CN117444016B - Chair pipe fitting former - Google Patents
Chair pipe fitting former Download PDFInfo
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- CN117444016B CN117444016B CN202311781096.5A CN202311781096A CN117444016B CN 117444016 B CN117444016 B CN 117444016B CN 202311781096 A CN202311781096 A CN 202311781096A CN 117444016 B CN117444016 B CN 117444016B
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- pipe fitting
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- 238000005452 bending Methods 0.000 claims abstract description 75
- 230000007246 mechanism Effects 0.000 claims abstract description 66
- 230000008844 regulatory mechanism Effects 0.000 claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 230000001276 controlling effect Effects 0.000 claims abstract description 9
- 238000005553 drilling Methods 0.000 claims description 48
- 230000005540 biological transmission Effects 0.000 claims description 23
- 230000009471 action Effects 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 12
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/05—Bending tubes using mandrels or the like co-operating with forming members
- B21D9/07—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only
- B21D9/073—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only with one swinging forming member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
- B21D43/105—Manipulators, i.e. mechanical arms carrying a gripper element having several degrees of freedom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/16—Auxiliary equipment, e.g. machines for filling tubes with sand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
- B23Q7/04—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses chair pipe fitting forming equipment, which belongs to the technical field of pipe fitting processing equipment and comprises a frame, a control device, two pipe bending devices and a pipe fitting clamping mechanism arranged between the two pipe bending devices, wherein the frame is provided with a pipe bending distance regulating and controlling mechanism capable of controlling the distance between the two pipe bending devices and a straight pipe positioning device for positioning and clamping the pipe fitting on the pipe fitting clamping mechanism; the straight pipe positioning device comprises a straight pipe positioning base, a first positioning unit, a second positioning unit and an electric positioning regulation mechanism, wherein the electric positioning regulation mechanism is arranged on the straight pipe positioning base and connected with the first positioning unit and the second positioning unit to drive the first positioning unit and the second positioning unit to move, and the electric positioning regulation mechanism is controlled by the control device. The invention can realize the automatic positioning of the pipe fitting, and achieves the aim of improving the production automation degree and the processing efficiency of the pipe fitting.
Description
Technical Field
The invention relates to the technical field of pipe fitting processing equipment, in particular to chair pipe fitting forming equipment.
Background
The U-shaped pipe fitting is often used as a seat support frame of a seat or a back support frame of a back of a chair, and in the prior art, the U-shaped pipe fitting used on the chair is usually of a symmetrical structure, so that in order to improve the pipe bending efficiency, a double-head pipe bending machine is generally adopted for processing.
The utility model provides a double-end return bend equipment that chinese patent of reference patent number 202022812165.2 disclosed, it includes the frame, be provided with the setting element that is used for centre gripping pipe fitting, two bending apparatus who is used for buckling the pipe fitting in the frame, be provided with the locating part that is used for pipe fitting length direction location in the frame, the locating part includes two first limiting plates and drives two first limiting plates and be close to or keep away from each other's first regulating part, two the limiting plates are used for inconsistent with the both ends of pipe fitting, and first regulating part includes first two-way lead screw and drive hand wheel. When the positioning device is used, two pipe fittings are placed on the upper surface of the lower clamping die of the positioning piece, an operator drives the first bidirectional screw rod to rotate through the driving hand wheel, the first bidirectional screw rod drives the two first limiting plates to be close to each other, and the two first limiting plates position and clamp the two ends of the pipe fittings; then, the pipe fitting is clamped by utilizing the upper clamping die and the lower clamping die of the positioning piece in a matched mode, and then an operator drives the first bidirectional screw rod to rotate through the driving hand wheel, and the first bidirectional screw rod drives the two first limiting plates to be away from each other; then, two bending devices are utilized to simultaneously bend the pipe, so that the two ends of the pipe are bent to form a U-shaped pipe.
However, the limiting piece can effectively realize the positioning of the pipe fitting before being clamped by the positioning piece, but the limiting piece needs to be manually operated to carry out auxiliary positioning, which is not beneficial to improving the positioning efficiency.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides chair pipe fitting forming equipment.
The technical scheme adopted for solving the technical problems is as follows:
the chair pipe fitting forming equipment comprises a frame, a control device, two pipe bending devices and a pipe fitting clamping mechanism arranged between the two pipe bending devices, wherein a pipe bending distance regulating mechanism capable of controlling the distance between the two pipe bending devices and a straight pipe positioning device for positioning and clamping the pipe fitting on the pipe fitting clamping mechanism are arranged on the frame, and the pipe bending devices, the pipe fitting clamping mechanism and the pipe bending distance regulating mechanism are all connected and controlled by the control device; the method is characterized in that:
the straight pipe positioning device comprises a straight pipe positioning base, a first positioning unit, a second positioning unit and an electric positioning regulation and control mechanism, wherein the straight pipe positioning base is arranged on a frame, a positioning linear guide rail is arranged on the straight pipe positioning base, the first positioning unit and the second positioning unit are slidably arranged on the positioning linear guide rail, the electric positioning regulation and control mechanism is arranged on the straight pipe positioning base and connected with the first positioning unit and the second positioning unit to drive the first positioning unit and the second positioning unit to move, and the electric positioning regulation and control mechanism is controlled by the control device.
In the invention, the electric positioning regulation mechanism comprises a positioning servo motor and a positioning screw rod, wherein the positioning servo motor is arranged on a straight pipe positioning base, the positioning screw rod is rotatably arranged on the straight pipe positioning base, the positioning servo motor is connected and controlled by a control device, and the rotary output end of the positioning servo motor is in transmission connection with the positioning screw rod;
the positioning screw rod is a positive and negative tooth bidirectional ball screw rod, a first positioning nut for linking movement of the first positioning unit is sleeved on an orthodontic section of the positioning screw rod, and a second positioning nut for linking movement of the second positioning unit is sleeved on an opposite tooth section.
In the invention, the first positioning unit comprises a first positioning seat, a first positioning piece and a first sliding seat, wherein the first positioning piece and the first sliding seat are arranged on the first positioning seat, a first sliding block matched with the positioning linear guide rail is arranged on the first sliding seat, and the first positioning nut is fixedly connected with the first positioning seat.
