CN114985996A

CN114985996A - Compressing device applied to laser welding

Info

Publication number: CN114985996A
Application number: CN202210854648.XA
Authority: CN
Inventors: 杨会敏; 施兴旺
Original assignee: Shenzhen Xinsiji Information Technology Co ltd
Current assignee: Shenzhen Xinsiji Information Technology Co ltd
Priority date: 2022-07-16
Filing date: 2022-07-16
Publication date: 2022-09-02
Anticipated expiration: 2042-07-16
Also published as: CN114985996B

Abstract

The application discloses a pressing device applied to laser welding, which comprises a vacuum adsorption mechanism and a pressing frame mechanism, wherein the vacuum adsorption mechanism comprises a vacuum adsorption seat and a vacuum tube, the vacuum adsorption seat is provided with a cavity, the upper surface of the vacuum adsorption seat is provided with a plurality of vacuum adsorption holes, the upper surface of the vacuum adsorption seat is used for abutting against the lower surface of a substrate, and the vacuum tube is used for connecting a vacuum power source; the pressure frame mechanism is including pressing frame and lift driving piece, press the frame to include two pressure arms and two linking arms, two press the arm with two the linking arm is connected and is formed frame-shaped structure, two press the arm to be used for compressing tightly the base plate, two the lower surface of linking arm is higher than two press the lower surface of arm, the drive of lift driving piece press the frame lift to remove. This application compresses tightly the stability of carrying the base plate of camera FPC module through closing device to improve laser welding's quality.

Description

Compressing device applied to laser welding

Technical Field

The application relates to the technical field of camera module, especially relate to the closing device who is applied to laser welding.

Background

In the process of processing the camera module, the substrate (consisting of a high-temperature base film and a supporting plate frame) is operated in different processes. The high-temperature base film has certain viscidity, pastes in the bracket bottom, and the base plate middle part that forms has the adhesion region that can supply FPC module rule adhesion to in carry out the attached process of chip to the FPC module, the attached process of chip includes some glue (also called to glue) step, pastes and puts chip step, laser paster step in proper order.

The apparatus used in the chip attach process includes: a conveying channel (assembly line), a dispensing mechanism, a chip transfer mechanism, a chip pasting and placing mechanism and a laser fixing mechanism. The substrate is conveyed along the conveying channel.

In the process, the FPC module is placed on the substrate, but in the production area of the camera module, due to factors such as equipment operation vibration and the like, the stability of the substrate is weak, and the laser welding quality of the FPC module is affected.

Disclosure of Invention

In order to solve among the prior art because of factors such as equipment office vibration influence the firm degree of base plate to influence the problem of the laser welding quality of FPC module, this application provides the closing device who is applied to laser welding.

The application provides a be applied to laser welding's closing device adopts following technical scheme:

the pressing device applied to laser welding comprises a vacuum adsorption mechanism and a pressing frame mechanism, wherein the vacuum adsorption mechanism comprises a vacuum adsorption seat and a vacuum tube, the vacuum adsorption seat is provided with a cavity, the upper surface of the vacuum adsorption seat is provided with a plurality of vacuum adsorption holes, the upper surface of the vacuum adsorption seat is used for abutting against the lower surface of a substrate, and the vacuum tube is used for connecting a vacuum power source; the pressure frame mechanism is including pressing frame and lift driving piece, press the frame to include two pressure arms and two linking arms, two press the arm with two the linking arm is connected and is formed frame-shaped structure, two press the arm to be used for compressing tightly the base plate, two the lower surface of linking arm is higher than two press the lower surface of arm, the drive of lift driving piece press the frame lift to remove.

By adopting the technical scheme, when the substrate carried with the FPC module moves to the upper part of the vacuum adsorption seat, the cavity of the vacuum adsorption seat forms vacuum degree under the action of the vacuum power source, namely the inner cavity of the vacuum adsorption seat forms negative pressure, so that the vacuum adsorption hole of the vacuum adsorption seat forms adsorption action on the lower surface of the substrate. When the base plate was located vacuum adsorption seat top, the pressure frame of pressing a mechanism moved down and compressed tightly the double-phase offside of base plate, and pressure frame mechanism and vacuum adsorption seat form clamping action to the base plate, made the position of base plate more stable to do benefit to the guarantee to the precision of FPC module point glue and welding.

