Ejector pin fixing mechanism, ejector pin mechanism and die bonder comprising ejector pin mechanism

Abstract

The utility model provides an ejector pin fixing mechanism, an ejector pin mechanism and a die bonder comprising the ejector pin mechanism, and relates to the technical field of die bonder devices, the ejector pin fixing mechanism comprises an ejector pin seat, an ejector pin and a bolt, the ejector pin seat comprises a top surface and a bottom surface which are oppositely arranged, and a side wall connecting the top surface and the bottom surface; a plurality of ejector pin holes are formed in the top surface, ejector pins penetrate through the ejector pin holes, the ejector pins are installed and fixed in the ejector pin seat, a plurality of bolt holes are formed in the side wall, and the bolt holes oppositely formed in the side wall are in one-to-one correspondence in number and position; one ends of the bolts penetrate through the bolt holes to fix the ejector pins, and at least two bolts fix one ejector pin. The ejector pin fixing device provided by the utility model can realize quick assembly and disassembly of the ejector pin so as to solve the problem that the traditional ejector pin is difficult to disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of crystal bonding machine devices, and in particular to an ejector pin fixing mechanism, an ejector pin mechanism, and a crystal bonding machine including the ejector pin mechanism. Background Art

[0002] Die bonders play a crucial role in the semiconductor chip packaging process. However, traditional die bonders present significant issues with ejector pin fixation. Specifically, many traditional die bonders utilize a knob-type or cover-type structure to secure the ejector pins. This fixing method is quite cumbersome to operate. When an ejector pin becomes damaged or needs to be replaced, technicians must disassemble the entire fixing knob or cover to replace the damaged ejector pin. This process is not only time-consuming and labor-intensive, reducing production efficiency, but also may cause additional damage to the die bonder during disassembly. Furthermore, even after disassembly and replacement, some ejector pins may still not be effectively secured, posing a potential risk to the semiconductor chip packaging quality. Therefore, improving the ejector pin fixing method and enhancing the stability and reliability of the die bonder have become urgent technical challenges in the semiconductor packaging field. Utility Model Content

[0003] In view of the above-mentioned problems existing in the prior art die bonding machine, the present application provides an ejector pin structure of a die bonding machine.

[0004] On one hand, the utility model provides a thimble fixing mechanism, which is characterized by comprising:

[0005] An ejector seat, the ejector seat comprising a top surface and a bottom surface arranged opposite to each other, and a side wall connecting the top surface and the bottom surface; the top surface is provided with a plurality of ejector holes, through which ejectors pass, and the ejectors are installed and fixed in the ejector seat; the side wall is provided with a plurality of bolt holes, and the bolt holes on the two opposite side walls are arranged in a one-to-one correspondence;

[0006] A bolt, one end of which passes through the bolt hole and fixes the ejector pin, and at least two of the bolts fix one ejector pin.

[0007] Optionally, an adjustment hole is provided on the side wall of the ejector seat, and the adjustment hole is located below the plane where the bolt hole is located.

[0008] Optionally, a line connecting the geometric centers of the two oppositely arranged bolt holes passes through the axis of the ejector hole.

[0009] Optionally, the diameter of the ejector pin hole is between 0.67 mm and 0.7 mm, and the distance between adjacent ejector pin holes is between 4 mm and 7 mm.

[0010] Optionally, the bolt includes a top screw.

[0011] Optionally, the ejector seat is an octagonal arc box structure, and the side wall includes four rectangular side walls and an arc surface connecting adjacent rectangular side walls.

[0012] Optionally, a supporting structure is fixedly mounted on the bottom surface, and the supporting structure is provided with a positioning opening.

[0013] Another aspect of this embodiment provides an ejector mechanism, comprising:

[0014] An ejector pin fixing mechanism, wherein the ejector pin fixing mechanism is any one of the ejector pin fixing mechanisms described above;

[0015] A base, on which the ejector fixing mechanism is fixedly mounted via a supporting structure;

[0016] The thimble cap is buckled onto the thimble fixing structure, and the lower end of the thimble cap is connected to the upper end of the base.

[0017] Optionally, a plurality of through holes are provided on the top surface of the ejector cap, the number of the through holes is greater than or equal to the number of the ejector holes, at least a portion of the through holes are aligned one by one with the ejector holes in the axial direction of the ejector mechanism, and the ejector passes through the ejector holes and out of the through holes.

