Automatic tube flanging machine

Abstract

The utility model discloses a kind of pipe automatic flanging machine, including pipe clamping mechanism, pipe clamping drive mechanism and pipe flanging heating setting mechanism, the pipe flanging heating setting mechanism includes heating mechanism and flanging setting mechanism, the pipe clamping mechanism clamps pipe, the heating mechanism heats pipe end, the flanging setting mechanism is flanged to heated pipe end, the pipe clamping mechanism is driven to move to heating mechanism, flanging setting mechanism position by pipe clamping drive mechanism, the utility model has the advantages such as coherent production flow, processing efficiency and high degree of automation.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing technology, specifically an automatic pipe flanging machine. Background Technology

[0002] Traditional pipe flanging machines use a pipe clamping device to clamp the pipe and heat the pipe ends. After heating, the pipe usually needs to be manually transferred to the flanging device for flanging and shaping, resulting in a discontinuous production process, low processing efficiency, and low automation.

[0003] Traditional pipe clamping devices generally include an upper clamp, a lower clamp, and an actuator. The actuator drives the upper clamp to move downward to achieve pipe clamping and positioning. The drawback of this structure is that the pipe is prone to displacement due to vibration or skew during the clamping process, which affects the accuracy of pipe positioning.

[0004] Traditional pipe flanging devices have a pipe flanging positioning plate. After the end of the pipe is heated, the end of the pipe is pressed against the pipe flanging positioning plate, causing the end of the pipe to be folded. The shortcomings of this structure are: there is no radial limiting mechanism, the outer diameter of the pipe after flanging is uncontrollable, and the outer diameter after flanging depends entirely on the flowability of the pipe material and the magnitude of the thrust, which cannot be actively constrained, resulting in poor dimensional consistency of batch pipes; and the flanging is prone to problems such as flared deformation or uneven edge thickness. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic pipe flanging machine that ensures a continuous production process, high processing efficiency, and a high degree of automation.

[0006] The technical solution adopted by this utility model to solve its technical problem is: An automatic pipe flanging machine, characterized in that it includes a pipe clamping mechanism, a pipe clamping drive mechanism, and a pipe flanging heating and shaping mechanism. The pipe flanging heating and shaping mechanism includes a heating mechanism and a flanging and shaping mechanism. The pipe clamping mechanism clamps the pipe, the heating mechanism heats the end of the pipe, and the flanging and shaping mechanism flanging the heated end of the pipe. The pipe clamping mechanism is driven by the pipe clamping drive mechanism to move to the position of the heating mechanism and the flanging and shaping mechanism. The pipe clamping drive mechanism moves the pipe clamping mechanism to automatically transfer the heated pipe to the flanging and shaping mechanism for flanging, thus automating the pipe heating-flanging process, ensuring the continuity of the production process, and improving processing efficiency.

[0007] The pipe clamping mechanism of this utility model includes an upper clamp, a lower clamp, an actuator, and a pre-tightening plate. The upper clamp is located above the lower clamp and is driven to move up and down by the actuator. The upper clamp has a pre-tightening plate receiving groove on its lower end face. The pre-tightening plate is located in the pre-tightening plate receiving groove. A spring is provided between the pre-tightening plate and the upper clamp. One end of the spring abuts against the pre-tightening plate, and the other end abuts against the upper clamp. The pre-tightening plate protrudes from the lower end face of the upper clamp in its natural state. By setting a pre-tightening plate, the pre-pressure of the pre-tightening plate can effectively prevent pipe displacement. Subsequently, the upper clamp presses down to tighten the pipe, which can better control the pressing quality and ensure the accuracy of pipe positioning.

[0008] The pipe clamping mechanism of this utility model is also provided with a screw, the upper end of which extends outward to form a screw head; The pre-tightening plate has a threaded hole, and the upper clamp has a screw limiting groove that communicates with the pre-tightening plate receiving groove. The screw slides in the screw limiting groove. The screw limiting groove includes an upper section and a lower section coaxially arranged. The inner diameter of the upper section is larger than the inner diameter of the lower section. A screw limiting surface is formed between the upper and lower sections. The lower end of the screw passes through the screw limiting groove and is threadedly connected to the threaded hole on the pre-tightening plate. Alternatively, the upper clamp has a threaded hole at the top of the pre-tightening plate receiving groove, and the pre-tightening plate has a screw limiting groove that penetrates the pre-tightening plate. The screw slides in the screw limiting groove. The screw limiting groove includes an upper section and a lower section coaxially arranged. The inner diameter of the upper section is smaller than the inner diameter of the lower section. A screw limiting surface is formed between the upper and lower sections. The lower end of the screw passes through the screw limiting groove and is threadedly connected to the threaded hole on the upper clamp. In its natural state, the screw head rests against the screw limiting surface, and the preload plate protrudes from the lower end face of the upper clamp. It can both preload the upper clamp by moving it downwards via the pre-tightening plate and move the upper clamp upwards to drive the pre-tightening plate upwards. At the same time, the initial position height of the pre-tightening plate can be adjusted by screws connected to the threaded connection between the pre-tightening plate and the upper clamp.

[0009] The pre-tightening plate receiving groove of this utility model is opened on the rear end face of the upper clamp and extends downward to the lower end face of the upper clamp to form a through groove structure. The lower clamp has a lower half-groove for limiting the pipe on its upper end face, the upper clamp has a first half-groove for limiting the pipe on its lower end face, and the pre-tightening plate has a second half-groove for limiting the pipe on its lower end face. The lower half of the pipe limiting groove cooperates with the first half of the pipe limiting groove and the second half of the pipe limiting groove to clamp the pipe.

[0010] The lower clamp of this utility model has one of a guide post and a guide groove on its upper end surface, and the upper clamp has the other of a guide post and a guide groove on its lower end surface. The guide post and the guide groove are inserted into each other to provide guidance.

[0011] The flange shaping mechanism of this utility model includes a shaping mold and a guide post. The shaping mold has a shaping circular groove for shaping the pipe. The guide post is fixed at the center of the shaping circular groove, and the length of the guide post is greater than the depth of the shaping circular groove. The end of the pipe is guided by the guide post and axially pressed into the shaping circular groove for flange shaping. The shaped groove restricts the outer diameter of the pipe after flanging. Under the constraint of the shaped groove, the pipe end forms a flanging structure with a consistent outer diameter and uniform thickness. The structure is simple and ensures the consistency of the pipe flanging dimensions. When the pipe end is pressed into the shaped groove, the guide post can be inserted into the inner hole of the pipe to guide it and achieve radial centering positioning, ensuring the concentricity of the pipe and the shaped groove. At the same time, the axial guidance of the guide post can prevent the pipe from deflecting or misaligning during the flanging process, thereby ensuring the uniformity of wall thickness and dimensional accuracy after flanging.

[0012] The flange shaping mechanism of this utility model is provided on the support plate; the flange shaping mechanism also includes a screw and a nut, and the screw is fixed axially on the end face of the shaping mold away from the shaping groove; The support plate has a screw through hole, through which the screw passes and is threadedly connected to the nut for locking and fixing; thus, the flanging and shaping mechanism is stably fixed on the support plate.