In the invention, the second positioning unit comprises a second positioning seat, a second sliding seat and a second positioning piece arranged on the second positioning seat, wherein a second sliding block matched with the positioning linear guide rail is arranged on the second sliding seat; the second sliding seat is provided with an elastic positioning component capable of pushing the second positioning seat to move towards the first positioning seat by utilizing elasticity, and the second positioning nut is fixedly connected with the elastic positioning component.
In the invention, the elastic positioning component comprises a movable pushing seat and a movable pushing component, wherein the movable pushing seat is positioned between a second positioning seat and a first positioning seat, and the second positioning nut is fixed on the movable pushing seat; the movable pushing assembly comprises a movable push rod, an extension spring, a guide bearing and a spring spacer, a spring telescopic hole is formed in the second sliding seat, the guide bearing and the spring spacer are both arranged in the spring telescopic hole, and the movable push rod penetrates through the inner rings of the guide bearing and the spring spacer; the guide bearing is in sliding fit with the movable push rod; one end of the movable push rod penetrates through the spring telescopic hole and is fixedly connected with the movable push seat, and the other end of the movable push rod is provided with a spring limiting block; the extension spring is sleeved on the movable push rod, one end of the extension spring abuts against the spring limiting block, and the other end of the extension spring extends into the spring telescopic hole and abuts against the spring spacer block.
In the invention, the movable pushing components are two and respectively correspond to the two second sliding seats.
In the invention, the pipe bending device comprises a pipe bending base, a main wheel die, a bending die set, a first power device and a second power device; the bending module comprises a rotating seat, an auxiliary mould telescopic cylinder and an auxiliary mould plate, wherein the rotating seat is rotatably connected to the elbow base by adopting a first elbow rotating shaft, and the action output end of the first power device is in transmission connection with the first elbow rotating shaft; the auxiliary die telescopic cylinder is arranged on the rotary seat, the telescopic end of the auxiliary die telescopic cylinder is in transmission connection with the auxiliary die plate, an auxiliary die guide rail is arranged on the rotary seat, and the auxiliary die plate is in guide fit with the auxiliary die guide rail by adopting an auxiliary die sliding block; the main wheel die is connected with a second elbow rotating shaft penetrating through the center of the main wheel die, the second elbow rotating shaft penetrates through the first elbow rotating shaft and is coaxially arranged with the first elbow rotating shaft, and the second elbow rotating shaft is in transmission connection with the action output end of the second power device.
In the invention, a distance adjusting guide rail for guiding the movement of the pipe bending device is arranged on the frame, a pipe bending sliding block matched with the distance adjusting guide rail is arranged on the pipe bending base, the pipe bending distance adjusting mechanism comprises a distance adjusting servo motor arranged on the frame and a distance adjusting screw rod rotatably arranged on the frame, the distance adjusting servo motor is connected and controlled by a control device, and the rotary output end of the distance adjusting servo motor is in transmission connection with the distance adjusting screw rod; the distance adjusting screw rod is a positive and negative tooth bidirectional ball screw rod, a first elbow transmission nut matched with the positive tooth section of the distance adjusting screw rod is arranged on the elbow base of one elbow device, and a second elbow transmission nut matched with the negative tooth section of the distance adjusting screw rod is arranged on the elbow base of the other elbow device.
In the invention, the pipe fitting clamping mechanism comprises a fixed clamping die assembly, a movable clamping die assembly and a clamping lifting moving mechanism for driving the fixed clamping die assembly and the movable clamping die assembly to synchronously move up and down.
The invention has the beneficial effects that: the invention is provided with the electric positioning regulation mechanism which is connected and controlled by the control device, and the electric positioning regulation mechanism can synchronously drive the first positioning unit and the second positioning unit to move so as to push the pipe fitting to the middle position of the front end of the forming equipment, thereby realizing the automatic positioning of the pipe fitting in the pipe bending process and having the advantage of high positioning efficiency; and because no manual assistance is needed, the forming equipment can be matched with the feeding and discharging mechanical arm to automatically feed and discharge materials, and the purposes of improving the production automation degree and the processing efficiency of the pipe fitting are achieved.
Drawings
The invention is further described below with reference to the drawings and embodiments:
fig. 1 is a perspective view of the present embodiment;
fig. 2 is a front view of the present embodiment;
FIG. 3 is a perspective view of a straight tube positioning device;
FIG. 4 is a schematic view of the connection of the second set nut;
FIG. 5 is a schematic view of the structure of the movable pushing assembly;
FIG. 6 is a schematic structural view of a pipe bending apparatus;
FIG. 7 is a schematic view of the structure of the end positioning device;
FIG. 8 is a cross-sectional view of an end ferrule module;
FIG. 9 is a schematic view of the engagement of the rotation guide slot and the engagement guide;
FIG. 10 is a schematic representation of a variation of the transfer of mating guides from upper guide land valleys to lower guide land valleys;
FIG. 11 is a perspective view of the tubular clamping mechanism;
fig. 12 is a schematic view of a pipe after being processed by the procedures of pipe bending, drilling and the like.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-11, a chair pipe fitting forming device comprises a frame 1, a control device, two pipe bending devices 2 and a pipe fitting clamping mechanism 3 arranged between the two pipe bending devices 2, wherein the two pipe bending devices 2 are symmetrically arranged left and right by taking the pipe fitting clamping mechanism 3 as a symmetry axis, a pipe bending distance regulating mechanism 4 capable of controlling the distance between the two pipe bending devices 2 and a straight pipe positioning device 5 for positioning and clamping a pipe fitting on the pipe fitting clamping mechanism 3 are arranged on the frame 1, and the pipe bending devices 2, the pipe fitting clamping mechanisms 3 and the pipe bending distance regulating mechanism 4 are all controlled by the control device in a connecting way; the straight pipe positioning device 5 comprises a straight pipe positioning base 51, a first positioning unit 52, a second positioning unit 53 and an electric positioning regulation and control mechanism 54, wherein the straight pipe positioning base 51 is installed on the frame 1, a positioning linear guide 511 is arranged on the straight pipe positioning base 51, the first positioning unit 52 and the second positioning unit 53 are both slidably installed on the positioning linear guide 511, the electric positioning regulation and control mechanism 54 is installed on the straight pipe positioning base 51 and connected with the first positioning unit 52 and the second positioning unit 53 to drive the first positioning unit 52 and the second positioning unit 53 to move, and the electric positioning regulation and control mechanism 54 is controlled by a control device.
