Intermediate-frequency hot bending machine applied to rectangular pipe bending and twisting

Abstract

The utility model relates to a medium-frequency hot bending machine applied to rectangular pipe bending and twisting, which is characterized by comprising a fixed support, a feeding support, a chain feeding conveying mechanism, a sliding disc, a heating coil, an adjusting support assembly, a track, a pull rod and a movable support assembly, a through groove for a rectangular pipe to penetrate through is formed in the fixed support, the chain feeding conveying mechanism is installed on the feeding support, the sliding disc is connected with the chain feeding conveying mechanism, and a first connecting groove matched with the rectangular pipe is formed in the sliding disc. The heating coil is located right in front of the through groove and connected with the fixed support through a height adjusting mechanism. The hydraulic machine is installed on the supporting base, the connecting base is rotated while the pipe is bent through the hydraulic machine, the rectangular pipe is twisted while being bent, and the function of improving the practical performance is achieved.

Description

Technical Field

[0001] The utility model relates to a pipe bending device, in particular to a medium frequency hot bending machine used for bending and twisting rectangular pipes. Background Art

[0002] Before the steel mold is welded and formed, the rectangular tube needs to be bent and twisted first. However, the existing tube bending machine can only bend the rectangular tube but cannot twist it. Moreover, the existing tube bending machine is often a cold bending operation, and its bending efficiency is relatively low and cannot meet the needs. Therefore, in order to solve the above problems, it is particularly important to design a medium-frequency hot bending machine for rectangular tube bending and twisting. Summary of the Invention

[0003] In order to solve the above problems, the utility model designs a medium frequency hot bending machine for rectangular tube bending and twisting. A heating coil is provided in front of the through slot of the fixed support. The coil heats the bent portion of the rectangular tube while bending the tube, thereby improving the tube bending efficiency and increasing the practical performance.

[0004] In order to solve the above technical problems, the utility model provides a medium frequency hot bending machine for rectangular tube bending and twisting, which is characterized by comprising a fixed support, a feed support, a chain feed conveying mechanism, a sliding plate, a heating coil, an adjustment support assembly, a track, a pull rod and a movable support assembly, wherein the fixed support is arranged at the front end of the feed support and is fixedly connected thereto, a through slot for the rectangular tube to pass through is provided on the fixed support, the chain feed conveying mechanism is installed on the feed support, the sliding plate is connected to the chain feed conveying mechanism and is provided with a first connecting slot matching the rectangular tube, and the first connecting slot on the sliding plate is facing The through slot on the fixed support, the heating coil is located directly in front of the through slot and is connected to the fixed support through a height adjustment mechanism, the track is arranged horizontally and one end of it is fixed to the front side of the fixed support, the adjustment support assembly is installed on the track by bolts, one end of the pull rod is detachably connected to the adjustment support assembly, and the other end of the pull rod is connected to the movable support assembly. The movable support assembly is also provided with a second connecting slot matching the rectangular tube, and one end of the rectangular tube passes through the through slot and the heating coil under the action of the sliding disk and extends into the second connecting slot. The movable support assembly is deflected by the movable support assembly under the push of the rectangular tube.

[0005] Further: the chain feeding and conveying mechanism includes a chain, a servo motor, a chain driving wheel, a chain driven wheel, a first rotating shaft, a second rotating shaft and a chain transmission wheel, the sliding plate is connected to the two chains through chain connecting parts arranged on the left and right sides, the feeding bracket is composed of an upper bracket and a lower bracket connected together up and down, a chain driven wheel is respectively installed at the front and rear ends of the upper bracket relative to the position of the two chains, the first rotating shaft and the second rotating shaft are respectively installed at the front and rear ends of the lower bracket, a chain driving wheel is respectively installed on the first rotating shaft relative to the position of the two chains, and a chain transmission wheel is respectively installed on the second rotating shaft relative to the position of the two chains, and the servo motor is connected to the first rotating shaft.

[0006] Furthermore: a guide groove is respectively provided in the side walls on the left and right sides of the through groove, and a limit clamp is movably connected in the guide groove. A threaded hole is respectively provided on the outer walls on the left and right sides of the fixed support at a position opposite to the guide groove. The threaded hole is connected to the guide groove and an adjusting screw is connected therein. One end of the adjusting screw passes through the threaded hole and extends into the guide groove and is movably connected to the limit clamp. Under the action of the adjusting screw, the two limit clamps limit the left and right positions of the rectangular tube passing through the through groove.

