Auxiliary device for machine tool casting demolding

Abstract

The utility model discloses an auxiliary device for machine tool casting demoulding, which comprises a spray head shell, a button, a double-ring pressurized spray nozzle and an air pressure driving mechanism, the upper end of the button is arranged at the lower end of the spray head shell, and the double-ring pressurized spray nozzle comprises an outer cylinder, a middle cylinder and an inner cylinder which are sequentially and coaxially mounted from outside to inside; according to the auxiliary device for machine tool casting demolding, by pressing a button and then through a series of transmission of the air pressure driving mechanism, one is used for inflating and pressurizing the spraying oil bottle, the other is used for mixing, conveying and spraying air and a separant in the middle air cylinder, and the third is used for conveying air to the inner ring and the outer ring of the double-ring pressurizing spraying nozzle; when the double-ring pressurized spray nozzle sprays oil mist, inclined airflow sprayed by the inner ring and the outer ring is used for blowing away sprayed mist again and dividing the sprayed mist into finer oil mist particles, and the oil mist spraying range can be wider, finer and more uniform through the inclined sprayed airflow.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool castings, in particular to an auxiliary device for demoulding machine tool castings. Background Art

[0002] In the process of manufacturing machine tool castings by metal mold casting process or pressure casting process, it is necessary to inject molten metal into the corresponding mold and take out the parts after cooling; however, in the process of cooling and solidification 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, and it is not easy to demold; therefore, before pouring molten metal into the mold, the existing machine tool casting usually needs 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, so as to facilitate later demolding.

[0003] At present, the spray bottles used for spraying the isolation agent all use compressed gas to promote the flow of liquid, and form a spray through the resistance of the nozzle and the airflow; however, the nozzle structure of the existing spray oil bottle is simple, and there is only one mist outlet, so the compressed gas is mainly sprayed along the central axis of the mist outlet, the oil mist of the outer circle is sprayed relatively loosely, and the oil mist of the inner circle is relatively concentrated, that is, the oil mist sprayed by the existing spray oil bottle is not uniform enough, and it needs to be manually applied with an oil brush later. Utility Model Content

[0004] The utility model aims to solve the problem that the nozzle structure of the spray oil bottle in the prior art is simple, the nozzle has only one mist outlet, and the sprayed oil mist is not uniform, and an auxiliary device for demoulding of machine tool castings is proposed.

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

[0006] An auxiliary device for demoulding a machine tool casting, comprising a spray head housing and a button, wherein the upper end of the button is arranged at the lower end of the spray head housing, and further comprising:

[0007] A double-circle pressurized spray nozzle is installed on one side of the spray head housing, and the double-circle pressurized spray nozzle comprises an outer cylinder, a middle cylinder and an inner cylinder which are coaxially installed in sequence from the outside to the inside, and the annular air pressure channel outlet between the outer cylinder and the middle cylinder and the inner cavity air pressure channel outlet of the inner cylinder are both inclined toward the annular oil mist channel outlet between the middle cylinder and the inner cylinder;

[0008] The air pressure driving mechanism is installed in the spray head shell.

[0009] Preferably, the pneumatic drive mechanism includes three air cylinders arranged in a straight line, the air cylinders are fixedly connected to the spray head housing, and support mesh plates, return springs and pistons are installed in the three air cylinders, and the return spring is extruded and installed between the support mesh plates and the pistons.

[0010] Preferably, the head end of the gas cylinder is connected to a conduit, the ends of the three pistons are connected to round rods through leather sleeves, and a rotating shaft is vertically fixedly connected between the ends of the three round rods, and the rotating shaft is rotatably installed on the lower end of the button.

[0011] Preferably, the double-circle pressurized spray nozzle also includes a cover plate, an air pressure tube 1 is arranged on the central axis of the cover plate, two mutually symmetrical air pressure tubes 2 are arranged on the outer circle of the cover plate, and two mutually symmetrical oil mist tubes are also arranged on the cover plate, one of the conduits and the two oil mist tubes are interconnected, and one of the conduits is interconnected with the air pressure tube 1 through an air flow diverter and the two air pressure tubes 2.

[0012] Preferably, the outer cylinder, the middle cylinder and the inner cylinder are all fixedly mounted on one side of the cover plate, the air pressure pipe 1 and the inner cylinder are interconnected, the annular air pressure channel between the outer cylinder and the middle cylinder is interconnected with the two air pressure pipes 2, and the annular oil mist channel between the middle cylinder and the inner cylinder is interconnected with the two oil mist pipes.

[0013] Preferably, a limiting ring is fixedly installed at the end of the inner cavity of the gas cylinder, the inner diameter of the limiting ring is smaller than the outer diameter of the piston, and a round block is fixedly installed on the front side of the outlet of the inner cylinder.