As a preferred embodiment, the electric positioning adjusting and controlling mechanism 54 includes a positioning servo motor 541 mounted on the straight pipe positioning base 51, and a positioning screw 542 rotatably mounted on the straight pipe positioning base 51, where the positioning servo motor 541 is controlled by a control device, and a rotation output end of the positioning servo motor 541 is connected with the positioning screw 542 in a transmission manner, so as to control the rotation of the positioning screw 542. In this embodiment, the positioning screw 542 is a bidirectional ball screw with positive and negative teeth, a first positioning nut 543 for moving the first positioning unit 52 is sleeved on the positive tooth section of the positioning screw 542, and a second positioning nut 544 for moving the second positioning unit 53 is sleeved on the negative tooth section. When the rotary output end of the positioning servo motor 541 rotates, the positioning screw rod 542 drives the first positioning unit 52 and the second positioning unit 53 to move in opposite directions or move in opposite directions, wherein when the first positioning unit 52 and the second positioning unit 53 move in opposite directions, the pipe fitting is pushed to the middle position of the front end of the forming equipment, the extension lengths of the pipe fitting at the left end and the right end of the pipe fitting clamping mechanism 3 are consistent as much as possible, and then the pipe fitting clamping mechanism 3 is utilized to clamp the pipe fitting, so that the automatic positioning of the pipe fitting is realized, and the quality of the pipe fitting during symmetrical pipe bending is improved; when the first positioning unit 52 and the second positioning unit 53 move oppositely, the first positioning unit 52 and the second positioning unit 53 are far away from the pipe fitting.
As a preferred embodiment, the first positioning unit 52 includes a first positioning seat 521, a first positioning member 522 disposed on the first positioning seat 521, and a first slide 523, where a first slider matched with the positioning linear rail 511 is disposed on the first slide 523, and the first positioning nut 543 is fixedly connected with the first positioning seat 521, so that when the positioning screw 542 rotates, the positioning screw 542 links the first positioning nut 543 to drive the first positioning member 522 on the first positioning seat 521 and the first positioning seat 521 to move to an adjusting position.
As a preferred embodiment, the second positioning unit 53 includes a second positioning seat 531, a second sliding seat 532, and a second positioning member 533 disposed on the second positioning seat 531, where the second sliding seat 532 is provided with a second sliding block 5321 that is matched with the positioning linear guide 511; because the straight pipe is generally obtained by cutting a long pipe into multiple sections by using a cutting device, the length of the straight pipe may have a certain error due to the influence of the cutting precision of the pipe, so that the problem that the first positioning unit 52 or/and the second positioning unit 53 cannot abut against two ends of the pipe to achieve positioning easily occurs.
As a preferred embodiment, the elastic positioning assembly 534 includes a movable pushing seat 5341 and a movable pushing assembly, the movable pushing seat 5341 is located between the second positioning seat 531 and the first positioning seat 521, the second positioning nut 544 is fixed on the movable pushing seat 5341, and two movable pushing assemblies respectively correspond to two second sliding seats 532. Further, the movable pushing assembly comprises a movable pushing rod 5342, an extension spring 5343, a guide bearing 535 and a spring spacer 536, a spring telescopic hole is formed in the second sliding seat 532, the guide bearing 535 and the spring spacer 536 are both arranged in the spring telescopic hole, and the movable pushing rod 5342 passes through the inner rings of the guide bearing 535 and the spring spacer 536; the guide bearing 535 is a linear bearing, and the guide bearing 535 and the movable push rod 5342 are in sliding fit, so that the movable push rod 5342 can move more smoothly; one end of the movable push rod 5342 passes through the spring telescopic hole and is fixedly connected with the movable push seat 5341, and the other end of the movable push rod is provided with a spring limiting block 537; the extension spring 5343 is sleeved on the movable push rod 5342, one end of the extension spring 5343 abuts against the spring limiting block 537, and the other end of the extension spring 5343 extends into the spring telescopic hole and abuts against the spring spacer 536.
When the positioning screw 542 rotates to control the first positioning unit 52 and the second positioning unit 53 to move in opposite directions, the second positioning nut 544 links the movable pushing seat 5341 and the movable pushing rod 5342 to move simultaneously, so that the spring stopper 537 compresses the extension spring 5343, and the compressed extension spring 5343 acts on the spring stopper 537 in a reaction manner, thereby pushing the second slide seat 532 to realize the action of the second positioning unit 53 in pipe positioning. When the positioning screw 542 rotationally controls the first positioning unit 52 and the second positioning unit 53 to move in opposite directions, the second positioning nut 544 links the movable push seat 5341 and the movable push rod 5342 to move simultaneously, and the extension spring 5343 is expanded; when the movable pushing seat 5341 pushes the second sliding seat 532, the second sliding seat 532 is driven to move, so as to realize the action when the second positioning unit 53 releases the pipe fitting. The elastic positioning assembly 534 pushes the second positioning unit 53 to move by using elastic support, so that the occurrence that the first positioning unit 52 and the second positioning unit 53 cannot effectively collide with the pipe in the pipe positioning process can be reduced, and effective implementation of pipe positioning is ensured.
