gripping device

Abstract

The application provides a clamping device, comprising a clamping seat, further comprising: a clamping assembly, comprising at least one pair of clamping pieces arranged on both sides of the clamping seat, each clamping piece comprising a plurality of sequentially hinged housings, one end of the plurality of housings being connected to the clamping seat, and the other end being used for bending towards the other clamping piece; a stretching assembly, comprising a stretching driving piece and a stretching piece, the stretching driving piece being connected to one of the housings close to the clamping seat, and the stretching driving piece being connected to the stretching piece, the stretching piece being connected to one of the housings away from the clamping seat, and the stretching driving piece being used for pulling the stretching piece to move close to or away from the clamping seat. The clamping device can rotate the plurality of housings by different angles and make the surfaces of the plurality of housings be in close contact with the surface of a workpiece when clamping, so that the contact area of the plurality of housings and the workpiece is larger, the clamping force position distribution of the workpiece is uniform, the clamping of the workpiece is more stable, the workpiece is not easy to slide during the moving process, and the placement position is more accurate.

Description

Technical Field

[0001] This application relates to the field of workpiece clamping technology, specifically to a clamping device. Background Technology

[0002] Currently, some clamping devices, when gripping, moving, and placing workpieces, have a small contact area between the clamping device and the workpiece due to the irregular surface of the workpiece. This results in an uneven distribution of clamping force on the workpiece, leading to unstable clamping, easy slippage during handling, and inaccurate placement, which affects the normal operation of subsequent processing. Summary of the Invention

[0003] In view of the above problems, this application proposes a clamping device to solve the technical problems of unstable workpiece clamping, easy slippage during handling, and inaccurate placement.

[0004] This application discloses a clamping device, including a clamping base, and further comprising: a clamping assembly including at least a pair of clamping members disposed on both sides of the clamping base, each clamping member including a plurality of housings sequentially hinged together, one end of the plurality of housings being connected to the clamping base, and the other end being used to bend toward the other clamping member to clamp a workpiece; and a stretching assembly including a stretching drive member and a stretching member respectively disposed corresponding to the clamping members, the stretching drive member being connected to one of the housings near the clamping base, and the drive end of the stretching drive member being connected to one end of the stretching member, the other end of the stretching member being connected to one of the housings away from the clamping base, the stretching drive member being used to pull the stretching member to move closer to or away from the clamping base, so as to bend or release the clamping member, thereby clamping or releasing the workpiece.

[0005] In some embodiments, when the clamping members are a pair, the pair of clamping members are arranged opposite to each other; when the clamping members are multiple pairs, the multiple pairs of clamping members are arranged opposite to each other or staggered.

[0006] In some embodiments, the clamping assembly further includes a plurality of hinges corresponding to the clamping members. Each hinge includes: a rotating shaft disposed within the housing, partially sleeved between two adjacent housings, each end of the rotating shaft being rotatably connected to the sleeved portions of the two adjacent housings; a movable shaft disposed within the housing, located between the rotating shaft and the inner wall of the housing opposite to the rotating shaft, each end of the movable shaft being movably connected to the sleeved portions of the two adjacent housings; and an elastic member disposed on the rotating shaft within the housing, with both ends movably disposed within the housing, for abutting against the inner wall of the housing when the plurality of housings are subjected to force, so that the movable shaft drives the correspondingly connected housing to rotate relative to the adjacent housings around the rotating shaft as the rotation center, thereby causing the plurality of housings to bend.

[0007] In some embodiments, the sleeve portions of two adjacent housings are respectively provided with a first hole and a second hole, and each end of the rotating shaft is provided in the first hole and the second hole.

[0008] In some embodiments, the sleeve portions of two adjacent housings are respectively provided with a third hole and a fourth hole, the diameter of the fourth hole is larger than the diameter of the third hole, and the fourth hole is opened on the inner housing of the two adjacent housings. Each end of the movable shaft is provided in the third hole and the fourth hole and is adapted to the diameter of the third hole.

[0009] In some embodiments, the hinge further includes: a limiting shaft disposed within the housing and located between the movable shaft and the inner wall of the housing opposite to the rotation shaft, each end of the movable shaft being connected to a portion of the housing; wherein the tensioning member is located between the limiting shaft and the movable shaft.

[0010] In some embodiments, a fifth hole is provided in the inner housing of two adjacent housings, and each end of the limiting shaft is disposed in the fifth hole.

[0011] In some embodiments, the plurality of housings are connected from one end of the clamping seat to the other end of the plurality of housings away from the clamping seat, and the dimensions of the plurality of housings gradually decrease in the direction perpendicular to the bending plane.

