WO2022205568A1

WO2022205568A1 - Gas cylinder seam weld roller structure

Info

Publication number: WO2022205568A1
Application number: PCT/CN2021/092969
Authority: WO
Inventors: 孙国成; 孙锦刚; 斯阳波; 王亚男
Original assignee: 浙江金象科技有限公司
Priority date: 2021-03-28
Filing date: 2021-05-11
Publication date: 2022-10-06
Also published as: CN113042857A; CN113042857B

Abstract

A gas cylinder seam weld roller structure, which comprises a main shaft (1) and a roller base (2) arranged at an outer side of the main shaft (1), the main shaft (1) is rotatably connected to the roller base (2) by means of an insulated bearing (3), an upper roller (21) which synchronously rotates with the roller base (2) and is conductively connected to the roller base (2) is provided on the roller base (2), and when the roller base (2) rotates relative to the main shaft (1), the roller base (2) and the main shaft (1) achieve electrical connection by means of a conductive liquid.

Description

Gas cylinder seam welding roller structure

technical field

The invention relates to a gas cylinder seam welding roller structure, which belongs to the welding technical field of gas cylinder manufacturing.

Background technique

In the process of circular rotation welding of existing gas cylinders, especially in the seam welding of gas cylinders, the mechanical friction of conductive rings or roller discs is often used to transmit the welding current. The phenomenon of contact arcing, burning and burning greatly affects the stability of the welding current and the service life of the welding tool, making it difficult to guarantee the welding quality and appearance quality of the workpiece.

technical problem

The purpose of the present invention is to provide a gas cylinder seam welding roller structure, which solves the problems in the prior art that during the seam welding process of the gas cylinder, the mechanical transmission contact transmits a large current, and the contacts are prone to arcing, burns and burns. question.

technical solutions

The above technical purpose of the present invention is mainly solved by the following technical solutions: a gas cylinder seam welding roller structure, comprising a main shaft and a wheel seat arranged on the outside of the main shaft, the main shaft is rotatably connected to the wheel seat through an insulating bearing, and the wheel The seat is provided with an upper roller that rotates synchronously with the wheel seat and is electrically connected to the wheel seat. When the wheel seat and the main shaft rotate relative to each other, the wheel seat and the main shaft are electrically connected through conductive liquid; The current cannot be introduced into the insulating bearing, so that the contact arc in the insulating bearing can be avoided and the bearing can be damaged. When the wheel seat is rotating, the conductive liquid is under the action of its own gravity, so that the conductive liquid and the lower circumferential surface of the wheel seat are always kept in full contact, so as to achieve a large area of the circumference of the flexible contact, which is used to transmit the transmission of large welding current, so that the The welding current is relatively stable, which fundamentally improves the welding quality, and effectively avoids the occurrence of arcing, burns and burns caused by the large current transmitted by the mechanical transmission contacts.

Preferably, the main shaft includes a support part and a conductive part, a cavity is provided on the wheel base, an inner wall of the cavity is provided with an annular inner protrusion, and the insulating bearing is located at one end face of the annular inner protrusion And sleeved on the support part, the conductive part is located at the other end face of the annular inner protrusion; the arrangement of the above-mentioned chamber can avoid the contact between the main shaft and the wheel seat, reduce the risk of arcing or burns of the contact, and through the annular The inner protrusion blocks the insulating bearing, preventing the bearing from being damaged due to the contact between the insulating bearing and the conductive liquid.

Preferably, at least one sealing ring is provided between the conductive part and the insulating bearing; the above-mentioned sealing ring is arranged to isolate the conductive liquid and the insulating bearing, and to strengthen the sealing between the conductive liquid and the insulating bearing, so as to maximize the sealing performance between the conductive liquid and the insulating bearing. The isolation of conductive liquid and insulating bearings.

Preferably, a sealing end cover is provided on one end of the wheel base close to the conductive part, a gap is formed between the conductive part and the cavity, and the sealing end cover, the wheel base and the conductive part are enclosed with each other to form a a first conductive cavity, the conductive part is provided with a second conductive cavity whose one end communicates with the first conductive cavity, and at least one conductive cavity is provided on the side wall of the second conductive cavity to communicate with the gap between the conductive part and the cavity The connection cavity of the first conductive cavity and the conductive part described above can minimize the capacity of the conductive liquid in the first conductive cavity to ensure that the conductive liquid is fully filled in the first conductive cavity, and the second conductive cavity can be fully filled. And the setting of the connection cavity is convenient to automatically disperse the conductive liquid to the inner wall of the cavity to ensure the stability of the current transmission.

Preferably, an annular gasket is provided between the sealing end cover and the wheel base, a liquid injection port communicating with the first conductive cavity is provided on the sealing end cover, and a sealing screw is provided on the liquid injection port; The setting of the sealing gasket is convenient to strengthen the sealing between the sealing end cover and the wheel seat and avoid the leakage of the conductive liquid.

