Flexible pneumatic parallel clamping jaw device

Abstract

The utility model discloses a flexible pneumatic parallel clamping jaw device which comprises a fixed seat, a flexible clamping assembly, a connecting rod mechanism and a pneumatic driving assembly, the flexible clamping assembly comprises two clamping arms which are oppositely and movably arranged on the fixed seat, and the connecting rod mechanism comprises two swing parts which are oppositely arranged. Each swing part comprises a first connecting rod and a second connecting rod, the middle of the first connecting rod is hinged to the side wall of the fixing base, one end of the first connecting rod is hinged to the corresponding clamping arm, the other end of the first connecting rod is hinged to one end of the second connecting rod, and the end, opposite to the first connecting rod, of the second connecting rod is hinged to a pneumatic driving assembly arranged on the fixing base. The pneumatic clamping device is simple in structure and light in weight, the two clamping arms are driven by the pneumatic driving assembly through the connecting rod mechanism to move face to face or back to back on the fixing base so as to clamp objects, and the gripping force is high.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a flexible pneumatic parallel clamping jaw device. Background Art

[0002] In industrial production, clamps are often needed to clamp objects or transfer them. In actual production, there are many types of parts that need to be clamped and their specifications vary. If each part is equipped with a dedicated clamp, the cost will be too high, so many electric grippers have appeared. Traditional electric grippers are usually driven by a separate motor for each gripper. The motor is generally connected to the drive shaft through a gear transmission structure and a coupling structure. The structure is relatively complex and inconvenient to use. It is easy to deviate during the clamping process, resulting in inaccurate travel position and the object may fall off during the clamping process due to insufficient gripping force. Utility Model Content

[0003] The utility model aims to provide a flexible pneumatic parallel clamping jaw device which is light in weight, easy to use and has strong gripping force, so as to solve the problem that the electric clamping jaw structure is relatively complex and inconvenient to use proposed in the above background technology.

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

[0005] A flexible pneumatic parallel clamping device includes a fixed seat, a flexible clamping assembly, a connecting rod mechanism and a pneumatic drive assembly, wherein the flexible clamping assembly includes two clamping arms relatively and movably arranged on the fixed seat, the connecting rod mechanism includes two swinging parts relatively arranged, each of the swinging parts includes a first connecting rod and a second connecting rod, the middle part of the first connecting rod is hinged on the side wall of the fixed seat, one end of the first connecting rod is hinged on the corresponding clamping arm, and the other end is hinged to one end of the second connecting rod, and the second connecting rod is hinged to the pneumatic drive assembly arranged on the fixed seat relative to one end of the first connecting rod.

[0006] Preferably, a hinge groove is provided at the hinged position between the clamp arm and the first connecting rod, and a pin is passed through the hinge groove.

[0007] Preferably, an elongated hole is provided at one end of the first connecting rod hinged to the clamp arm along the length direction of the rod, and the pin passes through the elongated hole to hinge the first connecting rod in the hinge groove.

[0008] Preferably, a linear guide rail is provided at the bottom of the fixing seat.

[0009] Preferably, the flexible clamping assembly comprises two sliders which are relatively and movably arranged on the linear guide rail, and the two sliders are respectively fixedly connected to corresponding clamping arms.

[0010] Preferably, the clamping arm is L-shaped.

[0011] Preferably, a plurality of limiting columns are arranged on the inner sides of the two clamping arms facing each other.

[0012] Preferably, the pneumatic drive assembly includes a cylinder and a rod sleeve, wherein the cylinder is fixedly disposed on a fixed seat, one end of a telescopic rod of the cylinder is downwardly connected to the rod sleeve, and the rod sleeve is hinged to the second connecting rod relative to one end of the first connecting rod.

[0013] Preferably, a shaft sleeve is fixedly provided on the side wall of the fixing seat.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model has a simple structure and light weight. The pneumatic drive assembly drives the two clamping arms to move toward or away from each other on the fixed seat through a connecting rod mechanism to achieve the clamping of objects with strong gripping force.

[0016] 2. The clamping arm of the utility model is L-shaped, and a plurality of limit columns are arranged on the inner sides of the two clamping arms relative to each other. The limit columns play a role of limiting and anti-slip, preventing objects from falling during clamping or transfer;

[0017] 3. The side wall of the fixed seat of the utility model is fixedly provided with a shaft sleeve, which serves as a quick-change structure and can be quickly connected to a device such as a robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the flexible pneumatic parallel clamping jaw device of the utility model;

[0019] Figure 2 This is an exploded view of the flexible pneumatic parallel clamping jaw device of the utility model;

[0020] Figure 3 This is a front view of the flexible pneumatic parallel clamping jaw device of the utility model;

[0021] Figure 4 It is a schematic structural diagram of the long hole on the first connecting rod of the utility model.

[0022] The markings in the figure correspond to the following:

[0023] 1-fixed seat; 2-flexible clamping assembly; 21-clamping arm; 211-hinge slot; 212-seat body; 22-slider; 3-connecting rod mechanism; 31-first connecting rod; 311-long hole; 32-second connecting rod; 4-pneumatic drive assembly; 41-cylinder; 42-rod sleeve; 5-pin shaft; 6-linear guide rail; 7-limiting column; 8-sleeve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-3 A flexible pneumatic parallel clamping device comprises a fixed seat 1, a flexible clamping assembly 2, a connecting rod mechanism 3 and a pneumatic driving assembly 4, wherein the flexible clamping assembly 2 comprises two clamping arms 21 relatively and movably arranged on the fixed seat 1. The connecting rod mechanism 3 comprises two swinging parts relatively arranged, each of which comprises a first connecting rod 31 and a second connecting rod 32, wherein the middle part of the first connecting rod 31 is hinged on the side wall of the fixed seat 1, one end of the first connecting rod 31 is hinged on the corresponding clamping arm 21, and the other end is hinged to one end of the second connecting rod 32, and the second connecting rod 32 is hinged to the pneumatic driving assembly 4 arranged on the fixed seat 1 relative to one end of the first connecting rod 31.

