Vacuum cup blank separation equipment based on laser cup separation

Abstract

The invention relates to the field of vacuum cup laser cutting, and discloses vacuum cup blank separation equipment based on laser cup separation, which comprises a cup blank laser cutting machine, a clamping pipe rotating structure, a clamping pipe pushing mechanism, a guide rail group and a material gathering mechanism. The cup blank laser cutting machine is provided with a laser cutting part and a machining platform, the clamping pipe rotating structure comprises a concentric positioning structure and a rotating structure, and the clamping pipe pushing mechanism is arranged on the guide rail set in a sliding mode. In the working process, the pipe clamping pushing mechanism clamps a blank pipe, and the guide rail set drives the blank pipe to be fed into the machining platform through the feeding empty window; a concentric positioning structure of the pipe clamping and rotating structure synchronously clamps the blank pipe at four points and performs concentric positioning, the rotating structure drives the blank pipe to axially rotate, and a laser cutting part emits a fixed light beam to complete annular cutting; and the cut blanks are buffered by the material gathering mechanism and then are collected. The equipment solves the problems of clamping eccentricity, movement interference, blanking damage and the like of traditional equipment, improves the cutting precision and efficiency, remarkably improves the qualified rate of finished products, and is suitable for continuous machining of blanks of multiple specifications.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of laser cutting of vacuum cups, in particular to a vacuum cup blank separation equipment based on laser cup separation. BACKGROUND

[0002] Vacuum cups have become a common appliance in daily life and industrial scenes due to their excellent heat preservation performance. In the production process, the precise separation of the blank pipe is one of the core processes that determines the quality of the finished product. The vacuum cup blank is usually made of a long strip of metal pipe as raw material, which needs to be cut into independent pipe segments according to the design height, and then subjected to subsequent processing such as necking, welding, polishing, etc. With the increasing demand of consumers for the appearance flatness and size accuracy of vacuum cups, the traditional mechanical cutting method has been gradually replaced by laser cutting due to its high cutting accuracy and smooth cutting edge. Laser cutting has become the mainstream technology in the field of blank separation due to its small heat-affected zone and smooth cutting edge. The key to achieving precise and efficient laser cutting is to provide a stable clamping, synchronous rotation, and precise feeding mechanism for the blank pipe.

[0003] When laser cutting is applied to the separation of vacuum cup blanks, there are still some problems. First, the clamping concentricity of the blank pipe is insufficient. Traditional clamping mechanisms usually use double-sided single-point clamping, which can easily cause the axis of the blank pipe to deviate from the center of rotation, resulting in an elliptical laser cutting trajectory and a cutting inclination error of more than 0.5mm. An additional flattening process is required. Second, the rotation and feeding movements interfere with each other. In some devices, the rotation driving force and the transverse feeding force of the blank pipe interfere with each other, causing feeding jamming or rotation speed fluctuations, which not only reduces the processing efficiency, but also may cause cutting ripples due to uneven cutting speed. Therefore, we propose a vacuum cup blank separation equipment based on laser cup separation. SUMMARY

[0004] To overcome the shortcomings of the prior art, the present application provides a vacuum cup blank separation equipment based on laser cup separation, which solves the above problems.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a vacuum cup blank separation equipment based on laser cup separation, comprising:

[0006] A cup blank laser cutting machine is provided with a laser cutting part containing a laser cutting head at the top. The middle part of the cup blank laser cutting machine is provided with an open processing platform below the laser cutting part. The inside of the cup blank laser cutting machine corresponding to the lower part of the processing platform is hollow. An air window is provided on the side of the cup blank laser cutting machine, which is connected to the processing platform. A guide rail opening slot is provided on the processing platform, which leads to the air window. The bottom center of the guide rail opening slot corresponding to the air window is open.

[0007] The pipe clamping rotating structure is arranged at the middle of the processing platform, and is composed of a concentric positioning structure and a rotating structure. The concentric positioning structure is used for clamping and fixing the cutting end of the heat preservation cup blank pipe. The concentric positioning structure is assembled in the rotating structure so that the heat preservation cup blank pipe has axial rotation freedom. The overall transverse axis of the pipe clamping rotating structure is perpendicular to the vertical axis of the laser cutting head in the laser cutting part.

[0008] The blanking rectangular groove is arranged below the laser cutting head in the laser cutting part and at one side of the pipe clamping rotating structure. A material collecting mechanism is arranged in and below the blanking rectangular groove and is used for collecting and taking out the cut and separated blank. The blanking rectangular groove and the guide rail opening groove are arranged at opposite sides of the pipe clamping rotating structure.

[0009] The pipe clamping advancing mechanism is arranged outside the cup blank laser cutting machine and has the same horizontal axis as the overall axis of the pipe clamping rotating structure. The processing platform is provided with a guide rail group extending outward through the feeding air window. The pipe clamping advancing mechanism is slidingly arranged on the guide rail group. The pipe clamping advancing mechanism is used for clamping and fixing the outermost end of the heat preservation cup blank pipe and enabling the heat preservation cup blank pipe to have transverse displacement freedom along the middle line of the length of the processing platform.

[0010] The heat preservation cup blank pipe has axial rotation freedom in the pipe clamping advancing mechanism and has transverse displacement freedom in the pipe clamping rotating structure.

[0011] Preferably, the rotating structure in the pipe clamping rotating structure comprises a base ring, a driving wheel, a micro servo motor, a clamping ring limiting piece and a rotating ring. A center groove is arranged at the middle of the processing platform. An integrated base is fixedly arranged at the bottom end of the base ring and is fixedly installed at the center of the bottom inner wall of the center groove.

[0012] At least four groups of driving wheels are rotatably arranged on one side of the ring end face of the base ring. The groups of driving wheels are annularly and equidistantly distributed. A micro servo motor is fixedly installed at a position corresponding to each group of driving wheels on the other side of the ring end face of the base ring. The output shaft of each micro servo motor penetrates the outer side of the base ring and is fixedly connected with each group of driving wheels.

[0013] The rotating ring is rotatably clamped in the groups of driving wheels. The groups of driving wheels are attached to the outer ring face of the rotating ring. The center of the rotating ring and the center of the base ring are located on the same horizontal axis. The concentric positioning structure is arranged in the rotating ring.

[0014] The clamping ring limiting pieces limiting the two sides of the rotating ring are fixedly installed on the ring end face of the base ring. The two clamping ring limiting pieces are mutually symmetrical and have arc-shaped inner surfaces matched with the rotating ring. The cross section of the clamping ring limiting piece is a horizontally arranged L shape.

[0015] Preferably, the base ring and the clamping ring limiting member are provided with a plurality of semispherical grooves on the opposite and parallel spaced ring end faces and the inner arc wall, and each semispherical groove is embedded with a spherical rotor with a convex surface, the spherical rotor has a universal rotation degree of freedom, and the spherical rotor on the base ring and the spherical rotor on the clamping ring limiting member respectively fit the two side ring end faces of the rotating ring.

[0016] Preferably, the concentric positioning structure comprises a clamping pipe limiting ring, a gear ring, a clamping pipe arm and a clamping pipe wheel, the inner diameters of the base ring and the rotating ring are the same and larger than the outer diameter of the clamping pipe limiting ring, the top end and the bottom end of the clamping pipe limiting ring are integrally provided with an integral arc plate, and the arc plate is arc-shaped and perpendicular to the clamping pipe limiting ring, the top end and the bottom end of the inner ring surface of the rotating ring are integrally provided with an integral connecting piece, and the opposite end faces of the upper and lower two groups of connecting pieces are respectively fixedly connected with the upper and lower two groups of arc plates on the clamping pipe limiting ring;

[0017] The center of the clamping pipe limiting ring and the center of the rotating ring are located on the same horizontal axis.

[0018] The inner diameters of the clamping pipe limiting ring and the gear ring are the same, the arc end sides of the upper and lower two groups of arc plates away from the clamping pipe limiting ring are integrally provided with an integral toothed bending piece, and the upper and lower two groups of toothed bending pieces are mutually symmetrical, the mutually close end heads of the upper and lower two groups of toothed bending pieces are integrally provided with an integral arc-shaped bending part, and the toothed bending piece is L-shaped in cross section.

[0019] One side ring end face of the gear ring is provided with a limiting ring groove matched with the arc-shaped bending part of the toothed bending piece, and the gear ring is clamped with the arc-shaped bending parts of the upper and lower two groups of toothed bending pieces through the limiting ring groove, the centers of the clamping pipe limiting ring and the gear ring are located on the same horizontal axis, and the clamping pipe limiting ring and the gear ring are parallel and spaced.

[0020] The clamping pipe arm and the clamping pipe wheel are four, and the four clamping pipe arms are slidingly filled in the spaced space of the clamping pipe limiting ring and the gear ring, and the four clamping pipe arms are annularly and equidistantly distributed, the mutually close end heads of the four clamping pipe arms are exposed in the inner ring area of the clamping pipe limiting ring and the gear ring, and the mutually close end heads of the four clamping pipe arms are rotatably provided with clamping pipe wheels.

[0021] The clamping pipe limiting ring is provided with four groups of annularly and equidistantly distributed limiting straight grooves, the distribution positions of the clamping pipe limiting ring and the distribution positions of the clamping pipe arm one-to-one correspond, and the adjacent two groups of limiting straight grooves and the adjacent two clamping pipe arms are mutually perpendicular, the side end head of the clamping pipe arm close to the clamping pipe limiting ring is fixedly connected with a limiting clamp head, and the limiting clamp head on each clamping pipe arm is correspondingly clamped at one end of the limiting straight groove close to the inner ring.