[0012] In some embodiments, the clamping assembly further includes a dustproof component disposed on the gripping surface of the plurality of housings, the gripping surface being correspondingly disposed to the inner wall of the housing opposite to the rotation axis, so as to prevent dust from entering the interior of the housing.

[0013] In some embodiments, the number of housings is at least three, and the end of the tension member away from the tension drive member is connected to the third-to-last housing away from the clamping seat.

[0014] The aforementioned clamping device uses a tension drive to pull the tension member closer to or away from the clamping seat, causing the clamping member to bend or release, thereby clamping or releasing the workpiece. This achieves the gripping and placement of the workpiece. Since the clamping assembly includes multiple sequentially hinged housings, these housings can rotate at different angles during clamping, allowing their surfaces to fit against the workpiece surface. This results in a large contact area between the multiple housings and the workpiece, a uniform distribution of the clamping force on the workpiece, and a more stable clamping mechanism. The workpiece is less prone to slipping during transport, and its placement is more accurate, without affecting the normal operation of subsequent processing. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the clamping device proposed in an embodiment of this application in the ungrabbed state.

[0016] Figure 2 This is a three-dimensional structural diagram of the clamping device in the grasping state according to an embodiment of this application.

[0017] Figure 3 yes Figure 1 A partially exploded structural diagram of the clamping component.

[0018] Figure 4 yes Figure 3 A magnified view of the clamping component at point IV.

[0019] Explanation of main component symbols

[0020] Clamping device 100

[0021] Clamping base 10

[0022] Clamping component 20

[0023] Clamping component 21

[0024] Casing 211

[0025] First hole 2111

[0026] Second hole 2112

[0027] Third hole 2113

[0028] Fourth hole 2114

[0029] Fifth hole 2115

[0030] Grab surface 2116

[0031] Hinged component 22

[0032] Rotating shaft 221

[0033] Active axis 222

[0034] Elastic component 223

[0035] Limiting axis 224

[0036] Dustproof part 23

[0037] Rolling component 24

[0038] Tensioning component 30

[0039] Stretch drive 31

[0040] Stretch part 32 Detailed Implementation

[0041] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0042] Numerous specific details are set forth in the following description to provide a thorough understanding of this application. The described embodiments are merely some, not all, of the embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0044] Please see Figure 1 and Figure 2 This application discloses a clamping device 100 for gripping a workpiece (not shown). In this embodiment, the surface of the workpiece can be flat or uneven. For example, the workpiece is a bundle of tobacco in a tobacco basket. Specifically, the clamping device 100 includes a clamping base 10, a clamping assembly 20, and a stretching assembly 30.

[0045] The clamping assembly 20 includes at least one pair of clamping members 21 disposed on both sides of the clamping base 10. Each clamping member 21 includes a plurality of sequentially hinged housings 211. One end of each housing 211 is connected to the clamping base 10, and the other end is used to bend toward another clamping member 21 to clamp the workpiece. In this embodiment, the plurality of housings 211 are treated as a whole, with one end and the other end of each housing 211 being the two ends of this whole. The stretching assembly 30 includes a stretching drive member 31 and a stretching member 32 respectively disposed corresponding to the clamping members 21. The stretching drive member 31 is connected to one of the housings 211 near the clamping base 10, and the driving end of the stretching drive member 31 is connected to one end of the stretching member 32. The other end of the stretching member 32 is connected to one of the housings 211 away from the clamping base 10. The stretching drive member 31 is used to pull the stretching member 32 to move closer to or away from the clamping base 10, so that the clamping member 21 bends or unbends, thereby clamping or releasing the workpiece. In this embodiment, each clamping member 21 is provided with a stretching assembly 30. The tension drive 31 is a telescopic cylinder. The tension member 32 is a telescopic belt or telescopic rope, but is not limited to these, as long as it can be stretched under the drive of the tension drive 31.

[0046] In this embodiment, there are three pairs of clamping members 21, and the three pairs of clamping members 21 are arranged opposite to each other.

[0047] It is understood that in other embodiments, there are three pairs of clamping members 21, and the three pairs of clamping members 21 are staggered.

[0048] It is understood that in other embodiments, there are three pairs of clamping members 21, with at least one pair of clamping members 21 being arranged opposite each other and at least one pair being staggered.

[0049] It is understood that in other embodiments, the clamping members 21 are a pair, and the pair of clamping members 21 are arranged opposite to each other.

