Medical medium-chain fatty acid ester and method and system for preparing same

Abstract

The application discloses a medical dressing and a preparation method and a preparation system thereof, and belongs to the technical field of medical dressing production. The system comprises a unwinding device, a transverse cutting device, a folding device, a conveying device and a stacking device. The folding device comprises an M-fold structure, a reversing structure, a layered conveying structure, a double-layer folding structure and a collection conveying structure. The transverse cutting device comprises a front clamping conveying structure, a following transverse cutting structure and a rear clamping conveying structure. The unwinding device, the conveying device, the M-fold structure, the reversing structure, the front clamping conveying structure, the following transverse cutting structure, the rear clamping conveying structure, the layered conveying structure, the double-layer folding structure, the collection conveying structure and the stacking device are sequentially arranged from front to back. The patent automatically realizes the production of the medical dressing, and the production speed is high.

Description

Technical Field

[0001] This invention belongs to the field of medical dressing production technology, and specifically relates to a medical dressing and its preparation method and system. Background Technology

[0002] Medical drapes are disposable sheets placed on hospital beds or operating tables. Their main functions are to prevent water and bacteria contamination and maintain cleanliness and hygiene. Current technology allows for the automated production of these drapes.

[0003] For example, patent application number CN202210312125.2 discloses a non-woven fabric single-folding machine, including a horizontally arranged support platform. The left end of the support platform has a conveyor table and an electrical control box. The electrical control box contains a controller, a transmission gear set, and a power motor. The transmission gear set is rotatably mounted on the inner wall of the electrical control box via a support shaft, and the power motor is connected to the transmission gear set. The right end of the support platform has a feeding device and a first folding device. The top of the support platform, from right to left, has a first feeding device, a punching device, a second folding device, and a second... The device comprises a feeding device, a third folding device, a third feeding device, a cutting device, a fourth feeding device, and a fifth feeding device. The fourth folding device is mounted on an electrical control box directly above the fourth feeding device, and the fifth folding device is mounted on an electrical control box directly above the fifth feeding device. The first folding device includes a triangular base plate inclined upwards, with two symmetrically arranged triangular side plates at the top of the base plate. The upper ends of the two side plates intersect to form a horizontal line, and a first guide roller group is located at the top of the two side plates. Both the second and third folding devices include a first... The second folding device support frame has an L-shaped second folding plate at its lower end and a rectangular baffle above it. A gap exists between the baffle and the second folding plate, and one end of the baffle extends beyond the second folding plate. A baffle fixing frame is mounted on the second folding device bracket above the baffle, and the baffle is connected to the baffle fixing frame via a fixing post. The fourth and fifth folding devices have the same structure, both including a rotating shaft. The rotating shaft is rotatably mounted on the electrical control box via bearings, and the end of the rotating shaft extends into the electrical control box. The power mechanism inside the electrical control box is linked. The outer end of the rotating shaft extends out of the electrical control box and a rotating wheel is fixed at the end. A guide block is provided directly below the rotating wheel. One end of the guide block is fixed to the electrical control box, and the other end of the guide block has a vertically set guide hole. A vertically set first connecting rod is slidably connected in the guide hole. A second connecting rod is provided between the first connecting rod and the rotating wheel. The upper end of the second connecting rod is rotatably mounted on the rotating wheel. The lower end of the second connecting rod is hinged to the upper end of the first connecting rod through a connecting shaft. A vertically set pressure plate is fixed to the lower end of the first connecting rod.

[0004] For example, patent application number CN202421231015.4 discloses a nonwoven fabric folding machine, including a support frame. The right end of the support frame has a feeding mechanism for releasing nonwoven fabric. A first folding mechanism is located behind the feeding mechanism. A guide mechanism is located above the first folding mechanism. A first traction mechanism for pulling the nonwoven fabric is located to the left of the guide mechanism. A second folding mechanism is mounted on the support frame to the left of the first traction mechanism. A cutting mechanism for cutting the nonwoven fabric is located to the left of the second folding mechanism. A first conveying mechanism is located to the left of the cutting mechanism. A conveyor belt is located to the left of the first conveying mechanism. A gap for folding the nonwoven fabric exists between the conveyor belt and the first conveying mechanism. The gap is... The system includes a third folding mechanism for folding nonwoven fabric at the top, a second feeding mechanism for conveying nonwoven fabric blocks below the conveyor belt, a fourth folding mechanism for folding nonwoven fabric blocks below the first feeding mechanism, a third feeding mechanism to the left of the fourth feeding mechanism, and a discharge mechanism for conveying nonwoven fabric blocks to the left of the third feeding mechanism. A support platform for supporting nonwoven fabric blocks is provided on the support frame to the left of the discharge mechanism. The second folding mechanism includes a rectangular support frame with several evenly spaced stops from top to bottom. The stops are L-shaped, with the right ends of the stops alternately fixed to two columns at the right end of the support frame, and the left ends of the stops alternately fixed to the columns at the left end of the support frame via support rods.

[0005] For larger medium-sized orders, multiple horizontal and vertical folds are typically required, followed by palletizing after production. The applicant plans to improve existing medium-sized order production equipment to further increase processing speed. Summary of the Invention

[0006] This invention provides a medical liner, its preparation method, and a preparation system, enabling automated and rapid production of the liner. The technical solution is as follows:

[0007] On one hand, embodiments of the present invention provide a medical drape, including a rectangular drape body; the drape body is first folded in the width direction by an M-fold; then folded once in quarter at both ends in the length direction, then folded twice in quarter at both ends in the length direction, and then folded in half; the number of M-folds is 6-18 layers.

[0008] Furthermore, in this embodiment of the invention, one or more single-sided adhesive tapes are provided on the wide side of the single body along the direction of the wide side, and the single-sided adhesive tapes are glued to the same side of the single body.

[0009] On the other hand, embodiments of the present invention also provide a preparation system for medical drapes, including an unwinding device, a cross-cutting device, a folding device, a conveying device, and a palletizing device. The folding device includes an M-fold structure, a reversing structure, a layered conveying structure, a double-layer folding structure, and a consolidation conveying structure. The cross-cutting device includes a front clamping conveying structure, a following cross-cutting structure, and a rear clamping conveying structure. The unwinding device, conveying device, M-fold structure, reversing structure, front clamping conveying structure, following cross-cutting structure, rear clamping conveying structure, layered conveying structure, double-layer folding structure, consolidation conveying structure, and palletizing device are arranged sequentially from front to back. The configuration includes: the M-fold structure for folding the nonwoven fabric in the width direction; the reversing structure for reversing the nonwoven fabric from vertical to horizontal direction; the following cross-cutting structure for following the movement of the nonwoven fabric and cutting it cross-cut; the double-layer folding structure including two longitudinal folding units arranged side by side; the longitudinal folding units for folding the nonwoven fabric multiple times in the length direction and stopping the conveying during folding; the layered conveying structure for alternately feeding the nonwoven fabric to the two longitudinal folding units; and the sum-up conveying structure for summing the outputs from the two longitudinal folding units and sequentially outputting them to the palletizing device.

