Mechanism for placing nut in deep hole

Abstract

The utility model relates to the field of injection molds, and discloses a deep hole inner nut imbedding mechanism which comprises a male mold fixedly arranged on a movable mold base and a deep hole concavely formed in the male mold, and a transfer structure capable of receiving an inner nut at an opening of the deep hole and transferring the inner nut to a nut placement point at the bottom of the deep hole is arranged between the movable mold base and the male mold. According to the inner nut imbedding mechanism, the manipulator does not need to be inserted into the deep hole, only the inner nut needs to be placed on the transfer structure located at the opening of the deep hole, and the transfer structure can transfer the inner nut to the bottom of the deep hole, so that the inner nut is accurately placed on the nut placement point in the deep hole.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, and in particular to a deep hole nut insertion mechanism. Background Technology

[0002] Charging boxes are common injection-molded parts used in daily life and industry, formed by injection molding using injection molding machines and molds.

[0003] Chinese Patent Application No. 202322372464.2 discloses an injection mold for a food storage box body, including a lower injection mold (moving mold plate) and an upper injection mold (fixed mold plate). The moving mold plate is provided with an inner plate platform (moving mold base), and the moving mold base is provided with a forming protrusion (punch). The punch is provided with an ejector through hole, which passes through the punch and the moving mold base in sequence. The ejector through hole is equipped with an ejector rod to eject the plastic part (product) after the mold is opened. The fixed mold plate is provided with a cavity opposite to the punch.

[0004] After the mold is closed, the punch is inserted into the cavity, and the punch, cavity and ejector pin cooperate to form a molding chamber; after the mold is opened, the ejector pin moves close to the fixed platen to eject the product and make it separate from the punch, thus completing the product demolding.

[0005] After injection molding, the box (product) is usually fitted with an inner nut for fixing the box and installing parts inside the box. The injection molding of the box and the fitting of the inner nut are two separate processes, which is cumbersome. With the gradual development of technology, the existing technology uses a robot to place the inner nut at the nut placement point, so that after the mold is closed, the inner nut is located in the injection cavity. The inner nut is integrally injected into the box while the box is being formed.

[0006] However, some boxes have mounting posts protruding from the inner bottom wall of the box towards the opening, and an inner nut is injection molded onto the end face of the mounting post away from the bottom of the box. Therefore, a deep hole needs to be recessed in the punch to form the mounting post. The inner nut needs to be placed at the nut placement point at the bottom of the deep hole before injection molding. At this time, one open end of the inner nut faces the bottom of the deep hole and fits against the bottom of the deep hole, while the other end of the inner nut is closed. However, because the deep hole is narrow and deep, it is difficult for a conventional robot to insert into the deep hole and accurately place the nut at the aforementioned nut placement point. Utility Model Content

[0007] This invention addresses the shortcomings of conventional robotic arms in the prior art, which have difficulty in accurately placing nuts into deep holes at the nut placement points. It provides a deep hole nut insertion mechanism that facilitates the precise placement of inner nuts into deep holes at the nut placement points.

[0008] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0009] A deep hole nut insertion mechanism includes a punch fixedly mounted on a moving mold base and a deep hole recessed in the punch. A transfer structure is provided between the moving mold base and the punch at a nut placement point that can receive the inner nut at the opening of the deep hole and transfer the inner nut to the bottom of the deep hole.

[0010] Using the above solution, the robot arm does not need to be inserted into the deep hole. It only needs to place the inner nut on the transfer structure located at the opening of the deep hole. The transfer structure can then transfer the inner nut to the bottom of the deep hole, so that the inner nut is accurately placed at the nut placement point inside the deep hole.

[0011] Preferably, the transmission structure includes a movable rod that extends and retracts along the mold closing direction at the bottom of the deep hole. The movable rod needs to extend to the opening of the deep hole to receive the inner nut and, when it retracts to the bottom of the deep hole, drive the inner nut sleeved on it to move to the nut placement position. The movement of the movable rod is controlled by the drive structure.

[0012] Using the above scheme, the drive structure drives the moving rod to extend, so that the end of the moving rod near the opening of the deep hole is located at the opening of the deep hole. The robot or worker makes the opening of the inner nut face the moving rod and puts the inner nut on the end of the moving rod. The drive structure drives the moving rod to retract, so that the end of the moving rod near the opening of the deep hole is located at the bottom of the deep hole. The inner nut fitted on the end of the moving rod moves until its opening fits against the bottom of the deep hole. At this time, the inner nut is accurately placed at the nut placement point.

