Chip pin reworking and correcting device

Abstract

The utility model discloses a chip pin reworking and correcting device which comprises a stamping device and a correcting device. The correcting device comprises a top plate, a middle plate and a bottom plate. The top plate is elastically connected with the middle plate, an assembly plate is arranged at the bottom of the middle plate, and an upper cutter is arranged at the bottom of the top plate and penetrates through the middle plate and the assembly plate. The top of the top plate is fixedly connected with the stamping device; the stamping device stamps the top plate in the direction perpendicular to the plate body. An assembly workpiece is arranged on the bottom plate, a groove is formed in the bottom of the assembly plate, the groove is matched with a main body part of a chip to be reworked and corrected, and the assembly workpiece is located below the groove of the assembly plate. According to the utility model, the problems of low manual reworking efficiency, low yield and high cost in the reworking process of defective products in the rib cutting and forming process in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of semiconductor processing, especially relates to a chip pin rework correction device. BACKGROUND

[0002] In the semiconductor packaging manufacturing process, the cutting rib forming process is the key link of cutting and shaping the semiconductor chip pins on the lead frame. However, due to improper operation of personnel or equipment abnormalities, etc., product unshaping or pin warping and other adverse phenomena often occur. If these defective products are not reworked, they will be scrapped, causing economic losses.

[0003] At present, for the defective products in the cutting rib forming process, manual rework is mainly relied on. However, the existing manual rework method has the following obvious problems:

[0004] Low rework efficiency: the existing defective product rework method usually uses a simple template to correct the pins. This method is inconvenient to operate and requires manual adjustment and positioning by the operator, resulting in extremely low rework efficiency, with an average of only 3-5 products per minute.

[0005] Low rework yield: due to the subjectivity and instability of manual operation, as well as the precision limitation of the simple template, the quality of the reworked products is difficult to guarantee. According to the actual situation, about 30 products out of every 100 reworked products do not meet the control requirements and still have the risk of being scrapped. INVENTION CONTENTS

[0006] To solve the above problems, the utility model provides a chip pin rework correction device, which solves the problems of low manual rework efficiency, low yield and high cost in reworking defective products in the cutting rib forming process of the prior art.

[0007] The utility model provides a chip pin rework correction device, and the specific technical scheme is as follows:

[0008] It comprises a punching device and a correction device;

[0009] The correction device comprises a top plate, a middle plate and a bottom plate; the top plate is elastically connected with the middle plate, the bottom of the middle plate is provided with an assembly plate, the bottom of the top plate is provided with an upper knife, and the upper knife penetrates the middle plate and the assembly plate; the top of the top plate is fixedly connected with the punching device; the punching device punches the top plate along the direction perpendicular to the plate body;

[0010] The bottom plate is provided with an assembly workpiece, the bottom of the assembly plate is provided with a groove, the groove is adapted to the main part of the chip to be reworked and corrected, and the assembly workpiece is located below the groove of the assembly plate.

[0011] The device does not need manual intervention to correct the processing, and the upper knife of the top plate acts on the pins on both sides of the chip placed on the assembled workpiece through stamping, so that the correction is realized in a standard process, the efficiency of rework is improved, and the problem of low yield caused by manual correction is avoided.

[0012] Further, the stamping device comprises a main rod, a fixed block, a stamping plate, a stamping rod and a pressing rod;

[0013] The fixed block is fixedly connected with the main rod, the stamping rod penetrates through the fixed block along the direction of the main rod, the stamping plate is fixedly connected at the bottom end of the stamping rod vertically, the top plate is fixedly connected with the stamping plate, the pressing rod is connected with the stamping rod, and the stamping plate is sleeved with a limiting column;

[0014] The top end of the stamping rod is fixedly connected with a second end plate, and the second end plate is elastically connected with the fixed block.

[0015] By pressing the pressing rod, the stamping rod is driven to move downward along the rod body, and the entire correction device is driven to move horizontally downward to the chip to be reworked.

[0016] Further, the top of the main rod is fixedly connected with a first end plate.

[0017] The setting of the end plate ensures the stability of the main rod, and also limits the fixed block on the main rod.

[0018] Further, the main rod is provided with two, and the fixed block is in a T-shaped structure, and one end of the transverse direction of the T-shaped structure is sleeved on the two main rods.

[0019] The fixed block is the main auxiliary component for the stamping movement of the stamping rod, and the stability of the fixed block is ensured by the two main rods, and the stability of the longitudinal stamping movement is ensured, so as to ensure the accuracy of the falling point of the upper knife.

