Medical chitosan dressing processing technology

Abstract

The invention relates to the technical field of chitosan dressing processing, and discloses a medical chitosan dressing processing technology which comprises the following steps: acquiring a coiled material for packaging a medical chitosan dressing, and detecting whether the supplied coiled material is used up or not; when the supply coiled material is used up, the replacement coiled material and the supply coiled material are connected through an adhesive; the connection length of the coiled materials is set and recorded as the connection length; an auxiliary shaft used for assisting connection of the replacement coiled material and the supply coiled material is arranged; executing a timing duration calculation strategy to obtain a timing duration, and pushing the auxiliary shaft to connect the supply coiled material and the replacement coiled material after the timing duration after the first moment; a same tension maintaining strategy is executed, and the tension of the supplied coiled material and the tension of the replaced coiled material are kept the same in the connecting process; the replacement coiled material is unwound according to the calculated linear speed, a tail end connection strategy is executed, and the coiled material clamped in the clamping mechanism is connected with the replacement coiled material; the strength of the connecting coiled material is enhanced, interruption of the production process is avoided, and efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of chitosan dressing processing, in particular to a medical chitosan dressing processing technology. Background Art

[0002] Chitosan is extracted from the shells of crustaceans. It has excellent biodegradability and non-toxicity, meeting the requirements of modern medicine for materials. The role of this dressing is mainly reflected in promoting wound healing, reducing the risk of infection and relieving pain. Chitosan can form a protective film to keep the wound moist, promote cell regeneration, and improve local immunity by releasing bioactive substances. When packaging chitosan dressings, roll replacement technology has gradually become a key link to meet the dual requirements of production efficiency and material performance. Roll replacement mainly involves the selection and application of packaging materials, usually including the combination of polymer films, non-woven fabrics and other functional materials.

[0003] The existing coil replacement process is to connect the new coil and the old coil with adhesive when it is detected that the remaining amount of coil reaches a set threshold. After the connection is completed, the old coil is cut off and the new coil is used to replace the old coil. At this time, the coil on the old coil is not used up, resulting in waste. At the same time, the connection process does not take into account the different tensions between the new coil and the old coil, which causes the new coil to deform. When the old coil is cut, the elastic force of the old coil is suddenly released, causing deformation at the cut, both of which will cause the coil at the connection to fail to meet the standards.

[0004] This solution proposes that when it is determined that the supply coil is exhausted, an auxiliary shaft is used to assist in connecting the supply coil and the replacement coil, and at the same time, the same tension maintenance strategy is implemented. During the connection process, the tension on the replacement coil and the supply coil is kept the same. Finally, the coil in the clamping mechanism is released, and the end connection strategy is implemented to connect the released coil and the replacement coil. Summary of the invention

[0005] The present invention provides a processing technology for medical chitosan dressing, which is used to promote solving the problems mentioned in the above background technology.

[0006] The present invention provides the following technical solution: a medical chitosan dressing processing technology, comprising: Obtaining a roll material for packaging a medical chitosan dressing, wherein the roll material is divided into a supply roll material and a replacement roll material; A clamping mechanism is added to the shaft of the supply coil, wherein the clamping mechanism includes a groove in which a cylinder is used to clamp one end of the supply coil; Check whether the supplied coil is exhausted; When the supply coil is exhausted, the replacement coil and the supply coil are connected using an adhesive; The specific method is: Set the length of the coil connection, recorded as the connection length; An auxiliary shaft is provided for assisting the replacement of coils and the connection of the supply coils; The moment when the supply coil is detected to be exhausted is recorded as the first moment; Execute the timing duration calculation strategy to obtain the timing duration, wherein the auxiliary shaft is pushed to connect the supply coil and the replacement coil after the timing duration has elapsed after the first moment; Implement the same tension maintenance strategy to keep the tension of the supply coil and the replacement coil the same during the connection process; Obtain the linear speed of the supply coil, execute the proportional calculation strategy, and calculate the linear speed of the replacement coil; The replacement coil is unwound at the calculated line speed. When the replacement coil is connected to the supply coil, the end connection strategy is executed to connect the coil clamped in the clamping mechanism with the replacement coil.