Optionally, the vacuum adsorption seat is provided with a plurality of sealing sleeves, the sealing sleeves are arranged in one-to-one correspondence with the vacuum adsorption holes, each sealing sleeve comprises a tubular wall and a sealing flange, the tubular walls and the vacuum adsorption holes are matched in a penetrating mode, the upper ends of the vacuum adsorption holes are provided with counter bores used for avoiding the sealing flanges, the upper edges of the sealing flanges are higher than the edges of the counter bores, and the sealing flanges are used for abutting against the lower surfaces of the substrates.

By adopting the technical scheme, the tubular wall of the sealing sleeve is matched with the vacuum adsorption hole in a penetrating way, so that the sealing sleeve is positioned on the vacuum adsorption seat; when the base plate is located the vacuum adsorption seat top and receives the vacuum adsorption effect, the sealing flange butt lower surface of base plate of seal cover makes the seal cover form sealed effect to the vacuum adsorption hole to do benefit to and reduce in the air gets into the cavity of vacuum adsorption seat through the vacuum adsorption hole, thereby be favorable to improving the vacuum adsorption effect of vacuum adsorption seat. The upper edge of the sealing flange is higher than the edge of the counter bore, and when the lower surface of the substrate is in contact with the upper surface of the vacuum adsorption seat, the sealing flange is deformed under pressure, so that the sealing flange can better play a sealing role.

Optionally, one end of the tubular wall, which is far away from the sealing flange, is provided with a clamping flange, the clamping flange is positioned on the inner side of the vacuum adsorption seat, and the clamping flange is abutted to the inner side edge of the vacuum adsorption hole.

Through adopting above-mentioned technical scheme, the joint flange of seal cover blocks the inboard edge in vacuum adsorption hole, is favorable to hindering the tubular wall of seal cover to deviate from the vacuum adsorption hole to be favorable to guaranteeing the stability of being connected between seal cover and the vacuum adsorption seat.

Optionally, the lower surface of the vacuum adsorption seat is provided with a spring connection seat, the upper surface of the vacuum adsorption seat is embedded with a plurality of first magnets, the pressure arm is provided with a plurality of second magnets, and when the pressure arm presses the substrate, the magnetic attraction between the first magnets and the second magnets forces the vacuum adsorption seat to move upwards until the vacuum adsorption seat is attached to the lower surface of the substrate; when the pressure arm leaves the base plate, the spring connecting seat forces the vacuum adsorption seat to move downwards, and a gap is formed between the sealing flange and the lower surface of the base plate.

By adopting the technical scheme, the vacuum adsorption seat can be connected with an external component through the spring connecting seat, when the pressure arm presses the substrate tightly, the upper surface of the vacuum adsorption seat is kept attached to the lower surface of the substrate through the magnetic attraction force between the first magnet and the second magnet, so that the sealing flange is pressed and deformed, and the sealing sleeve can better play a sealing role; when the pressure arm leaves the substrate, the spring drives the vacuum adsorption seat to move downwards, so that a gap is formed between the vacuum adsorption seat and the substrate, and the subsequent substrate is not easy to interfere with the vacuum adsorption seat when moving to the position above the vacuum adsorption seat.

Optionally, the upper surface of the sealing flange is provided with a plurality of concentrically arranged annular grooves.

Through adopting above-mentioned technical scheme, the annular groove that is located sealing flange upper surface makes sealing flange's intensity weaken, and comparatively easily produce when making sealing flange pressurized and warp, through setting up the annular groove, when being favorable to the lower surface contact of sealing flange and base plate, sealing flange's surface can form multiple hindrance effect to the air that gets into the vacuum adsorption seat inboard, is favorable to further improving sealing flange's sealed effect.

Optionally, the lifting driving part is connected with one of the connecting arms of the pressing frame, and the included angle between the lifting driving direction of the lifting driving part and the length direction of the two pressing arms is an obtuse angle.