[0007] Furthermore: the height adjustment mechanism includes a coil mounting shell, a rack, a gear and a lifting servo motor. A third rotating shaft is horizontally installed on the front side wall of the fixed support above the through slot. Two racks are connected to the bottom of the coil mounting shell. The lower ends of the racks are tightly attached to the front end surface of the fixed support and pass through the gap between the third rotating shaft and the fixed support. A gear is installed on the third rotating shaft relative to the position of the two racks. The two gears are respectively engaged with the two racks. The lifting servo motor is installed on the front end surface of the fixed support and connected to the third rotating shaft. A rectifier coil is installed in the coil mounting shell, and the rectifier coil is electrically connected to the heating coil.

[0008] Furthermore: the adjustment support assembly is composed of a mounting seat, an adjustment support and a pipe clamp. The mounting seat can be translated along the track and fixed by bolts. The adjustment support is rotatably connected to the mounting seat. The pipe clamp is arranged on one side of the adjustment support. One end of the pull rod passes through the pipe clamp and is fastened to it by a threaded assembly.

[0009] Furthermore: the movable support assembly includes a support seat, an end plate, a connecting frame, a mounting tube and a connecting seat, and a universal wheel is provided at each of the four corners of the bottom of the support seat. Two end plates are relatively provided on the top of the support seat, and the mounting tube is fixed between the two end plates. The other end of the pull rod is connected to the mounting tube through the connecting frame. The connecting seat is installed in the mounting tube and is restricted in the mounting tube by the two end plates on the front and rear sides. The second connecting groove is opened at one end of the connecting seat, and one of the end plates is provided with a second through groove for the rectangular tube to pass through.

[0010] Going further: a hydraulic press is installed on the support seat, and the hydraulic press is movably connected to the support seat. The output shaft end of the hydraulic press is connected to the connecting seat through a transmission plate. A notch for the transmission plate to pass through is opened on the side wall of the mounting cylinder, and one end of the transmission plate extends into the mounting cylinder along the notch and is connected to the connecting seat.

[0011] After adopting the above structure, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model is provided with a heating coil before the through groove of the fixed support, and the coil heats the bent portion of the rectangular tube while bending the tube, thereby improving the tube bending efficiency.

[0013] 2. The utility model has a hydraulic press installed on the support seat. The hydraulic press rotates the connecting seat while bending the pipe, so that the rectangular pipe is bent and twisted at the same time, which increases the practical performance.

[0014] 3. The utility model can control the bending radius of the bent pipe by controlling the length of the pull rod passing through the pipe clamp, thereby increasing practical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 for Figure 1 A magnified view of center.

[0018] Figure 3 for Figure 1 Magnified view of B.

[0019] Figure 4 This is a structural diagram of the movable support assembly.

[0020] In the figure: 1 is a fixed support, 2 is a feed bracket, 3 is a sliding plate, 4 is a heating coil, 5 is a chain, 6 is a track, 7 is a pull rod, 9 is a servo motor, 10 is a limit clamp, 11 is an adjusting screw, 12 is a coil mounting housing, 13 is a rack, 14 is a gear, 15 is a third rotating shaft, 16 is a rectifier coil, 17 is a mounting seat, 18 is an adjusting support, 19 is a pipe clamp, 20 is a support seat, 21 is an end plate, 22 is a connecting frame, 23 is a mounting cylinder, 24 is a connecting seat, 25 is a universal wheel, 26 is a hydraulic press, and 27 is a transmission plate. DETAILED DESCRIPTION

[0021] like Figure 1 The medium frequency hot bending machine shown in the figure is used for bending and twisting rectangular tubes, including a fixed support 1, a feed support 2, a chain feed conveying mechanism, a sliding plate 3, a heating coil 4, an adjustment support assembly, a track 6, a pull rod 7 and a movable support assembly. The fixed support is arranged at the front end of the feed support and is fixedly connected to it. A through groove for the rectangular tube to pass through is provided on the fixed support. The chain feed conveying mechanism is installed on the feed support 2. The sliding plate is connected to the chain feed conveying mechanism and is provided with a first connecting groove matching the rectangular tube. The first connecting groove on the sliding plate is opposite to the through groove on the fixed support. The heating coil is located directly in front of the through-slot and is connected to the fixed support via a height adjustment mechanism. The track is arranged horizontally and one end of the track is fixed to the front side of the fixed support. The adjustable support assembly is mounted on the track via bolts. One end of the pull rod is detachably connected to the adjustable support assembly, and the other end of the pull rod is connected to the movable support assembly. The movable support assembly also has a second connecting slot that matches the rectangular tube. One end of the rectangular tube passes through the through-slot and the heating coil under the action of the sliding disk and extends into the second connecting slot. The movable support assembly is deflected by the movable support assembly under the push of the rectangular tube. During operation, the rear end of the rectangular tube is first inserted into the first connecting slot, and the front end of the rectangular tube passes through the heating coil and inserts into the second connecting slot. The chain feed conveyor mechanism is activated, and the rectangular tube is conveyed forward by the sliding disk. Due to the restriction of the adjustable support assembly, the heated rectangular tube automatically bends during the forward movement. The utility model is provided with a heating coil in front of the through-slot of the fixed support. The coil heats the bent portion of the rectangular tube while bending the tube, thereby improving the tube bending efficiency.