[0007] Optionally, the detecting whether the supplied coil is exhausted includes: A plane parallel to the horizontal plane is made through the axis of the supply coil and is recorded as the horizontal plane; The horizontal plane divides the supply coil into two parts, the first section coil and the second section coil. Segment roll material; Obtaining a tangent line tangent to a plane formed by the wound supply coil and the unwound supply coil, which is recorded as a transition line, wherein the transition line is located at the second segmented coil; The direction in which the supply coil is stretched is recorded as the stretching direction; Draw a straight line through the midpoint of the axis of the supply coil pointing to the ground, which is recorded as the vertical straight line; The angle between the straight line where the stretching direction is located and the vertical straight line direction is an acute angle; A plane is made vertically downward through the axis of the supply coil, which is recorded as the vertical plane; The vertical plane divides the supply coil into two parts, and the part containing the transition line is recorded as the third segmented coil. The other part is recorded as the fourth section coil; A straight line parallel to the horizontal plane and perpendicular to the vertical plane is drawn through the midpoint of the axis of the supply coil, which is recorded as the horizontal straight line; photographing the fourth segmented coil on the horizontal straight line at a viewing angle perpendicular to the vertical plane; Get the captured picture and make judgment on it: When the coil on the supply coil is exhausted, a separation line segment is formed between the remaining material of the supply coil and the shaft; The dividing line segment is recorded as the dividing line; Determine whether a dividing line appears on the image; If a dividing line appears, it is considered that the coil is exhausted; If no dividing line appears, it is deemed that the coil has not been used up.

[0008] Optionally, the auxiliary shaft provided for assisting the connection between the replacement coil and the supply coil includes: Obtaining an axis for supplying coiled material, denoted as supply axis, wherein the shape of the supply axis is a cylinder; Place the supply shaft and the auxiliary shaft in parallel so that the axes of the supply shaft and the auxiliary shaft are in the same horizontal plane; A plurality of rows of protruding nails are arranged on the auxiliary shaft for reinforcing the connection between the supply coil and the replacement coil.

[0009] Optionally, the execution timing duration calculation strategy includes: Get the connection length; Get any bottom surface of the supply axis; Get the radius of the bottom surface, recorded as the supply radius; Calculate 360°*connection length / (2* * supply radius), the result is recorded as the fixed point angle; Make a radius on the bottom surface pointing to the axis of the auxiliary shaft, which is recorded as the fixed point radius; After the fixed point radius is rotated by a fixed point angle in the opposite direction of the unwinding direction of the supply coil, the position point of the fixed point radius on the bottom surface circumference after rotation is obtained and recorded as the fixed point.

[0010] Optionally, the execution timing duration calculation strategy includes: Get the line segment corresponding to the dividing line on the image on the supply axis, and record it as the separation line; Get the intersection point of the separation line and the bottom surface, and record it as the separation point; Get the arc length between the separation point and the fixed point on the bottom surface; Get the angular velocity of the supply axis; Calculate arc length / (angular velocity*supply radius) and record the result as the timing duration.

[0011] Optionally, the implementation of the same tension maintenance strategy includes: Measure the tension on the plane of the coil where the supply coil is stretched, and record it as the standard tension; Measure the total distance that a unit length of coil is stretched under standard tension, which is recorded as unit stretching distance; measuring the length of the coil reserved for connecting the supply coil by the replacement coil, and recording it as the first length; Calculate the first length * unit stretching distance, and record the result as the second length; Calculate the second length minus the first length, and record the result as the interval distance; One end of the replacement coil for connection is marked as the connection end, and the coil reserved for connection of the replacement coil is naturally dropped so that the connection end is between the auxiliary shaft and the supply shaft, wherein the horizontal distance between the connection end and the replacement shaft is 3 cm; Keep the auxiliary shaft fixed and point the convex pin on the auxiliary shaft toward the supply shaft; When it is determined at the first moment that the supply coil is exhausted and after the first moment has elapsed for a timed period, the auxiliary shaft is pushed to bond the connection end to the remaining material of the supply coil; The replacement coil is fixed without rotation, and the replacement coil is raised vertically upward, and the raised height is the spacing distance.

[0012] Optionally, the executing the equal-proportional calculation strategy includes: When the replacement coil is raised upward by the spacing distance, the replacement coil is rotated so that the unwinding direction of the replacement coil is the same as the unwinding direction of the supply coil; Rotate the auxiliary shaft in a direction opposite to the direction of unwinding of the replacement coil, and the linear speed of the auxiliary shaft is equal to the linear speed of the supply shaft; Calculate the angular velocity of the rotating replacement coil as follows: Obtain the angular velocity of the supply shaft, recorded as the first angular velocity; Obtain the distance from the axis of the replacement coil to the outermost coil, which is recorded as the replacement radius; Calculate supply radius*first angular velocity / replacement radius, and record the result as second angular velocity, which is the angular velocity of the axis rotation of the replacement coil.

