Bending device for metal product production

Abstract

The invention relates to the field of metal product production, in particular to a bending device for metal product production. According to the bending device for metal product production, the bending angle of the metal steel pipe can be conveniently adjusted, so that the bending efficiency of the metal steel pipe is improved, and the metal steel pipe can be stably bent. A bending device for metal product production comprises a supporting frame, a rotating motor and the like. The top of the supporting frame is fixedly connected with a rotating motor. A worker pulls a handle in the direction away from the metal steel pipe according to the angle needing to be bent, a baffle is moved to a proper position, the worker starts a rotating motor after adjustment is finished, when the metal steel pipe makes contact with the baffle, the baffle can abut against the metal steel pipe, a first bending block and a second bending block continue to rotate, and the metal steel pipe can be bent by a certain angle; and by adjusting the position of the baffle, the bending angle of the metal steel pipe can be directly adjusted, and then the bending efficiency of the metal steel pipe can be improved.

Description

Technical Field

[0001] This invention relates to the field of metal product manufacturing, and more particularly to a bending device for metal product manufacturing. Background Technology

[0002] Bending metal products is one of the basic processes in the production of metal products and a fundamental operation in the production of metal products. Bending metal products means bending and deforming metal products. In order to be suitable for different uses and scenarios, it is necessary to bend metal products at different angles according to the uses and scenarios. Many companies use metal production bending equipment for bending processing.

[0003] Most metal bending equipment currently in use has a fixed bending angle. When it is necessary to bend metal products at different angles, the operator needs to change parts to perform the bending, which results in low production efficiency. Furthermore, during the bending process, the metal products may wobble due to external forces, making it difficult to bend the metal products stably and resulting in inaccurate bending angles. Summary of the Invention

[0004] In view of this, the present invention provides a bending device for metal product manufacturing that facilitates the adjustment of the bending angle of the metal pipe, thereby improving the bending efficiency of the metal pipe and enabling stable bending of the metal pipe.

[0005] Technical solution: A bending device for metal product manufacturing includes a support frame, a rotary motor, a hexagonal tube, a hexagonal rod, a rotary support shaft, a rotating mechanism, and an adjustable switch mechanism. The rotary motor is fixedly connected to the top of the support frame. A hexagonal tube is fixedly connected to the output shaft of the rotary motor. A hexagonal rod is fixedly connected to the hexagonal tube. The rotary support shaft is fixedly connected to the hexagonal rod. The rotary support shaft is rotatably connected to the support frame. The rotating mechanism is mounted on the support frame and connected to the rotary support shaft. A metal steel pipe is placed on the rotating mechanism. The adjustable switch mechanism is mounted on the support frame and connected to the rotating mechanism.

[0006] Furthermore, it is particularly preferred that the rotating mechanism includes a missing gear, a support rod, a rotating shaft, a rotating gear, a bending table, a bending block one, and a bending block two. The missing gear is fixedly connected to the rotating support shaft, a support rod is fixedly connected to the top of the support frame, a rotating shaft is rotatably connected to the top of the support rod, a rotating gear is fixedly connected to the rotating shaft, the rotating gear meshes with the missing gear, a bending table is fixedly connected to the rotating shaft, a bending block one and a bending block two are fixedly connected to the top of the bending table, and a metal steel pipe is placed between the bending block one and the bending block two.

[0007] Furthermore, particularly preferably, the adjustable switch mechanism includes a movable plate, a handle, a baffle, a rack, a fixed connecting rod, a pinion, and a locking rod. The movable plate is slidably connected to the support frame, and the handle is fixedly connected to the movable plate, passing through the support frame. The baffle is fixedly connected to the top of the movable plate, and the baffle contacts a metal steel pipe. The rack is fixedly connected to the movable plate, and the fixed connecting rod is fixedly connected to the support frame. The pinion is rotatably connected to the lower part of the fixed connecting rod, and the pinion meshes with the rack. The locking rod is slidably connected to the support frame, and the locking rod is engaged between two teeth of the pinion.