[0018] Another aspect of the present invention provides a die bonding machine, comprising the above-mentioned ejector pin mechanism.

[0019] As described above, the ejector fixing mechanism, ejector mechanism, and die bonding machine provided by the present invention have at least the following beneficial technical effects:

[0020] Quick maintenance and replacement: The design of the ejector pin holder with bolt holes and adjustment holes, combined with the use of bolts, enables quick fixing and removal of the ejector pin. The ejector pin can be replaced with simple tool operation, improving work efficiency.

[0021] Optimize space utilization: The ejector seat is designed as an octagonal arc box structure, which not only enhances the stability of the structure, significantly reduces the space occupied by the ejector mechanism, but also reduces friction loss.

[0022] Adapting to Diverse Needs: The ejector holder features multiple ejector holes arranged in an array, significantly increasing the density of the ejector pins while also enhancing the flexibility and adaptability of the pin-fixing mechanism. This design allows users to adjust the specific placement of the ejector pins within the holes to meet specific chip sizes and types. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1Shown is a structural schematic diagram of the ejector pin fixing mechanism provided in Example 1.

[0024] Figure 2 Display as Figure 2 Bottom view of the ejector pin holder shown.

[0025] Figure 3 Display as Figure 2 Top view of the ejector pin holder shown.

[0026] Figure 4 Display as Figure 2 Side view of the ejector pin holder shown.

[0027] Figure 5 Shown is a schematic structural diagram of the fastening screws used in this embodiment.

[0028] Figure 6 Shown is a structural schematic diagram of the ejector pin fixing mechanism of the second embodiment.

[0029] Figure 7 Display as Figure 6 Top view of the ejector mechanism shown.

[0030] Figure 8a A side view of a base provided in the second embodiment is shown.

[0031] Figure 8b Shown is a cross-sectional view of a base provided in the second embodiment.

[0032] Figure 9a Shown is a top view of the thimble cap provided in the second embodiment.

[0033] Figure 9b A side view of the thimble cap provided in the second embodiment is shown.

[0034] Figure 10a Shown is a top view of the ejector mechanism provided in the second embodiment.

[0035] Figure 10b Shown is a side view of the ejector mechanism provided in the second embodiment.

[0036] Reference numerals

[0037] 01. Ejector seat; 02. Base; 03. Ejector cap; 04. Support structure; 010. Top surface; 011. Ejector hole; 020. Bottom surface; 030. Side wall; 031. Bolt hole; 032. Rectangular side wall; 033. Arc side wall; 040. Ejector; 050. Bolt; 051. Ejector screw; 060. Adjustment hole; 021. Groove; 022. Positioning hole; 034. Through hole; 041. Positioning opening; 070 Threaded hole. DETAILED DESCRIPTION

[0038] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0039] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner. Although the illustrations only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation, the form, quantity, positional relationship and proportion of each component in actual implementation can be changed at will under the premise of realizing the technical solution of this party, and the component layout form may also be more complicated.

[0040] Example 1

[0041] This embodiment provides a pin fixing mechanism, such as Figure 1 As shown, it is a schematic structural diagram of the ejector pin fixing mechanism provided in this embodiment; Figure 1 As can be seen, ejector seat 01 has a box-like structure and includes two oppositely disposed top surfaces 010 and bottom surfaces 020, as well as four side walls 030 connecting top and bottom surfaces 010 and 020. Multiple ejector holes 011 are provided on top surface 010, and multiple bolt holes 031 are provided on side walls 030. Bolt holes 031 on two opposing side walls 030 are arranged in a one-to-one correspondence. One end of ejector pin 040 passes through ejector hole 011 and is installed and fixed within ejector seat 01. The other end of ejector pin 040 passes through ejector hole 011 and exits ejector seat 01. Bolts 050 pass through bolt holes 031 to secure ejector pin 050. At least two bolts 050 are required to secure each ejector pin 040.

[0042] In particular, at least a portion of the ejector holes 011 are distributed in an array on the top surface 010 of the ejector seat 01; the line connecting the geometric centers of the two oppositely arranged bolt holes 031 passes through the axis of the ejector hole 050, that is, the line connecting the bolt holes 031 on the side wall 030 and the bolt holes 031 forms an intersection, and the ejector hole 011 and this intersection are as follows: Figure 1In the Z-axis direction shown, there is a one-to-one correspondence with the axial direction of ejector base 01. In particular, sidewall 030 is provided with an adjustment hole 060, located below the plane where bolt hole 031 is located, for removing damaged ejector pins 040. When this ejector mechanism is in use, ejector pin 040 is installed in ejector base 01 from top surface 010 through ejector hole 011. Bolt 050 is passed through bolt hole 040 to secure ejector pin 040 in ejector base 010. If a single ejector pin 040 is damaged, the bolt 050 securing it is loosened, and the damaged ejector pin 040 can be removed through adjustment hole 060.

