CN221047515U - Feeding buffer device and welding system - Google Patents
Feeding buffer device and welding system Download PDFInfo
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- CN221047515U CN221047515U CN202322512718.6U CN202322512718U CN221047515U CN 221047515 U CN221047515 U CN 221047515U CN 202322512718 U CN202322512718 U CN 202322512718U CN 221047515 U CN221047515 U CN 221047515U
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- 238000003466 welding Methods 0.000 title claims abstract description 76
- 230000008859 change Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 6
- 238000003860 storage Methods 0.000 claims description 18
- 230000003139 buffering effect Effects 0.000 claims description 5
- 238000012840 feeding operation Methods 0.000 claims description 4
- 238000013016 damping Methods 0.000 claims description 2
- 238000005491 wire drawing Methods 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 description 9
- 238000004804 winding Methods 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The application discloses a feeding buffer device and a welding system, comprising a feeding buffer device, a wire feeding unit and a wire feeding unit, wherein the feeding buffer device is used for feeding welding wires in the welding process, and the wire feeding speed is adjusted according to a control signal; the speed indicating unit is driven by the welding wire and changes in position; a distance measuring unit for measuring the position change amount of the speed indicating unit; and generating a control signal according to the relation between the preconfigured position change amount and the speed adjustment value and sending the control signal to the wire feeding unit so as to change the wire feeding speed of the wire feeding unit. By internally judging the wire drawing speed of the tool end, the need of establishing communication between the wire feeding power assisting system and the welding system is eliminated, and the speed response delay caused by passive speed regulation is eliminated.
Description
Technical Field
The utility model belongs to the technical field of additive manufacturing, and particularly relates to a feeding buffer device and a welding system using the same.
Background
In robot automatic welding, welding is performed for a long time without interruption because of high welding speed, high fuse efficiency, and wide welding range, and therefore, a dedicated wire feeding device must be used to feed the welding wire. Currently, there are two main types of mainstream packaging forms of automatic welding wire: wire coil and barrel wire.
The wire coil is formed by winding welding wire into a flat disc-shaped wire coil and then placing the wire coil into a circular metal or plastic disc. The wire coil has the advantages of high utilization rate of package volume, convenient transportation and storage, difficult winding and suitability for high-speed and high-efficiency wire feeding. The specification types of the wire coil are more, the single-disc quality is different from a plurality of kilograms to hundreds of kilograms, and various types of wire feeding mechanisms can be matched for use in the market. However, since the wire coil needs to rotate along with the release of the welding wire in the wire feeding process, the wire feeding mechanism must overcome the inertia of the rotation of the wire coil and adjust the rotation speed in time to adapt to different wire feeding speeds. This requires a strong driving force and control capability for the wire feeding mechanism, and particularly for large-mass wire coils, it is more necessary to introduce complicated wire feeding assisting devices and buffering mechanisms to ensure smooth wire feeding.
The barrel wire is formed by winding welding wires into a multi-layer annular large-sized wire coil, and then directly putting the wire coil into a cylindrical metal or plastic barrel. The barrel wire has the advantages that the single barrel has large mass, can reach hundreds of kilograms generally, and is suitable for long-time and durable welding. And because the barrel wire does not need to rotate in the wire feeding process, the welding wires are only released outwards layer by layer from the inner ring, so the wire drawing resistance is small, and the wire feeding mechanism is relatively simple. However, the barrel yarn has some disadvantages such as low utilization rate of package volume, inconvenient transportation and storage, and easy occurrence of winding due to loose winding.
For arc welding of a production nature, especially arc additive manufacturing (EAM), the current mainstream option is to use barreled welding wire, as a large amount of welding wire is required to permanently use to build up the metallic material. However, barreled welding wire does not meet the high demands of EAM for welding quality and efficiency, and so some high quality wire-feeding solutions have also emerged in the market in recent years. These schemes generally employ an actively driven disc wire feeder and a swing arm/chute buffer mechanism, and acquire real-time welding speed by establishing communication with the welding system, and control the disc wire feeder speed to match the wire feeder speed in time with a relatively uniform acceleration. Thus, stable wire feeding of the large-mass disc type wire feeding mechanism can be realized, and the quality and efficiency of EAM are improved. However, the scheme also has some problems, such as the need of establishing communication between the wire feeding power assisting system and the welding system, and the prior barrel type wire feeding system cannot be directly replaced; and in actual use, the risk of delayed speed response of the disc type wire feeding mechanism is still caused, and the disc type wire feeding mechanism can be loosened, and the like.
