CN107139025B - Automatic grinding system for cutting edge of medical surgical blade - Google Patents

Abstract

The base of the automatic grinding system for the cutting edge of the medical surgical blade is provided with a knife blank clamping and moving device, a four-station rotating device is arranged in the knife blank clamping and moving device, and the feeding and discharging device is arranged above the four-station rotating device; the two sides of the four-station rotating device are respectively provided with a first grinding subsystem and a second grinding subsystem; and the feeding and discharging device feeds the cutter blanks into the cutter blank clamping and moving device, the four-station rotating device drives the cutter blanks to rotate to the first grinding processing subsystem, one end cutting edge of each cutter blank is ground, the cutter blanks are rotated to the second grinding processing subsystem at the other side, the other end cutting edge is ground, and the feeding and discharging device returns materials after grinding. The automatic grinding system for the cutting edge of the medical surgical blade can automatically finish the grinding processing and feeding and discharging procedures of the surgical blade, can reduce the labor intensity of workers, improves the labor productivity and is beneficial to controlling the product quality; the production efficiency is obviously improved, and good economic benefit can be obtained.

Description

Automatic grinding system for medical surgical blade edge

Technical Field

The invention belongs to the field of mechanical equipment, and in particular relates to an automatic grinding system for a medical surgical blade edge.

Background technique

The scalpel is one of the most commonly used medical instruments in surgical operations. The scalpel consists of a handle and a blade mounted on the handle. The handle is generally a component that is reused many times, while the blade is disposable, so the demand is relatively large. However, the production of surgical blades has always been considered a labor-intensive processing field, especially the sharpening and edge polishing of surgical blades have been done manually for many years, resulting in low production efficiency and high labor intensity for workers. At the same time, due to the influence of human factors, the consistency of the blade edge is poor and the sharpness of the blade edge cannot be guaranteed. Through literature search, it is found that since 2012, my country has successively published and authorized several invention patents in the field of automatic grinding systems for surgical blades, such as: sharpening mechanism and grinding device for automatic grinding device of surgical blade edge (CN201510146804.7), automatic compensation mechanism for grinding wheel wear (CN201210278565.7), automatic grinding machine for surgical blade edge (CN201110293837.6), etc. The basic principle of these inventions is to automatically or semi-automatically clamp the blade blank to a linear or rotary moving workbench according to a certain beat. When the blade blank moves to different stations of the workbench, the grinding head installed at the station grinds the blade blank. In order to grind a curved edge, the grinding head can be programmed to move according to the set trajectory, or the blade fixture can perform programmed trajectory movement to achieve the same purpose. Like other types of grinding systems, in order to compensate for the wear of the grinding wheel, the system is generally equipped with an automatic or semi-automatic grinding wheel compensation mechanism.

Summary of the invention

The present invention provides an automatic grinding system for the edge of a medical surgical blade, which replaces traditional manual sharpening, reduces labor costs, avoids defects such as poor product quality consistency and insufficient edge sharpness caused by human factors during the sharpening process, realizes the mechanization and automation of medical surgical blade sharpening, and improves the production efficiency and quality of surgical blades.

The present invention adopts the following technical solution:

The invention discloses an automatic grinding system for the cutting edge of a medical surgical blade, comprising a grinding processing subsystem 1, a grinding processing subsystem 2, a loading and unloading device, a four-station rotating device, a blade blank clamping and moving device, and a base; the base is provided with a blade blank clamping and moving device, a four-station rotating device is provided in the blade blank clamping and moving device, and the loading and unloading device is arranged above the four-station rotating device; a grinding processing subsystem 1 and a grinding processing subsystem 2 are provided on both sides of the four-station rotating device respectively; the loading and unloading device sends the blade blank into the blade blank clamping and moving device, and the four-station rotating device drives the blade blank to rotate to the grinding processing subsystem 1, grinds the cutting edge at one end of the blade blank, and then rotates the blade blank to the grinding processing subsystem 2 on the other side, grinds the cutting edge at the other end, and the loading and unloading device returns the material after grinding.

