CN110000256B

CN110000256B - Multipurpose pipe bender

Info

Publication number: CN110000256B
Application number: CN201910297741.3A
Authority: CN
Inventors: 黄建滨
Original assignee: Guangdong Chittak Intelligent Equipment Co ltd
Current assignee: Guangdong Chittak Intelligent Equipment Co ltd
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2024-04-26
Anticipated expiration: 2039-04-15
Also published as: CN110000256A

Abstract

The invention relates to a multipurpose pipe bender, in particular to a pipe bender capable of adjusting the horizontal position and the vertical position of a machine head body, which comprises a main machine body and the machine head body, wherein the machine head body comprises a machine head frame, a pipe bender arranged on the machine head frame and a machine head driving mechanism capable of driving the pipe bender to bend, and the main machine body comprises a main frame and a feeding device arranged on the main frame, and the feeding device is used for conveying pipe materials to be bent to the pipe bender; the main frame is characterized by comprising a main frame vertical side wall and a horizontal extension underframe which extends from the bottom of the main frame to the outer side of the main frame vertical side wall, wherein the main frame vertical side wall and the horizontal extension underframe are combined into a substantially L-shaped structure; the pipe bender head can be kept at the adjusted correct position for a relatively long time, and the stability of the horizontal position adjusting effect of the pipe bender head is greatly improved.

Description

Multipurpose pipe bender

Technical Field

The invention relates to a pipe bender with multiple purposes, in particular to a pipe bender capable of adjusting the horizontal position and the vertical position of a machine head body.

Background

Common pipe bending machines generally comprise a machine head and a main machine body, wherein a fixed arm, a pipe bending arm capable of rotating around a main shaft and a pipe bending driving device capable of driving the pipe bending arm to act are arranged on the machine head. The fixed arm is provided with a static mold unit, the static mold unit comprises a pair of static mold clamping blocks capable of opening and closing, and the fixed arm is also provided with a static mold driving device capable of driving the pair of static mold clamping blocks to open and close. The pipe bending arm is provided with a movable die unit, the movable die unit comprises a pair of movable die clamping blocks capable of opening and closing, and the pipe bending arm is also provided with a movable die driving device capable of driving the pair of movable die clamping blocks to open and close. And clamping cavities capable of clamping the pipe are respectively arranged on the pair of static die clamping blocks and the pair of movable die clamping blocks. The pipe bending machine is also provided with a feeding device for conveying the pipe into the clamping cavity. In order to allow the pipe to enter the clamping cavity accurately under the driving of the feeding device, the central axis of the clamping cavity needs to be overlapped with the central axis of the pipe placed on the feeding device. However, since the pipe to be processed often has various dimensions, the position of the clamping cavity needs to be adjusted in order to adapt to the pipe with different dimensions.

Aiming at the technical problems, an upper die changing device and a lower die changing device of a pipe bending machine are disclosed in Chinese patent No. 201310442225.8, the pipe bending machine comprises a machine head, a machine frame, a pipe bending fixed die and a pipe bending movable die which are arranged on the machine head, the machine head is vertically arranged on the machine frame in a lifting manner through the upper die changing device and the lower die changing device, and the upper die changing device and the lower die changing device comprise a horizontally arranged guide rail, a jacking block which is slidably arranged on the guide rail and a horizontal driving device which drives the jacking block to horizontally slide. The lifting block is provided with an inclined plane, and the machine head is propped against the inclined plane of the lifting block through the lifting slide block. When the horizontal driving device drives the jacking block to slide on the guide rail, the inclined surface of the jacking block drives the machine head to lift up and down through the lifting sliding block. As to how to adjust the horizontal position of the handpiece, this patent does not disclose.

Disclosure of Invention

The upper and lower die changing devices in CN201310442225.8 are position adjusting devices for adjusting the positions of the machine heads, and can adjust the positions of the central axes of the clamping cavities of the movable die unit and the static die unit on the machine heads to overlap with the central axis of the pipe placed on the feeding device, but this structure does not consider the unique structural characteristics of the machine heads. The machine head of the cutting machine commonly used in the market is hung on the main machine body, namely, the outer end of the machine head far away from the main machine body is suspended and does not have any support. The machine head is provided with the functional modules such as the fixed arm, the bent pipe driving device and the like, so that the weight is very large. The outer side end of the machine head slowly falls down and deforms due to accumulation of the sun and the moon, so that the central axis position of the clamping cavity which is adjusted by the position adjusting device is offset, the adjustment can only be carried out again by the adjusting device, and the adjusting effect is invalid again after a period of time. Moreover, in the case of severe deformation of the head, the problem cannot be solved simply by the above-mentioned position adjustment solution. Therefore, how to improve the stability of the position adjustment effect of the clamping cavity on the machine head is a technical problem that needs to be further solved at present.

