Displacement welding tool for inner portal of through-type forklift

Abstract

The utility model discloses a deflection welding tool for an inner portal of a through-type forklift. An inner portal conveying mechanism is an unpowered roller line, and a fixed guide wheel is arranged on one side of the inner portal conveying mechanism; the rotating mechanism is of a head-tail supporting two-section type and drives the inner portal frame conveying mechanism to rotate forwards and backwards by 360 degrees. The inner portal positioning and clamping mechanisms are installed on a frame of the inner portal conveying mechanism, the multiple inner portal positioning and clamping mechanisms are arranged in the inner portal conveying direction, and each inner portal positioning and clamping mechanism is provided with a movable guide wheel, a double-acting clamping device and a rotary clamping air cylinder. The guiding function in the conveying process of the inner gantries of different sizes and the clamping function in the overturning and welding process are achieved. The inner portal frame clamping device achieves automatic clamping of the inner portal frame with the height and the width within a certain range, is in butt joint with an automatic production line and is high in universality. The side direction of the door frame does not bear external force, certain welding deformation can be limited, and the welding quality is improved. Welding operation of the inner portal in different position angle states is achieved, production efficiency is improved, and labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of welding tooling for inner door frames of forklifts, in particular to a position-changing welding tooling for inner door frames of pass-through forklifts. Background Art

[0002] The inner mast of a forklift is the main load-bearing component of the forklift's picking device, and the quality of its welding directly affects the performance of the forklift.

[0003] However, in the current inner mast assembly process, some welding positions are not convenient for welding operations in a horizontal state, and although the width of the inner mast is not much different, the height is affected by the specifications of the forklift and has many types. The labor intensity of switching tooling is high, and because the size of the inner mast is large, it is not convenient to move and position and clamp. It is difficult to control welding deformation during the welding process, resulting in low production efficiency and high production costs. Utility Model Content

[0004] The utility model aims to make up for the defects of poor compatibility, difficult welding deformation control and high labor intensity of the internal door frame welding of the prior art forklift, and provides a displacement welding tool for the internal door frame of a pass-through forklift.

[0005] The utility model is realized by the following technical solutions:

[0006] A displacement welding tool for an inner door frame of a forklift, comprising:

[0007] The inner gantry conveying mechanism is a non-powered roller conveyor line, including a frame, on which a plurality of non-powered rollers are installed at equal intervals, the front end of which is connected to the inner gantry loading roller conveyor line, and a plurality of fixed guide wheels are arranged at intervals on one side of the frame, which play a guiding role when the inner gantry is manually dragged to move;

[0008] The rotating mechanism includes a head section and a tail section, and a plurality of unpowered rollers are respectively installed on the top of the head section and the tail section, and a variable frequency motor is installed inside the head section, which is connected to the front end of the frame and drives the inner gantry conveying mechanism to rotate 360° forward and reversely. A support frame is installed inside the tail section, and the support frame is rotatably connected to the tail end of the frame to play an auxiliary supporting role. Both sections have unpowered rollers and can be connected with upstream and downstream automation equipment. The rotating mechanism can control the stop position angle of the rotation of the inner gantry conveying mechanism to facilitate the welding operation of the inner gantry.

[0009] The inner gantry positioning and clamping mechanism is installed on the frame of the inner gantry conveying mechanism, and multiple groups are arranged along the inner gantry conveying direction to realize the guiding function during the conveying process of inner gantry of different lengths and the clamping function during the flipping and welding process.

[0010] The inner door frame positioning and clamping mechanism includes a side support plate, two mounting plates are connected in parallel and spaced apart between the two top ends of the side support plates, a guide groove is provided on the top surface of one end of the two mounting plates, a mounting seat that can slide along the guide groove is installed on the guide groove, a movable guide wheel is installed on the mounting seat, the movable guide wheel is located on the inner side of the channel steel on one side of the inner door frame of the forklift, a linear guide rail is installed on the bottom plate of the side support plate, a slider is slidably installed on the linear guide rail, a two-way synchronous cylinder is fixedly installed on the slider, an inner clamp and an outer clamp are respectively installed at both ends of the two-way synchronous cylinder, the inner clamp and the outer clamp extend from the gap between the two mounting plates to above the mounting plates, and the inner clamp and the outer clamp are respectively located on the inner side and outer side of the channel steel on the other side of the inner door frame of the forklift.

