A new type of compression strip

Abstract

The utility model relates to a new type of pressing strip of lead frame pressing strip technical field, including the pressing strip body, the pressing strip body includes first straight section, first arc section and second straight section, is provided with the screw hole on the first straight section. The utility model has high elasticity and anti -static characteristic, and the pressing degree of integration is adjusted to the maximum, has no scratch problem, and the pressing degree of integration can satisfy the pressing demand, and, meet dustless environment accessible product use, can completely solve the scratch problem of the pressing strip to the lead frame surface.

Description

Technical Field

[0001] This utility model relates to the field of lead frame pressure strip technology, and in particular to a novel pressure strip. Background Technology

[0002] Existing lead frame clamping strips include elastic clamping strips, polished clamping strips (narrow clamping strips), Teflon clamping strips, and ceramic clamping strips. Elastic clamping strips offer high elasticity, making it easy for users to adjust the clamping force, but require high-temperature tape to be applied to the back of the lead frame to prevent scratches. However, this high-temperature tape is prone to detachment, increasing instability during use. Polished clamping strips (narrow clamping strips) have low elasticity and are suitable for narrow frames, but due to their low clamping force, they are prone to incomplete clamping, leading to poor water flow. They are only suitable for special products like VSSOP8, limiting their application range. Teflon clamping strips are highly wear-resistant and do not cause scratches, but wear and tear can cause debris that can contaminate the product, affecting product quality and leading to customer complaints. Ceramic clamping strips also have high wear resistance and do not cause scratches, but their material is brittle and prone to breakage, posing a risk of damage during use.

[0003] Because the pressing force of the pressure strip is adjusted manually, it is difficult to control precisely. When the pressing force is too light, the material will not release water properly, affecting product quality and performance; when the pressing force is too heavy, the hard contact and friction between the metal pressure strip and the copper frame can easily cause scratches on the frame and expose the copper. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a novel pressure strip.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a novel pressure strip, comprising: a pressure strip body, the pressure strip body comprising a first straight section, a first arc-shaped section and a second straight section, wherein a screw hole is provided on the first straight section.

[0006] As a further description of the above technical solution:

[0007] The number of screw holes is two.

[0008] As a further description of the above technical solution:

[0009] The pressure strip body is made of PEK material.

[0010] As a further description of the above technical solution:

[0011] The width of the first straight segment is 5mm, the length of the first straight segment is 15mm, and the thickness of the first straight segment is 2mm.

[0012] As a further description of the above technical solution:

[0013] The thickness of the first arc segment is 1.6 mm, and the distance from the bottom of the first straight segment to the bottom of the second straight segment is 10 mm.

[0014] As a further description of the above technical solution:

[0015] The width of the second straight segment is 2mm, the length of the second straight segment is 20mm, and the thickness of the second straight segment is 1.2mm.

[0016] As a further description of the above technical solution:

[0017] The diameter of the screw hole is 3mm, and the distances between the screw hole and the short side of the first straight segment away from the first arc segment are 2mm and 8mm, respectively.

[0018] As a further description of the above technical solution:

[0019] The pressing strip body is used in the pressing strip machine. The pressing strip machine includes the pressing strip body, a connecting block, a cylindrical rod, and a fixing block. The pressing strip body and the connecting block are fixedly connected by screws through screw holes. The pressing strip body is mounted on the cylindrical rod through the connecting block for adjusting the Y-direction position of the pressing strip. The fixing block is used to fix the cylindrical rod and the entire pressing strip body, and for adjusting the overall X-direction position of the pressing strip body.

[0020] The present invention has the following beneficial effects: the pressure strip of the present invention has high elasticity and anti-static properties, and when the pressing force is adjusted to the maximum, there is no scratch problem. The pressing force can meet the pressing requirements. In addition, it is suitable for use in a dust-free environment where products can come into contact with it. It can completely solve the problem of the pressure strip scratching the surface of the lead frame. Attached Figure Description

[0021] Figure 1 This is a top view of a novel pressure strip proposed in this utility model;

[0022] Figure 2 This is a side sectional view of a novel pressure strip proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of a pressing machine for a novel pressing strip application proposed in this utility model.

[0024] Legend:

[0025] 1. Pressure strip body; 2. Connecting block; 3. Cylindrical rod; 4. Fixing block; 11. First straight section; 12. First arc-shaped section; 13. Second straight section; 14. Screw hole. Detailed Implementation

[0026] 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.

[0027] Reference Figure 1-3 This utility model provides an embodiment of a novel pressing strip, comprising a pressing strip body 1. The pressing strip body 1 includes a first straight segment 11, a first arc-shaped segment 12, and a second straight segment 13. Two screw holes 14 are provided on the first straight segment 11. The pressing strip body 1 is made of PEK material. PEK (polyetherketone) is a high-performance thermoplastic engineering plastic with many excellent properties. Its chemical structure is stable, exhibiting excellent chemical corrosion resistance. It can maintain its performance stability in complex chemical environments and is not easily reacted with various chemical substances it comes into contact with. This allows the pressing strip to maintain good physical and chemical properties even when facing potential chemical corrosion during long-term use, such as trace amounts of acids and alkalis that may be present in some production environments, ensuring its normal function as a pressing strip. From a mechanical perspective, PEK material has high strength and modulus, enabling the pressing strip body 1 to withstand certain pressure without easily deforming, providing a solid foundation for stable pressing operations. At the same time, it also has good toughness, which is different from some traditional brittle materials. For example, the ceramic pressure strip mentioned in the background technology is brittle and easy to break. This problem is avoided in the PEK material pressure strip of this utility model. In daily installation, debugging and long-term pressing use, even if it is subjected to a certain external impact or repeated stress, the pressure strip will not be easily damaged, which greatly extends its service life, reduces the cost of use and the risk of production interruption due to pressure strip damage.

