58results about How to "Improve the accuracy of folding" patented technology

The present invention relates to a method and a device for analyzing the accuracy of a fold (3) which is produced via a folding apparatus for printed products. In the process, with the printed products (1) being shingled, sensors (4) detect the position of the fold with respect to markings (5) which are printed onto the printed product, the folding accuracy and other quantities connected therewith being determined therefrom with the aid of computers.

A chopper folder for a rotary press folds signatures which are periodically conveyed, one signature at a time, from a folding machine. The chopper folder includes a pair of folding rollers for folding a signature parallel to the conveyance direction, a prime mover, a crank arm fixed to an output shaft of the prime mover to be rotated together with the output shaft, a blade holder connected to the crank arm via a link, a chopper blade held in the blade holder and adapted to push the signature from an upper surface thereof in order to insert the signature into a space between the pair of folding rollers, and guide units for restricting motion of the blade holder such that the blade holder reciprocates only in a direction perpendicular to a conveyance plane along which the signature is conveyed.

A folding machine includes a lower conveyance belt that forms a lower conveyance path section for guiding and conveying a signature by a lower conveyance surface, an upper conveyance belt that forms an upper conveyance path section for guiding and conveying the signature by an upper conveyance surface, a chopper table for guiding the lower conveyance belt, a stopper for aligning a downstream end position of the signature, and a chopper blade for forming a chopper signature. A coefficient of static friction of the lower conveyance surface and the upper conveyance surface to an iron surface is 0.2 or more and less than 0.3, and a nip roller for increasing holding force to the signature between the lower conveyance surface and the upper conveyance surface is provided at a part more upstream side than the stopper by at least a length of the signature.

The invention discloses an FPC (flexible printed circuit) turnover machine, which comprises a test table, a jig, a circuit board pushing and ejecting device, a film tearing device, a turnover device and a laminating device. The jig is fixed on the test table and is located on one side of the test table. The circuit board pushing and ejecting device, the film tearing device, the turnover device andthe laminating device are arranged corresponding to the jig respectively. The jig comprises a jig plate. A product placement area is arranged on one side, away from the test table, of the jig plate.A product fixing structure is arranged on the product placement area. The circuit board pushing and ejecting device is located on one side, close to the test table, of the jig plate. A through hole used for allowing the circuit board pushing and ejecting device to penetrate through is formed in the jig plate. According to the invention, the automatic turnover and forming of an FPC is realized without the manual operation. Therefore, the manual cost is reduced, and the turnover precision is further improved.

The present invention provides a sheet processing apparatus including: a conveying portion which conveys a sheet; a stacking portion which stacks the sheet conveyed by the conveying portion; a first processing unit which performs a process to the sheet at a first process position on the stacking portion; a second processing unit which performs a process to the sheet at a second process position on the stacking portion, the second process position being at the downstream side in the conveying direction of the first process position; and a controlling portion which performs positioning of the sheet at the first process position when the first processing unit performs the process to the sheet and positioning of the sheet at the second process position when the second processing unit performs the process to the sheet which is passed through the first process position without being positioned.

The invention discloses a box-opening clamping jaw. The box-opening clamping jaw comprises a fixed bracket, a first folding air cylinder device and a second folding air cylinder device fixedly arranged on the fixed bracket, a plurality of suction disc mounting plates fixedly arranged on the fixed bracket, and a plurality of suction discs uniformly arranged on the suction disc mounting plates; the first folding air cylinder device comprises a first folding air cylinder fixing plate fixedly arranged on the fixed bracket, a first folding air cylinder fixedly arranged on the first folding air cylinder fixing plate, a first positioning plate fixedly connected to the air cylinder shaft of the first folding air cylinder, and a first folding pressure block fixedly arranged on the first positioning plate. According to the box-opening clamping jaw disclosed by the invention, the suction discs are arranged for carrying a box body, so that investment of manpower resources is reduced; and the first folding air cylinder device and the second folding air cylinder device are arranged, and are matched to complete folding of the box body, so that the production efficiency is high, and the folding precision is high.

