CN113231756A

CN113231756A - Girth welding equipment and girth welding method for tubeless engineering rim

Info

Publication number: CN113231756A
Application number: CN202110711022.9A
Authority: CN
Inventors: 肖海
Original assignee: Zhejiang Hongyuan Wheel Co ltd
Current assignee: Zhejiang Hongyuan Wheel Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-08-10

Abstract

The invention discloses a girth welding device and a girth welding method for a tubeless engineering rim. The girth welding method comprises the steps of prewelding, feeding, welding gun in place, girth welding and blanking. According to the ring welding equipment and the ring welding method for the tubeless engineering rim, welding is performed in a simultaneous staggered ring welding mode, so that the welding efficiency of the tubeless engineering rim is improved, the problem of simultaneous welding of multi-section workpieces is solved, and the welding quality of the rim can be effectively ensured. The feeding and discharging of the girth welding equipment are convenient and fast, and the manual dependence degree of the welding process is further reduced.

Description

Girth welding equipment and girth welding method for tubeless engineering rim

Technical Field

The invention belongs to the technical field of rim production, and particularly relates to girth welding equipment and a girth welding method for a tubeless engineering rim.

Background

The tubeless engineering rim is formed by sequentially welding an inner wheel ring, a middle connecting cylinder and a groove ring, wherein one side of the inner wheel ring is outwards expanded to form an inner wheel edge, the other side of the inner wheel ring is welded with the middle connecting cylinder, and the groove ring is provided with an annular groove. In welding process, the junction of interior rim and intermediate junction section of thick bamboo, intermediate junction section of thick bamboo and groove circle all need weld in the inboard and the outside, if use the manual work to weld like this, then need carry out quartic earlier and encircle the welding and just can accomplish, and welding efficiency is low, and is consuming time long, and the cost of labor is high, and welding quality can't guarantee. Utilize automatic welding robot to weld and can practice thrift the manual work, improve welding efficiency and guarantee welding quality, but need carry out quartic and encircle the welding equally and just can accomplish the welding. No matter manual welding or automatic robot welding, the welding process needs to finish four times of surrounding welding successively, the positions and the states of the inner ring, the middle connecting cylinder and the groove ring need to be strictly controlled in the process, otherwise, the welding quality is easily influenced, and the operation difficulty is high. Therefore, it is necessary to design suitable welding equipment aiming at the characteristics of three-section type in the tubeless engineering rim, welding required for both inside and outside, and the like.

Disclosure of Invention

In order to solve the technical problems, the invention adopts the technical scheme that: a girth welding device for a tubeless engineering rim is formed by sequentially welding an inner wheel ring, an intermediate connecting cylinder and a groove ring, wherein one side of the inner wheel ring is outwards expanded to form an inner wheel edge, the other side of the inner wheel ring is welded with the intermediate connecting cylinder, the groove ring is provided with a groove, the girth welding device comprises a base and four electric welding devices, each electric welding device comprises a welding gun, two sides of the base are respectively fixed with an upright post, an upper guide rail and a lower guide rail are sequentially arranged on the upright posts from top to bottom, sliding blocks are respectively arranged on the upper guide rail and the lower guide rail and are respectively driven by a first driving mechanism to move on the upper guide rail or the lower guide rail, sliding rail rods which are horizontally arranged are respectively and fixedly connected on the sliding blocks, horizontal sliding rails are arranged on the sliding rail rods, horizontal sliding rods are arranged on the horizontal sliding rails, one ends of the horizontal sliding rods are slidably arranged on the horizontal sliding rails, the other ends of the horizontal sliding rods are connected with the welding guns, the horizontal sliding rods are driven by a second driving mechanism to move on the horizontal sliding rails, be equipped with the rim supporting seat of installing on the base between the stand, the rim supporting seat is including two parallel arrangement's backing roll, the axis of backing roll is parallel with the length direction of horizontal slide rail, form the welding position that is used for placing the rim between two backing rolls, the backing roll is rotated by the drive of third actuating mechanism, welding position top is equipped with electrically conductive pinch roller, electrically conductive pinch roller is driven by fourth actuating mechanism and is gone up and down, fourth actuating mechanism installs on the crossbeam, the both ends of crossbeam fixed connection stand respectively, each electric welding equipment is connected to electrically conductive pinch roller electricity.

