16 results about "NEEDLE GAUGE" patented technology

This invention provides a sealing device and method for a high-speed solid-state NMR rotor. The sealing device includes a first structure, a second structure, a precision needle gauge, a first base, a second base, a sleeve, a sample, a sample loading tool guide rod, a rotor drive cap, and a manual precision vise. The sealing method utilizes a sealing gasket of appropriate thickness, pressed against the inner wall of the rotor by centrifugal force at high speed, sealing the gap between the bottom cap / drive cap at both ends of the rotor and the inner wall of the rotor, thereby preventing external air from contacting the sample powder. This invention significantly improves the stability of the sample during sampling and enables the acquisition of high-resolution solid-state NMR spectra at high speeds. The developed sealing tool can be used in conjunction with the rotor's sample loading tool in the inert atmosphere of a glove box, achieving the processing and sealing of solid-state NMR samples in one step. The method is simple to operate, highly practical, and suitable for various dehydrated samples and solid samples sensitive to water / oxygen / air.

The utility model discloses an MEMS shock-resistant assembly structure, which comprises a bottom box, a mounting plate, an upper cover and four cushions, the bottom box comprises a bottom plate and four side plates arranged on the bottom box, each cushion comprises a lower layer cushion, an upper layer cushion corresponding to the lower layer cushion, a first side cushion and a second side cushion, and the first side cushion and the second side cushion are connected with the upper layer cushion and the lower layer cushion. The upper-layer pad, the lower-layer pad, the first side pad and the second side pad form a corner wrapping groove for wrapping corners of the mounting plate, the upper cover comprises a cover plate and four supporting columns arranged at the lower ends of the four corners of the cover plate respectively, the supporting columns are used for pressing the upper-layer pad, and after the buffering pad and the mounting plate are assembled, the outer side of the buffering pad abuts against the inner side of the side plate. The pin gauge detection device has the advantages that the pin gauge can be effectively prevented from being damaged during detection, the two ends of the pin gauge are clamped through the upper clamping block and the lower clamping block after unqualified products are detected, vibration of the pin gauge is reduced, and it is guaranteed that the pin gauge can be aligned and reset in time.

The utility model discloses a PCB (printed circuit board) warpage measuring tool, which relates to the technical field of PCB detection, and comprises a measuring tool, the measuring tool is a right triangle plate, the included angle between the long straight edge and the bevel edge of the measuring tool is 10 degrees, the long straight edge of the measuring tool is provided with scale marks, and the bevel edge of the measuring tool is detachably provided with a support assembly. According to the utility model, the measuring tool is a right triangle with the angle of 10 degrees, the long straight edge of the measuring tool is provided with the scale marks, during measurement, the hypotenuse of the triangle is taken as the bottom, the measuring tool is inserted into the warping area, the scale of the long straight edge is read and recorded after insertion, and the warping value is obtained by multiplying the scale by sin 10 degrees, so that the measuring tool is simple and convenient to operate and does not need to be like a feeler gauge and a needle gauge; and different specifications need to be used for comparison one by one, so that the data measurement efficiency can be effectively improved.

This utility model discloses a multi-segment gradient telescopic needle gauge, including a housing handle with a blind hole at one end, within which a needle gauge assembly is housed. The needle gauge assembly includes an outer tube, inside which multiple inner tubes are sequentially fitted. The inner tubes can extend and retract axially within the outer tube, and the outer tube can also extend and retract axially within the housing handle. A first and second sliding groove are axially offset on the side wall of the housing handle, and a connecting groove is provided on the side wall of the housing handle. A locking block is provided on the side wall of the outer tube, with one end extending out of the housing handle. The locking block can slide within the first and second sliding grooves, and can abut against the end faces of the first and second sliding grooves respectively. A single needle gauge in this utility model can cover multiple sizes, reducing changeover time and making it easy to carry. Furthermore, it eliminates the need for external tools, allowing for size switching with one hand, thus improving operational convenience.

The utility model relates to the technical field of PCB processing, and discloses a device for removing copper nodules in PCB holes, which comprises a supporting bottom plate, a supporting top plate, a needle gauge assembly and a positioning assembly, the supporting top plate is arranged above the supporting bottom plate in parallel and is connected with the supporting bottom plate, a first end of the needle gauge assembly is fixedly connected with the supporting bottom plate, and a second end of the needle gauge assembly is fixedly connected with the positioning assembly. The second end of the needle gauge assembly extends out of the upper surface of the supporting top plate in the longitudinal direction, the first end of the positioning assembly is fixedly connected with the supporting bottom plate, and the second end of the positioning assembly extends out of the upper surface of the supporting top plate in the longitudinal direction. According to the device provided by the utility model, the needle gauge assembly and the positioning assembly are installed and fixed through the supporting bottom plate and the supporting top plate, the PCB is fixed and positioned through the positioning assembly, and all copper plug holes in the PCB are detected and repaired at a time through the needle gauge assembly. Therefore, the copper nodules in all the micropores in the PCB can be removed at a time, and the removal efficiency and quality of the copper nodules in the micropores are improved.

