High-stability rod clamping mechanism

Abstract

A high-stability rod clamping mechanism comprises a mounting plate, a clamping assembly, and a driving device. The mounting plate comprises a mounting plate and a sliding piece. The mounting plate comprises a mounting plate body, a first waist-shaped hole, a sliding rail, and a fulcrum pivot shaft. The sliding piece comprises a sliding plate, a sliding block, a second waist-shaped hole, a following clamping claw, and a connecting part. The clamping assembly comprises a first clamping assembly and a second clamping assembly. The first clamping assembly comprises a first connecting rod, a first bent arm, and a first clamping claw. The second clamping assembly comprises a second connecting rod, a second bent arm, and a second clamping claw. By arranging the sliding rail and the sliding block, the stability of the sliding plate during reciprocating motion is maintained. The following clamping claw arranged on the sliding plate cooperates with the first clamping rod and the second clamping rod to form a three-point grabbing, and the stability during grabbing of the rod is higher.

Description

Technical Field

[0001] This utility model relates to the field of clamping device technology, and in particular to a high-stability rod-shaped clamping mechanism. Background Technology

[0002] With the gradual development of the manufacturing industry, the use of clamping fixtures in workpiece processing is increasing, and the requirements for these fixtures are also becoming more stringent. Existing clamping fixtures require different clamps for different types of rod-shaped workpieces. Furthermore, the length and diameter of the rod-shaped workpieces clamped by existing fixtures are mostly fixed, significantly reducing their practicality and preventing adjustment according to actual needs. To address the problems exposed in the use of current clamping fixtures, it is necessary to improve and optimize the structure of general-purpose mechanical clamping fixtures for rod-shaped workpieces.

[0003] Application number CN202220196155.7 discloses a general-purpose mechanical clamping fixture for rod-shaped workpieces, including a worktable. Two clamping assemblies capable of opposing displacement are symmetrically arranged on the upper surface of the worktable. Each clamping assembly includes a vertically arranged support rod and a support frame whose top end is horizontally bent and fixedly connected. A drive ring is rotatably connected to the middle of the support frame, and a clamping ring is horizontally fixedly installed inside the support frame. A locking assembly for locking the workpiece is provided on the inner side of the clamping ring. By sliding a clamping plate on the clamping ring, the clamping plate can be adjusted according to the diameter of the rod-shaped workpiece, thereby enabling the clamping of rod-shaped workpieces of different diameters. Simultaneously, under the action of an adjustment mechanism, the distance between the two clamping mechanisms can be adjusted, thus enabling the clamping of rod-shaped workpieces of different lengths.

[0004] The above solution provides fewer support points on the surface of the rod-shaped workpiece when clamping it, resulting in fewer support points on the workpiece surface.

[0005] It has poor stability and is prone to shaking, which affects the structural stability of the clamping fixture. Summary of the Invention

[0006] In view of this, the present invention provides a highly stable rod-shaped clamping mechanism to solve the above-mentioned technical problems.

[0007] A high-stability rod-shaped clamping mechanism includes a mounting plate, a clamping assembly disposed on the mounting plate, and a driving device disposed on one end of the mounting plate and connected to the clamping assembly. The mounting plate includes a mounting plate and a sliding member slidably disposed on the mounting plate. The mounting plate includes a mounting plate body, a first oblong hole disposed in the mounting plate body, a slide rail fixedly disposed in the first oblong hole, and a pivot shaft perpendicularly disposed at one end of the mounting plate body. The sliding member includes a sliding plate, a sliding block disposed at one end of the sliding plate facing the slide rail end face, a second oblong hole disposed in a region of the sliding plate, a follower gripper disposed at the end of the sliding plate away from the sliding block, and a connecting portion disposed at the end of the sliding plate near the sliding block. The clamping assembly includes a first clamping assembly and a second clamping assembly pivotally connected to the first clamping assembly. The first clamping assembly includes a first connecting rod, a first bent arm pivotally connected to one end of the first connecting rod, and a first gripper disposed at the other end of the first bent arm. The second clamping assembly includes a second connecting rod, a second bent arm pivotally connected to one end of the second connecting rod, and a second gripper on the other end of the second bent arm. The first connecting rod and the second connecting rod are pivotally connected to each other, and the pivot joint is accommodated in the connecting portion and pivotally fixed through the connecting hole. The two ends of the first bent arm are bent along the middle region, and the included angle between the central axes of the two ends is an obtuse angle. A first pivot hole is provided on the side of the bend of the first bent arm facing away from the obtuse angle. The two ends of the second bent arm are bent along the middle region, and the included angle between the central axes of the two ends is an obtuse angle. A second pivot hole is provided on the side of the bend of the second bent arm facing away from the obtuse angle. The first pivot hole and the second pivot hole are pivotally fixed to each other and sleeved on the fulcrum pivot shaft. A first positioning groove is provided on the end face of the first gripper facing the first bent arm, and a first clamping rod is provided on the end of the first gripper away from the first positioning groove. A second positioning groove is provided on the end face of the second gripper facing the second bent arm. A first clamping rod is provided on the end of the first gripper that is away from the second positioning groove.

