CN209918615U - Pipe bender with abutting device - Google Patents
Pipe bender with abutting device Download PDFInfo
- Publication number
- CN209918615U CN209918615U CN201920501575.XU CN201920501575U CN209918615U CN 209918615 U CN209918615 U CN 209918615U CN 201920501575 U CN201920501575 U CN 201920501575U CN 209918615 U CN209918615 U CN 209918615U
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- rack
- adjusting bolt
- rod body
- head
- mounting seat
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- 238000005452 bending Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 description 25
- 230000000903 blocking effect Effects 0.000 description 9
- 101100328887 Caenorhabditis elegans col-34 gene Proteins 0.000 description 6
- 230000007774 longterm Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000003462 Bender reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The utility model relates to a pipe bender with a propping device, in particular to a pipe bender with a propping device, which is used for shaping a straight pipe into a bending shape, wherein the bending angle can be 45 degrees, 60 degrees or 90 degrees, and the like; the rack is characterized by further comprising a mounting seat arranged on the rack and a positioning frame arranged on the mounting seat, wherein the positioning frame comprises a rod body part and a headstock part, a jacking head is arranged on the headstock part and is used for jacking the head part of the rack to prevent the rack from being separated from the main shaft gear; an accommodating cavity is formed in the mounting seat, and the rod body part is inserted into the accommodating cavity; the invention aims to provide a completely different adjusting mechanism to optimize the top pressure stability of the top pressure device.
Description
Technical Field
The invention relates to a pipe bender, in particular to a pipe bender with a propping device. The pipe bender is used for shaping a straight pipe into a bent shape, and the bending angle can be 45 degrees, 60 degrees or 90 degrees.
Background
The traditional pipe bending operation is finished manually, and the processing efficiency and the processing precision of products are very poor. With the development of industry, pipe benders capable of automatically bending pipes appear in the industry. The pipe bending machine comprises a pipe bending arm capable of rotating around a main shaft, a pipe bending movable die unit arranged on the pipe bending arm and a driving device for driving the pipe bending arm to rotate. When the pipe bending device works, the driving device drives the main shaft to drive the pipe bending arm to rotate around the main shaft, and at the moment, the pipe bending movable die unit clamps one end of a pipe and enables the pipe to rotate relative to the other end of the pipe to be bent. In order to freely control the forward rotation and the reverse rotation of the main shaft, the driving device generally includes a gear provided on the main shaft, a rack engaged with the gear, and a rack driver for driving the rack to move forward and backward. The rack driver can drive the gear to rotate around the main shaft through the rack. In order to prevent the rack from disengaging from the gear, a biasing device is typically provided. For example, chinese utility model patent CN200420027261.4, 2004, 05, 18. This patent proposes keeping off of drive rack and leaning on device in bending machine, and its major structure is: the gear-type transmission mechanism comprises a headstock, a driving rack capable of moving in a telescopic mode, a gear in meshing transmission with the driving rack and a blocking shaft arranged in the headstock, wherein the blocking shaft is in contact with the outer side of the driving rack. Two adjusting cavities are arranged in the headstock and are respectively arranged at the head end and the tail end of the baffle shaft. A pair of adjusting inclined blocks is arranged in the adjusting cavity, and one adjusting inclined block is in contact with one shaft end of the blocking shaft. The adjusting mechanism is characterized in that a threaded hole is formed in the headstock corresponding to the adjusting cavity, an adjusting bolt is arranged in the threaded hole, and the adjusting bolt is in contact with an adjusting inclined block close to the blocking shaft. The baffle leaning device with the structure can adjust the gap between the driving rack and the gear in time according to actual conditions, ensure that the driving rack and the gear are reliably meshed, and ensure the normal operation of bending.
Disclosure of Invention
The analysis of the blocking and leaning device in the above patent CN200420027261.4 shows that the blocking and leaning device presses the head and tail end positions of the blocking shaft through the inclined block to adjust the position of the blocking block. The object of the invention is to provide a completely different adjusting mechanism for optimizing the pressing stability of the pressing device. The invention provides a pipe bender with a jacking device, which comprises a rack, a main shaft gear, a rack and a rack driving mechanism, wherein the main shaft is arranged on the rack; the rack is characterized by further comprising a mounting seat arranged on the rack and a positioning frame arranged on the mounting seat, wherein the positioning frame comprises a rod body part and a headstock part, a jacking head is arranged on the headstock part and is used for jacking the head part of the rack to prevent the rack from being separated from the spindle gear; an accommodating cavity is formed in the mounting seat, and the rod body part is inserted into the accommodating cavity; the first adjusting bolt is arranged along the axial direction of the rod body part and can extend into the accommodating cavity to push and drive the rod body part to move towards one side of the rack; the mounting seat is further provided with a second threaded hole and a second adjusting bolt, the second adjusting bolt is screwed on the second threaded hole and is arranged along the radial direction of the rod body, and the head of the second adjusting bolt extends into the accommodating cavity and can be pressed against the side edge of the rod body.
