CN218964499U

CN218964499U - Novel butt welding machine clamp

Info

Publication number: CN218964499U
Application number: CN202223174500.6U
Authority: CN
Inventors: 曹湘锋
Original assignee: Hunan Xinyue Power Equipment Co ltd
Current assignee: Hunan Xinyue Power Equipment Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-05-05
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses a novel butt welding machine clamp in the technical field of steel pipe butt welding machines, which comprises a mounting table, an upper clamp and a lower clamp, wherein the front side of the mounting table is provided with a groove, the lower surface of the groove is fixedly provided with the lower clamp, the front surface and the rear surface of the lower clamp are fixedly provided with bosses, the bosses are provided with longitudinal sliding grooves, clamping blocks are slidably arranged in the longitudinal sliding grooves, clamping screw rods are rotatably arranged in the longitudinal sliding grooves, the front clamping block and the rear clamping block are in threaded connection with the clamping screw rods, the clamping screw rods are driven by a driving assembly, the upper clamp is arranged above the groove, and the top of the mounting table is provided with an oil cylinder for pressing the upper clamp.

Description

Novel butt welding machine clamp

Technical Field

The utility model relates to the technical field of steel pipe butt welding machines, in particular to a novel butt welding machine clamp.

Background

Butt welding machines are also known as electric current welders or resistance butt welders. The contact surfaces of two metals which are butted with each other are instantaneously heated to be melted and fused by utilizing the resistance between the contact surfaces of the two workpieces and instantaneously passing through low voltage and high current;

when a workpiece is welded by a traditional butt welding machine, the workpiece is clamped by the clamps on the left side and the right side and then welded, the clamps comprise clamping clamps which are distributed up and down and centering clamps which are distributed front and back, firstly, a worker places the workpiece between the centering clamps, and the workpiece is clamped by the upper clamp and the lower clamp after the left-right spacing is adjusted.

The traditional centering fixture is manually adjusted to the front and rear positions by a worker, but in the welding process, the workpiece is heated and expanded, so that the workpiece is clamped between the front and rear centering fixtures due to expansion after the machining is finished, the worker is very labor-consuming when taking the workpiece, and the workpiece is inconvenient to loosen frequently.

Based on the above, the utility model designs a novel butt welding machine clamp to solve the problems.

Disclosure of Invention

The utility model aims to provide a novel butt welding machine clamp, which solves the problems of the prior art in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the novel butt welding machine clamp comprises a mounting table, an upper clamp and a lower clamp, wherein the front side of the mounting table is provided with a groove, the lower surface of the groove is fixedly provided with the lower clamp, the front surface and the rear surface of the lower clamp are fixedly provided with bosses, the bosses are provided with longitudinal sliding grooves, clamping blocks are slidably arranged in the longitudinal sliding grooves, clamping screw rods are rotatably arranged in the longitudinal sliding grooves, the front clamping block and the rear clamping block are in threaded connection with the clamping screw rods, the clamping screw rods are driven by a driving assembly, the upper clamp is arranged above the groove, and an oil cylinder for pressing the upper clamp is arranged at the top of the mounting table;

as a further scheme of the utility model, the driving assembly comprises a gear, a rack and a pressing rod, the rear end of the clamping screw rod is fixedly provided with the gear, the rear side of the lower surface of the groove is provided with a vertical groove, the rack is vertically and slidably arranged in the vertical groove, the rack is meshed with the gear, and the rear surface of the upper clamp is fixedly provided with the pressing rod for pressing down the rack;

as a further scheme of the utility model, a compression spring is fixedly arranged at the rear side of the lower surface of the lower pressure rod, and a contact block which is contacted with the rack is fixedly arranged at the lower end of the compression spring;

as a further scheme of the utility model, a limiting rod is fixedly arranged on the upper surface of the contact block, a limiting groove is formed in the rear end of the lower pressure rod, and the limiting rod is vertically and slidably arranged in the limiting groove;

as a further scheme of the utility model, a reset spring for resetting the rack is fixedly arranged on the lower surface of the vertical groove;

as a further scheme of the utility model, the screw threads of the clamping screw rod from the middle to the front end and the rear end are opposite in rotation direction.

