A ejector pin mechanism for chip demolding

Abstract

This utility model relates to the field of chip demolding tooling technology, specifically to an ejector mechanism for chip demolding. The ejector mechanism includes an ejector mounting base, an ejector assembly, a sliding sleeve assembly, and a magnet. The top of the ejector mounting base has an insertion hole, and the ejector assembly is vertically inserted into the insertion hole. The ejector mounting base contains a magnet, which is magnetically connected to the ejector assembly. The sliding sleeve assembly is vertically slidably fitted onto the ejector mounting base, and the two form a vacuum cavity. The top of the sliding sleeve assembly has a vacuum hole and an ejector hole. The vacuum cavity communicates with the vacuum hole. The ejector hole and the ejector assembly are vertically slidably connected. The ejector assembly remains stationary, while the sliding sleeve assembly slides. During demolding, the chip and ejector are essentially in a relatively static state. The blue film, under negative pressure, moves downward with the sliding sleeve assembly, achieving separation of the blue film from the chip. This effectively avoids chip displacement and damage caused by inconsistent speeds between the ejector and the chip during demolding.

Description

Technical Field

[0001] This utility model relates to the field of chip demolding tooling technology, specifically to an ejector pin mechanism for chip demolding. Background Technology

[0002] Currently, most chip AOI inspection and testing equipment on the market uses ejector pin mechanisms for chip demolding. Multiple chips are attached to a blue film, and the ejector pin mechanism is needed to separate the chips from the blue film. The ejector pin is located inside the ejector pin cap in its original position, and extends out of the cap during demolding. In actual operation, negative pressure is applied, causing the vacuum hole on the ejector pin cap to attract the blue film; the ejector pin is then raised and lowered, extending from the ejector pin hole in the ejector pin cap, puncturing the blue film, and then contacting the bottom of the chip until it is lifted and detached from the blue film.

[0003] However, directly lifting the chip with ejector pins can lead to discrepancies in the rising speed between the pins and the chip, making the chip more susceptible to misalignment and damage, which can affect subsequent defect detection processes. Furthermore, ejector pins are typically secured with set screws, making replacement time-consuming and impacting production efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an ejector pin mechanism for chip demolding, which solves the technical problems of chip displacement and damage caused by ejector pin movement and chip lifting during demolding, as well as the cumbersome assembly and disassembly of ejector pins.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the ejector mechanism for chip demolding of this utility model includes an ejector mounting base, an ejector assembly, a sliding sleeve assembly, and a magnet.

[0008] The top of the ejector pin mounting base has an insertion hole, and the ejector pin assembly is vertically inserted into the insertion hole; the ejector pin mounting base has a built-in magnet so that the magnet is magnetically connected to the ejector pin assembly;

[0009] The sliding sleeve assembly is slidably sleeved on the ejector pin mounting base along the vertical direction, and the two together form a vacuum cavity;

[0010] The top of the sliding sleeve assembly has a vacuum hole and a pin hole; the vacuum cavity is connected to the vacuum hole; the pin hole is slidably connected to the pin assembly along the vertical direction.

[0011] Optionally, the ejector pin assembly includes an ejector pin locking cap, an ejector pin seat, and an ejector pin;

[0012] The bottom end of the ejector pin seat is inserted into the insertion hole along the vertical direction, and the top end is inserted into the bottom end of the ejector pin.

[0013] The pin locking cap is installed on the top of the pin seat and can lock or unlock the pin;

[0014] In the in-situ state, the top surface of the ejector pin is not higher than the top surface of the ejector pin hole; in the demolding state, the ejector pin and the ejector pin hole are slidably connected along the vertical direction.

[0015] Optionally, the sliding sleeve assembly includes a pin cap seat, a pin cap, a pin cap locking sleeve, and a lifting assembly;

[0016] The ejector cap seat is slidably sleeved on the ejector mounting seat along the vertical direction; the lifting assembly is connected to the ejector cap seat and can drive the ejector cap seat to move along the vertical direction;

[0017] The ejector cap is fixed to the top of the ejector cap seat by the ejector cap locking sleeve; the top of the ejector cap is provided with the vacuum hole and the ejector hole.

[0018] Optionally, the bottom end of the outer wall of the ejector cap is provided with an edge along the circumferential direction;

[0019] The top of the pin cap is provided with a slot; the edge engages with the slot.

[0020] The outer wall of the ejector cap seat is provided with an external thread at its top end; the ejector cap locking sleeve is threadedly connected to the external thread to press the edge against the ejector cap locking sleeve and the slot.

