An automatic roll-type marking machine for electrochemical corrosion marking

Abstract

An automatic rolling type marking machine for electrochemical corrosion marking comprises a marking pool, a marking graphite negative electrode, a marking template, a marking positive electrode, the marking graphite negative electrode is placed in the marking pool, the upper end of the marking graphite negative electrode is covered with a marking conductive carbon felt, and the marking template is covered on the upper end of the marking conductive carbon felt; the marking positive electrode can move up and down through the driving of a positive electrode lifting system, when marking, a fine wire pipe marking body is placed above the marking template, the marking positive electrode is pressed on the upper end of the fine wire pipe marking body and moves relatively in the radial direction with the fine wire pipe marking body, under the action of the friction of the marking positive electrode, the fine wire pipe marking body rolls in the circumferential direction by 360 DEG, so as to corrode different width black marks on the outer surface of the fine wire pipe marking body in the circumferential direction. The marking element is pushed to roll by mechanical power, the marking operation in the circumferential direction of the small diameter medical instrument fine wire pipe is realized, the present application has high automation degree, stable quality and high production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of packaging labels and marking, and specifically relates to an automatic rolling marking machine for 360-degree circumference electrochemical corrosion marking of thin filament tubes for medical devices. Background Technology

[0002] Currently, marking circular stripes on stainless steel capillary tubes and guide wires is done manually. The marking requirements for stainless steel capillary tubes and guide wires are to etch black marks around the tube or guide wire (i.e., 360 degrees) at different intervals along the axial direction and according to different required widths. The main purpose of this invention is to change the manual operation to automated operation by equipment.

[0003] Patent application number 202211197231.7 discloses "An Automatic Loading and Unloading Marking Device for Graphite Bipolar Plates." This device includes a cabinet, a scanning mechanism, and a marking mechanism. The cabinet has a loading bin and a unloading bin at each end. A transmission mechanism is located above the loading bin, and a lifting mechanism is located between the transmission mechanism and the unloading bin. A dropping mechanism is located at the tail end of the lifting mechanism. The transmission mechanism includes a feeding component, a transfer component, and a guiding component. The lifting mechanism includes a carrying component and a limiting component. The feeding component moves the graphite bipolar plate at the top of the loading bin to the transfer component. The transfer component moves the graphite bipolar plate to the carrying component, and during this movement, it works with the guiding component to raise and lower the carrying component. The lowering of the carrying component causes the limiting component to rise and limit the graphite bipolar plate. The dropping mechanism transfers the marked graphite bipolar plate to the unloading bin. This invention can achieve automatic marking and solves the problems of existing equipment where robotic arms cannot effectively load materials, resulting in poor adhesion and drops, while manual loading and unloading is time-consuming, labor-intensive, inefficient, and lacks precise positioning. However, the equipment cannot perform circumferential marking on thin wire fittings. Summary of the Invention

[0004] This invention provides an automatic rolling marking machine for electrochemical corrosion marking. The marking element is driven by mechanical power to roll, realizing the marking operation in the circumferential direction of small-diameter medical device filaments. This invention has a high degree of automation, stable quality, and high production efficiency.

[0005] To achieve the above objectives, the present invention employs the following technical solution: An automatic rolling marking machine for electrochemical etching includes a marking pool, a marking graphite negative electrode, a marking template, and a marking positive electrode. The marking graphite negative electrode is placed in the marking pool, and a marking conductive carbon felt is placed on top of the marking graphite negative electrode. The marking template covers the top of the marking conductive carbon felt. The marking positive electrode is characterized in that it can move up and down via a positive electrode lifting system. During marking, a fine filament marking body is placed on the marking template. The marking positive electrode presses against the top of the fine filament marking body and moves radially relative to it. Under the friction of the marking positive electrode, the fine filament marking body rolls 360° circumferentially to etch black marks of different widths on the outer surface of the fine filament marking body. The width of the marks is determined by the template. The marking graphite negative electrode is connected to the negative electrode of a power supply.

