A film tearing machine for lead frames and a film tearing process thereof

Abstract

The application discloses a film tearing machine for lead frames, comprising a film tearing mechanism and a material collecting mechanism which are installed on a workbench in sequence. A carrying module on the film tearing mechanism drives a roller film tearing assembly to move horizontally. A rotating assembly on the film tearing mechanism can vacuum adsorb the lead frame and adjust the angle of the lead frame. The roller film tearing assembly is provided with a liftable suction disc group which can adsorb the lead frame and a clip which can hold the lead frame. An adhesive roller elastically contacts the lead frame to tear the film. The film tearing clip assembly comprises a clamping jaw which can adjust the angle and hold the film waste. A receiving plate of a receiving assembly on the material collecting mechanism can carry the lead frame and adjust the height so that the lead frame falls into a second feeding assembly to be conveyed. A pushing assembly horizontally pushes the lead frame conveyed on the second feeding assembly into a material box. The material box is controlled by a horizontal module and a lifting module and is placed on the receiving assembly. The film tearing machine adopts an adhesive roller with elastic pressing structure, does not contact the surface of the product after tearing the film, carries the product, saves the process of secondary cleaning, and improves the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of improved design technology of film peeling machines, and more particularly to a film peeling machine for lead frames and its film peeling process. Background Technology

[0002] Electronic products typically have a film coating on their surface. Manually peeling off this film leaves fingerprints and other marks. Existing film-peeling machines generally use a robotic arm in conjunction with a film-peeling module. These modules either use adhesive tape or sticky rollers to peel the film. The former method is wasteful because the tape cannot be reused, and its complex structure leads to high costs. The latter method suffers from reduced roller adhesion over time, causing peeling failures, and the rollers can easily damage the product when pressing firmly against its surface.

[0003] In the prior art, patent CN114602819A discloses a fully automatic circuit board film-peeling machine, including a base and a control panel. The base is equipped with a feeding mechanism, a conveying mechanism, a film-peeling mechanism, and a discharging mechanism. All three mechanisms are controlled by the control panel. The conveying mechanism includes a first conveyor belt, a conveyor roller group, and a second conveyor belt arranged sequentially from left to right. The feeding mechanism is located at the first conveyor belt. The film-peeling mechanism includes an upper film-peeling device and a lower film-peeling device, respectively located at the upper and lower ends of the conveyor roller group. The discharging mechanism includes a discharging robot and a discharging conveyor belt, which are arranged side-by-side on one side of the second conveyor belt. The discharging robot is positioned above the discharging conveyor belt and the second conveyor belt. This invention is easy to operate, highly automated, time-saving, and labor-saving, effectively improving production efficiency and meeting industry needs.

[0004] In the above technical solution, a channel is formed between the upper and lower conveyor rollers for the circuit board to pass through. The first take-up motor drives the upper take-up roller to rotate, causing the first roll of film to peel off the protective film on the upper surface of the circuit board. The second take-up motor drives the lower take-out roller to rotate, causing the second roll of film to peel off the protective film on the lower surface of the circuit board. Because adhesive tape is used for peeling, an additional take-up roller for the adhesive tape is required, resulting in higher tape consumption. Furthermore, the conveyor rollers directly contact the surface of the circuit board. For other electronic products with high surface quality requirements, this design often cannot meet the usage requirements.

[0005] In order to solve one of the above problems, this application provides a film-peeling machine for lead frames and its film-peeling process. Summary of the Invention

[0006] The purpose of this invention is to solve the problems existing in the prior art, and to propose a film-removing machine and its film-removing process for lead frame. It adopts a sticky roller with a spring-loaded structure, and the product is transported without contacting the product surface after film removal, thus eliminating the need for secondary cleaning and reducing the product process.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a film-peeling process for lead frames, comprising the following steps:

[0008] S1. In the feeding process, the second suction cup group of the film tearing mechanism adsorbs the conveyed lead frame and places it on the rotating component. The rotating component adsorbs the lead frame through the first suction cup group and automatically adjusts its placement angle.

[0009] S2. Film peeling process: The roller film peeling assembly of the film peeling mechanism starts rolling the adhesive film from one corner of the lead frame, peels off the surface film and removes static electricity at the same time, and then the first clamp cylinder of the film peeling mechanism clamps the two sides of the lead frame through the clamp.

[0010] S3. Receiving process: The film tearing mechanism transfers the clamped lead frame to the receiving component through the transport module. After the lead frame on the receiving component is dropped, it is conveyed forward and pushed into the material box by the pushing component. The material box can be placed in the receiving component through the cooperation of the horizontal module and the lifting module.

[0011] In step S1, the lead frame is supported on both sides by the first feeding assembly and conveyed forward; the second suction cup group is installed on the first lifting plate of the film tearing mechanism, and the first lifting plate drives the lead screw mechanism to move up and down after the first motor reduces the speed; the first suction cup group is set on the rotating platform of the rotating assembly, and the rotating platform is driven by the first rotating cylinder fixed on the base plate, and an antistatic group is set on one side of the base plate.

