Clamping device

Abstract

The utility model relates to the technical field of material taking and placing equipment, in particular to a clamping device which comprises a center block, an opening and closing driving mechanism and two clamping pieces, the two clamping pieces are located on the two sides of the center block respectively, each clamping piece comprises an installation block, an elastic piece and a clamping block which are sequentially connected, the installation blocks are arranged on the side faces of the center block, and the elastic pieces are arranged on the clamping blocks. An elastic deformation space is formed between the elastic pieces and the side face of the center block, a movable space is formed between the clamping blocks and the side face of the center block, the end face of the center block and the clamping ends of the clamping blocks of the two clamping pieces form a clamping space, and the elastic pieces of the two clamping pieces are different in thickness. The opening and closing driving mechanism is used for driving the clamping blocks of the two clamping pieces to be close to or away from each other. The flexible material clamping device is simple in structure, flexible clamping of materials is achieved, the clamping blocks of the two clamping pieces move in sequence, displacement is not prone to occurring when the materials are clamped, and the stability of material clamping is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material picking and placing equipment, in particular to a clamping device. Background Art

[0002] On September 12, 2019, the applicant applied for a Chinese patent document with the application number 201921526717.4, which discloses an optical lens clamping mechanism, including a fixed seat and a clamping device arranged on the fixed seat. The clamping device includes a clamping fixed block arranged on the fixed seat, a middle chuck arranged in the middle of the clamping fixed block, a left chuck and a right chuck slidably arranged on the clamping fixed block and respectively located on both sides of the middle chuck, and a chuck moving driving device for driving the left chuck and the right chuck to approach or move away from the middle chuck synchronously; the clamping ends of the left chuck and the right chuck both protrude from the bottom end of the middle chuck, and the parts of the left chuck and the right chuck protruding from the middle chuck and the bottom end of the middle chuck enclose a clamping cavity for accommodating an external optical lens. This patent document drives the left chuck and the right chuck to approach or move away from the middle chuck synchronously through the chuck moving driving device, which makes it easy for the optical lens to shift when being clamped, resulting in poor stability of clamping the optical lens. Therefore, the defect is very obvious and a solution is urgently needed. Summary of the Utility Model

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a clamping device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A clamping device includes a central block, an opening and closing driving mechanism, and two clamping members. The two clamping members are respectively located on both sides of the central block. The clamping member includes an installation block, a spring piece, and a clamping block connected in sequence. The installation block is installed on the side surface of the central block. There is an elastic deformation space between the spring piece and the side surface of the central block, and there is a moving space between the clamping block and the side surface of the central block. The end surface of the central block and the clamping ends of the clamping blocks of the two clamping members form a clamping space. The thicknesses of the spring pieces of the two clamping members are different. The opening and closing driving mechanism is used to drive the clamping blocks of the two clamping members to approach or move away from each other.

[0006] Further, the opening and closing driving mechanism includes a telescopic driver and a pull rod. The main body of the telescopic driver is installed on the clamping block of one clamping member. The telescopic end of the telescopic driver is connected to one end of the pull rod, and the other end of the pull rod is connected to the clamping block of the other clamping member.

[0007] Furthermore, the center block is provided with a center hole, and the clamping blocks of the two clamping members are provided with through holes, which are coaxially arranged with the center hole. The main body of the telescopic driver is installed on the outer side surface of the clamping block of one clamping member, and the end of the pull rod away from the telescopic driver is detachably connected with a resistance rod, which passes through a through hole, the center hole and another through hole in sequence, and the resistance rod is used to resist the outer side surface of the clamping block of the other clamping member.

[0008] Furthermore, the diameter of the through hole and the diameter of the central hole are both larger than the diameter of the pull rod.

[0009] Furthermore, the telescopic driver is a cylinder.

[0010] Furthermore, the end surface of the center block is provided with a suction hole.

[0011] Further, the central block is connected with a connecting arm.