[0013] The heating mechanism of this utility model includes a heating head, which is provided with a guide heating column. The guide heating column extends into the inner hole of the pipe to heat the end of the pipe. The guide heating column can both heat the pipe to facilitate later shaping and position the pipe.

[0014] The heating mechanism of this utility model is mounted on a support plate; the heating mechanism also includes a heat insulation sleeve, which has an internal thread; the heating head also includes a positioning section and a connecting section, one end face of the positioning section is connected to the guide heating column, and the other end face is connected to the connecting section, which has an external thread. The support plate has a heating head through hole, and the connecting section of the heating head passes through the heating head through hole and is threadedly connected to the heat insulation sleeve for locking and fixing.

[0015] The pipe clamping drive mechanism of this utility model includes a transverse drive mechanism and a longitudinal drive mechanism; The pipe clamping mechanism is driven to move longitudinally by the longitudinal movement drive mechanism, and the longitudinal movement drive mechanism and the pipe clamping mechanism are driven to move laterally by the transverse movement drive mechanism; or the pipe clamping mechanism is driven to move laterally by the transverse movement drive mechanism, and the transverse movement drive mechanism and the pipe clamping mechanism are driven to move longitudinally by the longitudinal movement drive mechanism.

[0016] The beneficial effects of this utility model are as follows: The pipe clamping drive mechanism moves the pipe clamping mechanism to automatically transfer the heated pipe to the flanging and shaping mechanism for flanging, thus automating the pipe heating-flanging process, ensuring the continuity of the production process, and improving processing efficiency. The pre-tightening plate effectively prevents pipe displacement, and the subsequent pressing of the upper clamp further tightens the pipe, better controlling the pressing quality and ensuring accurate pipe positioning. The shaping groove restricts the outer diameter of the pipe after flanging, forming a uniform outer diameter and thickness at the pipe end under the constraint of the shaping groove. This simple structure ensures consistent pipe flanging dimensions. When the pipe end is pressed into the shaping groove, the guide post can be inserted into the inner hole of the pipe, acting as a guide to achieve radial centering and ensure the concentricity of the pipe and the shaping groove. Simultaneously, the axial guidance of the guide post prevents the pipe from skewing or misaligning during flanging, thus ensuring uniform wall thickness and dimensional accuracy after flanging. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of Example 1.

[0018] Figure 2 This is a schematic diagram of the overall structure of Example 1 from another angle.

[0019] Figure 3 This is a schematic diagram of the pipe clamping drive device in Example 1.

[0020] Figure 4 This is a schematic diagram of the pipe clamping drive device from another angle in Embodiment 1.

[0021] Figure 5 This is a schematic diagram of the overall structure of the pipe clamping device in Example 1.

[0022] Figure 6 This is a schematic diagram of the overall structure of the pipe clamping device in Example 1 from another angle.

[0023] Figure 7 This is a front view of the overall structure of the pipe clamping device in Example 1.

[0024] Figure 8 yes Figure 7 Sectional view of AA.

[0025] Figure 9 This is a schematic diagram of the upper clamp structure.

[0026] Figure 10 This is a schematic diagram of the upper clamp from another angle.

[0027] Figure 11 This is the rear view of the upper clamp.

[0028] Figure 12This is a bottom view of the upper clamp.

[0029] Figure 13 This is a top view of the upper clamp.

[0030] Figure 14 This is a schematic diagram of the overall structure of the pretensioning plate.

[0031] Figure 15 This is a schematic diagram of the pre-tightening plate structure from another angle.

[0032] Figure 16 This is a schematic diagram of the structure of the upper clamp and the pre-tightening plate.

[0033] Figure 17 This is a rear view of the upper clamp engaging with the pre-tightening plate.

[0034] Figure 18 yes Figure 17 BB cross-sectional view.

[0035] Figure 19 This is a bottom view of the upper clamp and pre-tightening plate in action.

[0036] Figure 20 This is a schematic diagram of the lower fixture structure.

[0037] Figure 21 This is a top view of the lower fixture.

[0038] Figure 22 This is a schematic diagram of the overall structure of the pipe flange heating and shaping device.

[0039] Figure 23 This is another schematic diagram of the overall structure of the pipe flange heating and shaping device.

[0040] Figure 24 This is a schematic diagram of the internal structure of the pipe flange heating and shaping device.

[0041] Figure 25 This is another schematic diagram of the internal structure of the pipe flange heating and shaping device.

[0042] Figure 26 yes Figure 25 Enlarged view of point C in the middle.

[0043] Figure 27 yes Figure 25 Enlarged view of point D in the middle.

[0044] Figure 28 yes Figure 25 Main view.

[0045] Figure 29 yes Figure 28 EE section view.

[0046] Figure 30 yes Figure 29 Enlarged view of point G in the middle.

[0047] Figure 31 yes Figure 28 It is an FF sectional view.

[0048] Figure 32 yes Figure 31 Enlarged view of section H in the middle.

[0049] Figure 33 This is the front view of the pipe without flanges.

[0050] Figure 34 This is the front view of the pipe after the flange has been turned up.

[0051] Figure 35 This is a schematic diagram of the pipe after the flange of this utility model has been turned up.

[0052] Figure 36 This is a schematic diagram of the overall structure of Example 2.

[0053] Figure 37 This is a schematic diagram of the pipe clamping drive device in Example 2.

[0054] Figure 38 This is a schematic diagram of the pipe clamping drive device from another angle in Embodiment 2.

[0055] Appendix label: Pipe-1; Pipe clamping mechanism-2, clamping cylinder-201, support plate-202, pipe perforation-2021, upper clamp-203, pre-tightening plate receiving groove-2031, guide groove-2032, guide sleeve-20321, screw limiting groove-2033, upper section of limiting groove-20331, lower section of limiting groove-20332, upper mounting hole of spring-2034, upper half groove of pipe limiting groove-2035, lower clamp-204, guide Column-2041, lower half-groove of pipe limit-2042, front section of lower half-groove-20421, rear section of lower half-groove-20422, pre-tightening plate-205, threaded hole-2051, lower mounting hole of spring-2052, upper half-groove of pipe limit-2053, front section of upper half-groove-20531, rear section of upper half-groove-20532, screw-206, screw head-2061, spring-207, lower clamp fixing plate-208; Pipe clamping drive mechanism-3, transverse cylinder-301, transverse base-302, longitudinal cylinder-303, longitudinal base-304, transverse motor-305, drive screw-306, drive nut-307, slide rail-308, bearing seat-309; Pipe Flanging Heating and Shaping Mechanism-4, Housing-401, Support Plate-4011, Support Rod-4012, Heating Mechanism-402, Heating Head-4021, Guide Heating Column-40211, Positioning Section-40212, Connecting Section-40213, Heating Component-422, Insulation Sleeve-4023, Internal Thread-40231, Insulation Plate-403, Insulation Perforation-4031, Positioning Groove I-4032, Front Section of Insulation Plate-4033, Rear Section of Insulation Plate-4034, Shaping Mold-404, Shaping Circular Groove-4041, Guide Column-405, Screw-406, Nut-407, Positioning Plate-408, Screw Perforation II-4081, Positioning Groove II-4082; Pipe flanging heating and shaping drive mechanism-5, horizontal manual slide table-501, vertical manual slide table-502; base-6. Detailed Implementation

[0056] The present invention will now be described in conjunction with the accompanying drawings and embodiments.

