CN114851156A - Hand-held spherical clamping device - Google Patents

Abstract

The invention discloses a handheld spherical clamping device: the clamping device comprises an operating rod and side clamping jaws, wherein the side clamping jaws comprise at least two outer clamping jaws and at least two inner clamping jaws, a mounting seat is arranged at the end part of the operating rod, and the end parts of the outer clamping jaws and the inner clamping jaws are hinged to the mounting seat; the outer clamping jaw and the inner clamping jaw are alternately connected; the inner surface of the outer clamping jaw is provided with a plurality of inner clamping grooves which are distributed circumferentially, the outer surface of the inner clamping jaw is provided with outer clamping grooves which are distributed transversely and circumferentially, and the inner clamping grooves and the outer clamping grooves are alternately connected; when the side clamping jaws swing to a preset angle, all the end clamping jaws can form a closed spherical surface. The biggest difference of the invention is that the product is contained by a relatively closed cavity, rather than being transported in a short distance by means of clamping force in the prior art, and the product is only acted by gravity in the clamping jaw, so that the product cannot be deformed or the surface quality is not damaged by the clamping force.

Description

Hand-held spherical clamping device

Technical Field

The invention relates to the technical field of nonstandard tools, in particular to a handheld spherical clamping device.

Background

In the field of machinery, clamping jaws are common production tools, equipment. The clamping jaws of the prior art are usually driven by pneumatic force to open or close all the clamping jaws simultaneously, while the clamping jaws of the prior art fix the clamping object by their own clamping force during the clamping process. The above-mentioned clamping method has a significant disadvantage in that when a product with insufficient rigidity is clamped, it is easily deformed, and the surface quality thereof is affected. For example, when a heated steel ball or glass ball is clamped by the existing three-gripper clamping jaws, the clamping force must be large enough to ensure the clamping reliability, otherwise, the clamping is not firm, and the large clamping force is likely to leave marks on the surface of a product.

In view of the above, there is a need in the art for a clamping device that can apply less force to a product when clamping the product and can achieve reliable clamping.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a handheld spherical clamping device.

In order to achieve the above purpose, the invention adopts the following technical scheme:

hand-held spherical clamping device: the clamping device comprises an operating rod and side clamping jaws, wherein the side clamping jaws comprise at least two outer clamping jaws and at least two inner clamping jaws, a mounting seat is arranged at the end part of the operating rod, and the end parts of the outer clamping jaws and the inner clamping jaws are hinged to the mounting seat;

the outer clamping jaw and the inner clamping jaw are alternately connected;

the inner surface of the outer clamping jaw is provided with a plurality of inner clamping grooves which are distributed circumferentially, the outer surface of the inner clamping jaw is provided with outer clamping grooves which are distributed transversely and circumferentially, and the inner clamping grooves and the outer clamping grooves are alternately connected;

and a side clamping jaw driving device for driving the side clamping jaw to open or close is also arranged in the operating rod and the mounting seat.

Preferably, the hand-held ball gripping device of the preceding description: the clamping device also comprises an end clamping jaw arranged on the side clamping jaw, and the end clamping jaw can slide along the longitudinal circumference of the side clamping jaw;

when the side clamping jaws swing to a preset angle, all the end clamping jaws can form a closed spherical surface;

the end clamping jaw is connected with an end clamping jaw driving device used for driving the end clamping jaw to move.

Preferably, the hand-held ball gripping device of the preceding description: the side clamping jaw driving device comprises a driven gear connected to one end of the side clamping jaw and a rack capable of axially stretching out and drawing back from the mounting seat, the rack is meshed with the driven gear, a threaded rod is arranged at one end of the rack, the threaded rod is connected with a driving nut through threads, and the driving nut is rotatably connected to the control rod.

Preferably, the hand-held ball gripping device of the preceding description: an outer clamping jaw reinforcing rib is arranged at the center of the outer clamping jaw, and one end of the outer clamping jaw reinforcing rib is connected with a driven gear;

an inner clamping jaw reinforcing rib is arranged at the center of the inner clamping jaw, one end of the inner clamping jaw reinforcing rib is connected with another driven gear, and all the driven gears are meshed with the rack.