[0020] Further, the second end plate and the fixed block are elastically connected by a second spring, the second end plate is further provided with a second limiting rod fixedly connected, the fixed block is provided with a limiting hole matched with the limiting column, and the second spring is sleeved on the second limiting rod.

[0021] After the chip is processed, the pressing rod is loosened, the second end plate is subjected to upward elastic force by the second spring, and then the stamping rod is driven to move upward by the second end plate, and then the top plate, the middle plate, the assembly plate and the upper knife are sequentially driven, so that the assembly plate and the upper knife are separated from the chip placed on the bottom plate.

[0022] Further, the top plate and the middle plate are elastically connected by a first spring, the top of the top plate is connected with a first limiting rod, the first limiting rod penetrates through the middle plate, and the first spring is sleeved on the first limiting rod.

[0023] Through the first spring, when stamping downward, buffering effect is played, and the assembly plate avoids damaging the chip.

[0024] Further, the stamping device further comprises a base, the limiting column and the main rod are fixed on the base, and the bottom plate is arranged on the base.

[0025] The main rod and the limiting column are both fixed on the base, so that the stability of the device as a whole is ensured.

[0026] Further, the bottom plate is further provided with a limiting piece.

[0027] When stamping downward, the limiting piece limits the height of the assembly plate descending, so that the assembly plate avoids damaging the chip due to excessive downward elastic force.

[0028] Further, the assembly workpiece is provided with two, the bottom of the assembly plate is provided with two symmetrically distributed grooves, and the two sides of each groove are provided with a knife groove penetrating through the assembly plate and used for longitudinal movement of the upper knife.

[0029] Through the structural design, the several chips arranged on the assembly workpiece are processed for rework, and the rework efficiency is improved.

[0030] Further, the bottom plate is of a concave structure, the assembly workpiece is of a U-shaped structure and is arranged in the inner concave portion of the bottom plate, two parallel lower knives are arranged on the assembly workpiece, the lower knives are arranged staggeredly with the upper knives, and the planes where the lower knives are located are between the planes where the upper knives are located.

[0031] Based on the structure, the chip arranged on the assembly workpiece is processed for rework.

[0032] The beneficial effects of the utility model are as follows:

[0033] 1. The utility model discloses a stamping device that drives the correction device to move downward, utilizes the upper knife to process the pins of the chip arranged on the assembly workpiece for rework, the assembly workpiece can place multiple chips, and after the upper knife is stamped downward once, synchronous rework processing is completed, after processing is completed, the correction device is driven by the stamping device to move upward, and the chip is separated, efficient processing of the product to be reworked is realized, and through mechanical processing operation, the angle radian of the product during rework processing is more accurate compared with manual processing.

[0034] 2. The bottom of the assembly plate is provided with a groove matched with the chip body, the middle plate and the top plate are connected through the first spring buffer, and the limiting piece is arranged on the bottom plate, so that the safety of the chip product is ensured during stamping rework processing. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is the device overall structure schematic view of the utility model.

[0036] Figure 2 It is the correction device section structure schematic view of the utility model.

[0037] Figure 3 It is the assembly work piece place structure schematic view of the utility model embodiment 1.

[0038] Figure 4 It is the assembly board structure schematic view of the utility model.

[0039] Figure 5 It is the correction device structure schematic view of the utility model embodiment 2.

[0040] The figure mark explanation: 1-main rod, 2-first end plate, 3-second spring, 4-second limit rod, 5-second end plate, 6-punching rod, 7-pressing rod, 8-fixed block, 9-limit column, 10-base, 11-top plate, 12-middle plate, 13-assembly board, 14-assembly work piece, 15-limit piece, 16-bottom plate, 17-upper cutter, 18-groove, 19-cutter groove, 20-first spring, 21-first limit rod, 22-lower cutter, 23-punching plate. DETAILED DESCRIPTION

[0041] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0042] In the description of the embodiments of the utility model, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the utility model product is used, or the orientation or positional relationship commonly understood by those skilled in the art, or the orientation or positional relationship commonly placed when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the indicated device or element having a specific orientation, being constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used for differentiation in description, and cannot be understood as indicative or suggestive of relative importance.

[0043] In the description of the embodiments of the utility model, still need explaining, unless having explicit stipulation and limitation, term " set " " connection " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be direct connection, also can be indirectly connected through intermediate medium. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.

[0044] Embodiment 1

[0045] Embodiment 1 of the utility model discloses a chip pin rework correction device, as shown in Figure 1 Specifically as follows:

[0046] It comprises a punching device and a correction device.

