Friction welding equipment for welding thin-walled tubes of accumulators and its anti-melt-through control system
By monitoring the temperature with an infrared thermometer and switching the rotation speed accordingly, combined with the spraying of media from a cooling nozzle, the problem of melt-through during the welding of thin-walled tubes was solved, thus improving the welding quality and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU QINGFENG YIKANG MACHINERY
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-03
Smart Images
Figure CN224444851U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of metal welding equipment, and in particular relates to a friction welding equipment for welding thin-walled tubes of accumulators and its anti-melting-through control system. Background Technology
[0002] Thin-walled tubes for accumulators are widely used in hydraulic systems, automotive energy storage devices, and other fields. Their welding quality directly affects the product's sealing performance, pressure resistance, and fatigue life. In some technologies, friction welding equipment is used to weld thin-walled tubes. Friction welding achieves welding through heat generated by rotational friction; however, thin-walled tubes have rapid heat diffusion. If the heat input is too high during the friction stage, the local temperature of the tube wall can exceed the material's melting point, easily leading to pipe burn-through.
[0003] Therefore, how to prevent the thin-walled tubes of accumulators from melting through due to excessive temperature during friction welding is a technical problem that urgently needs to be solved by those skilled in the art.
[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content
[0005] This disclosure provides at least one friction welding device for welding thin-walled tubes of accumulators and its anti-melt-through control system.
[0006] In a first aspect, the present disclosure provides a friction welding device for welding thin-walled tubes of accumulators, including: a pushing mechanism, including a servo hydraulic cylinder, wherein the piston rod end of the servo hydraulic cylinder is connected to the thin-walled tube through a clamp;
[0007] The drive mechanism includes a motor and a multi-stage gearbox, wherein the motor is connected to the input shaft of the multi-stage gearbox, and the output shaft of the multi-stage gearbox is connected to a thin-walled tube via a clamp.
[0008] The pushing mechanism and the driving mechanism are arranged opposite to each other so that the welding ends of the two thin-walled tubes are coaxially aligned.
[0009] The multi-stage gearbox is equipped with an electromagnetic clutch for switching the transmission ratio between high-speed and low-speed gears.
[0010] An infrared thermometer is installed above the weld joint of the thin-walled tube to monitor the temperature of the weld joint. The infrared thermometer and the electromagnetic clutch are both electrically connected to the control module. The control module is configured to receive the temperature signal from the infrared thermometer and, when the temperature reaches a set threshold, control the electromagnetic clutch to switch to a low speed.
[0011] In one optional embodiment, the low-speed gearbox of the multi-stage transmission gearbox has an output speed of 800-1200 rpm.
[0012] The output speed of the high-speed mode is 2000-2500 rpm.
[0013] In one optional implementation, the temperature setting threshold is 80%-90% of the melting point of the thin-walled tube material.
[0014] In one optional embodiment, a cooling nozzle is also provided above the weld joint of the thin-walled tube, and both the cooling nozzle and the infrared thermometer are electrically connected to the control module.
[0015] The control module is also configured to control the cooling nozzle to spray cooling medium when the temperature reaches more than 95% of the melting point of the thin-walled tube material.
[0016] In one alternative embodiment, the cooling medium is compressed air or nitrogen.
[0017] Secondly, this disclosure also provides an anti-melt-through control system for welding thin-walled tubes of accumulators, including: an infrared thermometer disposed around the welding area of the thin-walled tube for monitoring the temperature of the welding area;
[0018] An electromagnetic clutch is installed in the multi-stage gearbox of the drive mechanism to switch the transmission ratio between high-speed and low-speed gears.
[0019] The control module is electrically connected to the infrared thermometer and the electromagnetic clutch, and is configured to: receive the temperature signal from the infrared thermometer, and control the electromagnetic clutch to switch to a low speed when the temperature reaches a set threshold.
[0020] In one optional embodiment, the low-speed gearbox of the multi-stage transmission gearbox has an output speed of 800-1200 rpm.
[0021] The output speed of the high-speed mode is 2000-2500 rpm.
[0022] In one optional implementation, the temperature setting threshold is 80%-90% of the melting point of the thin-walled tube material.
[0023] In one alternative embodiment, the control module is also electrically connected to an infrared thermometer and a cooling nozzle, the cooling nozzle being positioned above the weld joint of the thin-walled tube; and,
[0024] The control module is also configured to control the cooling nozzle to spray cooling medium when the temperature reaches 95% or more of the melting point of the thin-walled tube material.
[0025] In one alternative embodiment, the cooling medium is compressed air or nitrogen.
[0026] The beneficial effects of this utility model are that the friction welding equipment for welding thin-walled tubes of accumulators is equipped with an electromagnetic clutch in the drive mechanism, which can switch between high-speed and low-speed gears to control the rotation speed of the thin-walled tube; when the infrared thermometer detects that the temperature at the welding point is higher than the set threshold, the electromagnetic clutch is controlled to switch to the low-speed gear, so as to realize the automatic reduction of the drive mechanism and avoid local overheating and melting of the thin-walled tube.
