Pin forming device for integrated circuit

Abstract

The utility model relates to the technical field of integrated circuit packaging equipment, and discloses a pin forming device for an integrated circuit, the pin forming device comprises a fixing frame, a downward pressing forming structure, a driving structure and an upward pressing forming structure, the downward pressing forming structure is arranged on the inner bottom of the fixing frame, and the integrated circuit is placed on the downward pressing forming structure; the driving structure is arranged on the fixing frame and located on the top of the fixing frame. The upper pressing forming structure is arranged at the output end of the driving structure and is opposite to the lower pressing forming structure; and the driving structure drives the upper pressing forming structure to move towards the lower pressing forming structure so as to bend and form the pins. The pin bending consistency is ensured, the cost is reduced, the reject ratio and the rejection rate of the integrated circuit are reduced, and the welding reliability and the welding quality of the integrated circuit are improved.

Description

Technical Field

[0001] The utility model relates to the field of integrated circuit packaging equipment, in particular to a pin forming device for integrated circuits. Background Art

[0002] External pins for facilitating installation and achieving electrical connection are respectively arranged on both sides of the integrated circuit. During production, the external pins of the integrated circuit are bent appropriately according to needs to facilitate soldering and fixing.

[0003] In the prior art, during the mass production of integrated circuit components packaging, equipment failures or die differences will cause the standing height of the external pins not to meet the requirements, that is, the bending of the external pins does not meet the requirements, affecting the normal soldering of subsequent application products, and causing problems such as poor soldering. Generally, products with non-conforming bending are removed through the visual inspection process by personnel. Since the automatic equipment has tracks and a material feeding and grasping mechanism in the die part, it is not convenient to put materials for rework. The angles and dimensions of manual extrusion with tweezers have poor consistency and do not meet the product size requirements, resulting in low yield and high cost. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a pin forming device for integrated circuits, aiming to solve the technical problems of poor bending consistency, high cost and low yield caused by manual rework of pins.

[0005] To achieve the above purpose, the utility model provides a pin forming device for integrated circuits, and the pin forming device includes:

[0006] A fixing frame;

[0007] A downward pressing and forming structure, which is arranged on the inner bottom of the fixing frame, and the integrated circuit is placed on the downward pressing and forming structure;

[0008] A driving structure, which is arranged on the fixing frame and located at the top of the fixing frame;

[0009] An upward pressing and forming structure, which is arranged on the output end of the driving structure and is arranged opposite to the downward pressing and forming structure; wherein,

[0010] The driving structure drives the upward pressing and forming structure to move towards the downward pressing and forming structure to bend and form the pins.

[0011] Further, in an embodiment, the upper pressing and forming structure includes a first fixing plate and an upper pressing and forming tool with a first preset shape. The first fixing plate is disposed on the output end of the driving structure, the upper pressing and forming tool is disposed on the first fixing plate, and the upper pressing and forming tool and the driving structure are respectively located on opposite sides of the first fixing plate.

[0012] Further, in an embodiment, the lower pressing and forming structure includes a second fixing plate and a lower pressing and forming tool with a second preset shape. The second fixing plate is disposed on the inner bottom of the fixing frame, the lower pressing and forming tool is disposed on the second fixing plate, the lower pressing and forming tool and the upper pressing and forming tool are disposed opposite to each other, and the upper pressing and forming tool presses against the lower pressing and forming tool to bend and form the pin.

[0013] Further, in an embodiment, guide posts are provided on the second fixing plate, and guide sleeves are provided on the first fixing plate. The first fixing plate is slidably disposed at the upper end of the lower pressing and forming structure through the cooperation of the guide sleeves and the guide posts.

[0014] Further, in an embodiment, limiting rods are provided on opposite sides of the first fixing plate, and the limiting rods are located between the first fixing plate and the second fixing plate.

[0015] Further, in an embodiment, a first limiting block is provided at one end of the limiting rod facing the second fixing plate, and a second limiting block is provided on the second fixing plate corresponding to the first limiting block. When bending, the first limiting block and the second limiting block press against each other.

[0016] Further, in an embodiment, the upper pressing and forming structure further includes an elastic ejecting component, and the elastic ejecting component is disposed inside the upper pressing and forming tool.

