An automatic assembly mechanism for the head and handle of a surgical knife

Abstract

The present application relates to a kind of automatic assembly mechanism of knife head and knife handle in scalpel production, including the assembly turntable capable of rotating along vertical center, the top of the assembly turntable is provided with two opposite knife handle assembly clamps along the edge of diameter direction two sides, the position of one of the knife handle assembly clamps is the combined station for the assembly of knife head and knife handle, the position of the other knife handle assembly clamp is the feeding station for the feeding of knife handle, and the feeding station for the feeding of knife head and knife handle after assembly, the outside of assembly turntable is provided with three-axis motion module, the free end of three-axis motion module is provided with knife head clamp, the knife head clamp is adjacent to the knife handle assembly clamp at combined station on assembly turntable, and high-frequency induction heating coil is also provided on the side of combined station upper side.In the assembly of knife head and knife handle, knife head is heated by high-frequency induction heating coil, so that knife head can be combined with knife handle to form a solid unit.

Description

Technical Field

[0001] This invention relates to the field of surgical scalpel manufacturing technology, specifically to an automatic assembly mechanism for the scalpel head and handle in surgical scalpel manufacturing. Background Technology

[0002] In the production of scalpels, to improve production efficiency, automated assembly lines are needed to assemble the blade and handle into a single unit. The blade is typically made of metal, with a bend in the middle causing the top cutting edge to tilt. The handle is made of plastic, with a recessed cavity at its axial center. The lower end of the blade is inserted into this cavity, allowing the handle to fit over the blade. Initially, the blade and handle were fitted with a clearance fit, with adhesive applied to the gap to bond them together. However, this assembly method is prone to instability and loosening during use, resulting in many defective products. Furthermore, due to gap errors during production, if the gap is too small, it's difficult to insert the blade properly, and excessive force can cause cracks. If the gap is too large, the blade may fall out during later use, leading to low assembly quality. Additionally, the handle has specific gripping grooves and is fitted at a fixed angle to the blade's angle, making manual assembly prone to errors. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an automatic assembly mechanism for the blade head and handle in the production of surgical scalpels, thereby solving the problem of the insertion and assembly of the blade head and handle.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: It includes an assembly turntable capable of rotating along a vertical center. Two opposing tool holder assembly grippers are arranged on both sides of the top of the assembly turntable along the diametrical direction. One tool holder assembly gripper is located at a combination station for assembling the tool head and tool holder, while the other tool holder assembly gripper is located at a loading / unloading station for loading the tool holder and unloading the assembled tool head and tool holder. A three-axis motion module is arranged on the outer side of the assembly turntable. A tool head gripper is arranged on the free-moving end of the three-axis motion module. The tool head gripper is adjacent to the tool holder assembly gripper at the combination station on the assembly turntable. A high-frequency induction heating coil is also installed on the upper side of the assembly station. When the cutter head and the tool holder are assembled, the cutter head is held vertically upward in the cutter head chuck, and the tool holder assembly chuck at the loading and unloading station holds the transported tool holder vertically in the tool holder assembly chuck. The assembly turntable rotates, causing the tool holder assembly chuck holding the tool holder to rotate to the assembly station. The three-axis motion module first drives the cutter head chuck to insert the lower end of the cutter head into the high-frequency induction heating coil to heat the lower end of the cutter head. Then, the three-axis motion module moves the heated lower end of the cutter head and inserts it into the round hole cavity at the top of the tool holder on the tool holder assembly chuck at the assembly station, so that the cutter head and the tool holder are bonded and assembled together.

[0005] As a preferred embodiment, a transfer turntable is coaxially arranged on the outer side of the assembly turntable near the loading and unloading station. Four tool holder transfer grippers are evenly distributed on the top circumference of the transfer turntable. The transfer turntable rotates clockwise each time. The tool holder transfer gripper on the side closer to the assembly turntable is opposite to the tool holder assembly gripper at the loading and unloading station. The position of the tool holder transfer gripper away from the loading and unloading station is the tool holder loading station. The position of the tool holder transfer gripper at the next station after the transfer turntable rotates from the loading and unloading station is the unloading station.

