A bending device and forming method for processing W-shaped heating tubes.

Abstract

This invention discloses a bending device and its forming method for processing W-shaped heating tubes. The bending device includes a frame and a bending assembly. The bending mechanism includes a horizontal support plate slidably mounted on a bending support frame, a horizontal sliding drive assembly for driving the horizontal support plate, a central bending assembly, and a pair of side bending assemblies. The central bending assembly includes a cylindrical central bending column movably mounted on the upper surface of the horizontal support plate and a central bending drive component for driving the central bending column. The side bending assemblies include cylindrical side bending columns movably mounted on the upper surface of the horizontal support plate and side bending drive components for driving the side bending columns. The extrusion mechanism includes a pair of extrusion assemblies. The extrusion assemblies include cylindrical extrusion columns movably mounted on the bending support frame and extrusion drive components for driving the extrusion columns. This invention eliminates the need for operators to load and unload materials mid-process, thus improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of processing W-shaped heating tubes, and more particularly to a bending device and forming method for processing W-shaped heating tubes. Background Technology

[0002] W-shaped heating elements are commonly used. They are made from straight copper tubes. Because W-shaped heating elements require multiple bends, the current processing involves multiple steps. Operators need to load and unload materials between different steps, which increases the workload for operators. Under such high-intensity work, operators are prone to errors and accidental injuries. At the same time, this processing method has low production efficiency. Summary of the Invention

[0003] To improve production efficiency, this invention provides a bending device and a forming method for processing W-shaped heating tubes.

[0004] The present invention provides a bending device and forming method for processing W-shaped heating tubes, which adopts the following technical solution:

[0005] A bending device for processing W-shaped heating tubes includes a frame and a bending apparatus. The bending apparatus includes a bending support frame, a copper tube feeding and placement mechanism, a bending mechanism, and a pressing mechanism. The copper tube feeding and placement mechanism is mounted on the bending support frame and is used to place unbent straight copper tubes. The bending mechanism includes a horizontal support plate that slides horizontally on the bending support frame, a horizontal sliding drive assembly for driving the horizontal support plate, a central bending assembly, and a pair of side bending assemblies. The central bending assembly includes a cylindrical central bending column that is movably mounted on the upper surface of the horizontal support plate and a central bending column for driving the central bending column to move. The driving component includes a cylindrical side bending column movably disposed on the upper surface of the horizontal support plate and a side bending driving component for driving the side bending column to move; the central bending column is located between a pair of side bending columns and the moving direction of the central bending column is perpendicular to the moving direction of the side bending column; the extrusion mechanism includes a pair of extrusion components; the extrusion component includes a cylindrical extrusion column movably disposed on the bending support frame and an extrusion driving component for driving the extrusion column to move; the pair of extrusion columns are located on both sides of the central bending column and the moving direction of the extrusion column is parallel to the moving direction of the side bending column.

[0006] By adopting the above technical solution, firstly, a straight copper tube is placed on the copper tube feeding and placement mechanism. At this time, a pair of extrusion columns and a central bending column are located on one side of the copper tube, and a pair of side bending columns are located on the other side of the copper tube. Then, the central bending column moves towards the pair of side bending columns until it passes through the pair of side bending columns. Next, the pair of side bending columns move closer to each other. Then, the pair of side bending columns and the central bending column move towards the pair of extrusion columns until the pair of side bending columns pass through the pair of extrusion columns. Then, the pair of extrusion columns move closer to each other, thus forming a W-shaped heating tube. This eliminates the need for operators to load and unload the material midway, reducing the possibility of accidental injury to operators and improving production efficiency.

[0007] Optionally, the upper end of the central bending column is formed with a circular groove-shaped central limiting groove; the upper end of the side bending column is formed with a circular groove-shaped side bending limiting groove; the lower end of the extrusion column is formed with a circular groove-shaped pressure limiting groove; the pressure limiting groove, the central limiting groove, and the side bending limiting groove are on the same horizontal plane; the inner cylindrical surface of the pressure limiting groove is formed as an arc groove fitted with a copper tube.

[0008] By adopting the above technical solutions, the presence of pressure limiting groove, center limiting groove and side bending limiting groove makes the position of copper tube more stable during processing, thereby improving the quality of bending processing.

[0009] Optionally, the center bending drive component includes a center bending moving seat; the center bending column is fixed on the center bending moving seat; an auxiliary limiting component is provided on the center bending moving seat; the auxiliary limiting component includes a cuboid auxiliary limiting pressure strip slidably disposed on the upper end surface of the center bending moving seat and an auxiliary limiting drive member for driving the auxiliary limiting pressure strip to move; the moving direction of the auxiliary limiting pressure strip is the same as the moving direction of the center bending moving seat and the center bending column is located in the moving direction of the auxiliary limiting pressure strip.

