Device level package automatic punching device

Abstract

The utility model discloses device level package body automatic punching equipment, including platen, poking mechanism, two pass material platform and two floating mechanism, and poking mechanism includes translation drive part, connecting rod, concave movable part and a plurality of poking claws, and translation drive part is located on platen and is connected connecting rod, and concave movable part is connected connecting rod and can be set up lift relative to connecting rod, and concave movable part includes middle pole and two edge poles of opposite setting, and middle pole is connected two edge poles respectively, and poking claw is connected two edge poles respectively, pass material platform is located on platen, and pass material platform has pass material passageway, and pass material platform can lift and be equipped with the lifting frame, and the lifting frame is equipped with the positioning column of pass material passageway, two floating mechanism and two pass material platform one to one corresponding setting, and floating mechanism includes two top resistance frame of opposite setting and the lifting drive assembly of connecting top resistance frame and platen, and top resistance frame is equipped with the sliding pair of connecting edge pole. The utility model discloses device level package body automatic punching equipment production efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of punching equipment technology, and in particular to an automatic punching equipment for device-level packages. Background Technology

[0002] After the device-level package (DLP) is manufactured, it needs to be punched off the lead frame using a punching machine. Existing punching machines generally use a step-by-step intermittent operation of "punch + feed claw". The feed claw needs to perform both lateral stepping and lifting to exit the lead frame for subsequent reset. Therefore, a set of drive components must be set in two mutually perpendicular directions. At the same time, an additional lifting drive component is required on the feeding side and the output side to drive the positioning post to insert or exit the lead frame, so as to ensure that the feed claw can be smoothly reinserted into the lead frame for re-feeding. Therefore, the existing DLP punching machine requires at least four independent drive sources. The structure is scattered, the control cycle is long, and the sequential start and stop of each drive component makes it impossible to further compress the punching cycle, which has become a bottleneck restricting the improvement of production capacity. Utility Model Content

[0003] The technical problem solved by this utility model is to provide an automatic punching equipment for device-level packages with high production efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an automatic punching and cutting equipment for device-level packages, comprising:

[0005] tabletop;

[0006] The material feeding mechanism includes a translation drive, a connecting rod, a concave movable part and several feeding claws. The translation drive is mounted on the platform and connected to the connecting rod. The concave movable part is connected to the connecting rod and can be raised and lowered relative to the connecting rod. The concave movable part includes a central rod and two oppositely arranged side rods. The central rod is connected to the two side rods respectively, and the feeding claws are connected to the two side rods respectively.

[0007] Two material conveying platforms are set on the platform. Each material conveying platform has a material conveying channel. A lifting frame is installed on the material conveying platform, and a positioning column that can pass through the material conveying channel is provided on the lifting frame.

[0008] Two floating mechanisms are provided, each corresponding to one of the two material feeding platforms. Each floating mechanism includes two opposing top abutment frames and a lifting drive assembly connecting the top abutment frames and the platform. The top abutment frames are provided with sliding pairs connecting the side rods. The material feeding claws can extend between the two top abutment frames. The top abutment frames are used to drive the lifting frame to rise and fall.

[0009] In one embodiment, the device further includes a pressing mechanism and a lower die disposed on the platform. The lower die is located between the two feed tables. The lower die has a clearance groove for avoiding the feeding claw. The pressing mechanism includes a connected pressing drive assembly and a punch. The punch is located directly above the lower die and is provided with a positioning pin.

[0010] In one embodiment, the two floating mechanisms operate synchronously.

[0011] In one embodiment, the top abutment frame is generally U-shaped, the top abutment frame has an upper connecting rod and a lower connecting rod, the sliding pair is disposed on the lower connecting rod, the upper connecting rod contacts the lifting frame, and the side rod passes through the space between the upper connecting rod and the lower connecting rod.

[0012] In one embodiment, the lifting drive assembly includes a rotary motor, a rotary rod, an eccentric wheel, a transmission component, a driven rod, and two top abutment frames. The two top abutment frames correspond one-to-one with the two top abutment frames and are in contact with them. The top abutment frames are vertically and vertically mounted on the platform. The driven rod is rotatably sleeved on the transmission component and connected to the two top abutment frames. The transmission component is rotatably sleeved on the eccentric wheel. The eccentric wheel is fixed on the rotary rod, and the rotary rod is connected to the rotary motor.