Preferably, a horizontally arranged and actively rotatable lower roller is arranged below the upper roller, and the outer wall of the upper roller can abut with the end face of the lower roller to realize a transmission connection; In order to complete the circumferential welding of the welding workpiece and ensure the smooth progress of the welding work.

Preferably, the outer end of the support part on the main shaft is provided with a conductive block, the conductive block and the lifting guide rod that can move up and down, and the lifting guide rod is provided with a conductive sheet connected to an external power supply; the above-mentioned conductive block And the arrangement of the lift guide rod is convenient to conduct the current, so that the current can be conducted through the conductive sheet, and the conductive sheet can be deformed with the movement of the lift guide rod.

beneficial effect

Therefore, the invention has the characteristics of avoiding the phenomenon of arcing, burning and burning of the contacts caused by the transmission of large currents by the mechanical transmission contacts during the seam welding process of the gas cylinder.

Description of drawings

Fig. 1 is the structural representation of the present invention;

FIG. 2 is a schematic structural diagram of the conductive portion in FIG. 1 .

BEST MODE FOR CARRYING OUT THE INVENTION

The technical solutions of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

As shown in Figure 1-2, a gas cylinder seam welding roller structure includes a main shaft 1 and a wheel base 2 arranged outside the main shaft 1. The main shaft 1 is rotatably connected to the wheel base 2 through an insulating bearing 3, and the wheel base 2 is provided with The upper roller 21 that rotates synchronously with the wheel base 2 and is electrically connected to the wheel base 2. When the wheel base 2 rotates relative to the main shaft 1, the wheel base 2 and the main shaft 1 are electrically connected through conductive liquid. The electric current cannot be introduced into the insulating bearing, so as to avoid contact arcing in the insulating bearing and cause bearing damage. The above-mentioned wheel seat and the main shaft are electrically connected through conductive liquid, so that there is no mechanical transmission between the wheel seat and the main shaft. When the wheel seat is rotating, the conductive liquid is under the action of its own gravity, so that the conductive liquid and the lower circumferential surface of the wheel seat are always kept in full contact, so as to achieve a large area of the circumference of the flexible contact, which is used to transmit the transmission of large welding current, so that the welding The current is relatively stable, which fundamentally improves the welding quality, and effectively avoids the occurrence of arcing, burns and burning of the contacts due to the large current transmitted by the mechanical transmission contacts.

The main shaft 1 includes a support portion 11 and a conductive portion 12, a chamber 21 is provided on the wheel base 2, an annular inner protrusion 211 is provided on the inner wall of the chamber 21, and the insulating bearing 3 is located at one end of the annular inner protrusion 211 and is sleeved. Set on the support part 11, the conductive part 12 is located at the other end face of the annular inner protrusion 211, the arrangement of the above-mentioned chamber can avoid the contact between the main shaft and the wheel seat, reduce the risk of arcing or burns of the contacts, and pass through the inner ring. The protrusions can block the insulating bearing and prevent the bearing from being damaged due to contact between the insulating bearing and the conductive liquid; at least one sealing ring 31 is arranged between the conductive part 12 and the insulating bearing 3, and the above-mentioned sealing ring is arranged to facilitate the isolation of the conductive liquid and the insulation. Bearing, strengthen the sealing between the conductive liquid and the insulating bearing, so as to isolate the conductive liquid and the insulating bearing to the greatest extent; the insulating bearing only plays the role of rotation and does not transmit the welding current, so as to avoid the burn of the roller by the large current and ensure the bearing service life.

The end of the wheel base 2 close to the conductive part 12 is provided with a sealing end cover 22, a gap is formed between the conductive part 12 and the chamber 21, and the sealing end cover 22, the wheel base 2 and the conductive part 12 are enclosed with each other to form a second space. A conductive cavity 23 , the conductive part 12 is provided with a second conductive cavity 121 whose one end communicates with the first conductive cavity 23 , and the side wall of the second conductive cavity 121 is provided with at least one connection between the conductive part 12 and the cavity 21 . The connection cavity 122 connected by a gap, the above-mentioned arrangement of the first conductive cavity and the conductive part can reduce the capacity of the conductive liquid in the first conductive cavity to the greatest extent, so as to ensure that the conductive liquid is fully filled in the first conductive cavity, and the first conductive cavity can be fully filled. Two conductive cavities and connecting cavities are arranged so that the conductive liquid can be automatically dispersed to the inner wall of the cavity to ensure the stability of current transmission; an annular gasket 221 is arranged between the sealing end cover 22 and the wheel base 2 , and the sealing end cover 22 is provided with an annular gasket 221 There is a liquid injection port 222 communicating with the first conductive cavity 23, and a sealing screw 223 is provided on the liquid injection port 222. The above-mentioned annular gasket is arranged to enhance the sealing between the sealing end cover and the wheel seat, and avoid conducting electricity. Liquid leakage; the above-mentioned liquid injection port has the characteristics of convenient replenishment and filling, the above-mentioned connecting cavity can be cylindrical and radially distributed with the second conductive cavity as the axis, and the connecting cavity can also be inclined radially to one side. Ensure that the conductive liquid can enter the gap during the rotation of the wheel base.