[0022] Preferably, the four clamping pipe wheels are vertically close to the outer surface of the heat preservation cup blank pipe, and can rotate with the advancement of the heat preservation cup blank pipe.

[0023] Preferably, the concentric positioning structure further comprises a flange plate, a servo motor I and a driving pinion, the side surface of the pipe clamping limiting ring is fixedly provided with an integrated flange plate, a driving pinion is rotatably installed on the flange plate and is flushly engaged with the gear ring, a servo motor I is fixedly installed on the side surface outer wall of the flange plate away from the driving pinion, and the output shaft of the servo motor I is fixedly connected with the driving pinion;

[0024] The gear ring is provided with four groups of transmission arc grooves in a ring shape on the ring end surface close to the pipe clamping limiting ring, and the two ends of the transmission arc grooves are close to the outer ring and the inner ring of the gear ring, respectively, a transmission clamping head aligned with the limiting clamping head is fixedly connected to one side end of the pipe clamping arm close to the gear ring, and the transmission clamping head on each pipe clamping arm is correspondingly clamped at one end of the transmission arc groove close to the inner ring.

[0025] The maximum width of the whole concentric positioning structure is less than the inner diameter of the rotating ring.

[0026] Preferably, the center of the base ring, the rotating ring, the pipe clamping limiting ring and the gear ring in the pipe clamping rotating structure is located on the same horizontal line with the center of the feeding air window, the center groove is located between the discharging rectangular groove and the guide rail opening groove, and the horizontal midlines of the machining platform, the center groove, the discharging rectangular groove and the guide rail opening groove are located on the same vertical plane.

[0027] Preferably, the guide rail group comprises guide rail horizontal plates, limiting guide rail grooves, a servo motor II and a guide rail screw, two groups of parallel guide rail horizontal plates are fixedly installed on the outer side wall of the cup blank laser cutting machine corresponding to the ports on both sides of the guide rail opening groove, the spacing width of the two side guide rail horizontal plates is consistent with the opening width of the guide rail opening groove, the mutually close side walls of the two side guide rail horizontal plates are flush with the two side inner walls of the guide rail opening groove, the two side inner walls of the guide rail opening groove and the mutually close side walls of the two side guide rail horizontal plates are provided with limiting guide rail grooves aligned and communicated, a guide rail screw is rotatably installed between the two end inner walls of one side limiting guide rail groove, a limiting horizontal shaft is fixedly installed in the other side limiting guide rail groove, a servo motor II is fixedly installed on the end side of the guide rail horizontal plate where the guide rail screw is installed, and the output shaft of the servo motor II is fixedly connected with the guide rail screw penetrating through the end side surface of the guide rail horizontal plate.

[0028] Horizontal displacement horizontal plates are slidingly clamped in the two side limiting guide rail grooves, and the two ends of the displacement horizontal plate are threadedly sleeved and slidingly sleeved with the guide rail screw and the limiting horizontal shaft in the two side limiting guide rail grooves, respectively, and a vertical base plate for setting a pipe clamping advancing mechanism is fixedly installed at the top center of the displacement horizontal plate.

[0029] Preferably, the pipe clamping advancing mechanism comprises a quasi-center circular plate, a V-shaped pipe clamping plate, a connecting horizontal plate and a T-shaped limiting clamping plate, the top end of the vertical base plate is fixedly installed with a quasi-center circular plate, and the axis of the quasi-center circular plate is located on the same horizontal line with the center of the feeding air window.

[0030] The quasi-center circle plate is provided with a T-shaped sliding groove with two open sides on the circular end surface of the pipe clamping rotating structure, and the T-shaped sliding groove is located on the transverse center line of the circular end surface of the quasi-center circle plate;

[0031] The number of the V-shaped pipe clamping plates is two, and the two V-shaped pipe clamping plates are mutually symmetrical and form a V-shaped opening with the opening sides opposite to each other, the centers of the inscribed circles formed by the inclined inner walls of the two V-shaped pipe clamping plates are located on the same horizontal line as the axis of the quasi-center circle plate and the center of the feeding air window;

[0032] The middle part of the end side of each of the two V-shaped pipe clamping plates is fixedly provided with an integrated connecting horizontal plate, the outer side surface of each of the two connecting horizontal plates is flush with the end side of the V-shaped pipe clamping plate and is fixedly provided with a T-shaped limiting clamping plate matched with the T-shaped sliding groove, the two V-shaped pipe clamping plates are slidably clamped in the T-shaped sliding groove of the quasi-center circle plate through the T-shaped limiting clamping plates at the end sides, and the cross sections of the T-shaped limiting clamping plates and the T-shaped sliding groove are both horizontally arranged T-shaped.

[0033] The circular end surface of the quasi-center circle plate away from the V-shaped pipe clamping plate is fixedly provided with an electric cylinder at the center, and the piston shaft of the electric cylinder is away from the quasi-center circle plate and is fixedly connected with a driving plate.

[0034] The length of the driving plate is less than the total length of the two connecting horizontal plates, and the opposite end heads of the two connecting horizontal plates protrude from the end heads of the T-shaped limiting clamping plates, and the two ends of the driving plate and the opposite end heads of the two connecting horizontal plates are both hingedly provided with an inclined force arm rod.

[0035] Preferably, a plurality of protruding surface pipe clamping rollers are embeddedly arranged in the inner wall of the V-shaped pipe clamping plate, and the plurality of pipe clamping rollers are parallelly attached to the outer surface of the heat preservation cup blank pipe and can rotate with the heat preservation cup blank pipe.

[0036] Preferably, the cup blank laser cutting machine is provided with a cabinet door which is hingedly arranged on the front side of the hollow interior, and the hollow interior is filled with a storage box, the feeding rectangular groove is in through communication with the hollow interior, and the side of the feeding rectangular groove away from the pipe clamping rotating structure is hingedly provided with a receiving plate, the hinged part of the receiving plate and the feeding rectangular groove is fixedly provided with a torsion spring, the outer surface of the receiving plate is covered with a rubber cushion, and the free end of the receiving plate is downwardly inclined and extends to the hollow interior of the cup blank laser cutting machine and is located below the central groove.

[0037] Compared with the prior art, the present application provides a heat preservation cup blank separation device based on laser cup separation, which has the following advantages:

[0038] Improve clamping concentricity and ensure cutting trajectory accuracy: The device realizes four-point synchronous clamping of the blank pipe through the concentric positioning assembly in the pipe clamping rotating structure. The four pipe clamping arms are equally distributed in a ring shape. The linkage design of the gear ring and the transmission arc groove can drive the pipe clamping wheel to uniformly close from the circumferential direction, ensuring that the coaxiality error of the blank pipe axis and the center of the rotating ring is within 0.05 mm. This concentric positioning method effectively solves the eccentricity problem of traditional double-sided clamping, so that the fixed beam of the laser cutting head can form a perfect circular trajectory on the surface of the blank pipe, and the cutting inclination error is reduced to below 0.02 mm, completely eliminating the subsequent leveling process and reducing processing costs.

[0039] Realize motion coordination without interference and improve processing efficiency: The device designs the rolling characteristics of the pipe clamping wheel and the pipe clamping roller to build a rotating and feeding double-motion independent mechanism. When the pipe clamping rotating structure drives the blank pipe to rotate axially, the pipe clamping roller of the pipe clamping advancing mechanism rotates synchronously with the blank pipe to avoid rotation resistance. When the guide rail group drives the blank pipe to feed laterally, the pipe clamping wheel of the pipe clamping rotating structure rotates with the blank pipe to eliminate feeding resistance. This design allows independent and accurate adjustment of the rotation speed and feeding speed of the blank pipe, completely solving the motion interference problem of traditional equipment, improving the continuous cutting efficiency of a single blank pipe, and adapting to the processing needs of blank pipes of different wall thicknesses.

[0040] Optimize the unloading buffer protection and improve the qualified rate of finished products: The torsional spring buffer and rubber cushion double design of the receiving plate in the gathering mechanism build a hierarchical buffer system. When the cut blank section falls onto the receiving plate, the torsional spring absorbs the impact force through elastic deformation, and the rubber cushion further weakens the residual impact force, reducing the falling speed of the blank section. At the same time, the inclined angle of the receiving plate ensures that the blank section smoothly slides into the storage box along the preset trajectory, avoiding mutual collision between pipe sections. This design effectively solves the damage problem of traditional unloading, reduces the defect rate of surface scratches and pits of finished products, improves the qualified rate, and reduces the labor and material costs of surface repair.