[0013] Preferably, the driving structure includes an ejector structure that is moved along the mold closing direction on the side of the moving mold base away from the punch. When the ejector structure approaches the moving mold base, it ejects the product for demolding, and when it moves away from the moving mold base, it resets. The movement of the ejector structure is controlled by the driving component. A switching structure is provided between the ejector structure and the moving rod. When the ejector structure moves closer to the moving mold base, the switching structure drives the moving rod to move synchronously. When the moving rod moves to the opening of the deep hole, the switching structure switches to allow the ejector structure to move independently to demold the product from the moving rod. When the ejector structure moves away from the moving mold base, the switching structure drives the moving rod to move away from the opening of the deep hole. When the moving rod moves to the bottom of the deep hole, the switching structure switches to lock the ejector structure and the moving rod.

[0014] Using the above scheme, the driving component drives the ejector structure to move closer to the moving mold base, and the ejector structure drives the product away from the punch, thus demolding the product from the punch. Simultaneously, the switching structure drives the moving rod to move synchronously to the opening of the deep hole. At this point, the driving component continues to drive the ejector structure closer to the moving mold base, and the switching structure releases the lock between the moving rod and the ejector structure, causing the moving rod to stop while the ejector structure continues to move closer to the moving mold base, driving the product away from the moving rod, thus demolding the product from the moving rod. Conversely, the driving component drives the ejector structure away from the moving mold base to reset, and the switching structure simultaneously drives the moving rod to retract to the bottom of the deep hole, locking the ejector structure and the moving rod together, ready for the next use. The switching structure eliminates the need for an additional driving component to drive the inner nut; only one driving force is required to simultaneously demold the product and drive the inner nut.

[0015] Preferably, the ejection structure includes a first ejector plate disposed on the side of the moving mold base away from the punch, and an ejector rod that protrudes vertically from the first ejector plate toward the moving mold base and penetrates the moving mold base and the punch.

[0016] Using the above scheme, the first ejector plate moves closer to the moving mold base, driving the ejector rod to extend out of the punch at one end away from the first ejector plate, thus ejecting the product from the punch and achieving demolding; conversely, the first ejector plate moves away from the moving mold base, driving the ejector rod to retract and reset at one end away from the first ejector plate, thus forming a molding chamber in conjunction with the punch and cavity.

[0017] Preferably, the switching structure includes a second ejector plate disposed on the side of the first ejector plate away from the moving mold base and on the end of the moving rod away from the deep hole opening, an elastic clamp fixedly disposed on the side wall of the first ejector plate with its opening facing the second ejector plate, and a clamping block fixedly disposed on the side wall of the second ejector plate that can be elastically inserted into the elastic clamp or disengaged from the elastic clamp. A limiting structure is provided between the moving mold base and the second ejector plate to restrict the moving rod from continuing to move when it moves to the deep hole opening or the bottom of the deep hole.

[0018] Using the above scheme, the first ejector plate moves closer to the moving mold base. At this time, the clamping block and the elastic clamping are elastically engaged, thereby driving the second ejector plate to move closer to the moving mold base synchronously until the moving rod moves to the opening of the deep hole. Under the action of the limiting structure, the second ejector plate can no longer move, while the driving force on the first ejector plate still exists, thereby driving the clamping block to disengage from the elastic clamping, and the first ejector plate and the second ejector plate unlock and disengage. Conversely, when the first ejector plate moves away from the moving mold base, the elastic clamp moves independently until it touches the clamping block. The elastic clamp then pushes the clamping block to move synchronously, causing the second ejector plate and the first ejector plate to move away from the moving mold base together until the moving rod reaches the bottom of the deep hole. Under the action of the limiting structure, the second ejector plate can no longer move, while the driving force on the first ejector plate remains, causing the clamping block to be elastically squeezed and locked into the elastic clamp, thus achieving the contact and locking of the second and first ejector plates. Similarly, when the driving component drives the first ejector plate to move away from the moving mold base, the clamping block can also be elastically squeezed and locked into the elastic clamp when it moves to touch the clamping block, achieving the contact and locking of the second and first ejector plates. Then, under the push of the driving force, they move synchronously away from the moving mold base until the moving rod reaches the bottom of the deep hole.

