阅读说明：本技术 观察散热片贴附状态的治具及其使用方法 (Jig for observing attaching state of radiating fin and using method thereof ) 是由 段东瑜 盛余珲 于 2021-06-18 设计创作，主要内容包括：本申请是关于一种观察散热片贴附状态的治具。该治具包括：治具底板以及沿治具底板长度方向的两侧设置的治具侧壁；治具底板上设有框架放置区,框架放置区用于放置贴附有散热片的引线框架,在框架放置区的底部设置有散热片观察槽；治具侧壁上设置有轨道卡槽,轨道卡槽用于承托引线框架,防止引线框架在翻转时掉落。本申请提供的方案,能够及时检查散热片的贴附状态,并避免了引线框架的掉地风险,提高产品质量以及生产效率。(The application relates to a tool of attached state of observation fin. This tool includes: the jig comprises a jig base plate and jig side walls arranged on two sides of the jig base plate in the length direction; the jig base plate is provided with a frame placing area, the frame placing area is used for placing a lead frame attached with a radiating fin, and the bottom of the frame placing area is provided with a radiating fin observation groove; be provided with the track draw-in groove on the tool lateral wall, the track draw-in groove is used for bearing lead frame, prevents that lead frame from dropping when the upset. The scheme provided by the application can timely inspect the attaching state of the radiating fin, avoids the ground falling risk of the lead frame, and improves the product quality and the production efficiency.)

1. The utility model provides an observe attached state's of fin tool, its characterized in that includes:

the jig comprises a jig base plate (1) and jig side walls (2) arranged on two sides of the jig base plate (1) in the length direction;

the jig base plate (1) is provided with a frame placing area, the frame placing area is used for placing a lead frame (4) attached with a radiating fin (3), and the bottom of the frame placing area is provided with a radiating fin observation groove (5);

be provided with track draw-in groove (6) on tool lateral wall (2), track draw-in groove (6) are used for the bearing lead frame (4), prevent lead frame (4) drop when the upset.

2. The jig for observing the attaching state of a heat sink as claimed in claim 1,

and two ends of the frame placing area in the length direction are provided with a positioning clamping block (7) and a movable stop block (8).

3. The jig for observing the attaching state of a heat sink as claimed in claim 2,

a rotating shaft (81) is arranged on the jig base plate (1);

the movable stop block (8) is connected with the rotating shaft (81).

4. The jig for observing the attaching state of a heat sink as claimed in claim 1,

the width of the rail clamping groove (6) is matched with the thickness of the lead frame (4);

the track clamping groove (6) comprises a first track clamping groove and a second track clamping groove;

the first rail clamping groove and the second rail clamping groove are located on the same horizontal plane.

5. The jig for observing the attaching state of a heat sink as set forth in claim 4,

the distance between the first groove bottom of the first rail clamping groove and the second groove bottom of the second rail clamping groove is equal to the width of the lead frame (4);

the distance between the first groove top of the first rail clamping groove and the second groove top of the second rail clamping groove is smaller than the width of the lead frame (4).

6. The jig for observing the attaching state of a heat sink as claimed in claim 1,

a first shockproof rubber (9) is arranged in the side wall (2) of the jig;

and one surface of the jig base plate (1) provided with the positioning fixture block (7) is used as the upper surface of the jig base plate, and a second shockproof rubber (10) is arranged in the lower surface of the jig base plate opposite to the upper surface of the jig base plate.

7. The jig for observing an attached state of a heat sink according to claim 6,

the first shockproof rubber (9) is arranged in the side wall (2) of the jig and is positioned above the rail clamping groove (6);

the second shockproof rubber (10) is arranged on the lower surface of the jig bottom plate and embedded into the jig side wall (2).

8. The jig for observing the attaching state of a heat sink as claimed in claim 1,

the jig is characterized in that a jig bayonet (11) is arranged on at least one side of the width direction of the jig bottom plate (1), the jig bayonet (11) is used for being connected with a material box (12) of the lead frame (4) in a clamping mode, and the material box carrying groove (121) in the material box (12) is loaded with the lead frame (4).

