Metal part die-casting device

Abstract

The utility model discloses a metal part die-casting device, which relates to the technical field of die-casting equipment, and comprises a workbench, a driving piece, an upper die, a lower die, a bottom plate, a plurality of pairs of push rods, a plurality of pairs of pull rods and a plurality of pairs of elastic tensioning assemblies, the upper mold is buckled on the lower mold, the driving part is fixedly arranged at the center position of the lower bottom surface of the workbench, the output end of the driving part is connected with a horizontally arranged transverse plate, and a plurality of pairs of second limiting holes are formed in the positions, corresponding to the two lower parts of the lower mold, of the workbench respectively; according to the utility model, the pressing of the upper die and the ejection of the die casting are respectively completed through one driving piece, the whole structure is simple, the repair and the maintenance are convenient, the bottom plate can be always ensured to have downward pulling force through the elastic tensioning assembly, the stability of the bottom plate in the lower die is ensured, and the die casting quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting equipment, in particular to a metal parts die-casting device. Background Art

[0002] The die-casting device generally includes an ejection structure, also known as a demolding structure, which is used to assist in removing the metal parts from the mold after die-casting, thereby improving the demolding efficiency.

[0003] There are two most common forms of existing ejector structures. One is to extend an ejector rod upward from the bottom of the lower mold to eject the formed metal die-casting part; the other is to set a movable bottom plate in the lower mold. The bottom plate serves as the bottom of the mold during die-casting. When demolding, the bottom plate is driven upward by a driving part such as a cylinder to push out the die-casting part.

[0004] However, the prior art has at least the following defects: the ejection structure and the power source required for die casting in the prior art are separate systems, and the two are not combined together. There are many power structures in the entire die casting device, which is complex and inconvenient to repair and maintain. In addition, the bottom plate at the bottom of the lower mold in the prior art lacks a structure to ensure stability, resulting in more burrs on the die-cast metal parts, which is troublesome to deal with later. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides a metal parts die-casting device, which completes the two tasks of pressing the upper mold and ejecting the die-casting part through a driving component. The overall structure is simple and easy to repair and maintain. The elastic tensioning component can always ensure that the bottom plate has a downward pulling force, ensure its stability in the lower mold, and improve the die-casting quality.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A metal parts die-casting device comprises a workbench, a driving member, an upper mold, a lower mold, a base plate, multiple pairs of push rods, multiple pairs of pull rods and multiple pairs of elastic tensioning components, the workbench is supported by supporting legs, the lower mold is fixedly arranged at the center position of the upper surface of the workbench, the upper mold is buckled on the lower mold, the driving member is fixedly arranged at the center position of the lower bottom surface of the workbench, the output end of the driving member is connected with a horizontally arranged cross plate, the workbench is respectively provided with multiple pairs of second limiting holes on both sides corresponding to the lower mold, multiple pairs of pull rods penetrate the second limiting holes and can move vertically, the upper ends of the pull rods are fixedly connected to the side walls of the upper mold, and the lower ends are fixedly connected to the two ends of the cross plate, the base plate is arranged inside the lower mold and matches the internal size of the lower mold, the connecting position of the lower mold and the workbench is provided with multiple pairs of first limiting holes, multiple pairs of push rods penetrate the first limiting holes and can move vertically, the upper ends of the push rods are fixedly connected to the lower bottom surface of the base plate, and the lower ends are connected to the upper surface of the cross plate through the elastic tensioning component.

[0008] Preferably, the elastic tensioning assembly includes a sleeve, a tension spring and a clamping plate, the sleeve is vertically arranged and the lower end is fixedly connected to the cross plate, the lower end of the push rod is inserted into the barrel cavity of the sleeve, the tension spring is arranged in the sleeve and is in a tensioned state, the upper end of the tension spring is connected to the lower end of the push rod, and the lower end is fixedly connected to the bottom of the sleeve, the clamping plate is arranged on the push rod, and the distance between it and the bottom surface of the workbench is greater than the depth inside the lower mold.

[0009] Preferably, two trapezoidal limit strips are provided on the lower bottom surface of the base plate, and the lower mold is provided with trapezoidal limit grooves matching the trapezoidal limit strips at positions corresponding to the trapezoidal limit strips. The base plate is installed in the trapezoidal limit grooves of the lower mold through the trapezoidal limit strips, and the upper end of the push rod is connected to the bottom surface of the trapezoidal limit strips.

