U-shaped pipe bar bending machine

Abstract

The utility model relates to the technical field of pipe bending machines, in particular to a U-shaped pipe bar bending machine which comprises an operation table top, an electric control box body, a forming wheel, a driving assembly, a clamping assembly and a feeding unit, and the feeding unit comprises a guiding assembly used for guiding the periphery of a formed pipe bar and an adjusting assembly used for adjusting the guiding assembly. According to the U-shaped pipe bar bending machine, the clamping assembly can conveniently fix the end opening of a formed pipe bar, the driving assembly drives the forming wheel to rotate, and the formed pipe bar body is fed through the feeding unit, so that the pipe bending forming efficiency of the pipe bar body is effectively guaranteed, and the U-shaped pipe bar bending machine is suitable for popularization and application. And in addition, the feeding unit achieves the purpose of automatically feeding the pipe rods in the bending forming process through a compact mechanical structure, use of electrical equipment is avoided, and the beneficial effect of saving resources is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe benders, in particular to a U-shaped pipe and bar bender. Background Art

[0002] A pipe bender is a mechanical device used to bend pipes into specific shapes. It is widely used in many industries, such as automobile manufacturing, aerospace, shipbuilding, furniture manufacturing, architectural decoration and other fields. The pipe bender can process pipes of various materials, including but not limited to stainless steel, carbon steel, aluminum alloy, etc.;

[0003] An automatic pipe bender with the publication number of CN204159703U includes a frame and a hydraulic cylinder. The frame includes a left wallboard arranged front and back, a right wallboard arranged front and back and a top panel. The hydraulic cylinder is fixed on the top panel, and the piston rod of the hydraulic cylinder passes through the top panel and extends deep into the frame. An extrusion wheel is installed at the front end of the piston rod. A number of through holes are arranged at intervals in the vertical middle parts of the left wallboard and the right wallboard. A left guide roller and a right guide roller are respectively arranged between the corresponding through holes on the left wallboard and the right wallboard through bearings; An angle adjusting device including a fixed sleeve, a spring, a guide rod, a dial, a left sliding block and a right sliding block is also arranged directly below the extrusion wheel. The dial is arranged at the front end of the guide rod. One end of the left sliding block and the right sliding block is pin-connected and installed at the center of the dial on the guide rod. The bottom of the guide rod is fixedly connected with the spring, and the spring is arranged in the fixed sleeve. The beneficial effect of the utility model is that the bending angle of the processed pipe can be adjusted and the accuracy of the bending angle of the processed pipe is high;

[0004] Due to its own design characteristics, the pipe bender in the above technology achieves the purpose of extruding and bending materials through the extrusion action between the extrusion wheel, the left guide roller and the right guide roller. Such a design is not convenient for supporting the materials during bending, and is prone to over-extruding the materials, resulting in a high defective rate of products. Summary of the Utility Model

[0005] The utility model solves the problems in the related technologies, and provides a U-shaped pipe and bar bender. The clamping assembly is convenient for fixing the ports of the pipe and bar during forming. The driving assembly drives the forming wheel to rotate, and the feeding unit feeds the pipe and bar body during forming, effectively ensuring the efficiency of bending and forming the pipe and bar body. In addition, the feeding unit achieves the purpose of automatically feeding the pipe and bar during bending and forming through a compact mechanical structure, avoiding the use of electrical equipment and having the characteristics of saving resources.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions: a U-shaped tube and rod bending machine, including an operation table surface, an electric control box body arranged on the lower end surface of the operation table surface, a forming wheel arranged on the upper end surface of the operation table surface, a driving component for driving the forming wheel, a clamping component arranged on the forming wheel for clamping and fixing the port of the tube and rod, and a feeding unit arranged beside the forming wheel for feeding the tube and rod during forming;

[0007] The feeding unit includes a guiding component for guiding the outer circumference of the tube and rod during forming and an adjusting component for adjusting the guiding component.

[0008] By adopting the above technical solutions, the clamping component is convenient for fixing the port of the tube and rod during forming. The driving component drives the forming wheel to rotate, and the feeding unit feeds the tube and rod body during forming, effectively ensuring the efficiency of bending and forming the tube and rod body. In addition, the feeding unit achieves the purpose of automatically feeding the tube and rod during bending forming through a compact mechanical structure, avoiding the use of electrical equipment and having the characteristic of saving resources.

[0009] Optionally, the driving component includes a rotating shaft penetrating through the operation table surface and connected to the forming wheel, a bearing seat arranged at the connection between the rotating shaft and the operation table surface, a gear arranged at the other end of the rotating shaft, a transmission rack meshing with the gear, and a hydraulic cylinder connected to the transmission rack. Both ends of the rotating shaft are respectively connected to the gear and the forming wheel through key structures.

