Lead frame positioning jig structure

Abstract

The utility model discloses a lead frame positioning jig structure which comprises a base and an X-axis sliding block installed on the base in a sliding mode in the X-axis direction, and the X-axis sliding block is provided with a positioning needle assembly. An X-axis adjusting screw is rotationally mounted on the base, a first inner threaded hole corresponding to the X-axis adjusting screw is formed in the X-axis sliding block, and the X-axis adjusting screw is screwed in the first inner threaded hole of the X-axis sliding block; the lead frame positioning jig structure further comprises a Y-axis sliding block which is installed on the base in a sliding mode in the Y-axis direction, and the Y-axis sliding block is also provided with a positioning needle assembly. A Y-axis adjusting screw is rotationally installed on the base, a second inner threaded hole is formed in the position, corresponding to the Y-axis adjusting screw, of the Y-axis sliding block, and the Y-axis adjusting screw is connected into the second inner threaded hole of the Y-axis sliding block in a screwed mode. Through the structural design, the double-positioning-hole positioning device has the advantages of being novel in structural design and high in adaptability, and can be effectively suitable for double-positioning-hole positioning of lead frames of different sizes and specifications.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a lead wire frame positioning fixture structure. Background Technology

[0002] Lead frame as integrated circuit A lead frame is a key structural component that uses bonding materials (gold wire, aluminum wire, copper wire) to achieve electrical connection between the internal circuit leads of the chip and the external leads, forming an electrical circuit. It acts as a bridge connecting to external wires. Most semiconductor integrated circuits require the use of lead frames, which are an important basic material in the electronics and information industry.

[0003] During the electroplating or welding process of the lead frame, a fixture is needed to position the lead frame. The lead frame has a pre-fabricated positioning hole structure. When the fixture is used to position the lead frame, the positioning pin of the fixture is inserted into the positioning hole of the lead frame.

[0004] It should be noted that the Chinese utility model patent with patent number 202320970430.0 and patent name "A Paper Tape Positioning Clamp" specifically discloses the following technical solution: A paper tape positioning clamp includes two oppositely arranged mounting plates and an X-axis guide post fixedly connected between the two mounting plates. An X-axis slider is slidably connected to the X-axis guide post. An adjusting screw is rotatably connected between the two mounting plates. A threaded drive groove is provided on the X-axis slider. The adjusting screw is threadedly connected in the threaded drive groove. A Z-axis slider is connected to the X-axis slider along the Z-axis direction by a first bolt. The Z-axis slider and the first bolt are adjustable along the Z-axis direction. A first clamping block and a second clamping block are arranged opposite each other along the Y-axis direction on the Z-axis slider. The first clamping block is connected to the Z-axis slider by a second bolt. The first clamping block and the second bolt are adjustable along the Y-axis direction. A driving component is provided on the Z-axis slider for driving the second clamping block to move toward or away from the first clamping block. A paper tape clamping groove is formed between the first clamping block and the second clamping block. A positioning pin is fixed in the paper tape clamping groove on the second clamping block.

[0005] When the paper tape positioning fixture is working, the adjusting screw drives the X-axis slider to move along the X-axis direction, thereby causing the positioning pin to move along the X-axis direction to adjust its position.

[0006] It should be noted that the above-mentioned paper tape positioning fixture has the following defects: it is not applicable to the positioning of double positioning holes with spaced lead frames, and it is even less applicable to the positioning of double positioning holes with lead frames of different sizes and specifications. Utility Model Content

[0007] The purpose of this utility model is to provide a lead frame positioning fixture structure to address the shortcomings of the existing technology. This lead frame positioning fixture structure has a novel design, strong adaptability, and can be effectively applied to the positioning of double positioning round holes for lead frames of different sizes and specifications.

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0009] A lead frame positioning fixture structure includes a base and an X-axis slider that is slidably mounted on the base along the X-axis direction. The X-axis slider is equipped with a positioning pin assembly. An X-axis adjusting screw is rotatably mounted on the base. The X-axis slider has a first internal threaded hole corresponding to the X-axis adjusting screw. The X-axis adjusting screw is screwed into the first internal threaded hole of the X-axis slider.

[0010] The lead frame positioning fixture structure also includes a Y-axis slider that is slidably mounted on the base along the Y-axis direction. The Y-axis slider is also equipped with a positioning pin assembly. The base is rotatably mounted with a Y-axis adjusting screw. The Y-axis slider has a second internal threaded hole corresponding to the Y-axis adjusting screw. The Y-axis adjusting screw is screwed into the second internal threaded hole of the Y-axis slider.

