Flange plate clamping hand

Abstract

The utility model provides a flange plate clamping hand. The flange plate clamping hand comprises a clamping jaw assembly, a driving assembly and a supporting assembly. The clamping jaw assembly is provided with a first clamping jaw assembly and a second clamping jaw assembly, and the first clamping jaw assembly and the second clamping jaw assembly can be arranged on the supporting assembly in a face-to-face or back-to-back rotating mode and are used for clamping or loosening a workpiece. The clamping jaw assembly further comprises a material supporting assembly, and the material supporting assembly is rotatably arranged on the supporting assembly and used for auxiliary supporting when a workpiece is clamped. The driving assembly is provided with a telescopic mechanism, and the telescopic mechanism is used for driving the first clamping jaw assembly, the second clamping jaw assembly and the material supporting assembly to rotate. The flange plate clamping hand is compact in structure and convenient to install, the stability and accuracy of a workpiece in the automatic clamping and feeding and discharging process are greatly improved through the clamping structure that the middle clamping jaw is used for clamping and the material supporting arms on the two sides are used for supporting and supporting, and meanwhile the clamping efficiency of the workpiece is also improved.

Description

Technical Field

[0001] This utility model relates to the field of automated processing technology, and in particular to a flange clamp. Background Technology

[0002] When loading and unloading disc-shaped workpieces, clamps for cylindrical workpieces are mostly used. During the clamping process, the workpieces are prone to instability and falling, which reduces the production efficiency of automated processing and also poses certain safety risks to operators. Utility Model Content

[0003] The purpose of this utility model is to provide a flange clamp to solve at least one or more technical problems existing in the prior art.

[0004] To solve the above-mentioned technical problems, this utility model provides a flange clamp, including: a gripper assembly, a drive assembly, and a support assembly;

[0005] The gripper assembly includes a first gripper assembly and a second gripper assembly. The first gripper assembly and the second gripper assembly are rotatably disposed on the support assembly in opposite directions for clamping or releasing the workpiece.

[0006] The gripper assembly also includes a material support assembly, which is rotatably disposed on the support assembly and is used for auxiliary support when clamping the workpiece.

[0007] The drive assembly is provided with a telescopic mechanism, which is used to drive the first gripper assembly, the second gripper assembly and the material support assembly to rotate.

[0008] Furthermore, the support assembly includes a support frame, which is arranged in a concave frame shape. Elongated holes are symmetrically opened on both sides of the support frame. A first connecting long shaft is movably arranged between the elongated holes along the length direction of the elongated holes for driving the first gripper assembly, the second gripper assembly and the material support assembly to move. The two ends of the first connecting long shaft pass through from the inside to the outside and extend out of the side wall of the support frame.

[0009] A second connecting long shaft is also fixedly installed on the support frame. The second connecting long shaft is arranged parallel to the first connecting long shaft and is used for rotational support of the first gripper assembly, the second gripper assembly and the material support assembly.

[0010] The two ends of the second connecting long shaft pass through from the inside out and extend out of the side wall of the support frame.

[0011] Furthermore, the first gripper assembly and the second gripper assembly are disposed inside the support frame.

[0012] Furthermore, the first gripper assembly includes symmetrically and spaced-apart ground grippers and a first connecting rod group, wherein the upper gripper and the first connecting rod are arranged adjacent to each other in each group;

[0013] One end of the upper jaw is rotatably sleeved on the first connecting short shaft, and the middle part of the upper jaw is sleeved on the second connecting long shaft, which is used for rotational support when the other end of the upper jaw approaches or moves away from the workpiece.

[0014] One end of the first connecting rod is rotatably sleeved on the first connecting short shaft, and the other end is rotatably sleeved on the first connecting long shaft, for driving the upper gripper to rotate around the second connecting long shaft;

[0015] The first connecting short shaft is arranged parallel to the first connecting long shaft, and a first limiting sleeve is provided on the upper part of the first connecting short shaft for axial limiting between each set of upper jaws and the first connecting rod.