[0010] By adopting the above technical solutions, the stability of the connection between the rotating shaft and the forming wheel and the gear is effectively ensured.

[0011] Optionally, the hydraulic cylinder is fixedly arranged in the electric control box body, and the telescopic shaft of the hydraulic cylinder is connected to the transmission rack.

[0012] By adopting the above technical solutions, the telescopic shaft of the hydraulic cylinder is convenient for driving the transmission rack to move horizontally. The transmission rack is convenient for driving the gear to rotate, and when the gear rotates, it drives the forming wheel to rotate.

[0013] Optionally, the clamping component includes an adjusting seat arranged beside the forming wheel, an adjusting member for adjusting the adjusting seat, and a guiding component for guiding the adjusting seat during adjustment.

[0014] By adopting the above technical solutions, the adjusting member is convenient for adjusting the distance between the adjusting seat and the forming wheel, so as to be convenient for clamping and fixing tubes and rods with different outer diameters. The guiding component is convenient for guiding the adjusting seat during adjustment and for supporting the lower end surface of the adjusting seat.

[0015] Optionally, the adjusting member includes a first fixed support fixedly arranged on the upper end surface of the adjusting seat, a first adjusting support fixedly arranged on the forming wheel and oppositely arranged with the first fixed support, and a first adjusting screw arranged between the first fixed support and the first adjusting support. The first adjusting screw penetrates through the first fixed support and is connected to the first adjusting support, and the first adjusting screw is respectively connected to the first fixed support and the first adjusting support through threaded structures.

[0016] By adopting the above technical solution, the complementary functions of the first adjusting screw with the first fixed support and the first adjusting support facilitate the adjustment of the distance between the adjusting seat and the forming wheel, so as to facilitate clamping and fixing of tube rods with different outer diameters.

[0017] Optionally, the guiding assembly includes a second fixed support fixedly arranged on the lower end surface of the adjusting seat, a sliding support fixedly arranged on the forming wheel and oppositely arranged with the second fixed support, and a guiding rod arranged between the second fixed support and the sliding support. One end of the guiding rod is fixedly connected to the second fixed support, and the other end of the guiding rod is slidably connected to the sliding support.

[0018] By adopting the above technical solution, the sliding action between the guiding rod and the sliding support facilitates guiding the adjusting seat during adjustment and supporting the lower end surface of the adjusting seat.

[0019] Optionally, it further includes a limit baffle fixedly arranged at the other end of the guiding rod, and the outer diameter of the limit baffle is larger than that of the guiding rod.

[0020] By adopting the above technical solution, the limit baffle facilitates limiting the guiding rod, thus effectively preventing the guiding rod from detaching from the sliding support.

[0021] Optionally, the guiding assembly includes a pressing and sliding seat arranged on one side of the forming wheel, a mounting seat slidably connected with the pressing and sliding seat, a guiding roller rotatably connected with the mounting seat, a first slider fixedly arranged on the lower end surface of the pressing and sliding seat, and a second sliding groove arranged on the mounting seat and adapted to the first slider. The guiding rollers are at least two, and each guiding roller is rotatably connected to the mounting seat through a connecting rotating shaft.

[0022] By adopting the above technical solution, when the forming wheel rotates, the clamping assembly drives the port of the tube rod to rotate, and the pressing and sliding seat moves translationally due to the frictional force between the tube rod and the guiding rollers as the tube rod rotates, thus facilitating feeding of the tube rod during forming and effectively ensuring the efficiency of bending the tube rod.

[0023] Optionally, the first slider is arranged along the length direction of the pressing slider, and the second chute is arranged to be penetrating.

[0024] By adopting the above technical solution, the first slider and the second chute interact with each other, facilitating the guiding of the pressing slider during the translation process, thereby effectively ensuring the stability of feeding the material.

[0025] Optionally, the adjusting assembly includes a second adjusting screw rod rotatably arranged on the other side of the mounting seat and a second adjusting support seat fixedly arranged on the operating table surface. The second adjusting support seat is connected to the second adjusting screw rod through a threaded structure.

[0026] By adopting the above technical solution, the second adjusting support seat and the second adjusting screw rod interact with each other, facilitating the adjustment of the distance between the mounting seat and the forming wheel, and facilitating the unloading of the pipe rod body after bending.

[0027] Optionally, it further includes a second slider fixedly arranged on the lower end surface of the mounting seat and a first chute arranged on the operating table surface and adapted to the second slider. The second slider is arranged along the length direction of the mounting seat.