[0006] As a preferred embodiment, one side of the transfer turntable is also provided with a tool holder loading motion module and a tool holder unloading motion module. The free end of the tool holder loading motion module is provided with a tool holder loading gripper, which can move and transfer the transported tool holder to the tool holder transfer gripper at the tool holder loading station.

[0007] In a preferred embodiment, the free end of the unloading motion module is provided with an unloading gripper, which clamps and removes the assembled tool holder and tool head from the unloading station of the transfer turntable.

[0008] In a preferred embodiment, a cutter head feeding motion module is provided upstream of the cutter head gripper. A cutter head rotating seat for holding the cutter head is provided at the top of the free end of the cutter head feeding motion module. A cutter head direction detection camera is provided above the path of the cutter head rotating seat. After the cutter head direction detection camera detects the cutting edge direction of the vertical cutter head at the top of the cutter head rotating seat, the cutter head rotating seat rotates to adjust the cutter head to a fixed angle position. Then, the cutter head feeding motion module moves to send the cutter head onto the cutter head gripper.

[0009] As a preferred embodiment, the cutter head rotating seat, the cutter head direction detection camera, and the cutter head feeding motion module are each provided in two sets.

[0010] In a preferred embodiment, the high-frequency induction heating coil is mounted on the high-frequency heater, which is fixed on the same side of the three-axis motion module.

[0011] In a preferred embodiment, the diameter of the circular cavity at the top of the tool holder is smaller than the diameter of the lower end of the tool tip.

[0012] The beneficial effects of this invention are as follows: By combining various motion modules and cooperating with corresponding grippers, the automatic loading and unloading process of the cutting head and the tool holder is realized. The cutting head and the tool holder are interference fit. Before the assembly of the cutting head and the tool holder, the cutting head is heated by a high-frequency induction heating coil, so that the cutting head is heated and the heat of the cutting head can melt the outer surface of the tool holder, so that the cutting head can be smoothly combined with the tool holder to form a solid whole. In subsequent use, the cutting head and the tool holder are not easy to fall off. Through the cooperation of the assembly turntable and the transfer turntable, the arrangement of the assembly station, the loading and unloading station, the tool holder loading station, and the unloading station of the assembled tool are realized. The overall structure is compact and the operation is smooth. The automated line makes the assembly of the cutting head and the tool holder precise and the product quality uniform and stable. Attached Figure Description

[0013] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the invention from another angle; Figure 3 This is a schematic diagram of the invention from another angle; Figure 4 for Figure 1 A magnified view of a portion of the image; Figure 1-4 Explanation of reference numerals in the attached diagram: 1. Cutter head rotary seat; 2. Cutter head direction detection camera; 3. Three-axis motion module; 4. Unloading gripper; 5. Tool holder loading gripper; 6. Tool holder loading motion module; 7. Tool holder transfer gripper; 8. Transfer turntable; 9. Tool holder assembly gripper; 10. Assembly turntable; 11. High-frequency induction heating coil; 12. Cutter head gripper; 13. Cutter head loading motion module; 14. Unloading motion module. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0015] The present invention describes an automatic assembly mechanism for the blade head and handle in the production of surgical scalpels. See also... Figure 1As shown, the assembly turntable 10 is rotatable along its vertical center. Two opposing tool holder assembly grippers 9 are positioned on the top of the turntable 10 along its diametrical edges. One gripper 9 serves as a combination station for assembling the tool head and tool holder, while the other gripper 9 serves as a loading / unloading station for loading the tool holder and unloading the assembled tool head and tool holder. A three-axis motion module 3 is located on the outer side of the turntable 10. A tool head gripper 12 is positioned at the freely moving end of the three-axis motion module 3. The tool head gripper 12 is adjacent to the tool holder assembly gripper 9 at the combination station on the turntable 10. Above and to the side of the combination station, there is also a... When the high-frequency induction heating coil 11, the cutter head, and the cutter shank are assembled, the cutter head is held vertically upward in the cutter head clamp 12, and the cutter shank assembly clamp 9 at the loading and unloading station is held vertically in the assembly turntable 10. The assembly turntable 10 rotates 180 degrees, causing the cutter shank assembly clamp 9 holding the cutter shank to rotate to the assembly station. The three-axis motion module 3 first drives the cutter head clamp 12 to insert the lower end of the cutter head into the high-frequency induction heating coil 11 to heat the lower end of the cutter head. Then, the three-axis motion module 3 moves the heated lower end of the cutter head and inserts it into the round hole cavity at the top of the cutter shank on the cutter shank assembly clamp 9 at the assembly station, so that the cutter head and the cutter shank are bonded and assembled together.

