CN211967232U - Passive clamping mechanism - Google Patents
Passive clamping mechanism Download PDFInfo
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- CN211967232U CN211967232U CN202020416653.9U CN202020416653U CN211967232U CN 211967232 U CN211967232 U CN 211967232U CN 202020416653 U CN202020416653 U CN 202020416653U CN 211967232 U CN211967232 U CN 211967232U
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- clamping jaw
- passive
- chuck
- clamping
- tightening mechanism
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Abstract
The utility model discloses a passive fixture relates to fixture technical field, including the mechanism body, the mechanism body includes initiative push mechanism, chuck base, the hinge mechanism, chuck clamping jaw, passive tightening mechanism, part model, the outside of chuck base is circular array and is provided with equidistant clamping jaw fixing base, the hinge mechanism is installed on the clamping jaw fixing base, the clamping jaw fixing base passes through the hinge mechanism and is connected with rotating between the top of chuck clamping jaw, the chuck clamping jaw includes clamping jaw guide slot, clamping jaw friction disc, clamping jaw limiting plane, clamping jaw fixed establishment, the passive tightening mechanism of clamping jaw, passive tightening mechanism is two kinds of state structure. The utility model discloses can match the medical instrument part of multiple pattern, can be with lower cost, higher stability, the current centre gripping equipment is replaced to simpler processing degree of difficulty, helps the production and the inspection work of medical instrument product.
Description
Technical Field
The utility model relates to a fixture technical field especially relates to a passive fixture.
Background
As medical technology advances, more and more medical device products are used in the treatment of patients. Medical instrument products, as instruments for human bodies, must be subjected to a plurality of production processes and can be used for operations through strict quality control.
Many of the inspection processes in medical devices require inspection equipment to perform, and various fixtures of the equipment are required to perform automatic or semi-automatic inspection or manufacturing processes during the inspection process. Traditional anchor clamps often realize the centre gripping work to the part through modes such as screw thread, pneumatics, electronic, often its cost of manufacture is higher to need frequent maintenance, in order to guarantee the normal operating of its function.
Therefore, a fixture mechanism with low cost, wide application range, high stability and low manufacturing difficulty is needed to be matched with the production of instrument products; we have therefore devised a passive clamping mechanism to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a passive clamping mechanism.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a passive clamping mechanism comprises a mechanism body, wherein the mechanism body comprises an active pushing mechanism, a chuck base, a hinge mechanism, a chuck clamping jaw, a passive tightening mechanism and a part model, the outer side of the chuck base is provided with equidistant clamping jaw fixing seats in a circular array, the hinge mechanism is arranged on the clamping jaw fixing seats, the clamping jaw fixing seat is rotationally connected with the top of the clamping jaw of the chuck through a hinge mechanism, the clamping jaw of the chuck comprises a clamping jaw guide groove, a clamping jaw friction plate, a clamping jaw limiting plane, a clamping jaw fixing mechanism and a clamping jaw passive tightening mechanism, the passive tightening mechanism is in two state structures, one passive tightening mechanism is in an elastic ring structure, the other passive tightening mechanism is in a tension spring structure, the clamping jaw fixing mechanism is of an arc-shaped structure, and the clamping jaw fixing mechanism is connected with the passive tightening mechanism of the elastic circular structure in a buckling mode.
Preferably, three or four clamping jaw fixing seats are arranged at equal intervals.
Preferably, the hinge mechanism includes a fixed pin, the jaw fixing mechanism is a round hole structure, and the chuck jaws are rotatably mounted on the fixed pin through the jaw fixing mechanism.
Preferably, when the passive tightening mechanism is in a tension spring structure state, two ends of the tension spring structure are respectively connected with the chuck base and the clamping jaw limiting plane, and one side of the chuck base, which is close to the clamping jaw limiting plane, is provided with mounting grooves matched with two ends of the tension spring structure.
Preferably, the cartridge base is of cylindrical configuration.