[0021] Optionally, the locking sleeve of the ejector pin cap is fitted onto the ejector pin cap.

[0022] Optionally, the lifting assembly includes a guide cap mounting base, a support plate, an eccentric actuator, and a bearing;

[0023] The guide cap mounting seat is sleeved on the ejector pin cap seat; the top end of the support plate is connected to the guide cap mounting seat, and the bottom end abuts against the bearing; the bearing is connected to the eccentric shaft of the eccentric driver.

[0024] Optionally, the lifting assembly further includes a connecting assembly, a guide rail, and a sliding plate;

[0025] The bottom end of the ejector pin mounting base is connected to the connecting assembly;

[0026] The guide rail is mounted on the connecting assembly; the slide plate is slidably connected to the guide rail along the vertical direction;

[0027] The top of the skateboard is connected to the guide cap mounting base, and the bottom is connected to the support plate.

[0028] Optionally, the lifting assembly further includes a spring and an adapter block;

[0029] The adapter block is mounted on the slide plate;

[0030] The spring is arranged along the vertical direction; one end of the spring is connected to the connecting assembly, and the other end is connected to the adapter block.

[0031] Optionally, the ejector mechanism further includes an air connector;

[0032] The guide cap mounting base has a first through hole; the ejector pin cap base has a second through hole;

[0033] The gas connector, the first through hole, the second through hole, the vacuum chamber, and the vacuum hole are connected in sequence.

[0034] Optionally, a set screw is provided radially on the ejector seat;

[0035] The set screw abuts against the bottom end of the set pin.

[0036] (III) Beneficial Effects

[0037] The beneficial effects of this utility model are:

[0038] The ejector pin assembly is vertically inserted into the socket, allowing for assembly and disassembly as a single unit. This eliminates the need to separately remove the ejector pins from the assembly for replacement, facilitating quick assembly and disassembly of the ejector pin assembly and mounting base. This improves the efficiency of ejector pin assembly replacement and enhances adaptability to demolding different chip models. Furthermore, the ejector pin mounting base features a built-in magnet that magnetically connects to the ejector pin assembly. This magnetic design further strengthens the connection between the mounting base and the ejector pin assembly, resulting in better stability of the ejector pin assembly during operation.

[0039] The sliding sleeve assembly is vertically slidably mounted on the ejector pin mounting base. This means that the sliding sleeve assembly can slide relative to the ejector pin assembly. Compared to the traditional method where the ejector pin moves vertically up and down, the ejector pin assembly is fixed while the sliding sleeve assembly slides. Therefore, during the demolding process, the chip and the ejector pin are basically in a relatively static state. The blue film is subjected to negative pressure and moves downward with the sliding sleeve assembly, realizing the separation of the blue film and the chip. This effectively avoids the chip shifting and being damaged due to the inconsistent speed of the ejector pin and the chip during demolding, thus improving the reliability of the ejector pin mechanism. Attached Figure Description

[0040] Figure 1 This is a front sectional view of the ejector pin mechanism for chip demolding according to the present invention;

[0041] Figure 2This is a perspective view of the chip demolding device according to the present invention from the front view.

[0042] Figure 3 This is a perspective view of the chip demolding device according to the present invention from the rear view.

[0043] Figure 4 This is a side view of the present invention for chip demolding;

[0044] Figure 5 for Figure 1 Enlarged view of point B in the middle;

[0045] Figure 6 This is a schematic diagram showing the connection between the ejector pin mounting base and the ejector pin assembly of this utility model;

[0046] Figure 7 for Figure 1 Enlarged view of point A in the middle.

[0047] [Explanation of Labels in the Attached Image]

[0048] 1: Ejector pin mounting base;

[0049] 2: Ejector pin assembly; 21: Ejector pin locking cap; 22: Ejector pin seat; 221: Ejector screw; 23: Ejector pin;

[0050] 3: Sliding sleeve assembly; 31: Vacuum chamber; 32: Vacuum hole; 33: Ejector pin hole; 34: Ejector pin cap seat; 35: Ejector pin cap; 351: Edge; 36: Ejector pin cap locking sleeve; 37: Lifting assembly; 371: Guide cap mounting base; 3711: First through hole; 3712: Second through hole; 372: Support plate; 373: Eccentric actuator; 374: Bearing; 375: Connecting block; 3751: Adapter plate; 3752: Mounting plate; 376: Guide rail; 377: Slide plate; 378: Elastic element; 379: Adapter block;