[0013] Optionally, the execution of the end connection strategy includes: Calculate the connection length / (supply radius*first angular velocity), and record the result as the connection duration; The moment when the replacement coil and the supply coil begin to connect is recorded as the second moment; After the second moment and at the interval connection time, the coil in the clamping mechanism is connected with the replacement coil in the following manner: Get the interval distance; Lower the replacement shaft vertically downward to a height corresponding to the spacing distance; releasing the coil held by the clamping mechanism; The supply shaft is rotated in the opposite direction of the unwinding direction, and the auxiliary shaft is pushed to connect the released roll and the replacement roll.

[0014] The present invention has the following beneficial effects: 1. The processing technology of the medical chitosan dressing is to add an auxiliary shaft on the side of the supply shaft to assist in connecting the supply coil and the replacement coil, that is, to place the replacement coil between the auxiliary shaft and the supply shaft, and to push the auxiliary shaft to apply pressure to the coil at the connection to increase the strength of the connection. At the same time, the auxiliary shaft is subjected to the friction of the coil and rotates at the same time as the supply shaft, ensuring that every part of the connection meets the standards, enhancing the reliability of the connection, reducing the possibility of disconnection at the connection, and improving production efficiency.

[0015] 2. In the processing technology of medical chitosan dressing, since it has been determined that the supply coil is exhausted and the thickness of the single-layer coil is extremely small, when obtaining the radius of the supply shaft, the thickness of the single-layer coil is not considered to be added to the radius; a radius pointing to the auxiliary axis is made on the bottom surface of the supply shaft to obtain a fixed-point radius, that is, the end point of the fixed-point radius on the bottom circumference, which is recorded as the connection end point. The connection end point is the position point on the bottom surface of the line segment where the replacement coil and the supply coil begin to connect. The fixed-point angle is calculated based on the connection length. After the fixed-point radius is rotated by the fixed-point angle in the opposite direction of the unwinding direction of the supply coil, the intersection of the rotated fixed-point radius and the bottom circumference is obtained to obtain the fixed point, that is, the arc length of the fixed point and the connection end point on the bottom circumference is the connection length. The purpose of calculating the fixed point is to facilitate the subsequent calculation of when to connect the replacement coil and the supply coil, and to convert the connection length to the point position through the arc length of the bottom surface, so as to control the accuracy of the connection and simplify the complexity of the connection.

[0016] 3. In the processing technology of the medical chitosan dressing, when it is judged that the supply coil has been used up, the dividing line at this time must be due to one end of the supply coil being exposed to the outside world. The shaft surface and the coil surface on both sides of one end of the supply coil have different photos taken due to different materials, resulting in an obvious boundary. At this time, it can be determined that there is only one layer of coil on the supply shaft, and the line segment corresponding to the dividing line on the supply shaft is obtained to obtain the separation line, the intersection of the separation line and the bottom surface, and the separation point. The separation point is used as the first-level signal for connecting the coil. At this time, the arc length between the separation point and the fixed point is obtained. According to the angular velocity of the supply shaft, the time required for the rotation arc length is calculated to obtain the timing duration as the second-level signal for connecting the coil. After the first moment, the timing duration is interval, and the connection operation is performed. By converting the connection length into a point on the bottom surface of the supply shaft first, and then converting the arc length of the point on the bottom surface into time, finally, the connection operation is performed through the time judgment signal, simplifying the connection steps, improving efficiency, and judging that the coil is exhausted, the bonding length of the coil can be satisfied while meeting the connection length, and the maximum use efficiency of the supply coil is achieved.

[0017] 4. In the processing technology of the medical chitosan dressing, when the replacement coil and the supply coil are connected, the supply coil is subjected to the tension of the conveyor belt, but the replacement coil is not subjected to any tension. If the replacement coil is kept free of any tension, the thickness of the replacement coil at the connection will be too thick, resulting in obvious connection marks during packaging. At this time, it is necessary to apply tension to the replacement coil, and the tension should be the same as the tension on the supply coil to avoid the supply coil being stretched, but the replacement coil is not stretched, which may cause the coil to bend during connection, resulting in a substandard connection. At the same time, stretching the replacement coil ensures that the stress between the connected coils is the same and the connection is up to standard. At this time, the magnitude of the pulling force is converted into the extended length of the coil, and the total length of the coil change caused by the standard pulling force stretching the unit length of the coil is calculated to obtain the unit stretching distance. Then, the total distance that the replacement coil is stretched when subjected to the same magnitude of pulling force is calculated to obtain the distance that needs to be increased for the replacement coil and the interval distance. The pulling force is converted into distance to simplify the operation steps while keeping the thickness of the connection to a minimum. Since the coils at the connection are connected by the same pulling force, the possibility of disconnection when the coils at the connection are subsequently subjected to the pulling force of the conveyor belt is small, thereby improving production efficiency.