[0012] In step S2, the roller film-tearing assembly is equipped with an adhesive roller with a spring-loaded structure. The adhesive roller is driven to move up and down by a first lifting cylinder. The first lifting cylinder is installed on the first lifting plate of the roller film-tearing assembly. The first lifting plate is also equipped with a second lifting cylinder. The second lifting cylinder drives the first clamp cylinder to move up and down.

[0013] Furthermore, as described above, the adhesive roller is mounted on the floating plate via a roller quick-release assembly. The floating plate is driven by a first horizontal cylinder to bring the pressure block into or away from the adhesive roller. The floating plate is elastically connected to the telescopic shaft of the first lifting cylinder. The second lifting cylinder drives the second lifting plate to work. The second lifting plate is equipped with a first clamp cylinder. The first clamp cylinder drives two oppositely arranged clamps to clamp or release the side of the lead frame.

[0014] In step S3, the receiving assembly includes a liftable receiving plate located inside the second feeding assembly. The lead frame placed on the receiving plate is lowered and then supported by the belt on the second feeding assembly and conveyed forward. The pushing assembly includes a liftable second horizontal cylinder elastically installed inside the second feeding assembly. The lead frame conveyed by the belt to the material box is pushed by the piston shaft of the second horizontal cylinder until it is fully inserted into the material box.

[0015] Furthermore, as described above, the conveying module uses a motor-driven screw mechanism to move the film-tearing mechanism horizontally; a third lifting cylinder is connected below the receiving plate; a second horizontal cylinder is mounted on a spring block seat, which is inclined and equipped with a spring to provide oblique elastic force; the material box is held by two clamps of a third clamp cylinder, which is driven to move horizontally by the horizontal module, and the entire horizontal module moves vertically by the lifting module; the receiving assembly includes a synchronous belt that can adjust the placement position of the material box.

[0016] A film-tearing machine for lead frames includes a frame, on which a film-tearing mechanism and a material-collecting mechanism are sequentially mounted on a worktable. The film-tearing mechanism includes a conveying module, a rotating component, a roller film-tearing component, and a film-tearing clamp component. The conveying module drives the roller film-tearing component to move horizontally. The rotating component vacuum-adsorbs the lead frame and adjusts its placement angle. The roller film-tearing component is equipped with a liftable suction cup group to adsorb the lead frame and clamps to hold the lead frame, and an adhesive roller elastically contacts the lead frame to tear the film. The film-tearing clamp component includes adjustable-angle grippers to hold the film-tearing waste.

[0017] The receiving mechanism includes a second feeding component, a receiving component, a pushing component, a horizontal module, a lifting module, and a receiving component. The receiving component and the pushing component are located in the conveying channel of the second feeding component. The receiving plate of the receiving component carries the lead frame and adjusts its height so that the lead frame falls onto the second feeding component and is conveyed forward. The pushing component horizontally pushes the lead frame conveyed on the second feeding component into the material box. The material box is controlled and placed on the receiving component by the horizontal module and the lifting module.

[0018] Furthermore, it also includes a first feeding component, the travel of the conveying module is located between the first feeding component and the receiving component, and a waste discharge port is also provided on the worktable, with the film tearing clamp component installed at the waste discharge port.

[0019] Furthermore, the conveying module described above includes a motor and a screw mechanism driven by the motor after speed reduction, which drives the roller film-tearing assembly to move horizontally;

[0020] The rotating assembly includes a base plate, on which a first rotating cylinder is mounted, a rotating platform is provided on the first rotating cylinder, a first suction cup assembly is provided on the rotating platform, and an anti-static assembly and a sensor are also installed on the side of the base plate.

[0021] The roller film-tearing assembly includes a first motor and a screw mechanism driven by the first motor after speed reduction. A first lifting plate is provided on the screw mechanism. An adhesive film assembly, a second lifting cylinder, and a second suction cup assembly are fixed on the first lifting plate. The fixing plate of the adhesive film assembly is installed on the side of the first lifting plate. A first lifting cylinder is provided on the first lifting plate. The telescopic shaft of the first lifting cylinder is elastically connected to a floating plate. A roller quick-release assembly and a first horizontal cylinder are fixed on the floating plate. The roller quick-release assembly can clamp the roller mounting plate with the adhesive roller onto the floating plate. The telescopic shaft of the first horizontal cylinder is connected to a film-pressing block. The film-pressing block is horizontally opposite to the adhesive roller. The telescopic shaft of the second lifting cylinder is connected to a second lifting plate. A first clamp cylinder is installed on the second lifting plate. Two clamps are provided below the first clamp cylinder.

[0022] The film-tearing clamp assembly includes a second rotary cylinder mounted on a workbench. A second clamp cylinder is mounted on the shaft of the second rotary cylinder. The second clamp cylinder has two opposing clamps. An air blowing component is mounted on one side of the clamps. The air blowing component is mounted on the workbench and blows air toward the clamps.

[0023] Furthermore, as described above, the second feeding assembly includes two belts, with a receiving assembly and a pushing assembly disposed between the two belts;

[0024] The receiving plate of the receiving assembly is connected to a third lifting cylinder. The height adjustment of the receiving plate allows the lead frame to be placed on the belt and conveyed forward.

[0025] The pushing assembly includes a second horizontal cylinder fixed on an inclined plate, the inclined plate is movably mounted on a spring block seat and a spring is provided between the two, the spring block seat is fixed on the worktable, and the top height of the second horizontal cylinder does not exceed the height of the belt.

