Inserting Knife Roller Structure and Method for Avoiding Damage to Barium Wire at High Speed

Abstract

A cutter inserting roller structure and method for avoiding damage to barium wires in a high-speed state, which includes a roller shaft, bearings, cutter inserts and a bottom cutter roller. The bearings are arranged at both ends of the roller shaft for cooperation. The cutter inserts are connected to the roller shaft and the cutting edges are located on one side of the roller shaft. The roller shaft and the bearings are located in the cutter insert grooves of the bottom cutter roller. The cutting edges of the cutter inserts extend out of the cutter insert grooves, and the cutter inserts swing slightly at the rectangular notch of the cutter insert grooves. The cutting edges are chamfered on both sides and have an arc transition. A barium wire avoidance groove is also provided on the cutting edges to prevent the cutter inserts from scraping the gauze and barium wires before slitting, and to prevent the cutter inserts from scraping the gauze pieces and barium wires after slitting, effectively avoiding the generation of fuzz on the surfaces of the gauze and gauze pieces and avoiding the breakage of barium wires.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical supplies production equipment, and relates to a cutter roller structure and method for avoiding damaging barium wires in a high-speed state. Background Art

[0002] In medical supplies, there is a barium wire gauze used during surgery. In its preparation process, a folding machine is used to fold the gauze multiple times. Before folding, the barium wire is transferred onto the gauze and attached to it. The transfer of the gauze is through a transfer roller, and the barium wire is pulled onto the gauze and attached to it as a whole. After the gauze is cut into gauze pieces, it is then folded. The main problems existing in the current folding machine during the processes of traction, cutting, transfer, and insertion into the drum are that during the processes of cutting, transfer, and insertion into the drum, the cutter is in a fixed state, scraping against the gauze and gauze pieces, resulting in fluff on their surfaces; at the same time, it also scrapes against the barium wire, causing the barium wire to break. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a cutter roller structure and method for avoiding damaging barium wires in a high-speed state. Bearings are arranged at both ends of the roller shaft to cooperate with it. The cutter is connected to the roller shaft, and the cutting edge is located on one side of the roller shaft. The roller shaft, bearings, and the cutter are located in the cutter groove of the bottom cutter roller. The cutting edge of the cutter extends out of the cutter groove, and the cutter swings slightly at the rectangular notch of the cutter groove. The cutting edge has two-sided inclined surfaces and is arc-transitioned. A barium wire avoidance groove is also provided on the cutting edge, preventing the cutter from scraping against the gauze and barium wire before cutting, and preventing the cutter from scraping against the gauze pieces and barium wire after cutting, effectively avoiding fluff on the surfaces of the gauze and gauze pieces and avoiding breakage of the barium wire at the same time.

[0004] To solve the above technical problem, the technical solution adopted by the present invention is: a cutter roller structure for avoiding damaging barium wires in a high-speed state, which includes a roller shaft, bearings, a cutter, and a bottom cutter roller; the bearings cooperate with the shaft heads at both ends of the roller shaft, the adjustment holes on one side of the cutter correspond to the connection holes on the roller shaft, the cutting edge of the cutter extends out of one side of the roller shaft, and the roller shaft and bearings are located in the cutter groove of the bottom cutter roller; a barium wire avoidance groove is provided on the cutting edge of the cutter, and the cutter swings slightly in the cutter groove.

[0005] The roller shaft is a semi-circular shaft body, the shaft heads are connected to both ends of the semi-circular shaft body, and a plurality of connection holes are axially arranged on the horizontal plane of the semi-circular shaft body.

[0006] The cutter is a horizontal flat plate, with adjustment holes provided on one side, the side corresponding to the adjustment holes is the cutting edge, and the adjustment holes are U-shaped groove holes.

[0007] The cutting edge has a two-sided inclined surface structure, and the front cutting tip is arc-transitioned with the side inclined surface.

[0008] A recessed barium wire avoidance groove is provided on the cutting edge, and the structure of the barium wire avoidance groove is the same as that of the cutting edge.

