Lead frame adaptive tension film pasting machine

Abstract

The utility model discloses a kind of for lead frame self-adapting tension film sticking machine, including connecting frame, extension plate and multiple groups of hot-pressing roller, arranging detection adjusting mechanism is provided on the extension plate, and the connecting frame between two groups and located one side of arranging detection adjusting mechanism is provided with tension positioning mechanism, and the connecting frame and located one side of hot-pressing roller are fixedly installed with the impurity bonding mechanism that material surface impurity is not interruptedly bonded.The utility model sets up arranging detection adjusting mechanism, and the material film tension of conveying can be controlled, prevent material transition tensioning or loose and cause coating uneven, and the tension positioning mechanism set up can make material film always present tensioning state, when preventing adjusting not in time and affecting coating effect when tension adjustment, and the impurity bonding mechanism set up can prevent foreign impurities etc. from being attached on lead frame, and material can be continuously adsorbed, and it is not necessary to stop maintenance when replacing.

Description

Technical Field

[0001] This utility model relates to the field of lead frame processing technology, specifically to an adaptive tension film applicator for lead frames. Background Technology

[0002] A lead frame is a key structural component in semiconductor packaging, primarily used to support the integrated circuit chip (die), provide electrical connections between the chip and external circuitry, and aid in heat dissipation. In the leadframe etching process, dry film application is a critical step, and the stability of its tension control directly determines the precision and yield of the etched circuitry. Currently, most dry film application systems rely on semi-automatic or fixed-parameter tension control systems. Furthermore, existing tension control methods generally suffer from lag in tension response and require frequent manual intervention, making it difficult to guarantee uniformity. This has become a common technical bottleneck restricting the manufacturing of high-precision, high-consistency leadframes. Therefore, we propose an adaptive tension dry film application machine for leadframes. Utility Model Content

[0003] The purpose of this invention is to provide an adaptive tension film applicator for lead frame to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an adaptive tension film applicator for lead frame, comprising a support base, a connecting frame fixedly mounted on the top of the support base, an extension plate fixedly mounted on one side of one set of the connecting frames, multiple sets of hot-pressing rollers arranged between two sets of the connecting frames, a sorting and detection adjustment mechanism for adjusting and detecting material tension provided on the extension plate, a tensioning and positioning mechanism for keeping the material always taut provided between the two sets of the connecting frames and on one side of the sorting and detection adjustment mechanism, and an impurity bonding mechanism for continuously bonding impurities on the material surface fixedly mounted on the connecting frame and on one side of the hot-pressing rollers.

[0005] Furthermore, the sorting, detection, and adjustment mechanism includes a drive motor, an air shaft, a tension sensor, and an auxiliary connecting roller. The drive motor is fixedly installed on the extension plate, and the output end of the drive motor is fixedly connected to the air shaft. A tension sensor for detecting material tension is fixedly installed on the extension plate and obliquely above the air shaft. An auxiliary connecting roller is fixedly installed on the connecting frame and obliquely below the tension sensor.

[0006] Furthermore, the tensioning and positioning mechanism includes a connecting shaft, a connecting piece, a first rotating shaft, and a sleeve. The connecting shaft is fixedly installed on the connecting frame, and the connecting piece is rotatably connected to the outside of the connecting shaft. The two sets of connecting pieces are rotatably connected to each other through the first rotating shaft via a sleeve.

[0007] Furthermore, the impurity bonding mechanism includes a second rotating shaft, an adjusting seat, a mounting plate, a third rotating shaft, and a bonding roller. The mounting plate is rotatably connected to the connecting frame via the second rotating shaft. An adjusting seat is fixedly connected to one end of the second rotating shaft. Two sets of third rotating shafts are provided on one side of the second rotating shaft. A bonding roller is fixedly connected to the outside of the third rotating shaft. Two sets of locking grooves are provided on the adjusting seat. A positioning bolt that is inserted into the connecting frame is provided inside the locking groove.

[0008] Furthermore, the tension sensor, auxiliary connecting roller, and sleeve are all made of stainless steel.

[0009] Furthermore, both the connecting piece and the first rotating shaft are made of PE material.

[0010] Compared with the prior art, the present invention has the following advantages: the multiple sets of hot-pressing rollers provided by the present invention can perform hot-pressing treatment on the lead frame and the material film; the subsequent sorting, detection and adjustment mechanism can control the tension of the conveyed material film to prevent the material from being overly tense or loose, resulting in uneven film coating; the tensioning and positioning mechanism can ensure that the material film is always in a tense state, preventing untimely adjustment from affecting the film coating effect; and the impurity bonding mechanism can prevent external impurities from adhering to the lead frame and can continuously adsorb impurities without stopping the machine for maintenance when replacing. Furthermore, the sorting and inspection mechanism is located above and to the side of the hot press roller. This design prevents impurities from falling directly onto the hot press roller when the material membrane is replaced. Attached Figure Description

[0011] Figure 1 This is a first perspective structural diagram of the present invention; Figure 2 This is a second perspective view of the structure of this utility model; Figure 3 This is a three-dimensional structural diagram of the present invention after removing one set of connecting frames.

