Riveting machine for producing minimally invasive medical instruments

Abstract

The invention relates to the technical field of medical instrument manufacturing equipment, and discloses a riveting machine for producing minimally invasive medical instruments, the riveting machine comprises a rack, an upper die unit and a lower die unit, a workbench is arranged on the rack, a bearing panel is arranged on the workbench, the lower die unit is arranged on the bearing panel, and the lower die unit comprises a base and a lower die holder; a mounting groove is formed in the top of the base, the end of the mounting groove extends to the side wall of the base, the lower die base is inserted into the mounting groove and slides in the length direction of the mounting groove, a screwing lock rod is further arranged on the base, a downward pressing driving piece is arranged on the rack, and the upper die unit is located over the lower die base. The upper die unit comprises a mounting base and a pressing rivet head inserted into the bottom of the mounting base, the mounting base is arranged at the movable end of the bottom of the downward pressing driving part, a quick locking part is arranged on the mounting base, and the pressing rivet head is in butt joint fit with the lower die base. The riveting machine has the effect of improving the adaptability of the riveting machine.

Description

Technical Field

[0001] The present application relates to the technical field of medical device manufacturing equipment, and in particular to a riveting machine for producing minimally invasive medical devices. Background Art

[0002] Against the backdrop of continuous advancements in modern medical technology, minimally invasive medical devices, with their numerous advantages, such as minimal trauma and rapid postoperative recovery, have gradually become a key component in clinical diagnosis and treatment. They are widely used in various surgical procedures, disease detection, and other medical scenarios, significantly improving patients' treatment experience and prognosis. With the deepening of medical research and the continuous growth of clinical needs, minimally invasive medical devices have become increasingly important in the entire medical industry, and their market demand has also shown a sustained upward trend. This has not only promoted the development of medical device manufacturing technology, but also placed higher demands on the performance and adaptability of related manufacturing equipment.

[0003] In the manufacturing process of minimally invasive medical devices, the riveting process is a critical step in ensuring the secure connection of the core components of the device, and plays a decisive role in the overall quality and safety of the device. Traditionally, to achieve riveting operations, the industry generally uses riveting machines with fixed mold structures. These riveting machines are able to perform riveting tasks well when faced with devices of specific shapes and sizes. However, when it is necessary to produce medical devices of different specifications, due to the fixed nature of the mold, special molds can only be customized to adapt to new production needs. At the same time, for some devices with special shapes, conventional riveting equipment often cannot meet their unique riveting requirements, and other more complex processing methods have to be sought.

[0004] Traditional riveting machines utilize fixed mold structures, which present significant limitations. Firstly, this approach lacks flexibility and cannot adapt to the diverse shapes and sizes of minimally invasive medical devices. Changes in product model numbers require significant investment in time and cost to customize new molds, which inevitably leads to a significant decrease in production efficiency and a significant increase in manufacturing costs. Secondly, conventional equipment is often unable to rivet devices with unique shapes, which not only affects product quality and production efficiency but also hinders the innovation and development of minimally invasive medical devices. Summary of the Invention

[0005] In order to improve the riveting adaptability of a riveting machine to different minimally invasive medical device components, the present application provides a riveting machine for producing minimally invasive medical devices.

[0006] The present application provides a riveting machine for producing minimally invasive medical devices using the following technical solutions: The top of the base is provided with a mounting groove, and the end portion of the mounting groove extends to the side wall of the base, and the lower mold base is inserted into the mounting groove and slides along the length direction of the mounting groove. The base is also provided with a screw locking rod, and the screw locking rod rotates in a direction perpendicular to the mounting groove to penetrate the side wall of the base and tightly position the lower mold base on the inner side wall of the mounting groove. A downward pressing driving part is provided on the frame, and the upper mold unit is located directly above the lower mold base. The upper mold unit includes a mounting seat and a rivet head inserted into the bottom of the mounting seat, and the mounting seat is arranged on the movable end of the bottom of the downward pressing driving part. A quick locking part for fixing the rivet head is provided on the mounting seat, and the rivet head and the lower mold base are docked and matched.

