CN214024041U

CN214024041U - Resistance welder for automatically rolling plate

Info

Publication number: CN214024041U
Application number: CN202022288500.3U
Authority: CN
Inventors: 陈坚
Original assignee: Jiangmen Yigao Electrical Appliance Co ltd
Current assignee: Jiangmen Yigao Electrical Appliance Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-08-24
Anticipated expiration: 2030-10-14

Abstract

The utility model discloses an automatic roll up resistance welding machine of board, including the frame, the frame is preceding to be provided with rotatable welding wheel, slider and first elevating gear around the welding wheel is connected with, is provided with the columniform down electrode that extends along frame the place ahead below the welding wheel, circular arc press die about the left and right sides of down electrode is provided with respectively, it is connected with horizontal slider respectively to control circular arc press die, the below of down electrode is provided with down circular arc press die, down the press die below is connected with second elevating gear, it can splice into the drum that has weld gap to control circular arc press die and lower circular arc press die. The utility model has the advantages of simple process, accurate workpiece positioning, high production efficiency, good welding quality and the like.

Description

Resistance welder for automatically rolling plate

Technical Field

The utility model relates to a resistance welding machine specifically discloses an automatic resistance welding machine who rolls up board.

Background

Refer to fig. 1. The existing welding process of the cylindrical straight seam workpiece comprises two steps of plate rolling and welding. The plate rolling process curls the plate P into a cylinder, and the reserved part of the plate at the joint of the cylinders is overlapped. The welding process adopts a resistance welding machine which comprises a flat upper electrode 01 and a cylindrical lower electrode 02. During welding, the cylinder P is sleeved into the cylindrical lower welding electrode 02, and an operator fixes the cylinder P by hand to enable the overlapping size of the plates at the joint of the cylinder P to meet the requirement; then starting the air pressure device, pressing the upper electrode 01 at the joint of the cylinders P, and finally electrifying to fuse the overlapped plates at the joint of the cylinders P. The prior art has the following defects: 1. because the plate rolling and the welding are required to be completed on two machines step by step, the process is various, the transfer of workpieces is time-consuming, and the production efficiency is low; 2. because the surface flatness of the overlapped plates at the joint of the cylinders is low, the flat upper electrode cannot be completely attached to the surface of the plate, and cold joint is easily caused; 3. because the overlapping size of the plates at the joint of the positioning cylinders is determined by hands, the positioning size precision is low.

Disclosure of Invention

Therefore, the resistance welding machine for automatically rolling the plate is needed to solve the problems in the prior art, and has the advantages of simple process, high production efficiency, accurate positioning and good welding quality.

For solving the prior art problem, the utility model discloses an automatic resistance welding machine who rolls up board, including the frame, the frame is preceding to be provided with rotatable welding wheel, slider and first elevating gear around the welding wheel is connected with, is provided with the columniform welding electrode down that extends along frame the place ahead below the welding wheel, the left and right sides of welding electrode is provided with respectively controls circular arc press die down, control circular arc press die and be connected with horizontal slider respectively, the below of welding electrode is provided with down circular arc press die down, circular arc press die below is connected with second elevating gear down, control circular arc press die and circular arc press die down and can splice into the drum that has weld gap.

The utility model has the advantages that: the utility model discloses owing to set up on resistance welding machine about the circular arc press die, circular arc press die and columniform electrode that welds down, the three extrudees panel cylindricly and the centre gripping is fixed, accomplish roll board and welding process on resistance welding machine, simple process has, advantages such as production efficiency height and work piece location are accurate, again owing to adopt the welding wheel to carry out the roll resistance welding to drum mating department, the welding wheel is with the work piece point contact, compare in line contact, be difficult for receiving the influence of work piece surface roughness, be difficult for producing the rosin joint, welding quality is better.

Drawings

FIG. 1 is a schematic structural diagram of a conventional resistance welder.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a state diagram at E of fig. 2 at one process step.

Fig. 4 is a state diagram at E in fig. 2 at process step two.

Fig. 5 is a state diagram at E in fig. 2 at process step three.

Fig. 6 is a state diagram at E in fig. 2 at process steps four and five.