[0028] The width of the first straight segment 11 is 5mm, the length of the first straight segment 11 is 15mm, and the thickness of the first straight segment 11 is 2mm. The thickness of the first arc segment 12 is 1.6mm. The distance from the bottom of the first straight segment 11 to the bottom of the second straight segment 13 is 10mm. The width of the second straight segment 13 is 2mm. The length of the first straight segment 11 is 20mm, and the thickness of the first straight segment 11 is 1.2mm. The diameter of the screw hole 14 is 3mm. The distances between the screw hole 14 and the short side of the first straight segment 11 away from the first arc segment 12 are 2mm and 8mm, respectively.

[0029] The pressing strip body 1 is used in the pressing strip machine. The pressing strip machine includes the pressing strip body 1, the connecting block 2, the cylindrical rod 3 and the fixing block 4. The pressing strip body 1 and the connecting block 2 are fixedly connected by two screws. The pressing strip body 1 is mounted on the cylindrical rod 3 through the connecting block 2 for adjusting the Y-direction position of the pressing strip. The fixing block 4 is used to fix the cylindrical rod 3 and the entire pressing strip body 1, and for adjusting the overall X-direction position of the pressing strip body 1.

[0030] Working principle: In actual operation, the pressure strip body 1 is first firmly connected to the connecting block 2 with two screws. Then, the connecting block 2 is installed on the cylindrical rod 3. At this time, the pressure strip body 1 can be adjusted in the Y direction by relying on the cylindrical rod 3. The operator moves the pressure strip body 1 along the cylindrical rod 3 according to the specific thickness, shape, and pressing process requirements of the lead frame to be pressed, and determines the appropriate position in the Y direction by using the corresponding adjustment device (such as a lifting handle, which can be configured according to the actual design).

[0031] Next, the cylindrical rod 3 and the pressure strip body 1 are fixed together using the fixing block 4. At the same time, the X-direction adjustment mechanism on the fixing block 4 is used to precisely align the pressure strip body 1 with the area of ​​the lead frame that needs to be pressed in the horizontal direction. This alignment process is crucial, as it directly affects the accuracy and effectiveness of the pressing, ensuring that the pressure strip can evenly cover and press onto all key parts of the lead frame, avoiding missed pressing or misalignment.

[0032] Once the pressing strip body 1 is in the correct X and Y direction positions, the pressing power device of the pressing machine (such as a cylinder, electric push rod, or other components that provide pressing power, depending on the machine design) is activated. The pressing power device applies pressure, which is transmitted to the pressing strip body 1 through the connecting block 2. Due to its unique structural design, including the rational layout of the first straight section 11, the first arc-shaped section 12, and the second straight section 13, as well as the precise dimensional parameters of each part, the pressing strip body 1 can uniformly and stably transmit the received pressure to the surface of the lead frame.

[0033] During the lamination process, the high elasticity of PEK material plays a crucial role. It can elastically deform according to the pressure, adaptively adjusting the lamination force. This ensures sufficient pressure for proper lamination of the material on the lead frame, preventing quality issues such as poor water drainage, while avoiding damage to the lead frame surface, such as scratches or exposed copper, due to excessive pressure. Furthermore, the anti-static properties of PEK material effectively prevent the generation and accumulation of static electricity in electrostatic-sensitive production environments, avoiding potential damage to products caused by static electricity, such as possible damage to electronic components, further improving product quality and the stability of the production process.

[0034] The coordinated operation of the entire pressing machine and the new pressing strip, through the precise cooperation of various components and the advantages of the pressing strip's own structure and material properties, achieves high-quality and high-precision pressing operation on the lead frame, meets the production process requirements, and solves many problems existing in the use of existing pressing strips, such as scratches, incomplete pressing, and easy damage, providing a reliable pressing solution for the production of related products.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel pressure strip, characterized in that: include: The pressing strip body (1) includes a first straight section (11), a first arc-shaped section (12), and a second straight section (13). The first straight section (11) is provided with screw holes (14), and there are two screw holes (14). The pressing strip body (1) is made of PEK material. The pressing strip body (1) is used in a pressing strip machine. The pressing strip machine includes the pressing strip body (1), a connecting block (2), a cylindrical rod (3), and a fixing block (4). The pressing strip body (1) and the connecting block (2) are fixedly connected by screws through the screw holes (14). The pressing strip body (1) is installed on the cylindrical rod (3) through the connecting block (2) for adjusting the Y-direction position of the pressing strip. The fixing block (4) is used to fix the cylindrical rod (3) and the entire pressing strip body (1), and for adjusting the overall X-direction position of the pressing strip body (1).

2. The novel pressure strip according to claim 1, characterized in that: The width of the first straight segment (11) is 5mm, the length of the first straight segment (11) is 15mm, and the thickness of the first straight segment (11) is 2mm.

3. The novel pressure strip according to claim 2, characterized in that: The thickness of the first arc segment (12) is 1.6 mm, and the distance from the bottom of the first straight segment (11) to the bottom of the second straight segment (13) is 10 mm.

4. A novel pressure strip according to claim 3, characterized in that: The width of the second straight segment (13) is 2mm, the length of the second straight segment (13) is 20mm, and the thickness of the second straight segment (13) is 1.2mm.

5. A novel pressure strip according to claim 4, characterized in that: The diameter of the screw hole (14) is 3mm, and the distances between the screw hole (14) and the short side of the first straight segment (11) away from the first arc segment (12) are 2mm and 8mm, respectively.

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