The invention provides a shoe-shaped gold ingot machine and a paper folding process. The shoe-shaped gold ingot machine comprises a supply system, a before-folding conveying system, a folding system and a stacking system; the supply system comprises a bin; the bin comprises a bottom plate with the bottom obliquely arranged; a feed assembly is provided at the top of the bin; and the feed assembly comprises a swingable negative-pressure suction nozzle, and a clamping jaw capable of being inserted between the last piece of shoe-shaped gold ingot paper and dozens of shoe-shaped gold ingot paper. The paper folding process for the shoe-shaped gold ingot machine is a sheet-shaped gold ingot paper folding process, and comprises a sheet-shaped gold ingot paper feeding step, a folding and edge opening step and a large and small angle folding step. The paper folding machine utilizes a negative-pressure adsorption mode to implement single-piece feeding of shoe-shaped gold ingot paper to achieve good feeding stability, and performs edge opening treatment at a paper outlet of the folding machine to provide necessary conditions for subsequent small-angle folding so as to effectively prevent paperstacking in the subsequent step due to error accumulation of position precision. The process solves the problem that the existing shoe-shaped gold ingot machine cannot use dozens of sheet-shaped goldingot paper, and is ingenious in design, high in stability and good in use effect.

The invention relates to a method for folding applied for a buckle plate folding machine. The buckle plate folding machine has at least one first roller pair, a first later folding buckle plate at the paper running direction and a later folding roller pair at the paper running direction, wherein the the peripheral speed of one roller in the folding roller pair is always higher than the peripheral speed of of the other folding roller. A paper is drawn to pass through a folding station in a tension state through the speed difference. The invention also relates to the folding machine employing the method, wherein the application schemes of a standard rolling unit and a special rolling unit are set. According to the invention, the drive line or the folding roller diameter of the folding machine is adjusted.

The invention discloses a triangular paper folding device and method for paper jams and an automatic regulating mechanism. The automatic regulating mechanism comprises a conveyor belt, the triangular paper folding device, a mounting plate, a transmission component, a first drive device and a second drive device, wherein one end of the mounting plate is connected with the triangular paper folding device, and the other end of the mounting plate is connected with the transmission component; the transmission component is connected with the first drive device and the second drive device. The triangular paper folding device comprises a triangular paper folding block, a horizontal paper folding assembly and an oblique paper folding assembly, wherein the surface, needing to be turned over, of paper is turned over by 90 degrees through the triangular paper folding block, the paper continues to be turned over by 90 degrees by the horizontal paper folding assembly and the oblique paper folding assembly, and then paper folding is completed. The first drive device is used for regulating the horizontal position of the triangular paper folding device, and the second drive device is used for regulating the vertical position of the triangular paper folding device. The triangular paper folding device is simple in structure, low in cost, convenient and reliable to regulate and high in degree of automation, and improves the paper folding precision.

The invention discloses a three-dimensional paper bag making machine capable of achieving heat sealing. The three-dimensional paper bag making machine comprises a rack, wherein an outer paper roll isarranged at one end of the rack; outer-layer paper on the outer paper roll is conveyed to a film applying mechanism under the guidance of a plurality of guide rollers; the film applying mechanism is provided with a heat sealing film for sealing at a sealing position of each paper bag; a cutting roller is arranged at a lower station of the film applying mechanism; the cutting roller is used for cutting a smooth opening for a fruit stem to pass through on the paper; an upper rubber roller is arranged at a lower station of the cutting roller; a three-dimensional forming mechanism for extruding the paper into a three-dimensional cavity is arranged at a lower station of the upper rubber roller; the paper passes through the three-dimensional forming mechanism, and then the paper bag is pressed to be superposed from top to bottom by a pressing roller; and a bag cutting roller for cutting the continuous paper bag into single paper bags is arranged at a lower station of the pressing roller. Thethree-dimensional paper bag making machine disclosed by the invention is capable of producing single-layer or double-layer paper bags capable of achieving heat sealing, and high in folding precision;and the produced paper bags are suitable for being used on an automatic bagging machine, and have a relatively good market popularization prospect.