Preferably, one side of the base is set as a feeding area, the other side of the base is set as a discharging area, the welding position is located between the feeding area and the discharging area, horizontally arranged feeding guide rails are fixedly mounted on the inner sides of the columns respectively, one end of each feeding guide rail is located in the feeding area, the other end of each feeding guide rail is located in the discharging area, feeding sliders are mounted on the feeding guide rails respectively and driven by a fifth driving mechanism to move on the corresponding feeding guide rails respectively, feeding telescopic arms are mounted on the feeding sliders and driven by a sixth driving mechanism to stretch, the stretching direction of the feeding telescopic arms is reversely parallel to the axis of the supporting roller, the two feeding telescopic arms are arranged oppositely, the feeding area is connected with a storage platform which is obliquely arranged, and the feeding area is provided with a baffle which is fixed on the base.

Preferably, the cross section of the baffle is semicircular or circular crown-shaped.

Preferably, one of the two support rollers is a driving support roller, the other support roller is a driven support roller, gears are respectively installed on the driving support roller and the driven support roller, the third driving mechanism comprises a motor, the motor drives the driving support roller to rotate, and the driving support roller drives the driven support roller to rotate through a chain matched with the gears.

Preferably, the support roller is sequentially provided with a front limit ring and a rear limit ring, the front limit ring is matched with the inner ring, and the rear limit ring is matched with the groove ring.

Preferably, an elastic support ring fixed on the support roller is arranged between the front limit ring and the rear limit ring.

Preferably, the number of the conductive pressing wheels is two, the two conductive pressing wheels are rotatably mounted on a lifting seat, the lifting seat is driven to lift by a fourth driving mechanism, and the two conductive pressing wheels are respectively located on two sides of the axis of the tubeless engineering rim in the welding position.

Preferably, the conductive pressing wheel is made of copper.

The girth welding method of the tubeless engineering rim utilizes the girth welding equipment, and comprises the following steps:

the method comprises the following steps that firstly, prewelding is carried out, the joint of an inner ring and an intermediate connecting cylinder is set as a first welding ring, the joint of a groove ring and the intermediate connecting cylinder is set as a second welding ring, the prewelding comprises 2-5 welding points which are sequentially arranged on the first welding ring or the second welding ring, and the inner ring, the intermediate connecting cylinder and the groove ring form a whole rim after prewelding;

secondly, feeding, namely placing the whole rim at a welding position of girth welding equipment, wherein the axis of the whole rim is parallel to the axis of the supporting rollers, the conductive pressing wheel descends to press the middle connecting cylinder from top to bottom, two sides of the lower part of the whole rim are respectively placed on the two supporting rollers, and the supporting rollers rotate to drive the whole rim to integrally rotate;

thirdly, welding guns are in place, the sliding blocks move up and down respectively, and the horizontal sliding rods move horizontally respectively, so that one welding gun is positioned outside the whole rim and close to the upper end of the first welding ring, one welding gun is positioned outside the whole rim and close to the upper end of the second welding ring, one welding gun extends into the whole rim and close to the lower end of the first welding ring, and one welding gun extends into the whole rim and close to the lower end of the second welding ring;

fourthly, performing girth welding, namely controlling the integral rotation speed of the rim, simultaneously welding the integral rim by four welding guns, and completing the girth welding after the integral rim rotates for one circle;

and fifthly, blanking, wherein the sliding block and the horizontal sliding rod respectively move, the conductive pressing wheel ascends, and the whole wheel rim subjected to annular welding is taken down from the welding position.

