CN116618780A - A fully automatic chip tinning operation equipment and tinning method thereof - Google Patents

Abstract

The invention discloses a full-automatic chip tinning operation equipment and a tinning method thereof, comprising: a feeding mechanism and an unloading mechanism movably arranged on an X-axis moving mechanism, and the loading mechanism and the unloading mechanism both include the same Two suction rods and two suction cups arranged on the axis; flux tank, flux activation unit, degold unit, tinning unit, hot air leveling unit and blanking vision camera arranged in sequence along the axis. The fully automatic chip tinning operation equipment and tinning method provided by the invention can automatically identify chips of different sizes and different types based on vision guidance, and complete the fully automatic process of automatic identification and automatic tinning operation.

Description

A fully automatic chip tinning operation equipment and tinning method thereof

technical field

The invention relates to a fully automatic chip tinning operation device, in particular to a fully automatic chip tinning operation device and a tinning method thereof.

Background technique

There are the following problems in the existing tinning operation mode:

1. Repeated programming and debugging of each different chip is used to realize the tinning operation of chips of different sizes and types; however, since each chip of different sizes and types needs to be reprogrammed, complex verification is required for each chip, Obtain the process parameters and then set them up. During the programming process, the process parameters need to be verified by repeated samples. The programming process is complicated, the changeover time is long, and the professional knowledge of personnel is required to be high, which restricts the development of the chip application industry;

2. Traditional tinning equipment can only achieve fixed tinning operations, and has poor adjustment to important process links such as dipping flux and tin in the tinning process, poor tinning applicability and low tinning pass rate; usually the pass rate is 50 -70%;

3. The traditional tinning machine adopts a single-cycle operation mode in which a multi-axis robot extracts one chip at a time for tinning, and the efficiency is low. Generally, the tinning efficiency of 60 chips per hour can only be achieved;

4. The applicability of the traditional tinning machine is very poor. A set of equipment is intelligently suitable for tinning of a single type of chip. Different chip types such as DIP, QFP and SMD need to be invested in different equipment for tinning operation, and the input cost is high.

Contents of the invention

The purpose of the present invention is to provide a fully automatic chip tinning operation equipment and its tinning method, which is used to solve the need for complex process verification and equipment programming for new specifications and new types of chips in traditional tinning equipment, and the time required for changing models. Long, low efficiency, poor operability, high defect rate; poor applicability.

In order to achieve the above object, the present invention provides the following technical solutions: a fully automatic chip tinning operation equipment, comprising:

The feeding mechanism and the unloading mechanism that are movably arranged on the X-axis moving mechanism, the loading mechanism and the unloading mechanism both include two suction rods and two suction cups arranged coaxially;

The flux tank, flux activation unit, degold unit, tinning unit, hot air leveling unit and blanking vision camera are arranged in sequence along the axis.

As preferably, both the feeding mechanism and the unloading mechanism include a frame, and the frame is provided with a hydraulic telescopic rod, and the output end of the hydraulic telescopic rod is fixedly installed with a machine head that is slidably arranged on the frame, so A tilting motor is symmetrically installed on the machine head, and the tilting motor is respectively used to drive the deflection of the suction rod and the suction cup.

Preferably, an auxiliary bracket is fixedly installed on the machine head of the feeding mechanism, a light source box is installed on the auxiliary bracket, a first visual camera is installed on the side wall of the machine head, and the axis of the first visual camera The center is coaxial with the center of the light box.

Preferably, the light source box is specifically a direction transparent glass cover, and an LED light strip is arranged inside the direction transparent glass cover.

As a preference, the loading mechanism and the unloading mechanism respectively have a starting station on the X-axis moving mechanism;

It also includes a Y-axis feeding mechanism arranged on the two starting stations, and the Y-axis feeding mechanism at least includes a feeding table driven to keep the Y-axis moving.

Preferably, the flux activation unit includes an activation chamber, and a partition is arranged in the activation chamber, and a plurality of interconnected cavities are separated in the activation chamber through the partition;

At least two chip chucks are arranged in the cavity.

Preferably, both the degold unit and the tin enamel unit include a tin bath, and a plurality of heating rods are arranged in the tin bath.