Disclosure of utility model
The utility model aims to: a feeding buffer device is provided to solve the above problems in the prior art.
The technical scheme is as follows: the utility model provides a pay-off buffer for pay-off operation in welding process includes:
the wire feeding unit is used for feeding welding wires and adjusting the wire feeding speed according to the control signal;
The speed indicating unit is driven by the welding wire and changes in position;
a distance measuring unit for measuring the position change amount of the speed indicating unit;
And generating a control signal according to the relation between the preconfigured position change amount and the speed adjustment value and sending the control signal to the wire feeding unit so as to change the wire feeding speed of the wire feeding unit.
In accordance with one aspect of the present application,
The speed indicating unit is provided with at least one weight component in the vertical direction and comprises at least one threading channel comprising a threading hole and a threading outlet;
The included angle theta between the axis of the wire outlet hole of the wire passing channel and the horizontal direction is more than 0 degrees and less than 180 degrees;
in operation, the wire imparts at least an upward momentum to the speed indicating unit.
In accordance with one aspect of the present application,
The limiting unit is used for accommodating the speed indicating unit and providing a moving space of the speed indicating unit;
The sliding pair is arranged between the limiting unit and the speed indicating unit and enables the speed indicating unit to move along a preset direction.
In accordance with one aspect of the present application,
The speed indicating unit is provided with a first female connector and a second female connector which are respectively matched with the wire inlet hole and the wire outlet hole.
According to one aspect of the application, the threading channel extends along the length direction of the speed indicating unit, and the axes of the threading hole and the threading hole are parallel to the movement direction of the speed indicating unit.
According to one aspect of the application, the threading channel comprises a straight line segment and arc segments positioned at two ends of the straight line segment.
According to one aspect of the application, the speed indication unit is detachably mounted with a counterweight.
According to one aspect of the application, the limit unit is provided with a buffer structure for buffering and damping the speed indicating unit when it descends to a predetermined position. The limiting unit is provided with a hanging plate.
According to one aspect of the application, the speed indication unit comprises:
At least one threading channel extending along the length direction of the threading channel, and an elastic unit fixed with the speed indicating unit and extending and contracting along the moving direction of the speed indicating unit.
According to an aspect of the present application, the wire feeding unit includes:
a wire supporting part for supporting the wire fed from the wire storage device;
and the power part is used for providing power for the welding wire support part so as to realize wire feeding operation.
The welding system is characterized by comprising a welding machine, a welding wire storage device and a feeding buffer device arranged between the welding machine and the welding wire storage device and according to any one of the technical schemes.
The beneficial effects are that: the application provides a wire feeding power-assisted buffer device capable of adjusting wire feeding speed in real time according to wire feeding buffer allowance. The device eliminates the need of establishing communication between the wire feeding booster system and the welding system by internally judging the wire drawing speed at the tool end, and eliminates the speed response delay caused by passive speed adjustment, thereby realizing the complete replacement of the existing barrel wire feeding system.
Drawings
Fig. 1 is a schematic diagram of the present application.
FIG. 2 is a schematic partial structure of the buffering device of the present application.
FIG. 3 is a schematic view of a portion of a cushioning device according to another embodiment of the present application.
FIG. 4 is a schematic view of the structure of the bottom plate portion of the buffering device of the present application.
Fig. 5 is a schematic view of the structure of the welding system of the present application.
Fig. 6 is a schematic view of another angle of the welding system of the present application.
Fig. 7 is a schematic view of a further angle of the welding system of the present application.
In the drawings, reference numerals are as follows: welding wire a, storage device 1,
Wire feeding unit 2, first conduit 201, wire inlet 202, annular sensor 203, wire feeding bracket 204, second conduit 205, third conduit 206, tail joint 207, conduit bracket 208, fourth conduit 209, motor and speed reducer 210;
A speed indicating unit 3, a first female connector 31, a first male connector 32, a second male connector 33, a second female connector 34,
The device comprises a frame 301, a fixed plate 302, an insulating strip 303, a bracket 304, a guide shaft 305, a movable plate 306, a counterweight 307, a guide shaft support 308, a sensor bracket 309, a hanging plate 310, a first quick-plug block 311, a second quick-plug block 313 and a third quick-plug block 314; linear bearing 315, fourth quick insert 316, base plate 317, shaft mount 318, spring 319;
a distance measuring unit 4.