[0007] By adopting the above technical solution, the minimally invasive medical device parts to be riveted are placed on the lower die base during operation, and the lower pressure drive is activated to drive the upper die unit downward, so that the rivet head and the lower die base are docked and matched to complete the riveting. If the lower die base needs to be replaced to meet different production needs, the screw lock rod can be loosened to slide it out of the mounting slot and replaced, and then the screw lock rod can be tightened to fix it; to replace the rivet head, loosen the quick lock part to pull it out from the bottom of the mounting seat and then re-secure it after replacement. The mounting slot and the screw lock rod make the lower die base removable on the base, making it easy to replace different lower die bases to adapt to parts of different shapes and sizes; the quick lock part facilitates the replacement of the rivet head, further improving adaptability; the rivet head and the lower die base dock and match to complete the riveting, effectively enhancing the riveting adaptability of the riveting machine to different minimally invasive medical device parts.

[0008] Optionally, a block for supporting the lower mold base is slidably provided in the installation groove, and a positioning frame is vertically penetrated on the block. The positioning frame includes a plurality of positioning rods vertically penetrated by the block and a connecting rod connecting the top ends of the plurality of positioning rods. The connecting rod is arranged in an I-shape and a pull ring is provided on the top. A plurality of vertical plug-in holes are arranged on the bottom wall of the installation groove along its own length direction, and a single positioning rod is vertically plugged into a single vertical plug-in hole.

[0009] By adopting the above technical solution, the position of the block in the installation groove can be flexibly adjusted, and the positioning frame can be inserted into the vertical hole to fix the block, so that it can effectively support lower die bases of different sizes and specifications, thereby improving the riveting adaptability of the riveting machine to different minimally invasive medical device components.

[0010] Optionally, the supporting panel is provided with waist-shaped grooves in parallel on both sides of its own length direction, and the waist-shaped grooves are arranged perpendicular to the mounting grooves. The workbench is connected with a fixing bolt by threaded rotation. The fixing bolt is passed through the waist-shaped groove, and a pressure head is provided at the end that passes through the top wall of the supporting panel. The pressure head presses the supporting panel tightly and fixes it on the workbench.

[0011] By adopting the above technical solution, the waist-shaped groove is used in conjunction with the fixing bolts and the pressure head to achieve flexible position adjustment and firm locking of the supporting panel on the workbench, thereby improving the riveting adaptability of the riveting machine to different minimally invasive medical device components.

[0012] Optionally, a rack is provided on the inner side wall of the waist-shaped groove along its own length direction, and an adjusting gear is rotatably provided on the workbench. The adjusting gear is located in the waist-shaped groove and is rotatably engaged with the rack. A rotating shaft is coaxially provided at the axis center of the adjusting gear, and a knob is provided at the top of the rotating shaft for easy manual adjustment.

[0013] By adopting the above technical solution, the adjustment gear can be driven to rotate by manually rotating the knob, and the position of the supporting panel on the workbench can be accurately adjusted by utilizing the meshing action of the adjustment gear and the rack, thereby improving the adaptability and positioning accuracy of the riveting machine to minimally invasive medical device components of different sizes and shapes.

[0014] Optionally, a guide key is provided on the side wall of the rotating shaft along its own axial direction, and a guide groove is provided on the inner ring side wall of the adjusting gear corresponding to the guide key, and the guide key and the guide groove are slidably fitted together. A plug-in groove is coaxially provided on the bottom of the inner ring of the adjusting gear, and a spline groove is provided on the workbench to connect the plug-in groove. A positioning spline is plugged into the spline groove, and the positioning spline is sleeved on the bottom end of the rotating shaft. The size of the plug-in groove is larger than the positioning spline.