By adopting the technical scheme, the lifting driving piece is connected with one connecting arm of the pressing frame, so that the situation that the lifting driving piece obstructs the dispensing and laser welding processes is reduced; one side of pressure frame is connected to the lift driving piece, make the magnetic attraction between first magnet and the second magnet form the longer arm of force to the pressure frame in the connection position of lift driving piece, the direction of drive through making the lift driving piece is the obtuse angle with the length direction's of two pressure arms contained angle, make the pressure frame be close to or keep away from the base plate with the route of slope, magnetic attraction between first magnet and the second magnet is mainly along vertical, make the magnetic attraction between first magnet and the second magnet difficult hindrance lift driving piece drive pressure frame leave the base plate, even make the lift driving piece comparatively easily drive the pressure frame and leave the base plate.

Optionally, the second magnet includes a horizontal portion and two vertical portions, the horizontal portion is connected with the upper portion of the vertical portion, an insertion gap is formed between the two vertical portions, the second magnet is inserted into the pressure arm along the vertical direction, and the horizontal portion abuts against the upper surface of the pressure arm.

Through adopting above-mentioned technical scheme, the second magnet is followed vertical grafting with the pressure arm, makes to be connected between second magnet and the pressure arm comparatively convenient.

Optionally, the pressure arm is equipped with the guide block, the guide block is made by ferromagnetic material, the guide block with the second magnet is followed the length direction dislocation set of pressure arm, the guide block is equipped with first spigot surface, the second magnet is close to one side of guide block is equipped with the second spigot surface, the second magnet with magnetic attraction has between the guide block, first spigot surface with the laminating of second spigot surface, vertical portion's vertical size in edge is greater than the pressure arm is along vertical size, works as when the pressure arm compresses tightly the base plate, the second magnet is relative the pressure arm upward displacement, just the second spigot surface forces the second magnet is close to along the horizontal direction removal first magnet.

By adopting the technical scheme, the second magnet is connected with the guide block in a sliding manner along the contact surface between the first guide surface and the second guide surface, when the pressing arm presses the substrate, the substrate forces the second magnet to move upwards relative to the pressing arm, and the second guide surface forces the second magnet to be close to the first magnet along the horizontal direction, so that the magnetic attraction between the first magnet and the second magnet is gradually increased; when the substrate leaves the substrate, the second magnet moves downwards relative to the pressure arm under the action of the magnetic attraction between the first magnet and the second magnet to abut against the upper surface of the pressure arm at the transverse part, and meanwhile, the magnetic attraction between the first magnet and the second magnet is gradually reduced when the second magnet is far away from the first magnet along the horizontal direction, so that the resistance of the lifting driving piece driving the pressure frame to leave the substrate is further reduced; simultaneously because the magnetic attraction between first magnet and the second magnet reduces gradually, be favorable to reducing the momentum that the spring holder resumes the deformation in-process to reduce the shake when spring drive vacuum adsorption seat resets, thereby reduce the condition that the vacuum adsorption seat shakes the collision base plate.

Optionally, the vacuum adsorption seat includes an adsorption seat main body with a shell-shaped structure, the adsorption seat main body is provided with a downward opening, the adsorption seat main body is detachably connected with a lower sealing plate, and the cavity is formed between the lower sealing plate and the adsorption seat main body; the clamping device comprises clamping flanges, clamping sleeves and connecting wires, wherein the clamping flanges are arranged on the two sides of the clamping flanges, the clamping sleeves are connected with the clamping flanges through the connecting wires, the clamping flanges are clamped on the clamping flanges, and the clamping sleeves are clamped on the clamping flanges.

Through adopting above-mentioned technical scheme, the vacuum adsorption seat can be dismantled for adsorbing seat main part and lower shrouding, makes the comparatively easy machine-shaping of vacuum adsorption seat. The connecting wires are connected with the sealing sleeves at the same time, so that the sealing sleeves are not easy to be separated from the vacuum adsorption holes in the using process, and the sealing sleeves are kept on the vacuum adsorption seats.

Optionally, the inner surface of the top wall of the vacuum adsorption seat is provided with a rubber film, and the inner side of the top wall of the vacuum adsorption seat is detachably connected with a pressing plate with a frame-shaped structure.