Preferably, the hot air leveling unit includes a hot air leveling air knife edge and a liquid storage cylinder arranged directly below the hot air leveling air knife edge;

The edge of the hot air leveling air knife is specifically funnel-shaped, its narrow opening faces the liquid storage cylinder, and a hot air blower is connected to the outside.

A tinning method for chip tinning, comprising the fully automatic chip tinning operation equipment described in the above scheme to prepare chips, the steps are as follows:

S001. Manually place the chips on the feeding table, and the feeding table is driven by the Y-axis feeding mechanism to move directly below the feeding mechanism;

S002. The first visual camera starts to identify the chip from the acupoints in the first row and first column of the feeding table, and determines the coordinates and angles of the center position of the chip, and at the same time identifies all the specifications and features of the chip, and guides the subsequent real-time analysis through visual software analysis. tinning process;

S003. After the identification is completed, the feeding mechanism aligns the first suction cup to the center of the chip, and the first suction rod reaches a vertical downward angle driven by the tilt motor. At this time, the Z axis corresponding to the first suction cup extends to On the surface of the chip, the first sucker sucks the chip to complete the picking of a chip, the first vision camera is positioned again, and the second sucker picks up the second chip by the same steps;

S004. After picking up, according to the chip angle recognized by the camera, the two chip suction cups drive the two suction rods to rotate through the tilt motor to adjust the angle, and correct the XY direction angle of the chip;

S005. After the angle is corrected, the X-axis moving mechanism drives the feeding mechanism to move, and moves the two chips to the top of the flux tank. The tilt motor drives the chips, and the hydraulic telescopic rod extends out to insert the chip pins Flux liquid level, complete the dipping of the pins on the first side of the chip with flux, then the hydraulic telescopic rod shrinks, and the tilting motor rotates 90 degrees to complete the dipping of the pins on the second side of the chip;

S006, after step 5 is completed, the X-axis moving mechanism drives the two chips to move above the flux activation unit, the tilt motor is adjusted vertically, and the chips are put into the activation chamber for flux activation treatment;

S007. The X-axis moving mechanism drives the two chips to move above the gold removal unit, the tilt motor adjusts the tilt, and the hydraulic telescopic rod extends downwards out of the tin bath to probe the pins on the first side of the chip into The tin liquid is degolded. After one side is completed, the hydraulic telescopic rod rises, and the tilt motor rotates 90 degrees to complete the degolding of the second side pins, and sequentially complete the degolding of the four side pins;

S008. The X-axis moving mechanism drives the chip to the tinning unit, the tilting motor adjusts the tilt, and the hydraulic telescopic rod extends downwards to probe the pins on the first side of the chip into the tin liquid for tinning treatment. After the side is completed, the hydraulic telescopic rod is raised, and the tilt motor is adjusted and rotated by 90 degrees to complete the tinning of the second side pins, and sequentially complete the tinning of the four side pins;

S009. The X-axis moving mechanism drives the chip to the top of the hot air leveling unit, the tilt motor adjusts the tilt, and the hydraulic telescopic rod extends to move the bottom front end of the chip to the hot air leveling knife edge, and then the chip is Adjust the horizontal state, and then slowly pass the hot air to level the air knife edge as the X-axis moving mechanism moves;

S010. The X-axis moving mechanism drives the chip to the blanking vision camera, and the tilting motor adjusts the tilt to make the chip horizontally flat and vertically angled, and images the chip from the lower part to perform tinning inspection;

S011. After passing the inspection, the X-axis moving mechanism drives the feeding platform of the unloading station where the chips move, and the tilting motor adjusts the vertical, and aligns the first sucker with the first row of the feeding platform. The first acupuncture point in the column is discharged in turn.

In the above technical solution, the present invention provides a fully automatic chip tinning operation equipment and tinning method thereof, which have the following beneficial effects: automatically identify chips of different sizes and different types based on visual guidance, complete automatic identification, and automatically Fully automated process for tinning operations.