[0015] By adopting the above technical solution, the position of the adjustment gear can be flexibly adjusted to adapt to different situations, ensuring that the adjustment gear can rotate normally to realize the adjustment function. At the same time, it can avoid accidental rotation of the adjustment gear in the non-adjustment state, thereby improving the stability of the device and the accuracy of operation.

[0016] Optionally, the top ring of the positioning spline is provided with a plurality of snap-in balls made of flexible material, and the inner top wall of the plug-in slot is provided with a snap-in slot corresponding to each snap-in ball, and the snap-in balls correspond to the snap-in slots one by one and are snap-fitted.

[0017] By adopting the above technical solution, when the position of the supporting panel needs to be adjusted, the adjustment gear is first pulled upward to disengage the positioning spline from the spline groove, and the guide key slides in the guide groove until the flexible material snap-in ball corresponds to the snap-in groove and snaps in place, thereby positioning the adjustment gear. Subsequently, the knob is turned to rotate the adjustment gear, which engages with the rack on the inner wall of the kidney-shaped groove, allowing the supporting panel to move along the length of the kidney-shaped groove. After adjusting to the appropriate position, the adjustment gear is pressed downward to insert the positioning spline into the spline groove, fixing the supporting panel in that position. In this way, the snap-in fit between the snap-in ball and the snap-in groove facilitates the subsequent adjustment of the supporting panel position by turning the knob, reducing the impact of the positioning spline falling due to its own weight on the subsequent adjustment of the supporting panel position.

[0018] Optionally, the workbench is provided with scale marks along the length direction of the waist-shaped groove, and the scale marks are arranged in contact with the side wall of the supporting panel.

[0019] By adopting the above technical solution, the adjustment position and adjustment amount of the supporting panel can be intuitively and accurately grasped, thereby improving the accuracy and efficiency of the support panel position adjustment.

[0020] Optionally, a wedge-shaped slot is vertically provided on the side wall of the base at the end of the mounting groove, and one wedge-shaped slot is provided on both sides of the mounting groove, and the top of the wedge-shaped slot extends to the top wall of the base, and a wedge-shaped strip is inserted into the wedge-shaped slot, and one end of the two wedge-shaped strips extending out of the side wall of the base is commonly connected to a connecting plate, and an adjusting screw is passed through the connecting plate by threaded rotation, and the adjusting screw is arranged parallel to the length direction of the mounting groove, and a rubber sleeve is provided on the end of the adjusting screw facing the mounting groove, and the rubber sleeve abuts against the side wall of the lower mold base to push the lower mold base to move.

[0021] By adopting this technical solution, when assembling the lower die base, the wedge strip is inserted into the wedge-shaped slot in the base side wall to properly position the connecting plate. While using a feeler gauge to test the tightness of the rivet head against the inner wall of the lower die base slot, turning the adjustment screw allows the lower die base to be continuously adjusted along its length within the installation slot until it is properly mated with the rivet head. This facilitates adjustment of the lower die base position to suit different riveting requirements, improving the riveting accuracy of the riveting machine for different minimally invasive medical device components.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. During operation, place the minimally invasive medical device parts that need to be riveted on the lower die base, start the lower pressure drive to drive the upper die unit downward, and make the rivet head dock with the lower die base to complete the riveting. If you want to replace the lower die base to meet different production needs, you can loosen the screw lock rod to slide it out of the mounting slot and replace it, and then tighten the screw lock rod to fix it; when replacing the rivet head, loosen the quick lock part to pull it out from the bottom of the mounting seat and re-fix it after replacement. The mounting slot and the screw lock rod make the lower die base detachable on the base, which is convenient for replacing different lower die bases to adapt to parts of different shapes and sizes; the quick lock part facilitates the replacement of the rivet head, further improving the adaptability; the rivet head docks with the lower die base to complete the riveting, which effectively enhances the adaptability of the riveting machine to the riveting of different minimally invasive medical device parts; 2. The position of the retaining block in the mounting slot can be flexibly adjusted, and the retaining block can be fixed by inserting a positioning frame into the vertical hole, thereby effectively supporting lower die holders of different sizes and specifications, improving the riveting adaptability of the riveting machine to different minimally invasive medical device components; 3. By utilizing the cooperation between the waist-shaped groove, the fixing bolts and the pressure head, the flexible position adjustment and firm locking of the supporting panel on the workbench can be achieved, thereby improving the riveting adaptability of the riveting machine to different minimally invasive medical device components. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0024] Figure 2 It is a cross-sectional view showing the connection relationship between the mounting base and the rivet head in the embodiment of the present application.