[0012] The beneficial effects of the utility model are as follows: in actual application, the clamping device moves to the material, the material is located in the clamping space, and the end face of the center block contacts the top face of the material, and then the opening and closing drive mechanism applies a force to the clamping blocks of the two clamping members to move closer to each other. Since the thickness of the spring pieces of the two clamping members is different, the spring pieces of the two clamping members will be elastically deformed successively under the action of the force, so that the clamping block of one clamping member first approaches one side of the material and serves as the positioning reference of the material, and the clamping block of the other clamping member then approaches the other side of the material, so that the clamping blocks of the two clamping members move closer to the center block successively, until the clamping blocks of the two clamping members clamp the material in the clamping space. When it is necessary to release the material, the opening and closing drive mechanism releases the force on the clamping blocks of the two clamping members, and the spring pieces of the two clamping members will elastically recover and drive the corresponding clamping blocks to reset, so that the two clamping members are opened to release the material. The utility model has a simple structure and can realize flexible clamping of materials. The clamping blocks of the two clamping members move successively, so that the materials are not easily displaced when clamped, thereby improving the stability of the clamped materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 It is a cross-sectional view of the utility model.

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the clamping member of the utility model.

[0016] Description of reference numerals:

[0017] 1. Center block; 2. Opening and closing drive mechanism; 3. Clamping piece; 4. Mounting block; 5. Spring piece; 6. Clamping block; 7. Elastic deformation space; 8. Activity space; 9. Clamping space; 10. Telescopic drive; 11. Pull rod; 12. Center hole; 13. Through hole; 14. Suction hole; 15. Connecting arm; 16. Resistance rod. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0019] like Figures 1 to 3 As shown, the utility model provides a clamping device, which includes a center block 1, an opening and closing driving mechanism 2 and two clamping members 3, the two clamping members 3 are respectively located on both sides of the center block 1, the clamping member 3 includes a mounting block 4, a spring piece 5 and a clamping block 6 connected in sequence, the mounting block 4 is installed on the side of the center block 1, an elastic deformation space 7 is provided between the spring piece 5 and the side of the center block 1, a movable space 8 is provided between the clamping block 6 and the side of the center block 1, a clamping space 9 is formed between the end face of the center block 1 and the clamping ends of the clamping blocks 6 of the two clamping members 3, the thicknesses of the spring pieces 5 of the two clamping members 3 are different, and the opening and closing driving mechanism 2 is used to drive the clamping blocks 6 of the two clamping members 3 to move closer to or away from each other.

[0020] In actual application, the clamping device moves to the material, the material is located in the clamping space 9, and the end surface of the center block 1 contacts the top surface of the material, and then the opening and closing driving mechanism 2 applies a force to the clamping blocks 6 of the two clamping members 3 to approach each other. Since the thickness of the spring pieces 5 of the two clamping members 3 is different, the spring pieces 5 of the two clamping members 3 will be elastically deformed successively under the action of the force, so that the clamping block 6 of one clamping member 3 first approaches one side of the material and serves as the positioning reference of the material, and the clamping block 6 of the other clamping member 3 approaches the other side of the material, so that the clamping blocks 6 of the two clamping members 3 are successively close to the center block 1 until the clamping blocks 6 of the two clamping members 3 clamp the material in the clamping space 9. When it is necessary to release the material, the opening and closing driving mechanism 2 releases the force on the clamping blocks 6 of the two clamping members 3, and the spring pieces 5 of the two clamping members 3 will elastically recover and drive the corresponding clamping blocks 6 to reset, so that the two clamping members 3 are opened to release the material. The utility model has a simple structure and can realize flexible clamping of materials. The clamping blocks 6 of the two clamping members 3 move successively, so that the materials are not easily displaced when clamped, thereby improving the stability of the clamped materials.

[0021] In this embodiment, the opening and closing driving mechanism 2 includes a telescopic driver 10 and a pull rod 11. The main body of the telescopic driver 10 is installed on the clamping block 6 of a clamping member 3. The telescopic end of the telescopic driver 10 is connected to one end of the pull rod 11, and the other end of the pull rod 11 is connected to the clamping block 6 of the other clamping member 3. In practical applications, the telescopic end of the telescopic driver 10 drives the pull rod 11 to telescopically move, so that the clamping blocks 6 of the two clamping members 3 can open and close.