Aiming at the defects of the prior art, the invention provides a multipurpose pipe bender, which comprises a main machine body and a machine head body, wherein the machine head body comprises a machine head frame, a pipe bender arranged on the machine head frame and a machine head driving mechanism capable of driving the pipe bender to bend, the main machine body comprises a main frame and a feeding device arranged on the main frame, and the feeding device is used for conveying pipe materials to be bent to the pipe bender; the main frame comprises a main frame upright side wall and a horizontal extension underframe which extends from the bottom of the main frame to the outer side of the main frame upright side wall, wherein the main frame upright side wall and the horizontal extension underframe are combined into a substantially L-shaped structure; the handpiece body further comprises a frame arranged in a space defined by the L-shaped configuration, the handpiece frame being mounted on the frame; the frame comprises a first vertical side wall surface and a bottom wall surface, a first horizontal guide rail pair arranged along the horizontal direction is arranged between the first vertical side wall surface of the frame and the vertical side wall surface of the main frame of the vertical side wall of the main frame, a second horizontal guide rail pair arranged along the horizontal direction is arranged between the bottom wall surface of the frame and the upper wall surface of the horizontal extension underframe, the first horizontal guide rail pair and the second horizontal guide rail pair are arranged in parallel, the frame can horizontally move on the main frame by means of the first horizontal guide rail pair and the second horizontal guide rail pair so as to adjust the position of the pipe bending machine head in the horizontal direction, and the first horizontal guide rail pair and the second horizontal guide rail pair have a spacing interval in the horizontal direction when seen from the vertical direction.

The pipe bending machine head is provided with a clamping cavity for clamping the pipe material, and bending and shaping of the pipe material can be completed through pipe bending action.

The vertical side wall of the main frame and the horizontal extension underframe can be connected into a whole by direct contact, or can be arranged at intervals.

Wherein the frame is disposed in a space defined by the L-shaped configuration, the feature defining a positional relationship between the frame and the main frame upright side walls, the horizontally extending chassis, the frame may be disposed in whole or only in part in the space defined by the L-shaped configuration. Thus, the horizontally extending underframe can support the frame, and then can share part of the weight of the machine head body.

The first horizontal guide rail pair comprises a pair of structural bodies capable of sliding relatively, for example, a linear guide rail and a sliding seat which are arranged on the linear guide rail in a sliding manner, and the linear guide rail and the sliding seat are respectively arranged on a first vertical side wall surface of the frame and a vertical side wall surface of the main frame; or a sliding groove formed directly on the first vertical side wall surface of the frame and a sliding block arranged on the vertical side wall surface of the main frame and extending into the sliding groove. In addition, the first horizontal guide rail pair is not only arranged in the horizontal direction but also arranged in the transverse direction as the main frame upright side wall. The transverse direction is a direction perpendicular to the conveying direction of the pipe material to be bent conveyed by the feeding device.

The second horizontal guide rail pair comprises a pair of structural bodies capable of sliding relatively, for example, a linear guide rail and a sliding seat which are arranged on the linear guide rail in a sliding manner, and the linear guide rail and the sliding seat are respectively arranged on the bottom wall surface of the frame and the upper wall surface of the horizontal extension underframe; or a sliding groove directly formed on the bottom wall surface of the frame and a sliding block which is arranged on the upper wall surface of the horizontally extending chassis and extends into the sliding groove. In addition, the second horizontal guide rail pair is arranged in parallel with the first horizontal guide rail pair, so the second horizontal guide rail pair is also arranged in the lateral direction.

The first horizontal guide rail pair and the second horizontal guide rail pair have a spacing distance in the horizontal direction when seen from the vertical direction. The feature defines a positional relationship between the first horizontal guide rail pair and the second horizontal guide rail pair in a horizontal direction, and when the second horizontal guide rail pair is provided with a plurality of second horizontal guide rails, all or one of the second horizontal guide rails may have a spacing from the first horizontal guide rail pair in the horizontal direction. According to the scheme, the second horizontal guide rail pair is enabled to be close to the gravity center position of the machine head body as much as possible, so that the machine head body can be supported as much as possible and part of the weight of the machine head body can be borne.