[0011] The base includes a bottom pad and a fixing block screwed onto the upper surface of the bottom pad;

[0012] The fixed block has an X-axis groove that extends along the X-axis direction and penetrates vertically, corresponding to the X-axis slider. The X-axis slider is slidably installed in the X-axis groove. The X-axis adjusting screw is rotatably installed on the fixed block, and the threaded end of the X-axis adjusting screw extends into the X-axis groove.

[0013] The fixed block has a Y-axis groove that extends along the Y-axis direction and penetrates vertically, corresponding to the Y-axis slider. The Y-axis slider is slidably installed in the Y-axis groove. The Y-axis adjusting screw is rotatably installed on the fixed block, and the threaded end of the Y-axis adjusting screw extends into the Y-axis groove.

[0014] The X-axis slider and the Y-axis slider respectively have vertical through slider mounting holes corresponding to the positioning pin assemblies;

[0015] Each positioning pin assembly includes a vertical positioning pin, a compression spring, and a headless screw arranged sequentially from top to bottom. The upper end of each compression spring abuts against the corresponding vertical positioning pin, and the lower end of each compression spring abuts against the corresponding headless screw. Each headless screw is screwed into the lower end of the corresponding slider mounting hole. The upper end of each vertical positioning pin protrudes from the upper surface of the corresponding X-axis slider and Y-axis slider.

[0016] Each vertical positioning pin has a positioning pin shoulder at its lower end, and each slider mounting hole has a limiting shoulder located above the positioning pin shoulder of the corresponding vertical positioning pin on its inner wall. The positioning pin shoulder of each vertical positioning pin abuts against the corresponding limiting shoulder.

[0017] The bottom pad has a first through hole that is aligned and communicates with the X-axis slide groove, and a second through hole that is aligned and communicates with the Y-axis slide groove.

[0018] Each of the vertical positioning pins has a reinforcing section in the middle.

[0019] The fixing block has a first stepped hole corresponding to the X-axis adjusting screw, and the large end of the X-axis adjusting screw is located in the first stepped hole of the fixing block; the side wall of the fixing block is screwed with a first side pressure block for limiting the large end of the X-axis adjusting screw to be located in the first stepped hole.

[0020] The fixing block has a second stepped hole corresponding to the Y-axis adjusting screw, and the large end of the Y-axis adjusting screw is located in the second stepped hole of the fixing block; the side wall of the fixing block is screwed with a second side pressure block for limiting the large end of the Y-axis adjusting screw to be located in the second stepped hole.

[0021] The first and second side pressure blocks each have pressure block through holes for inserting a handle.

[0022] The left side wall of the fixing block is screwed onto the inherent left side plate, and the right side wall of the fixing block is screwed onto the inherent right side plate. The left side plate and the right side plate are respectively arranged at intervals with the bottom pad plate.

[0023] Compared with the prior art, the present invention has the following beneficial effects, specifically:

[0024] 1. When positioning the lead frame, the positioning pin assembly on the X-axis slider is inserted into one of the positioning holes of the lead frame, and the positioning pin assembly on the Y-axis slider is inserted into the other positioning hole of the lead frame. The lead frame is positioned by two positioning pin assemblies on the X-axis slider and the Y-axis slider to meet the positioning requirements of lead frame welding or electroplating.

[0025] 2. This utility model can adaptively adjust the positions of the X-axis slider and Y-axis slider according to the size specifications of the lead frame, so as to adapt to the dual positioning round hole positioning of lead frames of different sizes and specifications;

[0026] 3. Therefore, the lead frame positioning fixture of this utility model has the advantages of novel structural design and strong adaptability, and can be effectively applied to the positioning of double positioning round holes of lead frames of different sizes and specifications. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0028] Figure 1 This is a schematic diagram of the structure of this utility model.

[0029] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0030] Figure 3 This is an exploded view of the present invention.

[0031] Figure 4 This is a cross-sectional schematic diagram of the present invention.

[0032] Figure 5 This is a cross-sectional view of another location of the present invention.

