High performance composite forming material drill tail mold

Abstract

The utility model discloses a high -performance composite formula forming material drill tail mould belongs to drill tail mould technical field, including lower mould, the upper die is set up to the lower mould, the recess is opened in the lower mould, the upper die is equipped with the lug, and the lug is set up in the recess. In the utility model, first adopt layered filler design, the upper die uses the formula containing rare earth element to form high hardness work surface (metallographic display is round angle tungsten carbide structure), and the lower mould adopts 20-30 microns granularity's domestic tungsten carbide and constitutes the impact resistance matrix, secondly through the unique concave-convex inlay formula mould structure (non - traditional parallel design), sintering under 55-60 kilograms high pressure hydrogen gas and 1400-1450 DEG C high temperature environment, make the realization molecular level compact combination in the pressing process, compared with traditional vacuum micro - pressure (10 kilograms) sintering, can obviously promote the combination strength between tungsten carbide particles, and finally form the drill tail product with surface high wear resistance and matrix high toughness.

Description

Technical Field

[0001] This utility model belongs to the field of drill tail mold technology, and in particular relates to a high-performance composite molding material drill tail mold. Background Technology

[0002] A self-drilling die is a precision stamping die used to manufacture self-tapping screws or self-drilling screws (commonly known as "self-drilling screws"). Its core function is to process a special geometric structure similar to a drill bit (such as a triangular cutting edge, stepped cutting groove, etc.) at the tail of the screw, so that the screw can penetrate thin metal plates, plastics, or wood on its own when rotating, without the need for pre-drilling. This die is usually made of high-hardness alloy steel (such as SKD11, DC53) through heat treatment and precision grinding. It forms the drilling edge, chip removal groove, and threaded part on the screw blank through a multi-station continuous stamping process, combining cutting efficiency and fastening performance. It is widely used in fields such as building steel structures, color steel plate installation, and automobile manufacturing, significantly improving construction efficiency and reducing assembly costs.

[0003] In actual implementation, traditional processes usually adopt a mold structure design with parallel fillers of dual materials, which has poor impact resistance. In addition, when the upper and lower molds are first closed, there may be misalignment due to insufficient alignment accuracy, which will affect the molding quality, resulting in product defects or reduced mold life.

[0004] Based on this, this utility model designs a high-performance composite molding material drill tail mold to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to solve the problems of poor impact resistance of the mold structure design of the traditional process with dual material parallel filler, and the possibility of misalignment due to insufficient alignment accuracy when the upper and lower molds are first closed, which affects the molding quality and leads to product defects or reduced mold life. Therefore, a high-performance composite molding material drill tail mold is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-performance composite molding material drill tail mold includes a lower mold, an upper mold is mounted on the lower mold, a groove is provided in the lower mold, a protrusion is provided in the upper mold and the protrusion is mounted in the groove, and the same fine-tuning device for adjusting the docking accuracy of the lower mold and the upper mold is fixedly connected to one side of the upper mold and the lower mold, and a fixing device for easy disassembly and assembly is fixedly connected to one side of the fine-tuning device.

[0008] As a further description of the above technical solution:

[0009] The fine-tuning device includes an upper shell and a fixed shell. The upper shell is installed outside the upper mold. An insert plate is provided inside the upper shell and is locked inside the fixed shell. Two arc-shaped plates are provided inside the fixed shell. The same screw is rotatably connected inside the arc-shaped plates. A slot is opened inside the fixed shell and the insert plate is locked inside the slot. A nut is threaded onto the external thread of the screw and is locked outside one of the arc-shaped plates.

[0010] As a further description of the above technical solution:

[0011] The diameter of the screw cross-section is slightly smaller than the width inside the insert plate.

[0012] As a further description of the above technical solution:

[0013] The upper shell overlaps the fixed shell, and the two form a sliding connection.

[0014] As a further description of the above technical solution:

[0015] The fixing device includes two mounting plates and two mounting slots. The two mounting slots are respectively opened in the upper mold and the lower mold. The mounting plates are locked in the mounting slots. The two mounting plates are respectively connected to the upper shell and the fixed shell.

[0016] As a further description of the above technical solution:

[0017] The mounting groove within the upper mold is designed with a certain tilt angle and its length is slightly greater than that of the mounting plate.