Detailed Description
As shown in fig. 1 to 4, an embodiment is provided as follows, and it should be noted that examples provided herein are provided to illustrate the concept and principles of the present application, and are not intended to limit the scope of the present application.
In order to avoid the above-mentioned problems in the background art, a scheme is provided in which the wire feeding speed is measured and judged by providing a speed indicating unit, and then the wire feeding speed is adjusted by a wire feeding unit, so that the welding wire feeding requirement is satisfied. In particular, a storage device, such as an existing wire storage device, may be included, and in particular the wire storage device described in the background or prior art may be employed.
During operation, the welding wire is connected to the wire feeding unit, the welding wire is drawn to enter a preset position, and the welding wire enters the welding machine. In order to meet the welding requirements, the running speed of the welding wire is changed, so that the wire feeding speed needs to be adjusted. For this embodiment a speed indication unit is added. The welding wire passes through the speed indicating unit, so that the physical quantity of the speed indicating unit, such as the position, is moved, the running speed of the current welding wire can be obtained, and then the working state of the wire feeding unit can be adjusted, such as the wire feeding speed is increased or reduced, so that the wire feeding speed meets the welding requirement. Therefore, in the present embodiment, a speed indicating unit and a ranging unit that detects the speed indicating unit physical quantity change information are provided.
Specifically, the speed of the wire is indicated by the weight of the speed indicating means itself. In other words, the speed of the welding wire forms momentum, the position of the speed indicating unit is changed, the current speed information of the welding wire can be obtained by detecting the position change information, and then the wire feeding speed is adjusted to enable the speed indicating unit to return to a preset position. In one case, the wire passes through the speed indicator unit, and the wire can move the speed indicator unit up or down (component in the vertical direction) as long as the speed indicator unit has a component in the vertical direction. For example, the speed is fast, the force of the welding wire to the speed indicating unit is increased, the speed indicating unit moves upwards, and at the moment, the wire feeding speed is adjusted to increase the wire feeding speed of the wire feeding hole of the speed indicating unit, so that the speed indicating unit returns to the preset position. In other embodiments, the weight may be equivalently replaced by an elastic structure, i.e. an elastic force field or the like is used instead of the gravitational field.
In a further preferred embodiment, the speed indication unit is arranged with a weight component in the vertical direction at least by itself or externally connecting other structural units with a weight component in the vertical direction in order to achieve the intended purpose. In addition, a threading channel comprising a threading hole and a threading hole is required to be arranged, and the threading channel is arranged in a manner that the welding wire can give the speed indication unit an upward momentum, so that the position state of the speed indication unit is changed, and when the welding wire speed is increased and the wire feeding speed is not kept up, an upward pulling force is given to the speed indication unit, and after the wire feeding speed is increased, the pulling force to the speed indication unit is reduced. In other words, as the wire accelerates, the speed on both sides is unbalanced, and the wire is stressed or pulled between the wire exit and wire entrance, which force acts on the speed indicating unit, changing the position of the speed indicating unit. When the wire feeding speed is increased or decreased to be balanced, the acting force applied by the speed indicating unit is changed.
Therefore, the running route of the welding wire between the speed indicating units is designed, and the included angle theta between the axis of at least the wire outlet hole and the horizontal direction is 0 degrees less than or equal to 180 degrees. If the axis of the wire outlet is at 0 or 180 to the horizontal and there is no swivel or bend inside the wire passage, no vertical charge is provided. In some embodiments, powering the speed indicating unit may be accomplished by forming an endless wire feed path.
When the working end increases the speed of pulling the welding wire during operation, the movable plate moves upwards along the guide shaft. After the distance between the distance measuring sensor and the movable plate is shortened, the wire feeding speed of the wire feeding bracket is increased, and thus the movable plate moves downwards until the distance measuring sensor is stabilized within a set range. When the working end reduces the speed of pulling the welding wire, the movable plate moves downwards along the guide shaft. After the distance measuring sensor detects that the distance between the distance measuring sensor and the movable plate is prolonged, the wire feeding speed of the wire feeding bracket is reduced, and thus the movable plate moves upwards until the distance measuring sensor is stabilized within a set range. The movable plate moves up and down to keep dynamic balance, and the movable range of the movable plate is the buffer area of the device.