[0019] Preferably, the limiting structure includes a first limiting rod that protrudes vertically from the second ejector plate toward the moving mold base and abuts against the moving mold base when the moving rod moves to the opening of the deep hole; a moving mold plate that is fixedly connected to the moving mold base and located on the side of the second ejector plate away from the moving mold base; and a third limiting rod that protrudes vertically from the moving mold plate toward the moving mold base and abuts against the second ejector plate when the moving rod moves to the bottom of the deep hole.

[0020] Using the above scheme, the moving mold base is fixedly mounted on the moving mold plate, and there is an installation space between the moving mold plate and the moving mold base. The first ejector plate is located between the moving mold plate and the moving mold base, and the second ejector plate is located between the moving mold plate and the first ejector plate. The second ejector plate is provided with a first limiting rod, and the fixed mold plate is provided with a third limiting rod. When the moving rod moves to the opening of the deep hole, the first limiting rod abuts against the moving mold base to restrict the second ejector plate from continuing to approach the moving mold base. When the moving rod moves to the bottom of the deep hole, the third limiting rod abuts against the second ejector plate to restrict the second ejector plate from continuing to move away from the moving mold base.

[0021] Preferably, a second limiting rod is provided on the first ejector plate perpendicularly to the moving mold base. When the first limiting rod abuts against the moving mold base, the distance between the second limiting rod and the moving mold base is greater than the depth of the inner nut.

[0022] By adopting the above scheme, it is ensured that when the moving rod is stationary and the first ejector plate moves close to the moving mold base until the second limit rod abuts against the moving mold base, the product can be completely detached from the moving rod by the ejector rod.

[0023] Preferably, the elastic clamp includes a "U"-shaped clamp body with an opening facing the clamping block, and an arc-shaped groove recessed on the inner sidewall opposite to the clamp body, which fits against the outer ring wall of the clamping block when the clamp body clamps the clamping block.

[0024] By adopting the above scheme, the combination of the "U"-shaped clamp and the arc-shaped groove increases the difficulty of separation between the clamping block and the elastic clamp, preventing accidental separation from the elastic clamp before the moving rod moves to the opening of the deep hole.

[0025] This invention, employing the above technical solution, achieves significant technical advantages: When the first ejector plate moves closer to the moving mold base, the elastic clamp and clamping block, through elastic clamping, first drive the second ejector plate to move synchronously, causing the product to be demolded from the punch while simultaneously driving the moving rod to the opening of the deep hole. Under the limitation of the first limiting rod, the moving rod stops while the first ejector plate continues to move, the elastic clamp and clamping block disengage, and the product is demolded from the moving rod. After demolding, the inner nut is sleeved on the moving rod. When the first ejector plate moves away from the moving mold base, the elastic clamp and clamping block, through elastic clamping, drive the second ejector plate to move synchronously, causing the moving rod to move to the bottom of the deep hole and the ejector rod to reset and cooperate with the punch and cavity to form a molding chamber. At this time, the inner nut is placed at the nut placement point, and the elastic clamp and clamping block re-elastically clamp. The robot arm does not need to be inserted into the deep hole; it only needs to sleeve the inner nut on the moving rod, and with the demolding and reset movement of the ejection structure, the inner nut can be accurately placed at the nut placement point in the deep hole. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a deep hole nut insertion mechanism in one embodiment;

[0027] Figure 2 yes Figure 1 Enlarged view of point A in the image;

[0028] Figure 3 This is a partial enlarged view of the elastic clamp and clamping block disengaging in a deep hole nut insertion mechanism according to the embodiment.

[0029] Figure 4 This is a schematic diagram of the fixed mold assembly and the product in a deep hole nut insertion mechanism according to an embodiment;

[0030] Figure 5 yes Figure 4 Enlarged view of point B in the image;

[0031] Figure 6 This is a top view of the moving mold assembly and the transmission structure when the inner nut is located at the nut placement point in a deep hole inner nut insertion mechanism according to the embodiment;

[0032] Figure 7 yes Figure 6 Sectional view at point C;

[0033] Figure 8 yes Figure 7 Enlarged view of point D in the image;

[0034] Figure 9 This is a partial enlarged view of a deep hole inner nut insertion mechanism in an embodiment, where the inner nut is located at the opening of the deep hole and the elastic clamp and clamping block have not disengaged.

