CN115052473B

CN115052473B - Patch method and apparatus

Info

Publication number: CN115052473B
Application number: CN202210876567.XA
Authority: CN
Inventors: 赵凯; 梁猛; 林海涛; 李益; 王菲; 徐娜
Original assignee: Shanghai Shiyu Precision Equipment Co ltd
Current assignee: Shanghai Shiyu Precision Equipment Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2023-07-25
Anticipated expiration: 2042-07-25
Also published as: CN115052473A

Abstract

The invention provides a method and equipment for sticking, wherein alcohol is sprayed on the back of a soldering lug, after the soldering lug is placed on a substrate, the alcohol volatilizes to form vacuum, so that the soldering lug is adsorbed on the substrate, the position of the soldering lug can be kept fixed in the subsequent process, and the defect that the soldering lug is easy to shake on the substrate to influence the subsequent welding in the prior art is overcome.

Description

Patch method and apparatus

Technical Field

The invention belongs to the technical field of surface mounting, and particularly relates to a surface mounting method and device.

Background

In the process of soldering components on a substrate, a solder feeding tray feeds a solder bar to a solder cutting device, the solder cutting device cuts the solder bar into solder tabs, and a manipulator places the solder tabs on the substrate as solder, so that the components can be soldered on the substrate by the solder.

In the conventional process, after the soldering lug is placed on the substrate, the soldering lug is liable to shake during the subsequent process, so that the position of the soldering lug is changed, and the subsequent soldering is affected.

Disclosure of Invention

Based on the above, a method and apparatus for attaching a solder tab to avoid wobbling are provided.

In order to solve the technical problems, the invention adopts the following technical scheme:

in one aspect, the present invention provides a method for attaching a patch, comprising:

sucking up the soldering lug from the front side of the soldering lug;

spraying alcohol on the back of the sucked soldering lug;

and placing the soldering lug after spraying the alcohol on a substrate, and vacuum adsorbing the soldering lug on the substrate after the alcohol on the back surface of the soldering lug volatilizes.

In another aspect, the present invention provides a patch device, including:

a suction head for sucking or releasing the soldering lug, wherein the suction head is provided with a downward vacuum suction cup;

a manipulator for driving the suction head to move to a suction position above the solder cutting device, a spraying position above the alcohol spraying device and a placing position above the substrate;

the alcohol spraying device is used for spraying alcohol on the back of the soldering lug on the suction head at the spraying position and comprises a spray head for vertically spraying alcohol upwards, the spray head comprises a spray head body and an electromagnetic valve, the electromagnetic valve is connected with an inlet of the spray head body, and the electromagnetic valve is connected with a liquid outlet of the high-pressure alcohol tank through a conveying pipe.

According to the invention, the alcohol is sprayed on the back surface of the soldering lug, after the soldering lug is placed on the substrate, the alcohol volatilizes to form vacuum, so that the soldering lug is adsorbed on the substrate, the position of the soldering lug can be kept fixed in the subsequent process, and the defect that the soldering lug is easy to shake on the substrate to influence subsequent welding in the prior art is overcome.

Drawings

FIG. 1 is a flow chart of a method of the present invention;

fig. 2 is a schematic structural diagram of a patch device according to the present invention;

FIG. 3 is a schematic view of the structure of the alcohol spraying apparatus according to the present invention;

FIG. 4 is a schematic view of the structure of the spray head body of the present invention;

FIG. 5 is a schematic structural view of the high-pressure alcohol tank of the present invention;

FIG. 6 is a schematic view of a solder cutting device according to the present invention;

fig. 7 is a schematic side view of the cutter according to the present invention.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings. The embodiments described in the present specification are not intended to be exhaustive or to represent the only embodiments of the present invention. The following examples are presented for clarity of illustration of the invention of the present patent and are not intended to limit the embodiments thereof. It will be apparent to those skilled in the art that various changes and modifications can be made in the embodiment described, and that all the obvious changes or modifications which come within the spirit and scope of the invention are deemed to be within the scope of the invention.

