CN217890000U

CN217890000U - Rapid clamping mechanism capable of boosting and compact in structure

Info

Publication number: CN217890000U
Application number: CN202221641806.5U
Authority: CN
Inventors: 李金海; 刘海军; 汪存宝
Original assignee: Hefei Taijin Automation Technology Co ltd
Current assignee: Hefei Taijin Automation Technology Co ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-11-25
Anticipated expiration: 2032-06-28

Abstract

The utility model relates to the technical field of clamping, and discloses a quick clamping mechanism which can be reinforced and has compact structure, comprising a bracket; the telescopic assembly is fixedly arranged on the bracket; the clamping assembly comprises two clamping arms symmetrically arranged at two axial sides of the telescopic assembly, and the clamping arms are hinged on the bracket through a hinge mechanism; the arm lock has the strong point of the centre gripping of keeping away from flexible subassembly and is close to flexible subassembly, part between strong point and the hinge mechanisms is lever power arm, part between centre gripping and the hinge mechanisms is lever resistance arm, the utility model discloses an utilize two inclined planes of supporting shoe to change the flexible rotary motion who changes two arm locks into of flexible subassembly to the size that reduces clamping mechanism that can show, the power arm in the simultaneous control arm lock is longer than resistance arm, utilizes lever principle, makes less thrust that flexible subassembly produced can change great clamping-force into, has realized pressing from both sides tightly to the heavy object, and the practicality is strong.

Description

Rapid clamping mechanism capable of boosting and compact in structure

Technical Field

The utility model relates to a press from both sides tight technical field, specifically be a can reinforcement and compact structure's quick clamping mechanism.

Background

In the engineering machinery industry, some workpieces with heavy weight need to be positioned and clamped by a positioning and clamping mechanism in the welding process, the conventional clamping mechanism is generally provided with two clamping arms, the two clamping arms are generally driven by two air cylinders or hydraulic cylinders, and the two clamping arms are driven to move by the combination of one air cylinder or one hydraulic cylinder matched with a gear rack, so that the workpieces are clamped.

However, the two ways all require that the telescopic direction of the air cylinder or the hydraulic cylinder is parallel to the moving direction of the two clamping arms, which results in that the size of the whole clamping device is relatively large, and when the weight of the workpiece to be clamped is heavy, the air cylinder or the hydraulic cylinder with small size cannot provide enough clamping force, and the situation that the workpiece cannot be clamped easily occurs, so that the air cylinder or the hydraulic cylinder with larger size is required to provide the clamping force meeting the actual requirement for the clamping arms, which further increases the overall size of the clamping device, and some tool structures restrict the overall size of the positioning and clamping mechanism not to be too large, but the clamping force generated by the positioning and clamping mechanism with small size is relatively small, which cannot meet the clamping operation of the workpiece with heavier weight, and brings about not little trouble to the actual production.

SUMMERY OF THE UTILITY MODEL

For solving the too big problem of clamping device volume that the present clamping device who is used for pressing from both sides the heavier work piece of tight weight that proposes in the background art, the utility model provides a following technical scheme: a quick clamping mechanism capable of boosting and having a compact structure comprises:

a support;

the telescopic component is fixedly arranged on the bracket; and

the clamping assembly comprises two clamping arms which are symmetrically arranged at two axial sides of the telescopic assembly, and the clamping arms are hinged on the bracket through a hinge mechanism;

the arm lock has the strong point of keeping away from telescopic component and the strong point that is close to telescopic component, the part between strong point and the hinge mechanisms is lever power arm, the part between strong point and the hinge mechanisms is lever resistance arm, the length of power arm is greater than the length of resistance arm, telescopic component can expand two strong points, makes two strong points be close to gradually.

The two inclined planes through utilizing the supporting shoe change the flexible rotary motion who changes two arm lock of subassembly into to can show reduce clamping mechanism's size, the power arm in the simultaneous control arm lock is longer than the resistance arm, utilizes lever principle, makes the less thrust that the subassembly that stretches out and draws back produced can change into great clamping-force, has realized pressing from both sides tightly to the heavy object, and the practicality is strong.

Preferably, a supporting block is fixedly arranged at the free end of the telescopic component, two inclined planes are arranged at one end, close to the clamping component, of the supporting block, the two inclined planes are symmetrically arranged along the axial direction of the telescopic component, the distance between the two inclined planes is gradually increased along the direction that the supporting block is gradually close to the telescopic component, and the two inclined planes are respectively used for supporting two supporting points.

Preferably, the positions of the supporting points of the clamping arms are rotatably provided with rollers, and the two rollers are respectively in rolling connection with the two inclined planes.

The roller can reduce the friction between the supporting point and the inclined plane and reduce actual abrasion.