[0057] Example 1: As attached Figure 1 - Appendix Figure 2 As shown, an automatic pipe flanging machine includes a pipe clamping mechanism 2, a pipe clamping drive mechanism 3, and a pipe flanging heating and shaping mechanism 4. The pipe flanging heating and shaping mechanism 4 includes a heating mechanism 402 and a flanging and shaping mechanism. The pipe clamping mechanism 2 clamps a pipe 1, the heating mechanism 402 heats the end of the pipe 1, and the flanging and shaping mechanism flanging the heated end of the pipe 1. The pipe clamping mechanism 2 is driven by the pipe clamping drive mechanism 3 to move to the position of the heating mechanism 402 and the flanging and shaping mechanism. The pipe clamping drive mechanism 3 drives the pipe clamping mechanism 2 to move so that the pipe 1 is automatically transferred to the flanging and shaping mechanism after heating, thereby automating the pipe heating-flanging process, ensuring the continuity of the production process and improving processing efficiency.

[0058] As attached Figure 5 - Appendix Figure 21 As shown, a pipe clamping mechanism 2 includes an upper clamp 203, a lower clamp 204, and an actuator. The upper clamp 203 is located above the lower clamp 204, and the upper clamp 203 and the lower clamp 204 are arranged vertically opposite each other. The upper clamp 203 is driven to move up and down by the actuator, which is connected to a controller. In this embodiment, the lower clamp 204 is fixed on the lower clamp fixing plate 208. The actuator can be a clamping cylinder 201, an electric push rod, a clamping hydraulic cylinder, etc., which can push the upper clamp 203 to make linear motion. In this embodiment, the actuator is a clamping cylinder 201, which is fixed by a vertically set support plate 202. The lower end of the support plate 202 is fixed on the lower clamp fixing plate 208.

[0059] In this embodiment, the controller can be a PLC controller or a controller developed based on an MCU.

[0060] The pipe clamping mechanism 2 of this application also includes a pre-tightening plate 205. A pre-tightening plate receiving groove 2031 is provided on the lower end surface of the upper clamp 203. The pre-tightening plate 205 is disposed in the pre-tightening plate receiving groove 2031. A spring 207 is provided between the pre-tightening plate 205 and the upper clamp 203. One end of the spring 207 abuts against the pre-tightening plate 205, and the other end abuts against the upper clamp 203. The pre-tightening plate 205 protrudes from the lower end surface of the upper clamp 203 in its natural state. By setting a pre-tightening plate, the pre-pressure of the pre-tightening plate can effectively prevent the pipe from shifting. Subsequently, the upper clamp presses down to tighten the pipe, which can better control the pressing quality and ensure the accuracy of pipe positioning.

[0061] The position of the pre-tightening plate receiving groove 2031 is set according to actual needs. In this embodiment, the pre-tightening plate receiving groove 2031 is opened on the rear end face of the upper clamp 203 and extends downward to the lower end face of the upper clamp 203 to form a through groove structure.

[0062] The pretensioning plate 205 has a threaded hole 2051, and the upper clamp 203 has a screw limiting groove 2033 that communicates with the pretensioning plate receiving groove 2031. The screw 206 slides in the screw limiting groove 2033, and the lower end of the screw 206 passes through the screw limiting groove 2033 and is threadedly connected to the threaded hole 2051 on the pretensioning plate 205. The upper end of the screw 206 extends outward to form a screw head 2061. In its natural state, the screw head 2061 abuts against the upper clamp 203, and the pretensioning plate 205 protrudes from the lower end face of the upper clamp 203. By using screw 206 in conjunction with pre-tightening plate 205, the upper clamp 203 can be pre-pressed by pre-tightening plate 205 when it moves down, and the upper clamp 203 can also move up to drive pre-tightening plate 205 up. At the same time, the initial position height of pre-tightening plate 205 can be adjusted by the threaded connection between screw 206 and pre-tightening plate 205.

[0063] The screw limiting groove 2033 includes an upper limiting groove section 20331 and a lower limiting groove section 20332 coaxially arranged. The inner diameter of the upper limiting groove section 20331 is larger than the inner diameter of the lower limiting groove section 20332. A screw limiting surface is formed between the upper limiting groove section 20331 and the lower limiting groove section 20332. In the natural state, the screw head 2061 abuts against the screw limiting surface.

[0064] In this embodiment, the length of the pretension plate 205 is matched with the length of the pretension plate receiving groove 2031 to ensure the stability of the upper clamp 203 and the pretension plate 205 sliding together.

[0065] To achieve the connection between the upper clamp and the pretensioning plate, this structure can also be used: a screw limiting groove is provided through the pretensioning plate 205, and the screw 206 slides in the screw limiting groove. The screw limiting groove includes an upper limiting groove section and a lower limiting groove section arranged coaxially. The inner diameter of the upper limiting groove section is smaller than the inner diameter of the lower limiting groove section, and a screw limiting surface is formed between the upper limiting groove section and the lower limiting groove section. The upper clamp 203 has a threaded hole 2051 at the top of the pre-tightening plate receiving groove 2031. The lower end of the screw 206 passes through the screw limiting groove 2033 and is threadedly connected to the threaded hole 2051 on the upper clamp 203. The upper end of the screw 206 extends outward to form a screw head 2061. In its natural state, the preload plate 205 is under downward gravity, and the screw head 2061 abuts against the screw limiting surface of the preload plate 205. The lower end face of the preload plate 205 protrudes from the lower end face of the upper clamp 203. Through the cooperation between the screw 206 and the preload plate 205, it is possible to achieve both pre-pressing by the preload plate 205 when the upper clamp 203 moves downward and to drive the preload plate 205 upward when the upper clamp 203 moves upward. The abutment between the screw 206 and the screw limiting surface ensures that the screw head 2061 will not protrude from the lower end face of the preload plate 205 when the preload plate 205 is preloaded. At the same time, the initial position height of the preload plate 205 can be adjusted through the threaded connection between the screw 206 and the upper clamp 203.

[0066] The upper surface of the pretension plate 205 is provided with a lower spring mounting hole 2052, and the upper clamp 203 is provided with an upper spring mounting hole 2034 at the top of the pretension plate receiving groove 2031. The upper end of the spring 207 extends into the upper spring mounting hole 2034, and the lower end extends into the lower spring mounting hole 2052. The upper spring mounting hole 2034 and the lower spring mounting hole 2052 can limit the two ends of the spring 207. The upper end of the spring 207 extending into the upper spring mounting hole 2034 can directly abut against the upper clamp 203 or be fixedly connected to the upper clamp 203. The lower end of the spring 207 extending into the lower spring mounting hole 2052 can directly abut against the pretension plate 205 or be fixedly connected to the pretension plate 205.