According to the technical scheme, compared with the prior art, the invention has the beneficial technical effects that: because the main frame vertical side wall and the horizontal extension underframe are combined into a substantially L-shaped structure, the main frame vertical side wall and the horizontal extension underframe can respectively provide positioning references for the first horizontal guide rail pair and the second horizontal guide rail pair from the vertical direction and the horizontal direction, and can provide layout spaces for the first horizontal guide rail pair and the second horizontal guide rail pair which are arranged at intervals in the horizontal direction, and further can provide two horizontal sliding supports for the frame which are arranged at intervals in the horizontal direction through the first horizontal guide rail pair and the second horizontal guide rail pair, so that shaking of the machine head body in the horizontal movement process is reduced, the horizontal sliding stability of the machine head body is improved, and stable positioning support can be provided for the machine head body after the machine head body completes horizontal position adjustment. Secondly, still can be through the horizontal extension chassis bearing the frame reduces the unsettled degree of aircraft nose body, offset the partial weight of aircraft nose body reduces the degree of aircraft nose body whereabouts deformation, and then make through the horizontal migration adjustment of frame after the pipe bending machine head is in the position on the horizontal direction, the pipe bending machine head can keep in the exact position after the adjustment for a relatively long time, has improved greatly the stability of pipe bending machine head's horizontal position adjustment effect.

In order to automatically adjust the horizontal position of the machine head body, a further technical scheme may be that a first horizontal movement driving mechanism is further arranged between the frame and the main frame, and the first horizontal movement driving mechanism is used for driving the frame to move on the main frame in the horizontal direction. Wherein the driving mechanism can be a motor, a cylinder or the like which can provide kinetic energy for the frame.

A further technical solution may be that a first locking device is further provided between the frame and the main frame, the first locking device being configured to allow the frame and the main frame to be relatively fixed and not movable when the position of the frame on the main frame is not adjusted. Wherein the first locking means may take a variety of structural forms, for example, may be set screws which pass through the frame to lock the frame to the main frame; or a stopper capable of defining the horizontal position of the frame from the horizontal direction.

In order to adjust the position of the head frame in the erection direction, a further technical solution may be adopted, wherein the frame further includes a pair of frame second erection walls, the head frame is further provided with a head frame erection wall adapted to the frame second erection walls, the pair of frame second erection walls are arranged in correspondence with the pair of head frame erection walls and a pair of erection rail pairs arranged in parallel in the erection direction are mounted therebetween, the head frame is capable of vertically moving on the frame by means of the pair of erection rail pairs to adjust the position in the erection direction, and the pair of erection rail pairs and the first horizontal rail pair have a spacing distance in the horizontal direction as viewed in the erection direction.

The second vertical wall surfaces of the pair of frames have various structures and layout modes, for example, the second vertical wall surfaces can be a pair of wall surfaces which are arranged along the conveying direction of the pipe materials to be bent and are oppositely arranged, or can be an upper step surface and a lower step surface in a step-shaped surface group which are transversely arranged, or can be a pair of wall surfaces which are transversely arranged side by side.

The above features define that structural elements such as a structure and a layout of the frame second standing wall surface are arranged in a manner of adapting to the frame second standing wall surface, for example, when a pair of frame second standing wall surfaces are a pair of wall surfaces arranged side by side in the transverse direction, a pair of frame standing wall surfaces are also a pair of wall surfaces arranged side by side in the transverse direction.

The vertical guide rail pair comprises a pair of structural bodies capable of sliding relatively, for example, a linear guide rail and a sliding seat which are arranged on the linear guide rail in a sliding manner, and the linear guide rail and the sliding seat are respectively arranged on the second vertical wall surface of the frame and the vertical wall surface of the machine head frame; or a sliding groove directly formed on the second vertical wall surface of the frame and a sliding block arranged on the vertical wall surface of the machine head frame and extending into the sliding groove.

