Flange tooling fixture

Abstract

The utility model discloses a flange plate frock clamp, including base and base support board, base support board cover is located on the base, the base support board is fixed with the central sleeve, is provided with the cylinder in the base, and the push -out end of cylinder passes through the base support board and is connected with the central wedge, still be provided with side wedge in the central sleeve, and the inclined surface contact of side wedge and central wedge, one side of side wedge is connected with the tight side board through the short connection column, still be provided with the sliding bar hole on the base support board, and the sliding bar hole is slidably provided with the guide sliding bar, be provided with the drive mechanism for driving the linear motion of guide sliding bar in the base, the upper end of guide sliding bar is provided with the stepped clamping column. The utility model discloses a flange plate frock clamp, so that can be to different types of flange plate clamping and facilitate the centering welding of flange plate and pipeline.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically to a flange tooling fixture. Background Technology

[0002] A flange, often simply called a flange, is a general term that usually refers to a disc-shaped metal body with several holes around its perimeter for connecting pipes or other components. During the maintenance of industrial equipment, it is often necessary to weld flanges to pipes or to perform operations such as grinding, punching, or enlarging holes in the flanges. In these processes, the flanges need to be clamped, but because flanges are round, they are not easy to clamp.

[0003] Chinese Patent Publication No. CN 105290846 B discloses a clamping fixture for plate flanges. The clamping fixture includes a base, a clamping block, and a top-pressing bolt. A circular groove is provided at the upper end of the base, and a transmission screw fixed to the base is located at the center of the groove. The clamping block is threaded onto the transmission screw and is conical in shape, with its large end facing downwards. At least three evenly distributed threaded holes are provided on the sidewall of the circular groove, and the number of top-pressing bolts is the same as the number of threaded holes. The clamping fixture achieves a clamping effect by ensuring close contact between the conical surface of the clamping block 2 and the inner hole of the plate flange 4. The tip of the top-pressing bolt 3 clamps the outer circle of the flange 4. This device is suitable for flat flanges, but for flanges with a raised inner circle, such as… Figure 5 As shown, the top-pressing bolt 3 cannot contact the outer circle of the flange, making it impossible to clamp it. On the other hand, if welding operations between the flange and the pipeline are required, the clamping block 2 needs to be removed due to its obstruction. After removal, the pipeline cannot be aligned. Therefore, the device has certain limitations in use. In order to overcome the above limitations, this utility model further improves upon this and proposes a flange tooling fixture. Summary of the Invention

[0004] The purpose of this utility model is to provide a flange tooling fixture that can clamp different types of flanges and facilitate the alignment and welding of flanges with pipes.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A flange tooling fixture includes a base and a base support plate. The base support plate covers the base. A central sleeve is fixedly mounted on the base support plate. A cylinder is disposed in the base. The cylinder's extension end passes through the base support plate and connects to a central wedge. The central wedge is located in the central sleeve. A side wedge is also disposed in the central sleeve. The inclined surfaces of the side wedge and the central wedge are in contact. The other side of the side wedge is connected to a tensioning side plate through a short connecting post. A sliding strip hole is also provided on the base support plate. A guide strip is slidably disposed on the sliding strip hole. A driving mechanism for driving the linear movement of the guide strip is disposed in the base. A stepped clamping post is disposed at the upper end of the guide strip.

[0006] Furthermore, the base is provided with a plurality of support columns for supporting the base plate, and mounting holes are provided on the edge of the base.

[0007] Furthermore, the driving mechanism is a bidirectional cylinder, with its two ejector ends connected to the guide rail. The guide rail is provided with a limiting part located on the upper and lower surfaces of the guide rail hole.

[0008] Furthermore, the outer wall of the central sleeve is circular and has a shallow groove, and the tensioning side plates are arranged in the shallow groove. There are four tensioning side plates. The inner wall of the central sleeve is square, and the central wedge has a conical structure. The lower end of the central wedge is in contact with the inner wall of the central sleeve.

[0009] Furthermore, the guide rail is also provided with a screw, which passes upward through the stepped clamping post and is threadedly connected to a pressure sleeve at the upper part of the screw.

