CN109926492B - Pipe fitting processing and forming machine, processing and forming method and side punching flanging device - Google Patents
Pipe fitting processing and forming machine, processing and forming method and side punching flanging device Download PDFInfo
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- CN109926492B CN109926492B CN201910144565.XA CN201910144565A CN109926492B CN 109926492 B CN109926492 B CN 109926492B CN 201910144565 A CN201910144565 A CN 201910144565A CN 109926492 B CN109926492 B CN 109926492B
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- 238000004080 punching Methods 0.000 title claims abstract description 187
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000006073 displacement reaction Methods 0.000 claims description 25
- 230000017105 transposition Effects 0.000 claims description 13
- 230000003068 static effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005057 refrigeration Methods 0.000 abstract 1
- 238000005336 cracking Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 210000000078 claw Anatomy 0.000 description 3
- 238000004590 computer program Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
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Abstract
The invention relates to a pipe fitting processing and forming machine, a processing and forming method and a side punching and flanging device, and belongs to the technical field of automatic processing. The pipe fitting processing and forming machine comprises a frame and a side punching flanging device; the side punching flanging device comprises a clamping die unit and a side punching flanging unit, and a feeding driver for driving the two units to relatively move in the feeding direction is arranged on the frame; the side punching flanging unit comprises a side punching flanging mandrel component which can extend into the pipe fitting and is axially arranged along the feeding direction; the two clamping dies of the clamping die unit are provided with a flanging die hole which can be matched with a flanging die section on the stamping die and a punching die hole which can be matched with a punch on the stamping die and has a smaller aperture than the flanging die hole; the feeding driver is also used for driving the pipe fitting and the clamping die unit to move relatively in the feeding direction. The processing and forming machine can improve the quality and the yield of hole drawing and forming, and can be widely applied to the manufacturing fields of aviation, refrigeration, automobiles and the like.
Description
Technical Field
The invention relates to the field of automatic processing equipment, in particular to a pipe fitting processing and forming machine, a side punching flanging device capable of being used for constructing the pipe fitting processing and forming machine and a pipe fitting processing and forming method suitable for the two.
Background
In the pipe processing, it is generally required to perform side-piercing flanging treatment on a pipe after a certain processing treatment so as to obtain a corresponding functional structure, for example, a three-way pipe forming machine disclosed in patent document CN104646559a, which requires to obtain a side-piercing flanging structure at a corresponding position after completing three-way pipe forming.
In order to enable the automatic forming of a side-hole flanging structure on a pipe, applicant discloses in the patent document with publication number CN108043903a pipe forming machine comprising a side-hole flanging device, as shown in the accompanying drawings, comprising a clamping die unit and a side-hole flanging unit; the side punching flanging unit comprises a side punching flanging mandrel assembly which can extend into the pipe fitting, and the side punching flanging mandrel assembly comprises a punching die which is driven by a punching flanging driving mechanism to perform side punching flanging operation on the pipe fitting; the clamping die unit comprises two clamping dies and a clamping die driver for driving the two clamping dies to move relatively along the die clamping direction, and a half die hole capable of clamping the dies to form a flanging die hole is formed in the two clamping dies.
When the equipment is used for carrying out side punching flanging treatment on a plurality of pipes with high hardness and poor toughness, the applicant finds that the problems of high rejection rate of products caused by punching and cracking easily occur. The applicant has found that one of the main reasons for this is that the punch and the flanging share the same die, and the die has a punch with a smaller diameter and a flanging die section with a larger diameter, so that during the punching process, the clearance between the punch and the flanging die hole arranged on the clamping die is usually more than the wall thickness, and the problem of punching cracking easily occurs. In order to solve the technical problem, the applicant firstly uses a punch to pre-punch an inner hole on a pipe fitting and then places the pipe fitting on a side punching flanging device to carry out flanging treatment, and the problem that the hole is pulled out to be inclined due to difficult positioning is found, and the problem that punching cracks still easily occur is also found.
Disclosure of Invention
The invention mainly aims to provide a pipe fitting processing and forming machine which can improve the yield of side punching flanging processing and forming treatment of a pipe fitting;
another object of the present invention is to provide a side-piercing flanging device that can be used to construct the above-described pipe fitting forming machine;
it is still another object of the present invention to provide a pipe fitting forming method suitable for use in the above pipe fitting forming machine and side-piercing flanging device.