The invention has the beneficial effects that: according to the ring welding equipment and the ring welding method for the tubeless engineering rim, welding is performed in a simultaneous staggered ring welding mode, so that the welding efficiency of the tubeless engineering rim is improved, the problem of simultaneous welding of multi-section workpieces is solved, and the welding quality of the rim can be effectively ensured. The feeding and discharging of the girth welding equipment are convenient and fast, and the manual dependence degree of the welding process is further reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial schematic view of another aspect of the present invention;

figure 3 is a schematic diagram of a conductive puck structure.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, a circular welding device for tubeless engineering rims, the tubeless engineering rims are formed by welding an inner wheel rim 1, an intermediate connecting cylinder 2 and a groove ring 3 in sequence, one side of the inner wheel rim 1 is expanded to form an inner wheel rim 4, the other side of the inner wheel rim is welded with the intermediate connecting cylinder 2, the groove ring 3 is provided with an annular groove 5, the circular welding device comprises a base 6 and four electric welding devices, each electric welding device comprises a welding gun 7, two sides of the base 6 are respectively fixed with an upright post 8, the upright post 8 is sequentially provided with an upper guide rail 9 and a lower guide rail 10 from top to bottom, the upper guide rail 9 and the lower guide rail 10 are respectively provided with a slide block 11, the slide block 11 is respectively driven by a first driving mechanism to move on the upper guide rail 9 or the lower guide rail 10, the slide block 11 is respectively fixedly connected with a horizontally arranged slide rail rod 12, the slide rail rod 12 is provided with a horizontal slide rail 13, the horizontal slide rail 13 is provided with a horizontal slide rod 14, one end of a horizontal sliding rod 14 is slidably mounted on a horizontal sliding rail 13, the other end of the horizontal sliding rod is connected with a welding gun 7, the horizontal sliding rod 14 is driven by a second driving mechanism to move on the horizontal sliding rail 13, a rim supporting seat 15 mounted on a base is arranged between the upright posts 8, the rim supporting seat 15 comprises two supporting rollers 16 arranged in parallel, the axis of each supporting roller 16 is parallel to the length direction of the horizontal sliding rail 13, a welding position 17 for placing a rim whole 18 is formed between the two supporting rollers 16, the supporting rollers 16 are driven by a third driving mechanism to rotate, a conductive pressing wheel 19 is arranged above the welding position 17, the conductive pressing wheel 19 is driven by a fourth driving mechanism to lift, the fourth driving mechanism is mounted on a cross beam 20, two ends of the cross beam 20 are respectively and fixedly connected with the upright posts 8, and the conductive pressing wheel 19 is electrically connected with each electric welding device. The electric welding equipment, the welding gun 7, the whole rim 18 and the conductive pressing wheel 19 form a loop for the electric welding operation of the electric welding equipment. The first driving mechanism and the second driving mechanism may be conventional driving mechanisms with linear driving function, and in this embodiment, the first driving mechanism and the second driving mechanism are air cylinders respectively.