[0043] Generally, the shape of the ejector pin holder 01 can be designed according to the actual shape of the die bonder. Generally, the ejector pin holder 01 is a box-shaped structure. Generally, the shape of the ejector pin holder 01 is a cube, a rectangular parallelepiped, a cylinder, a polyhedron, or other box-shaped structures that can accommodate the ejector pins 040. For details, please continue to refer to Figure 1 In this embodiment, the ejector seat 01 is a rectangular box-shaped structure. Figure 2 As shown, it is shown as Figure 1 The bottom view structure of the ejector seat shown; that is, the structural diagram of the XY plane of the ejector seat 01, composed of Figure 2 It can be seen that the bottom surface 020 of the ejector seat 01 is an octagonal structure, consisting of four straight lines and four arcs. Figure 1 and Figure 2 As can be seen, in this embodiment, the ejector seat 01 is an octagonal arc box structure, and the side wall 030 includes four rectangular side walls 032 and four arc surface side walls 033. The provision of the arc surface side walls 033 helps to protect the ejector seat 01.

[0044] Generally, if Figure 1 As shown, support structure 04 is fixedly mounted on bottom surface 020 of ejector base 01. Generally, the shape of support structure 04 can be customized based on actual needs. Specifically, in this embodiment, support structure 04 is cylindrical. Specifically, support structure 04 is provided with a positioning opening 041 for connecting ejector base 01 to the base for positioning. Ejector base 01 is fixedly mounted on the base via support structure 04.

[0045] Generally, the size of ejector seat 01 can be set according to the size and number of ejector pins 040 actually required. Generally, the diameter of ejector pin 040 is between 0.60mm and 0.8mm; further, the diameter of ejector pin 040 is between 0.68mm and 0.7mm; the length of ejector pin 040 is between 12mm and 20mm, and further, the lengths of ejector pin 040 include: 12mm, 15mm, 17mm, 19mm, and 20mm. In this embodiment, the diameter of ejector pin 040 is 0.7mm and the length is 17mm. Generally, the number of ejector pins 040 is N, where N is a positive integer greater than or equal to 1. Further, the number of ejector pins 040 is 1, 2, 4, 16, etc. The diameter of ejector hole 011 is less than or equal to the diameter of ejector pin 040. Specifically, in this embodiment, the diameter of ejector hole 011 is between 0.67mm and 0.7mm. Furthermore, the diameter of the ejector hole 011 is 0.7 mm.

[0046] In particular, based on the design principle of the ejector base 01 provided in this embodiment, at least two bolts 050 are required to fix each ejector 040. Therefore, the ejectors 040 are arranged on the ejector base 01 and cannot be fully loaded.

[0047] Generally, the number of ejector holes 011 provided in the ejector seat 01 is greater than or equal to the number of ejector pins required. Specifically, Figure 3 As shown, it is shown as Figure 1 The top view of the ejector base is shown; that is, the schematic structural diagram of the ejector base 01 in the XY plane. In this embodiment, the number of ejector holes 011 is 24. Generally, the distance between the two most adjacent ejector holes 011 is between 2mm and 10mm, and further, between 4mm and 7mm. Specifically, as Figure 3As shown, along the X-axis direction, that is, the length direction of the ejector seat 01, the distance a between the two most adjacent ejector holes 011 is between 6mm and 7mm, and along the Y-axis direction, that is, the width direction of the ejector seat 01, the distance b between the two most adjacent ejector holes 011 is between 4mm and 5mm. Specifically, a is equal to 6.6±0.1mm, and b is equal to 4.7±0.1mm. Generally, along the X-axis direction, the distance a1 between the two farthest ejector holes 011 is between 2mm and 40mm, and along the Y-axis direction, the distance b1 between the two farthest ejector holes 011 is between 2mm and 20mm. Specifically, in this embodiment, along the X-axis direction, the distance a1 between the two farthest ejector holes 011 is 33mm±0.1mm, and along the Y-axis direction, the distance b1 between the two farthest ejector holes 011 is 14.1mm±0.1mm. Generally, the length L1 of ejector base 01 along the X-axis is between 3 mm and 50 mm, and the width L2 of ejector base 01 along the Y-axis is between 3 mm and 30 mm. Furthermore, the length L1 of ejector base 01 along the X-axis is between 10 mm and 40 mm, and the width L2 of ejector base 01 along the Y-axis is between 5 mm and 20 mm. Specifically, in this embodiment, the length L1 of ejector base 01 along the X-axis is 40 mm, and the width L2 of ejector base 01 along the Y-axis is 24 mm.