In order to achieve the above purpose, the pipe fitting processing and forming machine provided by the invention comprises a frame and a side punching flanging device arranged on the frame; the side punching flanging device comprises a clamping die unit and a side punching flanging unit; a feeding driver is arranged on the frame and used for driving the side punching flanging unit and the clamping die unit to move relatively in the feeding direction; the side punching flanging unit comprises a side punching flanging mandrel assembly which can extend into the pipe fitting and is axially arranged along the feeding direction, and the side punching flanging mandrel assembly comprises a die which is driven by a punching flanging driving mechanism to perform side punching flanging operation on the pipe fitting; the clamping die unit comprises two clamping dies and a clamping die driver for driving the two clamping dies to move, and the two clamping dies are provided with flanging concave die holes which can be matched with flanging die sections on the stamping dies in a die clamping manner; the two clamping dies are provided with punching die holes which can be matched with the punch on the punch die and have a smaller aperture than the flanging die holes; the feeding driver is used for driving the pipe fitting and the clamping die unit to relatively move in the feeding direction.
The punching die holes and the flanging die holes are simultaneously arranged on the die clamping unit, so that two processes of punching and hole drawing and flanging in the side punching and flanging step in the prior art can be respectively formed on the two die holes in the same die clamping unit, and the punching die holes and the punches can be more fit and matched in the punching process, so that the problem of punching cracking is reduced; the front and rear positioning is performed based on the same reference, so that the problems of deflection and the like caused by deviation of punching and hole pulling flanging can be reduced; meanwhile, the direction of punching is the same as the direction of hole pulling flanging, so that the problems of hole pulling cracking, skew and the like caused by burrs in the pipe are avoided.
The punching die holes and the flanging die holes are axially parallel and are arranged side by side, so that rotary positioning in the punching and hole pulling processes can be avoided; the feeding driver comprises a first feeding driver for driving the clamping die unit and the side punching flanging unit to relatively move in the feeding direction, and a second feeding driver for driving the pipe fitting and the clamping die unit to relatively move in the feeding direction. In the case of driving by more than two relatively independent feed drivers, it is convenient to drive different parts to move according to different needs, and the operation is convenient.
More specifically, at least one of the first feeding driver and the second feeding driver can drive the pipe fitting and the side punching flanging unit to relatively move in the feeding direction. Thereby being convenient for material moving when more than two flanging hole structures are formed.
A further proposal is that a first feeding driver is only used for driving the side punching flanging unit to move along the feeding direction relative to the frame, and a second feeding driver is only used for driving the pipe fitting to move relative to the frame; or, the first feeding driver is only used for driving the clamping die unit to move along the feeding direction relative to the frame, and the second feeding driver can be used for driving any one of a pipe fitting and the clamping die unit to move relative to the frame; or, the second feeding driver is only used for driving the clamping die unit to move along the feeding direction relative to the frame, and the first feeding driver can be used for driving any one of the side punching flanging unit and the clamping die unit to move relative to the frame; or, the first feeding driver comprises a second axial feeding driver only used for driving the clamping die unit to move along the feeding direction relative to the frame and a first axial feeding driver only used for driving the side punching flanging unit to move along the feeding direction relative to the frame, and the second feeding driver comprises the second axial feeding driver and a feeding trolley only used for driving the pipe fitting to move along the feeding direction relative to the frame.
