A clamping device

Abstract

The present invention discloses a clamping device, including a fixed body, a clamping unit, a power component and a pusher. The clamping unit includes a plurality of clamping components arranged in parallel, each clamping component includes two clamping jaws, the two clamping jaws are respectively rotatably connected to the fixed body, and the two clamping jaws are arranged opposite to each other; the power component is arranged on the fixed body, and when started, the two clamping jaws of each clamping component are pushed by the pusher, so that one end of the two clamping jaws used to clamp an object is separated from each other; the two clamping jaws of each clamping component are respectively matched with a reset component with the fixed body, or the two clamping jaws of each clamping component are matched with a reset component, and the reset component drives the two clamping jaws to reset, so that one end of the two clamping jaws used to clamp an object is close to each other. The present invention can control the synchronous opening and closing of the two clamping jaws of multiple clamping components by using a relatively small number of power components and a simple transmission method, thereby greatly reducing the cost, and making the structure of the entire device simpler, smaller in size, and reducing the occupied space.

Description

Technical Field

[0001] The invention relates to the technical field of manipulators, and in particular to a clamping device. Background Art

[0002] In the process of automated assembly, clamping devices are widely used for clamping and transferring various objects. The clamping device of the prior art generally includes two clamping jaws, a driving mechanism, etc. The driving mechanism includes a cylinder and a transmission assembly. The cylinder is a power component, which is connected to the two clamping jaws through the transmission assembly to drive the two clamping jaws to open or close. The clamping component composed of the two clamping jaws can generally only clamp one or two products at a time. When multiple products need to be clamped, the use requirements can only be met by increasing the number of clamping components. However, with the increase of clamping components, the driving mechanism also needs to be increased, or the transmission assembly between the power component and the clamping component needs to be modified, resulting in the structure of the transmission assembly becoming very complicated and using many parts. Therefore, whether it is to increase the number of driving mechanisms or to modify the transmission assembly, it will cause problems such as high cost and large volume. Summary of the invention

[0003] The present invention aims at solving the technical problems existing in the prior art and provides a clamping device which occupies little space and has low cost.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a clamping device, including a fixed body, a clamping unit, a power component and a pushing member, the clamping unit includes a plurality of clamping components distributed in parallel, each clamping component includes two clamping jaws, the two clamping jaws are respectively rotatably connected to the fixed body, and the two clamping jaws are arranged opposite to each other; the power component is arranged on the fixed body, and when started, the two clamping jaws of each clamping component are pushed by the pushing member, so that one end of the two clamping jaws used to clamp the object are separated from each other; the two clamping jaws of each clamping component are respectively matched with a reset component with the fixed body, or the two clamping jaws of each clamping component are matched with a reset component, and the reset component drives the two clamping jaws to reset, so that one end of the two clamping jaws used to clamp the object are close to each other.

[0005] Furthermore, the reset component is a spring, the spring is abutted between the clamping jaw and the fixed body, or the spring is connected between the two clamping jaws.

[0006] Furthermore, the fixed body includes a hollow base and two spring seats, the two spring seats are respectively fixed on two opposite surfaces of the base, the other ends of the two clamping jaws of each clamping unit are respectively rotatably connected to the base, and the springs are respectively arranged between the two clamping jaws of each clamping unit and the two spring seats; the power component is arranged on the base.

[0007] Furthermore, a limiting member is provided in the base, and the limiting member is located between the two clamping jaws, so as to limit the two clamping jaws when one end of the two clamping jaws for clamping an object is brought close to each other and in place.

[0008] Furthermore, the other ends of the two clamps are respectively provided with a guiding slope, the two guiding slopes are arranged opposite to each other, and the spacing between the two guiding slopes gradually increases from the end of the guiding slope away from the power component to the end of the guiding slope close to the power component; the pushing member is pushed and matched with the two guiding slopes.

[0009] Furthermore, the power component is a cylinder, and its piston rod is fixedly connected to the pushing member.

[0010] Furthermore, the pushing member is a rod structure, which is arranged along the distribution direction of the multiple clamping components; the surface of the pushing member in contact with the two clamping claws is an outward convex arc surface.

[0011] Furthermore, one end of the two clamping jaws for clamping the object is respectively provided with a positioning protrusion which can be inserted into a surface groove of the object.

[0012] Furthermore, the two clamping jaws are respectively single-finger structures, and the distribution direction of the two clamping jaws is perpendicular to the distribution direction of the multiple clamping components.