[0010] Furthermore, the system also includes an adhesive tape applicator and an edge trimming device. The conveying device includes a web guiding structure, a tension adjusting structure, a front roller conveying structure, and a rear roller conveying structure. The unwinding device, web guiding structure, tension adjusting structure, front roller conveying structure, adhesive tape applicator, rear roller conveying structure, edge trimming device, and M-fold structure are arranged sequentially from front to back. The adhesive tape applicator is used to apply single-sided adhesive tape to the upper side of the two wide sides of the nonwoven fabric, and the single-sided adhesive tape is arranged in the front-to-back direction. The edge trimming device is used to trim the left and right sides of the nonwoven fabric. Both ends are trimmed; the adhesive tape device includes a fixed plate, a support roller, and two adhesive units. The fixed plate is located directly above the nonwoven fabric, the support roller is arranged horizontally and located below the nonwoven fabric, and the two adhesive units are respectively located above the left and right ends of the nonwoven fabric; each adhesive unit includes a vertical plate and an adhesive tape unwinding structure, an adhesive tape traction structure, a negative pressure conveyor belt, a horizontal plate, an adhesive spraying structure, a roller cutting structure, and a negative pressure transfer wheel; the vertical plate is arranged vertically along the front-to-back direction and is located above the fixed plate; The horizontal plate and the negative pressure conveyor belt are arranged sequentially from back to front, flush with each other, and both are positioned along the front-to-back direction. The belt traction structure is located between the rear end of the horizontal plate and the belt unwinding structure. The adhesive spraying structure is located directly above the horizontal plate, and the belt unwinding structure is located above and behind the horizontal plate, situated at the rear of the vertical plate. The negative pressure transfer wheel is arranged along the left-to-right direction, positioned adjacent to the front of the negative pressure conveyor belt, with its upper side flush with the negative pressure conveyor belt. Its upper and front sides form the adsorption zone, and it is located directly above the support roller and above the non-woven fabric. Located at the front of the upright plate; the roller cutting structure is located above and in front of the negative pressure transfer wheel, arranged in the left-right direction, tangent to the negative pressure transfer wheel, and used to cut the single-sided adhesive tape on the negative pressure transfer wheel; the single-sided adhesive tape output by the tape unwinding structure is pulled by the tape traction structure to the upper rear end of the horizontal plate, forward along the horizontal plate and the negative pressure conveyor belt to the upper side of the negative pressure transfer wheel, around the front side of the negative pressure transfer wheel, and glued to the upper side of the non-woven fabric on the lower side of the negative pressure transfer wheel; when the single-sided adhesive tape is on the negative pressure conveyor belt, its release paper is on the lower side.

[0011] In this embodiment of the invention, the front clamping conveyor structure includes a front upper conveyor belt and a front lower conveyor belt arranged side by side, and the rear clamping conveyor structure includes a rear upper conveyor belt and a rear lower conveyor belt arranged side by side. The front upper conveyor belt, front lower conveyor belt, rear upper conveyor belt, and rear lower conveyor belt are all arranged in a front-rear direction. The front upper conveyor belt is shorter than the front lower conveyor belt and is located directly above the front end of the front lower conveyor belt. The rear upper conveyor belt is shorter than the rear lower conveyor belt and is located directly above the rear end of the rear lower conveyor belt. The rear lower conveyor belt is flush with the front lower conveyor belt and is located adjacent to and behind the front lower conveyor belt. The lower conveyor belt and the front lower conveyor belt form a horizontal conveying structure; the following cross-cutting structure can move back and forth between the front upper conveyor belt and the rear upper conveyor belt and includes a longitudinal reciprocating drive mechanism, a rectangular frame, a support plate, a cross-cutting pressure plate, a transverse reciprocating drive mechanism, a pressure plate cylinder, a lifting cylinder, and a cutter; the longitudinal reciprocating drive mechanism is located below the horizontal conveying structure and is used to drive the rectangular frame to move back and forth in the front and back directions, and its backward movement speed is matched with the conveying speed of the nonwoven fabric; the rectangular frame is arranged in the left and right directions, with its upper edge located directly above the horizontal conveying structure and its lower edge located directly below the horizontal conveying structure. It is connected to the longitudinal reciprocating drive mechanism, with its two vertical sides located on the left and right sides of the horizontal conveying structure, respectively. The support plate is arranged in the left-right direction, with its front left and right ends fixed to the two vertical sides, and is arranged horizontally in the front-back direction. It is located above the adjacent horizontal conveying structure, and its rear upper side is arranged diagonally downward from front to back. The middle part has a strip-shaped hole for the cutter to pass through in the left-right direction. The transverse reciprocating drive mechanism is located on the upper side of the support plate and can move in the left-right direction. The pressure plate cylinder is arranged vertically downward and is located on the lower side of the support plate. The transverse cutting pressure plate is located directly above the front of the support plate and is located on the pressure plate cylinder. The lower end of the telescopic rod; the lifting cylinder is located behind the horizontal reciprocating drive mechanism and is vertically downward; the cutter is located at the lower end of the telescopic rod of the lifting cylinder, is vertically positioned, is located directly above the strip hole, and has a blade at its left or right end; during transverse cutting, the rectangular frame moves backward at the same speed as the nonwoven fabric, the pressure plate cylinder extends, and the transverse cutting pressure plate presses against the upper side of the nonwoven fabric; then, when the lifting cylinder extends, the cutter is inserted downward into the strip hole and is located above the horizontal conveying structure, and the cutter moves between the left and right sides of the nonwoven fabric to achieve transverse cutting.

[0012] In this embodiment of the invention, the M-fold structure includes a front traction roller, a rear traction roller, an arc-shaped rod, an M-fold mechanism, and a roller-pair composite mechanism arranged sequentially from front to back. The front traction roller is located directly behind the rear roller-pair conveying structure, and the arc-shaped rod is located directly in front of the M-fold mechanism and bends forward in an arc shape. Both the front and rear traction rollers are arranged in a left-right direction. The rear traction roller is located below the front traction roller and the arc-shaped rod. The nonwoven fabric passes sequentially around the upper side of the front traction roller, the lower side of the rear traction roller, and the upper side of the arc-shaped rod. The roller-pair composite mechanism is arranged vertically. The reversing structure includes a reversing roller and a reversing rod. The reversing roller is located directly behind the roller-pair composite mechanism, on the left or right side of the nonwoven fabric, and tilts to the left or right, tilting from bottom to top in the direction of reversal. The reversing rod is arranged horizontally, on the upper side of the nonwoven fabric, and tilts to the left or right from front to back, tilting from front to back in the direction of reversal.

[0013] In this embodiment of the invention, the layered conveying structure includes a layered plate, a layered driving mechanism, a front upper conveyor belt, and a front lower conveyor belt. The converging conveying structure includes a rear upper conveyor belt, a rear lower conveyor belt, and a sliding plate. The layered plate is located adjacent to the rear of the rear clamping conveying structure, and its front end is hinged and can swing between the front upper conveyor belt and the front lower conveyor belt. The layered driving mechanism is used to drive the layered plate to swing up and down. When the layered plate is in a low position, it is arranged obliquely downward from front to back, and it is connected to the front end of the front lower conveyor belt, and it is coplanar with the front lower conveyor belt. When the layered plate is in a high position, it is arranged obliquely upward from front to back, and it is connected to the front end of the front upper conveyor belt, and it is coplanar with the front lower conveyor belt. The front upper conveyor belt is coplanar; the front upper conveyor belt is obliquely upward from front to back and its rear end is connected to the front end of the upper longitudinal folding unit; the front lower conveyor belt is obliquely upward from front to back and its rear end is connected to the front end of the lower longitudinal folding unit; the rear upper conveyor belt is obliquely downward from front to back and its front end is connected to the rear end of the upper longitudinal folding unit; the rear lower conveyor belt is horizontally arranged in the front-rear direction and its front end is connected to the rear end of the lower longitudinal folding unit, located directly below the rear upper conveyor belt; the slide plate is located adjacent to the rear upper conveyor belt, coplanar with the rear upper conveyor belt, located directly above the middle of the rear lower conveyor belt, and located adjacent to the middle piece on the rear lower conveyor belt.

