2410 results about "Ultrasonic welding" patented technology

A sonotrode configured for use in an ultrasonic welding system is provided. The sonotrode includes a body portion terminating at a tip portion, the tip portion including a working surface. The working surface defines an aperture configured to hold a conductive pin during an ultrasonic welding process. The working surface also defines a plurality of linear depressions. Each of the plurality of linear depressions follows a path that does not intersect the aperture.

An ultrasonic welding system is provided. The ultrasonic welding system includes a sonotrode configured to ultrasonically weld a conductive pin to a workpiece. The ultrasonic welding system also includes a pin feeding system configured to feed the conductive pin to the sonotrode, the pin feeding system including a pin supply tube.

A conductive pin for ultrasonic welding is provided. The conductive pin includes a body portion. The conductive pin also includes a pin head at one end of the body portion. The pin head defines a bonding surface configured to be ultrasonically welded to a workpiece. The bonding surface includes at least one of (i) a nonplanar surface and (ii) an aperture defined in a central region of the bonding surface.

The invention relates to the technical field of image processing, and discloses an automatic welding method for automobile sound-absorbing cotton. The method comprises the following steps: pretreating a sound-absorbing cotton raw material through a precise cutting system and high-temperature treatment; positioning is conducted through a mechanical arm and visual recognition, and coordinate data are obtained; planning a welding path based on the coordinate data; performing welding by using ultrasonic equipment; evaluating the quality through three-dimensional scanning and acoustic detection; and the defects are accurately repaired, and a finished product assembly is obtained. By integrating precise positioning, intelligent path planning, double-frequency ultrasonic welding, multi-dimensional quality detection and precise defect repairing, full automation and high-quality control of the sound-absorbing cotton welding process are achieved, and the first-pass yield and acoustic performance stability of products are improved.

A lightweight play or training device includes an inflatable bladder and a two-piece molded polymer cover formed by first and second closed-cell foam half-shells fused together (e.g., by ultrasonic welding) along a continuous peripheral seam. The bladder, when unconstrained, is significantly larger than the internal volume of the molded cover so that upon inflation it bunches against the inner surface of the cover, thereby absorbing impact energy and slowing aerodynamic flight. Preferred foams have densities of 20 kg m−3 to 60 kg m−3 and Shore A hardness of 30-60. The device may include an integral inflation tube acting as a one-way valve and an optional elastic tether for solo skills practice. Variants include spherical balls and flying discs, as well as alternative seam geometries and joining techniques.

The invention discloses an ultrasonic welding head, a tab, an electrode assembly, a single battery, a battery and a power utilization device.The ultrasonic welding head comprises a welding head body and first welding teeth, the welding head body is provided with a welding face, the first welding teeth are arranged on the welding face in a protruding mode, and each first welding tooth comprises a plurality of tooth parts; the multiple tooth parts are the first tooth part and the mth tooth part which are sequentially arranged in the protruding direction of the first welding tooth, the nth tooth part is arranged on the end face of the end, away from the welding face, of the (n-1) th tooth part, the end face of the end, away from the welding face, of the (n-1) th tooth part exceeds the nth tooth part, and n is larger than or equal to 2 and smaller than or equal to m. The ultrasonic welding head can reliably weld corresponding parts of the battery monomer, and the service reliability of the battery monomer is improved.

The invention discloses ultrasonic high-speed welding equipment and a welding method.The equipment comprises a rack, an electric control mechanism, an executing mechanism and a monitoring mechanism, and the executing mechanism comprises a first lifting assembly, a linear driving part, a welding executing assembly and a second lifting assembly; the linear driving piece is used for generating pressure for pressing the welding execution assembly on the to-be-welded piece, and the welding execution assembly is used for providing high-frequency vibration to achieve ultrasonic welding; the monitoring mechanism is used for monitoring the pressure of the linear driving part on the welding execution assembly, the pressure of the second lifting assembly on the bottom die, the real-time position of the welding execution assembly and the real-time position of the bottom die. The electric control mechanism is used for controlling the execution mechanism to operate according to a preset program and monitoring data obtained from the monitoring mechanism. According to the scheme, the welding efficiency can be improved, and pseudo soldering is reduced.

