Steel lining polytetrafluoroethylene reducer mould pressing device

Abstract

The utility model discloses a steel lining polytetrafluoroethylene reducer mould pressing device, which particularly relates to the technical field of mould pressing and comprises a large flange plate, a mould core is mounted at the upper end of the large flange plate, a reducer steel pipe body is sleeved on the outer end face of the mould core, and the lower end of the reducer steel pipe body is detachably and fixedly connected with the large flange plate. The top of the mold core is sleeved with a small flange plate, and the small flange plate is detachably and fixedly connected with the upper end of the large-small head steel pipe body; and steel lining polytetrafluoroethylene is filled between the reducer steel pipe body and the mold core. According to the utility model, damage to the steel lining polytetrafluoroethylene caused by local collision of the reducer steel pipe body to the steel lining polytetrafluoroethylene when the reducer steel pipe body is disassembled can be effectively prevented, so that the preformed steel lining polytetrafluoroethylene is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of molding, in particular to a steel-lined polytetrafluoroethylene size head molding device. Background Art

[0002] Polytetrafluoroethylene is also known as "Teflon" and "Teflon". It is a polymer compound made of tetrafluoroethylene by polymerization. It has excellent chemical stability and corrosion resistance. It is one of the best corrosion-resistant materials in the world today. Steel-lined tetrafluoroethylene pipe fittings play a great role in the chemical industry.

[0003] Steel-lined PTFE reducers are usually lined with a layer of PTFE material on the inner wall of ordinary carbon steel reducers through molding. Specifically, it is made of PTFE resin powder through molding and sintering. Generally, the PTFE resin powder is extruded into shape by pressurizing the mold core with a bladder with high-pressure water. However, this process is more dependent on the experience of the operator. The gap between the mold core and the pipe body is not fixed, which is prone to uneven thickness of the PTFE layer.

[0004] The application number is 202021184117.7, and the name is an authorized utility model of a steel-lined polytetrafluoroethylene large and small head molding device, which includes a large and small head steel pipe body, a mold core, a large flange cover, and a small flange cover. The mold core is provided with a number of small holes around it that are connected to the cavity. The end face of the mold core is also provided with a water injection port, and the water injection port is connected to a high-pressure pump. The side of the mold core is wrapped with a layer of leather bag, and the upper and lower openings of the leather bag are both air-tightly connected to the mold core; the large flange cover is provided with a first molding groove and a positioning groove, and the small flange cover is provided with a second molding groove and a positioning hole; during assembly, the positioning groove of the large flange cover and the positioning hole of the small flange cover are passed.

[0005] The above-mentioned comparative documents have the following problems:

[0006] During disassembly, the large and small head steel pipe bodies need to be separated from the mold core. However, the comparative document does not have a function to guide the large and small head steel pipe bodies during disassembly. The large and small head steel pipe bodies are prone to local collision with the steel lining polytetrafluoroethylene during disassembly, thereby causing damage to the steel lining polytetrafluoroethylene.

[0007] Therefore, we make improvements on this and propose a steel-lined polytetrafluoroethylene large and small head molding device. Utility Model Content

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0009] The utility model discloses a steel-lined polytetrafluoroethylene size head molding device, comprising a large flange, a mold core is installed on the upper end of the large flange, a size head steel pipe body is sleeved on the outer end surface of the mold core, and the lower end of the size head steel pipe body is detachably fixedly connected to the large flange, a small flange is sleeved on the top of the mold core, and the small flange is detachably fixedly connected to the upper end of the size head steel pipe body;

[0010] Steel-lined polytetrafluoroethylene is filled between the large and small head steel pipe bodies and the mold core.

[0011] As a preferred technical solution of the utility model, the small flange is detachably fixedly connected to the upper end of the large and small head steel pipe body by a first bolt and a first nut matched with the first bolt.

[0012] As a preferred technical solution of the utility model, the large flange is detachably fixedly connected to the lower end of the large and small head steel pipe body by a second bolt and a second nut matched with the second bolt.

[0013] As an optimal technical solution of the utility model, two vertical guide columns are symmetrically installed on the large flange, and guide sliders are slidably mounted on the two vertical guide columns along the vertical direction. The two guide sliders are symmetrically fixedly installed at the left and right ends of the bottom of the large and small head steel pipe bodies.

[0014] As a preferred technical solution of the utility model, the lower end of the vertical guide column passes through the upper end surface of the large flange and extends to the inside of the large flange, and the bottom of the vertical guide column is detachably fixedly connected to the large flange by a top screw.

