Full-automatic hollow pipe bending production line

Abstract

The invention belongs to the technical field of hollow pipe machining, discloses a full-automatic hollow pipe bending production line, and provides the following scheme for solving the problems proposed in the background technology: the full-automatic hollow pipe bending production line comprises a frame body rack, and a supporting rack is fixed on the outer wall of the top of the frame body rack through screws; first T-shaped guide rails are fixed to the two ends of the top of the supporting rack in the length direction, first C-shaped sliding blocks are slidably connected to the inner walls of the first T-shaped guide rails in an inserted mode, and feeding assemblies are arranged on the outer walls of the tops of the first C-shaped sliding blocks. According to the device, after bending forming, the formed hollow pipe can be rapidly sampled and moved through mutual cooperation of the clamping assemblies, and before conveying and stacking, the two ends of the hollow pipe are subjected to polishing treatment through polishing pieces rotating rapidly, so that redundant burrs are removed, the overall qualification rate of the hollow pipe is increased, and the production efficiency of the hollow pipe is improved. Unification of the diameter sizes of the ends of the hollow pipes can be guaranteed, and the material taking process is more convenient due to telescopic clamping cooperation of the servo air cylinder.

Description

Technical Field

[0001] The invention relates to the technical field of hollow tube processing, and in particular to a full-automatic hollow tube bending production line. Background Art

[0002] The air conditioning evaporator is an important part of the air conditioning system. It is mainly used for the evaporation of refrigerant to absorb heat from the air and achieve the purpose of lowering the temperature. The design and installation quality of the evaporator directly affect the performance and efficiency of the air conditioning system. The air conditioning evaporator can be divided into many types according to different uses and structures, including but not limited to horizontal evaporators, vertical evaporators, cooling pipes, coil pipes, U-shaped pipes, etc. Therefore, in order to meet different refrigeration needs, the evaporator often needs to be bent and processed on the hollow tube. However, there are still some problems when bending the existing hollow tubes:

[0003] 1. Low processing efficiency. Most of the existing hollow tubes are manually loaded and bent by hand, and then pulled and bent by semi-automatic extrusion equipment. This processing method not only consumes a lot of manual labor and has low processing efficiency, but also requires further fine-tuning during the manual bending process, resulting in low processing efficiency.

[0004] 2. Easy to deform. When the existing hollow tubes are bent, if the hands are squeezed too much when they are manually picked up for bending and feeding, the middle of the hollow tube will be flattened, and the outer walls at both ends of the hollow tube are also easily flattened due to pinching. The flat shape of the hollow tube will affect the subsequent processing and use of the hollow tube. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a fully automatic hollow tube bending production line.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A fully automatic hollow tube bending production line, comprising a frame frame, a support frame is fixed to the top outer wall of the frame frame by screws, and first T-shaped guide rails are fixed to both ends of the top of the support frame along the length direction, a first C-shaped slider is slidably inserted into the inner wall of the first T-shaped guide rail, and a feeding assembly is provided on the top outer wall of the first C-shaped slider, the feeding assembly comprises an L-shaped fixing seat fixed on the first C-shaped slider, a trapezoidal plate is welded to the outer wall of one side of the bottom of the L-shaped fixing seat, and a first servo motor is provided on the trapezoidal plate, the output shaft of the first servo motor is connected to a first driving gear, and a first rack is meshed with a first rack on one side outer wall of the first driving gear, and the first rack is fixed to the support frame by screws;

[0008] A bending assembly is provided in the middle of the frame frame, and the bending assembly includes a first fixing plate fixed to the frame frame by bolts, and a symmetrically distributed forming positioning block is fixed on the top of the first fixing plate, and a first telescopic cylinder inclinedly arranged is fixed on the side of the forming positioning block, and second fixing plates are provided on both sides of the top of the frame frame, and a positioning roller is slidably inserted on the top of the second fixing plate, and a first servo cylinder is connected to the bottom axis of the positioning roller, and a condenser tube body is wound around the outer wall of the positioning roller;

[0009] Both ends of the bottom inner wall of the frame frame are installed with reaming components, and the reaming components include a guide slide bar fixed to the bottom inner wall of the frame frame by screws, a driving motor is connected to the outer wall of one side of the guide slide bar, and a guide slider is inserted into the outer wall of the guide slide bar, a second drag chain is fixed to one side of the guide slider by screws, and a support plate is welded to the top outer wall of the guide slider, and a top plate is welded to the top outer wall of the support plate;

[0010] A conveying guide frame is fixed to one side of the middle part of the frame frame by bolts, and a third T-shaped guide rail parallel to each other is welded to the top outer wall of the conveying guide rail, a third C-shaped slider is slidably inserted into the outer wall of the third T-shaped guide rail, and a connecting plate is fixed above the third C-shaped slider, a fourth servo motor is fixed to one side of the connecting plate, and the output shaft of the fourth servo motor is connected to the third driving gear, one side of the third driving gear is meshed and driven with a third rack, and the third rack is arranged parallel to the outer wall of one side of the third T-shaped guide rail, a second telescopic cylinder is fixed to the middle part of the connecting plate, and a clamping assembly is arranged at the piston rod of the second telescopic cylinder, and the clamping assembly includes a material picking frame fixed to the output shaft of the second telescopic cylinder.