[0016] Specifically, the high-frequency induction heating coil 11 heats the lower end of the metal blade head through the principle of electromagnetic induction. The heating speed is fast and the heat loss is small, which reduces the temperature rise of the working environment. When the high-temperature blade head is inserted into the central round hole cavity of the plastic handle, the inner wall of the round hole cavity of the handle melts slightly due to the heat of the blade head, so that the blade head can be inserted smoothly. The round hole of the handle and the blade head are in close contact and bond together as the temperature drops, which is very firm. The overall structure is simple and the cost is low, making it suitable for disposable surgical scalpels.

[0017] In this embodiment, a transfer turntable 8 is coaxially arranged on the outer side of the assembly turntable 10 near the loading and unloading station. Four tool holder transfer grippers 7 are evenly distributed on the top circumference of the transfer turntable 8. The transfer turntable 8 rotates 90 degrees in the same clockwise direction each time. The tool holder transfer gripper 7 on the side near the assembly turntable 10 is opposite to the tool holder assembly gripper 9 at the loading and unloading station. The position of the tool holder transfer gripper 7 away from the loading and unloading station is the tool holder loading station. The position of the tool holder transfer gripper 7 at the next station after the transfer turntable 8 rotates from the loading and unloading station is the unloading station. When the tool holder is loaded, the tool holder transfer gripper 7 at the tool holder loading station can clamp the delivered tool holder and rotate with the transfer turntable 8 to send the tool holder to the tool holder assembly gripper 9 at the loading / unloading station of the assembly turntable 10 for clamping; when the assembly is completed and the tool holder is unloaded, the tool holder transfer gripper 7 at the loading / unloading station can transport the tool holder with the tool head to the tool holder assembly gripper 9, clamp it, and rotate it 90 degrees to the unloading station for unloading.

[0018] In this embodiment, a tool holder loading motion module 6 and a tool holder unloading motion module 14 are also provided on one side of the transfer turntable 8. The free end of the tool holder loading motion module 6 is provided with a tool holder loading gripper 5, which can move and transfer the transported tool holder to the tool holder transfer gripper 7 at the tool holder loading station. The transfer turntable 8 not only undertakes the task of loading the tool holder, but also undertakes the task of unloading the assembled tool holder with the cutting head. During the continuous rotation of the transfer turntable 8 in one direction, different circumferential positions carry different stations. The circumferential station at the upstream of the rotation undertakes the task of loading, and the circumferential station at the downstream of the rotation undertakes the task of unloading. Through the cooperation of the assembly turntable 10 and the transfer turntable 8, the simultaneous operation of loading and unloading is realized. The structure is compact, the operating efficiency is high, and the space occupied is small.

[0019] In this embodiment, the free end of the unloading motion module 14 is provided with an unloading gripper 4, which clamps and removes the assembled tool holder and tool head from the unloading station of the transfer turntable 8. The assembled tool head and tool holder are carried out of the assembly line by the unloading gripper 4 and conveyed to the next packaging line by the conveyor belt.

