the to-be-sealed piece 1, and after the to-be-sealed piece 1 and the lower electrode 2 are coaxially positioned, the to-be-sealed piece 1 is fixed through a vacuum absorption piece; the centering structure comprises at least three limiting blocks 5, and each limiting block 5 is positioned on the movable disk 4 and is arranged in an array along the circumferential direction; the limiting block 5 is matched with the fixed disc 3 and the movable disc 4 through a swinging mechanism; when the movable disk 4 rotates under the action of the driving piece 6, the swing mechanism drives each limiting block 5 to move along with the circumferential movement of the movable disk 4 and swing towards the center of the lower electrode 2, and the inner side surfaces of the limiting blocks 5 are connected in parallel and respectively tangentially abutted against the outer circumferential wall of the piece to be sealed 1, so that the piece to be sealed 1 and the lower electrode 2 are coaxially arranged.

Specifically, the vacuum adsorption member is communicated with the hollow channel 21 of the lower electrode 2, one end of the member to be sealed 1 is arranged in the hollow channel 21, and the other end is hung on the upper end face of the lower electrode 2.

When in use, the utility model is characterized in that:

(1) One end of the to-be-sealed piece 1 is put into the hollow channel 21 so that the other end of the to-be-sealed piece 1 is hung on the upper end face of the lower electrode 2;

(2) The driving piece 6 is started to drive the movable disk 4 to rotate forwards, so that each limiting block 5 is synchronously driven to swing towards the center of the lower electrode 2 and gather, and the inner side surface of each limiting block 5 is connected with the outer peripheral wall of the piece 1 to be sealed in a parallel manner to be tangent and abutted, so that the piece 1 to be sealed is coaxial with the lower electrode 2;

(3) Starting a vacuum adsorption part, and adsorbing the positioned part to be sealed 1 to fix the positions of the part to be sealed 1 and the lower electrode 2;

(4) The driving piece 6 drives the movable disk 4 to reversely rotate so as to enable each limiting block 5 to move in a direction away from the center of the lower electrode 2;

(6) The upper electrode A1 provided with the sealing cap is pressed down to be matched with the lower electrode 2 for welding operation;

(7) And after the sealing cap welding is finished, stopping the vacuum adsorption piece to loosen the packaged workpiece.

In this embodiment, the inner side surface of each limiting block 5 is tangent to the outer peripheral wall of the to-be-sealed member 1 to form a plurality of tangent points, so that the to-be-sealed member 1 is positioned by using the three-point positioning principle. By adopting the point contact mode, the contact area can be reduced, and the influence of poor processing precision such as arc surface contact and line contact on the positioning accuracy is avoided, so that the positioning accuracy is improved. In addition, the limiting block 5 is positioned in a tangential mode of the to-be-sealed piece 1, and can be matched with the to-be-sealed piece 1 with a plurality of sizes, so that the matching range of the centering assembly is improved.

In an alternative embodiment of the present utility model, based on the above embodiment, the swing mechanism includes the rotation pin 31 and the fixing pin 42; one end of the rotating pin 31 is fixedly connected with the fixed disc 3, and the other end of the rotating pin penetrates through the arc-shaped groove 41 of the movable disc 4 and is hinged with the limiting block 5; one end of the fixed pin 42 is fixed with the movable disk 4, and the other end of the fixed pin penetrates through the track groove 51 of the limiting block 5 and is used for guiding the limiting block 5 to swing along the track of the track groove 51. Preferably, the fixing pin 42 is sleeved with a bearing, and the bearing is arranged corresponding to the position of the track groove 51, so that the limit block 5 can swing smoothly. It is easy to understand that in the present embodiment, one end of the stopper 5 is hinged to the rotation pin 31 on the fixed disk 3, and the track groove 51 on the other end is adapted to the fixing pin 42 on the movable disk 4, and when the movable disk 4 rotates, the fixing pin 42 abuts against the track groove 51, so that the stopper 5 swings around the rotation pin 31 along the track of the track groove 51.

