A polyurethane pipe joint mold that is easy to disassemble and demold

Abstract

This utility model relates to the field of pipe joint mold technology, specifically a polyurethane pipe joint mold that is easy to disassemble and demold. It includes a lower mold, an upper mold, and a mold core. Several sets of cooling ports are formed on the surface of the upper mold, and a sealing rod is movably inserted into each cooling port. A sealing rod mounting seat is fixed on the surface of the upper mold, and the surface of the sealing rod mounting seat has an insertion groove and a limiting groove. The advantages are: after the cavity is filled, rotating the sealing rod causes the limiting rod to exit from the limiting groove. Then, pulling the sealing rod upwards causes the limiting rod to exit from the insertion groove, allowing the sealing rod to be extracted from the cooling port. The heat of the molten polyurethane material in the cavity can dissipate more quickly through the cooling ports. After standing for a while until the molten polyurethane material near the cooling ports has cooled and solidified, cold water can be poured into the cooling ports, allowing the molten polyurethane material in the cavity to cool and solidify more quickly, thus shortening the waiting time.

Description

Technical Field

[0001] This utility model relates to the field of pipe joint molds, specifically a polyurethane pipe joint mold that is easy to disassemble and demold. Background Technology

[0002] Polyurethane pipe fittings are widely used in pipeline connection projects. Polyurethane pipe fittings come in various shapes, with elbows being one of them. Polyurethane pipe fittings are usually produced using injection molding, which requires the use of injection molds.

[0003] In existing technology, polyurethane pipe joint molds typically consist of an upper mold, a lower mold, and a mold core. The upper mold has an upper cavity on its surface, and the lower mold has a lower cavity on its surface. The mold core is composed of two spliced ​​sections. During use, the mold core is inserted into the lower cavity of the lower mold, and then the upper and lower molds are spliced ​​together. After splicing, molten polyurethane is injected into the cavity using an injection molding machine. After the pipe joint has cooled and solidified, the upper mold is removed, and the pipe joint, which has been formed and is wrapped around the mold core, is taken out from the lower cavity of the lower mold together with the mold core. The two sections of the mold core are then pulled out from both ends of the pipe joint to complete demolding. Finally, the pipe joint is finely processed to complete the production of the pipe joint.

[0004] However, in the existing technology, when demolding, it is necessary to wait for the polyurethane material to cool and solidify before demolding can be carried out. Otherwise, some uncooled material may flow, leading to production failure. The time required for polyurethane material to cool down naturally under the heat dissipation is very long. Utility Model Content

[0005] The purpose of this invention is to provide a polyurethane pipe joint mold that is easy to disassemble and demold, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a polyurethane pipe joint mold that is easy to disassemble and demold, comprising: a lower mold, an upper mold, and a mold core. The upper mold has several sets of cooling ports on its surface, and a sealing rod is movably inserted into the cooling ports. A sealing rod mounting seat is fixed on the surface of the upper mold. The sealing rod mounting seat has an insertion groove and a limiting groove on its surface. A limiting rod is fixed on the body of the sealing rod, and the limiting rod is slidably connected in the limiting groove along the insertion groove.

[0007] Preferably, the lower mold and the upper mold have cavities on their surfaces, and slots are formed on the inner walls of the cavities. A retaining ring is fitted and fixed on the surface of the mold core, and the retaining ring is movably inserted into the slot.

[0008] Preferably, the top of the lower mold is fixed with several sets of positioning rods, and the surface of the upper mold is provided with several sets of positioning holes, with the several sets of positioning rods respectively movably inserted into the several sets of positioning holes.

[0009] Preferably, the sealing rod mounting base is a circular cylindrical structure, the cooling port is a circular hole structure, the sealing rod is a circular rod structure, the insertion groove and the limiting groove are connected, and two sets of insertion groove, limiting groove and limiting rod are provided. The two sets of insertion groove, limiting groove and limiting rod are circumferentially distributed about the center line of the sealing rod.

[0010] Preferably, the lower mold and the upper mold have injection ports on their surfaces, and the upper mold has an exhaust hole at its top. Both the injection ports and the exhaust hole are connected to the cavity.

[0011] Preferably, a mold core handle is fixed on the surface of the mold core.

