Shrinkage-proof die for pipe fitting mounting block

Abstract

The utility model discloses a pipe fitting mounting block shrinkage-proof die, which relates to the technical field of casting dies, and comprises an upper die and a lower die, pipe fitting cavities are arranged in the upper die and the lower die, mounting blocks are arranged in the upper die and the lower die, pipe heads are arranged at two ends of each mounting block, and the upper die and the lower die are provided with pipe fitting cavities. A pouring hopper is fixedly mounted in the middle of the upper end of the upper mold; cooling structures are arranged in the upper mold and the lower mold, one end of a cooling pipeline is connected with a water inlet, the other end of the cooling pipeline is connected with a water outlet, cooling water is injected through the water inlet and then discharged through the water outlet, and shrinkage cavities can be well prevented through water cooling. A connecting structure is arranged in the middle of the periphery of the upper die and the lower die and used for connecting the upper die and the lower die. An air exhaust structure is arranged at the pipe head position of the pipe fitting cavity, compressed air is blown into the negative pressure pipe through the branch pipe, so that a negative pressure area is formed at the front end in the negative pressure pipe, and the negative pressure air exhaust effect of the air exhaust pipe is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting moulds, in particular to an anti-shrinkage hole mould for a pipe fitting installation block. Background Art

[0002] At present, pipe fittings are a general term for parts and components in pipeline systems that play roles such as connection, control, direction change, diversion, sealing and support. Some pipe fittings are formed by injection molding using molds. For example, a pipe fitting mounting block anti-shrinkage hole mold recorded in the patent announcement number CN219598012U, during the production process, the molten metal is injected into the mold cavity of the mold, and in the area near the mounting block, the molten metal flows into the straight runner and then into the cross runner, and then the molten metal enters the ingrowth to fill the mounting block. Since the thickness of the ingrowth gradually decreases from the cross runner to the mounting block, the shrinkage compensation effect of the ingrowth on the mounting block can be fully exerted, and the oblique setting of the ingrowth corresponds to the external structure of the mounting block, which is conducive to the filling of the molten metal. During the casting and molding process of pipe fittings, a large amount of gas caused by the combustion of residual organic matter in the molten metal cannot be discharged smoothly, resulting in casting defects such as air holding and pores in the pipe fittings, affecting the quality of the pipe fittings.

[0003] Based on this, a pipe fitting installation block anti-shrinkage hole mold is now provided, which can eliminate the disadvantages of the existing device. Utility Model Content

[0004] The utility model aims to provide a shrinkage hole prevention mold for a pipe installation block, so as to solve the problem in the background technology that a large amount of gas caused by the combustion of residual organic matter in the molten metal cannot be discharged smoothly, resulting in casting defects such as air holding and pores in the pipe.

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

[0006] A shrinkage hole prevention mold for a pipe mounting block comprises an upper mold and a lower mold, wherein a pipe cavity is arranged inside the upper mold and the lower mold, a mounting block is arranged inside the upper mold and the lower mold, pipe heads are arranged at both ends of the mounting block, the pipe cavity is connected with the interior of the mounting block, a pouring bucket is fixedly installed at the middle position of the upper end of the upper mold, and the pouring bucket is connected with the interior of the mounting block through a runner; a cooling structure is arranged inside the upper mold and the lower mold for cooling the molten iron inside the pipe cavity and the mounting block; a connecting structure is arranged in the middle position around the upper mold and the lower mold for connecting the upper mold and the lower mold; an exhaust structure is arranged at the pipe head position of the pipe cavity for exhausting the air inside the pipe cavity.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional solution: the cooling structure includes a cooling channel, which is opened inside the upper mold and the lower mold and connected to the outside. A cooling pipe is installed inside the cooling channel, a water inlet is provided at one end of the cooling pipe, and a drain outlet is provided at the other end of the cooling pipe.