[0008] Furthermore, it is particularly preferred that a reciprocating mechanism is included, which is mounted on the rotary motor and connected to the rotary support shaft. The reciprocating mechanism includes a fixed support rod, a nut, a reciprocating screw, a support plate, a fixed disc, a rotating pressure plate, and a torsion spring. Two fixed support rods are fixedly connected to the top of the rotary motor, and a nut is fixedly connected between the two fixed support rods. A reciprocating screw is fixedly connected to the rotary support shaft, and the reciprocating screw is threadedly connected to the nut. A support plate is fixedly connected to the support frame, and a fixed disc is fixedly connected to the support plate. The fixed disc is rotatably connected to the rotary support shaft. A rotating pressure plate is rotatably connected to the rotary support shaft, and a torsion spring is connected between the rotating pressure plate and the fixed disc.

[0009] Furthermore, it is particularly preferred that the device also includes an extrusion mechanism, which is mounted on a bending table and connected to a support frame and a support guide plate. The extrusion mechanism includes a support block, a support guide plate, an extrusion plate, a support tube, and a ring spring. A support block is fixedly connected to the top of the bending table, a support guide plate is fixedly connected to the support frame, an extrusion plate is slidably connected to the support guide plate, a support tube is fixedly connected to the extrusion plate, the support block is slidably connected to the support tube, a ring spring is connected between the support block and the extrusion plate, and the metal pipe is located between the baffle and the extrusion plate.

[0010] Furthermore, it is particularly preferred that the device also includes an angle adjustment mechanism, which is disposed on the bending table. The angle adjustment mechanism includes a fixed ring, a sliding ring, a guide rod, a return spring, and a pressing rod. The fixed ring is fixedly connected to the top of the bending table, and the guide rod is fixedly connected to the fixed ring. The sliding ring is slidably connected to the upper part of the guide rod. A return spring is connected between the fixed ring and the sliding ring. The pressing rod is fixedly connected to the top of the sliding ring and is located above the metal pipe.

[0011] Furthermore, it is particularly preferred that the support frame also includes a positioning plate, which is fixedly connected to the top of the support frame and contacts one end of the metal steel pipe.

[0012] Furthermore, it is particularly preferred that both the first bending block and the second bending block are cylindrical structures, with the diameter of the first bending block being larger than the diameter of the second bending block.

[0013] Furthermore, it is particularly preferred that the handle has a small grip to facilitate the worker's pushing of the handle.

[0014] Furthermore, it is particularly preferred that the extrusion rod consists of a small round rod and an arc-shaped plate fixedly connected to the top of the small round rod.

[0015] 1. The operator pulls the handle away from the metal pipe according to the required bending angle, so that the baffle moves to the appropriate position. After adjustment, the operator starts the rotary motor. The rotary motor rotates the metal pipe, bending block one, and bending block two by 90 degrees through the output shaft. When the metal pipe contacts the baffle, the baffle will press against the metal pipe. The continued rotation of bending block one and bending block two will bend the metal pipe at a certain angle. By adjusting the position of the baffle, the bending angle of the metal pipe can be directly adjusted, thereby improving the bending efficiency of the metal pipe.

[0016] Second, the rotation of the rotary support shaft will drive the reciprocating screw to rotate. The reciprocating screw will move downward through the screw thread, thereby causing the rotary pressure plate to move downward and contact the metal steel pipe. The rotary pressure plate will press down on the metal steel pipe, which can prevent the metal steel pipe from shaking during the bending process, thus enabling stable bending of the metal steel pipe and making the bending angle of the metal steel pipe more accurate.

[0017] Third, the rotation of the bending table will cause the support block to rotate. The rotation of the support block will compress the ring spring. When the ring spring is compressed to a certain extent, the ring spring will push the extrusion plate to move closer to the baffle, thereby fixing the metal steel pipe and further preventing the metal steel pipe from shaking during the bending process, thus enabling more stable bending of the metal steel pipe.

[0018] Fourth, the positioning plate can hold the metal pipe in place, so that the bending point of each metal pipe to be bent is in the same position, which can further make the bending angle of the metal pipe more accurate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the third three-dimensional structure of the present invention.

[0022] Figure 4 This is a partial three-dimensional structural diagram of the rotating mechanism of the present invention.

[0023] Figure 5 This is a schematic diagram of the first partial three-dimensional structure of the adjustable switch mechanism of the present invention.

[0024] Figure 6 This is a schematic diagram of a second three-dimensional structure of the adjustable switching mechanism of the present invention.

[0025] Figure 7 This is a partial cross-sectional three-dimensional structural schematic diagram of the adjustable switch mechanism of the present invention.

[0026] Figure 8 This is a partial three-dimensional structural diagram of the reciprocating mechanism of the present invention.

