Filler shaping mold

Abstract

The packing shaping mold comprises a base, an upper-layer plate, an air cylinder and a mold assembly, the base is of a square flat plate structure, the upper-layer plate is arranged above the base at intervals, the air cylinder is vertically and fixedly installed in the middle of the upper end of the upper-layer plate, and the mold assembly is arranged at the position, corresponding to the upper end of the base, below the air cylinder; the mold assembly comprises an outer ring, a mandrel and a pressing ring, the outer ring is positioned on the base, the mandrel is coaxially arranged in the outer ring at an interval, and an annular gap between the mandrel and the outer ring is used for being filled with filler to be machined; a pressing ring is coaxially arranged above the filler in a sliding mode, the size of the pressing ring is matched with the annular gap between the mandrel and the outer ring, and the pressing ring can be embedded into the annular gap between the mandrel and the outer ring. Packing packing formed by the packing forming mold is consistent in size and tension, and the sealing effect of a spray valve can be improved.

Description

Technical Field

[0001] This application belongs to the field of valves and relates to valve sealing technology, specifically a packing molding die. Background Technology

[0002] Currently, the packing of the CXF 110 spray valve is made of 12×12 polyvinyl fluoride synthetic carbon fiber. As a shaft seal packing, a large number of packings are used. Packings are consumable items. During long-term use, material penetrates into the inside of the packing, causing it to lose its elasticity and carbonize when heated, reducing the sealing effect and causing material leakage and air intake from the shaft seal. Therefore, the packings need to be replaced regularly.

[0003] In the past, replacing the sealing packing during routine maintenance required manually cutting the long rope of the braided packing with scissors. However, the cuts were uneven and of varying lengths each time, resulting in loose packing during filling and affecting the sealing effect. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this application provides a filler shaping mold to achieve uniform filler dimensions.

[0005] The following technical solution is specifically adopted:

[0006] A filler shaping mold, characterized in that it includes a base, an upper plate, a cylinder, and a mold assembly. The base is a square flat plate structure, and an upper plate is spaced apart on the top of the base. A cylinder is vertically fixed in the middle of the upper end of the upper plate. The piston of the cylinder passes through a through hole in the middle of the upper plate and vertically downwards between the upper plate and the base. The piston can move up and down. A punch is fixed at the lower end of the piston. A mold assembly is provided on the upper end of the base below the cylinder. The mold assembly includes an outer ring, a mandrel, and a pressure ring. The outer ring is positioned on the base. A mandrel is coaxially spaced inside the outer ring. The annular gap between the mandrel and the outer ring is used to fill the filler to be processed. A pressure ring is slidably arranged coaxially above the filler. The size of the pressure ring matches the annular gap between the mandrel and the outer ring. The pressure ring can be embedded in the annular gap between the mandrel and the outer ring.

[0007] Furthermore, uprights are fixed at the four corners between the upper plate and the base, forming a rectangular cubic frame structure.

[0008] Furthermore, a gasket is installed on the base inside the outer ring, and the gasket fits tightly with the inner diameter of the outer ring, with the upper end of the gasket being flat and smooth.

[0009] Moreover, the diameter of the punch is larger than the diameter of the pressure ring, and the punch and the pressure ring are coaxially aligned vertically.

[0010] In summary, the technical solutions provided in the embodiments of this application have the following technical effects or advantages:

[0011] The packing material formed using the packing shaping mold of this application has consistent dimensions and tension, which can improve the sealing effect of the spray valve. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure.

[0013] Figure 2 yes Figure 1 Enlarged view of section A.

[0014] Meaning of the reference numerals in the attached diagram: 1. Cylinder; 2. Upper plate; 3. Bolt; 4. Upright rod; 5. Piston; 6. Punch; 7. Pressure ring; 8. Packing; 9. Outer ring; 10. Base; 11. Mandrel; 12. Gasket. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0016] A type of filler 8 shaping mold, see Figure 1 As shown, the assembly includes a base 10, an upper plate 2, a cylinder 1, and a mold assembly. The base 10 is a square flat plate structure. An upper plate 2 is spaced apart on the top of the base 10. Uprights 4 are fixed at the four corners between the upper plate 2 and the base 10, forming a rectangular cubic frame structure.

