An expanded universal elbow core bead structure

Abstract

The application belongs to the technical field of pipe processing, and provides an expansion universal elbow core bead structure. When the sliding block slides on the second sliding groove between the main bodies, the whole sliding core outer diameter changes because the abutting surfaces of the two are inclined from bottom to top. Because the outer diameter of the sliding core can be scaled, when we perform the elbow operation, the sliding core is pushed to the minimum outer diameter state, the core bead is easily inserted into the stainless steel pipe, and then the elbow is performed. When the elbow is performed, the tension rod is pulled to increase the outer diameter of the expansion sliding core, thereby providing better support force to the inner wall of the stainless steel pipe. The support force provided to the deformation of the inner wall of the stainless steel pipe is better, and the stainless steel pipe is supported and will not wrinkle and other adverse phenomena due to various forces.

Description

Technical Field

[0001] This application belongs to the field of pipe processing technology, and specifically relates to an expansion universal bend core bead structure. Background Technology

[0002] The stainless steel pipe bending process typically uses mandrels for bending. The mandrels are used in conjunction with mandrels and bending dies to effectively prevent deformation of the stainless steel pipes.

[0003] Existing bending mandrels are made of the same material and are integrally formed after heat treatment. During the bending process, we need the bending mandrel to provide sufficient support for the deformation of the inner wall of the stainless steel pipe, preventing the stainless steel pipe from wrinkling or other defects caused by various forces. However, for ease of operation, the mandrel is often smaller than the inner wall size of the stainless steel pipe. Because the mandrel is too small, it cannot provide sufficient support during the bending process, resulting in defects such as wrinkling and elliptical deformation of the stainless steel pipe. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this application is to provide an expansion universal bending core bead structure, which is simple and compact and can provide sufficient support force during the bending process.

[0005] The technical means adopted in this application to solve the above-mentioned technical problems are: This application provides an expandable universal bend core ball structure, comprising: The main body has a cylindrical structure and is provided with two first sliding grooves. The two first sliding grooves pass through the center of the top wall of the main body and extend along the axial direction of the main body. The two first sliding grooves divide the main body into four connecting areas. Four connecting blocks are installed in the connecting area in a one-to-one correspondence. The outer wall of each connecting block is inclined from bottom to top and outward, and the connecting blocks are spaced apart to form a second sliding groove. A pull rod is inserted at the junction of the two first sliding grooves. The pull rod is provided with a locking rod corresponding to the first sliding groove, and the locking rod is inserted into the first sliding groove one by one. Four sliding cores are provided, each with a slider and a docking hole. Each slider is inserted into the second sliding groove in a corresponding manner, and each locking rod is inserted into the docking hole in a corresponding manner. The outer wall of the slider is inclined from bottom to top and outward, and the sliding core is in close contact with the outer wall of the connecting block.

[0006] Preferably, it also includes a universal rod, one end of which is connected to the main body, and one end of which is provided with a universal ball.

[0007] Preferably, it further includes a core rod and a top seat, the core rod being provided with a slot, the top seat being inserted into the slot, and the omnidirectional ball being rotatably mounted between the core rod and the top seat.

[0008] Compared to existing technologies, the slider of the expandable universal bending core ball structure in this application slides on the second groove between the main bodies. Because the contact surfaces of the two surfaces slope upwards, the outer diameter of the entire sliding core changes. Since the outer diameter of the sliding core can be scaled, during bending operations, the sliding core is pushed to its minimum outer diameter state, allowing the core ball to be easily inserted into the stainless steel tube. Then, during bending, the tension rod is pulled to increase the outer diameter of the expanding sliding core, thereby providing better support to the inner wall of the stainless steel tube. This provides better support for the deformation of the inner wall of the stainless steel tube, preventing wrinkling and other defects caused by various forces. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of an angle of the expansion universal bend core bead structure of this application.

[0011] Figure 2 This is an exploded view of the expanded universal bend core bead structure of this application.