In a further embodiment, in order to limit the speed indicating unit, the stability of the movement of the speed indicating unit is improved by setting a limiting unit and a sliding pair, specifically, a frame can be adopted to form a body, and then a linear bearing or a sliding seat is arranged, so that the speed indicating unit moves along a preset direction, the movement is more stable, and the position of the speed indicating unit is convenient to measure.
In a further embodiment, at least two female connectors may be provided for engaging the wire feed hole and the wire discharge hole in order to facilitate the passage of the welding wire through the speed indicating unit. The wire passage is preferably provided non-kinking and has an arcuate region to avoid wire damage. In order to enable the welding wire to extend as long as possible in the speed indication unit, the radius of the arc-shaped bending is increased, the curvature of the bending part is reduced, the wire penetrating channel extends along the length direction of the speed indication unit, and the axes of the wire inlet hole and the wire outlet hole are parallel to the movement direction of the speed indication unit. In other words, after entering from one end of the speed indicating unit, the welding wire turns to the other end of the speed indicating unit through an arc bend, then passes through the other end of the speed indicating unit after being bent through an arc bend, and the wire feeding direction is parallel to the axis where the wire discharging direction is located.
In a further embodiment, a counterweight may be added to the speed indicating unit in order to make the speed indicating unit more sensitive, i.e. the welding wire applies a smaller force to the speed indicating unit, i.e. to bring the speed indicating unit into position movement.
In a further embodiment, a spring or rubber cushion is added above the base in order to avoid that the speed indication unit hits the base when it is lowered to the bottom.
In a further embodiment, if the direction of the speed indicating unit is adjusted, such as being placed horizontally, the gravitational field may be equivalently replaced by adding an elastic unit. Specifically, the speed indicating unit comprises at least one threading channel extending along the length direction thereof, and an elastic unit fixed with the speed indicating unit and extending and contracting along the moving direction thereof.
In a further embodiment, the wire feeding unit comprises at least a power section for carrying the wire fed from the wire storage device and for powering the wire support section for the wire feeding operation.
A detailed embodiment is given below in conjunction with fig. 2 to 7 to illustrate the implementation and details of the present application.
In this embodiment, a welding system is described as a main body.
The welding system mainly comprises:
The storage device 1 is realized by a sliding trolley or related equipment or by the prior art. The wire storage drum is placed on a straight mixing wheel. Locking means and the like may also be provided. And will not be described in detail herein.
The wire feeding unit 2 mainly includes: a first conduit 201, a wire inlet 202, an annular sensor 203, a wire feed carriage 204, a second conduit 205, a third conduit 206, a tail joint 207, a conduit bracket 208, a fourth conduit 209, a motor and a speed reducer 210.
Welding wires enter the wire feeding unit from the first guide pipe and enter through the wire inlet, and the wire inlet can be in a horn shape. An annular sensor is arranged at the wire inlet and used for judging whether welding wires exist or not and preventing idle running. The wire moves forward through the wire carriage, out through the second conduit, and into the speed indicating unit. The power source of the wire feeding unit is a motor and a speed reducer. After passing through the speed indicating unit, the welding wire is conveyed to the welding wire device through a third guide pipe and a tail joint.
The speed indicating unit 3 mainly includes: the first female connector 31, the first male connector 32, the second male connector 33, the second female connector 34, the frame 301, the fixed plate 302, the insulating strip 303, the bracket 304, the guide shaft 305, the movable plate 306, the counterweight 307, the guide shaft support 308, the sensor bracket 309, the hanging plate 310, the first quick plug 311, the second quick plug 313, and the third quick plug 314; linear bearing 315, fourth quick insert 316, bottom plate 317, shaft mount 318, spring 319. The main body is formed by a frame to mount and configure the related units. Guiding is achieved by a female connector and a male connector.