Below the upper roller 21 is a lower roller 4 that is horizontally arranged and can be rotated actively. The outer wall of the upper roller 12 can abut with the end face of the lower roller 4 to realize a transmission connection. The circumference of the welding workpiece is welded to ensure the smooth progress of the welding work; the outer end of the support part 11 on the main shaft 1 is provided with a conductive block 13, the conductive block 13 and the lifting guide rod 14 that can be moved up and down, and the lifting guide rod 14 is provided with The conductive sheet 141 connected to the external power supply, the above-mentioned conductive block and the lifting guide rod are arranged to facilitate the conduction of the current, so that the current can be conducted through the conductive sheet, and the conductive sheet can be deformed with the movement of the lifting guide rod; The rollers make circular motion in the horizontal direction under the action of the transmission shaft. The upper rollers are driven by the lower rollers to make circular motions around the upper spindle axis in the vertical direction. When placing the workpiece, the lifting guide rod drives the upper roller to move upward as a whole. After the workpiece is placed, the lifting guide rod controls the upper roller to move the workpiece down and press the column for seam welding.

In this structure, the conductive liquid is injected from the injection port into the conductive cavity before working, and the injection liquid flows into the first conductive cavity from the top due to the action of gravity. After filling, the sealing screw is tightened. The welding workpiece is placed on the lower roller, the air pressure switch is turned on to make the lifting guide rod press down the workpiece, the upper roller and the lower roller are in contact with each other to make corresponding circular motion, and the welding current flows from the lower rotating shaft, the lower roller, the welding workpiece, the upper roller and the wheel seat. , Conductive fluid, spindle, lifting guide rod, conductive block to the power supply to form a welding current loop.

Claims

[Corrected 31.05.2021 in accordance with Rule 26]
A gas cylinder seam welding roller structure, characterized in that it comprises a main shaft (1) and a wheel seat (2) arranged outside the main shaft (1), the main shaft (1) being connected to the wheel seat (2) through an insulating bearing (3) ) rotatably connected, the wheel seat (2) is provided with an upper roller (21) that rotates synchronously with the wheel seat (2) and is electrically connected to the wheel seat (2), the wheel seat (2) is connected to the main shaft (1) During relative rotation, the wheel seat (2) and the main shaft (1) are electrically connected through conductive liquid.
[Corrected 31.05.2021 in accordance with Rule 26]
The gas cylinder seam welding roller structure according to claim 1, characterized in that: the main shaft (1) comprises a support part (11) and a conductive part (12), and a cavity ( 21), an annular inner protrusion (211) is provided on the inner wall of the chamber (21), and the insulating bearing (3) is located at one end face of the annular inner protrusion (211) and is sleeved on the support part (11) ), the conductive portion (12) is located at the other end face of the annular inner protrusion (211).
[Corrected 31.05.2021 in accordance with Rule 26]
The gas cylinder seam welding roller structure according to claim 2, characterized in that: at least one sealing ring (31) is provided between the conductive part (12) and the insulating bearing (3).
[Corrected 31.05.2021 in accordance with Rule 26]
The gas cylinder seam welding roller structure according to claim 2, characterized in that: the end of the wheel seat (2) close to the conductive part (12) is provided with a sealing end cover (22), and the conductive part (12) There is a gap between the sealing end cover (22), the wheel base (2) and the conductive part (12) to form a first conductive cavity (23), the conductive The part (12) is provided with a second conductive cavity (121) with one end communicating with the first conductive cavity (23), and at least one connection with the conductive part (12) and the conductive part (12) and The gaps between the chambers (21) communicate with the connecting chambers (122).
[Corrected 31.05.2021 in accordance with Rule 26]
The gas cylinder seam welding roller structure according to claim 4, characterized in that: an annular gasket (221) is arranged between the sealing end cover (22) and the wheel seat (2), and the sealing end cover (22) ) is provided with a liquid injection port (222) communicating with the first conductive cavity (23), and a sealing screw (223) is provided on the liquid injection port (222).
[Corrected 31.05.2021 in accordance with Rule 26]
The gas cylinder seam welding roller structure according to claim 1, characterized in that: a horizontally arranged and actively rotatable lower roller (4) is arranged below the upper roller (21), and the upper roller (12) is provided with a lower roller (4). The outer wall can abut with the end face of the lower roller (4) to realize the transmission connection.
[Corrected 31.05.2021 in accordance with Rule 26]
The gas cylinder seam welding roller structure according to claim 2, characterized in that: the outer end of the support part (11) on the main shaft (1) is provided with a conductive block (13), and the conductive block (13) is connected to the outer end of the support part (11). A lift guide rod (14) that can move up and down is provided on the lift guide rod (14) with a conductive sheet (141) connected to an external power source.