As shown in fig. 1, an embodiment of the present disclosure provides a method for attaching a patch, including:

s101, sucking the soldering lug from the front surface of the soldering lug.

S102, spraying alcohol on the back surface of the sucked soldering lug.

S103, placing the soldering lug after spraying the alcohol on the substrate.

The alcohol on the back of the soldering lug volatilizes to form vacuum, so that the soldering lug is adsorbed on the substrate, the position of the soldering lug can be kept fixed in the subsequent process, and the defect that the soldering lug is easy to shake on the substrate to influence the subsequent welding in the prior art is overcome.

Based on the same inventive concept, as shown in fig. 2, the embodiment of the present disclosure further provides a patch device, including a suction head 1100, a manipulator 1200, and an alcohol spraying apparatus 1300.

The suction head 1100 is used to hold or release a soldering lug, and the suction head 1100 is provided with a plurality of vacuum suction cups facing downwards.

The manipulator 1200 is used for driving the suction head 1100 to move to a suction position above the solder cutting device, a spraying position above the alcohol spraying device 1300, and a placement position above the substrate, which can drive the suction head 1100 to move in three directions of XYZ, and detailed structures of the manipulator 1200 are not described here.

As shown in fig. 3 and 5, the alcohol spraying apparatus 1300 for spraying alcohol on the rear surface of a soldering lug on a suction head 1100 at a spraying position includes a housing 1310, a plurality of spray heads 1320 for spraying alcohol vertically upward, and a high pressure alcohol tank 1330.

A transfer pool 1311 is arranged in the shell 1310, the transfer pool 1311 is fixed with the rear side plate of the shell 1310, and a joint 1312 is arranged on the left side plate of the shell 1310.

The plurality of showerheads 1320 are arranged side by side left and right and correspond to the plurality of vacuum chucks one by one.

Each spray head 1320 includes a spray head body 1321 and a solenoid valve 1322.

As shown in fig. 4, the nozzle body 1321 has a columnar shape, and an outlet 1321a and an inlet 1321b are provided at the upper end and the lower end of the nozzle body 1321, respectively, a hollow needle body 1321c is provided inside the nozzle body 1321, and both ends of the needle body 1321c are respectively communicated with the outlet 1321a and the inlet 1321b of the nozzle body.

The solenoid valve 1322 of each spray head 1320 is connected to the inlet 1321b of the corresponding spray head body 1321 and to the staging pond 1311.

A spray head body 1321 of the plurality of spray heads 1320 protrudes from a top of the housing 1310.

As shown in fig. 5, a top cover is provided at the top of the high-pressure alcohol tank 1330, an air inlet 1331 for inputting high-pressure air is provided on the top cover, a liquid outlet 1332 is provided at the bottom, a liquid level sensor 1333 is provided at the side of the high-pressure alcohol tank 1330, and alcohol can be injected by opening the top cover. When the level sensor 1333 detects that the alcohol level has reached the target low level, the system will sound an alarm.

Each solenoid valve 1322 is connected to a fluid outlet 1332 of a high pressure canister 1330 through a delivery tube.

The conveying pipe comprises a first pipe and a second pipe, the first pipe is connected between the transfer tank 1311 and the joint 1312, and the second pipe is connected between the joint 1312 and a liquid outlet 1332 of the high-pressure alcohol tank 1330.

In operation, high pressure gas is supplied to the inlet 1331 of the high pressure alcohol tank 1330 to provide pressure for the alcohol therein, and the solenoid valve 1322 is controlled to open to close the valve so that a target amount of alcohol can be ejected upward through the head body 1321.

The target amount of alcohol passes through the needle 1321c at a high speed under pressure, so that the alcohol can be sprayed to the back of the soldering lug at a high speed in the form of a water column, and thus the alcohol can be uniformly sprayed to the back of the soldering lug, the falling back of the alcohol is greatly reduced, and the falling back of the alcohol is prevented from damaging equipment.

As shown in fig. 4, in order to collect a small amount of alcohol that may fall back, the outlet 1321a of the head body 1321 is a bell mouth that gradually widens from bottom to top.