[0018] 5. In the processing technology of the medical chitosan dressing, when no connection signal is received, the connection end of the replacement coil is located between the auxiliary shaft and the supply shaft and 3 cm away from the supply shaft, thereby reducing the possibility of the replacement coil being affected by the misconnection during the unwinding of the supply coil. Only when the connection signal is received will the connection end of the replacement coil be connected to the supply coil, thereby reducing the probability of misoperation during the production process and improving production efficiency.

[0019] 6. In the processing technology of the medical chitosan dressing, after the connection begins, the coil conveyed by the conveyor belt includes both the replacement coil and the supply coil at the connection point. Therefore, the replacement coil and the supply coil must move the same distance at the same time, which is expressed as the linear speed of the supply shaft and the replacement coil being equal on the rotating axis. At this time, since the supply coil has been used up, the radius of the supply shaft is directly obtained, but the coil on the replacement coil cannot be ignored. Therefore, the rotation radius of the replacement coil includes the radius of the shaft and the thickness of the coil, which is used as the replacement radius. According to the equal linear speed, the second angular velocity is calculated as the angular velocity of the shaft rotation of the replacement coil, so as to ensure that the two coils are unwound into the same coil at the same time, ensure the continuity of the production process, and improve production efficiency.

[0020] 7. In the processing technology of the medical chitosan dressing, after the connection is completed, part of the coils in the clamping mechanism are not connected. In order to avoid the waste of raw materials, after the coils in the clamping mechanism are released, the coils are also connected to the replacement coils. At this time, since the released coils are not subjected to tension, while the replacement coils are subjected to tension, in order to ensure the reliability and qualified rate of the connection, the replacement coils will be lowered to eliminate the tension of the unconnected coils on the replacement coils, and avoid the supply coils from being stretched. However, the replacement coils are not stretched, which may cause the coils to be bent during the connection, resulting in a substandard connection. At the same time, the replacement coils are stretched to ensure that the stress between the connected parts of the coils is the same and the connection is up to standard. At the same time, the supply shaft is rotated in the opposite direction of the unwinding direction, so that the supply shaft and the auxiliary shaft squeeze the remaining material of the supply coils at the same time, and then the released coils and the replacement coils are connected to increase the strength of the connection, avoid waste, and improve the reliability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the supply shaft and auxiliary shaft of the present invention.

[0023] Figure 3 It is a schematic diagram of the position of the dividing line of the present invention in the photographed picture.

[0024] Figure 4 It is a schematic diagram of the relationship between the first segmented coil and the second segmented coil of the present invention.

[0025] Figure 5 It is a schematic diagram of the relationship between the third segmented coil and the fourth segmented coil of the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1, refer to Figure 1 , a processing technology of medical chitosan dressing; The raw materials for producing chitosan are cleaned and dried; An acid solution is added to the dried raw material to remove minerals therein, and then an alkaline solution is added to obtain chitosan after treatment; mixing the extracted chitosan with an acetic acid solution to obtain a chitosan solution; The chitosan solution is poured onto a flat surface and heated to cure to obtain a film; adding a cross-linking agent to the film, and drying the film to obtain a chitosan dressing; The chitosan dressing is cut and packaged. During the packaging process: Obtaining a roll material for packaging a medical chitosan dressing, wherein the roll material is divided into a supply roll material and a replacement roll material; A clamping mechanism is added to the shaft of the supply coil, wherein the clamping mechanism includes a groove in which a cylinder is used to clamp one end of the supply coil; Check whether the supplied coil is exhausted; When the supply coil is exhausted, the replacement coil and the supply coil are connected using an adhesive; The specific method is: Set the length of the coil connection, recorded as the connection length; An auxiliary shaft is provided for assisting the replacement of coils and the connection of the supply coils; The moment when the supply coil is detected to be exhausted is recorded as the first moment; Execute the timing duration calculation strategy to obtain the timing duration, wherein the auxiliary shaft is pushed to connect the supply coil and the replacement coil after the timing duration has elapsed after the first moment; Implement the same tension maintenance strategy to keep the tension of the supply coil and the replacement coil the same during the connection process; Obtain the linear speed of the supply coil, execute the proportional calculation strategy, and calculate the linear speed of the replacement coil; The replacement coil is unwound at the calculated line speed. When the replacement coil is connected to the supply coil, the end connection strategy is executed to connect the coil clamped in the clamping mechanism with the replacement coil.

