A machine tool precision casting mold facilitating demolding

Abstract

The utility model discloses a machine tool precision casting mould convenient to demould, including base and lower mould base, the top of base is installed with lower mould base, the upper portion of base is provided with the top seat, the bottom of top seat is installed with upper mould base, the outer wall of base is installed with the first hydraulic pressure rod symmetry, the output all of first hydraulic pressure rod is installed with first push arm, and first push arm is connected with top seat, the inside of base is provided with second hydraulic pressure rod, the output of second hydraulic pressure rod is installed with second push arm, the top of second push arm is installed with the top plate, the top of top plate is installed with the equal interval of multiple sets of discharge column, and discharge column extends to the inside of lower mould base and is connected with lower mould base slidingly. The utility model not only has realized automatic opening and closing mould pouring liquid metal to complete casting production to workpiece, has made workpiece and mould separate to workpiece of automatic jacking conveniently, and moreover has improved the convenience of workpiece demoulding.

Description

Technical Field

[0001] This utility model relates to the field of casting mold technology, specifically to a mold for casting precision castings of machine tools that is easy to demold. Background Technology

[0002] Casting molds are key process equipment in casting production. Their core function is to form castings through pre-made cavities (usually composed of sand molds, metal, or other refractory materials). The specific process is as follows: first, a mold in the shape of the part is made using an easily formable material; this mold is placed into a sand mold to form a cavity; then, liquid metal is poured into the cavity; after cooling and solidification, a casting with the same shape as the mold is obtained. Traditionally, after casting, the casting needs to be manually removed from the mold. Manual removal of the casting is time-consuming and prone to injury from the uneven edges of the casting, resulting in low safety. To improve this situation, a mold for precision casting of machine tools that facilitates demolding is proposed.

[0003] As disclosed in the authorization announcement number CN215697928U, a casting mold for easy demolding of machine tool castings includes a load-bearing base, a back plate, and a fixed platform. The back plate is installed on the top of the load-bearing base, and a storage box is fixedly installed on the top of the back plate. An output port is opened on one side of the outer wall of the storage box. A conveying pipe is fixedly connected to the end of the output port away from the storage box. A through hole is opened on the top of the load-bearing base, and fixed platforms are fixedly connected to both sides of the through hole. A support frame is hinged to the inner wall of the fixed platform. A second spring is fixedly installed on the bottom outer wall of the load-bearing base, and a disc base is fixedly installed on the end of the second spring away from the load-bearing base. Although it achieves the rotation of the cylinder driven by the motor, thereby causing the connecting frame to move along the trajectory of the groove on the cylinder, and thereby cooperates with the disc base and the second spring, the casting speed of the parts is increased, and the finished parts are easier for workers to remove. However, this does not solve the problem that existing casting molds are not conducive to the automatic opening and closing of the mold to pour liquid metal into the workpiece for casting production, nor to the automatic lifting of the workpiece to separate it from the mold, thus affecting the convenience of workpiece demolding. Utility Model Content

[0004] The purpose of this utility model is to provide a mold for casting precision castings of machine tools that is easy to demold, so as to solve the problems mentioned in the background art, which are not convenient for automatically opening and closing the mold to pour liquid metal to complete the casting production of the workpiece, and are not conducive to automatically lifting the workpiece to separate the workpiece from the mold, thus affecting the convenience of demolding the workpiece.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mold for casting precision machine tool parts that facilitates demolding, comprising a base and a lower mold base. The lower mold base is installed at the top of the base, a top base is provided above the base, and an upper mold base is installed at the bottom of the top base. First hydraulic rods are symmetrically installed on the outer wall of the base, and each output end of the first hydraulic rod is equipped with a first push arm, which is connected to the top base. A second hydraulic rod is provided inside the base, and a second push arm is installed at the output end of the second hydraulic rod. A top plate is installed at the top of the second push arm, and multiple sets of equally spaced discharge columns are installed at the top of the top plate. The discharge columns extend into the interior of the lower mold base and are slidably connected to the lower mold base. A third hydraulic rod is installed at the top of the lower mold base and is fixedly connected to the lower mold base. A casting port is provided at the top of the top base and is connected to the upper mold base.

[0006] Preferably, a third push arm is installed at the output end of the third hydraulic rod, and a linkage arm is provided at the end of the third push arm away from the third hydraulic rod.

