CN209766380U - Practical forming mechanism for TO-263 device - Google Patents

Abstract

The utility model discloses a practical forming mechanism of TO-263 device, including the lower bolster, be equipped with the lockhole on the lower bolster, the upper end of lower bolster is equipped with down the shaping piece, the upper end of lower bolster is equipped with the guide pillar, be connected with the cope match-plate pattern through the guide pin bushing sliding on the guide pillar, cup jointed supporting spring on the guide pillar, the lower extreme of cope match-plate pattern is equipped with upper shaping piece and last spacing piece, the lower extreme of cope match-plate pattern is equipped with equal height post, slide and cup joint the slider on equal height post, the lower extreme of slider is equipped with return spring, return spring slides and cup joints on equal height post, the structural design is simple, practical, guarantee size and precision after the shaping, upper spacing piece and lower shaping piece cooperate, make body, pin avoid mechanical damage; the operation is diversified, both can manual operation use, also can form a complete set and use on automatic die-cut equipment, and this structure production efficiency is high, and the dismouting is maintained simply, has guaranteed the shaping yields, suitable extensive using widely.

Description

Practical forming mechanism for TO-263 device

Technical Field

The utility model relates TO a practical forming mechanism technical field specifically is a TO-263 device is at the forming mechanism before subsides dress uses.

Background

The TO-263 package is one of the forms of surface mount devices, and a middle drain pin is cut off and is not used when the surface mount device is applied after the surface mount device is packaged, but a radiating fin on the back is used as a drain, and the radiating fin is directly mounted and welded on a PCB (printed circuit board), so that the TO-263 package is used for outputting large current and radiates heat through the PCB. Therefore, in the TO-263 production process, after the body is molded and plated, the middle pin of the TO-263 device is removed and the other two pins are bent on a forming machine TO be formed through a forming process before the body is sealed and packaged, but the practical forming mechanism of the TO-263 device in the prior art has the following defects.

At present, a plurality of forming modes are adopted, such as manual jig forming, air pressure forming, clamping jaw type forming and the like, and the manual forming is slow and time-consuming; the air pressure forming is not stable enough, the forming speed can be ensured by the forming of the clamping jaw, but the material consumption cost is high, and the air pressure forming device can only be used on turret equipment; therefore, the utility model provides a but the forming mechanism of manual operation compatible use on automatic equipment again, solves the shaping problem of present TO-263 encapsulation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is TO provide a practical forming mechanism structure of TO-263 encapsulation form TO solve the inconvenient problem of TO-263 encapsulation shaping.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a TO-263 device practical forming mechanism, includes the lower bolster, be equipped with the lockhole on the lower bolster, the upper end of lower bolster is equipped with down the shaping piece, the upper end of lower bolster is equipped with the guide pillar, there is the cope match-plate pattern through guide pin bushing sliding connection on the guide pillar, supporting spring has been cup jointed on the guide pillar, the lower extreme of cope match-plate pattern is equipped with shaping piece and last spacing piece, the lower extreme of cope match-plate pattern is equipped with high post, slide and cup joint the slider on high post.

Preferably, the lower end of the sliding block is provided with a return spring, the return spring is sleeved on the equal-height column in a sliding mode, the lower end of the return spring is provided with an upper pressing block, and the upper pressing block is connected to the outer surface of the equal-height column in a sliding mode.

Preferably, the lower shaping block and the upper pressing block are provided with grooves.

Preferably, a cavity is formed in the inner side of the upper shaping block, a U-shaped push handle is connected in the cavity in a sliding mode, the U-shaped push handle penetrates through the upper template to be in contact connection with the sliding block, and a rotating groove is formed in the U-shaped push handle.

Preferably, the rotating groove is connected with a rotating block in a rotating mode, a threaded rod is arranged at the upper end of the rotating block, and the threaded rod penetrates through the U-shaped push handle to be in threaded connection with the upper template.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the structure is simple and practical in design, the size and the precision after molding are ensured, and the upper limiting block is matched with the lower shaping block, so that the body and the pins are prevented from being mechanically damaged; the operation is diversified, and the punching die can be manually operated and used or can be matched with automatic punching equipment for use.

2. The structure has high production efficiency and simple disassembly, assembly and maintenance, ensures the molding yield and is suitable for wide popularization and use.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

Fig. 2 is a cross-sectional view of the present invention;

Fig. 3 is an enlarged view of the position a of the present invention.

In the figure: 1 lower template, 11 lock holes, 2 lower shaping blocks, 3 guide pillars, 31 supporting springs, 4 guide sleeves, 5 upper templates, 51 slide blocks, 52 cavities, 53U-shaped push handles, 54 rotary grooves, 55 rotary blocks, 56 threaded rods, 6 upper shaping blocks, 7 upper limiting blocks, 8 equal height pillars, 9 return springs and 10 upper pressing blocks.

Detailed Description

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: the utility model provides a TO-263 device utility forming mechanism, including lower bolster 1, be equipped with lockhole 11 on the lower bolster 1, the upper end of lower bolster 1 is equipped with down integer 2, the upper end of lower bolster 1 is equipped with guide pillar 3, two guide pillar 3 symmetries set up, install on lower bolster 1, be equipped with guide pin bushing 4 and inlay in cope match-plate pattern 5 outside guide pillar 3, it is accurate TO guarantee displacement when cope match-plate pattern 5 and lower bolster 1 coincidence shaping, guarantee the qualification of shaping size, there is cope match-plate pattern 5 through guide pin bushing 4 sliding connection on the guide pillar 3, cup jointed supporting spring 31 on the guide pillar 3, the lower extreme at cope match-plate pattern 5 is fixed TO the upper end of supporting spring 31, the lower extreme at lower bolster 1 is fixed TO the lower extreme of supporting spring 31, the lower extreme of cope match-plate pattern 5 is equipped with integer 6 and last stopper 7, the lower extreme of cope match-plate pattern 5 is.

