CN111097862A - Chip pin forming and shearing clamp and using method thereof - Google Patents
Chip pin forming and shearing clamp and using method thereof Download PDFInfo
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- CN111097862A CN111097862A CN201911366944.XA CN201911366944A CN111097862A CN 111097862 A CN111097862 A CN 111097862A CN 201911366944 A CN201911366944 A CN 201911366944A CN 111097862 A CN111097862 A CN 111097862A
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- forming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/004—Bending wire other than coiling; Straightening wire by means of press-type tooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F11/00—Cutting wire
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Abstract
Providing a chip pin forming and shearing clamp and a using method thereof; the device comprises a forming clamp consisting of a male die and a female die, and further comprises a square scale; the male die comprises a bottom cushion block and a positioning boss on the bottom cushion block, and a fusiform guide block is arranged on the periphery of the upper end face of the positioning boss; a forming boss is arranged at the guide position of the guide block; the chip body to be cut is placed on the molding boss; the male die and the female die are guided and matched through the guide posts; the female die body is provided with a guide through groove and a positioning groove matched with the positioning boss; a guide block through groove for containing the guide block is avoided, and a forming through groove for pressing and forming the pins of the chip body to be cut at one time is formed; sleeving a square frame scale on the molded chip body; the square scale is used to shear the chip pins. The invention can save the purchase cost of the molding and shearing equipment, reduce the occupied space, ensure that the pins of the chip subjected to molding and shearing have good coplanarity and uniform length, have good effect through production practice, greatly improve the welding qualification rate and save the cost by more than 10 ten thousand yuan.
Description
Technical Field
The invention particularly relates to a chip pin forming and shearing clamp and a using method thereof.
Background
At present, pins of an imported chip used by a certain product need to be molded and cut before mounting, and the length of the cut pins is kept to be 0.5-0.7 mm, and due to the fact that no special molding and cutting equipment is provided, a molded device has a series of problems of poor quality consistency, poor coplanarity, uneven pin cutting and the like, mounting and welding quality can be affected due to overlong pins, and components can not be welded and scrapped due to overlong pins. Because the chip has 172 pins, the pins of the chip are easy to deform during manual forming and shearing, the length is not easy to control, the chip can be formed and sheared only by operators with high skills, the production efficiency is low, the rejection rate of products is high, and the subsequent welding quality is influenced. In order to solve the problem, the following technical scheme is proposed.
Disclosure of Invention
The technical problems solved by the invention are as follows: the chip pin forming and shearing clamp and the using method thereof are provided, and the technical problems that pins are easy to deform, low in efficiency and high in rejection rate when chip pins are directly and manually cut by a shear in the prior art are solved.
The technical scheme adopted by the invention is as follows: a chip pin forming and shearing clamp; the method is characterized in that: the device comprises a forming clamp consisting of a male die and a female die, and also comprises a square scale which is cut for use after forming; the male die comprises a bottom cushion block for supporting and heightening the chip body; a positioning boss for convex-concave matching with the female die positioning groove is arranged at the center of the upper horizontal end surface of the bottom cushion block; the periphery of the horizontal plane of the upper end surface of the positioning boss is provided with at least two guide blocks; the guide block is in a fusiform structure and guides the chip body to be cut from at least two right-angle vertex angles of the chip body to be cut; the guide position of the guide block is provided with a forming boss; the upper end surface of the molding boss is horizontally and rightly placed with the chip body to be cut which is rightly guided by the guide block; a plurality of guide posts are vertically arranged on the upper horizontal end surface of the male die body; the guide post is used for guiding and mounting the female die; the female die body is provided with a guide through groove which is matched with the guide post; the female die body is also provided with a positioning groove matched with the positioning boss; in addition, the female die body is also provided with a guide block through groove for avoiding and containing the guide block; a forming through groove for pressing and forming the pins of the chip body to be cut at one time according to the forming size L is formed in the center of the female die body communicated with the guide block through groove; the forming through groove is of a vertical upright cubic structure and is used for pressing and bending the upper end surface of the positioning boss at one time according to the shape of the forming boss to form a chip pin of the chip body to be cut; taking out the chip body after the compression molding and sleeving a square frame scale at the molding position of the chip body in a matching manner; the square scale is in a square shape and is matched with the forming surface of the chip body in a sleeved mode, and the square scale is used for cutting pins of the chip along the straight line edge of the square scale.
In the above technical solution, preferably: the top of the guide post is in the shape of a bullet head.