[0006] It also includes an electrolyte injection plate, which is a long strip and fixed at the front end of the marking positive electrode. Its length direction is arranged along the arrangement direction of the marking positive electrode. The electrolyte injection plate is provided with multiple electrolyte injection holes along its length direction. According to the marking position, an injection tube is inserted into the corresponding electrolyte injection plate, and the other end of the injection tube is connected to an injection pump.

[0007] It also includes an electrolyte suction tube, which is installed at the bottom rear of the marking pool. It suctions the electrolyte from the marking pool when the marking liquid is injected. The other end of the suction tube is connected to the input end of the suction pump, and the output end of the suction pump returns to the storage bottle, so that the electrolyte can be recycled.

[0008] The marking positive electrode includes a marking positive electrode mounting beam, a beam connecting block, a positive electrode upright plate connecting block, and a marking positive electrode upright plate. The marking positive electrode mounting beam is connected to the positive electrode lifting system. Several beam connecting blocks are installed on the marking positive electrode mounting beam. The beam connecting blocks can move laterally on the marking positive electrode mounting beam. The beam connecting blocks are connected to the positive electrode upright plate connecting block below by a screw. A spring is sleeved on the screw. Marking positive electrode upright plates are fixed on both sides of the positive electrode upright plate connecting block. An end baffle is provided at one end of the marking pool.

[0009] It also includes an end groove and a slide plate. An end groove is provided at the end of the marking pool. The slide plate is placed in the end groove and has several slots arranged on it. There is a gap between the slots.

[0010] The marking body of the fine wire fitting is a medical device guide wire.

[0011] The marking positive electrode includes a marking positive electrode mounting beam, a marking positive electrode connecting plate, and a marking positive electrode upright plate. The marking positive electrode mounting beam is connected to the positive electrode lifting system. Several marking positive electrode connecting plates are installed on the marking positive electrode mounting beam. The marking positive electrode connecting plates can move laterally on the marking positive electrode mounting beam. A marking positive electrode upright plate is fixed at the lower part of the marking positive electrode connecting plate. The marking positive electrode upright plate can move up and down on the marking positive electrode connecting plate. A capillary end baffle is provided at one end of the marking pool.

[0012] The marking body of the fine wire tube is a medical device capillary.

[0013] Template clamps are provided on both sides of the marking pool, and the marking templates are pressed and fixed by screws.

[0014] The negative electrode platform for mounting the marking cell moves relative to the positive electrode in the front-back direction under the drive of the negative electrode forward and backward movement system.

[0015] Compared with existing technologies, the beneficial effects of this invention are: 1) This invention uses a marking positive electrode upright plate to push the capillary marking tube to roll automatically, thereby realizing the marking operation on the circumferential direction of small diameter fine wire tubes; this invention has multiple marking positive electrode upright plates with adjustable spacing on the crossbeam of the marking positive electrode device, which can simultaneously complete multiple marking etchings with different spacing along the axial direction of the marking body. This invention has a high degree of automation, stable quality, and high production efficiency.

[0016] 2) This invention has an automatic electrolyte suction function. The electrolyte suction tube is installed at the bottom rear of the marking pool. It suctions the electrolyte when the marking liquid is injected. The other end of the suction tube is connected to the input end of the suction pump. The output end of the suction pump returns to the storage bottle, so that the electrolyte can be recycled.

[0017] 3) The marking positive electrode plate in this invention can be adjusted vertically to the optimal position, thereby finding the optimal pressure value for the capillary and guide wire. If the pressure is too high, the capillary and guide wire will warp and deform laterally, resulting in uneven edges and poor marking effect during rolling marking. If the pressure of the positive electrode stainless steel plate is too low, the conductive carbon felt will thin during use, meaning the carbon felt surface is not completely uniform. If there is no contact during the rolling of the capillary and guide wire, the capillary and guide wire will not roll, will not conduct electricity, and therefore cannot be marked, failing to achieve 360-degree circumference marking. This invention allows for the adjustment of the marking positive electrode plate to the optimal position, thereby finding the optimal pressure value and ensuring stable marking quality.