[0022] like Figure 1The chain feeding and conveying mechanism shown includes a chain 5, a servo motor 9, a chain driving wheel, a chain driven wheel, a first rotating shaft, a second rotating shaft and a chain transmission wheel. The sliding plate is connected to the two chains through chain connecting members arranged on the left and right sides. The feeding bracket is composed of an upper bracket and a lower bracket connected together up and down. A chain driven wheel is respectively installed at the front and rear ends of the upper bracket relative to the position of the two chains. The first rotating shaft and the second rotating shaft are respectively installed at the front and rear ends of the lower bracket. A chain driving wheel is respectively installed on the first rotating shaft relative to the position of the two chains. A chain transmission wheel is respectively installed on the second rotating shaft relative to the position of the two chains. The servo motor is connected to the first rotating shaft.

[0023] like Figure 1 A guide groove is provided in each of the side walls on the left and right sides of the through slot, and a limit clamp 10 is movably connected in the guide groove. A threaded hole is provided on the outer walls on the left and right sides of the fixed support at a position opposite to the guide groove. The threaded hole is connected to the guide slot and an adjusting screw 11 is connected therein. One end of the adjusting screw passes through the threaded hole and extends into the guide slot and is movably connected to the limit clamp. Under the action of the adjusting screw, the two limit clamps limit the left and right positions of the rectangular tube passing through the through slot.

[0024] like Figure 1 and Figure 2 The height adjustment mechanism shown includes a coil mounting shell 12, a rack 13, a gear 14 and a lifting servo motor. A third rotating shaft 15 is horizontally installed on the front side wall of the fixed support above the through slot. Two racks are connected to the bottom of the coil mounting shell. The lower ends of the racks are tightly attached to the front end surface of the fixed support and pass through the gap between the third rotating shaft and the fixed support. A gear is installed on the third rotating shaft relative to the position of the two racks. The two gears are respectively engaged with the two racks. The lifting servo motor is installed on the front end surface of the fixed support and connected to the third rotating shaft. A rectifier coil 16 is installed in the coil mounting shell, and the rectifier coil is electrically connected to the heating coil.

[0025] like Figure 1 、 Figure 3 The illustrated adjustable support assembly consists of a mounting base 17, an adjustable support 18, and a pipe clamp 19. The mounting base can translate along the track and is secured with bolts. The adjustable support is rotatably connected to the mounting base. The pipe clamp is positioned on one side of the adjustable support. One end of a tie rod passes through the pipe clamp and is fastened to it via a threaded assembly. This utility model allows the bending radius of the pipe to be controlled by adjusting the length of the tie rod passing through the pipe clamp, thereby increasing practicality.

[0026] like Figure 1 and Figure 4The movable support assembly shown includes a support base 20, an end plate 21, a connecting frame 22, a mounting tube 23, and a connecting base 24. A universal wheel 25 is provided at each of the four corners of the bottom of the support base. Two end plates are provided on the top of the support base. The mounting tube is fixed between the two end plates. The other end of the pull rod is connected to the mounting tube via a connecting frame. The connecting base is installed in the mounting tube and is confined within the mounting tube by two end plates on both sides. The second connecting groove is provided at one end of the connecting base, and one of the end plates is provided with a second through groove for the rectangular tube to pass through. A hydraulic press 26 is installed on the support base. The hydraulic press is movably connected to the support base. The output shaft end of the hydraulic press is connected to the connecting base via a transmission plate 27. A notch is provided on the side wall of the mounting tube for the transmission plate to pass through. One end of the transmission plate extends into the mounting tube along the notch and connects to the connecting base. The utility model installs a hydraulic press on the support base. The hydraulic press rotates the connecting base while bending the tube, causing the rectangular tube to bend and twist simultaneously, thereby increasing practical performance.