[0051] 4: Magnet;

[0052] 5: Air connector. Detailed Implementation

[0053] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0054] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0055] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] See Figures 1 to 5 This utility model provides an ejector mechanism for chip demolding. The ejector mechanism includes an ejector mounting base 1, an ejector assembly 2, a sliding sleeve assembly 3, and a magnet 4. The top of the ejector mounting base 1 has an insertion hole, and the ejector assembly 2 is vertically inserted into the insertion hole. The ejector mounting base 1 has a built-in magnet 4 so that the magnet 4 is magnetically connected to the ejector assembly 2. The sliding sleeve assembly 3 is slidably mounted on the ejector mounting base 1 vertically, and the two form a vacuum cavity 31. The top of the sliding sleeve assembly 3 has a vacuum hole 32 and an ejector hole 33. The vacuum cavity 31 communicates with the vacuum hole 32. The ejector hole 33 is slidably connected to the ejector assembly 2 vertically.

[0058] The vertical direction refers to the height and is also the axis of the socket. The vacuum chamber 31 is connected to an external negative pressure device, allowing the vacuum hole 32 to adsorb the blue film under negative pressure, thereby causing the blue film to move. The ejector pin 23 of the ejector pin assembly 2 extends from the ejector pin hole 33, pierces the blue film as it moves, and comes into contact with the bottom of the chip until the blue film is completely separated from the chip.

[0059] The ejector pin assembly 2 is vertically inserted into the socket, allowing for assembly and disassembly as a single unit. This eliminates the need to separately remove the ejector pin 23 from the assembly 2 for replacement, facilitating quick assembly and disassembly of the ejector pin assembly 2 and ejector pin mounting base 1. This improves the efficiency of ejector pin assembly 2 replacement and enhances adaptability for demolding different chip models. Furthermore, the magnet 4 built into the ejector pin mounting base 1 magnetically connects to the ejector pin assembly 2. This magnetic attraction further strengthens the connection between the ejector pin mounting base 1 and the ejector pin assembly 2, resulting in better stability of the ejector pin assembly 2 during operation. The magnet 4's attraction strength is carefully designed to ensure a sufficient connection strength between the ejector pin mounting base 1 and the ejector pin assembly 2 while allowing for easy manual separation.

[0060] The sliding sleeve assembly 3 is vertically slidably mounted on the ejector pin mounting base 1, meaning that the sliding sleeve assembly 3 can slide relative to the ejector pin assembly 2. Compared to the traditional method of ejector pins moving directly vertically, the ejector pin assembly 2 is fixed while the sliding sleeve assembly 3 slides. Therefore, during the demolding process, the chip and the ejector pin 23 are basically in a relatively static state. The blue film is subjected to negative pressure and moves downward with the sliding sleeve assembly 3, realizing the separation of the blue film and the chip. This effectively avoids the chip shifting and being damaged due to the inconsistent speed of the ejector pin and the chip during the demolding process, thus improving the reliability of the ejector pin mechanism.

[0061] like Figure 6 As shown, the ejector assembly 2 includes an ejector locking cap 21, an ejector seat 22, and an ejector pin 23. The bottom end of the ejector seat 22 is vertically inserted into the insertion hole, and the top end is inserted into the bottom end of the ejector pin 23. The ejector locking cap 21 is installed on the top end of the ejector seat 22, and the ejector pin 23 is located inside the ejector locking cap 21. The ejector locking cap 21 can lock or unlock the ejector pin 23. In the in-situ state, the top surface of the ejector pin 23 is not higher than the top surface of the ejector hole 33, ensuring that the ejector cap 35 and the blue film are fully adsorbed and ensuring the connection strength between the two. In the demolding state, the ejector pin 23 and the ejector hole 33 are vertically slidably connected to achieve the separation of the chip and the blue film, thus completing the demolding. In this embodiment, the inner side of the ejector pin locking cap 21 is provided with a conical structure, which cooperates with the conical structure of the ejector pin seat 22. The bottom end of the ejector pin locking cap 21 is threadedly connected to the ejector pin seat 22. During the tightening of the ejector pin locking cap 21, the pressure generated by the conical structure is used to hold the ejector pin 23 tightly. In actual production, the ejector pin assembly 2 can be disassembled and reassembled as a whole, and different models of ejector pin assemblies 2 (different models of ejector pin 23) can be replaced. Multiple models of ejector pin assemblies 2 can be used as spares to achieve the purpose of quickly changing the model of ejector pin 23. By setting the ejector pin locking cap 21, the ejector pin 23 and the ejector pin seat 22 are easy to disassemble and reassemble. After loosening the ejector pin locking cap 21, the ejector pin 23 can be pulled out from the top of the ejector pin seat 22, and different models of ejector pin 23 can be directly replaced on the ejector pin seat 22. The replacement of different models of ejector pin 23 in the ejector pin mechanism can also be completed quickly. Secondly, the magnet 4 is attached to the bottom of the inner wall of the socket, and the bottom end of the ejector pin seat 22 is magnetically attracted to the top end of the magnet 4. Of course, the magnet 4 can also be pre-embedded in the wall of the pin mounting base 1.