[0014] In this embodiment of the invention, the longitudinal folding unit includes three folding mechanisms arranged sequentially from front to back: a primary 1 / 4 folding mechanism, a secondary 1 / 4 folding mechanism, and a bifurcation mechanism. The layered conveying structure, the primary 1 / 4 folding mechanism, the secondary 1 / 4 folding mechanism, the bifurcation mechanism, and the consolidation conveying structure are arranged sequentially from front to back. Each folding mechanism includes a folding conveyor belt arranged in the front-to-back direction and one or two folding components on it. Each folding component includes a folding flap below the folding conveyor belt that can rotate upwards and two folding pressure plates on the left and right sides of the folding conveyor belt. The folding flap is arranged in the front-to-back direction and can fold one end of the non-woven fabric or fold the entire non-woven fabric in half; it includes two flaps arranged side-by-side and driven synchronously. The folding conveyor belt includes three narrow conveyor belts arranged side-by-side and driven synchronously. All three narrow conveyor belts are arranged in the front-to-back direction and alternate with two flip plates. The middle narrow conveyor belt is narrower than the two narrow conveyor belts at both ends. Two folding pressure plates can move towards or away from each other in the left-to-right direction and can move up and down synchronously. They are used to press the left and right ends of the undone portion of the non-woven fabric and are positioned near the corresponding folding points. During folding, the folding conveyor belt stops conveying. The two folding pressure plates are in a facing state, with one in a lower position, located on the left and right sides of the folding flip plate. The primary 1 / 4 folding machine and the secondary 1 / 4 folding mechanism each include two synchronously driven folding components, which respectively fold the front and rear ends of the non-woven fabric by 1 / 4. The folding mechanism includes one folding component.

[0015] The palletizing device in this embodiment includes a stepping conveyor belt arranged in a front-back direction and conveying material backward in a stepping manner; a limiting plate at the left or right end of the stepping conveyor belt; a transition plate at the front end of the stepping conveyor belt; a horizontal toothed plate adjacent to and rotatably arranged in front of the transition plate; a vertical toothed plate directly above the transition plate; a rotary drive structure for driving the horizontal toothed plate to rotate backward; and a bidirectional drive structure for driving the vertical toothed plate to move forward and backward and vertically. The limiting plate is arranged in a front-back direction and is vertically arranged, located adjacent to the left or right end of the stepping conveyor belt, and located on the left or right side of the middle pallet. The horizontal toothed plate is arranged horizontally in a front-back direction, located adjacent to the rear lower conveyor belt, and is flush with the rear lower conveyor belt. Its rear end is bent upward to form a vertical bend, which can be driven to rotate vertically by the rotary drive structure. The rear side of the bend is connected to the rotary drive structure through a left-right rotating shaft. The transition plate is horizontally arranged in the front-to-back direction, flush with the stepping conveyor belt, and its upper surface is smooth. The vertical toothed plate is vertically arranged, and both the horizontal and vertical toothed plates include multiple teeth arranged side by side with their teeth interlaced. When the horizontal toothed plate rotates to a vertical position, it rests against the front side of the stack of single-layer sheets, and the bent part is flush with the transition plate. The stack of single-layer sheets consists of multiple single-layer sheets arranged side by side, and its rear part can be freely tilted to support the stack. During stacking, the single-layer sheets are sent to the upper side of the horizontal toothed plate by the rear lower conveyor belt. The horizontal toothed plate rotates upward, and the single-layer sheets are transferred to the front side of the stack and arranged vertically. The vertical toothed plate moves upward to the top of the stack of single-layer sheets, and then moves forward, downward, and backward to the front side of the stack of single-layer sheets. At the same time, the stepping conveyor belt moves backward step by step. After the vertical toothed plate presses against the front side of the stack of single-layer sheets, the horizontal toothed plate returns to its original position.

[0016] In another aspect, embodiments of the present invention also provide a method for preparing a medical drape, the method comprising: S1 Adhesive Tape: Single-sided adhesive tape is applied to both ends of the non-woven fabric using an adhesive tape device.

[0017] S2 edge trimming: The left and right ends of the nonwoven fabric are trimmed using an edge trimming device.

[0018] S3M fold: The nonwoven fabric is folded in the left and right directions using an M-fold structure, and the nonwoven fabric after the M-fold is set vertically; the vertical nonwoven fabric is changed to the horizontal direction by a reversing structure.

[0019] S4 Cross-cut: The rectangular frame moves backward at the same speed as the nonwoven fabric, the pressure plate cylinder extends, and the cross-cutting pressure plate presses against the upper side of the nonwoven fabric; then, when the lifting cylinder extends, the cutter is inserted downward into the strip hole and is located above the horizontal conveying structure. The cutter moves between the left and right sides of the nonwoven fabric to achieve cross-cutting.

[0020] S5 Longitudinal Folding: The nonwoven fabric is alternately fed to two longitudinal folding units through a layered conveying structure. The longitudinal folding units are used to fold the front and rear ends of the nonwoven fabric into quarter folds once, fold the front and rear ends into quarter folds twice, and fold the whole fabric in half. The middle sheets output by the two longitudinal folding units are then summarized through a summarizing conveying structure. The middle sheets output by the two longitudinal folding units are alternately set on the summarizing conveying structure.

[0021] S6 Palletizing: The middle sheet is fed to the upper side of the horizontal toothed plate by the rear lower conveyor belt. The horizontal toothed plate rotates upward, and the middle sheet is transferred to the front side of the middle sheet stack and set vertically. The vertical toothed plate moves upward to the top of the middle sheet stack, and then moves forward, downward and backward to the front side of the middle sheet stack. At the same time, the stepping conveyor belt moves backward step by step. After the vertical toothed plate presses against the front side of the middle sheet stack, the horizontal toothed plate returns to its original position.

[0022] The beneficial effects of the technical solution provided by the embodiments of the present invention are as follows: The embodiments of the present invention provide a medical diaphragm and its preparation method and system, which automates the production of the diaphragm, with fast production speed and smooth connection between each device. Specifically, the production speed can reach 100 pieces / minute (the prior art is 40 pieces / minute), and based on a 7-hour workday, it can produce 40,000 pieces / day, with fewer than 3 unexpected or malfunction-related downtimes. Specifically, this patent uses multiple means to improve the processing speed, including: (1) The M-fold method is used for horizontal folding, which can achieve multiple folds in one go and is fast; (2) It adopts a follow-type cross-cutting structure, which eliminates the need to stop the machine for cross-cutting and is fast; (3) A double-layer longitudinal folding structure is adopted (including two longitudinal folding units arranged side by side). The longitudinal folding unit adopts multiple individually controlled folding mechanisms. Each folding mechanism is fast (no need for a complex positioning structure, and can achieve a faster speed). Due to the adoption of a double-layer structure, the machine can be stopped during folding and can also be coordinated with the speed of the upstream and downstream. During longitudinal folding, the machine is pressed by a folding pressure plate to ensure the folding speed. (4) A new type of palletizing device is adopted, which has a fast palletizing speed. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the medical diaphragm preparation system provided in this embodiment of the invention; Figure 2 This is a schematic diagram of the adhesive tape device; Figure 3 This is a schematic diagram of the cross-cutting device; Figure 4 This is a partial structural diagram of the M-fold structure; Figure 5This is a structural diagram showing a combination of a layered conveying structure, a double-layered folding structure, and a combined conveying structure. Figure 6 This is a schematic diagram of the longitudinal folding unit; Figure 7 This is a schematic diagram of the palletizing device; Figure 8 yes Figure 7 A schematic diagram of the structure when the horizontal toothed plate flips upward; Figure 9 yes Figure 8 A schematic diagram of the structure when the vertical toothed plate moves upward and forward; Figure 10 This is a schematic diagram of the folding process of fabric in the horizontal direction; Figure 11 This is a flowchart of the preparation method for medical intramurals.