[0009] A negative pressure cavity is axially provided in the center of the roller body of the bottom knife roller. The negative pressure holes provided on the surface of the roller body are communicated with the negative pressure cavity, and the hollow shafts at both ends of the roller body are communicated with the negative pressure cavity.

[0010] Two symmetrically arranged knife insertion grooves are axially provided on the surface of the roller body along the center line. The knife insertion groove includes a rectangular notch connected by a circular hole. The bearing is located in the circular hole and cooperates with it, and the knife projects out of the rectangular notch.

[0011] A counter knife is installed in two symmetrically arranged counter knife grooves axially provided on the surface of the roller body along the center line, and a negative pressure window is provided on one side close to the counter knife.

[0012] The negative pressure holes and negative pressure grooves in the negative pressure window are communicated with the negative pressure cavity, and the diamond wire mesh cooperates with the negative pressure window for sealing; the pore diameter of the mesh holes of the diamond wire mesh is much smaller than the pore diameter of the negative pressure holes, and the hole area of the negative pressure holes is much smaller than the cross-sectional area of the notch of the negative pressure groove.

[0013] The method for avoiding damaging the barium wire under high-speed conditions as described above includes the following steps:

[0014] S1. Clamping: After the gauze roll releases the gauze, it is drawn into the space between the bottom knife roller and the cutting knife roller together with the barium wire and is clamped by the bottom knife roller and the cutting knife roller; in this step, the barium wire adheres to the gauze and forms an integral body with it.

[0015] S2. Traction: The bottom knife roller and the cutting knife roller rotate in opposite directions to pull the gauze to move, and the gauze is pulled across the clamping point of the bottom knife roller and the cutting knife roller.

[0016] S3. Adsorption: The gauze passing over the clamping point is first adsorbed by the negative pressure window, and then is adsorbed by the negative pressure holes on the surface of the bottom knife roller after being propped up by the knife; in this step, the gauze is closely attached to the diamond wire mesh and the surface of the roller body.

[0017] S4. Slitting: The gauze passing over the clamping point is cut by the cooperation of the counter knife of the bottom knife roller and the cutting knife of the cutting knife roller, and the gauze passing over the clamping point becomes a gauze piece after being cut.

[0018] S5. Transfer: The bottom knife roller rotates at high speed to drive the knife to insert the gauze piece into the gap of the drum, and the drum transfers the gauze piece.

[0019] S6. Anti-scratching before slitting: In S2, the bottom knife roller rotates at high speed to drive the knife to move synchronously with it. Before the knife approaches the bottom knife roller and the cutting knife roller, the knife gradually contacts the gauze and pushes the gauze into the knife avoidance hole of the cutting knife roller, so that the knife can cross the cutting point of the bottom knife roller and the cutting knife roller; during this process, the cutting edge of the knife forms a surface contact with the gauze and swings slightly, and the barium wire on the gauze is located in the barium wire avoidance groove.

[0020] S7. Scratch prevention after slitting. In S5, during the process of the inserting knife inserting the gauze sheet into the gap of the rotary drum, both ends of the gauze sheet are pulled. During this process, the cutting edge of the inserting knife makes surface contact with the gauze and swings slightly, and the barium line on the gauze is located in the barium line avoidance groove.

[0021] The main beneficial effects of the present invention are as follows:

[0022] The bearings fitted at both ends of the roller shaft are located in the inserting knife groove of the bottom knife roller and cooperate with it, enabling the inserting knife to drive the roller shaft to rotate flexibly around the bearings during the swinging process.

[0023] When the inserting knife swings, the cutting edge at the front end makes surface contact with the gauze or the gauze surface, and the rectangular notch of the inserting knife groove limits the swinging amplitude of the inserting knife.

[0024] When the gauze or the gauze sheet contacts the inserting knife, the barium line on it is located in the barium line avoidance groove on the cutting edge and does not contact the cutting edge.

