Ejector pin assembly

Abstract

The utility model discloses an ejector pin assembly which comprises an ejector pin rod of which one end is inserted with an ejector pin locking nozzle, and is characterized in that one end of the ejector pin rod is provided with a locking nozzle mounting groove for limiting the rotation of the ejector pin locking nozzle; one end of the ejector pin rod is further sleeved with a locking nut in a threaded mode, and an ejector pin receding hole is formed in the end, away from the ejector pin rod, of the locking nut in a penetrating mode; when the locking nut is tightened at one end of the ejector pin rod, the locking nut can abut against the ejector pin locking nozzle, and the ejector pin locking nozzle is pressed in the locking nozzle mounting groove. The ejector pin locking nozzle is limited in the locking nozzle mounting groove, and when the locking nut is screwed to abut against the ejector pin locking nozzle, the ejector pin locking nozzle cannot rotate due to friction with the nut.

Description

Technical Field

[0001] The utility model relates to the field of mechanical manufacturing, in particular to an ejector pin assembly. Background Art

[0002] In chip manufacturing, the function of the ejector assembly is to lift the chip from the blue film that supports it for subsequent processing. The ejector assembly includes an ejector rod and an ejector lock nozzle that cooperates with it. In the prior art, the ejector lock nozzle is prone to rotate when fixed, which affects the accuracy of the ejector fixation, and further affects the position accuracy of the ejector when it is lifted. Therefore, designing an ejector assembly that prevents the ejector lock nozzle from rotating is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0003] The purpose of the utility model is to provide a ejector pin assembly to solve the above problems.

[0004] To achieve this purpose, the utility model adopts the following technical solution: an ejector assembly, comprising an ejector rod with an ejector lock nozzle inserted at one end, characterized in that a lock nozzle installation groove for limiting the rotation of the ejector lock nozzle is provided on an end surface of one end of the ejector rod;

[0005] One end of the ejector rod is also threadedly sleeved with a locking nut, and an ejector avoidance hole is formed through the locking nut at one end away from the ejector rod; when the locking nut is tightened on one end of the ejector rod, the locking nut can abut against the ejector lock mouth and press the ejector lock mouth into the lock mouth installation groove.

[0006] Preferably, at least one limiting plane is provided at one end of the ejector lock nozzle inserted into the lock nozzle installation groove, and a limiting slot wall for abutting against the limiting plane is provided at a position corresponding to the limiting plane in the lock nozzle installation groove.

[0007] Preferably, a hole wall of the ejector avoidance hole is provided with an abutment portion extending inwardly and used for abutting against an end of the ejector locking mouth away from the ejector rod;

[0008] When the locking nut is tightened onto one end of the ejector rod, the abutment portion presses the ejector locking nozzle into the locking nozzle installation groove.

[0009] Preferably, the outer periphery of the end of the ejector locking nozzle away from the ejector rod is provided with a chamfered surface; the abutment portion is provided with an abutment inclined surface matching the shape of the chamfered surface at a position corresponding to the chamfered surface;

[0010] When the locking nut is tightened onto one end of the ejector rod, the abutting inclined surface fits against the chamfered surface.

[0011] Preferably, it further comprises a mounting seat, wherein the mounting seat is provided with a through hole for passing the ejector rod;

[0012] Both ends of the mounting seat are respectively provided with mounting seat avoidance holes connected with the through hole, and both ends of the ejector rod can extend from the mounting seat avoidance holes respectively; an ejector rod limiting portion for preventing the ejector rod from swinging is arranged in the mounting seat avoidance hole, and the ejector rod limiting portion is slidably connected with the ejector rod;

[0013] A first flange is protruded around the outer periphery of one end of the mounting seat away from the locking nut, and a plurality of screw holes for fixing the mounting seat are spaced apart on the first flange.

[0014] Preferably, a plurality of grooves are formed on an end surface of the ejector locking mouth away from the ejector rod, and one end of the groove is communicated with the mounting hole.

[0015] Preferably, every two adjacent screw holes form a group of screw holes, and at least one limiting protrusion is provided on the upper surface of the first flange between at least one group of the screw holes;

[0016] The outer periphery of the mounting seat is rotatably sleeved with a rotation adjustment seat; a second flange is provided at the bottom end of the rotation adjustment seat, and the second flange is slidably connected to the first flange; a plurality of avoidance grooves are provided at the position of the second flange corresponding to the screw hole; an arc groove is provided at the position of the second flange corresponding to the limit protrusion;

[0017] It also includes an ejector cap, which is threadedly connected to one end of the rotation adjustment seat away from the second flange; the ejector cap is provided with an arc avoidance groove for avoiding the ejector at a position corresponding to the ejector.