[0013] In one embodiment, the top abutment frame includes a crossbar and a plurality of uprights, the driven rod and each of the uprights are connected to the crossbar, and the top of the uprights contacts the top abutment frame.

[0014] In one embodiment, the platform is provided with a guide sleeve adapted to the upright.

[0015] In one embodiment, the driven rod is indirectly connected to the transmission member via a first bearing, and the eccentric wheel is indirectly connected to the transmission member via a second bearing.

[0016] In one embodiment, the feed platform is further provided with a reset member, which connects the feed platform and the lifting frame to drive the lifting frame to press against the top abutment frame.

[0017] In one embodiment, the feed platform is provided with a clearance opening for avoiding the feeding claw, the clearance opening being located below the feed channel and communicating with the feed channel.

[0018] The beneficial effects of this utility model are as follows: This automatic punching equipment for device-level packages has a novel structure. By entrusting the lifting action of the concave movable part to the lifting drive component of the floating mechanism, the lateral stepping and vertical clearance of the feeding claw are completed by the translation drive component and the lifting drive component respectively. There is no need to set up an independent lifting drive component on the concave movable part. Thus, the traditional structure that requires four sets of drive sources is simplified to only one translation drive component and two sets of lifting drive components, for a total of three drive sources. This realizes the synchronous linkage of each action in the entire process of feeding, positioning, punching, and resetting, shortens the control cycle, and compresses the punching cycle, thereby improving the production efficiency of device-level packages. At the same time, since the top frame directly pushes the lifting frame on the feed table during the lifting process, the insertion and withdrawal action of the positioning column is synchronized with the lifting of the feeding claw. This reduces the installation space and wiring complexity required for the separate drive of the positioning column, making the equipment structure more compact, easier to maintain, and more stable and reliable in overall operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 Schematic diagram of the overall structure of the automated punching equipment for device-level packages Figure 1 ;

[0021] Figure 2 Schematic diagram of the overall structure of the automated punching equipment for device-level packages Figure 2 ;

[0022] Figure 3 A schematic diagram of part of the structure of an automated punching equipment for device-level packages. Figure 1 ;

[0023] Figure 4 A schematic diagram of part of the structure of an automated punching equipment for device-level packages. Figure 2 ;

[0024] Figure 5 A schematic diagram of the lifting drive assembly in an automated punching equipment for device-level packages;

[0025] Figure 6 This is a timing diagram for an automated punching equipment for device-level packages.

[0026] Explanation of icon numbers:

[0027] 1. Platform; 11. Guide sleeve;

[0028] 2. Feeding mechanism; 21. Translation drive component; 22. Connecting rod; 23. Concave moving component; 231. Center rod; 232. Side rod; 24. Feeding claw;

[0029] 3. Pressing mechanism; 31. Pressing drive assembly; 32. Punch;

[0030] 4. Lower mold;

[0031] 5. Material conveying platform; 51. Material conveying channel; 52. Lifting frame; 521. Positioning column; 53. Clearance opening;

[0032] 6. Floating mechanism; 61. Top support frame; 611. Upper connecting rod; 612. Lower connecting rod; 62. Lifting drive assembly; 621. Rotary motor; 622. Rotating rod; 623. Eccentric wheel; 6231. Second bearing; 624. Transmission component; 625. Driven rod; 6251. First bearing; 626. Top support frame; 6261. Crossbar; 6262. Vertical rod; 63. Sliding pair. Detailed Implementation

[0033] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0037] Furthermore, if the meaning of "and / or" in the entire text is to include three parallel solutions, taking "and A / or B" as an example, it includes solution A, solution B, and a solution that simultaneously satisfies both A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] Example 1

[0040] Embodiment 1 of this utility model is: an automatic punching device for device-level packages, used to punch off the device-level packages on the lead frame.