The invention relates to the technical field of flexible piezoelectric sensors, and discloses a wide-working-condition multi-dimensional force representation flexible film piezoelectric sensor and a signal analysis method, after a pvdf piezoelectric film is cut in a paper-cut mode, regionalized electrode coating and covering are carried out, and multi-channel signal output is achieved. Therefore, characterization of multi-dimensional force can be realized on one film sensor, and meanwhile, the tension and conformal capability of the sensor are enhanced through the paper-cut design, so that the attachment requirement of a complex surface is met. A multi-layer composite structure is combined and comprises a flexible polymer protection layer and a flexible connection layer, and high sensitivity, excellent tensile property and mechanical durability are achieved through hot pressing and local ultrasonic welding. The sensing capability is enhanced, and the defect of poor tensile property of a traditional PVDF piezoelectric sensor is overcome. The preparation method is simple in process, low in cost and suitable for large-scale industrial production. In addition, the invention provides a deep learning analysis method for multi-channel signals, and classification and nonlinear fitting can be realized.

The invention provides an ultrasonic welding quality control system and method, and relates to the technical field of ultrasonic welding, and the system comprises an acquisition and recognition module which is used for collecting sensor data of welding head displacement, weldment interface temperature, welding head amplitude and welding power in real time in the ultrasonic welding process, identifying a welding head displacement peak value, an interface temperature inflection point and a power fluctuation critical characteristic value; and the parameter extraction module is used for extracting a displacement peak value characteristic value, an interface temperature inflection point characteristic value, a power fluctuation critical characteristic value, a welding head amplitude characteristic value and a welding time characteristic value in the welding process based on the sensor data to form a characteristic parameter set. By means of multi-parameter feature extraction, correlation analysis, dynamic adjustment and closed-loop feedback, accurate control over the welding process is achieved, the welding quality stability is improved, and the rate of unqualified products is reduced.

An ultrasonic welding machine, which is configured as: driving a triple assembly (2) to move in a Z direction by a multi-position cylinder (4) disposed on the ultrasonic welding machine, so as to achieve graded down pressing of a welding head (21) to prevent the workpiece to be welded from damage caused by possible situations where the welding head (21) first moves to a working position while a welding seat (3) has not reached a supporting position, which is due to the inability to strictly control the order of arrival at the working position of the welding head (21) and the welding seat (3) when the welding head (21) and the welding seat (3) move towards the working position simultaneously. An ultrasonic welding method is further related. The welding method using the ultrasonic welding machine significantly improves efficiency while ensuring welding quality.

The invention provides a battery monomer, a battery, a power utilization device, an ultrasonic welding head and an ultrasonic welding device, and belongs to the technical field of batteries. Wherein the battery monomer comprises a shell, a pole and an electrode assembly, the pole is arranged in the shell, the electrode assembly comprises an active material coating part arranged in the shell and a tab part electrically connected with the active material coating part and the pole, the tab part comprises a plurality of tab pieces, and the plurality of tab pieces are stacked and connected to form a furling part; the furling part is provided with a first area and a second area, the compaction degree of the plurality of tab pieces in the first area is greater than that of the plurality of tab pieces in the second area, a connecting part is formed at the position, used for being electrically connected with the pole column, of the furling part, and at least part of the edge of the connecting part on the furling part falls in the first area. According to the battery monomer, the problem of cracks on the edge of the connecting part can be improved, the conductive yield and the connecting strength of the tab part and the pole are improved, and the reliability of the battery monomer is improved.

The invention relates to the technical field of high polymer materials, in particular to a low-warpage PBT / PC composite modified material and a preparation method thereof. The composite material is prepared from the following raw materials: PBT resin, PC resin, a filler, an ester exchange inhibitor, a flexibilizer, a compatilizer, an antioxidant, a lubricant, a flowable agent and glass fibers. The preparation process comprises the steps of resin drying and mixing, additive premixing, melt blending extrusion and the like, is simple and controllable in flow and is suitable for large-scale production. The composite material prepared by the invention has high strength, high toughness, low warping degree and excellent processability, can be used for ultrasonic welding, reduces after-shrinkage of the material, solves the problem of melt cooling film sticking, and meets the requirements of the market on high-precision and high-stability engineering plastics.