[0011] The inner door frame positioning and clamping mechanism can realize automatic clamping of the inner door frame to prevent the inner door frame from sliding when turning over and can limit a certain welding deformation.

[0012] A locking handle is installed on the mounting seat. The position of the movable guide wheel is adjustable and lockable, and can be adapted to different widths of the inner door frame channel steel. The movable guide wheel does not exert external force on the inner door frame, but only plays a guiding and anti-slipping role.

[0013] Rotating clamping cylinders are respectively installed on both ends of the installation plate.

[0014] A guide rail clamp is installed on the linear guide rail; and a limit spring is installed on the slide block.

[0015] The advantages of the utility model are: the utility model can realize automatic clamping of the inner door frame with height and width dimensions within a certain range, can be connected to the automated production line, has strong versatility, the lateral side of the inner door frame does not bear external force, can limit certain welding deformation, improve welding quality, and at the same time can realize welding operations of the inner door frame in different position and angle states, thereby improving production efficiency and reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a displacement welding tool for an inner door frame of a pass-through forklift according to the utility model;

[0017] Figure 2 This is a front view of a displacement welding tool for an inner door frame of a pass-through forklift according to the utility model;

[0018] Figure 3 This is a front view of an inner door frame positioning and clamping mechanism of a displacement welding tool for an inner door frame of a pass-through forklift according to the utility model;

[0019] Figure 4 It is a schematic diagram of the front end direction of the inner mast positioning clamping mechanism of the displacement welding tooling of the inner mast of a pass-through forklift according to the utility model;

[0020] Figure 5 It is a schematic diagram of the rear end direction of the inner mast positioning clamping mechanism of the displacement welding tooling of the inner mast of a pass-through forklift according to the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of a movable guide wheel of a displacement welding tooling of an inner door frame of a pass-through forklift according to the utility model;

[0022] Figure 7 The utility model is a structural schematic diagram of a double-acting clamping device of a displacement welding tooling of an inner door frame of a pass-through forklift. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is described in detail below through embodiments. The following technical solution is merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, but cannot be construed as a limitation on the technical solution of the present invention.

[0024] like Figures 1 to 7 As shown, the utility model provides a displacement welding tool for an inner door frame of a pass-through forklift, comprising an inner door frame conveying mechanism 1, a rotating mechanism 2, and an inner door frame positioning and clamping mechanism 3.

[0025] The inner gantry conveying mechanism 1 is an unpowered roller conveyor line, which is composed of a frame 11 and an unpowered roller 12. It is connected to the inner gantry loading roller conveyor line at the front end, and a fixed guide wheel 13 is provided on one side for guiding when the inner gantry 4 is manually pulled to move on the inner gantry conveying mechanism 1.

[0026] The rotating mechanism 2 is a head-tail support type, which is divided into two sections. The head section 21 is designed with a variable frequency motor to drive the inner gantry conveying mechanism to achieve 360° forward and reverse rotation. The tail section 22 is provided with a support frame inside, which is rotatably connected with the frame 11 to achieve the support and rotation function of the inner gantry conveying mechanism 1. The rotating mechanism 2 can control the stop position angle of the inner gantry conveying mechanism 1 to facilitate the welding operation of the inner gantry 4. At the same time, both sections have unpowered rollers, which can be connected with upstream and downstream automation equipment.