Preferably, the hand-held ball gripping device of the preceding description: the end part clamping jaw driving device comprises driving strips and sliding sleeves, one ends of the driving strips are hinged to the end part clamping jaws, the other ends of all the driving strips are connected to the sliding sleeves, and the sliding sleeves can axially slide along the operating rod.

Preferably, the hand-held ball gripping device of the preceding description: the sliding sleeve is connected with the driving nut through a threaded sleeve, one end of the threaded sleeve is rotatably connected to the sliding sleeve through an inner convex ring, and the other end of the threaded sleeve is connected with the driving nut through threads.

Preferably, the hand-held ball gripping device of the preceding description: the lateral part of control rod passes through the uide bushing and connects the drive strip, and the slip cover is equipped with the guide strip that extends to between the uide bushing.

Preferably, the hand-held ball gripping device of the preceding description: the mount pad is equipped with the mounting groove of a plurality of equidistance circumference distributions, and the both ends of driven gear center pin are connected respectively in two adjacent mounting grooves.

Preferably, the hand-held ball gripping device of the preceding description: the end clamping jaw is provided with a guide arm, and the side clamping jaw is connected with the guide arm through a sliding seat.

Preferably, the hand-held ball gripping device of the preceding description: one side of the end part clamping jaw is also provided with an inner flange positioned on the inner surface of the end part clamping jaw.

The invention achieves the following beneficial effects:

compared with the prior art, the clamping jaw has the greatest difference that the product is contained in the clamping jaw through a relatively closed cavity, the product is not transported in a short distance by means of clamping force in the prior art, and the product is only under the action of gravity in the clamping jaw, so that the product cannot be deformed or the surface quality cannot be damaged due to the clamping force.

The side clamping jaw driving device and the end clamping jaw driving device can synchronously move or independently move, so that the flexibility and the changeability of the use process are ensured.

Drawings

FIG. 1 is an overall architecture diagram of the present invention;

FIG. 2 is an internal structural view of the outer jaw, inner jaw and mount of the present invention;

FIG. 3 is a cross-sectional view of the junction of the outer jaw and the inner jaw of the present invention;

FIG. 4 is a view of the mounting base, driven gear, rack structure of the present invention;

FIG. 5 is a view of the connection between the end jaw and the outer jaw of the present invention;

FIG. 6 is a cross-sectional view of the tail of the joystick of the present invention;

the meaning of the reference numerals: 1-a joystick; 2-mounting a base; 3-external clamping jaw; 4-inner jaw; 5-end jaws; 6-a sliding seat; 7-a driven gear; 8-driving the nut; 9-a sliding sleeve; 10-a thread bushing; 11-a guide sleeve; 12-a rack; 13-a threaded rod; 21-mounting grooves; 31-external jaw reinforcing ribs; 32-inner card slot; 41-internal clamping claw reinforcing ribs; 42-external card slot; 51-a drive bar; 52-a guide arm; 53-inner flange; 81-convex ring; 91-a guide strip; 101-inner convex ring.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 6: the embodiment discloses a handheld spherical clamping device: including control rod 1 and side clamping jaw, the side clamping jaw includes two at least outer clamping jaws 3, two at least interior clamping jaws 4, and the tip of control rod 1 is equipped with mount pad 2, and the tip of outer clamping jaw 3, the tip of interior clamping jaw 4 all articulate in mount pad 2.

The present embodiment is described by taking two outer jaws 3 and two inner jaws 4 as an example, and the two outer jaws 3 and the two inner jaws 4 are alternately connected.

The inner surface of the outer clamping jaw 3 is provided with a plurality of inner clamping grooves 32 distributed circumferentially, the outer surface of the inner clamping jaw 4 is provided with outer clamping grooves 42 distributed transversely and circumferentially, and when the adjacent outer clamping jaw 3 and the inner clamping jaw 4 are matched, the inner clamping grooves 32 and the outer clamping grooves 42 are alternately connected.

And a side clamping jaw driving device for driving the side clamping jaw to open or close is further arranged in the operating rod 1 and the mounting seat 2.

The embodiment further comprises end jaws 5 mounted to the side jaws, the end jaws 5 being slidable along the longitudinal circumference of the side jaws. Because the circumferential direction that the side clamping jaw was located has two, and is horizontal always, and is vertical, can refer to earth's longitude and latitude. The transverse direction and the longitudinal direction of the embodiment are referred to by the operating rod 1, and the transverse circumference refers to the radial direction of the operating rod 1 parallel to the circumferential surface; the longitudinal circumference means that the circumferential surface is parallel to the axial direction of the operating lever 1.