[0024] In the diagram: 1. Non-woven fabric, 2. Single-layer fabric, 3. Stack of single-layer fabric; 11 Fixed plate, 12 Support roller, 13 Vertical plate, 14 Belt unwinding structure, 15 Belt traction structure, 16 Negative pressure conveyor belt, 17 Horizontal plate, 18 Glue spraying structure, 19 Roll cutting structure, 110 Negative pressure transfer wheel; 21 Front upper conveyor belt, 22 Front lower conveyor belt, 23 Rear upper conveyor belt, 24 Rear lower conveyor belt; 31 Rectangular frame, 32 Longitudinal reciprocating drive mechanism, 33 Support plate, 34 Transverse cutting pressure plate, 35 Lateral reciprocating drive mechanism, 36 Pressure plate cylinder, 37 Lifting cylinder, 38 Cutting knife; 41 Front traction roller, 42 Rear traction roller, 43 Arc rod, 44 Pair roller composite mechanism; 51 Layered board, 52 Front upper conveyor belt, 53 Front lower conveyor belt, 54 Rear upper conveyor belt, 55 Rear lower conveyor belt, 56 Longitudinal folding unit, 57 Slide plate; 61. Folded conveyor belt, 62. Folded flipper, 63. Folded pressure plate; 71 Stepping conveyor belt, 72 Transition plate, 73 Horizontal toothed plate, 74 Vertical toothed plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Example 1 See Figure 10Example 1 provides a medical drape, comprising a rectangular drape body made of non-woven fabric. The drape body is first folded in the width direction (M-fold). Then, it is folded once at each end of the length direction (1 / 4 fold), then twice at each end of the length direction (1 / 4 fold), and finally folded in half, forming an eight-layer structure along the length direction. The number of M-folds is 6-18 layers.

[0027] Furthermore, in this embodiment of the invention, one or more single-sided adhesive tapes are provided on the wide side of the single body along the direction of the wide side, and the single-sided adhesive tapes are glued to the same side of the single body.

[0028] Example 2 Example 2 provides a medical drape, the structure of which is basically the same as that of Example 1, except that: the size of the drape body in this example is 100cm×150cm, M is 8, and the folded size is approximately 12cm×18cm. Two single-sided adhesive tapes are provided along the wide side of the drape body (located at both ends of the wide side respectively), and the four single-sided adhesive tapes are arranged in a rectangular pattern.

[0029] Example 3 See Figure 1-9 Example 3 provides a preparation system for medical diaphragms, which includes an unwinding device, a cross-cutting device, a folding device, a conveying device, a stacking device, an adhesive tape device, and an edge-cutting device.

[0030] The conveying device includes a correction structure (optional), a tension adjustment structure (optional), a front roller conveying structure (optional), and a rear roller conveying structure (optional). The folding device includes an M-fold structure, a reversing structure, a layered conveying structure, a double-layer folding structure, and a summarizing conveying structure. The cross-cutting device includes a front clamping conveying structure, a following cross-cutting structure, and a rear clamping conveying structure.

[0031] The unwinding device, the correction structure, the tension adjustment structure, the front roller conveyor structure, the adhesive tape device, the rear roller conveyor structure, the edge cutting device, the M-fold structure, the reversing structure, the front clamping conveyor structure, the following cross-cutting structure, the rear clamping conveyor structure, the layered conveyor structure, the double-layer folding structure, the summing conveyor structure, and the palletizing device are arranged sequentially from front to back and their speeds are coordinated.

[0032] The nonwoven fabric 1 is equipped with several components: an adhesive tape device for applying single-sided adhesive tape to the upper sides of its two wide edges (specifically, the left and right ends), with the tape positioned along the front-to-back direction; an edge-cutting device for trimming the left and right ends of the nonwoven fabric 1; an M-fold structure for folding the nonwoven fabric 1 in the width direction (specifically, the left and right directions), resulting in a vertical orientation after folding; a reversing structure for reversing the orientation of the nonwoven fabric 1 from vertical to horizontal; a following cross-cutting structure that moves with the nonwoven fabric 1 and performs cross-cutting, enabling continuous cross-cutting to increase processing speed; a double-layer folding structure comprising two vertically arranged longitudinal folding units 56, which perform multiple longitudinal folds of the nonwoven fabric 1 along its length and stop conveying during folding; and a layered conveying structure for alternately feeding the nonwoven fabric 1 to the two longitudinal folding units 56. The consolidation conveyor structure is used to consolidate the outputs of the two longitudinal folding units and sequentially output them to the palletizing device.

[0033] The adhesive tape device includes a fixed plate 11, a support roller 12, and two adhesive units. The fixed plate 11 is located directly above the nonwoven fabric 1 and is fixedly installed. The support roller 12 is arranged in the left-right direction and is located on the lower side of the nonwoven fabric 1. The two adhesive units are respectively located on the upper side of the left and right ends of the nonwoven fabric 1. The adhesive unit includes a vertical plate 13 and an adhesive tape unwinding structure 14, an adhesive tape traction structure 15, a negative pressure conveyor belt 16, a horizontal plate 17, an adhesive spraying structure 18, a roller cutting structure 19, and a negative pressure transfer wheel 110. The vertical plate 13 is arranged in the front-back direction and is vertically positioned above the fixed plate 11. The horizontal plate 17 and the negative pressure conveyor belt 16 are arranged sequentially from back to front (adjacent), are flush, are both arranged in the front-back direction, and are located at the lower part of the vertical plate 13. The adhesive tape traction structure 15 is located between the rear end of the horizontal plate 17 and the adhesive tape unwinding structure 14, and is composed of multiple traction wheels (arranged in the left-right direction). The adhesive spraying structure 18 is located directly above the horizontal plate 17, spraying adhesive towards the single-sided tape, and is specifically arranged diagonally downwards from back to front. The tape unwinding structure 14 is located above and behind the horizontal plate 17, positioned at the rear of the vertical plate 13, and is arranged in a left-right direction. The negative pressure transfer roller 110 is arranged in a left-right direction, located adjacent to and in front of the negative pressure conveyor belt 16, with its upper side flush with the negative pressure conveyor belt 16. Its upper and front sides form the adsorption area. It is located directly above the support roller 12, above the nonwoven fabric 1, and at the front of the vertical plate 13. The roller cutting structure 19 is located above and in front of the negative pressure transfer roller 110, arranged in a left-right direction, and is tangent to the negative pressure transfer roller 110. It is used to cut the single-sided tape on the negative pressure transfer roller 110. The single-sided tape output from the tape unwinding structure 14 is pulled by the tape traction structure 15 to the upper rear end of the horizontal plate 17, and then forward along the horizontal plate 17 and the negative pressure conveyor belt 16 to the upper side of the negative pressure transfer roller 110. It then passes around the front side of the negative pressure transfer roller 110 (cut by the roll cutting structure 19) and is glued to the upper side of the nonwoven fabric 1 on the lower side of the negative pressure transfer roller 110. When the single-sided tape is on the negative pressure conveyor belt 16, its release paper is on the lower side.

[0034] The front clamping conveyor structure includes a front upper conveyor belt 21 and a front lower conveyor belt 22 arranged side-by-side on the upper and lower sides of the nonwoven fabric 1, respectively. The rear clamping conveyor structure includes a rear upper conveyor belt 23 and a rear lower conveyor belt 24 arranged side-by-side on the upper and lower sides of the nonwoven fabric 1, respectively. The front upper conveyor belt 21, front lower conveyor belt 22, rear upper conveyor belt 23, and rear lower conveyor belt 24 are all arranged in a front-rear direction and their speeds are coordinated. The front upper conveyor belt 21 is shorter than the front lower conveyor belt 22 and is located directly above the front end of the front lower conveyor belt 22. The rear upper conveyor belt 23 is shorter than the rear lower conveyor belt 24 and is located directly above the rear end of the rear lower conveyor belt 24. The rear lower conveyor belt 24 is flush with the front lower conveyor belt 22 and is located adjacent to and behind the front lower conveyor belt 22. The rear lower conveyor belt 24 and the front lower conveyor belt 22 form a horizontal conveying structure. The following cross-cutting structure can move back and forth between the front upper conveyor belt 21 and the rear upper conveyor belt 23.