[0009] In an optional scheme: the connecting structure includes an upper locking block and a lower locking block, the upper locking block is installed in the middle position of the side of the upper mold, and the lower locking block is installed in the middle position of the side of the lower mold, the upper locking block corresponds to the lower locking block, and a sliding hole is opened through the middle position of the upper ends of the upper locking block and the lower locking block, a cavity is opened in the middle position inside the upper locking block, and a cross locking hole is opened at the lower end of the lower locking block, the sliding hole is connected to the cavity and the cross locking hole, the inner wall of the sliding hole is slidably connected to the pull rod, and the lower end of the pull rod is fixedly connected to a cross bar matching the cross locking hole, the outer wall of the pull rod is fixedly connected to a limit ring, the outer wall of the limit ring is slidably connected to the inner wall of the cavity, the lower end of the limit ring is fixedly connected to a spring, and the lower end of the spring is fixedly connected to the bottom of the cavity.

[0010] In an optional scheme: the exhaust structure includes a hair dryer, which is installed at the upper end of the upper mold, and the output end of the hair dryer is fixedly connected to the air inlet connector, and the other end of the air inlet connector is fixedly connected to the branch pipe, and the air outlet end of the branch pipe is curved and inserted into the middle part of the negative pressure pipe, one end of the negative pressure pipe is open, and the other end of the negative pressure pipe is fixedly connected to the exhaust pipe, a one-way valve is installed inside the exhaust pipe, the other end of the exhaust pipe is connected to the position of the pipe head of the pipe cavity, and the air outlet end is arranged toward the open direction of the negative pressure pipe.

[0011] In an optional solution: handles are provided on both sides of the upper end of the upper mold.

[0012] In an optional solution: a rubber sleeve is installed on the surface of the handle, and an outer surface of the rubber sleeve is provided with anti-slip patterns.

[0013] In an optional solution: a positioning hole is opened at the corner of the lower end of the upper mold, and a positioning column is fixedly connected to the corner of the upper end of the lower mold, and the positioning hole matches the positioning column.

[0014] In an optional solution: an exhaust needle is provided at the upper end of the tube head, and a one-way valve is provided inside the exhaust needle.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The utility model adopts a cooling structure, by setting a cooling pipe with one end connected to a water inlet and the other end connected to a drain, injecting cooling water through the water inlet and then discharging it through the drain, and cooling by water cooling, which can better prevent shrinkage holes.

[0017] 2. The utility model installs an exhaust needle on the pipe head so that during the pouring process, the gas generated in the mounting block can be discharged smoothly from the exhaust needle to ensure smooth molten iron punching. At the same time, the staff starts the hair dryer, and the hair dryer blows compressed air into the negative pressure pipe through the branch pipe, thereby forming a negative pressure area at the front end of the negative pressure pipe, achieving the effect of negative pressure exhaust in the exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the utility model in a separated state.

[0020] Figure 3 It is a structural schematic diagram of the internal structure position of the utility model.

[0021] Figure 4 It is a structural schematic diagram of the connection structure position of the utility model.

[0022] Figure 5 It is a structural schematic diagram of the position of the air extraction structure of the utility model.

[0023] Notes on the reference numerals: 11. upper mold; 12. lower mold; 13. pipe cavity; 14. mounting block; 15. pouring bucket; 16. cooling pipe; 17. water inlet; 18. drain outlet; 19. upper locking block; 20. lower locking block; 21. cavity groove; 22. pull rod; 23. limit ring; 24. spring; 25. cross lock hole; 26. cross bar; 27. blower; 28. air inlet joint; 29. ​​branch pipe; 30. air outlet; 31. exhaust pipe; 32. negative pressure pipe; 33. positioning hole; 34. positioning column; 35. exhaust needle DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Example 1

