Coaxial positioning device in press fitting process of steel-plastic conversion pipe fitting

Abstract

The utility model discloses a coaxial positioning device in the press fitting process of a steel-plastic conversion pipe fitting, and belongs to the technical field of coaxial positioning devices. The tool comprises a plastic part positioning tool and a steel pipe part positioning tool connected with the plastic part positioning tool, positioning holes are formed in the plastic part positioning tool and the steel pipe part positioning tool, the sizes of the two positioning holes correspond to those of a plastic part and a steel pipe part respectively, and the two positioning holes are coaxially arranged; the plastic part positioning tool and the steel pipe part positioning tool are both of an assembled structure. According to the utility model, improvement is carried out on the basis of a vertical hydraulic machine combined tool, and the coaxial positioning device is arranged based on the PE part and the steel pipe part, so that the problem of coaxiality of products can be effectively solved, and equipment does not need to be purchased again; and the equipment modification cost is reduced to the greatest extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of coaxial positioning devices, and in particular relates to a coaxial positioning device in the press-fitting process of a steel-plastic conversion pipe fitting. Background Art

[0002] Steel-plastic conversion pipe fittings are generally formed by combining three parts: steel pipe, locking ring and PE component through a vertical hydraulic press. During the assembly process, the PE component must first be pressed to the outside of the steel pipe, and then the locking ring must be assembled to the outside of the PE component to ensure the sealing performance of the product connection structure. The press-fit assembly process is a key process in the production process of steel-plastic conversion pipe fittings, which directly determines the effectiveness of the pipe fitting connection structure and the sealing performance of the product in long-term use. However, many manufacturers still have some problems in this process.

[0003] At present, some manufacturers have replaced the vertical hydraulic press with a horizontal hydraulic press, and simultaneously positioned the steel pipe components and the PE components to ensure the relative position of the two components. However, this solution requires redesigning the equipment structure and customizing the equipment, and re-equipping various types of tooling fixtures, which is costly and has a long transformation cycle. The original vertical hydraulic press can only be idle, resulting in equipment waste. Secondly, some manufacturers have designed a vertical press fixture on the vertical hydraulic press. Although this design can ensure the verticality of the fixture, the coaxiality of the PE component and the steel pipe component still relies on the visual sense of the production staff to adjust. When the PE component and the steel pipe component are not coaxial or skewed, even if the fixture is vertical, the coaxiality of the product cannot be guaranteed, which can easily cause assembly failures such as overall skewness of the pipe fittings, seriously affecting product quality, and will also greatly increase the risk of leakage after long-term use of the product. Utility Model Content

[0004] In view of the above problems existing in the prior art, the purpose of the utility model is to provide a coaxial positioning device for the press-fitting process of steel-plastic conversion pipe fittings, which can quickly achieve coaxial positioning of plastic components and steel pipe components.

[0005] The utility model provides the following technical solutions: a coaxial positioning device for the press-fitting process of steel-plastic conversion pipe fittings, comprising a plastic component positioning tool and a steel pipe component positioning tool connected to the plastic component positioning tool, wherein positioning holes are provided on the plastic component positioning tool and the steel pipe component positioning tool, and the sizes of the two positioning holes correspond to the sizes of the plastic component and the steel pipe component, respectively, and are coaxially arranged;

[0006] The plastic component positioning fixture and the steel pipe component positioning fixture are both assembled structures.

[0007] Furthermore, the structures of the plastic component positioning tooling and the steel pipe component positioning tooling are the same, both including a fixed block and a rotating block, the inner sides of which are provided with semicircular holes, the fixed block and the rotating block are relatively arranged and assembled to form a whole, and a complete positioning hole structure is formed inside.

[0008] Furthermore, a gap is left between the positioning hole on the plastic component positioning tool and the side of the plastic component.

[0009] Furthermore, the positioning hole on the steel pipe component positioning tool is tightly matched with the steel pipe component.

[0010] Furthermore, one side of the fixed block is hingedly connected to one side of the rotating block, and the other side is detachably connected.

[0011] Furthermore, a rotating handle is provided on the rotating block.

[0012] Furthermore, the plastic component positioning fixture and the steel pipe component positioning fixture are arranged in parallel up and down, and the sides of the two are fixedly connected by a connecting rod.

[0013] By adopting the above technology, compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model is improved on the basis of the vertical hydraulic press combined tooling, and is based on the setting of the coaxial positioning device of the PE component and the steel pipe component, which can effectively solve the coaxiality problem of the product without the need to re-purchase equipment, thereby reducing the equipment modification cost to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the plastic component positioning tool and the steel pipe component positioning tool of the utility model. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments of the specification. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] On the contrary, the present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the following detailed description of the present invention. Those skilled in the art can fully understand the present invention without the description of these details.

