A blue film positioning device

Abstract

The present invention discloses a blue film positioning device, which is used to solve the technical problems in the prior art of cumbersome positioning and adjustment operations for blue film and a relatively complex positioning device structure. The present invention includes a Y-direction positioning module, which is provided with a Y-direction lead screw, which is provided with a first connecting seat, the first connecting seat can move in a set Y direction along the Y-direction lead screw, and the first connecting seat is connected to an X-direction positioning module; the X-direction positioning module includes an X-direction lead screw, which is provided with a second connecting seat, the second connecting seat can move in a set X direction along the X-direction lead screw, and the second connecting seat is connected to a rotation positioning module; the rotation positioning module is provided with a rotating ring, the top of the rotating ring is provided with a plurality of lifting mandrels that can be driven to move in a set Z direction, and the top of the lifting mandrel is connected to a clamping module. The present invention achieves multi-directional adjustment of the blue film through a simple structure, and is simple to operate and easy to use.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor device preparation, and in particular to a blue film positioning device. Background Art

[0002] In the semiconductor packaging process, a die bonder typically uses vision-guided technology to automatically pick up chips from a blue film, bond them to a lead frame, and then proceed to assembly and packaging. During the automatic pick-up process, the blue film must be positioned in multiple directions to ensure that the core-loading needle can accurately pick up the chip. At the same time, the blue film must be compressed to ensure uniform tension across the film, facilitating the removal of individual chips.

[0003] Existing die bonders can perform X and Y positioning, rotational positioning, and pressing operations on the blue film, but usually require multiple mechanisms to act on the blue film separately to achieve the above functions, making the module structure of the equipment complex, the installation and adjustment process cumbersome, and the cost high.

[0004] Therefore, finding a blue film positioning device that can solve the above technical problems has become an important topic studied by those skilled in the art. Summary of the Invention

[0005] The invention discloses a blue film positioning device, which is used to solve the technical problems in the prior art of complicated positioning and adjusting operations for the blue film and a relatively complex positioning device structure.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A blue film positioning device includes a Y-direction positioning module, the Y-direction positioning module includes a Y-direction lead screw, the Y-direction lead screw is connected to a first connecting seat, the first connecting seat can move in a set Y direction along the Y-direction lead screw, and the first connecting seat is connected to an X-direction positioning module;

[0008] The X-direction positioning module includes an X-direction lead screw, a second connecting seat is provided on the X-direction lead screw, the second connecting seat can move in a set X direction along the X-direction lead screw, and the second connecting seat is connected to the rotation positioning module;

[0009] The rotary positioning module is provided with a rotating ring, the top of the rotating ring is provided with a plurality of lifting mandrels which can be driven to move in a set Z direction, and the top ends of the lifting mandrels are connected with a pressing module.

[0010] Optionally, the pressing module includes an upper pressing plate and a lower pressing plate, a blue film clamping position is formed between the upper pressing plate and the lower pressing plate; a through hole is provided in the center of each of the upper pressing plate and the lower pressing plate;

[0011] A connecting screw is provided at the bottom of the lower pressing plate, and a threaded hole adapted to the connecting screw is provided at the top of the lifting core shaft, and the connecting screw is threadedly connected to the lifting core shaft.

[0012] Optionally, the two through holes are circular holes; the rotation positioning module further comprises a top ring mounted on the inner side wall of the rotating ring, the top of the top ring protruding from one side of the top of the rotating ring;

[0013] When the lifting mandrel is driven to rotate in a preset first rotation direction, the pressing module is driven to descend, and the top ring extends into the blue film clamping position to lift up and press the bottom surface of the blue film.

[0014] Optionally, the Y-axis positioning module further comprises a Y-axis support plate, wherein two opposite sides of the Y-axis support plate are provided with Y-axis linear slide rails, and a Y-axis connecting seat is slidably connected to the Y-axis linear slide rails; the Y-axis linear slide rails and the Y-axis lead screw are arranged in parallel;

[0015] The X-direction positioning module includes an X-direction support plate, and the X-direction support plate is fixedly connected to the Y-direction connecting seat.