[0016] Furthermore, the second gripper assembly includes symmetrically and spaced-apart lower grippers and a second connecting rod group, wherein the lower gripper and the second connecting rod are arranged adjacent to each other in each group;

[0017] One end of the lower jaw is rotatably sleeved on the second connecting short shaft, and the middle part of the lower jaw is sleeved on the second connecting long shaft, for rotational support when the other end of the lower jaw approaches or moves away from the workpiece;

[0018] One end of the second connecting rod is rotatably sleeved on the second connecting short shaft, and the other end is rotatably sleeved on the first connecting long shaft, for driving the lower gripper to rotate around the second connecting long shaft;

[0019] The second connecting short shaft is arranged parallel to the first connecting long shaft, and a second limiting sleeve is provided on the upper part of the second connecting short shaft for axial limiting between each set of lower jaws and the second connecting rod.

[0020] Preferably, the upper gripper and the lower gripper on the same side are arranged adjacent to each other.

[0021] Furthermore, the material support assembly is disposed on the outside of the support frame, and includes symmetrically and spaced material support arms, a third connecting rod, and a third connecting short shaft assembly, wherein the material support arms and the third connecting rod are spaced apart;

[0022] One end of the material support arm is rotatably sleeved on the third connecting short shaft, and the middle part of the material support arm is sleeved on the second connecting long shaft, which is used for rotational support when the other end of the material support arm approaches or moves away from the workpiece.

[0023] The material support arm has multiple leveling screws spaced apart and threadedly connected to its material support end, which are used for horizontal leveling when clamping workpieces of different thicknesses.

[0024] One end of the third connecting rod is rotatably sleeved on the third connecting short shaft, and the other end is rotatably sleeved on the first connecting long shaft, for driving the material support arm to rotate around the second connecting long shaft;

[0025] The third connecting short shaft is arranged parallel to the first connecting long shaft, and a third limiting sleeve is fitted on the third connecting short shaft for limiting the distance between the material support arm and the third connecting rod in each group;

[0026] The third connecting rod is disposed adjacent to the side wall of the support frame, the material support arm is disposed at a distance from the side wall of the support frame, and a fourth limiting sleeve is sleeved on the second connecting long shaft for axial limiting between the material support arm and the support frame.

[0027] Furthermore, the drive assembly also includes a guide shaft that is horizontal and perpendicular to the first connecting long axis. One end of the guide shaft is fixedly disposed on the first connecting long axis and the connecting plate, and the other end of the guide shaft passes through the support frame and the mounting base and is fixedly connected to the connecting plate.

[0028] A guide sleeve is coaxially sleeved on the outside of the guide shaft, and a guide sleeve is sleeved between the guide sleeve and the guide shaft;

[0029] The guide sleeve is fixedly mounted on the mounting base.

[0030] Furthermore, the telescopic mechanism is symmetrically arranged on both sides of the guide shaft along the axial direction of the guide shaft, and the body of the telescopic end is fixedly arranged on the mounting base. The telescopic end of the telescopic mechanism is fixedly arranged on the connecting plate, which is used to drive the connecting plate and the guide shaft to reciprocate along the axial direction of the guide shaft.

[0031] The telescopic mechanism can be a telescopic cylinder, a telescopic hydraulic cylinder, or an electric telescopic rod, etc.

[0032] The support frame is fixedly mounted on one end of the mounting base.

[0033] By adopting the above technical solution, this utility model has the following beneficial effects:

[0034] The flange clamp provided by this utility model has the following advantages:

[0035] 1. The gripper assembly structure, with the middle gripper holding the workpiece and the two side support arms supporting it, greatly improves the stability of disc or ring-shaped workpieces during automatic clamping and loading / unloading. The guide shaft and guide sleeve improve the accuracy of the gripper assembly in clamping the workpiece and increase the workpiece clamping efficiency.

[0036] 2. The telescopic end of the telescopic mechanism is set in the opposite direction to the gripper assembly, which shortens the gripping arm of the robot arm and greatly improves the load force of the gripper assembly; at the same time, the gripper assembly is driven by a single power source to complete the gripping action simultaneously, which also greatly improves the workpiece gripping efficiency.

