Flanging device in gas pipe hole

Abstract

The utility model discloses an in-hole flanging device for a gas pipe, which comprises a base provided with a front end angle positioning structure and a rear end position positioning structure; the inner flanging assembly comprises a bottom supporting piece and a vertical moving piece, the vertical position of the vertical moving piece relative to the bottom supporting piece is adjustable, a pressing piece and an inner flanging piece are installed at the bottom of the vertical moving piece, the pressing piece is connected with the vertical moving piece through a flexible piece, and a vertical through hole is formed in the pressing piece; and the guide piece is inserted into the vertical through hole. Precise installation of the pipe fitting is achieved through front angle positioning and rear position positioning, in-hole flanging is achieved through inner flanging renting, the pipe fitting is pressed and fixed through downward pressing of the pressing piece before in-hole flanging, then circumferential fixing of the pipe fitting is achieved, angle change during flanging is prevented, then in-hole flanging operation is carried out, and the pipe fitting is prevented from being damaged. The processing operation is efficient and the quality is guaranteed.

Description

Technical Field

[0001] The utility model specifically relates to a flanging device for the hole of a gas pipe, belonging to the technical field of gas pipe processing, and is used to solve the problem that tearing is likely to occur during the flanging of the inner side of the gas pipe fitting. Background Art

[0002] The gas pipe assembly includes a special-shaped gas pipe and a nozzle installed on the special-shaped gas pipe, and one end of the special-shaped gas pipe is in a blocked state. Generally, the nozzle is installed on the special-shaped gas pipe through a self-sealing thread. The thickness of the special-shaped gas pipe is relatively thin and cannot meet the thread design requirements for the self-sealing installation of the nozzle. At the same time, the nozzle bears a relatively high pressure during operation. If the connection strength fails to meet the requirements, problems such as air leakage or even detachment of the nozzle will occur. Therefore, it is necessary to perform an inner flanging design on the hole for installing the nozzle of the special-shaped gas pipe to meet the design requirements. For example, CN202629434U. However, during the production process of the gas pipe, when performing hole flanging on such pipe fittings, there is no targeted tooling to achieve efficient and quality-guaranteed hole flanging operations. Content of the Utility Model

[0003] In order to solve the above technical problems, the inventor obtained the technical solution of the utility model through practice and summary. The utility model adopts the following technical scheme:

[0004] A flanging device for the hole of a gas pipe, comprising:

[0005] A base, on which a front-end angle positioning structure and a rear-end position positioning structure are provided;

[0006] A flanging assembly, which includes a bottom support member and a vertically moving member. The vertically moving member is vertically adjustable relative to the bottom support member. A pressing member, a flanging member, and a guiding member are installed at the bottom of the vertically moving member. The pressing member is connected to the vertically moving member through a flexible member, and a vertical through hole is provided on the pressing member, and the guiding member is inserted through the vertical through hole.

[0007] Preferably, the rear-end position positioning structure includes a vertical fixing plate, and an installation part is provided at the top of the vertical fixing plate at the top of the pipe fitting. A first positioning rod and a second positioning rod are provided on the installation part.

[0008] Preferably, a fixing seat is installed on the base, and an inner socket rod inserted into the inside of the pipe fitting is installed on the fixing seat. A forming block corresponding to the position of the flanging member is provided on the inner socket rod, and the forming block is vertically and flexibly installed on the inner socket rod.

[0009] Preferably, a sinking groove and a sinking hole arranged opposite to the sinking groove are provided on the inner socket rod, and the sinking hole communicates with the sinking groove. A connecting pin is installed in the sinking hole and the top of the connecting pin extends into the sinking groove. The forming block is vertically slidably fitted in the sinking groove, and a spring is installed in the sinking groove. The spring is sleeved outside the connecting pin and its two ends respectively abut against the forming block and the root of the sinking groove;

[0010] An axial through groove is provided on the side of the inner socket rod, and the axial through groove communicates with the sinking groove through a circumferential groove.

