A lead wire uniform flattening control device

Abstract

The present invention provides a lead uniform flattening control device applied to the field of integrated circuit packaging. The device can achieve precise control of the flattening amount of balanced hydraulic rolling by adjusting the vertical distance of the dual lasers, thereby facilitating precise control of the lead flattening amount, improving the surface force uniformity, making the thickness of the flat head consistent after flattening, and effectively avoiding the defective rate problem caused by uneven lead flattening thickness, greatly increasing the reliability of package lead testing. Compared with the existing technology, the lead flattening precision control device of this scheme has a simple principle, high precision, and wide adaptability, and can achieve precise control of the flattening amount of leads of various types; in addition, in conjunction with the setting of the deflection ring, it can effectively monitor whether the upper plane rolling and the lower plane rolling simultaneously generate upper and lower extrusion pressure on the lead, thereby effectively avoiding the situation in which the lead moves out of the lead hole due to the asynchronous upper and lower forces during flattening, causing the flat head size to increase, thereby further improving the precision during flattening and improving the yield rate.

Description

Technical Field

[0001] The present application relates to the field of integrated circuit packaging, and in particular to a device for controlling uniform flattening of leads. Background Art

[0002] In the field of integrated circuit packaging, lead flattening is currently mostly done by tooling or electric spark flattening. Most flattening tools have the advantages of simple structure, easy installation, and convenient operation. However, problems such as difficulty in controlling the flattening accuracy of the same model and batch, uneven thickness, poor tooling adaptability, and damage to the lead surface quality often occur. For example, patent CN216324790U often suffers from quality control problems such as damage to the melt seal and affecting airtightness because it adopts tooling flattening after sealing. Using conventional electric spark technology, lead flattening takes a long time and has high processing costs.

[0003] Since package leads often require high accuracy in flattening, existing technologies are difficult to meet the requirements of precision control. Summary of the Invention

[0004] The purpose of this application is to accurately control the flattening amount of the same type of leads required for the package when packaging an integrated circuit, effectively avoid the defective rate problem caused by uneven lead flattening thickness, thereby increasing the reliability of the package lead test, and provide a lead uniform flattening control device compared to the existing technology, including a pedestal, a digital display chassis fixedly connected to the upper left end of the pedestal, a numerical control panel installed on the digital display chassis, a limit assembly connected to the middle of the upper end of the pedestal, an upper flat roll and a lower flat roll are respectively provided on the upper and lower sides of the limit assembly, a balancing hydraulic roll is also installed on the upper end of the upper flat roll, the upper flat roll and the lower flat roll are driven by an electric cylinder, a flattening control assembly is provided on the upper end of the pedestal, and a flattening control assembly is provided. The component includes a laser receiver and an adjustable dual laser exciter located at the left and right upper ends of the base respectively. A laser signal light is installed on the upper end of the laser receiver, and the laser receiver is located in front of the digital display chassis. The limit component includes two relative magnetic positioning slides, and the magnetic positioning slides are connected to the limit internal module. The left and right inner walls of the limit internal module are both provided with positioning grooves, and the limit internal module is slidably connected to the magnetic positioning slides through the positioning grooves. There are two wire passing holes on the same horizontal line on the limit internal module, and a lead is inserted in the wire passing hole. The end of the lead extends between the two limit internal modules, and the upper flat rolling end and the lower flat rolling end are both facing the position between the two.

[0005] By setting the dual laser vertical distance of the adjustable dual laser exciter, the flattening amount of the balanced hydraulic rolling can be accurately controlled, thereby effectively reducing the flattening amount of the lead, improving the uniformity of the surface force, and making the thickness of the flat head consistent after flattening, effectively avoiding the defective rate problem caused by uneven lead flattening thickness, greatly increasing the reliability of the package lead test, and compared with the existing technology, the lead flattening precision control device of this scheme has a simple principle, high accuracy, and wide adaptability, and can achieve precise control of the flattening amount of various types of leads; in addition, in conjunction with the setting of the deflection ring, it can effectively monitor whether the upper plane rolling and the lower plane rolling simultaneously generate upper and lower extrusion pressure on the lead, thereby effectively avoiding the situation where the lead moves outside the lead hole due to the asynchronous upper and lower forces during flattening, causing the flat head size to increase, thereby further improving the accuracy of flattening and improving the yield rate.