[0062] Furthermore, the sliding sleeve assembly 3 includes a pin cap seat 34, a pin cap 35, a pin cap locking sleeve 36, and a lifting assembly 37. The pin cap seat 34 is slidably mounted vertically on the pin mounting seat 1. The lifting assembly 37 is connected to the pin cap seat 34 and can drive the pin cap seat 34 to move vertically. The pin cap 35 is fixed to the top of the pin cap seat 34 by the pin cap locking sleeve 36, realizing a detachable connection between the pin cap 35 and the pin cap seat 34. The top of the pin cap 35 has a vacuum hole 32 and a pin hole 33. Specifically, the lifting assembly 37 can be an electric push rod, a cylinder, or a hydraulic cylinder. The lifting assembly 37 can drive the pin cap seat 34 to move vertically, thereby moving the pin cap 35 and realizing the relative movement between the pin cap 35 and the pin 23. Compared to the direct lifting and lowering drive method of the ejector pin, the ejector pin 23 of this utility model does not move and remains relatively stationary with the chip, ensuring the positional accuracy of the chip after demolding and facilitating accurate material handling in subsequent processes; it also reduces the collision force between the ejector pin and the chip, preventing the ejector pin 23 from bumping and damaging the chip, and improving the product yield after demolding.

[0063] See Figure 7 The outer bottom of the ejector cap 35 has a circumferential edge 351; the top of the ejector cap base 34 has a slot; the edge 351 engages with the slot; the top of the outer wall of the ejector cap base 34 has an external thread; the ejector cap locking sleeve 36 is threadedly connected to the external thread to press the edge 351 between the ejector cap locking sleeve 36 and the slot. Specifically, the edge 351 engages inside the slot, and the slot limits the edge 351 horizontally and downwardly. While the ejector cap locking sleeve 36 is threadedly connected to the ejector cap base 34, it can also abut against the top surface of the edge 351, thereby tightly pressing the edge 351 into the slot, achieving vertical limitation of the ejector cap 35, and ensuring the stability of the ejector cap 35 during vertical lifting and lowering.

[0064] In actual operation, first loosen the ejector cap locking sleeve 36 to disconnect the threaded connection between the ejector cap locking sleeve 36 and the ejector seat 22, then pull the ejector cap locking sleeve 36 upwards; pull the ejector cap 35 upwards to disengage it from the slot and expose the ejector pin 23; after loosening the ejector pin locking cap 21, directly replace the ejector pin 23, or replace the entire ejector pin assembly 2; reverse the above steps to complete the connection of each component of the ejector pin mechanism. Compared with the traditional method of disassembling and assembling the ejector pin by loosening the ejector screw, this significantly reduces the ejector pin replacement time and improves the demolding efficiency when operating on various types of chips.

[0065] Optionally, the ejector cap locking sleeve 36 is fitted onto the ejector cap 35, so that the ejector cap locking sleeve 36 can also limit the ejector cap 35 radially, further improving the overall connection strength of the sliding sleeve assembly 3, thereby improving the stability of the ejector cap 35 in vertical lifting and lowering, and ensuring the positional accuracy of the chip after demolding.

[0066] Additionally, the lifting assembly 37 includes a guide cap mounting base 371, a support plate 372, an eccentric actuator 373, and a bearing 374. The guide cap mounting base 371 is sleeved on the ejector pin cap seat 34. The top end of the support plate 372 is connected to the guide cap mounting base 371, and the bottom end abuts against the bearing 374 tangentially. The bearing 374 is connected to the eccentric shaft of the eccentric actuator 373. Specifically, the support plate 372 presses against the bearing 374 by the weight of its top components, ensuring that the support plate 372 will not detach from the bearing 374 during descent. In this embodiment, the guide cap mounting base 37 is constructed as an L-shaped plate and is connected to the ejector pin cap seat 34 by a clamping mechanism. The eccentric actuator 373 can drive the support plate 372 to move up and down repeatedly in the vertical direction. Compared with driving methods such as cylinders and electric push rods, since the size of the bearing 374 is fixed, the distance that the support plate 372 moves in the vertical direction is fixed. This makes the distance between the blue film and the corresponding chip fixed in the demolding state, which reduces the driving accuracy requirements of the lifting component 37 and reduces equipment costs.

