Crankshaft punching machine

Abstract

The crankshaft punching machine comprises a machine frame, a crankshaft mechanism is assembled on the machine frame, an assembling base is arranged at the bottom of the crankshaft mechanism, and an upper die base is assembled at the bottom of the assembling base. An assembling groove with a downward opening is formed in the center of the bottom of the upper die base, and a movable die is assembled in the assembling groove. Limiting convex edges are arranged on the left side and the right side of the movable mold, and limiting assemblies matched with the limiting convex edges are assembled on the left side and the right side of the assembling groove. And through the interaction of the limiting convex edges on the two sides and the limiting assemblies, the phenomenon that the movable die deviates or falls off in the working process can be effectively prevented, and the machining precision is guaranteed. And meanwhile, the movable mold can be conveniently disassembled and assembled through the rotary limiting assembly, and mold replacement and maintenance work can be conveniently carried out.

Description

Technical Field

[0001] The utility model belongs to the technical field of crankshaft punching machines, and particularly relates to a crankshaft punching machine. Background Art

[0002] Some existing crankshaft punch presses use relatively simple methods, such as bolt fastening, to secure the movable die and upper die holder. While these methods can ensure a certain degree of stability, the frequent replacement of dies of different specifications or types often results in a cumbersome and time-consuming disassembly process, reducing production efficiency. Furthermore, some presses rely solely on a single mechanical structure (such as screws) to secure the movable die, which can easily loosen under prolonged, high-frequency operation, compromising machining accuracy and even leading to safety accidents.

[0003] Therefore, based on some of the above situations in the prior art, this application has been further designed and improved. Utility Model Content

[0004] In response to the above problems, this application proposes a new crankshaft punch press design scheme. Through a more reasonable and effective movable mold limit and fixation design, it not only simplifies the mold replacement process and improves work efficiency; it also enhances the safety performance and working stability of the entire device, effectively solving many defects existing in the existing technology.

[0005] In order to solve the above technical problems, the present invention solves them through the following technical solutions.

[0006] A crankshaft punch press comprises a frame, a crank mechanism mounted on the frame, an assembly seat disposed at the bottom of the crank mechanism, and an upper die seat mounted at the bottom of the assembly seat. A downwardly opening assembly slot is disposed at the center of the bottom of the upper die seat, and a movable die is mounted within the assembly slot. The movable die is provided with limit flanges on both sides, and limit assemblies are mounted on both sides of the assembly slot to cooperate with the limit flanges.

[0007] The limiting assembly includes a rotating shaft, on which a limiting block is mounted, and a limiting groove is provided on the side of the limiting block facing the movable mold, and a first limiting portion and a second limiting portion are provided on both sides of the limiting groove, respectively, and the first limiting portion and the second limiting portion are respectively located above and below the limiting convex edge. One end of the rotating shaft extends from the front of the upper mold base, and the protruding end is equipped with a rotating handle. A locking hole is provided on the side of the rotating shaft, and a locking pin corresponding to the locking hole is mounted on the upper mold base, and the locking pin locks the rotating shaft by extending into the locking hole. The interaction between the limiting convex edges on both sides and the limiting assembly can effectively prevent the movable mold from shifting or falling off during operation, thereby ensuring processing accuracy. At the same time, the rotating limiting assembly can facilitate the disassembly and assembly of the movable mold, making mold replacement and maintenance easier.

[0008] As a preferred embodiment of the present application, the movable mold is provided with a first fixing hole that extends through both the front and rear sides of the movable mold. The upper mold base is provided with a second fixing hole that extends through the assembly slot and is coaxial with the first fixing hole. An axially movable fixing rod is mounted in the second fixing hole. The fixing rod secures the movable mold by assembling with the first and second fixing holes. The design of the fixing rod can further enhance the stability of the movable mold during use and prevent the movable mold from shaking due to assembly errors between the movable mold and the limit assembly.

[0009] As a preferred embodiment of the present application, one end of the fixing rod extends from the front of the upper mold base, and the extended end is equipped with a push-pull handle, so that the operator can control the fixing rod more easily.