[0037] 3. This flange plate clamp has a compact structure, is easy to install, and is simple to operate. Attached Figure Description

[0038] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A perspective view of a flange plate clamp provided for an embodiment of this utility model;

[0040] Figure 2 A perspective view of a flange plate clamping support assembly provided for an embodiment of this utility model;

[0041] Figure 3 An assembly perspective view of a flange plate clamping middle support assembly and a first clamping claw assembly provided for an embodiment of this utility model;

[0042] Figure 4 A perspective view of the first connecting short shaft in a flange plate clamp provided for an embodiment of this utility model;

[0043] Figure 5 An assembly perspective view of a flange plate clamping middle support assembly and a second clamping claw assembly provided for an embodiment of this utility model;

[0044] Figure 6 A perspective view of a second connecting short shaft in a flange plate clamp provided for an embodiment of this utility model;

[0045] Figure 7 An assembly perspective view of a flange plate clamping support assembly and a material support assembly provided for an embodiment of this utility model;

[0046] Figure 8 An assembly perspective view of a flange plate clamping drive assembly and a support assembly provided for an embodiment of this utility model;

[0047] Figure 9 A top view of a flange clamp provided for an embodiment of this utility model;

[0048] Figure 10 for Figure 9 Sectional view of AA;

[0049] Figure 11 A front view of a flange clamp holding a workpiece according to an embodiment of this utility model;

[0050] Figure 12 This is a front view of a flange plate clamp releasing a workpiece, provided as an embodiment of the present invention.

[0051] Figure label:

[0052] 1-First gripper assembly; 11-Upper gripper; 12-First connecting rod; 13-First connecting short shaft; 14-First limiting spacer; 2-Second gripper assembly; 21-Lower gripper; 22-Second connecting rod; 23-Second connecting short shaft; 24-Second limiting spacer; 3-Material support assembly; 31-Material support arm; 32-Third connecting rod; 33-Third connecting short shaft; 34-Third limiting spacer; 35-Fourth limiting spacer; 36-Leveling screw; 4-Drive assembly; 41-Telescopic cylinder; 42-Guide shaft; 43-Guide sleeve; 44-Guide sleeve; 45-Connecting plate; 5-Support assembly; 51-Support frame; 511-Oblong hole; 52-First connecting long shaft; 53-Second connecting long shaft; 6-Mounting base. Detailed Implementation

[0053] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0054] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] The present invention will be further explained below with reference to specific embodiments.

[0057] like Figure 1 As shown, this embodiment provides a flange clamp, including: a gripper assembly, a drive assembly 4, and a support assembly 5;

[0058] The gripper assembly is provided with a first gripper assembly 1 and a second gripper assembly 2. The first gripper assembly 1 and the second gripper assembly 2 are rotatably disposed on the support assembly 5 in opposite directions for clamping or releasing the workpiece.

[0059] The gripper assembly also includes a material support assembly 3, which is rotatably mounted on the support assembly 5 for auxiliary support and leveling during workpiece clamping;

[0060] The drive assembly 4 is equipped with a telescopic mechanism, which is used to drive the first gripper assembly 1, the second gripper assembly 2 and the material support assembly 3 to rotate.

[0061] like Figure 2 As shown, the support assembly 5 includes a support frame 51, which is arranged in a concave frame shape. Elongated holes 511 are symmetrically opened on both sides of the support frame 51. A first connecting long shaft 52 is movably arranged between the elongated holes 511 along the length direction of the elongated holes 511, which is used to drive the first gripper assembly 1, the second gripper assembly 2 and the material support assembly 3 to rotate. The two ends of the first connecting long shaft 52 pass through from the inside to the outside and extend out of the side wall of the support frame 51.

[0062] A second connecting long shaft 53 is also fixedly installed on the support frame 51. The second connecting long shaft 53 is arranged parallel to the first connecting long shaft 52 and is used for rotational support of the first gripper assembly 1, the second gripper assembly 2 and the material support assembly 3.

[0063] The two ends of the second connecting long shaft 53 pass through from the inside to the outside and extend out of the side wall of the support frame 51.

[0064] The first gripper assembly 1 and the second gripper assembly 2 are both disposed within the support frame 51.

[0065] like Figure 3-4As shown, the first gripper assembly 1 includes two sets of upper grippers 11 arranged symmetrically and at intervals, and a first connecting rod 12, wherein the upper grippers 11 and the first connecting rod 12 in each set are arranged adjacent to each other;

[0066] One end of the upper jaw 11 is rotatably sleeved on the first connecting short shaft 13, and the middle part of the upper jaw 11 is sleeved on the second connecting long shaft 53, which is used for rotational support when the other end of the upper jaw 11 approaches or moves away from the workpiece.

