A clamp for flanged connections

Abstract

The utility model provides a kind of clamp for flange connecting piece, it is positioned to flange connecting piece by three adjacent setting positioning structure: flange connecting end positioning structure, flange end side wall positioning structure and connecting pipe positioning structure, it is clamped to connecting pipe by connecting pipe side wall clamping structure and connecting pipe positioning structure cooperation, it is realized clamping to the flange end of flange connecting piece by flange end side wall clamping structure and flange end side wall positioning structure cooperation;All contact parts of clamp with flange connecting piece are set to profile structure, reduce the probability of part damage.

Description

Technical Field

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

[0002] like Figure 1 As shown, this is a flanged connector used in the production process, comprising a flange end and a connecting pipe. The flange end includes a first connecting end a1 and a second connecting end a2, and the connecting pipe a3 has an S-shaped bend structure. The surfaces to be machined on this part are not on the same plane, and the positioning method is based on the outer edge of the blank. If positioning is based on a simple manual clamp, the stability of the positioning cannot be guaranteed, and the processing efficiency is low. Furthermore, because the connecting pipe a3 has a thin-walled structure, improper manual clamping can lead to uneven clamping force, causing the part to dent or the machined hole to deviate, reducing the yield rate. Summary of the Invention

[0003] To address the problems of low efficiency and easy damage to parts when positioning flanged connectors using manual clamps, this utility model provides a clamp for flanged connectors that enables stable processing of parts, greatly improving processing efficiency. At the same time, it has good positioning stability and uniform force on the parts, which can effectively improve the yield rate.

[0004] The structure of this utility model is as follows: a clamp with flanged connector, characterized in that it includes: a positioning structure and a clamping structure, both of which are mounted on a base plate;

[0005] The positioning structure includes: a flange end positioning structure and a connecting pipe positioning structure;

[0006] The flange end positioning structure includes: a flange connection end positioning structure and a flange end sidewall positioning structure. The contact part between the flange connection end positioning structure and the flange end is set as a conformal structure of the flange connection end, and the flange end sidewall positioning structure is set as a cylindrical positioning pin.

[0007] The connecting pipe positioning structure includes: a contoured structure on the outer wall of the connecting pipe;

[0008] The flange connection end positioning structure, the flange end sidewall positioning structure, and the connecting pipe positioning structure are arranged adjacent to each other.

[0009] The clamping structure includes: a flange end sidewall clamping structure and a connecting pipe sidewall clamping structure;

[0010] The clamping parts of the flange end sidewall clamping structure and the flange end sidewall positioning structure are arranged opposite to each other, and are respectively located on the outside of the two flange connection ends with flange connectors; the flange end sidewall clamping structure includes: a flange connection end conforming structure, which realizes linear motion based on a drive structure;

[0011] The connecting pipe sidewall clamping structure and the connecting pipe positioning structure are respectively disposed on both sides of the connecting pipe; the connecting pipe sidewall clamping structure includes: a connecting pipe sidewall conforming structure, which realizes movement perpendicular to the contact surface of the connecting pipe based on a driving structure;

[0012] The flange end sidewall clamping structure and the connecting pipe sidewall clamping structure are arranged adjacent to each other.

[0013] Its further features are:

[0014] The positioning structure also includes: a flange end bottom support structure, which includes a support boss. The two support bosses are respectively disposed below the contoured surfaces of the flange end sidewall positioning structure and the flange end sidewall clamping structure to support the bottom of the two flange connection ends.

[0015] It also includes: a flange side clamping structure, which includes: a cylindrical clamping pin and a driving structure. The clamping pin is located on one side of the flange end, and the clamping pin moves linearly in a direction perpendicular to the adjacent flange end sidewall under the drive of the driving structure.

[0016] The flange side clamping structure is positioned between the flange end sidewall positioning structure and the connecting pipe sidewall clamping structure.

[0017] The flange end sidewall positioning structure is located at the lower part of the connecting pipe, and the contact position between the connecting pipe sidewall clamping structure and the connecting pipe is higher than the contact position between the flange end sidewall positioning structure and the connecting pipe.