[0017] A cylinder 1 is vertically fixed in the middle of the upper end of the upper plate 2. The cylinder 1 is connected to an external air source. The plunger 5 of the cylinder 1 passes through the through hole in the middle of the upper plate 2 and vertically downwards between the upper plate 2 and the base 10. The plunger 5 can move up and down. A punch 6 is fixed in the lower end of the plunger 5. The punch 6 is made of a hard and wear-resistant material. The diameter of the punch 6 is larger than the diameter of the pressure ring 7, and the punch 6 and the pressure ring 7 are coaxially aligned vertically.

[0018] A mold assembly is provided on the upper end of the base 10 corresponding to the cylinder 1. The mold assembly includes an outer ring 9, a mandrel 11, and a pressure ring 7. The outer ring 9 is positioned on the base 10. A mandrel 11 is coaxially spaced inside the outer ring 9. The annular gap between the mandrel 11 and the outer ring 9 is used to fill the filler 8 to be processed. A pressure ring 7 is coaxially slidably arranged above the filler 8. The size of the pressure ring 7 matches the annular gap between the mandrel 11 and the outer ring 9. The pressure ring 7 can be embedded in the annular gap between the mandrel 11 and the outer ring 9.

[0019] To ensure flat pressing, a shim 12 is installed on the base 10 inside the outer ring 9. The shim 12 fits tightly with the inner diameter of the outer ring 9, and the upper end of the shim 12 is flat and smooth.

[0020] The specific processing steps for this mold are as follows:

[0021] 1. Prefabricate packing material of a certain length;

[0022] 2. Place the packing filler into the mold in sequence;

[0023] 3. Turn on the air supply to the cylinder, and press the punch against the mold to shape the packing.

[0024] The foregoing description is merely an exemplary embodiment of this disclosure and should not be construed as limiting the scope of this disclosure. Any equivalent changes and modifications made in accordance with the teachings of this disclosure shall still fall within the scope of this disclosure. Those skilled in the art will readily conceive of other embodiments of this disclosure upon considering the specification and the disclosure of practical truth. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not described in this disclosure. The specification and embodiments are considered exemplary only, and the scope and spirit of this disclosure are defined by the claims.

Claims

1. A filler shaping mold, characterized in that, The assembly includes a base (10), an upper plate (2), a cylinder (1), and a mold assembly. The base (10) is a square flat plate structure. An upper plate (2) is spaced above the base (10). A cylinder (1) is vertically fixed in the middle of the upper end of the upper plate (2). The plunger (5) of the cylinder (1) passes through the through hole in the middle of the upper plate (2) and vertically downwards between the upper plate (2) and the base (10). The plunger (5) can move up and down. A punch (6) is fixed at the lower end of the plunger (5). A corresponding upper part of the base (10) is provided below the cylinder (1). The mold assembly includes an outer ring (9), a mandrel (11), and a pressure ring (7). The outer ring (9) is positioned on a base (10). A mandrel (11) is coaxially spaced inside the outer ring (9). The annular gap between the mandrel (11) and the outer ring (9) is used to fill the filler (8) to be processed. A pressure ring (7) is coaxially slidably arranged above the filler (8). The size of the pressure ring (7) matches the annular gap between the mandrel (11) and the outer ring (9). The pressure ring (7) can be embedded in the annular gap between the mandrel (11) and the outer ring (9).

2. The filling material (8) shaping mold according to claim 1, characterized in that, The upper plate (2) and the base (10) are respectively fixed with uprights (4) at the four corners to form a rectangular cubic frame structure.

3. The filling material (8) shaping mold according to claim 1, characterized in that, A gasket (12) is installed on the base (10) inside the outer ring (9). The gasket (12) fits tightly with the inner diameter of the outer ring (9), and the upper end of the gasket (12) is flat and smooth.

4. The filling material (8) shaping mold according to claim 1, characterized in that, The diameter of the punch (6) is larger than the diameter of the pressure ring (7), and the punch (6) and the pressure ring (7) are coaxially aligned vertically.

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