[0035] The following cross-cutting structure includes a longitudinal reciprocating drive mechanism 32, a rectangular frame 31, a support plate 33, a cross-cutting pressure plate 34, a transverse reciprocating drive mechanism 35, a pressure plate cylinder 36, a lifting cylinder 37, and a cutter 38. The longitudinal reciprocating drive mechanism 32 is located below the horizontal conveying structure and drives the rectangular frame 31 to move back and forth. Its backward movement speed matches the conveying speed of the nonwoven fabric 1, and it is specifically a synchronous belt drive structure. The rectangular frame 31 is arranged in the left-right direction and includes a top side, a bottom side, and two vertical sides. Its top side is located directly above the horizontal conveying structure, its bottom side is located directly below the horizontal conveying structure and connected to the longitudinal reciprocating drive mechanism 32 (specifically, a synchronous belt), and its two vertical sides are located on the left and right sides of the horizontal conveying structure, respectively. The support plate 33 is arranged horizontally, with its front left and right ends fixed to two vertical sides respectively. It is horizontally arranged front-to-back, located above the horizontal conveying structure. Its rear (extending out of the rectangular frame 31) is angled downwards from front to back to form a slope. A strip-shaped hole for the cutter 38 to pass through is provided in its middle along the left-to-right direction. The transverse reciprocating drive mechanism 35 is located on the upper side and can move left and right; it is specifically a synchronous belt drive structure or a lead screw drive structure, etc. The pressure plate cylinder 36 is vertically downwards and located in the lower middle of the upper side. The transverse cutting pressure plate 34 is located directly above the front of the support plate 33, at the lower end of the telescopic rod of the pressure plate cylinder 36. It can move up and down and is arranged horizontally; it is specifically a rectangular plate. The lifting cylinder 37 is located behind the transverse reciprocating drive mechanism 35 (specifically a slide block), vertically downwards, and behind the rectangular frame 31. The cutter 38 is located at the lower end of the telescopic rod of the lifting cylinder 37. It is vertically positioned directly above the strip-shaped hole and is a strip-shaped blade with a cutting edge at either its left or right end. During transverse cutting, the rectangular frame 31 moves backward at the same speed as the nonwoven fabric 1, the pressure plate cylinder 36 extends, and the transverse cutting pressure plate 34 presses against the upper side of the nonwoven fabric 1. Then, when the lifting cylinder 37 extends, the cutter 38 is inserted downward into the strip-shaped hole and is positioned above the horizontal conveying structure. The cutter 38 moves between the left and right sides of the nonwoven fabric 1 to achieve transverse cutting.

[0036] The M-fold structure includes, from front to back, a front traction roller 41, a rear traction roller 42, an arc-shaped rod 43, an M-fold mechanism, and a roller-combination mechanism 44. The front traction roller 41 is located directly behind the rear roller conveying structure, and the arc-shaped rod 43 is located directly in front of the M-fold mechanism and bends forward in an arc. Both the front traction roller 41 and the rear traction roller 42 are arranged in a left-right direction. The rear traction roller 42 is located below the front traction roller 41 and the arc-shaped rod 43. The nonwoven fabric 1 passes sequentially over the upper side of the front traction roller 41, the lower side of the rear traction roller 42, and the upper side of the arc-shaped rod 43. The M-fold mechanism is a conventional structure. The roller-combination mechanism 44 is vertically arranged and is used for traction and shaping (combining multiple layers of rollers). The reversing structure includes reversing rollers and reversing rods. The reversing roller is located directly behind the roller composite mechanism 44, to the left or right of the nonwoven fabric 1. It is inclined to the left or right, and tilts from bottom to top in the direction of reversal (the tilt angle is small, with an angle of 5-20° with the vertical direction). The reversing rod is horizontally set on the upper side of the nonwoven fabric 1. It is inclined from front to back to the left or right, and tilts from front to back in the direction of reversal. It is a smooth round rod.

[0037] The layered conveying structure includes a layered plate 51, a layered drive mechanism, a front upper conveyor belt 52, and a front lower conveyor belt 53, etc., while the combined conveying structure includes a rear upper conveyor belt 54, a rear lower conveyor belt 55, and a sliding plate 57, etc. The layered plate 51 is located adjacent to the rear of the rear clamping conveyor structure. Its front end is hinged (via a left-right rotating shaft) and can swing between the front upper conveyor belt 52 and the front lower conveyor belt 53. Its surface is smooth, and its length is 5-15cm. The layered drive mechanism, specifically a cylinder, drives the layered plate 51 to swing up and down. When the layered plate 51 is in the low position, it is angled downwards from front to back, connecting with the front end of the front lower conveyor belt 53, and is coplanar with it. When the layered plate 51 is in the high position, it is angled upwards from front to back, connecting with the front end of the front upper conveyor belt 52, and is coplanar with it. The front upper conveyor belt 52 is arranged diagonally upward from front to back, and its rear end connects to the front end of the upper longitudinal folding unit 56. The front lower conveyor belt 53 is arranged diagonally upward from front to back, and its rear end connects to the front end of the lower longitudinal folding unit 56. The rear upper conveyor belt 54 is arranged diagonally downward from front to back, and its front end connects to the rear end of the upper longitudinal folding unit 56. The rear lower conveyor belt 55 is arranged horizontally in the front-to-back direction, and its front end connects to the rear end of the lower longitudinal folding unit 56. It is located directly below the rear upper conveyor belt 54 and extends rearward relative to the rear upper conveyor belt 54. The slide plate 57 is located adjacent to and behind the rear upper conveyor belt 54. It is coplanar with the rear upper conveyor belt 54. It is located directly above the middle part of the rear lower conveyor belt 55 and adjacent to and above the middle strip 2 on the rear lower conveyor belt 55. Its upper surface is smooth and its length is relatively short (less than 10cm).

[0038] The longitudinal folding unit 56 includes three folding mechanisms arranged sequentially from front to back: a first-stage quarter-fold mechanism, a second-stage quarter-fold mechanism, and a folding mechanism. Each of the three folding mechanisms is individually controlled (via photoelectric sensors) to improve folding speed, and the pause times can be set approximately the same. The layered conveying structure, the first-stage quarter-fold mechanism, the second-stage quarter-fold mechanism, the folding mechanism, and the consolidation conveying structure are arranged sequentially from front to back.

[0039] The folding mechanism includes a folding conveyor belt 61 arranged in the front-to-back direction and one or two folding components on it. Both the primary 1 / 4 folding machine and the secondary 1 / 4 folding mechanism include two folding components driven synchronously (specifically, the rear folding component is used to fold the rear end of the item to be folded forward, and the front folding component is used to fold the front end of the item to be folded backward). The two folding components respectively fold the front and rear ends of the nonwoven fabric 1 in quarters. The folding mechanism includes one folding component.

[0040] The folding assembly includes a folding flap 62 located below the folding conveyor belt 61 and capable of rotating upwards, and two folding pressure plates 63 on the left and right sides of the folding conveyor belt 62. The folding flap 62 is arranged in the front-to-back direction and can fold one end (front or rear) of the nonwoven fabric 1 (rotating approximately 180° (slightly less)) or fold the entire nonwoven fabric 1 in half (rotating approximately 180° (slightly less)). It includes two flaps arranged side-by-side and driven synchronously (arranged in the front-to-back direction). The folding conveyor belt 61 includes three narrow conveyor belts arranged side-by-side and driven synchronously (each end (front or rear) is wound around the same drive shaft). All three narrow conveyor belts are arranged in the front-to-back direction and alternate with the two flaps. The narrow conveyor belt in the middle is narrower than the two narrow conveyor belts at both ends. The two folding pressure plates 63 can move towards or away from each other in the left-to-right direction and can move synchronously up and down, used to press the left and right ends of the undone portion of the nonwoven fabric 1. The folding pressure plates 63 are horizontally arranged in the left-right direction, and are positioned near the corresponding folding points. When folding, the folding conveyor belt 61 stops conveying. The two folding pressure plates 63 are in a facing state with the lower one located, and are situated on the left and right sides of the folding flap 62.