[0014] Compared with the prior art, the utility model provides an auxiliary device for demoulding machine tool castings, which has the following beneficial effects:

[0015] The auxiliary device for demoulding castings of the machine tool is driven by a series of transmissions of the pneumatic drive mechanism by pressing a button. First, it is used to inflate and pressurize the spray oil bottle to transport the isolation agent in the spray oil bottle to the middle duct; second, it is used to transport and spray the mixed air and isolation agent in the middle air cylinder; third, it is used to transport gas to the inner and outer circles of the double-circle pressurized spray nozzle. The three are carried out simultaneously, so that when the double-circle pressurized spray nozzle sprays oil mist, the inclined airflow sprayed from the inner and outer circles is used to blow the sprayed spray again and divide it into finer oil mist particles. The inclined airflow can make the oil mist spray wider, finer and more uniform, so there is no need to use an oil brush to evenly apply the sprayed isolation agent again later. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an auxiliary device for demoulding machine tool castings proposed by the utility model;

[0017] Figure 2 An exploded view of an auxiliary device for demoulding a machine tool casting proposed by the utility model;

[0018] Figure 3It is a cross-sectional view of an air cylinder in an auxiliary device for demoulding machine tool castings proposed by the utility model;

[0019] Figure 4 This is an exploded view of a double-circle pressurized spray nozzle in an auxiliary device for demoulding machine tool castings proposed by the utility model;

[0020] Figure 5 The utility model discloses a cross-sectional view of a double-circle pressurized spray nozzle in an auxiliary device for demoulding a machine tool casting.

[0021] In the figure: 1. spray head shell; 2. double-circle pressurized spray nozzle; 21. outer cylinder; 22. middle cylinder; 23. inner cylinder; 24. cover plate; 25. air pressure tube 2; 26. oil mist tube; 27. air pressure tube 1; 28. round block; 3. button; 4. air pressure drive mechanism; 41. air cylinder; 42. round rod; 43. rotating shaft; 44. conduit; 45. supporting mesh plate; 46. reset spring; 47. piston; 48. leather cover; 49. limit ring. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] Reference Figure 1-5 , an auxiliary device for demoulding a machine tool casting, comprising a spray head housing 1, the spray head housing 1 specifically adopts the spray bottle cap at the upper end of the existing spray oil bottle in the prior art, such as the industrial spray oil pot with the article number S17114, such as Figure 1 A button 3 is rotatably mounted on the lower right end of the spray head housing 1, and a double-circle pressurized spray nozzle 2 is fixedly mounted on the upper right end surface of the spray head housing 1.

[0025] In this embodiment, the double-circle pressurized spray nozzle 2 includes an outer cylinder 21, a middle cylinder 22 and an inner cylinder 23 which are coaxially installed from the outside to the inside. Figure 4-5 The outlet of the annular air pressure channel between the outer cylinder 21 and the middle cylinder 22 and the outlet of the inner cavity air pressure channel of the inner cylinder 23 are both inclined toward the outlet of the annular oil mist channel between the middle cylinder 22 and the inner cylinder 23. Figure 5The dotted shadow part on the right side of the annular oil mist channel between the middle cylinder 22 and the inner cylinder 23 is used to represent the oil mist in the original spraying shape, the hollow arrow is used to represent the airflow sprayed out of the outlet of the annular air pressure channel between the outer cylinder 21 and the middle cylinder 22, and the black solid arrow is used to represent the airflow sprayed out of the outlet of the inner cavity air pressure channel of the inner cylinder 23, and a round block 28 is fixedly installed on the front side of the outlet of the inner cylinder 23, and a certain gap is left between the round block 28 and the outlet of the inner cylinder 23. The round block 28 and the inner cylinder 23 have the same inner diameter and are coaxially installed to avoid direct gas injection, thereby avoiding the inner circle oil mist being directly blown downward, that is, when the double-circle pressurized spray nozzle 2 sprays oil mist, the inclined airflow sprayed from the inner and outer circles is used to blow the sprayed mist again and divide it into finer oil mist particles, and the inclined airflow can make the oil mist spray wider, finer and more uniform.