[0010] By adopting the above technical solution, during operation, the auxiliary limiting drive component moves the auxiliary limiting pressure strip closer to the central bending column, so that the copper tube is clamped by the auxiliary limiting pressure strip and the central bending column. In this way, the position of the copper tube is more stable during the bending process, thereby improving the quality of the bending process.

[0011] Optionally, the copper tube feeding and placement mechanism includes a feeding support frame disposed on the bending support frame and a pair of spaced-apart copper tube placement frames disposed on the feeding support frame; the copper tube placement frames are used to place the ends of the straight copper tubes.

[0012] By adopting the above technical solution, after the copper tube is fed, both ends of the copper tube are placed on a pair of spaced-apart copper tube mounting racks, so that the middle part of the copper tube is exposed, which facilitates the subsequent bending operation.

[0013] Optionally, the copper tube includes a cylindrical copper tube body in the middle and a pair of cylindrical conductive rods respectively fixed at both ends of the copper tube body along the axial direction; the diameter of the conductive rods is smaller than the diameter of the copper tube body; the end faces of the pair of copper tube mounting brackets that are close to each other are formed with mounting grooves and the upper end of the mounting grooves is open; the mounting grooves are used for the conductive rods to be inserted horizontally from top to bottom.

[0014] By adopting the above technical solution, during the feeding process, the conductive rods at both ends of the copper tube are horizontally inserted into a pair of mounting slots from top to bottom, which makes the position of the copper tube more stable and facilitates subsequent bending.

[0015] Optionally, the upper opening of the placement groove is chamfered to form a guide opening.

[0016] By adopting the above technical solution, the presence of the guide opening makes it easier to insert the conductive rod into the placement groove.

[0017] Optionally, the copper tube feeding and placement mechanism further includes a spacing adjustment component; the spacing adjustment component is used to adjust the spacing between a pair of copper tube placement frames.

[0018] By adopting the above technical solution, the adjustable spacing between a pair of copper pipe mounting frames allows the entire pipe bending equipment to adapt to the processing of copper pipes of different lengths.

[0019] Optionally, it also includes a feeding abutment device; the feeding abutment device is directly opposite the central bending assembly; the feeding abutment device includes a feeding abutment bracket fixed on the bending support frame, a feeding abutment drive seat slidably disposed on the feeding abutment bracket, and a feeding abutment drive mechanism for driving the feeding abutment drive seat; the moving direction of the feeding abutment drive seat is the same as the moving direction of the central bending column; an abutment frame is fixed on the feeding abutment drive seat; the abutment frame is directly opposite the central bending column; the bottom of the bending support frame is formed with a feeding port with openings at the top and bottom; the side bending drive component includes the side bending moving seat; the side bending column is fixed on the side bending moving seat; a vertical drive member is disposed on the side bending moving seat; the side bending column is connected to the vertical drive member and the vertical drive member is used to drive the side bending column to move vertically up and down.

[0020] By adopting the above technical solution, after the W-shaped heating tube is formed, the feeding and abutting drive mechanism drives the feeding and abutting drive seat to approach the central bending column until the abutting frame abuts against the W-shaped heating tube. Then, the vertical drive component drives the side bending column to descend, so that the side bending column disengages from the W-shaped heating tube. Then, the side bending drive component drives the side bending column away from the W-shaped heating tube. Next, the feeding and abutting drive mechanism drives the feeding and abutting drive seat away from the central bending column. In this way, because the center of gravity of the W-shaped heating tube is located on the side of the central bending column close to the abutting frame, the W-shaped heating tube falls due to its own weight and disengages from the central bending column during the process, and finally passes through the feeding port. This eliminates the need for manual feeding and improves production efficiency.

[0021] Optionally, the end of the abutment near the central bent post is formed with a pair of upper and lower opening limiting slots for inserting the bent ends of the heating tubes.

[0022] By adopting the above technical solution, the presence of a pair of limiting slots makes the position of the W-shaped heating tube more stable when the support frame abuts against the W-shaped heating tube, which facilitates the vertical descent and detachment of a pair of side-bent columns from the W-shaped heating tube.

[0023] A method for forming a W-shaped heating element specifically includes the following steps:

[0024] Step S001, feeding of copper tubes in a straight line: The copper tubes are placed on the copper tube feeding and placement mechanism, with a pair of extrusion columns and a central bending column on one side of the copper tubes, and a pair of side bending columns on the other side of the copper tubes.