[0067] The lower clamp 204 has a lower pipe limiting groove 2042 on its upper end face to limit the pipe 1, the upper clamp 203 has a first pipe limiting groove 2035 on its lower end face to limit the pipe 1, and the pre-tightening plate 205 has a second pipe limiting groove 2053 on its lower end face. After the upper clamp 203 is driven down by the actuator, the lower pipe limiting groove 2042 cooperates with the first pipe limiting groove 2035 and the second pipe limiting groove 2053 to clamp the pipe 1.

[0068] In this embodiment, the lower half-groove 2042 of the pipe limiting extends forward to form an upper semi-annular boss 2036 on the front end face of the lower clamp 204, and the upper half-groove 2035 of the pipe limiting extends forward to form a lower semi-annular boss 2043 on the front end face of the upper clamp 203. When the upper clamp 203 moves down to clamp the pipe 1, the upper semi-annular boss 2036 and the lower semi-annular boss 2043 cooperate to form a circular boss, which facilitates the subsequent flange shaping and limiting of the pipe.

[0069] This embodiment is as shown in the appendix. Figure 20 and attached Figure 21 As shown, the lower half-groove 2042 of the tube limiting includes a front section 20421 and a rear section 20422 of the lower half-groove arranged coaxially. The rear end of the front section 20421 of the lower half-groove is connected to the front end of the rear section 20422 of the lower half-groove. The lower half-groove 2042 of the tube limiting extends through both ends of the lower clamp. The front section 20421 of the lower half-groove has a semi-circular cross-sectional shape, and the radius of the rear section 20422 of the lower half-groove increases from the front end to the rear end. As attached Figure 10 and attached Figure 12 As shown, the upper half-groove of the tube limiting groove 2035 has a semi-circular cross-sectional shape, and the upper half-groove of the tube limiting groove 2035 passes through the front and rear ends of the upper clamp 203. As attached Figure 15 As shown, the upper half-groove 2053 of the pipe limiting includes a front section 20531 and a rear section 20532 of the upper half-groove. The rear end of the front section 20531 of the upper half-groove is connected to the front end of the rear section 20532 of the upper half-groove. The upper half-groove 2053 of the pipe limiting extends through both ends of the pre-tightening plate 205. The front section 20531 of the upper half-groove has a semi-circular cross-sectional shape, and the radius of the rear section 20532 of the upper half-groove increases from the front end to the rear end. When the pre-tightening plate 205 moves down and clamps with the lower clamp 204, the front section 20531 of the upper half groove and the front section 20421 of the lower half groove cooperate to form a pre-clamping cavity, and the rear section 20532 of the upper half groove and the rear section 20422 of the lower half groove cooperate to form a gradually expanding guide channel; the setting of the gradually expanding guide channel structure facilitates the guiding, centering and positioning of the pipe.

[0070] As attached Figure 16 and attached Figure 19 As shown, when the upper clamp 203 presses the pipe 1, the upper half groove 2035 of the pipe limiting groove on the lower end face of the upper clamp 203 and the front section 20531 of the upper half groove of the pre-tightening plate 205 cooperate with the front section 20421 of the lower half groove of the lower clamp 204 to press the pipe 1; the rear section 20532 of the upper half groove of the pre-tightening plate 205 cooperates with the rear section 20422 of the lower half groove of the lower clamp 204 to form a gradually expanding guide channel.

[0071] In this embodiment, the lower clamp 204 is provided with several pipe limiting lower half grooves 2042 at intervals, and the upper clamp 203 is provided with several pipe limiting upper half grooves 2035 at intervals, and the pre-tightening plate 205 is provided with several pipe limiting upper half grooves 2053 at intervals.

[0072] This embodiment is as shown in the appendix. Figure 6 As shown, the support plate 202 is fixed at the rear end of the lower clamp 204 and the upper clamp 203. Several tube through holes 2021 are also provided on the support plate 202. The position of the tube through holes 2021 corresponds to the position of the gradually expanding guide channel, so that the tube 1 can be inserted into the pre-clamping cavity through the tube through holes 2021.

[0073] The lower clamp 204 has one of a guide post and a guide groove on its upper end surface, and the upper clamp 203 has the other of a guide post and a guide groove on its lower end surface. The guide post and the guide groove are inserted into each other to provide guidance.

[0074] In this embodiment, a guide post 2041 is provided on the upper end face of the lower clamp. The guide post is cone-shaped to facilitate guidance. A guide groove 2032 is opened on the lower end face of the upper clamp. A guide sleeve 20321 is fixedly sleeved in the guide groove 2032. When the lower clamp moves down, the guide post 2041 is inserted into the guide sleeve 20321 to guide and limit the position of the upper clamp.

[0075] As attached Figure 3 and attached Figure 4 As shown, the pipe clamping drive mechanism 3 includes a transverse drive mechanism and a longitudinal drive mechanism. The pipe clamping mechanism is driven to move longitudinally via the longitudinal drive mechanism, and the longitudinal drive mechanism and the pipe clamping mechanism are driven to move laterally via the transverse drive mechanism; or the pipe clamping mechanism is driven to move laterally via the transverse drive mechanism, and the transverse drive mechanism and the pipe clamping mechanism are driven to move longitudinally via the longitudinal drive mechanism.

[0076] In this embodiment, the lateral movement drive mechanism uses a lateral movement cylinder 301, and the longitudinal movement drive mechanism uses a longitudinal movement cylinder 303. The lateral movement cylinder 301 and the longitudinal movement cylinder 302 are respectively connected to the controller. The lateral movement drive mechanism and the longitudinal movement drive mechanism can also use other linear actuators as needed, such as electric push rods, hydraulic cylinders, etc. In this embodiment, the transverse cylinder 301 is fixed on the base 6, the piston rod of the transverse cylinder 301 is connected to the transverse base 302, the longitudinal cylinder 303 is fixed on the transverse base 302, the piston rod of the longitudinal cylinder 303 is connected to the longitudinal base 304, and the longitudinal base 304 is fixedly connected to the lower clamp fixing plate 208. The extension and retraction of the piston rod of the transverse cylinder 301 causes the pipe clamping mechanism 2 to move laterally closer to the heating mechanism 402 and the flanging and shaping mechanism. The extension and retraction of the piston rod of the longitudinal cylinder 303 causes the pipe clamping mechanism 2 to move longitudinally closer to or away from the heating mechanism 402 and the flanging and shaping mechanism.

[0077] Alternatively, the longitudinal cylinder can be positioned below as needed, and fixed on the base 6. The piston rod of the longitudinal cylinder 303 is connected to the longitudinal base. The transverse cylinder is fixed on the longitudinal base, and the piston rod of the transverse cylinder is connected to the transverse base. The transverse base is fixedly connected to the lower clamp fixing plate. The extension and retraction of the piston rod of the transverse cylinder causes the pipe clamping mechanism 2 to move laterally closer to the heating mechanism 402 and the flanging and shaping mechanism. The extension and retraction of the piston rod of the longitudinal cylinder causes the pipe clamping mechanism 2 to move longitudinally closer to or away from the heating mechanism 402 and the flanging and shaping mechanism.

[0078] In this embodiment, a magnetic switch is provided in the transverse cylinder 301 to sense the position of the piston rod.

