1053 results about "Drug packaging" patented technology

The invention provides a drug identification information intelligent association method and system based on multi-source data fusion. According to the method, firstly, multi-source heterogeneous data generated in the medicine circulation process is obtained, then key information elements printed on the surface of a medicine package are recognized, meanwhile, a unique identifier bound with the medicine identity is extracted, and then a dynamic tracking link of a medicine transportation path is established; then cross-modal association matching is carried out on the key information element, the unique identifier and the dynamic tracking link to generate a dynamic mapping relation, finally the consistency of the dynamic mapping relation is verified, and the verified dynamic mapping relation is synchronously updated to a supervision terminal of a medicine circulation link. According to the technical scheme provided by the invention, the identification precision and timeliness of risks such as package tampering and path forgery are improved, the abnormal omission ratio caused by data acquisition errors or artificial tampering is reduced, and the reliability of cross-modal data collaborative verification is enhanced.

The invention discloses a drug traceability code acquisition method, system and device based on image recognition, and a medium. The method comprises the steps of obtaining a drug package image; preprocessing the medicine packaging image, and performing edge detection, region segmentation, image correction and barcode analysis on the preprocessed medicine packaging image to obtain medicine traceability code information; obtaining prescription data, and checking the drug traceability code information according to the prescription data; and when the drug traceability code information is checked to be correct, carrying out associative storage on the drug traceability code information and the prescription data. According to the invention, drug traceability code information can be rapidly and accurately identified, and environments such as complex backgrounds, illumination changes, traceability code deformation and the like can be adapted; meanwhile, multiple drug traceability codes can be collected, the purpose of batch collection is achieved, supervision of a drug dispensing end is achieved, medication safety of patients is ensured, drug management can be perfected, and subsequent drug traceability is facilitated.

The invention provides a melogabalin besylate tablet and a preparation method thereof, the melogabalin besylate tablet comprises a plain tablet and a coating, the plain tablet comprises, by mass, 4.39% of melogabalin besylate, 75-85% of mannitol 150SD, 3-10% of a disintegrating agent, 0.5-3% of a lubricant, 0.1-0.5% of an adsorbent, 1-10% of a filler, 0.5-3% of an antioxidant A and 0.1-3% of an antioxidant B; and the coating comprises the following components in percentage by mass: 30-45% of talcum powder, 2-10% of lauryl sodium sulfate, 30-45% of glycerol monocaprylate / dicaprylate, 2-10% of titanium dioxide, 30-45% of polyvinyl alcohol, 0.5-2% of iron oxide yellow and 0.5-2% of iron oxide red. The melogabalin besylate tablet prepared by the invention uses specific coating composition and specific coating parameters, so that the melogabalin besylate tablet can be stably stored without a drying agent and a composite aluminum bag for medicine packaging, the stability of the tablet is greatly improved, the complexity of equipment required by production is simplified, and the production cost is greatly saved.

The invention discloses a medicine package online detection system based on three-dimensional reconstruction, and relates to the technical field of three-dimensional reconstruction, the system is matched with a binocular industrial camera through a numerical control rotary table to collect a double-view group covering the whole surface of a medicine package and containing an overlapping surface; carrying out feature point registration by adopting a polarization fusion SIFT algorithm, and positioning a packaging area through a model fusing packaging topology priori and edge gradient constraint; generating a disparity map based on a semi-global block matching algorithm, and combining camera calibration parameters with a rotary table rotation angle for splicing to obtain a complete packaging point cloud; a three-dimensional grid model is generated through Poisson curved surface reconstruction, accurate detection of surface concave-convex defects is achieved through curvature sudden change analysis and a tolerance threshold comparison method, and finally a defect information set is output and linked with a sorting mechanism to complete qualification judgment. The system can carry out full-surface and high-precision detection on medicine packages, is suitable for multi-specification packages, and meets the quality control requirements of industrial production.

