CN214264540U

CN214264540U - Novel positioner

Info

Publication number: CN214264540U
Application number: CN202120108260.6U
Authority: CN
Inventors: 邵福明; 王诚杰
Original assignee: Wuxi Xinje Electric Co Ltd
Current assignee: Wuxi Xinje Electric Co Ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-09-24
Anticipated expiration: 2031-01-13

Abstract

The utility model relates to the technical field of welding devices, in particular to a novel welding positioner, which comprises a group of first brackets and second brackets which are symmetrical with each other, wherein the bottoms of the first brackets and the second brackets are respectively and vertically connected with a bottom frame, and the bottom frame is connected with a base through a rotary driving device; the first support and the second support are respectively provided with a first friction wheel assembly and a second friction wheel assembly, and the first friction wheel assembly or the second friction wheel assembly is driven by a first motor. The device is simple in feeding and convenient to operate, overcomes the defect that screws need to be screwed manually in the prior art, is provided with the slewing mechanism, meets the requirement for welding posture change, can realize one-time hoisting, and completes welding of all welding seams.

Description

Novel positioner

Technical Field

The utility model relates to a welding technical field especially relates to a novel positioner.

Background

The existing volute welding equipment mostly adopts a chuck or a fixed clamping mode (namely, parts such as bolts and pressing plates for the volute are fixed on a tooling plate) for welding, as shown in figure 1, the mode is suitable for welding of a small volute, but for large-scale volute equipment, the equipment is heavy and complex in operation, workpieces are inconvenient to feed and potential safety hazards exist, and the improvement of the production efficiency of the large-scale volute is greatly limited.

Therefore, a new improvement to solve the above technical problems is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's problem, provide a novel positioner, adopt hoist and mount friction drive mode, solved the problem of material loading difficulty among the large-scale spiral case welding process, hoist the spiral case to the centre of two supports to hang on 4 friction pulleys, it is rotatory around the air inlet center by the friction pulley drive spiral case, so that outside welding. The device is simple in feeding and convenient to operate, overcomes the defect that screws need to be screwed manually in the prior art, is provided with the slewing mechanism, meets the requirement for welding posture change, can realize one-time hoisting, and completes welding of all welding seams.

The above purpose is realized by the following technical scheme:

a novel welding positioner comprises a group of first supports and second supports which are symmetrical to each other, wherein the bottoms of the first supports and the second supports are respectively and vertically connected with an underframe, and the underframe is connected with a base through a rotary driving device; the first support and the second support are respectively provided with a first friction wheel assembly and a second friction wheel assembly, and the first friction wheel assembly or the second friction wheel assembly is driven by a first motor.

Preferably, a group of mutually symmetrical slide rails is further arranged on the bottom frame, slide blocks are arranged on the slide rails, and the bottoms of the first supports are fixed through the slide blocks respectively.

Preferably, the bottom of the first support is further provided with a screw nut, the screw nut is sleeved on a screw rod horizontally arranged between the two slide rails, and the screw rod is driven by a second motor arranged on the bottom frame.

Preferably, the rotation driving device comprises a slewing bearing arranged on the base and a chassis sleeved outside the slewing bearing and connected with the base, an outer ring gear of the slewing bearing is connected with a third motor arranged on the chassis through a slewing reducer, and the chassis is fixed with a rotation inner ring of the slewing bearing.

Preferably, the first friction wheel assembly is two driven friction wheels arranged on the inner wall of the first support, the second friction wheel assembly is two driving friction wheels arranged on the inner wall of the second support, and the driving friction wheels are connected with the first motor through a meshing mechanism.

Preferably, the meshing mechanism comprises a middle idle wheel arranged in the inner cavity of the second support and two friction transmission gears meshed with the middle idle wheel, the friction transmission gears penetrate through a driving friction wheel shaft penetrating through the second support, and the driving friction wheel is connected to the driving friction wheel shaft; the middle intermediate wheel is connected with the first motor through a speed reducer.

Preferably, an air cylinder is further mounted on the inner wall of the first support or the second support, and a small roller is connected to the end of a piston of the air cylinder.

