CN217516218U - DBC feed mechanism - Google Patents

Abstract

The utility model discloses a DBC feed mechanism, snatch the subassembly, shoot subassembly, range finding sensor including mount pad, the material that can go up and down, the material snatchs the subassembly range finding sensor all connects the mount pad, the material snatchs the subassembly including being used for carrying out suction head, sliding block, the elastic component who absorbs the material, the sliding block can gliding connection the mount pad is stretched out the mount pad, the suction head is connected the bottom of sliding block, the elastic component is connected inside the mount pad, the elastic component is connected the top of sliding block. The utility model has the advantages that: the DBC feeding is grabbed through the material grabbing component, and the efficiency is higher than that of the traditional manual feeding; and elastic adsorption can be used for compensating the condition that the suction head cannot suck due to the inconsistent DBC thickness.

Description

DBC feed mechanism

Technical Field

The utility model relates to a IGBT module production field especially relates to a DBC feed mechanism.

Background

The IGBT (insulated gate bipolar transistor) is used as a novel power semiconductor field control self-turn-off device, integrates the high-speed performance of a power MOSFET and the low resistance of a bipolar device, has the characteristics of high input impedance, low voltage control power consumption, simple control circuit, high voltage resistance, large bearing current and the like, and is widely applied to various power conversion; in order to meet a large number of market demands, efficient, flexible and intelligent packaging has become the main packaging form of the IGBT.

The IGBT module mainly comprises a copper-clad ceramic substrate structure (DBC), an IGBT chip, a diode chip, an NTC temperature sensor, a power terminal, a signal terminal and the like, wherein the DBC is particularly important as the core of the IGBT module, how to make the feeding of the DBC more intelligent and flexible is the urgent need in the industry, and the difficulty is a breakthrough in the prior art.

There is also an automatic feeding mechanism in the prior art, such as chinese patent document CN108891929A, which discloses a DBC board automatic feeding machine, the structure of which includes an apparatus main body, a working chamber, a frame, a feeding mechanism and a carrying ROBOT rod, pulleys are distributed on the bottom of the apparatus main body in a flat manner, a double door is provided on the surface of the apparatus main body, the working chamber is provided inside the apparatus main body, the frame is provided on the bottom of the working chamber, a flow line is provided on the surface of the frame, the feeding mechanism is provided on the flow line, the feeding mechanism includes a TRAY and a limit rod, a blocking position is provided on the inner side of the flow line, a first driving motor is provided on the bottom of the flow line, the first driving motor is connected to the flow line through a driving belt, a rotating base is provided on the top of the frame, a folding rotating arm is provided on the top of the rotating base, the folding rotating arm is connected to the carrying ROBOT rod, the ROBOT carrying rod comprises a rod body, a DBC suction head and a double-station suction nozzle, a storage and rotation mechanism is arranged at the top of the rack and comprises a rotary storage disc, a material rack, a rotary table, a screw rod jacking device and a cam divider.

Although the automatic feeding mechanism can complete automatic feeding, the suction nozzle cannot adapt to materials with different thicknesses, and the automatic feeding mechanism is single in function and poor in adaptability.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms part of the prior art that is already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve lies in: how to solve the problem that the existing DBC feeding mode is manual feeding, low efficiency and poor adaptability.

The utility model discloses a following technical means realizes solving above-mentioned technical problem:

the utility model provides a DBC feed mechanism, includes the mount pad, can go up and down the material snatch subassembly, range finding sensor, the material snatchs the subassembly range finding sensor all connects the mount pad, the material snatchs the subassembly including being used for carrying out suction head, sliding block, the elastic component who absorbs the material, the sliding block can gliding connection the mount pad is stretched out the mount pad, the suction head is connected the bottom of sliding block, the elastic component is connected inside the mount pad, the elastic component is connected the top of sliding block.

