Anti-extrusion steel-plastic pipe injection mold

Abstract

The utility model discloses an anti-extrusion steel-plastic pipe injection mold which comprises a forming pipe, a flange is arranged at the left end of the forming pipe, a first sealing ring is arranged at the right end of the forming pipe, the left end of the forming pipe is fixedly connected with a sealing plate, a through hole is formed in the middle of the sealing plate, a bearing is fixedly arranged at the through hole of the sealing plate in a sleeved mode, and the first sealing ring is arranged at the right end of the forming pipe. The bearing is a sealed bearing, the inner side of the bearing is fixedly connected with a second sealing ring, the left side of the second sealing ring extends out of the through hole and is fixedly connected with the flange, the flange and the sealing ring can be fixed through the sealing plate and the bearing, and when the flange drives the steel pipe to rotate, the sealing ring and the flange cannot generate friction; therefore, the phenomenon that the sealing ring is abraded is avoided, loss is reduced, and the service life of the sealing ring is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel-plastic pipe injection molding, in particular to an anti-extrusion steel-plastic pipe injection molding die. Background Art

[0002] The existing anti-extrusion steel-plastic pipe injection mold mainly uses sealing rings to improve the sealing effect at both ends of the pipe during injection molding. For example, patent application No. 201720146322.6 discloses an anti-extrusion steel-plastic pipe injection mold, including a molding pipe, a molding pipe body, a heating layer and an extrusion rod, etc. The steel pipe continuously rotates during the injection molding process, effectively ensuring that the plastic can be evenly coated on the inside and outside of the steel pipe, and has the advantages of smooth and uniform coating; the structure of the extrusion rod of the utility model can make the inside and outside of the steel pipe be coated and formed at one time, effectively improving the injection molding efficiency; the sealing rings at both ends of the molding pipe have the advantage of preventing the plastic from being extruded, avoiding material waste and cleaning trouble.

[0003] However, when the steel pipe is injected into the forming tube, it is in a rotating state, and friction will occur between the flange and the sealing ring, which will cause the sealing ring to wear faster and suffer serious loss, resulting in a short life. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides an anti-extrusion steel-plastic pipe injection mold, which can fix the flange and the sealing ring through a sealing plate and a bearing. When the flange drives the steel pipe to rotate, no friction will be generated between the sealing ring and the flange, thereby avoiding the wear of the sealing ring, reducing the loss and increasing the service life of the sealing ring.

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

[0006] An anti-extrusion steel-plastic tube injection mold comprises a molding tube, a flange is provided at the left end of the molding tube, a first sealing ring is provided at the right end of the molding tube, a sealing plate is fixedly connected to the left end of the molding tube, a through hole is opened in the middle of the sealing plate, a bearing is fixedly sleeved at the through hole of the sealing plate, the bearing is a sealed bearing, a second sealing ring is fixedly connected to the inner side of the bearing, a through hole extends from the left side of the second sealing ring and is fixedly connected to the flange.

[0007] Compared with the prior art, the beneficial effect of the utility model is that the flange and the sealing ring can be fixed through the sealing plate and the bearing. When the flange drives the steel pipe to rotate, no friction will be generated between the sealing ring and the flange, thereby avoiding the phenomenon of wear of the sealing ring, reducing loss and increasing the service life of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the utility model;

[0009] Figure 2 This is a schematic diagram of the bearing structure of the utility model.

[0010] In the figure: 1. forming tube; 2. flange; 3. first sealing ring; 4. sealing plate; 5. bearing; 6. second sealing ring. DETAILED DESCRIPTION

[0011] 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 them. 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.

[0012] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Example

[0013] See attached Figure 1-2 As shown, an anti-extrusion steel-plastic tube injection mold includes a molding tube 1, a flange 2 is provided at the left end of the molding tube 1, a first sealing ring 3 is provided at the right end of the molding tube 1, a sealing plate 4 is fixedly connected to the left end of the molding tube 1, a through hole is opened in the middle of the sealing plate 4, a bearing 5 is fixedly sleeved at the through hole of the sealing plate 4, the bearing 5 is a sealed bearing, a second sealing ring 6 is fixedly connected to the inner side of the bearing 5, a through hole extends from the left side of the second sealing ring 6 and is fixedly connected to the flange 2.

[0014] Working principle: In the utility model, the steel pipe is inserted from the right end of the forming tube 1 and then connected to the flange 2. The motor is used to drive the flange 2 to drive the steel pipe to rotate, and the extrusion rod is inserted into the forming tube 1 from the right side, and the injection molding is performed while continuously pushing it in. During this process, the first sealing ring 3 and the second sealing ring 6 leak liquid, and the second sealing ring 6 rotates synchronously with the flange 2, and no friction is generated between the two.

[0015] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0016] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An anti-extrusion steel-plastic tube injection mold, comprising a molding tube (1), wherein the left end of the molding tube (1) is provided with a flange (2), characterized in that: A first sealing ring (3) is arranged at the right end of the forming tube (1), and a sealing plate (4) is fixedly connected to the left end of the forming tube (1). A through hole is opened in the middle of the sealing plate (4), and a bearing (5) is fixedly sleeved at the through hole of the sealing plate (4). The bearing (5) is a sealed bearing, and a second sealing ring (6) is fixedly connected to the inner side of the bearing (5). A through hole extends from the left side of the second sealing ring (6) and is fixedly connected to the flange (2).

Images