The preferred scheme is that the clamping die unit is fixed on the frame, and the clamping die unit is arranged to be kept relatively static with the frame, so that only the side punching flanging unit and/or the pipe fitting are driven to move, namely, the side punching flanging unit and/or the pipe fitting can move independently, and related operation treatment in the processing and forming process is facilitated; a scrap collecting box is arranged at the lower side of the downward arranged female die hole, a mounting groove for the scrap collecting box to be drawn and mounted in a drawer structure is arranged on a base of the clamping die unit, and a passage through hole for scraps to fall into the mounting groove is arranged on the base; the feeding trolley of the second feeding driver comprises a mounting sliding seat which is slidably mounted on the frame through a guide rail sliding block mechanism, a linear displacement output device for driving the mounting sliding seat to slide back and forth along the feeding direction, a feeding main shaft which is rotatably mounted on the mounting sliding seat, a rotary driver for driving the feeding main shaft to rotate, and a pipe clamping mechanism which is mounted on the feeding main shaft; the feeding main shaft is provided with an axial through hole for the side punching flanging core rod assembly to pass through; the first feeding driver comprises a feeding sliding seat slidably mounted on the frame through a guide rail sliding block mechanism and a linear displacement output device for driving the feeding sliding seat to slide back and forth along the feeding direction; the punching flanging driving mechanism comprises a fixed support fixed on the feeding slide seat, a driving support slidably mounted on the feeding slide seat through a guide rail sliding block mechanism, a linear position output device for driving the driving support to move along the feeding direction, an outer sleeve with the rear end fixed on the fixed support seat, and a push-pull rod with the rear end fixed on the driving support seat and slidably sleeved in the outer sleeve.
In order to achieve the other purpose, the side punching flanging device provided by the invention comprises a frame, a clamping die unit, a side punching flanging unit and a feeding driving unit, wherein the clamping die unit, the side punching flanging unit and the feeding driving unit are arranged on the frame, and the feeding driving unit is used for driving the clamping die unit and the side punching flanging unit to relatively move in the feeding direction; the side punching flanging unit comprises a side punching flanging mandrel assembly which can extend into the pipe fitting and is axially arranged along the feeding direction, and the side punching flanging mandrel assembly comprises a die which is driven by a punching flanging driving mechanism to perform side punching flanging operation on the pipe fitting; the clamping die unit comprises two clamping dies and a clamping die driver for driving the two clamping dies to move, and the two clamping dies are provided with flanging concave die holes which can be matched with flanging die sections on the stamping dies in a die clamping manner; and punching die holes which can be assembled to form a die hole with the aperture smaller than that of the flanging die holes and are matched with the punch heads on the punching die are arranged on the two clamping dies.
The punching die holes and the flanging die holes are simultaneously arranged on the die clamping unit, so that two processes of punching and hole drawing and flanging in the side punching and flanging step in the prior art can be respectively formed on the two die holes in the same die clamping unit, and the punching die holes and the punches can be more fit and matched in the punching process, so that the problem of punching cracking is reduced; meanwhile, the direction of punching is the same as the direction of hole pulling flanging, so that the problems of hole pulling cracking, skew and the like caused by burrs in the pipe are avoided.
The punching die holes and the flanging die holes are axially parallel and are arranged side by side, so that rotary positioning in the punching and hole pulling processes can be avoided; the clamping die unit is fixed on the frame; the feed driver can be used for driving the side punching flanging unit to move between the punching station and the flanging station relative to the frame and is positioned on the punching station and the flanging station. The clamping die unit is arranged to be kept relatively static with the frame, and the side punching flanging unit and the pipe fitting side are independently or jointly moved in the transposition process, so that the relative operation treatment in the machining and forming process can be facilitated.
The more specific scheme is that two die hole sets with opposite directions are arranged on the two clamping dies, and each die hole set comprises a flanging die hole and a punching die hole which are used in a matched mode; the feeding driver comprises a feeding sliding seat slidably mounted on the frame through a guide rail sliding block mechanism and a linear displacement output device for driving the feeding sliding seat to slide back and forth along the feeding direction; the punching flanging driving mechanism comprises a fixed support fixed on the feeding slide seat, a driving support slidably mounted on the feeding slide seat through a guide rail sliding block mechanism, a linear position output device for driving the driving support to move along the feeding direction, an outer sleeve with the rear end fixed on the fixed support seat, and a push-pull rod with the rear end fixed on the driving support seat and slidably sleeved in the outer sleeve.