[0047] As shown in Figure 2 The correction device comprises a top plate 11, a middle plate 12 and a bottom plate 16; the top plate 11 is elastically connected with the middle plate 12, the bottom plate 16 is arranged below the middle plate 12, the bottom of the middle plate 12 is provided with an assembly plate 13, the bottom of the top plate 11 is provided with an upper knife 17, the upper knife 17 penetrates through the middle plate 12 and the assembly plate 13, and the middle plate 12 is fixedly connected with the assembly plate 13; the top of the top plate 11 is fixedly connected with the punching device; the punching device punches the top plate 11 along the direction perpendicular to the plate body.

[0048] The bottom plate 16 is provided with an assembly workpiece 14, the bottom of the assembly plate 13 is provided with a groove 18, the groove 18 is matched with the main part of the chip to be reworked and corrected, and the assembly workpiece 14 is located below the groove 18 of the assembly plate 13.

[0049] As a preferred embodiment, the punching device comprises a main rod 1, a fixed block 8, a punching plate 23, a punching rod 6 and a pressing rod 7.

[0050] The fixed block 8 is fixedly connected with the main rod 1, the punching rod 6 penetrates through the fixed block 8 along the direction of the main rod 1, the punching plate 23 is fixedly connected vertically at the bottom end of the punching rod 6, the top plate 11 is fixedly connected with the punching plate 23, the pressing rod 7 is arranged on one side of the fixed block 8 and connected with the punching rod 6, the punching rod 6 is driven downward by the pressing rod 7 to be punched downward, and the punching plate 23 is sleeved with a limiting column 9.

[0051] The top end of the punching rod 6 is fixedly connected with a second end plate 5, and the second end plate 5 is elastically connected with the fixed block 8.

[0052] As a preferred embodiment, the top of the main rod 1 is fixedly connected with a first end plate 2.

[0053] As a preferred embodiment, the main rod 1 is provided with two, and the fixing block 8 is T-shaped structure, and the transverse end of the T-shaped structure is sleeved on the two main rods 1.

[0054] Specifically, the fixing block 8 can be fixed by bolts after being adjusted to a suitable height on the main rod 1, and the specific fixing mode is not limited here.

[0055] As a preferred embodiment, the second end plate 5 and the fixing block 8 are elastically connected through the second spring 3, the second end plate 5 is further provided with a second limiting rod 4 fixedly connected, the fixing block 8 is provided with a limiting hole matched with the limiting column 9, the limiting rod can slide up and down in the limiting hole, and the second spring 3 is sleeved on the second limiting rod 4.

[0056] As a preferred embodiment, the top plate 11 and the middle plate 12 are elastically connected through the first spring 20, the top of the top plate 11 is connected with a first limiting rod 21, the first limiting rod 21 penetrates through the middle plate 12, and the first spring 20 is sleeved on the first limiting rod 21.

[0057] Specifically, the first limiting rod 21 is provided with four and is distributed at the four corners of the top plate 11.

[0058] As a preferred embodiment, the stamping device further comprises a base 10, the limiting column 9 and the main rod 1 are fixed on the base 10, and the bottom plate 16 is arranged on the base 10.

[0059] As a preferred embodiment, the bottom plate 16 is further provided with a limiting piece 15.

[0060] Specifically, the limiting piece 15 is distributed at the four corners of the bottom plate 16 and is located below the four corners of the middle plate 12.

[0061] As shown in Figure 3 The assembly workpiece 14 is provided with two;

[0062] As shown in Figure 4 The bottom of the assembly plate 13 is provided with two symmetrical recesses 18, and each recess 18 is provided with a knife groove 19 penetrating through the assembly plate 13 for longitudinal movement of the upper knife 17.

[0063] Specifically, the assembly workpiece 14 is a convex structure, the chip to be reworked and corrected is placed on the assembly workpiece 14, the main body of the chip is placed above the convex structure, the pin is located on both sides, and multiple chips can be arranged and placed on the assembly workpiece 14.

[0064] Based on the above device, the chip to be reworked is placed on two assembly parts 14 on the base plate 16. Then, the pressure rod 7 is pressed, causing the stamping rod 6 to move downward, pushing the stamping plate 23 downward along the limiting post 9. This, in turn, moves the top plate 11, middle plate 12, assembly plate 13, and upper blade 17 downward. When the chip body is placed in the groove 18 of the assembly plate 13, the four corners of the assembly plate 13 also abut against the limiting part 15. At this time, as the stamping rod 6 moves downward, the top plate 11 and upper blade 17 continue to move downward. The spring between the top plate 11 and the middle plate 12 is compressed. The upper blade 17 extends out of the blade groove 19 of the assembly plate 13 and contacts the chip's pins to correct the pins. Finally, the pressure rod 7 is released, and the compressed second spring 3 begins to rebound upward, causing the stamping rod 6 to move upward. This, in turn, moves the stamping plate 23, top plate 11, upper blade 17, middle plate 12, and assembly plate 13 upward, allowing the reworked chip to be removed.