[0012] In the diagram: 1. Support base; 2. Connecting frame; 3. Extension plate; 4. Hot press roller; 5. Sorting, inspection and adjustment mechanism; 6. Tensioning and positioning mechanism; 7. Impurity bonding mechanism; 8. Drive motor; 9. Air shaft; 10. Tension sensor; 11. Auxiliary connecting roller; 12. Connecting shaft; 13. Connecting piece; 14. First rotating shaft; 15. Sleeve; 16. Second rotating shaft; 17. Adjusting seat; 18. Mounting piece; 19. Third rotating shaft; 20. Bonding roller; 21. Locking groove; 22. Positioning bolt. Detailed Implementation

[0013] 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.

[0014] Please see Figures 1-3 This utility model provides a technical solution: an adaptive tension film applicator for lead frame, including a support base 1, a connecting frame 2 fixedly installed on the top of the support base 1, an extension plate 3 fixedly installed on one side of one set of connecting frames 2, multiple sets of hot pressing rollers 4 arranged between two sets of connecting frames 2, a sorting and detection adjustment mechanism 5 for adjusting and detecting the tension of the material is provided on the extension plate 3, a tensioning and positioning mechanism 6 for keeping the material always taut is provided between two sets of connecting frames 2 and on one side of the sorting and detection adjustment mechanism 5, and an impurity bonding mechanism 7 for continuously bonding impurities on the surface of the material is fixedly installed on the connecting frame 2 and on one side of the hot pressing rollers 4.

[0015] The multiple sets of hot-pressing rollers 4 can perform hot-pressing treatment on the lead frame and the material film. The sorting, detection and adjustment mechanism 5 can control the tension of the conveyed material film to prevent the material from being overly tense or loose, which would cause uneven film coating. The tensioning and positioning mechanism 6 can keep the material film in a taut state at all times, and prevent the film coating effect from being affected by untimely adjustment when adjusting the tension. The impurity adhesion mechanism 7 can prevent external impurities from adhering to the lead frame and can continuously adsorb impurities without stopping the machine for maintenance when replacing them.

[0016] Please see Figures 1-3 The sorting, detection and adjustment mechanism 5 includes a drive motor 8, an air shaft 9, a tension sensor 10 and an auxiliary connecting roller 11. The drive motor 8 is fixedly installed on the extension plate 3. The output end of the drive motor 8 is fixedly connected to the air shaft 9. The tension sensor 10 for detecting the tension of the material is fixedly installed on the extension plate 3 and located diagonally above the air shaft 9. The auxiliary connecting roller 11 is fixedly installed on the connecting frame 2 and located diagonally below the tension sensor 10.

[0017] The air shaft 9 can support and position the film roll that needs to be coated. Then the film passes above the tension sensor 10 and above the auxiliary connecting roller 11, and passes below the tensioning and positioning mechanism 6. This allows the pressure of the tension sensor 10 to be changed when the film is always in a taut or loose state. The controller can then control the speed of the drive motor 8 to increase or decrease, thereby preventing the film from being over-tightened or loosened.

[0018] Please see Figures 1-3 The tensioning and positioning mechanism 6 includes a connecting shaft 12, a connecting piece 13, a first rotating shaft 14, and a sleeve 15. The connecting shaft 12 is fixedly installed on the connecting frame 2. The connecting piece 13 is rotatably connected to the outside of the connecting shaft 12. The sleeve 15 is rotatably connected between the two sets of connecting pieces 13 through the first rotating shaft 14.

[0019] The rotating sleeve 15 and the connecting piece 13 rotate at an angle along the connecting shaft 12. The material film to be coated is then passed under the sleeve 15. The inclined sleeve 15 can then squeeze the material film, keeping it in a taut state.

[0020] Please see Figures 1-3 The impurity bonding mechanism 7 includes a second rotating shaft 16, an adjusting seat 17, a mounting plate 18, a third rotating shaft 19, and a bonding roller 20. The mounting plate 18 is rotatably connected to the connecting frame 2 via the second rotating shaft 16. The adjusting seat 17 is fixedly connected to one end of the second rotating shaft 16. Two sets of third rotating shafts 19 are provided on one side of the second rotating shaft 16. The bonding roller 20 is fixedly connected to the outside of the third rotating shaft 19. Two sets of locking grooves 21 are provided on the adjusting seat 17. The locking grooves 21 are provided with positioning bolts 22 that are inserted into the connecting frame 2.

[0021] The adhesive roller 20 is positioned close to one of the sets of hot-pressing rollers 4. The adhesive roller 20 can then contact the outer wall of the material film to adhere and remove impurities. When one set of adhesive rollers 20 needs to be cleaned, the positioning bolt 22 is removed, and the adjusting seat 17 is rotated to adjust the position of the two sets of adhesive rollers 20. After the position adjustment is completed, the other set of adhesive rollers 20 contacts the material film again to re-adhere. Then, the positioning bolt 22 is used to reposition and lock the adjusting seat 17. In this way, when cleaning the adhesive rollers 20, the other set of adhesive rollers 20 can always contact and adhere to the material film.