[0026] The horizontal module includes a third horizontal cylinder, a third clamp cylinder is fixed on the telescopic shaft of the third horizontal cylinder, and the two clamps of the third clamp cylinder hold the material box. The lifting module includes a second motor, which drives the lead screw mechanism after deceleration. The third horizontal cylinder is installed on the nut seat of the lead screw mechanism.

[0027] The material receiving assembly includes a third motor and a synchronous belt driven by the third motor after speed reduction. Limiting plates and sensors are installed on both sides of the synchronous belt. The material box is placed on the synchronous belt and blocked and limited by the limiting plates. Several slots are machined on the opposite side walls inside the material box. A lead frame is stored between two slots of the same horizontal height.

[0028] Compared with the prior art, the beneficial effects of the present invention are: the adhesive roller with the elastic structure rolls the adhesive film from one corner of the lead frame, removes the surface film and removes static electricity at the same time, and after the film is removed, it is transported in a non-contact manner on the upper surface.

[0029] During the film peeling process, an anti-static method is used simultaneously to eliminate the positive charge electrons on the plastic film, so that it can be separated from the lead frame product after peeling and will not produce secondary adhesion.

[0030] By using a streamlined material collection method, the materials that have been peeled off are stored again in a non-contact manner and transferred to the next process for use. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the entire machine of the present invention;

[0032] Figure 2 for Figure 1 Top view;

[0033] Figure 3 This is a schematic diagram of the film-tearing mechanism of the present invention;

[0034] Figure 4 for Figure 3 An explosion diagram;

[0035] Figure 5 This is a schematic diagram of the rotating component of the present invention;

[0036] Figure 6 This is a schematic diagram of the roller film-tearing assembly of the present invention;

[0037] Figure 7 for Figure 6 An explosion diagram;

[0038] Figure 8 This is a schematic diagram of the mucosal assembly of the present invention;

[0039] Figure 9 for Figure 8 An explosion diagram;

[0040] Figure 10 This is a schematic diagram of the film-tear clip assembly of the present invention;

[0041] Figure 11 This is the receiving mechanism of the present invention;

[0042] Figure 12 This is a schematic diagram of the receiving component and the pushing component of the present invention;

[0043] Figure 13 This is a schematic diagram of the receiving component of the present invention.

[0044] In the diagram: 1. Frame; 11. Workbench; 12. Waste discharge port; 2. First feeding assembly; 3. Film tearing mechanism; 31. Handling module; 32. Rotating assembly; 321. Base plate; 322. First rotary cylinder; 323. Rotating platform; 324. First suction cup assembly; 325. Antistatic assembly; 33. Roller film tearing assembly; 331. First motor; 332. First lifting plate; 333. Film adhesion assembly; 3331. Fixed plate; 3332. First lifting cylinder; 3333. Floating plate; 3334. First horizontal cylinder; 3335. Film pressing block; 3336. Adhesive roller; 3337. Roller mounting plate; 3338. Roller quick-release assembly; 3339. Spring; 334. 335. Second lifting cylinder; 336. First clamp cylinder; 337. Second lifting plate; 338. Second suction cup assembly; 34. Film tearing clamp assembly; 341. Air blowing assembly; 342. Gripper; 343. Second clamp cylinder; 344. Second rotary cylinder; 4. Material receiving mechanism; 41. Second feeding assembly; 42. Receiving assembly; 421. Receiving plate; 422. Third lifting cylinder; 43. Pushing assembly; 431. Second horizontal cylinder; 432. Elbow seat; 44. Material box; 45. Horizontal module; 451. Third clamp cylinder; 452. Third horizontal cylinder; 46. Lifting module; 461. Second motor; 47. Material receiving assembly; 471. Third motor; 472. Synchronous belt. Detailed Implementation

[0045] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "fixed," "installed," "connected," "set," etc., should be interpreted broadly. For example, when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "installed" on another element, it can be directly installed on the other element or there may be an intervening element. When an element is said to be "connected" to another element, 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 a direct connection or an indirect connection through an intermediate medium; it can be a communication between the two elements.

[0047] Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Example 1

[0050] Reference Figure 1-13 As shown, a film-tearing machine for lead frames according to the present invention includes a frame 1, on which a film-tearing mechanism 3 and a material-collecting mechanism 4 are sequentially mounted on a worktable 11, as shown. Figure 1 and Figure 2 As shown, the film-tearing mechanism 3 includes a conveying module 31, a rotating assembly 32, a roller film-tearing assembly 33, and a film-tearing clamp assembly 34, as follows: Figure 3 and Figure 4 As shown, the conveying module 31 drives the roller film-tearing assembly 33 to move horizontally, the rotating assembly 32 vacuum-adsorbs the lead frame and automatically adjusts its placement angle, the roller film-tearing assembly 33 is equipped with a liftable suction cup assembly to adsorb the lead frame and clamps to hold the lead frame, and an adhesive roller 3336 elastically contacts the upper surface of the lead frame to adhere and tear the film, the film-tearing clamp assembly 34 includes an adjustable-angle clamping claw 342 to hold the film-tearing waste; the receiving mechanism 4 includes a second feeding assembly 41, a receiving assembly 42, a pushing assembly 43, a horizontal module 45, a lifting module 46 and a receiving assembly 47, as shown. Figure 11-13 As shown, the receiving component 42 and the pushing component 43 are located in the conveying channel of the second feeding component 41. The receiving plate 421 of the receiving component 42 carries the lead frame and adjusts its height so that the lead frame falls onto the second feeding component 41 and is conveyed forward. The pushing component 43 pushes the lead frame conveyed on the second feeding component 41 horizontally into the material box 44. The material box 44 is controlled by the horizontal module 45 and the lifting module 46 and placed on the receiving component 47.