[0027] Figure 9 This is a three-dimensional structural diagram of the reciprocating mechanism of the present invention.

[0028] Figure 10 This is a three-dimensional structural diagram showing the disassembled hexagonal tube, hexagonal rod, and rotating support shaft of the present invention.

[0029] Figure 11 This is a schematic diagram of the first three-dimensional structure of the extrusion mechanism of the present invention.

[0030] Figure 12 This is a schematic diagram of a second three-dimensional structure of the extrusion mechanism of the present invention.

[0031] Figure 13 This is a schematic diagram of the third three-dimensional structure of the extrusion mechanism of the present invention.

[0032] Figure 14 This is a partial three-dimensional structural schematic diagram of the extrusion mechanism of the present invention.

[0033] Figure 15 This is a partial three-dimensional structural schematic diagram of the present invention.

[0034] Figure 16 This is a three-dimensional structural diagram of the angle adjustment mechanism of the present invention.

[0035] In the diagram: 1. Support frame; 2. Metal pipe; 4. Rotary motor; 5. Hexagonal tube; 51. Hexagonal rod; 6. Rotating support shaft; 71. Gear missing; 72. Support rod; 73. Rotating shaft; 74. Rotating gear; 75. Bending table; 751. Bending block one; 752. Bending block two; 81. Moving plate; 82. Handle; 83. Baffle; 84. Rack; 85. Fixed connecting rod; 86. Pinion; 87. Locking rod. 91. Fixed support rod; 92. Nut; 93. Reciprocating screw; 94. Support plate; 95. Fixed disc; 96. Rotating pressure plate; 97. Torsion spring; 101. Support block; 102. Support guide plate; 103. Extrusion plate; 104. Support tube; 105. Ring spring; 11. Fixed ring; 111. Sliding ring; 112. Guide rod; 113. Return spring; 114. Extrusion rod; 12. Positioning plate. Detailed Implementation

[0036] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, welding, and bonding that are mature in the prior art, and will not be described in detail here.

[0037] Example 1: A bending device for producing metal products, such as Figures 1-13 As shown, the system includes a support frame 1, a rotary motor 4, a hexagonal tube 5, a hexagonal rod 51, a rotary support shaft 6, a rotating mechanism, and an adjustable switch mechanism. The rotary motor 4 is bolted to the top of the support frame 1. The hexagonal tube 5 is bolted to the output shaft of the rotary motor 4. The hexagonal rod 51 is bolted to the hexagonal tube 5. The rotary support shaft 6 is bolted to the hexagonal rod 51. The rotary support shaft 6 is rotatably connected to the support frame 1. The rotating mechanism is mounted on the support frame 1 and connected to the rotary support shaft 6. A metal steel pipe 2 is placed on the rotating mechanism. The adjustable switch mechanism is mounted on the support frame 1 and connected to the rotating mechanism.

[0038] The rotating mechanism includes a missing gear 71, a support rod 72, a rotating shaft 73, a rotating gear 74, a bending table 75, a first bending block 751, and a second bending block 752. The missing gear 71 is fixedly connected to the rotating support shaft 6. The support rod 72 is riveted to the top of the support frame 1. The rotating shaft 73 is rotatably connected to the top of the support rod 72. The rotating gear 74 is connected to the rotating shaft 73 via a flat key. The rotating gear 74 meshes with the missing gear 71. The bending table 75 is bolted to the rotating shaft 73. The first bending block 751 and the second bending block 752 are bolted to the top of the bending table 75. A metal steel pipe 2 is placed between the first bending block 751 and the second bending block 752.

[0039] The adjustable switch mechanism includes a movable plate 81, a handle 82, a baffle 83, a rack 84, a fixed connecting rod 85, a pinion 86, and a locking rod 87. The movable plate 81 is slidably connected to the support frame 1. The handle 82 is bolted to the movable plate 81 and passes through the support frame 1. The baffle 83 is bolted to the top of the movable plate 81 and contacts the metal steel pipe 2. The rack 84 is bolted to the movable plate 81. The fixed connecting rod 85 is bolted to the support frame 1. The pinion 86 is rotatably connected to the lower part of the fixed connecting rod 85 and meshes with the rack 84. The locking rod 87 is slidably connected to the support frame 1 and is locked between two teeth of the pinion 86.