[0025] The gauze that crosses the clamping point is first adsorbed by the negative pressure window, then propped up by the inserting knife and adsorbed by the negative pressure holes on the surface of the bottom knife roller, so that one end of the gauze is closely attached to the surface of the diamond gauze. The gauze on the other side of the inserting knife is adsorbed on the surface of the roller body, making the adsorption forces at both ends of the formed gauze sheet after cutting different.

[0026] The adjustment hole on one side of the inserting knife cooperates with the connection hole on the roller shaft, and is locked by a fastener. Pushing and pulling the inserting knife facilitates adjusting the extension amount of the inserting knife extending out of the inserting knife groove, thereby adjusting the depth of insertion into the gap of the rotary drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the drawings and embodiments:

[0028] Figure 1 It is a schematic structural diagram of the present invention.

[0029] Figure 2 It is Figure 1 a side view schematic diagram of

[0030] Figure 3 It is a schematic structural diagram of the roller shaft of the present invention.

[0031] Figure 4 It is Figure 1 an enlarged schematic diagram at A of

[0032] Figure 5 It is Figure 1 an enlarged schematic diagram at B of

[0033] Figure 6 It is a schematic structural diagram of the cooperation between the bottom knife roller and the cutting knife roller of the present invention.

[0034] Figure 7It is a cross-sectional schematic diagram of the bottom knife roller of the present invention.

[0035] In the figure: roller shaft 1, shaft head 11, connecting hole 12, bearing 2, inserting knife 3, adjusting hole 31, cutting edge 32, barium wire avoidance groove 33, bottom knife roller 4, roller body 41, negative pressure cavity 42, negative pressure hole 43, inserting knife groove 44, resisting knife 45, negative pressure window 46, negative pressure groove 47, diamond mesh 48. DETAILED DESCRIPTION

[0036] like Figures 1 to 7 In the invention, a knife roller structure is provided to avoid damaging the barium wire at high speed, which comprises a roller shaft 1, a bearing 2, a knife 3 and a bottom knife roller 4; the bearing 2 cooperates with the shaft heads 11 at both ends of the roller shaft 1, the adjustment hole 31 on one side of the knife 3 corresponds to the connection hole 12 on the roller shaft 1, the cutting edge 32 of the knife 3 extends out of one side outside the roller shaft 1, the roller shaft 1 and the bearing 2 are located in the knife slot 44 of the bottom knife roller 4; the cutting edge 32 of the knife 3 is provided with a barium wire avoidance slot 33, and the knife 3 swings slightly in the knife slot 44. When in use, the knife 3 is prevented from scratching the gauze and the barium wire before slitting, and the knife 3 is prevented from scratching the gauze sheet and the barium wire after slitting, effectively avoiding the generation of wool on the surface of the gauze and the gauze sheet while preventing the barium wire from breaking.

[0037] In a preferred embodiment, the roller shaft 1 is a semicircular shaft body, the shaft head 11 is connected to both ends of the semicircular shaft body, and a plurality of connecting holes 12 are axially arranged on the horizontal plane of the semicircular shaft body. When in use, the roller shaft 1 is a semicircular structure, and its horizontal plane contacts the inserting blade 3, with a large contact area and good stability after being fixed, and the horizontal plane plays a horizontal guiding role in the process of adjusting the extension amount of the inserting blade 3.

[0038] In a preferred embodiment, the inserting knife 3 is a horizontal flat plate, with an adjustment hole 31 arranged on one side, a cutting edge 32 on the side corresponding to the adjustment hole 31, and the adjustment hole 31 is a U-shaped slot. When in use, the inserting knife 3 inserts the gauze piece into the gap of the rotating drum during the process of cooperating with the rotating drum; when installing, the fastener passes through the adjustment hole 31 and connects and locks the inserting knife 3 with the connecting hole 12 of the roller shaft 1.

[0039] In a preferred embodiment, the cutting edge 32 is a structure of inverted slopes on both sides, and the front blade tip has an arc transition with the side inverted slopes. When in use, the cutting edge 32 with inverted slopes on both sides and arc transition forms surface contact with the gauze or gauze sheet, thereby avoiding scratching and producing hair under high-speed rotation.

