A positioning multi-linkage punching device for an integrated flat tube and a punching method thereof

Abstract

The present invention relates to the field of drainage tube processing technology, and discloses a positioning multi-linkage punching device for an integrated flat tube and a punching method thereof, comprising: a multi-degree-of-freedom mobile positioning mechanism, which realizes precise positioning of the punching position through program-controlled three-axis servo module; a tube body clamping and positioning module, which is used to position and press the flat tube to a state where the upper and lower tube walls are in contact; a station rotary cutting mechanism, in which a power unit drives a gear linkage unit to synchronously drive multiple hollow drill bits to perform rotary cutting and punching on the pressed tube body; a waste ejection mechanism, which is set to be fixed to the non-moving part of the multi-degree-of-freedom mobile positioning mechanism, and automatically inserts into the drill cavity to eject waste when the drill bit returns to a preset height. The punching method thereof realizes press-fit positioning, multi-hole synchronous rotary cutting and mechanical linkage chip cleaning based on the above-mentioned device, solves the problems of many burrs and low mold bonding strength in traditional stamping, realizes high-precision, deformation-free punching of the integrated flat tube, and significantly improves the hole wall quality and production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of drainage tube punching, and in particular to a multi-linkage punching device for positioning an integrated flat tube and a punching method thereof. Background Art

[0002] At present, the punching process of flat drainage tubes mainly relies on two types of processing technologies: mechanical stamping and mold forming plus bonding process.

[0003] Taking the existing patent CN212577537U as an example, it discloses a stamping-type mold manufacturing punching device that improves production efficiency by synchronously stamping or cutting with multiple drill bits. Although this type of existing mechanical stamping method can be mass-produced, it is easy to produce tapered holes when the stamping tool contacts the tube wall during processing. The hole diameter depends on the rebound characteristics of the punch and the tube, and it is difficult to maintain dimensional accuracy for a long time. Burrs often remain at the hole position after processing, and the local stress deformation of the tube is serious, affecting the drainage effect and patient comfort.

[0004] On the other hand, patent CN211279434U proposes an integrated mold molding method for a double-lumen silicone drainage tube. By setting the middle plate, bottom plate, straight core, and curved core, not only can a double-lumen silicone tube joint be molded, but the straight silicone tube and the curved silicone tube can be hot-melt connected during the molding process of the double-lumen silicone tube joint. Although this type of existing mold molding solves the problems of hole verticality, precision, and burr residue, the tube body cannot be molded in one piece. The flat tube section and the round tube section are connected together by bonding, resulting in insufficient strength of the tube body during use or tube removal, and it is easy to break at the bonding point, posing reliability and safety risks.

[0005] In summary, the existing technologies either sacrifice the quality of the holes and the integrity of the tube body, or cause insufficient tube body strength and reliability, and are unable to simultaneously meet the clinical use requirements of high precision, multiple holes, one-piece molding and reliable strength. Summary of the Invention

[0006] The problem to be solved by the present invention is that in response to the above-mentioned shortcomings, the present invention proposes an integrated flat tube positioning multi-linkage punching device and a punching method thereof, which can press-fit and position the tube body, perform multi-linkage hollow drill bit rotary cutting, and automatically remove waste, thereby taking into account the aperture accuracy, hole position verticality and overall strength of the tube body, and significantly improving the processing quality and clinical safety.

[0007] In order to solve the above problems, the present invention provides a positioning multi-linkage punching device for an integrated flat tube, comprising:

[0008] A multi-degree-of-freedom mobile positioning mechanism is configured to achieve three-dimensional spatial positioning through program control, moving the station rotary cutting mechanism to the desired punching position;

[0009] The tube body clamping and positioning module includes a switchable pressing mechanism for positioning and pressing the flat tube until the upper and lower tube walls are in contact;

[0010] The station rotary cutting mechanism is connected to the multi-freedom mobile positioning mechanism, and includes at least one group of multi-linkage rotary cutting and punching units driven by a power unit, and is used to perform rotary cutting and punching of multiple holes on multiple groups of pressed tubes simultaneously or sequentially;

[0011] The waste ejection mechanism is set as a non-moving part fixed to the multi-degree-of-freedom mobile positioning mechanism. After completing the punching action, it automatically ejects the chips or waste in the multi-linkage rotary cutting and punching unit through the ejector structure when the multi-degree-of-freedom mobile positioning mechanism returns to a predetermined height, and automatically removes the residual waste in the multi-linkage rotary cutting and punching unit.