[0011] Preferably, the top of the forming block is consistent with the inner wall structure of the pipe fitting, and a socket hole is provided on the forming block.

[0012] Preferably, the bottom of the inner flanging part is successively provided with a socket part, a transition part and a forming part from bottom to top, and the size of the socket part is smaller than that of the forming part.

[0013] Preferably, a step is provided at the bottom of the transition part for clamping the pipe fitting in cooperation with the end of the socket hole.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model realizes the precise installation of the pipe fitting by adopting front angle positioning and rear position positioning, uses the inner flanging assembly to realize hole flanging, and presses and fixes the pipe fitting by the downward movement of the pressing part before hole flanging, thereby realizing the circumferential fixation of the pipe fitting and preventing the angle from changing during flanging. Secondly, during the hole flanging operation, the processing operation is efficient and the quality is guaranteed.

[0016] 2. In the utility model, two positioning rods are adopted for the rear position positioning. The first positioning rod is used for hole flanging of a part of the gas pipe near the rear end, and the second positioning rod is inserted into the hole processed when the first positioning rod restricts the pipe fitting to realize the processing operation of hole flanging of the other part at the corresponding part of the pipe fitting.

[0017] 3. When the utility model performs hole flanging, the inner socket rod is inserted into the hole to support the inner wall of the pipe fitting. Secondly, the forming block is used in cooperation with the inner flanging part, which can effectively prevent the hole shape from changing when the pipe fitting is flanged, and can also ensure that the flanging is uniform and not prone to cracking problems. After flanging, the inner socket rod is rotated until the flanging enters the axial through groove through the circumferential groove, and the pipe fitting is axially moved to perform the operation on the next set of flanging. After all the flanging operations are completed, the pipe fitting can be axially withdrawn.

[0018] 4. When the utility model performs flanging, the end face of the bottom of the transition part and the end face of the forming block are first used to clamp the edge part of the hole, and then the flanging treatment is carried out after clamping, thereby realizing uniform flanging operation and preventing tearing problems. Description of the Drawings

[0019] Figure 1 This is the overall structural state diagram when processing gas pipe fittings of the present utility model.

[0020] Figure 2 This is the positional relationship diagram of the inner flanging component and the base of the present utility model.

[0021] Figure 3 This is the front view of the overall structure of the present utility model provided with an inner socket rod structure.

[0022] Figure 4 It is Figure 3 The positional distribution diagram of the inner socket rod and the inner flanging part in

[0023] Figure 5 It is Figure 4 The distribution diagram of the forming block, the circumferential groove, and the axial through groove on the inner socket rod in

[0024] Figure 6 It is Figure 5 The distribution diagram of the forming block on the inner socket rod after flanging forming in

[0025] Figure 7 It is the front view of the inner flanging part.

[0026] In the figure: 10, base; 11, front-end angle positioning structure; 12, rear-end position positioning structure; 121, vertical fixing plate; 122, positioning rod one; 123, positioning rod two; 13, fixing seat; 14, inner socket rod; 141, sinking groove; 142, sinking hole; 143, connecting pin; 144, spring; 145, circumferential groove; 146, axial through groove; 15, forming block; 20, inner flanging component; 21, bottom support part; 22, vertical moving part; 23, pressing part; 24, inner flanging part; 241, socket part; 242, forming part; 243, gradual change part; 25, guiding part; 26, flexible part. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0029] Embodiment 1

[0030] As shown Figures 1 to 2 in the figure, a flanging device for the inner hole of a gas pipe includes a base 10 and an inner flanging assembly 20.

[0031] A front-end angle positioning structure 11 and a rear-end position positioning structure 12 are provided on the base 10. Among them, the front-end angle positioning structure 11 is a support block and a horizontal rod arranged parallel to the installation direction of the gas pipe fitting, so as to ensure the angle of the gas pipe fitting. The rear-end position positioning structure 12 includes a vertical fixing plate 121. The top of the vertical fixing plate 121 is provided with an installation part located at the top of the pipe fitting. A positioning rod 122 and a positioning rod 123 are arranged on the installation part. Both of them are jacking screws or pins vertically installed on the installation part and extending downward from the bottom of the installation part. The rear end of the gas pipe fitting is abutted and restricted by the positioning rod 122, so as to accurately restrict the position of the gas pipe fitting, ensure that the inner flanging part 24 is aligned with the hole, and further ensure that the flanging accuracy is not prone to problems such as cracking caused by position deviation.