Preferably, the telescopic assembly is fixedly connected with the bracket through a mounting substrate, and the telescopic assembly and the clamping arms are respectively positioned at two sides of the mounting substrate.

Preferably, a guide stopper is slidably mounted on a side portion of the support block in a direction perpendicular to an axial direction of the telescopic assembly, and the guide stopper is mounted on the mounting substrate.

The guide limiting block can enable the supporting block to move stably.

Preferably, two all install the extension spring on two sides of resistance arm phase separation, the one end that resistance arm was kept away from to this extension spring is installed on the support.

By utilizing the action of the tension spring, in the process that the supporting block gradually descends, the elastic force of the tension spring can gradually increase the distance between the clamping points of the two clamping arms, so that the two clamping points can be separated without manually shifting the clamping arms

Preferably, the telescopic assembly is a cylinder or a hydraulic cylinder.

Preferably, the hinge mechanism is a pin.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this can reinforcement and compact structure's quick clamping mechanism converts the flexible rotary motion who changes two arm lock of flexible subassembly into through two inclined planes that utilize the supporting shoe to the size that reduces clamping mechanism that can show, the power arm in the simultaneous control arm lock is longer than the resistance arm, utilizes lever principle, makes the less thrust that flexible subassembly produced can convert great clamping-force into, has realized pressing from both sides tightly to the heavy object, and the practicality is strong.

2. This can reinforcement and compact structure's quick clamping mechanism utilizes the effect of extension spring, and at the in-process that the supporting shoe descends gradually, the elasticity of extension spring can make the distance between the centre gripping point of two arm lock grow gradually, need not stir the arm lock manually just so can make two centre gripping points part.

Drawings

Fig. 1 is a schematic structural view of the clamping assembly of the present invention in an open state;

FIG. 2 is a schematic structural view of the clamping assembly of the present invention in a clamping state;

fig. 3 is a schematic structural view of the clamping arm of the present invention.

In the figure: 100. a support; 200. a telescoping assembly; 300. a clamping assembly; 310. clamping arms; 311. a clamping point; 312. a support point; 313. a power arm; 314. a resistance arm; 320. a roller; 400. a hinge mechanism; 500. a support block; 510. a bevel; 600. a mounting substrate; 700. a guide limiting block; 800. a tension spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

As shown in fig. 1 to 3, the quick clamping mechanism of the present embodiment capable of increasing force and having a compact structure includes a mounting substrate 600, a bracket 100, a telescopic assembly 200, and a clamping assembly 300, wherein the bracket 100 and the telescopic assembly 200 are respectively and fixedly connected to the upper and lower sides of the mounting substrate 600, the clamping assembly 300 includes two clamping arms 310, the two clamping arms 310 are symmetrically disposed on two axial sides of the telescopic assembly 200 and are hinged to the bracket 100 through a hinge mechanism 400; the clamping arm 310 has a clamping point 311 far away from the telescopic assembly 200 and a supporting point 312 near the telescopic assembly 200, and the clamping point 311 is a point for clamping a workpiece; on the clamping arm 310, the part between the supporting point 312 and the hinge mechanism 400 is a lever power arm 313, the part between the clamping point 311 and the hinge mechanism 400 is a lever resistance arm 314, and the length of the power arm 313 is greater than that of the resistance arm 314, so that the two supporting points 312 are pushed to open towards two sides by using a small pushing force, and the two clamping points 311 can generate a clamping force greater than the pushing force, namely, the clamping and positioning of a heavy workpiece can be realized by using a small force; the telescopic assembly 200 is able to expand the two support points 312 to gradually approach the two clamping points 311.

A supporting block 500 is mounted on the free end of the telescopic assembly 200, and the supporting block 500 is a key structure capable of driving the two supporting points 312 to gradually separate and expand; one end of the supporting block 500 close to the clamping assembly 300 is provided with two inclined planes 510, the two inclined planes 510 are axially and symmetrically arranged along the telescopic assembly 200, and the distance between the two inclined planes 510 is gradually increased along the direction that the supporting block 500 gradually approaches the telescopic assembly 200; the rollers 320 are rotatably installed at the two supporting points 312, and the two rollers 320 are respectively connected with the two inclined surfaces 510 in a rolling manner, so that the two rollers 320 respectively roll on the two inclined surfaces 510 during the process that the supporting block 500 moves towards the clamping assembly 300, thereby reducing the friction between the supporting points 312 and the inclined surfaces 510.

Guide stoppers 700 are slidably installed at both sides of the support block 500 in a direction perpendicular to the axial direction of the telescopic assembly 200, the guide stoppers 700 are installed on the installation substrate 600, a passage is formed between the two guide stoppers 700, and the support block 500 can stably slide in the passage by the action of the guide stoppers 700.