[0067] One end of the first connecting rod 12 is rotatably sleeved on the first connecting short shaft 13, and the other end is rotatably sleeved on the first connecting long shaft 52, for driving the upper gripper 11 to rotate around the second connecting long shaft 53;

[0068] The first connecting short shaft 13 is arranged parallel to the first connecting long shaft 52. The first connecting short shaft 13 is fitted with a first limiting spacer 14 for axial limiting between each set of upper jaws 11 and the first connecting rod 12.

[0069] like Figure 5-6 As shown, the second gripper assembly 2 includes two sets of lower grippers 21 and a second connecting rod 22 arranged symmetrically and at intervals, with the lower grippers 21 and the second connecting rod 22 arranged adjacent to each other in each set;

[0070] One end of the lower jaw 21 is rotatably sleeved on the second connecting short shaft 23, and the middle part of the lower jaw 21 is sleeved on the second connecting long shaft 53 for rotational support when the other end of the lower jaw 21 approaches or moves away from the workpiece.

[0071] One end of the second connecting rod 22 is rotatably sleeved on the second connecting short shaft 23, and the other end is rotatably sleeved on the first connecting long shaft 52, for driving the lower gripper 21 to rotate around the second connecting long shaft 53;

[0072] The second connecting short shaft 23 is arranged parallel to the first connecting long shaft 52. The upper part of the second connecting short shaft 23 is provided with a second limiting spacer 24 for axial limiting between each set of lower jaws 21 and the second connecting rod 22.

[0073] Preferably, the upper gripper 11 and the lower gripper 21 on the same side are arranged adjacent to each other.

[0074] The adjacent upper jaw 11 and lower jaw 21 make the upper and lower clamping points close when clamping the workpiece, thus improving the stability of workpiece clamping.

[0075] like Figure 7 As shown, the material support assembly 3 is located on the outside of the support frame 51, including two sets of material support arms 31 arranged symmetrically and at intervals, a third connecting rod 32, and a third connecting short shaft 33. The material support arms 31 and the third connecting rod 32 are arranged at intervals.

[0076] One end of the material support arm 31 is rotatably sleeved on the third connecting short shaft 33, and the middle part of the material support arm 31 is sleeved on the second connecting long shaft 53 for rotational support when the other end of the material support arm 31 approaches or moves away from the workpiece.

[0077] The material support arm 31 has multiple leveling screws 36 spaced apart and threadedly connected to its material support end, which are used for horizontal leveling when clamping workpieces of different thicknesses.

[0078] One end of the third connecting rod 32 is rotatably sleeved on the third connecting short shaft 33, and the other end is rotatably sleeved on the first connecting long shaft 52, for driving the material support arm 31 to rotate around the second connecting long shaft 53;

[0079] The third connecting short shaft 33 is arranged parallel to the first connecting long shaft 52, and a third limiting sleeve 34 is sleeved on the third connecting short shaft 33 for axial limiting between the material support arm 31 and the third connecting rod 32.

[0080] The third connecting rod 32 is arranged adjacent to the side wall of the support frame 51, the material support arm 31 is spaced apart from the side wall of the support frame 51, and the second connecting long shaft 53 is fitted with a fourth limiting sleeve 35 for axial limiting between the material support arm 31 and the support frame 51.

[0081] Limiting elements are provided at the ends of the first connecting long shaft 52 and the second connecting long shaft 53, as well as at the ends of the first connecting short shaft 13, the second connecting short shaft 23 and the third connecting short shaft 33, to further limit the axial position of the gripper assembly.

[0082] The limiting elements are limiting pins, cotter pins, or retaining rings, etc.

[0083] In this embodiment, each set of material support arms 31 is provided with three leveling screws at intervals.

[0084] By adjusting the height of the leveling screw, it can be ensured that the lifting arm 31 always holds the workpiece in a horizontal or inwardly tilted position, thereby improving the stability of workpiece clamping.

[0085] Specifically, when the thickness of the clamped workpiece increases, the rotation angle of the upper jaw 11, the lower jaw 21, and the support arm 31 decreases, and the support arm 31 will be in a horizontal downward position. At this time, the height of the leveling screw 36 is adjusted according to the tilt angle of the support arm 31, so that the height of the leveling screw 36 is at the same horizontal plane or in a position where the inside is lower and the outside is higher, and it is always in contact with the bottom surface of the workpiece, thereby achieving stable support for the workpiece and improving the stability of workpiece clamping.