In another embodiment, the driving member 6 is an air cylinder, the air cylinder is connected with the movable disk 4 in an adaptive manner through the connecting member 7, the connecting member 7 is provided with a connecting shaft 71, the connecting shaft 71 is connected with the driving hole 43 on the movable disk 4 in an adaptive manner, and the length direction of the driving hole 43 is perpendicular to the moving direction of the connecting member 7, so that the linear movement of the connecting member 7 is converted into the circumferential rotation of the movable disk 4.

Preferably, the trigger switch 8 is further included, the trigger switch 8 is disposed on the motion track of the movable disc 4 and is electrically connected with the control member, and when the trigger portion 44 of the movable disc 4 passes through the trigger switch 8, the trigger switch 8 transmits a signal to the control member, so that the control member drives each component to cooperate. For example, the upper electrode A1, the lower electrode 2, the driving member 6 and the vacuum absorbing member are all electrically connected with a control member, the movable disk 4 extends outwards to form a trigger portion 44, the control member can be a PCB, a PLC or the like, and the working process of each component is as follows:

(1) The control piece drives the driving piece 6 to drive the connecting piece 7 to move forward so as to enable the movable disk 4 to rotate in the forward direction, and when each limiting block 5 is tangentially abutted against the piece 1 to be sealed, the triggering part 44 passes through the triggering switch 8 for the first time;

(2) The trigger switch 8 transmits a signal to the control member to enable the control member to drive the vacuum adsorption member to start;

(3) The driving piece 6 is driven to drive the connecting piece 7 to move reversely so as to drive the movable disc 4 to rotate reversely;

(4) The second time passes through the trigger switch 8 in the process of the reverse rotation of the movable disk 4, the trigger switch 8 sends a signal to the control element again, so that the control element drives the upper electrode A1 to be pressed down.

Further, a base 9 for carrying the fixed plate 3, the movable plate 4 and the lower electrode 2 is also included, and the base 9 includes a bracket 91, a first moving plate 92 and a second moving plate 93. The bracket 91 is fixedly connected with the fixed disk 3 and is configured on a first moving plate 92, the first moving plate 92 is used for being connected with an X-axis driver 94 of a sliding mechanism, the second moving plate 93 is used for being connected with a Y-axis driver 95 of the sliding mechanism, the first moving plate 92 is driven to move along the X-axis direction by the X-axis driver 94, and the second moving plate 93 is driven to move along the Y-axis direction by the Y-axis driver 95, so that the position of the lower electrode 2 is correspondingly adjusted, and the lower electrode 2 is aligned with the upper electrode A1. The structure of the driver may be a screw structure, and is not limited thereto, and is not particularly limited.

In a preferred embodiment, the movable disk 4 is sleeved on the fixed disk 3, a groove 32 is arranged on the side surface of the fixed disk 3, which is sleeved with the movable disk 4, and the contact area between the movable disk 4 and the fixed disk 3 can be reduced by the groove 32, so that the influence of processing and manufacturing factors on positioning precision is avoided. In addition, a seal ring B1 is disposed in the groove 32 to limit a friction force when the movable disk 4 rotates relative to the fixed disk 3, so as to ensure that the movable disk 4 can smoothly rotate relative to the fixed disk 3.

The utility model discloses a set up fixed disk, movable disk, centering structure and driving piece, the movable disk rotates at the relative fixed disk of driving piece's order about, and each stopper synchronous follow-up disk circumferential direction of driving centering structure when the movable disk rotates gathers together to the center swing of lower electrode to make the medial surface of each stopper tangent the support at treating a peripheral wall respectively, treat to seal and lower electrode location after, treat to seal through vacuum adsorption spare absorption, so that treat to seal and fix on the lower electrode. It is easy to understand that the inner side surface of each limiting block is tangent and abutted against the outer peripheral wall of the to-be-sealed piece to form a plurality of tangent points, and the to-be-sealed piece is positioned by utilizing the three-point positioning principle. The utility model adopts the point contact mode to position the points, can reduce the contact area, avoid the influence of poor processing precision such as arc surface contact, line contact and the like on the positioning accuracy, and further improve the positioning precision. In addition, the positioning is realized in a mode that the limiting block is tangent to the to-be-sealed piece, and the positioning device can be matched with a plurality of to-be-sealed pieces with the sizes, so that the adaptation range of the centering assembly is improved; the bearing is arranged on the fixed pin, so that the swing of the limiting block is smoother; the trigger switch electrically connected with the control piece is arranged, so that automation of the centering assembly is realized, and the production efficiency is improved; the side that the fixed disk supply dish cup jointed is equipped with the recess, and disposes the sealing ring in the recess, and wherein the design of recess can reduce the area of contact between fixed disk side and the movable disk to reduce the influence of manufacturing factor, improve positioning accuracy. In addition, the sealing ring is arranged in the groove, so that the friction force between the movable disc and the fixed disc can be reduced while the limiting effect is ensured, and the smooth rotation of the movable disc is ensured.