The utility model discloses a range finding sensor is to getting material position and whether having the material to and range finding sensor reads the setting value and shows that DBC reachs and gets the material position, and after DBC reachs and gets the material position, the suction head of material snatching the subassembly moves to getting the material position, and the sliding block moves down to DBC, continues to move down, and the sliding block receives ascending reaction force, and the elastic component gives the downward effort of sliding block, thereby realizes the elastic adsorption to DBC, and elastic adsorption can plan for the inconsistent condition that leads to the suction head to suck of DBC thickness; the utility model uses the material grabbing component to grab DBC feeding, and the efficiency is higher than that of traditional manual feeding; and elastic adsorption can be used for compensating the condition that the suction head cannot suck due to the inconsistent DBC thickness.

Preferably, the mounting seat comprises a first connecting plate, a second connecting plate, a cover and a top plate, the second connecting plate and the top plate are horizontally connected to one side of the first connecting plate at intervals, and a cavity is formed in the mounting seat after the cover is connected with the second connecting plate, the top plate and the first connecting plate.

Preferably, the material snatchs the subassembly still includes the sliding seat, sliding seat fixed connection in the mount pad, the sliding seat has the slide that runs through, sliding block sliding connection the sliding seat, the bottom of sliding block is connected the suction head, be equipped with on the sliding block with the communicating induction port of suction head.

Preferably, the material grabbing assembly further comprises a third connecting plate, one end, away from the suction head, of the sliding block is provided with a limiting hole, one end of the elastic assembly is located in the limiting hole, the other end of the elastic assembly is connected with the third connecting plate, and the third connecting plate is fixedly connected with the inside of the mounting seat.

Preferably, elastic component includes spring, adjustment post, adjusting nut, the third connecting plate has the T type hole of invering, the middle part of adjustment post has the limiting plate of radial outside extension, the limiting plate is spacing in T type downthehole, the bottom of adjustment post cup joints the spring, the both ends of spring are connected the terminal surface in spacing hole in the sliding block and the limiting plate, the top of adjustment post is passed behind the T type hole with adjusting nut connects.

The distance between the limiting plate and the limiting hole on the adjusting column can be adjusted by adjusting the screwing of the nut, so that the compression amount of the spring is adjusted, and the pre-pressure of the spring on the sliding block is adjusted; after the suction head moves above the DBC, the suction head descends to be in contact with the DBC, the suction head continues descending, the sliding block receives upward force, and the spring applies downward force to the sliding block, so that elastic adsorption of the DBC is achieved.

Preferably, the air suction device further comprises a pressure sensor assembly, the pressure sensor assembly is connected to the mounting seat, and the pressure sensor assembly is connected with the air suction port through an air pipe.

The pressure sensor assembly is used for feeding back the working condition of the suction head, when the suction head sucks the DBC, the pressure sensor has a negative pressure value, the value is in a preset range, the DBC adsorption is completed, the mechanism acts until the correct DBC is placed into the carrier, and the wrong DBC is placed into the NG material tray.

Preferably, still include the subassembly of shooing, the subassembly of shooing includes camera, light source, the light source is connected on the mount pad, the camera is connected on the camera, the camera is located the top of light source.

Whether the material taking position is filled with materials or not is judged through the distance measuring sensor, the distance measuring sensor reads a set value to indicate that the DBC reaches the material taking position, the photographing component photographs defects, positive and negative faces, postures and the like of the current DBC and judges whether the DBC is a qualified piece or not, the material grabbing component moves to the material taking position for the qualified piece, the DBC is sucked to a carrier or a next procedure is carried out, the material grabbing component moves to the material taking position for the unqualified piece, and the unqualified DBC is sucked and moved to a recovery position such as an NG material tray; the utility model discloses can carry out classification to qualified and unqualified piece, reduce and make mistakes, improve production efficiency.

Preferably, still include the camera frame, the camera is connected the camera frame, the camera frame is connected the mount pad.

Preferably, the LED lamp further comprises a light source fixing plate, wherein the light source is annular, the light source fixing plate is annular, and the light source fixing plate is connected with the mounting seat.

The light source may shine on the DBC in preparation for camera shots.

Preferably, the robot further comprises a hoop used for being connected with the robot, and the hoop is connected with the top surface of the mounting seat.

The embracing ring can be connected with the tail end of the four-axis robot, and the movement of the whole mechanism can be realized.