[0016] Optionally, X-direction linear slides are provided on opposite sides of the X-direction support plate, and an X-direction connecting seat is slidably connected to the X-direction linear slides; the X-direction linear slides and the X-direction lead screw are arranged in parallel;

[0017] The rotation positioning module includes a rotation support plate, and the X-direction connecting seat is fixedly connected to the rotation support plate.

[0018] Optionally, the Y-direction positioning module further includes a Y-direction motor, an output end of the Y-direction motor is connected to the Y-direction lead screw via a Y-direction coupling; both ends of the Y-direction lead screw are connected to a Y-direction support seat.

[0019] Optionally, the X-direction positioning module further includes an X-direction motor, and an output end of the X-direction motor is connected to the X-direction lead screw via an X-direction coupling; both ends of the X-direction lead screw are connected to an X-direction support seat.

[0020] Optionally, the rotary positioning module further includes a lifting motor; the lifting motor is connected to a driving wheel, the driving wheel is connected to a plurality of driven wheels via a synchronous belt transmission, and each of the driven wheels is fixedly connected to a lifting core shaft.

[0021] Optionally, the rotation positioning module also includes a rotating motor, and the output end of the rotating motor is connected to a rotating synchronous wheel; the rotating synchronous wheel is connected to the rotating ring through a conveyor belt, and a belt groove is provided on the outer wall of the rotating ring, and the conveyor belt is installed in the belt groove in a tensioned state.

[0022] Optionally, the rotating support plate is provided with a plurality of supporting members for supporting the rotation of the rotating ring;

[0023] One end of the support member is fixedly mounted on the outer edge of the rotating support plate, the other end of the support member is provided with a limiting protrusion, and the inner side wall of the rotating ring is provided with a positioning portion that cooperates with the limiting protrusion; when the rotating ring is driven to rotate to a predetermined angle, the limiting protrusion abuts against the positioning portion.

[0024] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0025] By arranging lead screws on the Y-axis positioning module and the X-axis positioning module, and arranging a rotating ring on the rotating positioning module, multi-angle adjustment of the blue film can be achieved through a simple structure; the above three positioning modules are stacked and fixedly connected to each other through a connecting seat, a lifting mandrel is set on the rotating ring, and a pressing module is connected inside the lifting mandrel. The blue film clamp is arranged in the pressing module, which realizes multi-angle adjustment of the blue film while being able to lift and press the blue film, making automatic chip picking more convenient.

[0026] Compared with the existing technology, the blue film positioning module and the pressing module are integrated to facilitate the positioning and adjustment of the blue film, and the automatic picking of chips on the blue film is simpler and easier to operate; the present invention realizes multi-angle adjustment and pressing of the blue film through a simple structure, is easy to use, is more suitable for the needs of automated production, and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a structural schematic diagram of a blue film positioning device;

[0029] Figure 2 It is a structural diagram of the Y-axis positioning module;

[0030] Figure 3 It is a structural diagram of the X-axis positioning module;

[0031] Figure 4 It is a structural diagram of the rotation positioning module;

[0032] Figure 5 is a side view of the compression module;

[0033] Figure 6is a top view of the compression module;

[0034] Illustrations: Y-axis positioning module 1, X-axis positioning module 2, rotation positioning module 3, clamping module 4, Y-axis lead screw 11, first connecting seat 12, Y-axis support plate 13, Y-axis linear slide 14, Y-axis connecting seat 15, Y-axis motor 16, Y-axis coupling 17, Y-axis support seat 18, X-axis lead screw 21, second connecting seat 22, X-axis support plate 23, X-axis linear slide 24, X-axis connecting seat 25, X-axis motor 26, X-axis coupling 27, X-axis support seat 28, rotating ring 31, lifting mandrel 32, top ring 33, rotating support plate 34, driving wheel 35, lifting motor 36, driven wheel 37, rotating motor 38, rotating synchronous wheel 39, connecting screw 41, upper pressure plate 42, lower pressure plate 43, synchronous belt 301, conveyor belt 302, belt tensioner 303, support member 341. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0036] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal connectivity between two elements or the interaction between two elements. A person of ordinary skill in the art can understand the specific meanings of the above terms in this application based on the specific circumstances. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated.

