Manual self-locking type clamping mechanism

Abstract

The utility model discloses a manual self-locking type clamping mechanism, which relates to the technical field of pneumatic tool clamps, and comprises a vertically arranged transition plate, a clamping cylinder, a pressing arm, a connecting rod and a handle, a mechanical valve is arranged on the side surface of the transition plate; a fixed clamping plate is arranged at the upper end of the transition plate; the rear end of the pressing arm is hinged to the fixed clamping plate, and a pressing head is arranged at the front end of the pressing arm and connected with the mechanical valve through a connecting piece. A cylinder body of the clamping air cylinder is hinged to the transition plate. The connecting rod is located above the pressing arm, the front end of the connecting rod is bent downwards to be hinged to the fixed clamping plate, the rear end of the connecting rod is hinged to a piston rod of the clamping air cylinder through a rotating block, and the bent end of the connecting rod is hinged to the pressing arm through a rotating clamping plate. The lower end of the handle is fixedly connected with the connecting rod through a connecting block. Rapid manual self-locking can be achieved, errors are effectively compensated, and self-locking is achieved through a rapid adjusting mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic tooling fixtures, and specifically relates to a manual self-locking clamping mechanism. Background Art

[0002] The existing pneumatic tooling fixtures have the following defects: 1. The locking mechanism used cannot achieve manual positioning, and at the same time, the clamping mechanism cannot achieve self-locking, and it will fall by itself due to gravity after the air source is cut off. 2. The mechanism cannot compensate for machining errors. Summary of the Utility Model

[0003] Aiming at the defects existing in the prior art, the purpose of the utility model is to provide a manual self-locking clamping mechanism, which can achieve quick manual self-locking, effectively compensate for errors, and quickly adjust the mechanism to achieve self-locking.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a manual self-locking clamping mechanism, which includes a vertically arranged transition plate, and also includes a clamping cylinder, a pressure arm, a connecting rod and a handle; a mechanical valve is arranged on the side surface of the transition plate, and a fixed clamping plate is arranged at the upper end of the transition plate; the rear end of the pressure arm is hinged to the fixed clamping plate, a pressure head is arranged at the front end of the pressure arm, and the pressure head is connected to the mechanical valve through a connecting piece; the cylinder body of the clamping cylinder is hinged to the transition plate; the connecting rod is located above the pressure arm, and the front end of the connecting rod is bent downward and hinged to the fixed clamping plate, the rear end of the connecting rod is hinged to the piston rod of the clamping cylinder through a rotating block, and the bent end of the connecting rod is hinged to the pressure arm through a rotating clamping plate; the lower end of the handle is fixedly connected to the connecting rod through a connecting block.

[0005] A further improvement lies in that: a ball head is arranged at the upper end of the handle.

[0006] A further improvement lies in that: the cylinder body of the clamping cylinder is hinged to the transition plate through a first pin shaft.

[0007] A further improvement lies in that: the upper end of the fixed clamping plate is hinged to the rear end of the pressure arm through a second pin shaft.

[0008] A further improvement lies in that: the lower end of the rotating block is hinged to the piston rod of the clamping cylinder through a third pin shaft.

[0009] A further improvement lies in that: the connecting rod is in a V-shaped structure, and the front end of the connecting rod is bent downward and then hinged to the fixed clamping plate through a fourth pin shaft, the rear end of the connecting rod is hinged to the upper end of the rotating block through a fifth pin shaft, and the bent end of the connecting rod is hinged to the upper end of the rotating clamping plate through a sixth pin shaft.

[0010] A further improvement lies in that: the lower end of the rotating clamping plate is hinged to the middle part of the pressure arm through a seventh pin shaft.

[0011] A further improvement lies in that: a pressure block is arranged at the front end of the pressure arm.

[0012] A further improvement lies in that a guiding and limiting assembly is provided between the bottom of the pressing arm and the transition plate.

[0013] A further improvement lies in that a support seat is provided at the lower end of the transition plate.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. The present utility model can achieve rapid and accurate positioning of the parts that need to be manually positioned and prevent the parts from moving in the pneumatic fixture.