[0026] See also Figure 2 as well as Figure 4 A hinge groove 211 is provided at the hinged joint of the clamp arm 21 and the first connecting rod 31, and a pin 5 is passed through the hinge groove 211. A long hole 311 is provided along the length direction of the first connecting rod 31 at one end hinged with the clamp arm 21, and the pin 5 passes through the long hole 311 to hinge the first connecting rod 31 in the hinge groove 211.

[0027] In this embodiment, when the pneumatic drive assembly 4 drives the two clamping arms 21 to move toward or away from each other on the fixed base 1 through the connecting rod mechanism 3, it first drives the corresponding first connecting rod 31 to swing around the hinge between it and the fixed base 1 through the second connecting rod 32. While the first connecting rod 31 swings, it pushes the clamping arms 21 to move back and forth on the fixed base 1 to clamp or put down objects; during this process, the pin shaft 5 moves back and forth in the long hole 311.

[0028] See also Figure 1-2 , a linear guide rail 6 is provided at the bottom of the fixed seat 1. The flexible clamping assembly 2 includes two sliders 22 relatively and movably provided on the linear guide rail 6, and the two sliders 22 are respectively fixedly connected to the corresponding clamping arms 21. In this embodiment, the clamping arm 21 is hinged to the first connecting rod 31 at one end to form a seat body 212 to one side, and the seat body 212 is fixedly connected to the slider 22.

[0029] In this embodiment, the clamping arm 21 is L-shaped, and a plurality of limiting columns 7 are arranged on the inner sides of the two clamping arms 21 relative to each other. The limiting columns 7 have a limiting effect and an anti-slip effect to prevent objects from falling during the clamping or transfer process.

[0030] See also Figure 1-3 The pneumatic drive assembly 4 includes a cylinder 41 and a rod sleeve 42. The cylinder 41 is fixedly arranged on the fixed seat 1, and one end of the telescopic rod is downwardly connected to the rod sleeve 42. The rod sleeve 42 is hinged to the second connecting rod 32 relative to one end of the first connecting rod 31.

[0031] Preferably, see Figure 1 A shaft sleeve 8 is fixedly provided on the side wall of the fixing seat 1. The shaft sleeve 8 serves as a quick-change structure and can be quickly connected to a device such as a robot.

[0032] The utility model has a simple structure and is light in weight. The pneumatic drive assembly 4 drives the two clamping arms 21 to move toward or away from each other on the fixed seat 1 through the connecting rod mechanism 3 to clamp the article with strong gripping force.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flexible pneumatic parallel gripper device, characterized in that: The invention comprises a fixed seat (1), a flexible clamping assembly (2), a connecting rod mechanism (3) and a pneumatic drive assembly (4); the flexible clamping assembly (2) comprises two clamping arms (21) which are relatively and movably arranged on the fixed seat (1); the connecting rod mechanism (3) comprises two swinging parts which are relatively arranged; each of the swinging parts comprises a first connecting rod (31) and a second connecting rod (32); the middle part of the first connecting rod (31) is hinged on the side wall of the fixed seat (1); one end of the first connecting rod (31) is hinged on the corresponding clamping arm (21), and the other end is hinged to one end of the second connecting rod (32); the second connecting rod (32) is hinged to the pneumatic drive assembly (4) arranged on the fixed seat (1) relative to one end of the first connecting rod (31).

2. The flexible pneumatic parallel gripper device according to claim 1, characterized in that: A hinge groove (211) is provided at the hinged portion between the clamp arm (21) and the first connecting rod (31), and a pin shaft (5) is inserted into the hinge groove (211).

3. The flexible pneumatic parallel gripper device according to claim 2, characterized in that: An elongated hole (311) is provided at one end of the first connecting rod (31) hinged to the clamp arm (21) along the length of the rod, and the pin shaft (5) passes through the elongated hole (311) to hinge the first connecting rod (31) in the hinge groove (211).

4. The flexible pneumatic parallel gripper device according to claim 1, characterized in that: A linear guide rail (6) is provided at the bottom of the fixing seat (1).

5. The flexible pneumatic parallel gripper device according to claim 4, characterized in that: The flexible clamping assembly (2) comprises two sliders (22) which are relatively and movably arranged on the linear guide rail (6), and the two sliders (22) are respectively fixedly connected to corresponding clamping arms (21).

6. The flexible pneumatic parallel gripper device according to claim 1, characterized in that: The clamping arm (21) is L-shaped.

7. The flexible pneumatic parallel gripper device according to claim 1, characterized in that: A plurality of limiting columns (7) are arranged on the inner sides of the two clamping arms (21) facing each other.

8. The flexible pneumatic parallel gripper device according to claim 1, characterized in that: The pneumatic drive assembly (4) comprises a cylinder (41) and a rod sleeve (42); the cylinder (41) is fixedly arranged on a fixed seat (1); one end of a telescopic rod thereof is downwardly connected to the rod sleeve (42); the rod sleeve (42) is hingedly connected to one end of the second connecting rod (32) relative to the first connecting rod (31).

9. The flexible pneumatic parallel gripper device according to claim 1, characterized in that: A shaft sleeve (8) is fixedly arranged on the side wall of the fixing seat (1).

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