CN211803220U

CN211803220U - Pipe bender

Info

Publication number: CN211803220U
Application number: CN201922448920.0U
Authority: CN
Inventors: 刘彩阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-10-30
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a bending machine. The pipe bending machine comprises a frame, a pipe bending wheel shaft and a pipe bending jacking part, wherein the pipe bending wheel comprises a wheel core, a baffle plate and a base plate; the backing plate and the baffle plate are respectively arranged at the two axial sides of the wheel core; the wheel core is detachably arranged between the wheel core and the baffle plate; the baffle, the wheel core and the base plate enclose a bent pipe wheel groove; through baffle and return bend shaft thread tightening or screw thread pressing piece roof pressure baffle restriction baffle along return bend shaft to the activity, guarantee the position of return bend wheel baffle, make things convenient for the clamp plate to dismantle simultaneously, convenient operation to the pipe of treating of different thickness sizes, can make the bending machine adapt to the not unidimensional pipe of treating processing through the mode of changing the wheel core behind the dismantlement baffle, the utility model discloses a bending machine can satisfy the not unidimensional pipe of treating processing only through changing the wheel core, because wheel core, baffle and backing plate enclose into return bend wheel recess, wheel core simple structure, and is small, has saved the material, and the processing degree of difficulty is low, has reduced the bending machine cost.

Description

Pipe bender

Technical Field

The utility model relates to a bending machine.

Background

The pipe bender is used for bending the straight pipe so as to meet the use requirement. At present, most of common pipe bending devices are suitable for pipes of the same size, and straight pipes of different sizes are processed by different pipe bending machines.

Chinese patent with publication number CN208592265U and publication number 2019.03.12 discloses a tube bending device suitable for thin-wall square tubes of different sizes, comprising a tube bending wheel fixedly mounted on an operation table, tube bending arms rotatably mounted on the upper and lower surfaces of the tube bending wheel respectively, a tube bending pinch roller fitted with the tube bending wheel and mounted between the two tube bending arms, rectangular grooves for fitting and compressing the thin-wall square tubes respectively and correspondingly arranged on the peripheries of the tube bending wheel and the tube bending pinch roller, horizontal compressing and adjusting devices for adjusting the distance between the tube bending pinch roller and the tube bending wheel mounted on the tube bending arms, thin-wall square tubes of different widths mounted in the two rectangular grooves by adjusting the horizontal compressing and adjusting devices, a vertical compressing and adjusting device mounted between the two rectangular grooves on the tube bending arm, thin-wall square tubes of different heights mounted in the two rectangular grooves by adjusting the vertical compressing and adjusting devices, the horizontal compressing and vertical compressing and adjusting devices respectively and correspondingly, so that one pipe bending device can be suitable for bending the thin-wall square pipes with different sizes in a certain range. The pipe bending device is only suitable for thin-wall square pipes with different width sizes when in use, different pipe bending wheels or other pipe bending machines are required to be replaced for square pipes with different thicknesses when in actual use, and the problem of high cost of the pipe bending machines is caused due to the complex integral structure of the pipe bending wheels.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bending machine for solve present bending machine problem with high costs.

The utility model discloses a bending machine adopts following technical scheme:

a frame;

the pipe bending wheel is provided with a pipe bending wheel groove for accommodating a pipe to be processed;

the elbow wheel shaft is arranged on the rack, and the elbow wheel is arranged on the elbow wheel shaft;

the bent pipe jacking piece is matched with the bent pipe wheel to bend the pipe;

the pipe bending wheel comprises a wheel core, a baffle plate and a base plate;

the backing plate and the baffle plate are respectively arranged at the two axial sides of the wheel core;

the wheel core is detachably arranged between the wheel core and the baffle plate and is provided with a pipe bending wheel forming surface for forming a pipe to be processed;

the baffle, the wheel core and the base plate are enclosed to form the bent pipe wheel groove, and the bent pipe wheel forming surface is positioned at the bottom of the bent pipe wheel groove;

the baffle is in threaded connection with the elbow pipe wheel shaft, or the elbow pipe wheel shaft is provided with a thread pressing piece, and the thread pressing piece presses the baffle to limit the baffle to move axially along the elbow pipe wheel.

