High-temperature die-casting forming die for hardware

Abstract

The utility model belongs to the technical field of die-casting dies, and discloses a high-temperature die-casting forming die for hardware, which comprises a lower die, an upper die, a cavity, a positioning component and a limiting component, the upper die covers the lower die, and the cavity is arranged between the upper die and the lower die and is used for forming the hardware; the positioning assembly is fixedly connected to the outer side of the upper die and comprises a positioning block with an arc-shaped part; the limiting assembly is fixedly connected to the outer side of the lower die and comprises a limiting block with an arc-shaped groove, and the arc-shaped part is attached to the interior of the arc-shaped groove. The limiting assembly is arranged on the lower die, the positioning assembly matched with the limiting assembly is arranged on the upper die, accurate positioning between the upper die and the lower die is achieved, and the attaching firmness and accuracy between the lower die and the upper die can be visually judged by observing whether attaching between the arc-shaped portion on the positioning assembly and the arc-shaped groove in the limiting assembly is firm or not. And the percent of pass of hardware forming is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of die-casting molds, and in particular relates to a high-temperature die-casting molding mold for hardware parts. Background Art

[0002] High-temperature die-casting is a common production process in hardware manufacturing. Molten metal is injected into a mold cavity and then cooled and solidified under high pressure and high temperature to produce hardware of the desired shape and size. However, the fit and accuracy between the upper and lower molds during high-temperature die-casting are crucial to the quality of the hardware.

[0003] A search revealed that publication number CN210254166U discloses a high-temperature die-casting mold for hardware. In this patent, the first connecting post is inserted into the through-hole of the second connecting post, allowing the upper mold to cover the lower mold. This prevents displacement between the upper and lower molds and ensures their stable installation. However, in actual applications, this method often results in a loose fit between the upper and lower molds, leading to deformation and cracking of the hardware during the molding process, seriously affecting the hardware's pass rate. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a high-temperature die-casting mold for hardware parts, which aims to solve the technical problems in the existing technology to a certain extent, that is, the upper and lower molds often have loose fits, which will cause deformation and cracks in the hardware during the molding process, seriously affecting the qualification rate of the hardware parts.

[0005] The technical solution of the utility model is: a high-temperature die-casting mold for hardware, comprising a lower mold, an upper mold, a cavity, a positioning assembly and a limit assembly, wherein the upper mold is covered on the lower mold, and the cavity is arranged between the upper mold and the lower mold, and is used for molding hardware;

[0006] The positioning assembly is fixedly connected to the outer side of the upper mold and includes a positioning block with an arc-shaped portion;

[0007] The limiting assembly is fixedly connected to the outer side of the lower mold, and comprises a limiting block with an arc-shaped groove, and the arc-shaped portion fits in the arc-shaped groove.

[0008] In some embodiments, fixing ears are fixed on both sides of the positioning block, and strip grooves are formed on the fixing ears.

[0009] In some embodiments, mounting ears are fixed on both sides of the limit block, and a fixing groove is provided on the mounting ear. A rotating sleeve is rotatably connected in the fixing groove, and a pull rod is fixed on the outer surface of the rotating sleeve. One end of the pull rod passes through the strip groove and extends to the top of the fixing ear. A locking nut is provided on the threaded sleeve on the outer surface of the pull rod.

[0010] In some embodiments, an external threaded portion is provided at the top of the pull rod, and an internal threaded portion matching the external threaded portion is provided in the locking nut.

[0011] In some embodiments, a pressure pad is fixed to the bottom of the locking nut, a lower groove connected to the strip groove is provided on the top of the mounting ear, and the bottom of the pressure pad abuts against the inner bottom wall of the lower groove.

[0012] In some embodiments, a sprue bushing is further provided on the upper mold for injecting the die-casting material.

[0013] In some embodiments, a lower mold base is provided at the bottom of the lower mold, a pad is provided on the lower mold base, and a push piece is provided on the top of the pad, and the push piece is used for demolding the hardware after molding.

[0014] In some embodiments, positioning rods are provided at the four corners of the upper mold, and positioning holes compatible with the positioning rods are provided at the four corners of the lower mold. The positioning rods are movably inserted into the positioning holes for preliminary positioning between the upper mold and the lower mold.

[0015] In some embodiments, at least two cavities for forming hardware are provided in the mold cavity.

