A new type of pneumatic gripper

Abstract

The utility model discloses a novel pneumatic clamp, which relates to the technical field of clamps, and includes a housing, a piston, a spring, a first connecting rod, a second connecting rod and a clamp. A piston is movably arranged in the housing, a spring is arranged at the lower end of the piston, one end of the first connecting rod is connected to the piston, the other end of the first connecting rod is connected to the second connecting rod, and one end of the second connecting rod is connected to the clamp. By placing a pneumatic structure inside, the first connecting rod is directly connected to the piston, and no additional pneumatic fixing device is required, the appearance is compact, and the appearance can be miniaturized; by setting the spring, the piston can be automatically reset, and the reliability is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping jaws, in particular to a new type of pneumatic clamping jaw. Background Art

[0002] Pneumatic grippers are actuators that use compressed air as power to clamp or grab workpieces.

[0003] The pneumatic gripper cylinder in the prior art is an external cylinder (i.e., the piston rod is external), and the piston rod of the cylinder pushes the connecting rod, so that the connecting rod drives the pneumatic gripper to clamp and release. However, the external cylinder needs to add a fixing device; and in order to achieve the clamping and releasing actions, the cylinder has a larger appearance, a complex structure, and poor stability. Utility Model Content

[0004] The purpose of the utility model is to provide a new pneumatic clamping jaw for solving the above technical problems.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A new type of pneumatic clamp comprises a shell, a piston, a spring, a first connecting rod, a second connecting rod and a clamp. The piston is movably arranged in the shell, the spring is arranged at the lower end of the piston, one end of the first connecting rod is connected to the piston, the other end of the first connecting rod is connected to the second connecting rod, and one end of the second connecting rod is connected to the clamp.

[0007] Preferably, the housing comprises a lower cover, an upper cover and an outer shell, the lower end of the outer shell is provided with the lower cover, the upper end of the outer shell is provided with the upper cover, and the piston is arranged in the outer shell.

[0008] As a further preference, a mounting groove is provided in the middle of the lower cover, one end of the spring is connected to the lower end of the piston, and the other end of the spring is installed in the mounting groove.

[0009] As a further preference, it further comprises a sealing ring, and the sealing ring is arranged between the upper cover and the outer shell.

[0010] As a further preference, it further comprises a lip ring, the upper outer edge of the piston is sleeved with the lip ring, and the outer peripheral wall of the lip ring abuts against the inner peripheral wall of the outer shell.

[0011] As a further preference, a slide groove is provided on an outer wall of one side of the shell, and the other end of the first connecting rod passes through the slide groove.

[0012] The above technical solution has the following advantages or beneficial effects:

[0013] In the utility model, the pneumatic structure is built-in and directly connected to the first connecting rod through the piston, without the need for an additional pneumatic fixing device. The appearance is compact and can be miniaturized. The piston can be automatically reset by setting a spring, and the reliability is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the new pneumatic gripper in the utility model. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the structure of the new pneumatic gripper in the utility model. Figure 2 ;

[0016] Figure 3 It is a top view of the new pneumatic clamp in the utility model.

[0017] In the figure: 1, shell; 101, lower cover; 102, upper cover; 103, outer shell; 2, piston; 3, spring; 4, first connecting rod; 5, second connecting rod; 6, clamping claw; 7, mounting groove; 8, sealing ring; 9, lip ring. DETAILED DESCRIPTION

[0018] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0019] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Figure 1 This is a schematic diagram of the structure of the new pneumatic gripper in the utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the new pneumatic gripper in the utility model. Figure 2 ; Figure 3 This is a top view of the new pneumatic gripper in the utility model. Figures 1 to 3 , which shows a preferred embodiment, shows a new type of pneumatic clamp, including a housing 1, a piston 2, a spring 3, a first connecting rod 4, a second connecting rod 5 and a clamp 6. The housing 1 is provided with a piston 2, the lower end of the piston 2 is provided with a spring 3, one end of the first connecting rod 4 is connected to the piston 2, the other end of the first connecting rod 4 is connected to the second connecting rod 5, and one end of the second connecting rod 5 is connected to the clamp 6. Figure 1 As shown, compared with the prior art, the present embodiment eliminates the need for the piston 2 rod, and directly connects the first connecting rod 4 to the piston 2, which eliminates the need for an additional pneumatic fixing device. The appearance is compact and applicable to more working scenarios. The first connecting rod 4 is hinged to the piston 2, the second connecting rod 5 is hinged to the first connecting rod 4, the middle part of the second connecting rod 5 is hinged to the housing 1, and an air source interface connected to the inside of the housing 1 is provided at the upper end of the housing 1. The air source interface is connected to an external air source. By pumping gas into the housing 1, the piston 2 is pushed downward, the piston 2 drives the first connecting rod 4 to rotate, the first connecting rod 4 drives the second connecting rod 5 to rotate, and the second connecting rod 5 drives the clamp 6 to rotate, so that the clamp 6 is moved by Figure 1 The state changes to Figure 2 In the state shown, the clamping action of the clamping jaws 6 is first performed. When the piston 2 moves upward under the action of the spring 3, the piston 2 drives the first connecting rod 4 to rotate, and the first connecting rod 4 drives the second connecting rod 5 to drive the clamping jaws 6 to open outward.

