Bronze tube bending apparatus

Abstract

The present application relates to a kind of bending equipment, especially a kind of bronze pipe bending equipment.The present application provides a kind of bronze pipe bending equipment, which can more stably clamp bronze pipe, prevent bronze pipe rotation deviation, and can also bend bronze pipe of different sizes.A kind of bronze pipe bending equipment, including base, support plate, mounting plate, drive motor and fixed seat etc.;The top of the base is fixedly connected with support plate, the upper side of the support plate is fixedly connected with mounting plate, the upper side of the bottom of the base is fixedly connected with drive motor, and the output shaft of the drive motor is fixedly connected with fixed seat.Push hollow guide rod and rotary bending wheel close to bronze pipe, make rotary bending wheel contact with bronze pipe, and drive rotary bending wheel to bend bronze pipe in positive rotation, by moving the position of sliding plate and rotary bending wheel, so that rotary bending wheel can bend bronze pipe of different sizes.

Description

TECHNICAL FIELD

[0001] The present application relates to a bending device, in particular to a bronze pipe bending device. BACKGROUND

[0002] Due to the widespread use of bronze pipes in production and life, the shape requirements of bronze pipes are different, among which many bronze pipes need to be bent. However, the current bending of bronze pipes generally uses a bending machine to bend the bronze pipe. The current bending machine is rarely able to bend bronze pipes of different sizes. When bending bronze pipes of different sizes, other types of bending machines need to be replaced for bending, which is relatively cumbersome to use. At the same time, the current bending machine is not stable enough when limiting the bronze pipe during bending, so that the bronze pipe is easy to rotate and cause angle deviation, so that the quality of the bent bronze pipe does not meet the requirements. SUMMARY

[0003] Therefore, the present application provides a bronze pipe bending device which can more stably clamp the bronze pipe, prevent the bronze pipe from rotating and deviating, and also bend bronze pipes of different sizes.

[0004] Technical scheme: A bronze pipe bending device comprises a base, a support plate, a mounting plate, a driving motor, a fixing seat, an adjusting mechanism and a rotation limiting mechanism. The base is provided with a support plate on the top, the support plate is provided with a mounting plate on the upper side, the base is provided with a driving motor on the upper side of the bottom, the output shaft of the driving motor is provided with a fixing seat, the adjusting mechanism is arranged on the support plate and the mounting plate, and the rotation limiting mechanism is arranged on the adjusting mechanism.

[0005] Furthermore, particularly preferably, the adjusting mechanism comprises a fixed hollow guide rod, a movable plate, a sliding plate, a rotating hollow guide rod, a rotating curved wheel, a fixed curved wheel, a screw rod, a limiting slot plate and a fixed nut, the fixed hollow guide rod is fixedly connected to the mounting plate, the bottom end of the fixed hollow guide rod is rotatably connected with the movable plate, a plurality of circular notches are formed in the movable plate, the sliding plate is slidably connected to the movable plate, the rotating hollow guide rod is rotatably connected to the sliding plate, the rotating curved wheel is slidably connected to the rotating hollow guide rod, the fixed curved wheel is slidably connected to the fixed hollow guide rod, three sliding holes are formed in the middle portions of the fixed hollow guide rod and the rotating hollow guide rod, the screw rods are threadedly connected to the two sides of the sliding plate, one end of the screw rod close to the movable plate is clamped into one of the circular notches of the movable plate, two screw rods are fixedly connected to the support plate and the mounting plate, the limiting slot plate is arranged between the two screw rods on the support plate, the limiting slot plate is also arranged between the two screw rods on the mounting plate, the two limiting slot plates are symmetrically arranged, the bronze pipe is clamped between the two limiting slot plates, and the fixed nut is threadedly connected to the upper end of the screw rod and in contact with the limiting slot plate.

[0006] Furthermore, particularly preferably, the rotating limiting mechanism comprises a rotating rod, a rotating handle, a fixed slot wheel and an extension limiting rod, the rotating rod is rotatably connected to the fixed hollow guide rod and the rotating hollow guide rod, the rotating handle is fixedly connected to the upper end of the rotating rod, the fixed slot wheel is fixedly connected to the bottom end of the rotating rod, the extension limiting rod is slidably connected to the sliding holes in the middle portions of the fixed hollow guide rod and the rotating hollow guide rod, and the fixed slot wheel is provided with a guide slot, and the extension limiting rod is slidably connected to the guide slot of the fixed slot wheel.