[0011] Preferably, the loading assembly also includes a second T-shaped guide rail fixed in a direction parallel to the L-shaped fixing seat, and a second C-shaped slider is slidably inserted into the outer wall of the second T-shaped guide rail, a mounting seat is fixed on the second C-shaped slider by screws, and a first drag chain is arranged on one side of the top of the mounting seat.

[0012] Preferably, a second rack is provided on one side of one of the second T-shaped guide rails, and a second driving gear is meshed and driven on the side surface of the second rack, and a second servo motor is connected to the axis of the second driving gear.

[0013] Preferably, a limiting slide is welded above the mounting seat, and a limiting slider is slidably inserted into the outer wall of the limiting slide, a first electric telescopic rod is fixedly connected to the top of the limiting slider, and a threading tube is penetrated through the middle of the limiting slider, a feed roller frame is provided below the threading tube, and an arc-shaped limiting groove is fixed above the threading tube.

[0014] Preferably, a bracket is provided on one side of the top of the top plate, and a hole-expanding cone rod is rotatably provided above the bracket, a first belt gear is welded to an outer wall of one side of the hole-expanding cone rod, and the outer wall of the first belt gear is driven by a second belt gear through a synchronous belt meshing, and a third servo motor is connected to the axis of the second belt gear.

[0015] Preferably, a rectangular plate is welded to the top outer wall of the support plate, and a limiting top block is fixed to one end of the top of the rectangular plate, a second electric telescopic rod is fixed to one side of the limiting top block, and an extrusion fixing block is installed at the piston rod of the second electric telescopic rod.

[0016] Preferably, a second servo cylinder distributed at equal distances is provided on one side of the bottom of the material picking frame, and a first groove clamp is fixed at the piston rod of the second servo cylinder, and a third servo cylinder distributed at equal distances is provided on the other side of the bottom of the material picking frame, and a second groove clamp is provided at the piston rod of the third servo cylinder.

[0017] Preferably, the first groove clamp and the second groove clamp fit each other, and the inner wall size of the first groove clamp and the second groove clamp is adapted to the size of the condenser body.

[0018] Preferably, a feed frame is arranged parallel to one side of the frame frame, and a conveyor belt is laid on the feed frame. Fourth T-shaped guide rails are fixed to both ends of the top of the feed frame, and a C-shaped slide is slidably arranged on the outer wall of the fourth T-shaped guide rail.

[0019] Preferably, a third electric telescopic rod is connected to an outer wall of one side of the C-shaped skateboard, and a grinding motor is fixed to the top outer wall of the C-shaped skateboard by screws, and a grinding plate is fixed to the output shaft of the grinding motor.

[0020] The beneficial effects of the present invention are:

[0021] 1. The fully automatic hollow tube bending production line designed in this paper operates the feeding component to move back and forth continuously through the external control software, and cooperates with the bending component to drive the positioning roller to continuously extend and retract to adjust the position of the hollow tube, so as to realize the fully automatic reciprocating bending, feeding and forming operation, which greatly saves the physical strength consumed by labor, and can avoid the damage and deformation of the middle part of the hollow tube due to extrusion, thereby improving work efficiency;

[0022] 2. After the bending process of the hollow tube is completed, in order to avoid the flattening of the hollow tube end after cutting, the expansion components set at both ends can quickly and effectively perform rotation expansion on the flat hollow tube end, so that the hollow tube can be quickly processed into a full circle, maintaining the overall consistency of the hollow tube and improving the processing yield;

[0023] 3. The fully automatic hollow tube bending production line designed in this paper can quickly sample and move the formed hollow tubes by using the cooperation of the clamping components after bending and forming. Before conveying and stacking, both ends of the hollow tubes are polished by fast-rotating polishing discs, which not only removes excess burrs and improves the overall qualified rate of the hollow tubes, but also ensures the uniformity of the diameter size of the hollow tube ends. Moreover, the telescopic clamping cooperation of the servo cylinder makes the material taking process more convenient, which can effectively improve the overall qualified rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of the overall structure of a fully automatic hollow tube bending production line proposed by the present invention;

[0025] Figure 2 This is a side view of the overall structure of a fully automatic hollow tube bending production line proposed by the present invention;

[0026] Figure 3 A bottom view of a partial structure of a fully automatic hollow tube bending production line proposed by the present invention;