[0086] like Figure 8-10As shown, the drive assembly 4 also includes a guide shaft 42 that is horizontally and perpendicular to the first connecting long shaft 52. One end of the guide shaft 42 is fixedly disposed on the first connecting long shaft 52, and the other end of the guide shaft 42 passes through the support frame 51 and the mounting base 6 and is fixedly connected to the connecting plate 45.

[0087] A guide sleeve 43 is provided on the outer sleeve of the guide shaft 42, and a guide sleeve 44 is provided between the guide sleeve 43 and the guide shaft 42.

[0088] The guide sleeve 43 is fixedly mounted on the mounting base 6.

[0089] The design of guide sleeve 44 and guide sleeve 43 improves the accuracy and stability of the guide shaft 42, thereby improving the accuracy and stability of the gripper assembly in clamping the workpiece.

[0090] The telescopic mechanism is symmetrically arranged on both sides of the guide shaft 42 along the axis of the guide shaft 42, and the telescopic end is fixedly mounted on the mounting base 6. The telescopic end of the telescopic mechanism is fixedly mounted on the connecting plate 45, which is used to drive the connecting plate 45 and the guide shaft 42 to reciprocate along the axis of the guide shaft 42.

[0091] In this embodiment, the telescopic mechanism is a telescopic cylinder 41.

[0092] The support frame 51 is fixedly mounted on one end of the mounting base 6.

[0093] Mounting base 6 is fixedly connected to the robot arm (not shown).

[0094] Specifically, such as Figure 11 As shown, the telescopic cylinder 41 extends out, and through the connecting plate 45 and the guide shaft 42, it drives the first connecting long shaft 52 to move to the left along the elongated hole 511, thereby driving the upper jaw 11 and the lower jaw 21 to rotate inward towards each other to clamp the workpiece. At the same time, the material support arms 31 on both sides rotate counterclockwise upward to form auxiliary support for the workpiece, thereby achieving stable clamping of the workpiece.

[0095] Conversely, such as Figure 12 As shown, the telescopic cylinder 41 retracts, and through the connecting plate 45 and the guide shaft 42, it drives the first connecting long shaft 52 to move to the right along the elongated hole 511, thereby driving the upper jaw 11 and the lower jaw 21 to rotate outwards in opposite directions to release the workpiece. At the same time, the material support arms 31 on both sides rotate downwards clockwise to release the auxiliary support for the workpiece and realize the unloading of the workpiece.

[0096] The flange clamp provided by this utility model has the following advantages:

[0097] 1. The gripper assembly structure, with the middle gripper holding the workpiece and the two side support arms supporting it, greatly improves the stability of disc or ring-shaped workpieces during automatic clamping and loading / unloading. The guide shaft and guide sleeve improve the accuracy of the gripper assembly in clamping the workpiece and increase the workpiece clamping efficiency.

[0098] 2. The telescopic end of the telescopic mechanism is set in the opposite direction to the gripper assembly, which shortens the gripping arm of the robot arm and greatly improves the load force of the gripper assembly; at the same time, the gripper assembly is driven by a single power source to complete the gripping action simultaneously, which also greatly improves the workpiece gripping efficiency.

[0099] 3. This flange plate clamp has a compact structure, is easy to install, and is simple to operate.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A flange clamp, characterized in that, include: gripper assembly, drive assembly, and support assembly; The gripper assembly includes a first gripper assembly and a second gripper assembly. The first gripper assembly and the second gripper assembly are rotatably disposed on the support assembly in opposite directions for clamping or releasing the workpiece. The gripper assembly also includes a material support assembly, which is rotatably mounted on the support assembly and is used for auxiliary support during workpiece clamping. The drive assembly is provided with a telescopic mechanism, which is used to drive the first gripper assembly, the second gripper assembly and the material support assembly to rotate.

2. The flange clamp according to claim 1, characterized in that, The support assembly includes a support frame, which is arranged in a concave frame shape. Elongated holes are symmetrically opened on both sides of the support frame. A first connecting long shaft is movably arranged between the elongated holes along the length direction of the elongated holes for driving the first gripper assembly, the second gripper assembly and the material support assembly to rotate. The two ends of the first connecting long shaft pass through from the inside to the outside and extend out of the side wall of the support frame. A second connecting long shaft is also fixedly installed on the support frame. The second connecting long shaft is arranged parallel to the first connecting long shaft and is used for rotational support of the first gripper assembly, the second gripper assembly and the material support assembly. The two ends of the second connecting long shaft pass through from the inside out and extend out of the side wall of the support frame.