[0037] A blue film positioning device includes a Y-direction positioning module 1, the Y-direction positioning module 1 includes a Y-direction lead screw 11, the Y-direction lead screw 11 is connected to a first connecting seat 12, the first connecting seat 12 can move in a set Y direction along the Y-direction lead screw 11, and the first connecting seat 12 is connected to an X-direction positioning module 2;

[0038] The X-direction positioning module 2 includes an X-direction screw 21, on which a second connecting seat 22 is provided. The second connecting seat 22 can move in a set X direction along the X-direction screw 21, and the second connecting seat 22 is connected to the rotation positioning module 3;

[0039] The rotary positioning module 3 includes a rotating ring 31 . A plurality of lifting mandrels 32 that can be driven to move in a set Z direction are provided on the top of the rotating ring 31 . The top ends of the lifting mandrels 32 are connected to the pressing module 4 .

[0040] See Figure 1 The X-direction is the direction of left-right movement along the X-axis, the Y-direction is the direction of forward-backward movement along the Y-axis, and the Z-direction is the direction of up-and-down movement along the Z-axis. It should be noted that the lead screw is composed of components such as a screw and a nut, and is used to convert rotational motion into linear motion, or vice versa. In this embodiment, when the lead screw is driven to rotate, the nut converts the motion into linear motion according to the lead of the corresponding specification along with the rotation angle of the lead screw. Specifically, the X-direction positioning module 2 is connected to the nut on the Y-direction lead screw via the first connecting seat 12, thereby enabling the X-direction positioning module 2 to move in the Y-direction; the rotation positioning module 3 is connected to the nut on the X-direction lead screw via the second connecting seat 22, thereby enabling the rotation positioning module 3 to move in the X-direction. Furthermore, due to the stacked connection arrangement of the four modules, when the X-direction positioning module 2 moves in the Y-direction, the rotation positioning module 3 and the clamping module 4 both move with the X-direction positioning module 2; when the rotation positioning module 3 moves in the X-direction, the clamping module 4 moves with the rotation positioning module 3. Preferably, the X-direction lead screw and the Y-direction lead screw are precision lead screws of C3 specification.

[0041] Specifically, the blue film clamp is arranged in the clamping module 4. When the rotating ring 31 is driven to rotate, the clamping module 4 rotates with the rotating ring 31. The rotation here is defined as rotating left or right to a predetermined angle with the blue film as the rotation center; the clamping module 4 is connected to the lifting core shaft 32. When the lifting core shaft 32 is driven to rotate, the clamping module 4 performs a lifting movement along the Z direction. The lifting movement in this embodiment is defined as a movement perpendicular to the direction of the rotation positioning module 3, away from or close to the rotation positioning module 3.

[0042] The above design realizes multi-angle adjustment and pressing operation of the blue film, with a simple structure and easy use; the blue film positioning module and the pressing module are integrated, making the automatic picking of chips on the blue film simpler and easier to operate, suitable for the needs of automated production, while reducing costs.

[0043] Furthermore, the pressing module 4 includes an upper pressing plate 42 and a lower pressing plate 43, and a blue film clamping position is formed between the upper pressing plate 42 and the lower pressing plate 43; a through hole is provided in the center of the upper pressing plate 42 and the lower pressing plate 43;

[0044] A connecting screw 41 is provided at the bottom of the lower pressing plate 43 , and a threaded hole adapted to the connecting screw 41 is provided at the top of the lifting core shaft 32 . The connecting screw 41 is threadedly connected to the lifting core shaft 32 .

[0045] Specifically, the connecting screw 41 is threadedly connected to the lifting core shaft 32. When the lifting core shaft 32 is driven to rotate, the connecting screw 41 moves up and down within the lifting core shaft 32 through the threaded structure. There are four connecting screws 41, and their positions correspond one to one with the lifting core shaft 32.