[0017] Further, in an embodiment, the elastic ejecting component includes an ejecting rod and an elastic member. The ejecting rod passes through the upper pressing and forming tool, the elastic member is sleeved on the ejecting rod, and one end of the elastic member presses against the upper pressing and forming tool.

[0018] Further, in an embodiment, the fixing frame includes a third fixing plate, support columns, and a fixing base. The support columns are disposed between the third fixing plate and the fixing base, the lower pressing and forming structure is disposed on the fixing base, and the driving structure is disposed on the third fixing plate.

[0019] Further, in an embodiment, the driving structure includes a driving member and a commutator. The driving member is disposed on the fixing frame, the output end of the driving member is disposed on the upper pressing and forming structure, and the driving member is electrically connected to the commutator.

[0020] In the technical solution provided by the present utility model, a downward pressing and forming structure is arranged at the inner bottom of the fixing frame, and a driving structure is arranged at the top of the fixing frame. The upward pressing and forming structure is arranged at the output end of the driving structure, so that the driving structure can drive the upward pressing and forming structure to move towards the direction of the downward pressing and forming structure, and the upward pressing and forming structure and the downward pressing and forming structure are arranged oppositely, so that the upward pressing and forming structure can accurately bend the pins of the integrated circuit placed on the downward pressing and forming structure, ensuring the consistency of the pin bending, reducing the cost, the rejection rate and the scrap rate of the integrated circuit, and improving the reliability and the welding quality of the integrated circuit welding. Description of the Drawings

[0021] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the drawings in the figures do not constitute a proportional limitation.

[0022] Figure 1 It is a sectional view of the pin forming device according to an embodiment of the present utility model;

[0023] Figure 2 is Figure 1 a partial enlarged view of part A in

[0024] Figure 3 is Figure 1 a partial enlarged view of part B in

[0025] Among them, 100, pin forming device; 10, fixing frame; 101, third fixing plate; 102, support column; 103, fixing seat; 20, downward pressing and forming structure; 201, second fixing plate; 202, downward pressing and forming knife; 203, second limiting block; 30, driving structure; 301, driving member; 302, commutator; 40, upward pressing and forming structure; 401, first fixing plate; 402, upward pressing and forming knife; 403, limiting rod; 404, first limiting block; 405, elastic ejecting component; 406, ejecting rod; 407, elastic member; 408, third limiting block; 409, fourth limiting block; 410, rod body; 50, guide post; 200, integrated circuit; 221, pin. Detailed Embodiments

[0026] For the convenience of understanding the present utility model, the present utility model will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are only for the purpose of illustration. In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating relative importance or implicitly indicating the quantity of the indicated technical features. Thus, unless otherwise stated, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; the meaning of "plurality" is two or more. The term "comprising" and any variation thereof mean non-exclusive inclusion, and there may be or be added one or more other features, integers, steps, operations, units, components and / or their combinations.

[0027] In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. All the technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0028] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] Please refer to Figures 1-3 , an embodiment of the present utility model discloses a pin forming device 100 for an integrated circuit 200.

[0030] The integrated circuit 200 is an integrated circuit 200 to be reworked. The integrated circuit 200 includes an integrated circuit body and pins 221 arranged on the peripheral side of the integrated circuit body. Specifically, the integrated circuit body is an encapsulation body in which each integrated circuit component has been encapsulated in a colloid. The pins 221 can be external pins 221 respectively arranged on opposite sides of the integrated circuit body, or can be arranged on the external pins 221 on the four peripheral sides of the integrated circuit body. The external pins 221 are made of metal, and the external pins 221 are electrically connected to an external circuit by means such as welding, so that each circuit component in the integrated circuit 200 can be connected to the external circuit.

[0031] In an embodiment, the pin 221 forming device 100 includes a fixing frame 10, a downward pressing and forming structure 20 arranged on the inner bottom of the fixing frame 10, a driving structure 30 arranged on the top of the fixing frame 10, and an upward pressing and forming structure 40 arranged at the output end of the driving structure 30. The driving structure 30 drives the upward pressing and forming structure 40 to move towards the downward pressing and forming structure 20 to bend and form the pins 221, ensuring the consistency of the bending of the pins 221, reducing costs, the rejection rate and the scrap rate of the integrated circuit 200, and improving the reliability and welding quality of the welding of the integrated circuit 200.