[0028] The method of detecting whether the supplied coil is exhausted comprises: A plane parallel to the horizontal plane is made through the axis of the supply coil and is recorded as the horizontal plane; The horizontal plane divides the supply coil into two parts, the first section coil and the second section coil. Segment roll material; Obtaining a tangent line tangent to a plane formed by the wound supply coil and the unwound supply coil, which is recorded as a transition line, wherein the transition line is located at the second segmented coil; The direction in which the supply coil is stretched is recorded as the stretching direction; Draw a straight line through the midpoint of the axis of the supply coil pointing to the ground, which is recorded as the vertical straight line; The angle between the straight line where the stretching direction is located and the vertical straight line direction is an acute angle; In this embodiment, refer to Figure 4 The relationship between the first segmented coil and the second segmented coil is shown in the figure. As shown, the angle in the figure is an acute angle.

[0029] A plane is made vertically downward through the axis of the supply coil, which is recorded as the vertical plane; The vertical plane divides the supply coil into two parts, and the part containing the transition line is recorded as the third segmented coil. The other part is recorded as the fourth section coil; A straight line parallel to the horizontal plane and perpendicular to the vertical plane is drawn through the midpoint of the axis of the supply coil, which is recorded as the horizontal straight line; photographing the fourth segmented coil on the horizontal straight line at a viewing angle perpendicular to the vertical plane; In this embodiment, Figure 5 As shown, the relationship between the third segmented coil and the fourth segmented coil is shown in the figure, wherein the shooting point is the position point where the fourth segmented coil is shot.

[0030] Get the captured picture and make judgment on it: When the coil on the supply coil is exhausted, a separation line segment is formed between the remaining material of the supply coil and the shaft; The dividing line segment is recorded as the dividing line; Determine whether a dividing line appears on the image; In this embodiment, photos of the supply shaft and the supply coil are used as a training set for training, and then the pictures taken during the actual production process are compared with the pictures in the training set to determine whether a dividing line appears. This technical solution is a prior art.

[0031] If a dividing line appears, it is considered that the coil is exhausted; If no dividing line appears, it is deemed that the coil has not been used up.

[0032] In this embodiment, refer to Figure 3 , the photos of the supply shaft and the supply coil are different, and there is a clear dividing line, which means that the supply coil is exhausted.

[0033] The auxiliary shaft provided for assisting the connection of the replacement coil and the supply coil comprises: Obtaining an axis for supplying coiled material, denoted as supply axis, wherein the shape of the supply axis is a cylinder; Place the supply shaft and the auxiliary shaft in parallel so that the axes of the supply shaft and the auxiliary shaft are in the same horizontal plane; A plurality of rows of protruding nails are arranged on the auxiliary shaft for reinforcing the connection between the supply coil and the replacement coil.

[0034] In this embodiment, refer to Figure 2 , the positional relationship between the auxiliary axis and the supply axis.

[0035] An auxiliary shaft is added to the side of the supply shaft to assist in connecting the supply coil and the replacement coil. The replacement coil is placed between the auxiliary shaft and the supply shaft. The auxiliary shaft is pushed to apply pressure to the coil at the connection to increase the strength of the connection. At the same time, the auxiliary shaft is subjected to the friction of the coil and rotates simultaneously with the supply shaft to ensure that every part of the connection meets the standards, enhance the reliability of the connection, reduce the possibility of disconnection at the connection, and improve production efficiency.

[0036] The execution timing duration calculation strategy includes: Get the connection length; Get any bottom surface of the supply axis; Get the radius of the bottom surface, recorded as the supply radius; Calculate 360°*connection length / (2* * supply radius), the result is recorded as the fixed point angle; Make a radius on the bottom surface pointing to the axis of the auxiliary shaft, which is recorded as the fixed point radius; After the fixed point radius is rotated by a fixed point angle in the opposite direction of the unwinding direction of the supply coil, the position point of the fixed point radius on the bottom surface circumference after rotation is obtained and recorded as the fixed point.

[0037] Since it has been determined that the supply coil is exhausted and the thickness of the single-layer coil is extremely small, the thickness of the single-layer coil is not considered to be added to the radius when obtaining the radius of the supply shaft; a radius pointing to the auxiliary axis is made on the bottom surface of the supply shaft to obtain a fixed-point radius, that is, the endpoint of the fixed-point radius on the bottom circumference, which is recorded as the connection endpoint. The connection endpoint is the position point on the bottom surface of the line segment where the replacement coil and the supply coil begin to connect. The fixed-point angle is calculated based on the connection length. After the fixed-point radius is rotated by the fixed-point angle in the opposite direction of the unwinding direction of the supply coil, the intersection of the rotated fixed-point radius and the bottom circumference is obtained to obtain the fixed point, that is, the arc length of the fixed point and the connection endpoint on the bottom circumference is the connection length. The purpose of calculating the fixed point is to facilitate the subsequent calculation of when to connect the replacement coil and the supply coil, and to convert the connection length to the point position through the arc length of the bottom surface, so as to control the accuracy of the connection and simplify the complexity of the connection.