[0067] Of course, the eccentric driver 373 can be replaced with a motor or electric motor, and the bearing 374 can be replaced with a cam, which can also ensure that the distance between the blue film and the corresponding chip is fixed in the demolded state.

[0068] Furthermore, the lifting assembly 37 also includes a connecting assembly, a guide rail 376, and a sliding plate 377; the bottom end of the ejector pin mounting seat 1 is connected to the connecting assembly; the guide rail 376 is disposed on the connecting assembly; the sliding plate 377 is vertically slidably connected to the guide rail 376; the top end of the sliding plate 377 is connected to the guide cap mounting seat 371, and the bottom end is connected to the support plate 372. In this embodiment, the connecting assembly includes a connecting block 375, an adapter plate 3751, and a mounting plate 3752; the mounting plate 375 is connected to the ejector pin mounting seat 1 by a clamping method, the bottom end of the mounting plate 375 is bolted to the mounting plate 3751, and the mounting plate 3751 is connected to the first end face of the mounting plate 3752; the guide rail 376 is disposed on the second end face of the mounting plate 3752; the eccentric driver 373 is mounted on the second end face. The guide rail 376 can guide and support the sliding plate 377, improving the stability of the sliding sleeve assembly 3 in vertical lifting.

[0069] Secondly, the lifting assembly 37 also includes an elastic element 378 and a connecting block 379; the connecting block 379 is disposed on the slide plate 377; the elastic element 378 is disposed vertically; one end of the elastic element 378 is connected to the connecting assembly, and the other end is connected to the connecting block 379. In this embodiment, the elastic element 378 is a spring, and corresponding pins are provided on the connecting block 379 and the connecting assembly, with both ends of the spring connected to the pins. The elastic element 378 effectively improves the connection strength between the bearing 374 and the support plate 372, ensuring that even when the eccentric driver 373 rotates at a high speed, the support plate 372 can still tightly adhere to the bearing 374, thus improving the stability of the ejector mechanism during the demolding process.

[0070] In addition, the ejector mechanism also includes an air connector 5; a first through hole 3711 is provided in the guide cap mounting base 371; a second through hole 3712 is provided in the ejector cap base 34; the air connector 5, the first through hole 3711, the second through hole 3712, the vacuum chamber 31, and the vacuum hole 32 are connected in sequence. Specifically, the air connector 5 is connected to an external negative pressure device, so that the vacuum hole 32 is in a negative pressure state, effectively adsorbing the blue film. Compared with the method of directly connecting the air connector 5 to the ejector cap 35, the ejector cap 35 is indirectly connected through the guide cap mounting base 371 and the ejector cap base 34, which effectively reduces the impact of the external air pipe of the air connector 5 on the positional accuracy of the ejector cap 35, and ensures the positional accuracy of the ejector pin 23 during demolding.

[0071] See you again Figure 6 The ejector seat 22 has an ejector screw 221 radially disposed thereon; the ejector screw 221 abuts against the bottom end of the ejector pin 23. Tightening the ejector screw 221 can adjust the fixed position of the ejector pin 23 on the ejector seat 22, ensuring the installation accuracy of the ejector pin 23. Optionally, both the ejector pin 23 and the ejector cap 35 are provided with ejector screw holes, and corresponding ejector screws 221 are provided on the corresponding connecting components. By adjusting the height of the ejector screw 221, the installation position of the ejector cap 35 or the ejector pin 23 can be adjusted to improve the positional accuracy of the chip after demolding.

[0072] It should be understood that the above description of the specific embodiments of this utility model is only for illustrating the technical route and features of this utility model, and its purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. However, this utility model is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of this utility model should be covered by the protection scope of this utility model.