[0025] Step S002, the middle of the copper tube is bent once: the central bending post moves toward a pair of side bending posts until it passes through a pair of side bending posts;

[0026] Step S003, the middle of the copper tube is bent twice: a pair of side-bending columns move closer to each other;

[0027] Step S004: The two ends of the copper tube are bent once; a pair of side bending posts and a center bending post move toward a pair of extrusion posts until the pair of side bending posts pass through the pair of extrusion posts.

[0028] Step S005: The two ends of the copper tube are bent twice; a pair of extrusion columns are brought closer to each other;

[0029] Steps S001 to S005 are performed consecutively.

[0030] By adopting the above technical solution, the straight copper tube is formed into a W-shaped heating tube after being bent repeatedly. This eliminates the need for operators to load and unload materials midway, reducing the possibility of accidental injury to operators and improving production efficiency.

[0031] In summary, the beneficial effects of the present invention are as follows:

[0032] 1. No operator is required to load or unload materials midway, reducing the possibility of accidental injury to operators and improving production efficiency.

[0033] 2. During the bending process, the position of the copper tube is more stable, which improves the quality of the bending process. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the present invention.

[0035] Figure 2 This is a schematic diagram of the bending device 20 of the present invention.

[0036] Figure 3 This is a schematic diagram of the structure of the copper tube feeding and placement mechanism 60 of the present invention.

[0037] Figure 4 This is a schematic diagram of the structure of the copper tube feeding and placement mechanism 60 of the present invention after removing the central cover 65.

[0038] Figure 5 This is a schematic diagram of the structure of the copper tube mounting bracket 67 of the present invention.

[0039] Figure 6 This is a schematic diagram of the bending mechanism 70 of the present invention.

[0040] Figure 7 This is a schematic diagram of the structure of the central bending component 73 of the present invention.

[0041] Figure 8 This is a schematic diagram of the side bending component 74 of the present invention.

[0042] Figure 9 This is a schematic diagram of the extrusion assembly 80 of the present invention.

[0043] Figure 10 This is a schematic diagram of the structure of the feeding and abutting device 90 of the present invention.

[0044] Figure 11 This is a schematic diagram of the process for forming the W-shaped heating tube of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] 10. Rack;

[0047] 20. Bending device;

[0048] 30. Photoelectric protection device;

[0049] 40. Protective panels;

[0050] 50. Bending support frame; 500. Material discharge port; 51. Bending support base plate; 52. Bending support side frame; 53. Translation support plate;

[0051] 60. Copper tube feeding and placement mechanism; 61. Feeding support frame; 611. Feeding gantry frame; 612. Feeding support plate; 62. Adjusting guide rod; 63. Adjusting electric cylinder; 64. Adjusting drive rod; 641. Linkage rack; 65. Central cover; 66. Placement connecting frame; 67. Copper tube placement frame; 670. Placement groove; 671. Guide opening; 68. Central gear;

[0052] 70. Bending mechanism; 71. Horizontal sliding drive electric cylinder; 72. Horizontal support plate; 73. Center bending assembly; 731. Center bending transverse plate; 732. Center bending longitudinal plate; 733. Center bending electric cylinder; 734. Center bending moving seat; 7341. Center bending moving base plate; 7342. Center bending column support seat; 7343. Pressure strip guide seat; 735. Center bending column; 7350. Center limit 736. Positioning groove; 737. Auxiliary limit drive electric cylinder; 738. Pressure strip fixing seat; 74. Auxiliary limit pressure strip; 75. Side bending assembly; 76. Side bending support component; 77. Side bending drive electric cylinder; 78. Side bending moving base plate; 79. Vertical lifting seat; 70. Vertical guide groove; 71. Lifting drive electric cylinder; 72. Lifting support plate; 73. Side bending column; 74. Side bending limit groove;

[0053] 80. Extrusion assembly; 81. Extrusion drive support frame; 82. Extrusion drive guide block; 83. Extrusion drive electric cylinder; 84. Extrusion connecting plate; 85. Extrusion support block; 86. Extrusion column; 860. Pressure limiting groove;

[0054] 90. Material feeding abutment device; 91. Material feeding abutment bracket; 911. Material feeding abutment base; 912. Material feeding abutment vertical plate; 92. Material feeding abutment electric cylinder; 93. Material feeding abutment drive seat; 94. Abutment frame; 940. Limiting slot;

[0055] 100. Copper tube body; 101. Conductive rod. Detailed Implementation

[0056] The following is in conjunction with the appendix Figure 1-11 The present invention will be described in further detail below.

[0057] Reference for the shape of raw materials to be processed Figure 11 The raw material for processing is a straight copper tube, which includes a cylindrical copper tube body 100 in the middle and a pair of cylindrical conductive rods 101 fixed at both ends of the copper tube body 100 along the axial direction.