[0032] The inner flanging assembly 20 includes a bottom support 21 and a vertically movable member 22. The vertical position of the vertically movable member 22 is adjustable relative to the bottom support 21. A pressing member 23, an inner flanging member 24, and a guiding member 25 are installed at the bottom of the vertically movable member 22. The pressing member 23 is connected to the vertically movable member 22 through a flexible member 26 (spring). The pressing member 23 is provided with a vertical through hole, and the guiding member 25 is inserted into the vertical through hole.

[0033] The gas pipe fitting is installed on the bottom support 21. The bottom support 21 is provided with a U-shaped installation groove for installing the gas pipe fitting. The vertically movable member 22 moves downward, driving the pressing member 23, the guiding member 25, and the inner flanging member 24 thereon to move downward, so as to realize the downward pressing of the pressing member 23 (an arc-shaped groove is provided at the bottom to match the shape of the gas pipe fitting) on the top of the gas pipe fitting to restrict the position movement and axial deviation of the gas pipe fitting during flanging. The inner flanging member 24 slides vertically relative to the pressing member 23, and the pressing member 23 is provided with a through hole for the inner flanging member 24 to penetrate.

[0034] Among them, three inner flanging members 24 are arranged in parallel, and the installation holes of the gas pipe fitting are flanged twice to realize the inner hole flanging operation of the gas pipe fitting.

[0035] Embodiment 2

[0036] As shown Figures 3 to 7 in the figure, the following improvements are made on the basis of the above embodiment:

[0037] A fixing base 13 is installed on the base 10, and an inner socket rod 14 inserted into the interior of the pipe fitting is installed on the fixing base 13. A forming block 15 corresponding to the position of the inner flanging part 24 is arranged on the inner socket rod 14, and the forming block 15 is vertically and flexibly installed on the inner socket rod 14.

[0038] A sunk groove 141 and a sunk hole 142 arranged opposite to the sunk groove 141 are provided on the inner socket rod 14, and the sunk hole 142 communicates with the sunk groove 141. A connecting pin 143 is installed in the sunk hole 142 and the top of the connecting pin 143 extends into the sunk groove 141. The forming block 15 is vertically slidably fitted in the sunk groove 141, and a spring 144 is installed in the sunk groove 141. The spring 144 is sleeved outside the connecting pin 143 and its two ends respectively abut against the forming block 15 and the root of the sunk groove 141.

[0039] An axial through groove 146 is provided on the side of the inner socket rod 14, and the axial through groove 146 communicates with the sunk groove 141 through a circumferential groove 145.

[0040] The top of the forming block 15 is consistent with the inner wall structure of the pipe fitting, and a socket hole is provided on the forming block 15.

[0041] As Figure 7 shown, a socket part 241, a gradual change part 243 and a forming part 242 are sequentially arranged from bottom to top at the bottom of the inner flanging part 24. The size of the socket part 241 is smaller than that of the forming part 242. A step is provided at the bottom of the gradual change part 243 for clamping the pipe fitting in cooperation with the end of the socket hole.

[0042] During implementation, as Figure 1 shown, when performing inner flanging operation on a set of holes on the right side, the gas pipe fitting is axially socketed outside the inner socket rod 14, and it is ensured that the forming block 15 corresponds to the position of the inner flanging part 24. The end is restricted by a positioning rod 122. The vertical moving part 22 descends, and the gas pipe fitting is pressed by a pressing part 23. The socket part 241 of the inner flanging part 24 enters the hole and clamps the hole edge by using the step in cooperation with the top of the forming block 15. The inner flanging part 24 descends and uses the gradual change part 243 and the forming part 242 to perform inner flanging processing operation on the hole.