[0035] Figure 10 This is a partial enlarged view of a deep hole inner nut insertion mechanism in one embodiment, where the inner nut is located at the opening of the deep hole and the elastic clamp and clamping block are disengaged.

[0036] The parts referred to by the numbers in the above attached figures are as follows: 1. Moving mold plate; 2. Moving mold base; 3. Punch; 4. Fixed mold plate; 5. Fixed mold base; 6. Cavity; 7. Deep hole; 8. Moving rod; 9. Inner nut; 10. First ejector plate; 11. Ejector rod; 12. Second ejector plate; 13. Elastic clamp; 1301. Clamp body; 1302. Arc groove; 14. Clamping block; 15. First limit rod; 16. Third limit rod; 17. Second limit rod; 18. Product; 19. Mounting post. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example

[0038] A deep hole nut insertion mechanism, as described in the following figure Figures 1 to 10 The system includes a moving mold assembly and a fixed mold assembly. The fixed mold assembly includes a fixed mold plate 4, a fixed mold base 5 fixedly mounted on the fixed mold plate 4, and a recessed cavity 6 in the fixed mold base 5. The moving mold assembly includes a moving mold plate 1, a moving mold base 2 fixedly mounted on the moving mold plate 1, and a punch 3 protruding from the moving mold base 2. Ejection through holes are provided in the moving mold base 2 and the punch 3 along the mold closing direction, and ejector rods 11 are adapted to fit in the ejection through holes. A first ejector plate 10 is reciprocating between the moving mold plate 1 and the moving mold base 2 along the mold closing direction, and the end of the ejector rod 11 near the moving mold plate 1 is fixedly connected to the first ejector plate 10. When the first ejector plate 10 moves closer to the moving mold base 2, the ejector rod 11 passes through the punch 3, ejecting the product 18 from the punch 3 to achieve demolding. Conversely, when the first ejector plate 10 moves away from the moving mold base 2 back to its initial position, the ejector rod 11 retracts and resets, cooperating with the punch 3 and the cavity 6 to form the molding chamber of the molded product 18. The movement of the first ejector plate 10 is controlled by a driving component, which can be a hydraulic cylinder that drives the first ejector plate 10 to move; or it can be a pull rod connected at both ends to the fixed mold base 5 and the first ejector plate 10, driving the first ejector plate 10 to move by opening and closing the mold. The above structure, as well as the driving component and driving method that drive the moving mold assembly to close or open the mold, are all prior art. This embodiment does not improve the above structure and method, so they will not be described in detail here.

[0039] The punch 3 has a deep hole 7 recessed on the side away from the moving mold base 2, forming a mounting post 19. A second ejector plate 12 is provided between the moving mold base 1 and the first ejector plate 10. A moving rod 8 is fixedly provided on the second ejector plate 12 along the mold closing direction. The moving rod 8 is coaxially arranged with the deep hole 7, and the end of the moving rod 8 away from the second ejector plate 12 passes through the moving mold base 2 and the punch 3 and is located in the deep hole 7. The moving mold base 2 and the punch 3 are provided with clearance grooves that are adapted to the moving rod 8 and allow the moving rod 8 to move.

[0040] A third limiting rod 16 is protruding on the side of the moving mold plate 1 that is close to the moving mold base 2 and faces the moving mold base 2. When the second ejector plate 12 moves away from the moving mold base 2 and comes into contact with the third limiting rod 16, it can no longer move away from the moving mold base 2. At this time, the end of the moving rod 8 that is away from the second ejector plate 12 is located at the bottom of the deep hole 7, and the inner nut 9 fitted on this end is located at the nut placement point.

[0041] The second ejector plate 12 has a first limiting rod 15 protruding from the side of the moving mold base 2 facing the moving mold base 2. When the second ejector plate 12 moves close to the moving mold base 2 until the first limiting rod 15 abuts against the moving mold base 2, it can no longer move closer to the moving mold base 2. At this time, the end of the moving rod 8 away from the second ejector plate 12 is located at the opening of the deep hole 7, which facilitates the fitting of the inner nut 9. The inner ring wall of the inner nut 9 is provided with an internal thread, which is not shown in the figure.