[0041] Please refer to Figures 1 to 5The automatic punching equipment for device-level packages includes a platform 1, a feeding mechanism 2, a pressing mechanism 3, a lower die 4, two feeding tables 5, and two floating mechanisms 6. The feeding mechanism 2 includes a translation drive 21, a connecting rod 22, a concave movable part 23, and several feeding claws 24. The feeding claws 24 are used to move the lead frame. The translation drive 21 is mounted on the platform 1 and connected to the connecting rod 22. The translation drive 21 can be a cylinder, an electric push rod, etc. The concave movable part 23 is connected to the connecting rod 22 and can be raised and lowered relative to the connecting rod 22. The device includes a central rod 231 and two oppositely arranged side rods 232. The central rod 231 is connected to the two side rods 232 respectively. The feeding claws 24 are also connected to the two side rods 232 respectively. The middle part of the central rod 231 is connected to the connecting rod 22 and can be raised and lowered relative to the connecting rod 22. The feeding platform 5 is set on the platform 1. One feeding platform 5 is the feeding side and the other feeding platform 5 is the discharging side. The feeding platform 5 has a feeding channel 51 for the lead frame and device-level package to pass through. A lifting frame 52 is raised and lowered on the feeding platform 5. The lifting frame 52 has a passage for the lead frame and device-level package to pass through. The positioning post 521 of the material passage 51 is used to position the lead frame area in the material passage 51; two floating mechanisms 6 are correspondingly arranged with two material passing platforms 5, and the floating mechanism 6 includes two opposing top abutment frames 61 and a lifting drive assembly 62 connecting the top abutment frames 61 and the platform 1. The top abutment frames 61 are provided with a sliding pair 63 connecting the side rod 232. The material feeding claw 24 can extend between the two top abutment frames 61. The top abutment frames 61 are used to drive the lifting frame 52 to rise and fall; the pressing mechanism 3 and the lower die 4 are respectively located in The table 1 and the lower die 4 are located between the two feed tables 5. The lower die 4 has a clearance groove for avoiding the feeding claw 24. The pressing mechanism 3 includes a connected pressing drive assembly 31 and a punch 32. The punch 32 is located directly above the lower die 4 and is provided with a positioning pin. In this embodiment, the pressing drive assembly 31 includes a servo motor, a reducer, a power transmission mechanism and a punching spindle connected in sequence. The punching spindle is connected to the punch 32, thereby converting the rotational motion of the servo motor into the reciprocating motion of the punch 32.

[0042] The two floating mechanisms 6 operate synchronously, and the positioning columns 521 of the lifting frames 52 on the two feeding platforms can be inserted into or withdrawn from the lead frame at the same time. The lead frame is subjected to uniform force, avoiding jamming or warping caused by asynchronous lifting. This ensures that the long lead frame remains flat during high-speed stepping, providing stable conditions for continuous high-speed punching.

[0043] Preferably, the top abutment frame 61 is generally U-shaped, and has an upper connecting rod 611 and a lower connecting rod 612. The sliding pair 63 is disposed on the lower connecting rod 612. The upper connecting rod 611 contacts the lifting frame 52, and the side rod 232 passes between the upper connecting rod 611 and the lower connecting rod 612. The sliding pair 63 includes a matching slide rail and a slider. The slide rail is fixed on the lower connecting rod 612, and the slider is fixed on the side rod 232. The U-shaped top abutment frame 61 itself forms a rigid force-bearing closed loop, which has good structural stability and allows the overall equipment to be more compact.

[0044] In this embodiment, the lifting drive assembly 62 includes a rotary motor 621, a rotating rod 622, an eccentric wheel 623, a transmission component 624, a driven rod 625, and two top abutment frames 626. The two top abutment frames 626 correspond one-to-one with the two top abutment frames 61 and are in contact with the top abutment frames 61. The top abutment frames 626 are rotatably mounted on the platform 1. The driven rod 625 is rotatably sleeved on the transmission component 624 and connected to the two top abutment frames 626. The transmission component 624 is rotatably sleeved on the eccentric wheel 623. The eccentric wheel 623 is fixed on the rotating rod 622. The rotating rod 622 is connected to the rotary motor 621. The power mechanism consisting of a rotary motor 621, an eccentric wheel 623, a transmission component 624, and a driven rod 625 converts the rotary input into the synchronous lifting of two top support frames 626. Only one rotary motor 621 is needed to drive the two top support frames 61, which reduces the number of motors and wiring, concentrates maintenance points, and reduces the difficulty of synchronous debugging of multiple motors.

