37results about How to "Consistent tension" patented technology

The invention relates to the technical field of fabric performance detection, and mainly describes a fabric performance detection device for shirt fabric. Comprising a base, the base is fixedly connected with a vertically-distributed electric push rod, the telescopic end of the vertically-distributed electric push rod is fixedly connected with a friction disc and a fixing frame, the friction disc and the fixing frame are both in sliding connection with the base, and the fixing frame is fixedly connected with a first elastic push rod; the telescopic end of the first elastic push rod is fixedly connected with a fixing table, the base is fixedly connected with a second elastic push rod, the fixing frame is fixedly connected with an adjusting cylinder, and the base is rotationally connected with a reciprocating lead screw. The reciprocating lead screw drives the telescopic end of the second elastic push rod to do linear reciprocating motion, and then the fitting degree of the friction disc and the fabric is periodically changed, so that friction of different degrees between the fabric and an external article in actual life is simulated, and the accuracy of a fabric pilling test is improved.

The invention discloses knitted fabric wear resistance detection equipment, and relates to the technical field of knitted fabric wear resistance detection. The knitted fabric wear resistance detection equipment comprises a processing table, a placement seat fixedly connected to the upper end face of the processing table and an L-shaped frame fixedly connected to the middle of the upper end face of the processing table, the lower end face of the transverse section of the L-shaped frame is slidably connected with a mounting block through an electric telescopic rod, and a transverse moving part is used for driving a multi-gear adjustable grinding measuring head to transversely move and rotate at the same time; the friction coefficient of the outer portion of the friction roller is automatically adjusted through contact of the trapezoid strip plates and the top columns, the multi-gear adjustable friction effect is achieved, meanwhile, the friction coefficient of the outer portion of the friction roller is adjusted through combination of the shaft rod and the two push rods, and the friction coefficient of the outer portion of the friction roller is adjusted through the combination of the shaft rod and the two push rods. The clamping and tensioning operation of the knitted fabric sample is automatically completed, the tensioning degree of the fabric in each test is ensured to be consistent, and the reliability and consistency of the test are improved.

The utility model discloses a cotton yarn fixed-distance cutting device, which relates to the field of cotton yarn cutting and comprises an operation table, a connecting plate is fixed at the edge of the upper end of the operation table, a threaded column is fixedly connected to one side of the connecting plate, a guide groove is formed in the inner wall of the connecting plate, and a guide rod is slidably connected into the guide groove. A pressing plate is fixedly connected to one side of the guide rod, and a short rod is fixedly connected to the upper end of the pressing plate; the cotton yarn cutting device has the advantages that the position of the pressing plate can be adjusted through the threaded sleeve, the clamping ring, the clamping ring, the threaded column and the like, then cotton yarn to be cut can be fixed, it is guaranteed that the position and tension of the cotton yarn are kept consistent in the cutting process, and meanwhile the cutting precision of the device can be improved; the cutting knife can be assembled and disassembled through cooperation of the clamping plate, the telescopic rod and the spring with the fixing seat and the clamping hole, so that the cutting knife can be replaced when being damaged, and meanwhile, the replacement difficulty can be reduced.

The utility model discloses a steel wire rope winding device, which relates to the technical field of steel wire rope production and comprises a base, a mounting plate fixedly arranged on the base, a rope reel shaft rotatably arranged on one side of the mounting plate, and a pair of upright posts fixedly arranged on one side of the rope reel shaft on the base. A pair of fixed pulleys used for winding a steel wire rope are rotationally installed at the top ends of the pair of stand columns, a movable pulley capable of being hung on the steel wire rope is arranged between the pair of stand columns, a C-shaped frame is rotationally connected to the center of the movable pulley, a balancing weight is installed at the bottom of the C-shaped frame, and a cross beam is fixedly arranged below the position between the pair of stand columns. According to the utility model, the steel wire rope with partial length can be stored or released between the pair of upright posts through the pair of fixed pulleys and the movable pulley, so that compensation is realized when the winding speed of the steel wire rope is different from the discharging speed of the steel wire rope.