It has completely changed the disadvantages of the original tinning equipment and realized a fully automated chip tinning operation. Through automatic visual identification of the type of chip as single-sided, double-sided or four-sided pins, tinning can be performed automatically according to the number of sides, and the shell can be identified at the same time Body length and width, pin length, pin pitch, chip thickness and other important chip specification parameters; all specification parameters of the chip are calculated by software, and the tinning equipment can be automatically guided to carry out the tinning operation, and the tinning operation can be performed without equipment programming , to realize the fully automatic tinning process of the chip tinning process, which greatly improves the yield and work efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings that are required in the embodiments. Obviously, the accompanying drawings in the following description are only described in the present invention For some embodiments of the present invention, those skilled in the art can also obtain other drawings according to these drawings.

Fig. 1 is the overall structural schematic diagram provided by the embodiment of the present invention;

Fig. 2 is a schematic structural view of a feeding mechanism provided by an embodiment of the present invention;

Fig. 3 is a schematic structural view of a degold unit and a tin enamel unit provided by an embodiment of the present invention;

Figure 4 is a schematic structural view of a hot air leveling unit provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a flux activation unit provided by an embodiment of the present invention.

Explanation of reference signs:

1. X-axis moving mechanism; 11. Feeding mechanism; 12. Unloading mechanism; 2. Flux tank; 3. Flux activation unit; 31. Activation chamber; 32. Chip sucker; 4. Degold unit; 5. 6. Hot air leveling unit; 61. Hot air leveling air knife edge; 62. Liquid storage cylinder; 7. Blanking visual camera; 8. Y-axis feeding mechanism; 81. Feeding table; 100. Suction rod; 101. Suction cup; 200, frame; 201, hydraulic telescopic rod; 202, head; 203, tilt motor; 204, first vision camera; 300, accessory bracket; 301, light source box; 500, tin bath; 501, heating rod.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1-5, a fully automatic chip tinning operation equipment includes: a loading mechanism 11 and a blanking mechanism 12 that are movably arranged on the X-axis moving mechanism 1, and the loading mechanism 11 and the blanking mechanism 12 are both It includes two suction rods 100 and two suction cups 101 arranged coaxially; flux tank 2, flux activation unit 3, degold unit 4, tinning unit 5, hot air leveling unit 6 and blanking vision arranged in sequence along the axis camera7.

Further, both the feeding mechanism 11 and the unloading mechanism 12 include a frame 200, on which a hydraulic telescopic rod 201 is arranged, and the output end of the hydraulic telescopic rod 201 is fixedly installed with a machine head 202 slidingly arranged on the frame 200, Tilting motors 203 are symmetrically installed on the machine head 202, and the tilting motors 203 are respectively used to drive the suction rod 100 and the suction cup 101 to deflect.

Furthermore, the head 202 of the feeding mechanism 11 is fixedly equipped with an auxiliary bracket 300, the light source box 301 is installed on the auxiliary bracket 300, the side wall of the head 202 is equipped with a first visual camera 204, and the first visual camera 204 axis It is coaxial with the center of the light source box 301.

Furthermore, the light source box 301 is specifically a direction transparent glass cover, and an LED light strip is arranged in the direction transparent glass cover.

Wherein, the X-axis moving mechanism 1 in the above-mentioned embodiment includes a guide rail frame, a screw mandrel that is rotatably arranged on the guide rail frame, and a drive motor that drives the screw mandrel to rotate. The feeding mechanism 11 and the unloading mechanism 12 in the embodiment are both The frame 200 all slides on the guide rail frame, and is driven by two screw rods to move independently.

In the above-mentioned technology, based on the vision-guided automatic recognition of chips of different sizes and different types, the fully automatic process of automatic recognition and automatic tin enamel operation is completed.

It has completely changed the disadvantages of the original tinning equipment and realized a fully automated chip tinning operation. Through automatic visual identification of the type of chip as single-sided, double-sided or four-sided pins, tinning can be performed automatically according to the number of sides, and the shell can be identified at the same time Body length and width, pin length, pin pitch, chip thickness and other important chip specification parameters; all specification parameters of the chip are calculated by software, and the tinning equipment can be automatically guided to carry out the tinning operation, and the tinning operation can be performed without equipment programming , to realize the fully automatic tinning process of the chip tinning process, which greatly improves the yield and work efficiency.