[0033] exist Figures 1 to 5 This includes:

[0034] 1-Base; 11-Bottom pad; 111-First through hole; 112-Second through hole; 12-Fixing block; 121-X-axis slide groove; 122-Y-axis slide groove; 123-First stepped hole; 124-Second stepped hole; 2-X-axis slider; 21-First internal threaded hole; 3-X-axis adjusting screw; 4-Y-axis slider; 41-Second internal threaded hole; 5-Y-axis adjusting screw; 6-Positioning pin assembly; 61-Vertical positioning pin; 611-Positioning pin shoulder; 62-Compression spring; 63-Headless screw; 71-Slider mounting hole; 72-Limit shoulder; 81-First side pressure block; 82-Second side pressure block; 83-Pressure block through hole; 91-Left side plate; 92-Right side plate. Detailed Implementation

[0035] The present invention will now be described in conjunction with specific embodiments.

[0036] Example 1, as Figures 1 to 4 As shown, a lead frame positioning fixture structure includes a base 1 and an X-axis slider 2 that is slidably mounted on the base 1 along the X-axis direction. The X-axis slider 2 is equipped with a positioning pin assembly 6. An X-axis adjusting screw 3 is rotatably mounted on the base 1. The X-axis slider 2 has a first internal threaded hole 21 corresponding to the X-axis adjusting screw 3. The X-axis adjusting screw 3 is screwed into the first internal threaded hole 21 of the X-axis slider 2.

[0037] Furthermore, such as Figures 1 to 4As shown, the feature is that: the lead frame positioning fixture structure also includes a Y-axis slider 4 that is slidably installed on the base 1 along the Y-axis direction, and the Y-axis slider 4 is also equipped with a positioning pin assembly 6; the base 1 is rotatably installed with a Y-axis adjusting screw 5, and the Y-axis slider 4 has a second internal thread hole 41 corresponding to the Y-axis adjusting screw 5, and the Y-axis adjusting screw 5 is screwed into the second internal thread hole 41 of the Y-axis slider 4.

[0038] When positioning the lead frame, the positioning pin assembly 6 on the X-axis slider 2 is inserted into one of the positioning holes of the lead frame, and the positioning pin assembly 6 on the Y-axis slider 4 is inserted into the other positioning hole of the lead frame. The lead frame is positioned by two positioning pin assemblies 6 on the X-axis slider 2 and the Y-axis slider 4 to meet the positioning requirements of lead frame welding or electroplating.

[0039] It should be emphasized that, for the lead frame positioning fixture structure of this embodiment, during use, rotating the X-axis adjusting screw 3 drives the X-axis slider 2 to move and adjust its position along the X-axis direction, and rotating the Y-axis adjusting screw 5 drives the Y-axis slider 4 to move and adjust its position along the Y-axis direction. That is, the lead frame positioning fixture structure of this embodiment can adaptively adjust the positions of the X-axis slider 2 and the Y-axis slider 4 according to the size specifications of the lead frame, so as to adapt to the positioning of the double positioning round holes of lead frames of different sizes and specifications.

[0040] In summary, the lead frame positioning fixture structure of this embodiment has the advantages of novel structural design and strong adaptability, and can be effectively applied to the positioning of double positioning round holes for lead frames of different sizes and specifications.

[0041] Example 2, as Figures 1 to 4 As shown, the difference between this embodiment 2 and embodiment 1 is that the base 1 includes a bottom pad 11 and a fixing block 12 screwed onto the upper surface of the bottom pad 11.

[0042] The fixed block 12 has an X-axis slide groove 121 that extends along the X-axis direction and penetrates vertically to the X-axis slider 2. The X-axis slider 2 is slidably installed in the X-axis slide groove 121. The X-axis adjusting screw 3 is rotatably installed on the fixed block 12, and the threaded end of the X-axis adjusting screw 3 extends into the X-axis slide groove 121.

[0043] Correspondingly, the fixed block 12 has a Y-axis slide groove 122 that extends along the Y-axis direction and penetrates vertically to the Y-axis slider 4. The Y-axis slider 4 is slidably installed in the Y-axis slide groove 122. The Y-axis adjusting screw 5 is rotatably installed on the fixed block 12, and the threaded end of the Y-axis adjusting screw 5 extends into the Y-axis slide groove 122.

[0044] When the X-axis adjusting screw 3 is rotated, the X-axis slider 2 moves along the X-axis slide groove 121; the X-axis slide groove 121 guides the X-axis slider 2 to ensure that the X-axis slider 2 moves accurately along the X-axis direction. Similarly, when the Y-axis adjusting screw 5 is rotated, the Y-axis slider 4 moves along the Y-axis slide groove 122; the Y-axis slide groove 122 guides the Y-axis slider 4 to ensure that the Y-axis slider 4 moves accurately along the Y-axis direction.