[0012] Preferably, the multi-degree-of-freedom mobile positioning mechanism is a three-axis slide module, including a Z-axis module, a Y-axis module, and an X-axis module arranged in multiple dimensions. Each axis is driven by a servo motor and has a position feedback sensor. A Z-axis module adapter plate is provided between the Z-axis module and the Y-axis module, and the Z-axis module adapter plate is arranged in the same direction as the Z-axis module. The multi-degree-of-freedom mobile positioning mechanism enables precise displacement control of the punch head in the X, Y, and Z directions. The servo motor and position feedback system ensure high repeatability and high precision of the punching position. Compared with the mechanical single-axis slide rail or manual positioning method in the existing technology, it avoids the problem of hole position offset caused by human error or structural gap.

[0013] Preferably, the multi-degree-of-freedom mobile positioning mechanism is fixed on the operating platform, the workstation rotating cutting mechanism is fixed on the Z-axis module, and the waste ejection mechanism is fixed on the Z-axis module adapter plate, which does not move up and down with the Z-axis module, so that the cutting and waste removal actions are independent of each other and do not interfere with each other, which not only ensures the stability of the cutting head during the punching process, but also realizes accurate and reliable cleaning of waste chips during the return stroke, avoids drill blockage or fluctuations in drilling quality caused by waste retention during the cutting process, and realizes movement independence and stability of waste cleaning during the punching process.

[0014] Preferably, the tube body clamping and positioning module includes:

[0015] The tube body positioning base plate carries the flat tube to be processed;

[0016] A taper limiting plate is movably arranged on the tube body positioning bottom plate and is used to restrict the width deformation of the tube body during the pressing process;

[0017] The pneumatic pressing assembly, comprising a cylinder and a tube-linked pressing plate, is configured to adapt the tapered stop plate to tube deformation during the pressing stroke, aligning the upper and lower walls of the flat tube. The tapered stop plate adapts to changes in tube width during the pressing stroke, preventing tube distortion or tilting due to uneven pressing. The pneumatic pressing assembly maintains the upper and lower tube walls in contact, dynamically compensating for deformation caused by pressing or material hardness differences. This provides an extremely smooth and stable drilling surface, avoiding hole position deviations caused by "flanging" or "warping" of the tube wall in traditional rigid fixtures, as well as hole eccentricity or deformation caused by single-sided punching, and improves the alignment accuracy of the upper and lower wall holes.

[0018] Preferably, a clearance hole is provided on the tube body positioning base plate, and the tapered end of the taper limit plate passes through the clearance hole and extends to the upper end of the tube body positioning base plate. The bottom end of the taper limit plate is fitted to the lower end of the tube body positioning base plate and connected by a support screw, and a support spring is provided on the support screw. The taper limit plate is fixed to the tube body positioning base plate by the support screw. The taper limit plate can move up and down in the tube body positioning base plate, and the support spring is sleeved on the support screw. When the tube body pressure plate is opened, the taper limit plate can be reset. The taper limit plate moves up and down with the help of the clearance hole and is reset by the spring. No additional reset drive mechanism is required, and self-recovery positioning can be achieved, thereby simplifying the device structure. At the same time, it is ensured that the taper limit plate has sufficient rigid constraints in the clamped state and can flexibly adapt to changes in tube width, thereby improving module reliability and maintenance convenience.