[0065] Example 2

[0066] Embodiment 2 of this utility model discloses a chip pin rework correction device, such as... Figure 1 As shown, the details are as follows:

[0067] Includes stamping equipment and correction equipment;

[0068] like Figure 2 As shown, the correction device includes a top plate 11, a middle plate 12, and a bottom plate 16; the top plate 11 is elastically connected to the middle plate 12, the bottom plate 16 is placed below the middle plate 12, the bottom of the middle plate 12 is provided with an assembly plate 13, the bottom of the top plate 11 is provided with an upper blade 17, the upper blade 17 penetrates the middle plate 12 and the assembly plate 13, the middle plate 12 and the assembly plate 13 are fixedly connected; the top of the top plate 11 is fixedly connected to the stamping device; the stamping device stamps the top plate 11 in a direction perpendicular to the plate body;

[0069] The base plate 16 is provided with an assembly workpiece 14, and the bottom of the assembly plate 13 is provided with a groove 18. The groove 18 is adapted to the main body of the chip to be reworked and corrected, and the assembly workpiece 14 is located below the groove 18 of the assembly plate 13.

[0070] In a preferred embodiment, the stamping device includes a main rod 1, a fixing block 8, a stamping plate 23, a stamping rod 6, and a pressure rod 7;

[0071] The fixed block 8 is fixedly connected with the main rod 1, the stamping rod 6 penetrates through the fixed block 8 along the direction of the main rod 1, the stamping plate 23 is fixedly connected at the bottom end of the stamping rod 6, the top plate 11 is fixedly connected with the stamping plate 23, the pressing rod 7 is arranged on one side of the fixed block 8 and connected with the stamping rod 6, and the stamping rod 6 is driven downward by the pressing rod 7, and the stamping plate 23 is sleeved with the limiting column 9.

[0072] The top end of the stamping rod 6 is fixedly connected with the second end plate 5, and the second end plate 5 is elastically connected with the fixed block 8.

[0073] As a preferred embodiment, the top of the main rod 1 is fixedly connected with the first end plate 2.

[0074] As a preferred embodiment, the main rod 1 is provided with two, and the fixed block 8 is in a T-shaped structure, and one end of the T-shaped structure is sleeved on the two main rods 1.

[0075] Specifically, the fixed block 8 can be fixed by bolts after being adjusted to an appropriate height on the main rod 1, and the specific fixing mode is not limited here.

[0076] As a preferred embodiment, the second end plate 5 is elastically connected with the fixed block 8 through the second spring 3, the second end plate 5 is further provided with a second limiting rod 4 fixedly connected therewith, the fixed block 8 is provided with a limiting hole matched with the limiting column 9, the limiting rod can slide up and down in the limiting hole, and the second spring 3 is sleeved on the second limiting rod 4.

[0077] As a preferred embodiment, the top plate 11 is elastically connected with the middle plate 12 through the first spring 20, the top of the top plate 11 is connected with a first limiting rod 21, the first limiting rod 21 penetrates through the middle plate 12, and the first spring 20 is sleeved on the first limiting rod 21.

[0078] Specifically, the first limiting rod 21 is provided with four and is arranged at four corners of the top plate 11.

[0079] As a preferred embodiment, the stamping device further comprises a base 10, the limiting column 9 and the main rod 1 are fixed on the base 10, and the bottom plate 16 is arranged on the base 10.

[0080] As a preferred embodiment, the bottom plate 16 is further provided with a limiting piece 15.

[0081] Specifically, the limiting piece 15 is arranged at four corners of the bottom plate 16 and is located below four corners of the middle plate 12.

[0082] As a preferred embodiment, as Figure 5As shown, the bottom plate 16 is a concave structure, the assembly workpiece 14 is a U-shaped structure, which is arranged in the inner recess of the bottom plate 16, and two parallel lower knives 22 are arranged on the assembly workpiece 14, the lower knives 22 are staggered with the upper knives 17, and the plane where the lower knives 22 are located is between the planes where the upper knives 17 are located.