In order to achieve the above object, the present invention provides a pipe fitting forming method including a punching step, a transposition step and a flanging step; the punching step comprises the steps of carrying out punching treatment on a preset position of the pipe fitting from the inner side of the pipe fitting outwards by utilizing the cooperation of a punch of a punching die for side punching flanging and a punching die hole; the flanging step comprises the step of utilizing the cooperation of a side punch Kong Fan side die section of the stamping die and a flanging die hole to outwards extend from the inner side of the pipe fitting, and carrying out flanging treatment on the pipe fitting at the punched hole formed in the punching step; the transposition step comprises the steps of keeping the stamping die and the pipe fitting relatively static in the axial direction of the pipe part to be flanged, and driving the punching die hole, the flanging die hole and the stamping die to relatively move to a position where the stamping die and the flanging die hole are matched to perform flanging treatment.
Based on the stamping die for flanging of the same side, the stamping die hole and the flanging die hole are independently matched to finish the stamping process and the flanging process, so that the stamping die hole and the punch are more matched in a laminating manner in the stamping process, and the problem of stamping cracking is reduced; in the transposition process, only the relative movement in the axial direction is convenient for the positioning of the same reference, so that the problems of deflection and the like caused by the deviation of punching and hole pulling flanging can be reduced; meanwhile, the direction of punching is the same as the direction of hole pulling flanging, so that the problems of hole pulling cracking, skew and the like caused by burrs in the pipe are avoided.
The specific scheme is that the processing and forming method is implemented by adopting the technical scheme described by any pipe fitting processing and forming machine. The relative position between the punching die hole and the flanging die hole is fixedly arranged on the frame; further, the punching die hole and the flanging die hole are arranged on the same clamping die.
Drawings
FIG. 1 is a perspective view of an embodiment 1 of a pipe forming machine according to the present invention;
FIG. 2 is a perspective view of a side piercing flanging device in embodiment 1 of a pipe fitting forming machine of the present invention, with a clamping die driver omitted;
FIG. 3 is a perspective view of a feed carriage of example 1 of a pipe fitting forming machine according to the present invention;
FIG. 4 is a perspective view of a clamping die unit in embodiment 1 of the pipe fitting forming machine of the present invention;
FIG. 5 is a fragmentary axial cross-sectional view of a side-piercing flanging device in embodiment 1 of a pipe forming machine in accordance with the present invention;
FIG. 6 is a schematic view of a pipe formed by example 1 of the pipe forming machine of the present invention;
FIG. 7 is a schematic illustration of the relative positions of embodiment 1 of the pipe forming machine of the present invention prior to a punching operation on a pipe;
FIG. 8 is a schematic view showing the relative positions of a die and a pipe before punching the pipe in accordance with an embodiment 1 of the pipe forming machine of the present invention;
FIG. 9 is an enlarged view of part A of FIG. 7;
FIG. 10 is a schematic view of a pipe forming machine according to example 1 of the present invention for performing a punching operation on a pipe;
FIG. 11 is a schematic view showing the relative positions of a die and a pipe during punching operation of the pipe according to embodiment 1 of the pipe forming machine of the present invention;
FIG. 12 is an enlarged view of part B of FIG. 10;
FIG. 13 is a schematic view showing a process of flanging a pipe in embodiment 1 of a pipe forming machine according to the present invention;
FIG. 14 is a schematic view showing the relative positions of a die and a pipe during flanging operation of the pipe in example 1 of the pipe forming machine according to the present invention;
fig. 15 is a partial enlarged view of C of fig. 13.
Detailed Description
The invention is further described below with reference to examples and figures thereof.
The main conception of the invention is to improve the structure of the clamping die unit in the side punching flanging device so as to separate the punching process from the flanging process, and the processing yield is improved based on the fact that different die sections of the punching and flanging die on the same side are correspondingly matched with the punching die holes and the flanging die holes which are relatively separated. In the following embodiments, mainly describing the structure of the clamping die unit, the structure of the side-punching flanging mandrel assembly can be designed with reference to the existing products.
Pipe fitting machine example 1
Referring to fig. 1 to 15, the pipe fitting processing and forming machine 1 of the present invention comprises a frame 10, a feeding trolley 2 and a side punching flanging device 3 which are installed on the frame.
