Roller die-cutting roller for cutting medicated dressing bags

Abstract

This utility model provides a rolling die-cutting roller for cutting medicine-filled dressing bags, belonging to the technical field of rolling die-cutting equipment. It solves the problem of increased scrap rate due to thermal deformation of existing rolling die-cutting rollers. This rolling die-cutting roller for cutting medicine-filled dressing bags includes a cutting roller, which comprises a roller shaft and a cylinder mounted on the roller shaft. Several ventilation channels are provided on the end face of the cylinder, extending axially through the cylinder. These ventilation channels are arranged sequentially along the circumference. Several grooves are provided on the outer circumferential surface of the cylinder, and an annular cutting edge is provided along the groove edge on the outer circumferential surface of the cylinder. Each groove has a ventilation hole on its bottom surface, which communicates with at least one ventilation channel. This rolling die-cutting roller can reduce the scrap rate.

Description

Technical Field

[0001] This utility model belongs to the technical field of roll die-cutting equipment, and relates to a roll die-cutting roller for cutting medicine core dressing bags. Background Technology

[0002] Medicine-filled dressing bags, also known as medicine-filled pouches, are bags into which medicine-filled dressings are placed and sealed. In industrial production, the composite medicine-filled dressing is usually placed between two pouches, and then the two pouches are heat-sealed around the medicine-filled dressing. Finally, the dressing is cut to form individual medicine-filled dressing bags.

[0003] In this process, the sealing of the medicated dressing bag uses a perimeter sealing roller, and the cutting of the medicated dressing bag typically uses a roller die-cutting roller. The bag pieces are sequentially sealed and die-cut by the perimeter sealing roller and the roller die-cutting roller. The roller die-cutting roller includes an upper cutting roller and a lower bottom roller. For example, a cotton material cutting device for a medical dressing forming machine disclosed in Chinese patent document (publication number CN218226822U) places the cotton material between the upper cutting roller and the lower bottom roller. The rotation of the upper cutting roller and the bottom roller cuts the cotton material. During the movement of the cotton material between the upper cutting roller and the lower bottom roller, frictional heat is generated by friction with the upper cutting roller and the bottom roller, causing the temperature of the upper cutting roller and the bottom bottom roller to rise and deform. When deformation occurs, it affects the distance between the upper cutting roller and the bottom roller, that is, the cutting gap changes. As a result, when the roller die-cutting roller works for a long time, the medicated dressing bags may stick together and cannot be cut, or even burrs may appear, leading to an increased scrap rate. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a rolling die-cutting roller for cutting medicine core dressing bags, thereby solving the technical problem of how to reduce the scrap rate.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A die-cutting roller for cutting medicated dressing bags includes a cutting roller, which includes a roller shaft and a cylinder mounted on the roller shaft. The cylinder is characterized by having several axially penetrating ventilation channels on its end face, arranged sequentially circumferentially. The outer circumferential surface of the cylinder has several grooves, and the outer circumferential surface of the cylinder has an annular cutting edge arranged along the groove edge. Each groove has a ventilation hole on its bottom surface, and the ventilation hole communicates with at least one ventilation channel.

[0007] During operation, the roller rotates, and the cutting edge cuts the material. Cool air is introduced into the roller through the ventilation channel to lower its temperature. Because the ventilation channel, ventilation holes, and grooves are sequentially connected, not only the inside of the roller is cooled, but also its outer surface. Furthermore, the cutting edge is positioned along the groove edge; at the cutting position, the material's obstruction allows the cool air diffusing from the groove to directly cool the cutting edge, thus preventing thermal deformation of the roller and ensuring normal cutting, reducing waste caused by thermal deformation. Therefore, this roller die-cutting roll can reduce the scrap rate.

[0008] In the aforementioned die-cutting roller for cutting medicated dressing bags, several ventilation holes are provided on the bottom surface of each groove. This increases the amount of cold air diffusing to the outer circumference of the roller, thereby ensuring cooling of the outer circumference of the roller and the cutting edge, which helps to reduce waste caused by thermal deformation and lower the scrap rate.

[0009] In the die-cutting roller for cutting the aforementioned medicated dressing bags, the diameter of the ventilation channel is larger than the diameter of the ventilation hole. This allows for better ventilation of the grooves, which helps to lower the temperature and reduce the scrap rate.

