CN216888977U - Clamping device - Google Patents

Abstract

The utility model relates to the technical field of clamping devices and discloses a clamping device. The clamping device comprises a clamping jaw, a prepressing assembly and at least two extension assemblies. The clamping jaw comprises at least two jaw fingers, and the at least two jaw fingers can approach or move away from each other; the extending assemblies are connected with the fingers in a one-to-one corresponding mode, each extending assembly comprises an extending arm and clamping pieces, one end of each extending arm is connected to the corresponding finger, the corresponding finger is opposite to the outer side wall of the other fingers, the other end of each extending arm extends towards the direction away from the clamping jaw and is connected to the clamping pieces, and the at least two clamping pieces can be synchronously close to or far away from the clamping jaws along with the at least two fingers; the pre-pressing component comprises a pressing piece, the pressing piece is elastically connected with the clamping jaw, and the pressing piece can be pressed on the to-be-clamped piece from top to bottom. The clamping device provided by the utility model can expand the width of the part which can be clamped by the clamping jaw, so that the clamping jaw can clamp the part with the width larger than the width of the clamping jaw, the structure is simple, the cost of the clamping device is reduced, and the part can be stably clamped.

Description

Clamping device

Technical Field

The utility model relates to the technical field of clamping devices, in particular to a clamping device.

Background

In the process of part machining, a pneumatic clamping jaw is usually adopted to clamp a part, so that the part is convenient to transport to the next station. Because the part needs the centre gripping between two claw fingers of pneumatic clamping jaw, the part that width is less than clamping jaw self width only can be got to pneumatic clamping jaw promptly, if need get bigger part, need adopt the pneumatic clamping jaw that the size is bigger, and the cost is higher.

Accordingly, a clamping device is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a clamping device, which can enlarge the width of a part which can be clamped by a clamping jaw, enables the clamping jaw to clamp the part with the width larger than the width of the clamping jaw, has a simple structure, is beneficial to reducing the cost of the clamping device and ensures that the part can be stably clamped.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a clamping device, comprising:

a clamping jaw comprising at least two clamping fingers, at least two of said clamping fingers being capable of moving towards and away from each other;

the extending assemblies are connected with the fingers in a one-to-one correspondence mode, each extending assembly comprises an extending arm and a clamping piece, one end of each extending arm is connected to the corresponding finger, back to the outer side wall of the other fingers, the other end of each extending arm extends towards the direction away from the clamping jaw and is connected to the clamping piece, and the at least two clamping pieces are configured to be capable of synchronously approaching or departing along with the at least two fingers;

the prepressing assembly comprises a pressing piece, the pressing piece is elastically connected with the clamping jaw, and the pressing piece can be pressed on the to-be-clamped piece from top to bottom.

As an alternative to the clamping device, the clamping jaw further comprises a driving member, and the driving member can drive at least two of the clamping fingers to move towards or away from each other.

As an optional technical scheme of the clamping device, the clamping device further comprises a guide piece, the guide piece is connected to the driving piece, the extension assembly is connected with the guide piece in a sliding mode, and the guide piece is parallel to the moving direction of the claw finger correspondingly connected with the extension assembly.

As an optional technical scheme of the clamping device, the two claw fingers are arranged at two ends of the clamping jaw along a first direction respectively, the two claw fingers can be close to or far away from each other along the first direction, the guide piece extends along the first direction, and two ends of the guide piece are connected with the two extending assemblies in a sliding mode respectively.

As an optional technical solution of the clamping device, the pre-pressing assembly further includes an elastic member, one end of the elastic member is connected to the clamping jaw, and the other end of the elastic member is connected to the pressing member.

As an optional technical scheme of the clamping device, the pre-pressing assembly further comprises a limiting ring, one end of the limiting ring is connected to the clamping jaw, and the pressing piece is located on the inner side of the limiting ring and can extend out of the other end of the limiting ring.