[0013] Furthermore, the number of the clamping units is one or more, the number of the power components is consistent with the number of the clamping units, and the clamping units correspond to the power components one by one.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The arrangement of the power component, the pusher, the plurality of clamping components and the reset part enables the present invention to control the synchronous opening and closing of the two clamping jaws of the plurality of clamping components with a relatively small number of power components and a simple transmission method, thereby greatly reducing the cost and making the structure of the entire device simpler, smaller in size and less space occupied.

[0016] 2. The reset component is preferably a spring, which has low cost and is easy to assemble.

[0017] 3. The fixed body preferably includes the base and two spring seats, so that a plurality of clamping components share the two spring seats, and the structure of the fixed body is simpler and easier to process.

[0018] 4. The setting of the limiter can prevent the closing stroke of the two clamping jaws from being too large and thus requiring a high elastic capacity of the spring.

[0019] 5. The setting of the guiding inclined surface enables the pusher to move smoothly without jamming, and makes the cooperation between the pusher and the two clamping jaws very simple. The pusher only needs to move along the guiding inclined surface to push open one end of the two clamping jaws used to clamp the object.

[0020] 6. The pusher adopts an outer convex arc surface to contact and cooperate with the two clamping claws, which can reduce the contact friction between the pusher and the clamping claws and avoid scratches.

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; however, the clamping device of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 3 The present invention is a cross-sectional view Figure 1 ;

[0025] Figure 4 The present invention is a cross-sectional view Figure 2 . DETAILED DESCRIPTION

[0026] For examples, see Figure 1-Figure 4 As shown, a clamping device of the present invention includes a fixed body, a clamping unit, a power component and a pushing member 6, the clamping unit includes a plurality of clamping components distributed in parallel, each clamping component includes two clamping jaws 1, the two clamping jaws 1 are respectively rotatably connected to the fixed body, and the two clamping jaws 1 are arranged opposite to each other; the power component is arranged on the fixed body, and when started, the two clamping jaws 1 of each clamping component are pushed by the pushing member 6, so that one end of the two clamping jaws 1 used for clamping an object is separated from each other; the two clamping jaws 1 of each clamping component are respectively matched with a reset component with the fixed body, or the two clamping jaws 1 of each clamping component are matched with a reset component, and the reset component drives the two clamping jaws 1 to reset, so that one end of the two clamping jaws 1 used for clamping an object is close to each other.

[0027] In this embodiment, the reset component is a spring 7, and the spring 7 is against the jaws and the fixed body. In other embodiments, the spring is connected between the two jaws. In other embodiments, the reset component includes a first magnet and a second magnet, the first magnet is arranged on the fixed body, and the second magnet is arranged on the jaws, or the first magnet and the second magnet are arranged on the two jaws respectively, and the first magnet and the second magnet have opposite magnetic poles to each other, so as to drive the two jaws to reset by magnetic attraction. In other embodiments, the reset component includes the first magnet, the second magnet and the spring.

[0028] In this embodiment, the fixed body includes a base 2 and two spring seats 3, the two spring seats 3 are respectively fixed on two opposite surfaces of the base 2, the other ends of the two clamping jaws 1 of each clamping unit are respectively rotatably connected to the base 2, and the springs 7 are respectively arranged between the two clamping jaws 1 of each clamping unit and the two spring seats 3; the power component is arranged on the base 2. The two spring seats 3 are respectively fixed on the top and bottom surfaces of the base 2 by screws, and the power component is located on the rear side of the base 2. The other ends of the two clamping jaws 1 of each clamping unit extend into the base 2 at the front side of the base 2, and are connected by a rotating shaft. The two clamping jaws 1 are respectively single-finger structures, but are not limited to this. In other embodiments, the two clamping jaws are respectively multi-finger structures. The distribution direction of the two clamping jaws 1 is perpendicular to the distribution direction of the multiple clamping components. Specifically, the two clamping jaws 1 are distributed up and down, and the multiple clamping components are distributed along the length direction of the base 2.

[0029] In this embodiment, a stopper 8 is provided in the base 2, and the stopper 8 is located between the two clamping jaws 1 to limit the two clamping jaws 1 when one end of the two clamping jaws 1 for clamping an object is close to each other. The stopper 8 is a rod structure, which is provided along the length direction of the base 2 and is screwed in the base 2.

[0030] In this embodiment, a guiding slope 12 is respectively provided at the other end of the two clamping jaws 1. The two guiding slopes 12 are arranged opposite to each other, and the distance between the two guiding slopes 12 gradually increases from the end of the guiding slope 12 away from the power component to the end of the guiding slope 12 close to the power component. The pushing member 6 is pushed and matched with the two guiding slopes 12. The pushing member 6 is a rod structure, which is arranged along the distribution direction of the multiple clamping components. The surface of the pushing member 6 in contact with the two clamping jaws 1 is an outward convex arc surface, so that the contact friction between the pushing member 6 and the clamping jaws can be reduced to avoid scratches.