[0028] By adopting the above technical solution, the second slider and the first chute interact with each other, facilitating the guiding of the moving mounting seat, and effectively ensuring the stability of the mounting seat during movement.

[0029] Compared with the prior art, the beneficial effects of the present utility model are as follows: the present utility model;

[0030] 1. The clamping assembly is convenient for fixing the port of the pipe rod during forming. The driving assembly drives the forming wheel to rotate, and the feeding unit feeds the pipe rod body during forming, effectively ensuring the efficiency of bending and forming the pipe rod body;

[0031] 2. In addition, the feeding unit achieves the purpose of automatically feeding the pipe rod during bending and forming through a compact mechanical structure, avoiding the use of electrical equipment and having the characteristics of resource conservation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is the overall structural schematic diagram of the U-shaped pipe rod bending machine of the present utility model;

[0033] Figure 2 is the structural schematic diagram of the driving assembly for driving the forming wheel in the U-shaped pipe rod bending machine of the present utility model;

[0034] Figure 3 is the structural schematic diagram of the clamping assembly for clamping the pipe rod port in the U-shaped pipe rod bending machine of the present utility model;

[0035] Figure 4 It is a schematic structural diagram of a guiding component used for guiding the outer periphery of a pipe rod during forming in the U-shaped pipe rod bending machine of the present utility model;

[0036] In the figure:

[0037] 1. Operating table; 10. First guiding groove; 2. Electric control box body; 3. Forming wheel; 41. Rotating shaft; 42. Bearing seat; 42. Gear; 44. Driving rack; 45. Hydraulic cylinder; 5. Adjusting seat; 51. First fixed support; 52. Second fixed support; 61. First adjusting screw; 611. First adjusting support; 71. Guide rod; 711. Sliding support; 72. Limit baffle; 8. Tightening sliding seat; 81. First slider; 811. Second sliding groove; 91. Mounting seat; 911. Second slider; 92. Guide roller; 93. Second adjusting screw; 931. Second adjusting support. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restrictive of the present utility model and its application or use. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0040] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience in description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0042] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0043] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statement, the above words have no special meanings. Therefore, it should not be construed as limiting the protection scope of the present invention.

[0044] Such asFigures 1 to 4 As shown in the figure, a U-shaped tube and bar bending machine includes an operation table 1, an electric control box body 2 arranged on the lower end surface of the operation table 1, a forming wheel 3 arranged on the upper end surface of the operation table 1, and a driving assembly for driving the forming wheel 3. The driving assembly includes a rotating shaft 41 passing through the operation table 1 and connected to the forming wheel 3, a bearing seat 42 arranged at the connection between the rotating shaft 41 and the operation table 1, a gear 43 arranged at the other end of the rotating shaft 41, a transmission rack 44 meshing with the gear 43, and a hydraulic cylinder 45 connected to the transmission rack 44. Both ends of the rotating shaft 41 are respectively connected to the gear 43 and the forming wheel 3 through key structures, effectively ensuring the stability of the connection between the rotating shaft 41 and the forming wheel 3 and the gear 43. The hydraulic cylinder 45 is fixedly arranged in the electric control box body 2, and the telescopic shaft of the hydraulic cylinder 45 is connected to the transmission rack 44. The telescopic shaft of the hydraulic cylinder 45 is convenient for driving the transmission rack 44 to move horizontally, and the transmission rack 44 is convenient for driving the gear 43 to rotate. When the gear 43 rotates, it drives the forming wheel 3 to rotate.

[0045] In one embodiment, specifically refer to Figure 1 、 Figure 2 and Figure 3 , a clamping assembly arranged on the forming wheel 3 for clamping and fixing the port of the tube and bar. The clamping assembly includes an adjusting seat 5 arranged beside the forming wheel 3, an adjusting member for adjusting the adjusting seat 5, and a guiding assembly for guiding the adjusting seat 5 during the adjusting process. The adjusting member is convenient for adjusting the distance between the adjusting seat 5 and the forming wheel 3, so as to facilitate clamping and fixing tubes and bars with different outer diameters. The guiding assembly is convenient for guiding the adjusting seat 5 during adjustment and for supporting the lower end surface of the adjusting seat 5.

[0046] In one embodiment, specifically refer to Figure 2 and Figure 3 , the adjusting member includes a first fixed support 51 fixedly arranged on the upper end surface of the adjusting seat 5, a first adjusting support 611 fixedly arranged on the forming wheel 3 and opposite to the first fixed support 51, and a first adjusting screw 61 arranged between the first fixed support 51 and the first adjusting support 611. The first adjusting screw 61 passes through the first fixed support 51 and is connected to the first adjusting support 611, and the first adjusting screw 61 is respectively connected to the first fixed support 51 and the first adjusting support 611 through thread structures. The complementary effect between the first adjusting screw 61 and the first fixed support 51 and the first adjusting support 611 is convenient for adjusting the distance between the adjusting seat 5 and the forming wheel 3, so as to facilitate clamping and fixing tubes and bars with different outer diameters.