[0010] Preferably, an air inlet and an air outlet are respectively provided at the connection position between the lower mold and the workbench, and the air inlet is connected to an external cooling air system.

[0011] Preferably, the driving member is a cylinder.

[0012] The utility model provides a metal parts die-casting device, which has the following beneficial effects:

[0013] 1. The utility model uses a driving member to complete the pressing of the upper mold and the ejection of the die casting. The overall structure is simple and easy to repair and maintain. The elastic tensioning component can always ensure that the bottom plate has a downward pulling force to ensure its stability in the lower mold and improve the die casting quality.

[0014] 2. The elastic tensioning assembly in the utility model adopts a sleeve and a tension spring. The sleeve can limit the push rod in the vertical direction to ensure its stability. The tension spring is arranged in the sleeve, and the upper end is fixedly connected to the lower end of the push rod, and the lower end is fixedly connected to the bottom of the sleeve and is in a stretched state, so that the push rod and the bottom plate are subjected to downward pulling force, thereby ensuring stability in the lower mold;

[0015] 3. In the utility model, an air inlet and an exhaust port are respectively provided at the bottom of the lower mold. The exhaust port can release the pressure between the bottom plate and the lower mold during demolding, making demolding easier. In addition, the air inlet can be connected to an external cold air system. On the one hand, it can further cool the mold during demolding and quickly reduce the temperature to a temperature that the human body can adapt to. On the other hand, it can clean up the impurities that enter the gap between the bottom plate and the lower mold and discharge them from the exhaust port. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front cross-sectional view of a metal parts die-casting device during die-casting of the utility model;

[0017] Figure 2 This is a front cross-sectional view of a metal part die-casting device of the utility model when ejecting;

[0018] Figure 3 It is a top view of the lower mold and workbench of the utility model.

[0019] In the figure: 1. Support leg; 2. Pull rod; 3. Sleeve; 4. Tension spring; 5. Cylinder; 6. Cross plate; 7. Push rod; 8. Clamp plate; 9. Air inlet; 10. Workbench; 11. Trapezoidal limit strip; 12. Upper mold; 13. Bottom plate; 14. Trapezoidal limit groove; 15. Lower mold; 16. First limit hole; 17. Second limit hole; 18. Exhaust port. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figure 1-3As shown, a metal part die-casting device includes a workbench 10, a driving member, an upper mold 12, a lower mold 15, a bottom plate 13, multiple pairs of push rods 7, multiple pairs of pull rods 2 and multiple pairs of elastic tensioning components. The workbench 10 is supported by a supporting leg 1, the lower mold 15 is fixedly arranged at the center position of the upper surface of the workbench 10, the upper mold 12 is buckled on the lower mold 15, the driving member is fixedly arranged at the center position of the lower bottom surface of the workbench 10, the output end of the driving member is connected to a horizontally arranged cross plate 6, the upper and lower molds of the workbench 10 are connected to the upper and lower molds of the workbench 10, and the upper and lower molds of the workbench 10 are connected to the lower and lower molds. The lower mold 15 is provided with multiple pairs of second limiting holes 17 on both sides, multiple pairs of pull rods 2 penetrate the second limiting holes 17 and can move vertically, the upper ends of the pull rods 2 are fixedly connected to the side walls of the upper mold 12, and the lower ends are fixedly connected to the two ends of the cross plate 6, the bottom plate 13 is arranged inside the lower mold 15 and matches the internal size of the lower mold 15, the connection position of the lower mold 15 and the workbench 10 is provided with multiple pairs of first limiting holes 16, multiple pairs of push rods 7 penetrate the first limiting holes 16 and can move vertically, the upper ends of the push rods 7 are connected to the bottom plate 13 The lower bottom surface is fixedly connected, and the lower end is connected to the upper surface of the horizontal plate 6 through an elastic tensioning assembly; the elastic tensioning assembly includes a sleeve 3, a tension spring 4 and a clamping plate 8, the sleeve 3 is vertically arranged and the lower end is fixedly connected to the horizontal plate 6, the lower end of the push rod 7 is inserted into the barrel cavity of the sleeve 3, the tension spring 4 is arranged in the sleeve 3 and is in a tensioned state, the upper end of the tension spring 4 is connected to the lower end of the push rod 7, and the lower end is fixedly connected to the bottom of the sleeve 3, the clamping plate 8 is arranged on the push rod 7, and its distance from the lower bottom surface of the workbench 10 is greater than the lower mold 15 has an internal depth; two trapezoidal limit strips 11 are arranged on the lower bottom surface of the bottom plate 13, and a trapezoidal limit groove 14 matching with the trapezoidal limit strip 11 is opened at the position of the lower mold 15 corresponding to the trapezoidal limit strip 11, and the bottom plate 13 is installed in the trapezoidal limit groove 14 of the lower mold 15 through the trapezoidal limit strip 11, and the upper end of the push rod 7 is connected to the bottom surface of the trapezoidal limit strip 11; the connecting positions of the lower mold 15 and the workbench 10 are respectively provided with an air inlet 9 and an exhaust port 18, and the air inlet 9 is connected to the external cooling air system; the driving part adopts a cylinder 5.