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

the device is characterized in that the pressing rod is arranged at the rear side of the upper clamp, then the contact block is arranged on the lower surface of the pressing rod through the compression spring, the gear is arranged at the rear end of the clamping screw rod used for driving the front and rear clamping blocks to act, the rack meshed with the gear is vertically arranged at the same time, the upper clamp is used for descending and clamping a workpiece, the contact block is contacted with the upper surface of the rack, then the rack is pressed downwards, the clamping screw rod is driven to rotate by descending, then the front and rear clamping blocks clamp the workpiece, the return spring below the rack is compressed, the compressed return spring pushes the rack to ascend and reset when the upper clamp ascends after the workpiece is processed, the clamping screw rod is driven to reversely rotate in the process of ascending and resetting of the rack, so that the front and rear clamping blocks are separated and loose the workpiece, the workpiece is not clamped between the front and rear positioning clamps because of thermal expansion, and a worker is more convenient to take the workpiece, and meanwhile, the clamping blocks can adapt to workpieces with different front and rear widths in a certain range through the connection of the compression spring.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic elevational view of the general structure of the present utility model;

FIG. 2 is a right side view of the mounting table of the present utility model;

FIG. 3 is a schematic right-side view of a sectional structure of a mounting table according to the present utility model;

FIG. 4 is a schematic rear view of a sectional structure of a mounting table according to the present utility model;

fig. 5 is a schematic cross-sectional view of a lower clamp according to the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

the device comprises a 1-mounting table, a 2-upper clamp, a 3-lower clamp, a 4-groove, a 5-boss, a 6-longitudinal chute, a 7-clamping block, an 8-clamping screw rod, a 9-oil cylinder, a 10-gear, a 11-rack, a 12-lower compression rod, a 13-vertical groove, a 14-compression spring, a 15-contact block, a 16-limiting rod and a 17-return spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: the novel butt welding machine clamp comprises a mounting table 1, an upper clamp 2 and a lower clamp 3, wherein a groove 4 is formed in the front side of the mounting table 1, the lower clamp 3 is fixedly arranged on the lower surface of the groove 4, a boss 5 is fixedly arranged on the front surface and the rear surface of the lower clamp 3, a longitudinal sliding groove 6 is formed in the boss 5, clamping blocks 7 are slidably arranged in the longitudinal sliding groove 6, a clamping screw rod 8 is rotatably arranged in the longitudinal sliding groove 6, the front clamping block 7 and the rear clamping block 7 are in threaded connection with the clamping screw rod 8, the clamping screw rod 8 is driven by a driving assembly, the upper clamp 2 is arranged above the groove 4, and an oil cylinder 9 for pressing the upper clamp 2 is arranged at the top of the mounting table 1;

when the welding fixture is used, firstly, a worker transversely places two workpieces to be welded on the left lower clamp 3 and the right lower clamp 3 respectively, the workpieces are positioned between the front clamping block 7 and the rear clamping block 7, then the oil cylinder 9 drives the upper clamp 2 to descend, the driving assembly drives the clamping screw 8 to rotate in the descending process of the upper clamp 2, the front clamping block 7 and the rear clamping block 7 are driven to move towards the middle simultaneously through the rotation of the clamping screw 8, the middle workpieces can be clamped and centered through the front clamping block 7 and the rear clamping block 7, the upper clamp 2 can be in contact with the upper surfaces of the workpieces, the workpieces can be further clamped through the upper clamp 2 and the lower clamp 3, the welding work can be started, the upper clamp 2 can be lifted upwards after the welding, the upper clamp 2 can be driven to rotate again in the ascending process, but the rotating direction of the clamping screw 8 is opposite to that of the front clamping screw 8, the front clamping block 7 and the rear clamping block 7 are mutually separated, the workpieces clamped front and the rear clamping block 7 can be loosened, then the workpieces can be easily taken up by the worker, the workpieces can be clamped in the middle, and the workpieces can be more conveniently taken down by the worker under the condition of being heated.

As a further scheme of the utility model, the driving assembly comprises a gear 10, a rack 11 and a pressing rod 12, the rear end of the clamping screw rod 8 is fixedly provided with the gear 10, the rear side of the lower surface of the groove 4 is provided with a vertical groove 13, the rack 11 is vertically and slidably arranged in the vertical groove 13, the rack 11 is meshed with the gear 10, and the rear surface of the upper clamp 2 is fixedly provided with the pressing rod 12 for pressing the rack 11;

when the upper clamp 2 is pressed down by the oil cylinder 9 in working, the lower pressing rod 12 at the rear side of the upper clamp 2 is contacted with the upper surface of the rack 11, then the rack 11 is pressed down, the clamping screw rod 8 can be driven to rotate through the descending of the rack 11, the effect that the front clamping block 7 and the rear clamping block 7 are close to each other when the upper clamp 2 descends is achieved, and the workpiece can be centered through the front clamping block 7 and the rear clamping block 7 when the upper clamp 2 is pressed down.