The utility model has the advantages that:

(1) the utility model discloses a range finding sensor is to getting material position and whether having the material to and range finding sensor reads the setting value and shows that DBC reachs and gets the material position, and after DBC reachs and gets the material position, the suction head of material snatching the subassembly moves to getting the material position, and the sliding block moves down to DBC, continues to move down, and the sliding block receives ascending reaction force, and the elastic component gives the downward effort of sliding block, thereby realizes the elastic adsorption to DBC, and elastic adsorption can plan for the inconsistent condition that leads to the suction head to suck of DBC thickness; the utility model uses the material grabbing component to grab DBC feeding, and the efficiency is higher than that of traditional manual feeding; the elastic adsorption can compensate the condition that the suction head cannot suck due to the inconsistent DBC thickness;

(2) the distance between the limiting plate and the limiting hole on the adjusting column can be adjusted by adjusting the screwing of the nut, so that the compression amount of the spring is adjusted, and the pre-pressure of the spring on the sliding block is adjusted; after the sucker moves above the DBC, the sucker descends to be in contact with the DBC, the sucker continues descending, the sliding block receives an upward force, and the spring applies a downward force to the sliding block, so that elastic adsorption of the DBC is realized;

(3) the pressure sensor assembly is used for feeding back the working condition of the suction head, when the suction head sucks the DBC, the pressure sensor has a negative pressure value, the value is in a preset range, the DBC adsorption is completed, the mechanism acts until the correct DBC is placed into the carrier, and the wrong DBC is placed into the NG material tray;

(4) whether the material taking position is filled with materials or not is judged through the distance measuring sensor, the distance measuring sensor reads a set value to indicate that the DBC reaches the material taking position, the photographing component photographs defects, positive and negative faces, postures and the like of the current DBC and judges whether the DBC is a qualified piece or not, the material grabbing component moves to the material taking position for the qualified piece, the DBC is sucked to a carrier or a next procedure is carried out, the material grabbing component moves to the material taking position for the unqualified piece, and the unqualified DBC is sucked and moved to a recovery position such as an NG material tray; the utility model discloses can carry out classification to qualified and unqualified piece, reduce and make mistakes, improve production efficiency

(5) The light source can light the DBC and prepare for shooting by the camera;

(6) the embracing ring can be connected with the tail end of the four-axis robot, and the movement of the whole mechanism can be realized.

Drawings

Fig. 1 is a schematic structural diagram of a DBC feeding mechanism according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a DBC feeding mechanism according to an embodiment of the present invention;

fig. 3 is a front view of a DBC feeding mechanism according to an embodiment of the present invention;

fig. 4 is a sectional view of a DBC feeding mechanism according to an embodiment of the present invention;

fig. 5 is an exploded view of a DBC feeding mechanism according to an embodiment of the present invention;

FIG. 6 is an enlarged view at B in FIG. 5;

fig. 7 is a front view of a DBC feeding mechanism (hidden housing) according to an embodiment of the present invention;

fig. 8 is a schematic view illustrating a connection between a DBC feeding mechanism and a robot according to an embodiment of the present invention;

reference numbers in the figures:

1. a mounting seat; 11. a first connecting plate; 12. a second connecting plate; 13. a housing; 14. a top plate; 2. a material grabbing component; 21. a suction head; 22. a slider; 221. an air suction port; 222. a limiting hole; 23. a sliding seat; 24. a third connecting plate; 25. a spring; 26. adjusting the column; 27. adjusting the nut; 3. a photographing component; 4. a ranging sensor; 5. a pressure sensor assembly; 51. a pressure sensor; 52. a pipe joint; 6. encircling; 7. DBC; 8. a robot;

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1, fig. 2 and fig. 3, a DBC feed mechanism includes mount pad 1, the material that can go up and down snatchs subassembly 2, the subassembly 3 of shooing, range sensor 4, the subassembly 3 of shooing the material snatchs subassembly 2 range sensor 4 all connects mount pad 1, the material snatch subassembly 2 with the subassembly 3 of shooing sets up side by side.