[0038] The execution timing duration calculation strategy includes: Get the line segment corresponding to the dividing line on the image on the supply axis, and record it as the separation line; Get the intersection point of the separation line and the bottom surface, and record it as the separation point; Get the arc length between the separation point and the fixed point on the bottom surface; Get the angular velocity of the supply axis; Calculate arc length / (angular velocity*supply radius) and record the result as the timing duration.

[0039] When it is determined that the supply coil has been used up, the dividing line at this time must be due to one end of the supply coil being exposed to the outside world. The shaft surface and the coil surface on both sides of one end of the supply coil have obvious boundaries due to different materials and different photos taken. At this time, it can be determined that there is only one layer of coil on the supply shaft, and the line segment corresponding to the dividing line on the supply shaft is obtained to obtain the separation line. The intersection of the separation line and the bottom surface is obtained to obtain the separation point. The separation point is used as the first-level signal for connecting the coils. At this time, the arc length between the separation point and the fixed point is obtained. According to the angular velocity of the supply shaft, the time required for the rotation arc length is calculated to obtain the timing duration as the second-level signal for connecting the coils. After the first moment, the timing duration is interval to perform the connection operation, by first converting the connection length into a point on the bottom surface of the supply shaft, and then converting the arc length of the point on the bottom surface into time. Finally, the connection operation is performed through the time judgment signal, which simplifies the connection steps and improves efficiency.

[0040] The implementation of the same tension maintenance strategy includes: Measure the tension on the plane of the coil where the supply coil is stretched, and record it as the standard tension; Measure the total distance that a unit length of coil is stretched under standard tension, which is recorded as unit stretching distance; measuring the length of the coil reserved for connecting the supply coil by the replacement coil, and recording it as the first length; Calculate the first length * unit stretching distance, and record the result as the second length; Calculate the second length minus the first length, and record the result as the interval distance; When the replacement coil and the supply coil are connected, the supply coil is subjected to the tension of the conveyor belt, but the replacement coil is not subjected to any tension. If the replacement coil is kept free of any tension, the thickness of the replacement coil at the connection will be too thick, resulting in obvious connection marks during packaging. At this time, tension needs to be applied to the replacement coil, and the magnitude of the tension is the same as the magnitude of the tension on the supply coil. At this time, the magnitude of the tension is converted into the length of the coil extension, and the total length of the coil change caused by the standard tension stretching the unit length coil is calculated to obtain the unit stretching distance, and then the total distance the replacement coil is stretched when subjected to the same magnitude of tension is calculated to obtain the distance that the replacement coil needs to increase, to obtain the interval distance, and to convert the tension into distance, thereby simplifying the operation steps and keeping the thickness of the connection at a minimum. Moreover, since the coils at the connection are connected by the same tension, the possibility of disconnection is small when the coils at the connection are subsequently subjected to the tension of the conveyor belt, thereby improving production efficiency.

[0041] One end of the replacement coil for connection is marked as the connection end, and the coil reserved for connection of the replacement coil is naturally dropped so that the connection end is between the auxiliary shaft and the supply shaft, wherein the horizontal distance between the connection end and the replacement shaft is 3 cm; When no connection signal is received, the connection end of the replacement coil is located between the auxiliary shaft and the supply shaft and is 3 cm away from the supply shaft, thereby reducing the possibility of the replacement coil being affected by the misconnection during the unwinding process of the supply coil. Only when the connection signal is received will the connection end of the replacement coil be connected to the supply coil, reducing the probability of misoperation during the production process and improving production efficiency.

[0042] Keep the auxiliary shaft fixed and point the convex pin on the auxiliary shaft toward the supply shaft; When it is determined at the first moment that the supply coil is exhausted and after the first moment has elapsed for a timed period, the auxiliary shaft is pushed to bond the connection end to the remaining material of the supply coil; The replacement coil is fixed without rotation, and the replacement coil is raised vertically upward, and the raised height is the spacing distance.

[0043] The execution of the equal proportion calculation strategy includes: When the replacement coil is raised upward by the spacing distance, the replacement coil is rotated so that the unwinding direction of the replacement coil is the same as the unwinding direction of the supply coil; Rotate the auxiliary shaft in a direction opposite to the direction of unwinding of the replacement coil, and the linear speed of the auxiliary shaft is equal to the linear speed of the supply shaft; Calculate the angular velocity of the rotating replacement coil as follows: Obtain the angular velocity of the supply shaft, recorded as the first angular velocity; Obtain the distance from the axis of the replacement coil to the outermost coil, which is recorded as the replacement radius; Calculate supply radius*first angular velocity / replacement radius, and record the result as second angular velocity, which is the angular velocity of the axis rotation of the replacement coil.