[0048] like Figure 4 As shown, it is shown as Figure 1 The side view of the ejector seat shown is as follows; generally, the height h of the ejector seat 01 along the Z-axis direction is smaller than the length of the ejector pin 040. Specifically, the height h of the ejector seat 01 along the Z-axis direction is between 10 mm and 18 mm. Specifically, in this embodiment, the length of the ejector pin 040 used is 17 mm, so the height of the ejector seat 01 along the Z-axis direction is 12.2 ± 0.1 mm. In particular, the ejector seat 01 also includes a support structure 04, which is fixedly mounted on the bottom surface 020 of the ejector seat 01, and the support structure 04 is used to fix the ejector seat 01 and the base of the die bonder. Generally, the length of the support structure 04 in the Z-axis direction is between 5 mm and 15 mm. Specifically, in this embodiment, the length of the support structure 04 in the Z-axis direction is 12.2 ± 0.5 mm. In this embodiment, the height of the ejector seat 01 and the support structure 01 in the Z-axis direction is 25.2 ± 0.5 mm.

[0049] Generally, the top surface of the ejector seat 01 can be a rectangle, circle or other polygonal structure. Figure 3The top surface 010 of the ejector seat 01 provided in this embodiment is an octagonal structure, including four straight lines and an arc line connecting the straight lines. The length of the straight line and the radius r of the circle forming the arc line can be set according to the actual size of the ejector seat 01. Generally, the length of the straight line is less than or equal to the length L1 and width L2 of the ejector seat 01. Specifically, the length of the straight line along the X-axis direction is 36.9±0.5mm, and the length along the Y-axis direction is 18.3±0.5mm. Generally, the radius r of the circle forming the arc shape is between 30mm and 80mm. Specifically, in this embodiment, the radius of the circle forming the arc shape is 44mm.

[0050] Please continue reading Figure 1 , the bolt holes 031 are evenly arranged along the side wall 030. Specifically, the number of bolt holes 031 is set according to the number of ejector holes 011. Specifically, the lines connecting the bolt holes 031 on the relatively arranged side walls 030 form an intersection, and this intersection is consistent with the position of the ejector hole 011 in the Z-axis direction. So that when the ejector 040 is inserted into the interior of the ejector seat 01 from the ejector hole 011, the bolt 050 can be screwed into the corresponding bolt hole 031 to fix the ejector 040. In particular, at least two bolts 050 are required to fix the ejector 040. Specifically, in this embodiment, 24 ejector holes 011 are provided and 20 screw holes 031 are provided. Specifically, as Figure 1 As shown, four screw holes are respectively provided on the two side walls of the YZ plane, and six screw holes are respectively provided on the two side walls of the XZ plane.

[0051] Generally, the bolt 050 includes: a top screw 051, a hexagon socket screw, a torx head screw, a set screw, and other screws that can be used to fix the ejector pin 040 through the bolt hole 031. Specifically, Figure 6 The figure shows a schematic diagram of the structure of the fastening screw used in this embodiment; in this embodiment, the bolt 050 used is a top screw 051. Specifically, the size of the bolt hole 031 matches the top screw 051. Generally, the diameter specifications of the top screw 051 are M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M16, M18, M20, etc.; common top screw lengths include 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm, 18mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 60mm, etc. Specifically, in this embodiment, the diameter specification of the top screw 051 used is M2.5, and the diameter of the bolt hole 031 is 2.5mm.