[0007] Preferably, the end of the linkage arm near the third push arm is provided with a hinge shaft, and the third push arm is movably connected to the linkage arm through the hinge shaft.

[0008] Preferably, the end of the linkage arm away from the third push arm is provided with an inner mold, and the end of the inner mold near the linkage arm is provided with a linkage shaft, and the inner mold is movably connected to the linkage arm through the linkage shaft.

[0009] Preferably, a sliding plate is provided on the lower mold base sidewall on one side of the third hydraulic rod, and limit frames are symmetrically provided at the top of the sliding plate, and a servo motor is slidably arranged between the two sets of limit frames.

[0010] Preferably, the output end of the servo motor is equipped with a rotating column, and the surface of the rotating column is provided with external threads.

[0011] Preferably, a threaded sleeve is provided on the surface of the lower mold base on one side of the sliding plate, and the external thread is threadedly connected to the threaded sleeve.

[0012] Preferably, a tapping block is provided at one end of the rotating column near the inner mold, and the tapping block is fixedly connected to the rotating column.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the casting mold not only realizes the automatic opening and closing of the mold and the pouring of liquid metal to complete the casting production of the workpiece, but also facilitates the automatic lifting of the workpiece to separate it from the mold, and improves the convenience of workpiece demolding. (1) The product produced by this mold is a pipe joint. When in use, the upper mold base and the lower mold base are in the closed state. Liquid metal is poured into the closed mold through the casting gate. After cooling and forming, the first hydraulic rod is opened, and the first hydraulic rod drives the first push arm to move upward. The first push arm drives the top seat and the upper mold base to move upward, so that the upper mold base moves away from the lower mold base, thereby opening the mold. Then the servo motor is turned on, and the servo motor drives the rotating column to rotate. The rotating column drives the external thread to rotate. Under the threaded connection between the external thread and the threaded sleeve, the external thread drives the rotating column to move. Under the sliding cooperation between the sliding plate and the limit frame, due to the electric current of the servo motor... The machine shaft rotates while the servo motor remains stationary. Therefore, the servo motor can be driven by the rotating column to move on the surface of the sliding plate. At the same time, the rotating column drives the tapping block to rotate and exit from inside the workpiece. During the exit process, the inner wall of the workpiece is tapped. Then, the third hydraulic rod is opened, which drives the third push arm to retract. The third push arm drives the linkage arm to rotate through the hinge shaft. The linkage arm drives the inner mold to move through the linkage shaft, thereby removing the inner mold from the workpiece and completing the casting production of the pipe joint. This realizes automatic mold opening and closing, casting liquid metal to complete the casting production of the workpiece, and facilitates the tapping of the inner wall of the pipe joint. (2) The second hydraulic rod drives the second push arm to move upward, the second push arm drives the top plate to move upward, and the top plate drives the discharge column to move upward. Under the sliding cooperation between the discharge column and the lower mold base, the discharge column contacts the outer wall of the workpiece and pushes the workpiece out from the lower mold base to complete the demolding of the workpiece. This facilitates the automatic lifting of the workpiece to separate the workpiece from the mold, reduces the need for manual demolding, and improves the convenience of demolding the workpiece. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view cross-sectional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the lower mold base of this utility model; Figure 4 This is a top view of the lower mold base of this utility model. Figure 5 This is a side view sectional structural diagram of the limiting frame of this utility model.

[0015] In the diagram: 1. Base; 2. First hydraulic rod; 3. First push arm; 4. Top seat; 5. Second hydraulic rod; 6. Second push arm; 7. Discharge column; 8. Top plate; 9. Third hydraulic rod; 10. Third push arm; 11. Hinge shaft; 12. Linkage arm; 13. Linkage shaft; 14. Inner mold; 15. Tapping block; 16. Threaded sleeve; 17. External thread; 18. Rotating column; 19. Sliding plate; 20. Servo motor; 21. Limiting frame; 22. Upper mold base; 23. Lower mold base; 24. Casting gate. Detailed Implementation

