High-precision riveting device
By designing a high-precision riveting device driven by motor, screw and slider assembly, combined with grating scale and proximity switch sensor, the problem of poor accuracy of existing medical universal nail riveting devices is solved, significantly improving the accuracy and yield of riveting.
Patent Information
- Application Number
- CN202421482819.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The riveting device of existing medical universal nails has poor riveting effect and yield due to the poor accuracy of the cylinder movement position.
A high-precision riveting device is designed, using motor, screw and slider assembly to drive the slide seat and punch needle for riveting, and improve riveting accuracy and safety through grating scales and proximity switch sensors.
Through the driving method of motors, screws and sliders, the accuracy and yield of riveting are improved, and the use of grating scales and sensors further enhance the accuracy and safety of riveting.
Smart Images
Figure CN222778792U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of parts riveting, and more specifically relates to a high-precision riveting device. Background Art
[0002] Medical universal nail is an important orthopedic surgical tool, widely used in the fixation and stabilization of the spine and other bones. Its design and material selection ensure its high efficiency and safety in clinical practice. Universal nail usually consists of two parts: a pin with a thread and a nut with a corresponding thread.
[0003] In the prior art, a cylinder is generally used to rivet a threaded pin and a nut with a corresponding thread together. Due to the poor movement position accuracy of the cylinder, the movement position accuracy will deteriorate after long-term use of the cylinder, which will affect the riveting effect of the bracket and the yield after riveting. Utility Model Content
[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a high-precision riveting device, which has the advantages of improving riveting accuracy and improving product qualification rate.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A high-precision riveting device includes a base plate, a fixed seat for placing a universal nail in the middle of the base plate, guide rails are provided at both ends of the fixed seat, sliding seats are slidably mounted on the two guide rails, and punches are installed on the side walls of the sliding seat. The two punches are arranged toward the fixed seat, and the punches extend into the punch holes on the side walls of the fixed seat. A driving mechanism for driving the sliding seat and the punches to move is installed on the lower surface of the base plate, and the driving mechanism includes a motor, a screw rod, and a slider assembly.
[0007] The advantages of this solution are at least that the motor, screw and slider assembly have higher precision relative to the moving position of the cylinder. When the product needs to be riveted, the motor is started, the motor drives the screw to rotate and drives the slider and sliding seat threaded on the screw to move on the guide rail, and the punch performs punch rivet on the product in the fixed seat. The driving method of the motor, screw and slider makes the riveting effect better, improves the precision of product riveting, and thus improves the riveting yield of the product.
[0008] The utility model is further configured as follows: the motor, screw rod and slider assembly are each configured as two groups, the two motors are mounted on the lower surface of the base plate, two groups of vertical plates are mounted on the bottom surface of the base plate, the screw rod is rotatably mounted on the vertical plate, the output end of the motor is fixedly connected to the screw rod through a coupling, one end of the two sliders is fixedly connected to the sliding seat, and the other end is threadedly connected to the screw rod.
[0009] The utility model is further configured as follows: a grating ruler is installed beside the sliding seat and on the base plate, and a grating reading head on the grating ruler is fixed to the side wall of the sliding seat.
[0010] The advantages of this solution are at least that the grating ruler can achieve precise control of the displacement of the sliding seat and the punch needle, and the grating ruler is used in conjunction with the motor, the lead screw and the slider to greatly improve the riveting accuracy.
[0011] The utility model is further configured as follows: two mounting seats are installed on the side of the substrate away from the grating ruler, and a plurality of proximity switch sensors are installed on both mounting seats. The proximity switch sensors are divided into a first proximity switch, a second proximity switch and a third proximity switch.
[0012] The advantages of this solution are at least that the provision of the first proximity switch and the second proximity switch facilitates the detection of the limit position of the sliding seat, while the provision of the third proximity switch facilitates the detection of the starting point of the sliding seat, thereby improving the movement accuracy of the sliding seat.
[0013] The utility model is further configured as follows: needle detection sensors for detecting whether the punching needle is broken are installed on the left and right sides of the fixing seat.
[0014] The advantages of this solution are at least that the needle detection sensor is convenient for detecting whether the punch needle is broken during operation, thereby avoiding the phenomenon of continuing production after the punch needle is broken, and improving the riveting yield of the product.