[0018] 4) This invention designs marking positive electrodes with different pressure surfaces for medical device capillary components (guidewires and capillaries) of different thicknesses. For thinner and softer (flexible) guidewires, a positive electrode vertical plate connecting block is added between the two positive electrodes. The lower part of the positive electrode vertical plate connecting block and the positive electrode vertical plate are on the same plane. When the positive electrode presses on the guidewire, the positive electrode vertical plate connecting block also presses on the guidewire at the same time. When the pressure surface of the marking positive electrode is increased, the bending or non-rolling phenomenon of the guidewire can be avoided.

[0019] 5) The present invention has an electrolyte injection plate fixed at the front end of the marking positive electrode. The electrolyte injection plate is provided with multiple through holes. According to the marking position of different templates, the injection tube can be inserted into the corresponding through hole of the electrolyte injection plate, so that fresh electrolyte can be injected after each marking, ensuring the marking quality of each marking and making large-scale marking have stable and reliable high-quality consistency.

[0020] 6) For thinner and softer guide wires, the present invention has specially designed a slide plate with a slot. The guide wire can roll in the slot and move the slide plate at the same time. Multiple guide wires can be marked at one time, while maintaining a certain distance between the guide wires, thereby avoiding entanglement when multiple guide wires roll. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the capillary marking machine in this invention (without the electrolyte injection plate).

[0022] Figure 2 This is a schematic diagram of the capillary marking machine in this invention (with electrolyte injection plate).

[0023] Figure 3 This is a schematic diagram of the guide wire marking machine in this invention (without the electrolyte injection plate).

[0024] Figure 4 This is a schematic diagram of the wire marking machine in this invention (with electrolyte injection plate).

[0025] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0026] Figure 6 This is a schematic diagram of the liquid suction tube of the guide wire marking machine in this invention.

[0027] Figure 7 This is a schematic diagram of the capillary labeling machine's liquid suction tube in this invention.

[0028] Figure 8 This is a schematic diagram of a capillary marking machine equipped with a capillary end baffle.

[0029] In the diagram: 1. Positive electrode lifting system; 2. Marking positive electrode mounting beam; 3. Screw; 4. Beam connecting block; 5. Spring; 6. Positive electrode upright plate connecting block; 7. Marking pool; 8. Marking graphite negative electrode; 9. Marking positive electrode upright plate; 10. Electrolyte injection plate; 11. Template clamp; 12. Guide wire; 13. End groove; 14. End baffle; 15. Slide plate; 16. Injection tube; 17. Electrolyte injection plate through hole; 18. Marking positive electrode connecting plate; 19. Capillary tube; 20. Lead screw; 21. Moving optical axis; 22. Suction tube; 23. Capillary tube end baffle. Detailed Implementation

[0030] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings: Example 1: This example is applied to the marking of guidewires for medical devices.

[0031] See Figures 3-6 An automatic rolling marking machine for electrochemical etching marking includes a marking pool 7, a marking graphite negative electrode 8, a marking template, and a marking positive electrode. The marking graphite negative electrode 8 is placed in the marking pool 7, and a marking conductive carbon felt is covered on the upper end of the marking graphite negative electrode 8. The marking template covers the upper end of the marking conductive carbon felt. The marking positive electrode can move up and down by the drive of the positive electrode lifting system 1. During marking, the guide wire 12 is placed on the marking template, and the marking positive electrode presses on the upper end of the guide wire 12 and moves relative to the guide wire 12 in the radial direction. Under the action of the friction force of the marking positive electrode, the guide wire 12 rolls 360° in the circumferential direction to achieve the etching of black marks of different widths on the outer surface of the guide wire 12 in the circumferential direction.

[0032] The marking positive electrode assembly includes a marking positive electrode mounting beam 2, a beam connecting block 4, a positive electrode upright plate connecting block 6, and a marking positive electrode upright plate 9. The marking positive electrode mounting beam 2 is connected to the positive electrode lifting system 1. Several beam connecting blocks 4 are installed on the marking positive electrode mounting beam 2. The beam connecting blocks 4 can move laterally on the marking positive electrode mounting beam 2. The positive electrode upright plate connecting block 6 is connected to the beam connecting block 4 below by a screw 3. A spring 5 is sleeved on the screw 3. The marking positive electrode upright plate 9 is fixed on both sides of the positive electrode upright plate connecting block 6. The positive electrode upright plate connecting block 6 can be moved up and down for height adjustment by turning the screw 3. The marking positive electrode upright plate 9 is connected to the positive electrode wire.