[0040] In a preferred embodiment, a recessed barium wire avoidance groove 33 is provided on the cutting edge 32, and the structure of the barium wire avoidance groove 33 is the same as that of the cutting edge 32. When in use, after the release mechanism releases the gauze from the gauze roll, the barium wire is pulled to adhere to the surface of the gauze and moves synchronously with the gauze. When the gauze contacts the cutting edge 32, the barium wire is located in the barium wire avoidance groove 33 and does not contact the cutting edge 32, thereby avoiding breakage caused by scratching.

[0041] Preferably, the structure of the barium wire avoiding groove 33 also has two side inverted slopes with arc transition. During the process of inserting the gauze piece into the drum gap, the gauze piece is folded in half, and the barium wire is located in the barium wire avoiding groove 33, and no breakage will occur during folding.

[0042] In a preferred solution, a negative pressure chamber 42 is axially provided in the center of the roller body 41 of the bottom knife roller 4. The negative pressure holes 43 provided on the surface of the roller body 41 communicate with the negative pressure chamber 42, and the hollow shafts at both ends of the roller body 41 communicate with the negative pressure chamber 42. During use, one end of the hollow shaft of the roller body 41 is connected to a centrifugal fan. When the centrifugal fan works, negative pressure is generated in the negative pressure chamber 42, so that negative pressure is generated around the negative pressure holes 43 on the surface of the roller body 41, acting on the gauze to adsorb it.

[0043] In a preferred solution, two axially symmetric tool inserting grooves 44 are provided on the surface of the roller body 41 along the center line. The tool inserting groove 44 includes a rectangular notch connected by a circular hole. The bearing 2 is located in the circular hole and cooperates with it, and the tool 3 extends out of the rectangular notch. During the use process, when the extension amount of the tool 3 needs to be adjusted, the fastening tool penetrates from the rectangular notch of the tool inserting groove 44 into the circular hole to cooperate with the fastener, and the fastener is rotated to loosen or lock it; when loosening, the tool 3 is pushed and pulled to adjust the amount of the cutting edge 32 extending out of the rectangular notch, and then the fastener is locked. During the adjustment process, there is no need to take out the roller shaft 1 from the tool inserting groove 44.

[0044] In a preferred solution, a counter knife 45 is installed in two axially symmetric counter knife grooves provided on the surface of the roller body 41 along the center line, and a negative pressure window 46 is provided on one side close to the counter knife 45. During use, the gauze passing over the clamping point of the bottom knife roller 4 and the cutting knife roller is first adsorbed by the negative pressure window 46, and then supported by the tool 3 and adsorbed by the negative pressure holes 43 on the surface of the bottom knife roller 4.

[0045] In a preferred solution, the negative pressure holes 43 and the negative pressure grooves 47 in the negative pressure window 46 communicate with the negative pressure chamber 42, and the diamond gauze 48 cooperates with the negative pressure window 46 for sealing; the pore diameter of the mesh holes of the diamond gauze 48 is much smaller than the pore diameter of the negative pressure holes 43, and the hole area of the negative pressure holes 43 is much smaller than the cross-sectional area of the notch of the negative pressure groove 47. During use, the negative pressure air volume of the negative pressure groove 47 is larger than that of other areas, so that the adsorption force of the diamond gauze 48 in the corresponding area above it is stronger; the diamond gauze 48 has dense mesh holes, and the pore diameter of the mesh holes is smaller than the pore diameter of the negative pressure holes 43, so that the adsorption force generated per unit area is stronger, enabling the gauze piece to closely adhere to the surface of the diamond gauze 48.

[0046] Preferably, with the support point of the inserting knife 3 as the baseline, one end of the gauze piece is closely adsorbed to the surface of the diamond gauze 48, and the other end is adsorbed to the surface of the roller body 41. The adsorption force of the end adsorbed by the diamond gauze 48 is stronger. During the process of transferring the gauze piece, the inserting knife 3 needs to fold the gauze piece and insert it into the gap of the drum, causing the two ends of the gauze piece to be pulled. During this process, one end of the gauze piece is firmly adsorbed by the diamond gauze 48, so that the end of the gauze piece will not be drawn.