[0027] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and drawings.
[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0030] Figure 1 A perspective view of a friction welding apparatus for welding thin-walled tubes of an accumulator provided in this embodiment of the present disclosure;
[0031] Figure 2 This is a schematic diagram of a friction welding equipment control module for welding thin-walled tubes of an accumulator, provided in an embodiment of this disclosure.
[0032] In the picture:
[0033] 100. Pushing mechanism; 110. Servo hydraulic cylinder; 111. Piston rod; 200. Fixture; 300. Thin-walled tube; 400. Drive mechanism; 410. Motor; 420. Multi-stage gearbox; 421. Output shaft; 500. Infrared thermometer; 600. Control module; 700. Cooling nozzle. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0035] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of components may be exaggerated or reduced for the purpose of effectively describing the technical content.
[0036] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.
[0037] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.
[0038] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.
[0039] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.
[0040] Research has revealed the following drawbacks of existing technologies: Traditional friction welding machines typically employ a constant rotation speed, which presents the following defects when welding thin-walled pipes: The constant rotation speed can easily lead to excessive heat input during the friction phase, causing the local temperature of the thin-walled pipe wall to exceed the material's melting point, thus easily leading to pipe melt-through.
[0041] Based on the above research, this disclosure provides a friction welding device for welding thin-walled tubes of accumulators and its anti-melt-through control system. Through the coordinated action of the control module, electromagnetic clutch and infrared thermometer, the rotation speed is automatically adjusted according to the welding temperature, thereby avoiding excessive welding temperature and solving the above problems.
[0042] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.
[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0044] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0045] See Figure 1This disclosure provides a friction welding device for welding thin-walled tubes 300 of an energy storage device, comprising: a pushing mechanism 100, including a servo hydraulic cylinder 110, the piston rod 111 end of the servo hydraulic cylinder 110 being connected to the thin-walled tube 300 via a clamp 200. A driving mechanism 400 is disposed opposite to the pushing mechanism 100, including a motor 410 and a multi-stage gearbox 420, the motor 410 being connected to the input shaft of the multi-stage gearbox 420, and the output shaft 421 of the multi-stage gearbox 420 being connected to the thin-walled tube 300 via the clamp 200. The welding ends of the two thin-walled tubes 300 disposed opposite to each other are coaxially aligned. During welding, the driving mechanism 400 drives one side of the thin-walled tube 300 to rotate, and the pushing mechanism 100 is adapted to push the other side of the thin-walled tube 300 to abut against the opposite thin-walled tube 300, thereby achieving welding through frictional heat generation.
[0046] See also Figure 1 and Figure 2 The multi-stage gearbox 420 is equipped with an electromagnetic clutch for switching the transmission ratio between high and low speeds. An infrared thermometer 500 is also installed above the weld joint of the thin-walled tube 300 to monitor the temperature at the weld joint. Both the infrared thermometer 500 and the electromagnetic clutch are electrically connected to the control module 600. The control module 600 is configured to receive the temperature signal from the infrared thermometer 500 and, when the temperature reaches a set threshold, control the electromagnetic clutch to switch to a low speed. Through these settings, the drive mechanism 400 can automatically control the rotation speed of the thin-walled tube 300; when the infrared thermometer 500 detects that the temperature at the weld joint is higher than the set threshold, it controls the electromagnetic clutch to switch to a low speed, thus automatically reducing the speed of the drive mechanism 400 and preventing localized overheating and melting of the thin-walled tube 300.
[0047] See also Figure 1 In some embodiments, the low-speed output speed of the multi-stage gearbox 420 is 800-1200 rpm, preferably 1000 rpm; and the high-speed output speed is 2000-2500 rpm, preferably 2200 rpm.
[0048] See also Figure 1 In some embodiments, the temperature setting threshold is 80%-90% of the melting point of the thin-walled tube 300 material, preferably 85%.
[0049] See Figure 1 and Figure 2In some embodiments, a cooling nozzle 700 is also provided above the weld joint of the thin-walled tube 300. Both the cooling nozzle 700 and the infrared thermometer 500 are electrically connected to the control module 600. The control module 600 is further configured to control the cooling nozzle 700 to spray cooling medium when the temperature reaches above 95% of the melting point of the thin-walled tube 300 material. If the infrared thermometer 500 malfunctions, the weld interface temperature may rise uncontrollably to above 95% of the material's melting point, posing a risk of the thin-walled tube 300 melting through. The cooling nozzle 700 provides a dual protection mechanism.
[0050] See also Figure 1 In some embodiments, the cooling medium is compressed air or nitrogen.
