Device for variable-diameter splicing

Abstract

The utility model relates to the technical field of reducing production, and aims to solve the technical problems of poor welding quality, low efficiency and high labor cost. In order to solve the technical problem, the utility model provides the device for reducing splicing. The utility model comprises: a base frame; the welding supporting assembly comprises a rotary disc and a variable-diameter die. The turntable is rotationally connected with the base frame, the shape of the reducing mold is consistent with the flanged collar, the reducing section and the interface in sequence from bottom to top, the reducing mold is connected to the top of the turntable, and the projection of the turntable on the horizontal plane is larger than that of the reducing mold on the horizontal plane; the downward pressing assembly comprises an up-down lifting part and a downward pressing part; the up-down lifting part is movably connected with the base frame, and the pressing part is rotationally connected to the bottom end of the up-down lifting part; and the up-down lifting part drives the pressing piece to lift up and down. The spot welding quality is guaranteed, the efficiency is improved, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of diameter-changing production, in particular to a device for diameter-changing splicing. Background Art

[0002] The reducer is made by welding together a flanged collar, a reducer section, and an interface. Existing technology involves manual splicing and spot welding at the joints. However, this approach presents the following issues: large deviations in the spot welds lead to poor welding quality, low efficiency, and high labor costs. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the above-mentioned problems existing in the prior art.

[0004] In order to solve the above technical problems, the utility model provides a device for variable diameter splicing, comprising:

[0005] Base frame;

[0006] The welding support assembly includes a turntable and a reducing die. The turntable is rotatably connected to the base frame. The shape of the reducing die is consistent with the flange collar, the reducing section, and the interface from bottom to top. The reducing die is connected to the top of the turntable. The projection of the turntable on the horizontal plane is larger than the projection of the reducing die on the horizontal plane.

[0007] The pressing assembly includes upper and lower lifting parts and a pressing part; the upper and lower lifting parts are movably connected to the base frame, and the pressing part is rotatably connected to the bottom end of the upper and lower lifting parts; the upper and lower lifting parts drive the pressing part to move up and down.

[0008] In one embodiment of the present invention, the lower surface of the turntable does not contact the base frame.

[0009] In one embodiment of the present invention, the downward pressure assembly also includes an elastic connecting member, which is connected between the upper and lower lifting components and the downward pressure component; the elastic connecting member includes a telescopic rod and an elastic member, and the upper and lower ends of the telescopic rod are respectively provided with a first head and a second head, the elastic member is sleeved on the telescopic rod and the two ends are respectively connected to the bottom end and the second head of the upper and lower lifting components; a sliding groove is provided at the bottom of the upper and lower lifting components, and the first head is slidably connected in the sliding groove.

[0010] In one embodiment of the present invention, a handle is provided on the outer wall of the turntable.

[0011] In one embodiment of the present invention, a threaded hole is provided on the base frame, and the axis of the threaded hole extends up and down; the upper and lower lifting components include an upper connecting shaft with an external thread, the external thread of the upper connecting shaft is connected to the threaded hole, and the bottom end of the upper connecting shaft is rotatably connected to the lower pressure piece.

[0012] In one embodiment of the present invention, the external thread is provided at the top end of the upper connecting shaft, and other positions of the upper connecting shaft are smooth surfaces.

[0013] In one embodiment of the present invention, the up and down lifting component further includes a handle connected to the top end of the upper connecting shaft.

[0014] In one embodiment of the present invention, the welding support assembly further includes a lower connecting shaft; the turntable and the variable diameter mold are respectively threadedly connected to the lower connecting shaft; and the lower end of the lower connecting shaft is rotatably connected to the base frame via a bearing.

[0015] In one embodiment of the present invention, the welding support assembly further includes a gasket, which is located between the base frame and the turntable, and a gap is formed between an upper end surface of the gasket and a lower end surface of the turntable.