[0008] Furthermore, the two ends of the waist-shaped hole are provided along the two ends of the length of the mounting plate body, and are located in the middle region of the mounting plate body.

[0009] Furthermore, the slide rail has openings at both ends along the length of the mounting plate body.

[0010] Furthermore, the two ends of the sliding block are arranged along the two ends of the length of the sliding plate and are slidably disposed in the slide rail.

[0011] Furthermore, the diameter of the second waist-shaped hole is larger than the diameter of the pivot shaft.

[0012] Furthermore, the connecting part is L-shaped, with one end fixedly mounted on one end of the sliding plate, and the other end facing the pivot axis and parallel to the sliding plate.

[0013] Furthermore, a connection hole is provided on the end face of the connecting part that is parallel to the sliding plate.

[0014] Furthermore, a step is provided on the end of the first bent arm away from the first connecting rod.

[0015] Furthermore, both the first and second grippers have arc-shaped grooves on their opposite end faces.

[0016] Furthermore, the driving device includes a telescopic cylinder and a connector that connects the connecting part to the movable end of the telescopic cylinder.

[0017] Compared with existing technologies, the high-stability rod-shaped component clamping mechanism provided by this utility model maintains the stability of the sliding plate during reciprocating motion by setting the slide rail and a sliding block slidably disposed in the slide rail. A follower gripper is provided on the sliding plate, which cooperates with the first and second gripping rods to form a three-point gripping mechanism, resulting in higher stability when gripping rod-shaped components. Attached Figure Description

[0018] Figure 1 A schematic diagram of a high-stability rod-shaped clamping mechanism provided by this utility model.

[0019] Figure 2 for Figure 1 An exploded view of the high-stability rod-shaped clamping mechanism. Detailed Implementation

[0020] The specific embodiments of this utility model are described in further detail below. It should be understood that the description of the embodiments of this utility model herein is not intended to limit the scope of protection of this utility model.

[0021] like Figures 1 to 2 The diagram shows a structural schematic of a high-stability rod-shaped clamping mechanism provided by this utility model. The high-stability rod-shaped clamping mechanism includes a mounting plate 10, a clamping component 20 disposed on the mounting plate 10, and a driving device 30 disposed on the mounting plate 10 with one end connected to the clamping component 20. It is conceivable that the high-stability rod-shaped clamping mechanism also includes other functional structures, such as connecting members, etc., which are technologies known to those skilled in the art and will not be described in detail here.

[0022] The mounting plate 10 includes a mounting plate 11 and a slider 12 slidably disposed on the mounting plate 11.

[0023] The mounting plate 11 includes a mounting plate body 111, a first oblong hole 112 disposed in the mounting plate body 111, a slide rail 113 fixedly disposed in the first oblong hole 112, and a pivot shaft 114 vertically disposed on one end of the mounting plate body 111.

[0024] The width of the mounting plate body 111 on the side away from the pivot shaft 114 is greater than the width at the other end, for providing screw holes for screwing onto external equipment. The oblong hole 112 is located at both ends along the length of the mounting plate body 111 and in the middle region of the mounting plate body 111, reducing weight and for mounting the slide rail 113. The size of the oblong hole 112 can be adjusted according to the size of the slide rail 113 to accommodate different sizes of the slide rail 113. The two openings of the slide rail 113 are located at both ends along the length of the mounting plate body 111, allowing the sliding member 12 to slide along the central axis of the mounting plate 111.

[0025] The pivot shaft 114 is vertically disposed on the mounting plate body 111 and is used to pass through the sliding member 12 and connect to the clamping assembly 20. The clamping assembly 20 will be described below.