[0016] 2. The present utility model effectively compensates for errors and the quick adjustment mechanism realizes self-locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the manual self-locking clamping mechanism in the embodiment of the present utility model;

[0018] Figure 2 It is a schematic working diagram of the manual self-locking clamping mechanism in the embodiment of the present utility model;

[0019] Figure 3 It is a schematic connection diagram of the rotating clamping plate part in the embodiment of the present utility model;

[0020] Figure 4 It is a cross-sectional view of the rotating clamping plate part in the embodiment of the present utility model.

[0021] Reference numerals:

[0022] 1 - transition plate; 11 - support seat; 12 - mechanical valve; 13 - connecting piece; 14 - guiding and limiting assembly; 2 - clamping cylinder; 21 - first pin shaft; 3 - fixed clamping plate; 31 - second pin shaft; 4 - pressing arm; 41 - pressing block; 5 - rotating block; 51 - third pin shaft; 6 - connecting rod; 61 - fourth pin shaft; 62 - fifth pin shaft; 63 - sixth pin shaft; 7 - handle; 71 - connecting block; 72 - ball head; 8 - pressing head; 9 - rotating clamping plate; 91 - seventh pin shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The embodiments of the present utility model will be described in detail below. The described embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end.

[0024] In the description of the present utility model, it should be noted that for the orientation terms, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and position relationship are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present utility model.

[0025] In addition, such terms as "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meanings of "several" and "a number of" are two or more, unless otherwise specifically defined.

[0026] Next, in conjunction with the drawings of the specification, by further describing the specific embodiments of the present utility model, the technical solutions and their beneficial effects of the present utility model will be made clearer and more definite. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0027] See Figures 1 to 4 As shown, an embodiment of the present utility model provides a manual self-locking clamping mechanism, which includes a vertically arranged transition plate 1, and also includes a clamping cylinder 2, a pressure arm 4, a connecting rod 6 and a handle 7;

[0028] A mechanical valve 12 is arranged on the side surface of the transition plate 1, and a fixed clamping plate 3 is arranged at the upper end of the transition plate 1; specifically, a support seat 11 is arranged at the lower end of the transition plate 1.

[0029] The rear end of the pressure arm 4 is hinged to the fixed clamping plate 3, and a pressure head 8 is arranged at the front end of the pressure arm 4. The pressure head 8 is connected to the mechanical valve 12 through a connecting piece 13; specifically, the upper end of the fixed clamping plate 3 is hinged to the rear end of the pressure arm 4 through a second pin shaft 31. A pressure block 41 is arranged at the front end of the pressure arm 4. A guiding and limiting assembly 14 is arranged between the bottom of the pressure arm 4 and the transition plate 1.

[0030] The cylinder body of the clamping cylinder 2 is hinged to the transition plate 1; specifically, the cylinder body of the clamping cylinder 2 is hinged to the transition plate 1 through a first pin shaft 21.

[0031] The connecting rod 6 is located above the pressing arm 4. The front end of the connecting rod 6 is bent downward and hinged to the fixed clamping plate 3. The rear end of the connecting rod 6 is hinged to the piston rod of the clamping cylinder 2 through the rotating block 5. Specifically, the lower end of the rotating block 5 is hinged to the piston rod of the clamping cylinder 2 through the third pin shaft 51. The bent end of the connecting rod 6 is hinged to the pressing arm 4 through the rotating clamping plate 9. Specifically, the lower end of the rotating clamping plate 9 is hinged to the middle part of the pressing arm 4 through the seventh pin shaft 91. The connecting rod 6 is in a V-shaped structure. After the front end of the connecting rod 6 is bent downward, it is hinged to the fixed clamping plate 3 through the fourth pin shaft 61. The rear end of the connecting rod 6 is hinged to the upper end of the rotating block 5 through the fifth pin shaft 62. The bent end of the connecting rod 6 is hinged to the upper end of the rotating clamping plate 9 through the sixth pin shaft 63.

[0032] The lower end of the handle 7 is fixedly connected to the connecting rod 6 through the connecting block 71. Specifically, a ball head 72 is arranged at the upper end of the handle 7.

