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CN-121972896-A - Welding positioner clamp for AGV frame and frame clamping method

CN121972896ACN 121972896 ACN121972896 ACN 121972896ACN-121972896-A

Abstract

The invention relates to the technical field of forklifts and discloses a welding positioner clamp for an AGV frame and a frame clamping method. The clamp comprises a roll-over stand, a sliding rail assembly, a rear sliding table assembly, a front sliding table assembly, a second centering clamping mechanism and a first centering clamping mechanism, wherein the roll-over stand is provided with two longitudinal beams and a mounting flange plate used for connecting an external positioner, the sliding rail assembly is mounted on the longitudinal beams of the roll-over stand, the rear sliding table assembly is slidably mounted on the sliding rail assembly and comprises a first centering clamping mechanism used for centering and clamping the rear part of a frame in the width direction, the front sliding table assembly is arranged at the front end of the roll-over stand and comprises a second centering clamping mechanism used for centering and clamping the front part of the frame in the width direction, the rear sliding table assembly is arranged to be capable of adapting to frames with different lengths through sliding along the sliding rail assembly, and the first centering clamping mechanism and the second centering clamping mechanism are arranged to be capable of mutually matched to be used for adapting to frames with different widths and realizing clamping. The welding device can greatly improve safety, weldability and compatibility and ensure the manufacturing precision of products.

Inventors

  • XU HONGJUN
  • SUN ANZHEN
  • Bai qian

Assignees

  • 安徽合力股份有限公司

Dates

Publication Date
20260505
Application Date
20260306

Claims (10)

