Water cooling mold for welding ring

Abstract

The invention discloses a water cooling mold for a welding ring, and relates to the technical field of welding ring casting molds. The casting device comprises a base, a support is welded to the top of the base, a water cooling mold is rotationally installed in the support, multiple sets of telescopic drivers are installed at the top of the water cooling mold, and multiple sets of casting molds which are connected in a sleeved mode are fixedly installed at the bottoms of the telescopic ends of the telescopic drivers; and a cooling cavity is formed in the water cooling mold. The design that the multiple sets of casting molds are connected in a sleeved mode is adopted, the casting mold on the inner side is controlled to descend, so that the flow guide holes in the inner side communicate with the casting communicating holes, at the moment, the flow guide holes in the inner side play a guiding role, casting liquid can be guided into the welding ring casting cavity, and then the welding ring casting mold can be suitable for casting welding rings of different specifications; and moreover, the position of the casting hole is fixed, the casting efficiency is high, and the requirement of automatic casting of the intelligent casting island can be met.

Description

Technical Field

[0001] The invention relates to the technical field of welding ring casting molds, and in particular to a water-cooling mold for welding rings. Background Art

[0002] In modern manufacturing, casting technology is widely used in many fields, such as automobiles, pipelines, mechanical engineering, and petrochemicals. Among them, welding rings, as an important metal product, are often used for sealing, connecting, and supporting structural parts. They are widely used in fields requiring high precision, such as welded structures, sealing devices, and pressure vessels.

[0003] A Chinese patent (publication number: CN111822674B) discloses a device for forming a cast pipe weld ring. The device comprises: a forming ring, which is arranged to surround the outer circumference of a cast iron pipe and form a pouring cavity with the outer wall of the cast iron pipe; a pouring port and an exhaust port, both connected to the pouring cavity, are formed on the top of the forming ring; a partition is fixed to the inner wall of the forming ring to separate the pouring port and the exhaust port; a pouring nozzle, located above the pouring port, is used to pour molten iron into the pouring port; and a heating coil is located outside the forming ring to preheat the forming ring. This patent and existing weld ring casting molds are only suitable for casting weld rings of one specification. Casting weld rings of different specifications requires manual replacement of different casting molds, which is inefficient. With the development of industrial automation and intelligent technology, intelligent casting islands are used in various castings. Existing weld ring molds cannot meet the requirements of automated casting on intelligent casting islands. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems and provide a water-cooled mold for welding rings.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: A water-cooled mold for welding rings, comprising a base, a bracket welded to the top of the base, a water-cooled mold rotatably mounted inside the bracket, multiple sets of telescopic drives mounted on the top of the water-cooled mold, and multiple sets of mutually sleeved casting molds fixedly mounted on the bottom of the telescopic ends of the telescopic drives; A cooling cavity is provided inside the water-cooling mold, cooling nozzles are provided at both ends of the cooling cavity, a casting inner core is provided in the middle of the cooling cavity, a casting hole and an air source hole are provided inside the casting inner core, and an outlet of the air source hole is located below the outlet of the casting hole; An upper semi-ring casting cavity is provided at the bottom of the casting mold, a lower mold cover is fixedly installed at the bottom of the casting mold, a lower semi-ring casting cavity is provided on the top of the lower mold cover, and guide holes are provided through the interiors of multiple groups of inner casting molds, and casting connecting holes are provided inside the upper semi-ring casting cavity and the lower semi-ring casting cavity.

[0006] Furthermore, the lower mold cover is threadedly connected to the bottom of the casting mold.

[0007] Furthermore, a cooling ring groove is provided at the bottom of the lower mold cover.

[0008] Furthermore, a driving slot is provided on the inner wall of the cooling ring groove.

[0009] Furthermore, three groups of top columns are fixedly installed on the top of the water-cooling mold, the maximum spacing between adjacent top columns is greater than the diameter of the largest casting mold, and a top plate is fixedly installed on the top of the three groups of top columns, and the telescopic drive is fixedly installed on the top plate.