In the above technical solution, further: the positioning surface of the positioning boss is a vertical positioning surface of a right-angle structure or a wedge-shaped positioning surface with a small upper part and a large lower part of an obtuse-angle structure.
In the technical scheme, the profiling shape of the forming boss is a right-angle forming boss.
In the technical scheme, a plurality of forming dents which are bent at right angles and are parallel to each other are formed at the corners of the forming surface of the forming boss; the shape and the number of the forming dents are matched and correspond to the shape and the number of the chip pins on each side of the chip body.
The use method of the chip pin forming and shearing clamp is characterized in that: the method comprises the following steps:
under the guide action of the guide block, the chip body is rightly placed on the upper end face of the forming boss;
step two, pressing and forming: the female die combines the positioning groove of the female die with the positioning boss of the male die under the guiding action of the guiding columns so as to close the male die and the female die; when the male die and the female die are combined, the chip pins of the chip body are pressed downwards and bent at one time according to the required forming size L through the forming through grooves of the female die;
taking out the chip body which is pressed and bent, and matching a square frame scale at the periphery of the bent and formed part of the chip body;
and step four, cutting the chip pins along the outer side edge of the square ruler by using a scissors for cutting the pins so as to cut the chip pins of the chip body regularly according to the required size D.
In the above technical solution, further: the chip body cut in the fourth step keeps the square scale which is matched and sleeved with the chip body, and the chip body carries the square scale to finish mounting and welding; and (5) removing the square staff gauge after the surface mounting welding is finished.
Compared with the prior art, the invention has the following advantages:
1. the invention saves the purchase cost of the special shearing equipment; the shearing chip is formed by using the clamp, so that the clamp is simple in integral structure, economical and practical; when the male die and the female die are matched in a convex-concave matching way, the bending forming surface of the chip body 4 to be cut is formed in a one-step compression mode through the forming through grooves 2-3; then, a square frame scale 3 is sleeved outside the forming surface, and pins are cut along the outer side edge of the square frame scale 3 in a flush manner; the shearing quality consistency of the chip pins is excellent; the coplanarity is good; cutting pins to be uniform; reliable guarantee can be provided for the post-mounting and welding operation;
2. after the chip body 4 is cut by using the square frame scale 3, the square frame scale 3 can be used as a shaping hoop of a pin; so that the square frame scale 3 is taken to be used as a warp-proof shaping hoop through the square frame scale 3, the chip body 4 chip pin mounting and welding operation is completed, and the warp deformation of the chip pin during welding is prevented;
3. the invention can realize one-time compression molding of 172 pins of a chip; even ordinary operators can finish the molding and shearing of the chip pins, so that the chip is prevented from being scrapped, the production efficiency is effectively improved, and the product quality is improved;
4. the clamp has low cost and simple process; the one-time submission qualified rate after welding reaches 100%, the rejection rate of the chip is reduced, and the cost is saved by 10 ten thousand yuan (5000 yuan/piece).
Drawings
Figure 1 is a schematic perspective view of a male mould 1 according to the invention;
FIG. 2 is a schematic perspective view of a female mold 2 according to the present invention
FIG. 3 is a top view of the female mold of FIG. 2;
fig. 4 is a front view of a square scale 3;
fig. 5 is a schematic diagram of a structure of a chip pin before the chip body 4 to be cut is cut.
FIG. 6 is a diagram showing a state of use of the male mold 1 and the female mold 2 for mold clamping and molding the chip pins of the chip body 4 to be cut;
FIG. 7 is a diagram showing a state of use in which a square scale is fitted to a portion where a chip body is formed after the male mold 1 and the female mold 2 are matched and molded;
fig. 8 is a front view of the chip body 4 after the shear molding;
figure 9 is a bottom elevation view of the male mould 1 shown in figure 1;
figure 10 is a top elevation view of the male mould 1 shown in figure 1.
Detailed Description
Specific embodiments of the present invention are described below with reference to fig. 1-10. It is to be understood that the following described embodiments are illustrative only and are not to be construed as specifically limiting the invention.
