Machine tool casting mold convenient to demold

Abstract

The utility model discloses a machine tool casting mould convenient to demould, which comprises a mould II, a pressurizing and lubricating mechanism is arranged on the mould II, the pressurizing and lubricating mechanism comprises a plurality of parallel rotating straight pipes, the rotating straight pipes are rotatably arranged in a rotating shaft hole in the mould II, and the rotating shaft hole is provided with a gas-liquid through hole in the direction towards the inner wall of the mould II. A gas-liquid outlet is also formed in one side of the rotating straight pipe in the radial direction; according to the machine tool casting mold convenient to demold, through output transmission of a motor and a transmission mechanism in a pressurization lubricating mechanism, gas-liquid outlets in a plurality of rotating straight pipes are communicated with a plurality of gas-liquid penetrating holes, and when a part from the complete part of the outer wall of each rotating straight pipe to the lacking part of the rotating straight pipe, a narrow slit is generated, so that the mold is convenient to demold; and then high-pressure gas and a separating agent are input into the slits for lubrication and auxiliary separation, a plurality of high-pressure air bags are formed, the adhesion part between the forming supporting plate and the second mold is expanded, and the purpose of rapid demolding of the second mold is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool castings, in particular to a machine tool casting mold which is easy to demould. Background Art

[0002] In the process of manufacturing machine tool castings by metal mold casting process or pressure casting process, molten metal needs to be injected into the corresponding mold and the parts need to be taken out after cooling; however, during the cooling and solidification process of the above-mentioned molten metal, the periphery of the machine tool casting has adhesion, and it is easy to be fixed and adhered to the inner wall of the outer mold, making it difficult to demold.

[0003] At present, in order to prevent machine tool castings and the inner wall of the mold from sticking to each other, before pouring molten metal into the mold, it is usually necessary to evenly apply or spray an isolation agent on the inner wall of the mold to isolate the molten metal from the inner wall of the mold to facilitate later demoulding; however, manual spraying or application of isolation agents will be affected by human factors, and there may be a small part where the isolation agent is not applied or has failed. Therefore, there may still be adhesion between the machine tool casting and the inner wall of the mold, making it difficult to demould. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that machine tool castings and the inner wall of a mold are adhered and difficult to demould, and proposes a machine tool casting mold which is easy to demould.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A machine tool casting mold that is easy to demould, comprising a second mold, on which a pressurized lubrication mechanism is installed;

[0007] The pressurized lubrication mechanism includes a plurality of rotating straight tubes parallel to each other, and the rotating straight tubes are rotatably installed in the shaft hole in the mold 2. The shaft hole is provided with a gas-liquid through hole of a preset length toward the inner wall of the mold 2, and a gas-liquid outlet corresponding to the position of the gas-liquid through hole is also radially provided on one side of the rotating straight tube.

[0008] Preferably, the pressurized lubrication mechanism further includes a transmission mechanism, and the transmission mechanism includes a motor, a plurality of driving gears and a plurality of transmission gears.

[0009] Preferably, a plurality of the driving gears are coaxially fixedly installed on the peripheries of a plurality of the rotating straight tubes, a plurality of the transmission gears are meshed and connected in sequence between the plurality of the driving gears, and the transmission gears are rotationally connected to the mold 2.

[0010] Preferably, the motor is fixedly mounted on the second mold, and the output shaft of the motor is coaxially fixedly connected to one of the transmission gears via a coupling.

[0011] Preferably, the ends of several of the rotating straight tubes are connected to a flow divider via a rotating joint, and the inlet of the flow divider is fixedly connected to a Y-tube.

[0012] Preferably, the Y-tube is composed of a main tube and an inclined tube, and the inclined tube is fixedly connected to the outer side wall of the main tube in an inclined manner.

[0013] Compared with the prior art, the utility model provides a machine tool casting mold that is easy to demould, and has the following beneficial effects:

[0014] 1. The mold 2 in the machine tool casting mold that is easy to demold, through the output transmission of the motor and the transmission mechanism in the pressurized lubrication mechanism, connects the gas-liquid outlets and the gas-liquid perforations in the plurality of rotating straight tubes to each other. When the rotating straight tube has a missing part from the complete part of the outer wall, a narrow gap is generated between the rotating straight tube and the forming support plate. Then, high-pressure gas and a separating agent of preset pressure are input into the plurality of rotating straight tubes through the Y-tube for lubrication and auxiliary separation. The separating agent is mainly concentrated in the contact gap between the forming support plate and the mold 2 to form a sealed space. As the high-pressure gas is continuously filled into the narrow gap, a plurality of high-pressure airbags are formed in the gap. The plurality of high-pressure airbags are used to gradually apply a plurality of mutually separating thrusts to the forming support plate and the mold 2, and to open the part that is adhered between the forming support plate and the mold 2, thereby achieving the purpose of rapid demolding of the mold 2, and is used to represent a static mold or a dynamic mold for traditional vertical opening and closing separation.

