Multi-direction synchronous clamping mechanism

Abstract

The utility model discloses a multidirectional synchronous clamping mechanism which comprises a base and a shell arranged on the base, and is characterized in that a top plate is arranged at the top of the shell, n sliding grooves which are evenly distributed in the circumferential direction are formed in the top plate, n is a natural number larger than 2, clamping blocks are connected into the sliding grooves in a sliding mode, and the clamping blocks are arranged on the top plate. The upper half portions of the clamping blocks are located above the top plate, the lower half portions of the clamping blocks are fixedly connected with sliding plates, the sliding plates are slidably connected with radial sliding rails arranged on the bottom end face of the top plate, a connecting frame is arranged at the bottom of one of the n sliding plates, and the bottom end of the connecting frame is hinged to an output shaft of a driving air cylinder through a rotating shaft. The driving air cylinder is fixedly connected to the mounting base, and the mounting base is fixedly supported on the base.

Description

Technical Field

[0001] The utility model relates to the field of tooling fixtures, in particular to a multi-direction synchronous clamping mechanism. Background Technique

[0002] At present, in the machinery manufacturing industry, in heavy industries such as automobiles or excavators and other welding workshops, for the positioning and clamping of larger workpieces, a more structurally simple and practical clamping and positioning mechanism needs to be designed. Especially for the positioning of larger body parts on heavy industrial production lines, a reasonable positioning and clamping mechanism needs to be designed according to the structural characteristics of the parts. For example, in the lower body parts of excavators, the parts are large and irregular in shape, but there is often a large square opening or round hole in the middle position. Based on this structural characteristic of the part, a positioning mechanism that can achieve clamping and positioning in multiple directions simultaneously is designed.

[0003] In traditional positioning mechanisms, if there are multiple jaws, a set of independent driving mechanisms need to be set for each jaw, which leads to relatively high production costs and relatively complex related circuit and structure designs. At the same time, for this type of internal support fixture that supports in a square opening or round hole, it is necessary to ensure that the movement speeds and amplitudes of all jaws can be strictly kept consistent so as to clamp the workpiece smoothly. And to make the movements of multiple jaws driven by different driving mechanisms consistent, additional program control needs to be added, which will further increase the overall cost.

[0004] Therefore, there is a need for a method or device that can solve the above problems now. Summary of the Invention

[0005] The utility model is to solve the above-mentioned deficiencies existing in the prior art, and proposes a multi-direction synchronous clamping mechanism with a simple structure, ingenious design, reliable action, low cost and reliable clamping.

[0006] The technical solution of the utility model is: a multi-direction synchronous clamping mechanism, including a base 1, and a housing 2 is arranged on the base 1. It is characterized in that: a top plate 3 is arranged at the top of the housing 2, and n chutes 4 evenly distributed in the circumferential direction are opened on the top plate 3, where n is a natural number greater than 2.

[0007] A clamping block 5 is slidably connected in the chute 4. The upper half of the clamping block 5 is located above the top plate 3, and the lower half is fixedly connected to a sliding plate 6. The sliding plate 6 is slidably connected to a radial slide rail 7 arranged on the bottom end surface of the top plate 3. Among the n sliding plates 6, a connecting frame 8 is arranged at the bottom of one sliding plate 6. The bottom end of the connecting frame 8 is hinged to the output shaft of a driving cylinder 10 through a rotating shaft 9. The driving cylinder 10 is fixedly connected to a mounting seat 11, and the mounting seat 11 is fixedly supported on the base 1.

[0008] A rotating member 12 is also rotatably connected to the bottom end surface of the top plate 3. n connecting portions 13 evenly distributed in the circumferential direction are provided at the outer edge of the rotating member 12. One end of a connecting rod 14 is hinged to the connecting portion 13, and the other end of the connecting rod 14 is rotatably connected to a sliding plate 6 that mates with it.

[0009] Compared with the prior art, the present utility model has the following advantages:

[0010] For the multi-directional synchronous clamping mechanism of this structural form, its structure is simple, the design is ingenious, and the layout is reasonable. In view of various problems existing in the traditional clamping mechanism during the working process, a special structure is designed. It drives the rotating member to make a rotating motion through a driving mechanism (cylinder), and then uses a plurality of connecting rods connected to the rotating member to drive each sliding plate to move respectively. That is to say, the linkage of all sliding plates is realized through the rotating member and the connecting rods, so as to realize the simultaneous and synchronous movement of each clamping block; since it only requires one driving mechanism, its manufacturing cost, maintenance cost and design cost are all greatly reduced, and at the same time, the synchronism of the movement of each clamping block can be strictly guaranteed, thus ensuring the final clamping effect.

[0011] Moreover, the manufacturing process of this clamping mechanism is simple and the manufacturing cost is low. Therefore, it can be said that it has multiple advantages and is particularly suitable for popularization and application in this field, and its market prospect is very broad. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the overall structural schematic diagram of an embodiment of the present utility model

[0013] Figure 2 is the structural schematic diagram (in the upward viewing direction) of the driving cylinder and its related mechanisms in an embodiment of the present utility model.