[0027] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A medium frequency hot bending machine used for bending and twisting rectangular tubes, characterized by: The invention comprises a fixed support (1), a feed bracket (2), a chain feed conveying mechanism, a sliding plate (3), a heating coil (4), an adjustment support assembly, a track (6), a pull rod (7) and a movable support assembly, wherein the fixed support is arranged at the front end of the feed bracket and is fixedly connected thereto, the fixed support is provided with a through slot for a rectangular tube to pass through, the chain feed conveying mechanism is installed on the feed bracket (2), the sliding plate is connected to the chain feed conveying mechanism and is provided with a first connecting slot matching the rectangular tube, the first connecting slot on the sliding plate is opposite to the through slot on the fixed support, and the The heating coil is located directly in front of the through slot and is connected to the fixed support through a height adjustment mechanism. The track is arranged horizontally and one end of it is fixed to the front side of the fixed support. The adjustment support assembly is installed on the track by bolts. One end of the pull rod is detachably connected to the adjustment support assembly, and the other end of the pull rod is connected to the movable support assembly. The movable support assembly is also provided with a second connecting groove matching the rectangular tube. One end of the rectangular tube passes through the through slot and the heating coil under the action of the sliding disk and extends into the second connecting groove. The movable support assembly is deflected by the movable support assembly under the push of the rectangular tube.

2. The medium frequency hot bending machine for rectangular tube bending and twisting according to claim 1, characterized in that: The chain feeding and conveying mechanism comprises a chain (5), a servo motor (9), a chain driving wheel, a chain driven wheel, a first rotating shaft, a second rotating shaft and a chain transmission wheel, the sliding plate is connected to the two chains through chain connecting members arranged on the left and right sides, the feeding bracket is composed of an upper bracket and a lower bracket connected together, a chain driven wheel is respectively installed at the front and rear ends of the upper bracket relative to the position of the two chains, the first rotating shaft and the second rotating shaft are respectively installed at the front and rear ends of the lower bracket, a chain driving wheel is respectively installed on the first rotating shaft relative to the position of the two chains, a chain transmission wheel is respectively installed on the second rotating shaft relative to the position of the two chains, and the servo motor is connected to the first rotating shaft.

3. The medium frequency hot bending machine for rectangular tube bending and twisting according to claim 1, characterized in that: A guide groove is respectively provided in the side walls on the left and right sides of the through slot, and a limit clamp (10) is movably connected in the guide groove. A threaded hole is respectively provided on the outer walls on the left and right sides of the fixed support at a position facing the guide groove. The threaded hole is connected to the guide slot and an adjusting screw (11) is connected therein. One end of the adjusting screw passes through the threaded hole and extends into the guide slot to be movably connected to the limit clamp. Under the action of the adjusting screw, the two limit clamps limit the rectangular tube passing through the through slot to the left and right.

4. The medium frequency hot bending machine for rectangular tube bending and twisting according to claim 1, characterized in that: The height adjustment mechanism includes a coil mounting shell (12), a rack (13), a gear (14) and a lifting servo motor. A third rotating shaft (15) is horizontally installed on the front side wall of the fixed support above the through slot. Two racks are connected to the bottom of the coil mounting shell. The lower ends of the racks are tightly attached to the front end surface of the fixed support and pass through the gap between the third rotating shaft and the fixed support. A gear is installed on the third rotating shaft at a position relative to the two racks. The two gears are respectively engaged with the two racks. The lifting servo motor is installed on the front end surface of the fixed support and is connected to the third rotating shaft. A rectifier coil (16) is installed in the coil mounting shell. The rectifier coil is electrically connected to the heating coil.

5. The medium frequency hot bending machine for rectangular tube bending and twisting according to claim 1, characterized in that: The adjustment support assembly is composed of a mounting seat (17), an adjustment support (18) and a pipe clamp (19). The mounting seat can be translated along the track and fixed by bolts. The adjustment support is rotatably connected to the mounting seat. The pipe clamp is arranged on one side of the adjustment support. One end of the pull rod passes through the pipe clamp and is fastened to it by a threaded assembly.

6. The medium frequency hot bending machine for rectangular tube bending and twisting according to claim 1, characterized in that: The movable support assembly includes a support seat (20), an end plate (21), a connecting frame (22), a mounting tube (23) and a connecting seat (24), and a universal wheel (25) is provided at each of the four corners of the bottom of the support seat. Two end plates are relatively provided on the top of the support seat, and the mounting tube is fixed between the two end plates. The other end of the pull rod is connected to the mounting tube through the connecting frame. The connecting seat is installed in the mounting tube and is restricted in the mounting tube by the two end plates on the front and rear sides. The second connecting groove is opened at one end of the connecting seat, and a second through groove for the rectangular tube to pass through is opened on one of the end plates.

7. The medium frequency hot bending machine for rectangular tube bending and twisting according to claim 6, characterized in that: A hydraulic press (26) is installed on the support seat, and the hydraulic press is movably connected to the support seat. The output shaft end of the hydraulic press is connected to the connecting seat through a transmission plate (27). A notch for the transmission plate to pass through is opened on the side wall of the installation cylinder, and one end of the transmission plate extends into the installation cylinder along the notch and is connected to the connecting seat.

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