The utility model has the advantages that: the utility model discloses a return bend wheel of bending machine is split type structure, including baffle, wheel core and backing plate, through baffle and return bend shaft thread tightening or screw thread compaction piece roof pressure baffle restriction baffle along return bend shaft axial activity, guarantee the position of return bend wheel baffle, make things convenient for the clamp plate to dismantle simultaneously, convenient operation, to the pipe of treating of different thickness sizes, can make the bending machine adapt to not unidimensional pipe of treating processing through the mode of changing the wheel core behind the dismantlement baffle, the utility model discloses a bending machine only can satisfy the pipe of treating of adaptation unidimensional through changing the wheel core, because wheel core, baffle and backing plate enclose into return bend wheel recess, wheel core simple structure, small, saved the material, the processing degree of difficulty is low, has reduced the bending machine cost.

Further, the baffle is in press fit with the wheel core. The wheel core is not easy to shake, and the stability of the wheel core is ensured.

Furthermore, the wheel core is of a split structure, the wheel core comprises at least two wheel core petals with different radiuses, each wheel core petal is arranged along the circumferential direction of the bent pipe wheel shaft, and the wheel core is formed by combining the wheel core petals; or the wheel core comprises at least two ring cores, each ring is arranged along the radial direction of the wheel axle of the elbow pipe, and the wheel core is formed by sleeving the ring cores together. One wheel core can be suitable for pipes to be processed with different sizes, and the processing cost of the pipe bender is further reduced.

Furthermore, the wheel core is of a split structure, the wheel core comprises at least two wheel core petal sets, each wheel core petal set is arranged along the circumferential direction of the bent pipe wheel shaft, the wheel core is formed by combining the wheel core petals, and the wheel core petal sets comprise at least two wheel core petals arranged along the radial direction of the bent pipe wheel. The wheel core petal set is suitable for various pipes to be processed with different sizes, and the processing cost of the pipe bender is further reduced.

Furthermore, the number of the wheel core lobes is two or three, and the central angles corresponding to the wheel core lobes are equal. The central angles of the wheel core lobes are equal, the structure is simple, and the installation and the use are convenient.

Furthermore, the wheel core valve is provided with a guide block, the baffle and/or the base plate is provided with a guide groove, and the guide block is in guide sliding fit with the guide groove along the radial direction of the bent pipe wheel shaft. The reliability of the core segment is enhanced, and the installation is convenient.

Furthermore, the rack is rotatably provided with a connecting rod, the connecting rod is positioned on one axial side of the elbow wheel, the backing plate is positioned between the wheel core and the connecting rod, the rotating axis of the connecting rod is superposed with the axis of the elbow wheel shaft, the elbow jacking piece is an elbow pinch roller arranged on the connecting rod, and the elbow pinch roller is rotatably arranged on the connecting rod. Can reduce the impaired degree in pipe fitting surface through return bend pinch roller, the baffle is in simultaneously and avoids the connecting rod to interfere the dismantlement clamp plate between wheel core and the connecting rod, and the convenience is to the dismantlement of wheel core.

Furthermore, be equipped with driving motor on the connecting rod, the frame goes up the rotation and is equipped with the fluted disc, and the fluted disc axis coincides with connecting rod rotation axis, and driving motor and fluted disc transmission cooperation are in order to drive the connecting rod and rotate. The production efficiency can be improved by driving the driving motor.

Furthermore, the pipe bender also comprises a connecting rod locking piece and a pipe bending wheel locking piece;

the connecting rod locking piece is used for locking the connecting rod by matching with the rack so as to enable the connecting rod to stop rotating relative to the rack;

the pipe bending wheel locking piece is used for locking the pipe bending wheel in a matched manner with the rack so as to enable the pipe bending wheel to be relatively locked with the rack;

the connecting rod is provided with a driving motor, the elbow pipe wheel shaft is rotatably assembled on the rack, the elbow pipe wheel is fixed on the elbow pipe wheel shaft, a fluted disc is fixed on the elbow pipe wheel shaft, the driving motor is in transmission fit with the fluted disc, the driving motor drives the connecting rod to rotate when the elbow pipe wheel is in rotation-stopping fit with the rack, and the driving motor drives the elbow pipe wheel to rotate when the connecting rod is in rotation-stopping fit with the rack. According to the actual needs, can select connecting rod or return bend wheel action in a flexible way, be applicable to different environment.

Further, the bending machine is still including being used for filling up the cushion between return bend wheel and return bend pinch roller, and the cushion has the cushion profiled surface that is used for towards return bend wheel groove mouth and treats processing pipe tight fit and the pinch roller fitting surface with return bend pinch roller tight fit, and the cushion profiled surface sets up back on the back with the pinch roller fitting surface. The damage degree of the surface of the pipe to be processed can be further reduced through the cushion block.