As a preferred embodiment, the pipe bending device 2 includes a pipe bending base 21, a main wheel die 22, a bending module 23, a first power device and a second power device, the main wheel die 22 is circular, a cross section 221 and a semicircular first die groove 222 are disposed on the outer circumferential surface of the main wheel die 22, the first die groove 222 is used for accommodating a pipe, and two ends of the first die groove 222 are respectively connected with two ends of the cross section 221; the bending module 23 comprises a rotating seat 231, a secondary mould telescopic cylinder 232 and a secondary mould 233, wherein the rotating seat 231 is rotatably connected to the elbow base 21 by adopting a first elbow rotating shaft, and the action output end of the first power device is in transmission connection with the first elbow rotating shaft; the auxiliary die telescopic cylinder 232 is arranged on the rotary seat 231, the telescopic end of the auxiliary die telescopic cylinder is in transmission connection with the auxiliary die plate 233, an auxiliary die guide rail is arranged on the rotary seat 231, the auxiliary die plate 233 is matched on the auxiliary die guide rail in a guiding way by adopting an auxiliary die sliding block, and the auxiliary die telescopic cylinder 232 can drive the auxiliary die plate 233 to slide along the auxiliary die guide rail so as to be close to or far away from the main wheel die 22, so that the auxiliary die telescopic cylinder is suitable for pipe fittings with different radiuses; a second semicircular die groove corresponding to the first die groove 222 on the main wheel die 22 is formed in the auxiliary die plate 233, and the first die groove 222 and the second die groove are matched to accommodate a pipe fitting; the main wheel die 22 is connected with a second elbow rotating shaft 24 penetrating through the center of the main wheel die, the second elbow rotating shaft 24 penetrates through the first elbow rotating shaft and is coaxially arranged with the first elbow rotating shaft, and the second elbow rotating shaft 24 is in transmission connection with the action output end of the second power device. The pipe bending device 2 is the prior art, and will not be described in detail.
As a preferred embodiment, a distance adjusting guide rail for guiding the pipe bending device 2 to move is arranged on the frame 1, a pipe bending sliding block matched with the distance adjusting guide rail is arranged on the pipe bending base 21, the pipe bending distance adjusting mechanism 4 comprises a distance adjusting servo motor 41 arranged on the frame 1 and a distance adjusting screw rod 42 rotatably arranged on the frame 1, the distance adjusting servo motor 41 is connected and controlled by a control device, and a rotary output end of the distance adjusting servo motor 41 is in transmission connection with the distance adjusting screw rod 42 so as to control the rotation of the distance adjusting screw rod 42. In this embodiment, the distance adjusting screw rod 42 is a positive and negative tooth bidirectional ball screw, wherein a first elbow transmission nut matched with the positive tooth section of the distance adjusting screw rod 42 is arranged on the elbow base 21 of one elbow device 2, and a second elbow transmission nut matched with the negative tooth section of the distance adjusting screw rod 42 is arranged on the elbow base 21 of the other elbow device 2. When the rotary output end of the distance adjusting servo motor 41 rotates, the distance adjusting screw rod 42 drives the two pipe bending devices 2 to move in opposite directions or move in opposite directions, so that the distance between the two pipe bending devices 2 is adjusted, and the requirements of pipe fitting machining with different lengths can be met. Meanwhile, as the two pipe bending devices 2 are symmetrically arranged by taking the pipe clamping mechanism 3 as a symmetry axis, when the distance between the two pipe bending devices 2 changes, the pipe clamping mechanism 3 is always positioned between the two pipe bending devices 2, so that the pipe clamping mechanism 3 is ensured to clamp a pipe and is matched with the two pipe bending devices 2 to realize a pipe bending process.
Because the U-shaped pipe fitting is usually fixed by bolts when being connected with the seat plate or the chair back, the U-shaped pipe fitting needs to be provided with through holes, the current drilling procedure of the U-shaped pipe fitting is usually to move the U-shaped pipe fitting to the drilling device 6 for drilling after the pipe bending of the pipe bending device 2 is finished, and certain clamping time and transferring time are needed for the U-shaped pipe fitting in the process, so that the processing efficiency of the U-shaped pipe fitting is reduced; in order to improve the processing efficiency, the pipe bending base 21 is further provided with a drilling device 6 for drilling the pipe, and after the pipe is bent to form a vertical section, the drilling device 6 can directly drill the vertical section of the pipe, so that the processing efficiency of the pipe is improved. In this embodiment, the drilling device 6 includes a drilling machine 61 for driving a drill bit to drill, and a drilling triaxial moving mechanism 62 for driving the drilling machine 61 to move, where the drilling triaxial moving mechanism 62 and the drilling machine 61 are both controlled by a control device, and the drilling triaxial moving mechanism 62 and the drilling machine 61 are commercially available mechanisms, and the drilling machine 61 is installed on an action output end of the drilling triaxial moving mechanism 62; the three-axis drilling movement mechanism 62 is installed on the elbow base 21, and can drive the drilling machine 61 to perform X-direction movement, Y-direction movement and Z-direction movement, so that the drilling machine 61 can drill pipes with different sizes.
As a preferred embodiment, a drilling machine action space 210 is provided in the elbow seat 21, a drilling hole inlet and outlet penetrating through the front end of the elbow seat 21 is provided at the front end of the drilling machine action space 210, the drilling three-axis moving mechanism 62 is provided in the drilling machine action space 210, and the drilling machine 61 can enter and exit the drilling machine action space 210 from the drilling hole inlet and outlet position under the driving of the drilling three-axis moving mechanism 62, so that the drilling machine 61 can extend out of the elbow seat 21 to perform drilling work, and then is retracted into the drilling machine action space 210 after drilling is completed.
As a preferred embodiment, the drilling operation is affected because the drill bit will produce a thrust force on the vertical section of the pipe when the pipe is drilled by the drilling device 6, which will tend to flip the pipe forward. In order to solve the technical problem, the pipe bending base 21 is provided with an end positioning device 7 for positioning the end of the pipe, and when the drilling device 6 drills, the end positioning device 7 positions the end of the pipe, thereby preventing the pipe from overturning forwards and ensuring the stable implementation of the drilling work.
As a preferred embodiment, the end positioning device 7 comprises an end core inserting module 71 for being inserted into the end of the pipe, and a positioning triaxial moving mechanism 72 for driving the end core inserting module 71 to move; the positioning triaxial moving mechanism 72 is controlled by the control device, and can drive the end core-inserting module 71 to perform X-direction movement, Y-direction movement and Z-direction movement; after the pipe fitting is bent, the positioning triaxial moving mechanism 72 controls the end portion core inserting module 71 to move, so that one end of the end portion core inserting module 71 is inserted into the end portion of the pipe fitting, and therefore the end portion of the pipe fitting is restrained, and stable implementation of drilling operation is guaranteed.