[0012] Preferably, mold handles are fixed on the surfaces of both the lower and upper molds.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The polyurethane pipe joint mold proposed in this utility model is easy to disassemble and demold. After the cavity is filled, the sealing rod is rotated to allow the limiting rod to exit from the limiting groove. Then, the sealing rod is pulled upward to allow the limiting rod to exit from the insertion groove. The sealing rod can then be pulled out from the cooling port. The heat of the molten polyurethane material in the cavity can be dissipated more quickly through the cooling port. After standing for a while and the molten polyurethane material near the cooling port has cooled and solidified, cold water can be poured into the cooling port to allow the molten polyurethane material in the cavity to cool and solidify more quickly, thus shortening the waiting time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle

[0017] Figure 3 This is a schematic cross-sectional view of the present invention.

[0018] Figure 4 This is a schematic diagram of the lower mold structure.

[0019] In the diagram: 1. Lower mold; 2. Upper mold; 3. Mold core; 4. Slot; 5. Snap ring; 6. Cavity; 7. Injection port; 8. Positioning rod; 9. Positioning hole; 10. Vent hole; 11. Cooling port; 12. Sealing rod; 13. Sealing rod mounting base; 14. Insertion groove; 15. Limiting groove; 16. Limiting rod; 17. Mold core handle; 18. Mold handle. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Example 1: Please refer to Figures 1-4 This utility model provides a technical solution: a polyurethane pipe joint mold that is easy to disassemble and demold, comprising: a lower mold 1, an upper mold 2, and a mold core 3. The upper mold 2 has several sets of cooling ports 11 on its surface, and a sealing rod 12 is movably inserted into each cooling port 11. A sealing rod mounting seat 13 is fixed on the surface of the upper mold 2. The surface of the sealing rod mounting seat 13 has an insertion groove 14 and a limiting groove 15. A limiting rod 16 is fixed to the body of the sealing rod 12, and the limiting rod 16 slides along the insertion groove 14 and is slidably connected to the limiting groove 15. A cavity 6 is formed on the surfaces of the lower mold 1 and the upper mold 2, and the inner wall of the cavity 6... The upper mold has a slot 4, and a retaining ring 5 is fixedly fitted on the surface of the mold core 3. The retaining ring 5 is movably inserted into the slot 4. The sealing rod mounting seat 13 has a circular cylindrical structure, the cooling port 11 has a circular hole structure, and the sealing rod 12 has a circular rod structure. The insertion slot 14 and the limiting slot 15 are connected. There are two sets of insertion slots 14, limiting slots 15 and limiting rods 16. The two sets of insertion slots 14, limiting slots 15 and limiting rods 16 are circumferentially distributed about the center line of the sealing rod 12. The lower mold 1 and the upper mold 2 have injection ports 7 on their surfaces. The top of the upper mold 2 has an exhaust hole 10. Both the injection port 7 and the exhaust hole 10 are connected to the cavity 6.

[0022] In actual use, the retaining ring 5 on the surface of the mold core 3 is inserted into the retaining groove 4, and then the lower mold 1 and the upper mold 2 are assembled. This can both block the side opening of the cavity 6 and leave space between the mold core 3 and the inner wall of the cavity 6. Then, the molten polyurethane material is injected into the cavity 6 through the injection port 7 using an injection molding machine. During injection, the air in the cavity 6 is discharged from the vent 10. After the cavity 6 is filled, the sealing rod 12 is rotated to make the limiting rod 16 retract from the limiting groove 15. Then, the sealing rod 12 is pulled up to make the limiting rod 16 retract from the insertion groove 14. The sealing rod 12 can then be pulled out from the cooling port 11. The heat of the molten polyurethane material in the cavity 6 can be dissipated more quickly through the cooling port 11. After standing for a while until the molten polyurethane material near the cooling port 11 has cooled and solidified, cold water can be poured into the cooling port 11 to make the molten polyurethane material in the cavity 6 cool and solidify more quickly, thus shortening the waiting time.

[0023] Example 2: Based on Example 1, in order to achieve the splicing of the lower mold 1 and the upper mold 2, a number of positioning rods 8 are fixed at the top of the lower mold 1, and a number of positioning holes 9 are opened on the surface of the upper mold 2. The number of positioning rods 8 are respectively movably inserted into the number of positioning holes 9.

[0024] A positioning rod 8 is fixed at the top of the lower mold 1, and a positioning hole 9 is provided on the surface of the upper mold 2. The lower mold 1 and the upper mold 2 can be spliced ​​by the insertion and cooperation of the positioning rod 8 and the positioning hole 9.

[0025] Example 3: Based on Example 2, in order to facilitate the operation of the lower mold 1, the upper mold 2 and the mold core 3, a mold core handle 17 is fixed on the surface of the mold core 3, and a mold handle 18 is fixed on the surface of both the lower mold 1 and the upper mold 2.