[0016] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: by arranging a limit assembly on the lower mold and a positioning assembly adapted thereto on the upper mold, precise positioning between the upper and lower molds is achieved, and by observing whether the arc-shaped portion on the positioning assembly and the arc-shaped groove on the limit assembly fit firmly, the firmness and accuracy of the fit between the lower mold and the upper mold can be intuitively judged, thereby improving the qualified rate of hardware molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the utility model;

[0019] Figure 2This is a schematic diagram of the upper mold structure of the utility model;

[0020] Figure 3 For this utility model Figure 2 A local enlarged schematic diagram of point A;

[0021] Figure 4 This is a schematic diagram of the structure of the limit assembly of the utility model.

[0022] In the attached figure:

[0023] 10. Upper mold; 20. Lower mold; 30. Positioning assembly; 31. Positioning block; 32. Arc-shaped portion; 33. Fixing ear; 34. Strip groove; 35. Lower groove; 40. Limiting assembly; 41. Limiting block; 42. Arc-shaped groove; 43. Mounting ear; 44. Fixing groove; 45. Rotating sleeve; 46. Pull rod; 47. Locking nut; 48. Pressure pad; 50. Gate sleeve; 60. Lower mold base; 70. Pad; 80. Push piece; 90. Positioning rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0026] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0027] The present application is described below with reference to specific embodiments and with reference to the accompanying drawings:

[0028] See also Figure 1-4 , a high-temperature die-casting mold for hardware, including a lower mold 20, an upper mold 10, a cavity, a positioning component 30 and a limit component 40, the upper mold 10 is covered on the lower mold 20, and the cavity is set between the upper mold 10 and the lower mold 20 for molding hardware;

[0029] The positioning assembly 30 is fixedly connected to the outer side of the upper mold 10 and includes a positioning block 31 having an arc-shaped portion 32;

[0030] The stop assembly 40 is fixedly connected to the outside of the lower mold 20 and includes a stop block 41 with an arcuate groove 42, into which the arcuate portion 32 fits. The arcuate portion 32 of the stop block 31 fits within the arcuate groove 42 of the stop block 41. This design ensures precise positioning of the upper mold 10 and lower mold 20 during mold closing, thereby improving the molding quality of the hardware component. The coordination between the arcuate portion 32 and the arcuate groove 42 also effectively reduces friction and wear during the mold closing process, extending the mold's service life.

[0031] Fixed ears 33 are fixed on both sides of the positioning block 31, and strip grooves 34 are formed on the fixed ears 33. Mounting ears 43 are fixed on both sides of the limit block 41, and fixed grooves 44 are formed on the mounting ears 43. A rotating sleeve 45 is rotatably connected within the fixing groove 44. A pull rod 46 is fixed to the outer surface of the rotating sleeve 45. One end of the pull rod 46 passes through the strip groove 34 and extends to the top of the fixed ear 33. A locking nut 47 is threadedly sleeved on the outer surface of the pull rod 46. After the mold is closed, the pull rod 46 is rotated to a vertical position, and the locking nut 47 is tightened. The locking nut 47 abuts the top of the fixed ear 33, thereby locking the upper mold 10 and the lower mold 20, ensuring that the upper mold 10 and the lower mold 20 will not loosen under high pressure and high temperature environments.

[0032] An external threaded portion is provided at the top of the pull rod 46, and an internal threaded portion matching the external threaded portion is provided inside the locking nut 47, so that the connection between the pull rod 46 and the locking nut 47 is more firm and reliable and can withstand greater pressure and tension.

[0033] A pressure pad 48 is fixed to the bottom of the locking nut 47, and the top of the mounting ear 43 is provided with a lower groove 35 connected to the strip groove 34. The bottom of the pressure pad 48 abuts against the inner bottom wall of the lower groove 35. The pressure pad 48 can increase the contact area between the locking nut 47 and the mounting ear 43, thereby improving the locking effect between the upper mold 10 and the lower mold 20.

[0034] A sprue sleeve 50 is provided on the upper mold 10. The sprue sleeve 50 can ensure that the die-casting material enters the mold cavity at a stable speed and pressure, thereby improving the molding quality and production efficiency of the hardware. At the same time, the sprue sleeve 50 can also prevent the die-casting material from leaking or splashing during the injection process, keeping the mold clean and tidy.

[0035] A lower die base 60 is provided at the bottom of the lower die 20, a pad 70 is provided on the lower die base 60, and a push piece 80 is provided on the top of the pad 70. The push piece 80 can push the hardware out quickly and smoothly after it is formed, which not only improves production efficiency, but also avoids damage and deformation of the hardware during the demolding process.

[0036] There are positioning rods 90 at the four corners of the upper mold 10, and positioning holes matching the positioning rods 90 are provided at the four corners of the lower mold 20. The positioning rods 90 are movably inserted into the positioning holes and are used for the initial positioning between the upper mold 10 and the lower mold 20. During the mold closing process, the positioning rods 90 can guide the upper mold 10 to accurately align with the position of the lower mold 20.