[0052] Generally, the adjustment hole 060 is provided on the side wall 030 and is located below the bolt hole 031. The damaged ejector pin 040 can be removed from the adjustment hole 060 by using tools such as tweezers, pliers, chucks, clamps, magnets, hooks, suction cups, and wrenches. Generally, four adjustment holes 060 can be provided, one on each side wall 030. Specifically, Figure 1 As shown, in this embodiment, two adjustment holes 060 are provided, and the adjustment holes 060 are provided on the two side walls 030 in the YZ plane. Generally, the size of the adjustment hole 060 can be adjusted according to the actual size of the side wall 030. Generally, the adjustment hole 060 is rectangular or circular. Specifically, in this embodiment, the adjustment hole 060 is a rectangular structure. Specifically, the length of the adjustment hole 060 is less than or equal to the length of the side wall 030 where it is located, and the width of the adjustment hole 060 is less than the width of the side wall 030 where it is located. In this embodiment, the length of the adjustment hole 060 along the Y axis is between 10 mm and 20 mm, and the width of the adjustment hole 060 along the Z axis is between 5 mm and 10 mm. Furthermore, along the Y axis direction, the length of the adjustment hole 060 is 16±0.5 mm, and along the X axis direction, the width of the adjustment hole 060 is 4±0.5 mm.

[0053] The ejector pin securing mechanism in this embodiment significantly increases the density of ejector pins by providing a plurality of ejector pin holes 011 arranged in an array on its ejector pin holder 01. This also enhances the flexibility and adaptability of the ejector pin securing mechanism. This design allows users to adjust the specific distribution of ejector pins 040 within ejector pin holes 011 based on actual needs, thereby accommodating the needs of securing chips of different sizes and types.

[0054] Furthermore, this embodiment incorporates bolts 050 as a means of securing ejector pins 040. This design not only greatly facilitates the maintenance and replacement of ejector pins 040, but also ensures the stability and reliability of ejector pins 040 during use. If an individual ejector pin 040 becomes damaged, the operator can simply loosen bolts 050 corresponding to the damaged ejector pin 040, remove it, and replace it with a new one. This not only improves equipment maintenance efficiency but also extends the overall service life of the ejector pin securing mechanism, providing users with a more economical and efficient experience.

[0055] Example 2

[0056] This embodiment provides a ejector mechanism. Figure 6 As shown, it is a schematic diagram of the ejector mechanism provided in this embodiment; Figure 6It can be seen that the ejector mechanism provided in this embodiment includes an ejector fixing mechanism, a base 02, and an ejector cap 03. The ejector fixing structure includes an ejector seat 01 and a support structure 04. The ejector seat 01 is fixedly mounted on the base 02 via the support structure 04, and the lower end of the ejector cap 03 is detachably connected to the upper end of the base 02. Optionally, the ejector fixing mechanism includes the ejector fixing structure provided in Example 1. Generally, the size and shape of the base 01 and the ejector cap 03 can be designed according to actual needs. Figure 6 As shown, the base 02 is a disc-shaped structure, the ejector seat 01 is an octagonal arc box structure, and the ejector cap 03 is a cylindrical structure. The structure of the ejector seat 01 can effectively prevent friction between the ejector seat 01 and the ejector cap 03.

[0057] like Figure 7 , which shows a top view of the base provided in this embodiment; Figure 8a A side view of a base provided for this embodiment is shown; Figure 8b The cross-sectional view of the base provided in this embodiment is shown. Specifically, the base 02 is further provided with a groove 021 that matches the support structure 04 to achieve a detachable connection between the ejector seat 01 and the base 02. Specifically, the base 02 is also provided with positioning holes 022 and threaded holes 070 around it to ensure that the ejector seat 01 is installed on the base 02 without being offset due to uneven force, and to prevent the ejector seat 01 from rotating relative to the base 02. Generally, as Figure 1 As shown, the size of positioning hole 022 matches the size of positioning opening 041. Support structure 04 aligns positioning opening 041 with positioning hole 022, thus mounting ejector pin 01 on base 02. Generally, one or more positioning holes 022 or threaded holes 070 may be provided. Specifically, in this embodiment, one positioning hole 022 and two threaded holes 070 are provided.

[0058] like Figure 9a , which shows a top view of the ejector cap provided in this embodiment; Figure 9b A side view of the ejector cap provided in this embodiment is shown; as can be seen from the figure, a plurality of through holes 034 are provided on the top surface of the ejector cap 03, the number of through holes 034 being greater than or equal to the ejector hole 011, and at least a portion of the through holes 034 being aligned one-to-one with the ejector hole 011 in the axial direction of the ejector mechanism in the Z-axis direction, so that the ejector pin 040 can pass through the ejector hole 011 and out of the through hole 034.