The utility model discloses assembling, welding and detecting integrated equipment for an automobile tail lamp. Comprising a control cabinet, a station rotating disc, a tool station, a tin soldering welding machine, a welding head, a lamp shell mirror installing mechanism, a pneumatic clamp, a first air cylinder, a second air cylinder, a first guide rail, a first sliding base, a lamp shell lampshade installing mechanism, a support, a pneumatic suction cup, a third air cylinder, a linear motor, an ultrasonic welding machine, a lightening optometry mechanism, a camera, an air tightness detector, a fourth air cylinder, an L-shaped frame, a marking mechanism and a two-dimensional code marking device. The device comprises a cylinder 5, a screw elevator, a blanking mechanism, a conveyor, a rack and a display. The automobile tail lamp assembling, welding and detecting device is reasonable in design, assembling, welding and detecting of an automobile tail lamp can be efficiently and orderly completed conveniently by arranging a traditional station into the integrated station where the lamp shell, the reflective mirror and the lampshade can be sequentially placed, the assembling, welding and detecting process is high in continuity, the time needed for completing one automobile tail lamp is short, and the finished product quality is high; the problem that a traditional automobile tail lamp assembly line is tedious and complex is solved.

The application discloses a rotary table type ultrasonic welding device, which comprises a rack, a rotary table, a supporting device and an ultrasonic welding device arranged on the periphery of the rotary table. The rotary table is rotatably installed on the rack. The rotary table is provided with supporting bolts protruding from the bottom surface of the rotary table. The supporting device is in abutment with the supporting bolts through liftable supporting pieces. When the ultrasonic welding device is pressed for welding, the mounting seat can be supported by the supporting device, so that the rotary table is prevented from being deformed due to the pressing. The rotary table is provided with a mounting seat. The mounting seat comprises a bottom plate installed by leveling screws. The rotary table and the mounting seat can be kept horizontal through the leveling screws. The mounting seat is further provided with elastic washers. The elastic compression of the elastic washers can ensure that the workpiece can keep the airtightness of welding even if the workpiece is slightly inclined when being pressed.

An ultrasonic welding system is provided. The ultrasonic welding system includes a support structure for supporting a workpiece. The ultrasonic welding system also includes a weld head assembly including an ultrasonic converter carrying a sonotrode. The ultrasonic welding system also includes a conductive pin supply configured to provide a plurality of conductive pins for welding using the sonotrode.

The invention discloses a welding head, a welding device and a welding system, and belongs to the technical field of ultrasonic welding. The welding head is used for welding a battery cell tab and comprises a welding head body and a working face surrounding the rotating axis of the welding head, the working face comprises a welding face and a receding face which are connected, the welding face is in a circular arc shape, and the distance from other areas, except the end, of the receding face to the rotating axis is smaller than the radius of the welding face. Through the arrangement of the welding surface and the avoiding surface, the continuity and the operation efficiency of ultrasonic pre-welding of the battery cell tab are improved, the procedure beat of the whole battery production line is improved, the proportion of a welding print pseudo soldering area on the battery cell tab is reduced, and the welding quality is optimized.

The invention belongs to the technical field of ultrasonic welding, and discloses a resonance bottom die for ultrasonic welding, a resonance bottom die design method and a welding system. The resonance bottom die for ultrasonic welding comprises a bottom die body, the bottom die body is arranged on a workbench of an ultrasonic welding system, and the bottom die body is provided with a welding working face used for bearing a workpiece; the material and the geometric dimension of the bottom die body determine that the natural resonant frequency of the bottom die body is matched with the preset ultrasonic working frequency of the ultrasonic welding system, the bottom die body can generate resonance in the preset direction when being excited by an upper welding head in the ultrasonic welding system, and the welding working face is arranged at the vibration antinode position. According to the resonance bottom die for ultrasonic welding, in the ultrasonic welding process, the bottom die body can generate resonance which is the same as an upper welding head in frequency and opposite to the upper welding head, so that relative movement and friction between workpieces at a welding interface are increased, the welding energy transfer efficiency is improved, and finally the effects of improving the welding quality and improving the welding efficiency are achieved.