[0051] It also includes a first feeding assembly 2, located on one side of the rotating assembly 32, used to transport the lead frame that has been coated in the previous stage. The first feeding assembly 2 includes two side-by-side support plates, each with a belt and a corresponding transmission mechanism. The power for both belts is provided by a motor after speed reduction. Multiple pulleys are assisted by belt tensioning pulleys to adjust the tension. The two support plates are mounted on the worktable 11 and the distance between them is adjustable. They are fastened with bolts using strip grooves on the bottom of the support plates to accommodate the transport of products of different sizes. Both ends of the product contact the belts. The travel of the conveying module 31 is located between the first feeding assembly 2 and the receiving assembly 42, which can transfer the lead frame from the first feeding assembly 2 to the rotating assembly 32 and then to the receiving assembly 42. This implicitly defines the installation positions of the first feeding assembly 2, the rotating assembly 32, and the receiving assembly 42 on the worktable 11. The worktable 11 is also equipped with a waste discharge port 12. Figure 2-4 As shown, the film tearing clamp assembly 34 is installed at the waste discharge port 12, which facilitates the clamping of the film waste after tearing and dropping it into the waste box 44 set below the waste discharge port 12.

[0052] Example 2

[0053] Reference Figure 1-13 As shown, based on the technical solution of Embodiment 1, a film-tearing machine for lead wire frames, regarding the specific structural design of the film-tearing mechanism 3, is as follows: Figure 3 and Figure 4 As shown, the conveying module 31 includes a motor and a screw mechanism driven by the motor after speed reduction. This screw mechanism drives the roller film-tearing assembly 33 to move horizontally. Specifically, the back plate of the roller film-tearing assembly 33 is mounted on the nut seat of the screw mechanism, and other components of the roller film-tearing assembly 33 are mounted on the back plate. Furthermore, as... Figure 4 and Figure 5 As shown, the rotating assembly 32 includes a base plate 321 fixed on the workbench 11, a first rotating cylinder 322 mounted on the base plate 321, a rotating platform 323 mounted on the first rotating cylinder 322, a first suction cup assembly 324 mounted on the rotating platform 323, and an antistatic assembly 325 and a sensor mounted on the side of the base plate 321. The first suction cup assembly 324 consists of multiple suction cups, which are connected to a vacuum device via air pipes and matching air valves. The antistatic assembly 325 may be an ion blower, an ion gun, an ion bar, etc. The sensor may be a photoelectric sensor or other sensor capable of detecting the position and angle of the lead frame on the rotating platform 323.

[0054] like Figure 6-9As shown, the roller film-tearing assembly 33 includes a first motor 331 and a lead screw mechanism driven by the first motor 331 after its speed is reduced. Specifically, the first motor 331 and its corresponding lead screw mechanism are mounted on a back plate. A first lifting plate 332 is fixed to the nut seat on the lead screw mechanism. The first lifting plate 332 is fixed with a film-adhesive assembly 333, a second lifting cylinder 334, and a second suction cup assembly 337. Figure 7-9 As shown, the fixing plate 3331 of the mucosa assembly 333 is installed on the side of the first lifting plate 332. The first lifting plate 332 is provided with a first lifting cylinder 3332, and the telescopic shaft of the first lifting cylinder 3332 is elastically connected to the floating plate 3333. Figure 9 As shown, a spring 3339 or a compression spring is added at the connection between the telescopic shaft and the floating plate 3333 to give the floating plate 3333 a certain buffering effect, so as to prevent the sticky roller 3336 from directly descending and damaging the lead frame. A roller quick-release assembly 3338 and a first horizontal cylinder 3334 are fixed on the floating plate 3333. The roller quick-release assembly 3338 can snap the roller mounting plate 3337 with the sticky roller 3336 onto the floating plate 3333, such as... Figure 8 As shown, a lever structure using an elbow clamp is adopted to achieve quick disassembly and quick replacement. The telescopic shaft of the first horizontal cylinder 3334 is connected to the pressure block 3335. The pressure block 3335 and the adhesive roller 3336 are set horizontally opposite each other. Under the drive of the first horizontal cylinder 3334, the pressure block 3335 can approach or move away from the adhesive roller 3336. The arc-shaped opening of the pressure block 3335 abuts against the adhesive roller 3336 to keep it stationary. At this time, it does not have the function of adhesive film tearing. Conversely, when the arc-shaped opening of the pressure block 3335 disengages from the adhesive roller 3336, the adhesive roller 3336 can rotate freely, thus having the function of adhesive film tearing. Combined with the lifting and lowering of the floating plate 3333, the adhesive roller 3336 is driven to press down to contact the film on the upper surface of the lead frame or rise away from the lead frame. The conveying module 31 drives the whole to move horizontally forward to tear the film. A second lifting cylinder 334 is located in the upper middle part of the first lifting plate 332. The telescopic shaft of the second lifting cylinder 334 is connected to the second lifting plate 336. First clamp cylinders 335 are respectively installed on both sides of the second lifting plate 336. Two opposing clamps are located below the first clamp cylinders 335. The two clamps can respectively clamp the two sides of the lead frame without touching the upper surface, thus preventing contamination of the smooth surface of the lead frame after film removal. The second suction cup assembly 337 is located on the first lifting plate 332 and its installation position is offset from that of the clamps on the first clamp cylinders 335. Figure 7 As shown, two notches are provided on the first lifting plate 332 for the installation of the first clamp cylinder 335. The second suction cup group 337 and the first suction cup group 324 have the same structure, which will not be described in detail here.