[0083] Specifically, the chip body is arranged between the two lower knives 22, the pins on both sides are arranged on the two lower knives 22 respectively, and the upper knives 17 are arranged in a group and staggered with the lower knives 22, so that the pins are corrected when the upper knives 17 are pressed outside the corresponding lower knives 22.

[0084] Based on the above device, the chip to be reworked is placed on the two assembly workpieces 14 on the bottom plate 16, then the pressing rod 7 is pressed, so that the stamping rod 6 moves downward, the stamping plate 23 moves downward along the limiting column 9, and then the top plate 11, the middle plate 12, the assembly plate 13 and the upper knife 17 move downward, when the bottom end of the assembly plate 13 contacts the lower knife 22, the four corners of the assembly plate 13 also abut against the limiting piece 15, at this time, with the downward movement of the stamping rod 6, the top plate 11 and the upper knife 17 continue to move downward, the spring between the top plate 11 and the middle plate 12 is compressed, the upper knife 17 contacts the pin of the chip through the knife groove 19 of the assembly plate 13, the correction of the pin is realized through the staggered arrangement of the upper knife 17 and the lower knife 22, finally, the pressing rod 7 is released, the second spring 3 which is compressed begins to rebound upward, so that the stamping rod 6 moves upward, and then drives the stamping plate 23, the top plate 11, the upper knife 17, the middle plate 12 and the assembly plate 13 to move upward, so that the chip which is reworked can be taken out.

[0085] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation according to the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A chip pin rework correction device, comprising: The punch device and the correction device are included. The correction device includes a top plate, a middle plate and a bottom plate; the top plate is elastically connected with the middle plate; the bottom of the middle plate is provided with an assembly plate; the bottom of the top plate is provided with an upper cutter; the upper cutter penetrates the middle plate and the assembly plate; the top of the top plate is fixedly connected with the punch device; the punch device punches the top plate along the direction perpendicular to the plate body; The bottom plate is provided with an assembly workpiece; the bottom of the assembly plate is provided with a groove; the groove is adapted to the main body part of the chip to be reworked; and the assembly workpiece is located below the groove of the assembly plate.

2. The chip pin rework correction apparatus of claim 1, wherein The punch device includes a main rod, a fixed block, a punch plate, a punch rod and a pressing rod. The fixed block is fixedly connected with the main rod; the punch rod penetrates the fixed block along the direction of the main rod; the punch plate is fixedly connected perpendicularly at the bottom end of the punch rod; the top plate is fixedly connected with the punch plate; the pressing rod is connected with the punch rod; and the punch plate is sleeved with a limiting column. The top end of the punch rod is fixedly connected with a second end plate; and the second end plate is elastically connected with the fixed block.

3. The chip pin rework correction apparatus of claim 2, wherein The top of the main rod is fixedly connected with a first end plate.

4. The chip pin rework correction apparatus of claim 3, wherein The main rod is provided with two main rods; and the fixed block is in a T-shaped structure, with one end of the horizontal direction of the T-shaped structure sleeved on the two main rods.

5. The chip pin rework correction apparatus of claim 2, wherein The second end plate is elastically connected with the fixed block through a second spring; the second end plate is further provided with a second limiting rod fixedly connected therewith; the fixed block is provided with a limiting hole adapted to the limiting column; and the second spring is sleeved on the second limiting rod.

6. The chip pin rework correction apparatus of claim 1, wherein The top plate is elastically connected with the middle plate through a first spring; the top of the top plate is connected with a first limiting rod; the first limiting rod penetrates the middle plate; and the first spring is sleeved on the first limiting rod.

7. The chip pin rework correction apparatus of claim 2, wherein The punch device further includes a base; the limiting column and the main rod are fixed on the base; and the bottom plate is arranged on the base.

8. The chip pin rework correction apparatus of claim 1, wherein The bottom plate is further provided with a limiting member.

9. The chip pin rework modification apparatus of any of claims 1-8, wherein, The assembly workpiece is provided with two assembly workpieces; the bottom of the assembly plate is provided with two symmetrical grooves; and each groove is provided with a cutter groove penetrating the assembly plate and used for the longitudinal movement of the upper cutter.

10. The chip pin rework modification apparatus of any of claims 1-8, wherein, The bottom plate is in a concave structure; the assembly workpiece is in a U-shaped structure and arranged in the inner concave part of the bottom plate; the assembly workpiece is provided with two parallel lower cutters; the lower cutters are staggered with the upper cutter; and the plane where the lower cutters are located is between the planes where the upper cutters are located.

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