[0018] This utility model provides a fixture for flanged connectors, which uses three adjacent positioning structures: a flange connection end positioning structure, a flange end sidewall positioning structure, and a connecting pipe positioning structure, to position the flanged connector. The connecting pipe is clamped by the cooperation of the connecting pipe sidewall clamping structure and the connecting pipe positioning structure. The flange end of the flanged connector is clamped by the cooperation of the flange end sidewall clamping structure and the flange end sidewall positioning structure. All contact points with the flanged connector in the fixture are designed with contour-following structures to reduce the probability of part damage. By arranging the flange connection end positioning structure, the flange end sidewall positioning structure, and the connecting pipe positioning structure adjacent to each other, when the adjacent flange end sidewall clamping structure and the connecting pipe sidewall clamping structure are driven by the driving structure to achieve clamping, it ensures that the flanged connector is simultaneously subjected to force in multiple directions, maintaining balanced force and stability during processing. Based on the technical solution of this application, the positioning and clamping of the connector can be quickly achieved, effectively improving processing efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the flanged connector structure that needs to be machined;

[0020] Figure 2 This is a schematic diagram showing the position of the flanged connector after it is combined with the clamp.

[0021] Figure 3 This is a three-dimensional structural diagram of the fixture in this application;

[0022] Figure 4 This is a top view of the fixture in this application.

[0023] Figure 5 This is a side view structural diagram of the fixture in this application.

[0024] In the diagram, 1-base plate, 2-V-shaped block, 3-support block, 4-clamping block, 5-positioning plate, 6-first stiffener, 7-positioning pin, 8-shield, 9-first upright plate, 10-first thin-walled cylinder, 11-cylinder gasket, 12-first cylinder connecting rod, 13-first push block, 14-connecting pin, 15-V-shaped push block, 16-second thin-walled cylinder, 17-second upright plate, 18-single-acting cylinder, 19-cylinder connecting pin, 20-cylinder connecting seat, 21-V-shaped positioning block, 22-first positioning block, 23-second stiffener, 24-third stiffener, 25-second positioning block, 26-connecting plate, 27-second cylinder connecting rod, 28-second push block, 29-contour clamping block. Detailed Implementation

[0025] This utility model includes a clamp for flanged connectors, comprising: a positioning structure and a clamping structure, both of which are mounted on a base plate 1.

[0026] The positioning structure includes: a flange end positioning structure, a connecting pipe positioning structure, and a flange end bottom support structure. The flange end positioning structure includes: a flange connection end positioning structure and a flange end sidewall positioning structure. The contact area between the flange connection end positioning structure and the flange end is designed as a contoured structure of the flange connection end. The flange end sidewall positioning structure is a cylindrical positioning pin. The connecting pipe positioning structure is designed as a contoured structure of the outer sidewall of the bottom of the connecting pipe. The flange connection end positioning structure, the flange end sidewall positioning structure, and the connecting pipe positioning structure are arranged adjacent to each other.

[0027] The flange end bottom support structure includes support bosses. The two support bosses are respectively located below the contoured surfaces of the flange end sidewall positioning structure and the flange end sidewall clamping structure, providing bottom support for the two flange connection ends.

[0028] Specifically, such as Figures 2-5 As shown, the flange connection end positioning structure includes a V-shaped positioning block 21. The V-shaped clamping opening of the V-shaped positioning block 21 is a contour-following structure, and its shape and size are adapted to the second connection end a2. The V-shaped positioning block 21 is positioned above the first positioning block 22, as shown. Figure 4 As shown, the top surface of the first positioning block 22 forms a support boss for the second connecting end a2. The second stiffening plate 23 is used to enhance the structural strength and ensure that the fixture remains stable during processing.

[0029] The flange end sidewall positioning structure includes: positioning pin 7, which is installed on positioning plate 5.

[0030] The connecting pipe positioning structure includes a V-block 2, which is mounted on top of the support block 3 via a clamping block 4. The V-shaped clamping part of the V-block 2 is a contour-following structure, and its size and shape are adapted to the shape and size of the side wall of the connecting pipe a3 at its height. The V-block 2 has a certain thickness to ensure that it can be evenly supported on the side wall of the connecting pipe and will not damage the connecting pipe with flanged connectors during clamping and processing. Both the clamping block 4 and the V-block 2 are bolted to the support block 3, ensuring that the thickness of the V-block 2 can be easily and quickly adjusted according to the test.

[0031] like Figure 2As shown, the specific positions of V-shaped positioning block 21, V-shaped block 2, and positioning pin 7 are set with the flange connector to be processed as the center. The flange connector is positioned based on V-shaped positioning block 21, V-shaped block 2, and positioning pin 7. V-shaped block 2 positions the lower end of connecting pipe a3, V-shaped positioning block 21 positions the second connecting end a2, and positioning pin 7 is set on the side wall of the flange end adjacent to the first connecting end a1. V-shaped positioning block 21 and positioning pin 7 are set at the height of the flange end, and V-shaped block 2 is set at the lower part of connecting pipe a3. The three positioning devices are set adjacent to each other to ensure that when the flange connector is placed on the bottom plate 1, it is placed in the form of three adjacent positioning devices, so as to achieve rapid positioning.

