Mechanical blade mold capable of freely replacing mold core

Abstract

The utility model discloses a mechanical blade mold capable of freely replacing a mold core, and belongs to the technical field of mechanical blade molds. A mechanical blade mold capable of freely replacing a mold core comprises a base frame, a standard mold cavity is formed in the base frame, a locking structure is arranged at the bottom of the standard mold cavity, a mold core body is clamped on the standard mold cavity, the locking structure and the mold core body are clamped and fixed, and an ejection assembly is further arranged at the bottom of the base frame. According to the mechanical blade mold with the mold core capable of being freely replaced, the mold core structure capable of being freely replaced is arranged, so that the adaptability and flexibility of the mold under different production requirements are greatly improved, a user can rapidly replace the mold core body to adapt to different cutting edge forming requirements, and the production efficiency is improved; and the design of the guide surface and the matching between the positioning boss and the clamping block ensure that the mold core body can be automatically centered and firmly fixed, so that the precision and the quality of a product are ensured.

Description

Technical Field

[0001] This utility model relates to the field of mechanical blade mold technology, and more specifically, to a mechanical blade mold with freely replaceable mold cores. Background Technology

[0002] Traditional mechanical cutting tool molds typically employ an integral structure, with the mold core fixedly connected to the base or secured by bolts. When changing the cutting edge shape or repairing worn parts, it is often necessary to disassemble a large number of components, which is not only complex and time-consuming, but also requires a high level of technical expertise from the operators, seriously affecting the continuity and flexible production capacity of the production line.

[0003] Furthermore, existing molds commonly suffer from inaccurate positioning and unreliable locking when changing mold cores or adjusting positions. This leads to issues such as misalignment and loosening during processing, affecting product consistency and processing quality. Additionally, while some molds offer some degree of replaceability, their unlocking and ejection mechanisms have poor linkage, resulting in cumbersome operation procedures and interference, reducing replacement efficiency and increasing maintenance costs. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a mechanical blade mold with freely replaceable mold cores to solve the above-mentioned deficiencies.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] This utility model discloses a mechanical cutting die with freely replaceable cores, comprising a base frame, a standard mold cavity provided within the base frame, a locking structure provided at the bottom of the standard mold cavity, a core body engaged on the standard mold cavity, the locking structure engaging and fixing the core body, and an ejection assembly provided at the bottom of the base frame, the locking structure controlling the ejection assembly to work synchronously.

[0007] Preferably, the upper end of the mold core body is provided with an independently machined cutting edge forming cavity, the lower end of the mold core body is provided with a positioning boss, a guide plate is provided near the four corners of the positioning boss, and the two ends of the positioning boss are symmetrically provided with locking grooves. The two side walls of the locking grooves are inclined to facilitate the locking block of the locking structure to enter the locking groove and fix the mold core body.

[0008] Preferably, both ends of the bottom of the standard mold cavity are provided with guide surfaces, which are inclined. When the two ends of the positioning boss come into contact with the guide surfaces, they are automatically pushed to the center position, which facilitates the locking and fixing of the locking block.

[0009] Preferably, the locking structure includes a locking block and a double eccentric wheel. The locking blocks are symmetrically arranged on both sides of the double eccentric wheel. A slider is fixedly connected to the lower surface of the locking block. Rotating the double eccentric wheel can increase the distance between the two locking blocks. A return spring is provided between the locking blocks. When the double eccentric wheel rotates to the small diameter and contacts the locking block, the return spring pulls the locking blocks closer to each other. An inclined surface is provided on the side of the locking block away from the double eccentric wheel.

[0010] Preferably, the central shaft of the double eccentric wheel is movably connected to the bottom of the standard mold cavity, and a handle is fixedly connected to the lower end of the central shaft of the double eccentric wheel.

[0011] Preferably, the bottom of the standard mold cavity is provided with a sliding groove that matches the slider. The sliding groove restricts the movement direction of the block, so that the block moves in a straight line. The base frame is provided with a limiting groove for the handle to move through. The handle passes through the limiting groove. Moving the handle to the position of the limiting groove can drive the double eccentric wheel to rotate.

[0012] Preferably, the ejector assembly includes a first gear, a second gear, and an ejector rod. The first gear meshes with the second gear, and the first gear is fixedly connected to one end of the handle. When the handle rotates, it synchronously drives the second gear to rotate. A limit strip is provided at the upper end of the ejector rod, and the ejector rod passes through the base frame. The base frame has a movable hole that matches the ejector rod. The limit strip prevents the ejector rod from rotating. A spiral groove is provided at the lower end of the ejector rod, and the position of the ejector rod with the spiral groove is sleeved with the second gear. A connecting hole that sleeves the ejector rod is provided at the center of the second gear, and a limit block that matches the spiral groove is provided in the connecting hole. The limit block rotates with the second gear, pushing the spiral groove to rise or fall.

