Small mechanical grabber

Abstract

The utility model discloses a small mechanical grabber, which belongs to the technical field of mechanical engineering and comprises an outer sleeve, a telescopic component, a clamping jaw body and a connecting rod. The telescopic assembly is arranged at the bottom of the outer sleeve, and the top end of the telescopic assembly penetrates into an inner cavity of the outer sleeve. The clamping jaw body is of an L-shaped structure, and one end of the clamping jaw body is rotationally connected to the bottom end of the telescopic assembly. And one end of the connecting rod is rotationally connected to the outer sleeve. Through mutual cooperation of the outer sleeve, the telescopic assembly, the clamping jaw body, the connecting rod, the motor and the telescopic pressing assembly, when an object is grabbed, the object is clamped through the clamping jaw body, downward pressure is provided for the object through the telescopic pressing assembly, and therefore the good stability of the grabbed object can be kept, and the grabbing efficiency is improved. When the clamping force provided by the clamping jaw body is small, the stability of an object can still be kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical engineering technical field, concretely is a small -size mechanical grab. BACKGROUND

[0002] Mechanical grab is one of the key components that are widely used, is used for grabbing object. For example, the end of industrial robot arm is often used for grabbing mechanical parts. Mechanical grab often adopts electric or pneumatic etc. Form drive, controls the action of clamping jaw to realize the effect of grabbing and releasing.

[0003] However, the mechanical grab in prior art also has some deficiencies, when grabbing object, because the clamping jaw needs to hold object, when the clamping force is too large, object is easy to damage, and when the clamping force is small, object is easy to separate from the clamping jaw in the moving process, leading to insufficient stability.

[0004] Therefore, we propose a small -size mechanical grab to solve the problems in the above -mentioned.

[0005] The above information disclosed in the background is only used to increase the understanding of the background of the utility model, therefore, it can include prior art that is not known by those skilled in the art. CONTENT OF UTILITY MODEL

[0006] The utility model aims at providing a small -size mechanical grab to solve the problem of insufficient stability of the clamping jaw in prior art when the clamping force is small.

[0007] In order to realize the above -mentioned purpose, the utility model provides a small -size mechanical grab, including outer sleeve, telescopic component, clamping jaw body and connecting rod;

[0008] The telescopic component is located at the bottom of the outer sleeve, and the top end of the telescopic component is inserted into the inner cavity of the outer sleeve;

[0009] The clamping jaw body is "L" shaped structure, and one end is rotatably connected to the bottom end of the telescopic component;

[0010] One end of the connecting rod is rotatably connected to the outer sleeve, and the other end is rotatably connected to the middle part of the clamping jaw body;

[0011] The inner cavity of the outer sleeve is provided with a motor, and the output shaft of the motor is drivingly connected with the telescopic component;

[0012] The bottom surface of the telescopic component is also provided with a telescopic compression assembly.

[0013] Preferably, the telescopic component includes a horizontal plate, the top surface of the horizontal plate is fixedly installed with a screw rod, and the screw rod is inserted into the inner cavity of the outer sleeve.

[0014] The output shaft of the motor is provided with a hole, and the screw rod penetrates into the hole;

[0015] A threaded sleeve ring is sleeved on the screw rod, and the threaded sleeve ring is fixedly installed on the end of the motor output shaft.

[0016] Preferably, the telescopic pressing assembly comprises a guide rod arranged on the bottom surface of the horizontal plate, and the movable rod is arranged in the guide rod.

[0017] The bottom end of the movable rod penetrates out of the guide rod, and a pressing plate is fixedly installed.

[0018] A spring is sleeved on the surface of the movable rod in the inner cavity of the guide rod, and the two ends of the spring are fixed with the guide rod and the movable rod respectively.

[0019] Preferably, the bottom end of the clamping jaw body is curved, and one side of the curved surface towards the center of the outer sleeve is further provided with a soft pad.

[0020] Preferably, the clamping jaw body is provided with three groups, which are distributed at intervals on the periphery of the horizontal plate.

[0021] Preferably, the telescopic pressing assembly further comprises an adjusting rod, and the adjusting rod is fixedly installed on the bottom surface of the horizontal plate.

[0022] The adjusting rod is provided with a vertical guide groove, the top end of the guide rod penetrates into the adjusting rod, and the top end of the adjusting rod is fixedly installed with a bolt penetrating into the guide groove.

[0023] The adjusting rod and the guide rod are fastened by the bolt.