[0042] The inner nut 9 also needs to be embedded on the end face of the box opening. However, since the shell wall of the box is generally thin, the nut placement point is close to the punch 3, and the gap between the two is small. This makes it difficult for a conventional robot to place the inner nut 9 there. Therefore, a moving rod 8 is provided at the nut placement point where the inner nut 9 needs to be embedded to facilitate the precise placement of the inner nut 9.

[0043] An elastic clamp 13 is fixedly installed on the side wall of the first ejector plate 10, and a clamping block 14 is fixedly installed on the side wall of the second ejector plate 12 opposite to the elastic clamp 13. Under a preset pressure, the clamping block 14 can be elastically inserted into the clamping plate 13 and elastically clamped by the elastic clamp 13; conversely, under a preset tension, the clamping block 14 can be dislodged from the elastic clamp 13. The clamping block 14 is cylindrical, and the elastic clamp 13 includes a "U"-shaped clamping body 1301 with its opening facing the clamping block 14. The inner side walls of the clamping body 1301 are symmetrically recessed with arc-shaped grooves 1302. When the clamping block 14 is elastically squeezed into the clamping body 1301, the arc-shaped grooves 1302 fit snugly against the outer ring wall of the clamping block 14. Guide surfaces are also provided at both ends of the opening of the clamping body 1301 to facilitate the squeezing insertion of the clamping block 14 into the clamping body 1301. When the clamping block 14 is elastically clamped by the elastic clamp 13 and fits into the arc groove 1302, the first ejector plate 10 abuts against the second ejector plate 12.

[0044] A second limiting rod 17 protrudes from the side of the first ejector plate 10 closest to the moving mold base 2. When the first limiting rod 15 abuts against the moving mold base 2, the distance between the second limiting rod 17 and the moving mold base 2 is greater than the depth of the inner nut 9. When the second limiting rod 17 abuts against the moving mold base 2, the first ejector plate 10 stops moving closer to the moving mold base 2. Conversely, when the third limiting rod 16 abuts against the second ejector plate 12 and the second ejector plate 12 abuts against the first ejector plate 10, the first ejector plate 10 stops moving away from the moving mold base 2.

[0045] The system also includes a control module. This module can be pre-set to indicate the maximum travel distance of the first ejector plate 10, or equipped with a sensor electrically connected to the control module. This ensures that the first ejector plate 10 stops moving when it reaches the point where the second limit rod 17 abuts against the moving mold base 2, and when the second ejector plate 12 abuts against the third limit rod 16 and the first ejector plate 10 abuts against the second ejector plate 12. The sensors, control module, and the connections, sensing, and control methods between the control module and the various components are all existing technologies and will not be elaborated upon here.

[0046] During demolding, the first ejector plate 10 moves close to the moving mold base 2. Through the elastic clamp 13 and the clamping block 14, the second ejector plate 12 moves synchronously, so that the product 18 is demolded from the punch 3 and the moving rod 8 is driven to move to the opening of the deep hole 7. Under the limit of the first limit rod 15, the moving rod 8 stops and the first ejector plate 10 continues to move. The elastic clamp 13 and the clamping block 14 disengage, and the product 18 is demolded from the moving rod 8.

[0047] After product 18 is demolded, the inner nut 9 is fitted onto the moving rod 8 located at the opening of the deep hole 7. The first ejector plate 10 moves away from the moving mold base 2 independently until the elastic clamp 13 abuts against the clamping block 14. At this time, if the clamping block 14 first elastically inserts into the elastic clamp 13 and clamps it, causing the first ejector plate 10 to abut against the second ejector plate 12, the first ejector plate 10 and the second ejector plate 12 move away from the moving mold base 2 simultaneously until the second ejector plate 12 abuts against the third limit rod 16, and the first ejector plate 10 stops moving. If the clamping block 14 does not elastically insert into the elastic clamp 13, the first ejector plate 10 and the second ejector plate 12 move away from the moving mold base 2 simultaneously until the second ejector plate 12 abuts against the third limit rod 16, and the first ejector plate 10 continues to move until the clamping block 14 elastically inserts into the elastic clamp 13, causing the first ejector plate 10 to abut against the second ejector plate 12, and the first ejector plate 10 stops moving. At this time, the ejector rod 11 is reset, and the moving rod 8 moves to the bottom of the deep hole 7, and the inner nut 9 fitted on it moves to the nut placement position.