The invention relates to the technical field of winding devices, and in particular to an induction coil winding device, comprising a winding ring, a pay-off shaft, a magnetic ring, a tensioning part and a locking part. The winding ring is rotatably arranged around a first preset axis, the pay-off shaft is rotatably arranged on the winding ring, and there is friction between the pay-off shaft and the winding ring; the magnetic ring is rotatably arranged around a second preset axis, the tensioning part comprises two rotating wheels, the two rotating wheels can approach or move away from each other on a fixed plate, and the locking part comprises two fixed wheels, the two fixed wheels can also approach or move away from each other on the fixed plate; the electric wire on the pay-off shaft first passes through between the two fixed wheels, and then passes around the two rotating wheels and is wound around the magnetic ring. When the distance between the tensioning mechanism and the magnetic ring changes from far to near, the two rotating wheels move away from each other and the two fixed wheels approach each other, the two fixed wheels can clamp the electric wire between them, and the electric wire between the rotating wheel and the magnetic ring moves between the two rotating wheels, and the electric wire between the rotating wheel and the magnetic ring is in a tensioned state.

The utility model relates to the technical field of spinning frames, and discloses a spinning frame for spinning production, which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a support column, the upper surface of the support column is fixedly connected with a motor, the output end of the motor is fixedly connected with a turntable, and the outer wall of the turntable is fixedly connected with a connecting plate. A connecting shaft is fixedly connected to the interior of the connecting plate, a gear is fixedly connected to one end of the connecting shaft, supporting legs are fixedly connected to the upper surface of the bottom plate, a tooth frame is slidably connected to the inner walls of the supporting legs, and springs are fixedly connected to the upper surface of the bottom plate. The motor drives the rotating disc to rotate, the rotating disc drives the connecting plate to rotate, the connecting plate drives the gear to rotate, the gear drives the tooth frame to slide, and the tooth frame drives the support to ascend and descend, so that the effect that the positions and tension of textiles in different working procedures are kept consistent can be achieved, and the quality stability and consistency of products are ensured.

The utility model provides a kind of pulling device for endoscopic surgery, it includes connecting piece, and multiple pulling rings fixed on the connecting piece, multiple the pulling ring is sequentially spaced along the length direction of the connecting piece, and the intersection of adjacent two the pulling ring and the included angle is 72 °-120 °;The material of the connecting piece is inelastic material, and the material of the pulling ring is elastic material.The pulling ring of the present application is suitable for endoscopic dissection surgery, cooperates tissue clamp, according to different needs, pulls open mucosa, improves surgical field of view, and the number of tissue clamp can be reduced, the operation time is reduced, and the operation cost is saved.

The utility model belongs to the technical field of photoelectricity, and discloses an optical cable arranging device, which is characterized in that through the design of a gear and a rack with a locking mechanism, the rack can drive the gear to rotate to tension a clockwork spring during wiring, and after wiring, the meshing part of the rack and the gear is loosened to release the clockwork spring, so that a wire rod is tensioned; therefore, the tension degree of the optical cable every time can be ensured to be consistent, the knotting and winding phenomena are avoided, the cable can be loosened through reverse operation when the cable needs to be extracted during maintenance, the wiring and maintenance efficiency is improved, and the device is suitable for segmented popularization and application in an optical cable laying project in a city.

The utility model discloses a vacuum box sampler of accurate control flow belongs to gas sampling technical field, including vacuum box, the inside bottom wall fixed mounting of vacuum box has extrusion subassembly, one side of vacuum box is provided with round slot, the inside fixed connection of round slot has air inlet component, through setting extrusion subassembly, make the clamping plate relative movement to the gas bag is clamped, and utilize pressure sensor monitoring the tension of gas bag expansion time to dynamic adjustment clamping plate extrusion force to gas bag, can ensure that the tension that gas bag produced in the inflation process keeps consistent, guarantees the stability of gas flow, and then improves the accuracy and reliability of sampling process to effectively avoid the gas flow fluctuation caused by gas bag tension change, ensure that the real reflection of sampling result, through setting up air inlet component, rotates first connecting head and can realize its quick separation with second connecting head, and the operation is simple and convenient, and the use is convenient.