9. The jig for observing the attaching state of a heat sink as claimed in claim 1,

the width of the radiating fin observation groove (5) is greater than the maximum side length of the radiating fin (3);

the length of the heat sink observation groove (5) is greater than or equal to the length of the lead frame (4).

10. The jig for observing the attaching state of a heat sink as claimed in claim 3,

the jig is characterized in that a hollow channel (13) is arranged in the side wall (2) of the jig, and the hollow channel (13) is used for the movable stop block (8) to pass through by rotating around the rotating shaft (81).

11. A method for using a jig for observing an attachment state of a heat sink, which is applied to the jig for observing an attachment state of a heat sink according to any one of claims 1 to 10, comprising the steps of:

butting the jig with a material box for placing the lead frame;

moving the lead frame from the material box to the jig along the rail clamping groove of the jig until the first end of the lead frame reaches the positioning clamping block of the jig;

rotating the movable stop block to a position vertical to the side wall of the jig to be abutted against the second end of the lead frame;

and rotating the jig by a preset angle by taking the side wall of the jig as a central shaft, and detecting the radiating fins through the radiating fin observation grooves of the jig.

12. The method of using the jig for observing the attached state of a heat sink as claimed in claim 11,

with tool and the magazine butt joint of placing the lead frame, include:

and clamping the fixture bayonet of the fixture with the material box, so that the track clamping groove is horizontally connected with the material box sheet taking groove of the material box.

13. The method of using the jig for observing the attached state of a heat sink as claimed in claim 12, wherein the jig for observing the attached state of a heat sink is a jig for measuring the attached state of a heat sink,

will the lead frame is followed in the magazine along the track draw-in groove of tool moves to in the tool, until the first end of lead frame reaches the location fixture block department of tool includes:

and translating the lead frame into the jig from the material box sheet carrying groove along the rail clamping groove until the first end of the lead frame reaches the positioning clamping block of the jig.

Technical Field

The application relates to the technical field of jigs, in particular to a jig for observing the attaching state of a radiating fin and a using method thereof.

Background

In the attaching process in the semiconductor packaging process, the radiating fin is attached to the semiconductor chip of the lead frame, and the radiating fin is heated at high temperature to enable the radiating fin resin layer to have adhesiveness, so that the radiating fin and the lead frame are pressed and attached. In the attaching process, the heat sink may be crushed and adhered with foreign substances. In traditional operation flow, the tool of observing attached product is whole solid design, can't observe the attached state of fin, leads to being in out of control state to the monitoring of fin, increases the analysis degree of difficulty of the fin unfavorable condition, and can't in time adjust the unfavorable condition, seriously influences production efficiency. Meanwhile, the risk of falling of the lead frame to the ground exists in the process of observing the attached product, and loss is caused.

In the prior art, in patent publication No. CN102765066B (light bar attaching jig and corresponding light bar attaching method), a light bar attaching jig and a corresponding light bar attaching method are proposed, in which the light bar attaching jig includes a base, a limiting member is disposed on a surface of the base, and includes a groove structure for fixing a corresponding heat sink; and the strip-shaped gasket is used for being matched with the groove structure to fix the LED lamp strip on the lamp strip fixing part of the radiating fin, so that the LED lamp strip can be conveniently attached in a linear mode.

The above prior art has the following disadvantages:

after the radiating fin is attached to the semiconductor chip on the lead frame, the radiating fin is attached to the back of the lead frame, so that the attaching state of the radiating fin cannot be observed, the difficulty in analyzing the bad conditions of the radiating fin is increased, and the product has the risk of sliding off the jig. Therefore, it is necessary to develop a jig capable of observing the attachment state of the heat sink on the lead frame.

Disclosure of Invention

For overcoming the problem that exists among the correlation technique, this application provides an observe attached state's of fin tool, this observe attached state's of fin tool can in time inspect the attached state of fin to avoid falling the ground risk of lead frame, improved product quality and production efficiency.

