Quick replacement structure for nail making machine mold

Through innovative design of the mold base assembly and mold core assembly, the rapid replacement of mold components is achieved by using pneumatic push rods and limit pin structures, which solves the problem of low mold replacement efficiency in nail making machines, improves operating efficiency, and ensures processing accuracy and structural stability.

CN224128504UActive Publication Date: 2026-04-17YANGZHOU KUNZE MASCH MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YANGZHOU KUNZE MASCH MFG CO LTD
Filing Date
2025-04-02
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Conventional nail-making machines have complex mold structures, making mold component replacement time-consuming and labor-intensive, thus affecting operational efficiency.

Method used

The design employs a mold base assembly and a mold core assembly, utilizing a pneumatic push rod and limit pin structure to achieve rapid replacement of the mold core assembly. High-strength alloy materials and damping alloy materials are used to stabilize the connection and absorb vibration energy to ensure structural stability.

Benefits of technology

It enables rapid replacement of mold components, improves operational efficiency, and ensures processing accuracy and device stability through high-strength materials and structural design.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a quick replacement structure for a nail making machine mould, which relates to the technical field of nail making machine moulds, and comprises a mould seat assembly and a mould core assembly, the mould core assembly is embedded in the top of the mould seat assembly, a pedestal is arranged at the bottom of the mould seat assembly, and a processing piece is vertically inserted in the top of the mould core assembly. According to the quick replacement structure of the nail making machine mold, the assembling groove matched with the surface structure of the mold core body is formed in the middle of the fixed base, and the limiting hole, the fixing hole, the fixing connecting hole and the positioning connecting hole formed in the surface between the mold core body and the fixed base are matched, so that stable structure combination butt joint can be carried out under the use of the limiting pin and the fixing pin; after the limiting pin and the fixing pin are detached, under the structural operation of the pneumatic push rod, the mold core assembly can be vertically pushed out from the interior of the mold base assembly, so that the mold core assembly can be conveniently and rapidly replaced, and the stability after the mold base assembly and the mold core assembly are in butt joint is guaranteed through the structural use that the positioning pile is matched with the positioning connecting hole.
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Description

Technical Field

[0001] This utility model relates to the field of nail making machine mold technology, specifically a quick-change structure for nail making machine molds. Background Technology

[0002] The nail-making machine die is a key component used in nail manufacturing. Its main function is to shape metal wire into the desired nail shape. Nail-making machine dies are usually made of steel alloy, which has high hardness, wear resistance, and good toughness, and can withstand the high-speed impact and violent movement of the nail-making machine.

[0003] Conventional nail-making machine molds have relatively complex structures, and manual replacement of parts by operators is time-consuming and labor-intensive, affecting work efficiency.

[0004] Therefore, in view of this, we studied and improved the existing structure and its shortcomings, and proposed a quick-change structure for nail making machine molds. Utility Model Content

[0005] The purpose of this invention is to provide a quick-change structure for nail-making machine molds to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a quick-change structure for a nail-making machine mold, comprising a mold base assembly and a mold core assembly. The mold core assembly is embedded in the top of the mold base assembly, and a base is installed at the bottom of the mold base assembly. A processing part is vertically inserted into the top of the mold core assembly. The mold base assembly includes a fixed base, shock-absorbing piles, an assembly groove, a pneumatic push rod, a positioning pile, a limiting hole, and a fixing hole. Shock-absorbing piles are provided at the four opposite corners of the fixed base, and an assembly groove is provided in the middle of the top of the fixed base. A pneumatic push rod is embedded in the bottom side of the assembly groove, and a positioning pile is vertically provided on the bottom surface of the assembly groove. Limiting holes are provided on the left and right sides of the top surface of the fixed base at the assembly groove, and fixing holes are provided on the upper ends of the front and rear sides of the fixed base.

[0007] Furthermore, the positioning piles and shock-absorbing piles are integrated with the fixed base, and the pneumatic push rods are vertically installed on the bottom side of the assembly groove and there are four sets of them.

[0008] Furthermore, the limiting hole is obliquely opened and communicates with the interior of the assembly groove, and the fixing hole is horizontally opened and communicates with the interior of the assembly groove.