[0016] In one embodiment of the present invention, the base frame includes a chassis, a plurality of portal frames and a connecting piece; the chassis is arranged horizontally, and the portal frames are connected to the top of the chassis; the connecting piece is used to connect the plurality of portal frames.

[0017] The above technical solution of the utility model has the following advantages compared with the prior art:

[0018] The device for variable diameter splicing described in the utility model is provided with a variable diameter die, and the material (with a flange collar, a variable diameter section and an interface) is sequentially sleeved on the variable diameter die, and then the upper and lower lifting components drive the lower pressing component to move downward to press the material, so that the flange collar, the variable diameter section and the interface can be coaxial and aligned, and no displacement occurs during the welding process. Finally, the material is rotated by rotating the turntable, so that the operator can spot weld the splicing points of the material in the circumferential direction at one position, thereby ensuring the spot welding quality, improving efficiency and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 This is a structural diagram of a device for variable diameter splicing in a preferred embodiment of the present utility model;

[0021] Figure 2 yes Figure 1 A front view of a device for variable diameter splicing;

[0022] Figure 3 yes Figure 2 sectional view of

[0023] Figure 4This is a structural diagram of a material being sleeved on a device for variable diameter splicing in a preferred embodiment of the present utility model;

[0024] Figure 5 yes Figure 4 The main view;

[0025] Figure 6 yes Figure 5 sectional view of

[0026] Description of the reference numerals in the specification: 100, base frame; 110, chassis; 111, mounting groove; 120, door frame; 130, connecting piece; 131, threaded hole;

[0027] 200, welding support assembly; 210, turntable; 211, handle; 220, reducing die; 230, lower connecting shaft; 240, gasket;

[0028] 300, pressing assembly; 310, pressing member; 320, telescopic rod; 321, first head; 322, second head; 330, elastic member; 340, upper connecting shaft; 341, external thread; 342, slide groove; 350, handle;

[0029] 400, with flange collar;

[0030] 500, reducing section;

[0031] 600. Interface. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0033] Reference Figures 1 to 6 As shown, an embodiment of the present invention provides a device for variable diameter splicing, comprising:

[0034] Base frame 100;

[0035] The welding support assembly 200 includes a turntable 210 and a reducing die 220. The turntable 210 is rotatably connected to the base frame 100. The reducing die 220 has an appearance that, from bottom to top, corresponds to the flanged collar 400, the reducing section 500, and the interface 600. Specifically, the reducing die 220 includes, from bottom to top, a first contouring portion, a second contouring portion, and a third contouring portion. The first contouring portion corresponds to the flanged collar 400, the second contouring portion corresponds to the reducing section 500, and the third contouring portion corresponds to the interface 600. The reducing die 220 is connected to the top of the turntable 210. The projection of the turntable 210 on the horizontal plane is larger than the projection of the reducing die 220 on the horizontal plane. This allows the turntable 210 to support the material (the flanged collar 400, the reducing section 500, and the interface 600) placed on the reducing die 220 and ensure that the lower end surface of the flanged collar 400 is flush with the lower end surface of the reducing die 220. In some embodiments, after the material is placed on the reducing die 220, the upper end surface of the interface 600 is higher than the upper end surface of the reducing die 220, or the upper end surface of the interface 600 is flush with the upper end surface of the reducing die 220, thereby ensuring that the lower pressing member 310 contacts the interface 600 rather than the upper end surface of the reducing die 220.

[0036] The pressing assembly 300 includes upper and lower lifting components and a pressing component 310; the upper and lower lifting components are movably connected to the base frame 100, and the pressing component 310 is rotatably connected to the bottom end of the upper and lower lifting components; the upper and lower lifting components drive the pressing component 310 to move up and down, and are used to compress the interface 600 provided on the variable diameter mold 220.