The following examples are provided to facilitate a better understanding of the present invention, but are not intended to limit the present invention. Mounting and welding methods in the following embodiments are all conventional methods unless otherwise specified. The materials for the members used in the following examples are commercially available unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "provided" is to be interpreted broadly, and may, for example, be fixedly connected, arranged, detachably connected, arranged, or integrally connected and arranged. For example, they may be directly connected to each other or indirectly connected to each other through other intermediate members. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A chip pin forming and shearing clamp; the method is characterized in that: the device comprises a forming clamp (shown in figures 1 and 2) consisting of a male die 1 and a female die 2, and also comprises a square ruler 3 (shown in figure 4) used for cutting after forming; the male mold 1 comprises a bottom cushion block 101 (shown in figure 1) for supporting and raising the chip body 4; a positioning boss 102 for convex-concave matching with a female die positioning groove is formed in the center of the upper horizontal end face of the bottom cushion block 101; the periphery of the horizontal plane of the upper end surface of the positioning boss 102 is provided with at least two guide blocks 103; the guide block 103 is in a shuttle-shaped structure and guides the chip body 4 to be cut from at least two right-angle vertex angles of the chip body 4 to be cut, and a forming boss 104 is arranged at the guide position of the guide block 103; the upper end surface of the molding boss 104 is horizontally and rightly placed with the chip body 4 to be cut, which is rightly guided by the guide block 103; a plurality of guide posts 105 are vertically arranged on the horizontal end surface of the male die 1; the guide column 105 is used for guiding and mounting the female die 2; a guide through groove 2-1 which is matched with the guide post 105 is formed in the die body of the female die 2; the die body of the female die 2 is also provided with a positioning groove matched with the positioning boss 102; in addition, the female die 2 is also provided with a guide block through groove 2-2 for avoiding and containing the guide block 103; a forming through groove 2-3 for pressing and forming the pin of the chip body 4 to be cut at one time according to the forming size L (as shown in figure 3) is formed in the center of the die body of the female die 2 communicated with the through groove 2-2 of the guide block; the forming through groove 2-3 is of a vertical cube structure, and the forming through groove 2-3 is used for pressing and bending the chip pins of the chip body 4 to be cut at one time on the upper end face of the positioning boss 102 according to the shape of the forming boss 103; taking out the molded chip body 4 and sleeving a square ruler 3 at the molding position of the chip body 4 in a matching manner (as shown in FIG. 7); the square scale 3 is square and is adapted to be sleeved on the molding surface of the chip body 4, and the square scale 3 is used for cutting the chip pins along the straight edge of the square scale.
Based on the above embodiment, the top of the guiding column 105 is shaped like a bullet (see fig. 1 and fig. 2), so as to provide excellent guiding for the mating of the male mold 1 and the female mold 2 for fast mold clamping.
On the basis of the above embodiment, the positioning surface of the positioning boss 102 is a vertical positioning surface of a right-angle structure or a wedge-shaped positioning surface of an obtuse-angle structure with a small upper part and a large lower part. In which, as shown in fig. 1, the positioning boss 102 is a right-angle structure with a vertical positioning surface.
On the basis of the above embodiment, the profiling shape of the forming boss 104 is a right-angle forming boss.
On the basis of the above embodiment, the forming surface corner of the forming boss 104 is provided with a plurality of forming dents 1041 which are bent at right angles and are parallel to each other; the shapes and the number of the molding dents 1041 match with the shapes and the number of the chip leads on each side of the chip body 4 (see fig. 9).
On the basis of the embodiment, the use method of the chip pin forming and shearing clamp is characterized in that: the method comprises the following steps:
under the guiding action of the guiding block 103, the chip body 4 is rightly placed on the upper end face of the forming boss 104;
step two, (as shown in figure 6) downward pressing and forming: under the guiding action of the guide columns 105, the female die 2 performs convex-concave matching on the positioning groove of the female die 2 and the positioning boss 102 of the male die 1 so as to clamp the male die 1 and the female die 2; when the male die 1 and the female die 2 are matched, chip pins of the chip body 4 are pressed downwards and bent at one time according to the required forming size L through forming through grooves 2-3 (shown in figures 2 and 3) of the female die 2;
step three, (as shown in fig. 7) taking out the chip body 4 which is formed by pressing and bending, and matching the square scale 3 at the periphery of the bending part of the chip body 4; the material of the square staff 3 comprises but is not limited to stainless steel material or titanium alloy material; all materials capable of preventing the deformation of the square frame ruler 3 are suitable for the scheme.
Step four, cutting the chip pins along the outer side edge of the square ruler 3 by using a pin cutting scissors (shown in fig. 7), so that the chip pins of the chip body 4 are cut in order according to the required dimension D.
In the above embodiment, further: the chip body 4 cut in the fourth step keeps the square scale 3 which is matched and sleeved with the chip body 4, and the chip body 4 carries the square scale 3 to complete mounting and welding; and (5) removing the square staff gauge 3 after welding is finished.