Referring to fig. 1, a return spring 9 is arranged at the lower end of a slider 51, the return spring 9 is slidably sleeved on an equal-height column 8, an upper pressing block 10 is arranged at the lower end of the return spring 9, the upper pressing block 10 is slidably connected to the outer surface of the equal-height column 8, an upper pressing block 10 and an upper shaping block 6 are assembled on an upper template 5, the upper pressing block 10 contacts with a piece to be formed firstly when the upper template 5 is pressed downwards, when the upper pressing block is displaced to the limit height of the equal-height column 8, under the limit pressure of the return spring 9, a head radiating fin and a root pin bending area of the formed piece are pressed tightly, the upper shaping block 6 moves downwards continuously along with the pressing block and is matched with a lower shaping block 2 to form a flat pin into a Z shape, so that.

Referring to fig. 1 and 2, grooves are formed in the lower shaping block 2 and the upper pressing block 10, in the whole forming process, the upper pressing block 10 and the lower shaping block 2 form a rectangular cavity to protect the plastic package body, the front pressing knife and the rear pressing knife of the upper pressing block 10 respectively press the head portion and the bent root portion of the radiating fin, and the shaping and pressing are guaranteed not to be affected by mechanical stress during forming after being compressed.

Referring to fig. 2, a cavity 52 is formed inside the upper shaping block 6, a U-shaped push handle 53 is slidably connected in the cavity 52, the U-shaped push handle 53 penetrates through the upper mold plate 5 to be in contact connection with the slide block 51, the slide block 51 can be pushed downwards by the U-shaped push handle 53 to facilitate adjustment of the use position of the contour column 8, and a rotary groove 54 is formed in the U-shaped push handle 53.

Referring to fig. 2, a rotating block 55 is rotatably connected in the rotating slot 54, the rotating block 55 is convenient to rotate in the rotating slot 54, a threaded rod 56 is arranged at the upper end of the rotating block 55, and the threaded rod 56 penetrates through the U-shaped push handle 53 to be in threaded connection with the upper template 5.

The utility model discloses when concrete implementation: when the plastic package forming device is used, the upper pressing block 10 and the upper shaping block 6 are assembled on the upper template 5, when the upper template 5 is pressed downwards, the upper pressing block 10 is firstly contacted with a piece to be formed, at the moment, the upper template 5 slides on the guide post 3 through the guide sleeve 4 to compress the supporting spring 31, when the upper template moves to the limit height of the equal-height post 8, under the limit pressure of the return spring 9, the head radiating fin and the bending area of the root pin of the formed piece are pressed tightly, the upper shaping block 6 continuously moves downwards and is matched with the lower shaping block 2 to form the flat pin into a Z shape, so that the pin and the radiating fin are formed on the same plane, the requirement of surface mounting is met, in the whole forming process, the upper pressing block 10 and the lower shaping block 2 form a rectangular cavity to protect the plastic package body, the front and rear pressing knives of the upper pressing block 10 respectively press the head and the bending root of the radiating fin, the shaping press downwards without the influence, the threaded rod 56 is directly rotated to enable the rotating block 55 to rotate in the rotating groove 54 and meanwhile the U-shaped push handle 53 is pushed downwards, so that the U-shaped push handle 53 pushes the sliding block 51 to slide on the contour column 8, the use length of the contour column 8 is reduced, and the purpose of adjusting the effective length of the contour column 8 is achieved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a TO-263 device utility forming mechanism, includes lower bolster (1), its characterized in that: the improved die is characterized in that a lock hole (11) is formed in the lower template (1), a lower shaping block (2) is arranged at the upper end of the lower template (1), a guide pillar (3) is arranged at the upper end of the lower template (1), an upper template (5) is connected to the guide pillar (3) in a sliding mode through a guide sleeve (4), a supporting spring (31) is sleeved on the guide pillar (3), an upper shaping block (6) and an upper limiting block (7) are arranged at the lower end of the upper template (5), an equal-height column (8) is arranged at the lower end of the upper template (5), and a sliding block (51) is sleeved on the equal-height column (8) in a sliding mode.

2. A TO-263 device utility molding mechanism as claimed in claim 1, wherein: the lower end of the sliding block (51) is provided with a return spring (9), the return spring (9) is sleeved on the equal-height column (8) in a sliding mode, the lower end of the return spring (9) is provided with an upper pressing block (10), and the upper pressing block (10) is connected to the outer surface of the equal-height column (8) in a sliding mode.

3. A TO-263 device utility molding mechanism as claimed in claim 1, wherein: grooves are arranged on the lower shaping block (2) and the upper pressing block (10).

4. A TO-263 device utility molding mechanism as claimed in claim 1, wherein: the inner side of the upper shaping block (6) is provided with a cavity (52), a U-shaped push handle (53) is connected in the cavity (52) in a sliding mode, the U-shaped push handle (53) penetrates through the upper template (5) to be connected with the sliding block (51) in a contact mode, and a rotating groove (54) is formed in the U-shaped push handle (53).

5. A TO-263 device utility molding mechanism as in claim 4 wherein: the rotary groove (54) is connected with a rotary block (55) in a rotary mode, a threaded rod (56) is arranged at the upper end of the rotary block (55), and the threaded rod (56) penetrates through the U-shaped push handle (53) to be in threaded connection with the upper template (5).