[0046] It should be noted that the structure of the blue film is a circular iron ring on the outside, a softer blue film in the center, a chip attached to the blue film body, and the blue film is placed in the blue film clamp position, with the blue film body and the chip exposed through the through hole.

[0047] Furthermore, the two through holes are circular holes; the rotation positioning module 3 further includes a top ring 33 mounted on the inner side wall of the rotating ring 31, and the top of the top ring 33 protrudes from one side of the top of the rotating ring 31;

[0048] When the lifting mandrel 32 is driven to rotate in a preset first rotation direction, the pressing module 4 is driven to descend, and the top ring 33 extends into the blue film clamping position to lift up and press the bottom surface of the blue film.

[0049] Specifically, the outer diameter of the top ring 33 matches the inner diameter of the through-hole of the compression module 4. When the lifting mandrel 32 is driven to rotate in a predetermined first rotational direction, the compression module 4 is lowered, and the top ring 33 can lift the blue film through the through-hole, keeping the blue film in a tensioned state, thereby facilitating the core needle to automatically pick up the chip on the blue film. When the lifting mandrel 32 is driven to rotate in a predetermined second rotational direction, it will drive the compression module 4 upward.

[0050] Furthermore, the rotary positioning module 3 also includes a lifting motor 36 , which is connected to a driving wheel 35 , which is connected to a plurality of driven wheels 37 via a synchronous belt 301 , and each driven wheel 37 is fixedly connected to a lifting core shaft 32 .

[0051] Specifically, the lifting motor 36 drives the driving wheel 35 to rotate, and at the same time, the driven wheels 37 connected to the driving wheel 35 rotate accordingly, driving the lifting core shaft 32 to rotate. Preferably, a belt tensioning pulley 303 is also provided on the rotating ring 31 to keep the synchronous belt 301 in a tensioned state to ensure the stability of the rotation process.

[0052] Furthermore, the rotary positioning module 3 further includes a rotary motor 38 , the output end of the rotary motor 38 is connected to a rotary synchronous wheel 39 ;

[0053] The rotating synchronous wheel 39 is connected to the rotating ring 31 through a conveyor belt 302. A belt groove is provided on the outer wall of the rotating ring 31, and the conveyor belt 302 is installed in the belt groove in a tensioned state.

[0054] Specifically, the output end of the rotating motor 38 is connected to the rotating synchronous wheel 39, and the rotating synchronous wheel 39 is connected to the rotating ring 31 through the transmission belt 302. When the rotating motor 38 drives the rotating synchronous wheel 39 to rotate, the rotating ring 31 is driven to rotate to a predetermined angle.

[0055] Furthermore, the Y-axis positioning module 1 further includes a Y-axis support plate 13, and Y-axis linear guide rails 14 are provided on opposite sides of the Y-axis support plate 13. A Y-axis connecting seat 15 is slidably connected to the Y-axis linear guide rails 14. The Y-axis linear guide rails 14 are arranged in parallel with the Y-axis lead screw 11.

[0056] The X-direction positioning module 2 includes an X-direction support plate 23 , and the X-direction support plate 23 is fixedly connected to the Y-direction connecting seat 15 .

[0057] Specifically, the X-axis support plate 23 is fixedly connected to the Y-axis connection base 15 via screws. When the X-axis positioning module 2 moves in the Y-axis, the X-axis support plate 23 moves accordingly, and the Y-axis connection base 15 slides on the Y-axis linear guide rail 14. The Y-axis linear guide rail 14 is provided on opposite sides parallel to the Y-axis lead screw 11, making the connection between the X-axis positioning module 2 and the Y-axis positioning module 1 more stable.

[0058] Furthermore, X-direction linear guide rails 24 are provided on opposite sides of the X-direction support plate 23, and an X-direction connecting seat 25 is slidably connected to the X-direction linear guide rails 24; the X-direction linear guide rails 24 and the X-direction lead screw 21 are arranged in parallel;

[0059] The rotation positioning module 3 includes a rotation support plate 34 , and the X-direction connecting seat 25 is fixedly connected to the rotation support plate 34 .