[0026] In this embodiment, the double-circle pressurized spray nozzle 2 also includes a cover plate 24, on the central axis of the cover plate 24, an air pressure tube 1 27 is fixedly arranged, on the outer ring of the cover plate 24, two mutually symmetrical air pressure tubes 25 are fixedly arranged, and on the cover plate 24, two mutually symmetrical oil mist tubes 26 are also fixedly arranged. The outer cylinder 21, the middle cylinder 22, and the inner cylinder 23 are all fixedly installed on one side of the cover plate 24. Figure 4-Figure 5 The cover plate 24 is used to fix and connect the outer tube 21, the middle tube 22, and the inner tube 23, and is used to connect the pipeline as follows:

[0027] The air pressure tube 1 27 and the inner tube 23 are interconnected, the annular air pressure channel between the outer tube 21 and the middle tube 22 is interconnected with the two air pressure tubes 25, the head ends of the two air pressure tubes 25 are interconnected through an air flow splitter, and only one air inlet is provided, and then the above-mentioned air flow splitter and the inlet of the air pressure tube 1 27 are connected together through an air flow splitter, so that the two air pressure tubes 25 and the inlet of the air pressure tube 1 27 are connected together, that is, compressed gas is introduced into the second air flow splitter, and can be passed through the two air pressure tubes 25 and the air pressure tube 1 27 to the annular air pressure channel between the outer tube 21 and the middle tube 22 and the inner cavity air pressure channel of the inner tube 23, and the annular oil mist channel between the middle tube 22 and the inner tube 23 is interconnected with the two oil mist tubes 26.

[0028] In this embodiment, a pneumatic drive mechanism 4 is installed in the spray head housing 1, and the pneumatic drive mechanism 4 includes three gas cylinders 41 arranged in a straight line. The three gas cylinders 41 are fixedly connected, and the gas cylinders 41 and the spray head housing 1 are fixedly connected. A supporting mesh plate 45, a return spring 46 and a piston 47 are installed in each of the three gas cylinders 41. The supporting mesh plate 45 is fixedly installed on the left inner wall of the gas cylinder 41, and the supporting mesh plate 45 is provided with holes for passing liquid and air. The piston 47 is sealingly slidably installed in the gas cylinder 41, and is moved along the inner wall of the gas cylinder 41 by the piston 47 to extract and promote the flow of gas or liquid. The return spring 46 is extruded and installed between the supporting mesh plate 45 and the piston 47. A limiting ring 49 is fixedly installed at the end of the inner cavity of the gas cylinder 41. The inner diameter of the limiting ring 49 is smaller than the outer diameter of the piston 47, which is used to prevent the piston 47 from detaching from the gas cylinder 41.

[0029] In this embodiment, the head end of the gas cylinder 41 is fixedly connected with a conduit 44, and the ends of the three pistons 47 are softly connected with a round rod 42 through a leather cover 48. A rotating shaft 43 is vertically fixedly connected between the ends of the three round rods 42. The rotating shaft 43 is rotatably installed on the lower end of the button 3. The button 3 uses the principle of leverage to press and squeeze the piston 47 more effortlessly, so that the piston 47 moves to the left along the inner wall of the gas cylinder 41, pushing the gas or liquid out of the gas cylinder 41. After releasing the button 3, the three squeezed reset springs 46 are used to push the three pistons 47 to reset. Figure 2 A front conduit 44 is interconnected with the air pressure pipe 1 27 through the two air flow splitters and the two air pressure pipes 25, and a middle conduit 44 is interconnected with the two oil mist pipes 26 through an air flow splitter.

[0030] It should be added that the inner cavity at the lower end of the middle conduit 44 is fixedly connected with a spray spring one-way valve 1, and the spray spring one-way valve 1 can only pass the isolation agent in one direction upward. The lower end of the spray spring one-way valve 1 is inserted into the isolation agent in the spray oil bottle. Figure 3 When the return spring 46 pushes the piston 47 to move right, the air pressure in the cylinder 41 decreases, and the guide tube 44 extracts a certain amount of isolation agent and air to mix. When the button 3 is pressed, the piston 47 moves left, and the isolation agent and air in the cylinder 41 are mixed and sprayed out in a mist form;

[0031] A spray spring one-way valve 2 is fixedly connected to the inner cavities at both ends of a conduit 44 at the front. The spray spring one-way valve 2 can only transport gas in one direction upward. When the button 3 is pressed, the gas is transported to the inner and outer circles of the double-circle pressurized spray nozzle 2 through the spray spring one-way valve 2 at the upper end. When the button 3 is reset, the piston 47 moves rightward, and air is extracted through the spray spring one-way valve 2 at the lower end and stored in the gas cylinder 41.

[0032] A spray spring one-way valve 3 is fixedly connected to the inner cavity of the upper and lower ends of a conduit 44 at the rear. The lower end of the conduit 44 is inserted into the upper end of the spray oil bottle to inject gas and compress the air in the spray oil bottle. The two spray spring one-way valves 3 can only transport gas downward in one direction. The piston 47 moves right to extract air and stores it in the air cylinder 41. When pressed, the piston 47 moves left to compress the air pressure in the air cylinder 41 into the spray oil bottle, increasing the pressure in the spray oil bottle, thereby pushing the isolation agent in the spray oil bottle to be transported to the middle conduit 44;

[0033] The spray spring check valve 1, the spray spring check valve 2 and the spray spring check valve 3 all adopt the spray spring valve of model SCV1603CVL.