[0012] Marker explanation: 1. Main body; 2. Connecting block; 3. Tie rod; 4. Sliding core; 5. Universal rod; 6. Core rod; 7. Top seat; 8. First slide groove; 9. Slider. Detailed Implementation

[0013] To better understand the above-mentioned objectives, features, and advantages of this utility model, it will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0014] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. Similar reference numerals and letters denote similar items in the following figures; therefore, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0015] like Figure 1-2 As shown, this embodiment provides an expansion universal bend core structure, including a main body, four connecting blocks, a pull rod, and four sliding cores. The main body has a cylindrical structure and is provided with two first sliding grooves. The two first sliding grooves pass through the center of the top wall of the main body and extend along the axial direction of the main body, dividing the main body into four connecting areas. The four connecting blocks are installed one-to-one in the connecting areas. The outer wall of the connecting blocks is inclined from bottom to top and outward, and the connecting blocks are spaced apart to form second sliding grooves. The pull rod is inserted at the junction of the two first sliding grooves and is provided with a locking rod corresponding to the first sliding groove. The locking rod is inserted one-to-one in the first sliding groove. The sliding core is provided with a slider and a docking hole. The slider is inserted one-to-one in the second sliding groove, and the locking rod is inserted one-to-one in the docking hole. The outer wall of the slider is inclined from bottom to top and outward, and the sliding core is in close contact with the outer wall of the connecting block.

[0016] In some preferred embodiments of this utility model, a universal rod is also included, one end of which is connected to the main body, and a universal ball is provided at one end of the universal rod.

[0017] In some preferred embodiments of this utility model, a core rod and a top seat are also included. The core rod is provided with a slot, the top seat is inserted into the slot, and the universal ball is rotatably installed between the core rod and the top seat.

[0018] Compared to existing technologies, the slider of the expandable universal bending core ball structure in this application slides on the second groove between the main bodies. Because the contact surfaces of the two surfaces slope upwards, the outer diameter of the entire sliding core changes. Since the outer diameter of the sliding core can be scaled, during bending operations, the sliding core is pushed to its minimum outer diameter state, allowing the core ball to be easily inserted into the stainless steel tube. Then, during bending, the tension rod is pulled to increase the outer diameter of the expanding sliding core, thereby providing better support to the inner wall of the stainless steel tube. This provides better support for the deformation of the inner wall of the stainless steel tube, preventing wrinkling and other defects caused by various forces.

[0019] The above description is merely a specific embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should also be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An expandable universal bend core bead structure, characterized in that, include: The main body has a cylindrical structure and is provided with two first sliding grooves. The two first sliding grooves pass through the center of the top wall of the main body and extend along the axial direction of the main body. The two first sliding grooves divide the main body into four connecting areas. Four connecting blocks are installed in the connecting area in a one-to-one correspondence. The outer wall of each connecting block is inclined from bottom to top and outward, and the connecting blocks are spaced apart to form a second sliding groove. A pull rod is inserted at the junction of the two first sliding grooves. The pull rod is provided with a locking rod corresponding to the first sliding groove, and the locking rod is inserted into the first sliding groove one by one. Four sliding cores are provided, each with a slider and a docking hole. Each slider is inserted into the second sliding groove in a corresponding manner, and each locking rod is inserted into the docking hole in a corresponding manner. The outer wall of the slider is inclined from bottom to top and outward, and the sliding core is in close contact with the outer wall of the connecting block.

2. The expansion universal bend core bead structure according to claim 1, characterized in that, It also includes a universal joint, one end of which is connected to the main body, and one end of the universal joint is provided with a universal ball.

3. The expansion universal bend core bead structure according to claim 2, characterized in that, It also includes a core rod and a top seat, the core rod being provided with a slot, the top seat being inserted into the slot, and the omnidirectional ball being rotatably mounted between the core rod and the top seat.

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