Through adopting above-mentioned technical scheme, the vacuum tube is to vacuum adsorption seat suction air, makes the interior negative pressure that produces of vacuum adsorption seat, and the rubber membrane warp under the effect of negative pressure in order to form the negative pressure adsorption to vacuum adsorption hole position, and the rubber membrane can hinder dust or cracked connecting wire entering vacuum tube, is favorable to protecting vacuum power source equipment.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the substrate is positioned above the vacuum adsorption seat, the pressing frame of the pressing frame mechanism moves downwards to press two opposite sides of the substrate tightly, and the pressing frame mechanism and the vacuum adsorption seat form a clamping effect on the substrate, so that the position of the substrate is more stable, and the dispensing and welding precision of the FPC module is guaranteed;

2. when the base plate is located the vacuum adsorption seat top and receives the vacuum adsorption effect, the sealing flange butt lower surface of base plate of seal cover makes the seal cover form sealed effect to the vacuum adsorption hole to do benefit to and reduce in the air gets into the cavity of vacuum adsorption seat through the vacuum adsorption hole, thereby be favorable to improving the vacuum adsorption effect of vacuum adsorption seat.

Drawings

Fig. 1 is a schematic view of the entire structure of embodiment 1.

FIG. 2 is a schematic view showing a state of use of example 1.

FIG. 3 is a schematic view of the entire structure of embodiment 2.

Fig. 4 is a sectional view of a vacuum suction base of embodiment 2.

Fig. 5 is a partial enlarged view at B in fig. 4.

Fig. 6 is a partial enlarged view at a in fig. 3.

Fig. 7 is a sectional view of a vacuum chuck according to embodiment 3.

Fig. 8 is a partial enlarged view at C in fig. 7.

Description of reference numerals: 1. a vacuum adsorption mechanism; 11. a vacuum adsorption base; 12. a vacuum tube; 111. a cavity; 112. a vacuum adsorption hole; 113. an adsorption base main body; 114. an opening; 115. a lower sealing plate; 116. a sealing gasket; 117. a bolt; 118. a counter bore; 2. a frame pressing mechanism; 21. pressing a frame; 211. pressing the arm; 212. a connecting arm; 213. a vertical short column; 22. a lifting drive member; 3. sealing sleeves; 31. a tubular wall; 32. a sealing flange; 321. an annular groove; 33. clamping the flanges; 4. a connecting wire; 5. a spring connecting seat; 51. a spring; 52. a base body; 53. a guide bar; 521. a guide hole; 6. a first magnet; 7. a second magnet; 61. a transverse portion; 62. a vertical portion; 63. a splicing gap; 8. a guide block; 81. a first guide surface; 64. a second guide surface; 9. a rubber film; 10. a stud; 20. pressing a plate; 201. a through hole; 101. a nut; 30. a substrate; 40. a conveying track.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

Example 1

The embodiment of the application discloses closing device who is applied to laser welding. Referring to fig. 1 and 2, the pressing device applied to laser welding includes a vacuum suction mechanism 1 and a pressing frame mechanism 2, and a mounting position of the vacuum suction mechanism 1 is lower than a mounting position of a substrate 30. When the conveying rail 40 conveys the substrate 30 to the upper side of the vacuum adsorption mechanism 1, the vacuum adsorption mechanism 1 performs an adsorption action on the lower surface of the substrate 30, and simultaneously the frame pressing mechanism 2 presses the support frame of the substrate 30 downward, so that the substrate 30 is clamped.

Referring to fig. 2, the vacuum adsorption mechanism 1 includes a vacuum adsorption base 11 and a vacuum tube 12, the vacuum adsorption base 11 has a cavity 111, the upper surface of the vacuum adsorption base 11 has a plurality of vacuum adsorption holes 112 communicating with the cavity 111, and the vacuum tube 12 is used for connecting the vacuum adsorption base 11 and a vacuum power source. When the substrate 30 moves above the vacuum chuck 11, the upper surface of the vacuum chuck 11 abuts against the lower surface of the substrate 30, and the vacuum power source vacuumizes the inner cavity of the vacuum chuck 11 through the vacuum tube 12, so that the vacuum chuck 11 can suck the lower surface of the substrate 30 through the vacuum suction holes 112.