[0031] In this embodiment, the power component is a cylinder 4, whose piston rod extends into the base 2 at the rear side of the base 2 and is fixedly connected to the pusher 6 by screws. In other embodiments, the power component is an electric push rod or a hydraulic cylinder.

[0032] In this embodiment, one end of the two clamping jaws 1 for clamping an object is bent toward each other, and each is provided with a positioning protrusion 11 that can be inserted into a surface groove of the object.

[0033] In this embodiment, the number of the clamping units is several, and the several clamping units are respectively distributed along the length direction of the base 2. Specifically, the number of the clamping units is two, and each clamping unit includes four clamping components, but it is not limited to this. According to the number and spacing of the clamping components, more clamping components can be installed on the base 2, so as to achieve the requirement of synchronous action of multiple clamping components in a limited space. The number of the power components is consistent with the number of the clamping units, and the clamping units correspond to the power components one by one.

[0034] A clamping device of the present invention, when working, the cylinder 4 is started, and its piston rod extends, driving the pushing member 6 to move forward along the guiding inclined surface 12 of the two clamping jaws 1 of each clamping component, so that the two clamping jaws 1 of the four clamping components rotate synchronously in the opposite direction, so that the two clamping jaws 1 of each clamping component are used to clamp the end of the object separated from each other; when the product enters between the two ends of the two clamping jaws 1 used to clamp the object, the piston rod of the cylinder 4 retracts, driving the pushing member 6 to move backward, at this time, the two clamping jaws 1 of each clamping component are reset respectively under the restoring force of the spring 7, so that the two clamping jaws 1 of each clamping component are used to clamp the end of the object close to each other to clamp the product.

[0035] A clamping device of the present invention can control the synchronous opening and closing of two clamping jaws of multiple clamping components by using a relatively small number of power components and a simple transmission method, thereby greatly reducing the cost and making the structure of the entire device simpler, smaller in size, and reducing the space occupied.

[0036] The above embodiments are only used to further illustrate a clamping device of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the technical solution of the present invention.

Claims

1. A clamping device, characterized in that: The invention comprises a fixed body, a clamping unit, a power component and a pushing member. The clamping unit comprises a plurality of clamping components arranged in parallel. Each clamping component comprises two clamping jaws, which are respectively rotatably connected to the fixed body and arranged opposite to each other. The power component is arranged on the fixed body and pushes the two clamping jaws of each clamping component through the pushing member when starting, so that one end of the two clamping jaws used for clamping an object is separated from each other. The two clamping jaws of each clamping component are respectively matched with a reset component on the fixed body, and the reset component drives the two clamping jaws to reset, so that the fixed body The two clamping jaws are used to clamp one end of the object close to each other; the reset component is a spring, the fixed body includes a hollow base and two spring seats, the two spring seats are respectively fixed on two opposite surfaces of the base, the other ends of the two clamping jaws of each clamping unit are respectively rotatably connected to the base, and the springs are respectively abutted between the two clamping jaws of each clamping unit and the two spring seats; a limiter is provided in the base, and the limiter is located between the two clamping jaws to limit the two clamping jaws when one end of the two clamping jaws used to clamp the object is close to each other.

2. The clamping device according to claim 1, characterized in that: The power component is arranged on the base.

3. The clamping device according to claim 1, characterized in that: The other ends of the two clamping jaws are respectively provided with a guiding slope, the two guiding slopes are arranged opposite to each other, and the distance between the two guiding slopes gradually increases from the end of the guiding slope away from the power component to the end of the guiding slope close to the power component; the pushing member is pushed and matched with the two guiding slopes.

4. The clamping device according to claim 1, characterized in that: The power component is a cylinder, and the piston rod of the cylinder is fixedly connected to the pushing member.

5. The clamping device according to claim 1, 3 or 4, characterized in that: The pushing member is a rod structure, which is arranged along the distribution direction of the plurality of clamping components; the surface of the pushing member in contact with the two clamping claws is an outward convex arc surface.

6. The clamping device according to claim 1, characterized in that: One end of the two clamping jaws used for clamping an object is respectively provided with a positioning convex portion which can be inserted into a surface groove of the object.

7. The clamping device according to claim 1, characterized in that: The two clamping jaws are respectively single-finger structures, and the distribution direction of the two clamping jaws is perpendicular to the distribution direction of the multiple clamping components.

8. The clamping device according to claim 1, characterized in that: The number of the clamping units is one or more, the number of the power components is consistent with the number of the clamping units, and the clamping units correspond to the power components one by one.

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