CN-121798287-B - Profile steel synchronous clamping mechanism and overturning positioning device

CN121798287BCN 121798287 BCN121798287 BCN 121798287BCN-121798287-B

Abstract

The invention discloses a section steel synchronous clamping mechanism and a turnover positioning device, and relates to the technical field of section steel welding. The profile steel synchronous clamping mechanism comprises a clamping base, two clamping action parts are arranged on the clamping base in a sliding manner, a transmission screw is rotatably arranged on the clamping base, two screw transmission sections with opposite spiral directions are arranged on the transmission screw, transmission wire sleeves which are respectively in spiral fit with the two screw transmission sections are respectively arranged on each clamping action part, a sliding connection structure is arranged between each transmission wire sleeve and the corresponding clamping action part, an approaching action structure and a separating action structure are respectively and fixedly arranged on each clamping action part at the approaching action end and the separating action end corresponding to the transmission wire sleeve, an elastic action part is arranged between each transmission wire sleeve and the approaching action structure, and the transmission screw is connected with a clamping driver. The invention reduces the occurrence of workpiece clamping injury, and has stable and reliable clamping.

Inventors

ZHANG ZHAORUI
LI YANQIANG
ZHANG ZHAOMIN
WANG YUANYUAN
LIU XINYUE
YAN LIHUA

Assignees

智迈德股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260311

Claims (7)

1. The profile steel synchronous clamping mechanism comprises a clamping base, wherein two clamping action pieces are relatively and slidably arranged on the clamping base, and is characterized in that a transmission screw is rotatably arranged on the clamping base, two screw transmission sections with opposite spiral directions are arranged on the transmission screw, each clamping action piece is respectively provided with a transmission screw sleeve in spiral fit with the two screw transmission sections, a sliding connection structure is arranged between each transmission screw sleeve and the corresponding clamping action piece, an approaching action structure and a separating action structure are respectively and fixedly arranged on the clamping action piece at the approaching action end and the separating action end corresponding to the transmission screw sleeve, and an elastic action piece is arranged between the transmission screw sleeve and the approaching action structure; the sliding connection structure comprises a spline housing fixedly arranged on the clamping action piece, an inner spline is arranged on the spline housing, an outer spline matched with the inner spline is arranged on the outer peripheral surface of the transmission screw housing, a sleeve cover is fixedly arranged on the clamping action piece and positioned at one side of the spline housing far away from the action approaching structure, the sleeve cover is used for abutting against the action far end of the transmission screw housing, the sleeve cover forms the action far away structure, at least two cover body fixing bolts which are circumferentially arranged are arranged between the sleeve cover and the clamping action piece, the cover body fixing bolts penetrate through the spline housing and are in threaded connection with the clamping action piece, bolt through holes corresponding to the cover body fixing bolts are formed in the spline housing, and the bolt through holes are arc-shaped long holes along the circumferential direction of the transmission screw housing.
2. The synchronous clamping mechanism for steel sections as set forth in claim 1, wherein said spring action member is precompressed between said drive wire sleeve and said proximity action structure.
3. The synchronous clamping mechanism for steel sections as set forth in claim 1, wherein said elastic acting member comprises a plurality of belleville springs positioned between said drive wire sleeve and said close acting structure.
4. The synchronous clamping mechanism of section steel of claim 3, wherein an action guide sleeve is sleeved outside the action end of the transmission wire sleeve, an action inner step for abutting the action end of the transmission wire sleeve is arranged on the inner wall of the action guide sleeve, the belleville spring is sleeved outside the action guide sleeve, and an action outer step for pressing the belleville spring is arranged on the outer wall of the action guide sleeve.
5. The synchronous clamping mechanism of the profile steel of claim 1, wherein the transmission screw comprises an intermediate connecting sleeve rotatably mounted on the clamping base and positioned between the two screw transmission sections, the intermediate connecting sleeve is fixedly connected with the proximal ends of the two screw transmission sections respectively, and the power end of the clamping driver is in power connection with the intermediate connecting sleeve.
6. The turnover positioning device comprises a turnover conveying seat rotatably arranged on a frame, a conveying guide mechanism and a turnover driver are arranged between the turnover conveying seat and the frame, a clamping feeding seat is movably arranged on the turnover conveying seat along the direction close to or far away from the section steel, and a feeding driver is arranged between the clamping feeding seat and the turnover conveying seat.
7. The turnover positioning device of claim 6, wherein the holding feeding seat is provided with a supporting roller for supporting the section steel, the holding feeding seat is provided with a plurality of supporting wheel sets at one side of the supporting roller far away from the section steel, and the supporting wheel sets are sequentially arranged along the axial direction of the supporting roller and are used for supporting the supporting roller.