[0018] Preferably, an air extraction hole is provided on the mounting seat, and the air extraction hole is connected to the through hole;

[0019] The ejector cap is also provided with a plurality of ventilation holes, and the ventilation holes, the through hole and the air extraction hole constitute an air flow channel of the ejector assembly.

[0020] Preferably, the ventilation holes are evenly distributed.

[0021] Preferably, the outer periphery of the locking nut is provided with anti-slip grooves.

[0022] Compared with the prior art, the utility model has the following beneficial effects: the ejector lock mouth is limited by the lock mouth installation groove, and when the locking nut is tightened to abut against the ejector lock mouth, the ejector lock mouth will not rotate due to friction with the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0025] Figure 1 A schematic diagram of the ejector rod structure provided in an embodiment of the utility model.

[0026] Figure 2 A schematic diagram of the structure of an ejector pin assembly provided in an embodiment of the utility model.

[0027] Figure 3 A cross-sectional view of the ejector pin assembly structure provided in an embodiment of the utility model.

[0028] Figure 4 This is a schematic diagram of the enlarged structure of part A of the ejector pin assembly provided in an embodiment of the utility model.

[0029] Figure 5 This is a schematic diagram of the enlarged structure of the ejector pin assembly B provided in an embodiment of the utility model.

[0030] Figure 6 A top view of the ejector pin assembly provided in an embodiment of the utility model.

[0031] Figure 7 A top view of the ejector cap provided in an embodiment of the utility model.

[0032] Illustrations: 1. Ejector rod; 11. Locking mouth mounting groove; 12. Ejector locking mouth; 121. Limiting plane; 122. Mounting hole; 13. Locking nut; 131. Abutment portion; 2. Mounting seat; 21. First flange; 22. Screw hole; 23. Through hole; 24. Limiting protrusion; 25. Sealing element; 26. Exhaust hole; 3. Rotary adjustment seat; 31. Second flange; 32. Avoidance groove; 33. Arc groove; 4. Ejector cap; 41. Avoidance arc groove; 41. Vent hole; 9. Ejector. DETAILED DESCRIPTION

[0033] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0035] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0036] The embodiment of the utility model provides an ejector assembly, comprising an ejector rod 1 with an ejector lock 12 inserted at one end, characterized in that a lock installation groove 11 for limiting the rotation of the ejector lock 12 is provided on an end surface of one end of the ejector rod 1;

[0037] One end of the ejector rod 1 is also threadedly sleeved with a locking nut 13, and an ejector avoidance hole is provided through the locking nut 13 at the end away from the ejector rod 1; when the locking nut 13 is tightened on one end of the ejector rod 1, the locking nut 13 can abut against the ejector lock mouth 12, pressing the ejector lock mouth 12 into the lock mouth installation groove 11.

[0038] Preferably, at least one limiting plane 121 is provided at one end of the ejector lock mouth 12 inserted into the lock mouth installation groove 11 , and a limiting groove wall for abutting against the limiting plane 121 is provided at a position corresponding to the limiting plane 121 in the lock mouth installation groove 11 .

[0039] The cross-section of the lower end of the ejector lock mouth 2 can be an octagon, a square, a semicircle, etc., and a lock mouth mounting groove 11 of a corresponding shape is set corresponding to the shape of the ejector lock mouth 2. In one embodiment provided in the present application, the cross-section of the lower end of the ejector lock mouth 2 is an octagon, and the lock mouth mounting groove 11 is a square. The limiting plane 121 at the lower end of the ejector lock mouth 2 is tightly fitted with the inner wall of the lock mouth mounting groove 11 to limit the ejector lock mouth 2.

[0040] Preferably, the hole wall of the ejector avoidance hole is provided with an abutment portion 131 extending inwardly and used for abutting against an end of the ejector locking mouth 12 away from the ejector rod 1;

[0041] When the locking nut 13 is tightened on one end of the ejector rod 1 , the abutting portion 131 presses the ejector locking mouth 12 into the locking mouth installation groove 11 .

[0042] Preferably, a chamfered surface 123 is provided on the outer periphery of one end of the ejector lock nozzle 12 away from the ejector rod 1; and an abutting inclined surface matching the shape of the chamfered surface 123 is provided at the position of the abutting portion 131 corresponding to the chamfered surface 123;

[0043] When the locking nut 13 is tightened on one end of the ejector rod 1 , the abutting inclined surface fits against the chamfered surface 123 .

[0044] When the locking nut 13 is tightened on one end of the ejector rod 1 , the abutting inclined surface abuts against the chamfered surface 123 , thereby pressing the ejector locking mouth 12 into the locking mouth installation groove 11 .