[0026] A mold core handle 17 is fixed on the surface of the mold core 3, and a mold handle 18 is fixed on the surface of both the lower mold 1 and the upper mold 2. The mold core 3 can be operated more conveniently by holding the mold core handle 17, and the lower mold 1 and the upper mold 2 can be operated more conveniently by holding the mold handle 18.

[0027] In actual use, the retaining ring 5 on the surface of the mold core 3 is inserted into the retaining groove 4, and then the lower mold 1 and the upper mold 2 are assembled. This can both seal the side opening of the cavity 6 and leave space between the mold core 3 and the inner wall of the cavity 6. Then, the molten polyurethane material is injected into the cavity 6 through the injection port 7 using an injection molding machine. During injection, the air in the cavity 6 is discharged from the vent 10. After the cavity 6 is filled, the sealing rod 12 is rotated to make the limiting rod 16 retract from the limiting groove 15. Then, the sealing rod 12 is pulled upward to make the limiting rod 16 retract from the insertion groove 14. The sealing rod 12 can then be pulled out from the cooling port 11. The heat of the molten polyurethane material in the cavity 6 can be dissipated more quickly through the cooling port 11. After the molten polyurethane material near the cooling port 11 has cooled and solidified, cold water can be poured into the cooling port 11 to allow the molten polyurethane material in the cavity 6 to cool and solidify more quickly, thus shortening the waiting time. A positioning rod 8 is fixed at the top of the lower mold 1, and a positioning hole 9 is opened on the surface of the upper mold 2. The lower mold 1 and the upper mold 2 can be spliced ​​by the insertion and cooperation of the positioning rod 8 and the positioning hole 9. A mold core handle 17 is fixed on the surface of the mold core 3, and mold handles 18 are fixed on the surfaces of both the lower mold 1 and the upper mold 2. The mold core 3 can be operated more conveniently by holding the mold core handle 17, and the lower mold 1 and the upper mold 2 can be operated more conveniently by holding the mold handle 18.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polyurethane pipe joint mold for easy disassembly and demolding, comprising: The lower mold (1), upper mold (2) and mold core (3) are characterized in that: a plurality of cooling ports (11) are provided on the surface of the upper mold (2), a sealing rod (12) is movably inserted into the cooling port (11), a sealing rod mounting seat (13) is fixed on the surface of the upper mold (2), an insertion groove (14) and a limiting groove (15) are provided on the surface of the sealing rod mounting seat (13), a limiting rod (16) is fixed on the rod body of the sealing rod (12), and the limiting rod (16) is slidably connected in the limiting groove (15) along the insertion groove (14).

2. The polyurethane pipe joint mold for easy disassembly and demolding according to claim 1, characterized in that: The lower mold (1) and the upper mold (2) have cavities (6) on their surfaces. The inner wall of the cavity (6) has a slot (4). A retaining ring (5) is fitted and fixed on the surface of the mold core (3). The retaining ring (5) is movably inserted into the slot (4).

3. The polyurethane pipe joint mold for easy disassembly and demolding according to claim 1, characterized in that: The top of the lower mold (1) is fixed with several sets of positioning rods (8), and the surface of the upper mold (2) is provided with several sets of positioning holes (9), and the several sets of positioning rods (8) are respectively movably inserted into the several sets of positioning holes (9).

4. The polyurethane pipe joint mold for easy disassembly and demolding according to claim 1, characterized in that: The sealing rod mounting base (13) has a circular cylindrical structure, the cooling port (11) has a circular hole structure, the sealing rod (12) has a circular rod structure, the insertion groove (14) and the limiting groove (15) are connected, and the insertion groove (14), the limiting groove (15) and the limiting rod (16) are all provided in two sets. The two sets of insertion groove (14), limiting groove (15) and limiting rod (16) are distributed in a circle about the center line of the sealing rod (12).

5. A polyurethane pipe joint mold for easy disassembly and demolding according to claim 1, characterized in that: The lower mold (1) and the upper mold (2) are provided with injection ports (7) on their surfaces, and the upper mold (2) is provided with venting holes (10) at its top. Both the injection ports (7) and the venting holes (10) are connected to the cavity (6).

6. A polyurethane pipe joint mold for easy disassembly and demolding according to claim 1, characterized in that: A mold core handle (17) is fixed on the surface of the mold core (3).

7. A polyurethane pipe joint mold for easy disassembly and demolding according to claim 1, characterized in that: Mold handles (18) are fixed on the surfaces of both the lower mold (1) and the upper mold (2).

Images