41 results about "Tubular linear motor" patented technology

An object is to provide a drive apparatus for an injection molding machine which can generate a large thrust force and can provide short-cycled continuous drive. The drive apparatus includes a housing (11); a tubular linear motor (14) including a movable element (12) disposed within the housing (11) in a manner capable of advancing and retreating, and a stationary element (13) attached to the housing (11), the linear motor (14) serving as a first drive section; a member-to-be-driven (15) caused to advance and retreat together with the movable element (12); and a second drive section attached to the housing (11) and disposed such that at least a portion of the second drive section overlaps the linear motor (14) along the axial direction. By merely a slight increase in a radial dimension, the area of a permanent magnet (23) of the movable element (12) can be sufficiently increased, and the capacity of the linear motor (14) can be increased.

A conveyor switch for a conveyor track comprising a tubular linear induction motor as the switch drive. A switch tongue is adapted to be pivoted between first and second positions on the conveyor track and has a driving arm extending from one end thereof. The switch drive is operatively connected to the driving arm for driving the switch tongue, wherein the switch tongue is adapted to direct a moving conveyor component between first and second paths of travel on the conveyor track. Various means are provided to account for the linear movement of the switch drive in relation to the arcuate movement of the switch tongue. The switch assembly is especially adapted for switches in power and free conveyor systems.

The invention relates to a high-thrust tubular linear motor which comprises a stator shell, a stator and a rotor. The stator is coaxially and fixedly mounted in the stator shell, the rotor is coaxially and slidably mounted in an inner cavity of the stator, the stator comprises silicon steel sheets and windings which are arranged at intervals and fixedly mounted on the stator shell, the rotor comprises a rotor shaft, permanent magnets and magnetic conduction rings, and the permanent magnets and the magnetic conduction rings are arranged at intervals on the rotor shaft. The high-thrust tubular linear motor is characterized in that the rotor shaft is made of hollow soft magnetic materials, a copper tube is coaxially sleeved outside the rotor, the windings and the silicon steel sheets are fixedly mounted at intervals to form the stator, and the windings and the silicon steel sheets correspond to the permanent magnets and the magnetic conduction rings of the rotor. The high-thrust tubular linear motor is ingenious in design, reasonable in structure, large in starting force, fine in tightness and reliable in operation.

A motor includes a position-sensing magnetostrictive element that extends along a stator bore. A slider slides in the stator bore and includes a stack of motor magnets. The stack includes a first stack end that provides a magnetic field pattern that magnetizes a region of the magnetostrictive element. The motor includes shield elements such as a non-magnetic shield tube and a magnetic flux diverter.

The invention relates to a function module of the NC machine tool driven by a linear motor, which is characterized in that: the invention comprises two groups of linear driving modules, a moving module of the cutter platform, two groups of connecting rod parts; the function module is a symmetrical structure of the linear moving axis of the cutter platform; the linear driving modules are respectively arranged at two sides of the moving module of the cutter platform, and are respectively connected with the moving module of the cutter platform by the connecting rod parts; each group of the linear driving module is a linear feeding module driven by the linear motor, and the linear moving axis is in parallel to the linear moving axis of the moving module of the cutter platform. The NC machine tool function module has the advantages of adopting parallel driving of the double linear motor, achieving the linear movement and deflecting movement of the cutter platform, good dynamic performance, small mechanical inertia and big rigidity.

The invention relates to a six-freedom-degree parallel machine arm driven by tubular linear motors and a control method of the six-freedom-degree parallel machine arm. The parallel machine arm comprises a fixed platform, a movable platform, upper limiting photoelectric sensors, lower limiting photoelectric sensors, grating ruler sensors and parallel controllers. The multiple tubular linear motorsare evenly distributed between the fixed platform and the movable platform. Each tubular linear motor comprises an outer circular pipe and a drive shaft, wherein the outer circular pipe is internallyprovided with a motion cavity and a drive cavity which are in communication in the axial direction, the diameter of the motion cavity is larger than that of the drive cavity, the upper end, stretchinginto the motion cavity, of the drive shaft is provided with a limiting block, and the corresponding upper limiting photoelectric sensor and the corresponding lower limiting photoelectric sensor are correspondingly arranged at the two ends of the drive cavity. The grating ruler sensors are arranged between motor stator windings and the drive shafts. The parallel controllers are connected with theupper limiting photoelectric sensors, the lower limiting photoelectric sensors and the grating ruler sensors correspondingly and connected with the motor stator windings through motor drivers. Compared with the prior art, the six-freedom-degree parallel machine arm has the beneficial effects of being small in weight, small in size, high in motion speed and efficiency and the like.

The invention provides a primary wind speed leveling and automatic measuring device. The device comprises a flue, a pitot tube, a tubular linear motor, an automatic controller and a differential pressure transmitter. According to the primary wind speed leveling and automatic measuring device, the primary wind speed can be automatically and accurately measured, and the workload is greatly reduced.The human error is reduced and the test work can be completed by one person. The work intensity of the test personnel is greatly reduced. An additional positioning ruler is not needed, and the automatic positioning of the pitot tube is achieved through a built-in positioning device of the tubular linear motor. The positioning precision is high, and the human error caused during the measurement ofa handheld ruler is avoided. The measurement accuracy is improved. The wind speed of each primary wind pipe of the same-layer combustor can be measured at the same time, and the measurement time is greatly shortened. The automatic data recording, the wireless data transmission and the control of the primary wind speed leveling test can be realized. The real-time adjustment of the test working condition can be realized.