[0016] 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.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] Example 1 Please see Figure 1-5This utility model provides an embodiment of a precision casting mold for machine tools that facilitates demolding. The mold includes a base 1 and a lower mold base 23. The lower mold base 23 is mounted on the top of the base 1, a top base 4 is positioned above the base 1, and an upper mold base 22 is mounted on the bottom of the top base 4. First hydraulic rods 2 are symmetrically mounted on the outer wall of the base 1, serving as power drives. Each output end of the first hydraulic rod 2 is equipped with a first push arm 3, which is connected to the top base 4. A second hydraulic rod 5 is located inside the base 1. The pressure rod 5 serves as a power drive. The output end of the second hydraulic rod 5 is equipped with a second push arm 6. The top of the second push arm 6 is equipped with a top plate 8. The top of the top plate 8 is equipped with multiple sets of discharge columns 7 at equal intervals. The discharge columns 7 extend into the interior of the lower mold base 23 and are slidably connected to the lower mold base 23. The top of the lower mold base 23 is equipped with a third hydraulic rod 9, which serves as a power drive and is fixedly connected to the lower mold base 23. The top of the top seat 4 is provided with a casting port 24, which is connected to the upper mold base 22. The product manufactured by this mold is a pipe joint. During use, the upper mold base 22 and lower mold base 23 are in the closed state. Liquid metal is poured into the closed mold through the casting port 24. After cooling and solidification, the first hydraulic rod 2 is opened, causing the first push arm 3 to move upwards. The first push arm 3 then moves the top seat 4 and the upper mold base 22 upwards, moving the upper mold base 22 away from the lower mold base 23, thus opening the mold. Then, the servo motor 20 is activated, causing the rotating column 18 to rotate. The rotating column 18 then rotates the external thread 17. With the external thread 17 connected to the threaded sleeve 16, the external thread 17 moves the rotating column 18. Under the sliding engagement of the sliding plate 19 and the limit frame 21, the servo motor... The motor shaft of 20 rotates while the servo motor 20 remains stationary. Therefore, the servo motor 20 can be moved on the surface of the sliding plate 19 by the rotating column 18. At the same time, the rotating column 18 drives the tapping block 15 to rotate and exit from the inside of the workpiece. During the exit process, the inner wall of the workpiece is tapped. Then, the third hydraulic rod 9 is opened, and the third hydraulic rod 9 drives the third push arm 10 to retract. The third push arm 10 drives the linkage arm 12 to rotate through the hinge shaft 11. The linkage arm 12 drives the inner mold 14 to move through the linkage shaft 13, so as to remove the inner mold 14 from the workpiece and complete the casting production of the pipe joint. This realizes the automatic opening and closing of the mold and casting of liquid metal to complete the casting production of the workpiece, which facilitates the tapping of the inner wall of the pipe joint. The output end of the third hydraulic rod 9 is equipped with a third push arm 10, and a linkage arm 12 is provided at the end of the third push arm 10 away from the third hydraulic rod 9. A hinge shaft 11 is provided at one end of the linkage arm 12 near the third push arm 10, and the third push arm 10 is movably connected to the linkage arm 12 through the hinge shaft 11. An inner mold 14 is provided at the end of the linkage arm 12 away from the third push arm 10, and a linkage shaft 13 is provided at the end of the inner mold 14 close to the linkage arm 12. The inner mold 14 is movably connected to the linkage arm 12 through the linkage shaft 13. A sliding plate 19 is provided on the side wall of the lower mold base 23 on one side of the third hydraulic rod 9. A limit frame 21 is symmetrically provided at the top of the sliding plate 19, and a servo motor 20 is slidably provided between the two sets of limit frames 21. The servo motor 20 plays the role of power drive. The output end of the servo motor 20 is equipped with a rotating column 18, and the surface of the rotating column 18 is provided with an external thread 17; A threaded sleeve 16 is provided on the surface of the lower mold base 23 on one side of the sliding plate 19, and the external thread 17 is threadedly connected to the threaded sleeve 16. A tapping block 15 is provided at one end of the rotating column 18 near the inner mold 14, and the tapping block 15 is fixedly connected to the rotating column 18. Open the second hydraulic rod 5, which drives the second push arm 6 to move upward. The second push arm 6 drives the top plate 8 to move upward, and the top plate 8 drives the ejector column 7 to move upward. With the sliding cooperation between the ejector column 7 and the lower mold base 23, the ejector column 7 contacts the outer wall of the workpiece and ejects the workpiece from the lower mold base 23, thus completing the demolding of the workpiece. This facilitates the automatic lifting of the workpiece to separate it from the mold, reduces the need for manual demolding, and improves the convenience of workpiece demolding.