Drawings

Fig. 1 is a diagram illustrating a state of the pipe bender according to an embodiment 1 of the present invention;

fig. 2 is a cross-sectional view of the bending machine according to embodiment 1 of the present invention;

fig. 3 is a bottom view of the wheel core of the bending machine according to embodiment 1 of the present invention;

fig. 4 is a cross-sectional view of a wheel core of the bending machine according to embodiment 1 of the present invention;

fig. 5 is a cross-sectional view of the bending machine according to embodiment 2 of the present invention;

fig. 6 is a schematic structural view of a bending wheel of the bending machine according to embodiment 3 of the present invention;

fig. 7 is a cross-sectional view (partially not shown) of a bending machine according to an embodiment 5 of the present invention;

fig. 8 is a cross-sectional view (partially not shown) of a bending machine in accordance with an embodiment 6 of the present invention;

fig. 9 is a cross-sectional view (partially not shown) of the bending machine of embodiment 7 of the bending machine of the present invention;

in the figure: 1-a frame; 11-a mounting table; 12-a leg; 13-a stopper; 2-pipe bending wheel; 21-bending the groove of the tube wheel; 22-wheel core; 221-wheel core lobe set; 2211-core lobe; 2212-guide block; 23-a baffle plate; 24-a backing plate; 25-a bent tube wheel lock pin; 261-baffle pin hole; 262-backing plate pin hole; 3-bent pipe wheel axle; 31-a threaded segment; 32-a compression nut; 4-a connecting rod; 5-a bearing; 6-bending a pipe pressing wheel; 7-a pipe to be processed; 8-cushion block; 81-cushion block forming surface; 82-a pinch roller matching surface; 9-a pinch roller shaft; 101-wheel seat; 102-a lead screw nut mechanism; 103-a lead screw nut mechanism; 208-cushion block; 221-elbow wheel groove; 222-a wheel core; 281-cushion block molding surface; 322-core of the wheel; 3221-core lobe; 501-driving a motor; 502-fluted disc; 503-driven gear; 504-connecting rod; 505-elbow axle; 506-bending the tube pinch roller; 507-a motor mounting bracket; 508-a mounting table; 601-elbow wheel shaft; 602-a mounting table; 603-a pipe bending wheel; 604-fluted disc; 605-a motor mount; 606-connecting rod locking pin; 607-elbow wheel lock pin; 608-a connecting rod; 609-drive the motor; 701-a fluted disc; 702-an installation table; 703-connecting rod locking pin; 704-elbow wheel lock pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

The utility model discloses a bending machine's embodiment 1:

in this embodiment, a pipe to be processed is described as an example of a square pipe.

As shown in fig. 1 to 4, the pipe bending machine of the present invention includes a frame 1, a pipe bending wheel 2 disposed on the frame 1, the frame 1 includes a mounting table 11 and a leg 12 disposed below the mounting table 11, the mounting table 11 is rotatably assembled with a pipe bending wheel shaft 3, the pipe bending wheel 2 is fixed on the pipe bending wheel shaft 3, the pipe bending wheel 2 is provided with a pin hole, the pipe bending wheel lock pin 25 is inserted in the mounting table 11, and the pipe bending wheel 2 is prevented from rotating. In other embodiments, the elbow shaft may be directly fixed to the mounting table, for example, the elbow shaft may have a step to engage with the stop of the mounting table, and a nut is disposed on the other side of the mounting table to press the step against the mounting table to fix the elbow shaft.

As shown in fig. 1 and 2, the frame 1 is further provided with a connecting rod 4, the connecting rod 4 is rotatably assembled on the elbow wheel shaft 3 through a bearing 5, and the connecting rod 4 is rotatably provided with an elbow pinch roller 6. As shown in fig. 1 and 2, a wheel seat 101 is slidably assembled on the connecting rod 4, a pinch roller shaft 9 of the elbow pinch roller 6 is installed on the wheel seat 101, the wheel seat 101 is U-shaped, the wheel seat 101 is connected with a lead screw nut mechanism 102 for adjusting the position of the elbow pinch roller 6, a lead screw of the lead screw nut mechanism 102 is in running fit with the wheel seat 101, a screw is fixed on the connecting rod 4, the wheel seat 101 can be driven to reciprocate on the connecting rod 4 by rotating the lead screw, and then the distance between the elbow pinch roller 6 and the elbow pinch roller 2 is adjusted to adapt to pipes to be processed with different sizes. A press wheel shaft 9 is fixed on the connecting rod 4 through screw threads, a bent pipe press wheel 6 is rotatably assembled on the press wheel shaft 9 through a bearing 5,

the connecting rod 4 sets up in return bend wheel 2 downside, and return bend pinch roller 6 sets up in the same one side of connecting rod 4 with return bend wheel 2. In other embodiments, in order to facilitate the rotation of the connecting rod, rolling members such as balls or rollers can be arranged between the connecting rod and the mounting table.