[0022] In this embodiment, the central block 1 is provided with a central hole 12. The clamping blocks 6 of the two clamping members 3 are both provided with through holes 13. The through holes 13 are coaxially arranged with the central hole 12. The main body of the telescopic driver 10 is installed on the outer side surface of the clamping block 6 of a clamping member 3. The end of the pull rod 11 far from the telescopic driver 10 is detachably connected with a resisting rod 16. The pull rod 11 sequentially passes through a through hole 13, the central hole 12 and the other through hole 13. The resisting rod 16 is used to resist the outer side surface of the clamping block 6 of the other clamping member 3. The aperture of the through hole 13 and the aperture of the central hole 12 are both larger than the diameter of the pull rod 11. In practical applications, when the telescopic end of the telescopic driver 10 retracts, the pull rod 11 will drive the resisting rod 16 to move towards the direction close to the central block 1, so that the resisting rod 16 resists the corresponding clamping block 6 of the clamping member 3 to approach the central block 1. The clamping block 6 of the other clamping member 3 also approaches the central block 1 under the pulling of the main body of the telescopic driver 10 until the clamping blocks 6 of the two clamping members 3 clamp the material. When the telescopic end of the telescopic driver 10 extends, the pull rod 11 will drive the resisting rod 16 to move towards the direction away from the central block 1, so that the clamping blocks 6 of the two clamping members 3 gradually return to their original states under the resilience of the corresponding elastic pieces 5.

[0023] In this embodiment, the telescopic driver 10 is a cylinder.

[0024] In this embodiment, the end face of the central block 1 is provided with a suction hole 14. Before or when clamping the material, the material is sucked through the suction hole 14, which further improves the stability of clamping the material.

[0025] In this embodiment, the central block 1 is connected with a connecting arm 15. The setting of the connecting arm 15 facilitates the connection of the present utility model with an external structure (such as a manipulator, etc.).

[0026] All the technical features in this embodiment can be freely combined according to actual needs.

[0027] The above embodiments are the preferred implementation solutions of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present utility model.

Claims

1. A clamping device, characterized in that: The invention comprises a central block (1), an opening and closing driving mechanism (2) and two clamping members (3), wherein the two clamping members (3) are respectively located on both sides of the central block (1), the clamping member (3) comprises a mounting block (4), a spring sheet (5) and a clamping block (6) which are connected in sequence, the mounting block (4) is mounted on the side of the central block (1), an elastic deformation space (7) is provided between the spring sheet (5) and the side of the central block (1), an activity space (8) is provided between the clamping block (6) and the side of the central block (1), a clamping space (9) is formed between the end surface of the central block (1) and the clamping ends of the clamping blocks (6) of the two clamping members (3), the thicknesses of the spring sheets (5) of the two clamping members (3) are different, and the opening and closing driving mechanism (2) is used for driving the clamping blocks (6) of the two clamping members (3) to move closer to or farther from each other.

2. A clamping device according to claim 1, characterized in that: The opening and closing drive mechanism (2) comprises a telescopic drive (10) and a pull rod (11); the main body of the telescopic drive (10) is mounted on a clamping block (6) of a clamping member (3); the telescopic end of the telescopic drive (10) is connected to one end of the pull rod (11); and the other end of the pull rod (11) is connected to the clamping block (6) of another clamping member (3).

3. A clamping device according to claim 2, characterized in that: The center block (1) is provided with a center hole (12), and the clamping blocks (6) of the two clamping members (3) are both provided with through holes (13), and the through holes (13) are coaxially arranged with the center hole (12). The main body of the telescopic driver (10) is installed on the outer side surface of the clamping block (6) of one clamping member (3), and the end of the pull rod (11) away from the telescopic driver (10) is detachably connected with a resistance rod (16), and the pull rod (11) passes through a through hole (13), the center hole (12) and another through hole (13) in sequence, and the resistance rod (16) is used to resist the outer side surface of the clamping block (6) of the other clamping member (3).

4. A clamping device according to claim 3, characterized in that: The diameter of the through hole (13) and the diameter of the central hole (12) are both larger than the diameter of the pull rod (11).

5. A clamping device according to any one of claims 2 to 4, characterized in that: The telescopic driver (10) is a cylinder.

6. A clamping device according to claim 1, characterized in that: The end surface of the central block (1) is provided with a suction hole (14).

7. A clamping device according to claim 1, characterized in that: The central block (1) is connected with a connecting arm (15).

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