[0010] As a preferred embodiment of the present application, the rotating shaft is a torsion spring shaft, which can apply an upward force to the movable mold to firmly press the movable mold into the assembly groove.

[0011] As a preferred embodiment of the present application, an auxiliary inclined surface is provided on the side of the first limiting portion facing the limiting groove, which helps to reduce the resistance that the movable mold may encounter when entering the assembly position, making it easier to accurately position it, thereby improving the disassembly and assembly efficiency.

[0012] Compared with the prior art, the present application has the following beneficial effects: the movable mold can be replaced conveniently and quickly, and the fixation is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the main view of the punch press.

[0014] Figure 2 It is a three-dimensional schematic diagram of the crankshaft mechanism and the upper die base.

[0015] Figure 3 This is a partial bottom view of the upper die base.

[0016] Figure 4 for Figure 3 Cross-sectional view at AA in the middle.

[0017] Figure 5 for Figure 3 Cross-sectional view at the middle BB.

[0018] Figure 6 This is the structural explosion diagram of the limit assembly and the movable mold.

[0019] Figure 7 A cross-sectional view of the limit assembly.

[0020] The following is a description of the symbols in the drawings of the specification:

[0021] 100, frame; 110, crankshaft mechanism; 120, assembly seat;

[0022] 200, upper die base; 210, assembly groove; 220, movable die; 221, limiting convex edge; 222, first fixing hole; 230, locking pin; 240, fixing rod; 241, push-pull handle;

[0023] 300, limit assembly; 310, rotating shaft; 311, rotating handle; 312, locking hole; 320, limit block; 321, limit groove; 322, first limit portion; 323, second limit portion; 324, auxiliary inclined surface. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0025] In the following embodiments, the same or similar numbers throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and therefore cannot be understood as limiting the present invention. In addition, the terms: first, second, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Reference Figures 1 to 7 A crankshaft punch press includes a frame 100, a crank mechanism 110 mounted on the frame 100, an assembly base 120 disposed at the bottom of the crank mechanism 110, and an upper die base 200 mounted at the bottom of the assembly base 120. A downwardly opening assembly slot 210 is disposed at the center of the bottom of the upper die base 200, and a movable die 220 is mounted within the assembly slot 210. Limiting ribs 221 are disposed on the left and right sides of the movable die 220, and limiting assemblies 300 are mounted on the left and right sides of the assembly slot 210 to cooperate with the limiting ribs 221.

[0028] The limiting assembly 300 includes a rotating shaft 310, on which a limiting block 320 is mounted. A limiting slot 321 is provided on the side of the limiting block 320 facing the movable mold 220. A first limiting portion 322 and a second limiting portion 323 are positioned on either side of the limiting slot 321, respectively located above and below the limiting flange 221. The interaction between the limiting flanges 221 and the limiting assembly 300 effectively prevents the movable mold 220 from shifting or falling off during operation, ensuring machining accuracy. Rotating the limiting assembly 300 also facilitates assembly and disassembly of the movable mold 220, facilitating mold replacement and maintenance.

[0029] To further enhance the convenience and safety of installing the movable mold 220, one end of the rotating shaft 310 extends from the front of the upper mold base 200. This end is equipped with a rotating handle 311. A locking hole 312 is provided on the side of the rotating shaft 310. The upper mold base 200 is equipped with a locking pin 230 corresponding to the locking hole 312. The locking pin 230 extends into the locking hole 312 to lock the rotating shaft 310. Once the stop assembly 300 is adjusted to the appropriate position, the operator can insert the locking pin 230 into the locking hole 312 to secure the position of the rotating shaft 310, preventing it from accidentally moving during operation and ensuring the stability of the movable mold 220 throughout the entire stamping process.