As shown in fig. 4 and 5, the mounting base 1 includes a first connecting plate 11, a second connecting plate 12, a housing 13, and a top plate 14, the first connecting plate 11 is a vertically disposed plate, the top plate 14 is a horizontally disposed plate, a top end of the first connecting plate 11 is fixedly connected to a bottom surface of a middle portion of the top plate 14, the second connecting plate 12 is a horizontally disposed plate, a right end of the second connecting plate 12 is fixedly connected to a left side of the first connecting plate 11, the second connecting plate 12 is horizontally spaced from the top plate 14, the housing 13 is U-shaped when viewed from the top, and the housing 13 is substantially trapezoidal when viewed from the front; after the housing 13 is connected with the second connecting plate 12, the top plate 14 and the first connecting plate 11, a cavity is formed in the mounting seat 1, and the fixing connection mode is bolt connection or welding.

As shown in fig. 5 and 6, the material grabbing assembly 2 includes a sucker 21, a sliding block 22, a sliding seat 23, a third connecting plate 24, a spring 25, an adjusting column 26, and an adjusting nut 27;

the right-hand member fixed connection of sliding seat 23 the left side of first connecting plate 11, the bottom fixed connection of sliding seat 23 the top surface of second connecting plate 12, sliding seat 23 and second connecting plate 12 have and run through the slide, and the cross-section that runs through the slide is rectangle or square, sliding block 22's cross-section is rectangle or square, has the clearance between sliding block 22 and the sliding seat 23, sliding block 22 sliding connection sliding seat 23, wherein sliding block 22 length is longer, and its bottom is located the below of second connecting plate 12, sliding block 22's bottom is connected suction head 21, sliding block 22's bottom has column cavity and has radial induction port 221, and induction port 221 communicates with each other with suction head 21 for be connected with vacuum generating device, realize the negative pressure, suction head 21 can do benefit to the negative pressure and absorb the DBC. The suction head 21 needs to be connected to a vacuum generating device to generate suction force during actual use.

The top of the sliding block 22 is provided with a limit hole 222, and the limit hole 222 is a stepped hole and has a structure with a large top and a small bottom; the right end of the third connecting plate 24 is fixedly connected with the left side of the first connecting plate 11, and the third connecting plate 24 is provided with a through inverted T-shaped hole which is small in top and large in bottom; the middle part of adjustment post 26 has the radial limiting plate that outwards extends, the limiting plate is spacing in T type downthehole, and adjustment post 26 on limiting plate upper portion passes T type hole promptly, and the lower part of adjustment post 26 inserts in spacing hole 222, the bottom of adjustment post 26 cup joints spring 25, the both ends of spring 25 are connected the terminal surface of spacing hole 222 in the sliding block 22 and the bottom surface of limiting plate, the top of adjustment post 26 has the external screw thread, adjustment post 26 with adjusting nut 27 is connected.

By screwing the adjusting nut 27, the distance between the bottom surface of the upper limiting plate of the adjusting post 26 and the step surface of the limiting hole 222 can be adjusted, so that the compression amount of the spring 25 is adjusted, the pre-pressure of the spring 25 on the sliding block 22 is adjusted, for example, after the adjusting nut 27 is screwed clockwise, the adjusting post 26 moves upwards, the distance between the bottom surface of the limiting plate and the step surface of the limiting hole 222 is increased, the compression on the spring 25 is reduced, and the pre-pressure of the spring 25 on the sliding block 22 is reduced; if the adjusting nut 27 is screwed counterclockwise, the adjusting post 26 moves downward, and the distance between the bottom surface of the limit plate and the step surface of the limit hole 222 becomes smaller, so that the compression on the spring 25 becomes larger, and the pretightening force of the spring 25 on the sliding block 22 becomes larger.

The elastic component plays a role in elastic adsorption in the process that the suction head 21 sucks the DBC, specifically, after the suction head 21 moves to the position above the DBC, the suction head descends to be in contact with the DBC, the suction head continues descending, the sliding block 22 receives upward force, the spring 25 applies downward force to the sliding block 22, accordingly, the DBC is elastically adsorbed, and the situation that the suction head 21 cannot suck due to inconsistent DBC thickness can be compensated through elastic adsorption.

