Lead frame raw material copper foil cleaning device

Abstract

A lead frame raw material copper foil cleaning device comprises a conveying track and a cleaning plug-in unit. The conveying track is provided with two parallel side plates, a plurality of rollers are arranged between the side plates at intervals along the length direction, one side plate is vertically provided with a mounting hole, the top of the side plate corresponding to the mounting hole is provided with a compression screw, and the conveying track is arranged at the feeding end of the lead frame stamping die. The cleaning plug-in comprises two pipe fittings which are arranged in parallel, and a preset interval is formed between the two pipe fittings; spraying holes are formed in the opposite sides of the two pipe fittings; the rear ends of the two pipe fittings are communicated with the same main pipeline, and a pipe joint is arranged at the tail end of the main pipeline. The front ends of the two pipe fittings penetrate through the mounting holes, and the copper foil penetrates through the space between the pipe fittings; the main pipeline penetrates through the mounting hole, and the pipe connector is used for being connected with compressed air or steam or heating gas. According to the scheme, the two faces of the copper foil can be effectively cleaned, oil stains and dust on the surface of the copper foil are removed, and therefore the stamping quality of the lead frame is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of lead frame raw material cleaning devices, and particularly relates to a copper foil cleaning device for lead frame raw materials. Background Art

[0002] The raw material of a lead frame is usually a copper foil coil. During the production, storage, and transportation of the copper foil, it is inevitable to be attached with oil stains and dust. The lead frame is usually formed by continuous die stamping. In the existing process, there is a lack of a cleaning step for the copper foil before using the copper foil to stamp the lead frame, resulting in the oil stains and dust attached to the surface of the copper foil being easily adhered to the surface of the die. Long-term accumulation is likely to cause the surface of the die to form a crust, resulting in pits on the surface of the stamped lead frame and even affecting the dimensional accuracy of the lead frame. Summary of the Utility Model

[0003] To solve the deficiencies of the existing technology, the utility model provides a copper foil cleaning device for lead frame raw materials, which can effectively clean both sides of the copper foil, remove the oil stains and dust on the surface of the copper foil, and thus ensure the stamping quality of the lead frame.

[0004] To achieve the purpose of the utility model, the following scheme is proposed:

[0005] A copper foil cleaning device for lead frame raw materials includes: a conveying track and a cleaning plug-in.

[0006] The conveying track is provided with two parallel side plates. A plurality of rollers are arranged at intervals along the length direction in the middle of the side plates for conveying the copper foil. One of the side plates is vertically provided with an installation hole, and a pressing screw is provided at the top of the side plate corresponding to the installation hole. The installation hole is located between two adjacent rollers. The conveying track is arranged at the feeding end of the lead frame stamping die;

[0007] The cleaning plug-in includes two parallel pipe fittings. There is a predetermined interval between the two pipe fittings. The width of the interval is greater than the thickness of the copper foil, and the length of the pipe fittings is greater than the width of the copper foil; spray holes are provided on the opposite sides of the two pipe fittings; the rear ends of the two pipe fittings are communicated with the same main pipe, and a pipe joint is provided at the end of the main pipe.

[0008] During assembly, the front ends of the two pipe fittings pass through the installation hole. One of the pipe fittings is located below the conveying plane of the conveying track, and the other pipe fitting is located above the conveying plane of the conveying track. The copper foil passes through between the two pipe fittings; the main pipe is passed through the installation hole, and the pressing screw presses on the surface of the main pipe. The pipe joint is used to connect compressed air, steam or heated gas.

[0009] The beneficial effect of the utility model is that: in this scheme, compressed air, steam or heated gas is injected into the pipe fittings to remove the oil stains and dust on the surface of the copper foil, avoiding the attachment of oil stains and dust on the die, and thus improving the stamping quality of the lead frame. Brief Description of the Drawings

[0010] The drawings described herein are only for illustrating selected embodiments and not all possible implementation manners, let alone intending to limit the scope of the present utility model.

[0011] Figure 1 The overall structural schematic diagram of the present application is shown.

[0012] Figure 2 The cross-sectional view of the present application is shown.

