Core ejecting device of precision mold

Abstract

The utility model discloses a core ejection device of a precision mold, which comprises a lower mold base and an upper mold pressing plate, the upper mold pressing plate is arranged above the lower mold base, a mold core accommodating groove is designed at the top of the lower mold base, a replaceable mold core is slidably mounted in the mold core accommodating groove, and the replaceable mold core is arranged in the mold core accommodating groove. A plurality of precise driving cavities are formed in the side, close to the mold core containing groove, of the interior of the lower mold base, a rotary driving disc is installed in each precise driving cavity, a downward pressing arm and a lifting arm are arranged on the outer edge of each rotary driving disc, and each downward pressing arm is located on one side of the corresponding lifting arm and connected with the inner wall of the corresponding precise driving cavity through a reset spring. According to the core ejecting device of the precision mold, the lower pressing arm on the lower mold base is in contact with the upper mold pressing plate in the mold closing process, so that the lower pressing arm is pressed to rotate. In the process, through accurate transmission of the lifting arm, the linkage seat and the transmission rod, stable movement of the jacking rod in the horizontal direction is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of a mold core push-opening device, in particular to a core push-opening device for a precision mold. Background Art

[0002] Mold processing, as an indispensable part of modern manufacturing, covers the precision processing of molding and blanking tools. Among them, specific types of molds such as shearing dies and die-cutting dies play an important role in the material cutting and molding process. However, in the field of traditional mold processing, especially when it comes to the separation and tightening of the front / rear mold core, there is a relatively primitive and inefficient method.

[0003] This method mainly relies on the horizontal slide grooves designed on both sides of the mold. The front / rear mold cores are usually designed as long strips and fixed in the slide grooves at both ends of the mold. When the mold core needs to be separated, the operator needs to use a tool to pry the mold core open and then push it open manually. Conversely, when the mold core needs to be tightened, the mold core needs to be manually pulled to make it fit tightly and ensure its position is fixed manually.

[0004] Current problems in mold processing:

[0005] 1. Low efficiency: When there are many core strips in the mold, the manual separation and tightening process will become extremely cumbersome, greatly wasting working hours and resulting in low overall production efficiency.

[0006] 2. Risk of mold damage: When using tools to pry or manually pulling out the mold core, the mold cavity and cutting edge may be damaged due to improper operation, which not only increases the maintenance cost of the mold, but may also affect product quality.

[0007] 3. High operation dependence: The entire operation process is highly dependent on the skills and experience of the operator. Manual operation is not only inefficient, but also prone to operational errors due to human factors, which in turn affects production progress and product quality.

[0008] Therefore, in order to solve the above problems, a core-pushing device for a precision mold is proposed. Utility Model Content

[0009] The utility model aims to provide a core ejector device for a precision mold to solve the problems raised in the above background technology.

[0010] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a core-pushing device for a precision mold, comprising a lower mold base, an upper mold pressure plate being arranged above the lower mold base, a core-accommodating groove being designed at the top of the lower mold base, a replaceable core being slidably installed in the core-accommodating groove, a plurality of precision drive cavities being arranged on one side of the lower mold base close to the core-accommodating groove, a rotating drive disk being installed in each precision drive cavity, a lower pressure arm and a lifting arm being respectively arranged on the outer edge of the rotating drive disk, the lower pressure arm being located on one side of the lifting arm and being connected to the inner wall of the precision drive cavity through a reset spring.

[0011] The other end of the lifting arm is connected to the transmission rod through a linkage seat, and the transmission rod is connected to the piston driver. The piston driver is located in the piston cylinder and can reciprocate therein. The other end of the piston driver is connected to the lifting rod, and the lifting rod passes through the precision drive cavity and extends into the mold core accommodating groove and is fixedly connected to one side of the replaceable mold core.

[0012] A groove is provided on the top of the lower mold base near the outer side of the lower pressing arm.

[0013] The pressing arm and the lifting arm are designed to form a "V" shaped angle.

[0014] The piston driver performs piston-like motion inside the piston cylinder.

[0015] The lifting rod passes through the precision driving cavity and extends into the mold core accommodating groove.

[0016] The top of the upper mold pressing plate is connected to an external power driving device.