As shown in fig. 1 and 3, the feed carriage 2 includes two feed rails 21 mounted on the frame 10 so as to be arranged in the Y-axis direction, a mounting slide 23 slidably mounted on the feed rails 21 through a slider 22, a linear displacement output device 24 for driving the mounting slide 23 to slide along the feed rails 21, a feed spindle 25 rotatably mounted on the mounting slide 23, a rotation driver 26 for driving the feed spindle 25 to rotate, and a pipe clamp mechanism 27 mounted on a front end portion of the feed spindle 25. The rotary driver 26 is a rotary motor for driving the feeding spindle 25 to rotate through a transmission mechanism 28, and the transmission mechanism 28 can be a gear transmission mechanism or a synchronous belt transmission mechanism. The linear displacement output device 24 comprises a servo motor 240 and a screw nut mechanism 241, wherein the screw nut is fixedly connected with the bottom side surface of the mounting slide seat 23. The tube clamp mechanism 27 is constructed using a clamping mechanism on the feed spindle of the feed carriage of the prior art product bender.
As shown in fig. 2 and fig. 4 to 15, the side-hole flanging device 3 includes a clamping die unit 4, a side-hole flanging unit 5, and an axial feed driver 6 for driving the clamping die unit 4 and the side-hole flanging unit 5 to move relatively in the Y-axis direction.
As shown in fig. 2 and 5, the side-piercing flanging unit 5 includes a side-piercing flanging mandrel assembly 7 that can extend into the pipe and is axially arranged along the Y-axis. The side-piercing flanging mandrel assembly 7 comprises an outer sleeve 71 fixed on a fixed support 70, a push-pull rod 72 slidably sleeved in the outer sleeve 71, a die 73 slidably arranged along a die guide hole 710 formed in the outer sleeve 71, and a linear displacement driver 74 for driving the push-pull rod 72 to slide reciprocally in the outer sleeve 71. The linear displacement driver 74 includes a bracket 740, a linear displacement output device mounted on the bracket 740, a guide rod 742 arranged along the Y-axis direction, and a mounting slide seat 743 slidably sleeved outside the guide rod 742, where the linear displacement output device may be constructed by using a linear motor, an oil cylinder, an air cylinder, a rotating motor and screw nut mechanism, or a rotating motor and rack and pinion mechanism, etc., and in this embodiment, a rotating servo motor 7400 and screw nut mechanism 741 are used in cooperation; wherein the rear end of the push-pull rod 72 is fixed on the mounting slide 743 through the driving support 744, and the fixing support 70 is fixed on the bracket 740; the screw rod of the screw rod nut mechanism 741 is in transmission connection with the rotor shaft of the servo motor 7400, the screw rod nut is fixedly connected with the mounting slide seat 743, and the screw rod nut mechanism is matched with the servo motor to realize accurate control of the relative displacement between the push-pull rod 72 and the outer sleeve 71.
As shown in fig. 7 to 15, the outer end of the push-pull rod 72 is provided with a push-pull sliding rail 720 which is obliquely arranged relative to the Y-axis, that is, the driving end of the push-pull rod 72 is of a tongue-and-cone rod structure, and the die 73 is provided with sliding grooves matched with the push-pull sliding rail 720, specifically, two symmetrically arranged push-pull sliding rails 720 are arranged on two sides of the end of the push-pull rod 72, the lower end of the die 73 is provided with a U-shaped structure 7301 buckled outside the end of the push-pull rod 72, and an inward concave sliding groove 7302 matched with the push-pull sliding rail 720 is arranged in the U-shaped structure, so that the push-pull die 73 can reciprocate along the die guide hole 710 through the matching of the inward concave sliding groove and the push-pull sliding rail 720. Of course, the operation of the extension driving and the retraction resetting of the die 73 can also be realized by adopting the cooperation of a wedge-shaped surface arranged on the front end part of the push-pull rod 72 and a reset spring sleeved on the die 73.
The die 73 includes a punch 732 and an inner hole flanging die segment 731 for forming side punches in the pipe. Wherein, the outer sleeve 71, the push-pull rod 72 and the linear displacement output device together form a punching flanging driving mechanism in the embodiment, and the punching flanging driving mechanism is used for driving the punch die 73 to perform side punching flanging operation on the pipe.