[0010] In the above-mentioned rolling die-cutting roller for cutting medicated dressing bags, the roller is separately mounted on the roller shaft, the outer circumferential surface of the roller shaft is provided with a shoulder, and a threaded sleeve is also threaded onto the roller shaft. The roller is axially fixed between the shoulder and the threaded sleeve.

[0011] When the blade needs sharpening or replacement, simply remove the roller from the roller shaft and replace it. To remove it, unscrew the nut, then remove the roller. To install it, fit the new roller onto the roller shaft and then tighten the nut again.

[0012] In the above-mentioned rolling die-cutting roller for cutting medicated dressing bags, the roller includes a main cylinder and several sub-cylinders. The sub-cylinders are detachably fixed to the outer circumferential surface of the main cylinder. The ventilation channel is provided on the main cylinder. The groove and the blade are provided on the sub-cylinders, and each sub-cylinder is provided with a groove and a blade.

[0013] This allows the blade to be disassembled for sharpening or replacement, ensuring the cutting performance of the blade and reducing the scrap rate.

[0014] In the above-mentioned rolling die-cutting roller for cutting medicated dressing bags, the surface of the dividing strip facing the main cylinder is a plane, and an adjustment plate is provided between the dividing strip and the main cylinder.

[0015] Aluminum foil can be used to adjust the cutting edge. Prepare aluminum foil of different thicknesses and select the appropriate thickness based on the error. Generally, a thicker foil is chosen when the error is large. Installing the aluminum foil between the dividing tube and the main tube allows adjustment of the distance between the blade and the bottom roller, ensuring cutting quality and reducing scrap rate. Additionally, when the blade roller is installed on the die-cutting machine, its ends are prone to bending and deformation under pressure. The aluminum foil helps to improve the problem of incomplete cutting caused by bending deformation, especially at the blade's radius (R-angle).

[0016] In the above-mentioned roller die-cutting roller for cutting medicated dressing bags, the roller die-cutting roller for cutting medicated dressing bags also includes a bottom roller. The outer circumferential surface of the bottom roller has a plurality of clearance grooves, and the clearance grooves are arranged in a one-to-one correspondence with the grooves.

[0017] The material to be cut is located between the cutter roller and the bottom roller. The clearance groove can reduce the contact area between the bottom roller and the material to be cut, thereby reducing the frictional heat generated by the bottom roller and helping to reduce the scrap rate.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] Ventilation channels, holes, and grooves are incorporated into the cutter roller to cool both its internal and external surfaces, preventing thermal deformation that could affect normal cutting and reducing scrap. The modular design of the split-spindle cutter facilitates tool replacement and maintenance. Adjustment slats between the split-spindle cutter and the main cylinder significantly improve the problem of incomplete cuts and burrs at the blade's radius (R-angle), further reducing the scrap rate. Attached Figure Description

[0020] Figure 1 This is a front view of the die-cutting roller in Example 1 of the rolling die-cutting roller for cutting the drug core dressing bag.

[0021] Figure 2 yes Figure 1 A cross-sectional view along the AA direction.

[0022] Figure 3 This is a front view of the bottom roller in Example 1 of the rolling die-cutting roller for cutting the drug core dressing bag.

[0023] Figure 4 yes Figure 3 Cross-sectional view along the BB direction.

[0024] Figure 5 This is a cross-sectional view of the die-cutting roller in Example 2 of the rolling die-cutting roller for cutting the drug core dressing bag.

[0025] Figure 6 This is a cross-sectional view of the bottom roller in Example 2 of the rolling die-cutting roller for cutting the drug core dressing bag.