[0010] Furthermore, the bottom of the pressure sleeve has a flared structure, and a rubber ring is provided on the bottom surface of the pressure sleeve.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention features a cylinder mounted on a base with a central wedge at the cylinder's extension end. A side wedge is located within a central sleeve, connected to a tensioning side plate via short-connecting posts. This allows for tensioning and clamping of the flange's central hole. During welding of the pipe and flange, the pipe can be fitted onto the central sleeve, where the tensioning side plate provides centering and tension, facilitating welding. Furthermore, stepped clamping posts on both sides apply a horizontal clamping force to the flange. A pressure sleeve connected to the screw applies downward pressure to the flange. Through these three clamping actions, the clamping effect of the flange can be significantly enhanced, making the flange more stable. In this utility model, due to the setting of stepped clamping columns, the outer circle of the flange is located on the stepped clamping columns, and the bottom surface of the flange does not contact the base support plate. This allows the device to be used regardless of whether there is a protrusion on the inner circle of the flange, thereby overcoming the limitations of the prior art. In addition, a two-way cylinder is set on the base, which is connected to the guide rail to control the distance between the stepped clamping columns. This enables the clamping of flanges of different sizes. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a top view of the base.

[0014] Figure 3 This is a schematic diagram of the central sleeve structure.

[0015] Figure 4 This is a schematic diagram of the guide strip structure.

[0016] Figure 5 This is a schematic diagram of the longitudinal section of the flange with a protrusion at the inner circle.

[0017] In the diagram, 1-base, 2-cylinder, 3-double-acting cylinder, 4-guide strip, 41-limiting part, 5-base support plate, 51-sliding strip hole, 6-step clamping column, 7-screw, 8-pressure sleeve, 9-rubber ring, 10-flange, 11-center sleeve, 12-tensioning side plate, 13-short joint column, 14-side wedge, 15-center wedge, 16-support column. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] refer to Figure 1-2 As shown, this utility model provides a flange tooling fixture, including a base 1 and a base support plate 5. The base support plate 5 covers the base 1, and a central sleeve 11 is fixedly installed on the base support plate 5. The central sleeve 11 is located at the center of the base support plate 5. Preferably, the central sleeve 11 is connected to the base support plate 5 by screws. In use, the center hole of the flange 10 needs to be fitted onto the central sleeve 11. A cylinder 2 is installed in the base 1, and the pushing end of the cylinder 2 passes through the base support plate 5 and is connected to a central wedge 15. The central wedge 15 is located in the central sleeve 11. The central sleeve 11 also contains... The base plate 5 is provided with side wedges 14, preferably four in number. The inclined surfaces of the side wedges 14 and the center wedge 15 are in contact, so that the side wedges 14 are pushed outward by the extension and retraction of the center wedge 15. The other side of the side wedges 14 is connected to the tensioning side plate 12 through a shorting post 13. The base plate 5 is also provided with sliding strip holes 51, and guide strips 4 are slidably disposed on the sliding strip holes 51. A drive mechanism for driving the linear movement of the guide strips 4 is provided in the base 1. A stepped clamping post 6 is provided at the upper end of the guide strips 4. Further, the number of sliding strip holes 51 is four. (Reference) Figure 4 As shown, there are two guide strips 4 and stepped clamping posts 6 are set at both ends of the guide strips 4.

[0020] In this embodiment, the base 1 is provided with a plurality of support columns 16 for supporting the base support plate 5 to increase the support strength of the base support plate 5. Mounting holes are provided on the edge of the base 1 to facilitate the fixing of the clamp. In order to achieve synchronous movement of the guide strip 4, the driving mechanism is a bidirectional cylinder 3. The two push-out ends of the bidirectional cylinder 3 are connected to the guide strip 4. The guide strip 4 is provided with a limiting part 41, which is located on the upper and lower surfaces of the sliding strip hole 51 to prevent the guide strip 4 from shaking or tilting.

[0021] In addition, in some embodiments, the drive mechanism can be replaced by a screw with oppositely helical threads, so that the two guide bars 4 can be adjusted synchronously when the screw is rotated.

[0022] In addition, to further improve the clamping effect on the flange, a screw 7 is provided on the guide strip 4. The screw 7 passes upward through the stepped clamping post 6 and is threadedly connected to a pressure sleeve 8 on the upper part of the screw 7. The bottom of the pressure sleeve 8 has a flared structure, so that the bottom edge of the pressure sleeve 8 can contact the upper surface of the flange 10. A rubber ring 9 is provided on the bottom surface of the pressure sleeve 8. The rubber ring 9 applies pressure to the upper surface of the flange 10 to clamp it.

