Clamping mechanism capable of stably clamping bars with different lengths

Abstract

The utility model provides a clamping mechanism capable of stably clamping bars with different lengths, which comprises a frame, a plurality of groups of clamping mechanisms are positioned and mounted on the frame, each clamping mechanism comprises a first moving plate, a second moving plate, a belt pulley group and a clamping jaw, and the clamping jaws are respectively fixed at the bottom of the first moving plate and the bottom of the second moving plate. The upper end face of the belt pulley set is fixedly connected with the first clamping jaw, the lower end face of the belt pulley set is fixedly connected with the second clamping jaw, the first moving plate and the second moving plate are slidably mounted on the frame, a driving device is arranged on the first moving plate, and one end of the driving device is connected with the second moving plate. According to the clamping mechanism capable of stably clamping the bars with the different lengths, the four clamping mechanisms are symmetrically arranged on the frame from the two ends to the center, the clamping jaw in the middle can be used for clamping the short bars and can be matched with the clamping jaws on the outer sides to integrally clamp the long bars, and the clamping jaws are evenly distributed so that the bars can be evenly stressed; and the problem that the bar falls off due to insufficient grabbing force is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bar clamping mechanisms, in particular to a clamping mechanism capable of stably clamping bars of different lengths. Background Art

[0002] The bar clamping mechanism needs to cooperate with the transportation mechanism to transport the bars after clamping them. The existing bar clamping mechanism on the market has fixed jaw positions. If the double-jaw mode is used, the clamping spacing of the jaws cannot meet the clamping requirements of bars of different lengths. For heavier bars, the clamping force of the double jaws will be insufficient, and there will be problems such as the risk of falling. The four-jaw mode will cause unreasonable force distribution during grasping, affecting the transportation of the bars or causing them to deform. When encountering too short bars, there is still the problem of not being able to clamp them. At the same time, these structures cannot adapt to bars of different lengths. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The problem to be solved by the utility model is to provide a clamping mechanism which can stably clamp bars of different lengths, so as to overcome the defects of the clamping mechanism in the prior art that it cannot clamp bars of various lengths and the clamping is unstable.

[0005] (II) Technical solution

[0006] The cam is connected to the second movable plate by the second movable plate, and the cam is connected to the second movable plate by the second movable plate, and the cam is connected to the second movable plate by the second movable plate.

[0007] In some embodiments, a plurality of groups of sliders are symmetrically provided at the bottom of the first movable plate and the second movable plate, a slide rail slidably matched with the slider is provided on the upper surface of the frame, the driving device is a servo electric cylinder, the servo electric cylinder is installed on the upper surface of the first movable plate through a mounting frame, the screw rod of the servo electric cylinder is fixed to the upper surface of the second movable plate through a connecting plate, and the servo electric cylinder pushes the second movable plate to slide along the slide rail through the connecting plate.

[0008] In some embodiments, the rollers at both ends of the pulley group are rotatably mounted on the mounting plate at the bottom of the frame, and the first clamp has the same structure as the second clamp. The first clamp includes a symmetrically arranged support portion and a clamping plate fixed at the bottom of the support portion. The support portion is connected to both ends of the clamping plate, and the top of the support portion is fixed to the bottom of the first movable plate and the second movable plate, and the pulley group passes between the support portions.

[0009] In some embodiments, the support portion at the bottom of the first movable plate is fixed to the upper end of the pulley assembly via a first connecting member, and the support portion at the bottom of the second movable plate is fixed to the lower end of the pulley assembly via a second connecting member.

[0010] In some embodiments, the clamping mechanism is divided into four groups, two of which are symmetrically arranged at the front and rear ends of the frame, and the other two groups are symmetrically arranged on the inner side of the frame. A lifting column is connected to the frame, and the lifting column is connected to the bracket through a cross beam. The cross beam is slidably installed on the inner side of the bracket.

[0011] In some embodiments, a fixing plate is fixed on the crossbeam, a motor is provided on the fixing plate, a rack is fixed on one side of the lifting column, a driving gear is installed on the rotating shaft of the motor, the driving gear is meshed with the rack, and the motor drives the driving gear to drive the rack and the lifting column to lift and lower, so that the frame as a whole can be lifted and lowered, and the crossbeam allows the whole to move laterally along the bracket, so as to realize the transportation of the bar material after clamping.