[0047] In one embodiment, specifically refer to Figure 2 and Figure 3, the guiding assembly includes a second fixed support 52 fixedly arranged on the lower end face of the adjusting base 5, a sliding support 711 fixedly arranged on the forming wheel 3 and oppositely arranged with the second fixed support 52, and a guiding rod 71 arranged between the second fixed support 52 and the sliding support 711. One end of the guiding rod 71 is fixedly connected to the second fixed support 52, and the other end of the guiding rod 71 is slidably connected to the sliding support 711. The mutual sliding action between the guiding rod 71 and the sliding support 711 facilitates guiding the adjusting base 5 during adjustment and also facilitates supporting the lower end face of the adjusting base 5.

[0048] In one embodiment, specifically refer to Figure 1 and Figure 4 , a feeding unit arranged beside the forming wheel 3 for feeding the tube or rod during forming. The feeding unit includes a guiding assembly for guiding the outer periphery of the tube or rod during forming and an adjusting assembly for adjusting the guiding assembly. The guiding assembly includes a pressing and sliding seat 8 arranged on one side of the forming wheel 3, a mounting seat 91 slidably connected to the pressing and sliding seat 8, a guiding roller 92 rotatably connected to the mounting seat 91, a first slider 81 fixedly arranged on the lower end face of the pressing and sliding seat 8, and a second sliding groove 811 arranged on the mounting seat 91 and adapted to the first slider 81. At least two guiding rollers 92 are provided, and each guiding roller 92 is rotatably connected to the mounting seat 91 through a connecting rotating shaft. When the forming wheel 3 rotates, the clamping assembly drives the port of the tube or rod to rotate, and the pressing and sliding seat 8 moves translationally due to the frictional force between the tube or rod and the guiding roller 92, thereby facilitating feeding the tube or rod during forming and effectively ensuring the efficiency of bending the tube or rod.

[0049] In one embodiment, specifically refer to Figure 4 , the first slider 81 is arranged along the length direction of the pressing and sliding seat 8, the second sliding groove 811 is arranged to be penetrating, and the mutual complementary action between the first slider 81 and the second sliding groove 811 facilitates guiding the pressing and sliding seat 8 during translation, thereby effectively ensuring the stability of feeding the material.

[0050] In one embodiment, specifically refer to Figure 4 , the adjusting assembly includes a second adjusting screw 93 rotatably arranged on the other side of the mounting seat 91 and a second adjusting support 931 fixedly arranged on the operation table 1. The second adjusting support 931 is connected to the second adjusting screw 93 through a threaded structure, and the mutual complementary action between the second adjusting support 931 and the second adjusting screw 93 facilitates adjusting the distance between the mounting seat 91 and the forming wheel 3, and facilitates discharging the tube or rod body after bending.

[0051] In one embodiment, specifically refer to Figure 1 and Figure 3, in order to prevent the guide rod 71 from disengaging from the sliding support 711, a limit baffle 72 fixedly arranged at the other end of the guide rod 71 is further included. The outer diameter of the limit baffle 72 is larger than that of the guide rod 71. The limit baffle 72 facilitates the limitation of the guide rod 71, thus effectively preventing the guide rod 71 from disengaging from the sliding support 711.

[0052] In one embodiment, specifically refer to Figure 1 and Figure 4 , in order to facilitate the guiding of the mounting seat 91 during the adjustment process, a second slider 911 fixedly arranged on the lower end surface of the mounting seat 91 and a first chute arranged on the operation table 1 and adapted to the second slider 911 are further included. The second slider 911 is arranged along the length direction of the mounting seat 91. The complementary effect between the second slider 911 and the first chute facilitates the guiding of the moving mounting seat 91 and effectively ensures the stability of the mounting seat 91 during movement.

[0053] In this embodiment, during use, one end of the forming port of the tube rod body is fixed in the clamping assembly. The second adjusting support 931 and the second adjusting screw rod 93 have a complementary effect, which facilitates the adjustment of the distance between the mounting seat 91 and the forming wheel 3. Then, the hydraulic cylinder 45 is started. The telescopic shaft of the hydraulic cylinder 45 facilitates driving the transmission rack 44 to move horizontally. The transmission rack 44 facilitates driving the gear 43 to rotate. When the gear 43 rotates, it drives the forming wheel 3 to rotate. The clamping assembly drives the port of the tube rod to rotate. The pressing slide seat 8 moves translationally due to the frictional force between the tube rod and the guide roller 92 as the tube rod rotates, thus facilitating the feeding of the tube rod during forming and facilitating the slow side bending forming of the tube rod body.