The welding wire enters the wire feeding bracket through the guide pipe after coming out of the storage device, enters the female connector arranged on the movable plate through the guide pipe and the male connector after coming out of the wire feeding bracket, enters the male connector arranged on the movable plate after passing through the guide pipe arranged on the movable plate, then enters the female connector, and then is sent into the working end through the guide pipe. The movable plate depends on self gravity and the silk threads in the movable plate are suspended in the half space. The working process is that when the working end starts to accelerate wire drawing, the movable plate moves upwards, the distance sensor detects that the distance between the movable plate and the movable plate is shortened, and at the moment, the wire feeding bracket starts to accelerate work to pull out wires from the storage device, so that the movable plate moves downwards. When the wire drawing speed of the working end is reduced, the movable plate moves downwards, the distance sensor detects that the distance between the movable plate and the wire drawing speed is increased, and at the moment, the wire feeding bracket is decelerated, so that the movable plate moves upwards. The distance range of the movable plate moving up and down is the buffer space between the working end and the storage device. The movable plate moves up and down to realize dynamic balance of the buffer area.
The ranging unit 4 may be implemented using a ranging sensor.
The preferred embodiments of the present utility model have been described in detail above, but the present utility model is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the equivalent changes belong to the protection scope of the present utility model.
Claims (10)
1. Feeding buffer device for welding wire feeding operation in the welding process, its characterized in that includes:
the wire feeding unit is used for feeding welding wires and adjusting the wire feeding speed according to the control signal;
The speed indicating unit is driven by the welding wire and changes in position;
a distance measuring unit for measuring the position change amount of the speed indicating unit;
And generating a control signal according to the relation between the preconfigured position change amount and the speed adjustment value and sending the control signal to the wire feeding unit so as to change the wire feeding speed of the wire feeding unit.
2. The feed buffer device as claimed in claim 1, wherein,
The speed indicating unit is provided with at least one weight component in the vertical direction and comprises at least one threading channel comprising a threading hole and a threading outlet;
The included angle theta between the axis of the wire outlet hole of the wire passing channel and the horizontal direction is more than 0 degrees and less than 180 degrees;
in operation, the wire imparts at least an upward momentum to the speed indicating unit.
3. The feed buffer device of claim 2, further comprising:
the limiting unit is used for accommodating the speed indicating unit and providing a moving space of the speed indicating unit;
The sliding pair is arranged between the limiting unit and the speed indicating unit and enables the speed indicating unit to move along a preset direction.
4. The feed buffer device as claimed in claim 2, wherein,
The speed indicating unit is provided with a first female connector and a second female connector which are respectively matched with the wire inlet hole and the wire outlet hole.
5. The feed buffer device of any of claims 2 to 4, wherein the threading channel extends along the length of the speed indication unit, and the axes of the feed and discharge holes are parallel to the direction of movement of the speed indication unit.
6. The feed buffer device of claim 2 wherein the threading channel comprises a straight section and arcuate sections at opposite ends of the straight section.
7. A feed buffer device as claimed in claim 3, wherein the speed indication unit is detachably fitted with a counterweight; the limiting unit is provided with a buffer structure for buffering and damping the speed indicating unit when the speed indicating unit descends to a preset position; the limiting unit is provided with a hanging plate.
8. The feed buffer device as claimed in claim 1, wherein,
The speed indication unit includes:
At least one threading channel extending along the length direction of the threading channel, and an elastic unit fixed with the speed indicating unit and extending and contracting along the moving direction of the speed indicating unit.
9. The feed buffer device of claim 1, wherein the wire feed unit comprises:
a wire supporting part for supporting the wire fed from the wire storage device;
and the power part is used for providing power for the welding wire support part so as to realize wire feeding operation.
10. A welding system comprising a welder, a wire storage device, and the feed buffer device of any of claims 1 to 9 disposed between the welder and the wire storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322512718.6U CN221047515U (en) | 2023-09-15 | 2023-09-15 | Feeding buffer device and welding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322512718.6U CN221047515U (en) | 2023-09-15 | 2023-09-15 | Feeding buffer device and welding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221047515U true CN221047515U (en) | 2024-05-31 |
Family
ID=91200566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322512718.6U Active CN221047515U (en) | 2023-09-15 | 2023-09-15 | Feeding buffer device and welding system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221047515U (en) |
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2023
- 2023-09-15 CN CN202322512718.6U patent/CN221047515U/en active Active
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