[0024] Compared with the prior art, the utility model has the beneficial effects that:

[0025] (1) The utility model discloses a sleeve pipe, a telescopic assembly, a clamping jaw body, a connecting rod, a motor and a telescopic pressing assembly are matched with each other, when the object is gripped, the object is clamped by the clamping jaw body, and the telescopic pressing assembly provides downward pressure to the object, so that the object can keep good stability after being gripped, and the stability of the object can be kept when the clamping force provided by the clamping jaw body is small.

[0026] (2) The utility model discloses that the adjusting rod is installed on the bottom surface of the horizontal plate, and the guide rod can be adjusted in the adjusting rod, so that the telescopic pressing assembly can be applied to the gripping process of objects with different thicknesses, so that the applicability is better.

[0027] The above summary is intended to illustrate the present application and is not intended to be limiting thereof. Further aspects, embodiments and features of the present application will become apparent from the detailed description referenced above and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of the present application;

[0029] Figure 2 is a sectional view of Figure 1

[0030] Figure 3 is an enlarged view of the structure at A in Figure 2

[0031] Figure 4 is a schematic diagram of the structure of the embodiment 2 of the present application;

[0032] Figure 5 is an enlarged view of the structure at B in Figure 4

[0033] In the figure: 1, outer sleeve; 2, telescopic assembly; 3, clamping jaw body; 4, connecting rod; 5, motor; 6, telescopic compression assembly; 7, soft pad;

[0034] 21, cross plate; 22, screw rod; 23, threaded sleeve ring;

[0035] 61, guide rod; 62, movable rod; 63, pressing plate; 64, spring; 65, adjusting rod; 66, guide groove; 67, bolt. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. It should be pointed out that the drawings are schematic and not drawn to scale. For the clarity and convenience in the drawings, the relative size and proportion of the parts shown in the drawings are exaggerated or reduced for illustration, and any size is only exemplary, but not limiting.

[0037] Embodiment 1:

[0038] Please refer to Figures 1-2 ​​​A small mechanical grabber, comprising: an outer sleeve 1, a telescopic assembly 2, a jaw body 3 and a connecting rod 4; the telescopic assembly 2 is arranged at the bottom of the outer sleeve 1, and the top end of the telescopic assembly 2 penetrates into the inner cavity of the outer sleeve 1; the jaw body 3 is in an L-shaped structure, and one end is rotatably connected to the bottom end of the telescopic assembly 2; the jaw body 3 is provided in three groups and is distributed around the telescopic assembly 2, and the included angle between the three jaw bodies 3 and the center of the outer sleeve 1 is 120 degrees; one end of the connecting rod 4 is rotatably connected to the outer sleeve 1, and the other end is rotatably connected to the middle part of the jaw body 3; a motor 5 is arranged in the inner cavity of the outer sleeve 1, and the output shaft of the motor 5 is in transmission connection with the telescopic assembly 2; the bottom surface of the telescopic assembly 2 is further provided with a telescopic compression assembly 6.

[0039] The use process of the above technical solution is as follows: the outer sleeve 1 is installed at the end of the equipment, the motor 5 is electrically connected with the external power supply and control equipment through a cable, in use, the mechanical grabber is driven by the external equipment to move above the object, the motor 5 is controlled to work, the telescopic assembly 2 is driven to stretch out or retract by the motor 5, first, the telescopic assembly 2 is controlled to stretch out downward, so as to drive the jaw body 3 to open, and the included angle between the connecting rod 4 and the outer sleeve 1 is gradually increased, then the mechanical grabber is controlled to move downward by the external equipment, so that the telescopic compression assembly 6 contacts the object and provides a certain pressure, then the output shaft of the motor 5 is controlled to rotate reversely, so that the jaw body 3 is gradually reset and clamps the object, since the telescopic compression assembly 6 has the telescopic ability, when the jaw body 3 is reset, with the rising of the telescopic assembly 2, the pressure between the telescopic compression assembly 6 and the object is reduced, but the telescopic compression assembly 6 still contacts the object.

[0040] The above process provides clamping force by the jaw body 3 after grabbing the object, and provides downward pressure for the object by the telescopic compression assembly 6, so as to provide better stability.