Furthermore, one side of the base 6 is set as a feeding area 20, the other side is set as a blanking area 21, the welding position 17 is located between the feeding area 20 and the blanking area 21, the inner sides of the columns 8 are respectively and fixedly provided with feeding guide rails 22 which are horizontally arranged, one ends of the feeding guide rails 22 are located in the feeding area 20, the other ends of the feeding guide rails are located in the blanking area 21, feeding sliders 23 are respectively installed on the feeding guide rails 22, the feeding sliders 23 are respectively driven by a fifth driving mechanism to move on the corresponding feeding guide rails 22, feeding telescopic arms 24 are respectively installed on the feeding sliders 23, the feeding telescopic arms 24 are driven by a sixth driving mechanism to stretch, the stretching direction of the feeding telescopic arms 24 is reversely parallel to the axis of the supporting roller 16, the two feeding telescopic arms 24 are oppositely arranged, the feeding area 20 is connected with a material storage platform 25 which is obliquely arranged, and the feeding area 20 is provided with a baffle 26 which is fixed on the base 6. The rims to be girth welded are sequentially stored on the obliquely arranged storage table 25, and the rim at the head position is blocked by the baffle 26, so that all the rims on the storage table 25 are kept in a stable state. The feeding slide block 23 moves to the feeding area 20 on the feeding guide rail 22, so that the feeding telescopic arm 24 is aligned to the rim located at the first position, the feeding telescopic arm 24 is extended and inserted into the rim located at the first position, then the feeding slide block 23 moves on the feeding guide rail 22, and the feeding telescopic arm 24 drives the rim located at the first position to sequentially cross the baffle 26 and a supporting roller 16 to roll to the welding position 17. After the rim is stabilized in the welding station 17, the loading telescopic arm 24 is retracted out of the rim. After the rim girth welding is finished, the feeding telescopic arm 24 extends into the rim which is subjected to girth welding, and the feeding slide block 23 moves to the blanking area 21 on the feeding guide rail 22. Finally, the feeding telescopic arm 24 retracts to withdraw the rim, and the feeding slide block 23 moves to the feeding area 20 on the feeding guide rail 22, so that the feeding telescopic arm 24 is aligned with the next rim which is automatically rolled off and blocked by the baffle 26. The fifth driving mechanism and the sixth driving mechanism adopt a conventional driving mechanism with a linear driving function, and the fifth driving mechanism in this embodiment is formed by a motor matching with a screw rod mechanism, and specifically includes: the motor drives the screw rod to rotate, and the screw rod pair on the screw rod is fixedly connected with the feeding slide block 23, so that the feeding slide block 23 moves on the feeding guide rail 22. The sixth driving mechanism is a cylinder.

Further, the cross section of the baffle 26 is semicircular or circular crown-shaped. The baffle 26, which is semicircular or circular crown shaped in cross section, facilitates the transfer of the rim into the welding station 17.

Furthermore, one of the two support rollers 16 is set as a driving support roller, the other is set as a driven support roller, gears are respectively installed on the driving support roller and the driven support roller, the third driving mechanism comprises a motor 27, the motor 27 drives the driving support roller to rotate, and the driving support roller drives the driven support roller to rotate through a chain matched with the gears.

Furthermore, a front limit ring 28 and a rear limit ring 29 are sequentially arranged on the supporting roller 16, the front limit ring 28 is matched with the inner ring 1, and the rear limit ring 29 is matched with the groove ring 3. Specifically, after the rim is transferred to the welding site 17, the front retainer ring 28 is located inside the inner rim 4 and close to the inner rim 4, and the front retainer ring 28 simultaneously provides a supporting function for the inner rim 1. The rear retainer ring 29 supports the groove ring 3, while an annular projection 30 capable of being caught in the annular groove 5 is provided on the rear retainer ring 29. Thus, the position of the rim in the left-right direction in the welding site 17 is restricted by the front stopper ring 28 and the rear stopper ring 29, and the position thereof in the front-rear direction and the position thereof in the up-down height are restricted by the two support rollers 16. The rim entering the welding location 17 can be accurately positioned in all directions, thereby facilitating accurate positioning of the welding gun 7.

Further, an elastic support ring 31 fixed on the support roller 16 is arranged between the front limit ring 28 and the rear limit ring 29. The elastic support ring 31 supports the intermediate connecting cylinder 2 and simultaneously plays a role in buffering and protecting the process that the rim enters and exits the welding position 17. After the conductive pinch roller 19 descends and presses the rim, the elastic support ring 31 deforms and contracts, so that the front limit ring 28 and the rear limit ring 29 can respectively support the inner wheel ring 1 and the groove ring 3, and the rim is in place. After the supporting roller 16 rotates, the elastic supporting ring 31 increases the friction force between the supporting roller 16 and the rim, and prevents the rim from slipping in the rotating process, so that the rim can rotate at a set rotating speed to complete ring welding.