As an alternative to the clamping device, the clamping device further includes an extension member, the extension member is connected to the clamping jaw, and an end of the extension member extends in a direction away from the clamping jaw and is elastically connected to the pressing member.

As an optional technical scheme of the clamping device, the middle part of the extension piece is connected to the clamping jaw, and both ends of the extension piece are connected with the pressing piece.

As an alternative solution of the clamping device, a protruding portion for bearing the to-be-clamped member is convexly arranged on a side wall of the clamping member facing to the clamping jaw.

As an optional technical scheme of the clamping device, the extension arm is detachably connected with the claw finger.

The utility model has the beneficial effects that:

the embodiment provides a clamping device, which comprises a clamping jaw, an extension assembly and a prepressing assembly. The arm of extending of subassembly that extends connects on the claw of clamping jaw indicates, and the arm that extends along the direction of keeping away from the clamping jaw and be connected with the holder, and when the centre gripping part, the claw indicates to keep away from earlier each other earlier and is close to, and the claw indicates to drive the subassembly that extends and remove, makes the holder keep away from each other earlier and is close to each other again, realizes that the part is by the holder centre gripping of subassembly that extends. The part width that the clamping jaw can the centre gripping can be enlarged in the setting of subassembly of extending, makes the clamping jaw can the centre gripping width be greater than the part of clamping jaw self width, and simple structure has also avoided using large-scale clamping jaw simultaneously, is favorable to reducing clamping device's cost. In addition, set up pre-compaction subassembly, also can compress tightly the part through the press part earlier before pressing from both sides the part, prevent that the part from removing, guaranteed to press from both sides and get efficiency, also guaranteed to press from both sides stably and get the part.

Drawings

FIG. 1 is a schematic structural diagram of a clamping device provided in an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a partial structural schematic diagram of a clamping device provided in an embodiment of the present invention.

In the figure:

10. a part;

1. a clamping jaw; 11. a claw finger; 12. a drive member; 121. a fixing plate;

2. an epitaxial component; 21. an extension arm; 211. a connecting member; 22. a clamping member; 221. a first connection portion; 2211. a projection; 222. a second connecting portion;

3. a pre-pressing component; 31. a pressing member; 32. an elastic member; 33. a limiting ring;

4. an extension member; 41. a vertical plate; 411. avoiding the mouth; 412. a connecting edge; 42. a transverse plate;

5. a guide member;

6. and a linear bearing.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

The present embodiment provides a clamping device for clamping a part 10 as shown in fig. 1, wherein the part 10 is in a square frame shape. In particular, as shown in fig. 1-3, the clamping device comprises a clamping jaw 1, a pre-pressing assembly 3 and at least two epitaxial assemblies 2. The clamping jaw 1 comprises at least two clamping fingers 11, and the at least two clamping fingers 11 can approach or depart from each other; the extending assemblies 2 are connected with the fingers 11 in a one-to-one correspondence mode, each extending assembly 2 comprises an extending arm 21 and a clamping piece 22, one end of each extending arm 21 is connected to the corresponding finger 11 and is opposite to the outer side wall of the other fingers 11, the other end of each extending arm extends in the direction away from the clamping jaw 1 and is connected to the clamping piece 22, and the at least two clamping pieces 22 are configured to be capable of synchronously approaching or departing along with the at least two fingers 11; the pre-pressing component 3 comprises a pressing part 31, the pressing part 31 is elastically connected with the clamping jaw 1, and the pressing part 31 can press against the to-be-clamped part from top to bottom. Wherein the piece to be clamped is a part 10.