As an embodiment further provided by the present invention, as shown in FIG. 1 , the loading mechanism 11 and the unloading mechanism 12 are located on the X-axis moving mechanism 1 and have a starting station respectively;

It also includes a Y-axis feeding mechanism 8 arranged on the two starting stations. The Y-axis feeding mechanism 8 at least includes a feeding table 81 driven to keep the Y-axis moving.

Specifically, the Y-axis feeding mechanism 8 in the embodiment also includes a guide rail frame, a screw rod rotatably arranged on the guide rail frame, and a drive motor to drive the screw rod to rotate. The above screw rod is used to drive the feeding table 81 to move.

As another embodiment further provided by the present invention, the flux activation unit 3 includes an activation bin 31, a partition is arranged in the activation bin 31, and a plurality of interconnected cavities are separated in the activation bin 31 by the partition; At least two chip chucks 32 are arranged in the body.

As yet another embodiment further provided by the present invention, both the degold unit 4 and the tin enamel unit 5 include a tin bath 500 , and a plurality of heating rods 501 are arranged in the tin bath 500 .

As yet another embodiment further provided by the present invention, the hot air leveling unit 6 includes a hot air leveling air knife edge 61 and a liquid storage cylinder 62 arranged directly below the hot air leveling air knife edge 61;

The hot air leveling air knife edge 61 is specifically funnel-shaped, and its narrow mouth faces the liquid storage cylinder 62, and a hot air blower is connected outside.

A tinning method for chip tinning, fully automatic chip tinning operation equipment to prepare chips, the steps are as follows:

S001. Manually place the chips on the feeding table 81, and the feeding table 81 is driven by the Y-axis feeding mechanism 8 to move directly below the feeding mechanism 11;

S002. The first visual camera 204 starts to identify the chip from the acupuncture points in the first row and the first column of the feeding table 81, and determines the coordinates and angles of the center position of the chip, and at the same time identifies all the specifications and features of the chip, and guides subsequent real-time testing through visual software analysis. tinning process;

S003. After the identification is completed, the feeding mechanism 11 will align the first suction cup 101 to the center of the chip, and the first suction rod 100 will reach a vertical downward angle driven by the tilt motor 203. At this time, the first suction cup 101 corresponds to The Z axis extends to the surface of the chip, the first sucker 101 sucks the chip, completes the picking of a chip, the first visual camera 204 is positioned again, and the second sucker 101 picks up the second chip by the same steps;

S004. After picking up, the two chip suction cups drive the two suction rods 100 to rotate through the tilt motor 203 to adjust the angle according to the chip angle recognized by the camera, and correct the XY direction angle of the chip;

S005. After the angle is corrected, the X-axis moving mechanism 1 drives the feeding mechanism 11 to move, and moves the two chips to the top of the flux tank 2, and the tilt motor 203 drives the chips, and the hydraulic telescopic rod 201 stretches out, and the chip pins Insert the flux liquid level to complete the dipping of the pins on the first side of the chip with flux, then the hydraulic telescopic rod 201 shrinks, and the tilt motor 203 rotates 90 degrees to complete the dipping of the pins on the second side of the chip;

S006, after step five is completed, the X-axis moving mechanism 1 drives the two chips to move above the flux activation unit 3, the tilt motor 203 is adjusted vertically, and the chips are put into the activation chamber 31 for flux activation treatment;

S007. The X-axis moving mechanism 1 drives the two chips to move to the top of the de-gold unit 4, the tilt motor 203 adjusts the tilt, the hydraulic telescopic rod 201 extends downward from the tin bath 500, and probes the pins on the first side of the chip into the tin liquid. Carry out degolding treatment, after one side is completed, the hydraulic telescopic rod 201 rises, the tilt motor 203 rotates 90 degrees, completes the degolding of the pins on the second side, and completes the degolding of the pins on the four sides in turn;

S008. The X-axis moving mechanism 1 drives the chip to the tinning unit 5, the tilting motor 203 adjusts the tilt, the hydraulic telescopic rod 201 extends downward, and the pins on the first side of the chip are dipped into the tin liquid for tinning treatment, and one side is completed Finally, the hydraulic telescopic rod 201 is raised, and the tilt motor 203 is adjusted and rotated by 90 degrees to complete the tinning of the second side pins, and sequentially complete the tinning of the four side pins;