[0020] Work steps The product manufactured by this mold is a pipe fitting. During use, the upper mold base 22 and lower mold base 23 are in the closed state. Liquid metal is poured into the closed mold through the casting port 24. After cooling and solidification, the first hydraulic rod 2 drives the first push arm 3 to move upwards. The first push arm 3 then drives the top seat 4 and the upper mold base 22 to move upwards, moving the upper mold base 22 away from the lower mold base 23, thus opening the mold. The servo motor 20 drives the rotating column 18 to rotate, which in turn drives the external thread 17 to rotate. The external thread 17 then drives the rotating column 18 to move. Because the motor shaft of the servo motor 20 rotates while the servo motor 20 remains stationary, the rotating column 18 can drive the servo motor 20 to move on the surface of the sliding plate 19. Simultaneously, the rotating column 18 drives... The tapping block 15 rotates and exits from the workpiece, tapping the inner wall of the workpiece during the exit process. The third hydraulic rod 9 drives the third push arm 10 to retract, and the third push arm 10 drives the linkage arm 12 to rotate through the hinge shaft 11. The linkage arm 12 drives the inner mold 14 to move through the linkage shaft 13, so as to remove the inner mold 14 from the workpiece and complete the casting production process of the pipe joint. The second hydraulic rod 5 drives the second push arm 6 to move upward, and the second push arm 6 drives the top plate 8 to move upward. The top plate 8 drives the ejector column 7 to move upward. With the sliding cooperation between the ejector column 7 and the lower mold base 23, the ejector column 7 contacts the outer wall of the workpiece and pushes the workpiece out from the lower mold base 23, thus completing the demolding of the workpiece.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold for casting precision machine tool castings that facilitates demolding, comprising a base and a lower mold base, characterized in that: A lower mold base is installed at the top of the base, a top base is provided above the base, and an upper mold base is installed at the bottom of the top base. First hydraulic rods are symmetrically installed on the outer wall of the base. Each output end of the first hydraulic rod is equipped with a first push arm, and the first push arm is connected to the top base. A second hydraulic rod is provided inside the base. A second push arm is installed at the output end of the second hydraulic rod. A top plate is installed at the top of the second push arm. Multiple sets of discharge columns with equal spacing are installed at the top of the top plate. The discharge columns extend into the interior of the lower mold base and are slidably connected to the lower mold base. A third hydraulic rod is installed at the top of the lower mold base and is fixedly connected to the lower mold base. A casting port is provided at the top of the top base and is connected to the upper mold base.

2. The mold for casting precision machine tool castings that facilitates demolding according to claim 1, characterized in that: The output end of the third hydraulic rod is equipped with a third push arm, and the end of the third push arm away from the third hydraulic rod is provided with a linkage arm.

3. The mold for casting precision machine tool castings that facilitates demolding according to claim 2, characterized in that: The linkage arm is provided with a hinge shaft at one end near the third push arm, and the third push arm is movably connected to the linkage arm through the hinge shaft.

4. A mold for casting precision machine tool castings that facilitates demolding, as described in claim 2, characterized in that: An inner mold is provided at the end of the linkage arm away from the third push arm, and a linkage shaft is provided at the end of the inner mold near the linkage arm. The inner mold is movably connected to the linkage arm through the linkage shaft.

5. A mold for casting precision machine tool castings that facilitates demolding, as described in claim 1, characterized in that: A sliding plate is provided on the side wall of the lower mold base on one side of the third hydraulic rod. A limit frame is symmetrically provided at the top of the sliding plate, and a servo motor is slidably arranged between the two sets of limit frames.

6. A mold for casting precision machine tool castings that facilitates demolding, as described in claim 5, characterized in that: The output end of the servo motor is equipped with a rotating column, and the surface of the rotating column is provided with external threads.

7. A mold for casting precision machine tool castings that facilitates demolding, as described in claim 5, characterized in that: A threaded sleeve is provided on the surface of the lower mold base on one side of the sliding plate, and the external thread is threadedly connected to the threaded sleeve.

8. A mold for casting precision machine tool castings that facilitates demolding, as described in claim 6, characterized in that: A tapping block is provided at one end of the rotating column near the inner mold, and the tapping block is fixedly connected to the rotating column.

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