The pipe bending machine in this embodiment is a manual pipe bending machine, and the connecting rod 4 is operated to drive the pipe bending pinch roller 6 on the connecting rod 4 to revolve around the axis of the pipe bending wheel 2, so that the pipe bending wheel 2 and the pipe bending pinch roller 6 perform pipe bending operation on the pipe 7 to be processed. The mounting table 11 is provided with a stop block 13 which is matched with the pipe 7 to be processed in a stop manner when the pipe 7 to be processed is bent, in the embodiment, the position of the stop block 13 is adjustable, the stop block 13 is assembled on the mounting table 11 in a guide and sliding manner, the mounting table is provided with a lead screw nut mechanism 103 which drives the stop block 13 to move, the lead screw nut mechanism 103 drives the stop block 13 to slide, and then the position of the stop block 13 is adjusted to be matched with the pipes 7 to be processed with different sizes.

The pipe bender still includes cushion 8, and cushion 8 is used for filling up between return bend wheel 2 and return bend pinch roller 6, has on the cushion 8 towards return bend wheel 2's cushion profiled surface 81 and with the pinch roller fitting surface 82 of return bend pinch roller 6 tight fit, and cushion profiled surface 81 sets up with pinch roller fitting surface 82 back of the body mutually, and cushion profiled surface 81 is used for and treats to process a tub tight fit. The last return bend wheel recess 21 that holds the pipe waiting to be formed that is equipped with of return bend wheel 2, the notch of return bend wheel recess 21 is relative with cushion profiled surface 81 during the use, and in this embodiment, cushion 8 stretches into return bend wheel recess 21 to make cushion profiled surface 81 on the cushion 8 and return bend wheel recess 21 enclose into and wait to process the shaping hole of pipe adaptation. The size of the forming hole can be adjusted by adjusting the position of the cushion block forming surface 81 on the cushion block 8, and then the pipe to be processed with different sizes can be adapted. In other embodiments, the cushion block can also be provided with a cushion block groove opposite to the groove opening of the elbow pipe wheel, at the moment, the cushion block does not extend into the elbow pipe groove, and the groove bottom surface of the cushion block groove forms a cushion block forming surface.

As shown in fig. 2 and 3, in order to be suitable for the pipe 7 to be processed of different specifications, the pipe bending machine of the present invention is suitable for the pipe bending requirements of different radii, and the pipe bending machine of the present invention sets multiple sets of wheel cores according to actual requirements. In this embodiment, the elbow wheel 2 is a split structure, and the elbow wheel 2 includes a wheel core 22, a baffle 23 and a backing plate 24, wherein the baffle 23 and the backing plate 24 are disposed at two axial sides of the wheel core 22, the baffle 23 is located at an upper side of the wheel core 22, the backing plate 24 is located at a lower side of the wheel core 22, and the backing plate 24 is welded and fixed on the elbow wheel shaft 3. Wheel core 22 is removable to be set up between wheel core and baffle, and wheel core 22 is equipped with and is used for treating the processing pipe and carry out fashioned return bend wheel profiled surface, and baffle 23, wheel core 22 and backing plate 24 enclose into return bend wheel recess 21, and return bend wheel profiled surface is in the tank bottom of return bend wheel recess 21 for set up with cushion profiled surface 81 relatively.