[0043] When performing inner flanging on a set of holes on the axial left side, as Figure 5 and Figure 6As shown in the figure, rotate the inner socket rod 14 to the right, and the flanging enters the axial through groove from the circumferential groove 145. Adjust the heights of the first positioning rod 122 and the second positioning rod 123, and axially move the gas pipe fitting to the right, so that the two are respectively fitted into the holes that have completed the processing operation. When the positions correspond, rotate the inner socket rod 14 in the reverse direction by the same angle, and use the inner flanging part 24 to perform the flanging operation on the holes again. After the flanging is completed, rotate the inner socket rod 14 again so that all the flangings enter the axial through groove 146, axially extract the gas pipe fitting, and rotate the inner socket rod 14 in the reverse direction to the initial state.

[0044] As described above, it is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The substitution may be the substitution of some structures, devices, and method steps, or a complete technical solution. Any equivalent substitution or change made according to the technical solution of the present invention and its inventive concept should be covered within the protection scope of the present invention.

Claims

1. A flanging device for the inner hole of a gas pipe, characterized in that Comprising: A base (10) with a front-end angle positioning structure (11) and a rear-end position positioning structure (12) provided thereon; An inward flanging component (20) including a bottom support member (21) and a vertically movable member (22). The vertically movable member (22) is vertically position-adjustable relative to the bottom support member (21). At the bottom of the vertically movable member (22), a pressing member (23), an inward flanging member (24), and a guiding member (25) are installed. The pressing member (23) is connected to the vertically movable member (22) through a flexible member (26). The pressing member (23) is provided with a vertical through hole, and the guiding member (25) is inserted into the vertical through hole.

2. The flanging device for the inner hole of a gas pipe according to claim 1, characterized in that, The rear-end position positioning structure (12) includes a vertical fixing plate (121). At the top of the vertical fixing plate (121), there is an installation part located at the top of the pipe fitting, and a first positioning rod (122) and a second positioning rod (123) are provided on the installation part.

3. The flanging device for the inner hole of the gas pipe according to claim 1, wherein A fixing seat (13) is installed on the base (10), and an inner socket rod (14) inserted into the interior of the pipe fitting is installed on the fixing seat (13). A forming block (15) corresponding to the position of the inward flanging member (24) is provided on the inner socket rod (14). The forming block (15) is vertically and flexibly installed on the inner socket rod (14).

4. The flanging device for the inner hole of a gas pipe according to claim 3, characterized in that, A sinking groove (141) and a sinking hole (142) arranged opposite to the sinking groove (141) are provided on the inner socket rod (14), and the sinking hole (142) communicates with the sinking groove (141). A connecting pin (143) is installed in the sinking hole (142), and the top of the connecting pin (143) extends into the sinking groove (141). The forming block (15) is vertically slidably fitted in the sinking groove (141), and a spring (144) is installed in the sinking groove (141). The spring (144) is sleeved on the outer side of the connecting pin (143), and its two ends respectively abut against the forming block (15) and the root of the sinking groove (141). An axial through groove (146) is provided on the side of the inner socket rod (14), and the axial through groove (146) communicates with the sinking groove (141) through a circumferential groove (145).

5. The flanging device for the inner hole of a gas pipe according to claim 3, characterized in that, The top of the forming block (15) has the same structure as the inner wall of the pipe fitting, and a socket hole is provided on the forming block (15).

6. The flanging device for the inner hole of a gas pipe according to claim 5, characterized in that At the bottom of the inward flanging member (24), a socket part (241), a tapered part (243), and a forming part (242) are sequentially arranged from bottom to top. The size of the socket part (241) is smaller than that of the forming part (242).

7. The flanging device for the inner hole of the gas pipe according to claim 6, characterized in that, A step is provided at the bottom of the tapered part (243) for clamping the pipe fitting in cooperation with the end of the socket hole.

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