A lead frame rectification detection device for TOLL package processing

Abstract

This utility model provides a lead frame straightening and inspection device for TOLL packaging processing, relating to the field of TOLL packaging technology. It includes a mounting frame, a width adjustment mechanism, a front-to-back moving mechanism, a left-to-right moving mechanism, a flipping inspection mechanism, and a lead frame fixing frame; a pneumatic adsorption device is also included. The pneumatic adsorption device is mounted on the connecting frame of the lead frame fixing frame and includes a cylinder, a push rod, a piston, a suction cup, a fixing frame, and a tray. Four fixing frames are provided. This utility model solves the problems of lead frame fixing frames using screws and nuts for manual adjustment, which easily crushes thin leads and affects flatness inspection results. Since both the fixing frame and fixing plate are solid, relying solely on screws for locking can easily lead to excessive local pressure on the frame edges, causing micro-deformation of the lead frame. Furthermore, when the lead frame fixing frame is compatible with different sized frames, the screws need to be repeatedly tightened, affecting work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of TOLL packaging technology, specifically to a lead frame straightening and detection device for TOLL packaging processing. Background Technology

[0002] TOLL packaging is a leadless surface mount technology designed for high power density applications. Its processing requires optimization of the process based on its structural characteristics. The lead frame correction and inspection device for TOLL packaging is an automated device designed specifically for detecting deformation and defects of the lead frame in the TOLL packaging process. This device solves the shortcomings of traditional inspection methods in terms of accuracy, efficiency and local defect identification through multi-dimensional precision adjustment and visual inspection technology.

[0003] Chinese patent CN116626063A discloses a lead frame straightening and inspection device for TOLL packaging processing. The key technical features include: a mounting frame, a width adjustment mechanism, a front-to-back moving mechanism, a left-to-right moving mechanism, and a lead frame fixing frame. The mounting frame is vertically arranged. The front-to-back moving mechanism is located at the bottom of the mounting frame and slides in cooperation with it. The width adjustment mechanism is mounted on the mounting frame and slides in cooperation with it. Four left-to-right moving mechanisms are provided, each mounted on the width adjustment mechanism and sliding in cooperation with it. Each left-to-right moving mechanism has a flipping detection mechanism. The lead frame fixing frame is vertically arranged beside the front-to-back moving mechanism. This invention allows for the adjustment of the detection head position as needed, enabling inspection of lead frames at different locations and improving the applicability of lead frame inspection.

[0004] The above technical solution has the following drawbacks in use: The lead frame fixing bracket uses screws and nuts for manual adjustment, which can easily crush thin leads and affect the flatness test results. Both the fixing frame and the fixing plate are solid and are locked only by screws, which can easily lead to excessive local pressure on the edge of the frame. The pressure concentration at the edge of the solid fixing frame (local pressure >15kPa) causes micro-deformation (average deformation 0.05mm). When the lead frame fixing bracket is compatible with frames of different sizes, the screws need to be tightened repeatedly, which affects work efficiency.

[0005] To address this issue, we propose a lead frame straightening and inspection device for TOLL packaging processing. Utility Model Content

[0006] This invention provides a lead frame straightening and testing device for TOLL packaging processing, which solves the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0008] A lead frame straightening and inspection device for TOLL packaging processing includes:

[0009] The system comprises a mounting frame, a width adjustment mechanism, a front-to-back moving mechanism, a left-to-right moving mechanism, a flipping detection mechanism, and a lead wire frame fixing frame. The mounting frame is vertically arranged. The front-to-back moving mechanism is located at the bottom of the mounting frame and slides with the mounting frame. The width adjustment mechanism is located on the mounting frame and slides with the mounting frame. There are four left-to-right moving mechanisms, which are located on the width adjustment mechanism and slide with the width adjustment mechanism. Each left-to-right moving mechanism is equipped with a flipping detection mechanism. The lead wire frame fixing frame is vertically arranged beside the front-to-back moving mechanism and is fixedly connected to a connecting frame.

[0010] A pneumatic adsorption device is mounted on a connecting frame of a lead wire frame fixing bracket. The pneumatic adsorption device includes several cylinders, several push rods, several pistons, four fixing frames, and four trays. The fixing frames are fixedly connected to the lead wire frame fixing bracket via the connecting frame. The cylinders are connected to the fixing frames via four connecting columns. The cylinders are fixedly connected to the push rods. The push rods are fixedly connected to the pistons. The fixing frames are slidably connected to the trays. The fixing frames have several holes, and the pistons reciprocate within the holes of the fixing frames.