[0006] Furthermore, the adjustable dual laser exciter is provided with two upper and lower laser emission ports, and the distance between the two laser emission ports is adjustable. The vertical distance between the laser beams emitted by the two laser emission ports is the thickness of the lead after flattening, so that the flattening amount is adjustable, thereby making this solution adaptable to the needs of different flattening amounts, and can achieve precise control of the flattening amount of various types of leads.

[0007] Furthermore, the inner limit module fixes the lead in the vertical direction, and the positioning slide groove adsorbs and fixes the lead in the horizontal direction, thereby effectively maintaining the stability of the lead when it is flattened.

[0008] Optionally, the inner diameter of the wire passing hole is consistent with the diameter of the lead, and the inner diameter of the wire passing hole mouth is not less than 2-5 times the inner diameter of the wire passing hole. The wire passing hole mouth is fixedly embedded with a deflection ring. Through the setting of the deflection ring, the consistency of the upper and lower forces on the part to be flattened during flattening can be monitored, effectively avoiding the situation where the upper and lower forces are not synchronized, resulting in the lead part moving outward, causing the final flattened part to be larger or offset, thereby effectively ensuring the accuracy of flattening and improving the yield rate.

[0009] Furthermore, two deflection measurement signal lights are installed on the laser receiver. The deflection measurement ring is connected to the deflection measurement signal light signal. The deflection measurement signal light is used to indicate whether the part to be flattened is subjected to force synchronously, so that the staff can timely understand and control the uniform force on the lead wire during flattening.

[0010] Furthermore, a cavity is excavated inside the deflection measuring ring, and open contacts are fixedly connected to the upper and lower inner walls of the cavity. The end of the open contact facing the lead is a soft structure with elastic sealing, and the other end of the open contact is a hard structure. The boundary line between the soft and hard opening contact is located at the center line of the opening of the opening contact, and the open contact is filled with a liquid medium. The left and right inner walls of the cavity are fixedly connected to the supporting plates respectively. Along the counterclockwise direction, the two open contacts are respectively connected to the adjacent supporting plates with a contact bent rod. The contact bent rod includes an outer sleeve fixedly connected between the open contact and the supporting plate and an inner support tube located inside the outer sleeve. The end of the inner support tube is fixedly connected to a contact head, and the diameter of the contact head is consistent with the inner diameter of the outer sleeve, so that the outer sleeve can effectively limit the stability of the contact head in the outer sleeve. The ends of the two contact heads away from the inner support tube are connected to self-resetting signal switches. The two self-resetting signal switches respectively control the opening and closing of two deflection detection signal lights. When the upper plane rolling first applies a downward force to the lead, the open contact below is subjected to force, so that the self-resetting signal switch on the corresponding contact head is squeezed and triggered. At this time, only one of the deflection detection signal lights is lit. Similarly, when the lower plane rolling first applies an upward force to the lead, only the other deflection detection signal light is lit. When the force interval above and below the lead is small or the force is synchronized, both deflection detection signal lights cannot be lit, indicating that the flattening process is more accurate and stable at this time. Based on the lit deflection signal light, it can be determined whether the lead is subjected to force first from the bottom or the top.

[0011] Furthermore, the inner support tube located above the supporting plate is fixedly connected to the adjacent open contact, and the inner support tube and the opening of the open contact are communicated with each other. The inner support tube is an elastic sealing structure. When the lead is first subjected to force below, the end of the lead to be flattened is offset upward, causing the upper open contact to be subjected to force first. At this time, the liquid medium inside it is squeezed into the contact bending rod, causing the inner support tube to stretch, driving the contact head to move toward the supporting plate and squeeze the contact, so that the deflection measurement signal light is lit.

[0012] Furthermore, the inner support tube located below the supporting plate is fixedly connected to the adjacent supporting plate. The inner support tube is a hard structure, and the mouth of the corresponding open contact is fixedly connected to a force protrusion. The force protrusion is located on the inner side of the outer sleeve. When the upper part of the lead is subjected to force first, the end of the lead to be flattened is offset downward, and the lower open contact is subjected to force. At this time, the liquid medium pushes the force protrusion to deform and move toward the contact head, so that the signal switch on the contact head is turned on, and then the corresponding deflection measurement signal light is lit.