[0055] Furthermore, such as Figure 10As shown, the film-tearing clamp assembly 34 includes a second rotary cylinder 344 mounted on the workbench 11. A second clamp cylinder 343 is mounted on the rotating shaft of the second rotary cylinder 344. The second clamp cylinder 343 is provided with two opposing clamps 342. An air blowing assembly 341 is provided on one side of the clamps 342. The air blowing assembly 341 is mounted on the workbench 11 and blows air toward the clamps 342, so that the film waste adhering to the adhesive roller 3336 can be blown with a certain wind force to facilitate clamping by the clamps 342. The adhesive roller 3336 starts rolling the adhesive film from one corner of the lead frame adsorbed on the rotary table. With the help of the horizontal movement of the transport module 31, the torn film is moved to the gripper 342. The gripper 342 adjusts its angle to clamp the film waste, so that the film waste is released from the adhesive roller 3336. Then the transport module 31 returns to the top of the rotary table and is clamped on the side by the clamps of the two sets of first clamp cylinders 335 and moves again to the receiving assembly 42 to drop the film. The gripper 342 then releases, allowing the film waste to fall into the waste box 44 in the worktable 11.

[0056] Example 3

[0057] Reference Figure 1-13 As shown, based on the technical solution of Embodiment 2, a film-tearing machine for a lead frame, regarding the specific structural design of the receiving mechanism 4, is as follows: Figure 12 As shown, the second feeding assembly 41 includes two belts, with a receiving assembly 42 and a pushing assembly 43 disposed between the two belts. The structure of the second feeding assembly 41 is the same as that of the first feeding assembly 2, and will not be described in detail here. In addition, a third lifting cylinder 422 is connected below the receiving plate 421 of the receiving assembly 42. The height adjustment of the receiving plate 421 allows the lead frame to be placed on the two belts and conveyed forward. The size of the receiving plate 421 is smaller than the distance between the two belts. The receiving plate 421 is designed as a straight plate with protrusions at both ends, and the protrusions are used to support the two ends of the lead frame. In addition, the pusher assembly 43 includes a second horizontal cylinder 431 fixed on the inclined plate. The inclined plate is movably mounted on the spring block seat and a spring 3339 is provided between the two. The inclined plate receives the force of the spring 3339 in the inclined direction, so that the second horizontal cylinder 431 can work flexibly in both the horizontal and vertical directions, so as to prevent the forward conveying lead frame from being damaged by the thrust impact. The spring block seat is fixed on the worktable 11. The top height of the second horizontal cylinder 431 does not exceed the height of the belt. Specifically, the height of the piston shaft of the second horizontal cylinder 431 does not exceed the upper surface of the belt. Generally, the top height of the piston shaft is located within the range between the upper and lower surfaces of the belt.

[0058] Furthermore, such as Figure 11 and Figure 13As shown, the horizontal module 45 includes a third horizontal cylinder 452, and a third clamp cylinder 451 is fixed on the telescopic shaft of the third horizontal cylinder 452. The two clamps of the third clamp cylinder 451 hold the material box 44. The lifting module 46 includes a second motor 461. After the second motor 461 slows down, it drives a lead screw mechanism. The third horizontal cylinder 452 is installed on the nut seat of the lead screw mechanism. After the material box 44 is clamped, it can move in both horizontal and vertical directions to facilitate placement on the receiving assembly 47. In addition, the receiving assembly 47 includes a third motor 471 and a synchronous belt 472 driven by the third motor 471 after slowing down. Limit plates and sensors are installed on both sides of the synchronous belt 472. The material box 44 is placed on the synchronous belt 472 and is blocked and limited by the limit plates. The receiving assembly 47 includes a support plate and two side plates. The support plate is located on the workbench 11. The side plates are respectively equipped with synchronous belt 472 transmission mechanisms and driven by a third motor 471 after speed reduction. The limit plate is fixed on the side plates. The side plates are also equipped with photoelectric sensors to sense the position and count of the material boxes 44. Multiple layers can be placed on the side plates. Each layer consists of a motor and two corresponding synchronous belt 472 transmission mechanisms. After one layer is filled with material boxes 44, another layer is placed, and so on. A large number of material boxes 44 and lead frames can be stored in a limited space. The material boxes 44 are stored sequentially on the synchronous belt 472. With the cooperation of the horizontal module 45 and the lifting module 46, the material boxes 44 can be quickly placed in place in an assembly line manner.