[0026] The sliding member 12 includes a sliding plate 121, a sliding block 122 disposed on one end of the sliding plate 121 facing the end face of the slide rail 113, a second oblong hole 123 disposed in a region of the sliding plate 121, a follower gripper 124 disposed on the end of the sliding plate 121 away from the sliding block 122, and a connecting portion 125 disposed on the end of the sliding plate 121 near the end of the sliding block 122. The sliding plate 121 is connected to the driving device 30 through the connecting portion 125, and the driving device 30 outputs power to make it reciprocate along its length axis. The two ends of the sliding block 122 are disposed along the two ends of the length of the sliding plate 121 and are slidably disposed in the slide rail 113 to guide the direction of the sliding plate 121 during reciprocating motion and prevent it from swaying excessively. The diameter of the second oblong hole 123 is larger than the diameter of the pivot shaft 114, allowing the pivot shaft 114 to pass through the second oblong hole 123 and connect to the clamping assembly 20. The second oblong hole 123 also serves to avoid interference between the sliding plate 121 and the pivot shaft 114 during reciprocating motion.

[0027] The follower gripper 124 is vertically fixed on the sliding plate 121 and reciprocates together with the sliding plate 121. The connecting part 125 is L-shaped, with one end fixed on one end of the sliding plate 121 and the other end facing the pivot shaft 114 and parallel to the sliding plate 121. A connecting hole 126 is provided on the end face of the connecting part 125 parallel to the sliding plate 121 for connecting the clamping assembly 20.

[0028] The clamping assembly 20 includes a first clamping assembly 21 and a second clamping assembly 22 pivotally connected to the first clamping assembly 21.

[0029] The first clamping assembly 21 includes a first link 211, a first bent arm 212 pivotally connected to one end of the first link 211, and a first gripper 213 disposed on the other end of the first bent arm 212. The second clamping assembly 22 includes a second link 221, a second bent arm 222 pivotally connected to one end of the second link 221, and a second gripper 223 disposed on the other end of the second bent arm 222.

[0030] Please see Figure 1 as well as Figure 2 The first link 211 and the second link 221 are pivotally connected to each other, and the pivot joint is accommodated in the connecting part 125 and is pivotally fixed through the connecting hole 126.

[0031] The two ends of the first bent arm 212 are bent along the middle region, and the included angle between the central axes of the two ends is an obtuse angle. A first pivot hole 214 is provided on the side of the first bent arm 212 facing away from the obtuse angle at the _______ bend.

[0032] The two ends of the second bent arm 222 are bent along the middle region, and the included angle between the central axes of the two ends is an obtuse angle. A second pivot hole 224 is provided on the side of the bend of the second bent arm 222 facing away from the obtuse angle.

[0033] The first pivot hole 214 and the second pivot hole 224 are pivotally connected and fixed to each other, and are sleeved on the fulcrum pivot shaft 114. A step is provided on the bent arm that is spaced far from the sliding plate 121 to keep the end faces of the first bent arm 212 and the second bent arm 222 flush. In this embodiment, the first bent arm 212 is spaced far from the sliding plate 121; therefore, a step 215 is provided on the end of the first bent arm 212 away from the first connecting rod 211 to ensure that the end faces of the first bent arm 212 and the second bent arm 222 are on the same horizontal plane.

[0034] Both the first gripper 213 and the second gripper 223 have arc-shaped grooves on their opposite end faces to facilitate clamping the rod-shaped parts.

[0035] The first gripper 213 has a first positioning groove 216 on its end face facing the first bent arm 212, which is used for quick positioning when fixed with the first bent arm 212 to reduce errors. The first gripper 231 has a first clamping rod 217 on its end away from the first positioning groove 216, which is used to assist in clamping the rod-shaped part.

[0036] The second gripper 223 has a second positioning groove 225 on its end face facing the second bent arm 222, which is used for quick positioning when fixed with the second bent arm 222 to reduce errors. The first gripper 231 has a first clamping rod 226 on its end away from the second positioning groove 225, which is also used to assist in clamping the rod-shaped part.

[0037] The drive device 30 includes a telescopic cylinder 31 and a connector 32 that connects the connecting part 125 to the movable end of the telescopic cylinder 31.

[0038] In use, the mounting plate 11 is fixedly mounted to an external device. The telescopic cylinder 31 drives the sliding plate 121 to reciprocate along its own length, causing the pivot shaft 114 to move within the second oblong hole 123. When the telescopic cylinder 31 extends, the sliding plate 121 moves in the same direction as the movable end of the telescopic cylinder 31. At this time, the first connecting rod 211 and the second connecting rod 221 are pivotally fixed in the connecting part 125 through the connecting hole 126. The first pivot hole 214 and the second pivot hole 224 are pivotally connected to the pivot shaft 114. When the sliding plate 121 moves away from the driving device 30 along its length, the angle between the first connecting rod 211 and the second connecting rod 221 increases, driving the first bent arm 212 and the second bent arm 222, which are respectively connected to the first connecting rod 211 and the second connecting rod 221, to rotate along the pivot joint, making the angle between the first bent arm 212 and the second bent arm 222 smaller, thereby driving the first gripper 213 and the second gripper 223 to clamp, and cooperating with the follower gripper 124 to play a stable clamping role on the rod-shaped member.