[0041] Please refer to Figure 2 The telescopic assembly 2 comprises a horizontal plate 21, the top surface of the horizontal plate 21 is fixedly installed with a screw rod 22, the screw rod 22 penetrates into the inner cavity of the outer sleeve 1; the output shaft of the motor 5 is provided with a hole, and the screw rod 22 penetrates into the hole; a threaded sleeve ring 23 is threadedly sleeved on the screw rod 22, and the threaded sleeve ring 23 is fixedly installed at the end of the output shaft of the motor 5, and the three groups of jaw bodies 3 are distributed around the horizontal plate 21.

[0042] By adopting the above technical solution, in use, the motor 5 works to make the output shaft rotate and drive the threaded sleeve ring 23 to rotate, since the screw rod 22 is limited by the connecting rod 4 and cannot rotate, the rotation of the threaded sleeve ring 23 will drive the linear motion of the screw rod 22, so as to control the telescopic movement of the screw rod 22.

[0043] Please refer to Figures 2-3The telescopic pressing assembly 6 comprises a guide rod 61 arranged on the bottom surface of the horizontal plate 21, and the guide rod 61 is provided with a movable rod 62; the bottom end of the movable rod 62 penetrates out of the guide rod 61 and is fixedly installed with a pressing plate 63; the surface of the movable rod 62 is sleeved with a spring 64 in the inner cavity of the guide rod 61, and the two ends of the spring 64 are fixedly connected with the guide rod 61 and the movable rod 62 respectively.

[0044] The state shown in the figure is the state that the spring 64 is stretched, and in fact, when the pressing plate 63 is not in contact with the object to be grabbed, the spring 64 is slightly compressed under the gravity of the pressing plate 63.

[0045] In the embodiment, the guide rod 61 is fixedly installed on the bottom surface of the horizontal plate 21, and during the downward movement of the mechanical grabber to grab the object, the pressing plate 63 first contacts the object, and as the downward pressing continues, the movable rod 62 is retracted into the guide rod 61, and the spring 64 is stretched. During the grabbing, since the process of the claw body 3 gripping the object is accompanied by the upward movement of the horizontal plate 21, the guide rod 61 is lifted, and the spring 64 is gradually reset, so that the pressing plate 63 still contacts the object and there is a certain pressure.

[0046] The bottom end of the claw body 3 is curved, and the side facing the center of the outer sleeve 1 is further provided with a soft pad 7.

[0047] Embodiment 2:

[0048] Please refer to Figures 4-5 , and in combination with Figure 1 , the difference between the embodiment 1 is that the guide rod 61 and the horizontal plate 21 are not directly fixedly connected in the embodiment, specifically, the telescopic pressing assembly 6 further comprises an adjusting rod 65, and the adjusting rod 65 is fixedly installed on the bottom surface of the horizontal plate 21; the adjusting rod 65 is provided with a vertical guide slot 66, the top end of the guide rod 61 penetrates in the adjusting rod 65, and the top end of the adjusting rod 65 is fixedly installed with a bolt 67 penetrating in the guide slot 66; the adjusting rod 65 and the guide rod 61 are fastened by the bolt 67.

[0049] By adopting the above technical scheme, the telescopic pressing assembly 6 can be adjusted according to the thickness of the object to be grabbed as a whole, and during the adjustment, the guide rod 61 can slide in the adjusting rod 65, and after the adjustment, the adjusting rod 65 and the guide rod 61 can be fixed by the bolt 67. Thus, the mechanical grabber is more flexible in use and has wider applicability.

[0050] Working principle: control motor 5 to start working, motor 5 drives telescopic component 2 to stretch out and retract. At this time, telescopic component 2 stretches out downward, since one end of clamping jaw body 3 is rotationally connected to the bottom end of telescopic component 2, and one end of connecting rod 4 is rotationally connected to outer sleeve 1 and the other end is rotationally connected to the middle part of clamping jaw body 3, so the downward stretching action of telescopic component 2 will drive clamping jaw body 3 to open, and the included angle between connecting rod 4 and outer sleeve 1 also gradually increases, so that the originally closed clamping jaw body 3 gradually presents an open state, so as to smoothly accommodate and grab the target object.

[0051] Contacting object and pressing stage: after clamping jaw body 3 is opened to a suitable degree, the mechanical grabber is continuously controlled to move downward by external equipment, so that telescopic pressing component 6 first contacts the surface of the object. With the continuous downward movement of the mechanical grabber, telescopic pressing component 6 applies a certain downward pressure to the object, and preliminarily realizes the pressing and fixing of the object.