Detailed Description

For further understanding of the features and technical means, as well as the specific objects and functions of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. The description herein of relative orientations of front, back, left, right, upper, lower, etc. are merely relative with reference to the position of components as illustrated in the figures and do not represent absolute limitations on the scope of the present invention.

Refer to fig. 2 to 6. The utility model provides an automatic resistance welder who rolls up board, includes frame 1, and frame 1 is preceding to be provided with rotatable welding wheel 2, welding wheel 2 is connected with front and back slider A and first elevating gear B. A cylindrical lower welding electrode 3 extending along the front of the frame 1 is arranged below the welding wheel 2. The left side and the right side of the lower welding electrode 3 are respectively provided with a left arc stamping die and a right arc stamping die 4, and the left arc stamping die and the right arc stamping die 4 are respectively connected with a left sliding device and a right sliding device C. And a lower arc stamping die 5 is arranged below the lower welding electrode 3, and a second lifting device D is connected below the lower arc stamping die 5. The left and right circular arc stamping dies 4 are provided with circular arc working faces 41 which are adaptive to the appearance of a processed workpiece, when the left and right circular arc stamping dies 4 are butted, the two working faces 41 can form an upper half circular arc with a welding gap 40, the lower circular arc stamping die 5 is provided with a semi-circular arc working face 51 which is adaptive to the appearance of the processed workpiece, and therefore the left and right circular arc stamping dies 4 and the lower circular arc stamping die 5 can be spliced into a cylinder with the welding gap 40.

The front-back sliding device A comprises a guide rail A1 and a stepping screw A2 which are fixed on the frame 1 and extend along the front direction of the frame 1, a slide block A3 is arranged on the guide rail A1, and the stepping screw A2 penetrates into the slide block A3. The stepping screw A2 is driven by a stepping motor (not shown) to drive the slide block A3 to slide back and forth. Of course, the slide block a3 may be driven by air pressure, oil pressure, hand or other driving means. The first lifting device B comprises an upper air cylinder B1 connected below the slider A3, a piston rod B2 of an upper air cylinder B1 faces downwards, a mounting part B3 is arranged at the tail end of the piston rod B2, two clamping blocks B4 distributed left and right are arranged on the mounting part B3, and a mounting hole B5 extending in the left and right direction is arranged on the clamping block B4; the welding wheel 2 is provided with rotating shafts 21 at the circular positions of two sides, the two rotating shafts 21 are respectively inserted into the two mounting holes B5, and the welding wheel 2 can rotate around the axis of the mounting hole B5. The left-right sliding device C is a left-right cylinder C1 arranged on the left side and the right side of the lower welding electrode 3, a piston rod C2 of the left-right cylinder can slide left and right, the left-right arc stamping die 4 is respectively arranged on the piston rods C2 of the left-right cylinder, and the arc-shaped working surface 41 faces the lower welding electrode 3. The second lifting device D is a lower cylinder D1 arranged below the lower welding electrode 3, a piston rod D2 of the lower cylinder faces upwards, the lower arc stamping die 5 is installed on a piston rod D2 of the lower cylinder, and an arc-shaped working surface 51 faces towards the lower welding electrode 3. The first lifting device B, the left-right sliding device C and the second lifting device D can also adopt oil pressure, manual operation or other driving devices.

The front surface of the support 1 is also provided with a support platform 11, the lower welding electrode 3 and a left cylinder C1 and a right cylinder C1 are installed on the support platform 11, and the lower arc stamping die 5 is arranged below the support platform 11. And a yielding opening 12 for the lower arc stamping die 5 to pass through is formed in the support table 11 at a position corresponding to the lower arc stamping die 5, and a workpiece positioning convex rib 13 is arranged at a position corresponding to the workpiece around the yielding opening 12. The side of the bracket 1 is provided with a display screen 14 and a control box 15. The display screen 14 is used for displaying the working state of the resistance welding machine, and a control chip and a circuit board are arranged in the control box 15. The movement of the front-back sliding device A, the first lifting device B, the left-right sliding device C and the second lifting device D can be automatically controlled through a control chip.