[0013] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0014] This utility model discloses a mechanical cutting die with a freely replaceable core. By setting a freely replaceable core structure, the adaptability and flexibility of the die under different production needs are greatly improved. Users can quickly change the core body to adapt to different cutting edge forming requirements, reducing downtime and improving production efficiency. The design of the guide surface and the cooperation between the positioning boss and the locking block ensure that the core body can be automatically centered and firmly fixed, thereby ensuring the precision and quality of the product. The position of the locking block is adjusted by rotating the handle to control the double eccentric wheels, realizing the locking and unlocking of the core body. At the same time, the core body is ejected by the ejection component. The whole process is simple and quick, reducing the difficulty of operation. The contact surfaces between the two ends of the limiting groove and the handle are designed with rough surfaces to increase a certain resistance, effectively preventing loosening or misoperation caused by accidental collisions, and improving the stability and safety of the system. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the mechanical blade mold with freely interchangeable mold cores according to the present invention.

[0016] Figure 2 This is a structural diagram of the mold core body of this utility model;

[0017] Figure 3 This is a structural diagram of the base frame of this utility model;

[0018] Figure 4 This is a longitudinal sectional view of the base frame of this utility model;

[0019] Figure 5 This is a cross-sectional view of the base frame of this utility model.

[0020] In the diagram: 1. Base frame; 11. Standard mold cavity; 111. Guide surface; 12. Slide groove; 13. Limiting groove; 2. Locking structure; 21. Locking block; 211. Slider; 212. Return spring; 213. Inclined surface; 22. Double eccentric wheel; 221. Handle; 3. Mold core body; 31. Positioning boss; 311. Guide plate; 312. Engaging groove; 4. Ejection assembly; 41. First gear; 42. Second gear; 421. Limiting block; 43. Ejection rod; 431. Limiting strip; 432. Spiral groove. Detailed Implementation

[0021] 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.

[0022] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0023] Combination Figures 1-5 The present invention provides a mechanical blade mold with freely replaceable mold core, comprising a base frame 1, a standard mold cavity 11 provided inside the base frame 1, a locking structure 2 provided at the bottom of the standard mold cavity 11, a mold core body 3 engaged on the standard mold cavity 11, and the locking structure 2 engaged and fixed with the mold core body 3.

[0024] Specifically, the upper end of the mold core body 3 is provided with an independently machined cutting edge forming cavity, and the lower end of the mold core body 3 is provided with a positioning boss 31. The positioning boss 31 is provided with guide plates 311 near the four corners. The two ends of the positioning boss 31 are symmetrically provided with locking grooves 312. The two side walls of the locking grooves 312 are inclined to facilitate the locking block 21 of the locking structure 2 to enter the locking grooves 312 and fix the mold core body 3.

[0025] Furthermore, guide surfaces 111 are provided at both ends of the bottom of the standard mold cavity 11. The guide surfaces 111 are inclined. When the two ends of the positioning boss 31 come into contact with the guide surfaces 111, they are automatically pushed to the center position, which facilitates the locking and fixing of the locking block 21.

[0026] To fix the positioning boss 31, the locking structure 2 is equipped with a locking block 21 and a double eccentric wheel 22. A slider 211 is fixedly connected to the lower surface of the locking block 21. The bottom of the standard mold cavity 11 is provided with a groove 12 that matches the slider 211. The groove 12 restricts the movement direction of the locking block 21, allowing the locking block 21 to move in a straight line. There are two locking blocks 21, and the two locking blocks 21 are symmetrically arranged about the central axis of the double eccentric wheel 22. Rotating the double eccentric wheel 22 can increase the distance between the two locking blocks 21. At the same time, in order for the locking blocks 21 to be reset, the two... A return spring 212 is provided between each locking block 21. The end of the return spring 212 is fixedly connected to the locking block 21. When the double eccentric wheel 22 rotates to its small diameter and contacts the locking block 21, the return spring 212 pulls the locking blocks 21 closer to each other. A slope 213 is provided on the side of the locking block 21 away from the double eccentric wheel 22. The slope 213 is used for guidance. When the locking block 21 is working, the slope 213 contacts the guide plate 311 first. The slope 213 facilitates the insertion of the locking block 21 between the guide plates 311. As the slope 213 is inserted, it can push the positioning boss 31 to the center.

[0027] As an embodiment of this utility model, the double eccentric wheel 22 is controlled to rotate by the handle 221. The central axis of the double eccentric wheel 22 is movably connected to the bottom of the standard mold cavity 11, and the handle 221 is fixedly connected to the lower end of the central axis of the double eccentric wheel 22. A limiting groove 13 for the handle 221 to move is provided on the base frame 1. The handle 221 passes through the limiting groove 13. Moving the handle 221 to the position of the limiting groove 13 can drive the double eccentric wheel 22 to rotate, change the contact position between the double eccentric wheel 22 and the locking block 21, and prevent the handle 221 from loosening. The contact surfaces between the two ends of the limiting groove 13 and the handle 221 are rough surfaces, which provide a certain resistance to prevent the handle 221 from loosening on its own.