[0041] The palletizing device includes a stepping conveyor belt 71, a limiting plate, a transition plate 72, a horizontal toothed plate 73, a vertical toothed plate 74, a rotary drive structure, and a bidirectional drive structure. The stepping conveyor belt 71 is arranged in the front-back direction and can transport materials backward in a stepping manner (ensuring the front position of the single stack 3 remains unchanged, and the stepping distance is approximately equal to the thickness of the single stack 2). The limiting plate is arranged in the front-back direction, vertically positioned, and located adjacent to the left or right end of the stepping conveyor belt 71, on the left or right side of the single stack 3. The transition plate 72 is arranged horizontally in the front-back direction, flush with the stepping conveyor belt 71, with a smooth upper surface, and is located adjacent to the front of the stepping conveyor belt 71, with a relatively short length (less than 3 cm). The horizontal toothed plate 73 is located adjacent to and in front of the transition plate 72, horizontally arranged in the front-to-back direction. It is located adjacent to and behind the rear lower conveyor belt 55, flush with the rear lower conveyor belt 55. Its rear end is bent upward to form a vertical bend (short in length, 1-2.5cm), which can rotate backward and can be driven to rotate vertically by a rotary drive structure. The rear side of the bend is connected to the rotary drive structure via a left-to-right rotating shaft. The rotary drive structure is used to drive the horizontal toothed plate 73 to rotate backward. The vertical toothed plate 74 is vertically arranged in the left-to-right direction, located directly above the transition plate 72, between the first and second pieces of the single stack 3 (counting from front to back). It can move forward and backward (to the front of the single stack 3) and vertically (to the top of the single stack 3). A bidirectional drive structure is used to drive the vertical toothed plate 74 to move forward and backward and vertically. Both the horizontal toothed plate 73 (open to the front, with teeth arranged in a front-to-back direction) and the vertical toothed plate 74 (open to the bottom, with teeth arranged vertically) include multiple teeth arranged side by side with their teeth interlaced. When the horizontal toothed plate 73 rotates to a vertical position, it rests against the front side of the single stack 3, with its bent portion flush with the transition plate 72 and its rear end adjacent to the front end of the transition plate 72. The single stack 3 is composed of multiple single sheets 2 arranged side by side, with its rear end freely tilted to support the single stack 3 (preventing it from tipping over). During stacking, the single sheets 2 are conveyed to the upper side of the horizontal toothed plate 73 by the rear lower conveyor belt 55. The horizontal toothed plate 73 rotates upward, and the single sheets 2 are transferred to the front side of the single stack 3 and arranged vertically. The vertical toothed plate 74 moves upward to above the middle stack 3, then moves forward, downward and backward to the front side of the middle stack 3. At the same time, the stepping conveyor belt 71 moves backward in a stepping motion. After the vertical toothed plate 74 presses against the front side of the middle stack 3, the horizontal toothed plate 73 returns to its original position (rotates to the horizontal).

[0042] Example 4 See Figure 1-11 Example 4 provides a method for preparing a medical drape, using the medical drape preparation system disclosed in Example 3. The method includes: S1 Adhesive Tape: Adhesive tape is applied to the left and right ends of the upper side of the nonwoven fabric 1 using an adhesive tape device. This step is optional.

[0043] S2 Edge Trimming: The left and right ends of the nonwoven fabric 1 are trimmed by the edge trimming device. This step is optional. Specifically, the single-sided adhesive tape output from the tape unwinding structure 14 is pulled by the tape traction structure 15 to the upper rear end of the horizontal plate 17, moves forward along the horizontal plate 17 and the negative pressure conveyor belt 16 to the upper side of the negative pressure transfer wheel 110, passes around the front side of the negative pressure transfer wheel 110, and is glued to the upper side of the nonwoven fabric 1 on the lower side of the negative pressure transfer wheel 110. When the single-sided adhesive tape is on the negative pressure conveyor belt 16, its release paper is on the lower side.

[0044] S3M fold: The nonwoven fabric 1 is folded (horizontally) in the left and right directions using the M-fold structure, and the nonwoven fabric 1 is set vertically after the M-fold; the vertical nonwoven fabric 1 is changed to the horizontal direction by the reversing structure.

[0045] S4 Cross-cutting: Cross-cutting is performed using a combination of a front clamping conveyor structure, a following cross-cutting structure, and a rear clamping conveyor structure. The specific process is as follows: The rectangular frame 31 moves backward at the same speed as the nonwoven fabric 1, the pressure plate cylinder 36 extends, and the cross-cutting pressure plate 34 presses against the upper side of the nonwoven fabric 1. Then, when the lifting cylinder 37 extends, the cutter 38 is inserted downward into the strip hole and is positioned above the horizontal conveying structure. The cutter 38 moves between the left and right sides of the nonwoven fabric 1 to achieve cross-cutting.

[0046] S5 Longitudinal Folding: Longitudinal folding is achieved using a combination of a layered conveying structure, a double-layer folding structure, and a consolidation conveying structure. The specific process is as follows: The non-woven fabric 1 is alternately fed to two longitudinal folding units 56 via the layered conveying structure (by the back-and-forth oscillation of the layered plate 51). The longitudinal folding units 56 sequentially perform a 1 / 4 fold on each of the front and rear ends of the non-woven fabric 1, a second 1 / 4 fold on each of the front and rear ends, and a full fold. The consolidation conveying structure then consolidates the middle sheets 2 output from the two longitudinal folding units. On the consolidation conveying structure, the middle sheets 2 output from the two longitudinal folding units 2 are alternately set and sequentially sent out.

[0047] S6 Palletizing: The palletizing device is used to palletize the middle single sheet 2 to obtain the middle single sheet stack 3. The specific process is as follows: The middle single sheet 2 is sent to the upper side of the horizontal toothed plate 73 by the rear lower conveyor belt 55. The horizontal toothed plate 73 rotates upward, and the middle single sheet 2 is transferred to the front side of the middle single sheet stack 3 and set vertically. The vertical toothed plate 74 moves upward to the top of the middle single sheet stack 3, and then moves forward, downward and backward to the front side of the middle single sheet stack 3. At the same time, the stepping conveyor belt 71 steps backward. After the vertical toothed plate 74 presses against the front side of the middle single sheet stack 3, the horizontal toothed plate 73 returns to its original position.

[0048] Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A medical drape, comprising a rectangular drape body; characterized in that, The single body is first folded in the width direction (M-fold); then folded once in the length direction at both ends, then folded twice in the length direction at both ends, and then folded in half; the number of M-folds is 6-18 layers.

2. The medical drape according to claim 1, characterized in that, One or more single-sided adhesive tapes are provided along the direction of the wide side of the single body, and the single-sided adhesive tapes are glued to the same side of the single body.

3. A preparation system for medical drapes, comprising an unwinding device, a cross-cutting device, a folding device, a conveying device, and a palletizing device; characterized in that, The folding device includes an M-fold structure, a reversing structure, a layered conveying structure, a double-layer folding structure, and a sum-up conveying structure; the transverse cutting device includes a front clamping conveying structure, a following transverse cutting structure, and a rear clamping conveying structure. The unwinding device, conveying device, M-fold structure, reversing structure, front clamping conveying structure, following cross-cutting structure, rear clamping conveying structure, layered conveying structure, double-layer folding structure, summarizing conveying structure and palletizing device are arranged sequentially from front to back. The M-fold structure is used to fold the nonwoven fabric (1) in the width direction. The reversing structure changes the direction of the nonwoven fabric (1) from vertical to horizontal. The following cross-cutting structure follows the movement of the nonwoven fabric (1) and cuts the nonwoven fabric (1) cross-cut. The double-layer folding structure includes two longitudinal folding units (56) arranged side by side. The longitudinal folding unit (56) is used to fold the nonwoven fabric (1) multiple times in the length direction and stops conveying when folding. The layered conveying structure is used to alternately feed the nonwoven fabric (1) to the two longitudinal folding units (56). The sum-up conveying structure is used to summarize the middle sheets (2) output by the two longitudinal folding units and output them sequentially to the palletizing device.