S009, the X-axis moving mechanism 1 drives the chip to the top of the hot air leveling unit 6, the tilt motor 203 adjusts the tilt, and the hydraulic telescopic rod 201 stretches out to move the front end of the bottom of the chip to the hot air leveling knife edge 61, and then adjust the chip to a horizontal state , and then move slowly through the hot air along with the X-axis moving mechanism 1 to level the air knife edge 61;

S010, the X-axis moving mechanism 1 drives the chip to the blanking vision camera 7, and the tilt motor 203 adjusts the tilt to make the chip horizontally flat and vertically angled, and the chip is imaged from the bottom, and the tin-coating inspection is performed;

S011. After passing the inspection, the X-axis moving mechanism 1 drives the feeding table 81 of the unloading station where the chip moves, and the tilting motor 203 adjusts the vertical, and aligns the first suction cup 101 with the first row and the first column of the feeding table 81 The first acupoints are discharged in sequence.

Certain exemplary embodiments of the present invention have been described above only by way of illustration, and it goes without saying that those skilled in the art can use various methods without departing from the spirit and scope of the present invention. The described embodiments are modified. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims (9)

1. A full-automatic chip tin coating operation device is characterized by comprising:

the feeding mechanism (11) and the discharging mechanism (12) are movably arranged on the X-axis moving mechanism (1), and the feeding mechanism (11) and the discharging mechanism (12) comprise two sucking rods (100) and two sucking discs (101) which are coaxially arranged;

the automatic feeding device comprises a soldering flux tank (2), a soldering flux activating unit (3), a gold removing unit (4), a tin lining unit (5), a hot air leveling unit (6) and a blanking vision camera (7) which are sequentially arranged along an axis.

2. The full-automatic chip tin coating operation equipment according to claim 1, wherein the feeding mechanism (11) and the discharging mechanism (12) comprise a frame (200), a hydraulic telescopic rod (201) is arranged on the frame (200), a machine head (202) which is arranged on the frame (200) in a sliding manner is fixedly arranged at the output end of the hydraulic telescopic rod (201), oblique motors (203) are symmetrically arranged on the machine head (202), and the oblique motors (203) are respectively used for driving the suction rod (100) and the suction disc (101) to deflect.

3. The full-automatic chip tin coating operation device according to claim 2, wherein an auxiliary support (300) is fixedly installed on a machine head (202) of the feeding mechanism (11), a light source box (301) is installed on the auxiliary support (300), a first vision camera (204) is installed on the side wall of the machine head (202), and the axis of the first vision camera (204) is coaxial with the center of the light source box (301).

4. A fully automatic chip tin coating operation device according to claim 3, wherein the light source box (301) is specifically a directional transparent glass cover, and an LED lamp strip is arranged in the directional transparent glass cover.

5. The full-automatic chip tin coating operation equipment according to claim 1, wherein the feeding mechanism (11) and the discharging mechanism (12) are positioned on the X-axis moving mechanism (1) and respectively provided with a starting station;

the automatic feeding device is characterized by further comprising Y-axis feeding mechanisms (8) arranged on the two initial stations, wherein the Y-axis feeding mechanisms (8) at least comprise feeding tables (81) driven to keep Y-axis movement.

6. The full-automatic chip tin coating operation equipment according to claim 1, wherein the scaling powder activating unit (3) comprises an activating bin (31), a partition plate is arranged in the activating bin (31), and a plurality of cavities which are mutually communicated are separated in the activating bin (31) through the partition plate;

at least two chip suckers (32) are arranged in the cavity.

7. The full-automatic chip tin coating operation device according to claim 1, wherein the gold removing unit (4) and the tin coating unit (5) comprise a tin bath (500), and a plurality of heating rods (501) are arranged in the tin bath (500).

8. The full-automatic chip tin coating operation equipment according to claim 1, wherein the hot air leveling unit (6) comprises a hot air leveling wind knife edge (61) and a liquid storage cylinder (62) arranged right below the hot air leveling wind knife edge (61);

the hot air leveling air knife edge (61) is in a funnel shape, the narrow opening of the hot air leveling air knife edge faces the liquid storage barrel (62), and an air heater is externally connected.