Furthermore, the number of the conductive pressing wheels 19 is two, the two conductive pressing wheels 19 are rotatably installed on a lifting seat 32, the lifting seat 32 is driven by a fourth driving mechanism to lift, and the two conductive pressing wheels 32 are respectively located on two sides of the axis of the tubeless engineering rim in the welding position 17. Two electrically conductive pinch rollers 19 act on the intermediate connector 2, and the rim rotates more stably. The fourth driving mechanism may be a conventional driving mechanism with a lifting function, and in this embodiment, an air cylinder is used as the fourth driving mechanism, and the air cylinder is fixed on the cross beam 20. The telescopic rod of the cylinder is fixedly connected with the lifting seat 32, two ends of the telescopic rod are provided with guide rods, the guide rods are fixed on the lifting seat 32 in the next year, and the cross beam 20 is provided with guide sleeves matched with the guide rods. The two conductive pressing wheels 19 are more stably lifted, and the acting force applied to the middle connecting cylinder 2 after the two conductive pressing wheels are descended is more uniform.

Further, the conductive puck 19 is made of copper metal.

The girth welding method of the tubeless engineering rim comprises the following steps:

the method comprises the following steps that firstly, prewelding is carried out, the joint of the inner ring 1 and the middle connecting cylinder 2 is set to be a first welding ring 33, the joint of the groove ring 3 and the middle connecting cylinder 2 is set to be a second welding ring 34, prewelding comprises 2-5 welding points which are sequentially arranged on the first welding ring 33 or the second welding ring 34, and the inner ring 1, the middle connecting cylinder 2 and the groove ring 3 form a rim whole 18 after prewelding. The prewelding can be manual welding or welding completion by using a welding robot, and the prewelding only needs to weld a plurality of welding points, so that the inner ring 1, the intermediate connecting cylinder 2 and the groove ring 3 form a rim whole. The prewelded rim ensemble 18 is sequentially loaded on the storage table 25.

And step two, loading, namely placing the whole rim 18 at a welding position 17 of the girth welding equipment, wherein the axis of the whole rim 18 is parallel to the axis of the supporting rollers 16, the conductive pressing wheel 19 descends to press the middle connecting cylinder 2 from top to bottom, two sides of the lower part of the whole rim 18 are respectively placed on the two supporting rollers 16, and the supporting rollers 16 rotate to drive the whole rim 18 to rotate.

And step three, the welding guns 7 are in place, the sliding blocks 11 move up and down respectively, the horizontal sliding rods 14 move horizontally respectively, so that one welding gun 7 is positioned outside the whole rim body 18 and close to the upper end of the first welding ring 33, one welding gun 7 is positioned outside the whole rim body 18 and close to the upper end of the second welding ring 34, one welding gun 7 extends into the whole rim body 18 and close to the lower end of the first welding ring 33, and one welding gun 7 extends into the whole rim body 18 and close to the lower end of the second welding ring 34.

And step four, ring welding, wherein the rotating speed of the whole rim 18 is controlled, four welding guns simultaneously weld the whole rim, and the whole rim rotates for one circle to complete ring welding, so that the inner side and the outer side of the first welding ring 33 and the inner side and the outer side of the second welding ring 34 are simultaneously welded, the inner side and the outer side of the first welding ring 33 are respectively welded at the upper end and the lower end of the first welding ring 33, namely the inner side welding and the outer side welding at the same position of the first welding ring 33 are staggered, the inner side welding is carried out at the same position after the outer side welding of the first welding ring 33 rotates for a half circle, cold cutting time is provided for the welding position, and the inner side welding and the outer side welding cannot influence each other, so that the welding quality is improved.

And step five, blanking, wherein the sliding block 11 and the horizontal sliding rod 14 move respectively, the conductive pressing wheel 19 rises, and the circular welded rim whole 18 is taken down from the welding position 17.

It should be noted that the technical features of the welding device, the first driving mechanism, the second driving mechanism, the third driving mechanism, the fourth driving mechanism, the fifth driving mechanism, the sixth driving mechanism, etc. related to the present patent application should be regarded as the prior art, and the specific structure, the operation principle, the control mode and the spatial arrangement mode of the technical features may be selected conventionally in the field, and should not be regarded as the invention point of the present patent, and the present patent is not further specifically described in detail.