[0025] Figure 3 It is a schematic diagram showing the connection relationship between the base and the lower mold base in the embodiment of the present application.

[0026] Figure 4 It is a cross-sectional view showing the positional relationship among the fixing bolts, the pressure head, the supporting panel and the workbench in the embodiment of the present application.

[0027] Figure 5 It is an exploded view showing the connection relationship between the stop block, the positioning frame and the base in the embodiment of the present application.

[0028] Description of reference numerals: 1. Frame; 11. Press drive; 2. Upper die unit; 21. Mounting base; 22. Rivet head; 23. Quick lock; 3. Lower die unit; 31. Base; 311. Mounting slot; 3111. Vertical insertion hole; 312. Screw-on locking rod; 313. Wedge-shaped slot; 32. Lower die base; 4. Workbench; 41. Fixing bolt; 411. Press head; 42. Spline groove; 43. Scale mark; 5. Support panel; 51. Waist-shaped groove; 511. Rack; 6. Adjusting gear; 61. Guide groove; 62. Inserting groove; 621. Snap-fitting groove; 7. Rotating shaft; 71. Knob; 72. Guide key; 73. Positioning spline; 731. Snap-fitting ball; 8. Wedge-shaped strip; 81. Connecting plate; 82. Adjusting screw; 821. Rubber sleeve; 9. Stop block; 91. Positioning frame; 911. Positioning plug; 912. Connecting rod; 913. Pull ring. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-Figure 5 This application is described in further detail.

[0030] The embodiments of the present application disclose a riveting machine for producing minimally invasive medical devices.

[0031] Reference Figure 1 A riveting machine for producing minimally invasive medical devices includes a frame 1, an upper mold unit 2, and a lower mold unit 3. A workbench 4 is fixedly mounted on the frame 1, a support panel 5 is provided on the workbench 4, and the lower mold unit 3 is assembled on the support panel 5. A downward pressure driving member 11 is provided on the top of the frame 1. In this embodiment, the downward pressure driving member 11 is a hydraulic cylinder. The cylinder body of the hydraulic cylinder is fixedly mounted on the top of the frame 1, and its piston rod slides vertically through the frame 1 and extends to the top of the lower mold unit 3. The upper mold unit 2 is assembled on the end of the piston rod of the hydraulic cylinder. When the piston rod of the hydraulic cylinder is extended, it drives the upper mold unit 2 to move, so that the upper mold unit 2 and the lower mold unit 3 are docked and matched to complete the riveting.

[0032] Reference Figure 1 and Figure 2The upper die unit 2 includes a mounting base 21 and a rivet head 22. The mounting base 21 is coaxially fixed on the end of the piston rod of the hydraulic cylinder and is usually made of high-strength alloy steel to withstand the pressure transmitted by the hydraulic cylinder. The rivet head 22 is coaxially plugged into the bottom of the mounting base 21. Its material is generally die steel with good hardness and toughness. A quick lock 23 is provided on the mounting base 21. The quick lock 23 can be a snap-on structure, a bolt-fastened structure, or a pin-through structure. The quick lock 23 in this embodiment adopts a pin-through structure, which is a pin that passes through the mounting base 21 and the rivet head 22. The pin is perpendicular to the plug-in direction between the mounting base 21 and the rivet head 22, and passes through the jack where the mounting base 21 and the rivet head 22 are connected, and the end is locked by a nut. The rivet head 22 can be replaced quickly and conveniently to meet different riveting requirements.