The utility model provides an automobile seat back plate and seat framework matching degree testing fixture, which comprises a mounting rack, a mounting plate arranged on the surface of the mounting rack, a fixing rod connected with the seat back plate, a buckle and a plug-in type connecting structure arranged on one side of the mounting plate, and a seat framework periphery simulation member and an angle adjustment simulation member for simulating the seat framework. The mounting plate is further detachably provided with a needle gauge handle through a clamping base, and the needle gauge handle is used for confirming the matching degree of the needle gauge handle along the gap between the seat back plate and the two imitation pieces. In order to enable the seat back plate to be installed on the testing fixture more stably, a limiting block and a first spring are further arranged at the position of the buckle, the buckle and the limiting block are tensioned through tension by the first spring, and an adjusting rod is fixedly arranged on the buckle through the connecting frame. And the buckle and the seat back plate can relatively shake to realize fine adjustment action by lightly pushing the adjusting rod. The device is simple in structure, can efficiently fix the seat back plate, and achieves the rapid detection of the seat back plate.

The utility model belongs to the technical field of lockstitch sewing machines, and particularly relates to a one-to-two mechanism of a lockstitch sewing machine, which comprises a machine body, a stitch length swing seat and a presser foot lifting upper lever are respectively and rotatably arranged in the machine body, a stepping motor is mounted on the side surface of the machine body, a main shaft is arranged in the stepping motor, and a stitch length adjusting cam and a presser foot lifting cam are respectively mounted on the main shaft; a stitch length connecting rod is arranged on one side of the stitch length adjusting cam, a first driving part for pushing the stitch length adjusting cam is formed on the stitch length connecting rod, one end of the stitch length connecting rod is hinged to the machine body, a swing seat connecting rod is hinged to the other end of the stitch length connecting rod, and the other end of the swing seat connecting rod is hinged to the stitch length swing seat; by means of the design of the two cams, the presser foot lifting mechanism can respectively drive the presser foot lifting mechanism to act or control the needle pitch, the effect of one-to-two is achieved, the structure of parts is simple, and the machining cost is low.

The utility model relates to the technical field of tool clamps, and discloses a pin gauge clamping tool for rapid inspection of hole size, which comprises an upper clamping plate, the rear end of the upper clamping plate is detachably connected with a lower clamping plate, a hand-screwing bolt is arranged at the through hole of the upper clamping plate and the lower clamping plate, the external of the hand-screwing bolt is in threaded connection with an embedded nut, and the embedded nut is in threaded connection with the lower clamping plate. Needle gauge grooves are formed in the two ends of the sides, close to each other, of the upper clamping plate and the lower clamping plate, needle gauges are placed on the inner walls of the two needle gauge grooves, a butt joint assembly is arranged on the sides, close to each other, of the upper clamping plate and the lower clamping plate, and the butt joint assembly comprises two positioning pin columns; the two positioning pin columns are fixedly connected to the two sides of the rear end of the upper clamping plate respectively. According to the utility model, through the cooperation of the hand-screwed M6 bolt and the M6 hexagon nut, the needle gauge can be rapidly installed and replaced, rapid positioning is realized by combining the automatic positioning pin column, and compared with a traditional hand-held needle gauge detection mode, the detection efficiency is greatly improved.

The present disclosure relates to an improved spinal needle apparatus 10 comprising a stylet assembly 12 including a stylet hub 14 and a stylet 16; a needle assembly 18 including a needle hub 20, a housing 22 and a hollow needle 24. The apparatus is configured to enhance precision and safety during spinal procedures, with features such as an ergonomic stylet hub 14, a secure pressure fit connection between the stylet hub 14 and needle hub 20, and a tube insert 48 accommodating various needle gauges. The apparatus facilitates accurate needle placement and verification of cerebrospinal fluid return, improving outcomes in lumbar punctures and spinal anesthesia.

The invention relates to a single-needle conduction detection device and method for a vertical probe card, and the device comprises a pedestal, an XY moving sliding table, a U-shaped support, a linear guide rail, a differential measuring head, an extension spring, a sliding block, a spherical hinge, a needle gauge, and a test pressing needle, the XY moving sliding table is disposed on the pedestal, and the U-shaped support is disposed on the XY moving sliding table; a pair of linear guide rails is symmetrically arranged on the inner side of the U-shaped support, and the two sides of the sliding block are slidably connected with the two linear guide rails correspondingly. The extension spring is connected between the sliding block and the upper top face of the U-shaped support, the upper surface of the sliding block is attached to the bottom of the differential measuring head all the time under the tension effect of the extension spring, and the top of the differential measuring head penetrates through the upper top face of the U-shaped support and is connected with the U-shaped support. The front end of the needle gauge clamps the test pressing needle, and the rear end of the needle gauge is hinged to the sliding block through the spherical hinge. And a lever arm of the pin gauge is electrically connected with the probe of the universal meter. According to the invention, handheld operation is replaced by mechanical clamping, multi-dimensional accurate adjustment is combined, probe damage can be avoided, and the measurement stability and precision are improved.