This application first aspect provides an observe attached state's of fin tool, includes:

the jig comprises a jig bottom plate 1 and jig side walls 2 arranged on two sides of the jig bottom plate 1 in the length direction;

the jig base plate 1 is provided with a frame placing area, the frame placing area is used for placing a lead frame 4 attached with a radiating fin 3, and the bottom of the frame placing area is provided with a radiating fin observation groove 5;

be provided with track draw-in groove 6 on tool lateral wall 2, track draw-in groove 6 is used for bearing lead frame 4, prevents that lead frame 4 from dropping when the upset.

In one embodiment, a positioning fixture block 7 and a movable stop block 8 are arranged at two ends of the frame placing area in the length direction.

In one embodiment, the jig base plate 1 is provided with a rotating shaft 81;

the movable stopper 8 is connected to the rotating shaft 81.

In one embodiment, the slot width of the rail slots 6 matches the thickness of the lead frame 4;

the track clamping groove 6 comprises a first track clamping groove and a second track clamping groove;

the first rail clamping groove and the second rail clamping groove are positioned on the same horizontal plane.

In one embodiment, the distance between the first slot bottom of the first rail slot and the second slot bottom of the second rail slot is equal to the width of the lead frame 4;

the distance between the first groove top of the first rail clamping groove and the second groove top of the second rail clamping groove is smaller than the width of the lead frame 4.

In one embodiment, a first shockproof rubber 9 is arranged in the jig side wall 2;

on the jig base plate 1, the side provided with the positioning fixture block 7 is used as the upper surface of the jig base plate, and a second shockproof rubber 10 is arranged in the lower surface of the jig base plate opposite to the upper surface of the jig base plate.

In one embodiment, the first anti-vibration rubber 9 is disposed in the jig side wall 2 and above the rail clamping groove 6;

the second anti-vibration rubber 10 is disposed on the lower surface of the bottom plate and embedded into the sidewall 2.

In one embodiment, a jig bayonet 11 is disposed along at least one side of the jig bottom plate 1 in the width direction, the jig bayonet 11 is used for being clamped with a magazine 12 storing the lead frames 4, and a magazine riding groove 121 in the magazine 12 is loaded with the lead frames 4.

In one embodiment, the width of the fin viewing slot 5 is greater than the maximum side length of the fin 3;

the length of the heat sink observing groove 5 is greater than or equal to the length of the lead frame 4.

In one embodiment, the jig side wall 2 is provided with a hollow channel 13, and the hollow channel 13 is used for the movable block 8 to pass through by rotating around the rotating shaft 81.

The application provides in a second aspect a method of using a jig for observing an attachment state of a heat sink, comprising:

butting the jig with a material box for placing the lead frame;

moving the lead frame from the material box to the jig along the rail clamping groove of the jig until the first end of the lead frame reaches the positioning clamping block of the jig;

rotating the movable stop block to a position vertical to the side wall of the jig to be abutted against the second end of the lead frame;

and rotating the jig by a preset angle by taking the side wall of the jig as a central shaft, and detecting the radiating fins through the radiating fin observation grooves of the jig.

In one embodiment, docking a jig with a magazine on which a lead frame is placed includes:

the fixture bayonet of the fixture is connected with the material box in a clamped mode, so that the track clamping groove is horizontally connected with the material box sheet taking groove of the material box.

In an embodiment, move the lead frame from the magazine to the tool along the track draw-in groove of tool in, until the first end of lead frame reaches the location fixture block department of tool, include:

and translating the lead frame from the material box sheet taking groove to the jig along the track clamping groove until the first end of the lead frame reaches the positioning clamping block of the jig.

The technical scheme provided by the application can comprise the following beneficial effects:

in the embodiment of the application, when the lead frame passes through the rail clamping groove on the jig side wall, place the frame of tool bottom plate and place the district after, can place the jig upset of lead frame (because the bearing of rail clamping groove, the lead frame can not drop when the upset), place the fin observation groove of the bottom in district through the frame, look over the attached state of fin on the lead frame, in time inspect and adjust the bad fin of attached state, and reduced the risk of falling to the ground of lead frame, improve product quality and production efficiency.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.