[0015] The utility model is further configured as follows: the proximity switch sensor, the grating ruler and the needle detection sensor are electrically connected to the motor through wires and a controller.
[0016] In summary, the utility model has at least the following advantages:
[0017] 1. By setting a fixed seat, a sliding seat, a punch and a driving mechanism, when the product needs to be riveted, the motor is started, the motor drives the screw to rotate, and drives the slider and the sliding seat threaded on the screw to move on the guide rail, and the punch performs punching and riveting on the product in the fixed seat. The driving mode of the motor, the screw and the slider makes the riveting effect better, improves the product riveting accuracy, and thus improves the product riveting yield;
[0018] 2. By setting the grating ruler, the grating ruler can realize the precise control of the displacement of the sliding seat and the punch needle. The grating ruler cooperates with the motor, the screw rod and the slider to greatly improve the riveting accuracy;
[0019] 3. By setting the proximity switch sensor, the setting of the first proximity switch and the second proximity switch is convenient for detecting the limit position of the sliding seat, and the setting of the third proximity switch is convenient for detecting the starting origin of the sliding seat, thereby improving the accuracy of the movement of the sliding seat. By setting the needle detection sensor, it is convenient to detect whether the punch needle is broken during work, thereby avoiding the phenomenon of continuing production after the punch needle is broken, and improving the riveting yield of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is an overall schematic diagram of this embodiment;
[0021] Figure 2 This is an exploded schematic diagram of this embodiment;
[0022] Figure 3 for Figure 2 A magnified schematic diagram of part A;
[0023] Figure 4 for Figure 2 Schematic diagram of the enlarged portion B.
[0024] Figure numerals: 1, substrate; 101, mounting seat; 2, fixing seat; 3, guide rail; 4, sliding seat; 5, punching needle; 6, driving mechanism; 601, motor; 602, screw rod; 603, slider; 7, vertical plate; 8, grating scale; 9, proximity switch sensor; 901, first proximity switch; 902, second proximity switch; 903, third proximity switch; 10, needle detection sensor. DETAILED DESCRIPTION
[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0026] A high-precision riveting device, such as Figure 1 , Figure 2 As shown (refer to Figure 3 ), including a base plate 1, a fixing seat 2 for placing a universal pin in the middle of the base plate 1, guide rails 3 are provided at both ends of the fixing seat 2, sliding seats 4 are slidably installed on the two guide rails 3, and punches 5 are installed on the side walls of the sliding seat 4. The two punches 5 are arranged toward the fixing seat 2, and the punches 5 extend into the punch holes on the side walls of the fixing seat 2. A driving mechanism 6 for driving the sliding seat 4 and the punches 5 to move is installed on the lower surface of the base plate 1.
[0027] Furthermore, in order to improve the riveting accuracy of the product, in some embodiments, the driving mechanism 6 includes a motor 601, a screw rod 602, and a slider 603 assembly. The motor 601, the screw rod 602 and the slider 603 assembly are each set to two groups. The two motors 601 are installed on the lower surface of the substrate 1, and two groups of vertical plates 7 are installed on the bottom surface of the substrate 1. The screw rod 602 is rotatably installed on the vertical plate 7. The output end of the motor 601 is fixedly connected to the screw rod 602 through a coupling, one end of the two sliders 603 is fixedly connected to the sliding seat 4, and the other end is threadedly connected to the screw rod 602. The driving mode of the motor 601, the screw rod 602 and the slider 603 is adopted to achieve a better riveting effect, improve the riveting accuracy of the product, and thus improve the riveting yield of the product.
[0028] like Figure 2 As shown, in some embodiments, in order to accurately control the displacement of the sliding seat 4 and the punch 5, a grating ruler 8 is installed next to the sliding seat 4 and on the substrate 1. The grating reading head on the grating ruler 8 is fixed to the side wall of the sliding seat 4. The grating ruler 8 is combined with the motor 601, the screw 602 and the slider 603 to greatly improve the riveting accuracy.
[0029] Two mounting seats 101 are installed on the side of the substrate 1 away from the grating ruler 8, and a number of proximity switch sensors 9 are installed on the two mounting seats 101. The proximity switch sensors 9 are divided into a first proximity switch 901, a second proximity switch 902 and a third proximity switch 903. The setting of the first proximity switch 901 and the second proximity switch 902 facilitates the detection of the extreme position of the sliding seat 4, and the setting of the third proximity switch 903 facilitates the detection of the starting origin of the sliding seat 4.