[0017] There are eight precision drive cavities in total, which are divided into two groups and symmetrically distributed inside the lower mold base.

[0018] One end of the pressing arm and the lifting arm are both designed to be arc-shaped.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The core-lifting device of this precision mold utilizes the contact between the lower pressure arm on the lower mold base and the upper mold pressure plate during the mold closing process to realize the pressure rotation of the lower pressure arm. In this process, the lifting arm, the linkage seat and the transmission rod are precisely driven to achieve stable movement of the lifting rod in the horizontal direction.

[0021] After the mold is processed, the lower pressure arm can be quickly reset under the rebound force of the reset spring, driving the lifting rod to move in the opposite direction, thereby realizing the automatic opening of the mold core. This automated process not only greatly improves the production efficiency of the mold, but also does not require manual operation or the use of any tools, effectively avoiding mold damage that may be caused by human factors, and ensuring the accuracy and stability of mold processing.

[0022] In addition, the utility model also supports the function of automatically opening multiple sets of mold cores at the same time, making the workpiece removal process more convenient and efficient. Whether it is large-scale production or high-precision processing, the utility model can meet the needs of modern manufacturing industry for high-efficiency and high-precision molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the front view of the utility model;

[0024] Figure 2 This is the front view of the lower mold base of the utility model;

[0025] Figure 3 This is the front view of the top opening device of the utility model;

[0026] Figure 4 It is a partial cross-sectional view of the lower mold base of the utility model;

[0027] Figure 5 It is a schematic diagram of the internal structure of the piston cylinder of the utility model.

[0028] In the figure: 1. lower mold base; 2. upper mold pressure plate; 3. mold core accommodating groove; 4. replaceable mold core; 5. precision drive chamber; 6. rotating drive disk; 7. lower pressure arm; 8. lifting arm; 9. return spring; 10. linkage seat; 11. transmission rod; 12. piston driver; 13. piston cylinder; 14. lifting rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-5The utility model provides a technical solution: a core-pushing device for a precision mold, comprising a lower mold base 1, on which an upper mold pressing plate 2 is arranged, a core-accommodating groove 3 is designed on the top of the lower mold base 1, a replaceable core 4 is slidably installed in the core-accommodating groove 3, and a plurality of precision driving cavities 5 are arranged on one side of the lower mold base 1 close to the core-accommodating groove 3, each precision driving cavity 5 is installed with a rotating driving disk 6, and a lower pressing arm 7 and a lifting arm 8 are respectively arranged on the outer edge of the rotating driving disk 6, the lower pressing arm 7 is located on one side of the lifting arm 8, and is connected to the inner wall of the precision driving cavity 5 through a reset spring 9.

[0031] The other end of the lifting arm 8 is connected to the transmission rod 11 through the linkage seat 10, and the transmission rod 11 is connected to the piston driver 12. The piston driver 12 is located in the piston cylinder 13 and can reciprocate therein. The other end of the piston driver 12 is connected to the lifting rod 14, which passes through the precision drive cavity 5 and extends into the mold core accommodating groove 3, and is fixedly connected to one side of the replaceable mold core 4.

[0032] A protective groove is provided on the top of the lower mold base 1 at the outer side of the lower pressing arm 7 to avoid accidental contact during operation.

[0033] A "V"-shaped structure design is adopted between the pressing arm 7 and the lifting arm 8 to optimize the spatial layout and mechanical transmission efficiency.

[0034] The piston driver 12 performs precise piston-like motion in the piston cylinder 13 to ensure stable lifting and lowering of the lifting rod 14.

[0035] The lifting rod 14 passes through the precision driving cavity 5 and extends into the mold core accommodating groove 3, directly acting on the replaceable mold core 4 to ensure the accuracy of the lifting action.

[0036] The top of the upper mold platen 2 is connected to an external power drive device to provide a stable power source for the entire system.

[0037] There are eight precision drive cavities 5 in total, which are divided into two groups and symmetrically distributed inside the lower mold base 1 to achieve multi-point balanced driving.

[0038] One end of the pressing arm 7 and the lifting arm 8 are both designed to be arc-shaped to reduce friction and increase service life.