[0041] Strengthen the adaptability and continuous processing capacity of the structure: The V-shaped pipe clamping plate and adjustable clamping mechanism of the device can adapt to blank pipes of different diameters, eliminating the need to replace clamping components for multiple model processing, reducing equipment changeover time, and supporting continuous multi-section cutting of a single blank pipe. With the quick opening and closing design of the clamping mechanism, the continuous processing interval time of the device is shortened to within 3 seconds. This adaptability and continuity design allows the device to meet the dual production needs of small-batch multi-specification and large-batch single-specification, significantly improving the flexibility of the production line. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 The structure diagram of the present application;

[0043] Figure 2 The cup blank laser cutting machine cross-sectional view of the present applicationFigure 1

[0044] Figure 3 Cutaway view of cup base laser cutting machine of the present invention Figure 2

[0045] Figure 4 Schematic diagram of the pipe clamping rotating structure of the present invention

[0046] Figure 5 Schematic diagram of the rotating structure of the present invention

[0047] Figure 6 Schematic diagram of the base ring structure of the present invention

[0048] Figure 7 Schematic diagram of the concentric positioning structure of the present invention

[0049] Figure 8 Exploded schematic diagram of the concentric positioning structure of the present invention

[0050] Figure 9 Cutaway view of the pipe clamping limiting ring and gear ring connection of the present invention

[0051] Figure 10 Schematic diagram of the guide rail group structure of the present invention

[0052] Figure 11 Schematic diagram of the pipe clamping pushing mechanism of the present invention

[0053] Figure 12 Exploded schematic diagram of the pipe clamping pushing mechanism of the present invention

[0054] Figure 13 Cutaway view of the pipe clamping limiting ring and gear ring connection of the present invention

[0055] ​​In the figure: 1, cup blank laser cutting machine; 2, processing platform; 3, laser cutting part; 4, feeding air window; 5, center groove; 6, pipe clamping rotating structure; 7, blanking rectangular groove; 8, guide rail opening groove; 9, guide rail group; 10, pipe clamping advancing mechanism; 11, base ring; 12, base piece; 13, driving wheel; 14, micro servo motor; 15, clamping ring limiting piece; 16, hemispherical groove; 17, spherical rotor; 18, rotating ring; 19, connecting piece; 20, pipe clamping limiting ring; 21, circular arc plate; 22, gear ring; 23, clamping tooth bending piece; 24, limiting ring groove; 25, pipe clamping arm; 26, pipe clamping wheel; 27, limiting clamp; 28, limiting straight groove; 29, transmission clamp; 30, transmission arc groove; 31, convex edge plate; 32, servo motor one; 33, driving pinion; 34, material receiving plate; 35, storage box; 36, cabinet door; 37, guide rail cross plate; 38, limiting guide rail groove; 39, servo motor two; 40, displacement cross plate; 41, vertical base plate; 42, centering circle plate; 43, V-shaped pipe clamping plate; 44, connecting cross plate; 45, T-shaped limiting clamping plate; 46, T-shaped sliding groove; 47, electric cylinder; 48, driving plate; 49, force arm rod; 50, pipe clamping roller. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0057] Please refer to Figures 1-13 A heat preservation cup blank separation device based on laser cup separation, comprising:

[0058] The cup blank laser cutting machine 1 is provided with a laser cutting part 3 containing a laser cutting head at the top, the middle part of the cup blank laser cutting machine 1 is provided with an open processing platform 2 below the laser cutting part 3, and the inside of the cup blank laser cutting machine 1 corresponding to below the processing platform 2 is hollow, the side of the cup blank laser cutting machine 1 is provided with a feeding air window 4 communicating with the processing platform 2, the processing platform 2 is provided with a guide rail opening groove 8 leading to the feeding air window 4, and the bottom middle part of the guide rail opening groove 8 corresponding to the feeding air window 4 is open;

[0059] The pipe clamping rotating structure 6 is arranged at the middle of the processing platform 2, the pipe clamping rotating structure 6 is composed of a concentric positioning structure one and a rotating structure, the concentric positioning structure is used for clamping and fixing the to-be-cut end of the heat preservation cup blank pipe, wherein the concentric positioning structure is assembled in the rotating structure to make the heat preservation cup blank pipe have axial rotation freedom, and the overall transverse axis of the pipe clamping rotating structure 6 is perpendicular to the vertical axis of the laser cutting head in the laser cutting part 3.

[0060] A blanking rectangular slot 7 is arranged directly below the laser cutting head in the laser cutting part 3 and at one side of the pipe clamping rotating structure 6, and a material gathering mechanism is arranged in and below the blanking rectangular slot 7 for collecting and taking out the cut and separated blank, wherein the blanking rectangular slot 7 and the guide rail opening slot 8 are arranged at opposite sides of the pipe clamping rotating structure 6;

[0061] A pipe clamping advancing mechanism 10 is arranged outside the cup blank laser cutting machine 1 and the overall axis of the pipe clamping advancing mechanism 10 is arranged on the same horizontal line as the overall axis of the pipe clamping rotating structure 6, and the guide rail group 9 extending outward through the feeding air window 4 is arranged on the processing platform 2, the pipe clamping advancing mechanism 10 is slidingly arranged on the guide rail group 9, and the pipe clamping advancing mechanism 10 is used for clamping and fixing the outermost end of the heat preservation cup blank pipe and enabling the heat preservation cup blank pipe to have a transverse displacement degree of freedom along the lengthwise center line of the processing platform 2;

[0062] The heat preservation cup blank pipe has an axial rotation degree of freedom in the pipe clamping advancing mechanism 10, and has a transverse displacement degree of freedom in the pipe clamping rotating structure 6.

[0063] Further, the rotating structure in the pinch tube rotating structure 6 includes a base ring 11, a driving wheel 13, a micro servo motor 14, a clamping ring limiting piece 15, and a rotating ring 18. A central groove 5 is formed in the middle of the processing platform 2. An integrated base piece 12 is fixedly arranged at the bottom end of the base ring 11 and is fixedly installed at the center of the bottom inner wall of the central groove 5. At least four groups of driving wheels 13 are rotatably installed on one side ring end face of the base ring 11, and the multiple groups of driving wheels 13 are annularly and equidistantly distributed. A micro servo motor 14 is fixedly installed at a position corresponding to each group of driving wheels 13 on the other side ring end face of the base ring 11, and the output shaft of each micro servo motor 14 penetrates the outer side face of the base ring 11 and is fixedly connected to each group of driving wheels 13 one by one. The rotating ring 18 is rotatably clamped in the multiple groups of driving wheels 13. The multiple groups of driving wheels 13 are in close contact with the outer ring face of the rotating ring 18. The center of the rotating ring 18 and the base ring 11 are located on the same horizontal axis, and a concentric positioning structure is arranged in the rotating ring 18. The clamping ring limiting pieces 15 clamping the two sides of the rotating ring 18 are fixedly installed on the ring end face of the base ring 11. The two clamping ring limiting pieces 15 are symmetrical to each other and have arc-shaped inner surfaces adapted to the rotating ring 18. The cross section of the clamping ring limiting piece 15 is horizontally L-shaped. The operation of the rotating structure is triggered by the clamping of the blank tube by the concentric positioning structure. After receiving the control system signal, the micro servo motor 14 is synchronously started. The output shaft drives the driving wheel 13 to rotate around its own axis. Because the multiple groups of driving wheels 13 are annularly and equidistantly distributed and closely contact with the outer ring face of the rotating ring 18, the frictional force forms uniform circumferential driving force, which drives the rotating ring 18 to stably rotate around the center of the base ring 11. The integrated design of the base piece 12 and the base ring 11 enables the base ring 11 to be rigidly fixed through the central groove 5, avoiding overall deviation during rotation. The clamping ring limiting piece 15 with horizontally L-shaped cross section is clamped between the driving wheel 13 and the clamping ring limiting piece 15 through the double limiting structure of the horizontal section fitting the end face of the rotating ring 18 and the vertical section fitting the side face of the rotating ring 18, which provides axial positioning for the rotating ring 18 and prevents it from moving along the axis, without hindering the circumferential movement of the rotating ring 18. The core function of the structure is to accurately convert the power of the micro servo motor 14 into stable rotation of the rotating ring 18, which in turn drives the concentric positioning structure and the blank tube to rotate synchronously, providing uniform and stable movement trajectory for the laser annular cutting.

[0064] Further, the base ring 11 and the clamping ring limiting piece 15 are opposite and parallel to the ring end face and the circular arc inner wall, and a plurality of semispherical grooves 16 are arranged on the ring end face and the circular arc inner wall, and a spherical rotor 17 with a convex surface is embedded in each semispherical groove 16, the spherical rotor 17 has a universal rotation degree of freedom, and the spherical rotor 17 on the base ring 11 and the spherical rotor 17 on the clamping ring limiting piece 15 respectively abut the two side ring end faces of the rotating ring 18; when the rotating ring 18 rotates under the driving of the driving wheel 13, the ring end face of the rotating ring 18 will generate a tangential force on the spherical rotor 17, driving the spherical rotor 17 to rotate synchronously, thereby converting the sliding friction between the rotating ring 18 and the base ring 11 and the clamping ring limiting piece 15 into rolling friction, effectively reducing the rotation resistance and component wear, prolonging the service life of the rotating structure. At the same time, the spherical rotors 17 distributed on the base ring 11 and the clamping ring limiting piece 15 form bidirectional support, accurately limiting the axial position of the rotating ring 18.