In this embodiment, as shown in fig. 6, the solder cutting device 1400 includes a stationary chuck 1410, a movable chuck 1420, and a cutter 1430.

The static chuck 1410 is used for horizontally clamping the welding rod 2 up and down, the movable chuck 1420 is used for horizontally clamping the welding rod 2 up and down, and horizontally moves back and forth, and the static chuck 1410 and the movable chuck 1420 are used for alternately clamping or releasing the welding rod.

The cutter 1430 is provided for cutting the welding rod, which is provided at the front side of the movable clamp 1420.

In operation, the static chuck 1410 is first in a released state, the movable chuck 1420 clamps the head of the welding rod 2 led out from the solder feeding tray 3 at an initial position, and pulls the head end of the welding rod 2 horizontally forward to the cutting position of the cutter 1430 for cutting by the cutter 1430.

It should be noted that, when the tip end of the welding rod 2 is located at the cutting position, the front end face of the tip end is located at the front side of the cutting edge of the cutter 1430, and the distance L between the front end face and the cutting edge is the length of the welding piece cut from the welding rod 2.

After one cutting is completed, the movable clamp 1420 releases the welding rod and returns to the initial position, in the process, the static clamp 1410 clamps the welding rod 2, and the position of the welding rod when cut is always kept, so that when the movable clamp 1420 again pulls the head end of the welding rod 2 to the cutting position, the distance L is within the target precision (+ -0.02 mm), and the cut welding pieces are ensured to be within the target precision each time.

The elastic rings (not shown) are embedded on the clamping surfaces of the static clamping head 1410 and the movable clamping head 1420, so that the friction force between the static clamping head 1410 and the welding rod 2 can be increased, the static clamping head 1410 and the movable clamping head 1420 clamp the welding rod more stably, and the precision of the welding lug can be improved.

In the present embodiment, the static chuck 1410 includes a first static block 1411, a first movable block 1412, and a first mechanism for driving the first movable block 1412 to move up and down on the first static block 1411, and the movable chuck 1420 includes a second static block 1421, a second movable block 1422, a second mechanism for driving the second movable block 1422 to move up and down on the second static block 1421, and a third mechanism for driving the second static block 1421 and the second movable block 1422 to move horizontally back and forth.

As shown in fig. 6, the top surface of the first static block 1411 has a left-right distributed stopper 1411a and a stopper column 1411b, and the top surface of the second static block 1421 has a left-right distributed stopper 1421a and a stopper column 1421b, so that a channel through which the welding rod 2 passes horizontally is formed on the top surfaces of the first static block 1411 and the second static block 1421.

The elastic rings are embedded in the bottom surfaces of the first moving block 1412 and the second moving block 1422.

The cutter 1430 includes a stationary blade 1431, a movable blade 1432 provided on the front side of the stationary blade 1431, a blade holder 1433, and a fourth mechanism for driving the blade holder 1433 to lift, the stationary blade 1431 is vertically arranged and faces forward and backward, a material opening 1431a corresponding to the above-mentioned passage and through which the welding rod 2 passes horizontally is provided thereon, the movable blade 1432 is detachably inserted horizontally forward and backward on the blade slot of the blade holder 1433, as shown in fig. 7, the rear end of the movable blade 1432 forms a cutting edge 1432a, the cutting edge 1432a is attached to the stationary blade 1431, and is located on the lower side of the material opening 1431 a.

When the cutter 1430 works, the fourth mechanism drives the cutter rest 1433 to rise to drive the movable blade 1432 to rise, so that the cutting edge 1432a cuts off the welding rod 2 from bottom to top, the sucking position is slightly higher than the highest position of the movable blade 1432, when the movable blade 1432 cuts off a welding piece and lifts the welding piece to the highest position, the suction head 1100 positioned at the sucking position can just suck the welding piece, and after the cutting action is finished, the fourth mechanism drives the cutter rest 1433 to descend, so that the movable blade 1432 returns to the original position.

