Quantity measuring jig for semiconductor frames

Abstract

The utility model relates to a jig for measuring the number of semiconductor frames. The semiconductor frame number measuring tool comprises a plurality of teeth, connected arc edges and a hand-held end. The teeth are arranged on the end face of the arc edge and extend outwards. The plurality of teeth are uniformly distributed along the arc edge; a counting gap is formed between every two adjacent teeth; the size of the counting gap is equal to the distance between adjacent lead frames; a plurality of scale marks and scales are arranged on the side surface of the arc edge; the scale lines are arranged opposite to the counting gaps; the scales are arranged at the inner ends of the scale lines; the scale marks are sequentially ranked from one end of the arc edge to the other end of the arc edge; and the number marked by the scale is related to the sequence number of the scale lines. The utility model provides a semiconductor frame number measuring tool used for lead frame counting. The semiconductor frame number measuring jig can reduce the counting difficulty, reduce the counting workload and improve the technical efficiency; moreover, the teeth effectively separate the adjacent lead frames, and the scale lines and the scales can assist in counting, thereby guaranteeing the counting accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary production tools for photoelectric couplers, in particular to a semiconductor frame quantity measurement jig. Background Art

[0002] An optocoupler is a device that uses the photoelectric effect to transmit electrical signals, isolating the input and output signals through optical signals. The optocoupler production process includes the following steps: 1. Material preparation, 2. Wafer fabrication, 3. Photolithography, 4. Chip testing, 5. Chip sintering and bonding, 6. Intermediate testing, 7. Coupling alignment, 8. Mounting, 9. Packaging, 10. Leak detection, 11. Burn-in screening, and 12. Final testing. After step 5, the optocoupler workflow primarily involves the semiconductor frame, or lead frame. This lead frame is a thin sheet with multiple lead units arranged in a pattern. Each lead unit includes a chip pad that secures the light-emitting / receiving chip and pins that connect to the chip pad. Manufacturers typically also have a flow rack for loading lead frames, where they are stacked. Counting the number of lead frames is a very important task in the production management of optocouplers. Although the production of optocouplers has been automated and the preliminary counting of lead frames can be completed by mechanical counting, the review of lead frames still requires manual counting. Manual counting of the lead frames stacked on the conveyor rack has the following disadvantages: 1. High workload and low counting efficiency; 2. High error rate. The existing technology lacks tools for counting lead frames. Utility Model Content

[0003] The purpose of the utility model is to solve the above problems and provide a semiconductor frame quantity measurement jig.

[0004] The technical solution of the utility model is as follows: a semiconductor frame quantity measuring jig comprises a plurality of teeth, an arc edge connected thereto and a handheld end; the teeth are arranged on the end face of the arc edge, extend outward and can cut into the gap between adjacent lead frames to distinguish the adjacent lead frames; the plurality of teeth are evenly distributed along the arc edge; counting gaps are formed between adjacent teeth; the size of the counting gaps is equivalent to the spacing between adjacent lead frames; each counting gap corresponds to a lead frame; the counting of the lead frames is converted into the counting of the counting gaps; a plurality of scale lines and numbers are provided on the side face of the arc edge; the scale lines are arranged opposite to the counting gaps; the numbers are marked The number is set at the inner end of the scale line; the scale lines are arranged in sequence from one end of the arc edge to the other end of the arc edge; the sequence number corresponding to the scale line is the number of counting gaps, which is also the number of lead frames; the lead frames are stacked on the flow rack; the arc edge is attached to the end face of the lead frame, so that the lower teeth cut into the gaps of adjacent lead frame parts; then the entire semiconductor frame quantity measuring jig rolls upward; until the top lead frame is stuck in the counting gap; the reading of the scale line opposite the counting gap corresponds to the number of lead frames; the number marked on the number is related to the sequence number of the scale line, which assists in reading the scale line.