  1. 1. Welding positioner anchor clamps of AGV frame, its characterized in that, anchor clamps include: A roll-over stand (1), the roll-over stand (1) having two stringers (12) and a mounting flange plate (11) for connecting an external positioner; The sliding rail assembly (2), the sliding rail assembly (2) is installed on a longitudinal beam (12) of the roll-over stand (1); the rear sliding table assembly (3), the rear sliding table assembly (3) is slidably arranged on the sliding rail assembly (2) and comprises a first centering clamping mechanism for centering and clamping the rear part of the frame (7) in the width direction; The front sliding table assembly (4) is arranged at the front end of the turnover frame (1) and comprises a second centering and clamping mechanism for centering and clamping the front part of the frame (7) in the width direction, wherein, The rear sliding table assembly (3) is arranged to be capable of adapting to frames (7) with different lengths through sliding along the sliding rail assembly (2); The first centering clamping mechanism and the second centering clamping mechanism are arranged to be capable of mutually cooperating to adapt to frames (7) with different widths and achieve clamping.
  2. 2. The welding positioner clamp of an AGV carriage of claim 1 wherein at least one of the first centering clamp mechanism and the second centering clamp mechanism comprises: The large sliding table (31) is arranged on the sliding rail assembly (2) and is connected with the bolt through a pin to realize the integral sliding of the rear sliding table assembly (3); A pair of small slipways (32), wherein each small slipway (32) is provided with a supporting and clamping block (322) for supporting and laterally clamping the frame support leg; the guide rail sliding block assembly is used for guiding the small sliding table (32) to slide along the width direction; The screw transmission assembly comprises a left-handed screw (342), a right-handed screw (3101), and a left-handed screw nut (343) and a right-handed screw nut (3102) which are respectively matched with the left-handed screw (342) and the right-handed screw nut (3102), wherein the left-handed screw nut (343) and the right-handed screw nut (3102) are respectively connected with the two small sliding tables (32); A connecting shaft (35) for connecting the ends of the left-handed screw (342) and the right-handed screw (3101) to achieve synchronous rotation; a hand wheel (39), the hand wheel (39) is connected with the end part of the left-hand screw (342) or the right-hand screw (3101) and is provided with: When the hand wheel (39) is rotated, the left-handed screw (342) and the right-handed screw (3101) are driven to synchronously rotate through the connecting shaft (35), and the two small sliding tables (32) can be driven to move oppositely or back to clamp or loosen the frame (7).
  3. 3. The welding positioner clamp of an AGV carriage according to claim 2, wherein the rear slide assembly (3) further comprises a pair of pressing mechanisms (36), the pressing mechanisms (36) comprising pressing arms (362) rotatably mounted on the small slide (32) and pressing screw assemblies (361) provided on the pressing arms (362) for vertically pressing the carriage legs placed on the support clamping blocks (322).
  4. 4. A welding positioner clamp for an AGV carriage according to claim 3, wherein the small slide table (32) is further provided with a rotation shaft (38) and a pin hole, the pressing arm (362) is sleeved on the rotation shaft (38) and is rotatable around the rotation shaft, and the pin (37) is inserted into the pin hole to lock the working position of the pressing arm (362).
  5. 5. The welding positioner clamp of an AGV carriage according to claim 1, further comprising a front positioning assembly (5), the front positioning assembly (5) being fixedly mounted in front of the roll-over stand (1), comprising: a front support frame (51) for supporting a frame floor (78); A front stopper mount (53) provided on the front support frame (51); And the front stop block (52) is detachably arranged in the front stop block mounting seat (53) and is used for positioning the front end of the frame (7).
  6. 6. The welding positioner clamp of an AGV carriage according to claim 5, further comprising a front hold-down assembly (6), the front hold-down assembly (6) comprising: At least one pair of pressing blocks (61) fixed on the roll-over stand (1) and formed with T-shaped grooves; a T-shaped screw (62), wherein the lower end of the T-shaped screw (62) is arranged in the T-shaped groove; the pressing rod (63) penetrates through the pressing rod (63) and is sleeved at the upper end of the T-shaped screw rod (62); The nut (64) is arranged to be in threaded fit with the T-shaped screw (62), and the compression bar (63) is compressed against a driving mounting plate (77) of the frame (7) by screwing the nut (64).
  7. 7. Welding positioner clamp for AGV carriage according to claim 1, characterized in that the main structure of the roll-over stand (1) is an open frame consisting of two stringers (12) and a cross beam (14) connecting the stringers, both stringers (12) and cross beam (14) being used for connection and carrying.
  8. 8. A method of clamping a vehicle frame using the weld fixture of any of claims 1-7, the method comprising: S1, preparing a clamp: Adjusting the roll-over stand (1) to a horizontal position; according to the length of the frame (7) to be welded, the rear sliding table assembly (3) is moved to a preset position along the sliding rail assembly (2); the front stop block (52) which is selectively matched is arranged on the front positioning assembly (5); operating a hand wheel (39) on the rear sliding table assembly (3) and the front sliding table assembly (4) to enable the small sliding tables (32) to move to two sides to an open state; Releasing the locking of a pressing mechanism (36) on the rear sliding table assembly (3) and rotating the pressing mechanism to open the pressing mechanism; s2, clamping the frame: lifting a frame (7) fixed by spot welding to a clamp, so that left and right support legs of the frame are respectively arranged on supporting clamping blocks (322) of a rear sliding table assembly (3) and a front sliding table assembly (4), a frame bottom plate (78) is arranged on a front supporting frame (51), and the front end of the frame is abutted against a front stop block (52); a hand wheel (39) on the rear slipway assembly (3) and the front slipway assembly (4) is sequentially operated to enable the small slipways (32) to move in opposite directions until the support clamping blocks (322) clamp the outer sides of the left and right supporting legs of the frame; a pressing mechanism (36) of the rear sliding table assembly (3) is operated to press the support leg at the rear part of the frame; a front compression assembly (6) is installed and locked, and a driving installation plate (77) at the front part of the frame is compressed; s3, opening the clamp: after welding is completed, the compression of the compression mechanism (36) of the rear sliding table assembly (3) and the front compression assembly (6) is sequentially released; a hand wheel (39) on the rear slipway assembly (3) and the front slipway assembly (4) is reversely operated, so that each small slipway (32) moves back to loosen the clamping of the frame support legs; And (3) hanging the frame (7) away from the clamp.
  9. 9. The frame clamping method according to claim 8, wherein in S2, when the hand wheel (39) is operated, the left-handed screw (342) and the right-handed screw (3101) are driven to synchronously rotate by the connecting shaft (35), so that the two small sliding tables (32) can synchronously move in a centering manner.
  10. 10. The frame clamping method according to claim 8, wherein operating the pressing mechanism (36) of the rear slide assembly (3) to press includes rotating the pressing arm (362) to the working position, inserting the latch (37) to lock, and then screwing the pressing screw assembly (361) to press the frame leg.