The medical surgical blade edge automatic grinding system described in the present invention comprises a grinding processing subsystem including a grinding motor, a cup-shaped grinding wheel, an inclined vertical lead screw slide, an inclined guide rail platform, a grinding wheel feeding servo motor, a horizontal lead screw slide, and a horizontal lead screw guide rail; a horizontal lead screw slide is provided on the horizontal lead screw guide rail, the horizontal lead screw slide slides along the extension direction of the horizontal lead screw guide rail, and an inclined guide rail platform is provided on the horizontal lead screw slide; an inclined vertical lead screw slide is provided on the inclined surface of the inclined guide rail platform; a grinding motor is arranged on the inclined vertical lead screw slide, and the grinding motor drives the cup-shaped grinding wheel; and a grinding wheel feeding servo motor controls the movement of the inclined vertical lead screw slide.

The automatic grinding system for the edge of a medical surgical blade described in the present invention comprises a loading and unloading device comprising a blade blank storage box, a pushing ruler, a pushing cylinder, a loading pneumatic finger, two unloading pneumatic fingers, and a blade blank guide groove; the blade blank guide groove is arranged at the discharge end of the blade blank storage box, and the pushing ruler pushes the blade blank into the blade blank guide groove through the pushing cylinder; the loading pneumatic finger and the unloading pneumatic finger are arranged in a straight line; the loading pneumatic finger is arranged above the blade blank guide groove; and the unloading pneumatic finger is located on a four-station rotating device.

The medical surgical blade edge automatic grinding system of the present invention comprises a four-station rotating device comprising a blank fixture, a first gear tooth arc, a second gear tooth arc, a pneumatic motor, a four-station turntable, a four-station indexing drive motor, and an indexer; the four-station indexing drive motor is connected to the indexer, a four-station turntable is provided on the indexer, and each station portion of the four-station turntable is respectively provided with a first gear tooth arc and a second gear tooth arc; the first gear tooth arc is meshed with the second gear tooth arc, a blank fixture is provided on the outer side wall of the first gear tooth arc, and the pneumatic motor controls the second gear tooth arc to rotate; the first gear tooth arc drives the blank fixture to rotate in an arc shape.

The automatic grinding system for the edge of a medical surgical blade described in the present invention also includes a bearing seat and a bracket; the four-station turntable is arranged between the bearing seat and the bracket through a rotating shaft, and its axis coincides with the axis of the bearing seat.

The automatic grinding system for the edge of a medical surgical blade described in the present invention also includes a limit block; the limit blocks are respectively arranged at the front and rear ends of the swing trajectory of the gear tooth arc 2; the outer side of the limit block is connected to a push rod, and the push rod is driven by a cylinder; the spacing between the two limit blocks is adjusted to control the swing angle of the gear tooth arc 2.

The grinding method of the automatic grinding system for the edge of a medical surgical blade of the present invention comprises the following steps:

1). Push the blade blank into the guide groove through the spring pushing device.

2). The feed ruler in the guide groove pushes the blade blank to the pneumatic fingers, which clamp it and then send it to the fixture of the four-station rotating device for clamping.

3). Start the four-station rotating device, and send the blade blank to the cup grinding wheel through rotation to grind the blade edge.

4). Adjust the grinding feed system according to the working wear of the cup grinding wheel to compensate for the working wear of the cup grinding wheel.

5). After grinding, the pneumatic finger clamps the blade to the unloading slide rail, and under the action of gravity, the blade falls along the slide rail to the finished product slot for stacking.

Beneficial Effects

The automatic grinding system for the edge of a medical surgical blade described in the present invention can automatically complete the grinding process and loading and unloading process of a surgical blade. Compared with the existing surgical blade grinding process method, the present invention can reduce the labor intensity of workers, improve labor productivity, and is beneficial to controlling product quality. At the same time, because the system can work continuously and quickly for a long time, the enterprise only needs to use less manpower to complete the processing and production of a large number of surgical blades, the production efficiency is significantly improved, and good economic benefits can be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a processing surgical blade according to the present invention;

FIG2 is a schematic diagram of the grinding system composition of the present invention;

FIG3 is a schematic diagram of the grinding table structure of the present invention;

FIG4 is a schematic diagram of a knife blank clamping and moving device of the present invention;

FIG5 is a schematic diagram of a vertical four-station rotary workbench of the present invention;

FIG6 is a loading and unloading device of the present invention;

FIG7 is a schematic diagram of the working of the blade blank fixture of the present invention;

FIG8 is a schematic diagram of the indexing and axial movement of the rotary table of the present invention;

FIG9 is a side view of a rotary table of the present invention;

