CN217669000U - Positioning tool for core sticking of lead frame - Google Patents
Positioning tool for core sticking of lead frame Download PDFInfo
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- CN217669000U CN217669000U CN202221880296.7U CN202221880296U CN217669000U CN 217669000 U CN217669000 U CN 217669000U CN 202221880296 U CN202221880296 U CN 202221880296U CN 217669000 U CN217669000 U CN 217669000U
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- positioning
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Abstract
A positioning tool for a lead frame core bonding comprises a substrate, a driving mechanism arranged at the lower end of the substrate and a pair of positioning mechanisms connected to two ends of the driving mechanism; the positioning mechanism comprises a concave guide piece arranged on the side wall of a substrate, a positioning connecting plate is arranged in the concave guide piece in a penetrating mode, a positioning upper plate is arranged at the upper end of the positioning connecting plate, a plurality of positioning rods are arranged on the positioning upper plate, an extending convex plate is arranged on the outer wall of the positioning connecting plate and provided with a telescopic rod, a spring is sleeved on the upper end of the telescopic rod, a round-head guide plate is sleeved on the telescopic rod, the inner side end of the round-head guide plate is arranged on the concave guide piece, the concave guide piece is located at the lower end of the spring, a stress plate is arranged on the inner wall of the lower end of the positioning connecting plate, when the lead frame is positioned, two ends of the driving mechanism act on the stress plate, the positioning rods move downwards, and the lead frame is positioned and clamped through the positioning upper plate. The scheme can realize stable clamping and accurate positioning of the lead frame so as to improve the quality of the adhesive core.
Description
Technical Field
The utility model relates to an electronic components processing correlation technique field especially relates to a lead frame glues core and uses location frock.
Background
The conventional electronic component generally comprises a chip, a package housing and pins, wherein when the electronic component is processed, the chip is fixed on a pre-processed lead frame base island by a solder paste curing mode, then the chip is packaged by a curing adhesive, and finally the processing of the electronic component is completed.
When the chip is bonded, the lead frame is usually transferred to a solder paste spot coating position through a conveying device, then the solder paste spot coating is carried out, then the lead frame is transferred to a chip bonding position, the chip bonding operation is carried out, when the chip is bonded, in order to ensure the accuracy of the chip bonding, the chip needs to be clamped and fixed, the existing clamping usually adopts a cylinder clamping mode to clamp the lead frame, and due to the characteristics of the position and the appearance structure of the lead frame, a cylinder used for clamping is small, and in long-term use, the cylinder is found to be easily damaged and is inconvenient to replace, so that certain influence is caused on the chip bonding operation.
SUMMERY OF THE UTILITY MODEL
The utility model provides a lead frame glues core with location frock to solve above-mentioned prior art not enough, when carrying out the chip adhesion, carry out the centre gripping of lead frame through motor drive's mode, and the centre gripping stability is strong, can pinpoint the lead frame after the centre gripping simultaneously, thereby improved the precision of chip adhesion.
In order to realize the purpose of the utility model, the following technologies are adopted:
a positioning tool for a lead frame core bonding comprises a substrate, a driving mechanism arranged at the lower end of the substrate and a pair of positioning mechanisms connected to two ends of the driving mechanism;
the driving mechanism is used for driving the positioning mechanism to position the lead frame plate;
the positioning mechanism comprises a concave guide piece arranged on the side wall of a substrate, a positioning connecting plate is penetrated in the concave guide piece, a positioning upper plate is arranged at the upper end of the positioning connecting plate, a plurality of positioning rods are arranged on the positioning upper plate in a downward extending mode, an extending convex plate is arranged at the upper end of the outer wall of the positioning connecting plate, a telescopic rod is arranged on the extending convex plate in a downward extending mode, a spring is sleeved on the upper end of the telescopic rod, a round-head guide plate is sleeved on the telescopic rod, the inner side end of the round-head guide plate is arranged on the concave guide piece, the concave guide piece is located at the lower end of the spring, a stress plate is arranged on the inner wall of the lower end of the positioning connecting plate, when the lead frame is positioned, two ends of the driving mechanism act on the stress plate, the positioning rods move downwards, and the lead frame is positioned and clamped through the positioning upper plate.