As a further scheme of the utility model, a compression spring 14 is fixedly arranged at the rear side of the lower surface of the lower pressure rod 12, a contact block 15 which is contacted with the rack 11 is fixedly arranged at the lower end of the compression spring 14, a limit rod 16 is fixedly arranged on the upper surface of the contact block 15, a limit groove is formed at the rear end of the lower pressure rod 12, and the limit rod 16 is vertically and slidably arranged in the limit groove;

during working, when workpieces with different front and back widths are processed, the positions of the front clamping block 7 and the rear clamping block 7 are different, so that the rear end of the lower surface of the lower pressing rod 12 is provided with the contact block 15 through the compression spring 14, the lower pressing rod 12 is firstly contacted with the rack 11 through the contact block 15 when the lower pressing rod 12 descends, after the clamping block 7 clamps the workpieces, the clamping screw rod 8 cannot continue to rotate, the rack 11 cannot continue to descend, the contact block 15 cannot continue to descend the lower pressing rod 12 or can continue to descend, at the moment, the compression spring 14 is compressed, the larger the compression amplitude of the spring is, the larger the clamping force of the clamping block 7 to the workpieces is, the workpieces with different specifications can be adapted in a certain range under the condition that adjustment is not needed, and because the front and rear clamping blocks 7 only play a role of centering before the upper clamp 2 and the lower clamp 3 clamp the workpieces, the elastic clamping of the workpieces is carried out through the elasticity of the spring, the stability of the workpieces cannot be influenced in the processing process, the limit rod 16 at the upper end of the contact block 15 is matched with the limit hole formed by the lower pressing rod 12 in a sliding mode, and the limit hole of the upper end of the contact block 15 can only prevent the contact block 15 from being displaced upwards relative to the lower pressing rod 12.

As a further scheme of the utility model, a reset spring 17 for resetting the rack 11 is fixedly arranged on the lower surface of the vertical groove 13;

in operation, when the rack 11 descends, the return spring 17 will be compressed until the upper clamp 2 is lifted, and the compressed return spring 17 will drive the rack 11 to return.

As a further scheme of the utility model, the screw threads of the clamping screw rod 8 from the middle to the front end and the rear end are opposite in rotation direction;

in operation, the front and rear clamping blocks 7 need to be moved in opposite directions when the clamping screw 8 is rotated.

Claims

1. The utility model provides a novel butt welding machine anchor clamps, includes mount table (1), goes up anchor clamps (2) and lower anchor clamps (3), its characterized in that: the front side of mount table (1) is seted up flutedly (4), the lower surface fixed mounting of recess (4) has lower anchor clamps (3), lower anchor clamps (3) front surface and rear surface are all fixed mounting have boss (5), vertical spout (6) have been seted up to boss (5), install clamping piece (7) in vertical spout (6) sliding, still rotate in vertical spout (6) and install clamping screw (8), two clamping piece (7) all with clamping screw (8) threaded connection around, clamping screw (8) are driven through drive assembly, go up anchor clamps (2) and install in the top of recess (4) to hydro-cylinder (9) that are used for pressing down anchor clamps (2) are installed at the top of mount table (1).

2. The novel butt welding machine fixture according to claim 1, wherein: the driving assembly comprises a gear (10), a rack (11) and a pressing rod (12), the gear (10) is fixedly arranged at the rear end of the clamping screw rod (8), a vertical groove (13) is formed in the rear side of the lower surface of the groove (4), the rack (11) is vertically and slidably arranged in the vertical groove (13), the rack (11) is meshed with the gear (10), and the pressing rod (12) for pressing the rack (11) is fixedly arranged on the rear surface of the upper clamp (2).

3. The novel butt welding machine fixture according to claim 2, wherein: the rear side of the lower surface of the lower pressure rod (12) is fixedly provided with a compression spring (14), and the lower end of the compression spring (14) is fixedly provided with a contact block (15) which is contacted with the rack (11).

4. A novel butt welding machine fixture according to claim 3, wherein: the upper surface of the contact block (15) is fixedly provided with a limiting rod (16), the rear end of the lower pressure rod (12) is provided with a limiting groove, and the limiting rod (16) is vertically and slidably arranged in the limiting groove.

5. The novel butt welding machine fixture according to claim 4, wherein: and a reset spring (17) for resetting the rack (11) is fixedly arranged on the lower surface of the vertical groove (13).

6. The novel butt welding machine fixture according to claim 5, wherein: the screw threads of the clamping screw rods (8) are opposite in rotation direction from the middle to the front end and the rear end.