[0079] As attached Figure 22 - Appendix Figure 32 As shown, a pipe flange heating and shaping mechanism includes a heating mechanism 402 and a flange shaping mechanism. The flange shaping mechanism includes a shaping mold 404, on which a shaping circular groove 4041 for shaping the pipe 1 is provided. After the heating mechanism 402 heats the end of the pipe 1, the end of the pipe 1 is axially pressed into the shaping circular groove 4041 for flange shaping. The setting of the shaping circular groove 4041 restricts the outer diameter of the pipe 1 after flangeing. Under the constraint of the shaping circular groove 4041, the end of the pipe 1 forms a flange structure with a consistent outer diameter and uniform thickness. The structure is simple and ensures the consistency of the flange size of the pipe.

[0080] The flanging and shaping mechanism also includes a guide post 405, which is fixed axially at the center of the shaping groove 4041. When the end of the tube 1 is pressed into the shaping groove 4041, the guide post 405 can be inserted into the inner hole of the tube 1 to guide it, achieve radial centering and positioning, and ensure the concentricity of the tube 1 and the shaping groove 4041. At the same time, the axial guidance of the guide post 405 can prevent the tube 1 from deviating or misaligning during the flanging process, thereby ensuring the uniformity of wall thickness and dimensional accuracy after flanging.

[0081] The length of the guide post 405 is greater than the depth of the shaping groove 4041; in this embodiment, the inner diameter and depth of the shaping groove 4041 are determined according to the flange size required for processing the pipe 1.

[0082] In this embodiment, the outer diameter of the annular boss is smaller than the outer diameter of the shaped circular groove 4041.

[0083] The guide post 405 adopts a conical or frustum-shaped structure. The large-diameter end of the guide post 405 is fixed in the shaping circular groove 4041, and the small-diameter end faces the pipe 1. The length of the guide post 405 is set to ensure that the pipe 1 is centered when it is initially inserted. The conical or frustum-shaped structure guides the pipe 1.

[0084] In this embodiment, a housing 401 is provided, and a support rod 4012 is fixed between the front panel and the rear panel of the housing for supporting the housing. The front panel of the housing serves as a support plate 4011, and the flange shaping mechanism is provided on the support plate 4011. The flanging and shaping mechanism also includes a screw 406 and a nut 407. The screw 406 is axially fixed on the end face of the shaping mold 404 away from the shaping groove 4041. In this embodiment, the screw 406, the shaping mold 404, and the guide post 405 are coaxially arranged, and the outer diameter of the shaping mold 404 is larger than the outer diameter of the screw 406. The support plate 4011 has a screw through hole, through which the screw 406 passes and is threadedly connected to the nut 407 for locking and fixing; thus, the flanging and shaping mechanism is stably fixed on the support plate 4011.

[0085] A positioning plate 408 is fixed on the support plate 4011. The positioning plate 408 has a second positioning groove 4082 and a second screw through hole 4081 that are connected to each other. The inner diameter of the second positioning groove 4082 matches the size of the shaping mold 404. The inner diameter of the second positioning groove 4082 is larger than the inner diameter of the second screw through hole 4081. In this embodiment, the second positioning groove 4082 and the second screw through hole 4081 are coaxially arranged and form a mold positioning surface between them. The shaping mold 404 is inserted into the second positioning groove 4082. The end face of the shaping mold 404 away from the guide post 405 abuts against the mold positioning surface. The screw 406 passes through the second screw through hole 4081 and the first screw through hole extends into the housing 401 and is threadedly connected to the nut 407. The nut 407 abuts against the support plate 4011. The flange shaping mechanism is provided with several intervals on the positioning plate 408; In this embodiment, a tube positioning surface is formed on the positioning plate 408 between adjacent flange shaping mechanisms; The positioning plate 408 not only further ensures the stability of the flange shaping mechanism, but also ensures the alignment of the ends of the pipe after being clamped by the pipe clamping mechanism. Several flange shaping mechanisms are provided to facilitate the simultaneous processing of multiple pipes 1.

[0086] In this embodiment, the positioning plate 408 is fixed to the support plate 4011 with bolts, but it can also be set to welding or other methods as needed.

[0087] The heating mechanism 402 includes a heating head 4021, which is provided with a guide heating column 40211. The guide heating column 40211 extends into the inner hole of the pipe 1 to heat the end of the pipe 1. The guide heating column 40211 can both heat the pipe to facilitate later shaping and position the pipe.

[0088] The guide heating column 40211 adopts a conical or frustoconical structure, with the small-diameter end of the guide heating column 40211 facing the pipe 1; it can guide the pipe 1, and at the same time, the large-diameter end of the guide heating column 40211 has a large cross-sectional area and high heat capacity, which can concentrate heat to quickly soften the end of the pipe (flared area), while the heat at the small-diameter end decreases, avoiding excessive heating of the non-flared area of ​​the pipe.

[0089] The heating head 4021 is heated by the heating element 4022, which is connected to the controller.

[0090] The heating mechanism 402 is mounted on the support plate 4011; the heating mechanism 402 also includes a heat insulation sleeve 4023, which has an internal thread 10231; the heating head 102 also includes a positioning section 40212 and a connecting section 40213, one end face of the positioning section 40212 is connected to the guide heating column 40211, and the other end face is connected to the connecting section 40213, which has an external thread; in this embodiment, the guide heating column 40211, the positioning section 40212, and the connecting section 40213 are coaxially arranged, and the outer diameter of the positioning section 40212 is larger than the outer diameter of the connecting section 40213; The support plate 4011 has a heating head through hole. The connecting section 40213 of the heating head 4021 passes through the heating head through hole and extends into the housing 401 to be threadedly connected and locked to the heat insulation sleeve 4023. The heat insulation sleeve 4023 abuts against the end face of the support plate 4011.

[0091] A heat insulation plate 403 is fixed on the support plate 4011. The heat insulation plate 403 has a positioning groove 4032 and a heat insulation perforation 4031 that are coaxially arranged and connected. The inner diameter of the positioning groove 4032 is larger than the inner diameter of the heat insulation perforation 4031. A positioning surface is formed between the positioning groove 4032 and the heat insulation perforation 4031. The positioning segment 40212 is inserted into the positioning groove 4032. The end face of the positioning segment 40212 away from the guide heating column 40211 abuts against the positioning surface. The connecting segment 40213 passes through the heat insulation hole 4031 and the heating head hole and is threadedly connected to the heat insulation sleeve 4023. The heat insulation sleeve 4023 abuts against the support plate 4011. The heating mechanism 402 is provided with several spaced intervals on the heat insulation plate 403; The heat insulation plate 403 can insulate multiple heating mechanisms and support plates, preventing heat conduction.

[0092] In this embodiment, the heat insulation plate 403 includes a front section 4033 and a rear section 4034. The outer diameter of the front section 4033 is larger than the outer diameter of the rear section 4034. A heat insulation limiting surface is formed between the front section 4033 and the rear section 4034. The rear section 4034 is inserted into the heating head through hole of the support plate 4011, and the heat insulation limiting surface abuts against the support plate 4011, further achieving heat insulation for the support plate 4011.

[0093] In this embodiment, after the heat insulation plate 403 and the support plate 4011 are inserted and matched, the stability of the heat insulation plate 403 is ensured by bolts or welding.