[0047] In a preferred solution, the method for avoiding damaging the barium wire under high-speed conditions as described above includes the following steps:

[0048] S1, clamping: After the gauze roll releases the gauze, it is drawn into the space between the bottom knife roller 4 and the cutting knife roller together with the barium wire, and is clamped by the bottom knife roller 4 and the cutting knife roller; in this step, the barium wire adheres to the gauze and forms an integral body with it;

[0049] S2, traction: The bottom knife roller 4 and the cutting knife roller rotate in opposite directions to pull the gauze to move, and the gauze is pulled across the clamping point of the bottom knife roller 4 and the cutting knife roller;

[0050] S3, adsorption: The gauze passing over the clamping point is first adsorbed by the negative pressure window 46, and then supported by the inserting knife 3 and adsorbed by the negative pressure holes 43 on the surface of the bottom knife roller 4; in this step, the gauze is closely attached to the surfaces of the diamond gauze 48 and the roller body 41;

[0051] S4, slitting: The gauze passing over the clamping point is cut by the butt knife 45 of the bottom knife roller 4 and the cutting knife of the cutting knife roller, and the gauze passing over the clamping point becomes a gauze piece after being cut;

[0052] S5, transfer: The bottom knife roller 4 rotates at high speed to drive the inserting knife 3 to insert the gauze piece into the gap of the drum, and the drum transfers the gauze piece;

[0053] S6, anti-scratching before slitting: In S2, the bottom knife roller 4 rotates at high speed to drive the inserting knife 3 to move synchronously with it. Before the inserting knife 3 approaches the bottom knife roller 4 and the cutting knife roller, the inserting knife 3 gradually contacts the gauze and pushes the gauze into the knife-avoiding hole of the cutting knife roller, so that the inserting knife 3 can cross the cutting point position of the bottom knife roller 4 and the cutting knife roller; during this process, the cutting edge 32 of the inserting knife 3 forms a surface contact with the gauze and swings slightly, and the barium wire on the gauze is located in the barium wire avoidance groove 33;

[0054] S7, anti-scratching after slitting: In S5, during the process of the inserting knife 3 inserting the gauze piece into the drum gap, the two ends of the gauze piece are pulled; during this process, the cutting edge 32 of the inserting knife 3 forms a surface contact with the gauze and swings slightly, and the barium wire on the gauze is located in the barium wire avoidance groove 33.

[0055] The above method effectively prevents the generation of wool yarn caused by scratching before gauze slitting, and avoids the breakage of the barium wire during the transfer of the gauze piece to the drum after slitting.

[0056] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. In the present application, the embodiments and the features in the embodiments can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An inserting knife roller structure for avoiding damage to barium wires in a high-speed state, characterized in that: It includes a roller shaft (1), bearings (2), inserting knives (3) and a bottom knife roller (4); the bearings (2) are fitted with the shaft heads (11) at both ends of the roller shaft (1), the adjusting holes (31) on one side of the inserting knives (3) correspond to the connecting holes (12) on the roller shaft (1), the cutting edges (32) of the inserting knives (3) extend out of one side of the roller shaft (1), and the roller shaft (1) and the bearings (2) are located in the inserting knife grooves (44) of the bottom knife roller (4); a barium wire avoidance groove (33) is arranged on the cutting edge (32) of the inserting knife (3), and the inserting knife (3) swings slightly in the inserting knife groove (44). The roller shaft (1) is a semi-circular shaft body, the shaft heads (11) are connected to both ends of the semi-circular shaft body, and a plurality of connecting holes (12) are axially arranged on the horizontal plane of the semi-circular shaft body. The inserting knife (3) is a horizontal flat plate, an adjusting hole (31) is arranged on one side, the cutting edge (32) is on the corresponding side of the adjusting hole (31), and the adjusting hole (31) is a U-shaped groove hole. A negative pressure cavity (42) is axially arranged at the center of the roller body (41) of the bottom knife roller (4), the negative pressure holes (43) arranged on the surface of the roller body (41) are communicated with the negative pressure cavity (42), and the hollow shafts at both ends of the roller body (41) are communicated with the negative pressure cavity (42). Two counter-knife grooves symmetrically arranged along the center line are axially arranged on the surface of the roller body (41), and a counter-knife (45) is installed in the counter-knife grooves, and a negative pressure window (46) is arranged on one side close to the counter-knife (45). Two inserting knife grooves (44) symmetrically arranged along the center line are axially arranged on the surface of the roller body (41), the inserting knife groove (44) includes a rectangular notch connected by a circular hole, the bearing (2) is located in the circular hole and is fitted with it, and the inserting knife (3) extends out of the rectangular notch. The negative pressure holes (43) and the negative pressure grooves (47) in the negative pressure window (46) are communicated with the negative pressure cavity (42), and a diamond wire mesh (48) is fitted with the negative pressure window (46) for sealing; the pore diameter of the mesh holes of the diamond wire mesh (48) is much smaller than the pore diameter of the negative pressure holes (43), and the hole area of the negative pressure holes (43) is much smaller than the cross-sectional area of the notch of the negative pressure groove (47).