[0013] Compared with the existing technology, the advantages of this application are:

[0014] (1) By setting the dual laser vertical distance of the adjustable dual laser exciter, the flattening amount of the balanced hydraulic rolling can be accurately controlled, thereby effectively reducing the flattening amount of the lead, improving the uniformity of the surface force, and making the thickness of the flat head consistent after flattening, effectively avoiding the defective rate problem caused by uneven lead flattening thickness, greatly increasing the reliability of the package lead test, and compared with the existing technology, the lead flattening precision control device of this scheme has a simple principle, high accuracy, and wide adaptability, and can achieve precise control of the flattening amount of various types of leads; in addition, with the setting of the deflection ring, it can effectively monitor whether the upper plane rolling and the lower plane rolling simultaneously generate upper and lower extrusion pressure on the lead, thereby effectively avoiding the situation that the lead moves outside the lead hole due to the asynchronous upper and lower forces during flattening, causing the flat head size to increase, thereby further improving the accuracy of flattening and improving the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the front view of this application;

[0016] Figure 2 A top view of the limiting assembly of this application;

[0017] Figure 3 This is a schematic diagram of the structure of the adjustable dual laser exciter of this application;

[0018] Figure 4 This is a schematic structural diagram of the laser receiver portion of this application;

[0019] Figure 5 This is a schematic diagram of the structure of the lead part of this application before flattening;

[0020] Figure 6 This is a schematic diagram of the lead structure after flattening in this application;

[0021] Figure 7 This is a schematic diagram of the structure of the cross section of the deflection ring of this application;

[0022] Figure 8 This is a schematic structural diagram of the upper contact bending rod portion of the present application;

[0023] Figure 9 This is a schematic diagram of the structure of the contact located at the bottom of this application.

[0024] Description of the numbers in the figure:

[0025] 1 digital display chassis, 2 CNC panel, 31 laser signal light, 32 deflection signal light, 4 limit assembly, 41 magnetic positioning slide, 42 limit inner module, 43 positioning slide, 44 wire hole, 5 balanced hydraulic rolling, 61 upper flat rolling, 62 lower flat rolling, 7 pedestal, 71 laser receiver, 72 adjustable dual laser exciter; 8 deflection ring, 81 cavity, 9 contact bending rod, 91 outer sleeve, 92 inner support tube, 93 contact head, 10 bearing plate, 11 open contact, 12 force protrusion. DETAILED DESCRIPTION

[0026] The embodiments will be combined with the drawings in the specification to clearly and completely describe the technical solution of this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of this application.

[0027] Example 1:

[0028] The present invention provides a device for controlling the uniform flattening of a lead wire. Figure 1 In the figure, a represents a dual laser, including a pedestal 7, a digital display chassis 1 is fixedly connected to the upper left end of the pedestal 7, a numerical control panel 2 is installed on the digital display chassis 1, a limit component 4 is connected to the middle of the upper end of the pedestal 7, an upper flat rolling 61 and a lower flat rolling 62 are respectively provided on the upper and lower sides of the limit component 4, a balancing hydraulic rolling 5 is also installed on the upper end of the upper flat rolling 61, the upper flat rolling 61 and the lower flat rolling 62 are both driven by electric cylinders, a flattening control component is provided on the upper end of the pedestal 7, a wire position pressure adjustment knob is installed on the numerical control panel 2, which is used to adjust the flattening amount of the balanced hydraulic rolling 5. The specific adjustment principle is the existing technology and will not be elaborated on here.

[0029] See also Figure 2 In the figure, c represents the lead, and the limit assembly 4 includes two opposite magnetic positioning slides 41, and the magnetic positioning slide 41 is connected to the limit inner module 42. The left and right inner walls of the limit inner module 42 are both provided with positioning grooves 43, and the limit inner module 42 is slidably connected to the magnetic positioning slide 41 through the positioning grooves 43. Two wire passing holes 44 located on the same horizontal line are opened on the limit inner module 42, and a lead is inserted into the wire passing hole 44. The end of the lead extends between the two limit inner modules 42, and the ends of the upper flat rolling 61 and the lower flat rolling 62 are both facing the position between the two 22. The limit inner module 42 fixes the lead in the vertical direction, and the positioning groove 43 adsorbs and fixes the lead in the horizontal direction, thereby effectively maintaining the stability of the lead when it is flattened.

[0030] In addition, the width of the upper flat roll 61 and the lower flat roll 62 is the same as the distance between the two 22, and the portion where the lead end extends to between the two limiting inner modules 42 is the portion to be flattened.