[0020] In this embodiment, a cutter head feeding motion module 13 is provided upstream of the cutter head gripper 12. A cutter head rotating seat 1 for holding the cutter head is provided at the top of the free end of the cutter head feeding motion module 13. A cutter head direction detection camera 2 is provided above the path of the cutter head rotating seat 1. After the vertical cutter head at the top of the cutter head rotating seat 1 is detected by the cutter head direction detection camera 2, the cutter head rotating seat 1 rotates to adjust the cutter head to a fixed angle position. Then, the cutter head feeding motion module 13 moves to send the cutter head onto the cutter head gripper 12. The cutting edge of the cutter head has a certain angle with the overall axis of the cutter head. The handle has a fixed area for holding. For ease of use, there are fixed position requirements when assembling the cutter head and handle. Before the cutter head and handle are inserted and combined, the angle position of the cutter head and handle is adjusted by detection setting and rotation device.

[0021] In this embodiment, two sets of the cutter head rotating seat 1, the cutter head direction detection camera 2, and the cutter head feeding motion module 13 are respectively provided. The cutter head gripper 12 grips one cutter head on the cutter head rotating seat 1 at a time.

[0022] In this embodiment, the high-frequency induction heating coil 11 is disposed on the high-frequency heater, and the high-frequency heater is fixed on the same side of the three-axis motion module 3.

[0023] In this embodiment, the diameter of the circular cavity at the top of the handle is smaller than the diameter of the lower end of the blade. This is an interference fit, eliminating the need for glue, and the handle can be securely fitted onto the blade, forming a single unit.

[0024] The working process of this invention is as follows: As shown in Figure 1-4, the cutting head and the cutting shank are fed simultaneously: Cutter head feeding: The vertical cutter head is held by the cutter head rotating seat 1. The cutter head rotating seat 1 moves forward to the cutter head direction detection camera 2 by the cutter head feeding motion module 13 to detect the direction of the cutter head. The cutter head rotating seat 1 rotates to adjust the cutter head to a specific direction. The cutter head rotating seat 1 drives the cutter head, which has been adjusted, to continue moving forward. The cutter head gripper 12 holds the cutter head on the cutter head rotating seat 1 and brings the cutter head into the high-frequency induction heating coil 11 for heating. Tool holder loading: The tool holder loading gripper 5 of the tool holder loading motion module 6 clamps the vertically adjusted tool holder and transports it to the tool holder transfer gripper 7 at the tool holder loading station of the transfer turntable 8. Figure 1 As shown, the transfer turntable 8 rotates 90 degrees clockwise each time. After rotating 180 degrees, the tool holder transfer jaw 7 holding the tool holder rotates 180 degrees to the loading / unloading station and is in close contact with the assembly turntable 10. The tool holder assembly jaw 9 at the loading / unloading station of the assembly turntable 10 clamps the tool holder on the tool holder transfer jaw 7. After the assembly turntable 10 rotates 180 degrees, the tool holder rotates to the assembly station. Assembly of the cutting head and the tool holder: After heating, the cutting head is moved by the cutting head chuck 12 to the tool holder assembly chuck 9 in the assembly station, directly above the tool holder. The three-axis motion module drives the cutting head chuck 12 to move downward, so that the cutting head is inserted into the central cavity of the tool holder. The cutting head and the tool holder are bonded together, and the assembly process is completed. After assembly, the assembly turntable 10 rotates 180 degrees, and the tool holder assembly gripper 9 of the combination station rotates with the assembled tool head and tool holder to the loading and unloading station, close to the transfer turntable 8. The tool holder transfer gripper 7 of the transfer turntable 8 rotates 90 degrees clockwise, and the unloading motion module 14 drives the unloading gripper 4 to clamp and move the integrated tool head and tool holder away.