[0019] Preferably, the power unit includes a plurality of motors distributed in a linear array, and the multi-linked rotary cutting and punching unit includes a main gear, a driven gear and a hollow drill bit. The motor synchronously drives at least two driven gears through the main gear, and each driven gear is coaxially connected to the hollow drill bit to form a gear-driven rotary cutting and punching structure. The multiple motors are arranged linearly and synchronously drive multiple hollow drill bits through the main and driven gear sets, which can evenly distribute the driving torque and maintain the synchronous speed of each drill bit, avoiding the common "tool walking" or "speed deviation" phenomenon in single drill bit drilling, thereby further improving the stability and processing accuracy of multi-point simultaneous drilling.

[0020] Preferably, the waste ejection mechanism includes a discharge needle body, which is fixedly distributed at the lower end of the positioning connecting plate. The two ends of the positioning connecting plate are respectively fixedly connected to a single L-shaped connecting plate. The L-shaped connecting plate is fixed on the Z-axis module adapter plate. When the Z-axis module of the station rotary cutting mechanism moves up to a preset height, the discharge needle body can be accurately inserted into the inner cavity of each drill bit to eject the chips. No additional pneumatic or motor drive is required, and no additional sensor control system is required. This not only realizes the simultaneous cleaning of multiple drill bit waste chips at one time, but also avoids the instability of traditional air blowing or manual cleaning, significantly improving the waste removal efficiency and the continuous operation capability of the equipment. The discharge structure is fixed at the non-moving end of the Z-axis module adapter plate. The ejection action is not affected by the operating accuracy of the Z-axis module, and the working stability is stronger, which completely solves the problem of drilling failure caused by chip blockage in traditional devices.

[0021] Preferably, a control and operation module is provided on the operating platform for receiving user instructions and controlling the coordinated actions of the aforementioned modules to realize automatic positioning and multi-point punching of the drainage tube. The control and operation module includes a touch screen and a PLC control unit. The PLC control unit accepts touch screen input and outputs movement and punching instructions; the execution logic of the PLC control unit includes: responding to a start signal to trigger the tube body pressing; controlling the multi-axis positioning mechanism to move the workstation rotary cutting mechanism according to a preset coordinate sequence; synchronously executing waste removal and point switching after single-point punching is completed; and resetting to standby state after completing the punching sequence.

[0022] Compared with the prior art, the present invention has the following beneficial technical effects:

[0023] The present invention uses a multi-link rotary cutting and punching unit of a station rotary cutting mechanism for punching, replacing the traditional stamping process. It can realize rotary cutting perpendicular to the pipe wall, with smooth and vertical hole walls, effectively avoiding the appearance of tapered holes, and significantly reducing dimensional deviations caused by impact or rebound, thereby greatly improving the roundness and consistency of the hole pattern, and improving the quality and dimensional accuracy of the punched hole pattern. Through the taper limit plate and pneumatic pressing mechanism of the pipe body clamping and positioning module, the upper and lower walls of the pipe body are tightly fitted, forming a stable processing surface before punching, avoiding hole position deviations caused by separation or warping of the pipe wall, and making the hole pattern closer to a circle, improving the processing consistency and accuracy of the multi-hole arrangement, thereby realizing the fitting and positioning of the upper and lower walls of the flat pipe section and improving the processing accuracy of the multi-hole positions.

[0024] The present invention can effectively avoid burrs on the hole and material deformation, and improve the comfort and safety of use. The hollow drill bit adopts a rotary cutting method to cut the hole, and cooperates with the automatic ejection structure of the waste material to effectively eliminate the problem of residual burrs on the edge of the hole after punching, and avoid damage to the tissue due to burrs during the drainage process; at the same time, it reduces the overall stress impact on the tube wall, and prevents the flat tube from warping, bulging or collapsing, thereby improving the drainage effect of the tube body and the patient's comfort, and improving the consistency of the finished product and clinical safety.

[0025] The present invention improves production efficiency and the degree of automation. It adopts a multi-linkage drill module, and can complete the processing of multiple holes synchronously or sequentially according to the requirements of the hole positions of the pipe body. Compared with the single-head mobile punching device, it can significantly shorten the processing cycle and is suitable for different flat pipe punching requirements. It cooperates with PLC program control and a three-axis slide to realize automatic feeding positioning, pressing, punching and waste cleaning, realizing one-stop automated operation as a whole, reducing the frequency of manual intervention, and improving punching efficiency and production rhythm.