The baffle 23 is provided with a baffle central hole for the elbow wheel shaft to pass through and a baffle pin hole 261 for the elbow wheel lock pin 25 to pass through, the backing plate 24 is provided with a backing plate central hole for the elbow wheel shaft to pass through and a backing plate pin hole 262 for the elbow wheel lock pin 25 to pass through, and the backing plate is sleeved on the elbow wheel shaft and then welded and fixed. The wheel core 22 and the baffle plate 23 are slidably sleeved on the elbow pipe wheel shaft 3, a threaded section 31 is arranged at the top of the elbow pipe wheel shaft 3, a compression nut 32 used for compressing the baffle plate 23 is arranged on the threaded section 31, and the compression nut 32 presses the baffle plate 23 to enable the baffle plate 23 to compress the wheel core 22. During disassembly, the compression nut 32 is unscrewed, the baffle plate 23 and the wheel core 22 are disassembled upwards, and the wheel core 22 is replaced by a new wheel core and then fixed again, so that the operation is simple and the use is convenient. The compression nut forms a thread compression piece arranged on the elbow pipe wheel shaft. In other embodiments, the pipe bending wheel can be used without locking the pipe bending wheel locking pin, and the pipe bending wheel locking pin is suitable for the case that the pipe bending wheel can rotate in a small angle during processing, for example, when a pipe bending with a larger bending angle is processed.

In this embodiment, as shown in fig. 3 and 4, the wheel core 22 is a split structure, and includes two wheel core segment sets 221, the two wheel core segment sets 221 are arranged along the circumferential direction of the elbow wheel shaft 3, the wheel core 22 is formed by joining the two wheel core segment sets 221, the wheel core segment set 221 is formed by two wheel core segments 2211 arranged along the radial direction of the elbow wheel 3, and the central angle corresponding to each wheel core segment 2211 in this embodiment is 180 degrees. In this embodiment, each of the core pieces 2211 is sandwiched between the shim plate 24 and the baffle plate 23 by the pressing action of the baffle plate 23. In order to ensure the stability of the core wheel segment 2211, in this embodiment, the sliding groove 241 is provided on the backing plate 24, the guide block 2212 is provided on the core wheel segment 2211, as shown in fig. 3, three guide blocks 2212 are provided on each core wheel segment 2211, the guide blocks 2212 are in guiding sliding fit with the guide groove 241 along the radial direction of the bent pipe wheel shaft 3, and the two core wheel segments 2211 of the same core wheel segment group 221 share the guide groove 241. Under the action of the guide grooves 241 and the guide blocks 2212, the wheel core petal 2211 can bear larger acting force in the circumferential direction when the pipe to be processed 7 is bent. Of the two core segment groups 221, the core segment group 221 to be used is directed toward the bending press wheel. The two core segment groups 221 correspond to the two elbow wheel lock pins 25 one by one, and the elbow wheel lock pins 25 are used for locking the positions of the core segment groups 221, so that the accurate positions of the core segment groups 221 are guaranteed to be locked. In other embodiments, the elbow axle can be fixed on the mounting table, and at the moment, only one group of core segment groups can be fixed, when the core segment groups need to be replaced, the baffle is loosened, the other core segment group is assembled towards the elbow pinch roller, and at the moment, the sliding groove on the base plate is only provided with one group.

The utility model discloses a wheel core 22 adopts the form of wheel core lamella 2212, when changing wheel core 22, only needs to loosen baffle 23 and can take wheel core lamella 2212 out, need not pull down baffle 23 from return bend shaft 3. Two bent pipes with different bend angle radiuses can be processed by the two core plates 2211 of the same core plate group 221, and when the bend angle needing to be processed is small, in order to avoid interference between the core plate groups, only one core plate group 221 needs to be installed during processing. In this embodiment, when treating the processing pipe thickness and changing, need change the wheel core, when treating processing pipe width size change, only need adjust the position of return bend pinch roller can, when the bent angle radius changes, can adjust the wheel core lamella.

In other embodiments, the same core segment set may not share the sliding groove, and at this time, more sliding grooves need to be disposed on the backing plate.

The utility model discloses a during the assembly of pipe bending machine, with

backing plate

24 and 3 welding backs of return bend shaft, with connecting

rod

4 and 3 through the assembly of bearing 5 of return bend shaft together, then connecting

rod

4 and 3 assembly of return bend shaft are on mount table 11, then install return bend pinch roller 6, return bend wheel 2's wheel core 22, baffle 23, select one of them wheel core lamella group towards return bend pinch roller, insert return bend wheel lockpin, keep return bend wheel and mount table spline. During the use, will treat that processing pipe 7 stretches into in the return bend wheel recess 21 of return bend wheel 2, place cushion 8 in between return bend pinch roller 6 and return bend wheel 2 to make cushion 8 stretch into in return bend wheel recess 21, then operation connecting rod 4 makes connecting rod 4 drive return bend pinch roller 6 action, under return bend pinch roller 6 and cushion 8 effect, makes gradually treating processing pipe 7 crooked, the messenger treats that processing pipe 7 required angle of bending department can. When the corner radius of the workpiece needs to be changed