[0045] When the locking nut 13 is installed, the locking flange 131 gradually squeezes the chamfered surface 123 , so that the ejector locking mouth 12 produces a slight elastic deformation, thereby locking the ejector 9 .

[0046] Preferably, it further comprises a mounting seat 2, wherein a through hole 23 for passing the ejector rod 1 is provided in the mounting seat 2;

[0047] Both ends of the mounting seat 2 are respectively provided with mounting seat avoidance holes connected with the through hole 23, and both ends of the ejector rod 1 can extend from the mounting seat avoidance holes respectively; an ejector rod limiting portion 25 for preventing the ejector rod 1 from swinging is arranged in the mounting seat avoidance hole, and the ejector rod limiting portion 25 is slidably connected with the ejector rod 1;

[0048] A first flange 21 is protruded around the outer periphery of one end of the mounting base 2 away from the locking nut 13 , and a plurality of screw holes 22 for fixing the mounting base 2 are spaced apart on the first flange 21 .

[0049] Since the ejector rod 1 is long in overall length and easily deflected during movement, thus affecting the position accuracy, a mounting seat 2 is provided to guide the movement direction of the ejector rod 1 through a through hole 23 in the mounting seat 2 to reduce the deflection of the ejector rod 1 during movement.

[0050] Preferably, a plurality of grooves are formed on the end surface of the ejector lock 12 away from the ejector rod 1, and one end of the groove is connected to the mounting hole 122. On this basis, each mounting hole 122 is connected to the side wall of the ejector lock 12, and a long opening along the direction of the ejector rod 1 is formed on the side wall of the ejector lock 12.

[0051] Preferably, every two adjacent screw holes 22 form a group of screw holes, and at least one limiting protrusion 24 is provided on the upper surface of the first flange 21 between at least one group of screw holes 22;

[0052] The outer periphery of the mounting seat 2 is rotatably sleeved with a rotation adjustment seat 3; a second flange 31 is provided at the bottom end of the rotation adjustment seat 3, and the second flange 31 is slidably connected to the first flange 21; a plurality of avoidance grooves 32 are provided at positions of the second flange 31 corresponding to the screw holes 22; an arc groove 33 is provided at positions of the second flange 31 corresponding to the limiting protrusion 24;

[0053] It also includes an ejector cap 4, which is threadedly connected to one end of the rotary adjustment seat 3 away from the second flange 31; the ejector cap 4 is provided with an arc avoidance groove 41 for avoiding the ejector 9 at a position corresponding to the ejector.

[0054] During chip processing, the chip is generally placed on a blue film, and the blue film is pierced from bottom to top by a pin to lift the chip. If the position of the blue film moves, the position of the chip will easily move, ultimately affecting the assembly accuracy.

[0055] The ejector cap is used to contact the blue film first when the ejector pierces the blue film upward, so that the blue film exerts a certain pressure on the blue film to make the blue film slightly in a tensioned state, thereby stabilizing the position of the blue film, and then making the ejector pierce the blue film more smoothly and avoiding pulling the blue film.

[0056] The ejector cap in the prior art has a large round hole at the ejector position to accommodate all the ejector pins, which increases the gap between the round hole and the ejector pins. The tension of the blue film is relatively small here, and the blue film is still easily pulled when the ejector pin is lifted.

[0057] In the present application, the clearance is reduced by separately opening an arc avoidance groove 41 at the position of each ejector pin 9 in the ejector cap 4. Since the ejector cap 4 is threadedly connected to the rotating mounting seat, and the thread has a tolerance, the ejector cap is often not always aligned with the ejector pin 9 at the same position after installation, resulting in interference between the inner wall of the arc avoidance groove 41 and the ejector pin 9. The groove is made into an arc shape to reduce the probability of interference. Furthermore, in order to prevent the ejector pin 9 from being directly opposite to the gap between the arc avoidance grooves 41 after the ejector cap 4 is installed, the present application further provides a rotating adjustment seat 3, and the angle of the rotating adjustment seat 3 is adjusted to avoid interference between the ejector pin 9 and the ejector cap 4.

[0058] Preferably, the mounting base 2 is provided with an air extraction hole 26, which is connected to the through hole 23;

[0059] The ejector cap 4 is also provided with a plurality of ventilation holes 42 , and the ventilation holes 42 , the through holes 23 and the air extraction holes 26 constitute an air flow path of the ejector assembly.

[0060] Preferably, the ventilation holes 42 are evenly distributed.

[0061] Preferably, the outer periphery of the locking nut 13 is provided with anti-slip grooves.