[0028] like Figure 5As shown, to improve the ease of replacing the mold core body 3, an ejector assembly 4 is provided in the standard mold cavity 11. The ejector assembly 4 includes a first gear 41 fixedly connected to one end of the handle 221, a second gear 42 movably connected to the bottom of the base frame 1, and an ejector rod 43 movably connected to the second gear 42. The first gear 41 meshes with the second gear 42. The first gear 41 rotates with the handle 221, driving the second gear 42 to rotate. A limit strip 431 is provided at the upper end of the ejector rod 43. The ejector rod 43 passes through the base frame 1. The base frame 1 has a movable hole that matches the ejector rod 43. A limiting strip 431 prevents the ejector rod 43 from rotating. The lower end of the ejector rod 43 is provided with a spiral groove 432. The position of the ejector rod 43 with the spiral groove 432 is sleeved with the second gear 42. The center of the second gear 42 has a connecting hole that sleeves the ejector rod 43. A limiting block 421 that matches the spiral groove 432 is provided in the connecting hole. The limiting block 421 rotates with the second gear 42, pushing the spiral groove 432 to rise or fall.

[0029] More specifically, the upper end of the spiral groove 432 is connected to a horizontal groove. The horizontal groove is opened around the ejector rod 43. When the limit block 421 moves in the horizontal groove, the ejector rod 43 does not move up or down. This is to ensure that the mold core body 3 unlocks first. After the locking block 21 moves out of the locking groove 312, the ejector rod 43 is controlled to move up to eject the mold core body 3, thus avoiding mutual interference between the ejector rod 43 and the locking block 21.

[0030] Working process: First, align the end of the mold core body 3 with the positioning boss 31 with the standard mold cavity 11 and insert it along the guide surface 111. Rotate the handle 221, and the first gear 41 and the second gear 42 will drive the ejector rod 43 to move down to avoid affecting the installation of the mold core body 3. The double eccentric wheel 22 rotates, causing the two locking blocks 21, which are symmetrically arranged about the central axis of the double eccentric wheel 22, to move outward. The guide plate 311 guides the locking blocks 21 to enter the locking groove 312 along the inclined surface 213, so that the mold core body 3 is automatically centered and fixed, completing the installation of the mold core body 3. When replacing the mold core body 3, rotate the handle 221 in the opposite direction, and the double eccentric wheel 22 rotates to the small diameter position. The return spring 212 pulls the locking blocks 21 closer to each other and they exit from the locking groove 312. The first gear 41 and the second gear 42 mesh, driving the ejector rod 43 to move up. Through the cooperation of the spiral groove 432 and the limiting block 421, the ejector rod 43 rises and pushes out the mold core body 3 for easy removal.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A mechanical cutting die with freely replaceable core, comprising a base frame (1), characterized in that: The base frame (1) is provided with a standard mold cavity (11), and a locking structure (2) is provided at the bottom of the standard mold cavity (11). A mold core body (3) is engaged on the standard mold cavity (11). The locking structure (2) is engaged and fixed with the mold core body (3). An ejection assembly (4) is also provided at the bottom of the base frame (1). The locking structure (2) controls the ejection assembly (4) to work synchronously.

2. The mechanical cutting die with freely interchangeable cores according to claim 1, characterized in that: The upper end of the mold core body (3) is provided with an independently machined cutting edge forming cavity, and the lower end of the mold core body (3) is provided with a positioning boss (31). The positioning boss (31) is provided with a guide plate (311) near the four corners, and the two ends of the positioning boss (31) are symmetrically provided with locking grooves (312).

3. The mechanical cutting die with freely interchangeable cores according to claim 1, characterized in that: Guide surfaces (111) are provided at both ends of the bottom of the standard mold cavity (11).

4. The mechanical cutting die with freely interchangeable cores according to claim 1, characterized in that: The locking structure (2) includes a locking block (21) and a double eccentric wheel (22). The locking blocks (21) are symmetrically arranged on both sides of the double eccentric wheel (22). A slider (211) is fixedly connected to the lower surface of the locking block (21). A return spring (212) is arranged between the locking blocks (21). An inclined surface (213) is provided on the side of the locking block (21) away from the double eccentric wheel (22).

5. The mechanical cutting die with freely interchangeable cores according to claim 4, characterized in that: The central axis of the double eccentric wheel (22) is movably connected to the bottom of the standard mold cavity (11), and a handle (221) is fixedly connected to the lower end of the central axis of the double eccentric wheel (22).

6. The mechanical cutting die with freely interchangeable cores according to claim 5, characterized in that: The bottom of the standard mold cavity (11) is provided with a sliding groove (12) that matches the slider (211), and the base frame (1) is provided with a limiting groove (13) for the handle (221) to move through the limiting groove (13).

7. The mechanical cutting die with freely interchangeable cores according to claim 1, characterized in that: The ejector assembly (4) includes a first gear (41), a second gear (42), and an ejector rod (43). The first gear (41) meshes with the second gear (42). The first gear (41) is fixedly connected to one end of the handle (221). The upper end of the ejector rod (43) is provided with a limit strip (431). The ejector rod (43) passes through the base frame (1). The lower end of the ejector rod (43) is provided with a spiral groove (432). The position of the ejector rod (43) with the spiral groove (432) is sleeved with the second gear (42). The center of the second gear (42) is provided with a connecting hole that sleeves with the ejector rod (43). A limit block (421) matching the spiral groove (432) is provided in the connecting hole.

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