As shown in fig. 2, the axial feed driver 6 includes two linear guides 61 mounted on the frame 10 in an arrangement along the Y-axis, a feed carriage 63 slidably mounted on the linear guides 61 by a slider 62, and linear displacement output means for driving the feed carriage 63 to slide along the linear guides 61. The linear displacement output device can be constructed by adopting a linear motor, a cylinder, an oil cylinder and a rotating motor to be matched with a screw-nut mechanism, a synchronous belt mechanism and a gear rack mechanism, and specifically comprises a servo motor 640 and a screw-nut mechanism driven by the servo motor through a transmission mechanism; wherein the feed screw nut is fixedly connected with the bottom side of the feed slide 63. The holder 740 is fixedly mounted on the feed slide 63 so as to mount the entire side-piercing turn-up unit 5 on the feed slide 63 while being driven thereby so as to be positionally changeable in the Y-axis direction with respect to the die clamping unit 4.
As shown in fig. 4 and fig. 7 to fig. 15, the clamping unit 4 is fixed on the frame, and includes a first clamping die 41, a second clamping die 42, and a clamping die driver 43 for driving the clamping dies to move, where the clamping die driver 43 may be constructed by using various linear displacement output devices, and may be constructed by using an air cylinder, an oil cylinder, a combination of them and a force amplifying mechanism, etc., and may be configured by driving a single-side clamping die to move, or may be configured by driving both-side clamping dies to move at the same time.
In the present embodiment, the first clamping die 41 and the second clamping die 42 are symmetrically arranged with the joint surface as a symmetry surface. In the following description, the structure of the first clamping die 41 is taken as an example, and two sets of half die hole sets 44 and 45 are provided on the first clamping die 41, and the two sets of half die hole sets are respectively located on two opposite sides of the clamping die cavity 410 and are axially arranged along the Z-axis, that is, each set of plate die sets includes two half die holes that are axially parallel and are arranged side by side; the half die hole set 44 includes a half die hole 441 and a half die hole 442, and the half die hole set 45 includes a half die hole 451 and a half die hole 452. Correspondingly, the second clamping mold 42 is provided with a half-mold hole 461 and a half-mold hole 462 shown in fig. 4.
When the two dies are clamped, the half die holes 441 and the half die holes 461 are clamped to form punching die holes 47 matched with the punches 731 on the dies 73, and the half die holes 442 and the half die holes 462 are clamped to form flanging die holes 48 matched with the flanging die sections 731 on the dies 73. In the present embodiment, the hole diameter of the punching die hole 47 is slightly larger than the radial dimension of the punch 732 and smaller than the hole diameter of the burring die hole 48, which constitute a die hole group located on the upper side of the die clamping cavity in the present embodiment, in which "paired use" is configured as the punching die hole and the burring die hole used in the burring operation on the same side. At the same time, the lower side of the die clamping cavity is also clamped to form a die hole group comprising a punching die hole 47 and a flanging die hole 48, and a chip removing hole 500 with an enlarged aperture is arranged at the outer side of each die hole in a grounding way so as to facilitate chip removal. In this embodiment, the directions of the two die hole sets on the upper and lower sides are opposite, and the directions refer to the relative movement direction of the die in the die hole during the punching or flanging operation; in each group of die holes, the flanging die holes are parallel to the axial direction of the punching die holes and are arranged side by side, namely positioned on the same side, and in the transposition process, the relative rotation transposition operation is not needed.
The control unit of the pipe fitting forming machine 1 comprises a memory and a processor, wherein a computer program is stored in the memory. The specific process of forming the plurality of flanging hole structures 010 on the pipe 01 using the pipe forming machine 1 as shown in fig. 6 includes the steps of executing a computer program in a memory by a processor to implement the steps of:
and a punching step S1, wherein the punch 732 of the side-punching flanging die 73 is matched with the punching die hole 47 to punch the predetermined position of the pipe from the inner side of the pipe outwards.
Specifically, the feeding trolley 2 conveys the pipe 01 to be punched into the die clamping cavity 400 of the die clamping unit 4 in the open state, and controls the die clamping driver 43 to drive the two dies to clamp, at this time, the side-punching flanging mandrel assembly 7 enters the pipe 01 from the rear port of the pipe 01, the positions of the die guide hole 710 and the die 73 are arranged approximately coaxially with the punching female die hole 47 by controlling the axial feed driver 6 and the linear displacement output device, and the push-pull rod 72 makes the punch 732 of the die 73 still not extend out of the die guide hole 710, at this time, the relative positions between the respective positions are shown in fig. 7 to 9.