[0050] Please see Figure 3 and Figure 4 The clamping assembly 20 further includes multiple hinges 22, each corresponding to a portion of the adjacent housing 211. Each hinge 22 includes a rotating shaft 221, a movable shaft 222, and an elastic element 223. The rotating shaft 221 is located inside the housing 211, and each end of the rotating shaft 221 is rotatably connected to the portion of the adjacent housing 211. The movable shaft 222 is located inside the housing 211 and is parallel to the rotating shaft 221. The movable shaft 222 is located between the rotating shaft 221 and the inner wall of the housing 211 opposite to the rotating shaft 221. Figure 3The inner wall on the right side of each housing 211 is connected to the sleeve portion of two adjacent housings 211 at each end of the movable shaft 222. An elastic element 223 is disposed on the rotating shaft 221 within the housing 211, with both ends of the elastic element 223 movably disposed within the housing 211. This elastic element 223 is used to abut against the inner wall of the housing 211 when multiple housings 211 are subjected to force, causing the movable shaft 222 to drive the corresponding connected housing 211 to rotate relative to the adjacent housing 211 around the rotating shaft 221 as the rotation center. This causes the multiple housings 211 to bend and grip the workpiece. In this embodiment, the elastic element 223 is a compression spring.

[0051] Please continue reading Figure 4 The sleeve portions of two adjacent housings 211 are respectively provided with a first hole 2111 and a second hole 2112. The first hole 2111 is opened on the outer housing 211 of the two housings 211, and the second hole 2112 is opened on the inner housing 211 of the two housings 211. Each end of the rotating shaft 221 is provided in the first hole 2111 and the second hole 2112, and can rotate in both the first hole 2111 and the second hole 2112.

[0052] The fitting portions of two adjacent housings 211 are respectively provided with a third hole 2113 and a fourth hole 2114. The third hole 2113 is formed on the outer housing 211, and the fourth hole 2114 is formed on the inner housing 211. The diameter of the fourth hole 2114 is larger than the diameter of the third hole 2113. Each end of the movable shaft 222 is located within the third hole 2113 and the fourth hole 2114 and is adapted to the diameter of the third hole 2113. In this embodiment, the fourth hole 2114 is elliptical, which allows the inner housing 211 to rotate relative to the outer housing 211 about the rotation axis 221 as the rotation center.

[0053] The hinge 22 also includes a limiting shaft 224, which is located inside the housing 211 and is parallel to the rotating shaft 221 and the movable shaft 222 respectively. The limiting shaft 224 is located between the movable shaft 222 and the inner wall of the housing 211 opposite to the rotating shaft 221. Each end of the movable shaft 222 is connected to the housing 211. The tension member 32 is located between the limiting shaft 224 and the movable shaft 222. In this way, the position of the tension member 32 can be limited, thereby preventing the tension member 32 from deviating.

[0054] The inner housing 211 of the two adjacent housings 211 is provided with a fifth hole 2115, and each end of the limiting shaft 224 is provided in the fifth hole 2115.

[0055] The clamping assembly 20 also includes a dustproof component 23, which is disposed on the gripping surfaces 2116 of the plurality of housings 211. The gripping surfaces 2116 are correspondingly disposed on the inner walls of the housings 211 opposite to the rotation shaft 221 to prevent dust from entering the interior of the housings 211. That is, the gripping surfaces 2116 are the outer surfaces of the housings 211 corresponding to the inner walls opposite to the rotation shaft 221. In this embodiment, the dustproof component 23 is a dustproof plate.

[0056] Please continue reading Figure 3 Multiple housings 211 are connected to one end of the clamping seat 10 and to the other end of the multiple housings 211 away from the clamping seat 10. The multiple housings 211 have a dimension H perpendicular to the bending plane, and the dimension H gradually decreases. In this way, the resistance to gripping the workpiece can be reduced.

[0057] The number of housings 211 is at least three. The end of the tension member 32 away from the tension drive member 31 is connected to the third-to-last housing 211 or the limiting shaft 224 away from the clamping seat 10. This is because when gripping large workpieces, the penultimate and second-to-last housings 211 away from the clamping seat 10 play a minor role and can move freely under the action of the elastic member 223. Thus, even if the driving force of the tension drive member 31 is small, it can still achieve a better gripping effect. In this embodiment, the number of housings 211 is nine, and the end of the tension member 32 away from the tension drive member 31 is connected to the limiting shaft 224 between the second-to-last and third-to-last housings 211 away from the clamping seat 10.

[0058] It is understood that in other embodiments, the number of housings 211 may be 7 or 12, but is not limited thereto.

[0059] It is understood that in other embodiments, the end of the tension member 32 away from the tension drive member 31 is connected to the penultimate housing 211 or the second housing 211 away from the end of the clamping seat 10.

[0060] The gripping assembly also includes a roller 24, which is rotatably disposed at the end of the plurality of housings 211 away from the clamping seat 10 to facilitate the movement of the plurality of housings 211. In this embodiment, the roller 24 is a wheel.