[0022] Please see Figures 1-3 The tension sensor 10, auxiliary connecting roller 11 and sleeve 15 are all made of stainless steel, while the connecting piece 13 and the first rotating shaft 14 are made of PE. The stainless steel components can prevent them from contaminating the material film, while the PE materials of the connecting piece 13 and the first rotating shaft 14 are strong and relatively lightweight.

[0023] In operation, firstly, the multiple sets of hot-pressing rollers 4 heat-press the lead frame and the material film. Then, the sorting, detection, and adjustment mechanism 5 controls the tension of the conveyed material film, preventing excessive tension or looseness that could cause uneven coating. The tensioning and positioning mechanism 6 ensures the material film remains taut, preventing untimely tension adjustments that could affect the coating effect. The impurity adhesion mechanism 7 prevents external impurities from adhering to the lead frame and continuously adsorbs impurities without requiring downtime for replacement. The air shaft 9 positions and carries the material film roll to be coated. The material film then passes above the tension sensor 10 and the auxiliary connecting roller 11, and below the tensioning and positioning mechanism 6. The tension sensor 10 is adjusted based on whether the material film remains taut or loose, allowing the controller to control the tension. The speed of the drive motor 8 is increased or decreased to prevent the material film from becoming overly tensile or loose. The rotating sleeve 15 and connecting piece 13 rotate at an angle along the connecting shaft 12. The material film to be coated is then passed under the sleeve 15. The inclined sleeve 15 then squeezes the material film, keeping it taut. The adhesive roller 20 is positioned close to one of the hot pressing rollers 4. The adhesive roller 20 then contacts the outer wall of the material film to bond and remove impurities. When one set of adhesive rollers 20 needs cleaning, the positioning bolt 22 is removed, and the adjusting seat 17 is rotated to adjust the position of the two sets of adhesive rollers 20. After the position adjustment is completed, the other set of adhesive rollers 20 contacts the material film again for re-bonding. The positioning bolt 22 is then used to re-lock the adjusting seat 17. This ensures that the other set of adhesive rollers 20 can always contact and bond the material film when cleaning the adhesive rollers 20.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lead frame adaptive tension film applicator, comprising a support base (1), wherein a connecting frame (2) is fixedly mounted on the top of the support base (1), wherein an extension plate (3) is fixedly mounted on one side of one set of the connecting frames (2), and a plurality of hot-pressing rollers (4) are arranged between two sets of the connecting frames (2), characterized in that: The extension plate (3) is provided with a sorting and detection adjustment mechanism (5) for adjusting and detecting the tension of the material. Between the two sets of connecting frames (2) and on one side of the sorting and detection adjustment mechanism (5), a tensioning and positioning mechanism (6) is provided to keep the material always tense. On the connecting frame (2) and on one side of the hot pressing roller (4), an impurity bonding mechanism (7) for continuously bonding impurities on the surface of the material is fixedly installed.

2. The adaptive tension laminating machine for lead frames according to claim 1, characterized in that: The sorting, detection and adjustment mechanism (5) includes a drive motor (8), an air shaft (9), a tension sensor (10), and an auxiliary connecting roller (11). The drive motor (8) is fixedly installed on the extension plate (3), and the output end of the drive motor (8) is fixedly connected to the air shaft (9). The tension sensor (10) for detecting the tension of the material is fixedly installed on the extension plate (3) and above the air shaft (9). The auxiliary connecting roller (11) is fixedly installed on the connecting frame (2) and below the tension sensor (10).

3. The adaptive tension laminating machine for lead frames according to claim 2, characterized in that: The tensioning and positioning mechanism (6) includes a connecting shaft (12), a connecting piece (13), a first rotating shaft (14), and a sleeve (15). The connecting shaft (12) is fixedly installed on the connecting frame (2). The connecting piece (13) is rotatably connected to the outside of the connecting shaft (12). The two sets of connecting pieces (13) are rotatably connected to the sleeve (15) through the first rotating shaft (14).

4. The adaptive tension laminating machine for lead frames according to claim 3, characterized in that: The impurity bonding mechanism (7) includes a second rotating shaft (16), an adjusting seat (17), a mounting plate (18), a third rotating shaft (19), and a bonding roller (20). The mounting plate (18) is rotatably connected to the connecting frame (2) via the second rotating shaft (16). The adjusting seat (17) is fixedly connected to one end of the second rotating shaft (16). Two sets of third rotating shafts (19) are provided on one side of the second rotating shaft (16). The bonding roller (20) is fixedly connected to the outside of the third rotating shaft (19). Two sets of locking grooves (21) are provided on the adjusting seat (17). The locking grooves (21) are provided with positioning bolts (22) that are inserted into the connecting frame (2).

5. A self-adaptive tension laminating machine for lead frames according to claim 4, characterized in that: The tension sensor (10), auxiliary connecting roller (11), and sleeve (15) are all made of stainless steel.

6. The adaptive tension laminating machine for lead frames according to claim 4, characterized in that: The connecting piece (13) and the first rotating shaft (14) are both made of PE material.

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