[0030] like Figure 4 As shown, in order to facilitate the detection of whether the punch needle 5 is broken during operation, in some embodiments, needle detection sensors 10 for detecting whether the punch needle 5 is broken are installed on the left and right sides of the fixed seat 2. The needle detection sensor 10 avoids the phenomenon of continuing production after the punch needle 5 is broken. The proximity switch sensor 9, the grating scale 8 and the needle detection sensor 10 are electrically connected to the motor 601 through wires and the controller. The grating scale 8, the proximity switch sensor 9 and the needle detection sensor 10 are all prior arts and will not be described here.
[0031] The working process and beneficial effects of the utility model are as follows:
[0032] When it is necessary to rivet the product, the motor 601 is started, and the motor 601 drives the screw 602 to rotate and drives the slider 603 and the sliding seat 4 threaded on the screw 602 to move on the guide rail 3. Under the action of the grating scale 8, the displacement of the sliding seat 4 and the punch 5 is more precise, and the punch 5 performs stamping and riveting on the product in the fixed seat 2. The grating scale 8 cooperates with the motor 601, the screw 602 and the slider 603 to greatly improve the riveting accuracy, thereby improving the riveting yield of the product.
[0033] By setting the proximity switch sensor 9, the setting of the first proximity switch 901 and the second proximity switch 902 facilitates the detection of the extreme position of the sliding seat 4, and the setting of the third proximity switch 903 facilitates the detection of the starting origin of the sliding seat 4, thereby improving the movement accuracy of the sliding seat 4. By setting the needle detection sensor 10, it is convenient to detect whether the punch needle 5 is broken during operation, thereby avoiding the phenomenon of continuing production after the punch needle 5 is broken, and improving the riveting yield of the product.
[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.
Claims
1. A high-precision riveting device, characterized in that: The invention comprises a base plate (1), wherein a fixing seat (2) for receiving a universal pin is provided in the middle of the base plate (1), guide rails (3) are provided at both ends of the fixing seat (2), a sliding seat (4) is slidably mounted on the two guide rails (3), a punching needle (5) is mounted on the side wall of the sliding seat (4), the two punching needles (5) are arranged toward the fixing seat (2), and the punching needles (5) extend into the punching needle (5) holes on the side wall of the fixing seat (2), and a driving mechanism (6) for driving the sliding seat (4) and the punching needle (5) to move is installed on the lower surface of the base plate (1), and the driving mechanism (6) comprises a motor (601), a screw rod (602), and a slider (603) assembly.
2. The high-precision riveting device according to claim 1, characterized in that: The motor (601), screw rod (602) and slider (603) components are each provided in two groups, the two motors (601) are mounted on the lower surface of the base plate (1), two groups of vertical plates (7) are mounted on the bottom surface of the base plate (1), the screw rod (602) is rotatably mounted on the vertical plates (7), the output end of the motor (601) is fixedly connected to the screw rod (602) via a coupling, one end of the two sliders (603) is fixedly connected to the sliding seat (4), and the other end is threadedly connected to the screw rod (602).
3. The high-precision riveting device according to claim 2, characterized in that: A grating ruler (8) is installed beside the sliding seat (4) and on the base plate (1), and a grating reading head on the grating ruler (8) is fixed to the side wall of the sliding seat (4).
4. The high-precision riveting device according to claim 3, characterized in that: Two mounting seats (101) are mounted on a side of the substrate (1) away from the grating ruler (8), and a plurality of proximity switch sensors (9) are mounted on both mounting seats. The proximity switch sensors (9) are divided into a first proximity switch (901), a second proximity switch (902), and a third proximity switch (903).
5. The high-precision riveting device according to claim 4, characterized in that: Needle detection sensors (10) for detecting whether the punch needle (5) is broken are installed on the left and right sides of the fixing seat (2).
6. The high-precision riveting device according to claim 5, characterized in that: The proximity switch sensor (9), the grating ruler (8) and the needle detection sensor (10) are electrically connected to the motor (601) via electric wires and a controller.