[0015] As a preferred technical solution of the utility model, a positioning groove matching the size of the bottom of the mold core is opened in the middle of the upper end of the large flange, and the bottom of the mold core is placed in the positioning groove.

[0016] As a preferred technical solution of the utility model, a pressure gauge is fixedly installed on the upper end of the mold core, and the lower end of the pressure gauge sensing end passes through the upper end of the mold core and extends to the inside of the mold core;

[0017] A water injection pipe is installed at the upper end of the mold core, and a pipe cover is arranged at the upper end of the water injection pipe.

[0018] The beneficial effects of the utility model are:

[0019] 1. This type of steel-lined polytetrafluoroethylene large and small head molding device can fill the mold core with water through the water injection pipe and maintain the water pressure at 17.5-35MPa. The high-pressure water will extrude the steel-lined polytetrafluoroethylene through the mold core. The pressure holding time is 1-10 minutes, which can preform the steel-lined polytetrafluoroethylene.

[0020] 2. This type of steel-lined polytetrafluoroethylene reducer and reducer molding device can first disassemble the small flange after the steel-lined polytetrafluoroethylene is preformed, and then remove the small flange from the reducer and reducer steel pipe body, and then disassemble the reducer and reducer steel pipe body and the steel-lined polytetrafluoroethylene from bottom to top along the direction of the vertical guide column to avoid the reducer and reducer steel pipe body from partially colliding with the steel-lined polytetrafluoroethylene during disassembly, causing damage to the steel-lined polytetrafluoroethylene, and finally remove the steel-lined polytetrafluoroethylene from the mold core.

[0021] The utility model can effectively prevent the large and small head steel pipe bodies from partially colliding with the steel lining polytetrafluoroethylene during disassembly, thereby causing damage to the steel lining polytetrafluoroethylene, thereby protecting the preformed steel lining polytetrafluoroethylene. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a structural schematic diagram of a steel-lined polytetrafluoroethylene reducer and reducer molding device of the utility model;

[0024] Figure 2 The utility model is a partial structural schematic diagram of a steel-lined polytetrafluoroethylene reducer and reducer molding device.

[0025] Figure 3 The utility model is a partial structural sectional view of a steel-lined polytetrafluoroethylene reducer and reducer molding device.

[0026] In the figure: 1. large flange; 2. steel-lined polytetrafluoroethylene; 3. mold core; 4. water injection pipe; 5. pressure gauge; 6. small flange; 7. first bolt; 8. large and small head steel pipe body; 9. second bolt; 10. vertical guide column; 11. guide slider; 12. top screw; 13. positioning groove. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] Example: Figure 1-3 As shown, the utility model is a steel-lined polytetrafluoroethylene size head molding device, comprising a large flange 1, a mold core 3 is installed on the upper end of the large flange 1, a size head steel pipe body 8 is sleeved on the outer end surface of the mold core 3, and the lower end of the size head steel pipe body 8 is detachably fixedly connected to the large flange 1, and a small flange 6 is sleeved on the top of the mold core 3, and the small flange 6 is detachably fixedly connected to the upper end of the size head steel pipe body 8;

[0029] Steel-lined polytetrafluoroethylene 2 is filled between the large and small head steel pipe body 8 and the mold core 3. The steel-lined polytetrafluoroethylene 2 is poured into the gap between the mold core 3 and the large and small head steel pipe body 8 from the gap at the top between the mold core 3 and the large and small head steel pipe body 8. After pouring the steel-lined polytetrafluoroethylene 2, the small flange 6 can be installed.

[0030] In this embodiment, Figure 1 As shown, the small flange 6 is detachably fixedly connected to the upper end of the large and small head steel pipe body 8 through a first bolt 7 and a first nut matched with the first bolt 7.

[0031] The first bolt 7 and the first nut can facilitate the installation and disassembly of the small flange 6 and the large and small head steel pipe body 8.

[0032] The large flange 1 is detachably fixedly connected to the lower end of the large and small head steel pipe body 8 through a second bolt 9 and a second nut matched with the second bolt 9.

[0033] The second bolts 9 and the second nuts can facilitate the installation and disassembly of the large flange 1 and the large and small head steel pipe bodies 8.

[0034] Two vertical guide columns 10 are symmetrically mounted on the large flange 1 , and guide sliders 11 are slidably mounted on the two vertical guide columns 10 along the vertical direction. The two guide sliders 11 are symmetrically fixedly mounted on the left and right ends of the bottom of the large and small head steel pipe body 8 .