The mounting seat is used for positioning the positioning frame, and can be a seat body arranged in a split manner with the rack or can be integrally formed with the rack, but generally, the mounting seat is more convenient to process and manufacture by adopting a split structure.
Wherein the locating frame is a device which can be driven to carry the top pressure head to finely adjust the position relative to the mounting seat.
The first adjusting bolt is arranged along the axial direction of the rod body part, so that the first adjusting bolt can axially press the rod body part to axially position the rod body part. In addition, the first adjusting bolt can also drive the rod body part to move along the axial direction so as to finely adjust the position of the rod body part, and further finely adjust the position of the jacking head. In order to enable the first adjusting bolt to axially drive the rod body part, a connecting thread can be optionally arranged on the mounting seat, so that when the first adjusting bolt is screwed, the first adjusting bolt generates axial displacement to push the rod body part to move, or the rod body part is provided with the connecting thread, the first adjusting bolt is axially positioned, so that when the first adjusting bolt is screwed, the rod body part is driven to axially move back and forth through the thread transmission relationship between the first adjusting bolt and the connecting thread.
The second adjusting bolt is arranged along the radial direction of the rod body part, so that the second adjusting bolt and the first adjusting bolt are arranged in a mutually approximately perpendicular arrangement relationship, and the second adjusting bolt presses the rod body part from the radial direction, so that the vibration of the rod body part in the radial direction can be reduced through the pressing of the pressing head in the process of axially moving the rack back and forth. But also axial positioning of the shank portion with increased axial frictional resistance by the second adjusting bolt pressing against the shank portion.
According to the technical scheme, the invention has the beneficial technical effects that: because the mounting seat is provided with the first adjusting bolt arranged axially and the second adjusting bolt arranged radially, the first adjusting bolt and the second adjusting bolt can respectively and respectively abut against the rod body part along two different axial and radial directions to cooperatively enhance the axial positioning capability of the rod body part, prolong the effective duration of the abutting head in the correct abutting position after the position is adjusted, and improve the abutting stability of the abutting head on the rack. In addition, the second adjusting bolt can reduce the vibration of the rod body part in the radial direction through the jacking head in the process of moving the rack back and forth in the axial direction, and further improve the jacking stability of the jacking head on the rack.
The mounting seat comprises a seat main body and an auxiliary block detachably arranged on the seat main body, a first threaded hole is formed in the auxiliary block, and the first adjusting bolt is screwed in the first threaded hole in a threaded mode. The processing of first screw hole has been facilitated like this, works as moreover when first screw hole appears damaging after long-term the use, can directly change the auxiliary block can, do not need whole change the mount pad, greatly reduced cost of maintenance.
Further, according to a further aspect, an abutting flat surface portion may be provided at a position abutting against the head portion of the second adjusting bolt on the side portion of the rod body. In this way, the abutting engagement of the abutting flat portion with the head portion of the second adjusting bolt can reduce or prevent the lever body portion from rotating radially.
As for the integral structure between the top pressing head and the positioning frame, but a split structure is preferred for the convenience of replacing the top pressing head, a further technical scheme for this purpose may be that a groove is arranged on the head frame part, the top pressing head is detachably mounted on the groove, and at least part of the head wall body of the top pressing head extends out of the groove and abuts against the rack. In this way, the pressing head can be detached from the positioning frame by means of the notches provided in the grooves.
The jacking head can be statically arranged in the groove to form sliding friction with the rack, but the wear of the jacking head is accelerated in this way, and for the further technical scheme, the jacking head also comprises a positioning shaft, the positioning shaft penetrates through the upper wall body and the lower wall body of the groove and a central hole arranged in the jacking head to position the jacking head on the groove, the positioning shaft is positioned on the upper wall body and the lower wall body of the groove, and the jacking head can rotate on the positioning shaft. Therefore, the ejector head and the rack form rolling friction, and the abrasion of the ejector head can be reduced. In addition, the jacking head is mainly positioned in the groove through the positioning shaft, so that the positioning of the jacking head can be basically released after the positioning shaft is detached, and the jacking head can be detached from the groove conveniently.
In addition, the inventor also finds that the tail end of a rack of a pipe bender on the market at present and an output shaft of a rack driving mechanism for driving the rack to move are in hard connection, when the blocking and leaning device presses the rack to enable the rack to deflect towards the direction of the gear, the rack can bear certain radial torque, and after long-term use, the rack can be damaged due to fatigue. In view of this, the present invention further adopts a technical solution that the tail portion of the rack is deflectably disposed on the output shaft of the rack drive mechanism. Therefore, when the jacking head jacks the rack, the rack can deflect at a certain angle, the radial torque borne by the rack is reduced, and the service life of the rack is effectively prolonged.
Due to the characteristics and the advantages, the invention can be applied to pipe bending machines.
Drawings
Fig. 1 is a schematic perspective view of a pipe bender to which the present invention is applied;
FIG. 2 is an enlarged view of part A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of an assembly module of the mounting seat, the locating frame and the top ram;
fig. 4 is a schematic perspective view of the positioning frame.
Detailed Description
The structure of the pipe bender to which the technical scheme of the invention is applied is further described with reference to the attached drawings.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the present invention provides a pipe bender with a butting device, which includes a frame 1, a main shaft 11 mounted on the frame 1, a main shaft gear 13 disposed on the main shaft 11, a rack 14 engaged with the main shaft gear 13 for transmission, and a rack driving mechanism (not shown) capable of driving the rack 14 to move back and forth axially. The rear portion of the rack 14 is provided to be deflectable on the output shaft of the rack drive mechanism. In this way, when the pressing head 4, which will be discussed below, presses the rack 14, the rack 14 can deflect a certain angle, so as to reduce the radial torque borne by the rack 14, and effectively prolong the service life of the rack 14.
The rack 1 is further provided with a mounting seat 2 and a positioning frame 3 arranged on the mounting seat 2, the positioning frame 3 comprises a rod body part 31 and a head frame part 32, a jacking head 4 is arranged on the head frame part 32, and the jacking head 4 is used for jacking the head end part of the rack 14 to prevent the rack 14 from being separated from the spindle gear 13; an accommodating cavity (hidden by the rod part 31 in fig. 3 and not marked) is formed in the mounting seat 2, and the rod part 31 is inserted into the accommodating cavity; the adjusting device further comprises a first adjusting bolt 5 arranged on the mounting seat 2, wherein the first adjusting bolt 5 is arranged along the axial direction of the rod body part 31, and the first adjusting bolt 5 can extend into the accommodating cavity to drive the rod body part 31 to move towards one side of the rack 14; the mounting base 2 is further provided with a second threaded hole (which is not marked by the second adjusting bolt), and further comprises a second adjusting bolt (6, 6a), the second adjusting bolt (6, 6a) is screwed in the second threaded hole, the second adjusting bolt (6, 6a) is arranged along the radial direction of the rod body portion 31, and the head of the second adjusting bolt (6, 6a) extends into the accommodating cavity and can be pressed against the side edge of the rod body portion 31.
The first adjusting bolt 5 is disposed along the axial direction of the shaft portion 31, so that the first adjusting bolt 5 can axially press against the shaft portion 31 to axially position the shaft portion 31. In addition, the first adjusting bolt 5 can drive the rod body 31 to move along the axial direction so as to finely adjust the position of the rod body 31, and further finely adjust the position of the ram 4. In order to allow the first adjusting bolt to axially drive the rod body 31, a connecting thread may be provided on the mounting seat 2, so that the first adjusting bolt 5 is axially displaced to push the rod body 31 to move when the first adjusting bolt 5 is screwed, or the connecting thread may be provided on the rod body 31, and the first adjusting bolt 5 is axially positioned, so that when the first adjusting bolt 5 is screwed, the rod body 31 is axially moved back and forth by the thread transmission relationship between the first adjusting bolt 5 and the connecting thread.
Wherein the second adjusting bolt (6, 6a) is arranged along the radial direction of the rod body part 31, so that the second adjusting bolt (6, 6a) and the first adjusting bolt 5 are arranged in a mutually perpendicular arrangement relation, and the second adjusting bolt (6, 6a) presses the rod body part 31 from the radial direction, thereby reducing the vibration of the rod body part 31 in the radial direction driven by the pressing head 4 during the axial back and forth movement of the rack 14. But also axial positioning of the shank portion 31 with an axial frictional resistance increase by the second adjusting bolt (6, 6a) pressing against the shank portion 31.
According to the technical scheme, the invention has the beneficial technical effects that: because the mounting base 2 is provided with the first adjusting bolt 5 which is axially arranged and the second adjusting bolt (6, 6a) which is radially arranged, the first adjusting bolt 5 and the second adjusting bolt (6, 6a) can respectively press the rod body part 31 along two different axial and radial directions, so that the axial positioning capability of the rod body part 31 is cooperatively enhanced, the effective duration that the pressing head 4 is in a correct pressing position after the position is adjusted is prolonged, and the pressing stability of the pressing head 4 to the rack 14 is improved. In addition, the second adjusting bolt (6, 6a) can reduce the vibration of the rod part 31 driven by the top press head 4 in the radial direction during the axial back and forth movement of the rack 14, and further improve the pressing stability of the top press head 4.