[0005] Preferably, the scale lines and the numbers are symmetrically arranged about the semiconductor frame quantity measurement jig, so that the lead frame can be read on both sides of the semiconductor frame quantity measurement jig, thereby improving applicability.

[0006] Preferably, the scale lines include evenly distributed counting groups; the counting groups include a long scale and several short scales; within the counting group, the several short scales are arranged in front and the long scales are arranged in the back; the numbers are set at the inner end of the long scales; this can avoid the numbers filling up the side of the semiconductor frame quantity measuring fixture, causing visual interference to the readings.

[0007] Furthermore, within the same counting group, the sum of the number of short scales and long scales is a number that is easy to count, which is convenient for calculation when reading.

[0008] Preferably, the tooth is triangular; one side of the triangle is connected to the edge of the arc; the vertex angle opposite to the side extends outward; and the vertex angle of the tooth is conducive to cutting into the gap between adjacent lead frames.

[0009] Furthermore, the tips of the teeth are rounded to reduce the damage caused by the teeth cutting into the gaps between adjacent lead frames.

[0010] Preferably, the semiconductor frame quantity measuring jig is a fan-shaped plate as a whole; the worker holds the handheld end and counts the lead frames by turning his wrist; the handheld end is set near the center of the fan-shaped plate to reduce the worker's wrist turning angle and facilitate operation.

[0011] Furthermore, the handheld end has a straight edge, which is convenient for workers to hold; the straight edge is arranged in the center relative to the arc edge, so that the worker's wrist turning angle matches the rolling angle of the semiconductor frame quantity measuring fixture, which meets ergonomic requirements.

[0012] Furthermore, finger holes are provided between the straight edge and the arc edge to facilitate the passage of the index finger, middle finger, ring finger, and little finger, so that the worker can change from grasping the semiconductor frame quantity measuring jig to holding the semiconductor frame quantity measuring jig and hold the semiconductor frame quantity measuring jig tightly.

[0013] Furthermore, the finger hole is arranged in the center relative to the straight edge, which increases the comfort of workers holding the semiconductor frame quantity measurement jig.

[0014] Furthermore, the finger hole is a rectangular hole, which increases the comfort of workers holding the semiconductor frame quantity measurement jig.

[0015] The beneficial effects of the present invention are as follows: the semiconductor frame quantity measurement jig of the present invention has the following advantages:

[0016] (1) The utility model provides a semiconductor frame quantity measuring jig for lead frame counting; the semiconductor frame quantity measuring jig can reduce the difficulty of counting, reduce the counting workload, and improve technical efficiency; and the teeth effectively separate adjacent lead frames, and the scale lines and numbers can assist in counting, ensuring the counting accuracy;

[0017] (2) The teeth of the present invention are triangular, which is conducive to cutting into the gap between adjacent lead frames. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a working state diagram of the semiconductor frame quantity measurement jig of the utility model;

[0019] Figure 2 yes Figure 1 A vertical cross-sectional view of

[0020] Figure 3 This is a three-dimensional semiconductor frame quantity measurement fixture of the utility model. Figure 1 ;

[0021] Figure 4 This is a three-dimensional semiconductor frame quantity measurement fixture of the utility model. Figure 2 ;

[0022] In the picture: 00. Lead frame, 01. Flow rack,

[0023] 1. Teeth, 11. Counting gap, 12. Rounded corner A, 2. Curved edge, 21. Scale mark, 211. Long scale mark, 212. Short scale mark, 22. Number mark, 31. Straight edge, 311. Rounded corner B, 32. Finger hole, 321. Rounded corner C. DETAILED DESCRIPTION