Fig. 1 is a schematic front-side overall structure diagram of a jig for observing an attached state of a heat sink of an assembled lead frame according to an embodiment of the present application;

fig. 2 is a schematic front overall structure diagram of a jig for observing an attached state of a heat sink of an unassembled lead frame according to an embodiment of the present application;

fig. 3 is a schematic back structure diagram of a jig for observing an attaching state of a heat sink according to an embodiment of the present application;

fig. 4 is a first partial structural schematic diagram of a jig for observing an attached state of a heat sink according to an embodiment of the present application;

fig. 5 is a second partial structural schematic view of a jig for observing an attaching state of a heat sink according to an embodiment of the present application;

fig. 6 is a schematic structural view of a jig for observing an attaching state of a heat sink according to an embodiment of the present disclosure after being abutted to a material box;

fig. 7 is a third partial structural schematic view of a jig for observing an attaching state of a heat sink according to an embodiment of the present application;

fig. 8 is a schematic structural view of a movable stop of a jig for observing an attaching state of a heat sink according to an embodiment of the present disclosure;

fig. 9 is a first flowchart illustrating a method of using a jig for observing an attaching state of a heat sink according to an embodiment of the present application;

fig. 10 is a second flowchart illustrating a method for using the jig for observing the attached state of the heat sink according to the embodiment of the present application.

Detailed Description

Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Example one

The attached process in the semiconductor packaging process is to attach the radiating fin on the semiconductor chip of the lead frame, and in the attaching process, the radiating fin can have the conditions of pressure injury and adhesion foreign matters, if the adverse conditions can not be adjusted in time, the production efficiency and the production quality can be seriously influenced, and meanwhile, the risk that the lead frame falls to the ground exists in the process of observing attached products, so that the loss is caused. In the prior art, a lamp strip attaching jig and a corresponding lamp strip attaching method are provided, so that the linear attachment of an LED lamp strip can be conveniently realized. However, the above prior art has disadvantages that after the heat sink is attached to the semiconductor chip on the lead frame, the attachment state of the heat sink cannot be observed because the heat sink is attached to the back of the lead frame, the difficulty in analyzing the adverse conditions of the heat sink is increased, and the product has a risk of falling off the ground on the jig. Therefore, it is necessary to develop a jig capable of observing the attachment state of the heat sink on the lead frame.

To solve the above problem, the embodiment of the application provides a jig for observing the attaching state of a heat dissipation fin, which can check the attaching state of the heat dissipation fin in time, avoid the risk of falling of a lead frame, and improve the product quality and the production efficiency.

The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 3, an embodiment of a jig for observing an attached state of a heat sink according to the embodiment of the present application includes:

the jig comprises a jig bottom plate 1 and jig side walls 2 arranged on two sides of the jig bottom plate 1 in the length direction.

The jig base plate 1 is provided with a frame placing area, the frame placing area is used for placing a lead frame 4 attached with a radiating fin 3, and the bottom of the frame placing area is provided with a radiating fin observation groove 5; be provided with track draw-in groove 6 on tool lateral wall 2, track draw-in groove 6 is used for preventing that lead frame 4 from dropping when the upset.

It can be understood that, in practical application, the state of each structure in the lead frame 4 is checked by placing the lead frame 4 in the frame placing area, because if the lead frame 4 is taken up by hand alone, the fragile bonding wires inside the lead frame 4 are easily broken, after the jig is turned over, the attaching effect of the heat sink 3 attached to the back surface of the semiconductor chip can be observed through the heat sink observing groove 5, and the lead frame does not fall to the ground after being turned over due to the supporting effect of the rail clamping groove 6.

The following beneficial effects can be seen from the first embodiment:

in the embodiment of the application, when the lead frame passes through the rail clamping groove on the jig side wall, place the frame of tool bottom plate and place the district after, can place the jig upset of lead frame (because the bearing of rail clamping groove, the lead frame can not drop when the upset), place the fin observation groove of the bottom in district through the frame, look over the attached state of fin on the lead frame, in time inspect and adjust the bad fin of attached state, and reduced the risk of falling to the ground of lead frame, improve product quality and production efficiency.