A fertilizing device is installed behind a chassis, the fertilizing device comprises a fertilizing support, a fertilizing mechanism is installed on the fertilizing support, the two ends of two lifting connecting rods are connected with the fertilizing support and the chassis respectively, and the two lifting connecting rods, the chassis and the fertilizing support form a parallelogram mechanism; two ends of the lifting cylinder are respectively connected with the fertilizing bracket and the chassis; a pulley block and a sliding frame are mounted on the chassis, the sliding frame is mounted on the pulley block, a fertilizing box is mounted on the sliding frame, and a conveying pipe is connected between the fertilizing box and the fertilizing mechanism; a pull rod is mounted on the fertilization bracket and is connected with the sliding frame; the lifting oil cylinder drives the fertilizing support to lift so as to drive the fertilizing box to move back and forth, and the conveying pipe is always in a tensioned state. The lifting oil cylinder drives the fertilization support to lift, so that the fertilization box is driven to move front and back, the conveying pipe is always in a tensioned state, and the problems of fertilizer blockage, unsmooth fertilization and the like caused by loosening of the conveying pipe are solved.

The utility model relates to the field of warping machines, in particular to an adjustable feeding mechanism of a warping machine. The technical problems that in the using process of a discharging mechanism, due to the fact that warps are prone to bending in the discharging process, the uniformity of the warps in the discharging process cannot be guaranteed, and due to the fact that most of the warps are of a fixed structure, the height of a collecting roller cannot be adjusted are solved. According to the technical scheme, the adjustable warping machine discharging mechanism comprises a supporting bottom plate; the device further comprises a discharging assembly and a collecting assembly. By arranging the discharging assembly, a wire rod passes through the interior of the warp groove, the uniformity of the warp is ensured, the leveling roller can press and level the warp on the warp guide roller through the gravity of the leveling roller, a first telescopic spring can drive a first limiting sliding block to conduct elastic adjustment, the leveling roller is adjusted to the proper tension, and therefore the leveling effect is improved. The warp is prevented from being bent in the discharging process, then the collecting roller is rapidly and stably installed through the collecting assembly, and the height of the collecting roller is adjusted.

This invention provides a multi-head steel strip winding control system, including a main channel with multiple winding stations equipped with winding wheels along its length. The steel strip moves along the main channel, arranged from the outside to the inside and sequentially wound onto the winding wheels at each winding station. A redundant steel strip detection unit detects the amount of steel strip redundancy. When the redundancy exceeds a maximum redundancy threshold, the winding wheel speed is increased until the redundancy falls below a minimum redundancy threshold, at which point the speed is reduced back to the initial speed. As the steel strip passes through the main channel, it is wound directly onto multiple winding wheels in an outward-to-inward sequence, eliminating the need for rewinding via a rewinding machine and then rewinding via a layer winding machine, thus shortening production steps. Simultaneously, it keeps the steel strip in a relaxed state during winding, preventing excessively long redundant steel strips from drooping and contacting the ground, which could cause multiple narrow steel strips to knot or rub against the ground, affecting continuous production and product quality.