[0045] Example 3, as Figure 5 As shown, the difference between this embodiment 3 and embodiment 2 is that the X-axis slider 2 and the Y-axis slider 4 are respectively provided with vertically penetrating slider mounting holes 71 corresponding to the positioning pin assemblies 6.

[0046] Each positioning pin assembly 6 includes a vertical positioning pin 61, a compression spring 62, and a headless screw 63 arranged sequentially from top to bottom. The upper end of each compression spring 62 abuts against the corresponding vertical positioning pin 61, and the lower end of each compression spring 62 abuts against the corresponding headless screw 63. Each headless screw 63 is screwed into the lower end of the corresponding slider mounting hole 71, and the upper end of each vertical positioning pin 61 protrudes from the upper surface of the corresponding X-axis slider 2 and Y-axis slider 4.

[0047] Furthermore, each vertical positioning pin 61 has a positioning pin shoulder 611 at its lower end, and each slider mounting hole 71 has a limiting shoulder 72 located above the positioning pin shoulder 611 of the corresponding vertical positioning pin 61 on its inner wall. The positioning pin shoulder 611 of each vertical positioning pin 61 abuts against the corresponding limiting shoulder 72.

[0048] When positioning the lead frame using the lead frame positioning fixture structure of this embodiment three, the compression spring 62 can play a buffering and protective role, thereby preventing the vertical positioning pin 61 from failing to adapt and move in the event of a collision.

[0049] Example 4, as Figures 2 to 4 As shown, the difference between this embodiment four and embodiment three is that the bottom pad 11 has a first through hole 111 that is aligned and communicates with the X-axis slide groove 121 and a second through hole 112 that is aligned and communicates with the Y-axis slide groove 122.

[0050] By providing the first through hole 111 and the second through hole 112, this fourth embodiment exposes the headless screws 63 of each positioning pin assembly 6, thereby facilitating the replacement and maintenance of the positioning pin assembly 6.

[0051] Example 5 differs from Example 3 in that each vertical positioning pin 61 has a reinforcing section in its middle part.

[0052] By setting up a reinforced section structure, this fifth embodiment can effectively improve the overall strength of the vertical positioning pin 61, thereby reducing the risk of breakage of the vertical positioning pin 61 and extending its service life.

[0053] Example 6, as Figures 1 to 4 As shown, the difference between this embodiment six and embodiment two is that: the fixing block 12 has a first stepped hole 123 corresponding to the X-axis adjusting screw 3, and the large end of the X-axis adjusting screw 3 is located in the first stepped hole 123 of the fixing block 12; the side wall of the fixing block 12 is screwed with a first side pressure block 81 for limiting the large end of the X-axis adjusting screw 3 to be located in the first stepped hole 123.

[0054] The fixing block 12 has a second stepped hole 124 corresponding to the Y-axis adjusting screw 5, and the large end of the Y-axis adjusting screw 5 is located in the second stepped hole 124 of the fixing block 12; the side wall of the fixing block 12 is screwed with a second side pressure block 82 for limiting the large end of the Y-axis adjusting screw 5 to be located in the second stepped hole 124.

[0055] In addition, the first side pressure block 81 and the second side pressure block 82 are respectively provided with pressure block through holes 83 for the handle to be inserted.

[0056] During the rotation of the X-axis adjusting screw 3 and the Y-axis adjusting screw 5, the operator inserts a wrench into the first step hole 123 or the second step hole 124 to connect the wrench with the X-axis adjusting screw 3 or the Y-axis adjusting screw 5, thereby facilitating the rotation of the X-axis adjusting screw 3 and the Y-axis adjusting screw 5 by means of the wrench.

[0057] Example 7, as Figures 1 to 3 As shown, the difference between this embodiment seven and embodiment two is that the left side wall of the fixing block 12 is screwed to the inherent left side plate 91, and the right side wall of the fixing block 12 is screwed to the inherent right side plate 92. The left side plate 91 and the right side plate 92 are respectively arranged at intervals with the bottom pad plate 11.

[0058] Since the left side plate 91 and the right side plate 92 are spaced apart from the base plate, when the operator moves the lead frame positioning fixture structure, the operator can hold the left side plate 91 and the right side plate 92 on the corresponding side with both hands to improve the convenience of handling.