[0013] Markings in the figure: conveying track - 1, side plate - 11, mounting hole - 111, positioning hole - 112, partition - 113, roller - 12, compression screw - 2, cleaning plug - 3, pipe fitting - 31, injection hole - 311, main pipe - 32, pipe joint - 33. Detailed Description of the Embodiments

[0014] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will describe the implementation manners of the present utility model in detail with reference to the drawings. However, the embodiments described herein are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0015] As Figure 1 , Figure 2 shown, a copper foil cleaning device for lead frame raw materials includes: a conveying track 1 and a cleaning plug 3.

[0016] The conveying track 1 is provided with two parallel side plates 11. A plurality of rollers 12 are arranged at intervals along the length direction in the middle of the side plates 11 for conveying the copper foil. One of the side plates 11 is vertically provided with a mounting hole 111. A compression screw 2 is provided at the top of the side plate 11 corresponding to the mounting hole 111. The mounting hole 111 is located between two adjacent rollers 12. The conveying track 1 is arranged at the feeding end of the lead frame stamping die.

[0017] The cleaning plug 3 includes two parallel pipe fittings 31. There is a predetermined interval between the two pipe fittings 31. The width of the interval is greater than the thickness of the copper foil, and the length of the pipe fitting 31 is greater than the width of the copper foil. Injection holes 311 are provided on the opposite sides of the two pipe fittings 31. The rear ends of the two pipe fittings 31 are communicated with the same main pipe 32, so the interiors of the two pipe fittings 31 are mutually communicated. A pipe joint 33 is provided at the end of the main pipe 32.

[0018] During assembly, the front ends of the two pipe fittings 31 pass through the mounting hole 111. One of the pipe fittings 31 is located below the conveying plane of the conveying track 1, and the other pipe fitting 31 is located above the conveying plane of the conveying track 1. The copper foil passes through between the two pipe fittings 31. The main pipe 32 passes through the mounting hole 111. The compression screw 2 presses on the surface of the main pipe 32. The pipe joint 33 is used to connect compressed air, steam or heated gas.

[0019] When inserting the copper foil into the stamping die of the lead frame for the first time, set the copper foil roll on the discharging turntable or rotating shaft, pull out the head of the copper foil, pull the copper foil onto the conveying track 1, pass the copper foil through between the two pipe fittings 31, and then introduce the head of the copper foil into the die. Or first lay the copper foil on the conveying track 1, introduce the head of the copper foil into the die, and then insert the cleaning plug 3 into the mounting hole 111; during the stamping process, inject compressed air, steam or heating gas into the two pipe fittings 31 through the pipe joint 33 to remove the oil stains and dust on the surface of the copper foil, thereby improving the cleanliness of the die and avoiding affecting the quality of the lead frame. In this solution, only the main pipeline 32 is provided at one end of the pipe fitting 31, aiming to make the front ends of the two pipe fittings 31 have an open structure, so as to facilitate the loading and unloading of the cleaning plug 3 during the stamping process and facilitate the later maintenance and repair of the cleaning plug 3.

[0020] Preferably, as Figure 1 shown, the mounting hole 111 is a rectangular hole structure, and the outer contour of the main pipeline 32 matches the mounting hole 111 to prevent the main pipeline 32 from rotating and improve the installation stability of the cleaning plug 3.

[0021] Preferably, as Figure 1 、 Figure 2 shown, the other side plate 11 is vertically provided with positioning holes 112 corresponding one by one to the mounting holes 111. During assembly, the front ends of the two pipe fittings 31 are both inserted into the positioning holes 112, so that both ends of the cleaning plug 3 have a limiting structure, thereby increasing the installation stability and installation position accuracy of the cleaning plug 3.

[0022] Further preferably, as Figure 1 、 Figure 2 shown, a partition plate 113 is provided in the middle of the positioning hole 112. During assembly, the partition plate 113 is clamped between the two pipe fittings 31 to fix the interval between the two pipe fittings 31 and prevent the interval from shrinking due to the deformation of the two pipe fittings 31, affecting the passage of the copper foil.