[0034] In summary, when the button 3 is pressed, the rear air cylinder 41 in the air pressure drive mechanism 4 inflates and pressurizes the spray oil bottle through the piston 47, and the isolation agent in the spray oil bottle is transported to the middle conduit 44. The middle air cylinder 41 transports the mixed air and isolation agent therein to the double-circle pressurized spray nozzle 2 through the piston 47. The front air cylinder 41 transports gas to the inner and outer circles of the double-circle pressurized spray nozzle 2 through the piston 47. Then, in conjunction with the special structure of the double-circle pressurized spray nozzle 2, the annular air pressure channel outlet between the outer cylinder 21 and the middle cylinder 22 is opened. The outlets of the inner cavity air pressure channel of the inner cylinder 23 are inclined toward the outlet of the annular oil mist channel between the middle cylinder 22 and the inner cylinder 23. The round block 28 blocks the outlet of the inner cylinder 23 to prevent direct gas injection, so that when the double-circle pressurized spray nozzle 2 sprays oil mist, the inclined airflows sprayed by the inner and outer circles are used to disperse the sprayed spray again and divide it into finer oil mist particles. The inclined airflow can make the oil mist spray wider, finer and more uniform, so there is no need to manually use an oil brush to evenly apply the sprayed isolation agent again in the later stage.

[0035] 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. An auxiliary device for demoulding a machine tool casting, comprising a spray head housing (1) and a button (3), wherein the upper end of the button (3) is arranged at the lower end of the spray head housing (1), characterized in that: Also includes: A double-circle pressurized spray nozzle (2) is installed on one side of the spray head housing (1), the double-circle pressurized spray nozzle (2) comprising an outer cylinder (21), a middle cylinder (22) and an inner cylinder (23) which are coaxially installed in sequence from the outside to the inside, and the outlet of the annular air pressure channel between the outer cylinder (21) and the middle cylinder (22) and the outlet of the inner cavity air pressure channel of the inner cylinder (23) are both inclined toward the outlet of the annular oil mist channel between the middle cylinder (22) and the inner cylinder (23); The air pressure drive mechanism (4) is installed in the spray head housing (1).

2. The auxiliary device for demoulding a machine tool casting according to claim 1, characterized in that: The pneumatic drive mechanism (4) comprises three air cylinders (41) arranged in a straight line, the air cylinders (41) being fixedly connected to the spray head housing (1), and each of the three air cylinders (41) being provided with a supporting mesh plate (45), a return spring (46) and a piston (47), wherein the return spring (46) is extruded and installed between the supporting mesh plate (45) and the piston (47).

3. The auxiliary device for demoulding a machine tool casting according to claim 2, characterized in that: The head end of the gas cylinder (41) is connected to a conduit (44), the ends of the three pistons (47) are connected to round rods (42) through leather sleeves (48), and a rotating shaft (43) is vertically fixedly connected between the ends of the three round rods (42), and the rotating shaft (43) is rotatably mounted on the lower end of the button (3).

4. The auxiliary device for demoulding a machine tool casting according to claim 3, characterized in that: The double-circle pressurized spray nozzle (2) also includes a cover plate (24), an air pressure tube 1 (27) is arranged on the central axis of the cover plate (24), two mutually symmetrical air pressure tubes 2 (25) are arranged on the outer circle of the cover plate (24), and two mutually symmetrical oil mist tubes (26) are also arranged on the cover plate (24), one of the conduits (44) and the two oil mist tubes (26) are interconnected, and one of the conduits (44) is interconnected with the air pressure tube 1 (27) through an air flow splitter and the two air pressure tubes 2 (25).

5. The auxiliary device for demoulding a machine tool casting according to claim 4, characterized in that: The outer cylinder (21), the middle cylinder (22), and the inner cylinder (23) are all fixedly mounted on one side of the cover plate (24); the air pressure pipe 1 (27) and the inner cylinder (23) are interconnected; the annular air pressure channel between the outer cylinder (21) and the middle cylinder (22) is interconnected with the two air pressure pipes 2 (25); and the annular oil mist channel between the middle cylinder (22) and the inner cylinder (23) is interconnected with the two oil mist pipes (26).

6. The auxiliary device for demoulding a machine tool casting according to claim 3, characterized in that: A limiting ring (49) is fixedly mounted on the inner end of the gas cylinder (41), the inner diameter of the limiting ring (49) being smaller than the outer diameter of the piston (47), and a round block (28) is fixedly mounted on the front side of the outlet of the inner cylinder (23).

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