[0026] In one embodiment, Figure 1-Figure 5As shown, a pipe mounting block anti-shrinkage hole mold comprises an upper mold 11 and a lower mold 12, wherein a pipe cavity 13 is arranged inside the upper mold 11 and the lower mold 12, and a mounting block 14 is arranged inside the upper mold 11 and the lower mold 12, and pipe heads are arranged at both ends of the mounting block 14, and the pipe cavity 13 is connected with the inside of the mounting block 14, and a pouring hopper 15 is fixedly installed at the middle position of the upper end of the upper mold 11, and the pouring hopper 15 is connected with the inside of the mounting block 14 through a runner; a cooling structure is arranged inside the upper mold 11 and the lower mold 12 for cooling the molten iron inside the pipe cavity 13 and the mounting block 14; a connecting structure is arranged in the middle position around the upper mold 11 and the lower mold 12 for connecting the upper mold 11 and the lower mold 12; an exhaust structure is arranged at the pipe head position of the pipe cavity 13 for exhausting the air inside the pipe cavity 13.

[0027] In this embodiment, the staff uses a connecting structure to connect the upper mold 11 and the lower mold 12, and then injects molten iron into the pipe cavity 13 and the mounting block 14 through the pouring bucket 15, and at the same time starts the exhaust structure to discharge the air inside the pipe cavity 13. During the pouring process, the staff starts the cooling structure to cool down the molten iron inside the pipe cavity 13 and the mounting block 14.

[0028] In one embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the cooling structure includes a cooling channel, which is opened inside the upper mold 11 and the lower mold 12 and connected to the outside. A cooling pipe 16 is installed inside the cooling channel. A water inlet 17 is provided at one end of the cooling pipe 16, and a drain outlet 18 is provided at the other end of the cooling pipe 16.

[0029] By setting a cooling pipe 16 with one end connected to the water inlet 17 and the other end connected to the drain 18, cooling water is injected through the water inlet 17 and then discharged through the drain 18. Through water cooling, shrinkage holes can be better prevented.

[0030] In one embodiment, Figure 1 and Figure 4As shown, the connecting structure includes an upper locking block 19 and a lower locking block 20, the upper locking block 19 is installed in the middle position of the side of the upper mold 11, and the lower locking block 20 is installed in the middle position of the side of the lower mold 12, the upper locking block 19 corresponds to the lower locking block 20, and a sliding hole is opened through the middle position of the upper ends of the upper locking block 19 and the lower locking block 20, a cavity 21 is opened in the middle position inside the upper locking block 19, and a cross locking hole 25 is opened at the lower end of the lower locking block 20, the sliding hole is connected to the cavity 21 and the cross locking hole 25, the inner wall of the sliding hole is slidably connected to the pull rod 22, and the lower end of the pull rod 22 is fixedly connected to a cross bar 26 matching the cross locking hole 25, the outer wall of the pull rod 22 is fixedly connected to a limit ring 23, the outer wall of the limit ring 23 is slidably connected to the inner wall of the cavity 21, the lower end of the limit ring 23 is fixedly connected to a spring 24, and the lower end of the spring 24 is fixedly connected to the bottom of the cavity 21.

[0031] The staff puts the upper mold 11 and the lower mold 12 together tightly, then presses down the pull rod 22, compresses the spring 24, and when the cross bar 26 is below the cross lock hole 25, the staff then turns the pull rod 22, then releases the pull rod 22, the spring 24 rebounds, and the cross bar 26 is snapped into the cross lock hole 25, thereby ensuring that the upper mold 11 and the lower mold 12 are not easily separated, thereby ensuring that the subsequent pouring work proceeds smoothly.

[0032] In one embodiment, Figure 1 and Figure 5 As shown, the exhaust structure includes a hair dryer 27, which is installed at the upper end of the upper mold 11, and the output end of the hair dryer 27 is fixedly connected to the air inlet connector 28, and the other end of the air inlet connector 28 is fixedly connected to the branch pipe 29, and the air outlet end 30 of the branch pipe 29 is bent and inserted into the middle of the negative pressure pipe 32, one end of the negative pressure pipe 32 is open, and the other end of the negative pressure pipe 32 is fixedly connected to the exhaust pipe 31, a one-way valve is installed inside the exhaust pipe 31, and the other end of the exhaust pipe 31 is connected to the pipe head position of the pipe cavity 13, and the air outlet end 30 is arranged toward the open direction of the negative pressure pipe 32.