[0033] Reference Figure 1 and Figure 3 The lower die unit 3 includes a base 31 and a lower die holder 32. The base 31 is bolted to the center of the support panel 5. A mounting slot 311 is defined at the top of the base 31. In this embodiment, the mounting slot 311 has a T-shaped cross-section, with the end of the mounting slot 311 extending to the sidewall of the base 31. The base 31 is typically made of a material such as cast iron, which offers high wear resistance and stability. The lower die holder 32 is configured to match the size of the rivet head 22 and is inserted into the mounting slot 311 from its opening. It then slides along the length of the mounting slot 311.

[0034] Reference Figure 3 The base 31 is also provided with a screw lock rod 312, which rotates in a direction perpendicular to the mounting groove 311 to penetrate the side wall of the base 31. When the screw lock rod 312 rotates, the end of the screw lock rod 312 facing the mounting groove 311 can press the lower mold base 32 against the inner side wall of the mounting groove 311, thereby fixing the lower mold base 32.

[0035] Reference Figure 3 and Figure 4 To allow longitudinal adjustment of the lower die base 32 during assembly to improve the docking accuracy between the rivet head 22 and the lower die base 32, the support panel 5 is provided with waist-shaped grooves 51 on both sides of its length, perpendicular to the mounting grooves 311. A fixing bolt 41 is threadedly connected to the workbench 4. The fixing bolt 41 passes through the waist-shaped groove 51, and a pressing head 411 is fixed to the end that protrudes from the top wall of the support panel 5. When the fixing bolt 41 is tightened, the pressing head 411 can firmly secure the support panel 5 to the workbench 4, ensuring the stability of the support panel 5 during operation.

[0036] Reference Figure 3 and Figure 4A rack 511 is fixedly mounted on the inner sidewall of the kidney-shaped groove 51 along its length. An adjustment gear 6 is rotatably connected to the workbench 4 via a bearing. The adjustment gear 6 is located within the kidney-shaped groove 51 and is rotatably engaged with the rack 511. A rotating shaft 7 is coaxially mounted at the axis of the adjustment gear 6, and a knob 71 is fixedly mounted on the top of the rotating shaft 7. The adjustment gear 6 is rotated by manually rotating the knob 71, and the position of the support panel 5 on the workbench 4 is precisely adjusted by the meshing action of the adjustment gear 6 and the rack 511, thereby improving the adaptability and positioning accuracy of the riveting machine for minimally invasive medical device components of different sizes and shapes.

[0037] Reference Figure 4 To achieve initial fixation of the support panel 5 by tightening the fixing bolts 41, a guide key 72 is fixedly mounted along the sidewall of the rotating shaft 7 along its axial direction. A guide slot 61 is defined on the inner sidewall of the adjusting gear 6, corresponding to the guide key 72. The guide key 72 and the guide slot 61 slide in contact. A coaxial insertion slot 62 is defined on the bottom of the inner ring of the adjusting gear 6. A spline slot 42 is defined on the workbench 4, connecting to and mating with the insertion slot 62. A positioning spline 73 is inserted into the spline slot 42. The positioning spline 73 is sleeved onto the bottom end of the rotating shaft 7. The insertion slot 62 is larger than the positioning spline 73. The top fixing ring of the positioning spline 73 is equipped with several flexible snap-in balls 731. The inner top wall of the insertion slot 62 defines a snap-in groove 621 corresponding to each snap-in ball 731. The snap-in balls 731 correspond to and snap-in with the snap-in grooves 621. The snap-in balls 731 can be made of a flexible material such as rubber, which exhibits a certain degree of elasticity.