[0010] Furthermore, the inlet of the casting hole is designed to be funnel-shaped, and the outlet of the casting hole is designed to be arc-shaped.

[0011] Furthermore, the cooling pipe mouth is connected to the external cold water circulation system through a metal bellows, the air source hole is connected to the external air source through a metal bellows, and a one-way nozzle is fixedly installed at the outlet of the air source hole.

[0012] Furthermore, the inner top of the cooling cavity is designed to be inclined upward.

[0013] Furthermore, a casting liquid collecting hopper is fixedly installed on the top of the base, and the casting liquid collecting hopper is located directly below the casting hole.

[0014] Furthermore, a motor is fixedly installed on the top of the base, a driving sprocket is fixedly installed on the output end of the motor, a flip sprocket is fixedly installed on the outside of the rotation center of the water-cooling mold, and the flip sprocket is connected to the driving sprocket through a chain.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention adopts a design of multiple sets of mutually nested casting molds. By controlling the lowering of the inner casting mold, the inner guide hole is connected to the casting connecting hole. At this time, the inner guide hole plays a guiding role, which can guide the casting liquid into the welding ring casting cavity, and is suitable for casting welding rings of different specifications. It only needs to control the misalignment of the casting mold, and there is no need to disassemble the mold. The position of the casting hole is fixed, the casting efficiency is high, and it can meet the requirements of automated casting on the intelligent casting island.

[0016] 2. The present invention can separate the casting hole from the welding ring casting cavity by misaligning the inner guide hole and the casting connecting hole. Then, by flipping the mold so that the casting hole faces downward, the excess casting liquid can be recovered, thereby greatly reducing the excess part generated during the welding ring casting, simplifying the subsequent processing technology of the welding ring, and improving the casting quality.

[0017] 3. The present invention sets an air source hole. After the casting liquid inside the guide hole cools down, the guide hole drops to the outlet position of the air source hole. The air jet from the air source hole blows the internal metal parts into the cooling cavity, and then the casting mold is moved away from the water cooling mold. The guide hole can be automatically cleared by controlling the flipping of the water cooling mold without affecting subsequent use, and the degree of automation is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the water cooling mold of the present invention; Figure 3 It is an exploded view of the casting mold of the present invention; Figure 4 This is a schematic diagram of the lower mold cover structure of the present invention; Figure 5 This is a schematic diagram of the inner welding ring casting of the present invention; Figure 6 This is a schematic diagram of the inner welding ring casting and cutting of the present invention; Figure 7 This is a schematic diagram of the casting of the intermediate welding ring of the present invention; Figure 8 This is a schematic diagram of the outer welding ring casting of the present invention; Figure 9 This is a schematic diagram of the casting and cutting of the outer welding ring of the present invention; Figure 10 It is a schematic diagram of cleaning the outer welding ring casting guide hole of the present invention.

[0019] Figure numerals: 1. base; 2. bracket; 3. water-cooling mold; 31. flip sprocket; 32. cooling cavity; 33. cooling nozzle; 34. casting inner core; 35. casting hole; 36. air source hole; 37. one-way nozzle; 4. top column; 5. top plate; 6. telescopic drive; 7. casting mold; 71. upper half ring casting cavity; 72. guide hole; 73. lower mold cover; 74. lower half ring casting cavity; 75. casting connecting hole; 76. cooling ring groove; 77. drive slot; 8. casting liquid collecting bucket; 9. motor; 10. driving sprocket. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] Example 1, as Figures 1-10As shown, a water-cooled mold for a welding ring includes a base 1, a bracket 2 is welded to the top of the base 1, a water-cooled mold 3 is rotatably mounted inside the bracket 2, multiple sets of telescopic drives 6 are mounted on the top of the water-cooled mold 3, and multiple sets of mutually sleeved casting molds 7 are fixedly mounted on the bottom of the telescopic end of the telescopic drive 6; A cooling cavity 32 is formed inside the water-cooling mold 3. Cooling nozzles 33 are formed at both ends of the cooling cavity 32. A casting core 34 is provided in the middle of the cooling cavity 32. A casting hole 35 and an air source hole 36 are formed inside the casting core 34. The outlet of the air source hole 36 is located below the outlet of the casting hole 35. An upper semi-ring casting cavity 71 is provided at the bottom of the casting mold 7, a lower mold cover 73 is fixedly installed at the bottom of the casting mold 7, a lower semi-ring casting cavity 74 is provided on the top of the lower mold cover 73, and a guide hole 72 is provided through the interior of the multiple groups of inner casting molds 7, and a casting connecting hole 75 is provided inside the upper semi-ring casting cavity 71 and the lower semi-ring casting cavity 74.