[0037] Specifically, this embodiment is provided with a reducing die 220, and the material (the flanged collar 400, the reducing section 500 and the interface 600) is sequentially sleeved on the reducing die 220, and then the upper and lower lifting components drive the lower pressing member 310 to move downward to compact the material, so that the flanged collar 400, the reducing section 500 and the interface 600 can be coaxial and aligned, and no displacement occurs during the welding process. Finally, the material is rotated by rotating the turntable 210, so that the operator can spot weld the splicing points of the material in the circumferential direction at one position, thereby ensuring the spot welding quality, improving efficiency and reducing labor costs.

[0038] Furthermore, the base frame 100 includes a chassis 110, a plurality of portal frames 120, and a connector 130. The chassis 110 is horizontally arranged, and the portal frames 120 are connected to the top of the chassis 110. The connector 130 is used to connect the plurality of portal frames 120. Specifically, the structure of the base frame 100 in this embodiment is stable and reliable.

[0039] Further, the lower surface of the rotating disk 210 does not contact the bottom plate 110 of the base frame 100. Specifically, when the rotating disk 210 rotates, it will not contact the base frame 100 to generate friction, thereby improving the service life of the device.

[0040] Furthermore, the down-pressing assembly 300 also includes an elastic connector connected between the upper and lower lifting components and the down-pressing component 310. The elastic connector includes a telescopic rod 320 and an elastic member 330. The telescopic rod 320 has a first head 321 and a second head 322 at its upper and lower ends, respectively. The elastic member 330 is sleeved onto the telescopic rod 320, and its ends are respectively connected to the bottom end and the second head 322 of an upper connecting shaft 340 (described below). A slide groove 342 is provided at the bottom of the upper connecting shaft 340 (described below), into which the first head 321 slides. Specifically, the elastic connector provided between the upper and lower lifting components and the down-pressing component 310 in this embodiment reduces damage to the material (the flanged collar 400, the reducing section 500, and the interface 600) when the down-pressing component 310 compresses it. In some embodiments, the elastic member 330 is a spring.

[0041] Furthermore, a handle 211 is provided on the outer wall of the turntable 210. Specifically, this embodiment facilitates the control of the rotation of the turntable 210 through the handle 211, making the operation more convenient.

[0042] Furthermore, the connecting member 130 of the base frame 100 is provided with a threaded hole 131, the axis of which extends vertically. The vertical lifting component includes an upper connecting shaft 340 with external threads 341. The external threads 341 of the upper connecting shaft 340 are connected to the threaded hole 131. The bottom end of the upper connecting shaft 340 is rotatably connected to the lower pressure member 310 via a bearing. Specifically, in this embodiment, the lower pressure member 310 can be moved up and down by tightening or loosening the upper connecting shaft 340, which is convenient for operation.

[0043] Furthermore, the external thread 341 is provided at the top position of the upper connecting shaft 340, and the other positions of the upper connecting shaft 340 are smooth surfaces. When welding is required, the upper connecting shaft 340 is loosened upwards until the external thread 341 of the upper connecting shaft 340 is disengaged from the internal threaded hole 131, and then the upper connecting shaft 340 is pulled upwards so that the lower pressing piece 310 is away from the upper end face of the variable diameter die 220. At this time, it is convenient to put the material on the variable diameter die 220, and then the upper connecting shaft 340 is allowed to fall until the lower end of the external thread 341 enters the internal threaded hole 131, and then the upper connecting shaft 340 is tightened until the lower pressing piece 310 contacts the upper end face of the interface 600. Specifically, the length of the external thread 341 screwed into the threaded hole 131 is reduced when lifting up and down, thereby saving time.

[0044] Furthermore, the vertical lifting component includes a handle 350 connected to the top of the upper connecting shaft 340. The handle 350 is fixedly connected to the top of the upper connecting shaft 340. In some possible embodiments, the outer wall of the handle 350 is provided with a protrusion, and the upper connecting shaft 340 is provided with a corresponding groove that mates with the protrusion. The handle 350 is then welded to the upper connecting shaft 340. Specifically, in this embodiment, the upper connecting shaft 340 is rotated by rotating the handle 350, which is convenient and labor-saving to operate.