[0033] The crossbeam connecting block 4 and the marking positive pole mounting crossbeam 2 can be connected by a plug-in connection to allow the crossbeam connecting block 4 to move left and right. It can be fixed by locking with a set screw.

[0034] An electrolyte injection plate 10 is also provided. The electrolyte injection plate 10 is long and narrow and is fixed to the front end of the marking positive electrode by screws. Its length direction is arranged along the arrangement direction of the marking positive electrode. The electrolyte injection plate 10 is provided with multiple electrolyte injection plate through holes 17 along its length direction. According to the marking position, an injection tube 16 is inserted into the corresponding electrolyte injection plate through hole 17. The other end of the injection tube 16 is connected to the injection pump.

[0035] In this embodiment, an end baffle 14 is provided at one end of the marking pool 7. There are two types of guide wires 12: one with an elbow and one without an elbow. Both the one with an elbow and the one without an elbow need to have their ends pressed against the end baffle 14 for accurate positioning.

[0036] For the guide wire 12 with bends, an end groove 13 and a slide plate 15 are provided. An end baffle 14 is provided on the inner side of the end baffle 14 with an end groove 13. The slide plate 15 is placed in the end groove 13. Several slots are arranged on the slide plate 15, and there is a gap between the slots so as to isolate adjacent guide wires 12 with bends from each other. The purpose is to prevent the guide wires 12 with bends from getting tangled together when rolling during marking. Guide wires without bends do not need to use a slide plate.

[0037] The end baffle 14 serves to position the marking marks. For guide wires 12 with bends, if the goal is to mark multiple guide wires 12 simultaneously, the slide plate 15 maintains a safe distance between the guide wires 12 to prevent them from tangling during rolling. The guide wires 12 will move during rolling, and the slot of the slide plate 15 is larger than the diameter of the guide wire 12, thus not restricting the rolling of the guide wires 12 and allowing it to move along with the guide wires 12. Due to the slide plate 15 of this invention, multiple sets of guide wires 12 can be marked simultaneously, without limiting the number of marks, thus improving productivity.

[0038] Template clamping plates 11 are provided on both sides of the marking pool 7. The template clamping plates 11 are tightened and fixed to the marking template by screws.

[0039] The negative electrode platform for mounting the marking cell 7 moves relative to the positive electrode in the front-back direction under the drive of the negative electrode forward and backward moving system.

[0040] In this embodiment, the negative electrode forward and backward movement system adopts a lead screw slide rail mechanism. The main shaft of the forward and backward movement motor is connected to the lead screw 20. A nut slider is screwed onto the lead screw 20. The nut slider is connected to the marking negative electrode platform. The marking negative electrode platform moves forward and backward along the moving optical axis 21. The forward and backward movement motor adopts a stepper motor or a servo motor.

[0041] Both the positive electrode upright plate 9 and the positive electrode upright plate connecting block 6 are made of stainless steel.

[0042] The positive electrode lifting system 1 in this embodiment also adopts a screw and slide rail mechanism, including a vertical moving motor and a marking positive electrode bracket. The marking positive electrode bracket is connected to the marking positive electrode mounting beam 2. The vertical moving motor drives the marking positive electrode bracket to move up and down through the screw and slide rail mechanism. The vertical moving motor is a stepper motor or a servo motor.

[0043] An electrolyte suction pipe 22 is also provided. The electrolyte suction pipe 22 is installed at the bottom rear side of the marking pool 7. It is used to suction the electrolyte when the marking liquid is injected. The other end of the suction pipe 22 is connected to the input end of the suction pump. The output end of the suction pump returns to the storage bottle, so that the electrolyte can be recycled.