Description

Welding positioner clamp for AGV frame and frame clamping method Technical Field The invention relates to the technical field of forklifts, in particular to a welding positioner clamp for an AGV frame and a frame clamping method. Background The forward AGV fork truck is produced in a customized mode, the frame types are various, and the forward AGV fork truck has the characteristics of multiple varieties and small batch production. At present, the welding of the frame is generally carried out by adopting a simple frame type roll-over stand matched with a clamping mechanism. This prior art has the following significant drawbacks: 1. The safety is poor, the simple clamp lacks reliable positioning, and when the positioner is welded in a non-horizontal posture (such as overturning), the frame has sideslip risk, so that the safety of operators and equipment is endangered. 2. The welding rate is low, the structure of the frame type roll-over stand can shield the welding line at the bottom of the frame, so that partial welding line can not be completed on a position changing machine, and secondary floor repair welding is needed. 3. The compatibility is low, the simple clamp is generally only suitable for a few frames, and for various product models, the clamp needs to be replaced or adjusted frequently, so that the efficiency is low. 4. The precision is poor, when the ground is welded or the secondary repair welding is carried out, the frame needs to turn over, the frame coaming and the bracket are easy to deform under pressure, and the manufacturing precision of the final product is affected. Therefore, there is a need to develop a new welding positioner clamp and a corresponding frame clamping method that can improve safety, weldability, compatibility and ensure manufacturing accuracy. Disclosure of Invention The invention aims to solve the problems of poor welding safety, low weldability, low compatibility and poor precision of a frame by adopting a simple frame type turnover frame matched with a clamping mechanism in the prior art, and provides a welding positioner clamp for an AGV frame and a frame clamping method, which can greatly improve the safety, the weldability and the compatibility and ensure the manufacturing precision of products. In order to achieve the above object, an aspect of the present invention provides a welding positioner clamp for an AGV frame, the clamp comprising: the turnover frame is provided with two longitudinal beams and a mounting flange plate for connecting an external positioner; the sliding rail assembly is arranged on a longitudinal beam of the roll-over stand; The rear sliding table assembly is slidably arranged on the sliding rail assembly and comprises a first centering and clamping mechanism for centering and clamping the rear part of the frame in the width direction; The front sliding table assembly is arranged at the front end of the roll-over stand and comprises a second centering and clamping mechanism for centering and clamping the front part of the frame in the width direction, The rear sliding table assembly is arranged to be capable of adapting to frames with different lengths through sliding along the sliding rail assembly; The first centering clamping mechanism and the second centering clamping mechanism are arranged to be capable of mutually cooperating to adapt to frames with different widths and realize clamping. Preferably, at least one of the first centering gripping mechanism and the second centering gripping mechanism comprises: The large sliding table is arranged on the sliding rail assembly and is connected with the bolt through a pin to realize the integral sliding of the rear sliding table assembly; a pair of small slipways, each small slipway is provided with a supporting and clamping block for supporting and laterally clamping the frame support leg; The guide rail sliding block assembly is used for guiding the small sliding table to slide along the width direction; The screw transmission assembly comprises a left-handed screw, a right-handed screw, a left-handed screw nut and a right-handed screw nut which are respectively matched with the left-handed screw and the right-handed screw, and the left-handed screw nut and the right-handed screw nut are respectively connected with the two small sliding tables; The connecting shaft is used for connecting the ends of the left-handed screw and the right-handed screw so as to realize synchronous rotation; The hand wheel is connected with the end part of the left-handed screw or the right-handed screw and is provided with: When the hand wheel is rotated, the left-handed screw and the right-handed screw are driven to synchronously rotate through the connecting shaft, and the two small sliding tables can be driven to move oppositely or back to clamp or loosen the frame. Preferably, the rear slide assembly further comprises a pair of pressing mechanisms, each pressing mechanism comprises a pressing arm rotatably