[0035] After the steel-lined polytetrafluoroethylene 2 is preformed, the small flange 6 can be disassembled first, and then the small flange 6 can be removed from the reducer and reducer steel pipe body 8, and then the reducer and reducer steel pipe body 8 can be disassembled, and the reducer and reducer steel pipe body 8 can be separated from the steel-lined polytetrafluoroethylene 2 from bottom to top along the direction of the vertical guide column 10 to avoid the reducer and reducer steel pipe body 8 from partially colliding with the steel-lined polytetrafluoroethylene 2 during disassembly, causing damage to the steel-lined polytetrafluoroethylene 2, and finally the steel-lined polytetrafluoroethylene 2 can be removed from the mold core 3.

[0036] like Figure 1 and Figure 3 As shown, the lower end of the vertical guide column 10 passes through the upper end surface of the large flange 1 and extends to the inside of the large flange 1, and the bottom of the vertical guide column 10 is detachably fixedly connected to the large flange 1 through a top screw 12.

[0037] By unscrewing the top screw 12 , the bottom of the vertical guide column 10 can be pulled out from the large flange 1 , thereby completing the disassembly of the vertical guide column 10 .

[0038] like Figure 2 As shown, a positioning groove 13 matching the size of the bottom of the mold core 3 is opened at the middle of the upper end of the large flange 1, and the bottom of the mold core 3 is placed in the positioning groove 13.

[0039] By providing the positioning groove 13 , the mold core 3 can be positioned quickly.

[0040] like Figure 1 As shown, a pressure gauge 5 is fixedly installed on the upper end of the mold core 3, and the lower end of the sensing end of the pressure gauge 5 passes through the upper end of the mold core 3 and extends to the inside of the mold core 3; through the pressure gauge 5, the water pressure in the mold core 3 can be easily monitored.

[0041] like Figure 1 As shown, a water injection pipe 4 is installed at the upper end of the mold core 3, and a pipe cover is provided at the upper end of the water injection pipe 4. The pipe cover is opened, and water can be fully injected into the mold core 3 through the water injection pipe 4, and the water pressure is maintained at 17.5-35MPa. The high-pressure water will squeeze the steel-lined polytetrafluoroethylene 2 through the mold core 3, and the pressure holding time is 1-10 minutes, so that the steel-lined polytetrafluoroethylene 2 can be preformed.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A steel-lined polytetrafluoroethylene reducer and reducer molding device, characterized in that: It comprises a large flange (1), the upper end of which is provided with a mold core (3), the outer end surface of which is provided with a large and small head steel pipe body (8), and the lower end of which is detachably fixedly connected to the large flange (1), and the top of which is provided with a small flange (6), and the small flange (6) is detachably fixedly connected to the upper end of which is detachably fixedly connected to the large and small head steel pipe body (8); The space between the large and small head steel pipe body (8) and the mold core (3) is filled with steel-lined polytetrafluoroethylene (2); Two vertical guide columns (10) are symmetrically mounted on the large flange (1), and guide slide blocks (11) are slidably mounted on the two vertical guide columns (10) in the vertical direction. The two guide slide blocks (11) are symmetrically fixedly mounted on the left and right ends of the bottom of the large and small head steel pipe body (8); The lower end of the vertical guide column (10) passes through the upper end surface of the large flange (1) and extends into the interior of the large flange (1), and the bottom of the vertical guide column (10) is detachably fixedly connected to the large flange (1) via a top screw (12).

2. A steel-lined polytetrafluoroethylene reducer and reducer molding device according to claim 1, characterized in that: The small flange (6) is detachably fixedly connected to the upper end of the large and small head steel pipe body (8) via a first bolt (7) and a first nut matched with the first bolt (7).

3. A steel-lined polytetrafluoroethylene reducer and reducer molding device according to claim 2, characterized in that: The large flange (1) is detachably fixedly connected to the lower end of the large and small head steel pipe body (8) via a second bolt (9) and a second nut matched with the second bolt (9).

4. A steel-lined polytetrafluoroethylene reducer and reducer molding device according to claim 1, characterized in that: A positioning groove (13) matching the size of the bottom of the mold core (3) is provided at the middle of the upper end of the large flange (1), and the bottom of the mold core (3) is placed in the positioning groove (13).

5. A steel-lined polytetrafluoroethylene reducer and reducer molding device according to claim 4, characterized in that: A pressure gauge (5) is fixedly mounted on the upper end of the mold core (3); the lower end of the sensing end of the pressure gauge (5) passes through the upper end of the mold core (3) and extends into the interior of the mold core (3); A water injection pipe (4) is installed at the upper end of the mold core (3), and a pipe cover is provided at the upper end of the water injection pipe (4).

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