This utility model relates to the field of cotton yarn cradle technology, specifically to a cotton yarn cradle pressure adjustment module, including a module support base and an outer cotton yarn ring. A shaft is rotatably connected inside the module support base, and a first motor is fixedly connected inside the shaft. A rotating shaft is fixedly connected to the output end of the first motor. Multiple limiting grooves are formed on the outer surface of the rotating shaft, and a limiting rod is fixedly connected inside each limiting groove. A slider is slidably connected to the outer surface of the limiting rod. This utility model, by incorporating a first motor, causes the rotating shaft to rotate inside the shaft, thereby driving the slider to slide within the limiting groove. The sliding trajectory determines the distance between the inner cotton yarn rings. Adjusting the distance between the inner cotton yarn rings determines the tension of the cotton yarn, ensuring stable tension during the spinning process. The cradle, through the application of adjusting force, ensures consistent cotton yarn tension, thus achieving pressure adjustment and guaranteeing processing efficiency.

This utility model relates to the field of wire saws and discloses an improved wire cutting unit, including a support body, four rollers rotatably mounted on the support body, two sets of wire take-up and unwinding systems, and a sliding mechanism. An installation structure is provided on the outer side of either the left or right end of the support body, and both sets of wire take-up and unwinding systems are slidably connected to the installation structure via the sliding mechanism. The advantages of this utility model are: it simplifies the entire operation process and improves operational efficiency; simultaneously, each set of wire take-up and unwinding systems only requires one guide wheel body, which reduces the probability of malfunctions, thereby minimizing the impact on production and reducing implementation costs.

The invention relates to a welding strip supply device and method, in particular to a multi-station unwinding device and method, and aims to overcome the defect that existing market equipment generally adopts a single unwinding disc mechanism and cannot meet the requirement of large-scale production. The multi-station unwinding device comprises a switching part and a plurality of unwinding units. Each unwinding unit comprises a strip supply unit, a strip winding unit, a strip storage unit and a wire clamping unit which are sequentially arranged along a welding strip path, and a plurality of wire passing wheel sets; the tape supply unit supports the configuration of 1-30 rotating shafts, so that different capacity requirements are met; the strip storage unit provides independent tension control to ensure that the tension of the welding strip is consistent; when one unwinding unit operates normally, other unwinding units can be maintained or replaced at the same time, the multiple unwinding units can be rapidly switched through the switching component, and the unwinding units which are operating do not need to be interfered.

The automatic continuous laminating device comprises a movable lifting mechanism, an unwinding mechanism, a winding mechanism and an electric cabinet, one end of the double-sided adhesive tape is connected with the unwinding mechanism in a winding mode, and the other end of the double-sided adhesive tape sequentially penetrates through an adhesive breaking mechanism, an elastic compression roller mechanism and a supporting roller assembly and is connected to the winding mechanism. The supporting roller assembly and the winding mechanism are connected with the power mechanism. The constant linear speed structure is used for keeping the constant speed of the double-sided adhesive tape; and the torsion self-sliding structure is used for preventing the unwinding mechanism and the winding mechanism from freely rotating. According to the automatic continuous gluing device for the double-faced adhesive tape with the specified length, the gluing length can be freely set, the shutdown time of manual gluing is shortened, automatic intelligent manufacturing of a production line is achieved, and data continuity automation in the whole process from beginning to end of gluing of the double-faced adhesive tape is achieved.

The utility model is applicable to the technical field of doubling machines, and provides a doubling machine with a tension adjusting device, which comprises a base and a support plate fixedly mounted at the top of the base. The pay-off wheel and the take-up wheel are arranged on the base and the supporting plate respectively; the doubling coils and the limiting wheels are fixedly mounted on one side of the supporting plate and used for guiding yarns; the tension adjusting wheel is arranged on one side of the supporting plate and used for adjusting yarn tension; the tension detector is hinged to one side of the supporting plate and used for detecting yarn tension; the tension adjusting mechanism is arranged on the supporting plate and used for adjusting the tension adjusting wheel; the tightness adjusting mechanism is arranged on one side of the supporting plate and used for adjusting the tightness of the yarn. The doubling machine with the tension adjusting device has the advantages that the tensioning degree of multiple strands of yarn can be kept consistent, the tension of the yarn can be adjusted conveniently, and doubling operation of the yarn is facilitated.

