A screw ejection mold

Abstract

The utility model belongs to the technical field of fastener, especially relate to a screw ejection mould, including mould main part, the cavity and the nut hole that communicates with the cavity are set up in mould main part, be equipped with the ejection mechanism and the mounting mechanism in mould main part, the ejection mechanism includes push pipe and ejector rod, and the end of push pipe is adapted with nut hole, and the mounting mechanism includes punch stick, punch stick fixed sleeve and lock seat, and the lock seat is connected with the sliding of ejector rod, and push pipe and ejector rod form the top pressure cooperation of separable, compared with prior art, the utility model can separate the screw ejection in time after stamping.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and more specifically, to a screw ejection mold. Background Technology

[0002] Screw molds, as core specialized tools for screw manufacturing, are able to efficiently and accurately produce screws of various specifications and models thanks to their precise process design and structural optimization. Screws, as indispensable fasteners in the industrial field, have an extremely wide range of applications. They not only deeply penetrate heavy industries such as machinery manufacturing and automobile manufacturing, but also play a crucial role in niche markets such as electronic equipment and construction engineering, serving as vital components to ensure the stable connection of various equipment and structures.

[0003] In the screw manufacturing process, the forming process of the screw groove is particularly critical. Currently, screw grooves are mostly achieved through stamping technology. This technology uses a stamping die to apply pressure to the screw head, forming a standard groove to meet the needs of subsequent use with tools such as wrenches. However, existing stamping die designs are relatively simple, generally equipped with only a single stamping head. This design has significant drawbacks in automated production lines.

[0004] In high-speed, continuous automated production processes, if a screw gets stuck on the stamping head due to material properties, uneven stamping pressure, or die wear, it becomes difficult to remove quickly and smoothly. This can disrupt the subsequent automatic screw-addition process, causing the stuck screw to collide with the previous one during transport or assembly. Such collisions not only damage the screw's surface, affecting its appearance, but can also damage the thread structure or hexagonal groove precision, rendering the screw unusable and leading to material waste and reduced production efficiency. Furthermore, frequent screw collisions can impact automated equipment, increasing failure rates and maintenance costs, posing a serious threat to the stability and economy of the overall production process. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a screw ejection mold that can automatically eject the screw after production.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A mold body includes a cavity and a nut hole communicating with the cavity. The mold body is equipped with an ejection mechanism and an installation mechanism. The ejection mechanism includes a push tube and an ejection rod. The end of the push tube is adapted to a nut hole, which can be circular, hexagonal, or rectangular. The mounting mechanism includes a punching rod, a punch retaining sleeve, and a locking seat. The locking seat has a slide rail. The lower end of the punching rod and the upper end of the locking seat are both threadedly connected to the punch retaining sleeve. The lower end of the locking seat is fixedly connected to the mold body. The ejector rod is placed in the slide and slidably connected to the locking seat, and the push tube and the ejector rod form a separable top-pressing fit.

[0007] The present invention is further configured such that: the locking seat is composed of two cylinders with different diameters, both cylinders are provided with external threads, the inner wall of the mold body is provided with internal threads corresponding to the locking seat, and the lower end of the locking seat is threadedly connected to the mold body.

[0008] The present invention is further configured such that: there are at least three slides, and the three slides are arranged in a triangular pattern.

[0009] The present invention is further configured such that: the push tube includes an ejector portion and a stepped portion, and a connecting hole is provided in the stepped portion through the ejector portion. The diameter of the connecting hole in the stepped portion is larger than the diameter of the connecting hole in the ejector portion. One end of the punching and fixing rod is placed in the connecting hole and the other end is threadedly connected to the punch fixing sleeve. There is a placement space for placing the workpiece between the punching rod and the connecting hole.

[0010] The present invention is further configured such that a hexagonal hole is provided on the lower end face of the locking seat.

[0011] The present invention is further configured such that: a cylindrical rear pad is provided inside the mold body, and a gasket is slidably connected inside the rear pad, with the end of the gasket abutting against the ejector rod.

[0012] Including the mold body, ejection mechanism, mounting mechanism, and punching rod, the multi-component linkage design of the mold structure optimizes the ejection structure, realizes the coordinated work between the ejection rod and the push tube, and, combined with the locking seat, punch fixing sleeve and other structures, makes the ejection action smoother and more stable. It effectively solves the efficiency and quality problems caused by jamming and poor ejection of current stamping dies, and improves the ease of operation and stability of automated production lines.