[0014] Figure 3 is the structural schematic diagram (in the downward viewing direction) of the driving cylinder and its related mechanisms in an embodiment of the present utility model.

[0015] Figure 4 is the structural schematic diagram (in the upward viewing direction and removing the driving cylinder) of the driving cylinder and its related mechanisms in an embodiment of the present utility model.

[0016] Figure 5 is the structural schematic diagram (in the downward viewing direction) of the top plate part in an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will describe the specific embodiments of the present utility model in conjunction with the drawings. As Figures 1 to 5As shown: A multi-directional synchronous clamping mechanism, including a base 1, on which a housing 2 is provided, on the top of the housing 2, a top plate 3 is provided. On the top plate 3, n chutes 4 are opened, which are evenly distributed in the circumferential direction, where n is a natural number greater than 2.

[0018] A clamping block 5 is slidably connected in the chute 4. The upper half of the clamping block 5 is located above the top plate 3, and the lower half is fixedly connected to a slide plate 6. The slide plate 6 is slidably connected to a radial slide rail 7 provided on the bottom end face of the top plate 3. Among the n slide plates 6, a connecting frame 8 is provided at the bottom of one slide plate 6. The bottom end of the connecting frame 8 is hinged to the output shaft of a driving cylinder 10 through a rotating shaft 9. The driving cylinder 10 is fixedly connected to a mounting seat 11, and the mounting seat 11 is fixedly supported on the base 1.

[0019] A rotating member 12 is also rotatably connected to the bottom end face of the top plate 3. At the outer edge of the rotating member 12, n connecting parts 13 are provided, which are evenly distributed in the circumferential direction. The connecting part 13 is hinged to one end of a connecting rod 14, and the other end of the connecting rod 14 is rotatably connected to a matching slide plate 6.

[0020] The working process of the multi-directional synchronous clamping mechanism of the embodiment of the present utility model is as follows: When it is necessary to clamp a certain workpiece by using this mechanism, the workpiece is placed on the top plate 3 of this mechanism by using a lifting device or a manipulator, and it is necessary to ensure that all the clamping blocks 5 are located in the inner hole at the bottom of the workpiece.

[0021] In the initial state, the output shaft of the driving cylinder 10 is in the retracted state. When a clamping action is required, a signal is sent to the driving cylinder 10 through the control system. The output shaft of the driving cylinder 10 extends, driving the connecting frame 8 connected thereto to move. The connecting frame 8 drives the slide plate 6 connected thereto to move towards the outside of the top plate 3.

[0022] When one slide plate 6 moves, it will pull the connecting rod 14 connected thereto to move. Since the other end of this connecting rod 14 is hinged to the outer edge of the rotating member 12, the movement of the connecting rod 14 will pull the rotating member 12 connected to its other end to act, and the rotating member 12 starts to rotate. When the rotating member 12 rotates, it will push each slide plate 6 towards the outside of the top plate 3 through the multiple connecting rods 14 connected to its edge. That is to say, the driving cylinder 10 first drives one slide plate 6 to move. This slide plate 6 drives the rotating member 12 to rotate through the connecting rod 14, and the rotating member 12 drives all the other slide plates 6 to move synchronously through the multiple connecting rods 14, so as to realize the synchronous linkage of all the slide plates 6 (and the clamping blocks 5 thereon).

[0023] All the clamping blocks 5 move synchronously towards the outer edge direction of the top plate 3 and are tightened against the inner wall of the inner hole of the workpiece to be clamped, so as to realize the inner support type clamping.

[0024] This linkage special structure can ensure the synchronization of the actions of all clamping blocks 5, so it has a good centering effect during the clamping process;

[0025] When it is necessary to release the clamping, only need to control the driving cylinder 10 to retract, drive the rotating part 12 to rotate in the reverse direction through the connecting rod 14, and other connecting rods 14 will pull the sliding plate 6 to make a synchronous reverse movement, and all clamping blocks 5 will return to the initial state, waiting for the next clamping operation.

Claims

1. A multi-directional synchronous clamping mechanism, comprising a base (1), a housing (2) being arranged on the base (1), characterized in that: A top plate (3) is provided on the top of the housing (2), and n sliding grooves (4) are evenly distributed in a circumferential direction on the top plate (3), wherein n is a natural number greater than 2. A clamping block (5) is slidably connected in the slide groove (4); the upper half of the clamping block (5) is located above the top plate (3), and the lower half is fixedly connected to the slide plate (6); the slide plate (6) is slidably connected to a radial slide rail (7) provided on the bottom end surface of the top plate (3); among the n slide plates (6), a connecting frame (8) is provided at the bottom of one slide plate (6); the bottom end of the connecting frame (8) is hingedly connected to the output shaft of the driving cylinder (10) via a rotating shaft (9); the driving cylinder (10) is fixedly connected to a mounting seat (11), and the mounting seat (11) is fixedly supported on the base (1). A rotating member (12) is also rotatably connected to the bottom end surface of the top plate (3). The outer edge of the rotating member (12) is provided with n connecting portions (13) evenly distributed in the circumferential direction. The connecting portion (13) is hinged to one end of a connecting rod (14), and the other end of the connecting rod (14) is rotatably connected to a matching slide plate (6).

Images