The embodiment 2 of the pipe bender of the present invention, the difference between the pipe bender in this embodiment and the embodiment 1 of the pipe bender is only that: as shown in fig. 5, the pipe bender in this embodiment is suitable for processing round pipes, the molding surface of the pipe bending wheel at the bottom of the pipe bending wheel groove 221 on the pipe bending wheel 222 is an arc surface, and the corresponding block molding surface 281 on the block 208 is also an arc surface. Each core piece 22211 is provided with an arc-shaped groove, and in order to ensure the support stability between the radially adjacent core pieces 22211, the adjacent core pieces 22211 are supported by the plane at the groove openings of the arc-shaped grooves.

The embodiment 3 of the pipe bender of the present invention, the difference between the pipe bender in this embodiment and the embodiment 1 of the pipe bender is only that: as shown in fig. 6, in the present embodiment, the wheel core 322 is a split structure, and includes three wheel core segments 3221 with different radii, the wheel core 322 is formed by the wheel core segments 3221 being aligned, and a central angle corresponding to the wheel core segment 3221 is 120 degrees. When in use, the wheel core segment 3221 with different radiuses can be adjusted to cooperate with the pipe bending pinch roller to bend pipes according to requirements. One wheel core 322 can be adapted to three different sizes of pipes to be processed, further reducing costs. The three wheel core lobes 3221 are welded together. In other embodiments, three core segments may be secured to the elbow axle by screws; in other embodiments, the central angles corresponding to the three core segments may not be equal, for example, the angles corresponding to the three core segments are 90 degrees, 120 degrees, and 150 degrees, respectively. In other embodiments, a fixing groove may be formed at a joint of adjacent core segments, a fixing block is disposed in the fixing groove, and the two core segments are fixed to the fixing plate by screws.

The embodiment 4 of the pipe bender of the present invention, the difference between the pipe bender in this embodiment and the embodiment 3 of the pipe bender is only that: in this embodiment, the wheel core includes four wheel core lobes with different radii, and the central angle corresponding to the wheel core lobe is 90 degrees.

The embodiment 5 of the pipe bender of the present invention, the pipe bender in this embodiment is different from the embodiment 1 of the pipe bender only in that: as shown in fig. 7, in this embodiment, the pipe bending machine is an electric pipe bending machine, a fluted disc 502 is disposed at the bottom of the mounting table 508, the axis of the fluted disc coincides with the axis of the pipe bending wheel shaft 505, the driving motor 501 is disposed on the connecting rod 504, the motor mounting rack 507 is disposed on the connecting rod 504, the driving motor 501 is fixed on the motor mounting rack 507, the driving motor 501 is connected to the driven gear 503 through a speed reducer, and the driven gear 503 is engaged with the fluted disc 502, so that the driving motor 501 drives the connecting rod 504 to rotate, and the pipe bending pressure wheel 506 is. In this embodiment, the driving motor is a servo motor.

The embodiment 6 of the pipe bender of the present invention, the difference between the pipe bender of the present embodiment and the embodiment 5 of the pipe bender described above is only: as shown in fig. 8, the elbow wheel shaft 601 is rotatably mounted on the mounting table 602, the elbow wheel 603 and the fluted disc 604 are fixed on the elbow wheel shaft 601, the elbow machine includes a connecting rod lock pin 606 and an elbow wheel lock pin 607, the connecting rod lock pin 606 is disposed on the motor mounting bracket 605, and the connecting rod lock pin 606 is inserted into a connecting rod lock hole on the mounting table 602 and is used for cooperating with the mounting table 602 to lock the connecting rod 608, so that the connecting rod 608 is locked to the mounting table 602. The elbow wheel locking pin 607 is inserted into the elbow wheel locking hole on the mounting table 602, and is used for locking the elbow wheel 603 in cooperation with the mounting table 602, so that the elbow wheel 603 and the mounting table 602 are relatively locked. The connecting rod lock pin 606 and the bending wheel lock pin 607 can be pulled out, when the bending wheel 603 is in rotation stop fit with the mounting table 602, the driving motor 609 drives the connecting rod 608 to rotate, and when the connecting rod 608 is in rotation stop fit with the mounting table 602, the driving motor 609 drives the bending wheel 603 to rotate. The connecting rod lock pin forms a connecting rod locking piece used for locking the connecting rod in a matched mode with the rack, and the bent pipe wheel lock pin forms a bent pipe wheel locking piece used for locking the bent pipe wheel in a matched mode with the rack. It should be noted that when the locking pin of the pipe bending wheel is unlocked, the pipe bending wheel needs to be pressed tightly in the groove of the pipe bending wheel during pipe bending, or a snap ring is arranged on the pipe bending wheel to drive the pipe to be processed to be bent along with the movement of the pipe bending wheel.

The embodiment 7 of the pipe bender of the present invention is different from the embodiment 6 of the pipe bender only in that: as shown in fig. 9, in the present embodiment, the toothed disc 701 is disposed on the upper side of the mounting table 702, the pipe bender includes a connecting rod lock pin 703 and a pipe bending wheel lock pin 704, and the connecting rod lock pin 703 is inserted into corresponding holes on the connecting rod 705 and the mounting table 702.

The embodiment 8 of the pipe bender of the present invention, the difference between the pipe bender of the present embodiment and the embodiment 6 of the pipe bender is only that: the mounting table bottom is provided with driving motor, and driving motor is connected with the fluted disc through the speed reducer, sets up driven gear on the connecting rod, and driven gear and connecting rod spline, fluted disc axis and return bend shaft axis coincidence, and driven gear axis and return bend pinch roller axis coincidence, driving motor pass through the fluted disc and drive the connecting rod rotation.

The embodiment of the pipe bender of the present invention, embodiment 9, the pipe bender in this embodiment is different from embodiment 1 of the pipe bender described above only in that: the pipe bending machine in the embodiment is an electric pipe bending machine, in the embodiment, a pipe bending wheel is fixed on a pipe bending wheel shaft, a driving motor for driving the pipe bending wheel shaft and the pipe bending wheel to rotate is arranged on a rack, a connecting rod is fixed on the pipe bending wheel shaft, a pipe bending ejection pressing piece for fixing one end of a pipe to be processed in a groove of the pipe bending wheel is arranged on the connecting rod, a stop block matched with the stop block of the pipe to be processed is arranged on the rack, and when the pipe is bent, one end, fixed on the pipe bending wheel, of the pipe to be processed gradually drives the pipe to be processed to wind on the pipe. In this embodiment, no connecting rod is required. In other embodiments, the bending form of the bending machine may be other types in the prior art, such as the bending form disclosed in the publication of the publication No. CN208592265U cited in the background, and in this case, it is not necessary to provide a spacer between the bending path and the bending pressing wheel.

The embodiment 10 of the pipe bender of the present invention is different from the embodiment 1 of the pipe bender only in that: the baffle is in threaded connection with the elbow shaft, and the baffle compresses tightly the wheel core through cooperating with the elbow shaft.

The embodiment 11 of the pipe bender of the present invention, the pipe bender in this embodiment is different from the embodiment 1 of the pipe bender only in that: in order to adjust the position of the bent pipe pinch roller, three threaded holes fixed with the pinch roller shaft are formed in the connecting rod, and different position fixing pinch roller shafts can be selected according to actual needs. The three threaded holes are positioned at the installation position of the bent pipe pinch roller. In other embodiments, the number of threaded holes can be adjusted according to actual needs; certainly, a through hole can also be adopted, the pinch roller shaft is fixed through a nut and a step arranged on the pinch roller shaft, and the through hole can be a long hole so as to facilitate fine adjustment of the position of the bent pipe pinch roller.

The embodiment 12 of the pipe bender of the present invention is different from the embodiment 1 of the pipe bender only in that: the wheel core set in this embodiment is provided with three sets. In other embodiments, the sets of wheel lobes may be arranged in four sets, five sets, etc. In other embodiments, the core segment set may be comprised of three or more core segments.

The embodiment 13 of the bending machine of the present invention, the bending machine in this embodiment is different from the embodiment 1 of the bending machine only in that: in this embodiment, baffle and wheel core clearance fit can set up the step on the return bend shaft this moment, fixes a position the baffle.

The embodiment 14 of the pipe bender of the present invention is different from the embodiment 1 of the pipe bender only in that: the wheel core is rotatably assembled on the wheel shaft of the elbow pipe, and the wheel core is suitable for the condition that the wheel core is of an integral structure.

The embodiment 15 of the pipe bender of the present invention, the pipe bender in this embodiment is different from the embodiment 1 of the pipe bender only in that: the wheel core sets set up three groups, and the central angle that three wheel core sets of group correspond is 120 degrees, and return bend wheel lockpin corresponds to this moment and sets up threely.