[0058] This application discloses a bending device for processing W-shaped heating tubes, with reference to... Figure 1The device includes a frame 10 and a bending device 20. The bending device 20 is mounted on the frame 10. Two vertically spaced protective plates 40 are positioned at the front end of the bending device 20. A pair of photoelectric protection devices 30 are fixed on the frame 10. The pair of photoelectric protection devices 30 are located in front of the bending device 20 and on either side of the pair of protective plates 40. The bending device is used for straight copper pipes. During operation, the bending device 20 bends the straight copper pipe into a W-shaped heating tube. When an object is positioned between the pair of photoelectric protection devices 30, the bending device 20 stops working, effectively protecting the operator.

[0059] refer to Figure 2 The bending device 20 includes a bending support frame 50, a copper tube feeding and placement mechanism 60, a bending mechanism 70, and an extrusion mechanism; the bending support frame 50 includes a bending support base plate 51 fixed on the frame 10; gantry-shaped bending support side frames 52 are fixed at both ends of the upper surface of the bending support base plate 51.

[0060] refer to Figures 2-5 The copper tube feeding and placement mechanism 60 includes a feeding support frame 61, a spacing adjustment assembly, and a pair of L-shaped copper tube placement frames 67. The feeding support frame 61 includes a gantry-shaped feeding gantry frame 611 spanning and fixed to the upper end face of a pair of bending support side frames 52, and a pair of feeding support plates 612 fixed to the upper end face of the feeding gantry frame 611. The spacing adjustment assembly includes an adjustment guide rod 62 fixed between the pair of feeding support plates 612, an adjustment electric cylinder 63, a pair of adjustment drive rods 64, a pair of placement connecting frames 66, and a synchronous linkage component. The adjustment electric cylinder 63 is fixed to one side. The feeding support plate 612 is parallel to the adjustment guide rod 62 in its extension and retraction direction; a pair of adjustment drive rods 64 are coaxially arranged and parallel to the adjustment guide rod 62; the piston rod of the adjustment cylinder 63 of one of the adjustment drive rods 64 is fixedly connected, and the other adjustment drive rod 64 passes through the feeding support plate 612 without the adjustment cylinder 63 installed; the mounting connecting frame 66 corresponds one-to-one with the adjustment drive rod 64 and is fixed on the adjustment drive rod 64 on the corresponding side; one end of the mounting connecting frame 66 is sleeved on the adjustment guide rod 62, and the other end is fixedly connected to the vertical part of the copper tube mounting frame 67.

[0061] refer to Figure 3 and Figure 4 The synchronous linkage includes a central gear 68 and a pair of linkage racks 641 rotatably connected to the upper end face of the feeding gantry 611; the linkage racks 641 correspond one-to-one with the adjusting drive rods 64 and the pair of linkage racks 641 are respectively fixed to the ends of the pair of adjusting drive rods 64 that are close to each other; the pair of linkage racks 641 are located on both sides of the central gear 68 and the pair of linkage racks 641 mesh with the central gear 68 respectively.

[0062] refer to Figure 3A central cover 65 is fixed on the upper surface of the feeding gantry 611, and a synchronous linkage component is located inside the central cover 65; a pair of adjusting drive rods 64 are inserted through the side wall of the corresponding side of the central cover 65.

[0063] When the spacing between a pair of copper tube mounting brackets 67 needs to be adjusted, the adjusting electric cylinder 63 drives the adjusting drive rod 64 connected to its piston rod to move. This causes the mounting connecting bracket 66 fixed on the adjusting drive rod 64 to move along the adjusting guide rod 62. Through gear and rack transmission, the other adjusting drive rod 64 and the adjusting drive rod 64 directly connected to the adjusting electric cylinder 63 move closer or further away in sync. In this way, the pair of mounting connecting brackets 66 move closer or further away in sync, thereby causing the pair of copper tube mounting brackets 67 to move closer or further away in sync, thus completing the spacing adjustment between the pair of copper tube mounting brackets 67.

[0064] refer to Figure 5 A pair of copper tube mounting brackets 67 have mounting grooves 670 formed on their horizontally close end faces, and the mounting grooves 670 are open at the top. The mounting grooves 670 are used for the conductive rod 101 to be inserted horizontally from top to bottom. The upper opening of the mounting grooves 670 is chamfered to form a guide opening 671.

[0065] When the copper tube is being fed, a pair of conductive rods 101 are inserted into a pair of mounting slots 670 from top to bottom.