[0007] Furthermore, particularly preferably, the head end clamping mechanism is arranged on the movable plate, and the head end clamping mechanism comprises a fixed ring-shaped frame, a clamping rod, an arc-shaped clamping head and a tension spring, one side of the movable plate is fixedly connected with the fixed ring-shaped frame, two clamping rods are slidably connected to the fixed ring-shaped frame, the two clamping rods are symmetrically arranged, the arc-shaped clamping head is fixedly connected to the two clamping rods, the tension spring is connected between the fixed ring-shaped frame and the clamping rod, and the tension spring is sleeved on the clamping rod.

[0008] Furthermore, particularly preferably, a positioning and clamping mechanism is further included on the support plate, the positioning and clamping mechanism comprising telescopic rods, extrusion springs, T-shaped rods, fixed pins, movable slot rods, torsion springs and fixed curved push rods, four slide rods are slidably connected to the support plate, telescopic rods are slidably connected to the four slide rods, two extrusion springs are connected between the slide rods and the telescopic rods, a T-shaped rod is fixedly connected between every two support bottoms, a fixed pin is fixedly connected to the bottom of the support plate, a movable slot rod is rotatably connected to the fixed pin, the two ends of the movable slot rod are slidably connected to the T-shaped rods, a torsion spring is connected between the fixed pin and the movable slot rod, and a fixed curved push rod is fixedly connected to one of the T-shaped rods, with one end of the fixed curved push rod extending into the fixed seat.

[0009] Furthermore, particularly preferably, rubber friction plates are fixedly connected to the sides of the telescopic rods away from the slide rods.

[0010] Furthermore, particularly preferably, short fixed friction strips are fixedly connected to the two arc-shaped clamping heads.

[0011] The present application has the following advantages:

[0012] 1. When the bronze pipe needs to be bent, the worker aligns the matched limiting groove plate with the screw rod on the support and mounting plate according to the size of the bronze pipe, then fixes the limiting groove plate through the fixed nut and screw rod, and then puts the matched rotating bending wheel and fixed bending wheel into the fixed hollow guide rod and rotating hollow guide rod, and then moves the telescopic limiting rod outward to limit the fixed bending wheel and rotating bending wheel, so as to avoid the upward movement of the fixed bending wheel and rotating bending wheel during the bending of the bronze pipe, thereby affecting the bending effect, and to enable the fixed bending wheel and rotating bending wheel to stably bend the bronze pipe, and then the worker pushes the rotating hollow guide rod and rotating bending wheel close to the bronze pipe, so that the rotating bending wheel contacts the bronze pipe and drives the rotating bending wheel to rotate to bend the bronze pipe, and the position of the sliding plate and rotating bending wheel is moved to enable the rotating bending wheel to bend bronze pipes of different sizes.

[0013] 2. According to the bending length required by the bronze pipe, the worker pushes the bronze pipe to continue to contact the arc-shaped clamping head, and the bronze pipe pushes the two arc-shaped clamping heads and clamping rods outward to expand, so that the arc-shaped clamping head tightly contacts the bronze pipe, and the arc-shaped clamping head clamps the bronze pipe through the tension of the tension spring, so as to avoid the rotation of the bronze pipe during the bending work, thereby improving the bending quality of the rotating bending wheel on the bronze pipe.

[0014] 3、When the bronze pipe is put into the fixed slot wheel, the telescopic rod is closely attached to the bronze pipe, when the bronze pipe is started to be bent, the driving motor is started to drive the fixed seat to rotate, the fixed seat rotates to drive the T-shaped rod and the two slide rods on one side of the fixed curved push rod and the support plate to move along the sliding groove of the support plate, the four slide rods drive the compression springs and the telescopic rod to move towards each other, the telescopic rod further extrudes the bronze pipe, further avoids the rotation of the bronze pipe during bending to cause the angle to deviate, causes the quality of the bent product to be unqualified, thereby further improves the bending quality of the bronze pipe. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the first kind of stereoscopic structure schematic diagram of the application.