[0011] Through the above technical solution, by setting up a pneumatic adsorption device, when fixing the lead frame, the worker pulls out the tray and places the lead frame on the tray. At this time, the magnetic beads will attract the lead frame. When the tray is released, it is pulled back into the fixing frame under the action of the spring, thus realizing the rapid placement of the lead frame. When the hole in the tray is aligned with the hole in the fixing frame, the cylinder is activated. The working air pressure range of the cylinder is 0.3-0.6MPa. The piston is pulled outward, and the air pressure inside the hole in the tray and the hole in the fixing frame decreases. The hole diameter is 1.5mm±0.1mm, which creates an atmospheric pressure difference with the outside. Thus, the lead frame is adsorbed by the suction cup. The suction cup is made of fluororubber, thereby fixing the lead frame.

[0012] Furthermore, the pneumatic adsorption device also includes two slide rails, which are fixedly connected to the fixed frame. A first limiting block is fixedly connected to the surface of the slide rail, and a slider is slidably connected to the inner wall of the slide rail. Two sliders are fixedly connected to the tray, and a second limiting block is fixedly connected to the surface of the slider.

[0013] The above technical solution enables the pallet to slide by the cooperation of the slide rail and the slider, and the pallet pull-out distance can be limited by setting the first limit block and the second limit block.

[0014] Furthermore, the inner wall of the fixed frame is slidably connected with two fixing pins. One end of each fixing pin is fixedly connected to a pull block. A first spring is fitted onto the arc surface of the fixing pin. One end of the first spring is fixedly connected to the pull block, and the other end of the first spring is fixedly connected to the fixed frame. The surface of the slider is provided with several fixing holes, and the size of the fixing pin is adapted to the size of the fixing holes.

[0015] The above technical solution allows for the fixation of the pallet by setting a fixing pin.

[0016] Furthermore, three first fixing plates are fixedly connected to the surface of the tray, and a second spring is fixedly connected to the surface of the first fixing plates. Three second fixing plates are fixedly connected to the surface of the fixing frame, and the surfaces of the second fixing plates are fixedly connected to the second springs.

[0017] The above technical solution allows the pulled-out tray to be automatically retracted by setting a second spring.

[0018] Furthermore, the inner wall of the fixed frame is fixedly connected with several airtight rings, the size of which is adapted to the size of the tray hole and the fixed frame hole, and the surface of the piston is fixedly connected with an airtight pad, the size of which is adapted to the size of the fixed frame hole.

[0019] The above technical solution, through the use of airtight pads and airtight rings, ensures internal airtightness while reducing the air pressure in the tray holes and fixing frame holes.

[0020] Furthermore, a rubber pad is fixedly connected to the surface of the fixing frame, a plurality of magnetic beads are fixedly connected to the surface of the fixing frame, and a third limiting block is fixedly connected to the surface of the cylinder.

[0021] Through the above technical solutions, the rubber pad has the characteristics of being soft, which can reduce the collision between the pallet and the fixed frame during pallet recycling and reduce the shaking of the lead frame. The magnetic beads have magnetism and can attract the lead frame to achieve the function of temporarily positioning the lead frame. It has little impact on the external magnetic field, and the distribution of magnetic lines of force is not easily distorted. By setting a third limiting block, the piston can be restricted to prevent the piston from dislodging from the hole in the fixed frame.

[0022] Furthermore, the tray has several holes, and several suction cups are fixedly connected to the inner wall of the tray. The size of the suction cups is adapted to the size of the holes in the tray, and the size of the holes in the fixing frame is equal to the size of the holes in the tray.

[0023] Through the above technical solution, the piston and the suction cup are connected by opening holes, and the movement of the piston can drive the suction cup 820 to adhere to the lead frame.