The invention belongs to the technical field of thermoplastic composite material ultrasonic welding, and particularly relates to a fabric fiber reinforced thermoplastic composite material energy-conducting-rib-free type continuous ultrasonic welding method which comprises the following steps: S1, cleaning the surface of a to-be-welded part of a fabric fiber reinforced thermoplastic composite material; s2, a workpiece to be welded is fixed to an anvil; s3, selecting an ultrasonic welding head; s4, the initial positions of the pre-pressing structure and the pressure maintaining structure are adjusted; s5, the moving path of the mechanical arm is planned, the posture of the mechanical arm is controlled, and the moving speed of the mechanical arm is set; s6, ultrasonic welding parameters are set; s7, the mechanical arm drives the ultrasonic welding head, the pre-pressing structure and the pressure maintaining structure to move downwards; and S8, the mechanical arm drives the ultrasonic welding head, the pre-pressing structure and the pressure maintaining structure to conduct continuous ultrasonic welding according to the set welding path and welding parameters, and after ultrasonic welding is completed, a power source is turned off. According to the invention, high-quality and high-efficiency connection of the composite material is realized.

The invention discloses rotating disc type ultrasonic welding equipment which comprises a rack, a rotating disc, a supporting device and an ultrasonic welding device arranged on the peripheral side of the rotating disc, the rotating disc is rotatably installed on the rack, and a supporting bolt protruding out of the bottom face of the rotating disc is arranged on the rotating disc. The supporting device abuts against the supporting bolt through a supporting piece capable of ascending and descending, then when the ultrasonic welding device conducts downward pressing welding, the mounting base can be supported through the supporting device, and it is avoided that the rotating disc deforms due to downward pressing; the mounting seat comprises a bottom plate part which is mounted by a leveling screw, so that the turntable and the mounting seat can be kept horizontal through the leveling screw, and meanwhile, an elastic gasket is also arranged on the mounting seat, so that when the mounting seat is pressed downwards, the workpiece can be ensured to keep the welding air tightness even if the workpiece is slightly inclined through elastic compression of the elastic gasket.

An ultrasonic weld / seal-cut system having an ultrasonic cut stack assembly, including an ultrasonic cutting horn with a transducer arranged to impart an ultrasonic energy to the ultrasonic cutting horn (sonotrode) and allow for wider cutting applications while minimizing deflections of the cutting horn under force. The cutting horn has a cutting feature configured to contact a part to be cut and a major surface adjacent to the cutting feature and a booster. The booster can have a generally flat shape and a major surface that is generally coplanar with the major surface of the ultrasonic cutting horn. One or more controllers can be operatively coupled to the ultrasonic cut stack assembly and configured to apply ultrasonic energy through the ultrasonic cut horn via the transducer to cause the cutting feature to move back and forth along its length as the ultrasonic energy is applied by the transducer to the cutting horn. The cutting horn and booster can be a unitary piece, and can be produced by machining a solid plate of metal into the cutting horn with integrated the booster.

The invention relates to the technical field of welding monitoring, and discloses an online monitoring method for the welding quality of a joint of an ultrasonic welding metal sheet, which comprises the following steps: S1, detecting the friction coefficient of a welding interface of the metal sheet in real time through a friction coefficient detection unit; s3, dividing the real-time friction coefficient detected in the step S1 into three stages, namely a pre-welding stage, a welding process stage and a post-welding cooling stage according to the welding process, and S4, performing statistical analysis on the real-time friction coefficient of each stage in the step S3 by adopting an average value and an extreme value, and during calculation, at least obtaining the real-time friction coefficient of each stage during five times of welding. The method has the following advantages and effects that by dynamically monitoring the friction coefficient of the interface of the ultrasonic welding metal sheet in real time, detecting the quality of a welding joint in real time and optimizing welding process parameters in time, the percent of pass of products can be greatly increased, and the operability and accuracy of quality control are remarkably improved.