Further, the pair of upright rail pairs may be disposed near the center of gravity of the head frame. Wherein the center of gravity position of the head frame is the center of gravity position of the head frame and the total weight of all functional modules arranged on the head frame, such as the pipe bending machine head, a head driving mechanism and the like. In this embodiment, the arrangement positions of the pair of vertical guide rail pairs may be defined to overlap with the center of gravity position of the head frame with a small gap. Thus, when the headstock slides in the vertical direction, the headstock can be kept in a horizontal state as much as possible by utilizing the weight of the headstock, which is not only beneficial to improving the stability of vertical sliding, but also can be kept in a horizontal state for a relatively long time after the headstock completes the vertical position adjusting operation, thereby reducing the degree of falling deformation of the headstock under the action of gravity and further being beneficial to improving the stability of the vertical position adjusting effect of the pipe bending machine head

As for the structure of the frame, further technical solution may be that, when seen from the vertical direction, the frame includes a U-shaped wall body having a U shape, and a part of the head frame extends into a U-shaped cavity defined by the U-shaped wall surface of the frame, but the elbow head is located outside the U-shaped cavity. Therefore, by means of the space provided by the U-shaped cavity, the gravity center position of the machine head frame can further move forwards towards the direction of the vertical side wall of the main frame, so that the weight of the machine head frame can be further borne on the second horizontal guide rail pair and the horizontally extending underframe through the frame, the suspension degree of the machine head body is further reduced, the falling deformation degree of the machine head frame under the action of gravity is reduced, and the stability of the position adjusting effect of the pipe bending machine head is improved.

Further technical scheme may be that the U-shaped wall body includes a left side wall body, a right side wall body and a transverse wall body arranged between the left side wall surface and the right side wall surface, an outer side surface of the transverse wall body forms a first vertical side wall surface of the frame so as to be close to the vertical side wall surface of the main frame, and a pair of second vertical side wall surfaces of the frame are respectively arranged on the left side wall body and the right side wall body of the frame.

Further, the second vertical wall surfaces of the pair of frames may be respectively disposed on the end surfaces of the left and right side wall bodies of the frames.

Further technical scheme may be that the bottom wall surface of the U-shaped wall body forms the bottom wall surface of the frame.

In order to drive the machine head frame to vertically lift and move, a bottom plate is further arranged on the frame, guide seats are slidably arranged on the bottom plate, and a gap is reserved between the guide seats and a pair of vertical guide rail pairs in the horizontal direction when seen from the vertical direction; the guide seat is further provided with an inclined hole, the head frame is further provided with a guide column inserted into the inclined hole, the guide seat is not only used for being matched with the guide column through the inclined hole, but also used for being matched with a pair of vertical guide rail pairs to cooperatively stabilize the head frame, and the head frame can be pushed to move vertically along the frame when the guide seat moves horizontally. Thus, when the guide seat slides, the inclined hole on the guide seat will guide the guide column to move in the vertical direction along the inclined direction of the inclined hole so as to push the machine head frame to move vertically along the frame. In addition, the guide seat can also provide a supporting point for the machine head frame in the horizontal direction through the matching of the inclined holes and the guide columns, so that the machine head frame is cooperated and stabilized with a pair of vertical guide rail pairs, the stability of the machine head frame when the machine head frame moves vertically along the frame is improved, and the falling deformation of the machine head frame is reduced.

The further technical scheme may be that a second horizontal movement driving mechanism is further arranged between the frame and the guide seat, and the second horizontal movement driving mechanism is used for driving the guide seat to move along the horizontal direction of the frame.

The further technical scheme may be that a second locking device is further arranged between the frame and the frame, and the second locking device is used for enabling the frame and the frame to be relatively fixed and not movable when the position of the frame on the frame is not adjusted. Wherein the second locking device can adopt various structural modes, for example, can be a positioning screw which penetrates through the frame to lock the frame on the headstock; or a stopper capable of defining the height position of the frame from the standing direction.

Because of the above characteristics and advantages, the invention can be applied to a multipurpose pipe bender.

Drawings

FIG. 1 is a schematic perspective view of a multipurpose bending machine according to the technical scheme of the present invention;

Fig. 2 is a schematic perspective view of the main body 100;

fig. 3 is a schematic perspective view of the frame 6;

FIG. 4 is a schematic perspective view of the U-shaped wall;

FIG. 5 is a schematic cross-sectional view of the structure in the direction A-A of FIG. 4;

FIG. 6 is a schematic diagram of the side view of the frame 4 and the tube bender 5;

fig. 7 is a schematic perspective view of the auxiliary positioning frame 42;

fig. 8 is a schematic layout view of the guide base 8, the vertical rail pairs (7, 7 a), the first horizontal rail pair 31, and the second horizontal rail pair 32 in the horizontal direction, as viewed from the vertical direction (the direction indicated by the arrow T in fig. 2).