[0066] refer to Figure 6 The bending mechanism 70 includes a horizontal support plate 72 that is horizontally slidably disposed on the bending support base plate 51, a horizontal sliding drive assembly for driving the horizontal support plate 72, a central bending assembly 73, and a pair of side bending assemblies 74; the central bending assembly 73 and the pair of side bending assemblies 74 are disposed on the upper end surface of the horizontal support plate 72.

[0067] refer to Figure 6 A translational support plate 53 is fixed on the upper surface of the bending support base plate 51; the horizontal sliding drive assembly includes a horizontal sliding drive electric cylinder 71 fixed on the translational support plate 53; a horizontal support plate 72 is fixed on the piston rod of the horizontal sliding drive electric cylinder 71; a pair of linear guide rails parallel to the extension and retraction direction of the horizontal sliding drive electric cylinder 71 are connected between the horizontal support plate 72 and the bending support base plate 51.

[0068] During operation, the horizontal sliding drive electric cylinder 71 drives the horizontal support plate 72 to move, thereby driving the central bending assembly 73 and a pair of side bending assemblies 74 on the horizontal support plate 72 to move synchronously.

[0069] refer to Figure 7The center bending assembly 73 includes a cylindrical center bending column 735 movably disposed on the upper end surface of the horizontal support plate 72 and a center bending drive component for driving the center bending column 735 to move; the center bending drive component includes a center bending support fixed on the upper end surface of the horizontal support plate 72, a center bending moving seat 734 slidably disposed on the center bending support, and a center bending drive component for driving the center bending moving seat 734; the center bending column 735 is fixed on the center bending moving seat 734.

[0070] refer to Figure 7 The center bending support includes a center bending transverse plate 731 fixed to the upper end face of the translation support plate 53 and a pair of center bending longitudinal plates 732 fixed to the upper end face of the translation support plate 53; the center bending moving seat 734 includes a center bending moving base plate 7341 and a center bending column support seat 7342 fixed to the upper end face of the center bending moving base plate 7341; the center bending drive includes a center bending electric cylinder 733 fixed to the end face of the center bending transverse plate 731 away from the pair of center bending longitudinal plates 732; the center bending moving base plate 7341 is fixed to the piston rod of the center bending electric cylinder 733; a linear guide rail parallel to the extension and retraction direction of the center bending electric cylinder 733 is connected between the lower end face of the center bending moving base plate 7341 and the upper end face of the center bending longitudinal plate 732; and the center bending column 735 is vertically fixed to the end of the upper end face of the center bending column support seat 7342 away from the center bending electric cylinder 733.

[0071] During operation, the central bending electric cylinder 733 drives the central bending moving seat 734 to move, thereby driving the central bending column 735 to move.

[0072] refer to Figure 7 An auxiliary limiting assembly is provided on the upper surface of the central bending moving base 734; the auxiliary limiting assembly includes a cuboid auxiliary limiting pressure strip 738 slidably disposed on the upper surface of the central bending column support 7342 and an auxiliary limiting drive component for driving the auxiliary limiting pressure strip 738 to move; the auxiliary limiting drive component includes an auxiliary limiting drive electric cylinder 736 fixed on the upper surface of the central bending moving base plate 7341; a pressure rod is fixed on the piston rod of the auxiliary limiting drive electric cylinder 736. A strip fixing seat 737; one end of an auxiliary limiting pressure strip 738 is fixed to the pressure strip fixing seat 737, and the other end is directly opposite the center bending column 735; a pressure strip guide seat 7343 is fixed on the upper surface of the center bending column support seat 7342; the auxiliary limiting pressure strip 738 slides through the pressure strip guide seat 7343; the moving direction of the auxiliary limiting pressure strip 738 is the same as the moving direction of the center bending moving seat 734, and the center bending column 735 is located in the moving direction of the auxiliary limiting pressure strip 738.

[0073] After the copper tube is fed, the auxiliary limit drive electric cylinder 736 drives the auxiliary limit pressure bar 738 to approach the central bending post 735, so that the center of the copper tube is clamped by the central bending post 735 and the auxiliary limit pressure bar 738.

[0074] refer to Figure 8 The side bending assembly 74 includes a cylindrical side bending column 747 movably disposed on the upper end surface of the horizontal support plate 72 and a side bending drive component for driving the side bending column 747 to move; the side bending drive component includes a side bending support 741 fixed on the upper end surface of the horizontal support plate 72, a side bending moving seat slidably disposed on the side bending support 741 and a side bending drive component for driving the side bending moving seat; the side bending column 747 is connected to the side bending moving seat.