An ultrasonic welding system is provided. The ultrasonic welding system includes a sonotrode configured to ultrasonically weld a conductive pin to a workpiece. The ultrasonic welding system also includes a pin feeding system configured to feed the conductive pin to the sonotrode, the pin feeding system including a pin supply tube.

The invention discloses a warning lamp and a preparation method thereof, and relates to the technical field of electrical equipment.The preparation method of the warning lamp comprises the steps that a welding head of an ultrasonic welding device is controlled to move to make contact with a second shell; a first welding parameter is obtained, and the welding head is regulated and controlled to act based on the first welding parameter; a monitoring unit is controlled to obtain a machining signal in real time, and the melting state of the welding structure is confirmed based on the machining signal; and under the condition that the welding structure reaches the complete melting state, a second welding parameter is obtained, and the welding head is regulated and controlled to act based on the second welding parameter. According to the technical scheme, sufficient welding machining of the warning lamp shell is achieved, and the production qualification rate and reliability of the warning lamp are improved.

The invention discloses a nerve operation pad annular production line and a production method. The production line comprises a station rotating disc, a non-woven fabric feeding mechanism, a barium wire feeding mechanism, a barium wire welding mechanism, a chemical fiber wire feeding mechanism, a chemical fiber wire welding mechanism and a discharging mechanism, wherein a plurality of material die holders are annularly distributed on the station rotating disc, and the non-woven fabric feeding mechanism, the barium wire feeding mechanism, the barium wire welding mechanism, the chemical fiber wire feeding mechanism, the chemical fiber wire welding mechanism and the discharging mechanism are sequentially arranged in the circumferential direction of the station rotating disc. The rotary disc is driven by a pneumatic indexing head to accurately index, and each station is provided with a rotary pressing air cylinder to realize secondary positioning; non-woven fabric, barium wires and chemical fiber wires are conveyed in a high-precision mode through a closed-loop feeding system composed of a material guide cylinder, a horizontal positioning wheel and a feeding roller, and multi-stage monitoring of a photoelectric sensor and a material sensor is matched. The ultrasonic welding module is adopted to complete compounding of heterogeneous materials, and the negative pressure feeding system is combined to solve the problem of electrostatic excursion of chemical fiber lines. The full-process automatic production is realized, the characteristics of high process integration degree, excellent positioning precision, high quality controllability and the like are realized, and the production efficiency and the product percent of pass are remarkably improved.

The invention discloses a welding method of a resin-based composite material for realizing reinforced fiber connection, and relates to the field of welding methods of resin-based composite materials. The method aims at solving the technical problem that at present, a joint of a resin-based composite material obtained through traditional ultrasonic welding is low in strength. The method comprises the following steps: 1, selecting a joint form and processing a composite material; secondly, the to-be-welded area is heated, the resin matrix of the to-be-welded area is removed, and the reinforced fibers are exposed; thirdly, the reinforced fibers are welded through a horizontal vibration ultrasonic welding method, so that the reinforced fibers are connected; fourthly, after the fibers are connected, resin is poured again in the welding area. According to the invention, the connection of the resin matrix is realized, the connection of the carbon fibers in the resin matrix is also realized, and the obtained joint is high in strength; by means of the method, welding of various composite materials such as carbon fiber / glass fiber and other resin-based composite materials can be achieved. The method is used for welding the reinforced fiber connected resin-based composite material.

The utility model relates to the field of servo ultrasonic welding machines, and discloses a welding head quick replacement device of a servo ultrasonic welding machine, which comprises a base, a welding machine body is arranged on the upper portion of the base, an amplitude-change pole is arranged on the lower portion of the welding machine body, a welding head is arranged on the outer side of the amplitude-change pole, and a quick release mechanism is arranged on the upper portion of the welding head. The quick dismounting mechanism comprises a dismounting assembly and an auxiliary assembly, the dismounting assembly comprises a connecting seat, the connecting seat is fixedly connected to the upper portion of the welding head, and a guide groove is formed in the outer side of the connecting seat. According to the utility model, through the cooperative use of the quick release mechanism and the welding head, when the welding head needs to be replaced, the operation ring slides in the guide groove and drives the limiting ring to rotate, so that the clamping state of the limiting bead and the limiting groove is controlled, and compared with a traditional bolt fastening or threaded groove connection mode, the time for replacing the welding head is saved, the production efficiency is improved, and the production cost is reduced. Meanwhile, abrasion of connecting parts is reduced.