As a preferred embodiment, the end core inserting module 71 includes a core inserting lifting seat 711, a core inserting connecting seat 712 and a positioning core inserting 713, the core inserting lifting seat 711 is connected to the action output end of the positioning triaxial moving mechanism 72, and a telescopic accommodating groove 7111 with an opening at the bottom is arranged on the core inserting lifting seat 711; the positioning ferrule 713 is mounted at the bottom of the ferrule connecting seat 712 and can rotate along with the ferrule connecting seat 712, and the ferrule connecting seat 712 and the positioning ferrule 713 form a ferrule unit; in the present embodiment, the positioning ferrule 713 is composed of a ferrule head 7131 and a ferrule portion 7132 connected from top to bottom.
Further, the upper portion of the ferrule connecting seat 712 is a rotating shaft portion 7121 rotatably disposed in the telescopic accommodating groove 7111, and the ferrule connecting seat 712 can independently rotate relative to the ferrule lifting seat 711 by means of the rotation fit between the rotating shaft portion 7121 and the telescopic accommodating groove 7111; the outer peripheral surface of the rotating shaft portion 7121 is provided with a rotating guide groove 100, the rotating guide groove 100 is annularly arranged on the outer peripheral surface of the rotating shaft portion 7121, an upper guide groove surface 101 and a lower guide groove surface 102 of the rotating guide groove 100 are both guide curved surfaces with wave crests and wave troughs, and the wave crests and the wave troughs of the upper guide groove surface 101 and the lower guide groove surface 102 are arranged in a staggered manner; the ferrule lifting seat 711 is provided with at least one matching guide 714 which is in sliding fit in the rotation guide groove 100, and one end of the matching guide 714 is in threaded fit in a mounting screw hole of the ferrule lifting seat 711.
Still further, a ferrule spring 715 is disposed in the telescopic accommodating groove 7111 above the rotating shaft 7121, and the ferrule spring 715 provides a downward elastic pushing force for the rotating shaft 7121, so that the mating guide 714 is normally located in the trough of the upper guiding groove surface 101, where normally means that the ferrule unit is not inserted into the pipe end for positioning.
As shown in fig. 10, in a normal state, the ferrule unit is dropped under the action of gravity and the elasticity of the ferrule spring 715, at this time, the ferrule connection base 712 is extended downward to the longest length outside the telescopic accommodation groove 7111, and the mating guide 714 is mated in one trough of the upper guide groove surface 101; when the positioning triaxial moving mechanism 72 works, the end part inserting module 71 is controlled to move, so that the inserting core 7132 of the positioning inserting core 713 is inserted into the vertical section end part of the pipe fitting, until the inserting core 7131 of the positioning inserting core 713 abuts against the vertical section end part of the pipe fitting, the inserting core unit is forced to move upwards, the lower guide groove surface 102 is in sliding fit with the matched guide piece 714, and because the trough parts of the upper guide groove surface 101 and the lower guide groove surface 102 are arranged in a staggered manner, the inserting core unit moves upwards in a rotating manner along the lower guide groove surface 102 until the matched guide piece 714 abuts against the trough part of the lower guide groove surface 102, the inserting core unit cannot move upwards, and the positioning of the vertical section end part of the pipe fitting is completed; when the positioning triaxial moving mechanism 72 controls the end core inserting module 71 to move so that the positioning core inserting module 713 is separated from the pipe fitting for resetting, the end core inserting module 71 integrally moves upwards, in the process, the core inserting unit falls down under the action of gravity and the elasticity of the core inserting spring 715, so that the matched guide piece 714 is matched in the other trough of the upper guide groove surface 101, the core inserting unit rotates for a certain angle, the pipe fitting is supported by other sides when the next pipe fitting is positioned by the core inserting unit, and the problem of deformation caused by long-time unilateral stress of the core inserting unit is avoided; meanwhile, the core inserting unit can move up and down relative to the core inserting lifting seat 711, so that the core inserting unit is prevented from violent collision with the pipe fitting in the process of being inserted into the end part of the pipe fitting when the length of the pipe fitting is in error, and the purpose of ensuring the production quality of the pipe fitting is achieved.
As a preferred embodiment, the positioning ferrule 713 is detachably mounted on the ferrule connection seat 712, for example, a ferrule positioning groove 7122 is provided on the ferrule connection seat 712, a ferrule positioning portion 7133 adapted to the ferrule positioning groove 7122 is provided on the ferrule 7131, the ferrule 7131 and the ferrule connection seat 712 are connected by a ferrule bolt combination, after the ferrule positioning groove 7122 and the ferrule positioning portion 7133 are adapted, circumferential positioning between the ferrule connection seat 712 and the positioning ferrule 713 can be achieved, and then the ferrule 7131 and the ferrule connection seat 712 are combined and connected by the ferrule bolt, so that the positioning ferrule 713 is detachably mounted on the ferrule connection seat 712. In order to allow the insert core 7132 to be accurately inserted into the end of the vertical section of the pipe, the lower end of the insert core 7132 is a tapered head whose diameter is gradually reduced from top to bottom. Of course, not limited to the above structure, in other embodiments, the end insert module 71 only includes the positioning insert 713, and the end of the pipe can be inserted for positioning.
As a preferred embodiment, the pipe clamping mechanism 3 comprises a fixed clamping die assembly 31, a movable clamping die assembly 32 and a clamping lifting moving mechanism 33 for driving the fixed clamping die assembly 31 and the movable clamping die assembly 32 to synchronously move up and down; the fixed clamp module 31 is located below the movable clamp module 32, the fixed clamp module 31 comprises a fixed clamp seat 311 and a fixed clamp block 312 arranged on the fixed clamp seat 311, the movable clamp module 32 comprises a movable clamp seat 321, a movable clamp block 322 arranged on the movable clamp seat 321 and a clamp block driving telescopic cylinder 323 for driving the movable clamp block 322 to move relative to the fixed clamp block 312, the fixed clamp seat 311 and the movable clamp seat 321 are arranged on the action output end of the clamping lifting moving mechanism 33, and the clamping lifting moving mechanism 33 and the clamp block driving telescopic cylinder 323 are connected and controlled by a control device. In this embodiment, the clamp block driving telescopic cylinder 323 adopts a hydraulic cylinder. Meanwhile, in order to better position the pipe fitting, the end of the fixed clamping block 312 facing the movable clamping block 322 and the end of the movable clamping block 322 facing the fixed clamping block 312 are respectively provided with a pipe clamping groove, and when the fixed clamping block 312 and the movable clamping block 322 are matched to clamp the pipe fitting, the upper end and the lower end of the pipe fitting are respectively matched with the pipe clamping grooves of the movable clamping block 322 and the fixed clamping block 312.