The invention relates to a manufacturing method of a composite plastic woven bag. A composite plastic woven bag manufacturing device adopted in the method comprises a bottom plate, a conveying chain plate, a bearing table, a rotating mechanism and a leveling mechanism; the rotating mechanism comprises a rotating motor, a rotating connecting rod, a rotating shaft, a rotating turning plate, a fixedsucker, an air pump, a supporting ring and a supporting plate. The manufacturing method comprises the following steps: S1, unwinding a woven bag roll; S2, conveying the woven bag; S3, overturning thewoven bag; S4, pressing the woven bag; and S5, collecting the woven bag. The problems that in the prior art, size offset is likely to occur when the woven bag is manually folded, the woven bag is folded in half in a staggered mode, and the folded woven bag is prone to wrinkling when the woven bag is folded can be solved.

The invention discloses an automatic folding device for a packaging bag film, and the automatic folding device is provided with a guide creasing roller mechanism, the guide creasing roller mechanism can automatically carry out creasing treatment on the film, subsequent folding is facilitated, the folding precision is improved, and the probability of deviation or folding deviation is reduced. The folding guide wheel mechanism is located between the pressing and folding mechanism and the guide creasing roller mechanism, by means of the folding guide wheel mechanism, a thin film can be folded step by step, the folding effect is improved, the phenomenon that the thin film deviates due to the fact that the angle is too large during folding is prevented, and folding fluency and smoothness are improved; the large folding wheel and the small guide wheel are used for guiding the indentation, meanwhile, the folding precision is further improved, the fold at the folding position is enhanced, and the large folding wheel and the small guide wheel are matched with the folding guide frame to convey the folded film to the folded film pressing and conveying mechanism so that the folded film pressing and conveying mechanism can completely fold and convey the film conveniently. The reliability and stability of folding conveying are improved, and the folding precision is guaranteed.

The invention relates to a device capable of rapidly folding filter paper. The device capable of rapidly folding the filter paper comprises a base bracket which is provided with a downwards pressing transmission structure, a concave paper folding mould, a convex paper folding mould and a reset spring; a downwards pressing handle is arranged on the base bracket; a downwards pressing rolling bearingis fixedly mounted on the downwards pressing handle; the inner ring of the downwards pressing rolling bearing is fixedly connected with the downwards pressing handle through a cylindrical pin; a downwards pressing guide rod capable of moving perpendicularly is arranged on the base bracket along a guide channel; the reset spring is mounted on the downwards pressing guide rod through the guide channel and downwards pressing guide rod limitation; and limiting devices are arranged at the parts, located at the lower end of the guide channel and at the upper end of the reset spring, of the downwards pressing guide rod. Through the professionally designed filter paper folding moulds, the finished filter paper is produced rapidly in bulk, the finished filter paper is high in quality, standardizedand normalized, the manpower and the time are saved, and the device capable of rapidly folding the filter paper has important significance in aspects of improving the detection efficiency, improvingthe detection accuracy, and the like.

The invention discloses a method for automatically folding a medical film box, which comprises the following steps: S1, firstly, placing a paperboard on a worktable mechanism connected to the rear side of a supporting mechanism, and fixing the paperboard between rails fixedly connected to the supporting mechanism after a worktable is lifted; s2, a folding mechanism is driven to fold the unfixed side of the paperboard to the upper side of the track along the edge of the track; s3, a side sealing mechanism is driven to fold the upper side portion of the paperboard, and a paper box is formed; s4, the lower side portion of the paper box is folded upwards by driving a side sealing mechanism to complete side sealing; s5, folding lugs on the two sides of the paper box and the edge of the lower side of the paper box upwards; s6, the supporting mechanism is used for guiding the end of the conveying mechanism, and then the upper edge of the paper box is folded downwards to complete packaging of the bottom of the paper box; the whole packaging process has few folding and sealing actions, so that the packaging process is saved, and the working efficiency of the device is greatly improved; full-automatic folding and sealing can be achieved, the folding and sealing accuracy of the device is improved, and the qualified rate of products of the device is increased.