[0032] The clamping structure includes: a flange end sidewall clamping structure and a connecting pipe sidewall clamping structure; the flange end sidewall clamping structure and the flange end sidewall positioning structure are respectively set on both sides of the flange connection end, facing each other; the flange end sidewall clamping structure includes: a flange connection end contouring structure, which realizes linear motion based on the driving structure.

[0033] The connecting pipe sidewall clamping structure includes: a connecting pipe sidewall conforming structure, which realizes movement perpendicular to the contact surface of the connecting pipe a3 based on the driving structure.

[0034] Specifically, the flange end sidewall clamping structure includes: a V-shaped push block 15, the V-shaped clamping port of which is a flange connection end conformal structure, and its shape and size are adapted to the first connection end a1. One end of the V-shaped push block 15 has its V-shaped clamping port facing the V-shaped block 21, and the other end is connected to the first push block 13 via a connecting pin 14. The first push block 13 is connected to the first hydraulic cylinder connecting rod 12, which passes through the first vertical plate 9 and connects to the output end of the first thin hydraulic cylinder 10. The first push block 13 is slidably mounted on the first vertical plate 9 and guided by a groove (not marked in the figure) opened in the first vertical plate 9. The first thin hydraulic cylinder 10 is fixedly mounted on the first vertical plate 9 via a cylinder gasket 11. When the first thin hydraulic cylinder 10 is started, it drives the first push block 13 and the V-shaped push block 15 to achieve linear motion via the first hydraulic cylinder connecting rod 12. The second positioning block 25 is located below the V-shaped push block 15, and the top surface of the second positioning block 25 forms a support boss at the bottom of the first connecting end a1.

[0035] The connecting pipe sidewall clamping structure includes: a contour clamping block 29, such as... Figure 4The contour-following clamping block 29 shown is a contour-following structure for the side wall of the connecting pipe. One end of the contour-following clamping block 29 is a clamping port, which is an arc shape adapted to the side wall of the connecting pipe a3. The other end of the contour-following clamping block 29 is connected to the second push block 28. The second push block 28 is connected to the second hydraulic cylinder connecting rod 27. After passing through the second vertical plate 17, the second hydraulic cylinder connecting rod 27 is connected to the second thin hydraulic cylinder 16. The second thin hydraulic cylinder 16 is fixedly installed on the second vertical plate 17. The second push block 28 is slidably installed in a groove (not marked in the figure) opened on the second vertical plate 17. When the second thin hydraulic cylinder 16 is started, it drives the second push block 28 and the contour-following clamping block 29 to achieve linear motion through the second hydraulic cylinder connecting rod 27. Figure 2 As shown, the clamping opening of the contour clamping block 29 is perpendicular to the contact surface of its adjacent connecting pipe a3, ensuring that the thin-walled connecting pipe a3 will not be damaged after clamping. The connecting pipe sidewall clamping structure and the connecting pipe positioning structure are respectively set on both sides of the connecting pipe, facing each other. Figure 4 As shown, in the top view, the V-block 2 and the contour clamping block 29 are arranged in a straight line with opposite clamping directions, clamping the connecting pipe from both sides to ensure that the connecting pipe is subjected to uniform force and can remain stable during processing.

[0036] The flange end sidewall clamping structure and the connecting pipe sidewall clamping structure are arranged adjacent to each other. When the V-shaped push block 15 and the contour pressing block 29 are pushed by the drive structure to press against the parts, the forces between the two will not cancel each other out too much.

[0037] To ensure the stability of the flanged connector during processing, this application also includes a flange side clamping structure. The clamping structure includes a cylindrical clamping pin 19, which is positioned on one side of the flange end. Driven by a drive structure, the clamping pin 19 moves linearly in a direction perpendicular to the adjacent flange end sidewall. The drive structure is based on a single-acting cylinder 18, and the clamping pin 19 is connected to the output end of the single-acting cylinder 18. The clamping pin 19 is positioned between the conformal clamping block 29 of the connecting pipe sidewall clamping structure and the V-shaped positioning block 21 of the flange end sidewall positioning structure.

[0038] In this application, the flange end sidewall positioning structure is located at the bottom end of the connecting pipe. The contact position between the connecting pipe sidewall clamping structure and the connecting pipe is higher than the contact position between the flange end sidewall positioning structure and the connecting pipe. The clamping and positioning of the S-shaped connecting pipe a3 is achieved by the V-shaped positioning block 21 and the contour clamping block 29. In this embodiment, the V-shaped positioning block 21 is aligned with the upper bending part of the S-bend of the connecting pipe a3, and the clamping port of the V-shaped positioning block 21 is tilted downward. The contour clamping block 29 is aligned with the lower bending part of the S-bend of the connecting pipe a3, and the clamping port is set horizontally.