[0044] After the connection begins, the coils transported by the conveyor belt at the connection point include both the replacement coils and the supply coils. Therefore, the replacement coils and the supply coils must move the same distance at the same time, which is expressed as the linear speeds of the supply shaft and the replacement coil being equal on the rotating axis. At this time, since the supply coil has been used up, the radius of the supply shaft is directly obtained, but the coil on the replacement coil cannot be ignored. Therefore, the rotation radius of the replacement coil includes the radius of the shaft and the thickness of the coil, which is used as the replacement radius. Based on the equal linear speeds, the second angular velocity is calculated as the angular velocity of the shaft rotation of the replacement coil, thereby ensuring that the two coils are unwound into the same coil at the same time, ensuring the continuity of the production process, and improving production efficiency.

[0045] The execution of the terminal connection strategy includes: Calculate the connection length / (supply radius*first angular velocity), and record the result as the connection duration; The moment when the replacement coil and the supply coil begin to connect is recorded as the second moment; After the second moment and at the interval connection time, the coil in the clamping mechanism is connected with the replacement coil in the following manner: Get the interval distance; Lower the replacement shaft vertically downward to a height corresponding to the spacing distance; releasing the coil held by the clamping mechanism; The supply shaft is rotated in the opposite direction of the unwinding direction, and the auxiliary shaft is pushed to connect the released roll and the replacement roll.

[0046] After the connection is completed, some coils in the clamping mechanism are not connected. In order to avoid waste of raw materials, after the coils in the clamping mechanism are released, the coils are also connected to the replacement coils. At this time, since the released coils are not subjected to tension, while the replacement coils are subjected to tension, in order to ensure the reliability and pass rate of the connection, the replacement coils will be lowered to eliminate the tension of the unconnected coils on the replacement coils. At the same time, the supply shaft is rotated in the opposite direction of the unwinding direction, so that the supply shaft and the auxiliary shaft squeeze the remaining material of the supply coil at the same time, and then the released coils and the replacement coils are connected to increase the strength of the connection, avoid waste, and improve the reliability of the connection.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A processing technology for medical chitosan dressing, characterized in that: include: Obtaining a roll material for packaging a medical chitosan dressing, wherein the roll material is divided into a supply roll material and a replacement roll material; A clamping mechanism is added to the shaft of the supply coil, wherein the clamping mechanism includes a groove in which a cylinder is used to clamp one end of the supply coil; Check whether the supplied coil is exhausted; When the supply coil is exhausted, the replacement coil and the supply coil are connected using an adhesive; The specific method is: Set the length of the coil connection, recorded as the connection length; An auxiliary shaft is provided for assisting the replacement of coils and the connection of the supply coils; The moment when the supply coil is detected to be exhausted is recorded as the first moment; Execute the timing duration calculation strategy to obtain the timing duration, wherein the auxiliary shaft is pushed to connect the supply coil and the replacement coil after the timing duration has elapsed after the first moment; Implement the same tension maintenance strategy to keep the tension of the supply coil and the replacement coil the same during the connection process; Obtain the linear speed of the supply coil, execute the proportional calculation strategy, and calculate the linear speed of the replacement coil; The replacement coil is unwound at the calculated line speed. When the replacement coil is connected to the supply coil, the end connection strategy is executed to connect the coil clamped in the clamping mechanism with the replacement coil.

2. The processing technology of medical chitosan dressing according to claim 1, characterized in that: The method of detecting whether the supplied coil is exhausted comprises: A plane parallel to the horizontal plane is made through the axis of the supply coil and is recorded as the horizontal plane; The horizontal plane divides the supply coil into two parts, the first section coil and the second section coil. Segment roll material; Obtaining a tangent line between a plane formed by a wound supply coil and an unwound supply coil, and recording it as a transition line, wherein the transition line is located at the second segmented coil; The direction in which the supply coil is stretched is recorded as the stretching direction; Draw a straight line through the midpoint of the axis of the supply coil pointing to the ground, which is recorded as the vertical straight line; The angle between the straight line where the stretching direction is located and the vertical straight line direction is an acute angle; A plane is made vertically downward through the axis of the supply coil, which is recorded as the vertical plane; The vertical plane divides the supply coil into two parts, and the part containing the transition line is recorded as the third segmented coil. The other part is recorded as the fourth section coil; A straight line parallel to the horizontal plane and perpendicular to the vertical plane is drawn through the midpoint of the axis of the supply coil, which is recorded as the horizontal straight line; photographing the fourth segmented coil on the horizontal straight line at a viewing angle perpendicular to the vertical plane; Get the captured picture and make judgment on it: When the coil on the supply coil is exhausted, a separation line segment is formed between the remaining material of the supply coil and the shaft; The dividing line segment is recorded as the dividing line; Determine whether a dividing line appears on the image; If a dividing line appears, it is considered that the coil is exhausted; If no dividing line appears, it is deemed that the coil has not been used up.