[0026] In the diagram, 1 is the cutter roller; 1a is the roller shaft; 1a1 is the shoulder; 1b is the roller; 1b1 is the ventilation channel; 1b2 is the groove; 1b3 is the blade; 1b4 is the ventilation hole; 1b5 is the main cylinder; 1b6 is the dividing plate; 1c is the screw sleeve; 1d is the adjusting plate; 2 is the bottom roller; 2a is the clearance groove; 2b is the main roller body; 2c is the dividing plate. Detailed Implementation

[0027] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0028] Example 1

[0029] like Figure 1 and Figure 2 As shown, a die-cutting roller for cutting medicated dressing bags includes a cutting roller 1, which comprises a roller shaft 1a and a roller 1b mounted on the roller shaft 1a. The roller 1b is separately mounted on the roller shaft 1a, and the rollers 1b are connected by a key. The roller shaft 1a has a shoulder 1a1 and a threaded sleeve 1c. The roller 1b is axially fixed between the shoulder 1a1 and the threaded sleeve 1c, meaning that both ends of the roller 1b abut against the shoulder 1a1 and the threaded sleeve 1c, respectively. Alternatively, the roller 1b and roller shaft 1a can be integrally formed. Several ventilation channels 1b1 are provided on the end face of the roller 1b, extending axially through the roller 1b and arranged sequentially circumferentially. Several grooves 1b2 are provided on the outer circumferential surface of the roller 1b. The grooves 1b2 are approximately rectangular, and their corners are rounded. The grooves 1b2 are arranged in a matrix on the unfolded surface of the outer circumference of the roller 1b. The arrangement of the grooves 1b2 can be 4×4, 4×6, or 6×6, etc. In the figure, four grooves 1b2 are evenly arranged in the circumferential direction of the roller 1b, and four grooves 1b2 are evenly arranged in the axial direction of the roller 1b. The outer circumferential surface of the roller 1b has annular blades 1b3 arranged along the groove edges of the grooves 1b2. Each groove 1b2 has a vent hole 1b4 on its bottom surface, which communicates with at least one venting channel 1b1. Generally, the vent hole 1b4 communicates with the nearest venting channel 1b1. Several vent holes 1b4 are provided on the bottom surface of each groove 1b2. In the figure, each groove 1b2 has six vent holes 1b4, which are arranged in a matrix. The diameter of the venting channel 1b1 is larger than the diameter of the vent hole 1b4. Figure 3 and Figure 4 As shown, the rolling die-cutting roller for cutting the medicated dressing bag also includes a bottom roller 2. The outer circumferential surface of the bottom roller 2 has several clearance grooves 2a, and the clearance grooves 2a are arranged in a one-to-one correspondence with the grooves 1b2.

[0030] The cutting roller and bottom roller 2 are mounted on the frame, one above the other. A shaft disc is mounted on each end of the roller 1b on the frame, suspended outside the roller shaft 1a. An annular ventilation groove is provided on the end face of the shaft disc facing the roller 1b, communicating with all ventilation channels 1b1. The shaft disc also has air holes connecting the ventilation grooves and air pipes, which are connected to an air source. Two sealing rings are provided between each shaft disc and the roller 1b, fixed to the shaft disc and located on the outer and inner circumferences of the ventilation grooves, respectively. During operation, the material to be cut is located between the cutting roller and the bottom roller 2. The roller 1b rotates, and the cutting edge 1b3 cuts the material. During operation, cold air flows through the air pipes, air holes, and ventilation grooves into the ventilation channels 1b1, allowing cold air to be introduced into the roller 1b to cool it. Since the ventilation channel 1b1, ventilation hole 1b4, and groove 1b2 are sequentially connected, not only the interior of the roller 1b can be cooled, but also the outer circumference of the roller 1b can be cooled. Furthermore, the cutting edge 1b3 is positioned along the groove edge of the groove 1b2. At the cutting position, due to the obstruction of the material to be cut, the cold air diffusing from the groove 1b2 can directly cool the cutting edge 1b3, thereby preventing thermal deformation of the roller 1b from affecting normal cutting and reducing scrap caused by thermal deformation. Therefore, this roller die-cutting roller can reduce the scrap rate.