[0033] The staff starts the hair dryer 27, and the hair dryer 27 blows compressed air into the negative pressure pipe 32 through the branch pipe 29, thereby forming a negative pressure area at the front end of the inner part of the negative pressure pipe 32, achieving the effect of negative pressure exhaustion in the exhaust pipe 31.

[0034] Example 2

[0035] In one embodiment, Figure 1 As shown, handles are provided on both sides of the upper end of the upper mold 11.

[0036] Handles are provided on both sides of the upper end of the upper mold 11 to facilitate the staff to move the upper mold 11.

[0037] In one embodiment, Figure 1 As shown, a rubber sleeve is installed on the surface of the handle, and an anti-slip pattern is arranged on the outer surface of the rubber sleeve.

[0038] A rubber sleeve is installed on the surface of the handle. The rubber sleeve is soft, thereby improving the grip of the staff. Anti-skid patterns are set on the outer surface of the rubber sleeve to increase the friction coefficient of the outer surface of the rubber sleeve, thereby facilitating the staff to lift the upper mold 11.

[0039] In one embodiment, Figure 2 As shown, a positioning hole 33 is opened at the lower corner of the upper mold 11, and a positioning column 34 is fixedly connected to the upper corner of the lower mold 12, and the positioning hole 33 matches the positioning column 34.

[0040] By providing matching positioning holes 33 and positioning columns 34, the upper mold 11 and the lower mold 12 are closely fitted, thereby ensuring that the positions of the mounting blocks 14 inside the upper mold 11 and the lower mold 12 are completely corresponding, ensuring smooth subsequent pouring work.

[0041] In one embodiment, Figure 1 and Figure 3 As shown, an exhaust needle 35 is provided at the upper end of the pipe head, and a one-way valve is provided inside the exhaust needle 35.

[0042] An exhaust needle 35 is installed on the pipe head so that during the pouring process, the gas generated in the mounting block 14 can be smoothly discharged from the exhaust needle 35 to ensure smooth molten iron punching.

[0043] The above embodiment discloses a pipe fitting mounting block anti-shrinkage hole mold, wherein the staff fits the upper mold 11 and the lower mold 12 tightly together, then presses down the pull rod 22, and the spring 24 is compressed. When the cross bar 26 is located below the cross lock hole 25, the staff then rotates the pull rod 22, then releases the pull rod 22, the spring 24 rebounds, and the cross bar 26 is stuck in the cross lock hole 25 position, thereby ensuring that the upper mold 11 and the lower mold 12 are not easy to separate, and then molten iron is injected into the pipe fitting cavity 13 and the mounting block 14 through the pouring bucket 15. During the pouring process, the gas generated in the mounting block 14 is smoothly discharged from the exhaust needle 35. At the same time, the staff starts the hair dryer 27, and the hair dryer 27 blows compressed air into the negative pressure pipe 32 through the branch pipe 29, thereby forming a negative pressure zone at the internal front end of the negative pressure pipe 32, achieving the effect of negative pressure exhaust of the exhaust pipe 31. During the pouring process, the staff injects cooling water through the water inlet 17 and then discharges it through the drain port 18, thereby preventing shrinkage holes.

[0044] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A pipe fitting installation block anti-shrinkage hole mold, comprising an upper mold (11) and a lower mold (12), wherein a pipe fitting cavity (13) is arranged inside the upper mold (11) and the lower mold (12), a mounting block (14) is arranged inside the upper mold (11) and the lower mold (12), both ends of the mounting block (14) are provided with pipe heads, the pipe fitting cavity (13) is connected with the inside of the mounting block (14), a pouring hopper (15) is fixedly installed at the middle position of the upper end of the upper mold (11), and the pouring hopper (15) is connected with the inside of the mounting block (14) through a runner; It is characterized in that It also includes a cooling structure, which is arranged inside the upper mold (11) and the lower mold (12) and is used to cool the molten iron inside the pipe cavity (13) and the mounting block (14); A connecting structure, the connecting structure being arranged at a middle position around the upper mold (11) and the lower mold (12) and being used to connect the upper mold (11) and the lower mold (12); An air extraction structure is arranged at a pipe head position of the pipe cavity (13) and is used to exhaust the air inside the pipe cavity (13).