[0027] Figure 4 A partial structural top view of a fully automatic hollow tube bending production line proposed by the present invention;

[0028] Figure 5 A partial structural side view of a fully automatic hollow tube bending production line proposed by the present invention;

[0029] Figure 6 This is a partial structural front view of a fully automatic hollow tube bending production line proposed by the present invention;

[0030] Figure 7 A side view of the bending component structure of a fully automatic hollow tube bending production line proposed by the present invention;

[0031] Figure 8 A top view of the bending component structure of a fully automatic hollow tube bending production line proposed by the present invention;

[0032] Fig. 9 A side view of the feeding assembly structure of a fully automatic hollow tube bending production line proposed by the present invention;

[0033] Fig.10 This is a front view of the structure of a feeding component of a fully automatic hollow tube bending production line proposed by the present invention;

[0034] Fig.11 A side view of the hole expansion component structure of a fully automatic hollow tube bending production line proposed by the present invention;

[0035] Fig.12 This is a front view of the hole expansion component structure of a fully automatic hollow tube bending production line proposed by the present invention;

[0036] Fig.13 This is a structural schematic diagram of the conveying part of a fully automatic hollow tube bending production line proposed by the present invention;

[0037] Fig.14 A top view of the conveying structure of a fully automatic hollow tube bending production line proposed by the present invention;

[0038] Fig.15 A top view of the partial three-dimensional structure of a fully automatic hollow tube bending production line proposed by the present invention.

[0039] In the figure: 1, frame frame; 2, support stand; 3, first T-shaped guide rail; 4, first C-shaped slider; 5, L-shaped fixed seat; 6, trapezoidal plate; 7, first servo motor; 8, first drive gear; 9, first rack; 10, second T-shaped guide rail; 11, second C-shaped slider; 12, mounting seat; 13, first drag chain; 14, second rack; 15, second drive gear; 16, second servo motor; 17, limit slide; 18, first electric telescopic rod; 19, limit slide; 20, threading tube; 21, feed roller frame; 22, arc limit groove; 23, first fixed plate; 24, forming positioning block; 25, first telescopic cylinder; 26, second fixed plate; 27, positioning roller; 28, first servo cylinder; 29, guide slide; 30, drive motor; 31, guide slide; 32, second drag chain; 33, Support plate; 34, top plate; 35, bracket; 36, expansion cone rod; 37, first belt gear; 38, second belt gear; 39, third servo motor; 40, rectangular plate; 41, limit top block; 42, second electric telescopic rod; 43, extrusion fixing block; 44, conveying guide frame; 45, third T-type guide rail; 46, third C-type slider; 47, fourth servo motor; 48, third driving gear; 49, third rack; 50, connecting plate; 51, second telescopic cylinder; 52, material picking frame; 53, second servo cylinder; 54, first groove clamp; 55, third servo cylinder; 56, second groove clamp; 57, feeding frame; 58, conveying belt; 59, fourth T-type guide rail; 60, C-type slider; 61, third electric telescopic rod; 62, grinding motor; 63, grinding sheet; 64, condenser body. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] Example 1, reference Figure 1-15 , a fully automatic hollow tube bending production line, comprising a frame frame 1 and a PLC controller, the top outer wall of the frame frame 1 is fixed with a support stand 2 by screws, and the top two ends of the support stand 2 are fixed with a first T-shaped guide rail 3 along the length direction, the inner wall of the first T-shaped guide rail 3 is slidably plugged with a first C-shaped slider 4, and the top outer wall of the first C-shaped slider 4 is provided with a feeding assembly, the feeding assembly comprises an L-shaped fixing seat 5 fixed on the first C-shaped slider 4, a trapezoidal plate 6 is welded to the outer wall of one side of the bottom of the L-shaped fixing seat 5, and a first servo motor 7 is provided on the trapezoidal plate 6, the output shaft of the first servo motor 7 is connected with a first driving gear 8, and a first rack 9 is meshed with an outer wall of one side of the first driving gear 8, and the first rack 9 is fixed to the support stand 2 by screws;

[0042] The feeding assembly also includes a second T-shaped guide rail 10 fixed in a direction parallel to the L-shaped fixing seat 5, and a second C-shaped slider 11 is slidably inserted into the outer wall of the second T-shaped guide rail 10, a mounting seat 12 is fixed on the second C-shaped slider 11 by screws, and a first drag chain 13 is arranged on one side of the top of the mounting seat 12, a second rack 14 is arranged on one side of the second T-shaped guide rail 10, and a second driving gear 15 is meshed and driven on the side of the second rack 14, and a second servo motor 16 is connected to the axis of the second driving gear 15;