Detailed Description

The structure of the multipurpose pipe bending machine applying the technical scheme of the invention is further described below with reference to the accompanying drawings.

Referring to fig. 1,2 and 3, the multipurpose pipe bender includes a main body 100 and a machine head body 400, the machine head body 400 includes a machine head frame 4, a pipe bender 5 disposed on the machine head frame 4, and a machine head driving mechanism (not shown in the drawings) capable of driving the pipe bender 5 to bend, the main body 100 includes a main frame 1 and a feeding device 2 disposed on the main frame 1, and the feeding device 2 is used for conveying a pipe material to be bent to the pipe bender 5. The main frame 1 includes a main frame upright side wall 11 arranged in a lateral direction and a horizontally extending bottom frame 12 extending from a bottom of the main frame 1 to an outside of the main frame upright side wall 11, the main frame upright side wall 11 and the horizontally extending bottom frame 12 being combined into a substantially L-shaped configuration; the handpiece 400 further includes a frame 6, the frame 6 being disposed in a space defined by the L-shaped configuration, the handpiece 4 being mounted on the frame 6. The frame 6 includes a frame first standing side wall surface 610 and a frame bottom wall surface 640, a first horizontal rail pair 31 arranged in a horizontal direction is installed between the frame first standing side wall surface 610 of the frame 6 and a main frame standing side wall surface 110 of the main frame standing side wall 11, a second horizontal rail pair (32, 32 a) arranged in a horizontal direction is installed between the frame bottom wall surface 640 and an upper wall surface 120 of the horizontally extending chassis 12, the first and second horizontal rail pairs 31, 32a are arranged in parallel, the frame 6 is horizontally movable on the main frame 1 by means of the first and second horizontal rail pairs 31, 32a so that the position of the pipe bender head 5 in the horizontal direction can be adjusted, and the first and second horizontal rail pairs 31, 32a have a spacing distance in the horizontal direction as viewed from the standing direction.

The above technical scheme is further described in detail below with reference to the accompanying drawings. As shown in fig. 2, 3, 4, 5 and 8, the frame 6 includes a U-shaped wall body having a U-shape when viewed in the vertical direction, the U-shaped wall body includes a lateral wall body 61 having left and right side wall bodies (62, 63) arranged between the left and right side wall bodies (62, 63), and an outer side surface of the lateral wall body 61 constitutes the frame first erected side wall surface 610 so as to be adjacent to the main frame erected side wall surface 110. The U-shaped wall body further comprises a bottom plate body 64, and the bottom wall surface of the bottom plate body 64 forms the bottom wall surface 640 of the frame. The frame 6 is integrally arranged in the space defined by the L-shaped configuration, although it is of course possible in other embodiments that part of the frame 6 is arranged in the space defined by the L-shaped configuration. A first horizontal rail pair 31 arranged in the horizontal direction is installed between the frame first vertical side wall surface 610 and the main frame vertical side wall surface 110, the first horizontal rail pair 31 includes a linear rail 311 and a slide carriage 312 slidably provided on the linear rail 311, the linear rail 311 is installed on the main frame vertical side wall surface 110, and the slide carriage 312 is installed on the frame first vertical side wall surface 610. A pair of second horizontal rail pairs (32, 32 a) arranged in the horizontal direction are mounted between the frame bottom wall surface 640 and the upper wall surface 120 of the horizontally extending chassis 12, and the first horizontal rail pair 31 and the second horizontal rail pair (32, 32 a) are arranged in parallel. The second horizontal rail pair (32, 32 a) has a similar structure to the first horizontal rail pair 31, and a discussion thereof will not be repeated here. The first and second horizontal rail pairs 31 and 32a have a spacing L1 in the horizontal direction as viewed in the vertical direction (in the direction indicated by arrow T in fig. 2). In this way, the second horizontal guide rail pair (32, 32 a) is made to be as close to the center of gravity of the head body 400 as possible, so that the head body 400 can be supported as much as possible and part of the weight of the head body 400 can be shared.