[0040] Initially, the locking lever 87 is engaged between two teeth of the pinion 86. During bending, the operator pulls the locking lever 87 upwards, causing it to disengage from the pinion 86. Then, the operator pulls the handle 82 away from the metal pipe 2 according to the desired bending angle. This movement of the handle 82 moves the moving plate 81, which in turn moves the baffle 83 and rack 84. The baffle 83 is moved to the appropriate position, and the rack 84 rotates the pinion 86. When the handle 82 is adjusted to a certain position, the operator pushes the locking lever 87 downwards, causing it to re-engage with one of the teeth of the pinion 86. The operator then starts the rotary motor 4. The rotary motor 4, through its output shaft, rotates the hexagonal tube 5. The rotation of the hexagonal tube 5 rotates the hexagonal rod 51, which in turn rotates the rotating support shaft 6. The rotating support shaft 6 then rotates the missing gear 71. When gear 71 rotates to mesh with rotating gear 74, the rotation of gear 71 will cause rotating gear 74 to rotate 90 degrees. The rotation of rotating gear 74 will cause rotating shaft 73 to rotate 90 degrees. The rotation of rotating shaft 73 will cause bending table 75 to rotate 90 degrees. The rotation of bending table 75 will cause metal steel pipe 2, bending block 1 751 and bending block 2 752 to rotate 90 degrees. When metal steel pipe 2 contacts baffle 83, baffle 83 will abut against metal steel pipe 2. Bending block 1 751 and bending block 2 752 will continue to rotate and bend metal steel pipe 2 at a certain angle. By adjusting the position of baffle 83, the bending angle of metal steel pipe 2 can be directly adjusted, thereby improving the bending efficiency of metal steel pipe 2. After bending is completed, the continued rotation of gear 71 will separate from rotating gear 74. Then the worker will remove the bent metal steel pipe 2 and adjust the rotating motor 4 to rotate in the opposite direction. Gear 71 will rotate in the opposite direction and drive rotating gear 74 and bending table 75 to rotate in the opposite direction and reset.

[0041] Example 2: Based on Example 1, such as Figure 1 , Figure 2 , Figure 8 , Figure 9 and Figure 15 As shown, it also includes a reciprocating mechanism, which is mounted on the rotary motor 4 and connected to the rotary support shaft 6. The reciprocating mechanism includes a fixed support rod 91, a nut 92, a reciprocating screw 93, a support plate 94, a fixed disc 95, a rotating pressure plate 96, and a torsion spring 97. The top of the rotary motor 4 is bolted to two fixed support rods 91, and a nut 92 is bolted between the two fixed support rods 91. The reciprocating screw 93 is fixedly connected to the rotary support shaft 6, and the reciprocating screw 93 is threaded to the nut 92. The support frame 1 is bolted to the support plate 94, and a fixed disc 95 is bolted to the support plate 94. The fixed disc 95 is rotatably connected to the rotary support shaft 6. The rotary support shaft 6 is rotatably connected to the rotating pressure plate 96, and a torsion spring 97 is hooked between the rotating pressure plate 96 and the fixed disc 95.

[0042] The rotation of the rotary support shaft 6 drives the reciprocating screw 93 to rotate. The reciprocating screw 93 moves downward, which in turn drives the rotary support shaft 6 downward. The downward movement of the rotary support shaft 6 drives the fixed disc 95, the rotating pressure plate 96, and the torsion spring 97 downward. When the rotating pressure plate 96 moves downward and contacts the metal pipe 2, it presses down on the metal pipe 2, preventing it from wobbling during bending. This ensures stable bending of the metal pipe 2 and makes the bending angle more accurate. When the reciprocating screw 93 continues to rotate, it moves upward, which drives the rotary support shaft 6 to move upward and reset. The upward reset of the rotary support shaft 6 then resets the fixed disc 95, the rotating pressure plate 96, and the torsion spring 97, and the rotating pressure plate 96 no longer presses down on the metal pipe 2.

[0043] Example 3: Based on Example 2, such as Figures 11-14 As shown, it also includes an extrusion mechanism, which is mounted on the bending table 75 and connected to the support frame 1 and the support guide plate 102. The extrusion mechanism includes a support block 101, a support guide plate 102, an extrusion plate 103, a support tube 104, and a ring spring 105. The top of the bending table 75 is bolted to the support block 101. The support guide plate 102 is bolted to the support frame 1. The extrusion plate 103 is slidably connected to the support guide plate 102. The support tube 104 is bolted to the extrusion plate 103. The support block 101 and the support tube 104 are slidably connected. The ring spring 105 is connected between the support block 101 and the extrusion plate 103 via a hook. The metal steel pipe 2 is located between the baffle 83 and the extrusion plate 103.