[0043] A limit slide 17 is welded above the mounting seat 12, and a limit slider 19 is slidably inserted into the outer wall of the limit slide 17, a first electric telescopic rod 18 is fixedly connected to the top of the limit slider 19, and a threading tube 20 is provided through the middle of the limit slider 19, a feed roller frame 21 is provided below the threading tube 20, and an arc-shaped limit groove 22 is fixed above the threading tube 20;

[0044] A bending assembly is provided in the middle of the frame frame 1, and the bending assembly includes a first fixing plate 23 fixed to the frame frame 1 by bolts, and a symmetrically distributed forming positioning block 24 is fixed on the top of the first fixing plate 23, and a first telescopic cylinder 25 is fixed and tilted on the side of the forming positioning block 24, and a second fixing plate 26 is provided on both sides of the top of the frame frame 1, and a positioning roller 27 is slidably inserted on the top of the second fixing plate 26, and a first servo cylinder 28 is connected to the bottom axis of the positioning roller 27, and the outer wall of the positioning roller 27 is wrapped with a condenser tube body 64;

[0045] The external control software operates the feeding component to continuously reciprocate, and cooperates with the bending component to drive the positioning roller 27 to continuously extend and retract to adjust the position of the hollow tube, thereby realizing a fully automatic reciprocating bending feeding and forming operation, greatly saving the physical effort consumed by labor, and avoiding damage and deformation of the middle part of the hollow tube due to squeezing, thereby improving work efficiency;

[0046] Both ends of the bottom inner wall of the frame frame 1 are installed with reaming components, and the reaming components include a guide slide bar 29 fixed to the bottom inner wall of the frame frame 1 by screws, a driving motor 30 is connected to the outer wall of one side of the guide slide bar 29, and a guide slider 31 is inserted into the outer wall of the guide slide bar 29, a second drag chain 32 is fixed to one side of the guide slider 31 by screws, and a support plate 33 is welded to the top outer wall of the guide slider 31, and a top plate 34 is welded to the top outer wall of the support plate 33;

[0047] A bracket 35 is provided on one side of the top of the top plate 34, and a hole-expanding cone rod 36 is rotatably provided above the bracket 35, a first belt gear 37 is welded to an outer wall of one side of the hole-expanding cone rod 36, and the outer wall of the first belt gear 37 is driven by a second belt gear 38 through a synchronous belt meshing, and a third servo motor 39 is connected to the axis of the second belt gear 38, a rectangular plate 40 is welded to the outer wall of the top of the support plate 33, and a limiting top block 41 is fixed to one end of the top of the rectangular plate 40, a second electric telescopic rod 42 is fixed to one side of the limiting top block 41, and an extrusion fixing block 43 is installed at the piston rod of the second electric telescopic rod 42;

[0048] A conveying guide frame 44 is fixed to one side of the middle part of the frame frame 1 by bolts, and a third T-shaped guide rail 45 parallel to each other is welded to the top outer wall of the conveying guide frame 44, a third C-shaped slider 46 is slidably inserted into the outer wall of the third T-shaped guide rail 45, and a connecting plate 50 is fixed above the third C-shaped slider 46, a fourth servo motor 47 is fixed to one side of the connecting plate 50, and the output shaft of the fourth servo motor 47 is connected to the third driving gear 48, one side of the third driving gear 48 is meshed and driven with a third rack 49, and the third rack 49 is arranged parallel to the outer wall of one side of the third T-shaped guide rail 45, a second telescopic cylinder 51 is fixed to the middle part of the connecting plate 50, and a clamping assembly is arranged at the piston rod of the second telescopic cylinder 51, and the clamping assembly includes a material picking frame 52 fixed to the output shaft of the second telescopic cylinder 51;

[0049] A second servo cylinder 53 distributed at equal distances is provided on one side of the bottom of the material-grabbing frame 52, and a first groove clamp 54 is fixed at the piston rod of the second servo cylinder 53. A third servo cylinder 55 distributed at equal distances is provided on the other side of the bottom of the material-grabbing frame 52, and a second groove clamp 56 is provided at the piston rod of the third servo cylinder 55. The first groove clamp 54 and the second groove clamp 56 fit each other, and the inner wall size of the first groove clamp 54 and the second groove clamp 56 matches the size of the condenser tube body 64.

[0050] A feed frame 57 is arranged parallel to one side of the frame frame 1, and a conveyor belt 58 is laid on the feed frame 57, fourth T-shaped guide rails 59 are fixed to both ends of the top of the feed frame 57, and a C-shaped slide plate 60 is slidably arranged on the outer wall of the fourth T-shaped guide rail 59, a third electric telescopic rod 61 is connected to the outer wall of one side of the C-shaped slide plate 60, and a grinding motor 62 is fixed to the top outer wall of the C-shaped slide plate 60 by screws, and a grinding plate 63 is fixed to the output shaft of the grinding motor 62.