[0094] In this embodiment, the heating mechanism uses a soldering iron. The heating element can be a resistance wire heating element or a high-frequency induction heating element to heat the soldering iron tip. The structure and heating method of the soldering iron are existing technologies and will not be described in detail here. The heating mechanism can also use a hot air gun, infrared heating, etc.

[0095] In this embodiment, the controller can be a PLC controller or a controller developed based on an MCU to control the operation of the heating element.

[0096] This embodiment also includes a pipe flanging heating and shaping drive mechanism 5, which is located at the lower end of the pipe flanging heating and shaping mechanism 4. The pipe flanging heating and shaping drive mechanism 5 includes a horizontal manual slide 501 and a vertical manual slide 502. The horizontal manual slide 501 fine-tunes the horizontal position of the pipe flanging heating and shaping mechanism 4, and the vertical manual slide 502 fine-tunes the vertical position of the pipe flanging heating and shaping mechanism 4. In this embodiment, the horizontal manual slide 501 is fixed on the base 6, and the vertical manual slide 502 is fixed on the base 6. The manual slide 502 is fixed on the horizontal manual slide 501, and the housing 401 of the pipe flanging heating and shaping mechanism is fixed on the vertical manual slide 502. Alternatively, the vertical manual slide 502 can be fixed on the base 6, the horizontal manual slide 501 can be fixed on the vertical manual slide 502, and the housing 401 of the pipe flanging heating and shaping mechanism can be fixed on the horizontal manual slide 501. The structures of the horizontal manual slide 501 and the vertical manual slide 502 are existing technologies and will not be described in detail here.

[0097] In this embodiment, a power switch, a one-button start button, and a pre-clamping button are installed on the base, and the three buttons are controlled by the controller.

[0098] When using this utility model: 1. Turn on the power switch, reset the system, and ensure that the longitudinal cylinder 303 and the pipe clamping mechanism 2 are in the origin position (the clamping cavity corresponds to the pipe positioning surface on the positioning plate. In this embodiment, the piston rod of the transverse cylinder 301 is in the retracted state. It can also be set to the extended state when the transverse cylinder is in the origin position as needed). At this time, when the pipe clamping mechanism 2 is in the open state, the lower end face of the screw head 2061 abuts against the screw limiting surface of the screw limiting groove 2033. In the natural state, the lower end face of the pre-tightening plate 205 protrudes from the lower end face of the upper clamp 203. 2. Click the "Pre-clamp" button on the base. The controller controls the piston rod of the clamping cylinder 201 to extend, driving the upper clamp 203 to move down. The upper clamp 203 moves down, causing the pre-clamping plate 205 to move down. The front section 20531 of the upper half groove on the lower end surface of the pre-clamping plate 205 cooperates with the front section 20421 of the lower half groove of the lower clamp 204 to form a pre-clamping cavity. The rear section 20532 of the upper half groove cooperates with the rear section 20422 of the lower half groove to form a gradually expanding guide channel. The controller controls the clamping cylinder 201 to stop moving. 3. The pipe 1 is inserted into the pre-clamping cavity through the pipe through hole 2021 of the support plate 202 via the gradually expanding guide channel. Due to the elastic force of the spring, the pipe can pass through the pre-clamping cavity, and the pre-tightening plate 205 can press the pipe 1 tightly. The end of the pipe extends out of the front end face of the upper clamp and the lower clamp. 4. After several pipes are placed, click the "One-click Start" button on the base. The controller controls the piston rod of the longitudinal cylinder 303 to extend, driving the pipe clamping mechanism 2 to move forward toward the pipe positioning surface. The end of the pipe abuts against the pipe positioning surface. The piston rod of the longitudinal cylinder 303 continues to extend, driving the pipe clamping mechanism 2 to move forward. Under the thrust of the pipe positioning surface, the pipe moves backward in the pre-clamping cavity (because the pre-tightening plate 205 is connected to the spring 207, the pipe can move backward in the pre-clamping cavity under the elastic force of the spring 207) so that the end of the pipe is aligned and the length of the pipe extending out of the clamp is the set threshold. At this time, the controller controls the longitudinal cylinder to stop. 5. The piston rod of the clamping cylinder 201 continues to extend, and the upper clamp 203 continues to move downward under the drive of the clamping cylinder 201. The upper half groove 2035 of the pipe limiting groove on the lower end face of the upper clamp 203 contacts the pipe 1. The upper half groove 2035, the front section 20531 of the upper half groove, and the front section 20421 of the lower half groove form a clamping cavity to clamp the pipe 1, and the clamping cylinder stops. During this process, the spring is compressed, and the screw head 2061 slides with the upper section 20331 of the limiting groove of the pre-tightening plate. The lower end face of the screw head 2061 disengages from the screw limiting surface. 6. The piston rod of the longitudinal cylinder 303 retracts, driving the pipe clamping mechanism to move backward (the working order of steps 5 and 6 can be interchanged or performed simultaneously). 7. The piston rod of the transverse cylinder 301 extends, driving the longitudinal cylinder 303 and the pipe clamping mechanism 2 to move laterally, so that the pipe is directly facing the heating head 4021 of the heating mechanism. The transverse cylinder stops. At this time, the controller has controlled the heating element to heat the heating head 4021, and the temperature of the heating head 4021 reaches the temperature that softens the pipe. 8. The piston rod of the longitudinal cylinder 303 extends, driving the pipe clamping mechanism 2 to move forward toward the heating mechanism 402, so that the end of the pipe 1 is inserted into the guide heating column 40211. At this time, the longitudinal cylinder 303 stops and performs the first stage of heating. After a delay of M seconds, the piston rod of the longitudinal cylinder 303 continues to extend, driving the pipe clamping mechanism to continue forward to the set position. Then the longitudinal cylinder stops and performs the second stage of heating (so that the end of the pipe forms an outward flared horn shape). After a delay of N seconds, the piston rod of the longitudinal cylinder 303 retracts, so that the end of the pipe 1 is dislodged from the guide heating column 40211. 9. The piston rod of the transverse cylinder 301 retracts, driving the longitudinal cylinder 303 and the pipe clamping mechanism 2 to move laterally until they reach the magnetic switch position. The transverse cylinder 301 stops moving. At this time, the position of the pipe 1 held by the pipe clamping mechanism 2 is directly opposite the shaping groove 4041 of the flange shaping mechanism. The piston rod of the longitudinal cylinder 303 extends, driving the pipe clamping mechanism 2 to move forward toward the shaping groove 4041, so that the end of the heated pipe 1 is inserted into the guide post 405. 10. The longitudinal cylinder 303 continues to drive the pipe clamping mechanism 2 forward, so that the end of the pipe 1 is pressed into the shaping groove 4041 of the shaping mold 404. At this time, the annular boss is inserted into the shaping groove 4041. The controller controls the distance that the longitudinal cylinder 303 moves forward so that the end of the pipe 1 is pressed into the shaping groove 4041 for flanging. The outer diameter of the end of the pipe 1 after flanging matches the inner diameter of the shaping groove 4041. The front end of the annular boss is used to shape and position the outer flange of the end of the pipe. The longitudinal cylinder stops. 11. After the end of pipe 1 is flanged and shaped, the longitudinal cylinder 303 drives the pipe clamping mechanism 2 to move backward, so that the end of pipe 1 is separated from the guide post 405. 12. The transverse cylinder 301 drives the longitudinal cylinder 303 and the pipe clamping mechanism 2 back to the original position; 13. The piston rod of the clamping cylinder 201 retracts, causing the upper clamp 203 to move upward. At this time, the screw head 2061 slides and engages with the upper section 20331 of the limiting groove of the upper clamp 203 and finally abuts against the screw limiting surface. When the screw head 2061 abuts against the screw limiting surface, the upper clamp 203 continues to move upward, which can drive the pre-tightening plate 205 to move upward, and the pipe 1 can be taken out from the lower clamp 204.