2. The knife-inserting roller structure for avoiding damage to the barium wire in a high-speed state according to claim 1, characterized in that: The cutting edge (32) is a structure with inverted slopes on both sides, and the front edge tip is in arc transition with the side inverted slopes.

3. The structure of the inserting cutter roller for avoiding damage to the barium wire in the high-speed state according to claim 1, characterized in that: A recessed barium wire avoidance groove (33) is arranged on the cutting edge (32), and the structure of the barium wire avoidance groove (33) is the same as that of the cutting edge (32).

4. The method for avoiding damage to the barium wire in a high-speed state according to any one of claims 1 to 3, characterized in that, It includes the following steps: S1, clamping. After the gauze roll releases the gauze, it is drawn into the space between the bottom knife roller (4) and the cutting knife roller together with the barium wire, and is clamped by the bottom knife roller (4) and the cutting knife roller; in this step, the barium wire adheres to the gauze to form a whole with it. S2, traction. The bottom knife roller (4) and the cutting knife roller rotate in opposite directions to pull the gauze to move, and the gauze is pulled across the clamping point of the bottom knife roller (4) and the cutting knife roller. S3, adsorption. The gauze that crosses the clamping point is first adsorbed by the negative pressure window (46), and then is adsorbed by the negative pressure holes (43) on the surface of the bottom knife roller (4) after being propped up by the inserting knife (3). In this step, the gauze is closely attached to the surface of the diamond wire mesh (48) and the roller body (41). S4, cutting. The gauze that crosses the clamping point is cut by the counter-knife (45) of the bottom knife roller (4) and the cutting knife of the cutting knife roller, and the gauze that crosses the clamping point becomes a gauze piece after being cut. S5. Transfer. The bottom cutter roller (4) rotates at a high speed to drive the inserting knife (3) to insert the gauze piece into the gap of the rotating drum, and the rotating drum transfers the gauze piece. S6. Anti-scratch before slitting. In S2, the bottom cutter roller (4) rotates at a high speed to drive the inserting knife (3) to move synchronously with it. Before the inserting knife (3) approaches the bottom cutter roller (4) and the cutting knife roller, the inserting knife (3) gradually contacts the gauze and pushes the gauze into the knife-avoiding hole of the cutting knife roller, so that the inserting knife (3) can cross the cutting point positions of the bottom cutter roller (4) and the cutting knife roller. During this process, the cutting edge (32) of the inserting knife (3) makes a surface contact with the gauze and swings slightly, and the barium line on the gauze is located in the barium line avoiding groove (33). S7. Anti-scratch after slitting. In S5, during the process of the inserting knife (3) inserting the gauze piece into the gap of the rotating drum, the two ends of the gauze piece are pulled. During this process, the cutting edge (32) of the inserting knife (3) makes a surface contact with the gauze and swings slightly, and the barium line on the gauze is located in the barium line avoiding groove (33).

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