[0051] When using the fully automatic hollow tube bending production line, first connect the production line to an external power supply, and connect the PLC controller to the controller of the production line. Then, insert the hollow tube material to be bent into the threading tube 20, and the end of the hollow tube passes through the middle of the feeding roller frame 21 at the bottom, and the excess part of the hollow tube is clamped in the arc-shaped limit groove 22 at the top. After completion, start the first servo motor 7, and use the first servo motor 7 to drive the first driving gear 8 at the bottom to rotate, so as to engage with the first rack 9 at the bottom, which can drive the L-shaped fixing seat 5 to slide. After reaching the positioning roller 27 above the second fixed plate 26, its first electric telescopic rod 18 extends, driving the limit slider 19 to slide downward, and while the hollow tube material descends, the positioning roller 27 is lifted up by the first servo cylinder 28 connected to the bottom of the positioning roller 27, and then the hollow tube material is fixed at the end by the side fixing part, and the first servo cylinder 28 completes the contraction to realize the storage and reset of the positioning roller 27, and then the PLC controller is used to control the first servo motor 7 to continuously drive the first driving gear 8 to rotate, thereby driving the L-shaped fixing seat 5 to continuously slide and adjust the position. The specific moving path is referenced in Fig.15 The shape of the middle condenser body 64, when it moves to the bending part of the condenser body 64, the first servo cylinder 28 at the corner will lift the positioning roller 27, and then bend the hollow tube material on the inner wall of the positioning roller 27, and then retract the positioning roller 27 to continue to move the tube to the next path, and in the process of discharging, cooperate with the first telescopic cylinder 25 and the forming positioning block to position the middle bending part of the condenser body 64, when the positioning roller 27 is used to support the clamped tube and lay out the line on the side and the middle, the same operation is performed on the other side. Since the positioning roller 27 is used to lift the clamped tube at the moving bending part and shrinks after completion, the hollow tube material can be tensioned and laid out at any time to ensure the overall size is accurate, and the positioning roller 27 lifts the tube to avoid redundancy in the walking path and improves the efficiency of the tube laying work. After the bending is completed, the end is cut off with the corresponding cutting pliers.

[0052] Example 2, reference Figure 4-12, a fully automatic hollow tube bending production line, comprising a frame frame 1 and a PLC controller, the top outer wall of the frame frame 1 is fixed with a support stand 2 by screws, and the top two ends of the support stand 2 are fixed with a first T-shaped guide rail 3 along the length direction, the inner wall of the first T-shaped guide rail 3 is slidably plugged with a first C-shaped slider 4, and the top outer wall of the first C-shaped slider 4 is provided with a feeding assembly, the feeding assembly comprises an L-shaped fixing seat 5 fixed on the first C-shaped slider 4, a trapezoidal plate 6 is welded to the outer wall of one side of the bottom of the L-shaped fixing seat 5, and a first servo motor 7 is provided on the trapezoidal plate 6, the output shaft of the first servo motor 7 is connected with a first driving gear 8, and a first rack 9 is meshed with an outer wall of one side of the first driving gear 8, and the first rack 9 is fixed to the support stand 2 by screws;

[0053] The feeding assembly also includes a second T-shaped guide rail 10 fixed in a direction parallel to the L-shaped fixing seat 5, and a second C-shaped slider 11 is slidably inserted into the outer wall of the second T-shaped guide rail 10, a mounting seat 12 is fixed on the second C-shaped slider 11 by screws, and a first drag chain 13 is arranged on one side of the top of the mounting seat 12, a second rack 14 is arranged on one side of the second T-shaped guide rail 10, and a second driving gear 15 is meshed and driven on the side of the second rack 14, and a second servo motor 16 is connected to the axis of the second driving gear 15;

[0054] A limit slide 17 is welded above the mounting seat 12, and a limit slider 19 is slidably inserted into the outer wall of the limit slide 17, a first electric telescopic rod 18 is fixedly connected to the top of the limit slider 19, and a threading tube 20 is provided through the middle of the limit slider 19, a feed roller frame 21 is provided below the threading tube 20, and an arc-shaped limit groove 22 is fixed above the threading tube 20;

[0055] A bending assembly is provided in the middle of the frame frame 1, and the bending assembly includes a first fixing plate 23 fixed to the frame frame 1 by bolts, and a symmetrically distributed forming positioning block 24 is fixed on the top of the first fixing plate 23, and a first telescopic cylinder 25 is fixed and tilted on the side of the forming positioning block 24, and a second fixing plate 26 is provided on both sides of the top of the frame frame 1, and a positioning roller 27 is slidably inserted on the top of the second fixing plate 26, and a first servo cylinder 28 is connected to the bottom axis of the positioning roller 27, and the outer wall of the positioning roller 27 is wrapped with a condenser tube body 64;