[0027] The inner gantry positioning and clamping mechanism 3 is installed on the frame 11 of the inner gantry conveying mechanism 1, and multiple groups are arranged along the inner gantry conveying direction, which is used to realize the guiding function during the conveying process of the inner gantry 4 of different lengths and widths, and the clamping function during the flipping and welding process. The inner gantry positioning and clamping mechanism 3 includes a movable guide wheel 31, which is designed to be position-adjustable and can be locked using a locking handle 32, and can adapt to different channel steel widths of the inner gantry 4. The movable guide wheel 31 will not apply external force to the inner gantry 4, and only plays a guiding and anti-slipping role.

[0028] The inner door frame positioning clamping mechanism 3 also includes a double-acting clamping device. The double-acting clamping device is composed of an outer clamping hand 331, an inner clamping hand 332, a bidirectional synchronous cylinder 333, a limit spring 334, a linear guide rail 335 and a slider 336, and a guide rail clamp 337. It can automatically clamp the inner door frame 4 to prevent the inner door frame 4 from sliding when flipping, and can limit a certain welding deformation. The limit spring 334 is used to limit the initial position of the double-acting clamping device, and its function is to ensure that the channel steels of the inner door frames 4 of different widths are all located between the outer clamping hand 331 and the inner clamping hand 332.

[0029] The double-acting clamping device includes a side support plate 338, two mounting plates 339 are connected in parallel and spaced apart between the two top ends of the side support plate 338, a guide groove is provided on the top surface of one end of the two mounting plates 339, a mounting seat 3310 that can slide along the guide groove is slidably mounted on the guide groove, a movable guide wheel 31 is mounted on the mounting seat 3310, and the movable guide wheel 31 is located on the inner side of the channel steel on one side of the inner mast 4 of the forklift, and a movable guide wheel 31 is mounted on the bottom plate of the side support plate 338. A linear guide rail 335 is slidably mounted on a slider 336, a bidirectional synchronous cylinder 333 is fixedly mounted on the slider 336, an inner gripper 332 and an outer gripper 331 are mounted at both ends of the bidirectional synchronous cylinder 333, the inner gripper 332 and the outer gripper 331 extend from the gap between the two mounting plates 339 to above the mounting plates 339, and the inner gripper 332 and the outer gripper 331 are respectively located on the inner side and the outer side of the channel steel on the other side of the inner mast 4 of the forklift.

[0030] A locking handle 32 is mounted on the mounting seat 3310. A rotating clamping cylinder 34 is mounted on both ends of the mounting plate 339.

[0031] A guide rail clamp 337 is installed on the linear guide rail 335 ; a limit spring 334 is installed on the slider 336 , and the other end of the limit spring 334 is fixed to the bottom plate of the side support plate 338 .

[0032] During the clamping process, the position of the double-acting clamping device on the linear guide rail 335 is movable, and the bidirectional synchronous cylinder 333 drives the outer clamping hand 331 and the inner clamping hand 332 to move simultaneously. When one side of the clamping hand touches the portal frame channel steel, according to the transmission and interaction of force, the clamping force drives the double-acting clamping device as a whole to move toward the side of the blocked clamping hand until the outer clamping hand 331 and the inner clamping hand 332 are clamped on the portal frame channel steel at the same time, and the double-acting clamping device stops moving. At this time, the guide rail clamp 337 is activated to lock the position of the double-acting clamping device on the linear guide rail 335 to achieve the clamping of the inner portal frame 4. The inner portal frame positioning clamping mechanism 3 does not apply external force to the inner portal frame 4 in the process of automatic clamping of the inner portal frame 4, and both sides of the portal frame channel steel after clamping have limit mechanisms, which have a certain limiting effect on welding deformation.

[0033] The inner mast positioning and clamping mechanism 3 further comprises a rotary clamping cylinder 34 , which rotates downward to press the upper part of the inner mast 4 after the inner mast 4 is clamped by the double-acting clamping device.