As a preferred embodiment, the clamping lifting moving mechanism 33 includes a clamping lifting base 331 mounted on the frame 1, a clamping lifting screw rod 332 rotatably mounted on the clamping lifting base 331, a clamping lifting servo motor 333 mounted on the clamping lifting base 331, and a clamping lifting sliding seat 334 driven to lift by the clamping lifting screw rod 332, wherein the clamping lifting servo motor 333 is controlled by a control device in a connection manner, and a rotation output end of the clamping lifting servo motor 333 is in transmission connection with the clamping lifting screw rod 332; the clamping lifting base 331 is provided with a clamping lifting guide block, the clamping lifting slide seat 334 is provided with a clamping fit nut which is matched with the clamping lifting screw rod 332 for transmission, and a clamping lifting guide rail 335 which is matched with the clamping lifting guide block for guiding, and the fixed clamping seat 311 and the movable clamping seat 321 are both arranged on the clamping lifting slide seat 334. When the control device controls the clamping lifting servo motor 333 to rotate, the clamping lifting screw rod 332 drives the clamping lifting sliding seat 334 to lift, so that the fixed clamping module 31 and the movable clamping module 32 synchronously lift to adjust the height position of the pipe fitting.
The embodiment also discloses a working method of the pipe fitting forming equipment, which is used for processing the U-shaped pipe fitting and comprises the following steps:
step 1, setting pipe fitting bent pipe parameters on a man-machine interaction panel of a control device;
step 2, the control device firstly controls the pipe bending distance regulating and controlling mechanism 4 to regulate the distance between the two pipe bending devices 2 according to pipe bending parameters; then, the electric positioning regulation mechanism 54 is controlled to regulate the distance between the first positioning unit 52 and the second positioning unit 53, at this time, the distance between the first positioning unit 52 and the second positioning unit 53 is a positioning standby distance, the length of the positioning standby distance is greater than that of the pipe fitting in a straight pipe state, the positioning standby distance is equal to +50-100 mm of the length of the pipe fitting in the straight pipe state, and the control device sets the current positions of the first positioning unit 52 and the second positioning unit 53 as a positioning starting point and sets the length of the pipe fitting in the straight pipe state as a positioning end point; then controlling the clamping lifting moving mechanism 33 to adjust the height positions of the fixed clamping die assembly 31 and the movable clamping die assembly 32, wherein the current positions of the fixed clamping die assembly 31 and the movable clamping die assembly 32 are the starting points of clamping pipes;
step 3, the control device controls the feeding and discharging manipulator to clamp the pipe fitting in the straight pipe state from the blank stacking area and put the pipe fitting between the movable clamping block 322 and the fixed clamping block 312; then the control device controls the first positioning unit 52 and the second positioning unit 53 to move in opposite directions according to the stroke parameter of the positioning end point, so that the first positioning unit 52 and the second positioning unit 53 push the pipe fitting to be positioned; then the control device controls the clamping blocks to drive the telescopic cylinders 323 to work, so that the movable clamping blocks 322 and the fixed clamping blocks 312 are matched to clamp the pipe fitting, after the movable clamping blocks 322 and the fixed clamping blocks 312 are matched to clamp the pipe fitting, the control device controls the first positioning unit 52 and the second positioning unit 53 to move back to back according to the stroke parameters of the positioning starting points, so that the first positioning unit 52 and the second positioning unit 53 are reset to the positioning starting point positions, and the first positioning unit 52 and the second positioning unit 53 are prevented from interfering with the pipe fitting in the pipe bending process;
step 4, after the first positioning unit 52 and the second positioning unit 53 move oppositely, the control device controls the clamping die assembly 31 and the movable clamping die assembly 32 to move upwards by an H1, wherein the value of the H1 is equal to 20-100 mm, so that the transverse section of the pipe fitting enters the first die groove 222 of the main wheel die 22; then the control device controls the auxiliary die telescopic cylinder 232 to drive the auxiliary die plate 233 to slide along the auxiliary die guide rail to be close to the main die 22, so that the upper end and the lower end of the pipe fitting are respectively matched in the first die cavity 222 and the second die cavity, and then the first power device is controlled to drive the bending die set 23 to rotate relative to the main die 22, so that the two ends of the pipe fitting are upwards bent by 90 degrees to form a vertical section of the pipe fitting, and a U-shaped pipe fitting is obtained;
step 5, after the pipe fitting is bent, the control device controls the positioning triaxial moving mechanism 72 to control the end portion core inserting module 71 to move, so that one end of the end portion core inserting module 71 is inserted into the end portion of the pipe fitting, and therefore the end portion of the pipe fitting is restrained, and in the process that the end portion core inserting module 71 enters the end portion of the pipe fitting, a core inserting unit of the end portion core inserting module 71 can rotate; then controlling the auxiliary die telescopic cylinder 232 of the bending die set 23 to transversely move the auxiliary die plate 233 away from the main wheel die 22 so as to separate the vertical section part of the pipe fitting from the auxiliary die plate 233; then, the second power device is utilized to drive the main wheel die 22 to rotate to a position where the cutting surface 221 is opposite to the auxiliary die plate 233, so that a gap between the main wheel die 22 and the pipe fitting is increased, the vertical section part of the pipe fitting is separated from the main wheel die 22, and avoidance gaps are reserved between the main wheel die 22 and the vertical section of the pipe fitting and between the auxiliary die plate 233 and the vertical section of the pipe fitting by the action, so that a drill bit on the drilling machine 61 is prevented from being collided with the main wheel die 22 and the auxiliary die plate 233 when drilling is carried out, and stable implementation of drilling processing is ensured;
step 6, the control device controls the drilling device 6 to drill the bent pipe fitting according to the drilling parameters, after the drilling is finished, the control device controls the control device to control the positioning triaxial moving mechanism 72 to control the end core inserting module 71 to move and reset, so that one end of the end core inserting module 71 exits from the end of the pipe fitting, and in the resetting process of the end core inserting module 71, the core inserting unit of the end core inserting module 71 can rotate;
step 7, after the end core inserting module 71 is reset, the control device controls the clamp setting module 31 and the movable clamp module 32 to move downwards for resetting, so that the transverse section of the pipe fitting is separated from the main wheel die 22;
step 8, the control device controls the feeding and discharging mechanical arm to clamp the pipe fitting, then controls the fixed clamping module 31 and the movable clamping module 32 to release the pipe fitting, and enables the feeding and discharging mechanical arm to transfer the processed pipe fitting into a finished product area for placement, so that the processes of pipe fitting pipe bending, drilling and the like are completed, and a U-shaped pipe fitting after drilling is obtained, as shown in fig. 12; in the process that the feeding and discharging mechanical arm transfers the processed pipe fitting to the finished product area for placement, the control device controls the first power device and the second power device to drive the bending module 23 and the main wheel die 22 to rotate and restore to the initial positions respectively;
and 9, after the drilled pipe fitting is placed in the finished product area by the feeding and discharging manipulator, returning to the step 3, and enabling the feeding and discharging manipulator to continuously clamp the pipe fitting in the straight pipe state for processing, so that the cycle is realized, and the purpose of setting the pipe fitting for mass production at one time is achieved.