As shown in fig. 2, a first horizontal movement driving mechanism 9 is further provided between the frame 6 and the main frame 1, and the first horizontal movement driving mechanism 9 is used for driving the frame 6 to move on the main frame 1 in the horizontal direction. Specifically, the first horizontal movement driving mechanism 9 is disposed on the horizontally extending chassis 12, the first horizontal movement driving mechanism 9 includes a driving motor 91, a driving screw 92 drivingly connected to an output shaft of the driving motor 91, and a driving nut 93 slidably disposed on the driving screw 92, and the bottom plate 64 of the frame 6 is locked on the driving nut 93. Thus, when the first horizontal movement driving mechanism 9 acts to drive the frame 6 to move horizontally on the main frame 1 by means of the first horizontal guide rail pair 31 and the second horizontal guide rail pair (32, 32 a), the head frame 4 and the pipe bender 5 thereon are driven to move horizontally together, and finally the position of the pipe bender 5 in the horizontal direction is adjusted. Further, first locking means are provided between the frame 6 and the main frame 1 for relatively immovable fixation between the frame 6 and the main frame 1 when the position of the frame 6 on the main frame 1 is not adjusted. Wherein the first locking means may take various structural forms, for example, may be set screws which penetrate the frame 6 to lock the frame 6 to the main frame 1; or a stopper which can define the horizontal position of the frame 6 from the horizontal direction.

According to the above technical solution, since the main frame upright sidewall 11 and the horizontally extending chassis 12 are combined into a substantially L-shaped structure, the main frame upright sidewall 11 and the horizontally extending chassis 12 can respectively provide positioning references for the first horizontal rail pair 31 and the second horizontal rail pair (32, 32 a) from the upright direction and the horizontal direction, and provide layout spaces for the first horizontal rail pair 31 and the second horizontal rail pair (32, 32 a) to be arranged at intervals in the horizontal direction, and further can provide two horizontal sliding supports for the frame 6 to be arranged at intervals in the horizontal direction through the first horizontal rail pair 31 and the second horizontal rail pair (32, 32 a), so that the horizontal sliding stability of the machine head body 400 is improved, and stable positioning support can be provided for the machine head body 400 after the machine head body completes horizontal position adjustment. Secondly, the frame 6 can be supported by the horizontally extending underframe 12, the suspension degree of the machine head body 400 is reduced, part of the weight of the machine head body 400 is counteracted, the degree of falling deformation of the machine head body 400 is reduced, and further after the position of the pipe bending machine head 5 in the horizontal direction is adjusted through the horizontal movement of the frame 6, the pipe bending machine head 5 can be kept at the adjusted correct position for a relatively long time, and the stability of the horizontal position adjusting effect of the pipe bending machine head 5 is greatly improved.

As shown in fig. 6 and 7, the head frame 4 includes a main frame 41 and an auxiliary positioning frame 42, the auxiliary positioning frame 42 includes an erecting auxiliary plate 421 and an auxiliary support 422, the auxiliary support 422 is substantially L-shaped so as to have a horizontally arranged horizontal support table 4221, and the erecting auxiliary plate 421 and the auxiliary support 422 are connected together by a fastener. The erection auxiliary plate 421 is provided with an avoidance window 4211, and the rear end of the main frame 41 passes through the avoidance window 4211 and is supported on a horizontal support table 4221 of the auxiliary support 422. The rear ends of the horizontal support table 4221 and the main frame 41 extend into a U-shaped cavity 60 defined by the U-shaped wall of the frame 6 but the tube bender head 5 is located outside the U-shaped cavity 60. Thus, by means of the space provided by the U-shaped cavity 60, the center position of the head frame 4 can further move forward in the directions of the second horizontal guide rail pairs (32, 32 a) and the horizontally extending underframe 12, so that the weight of the head frame 4 can be further borne on the second horizontal guide rail pairs (32, 32 a) and the horizontally extending underframe 12 through the frame 6, the suspension degree of the head frame 4 is further reduced, and the degree of falling deformation of the head frame 4 under the action of gravity is reduced.