Example two

In practical application, a positioning fixture block and a movable stop block are arranged on a bottom plate of the jig, so that the stability and the positioning accuracy of a lead frame during detection are improved by matching with a rail clamping groove, shockproof rubber is added, vibration generated during operation is reduced, and the risk of wire breakage of a welding wire is reduced.

Referring to fig. 1 to 8, an embodiment of a jig for observing an attached state of a heat sink according to the embodiment of the present application includes:

and two ends of the frame placing area in the length direction are provided with a positioning clamping block 7 and a movable clamping block 8.

In this embodiment of the application, a rotating shaft 81 may be disposed on the jig base plate 1, the movable stopper 8 is connected to the rotating shaft 81 to realize the movable capability of the movable stopper 8, and the movable track of the movable stopper 8 may not pass through the jig base plate 1, or may pass through the jig base plate 1, and needs to be selected according to the actual application situation, which is not limited herein. If the movable track of the movable stop block 8 passes through the jig bottom plate 1, the movement plane of the movable stop block 8 is perpendicular to the jig bottom plate 1; if the activity orbit of movable stop dog 8 does not pass tool bottom plate 1, then movable stop dog 8's motion plane is on a parallel with tool bottom plate 1, can be equipped with fretwork passageway 13 in tool lateral wall 2, fretwork passageway 13 is used for movable stop dog 8 to pass through when using axis of rotation 81 to rotate as the center, after lead frame 4 passes through track draw-in groove 6 and arrives positioning fixture block 7, movable stop dog 8 uses axis of rotation 81 to rotate to perpendicular to tool lateral wall 2's position and lead frame butt as the center, then can cooperate positioning fixture block 7 to produce the firm effect of lead frame 4 on the horizontal direction.

In order to enable the rail clamping grooves to support the lead frame 4, the width of the rail clamping grooves 6 is matched with the thickness of the lead frame 4, so that the lead frame 4 can smoothly enter the rail clamping grooves 6 and move along the rail clamping grooves 6, generally, the width of the rail clamping grooves 6 is set to be slightly larger than the thickness of the lead frame 4, in practical application, for example, the difference between the width of the rail clamping grooves 6 and the thickness of the lead frame 4 can be a value larger than 0 and smaller than 1mm, and the difference needs to be set according to practical application conditions, and the difference is not limited uniquely here.

Because track draw-in groove 6 all has the setting on two lateral walls, consequently can divide into first track draw-in groove and second track draw-in groove, first track draw-in groove and second track draw-in groove are in same horizontal plane, avoid lead frame 4 to produce deformation or the unsmooth condition when getting into first track draw-in groove and second track draw-in groove simultaneously. The distance between the first tank bottom of the first rail clamping groove and the second tank bottom of the second rail clamping groove is equal to the width of the lead frame 4, so that the lead frame 4 can just enter the space between the first rail clamping groove and the second rail clamping groove, and the stability is improved. The distance between the first groove top of the first rail clamping groove and the second groove top of the second rail clamping groove is smaller than the width of the lead frame, in the embodiment of the application, the groove top refers to the top of the groove wall of the rail clamping groove 6, and the distance between the first groove top and the second groove top is smaller than the width of the lead frame, so that the groove wall of the rail clamping groove 6 is coincided with a part of surface of the lead frame 4 in the length direction, the groove wall of the rail clamping groove 6 supports the lead frame 4, and the lead frame 4 is prevented from falling in the vertical direction.

In the embodiment of the present application, in order to reduce the vibration generated during the detection, the first anti-vibration rubber 9 is disposed in the side wall 2 of the jig, and the first anti-vibration rubber 9 is located above the rail slot 6 on the jig bottom plate 1, and in addition, the side provided with the positioning fixture block 7 is used as the upper surface of the jig bottom plate, and the second anti-vibration rubber 10 is disposed in the lower surface of the jig bottom plate opposite to the upper surface of the jig bottom plate and embedded into the side wall 2 of the jig, so as to reduce the risk of wire breakage during the detection operation.