[0031] like Figure 3 In the figure, b represents the laser emission port. The flattening control component includes a laser receiver 71 and an adjustable dual laser exciter 72, which are respectively located at the left and right upper ends of the base 7. The adjustable dual laser exciter 72 is provided with upper and lower laser emission ports, and the distance between the two laser emission ports is adjustable. The vertical distance between the laser beams emitted by the two laser emission ports is the thickness of the lead after flattening, so that the flattening amount is adjustable, thereby making this solution adaptable to the needs of different flattening amounts, and can achieve precise control of the flattening amount of various types of leads. In addition, the adjustable dual laser exciter 72 is equipped with a switch and a wire position adjustment knob, wherein the wire position adjustment knob is used to adjust the vertical distance between the dual lasers. The specific adjustment principle is the existing technology and will not be elaborated on here.

[0032] like Figure 4 A laser signal lamp 31 is installed on the upper end of the laser receiver 71, and the laser receiver 71 is located in front of the digital display chassis 1. The laser signal lamp 31 is used to feedback whether the laser receiver 71 receives the positioning and distance adjustment laser, so that the flattening amount of the balanced hydraulic rolling 5 can be accurately controlled to further accurately control the flattening amount of the lead wire and the surface force is evenly applied, and the thickness of the flat head is consistent after flattening.

[0033] like Figure 5-6 By setting the dual laser vertical distance of the adjustable dual laser exciter 72, the flattening amount of the balanced hydraulic roller 5 can be accurately controlled, thereby effectively reducing the flattening amount of the lead, improving the uniformity of the surface force, and making the thickness of the flat head consistent after flattening, effectively avoiding the defective rate problem caused by uneven lead flattening thickness, and greatly increasing the reliability of the package lead test. Compared with the existing technology, the lead flattening precision control device of this scheme has a simple principle, high accuracy, and wide adaptability, and can achieve precise control of the flattening amount of various types of leads.

[0034] Example 2:

[0035] See also Figure 2 The inner diameter of the wire hole 44 is consistent with the lead diameter, and the inner diameter of the mouth of the wire hole 44 is not less than 2-5 times the inner diameter of the wire hole 44. The mouth of the wire hole 44 is fixedly inlaid with a deflection ring 8. Through the setting of the deflection ring 8, the consistency of the upper and lower forces on the part to be flattened during flattening can be monitored, effectively avoiding the situation where the upper and lower forces are not synchronized, resulting in the lead part moving outward, causing the final flattened part to be larger or offset, thereby effectively ensuring the accuracy of flattening and improving the yield rate.

[0036] Two deflection detection signal lights 32 are also installed on the laser receiver 71. The deflection detection ring 8 is connected to the deflection detection signal lights 32. The deflection detection signal lights 32 are used to indicate whether the part to be flattened is subjected to force synchronously, so that the staff can timely understand and control the uniform force on the lead wire during flattening.

[0037] See also Figure 7A cavity 81 is excavated inside the deflection measuring ring 8, and an open contact 11 is fixedly connected to the upper and lower inner walls of the cavity 81. The end of the open contact 11 facing the lead is a soft structure with elastic sealing, and the other end of the open contact 11 is a hard structure. The soft and hard dividing line of the open contact 11 is located at the center line of the mouth of the open contact 11, and the open contact 11 is filled with liquid medium. The left and right inner walls of the cavity 81 are respectively fixedly connected to the supporting plate 10. Along the counterclockwise direction, the two open contacts 11 are respectively connected to the adjacent supporting plates 10 with a contact bent rod 9. The contact bent rod 9 includes an outer sleeve 91 fixedly connected between the open contact 11 and the supporting plate 10 and an inner support tube 92 located inside the outer sleeve 91. The end of the inner support tube 92 is fixedly connected to the contact head 93, and the diameter of the contact head 93 is consistent with the inner diameter of the outer sleeve 91, so that the outer sleeve 91 can effectively limit the stability of the contact head 93 in the outer sleeve 91. The ends of the two contact heads 93 away from the inner support tube 92 are both connected There are two self-resetting signal switches, which respectively control the opening and closing of two deflection detection signal lights 32. When the upper flat roller 61 first applies downward force to the lead, the lower open contact 11 is stressed, causing the self-resetting signal switch on the corresponding contact head 93 to be squeezed and triggered. At this time, only one of the deflection detection signal lights 32 is illuminated. Similarly, when the lower flat roller 62 first applies upward force to the lead, only the other deflection detection signal light 32 is illuminated. When the interval between the upper and lower forces on the lead is small or the forces are synchronized, neither deflection detection signal light 32 will be illuminated, indicating that the flattening process is more accurate and stable. Based on the illuminated deflection detection signal light 32, it can be determined whether the lead was first subjected to force from the bottom or the top.