[0022] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process, which are as follows:

[0023] According to the instruction manual Figure 1-3It can be seen that when the utility model is used, the driving member moves the horizontal plate 6 downward, and the horizontal plate 6 moves downward to move the elastic tensioning assembly and the push rod 7 downward, and the push rod 7 moves downward to move the bottom plate 13 downward to fit the bottom of the lower mold 15. The elastic tensioning assembly is in a force storage state, ensuring that the bottom plate 13 has a downward pulling force, ensuring its stability in the lower mold 15, and improving the subsequent die-casting quality. The downward movement of the horizontal plate 6 drives the pull rod 2 and the upper mold 12 connected to the pull rod 2 to move downward, buckle on the lower mold 15, and perform die-casting. After the die casting is completed, the driving member drives the cross plate 6 to move upward, thereby directly driving the pull rod 2 and the upper mold 12 to move upward and separate from the lower mold 15. During the period of time when the cross plate 6 moves upward, since the elastic tensioning component was previously in a state of storing force, it is in the stage of releasing force during this period of time. The push rod 7 and the bottom plate 13 will not move upward temporarily until the force is released. Only then can the push rod 7 and the bottom plate 13 be driven to move upward, thereby ejecting the metal die casting on the bottom plate 13 in the lower mold 15. During this stage of releasing force, the upper mold 12 moves upward all the time, thereby increasing the distance between the upper mold 12 and the bottom plate 13, which is convenient for ejecting the die casting and taking out the parts. Compared with the prior art, the utility model uses a driving member to respectively complete the two tasks of pressing the upper mold 12 and ejecting the die casting, and the overall structure is simple, which is convenient for repair and maintenance.

[0024] In the above process, the first limiting hole 16 limits the push rod 7 in the vertical direction, and the second limiting hole 17 limits the pull rod 2 in the vertical direction.

[0025] Among them, the elastic tensioning assembly includes a sleeve 3, a tension spring 4 and a clamping plate 8. The sleeve 3 is vertically arranged and the lower end is fixedly connected to the cross plate 6. The lower end of the push rod 7 is inserted into the barrel cavity of the sleeve 3, so as to achieve the purpose of vertical limiting. The tension spring 4 is arranged in the sleeve 3 and is in a tensioned state. The upper end of the tension spring 4 is connected to the lower end of the push rod 7, and the lower end is fixedly connected to the bottom of the sleeve 3. The clamping plate 8 is arranged on the push rod 7.

[0026] During operation, when the cross plate 6 moves downward, the tension spring 4 pulls the push rod 7 and the bottom plate 13 downward until the bottom plate 13 fits with the bottom of the lower mold 15. During this process, the tension spring 4 is always in a tensioned state, that is, a force storage state, so that the push rod 7 and the bottom plate 13 are subjected to a downward pulling force, thereby ensuring stability in the lower mold 15. When the cross plate 6 moves upward, the tension spring 4 releases its elastic force first, and the push rod 7 and the bottom plate 13 are temporarily immobile until the upper end of the sleeve 3 abuts against the card plate 8, and pushes the card plate 8 and the push rod 7 upward, thereby driving the bottom plate 13 to move upward to push the metal die casting out of the lower mold 15. The distance between the card plate 8 and the bottom surface of the workbench 10 is greater than the depth inside the lower mold 15, in order to ensure that the top plate can completely withdraw from the lower mold 15.