[0015] 2. The mold 1 in the machine tool casting mold that is easy to demold is input with an isolation agent three to five times at a preset frequency through a vibration lubrication mechanism and a high-pressure oil pump for lubrication and vertical vibration. The vibration generated by the preset frequency oil delivery separates the adhered part between the mold 1 and the molding pallet. Combined with the impact force generated when the hydraulic cylinder is started, the fixed block and the molding pallet are vibrated in parallel at a certain frequency to completely separate the molding pallet from the inner wall of the mold 1, so that the molding pallet can be smoothly and quickly slid out to achieve the purpose of rapid demolding. It is used to represent a dynamic mold or static mold with a special sliding demolding method. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An exploded view of a machine tool casting mold that is easy to demould proposed by the utility model;

[0017] Figure 2 An exploded view of a mold 2 and a pressurized lubrication mechanism in a machine tool casting mold that is easy to demould proposed by the utility model;

[0018] Figure 3 It is a cross-sectional view of a mold 2 and a pressurized lubrication mechanism in a machine tool casting mold that is easy to demould proposed by the utility model;

[0019] Figure 4 It is a partial cross-sectional view of a mold 2 in a machine tool casting mold that is easy to demould proposed by the utility model;

[0020] Figure 5 It is a partial cross-sectional view of a mold 2 and a pressurized lubrication mechanism in a machine tool casting mold that is easy to demould proposed by the utility model;

[0021] Figure 6 It is a structural schematic diagram of a support plate in the prior art.

[0022] In the figure: 1. Mold 1; 2. Mold 2; 21. Shaft hole; 22. Shaft hole; 3. Pressurized lubrication mechanism; 31. Rotating straight pipe; 32. Diverter; 33. Rotating joint; 34. Driving gear; 35. Transmission gear; 36. Motor; 37. Main pipe; 38. Oblique pipe; 39. Gas-liquid outlet; 4. Hydraulic cylinder; 41. Base; 42. Fixing block; 5. Vibration lubrication mechanism. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", 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, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Reference Figure 1-6 A machine tool casting mold that is easy to demould comprises a mold 1 and a mold 2. The mold 2 is covered on the mold 1 according to a preset path. After the mold 2 and the mold 1 are sealed and connected, they are used to manufacture a support plate. Specifically, a support plate for a cross slide in a machine tool casting in the prior art is taken as an example. Figure 6 , the size of the pallet gradually increases or remains unchanged from top to bottom. During the production process of the pallet, after the cast and shaped pallet is shaped and cooled, the mold 2 can be directly pulled out along the vertical line of the upper working surface of the pallet, and the mold 2 can be separated from the formed pallet, which is used to represent the static mold or dynamic mold of the traditional vertical opening and closing separation;

[0026] Continue to refer Figure 6 The lower end of the support plate is integrally connected to an inverted triangle guide bar, and demoulding is performed directly along the direction of the guide bar, which is used to represent a dynamic mold or a static mold with a special demoulding method. That is, this application mainly uses the particularity of the support plate to describe two different demoulding process molds.

[0027] In this embodiment, a plurality of mutually parallel rotating shaft holes 21 are provided in the mold 2. The rotating shaft holes 21 are mainly used for rotatingly installing the following rotating straight tube 31 to deliver a mixture of high-pressure gas and a separating agent into the mold cavity. The input high-pressure gas is used to push the mold 2 2 and the internal support plate to separate. The more uniform the spacing of the plurality of rotating shaft holes 21 is set, the more uniform the thrust distribution of the high-pressure gas on the forming support plate in the mold after the later inflation, thereby avoiding deformation of the forming support plate due to uneven force, and the plurality of rotating shaft holes 21 are equidistantly close to the inner wall surface of the mold 2, and the rotating shaft holes 21 are provided with gas-liquid perforations 22 of a preset length in the direction toward the inner wall of the mold 2. Figure 4 The gas-liquid perforation 22 is connected to the closed mold cavity and is mainly used to transport gas and liquid into the mold cavity. The gas-liquid perforation 22 is based on the mechanical strength of the mold 2. The smaller the depth and width, the less molten metal raw material the mold needs to be filled with, and the smoother the outer wall of the mold. That is, the purpose of the shallow depth of the gas-liquid perforation 22 is to reduce the use of molten metal raw materials and to reduce the part of the later polishing process.