Referring to fig. 2, the pressing frame mechanism 2 includes a pressing frame 21 and a lifting driving member 22, the lifting driving member 22 is an air cylinder, the pressing frame 21 includes two pressing arms 211 and two connecting arms 212, the two pressing arms 211 are connected with the two connecting arms 212 to form a frame structure, two ends of the connecting arms 212 are respectively connected with ends of the two pressing arms 211 through vertical short posts 213, the two pressing arms 211 are used for pressing the substrate 30, a length direction of the pressing arms 211 is parallel to a conveying direction of the substrate 30, the connecting arms 212 are located above the two pressing arms 211, so that a lower surface of the connecting arms 212 is higher than a lower surface of the pressing arms 211, and the connecting arms 212 avoid the FPC module located on the substrate 30. The lifting driving member 22 and the pressing frame 21 are arranged in a staggered manner along the horizontal direction, the lifting driving member 22 is connected with one connecting arm 212 of the pressing frame 21, and the lifting driving member 22 drives the pressing frame 21 to move up and down.

The embodiment of the application is applied to the implementation principle of the pressing device for laser welding and comprises the following steps: when the substrate 30 carrying the FPC module moves above the vacuum chuck 11, the cavity 111 of the vacuum chuck 11 is vacuumed under the action of the vacuum power source, that is, the cavity of the vacuum chuck 11 is negatively pressurized, so that the vacuum holes 112 of the vacuum chuck 11 can absorb the lower surface of the substrate 30. When the substrate 30 is located above the vacuum adsorption seat 11, the pressing frame 21 of the pressing frame mechanism 2 moves downwards to press two opposite sides of the substrate 30, and the pressing frame mechanism 2 and the vacuum adsorption seat 11 form a clamping effect on the substrate 30, so that the position of the substrate 30 is more stable, and the precision of dispensing and welding the FPC module is guaranteed.

Example 2

Referring to fig. 3 and 4, the present embodiment is different from embodiment 1 in that: the vacuum adsorption base 11 comprises an adsorption base main body 113 with a shell-shaped structure, the adsorption base main body 113 is provided with a downward opening 114, the adsorption base main body 113 is detachably connected with a lower sealing plate 115, and a cavity 111 is formed between the lower sealing plate 115 and the adsorption base main body 113; a sealing washer 116 surrounding the opening 114 is arranged between the adsorption seat main body 113 and the lower sealing plate 115, the lower sealing plate 115 is connected with the adsorption seat main body 113 through a bolt 117, the bolt 117 is connected with the lower sealing plate 115 in a penetrating manner, the bolt 117 is in threaded connection with the adsorption seat main body 113, and when the bolt 117 is locked, the lower sealing plate 115 and the adsorption seat main body 113 jointly press the sealing washer 116.

Referring to fig. 3 and 5, the vacuum adsorption base 11 is provided with a plurality of sealing sleeves 3, the sealing sleeves 3 are arranged in one-to-one correspondence with the vacuum adsorption holes 112, each sealing sleeve 3 includes a tubular wall 31, one end of each tubular wall 31 is provided with a sealing flange 32, the other end of each tubular wall 31 is provided with a clamping flange 33, the tubular walls 31 and the vacuum adsorption holes 112 are in penetrating fit, the sealing flanges 32 are located outside the adsorption base main body 113, the clamping flanges 33 are located in the cavities 111 of the vacuum adsorption base 11 and abut against the inner walls of the cavities 111, the sealing flanges 32 and the clamping flanges 33 enable the positions between the sealing sleeves 3 and the vacuum adsorption base 11 along the axial direction of the sealing sleeves 3 to be kept stable, the upper ends of the vacuum adsorption holes 112 are provided with counter bores 118 for avoiding the sealing flanges 32, the upper edges of the sealing flanges 32 are higher than the edges of the counter bores 118, and the sealing flanges 32 are used for abutting against the lower surface of the substrate 30.

When the vacuum adsorption seat 11 adsorbs the lower surface of the substrate 30, the sealing flange 32 is simultaneously pressed by the lower surface of the substrate 30 and the bottom wall of the counter bore 118, so that the sealing flange 32 seals the vacuum adsorption hole 112, and the sealing sleeve 3 seals the vacuum adsorption hole 112, thereby being beneficial to ensuring the adsorption effect of the vacuum adsorption seat 11 on the substrate 30.