The linear displacement output is controlled to drive the push-pull rod 72 forward a first distance in the positive direction along the Y-axis to move the punch 732 in the negative direction along the Z-axis to extend out of the die guide hole 710 and to cooperate with the punch socket 47 to punch down the tube wall piece 012 on the side wall of the tube 01 to form a punch 013, the tube wall piece 012 is collected in the chip collection bin 49 and the inner hole flanging die segment 731 is not extended out of the die guide hole 710. For the specific structure of the scrap collecting receptacle 49, the scrap collecting receptacle 49 is disposed at the lower side of the downwardly disposed female die hole, a mounting groove for the scrap collecting receptacle 49 to be drawn and mounted in a drawer structure is provided on the base of the clamping die unit 4, and a passage through hole for the scrap to drop into the mounting groove is provided on the base so as to enable the scrap to be collected in the scrap collecting receptacle 49.
And a transposition step S2, namely keeping the punch die 73 and the pipe relatively static in the axial direction of the pipe part to be flanging, namely in the feeding direction, and driving the punch die hole 47, the flanging die hole 48 and the punch die 73 to relatively move to a position where the punch die 73 and the flanging die hole 48 are matched to perform flanging treatment.
The linear displacement output is controlled to drive the push-pull rod 72 to move the first distance in the negative direction along the Y-axis, so that the punch 732 of the die 73 moves positively along the Z-axis into the retracting die guide hole 710.
The positions of the die guide hole 710, the die 73 and the punched hole 013 are arranged approximately coaxially with the flanging die hole 48 by controlling the axial feed driver 6 to drive the side-punching flanging mandrel assembly 7 to move forward along the Y-axis for a second distance and controlling the feed carriage 2 to drive the pipe 01 to move forward along the Y-axis for the aforementioned second distance.
If the paired flanging die holes are not parallel to the punching die holes and are arranged side by side, a structure capable of driving the side-punching flanging mandrel assembly 7 to rotate is required to be added, namely, a structure similar to a feeding main shaft on a feeding trolley is adopted, and at the moment, the side-punching flanging mandrel assembly 7 and the pipe fitting 01 are required to be driven to rotate circumferentially.
And a flanging step S3, namely utilizing the cooperation of the side punch Kong Fan side die segments 731 of the punch 73 and the flanging die holes 48 to carry out flanging treatment on the pipe at the punching 013 formed in the punching step from the inner side of the pipe outwards.
The linear displacement output device is controlled to drive the push-pull rod 72 to positively move forwards along the Y axis for a third distance, so that the die 73 moves negatively along the Z axis until the inner hole flanging die segment 731 of the die is extended out of the die guide hole 710, and is matched with the flanging die hole 48 to punch out the flanging structure 010 at the periphery of the punched hole 013.
The punching step S1, the transposition step S2 and the flanging step S3 are repeated, a plurality of flanging hole structures 010 are formed on the pipe fitting 01, and when the flanging structure 010 is required to be formed at different positions in the circumferential direction of the pipe fitting 01, the pipe fitting 01 can be rotated by a predetermined angle by rotating the feeding main shaft 25, so that position switching is realized. In this embodiment, the feeding trolley 2 can drive the pipe fitting 01 to rotate 360 degrees, and can punch and pull holes at any position in the circumferential direction of the pipe fitting.
I.e. the feed trolley can be used at least for driving the tubular element 01 relative to the frame 10 between the punching station and the flanging station and positioned at both stations, from where the tubular wall area to be processed is located in correspondence of the punching die hole 47 and the flanging die hole 48. While the axial feed drive 6 can be used at least to drive the side-piercing flanging unit 5 relative to the frame 10 between the piercing and flanging stations and positioned at both stations so that, in both stations, the dies 73 are arranged coaxially with the piercing and flanging die holes 47, 48, respectively, and facing the same direction. The concave-convex die fit clearance is good when punching, and the pipe punches a hole and does not fracture, and the pipe is tight not unclamped all the time in the pay-off process, and the feeding is to drawing hole station, and positioning accuracy is high, and the drawing hole can not fracture and crooked.