To provide a drug package binding device that frees an operator from works of continuously stepping on a foot switch that imposes the burden on the operator and releasing the foot switch at the right timing, and enables a drug package binding work to be performed easily and without errors.SOLUTION: In a drug package binding machine 1 as a drug package binding device which comprises a first gear such as a rotatable first gear 4a and a second gear such as a second gear 4b, in which multiple drug packages are inserted in an overlapping manner to an engagement part of the first gear and the second gear, and the multiple drug packages are bound by the first gear and the second gear, there is provided rotational drive means such as a drive motor 5 which rotationally drives any of the first gear and the second gear. The drug package binding device automatically stops after rotationally driving for the prescribed number of revolutions by the rotational drive means after the binding operation starts.SELECTED DRAWING: Figure 15

The invention discloses an improved defect detection method for a medicine bubble cap plate by using YOLOv12, and relates to the technical field of medicine packaging detection, and the method comprises the steps: S1, taking a defect data set of the medicine bubble cap plate, carrying out data enhancement processing on the data set, expanding the scale of the data set, and improving the generalization ability of a model; s2, images of the data set are input into an improved YOLOv12 model, the model adaptively changes the weight of each convolution kernel through a dynamic convolution module, and the features of the images are efficiently extracted; and S3, inputting the original features into a partial convolution module, performing convolution operation on a subset of an input channel to realize model distillation, and combining point-by-point convolution to realize cross-channel feature recombination. According to the improved defect detection method, a DynamicConv reconstruction network basic unit is introduced to replace a conventional convolutional layer of an original model, and in order to further lighten the model, partial convolution is used to replace an A2C2f module at the tail end of a backbone network, so that an effective solution is provided for real-time detection of medicine packaging quality control.

The utility model relates to an integrally-torn display packaging box, and belongs to the technical field of medicine packaging. The packaging box comprises a box body and a front face built-in layer, the section of the box body is rectangular, the box body is closed, a containing cavity is formed in the box body and used for containing contents, the box body comprises a rectangular box front face, two tearing lines are arranged at preset positions of the box front face, the two tearing lines are horizontally arranged at intervals, and an easy-to-tear strip is arranged between the two tearing lines; the front built-in layer is matched with the box front, the front built-in layer is connected with the inner side of the box front, the front built-in layer and the box front are arranged in a stacked mode, an image-text area is arranged on the first side, close to the box front, of the front built-in layer, the image-text area is used for displaying information of contents and is used for being arranged corresponding to the easy-to-tear strip, and the easy-to-tear strip can cover the outer side of the image-text area. And the image-text area can be exposed after the easy-to-tear tape is torn. The display effect of the packaging box can be improved.

A vessel including a thermoplastic wall enclosing a lumen is disclosed. The wall supports an SiOx composite barrier coating or layer, for which x is from 1.8 to 2.4, between the wall and the lumen. High Resolution X-ray Photoelectron Spectroscopy (XPS) shows the presence of an interface between the composite barrier coating or layer and the wall or substrate. In one aspect, the interface has at least 1 mol. % O3—Si—C covalent bonding, as a proportion of the O3—Si—C covalent bonding plus SiO4 bonding. In another aspect, the interface has an Si 2p chemical shift to lower binding energy (eV), compared to the binding energy of SiO4 bonding. The result is a tightly adherent composite barrier coating or layer having a high degree of adhesion to the substrate under practical use conditions. Methods of applying the composite barrier coating or layer are also disclosed.

The invention belongs to the technical field of food packaging or medicine packaging materials, and particularly relates to a cooking-resistant high-transparency high-barrier cycloolefin copolymer film and a preparation process thereof. The cooking-resistant high-transparency high-barrier cycloolefin copolymer film is a three-layer co-extruded film, the layer structure is shown in figure 1, the cooking-resistant high-transparency high-barrier cycloolefin copolymer film is composed of an inner layer, a middle layer and an outer layer, and the cooking-resistant high-transparency high-barrier cycloolefin copolymer film is prepared from the following raw materials: the inner layer is prepared from COC, a toughening agent and modified ternary polypropylene random copolymer; the middle layer comprises COC, a toughening agent, modified binary polypropylene random copolymer and layered double hydroxide; the outer layer is prepared from COP, a toughening agent, modified binary polypropylene random copolymer and layered double hydroxide; by utilizing the characteristics of a multi-layer film structure and taking the high-performance modified COP layer as an outer layer, the problem that the light transmittance is reduced due to the fact that copolymerized ethylene monomers and norbornene in COC form hydroxyl groups with water molecules due to high-temperature ring opening is solved, and the light transmittance of the cycloolefin copolymer film reaches 95% or above after the cycloolefin copolymer film is sterilized at the high temperature of 121 DEG C.