[0023] Further preferably, as Figure 1 、 Figure 2 shown, both the upper and lower sides of the end of the partition plate 113 facing the mounting hole 111 are inclined surface structures to facilitate the insertion of the pipe fitting 31.

[0024] Preferably, as Figure 1As shown, a plurality of mounting holes 111 are formed along the length direction of the side plate 11, and are all located between adjacent rollers 12. Specifically, the mounting holes 111 can be arranged between a group of adjacent rollers 12, or can be arranged between multiple adjacent rollers 12. Cleaning inserts 3 are provided in all the mounting holes 111. The cleaning inserts 3 arranged along the conveying direction of the conveying track 1 are connected to steam, compressed air and heating gas respectively. Since steam has high-temperature water molecules, it can better remove oil stains and dust. Compressed air can quickly blow off the water droplets formed by steam on the copper foil, and the heating gas is used to dry the copper foil.

[0025] Preferably, as Figure 1 shown, the pipe fitting 31 has a rectangular pipe structure for easy processing and manufacturing.

[0026] The above are only the preferred embodiments of the present invention, and do not represent the only or limit the present invention. Those skilled in the art should understand that without departing from the scope of the present invention, various changes or equivalent substitutions made to the present invention all fall within the scope of protection of the present invention.

Claims

1. A lead frame raw material copper foil cleaning device, characterized in that: include: A conveying track (1) is provided with two mutually parallel side plates (11), a plurality of rollers (12) are arranged at intervals in the middle of the side plates (11) along the length direction, and are used to convey copper foil, one of the side plates (11) is vertically provided with a mounting hole (111), a clamping screw (2) is arranged at the top of the side plate (11) corresponding to the mounting hole (111), and the mounting hole (111) is located between two adjacent rollers (12), and the conveying track (1) is arranged at the feed end of the lead frame stamping die; The cleaning plug-in (3) comprises two pipes (31) arranged in parallel, a predetermined interval being provided between the two pipes (31), the width of the interval being greater than the thickness of the copper foil, and the length of the pipe (31) being greater than the width of the copper foil; a spray hole (311) is provided on opposite sides of the two pipes (31); rear ends of the two pipes (31) are connected to the same main pipe (32), and a pipe joint (33) is provided at the end of the main pipe (32); During assembly, the front ends of the two pipe fittings (31) pass through the mounting hole (111), one pipe fitting (31) is located below the conveying plane of the conveying track (1), and the other pipe fitting (31) is located above the conveying plane of the conveying track (1), and the copper foil passes between the pipe fittings (31); the main pipe (32) is inserted into the mounting hole (111), the clamping screw (2) is clamped on the surface of the main pipe (32), and the pipe joint (33) is used to connect compressed air, steam or heating gas.

2. A lead frame raw material copper foil cleaning device according to claim 1, characterized in that: The mounting hole (111) is a rectangular hole structure, and the outer contour of the main pipeline (32) matches the mounting hole (111).

3. The lead frame raw material copper foil cleaning device according to claim 1, characterized in that: The other side plate (11) is vertically provided with positioning holes (112) corresponding one to one with the mounting holes (111). During assembly, the front ends of the two pipe fittings (31) are inserted into the positioning holes (112).

4. A lead frame raw material copper foil cleaning device according to claim 3, characterized in that: A partition plate (113) is provided in the middle of the positioning hole (112); during assembly, the partition plate (113) is clamped between the two pipe fittings (31).

5. A lead frame raw material copper foil cleaning device according to claim 4, characterized in that: The upper and lower sides of one end of the partition plate (113) facing the mounting hole (111) are both inclined structures.

6. A lead frame raw material copper foil cleaning device according to claim 1 or 3, characterized in that: A plurality of mounting holes (111) are provided along the length direction of the side plate (11) and are all located between adjacent rollers (12). Cleaning plug-ins (3) are provided in the mounting holes (111). The cleaning plug-ins (3) are provided along the conveying direction of the conveying track (1) and are connected to steam, compressed air and heating gas.

7. The lead frame raw material copper foil cleaning device according to claim 1, characterized in that: The pipe fitting (31) is a rectangular pipe structure.

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