[0024] Example 1: See Figure 1-4 A semiconductor frame quantity measuring jig includes a plurality of teeth 1, an arc edge 2 connected thereto, and a handheld end; the teeth 1 are arranged on the end surface of the arc edge 2, extending outward, and can cut into the gaps between adjacent lead frames 00 to distinguish adjacent lead frames 00; the plurality of teeth 1 are evenly distributed along the arc edge 2; there is a counting gap 11 between adjacent teeth 1; the size of the counting gap 11 is equivalent to the spacing between adjacent lead frames 00; each counting gap 11 corresponds to a lead frame 00; the counting of the lead frame 00 is converted into the counting of the counting gap 11; a plurality of scale lines 21 and number marks 22 are provided on the side of the arc edge 2; the scale lines 21 are arranged opposite the counting gap 11; the number marks 22 are arranged on the scale lines 21 inner end position; scale lines 21 are arranged in sequence from one end of arc edge 2 to the other end of arc edge 2; the sequence number corresponding to scale line 21 is the number of counting gaps 11, which is also the number of lead frames 00; lead frames 00 are stacked on flow rack 01; arc edge 2 is attached to the end face of lead frame 00, so that the lower tooth 1 cuts into the gap between adjacent lead frames 00; then the entire semiconductor frame quantity measuring jig rolls upward; until the top lead frame 00 is stuck in the counting gap 11; the reading of the scale line 21 opposite to the counting gap 11 corresponds to the number of lead frames 00; the number 22 marked on the number 22 is related to the sequence number of scale line 21, which assists in reading the scale line 21.

[0025] Compared with the prior art, the present invention provides a semiconductor frame quantity measuring jig for counting lead frames 00; the semiconductor frame quantity measuring jig can reduce the difficulty of counting, reduce the counting workload, and improve technical efficiency; and the teeth 1 effectively separate adjacent lead frames 00, and the scale lines 21 and numbers 22 can assist in counting and ensure the accuracy of counting.

[0026] In this embodiment, the common multiple of 5 is used as the index number 22.

[0027] The scale lines 21 and the numbers 22 are symmetrically arranged with respect to the semiconductor frame quantity measuring jig, so that the lead frame 00 can be read on both sides of the semiconductor frame quantity measuring jig, thereby improving applicability.

[0028] Scale lines 21 include evenly spaced counting groups; each counting group includes a long scale mark 211 and several short scale marks 212. Within the counting group, the short scale marks 212 are arranged in front, followed by the long scale mark 211. The numbers 22 are positioned at the inner end of the long scale marks 211. This prevents the numbers 22 from filling up the side of the semiconductor frame measurement jig and causing visual interference with the reading. In this embodiment, there are four short scale marks 212 in the same counting group.

[0029] In the same counting group, the sum of the number of the short scales 212 and the long scales 211 is a number that is easy to count, which is convenient for calculation when reading.

[0030] The side surface of the tooth 1 is at a certain distance from the side surface of the arc edge 2; the tooth 1 can be horizontally inserted into the gap between adjacent lead frames 00, and then rotated 90 degrees to achieve the purpose of vertically inserting the tooth 1 into the gap between adjacent lead frames 00.

[0031] The tooth 1 is triangular; one side of the triangle is connected to the arc edge 2; the vertex angle corresponding to the side extends outward; the vertex angle of the tooth 1 is conducive to cutting into the gap between adjacent lead frames 00.

[0032] The tip of the tooth 1 is provided with a rounded corner 12 to reduce the damage caused by the tooth 1 when it cuts into the gap between adjacent lead frames 00.

[0033] The semiconductor frame quantity measurement fixture is a fan-shaped plate. A worker holds a handheld terminal and counts the lead frames 00 by turning their wrist. The handheld terminal is set near the center of the fan-shaped plate to reduce the worker's wrist turning angle and facilitate operation.

[0034] The handheld end has a straight edge 31, which is convenient for workers to hold; the straight edge 31 is arranged in the center relative to the arc edge 2, so that the worker's wrist turning angle matches the rolling angle of the semiconductor frame quantity measurement fixture, which meets ergonomic requirements.

[0035] A finger hole 32 is provided between the straight edge 31 and the arc edge 2 to facilitate the insertion of the index finger, middle finger, ring finger and little finger, so that the worker can change from grasping the semiconductor frame quantity measurement jig to holding the semiconductor frame quantity measurement jig and grasp the semiconductor frame quantity measurement jig tightly.