Having described preferred embodiments of the present invention in detail, it is to be understood that modifications and variations may be resorted to without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A girth welding device of a tubeless engineering rim is characterized in that the girth welding device comprises a base and four electric welding devices, the electric welding devices respectively comprise welding guns, two sides of the base are respectively fixed with stand columns, the stand columns are respectively and sequentially provided with an upper guide rail and a lower guide rail from top to bottom, the upper guide rail and the lower guide rail are respectively provided with a slide block, the slide blocks are respectively driven by a first driving mechanism to move on the upper guide rail or the lower guide rail, the slide blocks are respectively and fixedly connected with horizontally arranged slide rail rods, the slide rail rods are provided with horizontal slide rails, the horizontal slide rails are provided with horizontal slide rods, one ends of the horizontal slide rods are slidably arranged on the horizontal slide rails, and the other ends of the horizontal slide rods are connected with the welding guns, the horizontal sliding rod is driven by a second driving mechanism to move on the horizontal sliding rail, a rim supporting seat installed on the base is arranged between the stand columns, the rim supporting seat comprises two supporting rolls arranged in parallel, the axes of the supporting rolls are parallel to the length direction of the horizontal sliding rail, a welding position used for placing a rim is formed between the two supporting rolls, the supporting rolls are driven by a third driving mechanism to rotate, a conductive pressing wheel is arranged above the welding position, the conductive pressing wheel is driven by a fourth driving mechanism to lift, the fourth driving mechanism is installed on the cross beam, two ends of the cross beam are fixedly connected with the stand columns respectively, and the conductive pressing wheel is electrically connected with each electric welding device.

2. The circumferential welding device for tubeless engineering rims as claimed in claim 1, wherein one side of the base is provided with a feeding area, the other side is provided with a discharging area, the welding position is located between the feeding area and the discharging area, the inner sides of the columns are respectively and fixedly provided with a horizontally arranged feeding guide rail, one end of each feeding guide rail is located in the feeding area, the other end of each feeding guide rail is located in the discharging area, the feeding guide rails are respectively provided with a feeding slide block, the feeding slide blocks are respectively driven by a fifth driving mechanism to move on the corresponding feeding guide rails, the feeding slide blocks are respectively provided with a feeding telescopic arm, the feeding telescopic arms are driven by a sixth driving mechanism to extend and retract, the extension of the feeding telescopic arms is reversely parallel to the axis of the supporting rollers, the two feeding telescopic arms are oppositely arranged, the feeding area is connected with an obliquely arranged material storage platform, and the feeding area is provided with a baffle fixed on the base.

3. A circumferential welding apparatus for tubeless engineering rims according to claim 2, characterized in that said baffles have a semicircular or circular crown shape in cross section.

4. The apparatus of claim 1 wherein one of the two support rolls is a driving support roll and the other is a driven support roll, the driving support roll and the driven support roll are each provided with a gear, the third drive mechanism includes a motor, the motor rotates the driving support roll, and the driving support roll rotates the driven support roll via a chain engaged with the gear.

5. The apparatus for boxing of tubeless engineering rims, in accordance with claim 4, wherein said support rollers are provided in sequence with a front limit ring and a rear limit ring, said front limit ring being associated with said inner rim and said rear limit ring being associated with said groove ring.

6. A ring welding apparatus for tubeless engineering rims according to claim 4, characterized in that between said front and rear containment rings there is provided an elastic support ring fixed to the support rollers.

7. The apparatus for boxing of said tubeless engineering rim in accordance with claim 1, wherein said number of conductive rollers is two, two conductive rollers are rotatably mounted on a lifting seat, the lifting seat is driven by a fourth driving mechanism to lift, and the two conductive rollers are respectively located at two sides of the axis of the tubeless engineering rim in the welding position.

8. The apparatus for circumferential welding of tubeless engineering rims of claim 7, wherein said conductive pinch roller is made of copper metal.

9. Method for the circumferential welding of tubeless engineering rims, characterized in that the circumferential welding apparatus according to any of claims 1-8 is used, comprising the following steps: