Electric hydraulic pipe bending machine

Abstract

The utility model relates to the technical field of industrial electro-hydraulic pressure, in particular to an electro-hydraulic pipe bending machine which comprises a supporting assembly used for fixing parts, a pipe bending assembly used for resisting pushing and pressing is arranged on the upper surface of the supporting assembly close to the right end, and a pressing block assembly used for pressing is arranged on the upper surface of the supporting assembly close to the left end. The supporting assembly comprises a U-shaped supporting plate and a drawing groove formed in the front end of the U-shaped supporting plate, a drawer is arranged in the drawing groove, the pipe bending assembly is sequentially provided with a first blocking ring, symmetrical pressing column assemblies and a second blocking ring from top to bottom, scales are arranged on the upper surface of the first blocking ring, and the pressing block assembly comprises a hydraulic rod and an arc-shaped pressing block arranged at the front end of the hydraulic rod. According to the pipe bending machine, additional equipment is convenient to carry through the arrangement of the drawer, the bending degree is flexibly adjusted through the arrangement of the pressing column assembly and the scales, and the pipe bending machine adapts to various pipeline sizes through the arrangement of the detachable arc-shaped pressing block.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial electric hydraulics, in particular to an electric hydraulic pipe bending machine. Background Art

[0002] The pipe bending machine is mainly based on the principle of vector pipe bending, using microcomputer control to complete any spatial three-dimensional pipe shape required by the user. It is an important processing equipment for modern bending and shaping. The pipe bending machine can be roughly divided into CNC pipe bending machine, hydraulic pipe bending machine, etc. The purpose of the pipe bending machine: Hydraulic pipe bending machine is mainly used for pipeline laying and repair in power construction, highway and railway construction, boilers, bridges, ships, furniture, decoration, etc. It has the advantages of multiple functions, reasonable structure, simple operation, convenient movement, and fast installation;

[0003] The utility model with announcement number CN206286361U discloses an electric hydraulic pipe bending machine, including a controller, a counterweight device and a mold, wherein a handle and a driving device are arranged at the upper end of the controller, and the driving device is connected to the hydraulic cylinder through a wire, the counterweight device is located at the right end of the hydraulic cylinder, and is connected to the upper end plate through a fixed rod, a bending block is arranged between the upper end plate and the lower end plate, the mold is located at the top of the hydraulic rod, a connecting rod and a protective block are fixed to the upper end of the lower end plate, and the counterweight device is connected to the triangular support frame through a fixed joint;

[0004] The above technical solution uses a longer wire, which greatly extends the working distance. The bending block with a cylindrical structure with wide ends and narrow middle, combined with the embedded protective block and mold, has a good bending effect. At the same time, the bending block can reduce the probability of steel pipe breakage, enhance safety, and prevent the damaged bent pipe from jumping out horizontally. However, the bending block, the embedded protective block and the mold are not convenient for accurate adjustment of the bending angle, and the entire device is not convenient to move. Utility Model Content

[0005] The purpose of the utility model is to provide an electric hydraulic pipe bender to solve the problem that the electric hydraulic pipe bender with the authorization announcement number CN206286361U proposed in the above background technology is limited in distance during operation and cannot be flexibly moved. When bending pipes, pipes of different sizes cannot be fixed, and the bending block cannot be moved to a certain degree.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An electric hydraulic pipe bending machine includes a support assembly for fixing parts, a pipe bending assembly for resisting pushing is provided on the upper surface of the support assembly near the right end, and a pressure block assembly for pressing is provided on the upper surface of the support assembly near the left end. The support assembly includes a U-shaped support plate and a drawer groove is provided at the front end of the U-shaped support plate, and a drawer is provided inside the drawer groove. The pipe bending assembly is provided with a first blocking ring, a symmetrical pressure column assembly, and a second blocking ring from top to bottom. The upper surface of the first blocking ring is provided with a scale. The pressure block assembly includes a hydraulic rod and an arc-shaped pressure block provided at the front end of the hydraulic rod. A plurality of pulleys are provided at the lower end of the U-shaped support plate.

[0008] Preferably, symmetrical branch pipes are provided on the upper surface of the U-shaped support plate near the right end, the rear ends of the symmetrical branch pipes are respectively welded and fixed to the right side of the U-shaped support plate, the lower ends of the symmetrical branch pipes are welded and fixed to the upper surface of the U-shaped support plate, and the front ends of the symmetrical branch pipes are both welded and fixed to the upper surface of the first blocking ring.

[0009] In the utility model, the branch pipe is welded and fixed to the U-shaped support plate, so that the branch pipe stands more stably, and the branch pipe is welded and fixed to the first blocking ring, so as to increase the overall stability of the bent pipe assembly.

[0010] Preferably, baffles are welded and fixed at both ends of the drawer, and plate grooves are provided at positions corresponding to the U-shaped support plate and the baffles, and the width of the plate grooves is adapted to the width of the baffles.

[0011] In the utility model, the position of the drawer is fixed by arranging the baffle plate and the plate groove, and at the same time, the connection between the drawer and the U-shaped support plate is made more stable, and the tools needed for use can be stored in the drawer for easy carrying and coordination.

[0012] Preferably, the baffle surface is provided with circular holes, the circular holes are provided with bolts, the plate grooves and the corresponding positions of the circular holes are provided with threaded holes, the bolts extend through the circular holes to the threaded holes, and are threadedly connected with the threaded holes.

[0013] In the utility model, bolts are arranged to be connected to the round holes and the threaded holes, so as to fix the drawer and prevent the items inside from falling off.

[0014] Preferably, the pressure column assembly includes a cylinder and pillars connecting both ends of the cylinder, and a sliding block is provided at one end of the pillar away from the cylinder. A screw is welded and fixed to one side of the sliding block, a nut is connected to the outer wall of the screw, and a screw hole is opened on the surface of the nut.

[0015] In the utility model, two pressure column assemblies are provided to provide fulcrums for both ends of the bent pipe. With the cooperation of two sliding blocks, the two pressure column assemblies can move horizontally on a first blocking ring with a scale. With the cooperation of a nut and a screw rod, the position of the pressure column assembly on the first blocking ring is fixed by friction force, thereby achieving the distance adjustment cooperation between the two fulcrums of the pipe to be bent. The distance between the two fulcrums is adjusted to achieve the curvature adjustment cooperation of the bent pipe. With the cooperation of the scale, it is helpful to accurately adjust the position of the pressure column assembly.

[0016] Preferably, the first blocking ring has arc-shaped openings at its lower end and on its left and right sides, and the second blocking ring has arc-shaped openings at its upper end and on its left and right sides. The sliding block at the upper end passes through the arc-shaped opening at the upper end and is threadedly connected to the nut via a screw rod, and the sliding block at the lower end passes through the arc-shaped opening at the lower end and is threadedly connected to the nut via a screw rod.

[0017] In the utility model, the position of the pressure column assembly is changed by moving the sliding block on the arc-shaped opening, the position of the pressure column assembly is fixed by the threaded connection between the nut and the screw, and the position adjustment at a certain degree is achieved by combining the pressure column assembly with a scale. When the pipe is bent after fixing, the pipe will be bent to a certain extent under the restriction of the pressure column assembly.

[0018] Preferably, a connecting rod is welded and fixed to one end of the hydraulic rod, and a connecting pipe is welded and fixed to one end of the arc-shaped pressure block away from the arc, and the connecting rod and the connecting pipe are plug-fitted and fixed in position by screws.

[0019] In the utility model, the connecting rod and the connecting pipe are plugged and matched, and the screws are easy to take out to facilitate the disassembly of the arc-shaped pressing block, so that arc-shaped pressing blocks of different sizes can be replaced when bending pipes of different sizes.

[0020] Preferably, the end of the hydraulic rod away from the connecting rod is fixedly connected to the upper end of the U-shaped support plate by screws, and the end of the second blocking ring is respectively welded and fixed to the left side of the recessed part of the U-shaped support plate.

[0021] In the utility model, the hydraulic rod and the U-shaped support plate are fixed by screws, and the first blocking ring and the U-shaped support plate are fixed by welding, so that the overall stability is increased and the structure is made more complete.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] 1. The utility model changes the position of the pressure column assembly by moving the sliding block on the arc-shaped opening, fixes the position of the pressure column assembly by the threaded connection between the nut and the screw, fixes the pressure column assembly at a certain degree by combining the pressure column assembly with a scale, and when bending the pipe after fixation, the pipe will be bent to a certain extent under the restriction of the pressure column assembly, and the arc pressure block is disassembled by unscrewing the screw on the upper end of the connecting pipe and then pulling the connecting pipe out of the connecting rod, thereby replacing arc pressure blocks of different sizes when bending pipes of different sizes.

[0024] 2. The utility model makes the branch pipe stand more firmly by welding and fixing it to the U-shaped support plate, increases the overall stability of the bent pipe assembly by welding and fixing the branch pipe to the first blocking ring, fixes the position of the drawer by setting a baffle and a plate groove, and sets a drawer to help store tools that need to be used, and fixes the drawer by setting bolts connected to the round hole and the threaded hole to prevent the internal items from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an overall schematic diagram of the pipe bending machine of the utility model;

[0026] Figure 2 This is a schematic diagram of the support assembly structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the briquetting assembly of the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the elbow assembly of the utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the pressure column assembly of the utility model.

[0030] The meaning of each number in the figure is:

[0031] 1. Support assembly; 10. Branch pipe; 11. U-shaped support plate; 12. Drawer; 120. Slot; 121. Plate slot; 122. Threaded hole; 123. Baffle; 124. Round hole; 125. Bolt;

[0032] 2. elbow assembly; 20. first blocking ring; 200. scale; 21. second blocking ring; 22. pressure column assembly; 220. cylinder; 221. support column; 222. sliding block; 223. screw rod; 23. nut; 230. screw hole;

[0033] 3. Pressing block assembly; 30. Hydraulic rod; 300. Connecting rod; 31. Arc-shaped pressing block; 310. Connecting pipe.

[0034] 4. Pulley. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] See also Figure 1-Figure 5 , this embodiment provides a technical solution:

[0037] An electric hydraulic pipe bending machine includes a support assembly 1 for fixing parts, a pipe bending assembly 2 for resisting pushing is provided on the upper surface of the support assembly 1 near the right end, a pressure block assembly 3 for pressing is provided on the upper surface of the support assembly 1 near the left end, the support assembly 1 includes a U-shaped support plate 11 and a drawer 120 is provided at the front end of the U-shaped support plate 11, a drawer 12 is provided inside the drawer 120, the pipe bending assembly 2 is provided with a first blocking ring 20, a symmetrical pressure column assembly 22, and a second blocking ring 21 from top to bottom, a scale 200 is provided on the upper surface of the first blocking ring 20, the pressure block assembly 3 includes a hydraulic rod 30 and an arc-shaped pressure block 31 provided at the front end of the hydraulic rod 30, and a plurality of pulleys 4 are provided at the lower end of the U-shaped support plate 11.

[0038] Among them, there is also a corresponding locking structure at the bottom of the pulley 4 near the wheel hub, and the locking structure cooperates with stepping on a pedal. When the pedal is pressed down, the wheel hub is locked in position, so that the position of the pulley 4 is fixed and the overall position is fixed. When the pedal is pressed to restore the initial position, the pulley 4 is easy to move flexibly, realizing overall moving and transporting coordination.

[0039] In this embodiment, a symmetrical branch pipe 10 is provided near the right end of the upper surface of the U-shaped support plate 11, and the rear ends of the symmetrical branch pipes 10 are welded and fixed to the right side of the U-shaped support plate 11, the lower ends of the symmetrical branch pipes 10 are welded and fixed to the upper surface of the U-shaped support plate 11, and the front ends of the symmetrical branch pipes 10 are welded and fixed to the upper surface of the first blocking ring 20.

[0040] In the utility model, the branch pipe 10 is welded and fixed to the first blocking ring 20 to increase the overall stability of the elbow assembly 2, and the branch pipe 10 is welded and fixed to the U-shaped support plate 11 to make the branch pipe 10 stand more stably.

[0041] Among them, baffles 123 are welded and fixed at both ends of the drawer 12 , and plate grooves 121 are opened at the corresponding positions of the U-shaped support plate 11 and the baffles 123 , and the width of the plate groove 121 is adapted to the width of the baffle 123 .

[0042] In the utility model, the position of the drawer 12 is fixed by setting the plate groove 121 and the baffle 123, and at the same time, the connection between the U-shaped support plate 11 and the drawer 12 is made more stable, and the tools needed for use are stored in the drawer 12, which is convenient for carrying and coordination.

[0043] Next, round holes 124 are formed on the surface of the baffle 123 , bolts 125 are formed in the round holes 124 , threaded holes 122 are formed at positions corresponding to the plate grooves 121 and the round holes 124 , the bolts 125 penetrate the round holes 124 and extend to the threaded holes 122 , and are threadedly connected to the threaded holes 122 .

[0044] In the present invention, the threaded hole 122 and the round hole 124 are threadedly connected by a bolt 125 to fix the drawer 12 and prevent the internal items from falling off.

[0045] Furthermore, the pressure column assembly 22 includes a cylinder 220 and a pillar 221 connected at both ends of the cylinder 220. A sliding block 222 is provided at one end of the pillar 221 away from the cylinder 220. A screw 223 is welded and fixed to one side of the sliding block 222. A nut 23 is connected to the outer wall of the screw 223, and a screw hole 230 is opened on the surface of the nut 23.

[0046] In the utility model, two pressure column assemblies 22 are provided to provide fulcrums for both ends of the bent pipe. With the cooperation of the two sliding blocks 222, the two pressure column assemblies 22 can move horizontally on the first blocking ring 20 with the scale 200. With the cooperation of the nut 23 and the screw rod 223, the position of the pressure column assembly 22 on the first blocking ring 20 is fixed by friction force, thereby achieving the distance adjustment cooperation between the two fulcrums of the pipe that needs to be bent. The distance between the two fulcrums is adjusted to achieve the adjustment cooperation of the curvature of the bent pipe. With the cooperation of the scale 200, it is helpful to accurately adjust the position of the pressure column assembly 22.

[0047] In addition, the first blocking ring 20 has an arc-shaped opening at its lower end and on its left and right sides, and the second blocking ring 21 has an arc-shaped opening at its upper end and on its left and right sides. The sliding block 222 at the upper end passes through the arc-shaped opening at the upper end and is threadedly connected to the nut 23 via the screw 223, and the sliding block 222 at the lower end passes through the arc-shaped opening at the lower end and is threadedly connected to the nut 23 via the screw 223.

[0048] In the utility model, the position of the pressure column assembly 22 is fixed by the threaded connection between the nut 23 and the screw rod 223, and the position of the pressure column assembly 22 is changed by moving the sliding block 222 on the arc-shaped opening. The pressure column assembly 22 is combined with the scale 200 to achieve position adjustment at a certain degree. When bending the pipe after fixing, the pipe will bend to a certain extent under the restriction of the pressure column assembly 22.

[0049] A connecting rod 300 is welded and fixed at one end of the hydraulic rod 30 , and a connecting pipe 310 is welded and fixed at one end of the arc-shaped pressing block 31 away from the arc. The connecting rod 300 and the connecting pipe 310 are plug-fitted and fixed in position by screws.

[0050] In the present invention, the connecting rod 300 is plugged into the connecting pipe 310 and the screws are easy to remove to facilitate the disassembly of the arc pressing block 31, so that the arc pressing blocks 31 of different sizes can be replaced when bending pipes of different sizes.

[0051] Finally, it should be noted that the end of the hydraulic rod 30 away from the connecting rod 300 is fixedly connected to the upper end of the U-shaped support plate 11 by screws, and the ends of the second blocking ring 21 are respectively welded and fixed to the left side of the recessed part of the U-shaped support plate 11.

[0052] In the utility model, the hydraulic rod 30 and the U-shaped support plate 11 are fixed by screws, and the first blocking ring 20 and the U-shaped support plate 11 are fixed by welding, so that the overall stability is increased and the structure is made more complete.

[0053] When an electric hydraulic pipe bending machine of the present embodiment is used, firstly, the rear ends of the symmetrical branch pipes 10 are respectively welded and fixed to the right sides of the U-shaped support plate 11, a groove 120 is opened on the front surface of the U-shaped support plate 11, the drawer 12 is inserted into the groove 120, and the baffles 123 are welded and fixed at both ends of the drawer 121, and then the U-shaped support plate 11 and the baffle 123 are opened at the corresponding positions, and the surface of the baffle 123 is opened. Threaded holes 122 are opened at the corresponding positions of the plate grooves 121 and the circular holes 124, and then the bolts 125 are threadedly connected with the threaded holes 122, and the lower end and the left and right sides of the first blocking ring 20 are opened with arc openings, and the upper end and the left and right sides of the second blocking ring 21 are opened with arc openings, and the upper end is opened with arc openings. The sliding block 222 passes through the arc-shaped opening at the upper end and is threadedly connected to the nut 23 through the screw 223, and then the sliding block 222 at the lower end passes through the arc-shaped opening at the lower end and is threadedly connected to the nut 23 through the screw 223, one end of the hydraulic rod 30 is welded to fix the connecting rod 300, the arc-shaped pressure block 31 is welded to fix the connecting pipe 310 at the end away from the arc, the connecting rod 300 is threadedly connected to the connecting pipe 310, the end of the hydraulic rod 30 away from the connecting rod 300 is welded and fixed to the left side of the upper end of the U-shaped support plate 11, the non-arc ends of the first blocking ring 20 and the second blocking ring 21 are respectively welded and fixed to the left side of the recessed part of the U-shaped support plate 11, and finally the front ends of the symmetrical branch pipes 10 are welded and fixed to the upper surface of the first blocking ring 20.

[0054] When it is necessary to bend the pipe to a specific degree, first move the pressure column assembly 22 along the arc-shaped opening to the required degree through the sliding blocks 222 at the upper and lower ends. After the movement, the screw 223 on the sliding block 222 is threadedly connected to the nut 23, and then the hydraulic rod 30 is started through an external power supply. The hydraulic rod 30 drives the connecting pipe 310 whose front end is threadedly connected to the connecting rod 300, and then drives the arc-shaped pressure block 31 on the connecting pipe 310 to press forward, pressing the pipe to the position fixed by the pressure column assembly 22, thereby achieving a specific degree of bending.

[0055] When it is necessary to press pipes of different sizes, the arc-shaped pressing block 31 is unscrewed by unscrewing the screw on the upper end of the connecting tube 310, and then the connecting tube 310 is pulled out from the connecting rod 300, and the arc-shaped pressing block 31 of the required size is replaced, and the connecting tube 310 on the new arc-shaped pressing block 31 is inserted into the connecting rod 300 and the screw is screwed in.

[0056] When auxiliary items need to be stored, the bolt 125 is first twisted out, and then the drawer 12 is pulled out by the handle. Then, the items are placed in the drawer 12 and inserted into the drawer groove 120 again. Finally, the bolt 125 is extended through the round hole 124 to the threaded hole 122 and is threadedly connected with the threaded hole 122.