[0075] refer to Figure 8 The side bending support 741 is L-shaped; the side bending drive includes a side bending drive electric cylinder 742 fixed on the vertical part of the side bending support; the side bending moving seat includes a side bending moving base plate 743 and a vertical lifting seat 744 fixed on the upper end surface of the side bending moving base plate 743 away from the side bending drive electric cylinder 742; the side bending moving base plate 743 is fixed on the piston rod of the side bending drive electric cylinder 742; a pair of side bending drive electric cylinders are connected between the upper end surface of the horizontal part of the side bending moving base plate 743 and the lower end surface of the side bending moving base plate 743. The extension and retraction direction of cylinder 742 is parallel to the linear guide rail; the vertical lifting seat 744 has a vertical guide groove 7440 with openings at the top and bottom on the end face away from the side bending drive electric cylinder 742; a lifting support plate 746 is vertically movable in the vertical guide groove 7440; a lifting drive electric cylinder 745 is fixed on the lower end face of the horizontal part of the side bending moving base plate 743; the lifting support plate 746 is fixed on the upper end of the piston rod of the lifting drive electric cylinder 745; the side bending column 747 is vertically fixed on the upper end face of the lifting support plate 746 away from the side bending drive electric cylinder 742.

[0076] During operation, a pair of side bending drive electric cylinders 742 drive a pair of side bending moving base plates 743 to move closer or further away simultaneously, thereby causing a pair of side bending columns 747 to move further or closer simultaneously. When the W-shaped heating tube needs to be unloaded after forming, a pair of lifting drive electric cylinders 745 drive a pair of lifting support plates 746 to descend simultaneously, thereby causing a pair of side bending columns 747 to descend simultaneously. Then, a pair of side bending drive electric cylinders 742 drive a pair of side bending moving base plates 743 to move further away simultaneously, that is, causing a pair of side bending columns 747 to move further away simultaneously.

[0077] refer to Figure 2 and Figure 9The extrusion mechanism includes a pair of extrusion assemblies 80; each extrusion assembly 80 corresponds to a bending support side frame 52; each extrusion assembly 80 includes a cylindrical extrusion column 86 movably disposed on the bending support side frame 52 and an extrusion drive component for driving the extrusion column 86 to move; the extrusion drive component includes an extrusion drive support fixed to the upper end face of the bending support side frame 52, an extrusion moving seat slidably disposed on the extrusion drive support, and an extrusion drive component for driving the extrusion moving seat; the extrusion column 86 is connected to the side bending moving seat.

[0078] refer to Figure 9 The extrusion drive support includes an L-shaped extrusion drive support frame 81 fixed to the upper end face of the bending support side frame 52 and an extrusion drive guide block 82 fixed to the upper end face of the horizontal part of the extrusion drive support frame 81; the extrusion moving seat includes an extrusion connecting plate 84 horizontally inserted and slidably disposed on the extrusion drive guide block 82 and an L-shaped extrusion support block 85 fixed to the end of the extrusion connecting plate 84 away from the extrusion drive; the extrusion drive includes an extrusion drive electric cylinder 83 fixed to the vertical part of the extrusion drive support frame 81; the end of the extrusion connecting plate 84 away from the extrusion support block 85 is fixedly connected to the piston rod of the extrusion drive electric cylinder 83 and the sliding direction of the extrusion connecting plate 84 is the same as the extension and retraction direction of the extrusion drive electric cylinder 83; the extrusion column 86 is fixed to the end of the extrusion support block 85 away from the extrusion drive electric cylinder 83.

[0079] During operation, a pair of extrusion drive cylinders 83 drive a pair of extrusion connecting plates 84 to move, thereby causing a pair of extrusion columns 86 to move away from or towards each other in sync.

[0080] refer to Figure 2 The central bending post 735 is located between a pair of side bending posts 747 and the moving direction of the central bending post 735 is perpendicular to the moving direction of the side bending posts 747; a pair of extrusion posts 86 are located on both sides of the central bending post 735 and the moving direction of the extrusion posts 86 is parallel to the moving direction of the side bending posts 747.

[0081] refer to Figures 7-9 The upper end of the central bending column 735 is formed with a circular groove-shaped central limiting groove 7350; the upper end of the side bending column 747 is formed with a circular groove-shaped side bending limiting groove 7470; the lower end of the extrusion column 86 is formed with a circular groove-shaped pressure limiting groove 860; the pressure limiting groove 860, the central limiting groove 7350 and the side bending limiting groove 7470 are on the same horizontal plane; the inner cylindrical surface of the pressure limiting groove 860 is formed as an arc groove that fits a copper tube.