The invention relates to a copper-plated spiral winding structure for a high-temperature superconducting strip, which comprises a bottom plate, a rolling shaft, a guide wheel and an end cover, and is characterized in that one end of the rolling shaft is rotationally arranged on the bottom plate; the guide wheels are arranged on the outer side of the rolling shaft in series and operate independently, and an end cover is arranged at the other end of the rolling shaft and used for limiting the guide wheels installed on the rolling shaft. The guide wheel can independently and freely rotate on the rolling shaft, the rolling shaft also rotates, friction and resistance between the strip and the guide wheel are reduced, the strip is allowed to move more freely in the winding process, it is ensured that tension of the strip is kept consistent in the winding process, deformation or breakage of the superconducting strip caused by too large tension is avoided, and the superconducting strip winding efficiency is improved. The risk of product damage is reduced, the manufacturing quality and reliability of the superconducting tape are improved, the production cost is reduced, and the efficiency of the copper plating process is improved.

The utility model relates to the field of cutting tools, and discloses a movable sectional warping machine which comprises a machine body, the machine body is provided with a fixing structure, the fixing structure comprises a first motor, the output end of the first motor is fixedly connected with a plurality of rotating columns, the outer walls of the rotating columns are fixedly connected with a plurality of first gears, and the first gears are fixedly connected with a plurality of second gears. A plurality of discs are fixedly connected to the outer wall of each rotating column, a plurality of moving columns are rotatably connected to the side wall of each disc, a chuck is fixedly connected to the outer wall of each moving column, each chuck is slidably connected to the outer wall of the corresponding disc, and a swing plate is fixedly connected to the bottom of each rotating column. And the side wall of the rocking plate is fixedly connected with a fixed column. According to the utility model, the motor, the gear, the rotating column and other structures are matched, so that the stress condition of each moving column is the same, the tension of the moving columns is kept consistent, and the quality and the uniformity of yarns are ensured.

The invention discloses a knitted fabric heat-setting machine which comprises a rack, an unwinding device, a winding device, a steam humidifying assembly, a drying assembly and a fabric flattening device, the unwinding device and the winding device are arranged on the two sides of the rack, a partition plate is arranged in the rack, and an inner cavity of the rack is divided into a humidifying cavity and a drying cavity by the partition plate; the steam humidifying assemblies and the drying assemblies are located in the humidifying cavity and the drying cavity correspondingly, the number of the steam humidifying assemblies is two, and the two steam humidifying assemblies and the two drying assemblies are located on the upper side and the lower side of the knitted fabric. The first needling rod and the second needling rod apply tension to knitted fabric conveyed in the rack to straighten and flatten the knitted fabric, then the knitted fabric is dried and shaped through the drying assembly, wrinkles of the knitted fabric can be eliminated, and meanwhile the size of the shaped knitted fabric can be more stable.

The utility model discloses detection equipment for breathable elastic braid production, which comprises a main body mechanism, a plurality of tension adjusting mechanisms are fixedly mounted in the main body mechanism, quick release mechanisms are fixedly mounted at two ends of the main body mechanism, and each tension adjusting mechanism comprises a second mounting frame. A first screw rod is fixedly mounted at the top of the second mounting frame, a displacement rod is movably mounted in the first screw rod, a spring is movably mounted on the outer wall of the displacement rod, a screw rod motor is in threaded connection with the outer wall of the first screw rod, and a pressure sensor is fixedly mounted at the top of the displacement rod; by starting the lead screw motor to change the position of the lead screw motor on the outer wall of the first screw rod, the tension degree of the spring is changed, so that the stress between the mounting sleeve and the second mounting frame is changed, the pressure of the conveying roller on the elastic braid is accurately controlled, and the tension of the elastic braid is controlled within a constant range.

