CN213257953U

CN213257953U - Office chair frame welding jig

Info

Publication number: CN213257953U
Application number: CN202022317788.2U
Authority: CN
Inventors: 朱程远
Original assignee: Anji Dongcheng Kart Manufacturer Co ltd
Current assignee: Anji Dongcheng Kart Manufacturer Co ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-05-25
Anticipated expiration: 2030-10-16

Abstract

The utility model provides an office chair frame welding jig, including the workstation with fix the stabilizer blade in the workstation bottom, the symmetry is fixed with two support columns on the workstation, is fixed with movable support arm respectively on two support columns, and movable support arm other end is fixed with high adjusting device, and the high adjusting device other end is fixed with angle adjusting device, and the angle adjusting device other end is fixed with clamping device, and clamping device is used for clamping office chair frame; the movable support arm comprises a first support arm hinged on the support column, the other end of the first support arm is hinged with a second support arm, and the other end of the second support arm is hinged with a steering column. The utility model discloses in, distance between two welding work pieces is adjusted to work piece accessible movable support arm, adjusts the location angle of two work pieces through high adjusting device and angle adjusting device, and convenient operation is swift.

Description

Office chair frame welding jig

Technical Field

The utility model relates to a welded anchor clamps technical field especially relates to an office chair frame welding jig.

Background

Welding, also known as fusion, welding, is a manufacturing process and technique for joining metals or other thermoplastic materials, such as plastics, in a heated, high temperature or high pressure manner. The welding fixture is a technological device which accurately positions and reliably clamps the weldment, facilitates the assembly and welding of the weldment and ensures the structural precision requirement of the weldment. Welding jig among the prior art is mostly planar structure's platform clamp, and office chair frame is mostly spatial structure, so in office chair frame's welding production process, need the workman to spend a large amount of time positioning workpiece, the workman welds the back well in the frame, needs manual reposition of redundant personnel clamping after with the frame reversal, causes workman's operating load big, and production efficiency hangs down.

SUMMERY OF THE UTILITY MODEL

The utility model provides an office chair frame welding jig, in order to solve the welding jig among the prior art in the use, need the workman to spend a large amount of time positioning workpiece, the workman welds the back in the one side in the frame, needs manual repositioning clamping after reversing the frame, causes workman's operational load big, and the problem that production efficiency is low.

The utility model discloses a realize through following technical scheme:

a welding fixture for office chair frames comprises a workbench and support legs fixed at the bottom of the workbench, wherein two support columns are symmetrically fixed on the workbench, movable support arms are respectively fixed on the two support columns, a height adjusting device is fixed at the other end of each movable support arm, an angle adjusting device is fixed at the other end of each height adjusting device, a clamping device is fixed at the other end of each angle adjusting device, and the clamping devices are used for clamping office chair frames; the movable support arm comprises a first support arm hinged on the support column, the other end of the first support arm is hinged with a second support arm, and the other end of the second support arm is hinged with a steering column.

Compared with the prior art, the utility model discloses can obtain including following technological effect:

1. the distance between the two welding workpieces can be adjusted by the movable support arm, and the positioning angles of the two workpieces are adjusted by the height adjusting device and the angle adjusting device, so that the operation is convenient and rapid;

2. the welding workpiece is suspended and fixed through the clamping device, and workers can weld all parts of the welding workpiece conveniently.

Drawings

Fig. 1 is an overall perspective view of an embodiment of the present invention;

fig. 2 is a schematic partial sectional view of an angle adjusting device according to an embodiment of the present invention;

fig. 3 is a partially enlarged schematic view of a portion a in fig. 1 according to an embodiment of the present invention.

The reference numbers are as follows:

1. a work table; 2. a support leg; 3. a universal roller; 4. a support pillar; 5. a movable support arm; 51. a first support arm; 52. a second support arm; 53. a steering column; 6. an electric push rod; 7. an angle adjusting device; 71. a rotating seat; 72. blind holes; 73. a slider; 74. a spring; 75. positioning pins; 76. carrying out top thread; 77. a ball head; 78. a positioning groove; 79. positioning a rod; 8. a clamping device; 81. a side plate; 82. pressing a plate; 83. a bolt; 9. and a control module.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, an office chair frame welding fixture comprises a workbench 1 and support legs 2 fixed at the bottom of the workbench 1, wherein two support columns 4 are symmetrically fixed on the workbench 1, movable support arms 5 are respectively fixed on the two support columns 4, a height adjusting device is fixed at the other end of each movable support arm 5, an angle adjusting device 7 is fixed at the other end of each height adjusting device, a clamping device 8 is fixed at the other end of each angle adjusting device 7, and the clamping devices 8 are used for clamping office chair frames; the movable support arm 5 comprises a first support arm 51 hinged on the support column 4, the other end of the first support arm 51 is hinged with a second support arm 52, and the other end of the second support arm 52 is hinged with a steering column 53. Firstly, the welding workpiece is respectively clamped in the two clamping devices 8, then the welding workpiece is positioned at a proper position through the adjustment of the movable support arm 5, the height adjusting device and the angle adjusting device 7, and finally welding is carried out. The hinges with locking functions are selected for the hinged parts in the embodiment, and after the angle adjustment of the movable support arm 5 is completed, the rotation of the hinges can be limited through the locking functions of the hinges, so that the effect of fixing the movable support arm 5 is achieved. The hinge with the locking function is the prior art, and is widely applied to various universal rotating arms, and the specific structure of the hinge is not described again.