4. The medical drape preparation system according to claim 3, characterized in that, The system also includes a tape-adhesive device and an edge-cutting device. The conveying device includes a correction structure, a tension adjustment structure, a front roller conveying structure, and a rear roller conveying structure. The unwinding device, correction structure, tension adjustment structure, front roller conveying structure, tape-adhesive device, rear roller conveying structure, edge-cutting device, and M-folding structure are arranged sequentially from front to back. The tape-adhesive device is used to adhere single-sided tape to the upper side of the two wide sides of the nonwoven fabric (1). The single-sided tape is arranged along the front-back direction. The edge-cutting device is used to perform edge-cutting operations on the left and right ends of the nonwoven fabric (1). The adhesive tape device includes a fixed plate (11), a support roller (12), and two adhesive units. The fixed plate (11) is located directly above the nonwoven fabric (1). The support roller (12) is arranged in the left-right direction and is located on the lower side of the nonwoven fabric (1). The two adhesive units are respectively located on the upper side of the left and right ends of the nonwoven fabric (1). The adhesive unit includes a vertical plate (13) and an adhesive tape unwinding structure (14), an adhesive tape traction structure (15), a negative pressure conveyor belt (16), a horizontal plate (17), an adhesive spraying structure (18), a roller cutting structure (19), and a negative pressure transfer wheel (110) on it. The vertical plate (13) is arranged in the front-back direction and is vertically arranged on the upper side of the fixed plate (11). The horizontal plate (17) and the negative pressure conveyor belt (16) are arranged sequentially from back to front, are flush, and are both arranged in the front-back direction. The adhesive tape The traction structure (15) is located between the rear end of the horizontal plate (17) and the tape unwinding structure (14). The adhesive spraying structure (18) is located directly above the horizontal plate (17). The tape unwinding structure (14) is located above and behind the horizontal plate (17) and is located at the rear of the vertical plate (13). The negative pressure transfer wheel (110) is arranged in the left-right direction and is located adjacent to the front of the negative pressure conveyor belt (16). Its upper side is flush with the negative pressure conveyor belt (16). Its upper and front sides are adsorption areas. It is located directly above the support roller (12) and above the nonwoven fabric (1). It is located at the front of the vertical plate (13). The roller cutting structure (19) is located above and in front of the negative pressure transfer wheel (110). It is arranged in the left-right direction and is tangent to the negative pressure transfer wheel (110). It is used to cut the single-sided tape on the negative pressure transfer wheel (110). The single-sided tape output by the tape unwinding structure (14) is pulled by the tape traction structure (15) to the upper rear end of the horizontal plate (17), and moves forward along the horizontal plate (17) and the negative pressure conveyor belt (16) to the upper side of the negative pressure transfer wheel (110), passes around the front side of the negative pressure transfer wheel (110), and is glued to the upper side of the nonwoven fabric (1) on the lower side of the negative pressure transfer wheel (110); when the single-sided tape is on the negative pressure conveyor belt (16), its release paper is on the lower side.

5. The medical drape preparation system according to claim 3, characterized in that, The front clamping conveyor structure includes a front upper conveyor belt (21) and a front lower conveyor belt (22) arranged side by side, and the rear clamping conveyor structure includes a rear upper conveyor belt (23) and a rear lower conveyor belt (24) arranged side by side. The front upper conveyor belt (21), the front lower conveyor belt (22), the rear upper conveyor belt (23), and the rear lower conveyor belt (24) are all arranged in the front-rear direction. The front upper conveyor belt (21) is shorter than the front lower conveyor belt (22) and is located directly above the front end of the front lower conveyor belt (22). The rear upper conveyor belt (23) is shorter than the rear lower conveyor belt (24) and is located directly above the rear end of the rear lower conveyor belt (24). The rear lower conveyor belt (24) is flush with the front lower conveyor belt (22) and is located adjacent to the rear of the front lower conveyor belt (22). The rear lower conveyor belt (24) and the front lower conveyor belt (22) constitute a horizontal conveying structure. The following cross-cutting structure can move back and forth between the front upper conveyor belt (21) and the rear upper conveyor belt (23) and includes a longitudinal back-and-forth drive mechanism (32), a rectangular frame (31), a support plate (33), a cross-cutting pressure plate (34), a transverse back-and-forth drive mechanism (35), a pressure plate cylinder (36), a lifting cylinder (37), and a cutter (38); the longitudinal back-and-forth drive mechanism (32) is located below the horizontal conveying structure and is used to drive the rectangular frame (31) to move back and forth in the front and back directions. Its backward movement speed is matched with the conveying speed of the nonwoven fabric (1); the rectangular frame (31) is arranged in the left and right directions, with its upper side located directly above the horizontal conveying structure and its lower side located directly below the horizontal conveying structure and connected to the longitudinal back-and-forth drive mechanism (32). Its two vertical sides are located on the left and right sides of the horizontal conveying structure, respectively; the support plate (33) The front and rear ends of the device are fixed to two vertical sides, and the device is horizontally positioned above the horizontal conveying structure. The upper rear side is obliquely downward from front to back. The middle part has a strip hole for the cutter (38) to pass through along the left and right sides. The horizontal reciprocating drive mechanism (35) is located on the upper side and can move left and right. The pressure plate cylinder (36) is vertically downward and located on the lower side of the device. The cross-cutting pressure plate (34) is located directly above the front of the support plate (33) and is located at the lower end of the telescopic rod of the pressure plate cylinder (36). The lifting cylinder (37) is located on the rear side of the horizontal reciprocating drive mechanism (35) and is vertically downward. The cutter (38) is located at the lower end of the telescopic rod of the lifting cylinder (37), is vertically positioned, is located directly above the strip hole, and has a blade at its left or right end. During transverse cutting, the rectangular frame (31) moves backward at the same speed as the nonwoven fabric (1), the pressure plate cylinder (36) extends, and the transverse cutting pressure plate (34) presses against the upper side of the nonwoven fabric (1); then, when the lifting cylinder (37) extends, the cutter (38) is inserted downward into the strip hole and is located above the horizontal conveying structure, and the cutter (38) moves between the left and right sides of the nonwoven fabric (1) to achieve transverse cutting.

6. The medical drape preparation system according to claim 3, characterized in that, The M-fold structure includes a front traction roller (41), a rear traction roller (42), an arc-shaped rod (43), an M-fold mechanism, and a roller-pair composite mechanism (44) arranged sequentially from front to back. The front traction roller (41) is located directly behind the rear roller-pair conveying structure. The arc-shaped rod (43) is located directly in front of the M-fold mechanism and bends forward in an arc shape. The front traction roller (41) and the rear traction roller (42) are both arranged in the left-right direction. The rear traction roller (42) is located below the front traction roller (41) and the arc-shaped rod (43). The nonwoven fabric (1) passes sequentially over the upper side of the front traction roller (41), the lower side of the rear traction roller (42), and the upper side of the arc-shaped rod (43). The roller-pair composite mechanism (44) is arranged vertically. The reversing structure includes a reversing roller and a reversing rod; the reversing roller is located directly behind the roller composite mechanism (44), on the left or right side of the nonwoven fabric (1), and is inclined to the left or right, and is inclined from bottom to top in the direction of reversal; the reversing rod is horizontally arranged, located on the upper side of the nonwoven fabric (1), and is inclined from front to back to the left or right, and is inclined from front to back in the direction of reversal.