[0024] The beneficial effects of this utility model are:

[0025] By setting up a pneumatic adsorption device, when fixing the lead frame, the operator pulls out the tray and places the lead frame on it. At this time, the magnetic beads will attract the lead frame. When the tray is released, it is pulled back into the fixing frame under the action of the spring, thus realizing the rapid placement of the lead frame. When the hole in the tray is aligned with the hole in the fixing frame, the cylinder is activated. The working air pressure range of the cylinder is 0.3-0.6MPa. The piston is pulled outward, and the air pressure inside the hole in the tray and the hole in the fixing frame decreases. The hole diameter is 1.5mm±0.1mm, which creates an atmospheric pressure difference with the outside. The lead frame is then adsorbed by the suction cup. The suction cup is made of fluororubber, thus fixing the lead frame. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a utility model Figure 1 A structural diagram from another perspective;

[0028] Figure 3 This is a schematic diagram of the lead wire frame fixing bracket of this utility model;

[0029] Figure 4 This is a disassembled structural diagram of the pneumatic adsorption device of this utility model;

[0030] Figure 5 This is a utility model Figure 4 Enlarged view of point A;

[0031] Figure 6 This is a utility model Figure 4 Enlarged view of point B;

[0032] Figure 7 This is a utility model Figure 4 Enlarged diagram of point C.

[0033] In the diagram: 1. Mounting frame; 2. Width adjustment mechanism; 3. Forward and backward movement mechanism; 4. Left and right movement mechanism; 5. Flipping detection mechanism; 6. Lead wire frame fixing frame; 7. Connecting frame; 8. Pneumatic adsorption device; 801. Fixing frame; 802. Tray; 803. Slide rail; 804. First limiting block; 805. Sliding block; 806. Second limiting block; 807. Fixing hole; 808. Pull block; 809. First spring; 810. Fixing pin; 811. First fixing plate; 812. Second spring; 813. Second fixing plate; 814. Cylinder; 815. Connecting column; 816. Push rod; 817. Piston; 818. Airtight pad; 819. Rubber pad; 820. Suction cup; 821. Airtight ring; 822. Magnetic bead; 823. Third limiting block. Detailed Implementation

[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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] like Figures 1 to 7 As shown, an embodiment of this utility model provides a lead frame straightening and detection device for TOLL packaging processing, including: a mounting frame 1, a width adjustment mechanism 2, a front-back moving mechanism 3, a left-right moving mechanism 4, a flipping detection mechanism 5, and a lead frame fixing frame 6. The mounting frame 1 is vertically arranged. The front-back moving mechanism 3 is located at the bottom of the mounting frame 1 and is slidably engaged with the mounting frame 1. The width adjustment mechanism 2 is located on the mounting frame 1 and is slidably engaged with the mounting frame 1. There are four left-right moving mechanisms 4, which are located on the width adjustment mechanism 2 and are slidably engaged with the width adjustment mechanism 2. Each left-right moving mechanism 4 is provided with a flipping detection mechanism 5. The lead frame fixing frame 6 is vertically arranged beside the front-back moving mechanism 3, and a connecting frame 7 is fixedly connected to the lead frame fixing frame 6.

[0036] A pneumatic adsorption device 8 is mounted on the connecting frame 7 of the lead wire frame fixing bracket 6. The pneumatic adsorption device 8 includes several cylinders 814, several push rods 816, several pistons 817, four fixing frames 801, and four trays 802. The fixing frames 801 are fixedly connected to the lead wire frame fixing bracket 6 via the connecting frame 7. The cylinders 814 are connected to the fixing frames 801 via four connecting posts 815. The cylinders 814 are fixedly connected to the push rods 816, and the push rods 816 are fixedly connected to the pistons 817. The fixing frames 801 are slidably connected to the trays 802. The fixing frames 801 have several holes, and the pistons 817 reciprocate within the holes of the fixing frames 801. By using the pneumatic adsorption device 8, in... When fixing the lead frame, the operator pulls out the tray 802 and places the lead frame on it. At this time, the magnetic bead 822 will attract the lead frame. When the tray 802 is released, it is pulled back into the fixing frame 801 under the action of the spring, thus realizing the quick placement of the lead frame. When the hole in the tray 802 is aligned with the hole in the fixing frame 801, the cylinder 814 is activated. The working air pressure range of the cylinder 814 is 0.3-0.6MPa. The piston 817 is pulled outward, and the air pressure inside the hole in the tray 802 and the hole in the fixing frame 801 decreases. The hole diameter is 1.5mm±0.1mm, which creates an atmospheric pressure difference with the outside. Thus, the lead frame is attracted by the suction cup 820, which is made of fluororubber, to achieve the fixation of the lead frame.