In the embodiment of the application, in order to improve the fluency that lead frame 4 gets into track draw-in groove 6, at least one side along the width direction of tool bottom plate 1 sets up tool bayonet 11, tool bayonet 11 is used for joint magazine 12, magazine in magazine 12 is taken advantage of piece groove 121 and is loaded with lead frame 4, make magazine take advantage of piece groove 121 and track draw-in groove 6 on same water flat line, be the horizontality, thereby under the stable circumstances of tool bayonet 11 and magazine 12 joint, make magazine take advantage of piece groove 121 and track draw-in groove 6 can stably dock, lead frame 4 can be smoothly along track draw-in groove 6 arrival frame placement area.

In the embodiment of the present application, in order to observe the attaching effect of the heat sink to the maximum, the width of the heat sink observing groove 5 is greater than the maximum side length of the heat sink 3, and for example, if the maximum side length of the heat sink 3 is 13mm, the width of the heat sink observing groove 5 may be set to 13.8 mm; the length of the heat sink observing groove 5 is greater than or equal to the length of the lead frame 4, for example, if 5 groups of semiconductor chips are arranged in one lead frame 4, and the total length is 270mm, the length of the heat sink observing groove 5 may be set to 270mm or 275mm, so that all the heat sinks are displayed in a visual range through the heat sink observing groove 5, and the detection effect is improved.

The following advantageous effects can be seen from the second embodiment:

the fixture base plate is provided with the positioning fixture block and the movable stop block, and the lead frame is fixed by matching with the rail clamping groove, so that the stability and the positioning accuracy of the lead frame after being overturned during detection are improved; the first shockproof rubber and the second shockproof rubber are added, so that the shock generated during detection and turnover is reduced, and the risk of wire breakage of the welding wire is reduced; the smoothness and stability of the lead frame entering the track clamping groove are improved through clamping of the clamping opening of the jig and the material box; after the jig for placing the lead frame is turned over when detecting, the attached state of the detected radiating fins is fully observed through the radiating fin observation groove 5, the radiating fins in the attached state are inspected and adjusted in time, the ground falling risk of the lead frame is reduced, the product quality and the production efficiency are improved, and meanwhile, the risk of damaging the lead frame in the detection process is improved, and the detection stability is improved.

EXAMPLE III

Corresponding to the application structure embodiment, the application also provides a use method of the jig for observing the attaching state of the radiating fin and a corresponding embodiment.

Fig. 9 is a first flowchart illustrating a method for using a jig for observing a heat sink attachment state according to an embodiment of the present application.

Referring to fig. 9, a third embodiment of the method for using the jig for observing the attached state of the heat sink in the embodiment of the present application includes:

901. butting the jig with a material box for placing the lead frame;

when quality detection is carried out on the attached state of the radiating fin, the material box with the placed lead frame can be placed on the detection table, the taking jig is in butt joint with the material box, and the jig is in a horizontal state.

In the embodiment of the present application, the lead frame is used as a chip carrier of an integrated circuit, and is a key structural member for forming an electrical circuit by electrically connecting a circuit lead-out terminal inside a chip with an external lead via a bonding material, and plays a role of a bridge connected with an external wire.

902. Moving the lead frame from the material box to the jig along the rail clamping groove of the jig;

move the lead frame to the tool along the track draw-in groove of tool in from the magazine, in practical application, can use to press from both sides and get tweezers and remove the lead frame gently for the lead frame runs through in the track draw-in groove, reaches the location fixture block department of tool until the first end of lead frame, accomplishes the location of lead frame.

In the embodiment of the present application, the first end of the lead frame refers to the end of the lead frame that enters the rail card slot first.

903. Rotating the movable stop block to a position vertical to the side wall of the jig to be abutted against the second end of the lead frame;

in this application embodiment, the plane of motion of movable stop is on a parallel with the tool bottom plate, and movable stop is rotatory to perpendicular to tool lateral wall and with the second end butt of lead frame to the direction that the lead frame placed the region, and the second end of lead frame means the one end that gets into the rail clamping groove at last relative with the first end of lead frame.