[0065] Further, the concentric positioning structure comprises a clamping pipe limiting ring 20, a gear ring 22, clamping pipe arms 25 and clamping pipe wheels 26, the inner diameters of the base ring 11 and the rotating ring 18 are the same and larger than the outer diameter of the clamping pipe limiting ring 20, the top end and the bottom end of the clamping pipe limiting ring 20 are fixedly provided with integrated circular arc plates 21, the circular arc plates 21 are arc-shaped and perpendicular to the clamping pipe limiting ring 20, the top end and the bottom end of the inner ring surface of the rotating ring 18 are fixedly provided with integrated connecting pieces 19, and the opposite end faces of the two groups of connecting pieces 19 are fixedly connected with the two groups of circular arc plates 21 of the clamping pipe limiting ring 20, respectively; the center of the clamping pipe limiting ring 20 and the center of the rotating ring 18 are located on the same horizontal axis; the inner diameters of the clamping pipe limiting ring 20 and the gear ring 22 are the same, the arc end sides of the two groups of circular arc plates 21 away from the clamping pipe limiting ring 20 are fixedly provided with integrated clamping tooth bending pieces 23, and the two groups of clamping tooth bending pieces 23 are symmetrical to each other, the end heads of the two groups of clamping tooth bending pieces 23 close to each other are fixedly provided with integrated arc-shaped bending parts, and the clamping tooth bending pieces 23 are L-shaped in cross section; one side ring end face of the gear ring 22 is provided with a limiting ring groove 24 matched with the arc-shaped bending part of the clamping tooth bending piece 23, and the gear ring 22 is clamped with the arc-shaped bending part of the two groups of clamping tooth bending pieces 23 through the limiting ring groove 24, the centers of the clamping pipe limiting ring 20 and the gear ring 22 are located on the same horizontal axis, and the clamping pipe limiting ring 20 and the gear ring 22 are parallel and spaced; the clamping pipe arms 25 and the clamping pipe wheels 26 are four, the four clamping pipe arms 25 are slidingly filled in the spacing space of the clamping pipe limiting ring 20 and the gear ring 22, the four clamping pipe arms 25 are annularly and equidistantly distributed, the end heads of the four clamping pipe arms 25 close to each other are exposed in the inner ring area of the clamping pipe limiting ring 20 and the gear ring 22, and the end heads of the four clamping pipe arms 25 close to each other are rotatably provided with the clamping pipe wheels 26; the clamping pipe limiting ring 20 is provided with four groups of annularly and equidistantly distributed limiting straight grooves 28, the distribution positions of the clamping pipe limiting ring 20 correspond to the distribution positions of the clamping pipe arms 25 one by one, and the two groups of limiting straight grooves 28 and the two adjacent clamping pipe arms 25 are perpendicular to each other, the side end head of the clamping pipe arm 25 close to the clamping pipe limiting ring 20 is fixedly connected with a limiting clamp head 27, and the limiting clamp head 27 on each clamping pipe arm 25 is clamped at one end of the limiting straight groove 28 close to the inner ring; the core operation logic of the concentric positioning structure is that the gear ring 22 rotates to drive the clamping pipe arms 25 to move radially synchronously, and the assembly and operation process are closely connected: firstly, the clamping pipe limiting ring 20 and the rotating ring 18 are fixed through the connecting pieces 19 to ensure that they rotate synchronously; then the arc-shaped bending part of the clamping tooth bending piece 23 is clamped with the limiting ring groove 24 of the gear ring 22, so that the gear ring 22 can rotate around the center of the clamping pipe limiting ring 20, and the clamping tooth bending piece 23 with L-shaped cross section can limit the axial displacement of the gear ring 22 to avoid its disengagement. The sliding space of the clamping pipe arm 25 is provided by the spacing space of the clamping pipe limiting ring 20 and the gear ring 22, and the annular equidistant and adjacent vertical distribution of the four clamping pipe arms 25 can make the blank pipe receive uniform clamping force.When the gear ring 22 rotates, the limit straight groove 28 cooperates with the limit clamp head 27 to limit the movement direction of the pipe clamping arm 25, so that it can only move radially, avoiding the pipe clamping arm 25 rotating with the gear ring 22, and ensuring that the four pipe clamping arms 25 are synchronized to close or open. The rotating installation design of the pipe clamping wheel 26 enables it to rotate with the movement of the blank pipe when the blank pipe is transversely pushed, converting sliding friction of the clamping surface into rolling friction, avoiding scratching the outer surface of the blank pipe, and reducing the feeding resistance of the blank pipe.

[0066] Further, the four pipe clamping wheels 26 vertically adhere to the outer surface of the cup blank pipe and can rotate with the transverse movement of the cup blank pipe; the pipe clamping wheel 26 can be made of high-hardness rubber material and forms a surface contact with the outer surface of the cylindrical blank pipe, which improves the clamping stability and avoids damaging the blank pipe. When the guide rail group 9 drives the blank pipe to transversely advance, the relative sliding between the blank pipe and the pipe clamping wheel 26 will generate friction, driving the pipe clamping wheel 26 to rotate around its own axis. This rotation characteristic reduces the resistance of the pipe clamping wheel 26 to the blank pipe from sliding friction to rolling friction, ensuring that the blank pipe can move smoothly under smaller pushing force and reducing the load of the servo motor 39. At the same time, the vertical adhesion design of the four pipe clamping wheels 26 enables the clamping force on the blank pipe to be evenly distributed in the circumferential direction, avoiding deformation of the blank pipe due to excessive local pressure; and the rotation synchronization of the pipe clamping wheel 26 can indirectly reflect the feeding accuracy of the blank pipe. If a pipe clamping wheel 26 rotates abnormally, it can prompt that there is an eccentricity or jam problem in the blank pipe, providing a basis for equipment operation monitoring. In addition, the rotation direction of the pipe clamping wheel 26 is consistent with the pushing direction of the blank pipe, which does not generate reverse resistance to the feeding of the blank pipe, ensuring smooth connection of the combined movement of rotary cutting and transverse feeding.

[0067] Further, the concentric positioning structure further comprises a convex edge plate 31, a servo motor 32 and a driving pinion 33. The side surface of the pipe clamping limiting ring 20 is fixedly provided with an integrated convex edge plate 31, and the convex edge plate 31 is rotatably provided with a driving pinion 33 which is flush with the gear ring 22. The side surface of the convex edge plate 31 away from the driving pinion 33 is fixedly provided with a servo motor 32, and the output shaft of the servo motor 32 is fixedly connected with the driving pinion 33. The ring end surface of the gear ring 22 close to the pipe clamping limiting ring 20 is provided with four groups of transmission arc grooves 30 which are annularly distributed, and the two ends of the transmission arc grooves 30 are close to the outer ring and the inner ring of the gear ring 22 respectively. The side end of the gear ring 22 close to the pipe clamping arm 25 is fixedly connected with a transmission clamping head 29 which is aligned with the limiting clamping head 27, and the transmission clamping head 29 on each pipe clamping arm 25 is correspondingly clamped at one end of the transmission arc groove 30 close to the inner ring. The overall maximum width of the concentric positioning structure is less than the inner diameter of the rotating ring 18. The servo motor 32 is started after receiving the blank pipe positioning signal, and the output shaft drives the driving pinion 33 to rotate. The driving pinion 33 drives the gear ring 22 to rotate around its own axis through gear meshing. The transmission arc groove 30 adopts an arc gradually changing design, and the contact surface between the groove wall and the transmission clamping head 29 is a smooth arc surface. When the gear ring 22 rotates, the groove wall of the transmission arc groove 30 will generate a radial force on the transmission clamping head 29. If the gear ring 22 rotates clockwise, the transmission arc groove 30 will push the transmission clamping head 29 to move towards the center, driving the pipe clamping arm 25 to move close to each other to realize clamping. If the gear ring 22 rotates counterclockwise, the transmission arc groove 30 will pull the transmission clamping head 29 to move outward to realize loosening. The convex edge plate 31 provides installation support for the servo motor 32 and the driving pinion 33, and the integrated design of the convex edge plate 31 and the pipe clamping limiting ring 20 ensures the meshing accuracy of the driving pinion 33 and the gear ring 22, avoiding the problem of clamping lag caused by too large gear meshing gap. The design that the overall maximum width of the concentric positioning structure is less than the inner diameter of the rotating ring 18 is to avoid interference between the concentric positioning structure and the inner wall of the rotating ring 18.

[0068] Further, the centers of the base ring 11, the rotating ring 18, the pipe clamping limiting ring 20 and the gear ring 22 in the pipe clamping rotating structure 6 are located on the same horizontal line with the center of the feeding empty window 4, the center groove 5 is located between the blanking rectangular groove 7 and the guide rail opening groove 8, and the horizontal midlines of the machining platform 2, the center groove 5, the blanking rectangular groove 7 and the guide rail opening groove 8 are located on the same vertical plane; the movement coordination of each structure of the equipment is ensured, and the operation preciseness is reflected in that the centers of all the ring structures are aligned with the center of the feeding empty window 4, so that after the blank pipe enters from the feeding empty window 4, it can directly extend into the clamping area of the pipe clamping rotating structure 6 along a straight line without the need for secondary position adjustment, thereby reducing the feeding error; the horizontal midlines of the machining platform 2, the center groove 5 and other structures are coplanar, which ensures that the horizontal feeding track of the blank pipe coincides with the midline of the machining platform 2, thereby avoiding the deviation of the blank pipe during feeding. From the operation effect, this alignment design makes the vertical axis of the laser cutting head exactly intersect the horizontal axis of the blank pipe at the cutting point, thereby ensuring that the laser beam accurately acts on the position to be cut and avoiding the inclination of the cutting surface due to the deviation of the axis. At the same time, the design of the location of the center groove 5 between the blanking rectangular groove 7 and the guide rail opening groove 8 not only provides space for the installation of the base ring 11, but also enables the cut blank pipe to directly fall into the blanking rectangular groove 7 below, thereby avoiding being blocked by other structures and ensuring smooth blanking. In addition, this layout makes the feeding direction of the guide rail group 9 completely consistent with the axis of the blank pipe, thereby further improving the feeding accuracy.