[0045] Specifically, the top support frame 626 includes a crossbar 6261 and multiple uprights 6262. The driven rod 625 and each of the uprights 6262 are connected to the crossbar 6261, and the top of the uprights 6262 contacts the top support frame 61. The "comb-like" top support frame 626, consisting of the crossbar 6261 and multiple uprights 6262, distributes the concentrated force of the driven rod 625 to multiple support points of the top support frame 61, avoiding tilting of the top support frame 61 due to single-point lifting. The uprights 6262 form line contact with the top support frame 61, reducing lifting friction, making the movement smoother, and extending the service life of the mechanism.

[0046] In a preferred embodiment, the platform 1 is provided with a guide sleeve 11 that is adapted to the upright 6262. The guide sleeve 11 radially limits the upright 6262, which can prevent the upright 6262 from swinging due to the lateral force generated by the eccentric wheel 623 when rotating at high speed. This keeps the lifting direction of the top frame 61 perpendicular to the platform 1, and the alignment of the positioning column 521 and the lead frame is continuously guaranteed, which helps to reduce positioning errors.

[0047] The driven rod 625 is indirectly connected to the transmission component 624 via a first bearing 6251, and the eccentric wheel 623 is indirectly connected to the transmission component 624 via a second bearing 6231. The first bearing 6251 and the second bearing 6231 decompose the compound motion generated by the eccentric wheel 623 into pure lifting displacement, avoiding sliding friction between the transmission component 624 and the driven rod 625, reducing temperature rise and wear, enabling the mechanism to operate at higher speeds for extended periods, and providing conditions for shortening the lifting cycle.

[0048] Optionally, the feed table 5 is further provided with a reset component, which connects the feed table 5 and the lifting frame 52 to drive the lifting frame 52 to press against the top abutment frame 61. The reset component may be a spring or the like. The reset component continuously presses the lifting frame 52 against the top abutment frame 61, eliminating the assembly gap between the two. When the top abutment frame 61 descends, the lifting frame 52 can immediately follow and fall, and the positioning post 521 can be quickly inserted into the lead frame, avoiding any gaps in the positioning of the lead frame.

[0049] The feed table 5 is provided with a clearance opening 53 for avoiding the feeding claw 24. The clearance opening 53 is located below the feed channel 51 and is connected to the feed channel 51 to ensure that the feeding claw 24 can be smoothly inserted into the lead frame.

[0050] The working process of the automated punching equipment for this device-level package is briefly described as follows: A unified clock cycle of 0°-360° is used, and all mechanisms operate in coordination (timing diagram shown). Figure 6 As shown):

[0051] From 0° to 40°, the punch rises at a constant speed from the lower limit position; the lifting drive assembly lifts the concave movable part as a whole through the top frame, and the feeding claw rises at a constant speed from the lower limit position along a straight line. At the same time, the translation drive assembly drives it to move to the left, reaching the left limit position at 40°.

[0052] From 40° to 110°, the punch continues to rise at a constant speed. At 90°, the positioning pin on the punch disengages from the lead wire frame. The feeding claw remains stationary at its left limit position and continues to rise at a constant speed. At 110°, the feeding claw rises to its upper limit position.

[0053] From 110° to 220°, the punch continues to rise at a constant speed, reaching the upper limit position at 180°; then it immediately turns to descend at a constant speed; the feeding claw maintains the upper limit position, while the translation drive pushes it to move to the right at a constant speed, reaching the right limit position at 220°, sending the device-level package to be punched on the lead frame into the punching station.

[0054] 220°–250°, the punch continues to descend at a constant speed; the material-pulling claw remains at its upper limit position, ready to give way; at 250°, the lifting drive assembly drives the top frame to descend, the concave moving part descends synchronously, and the material-pulling claw begins to descend in a straight line at a constant speed.