The utility model discloses a flat knitting machine needle bed structure capable of adjusting the position of a knitting needle, relates to the technical field of flat knitting machines, and aims to provide a flat knitting machine needle bed structure capable of conveniently adjusting the position of the knitting needle, which comprises a needle plate, a plurality of mounting seats and a limit seat, the limiting seat is provided with a plurality of limiting grooves for limiting the mounting seat, the mounting seat is provided with a needle groove for placing a knitting needle and is used for fixing the knitting needle, the mounting seat is fixed in the sliding groove and the limiting grooves, and when the position of the knitting needle needs to be changed, the limiting seat is detached from the needle plate, and the knitting needle can be replaced according to requirements. The limiting seats with the spacing between every two adjacent limiting grooves being the same as the needed needle pitch are selected and installed on the needle plate, and in the installation process, the multiple installation seats are matched with the limiting grooves respectively, so that the position of the knitting needle can be adjusted.

The present application relates to a kind of device and use method suitable for optical lens adhesive layer thickness control, its device includes base, clamping slot and recess;The clamping slot is arranged on the base and is used to position lens holder, the lens holder is equipped with multiple bosses, glue is applied on the boss to adhere optical lens;Multiple recesses are provided, multiple the recesses are arranged on the base and correspond to the position at the outside of the clamping slot, and the bottom of the recess is flush with the end surface of the lens holder, and needle gauge is respectively placed in the recess, one end of the needle gauge is on the lens holder and corresponds the position between adjacent two bosses.The beneficial effects of the present application are: according to the thickness requirement, adjust the processing size, achieve arbitrary adhesive layer thickness control.

A system, apparatus, and method for forming tufted products may include a tufting machine for forming patterned tufted products, such as carpets, carpets, and artificial grass or turf products, in which indicia of other designs are integrated, including yarns of multiple colors. The tufting machine may include a series of hollow needles arranged at a needle gauge pitch along a needle bar, and may receive a series of yarns of different colors and / or types from a yarn feed system. A yarn selection system may be controlled to selectively block or retract yarn from the needle. The needle reciprocates into and out of the backing to deliver a series of yarns into the backing and may be engaged by a corresponding cutter to form a yarn cluster.

The utility model discloses a pin gauge detection device with a transmission function, and belongs to the technical field of pin gauge detection. The pin gauge detection device with the transmission function comprises a bottom plate and a laser measurement mechanism, a transmission frame is installed at the top end of the bottom plate, a detection opening is formed in the middle of the transmission frame, the laser measurement mechanism is located on one side of the detection opening, the bottom end of the laser measurement mechanism is fixedly connected with the top end of the bottom plate, and a feeding frame is arranged on one side of the transmission frame. The conveying mechanism comprises a frame, a threaded rod is installed on the inner side of the frame, the outer side of the threaded rod is sleeved with a movable block, a connecting frame is installed at the top end of the movable block, and a material pushing plate is arranged at the top end of the conveying frame. According to the automatic pin gauge conveying device, the automatic pin gauge conveying function can be effectively achieved, the detection convenience is improved, and the automatic pin gauge conveying device has high practical value.

The utility model relates to the technical field of pin test, and provides a watertight connector jack plugging force test special tool, which comprises a first balancing weight, a through hole, a groove, a pin gauge, a positioning device, a jack and a second balancing weight, the through hole is arranged on the first balancing weight in a penetrating manner, the middle of the through hole is circular, the two sides of the through hole are U-shaped, and the pin gauge is arranged in the groove. The needle gauge penetrates through the through hole in the first balancing weight and the second balancing weight, and the groove is formed in the bottom of the first balancing weight; the pin gauge comprises a supporting part, a column body, a clamping part and a limiting column, the supporting part, the column body and the clamping part are connected in sequence, the limiting column is arranged on the column body, the tool can automatically take out and connect the pin gauge by arranging the limiting column and the limiting device, and the problem that in a traditional testing method, due to interference fit between the pin gauge and a first balancing weight, the pin gauge is damaged is solved. And the problem of abrasion of the first balancing weight caused by repeated clamping is solved.

The invention discloses a radio frequency insulator sintering coaxiality guaranteeing method, which comprises the following steps of: enabling a standard pin gauge to pass through a positioning bracket and be inserted into a sintering seat, and ensuring that no gap exists between the pin gauge and a central hole of the positioning bracket and a sintering mounting hole in the sintering seat; aligning the central hole of the positioning bracket and the sintering mounting hole of the sintering seat, and fastening after a fastener screw is mounted at the rear end, so as to ensure the coaxiality of the central hole of the positioning bracket and the sintering mounting hole of the sintering seat; pulling out the standard needle gauge; the radio frequency insulator and the positioning ejector pin are installed in the positioning support, the anti-rotation pin is installed on the positioning ejector pin, the anti-rotation pin is inserted into the guide groove of the positioning support in an aligned mode, and the positioning ejector pin is prevented from rotating when installed. The method for ensuring that the center hole and the sintering mounting hole of the positioning bracket are coaxial by adopting the standard needle gauge is effective and practical; the force adjusting nut can effectively adjust the elastic force of the compression spring so as to prevent the ejector pin from damaging the insulator and have enough force to press the radio frequency insulator into the sintering mounting hole.