[0030] To prevent the limit assembly 300 from becoming loose due to frequent force during the stamping process or the movable mold 220 from shaking due to assembly errors, a first fixing hole 222 is provided on the movable mold 220. The first fixing hole 222 passes through the front and rear sides of the movable mold 220. The upper mold base 200 is provided with a second fixing hole that passes through the assembly groove 210 and is coaxially arranged with the first fixing hole 222. An axially movable fixing rod 240 is installed in the second fixing hole. The fixing rod 240 fixes the movable mold 220 by assembling with the first fixing hole 222 and the second fixing hole. The design of the fixing rod 240 can further enhance the stability of the movable mold 220 during use. One end of the fixing rod 240 extends from the front of the upper mold base 200, and the extended end is equipped with a push-pull handle 241, making it easier for the operator to control the fixing rod 240.

[0031] Furthermore, the rotating shaft 310 is a torsion spring shaft, enabling the limiting assembly 300 to exert an upward force on the movable mold 220 to firmly press the movable mold 220 into the assembly slot 210, thereby enhancing the stability of the movable mold 220. The first limiting portion 322 is provided with an auxiliary inclined surface 324 on the side facing the limiting slot 321, which helps reduce the resistance that the movable mold 220 may encounter when entering the assembly position, making it easier to accurately position the movable mold 220, thereby improving assembly and disassembly efficiency.

[0032] In addition, considering the wear problem that may be caused by long-term use, the inner walls of the first fixing hole 222 and the second fixing hole are hardened or made of a bushing made of wear-resistant material. This not only reduces the friction loss between the fixing rod 240 and the hole and extends the service life, but also ensures a good fit between the fixing rod 240 and the hole, avoiding the impact of the increase in the gap on the reliability of the fixation.

[0033] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention is based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field fall within the protection scope of the present invention.

Claims

1. A crankshaft punching machine, comprising a frame (100), a crankshaft mechanism (110) being mounted on the frame (100), an assembly seat (120) being provided at the bottom of the crankshaft mechanism (110), an upper die seat (200) being mounted at the bottom of the assembly seat (120), characterized in that: A downwardly opening assembly groove (210) is provided at the bottom center of the upper mold base (200), and a movable mold (220) is assembled in the assembly groove (210); limiting convex edges (221) are provided on the left and right sides of the movable mold (220), and limiting components (300) that cooperate with the limiting convex edges (221) are assembled on the left and right sides of the assembly groove (210); The limiting assembly (300) comprises a rotating shaft (310), a limiting block (320) is assembled on the rotating shaft (310), a limiting groove (321) is provided on a side of the limiting block (320) facing the movable mold (220), a first limiting portion (322) and a second limiting portion (323) are provided on both sides of the limiting groove (321), and the first limiting portion (322) and the second limiting portion (323) are respectively located above and below the limiting convex edge (221); One end of the rotating shaft (310) extends from the front of the upper die base (200), and the extended end is equipped with a rotating handle (311); a locking hole (312) is provided on the side of the rotating shaft (310), and a locking pin (230) corresponding to the locking hole (312) is equipped on the upper die base (200), and the locking pin (230) locks the rotating shaft (310) by extending into the locking hole (312).

2. A crankshaft punching machine according to claim 1, characterized in that: The movable mold (220) is provided with a first fixing hole (222), the first fixing hole (222) passes through the front and rear sides of the movable mold (220), the upper mold base (200) is provided with a second fixing hole that passes through the assembly groove (210) and is coaxially arranged with the first fixing hole (222), and the second fixing hole is equipped with an axially movable fixing rod (240), and the fixing rod (240) fixes the movable mold (220) by assembling with the first fixing hole (222) and the second fixing hole.

3. A crankshaft punching machine according to claim 2, characterized in that: One end of the fixing rod (240) extends from the front of the upper die base (200), and the extended end is equipped with a push-pull handle (241).

4. A crankshaft punching machine according to claim 1, characterized in that: The rotating shaft (310) is a torsion spring shaft.

5. The crankshaft punching machine according to claim 1, characterized in that: An auxiliary inclined surface (324) is provided on one side of the first limiting portion (322) facing the limiting groove (321).

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