Moreover, when the side clamping jaws (with the mounting base 2 as the center) swing to a preset angle, all the end clamping jaws 5 can form a closed spherical surface, and in order to ensure the sealing performance of the front section of the embodiment, an inner flange 53 on the inner surface of the end clamping jaw 5 is further arranged on one side of the end clamping jaw 5, so that when the four end clamping jaws 5 form the closed spherical surface, the inner flange 53 covers the gap between the adjacent end clamping jaws 5, the sealing effect at the position is prompted, and the leakage at the position is avoided.

The side clamping jaw driving device comprises a driven gear 7 connected to one end of a side clamping jaw and a rack 12 capable of axially stretching out and drawing back from the mounting base 2, the rack 12 is meshed with the driven gear 7, a threaded rod 13 is arranged at one end of the rack 12, the threaded rod 13 is connected with a driving nut 8 through threads, and the driving nut 8 is rotatably connected to the operating rod 1. It should be noted that: the driving nut 8 is only rotatable relative to the operating rod 1, but cannot slide axially between the two, and the specific structure can be seen from fig. 6, wherein an outer convex ring 81 is arranged on the inner surface of the driving nut 8, and an inner hole of the operating rod 1 is provided with an inner annular groove matched with the outer convex ring 81, and the outer convex ring 81 is arranged inside the inner annular groove. Thus, when the driving nut 8 is rotated, the driving nut 8 can drive the rack 12 to slide along the square of the axis of the operating rod 1 in a threaded manner, and then drive the four driven gears 7 to rotate.

Wherein, mount pad 2 is equipped with a plurality of equidistance circumference distribution's mounting groove 21, and the both ends of driven gear 7 center pin are connected respectively in two adjacent mounting grooves 21, and wherein the fixed mode between driven gear 7 center pin and the mounting groove 21 can adopt any one among the prior art, but need guarantee that driven gear 7 center pin is fixed in the bottom of mounting groove 21.

Further, an outer clamping jaw reinforcing rib 31 is arranged at the center of the outer clamping jaw 3, and one end of the outer clamping jaw reinforcing rib 31 is connected with the driven gear 7; the center of the inner clamping jaw 4 is provided with an inner clamping jaw reinforcing rib 41. One end of the internal clamping claw reinforcing rib 41 is connected with another driven gear 7, and all the driven gears 7 are meshed with the racks 12. Thus, when the driven gear 7 rotates, the corresponding side clamping jaw can be driven to swing. It should be noted that: in the process that the side clamping jaw swings with the mounting base 2 as the axis, the side clamping jaw swings with a certain central axis instead of moving horizontally, so a certain gap (position D in fig. 3) needs to be formed between the inner clamping groove 32 and the outer clamping groove 42 in the circumferential direction, otherwise clamping stagnation occurs, and the side clamping jaw cannot be normally opened or closed. Furthermore, certain lubricating oil is preferably arranged in the inner clamping groove 32 and the outer clamping groove 42, so that the damping of operation is reduced, and clamping stagnation is avoided.

The specific structure that the end part clamping jaw 5 can slide along the longitudinal circumference of the side clamping jaw is as follows: the end clamping jaw 5 is provided with a guide arm 52, the outer surface of the side clamping jaw is provided with a sliding seat 6, and the two ends of the sliding seat 6 are provided with sliding grooves matched with the guide arm 52, the sliding grooves are connected with the guide arm 52, so that the sliding track of the end clamping jaw 5 is an arc line.

The end jaws 5 are connected to an end jaw drive for driving the movement of the end jaws 5. The end jaw drive comprises a drive bar 51 and a sliding sleeve 9. One end of the driving bar 5 is hinged to the end clamping jaw 5, and the other end of all the driving bars 51 is connected to the sliding sleeve 9, and the sliding sleeve 9 can slide axially along the operating rod 1. The side of the operating rod 1 is connected with the driving rod 51 through the guide sleeve 11, the number of the guide sleeves 11 of the same driving rod 51 can be multiple, the driving rod 51 preferably has certain elasticity, and in practical application, a stainless steel rod with certain toughness and strength is preferably adopted.