[0054] The above is the preferred embodiment of the present invention. Those skilled in the art of the present invention can still make changes and modifications to the above embodiment. Therefore, the present invention is not limited to the above specific embodiment. Any obvious improvement, replacement or variation made by those skilled in the art on the basis of the present invention belongs to the protection scope of the present invention.

Claims

1. A U-shaped tube and rod bending machine, characterized in that: The invention comprises an operating table (1), an electric control box (2) arranged on the lower end surface of the operating table (1), a forming wheel (3) arranged on the upper end surface of the operating table (1), a driving component for driving the forming wheel (3), a clamping component arranged on the forming wheel (3) for clamping and fixing the end of a pipe rod, and a feeding unit arranged beside the forming wheel (3) for feeding the pipe rod being formed; The feeding unit comprises a guide assembly for guiding the outer periphery of the tube rod being formed and an adjustment assembly for adjusting the guide assembly.

2. A U-shaped tube and rod bending machine according to claim 1, characterized in that: The driving assembly comprises a rotating shaft (41) passing through the operating table (1) and connected to the forming wheel (3), a bearing seat (42) arranged at the connection between the rotating shaft (41) and the operating table (1), a gear (43) arranged at the other end of the rotating shaft (41), a transmission rack (44) meshing with the gear (43), and a hydraulic cylinder (45) connected to the transmission rack (44), the two ends of the rotating shaft (41) are respectively connected to the gear (43) and the forming wheel (3) through a key structure, the hydraulic cylinder (45) is fixedly arranged in the electric control box (2), and the telescopic shaft of the hydraulic cylinder (45) is connected to the transmission rack (44).

3. A U-shaped tube and rod bending machine according to claim 2, characterized in that: The clamping assembly comprises an adjustment seat (5) arranged beside the molding wheel (3), an adjustment component for adjusting the adjustment seat (5), and a guide assembly for guiding the adjustment seat (5) during the adjustment process.

4. A U-shaped tube and rod bending machine according to claim 3, characterized in that: The adjusting member comprises a first fixed support (51) fixedly arranged on the upper end surface of the adjusting seat (5), a first adjusting support (611) fixedly arranged on the forming wheel (3) and arranged opposite to the first fixed support (51), and a first adjusting screw (61) arranged between the first fixed support (51) and the first adjusting support (611), wherein the first adjusting screw (61) passes through the first fixed support (51) and is connected to the first adjusting support (611), and the first adjusting screw (61) is respectively connected to the first fixed support (51) and the first adjusting support (611) through a threaded structure.

5. A U-shaped tube and rod bending machine according to claim 4, characterized in that: The guide assembly comprises a second fixed support (52) fixedly arranged on the lower end surface of the adjustment seat (5), a sliding support (711) fixedly arranged on the forming wheel (3) and arranged opposite to the second fixed support (52), and a guide rod (71) arranged between the second fixed support (52) and the sliding support (711), one end of the guide rod (71) being fixedly connected to the second fixed support (52), and the other end of the guide rod (71) being slidably connected to the sliding support (711).

6. A U-shaped tube and rod bending machine according to claim 5, characterized in that: The guide assembly comprises a clamping slide (8) arranged on one side of the forming wheel (3), a mounting seat (91) slidably connected to the clamping slide (8), a guide roller (92) rotatably connected to the mounting seat (91), a first slider (81) fixedly arranged on the lower end surface of the clamping slide (8), and a second slide groove (811) arranged on the mounting seat (91) and adapted to the first slider (81), wherein at least two guide rollers (92) are provided, and each guide roller (92) is rotatably connected to the mounting seat (91) via a connecting shaft.

7. A U-shaped tube and rod bending machine according to claim 6, characterized in that: The first sliding block (81) is arranged in the length direction of the tightening sliding seat (8), and the second sliding groove (811) is arranged to be penetrating, and the first sliding block (81) and the second sliding groove (811) complement each other.

8. The U-shaped tube and rod bending machine according to claim 7, characterized in that: The adjustment assembly comprises a second adjustment screw (93) rotatably arranged on the other side of the mounting seat (91) and a second adjustment support (931) fixedly arranged on the operating table (1); the second adjustment support (931) and the second adjustment screw (93) are connected via a threaded structure; the second adjustment support (931) and the second adjustment screw (93) complement each other.

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