[0037] There are at least two cavities for forming hardware parts in the mold cavity, which can produce multiple hardware parts at the same time and improve production efficiency.

[0038] Working principle: During the mold closing stage, the upper mold 10 begins to move downward, and the positioning rod 90 guides the upper mold 10 to accurately align with the position of the lower mold 20. When the upper mold 10 and the lower mold 20 approach each other, the arc portion 32 of the positioning block 31 gradually enters the arc groove 42 of the limit block 41;

[0039] When the upper mold 10 is completely covered on the lower mold 20, the positioning block 31 and the limiting block 41 are tightly fitted together. By observing whether the arc portion 32 fits firmly with the arc groove 42, the firmness and accuracy of the fit between the lower mold 20 and the upper mold 10 can be intuitively judged.

[0040] At this time, rotate the tie rod 46 to make it vertical, and tighten the locking nut 47. The locking nut 47 abuts against the top of the fixing ear 33 to ensure that the upper mold 10 and the lower mold 20 will not loosen under high pressure and high temperature environment.

[0041] The die-casting material is injected into the mold cavity at a stable speed and pressure through the sprue bushing 50. During the die-casting process, the mold is subjected to high temperature and high pressure. Due to the arrangement of the positioning block 31, the limit block 41, the pull rod 46 and the locking nut 47, the upper mold 10 and the lower mold 20 can remain stable, ensuring the molding quality of the hardware.

[0042] After die casting is completed, the cooling system in the mold is used to cool the metal parts to ensure that they are fully solidified.

[0043] When the hardware is completely solidified, the pusher 80 is activated and pushes the hardware out of the mold smoothly.

[0044] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0045] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. High temperature die casting mold for hardware, characterized in that: include: Lower mold (20); An upper mold (10) is arranged to cover the lower mold (20); A mold cavity is provided between the upper mold (10) and the lower mold (20) and is used for molding the hardware; A positioning assembly (30) is fixedly connected to the outer side of the upper mold (10) and includes a positioning block (31) having an arc-shaped portion (32); The limiting assembly (40) is fixedly connected to the outer side of the lower mold (20) and comprises a limiting block (41) having an arc-shaped groove (42), wherein the arc-shaped portion (32) is fitted in the arc-shaped groove (42).

2. The high-temperature die-casting mold for hardware according to claim 1, characterized in that: Fixing ears (33) are fixed on both sides of the positioning block (31), and strip grooves (34) are provided on the fixing ears (33).

3. The high temperature die casting mold for hardware according to claim 2, characterized in that: Mounting ears (43) are fixed on both sides of the limit block (41), and a fixing groove (44) is provided on the mounting ear (43). A rotating sleeve (45) is rotatably connected in the fixing groove (44), and a pull rod (46) is fixed on the outer surface of the rotating sleeve (45). One end of the pull rod (46) passes through the strip groove (34) and extends to the top of the fixing ear (33), and a locking nut (47) is threadedly provided on the outer surface of the pull rod (46).

4. The high temperature die casting mold for hardware according to claim 3, characterized in that: An external threaded portion is provided at the top of the pull rod (46), and an internal threaded portion adapted to the external threaded portion is provided inside the locking nut (47).

5. The high temperature die casting mold for hardware according to claim 4, characterized in that: A pressure pad (48) is fixed to the bottom of the locking nut (47), and a lower groove (35) communicating with the strip groove (34) is provided on the top of the mounting ear (43). The bottom of the pressure pad (48) abuts against the inner bottom wall of the lower groove (35).

6. The high temperature die casting mold for hardware according to claim 1, characterized in that: The invention also comprises a sprue sleeve (50) arranged on the upper mold (10) for injecting the die-casting material.

7. The high temperature die casting mold for hardware according to claim 1, characterized in that: A lower die base (60) is provided at the bottom of the lower die (20), a pad (70) is provided on the lower die base (60), a push piece (80) is provided on the top of the pad (70), and the push piece (80) is used for demoulding the hardware after molding.

8. The high temperature die casting mold for hardware according to claim 1, characterized in that: Positioning rods (90) are provided at the four corners of the upper mold (10), and positioning holes adapted to the positioning rods (90) are provided at the four corners of the lower mold (20). The positioning rods (90) are movably inserted into the positioning holes for preliminary positioning between the upper mold (10) and the lower mold (20).

9. The high temperature die casting mold for hardware according to claim 1, characterized in that: At least two cavities for forming hardware parts are provided in the mold cavity.

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