As shown in fig. 1, the height adjusting device includes an electric push rod 6, and a control end of the electric push rod 6 is fixed to an end of the steering column 53 away from the second arm 52. The electric push rod 6 is selected from an electric push rod with a calibration voltage of 12V DC, a load of 1500N and a mechanical brake, so that the load-carrying performance of the electric push rod 6 is fully ensured.

As shown in fig. 1, a control module 9 is arranged on the worktable 1, a control end of the electric push rod 6 is in communication connection with the control module 9, and the control module 9 controls the electric push rod 6 to ascend and descend. The control module 9 is provided with four buttons which respectively correspond to the lifting of the push rod ends of the two electric push rods 6. The control module 9 is a conventional module, and is mainly used for converting an input signal into an output signal after processing, and transmitting the output signal to the execution mechanism, and the specific structure thereof is not described herein again. The lifting of the push rod end of the electric push rod 6 can drive the welding workpiece to move in the vertical direction, and workers can conveniently position the welding workpiece.

As shown in fig. 1 and 2, the angle adjusting device 7 includes a rotating seat 71 vertically fixed on the top of the push rod end of the electric push rod 6, a horizontal blind hole 72 is arranged in the rotating seat 71, a spring 74 is fixed at the bottom of the closed end of the blind hole 72, and a sliding slider 73 is fixed at the other end of the spring 74; the outlet end of the blind hole 72 is provided with a spherical cavity, a rotating ball head 77 is arranged in the spherical cavity, the other end of the ball head 77 is fixedly connected with a positioning rod 79, and the positioning rod 79 extends out of the blind hole 72. The ball head 77 rotates in the blind hole 72, the positioning rod 79 can perform two motions under the action of the ball head 77, the first motion is 360-degree rotation taking the horizontal radial axis of the positioning rod 79 as a rotating shaft, and the second motion is orbital motion taking the ball head 77 as an original point in a certain range. The contact end of the slider 73 and the ball head 77 is in the shape of a circular arc matched with the shape of the ball head 77. The slider 73 is pressed on the ball head 77 under the action of the elastic force of the spring 74, the pressing force is small, and the rotation damping provided for the ball head 77 is also small. The utility model discloses during empty load, the rotation damping that slider 73 provided is balanced with locating lever 79, the gravity that clamping device 8 got up mutually, and bulb 77 does not take place to rotate when guaranteeing that locating lever 79 does not receive external force, and when the workman gave locating lever 79 a power, destroys this balance promptly, can artifically carry out angle modulation to locating lever 79 to the angle of follow-up butt welding work piece is fixed a position.

As shown in fig. 1 and 2, a jack screw 76 is disposed at the closed end of the blind hole 72, the jack screw 76 is sleeved in the spring 74, one end of the jack screw 76 is supported on the slider 73, and the other end of the jack screw extends out of the blind hole 72. The jackscrew 76 is screwed down, so that the jackscrew 76 is jacked at one end, far away from the ball head 77, of the sliding block 73, the sliding block 73 is tightly attached to the ball head 77, the rotation damping of the ball head 77 is increased, the rotation of the ball head 77 is limited, and the effect of fixing the position of the positioning rod 79 is finally achieved.

As shown in fig. 1 and 2, a horizontal positioning groove 78 is formed in the ball head 77, through holes matched with the positioning groove 78 are formed in the closed end of the blind hole 72 and the middle of the sliding block 73, a sliding positioning pin 75 is arranged in each through hole, one end of the positioning pin 75 is arranged outside the blind hole 72, and the other end of the positioning pin 75 sequentially passes through the through hole in the rotating seat 71, the inside of the spring 74 and the through hole in the sliding block 73 to be clamped with the positioning groove 78. The positioning pin 75 can be clamped in the positioning groove 78, so that the positioning rod 79 can be kept at a horizontal position, and the positioning of a welding workpiece is facilitated.