In order to overcome this problem, a spring pressing piece 1435 is provided at the front end of the movable blade 1432, and the spring pressing piece 1435 applies a backward pressure to the front end of the movable blade 1432, so as to keep the cutting edge 1432a of the movable blade 1432 attached to the stationary blade 1431, see fig. 6 and 7.

It should be noted that the first mechanism, the second mechanism, the third mechanism and the fourth mechanism are all conventional mechanisms, and are not described herein.

It will be apparent to those skilled in the art that the above embodiments are provided for illustration only and not for limitation of the invention, and that variations and modifications of the above described embodiments are intended to fall within the scope of the claims of the invention as long as they fall within the true spirit of the invention.

Claims

1. A patch device, comprising:

the alcohol spraying device is used for spraying alcohol on the back surface of the soldering lug on the suction head at the spraying position and comprises a spray head for vertically spraying alcohol upwards, the spray head comprises a spray head body and an electromagnetic valve, the electromagnetic valve is connected with an inlet of the spray head body, and the electromagnetic valve is connected with a liquid outlet of the high-pressure alcohol tank through a conveying pipe;

and placing the soldering lug after spraying the alcohol on a substrate, so that the soldering lug is adsorbed on the substrate.

2. The patch device according to claim 1, wherein the nozzle body is columnar, the upper end and the lower end of the nozzle body are respectively provided with an outlet and an inlet, a hollow needle body is arranged in the nozzle body, and two ends of the needle body are respectively communicated with the outlet and the inlet of the nozzle body.

3. A patch device as claimed in claim 2, wherein the outlet of the nozzle body is a flare which widens from bottom to top.

4. A patch device according to claim 3, wherein the alcohol spraying apparatus further comprises a housing, a transfer tank is provided in the housing, a connector is provided on the housing, the plurality of spray heads are arranged side by side and connected with the transfer tank through respective electromagnetic valves, the spray head bodies of the plurality of spray heads extend out from the top of the housing, the delivery pipe comprises a first pipe and a second pipe, the first pipe is connected between the transfer tank and the connector, and the second pipe is connected between the connector and a liquid outlet of the high-pressure alcohol tank.

5. The patch device of claim 4, wherein the plurality of vacuum cups is one-to-one with the plurality of nozzles.

6. A patch device as claimed in any one of claims 1 to 5, wherein the top of the high pressure alcohol tank has an inlet for the high pressure gas, the bottom has the outlet, and the side of the high pressure alcohol tank is provided with a liquid level sensor.

7. A chip mounter according to claim 6, wherein said solder cutting means includes:

a static chuck for clamping the welding rod horizontally up and down;

the movable clamping head is arranged at the front side of the static clamping head, the movable clamping head and the static clamping head are used for clamping or releasing the welding rod in a staggered manner, and elastic rings are embedded on clamping surfaces of the static clamping head and the movable clamping head;

and the cutter is used for cutting off the welding rod from bottom to top and is arranged at the front side of the movable chuck.

8. The surface mounting device according to claim 7, wherein the static chuck comprises a first static block, a first movable block and a first mechanism for driving the first movable block to ascend and descend in the first static block, the movable chuck comprises a second static block, a second movable block, a second mechanism for driving the second movable block to ascend and descend in the second static block and a third mechanism for driving the second static block and the second movable block to horizontally move back and forth, the top surfaces of the first static block and the second static block form a channel for a welding rod to horizontally pass through, and the bottom surfaces of the first movable block and the second movable block are embedded with the elastic ring;

the cutter comprises a static blade, a movable blade arranged at the front side of the static blade, a cutter rest and a fourth mechanism for driving the cutter rest to lift, wherein the static blade is vertically arranged and faces forward and backward, a material opening which corresponds to the channel and is used for allowing welding rods to pass through horizontally is formed in the front and back direction, the movable blade is horizontally fixed on the cutter rest, a cutting edge is formed at the rear end of the movable blade, and the cutting edge is attached to the static blade and is located at the lower side of the material opening.

9. A patch device as claimed in claim 8, wherein the cutter further comprises a spring blade for holding the cutting edge of the movable blade against the stationary blade, the spring blade exerting a rearward pressure on the front end of the movable blade.