[0099] Example 2: The difference between Example 2 and Example 1 lies in the structure of the pipe clamping drive mechanism 3. The pipe clamping drive mechanism 3 includes a transverse drive mechanism and a longitudinal drive mechanism. In this example, the longitudinal drive mechanism uses a longitudinal cylinder, but linear actuators such as electric push rods or hydraulic cylinders can also be used as needed. The transverse drive mechanism includes a transverse motor 305, a drive screw 306, a drive nut 307, and a bearing seat 309. The two ends of the drive screw 306 are connected to the bearing seat 309 via bearings, and the bearing seat 309 is fixed on the base 6. The drive nut 307 is threadedly connected to the drive screw 306. The transverse motor 305 is located at one end of the drive screw 306 and connected to the drive screw 306. The transverse motor 305 is connected to the controller. The drive nut 307 is connected to the longitudinal cylinder 303. The pipe clamping mechanism 2 is driven to move longitudinally by the longitudinal cylinder 303.

[0100] In this embodiment, the piston rod of the longitudinal cylinder 303 is connected to the longitudinal base 304, and the lower clamp fixing plate 208 is fixed on the longitudinal base 304; In this embodiment, a horizontally arranged slide rail 308 is fixed on the base 6 between two bearing seats 309, and the bottom of the drive nut 307 slides in cooperation with the slide rail 308; this further ensures the stability of the lateral movement of the drive nut.

[0101] The rotation of the motor shaft of the transverse motor 305 drives the drive screw 306 to rotate, and the rotation of the drive screw 306 drives the drive nut 307 to move laterally along the slide rail 308 to realize the transverse movement of the pipe clamping mechanism 2.

[0102] In this embodiment, photoelectric sensors are provided at both ends of the drive screw, including an origin sensor and a limit sensor. In this embodiment, the origin sensor is positioned directly opposite the positioning surface of the pipe, and the limit sensor is positioned directly opposite the heating head of the heating mechanism.

[0103] When using this utility model: 1. Turn on the power switch and the system will reset. Ensure that the longitudinal cylinder 303 and the pipe clamping mechanism 2 are at the origin position (the clamping cavity corresponds to the pipe positioning surface on the positioning plate). At this time, when the pipe clamping mechanism 2 is in the open state, the lower end face of the screw head 2061 abuts against the screw limiting surface of the screw limiting groove 2033. In the natural state, the lower end face of the pre-tightening plate 205 protrudes from the lower end face of the upper clamp 203. 2. Click the "Pre-clamp" button on the base. The controller controls the piston rod of the clamping cylinder 201 to extend, driving the upper clamp 203 to move down. The upper clamp 203 moves down, causing the pre-clamping plate 205 to move down. The front section 20531 of the upper half groove on the lower end surface of the pre-clamping plate 205 cooperates with the front section of the lower half groove of the lower clamp to form a pre-clamping cavity. The rear section 20532 of the upper half groove cooperates with the rear section of the lower half groove to form a gradually expanding guide channel. The controller controls the clamping cylinder 201 to stop moving. 3. The pipe 1 is inserted into the pre-clamping cavity through the pipe through hole 2021 of the support plate 202 via the gradually expanding guide channel. Due to the elastic force of the spring 207, the pipe can pass through the pre-clamping cavity, and the pre-tightening plate 205 can press the pipe tightly. The end of the pipe extends out of the front end face of the upper clamp and the lower clamp. 4. After several pipes are placed, click the "One-click Start" button on the base. The controller controls the piston rod of the longitudinal cylinder 303 to extend, driving the pipe clamping mechanism 2 to move forward toward the pipe positioning surface. The end of the pipe abuts against the pipe positioning surface. The piston rod of the longitudinal cylinder 303 continues to extend, driving the pipe clamping mechanism to move forward. Under the thrust of the pipe positioning surface, the pipe moves backward in the pre-clamping cavity (because the pre-tightening plate is connected to the spring, the pipe can move backward in the pre-clamping cavity under the elastic force of the spring) so that the end of the pipe is aligned and the length of the pipe extending out of the clamp is the set threshold. At this time, the longitudinal cylinder stops. 5. The piston rod of the clamping cylinder 201 continues to extend, and the upper clamp 203 continues to move downward under the drive of the clamping cylinder 201. The upper half groove 2035 of the pipe limiting groove on the lower end face of the upper clamp 203 contacts the pipe 1. The upper half groove 2035, the front section 20531 of the upper half groove, and the front section 20421 of the lower half groove form a clamping cavity to clamp the pipe 1, and the clamping cylinder stops. During this process, the spring is compressed, and the screw head 2061 slides with the upper section 20331 of the limiting groove of the pre-tightening plate. The lower end face of the screw head 2061 disengages from the screw limiting surface. 6. The piston rod of the longitudinal cylinder 303 retracts, driving the pipe clamping mechanism to move backward (the working order of steps 5 and 6 can be interchanged or performed simultaneously). 7. The transverse motor 305 drives the drive screw 306 to rotate in the forward direction, which drives the longitudinal cylinder 303 and the pipe clamping mechanism to move laterally. When the drive nut 307 reaches the position of the limit sensor, the transverse motor 305 stops working, so that the pipe is directly facing the heating head of the heating mechanism. At this time, the controller has controlled the heating element to heat the heating head, and the temperature of the heating head reaches the temperature that softens the pipe. 8. The piston rod of the longitudinal displacement cylinder 303 extends, driving the pipe clamping mechanism 2 to move forward toward the heating mechanism 402, so that the end of the pipe 1 is inserted into the guide heating column 40211. The longitudinal displacement cylinder stops, and the first stage of heating is performed. After a delay of M seconds, the piston rod of the longitudinal displacement cylinder 303 continues to extend, driving the pipe clamping mechanism to continue forward to the set position. After that, the longitudinal displacement cylinder stops, and the second stage of heating is performed (so that the end of the pipe forms an outward flared horn shape). After a delay of N seconds, the piston rod of the longitudinal displacement cylinder retracts, so that the end of the pipe 1 is dislodged from the guide heating column 40211. 9. The transverse motor 305 drives the drive screw 306 to rotate in the opposite direction, which drives the longitudinal cylinder 303 and the pipe clamping mechanism 2 to move laterally until they reach the position directly opposite the shaping groove 4041. The transverse motor stops. At this time, the position of the pipe 1 held by the pipe clamping mechanism 2 is directly opposite the shaping groove 4041 of the flange shaping mechanism. The piston rod of the longitudinal cylinder 303 extends and drives the pipe clamping mechanism 2 to move forward in the direction of the shaping groove 4041, so that the end of the heated pipe 1 is inserted into the guide post 405. 10. The longitudinal cylinder 303 continues to drive the pipe clamping mechanism 2 forward, so that the end of the pipe 1 is pressed into the shaping groove 4041 of the shaping mold 404. At this time, the annular boss is inserted into the shaping groove 4041, and the end of the pipe 1 is flanged in the shaping groove 4041. The outer diameter of the flanged end of the pipe 1 matches the inner diameter of the shaping groove 4041. The front end of the annular boss is used to shape and position the outer flange of the pipe end. After a delay of T seconds, the longitudinal cylinder stops. 11. After the end of pipe 1 is flanged and shaped, the longitudinal cylinder 303 drives the pipe clamping mechanism 2 to move backward, so that the end of pipe 1 is separated from the guide post 405. 12. The transverse motor 305 drives the drive screw 306 to rotate, which in turn drives the longitudinal cylinder 303 and the pipe clamping mechanism 2 back to the original position. 13. The piston rod of the clamping cylinder 201 retracts, causing the upper clamp 203 to move upward. At this time, the screw head 2061 slides and engages with the upper section 20331 of the limiting groove of the upper clamp 203 and finally abuts against the screw limiting surface. When the screw head 2061 abuts against the screw limiting surface, the upper clamp 203 continues to move upward, which can drive the pre-tightening plate 205 to move upward, and the pipe 1 can be taken out from the lower clamp 204.