[0009] Furthermore, the mold core assembly includes a mold core body, a cavity, a limiting connection hole, a fixing connection hole, and a positioning connection hole. The mold core body has a cavity in the middle, and the left and right sides of the mold core body have limiting connection holes. The front and rear sides of the mold core body have fixing connection holes, and the bottom surface of the mold core body has a positioning connection hole.

[0010] Furthermore, the limiting holes are arranged at equal intervals on the side of the mold core body in an oblique structure, and the limiting holes are horizontally opened on the side of the mold core body, and the limiting holes are vertically opened on the bottom surface of the mold core body. Moreover, the inner surface structure of the limiting holes matches the outer surface structure of the positioning pile.

[0011] Furthermore, limit pins are symmetrically inserted between the mold core assembly and the mold base assembly, and fixing pins are symmetrically installed between the mold core assembly and the mold base assembly. Moreover, the mold base assembly is installed on the top surface of the base with an embedded structure.

[0012] Furthermore, the inner surface structure of the limiting hole matches the outer surface structure of the limiting pin, and the outer surface structure of the fixing pin matches the inner surface structure of the fixing hole.

[0013] Furthermore, the inner surface structure of the limiting hole matches the outer surface structure of the limiting pin, and the inner surface structure of the fixing hole matches the outer surface structure of the fixing pin.

[0014] This utility model provides a quick-change structure for nail-making machine molds, which has the following beneficial effects:

[0015] 1. This utility model features four sets of pneumatic push rods embedded in the bottom of the assembly slot. When the limiting pins and fixing pins connecting the combined mold base assembly and the mold core assembly are removed, the pneumatic push rods extend and retract, generating a structural thrust from the bottom of the mold core assembly upwards. This allows the mold core assembly to be quickly detached from the mold base assembly. This structure assists operators in quickly replacing the mold core assembly, avoiding the time-consuming and laborious process of manually removing it from the tightly fitted assembly slot, which reduces replacement efficiency. Furthermore, the mold core assembly is made entirely of high-strength alloy steel, a commonly used shock-absorbing material with high strength, high elasticity, and good tempering resistance. It can withstand various impacts and vibrations generated during the processing of workpieces. Combined with the mold base assembly made of damping alloy material, the material properties allow it to quickly convert external vibrations into heat energy and dissipate it while withstanding high-intensity vibrations and impacts, thus ensuring the service life and stability of the device structure.

[0016] 2. This utility model, by symmetrically and obliquely opening limiting holes at the position where the assembly groove is opened on the fixed base, and simultaneously opening fixing holes horizontally on the front and rear sides of the fixed base, and cooperating with the limiting and fixing holes on the left and right sides and the front and rear sides of the mold core body in a corresponding structural position, allows the limiting pins to be obliquely inserted into the limiting holes and fixing holes, and the fixing pins to be horizontally inserted into the fixing holes and positioning holes in sequence. Using the above structure, the structural connection between the mold core assembly and the mold base assembly can be guaranteed to the greatest extent after assembly and docking, avoiding unnecessary structural loosening during the processing of the workpiece, thus affecting the processing accuracy of the workpiece. In addition, by setting positioning pins on the inner bottom surface of the assembly groove, and cooperating with the positioning holes on the bottom surface of the mold core body that match the structure, the accuracy and stability of the mold core assembly after being vertically embedded into the middle assembly groove of the mold base assembly can be further ensured, thus ensuring the stable use of the device structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main body of a quick-change structure for a nail-making machine mold according to the present invention;

[0018] Figure 2 This is an exploded structural diagram of the main body of a nail-making machine mold quick-change structure according to the present invention;

[0019] Figure 3 This is a cross-sectional view of a mold base assembly for a quick-change structure of a nail-making machine mold, according to this utility model.

[0020] Figure 4 This is a cross-sectional view of the core assembly of a nail-making machine mold quick-change structure according to the present invention.