[0045] The welding support assembly 200 further includes a lower connecting shaft 230; the turntable 210 and the reducing die 220 are respectively threadedly connected to the lower connecting shaft 230; the lower end of the lower connecting shaft 230 is rotatably connected to the chassis 110 of the base frame 100 via a bearing. In some possible embodiments, the chassis 110 is provided with a mounting slot 111, in which a bearing is disposed, and the bottom end of the lower connecting shaft 230 is connected to the inner race of the bearing. Specifically, the reducing die 220 and the turntable 210 of this embodiment can be replaced to accommodate splicing with different sizes of reducing diameters.

[0046] Furthermore, the welding support assembly 200 further includes a gasket 240, which is sleeved on the lower connecting shaft 230 and positioned between the base frame 100 and the turntable 210. A gap is defined between the upper end surface of the gasket 240 and the lower end surface of the turntable 210. Specifically, the gasket 240 in this embodiment can prevent dust and debris from entering the mounting groove 111 and damaging the bearing therein.

[0047] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A device for variable diameter splicing, characterized by: include: Base frame; The welding support assembly includes a turntable and a reducing die; the turntable is rotatably connected to the base frame; the reducing die has an appearance that is consistent with the flanged collar, the reducing section, and the interface from bottom to top; the reducing die is connected to the top of the turntable, and the projection of the turntable on the horizontal plane is larger than the projection of the reducing die on the horizontal plane; The pressing assembly includes an upper and lower lifting component and a pressing component; the upper and lower lifting component is movably connected to the base frame, and the pressing component is rotatably connected to the bottom end of the upper and lower lifting component; the upper and lower lifting component drives the pressing component to move up and down.

2. The device for variable diameter splicing according to claim 1, characterized in that: The lower surface of the turntable does not contact the base frame.

3. The device for variable diameter splicing according to claim 1, characterized in that: The downward pressing assembly also includes an elastic connecting piece, which is connected between the upper and lower lifting parts and the downward pressing piece; the elastic connecting piece includes a telescopic rod and an elastic piece, and the upper and lower ends of the telescopic rod are respectively provided with a first head and a second head, and the elastic piece is sleeved on the telescopic rod and the two ends are respectively connected to the bottom end of the upper and lower lifting parts and the second head; the bottom of the upper and lower lifting parts is provided with a sliding groove, and the first head is slidably connected to the sliding groove.

4. The device for variable diameter splicing according to claim 1, characterized in that: The outer wall of the turntable is provided with a handle.

5. The device for variable diameter splicing according to claim 1, characterized in that: The base frame is provided with a threaded hole, the axis of the threaded hole extends up and down; the up and down lifting components include an upper connecting shaft with an external thread, the external thread of the upper connecting shaft is connected to the threaded hole, and the bottom end of the upper connecting shaft is rotatably connected to the lower pressure piece.

6. The device for variable diameter splicing according to claim 5, characterized in that: The external thread is arranged at the top end of the upper connecting shaft, and other positions of the upper connecting shaft are smooth surfaces.

7. The device for variable diameter splicing according to claim 5, characterized in that: The up and down lifting component also includes a handle connected to the top end of the upper connecting shaft.

8. The device for variable diameter splicing according to claim 1, characterized in that: The welding support assembly also includes a lower connecting shaft; the turntable and the variable diameter mold are respectively threadedly connected to the lower connecting shaft; the lower end of the lower connecting shaft is rotatably connected to the base frame through a bearing.

9. The device for variable diameter splicing according to claim 1, characterized in that: The welding support assembly further includes a gasket, which is located between the base frame and the turntable, and a gap is provided between an upper end surface of the gasket and a lower end surface of the turntable.

10. The device for variable diameter splicing according to claim 1, characterized in that: The base frame includes a chassis, a plurality of portal frames and a connecting piece; the chassis is arranged horizontally, and the portal frames are connected to the top of the chassis; the connecting piece is used to connect the plurality of portal frames.

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