[0059] Based on the technical solutions of the above embodiments, a film-peeling process for lead frames includes the following steps: S1. Feeding process, the second suction cup group 337 of the film-peeling mechanism 3 adsorbs the delivered lead frame and places it on the rotating component 32, and the rotating component 32 adsorbs the lead frame through the first suction cup group 324 and automatically adjusts its placement angle.

[0060] S2. Film peeling process: The roller film peeling assembly 33 of the film peeling mechanism 3 starts rolling the adhesive film from one corner of the lead frame, peels off the surface film and removes static electricity at the same time, and then the first clamp cylinder 335 of the film peeling mechanism 3 clamps the two sides of the lead frame through the clamp.

[0061] S3. Receiving process: The film tearing mechanism 3 transfers the clamped lead frame to the receiving component 42 through the transport module 31. After the lead frame on the receiving component 42 is dropped, it is conveyed forward and pushed into the material box 44 by the pushing component 43. The material box 44 can be placed in the receiving component 47 through the cooperation of the horizontal module 45 and the lifting module 46.

[0062] In step S1, the lead frame is supported on both sides by the first feeding assembly 2 and conveyed forward; the second suction cup group 337 is installed on the first lifting plate 332 of the film tearing mechanism 3, and the first lifting plate 332 drives the lead screw mechanism to move up and down after the first motor 331 reduces the speed; the first suction cup group 324 is provided on the rotating platform 323 of the rotating assembly 32, and the rotating platform 323 is driven by the first rotating cylinder 322 fixed on the base plate 321, and the static elimination group 325 is provided on one side of the base plate 321.

[0063] In step S2, the roller film-tearing assembly 33 is provided with an adhesive roller 3336 with a spring-loaded structure. The adhesive roller 3336 is driven to move up and down by a first lifting cylinder 3332. The first lifting cylinder 3332 is installed on the first lifting plate 332 of the roller film-tearing assembly 33. The first lifting plate 332 is also provided with a second lifting cylinder 334. The second lifting cylinder 334 drives the first clamp cylinder 335 to move up and down. Furthermore, the adhesive roller 3336 is mounted on the floating plate 3333 via the roller quick-release assembly 3338. The floating plate 3333 is driven by the first horizontal cylinder 3334 to bring the pressure block 3335 into contact with or away from the adhesive roller 3336. The floating plate 3333 is elastically connected to the telescopic shaft of the first lifting cylinder 3332. The second lifting cylinder 334 drives the second lifting plate 336 to work. The second lifting plate 336 is equipped with a first clamp cylinder 335. The first clamp cylinder 335 drives two oppositely arranged clamps to clamp or release the side of the lead frame.

[0064] In step S3, the receiving assembly 42 includes a liftable receiving plate 421, which is located inside the second feeding assembly 41. The lead frame placed on the receiving plate 421 is lowered and then supported by the belt on the second feeding assembly 41 and conveyed forward. The pushing assembly 43 includes a liftable second horizontal cylinder 431, which is elastically installed inside the second feeding assembly 41. The lead frame conveyed by the belt to the material box 44 is pushed by the piston shaft of the second horizontal cylinder 431 until it is fully inserted into the material box 44. Furthermore, the conveying module 31 drives the lead screw mechanism via a motor to move the film-tearing mechanism 3 horizontally as a whole; the receiving plate 421 is connected to a third lifting cylinder 422 below; the second horizontal cylinder 431 is mounted on the spring block seat, the spring block seat is inclined and equipped with a spring 3339 to provide oblique elastic force; the material box 44 is clamped by two clamps of the third clamp cylinder 451, the third clamp cylinder 451 is driven to move horizontally by the horizontal module 45, and the horizontal module 45 as a whole is driven to move vertically by the lifting module 46; the receiving assembly 47 includes a synchronous belt 472 that can adjust the placement position of the material box 44.

[0065] The core improvement of this invention is the use of a vacuum suction cup assembly to adsorb and transport the lead frame, automatically adjusting the angle. A spring-loaded adhesive roller 3336 rolls the adhesive film from one corner of the lead frame, peeling off the surface film while simultaneously removing static electricity. After the film is discarded, it is transported to the receiving mechanism 4 by a first clamp cylinder 335. The film-peeling mechanism 3 is an integrated module structure that combines vacuum adsorption, transport, and film peeling. The spring-loaded adhesive film structure ensures that after the adhesive roller 3336 contacts the lead frame product, a spring 3339 elastically adheres to one corner of the film, ensuring the integrity of the lead frame product and the stability of the adhesive film operation. This allows for a single film peeling operation, avoiding defects such as empty film peeling and damage to the lead frame product. The overall structure is integrated and compact, enabling multi-functional operation in a small space. Specifically, the spring-loaded adhesive roller 3336 uses an elbow clamp method for quick disassembly and replacement, allowing for rapid replacement after thousands of uses, saving equipment cleaning time. The innovation lies in the modularization and standardization of the film-tearing structure, which optimizes the structure by allowing suction cups to handle products and the 3336 adhesive rollers of the elastic structure to handle products without contacting the product surface after film tearing. This ensures that the product remains clean after being adsorbed by the suction cups and pressed by the 3336 adhesive rollers, eliminating the need for secondary cleaning and reducing product processing steps.