Referring to fig. 4, be connected with connecting wire 4 between each seal cover 3 jointly, connecting wire 4 uses non-deformable's high-strength line, specifically if polyester cotton high-strength line, dacron high-strength line etc. 4 ligature connection seal covers 3 are close to the one end of joint flange 33, and connecting wire 4 is located the inboard of adsorption seat main part 113, and connecting wire 4 is in the state of tightening. The sealing sleeves 3 of the connecting wire 4 are connected through the connecting wire 4, so that the situation that the sealing sleeves 3 are separated from the vacuum adsorption holes 112 is further reduced. In another embodiment, a connecting wire 4 may be additionally provided to connect one end of each sealing sleeve 3 near the sealing flange 32, so that the connection of each sealing sleeve 3 is more stable.

Referring to fig. 3, four spring connection seats 5 are disposed on the lower surface of the lower sealing plate 115, each spring connection seat 5 includes a spring 51 and a seat 52, one end of each spring 51 is fixedly connected to the sealing plate, the other end of each spring 51 is connected to the seat 52, and the seat 52 is used for connecting external components such as an equipment rack.

Referring to fig. 3, four guide rods 53 are vertically and fixedly disposed on the lower surface of the lower sealing plate 115, the four guide rods 53 are respectively located inside the four springs 51, the base 52 is provided with guide holes 521 for allowing the guide rods 53 to slide, and the guide rods 53 guide the expansion and contraction of the springs 51 and the vertical movement of the vacuum suction base 11.

Referring to fig. 3 and 6, the pressure arm 211 is provided with two first magnets 6, two sets of second magnets 7 are embedded on the upper surface of the vacuum adsorption seat 11, the number of each set of second magnets 7 is two, the two sets of second magnets 7 respectively correspond to the first magnets 6 on the two pressure arms 211, when the pressure arm 211 presses the substrate 30, a magnetic attraction force is generated between the second magnets 7 and the first magnets 6 to force the vacuum adsorption seat 11 to move upwards to a position where the vacuum adsorption seat is attached to the lower surface of the substrate 30 against the elastic force of the spring 51; when the pressing arm 211 is separated from the substrate 30, the vacuum suction base 11 is forced to move downward to be reset by the elastic force of the spring 51, and a gap is formed between the sealing flange 32 and the lower surface of the substrate 30.

The magnetic attraction of the first magnet 6 and the second magnet 7 support forces the vacuum adsorption seat 11 to move upwards to be attached to the substrate 30, so that the sealing sleeve 3 can play a sealing role; the spring 51 forces the vacuum chuck 11 to move downward and return to the original position, so that a gap is formed between the sealing flange 32 and the lower surface of the substrate 30, thereby reducing the interference between the subsequent substrate 30 and the vacuum chuck 11 when moving above the vacuum chuck 11.

Referring to fig. 5, the upper surface of the sealing flange 32 is provided with two concentric annular grooves 321, and the annular grooves 321 make the sealing flange 32 more easily deformed when being pressed, so as to make the lower surface of the substrate 30 fit the upper surface of the vacuum chuck 11.

Referring to fig. 3, an included angle between the lifting driving direction of the lifting driving member 22 and the length direction of the two pressing arms 211 is an obtuse angle. By making the included angle between the driving direction of the lifting driving member 22 and the length direction of the two pressing arms 211 an obtuse angle, the pressing frame 21 is made to approach or separate from the substrate 30 in an inclined path, so that the magnetic attraction force between the first magnet 6 and the second magnet 7 along the vertical direction is hard to hinder the lifting driving member 22 from driving the pressing frame 21 to separate from the substrate 30, i.e. the lifting driving member 22 is easy to drive the pressing frame 21 to separate from the substrate 30.

Referring to fig. 6, the first magnet 6 includes a horizontal portion 61 and two vertical portions 62, the horizontal portion 61 is connected to an upper portion of the vertical portion 62, an insertion gap 63 is formed between the two vertical portions 62, the first magnet 6 is vertically inserted into the pressing arm 211, and the horizontal portion 61 abuts against an upper surface of the pressing arm 211.

