Dry bag type isostatic pressing thin-walled tube

Abstract

The utility model discloses a dry bag type isostatic pressing thin-walled tube, and relates to the technical field of thin-walled tubes. Comprising a pipe body, a core rod fixing pad is detachably arranged in an inner cavity of the pipe body, a core rod is fixedly installed at the bottom end of the core rod fixing pad, the surface of the bottom end of the core rod is sleeved with a metal gasket matched with the inner cavity of the pipe body, a polyurethane gasket is fixedly installed at the bottom end of the metal gasket, and the core rod penetrates through the metal gasket and the polyurethane gasket. Steel rings are fixedly mounted at two ends of the outer wall of the pipe body; the metal gasket and the polyurethane gasket which are sleeved on the surface of the bottom end of the core rod can prevent the die cavity from being deformed due to extrusion by utilizing the rigidity of the metal ring and prevent the head of the die from being exploded by utilizing the elasticity of the polyurethane ring during pressing, the assembly method is simple and convenient to operate, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of thin-walled tubes, in particular to a dry bag type isostatically pressed thin-walled tube. Background Art

[0002] When a dry bag press is used to produce thin-walled tubes, the tube wall thickness is relatively thin, the powder filling amount is relatively small, and the filling at the bottom of the mold is even lower. The core rod is directly inserted and then loaded and pressed. Due to the filling problem at the bottom of the mold, the reaction forces of various parts are inconsistent and deformed, and the cracks on the head of the pressed billet increase significantly, affecting the product quality, production efficiency and material loss. In view of the above problems, a dry bag isostatically pressed thin-walled tube is proposed to solve the above problems. Utility Model Content

[0003] In order to solve the above problems, the utility model aims to provide a dry bag type isostatically pressed thin-walled tube.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solution: a dry bag isostatically pressed thin-walled tube, comprising a tube body, the inner cavity of the tube body is detachably provided with a core rod fixing pad, the bottom end of the core rod fixing pad is fixedly installed with a core rod, the surface of the bottom end of the core rod is sleeved with a metal gasket adapted to the inner cavity of the tube body, the bottom end of the metal gasket is fixedly installed with a polyurethane gasket, and the core rod passes through the metal gasket and the polyurethane gasket.

[0005] Preferably, a polyurethane film is provided on the surface of the tube body, an upper end cover is provided on the top end of the tube body, and a base is fixedly installed on the bottom end of the tube body.

[0006] Preferably, steel rings are fixedly mounted on both ends of the outer wall of the tube body.

[0007] Compared with the prior art, the beneficial effects of the utility model are:

[0008] The metal washer and the polyurethane washer are sleeved on the bottom surface of the core rod. When pressing, the rigidity of the metal ring is used to prevent the mold cavity from being deformed due to extrusion. At the same time, the elasticity of the polyurethane ring is used to prevent the mold head from bursting. The assembly method is easy to operate and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 It is a cross-sectional view of the utility model.

[0012] In the figure: 1. tube body; 2. upper end cover; 3. base; 4. polyurethane membrane; 5. core rod fixing pad; 6. core rod; 7. metal washer; 8. polyurethane washer; 9. steel ring. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] Example: Figure 1-Figure 2 As shown, the utility model provides a dry bag type isostatically pressed thin-walled tube, comprising a tube body 1, the inner cavity of the tube body 1 is detachably provided with a core rod fixing pad 5, the bottom end of the core rod fixing pad 5 is fixedly installed with a core rod 6, the core rod 6 can be removed or installed in the inner cavity of the tube body 1, the surface of the bottom end of the core rod 6 is sleeved with a metal gasket 7 adapted to the inner cavity of the tube body 1, the bottom end of the metal gasket 7 is fixedly installed with a polyurethane gasket 8, the core rod 6 penetrates the metal gasket 7 and the polyurethane gasket 8, when pressing, the metal gasket 7 and the polyurethane gasket 8 sleeved on the bottom end surface of the core rod 6 utilize the rigidity of the metal ring to prevent the mold cavity from being deformed due to extrusion, and at the same time utilize the elasticity of the polyurethane ring to prevent the mold head from bursting.

[0015] A polyurethane film 4 is provided on the surface of the tube body 1 , an upper end cover 2 is provided at the top of the tube body 1 , a base 3 is fixedly installed at the bottom end of the tube body 1 , and steel rings 9 are fixedly installed at both ends of the outer wall of the tube body 1 .

[0016] The steel ring 9 strengthens the toughness of both ends of the tube body 1, and prevents the tube body 1 from bursting or rupturing due to excessive pressure at the ends during the pressing process.

[0017] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A dry bag isostatically pressed thin-walled tube, comprising a tube body (1), characterized in that: The inner cavity of the tube body (1) is detachably provided with a core rod fixing pad (5), the bottom end of which is fixedly provided with a core rod (6), the surface of the bottom end of the core rod (6) is sleeved with a metal washer (7) adapted to the inner cavity of the tube body (1), the bottom end of the metal washer (7) is fixedly provided with a polyurethane washer (8), and the core rod (6) passes through the metal washer (7) and the polyurethane washer (8).

2. A dry bag isostatically pressed thin-walled tube as claimed in claim 1, characterized in that: The surface of the tube body (1) is provided with a polyurethane film (4), the top end of the tube body (1) is provided with an upper end cover (2), and the bottom end of the tube body (1) is fixedly mounted with a base (3).

3. A dry bag isostatically pressed thin-walled tube as claimed in claim 2, characterized in that: Steel rings (9) are fixedly mounted on both ends of the outer wall of the tube body (1).

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