[0021] In the diagram: 1. Mold base assembly; 101. Fixed base; 102. Vibration damping pile; 103. Assembly groove; 104. Pneumatic push rod; 105. Positioning pile; 106. Limiting hole; 107. Fixing hole; 2. Mold core assembly; 201. Mold core body; 202. Cavity; 203. Limiting connection hole; 204. Fixing connection hole; 205. Positioning connection hole; 3. Platform; 4. Machined part; 5. Limiting pin; 6. Fixing pin. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] like Figures 1 to 4As shown, a quick-change structure for a nail-making machine mold includes a mold base assembly 1 and a mold core assembly 2. The mold core assembly 2 is embedded in the top of the mold base assembly 1, and a base 3 is installed at the bottom of the mold base assembly 1. A processing part 4 is vertically inserted into the top of the mold core assembly 2. The mold base assembly 1 includes a fixed base 101, shock-absorbing piles 102, an assembly groove 103, a pneumatic push rod 104, a positioning pile 105, a limiting hole 106, and a fixing hole 107. Shock-absorbing piles 102 are provided at the four diagonal corners of the fixed base 101, and an assembly groove 103 is opened in the middle of the top of the fixed base 101. A pneumatic push rod 104 is embedded in the bottom side of the inside of the assembly groove 103, and a positioning pile 105 is vertically arranged on the bottom side surface of the inside of the assembly groove 103. The top surface of the fixed base 101 is located on the left and right sides of the assembly groove 103. Each component has a limiting hole 106, and the upper ends of both the front and rear sides of the fixed base 101 have fixing holes 107. The positioning pile 105 and the shock-absorbing pile 102 are integrated with the fixed base 101. The pneumatic push rod 104 is vertically installed on the bottom side of the assembly groove 103 and there are four sets. The limiting hole 106 is opened obliquely and communicates with the interior of the assembly groove 103. The fixing hole 107 is opened horizontally and communicates with the interior of the assembly groove 103. By embedding four sets of pneumatic push rods 104 on the bottom side of the assembly groove 103, when the limiting pin 5 and fixing pin 6 used to connect the combined mold base assembly 1 and the mold core assembly 2 are removed, the pneumatic push rod 104 is used to generate a structural thrust from the bottom of the mold core assembly 2 from bottom to top, thereby quickly detaching the mold core assembly 2 from the interior of the mold base assembly 1.

[0024] like Figures 1 to 4As shown, the mold core assembly 2 includes a mold core body 201, a cavity 202, a limiting connection hole 203, a fixing connection hole 204, and a positioning connection hole 205. The cavity 202 is formed in the middle of the mold core body 201, and the limiting connection holes 203 are formed on both the left and right sides of the mold core body 201. The fixing connection holes 204 are formed on both the front and rear sides of the mold core body 201, and the positioning connection hole 205 is formed on the bottom surface of the mold core body 201. The limiting connection holes 203 adopt an oblique structure. Equally spaced openings are provided on the sides of the mold core body 201, and limiting holes 203 are horizontally opened on the sides of the mold core body 201, and vertically opened on the bottom surface of the mold core body 201. The inner surface structure of the limiting holes 203 matches the outer surface structure of the positioning pins 105. Limiting pins 5 are symmetrically inserted between the mold core assembly 2 and the mold base assembly 1, and fixing pins 6 are symmetrically installed between the mold core assembly 2 and the mold base assembly 1. The mold base assembly 1 is installed on the top surface of the base 3 using an embedded structure. The inner surface structure of the limiting hole 106 matches the outer surface structure of the limiting pin 5. The outer surface structure of the fixing pin 6 matches the inner surface structure of the fixing hole 107. The inner surface structure of the limiting connection hole 203 matches the outer surface structure of the limiting pin 5. The inner surface structure of the fixing connection hole 204 matches the outer surface structure of the fixing pin 6. By symmetrically and obliquely opening the limiting holes 106 at the position where the assembly groove 103 is opened on the fixed base 101, and simultaneously opening the fixing holes 107 horizontally on the front and rear sides of the fixed base 101, and cooperating with the limiting connection holes 203 and fixing connection holes 204 on the left and right sides and the front and rear sides of the mold core body 201 which are structurally opposite to it, the limiting pin 5 can be obliquely inserted into the limiting hole 106 and the fixing connection hole 204, and the fixing pin 6 can be horizontally inserted into the fixing hole 107 and the positioning connection hole 205 in sequence.

[0025] In summary, as Figures 1 to 4 As shown, the nail making machine has a quick-change mold structure. When in use, firstly, when it is necessary to install the mold core assembly 2 in the middle of the mold base assembly 1, the positioning hole 205 at the bottom of the mold core body 201 is aligned with the positioning pin 105 inside the assembly groove 103. By utilizing the structural matching between the outer surface of the mold core body 201 and the inner wall surface of the assembly groove 103, the entire mold core assembly 2 is slid down against the inner wall of the assembly groove 103, and the positioning hole 205 is sleeved on the surface of the positioning pin 105, so that the mold core assembly 2 is embedded into the interior of the mold base assembly 1.