[0056] Both ends of the bottom inner wall of the frame frame 1 are installed with reaming components, and the reaming components include a guide slide bar 29 fixed to the bottom inner wall of the frame frame 1 by screws, a driving motor 30 is connected to the outer wall of one side of the guide slide bar 29, and a guide slider 31 is inserted into the outer wall of the guide slide bar 29, a second drag chain 32 is fixed to one side of the guide slider 31 by screws, and a support plate 33 is welded to the top outer wall of the guide slider 31, and a top plate 34 is welded to the top outer wall of the support plate 33;

[0057] After bending and forming, the formed hollow tube can be quickly sampled and moved by the cooperation of the clamping components, and before conveying and stacking, both ends of the hollow tube are polished by the fast-rotating polishing disc 63, which not only removes excess burrs and improves the overall qualified rate of the hollow tube, but also ensures the uniformity of the diameter size of the end of the hollow tube. Moreover, the telescopic clamping cooperation of the servo cylinder makes the material taking process more convenient, which can effectively improve the overall qualified rate.

[0058] A bracket 35 is provided on one side of the top of the top plate 34, and a hole-expanding cone rod 36 is rotatably provided above the bracket 35, a first belt gear 37 is welded to an outer wall of one side of the hole-expanding cone rod 36, and the outer wall of the first belt gear 37 is driven by a second belt gear 38 through a synchronous belt meshing, and a third servo motor 39 is connected to the axis of the second belt gear 38, a rectangular plate 40 is welded to the outer wall of the top of the support plate 33, and a limiting top block 41 is fixed to one end of the top of the rectangular plate 40, a second electric telescopic rod 42 is fixed to one side of the limiting top block 41, and an extrusion fixing block 43 is installed at the piston rod of the second electric telescopic rod 42;

[0059] A conveying guide frame 44 is fixed to one side of the middle part of the frame frame 1 by bolts, and a third T-shaped guide rail 45 parallel to each other is welded to the top outer wall of the conveying guide frame 44, a third C-shaped slider 46 is slidably inserted into the outer wall of the third T-shaped guide rail 45, and a connecting plate 50 is fixed above the third C-shaped slider 46, a fourth servo motor 47 is fixed to one side of the connecting plate 50, and the output shaft of the fourth servo motor 47 is connected to the third driving gear 48, one side of the third driving gear 48 is meshed and driven with a third rack 49, and the third rack 49 is arranged parallel to the outer wall of one side of the third T-shaped guide rail 45, a second telescopic cylinder 51 is fixed to the middle part of the connecting plate 50, and a clamping assembly is arranged at the piston rod of the second telescopic cylinder 51, and the clamping assembly includes a material picking frame 52 fixed to the output shaft of the second telescopic cylinder 51;

[0060] A second servo cylinder 53 distributed at equal distances is provided on one side of the bottom of the material-grabbing frame 52, and a first groove clamp 54 is fixed at the piston rod of the second servo cylinder 53. A third servo cylinder 55 distributed at equal distances is provided on the other side of the bottom of the material-grabbing frame 52, and a second groove clamp 56 is provided at the piston rod of the third servo cylinder 55. The first groove clamp 54 and the second groove clamp 56 fit each other, and the inner wall size of the first groove clamp 54 and the second groove clamp 56 matches the size of the condenser tube body 64.

[0061] A feed frame 57 is arranged parallel to one side of the frame frame 1, and a conveyor belt 58 is laid on the feed frame 57, fourth T-shaped guide rails 59 are fixed to both ends of the top of the feed frame 57, and a C-shaped slide plate 60 is slidably arranged on the outer wall of the fourth T-shaped guide rail 59, a third electric telescopic rod 61 is connected to the outer wall of one side of the C-shaped slide plate 60, and a grinding motor 62 is fixed to the top outer wall of the C-shaped slide plate 60 by screws, and a grinding plate 63 is fixed to the output shaft of the grinding motor 62.