9. A method for enameling tin on a chip, which is characterized by comprising the steps of preparing the chip by using the full-automatic chip enameling tin operation equipment as claimed in any one of claims 1 to 8, wherein the method comprises the following steps:

s001, a chip is placed on the feeding table (81) by a manual whole disc, and the feeding table (81) is driven by the Y-axis feeding mechanism (8) to move to the position right below the feeding mechanism (11);

s002, the first vision camera (204) starts to identify the chip from the first row and first column of acupoints of the feeding table (81), judges the central position coordinates and angles of the chip, simultaneously identifies all specification characteristics of the chip, and guides the subsequent real tin coating operation process through vision software analysis;

s003, after identification is completed, a first sucker (101) is opposite to the center of a chip by a feeding mechanism (11), a first sucker rod (100) is driven by an inclined motor (203) to reach a vertical downward angle, a Z axis corresponding to the first sucker (101) at the moment extends out of the surface of the chip, the first sucker (101) sucks the chip to complete the pickup of the chip, a first vision camera (204) is positioned again, and the second sucker (101) picks up the second chip in the same step;

s004, after picking up, the two chip suckers drive the two suction rods (100) to rotate through the inclined motor (203) according to the chip angle identified by the camera to adjust the angle, so as to correct the XY direction angle of the chip;

s005, after angle correction, an X-axis moving mechanism (1) drives a feeding mechanism (11) to move and move two chips to the position above a soldering flux groove (2), an inclined motor (203) drives the chips, a hydraulic telescopic rod (201) stretches out, chip pins are inserted into the liquid level of the soldering flux to finish dipping soldering flux of pins on the first side of the chips, then the hydraulic telescopic rod (201) contracts, and the inclined motor (203) rotates for 90 degrees to finish dipping soldering flux of pins on the second side of the chips;

s006, after the step five is completed, the X-axis moving mechanism (1) drives two chips to move to the position above the soldering flux activating unit (3), the tilting motor (203) adjusts the verticality, and the chips are placed into the activating bin (31) for soldering flux activating treatment;

s007, the X-axis moving mechanism (1) drives two chips to move to the upper part of the gold removing unit (4), the tilting motor (203) adjusts the tilting, the hydraulic telescopic rod (201) stretches out of the tin bath (500) downwards, pins on the first side of the chips are immersed in tin liquid for gold removing treatment, after one side is finished, the hydraulic telescopic rod (201) is lifted, the tilting motor (203) rotates for 90 degrees, gold removing of pins on the second side is finished, and gold removing of pins on the four sides is sequentially finished;

s008, the X-axis moving mechanism (1) drives a chip to a tin enameling unit (5), the tilting motor (203) adjusts tilting, the hydraulic telescopic rod (201) stretches out downwards, a first side pin of the chip is immersed in tin liquid to perform tin enameling treatment, after one side is finished, the hydraulic telescopic rod (201) is lifted, the tilting motor (203) adjusts and rotates for 90 degrees to finish tin enameling of a second side pin, and tin enameling of four side pins is sequentially finished;

s009, the X-axis moving mechanism (1) drives the chip to the upper part of the hot air leveling unit (6), the tilting motor (203) adjusts the tilting, the hydraulic telescopic rod (201) stretches out, the front end of the bottom of the chip is moved to the hot air leveling air knife edge (61), then the chip is adjusted to be in a horizontal state, and then the chip slowly passes through the hot air leveling air knife edge (61) along with the movement of the X-axis moving mechanism (1);

s010, the X-axis moving mechanism (1) drives the chip to the blanking vision camera (7), the tilting motor (203) adjusts the tilting to enable the chip to be in a horizontal, horizontal and vertical angle, the chip is imaged from the lower part, and tin lining inspection is carried out;

and after the test is qualified, the X-axis moving mechanism (1) drives the feeding table (81) of the blanking station for chip movement, the inclined motor (203) is adjusted to be vertical, and a first sucking disc (101) is aligned with a first acupoint of a first row and a first column of the feeding table (81) and is sequentially discharged.