[0037] like Figures 4 to 7As shown, the pneumatic adsorption device 8 also includes two slide rails 803, which are fixedly connected to the fixed frame 801. A first limiting block 804 is fixedly connected to the surface of the slide rail 803, and a slider 805 is slidably connected to the inner wall of the slide rail 803. The two sliders 805 are fixedly connected to the tray 802, and a second limiting block 806 is fixedly connected to the surface of the slider 805. The sliding of the tray 802 can be achieved by the cooperation of the slide rail 803 and the slider 805. The pull-out distance of the tray 802 can be limited by setting the first limiting block 804 and the second limiting block 806. Two fixing pins 810 are slidably connected to the inner wall of the fixed frame 801. A pull block 808 is fixedly connected to one end of the fixing pin 810, and a first spring 8 is sleeved on the arc surface of the fixing pin 810. 09. One end of the first spring 809 is fixedly connected to the pull block 808, and the other end of the first spring 809 is fixedly connected to the fixed frame 801. Several fixing holes 807 are opened on the surface of the slider 805. The size of the fixing pin 810 matches the size of the fixing holes 807. By setting the fixing pin 810, the tray 802 can be fixedly fixed. Three first fixing plates 811 are fixedly connected to the surface of the tray 802. Second springs 812 are fixedly connected to the surface of the first fixing plates 811. Three second fixing plates 813 are fixedly connected to the surface of the fixed frame 801. The surface of the second fixing plates 813 is fixedly connected to the second springs 812. By setting the second springs 812, the pulled-out tray 802 can be automatically retracted. The inner wall of the fixed frame 801 is fixed. Several airtight rings 821 are connected, and the size of the airtight rings 821 is adapted to the size of the holes in the tray 802 and the fixed frame 801. An airtight pad 818 is fixedly connected to the surface of the piston 817, and the size of the airtight pad 818 is adapted to the size of the holes in the fixed frame 801. Through the airtight pad 818 and the airtight rings 821, the internal airtightness is ensured during the process of reducing the air pressure in the holes of the tray 802 and the fixed frame 801. A rubber pad 819 is fixedly connected to the surface of the fixed frame 801. The rubber pad 819 has the characteristic of being soft, which can reduce the collision between the tray 802 and the fixed frame 801 when the tray 802 is recycled, and reduce the shaking of the lead frame. Several magnetic beads 822 are fixedly connected to the surface of the fixed frame 801. 2. It has magnetic properties that can attract the lead frame, achieving a temporary positioning function for the lead frame. It has little impact on external magnetic fields, and the distribution of magnetic lines of force is not easily distorted. A third limiting block 823 is fixedly connected to the surface of the cylinder 814. By setting the third limiting block 823, the piston 817 can be restricted to prevent the piston 817 from dislodging from the hole of the fixing frame 801. The tray 802 has several holes, and several suction cups 820 are fixedly connected to the inner wall of the tray 802. The size of the suction cups 820 is adapted to the size of the holes in the tray 802, and the size of the holes in the fixing frame 801 is equal to the size of the holes in the tray 802. By opening the holes, the piston 817 is connected to the suction cups 820. The movement of the piston 817 can drive the suction cups 820 to attract the lead frame.