[0026] The present invention is different from the prior art method of using mold forming and then bonding the pipe sections. The punching device of the present invention can be directly applied to the one-piece flat tube structure, avoiding hidden dangers such as structural weakness, bonding failure, and tube breakage caused by the bonding process, ensuring the overall strength of the tube body and long-term reliability, thereby ensuring the structural strength of the tube body and adapting to the processing requirements of the one-piece flat tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the integrated flat tube positioning multi-linkage punching device of the present invention.

[0028] Figure 2 This is a structural diagram of a multi-degree-of-freedom mobile positioning mechanism.

[0029] Figure 3 This is a structural diagram of the tube body clamping and positioning module.

[0030] Figure 4 This is a structural diagram of the connection between the taper limit plate and the tube body positioning base plate.

[0031] Figure 5 It is a structural diagram of the workstation rotary cutting mechanism.

[0032] Figure 6 It is a structural diagram of the multi-link rotary cutting and punching unit.

[0033] Figure 7 Schematic diagram of the structure of the waste ejection mechanism.

[0034] Figure 8 A structural diagram of the operating platform.

[0035] In the figure: 1- multi-degree-of-freedom mobile positioning mechanism, 101- Z-axis module, 102- Y-axis module, 103- X-axis module, 104- Z-axis module adapter plate, 2- control and operation module, 3- tube body clamping and positioning module, 30- pressing mechanism, 301- cylinder, 302- tube body linkage pressure plate, 303- taper limit plate, 304- tube body positioning base plate, 305- support spring, 306- support screw, 4- station rotary cutting mechanism, 41- power unit, 42- multi- linkage rotary cutting and punching unit, 421- main gear, 422- driven gear, 423- hollow drill bit, 5- waste ejection mechanism, 501- unloading needle body, 502- positioning connecting plate, 503- L-type connecting plate, 6- operating platform. DETAILED DESCRIPTION

[0036] The present invention will be further explained below with reference to the accompanying drawings and embodiments.

[0037] Example 1: Reference Figure 1-8 As shown, a positioning multi-linkage punching device for an integrated flat tube comprises: a multi-degree-of-freedom mobile positioning mechanism 1 fixed on an operating platform 6, configured to achieve three-dimensional spatial positioning through program control, and move the workstation rotary cutting mechanism 4 to the desired punching position; a tube body clamping and positioning module 3, comprising a switchable pressing mechanism 30, for positioning and pressing the flat tube to a state where the upper and lower tube walls are in contact; the workstation rotary cutting mechanism 4, which is driven and connected to the multi-degree-of-freedom mobile positioning mechanism 1, comprises at least one group of multi-linkage rotary cutting and punching units 42 driven by a power unit 41, for performing rotary cutting and multi-hole punching on multiple groups of pressed tube bodies simultaneously or sequentially; a waste ejection mechanism 5, which is arranged to be fixed to a non-moving part of the multi-degree-of-freedom mobile positioning mechanism 1, and after completing the punching action, automatically ejects the chips or waste in the multi-linkage rotary cutting and punching unit 42 through a pin structure when the multi-degree-of-freedom mobile positioning mechanism 1 returns to a predetermined height, and automatically removes the residual waste in the multi-linkage rotary cutting and punching unit 42; the control and operation module 2 is integrated at the front end of the operating platform 6.

[0038] Reference Figure 2 As shown, the multi-degree-of-freedom mobile positioning mechanism 1 is a three-axis slide module, including a Z-axis module 101, a Y-axis module 102, and an X-axis module 103 arranged in multiple dimensions. Each axis is driven by a servo motor and has a position feedback sensor. A Z-axis module adapter plate 104 is provided between the Z-axis module 101 and the Y-axis module 102, and the Z-axis module adapter plate 104 is arranged in the same direction as the Z-axis module 101. The multi-degree-of-freedom mobile positioning mechanism 1 enables precise displacement control of the punch head in the X, Y, and Z directions. The servo motor and position feedback system ensure high repeatability and high precision of the punch position. Compared with the mechanical single-axis slide or manual positioning methods in the prior art, it avoids the problem of hole position offset caused by human error or structural gaps.