[0062] When using the fully automatic hollow tube bending production line, first connect the production line to an external power supply, and connect the PLC controller to the controller of the production line. Then, insert the hollow tube material to be bent into the threading tube 20, and the end of the hollow tube passes through the middle of the feeding roller frame 21 at the bottom, and the excess part of the hollow tube is clamped in the arc-shaped limit groove 22 at the top. After completion, start the first servo motor 7, and use the first servo motor 7 to drive the first driving gear 8 at the bottom to rotate, so as to engage with the first rack 9 at the bottom, which can drive the L-shaped fixing seat 5 to slide. After reaching the positioning roller 27 above the second fixed plate 26, its first electric telescopic rod 18 extends, driving the limit slider 19 to slide downward, and while the hollow tube material descends, the positioning roller 27 is lifted up by the first servo cylinder 28 connected to the bottom of the positioning roller 27, and then the hollow tube material is fixed at the end by the side fixing part, and the first servo cylinder 28 completes the contraction to realize the storage and reset of the positioning roller 27, and then the PLC controller is used to control the first servo motor 7 to continuously drive the first driving gear 8 to rotate, thereby driving the L-shaped fixing seat 5 to continuously slide and adjust the position. The specific moving path is referenced in Fig.15The shape of the middle condenser body 64, when it moves to the bending part of the condenser body 64, the first servo cylinder 28 at the corner lifts up the positioning roller 27, and then bends the hollow tube material on the inner wall of the positioning roller 27, and then retracts the positioning roller 27 to continue the next path of tube placement movement, and in the process of material placement, cooperate with the first telescopic cylinder 25 and the forming positioning block to position the middle bending part of the condenser body 64, when the positioning roller 27 is supported to hold the clamped tube and release the line on the side and the middle, the same operation is performed on the other side. Since the positioning roller 27 is used to lift the clamped tube at the moving bending part and shrinks after completion, the hollow tube material can be tensioned and released at all times to ensure the overall size is accurate, and the positioning roller 27 can lift the tube to avoid redundant walking paths and improve the efficiency of tube release. After the bending is completed, the end is cut off by the corresponding cutting pliers;

[0063] After being cut off, the end of the hollow tube will become deflated, which will cause the hollow tube to be unable to normally transport the medium later. In order to solve this problem, the driving motor 30 is used to drive the top guide slider 31 to slide, thereby driving the top reaming cone rod 36 to align with the end of the hollow tube, and then starting the third servo motor 39. The third servo motor 39 drives the reaming cone rod 36 to rotate, and the deflated end is rotated to expand the hole to ensure that the end is round. After the expansion is completed, the fourth servo motor 47 is used to drive the third driving gear 48 at the bottom to rotate, and the top connecting plate 50 is driven to move, thereby realizing automatic shifting and picking up materials. With the cooperation of the clamping assembly, the second telescopic cylinder 51 is extended to drive the bottom picking frame 52 to descend. After moving to the top of the hollow tube, the third servo cylinder 55 and the second servo cylinder 53 are moved away from each other, and the first groove clamp 54 and the second groove clamp 56 are moved away from each other. After unfolding, the hollow tube is clamped. After clamping, the end of the hollow tube is aligned with the axis of the grinding sheet 63, and then the grinding motor 62 is started, and the third electric telescopic rod 61 is used to push the grinding sheet 63 close to the end of the hollow tube for grinding. After grinding, not only can the excess burrs be removed, but also the diameter of the hollow tube mouth can be controlled to avoid excessive deviation in size due to hole expansion. Then, the third servo cylinder 55 and the second servo cylinder 53 are used to drive the first groove clamp 54 and the second groove clamp 56 to approach each other, so that the hollow tube can be removed and dropped onto the conveyor belt 58 for transportation.

[0064] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0065] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0066] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fully automatic hollow tube bending production line, comprising a frame frame (1) and a PLC controller, characterized in that: The top outer wall of the frame frame (1) is fixed with a support frame (2) by screws, and first T-shaped guide rails (3) are fixed to both ends of the top of the support frame (2) along the length direction, and a first C-shaped slider (4) is slidably inserted into the inner wall of the first T-shaped guide rail (3), and a loading assembly is arranged on the top outer wall of the first C-shaped slider (4), and the loading assembly comprises an L-shaped fixing seat (5) fixed on the first C-shaped slider (4), a trapezoidal plate (6) is welded to the outer wall of one side of the bottom of the L-shaped fixing seat (5), and a first servo motor (7) is arranged on the trapezoidal plate (6), the output shaft of the first servo motor (7) is connected with a first driving gear (8), and a first rack (9) is meshed on the outer wall of one side of the first driving gear (8), and the first rack (9) is fixed to the support frame (2) by screws; A bending assembly is provided in the middle of the frame frame (1), and the bending assembly includes a first fixing plate (23) fixed to the frame frame (1) by bolts, and a symmetrically distributed forming positioning block (24) is fixed on the top of the first fixing plate (23), and a first telescopic cylinder (25) is fixed and tilted on the side of the forming positioning block (24), and second fixing plates (26) are provided on both sides of the top of the frame frame (1), and a positioning roller (27) is slidably inserted on the top of the second fixing plate (26), and the bottom axis of the positioning roller (27) is connected to a first servo cylinder (28), and the outer wall of the positioning roller (27) is wrapped with a condenser tube body (64); Both ends of the bottom inner wall of the frame frame (1) are equipped with hole expansion components, and the hole expansion component includes a guide slide bar (29) fixed to the bottom inner wall of the frame frame (1) by screws, a driving motor (30) is connected to the outer wall of one side of the guide slide bar (29), and a guide slider (31) is inserted into the outer wall of the guide slide bar (29), a second drag chain (32) is fixed to one side of the guide slider (31) by screws, and a support plate (33) is welded to the top outer wall of the guide slider (31), and a top plate (34) is welded to the top outer wall of the support plate (33); A conveying guide frame (44) is fixed to one side of the middle of the frame frame (1) by bolts, and a third T-shaped guide rail (45) parallel to each other is welded to the top outer wall of the conveying guide frame (44), a third C-shaped slider (46) is slidably inserted into the outer wall of the third T-shaped guide rail (45), and a connecting plate (50) is fixed above the third C-shaped slider (46), a fourth servo motor (47) is fixed to one side of the connecting plate (50), and the output shaft of the fourth servo motor (47) is connected to a third driving gear (48), one side of the third driving gear (48) is meshed and driven with a third rack (49), and the third rack (49) is arranged parallel to the outer wall of one side of the third T-shaped guide rail (45), a second telescopic cylinder (51) is fixed to the middle of the connecting plate (50), and a gripping assembly is arranged at the piston rod of the second telescopic cylinder (51), and the gripping assembly includes a material picking frame (52) fixed to the output shaft of the second telescopic cylinder (51).