There is provided an automatic medicine packing machine for automatically packing medicines on a dose basis according to prescription information. The automatic medicine packing machine includes a medicine cassette mounting part in which a plurality of medicine cassettes for supplying the medicines are mounted; a medicine collecting part configured to collect the medicines supplied according to the prescription information; a medicine packing part configured to pack the medicines collected by the medicine collecting part on the dose basis; a medicine cassette storage part in which a plurality of medicine cassettes are placed and stored; and a medicine cassette replacement system configured to grip the medicine cassette and replace the medicine cassette between the medicine cassette mounting part and the medicine cassette storage part.

The utility model relates to an automatic bottle cap elevator, and relates to the technical field of bottle cap lifting, the automatic bottle cap elevator comprises a material storage box used for storing bottle caps and a conveying mechanism used for lifting the bottle caps, the feeding end of the conveying mechanism is located in the material storage box, and a material stirring module is installed at the end, close to the conveying mechanism, in the material storage box; a material pushing module used for pushing the bottle caps to the material stirring module is installed in the material storage box. The material stirring module comprises a driving assembly, a rotating shaft and a material stirring piece, the driving assembly is installed outside the material storage box, the driving assembly is in driving connection with one end of the rotating shaft, the other end of the rotating shaft penetrates through the bottom of the material storage box and extends into the material storage box, the rotating shaft is sleeved with the material stirring piece, and the material stirring piece is located at the feeding end of the conveying mechanism. The device has the advantages that when few bottle caps are distributed and dispersed in the storage box, under the dual action of the shifting module and the pushing module, the mounting frequency of the bottle bodies at the discharging opening of the bottle body conveying belt can be ensured, the mounting speed of the bottle caps and the bottle bodies is increased, and the medicine packaging production efficiency is improved.

A pivoting cap with locking mechanism for medication dispenser including a male and a female cap assembly secured by a pivot assembly. The male cap assembly is secured on top of a medication dispenser such as prescription bottles. The male cap assembly includes a locking arm with a locking lever attached to a bottom portion thereof, and a top portion. The female cap assembly includes a rotating cap having channels internally disposed. When assembled, the locking arm is received by one of the channels, thereby impeding said rotating cap from turning either direction. To free the rotating cap, a user must apply a radial force upon the lock arm, consequently the locking lever will be displaced inwardly. The user would then twist to move the cap to its respective indicia for its desired scheduling or to their dispensing opening.

The invention relates to a cycloolefin copolymer composite material as well as a preparation method and application thereof. The cycloolefin copolymer composite material is prepared from the following raw materials: a cycloolefin copolymer, a thermoplastic elastomer, a nucleating agent and a flow promoter, the total mass of the cycloolefin copolymer and the thermoplastic elastomer is 100%, and the content of the thermoplastic elastomer is 0.5-4%. The cycloolefin copolymer composite material disclosed by the invention has better impact resistance and drop resistance, eliminates microcracks after high-temperature moist heat sterilization, is high in material transparency and excellent in light transmittance, and can be well applied to medicine packaging and medical equipment.

The utility model relates to the technical field of packaging boxes, and specifically to a gluing device for pharmaceutical packaging boxes, including a conveying frame, a conveying assembly is provided on the inner side of the top of the conveying frame, the conveying assembly includes a roller, a stepper motor and a conveyor belt, the rollers are rotatably connected to the front and rear sides of the top of the conveying frame, the stepper motor is installed at the left end of the front roller, and the conveyor belt is arranged on the outer surface of the roller, a support frame is provided on the top of the conveying frame, an adjustment assembly is provided on the support frame, and a gluing assembly is provided on the adjustment assembly. Before the device glues the packaging box, the existing spray box is first docked with the infusion tube on the spray gun, and then the spray gun can be driven to move by the adjustment assembly to facilitate the adjustment of the spraying position, and the packaging boxes of different sizes on the conveyor belt can be limited by the limit assembly, which effectively prevents the packaging box from shifting, and has high practicality.

The present invention generally relates to packaging systems embedded with adsorbent materials, more particularly, it relates to materials used in packaging of pharmaceuticals for actively adsorbing volatile compounds and moisture.