[0038] Reference Figure 3 and Figure 4 When the position of the supporting panel 5 needs to be adjusted, the adjusting gear 6 is first pulled upward to disengage the positioning spline 73 from the spline groove 42, and the guide key 72 slides in the guide groove 61 until the flexible material snap-in ball 731 corresponds to and engages with the snap-in groove 621, thereby positioning the rotating shaft 7. Subsequently, the knob 71 is turned to rotate the adjusting gear 6, which engages with the rack 511 on the inner wall of the kidney-shaped groove 51, allowing the supporting panel 5 to move along the length of the kidney-shaped groove 51. After adjusting to the appropriate position, the adjusting gear 6 is pressed downward to insert the positioning spline 73 into the spline groove 42, fixing the supporting panel 5 in this position. In this way, the snap-in engagement of the snap-in ball 731 and the snap-in groove 621 facilitates the subsequent rotation of the knob 71 to adjust the position of the supporting panel 5, and reduces the influence of the positioning spline 73 falling due to its own weight on the subsequent adjustment of the position of the supporting panel 5.

[0039] Reference Figure 1 and Figure 3 In order to improve the accuracy of position adjustment of the supporting panel 5 , a scale mark 43 is electroplated on the workbench 4 along the length direction of the waist-shaped groove 51 , and the scale mark 43 is set in contact with the side wall of the supporting panel 5 .

[0040] Reference Figure 3 To allow for transverse adjustment of the lower die base 32 during assembly to improve the docking accuracy between the rivet head 22 and the lower die base 32, a wedge-shaped slot 313 is vertically defined on the sidewall of the base 31 at the end of the mounting slot 311. Two wedge-shaped slots 313 are located on either side of the mounting slot 311, with their tops extending to the top wall of the base 31. Wedge-shaped bars 8 are inserted into the wedge-shaped slots 313. Two wedge-shaped bars 8 extend beyond the sidewalls of the base 31 and are secured to a connecting plate 81. An adjustment screw 82 is threadedly threaded through the connecting plate 81. The adjustment screw 82 is arranged parallel to the length of the mounting slot 311, and a rubber sleeve 821 is sleeved on the end of the adjustment screw 82 facing the mounting slot 311. The rubber sleeve 821 abuts against the sidewall of the lower die base 32 to push the lower die base 32 to move.

[0041] Reference Figure 3 When the position of the lower die base 32 needs to be adjusted laterally, the wedge strip 8 is inserted into the wedge-shaped slot 313 in the side wall of the base 31 to properly position the connecting plate 81. During operation, rotating the adjusting screw 82 allows the lower die base 32 to be continuously adjusted in the length direction within the mounting slot 311. During this process, a feeler gauge is often used to assist in testing the fit of the rivet head 22 against the inner sidewall of the slot in the lower die base 32 until the lower die base 32 and the rivet head 22 are properly engaged.

[0042] Reference Figure 3 and Figure 5 A stopper 9 is slidably provided in the mounting groove 311 on the side facing away from the connecting plate 81. The stopper 9 is used to support the other side of the lower die base 32, so that the two sides of the lower die base 32 can be clamped before the locking rod 312 is subsequently screwed to lock the lower die base 32, thereby achieving preliminary fixation of the position. The stopper 9 can be made of materials such as copper alloy, which has good wear resistance and self-lubricating properties. A positioning frame 91 is vertically penetrated on the stopper 9. The positioning frame 91 includes a positioning rod 911 and a connecting rod 912. There are several positioning rods 911 distributed on the stopper 9. In this embodiment, four are taken as an example. The four positioning rods 911 are distributed in a matrix. A plurality of plug-in vertical holes 3111 are arranged on the bottom wall of the mounting groove 311 along its own length direction. A single positioning rod 911 is vertically plugged into a single plug-in vertical hole 3111. Each positioning rod 911 is vertically penetrated by the stopper 9 and plugged into the plug-in vertical hole 3111. The connecting rod 912 is arranged in an I-shape, located above the stop block 9, and is connected to the top ends of the four positioning rods 911. A pull ring 913 is also fixed on the top to facilitate the operator to lift the positioning frame 91.