In order to make the resistance arm 314 of the clamping arm 310 restore to the state shown in fig. 1 after the supporting block 500 descends to the lowest position, the tension spring 800 may be installed on two separated sides of the two resistance arms 314, and one end of the tension spring 800 away from the resistance arm 314 is installed on the bracket 100, so that when the clamping arm 310 is in the clamping state shown in fig. 2, the tension spring 800 may be in the extension state to generate a certain tension, and in the process that the supporting block 500 descends to the lowest position, the distance between the clamping points 311 of the two clamping arms 310 is increased a little by the elastic force of the tension spring 800 every time the supporting block 500 descends, so that it is not necessary to manually toggle the clamping arm 310.

The telescopic assembly 200 may be a cylinder, a hydraulic cylinder, or other telescopic structure; the hinge mechanism 400 is preferably a pin.

In practical use, when a workpiece does not need to be clamped, the whole clamping device is as shown in fig. 1, and the distance between the clamping points 311 of the two clamping arms 310 is in a maximum state; when a workpiece needs to be clamped, the workpiece is firstly moved to a position between two clamping points 311 of two clamping arms 310, then the telescopic assembly 200 is directly started, so that the telescopic assembly 200 drives the supporting block 500 to move towards the clamping assembly 300, at this time, under the action of two inclined planes 510, the supporting points 312 of the clamping arms 310 roll on the inclined planes 510 through the rollers 320, and along with the movement of the supporting block 500, the distance between the two supporting points 312 is gradually increased, and because the clamping arms 310 are hinged to the bracket 100 through the hinge mechanisms 400, the distance between the two clamping points 311 of the clamping arms 310 far away from the supporting points 312 is gradually reduced, so that the workpiece is clamped; because the length of the power arm 313 of the clamping arm 310 is greater than that of the resistance arm 314, according to the lever principle, the pressure generated by the clamping point 311 on the workpiece is greater than the pressure generated by the inclined surface 510 on the roller 320, that is, the thrust generated by the telescopic assembly 200 is enhanced, so that the clamping force of the clamping point 311 on the workpiece is greater than the thrust generated by the telescopic assembly 200, and the purpose of clamping a heavy workpiece by using a small source power is achieved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a can reinforcement and compact structure's quick clamping mechanism which characterized in that includes:

a bracket (100);

the telescopic assembly (200) is fixedly arranged on the bracket; and

the clamping assembly (300) comprises two clamping arms (310) which are symmetrically arranged at two axial sides of the telescopic assembly, and the clamping arms are hinged on the bracket through a hinge mechanism (400);

the clamping arm is provided with a clamping point (311) far away from the telescopic assembly and a supporting point (312) close to the telescopic assembly, the part between the supporting point and the hinge mechanism is a lever power arm (313), the part between the clamping point and the hinge mechanism is a lever resistance arm (314), the length of the power arm is greater than that of the resistance arm, and the telescopic assembly can expand two supporting points to enable the two clamping points to be gradually close to each other.

2. A force amplifying, compact and quick clamping mechanism as claimed in claim 1, wherein: the free end of the telescopic assembly (200) is fixedly provided with a supporting block (500), one end of the supporting block, which is close to the clamping assembly, is provided with two inclined planes (510), the two inclined planes are axially and symmetrically arranged along the telescopic assembly and are gradually close to the telescopic assembly along the supporting block, the distance between the two inclined planes is gradually increased, and the two inclined planes are respectively used for supporting two supporting points (312).

3. A force amplifying, compact and quick clamping mechanism as claimed in claim 2, wherein: and the positions of the supporting points of the clamping arms are rotatably provided with rollers (320), and the two rollers are respectively in rolling connection with the two inclined planes.

4. A force-amplifying, compact quick clamping mechanism as defined in claim 2, wherein: the telescopic assembly is fixedly connected with the bracket through a mounting substrate (600), and the telescopic assembly and the clamping arms are respectively positioned at two sides of the mounting substrate.

5. A power-increasing compact quick clamping mechanism as set forth in claim 4, wherein: a guide stopper (700) is slidably mounted on a side portion of the support block in a direction perpendicular to an axial direction of the telescopic assembly (200), and the guide stopper is mounted on a mounting substrate (600).

6. A force-amplifying, compact quick clamping mechanism as defined in claim 1, wherein: two all install extension spring (800) on resistance arm (314) two sides of phase separation, this extension spring is kept away from the one end of resistance arm and is installed on support (100).

7. A power-increasing compact quick clamping mechanism as claimed in any one of claims 1 to 6, wherein: the telescopic assembly (200) is specifically a cylinder or a hydraulic cylinder.

8. A power-increasing, compact quick clamping mechanism as claimed in any one of claims 1 to 6, wherein: the hinge mechanism (400) is specifically a pin.