[0016] Figure 2 It is the second kind of stereoscopic structure schematic diagram of the application.

[0017] Figure 3 It is the partial stereoscopic structure schematic diagram of the application.

[0018] Figure 4 It is the stereoscopic structure schematic diagram of the adjusting mechanism and the rotation limiting mechanism of the application.

[0019] Figure 5 It is the partial stereoscopic structure schematic diagram of the adjusting mechanism of the application.

[0020] Figure 6 It is the sectional stereoscopic structure schematic diagram of the rotation limiting mechanism of the application.

[0021] Figure 7 It is the stereoscopic structure schematic diagram of the head end clamping mechanism and the positioning clamping mechanism of the application.

[0022] Figure 8 It is the stereoscopic structure schematic diagram of the head end clamping mechanism of the application.

[0023] Figure 9 It is the first kind of stereoscopic structure schematic diagram of the support plate and the positioning clamping mechanism of the application.

[0024] Figure 10 It is the second kind of stereoscopic structure schematic diagram of the support plate and the positioning clamping mechanism of the application.

[0025] Figure 11 It is the partial stereoscopic structure schematic diagram of the positioning clamping mechanism of the application.

[0026] Figure 12 It is the stereoscopic structure schematic diagram of the movable plate and the head end clamping mechanism of the application.

[0027] In the figure: 1, base, 2, support plate, 3, mounting plate, 4, drive motor, 5, fixed seat, 61, fixed hollow guide rod, 62, movable plate, 63, sliding plate, 64, rotating hollow guide rod, 65, rotating curved wheel, 651, fixed curved wheel, 66, spiral clamping rod, 67, screw, 68, limit groove plate, 69, fixed nut, 7, bronze pipe, 81, rotating rod, 82, rotating handle, 83, fixed groove wheel, 84, telescopic limit rod, 91, fixed ring frame, 92, clamping rod, 93, arc-shaped clamping head, 94, tension spring, 111, sliding rod, 112, telescopic rod, 113, extrusion spring, 114, T-shaped rod, 115, fixed bolt, 116, movable slot rod, 117, torsion spring, 118, fixed curved push rod, 12, rubber friction plate, 13, short fixed friction strip. DETAILED DESCRIPTION

[0028] The standard parts used in the application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings. The specific connection mode of each part adopts the conventional means such as bolt, rivet, welding and sticking in the prior art, which will not be described in detail here.

[0029] Example 1

[0030] A bronze pipe bending device, as shown in the figure, comprises a base 1, a support plate 2, a mounting plate 3, a drive motor 4, a fixed seat 5, an adjusting mechanism and a rotating limiting mechanism. Figures 1-6 The top of the base 1 is welded with the support plate 2, the upper side of the support plate 2 is welded with the mounting plate 3, the bottom of the base 1 is bolted with the drive motor 4 on the upper side, the output shaft of the drive motor 4 is fixed with the fixed seat 5, the adjusting mechanism is arranged on the support plate 2 and the mounting plate 3, the adjusting mechanism is used for adjusting according to different sizes of bronze pipes 7, the rotating limiting mechanism is arranged on the adjusting mechanism, and the rotating limiting mechanism is used for clamping the adjusting mechanism.