On the other hand: due to the fixed connection between the sliding sleeve 9 and the driver blade 5, the sliding sleeve 9 cannot rotate relative to the operating lever 1, for which reason the sliding sleeve 9 is provided with guide blades 91 extending between the guide sleeves 11.

In order to synchronously adjust the side clamping jaw and the end clamping jaw 5, the sliding sleeve 9 and the driving nut 8 are connected through the threaded sleeve 10, one end of the threaded sleeve 10 is rotatably connected to the sliding sleeve 9 through the inner convex ring 101, and the function of the inner convex ring 101 can be referred to the outer convex ring 81, namely, only the relative rotation between the threaded sleeve 10 and the sliding sleeve 9 can be ensured, but the two can not move axially. The other end of the threaded sleeve 10 is connected with the driving nut 8 through threads.

When the device is used, an operator holds the operating rod 1 by hand, the end part clamping jaw 5 is in a maximum opening device, the opening state of the side clamping jaw can be adjusted according to the size of a clamped object, and the other parts of the side clamping jaw except for the front section opening are in a closed state (except for certain gaps among the outer clamping jaw 3, the inner clamping jaw 4 and the mounting seat 2, the gaps are far smaller than the size of a product), so that the product can be placed in a hemispherical cavity formed by the side clamping jaw, and in the process, the operator usually operates in a posture that the end part opening formed by the side clamping jaw faces upwards.

When the product completely enters the inside of the side clamping jaw, the driving nut 8 is rotated, the rack 12 is pulled, and therefore the four side clamping jaws can be synchronously closed. In the process of closing the side clamping jaws, the inner clamping groove 32 and the outer clamping groove 42 are mutually inserted to ensure that the side clamping jaws are inwardly contracted; since the driving nut 8 is in threaded connection with the threaded sleeve 10, and the driving nut 8 is also in threaded connection with the threaded rod 13, when the side clamping jaws need to be controlled independently, the driving nut 8 needs to be rotated, the threaded sleeve 10 and the driving nut 8 need to be rotated synchronously, and the axial position between the driving nut 8 and the sliding sleeve 9 is ensured not to be changed. When the side clamping jaw and the end clamping jaw 5 need to be operated simultaneously, the driving nut 8 and the threaded sleeve 10 need to rotate relatively, and in practical application, the threaded sleeve 10 and the sliding sleeve 9 can be simultaneously pinched by fingers to synchronously rotate.

This embodiment includes side clamping jaw and end clamping jaw 5, and when end clamping jaw 5 when contracting for side clamping jaw, can form certain opening at the tip, the inside of product this end opening entering side clamping jaw can be followed to this like this, then operation end clamping jaw 5 can constitute confined cavity, prevents that the product from dropping. Wherein the side clamping jaw comprises an outer clamping jaw 3 and an inner clamping jaw 4 which are relatively inserted and have certain sealing performance. The tip clamping jaw 5 sets up in the outside of side clamping jaw to can carry out certain sealed with the tip of side clamping jaw, just so make the clamping jaw application range of this embodiment wider, but the great big ball of centre gripping volume also can press from both sides in batches simultaneously and get products such as a plurality of steel balls.

In practice, the side jaws are usually adjusted to a relatively small extent in size, and after the end jaws 5 have been sealed, there are a number of gaps between the outer jaws 3, the inner jaws 4 and the end jaws 5, which allow liquid to rapidly enter into or exit from the interior of the jaws. For example, when a red-fired steel or glass ball is heat treated inside, the clamped product can be brought into rapid contact with the liquid when the clamping jaws enter the liquid, and the liquid can flow out rapidly after being taken out of the liquid.

Since the side jaws and the end jaws 5 are slow in movement, the present embodiment is particularly suitable for a small number of gripping operations, and particularly suitable for product testing and development stages. The special clamping device is usually used for short-distance transportation and is not suitable for regular products with large clamping force, and can also be used for fishing products in liquid, for example, steel balls are fished in a box body with lubricating oil, and the special clamping device is not suitable for places with more impurities due to the fact that a plurality of gaps are formed among the outer clamping jaw 3, the inner clamping jaw 4 and the end clamping jaw 5, and is easy to cause clamping stagnation.