[0052] Clamping jaw reset clamping stage: then, the output shaft of control motor 5 is reversely rotated, since there is a transmission connection relationship between telescopic component 2 and motor 5, at this time telescopic component 2 starts to retract upward. In the ascending process of telescopic component 2, clamping jaw body 3 is gradually reset, that is, clamping jaw body 3 gradually closes, and then firmly clamps the object. Although telescopic pressing component 6 is reduced in pressure with the ascending of telescopic component 2, it still maintains the contact state with the object and continuously plays a certain pressing role, which cooperates with clamping jaw body 3 to provide better clamping stability, so as to ensure that the object does not fall off during grabbing.

[0053] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt the conventional types in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here. The contents not described in detail in the description all belong to the prior art known to the person skilled in the art.

[0054] In the description of the utility model, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. The meaning of "multiple" is two or more, unless otherwise specifically limited.

[0055] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication or two element mutual action relation.

[0056] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature, can be first and second feature direct contact, or first and second feature indirectly contact through intermediate medium. Moreover, first feature "on", "above" and "on" second feature, can be first feature directly above or obliquely above second feature, or just indicate that first feature horizontal height is higher than second feature. First feature "under", "below" and "under" second feature, can be first feature directly below or obliquely below second feature, or just indicate that first feature horizontal height is less than second feature.

[0057] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without conflict.

[0058] The utility model discloses the embodiment figure, only relate to the structure of the disclosure embodiment, other structures can refer to the usual design, under the condition of not conflict, the same embodiment and different embodiments of the utility model can be combined mutually.

[0059] Although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part technical features, any modification, equivalent replacement, improvement etc. that is done within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A small mechanical gripper characterized by, It comprises an outer sleeve (1), a telescopic assembly (2), a clamping jaw body (3) and a connecting rod (4); The telescopic assembly (2) is arranged at the bottom of the outer sleeve (1), and the top end of the telescopic assembly (2) penetrates into the inner cavity of the outer sleeve (1); The clamping jaw body (3) is in "L" shape structure, and one end is rotatably connected to the bottom end of the telescopic assembly (2); One end of the connecting rod (4) is rotatably connected to the outer sleeve (1), and the other end is rotatably connected to the middle part of the clamping jaw body (3); The inner cavity of the outer sleeve (1) is provided with a motor (5), and the output shaft of the motor (5) is in transmission connection with the telescopic assembly (2); The bottom surface of the telescopic assembly (2) is further provided with a telescopic compression assembly (6).

2. A small mechanical gripper according to claim 1, characterized in that: The telescopic assembly (2) comprises a horizontal plate (21), and the top surface of the horizontal plate (21) is fixedly provided with a screw rod (22), and the screw rod (22) penetrates into the inner cavity of the outer sleeve (1); The output shaft of the motor (5) is provided with a hole, and the screw rod (22) penetrates into the hole; The screw rod (22) is threadedly sleeved with a threaded sleeve ring (23), and the threaded sleeve ring (23) is fixedly installed at the end of the output shaft of the motor (5).

3. A small mechanical gripper according to claim 2, characterized in that: The telescopic compression assembly (6) comprises a guide rod (61) arranged on the bottom surface of the horizontal plate (21), and a movable rod (62) penetratingly arranged in the guide rod (61); The bottom end of the movable rod (62) penetrates out of the guide rod (61), and a pressing plate (63) is fixedly installed; The surface of the movable rod (62) is sleeved with a spring (64) in the inner cavity of the guide rod (61), and the two ends of the spring (64) are fixedly connected with the guide rod (61) and the movable rod (62) respectively.

4. A small mechanical gripper according to claim 1, characterized in that: The bottom end of the clamping jaw body (3) is curved, and one side facing the center of the outer sleeve (1) is further provided with a soft pad (7).

5. A small mechanical gripper according to claim 2, characterized in that: The clamping jaw body (3) is provided with three groups, which are distributed at the periphery of the horizontal plate (21).

6. A small mechanical gripper according to claim 3, characterized in that: The telescopic compression assembly (6) further comprises an adjusting rod (65) fixedly installed on the bottom surface of the horizontal plate (21); The adjusting rod (65) is provided with a vertical guide groove (66), the top end of the guide rod (61) penetrates into the adjusting rod (65), and the top end of the adjusting rod (65) is fixedly provided with a bolt (67) penetrating into the guide groove (66); The adjusting rod (65) and the guide rod (61) are fastened by the bolt (67).

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