[0033] Bushings are arranged on each of the above-mentioned pin shafts, and a cushion block is arranged between the pressure head 8 and the pressing arm 4.

[0034] The working principle of the present utility model is as follows:

[0035] The clamping cylinder and the fixed clamping plate are both installed on the transition plate. The connecting rod and the pressing arm are installed on the fixed clamping plate. The rotating clamping plate is installed between the pressing arm and the fixed clamping plate. It is required to finally achieve that the rotation points are collinear. The piston rod of the clamping cylinder is connected to the rotating block. A handle rod device is installed between the fixed clamping plates to achieve manual quick clamping. An adjusting block is installed at the bottom of the connecting rod. After manual locking, the position of the rotation point is measured, and the height of the adjusting block is adjusted. Finally, the three rotation points are on a straight line, so as to achieve linear self-locking.

[0036] In the description of the specification, the description with reference to terms such as "one embodiment", "preferably", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. The schematic expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0037] Through the description of the above structure and principle, those skilled in the art should understand that the present utility model is not limited to the above specific embodiments. The improvements and substitutions using the well-known technologies in the art on the basis of the present utility model all fall within the protection scope of the present utility model, which should be defined by each claim.

Claims

1. A manual self-locking clamping mechanism, comprising a vertically arranged transition plate (1), characterized in that: It also includes a clamping cylinder (2), a pressing arm (4), a connecting rod (6) and a handle (7); A mechanical valve (12) is provided on the side of the transition plate (1), and a fixing clamping plate (3) is provided on the upper end of the transition plate (1); The rear end of the pressure arm (4) is hinged to the fixed clamping plate (3), and the front end of the pressure arm (4) is provided with a pressure head (8), which is connected to the mechanical valve (12) via a connecting piece (13); The cylinder body of the clamping cylinder (2) is hinged to the transition plate (1); The connecting rod (6) is located above the pressure arm (4), and the front end of the connecting rod (6) is bent downward and hinged to the fixed clamping plate (3), the rear end of the connecting rod (6) is hinged to the piston rod of the clamping cylinder (2) through the rotating block (5), and the bent end of the connecting rod (6) is hinged to the pressure arm (4) through the rotating clamping plate (9); The lower end of the handle (7) is fixedly connected to the connecting rod (6) via a connecting block (71).

2. The manual self-locking clamping mechanism according to claim 1, characterized in that: The upper end of the handle (7) is provided with a ball head (72).

3. The manual self-locking clamping mechanism according to claim 1, characterized in that: The cylinder body of the clamping cylinder (2) is hinged to the transition plate (1) via a first pin shaft (21).

4. The manual self-locking clamping mechanism according to claim 1, characterized in that: The upper end of the fixed clamping plate (3) is hinged to the rear end of the pressing arm (4) via a second pin shaft (31).

5. The manual self-locking clamping mechanism according to claim 1, characterized in that: The lower end of the rotating block (5) is hinged to the piston rod of the clamping cylinder (2) via a third pin shaft (51).

6. The manual self-locking clamping mechanism according to claim 1, characterized in that: The connecting rod (6) is in a V-shaped structure, and the front end of the connecting rod (6) is bent downward and is hinged to the fixed clamping plate (3) through a fourth pin shaft (61), the rear end of the connecting rod (6) is hinged to the upper end of the rotating block (5) through a fifth pin shaft (62), and the bent end of the connecting rod (6) is hinged to the upper end of the rotating clamping plate (9) through a sixth pin shaft (63).

7. The manual self-locking clamping mechanism according to claim 1, characterized in that: The lower end of the rotating clamping plate (9) is hinged to the middle part of the pressing arm (4) through a seventh pin shaft (91).

8. The manual self-locking clamping mechanism according to claim 1, characterized in that: A pressing block (41) is provided on the front end of the pressing arm (4).

9. The manual self-locking clamping mechanism according to claim 1, characterized in that: A guide and limiting fitting (14) is provided between the bottom of the pressure arm (4) and the transition plate (1).

10. The manual self-locking clamping mechanism according to claim 1, characterized in that: A support seat (11) is provided at the lower end of the transition plate (1).

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