Further, the mounting base 2 includes a base main body 31 and an auxiliary block 22 detachably disposed on the base main body 31, a first threaded hole (hidden by the first adjusting bolt 5 in fig. 3 and not marked) is disposed on the auxiliary block 22, and the first adjusting bolt 5 is screwed into the first threaded hole. Therefore, the processing of the first threaded hole is facilitated, and when the first threaded hole is damaged after long-term use, the auxiliary block 22 can be directly replaced without integrally replacing the mounting base 2, so that the maintenance cost is greatly reduced.
Further, an abutting flat surface portion 311 is provided at a position on the side of the lever portion 31, which abuts against the head of the second adjusting bolt (6, 6 a). Thus, the abutting engagement of the abutting flat surface portion 311 with the head portion of the second adjusting bolt (6, 6a) can reduce or prevent the radial rotation of the rod body portion 31.
As for the integral structure between the top pressing head 4 and the positioning frame 3, but a split structure is preferred for the convenience of replacing the top pressing head 4, a further technical proposal is that a groove 33 is arranged on the head frame part 32, the top pressing head 4 is detachably arranged on the groove 33, and at least part of the head wall body of the top pressing head 4 extends out of the groove 33 and abuts against the rack 14. In this way, the head 4 can be detached from the spacer 3 by means of the notches provided in the recess 33.
The top ram 4 may be stationarily disposed within the recess 33 to form sliding friction with the rack 14, but in this way wear of the top ram 4 is accelerated, and for this purpose, a positioning shaft 7 is further included, the positioning shaft 7 passing through upper and lower walls (331, 332) of the recess 33 and a central hole disposed in the top ram 4 to position the top ram 4 on the recess 33, the positioning shaft 7 being positioned on the upper and lower walls (331, 332) of the recess 33, the top ram 4 being rotatable on the positioning shaft 7. So that the ejector pin 4 forms rolling friction with the rack 14, and the abrasion of the ejector pin 4 can be reduced. In addition, the top pressing head 4 is mainly positioned in the groove 33 through the positioning shaft 7, so that the positioning of the top pressing head 4 can be basically released after the positioning shaft 7 is detached, and the top pressing head 4 can be detached from the groove 33 conveniently.
Claims (6)
1. The pipe bender with the abutting device comprises a rack, a main shaft arranged on the rack, a main shaft gear arranged on the main shaft, a rack in meshing transmission with the main shaft gear and a rack driving mechanism capable of driving the rack to move back and forth in the axial direction; the rack is characterized by further comprising a mounting seat arranged on the rack and a positioning frame arranged on the mounting seat, wherein the positioning frame comprises a rod body part and a headstock part, a jacking head is arranged on the headstock part and is used for jacking the head part of the rack to prevent the rack from being separated from the spindle gear; an accommodating cavity is formed in the mounting seat, and the rod body part is inserted into the accommodating cavity; the first adjusting bolt is arranged along the axial direction of the rod body part and can extend into the accommodating cavity to drive the rod body part to move towards one side of the rack; the mounting seat is further provided with a second threaded hole and a second adjusting bolt, the second adjusting bolt is screwed on the second threaded hole and is arranged along the radial direction of the rod body, and the head of the second adjusting bolt extends into the accommodating cavity and can be pressed against the side edge of the rod body.
2. The bender according to claim 1, wherein the mounting seat includes a seat main body and an auxiliary block detachably disposed on the seat main body, a first threaded hole is disposed on the auxiliary block, and the first adjusting bolt is screwed in the first threaded hole.
3. The bending machine according to claim 1, wherein an abutting flat surface portion is provided at a position on the side edge portion of the rod body that abuts against the head portion of the second adjusting bolt.
4. The bender according to claim 1, 2 or 3, wherein a recess is provided in said headframe portion, said ram being removably mounted in said recess, at least part of the head wall of said ram extending out of said recess and abutting against said rack.
5. The bender according to claim 4, further comprising a positioning shaft passing through the upper and lower walls of said recess and through a central opening provided in said indenter for positioning said indenter on said recess, said positioning shaft being positioned on the upper and lower walls of said recess, said indenter being rotatable on said positioning shaft.
6. The bender according to claim 1, 2 or 3, wherein a tail of the rack is deflectably disposed on an output shaft of the rack drive mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920501575.XU CN209918615U (en) | 2019-04-15 | 2019-04-15 | Pipe bender with abutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920501575.XU CN209918615U (en) | 2019-04-15 | 2019-04-15 | Pipe bender with abutting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209918615U true CN209918615U (en) | 2020-01-10 |
Family
ID=69073487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920501575.XU Active CN209918615U (en) | 2019-04-15 | 2019-04-15 | Pipe bender with abutting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209918615U (en) |
-
2019
- 2019-04-15 CN CN201920501575.XU patent/CN209918615U/en active Active
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