[0031] The adjusting mechanism comprises a fixed hollow guide rod 61, a movable plate 62, a sliding plate 63, a rotating hollow guide rod 64, a rotating curved wheel 65, a fixed curved wheel 651, a screw rod 66, a screw 67, a limiting slot plate 68 and a fixed nut 69, the fixed hollow guide rod 61 is welded on the mounting plate 3, the movable plate 62 is rotatably connected to the bottom end of the fixed hollow guide rod 61, a plurality of circular notches are formed in the movable plate 62, the sliding plate 63 is slidably connected to the movable plate 62, the rotating hollow guide rod 64 is rotatably connected to the sliding plate 63, the rotating curved wheel 65 is slidably connected to the rotating hollow guide rod 64, the rotating curved wheel 65 is used for bending the bronze pipe 7, the fixed curved wheel 651 is slidably connected to the fixed hollow guide rod 61, three sliding holes are formed in the middle portions of the fixed hollow guide rod 61 and the rotating hollow guide rod 64, the screw rods 66 are threadedly connected to the two sides of the sliding plate 63, one end of the screw rod 66 close to the movable plate 62 is clamped into one of the circular notches of the movable plate 62, the two screw rods 66 are symmetrically arranged, the screw rods 67 are welded on the support plate 2 and the mounting plate 3, the limiting slot plate 68 is arranged between the two screw rods 67 on the support plate 2, the limiting slot plate 68 is also arranged between the two screw rods 67 on the mounting plate 3, the two limiting slot plates 68 are symmetrically arranged, the bronze pipe 7 is clamped between the two limiting slot plates 68, the fixed nut 69 is threadedly connected to the upper end of the screw rod 67, the fixed nut 69 is in contact with the limiting slot plate 68, and the fixed nut 69 is used for fixing the limiting slot plate 68.

[0032] The rotating limiting mechanism comprises a rotating rod 81, a rotating handle 82, a fixed slot wheel 83 and an extension limiting rod 84, the rotating rod 81 is rotatably connected to the fixed hollow guide rod 61 and the rotating hollow guide rod 64, the rotating handle 82 is welded on the upper end of the rotating rod 81, the fixed slot wheel 83 is welded on the bottom end of the rotating rod 81, the extension limiting rod 84 is slidably connected to the sliding holes in the middle portions of the fixed hollow guide rod 61 and the rotating hollow guide rod 64, the fixed slot wheel 83 is provided with a guide slot, the extension limiting rod 84 is slidably connected with the guide slot of the fixed slot wheel 83, and the extension limiting rod 84 is uniformly provided with three.

[0033] When the bronze pipe 7 needs to be bent, the worker first puts the matched limiting groove plate 68 on the supporting plate 2 and the mounting plate 3 according to the size of the bronze pipe 7, then rotates the fixing nut 69 in the positive direction, fixes the limiting groove plate 68 through the thread cooperation between the fixing nut 69 and the screw rod 67, then puts the matched rotating bending wheel 65 and the fixed bending wheel 651 into the fixed hollow guide rod 61 and the rotating hollow guide rod 64, then rotates the rotating handle 82 in the positive direction, drives the rotating rod 81 and the fixed groove wheel 83 to rotate in the positive direction, drives the telescopic limiting rod 84 to move outward along the sliding hole in the middle of the fixed hollow guide rod 61 and the rotating hollow guide rod 64, limits the fixed bending wheel 651 and the rotating bending wheel 65, avoids the upward movement of the fixed bending wheel 651 and the rotating bending wheel 65 from affecting the bending effect when the bronze pipe 7 is bent, enables the fixed bending wheel 651 and the rotating bending wheel 65 to stably bend the bronze pipe 7, then the worker puts the bronze pipe 7 into the gap between the two limiting groove plates 68, then moves the bronze pipe 7 to the front between the fixed bending wheel 651 and the rotating bending wheel 65 according to the required bending length of the bronze pipe 7, then the worker pushes the rotating hollow guide rod 64 and the rotating bending wheel 65 close to the bronze pipe 7, makes the rotating bending wheel 65 contact with the bronze pipe 7, then rotates the screw clamp rod 66 in the positive direction, moves the screw clamp rod 66 in the direction close to the movable plate 62, clamps the screw clamp rod 66 into the circular notch of the movable plate 62, fixes and limits the sliding plate 63, the rotating hollow guide rod 64 and the rotating bending wheel 65 by the screw clamp rod 66, finally the worker starts the driving motor 4, drives the output shaft of the driving motor 4 to rotate in the positive direction, drives the fixed seat 5 to rotate in the positive direction, drives the movable plate 62, the sliding plate 63, the rotating hollow guide rod 64 and the rotating bending wheel 65 to rotate by a certain angle, drives the rotating bending wheel 65 to bend the bronze pipe 7, moves the position of the sliding plate 63 and the rotating bending wheel 65, enables the rotating bending wheel 65 to bend the bronze pipes 7 of different sizes, when the bronze pipe 7 is bent, the output shaft of the driving motor 4 reverses to drive the fixed seat 5 to reverse by a certain angle, drives the movable plate 62, the sliding plate 63, the rotating hollow guide rod 64 and the rotating bending wheel 65 to reverse, makes the rotating bending wheel 65 disengage from the bronze pipe 7, then the worker rotates the screw clamp rod 66 in the reverse direction, moves the screw clamp rod 66 away from the movable plate 62, makes the screw clamp rod 66 disengage from the circular notch of the movable plate 62, then moves the sliding plate 63, the rotating hollow guide rod 64 and the rotating bending wheel 65, moves the rotating bending wheel 65 away from the bronze pipe 7, then the worker pulls out the bronze pipe 7 and rotates the fixing nut 69 in the reverse direction, makes the limiting groove plate 68 no longer be fixed, finally the worker takes out the limiting groove plate 68.