[0039] Reference Figure 1-2 As shown, the multi-degree-of-freedom mobile positioning mechanism 1 is fixed on the operating platform 6, the workstation rotating cutting mechanism 4 is fixed on the Z-axis module 101, and the waste ejection mechanism 5 is fixed on the Z-axis module adapter plate 104, which does not move up and down with the Z-axis module 101, so that the cutting and waste removal actions are independent of each other and do not interfere with each other, which not only ensures the stability of the cutting head during the punching process, but also realizes the accurate and reliable cleaning of waste chips during the return stroke, avoids drill blockage or fluctuation in punching quality caused by waste retention during the cutting process, and realizes the independence of movement and stability of waste cleaning during the punching process.

[0040] Reference Figure 3-4 As shown, the tube body clamping and positioning module 3 includes: a tube body positioning base plate 304, which supports the flat tube to be processed; a taper limit plate 303, which is movably arranged on the tube body positioning base plate 304 and is used to constrain the width deformation of the tube body during the pressing process; and a pneumatic pressing assembly, including a cylinder 301 and a tube body linkage pressing plate 302, which is configured to make the taper limit plate 303 adapt to the deformation of the tube body during the pressing stroke, so that the upper and lower walls of the flat tube are in contact. The tube body positioning base plate 304 is provided with a clearance hole slot, and the tapered end of the taper limit plate 303 passes through the clearance hole slot and extends to the upper end of the tube body positioning base plate 304. The bottom end of the taper limit plate 303 is in contact with the lower end of the tube body positioning base plate 304 and is connected by a support screw 306, and the support screw 306 is provided with a support spring 305. The taper limit plate 303 is fixed to the tube body positioning base plate 304 by the support screw. The flat tube is placed horizontally on the tube body positioning base plate 304, with the tube side close to the inclined surface of the tapered limit plate 303; the cylinder 301 drives the tube body linkage pressure plate 302 to press down, and the tapered limit plate 303 moves downward under the tube width expansion force, compressing the support spring 305; when the upper and lower tube walls are completely fitted together, the conical surface of the tapered limit plate 303 constrains the tube width deformation, and when the pressure plate 302 is lifted, the support spring 305 pushes the tapered limit plate 303 to slide up and reset along the support screw 306.

[0041] Reference Figure 5-6 As shown, the power unit 41 includes a plurality of motors distributed in a linear array, and the multi-linked rotary cutting and punching unit 42 includes a main gear 421, a driven gear 422 and a hollow drill bit 423. The motor synchronously engages the driven gears 422 on both sides through the main gear 421, and each driven gear 422 is coaxially connected to the hollow drill bit 423 to form a gear-driven rotary cutting and punching structure. The multiple motors are arranged linearly and synchronously drive multiple hollow drill bits through the main and driven gear sets, which can evenly distribute the driving torque and maintain the synchronous speed of each drill bit, avoiding the common "tool walking" or "speed deviation" phenomenon in single drill bit drilling, thereby further improving the stability and processing accuracy of multi-point simultaneous drilling.

[0042] Reference Figure 7 As shown, the waste ejection mechanism 5 includes a discharge needle body 501, which is fixedly distributed at the lower end of the positioning connecting plate 502. The two ends of the positioning connecting plate 502 are respectively fixedly connected to a single L-shaped connecting plate 503, and the L-shaped connecting plate 503 is fixed on the Z-axis module adapter plate 104. When the Z-axis module of the station rotary cutting mechanism 4 moves up to a preset height, the discharge needle body can be accurately inserted into the inner cavity of each drill bit to eject the chips. No additional pneumatic or motor drive is required, and no additional sensor control system is required. This not only realizes the simultaneous cleaning of multiple drill bit waste chips at one time, but also avoids the instability of traditional air blowing or manual cleaning, significantly improving the waste removal efficiency and the continuous operation capability of the equipment. The discharge structure is fixed at the non-moving end of the Z-axis module adapter plate. The ejection action is not affected by the operating accuracy of the Z-axis module, and the working stability is stronger, which completely solves the problem of drilling failure caused by chip blockage in traditional devices.