Furthermore, the driving mechanism comprises a downward-extending side plate arranged on the base plate, a pair of driving bearing seats are arranged on the inner wall of the downward-extending side plate, a driving worm is arranged between the driving bearing seats, the driving worm is meshed with a worm wheel, the worm wheel is concentrically provided with a rotating shaft, rotating bearing seats are arranged at two ends of the rotating shaft, the rotating bearing seats are arranged on the base plate, eccentric wheels are eccentrically arranged at two ends of the rotating shaft, and the far ends of the eccentric wheels act on the upper end of the stress plate to enable the positioning upper plate to move downwards.
Furthermore, the upper end of the stress plate is of an arc-shaped structure protruding outwards.
Furthermore, the positioning rods are arranged on the positioning upper plate in an equally spaced array.
The technical scheme has the advantages that:
when chip adhesion is carried out, the lead frame is clamped in a motor-driven mode, clamping stability is high, the lead frame can be accurately positioned after clamping, and therefore chip adhesion accuracy is improved. Wherein actuating mechanism carries out the centre gripping through worm and worm gear drive's mode drive positioning mechanism to the lead frame to improved the stability of lead frame centre gripping, still adopted the mode of cam centre gripping when the centre gripping, conveniently carried out the centre gripping and cancelled the state of centre gripping and switch, and spare part wherein conveniently changes and maintains, has stronger practicality.
Drawings
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 shows a perspective view of a first embodiment.
Fig. 2 shows a perspective view of the second embodiment.
Detailed Description
As shown in fig. 1 to 2, a positioning tool for core bonding of a lead frame includes a substrate 1, a driving mechanism 2 disposed at a lower end of the substrate 1, and a pair of positioning mechanisms 3 connected to two ends of the driving mechanism 2. The driving mechanism 2 is used for driving the positioning mechanism 3 to position the lead frame plate. When clamping the lead frame, the lead frame is transferred to the substrate 1 through the conveying device, and then the lead frame is clamped by the positioning mechanism 3 under the driving of the driving mechanism 2.
The positioning mechanism 3 comprises a concave guide part 30 mounted on the side wall of the base plate 1, a positioning connecting plate 31 penetrates through the concave guide part 30, a positioning upper plate 33 is arranged at the upper end of the positioning connecting plate 31, a plurality of positioning rods 34 are arranged on the positioning upper plate 33 in a downward extending mode, an extending convex plate 35 is arranged at the upper end of the outer wall of the positioning connecting plate 31, an extending rod 36 is arranged on the extending convex plate 35 in a downward extending mode, a spring 38 is sleeved on the upper end of the extending rod 36, a round head guide plate 37 is sleeved on the extending rod 36, the inner end of the round head guide plate 37 is mounted on the concave guide part 30, the concave guide part 30 is located at the lower end of the spring 38, a stress plate 32 is arranged on the inner wall of the lower end of the positioning connecting plate 31, when the lead frame is positioned, two ends of the driving mechanism 2 act on the stress plate 32, the positioning rods 34 move downwards, and the lead frame is positioned and clamped through the positioning upper plate 33. The upper end of the stress plate 32 is of an arc structure protruding outwards. The positioning rods 34 are arranged on the positioning upper plate 33 in an equally spaced array.
Wherein the positioning upper plate 33, when moving downwards, will clamp the lead frame by its lower wall.
The positioning rods 34 are inserted into the positioning holes on the two sides of the lead frame, so that the lead frame can be accurately positioned, and the accuracy in core sticking is ensured.
Among them, the provision of the spring 38 enables the positioning upper plate 33 to move upward when the clamping is cancelled, thereby facilitating the switching of the clamping mode.
Wherein, set up the upper end of atress board 32 into the arc structure, conveniently act on the upper end of atress board 32 through actuating mechanism 2 to the centre gripping operation of lead frame is conveniently carried out.
The driving mechanism 2 comprises a downward extending side plate 20 arranged on the base plate 1, a pair of driving bearing seats 21 are arranged on the inner wall of the downward extending side plate 20, a driving worm 23 is arranged between the driving bearing seats 21, the lower end of the driving worm 23 is connected with a clamping motor 22, the driving worm 23 is meshed with a worm wheel 24, the worm wheel 24 is concentrically provided with a rotating shaft 25, two ends of the rotating shaft 25 are provided with rotating bearing seats 26, the rotating bearing seats 26 are arranged on the base plate 1, two ends of the rotating shaft 25 are eccentrically provided with eccentric wheels 27, and the far ends of the eccentric wheels 27 act on the upper end of a stress plate 32 to enable the positioning upper plate 33 to move downwards.