When in use: guiding and flatly placing a chip body to be cut (as shown in FIG. 5) on the upper end surface of the forming boss 104; then the female die 2 is buckled and matched with the male die 1; a chip pin with the required forming size L is formed by one-time pressing and bending through a forming through groove 2-3 of a female die 2 through a forming boss 104 of a male die 1; then taking out the chip body 4 which is formed by pressing and bending, sleeving a square scale 3 outside the chip body 4 (as shown in figure 7) by bending, and cutting chip pins along the outer side edge of the square scale 3 by using a shear to obtain the cut chip body 4 (as shown in figure 8) with uniform quality consistency and excellent coplanarity.
From the above description it can be found that: the invention saves the purchase cost of the special shearing equipment; the shearing chip is formed by using the clamp, so that the clamp is simple in integral structure, economical and practical; when the male die and the female die are matched in a convex-concave matching way, the bending forming surface of the chip body 4 to be cut is formed in a one-step compression mode through the forming through grooves 2-3; then, a square frame scale 3 is sleeved outside the forming surface, and pins are cut along the outer side edge of the square frame scale 3 in a flush manner; the shearing quality consistency of the chip pins is excellent; the coplanarity is good; cutting pins to be uniform; can provide reliable guarantee for later-stage mounting and welding operation. Moreover, after the chip body 4 is cut by using the square frame scale 3, the square frame scale 3 can be used as a shaping hoop of the pin; so that the square ruler 3 can be worn to complete the mounting and welding operation of the chip pins of the chip body 4, and the chip pins are prevented from being deformed during welding. The invention can realize one-time compression molding of 172 pins of the chip body; even ordinary operating personnel also can accomplish the shaping and the shearing of chip pin, avoid the chip to scrap, effectively improve production efficiency, promote product quality. Through practice, the clamp has low cost and simple process; the one-time submission qualified rate after welding reaches 100%, the rejection rate of the chip is reduced, and the cost is saved by 10 ten thousand yuan (5000 yuan/piece).
In summary, the following steps: the invention has simple structure, can conveniently place the chip body 4 in a clamp formed by closing a male die and a female die for molding, and uses a matched square frame scale 3 for shearing after molding; and can finish the surface mounting and welding of the chip body under the shaping action of the square ruler 3. The purchasing cost of forming and shearing equipment is saved, the occupied space is reduced, the coplanarity of pins of the formed and sheared chips is good, the lengths of the pins are uniform, the effect is good through production practice, the welding qualified rate is greatly improved, and the cost is saved by more than 10 ten thousand yuan.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
The above-mentioned embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and therefore, all equivalent changes made by the contents of the claims of the present invention should be included in the claims of the present invention.
Claims (7)
1. A chip pin forming and shearing clamp; the method is characterized in that: the device comprises a forming clamp consisting of a male die (1) and a female die (2), and also comprises a square scale (3) which is cut for use after forming; the male die (1) comprises a bottom cushion block (101) for supporting and heightening the chip body (4); a positioning boss (102) for convex-concave matching with a female die positioning groove is formed in the center of the upper horizontal end face of the bottom cushion block (101); the periphery of the horizontal plane of the upper end surface of the positioning boss (102) is provided with at least two guide blocks (103); the guiding block (103) is of a shuttle-shaped structure and guides the chip body (4) to be cut from at least two right-angle vertex angles of the chip body (4) to be cut; a forming boss (104) is arranged at the pilot position of the pilot block (103); the upper end surface of the molding boss (104) is horizontally and rightly placed with the chip body (4) to be cut, which is rightly guided by the guide block (103); a plurality of guide columns (105) are vertically arranged on the horizontal end face of the die body of the male die (1); the guide column (105) is used for guiding and mounting the female die (2); a guide through groove (2-1) which is matched with the guide column (105) is formed in the die body of the female die (2); the die body of the female die (2) is also provided with a positioning groove matched with the positioning boss (102); in addition, the die body of the female die (2) is also provided with a guide block through groove (2-2) for avoiding and containing the guide block (103); a forming through groove (2-3) used for pressing and forming the pin of the chip body (4) to be cut at one time according to the forming size L is formed in the center of the die body of the female die (2) communicated with the guide block through groove (2-2); the forming through groove (2-3) is of a vertical upright cubic structure and is used for pressing and bending the upper end surface of the positioning boss (102) at one time according to the shape of the forming boss (103) to form a chip pin of the chip body (4) to be cut; taking out the chip body (4) after the compression molding and sleeving a square scale (3) at the molding position of the chip body (4) in a matching way; the square scale (3) is square and is matched with the molding surface of the chip body (4), and the square scale (3) is used for cutting the chip pins along the straight edge of the square scale.