[0043] The implementation principle of a riveting machine for producing minimally invasive medical devices in an embodiment of the present application is as follows: before assembling the minimally invasive medical device, according to the model of the minimally invasive medical device, first insert the rivet head 22 of the adapted model into the bottom of the mounting seat 21, and pass through and fix the mounting seat 21 and the jack of the rivet head 22 through a pin rod.

[0044] Secondly, insert the lower die base 32 of the matching rivet head 22 model into the installation groove 311 from the opening of the installation groove 311, and then make a preliminary longitudinal adjustment to the lower die base 32 at this time. The longitudinal adjustment of the lower die base 32 is the adjustment of the position of the supporting panel 5. In this process, first pull up the adjustment gear 6 to disengage the positioning spline 73 from the spline groove 42, and the guide key 72 slides in the guide groove 61 until the snap-on ball 731 of the flexible material corresponds to the snap-on groove 621 one by one and snaps into place, thereby positioning the rotating shaft 7. Then turn the knob 71 to drive the adjustment gear 6 to rotate, and the adjustment gear 6 engages with the rack 511 on the inner wall of the kidney-shaped groove 51, allowing the supporting panel 5 to move along the length direction of the kidney-shaped groove 51; after adjusting to the appropriate position according to the scale mark 43, press the adjustment gear 6 downward to insert the positioning spline 73 into the spline groove 42, fixing the supporting panel 5 in this position.

[0045] Then, use the existing feeler gauge to assist in testing the fit between the rivet head 22 and the inner side wall of the slot of the lower die base 32 when pressing down, and accurately adjust the lateral position of the lower die base 32. Before lateral adjustment, insert the wedge strip 8 into the wedge-shaped slot 313 on the side wall of the base 31 to place the connecting plate 81 in the appropriate position. Then, rotate the adjusting screw 82 to push the lower die base 32 in the mounting groove 311 for stepless adjustment along the length direction. When adjusted to the appropriate position, slide the block 9 into the mounting groove 311 from the other side until it abuts the side wall of the lower die base 32. Manually insert the positioning bracket 91 to lock the block 9 in the current position, clamping the two sides of the lower die base 32 to achieve preliminary fixation of the position. Finally, screw the locking rod 312 to lock the lower die base 32. Subsequent riveting operations can then be carried out.

[0046] The replaceable lower die base 32 and rivet head 22 can adapt to minimally invasive medical device parts of different shapes and sizes, reducing the time and cost of customizing new molds due to changes in product models and improving production efficiency.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A riveting machine for producing minimally invasive medical devices, characterized in that , comprising a frame (1), an upper mold unit (2) and a lower mold unit (3), wherein a workbench (4) is provided on the frame (1), a supporting panel (5) is provided on the workbench (4), the lower mold unit (3) is provided on the supporting panel (5), the lower mold unit (3) comprises a base (31) and a lower mold base (32) detachably provided on the base (31), a mounting groove (311) is provided on the top of the base (31), and the end of the mounting groove (311) extends to the side wall of the base (31), the lower mold base (32) is inserted into the mounting groove (311) and slides along the length direction of the mounting groove (311), and a screw lock rod (312) is also provided on the base (31). The screw lock rod (312) rotates in a direction perpendicular to the mounting groove (311) to penetrate the side wall of the base (31), and positions the lower die base (32) against the inner side wall of the mounting groove (311). The frame (1) is provided with a downward pressing driving member (11). The upper die unit (2) is located directly above the lower die base (32). The upper die unit (2) includes a mounting seat (21) and a rivet head (22) plugged into the bottom of the mounting seat (21). The mounting seat (21) is provided on the movable end of the bottom of the downward pressing driving member (11). The mounting seat (21) is provided with a quick lock member (23) for fixing the rivet head (22). The rivet head (22) and the lower die base (32) are butt-jointed.