Compared with the prior art, the beneficial effects of the utility model are that: when the utility model is used, the number of the clamping jaw fixing seats of the chuck base is not limited, and the clamping jaw fixing seats can be increased or decreased according to actual conditions; the passive tightening mechanism can tighten the chuck clamping jaw through a high-elastic material, or can tighten the chuck clamping jaw through an elastic material such as a tension spring in the other state as shown in the figure, so that the function of grasping the part model is realized; the clamping device can be matched with medical equipment parts in various styles, and can replace the existing clamping device with lower cost, higher stability and simpler processing difficulty to help the production and inspection work of medical equipment products.
Drawings
Fig. 1 is a schematic structural view of a passive clamping mechanism according to the present invention;
fig. 2 is a schematic structural view of a passive clamping mechanism according to the present invention in a clamping state;
fig. 3 is a schematic structural view of a passive clamping mechanism according to the present invention in a clamping state;
fig. 4 is a schematic structural view of a chuck jaw of a passive clamping mechanism according to the present invention;
fig. 5 is a sectional view of a passive tightening mechanism of the tension spring structure of the passive clamping mechanism provided by the utility model.
In the figure: the automatic chuck comprises an active pushing mechanism 1, a chuck base 2, a jaw fixing seat 21, a hinge mechanism 3, a chuck jaw 4, a jaw guide groove 41, a jaw friction plate 42, a jaw limiting plane 43, a jaw fixing mechanism 44, a jaw passive tightening mechanism 45, a jaw passive tightening mechanism 5 and a part model 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-5, a passive clamping mechanism comprises a mechanism body, the mechanism body comprises an active pushing mechanism 1, a chuck base 2, a hinge mechanism 3, a chuck clamping jaw 4 and a passive tightening mechanism 5, the part model 6, the outside of the chuck base 2 is provided with equidistant clamping jaw fixing seats 21 in a circular array, the hinge mechanism 3 is installed on the clamping jaw fixing seats 21, the clamping jaw fixing seats 21 are rotationally connected with the top of a chuck clamping jaw 4 through the hinge mechanism 3, the chuck clamping jaw 4 comprises a clamping jaw guide groove 41, a clamping jaw friction plate 42, a clamping jaw limiting plane 43, a clamping jaw fixing mechanism 44 and a clamping jaw passive tightening mechanism 45, the passive tightening mechanism 5 is in two state structures, one passive tightening mechanism 5 is in an elastic circular structure, the other passive tightening mechanism 5 is in a tension spring structure, the clamping jaw fixing mechanism 44 is in an arc structure, and the clamping jaw fixing mechanism 44 is in snap connection with the passive tightening mechanism 5 in the elastic circular structure;
specifically, the clamping jaw fixing seats 21 are provided with three or four at equal intervals, the hinge mechanism 3 comprises fixing pins, the clamping jaw fixing mechanisms 44 are of circular hole-shaped structures, the chuck clamping jaws 4 are rotatably mounted on the fixing pins through the clamping jaw fixing mechanisms 44, when the passive tightening mechanisms 5 are in the tension spring structure state, two ends of the tension spring structure are respectively connected with the chuck base 2 and the clamping jaw limiting plane 43, one side, close to each other, of the chuck base 2 and the clamping jaw limiting plane 43 is provided with mounting grooves matched with two ends of the tension spring structure, and the chuck base 2 is of a cylindrical structure.