Advantageous effects

The utility model provides a novel positioner adopts hoist and mount friction drive mode, has solved the problem of large-scale spiral case welding process material loading difficulty, hoists the spiral case to the centre of two supports to hang on 4 friction pulleys, it is rotatory around the air inlet center by friction pulley drive spiral case, so that outside welding. The device is simple in feeding and convenient to operate, overcomes the defect that screws need to be screwed manually in the prior art, is provided with the slewing mechanism, meets the requirement for welding posture change, can realize one-time hoisting, and completes welding of all welding seams.

Drawings

FIG. 1 is a schematic diagram of a conventional scheme;

fig. 2 is a schematic view of a first view angle structure of the novel welding positioner according to the present invention;

fig. 3 is a schematic view of a second view angle structure of the novel welding positioner according to the present invention;

FIG. 4 is a second bracket internal structure diagram of the novel welding positioner of the invention;

fig. 5 is a schematic view of the underframe structure of the novel welding positioner according to the present invention;

fig. 6 is the utility model discloses a novel rotational drive of positioner device schematic diagram.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Conventional volute welding As shown in figure 1, the volute 15 is fixed by a mode that a transmission output shaft 16 penetrates through a central hole of the volute 15 and is connected with a pressure plate 17 through a compression screw 18, so that welding operation can be carried out on the volute 15, and the device is also suitable for welding various devices with concentric air ports and mounting holes.

As shown in fig. 2 and 3, a novel welding positioner comprises a set of first bracket 1 and second bracket 2 which are symmetrical to each other, wherein the first bracket 1 and the second bracket 2 are parallel to each other, and a space for accommodating a volute 15 is formed between the inner walls of the first bracket 1 and the second bracket 2; the bottoms of the first bracket 1 and the second bracket 2 are respectively and vertically connected with an underframe 3, and the underframe 3 is connected with a base 5 through a rotary driving device 4; the first support 1 and the second support 2 are respectively provided with a first friction wheel assembly 6 and a second friction wheel assembly 7, and the first friction wheel assembly 6 or the second friction wheel assembly 7 is driven by a first motor 8.

Under the normal condition, the two sides of the large volute are respectively provided with an air inlet and an impeller mounting hole, the positioner adopts a hoisting mode, two groups of friction wheels are respectively arranged as suspension points by utilizing the air inlets and the impeller mounting holes on the two sides of the volute, the volute 15 is hoisted on the 4 friction wheels under the action of gravity, and the friction wheels are driven by a first motor to rotate clockwise or anticlockwise, so that the purpose of realizing displacement by rotating the volute 15 hoisted on the friction wheels by means of friction force is achieved, and the external welding is facilitated.

As the optimization of this embodiment, a set of mutually symmetrical slide rails 9 is further disposed on the bottom frame 3, a slide block 10 is disposed on the slide rail 9, and the bottom of the first support 1 is fixed by the slide block 10. The bottom of the first support 1 is further provided with a screw nut (not marked in the figure), the screw nut is sleeved on a screw rod 11 which is horizontally arranged between the two slide rails 9, and the screw rod 11 is driven by a second motor 12 arranged on the bottom frame 3.

Specifically, the structure can be used for facilitating the installation of the volute before welding; before feeding, adjusting the distance W between the first support 1 and the second support 2 to be larger than the height dimension H of the volute by about 200mm, then hanging the volute 15 between the two supports, starting the second motor 12, and adjusting the distance W to ensure that the friction wheels of the supports at the two sides of the volute extend into an air inlet or an impeller mounting hole of the volute; because the distance W between the two brackets is adjustable, the structure can adapt to welding of different volute thickness sizes.

In order to further satisfy the requirement of welding gesture, this patent sets up rotary driving device 4, makes work piece (turbine) can revolve around vertical axis 180, rotary driving device 4 including install in slewing bearing 41 of base 5, with the cover locate the slewing bearing 41 the outside and with chassis 42 that base 5 is connected, slewing bearing 41's outer ring gear pass through slewing reducer 43 with set up in the third motor 44 of chassis 3 is connected, chassis 3 with slewing bearing 41's rotatory inner circle is fixed.