The foregoing is only a preferred embodiment of the present invention, and all technical solutions for achieving the object of the present invention by substantially the same means are included in the scope of the present invention.
Claims (7)
1. The chair pipe fitting forming equipment comprises a frame (1), a control device, two pipe bending devices (2) and a pipe fitting clamping mechanism (3) arranged between the two pipe bending devices (2), wherein a pipe bending distance regulating mechanism (4) capable of controlling the distance between the two pipe bending devices (2) and a straight pipe positioning device (5) for positioning and clamping the pipe fitting on the pipe fitting clamping mechanism (3) are arranged on the frame (1), and the pipe bending devices (2), the pipe fitting clamping mechanism (3) and the pipe bending distance regulating mechanism (4) are all controlled by the control device; the method is characterized in that:
the straight pipe positioning device (5) comprises a straight pipe positioning base (51), a first positioning unit (52), a second positioning unit (53) and an electric positioning regulation mechanism (54), wherein the straight pipe positioning base (51) is installed on a frame (1), a positioning linear guide rail (511) is arranged on the straight pipe positioning base (51), the first positioning unit (52) and the second positioning unit (53) are both slidably installed on the positioning linear guide rail (511), and the electric positioning regulation mechanism (54) is installed on the straight pipe positioning base (51) and connected with the first positioning unit (52) and the second positioning unit (53) to drive the first positioning unit (52) and the second positioning unit (53) to move, and the electric positioning regulation mechanism (54) is controlled by the connection of a control device;
the pipe bending device (2) comprises a pipe bending base (21), a main wheel die (22), a bending die set (23), a first power device and a second power device; the bending module (23) comprises a rotating seat (231), an auxiliary die telescopic cylinder (232) and an auxiliary die plate (233), wherein the rotating seat (231) is rotatably connected to the bent pipe base (21) by adopting a first bent pipe rotating shaft, and the action output end of the first power device is in transmission connection with the first bent pipe rotating shaft; the auxiliary die telescopic cylinder (232) is arranged on the rotary seat (231) and the telescopic end of the auxiliary die telescopic cylinder is in transmission connection with the auxiliary die plate (233), an auxiliary die guide rail is arranged on the rotary seat (231), and the auxiliary die plate (233) is in guide fit with the auxiliary die guide rail by adopting an auxiliary die slide block; the main wheel die (22) is connected with a second bent pipe rotating shaft (24) penetrating through the center of the main wheel die, the second bent pipe rotating shaft (24) penetrates through the first bent pipe rotating shaft and is coaxially arranged with the first bent pipe rotating shaft, and the second bent pipe rotating shaft (24) is in transmission connection with an action output end of the second power device;
the bent pipe base (21) is also provided with a drilling device (6) for drilling the pipe fitting and an end positioning device (7) for positioning the end part of the pipe fitting;
the end positioning device (7) comprises an end core inserting module (71) for being inserted into the end part of the pipe fitting and a positioning triaxial moving mechanism (72) for driving the end core inserting module (71) to move;
the end core inserting module (71) comprises a core inserting lifting seat (711), a core inserting connecting seat (712) and a positioning core inserting (713), wherein the core inserting lifting seat (711) is connected to the action output end of the positioning triaxial moving mechanism (72), and a telescopic accommodating groove (7111) with an opening at the bottom is arranged on the core inserting lifting seat (711); the positioning insert core (713) is arranged at the bottom of the insert core connecting seat (712) and can rotate along with the insert core connecting seat (712), and the insert core connecting seat (712) and the positioning insert core (713) form an insert core unit;
the upper part of the ferrule connecting seat (712) is a rotating shaft part (7121) which is rotatably arranged in the telescopic accommodating groove (7111), and the ferrule connecting seat (712) can independently rotate relative to the ferrule lifting seat (711) by utilizing the rotation fit of the rotating shaft part (7121) and the telescopic accommodating groove (7111); the outer peripheral surface of the rotary shaft part (7121) is provided with a rotary guide groove (100), the rotary guide groove (100) is annularly arranged on the outer peripheral surface of the rotary shaft part (7121), an upper guide groove surface (101) and a lower guide groove surface (102) of the rotary guide groove (100) are guide curved surfaces with wave crests and wave troughs, and the wave crests and the wave troughs of the upper guide groove surface (101) and the lower guide groove surface (102) are arranged in a staggered mode; at least one matching guide piece (714) which is matched in the rotary guide groove (100) in a sliding way is arranged on the inserting core lifting seat (711);
a core inserting spring (715) positioned above the rotating shaft part (7121) is arranged in the telescopic accommodating groove (7111), and the core inserting spring (715) provides elastic thrust for the rotating shaft part (7121) to move downwards;
the positioning insert core (713) consists of an insert core head (7131) and an insert core (7132) which are connected from top to bottom;
under the normal state, the core inserting unit falls under the action of gravity and the elasticity of the core inserting spring (715), at the moment, the core inserting connecting seat (712) stretches out of the telescopic accommodating groove (7111) downwards to the longest extent, and the matched guide piece (714) is matched in one trough of the upper guide groove surface (101); when the positioning triaxial moving mechanism (72) is in operation, the end part inserting module (71) is controlled to move, so that the inserting core part (7132) of the positioning inserting core (713) is inserted into the end part of the vertical section of the pipe fitting, until the inserting core unit is forced to move upwards after the inserting core head (7131) of the positioning inserting core (713) is propped against the end part of the vertical section of the pipe fitting, the lower guide groove surface (102) is in sliding fit with the matched guide piece (714), at the moment, the inserting core unit moves upwards in a rotating way along the lower guide groove surface (102) until the matched guide piece (714) is propped against the trough of the lower guide groove surface (102), and the inserting core unit cannot move upwards continuously, so that the positioning of the end part of the vertical section of the pipe fitting is completed; when the positioning triaxial moving mechanism (72) controls the end portion core inserting module (71) to move so that the positioning core inserting module (713) is separated from the pipe fitting for resetting, the end portion core inserting module (71) integrally moves upwards, in the process, the core inserting unit falls down under the action of gravity and the elasticity of the core inserting spring (715), the matching guide piece (714) is matched in the other trough of the upper guide groove surface (101), and the core inserting unit rotates for a certain angle.