[0051] See Figure 1 This disclosure also provides an anti-melt-through control system for welding thin-walled tubes 300 of accumulators, including: an infrared thermometer 500 disposed around the welding point of the thin-walled tube 300 for monitoring the temperature of the welding point; an electromagnetic clutch disposed in a multi-stage gearbox 420 of a drive mechanism 400 for switching the transmission ratio between high-speed and low-speed gears; and a control module 600 electrically connected to the infrared thermometer 500 and the electromagnetic clutch, and configured to: receive the temperature signal from the infrared thermometer 500, and control the electromagnetic clutch to switch to the low-speed gear when the temperature reaches a set threshold.
[0052] As a specific implementation method, the infrared thermometer 500 may, but is not limited to, use an Optris CTlaser3M, and the control module 600 may use a Siemens S7-1200.
[0053] The methods described in this embodiment, namely, controlling the electromagnetic clutch to switch to a low speed gear based on the temperature signal from the infrared thermometer 500, and controlling the cooling nozzle 700 to spray cooling medium based on the temperature signal from the infrared thermometer 500, are all existing technologies. This embodiment does not make any substantial improvements to the above methods.
[0054] In summary, the friction welding equipment for welding the thin-walled tube 300 of this accumulator is equipped with an electromagnetic clutch in the drive mechanism 400, which can switch between high-speed and low-speed gears to control the rotation speed of the thin-walled tube 300. When the infrared thermometer 500 detects that the temperature at the welding point is higher than the set threshold, it controls the electromagnetic clutch to switch to the low-speed gear, so that the drive mechanism 400 automatically reduces its speed and avoids local overheating and melting of the thin-walled tube 300.
[0055] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0056] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.
[0057] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.
[0058] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.
[0059] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A friction welding apparatus for welding thin-walled tubes of an accumulator, characterized by, include: The pushing mechanism (100) includes a servo hydraulic cylinder (110), the piston rod (111) end of which is connected to the thin-walled tube (300) via a clamp (200); The drive mechanism (400) includes a motor (410) and a multi-stage gearbox (420). The motor (410) is connected to the input shaft of the multi-stage gearbox (420), and the output shaft (421) of the multi-stage gearbox (420) is connected to the thin-walled tube (300) through a clamp (200). The pushing mechanism (100) and the driving mechanism (400) are arranged opposite to each other so that the welding ends of the two thin-walled tubes (300) are coaxially aligned; The multi-stage gearbox (420) is equipped with an electromagnetic clutch for switching between high-speed and low-speed gears. An infrared thermometer (500) is also provided above the weld of the thin-walled tube (300) to monitor the temperature of the weld. The infrared thermometer (500) and the electromagnetic clutch are electrically connected to the control module (600). The control module (600) is configured to receive the temperature signal from the infrared thermometer (500) and control the electromagnetic clutch to switch to a low speed when the temperature reaches a set threshold.
2. The friction welding equipment as described in claim 1, characterized in that, The low-speed output speed of the multi-stage gearbox (420) is 800-1200 rpm; The output speed of the high-speed mode is 2000-2500 rpm.
3. The friction welding equipment as described in claim 1, characterized in that, The temperature setting threshold is 80%-90% of the melting point of the thin-walled tube (300) material.
4. The friction welding equipment as described in claim 1, characterized in that, A cooling nozzle (700) is also provided above the weld of the thin-walled tube (300), and both the cooling nozzle (700) and the infrared thermometer (500) are electrically connected to the control module (600). The control module (600) is also configured to control the cooling nozzle (700) to spray cooling medium when the temperature reaches more than 95% of the melting point of the thin-walled tube (300) material.
5. The friction welding equipment as described in claim 4, characterized in that, The cooling medium is compressed air or nitrogen.
6. A control system for preventing blow-through in the welding of thin-walled accumulator tubes, characterized by include: An infrared thermometer (500) is placed around the weld joint of the thin-walled tube (300) to monitor the temperature of the weld joint; An electromagnetic clutch is installed in the multi-stage gearbox (420) of the drive mechanism (400) and is used to switch between high speed and low speed. The control module (600) is electrically connected to the infrared thermometer (500) and the electromagnetic clutch, and is configured to: receive the temperature signal from the infrared thermometer (500), and control the electromagnetic clutch to switch to a low speed when the temperature reaches a set threshold.
7. The anti-melt-through control system as described in claim 6, characterized in that, The low-speed output speed of the multi-stage gearbox (420) is 800-1200 rpm; The output speed of the high-speed mode is 2000-2500 rpm.
8. The anti-melt-through control system as described in claim 6, characterized in that, The temperature setting threshold is 80%-90% of the melting point of the thin-walled tube (300) material.
9. The anti-melt-through control system as described in claim 6, characterized in that, The control module (600) is also electrically connected to an infrared thermometer (500) and a cooling nozzle (700), the cooling nozzle (700) being positioned above the weld joint of the thin-walled tube (300); and, The control module (600) is also configured to control the cooling nozzle (700) to spray cooling medium when the temperature reaches more than 95% of the melting point of the thin-walled tube (300) material.
10. The anti-melt-through control system as described in claim 9, characterized in that, The cooling medium is compressed air or nitrogen.