The invention discloses an ultrasonic seam welder for production of a composite current collector, relates to the technical field of ultrasonic welders, and aims to solve the problems that metal foil is not limited and still continues to be subjected to transmission welding after the metal foil deviates in the transmission process to cause errors in the welding position, so that a large number of errors exist in the welding position of the metal foil after welding is completed. The loss of the metal foil is increased, so that through the sliding fit of the top block and the top ring, when the metal foil tends to deviate or incline, the trend is transmitted to the top ring and the top block through the rubber ring and the outer cover wheel, so that the top block tends to expand outwards, and the movement and inclination trend of the metal foil is limited; the expanded jacking block drives the rubber ring to deform, the metal foil between the connecting shafts is clamped, the metal foil cannot continue to be transmitted, and the situation that welding continues after errors occur in the welding position, a large number of errors occur in the welding position of the metal foil after welding is completed, and loss of the metal foil is increased is prevented.

The invention discloses an ultrasonic welding quality online detection system and method, and belongs to the technical field of laser non-contact measurement. According to the invention, the laser vibration measurement probe is rigidly coupled to the welding head to construct a follow-up-common-optical-path measurement unit, so that synchronous acquisition of vibration signals with zero mass loading is realized; further extracting an attenuation section after welding is finished from the signal, and inverting an equivalent modal damping ratio representing an interface energy dissipation state based on an exponential attenuation model; meanwhile, multi-dimensional physical indexes such as an energy transfer efficiency index Itrans and an input stability index Iin are calculated, and in combination with an energy absorption state index, collaborative fusion is carried out through a weighted fusion formula to obtain a comprehensive quality score; and finally, realizing quality attenuation early warning based on time sequence trend analysis of a scoring sequence. On-line sensing of the deep dynamic state in the welding process is achieved, the early defect recognition sensitivity and the system anti-interference capacity are remarkably improved, and the predictive maintenance capacity of quality degradation is achieved.

The invention discloses plastic product ultrasonic welding equipment, and relates to the technical field of plastic ultrasonic welding, the plastic product ultrasonic welding equipment comprises a workbench, the top of the workbench is connected with a welding machine assembly through a lifting module, the welding machine assembly comprises an amplitude-change pole, the upper end of the amplitude-change pole is provided with an energy converter, the top of the workbench is provided with a mold assembly, and the mold assembly is connected with the workbench. The die assembly comprises a hollow lower die and a hollow upper die, and the upper die is fixedly connected to the lower end of the amplitude-change pole. According to the ultrasonic welding equipment for the plastic products, during ultrasonic welding, the lower die and the upper die can be adaptively adjusted according to the surface shape of a workpiece, the workpiece is limited, meanwhile, the workpiece can be subjected to negative pressure adsorption, the ultrasonic welding equipment is more stable and reliable, the dies do not need to be replaced, and the workpiece does not need to be centered; the ultrasonic welding efficiency can be improved; and after ultrasonic welding is completed, the ultrasonic welding strength of the plastic product can be conveniently detected, and the ultrasonic welding quality is guaranteed.

In a method of using ultrasonic welding for fusion bonding of thermoplastic composites, an energy director is formed in place on a first thermoplastic substrate. The energy director can be protrusions arranged in a grid pattern over the entire weld region. The energy director can have protrusions of varying thicknesses to account for unevenness along the weld interface. Forming the energy director can be carried out by placing thermoplastic film on the first thermoplastic substrate, melting the thermoplastic film, and stamping the thermoplastic film with an energy director stamp. After the energy director is formed, the first thermoplastic substrate is ultrasonically welded to a second thermoplastic substrate with the energy director sandwiched between the first and second thermoplastic substrates.