[0019] See also Figure 1-2 A coaxial positioning device for the press-fitting process of steel-plastic conversion pipe fittings includes a plastic component positioning tool A and a steel pipe component positioning tool B, which are arranged in parallel and fixedly connected.

[0020] Specifically, the plastic component positioning fixture A and the steel pipe component positioning fixture B have the same structure, both of which include a semi-disc-shaped fixed block 1 and a rotating block 2, and semi-circular holes are formed on the inner sides of the fixed block 1 and the rotating block 2.

[0021] One side of the fixed block 1 is hingedly connected to one side of the rotating block 2, and the other side is detachably connected by bolts and nuts. The two are assembled to form a complete disc-shaped structure with a positioning hole formed inside.

[0022] The size of the positioning hole on the plastic component positioning tool A matches the outer dimensions of the plastic component C, and a small gap is left between the two to play an adjustable role;

[0023] The size of the positioning hole on the steel pipe component positioning tool B matches the size of the steel pipe component D, and the two are closely matched to play a fixing role.

[0024] A rotating handle 3 is provided on the rotating block 2 to facilitate the rotating operation.

[0025] Specifically, the fixing block 1 on the plastic component positioning fixture A is fixedly connected with the fixing block 1 on the steel pipe component positioning fixture B through a connecting rod and screws.

[0026] In this embodiment, a coaxial positioning device is added on the basis of the vertical hydraulic press. The coaxial positioning device is assembled by a plastic component positioning tool A and a steel pipe component positioning tool B through bolts on the edge of the connecting rod. The two positioning tools are coaxially arranged, so that the plastic component C and the steel pipe component D can be vertically and coaxially arranged in the pressing and assembling process.

[0027] The plastic component positioning fixture A and the steel pipe component positioning fixture B both have a positioning hole in the center, and the diameter of the positioning hole matches the outer diameter of the plastic component C or the steel pipe component D. Both positioning devices are assembled. During the assembly process, the plastic component C and the steel pipe component D are placed in the device respectively, and then the movable block 2 is rotated and closed. After that, the plastic component and the steel pipe component can be assembled normally.

[0028] In order to complete the assembly of the plastic parts normally, there is a small gap between the plastic part C and the plastic part positioning tooling A, and they cannot fit tightly. Plastic parts C and steel pipe parts D of different specifications need to be assembled with different positioning tools.

[0029] During assembly, the plastic component C and the steel pipe component D are first fixed on the same vertical line using a coaxial positioning device, and then a vertical hydraulic press is used to press and assemble them to ensure the overall coaxiality of the steel-plastic conversion pipe fitting.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coaxial positioning device for the press-fitting process of steel-plastic conversion pipe fittings, characterized in that: It comprises a plastic component positioning tool (A) and a steel pipe component positioning tool (B) connected to the plastic component positioning tool (A), wherein positioning holes are provided on the plastic component positioning tool (A) and the steel pipe component positioning tool (B), and the sizes of the two positioning holes correspond to the sizes of the plastic component (C) and the steel pipe component (D), respectively, and are coaxially arranged; The plastic component positioning fixture (A) and the steel pipe component positioning fixture (B) are both assembled structures.

2. The coaxial positioning device for the press-fitting process of steel-plastic conversion pipe fittings according to claim 1 is characterized in that: The plastic component positioning tool (A) and the steel pipe component positioning tool (B) have the same structure, both comprising a fixed block (1) and a rotating block (2), the inner sides of the fixed block (1) and the rotating block (2) are both provided with semicircular holes, the fixed block (1) and the rotating block (2) are arranged opposite to each other and assembled to form a whole, and a complete positioning hole structure is formed inside.

3. The coaxial positioning device for the press-fitting process of steel-plastic conversion pipe fittings according to claim 2 is characterized in that: A gap is left between the positioning hole on the plastic component positioning tool (A) and the side of the plastic component (C).

4. The coaxial positioning device for the press-fitting process of a steel-plastic conversion pipe fitting according to claim 3 is characterized in that: The positioning hole on the steel pipe component positioning tool (B) is tightly matched with the steel pipe component (D).

5. The coaxial positioning device for the press-fitting process of steel-plastic conversion pipe fittings according to claim 2 is characterized in that: One side of the fixed block (1) is hingedly connected to one side of the rotating block (2), and the other side is detachably connected.

6. The coaxial positioning device for the press-fitting process of steel-plastic conversion pipe fittings according to claim 5 is characterized in that: The rotating block (2) is provided with a rotating handle (3).

7. The coaxial positioning device for the press-fitting process of steel-plastic conversion pipe fittings according to claim 1 is characterized in that: The plastic component positioning fixture (A) and the steel pipe component positioning fixture (B) are arranged in parallel up and down, and the sides of the two are fixedly connected by a connecting rod.

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