[0034] The specific operation process of this embodiment is as follows:

[0035] 1. When the displacement welding tooling needs a workpiece, the button is manually operated, and the inner door frame 4 moves forward along the roller conveyor line connected to the displacement welding tooling. After entering the displacement welding tooling, under manual pulling, the inner door frame 4 continues to move to a suitable position under the guidance of the fixed guide wheel 13.

[0036] 2. After the movable guide wheel 31 is manually pushed to contact the inner side of the inner mast channel steel, the movable guide wheel 31 is locked by the locking handle 32. The movable guide wheel 31 only serves to guide and prevent slipping, and will not exert external force on the mast. At this time, the inner mast channel steel is located between the outer clamping hand 331 and the inner clamping hand 332.

[0037] 3. After pressing the clamping button, the bidirectional synchronous cylinder 333 drives the outer clamp 331 and the inner clamp 332 to move simultaneously. When one side of the clamp hits the portal frame channel steel, according to the transmission and interaction of force, the clamping force drives the double-acting clamping device as a whole to move toward the blocked side until the outer clamp 331 and the inner clamp 332 are clamped on the portal frame channel steel at the same time, and the double-acting clamping device stops moving. At this time, the guide rail clamp 337 is activated to lock the position of the double-acting clamping device on the linear guide rail 335.

[0038] 4. After the inner mast 4 is clamped by the double-acting clamping device, the rotating clamping cylinder 34 is rotated downward to press the upper part of the inner mast 4.

[0039] 5. Start the rotating mechanism 2 to realize the overall rotation of the inner door frame conveying mechanism 1, the inner door frame positioning and clamping mechanism 3 and the inner door frame 4 to a certain angle, and complete the positioning and clamping process of the inner door frame 4 before the welding operation.

[0040] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A displacement welding tool for the inner mast of a forklift, characterized in that: Included are: The inner gantry conveying mechanism comprises a frame, on which a plurality of unpowered rollers are equidistantly mounted, and a plurality of fixed guide wheels are spaced apart on one side of the frame; The rotating mechanism includes a head section and a tail section, a plurality of unpowered rollers are respectively installed on the top of the head section and the tail section, a variable frequency motor is installed inside the head section, the variable frequency motor is connected to the front end of the frame, the variable frequency motor drives the inner door frame conveying mechanism to rotate 360° forward and reverse, and a support frame is installed inside the tail section, the support frame is rotatably connected to the tail end of the frame; The inner door frame positioning and clamping mechanism is installed on the frame of the inner door frame conveying mechanism, and multiple groups are arranged along the inner door frame conveying direction.

2. The displacement welding tool for the inner mast of a forklift according to claim 1 is characterized in that: The inner door frame positioning and clamping mechanism includes a side support plate, two mounting plates are connected in parallel and spaced apart between the two top ends of the side support plates, a guide groove is provided on the top surface of one end of the two mounting plates, a mounting seat that can slide along the guide groove is installed on the guide groove, a movable guide wheel is installed on the mounting seat, the movable guide wheel is located on the inner side of the channel steel on one side of the inner door frame of the forklift, a linear guide rail is installed on the bottom plate of the side support plate, a slider is slidably installed on the linear guide rail, a two-way synchronous cylinder is fixedly installed on the slider, an inner clamp and an outer clamp are respectively installed at both ends of the two-way synchronous cylinder, the inner clamp and the outer clamp extend from the gap between the two mounting plates to above the mounting plates, and the inner clamp and the outer clamp are respectively located on the inner side and outer side of the channel steel on the other side of the inner door frame of the forklift.

3. The displacement welding tool for the inner mast of a forklift according to claim 2 is characterized in that: A locking handle is installed on the mounting seat.

4. The displacement welding tool for the inner mast of a forklift according to claim 2, characterized in that: Rotating clamping cylinders are respectively installed on both ends of the installation plate.

5. The displacement welding tool for the inner mast of a forklift according to claim 2, characterized in that: A guide rail clamp is installed on the linear guide rail; and a limit spring is installed on the slide block.

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