In the figure: 1. Grinding processing subsystem 1, 2. Grinding processing subsystem 2, 3. Loading and unloading device, 4. Four-station rotating device, 5. Blade blank clamping and moving device, 6. Base, 7. Grinding motor, 8. Cup grinding wheel, 9. Inclined vertical screw slide, 10. Inclined guide rail table, 11. Grinding wheel feed servo motor, 12. Slide, 13. Guide rail 1, 14. Adjustment handle, 15. Blade blank storage box, 16. Spring, 17. Top plate, 18. Blade blank, 19. Push ruler, 20. Push rod, 21. Feeding cylinder, 22. Loading pneumatic finger, 23. Unloading pneumatic finger, 24. Pneumatic finger driving cylinder, 25. Slider, 2 6. Guide rail 2, 27. Knife blank, 28. Knife blank guide groove, 29. Knife blank guiding device, 30. Ejector, 31. Knife blank fixture handle, 32. Roller, 33. Fan gear limit block, 34. Knife blank fixture, 35. Gear tooth arc 1, 36. Gear tooth arc 2, 37. Pneumatic motor, 38. Four-station turntable, 39. Four-station rotary indexing motor, 40. Guide rail 3, 41. Indexer, 42. Rotary air distribution valve, 43. Linear feed servo motor, 44. Four-station rotary worktable spindle, 45. Slide, 46. Cylinder 1, 47. Cylinder 2, 48. Ejector, 49. Guide rail adjustment pad, 50. Bearing seat, 51. Bracket.

Detailed ways

The present invention is further described in detail below in conjunction with the accompanying drawings:

As shown in the figure: a medical surgical blade edge automatic grinding system includes a grinding processing subsystem 1, a grinding processing subsystem 2, a loading and unloading device 3, a four-station rotating device 4, a blade blank clamping and moving device 5, and a base 6; the base 6 is provided with a blade blank clamping and moving device 5, and the blade blank clamping and moving device 5 is provided with a four-station rotating device 4, and the loading and unloading device 3 is arranged above the four-station rotating device 4; the grinding processing subsystem 1 and the grinding processing subsystem 2 2 are respectively provided on both sides of the four-station rotating device 4; the loading and unloading device 3 sends the blade blank into the blade blank clamping and moving device 5, and the four-station rotating device 4 drives the blade blank to rotate to the grinding processing subsystem 1, grinds the blade edge at one end of the blade blank, and then rotates the blade blank to the grinding processing subsystem 2 2 on the other side to grind the blade edge at the other end, and the loading and unloading device 3 returns the material after grinding.

The grinding processing subsystem includes a grinding motor 7, a cup grinding wheel 8, an inclined vertical screw slide 9, an inclined guide rail platform 10, a grinding wheel feed servo motor 11, a horizontal screw slide 12, and a horizontal screw guide rail 13; the horizontal screw guide rail 13 is provided with a horizontal screw slide 12, the horizontal screw slide 12 slides along the extension direction of the horizontal screw guide rail 13, and the horizontal screw slide 12 is provided with an inclined guide rail platform 10; an inclined vertical screw slide 9 is provided on the inclined surface of the inclined guide rail platform 10; the grinding motor 7 is arranged on the inclined vertical screw slide 9, and the grinding motor 7 drives the cup grinding wheel 8; the grinding wheel feed servo motor 11 controls the movement of the inclined vertical screw slide 9.

The loading and unloading device includes a knife blank storage box 15, a pushing ruler 19, a pushing cylinder 21, a loading pneumatic finger 22, a unloading pneumatic finger 23, and a knife blank guide groove 28; the knife blank guide groove 28 is arranged at the discharge end of the knife blank storage box 15, and the pushing ruler 19 pushes the knife blank into the knife blank guide groove 28 through the pushing cylinder 21; the loading pneumatic finger 22 and the unloading pneumatic finger 23 are arranged in a straight line; the loading pneumatic finger 22 is arranged above the knife blank guide groove 28; the unloading pneumatic finger 23 is located on the four-station rotating device 4.

The four-station rotating device comprises a blank fixture, gear tooth arc 1, gear tooth arc 2, a pneumatic motor, a four-station turntable, a four-station indexing drive motor, and an indexer; the four-station indexing drive motor is connected to the indexer, a four-station turntable is provided on the indexer, and each station portion of the four-station turntable is respectively provided with gear tooth arc 1 and gear tooth arc 2; gear tooth arc 1 is meshed with gear tooth arc 2, a blank fixture is provided on the outer side wall of gear tooth arc 1, and the pneumatic motor controls the rotation of gear tooth arc 2; gear tooth arc 1 drives the blank fixture to rotate in an arc shape.