The invention discloses a drug packaging material bursting strength detection device, and belongs to the technical field of bursting strength detection. The device mainly comprises a base; the unwinding unit is composed of an unwinding roller and two sets of placing supports, a glue film is wound on the unwinding roller, and motors are installed on the side faces of the placing supports; the winding unit and the unwinding unit are of similar structures; fixing seats are mounted at the two ends of the sliding seat plate; spiral grooves are formed in the lead screw, and connecting rods are in transmission connection with the two sets of spiral grooves; limiting grooves are formed in the movable rods and the connecting rods, side protruding blocks are installed on the movable rods, and a pressing roller is installed between the two sets of movable rods. And a first rack is mounted on the protruding part of the first gear. According to the bursting strength detection device for the medicine packaging material, the flattening mechanism is used for flattening and wrinkle removing operation on the adhesive film, and the subsequent half pressing ring is used for preliminarily fixing the flattened adhesive film under the action of the second spring, so that the pressing roller is prevented from crossing the adhesive film, the adhesive film is prevented from being wrinkled after being recovered to the initial state.

The invention is suitable for the field of medicine management, and provides an information tracing method and system for undivided medicines and electronic equipment, and the method comprises the steps: generating a sub-sequence code corresponding to each undivided medicine based on a medicine package tracing code of a target medicine according to a first number value of the undivided medicines in the target medicine; acquiring patient information and medicine sales information; and based on the medicine sales information, determining a second quantity value of the to-be-sold medicine, cancelling the second quantity value of the sub-sequence codes, and associatively storing the cancelled sub-sequence codes and the patient information. According to the scheme, on the basis of the generated sub-sequence code related to the drug package traceability code, association binding of the patient information and the undivided drug is achieved, and the problem that in the prior art, an information traceability method for the undivided drug is lacked is solved.

The invention belongs to the technical field of nano-drugs, and particularly relates to an artificially evolved protein cage nano-drug as well as a preparation method and application thereof. The artificial evolution protein cage nano-drug provided by the invention comprises an artificial evolution protein cage and a nucleic acid biomacromolecular drug, the artificial evolution protein cage is obtained by artificially obtaining a 240 polymer nano-protein cage C27-A with a PDB number of 6NJ8 by an artificial evolution system, and the amino acid sequence of a protein subunit of the artificial evolution protein cage is as shown in SEQ ID NO.1; the artificially evolved protein cage can be used for efficiently packaging nucleic acid type biological macromolecular drugs inside, has the advantages of high protein yield, good stability, good tumor treatment effect, excellent safety and the like, and can solve the technical problem of low drug packaging efficiency of protein cage nano drugs in the prior art.

The invention discloses medicinal package friction coefficient detection equipment, and belongs to the technical field of medicine package detection. The device mainly comprises a detection seat, and a supporting plate is fixedly mounted on the back surface of the detection seat; the detection plate is arranged on the detection seat; the clamping assemblies are installed on the two sides of the detection plate through bolts, a first sliding rod is fixedly installed between the clamping assemblies, and the clamping assemblies are mainly used for clamping the medicine packaging film; the first sliding block is installed on the first sliding rod in a sliding mode. According to the medicinal package friction coefficient detection equipment, the electric heating block, the electric cooling block, the contact block and the friction block are arranged, when medicinal package friction detection is carried out, the temperature of a packaging film located in a non-area can be controlled through the electric heating block and the electric cooling block, and when the friction block makes contact with the packaging film, the friction coefficient of the packaging film is detected. The friction coefficient of the packaging film at different temperatures is detected, so that the friction test on the packaging film at different temperatures is realized.

The invention relates to the technical field of intelligent grabbing, in particular to an intelligent medicine identifying and grabbing system based on a robot arm, which comprises an identifying and checking module, a grabbing and positioning module, a grabbing and executing module, a buffering control module and a distributing and transferring module. According to the method, three groups of independent parameters including the medicine packaging size, the bar code character structure and the near-infrared reflectivity are extracted, a multi-dimensional recognition reference is established, the misrecognition risk caused by single-dimensional judgment is avoided, and multiple contact area indexes such as the curvature radius change rate, the texture mean value and the reflectivity gradient are calculated; the optimal adsorption point position is selected to improve the adsorption stability, the adsorption success rate is improved by matching the quality estimated value and the adsorption requirement grade of the medicine packaging unit with the applicable adsorption pressure grade, the grabbing integrity and the distribution stability are guaranteed, and the release time and the target goods shelf coordinate linkage setting are combined. And the certainty of a distribution path and the consistency of a control closed loop are enhanced.