[0043] In summary, the present invention not only overcomes the defects of the prior art such as poor hole accuracy, easy burrs, and insufficient structural strength, but also achieves a comprehensive improvement in the drainage tube processing quality, efficiency and reliability through integrated design and automated operation, and has significant practical value and promotion prospects.

[0044] The punching method of the multi-link punching device of the present invention comprises the following steps:

[0045] S1. Flat tube clamping: Place the flat tube to be processed horizontally on the tube body clamping and positioning module 3, align the two sides of the tube fitting with the tapered end of the tapered limit plate 303 in turn, limit the width of the flat tube, start the control and operation module 2, click the "Loading" command on the touch screen, control the cylinder 301 of the pressing mechanism 30 to start, the cylinder 301 quickly extends, and drives the tube body linkage pressing plate 302 to press downward. The tapered limit plate 303 is automatically lifted under the action of the support spring 305 to adapt to the tube width until the tube walls are tightly fitted up and down and the force on both sides is even.

[0046] S2. Coordinate Positioning: Based on the preset hole coordinate sequence, the X-axis module 103, Y-axis module 102, and Z-axis module 101 of the multi-degree-of-freedom mobile positioning mechanism 1 are driven to move above the drilling position. After the three-axis servo motor closed-loop feedback confirms that the position is met, the slide stops and proceeds to the next step.

[0047] S3. Peeling and Drilling: When Z-axis module 101 descends to the set depth, the motor of power unit 41 of station rotary cutting mechanism 4 starts, and master gear 421 drives driven gear 422 to rotate synchronously. Hollow drill bit 423 cuts the pipe wall at a constant speed, completing the multi-link peeling and drilling action. During the drilling process, the pipe body remains pressed together, and a complete circular hole is formed on both the upper and lower walls simultaneously, without burrs, and with the hole wall vertical.

[0048] S4. Waste Removal: After hollow drill bit 423 clears the pipe wall, it continues upward to a preset chip removal height. The waste ejection mechanism 5, with its positioning connecting plate 502 and L-shaped connecting plate 503 securing the discharge needle 501, automatically inserts into each drill cavity, ejecting the chips all at once into the chip chute. After discharge is complete, the discharge needle 501 returns to its initial position.

[0049] S5, cyclic processing and unloading: the control and operation module 2 determines whether the current hole processing is completed, and determines the remaining holes according to the preset program. If there are unprocessed holes, the X and Y axes are driven to move to the next coordinate, and steps S3 to S4 are repeated; if all hole processing is completed, the Z axis and the X and Y axes are driven to reset to the origin, the cylinder 301 retracts, the tube body linkage pressure plate 302 is lifted, and the flat tube can be taken out from the tube body clamping and positioning module 3.

[0050] S6. Tube Replacement and Maintenance: After removing the processed flat tube, the next tube can be placed directly for automated processing. During downtime for maintenance, the taper stop plate 303 and the tube positioning base plate 304 can be removed and inspected for wear by loosening the support screws 306. The multi-link drill unit 42 can also quickly replace the drill bit 423 and clean the master and slave gear sets to maintain transmission accuracy.

[0051] Punching holes (S1-S3) during the press-fit process prevents separate bonding. Tensile tests show that the tensile strength of the flat tube and round tube connection area is significantly higher than that of the bonded tube, ensuring tube strength. The zero-burr principle: Peeling speed exceeds the critical punching speed, suppressing plastic deformation of the material. Microscopic inspection of the hole edge confirms the absence of tears.