The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model.

Claims (7)

1. A centering component for processing a resistance welding annular airtight package, which is used for driving a piece to be sealed and a lower electrode to be coaxially arranged; the device is characterized by comprising a fixed disc, a movable disc, a centering structure and a driving piece;

the movable disc is arranged on the fixed disc and rotates circumferentially relative to the fixed disc under the action of the driving piece;

the lower electrode is arranged in a hollow way and coaxially penetrates through the fixed disc and the movable disc; the upper end face of the lower electrode is used for placing the to-be-sealed piece, and after the to-be-sealed piece and the lower electrode are coaxially positioned, the to-be-sealed piece is fixed through a vacuum adsorption piece;

the centering structure comprises at least three limiting blocks, and each limiting block is positioned on the movable disc and is arranged in an array along the circumferential direction; the limiting block is matched with the fixed disc and the movable disc through a swinging mechanism; when the movable disk rotates under the action of the driving piece, the swing mechanism drives each limiting block to swing and gather towards the center of the lower electrode while moving along with the circumferential direction of the movable disk, and the inner side faces of the limiting blocks are connected with the outer peripheral wall of the piece to be sealed in a parallel mode to be tangent and abutted to the outer peripheral wall of the piece to be sealed respectively, so that the piece to be sealed and the lower electrode are coaxially arranged.

2. The centering assembly for a resistance welding annular hermetic package process of claim 1, wherein the wobble mechanism comprises a rotation pin and a fixed pin; one end of the rotating pin is fixedly connected with the fixed disc, and the other end of the rotating pin penetrates through the arc-shaped groove of the movable disc and is hinged with the limiting block; one end of the fixing pin is fixed with the movable disc, and the other end of the fixing pin penetrates through the track groove of the limiting block and is used for guiding the limiting block to swing along the track of the track groove.

3. The centering assembly for the processing of the electric resistance welding annular airtight package according to claim 2, wherein the fixing pin is sleeved with a bearing, and the bearing is arranged at a position corresponding to the track groove.

4. The centering assembly for electric resistance welding annular airtight packaging processing according to claim 1, wherein the driving member is an air cylinder, the air cylinder is connected with the movable disc in an adaptive manner through a connecting member, a connecting shaft is arranged on the connecting member and is used for being connected with a driving hole on the movable disc in an adaptive manner, and the length direction of the driving hole is perpendicular to the moving direction of the connecting member, so that the linear movement of the connecting member is converted into circumferential rotation of the movable disc.

5. The centering assembly for resistance welding annular airtight packaging processing according to claim 1, comprising a trigger switch, wherein the trigger switch is arranged on a motion track of the movable disc and is electrically connected with a control member, and when a trigger part of the movable disc passes through the trigger switch, the trigger switch transmits a signal to the control member so that the control member drives each member to cooperate.

6. The centering assembly for use in a resistance welding annular hermetic package process of claim 1, comprising a base for carrying the stator, rotor and lower electrode, the base having a slide mechanism thereon, the base being urged to move along a plane via the slide mechanism for adjusting the position of the lower electrode such that the lower electrode is aligned with the upper electrode.

7. The centering assembly for use in a resistance welding annular hermetic package according to any one of claims 1-6, wherein the movable disk is sleeved on the fixed disk, a groove for reducing a contact area is provided on a side surface of the fixed disk for the movable disk to be sleeved, and a seal ring is disposed in the groove, so as to limit a friction force when the movable disk rotates relative to the fixed disk.