The embodiment provides a clamping device, and the clamping device comprises a clamping jaw 1, an epitaxial assembly 2 and a prepressing assembly 3. The arm 21 that extends of subassembly 2 that extends connects on the claw of clamping jaw 1 indicates 11, and the arm 21 that extends and be connected with holder 22 along the direction of keeping away from clamping jaw 1, and when clamping part 10, the claw indicates 11 to keep away from earlier each other and then is close to, and claw indicates 11 to drive subassembly 2 that extends and move, makes holder 22 keep away from each other earlier and then is close to each other, realizes that part 10 is by the holder 22 centre gripping of subassembly 2 that extends. The arrangement of the extension assembly 2 can enlarge the width of a part which can be clamped by the clamping jaw 1, so that the clamping jaw 1 can clamp the part 10 with the width larger than the width of the clamping jaw 1, the structure is simple, the use of a large-scale clamping jaw is avoided, and the cost of the clamping device is reduced. In addition, the pre-pressing assembly 3 is arranged, so that the part 10 can be pressed tightly through the pressing piece 31 before the part 10 is clamped, the part 10 is prevented from moving, the clamping efficiency is guaranteed, and the part 10 can be stably clamped.

Preferably, the clamping jaw 1 further comprises a driving member 12, and the driving member 12 can drive the at least two clamping fingers 11 to approach or separate from each other, so that the automation degree of the clamping device is improved, and the use convenience is improved. In this embodiment, the clamping jaw 1 is a pneumatic clamping jaw, the driving member 12 is an air cylinder, two ends of the air cylinder along the first direction are respectively provided with one claw finger 11, and the air cylinder can drive the two claw fingers 11 to move along the first direction, so as to realize clamping and releasing. Specifically, in fig. 1, the first direction is an X direction, and the second direction is a Y direction. Other structures of the pneumatic clamping jaw can be referred to in the prior art, and are not described in detail herein.

In particular, the extension assembly 2 is attached to both sides of the two fingers 11 facing away from each other. The extension arm 21 of the extension assembly 2 is plate-shaped and extends in the first direction, and one end of the extension arm 21 away from the claw finger 11 is connected to the clamping member 22. In the present embodiment, the finger 11 has a plate shape, and the first direction is perpendicular to the finger 11, that is, the extension arm 21 is perpendicular to the finger 11.

Preferably, the extension arm 21 is detachably connected with the claw finger 11, and the extension arm 21 with different lengths can be replaced according to the width of the actual part 10, so that the application range of the clamping device is further expanded, and the practicability is improved. In the present embodiment, the extension arm 21 and the claw finger 11 are detachably connected by a bolt.

Further, the clamping member 22 is of an inverted T shape, and the clamping member 22 includes a first connecting portion 221 and a second connecting portion 222 connected in a T shape, and the second connecting portion 222 is connected between the first connecting portion 221 and the extension arm 21. The second connecting portion 222 is plate-shaped and is vertically connected to the extension arm 21. The first connecting portion 221 extends along the second direction and is perpendicular to the second connecting portion 222, and the first connecting portion 221 is used for contacting the part 10. The structure arrangement can increase the contact area between the clamping piece 22 and the part 10, and ensures that the clamping device can stably clamp the part 10.

Preferably, the side wall of the clamping piece 22 facing to the clamping jaw 1 is provided with a protruding part 2211 for bearing the piece to be clamped. When the holding device holds the part 10, the protrusion 2211 can contact with the bottom surface of the part 10, preventing the part 10 from being separated from the holding member 22, further ensuring that the holding device can hold the part 10 smoothly. Specifically, a side wall of the first connecting portion 221 facing the clamping jaw 1 is provided with a protruding portion 2211, and the protruding portion 2211 is located at one end of the side wall far away from the second connecting portion 222. To further increase the contact area between the projection 2211 and the part 10, the projection 2211 is in the shape of a bar extending in the second direction.

Preferably, the clamping device further comprises a guide 5, the guide 5 is connected to the driving member 12, the extension assembly 2 is slidably connected to the guide 5, and the guide 5 is parallel to the moving direction of the claw finger 11 correspondingly connected to the extension assembly 2. That is, the guide 5 extends in the first direction. The guide piece 5 is arranged, so that the moving direction of the extension assembly 2 is ensured, the claw fingers 11 are ensured to drive the extension assembly 2 to approach or keep away from each other, and the clamping effect of the clamping piece 22 is ensured. Specifically, the clamping member 22 and the guiding member 5 are both located below the extension arm 21, the bottom of the driving member 12 is connected with a fixing plate 121, and the guiding member 5 is fixedly disposed through the fixing plate 121.