[0044] During marking, several guide wires 12 are placed on the marking template. If the guide wire end plate has a bend, one end of each guide wire 12 is placed in a different slot of the slide plate 15, and the end of the guide wire 12 is made to abut against the end baffle 14. Guide wires without bends do not need to use the slide plate. The positive electrode lifting system 1 lowers the marking positive electrode, and the positive electrode upright connecting block 6 and the marking positive electrode upright plate 9 press against the upper end of the guide wire 12. The liquid injection pump is started to add electrolyte to the marking position through the liquid injection pipe 16. The negative electrode back and forth moving system is started, and the positive electrode upright connecting block 6 and the marking positive electrode upright plate 9 move relative to the guide wire 12 in the radial direction. Under the action of the friction of the positive electrode upright connecting block 6 and the marking positive electrode upright plate 9, the guide wire 12 can roll 360° circumferentially on the marking template to achieve the etching of black marks of different widths on the outer surface of the guide wire 12.

[0045] Example 2: This example is applied to the marking of capillaries in medical devices.

[0046] See Figures 1-2 , Figures 7-8 An automatic rolling marking machine for electrochemical etching marking includes a marking pool 7, a marking graphite negative electrode 8, a marking template, and a marking positive electrode. The marking graphite negative electrode 8 is placed in the marking pool 7, and a marking conductive carbon felt is covered on the upper end of the marking graphite negative electrode 8. The marking template covers the upper end of the marking conductive carbon felt. The marking positive electrode can move up and down by the drive of the positive electrode lifting system 1. During marking, the capillary tube 19 is placed on the marking template, and the marking positive electrode presses on the upper end of the capillary tube 19 and moves relative to the capillary tube 19 in the radial direction. Under the action of the friction force of the marking positive electrode, the capillary tube 19 rolls 360° in the circumferential direction to achieve the etching of black marks of different widths on the outer surface of the capillary tube 19 in the circumferential direction.

[0047] The marking positive electrode includes a marking positive electrode mounting beam 2, a marking positive electrode connecting plate 18, and a marking positive electrode upright plate 9. The marking positive electrode mounting beam 2 is connected to the positive electrode lifting system 1. Several marking positive electrode connecting plates 18 are installed on the marking positive electrode mounting beam 2. The marking positive electrode connecting plates 18 can move laterally on the marking positive electrode mounting beam 2. The marking positive electrode upright plate 9 is fixed at the lower part of the marking positive electrode connecting plate 18. The marking positive electrode upright plate 9 can move up and down on the marking positive electrode connecting plate 18.

[0048] The marking positive electrode plate 9 is connected to the marking positive electrode connecting plate 18 by screws. Long holes in the vertical direction can be set on the marking positive electrode plate 9 to achieve a slight adjustment of the vertical position of the marking positive electrode plate 9. The marking positive electrode plate 9 is connected to the positive electrode wire.

[0049] The marking positive electrode connecting plate 18 and the marking positive electrode mounting beam 2 can be connected by a plug-in connection to allow the marking positive electrode connecting plate 18 to move left and right. It can be fixed by locking with a set screw.

[0050] An electrolyte injection plate 10 is also provided. The electrolyte injection plate 10 is long and narrow and is fixed to the front end of the marking positive electrode by screws. Its length direction is arranged along the arrangement direction of the marking positive electrode. The electrolyte injection plate 10 is provided with multiple electrolyte injection plate through holes 17 along its length direction. According to the marking position, an injection tube 16 is inserted into the corresponding electrolyte injection plate through hole 17. The other end of the injection tube 16 is connected to the injection pump.

[0051] Template clamps are provided on both sides of the marking pool 7. The template clamps are tightened and fixed by screws.

[0052] An electrolyte suction pipe 22 is also provided. The electrolyte suction pipe 22 is installed at the bottom rear side of the marking pool 7. It is used to suction the electrolyte when the marking liquid is injected. The other end of the suction pipe 22 is connected to the input end of the suction pump. The output end of the suction pump returns to the storage bottle, so that the electrolyte can be recycled.