[0082] refer to Figure 2 and Figure 10To facilitate material feeding, the pipe bending equipment also includes a feeding abutment device 90 fixed on the upper surface of the bending support base plate 51; the feeding abutment device 90 is directly opposite the central bending assembly 73; the feeding abutment device 90 includes a feeding abutment bracket 91 fixed on the bending support frame 50, a feeding abutment drive seat 93 slidably disposed on the feeding abutment bracket 91, a feeding abutment drive mechanism for driving the feeding abutment drive seat 93, and an abutment frame 94 fixed on the upper surface of the feeding abutment drive seat 93; the moving direction of the feeding abutment drive seat 93 is the same as the moving direction of the central bending column 735.

[0083] refer to Figure 10 The unloading abutment bracket 91 includes an inverted T-shaped unloading abutment base 911 and an unloading abutment vertical plate 912 fixed to the end face of the unloading abutment base 911 away from the center bending assembly 73; the unloading abutment drive mechanism includes an unloading abutment electric cylinder 92 fixed to the end face of the unloading abutment vertical plate 912 away from the center bending assembly 73; one end of the unloading abutment drive seat 93 is fixedly connected to the piston rod of the unloading abutment electric cylinder 92; the lower end face of the unloading abutment drive seat 93 is flush with... A linear guide rail parallel to the extension direction of the unloading abutment cylinder 92 is connected between the upper end face of the unloading abutment base 911; the abutment frame 94 is Z-shaped and a pair of W-shaped heating tubes with upper and lower opening limit slots 940 are formed on the horizontal part of the upper side of the abutment frame 94 away from the unloading abutment cylinder 92; the abutment frame 94 is directly opposite the center bending column 735; in order to unload smoothly, the bending support base plate 51 has an unloading port 500 with upper and lower openings.

[0084] After the W-shaped heating tube is formed, the unloading abutment cylinder 92 drives the unloading abutment drive seat 93 to approach the central bending column 735 until a pair of limit slots 940 of the abutment frame 94 are inserted into the bending point of the W-shaped heating tube. Then, a pair of lifting drive cylinders 745 drive a pair of lifting support plates 746 to descend synchronously, causing a pair of side bending columns 747 to descend synchronously. Then, a pair of side bending drive cylinders 742 drive a pair of side bending moving base plates 743 to move away synchronously, that is, the pair of side bending columns 747 move away synchronously. In this way, the W-shaped heating tube is bent by the central bending column. The bending column 735 and the abutment frame 94 restrict the movement of the material feeding abutment electric cylinder 92, which then drives the material feeding abutment drive seat 93 away from the central bending column 735. This causes the abutment frame 94 to separate from the W-shaped heating tube. Since the center of gravity of the W-shaped heating tube is located on the side of the central bending column 735 closer to the abutment frame 94, the W-shaped heating tube will tilt and fall due to its own weight. During this process, the W-shaped heating tube will detach from the central bending column 735. During the fall, the W-shaped heating tube will pass through the feeding port 500 and finally fall into the finished product frame (not shown) directly below the feeding port 500.

[0085] Reference for the forming method of W-type heating element Figure 11 Specifically, it includes the following steps:

[0086] Step S001, feeding of copper tubes in a straight line: The copper tubes are placed on the copper tube feeding and placement mechanism 60, a pair of extrusion columns 86 and a central bending column 735 are located on one side of the copper tubes, and a pair of side bending columns 747 are located on the other side of the copper tubes.

[0087] Step S002, the middle of the copper tube is bent once: the central bending post 735 moves toward a pair of side bending posts 747 until it passes through the pair of side bending posts 747;

[0088] Step S003, the middle of the copper tube is bent twice: a pair of side bending columns 747 move closer to each other;

[0089] Step S004: The two ends of the copper tube are bent once; a pair of side bending posts 747 and a center bending post 735 move toward a pair of extrusion posts 86 until the pair of side bending posts 747 pass through the pair of extrusion posts 86.

[0090] Step S005: The two ends of the copper tube are bent twice; a pair of extrusion columns 86 are brought closer together;

[0091] Steps S001 to S005 are performed consecutively.

[0092] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A pipe bending device for processing W-shaped heating tubes, characterized in that: The device includes a frame (10) and a bending device (20); the bending device (20) includes a bending support frame (50), a copper tube feeding and placement mechanism (60), a bending mechanism (70), and a pressing mechanism; the copper tube feeding and placement mechanism (60) is mounted on the bending support frame (50) and is used to place unbent straight copper tubes; the bending mechanism (70) includes a horizontal support plate (72) that is horizontally slidably mounted on the bending support frame (50), a horizontal sliding drive assembly for driving the horizontal support plate (72), a central bending assembly (73), and a pair of side bending assemblies (74); the central bending assembly (73) includes a cylindrical central bending column (735) that is movably mounted on the upper end face of the horizontal support plate (72) and a central bending drive component for driving the central bending column (735) to move; the side bending... The bending assembly (74) includes a cylindrical side bending column (747) movably disposed on the upper end surface of the horizontal support plate (72) and a side bending drive component for driving the side bending column (747) to move; the central bending column (735) is located between a pair of the side bending columns (747) and the moving direction of the central bending column (735) is perpendicular to the moving direction of the side bending column (747); the extrusion mechanism includes a pair of extrusion assemblies (80); the extrusion assembly (80) includes a cylindrical extrusion column (86) movably disposed on the bending support frame (50) and an extrusion drive component for driving the extrusion column (86) to move; the pair of extrusion columns (86) are located on both sides of the central bending column (735) and the moving direction of the extrusion column (86) is parallel to the moving direction of the side bending column (747).