[0025] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. An automatic assembly mechanism for the blade head and handle in the production of a surgical scalpel, characterized in that, The assembly turntable (10) is rotatable along its vertical center. Two opposing tool holder assembly grippers (9) are located on the top of the turntable (10) along its diameter. One gripper is positioned as a combination station for assembling the tool head and tool holder, while the other gripper is positioned as a loading / unloading station for loading the tool holder and unloading the assembled tool head and tool holder. A three-axis motion module (3) is located on the outer side of the turntable (10). A tool head gripper (12) is located at the free-moving end of the three-axis motion module (3). The tool head gripper (12) is adjacent to the tool holder assembly gripper (9) at the combination station on the turntable (10). Above and to the side of the combination station, there is also a... When the high-frequency induction heating coil (11) is assembled with the cutter head and the cutter handle, the cutter head is held vertically upward in the cutter head chuck (12). The assembly turntable (10) holds the transported cutter handle vertically in the cutter handle assembly chuck (9) at the loading and unloading station. The assembly turntable (10) rotates 180 degrees, so that the cutter handle assembly chuck (9) holding the cutter handle rotates to the assembly station. The three-axis motion module (3) first drives the cutter head chuck (12) to insert the lower end of the cutter head into the high-frequency induction heating coil (11) to heat the lower end of the cutter head. Then the three-axis motion module (3) moves the heated lower end of the cutter head and inserts it into the round hole cavity at the top of the cutter handle on the cutter handle assembly chuck (9) at the assembly station, so that the cutter head and the cutter handle are bonded and assembled together.

2. The automatic assembly mechanism for the blade head and handle in the production of surgical scalpels according to claim 1, characterized in that, A transfer turntable (8) is coaxially arranged on the outer side of the assembly turntable (10) near the loading and unloading station. Four tool holder transfer grippers (7) are evenly distributed on the top circumference of the transfer turntable (8). The transfer turntable (8) rotates 90 degrees in the same clockwise direction each time. The tool holder transfer gripper (7) on the side near the assembly turntable (10) is opposite to the tool holder assembly gripper (9) at the loading and unloading station. The position of the tool holder transfer gripper (7) away from the loading and unloading station of the transfer turntable (8) is the tool holder loading station. The position of the tool holder transfer gripper (7) at the next station after the transfer turntable (8) rotates from the loading and unloading station is the unloading station.

3. The automatic assembly mechanism for the blade head and handle in the production of surgical scalpels according to claim 1, characterized in that, The transfer turntable (8) is also provided with a tool holder loading motion module (6) and a tool holder unloading motion module (14) on one side. The free end of the tool holder loading motion module (6) is provided with a tool holder loading gripper (5). The tool holder loading gripper (5) can move the transported tool holder to the tool holder transfer gripper (7) at the tool holder loading station.

4. The automatic assembly mechanism for the blade head and handle in the production of surgical scalpels according to claim 3, characterized in that, The free end of the unloading motion module (14) is provided with an unloading gripper (4), which clamps and moves the assembled tool holder and tool head out of the unloading station of the transfer turntable (8).

5. The automatic assembly mechanism for the blade head and handle in the production of surgical scalpels according to claim 1, characterized in that, An upper part of the cutter head clamp (12) is provided with a cutter head feeding motion module (13). A cutter head rotating seat (1) for clamping the cutter head is provided at the top of the free end of the cutter head feeding motion module (13). A cutter head direction detection camera (2) is provided above the path of the cutter head rotating seat (1). After the vertical cutter head at the top of the cutter head rotating seat (1) is detected by the cutter head direction detection camera (2), the cutter head rotating seat (1) rotates to adjust the cutter head to a fixed angle position. Then, the cutter head feeding motion module (13) moves to send the cutter head to the cutter head clamp (12).

6. The automatic assembly mechanism for the blade head and handle in the production of surgical scalpels according to claim 5, characterized in that, The cutter head rotating seat (1), the cutter head direction detection camera (2), and the cutter head feeding motion module (13) are each provided in two sets.

7. The automatic assembly mechanism for the blade head and handle in the production of surgical scalpels according to claim 1, characterized in that, The high-frequency induction heating coil (11) is mounted on the high-frequency heater, which is fixed on the same side as the three-axis motion module (3).

8. The automatic assembly mechanism for the blade head and handle in the production of surgical scalpels according to claim 1, characterized in that, The diameter of the circular cavity at the top of the handle is smaller than the diameter of the lower end of the blade.

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