[0034] Example 2

[0035] Based on Example 1, such as Figures 7-8 As shown, it also includes a head-end clamping mechanism, which is mounted on the movable plate 62. The head-end clamping mechanism includes a fixed ring frame 91, clamping rods 92, arc-shaped clamping heads 93, and tension springs 94. The fixed ring frame 91 is welded to one side of the movable plate 62. Two clamping rods 92 are slidably connected to the fixed ring frame 91. The two clamping rods 92 are symmetrically arranged. Arc-shaped clamping heads 93 are welded to both clamping rods 92. The arc-shaped clamping heads 93 are used to clamp the bronze tube 7. A tension spring 94 is connected between the fixed ring frame 91 and the clamping rods 92. The tension spring 94 is sleeved on the clamping rods 92.

[0036] Initially, the tension spring 94 is in its normal state. Based on the required bending length of the bronze tube 7, the worker pushes the bronze tube 7 forward. The bronze tube 7 contacts the rotating bending wheel 65 and the fixed bending wheel 651. Then, the bronze tube 7 continues forward, contacting the arc-shaped clamping head 93. The forward movement of the bronze tube 7 pushes the two arc-shaped clamping heads 93 and the clamping rod 92 outwards. The clamping rod 92 pulls the tension spring 94, causing the arc-shaped clamping heads 93 to fit tightly against the bronze tube 7. Next, the drive motor 4 is started. The output shaft of the drive motor 4 rotates clockwise, driving the movable plate 62 to rotate clockwise. The clockwise rotation of the movable plate 62 drives the rotating bending wheel 65, the fixed ring frame 91, the clamping rod 92, the arc-shaped clamping head 93, and the tension spring 94 to rotate clockwise. The rotating bending wheel 65 bends the bronze tube 7, and the bending is achieved through the tension spring 94. The tension of 4 causes the arc-shaped clamping head 93 to clamp the bronze tube 7, preventing the bronze tube 7 from rotating during bending and causing an angle shift, thereby improving the bending quality of the bronze tube 7 by the rotating bending wheel 65. After the bronze tube 7 is bent, the worker starts the drive motor 4 to reverse. The output shaft of the drive motor 4 reverses, causing the movable plate 62 and the fixed ring frame 91 to reverse. The fixed ring frame 91 causes the arc-shaped clamping head 93 and the clamping rod 92 to reverse together. The bronze tube 7 squeezes the arc-shaped clamping head 93 and the clamping rod 92 outward, and the tension spring 94 is stretched. When the movable plate 62 and the fixed hollow guide rod 61 reverse to a certain position, the bronze tube 7 no longer squeezes the arc-shaped clamping head 93, the tension spring 94 returns to its original position, the arc-shaped clamping head 93 and the clamping rod 92 return to their original position, and the arc-shaped clamping head 93 disengages from the bronze tube 7.