3. The flange clamp according to claim 2, characterized in that, The first gripper assembly and the second gripper assembly are disposed inside the support frame.

4. The flange clamp according to claim 2, characterized in that, The first gripper assembly includes symmetrically arranged and spaced-apart ground grippers and a first connecting rod group, wherein the upper gripper and the first connecting rod are arranged adjacent to each other in each group; One end of the upper jaw is rotatably sleeved on the first connecting short shaft, and the middle part of the upper jaw is sleeved on the second connecting long shaft, which is used for rotational support when the other end of the upper jaw approaches or moves away from the workpiece. One end of the first connecting rod is rotatably sleeved on the first connecting short shaft, and the other end is rotatably sleeved on the first connecting long shaft, for driving the upper gripper to rotate around the second connecting long shaft; The first connecting short shaft is arranged parallel to the first connecting long shaft, and a first limiting sleeve is provided on the upper part of the first connecting short shaft for axial limiting between each set of upper jaws and the first connecting rod.

5. The flange clamp according to claim 4, characterized in that, The second gripper assembly includes symmetrically and spaced-apart underground grippers and a second connecting rod group, wherein the lower gripper and the second connecting rod are arranged adjacent to each other in each group; One end of the lower jaw is rotatably sleeved on the second connecting short shaft, and the middle part of the lower jaw is sleeved on the second connecting long shaft, for rotational support when the other end of the lower jaw approaches or moves away from the workpiece; One end of the second connecting rod is rotatably sleeved on the second connecting short shaft, and the other end is rotatably sleeved on the first connecting long shaft, for driving the lower gripper to rotate around the second connecting long shaft; The second connecting short shaft is arranged parallel to the first connecting long shaft, and a second limiting sleeve is provided on the upper part of the second connecting short shaft for axial limiting between each set of lower jaws and the second connecting rod.

6. The flange clamp according to claim 5, characterized in that, The upper gripper and the lower gripper on the same side are arranged adjacent to each other.

7. The flange clamp according to claim 2, characterized in that, The material support assembly is located on the outside of the support frame and includes symmetrically arranged material support arms, a third connecting rod, and a third connecting short shaft group, with the material support arms and the third connecting rod arranged at intervals. One end of the material support arm is rotatably sleeved on the third connecting short shaft, and the middle part of the material support arm is sleeved on the second connecting long shaft, which is used for rotational support when the other end of the material support arm approaches or moves away from the workpiece. The material support arm has multiple leveling screws at intervals and threadedly connected to the material support end, which are used for horizontal support and lifting when clamping workpieces of different thicknesses. One end of the third connecting rod is rotatably sleeved on the third connecting short shaft, and the other end is rotatably sleeved on the first connecting long shaft, for driving the material support arm to rotate around the second connecting long shaft; The third connecting short shaft is arranged parallel to the first connecting long shaft, and a third limiting sleeve is fitted on the third connecting short shaft for axial limiting between the material support arm and the third connecting rod in each group; The third connecting rod is disposed adjacent to the side wall of the support frame, the material support arm is disposed at a distance from the side wall of the support frame, and a fourth limiting sleeve is sleeved on the second connecting long shaft for axial limiting between the material support arm and the support frame.

8. The flange clamp according to claim 2, characterized in that, The drive assembly also includes a guide shaft that is horizontal and perpendicular to the first connecting long axis. One end of the guide shaft is fixedly disposed on the first connecting long axis, and the other end of the guide shaft passes through the support frame and the mounting base and is fixedly connected to the connecting plate. A guide sleeve is coaxially sleeved on the outside of the guide shaft, and a guide sleeve is sleeved between the guide sleeve and the guide shaft; The guide sleeve is fixedly mounted on the mounting base.

9. The flange clamp according to claim 8, characterized in that, The telescopic mechanism is symmetrically arranged on both sides of the guide shaft along the axis of the guide shaft, and the body of the telescopic end is fixedly arranged on the mounting base. The telescopic end of the telescopic mechanism is fixedly arranged on the connecting plate, which is used to drive the connecting plate and the guide shaft to reciprocate along the axis of the guide shaft.

10. The flange clamp according to claim 8, characterized in that, The support frame is fixedly mounted on one end of the mounting base.

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