[0069] Further, the guide rail group 9 comprises guide rail cross plates 37, limiting guide rail grooves 38, servo motor two 39 and guide rail screws. Two groups of parallel guide rail cross plates 37 are fixedly installed on the outer side wall of the cup blank laser cutting machine 1 corresponding to the two sides of the port of the guide rail opening groove 8. The spacing width of the two sides of the guide rail cross plate 37 is consistent with the opening width of the guide rail opening groove 8. The mutually close side walls of the two sides of the guide rail cross plate 37 are aligned with the two sides of the inner wall of the guide rail opening groove 8. The two sides of the inner wall of the guide rail opening groove 8 and the mutually close side walls of the two sides of the guide rail cross plate 37 are provided with aligned and communicated limiting guide rail grooves 38. The guide rail screws are rotatably installed between the two ends of the inner wall of one side of the limiting guide rail groove 38. The limiting horizontal shaft is fixedly installed in the other side of the limiting guide rail groove 38. The servo motor two 39 is fixedly installed on the end side of the guide rail cross plate 37 where the guide rail screw is installed, and the output shaft of the servo motor two 39 is fixedly connected with the guide rail screw penetrating through the end side of the guide rail cross plate 37. The horizontal displacement cross plate 40 is slidingly connected in the two sides of the limiting guide rail groove 38, and the two ends of the displacement cross plate 40 are respectively threadedly connected with the guide rail screw and the limiting horizontal shaft in the two sides of the limiting guide rail groove 38. The vertical base plate 41 for setting the pipe clamping and advancing mechanism 10 is fixedly installed at the top center of the displacement cross plate 40. After receiving the feeding signal, the servo motor two 39 drives the guide rail screw to rotate clockwise or counterclockwise. Since one end of the displacement cross plate 40 is threadedly connected with the guide rail screw and the other end is slidingly connected with the limiting horizontal shaft, the rotational movement of the guide rail screw is converted into the linear movement of the displacement cross plate 40 through thread transmission. When rotating clockwise, the displacement cross plate 40 moves towards the equipment direction (feeding), and when rotating counterclockwise, it moves outward (material returning). The design that the width of the guide rail cross plate 37 is consistent with the width of the guide rail opening groove 8 and the inner wall is flush makes the limiting guide rail groove 38 form a continuous guide channel, avoiding the jamming of the displacement cross plate 40 during movement. The guide rail screw adopts high-precision ball screw, which cooperates with the guiding action of the limiting horizontal shaft to make the feeding accuracy of the displacement cross plate 40 reach ±0.01mm, meeting the requirements of laser cutting on feeding accuracy. The fixing connection between the vertical base plate 41 and the displacement cross plate 40 adopts bolt fastening, ensuring that the pipe clamping and advancing mechanism 10 does not shake relatively when moving synchronously with the displacement cross plate 40. The functional effect of this structure is reflected in two aspects: one is that through the cooperation of the servo motor two 39 and the ball screw, the accurate control of the feeding length of the blank pipe is realized, which can adapt to the cutting needs of different height vacuum cups; the other is that through double-sided guidance, the displacement cross plate 40 moves stably, avoiding the eccentricity or vibration of the blank pipe during feeding, and ensuring the cutting quality.

[0070] Further, the pinch tube pushing mechanism 10 comprises a quasi-center circle plate 42, a V-shaped pinch tube plate 43, a connecting horizontal plate 44 and a T-shaped limiting clamping plate 45. The quasi-center circle plate 42 is fixedly installed at the top end of the vertical base plate 41, and the axis of the quasi-center circle plate 42 is located on the same horizontal line as the center of the feeding air window 4. The quasi-center circle plate 42 is provided with two T-shaped sliding grooves 46 with open sides on the circular end face thereof facing the circular end face of the pinch tube rotating structure 6, and the T-shaped sliding grooves 46 are located on the horizontal center line of the circular end face of the quasi-center circle plate 42. The two V-shaped pinch tube plates 43 are symmetrical to each other and form a V-shaped opening. The centers of the inscribed circles formed by the inclined inner walls of the two V-shaped pinch tube plates 43 are located on the same horizontal line as the axis of the quasi-center circle plate 42 and the center of the feeding air window 4. An integrated connecting horizontal plate 44 is fixedly arranged at the middle of the end side of each of the two V-shaped pinch tube plates 43. The outer side of each of the two connecting horizontal plates 44 is flush with the end side of the V-shaped pinch tube plate 43 and is fixedly provided with a T-shaped limiting clamping plate 45 matched with the T-shaped sliding groove 46. The two V-shaped pinch tube plates 43 are slidably clamped in the T-shaped sliding groove 46 of the quasi-center circle plate 42 through the T-shaped limiting clamping plate 45 at the end side thereof. The cross sections of the T-shaped limiting clamping plate 45 and the T-shaped sliding groove 46 are both horizontally arranged T-shaped. The electric cylinder 47 is fixedly installed at the center of the circular end face of the quasi-center circle plate 42 away from the V-shaped pinch tube plate 43. The piston shaft of the electric cylinder 47 is fixedly connected with a driving plate 48 away from the quasi-center circle plate 42. The length of the driving plate 48 is less than the total length of the two connecting horizontal plates 44. The opposite end heads of the two connecting horizontal plates 44 protrude from the end heads of the T-shaped limiting clamping plates 45. The two ends of the driving plate 48 and the opposite end heads of the two connecting horizontal plates 44 are both hingedly connected with inclined force arm rods 49. When the piston shaft of the electric cylinder 47 is extended, the driving plate 48 is pushed to move away from the quasi-center circle plate 42. The driving plate 48 pulls the two connecting horizontal plates 44 to move close to each other through the force arm rods 49. The connecting horizontal plates 44 drive the T-shaped limiting clamping plates 45 to slide in the T-shaped sliding grooves 46, so that the two V-shaped pinch tube plates 43 are synchronously closed to pinch the blank tube. When the piston shaft is retracted, the driving plate 48 moves towards the quasi-center circle plate 42. The force arm rods 49 push the connecting horizontal plates 44 to separate, and the V-shaped pinch tube plates 43 are opened to release the blank tube. The alignment of the axis of the quasi-center circle plate 42 ensures that the axis of the blank tube coincides with the center of the feeding air window 4 after the V-shaped pinch tube plates 43 pinch the blank tube, which lays a foundation for the subsequent feeding accuracy. The clearance fit of the T-shaped sliding groove 46 and the T-shaped limiting clamping plate 45 ensures smooth sliding of the V-shaped pinch tube plates 43 and avoids shaking of the V-shaped pinch tube plates 43 during pinching. The V-shaped angle of the V-shaped pinch tube plate 43 is designed to be 45-75°, which can adapt to blank tubes of different specifications in diameter range. The contact area between the multiple pinch tube rollers 50 on the inclined inner wall of the V-shaped pinch tube plate 43 and the outer surface of the blank tube is large, which can disperse the pinching force and avoid deformation of the blank tube. The hinge connection of the driving plate 48 and the force arm rod 49 can adjust the angle of the force arm rod 49 according to the movement of the connecting horizontal plate 44, which ensures the synchronization of the movement of the two V-shaped pinch tube plates 43 and realizes the centering and pinching of the blank tube.While achieving the fixing of the outer end of the blank tube, the centering design and T-shaped guide structure of the V-shaped clamping plate 43 ensure that the axis of the blank tube is always consistent with the feeding direction, providing a guarantee for precise feeding.

[0071] Further, the inner wall of the V-shaped clamping plate 43 is embedded with multiple clamping rollers 50 with protruding surfaces, and the multiple clamping rollers 50 are parallel to the outer surface of the cup blank tube and can rotate with the axial rotation of the cup blank tube; the axis of the clamping roller 50 is parallel to the axis of the blank tube, and the outer surface is covered with a wear-resistant silica gel layer, which not only improves the friction with the blank tube but also avoids scratching the blank tube. When the clamping rotating structure 6 drives the axial rotation of the blank tube, the friction between the blank tube and the clamping roller 50 will drive the clamping roller 50 to rotate around its own axis. This self-rotation feature converts the sliding friction between the two into rolling friction, reducing the friction resistance from sliding friction to rolling friction, effectively reducing the resistance of the blank tube when rotating and reducing the load of the micro servo motor 14. At the same time, the protruding height of the clamping roller 50 is designed to be 2mm, ensuring that it is tightly attached to the outer surface of the blank tube. Even if there is a small protrusion on the outer surface of the blank tube, the clamping roller 50 can adapt to it by rotating itself, avoiding damage to the blank tube caused by excessive local pressure. In addition, the parallel distribution of the clamping roller 50 ensures the stability of the blank tube when rotating, avoiding the eccentric rotation of the blank tube caused by the deviation of the roller axis, and further ensuring the accuracy of the annular trajectory of the laser cutting.