[0039] The specific clamping process is as follows: Place the two flange ends with flange connectors, the first connecting end a1 and the second connecting end a2, flat on the boss surface of the support boss formed by the first positioning block 22 and the second positioning block 25. Place the V-shaped structure of the second connecting end a2 close to the V-shaped clamping opening of the V-shaped positioning block 21, and at the same time, make the outer edge of the flange rest against the positioning pin 7. Then, let the lower end of the pipe wall of the part rest against the clamping opening of the V-shaped block 2. At this time, the positioning of the flange connector is completed.

[0040] Press the start button of the machine tool, and the oil circuit starts to supply oil. The first thin oil cylinder 10 drives the first push block 13 and the V-shaped push block 15 to clamp the flange end of the part with the V-shaped clamping port of the V-shaped positioning block 21.

[0041] The second thin-type hydraulic cylinder 16 drives the second push block 28 to clamp the pipe opening of the connecting pipe a3 with the V-shaped block 2 through the contour clamping block 29.

[0042] Finally, the single-acting cylinder 18 pushes the clamping pin 19 to provide auxiliary support to the flange end with the flange connector, ensuring machining accuracy.

[0043] The fixture using this solution achieves effective positioning and clamping of flanged connectors, improving clamping stability and positioning accuracy, avoiding errors in positioning, clamping, and machining of flanged connectors, improving the repeatability and reproducibility of part machining, ensuring clamping speed, and improving part machining efficiency and quality.

[0044] By using the technical solution of this utility model, the fixed positioning part enables the part to achieve self-positioning; then, the clamping part achieves positioning and clamping of the part in multiple directions, while the flange side clamping structure provides auxiliary positioning for the part, ensuring machining accuracy. Using the fixture of this application enables stable machining of parts, greatly improving machining efficiency. At the same time, it has good positioning stability, uniform force on the part, good machining repeatability and reproducibility, and fast clamping speed.

Claims

1. A clamp for a flanged connection, characterized in that It comprises: a positioning structure and a clamping structure, both of which are mounted on a base plate; the positioning structure comprises: a flange end positioning structure and a connecting pipe positioning structure; the flange end positioning structure comprises: a flange connecting end positioning structure and a flange end side wall positioning structure, the contact position of the flange connecting end positioning structure with the flange end is set as a profiling structure of the flange connecting end, and the flange end side wall positioning structure is set as a cylindrical positioning pin; the connecting pipe positioning structure comprises: a profiling structure of the outer side wall of the connecting pipe; the flange connecting end positioning structure, the flange end side wall positioning structure and the connecting pipe positioning structure are adjacently arranged; the clamping structure comprises: a flange end side wall clamping structure and a connecting pipe side wall clamping structure; the flange end side wall clamping structure is oppositely arranged with the clamping position of the flange end side wall positioning structure and is arranged outside the two flange connecting ends with flange connecting members respectively; the flange end side wall clamping structure comprises: a flange connecting end profiling structure, which realizes linear motion based on a driving structure; the connecting pipe side wall clamping structure and the connecting pipe positioning structure are arranged on both sides of the connecting pipe respectively; the connecting pipe side wall clamping structure comprises: a connecting pipe side wall profiling structure, which realizes motion perpendicular to the contact surface of the connecting pipe based on a driving structure; the flange end side wall clamping structure and the connecting pipe side wall clamping structure are adjacently arranged.

2. The clamp for a flanged connection according to claim 1, characterized in that: The positioning structure further comprises: a flange end bottom support structure, which comprises support bosses, two support bosses are arranged below the profiling surfaces of the flange end side wall positioning structure and the flange end side wall clamping structure respectively, and support the bottoms of the two flange connecting ends.

3. The clamp for flanged connections according to claim 1, characterized in that: It further comprises: a flange side edge pressing structure, which comprises: a cylindrical pressing pin and a driving structure, the pressing pin is arranged on one side of the flange end, and the pressing pin realizes linear motion in a direction perpendicular to the adjacent flange end side wall under the driving of the driving structure.

4. The clamp for flanged connections according to claim 3, characterized in that: The flange side edge pressing structure is arranged at a position between the flange end side wall positioning structure and the connecting pipe side wall clamping structure.

5. The clamp for flanged connections according to claim 1, characterized in that: The flange end side wall positioning structure is arranged at the lower part of the connecting pipe, and the contact position of the connecting pipe side wall clamping structure with the connecting pipe is higher than the contact position of the flange end side wall positioning structure with the connecting pipe.

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