[0031] Example 2

[0032] like Figure 5 As shown, the cutter roller 1 has a split roller 1b, including a main cylinder 1b5 and several branch cylinder plates 1b6. The branch cylinder plates 1b6 are detachably and fixedly connected to the outer circumferential surface of the main cylinder 1b5, and are bolted to the main cylinder 1b5. A ventilation channel 1b1 is provided on the main cylinder 1b5, and grooves 1b2 and blades 1b3 are provided on the branch cylinder plates 1b6, with one groove 1b2 and one blade 1b3 on each branch cylinder plate 1b6. The ventilation holes 1b4 on the branch cylinder plates 1b6 have internal threads and can serve as extraction holes. When disassembling or assembling the branch cylinder plates 1b6, a lifting ring is threaded onto the ventilation hole 1b4, forming a point of force, thus facilitating the disassembly or assembly of the branch cylinder plates 1b6. In the figure, six branch cylinder plates 1b6 are arranged circumferentially on the main cylinder 1b5. The cross-section of the dividing blade 1b6 is a trapezoid with a rounded top and a flat bottom. The surface of the dividing blade 1b6 facing the main cylinder 1b5 is flat. An adjusting slab 1d is provided between the dividing blade 1b6 and the main cylinder 1b5. The adjusting slab 1d is generally an aluminum foil sheet. The adjusting slab 1d can be provided on the entire bottom surface of the dividing blade 1b6, or only on the bottom surface corresponding to the R-angle of the cutting edge 1b3 of the dividing blade 1b6. This can significantly improve the problem of incomplete cutting and burrs at the R-angle of the cutting edge 1b3, reducing the scrap rate. Figure 6As shown, correspondingly, the bottom roller 2 is also configured as a split type, comprising a main roller body 2b and several segments 2c. The segments 2c are detachably and fixedly connected to the outer circumferential surface of the main roller body 2b, and are fixedly connected to the main roller body 2b by bolts. A clearance groove 2a is provided on the segments 2c, and one clearance groove 2a is provided for each segment 2c. Other structures are basically the same as in Embodiment 1.

[0033] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A die-cutting roller for cutting medicated dressing bags, comprising a cutting roller (1), said cutting roller (1) comprising a roller shaft (1a) and a roller (1b) disposed on the roller shaft (1a), characterized in that, The roller (1b) has an axially penetrating ventilation channel (1b1) on its end face. There are several ventilation channels (1b1) arranged in sequence along the circumference. The outer circumferential surface of the roller (1b) has several grooves (1b2). The outer circumferential surface of the roller (1b) has an annular blade (1b3) arranged along the groove edge of the groove (1b2). Each groove (1b2) has a ventilation hole (1b4) on its bottom surface. The ventilation hole (1b4) is connected to at least one ventilation channel (1b1).

2. The die-cutting roller for cutting medicated dressing bags according to claim 1, characterized in that, Several ventilation holes (1b4) are provided on the bottom surface of each groove (1b2).

3. The die-cutting roller for cutting medicated dressing bags according to claim 1, characterized in that, The diameter of the ventilation channel (1b1) is larger than the diameter of the ventilation hole (1b4).

4. The die-cutting roller for cutting medicated dressing bags according to any one of claims 1-3, characterized in that, The roller (1b) is separately mounted on the roller shaft (1a). The outer circumferential surface of the roller shaft (1a) is provided with a shoulder (1a1). A threaded sleeve (1c) is also threaded onto the roller shaft (1a). The roller (1b) is axially fixed between the shoulder (1a1) and the threaded sleeve (1c).

5. The die-cutting roller for cutting medicated dressing bags according to any one of claims 1-3, characterized in that, The roller (1b) includes a main cylinder (1b5) and several sub-cylinders (1b6). The sub-cylinders (1b6) are detachably fixed to the outer circumferential surface of the main cylinder (1b5). The ventilation channel (1b1) is provided on the main cylinder (1b5). The groove (1b2) and the blade (1b3) are provided on the sub-cylinders (1b6), and each sub-cylinder (1b6) is provided with a groove (1b2) and a blade (1b3).

6. The die-cutting roller for cutting medicated dressing bags according to claim 5, characterized in that, The surface of the sub-tube (1b6) facing the main tube (1b5) is a plane, and an adjustment plate (1d) is provided between the sub-tube (1b6) and the main tube (1b5).

7. The die-cutting roller for cutting medicated dressing bags according to any one of claims 1-3, characterized in that, The rolling die-cutting roller for cutting the medicated dressing bag also includes a bottom roller (2), and the outer circumferential surface of the bottom roller (2) has several clearance grooves (2a), and the clearance grooves (2a) and the grooves (1b2) are arranged in a one-to-one correspondence.

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