2. A riveting machine for producing minimally invasive medical devices according to claim 1, characterized in that A block (9) for supporting the lower mold base (32) is slidably provided in the installation groove (311), and a positioning frame (91) is vertically penetrated on the block (9). The positioning frame (91) includes a plurality of positioning rods (911) vertically penetrated through the block (9) and a connecting rod (912) commonly connected to the top of the plurality of positioning rods (911). The connecting rod (912) is arranged in an I-shape and a pull ring (913) is provided on the top. A plurality of plug-in vertical holes (3111) are arranged on the bottom wall of the installation groove (311) along its own length direction, and a single positioning rod (911) is vertically plugged into a single plug-in vertical hole (3111).

3. The riveting machine for producing minimally invasive medical devices according to claim 1, characterized in that The supporting panel (5) is provided with waist-shaped grooves (51) on both sides of its own length direction in parallel. The waist-shaped grooves (51) are arranged perpendicular to the mounting grooves (311). The workbench (4) is connected to a fixing bolt (41) by screw thread rotation. The fixing bolt (41) is passed through the waist-shaped grooves (51) and a pressure head (411) is provided at the end thereof passing through the top wall of the supporting panel (5). The pressure head (411) presses the supporting panel (5) against the workbench (4).

4. A riveting machine for producing minimally invasive medical devices according to claim 3, characterized in that A rack (511) is provided on the inner side wall of the waist-shaped groove (51) along its own length direction, and an adjusting gear (6) is rotatably provided on the workbench (4). The adjusting gear (6) is located in the waist-shaped groove (51) and is rotatably engaged with the rack (511). A rotating shaft (7) is coaxially provided at the axis center of the adjusting gear (6), and a knob (71) is provided at the top end of the rotating shaft (7) for facilitating manual adjustment.

5. The riveting machine for producing minimally invasive medical devices according to claim 4, characterized in that A guide key (72) is provided on the side wall of the rotating shaft (7) along its own axial direction, and a guide groove (61) is provided on the inner ring side wall of the adjusting gear (6) corresponding to the guide key (72). The guide key (72) and the guide groove (61) are slidably matched. A plug-in groove (62) is coaxially provided on the bottom of the inner ring of the adjusting gear (6). A spline groove (42) is provided on the workbench (4) to connect with the plug-in groove (62). A positioning spline (73) is inserted into the spline groove (42). The positioning spline (73) is sleeved on the bottom end of the rotating shaft (7). The size of the plug-in groove (62) is larger than the positioning spline (73).

6. The riveting machine for producing minimally invasive medical devices according to claim 5, characterized in that The top ring of the positioning spline (73) is provided with a plurality of snap-in balls (731) made of flexible material, and the inner top wall of the plug-in slot (62) is provided with a snap-in slot (621) corresponding to each snap-in ball (731), and the snap-in balls (731) correspond to the snap-in slots (621) one by one and are snap-fitted.

7. The riveting machine for producing minimally invasive medical devices according to claim 3, characterized in that The workbench (4) is provided with a scale mark (43) along the length direction of the waist-shaped groove (51), and the scale mark (43) is arranged in contact with the side wall of the supporting panel (5).

8. The riveting machine for producing minimally invasive medical devices according to claim 1, characterized in that: The side wall of the base (31) located at the end of the mounting groove (311) is vertically provided with a wedge-shaped slot (313), and the wedge-shaped slot (313) is provided with one on both sides of the mounting groove (311). The top of the wedge-shaped slot (313) extends to the top wall of the base (31), and a wedge-shaped strip (8) is inserted into the wedge-shaped slot (313). One end of the two wedge-shaped strips (8) extending out of the side wall of the base (31) is commonly connected to a connecting plate (81), and an adjusting screw (82) is threadedly passed through the connecting plate (81), and the adjusting screw (82) is arranged parallel to the length direction of the mounting groove (311), and a rubber sleeve (821) is sleeved on the end of the adjusting screw (82) facing the mounting groove (311), and the rubber sleeve (821) abuts against the side wall of the lower mold base (32) to push the lower mold base (32) to move.

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