[0066] The various motors and cylinders of this invention, along with the digital electronic circuit technology, low-frequency radio communication technology, microcomputer control technology, computer control technology, motor drive control technology, power transmission technology, encoder speed feedback signal detection sensor technology, angle feedback signal detection sensor technology, PID control algorithm, etc., used are existing technologies or materials. Those skilled in the art can directly purchase or order them from the market according to the required product model and specifications.

[0067] All electrical components mentioned in the text are connected to an external main controller and 220V AC mains power or industrial power. The main controller can be a conventional known device such as a computer that plays a control role.

[0068] The above description is only a preferred embodiment of the present invention, and common knowledge such as specific structures and characteristics in the solution are not described in detail here.

Claims

1. A film-peeling process for lead frames, characterized in that, Includes the following steps: S1. In the feeding process, the second suction cup group (337) of the film tearing mechanism (3) adsorbs the conveyed lead frame and places it on the rotating component (32). The rotating component (32) adsorbs the lead frame through the first suction cup group (324) and automatically adjusts the placement angle. S2. Film peeling process: The film peeling mechanism (3) rolls the adhesive film from one corner of the lead frame by using a roller film peeling assembly (33) with a spring-loaded structure to peel off the surface film and remove static electricity at the same time. The peeled surface film is then held by the film peeling clamp assembly (34). The first clamp cylinder (335) of the film peeling mechanism (3) clamps both sides of the lead frame in a way that does not contact the upper surface of the product. S3. Receiving process: The film tearing mechanism (3) transfers the clamped lead frame to the receiving component (42) through the transport module (31). After the lead frame on the receiving component (42) is dropped, it is conveyed forward and pushed into the material box (44) by the pushing component (43). The material box (44) can be placed in the receiving component (47) through the cooperation of the horizontal module (45) and the lifting module (46).

2. The film-peeling process for a lead frame according to claim 1, characterized in that, In step S1, the lead frame is supported on both sides by the first feeding assembly (2) and conveyed forward; the second suction cup group (337) is installed on the first lifting plate (332) of the film tearing mechanism (3), and the first lifting plate (332) moves up and down by the screw mechanism driven by the first motor (331) after speed reduction; the first suction cup group (324) of the rotating assembly (32) is set on the rotating platform (323), and the rotating platform (323) is driven by the first rotating cylinder (322) fixed on the base plate (321), and an antistatic group (325) is set on one side of the base plate (321).

3. The film-peeling process for a lead frame according to claim 1, characterized in that, In step S2, the roller film-tearing assembly (33) is provided with an adhesive roller (3336) with a spring-loaded structure. The adhesive roller (3336) is driven up and down by a first lifting cylinder (3332). The first lifting cylinder (3332) is installed on the first lifting plate (332) of the roller film-tearing assembly (33). The first lifting plate (332) is also provided with a second lifting cylinder (334). The second lifting cylinder (334) drives the first clamp cylinder (335) to move up and down.

4. The film-peeling process for a lead frame according to claim 3, characterized in that, The adhesive roller (3336) is mounted on the floating plate (3333) via the roller quick-release assembly (3338). The floating plate (3333) is driven by the first horizontal cylinder (3334) to make the pressure block (3335) adhere to or move away from the adhesive roller (3336). The floating plate (3333) is elastically connected to the telescopic shaft of the first lifting cylinder (3332). The second lifting cylinder (334) drives the second lifting plate (336) to work. The second lifting plate (336) is equipped with a first clamp cylinder (335). The first clamp cylinder (335) drives two oppositely arranged clamps to clamp or release the side of the lead frame.

5. The film-peeling process for a lead frame according to claim 1, characterized in that, In step S3, the receiving assembly (42) includes a liftable receiving plate (421), which is located inside the second feeding assembly (41). The lead frame placed on the receiving plate (421) is lowered and then supported by the belt on the second feeding assembly (41) and conveyed forward. The pushing assembly (43) includes a liftable second horizontal cylinder (431), which is elastically installed inside the second feeding assembly (41). The lead frame conveyed by the belt to the material box (44) is pushed by the piston shaft of the second horizontal cylinder (431) until it is fully inserted into the material box (44) for storage.

6. The film-peeling process for a lead frame according to claim 5, characterized in that, The conveying module (31) drives the screw mechanism of the motor to move the film tearing mechanism (3) horizontally; the receiving plate (421) is connected to the third lifting cylinder (422) below; the second horizontal cylinder (431) is installed on the spring block seat, the spring block seat is inclined and is provided with a spring (3339) to provide oblique elastic force; the material box (44) is clamped by the two clamps of the third clamp cylinder (451), the third clamp cylinder (451) is driven to move horizontally by the horizontal module (45), and the horizontal module (45) moves vertically by the lifting module (46); the receiving component (47) includes a synchronous belt (472) that can adjust the placement position of the material box (44).