Referring to fig. 6, a guide block 8 is fixedly disposed on the upper surface of the pressing arm 211, the guide block 8 is made of a ferromagnetic material, such as iron, cobalt or nickel metal and an alloy material thereof, the guide block 8 and the first magnet 6 are disposed in a staggered manner along the length direction of the pressing arm 211, the guide block 8 is provided with a first guide surface 81, one side of the first magnet 6 close to the guide block 8 is provided with a second guide surface 64, magnetic attraction force is provided between the first magnet 6 and the guide block 8, the first guide surface 81 is attached to the second guide surface 64, the vertical dimension of the vertical portion 62 is greater than the vertical dimension of the pressing arm 211, when the pressing arm 211 presses the substrate 30, the first magnet 6 is displaced upward relative to the pressing arm 211, and the second guide surface 64 forces the first magnet 6 to move horizontally close to the second magnet 7.

The second magnet 7 and the guide block 8 are connected in a sliding manner along a contact surface between the first guide surface 81 and the second guide surface 64, when the pressing arm 211 presses the substrate 30, the substrate 30 forces the second magnet 7 to move upwards relative to the pressing arm 211, and the second guide surface 64 forces the second magnet 7 to approach the first magnet 6 along the horizontal direction, so that the magnetic attraction force between the first magnet 6 and the second magnet 7 is gradually increased; when the substrate 30 leaves the substrate 30, the second magnet 7 moves downward relative to the pressing arm 211 under the action of the magnetic attraction between the first magnet 6 and the second magnet 7 to abut against the upper surface of the pressing arm 211, and meanwhile, when the second magnet 7 is away from the first magnet 6 along the horizontal direction, the magnetic attraction between the first magnet 6 and the second magnet 7 is gradually reduced, which is beneficial to further reducing the resistance of the lifting driving member 22 to drive the pressing frame 21 to leave the substrate 30.

Example 3

Referring to fig. 7 and 8, the present embodiment is different from embodiment 1 in that: the inner surface of the top wall of the vacuum adsorption seat 11 is provided with a rubber film 9, and the inner side of the top wall of the vacuum adsorption seat 11 is provided with a pressing plate 20 with a frame-shaped structure; the inner side surface of the top wall of the vacuum adsorption seat 11 is vertically and fixedly provided with a plurality of studs 10, the pressing plate 20 is provided with through holes 201 for the studs 10 to penetrate through, the studs 10 are in threaded connection with nuts 101, and the nuts 101 abut against the lower surface of the pressing plate 20.

The pressing plate 20 is pressed against the edge portion of the rubber film 9 by the lock nut 101. When the vacuum power source vacuumizes the vacuum adsorption seat 11 through the vacuum tube 12, the rubber film 9 deforms under the action of negative pressure, so that the vacuum adsorption hole 112 can produce vacuum adsorption effect on the substrate 30, and the rubber film can prevent dust or broken connecting wires 4 from entering the vacuum tube 12, thereby being beneficial to protecting vacuum power source equipment.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. Be applied to closing device of laser welding, its characterized in that: the vacuum adsorption device comprises a vacuum adsorption mechanism (1) and a pressing frame mechanism (2), wherein the vacuum adsorption mechanism (1) comprises a vacuum adsorption seat (11) and a vacuum tube (12), the vacuum adsorption seat (11) is provided with a cavity (111), the upper surface of the vacuum adsorption seat (11) is provided with a plurality of vacuum adsorption holes (112), the upper surface of the vacuum adsorption seat (11) is used for abutting against the lower surface of a substrate (30), and the vacuum tube (12) is used for being connected with a vacuum power source; the pressure frame mechanism (2) is including pressing frame (21) and lift driving piece (22), press frame (21) to include two pressure arms (211) and two linking arms (212), two pressure arm (211) and two linking arm (212) are connected and are formed frame-shaped structure, two pressure arm (211) are used for compressing tightly base plate (30), two the lower surface of linking arm (212) is higher than two the lower surface of pressure arm (211), lift driving piece (22) drive press frame (21) to go up and down to move.