[0059] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A lead frame positioning fixture structure, comprising a base (1) and an X-axis slider (2) slidably mounted on the base (1) along the X-axis direction, wherein the X-axis slider (2) is provided with a positioning pin assembly (6); the base (1) is rotatably mounted with an X-axis adjusting screw (3), and the X-axis slider (2) is provided with a first internal thread hole (21) corresponding to the X-axis adjusting screw (3), wherein the X-axis adjusting screw (3) is screwed into the first internal thread hole (21) of the X-axis slider (2); Its features are: The lead frame positioning fixture structure also includes a Y-axis slider (4) that is slidably mounted on the base (1) along the Y-axis direction. The Y-axis slider (4) is also equipped with a positioning pin assembly (6). The base (1) is rotatably mounted with a Y-axis adjusting screw (5). The Y-axis slider (4) has a second internal thread hole (41) corresponding to the Y-axis adjusting screw (5). The Y-axis adjusting screw (5) is screwed into the second internal thread hole (41) of the Y-axis slider (4).

2. The lead frame positioning fixture structure according to claim 1, characterized in that: The base (1) includes a bottom pad (11) and a fixing block (12) screwed onto the upper surface of the bottom pad (11). The fixed block (12) has an X-axis groove (121) that extends along the X-axis direction and penetrates vertically to the X-axis slider (2). The X-axis slider (2) is slidably installed in the X-axis groove (121). The X-axis adjusting screw (3) is rotatably installed on the fixed block (12), and the threaded end of the X-axis adjusting screw (3) extends into the X-axis groove (121). The fixed block (12) has a Y-axis groove (122) that extends along the Y-axis direction and penetrates vertically to the Y-axis slider (4). The Y-axis slider (4) is slidably installed in the Y-axis groove (122). The Y-axis adjusting screw (5) is rotatably installed on the fixed block (12), and the threaded end of the Y-axis adjusting screw (5) extends into the Y-axis groove (122).

3. The lead frame positioning fixture structure according to claim 2, characterized in that: The X-axis slider (2) and the Y-axis slider (4) are respectively provided with vertical through slider mounting holes (71) corresponding to the positioning pin assembly (6). Each positioning pin assembly (6) includes a vertical positioning pin (61), a compression spring (62), and a headless screw (63) arranged from top to bottom. The upper end of each compression spring (62) abuts against the corresponding vertical positioning pin (61), and the lower end of each compression spring (62) abuts against the corresponding headless screw (63). Each headless screw (63) is screwed into the lower end of the corresponding slider mounting hole (71). The upper end of each vertical positioning pin (61) protrudes from the upper surface of the corresponding X-axis slider (2) and Y-axis slider (4). Each vertical positioning pin (61) has a positioning pin shoulder (611) at its lower end. Each slider mounting hole (71) has a limiting shoulder (72) located above the positioning pin shoulder (611) of the corresponding vertical positioning pin (61). The positioning pin shoulder (611) of each vertical positioning pin (61) abuts against the corresponding limiting shoulder (72).

4. The lead frame positioning fixture structure according to claim 3, characterized in that: The bottom pad (11) has a first through hole (111) that is aligned and communicates with the X-axis slide groove (121) and a second through hole (112) that is aligned and communicates with the Y-axis slide groove (122).

5. The lead frame positioning fixture structure according to claim 3, characterized in that: Each of the vertical positioning pins (61) has a reinforcing section in the middle.

6. The lead frame positioning fixture structure according to claim 2, characterized in that: The fixing block (12) has a first stepped hole (123) corresponding to the X-axis adjusting screw (3), and the large end of the X-axis adjusting screw (3) is located in the first stepped hole (123) of the fixing block (12); the side wall of the fixing block (12) is screwed with a first side pressure block (81) for limiting the large end of the X-axis adjusting screw (3) to be located in the first stepped hole (123). The fixing block (12) has a second stepped hole (124) corresponding to the Y-axis adjusting screw (5), and the large end of the Y-axis adjusting screw (5) is located in the second stepped hole (124) of the fixing block (12); the side wall of the fixing block (12) is screwed with a second side pressure block (82) for limiting the large end of the Y-axis adjusting screw (5) to be located in the second stepped hole (124). The first side pressure block (81) and the second side pressure block (82) are respectively provided with pressure block through holes (83) for the handle to be inserted.

7. The lead frame positioning fixture structure according to claim 2, characterized in that: The left side wall of the fixing block (12) is screwed onto the inherent left side plate (91), and the right side wall of the fixing block (12) is screwed onto the inherent right side plate (92). The left side plate (91) and the right side plate (92) are respectively arranged at intervals with the bottom pad plate (11).

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