[0038] In addition, it is worth noting that after the lead is subjected to force successively from top to bottom, the lead is finally squeezed and stressed synchronously from top to bottom. At this time, the lead tends to the middle, and the upper and lower open contacts 11 are not subjected to force, that is, the deflection detection signal light 32 will automatically go out at this time; and when the lit deflection detection signal light 32 cannot be extinguished, it means that the flattening position of the lead by the upper plane rolling 61 and the lower plane rolling 62 is offset upward or downward, and the flattening deviation of the lead is relatively large at this time.

[0039] See also Figure 8 The inner support tube 92 located above the carrier plate 10 is fixedly connected to the adjacent open contact 11, and the inner support tube 92 and the opening of the open contact 11 are communicated with each other. The inner support tube 92 is an elastic sealing structure. When the lead is first subjected to force below, the end of the lead to be flattened deviates upward, causing the upper open contact 11 to be subjected to force first. At this time, the liquid medium therein is squeezed into the contact bending rod 9, causing the inner support tube 92 to extend, driving the contact head 93 to move toward the carrier plate 10 and squeeze the contact, so that the deflection signal light 32 is lit.

[0040] like Figure 9The inner support tube 92 located below the supporting plate 10 is fixedly connected to the adjacent supporting plate 10. The inner support tube 92 is a hard structure. The mouth of the corresponding open contact 11 is fixedly connected with a force protrusion 12. The force protrusion 12 is located on the inner side of the outer sleeve 91. When the upper part of the lead is subjected to force first, the end of the lead to be flattened is offset downward, and the lower open contact 11 is subjected to force. At this time, the liquid medium pushes the force protrusion 12 to deform and move toward the contact head 93, so that the signal switch on the contact head 93 is turned on, and then the corresponding deflection signal light 32 is lit.

[0041] This embodiment adds the above-mentioned structure on the basis of embodiment 1, and the rest of the parts are consistent with embodiment 1. On the basis of embodiment 1, the following technical effects can also be achieved: in conjunction with the setting of the deflection measuring ring 8, it can effectively monitor whether the upper flat roller 61 and the lower flat roller 62 simultaneously generate upper and lower extrusion pressure on the lead, thereby effectively avoiding the situation in which the lead moves outside the lead hole due to the asynchronous upper and lower forces during flattening, causing the flat head size to increase, thereby further improving the accuracy during flattening and improving the yield rate.

[0042] In addition, it is worth noting that in order to ensure the accuracy of the asynchronous monitoring of the upper and lower forces on the lead, the self-resetting signal switch on the control contact head 93 is in contact with the relative carrier plate 10 or the force protrusion 12, so that when the force is applied on one side, the self-resetting signal switch can be triggered immediately. Figure 8 and Figure 9 The middle part shows the mobility when a force is applied on one side. The contact head 93 is not in contact with the carrier plate 10 or the force protrusion 12. It is only for the convenience of viewing.

[0043] Example 3:

[0044] In this embodiment, only one deflection detection signal light 32 is provided, so that when the lead is flattened, when the upper and lower forces are not synchronously applied, the light will be on to remind you, but it will not be on when the forces are applied synchronously. Compared with the provision of two deflection detection signal lights 32 in Example 1, it cannot indicate which side is subjected to force first when the upper and lower forces are not synchronously applied.

[0045] During specific implementation, those skilled in the art may select an appropriate implementation method as needed.

[0046] The above is only the best implementation method adopted by this application in combination with current actual needs, but the scope of protection of this application is not limited to this.