[0012] (III) Beneficial effects

[0013] The utility model provides a clamping mechanism that can stably clamp rods of different lengths, wherein four clamping mechanisms are symmetrically arranged on a frame from two ends to the center, the middle clamping claw can be used to clamp shorter rods, and can clamp longer rods as a whole in cooperation with the outer clamping claws, so that the clamping mechanism can be applicable to rods of various lengths within a certain range, and the clamping claws are evenly distributed so that the rods are evenly stressed, and the problem of the rods falling off due to insufficient gripping force will not occur, and the clamping is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a three-dimensional diagram of a clamping mechanism of the utility model that can stably clamp bars of different lengths;

[0016] Figure 2 This is a three-dimensional diagram of a crossbeam and a lifting column of a clamping mechanism that can stably clamp bars of different lengths according to the utility model;

[0017] Figure 3 The utility model is a clamping mechanism that can stably clamp bars of different lengths. Figure 2 Enlarged view of part A in the middle;

[0018] Figure 4 This is a three-dimensional diagram of a frame and a clamping mechanism of the utility model that can stably clamp bars of different lengths;

[0019] Figure 5 This is a three-dimensional diagram of the frame and the bottom of a clamping mechanism that can stably clamp bars of different lengths according to the utility model;

[0020] Figure 6 This is a three-dimensional diagram of a clamping mechanism of the utility model that can stably clamp bars of different lengths;

[0021] Figure 7 The utility model is a frame of a clamping mechanism capable of stably clamping bars of different lengths and a side view of the clamping mechanism.

[0022] The names of the components corresponding to the various figure marks in the figure are: 1. first movable plate; 2. second movable plate; 3. pulley group; 4. first clamping jaw; 5. second clamping jaw; 6. slider; 7. slide rail; 8. servo cylinder; 9. mounting frame; 10. connecting plate; 11. frame; 12. mounting plate; 13. supporting part; 14. first connecting member; 15. second connecting member; 16. lifting column; 17. crossbeam; 18. bracket; 19. fixing plate; 20. motor; 21. rack; 22. driving gear. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0024] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0025] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0026] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0027] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0028] See also Figure 1 to Figure 7The utility model provides a clamping mechanism that can stably clamp bars of different lengths, including a frame 11, on which multiple groups of clamping mechanisms are positioned and installed, and the clamping mechanisms are specifically 4 groups, two of which are symmetrically arranged at the front and rear ends of the frame 11, and the other two groups are symmetrically arranged on the inner side of the frame 11, so that the bars can be uniformly clamped, so that the bars are evenly stressed and not easy to fall off. According to the lengths of different bars, 2-4 groups of clamping mechanisms can be selected for clamping; in this embodiment, the clamping mechanism includes a first movable plate 1, a second movable plate 2, a pulley group 3 and a clamping claw, wherein the clamping claw includes a first clamping claw 4 and a second clamping claw 5, which are respectively fixed at the bottom of the first movable plate 1 and the second movable plate 2, and the upper end surface of the pulley group 3 The belt is fixedly connected to the first clamping jaw 4, and the belt on the lower end surface is fixedly connected to the second clamping jaw 5, so that the belt moves synchronously with the first clamping jaw 4 and the second clamping jaw 5. The first movable plate 1 and the second movable plate 2 are both slidably mounted on the frame 11. The first movable plate 1 is provided with a driving device, and one end of the driving device is connected to the second movable plate 2. During operation, the driving device is used to push the second movable plate 2 to slide, and the second clamping jaw 5 moves accordingly to drive the pulley group 3 to operate, and the upper end surface of the pulley group 3 drives the first clamping jaw 4 to move. Since the first clamping jaw 4 and the second clamping jaw 5 are respectively fixed on the upper and lower end surfaces of the belt, and the belt circulates along the pulleys at both ends, the first clamping jaw 4 and the second clamping jaw 5 can be synchronously contracted inwardly or synchronously opened outwardly.

[0029] In some embodiments, Figure 6 and Figure 7 As shown, a plurality of groups of sliders 6 are symmetrically provided at the bottom of the first movable plate 1 and the second movable plate 2, and a slide rail 7 which slides with the slider 6 is provided on the upper surface of the frame 11; the driving device is a servo electric cylinder 8, which is installed on the upper surface of the first movable plate 1 through a mounting frame 9, and a lead screw of the servo electric cylinder 8 is fixed on the upper surface of the second movable plate 2 through a connecting plate 10, and the servo electric cylinder 8 drives the lead screw to push the connecting plate 10 and the second movable plate 2 to slide along the slide rail 7.

[0030] In some embodiments, Figure 5 As shown, the rollers at both ends of the pulley group 3 are rotatably mounted on the mounting plate 12 at the bottom of the frame 11, and the first clamping jaw 4 has the same structure as the second clamping jaw 5. The first clamping jaw 4 includes a symmetrically arranged support portion 13 and a clamping plate fixed at the bottom of the support portion 13. The middle of the clamping plate is concave and is used to clamp the rod. The support portion 13 is connected to the two ends of the clamping plate, and the top of the support portion 13 is fixed to the bottom of the first movable plate 1 and the second movable plate 2, and the pulley group 3 passes between the support portions 13; wherein the support portion 13 at the bottom of the first movable plate 1 is fixed to the upper end of the pulley group 3 through the first connecting member 14, and the support portion 13 at the bottom of the second movable plate 2 is fixed to the lower end of the pulley group 3 through the second connecting member 15, and the clamping jaws can move synchronously with the belt through the first connecting member 14 and the second connecting member 15.