Compared with the prior art, the biggest difference of this embodiment is that the product is held through a relatively airtight cavity, and it is not among the prior art to rely on clamping force to transport the product in a short distance, because the product only receives the action of gravity in the inside of clamping jaw, consequently the product can not warp or damage surface quality because of clamping force. But synchronous motion between the side clamping jaw drive arrangement of this embodiment and the tip clamping jaw drive arrangement, also can the independent movement, guaranteed the nimble of use changeable.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (10)

1. Spherical clamping device of hand-held type, its characterized in that: the clamping device comprises an operating rod (1) and side clamping jaws, wherein each side clamping jaw comprises at least two outer clamping jaws (3) and at least two inner clamping jaws (4), a mounting seat (2) is arranged at the end part of the operating rod (1), and the end parts of the outer clamping jaws (3) and the inner clamping jaws (4) are hinged to the mounting seat (2);

the outer clamping jaw (3) and the inner clamping jaw (4) are alternately connected;

a plurality of inner clamping grooves (32) are circumferentially distributed on the inner surface of the outer clamping jaw (3), outer clamping grooves (42) are transversely and circumferentially distributed on the outer surface of the inner clamping jaw (4), and the inner clamping grooves (32) and the outer clamping grooves (42) are alternately connected;

and a side clamping jaw driving device for driving the side clamping jaw to open or close is further arranged in the operating rod (1) and the mounting seat (2).

2. The hand-held spherical gripping device according to claim 1, wherein: the clamping device further comprises an end clamping jaw (5) mounted on the side clamping jaw, and the end clamping jaw (5) can slide along the longitudinal circumference of the side clamping jaw;

when the side clamping jaws swing to a preset angle, all the end clamping jaws (5) can form a closed spherical surface;

the end clamping jaw (5) is connected with an end clamping jaw driving device used for driving the end clamping jaw (5) to move.

3. The hand-held spherical gripping device according to claim 2, wherein: side clamping jaw drive arrangement is including connecting in driven gear (7) of side clamping jaw one end, rack (12) of flexible in mount pad (2) of axial, rack (12) mesh in driven gear (7), the one end of rack (12) is equipped with threaded rod (13), threaded rod (13) are through threaded connection drive nut (8), drive nut (8) rotatable coupling is in control rod (1).

4. A hand-held spherical gripping device according to claim 3, wherein: an outer clamping jaw reinforcing rib (31) is arranged at the center of the outer clamping jaw (3), and one end of the outer clamping jaw reinforcing rib (31) is connected with a driven gear (7);

the center of the inner clamping jaw (4) is provided with an inner clamping jaw reinforcing rib (41), one end of the inner clamping jaw reinforcing rib (41) is connected with another driven gear (7), and all the driven gears (7) are meshed with the rack (12).

5. A hand-held spherical gripping device according to claim 3, wherein: the end clamping jaw driving device comprises a driving strip (51) and a sliding sleeve (9), one end of the driving strip (5) is hinged to the end clamping jaw (5), the other ends of all the driving strips (51) are connected to the sliding sleeve (9), and the sliding sleeve (9) can slide along the axial direction of the operating rod (1).

6. The hand-held ball gripping device of claim 5, wherein: the sliding sleeve (9) is connected with the driving nut (8) through a threaded sleeve (10), one end of the threaded sleeve (10) is rotatably connected to the sliding sleeve (9) through an inner convex ring (101), and the other end of the threaded sleeve is connected with the driving nut (8) through threads.

7. The hand-held ball gripping device of claim 5, wherein: the side part of the operating rod (1) is connected with a driving strip (51) through a guide sleeve (11), and the sliding sleeve (9) is provided with a guide strip (91) extending between the guide sleeves (11).

8. A hand-held spherical gripping device according to claim 3, wherein: the mounting seat (2) is provided with a plurality of mounting grooves (21) which are circumferentially distributed at equal intervals, and two ends of a central shaft of the driven gear (7) are respectively connected to the two adjacent mounting grooves (21).

9. The hand-held spherical gripping device according to claim 2, wherein: the end part clamping jaw (5) is provided with a guide arm (52), and the side clamping jaw is connected with the guide arm (52) through a sliding seat (6).

10. The hand-held spherical gripping device according to claim 2, wherein: and an inner flange (53) positioned on the inner surface of the end part clamping jaw (5) is also arranged on one side of the end part clamping jaw (5).

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