[0026] Then, two sets of fixing pins 6 are inserted into the fixing holes 107 on the front and rear sides of the mold base assembly 1, and inserted into the positioning holes 205 on the front and rear sides of the mold core body 201. Then, eight sets of limiting pins 5 are inserted into the limiting holes 106 opened at the top of the fixing base 101 one by one, with four sets on each side, and simultaneously inserted into the limiting holes 203 opened at the side of the mold core body 201, so as to stably combine the mold base assembly 1 and the mold core assembly 2.

[0027] Then, the workpiece 4 to be processed is placed inside the cavity 202 of the mold core body 201 and processed using external stamping equipment. During this process, the mold base assembly 1 and the base 3 can utilize their own material properties to quickly convert external vibrations into heat energy and dissipate them while withstanding high-intensity vibration and impact, thereby ensuring the stability of the processing structure.

[0028] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A structure for quick change of die in a nail making machine comprising a die holder assembly (1) and a die core assembly (2) characterized in that: The mold base assembly (1) has a mold core assembly (2) embedded in its top, and a base (3) installed at the bottom of the mold base assembly (1). A machined part (4) is vertically inserted into the top of the mold core assembly (2). The mold base assembly (1) includes a fixed base (101), a shock absorber (102), an assembly groove (103), a pneumatic push rod (104), a positioning post (105), a limiting hole (106), and a fixing hole (107). The fixed base (101) has shock absorbers at its four opposite corners. The vibrating pile (102) has an assembly groove (103) in the middle of the top of the fixed base (101), and a pneumatic push rod (104) is embedded in the bottom of the assembly groove (103). A positioning pile (105) is vertically arranged on the bottom surface of the assembly groove (103). Limiting holes (106) are opened on the top surface of the fixed base (101) on both the left and right sides of the assembly groove (103), and fixing holes (107) are opened on the upper ends of the front and rear sides of the fixed base (101).

2. The nail making machine mold quick replacement structure according to claim 1, characterized by, The positioning pile (105) and the shock-absorbing pile (102) are integrated with the fixed base (101), and the pneumatic push rod (104) is vertically installed on the bottom side of the assembly groove (103) and is provided in four sets.

3. The nail making machine mold quick replacement structure according to claim 1, characterized by, The limiting hole (106) is obliquely opened and connected to the interior of the assembly groove (103), and the fixing hole (107) is horizontally opened and connected to the interior of the assembly groove (103).

4. The nail making machine mold quick replacement structure according to claim 1, characterized by, The mold core assembly (2) includes a mold core body (201), a cavity (202), a limiting connection hole (203), a fixing connection hole (204), and a positioning connection hole (205). The mold core body (201) has a cavity (202) in the middle, and the mold core body (201) has limiting connection holes (203) on both the left and right sides. The mold core body (201) has fixing connection holes (204) on both the front and rear sides, and the mold core body (201) has a positioning connection hole (205) on the bottom surface.

5. The nail making machine mold quick replacement structure according to claim 4, characterized by, The limiting holes (203) are arranged at equal intervals in an oblique structure on the side of the mold core body (201). The limiting holes (203) are horizontally opened on the side of the mold core body (201) and vertically opened on the bottom surface of the mold core body (201). The inner surface structure of the limiting holes (203) matches the outer surface structure of the positioning pile (105).

6. The quick-change structure for a nail-making machine mold according to claim 4, characterized in that, Limiting pins (5) are symmetrically inserted between the mold core assembly (2) and the mold base assembly (1), and fixing pins (6) are symmetrically installed between the mold core assembly (2) and the mold base assembly (1). The mold base assembly (1) is installed on the top surface of the base (3) with an embedded structure.

7. The nail maker mold quick change structure according to claim 6, wherein The inner surface structure of the limiting hole (106) matches the outer surface structure of the limiting pin (5), and the outer surface structure of the fixing pin (6) matches the inner surface structure of the fixing hole (107).

8. The nail making machine mold quick replacement structure according to claim 6, characterized by, The inner surface structure of the limiting hole (203) and the outer surface structure of the limiting pin (5) are matched with each other, and the inner surface structure of the fixing hole (204) and the outer surface structure of the fixing pin (6) are matched with each other.