Description

Profile steel synchronous clamping mechanism and overturning positioning device Technical Field The invention relates to the technical field of steel welding, in particular to a steel synchronous clamping mechanism and a turnover positioning device. Background The working procedures of the steel sections, such as H-shaped steel, U-shaped steel, rectangular steel and the like, such as accessory welding in the processing process, need to use a position changing machine to turn and position so as to realize automatic operation in cooperation with welding equipment and the like. Specifically, the input section steel is clamped by using a turnover positioning device in the positioner, then the input section steel is turned over by a designated angle, the section steel is clamped and fixed by taking over the turnover positioning device after turning over, and the turnover positioning device returns, so that the accessory welding operation can be performed; after the accessories are welded in the next posture, the section steel is clamped again by the overturning and positioning device, the clamping and fixing of the replacing and fixing device is released, the section steel is overturned to the next required angle by the overturning and positioning device, the clamping and fixing of the replacing and fixing device is replaced again, the welding operation of the accessories in the next posture is carried out, after all the accessories are welded, the section steel is overturned to the designated posture by the overturning and positioning device, and then the section steel is output. The clamping mechanism used in the overturning and positioning device is realized in a chain pulling mode as shown in the invention patent with the bulletin number of CN114871649B, when the chain is driven to run, the running directions of the uplink section and the downlink section are opposite, and the corresponding clamping bodies are driven to move in opposite directions or in opposite directions so as to complete clamping or releasing clamping actions. In addition, part of the clamping mechanism is realized in a lead screw transmission mode with a positive and negative lead screw, and when the lead screw is driven to rotate, the two clamping bodies can be driven to move in opposite directions or in opposite directions by the lead screw transmission in opposite directions, so that clamping or clamping releasing actions are completed. However, no matter what structural form is adopted, after the section steel is finally clamped, rigid clamping is formed on the section steel, and under the condition of being clamped by a larger driving force, the clamping body can generate a more obvious indentation on the surface of the section steel, namely the problem of workpiece clamping damage occurs. In order to alleviate this problem, the means mainly considered at present is to control the clamping force, but the clamping force is difficult to grasp due to the influences of profile dimension errors of the section steel and the precision of clamping driving and transmission parts, the small errors may cause the clamping body to be close to the surface of the section steel from close to the section steel, the original strong clamping force becomes weak clamping force, if the section steel is overturned under the weak clamping force, axial movement and other conditions of the section steel can occur, and further the welding precision of accessories is influenced, and therefore, the manual participation in the work of position correction and the like after the section steel is displaced is needed in the process, so that the defects of low overall efficiency, many safety problems and the like are caused. For this purpose, further improvements in the profile steel clamping means are required. Disclosure of Invention The invention aims to solve the technical problem of providing a profile steel synchronous clamping mechanism and a turnover positioning device which can reduce the occurrence of workpiece clamping damage and realize stable and reliable clamping. The technical scheme includes that the profile steel synchronous clamping mechanism comprises a clamping base, two clamping action pieces are arranged on the clamping base in a sliding mode, a transmission screw is rotatably arranged on the clamping base, two screw transmission sections with opposite spiral directions are arranged on the transmission screw, transmission wire sleeves which are respectively in spiral fit with the two screw transmission sections are respectively arranged on the clamping action pieces, a sliding connection structure is arranged between each transmission wire sleeve and the corresponding clamping action piece, a close action structure and a far action structure are respectively and fixedly arranged on the clamping action piece at a close action end and a far action end corresponding to the transmission wire sleeve, an elastic action piece is arranged between each t