[0028] In this embodiment, a pressurized lubrication mechanism 3 is installed in several rotating shaft holes 21 in the mold 2. The pressurized lubrication mechanism 3 includes several rotating straight tubes 31 parallel to each other and a transmission mechanism. The several rotating straight tubes 31 are sealed and fitted in the several rotating shaft holes 21 for rotation. The rotating shaft holes 21 and the rotating straight tubes 31 are coaxially connected, and a gas-liquid outlet 39 corresponding to the position of the gas-liquid through hole 22 is also radially provided on one side of the rotating straight tube 31, and the width of the gas-liquid outlet 39 is not greater than the width of the gas-liquid through hole 22.

[0029] In this embodiment, the transmission mechanism is mainly used to synchronously connect the rotation of several rotating straight tubes 31, and simultaneously connect the gas-liquid outlets 39 in the several rotating straight tubes 31 with the several gas-liquid perforations 22 to transport high-pressure gas and separation agent into the mold cavity. The transmission mechanism includes a motor 36, a plurality of driving gears 34 and a plurality of transmission gears 35. The plurality of driving gears 34 are coaxially fixedly installed on the periphery of the plurality of rotating straight tubes 31, and the plurality of transmission gears 35 are meshed and connected between the plurality of driving gears 34 in sequence. The transmission gears 35 are rotationally connected to the mold 2, and the motor 36 is fixedly installed on the mold 2, and the output shaft of the motor 36 is coaxially fixedly connected with a transmission gear 35 through a coupling. The motor 36 is connected to a battery through a wire, and the battery is fixedly installed on the mold 2.

[0030] In this embodiment, the ends of several rotating straight tubes 31 are connected to the diverter 32 through the rotating joint 33, and the several outlets of the diverter 32 are interconnected with the ends of several rotating straight tubes 31 through the rotating joint, that is, the high-pressure gas and separation agent introduced into the inlet of the diverter 32 can be diverted along the several outlets to the several rotating straight tubes 31, and the inlet of the diverter 32 is fixedly connected with a Y-tube, which is composed of a main tube 37 and an inclined tube 38. The inclined tube 38 is fixedly connected to the outer wall of the main tube 37 in an inclined manner, and the inlet of the main tube 37 is fixedly connected with a compressed gas tank, which is used to supply high-pressure gas of preset pressure. The inlet of the inclined tube 38 is evenly input with the separation agent through an oil pump and a high-pressure oil pipe.

[0031] It should be noted that in the present application, the mold 2 is closed, and before pouring the molten metal, the gas-liquid outlets 39 and the gas-liquid perforations 22 in several rotating straight tubes 31 are staggered, that is, the rotating straight tubes 31 are in a closed state, and before pouring the molten metal, the inner wall surface of the mold 2, the inner wall of the gas-liquid perforations 22 and the outer periphery of the rotating straight tubes 31 are evenly coated with an isolation agent. In particular, it is necessary to ensure that the isolation agent on the outer periphery of the rotating straight tubes 31 is evenly coated to avoid adhesion between the formed support plate and the rotating straight tubes 31, thereby avoiding the situation where the rotating straight tubes 31 cannot rotate in the later stage.

[0032] In the present invention, when the mold 2 is demoulded:

[0033] The output shaft of the motor 36 drives the transmission gear 35 connected in the transmission mechanism to transmit, and drives the plurality of rotating straight tubes 31 to rotate through the plurality of driving gears 34 and the plurality of transmission gears 35 connected in sequence, so that the gas-liquid outlets 39 in the plurality of rotating straight tubes 31 and the plurality of gas-liquid through holes 22 are connected to each other;

[0034] As is known to all, the portion of the rotating straight tube 31 where the gas-liquid outlet 39 is provided has a part of the outer wall missing, so when the portion of the rotating straight tube 31 with a complete outer wall is changed to the missing portion of the rotating straight tube 31, a narrow gap will be generated between the rotating straight tube 31 and the forming support plate;

[0035] Then, high-pressure gas and separating agent of preset pressure are input into several rotating straight tubes 31 through the Y tube. The separating agent is blown by the high-pressure gas and coated on the inner wall of the gas-liquid perforation 22 in the forming support plate and the mold 2 for lubrication and separation. The separating agent is mainly concentrated in the contact gap between the forming support plate and the mold 2 to form a sealed space. Then, as the high-pressure gas is continuously filled into the above-mentioned narrow slit, a plurality of high-pressure airbags are formed in the slit. The plurality of high-pressure airbags are used to gradually apply a plurality of mutually separating thrusts to the forming support plate and the mold 2, thereby achieving the purpose of rapid demolding of the mold 2.