In the present embodiment, the guide 5 extends along the first direction, and both ends of the guide 5 are slidably connected to the two extension assemblies 2, respectively. The structure arrangement reduces the arrangement quantity of the guide pieces 5, is convenient for production and processing and is also beneficial to reducing the cost.

Specifically, the guide member 5 is rod-shaped, and two guide members are provided at intervals in the second direction, which further improves the guiding function of the guide member 5. The bottom surface of the extension arm 21 is connected with a connecting piece 211, the two guide pieces 5 penetrate through the connecting piece 211, and the connecting piece 211 slides on the guide pieces 5 through the linear bearing 6.

In other embodiments, when the number of the fingers 11 is greater than two, one extension assembly 2 is connected to each finger 11, and the guide 5 may be connected to the extension assemblies 2 in a one-to-one correspondence. The guide 5 is connected at one end to the drive member 12 and at the other end to the extension assembly 2. In other embodiments, the number of fingers 11 and extension assemblies 2 may be different, but each finger 11 needs to be connected to an extension assembly 2.

Preferably, as shown in fig. 1-3, the pre-pressing assembly 3 further includes an elastic member 32, one end of the elastic member 32 is connected to the clamping jaw 1, and the other end is connected to the pressing member 31. The elastic connection between the pressing piece 31 and the clamping jaw 1 is realized through the elastic piece 32, the structure is simple, and the cost is favorably reduced. In this embodiment, the elastic element 32 is a spring, one end of the spring is connected to the driving element 12, the other end of the spring is connected to the pressing element 31, and the pressing element 31 is in a block shape.

Furthermore, the pre-pressing assembly 3 further comprises a limiting ring 33, one end of the limiting ring 33 is connected to the clamping jaw 1, and the pressing part 31 is located on the inner side of the limiting ring 33 and can extend out of the other end of the limiting ring 33. The limiting ring 33 is arranged to be beneficial to limiting the moving direction of the pressing part 31, the pressing part 31 can be pressed on the part 10, the function of the pre-pressing assembly 3 is guaranteed, the part 10 is further prevented from moving, and the part 10 can be stably clamped by the clamping device.

The part 10 in this embodiment is in the form of a box, and the jaw 1 is located above the centre of the box when the two clamping members 22 are clamped to two of the sides of the part 10 respectively. Preferably, the clamping device further comprises an extension piece 4. The extension piece 4 is connected to the clamping jaw 1, and the end part of the extension piece 4 extends towards the direction far away from the clamping jaw 1 and is elastically connected with the pressing piece 31. Set up extension 4 for pre-compaction subassembly 3 and clamping jaw 1 interval set up, there is certain distance promptly between pre-compaction subassembly 3 and the clamping jaw 1, do benefit to pre-compaction subassembly 3 and support to press on part 10, further prevent that part 10 from being removed before by the centre gripping. In the embodiment, the extension piece 4 extends along the second direction, and the middle portion of the extension piece 4 is connected to the clamping jaw 1, that is, when the two clamping pieces 22 are clamped on two sides of the component 10 respectively, the pressing piece 31 is abutted with the unclamped side of the component 10.

Preferably, both ends of the extension piece 4 are connected with the pressing pieces 31, and the two pressing pieces 31 on the same extension piece 4 are respectively abutted against the side edges of the two opposite sides of the part 10, so that the pressure applied to the part 10 is ensured to be balanced, the part 10 is prevented from inclining in the moving process, and the part can be stably clamped by the clamping device. In the embodiment, the extension member 4 is located below the driving member 12, two extension members 4 are arranged at intervals along the first direction, and two extension members 4 are respectively arranged on two sides of the fixing plate 121 along the first direction.