[0022] Further, as a preferred embodiment, the housing 1 includes a lower cover 101, an upper cover 102 and an outer shell 103, the lower end of the outer shell 103 is provided with the lower cover 101, the upper end of the outer shell 103 is provided with the upper cover 102, and the piston 2 is provided in the outer shell 103. Figure 1As shown, a mounting groove 7 is provided in the middle of the lower cover 101, one end of the spring 3 is connected to the lower end of the piston 2, and the other end of the spring 3 is installed in the mounting groove 7, wherein the housing 103 and the lower cover 101 are fixed by bolts, and the upper cover 102 and the housing 103 are sealed. The middle part of the second connecting rod 5 is hinged to the bottom of one side of the housing 103, and the second connecting rod 5 can rotate around the hinged position between itself and the housing 103.

[0023] Further, as a preferred embodiment, a sealing ring 8 is further included, and a sealing ring 8 is provided between the upper cover 102 and the outer shell 103. The sealing ring 8 is an O-ring, which is used for sealing between the upper cover 102 and the outer shell 103.

[0024] Further, as a preferred embodiment, it also includes a lip ring 9, the upper outer edge of the piston 2 is sleeved with a lip ring 9, and the outer peripheral wall of the lip ring 9 abuts against the inner peripheral wall of the housing 103. The lip ring 9 is used for sealing between the piston 2 and the housing 103, wherein the lip ring 9 is fixed to the upper outer edge of the piston 2.

[0025] Further, as a preferred embodiment, a slide groove is provided on one side outer wall of the housing 103, and the other end of the first connecting rod 4 passes through the slide groove. Figure 3 As shown, the clamping jaws 6 may be provided with 2 to 3 pieces, the side wall of the housing 103 may be provided with 2 to 3 slide grooves, and the first connecting rod 4 and the second connecting rod 5 may be provided with 2 to 3 pieces. The slide grooves are provided along the axial direction of the housing 103, see Figure 1 As shown, when the piston 2 moves downward in the housing 103, the lower surface of the lip ring 9 is always located on the upper side of the slide groove to prevent gas leakage. The lower outer wall of the piston 2 can be recessed into the interior of the piston 2.

[0026] A strip groove may be provided on the outer wall of the piston 2 , and one end of the first connecting rod 4 may be installed in the strip groove through a hinge shaft, and the strip groove is arranged along the axial direction of the piston 2 .

[0027] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of pneumatic gripper, characterized in that: It includes a shell, a piston, a spring, a first connecting rod, a second connecting rod and a clamping claw. The piston is movably arranged in the shell, the spring is arranged at the lower end of the piston, one end of the first connecting rod is connected to the piston, the other end of the first connecting rod is connected to the second connecting rod, and one end of the second connecting rod is connected to the clamping claw.

2. The novel pneumatic gripper according to claim 1, characterized in that: The housing comprises a lower cover, an upper cover and an outer shell. The lower end of the outer shell is provided with the lower cover, the upper end of the outer shell is provided with the upper cover, and the piston is arranged in the outer shell.

3. The novel pneumatic gripper according to claim 2, characterized in that: A mounting groove is provided in the middle of the lower cover, one end of the spring is connected to the lower end of the piston, and the other end of the spring is mounted in the mounting groove.

4. The novel pneumatic gripper as claimed in claim 2, characterized in that: It also includes a sealing ring, which is arranged between the upper cover and the outer shell.

5. The novel pneumatic gripper as claimed in claim 2, characterized in that: It also includes a lip ring, which is sleeved on the outer edge of the upper end of the piston, and the outer peripheral wall of the lip ring abuts against the inner peripheral wall of the shell.

6. The novel pneumatic gripper as claimed in claim 2, characterized in that: A sliding groove is provided on an outer wall of one side of the shell, and the other end of the first connecting rod passes through the sliding groove.

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