[0038] In this embodiment of the invention, during the lead frame straightening test, it needs to be fixed. The operator pulls the pull block 808 to remove the fixing pins 810 from the fixing holes 807. At this time, the first spring 809 is in a stretched state. Then, the tray 802 is pulled, and the slider 805 of the tray 802 slides on the slide rail 803, pulling the tray 802 to a suitable position. If the tray 802 is pulled outwards too much, the first limiting block 804 and the second limiting block 806 will restrict the tray 802 to prevent it from detaching. Then, the pull block 808 is released, and the fixing pins 810 are inserted into the fixing holes 807. At this time, the first spring 809 is in a reset state. The first fixing plate 811 moves with the tray 802, pulling the second spring 812 to place the lead frame inside the tray 802. At this time, the lead frame is in contact with the suction cup 820, and the magnetic bead 822 attracts the lead frame. Then, the fixing pin 810 is pulled out. Release the tray 802, and the tray 802 will retract into the fixed frame 801 under the contraction force of the second spring 812 on the second fixed plate 813. At this time, the tray 802 abuts against the rubber pad 819, and the hole of the tray 802 is aligned with the hole of the fixed frame 801. Start the cylinder 814, and the push rod 816 pulls the piston 817 outward. The third limit block 823 will restrict the piston 817 to prevent the piston 817 from disengaging. The airtight pad 818 and the airtight ring 821 can ensure the sealing between the hole of the tray 802 and the hole of the fixed frame 801. Under the action of the piston 817, the air pressure inside the hole of the tray 802 and the hole of the fixed frame 801 decreases, forming an air pressure difference with the outside. The high pressure flows to the low pressure, and the lead frame is attracted to the suction cup 820. Finally, the width adjustment mechanism 2, the front and rear moving mechanism 3 and the left and right moving mechanism 4 are used to position the lead frame to the size, and push it to the detection position. The flipping detection mechanism 5 scans the flatness of the pin.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lead frame straightening and inspection device for TOLL packaging processing, characterized in that, include: The mounting frame (1), the width adjustment mechanism (2), the front and rear moving mechanism (3), the left and right moving mechanism (4), the flipping detection mechanism (5), and the lead frame fixing frame (6) are arranged vertically. The front and rear moving mechanism (3) is located at the bottom of the mounting frame (1) and is slidably engaged with the mounting frame (1). The width adjustment mechanism (2) is located on the mounting frame (1) and is slidably engaged with the mounting frame (1). There are four left and right moving mechanisms (4), which are located on the width adjustment mechanism (2) and are slidably engaged with the width adjustment mechanism (2). Each left and right moving mechanism (4) is equipped with a flipping detection mechanism (5). The lead frame fixing frame (6) is arranged vertically on the side of the front and rear moving mechanism (3) and is fixedly connected to a connecting frame (7). A pneumatic adsorption device (8) is mounted on a connecting frame (7) of a lead wire frame fixing frame (6). The pneumatic adsorption device (8) includes several cylinders (814), several push rods (816), several pistons (817), four fixing frames (801), and four trays (802). The fixing frames (801) are fixedly connected to the lead wire frame fixing frame (6) through the connecting frame (7). The cylinders (814) are connected to the fixing frames (801) through four connecting columns (815). The cylinders (814) are fixedly connected to the push rods (816). The push rods (816) are fixedly connected to the pistons (817). The fixing frames (801) are slidably connected to the trays (802). The fixing frames (801) have several holes, and the pistons (817) reciprocate within the holes of the fixing frames (801).

2. The lead frame straightening and detection device for TOLL packaging processing according to claim 1, characterized in that, The pneumatic adsorption device (8) further includes two slide rails (803), which are fixedly connected to the fixed frame (801). A first limiting block (804) is fixedly connected to the surface of the slide rail (803), and a slider (805) is slidably connected to the inner wall of the slide rail (803). The two sliders (805) are fixedly connected to the tray (802), and a second limiting block (806) is fixedly connected to the surface of the slider (805).

3. The lead frame straightening and detection device for TOLL packaging processing according to claim 2, characterized in that, The inner wall of the fixed frame (801) is slidably connected to two fixing pins (810). One end of the fixing pin (810) is fixedly connected to a pull block (808). The arc surface of the fixing pin (810) is fitted with a first spring (809). One end of the first spring (809) is fixedly connected to the pull block (808), and the other end of the first spring (809) is fixedly connected to the fixed frame (801). The surface of the slider (805) is provided with several fixing holes (807). The size of the fixing pin (810) is adapted to the size of the fixing hole (807).

4. The lead frame straightening and detection device for TOLL packaging processing according to claim 1, characterized in that, The surface of the tray (802) is fixedly connected to three first fixing plates (811), and the surface of the first fixing plates (811) is fixedly connected to a second spring (812). The surface of the fixing frame (801) is fixedly connected to three second fixing plates (813), and the surface of the second fixing plates (813) is fixedly connected to the second spring (812).

5. The lead frame straightening and detection device for TOLL packaging processing according to claim 1, characterized in that, The inner wall of the fixed frame (801) is fixedly connected with a number of airtight rings (821). The size of the airtight rings (821) is adapted to the size of the holes in the tray (802) and the fixed frame (801). The surface of the piston (817) is fixedly connected with an airtight pad (818). The size of the airtight pad (818) is adapted to the size of the holes in the fixed frame (801).

6. The lead frame straightening and detection device for TOLL packaging processing according to claim 1, characterized in that, A rubber pad (819) is fixedly connected to the surface of the fixed frame (801), a third limiting block (823) is fixedly connected to the surface of the cylinder (814), and a number of magnetic beads (822) are fixedly connected to the surface of the fixed frame (801).

7. The lead frame straightening and detection device for TOLL packaging processing according to claim 1, characterized in that, The tray (802) has several holes, and several suction cups (820) are fixedly connected to the inner wall of the tray (802). The size of the suction cups (820) is adapted to the size of the holes in the tray (802), and the size of the holes in the fixing frame (801) is equal to the size of the holes in the tray (802).

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