As shown in fig. 3, 6 and 8, in order to enable adjustment of the position of the head rest 4 in the standing direction, the frame 6 further includes a pair of frame second standing wall surfaces (621, 631), and the pair of frame second standing wall surfaces (621, 631) are provided on end surfaces of left and right side wall bodies (62, 63) of the frame 6, respectively. The head frame 4 is further provided with a head frame standing wall surface (4210, 4210 a) adapted to the frame second standing wall surface (621, 631), and the head frame standing wall surface (4210, 4210 a) is provided on the standing auxiliary plate 421. A pair of the frame second standing wall surfaces (621, 631) are arranged corresponding to a pair of the head rest standing wall surfaces (4210, 4210 a) and a pair of standing rail pairs (7, 7 a) arranged in parallel in the standing direction are installed therebetween, and the structure of the standing rail pairs (7, 7 a) is similar to that of the first horizontal rail pair 31 and will not be repeated here. The head rest 4 is vertically movable on the frame 6 by means of a pair of vertical rail pairs (7, 7 a) so as to adjust the position in the vertical direction, the pair of vertical rail pairs (7, 7 a) having a spacing L2 in the horizontal direction from the first horizontal rail pair 31 as seen in the vertical direction. Further, a pair of the pair of upright rail pairs (7, 7 a) is disposed near the center of gravity position a of the head frame 4. The center of gravity position a of the head frame 4 is the center of gravity position of the head frame 4 and all functional modules provided on the head frame 4, for example, the total weight of the tube bending head 5. When the frame 4 slides in the vertical direction, the weight of the frame can be kept in a horizontal state as much as possible, which is not only beneficial to improving the stability of vertical sliding, but also can be kept in a horizontal state for a relatively long time after the frame 4 completes the adjustment operation of the vertical position, so that the degree of falling deformation of the frame 4 under the action of gravity is reduced, and the stability of the adjustment effect of the vertical position of the pipe bending machine head 5 is further improved. Of course, in other embodiments, a pair of the frame second standing wall surfaces (621, 631) may be provided on other wall bodies of the frame 6, for example, a pair of the side surfaces of the left and right side wall bodies of the frame 6, or the lateral wall body 61, respectively. The frame standing wall surfaces (4210, 4210 a) may be provided on other wall bodies of the frame 4, for example, on the inner end surface of the main frame 41.

As shown in fig. 3, 6, 7 and 8, a bottom plate 65 is further provided on the frame 6, a guide seat 8 is slidably provided on the bottom plate 65, and a gap L3 is provided between the guide seat 8 and the pair of upright rail pairs (7, 7 a) in the horizontal direction as seen in the upright direction. The guide seat 8 is further provided with an inclined hole 81, the head frame 4 is further provided with a guide post 4212 inserted into the inclined hole 81, and the guide post 4212 is disposed on the standing auxiliary plate 421. A second horizontal movement driving mechanism 83 is further arranged between the frame 6 and the guide seat 8, the second horizontal movement driving mechanism 83 is arranged on the bottom plate 65, and an output end of the second horizontal movement driving mechanism 83 is connected to the guide seat 8. The second horizontal movement driving mechanism 83 is configured to drive the guide seat 8 to move in the horizontal direction on the frame 6. Thus, when the guide base 8 slides, the inclined hole 81 in the guide base 8 will guide the guide post 4212 to move in a vertical direction along the inclined direction of the inclined hole 81 to push the head frame 4 to move vertically along the frame. In addition, the guide seat 8 can also provide a supporting point for the head frame 4 in the horizontal direction through the cooperation of the inclined hole 81 and the guide post 4212, and cooperate with a pair of vertical guide rail pairs (7, 7 a) to stabilize the head frame 4, thereby improving the stability of the head frame 4 when moving vertically along the frame 6, and also being beneficial to reducing the falling deformation of the head frame 4. It can be seen that the guide seat 8 is not only used to cooperate with the guide posts 4212 through the inclined holes 81, but also used to cooperate with a pair of vertical guide rail pairs (7, 7 a) to stabilize the head frame 4, so that the head frame 4 can be pushed to move vertically along the frame 6 when the guide seat 8 moves horizontally.

Further, a second locking device (not shown) is provided between the frame 6 and the frame 4, and the second locking device is used for making the frame 4 and the frame 6 relatively immovable when the position of the frame 4 on the frame 6 is not adjusted. Wherein the second locking means may take various structural forms, for example, may be a set screw which passes through the frame 6 to lock the frame 6 to the head frame 4; or a stopper which can limit the height position of the frame 6 from the standing direction.