The four-station turntable 38 is arranged between the bearing seat 50 and the bracket 51 via a rotating shaft, and its axis coincides with the axis of the bearing seat 50 .

Limit blocks are arranged respectively at the front and rear ends of the two swinging trajectory routes of the gear tooth arc; the outer side of the limit block is connected to a push rod, and the push rod is driven by a cylinder; the spacing between the two limit blocks is adjusted to control the swing angle of the gear tooth arc.

The specific workflow process is as follows:

(1) Fill the blade blank storage box 15 with blade blanks 18, start the electrical control system, and the spring 16 in the blade blank storage box 15 is compressed to automatically push the blade blanks 18 from the blade blank storage box 15 to the blade blank guide groove 28.

(2) Start the feeding cylinder 21, push the pusher 19 to move forward in a straight line, and push the blade blank 18 along the guide groove 28 to the middle position of the opened feeding pneumatic finger 22. At this time, close the feeding pneumatic finger 22 to clamp the blank blade 18, and then start the pneumatic finger driving cylinder 24 to push the feeding pneumatic finger 22 forward along the guide rail 2 26 to the top of the blade blank clamping and moving device 5 of the four-station rotating device 4, and then the pneumatic finger driving cylinder 24 retreats, driving the feeding pneumatic finger 22 to retreat to the initial position. At this point, the feeding action is completed.

(3) Start the cylinder 46 in the base of the automatic feeding system, and the actuator pushes the push rod 30 forward until it hits the roller 32 on the blade clamp handle 31. At this time, the locking device inside the blade clamp 34 is locked to clamp the blade 27 to be sharpened.

(4) The four-station rotary indexing motor 39 is started, and the four-station rotary indexing motor 39 drives the indexer 41 to work. The indexer 41 rotates 90° at a time, and transmits torque by rotating the four-station rotary table spindle 44, driving the four-station turntable 38 to rotate together. After the first rotation of 90°, the blade blank 27 is located below the cup grinding wheel 8 of the grinding processing subsystem 1.

(5) Start the grinding wheel feed servo motor 11 in the grinding subsystem, drive the grinding motor 7 on the inclined vertical screw slide 9 to feed downward to the grinding position, so that the cup-shaped grinding wheel 8 and the blade 27 are in contact, start the grinding motor 7, and grind one side of the cutting edge of the blade 27.

(6) After the grinding process begins, the linear feed servo motor 43 is started to feed the four-station rotating device 4 along the length direction of the main shaft to grind the straight line portion of the cutting edge of the blade blank 27. When the straight line portion is ground, the pneumatic motor 37 on the four-station turntable 38 is started, which drives the gear tooth arc 1 35 and the gear tooth arc 2 36 to rotate a certain angle until the gear tooth arc 2 36 hits the sector gear limit block 33 and stops. This process forms an arc feed trajectory, thereby grinding the arc portion of the cutting edge of the blade blank 27.

(7) The indexer 41 continues to rotate 90° twice each time until the other side of the blade blank is located below the cup grinding wheel 8 of the grinding processing subsystem 2, and the working process in (5) and (6) is repeated to complete the grinding of the other side of the cutting edge of the blade blank 27.

(8) The indexer 41 rotates for the fourth time, so that the blade blank 27 returns to the bottom of the unloading pneumatic finger 23, and the unloading pneumatic finger 23 is started to clamp the finished blade. The cylinder 2 47 above the bracket of the four-station rotating device 4 is started to push the push rod 48 to hit the roller 32 on the blade blank clamp handle 31, so that the blade blank clamp 34 is loosened. The pneumatic finger driving cylinder 24 is started to push the unloading pneumatic finger 23 forward along the guide rail to the top of the unloading chute. At this time, the unloading pneumatic finger 23 is released, and the finished blade is allowed to slide along the unloading chute to the finished product box for stacking under its own gravity.

At this point, a processing cycle is completed.