[0013] By adopting the above technical solution, the beneficial effects of this utility model are as follows: 1. Through the linkage design of the ejection mechanism and the installation mechanism, the ejection force is more evenly distributed, which can promptly eject and separate the screw after stamping, avoiding the problems of subsequent equipment chaos and screw damage caused by the jamming of existing molds, and ensuring the smooth operation of the automated process; 2. The three ejector bars are arranged in a triangular pattern and combined with the push tube and gasket to form a coordinated ejection structure. The ejection force is transmitted stably and the response speed is fast, which reduces the shaking caused by physical vibration and improves the ejection efficiency in high-speed automated production. 3. Under the action of thrust, the stable mechanical structure of the ejection mechanism ensures the accuracy of the screw ejection process, and will not cause additional pressure or damage to the screw groove, thus ensuring the forming accuracy of the hexagonal head and reducing the defect rate. 4. The unique structure allows for modular assembly and disassembly and adjustment. The optimized structure greatly reduces the time required for mold maintenance and replacement. It can achieve stable operation for a long time without frequent replacement of parts, which helps to improve the overall user experience. 5. The overall design takes into account the force balance between the components. For example, the threaded fit between the locking seat and the punch fixing sleeve can reduce uneven wear. The shims and locking seats in the ejection mechanism can balance the pressure, reduce component wear from the source, and significantly extend the service life of the whole machine, making it suitable for long-term, high-intensity application scenarios. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is an exploded view of an embodiment of the present utility model; Figure 3 This is a cross-sectional view of an embodiment of the present utility model.

[0015] 1. Mold body; 2. Nut hole; 3. Ejection mechanism; 4. Mounting mechanism; 5. Push tube; 6. Ejection rod; 7. Punch rod fixing sleeve; 8. Locking seat; 9. Slide rail; 10. Ejection part; 11. Step part; 12. Connecting hole; 13. Hexagonal hole; 14. Back pad; 15. Gasket; 16. Product; 17. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] like Figure 1 As shown, A screw ejection mold is mainly used to process products 17 of different specifications, including hexagonal head screws and round head screws, and can efficiently complete the forming and ejection process of product 17.

[0019] The mold body 1 has an internal cavity and a nut hole 2 communicating with the cavity. The shape of the nut hole 2 can be adjusted according to the specifications of the product 17 to be processed. For example, a hexagonal nut hole 2 is used when processing hexagonal products 17, and a circular nut hole 2 is used when processing round-headed products 17. The bottom of the mold body 1 is connected to an external power mechanism to drive the operation of the ejection mechanism 3.

[0020] like Figure 2 As shown, The mold body has an ejection mechanism 3 and a mounting mechanism 4. The ejection mechanism 3 is used to eject the processed product 17, and the mounting mechanism 4 can support the product 17 and the ejection mechanism 3.

[0021] The ejection mechanism 3 consists of a push tube 5 and an ejection rod 6. The push tube 5 includes an ejection part 11 and a stepped part 12. The bottom of the stepped part 12 abuts against the ejection rod 6, facilitating the ejection rod 6 to push the push tube 5 out. The shape of the ejection part 11 matches the nut hole 2 to ensure stability during ejection. The ejection rod 6 is a slender cylinder. The upper end of the ejection rod 6 abuts against the lower surface of the stepped part 12. When force is applied, it can slide along the slide rail 10 inside the locking seat 9 to push the push tube 5.

[0022] The mounting mechanism 4 includes a punching rod 7, a punch retaining sleeve 8, and a locking seat 9. One end of the punching rod 7 is fixed inside the punch retaining sleeve 8 by a threaded connection. The length of the thread connecting the punching rod 7 and the punch retaining sleeve 8 controls the extension length of the punching rod 7, thereby controlling the depth of the hole on the product 17. In use, one end of the product 17 is placed inside the cavity and fitted onto the outer wall of the punching rod 7, while the other end of the product 17 is placed outside the nut hole 2 for processing. Because the product 17 will generate a strong impact force during processing, the diameter of the hole on the product 17 is matched with that of the punching rod 7 to ensure that the product 17 will not deform during processing, thus providing support for the product 17.

[0023] The locking seat 9 consists of two cylinders with different diameters, both of which have external threads. The smaller diameter cylinder is threaded to the punch fixing sleeve 8, while the larger diameter cylinder is directly fitted and fixed to the mold body 1. The lower end face of the larger diameter cylinder has a hexagonal hole 14. By rotating the hexagonal hole 14 with a screwdriver, the locking seat 9 is fixed to the mold body 1. The mold body 1 has a mating internal thread. A slide rail 10 is formed along the axial direction on the locking seat 9 to accommodate the sliding of the ejector rod 6.

[0024] The bottom of the mold body 1 is equipped with a tubular rear pad 15, which is used to support the locking seat 9 and reduce the force on the locking seat 9. The rear pad 15 has a movable shim 16 inside. The diameter of the shim 16 is smaller than the inner diameter of the rear pad 15, so that the shim 16 can move up and down inside the rear pad 15 when subjected to external force.