[0072] Further, the material gathering mechanism includes a receiving plate 34 and a storage box 35, the cup blank laser cutting machine 1 is provided with a double-leaf cabinet door 36 corresponding to the front side of the lower hollow interior, and the hollow interior is filled with the storage box 35, the downcomer rectangular groove 7 is in through communication with the hollow interior, and the downcomer rectangular groove 7 is hinged with the receiving plate 34 on the side away from the pipe clamping and rotating structure 6, a torsional spring is fixedly arranged at the hinge of the receiving plate 34 and the downcomer rectangular groove 7, the outer surface of the receiving plate 34 is covered with a rubber cushion, the free end of the receiving plate 34 is downwardly inclined and extends to the hollow interior of the cup blank laser cutting machine 1 and is located below the central groove 5; after the laser cutting is completed, the separated blank section falls under the action of gravity, first collides with the rubber cushion surface of the receiving plate 34; the receiving plate 34 rotates downward around the hinge point under the impact force of the blank section, and the torsional spring is compressed at the same time, the elastic force of the torsional spring can buffer the falling speed of the blank section, so that the blank section is prevented from being directly impacted on the storage box 35 to cause deformation or damage, the elastic deformation can further absorb the impact force, and the surface of the blank section is prevented from being scratched. The inclination angle of the receiving plate 34 can be designed to be 15-60°, the angle can ensure that the blank section smoothly slides to the storage box 35 under the action of gravity, and can also prevent the blank section from being collided and stacked due to too fast sliding speed. When the blank section slides away from the receiving plate 34, the elastic force of the torsional spring drives the receiving plate 34 to reset, and waits for the falling of the next blank section. The bottom of the storage box 35 is paved with a foam buffer layer, to further protect the blank section; the double-leaf cabinet door 36 is convenient for an operator to regularly take out the blank section, and an observation window is arranged on the cabinet door 36, so that the filling condition of the storage box 35 can be viewed in real time. The function effect of the mechanism is to realize the “buffering-guiding-collecting” integration of the blank section after cutting, solves the problems that the blank is easily damaged and collected in disorder in the traditional downcomer mode, and improves the production efficiency and the qualified rate of finished products.

[0073] Working principle: before the processing starts, the operator places the to-be-cut thermal cup blank tube between the two V-shaped clamping plates 43 of the clamping and pushing mechanism 10, ensuring that the axis of the blank tube is basically aligned with the axis of the centering circle plate 42. Then start the electric cylinder 47 of the clamping and pushing mechanism 10, and the piston shaft of the electric cylinder 47 will move synchronously when it extends or retracts. The two ends of the driving plate 48 fixedly connected with the piston shaft are connected with the force arm rods 49 through the hinge joints respectively, and the driving plate 48 will generate a transverse thrust when it moves, which will be converted into a force to drive the connecting cross plate 44 to move transversely. The outer side of the connecting cross plate 44 is fixedly installed with a T-shaped limiting clamping plate 45, and the end surface of the centering circle plate 42 facing the V-shaped clamping plate 43 is provided with a T-shaped sliding groove 46 matched with the T-shaped limiting clamping plate 45, so that the T-shaped limiting clamping plate 45 is clamped in the T-shaped sliding groove 46, and the connecting cross plate 44 moves to drive the T-shaped limiting clamping plate 45 to slide stably in the T-shaped sliding groove 46 without deviation. The two V-shaped clamping plates 43 connected with the connecting cross plate 44 will gradually approach or separate from each other, and the multiple clamping roller shafts 50 embedded in the inner wall of the V-shaped clamping plate 43 will completely adhere to the outer surface of the thermal cup blank tube by approaching each other. At this time, the electric cylinder 47 stops working, and the outermost end of the blank tube is firmly clamped. In this process, the cooperation of the T-shaped sliding groove 46 and the T-shaped limiting clamping plate 45 ensures the accuracy of the moving direction of the V-shaped clamping plate 43, so that the center of the inscribed circle formed by the two V-shaped clamping plates 43 always keeps the same horizontal line with the axis of the centering circle plate 42 and the center of the subsequent feeding air window 4; and the design of the clamping roller shaft 50 reserves the axial rotation freedom degree for the blank tube, which can rotate synchronously with the blank tube during the subsequent rotation of the blank tube, avoiding hindering the rotation of the blank tube, and also reducing the friction damage to the outer surface of the blank tube.

[0074] After the blank tube outer end clamping is completed, the servo motor two 39 of the guide rail group 9 is started, the output shaft of the servo motor two 39 passes through the end side of the guide rail transverse plate 37, and is fixedly connected with the guide rail screw in the limiting guide rail slot 38, so that the guide rail screw is directly driven to rotate along the axis after the motor is started. The two side guide rail transverse plates 37 of the guide rail group 9 are parallel to each other, the interval width is consistent with the opening width of the guide rail opening slot 8, and the side walls close to the two side guide rail transverse plates 37 are flush with the two side inner walls of the guide rail opening slot 8, so that the connection between the guide rail group 9 and the processing platform 2 is smooth. The two ends of the displacement transverse plate 40 are respectively clamped in the two limiting guide rail slots 38, one end of which is sleeved with the guide rail screw through the thread, and the other end is sleeved with the limiting horizontal shaft in the other limiting guide rail slot 38. When the guide rail screw rotates, the threaded transmission will drive the displacement transverse plate 40 to move along the extension direction of the limiting guide rail slot 38, and due to the limitation of the limiting horizontal shaft, the displacement transverse plate 40 cannot rotate with the guide rail screw, but only can keep horizontal state and slide smoothly. The vertical base plate 41 is fixedly installed at the top center of the displacement transverse plate 40, and the pipe clamping pushing mechanism 10 is fixedly connected with the displacement transverse plate 40 through the vertical base plate 41, so that the pipe clamping pushing mechanism 10 will move synchronously with the displacement transverse plate 40 to the direction close to the cup blank laser cutting machine 1. During the movement, the clamped heat preservation cup blank pipe will pass through the feeding air window 4 on the side of the cup blank laser cutting machine 1, gradually enter the processing platform 2 area, and until the cutting end of the blank pipe is completely inserted into the clamping range of the pipe clamping rotating structure 6. The precise control ability of the servo motor two 39 can ensure that the movement distance of the displacement transverse plate 40 is controllable, so as to realize the precise adjustment of the blank pipe feeding length, and ensure that the cutting position is just below the laser cutting part 3.

[0075] After the blank tube to be cut end is in place, start the servo motor one 32 of the concentric positioning structure in the pipe clamping rotating structure 6, the servo motor one 32 is fixedly installed on the side of the convex edge plate 31 away from the driving pinion 33, its output shaft is directly fixedly connected with the driving pinion 33, so the motor starts and will drive the driving pinion 33 to rotate synchronously.The driving pinion 33 is flush with the gear ring 22 and is in meshing state, this meshing relationship will convert the rotation of the driving pinion 33 into the circumferential rotation of the gear ring 22.The gear ring 22 is stably clamped with the circular-arc-shaped bending part of the upper and lower two sets of clamping tooth bending pieces 23 through the limiting ring groove 24 opened on the side ring end face of the gear ring 22, this clamping mode not only ensures that the gear ring 22 can smoothly rotate around the axis of the pipe clamping limiting ring 20, but also strictly limits the axial position of the gear ring 22, preventing it from deviating during rotation.The clamping tooth bending piece 23 is integrally connected with the circular-arc plate 21, and the circular-arc plate 21 is fixed at the top end and the bottom end of the pipe clamping limiting ring 20, and the pipe clamping limiting ring 20 is fixed with the rotating ring 18 through the connecting piece 19, so the rotation of the gear ring 22 will not drive the pipe clamping limiting ring 20 to move synchronously.Four sets of transmission arc grooves 30 are opened on the ring end face of the gear ring 22 close to the pipe clamping limiting ring 20, and the transmission arc grooves 30 are close to the outer ring and the inner ring of the gear ring 22 at both ends, and the transmission clamping head 29 fixed on the side end head of the pipe clamping arm 25 close to the gear ring 22 is clamped at one end of the transmission arc groove 30 close to the inner ring.When the gear ring 22 rotates, the inner wall of the transmission arc groove 30 will generate a radial thrust on the transmission clamping head 29, pushing the pipe clamping arm 25 to move radially.At the same time, the limiting clamping head 27 close to the pipe clamping limiting ring 20 on one side of the pipe clamping arm 25 is clamped in the limiting straight groove 28 of the pipe clamping limiting ring 20, and the limiting straight groove 28 is linear and corresponds to the distribution position of the pipe clamping arm 25, so that the pipe clamping arm 25 can only move back and forth along the radial direction and cannot rotate.Four pipe clamping arms 25 are distributed in a ring shape at equal intervals and will move towards the center synchronously under the pushing of the transmission arc groove 30, until the pipe clamping wheel 26 rotatably installed at the end of the pipe clamping arm 25 completely adheres to the outer surface of the blank tube of the heat preservation cup to be cut end.At this time, the servo motor one 32 stops working, and the blank tube to be cut end is clamped by the concentric positioning. Since the four pipe clamping arms 25 are distributed in a ring shape at equal intervals, and the pipe clamping limiting ring 20, the gear ring 22 and the rotating ring 18 have the same center, the axis of the blank tube can be ensured to coincide with the axis of the rotating ring 18, providing accurate concentricity guarantee for subsequent ring cutting.At the same time, the pipe clamping wheel 26 can rotate with the transverse movement of the blank tube, avoiding hindering the movement of the blank tube in the subsequent feeding process.