[0018] As a further description of the above technical solution:

[0019] The mounting groove is equipped with a magnetic block, and the mounting plate is equipped with a magnetic block on the outside, and the two magnetic blocks attract each other.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0021] 1. In this utility model, a layered filler design is first adopted. The upper mold uses a formula containing rare earth elements to form a high-hardness working surface (metallographically shown as a rounded tungsten carbide structure). The lower mold uses domestically produced tungsten carbide with a particle size of 20-30 micrometers to form an impact-resistant matrix. Secondly, through a unique concave-convex interlocking mold structure (not a traditional parallel design), sintering is carried out in a high-pressure hydrogen environment of 55-60 kg and a high temperature of 1400-1450℃, so that molecular-level dense bonding is achieved during the pressing process. Compared with traditional vacuum micro-pressure (10 kg) sintering, it can significantly improve the bonding strength between tungsten carbide particles, and finally form a drill tail product with both high surface wear resistance and high matrix toughness.

[0022] 2. In this utility model, when the upper mold and the lower mold are first connected, the upper shell is engaged with the slot in the fixed shell through the insert plate, and the screw is engaged with the outside of the upper shell through the cooperation of the arc plate. Then, the nut is rotated, and the nut drives the screw to rotate and move. At this time, one end of the screw causes the upper shell to move, which drives the mounting plate to slide in the mounting groove. When the upper shell moves to the precise connection position, the mounting plate can be disengaged from the mounting groove by pulling the cooperation between the upper shell and the fixed shell, thereby achieving precise connection between the upper mold and the lower mold. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a high-performance composite molding material drill tail mold proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of a high-performance composite molding material drill tail mold with a separate upper and lower mold, as proposed in this utility model.

[0025] Figure 3 This is a three-dimensional structural schematic diagram of a high-performance composite molding material drill tail mold fine adjustment device proposed in this utility model;

[0026] Figure 4 This utility model proposes a high-performance composite molding material drill tail mold. Figure 3 Enlarged structural diagram of part A in the middle;

[0027] Legend:

[0028] 1. Lower mold; 2. Upper mold; 3. Groove; 4. Fine-tuning device; 41. Upper shell; 42. Insert plate; 43. Fixed shell; 44. Arc plate; 45. Screw; 46. Slot; 47. Nut; 5. Fixing device; 51. Mounting groove; 52. Mounting plate. Detailed Implementation

[0029] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-4 ;

[0031] First embodiment:

[0032] This utility model provides a technical solution: a high-performance composite molding material drill tail mold, including a lower mold 1, an upper mold 2 is mounted on the lower mold 1, a groove 3 is provided in the lower mold 1, and a protrusion is provided in the upper mold 2, which is mounted in the groove 3. The matching design of the protrusion and the groove 3 ensures the accurate positioning and stability of the upper mold 2 and the lower mold 1. The fitting method of the protrusion and the groove 3 effectively avoids displacement or loosening of the mold during operation, enhances the structural rigidity of the mold, and can also reduce errors caused by inaccurate docking, thereby ensuring high precision of molding processing, reducing mold wear, and improving the durability and service life of the mold.

[0033] The same fine-tuning device 4 for adjusting the docking accuracy of the lower mold 1 and the upper mold 2 is fixedly connected to one side of the upper mold 2 and the lower mold 1. A fixing device 5 for easy disassembly and assembly is fixedly connected to one side of the fine-tuning device 4.

[0034] During operation, a layered filler design is first adopted. The upper mold 2 uses a formula containing rare earth elements to form a high-hardness working surface (metallographically shown as a rounded tungsten carbide structure). The lower mold 1 uses domestically produced tungsten carbide with a particle size of 20-30 micrometers to form an impact-resistant matrix. Secondly, through a unique concave-convex interlocking mold structure (not a traditional parallel design), sintering is carried out in a high-pressure hydrogen environment of 55-60 kg and a high temperature of 1400-1450℃, so that molecular-level dense bonding is achieved during the pressing process. Compared with traditional vacuum micro-pressure (10 kg) sintering, it can significantly improve the bonding strength between tungsten carbide particles, and finally form a drill tail product with both high surface wear resistance and high matrix toughness.

[0035] Second embodiment:

[0036] Specifically, such as Figure 3-4As shown, the fine-tuning device 4 includes an upper shell 41 and a fixed shell 43. The upper shell 41 is installed outside the upper mold 2. An insert plate 42 is provided inside the upper shell 41 and is engaged in the fixed shell 43. Two arc-shaped plates 44 are provided inside the fixed shell 43, and the same screw 45 is rotatably connected to the arc-shaped plates 44. A slot 46 is opened inside the fixed shell 43, and the insert plate 42 is engaged in the slot 46. A nut 47 is externally threaded onto the screw 45 and is engaged outside one of the arc-shaped plates 44. The diameter of the cross-section of the screw 45 is slightly smaller than the width inside the insert plate 42. The upper shell 41 overlaps the fixed shell 43, and the two form a sliding connection. The fixing device 5 includes two mounting plates 52 and two mounting slots 51. The two mounting slots 51 are respectively opened in the upper mold 2. Inside the lower mold 1, the mounting plate 52 is fitted into the mounting groove 51. The two mounting plates 52 are respectively connected to the upper shell 41 and the fixed shell 43. The mounting groove 51 inside the upper mold 2 is designed with a certain tilt angle and its length is slightly greater than the length of the mounting plate 52. The tilt angle design of the mounting groove 51 allows the mounting plate 52 to be inserted and positioned more naturally in the groove, avoiding the docking error that may be caused by the parallel design. The tilt angle design can automatically align with the best position of the mold during installation, reducing the complexity of manual adjustment. At the same time, the mounting groove 51, which is slightly greater than the length of the mounting plate 52, further ensures the stability during installation, avoids deformation or jamming caused by excessive tightening, and improves the smoothness and reliability of the overall assembly process.

[0037] The mounting slot 51 is equipped with a magnetic block, and the mounting plate 52 is equipped with a magnetic block on the outside. The two magnetic blocks attract each other. The design of the mounting slot 51 and the magnetic blocks allows the mounting plate 52 to be fixed by magnetic force when inserted into the mounting slot 51, which enhances the stability and convenience of installation. This structure can not only avoid errors caused by sliding or loosening during installation, but also achieve quick and safe assembly and disassembly. The use of magnetic blocks greatly improves the assembly efficiency of the mold, reduces the time and effort of manual docking, and ensures the accurate positioning of the mounting plate 52, making the operation of the entire mold simpler and more efficient.

[0038] During operation, when the upper mold 2 and the lower mold 1 are first docked, the upper shell 41 is engaged with the slot 46 in the fixed shell 43 through the insert plate 42. The screw 45 is engaged with the arc plate 44 and is locked on the outside of the upper shell 41. Then, the nut 47 is rotated, which drives the screw 45 to rotate and move. At this time, one end of the screw 45 causes the upper shell 41 to move, which drives the mounting plate 52 to slide in the mounting groove 51. When the upper shell 41 moves to the precise docking position, the mounting plate 52 can be disengaged from the mounting groove 51 by pulling the engagement between the upper shell 41 and the fixed shell 43, thereby achieving precise docking between the upper mold 2 and the lower mold 1.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-performance composite molding material drill tail mold, comprising a lower mold (1), characterized in that, The lower mold (1) is fitted with an upper mold (2). The lower mold (1) has a groove (3) inside. The upper mold (2) has a protrusion inside, and the protrusion is fitted in the groove (3). The upper mold (2) and the lower mold (1) are fixedly connected to the same fine-tuning device (4) for adjusting the docking accuracy of the lower mold (1) and the upper mold (2). The fine-tuning device (4) is fixedly connected to a fixing device (5) that is easy to disassemble and assemble.

2. The high-performance composite molding material drill tail mold according to claim 1, characterized in that, The fine-tuning device (4) includes an upper shell (41) and a fixed shell (43). The upper shell (41) is installed outside the upper mold (2). An insert plate (42) is provided inside the upper shell (41). The insert plate (42) is locked inside the fixed shell (43). Two arc-shaped plates (44) are provided inside the fixed shell (43). The same screw (45) is rotatably connected inside the arc-shaped plates (44). A slot (46) is opened inside the fixed shell (43), and the insert plate (42) is locked inside the slot (46). A nut (47) is threaded onto the screw (45). The nut (47) is locked outside one of the arc-shaped plates (44).

3. The high-performance composite molding material drill tail mold according to claim 2, characterized in that, The diameter of the cross-section of the screw (45) is slightly smaller than the width inside the insert plate (42).

4. The high-performance composite molding material drill tail mold according to claim 2, characterized in that, The upper shell (41) overlaps the fixed shell (43), and the two form a sliding connection.

5. A high-performance composite molding material drill tail mold according to claim 2, characterized in that, The fixing device (5) includes two mounting plates (52) and two mounting slots (51). The two mounting slots (51) are respectively opened in the upper mold (2) and the lower mold (1). The mounting plates (52) are locked in the mounting slots (51). The two mounting plates (52) are respectively connected to the outside of the upper shell (41) and the fixed shell (43).

6. The high-performance composite molding material drill tail mold according to claim 5, characterized in that, The mounting groove (51) located in the upper mold (2) is designed with a certain tilt angle and its length is slightly greater than the length of the mounting plate (52).

7. A high-performance composite molding material drill tail mold according to claim 6, characterized in that, The mounting groove (51) is provided with a magnetic block, and the mounting plate (52) is provided with a magnetic block outside, and the two magnetic blocks attract each other.

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