[0060] Specifically, the rotating support plate 34 is fixedly connected to the X-axis connecting seat 25 by screws. When the rotating positioning module 3 moves in the X-axis, the rotating support plate 34 moves accordingly, and the X-axis connecting seat 25 slides on the X-axis linear guide rail 24. The X-axis linear guide rail 24 is provided on opposite sides parallel to the X-axis lead screw 21, making the connection between the rotating positioning module 3 and the X-axis positioning module 2 more stable.

[0061] Furthermore, the Y-axis positioning module 1 also includes a Y-axis motor 16 , the output end of the Y-axis motor 16 is connected to the Y-axis screw 11 through a Y-axis coupling 17 ; both ends of the Y-axis screw 11 are connected to a Y-axis support seat 18 .

[0062] Specifically, the Y-direction screw 11 is driven by the Y-direction motor 16, and the output end of the Y-direction motor 16 is connected to the Y-direction screw 11 through the Y-direction coupling 17, so that the Y-direction screw 11 rotates; the Y-direction support seat 18 is installed on the Y-direction support plate 13, and the Y-direction screw 11 is installed between the two Y-direction support seats 18, so that the working process of the Y-direction screw 11 is more stable.

[0063] Furthermore, the X-direction positioning module 2 also includes an X-direction motor 26 , the output end of the X-direction motor 26 is connected to the X-direction screw 21 through an X-direction coupling 27 ; both ends of the X-direction screw 21 are connected to an X-direction support seat 28 .

[0064] Specifically, the X-direction lead screw 21 is driven by the X-direction motor 26, and the output end of the X-direction motor 26 is connected to the X-direction lead screw 21 through the X-direction coupling 27, so that the X-direction lead screw 21 rotates; the X-direction support seat 28 is installed on the X-direction support plate 23, and the X-direction lead screw 21 is installed between the two X-direction support seats 28, so that the working process of the X-direction lead screw 21 is more stable.

[0065] Furthermore, the rotating support plate 34 is provided with a plurality of support members 341 for supporting the rotation of the rotating ring 31;

[0066] One end of the support member 341 is fixedly mounted on the outer edge of the rotating support plate 34, and the other end of the support member 341 is provided with a limiting protrusion, and the inner side wall of the rotating ring 31 is provided with a positioning portion that cooperates with the limiting protrusion; when the rotating ring 31 is driven to rotate, the limiting protrusion abuts against the positioning portion.

[0067] Specifically, there are four support members 341, and each support member 341 is fixedly mounted on the rotating support plate 34. One end of the support member 341 is fixedly mounted on the outer edge of the rotating support plate 34 by a screw, and the other end of the support member 341 is provided with a limiting protrusion, which abuts against the positioning portion of the inner wall of the rotating ring 31, and is used to limit the position and rotation angle of the rotating ring 31 during the rotation process, so that the rotating ring 31 always remains stable during operation.

[0068] Note that the above embodiments are merely preferred embodiments of the present invention and the technical principles employed, and are not intended to limit the present invention. A person skilled in the art, based on the principles of the present invention, can make various obvious changes, readjustments, and substitutions to the technical solutions described in the above embodiments without departing from the scope of protection of the present invention. Therefore, this specification should not be construed as limiting the present invention.