[0076] After the blank tube is clamped and fixed at both ends, the micro servo motor 14 in the clamping and rotating structure 6 is started. The micro servo motor 14 is fixedly installed on the ring end face of the base ring 11 away from the driving wheel 13, and its output shaft penetrates through the outer side face of the base ring 11 and is fixedly connected with the driving wheel 13 one by one, so that after a plurality of micro servo motors 14 are started, the corresponding driving wheels 13 are driven to rotate synchronously. The base ring 11 is fixedly installed on the bottom inner wall of the central groove 5 of the processing platform 2 through the base 12 at the bottom, and its position remains fixed. The driving wheel 13 is rotatably installed on the ring end face of the base ring 11 facing the rotating ring 18, and a plurality of driving wheels 13 are arranged in a ring shape at equal intervals, and the outer surface of the driving wheel 13 is tightly fitted with the outer ring surface of the rotating ring 18, so that the rotation of the driving wheel 13 drives the rotating ring 18 to rotate around its axis by friction. A plurality of hemispherical grooves 16 are formed in the ring end face and the arc inner wall of the base ring 11 opposite to the clamping ring limiting piece 15, and the convex surface of the spherical rotor 17 in the hemispherical groove 16 has a universal rotation freedom, and the spherical rotor 17 is tightly fitted with the two side ring end faces of the rotating ring 18, and rotates synchronously with the rotating ring 18 when the rotating ring 18 rotates, which converts the sliding friction between the rotating ring 18 and the base ring 11 and the clamping ring limiting piece 15 into rolling friction, greatly reduces the friction resistance when the rotating ring 18 rotates, and limits the axial position of the rotating ring 18 to prevent axial movement during rotation. The rotating ring 18 is fixedly connected with the arc plate 21 of the clamping and limiting ring 20 through the connecting piece 19, so that the rotating ring 18 drives the clamping and limiting ring 20 and the entire concentric positioning structure to rotate synchronously when the rotating ring 18 rotates, and the blank tube of the heat preservation cup clamped by the concentric positioning structure also rotates stably in the axial direction with the concentric positioning structure. The rotation speed of the micro servo motor 14 can be accurately adjusted, so as to accurately control the rotation speed of the blank tube and provide a stable cutting path for the laser cutting part 3. In this process, the clamping roller 50 of the clamping and advancing mechanism 10 will rotate synchronously with the rotation of the blank tube, ensuring that the rotation of the blank tube is not hindered.

[0077] After cutting is completed, the separated blank segments directly fall into the lower rectangular chute 7 under the action of gravity, and then fall onto the receiving plate 34 in the lower rectangular chute 7; after single cutting is completed, the clamping structure does not need to be immediately loosened, and the guide rail group 9 can be driven to move again to move the displacement transverse plate 40, drive the pipe clamping advancing mechanism 10 to push the remaining blank pipe to continue feeding, so that the next cutting position moves to the lower side of the laser head, and then the rotating cutting action is repeated. If the blank pipe needs to be replaced or batch processing is completed, the servo motor 32 of the concentric positioning structure is first controlled to reverse, the driving pinion 33 drives the gear ring 22 to rotate in the reverse direction, the transmission arc groove 30 drives the pipe clamping arm 25 to move radially outward through the transmission clamp head 29, the pipe clamping wheel 26 is separated from the outer surface of the blank pipe, and the concentric positioning structure is loosened; then the electric cylinder 47 of the pipe clamping advancing mechanism 10 is controlled to retract, the piston shaft drives the driving plate 48 to move away from the centering circle plate 42, the driving plate 48 pulls the connecting transverse plate 44 through the force arm 49, so that the two V-shaped pipe clamping plates 43 are separated from each other, the pipe clamping roller 50 is separated from the outer surface of the blank pipe, and the pipe clamping advancing mechanism 10 is loosened.

[0078] After the separated blank segments fall onto the receiving plate 34, the receiving plate 34 slightly rotates under the action of gravity of the blank segments, and the torsion spring at the hinged joint of the receiving plate 34 and the lower rectangular chute 7 generates a reverse elastic force, which buffers the blank segments and avoids damage to the blank segments due to impact; the rubber cushion covering the outer surface of the receiving plate 34 further enhances the buffering effect and protects the outer surface of the blank segments from being scratched. Since the free end of the receiving plate 34 is inclined downward and extends to the hollow interior of the cup blank laser cutting machine 1, the blank segments will slide along the inclined surface of the receiving plate 34 into the storage tank 35 below, realizing the orderly collection of finished products. The free end of the receiving plate 34 is inclined downward and extends to the hollow interior of the cup blank laser cutting machine 1, so the blank segments will slide along the inclined surface of the receiving plate 34 into the storage tank 35. The storage tank 35 is arranged in the hollow interior of the cup blank laser cutting machine 1, and the front side of the cup blank laser cutting machine 1 is provided with a pair of cabinet doors 36, so that the operator can take out the blank segments in the storage tank 35 by opening the cabinet doors 36, thereby completing the blanking link of the entire processing process.

[0079] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A thermos cup blank separation device based on laser cup division, characterized in that, include: The cup blank laser cutting machine (1) has a laser cutting part (3) with a laser cutting head on its top. The middle part of the cup blank laser cutting machine (1) has an open processing platform (2) located below the laser cutting part (3). The interior of the cup blank laser cutting machine (1) corresponding to the processing platform (2) is hollow. The side of the cup blank laser cutting machine (1) has a feeding window (4) that connects to the processing platform (2). The processing platform (2) has a guide rail opening groove (8) that leads to the feeding window (4). The bottom middle of the guide rail opening groove (8) corresponding to the feeding window (4) is open. The tube clamping and rotating structure (6) is set in the middle of the processing platform (2). The tube clamping and rotating structure (6) consists of a concentric positioning structure and a rotating structure. The concentric positioning structure is used to clamp and fix the end of the thermos cup blank tube to be cut. The concentric positioning structure is assembled in the rotating structure so that the thermos cup blank tube has axial rotational freedom. The overall transverse axis of the tube clamping and rotating structure (6) intersects perpendicularly with the vertical axis of the laser cutting head in the laser cutting part (3). The rectangular groove (7) is located directly below the laser cutting head in the laser cutting section (3) and on one side of the clamping tube rotating structure (6). The rectangular groove (7) and the bottom of it are equipped with a material gathering mechanism for collecting and removing the cut and separated blanks. The rectangular groove (7) and the guide rail opening groove (8) are located on opposite sides of the clamping tube rotating structure (6). The tube clamping and pushing mechanism (10) is located on the outside of the cup blank laser cutting machine (1) and its overall axis is on the same horizontal line as the overall axis of the tube clamping and rotating structure (6). The processing platform (2) is provided with a guide rail group (9) that extends outward through the feed window (4). The tube clamping and pushing mechanism (10) is slidably set on the guide rail group (9). The tube clamping and pushing mechanism (10) is used to clamp and fix the outermost end of the thermos cup blank tube and make the thermos cup blank tube have a lateral displacement degree of freedom along the length centerline of the processing platform (2). The thermos cup blank tube has axial rotational freedom in the tube clamping and pushing mechanism (10) and lateral displacement freedom in the tube clamping and rotating structure (6).

2. The thermos cup blank separation device based on laser cup division according to claim 1, characterized in that, The rotating structure of the clamping tube rotating structure (6) includes a base ring (11), a drive wheel (13), a micro servo motor (14), a clamping ring limiting member (15), and a rotating ring (18). A central groove (5) is provided in the middle of the processing platform (2). An integrated base member (12) is fixed at the bottom end of the base ring (11), and the base member (12) is fixedly installed at the center of the bottom inner wall of the central groove (5). At least four sets of drive wheels (13) are rotatably mounted on one side of the base ring (11), and the multiple sets of drive wheels (13) are distributed in a ring at equal intervals. On the other side of the base ring (11), a micro servo motor (14) is fixedly mounted at the position corresponding to each set of drive wheels (13), and the output shaft of each set of micro servo motor (14) passes through the outer side of the base ring (11) and is fixedly connected to each set of drive wheels (13) one by one. The rotating ring (18) is rotatably engaged in multiple sets of driving wheels (13), the multiple sets of driving wheels (13) are in contact with the outer ring surface of the rotating ring (18), and the center of the rotating ring (18) and the center of the base ring (11) are located on the same horizontal axis. The concentric positioning structure is set in the rotating ring (18). The base ring (11) has a fixed installation on the end face of the ring with a limiting snap-fit ​​rotating ring (18) on both sides. The two clamping rings (15) are symmetrical to each other and the inner surface is an arc shape adapted to the rotating ring (18). The cross-section of the clamping ring (15) is a horizontal L-shape.

3. The thermos cup blank separation device based on laser cup division according to claim 2, characterized in that, Multiple hemispherical grooves (16) are provided on the ring end face and the inner wall of the arc of the base ring (11) and the clamping ring limiting member (15) which are opposite to and parallel to each other. Each hemispherical groove (16) is embedded with a spherical rotor (17) with a protruding surface. The spherical rotor (17) has a universal rotational degree of freedom. The spherical rotor (17) on the base ring (11) and the spherical rotor (17) on the clamping ring limiting member (15) respectively fit the two ring end faces of the rotating ring (18).