[0053] The negative electrode platform for mounting the marking pool 7 is driven by a negative electrode forward and backward movement system, causing relative movement with the positive electrode in the forward and backward direction. The mechanisms and working principles of the negative electrode forward and backward movement system and the positive electrode lifting system 1 in this embodiment are the same as those in Embodiment 1.

[0054] The positive electrode plate 9 is made of stainless steel.

[0055] During marking, the capillary tube 19 is placed on the marking template. One end of the marking pool 7 is equipped with a capillary end baffle 23, and one end of the capillary tube 19 is abutted against the capillary end baffle 23. The marking positive electrode is lowered so that the marking positive electrode stand 9 presses against the upper end of the capillary tube. The injection pump is started to inject electrolyte into the marking position through the injection pipe 16. The marking negative electrode platform is moved back and forth so that the marking positive electrode stand 9 and the capillary tube 19 move relative to each other in the radial direction. Under the action of the friction of the marking positive electrode stand 9, the capillary tube 19 rolls 360° circumferentially on the marking template to complete the marking operation on the outer surface of the capillary tube 19 in the circumferential direction.

Claims

1. An automatic rolling marking machine for electrochemical etching marking, comprising a marking pool, a marking graphite negative electrode, a marking template, and a marking positive electrode, wherein the marking graphite negative electrode is placed in the marking pool, a marking conductive carbon felt is covering the upper end of the marking graphite negative electrode, and the marking template covers the upper end of the marking conductive carbon felt; characterized in that, The marking positive electrode can move up and down through the positive electrode lifting system. During marking, the marking body of the filament tube is placed on the marking template. The marking positive electrode presses on the upper end of the marking body of the filament tube and moves relative to the marking body of the filament tube in the radial direction. Under the action of the friction of the marking positive electrode, the marking body of the filament tube rolls 360° in the circumferential direction to etch black marks of different widths on the outer surface of the marking body of the filament tube in the circumferential direction. The marking positive electrode includes a marking positive electrode mounting beam, a beam connecting block, a positive electrode upright plate connecting block, and a marking positive electrode upright plate. The marking positive electrode mounting beam is connected to the positive electrode lifting system. Several beam connecting blocks are installed on the marking positive electrode mounting beam. The beam connecting blocks can move laterally on the marking positive electrode mounting beam. The positive electrode upright plate connecting block is connected to the bottom of the beam connecting block by a screw. A spring is sleeved on the screw. The marking positive electrode upright plates are fixed on both sides of the positive electrode upright plate connecting block. An end baffle is provided at one end of the marking pool. The marking positive electrode also includes an end groove and a sliding plate. An end groove is also provided at the end of the marking pool. The sliding plate is placed in the end groove. Several slots are arranged on the sliding plate, and there is a gap between the slots.

2. The automatic rolling marking machine for electrochemical corrosion marking according to claim 1, characterized in that, It also includes an electrolyte injection plate, which is a long strip and fixed at the front end of the marking positive electrode. Its length direction is arranged along the arrangement direction of the marking positive electrode. The electrolyte injection plate is provided with multiple electrolyte injection holes along its length direction. According to the marking position, an injection tube is inserted into the corresponding electrolyte injection plate, and the other end of the injection tube is connected to an injection pump.

3. The automatic rolling marking machine for electrochemical corrosion marking according to claim 1, characterized in that, It also includes an electrolyte suction tube, which is installed at the bottom rear of the marking pool. It suctions the electrolyte from the marking pool when the marking liquid is injected. The other end of the suction tube is connected to the input end of the suction pump, and the output end of the suction pump returns to the storage bottle, so that the electrolyte can be recycled.

4. The automatic rolling marking machine for electrochemical corrosion marking according to claim 1, characterized in that, The marking body of the fine wire fitting is a medical device guide wire.

5. An automatic rolling marking machine for electrochemical corrosion marking according to claim 1, characterized in that, Template clamps are provided on both sides of the marking pool, and the marking templates are pressed and fixed by screws.

6. The automatic rolling marking machine for electrochemical corrosion marking according to claim 1, characterized in that, The negative electrode platform for mounting the marking cell moves relative to the positive electrode in the front-back direction under the drive of the negative electrode forward and backward movement system.

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