Claims

1. An electric hydraulic pipe bender, comprising a support assembly (1) for fixing a component, a pipe bending assembly (2) for resisting pushing is provided on the upper surface of the support assembly (1) near the right end, and a pressing block assembly (3) for pressing is provided on the upper surface of the support assembly (1) near the left end, characterized in that: The support assembly (1) comprises a U-shaped support plate (11) and a drawer groove (120) provided at the front end of the U-shaped support plate (11); a drawer (12) is provided inside the drawer groove (120); the bent pipe assembly (2) is provided with a first blocking ring (20), a symmetrical pressure column assembly (22), and a second blocking ring (21) from top to bottom; a scale (200) is provided on the upper surface of the first blocking ring (20); the pressure block assembly (3) comprises a hydraulic rod (30) and an arc-shaped pressure block (31) provided at the front end of the hydraulic rod (30); and a plurality of pulleys (4) are provided at the lower end of the U-shaped support plate (11).

2. An electric hydraulic pipe bender according to claim 1, characterized in that: Symmetrical branch pipes (10) are provided near the right end of the upper surface of the U-shaped support plate (11); the rear ends of the symmetrical branch pipes (10) are respectively welded and fixed to the right side of the U-shaped support plate (11); the lower ends of the symmetrical branch pipes (10) are welded and fixed to the upper surface of the U-shaped support plate (11); and the front ends of the symmetrical branch pipes (10) are both welded and fixed to the upper surface of the first blocking ring (20).

3. An electric hydraulic pipe bender according to claim 2, characterized in that: Baffles (123) are welded and fixed at both ends of the drawer (12); plate grooves (121) are provided at corresponding positions of the U-shaped support plate (11) and the baffles (123); and the width of the plate groove (121) matches the width of the baffles (123).

4. The electric hydraulic pipe bender according to claim 3, characterized in that: The baffle (123) is provided with a circular hole (124) on its surface, and a bolt (125) is provided in each of the circular holes (124). The plate groove (121) is provided with a threaded hole (122) at a position corresponding to the circular hole (124), and the bolt (125) passes through the circular hole (124), extends to the threaded hole (122), and is threadedly connected to the threaded hole (122).

5. The electric hydraulic pipe bender according to claim 1, characterized in that: The pressure column assembly (22) comprises a cylinder (220) and a pillar (221) connected at both ends of the cylinder (220), and a sliding block (222) is provided at one end of the pillar (221) away from the cylinder (220), and a screw rod (223) is welded and fixed on one side of the sliding block (222), and a nut (23) is connected to the outer wall of the screw rod (223), and a screw hole (230) is opened on the surface of the nut (23).

6. The electric hydraulic pipe bender according to claim 5, characterized in that: The first blocking ring (20) has an arc-shaped opening at its lower end and on its left and right sides, and the second blocking ring (21) has an arc-shaped opening at its upper end and on its left and right sides. The sliding block (222) at the upper end passes through the arc-shaped opening at the upper end and is threadedly connected to the screw nut (23) via a screw rod (223), and the sliding block (222) at the lower end passes through the arc-shaped opening at the lower end and is threadedly connected to the screw nut (23) via a screw rod (223).

7. An electric hydraulic pipe bender according to claim 6, characterized in that: A connecting rod (300) is welded and fixed to one end of the hydraulic rod (30), and a connecting pipe (310) is welded and fixed to one end of the arc-shaped pressing block (31) away from the arc. The connecting rod (300) and the connecting pipe (310) are plug-fitted and fixed in position by screws.

8. The electric hydraulic pipe bender according to claim 7, characterized in that: One end of the hydraulic rod (30) away from the connecting rod (300) is fixedly connected to the upper end of the U-shaped support plate (11) by means of screws, and the ends of the second blocking ring (21) are respectively welded and fixed to the left side surface of the recessed portion of the U-shaped support plate (11).

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