[0062] Compared with the prior art, the utility model has the following beneficial effects: the ejector lock mouth is limited by the lock mouth installation groove, and when the locking nut is tightened to abut against the ejector lock mouth, the ejector lock mouth will not rotate due to friction with the nut.

[0063] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An ejector assembly, comprising an ejector rod (1) having an ejector lock nozzle (12) inserted at one end, characterized in that: A lock mouth installation groove (11) for limiting the rotation of the ejector lock mouth (12) is provided on an end surface of one end of the ejector rod (1); One end of the ejector rod (1) is also threadedly sleeved with a locking nut (13), and an ejector avoidance hole is provided through the locking nut (13) at one end away from the ejector rod (1); when the locking nut (13) is tightened on one end of the ejector rod (1), the locking nut (13) can abut against the ejector locking mouth (12) and press the ejector locking mouth (12) into the locking mouth installation groove (11).

2. The ejector pin assembly according to claim 1, characterized in that: At least one limiting plane (121) is provided at one end of the ejector lock mouth (12) inserted into the lock mouth installation groove (11), and a limiting groove wall for abutting against the limiting plane (121) is provided at a position corresponding to the limiting plane (121) in the lock mouth installation groove (11).

3. The ejector pin assembly according to claim 2, characterized in that: The hole wall of the ejector avoidance hole is provided with an abutment portion (131) extending inwardly and used for abutting against an end of the ejector locking mouth (12) away from the ejector rod (1); When the locking nut (13) is tightened onto one end of the ejector rod (1), the abutment portion (131) presses the ejector locking mouth (12) into the locking mouth installation groove (11).

4. The ejector pin assembly according to claim 3, characterized in that: The outer periphery of the end of the ejector locking mouth (12) away from the ejector rod (1) is provided with a chamfered surface (123); the abutment portion (131) is provided with an abutment inclined surface matching the shape of the chamfered surface (123) at a position corresponding to the chamfered surface (123); When the locking nut (13) is tightened onto one end of the ejector rod (1), the abutting inclined surface fits against the chamfered surface (123).

5. The ejector pin assembly according to claim 1, characterized in that: It also comprises a mounting seat (2), wherein the mounting seat (2) is provided with a through hole (23) for passing the ejector rod (1); The two ends of the mounting seat (2) are respectively provided with mounting seat avoidance holes connected to the through hole (23), and the two ends of the ejector rod (1) can respectively extend from the mounting seat avoidance holes; an ejector rod limiting portion (25) for preventing the ejector rod (1) from swinging is arranged in the mounting seat avoidance hole, and the ejector rod limiting portion (25) is slidably connected to the ejector rod (1); A first flange (21) is protruded around the outer periphery of one end of the mounting seat (2) away from the locking nut (13), and a plurality of screw holes (22) for fixing the mounting seat (2) are provided at intervals on the first flange (21).

6. The ejector pin assembly according to claim 5, characterized in that: A plurality of grooves are formed on an end surface of the ejector locking mouth (12) away from the ejector rod (1), and one end of the groove is connected to the mounting hole (122).

7. The ejector pin assembly according to claim 6, characterized in that: Every two adjacent screw holes (22) form a group of screw holes, and the upper surface of the first flange (21) is provided with at least one limiting protrusion (24) between at least one group of the screw holes (22); The outer periphery of the mounting seat (2) is rotatably sleeved with a rotation adjustment seat (3); a second flange (31) is provided at the bottom end of the rotation adjustment seat (3), and the second flange (31) is slidably connected to the first flange (21); a plurality of avoidance grooves (32) are provided at positions of the second flange (31) corresponding to the screw holes (22); an arc groove (33) is provided at a position of the second flange (31) corresponding to the limiting protrusion (24); It also comprises an ejector cap (4), wherein the ejector cap (4) is threadedly connected to an end of the rotary adjustment seat (3) away from the second flange (31); the ejector cap (4) is provided with an avoidance arc groove (41) for avoiding the ejector (9) at a position corresponding to the ejector.

8. The ejector pin assembly according to claim 7, characterized in that: The mounting seat (2) is provided with an air extraction hole (26), and the air extraction hole (26) is connected to the through hole (23); The ejector cap (4) is also provided with a plurality of ventilation holes (42), and the ventilation holes (42), the through hole (23) and the air extraction hole (26) constitute an air flow channel of the ejector assembly.

9. The ejector pin assembly according to claim 8, characterized in that: The ventilation holes (42) are evenly distributed.

10. The ejector pin assembly according to claim 1, characterized in that: The outer periphery of the locking nut (13) is provided with anti-slip grooves.

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