The invention relates to the technical field of textile fabric detection, in particular to a defect detection device for textile fabric processing, which comprises a rack, a first conveying roller assembly and a second conveying roller assembly, the first conveying roller assembly comprises a first top conveying piece rotationally arranged at the top of the rack and a first bottom conveying piece rotationally arranged at the bottom of the first top conveying piece. The second conveying roller assembly can slide along the rack and is matched with the linkage control of the elastic supporting piece, the photoelectric proximity switch and the metal plate induction piece, the fabric tension degree can be automatically adjusted, the moving speed of the fabric is kept consistent with the rotating speed of the conveying rollers through the transmission fit of the driving motor and the conveying rollers, and the fabric tension degree can be automatically adjusted. The fabric between the first conveying roller set and the second conveying roller set is always in a proper tensioning state, wrinkles caused by fabric looseness are avoided, and the defect detection accuracy is further improved.

The utility model relates to a sound box processing technical field discloses a kind of sound cloth covering device, comprising: cabinet, the first opening is equipped in cabinet top, lifting mechanism is equipped in cabinet, the drive end of lifting mechanism is equipped with sound positioning seat, and sound positioning seat extends first opening;And outer support mechanism, installation is in cabinet top, outer support mechanism includes outer support platform and several outer support cylinders, the middle position of outer support platform is equipped with second opening, second opening is coaxially arranged with first opening, several outer support cylinders are distributed and set around cloth covering mouth, the drive end of outer support cylinder is equipped with outer support piece, and outer support piece is used to cover net cloth;Wherein, several outer support cylinders are used to drive outer support piece and open net cloth, lifting mechanism is used to drive sound positioning seat and rise to second opening.The utility model's sound cloth covering device lifting mechanism cooperates outer support mechanism and realizes the function of automatic sound cloth covering, to ensure the consistency of product quality.

The invention discloses a take-up device for data line production, and relates to the technical field of data line production devices. The device comprises four racks, the tops of the four racks are fixedly provided with the same assembly table, the bottom of the assembly table is fixedly provided with a track disc and a first center electric push rod, the bottom of the track disc is provided with a receding hole, and the first center electric push rod is located in the receding hole; the telescopic end of the first center electric push rod is provided with an outer sleeve sliding barrel in a driving mode. By arranging the winding assembly, during winding, a B-end driver drives a B-end clamping jaw to clamp the B end of a data line, an A-end driver drives an A-end clamping jaw to wind the A end of the data line, and a driving trolley drives the A end of the data line and a cable to wind at the bottom end of an outer sleeve sliding barrel, so that automatic transportation, taking and take-up of the data line are achieved; the data lines of the same type have the same take-up process and quality, and the situation that the take-up shapes of the data lines are not consistent in the prior art is avoided.

The utility model provides a transmission mechanism and machining equipment, the transmission mechanism comprises a rack, two transmission chains and a tensioning assembly, and the two transmission chains are arranged on the rack side by side in a transmission mode; the tensioning assembly comprises a mounting frame, a rotatable first tensioning gear and a rotatable second tensioning gear, the mounting frame is arranged on the rack, the first tensioning gear is meshed with a transmission chain, and the first tensioning gear is movably arranged on the mounting frame and tensions the transmission chain; the second tensioning gear is meshed with the other transmission chain, and the second tensioning gear is movably arranged on the mounting frame and tensions the transmission chain; the first tensioning gear and the second tensioning gear can move independently. The first tensioning gear and the second tensioning gear can move independently, when the first tensioning gear and the second tensioning gear are controlled to move in the corresponding radial direction, the tensioning degrees of the corresponding transmission chains can be adjusted to be consistent, and then the matched transmission effect of the two transmission chains is stable.