7. The medical drape preparation system according to claim 5, characterized in that, The layered conveying structure includes a layered plate (51), a layered driving mechanism, a front upper conveyor belt (52), and a front lower conveyor belt (53). The converging conveying structure includes a rear upper conveyor belt (54), a rear lower conveyor belt (55), and a sliding plate (57). The layered plate (51) is located adjacent to the rear clamping conveying structure, and its front end is hinged and can swing between the front upper conveyor belt (52) and the front lower conveyor belt (53). The layered driving mechanism is used to drive the layered plate (51) to swing up and down. When the layered plate (51) is in a low position, the layered plate (51) is arranged diagonally downward from front to back, and it is connected to the front end of the front lower conveyor belt (53), and it is coplanar with the front lower conveyor belt (53). When the layered plate (51) is in a high position, the layered plate (51) is arranged diagonally upward from front to back, and it is connected to the front end of the front upper conveyor belt (52), and it is coplanar with the front upper conveyor belt (53). The conveyor belts (52) are coplanar; the front upper conveyor belt (52) is arranged obliquely upward from front to back and its rear end is connected to the front end of the upper longitudinal folding unit (56); the front lower conveyor belt (53) is arranged obliquely upward from front to back and its rear end is connected to the front end of the lower longitudinal folding unit (56); the rear upper conveyor belt (54) is arranged obliquely downward from front to back and its front end is connected to the rear end of the upper longitudinal folding unit (56); the rear lower conveyor belt (55) is arranged horizontally in the front-back direction and its front end is connected to the rear end of the lower longitudinal folding unit (56), and it is located directly below the rear upper conveyor belt (54); the slide plate (57) is located adjacent to the rear upper conveyor belt (54), it is coplanar with the rear upper conveyor belt (54), it is located directly above the middle part of the rear lower conveyor belt (55), and it is located adjacent to the middle strip (2) on the rear lower conveyor belt (55).

8. The medical drape preparation system according to claim 7, characterized in that, The longitudinal folding unit (56) includes three folding mechanisms arranged sequentially from front to back. The three folding mechanisms are a first 1 / 4 folding mechanism, a second 1 / 4 folding mechanism, and a folding mechanism. The layered conveying structure, the first 1 / 4 folding mechanism, the second 1 / 4 folding mechanism, the folding mechanism, and the summative conveying structure are arranged sequentially from front to back. The folding mechanism includes a folding conveyor belt (61) arranged in the front-to-back direction and one or two folding components on it. The folding components include a folding flap (62) below the folding conveyor belt (61) and capable of rotating upwards, and two folding pressure plates (63) on the left and right sides of the folding conveyor belt (62). The folding flap (62) is arranged in the front-to-back direction and can fold one end of the nonwoven fabric (1) or fold the nonwoven fabric (1) in half as a whole. It includes two flaps arranged side by side and driven synchronously. The folding conveyor belt (61) includes three narrow conveyor belts arranged side by side and driven synchronously. The three narrow conveyor belts are all arranged in the front-to-back direction and are alternately arranged with the two flaps. The narrow conveyor belt at the front is narrower than the two narrow conveyor belts at both ends; the two folding pressure plates (63) can move towards each other or away from each other in the left and right directions, and can move up and down synchronously. They are used to press the left and right ends of the folded part of the nonwoven fabric (1) tightly, and are set close to the corresponding folding point; when folding, the folding conveyor belt (61) stops conveying; the two folding pressure plates (63) are in a facing state and are located at a lower position, located on the left and right sides of the folding flip plate (62); the first 1 / 4 folding machine and the second 1 / 4 folding mechanism both include two folding components driven synchronously, and the two folding components respectively fold the front and rear ends of the nonwoven fabric (1) by 1 / 4; the folding mechanism includes one folding component.

9. The medical drape preparation system according to claim 7, characterized in that, The palletizing device includes a stepping conveyor belt (71) arranged in a front-back direction and conveying material backward in a stepping manner, a limiting plate at the left or right end of the stepping conveyor belt (71), a transition plate (72) at the front end of the stepping conveyor belt (71), a horizontal toothed plate (73) adjacent to and rotatably arranged in front of the transition plate (72), a vertical toothed plate (74) directly above the transition plate (72), a rotary drive structure for driving the horizontal toothed plate (73) to rotate backward, and a bidirectional drive structure for driving the vertical toothed plate (74) to move forward and backward and vertically; the limiting plate is arranged in a front-back direction and is vertically arranged, located adjacent to and above the left or right end of the stepping conveyor belt (71), and is located in the middle of the single pallet. (3) to the left or right; the horizontal toothed plate (73) is arranged horizontally in the front-back direction, located adjacent to the rear of the rear lower conveyor belt (55), and is flush with the rear lower conveyor belt (55). Its rear end is bent upward to form a vertical bend, which can be driven to rotate vertically by the rotary drive structure; the rear side of the bend is connected to the rotary drive structure through a left-right rotating shaft; the transition plate (72) is arranged horizontally in the front-back direction, and is flush with the stepping conveyor belt (71), and its upper surface is smooth; the vertical toothed plate (74) is arranged vertically, and both the horizontal toothed plate (73) and the vertical toothed plate (74) include multiple teeth arranged side by side on the left and right, and their teeth are staggered; When the horizontal toothed plate (73) is rotated to vertical, the horizontal toothed plate (73) rests against the front side of the middle stack (3), and the bent part is flush with the transition plate (72); the middle stack (3) is composed of multiple middle stacks (2) arranged side by side, and its rear part is freely tilted to support the middle stack (3). During stacking, the middle sheet (2) is fed to the upper side of the horizontal toothed plate (73) by the rear lower conveyor belt (55). The horizontal toothed plate (73) rotates upward, and the middle sheet (2) is transferred to the front side of the middle sheet stack (3) and set vertically. The vertical toothed plate (74) moves upward to the top of the middle sheet stack (3), and then moves forward, downward and backward to the front side of the middle sheet stack (3). At the same time, the stepping conveyor belt (71) moves backward step by step. After the vertical toothed plate (74) presses against the front side of the middle sheet stack (3), the horizontal toothed plate (73) returns to its original position.

10. A method for preparing a medical drape using the medical drape preparation system as described in any one of claims 4-9, characterized in that, The method includes: S1 Adhesive tape: Adhesive tape is applied to the left and right ends of the non-woven fabric (1) using an adhesive tape device; S2 edge trimming: The left and right ends of the nonwoven fabric (1) are trimmed by the edge trimming device; S3M fold: The nonwoven fabric (1) is folded in the left and right directions by the M fold structure, and the nonwoven fabric (1) after the M fold is set vertically; the vertical nonwoven fabric (1) is changed to the horizontal direction by the reversal structure; S4 Cross-cut: The rectangular frame (31) moves backward at the same speed as the nonwoven fabric (1), the pressure plate cylinder (36) extends, and the cross-cutting pressure plate (34) presses against the upper side of the nonwoven fabric (1); then, when the lifting cylinder (37) extends, the cutter (38) is inserted downward into the strip hole and is located above the horizontal conveying structure. The cutter (38) moves between the left and right sides of the nonwoven fabric (1) to achieve cross-cutting. S5 Longitudinal folding: The nonwoven fabric (1) is alternately fed to two longitudinal folding units (56) through a layered conveying structure. The longitudinal folding unit (56) is used to fold the front and rear ends of the nonwoven fabric (1) once, fold the front and rear ends twice, and fold the whole fabric in half. Then, the middle sheets (2) output by the two longitudinal folding units are summarized through a summarizing conveying structure. The middle sheets (2) output by the two longitudinal folding units (2) are alternately set on the summarizing conveying structure. S6 palletizing: The middle sheet (2) is sent to the upper side of the horizontal toothed plate (73) by the rear lower conveyor belt (55). The horizontal toothed plate (73) rotates upward, and the middle sheet (2) is transferred to the front side of the middle sheet stack (3) and set vertically. The vertical toothed plate (74) moves upward to the top of the middle sheet stack (3), and then moves forward, downward and backward to the front side of the middle sheet stack (3). At the same time, the stepping conveyor belt (71) moves backward step by step. After the vertical toothed plate (74) presses against the front side of the middle sheet stack (3), the horizontal toothed plate (73) returns to its original position.

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