[0036] The finger hole 32 is centered relative to the straight edge 31 , thereby increasing the comfort level for workers holding the semiconductor frame quantity measurement jig.

[0037] Counting process of this embodiment: Hold the straight edge 31 with your hand and hold the semiconductor frame quantity measuring jig vertically, with the small mark 22 facing downward and the large mark 22 overlong; stack the lead frames 00 in the flow rack 01; observe whether the gaps between adjacent lead frames 00 are uniform; if not, readjust the lead frames 00 until the gaps between adjacent lead frames 00 are uniform; align the lowest tooth 1 under the bottom of the lowest lead frame 00 in the flow rack 01, so that the lowest counting gap 11 just catches the lowest lead frame 00; place the end face of the arc edge 2 against the end face of the lead frame 00; roll the semiconductor frame quantity measuring jig upward; when the top lead frame 00 is caught in a counting gap 11, the sequence number of the scale line 21 corresponding to the counting gap 11 is the total number of lead frames 00 stacked in the flow rack 01; the number read on the scale line 21 can be assisted by the mark 22.

[0038] Embodiment 2: Embodiment 2 is basically the same as Embodiment 1, and the similarities are not repeated here. The difference is that the finger hole 32 is a rectangular hole, which increases the comfort of workers holding the semiconductor frame quantity measurement jig.

[0039] Both ends of the straight edge 31 are rounded corners B 311, which are convenient for workers to hold and avoid being cut.

[0040] The four corners of the finger hole 32 are rounded 321 to protect the worker's index finger, middle finger, ring finger and little finger from being cut.

Claims

1. A semiconductor frame quantity measurement jig, characterized in that: The invention comprises a plurality of teeth, a connected arc edge and a hand-held end; the teeth are arranged on the end surface of the arc edge and extend outward; the plurality of teeth are evenly distributed along the arc edge; there is a counting gap between adjacent teeth; the size of the counting gap is equivalent to the spacing between adjacent lead frames; a plurality of scale lines and numbers are provided on the side of the arc edge; the scale lines are arranged opposite the counting gaps; the numbers are arranged at the inner ends of the scale lines; the scale lines are arranged in sequence from one end of the arc edge to the other end of the arc edge; and the numbers marked on the numbers are related to the sequence of the scale lines.

2. The semiconductor frame quantity measurement jig according to claim 1, characterized in that: The scale lines and numbers are symmetrically arranged with respect to the semiconductor frame quantity measuring jig.

3. The semiconductor frame quantity measurement jig according to claim 1, characterized in that: The scale lines include evenly distributed counting groups; the counting groups include a long scale and a plurality of short scales; within the counting groups, the plurality of short scales are arranged in front and the long scale is arranged in the back; and the number mark is set at the inner end position of the long scale.

4. The semiconductor frame quantity measurement jig according to claim 1, characterized in that: The tooth is triangular; one side of the triangle is connected to the edge of the arc; and the vertex opposite to the side protrudes outward.

5. The semiconductor frame quantity measurement jig according to claim 4, characterized in that: The tips of the teeth are rounded.

6. The semiconductor frame quantity measurement jig according to claim 1, characterized in that: The whole is a fan-shaped plate; the handheld end is arranged near the center of the fan-shaped plate.

7. The semiconductor frame quantity measurement jig according to claim 6, characterized in that: The handheld end has a straight edge; the straight edge is arranged in the center relative to the arc edge.

8. The semiconductor frame quantity measurement jig according to claim 7, characterized in that: A finger hole is provided between the straight edge and the arc edge.

9. The semiconductor frame quantity measurement jig according to claim 8, characterized in that: The finger-penetrating hole is centrally arranged relative to the straight edge.

10. The semiconductor frame quantity measurement jig according to claim 8, characterized in that: The finger-penetrating hole is a rectangular hole.

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