[0055] At 250°–270°, the feeding claw descends at a constant speed; the punch continues to descend, and at 270°, the positioning pin contacts the lead frame, achieving precise positioning, while the feeding claw has not yet completely detached from the lead frame.

[0056] From 270° to 360°, the punch continues to descend to the lower limit position, completing the punching; the feed claw descends to the lower limit position, and at the same time, the translation drive starts at 280°, driving the feed claw to begin the left return stroke, but it has not yet returned to the left limit position at 360°; the positioning pin positions the lead frame throughout the entire 270°–360° range to ensure cutting accuracy.

[0057] Thus, the entire process of "returning material receiving - feeding - yielding - punching - unloading" is completed within a 360° cycle, repeating continuously.

[0058] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An automatic punching and cutting equipment for device-level packages, characterized in that, include tabletop; The material feeding mechanism includes a translation drive, a connecting rod, a concave movable part and several feeding claws. The translation drive is mounted on the platform and connected to the connecting rod. The concave movable part is connected to the connecting rod and can be raised and lowered relative to the connecting rod. The concave movable part includes a central rod and two oppositely arranged side rods. The central rod is connected to the two side rods respectively, and the feeding claws are connected to the two side rods respectively. Two material conveying platforms are set on the platform. Each material conveying platform has a material conveying channel. A lifting frame is installed on the material conveying platform, and a positioning column that can pass through the material conveying channel is provided on the lifting frame. Two floating mechanisms are provided, each corresponding to one of the two material feeding platforms. Each floating mechanism includes two opposing top abutment frames and a lifting drive assembly connecting the top abutment frames and the platform. The top abutment frames are provided with sliding pairs connecting the side rods. The material feeding claws can extend between the two top abutment frames. The top abutment frames are used to drive the lifting frame to rise and fall.

2. The automatic punching equipment for device-level packages according to claim 1, characterized in that, It also includes a pressing mechanism and a lower die disposed on the platform. The lower die is located between the two feed tables. The lower die has a clearance groove for avoiding the feeding claw. The pressing mechanism includes a connected pressing drive assembly and a punch. The punch is located directly above the lower die and is provided with a positioning pin.

3. The automatic punching equipment for device-level packages according to claim 1, characterized in that, The two floating mechanisms operate in sync.

4. The automatic punching equipment for device-level packages according to claim 1, characterized in that, The top support frame is generally U-shaped, and has an upper connecting rod and a lower connecting rod. The sliding pair is provided on the lower connecting rod, the upper connecting rod contacts the lifting frame, and the side rod passes through the space between the upper connecting rod and the lower connecting rod.

5. The automatic punching equipment for device-level packages according to claim 1, characterized in that, The lifting drive assembly includes a rotary motor, a rotating rod, an eccentric wheel, a transmission component, a driven rod, and two top abutment frames. The two top abutment frames correspond one-to-one with the two top abutment frames and are in contact with the top abutment frames. The top abutment frames are liftable and pass through the platform. The driven rod is rotatably sleeved on the transmission component and connected to the two top abutment frames. The transmission component is rotatably sleeved on the eccentric wheel. The eccentric wheel is fixed on the rotating rod. The rotating rod is connected to the rotary motor.

6. The automatic punching equipment for device-level packages according to claim 5, characterized in that, The top support frame includes a crossbar and multiple uprights. The driven rod and each of the uprights are connected to the crossbar, and the top of the uprights contacts the top support frame.

7. The automatic punching equipment for device-level packages according to claim 6, characterized in that, The platform is provided with a guide sleeve that is compatible with the upright.

8. The automatic punching equipment for device-level packages according to claim 5, characterized in that, The driven rod is indirectly connected to the transmission component via a first bearing, and the eccentric wheel is indirectly connected to the transmission component via a second bearing.

9. The automatic punching equipment for device-level packages according to claim 1, characterized in that, The material conveying platform is also provided with a reset component, which connects the material conveying platform and the lifting frame to drive the lifting frame to press against the top abutment frame.

10. The automatic punching equipment for device-level packages according to claim 1, characterized in that, The feed platform is provided with a clearance opening for avoiding the feeding claw. The clearance opening is located below the feed channel and is connected to the feed channel.

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