Refer to fig. 3 to 6. The process steps of the utility model are as follows; 1) the plate P is placed on the support table 11, and the plate P is positioned by the positioning ribs 13. 2) And starting the lower air cylinder D1, pushing the lower arc stamping die 5 to move upwards by the lower air cylinder D1, pushing the plate P to the lower welding electrode 3, and extruding the plate P by the lower arc stamping die 5 and the cylindrical lower welding electrode 3 to form a lower semi-circular arc of the cylinder. 3) And starting the left and right cylinders C1, pushing the left and right circular arc stamping dies 4 to move oppositely by the left and right cylinders, forming an upper half circular arc of a cylinder by the plates P under the extrusion of the left and right circular arc stamping dies 4 and the cylindrical lower welding electrode 3, overlapping the plates at the joint of the cylinder above the lower welding electrode 3, and forming a welding gap 40 at the joint of the cylinder by the left and right circular arc stamping dies. 4) The upper cylinder B1 is activated and the upper cylinder B1 pushes the wheel 2 down against the drum joint. 5) The welding wheel 2 and the lower electrode 3 are electrified, the stepping screw A2 is started, the stepping screw A2 drives the slide block A3 to further drive the welding wheel 2 to move from back to front along the cylinder joint, and overlapped plates at the cylinder joint are fused. 6) After welding, the welding wheel 2, the left and right air cylinders C1 and the lower air cylinder D1 are reset, and the workpiece is taken away.

The utility model discloses owing to set up on resistance welding machine about the circular arc press die, circular arc press die and columniform electrode that welds down, the three extrudees panel cylindricly and the centre gripping is fixed, accomplish roll board and welding process on resistance welding machine, simple process has, advantages such as production efficiency height and work piece location are accurate, again owing to adopt the welding wheel to carry out the roll resistance welding to drum mating department, the welding wheel is with the work piece point contact, compare in line contact, be difficult for receiving the influence of work piece surface roughness, be difficult for producing the rosin joint, welding quality is better.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides an automatic resistance welder who rolls up board which characterized in that: including the frame, the preceding rotatable welding wheel that is provided with of frame, slider and first elevating gear around the welding wheel is connected with, is provided with the columniform welding electrode down that extends along frame the place ahead below the welding wheel, the left and right sides of welding electrode is provided with respectively about the circular arc press die, it is connected with left and right slider respectively to control the circular arc press die, the below of welding electrode is provided with down the circular arc press die down, be connected with second elevating gear below the circular arc press die down, it can splice into the drum that has the weld gap to control circular arc press die and lower circular arc press die.

2. The electric resistance welder for automatic plate rolling according to claim 1, characterized in that: the front and back sliding device comprises a guide rail and a stepping screw rod, the guide rail and the stepping screw rod extend in the front direction of the rack, a sliding block is arranged on the guide rail, the stepping screw rod penetrates into the sliding block, and the stepping screw rod is driven by a stepping motor.

3. The electric resistance welder for automatic plate rolling according to claim 2, characterized in that: the first lifting device comprises an upper air cylinder connected below the sliding block, a piston rod of the upper air cylinder faces downwards, and an installation part is arranged at the tail end of the piston rod.

4. The electric resistance welder for automatic plate rolling according to claim 3, characterized in that: the installation department has two splint of controlling the distribution, be provided with the mounting hole that extends along left right direction on the splint, the welding wheel includes pivot and wheel body, the pivot is installed in the mounting hole, the wheel body can wind the axis of mounting hole rotates.

5. The electric resistance welder for automatic plate rolling according to claim 1, characterized in that: the left-right sliding device is a left-right cylinder arranged on the left side and the right side of the lower welding electrode, piston rods of the left-right cylinder can slide left and right, and the left-right arc stamping die is respectively arranged on the piston rods of the left-right cylinder.

6. The electric resistance welder for automatic plate rolling according to claim 1, characterized in that: the second lifting device is a lower air cylinder arranged below the lower welding electrode, a piston rod of the lower air cylinder faces upwards, and the lower arc stamping die is installed on the piston rod of the lower air cylinder.