2. A chair tube forming apparatus according to claim 1, wherein: the electric positioning regulation mechanism (54) comprises a positioning servo motor (541) arranged on the straight pipe positioning base (51) and a positioning screw rod (542) rotatably arranged on the straight pipe positioning base (51), the positioning servo motor (541) is connected and controlled by a control device, and the rotary output end of the positioning servo motor (541) is in transmission connection with the positioning screw rod (542);
the positioning screw rod (542) is a positive and negative tooth bidirectional ball screw rod, a first positioning nut (543) for linking the movement of the first positioning unit (52) is sleeved on an orthodontic section of the positioning screw rod (542), and a second positioning nut (544) for linking the movement of the second positioning unit (53) is sleeved on an opposite tooth section.
3. A chair tube forming apparatus according to claim 2, wherein: the first positioning unit (52) comprises a first positioning seat (521), a first positioning piece (522) and a first sliding seat (523), wherein the first positioning piece (522) and the first sliding seat (523) are arranged on the first sliding seat (523), the first sliding seat is provided with a first sliding block matched with the positioning linear guide rail (511), and the first positioning nut (543) is fixedly connected with the first positioning seat (521).
4. A chair tube forming apparatus according to claim 3, wherein: the second positioning unit (53) comprises a second positioning seat (531), a second sliding seat (532) and a second positioning piece (533) arranged on the second positioning seat (531), and a second sliding block (5321) matched with the positioning linear guide rail (511) is arranged on the second sliding seat (532); an elastic positioning assembly (534) capable of pushing the second positioning seat (531) to move towards the first positioning seat (521) by utilizing elasticity is arranged on the second sliding seat (532), and the second positioning nut (544) is fixedly connected with the elastic positioning assembly (534);
the elastic positioning assembly (534) comprises a movable pushing seat (5341) and a movable pushing assembly, the movable pushing seat (5341) is positioned between a second positioning seat (531) and a first positioning seat (521), and the second positioning nut (544) is fixed on the movable pushing seat (5341); the movable pushing assembly comprises a movable pushing rod (5342), an extension spring (5343), a guide bearing (535) and a spring spacer (536), a spring telescopic hole is formed in the second sliding seat (532), the guide bearing (535) and the spring spacer (536) are both arranged in the spring telescopic hole, and the movable pushing rod (5342) penetrates through the inner rings of the guide bearing (535) and the spring spacer (536); the guide bearing (535) is in sliding fit with the movable push rod (5342); one end of the movable push rod (5342) penetrates through the spring telescopic hole and is fixedly connected with the movable push seat (5341), and the other end of the movable push rod is provided with a spring limiting block (537); the extension spring (5343) is sleeved on the movable push rod (5342), one end of the extension spring (5343) abuts against the spring limiting block (537), and the other end of the extension spring extends into the spring telescopic hole and abuts against the spring spacer block (536).
5. The chair tube forming apparatus of claim 4, wherein: the movable pushing components are two and respectively correspond to the two second sliding seats (532).
6. A chair tube forming apparatus according to claim 1, wherein: the device comprises a frame (1), a distance adjusting guide rail for guiding a pipe bending device (2) to move, a pipe bending base (21) is provided with a pipe bending sliding block matched with the distance adjusting guide rail, a pipe bending distance adjusting mechanism (4) comprises a distance adjusting servo motor (41) arranged on the frame (1) and a distance adjusting screw rod (42) rotatably arranged on the frame (1), the distance adjusting servo motor (41) is connected and controlled by a control device, and the rotary output end of the distance adjusting servo motor (41) is in transmission connection with the distance adjusting screw rod (42); the distance adjusting screw rod (42) is a positive and negative tooth bidirectional ball screw rod, a first elbow transmission nut matched and driven with the positive tooth section of the distance adjusting screw rod (42) is arranged on an elbow base (21) of one elbow device (2), and a second elbow transmission nut matched and driven with the negative tooth section of the distance adjusting screw rod (42) is arranged on the elbow base (21) of the other elbow device (2).
7. A chair tube forming apparatus according to claim 1, wherein: the pipe fitting clamping mechanism (3) comprises a fixed clamping die assembly (31), a movable clamping die assembly (32) and a clamping lifting moving mechanism (33) for driving the fixed clamping die assembly (31) and the movable clamping die assembly (32) to synchronously move up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311781096.5A CN117444016B (en) | 2023-12-22 | 2023-12-22 | Chair pipe fitting former |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311781096.5A CN117444016B (en) | 2023-12-22 | 2023-12-22 | Chair pipe fitting former |
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| CN117444016B true CN117444016B (en) | 2024-03-12 |
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| CN117444016A (en) | 2024-01-26 |
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