The automatic feeding device for medicine packaging box production comprises a conveying belt, side plates are installed on the two sides of the conveying belt, a base is installed at the bottoms of the side plates, an adjusting push plate is installed at the tops of the two side plates through baffles, and a rotating guide plate is rotationally connected to the end of the adjusting push plate; the outer side of the side plate is provided with a pushing mechanism used for driving the rotating guide plate to swing, and the outer side of the pushing mechanism is provided with a third transmission mechanism used for driving the pushing mechanism to move intermittently. Power output by the driving motor is transmitted to the adjusting mechanism through the first transmission mechanism and the second transmission mechanism, the second transmission mechanism can transmit torque to the third transmission mechanism, the third transmission mechanism drives the pushing mechanism to move back and forth in a reciprocating mode, the rotating guide plate is driven to swing, and the packaging box is prevented from being clamped at the end of the adjusting pushing plate.

The embodiment of the invention relates to the technical field of data processing, and provides a medicine classification method of a medical system and a related device, and the method comprises the steps: obtaining package bar code image data and specification image data of a newly stored medicine; performing image recognition on the package bar code image data to obtain first medicine classification information; performing character classification information identification on the specification image data to obtain second medicine classification information; comparing the first medicine classification information with the second medicine classification information to obtain a medicine classification information comparison result; and determining a drug classification result according to a drug classification information comparison result, so that auxiliary judgment can be performed in combination with identification of a drug specification and correct judgment of a package bar code in a drug package bar code data identification process, and the technical problem of drug classification error caused by bar code misidentification due to overexposure is avoided.

A product provision system, a product provision processing device, and a program are provided that prevent health damage caused by the overdose of medicines. [Solution] When a user selects to purchase a drug package containing multiple drugs, the amount of a specific abuse-preventing ingredient contained in the drug package selected for purchase is calculated. Also, based on the calculated amount of the specific ingredient and drug-taking history information on the abuse-preventing ingredient contained in the drug package previously provided to the user, an estimated drug-taking amount is calculated to estimate the amount of the specific ingredient within a predetermined period. Then, when it is determined that the calculated estimated drug-taking amount exceeds a predetermined upper dose limit, provision of the drug package selected for purchase by the user is discontinued.

The invention provides a medicine package defect detection system based on machine vision, relates to the technical field of defect detection, and realizes accurate reduction of the surface morphology of a medicine package through a high-precision three-dimensional imaging technology based on structured light coding in combination with multi-angle parallax reconstruction and multi-channel disturbance analysis. And on the basis, a depth gradient difference graph and a disturbance graph are constructed to effectively capture tiny abnormal characteristics such as sunken defects and structural disturbance, so that the sensing capability of the system on fine-grained defects is improved. By constructing a redundant block analysis mechanism, when a two-dimensional code area is shielded or damaged, content restoration and logic verification can still be performed by using a cross-frame redundant structure, so that the risk of misjudgment caused by decoding failure of the two-dimensional code is effectively reduced, and the robustness of the system in various interference scenes is improved.

The invention relates to the technical field of medicine packaging materials, and discloses a preparation technology of a high-barrier-property composite film for medicine. Comprising the steps of preparation of a degradable base material, coating of a bio-based pressure-sensitive adhesive, distribution of a gradient inhibitor, interface ion exchange activation, construction of an ion immobilization network, temperature and humidity gradient control curing, formation of a phase interface dehydration protection layer and the like. Through a dual action mechanism of pressure-sensitive adhesion and ion exchange and a synergistic effect of biological activity inhibition and ion migration blocking, efficient compounding of a degradable base material and an inorganic barrier layer is realized, and the technical problems of both environmental protection property and high barrier property, attenuation of interface bonding stability and long-term use performance and the like are solved.