904. The jig is rotated by a predetermined angle using the side wall of the jig as a central axis.

Use the tool lateral wall to detect the fin as the rotatory preset angle of tool as the center pin, the fin observation groove through the tool, exemplary, preset the angle and can set up the angle value between 90 to 180, can understand, in practical application, can carry out reasonable setting to presetting the angle according to the practical application condition, the purpose is for better detection effect, does not do only the injecing here.

After the overturning, the distance between the lead frame and the surface of the detection table is large, the lead frame can not contact the surface of the detection table, the state of the radiating fin is observed, and the correction can be found in time after the poor condition occurs.

The following beneficial effects can be seen from the third embodiment:

through docking the jig with the magazine, move the lead frame to the jig along the track draw-in groove of jig in to reach the positioning fixture block and accomplish the location, rotatory to the jig upset that will place the lead frame after with the lead frame butt of activity dog, the fin observation groove through the jig detects the fin, look over the attached state of fin on the lead frame, in time inspect and adjust the bad fin of attached state, and reduced the risk of falling to the ground of lead frame, improve product quality and production efficiency.

Example four

In order to improve the smoothness and stability of the process of transferring the lead frame from the magazine to the jig, the jig and the magazine are clamped by the jig clamping opening to increase the stability.

Fig. 10 is a first flowchart illustrating a method for using a jig for observing an attaching state of a heat sink according to an embodiment of the present application.

Referring to fig. 10, a fourth embodiment of the method for using the jig for observing the attachment state of the heat sink in the embodiment of the present application includes:

1001. clamping a fixture bayonet of the fixture with the material box;

the purpose of clamping the fixture bayonet of the fixture and the material box is to increase the relative stability between the fixture and the material box, prevent the lead frame from being damaged by the lead frame caused by the relative motion between the fixture and the material box in the moving process, and meanwhile, when the clamping is completed, the track clamping groove is horizontally connected with the material box sheet taking groove of the material box, and the material box sheet taking groove bears the lead frame.

In the embodiment of the application, the edge position of the magazine is provided with the clamping groove adapted to the clamping opening of the jig, and when the clamping opening of the jig is clamped into the clamping groove, a locking acting force is generated, so that the jig can be fixed on the edge of the magazine.

1002. And moving the lead frame into the jig from the material box along the rail clamping groove of the jig.

And translating the lead frame from the material box sheet taking groove to the jig along the track clamping groove until the first end of the lead frame reaches the positioning clamping block of the jig.

The following beneficial effects can be seen from the fourth embodiment:

accomplish the joint through tool bayonet socket and magazine and make tool and magazine relatively stable to the track draw-in groove is taken advantage of the piece groove level with the magazine of magazine and is linked up, takes advantage of the piece groove translation to the tool along the track from the magazine with the magazine until the first end of lead frame reaches the location fixture block department of tool, has improved the smooth degree and the stability that the lead frame removed among the tool, reduces the risk that the lead frame damaged in the transfer process.

The aspects of the present application have been described in detail hereinabove with reference to the accompanying drawings. In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. Those skilled in the art should also appreciate that the acts and modules referred to in the specification are not necessarily required in the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application may be sequentially adjusted, combined, and deleted according to actual needs, and the modules in the device of the embodiment of the present application may be combined, divided, and deleted according to actual needs.

Furthermore, the method according to the present application may also be implemented as a computer program or computer program product comprising computer program code instructions for performing some or all of the steps of the above-described method of the present application.

Alternatively, the present application may also be embodied as a non-transitory machine-readable storage medium (or computer-readable storage medium, or machine-readable storage medium) having stored thereon executable code (or a computer program, or computer instruction code) which, when executed by a processor of an electronic device (or electronic device, server, etc.), causes the processor to perform part or all of the various steps of the above-described method according to the present application.

Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the applications disclosed herein may be implemented as electronic hardware, computer software, or combinations of both.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems and methods according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.