[0039] Working principle: When using the automatic core lifting system of high-precision molds, the upper mold platen 2 is precisely lifted and lowered by an external power drive device. When the upper mold platen 2 begins to descend and contacts the lower pressing arm 7 on the lower mold base 1, the lower pressing arm 7 is subjected to pressure, causing the return spring 9 connected thereto to be stretched. At this time, the rotary drive disk 6 begins to rotate, driving one end of the lower pressing arm 7 to perform circular motion.

[0040] As the rotary drive disk 6 continues to rotate, the lifting arm 8 thereon also performs circular motion synchronously. Through the rotational connection between the lifting arm 8 and the linkage seat 10, and the connection between the linkage seat 10 and the transmission rod 11, the transmission rod 11 further drives the piston driver 12 to perform piston-like movement inside the piston cylinder 13. This movement is converted into horizontal movement of the lifting rod 14 on the piston driver 12, thereby pushing the replaceable mold core 4 located in the mold core receiving groove 3 to move.

[0041] Driven by the lifting rod 14, the two replaceable mold cores 4 gradually approach and finally dock together, completing the mold closing process. When the mold completes processing of the workpiece, the upper mold pressing plate 2 moves upward, and the contact pressure with the lower pressing arm 7 gradually decreases. At this time, the reset spring 9 begins to shrink under the action of the rebound force, driving the lower pressing arm 7 to reset. During the reset process, the lower pressing arm 7 drives the lifting rod 14 to move horizontally again by rotating the rotating drive disk 6. The movement of the lifting rod 14 separates the two replaceable mold cores 4, making it easier for the operator to take out the processed workpiece.

[0042] During the whole process, the rotating drive plate 6, the pressing arm 7, the lifting arm 8, the linkage seat 10, the transmission rod 11, the piston driver 12, the piston cylinder 13 and the lifting rod 14 and other components work together to realize the automatic lifting and closing of the mold core, which greatly improves the use efficiency and processing accuracy of the mold.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A core-pushing device for a precision mold, comprising a lower mold base (1) and an upper mold pressing plate (2), characterized in that: An upper mold pressing plate (2) is arranged above the lower mold base (1); a mold core accommodating groove (3) is designed on the top of the lower mold base (1); a replaceable mold core (4) is slidably installed in the mold core accommodating groove (3); a plurality of precision drive cavities (5) are arranged on one side of the lower mold base (1) close to the mold core accommodating groove (3); a rotating drive disk (6) is installed in each precision drive cavity (5); a lower pressure arm (7) and a lifting arm (8) are respectively arranged on the outer edge of the rotating drive disk (6); the lower pressure arm (7) is located on one side of the lifting arm (8) and is connected to the inner wall of the precision drive cavity (5) through a return spring (9); The other end of the lifting arm (8) is connected to a transmission rod (11) via a linkage seat (10), and the transmission rod (11) is further connected to a piston driver (12). The piston driver (12) is located in a piston cylinder (13) and can perform reciprocating motion therein. The other end of the piston driver (12) is connected to a lifting rod (14), and the lifting rod (14) passes through the precision drive cavity (5) and extends into the mold core receiving groove (3) to be fixedly connected to one side of the replaceable mold core (4).

2. The core-pushing device for a precision mold according to claim 1, characterized in that: A groove is provided on the top of the lower mold base (1) near the outer side of the lower pressing arm (7).

3. The core-pushing device for a precision mold according to claim 1, characterized in that: The pressing arm (7) and the lifting arm (8) are designed to form a "V" shaped angle.

4. The core-pushing device for a precision mold according to claim 1, characterized in that: The piston driver (12) performs piston-like motion inside the piston cylinder (13).

5. The core-pushing device for a precision mold according to claim 1, characterized in that: The lifting rod (14) passes through the precision driving cavity (5) and extends into the mold core accommodating groove (3).

6. The core-pushing device for a precision mold according to claim 1, characterized in that: The top of the upper mold pressing plate (2) is connected to an external power driving device.

7. The core-pushing device for a precision mold according to claim 1, characterized in that: The precision drive cavities (5) are provided with eight in total, which are divided into two groups and symmetrically distributed inside the lower mold base (1).

8. The core-pushing device for a precision mold according to claim 1, characterized in that: One end of the pressing arm (7) and the lifting arm (8) are both designed to be arc-shaped.

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