As shown in fig. 1, 4 and 7, the DBC feeding mechanism further includes a pressure sensor assembly 5, the pressure sensor assembly 5 is connected to the housing 13 through a bolt, the pressure sensor assembly 5 includes a pressure sensor 51 and a pipe joint 52, the pipe joint 52 is a three-way joint, the pressure sensor 51 is connected to one of the interfaces of the pipe joint 52, the other interface of the pipe joint 52 is connected to the air suction port 221 through an air pipe, and the third interface is connected to a vacuum generating device; the display screen of the pressure sensor 51 is displayed outwards, the pipeline joint 52 is positioned in the mounting seat 1, the air suction port 221 is also connected with an L-shaped joint, the L-shaped joint is connected with the pipeline joint 52 through an air pipe, and the second connecting plate 12 can be provided with an air pipe avoiding hole, so that the air pipe can conveniently penetrate through the second connecting plate 12 from the L-shaped joint to enter the mounting seat 1 and then is connected with the pipeline joint 52; the first connecting plate 11 is provided with a avoiding hole for connecting the pipeline joint 52 with the vacuum generating device.

The pressure sensor 51 is used for feeding back the working condition of the suction head 21, when the suction head 21 sucks the DBC, the pressure sensor 51 has a negative pressure value, the value is within a preset range, the DBC adsorption is completed, the mechanism acts until the correct DBC is placed into the carrier, and the wrong DBC is placed into the NG tray.

In this embodiment, distance measuring sensor 4 is the laser range finding sensor, and the position that the laser range finding sensor detected DBC and get the material position and have or not, and the laser range finding sensor has the signal, shows that DBC gets the material position and has the material, and the laser range finding sensor reads the setting value, shows that DBC reachs and gets the material position, prepares for formally getting material DBC.

The embodiment further comprises a hoop 6 used for being connected with a robot 8, wherein the hoop 6 is connected with the top surface of the mounting seat 1. Specifically, as shown in fig. 8, the hoop 6 is connected to the top surface of the top plate 14 through a bolt, and the hoop 6 may be connected to the end of the four-axis robot 8, so that the movement of the whole mechanism may be realized.

When the robot works, the distance measuring sensor 4 detects the DBC firstly, the mechanism acts, the photographing component 3 photographs the DBC, the type, the positive and the negative of the DBC and the defects are identified, and the robot 8 operates the whole mechanism to continue to act according to the photographing result; the suction head 21 moves right above the DBC, the sliding block 22 descends until the suction head 21 contacts the DBC, the sliding block 22 continues descending, the sliding block 22 is pushed upwards, the spring 25 applies downward pressure to the sliding block 22, elastic adsorption on the DBC is achieved, the elastic adsorption can compensate the situation that the suction head 21 cannot suck due to the fact that the DBC is inconsistent in thickness, and pre-pressure of the spring 25 is achieved through the adjusting nut 27 and the adjusting column 26; when the suction head 21 sucks the DBC, the pressure sensor 51 has a negative pressure value which is within a preset range, the DBC adsorption is completed, the mechanism moves until the correct DBC is placed in the carrier, and the wrong DBC is placed in an NG tray. In the embodiment, the DBC feeding is grabbed through the material grabbing component 2, and the efficiency is higher than that of the traditional manual feeding; and qualified and unqualified pieces are identified, so that errors are reduced, and the production efficiency is improved.

Example two:

as shown in fig. 3 and 5, on the basis of the first embodiment, in the present embodiment, the photographing assembly 3 includes a camera 31, a light source 32, a camera base 33, and a light source fixing plate 34; the camera base 33 is of a U-shaped structure, the left side of the camera base 33 is connected with the right side face of the first connecting plate 11 through a bolt, the camera 31 is connected in an inner groove of the camera base 33 through a bolt, and the shooting direction of the camera 31 faces to a DBC; the left end of the light source fixing plate 34 is of an L-shaped structure and is connected with the right side face of the first connecting plate 11 through a bolt, the right end of the light source fixing plate 34 is of an annular structure, the light source 32 can be fixed below the light source fixing plate 34 through the bolt, the light source 32 is annular, and the light source 32 can be used for polishing DBC (direct light-emitting diode) to prepare for shooting by a camera.