[0048] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A deep hole nut insertion mechanism, comprising a punch (3) fixedly mounted on a moving mold base (2) and a deep hole (7) recessed in the punch (3), characterized in that: A transfer structure is provided between the moving mold base (2) and the punch (3) at the nut placement point, which can receive the inner nut (9) at the opening of the deep hole (7) and transfer the inner nut (9) to the bottom of the deep hole (7).

2. The deep hole internal nut placement mechanism according to claim 1, characterized in that: The transmission structure includes a movable rod (8) that extends and retracts at the bottom of the deep hole (7) along the mold closing direction. The movable rod (8) needs to extend to the opening of the deep hole (7) to receive the inner nut (9) and when it retracts to the bottom of the deep hole (7), it drives the inner nut (9) sleeved on it to move to the nut placement position. The movement of the movable rod (8) is controlled by the drive structure.

3. The deep hole internal nut placement mechanism of claim 2, wherein: The driving structure includes an ejection structure that is moved along the mold closing direction on the side of the moving mold base (2) away from the punch (3). When the ejection structure approaches the moving mold base (2), it ejects the product (18) and demolds it, or when it moves away from the moving mold base (2), it resets. The movement of the ejection structure is controlled by the driving component. A switching structure is provided between the ejection structure and the moving rod (8). When the ejection structure moves close to the moving mold base (2), the switching structure drives the moving rod (8) to move synchronously. When the moving rod (8) moves to the opening of the deep hole (7), the switching structure switches to allow the ejection structure to move independently and demold the product (18) from the moving rod (8). When the ejection structure moves away from the moving mold base (2), the switching structure drives the moving rod (8) to move away from the opening of the deep hole (7). After the moving rod (8) moves to the bottom of the deep hole (7), the switching structure switches to lock the ejection structure and the moving rod (8).

4. The deep hole internal nut placement mechanism of claim 3, wherein: The ejection structure includes a first ejector plate (10) disposed on the side of the moving mold base (2) away from the punch (3) and an ejector rod (11) that protrudes vertically from the moving mold base (2) and the punch (3) on the first ejector plate (10).

5. The deep hole internal nut placement mechanism of claim 4, wherein: The switching structure includes a second ejector plate (12) disposed on the side of the first ejector plate (10) away from the moving mold base (2) at the end of the moving rod (8) away from the opening of the deep hole (7), an elastic clamp (13) fixedly disposed on the side wall of the first ejector plate (10) with its opening facing the second ejector plate (12), and a clamping block (14) fixedly disposed on the side wall of the second ejector plate (12) that can be elastically inserted into the elastic clamp (13) or disengaged from the elastic clamp (13). A limiting structure is provided between the moving mold base (2) and the second ejector plate (12) to restrict the moving rod (8) from continuing to move when it moves to the opening of the deep hole (7) or the bottom of the deep hole (7).

6. A deep hole internal nut placement mechanism according to claim 5, wherein: The limiting structure includes a first limiting rod (15) that protrudes vertically on the second ejector plate (12) toward the moving mold base (2) and abuts against the moving mold base (2) when the moving rod (8) moves to the opening of the deep hole (7); a moving template (1) that is fixedly connected to the moving mold base (2) and located on the side of the second ejector plate (12) away from the moving mold base; and a third limiting rod (16) that protrudes vertically on the moving template (1) toward the moving mold base (2) and abuts against the second ejector plate (12) when the moving rod (8) moves to the bottom of the deep hole (7).

7. A deep hole internal nut placement mechanism according to claim 6, wherein: A second limiting rod (17) is provided on the first ejector plate (10) perpendicularly toward the moving mold base (2). When the first limiting rod (15) abuts against the moving mold base (2), the distance between the second limiting rod (17) and the moving mold base (2) is greater than the depth of the inner nut (9).

8. The deep hole internal nut placement mechanism of claim 5, wherein: The elastic clamp (13) includes a "U"-shaped clamp body (1301) with an opening facing the clamping block (14) and an arc-shaped groove (1302) recessed on the inner sidewall opposite to the clamp body (1301) that fits against the outer ring wall of the clamping block (14) when the clamp body (1301) clamps the clamping block (14).

Images