Claims

1. An ejector mechanism for chip demolding, characterized in that, The ejector mechanism includes an ejector mounting base (1), an ejector assembly (2), a sliding sleeve assembly (3), and a magnet (4); The top of the ejector pin mounting base (1) is provided with an insertion hole, and the ejector pin assembly (2) is vertically inserted into the insertion hole; the ejector pin mounting base (1) contains the magnet (4) so ​​that the magnet (4) is magnetically connected to the ejector pin assembly (2); The sliding sleeve assembly (3) is slidably sleeved on the ejector pin mounting seat (1) along the vertical direction, and the two form a vacuum cavity (31); The top of the sliding sleeve assembly (3) is provided with a vacuum hole (32) and a pin hole (33); the vacuum chamber (31) is connected to the vacuum hole (32); the pin hole (33) is slidably connected to the pin assembly (2) along the vertical direction.

2. The ejector pin mechanism for chip demolding according to claim 1, characterized in that, The ejector assembly (2) includes an ejector locking cap (21), an ejector seat (22), and an ejector (23); The bottom end of the ejector pin seat (22) is inserted into the insertion hole along the vertical direction, and the top end is inserted into the bottom end of the ejector pin (23); The pin locking cap (21) is installed on the top of the pin seat (22) and can lock or unlock the pin (23); In the in-situ state, the top surface of the ejector pin (23) is not higher than the top surface of the ejector pin hole (33); in the demolding state, the ejector pin (23) and the ejector pin hole (33) are slidably connected along the vertical direction.

3. The ejector pin mechanism for chip demolding according to claim 2, characterized in that, The sliding sleeve assembly (3) includes a pin cap seat (34), a pin cap (35), a pin cap locking sleeve (36), and a lifting assembly (37); The ejector cap seat (34) is slidably sleeved on the ejector mounting seat (1) along the vertical direction; the lifting assembly (37) is connected to the ejector cap seat (34) and can drive the ejector cap seat (34) to move along the vertical direction; The ejector cap (35) is fixed to the top of the ejector cap seat (34) by the ejector cap locking sleeve (36); the top of the ejector cap (35) is provided with the vacuum hole (32) and the ejector hole (33).

4. The ejector pin mechanism for chip demolding according to claim 3, characterized in that, The bottom of the outer wall of the pin cap (35) is provided with an edge (351) along the circumferential direction; The top of the pin cap (34) is provided with a slot; the edge (351) engages with the slot; The top of the outer wall of the ejector cap seat (34) is provided with an external thread; the ejector cap locking sleeve (36) is threadedly connected to the external thread to press the edge (351) against the ejector cap locking sleeve (36) and the slot.

5. The ejector pin mechanism for chip demolding according to claim 4, characterized in that, The pin cap locking sleeve (36) is fitted onto the pin cap (35).

6. The ejector pin mechanism for chip demolding according to claim 3, characterized in that, The lifting assembly (37) includes a guide cap mounting base (371), a support plate (372), an eccentric actuator (373), and a bearing (374); The guide cap mounting base (371) is sleeved on the pin cap base (34); the top end of the support plate (372) is connected to the guide cap mounting base (371), and the bottom end abuts against the bearing (374); the bearing (374) is connected to the eccentric shaft of the eccentric driver (373).

7. The ejector pin mechanism for chip demolding according to claim 6, characterized in that, The lifting assembly (37) also includes a connecting assembly, a guide rail (376), and a sliding plate (377); The bottom end of the ejector pin mounting base (1) is connected to the connecting assembly; The guide rail (376) is disposed on the connecting assembly; the slide plate (377) is slidably connected to the guide rail (376) along the vertical direction; The top end of the slide plate (377) is connected to the guide cap mounting base (371), and the bottom end is connected to the support plate (372).

8. The ejector pin mechanism for chip demolding according to claim 7, characterized in that, The lifting assembly (37) also includes an elastic element (378) and a transition block (379); The adapter block (379) is disposed on the slide plate (377); The elastic element (378) is arranged along the vertical direction; one end of the elastic element (378) is connected to the connecting assembly, and the other end is connected to the adapter block (379).

9. The ejector pin mechanism for chip demolding according to claim 6, characterized in that, The ejector pin mechanism also includes an air connector (5); The guide cap mounting base (371) has a first through hole (3711); the ejector pin cap base (34) has a second through hole (3712); The gas connector (5), the first through hole (3711), the second through hole (3712), the vacuum chamber (31), and the vacuum hole (32) are connected in sequence.

10. The ejector pin mechanism for chip demolding according to claim 2, characterized in that, The ejector seat (22) is provided with an ejector screw (221) in the radial direction; The set screw (221) abuts against the bottom end of the set pin (23).

Images