[0023] refer to Figure 3As shown, the outer wall of the central sleeve 11 is circular and has a shallow groove. The tensioning side plate 12 is placed in the shallow groove. In the untensioned state, the outer wall of the tensioning side plate 12 is flush with the outer wall of the central sleeve 11. There are 4 tensioning side plates 12. The inner wall of the central sleeve 11 is square. The central wedge 15 has a conical structure. The lower end of the central wedge 15 contacts the inner wall of the central sleeve 11, thereby preventing the central wedge 15 from shaking and ensuring that the ejection amount of the 4 tensioning side plates 12 is the same.

[0024] The working process of this utility model is as follows: the center hole of the flange 10 is inserted into the center sleeve 11, the bidirectional cylinder 3 is activated, and the stepped clamping columns 6 on both sides move inward to apply a horizontal force to the side of the flange 10 for tightening. This is the first aspect of clamping. The edge of the flange 10 rests on the steps of the stepped clamping columns 6. The center wedge block 15 of the cylinder 2 is activated to push upward, driving the surrounding side wedge blocks 14 to push outward, thereby tightening the side plate 12 to tighten the inner hole of the flange 10. This is the second aspect of clamping. In addition, the pressure sleeve 8 is turned so that the pressure sleeve 8 presses against the upper surface of the edge of the flange 10. This is the third aspect of clamping. Through these three aspects of clamping, the clamping effect of the flange 10 can be significantly enhanced. When it is necessary to weld the flange 10 and the pipe, since the inner diameter of the pipe is the same as the inner diameter of the flange 10, the pipe can be directly sleeved on the center sleeve 11 for alignment.

[0025] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that those skilled in the art can devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, various modifications and improvements can be made to the components or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides modifications and improvements to the components or layout, other uses will be apparent to those skilled in the art.

Claims

1. A flange tooling fixture, comprising a base (1) and a base support plate (5), the base support plate (5) covering the base (1), characterized in that: A central sleeve (11) is fixedly installed on the base support plate (5). A cylinder (2) is installed in the base (1). The push-out end of the cylinder (2) passes through the base support plate (5) and is connected to the central wedge (15). The central wedge (15) is located in the central sleeve (11). A side wedge (14) is also installed in the central sleeve (11). The inclined surfaces of the side wedge (14) and the central wedge (15) are in contact. The other side of the side wedge (14) is connected to the tensioning side plate (12) through a short connecting post (13). A sliding strip hole (51) is also installed on the base support plate (5). A guide strip (4) is slidably installed on the sliding strip hole (51). A driving mechanism for driving the guide strip (4) to move linearly is installed in the base (1). A stepped clamping post (6) is installed at the upper end of the guide strip (4).

2. The flange tooling fixture according to claim 1, characterized in that: The base (1) is provided with a plurality of support columns (16) for supporting the base support plate (5), and mounting holes are provided on the edge of the base (1).

3. A flange tooling fixture according to claim 1, characterized in that: The driving mechanism is a two-way cylinder (3). The two push-out ends of the two-way cylinder (3) are connected to the guide strip (4). The guide strip (4) is provided with a limiting part (41), which is located on the upper and lower surfaces of the sliding strip hole (51).

4. A flange tooling fixture according to claim 1, characterized in that: The outer wall of the central sleeve (11) is circular and has a shallow groove. Tensioning side plates (12) are set in the shallow groove. There are 4 tensioning side plates (12). The inner wall of the central sleeve (11) is square. The central wedge (15) has a conical structure. The lower end of the central wedge (15) is in contact with the inner wall of the central sleeve (11).

5. A flange tooling fixture according to claim 1, characterized in that: The guide strip (4) is also provided with a screw (7), which passes upward through the stepped clamping column (6) and is threadedly connected to a pressure sleeve (8) on the upper part of the screw (7).

6. A flange tooling fixture according to claim 5, characterized in that: The bottom of the pressure sleeve (8) has a flared structure, and a rubber ring (9) is provided on the bottom surface of the pressure sleeve (8).

Images