[0044] The rotation of the bending table 75 causes the support block 101 to rotate, which in turn compresses the annular spring 105. When the annular spring 105 is compressed to a certain extent, it pushes the extrusion plate 103 towards the baffle 83, thereby fixing the metal pipe 2 and preventing it from wobbling during bending. This allows for more stable bending of the metal pipe 2. When the bending table 75 rotates in the opposite direction to reset, it causes the support block 101 to rotate in the opposite direction to reset. This reset of the support block 101 resets the annular spring 105, which then stops pushing the extrusion plate 103, thus causing the extrusion plate 103 to reset as well.

[0045] Example 4: Based on Example 3, such as Figures 13-16 As shown, it also includes an angle adjustment mechanism, which is mounted on the bending table 75. The angle adjustment mechanism includes a fixed ring 11, a sliding ring 111, a guide rod 112, a return spring 113, and a pressing rod 114. The top of the bending table 75 is bolted to the fixed ring 11, and the guide rod 112 is bolted to the fixed ring 11. The sliding ring 111 is slidably connected to the upper part of the guide rod 112. The return spring 113 is connected between the fixed ring 11 and the sliding ring 111 by a hook. The top of the sliding ring 111 is bolted to the pressing rod 114, which consists of a small round rod and an arc-shaped plate fixedly connected to the top of the small round rod. The pressing rod 114 is located above the metal steel pipe 2.

[0046] When the rotating pressure plate 96 moves downward, it will contact the extrusion rod 114. The downward movement of the rotating pressure plate 96 will cause the extrusion rod 114 to move downward, thus compressing the return spring 113. The rotation of the bending table 75 will cause the fixed ring 11, guide rod 112, sliding ring 111, return spring 113 and extrusion rod 114 to rotate. When the extrusion rod 114 rotates to the point where it no longer contacts the rotating pressure plate 96, the return spring 113 will return to its original position. The reverse rotation of the bending table 75 will cause the extrusion rod 114 to rotate in the opposite direction. The reverse rotation of the extrusion rod 114 will push the rotating pressure plate 96, so that the rotating pressure plate 96 is no longer located above the metal steel pipe 2, making it easier for the staff to remove the bent metal steel pipe 2.

[0047] Example 5: Based on Example 4, such as Figures 12-15 As shown, it also includes a positioning plate 12. The top of the support frame 1 is connected to the positioning plate 12 by bolts, and the positioning plate 12 is in contact with one end of the metal steel pipe 2.

[0048] The positioning plate 12 can hold the metal steel pipe 2 in place, so that the bending point of each metal steel pipe 2 to be bent is in the same position, which can further make the bending angle of the metal steel pipe 2 more accurate.

[0049] 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 bending device for producing metal products, characterized in that it includes: The device includes a support frame (1), a rotary motor (4), a hexagonal tube (5), a hexagonal rod (51), a rotary support shaft (6), a rotary mechanism, and an adjustable switch mechanism. The rotary motor (4) is fixedly connected to the top of the support frame (1). The hexagonal tube (5) is fixedly connected to the output shaft of the rotary motor (4). The hexagonal rod (51) is fixedly connected to the hexagonal tube (5). The rotary support shaft (6) is fixedly connected to the hexagonal rod (51). The rotary support shaft (6) is rotatably connected to the support frame (1). The rotary mechanism is mounted on the support frame (1) and connected to the rotary support shaft (6). A metal steel pipe (2) is placed on the rotary mechanism. The adjustable switch mechanism is mounted on the support frame (1) and connected to the rotary mechanism.

2. The bending device for producing metal products as described in claim 1, characterized in that, The rotating mechanism includes a missing gear (71), a support rod (72), a rotating shaft (73), a rotating gear (74), a bending table (75), a bending block one (751), and a bending block two (752). The missing gear (71) is fixedly connected to the rotating support shaft (6). The support rod (72) is fixedly connected to the top of the support frame (1). The rotating shaft (73) is rotatably connected to the top of the support rod (72). The rotating gear (74) is fixedly connected to the rotating shaft (73). The rotating gear (74) meshes with the missing gear (71). The bending table (75) is fixedly connected to the rotating shaft (73). The bending block one (751) and the bending block two (752) are fixedly connected to the top of the bending table (75). A metal steel pipe (2) is placed between the bending block one (751) and the bending block two (752).