Claims

1. An automatic pipe flanging machine, characterized in that: The device includes a pipe clamping mechanism, a pipe clamping drive mechanism, and a pipe flanging heating and shaping mechanism. The pipe flanging heating and shaping mechanism includes a heating mechanism and a flanging shaping mechanism. The pipe clamping mechanism clamps the pipe, the heating mechanism heats the end of the pipe, and the flanging shaping mechanism flanging the heated end of the pipe. The pipe clamping mechanism is driven by the pipe clamping drive mechanism to move to the position of the heating mechanism and the flanging shaping mechanism.

2. The automatic pipe flanging machine according to claim 1, characterized in that: The pipe clamping mechanism includes an upper clamp, a lower clamp, an actuator, and a pre-tightening plate. The upper clamp is located above the lower clamp and is driven to move up and down by the actuator. A pre-tightening plate receiving groove is provided on the lower end face of the upper clamp, the pre-tightening plate is disposed in the pre-tightening plate receiving groove, a spring is provided between the pre-tightening plate and the upper clamp, one end of the spring abuts against the pre-tightening plate and the other end abuts against the upper clamp, and the pre-tightening plate protrudes from the lower end face of the upper clamp in its natural state.

3. The automatic pipe flanging machine according to claim 2, characterized in that: The pipe clamping mechanism is also provided with a screw, the upper end of which extends outward to form a screw head; The pretensioning plate has a threaded hole, and the upper clamp has a screw limiting groove that communicates with the pretensioning plate receiving groove. The screw limiting groove includes an upper limiting groove section and a lower limiting groove section arranged coaxially. The inner diameter of the upper limiting groove section is larger than the inner diameter of the lower limiting groove section. A screw limiting surface is formed between the upper limiting groove section and the lower limiting groove section. The lower end of the screw passes through the screw limiting groove and is threadedly connected to the threaded hole on the pretensioning plate. Alternatively, the upper clamp has a threaded hole at the top of the pretensioning plate receiving groove, and the pretensioning plate has a screw limiting groove that penetrates the pretensioning plate. The screw limiting groove includes an upper limiting groove section and a lower limiting groove section arranged coaxially. The inner diameter of the upper limiting groove section is smaller than the inner diameter of the lower limiting groove section. A screw limiting surface is formed between the upper limiting groove section and the lower limiting groove section. The lower end of the screw passes through the screw limiting groove and is threadedly connected to the threaded hole on the upper clamp. In its natural state, the screw head rests against the screw limiting surface, and the preload plate protrudes from the lower end face of the upper clamp. When the upper clamp moves down, the upper clamp drives the pre-tightening plate to move down. When the pre-tightening plate contacts the pipe and applies pre-tightening force, the screw slides into the screw limiting groove.

4. An automatic pipe flanging machine according to claim 2 or 3, characterized in that: The pre-tightening plate receiving groove is opened on the rear end face of the upper clamp and extends downward to the lower end face of the upper clamp, forming a through groove structure; The lower clamp has a lower half-groove for limiting the pipe on its upper end face, the upper clamp has a first half-groove for limiting the pipe on its lower end face, and the pre-tightening plate has a second half-groove for limiting the pipe on its lower end face. The lower half of the pipe limiting groove cooperates with the first half of the pipe limiting groove and the second half of the pipe limiting groove to clamp the pipe.

5. An automatic pipe flanging machine according to claim 2 or 3, characterized in that: The lower clamp has one of a guide post and a guide groove on its upper end surface, and the upper clamp has the other of a guide post and a guide groove on its lower end surface. The guide post and the guide groove are inserted into each other.

6. An automatic pipe flanging machine according to claim 1, 2, or 3, characterized in that: The flanging and shaping mechanism includes a shaping mold and a guide post. The shaping mold has a shaping circular groove for shaping the pipe. The guide post is fixed at the center of the shaping circular groove, and the length of the guide post is greater than the depth of the shaping circular groove. The end of the pipe is guided by a guide post and axially pressed into a shaping groove for flanging and shaping.

7. The automatic pipe flanging machine according to claim 6, characterized in that: The flange shaping mechanism is mounted on the support plate; The flanging and shaping mechanism also includes a screw and a nut, wherein the screw is axially fixed on the end face of the shaping mold away from the shaping groove; The support plate has a screw through hole, through which the screw passes and is threadedly connected to the nut for locking and fixing.

8. An automatic pipe flanging machine according to claim 1, 2, 3, or 7, characterized in that: The heating mechanism includes a heating head, which is provided with a guide heating column that extends into the inner hole of the pipe to heat the end of the pipe.

9. An automatic pipe flanging machine according to claim 8, characterized in that: The heating mechanism is mounted on the support plate; The heating mechanism also includes a heat insulation sleeve, which has an internal thread. The heating head further includes a positioning section and a connecting section. One end face of the positioning section is connected to the guide heating column, and the other end face is connected to the connecting section. The connecting section is provided with external threads. The support plate has a heating head through hole, and the connecting section of the heating head passes through the heating head through hole and is threadedly connected to the heat insulation sleeve for locking and fixing.

10. An automatic pipe flanging machine according to claim 1, 2, 3, 7, or 9, characterized in that: The pipe clamping drive mechanism includes a transverse drive mechanism and a longitudinal drive mechanism; The pipe clamping mechanism is driven to move longitudinally by the longitudinal movement drive mechanism, and the longitudinal movement drive mechanism and the pipe clamping mechanism are driven to move laterally by the transverse movement drive mechanism; or the pipe clamping mechanism is driven to move laterally by the transverse movement drive mechanism, and the transverse movement drive mechanism and the pipe clamping mechanism are driven to move longitudinally by the longitudinal movement drive mechanism.

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