[0059] Generally, the diameter of through hole 034 is greater than or equal to the diameter of ejector hole 011. Specifically, in this embodiment, the diameter of through hole 034 is greater than that of ejector hole 011, and the diameter of through hole 034 is 0.8 mm. Generally, the distance between the two most adjacent through holes 034 is equal to the distance between the two most adjacent ejector holes 011. Specifically, in this embodiment, along the X-axis, the distance a' between the two most adjacent through holes 034 is 6.6 ± 0.1 mm. Along the Y-axis, i.e., the width direction of ejector base 01, the distance b' between the two most adjacent through holes 034 is 4.7 ± 0.1 mm.

[0060] Generally, the thimble cap 03 and the base 02 can be connected in a detachable manner by means of plug-in connection, threaded connection, etc. Specifically, in this embodiment, the thimble cap 03 is detachably mounted on the base 02 by means of plug-in connection and threaded fixing. Specifically, threaded holes 070 are provided in the axial direction of the base 02 and the thimble cap 03. When the thimble cap 03 is plugged into the base 02, screws are used to fix the base 02 and the thimble cap 03 in connection to prevent the thimble cap 03 from rotating relative to the base 02. Generally, one or more threaded holes 070 can be provided. Specifically, in this embodiment, two threaded holes 070 are provided along the axial direction of the thimble mechanism.

[0061] like Figure 10a As shown, it shows a top view of the ejector mechanism provided in this embodiment; Figure 10b The figure shows a side view of the ejector mechanism provided in this embodiment. Specifically, based on the design principle of ejector base 01 provided in this embodiment, at least two bolts 050 are required to secure each ejector 040. Therefore, ejector pins 040 are arranged on the top of ejector base 01 and cannot be fully loaded. Specifically, in this embodiment, eight ejector pins 040 are provided. As can be seen from the figure, the overall height H of the ejector mechanism is 45 mm.

[0062] Example 3

[0063] This embodiment provides a die bonding machine, including the ejector mechanism provided in the second embodiment.

[0064] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A thimble fixing mechanism, characterized in that: include: An ejector seat, the ejector seat comprising a top surface and a bottom surface arranged opposite to each other, and a side wall connecting the top surface and the bottom surface; the top surface is provided with a plurality of ejector holes, through which ejectors pass, and the ejectors are installed and fixed in the ejector seat; the side wall is provided with a plurality of bolt holes, and the bolt holes on the two opposite side walls are arranged in a one-to-one correspondence; A bolt, one end of which passes through the bolt hole and fixes the ejector pin, and at least two of the bolts fix one ejector pin.

2. The ejector pin fixing mechanism according to claim 1, characterized in that: An adjustment hole is provided on the side wall of the ejector seat, and the adjustment hole is located below the plane where the bolt hole is located.

3. The ejector pin fixing mechanism according to claim 2, characterized in that: The line connecting the geometric centers of the two oppositely arranged bolt holes passes through the axis of the ejector hole.

4. The ejector pin fixing mechanism according to claim 1, characterized in that: The diameter of the ejector pin holes is between 0.67 mm and 0.7 mm, and the distance between adjacent ejector pin holes is between 4 mm and 7 mm.

5. The ejector pin fixing mechanism according to claim 1, characterized in that: The bolt includes a jackscrew.

6. The ejector pin fixing mechanism according to claim 1, characterized in that: The ejector seat is an octagonal arc box structure, and the side wall includes four rectangular side walls and an arc surface connecting adjacent rectangular side walls.

7. The ejector pin fixing mechanism according to claim 1, characterized in that: A supporting structure is fixedly mounted on the bottom surface, and a positioning opening is provided on the supporting structure.

8. A ejector mechanism, characterized in that: include: An ejector pin fixing mechanism, wherein the ejector pin fixing mechanism is any one of claims 1 to 7; A base, on which the ejector fixing mechanism is fixedly mounted via a supporting structure; The thimble cap is buckled onto the thimble fixing structure, and the lower end of the thimble cap is connected to the upper end of the base.

9. The ejector mechanism according to claim 8, characterized in that: A plurality of through holes are provided on the top surface of the ejector cap, the number of the through holes being greater than or equal to the number of the ejector holes, at least a portion of the through holes being aligned one-to-one with the ejector holes in the axial direction of the ejector mechanism, and the ejector passes through the ejector holes and out of the through holes.

10. A die bonding machine, characterized in that: Including the ejector mechanism according to claim 8 or 9.

Images