The invention discloses a flat linear motor, which comprises a housing. The housing is internally provided with a stator, a rotor and a single shaft. The single shaft passes through the center of the rotor. The stator comprises a driving coil, wherein the driving coil is wound around the rotor. At least two pairs of magnets are arranged between the stator and the rotor. Each pair of magnets comprise a drive positioning magnet and a positioning magnet, wherein the drive positioning magnet is arranged on the rotor; the drive positioning magnet is arranged opposite to the positioning magnet; and the positioning magnet is fixed corresponding to the housing. When powered on, the driving coil drives the rotor provided with the drive positioning magnet to be in reciprocating rectilinear movement along the single shaft; and meanwhile, the attraction force between the drive positioning magnet and the positioning magnet enables the rotor to keep horizontal in the same horizontal plane. The drive positioning magnet integrates functions of driving the rotor and keeping balance of the rotor, thereby greatly simplifying overall structure of the linear motor, and facilitating reducing the size of the linear motor.

The invention relates to a high-speed and high-precision micro-punching drive system based on double linear motors, which relates to a high-speed and high-precision micro-punching forming drive device for micro parts. The invention can solve the problem that the driving device of the traditional forming equipment cannot satisfy the microplastic forming of parts. The two frames (2) are fixedly connected to the left and right ends of the base (1), the two brackets (3) are fixedly connected to the two frames (2), and the slider (8) is installed between the two brackets (3). Between, the front and rear ends of the slider (8) are symmetrically provided with a linear motor (4), the primary (14) of the linear motor (4) is fixedly connected with the support (3), and the secondary (13) of the linear motor (4) Fixedly connected with the slide block (8), four guide rails (5) are fixedly installed on the slide block (8), and the guide rail (5) slides and cooperates with the guide rail chute (11) of the guide rail slider (6), and the guide rail slide block (6 ) is fixedly connected with the bracket (3), the air brake (7) fixedly connected with the bracket (3) is arranged directly above the four guide rails (5), the grating scale (9) is fixedly mounted on the slide block (8), and the grating scale The probe (10) is set close to the grating ruler (9) and fixed on the frame (2). The invention can realize low-cost, large-volume microplastic parts forming.

The invention discloses a wave power generation system based on the magnetic gear speedup effect and a designing method of the wave power generation system. The wave power generation system comprisesa tubular linear motor, an outer float buoy and an inner float buoy; the tubular linear motor comprises a primary part and a secondary part, and a gas gap is formed between the primary part and the secondary part; the outer float buoy is connected outside the primary part in a sleeving mode, and the inner float buoy is arranged above the secondary part and is rigidly connected with the secondary part; by adjusting the counterweight of the outer float buoy, the vibration frequency and moving speed of the outer float buoy are close to or equal to the vibration frequency and moving speed of the ocean wave; and by adjusting the draught depth of the inner float buoy, the oscillation period of the inner float buoy is kept away from the oscillation period of the ocean wave. The wave power generation system has the beneficial effects that the tubular linear motor based on the magnetic gear speedup effect is combined with the wave power generation system, the shortcomings of low efficiency of wave power generation and low power generation cost performance are effectively overcome, and an efficient and accurate analytical calculation method is provided for the design of the systems.

The tubular linear motor includes an armature having a coil and a magnetic exciter having a permanent magnet provided to face the coil. The armature has a yoke that blocks a magnetic flux, teeth that partition a slot for storing the coil, and the coil that is arranged to extend over the teeth from an inner side of the slot toward the magnetic exciter while a mechanical gap is reserved between the magnetic exciter and the coil. The magnetic exciter has a plurality of permanent magnets by interposing a soft magnetic body.

The invention discloses a sprayer assembly taking and clamping device for irrigator production, and belongs to the technical field of irrigator machining. The sprayer assembly taking and clamping device comprises a conveying belt, and a nozzle discharging device, a connecting base discharging device and a tubular linear motor are sequentially arranged above the conveying belt. A clamping device is connected to a rotor of the tubular linear motor. A protruding limiting belt is arranged on the surface of the conveying belt, and paired nozzle limiting grooves and connecting base limiting grooves are formed in the surface of the limiting belt in an array mode. The nozzle discharging device comprises a nozzle storage box, a nozzle feeding port is formed in the top of the nozzle storage box, a nozzle discharging channel with an opening in the bottom end is formed in the lower portion of the nozzle storage box, and a first discharging conveying belt is arranged in the nozzle discharging channel. The connecting base discharging device comprises a connecting base storage box, a connecting base feeding port is formed in the top of the connecting base storage box, a connecting base discharging channel with an opening in the bottom end is formed in the lower portion of the connecting base storage box, and a second discharging conveying belt is arranged in the connecting base discharging channel. The clamping device comprises a driving gear, and a rotatable clamp is arranged below the driving gear.

The invention discloses a pressing seat assembly assembling device for flusher automatic production, and belongs to the technical field of flusher machining. The pressing seat assembly assembling device comprises a supporting table supported by a first supporting column, wherein a pressing seat clamp is movably arranged on the supporting table, first tubular linear motors are symmetrically arranged on the supporting table to drive the pressing seat clamp to translate, a liftable bottle body clamp is arranged below the supporting table, the bottle body clamp is driven by a vertically arranged second tubular linear motor to ascend and descend, a feeding conveying belt and a discharging conveying belt are arranged at the tail end of the supporting table, the discharging conveying belt is located above the feeding conveying belt, and the discharging conveying belt and the feeding conveying belt are supported by second supporting columns; the pressing seat clamp comprises a mold closing clamp; the mold closing clamp is driven by first tubular linear motors on two sides to translate; a notch is formed in the tail end of the supporting table, a clamping piece capable of ascending, descending and rotating is arranged above the notch, and the clamping piece clamps the mold closing clamp and then descends and rotates to screw a bottle cap of the flusher to a bottle body.