The utility model relates to the technical field of automatic feeding devices, in particular to an automatic feeding device for medicine packaging box production, which comprises a lower box body and an automatic conveyor belt, the upper end of the lower box body is provided with the automatic conveyor belt, the inner side of the automatic conveyor belt is provided with air suction holes, the upper end of the lower box body is fixedly connected with an air suction box, and the upper end of the air suction box is provided with an air inlet. An air suction box is fixedly connected to the upper end of the lower box body, a communicating air channel pipe is fixedly connected to the inner side of the air suction box, a stable air box is fixedly connected to the upper end of the lower box body, a suction fan is fixedly connected to one side of the stable air box, and a servo motor is fixedly connected to the inner side of the stable air box. And meanwhile, the medicine packaging boxes are adsorbed to the automatic conveying belt, the stability of the medicine packaging boxes during feeding is ensured, and the situation that the quality of finished products is reduced when the medicine packaging boxes are machined is prevented.

The invention provides an aluminum-plastic medicine package detection system and method based on machine vision, and relates to the technical field of machine vision and intelligent detection, and the method comprises the steps: collecting a front-view image and an oblique-view image of an aluminum-plastic medicine package, processing the images through a noise reduction auto-encoder network, extracting the contour features of a package region, and carrying out the recognition of the contour features of the package region; and calculating a packaging regularity index. Meanwhile, the front view image is converted into an HSV color space, the height feature of the oblique view image is combined, the three-dimensional sealing feature of the aluminum foil packaging area is extracted, and the aluminum foil packaging quality index is calculated. And constructing a three-dimensional feature vector based on the two indexes, inputting the three-dimensional feature vector into a self-adaptive clustering model, and dividing packaging quality grades. Therefore, the problems of difficult three-dimensional feature extraction, inaccurate complex defect detection, weak multi-view feature analysis capability and the like can be solved, the detection precision and the intelligent level are improved, and accurate evaluation of the aluminum-plastic medicine packaging quality is effectively realized.

The invention relates to an intelligent medication and medicine taking management device, and aims to provide a safe, convenient and accurate medication and medicine taking solution for specific people. According to the device, technologies such as computer vision, natural language intelligent recognition and machine learning article classification model construction are adopted, and the technologies are integrated in a specially-designed hardware device through a set of embedded algorithms. And with the assistance of data interaction of edge computing and cloud computing, intelligent medicine identification, user binding, on-time and quantitative medicine taking reminding and whole-course voice interaction are realized. The device is provided with a camera, and automatic identification and memory of the medicine packaging box are achieved through a machine vision algorithm. The voice recognition module stores and recognizes medicine users, the communication module achieves remote management, and the Bluetooth module achieves terminal equipment interaction. In addition, the medicine box is controlled to be locked by outputting signals, and the medication safety is improved. According to the invention, the problems of the existing medication and medicine taking management system can be solved more safely, conveniently and accurately, and a more comprehensive medication and medicine taking solution is provided for specific people.

The melogabalin besylate preparation composition with excellent stability comprises an active pharmaceutical ingredient, a moisture-proof agent and an antioxidant, the moisture-proof agent comprises acrylic acid grafted starch; the preparation contains a coating or does not contain a coating; regardless of the weight of the coating, the dosage of the moisture-proof agent is more than 2% of the total weight of the preparation, and the dosage of the antioxidant is more than 1% of the total weight of the preparation. The melogabalin besylate preparation composition with excellent stability is obtained by using the moisture-proof agent acrylic acid grafted starch, the impurity generation condition during the storage period is lower than that of the original development agent, the safety of the melogabalin besylate preparation is effectively improved, and the medicine packaging can be simplified.

The invention discloses a roadway type stacking machine for medicine packaging boxes, and belongs to the technical field of stacking equipment.The roadway type stacking machine for the medicine packaging boxes comprises a walking steel rail, the walking steel rail is slidably connected with a mounting bottom frame, and supporting frames are symmetrically and fixedly connected to the upper end of the mounting bottom frame; a plurality of sets of limiting rails are arranged in the supporting frame, and a portal frame is fixedly connected to the upper end of the supporting frame. A driving assembly is fixedly connected to one side of the mounting bottom frame, lifting auxiliary assemblies are slidably connected to the supporting frame, and a lifting table is fixedly connected between the lifting auxiliary assemblies. By designing the multiple layers of moving assemblies and the telescopic pallet fork assemblies which are matched with each other, the distance between the telescopic pallet fork assemblies can be adjusted according to different heights between goods placing openings of a goods shelf, and the taking and placing efficiency of packaging boxes is greatly improved; and by designing the driving assembly, the lateral force of the whole stacking device is reduced, the road holding force is increased, and therefore stable advancing and retreating of the driving assembly are achieved.