3. The processing technology of medical chitosan dressing according to claim 2, characterized in that: The auxiliary shaft provided for assisting the connection of the replacement coil and the supply coil comprises: Obtaining an axis for supplying coiled material, denoted as supply axis, wherein the shape of the supply axis is a cylinder; Place the supply shaft and the auxiliary shaft in parallel so that the axes of the supply shaft and the auxiliary shaft are in the same horizontal plane; A plurality of rows of protruding nails are arranged on the auxiliary shaft for reinforcing the connection between the supply coil and the replacement coil.

4. The processing technology of medical chitosan dressing according to claim 3, characterized in that: The execution timing duration calculation strategy includes: Get the connection length; Get any bottom surface of the supply axis; Get the radius of the bottom surface, recorded as the supply radius; Calculate 360°*connection length / (2* * supply radius), the result is recorded as the fixed point angle; Make a radius on the bottom surface pointing to the axis of the auxiliary shaft, which is recorded as the fixed point radius; After the fixed point radius is rotated by a fixed point angle in the opposite direction of the unwinding direction of the supply coil, the position point of the fixed point radius on the bottom surface circumference after rotation is obtained and recorded as the fixed point.

5. The processing technology of medical chitosan dressing according to claim 4, characterized in that: The execution timing duration calculation strategy includes: Get the line segment corresponding to the dividing line on the image on the supply axis, and record it as the separation line; Get the intersection point of the separation line and the bottom surface, and record it as the separation point; Get the arc length between the separation point and the fixed point on the bottom surface; Get the angular velocity of the supply axis; Calculate arc length / (angular velocity*supply radius) and record the result as the timing duration.

6. The processing technology of medical chitosan dressing according to claim 1, characterized in that: The implementation of the same tension maintenance strategy includes: Measure the tension on the plane of the coil where the supply coil is stretched, and record it as the standard tension; Measure the total distance that a unit length of coil is stretched under standard tension, which is recorded as unit stretching distance; measuring the length of the coil reserved for connecting the supply coil by the replacement coil, and recording it as the first length; Calculate the first length * unit stretching distance, and record the result as the second length; Calculate the second length minus the first length, and record the result as the interval distance; One end of the replacement coil for connection is marked as the connection end, and the coil reserved for connection of the replacement coil is naturally dropped so that the connection end is between the auxiliary shaft and the supply shaft, wherein the horizontal distance between the connection end and the replacement shaft is 3 cm; Keep the auxiliary shaft fixed and point the convex pin on the auxiliary shaft toward the supply shaft; When it is determined at the first moment that the supply coil is exhausted and after the first moment has elapsed for a timed period, the auxiliary shaft is pushed to bond the connection end to the remaining material of the supply coil; The replacement coil is fixed without rotation, and the replacement coil is raised vertically upward, and the raised height is the spacing distance.

7. The processing technology of medical chitosan dressing according to claim 6, characterized in that: The execution of the equal proportion calculation strategy includes: When the replacement coil is raised upward by the spacing distance, the replacement coil is rotated so that the unwinding direction of the replacement coil is the same as the unwinding direction of the supply coil; Rotate the auxiliary shaft in a direction opposite to the direction of unwinding of the replacement coil, and the linear speed of the auxiliary shaft is equal to the linear speed of the supply shaft; Calculate the angular velocity of the rotating replacement coil as follows: Obtain the angular velocity of the supply shaft, recorded as the first angular velocity; Obtain the distance from the axis of the replacement coil to the outermost coil, which is recorded as the replacement radius; Calculate supply radius*first angular velocity / replacement radius, and record the result as second angular velocity, which is the angular velocity of the axis rotation of the replacement coil.

8. The processing technology of medical chitosan dressing according to claim 7, characterized in that: The execution of the end connection strategy includes: Calculate the connection length / (supply radius*first angular velocity), and record the result as the connection duration; The moment when the replacement coil and the supply coil begin to connect is recorded as the second moment; After the second moment and at the interval connection time, the coil in the clamping mechanism is connected with the replacement coil in the following manner: Get the interval distance; Lower the replacement shaft vertically downward to a height corresponding to the spacing distance; releasing the coil held by the clamping mechanism; The supply shaft is rotated in the opposite direction of the unwinding direction, and the auxiliary shaft is pushed to connect the released roll and the replacement roll.

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