[0025] like Figure 3 As shown, The mold's workflow is divided into two stages: product molding and ejection / removal. First, the screw forming machine processes and shapes the nut head of product 17. After product 17 is formed, the force rod on the external screw forming machine pushes the washer 16 to move upward. The washer 16 pushes the ejector rod 6 to slide upward along the slide rail 10. The ejector rod 6 applies a thrust to the push tube 5, ejecting product 17 out of the nut hole 2.

[0026] The following example illustrates the complete processing of a hexagonal product (model 17): First, select a mold body 1 that fits the hexagonal head and adjust the specifications of the punching rod 7 so that the diameter of the punching rod 7 matches the inner diameter of the product 17 being processed. Then, connect the punching rod 7 to the punch fixing sleeve 8, and then put the push tube 5 on the outer wall of the punching rod 7. Next, thread one end of the locking seat 9 to the punch fixing sleeve 8. Then, insert the ejector rod 6 into the slide 10. Finally, use a screwdriver to rotate the hexagonal hole 14 at the lower end of the locking seat 9 to fix the locking seat 9 to the mold body 1. Then, place the back pad 15 inside the mold body 1. The diameter of the back pad 15 is smaller than the inner diameter of the mold body 1. The back pad 15 supports the locking seat 9. Finally, place the washer 16 inside the back pad 15. The diameter of the washer 16 is smaller than the inner diameter of the back pad 15, so the washer 16 can slide inside the back pad 15.

[0027] The assembled mold body 1 is installed on the screw forming machine, which has a force bar that abuts against the washer 16.

[0028] Place the product 17 to be processed into the nut hole 2, so that one end of the product 17 is placed between the punching rod 7 and the inner wall of the push tube 5. After the product 17 is processed, the force rod will push the washer 16. Since the washer 16 is in contact with the lower end face of the ejector rod 6, the upward movement of the washer 16 will drive the ejector rod 6 to slide in the slide 10. The upward movement of the ejector rod 6 will push the step part 12 on the push tube 5. Since the step part 12 and the ejector part 11 are integrally formed, the ejector part 11 will push the product 17 out. After the push tube 5 pushes the product 17 out completely, the external force is removed, and the push tube 5 automatically resets, completing the processing cycle.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A screw ejection mold, comprising a mold body (1), wherein the mold body (1) has a cavity and a nut hole (2) communicating with the cavity, characterized in that: The mold body (1) is provided with an ejection mechanism (3) and an installation mechanism (4). The ejection mechanism (3) includes a push tube (5) and an ejection rod (6). The end of the push tube (5) is adapted to the nut hole (2). The nut hole (2) is circular, hexagonal, or rectangular in shape. The mounting mechanism (4) includes a punching rod (7), a punch fixing sleeve (8), and a locking seat (9). A slide (10) is provided on the locking seat (9). The lower end of the punching rod (7) and the upper end of the locking seat (9) are threaded to the punch fixing sleeve (8). The lower end of the locking seat (9) is fixedly connected to the mold body (1). The ejector rod (6) is placed in the slide (10) and slidably connected to the locking seat (9). The push tube (5) and the ejector rod (6) form a separable top-pressing fit.

2. The screw ejection mold according to claim 1, characterized in that: The locking seat (9) is composed of two cylinders with different diameters. Both cylinders are provided with external threads. The inner wall of the mold body (1) is provided with internal threads corresponding to the locking seat (9). The lower end of the locking seat (9) is threadedly connected to the mold body (1).

3. The screw ejection mold according to claim 1, characterized in that: The slide (10) has at least three slides, and the three slides (10) are arranged in a triangular pattern.

4. The screw ejection mold according to claim 1, characterized in that: The push tube (5) includes an ejector part (11) and a step part (12). A connecting hole (13) is provided in the step part (12) through the ejector part (11). The diameter of the connecting hole (13) in the step part (12) is larger than the diameter of the connecting hole (13) in the pusher part. One end of the punching fixing rod is placed in the connecting hole (13) and the other end is threaded to the punch fixing sleeve (8). There is a placement space for placing the workpiece between the punching rod (7) and the connecting hole (13).

5. A screw ejection mold according to claim 1, characterized in that: The locking seat (9) has a hexagonal hole (14) on its lower end face.

6. A screw ejection mold according to claim 1, characterized in that: The mold body (1) is also provided with a cylindrical rear pad (15), and a gasket (16) is slidably connected inside the rear pad (15). The end of the gasket (16) abuts against the ejector rod (6).

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