[0052] The unloading mechanism (S4) is mechanically linked to the Z-axis motion, eliminating the risk of sensor failure. Even after processing tens of thousands of tubes continuously, the drill blockage rate remains close to zero, effectively improving continuous processing reliability.

[0053] In the above embodiment, the multi-degree-of-freedom mobile positioning mechanism 1, the tube body clamping and positioning module 3, the workstation rotary cutting mechanism 4, the waste ejection mechanism 5, the control and operation module 2, etc. can all be optimized and selected according to the required structural form and material to meet the processing requirements of different tube diameters, wall thicknesses and hole densities.

[0054] Example 2: Based on Example 1, the control and operation module 2 can add a visual software interface to enable online adjustment of parameters such as single-hole cutting speed, feed depth, and inter-hole delay time. Users can access the "Parameter Settings" interface on the touch screen to fine-tune the rotation speed of the power unit 41 and the descent rate of the Z-axis 101 to adapt to flat tubes of varying hardness and elasticity, further improving hole wall quality and processing efficiency.

[0055] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0056] It should be noted that, in the present invention, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0057] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is to be construed in the widest possible manner consistent with the principles and novel features of the invention described herein.

Claims

1. A positioning multi-linkage punching device for an integrated flat tube, comprising: The multi-degree-of-freedom mobile positioning mechanism (1) is configured to realize three-dimensional spatial positioning through program control, and move the station rotary cutting mechanism (4) to the desired punching position; and is characterized in that: The tube body clamping and positioning module (3) includes a switchable pressing mechanism (30) for positioning and pressing the flat tube to a state where the upper and lower tube walls are in contact with each other; A station rotary cutting mechanism (4) is connected to the multi-degree-of-freedom mobile positioning mechanism (1) and includes at least one group of multi-linkage rotary cutting and punching units (42) driven by a power unit (41) for performing rotary cutting and punching of multiple holes simultaneously or sequentially on multiple groups of pressed tube bodies; The waste ejection mechanism (5) is configured as a non-moving part fixed to the multi-degree-of-freedom mobile positioning mechanism (1), and after completing the punching action, automatically ejects the chips or waste in the multi-linkage rotary cutting and punching unit (42) through the ejector structure when the multi-degree-of-freedom mobile positioning mechanism (1) returns to a predetermined height, thereby automatically removing the residual waste in the multi-linkage rotary cutting and punching unit (42); The multi-degree-of-freedom mobile positioning mechanism (1) is a three-axis slide module, comprising a Z-axis module (101), a Y-axis module (102), and an X-axis module (103) arranged in multiple dimensions, each axis being driven by a servo motor and having a position feedback sensor, a Z-axis module adapter plate (104) being arranged between the Z-axis module (101) and the Y-axis module (102), and the Z-axis module adapter plate (104) being arranged in the same direction as the Z-axis module (101); The tube body clamping and positioning module (3) comprises: The tube body positioning base plate (304) carries the flat tube to be processed; A taper limiting plate (303) is movably arranged on the tube body positioning base plate (304) and is used to restrict the width deformation of the tube body during the pressing process; A pneumatic pressing assembly, comprising a cylinder (301) and a tube body linkage pressing plate (302), is configured to cause the tapered stop plate (303) to adapt to the deformation of the tube body during the pressing stroke, so that the upper and lower walls of the flat tube are in contact with each other; The power unit (41) includes a plurality of motors distributed in a linear array, and the multi-linked rotary cutting and punching unit (42) includes a main gear (421), a driven gear (422), and a hollow drill bit (423). The motor synchronously drives at least two driven gears (422) through the main gear (421), and each driven gear (422) is coaxially connected to the hollow drill bit (423), forming a gear-driven rotary cutting and punching structure. The waste ejection mechanism (5) includes a discharge needle body (501), which is fixedly distributed at the lower end of the positioning connecting plate (502), and the two ends of the positioning connecting plate (502) are respectively fixedly connected to a single L-shaped connecting plate (503), and the L-shaped connecting plate (503) is fixed on the Z-axis module adapter plate (104). When the Z-axis module (101) of the station rotary cutting mechanism (4) moves up to a preset height, the discharge needle body (501) is automatically inserted into the inner cavity of the hollow drill bit (423) to eject the waste.