[0037] Example 3

[0038] Based on Example 1, such as Figures 9-10As shown, the positioning and clamping mechanism is arranged on the support plate 2, and comprises telescopic rods 112, extrusion springs 113, T-shaped rods 114, fixed pins 115, movable slot rods 116, torsion springs 117 and fixed curved push rods 118. Four slide rods 111 are slidably connected to the support plate 2, and the telescopic rods 112 are slidably connected to the four slide rods 111. The extrusion springs 113 are connected between the slide rods 111 and the telescopic rods 112. One T-shaped rod 114 is welded between every two support bottoms. The fixed pins 115 are welded to the bottom of the support plate 2. The movable slot rods 116 are rotatably connected to the fixed pins 115. The movable slot rods 116 are slidably connected to the T-shaped rods 114. The torsion springs 117 are connected between the fixed pins 115 and the movable slot rods 116. One fixed curved push rod 118 is welded to one of the T-shaped rods 114, and the other end of the fixed curved push rod 118 extends into the fixed seat 5.

[0039] Initially, when the bronze pipe 7 is not placed, the extrusion springs 113 are normal. When the bronze pipe 7 is placed between the two limiting groove plates 68, the worker bends one side of the telescopic rod 112 to move towards the slide rod 111, and the extrusion spring 113 is compressed. Then the bronze pipe 7 is pushed to move, the telescopic rod 112 is tightly attached to the bronze pipe 7, and after the bronze pipe 7 moves to a certain position, the worker bends the other side of the telescopic rod 112 to move towards the slide rod 111, and the extrusion spring 113 is compressed. When the bronze pipe 7 is bent, the driving motor 4 is started in forward rotation, the output shaft of the driving motor 4 drives the fixed seat 5 in forward rotation, the fixed seat 5 drives the fixed curved push rod 118 to move in forward rotation, the fixed curved push rod 118 drives the T-shaped rod 114 and the two slide rods 111 on one side of the support plate 2 to move along the sliding groove of the support plate 2, the T-shaped rod 114 drives the movable slot rod 116 to swing, the torsion spring 117 is twisted, the movable slot rod 116 drives the T-shaped rod 114 and the two slide rods 111 on the other side to move along the sliding groove of the support plate 2, the four slide rods 111 move towards each other to drive the extrusion spring 113 and the telescopic rod 112 to move towards each other, the extrusion spring 113 is compressed, and the telescopic rod 112 further extrudes the bronze pipe 7, thereby further avoiding the rotation of the bronze pipe 7 during bending to cause the angle to deviate, further improving the stability of the bent bronze pipe 7, and further improving the bending quality of the bronze pipe 7.

[0040] Example 4

[0041] Based on example 1, as shown in Figure 11 The rubber friction plates 12 are fixed to the sides of the telescopic rods 112 away from the slide rods 111.

[0042] When the telescopic rod 112 clamps the bronze tube 7 in the limiting groove plate 68, the rubber friction plate 12 on the telescopic rod 112 contacts the bronze tube 7. Since the rubber friction plate 12 is made of rubber, the friction between the rubber friction plate 12 and the bronze tube 7 increases, which can better prevent the bronze tube 7 from rotating and causing deviation, so that the rotating bending wheel 65 can stably bend the bronze tube 7.

[0043] Example 5

[0044] Based on Example 1, such as Figure 12 As shown, it also includes a short fixed friction strip 13. The two arc-shaped clamping heads 93 are each welded with a short fixed friction strip 13, and the two short fixed friction strips 13 are arranged symmetrically.