4. The thermos cup blank separation device based on laser cup division according to claim 3, characterized in that, The concentric positioning structure includes a tube clamping ring (20), a gear ring (22), a tube clamping arm (25), and a tube clamping wheel (26). The inner diameters of the base ring (11) and the rotating ring (18) are the same and both are larger than the outer diameter of the tube clamping ring (20). The top and bottom ends of the tube clamping ring (20) are fixed with an integrated arc plate (21), and the arc plate (21) is in the arc shape that fits the tube clamping ring (20) and is perpendicular to the tube clamping ring (20). The top and bottom ends of the inner ring surface of the rotating ring (18) are fixed with an integrated connector (19), and the opposite end faces of the upper and lower connectors (19) are fixedly connected to the upper and lower arc plates (21) on the tube clamping ring (20). The center of the clamping ring (20) and the center of the rotating ring (18) are located on the same horizontal axis; The inner diameter of the clamping ring (20) and the gear ring (22) are the same. The upper and lower sets of arc plates (21) are fixed with an integrated tooth bending part (23) on the arc end side away from the clamping ring (20). The upper and lower sets of tooth bending parts (23) are symmetrical to each other. The upper and lower sets of tooth bending parts (23) are fixed with an integrated arc-shaped bending part at their close ends. The cross-section of the tooth bending part (23) is L-shaped. The gear ring (22) has a limiting ring groove (24) on one side of the ring end face that is adapted to the arc-shaped bending part of the tooth bending part (23). The gear ring (22) is engaged with the arc-shaped bending parts of the upper and lower sets of tooth bending parts (23) through the limiting ring groove (24). The center of the clamping tube limiting ring (20) and the gear ring (22) are located on the same horizontal axis, and the clamping tube limiting ring (20) and the gear ring (22) are parallel and spaced apart. There are four clamping arms (25) and four clamping wheels (26). The four clamping arms (25) slide and fill the space between the clamping limiting ring (20) and the gear ring (22). The four clamping arms (25) are distributed in a ring at equal intervals. The ends of the four clamping arms (25) that are close to each other are exposed in the inner ring area of ​​the clamping limiting ring (20) and the gear ring (22). The ends of the four clamping arms (25) that are close to each other are rotatably mounted with clamping wheels (26). The clamping ring (20) has four sets of equidistant clamping grooves (28) arranged in a ring. The distribution positions of the clamping ring (20) correspond one-to-one with the distribution positions of the clamping arms (25). The two adjacent sets of clamping grooves (28) and the two adjacent clamping arms (25) are perpendicular to each other. The clamping arms (25) are fixedly connected to a clamping head (27) on one side end of the clamping ring (20). The clamping head (27) on each clamping arm (25) is correspondingly clamped to the end of the clamping groove (28) near the inner ring. The four clamping wheels (26) are perpendicular to the outer surface of the thermos cup blank tube and can rotate as the thermos cup blank tube moves laterally.

5. The thermos cup blank separation device based on laser cup division according to claim 4, characterized in that, The concentric positioning structure also includes a convex side plate (31), a servo motor (32) and an active pinion (33). The side of the clamping tube limiting ring (20) is fixedly provided with an integrated convex side plate (31), and an active pinion (33) that meshes flush with the gear ring (22) is rotatably mounted on the convex side plate (31). The servo motor (32) is fixedly mounted on the outer side wall of the convex side plate (31) away from the active pinion (33), and the output shaft of the servo motor (32) is fixedly connected to the active pinion (33). The gear ring (22) has four sets of transmission arc grooves (30) arranged in a ring on the ring end face near the clamping tube limiting ring (20). The two ends of the transmission arc grooves (30) are close to the outer ring and inner ring of the gear ring (22), respectively. The clamping tube arm (25) is fixedly connected to a transmission clamp head (29) aligned with the limiting clamp head (27) on one side end of the gear ring (22). The transmission clamp head (29) on each clamping tube arm (25) is correspondingly clamped to the end of the transmission arc groove (30) near the inner ring. The maximum width of the concentric positioning structure is smaller than the inner diameter of the rotating ring (18).

6. The thermos cup blank separation device based on laser cup division according to claim 5, characterized in that, In the tube clamping rotating structure (6), the center of the base ring (11), rotating ring (18), tube clamping limiting ring (20) and gear ring (22) is on the same horizontal line as the center of the feed window (4). The central groove (5) is located between the unloading rectangular groove (7) and the guide rail opening groove (8), and the horizontal center lines of the processing platform (2), central groove (5), unloading rectangular groove (7) and guide rail opening groove (8) are on the same vertical plane.

7. The thermos cup blank separation device based on laser cup division according to claim 8, characterized in that, The guide rail assembly (9) includes a guide rail horizontal plate (37), a limiting guide rail groove (38), a servo motor (39), and a guide rail lead screw. Two sets of parallel guide rail horizontal plates (37) are fixedly installed on the outer side wall of the cup blank laser cutting machine (1) corresponding to the two sides of the guide rail opening groove (8). The spacing width of the two guide rail horizontal plates (37) is consistent with the opening width of the guide rail opening groove (8). The two guide rail horizontal plates (37) are close to each other and aligned with the inner walls of the two sides of the guide rail opening groove (8). The guide rail opening groove (8) has aligned and connected limiting guide grooves (38) on the inner walls of both sides and the side walls of the two guide rail horizontal plates (37) that are close to each other. A guide rail screw is rotatably installed between the inner walls of the two ends of one limiting guide groove (38), and a limiting horizontal shaft is fixedly installed in the other limiting guide groove (38). A servo motor two (39) is fixedly installed on the end side of the guide rail horizontal plate (37) with the guide rail screw installed, and the output shaft of the servo motor two (39) passes through the end side of the guide rail horizontal plate (37) and is fixedly connected to the guide rail screw. A horizontal displacement plate (40) is slidably engaged in the limiting guide rail groove (38) on both sides, and the two ends of the displacement plate (40) are threaded and slidably engaged with the guide rail screw and the limiting horizontal shaft in the limiting guide rail groove (38) on both sides, respectively. A vertical base plate (41) for setting the clamping tube pushing mechanism (10) is fixedly installed at the top center of the displacement plate (40).

8. The thermos cup blank separation device based on laser cup division according to claim 7, characterized in that, The tube clamping and pushing mechanism (10) includes a collimating circular plate (42), a V-shaped tube clamping plate (43), a connecting horizontal plate (44), and a T-shaped limiting plate (45). The collimating circular plate (42) is fixedly installed at the top of the vertical base plate (41), and the axis of the collimating circular plate (42) and the center of the feeding window (4) are located on the same horizontal line. The collimator plate (42) has a T-shaped groove (46) with open sides on the round end face facing the clamping tube rotating structure (6), and the T-shaped groove (46) is located on the transverse center line of the round end face of the collimator plate (42). The number of the V-shaped clamping plates (43) is two, and the two V-shaped clamping plates (43) are symmetrical to each other and form a V-shape with the open sides facing each other. The center of the inscribed circle formed by the inclined inner wall of the two V-shaped clamping plates (43) is on the same horizontal line as the axis of the collimating circle plate (42) and the center of the feed window (4). Both sides of the V-shaped clamping plate (43) are fixedly provided with an integrated connecting horizontal plate (44) at the middle of the end side. The outer side of the connecting horizontal plate (44) on both sides is flush with the end side of the V-shaped clamping plate (43) and is fixedly installed with a T-shaped limiting plate (45) that is compatible with the T-shaped slide groove (46). The V-shaped clamping plate (43) on both sides is slidably engaged in the T-shaped slide groove (46) opened on the collimating circular plate (42) through the T-shaped limiting plate (45) at the end side. The cross section of the T-shaped limiting plate (45) and the T-shaped slide groove (46) are both horizontal T-shaped. An electric cylinder (47) is fixedly installed at the center of the circular end face of the collimating plate (42) away from the V-shaped clamping plate (43). The piston shaft of the electric cylinder (47) is away from the collimating plate (42) and is fixedly connected to the driving plate (48). The length of the active plate (48) is less than the total length of the two connecting horizontal plates (44), and the opposite ends of the two connecting horizontal plates (44) protrude from the end of the T-shaped limiting plate (45). The two ends of the active plate (48) and the opposite ends of the two connecting horizontal plates (44) are all hinged with inclined levers (49).

9. The thermos cup blank separation device based on laser cup division according to claim 8, characterized in that, The inner wall of the V-shaped clamping plate (43) is embedded with multiple clamping rollers (50) with protruding surfaces, and the multiple clamping rollers (50) are parallel to and attached to the outer surface of the thermos cup blank tube, and can rotate with the axial rotation of the thermos cup blank tube.

10. A thermos cup blank separation device based on laser cup division according to claim 6, characterized in that, The material gathering mechanism includes a receiving plate (34) and a storage box (35). The cup blank laser cutting machine (1) has a double cabinet door (36) installed on the front side of the hollow interior below, and the hollow interior is filled with a storage box (35). The material discharge rectangular groove (7) is a through-type connection to the hollow interior, and the receiving plate (34) is hinged on the side of the material discharge rectangular groove (7) away from the clamping tube rotating structure (6). A torsion spring is fixed at the hinge of the receiving plate (34) and the material discharge rectangular groove (7), and the outer surface of the receiving plate (34) is covered with a rubber pad. The free end of the receiving plate (34) is inclined downward and extends into the hollow interior of the cup blank laser cutting machine (1) and is located below the central groove (5).

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