2. The pressing device for laser welding according to claim 1, wherein: vacuum adsorption seat (11) are equipped with a plurality of seal casings (3), seal casing (3) with vacuum adsorption hole (112) one-to-one sets up, seal casing (3) are including tubular wall (31) and sealing flange (32), tubular wall (31) with vacuum adsorption hole (112) wear to establish the adaptation, the upper end of vacuum adsorption hole (112) is equipped with and is used for dodging counter bore (118) of sealing flange (32), the top edge of sealing flange (32) is higher than the edge of counter bore (118), sealing flange (32) are used for the lower surface of butt base plate (30).

3. The pressing device for laser welding according to claim 2, wherein: tubular wall (31) are kept away from the one end of sealing flange (32) is equipped with joint flange (33), joint flange (33) are located the inboard of vacuum adsorption seat (11), joint flange (33) butt the inboard edge of vacuum adsorption hole (112).

4. The pressing device for laser welding according to claim 2, wherein: the lower surface of the vacuum adsorption seat (11) is provided with a spring connecting seat (5), the upper surface of the vacuum adsorption seat (11) is embedded with a plurality of first magnets (6), the pressure arm (211) is provided with a plurality of second magnets (7), and when the pressure arm (211) presses the substrate (30), the vacuum adsorption seat (11) is forced to move upwards by magnetic attraction between the first magnets (6) and the second magnets (7) until the lower surface of the substrate (30) is attached; when the pressure arm (211) leaves the base plate (30), the spring connecting seat (5) forces the vacuum suction seat (11) to move downwards, and a gap is formed between the sealing flange (32) and the lower surface of the base plate (30).

5. The pressing device for laser welding according to claim 4, wherein: the upper surface of the sealing flange (32) is provided with a plurality of annular grooves (321) which are arranged concentrically.

6. The pressing device for laser welding according to claim 4, wherein: the lifting driving part (22) is connected with one of the connecting arms (212) of the pressing frame (21), and the included angle between the lifting driving direction of the lifting driving part (22) and the length direction of the two pressing arms (211) is an obtuse angle.

7. The pressing device for laser welding according to claim 4, wherein: the second magnet (7) comprises a transverse part (61) and two vertical parts (62), the transverse part (61) is connected with the upper parts of the vertical parts (62), an insertion gap (63) is formed between the two vertical parts (62), the second magnet (7) is vertically inserted into the pressing arm (211), and the transverse part (61) is abutted to the upper surface of the pressing arm (211).

8. The pressing device for laser welding according to claim 7, wherein: the pressure arm (211) is provided with a guide block (8), the guide block (8) is made of ferromagnetic material, the guide block (8) and the second magnet (7) are arranged along the length direction of the pressure arm (211) in a staggered manner, the guide block (8) is provided with a first guide surface (81), one side of the second magnet (7) close to the guide block (8) is provided with a second guide surface (64), the second magnet (7) and the guide block (8) have magnetic attraction, the first guide surface (81) is attached to the second guide surface (64), the vertical dimension of the vertical part (62) is larger than the vertical dimension of the press arm (211), when the pressing arm (211) presses the substrate (30), the second magnet (7) is displaced upward relative to the pressing arm (211), and the second guide surface (64) forces the second magnet (7) to move closer to the first magnet (6) in a horizontal direction.

9. The pressing device for laser welding according to claim 3, wherein: the vacuum adsorption seat (11) comprises an adsorption seat main body (113) with a shell-shaped structure, the adsorption seat main body (113) is provided with a downward opening (114), the adsorption seat main body (113) is detachably connected with a lower sealing plate (115), and the cavity (111) is formed between the lower sealing plate (115) and the adsorption seat main body (113); connecting wires (4) are connected between the sealing sleeves (3), the connecting wires (4) are connected with one ends, close to the clamping flanges (33), of the sealing sleeves (3), the connecting wires (4) are located on the inner side of the adsorption base main body (113), and the connecting wires (4) are in a tightened state.

10. The pressing device for laser welding according to claim 9, wherein: the inner surface of the top wall of the vacuum adsorption seat (11) is provided with a rubber film (9), and the inner side of the top wall of the vacuum adsorption seat (11) is detachably connected with a pressing plate (20) with a frame-shaped structure.