Claims

1. A blue film positioning device, characterized in that: The invention comprises a Y-direction positioning module (1), wherein the Y-direction positioning module (1) comprises a Y-direction lead screw (11), a first connecting seat (12) is connected to the Y-direction lead screw (11), the first connecting seat (12) can move in a set Y direction along the Y-direction lead screw (11), and an X-direction positioning module (2) is connected to the first connecting seat (12); The X-direction positioning module (2) includes an X-direction lead screw (21), a second connecting seat (22) is provided on the X-direction lead screw (21), the second connecting seat (22) can move in a set X direction along the X-direction lead screw (21), and a rotation positioning module (3) is connected to the second connecting seat (22); The rotary positioning module (3) comprises a rotary ring (31), the top of the rotary ring (31) is provided with a plurality of lifting mandrels (32) that can be driven to move in a set Z direction, and the top ends of the lifting mandrels (32) are connected to a pressing module (4); The pressing module (4) comprises an upper pressing plate (42) and a lower pressing plate (43), a blue film clamping position is formed between the upper pressing plate (42) and the lower pressing plate (43); a through hole is provided in the center of each of the upper pressing plate (42) and the lower pressing plate (43); A connecting screw (41) is provided at the bottom of the lower pressing plate (43), a threaded hole adapted to the connecting screw (41) is provided at the top of the lifting core shaft (32), and the connecting screw (41) is threadedly connected to the lifting core shaft (32); The two through holes are circular holes; The rotation positioning module (3) further comprises a top ring (33) mounted on the inner side wall of the rotation ring (31), wherein the top of the top ring (33) protrudes from one side of the top of the rotation ring (31); When the lifting core shaft (32) is driven to rotate in a preset first rotation direction, the pressing module (4) is driven to descend, and the top ring (33) extends into the blue film clamping position to lift up and press the bottom surface of the blue film; The rotary positioning module (3) further comprises a rotary motor (38), the output end of the rotary motor (38) being connected to a rotary synchronous wheel (39); The rotating synchronous wheel (39) is connected to the rotating ring (31) via a conveyor belt (302); a belt groove is provided on the outer side wall of the rotating ring (31); and the conveyor belt (302) is installed in the belt groove in a tensioned state; The rotation positioning module (3) comprises a rotation support plate (34); The rotating support plate (34) is provided with a plurality of support members (341) for supporting the rotation of the rotating ring (31); One end of the support member (341) is fixedly mounted on the outer edge of the rotating support plate (34), and the other end of the support member (341) is provided with a limiting protrusion, and the inner side wall of the rotating ring (31) is provided with a positioning portion that cooperates with the limiting protrusion; when the rotating ring (31) is driven to rotate to a predetermined angle, the limiting protrusion abuts against the positioning portion.

2. The blue film positioning device according to claim 1, characterized in that: The Y-direction positioning module (1) further comprises a Y-direction support plate (13), two opposite sides of the Y-direction support plate (13) are provided with Y-direction linear guide rails (14), and a Y-direction connecting seat (15) is slidably connected to the Y-direction linear guide rails (14); the Y-direction linear guide rails (14) and the Y-direction lead screw (11) are arranged in parallel; The X-direction positioning module (2) comprises an X-direction support plate (23), and the X-direction support plate (23) is fixedly connected to the Y-direction connecting seat (15).

3. The blue film positioning device according to claim 2, characterized in that: X-direction linear guide rails (24) are provided on opposite sides of the X-direction support plate (23), and an X-direction connecting seat (25) is slidably connected to the X-direction linear guide rails (24); the X-direction linear guide rails (24) and the X-direction lead screw (21) are arranged in parallel; The rotating support plate (34) is fixedly connected to the X-direction connecting seat (25).

4. The blue film positioning device according to claim 1, characterized in that: The Y-direction positioning module (1) further comprises a Y-direction motor (16), the output end of the Y-direction motor (16) being connected to the Y-direction lead screw (11) via a Y-direction coupling (17); both ends of the Y-direction lead screw (11) are connected to a Y-direction support seat (18).

5. The blue film positioning device according to claim 1, characterized in that: The X-direction positioning module (2) further comprises an X-direction motor (26), the output end of the X-direction motor (26) being connected to the X-direction lead screw (21) via an X-direction coupling (27); both ends of the X-direction lead screw (21) are connected to an X-direction support seat (28).

6. The blue film positioning device according to claim 1, characterized in that: The rotary positioning module (3) further includes a lifting motor (36); The lifting motor (36) is connected to a driving wheel (35), and the driving wheel (35) is connected to a plurality of driven wheels (37) through a synchronous belt (301), and each driven wheel (37) is fixedly connected to a lifting core shaft (32).

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