Specifically, the extension 4 is L-shaped and includes a vertical plate 41 and a horizontal plate 42 connected vertically, the horizontal plate 42 is connected to the bottom of the vertical plate 41, and the top of the vertical plate 41 is connected to the bottom surface of the driving member 12. The transverse plates 42 of the two elongate members 4 extend away from each other. Both ends of the bottom surface of the transverse plate 42 are connected with the pre-pressing assemblies 3. An avoiding opening 411 is formed in the vertical plate 41, and the guide piece 5 penetrates through the avoiding opening 411. In order to increase the connection area between the vertical plate 41 and the driver 12, a connection edge 412 is bent at the top of the vertical plate 41, and the connection edge 412 is attached and connected with the bottom surface of the driver 12.

In other embodiments, the pre-pressing assembly 3 may further include a guide rod, the guide rod is disposed in the spring, one end of the guide rod movably penetrates the extension member 4, and the other end of the guide rod is connected to the pressing member 31, so as to further achieve a guiding effect on the pressing member 31.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A clamping device, comprising:

a clamping jaw (1) comprising at least two jaw fingers (11), at least two of said jaw fingers (11) being able to move towards or away from each other;

the extending assemblies (2) are connected with the fingers (11) in a one-to-one correspondence mode, each extending assembly (2) comprises an extending arm (21) and a clamping piece (22), one end of each extending arm (21) is connected to the outer side wall of the corresponding finger (11) opposite to the other fingers (11), the other end of each extending arm extends in the direction away from the clamping jaw (1) and is connected to the clamping piece (22), and at least two clamping pieces (22) are configured to be capable of synchronously approaching or departing along with at least two fingers (11);

the prepressing assembly (3) comprises a pressing part (31), the pressing part (31) is elastically connected with the clamping jaw (1), and the pressing part (31) can be pressed on the to-be-clamped part from top to bottom.

2. Gripping device according to claim 1, characterized in that the gripping jaw (1) further comprises a drive (12), which drive (12) is able to drive at least two of the fingers (11) towards or away from each other.

3. Clamping device according to claim 2, characterized in that it further comprises a guide (5), said guide (5) being connected to said driving element (12), said extension assembly (2) being slidingly connected to said guide (5), said guide (5) being parallel to the direction of movement of said fingers (11) of the corresponding connection of said extension assembly (2).

4. Clamping device according to claim 3, characterized in that said fingers (11) are provided in two and respectively at two ends of said clamping jaw (1) along a first direction, said two fingers (11) being able to move towards and away from each other along said first direction, said guide (5) extending along said first direction, said guide (5) being slidably connected at its two ends to said two extension assemblies (2), respectively.

5. Clamping device according to claim 1, characterized in that the pre-pressing assembly (3) further comprises an elastic member (32), one end of the elastic member (32) being connected to the clamping jaw (1) and the other end being connected to the pressing member (31).

6. The clamping device according to claim 1, characterized in that the pre-pressing assembly (3) further comprises a limiting ring (33), one end of the limiting ring (33) is connected to the clamping jaw (1), and the pressing piece (31) is located inside the limiting ring (33) and can extend out from the other end of the limiting ring (33).

7. Clamping device according to claim 1, characterized in that the clamping device further comprises an extension piece (4), the extension piece (4) being connected to the clamping jaw (1), the end of the extension piece (4) extending away from the clamping jaw (1) and being resiliently connected to the press-on piece (31).

8. Clamping device according to claim 7, characterized in that the extension piece (4) is connected to the jaw (1) in the middle and the pressing element (31) is connected to both ends of the extension piece (4).

9. Clamping device according to any one of claims 1-8, characterized in that the side wall of the clamping piece (22) facing the clamping jaw (1) is provided with a projection (2211) for carrying the piece to be clamped.

10. Clamping device according to any of claims 1-8, characterized in that the extension arm (21) is detachably connected to the claw finger (11).

Images