The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (4)

1. An automatic grinding system for a medical surgical blade cutting edge is characterized in that: comprises a first grinding subsystem (1), a second grinding subsystem (2), a loading and unloading device (3), a four-station rotating device (4), a knife blank clamping and moving device (5) and a base (6); the base (6) is provided with a cutter blank clamping and moving device (5), a four-station rotating device (4) is arranged in the cutter blank clamping and moving device (5), and the feeding and discharging device (3) is arranged above the four-station rotating device (4); the two sides of the four-station rotating device (4) are respectively provided with a first grinding subsystem (1) and a second grinding subsystem (2); feeding the cutter blanks into a cutter blank clamping and moving device (5) by an upper and lower feeding device (3), driving the cutter blanks to rotate to a first grinding processing subsystem (1) by a four-station rotating device (4), grinding one end cutting edge of the cutter blanks, rotating the cutter blanks to a second grinding processing subsystem (2) on the other side, grinding the other end cutting edge, and returning the materials by the upper and lower feeding device (3) after grinding; the grinding subsystem comprises a grinding motor (7), a cup-shaped grinding wheel (8), an inclined vertical screw sliding table (9), an inclined guide rail table (10), a grinding wheel feeding servo motor (11), a horizontal screw sliding table (12) and a horizontal screw guide rail (13); the horizontal screw guide rail (13) is provided with a horizontal screw sliding table (12), the horizontal screw sliding table (12) slides along the extending direction of the horizontal screw guide rail (13), and the horizontal screw sliding table (12) is provided with an oblique guide rail table (10); an inclined vertical screw sliding table (9) is arranged on the inclined surface of the inclined guide rail table (10); the grinding motor (7) is arranged on the inclined vertical screw sliding table (9), and the grinding motor (7) drives the cup-shaped grinding wheel (8); a grinding wheel feeding servo motor (11) controls the movement of the inclined vertical screw sliding table (9); the feeding and discharging device comprises a cutter blank storage box (15), a pushing ruler (19), a pushing cylinder (21), feeding pneumatic fingers (22), discharging pneumatic fingers (23) and a cutter blank guide groove (28); a cutter blank guide groove (28) is arranged at the discharge end of the cutter blank storage box (15), and a cutter blank is pushed into the cutter blank guide groove (28) by a pushing ruler (19) through a pushing cylinder (21); the feeding pneumatic finger (22) and the discharging pneumatic finger (23) are arranged in a straight line; a feeding pneumatic finger (22) is arranged above the knife blank guide groove (28); the discharging pneumatic finger (23) is positioned on the four-station rotating device (4);

The four-station rotating device comprises a blank clamp (34), a gear arc I (35), a gear arc II (36), a pneumatic motor (37), a four-station rotary table (38), a four-station indexing driving motor (39) and an indexer (41); the four-station indexing driving motor (39) is connected with the indexer (41), the indexer (41) is provided with a four-station rotary table (38), and each station part of the four-station rotary table (38) is respectively provided with a gear tooth arc I (35) and a gear tooth arc II (36); the gear tooth arc I (35) is meshed with the gear tooth arc II (36), a blank clamp (34) is arranged on the outer side wall of the gear tooth arc I (35), and a pneumatic motor (37) controls the gear tooth arc II (36) to rotate; the gear tooth arc one (35) drives the blank clamp (34) to rotate in an arc shape.

2. The automatic sharpening system for the cutting edge of a medical surgical blade according to claim 1, wherein; the device also comprises a bearing seat (50) and a bracket (51); the four-station turntable (38) is arranged between the bearing seat (50) and the bracket (51) through a rotating shaft, and the axis of the four-station turntable is coincident with the axis of the bearing seat (50).

3. The automatic sharpening system for the cutting edge of a medical surgical blade according to claim 2, wherein; the device also comprises a limiting block (33); limiting blocks (33) are respectively arranged at the front end and the rear end of the swing track route according to a gear tooth arc II (36); the outer side of the limiting block (33) is connected with a push rod (48), and the push rod (48) is driven by a cylinder; the distance between the two limiting blocks (33) is used for adjusting and controlling the swing angle of the gear arc II (36).

4. A grinding method using the automatic grinding system for the cutting edge of a medical surgical blade according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:

1) Pushing the blade blank into the guide groove through a spring pushing device;

2) Pushing the blade blank to a pneumatic finger by a feeding ruler in the guide groove, clamping by the pneumatic finger, and then clamping by a clamp of the four-station rotating device;

3) Starting a four-station rotating device, and conveying the blade blank to a cup-shaped grinding wheel for grinding the blade edge through rotation;

4) Adjusting a grinding feeding system according to the working loss condition of the cup-shaped grinding wheel to compensate the working consumption of the cup-shaped grinding wheel;

5) And after grinding, the blade is clamped to the blanking slide rail by the pneumatic finger, and falls to the finished product groove to be stacked along the slide rail under the action of gravity.