2. The positioning multi-linkage punching device for an integrated flat tube according to claim 1, characterized in that: The station rotary cutting mechanism (4) is fixed on the Z-axis module (101), the waste ejection mechanism (5) is fixed on the Z-axis module adapter plate (104) and does not move up and down with the Z-axis module (101), and the multi-degree-of-freedom mobile positioning mechanism (1) is fixed on the operating platform (6).

3. The positioning multi-linkage punching device for an integrated flat tube according to claim 1, characterized in that: A clearance hole is provided on the tube body positioning base plate (304), and the tapered end of the taper limiting plate (303) passes through the clearance hole and extends to the upper end of the tube body positioning base plate (304). The bottom end of the taper limiting plate (303) is attached to the lower end of the tube body positioning base plate (304) and connected via a support screw (306). A support spring (305) is provided on the support screw (306).

4. The positioning multi-linkage punching device for an integrated flat tube according to claim 2, characterized in that: The operating platform (6) is provided with a control and operation module (2) for receiving user instructions and controlling the coordinated actions of the modules to achieve automatic positioning and multi-point punching of the drainage tube. The control and operation module (2) includes a touch screen and a PLC control unit. The PLC control unit receives input from the touch screen and outputs movement and punching instructions.

5. A method for punching a hole using a positioning multi-linkage punching device for an integrated flat tube, characterized in that: Using the positioning multi-linkage punching device for an integrated flat tube according to any one of claims 1 to 4 comprises the following steps: S1. Flat tube clamping: Place the flat tube to be processed horizontally on the tube body clamping and positioning module (3), align the two sides of the tube fitting with the tapered ends of the tapered limit plate (303) in sequence, and limit the width of the flat tube. Start the control and operation module (2), click the "loading" command on the touch screen, and control the cylinder (301) of the pressing mechanism (30) to start. The cylinder (301) quickly extends, driving the tube body linkage pressing plate (302) to press downward. The tapered limit plate (303) is automatically lifted under the action of the support spring (305) to adapt to the tube width until the tube wall is tightly fitted up and down and the force on both sides is even; S2, coordinate positioning: according to the preset hole position coordinate sequence, drive the X-axis module (103), Y-axis module (102), and Z-axis module (101) of the multi-degree-of-freedom mobile positioning mechanism (1) to move to the top of the punching position; after the closed-loop feedback of the three-axis servo motor confirms that the position meets the standard, the slide stops and enters the next step; S3, rotary cutting and punching: When the Z-axis module (101) descends to the set depth, the motor of the power unit (41) of the station rotary cutting mechanism (4) is started, the main gear (421) drives the driven gear (422) to rotate synchronously, and the hollow drill bit (423) cuts the pipe wall at a constant speed, completing the multi-link rotary cutting and punching action; during the punching process, the pipe body remains in a pressed state, and a complete circular hole is formed on the upper and lower walls at the same time, without burrs, and the hole wall is vertical; S4, waste removal: the hollow drill bit (423) rises to leave the pipe wall and continues to rise to the preset chip cleaning height, the positioning connecting plate (502) of the waste ejection mechanism (5) and the unloading needle body (501) fixed by the L-shaped connecting plate (503) are automatically inserted into each drill bit cavity to eject the chips into the chip collecting groove at one time; after the unloading is completed, the unloading needle body (501) is reset to the initial state; S5, cyclic processing and unloading: the control and operation module (2) determines whether the current hole processing is completed, and determines the remaining hole processing according to the preset program. If there are unprocessed holes, the X and Y axes are driven to move to the next coordinate, and steps S3 to S4 are repeated; if all hole processing is completed, the Z axis and the X and Y axes are driven to reset to the origin, the cylinder (301) is retracted, the tube body linkage pressure plate (302) is lifted, and the flat tube can be taken out from the tube body clamping and positioning module (3).

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