3. The bending device for producing metal products as described in claim 2, characterized in that, The adjustable switch mechanism includes a movable plate (81), a handle (82), a baffle (83), a rack (84), a fixed connecting rod (85), a pinion (86), and a locking rod (87). The movable plate (81) is slidably connected to the support frame (1). The handle (82) is fixedly connected to the movable plate (81) and passes through the support frame (1). The baffle (83) is fixedly connected to the top of the movable plate (81) and contacts the metal steel pipe (2). The rack (84) is fixedly connected to the movable plate (81). The fixed connecting rod (85) is fixedly connected to the support frame (1). The pinion (86) is rotatably connected to the lower part of the fixed connecting rod (85) and meshes with the rack (84). The locking rod (87) is slidably connected to the support frame (1) and is locked between two teeth of the pinion (86).

4. The bending device for producing metal products as described in claim 3, characterized in that, It also includes a reciprocating mechanism, which is mounted on the rotary motor (4) and connected to the rotary support shaft (6). The reciprocating mechanism includes a fixed support rod (91), a nut (92), a reciprocating screw (93), a support plate (94), a fixed disc (95), a rotating pressure plate (96), and a torsion spring (97). Two fixed support rods (91) are fixedly connected to the top of the rotary motor (4), and a nut (92) is fixedly connected between the two fixed support rods (91). The rotary support shaft (6) A reciprocating screw (93) is fixedly connected to the support frame (1), and the reciprocating screw (93) is connected to the nut (92) by a thread. A support plate (94) is fixedly connected to the support frame (1), and a fixed disc (95) is fixedly connected to the support plate (94). The fixed disc (95) is rotatably connected to the rotating support shaft (6). A rotating pressure plate (96) is rotatably connected to the rotating support shaft (6), and a torsion spring (97) is connected between the rotating pressure plate (96) and the fixed disc (95).

5. A bending device for producing metal products as described in claim 4, characterized in that, It also includes an extrusion mechanism, which is set on a bending table (75) and connected to a support frame (1) and a support guide plate (102). The extrusion mechanism includes a support block (101), a support guide plate (102), an extrusion plate (103), a support tube (104), and a ring spring (105). The top of the bending table (75) is fixedly connected to the support block (101). The support guide plate (102) is fixedly connected to the support frame (1). The extrusion plate (103) is slidably connected to the support guide plate (102). The support tube (104) is fixedly connected to the extrusion plate (103). The support block (101) and the support tube (104) are slidably connected. A ring spring (105) is connected between the support block (101) and the extrusion plate (103). The metal steel pipe (2) is located between the baffle (83) and the extrusion plate (103).

6. The bending device for producing metal products as described in claim 5, characterized in that, It also includes an angle adjustment mechanism, which is set on the bending table (75). The angle adjustment mechanism includes a fixed ring (11), a sliding ring (111), a guide rod (112), a return spring (113), and a pressing rod (114). The fixed ring (11) is fixedly connected to the top of the bending table (75). The guide rod (112) is fixedly connected to the fixed ring (11). The sliding ring (111) is slidably connected to the upper part of the guide rod (112). The return spring (113) is connected between the fixed ring (11) and the sliding ring (111). The pressing rod (114) is fixedly connected to the top of the sliding ring (111). The pressing rod (114) is located above the metal steel pipe (2).

7. A bending device for producing metal products as described in claim 6, characterized in that, It also includes a positioning plate (12), which is fixedly connected to the top of the support frame (1), and the positioning plate (12) is in contact with one end of the metal steel pipe (2).

8. A bending device for producing metal products as described in claim 2, characterized in that, Both the first bending block (751) and the second bending block (752) are cylindrical structures, and the diameter of the first bending block (751) is larger than the diameter of the second bending block (752).

9. A bending device for producing metal products as described in claim 3, characterized in that, The handle (82) is provided with a small handle to facilitate the worker to push the handle (82).

10. A bending device for producing metal products as described in claim 6, characterized in that, The extrusion rod (114) consists of a small round rod and an arc-shaped plate fixedly connected to the top of the small round rod.

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