2. The die pin shaping shear jig of claim 1, wherein: the top of the guide column (105) is in the shape of a bullet head.
3. The die pin shaping shear jig of claim 1, wherein: the positioning surface of the positioning boss (102) is a vertical positioning surface of a right-angle structure or a wedge-shaped positioning surface with a small upper part and a large lower part of an obtuse-angle structure.
4. The die pin shaping shear jig of claim 1, wherein: the profiling shape of the forming boss (104) is a right-angle forming boss.
5. The die pin shaping shear jig of claim 4, wherein: a plurality of forming dents (1041) which are bent at right angles and are parallel to each other are formed at the corners of the forming surface of the forming boss (104); the shapes and the number of the forming dents (1041) are matched and correspond to the shapes and the number of the chip pins on each side of the chip body (4).
6. The use method of the chip pin forming and cutting clamp of any one of claims 1 to 5, wherein the chip pin forming and cutting clamp comprises the following steps: the method comprises the following steps:
under the guide action of a guide block (103), a chip body (4) is rightly placed on the upper end face of a forming boss (104);
step two, pressing and forming: the female die (2) combines the positioning groove of the female die (2) with the positioning boss (102) of the male die (1) under the guiding action of the guide post (105) to mold the male die (1) and the female die (2); when the male die (1) and the female die (2) are combined and matched, chip pins of the chip body (4) are pressed downwards for bending and forming at one time according to the required forming size L through the forming through grooves (2-3) of the female die (2);
thirdly, taking out the chip body (4) which is pressed and bent, and matching and sleeving the square scale (3) on the periphery of the bent and formed part of the chip body (4);
and step four, cutting the chip pins along the outer side edge of the square ruler (3) by using a scissors for cutting the pins so as to cut the chip pins of the chip body (4) in order according to the required size D.
7. The method for using the clip according to claim 6, wherein: step four, the cut chip body (4) keeps the square scale (3) which is matched and sleeved with the chip body, and the chip body (4) carries the square scale (3) to complete mounting and welding; and (3) detaching the square staff gauge (3) after the mounting and welding are finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911366944.XA CN111097862A (en) | 2019-12-26 | 2019-12-26 | Chip pin forming and shearing clamp and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911366944.XA CN111097862A (en) | 2019-12-26 | 2019-12-26 | Chip pin forming and shearing clamp and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111097862A true CN111097862A (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911366944.XA Pending CN111097862A (en) | 2019-12-26 | 2019-12-26 | Chip pin forming and shearing clamp and using method thereof |
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| Country | Link |
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| CN (1) | CN111097862A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114951489A (en) * | 2022-06-07 | 2022-08-30 | 中国电子科技集团公司第二十九研究所 | Double-balanced mixer pin forming and shearing tool and method |
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| US4064917A (en) * | 1976-10-18 | 1977-12-27 | Honeywell Information Systems Inc. | Apparatus for cutting and forming flexible beam leads of an integrated circuit chip |
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| CN202752510U (en) * | 2012-07-07 | 2013-02-27 | 上海鼎虹电子有限公司 | Fixture for processing of electronic element |
| CN203003006U (en) * | 2012-11-23 | 2013-06-19 | 成都泛华航空仪表电器有限公司 | Pin forming die for CQFP |
| CN203565661U (en) * | 2013-11-06 | 2014-04-30 | 天津市英贝特航天科技有限公司 | Forming die of double-row flat packaging chip pins |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4064917A (en) * | 1976-10-18 | 1977-12-27 | Honeywell Information Systems Inc. | Apparatus for cutting and forming flexible beam leads of an integrated circuit chip |
| JP2000024716A (en) * | 1998-07-08 | 2000-01-25 | Amada Co Ltd | Bending die set and punch press provided with bending die set |
| CN102626746A (en) * | 2012-04-18 | 2012-08-08 | 苏州市伟业金属制品有限公司 | Double-bending die for polisher spanner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114951489A (en) * | 2022-06-07 | 2022-08-30 | 中国电子科技集团公司第二十九研究所 | Double-balanced mixer pin forming and shearing tool and method |
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Application publication date: 20200505 |