[0022] Furthermore, the cooling pipe mouth 33 is connected to the external cold water circulation system through a metal bellows, and the air source hole 36 is connected to the external air source through a metal bellows. A one-way nozzle 37 is fixedly installed at the outlet of the air source hole 36 to allow cooling water to enter the air source hole 36.

[0023] The number of casting molds 7 can be designed according to actual production requirements. In this embodiment, three groups are taken as an example.

[0024] When the inner casting mold 7 is used to cast the welding ring, Figure 5 As shown, the inlet of the casting hole 35 faces upward, the casting connecting hole 75 of the inner casting mold 7 is connected to the outlet of the casting hole 35, and the middle casting mold 7 blocks the other end of the casting hole 35 of the inner casting mold 7. At this time, the welding ring casting liquid enters the annular casting cavity of the inner casting mold 7 through the casting hole 35. After the casting liquid is poured, the telescopic drive 6 is controlled. The telescopic drive 6 can be a cylinder or a hydraulic cylinder. The telescopic drive 6 drives the inner layer and the middle casting mold 7 to descend synchronously, and the casting connecting hole 75 of the inner casting mold 7 is cut off from the casting hole 35. As shown in the attached figure Figure 6 In the state shown, the mold is controlled to flip over as a whole so that the casting hole 35 faces downward, and the excess casting liquid in the casting hole 35 is poured out and recovered, and then flowing cooling water is injected into the cooling cavity 32 through the cooling nozzle 33 to cool the welding ring. After cooling is completed, the cooling water is drained, and then the mold is flipped over and reset as a whole so that the casting hole 35 faces upward, and the telescopic drive 6 is controlled. The telescopic drive 6 drives the three groups of casting molds 7 away from the water-cooled mold 3, and finally the mold cover 73 is removed to remove the cast welding ring.

[0025] When the outer casting mold 7 is used to cast the welding ring, Figure 8As shown, the inlet of the casting hole 35 faces upward, the guide holes 72 of the inner and middle casting molds 7 are connected to the outlet of the casting hole 35, and at the same time, the casting connecting hole 75 of the outer casting mold 7 is connected to the guide hole 72 of the middle casting mold 7. At this time, the welding ring casting liquid enters the annular casting cavity of the outer casting mold 7 through the casting hole 35 and the guide hole 72. After the casting liquid is poured, the telescopic drive 6 is controlled, and the telescopic drive 6 drives the inner and middle casting molds 7 to rise synchronously. The casting connecting hole 75 of the outer casting mold 7 is cut off from the casting hole 35. At the same time, the liquid in the guide hole 72 is as shown in the attached figure. Figure 9 In the state shown, the mold is controlled to flip over as a whole so that the casting hole 35 faces downward, and the excess casting liquid in the casting hole 35 is poured out for recovery, and then flowing cooling water is injected into the cooling chamber 32 through the cooling pipe mouth 33 to cool the welding ring. After cooling is completed, the cooling water is drained, and then the telescopic drive 6 is controlled, and the telescopic drive 6 drives the inner layer and the middle casting mold 7 to descend, and the guide hole 72 moves to the position of the air source hole 36, and then the air source hole 36 sprays high-pressure gas to blow the cooled metal column in the guide hole 72 into the cooling chamber 32, and finally the mold is flipped over and reset as a whole, with the casting hole 35 facing upward, and the telescopic drive 6 is controlled, and the telescopic drive 6 drives the three groups of casting molds 7 away from the water-cooled mold 3. The cast welding ring can be removed by removing the mold cover 73, and the metal column in the cooling chamber 32 is poured out.