Specifically, the jaw fixing seats 21 of the chuck base 2 of the passive clamping mechanism may be circumferentially three-symmetric relationship, or circumferentially four-symmetric relationship, and the jaw fixing seats 21 may also be circumferentially asymmetric relationship according to different shapes of parts;
the default active pushing mechanism 1 can provide stable pushing force, and the part model 6 is assumed to be placed in a stable mold, and the part model 6 is not limited in shape and size, and can be a circumferentially symmetric part or a circumferentially asymmetric part;
the working principle is as follows: when the clamp is used, the clamp is pushed towards the direction of the axially fixed part model 6 through the active pushing mechanism 1, and the chuck clamping jaw 4 is rotationally connected with the clamping jaw fixing seat 21 of the chuck base 2 through the hinge structure 3; when the part model 6 contacts the jaw guide grooves 41, the clamp is pushed in the direction of the part model 6, as shown in fig. 3, and at this time, under the influence of the component force, the chuck jaws 4 of the clamp move in the direction away from the center in the radial direction, and simultaneously, the passive tightening mechanism 5 starts to generate a force which enables the chuck jaws 4 to move in the direction towards the center in the radial direction, and when the part model 6 contacts the jaw friction plates 42, the clamping stability of the part model 6 can be ensured;
the active pushing mechanism 1 can be a pneumatic pushing mechanism, a motor screw rod pushing mechanism or a multi-connecting-rod pushing mechanism and the like; the number of the clamping jaw fixing seats of the chuck base 2 is not limited, and can be increased or decreased according to actual conditions, preferably 3 or more; the hinge mechanism 3 can realize the rotary fixed connection in a bolt mode or a mode that a bearing is matched with a shaft; the passive tightening mechanism 5 can tighten the chuck jaws 4 with a high elastic material, or as shown in fig. 5, tighten the chuck jaws 4 with an elastic material such as a tension spring, so as to achieve the function of gripping the part model 6.
The utility model discloses a when using, can match the medical instrument part of multiple pattern, can be with lower cost, higher stability, the current centre gripping equipment of simpler processing degree of difficulty replacement, help the production and the inspection work of medical instrument product.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. A passive clamping mechanism comprises a mechanism body and is characterized in that the mechanism body comprises an active pushing mechanism (1), a chuck base (2), a hinge mechanism (3), a chuck clamping jaw (4), a passive tightening mechanism (5) and a part model (6), wherein equidistant clamping jaw fixing seats (21) are arranged on the outer side of the chuck base (2) in a circular array, the hinge mechanism (3) is installed on the clamping jaw fixing seats (21), the clamping jaw fixing seats (21) are rotationally connected with the top of the chuck clamping jaw (4) through the hinge mechanism (3), the chuck clamping jaw (4) comprises a clamping jaw guide groove (41), a clamping jaw friction plate (42), a clamping jaw limiting plane (43), a clamping jaw fixing mechanism (44) and a clamping jaw passive tightening mechanism (45), the passive tightening mechanism (5) is of two-state structure, and one passive tightening mechanism (5) is of a circular ring-shaped elastic structure, and the other type of the passive tightening mechanism (5) is of a tension spring structure, the clamping jaw passive tightening mechanism (45) is of a circular arc-shaped structure, and the clamping jaw passive tightening mechanism (45) is in snap connection with the passive tightening mechanism (5) of the elastic circular ring-shaped structure.
2. A passive clamping mechanism according to claim 1, characterised in that the jaw holders (21) are provided with three or four equally spaced positions.
3. A passive gripping mechanism according to claim 1, characterised in that the hinge mechanism (3) comprises a fixed pin, the jaw securing mechanism (44) is of a circular hole configuration, and the chuck jaws (4) are rotatably mounted on the fixed pin by the jaw securing mechanism (44).
4. The passive clamping mechanism according to claim 1, wherein when the passive tightening mechanism (5) is in a tension spring structure state, two ends of the tension spring structure are respectively connected with the chuck base (2) and the clamping jaw limiting plane (43), and one side of the chuck base (2) and the clamping jaw limiting plane (43) close to each other is provided with a mounting groove matched with the two ends of the tension spring structure.
5. A passive gripping mechanism according to claim 1, characterised in that the cartridge base (2) is of cylindrical configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020416653.9U CN211967232U (en) | 2020-03-27 | 2020-03-27 | Passive clamping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020416653.9U CN211967232U (en) | 2020-03-27 | 2020-03-27 | Passive clamping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211967232U true CN211967232U (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020416653.9U Active CN211967232U (en) | 2020-03-27 | 2020-03-27 | Passive clamping mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN211967232U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112655370A (en) * | 2020-12-25 | 2021-04-16 | 广西壮族自治区农业科学院 | Sugarcane root cutting device |
-
2020
- 2020-03-27 CN CN202020416653.9U patent/CN211967232U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112655370A (en) * | 2020-12-25 | 2021-04-16 | 广西壮族自治区农业科学院 | Sugarcane root cutting device |
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