2. The fully automatic hollow tube bending production line according to claim 1 is characterized in that: The loading assembly also includes a second T-shaped guide rail (10) fixed in a direction parallel to the L-shaped fixing seat (5), and a second C-shaped slider (11) is slidably inserted into the outer wall of the second T-shaped guide rail (10), a mounting seat (12) is fixed on the second C-shaped slider (11) by screws, and a first drag chain (13) is arranged on one side of the top of the mounting seat (12).

3. The fully automatic hollow tube bending production line according to claim 2 is characterized in that: A second rack (14) is provided on one side of one of the second T-shaped guide rails (10), and a second driving gear (15) is meshed and driven on the side of the second rack (14), and a second servo motor (16) is connected to the axis of the second driving gear (15).

4. The fully automatic hollow tube bending production line according to claim 3 is characterized in that: A limiting slide (17) is welded above the mounting seat (12), and a limiting slider (19) is slidably inserted into the outer wall of the limiting slide (17), a first electric telescopic rod (18) is fixedly connected to the top of the limiting slider (19), and a threading tube (20) is provided through the middle of the limiting slider (19), a feeding roller frame (21) is provided below the threading tube (20), and an arc-shaped limiting groove (22) is fixed above the threading tube (20).

5. The fully automatic hollow tube bending production line according to claim 1 is characterized in that: A bracket (35) is arranged on one side of the top of the top plate (34), and a hole-expanding cone rod (36) is rotatably arranged above the bracket (35), a first belt gear (37) is welded to an outer wall of one side of the hole-expanding cone rod (36), and the outer wall of the first belt gear (37) is meshed and driven with a second belt gear (38) through a synchronous belt, and a third servo motor (39) is connected to the axis of the second belt gear (38).

6. The fully automatic hollow tube bending production line according to claim 5, characterized in that: A rectangular plate (40) is welded to the outer wall of the top of the support plate (33), and a limiting top block (41) is fixed to one end of the top of the rectangular plate (40), a second electric telescopic rod (42) is fixed to one side of the limiting top block (41), and an extrusion fixing block (43) is installed at the piston rod of the second electric telescopic rod (42).

7. The fully automatic hollow tube bending production line according to claim 1, characterized in that: A second servo cylinder (53) is arranged at an equal distance on one side of the bottom of the material picking frame (52), and a first groove clamp (54) is fixed at the piston rod of the second servo cylinder (53); a third servo cylinder (55) is arranged at an equal distance on the other side of the bottom of the material picking frame (52), and a second groove clamp (56) is arranged at the piston rod of the third servo cylinder (55).

8. The fully automatic hollow tube bending production line according to claim 7, characterized in that: The first groove clamp (54) and the second groove clamp (56) fit each other, and the inner wall size of the first groove clamp (54) and the second groove clamp (56) is compatible with the size of the condenser tube body (64).

9. The fully automatic hollow tube bending production line according to claim 1, characterized in that: A feeding frame (57) is arranged parallel to one side of the frame frame (1), and a conveying belt (58) is laid on the feeding frame (57). Fourth T-shaped guide rails (59) are fixed to both ends of the top of the feeding frame (57), and a C-shaped slide plate (60) is slidably arranged on the outer wall of the fourth T-shaped guide rail (59).

10. The fully automatic hollow tube bending production line according to claim 9, characterized in that: A third electric telescopic rod (61) is connected to an outer wall of one side of the C-shaped slide plate (60), and a grinding motor (62) is fixed to the top outer wall of the C-shaped slide plate (60) by screws, and a grinding sheet (63) is fixed to the output shaft of the grinding motor (62).

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