[0031] In some embodiments, Figure 1 to Figure 3 As shown, a lifting column 16 is connected to the frame 11, and the lifting column 16 is connected to a bracket 18 through a crossbeam 17. The crossbeam 17 is slidably installed on the inner side of the bracket 18. A fixing plate 19 is fixed on the crossbeam 17, and a motor 20 is provided on the fixing plate 19. A rack 21 is fixed to one side of the lifting column 16, and a driving gear 22 is installed on the rotating shaft of the motor 20. The driving gear 22 is meshed with the rack 21. The motor 20 drives the driving gear 22 to operate and then drives the rack 21 to move, so that the lifting column 16 is lifted and lowered, thereby realizing the overall lifting and lowering of the frame 11 and the clamping mechanism, and the crossbeam 17 can drive the lifting column 16 to move laterally along the inner side of the bracket 18 as a whole, so as to realize the transportation of rods.

[0032] The utility model provides a clamping mechanism that can stably clamp rods of different lengths, wherein four clamping mechanisms are symmetrically arranged on a frame from two ends to the center, the middle clamping claw can be used to clamp shorter rods, and can clamp longer rods as a whole in cooperation with the outer clamping claws, so that the clamping mechanism can be applicable to rods of various lengths within a certain range, and the clamping claws are evenly distributed so that the rods are evenly stressed, and the problem of the rods falling off due to insufficient gripping force will not occur, and the clamping is more stable.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A clamping mechanism capable of stably clamping bars of different lengths, comprising a frame (11), on which a plurality of clamping mechanisms are positioned and mounted, characterized in that: The clamping mechanism comprises a first movable plate (1), a second movable plate (2), a pulley group (3) and a clamping jaw, wherein the clamping jaw comprises a first clamping jaw (4) and a second clamping jaw (5), which are respectively fixed to the bottom of the first movable plate (1) and the second movable plate (2), the belt on the upper end surface of the pulley group (3) is fixedly connected to the first clamping jaw (4), and the belt on the lower end surface is fixedly connected to the second clamping jaw (5), the first movable plate (1) and the second movable plate (2) are slidably mounted on the frame (11), the first movable plate (1) is provided with a driving device, and one end of the driving device is connected to the second movable plate (2); The frame (11) is connected to a lifting column (16), the lifting column (16) is connected to a bracket (18) via a crossbeam (17), and the crossbeam (17) is slidably mounted on the inner side of the bracket (18); The driving device is used to push the second movable plate (2) to slide, and the second clamping jaw (5) moves accordingly to drive the pulley group (3) to operate, and the upper end surface of the pulley group (3) drives the first clamping jaw (4) to move, so that the first clamping jaw (4) and the second clamping jaw (5) are synchronously contracted inwardly or synchronously opened outwardly.

2. The clamping mechanism capable of stably clamping bars of different lengths as claimed in claim 1, characterized in that: The bottoms of the first movable plate (1) and the second movable plate (2) are symmetrically provided with a plurality of sets of sliding blocks (6), and the upper surface of the frame (11) is provided with sliding rails (7) that are slidably matched with the sliding blocks (6).

3. The clamping mechanism capable of stably clamping bars of different lengths as claimed in claim 1, characterized in that: The driving device is a servo electric cylinder (8), which is mounted on the upper surface of the first movable plate (1) via a mounting frame (9), and the lead screw of the servo electric cylinder (8) is fixed to the upper surface of the second movable plate (2) via a connecting plate (10).

4. The clamping mechanism capable of stably clamping bars of different lengths as claimed in claim 1, characterized in that: The rollers at both ends of the pulley group (3) are rollingly mounted on a mounting plate (12) at the bottom of the frame (11).

5. The clamping mechanism capable of stably clamping bars of different lengths as claimed in claim 1, characterized in that: The first clamping jaw (4) has the same structure as the second clamping jaw (5). The first clamping jaw (4) comprises a symmetrically arranged supporting portion (13) and a clamping plate fixed at the bottom of the supporting portion (13). The supporting portion (13) is connected to both ends of the clamping plate. The top of the supporting portion (13) is fixed to the bottom of the first movable plate (1) and the second movable plate (2). The pulley group (3) passes between the supporting portions (13).

6. The clamping mechanism capable of stably clamping bars of different lengths as claimed in claim 1, characterized in that: The support portion (13) at the bottom of the first movable plate (1) is fixed to the upper end of the pulley group (3) via a first connecting member (14), and the support portion (13) at the bottom of the second movable plate (2) is fixed to the lower end of the pulley group (3) via a second connecting member (15).

7. The clamping mechanism capable of stably clamping bars of different lengths as claimed in claim 1, characterized in that: The clamping mechanisms are divided into four groups, two of which are symmetrically arranged at the front and rear ends of the frame (11), and the other two groups are symmetrically arranged on the inner sides of the frame (11).

8. The clamping mechanism capable of stably clamping bars of different lengths as claimed in claim 1, characterized in that: A fixing plate (19) is fixed on the crossbeam (17), a motor (20) is provided on the fixing plate (19), a rack (21) is fixed on one side of the lifting column (16), a driving gear (22) is installed on the rotating shaft of the motor (20), and the driving gear (22) is meshed with the rack (21).

Images