The driving mechanism 2 adopts a worm 23 and worm wheel 24 transmission mode, so that the stability of lead frame clamping is ensured.
When the positioning upper plate 33 is driven to move downwards in the driving mechanism 2, the eccentric arrangement mode of the eccentric wheel 27 is adopted, when the far end of the eccentric wheel 27 acts on the stress plate 32, the positioning upper plate 33 moves downwards, and when the near end of the eccentric wheel 27 acts on the stress plate 32, the positioning upper plate 33 is arranged on the spring 38, so that the lead frame clamping mode is convenient to switch.
When clamping is performed, the driving motor 22 drives the two eccentric wheels 27 to perform eccentric rotation through the driving worm 23 and the worm wheel 24, so that the farthest end of the eccentric wheel 27 acts on the stress plate 32, the positioning connecting plate 31 moves downwards under the driving of the eccentric wheel 27, the movement of the positioning connecting plate 31 drives the positioning upper plate 33 to move downwards, the clamping operation on the lead frame is completed under the driving of the positioning upper plate 33, and the spring 38 is compressed at this time to prepare for subsequent cancellation of clamping.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is obvious that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (4)
1. A positioning tool for a lead frame core bonding is characterized by comprising a substrate (1), a driving mechanism (2) arranged at the lower end of the substrate (1) and a pair of positioning mechanisms (3) connected to two ends of the driving mechanism (2);
the driving mechanism (2) is used for driving the positioning mechanism (3) to position the lead frame plate;
the positioning mechanism (3) comprises a concave guide piece (30) arranged on the side wall of the base plate (1), a positioning connecting plate (31) penetrates through the concave guide piece (30), a positioning upper plate (33) is arranged at the upper end of the positioning connecting plate (31), a plurality of positioning rods (34) are arranged on the positioning upper plate (33) in a downward extending mode, an overhanging convex plate (35) is arranged at the upper end of the outer wall of the positioning connecting plate (31), a telescopic rod (36) is arranged on the overhanging convex plate (35) in a downward extending mode, a spring (38) is sleeved at the upper end of the telescopic rod (36), a round head guide plate (37) is sleeved on the telescopic rod (36), the inner side end of the round head guide plate (37) is arranged on the concave guide piece (30), the concave guide piece (30) is located at the lower end of the spring (38), a stress plate (32) is arranged on the inner wall of the lower end of the positioning connecting plate (31), when the lead frame is positioned, two ends of the driving mechanism (2) act on the stress plate (32), the positioning connecting plate (34) and the lead frame is moved downwards, and the positioning clamping is carried out positioning on the lead frame through the positioning upper plate (33).
2. The lead frame gluing positioning tool according to claim 1, wherein the driving mechanism (2) comprises a downward extending side plate (20) installed on the base plate (1), a pair of driving bearing seats (21) are installed on the inner wall of the downward extending side plate (20), a driving worm (23) is arranged between the driving bearing seats (21), a worm wheel (24) is meshed with the driving worm (23), a rotating shaft (25) is concentrically arranged on the worm wheel (24), rotating bearing seats (26) are arranged at two ends of the rotating shaft (25), the rotating bearing seats (26) are both installed on the base plate (1), eccentric wheels (27) are eccentrically arranged at two ends of the rotating shaft (25), and the far ends of the eccentric wheels (27) act on the upper end of the stress plate (32) to enable the positioning upper plate (33) to move downwards.
3. The lead frame gluing positioning tool as claimed in claim 1, wherein the upper end of the stress plate (32) is of an arc structure protruding outwards.
4. The lead frame core bonding positioning tool according to claim 1, wherein the positioning rods (34) are arranged on the positioning upper plate (33) in an equally spaced array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221880296.7U CN217669000U (en) | 2022-07-21 | 2022-07-21 | Positioning tool for core sticking of lead frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221880296.7U CN217669000U (en) | 2022-07-21 | 2022-07-21 | Positioning tool for core sticking of lead frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217669000U true CN217669000U (en) | 2022-10-28 |
Family
ID=83717298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221880296.7U Active CN217669000U (en) | 2022-07-21 | 2022-07-21 | Positioning tool for core sticking of lead frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217669000U (en) |
-
2022
- 2022-07-21 CN CN202221880296.7U patent/CN217669000U/en active Active
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