The embodiment 16 of the bending machine of the present invention, the bending machine in this embodiment is different from the embodiment 1 of the bending machine only in that: the wheel core is sleeved on the axle of the elbow pipe, the wheel core comprises two ring cores, each ring is arranged along the radial direction of the axle of the elbow pipe, the wheel core is formed by sleeving the ring cores together, and the lock pin of the elbow pipe is not needed to be arranged at the moment. In other embodiments, the ring cores can be any number of three and greater than three.

The embodiment 17 of the pipe bender of the present invention is different from the embodiment 1 of the pipe bender only in that: the wheel core is of an integral structure, and the wheel core is sleeved on the bent pipe wheel shaft in a sliding mode.

The embodiment 18 of the pipe bender of the present invention, the pipe bender in this embodiment is different from the embodiment 1 of the pipe bender only in that: only one guide block is arranged on the core segment. In other embodiments, the number of the guide blocks on one wheel core can be any number, such as two or more than four, according to actual needs. In other embodiments, the core segment and the matching surface of the baffle plate and the base plate can be provided with anti-slip structures such as anti-slip patterns, at this time, the guide block is not needed, and of course, when the friction force between the baffle plate and the core segment meets the requirement, the anti-slip structures can be omitted.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. The bending machine includes:

a frame;

it is characterized in that the preparation method is characterized in that,

the pipe bending wheel comprises a wheel core, a baffle plate and a base plate;

2. The bender according to claim 1, wherein the stop is press-fit with the core.

3. The pipe bender according to claim 2, wherein the wheel core is a split structure, the wheel core comprises at least two wheel core segments with different radiuses, each wheel core segment is arranged along the circumferential direction of the bending wheel axle, and the wheel core is formed by the wheel core segments after being matched; or the wheel core comprises at least two ring cores, each ring is arranged along the radial direction of the wheel axle of the elbow pipe, and the wheel core is formed by sleeving the ring cores together.

4. The bending machine according to claim 2, wherein the wheel core is a split structure, the wheel core includes at least two wheel core lobe sets, each wheel core lobe set is arranged along a circumferential direction of the bending wheel shaft, the wheel core is formed by the wheel core lobe sets after being combined, and the wheel core lobe set is composed of at least two wheel core lobes arranged along a radial direction of the bending wheel.

5. The bender according to claim 3 or 4, wherein two or three wheel lobes are provided, and the central angles of the wheel lobes are equal.

6. The bending machine according to claim 3 or 4, wherein the core segment is provided with a guide block, the baffle plate and/or the backing plate is provided with a guide groove, and the guide block is in guide sliding fit with the guide groove along the radial direction of the bending wheel axle.

7. The bending machine according to any one of claims 1 to 4, wherein the frame is rotatably provided with a connecting rod, the connecting rod is disposed on one axial side of the bending wheel, the pad is disposed between the wheel core and the connecting rod, the rotation axis of the connecting rod coincides with the axis of the bending wheel axle, the bending press is a bending press wheel disposed on the connecting rod, and the bending press wheel is rotatably disposed on the connecting rod.

8. The bending machine according to claim 7, wherein the connecting rod is provided with a driving motor, the frame is rotatably assembled with a fluted disc, an axis of the fluted disc coincides with an axis of rotation of the connecting rod, and the driving motor is in driving engagement with the fluted disc to drive the connecting rod to rotate.

9. The bender according to claim 7, further comprising a connecting rod lock and a bending wheel lock;

the connecting rod is provided with a driving motor, the elbow pipe wheel shaft is rotatably assembled on the rack, the elbow pipe wheel is fixed on the elbow pipe wheel shaft, a fluted disc is fixed on the elbow pipe wheel shaft, the driving motor is in transmission fit with the fluted disc, the driving motor drives the connecting rod to rotate when the elbow pipe wheel is in rotation-stopping fit with the rack, and the driving motor drives the elbow pipe wheel to rotate when the connecting rod is in rotation-stopping fit with the rack.

10. The bending machine of claim 7, further comprising a spacer block for spacing between the bending wheel and the bending pinch roller, the spacer block having a spacer block molding surface for closely fitting the pipe to be machined toward the groove opening of the bending wheel and a pinch roller mating surface for closely fitting the bending pinch roller, the spacer block molding surface being disposed opposite the pinch roller mating surface.