[0027] Among them, two trapezoidal limiting strips 11 are arranged on the bottom surface of the bottom plate 13, and a matching trapezoidal limiting groove 14 is opened at the position of the lower mold 15 corresponding to the trapezoidal limiting strip 11. The bottom plate 13 is installed in the trapezoidal limiting groove 14 of the lower mold 15 through the trapezoidal limiting strip 11, and the upper end of the push rod 7 is connected to the bottom surface of the trapezoidal limiting strip 11. The process of the bottom plate 13 moving downward greater than the bottom of the lower mold 15 is also the process of the trapezoidal limiting strip 11 inserting into the trapezoidal limiting groove 14. On the one hand, it has a certain guiding and limiting effect on the downward movement of the bottom plate 13, and on the other hand, it also makes the bottom plate 13 and the bottom plate 13 of the lower mold 15 more stable.

[0028] Among them, the connection position of the lower mold 15 and the workbench 10 is respectively provided with an air inlet 9 and an exhaust port 18, and the air inlet 9 is connected to an external cold air system. The exhaust port 18 can release the pressure between the bottom plate 13 and the lower mold 15 during demoulding, making demoulding easier. Although it is a low-probability event, the possibility of it happening again cannot be ruled out. In addition, the air inlet 9 can be connected to an external cold air system. On the one hand, it can further cool down during demoulding and quickly reduce the temperature to a temperature that the human body can adapt to. On the other hand, it can clean up the impurities that enter the gap between the bottom plate 13 and the lower mold 15 and discharge them from the exhaust port 18.

[0029] The driving member in the utility model can be a cylinder 5, which can provide sufficient pressure during die casting to ensure the die casting quality, and also has sufficient thrust when the bottom plate 13 is ejected.

[0030] 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 metal parts die-casting device, characterized in that: The invention comprises a workbench (10), a driving member, an upper mold (12), a lower mold (15), a bottom plate (13), a plurality of pairs of push rods (7), a plurality of pairs of pull rods (2) and a plurality of pairs of elastic tensioning components. The workbench (10) is supported by a supporting leg (1). The lower mold (15) is fixedly arranged at the center position of the upper surface of the workbench (10). The upper mold (12) is buckled on the lower mold (15). The driving member is fixedly arranged at the center position of the lower bottom surface of the workbench (10). The output end of the driving member is connected to a horizontally arranged cross plate (6). The workbench (10) is provided with a plurality of pairs of second limit holes (16) on both sides corresponding to the lower mold (15). 7), multiple pairs of pull rods (2) pass through the second limiting holes (17) and can move vertically, the upper ends of the pull rods (2) are fixedly connected to the side walls of the upper mold (12), and the lower ends are fixedly connected to the two ends of the cross plate (6), the bottom plate (13) is arranged inside the lower mold (15) and matches the internal dimensions of the lower mold (15), and multiple pairs of first limiting holes (16) are provided at the connection position between the lower mold (15) and the workbench (10), multiple pairs of push rods (7) pass through the first limiting holes (16) and can move vertically, the upper ends of the push rods (7) are fixedly connected to the lower bottom surface of the bottom plate (13), and the lower ends are connected to the upper surface of the cross plate (6) through an elastic tensioning component.

2. A metal parts die-casting device according to claim 1, characterized in that: The elastic tensioning assembly comprises a sleeve (3), a tension spring (4) and a clamping plate (8); the sleeve (3) is vertically arranged and the lower end is fixedly connected to the cross plate (6); the lower end of the push rod (7) is inserted into the barrel cavity of the sleeve (3); the tension spring (4) is arranged in the sleeve (3) and is in a tensioned state; the upper end of the tension spring (4) is connected to the lower end of the push rod (7), and the lower end is fixedly connected to the bottom of the sleeve (3); the clamping plate (8) is arranged on the push rod (7), and the distance between the clamping plate (8) and the lower bottom surface of the workbench (10) is greater than the depth inside the lower mold (15).

3. A metal parts die-casting device according to claim 1, characterized in that: The bottom surface of the bottom plate (13) is provided with two trapezoidal limit strips (11), and the lower mold (15) is provided with a trapezoidal limit groove (14) matching the trapezoidal limit strips (11). The bottom plate (13) is installed in the trapezoidal limit groove (14) of the lower mold (15) through the trapezoidal limit strips (11), and the upper end of the push rod (7) is connected to the bottom surface of the trapezoidal limit strip (11).

4. A metal parts die-casting device according to claim 1, characterized in that: An air inlet (9) and an air outlet (18) are respectively provided at the connection position between the lower mold (15) and the workbench (10), and the air inlet (9) is connected to an external cold air system.

5. A metal parts die-casting device according to claim 1, characterized in that: The driving member is a cylinder (5).

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