[0061] The aforementioned clamping device 100, by pulling the tensioning member 32 away from the clamping seat 10 through the tensioning drive member 31, can release the bending of the multiple housings 211, i.e. Figure 1 As shown, at this time, the clamping member 21 does not grip the workpiece; by pulling the stretching member 32 closer to the clamping seat 10 through the stretching drive member 31, the multiple housings 211 can be bent, that is, as shown Figure 2As shown, the clamping member 21 grips the workpiece at this time; thus, by driving the stretching drive member 31, the workpiece can be gripped and placed. Since the clamping assembly 20 includes multiple sequentially hinged housings 211, the multiple housings 211 can rotate at different angles during clamping and make their surfaces fit against the surface of the workpiece. This results in a large contact area between the multiple housings 211 and the workpiece, a uniform distribution of the clamping force on the workpiece, and a more stable clamping of the workpiece. It is not easy to slip during the transfer process, and the placement position is more accurate, which does not affect the normal operation of subsequent processing.

[0062] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or computer devices recited in a computer device claim may also be implemented by the same unit or computer device through software or hardware. The terms "first," "second," etc., are used to indicate names and do not indicate any particular order.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A clamping device, comprising a clamping base, characterized in that, Also includes: The clamping assembly includes at least one pair of clamping members disposed on both sides of the clamping seat. Each clamping member includes a plurality of housings that are sequentially hinged together. One end of the plurality of housings is connected to the clamping seat, and the other end is used to bend toward the other clamping member to clamp a workpiece. A stretching assembly includes a stretching drive and a stretching member respectively disposed corresponding to the clamping member. The stretching drive is connected to one of the housings near the clamping seat, and the driving end of the stretching drive is connected to one end of the stretching member. The other end of the stretching member is connected to one of the housings away from the clamping seat. The stretching drive is used to pull the stretching member closer to or away from the clamping seat to bend or release the clamping member, thereby clamping or releasing the workpiece. The clamping assembly further includes a plurality of hinges, each hinge corresponding to a portion of the adjacent housing. A rotating shaft is disposed inside the housing, and each end of the rotating shaft is rotatably connected to the sleeve portion of two adjacent housings; A movable shaft is disposed inside the housing and located between the rotating shaft and the inner wall of the housing opposite to the rotating shaft. Each end of the movable shaft is movably connected to the sleeve portion of two adjacent housings. An elastic element is provided on the rotating shaft inside the housing, and both ends of the elastic element are movably disposed inside the housing. It is used to abut against the inner wall of the housing when multiple housings are subjected to force, so that the movable shaft drives the corresponding connected housing to rotate relative to the adjacent housing with the rotating shaft as the rotation center, thereby causing multiple housings to bend. The sleeve portions of two adjacent housings are respectively provided with a third hole and a fourth hole. The diameter of the fourth hole is larger than that of the third hole, and the fourth hole is opened on the inner housing of the two adjacent housings. Each end of the movable shaft is provided in the third hole and the fourth hole and is adapted to the diameter of the third hole. The fourth hole is elliptical.

2. The clamping device as described in claim 1, characterized in that, When there is a pair of clamping members, the pair of clamping members are arranged opposite to each other; when there are multiple pairs of clamping members, the multiple pairs of clamping members are arranged opposite to each other or staggered.

3. The clamping device as described in claim 1, characterized in that, The two adjacent housing portions are respectively provided with a first hole and a second hole, and each end of the rotating shaft is provided in the first hole and the second hole.

4. The clamping device as described in claim 1, characterized in that, The hinge also includes: A limiting shaft is provided inside the housing and is located between the movable shaft and the inner wall of the housing opposite to the rotating shaft. Each end of the movable shaft is connected to the housing. The tensioning member is located between the limiting shaft and the movable shaft.

5. The clamping device as described in claim 4, characterized in that, A fifth hole is provided in the inner housing of two adjacent housings, and each end of the limiting shaft is located in the fifth hole.

6. The clamping device as claimed in claim 1, characterized in that, Along the plurality of housings connected to one end of the clamping seat to the other end of the plurality of housings away from the clamping seat, the dimensions of the plurality of housings gradually decrease in the direction perpendicular to the bending plane.

7. The clamping device as claimed in claim 1, characterized in that, The clamping assembly further includes: A dustproof component is provided on the gripping surface of the plurality of housings, the gripping surface being correspondingly arranged with the inner wall of the housing opposite to the rotating shaft, to prevent dust from entering the interior of the housing.

8. The clamping device as claimed in claim 1, characterized in that, The number of housings is at least three, and the end of the tension member away from the tension drive member is connected to the third-to-last housing or limiting shaft away from the clamping seat.

Images