The utility model relates to the technical field of cloth dyeing equipment, and discloses a sizing and dyeing combination machine for jean cloth production, which comprises a main body, fixed support mechanisms are arranged in the main body and at the top of the main body, a tension device is arranged at the top of the main body, and a guide device is arranged at the top of the main body. A supporting plate is sleeved with a cloth cylinder containing denim cloth, an L-shaped frame is driven by a threaded sleeve to move by rotating a first threaded rod, then a supporting rod is driven to move in the moving process of the L-shaped frame, and the supporting rod is driven to move under the limitation of a connecting rod; the outer supporting plate is driven to be opened outwards by rotating the rotating shaft, so that a denim fabric barrel is completely fixed outside the supporting plate, the denim fabric barrel is prevented from rotating, consistent tension force can be kept all the time in the rotating process, subsequent dyeing is prevented from being affected, and the fabric is prevented from being folded.

The utility model relates to the field of roller shutter accessories, in particular to an elastic positioning structure of a roller shutter rope, which is characterized by comprising two springs, two rolling guide bodies and two positioning ropes, the two rolling guide bodies are arranged side by side left and right, and the two springs are respectively and transversely arranged above the two rolling guide bodies; one end of one positioning rope is connected to one end of the spring on the left side; and one end of the other positioning rope is connected to one end of the spring on the right side. The two positioning ropes can realize elastic buffering, so that the roller shutter can lift and slide lightly, the tightness of the positioning ropes is very reasonable, the tensioning forces of the two positioning ropes are consistent, the conditions of deviation and displacement during lifting of the roller shutter can be avoided, and the service life of the roller shutter is prolonged. The device has the advantages of being good in synchronism, convenient to operate, less in jamming and the like.

This invention relates to the field of swivel folding structure technology, and discloses a swivel folding structure and an electric bicycle. The swivel folding structure of this invention includes a frame assembly and a rotating assembly. The lower end of the frame assembly is provided with a rotating seat, a first connecting shaft, and a first wheel. The rotating assembly includes a connector, a second connecting shaft, a hub, a second wheel, and a belt. The connector has a first bushing and a locking mechanism at both ends. The first bushing is rotatably connected to the outside of the rotating seat. The rotating assembly can rotate along the first connecting shaft to fold or unfold the electric bicycle. This invention solves the problem of belt slippage during folding by allowing the rotating assembly to rotate and fold along the first connecting shaft, maintaining consistent belt tension, thus improving folding reliability and user experience.

The utility model relates to the technical field of printing equipment manufacturing, in particular to a printing device capable of controlling tension and speed of a colored tape, which can realize synchronous conveying of the colored tape and printing media and further overcome the problem of printing quality reduction caused by asynchronism of the colored tape and the printing media in the prior art. The color tape releasing assembly is provided with a color tape releasing rubber roller and a torque motor, the torque motor drives the color tape releasing rubber roller to rotate, the color tape collecting assembly is provided with a color tape collecting rubber roller, a stepping motor and a stepping motor control circuit, and the stepping motor drives the color tape collecting rubber roller to rotate. The stepping motor control circuit is connected with the stepping motor, and the stepping motor control circuit comprises a printing medium paper-out speed detection circuit, a paper-out side colored tape rolling detection circuit and a controller.

The utility model relates to the technical field of medical instruments, in particular to a wound stitching instrument which comprises a shell, a first hole is formed in the lower end of the rear portion of the shell, a second hole is formed in the lower end of the front portion of the shell, and a first rotating shaft is arranged in the middle of the inner side of the shell. The percussion handle penetrates through the hole to be arranged on the inner side of the shell, and the percussion handle is rotationally connected with the first rotating shaft; the propelling unit is arranged at the front part in the shell; the tightening unit comprises two fastening parts and a tightening part, the fastening parts are arranged below the propelling unit, sliding grooves are formed in the inner sides of the fastening parts, the bottom walls of the sliding grooves are inclined, sliding rods are arranged in the sliding grooves, the other ends of the sliding rods are fixedly connected with the percussion handle, the tightening part is arranged on the outer side of the shell, and the tightening part is arranged on one side of the percussion handle; by means of the arrangement of the tightening unit, skin and flesh on the two sides of a wound can be tightened, and the suturing effect of the suturing nail is improved.