2. The anti-shrinkage cavity mold for pipe fitting installation block according to claim 1, characterized in that: The cooling structure comprises a cooling channel, wherein the cooling channel is opened inside the upper mold (11) and the lower mold (12) and is connected to the outside, a cooling pipe (16) is installed inside the cooling channel, a water inlet (17) is provided at one end of the cooling pipe (16), and a water outlet (18) is provided at the other end of the cooling pipe (16).

3. The anti-shrinkage cavity mold for pipe fitting installation block according to claim 1, characterized in that: The connection structure comprises an upper locking block (19) and a lower locking block (20), wherein the upper locking block (19) is mounted at the middle position of the side of the upper mold (11), and the lower locking block (20) is mounted at the middle position of the side of the lower mold (12), wherein the upper locking block (19) corresponds to the lower locking block (20), wherein a sliding hole is provided through the middle position of the upper ends of the upper locking block (19) and the lower locking block (20), wherein a cavity (21) is provided in the middle position inside the upper locking block (19), and wherein a cross locking hole (21) is provided at the lower end of the lower locking block (20). 5), the sliding hole is connected with the cavity (21) and the cross lock hole (25), the inner wall of the sliding hole is slidably connected to the pull rod (22), the lower end of the pull rod (22) is fixedly connected with a cross bar (26) matching the cross lock hole (25), the outer wall of the pull rod (22) is fixedly connected to the limit ring (23), the outer wall of the limit ring (23) is slidably connected to the inner wall of the cavity (21), the lower end of the limit ring (23) is fixedly connected to the spring (24), and the lower end of the spring (24) is fixedly connected to the bottom of the cavity (21).

4. The anti-shrinkage cavity mold for pipe fitting installation block according to claim 1, characterized in that: The exhaust structure comprises a blower (27), wherein the blower (27) is mounted on the upper end of the upper mold (11), wherein the output end of the blower (27) is fixedly connected to an air inlet connector (28), wherein the other end of the air inlet connector (28) is fixedly connected to a branch pipe (29), wherein an air outlet end (30) of the branch pipe (29) is inserted into the middle of a negative pressure pipe (32) in a curved shape, wherein one end of the negative pressure pipe (32) is open, and the other end of the negative pressure pipe (32) is fixedly connected to an exhaust pipe (31), wherein a one-way valve is installed inside the exhaust pipe (31), wherein the other end of the exhaust pipe (31) is connected to the pipe head position of the pipe cavity (13), and wherein the air outlet end (30) is arranged in the open direction of the negative pressure pipe (32).

5. The anti-shrinkage cavity mold for pipe fitting installation block according to claim 1, characterized in that: Handles are provided on both sides of the upper end of the upper mold (11).

6. The anti-shrinkage cavity mold for pipe fitting installation block according to claim 5, characterized in that: A rubber sleeve is installed on the surface of the handle, and an anti-slip pattern is arranged on the outer surface of the rubber sleeve.

7. The anti-shrinkage cavity mold for pipe fitting installation block according to claim 1, characterized in that: A positioning hole (33) is provided at the lower corner of the upper mold (11), and a positioning column (34) is fixedly connected to the upper corner of the lower mold (12), and the positioning hole (33) matches the positioning column (34).

8. The anti-shrinkage cavity mold for pipe fitting installation block according to claim 1, characterized in that: An exhaust needle (35) is arranged at the upper end of the pipe head, and a one-way valve is arranged inside the exhaust needle (35).

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