[0032] Specifically, the fixing frame 10 includes a third fixing plate 101, support columns 102 and a fixing seat 103. The fixing seat 103 is placed on a workbench, the support columns 102 are arranged on the fixing seat 103, and there are at least 2 support columns 102, which are respectively arranged on opposite sides of the fixing seat 103. The third fixing plate 101 is arranged at the other end of the support columns 102 opposite to the end where the fixing seat 103 is arranged, forming a stable fixing frame 10.

[0033] Exemplarily, the number of the support columns 102 can be 2, 4, 6, 8, etc., preferably 2. The support columns 102 can be rectangular columns, square columns or circular columns, preferably circular columns.

[0034] The driving structure 30 includes a driving member 301 and a commutator 302. The driving member 301 is arranged on the third fixing plate 101, and the driving member 301 is located on the surface of the third fixing plate 101 facing the outside. The output end of the driving member 301 is arranged on the upward pressing and forming structure 40. The driving member 301 is used to drive the upward pressing and forming structure 40 to move towards the downward pressing and forming structure 20 to complete the bending of the pins 221 or move away from the downward pressing and forming structure 20 after the bending is completed. The commutator 302 is electrically connected to the driving member 301, and the commutator 302 is used to control the forward and reverse rotation / expansion and contraction direction of the driving member 301, and further control the upward and downward movement of the downward pressing and forming structure 20.

[0035] Exemplarily, the driving member 301 can be a motor or a cylinder, and the commutator 302 can be a solenoid valve.

[0036] The downward pressing and forming structure 20 is arranged on the fixed seat 103 and is located inside the fixing frame 10. The downward pressing and forming structure 20 and the upward pressing and forming structure 40 are arranged oppositely, so that when the upward pressing and forming structure 40 presses downward, it can accurately press on the downward pressing and forming structure 20 to bend the pin 221, ensuring the consistency of the bending of the pin 221, reducing the rejection rate and scrap rate of the integrated circuit 200, and improving the welding reliability and welding quality of the integrated circuit 200.

[0037] In an embodiment, the upward pressing and forming structure 40 includes a first fixing plate 401 and an upward pressing and forming tool 402 with a first preset shape. The first fixing plate 401 is arranged on the output end of the driving member 301, the upward pressing and forming tool 402 is arranged on the first fixing plate 401, and a first fixing block (not shown in the figure) is further arranged on the first fixing plate 401. The upward pressing and forming tool 402 is fixed to the first fixing block by fastening means such as screws, bolts and nuts. The upward pressing and forming tool 402 and the driving member 301 are respectively located on opposite sides of the first fixing plate 401, that is, the driving member 301 is located on the top of the first fixing plate 401 facing the outside, and the upward pressing and forming tool 402 is located on the top of the first fixing plate 401 facing its inside. The driving member 301 drives the upward pressing and forming tool 402 to move by driving the first fixing plate 401, and the structure is simple.

[0038] Furthermore, the downward pressing and forming structure 20 includes a second fixing plate 201 and a downward pressing and forming tool 202 with a second preset shape. The second fixing plate 201 is arranged on the fixed seat 103, the downward pressing and forming tool 202 is arranged on the second fixing plate 201, and a second fixing block (not shown in the figure) is further arranged on the second fixing plate 201. The downward pressing and forming tool 202 is fixed to the second fixing block by fastening means such as screws, bolts and nuts. The downward pressing and forming tool 202 and the upward pressing and forming tool 402 are arranged oppositely, and the first preset shape and the second preset shape form the shape of the pin 221 when surrounded. When the driving member 301 drives the first fixing plate 401 to drive the upward pressing and forming tool 402 to fit and press the downward pressing and forming tool 202, the upward pressing and forming tool 402 and the downward pressing and forming tool 202 bend and form the pin 221 placed on the downward pressing and forming tool 202, ensuring the consistency of the bending of the pin 221, reducing the cost, rejection rate and scrap rate of the integrated circuit 200, and improving the welding reliability and welding quality of the integrated circuit 200. It avoids the poor consistency of the forming angle of the pin 221 squeezed by the tweezers manually, resulting in a small yield rate of the integrated circuit 200 and a large scrap rate of the integrated circuit 200.