As shown in fig. 1, 2 and 3, the clamping device 8 includes a side plate 81, a pressing plate 82 and a bolt 83, wherein the side plate 81 and the pressing plate 82 each include an arc-shaped section and straight line sections arranged at two sides of the arc-shaped section; the convex end of the arc-shaped section of the side plate 81 is fixed on one end of the positioning rod 79 away from the rotating seat 71; the pressing plate 82 and the side plate 81 are symmetrically arranged, and straight line sections corresponding to the pressing plate 82 and the side plate 81 are respectively connected through bolts 83. A circular iron pipe for welding the office chair frame can be inserted between the side plate 81 and the pressure plate 82, and then the bolt 83 is screwed to fix the circular iron pipe; alternatively, one end of the semi-finished office chair frame may be placed between the arcuate sections of the side plates 81, then the pressure plate 82 may be snapped in and the bolts 83 may be tightened to secure it. The arc-shaped sections are arranged on the side plates 81 and the pressure plate 82, so that the circular iron pipe welded with the office chair frame can be fixed more stably.

As shown in FIG. 1, the middle part of the worktable 1 is a hollow structure. Hollow out construction can be better hold longer welding part, makes welding part's partly can stretch out to 1 lower part of workstation through fretwork department.

As shown in fig. 1, universal rollers 3 are arranged at the bottom of the support legs 2. Universal gyro wheel 3 can make the utility model discloses be convenient for carry and remove, improve its practicality.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The office chair frame welding fixture comprises a workbench (1) and support legs (2) fixed at the bottom of the workbench (1), and is characterized in that two support columns (4) are symmetrically fixed on the workbench (1), movable support arms (5) are respectively fixed on the two support columns (4), a height adjusting device is fixed at the other end of each movable support arm (5), an angle adjusting device (7) is fixed at the other end of each height adjusting device, a clamping device (8) is fixed at the other end of each angle adjusting device (7), and the clamping devices (8) are used for clamping office chair frames; the movable support arm (5) comprises a first support arm (51) hinged to the support column (4), the other end of the first support arm (51) is hinged to a second support arm (52), and the other end of the second support arm (52) is hinged to a steering column (53).

2. An office chair frame welding jig according to claim 1, characterized in that the height adjustment means comprises an electric push rod (6), and the control end of the electric push rod (6) is fixed at the end of the steering column (53) remote from the second arm (52).

3. The welding fixture for office chair frames as claimed in claim 2, wherein a control module (9) is arranged on the workbench (1), the control end of the electric push rod (6) is in communication connection with the control module (9), and the control module (9) controls the electric push rod (6) to ascend and descend.

4. The office chair frame welding clamp as claimed in claim 2, wherein the angle adjusting device (7) comprises a rotating seat (71) vertically fixed at the top of the push rod end of the electric push rod (6), a horizontal blind hole (72) is formed in the rotating seat (71), a spring (74) is fixed at the bottom of the closed end of the blind hole (72), and a sliding block (73) is fixed at the other end of the spring (74); the ball-shaped blind hole (72) is characterized in that a spherical cavity is formed in the outlet end of the blind hole (72), a rotating ball head (77) is arranged in the spherical cavity, a positioning rod (79) is fixedly connected to the other end of the ball head (77), and the positioning rod (79) extends out of the blind hole (72).

5. The office chair frame welding fixture as claimed in claim 4, characterized in that a jackscrew (76) is arranged at the closed end of the blind hole (72), the jackscrew (76) is sleeved in the spring (74), one end of the jackscrew (76) is propped against the sliding block (73), and the other end of the jackscrew extends out of the blind hole (72).

6. The office chair frame welding clamp as claimed in claim 4, wherein a horizontal positioning groove (78) is formed in the ball head (77), through holes matched with the positioning groove (78) in position are formed in the closed end of the blind hole (72) and the middle of the sliding block (73), a sliding positioning pin (75) is arranged in each through hole, one end of each positioning pin (75) is located outside the blind hole (72), and the other end of each positioning pin (75) sequentially passes through the through hole in the rotating seat (71), the inside of the spring (74) and the through hole in the sliding block (73) to be clamped with the positioning groove (78).

7. The office chair frame welding clamp as claimed in claim 4, wherein the clamping device (8) comprises a side plate (81), a pressing plate (82) and a bolt (83), the side plate (81) and the pressing plate (82) both comprise an arc-shaped section and straight line sections arranged on two sides of the arc-shaped section; the protruding end of the arc-shaped section of the side plate (81) is fixed on one end, away from the rotating seat (71), of the positioning rod (79); the pressing plate (82) and the side plate (81) are symmetrically arranged, and the pressing plate (82) and the corresponding straight line sections of the side plate (81) are connected through bolts (83) respectively.

8. The office chair frame welding fixture as claimed in claim 1, characterized in that the middle of the workbench (1) is hollow.

9. An office chair frame welding jig according to claim 1, characterized in that the universal roller (3) is provided at the bottom of the supporting leg (2).