7. A film-tearing machine matching any one of claims 1-6 for lead frame film-tearing process, comprising a frame (1), wherein a film-tearing mechanism (3) and a material-collecting mechanism (4) are sequentially mounted on a worktable (11) on the frame (1), characterized in that, The film-tearing mechanism (3) includes a transport module (31), a rotating component (32), a roller film-tearing component (33), and a film-tearing clamp component (34). The transport module (31) drives the roller film-tearing component (33) to move horizontally. The rotating component (32) can vacuum-adsorb the lead frame and adjust its placement angle. The roller film-tearing component (33) is equipped with a liftable suction cup group to adsorb the lead frame and clamps to hold the lead frame, and an adhesive roller (3336) elastically contacts the lead frame to tear the film. The film-tearing clamp component (34) includes a clamp (342) with an adjustable angle to hold the film-tearing waste. The receiving mechanism (4) includes a second feeding component (41), a receiving component (42), a pushing component (43), a horizontal module (45), a lifting module (46), and a receiving component (47). The receiving component (42) and the pushing component (43) are located in the conveying channel of the second feeding component (41). The receiving plate (421) of the receiving component (42) carries the lead frame and adjusts its height so that the lead frame falls onto the second feeding component (41) and is conveyed forward. The pushing component (43) pushes the lead frame conveyed on the second feeding component (41) horizontally into the material box (44). The material box (44) is controlled by the horizontal module (45) and the lifting module (46) and placed on the receiving component (47).

8. A film-peeling machine for lead frames according to claim 7, characterized in that, It also includes a first feeding component (2), the travel of the transport module (31) is located between the first feeding component (2) and the receiving component (42), the worktable (11) is also provided with a waste discharge port (12), and the film tearing clamp component (34) is installed at the waste discharge port (12).

9. A film-peeling machine for a lead frame according to claim 7, characterized in that, The transport module (31) includes a motor and a screw mechanism driven by the motor after speed reduction, which drives the roller film tearing assembly (33) to move horizontally; The rotating assembly (32) includes a base plate (321), a first rotating cylinder (322) is mounted on the base plate (321), a rotating platform (323) is provided on the first rotating cylinder (322), a first suction cup assembly (324) is provided on the rotating platform (323), and an antistatic assembly (325) and a sensor are also installed on the side of the base plate (321). The roller film-tearing assembly (33) includes a first motor (331) and a screw mechanism driven by the first motor (331) after speed reduction. A first lifting plate (332) is provided on the screw mechanism. An adhesive film assembly (333), a second lifting cylinder (334), and a second suction cup assembly (337) are fixed on the first lifting plate (332). The fixing plate (3331) of the adhesive film assembly (333) is installed on the side of the first lifting plate (332). The first lifting plate (332) is provided with a first lifting cylinder (3332). The telescopic shaft of the first lifting cylinder (3332) is elastically connected to a floating plate (3333). A fixed plate (3333) is fixed on the floating plate (3333). There is a roller quick-release assembly (3338) and a first horizontal cylinder (3334). The roller quick-release assembly (3338) can clamp the roller mounting plate (3337) with the adhesive roller (3336) onto the floating plate (3333). The telescopic shaft of the first horizontal cylinder (3334) is connected to the pressure block (3335). The pressure block (3335) and the adhesive roller (3336) are arranged opposite each other in the horizontal direction. The telescopic shaft of the second lifting cylinder (334) is connected to the second lifting plate (336). The second lifting plate (336) is equipped with a first clamp cylinder (335). Two clamps are arranged opposite each other below the first clamp cylinder (335). The film-tearing clamp assembly (34) includes a second rotary cylinder (344) mounted on a workbench (11). A second clamp cylinder (343) is provided on the shaft of the second rotary cylinder (344). The second clamp cylinder (343) is provided with two opposing clamps (342). An air blowing assembly (341) is provided on one side of the clamps (342). The air blowing assembly (341) is mounted on the workbench (11) and blows air toward the clamps (342).

10. A film-peeling machine for a lead frame according to claim 7, characterized in that, The second feeding assembly (41) includes two belts, with a receiving assembly (42) and a pushing assembly (43) disposed between the two belts; The receiving plate (421) of the receiving assembly (42) is connected to a third lifting cylinder (422) below. The height adjustment of the receiving plate (421) allows the lead frame to be placed on the belt and conveyed forward. The pushing assembly (43) includes a second horizontal cylinder (431) fixed on the inclined plate, the inclined plate is movably mounted on the spring block seat and a spring (3339) is provided between the two, the spring block seat is fixed on the worktable (11), and the top height of the second horizontal cylinder (431) does not exceed the height of the belt. The horizontal module (45) includes a third horizontal cylinder (452), a third clamp cylinder (451) is fixed on the telescopic shaft of the third horizontal cylinder (452), and the two clamps of the third clamp cylinder (451) hold the material box (44). The lifting module (46) includes a second motor (461), which drives the lead screw mechanism after the second motor (461) slows down. The third horizontal cylinder (452) is installed on the nut seat of the lead screw mechanism. The receiving assembly (47) includes a third motor (471) and a synchronous belt (472) driven by the third motor (471) after speed reduction. Limiting plates and sensors are installed on both sides of the synchronous belt (472). The material box (44) is placed on the synchronous belt (472) and blocked and limited by the limiting plates. Several slots are processed on the opposite side walls inside the material box (44). A lead frame is stored between two slots of the same horizontal height.

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