2. The bending device for processing W-shaped heating tubes according to claim 1, characterized in that: The upper end of the central bending column (735) is formed with a circular groove-shaped central limiting groove (7350); the upper end of the side bending column (747) is formed with a circular groove-shaped side bending limiting groove (7470); the lower end of the extrusion column (86) is formed with a circular groove-shaped pressure limiting groove (860); the pressure limiting groove (860), the central limiting groove (7350) and the side bending limiting groove (7470) are on the same horizontal plane; the inner cylindrical surface of the pressure limiting groove (860) is formed as an arc groove with copper tube fitting.

3. The bending device for processing W-shaped heating tubes according to claim 1, characterized in that: The center bending drive component includes a center bending moving seat (734); the center bending column (735) is fixed on the center bending moving seat (734); an auxiliary limiting component is provided on the center bending moving seat (734); the auxiliary limiting component includes a cuboid auxiliary limiting pressure strip (738) slidably disposed on the upper end surface of the center bending moving seat (734) and an auxiliary limiting drive member for driving the auxiliary limiting pressure strip (738) to move; the moving direction of the auxiliary limiting pressure strip (738) is the same as the moving direction of the center bending moving seat (734) and the center bending column (735) is located in the moving direction of the auxiliary limiting pressure strip (738).

4. A pipe bending device for processing W-shaped heating tubes according to claim 1, characterized in that: The copper tube feeding and placement mechanism (60) includes a feeding support frame (61) disposed on the bending support frame (50) and a pair of spaced copper tube placement frames (67) disposed on the feeding support frame (61); the copper tube placement frames (67) are used to place the ends of the straight copper tubes.

5. A pipe bending device for processing W-shaped heating tubes according to claim 4, characterized in that: The copper tube includes a cylindrical copper tube body (100) in the middle and a pair of cylindrical conductive rods (101) fixed at both ends of the copper tube body (100) along the axial direction. The diameter of the conductive rods (101) is smaller than the diameter of the copper tube body (100). The two copper tube mounting brackets (67) have mounting grooves (670) formed on their close-to-each end faces and the mounting grooves (670) are open at the top. The mounting grooves (670) are used for the conductive rods (101) to be inserted horizontally from top to bottom.

6. A pipe bending device for processing W-shaped heating tubes according to claim 5, characterized in that: The upper opening of the placement groove (670) is chamfered to form a guide opening (671).

7. A pipe bending device for processing W-shaped heating tubes according to claim 4, characterized in that: The copper tube feeding and placement mechanism (60) further includes a spacing adjustment component; the spacing adjustment component is used to adjust the spacing between a pair of copper tube placement frames (67).

8. A pipe bending device for processing W-shaped heating tubes according to claim 1, characterized in that: It also includes a feeding abutment device (90); the feeding abutment device (90) is directly opposite the central bending assembly (73); the feeding abutment device (90) includes a feeding abutment bracket (91) fixed on the bending support frame (50), a feeding abutment drive seat (93) slidably disposed on the feeding abutment bracket (91), and a feeding abutment drive mechanism for driving the feeding abutment drive seat (93); the moving direction of the feeding abutment drive seat (93) is the same as the moving direction of the central bending column (735); the feeding abutment... A support frame (94) is fixed on the drive seat (93); the support frame (94) is directly opposite the central bending column (735); the bottom of the bending support frame (50) is formed with a discharge port (500) with openings at the top and bottom; the side bending drive component includes a side bending moving seat; the side bending column (747) is fixed on the side bending moving seat; a vertical drive member is provided on the side bending moving seat; the side bending column (747) is connected to the vertical drive member and the vertical drive member is used to drive the side bending column (747) to move vertically up and down.

9. A pipe bending device for processing W-shaped heating tubes according to claim 8, characterized in that: The abutment (94) has a pair of upper and lower opening limiting slots (940) formed at one end near the central bent post (735) for inserting the bent ends of the heating tubes.

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