[0026] When the intermediate layer casting mold 7 is used to cast the welding ring, Figure 7 As shown, the inlet of the casting hole 35 faces upward, one end of the guide hole 72 of the inner casting mold 7 is connected to the outlet of the casting hole 35, and the other end is connected to the casting connecting hole 75 of the middle casting mold 7. The outer casting mold 7 blocks the other end of the casting connecting hole 75 of the middle casting mold 7. The specific steps of cutting, cooling and cleaning the guide hole 72 are the same as those of the outer casting mold 7.

[0027] It should be noted that when the present invention is applied to an intelligent casting island, the lower die cover 73 can be easily removed and the welding ring can be unloaded by a robot, which can meet the needs of automated production.

[0028] The second embodiment, based on the above embodiment, further includes that the lower mold cover 73 is threadedly connected to the bottom of the casting mold 7. Through this design, the lower mold cover 73 is easy to disassemble.

[0029] Embodiment 3, based on the above embodiment, further includes that a cooling ring groove 76 is opened at the bottom of the lower mold cover 73. The design of the cooling ring groove 76 can increase the cooling efficiency of the welding ring without affecting the sealing.

[0030] Furthermore, a driving slot 77 is formed on the inner wall of the cooling ring groove 76 .

[0031] Since the lower die cover 73 is located below the casting mold 7 when the welding ring is unloading, a corresponding plug block can be set on the robot. When the plug block is inserted into the drive slot 77, the lower die cover 73 can be unscrewed by simply giving the plug block a rotational force. There is no need to set an adsorption device on the robot, and the welding ring falls into the lower half ring casting cavity 74 of the lower die cover 73. The robot transfers the lower die cover 73 and the welding ring to another robot position, and the unloading can be completed quickly. The structure is simple and suitable for the intelligent casting island.

[0032] Embodiment 4, based on the above embodiment, further includes: three groups of top columns 4 are fixedly installed on the top of the water-cooling mold 3, the maximum spacing between adjacent top columns 4 is greater than the diameter of the largest casting mold 7, and the top of the three groups of top columns 4 are simultaneously fixedly installed with a top plate 5, and the telescopic drive 6 is fixedly installed on the top plate 5.

[0033] With this design, the top column 4 will not affect the transfer between the lower mold cover 73 and the welding ring.

[0034] Embodiment 5, based on the above embodiment, further includes that the inlet of the casting hole 35 is designed in a funnel shape, which has a good casting effect, and the outlet of the casting hole 35 is designed in an arc shape, which can completely pour out the casting liquid in the casting hole 35 when it is turned over.

[0035] The sixth embodiment, based on the above embodiment, further includes a design in which the inner top of the cooling cavity 32 is tilted upward, so that the metal pillars can be better discharged.

[0036] Embodiment 7, based on the above embodiment, further includes: a casting liquid collecting hopper 8 is fixedly installed on the top of the base 1, and the casting liquid collecting hopper 8 is located directly below the casting hole 35. When the mold is flipped as a whole, the casting liquid in the casting hole 35 can be collected by the casting liquid collecting hopper 8, thereby reducing the waste of casting liquid.