Claims

1. A lead wire uniform flattening control device, comprising a pedestal (7), wherein the upper left end of the pedestal (7) is fixedly connected to a digital display chassis (1), a numerical control panel (2) is installed on the digital display chassis (1), a limit assembly (4) is connected to the middle of the upper end of the pedestal (7), an upper flat roller (61) and a lower flat roller (62) are respectively provided on the upper and lower sides of the limit assembly (4), and a balancing hydraulic roller (5) is also installed on the upper end of the upper flat roller (61), characterized in that: The upper flat roller (61) and the lower flat roller (62) are driven by electric cylinders. A flattening control assembly is provided at the upper end of the pedestal (7). The flattening control assembly includes a laser receiver (71) and an adjustable dual laser exciter (72) respectively located at the left and right upper ends of the pedestal (7). A laser signal lamp (31) is installed at the upper end of the laser receiver (71), and the laser receiver (71) is located in front of the digital display chassis (1). The limit assembly (4) includes two opposite magnetic positioning slides (41), and the magnetic positioning slides (41) are connected with a The inner limit module (42) has positioning grooves (43) on both the left and right inner walls thereof, and the inner limit module (42) is slidably connected to the magnetic positioning slide plate (41) through the positioning grooves (43). The inner limit module (42) has two wire holes (44) located on the same horizontal line, and a lead wire is inserted into the wire hole (44). The end of the lead wire extends between the two inner limit modules (42), and the ends of the upper flat rolling (61) and the lower flat rolling (62) are both oriented toward the position between the two (22).

2. A lead wire uniform flattening control device according to claim 1, characterized in that: The adjustable dual laser exciter (72) is provided with two upper and lower laser emission ports, and the distance between the two laser emission ports is adjustable. The vertical distance between the laser beams emitted by the two laser emission ports is the thickness of the lead after flattening.

3. A lead wire uniform flattening control device according to claim 1, characterized in that: The inner limiting module (42) fixes the lead in the vertical direction, and the positioning slide groove (43) adsorbs and fixes the lead in the horizontal direction.

4. A lead wire uniform flattening control device according to claim 1, characterized in that: The inner diameter of the wire hole (44) is consistent with the lead wire diameter, and the inner diameter of the mouth of the wire hole (44) is not less than 2-5 times the inner diameter of the wire hole (44). The mouth of the wire hole (44) is fixedly inlaid with a deflection ring (8).

5. A lead wire uniform flattening control device according to claim 4, characterized in that: Two deflection detection signal lights (32) are also installed on the laser receiver (71), and the deflection detection ring (8) is connected to the deflection detection signal lights (32) by signal.

6. A lead wire uniform flattening control device according to claim 5, characterized in that: A cavity (81) is bored inside the deflection measuring ring (8), and the upper and lower inner walls of the cavity (81) are fixedly connected with open contacts (11), and the left and right inner walls of the cavity (81) are respectively fixedly connected with a supporting plate (10), and along the counterclockwise direction, a contact bending rod (9) is connected between the two open contacts (11) and the adjacent supporting plates (10).

7. A lead wire uniform flattening control device according to claim 6, characterized in that: The contact bending rod (9) includes an outer sleeve (91) fixedly connected between the open contact (11) and the supporting plate (10) and an inner support tube (92) located inside the outer sleeve (91), the end of the inner support tube (92) is fixedly connected to a contact head (93), and the diameter of the contact head (93) is consistent with the inner diameter of the outer sleeve (91), and the ends of the two contact heads (93) away from the inner support tube (92) are connected to self-resetting signal switches, and the two self-resetting signal switches respectively control the opening and closing of two deflection detection signal lights (32).

8. A lead wire uniform flattening control device according to claim 7, characterized in that: The inner support tube (92) located above the supporting plate (10) is fixedly connected to the adjacent opening contact (11), and the inner support tube (92) and the opening of the opening contact (11) are communicated with each other. The inner support tube (92) is an elastic sealing structure.

9. A lead wire uniform flattening control device according to claim 8, characterized in that: The inner support tube (92) located below the supporting plate (10) is fixedly connected to the adjacent supporting plate (10). The inner support tube (92) is a hard structure. The mouth of the corresponding open contact (11) is fixedly connected with a force protrusion (12). The force protrusion (12) is located on the inner side of the outer sleeve (91).

10. A lead wire uniform flattening control device according to claim 9, characterized in that: One end of the open contact (11) facing the lead is a soft structure with elastic sealing, the other end of the open contact (11) is a hard structure, and the soft-hard boundary line of the open contact (11) is located at the center line of the opening of the open contact (11), and the open contact (11) is filled with a liquid medium.

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