[0039] In one embodiment, guide posts 50 are provided on the second fixed plate 201. At least two guide posts 50 are provided, and are respectively arranged on both sides of the second fixed plate 201. Through holes are provided at the positions of the first fixed plate 401 corresponding to the guide posts 50, and guide sleeves (not shown in the figure) are embedded in the through holes. The guide posts 50 pass through the inner holes of the guide sleeves, so that the first fixed plate 401 is slidably arranged up and down along the guide posts 50 under the cooperation of the guide sleeves and the guide posts 50 at the upper end of the down-pressing forming structure 20, playing a guiding role in the moving direction of the first fixed plate 401, improving the movement direction stability of the upper pressing forming tool 402, enabling the upper pressing forming tool 402 to accurately align and fit with the lower pressing forming tool 202, and avoiding deviation of the upper pressing forming tool 402 from the lower pressing forming tool 202 during the descending process, so that the bending of the lead 221 does not meet the requirements.

[0040] Exemplarily, the material of the guide sleeve is wear-resistant material, which improves the service life of the lead 221 forming device 100.

[0041] In one embodiment, limiting rods 403 are provided on opposite sides of the first fixed plate 401. The limiting rods 403 are located on opposite sides of the first fixed plate 401 and the second fixed plate 201. The limiting rods 403 are used to support the first fixed plate 401 so as to control the distance between the first fixed plate 401 and the second fixed plate 201. The limiting rods 403 are arranged on the first fixed plate 401 in an adjustable manner, so that the lead 221 forming device 100 can appropriately adjust the length of the limiting rods 403 according to the change of the forming angle of the lead 221. The length of the limiting rods 403 controls the gap between the downward pressing of the first fixed plate 401 and the second fixed plate 201, thereby ensuring the forming angle and ensuring the consistency of the leads 221.

[0042] Exemplarily, the limiting rods 403 can be rectangular rod-shaped bodies, square rod-shaped bodies or circular rod-shaped bodies, and are preferably circular rod-shaped bodies.

[0043] Further, a first limiting block 404 is provided at one end of the limiting rod 403 facing the second fixed plate 201. A second limiting block 203 is provided on the second fixed plate 201 corresponding to the first limiting block 404. During bending, as the first fixed plate 401 descends, the first limiting block 404 presses against the second limiting block 203. The first limiting block 404, the second limiting block 203 and the limiting rod 403 cooperate to limit the descending stroke of the first fixed plate 401, ensuring the consistency of the bending of the leads 221, reducing the cost, the rejection rate and the scrap rate of the integrated circuit 200, and improving the welding reliability and welding quality of the integrated circuit 200.

[0044] The first limiting block 404 and the second limiting block 203 increase the force-bearing area, improving the service life of the limiting rod 403. The materials of the first limiting block 404 and the second limiting block 203 can be steel, which is hard. This ensures that the first limiting block 404 and the second limiting block 203 will not deform due to the downward pressure, thus affecting the downward stroke of the first fixing plate 401, and guaranteeing the bending consistency of the pins 221.

[0045] In one embodiment, the elastic ejecting component 405 includes an ejecting rod 406 and an elastic member 407. The ejecting rod 406 is disposed through the upper pressing and forming tool 402, and the elastic member 407 is sleeved on the ejecting rod 406, and one end of the elastic member 407 is pressed against the upper pressing and forming tool 402.

[0046] Specifically, the ejecting rod 406 includes a rod body 410, a third limiting block 408, and a fourth limiting block 409. The third limiting block 408 and the fourth limiting block 409 are respectively disposed at two ends of the rod body 410. The rod body 410 is disposed through the stepped through-hole of the upper pressing and forming tool 402. The third limiting block 408 and the fourth limiting block 409 movably limit the rod body 410 within the stepped through-hole. The elastic member 407 is sleeved on one end of the rod body 410 connected to the fourth limiting block 409, and one end of the elastic member 407 is connected to the stepped wall of the stepped through-hole of the upper pressing and forming tool 402, and the other end of the elastic member 407 is connected to the fourth limiting block 409. When the driving member 301 presses down, the ejecting member will float upward. When the upper pressing and forming tool 402 rises, the ejecting member will, under the action of the spring, push out the fourth limiting block 409 so that the fourth limiting block 409 presses down the integrated circuit 200 body, facilitating the separation of the upper pressing and forming tool 402 from the pins 221. The setting of the elastic ejecting component 405 ensures that each formed integrated circuit 200 can be peeled off from the adhesion of the upper pressing and forming tool 402, enabling the operator to pick up the formed integrated circuit 200 with tweezers and then place the next integrated circuit 200 to be reworked for rework.