[0037] Embodiment 8, based on the above embodiment, further includes: a motor 9 is fixedly installed on the top of the base 1, a driving sprocket 10 is fixedly installed on the output end of the motor 9, a flip sprocket 31 is fixedly installed on the outside of the rotation center of the water-cooling mold 3, and the flip sprocket 31 is connected to the driving sprocket 10 through a chain.

[0038] By controlling the power supply of the motor 9, the motor 9 drives the driving sprocket 10 to rotate, the driving sprocket 10 drives the flip sprocket 31 to rotate, and the flip sprocket 31 drives the water-cooling mold 3 to flip. Through the transmission of the sprocket and the chain, stable transmission can be achieved under high temperature conditions.

[0039] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A water-cooled mold for a welding ring, comprising a base (1), characterized in that: A bracket (2) is welded to the top of the base (1), a water cooling mold (3) is rotatably mounted inside the bracket (2), multiple sets of telescopic drives (6) are mounted on the top of the water cooling mold (3), and multiple sets of mutually sleeved casting molds (7) are fixedly mounted on the bottom of the telescopic end of the telescopic drive (6); A cooling cavity (32) is provided inside the water-cooling mold (3), cooling pipe openings (33) are provided at both ends of the cooling cavity (32), a casting inner core (34) is provided in the middle of the cooling cavity (32), a casting hole (35) and an air source hole (36) are provided inside the casting inner core (34), and an outlet of the air source hole (36) is located below the outlet of the casting hole (35); An upper semi-ring casting cavity (71) is provided at the bottom of the casting mold (7), a lower mold cover (73) is fixedly mounted at the bottom of the casting mold (7), a lower semi-ring casting cavity (74) is provided at the top of the lower mold cover (73), a guide hole (72) is provided through the interior of the multiple groups of casting molds (7) on the inner side, and a casting connecting hole (75) is provided inside the upper semi-ring casting cavity (71) and the lower semi-ring casting cavity (74).

2. The water-cooled mold for welding ring according to claim 1, characterized in that: The lower mold cover (73) is threadedly connected to the bottom of the casting mold (7).

3. The water-cooled mold for welding ring according to claim 2, characterized in that: A cooling ring groove (76) is provided at the bottom of the lower mold cover (73).

4. The water-cooled mold for welding ring according to claim 3, characterized in that: A drive slot (77) is provided on the inner wall of the cooling ring groove (76).

5. The water-cooled mold for welding ring according to claim 4, characterized in that: Three groups of top columns (4) are fixedly mounted on the top of the water cooling mold (3), the maximum spacing between adjacent top columns (4) is greater than the diameter of the largest casting mold (7), and a top plate (5) is fixedly mounted on the top of the three groups of top columns (4), and a telescopic drive (6) is fixedly mounted on the top plate (5).

6. The water-cooled mold for welding ring according to claim 1, characterized in that: The inlet of the casting hole (35) is designed to be funnel-shaped, and the outlet of the casting hole (35) is designed to be arc-shaped.

7. The water-cooled mold for welding ring according to claim 6, characterized in that: The cooling pipe opening (33) is connected to an external cold water circulation system through a metal bellows, and the air source hole (36) is connected to an external air source through a metal bellows. A one-way nozzle (37) is fixedly installed at the outlet of the air source hole (36).

8. The water-cooled mold for welding ring according to claim 7, characterized in that: The inner top of the cooling cavity (32) is designed to be inclined upward.

9. The water-cooled mold for welding ring according to claim 1, characterized in that: A casting liquid collecting hopper (8) is fixedly mounted on the top of the base (1), and the casting liquid collecting hopper (8) is located directly below the casting hole (35).

10. A water-cooled mold for welding rings according to any one of claims 1 to 9, characterized in that: A motor (9) is fixedly mounted on the top of the base (1), a driving sprocket (10) is fixedly mounted on the output end of the motor (9), a flip sprocket (31) is fixedly mounted on the outside of the rotation center of the water-cooling mold (3), and the flip sprocket (31) is connected to the driving sprocket (10) through a chain.

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