[0045] When the clamping rod 92 and the arc-shaped clamping head 93 come into contact with the bronze tube 7, the short fixed friction strip 13 on the arc-shaped clamping head 93 also comes into contact with the bronze tube 7. The short fixed friction strip 13 increases the contact area with the end of the bronze tube 7, which can enhance the friction with the end of the bronze tube 7, so that the rotating bending wheel 65 can bend the bronze tube 7 more stably.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A bronze tube bending apparatus characterized by, The utility model relates to a kind of bronze tube bending machine, including base (1), support plate (2), mounting plate (3), drive motor (4), fixed seat (5), adjusting mechanism and rotation limiting mechanism, the top of the base (1) is fixedly connected with support plate (2), the upper side of the support plate (2) is fixedly connected with mounting plate (3), the upper side of the bottom of the base (1) is fixedly connected with drive motor (4), the output shaft of the drive motor (4) is fixedly connected with fixed seat (5), the adjusting mechanism is located on support plate (2) and mounting plate (3), the rotation limiting mechanism is located on adjusting mechanism; The adjusting mechanism includes fixed hollow guide rod (61), movable plate (62), sliding plate (63), rotary hollow guide rod (64), rotary curved wheel (65), fixed curved wheel (651), screw rod (66), screw (67), limiting slot plate (68) and fixed nut (69), the mounting plate (3) is fixedly connected with fixed hollow guide rod (61), the bottom end of the fixed hollow guide rod (61) is rotatably connected with movable plate (62), a plurality of circular notches are formed in the movable plate (62), the movable plate (62) is slidably connected with sliding plate (63), the sliding plate (63) is rotatably connected with rotary hollow guide rod (64), the rotary hollow guide rod (64) is slidably connected with rotary curved wheel (65), the fixed hollow guide rod (61) is slidably connected with fixed curved wheel (651), the middle part of the fixed hollow guide rod (61) and rotary hollow guide rod (64) is formed with three sliding holes, the two sides of the sliding plate (63) are threadedly connected with screw rod (66), one end of the screw rod (66) close to the movable plate (62) is clamped into one of the circular notches of the movable plate (62), the two screw rods (67) on the support plate (2) are placed with limiting slot plate (68) between, the two screw rods (67) on the mounting plate (3) are also placed with limiting slot plate (68) between, the two limiting slot plates (68) are symmetrically arranged, the bronze tube (7) is clamped between the two limiting slot plates (68), the upper end of the screw rod (67) is threadedly connected with fixed nut (69), and the fixed nut (69) is in contact with the limiting slot plate (68); The rotation limiting mechanism includes rotating rod (81), rotating handle (82), fixed slot wheel (83) and telescopic limiting rod (84), the rotating rod (81) is rotatably connected with the fixed hollow guide rod (61) and the rotary hollow guide rod (64), the upper end of the rotating rod (81) is fixedly connected with rotating handle (82), the bottom end of the rotating rod (81) is fixedly connected with fixed slot wheel (83), the telescopic limiting rod (84) is slidably connected with the middle sliding hole of the fixed hollow guide rod (61) and the rotary hollow guide rod (64), the fixed slot wheel (83) is formed with guide slot, and the telescopic limiting rod (84) is slidably connected with the guide slot of the fixed slot wheel (83). Head end clamping mechanism is arranged on the movable plate (62), the head end clamping mechanism includes fixed ring frame (91), clamping rod (92), arc clamping head (93) and tension spring (94), one side of the movable plate (62) is fixedly connected with the fixed ring frame (91), two clamping rods (92) are slidably connected on the fixed ring frame (91), the two clamping rods (92) are symmetrically arranged, the arc clamping head (93) is fixedly connected on the two clamping rods (92), the tension spring (94) is connected between the fixed ring frame (91) and the clamping rod (92), the tension spring (94) is sleeved on the clamping rod (92); The positioning clamping mechanism is arranged on the support plate (2), the positioning clamping mechanism includes telescopic rod (112), extrusion spring (113), T-shaped rod (114), fixed bolt (115), movable slot rod (116), torsion spring (117) and fixed curved push rod (118), four slide rods (111) are slidably connected on the support plate (2), the telescopic rod (112) is slidably connected on the four slide rods (111), the extrusion spring (113) is connected between the slide rod (111) and the telescopic rod (112), the T-shaped rod (114) is fixedly connected between every two support bottoms, the fixed bolt (115) is fixedly connected on the bottom of the support plate (2), the movable slot rod (116) is rotatably connected on the fixed bolt (115), the movable slot rod (116) is slidably connected with the T-shaped rod (114) at both ends, the torsion spring (117) is connected between the fixed bolt (115) and the movable slot rod (116), the fixed curved push rod (118) is fixedly connected on one of the T-shaped rods (114), and the fixed curved push rod (118) extends into the fixed seat (5) away from the T-shaped rod (114).

2. A bronze tube bending apparatus according to claim 1, wherein The rubber friction plate (12) is fixedly connected on the side of the telescopic rod (112) away from the slide rod (111).

3. A bronze tube bending apparatus according to claim 1, wherein The short fixed friction strip (13) is fixedly connected on the arc clamping head (93). The short fixed friction strip (13) is fixedly connected on the arc clamping head (93).

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