When the device works, the distance measuring sensor 4 detects the DBC firstly, the mechanism acts, the light source 32 lights the DBC, the camera 31 synchronously shoots the DBC and shoots the DBC, and the DBC type, the front side and the back side and the defects are identified.

The robot in this embodiment has a controller, or the robot may be connected to the controller at the rear end of the camera 31, the picture taken by the photographing component 3 is transmitted to the controller, and after recognition processing, various DBC data, such as external dimensions, appearance defects, appearance colors, etc., are obtained, so as to compare with preset standard data, determine whether the DBC is a qualified piece or an unqualified piece, and then control the suction head 21 to place the qualified DBC in the carrier, and place the wrong DBC in the NG tray. This part can be realized by adopting the prior art, and detailed description is omitted.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. The utility model provides a DBC feed mechanism, a serial communication port, including the mount pad, can go up and down the material snatch the subassembly, shoot subassembly, range finding sensor, the material snatchs the subassembly range finding sensor all connects the mount pad, the material snatchs the subassembly including being used for carrying out suction head, sliding block, the elastic component who absorbs the material, the sliding block can gliding connection the mount pad is stretched out the mount pad, the suction head is connected the bottom of sliding block, the elastic component is connected inside the mount pad, the elastic component is connected the top of sliding block.

2. The DBC feeding mechanism of claim 1, wherein the mounting seat comprises a first connecting plate, a second connecting plate, a cover and a top plate, the second connecting plate and the top plate are horizontally spaced from each other and connected to one side of the first connecting plate, and a cavity is formed in the mounting seat after the cover is connected to the second connecting plate, the top plate and the first connecting plate.

3. The DBC feeding mechanism of claim 1, wherein the material grabbing component further comprises a sliding seat fixedly connected in the installation seat, the sliding seat is provided with a through slide way, the sliding block is slidably connected with the sliding seat, the bottom of the sliding block is connected with the suction head, and the sliding block is provided with an air suction port communicated with the suction head.

4. The DBC feeding mechanism of claim 3, wherein the material grabbing component further comprises a third connecting plate, one end of the sliding block, which is far away from the suction head, is provided with a limiting hole, one end of the elastic component is located in the limiting hole, the other end of the elastic component is connected with the third connecting plate, and the third connecting plate is fixedly connected with the mounting seat.

5. The DBC feeding mechanism of claim 4, wherein the elastic component comprises a spring, an adjusting column and an adjusting nut, the third connecting plate is provided with an inverted T-shaped hole, a limiting plate extending outwards in the radial direction is arranged in the middle of the adjusting column, the limiting plate is limited in the T-shaped hole, the spring is sleeved at the bottom of the adjusting column, the two ends of the spring are connected with the end face of the limiting hole in the sliding block and the limiting plate, and the top of the adjusting column is connected with the adjusting nut after passing through the T-shaped hole.

6. The DBC feeding mechanism of claim 3, further comprising a pressure sensor assembly, wherein the pressure sensor assembly is connected to the mounting seat, and the pressure sensor assembly is connected with the air suction port through an air pipe.

7. The DBC feeding mechanism of claim 1, further comprising a photographing component, wherein the photographing component comprises a camera and a light source, the light source is connected to the mounting seat, the camera is connected to the camera, and the camera is located above the light source.

8. The DBC feeding mechanism of claim 7, further comprising a camera mount, wherein the camera is connected to the camera mount, and wherein the camera mount is connected to the mounting base.

9. The DBC feeding mechanism of claim 7, further comprising a light source fixing plate, wherein the light source is annular, the light source fixing plate is annular, and the light source fixing plate is connected to the mounting seat.

10. The DBC feeding mechanism of claim 1, further comprising a clasping ring for connection with a robot, wherein the clasping ring is connected with the top surface of the mounting seat.

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