[0047] During use, only the integrated circuit to be reworked needs to be placed and fixed on the lower pressing and forming tool. Then, according to the pin requirements of the integrated circuit to be reworked, the length of the limiting rod is adjusted. After adjustment, the driving member is started. While the driving member drives the first fixing plate to press down, it also drives the upper pressing and forming tool to press down to bend the pins of the integrated circuit placed on the lower pressing and forming tool. The pin forming device of the present utility model not only has a simple structure and convenient operation, but also guarantees the bending consistency of the pins, reduces costs, the rejection rate and the scrap rate of the integrated circuit, and improves the reliability and welding quality of the integrated circuit welding.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above. For the sake of brevity, they are not provided in detail; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A pin forming device for an integrated circuit, the integrated circuit comprising an integrated circuit body and pins provided on the peripheral side of the integrated circuit body, characterized in that, The pin forming device includes: A fixed frame; A downward pressing and forming structure, which is arranged on the inner bottom of the fixed frame, and the integrated circuit is placed on the downward pressing and forming structure; A driving structure, which is arranged on the fixed frame and located at the top of the fixed frame; An upward pressing and forming structure, which is arranged on the output end of the driving structure and is arranged opposite to the downward pressing and forming structure; wherein, The driving structure drives the upward pressing and forming structure to move towards the downward pressing and forming structure to bend and form the pins.

2. The pin forming device according to claim 1, wherein The upward pressing and forming structure includes a first fixing plate and an upward pressing and forming knife with a first preset shape. The first fixing plate is arranged on the output end of the driving structure, the upward pressing and forming knife is arranged on the first fixing plate, and the upward pressing and forming knife and the driving structure are respectively located on opposite sides of the first fixing plate.

3. The pin forming device according to claim 2, characterized in that, The downward pressing and forming structure includes a second fixing plate and a downward pressing and forming knife with a second preset shape. The second fixing plate is arranged on the inner bottom of the fixed frame, the downward pressing and forming knife is arranged on the second fixing plate, the downward pressing and forming knife and the upward pressing and forming knife are arranged opposite to each other, and the upward pressing and forming knife fits and presses against the downward pressing and forming knife to bend and form the pins.

4. The pin forming device according to claim 3, wherein Guide posts are arranged on the second fixing plate, and guide sleeves are arranged on the first fixing plate. The first fixing plate is slidably arranged at the upper end of the downward pressing and forming structure through the cooperation of the guide sleeves and the guide posts.

5. The pin forming device according to claim 3, characterized in that, Limit rods are arranged on opposite sides of the first fixing plate, and the limit rods are located between the first fixing plate and the second fixing plate.

6. The pin forming device according to claim 5, characterized in that, A first limit block is arranged at one end of the limit rod facing the second fixing plate, and a second limit block is arranged on the second fixing plate corresponding to the first limit block. During bending, the first limit block and the second limit block fit and press against each other.

7. The pin forming device according to claim 2, wherein, The upward pressing and forming structure further includes an elastic ejecting component, which is arranged inside the upward pressing and forming knife.

8. The pin forming device according to claim 7, wherein, The elastic ejecting component includes an ejecting rod and an elastic member. The ejecting rod penetrates through the upward pressing and forming knife, the elastic member is sleeved on the ejecting rod, and one end of the elastic member is pressed against the upward pressing and forming knife.

9. The pin forming device according to claim 1, characterized in that, The fixed frame includes a third fixing plate, support columns and a fixed seat. The support columns are arranged between the third fixing plate and the fixed seat. The downward pressing and forming structure is arranged on the fixed seat, and the driving structure is arranged on the third fixing plate.

10. The pin forming device according to claim 1, characterized in that, The driving structure includes a driving member and a commutator. The driving member is arranged on the fixed frame, the output end of the driving member is arranged on the upward pressing and forming structure, and the driving member is electrically connected to the commutator.

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