Claims

1. The multipurpose pipe bender comprises a main machine body and a machine head body, wherein the machine head body comprises a machine head frame, a pipe bender arranged on the machine head frame and a machine head driving mechanism capable of driving the pipe bender to bend, the main machine body comprises a main frame and a feeding device arranged on the main frame, and the feeding device is used for conveying pipe materials to be bent to the pipe bender; the main frame comprises a main frame upright side wall and a horizontal extension underframe which extends from the bottom of the main frame to the outer side of the main frame upright side wall, wherein the main frame upright side wall and the horizontal extension underframe are combined into a substantially L-shaped structure; the handpiece body further comprises a frame arranged in a space defined by the L-shaped configuration, the handpiece frame being mounted on the frame; the frame comprises a first vertical side wall surface and a bottom wall surface, a first horizontal guide rail pair arranged along the horizontal direction is arranged between the first vertical side wall surface of the frame and the vertical side wall surface of the main frame of the vertical side wall of the main frame, a second horizontal guide rail pair arranged along the horizontal direction is arranged between the bottom wall surface of the frame and the upper wall surface of the horizontal extension underframe, the first horizontal guide rail pair and the second horizontal guide rail pair are arranged in parallel, the frame can horizontally move on the main frame by means of the first horizontal guide rail pair and the second horizontal guide rail pair so as to adjust the position of the pipe bending machine head in the horizontal direction, and the first horizontal guide rail pair and the second horizontal guide rail pair have a spacing interval in the horizontal direction when seen from the vertical direction.

2. The multi-purpose tube bending machine of claim 1, wherein a first horizontal movement drive mechanism is further provided between the frame and the main frame, the first horizontal movement drive mechanism being for driving the frame to move in a horizontal direction on the main frame.

3. A multi-purpose tube bending machine according to claim 1, wherein first locking means are also provided between the frame and the main frame for rendering the frame and the main frame relatively immovable without adjusting the position of the frame on the main frame.

4. A multipurpose bending machine as claimed in claim 1, 2 or 3, wherein the frame further includes a pair of frame second erected wall surfaces, a head frame erected wall surface adapted to the frame second erected wall surfaces is further provided on the head frame, the pair of frame second erected wall surfaces is arranged in correspondence with the pair of head frame erected wall surfaces with a pair of erected rail pairs arranged in parallel in an erected direction therebetween, the head frame is vertically movable on the frame by means of the pair of erected rail pairs to adjust a position in the erected cube, and the pair of erected rail pairs is spaced apart from the first horizontal rail pair in a horizontal direction as viewed in the erected direction.

5. The multi-purpose tube bending machine of claim 4, wherein a pair of said pair of upstanding guide rails are disposed proximate to a center of gravity of said headstock.

6. The multi-purpose bender according to claim 4, wherein the frame includes a U-shaped wall when viewed in a vertical direction, a portion of the frame extending into a U-shaped cavity defined by the U-shaped wall of the frame but the bender is located outside the U-shaped cavity.

7. The multi-purpose tube bending machine of claim 6, wherein the U-shaped wall includes left and right side walls and a transverse wall disposed between the left and right side walls, the outer side of the transverse wall forming the first upright side wall of the frame so as to be adjacent to the upright side wall of the main frame, and a pair of second upright side walls of the frame being disposed on the left and right side walls of the frame, respectively.

8. The multi-purpose tube bending machine of claim 7, wherein a pair of said frame second upstanding wall surfaces are provided on the end surfaces of the left and right side wall bodies of said frame, respectively.

9. The multi-purpose tube bender according to claim 6, wherein the bottom wall of the U-shaped wall forms the bottom wall of the frame.

10. The multipurpose bending machine of claim 4, wherein a base plate is further provided on the frame, guide seats are slidably provided on the base plate, and a space is provided between the guide seats and the pair of upright guide rail pairs in a horizontal direction as viewed in an upright direction; the guide seat is further provided with an inclined hole, the head frame is further provided with a guide column inserted into the inclined hole, the guide seat is not only used for being matched with the guide column through the inclined hole, but also used for being matched with a pair of vertical guide rail pairs to cooperatively stabilize the head frame, and the head frame can be pushed to move vertically along the frame when the guide seat moves horizontally.

11. The multi-purpose tube bending machine of claim 10, wherein a second horizontal movement drive mechanism is further provided between the frame and the guide seat for driving the guide seat to move in a horizontal direction on the frame.

12. The multi-purpose bending machine of claim 4, wherein a second locking device is further provided between the frame and the frame for allowing the frame and the frame to be relatively immovable without adjusting the position of the frame on the frame.