Specifically, the chassis 3 is mounted on the base 5 through a pivoting support 41, and the pivoting support 41 has a gear on the outer ring thereof, which is engaged with a pivoting drive gear. The rotary driving gear is arranged on a shaft head of the rotary speed reducer 43, and the rotary speed reducer 43 is provided with a third motor and driven by the third motor; the slewing reducer 43 is fixed to the undercarriage 3. When the third motor 44 rotates, the chassis 3 is driven to rotate around the rotating support 41 by +/-180 degrees, so that the displacement of the workpiece is realized.

As a control method of the friction wheels in this embodiment, the first friction wheel assembly 6 is two driven friction wheels 61 disposed on the inner wall of the first bracket 1, the second friction wheel assembly 7 is two driving friction wheels 71 disposed on the inner wall of the second bracket 2, and the driving friction wheels 71 are connected to the first motor 8 through an engagement mechanism.

Specifically, the meshing mechanism comprises an intermediate gear 72 arranged in the inner cavity of the second support 2 and two friction transmission gears 73 meshed with the intermediate gear 7, the friction transmission gears 73 penetrate through an active friction wheel shaft 74 penetrating through the second support 2, and the active friction wheel 71 is connected to the active friction wheel shaft 74; the intermediate wheel 72 is connected to the first motor 8 through a speed reducer 75. The rotation of the first motor 8 indirectly drives the driving friction wheel shaft 74 to rotate clockwise or anticlockwise, so that the purpose of workpiece displacement is achieved.

In this embodiment, the first frame 1 and the second frame 2 may be provided with a driving friction wheel 71, and driven by a servo motor.

In order to better drive the rotation of the volute casing 15, a cylinder 13 is further installed on the inner wall of the first bracket 1 or the second bracket 2, and a small roller 14 is connected to the piston end of the cylinder 13. After the volute 15 is mounted on the two groups of friction wheels, the control cylinder 13 enables the small roller 14 to abut against the lower inner wall of the through hole of the volute, and the purpose of increasing the friction force between the volute 15 and the friction wheels is achieved, so that the volute 15 is driven to rotate and shift better.

The above description is only for the purpose of illustrating embodiments of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, improvements and the like made by those skilled in the art within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a novel positioner which characterized in that: the device comprises a group of first supports and second supports which are symmetrical to each other, wherein the bottoms of the first supports and the second supports are respectively and vertically connected with an underframe, and the underframe is connected with a base through a rotary driving device; the first support and the second support are respectively provided with a first friction wheel assembly and a second friction wheel assembly, and the first friction wheel assembly or the second friction wheel assembly is driven by a first motor.

2. The novel welding positioner of claim 1, wherein: the bottom frame is further provided with a group of mutually symmetrical slide rails, slide blocks are arranged on the slide rails, and the bottom of the first support is fixed through the slide blocks respectively.

3. The novel welding positioner of claim 2, wherein: the bottom of the first support is further provided with a screw rod nut, the screw rod nut is sleeved on a screw rod which is horizontally arranged between the two slide rails, and the screw rod is driven by a second motor arranged on the bottom frame.

4. The novel welding positioner of claim 1, wherein: the rotary driving device comprises a rotary support arranged on the base and a chassis sleeved outside the rotary support and connected with the base, an outer ring gear of the rotary support is connected with a third motor arranged on the chassis through a rotary speed reducer, and the chassis is fixed with a rotary inner ring of the rotary support.

5. The novel welding positioner of claim 1, wherein: the first friction wheel assembly is two driven friction wheels arranged on the inner wall of the first support, the second friction wheel assembly is two driving friction wheels arranged on the inner wall of the second support, and the driving friction wheels are connected with the first motor through a meshing mechanism.

6. The novel welding positioner of claim 5, wherein: the meshing mechanism comprises a middle idle wheel arranged in the inner cavity of the second support and two friction transmission gears meshed with the middle idle wheel, the friction transmission gears penetrate through a driving friction wheel shaft penetrating through the second support, and the driving friction wheel is connected to the driving friction wheel shaft; the middle intermediate wheel is connected with the first motor through a speed reducer.

7. The novel welding positioner of claim 1, wherein: and the inner wall of the first support or the second support is also provided with a cylinder, and the end part of a piston of the cylinder is connected with a small roller.