[0039] Compared with the prior art, the high-stability rod-shaped component clamping mechanism provided by this utility model maintains the stability of the sliding plate 121 during reciprocating motion by setting the slide rail 113 and the sliding block 122 slidably disposed in the slide rail 113. A follower gripper 124 is provided on the sliding plate 121, which cooperates with the first gripping rod 217 and the second gripping rod 226 to form a three-point gripping, which has higher stability when gripping rod-shaped components.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.

Claims

1. A high-stability rod-shaped clamping mechanism, characterized in that: The high-stability rod-shaped clamping mechanism includes a mounting plate, a clamping assembly disposed on the mounting plate, and a driving device disposed on one end of the mounting plate and connected to the clamping assembly. The mounting plate includes a mounting plate and a sliding member slidably disposed on the mounting plate. The mounting plate includes a mounting plate body, a first oblong hole disposed in the mounting plate body, a slide rail fixedly disposed in the first oblong hole, and a pivot shaft perpendicularly disposed on one end of the mounting plate body. The sliding member includes a sliding plate, a sliding block disposed on one end of the sliding plate facing the slide rail end face, a second oblong hole disposed in a region of the sliding plate, a follower gripper disposed on the end of the sliding plate away from the sliding block, and a connecting portion disposed on the end of the sliding plate near the sliding block. The clamping assembly includes a first clamping assembly and a second clamping assembly pivotally connected to the first clamping assembly. The first clamping assembly includes a first connecting rod, a first bent arm pivotally connected to one end of the first connecting rod, and a first gripper disposed on the other end of the first bent arm. The second... The clamping assembly includes a second link, a second bent arm pivotally connected to one end of the second link, and a second gripper on the other end of the second bent arm. A connecting hole is provided on the end face of the connecting portion parallel to the sliding plate. The first link and the second link are pivotally connected to each other, and the pivot joint is accommodated in the connecting portion and pivotally fixed through the connecting hole. Both ends of the first bent arm are bent along the middle region, and the included angle between the central axes of the two ends is an obtuse angle. A first pivot hole is provided on the side of the first bent arm facing away from the obtuse angle at the bend. Both ends of the second bent arm are bent along the middle region... The area is bent, and the included angle between the central axes of the two ends is an obtuse angle. A second pivot hole is provided on the side of the bend of the second bent arm facing away from the obtuse angle. The first pivot hole and the second pivot hole are pivotally fixed to each other and are sleeved on the pivot shaft of the fulcrum. A first positioning groove is provided on the end face of the first gripper facing the first bent arm. A first clamping rod is provided on the end of the first gripper away from the first positioning groove. A second positioning groove is provided on the end face of the second gripper facing the second bent arm. A first clamping rod is provided on the end of the first gripper away from the second positioning groove.

2. The high-stability rod-shaped clamping mechanism as described in claim 1, characterized in that: The waist-shaped hole is provided at both ends along the length of the mounting plate body and is located in the middle region of the mounting plate body.

3. The high-stability rod-shaped clamping mechanism as described in claim 1, characterized in that: The slide rail has openings at both ends along the length of the mounting plate body.

4. The high-stability rod-shaped clamping mechanism as described in claim 1, characterized in that: The two ends of the sliding block are arranged along the two ends of the length of the sliding plate and are slidably disposed in the slide rail.

5. The high-stability rod-shaped clamping mechanism as described in claim 1, characterized in that: The diameter of the second waist-shaped hole is larger than the diameter of the pivot shaft.

6. The high-stability rod-shaped clamping mechanism as described in claim 1, characterized in that: The connecting part is L-shaped, with one end fixedly mounted on one end of the sliding plate, and the other end facing the pivot axis and parallel to the sliding plate.

7. The high-stability rod-shaped clamping mechanism as described in claim 1, characterized in that: A step is provided on the end of the first bent arm away from the first connecting rod.

8. The high-stability rod-shaped clamping mechanism as described in claim 1, characterized in that: Both the first and second grippers have arc-shaped grooves on their opposite end faces.

9. The high-stability rod-shaped clamping mechanism as described in claim 1, characterized in that: The drive device includes a telescopic cylinder and a connector that connects the connecting part to the movable end of the telescopic cylinder.

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