[0036] It should be noted that the mold 1 is also provided with a vibration lubrication mechanism 5 and a corresponding mounting structure similar to the pressurized lubrication mechanism 3. The components of the vibration lubrication mechanism 5 are basically the same as those of the pressurized lubrication mechanism 3. Specifically, except for the absence of the Y-tube, the other components are the same. The difference between the vibration lubrication mechanism 5 and the pressurized lubrication mechanism 3 is:

[0037] 1) There is no Y-tube in the vibration lubrication mechanism 5, and the inlet of the diverter 32 in the vibration lubrication mechanism 5 is directly connected to the separation agent through the high-pressure oil pump and the high-pressure oil pipe;

[0038] 2) According to the shape of the inner wall surface of the mold 1, the positions of several rotating straight tubes 31 and the components connected thereto in the vibration lubrication mechanism 5 change;

[0039] 3), the principle of demoulding of the auxiliary mold 1 by the vibration lubrication mechanism 5 is different from the demoulding principle of the pressurized lubrication mechanism 3. The vibration lubrication mechanism 5 mainly uses a high-pressure oil pump to input the isolation agent three to five times at a preset frequency, one for lubrication, and the other for vibration. The vibration generated by the preset frequency oil delivery can separate the adhesion between the mold 1 and the molding tray, and assist the mold 1 to be demoulded quickly.

[0040] The vibration direction of the vibration lubrication mechanism 5 is perpendicular to the demoulding direction of the forming support plate on the mold 1. The mold 1 is also provided with a hydraulic cylinder 4 which generates the same demoulding direction as the forming support plate on the mold 1. The base 41 in the hydraulic cylinder 4 is fixedly installed on the outer wall of the mold 1. The piston rod in the hydraulic cylinder 4 is slidably and telescopically installed in the mold 1. A fixed block 42 is slidably installed on the inner wall of the mold 1. The moving direction of the fixed block 42 is the same as the demoulding direction of the forming support plate. The fixed block 42 is fixedly connected to the end of the piston rod in the hydraulic cylinder 4. The fixed block 42 and the mold 1 are matched with each other, and the fixed block 42 is also a part of the mold and contacts with the forming support plate.

[0041] The present application mainly starts the hydraulic cylinder 4 three to five times at a preset frequency, and utilizes the impact force generated by the hydraulic cylinder 4 to vibrate the fixed block 42 and the forming pallet, thereby separating the position where the forming pallet and the inner wall of the mold 1 are adhered to each other, and after the forming pallet and the inner wall of the mold 1 are completely separated, the piston rod in the hydraulic cylinder 4 will push the forming pallet out a certain distance, and then cooperate with the vibration separation and lubrication action of the above-mentioned vibration lubrication mechanism 5 to completely separate the forming pallet and the inner wall of the mold 1, so that the forming pallet can be smoothly and quickly slid out, thereby achieving the purpose of rapid demoulding.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A machine tool casting mold that is easy to demould, comprising a mold 2 (2), characterized in that: The second mold (2) is provided with a pressurized lubrication mechanism (3); The pressurized lubrication mechanism (3) comprises a plurality of mutually parallel rotating straight tubes (31), wherein the rotating straight tubes (31) are rotatably mounted in a rotating shaft hole (21) in the second mold (2), wherein the rotating shaft hole (21) is provided with a gas-liquid through hole (22) of a preset length in a direction toward the inner wall of the second mold (2), and a gas-liquid outlet (39) corresponding to the position of the gas-liquid through hole (22) is also provided in a radial direction on one side of the rotating straight tube (31).

2. A machine tool casting mold that is easy to demould according to claim 1, characterized in that: The pressurized lubrication mechanism (3) also includes a transmission mechanism, which includes a motor (36), a plurality of driving gears (34) and a plurality of transmission gears (35).

3. A machine tool casting mold that is easy to demould according to claim 2, characterized in that: A plurality of the driving gears (34) are coaxially fixedly installed on the peripheries of a plurality of the rotating straight tubes (31), a plurality of the transmission gears (35) are meshed and connected in sequence between the plurality of the driving gears (34), and the transmission gears (35) are rotationally connected to the second mold (2).

4. A machine tool casting mold that is easy to demould according to claim 2, characterized in that: The motor (36) is fixedly mounted on the second mold (2), and the output shaft of the motor (36) is coaxially fixedly connected to one of the transmission gears (35) via a coupling.

5. The machine tool casting mold that is easy to demould according to claim 1, characterized in that: The ends of the plurality of rotating straight tubes (31) are connected to a flow divider (32) via a rotating joint (33), and the inlet of the flow divider (32) is fixedly connected to a Y tube.

6. A machine tool casting mold that is easy to demould according to claim 5, characterized in that: The Y-tube is composed of a main tube (37) and an inclined tube (38), and the inclined tube (38) is fixedly connected to the outer wall of the main tube (37) in an inclined manner.

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