Wherein, the feeding trolley 2 forms a second feeding driver, the axial feeding driver 6 forms a first feeding driver in the embodiment, and the two feeding drivers together form the feeding driver in the embodiment, so that the side punching flanging mandrel assembly 7 and the pipe 01 can be driven to move relatively, and meanwhile, the pipe 01 and the clamping die unit can move relatively, and the side punching flanging mandrel assembly 7 and the clamping die unit 4 can also move relatively through the cooperation of the independent first feeding driver and the second feeding driver.
Pipe fitting Forming machine example 2
As a description of embodiment 2 of the pipe forming machine of the present invention, only the differences from embodiment 1 of the pipe forming machine described above will be described below.
In the embodiment, the feeding trolley does not need to rotate the pipe fitting, so that only the clamping claw and the feeding driving unit for driving the clamping claw to reciprocate along the feeding direction relative to the frame are needed; the feeding driving unit comprises a linear guide rail which is arranged on the frame along the feeding direction, a mounting sliding seat which is slidably arranged on the linear guide rail through a sliding block, and a linear displacement output device for driving the mounting sliding seat to move along the linear guide rail; the linear displacement output device is constructed by adopting a structure of a rotary driving motor and a gear rack, the gear is sleeved on a rotor shaft of the rotary driving motor, and the rack is fixedly arranged on the frame along the feeding direction. The clamping claw is constructed by adopting a clamping die, and particularly adopts a transverse opening and closing clamping die or an upper and lower opening and closing clamping die.
Pipe fitting machine example 3
As a description of embodiment 3 of the pipe forming machine of the present invention, only the differences from embodiment 1 of the pipe forming machine described above will be described below, and mainly the structure of the feed actuator will be improved.
Referring to the structure shown in fig. 1 to 15, in the present embodiment, the position of the side-piercing turn-ups and the pipe 01 on the frame 10 in the feeding direction, i.e., in the Y-axis direction, is maintained, and the feeding driver is only used to drive the die clamping unit 4 to move in the feeding direction relative to the frame 10.
In the use process, (1) sleeving the pipe fitting 01 to be processed outside the outer sleeve 71 from the side of the clamping die unit 4, namely feeding the pipe fitting from the side of the clamping die unit 4 away from the feeding trolley 2, and after being clamped by the feeding trolley, driving the clamping die unit 4 to move to a position where the punching female die hole 47 is matched with the punching die 73, and closing the die to perform punching operation; (2) After the die clamping is opened, the die clamping unit 4 is driven to move to a position where the upper flanging die hole 48 is matched with the die 73 along the feeding direction, and the die is subjected to flanging operation. And the flanging hole structure can be formed at different positions in the circumferential direction of the pipe fitting 01 by rotating the pipe fitting 01.
Pipe fitting machine example 4
As a description of embodiment 4 of the pipe forming machine of the present invention, only the differences from embodiment 1 of the pipe forming machine described above will be described below, and mainly the structure of the feed actuator will be improved.
For the specific structure of the feeding driver, referring to the structure shown in fig. 1 to 15, a second axial feeding driver capable of driving the clamping die unit 4 to move relative to the frame 10 is added on the basis of the embodiment 1, that is, the first axial feeding driver 6 and the feeding trolley 2 together with the second axial feeding driver form the feeding driver in the embodiment. The second axial feeding driver is mainly used for transposition in the same group of punching working procedures and flanging working procedures in the working process, so that the feeding driving error between the first axial feeding driver and the feeding trolley can be avoided, the machining precision is improved, and the control and the positioning are convenient.
Wherein the first axial feed drive 6 together with the second axial feed drive constitutes the first feed drive in this embodiment, such that the relative movement between the side piercing flanging unit 5 and the die clamping unit 4 can be actuated by actuating at least one of the die clamping unit 4 and the side piercing flanging unit relative to the frame 10. The feeder wagon 2 together with the second axial feed drive constitutes the second feed drive in this embodiment, so that the relative movement between the pipe and the gripping module 4 can be driven by driving at least one of the gripping module 4 and the pipe to move relative to the frame 10.
Pipe fitting machine example 5
As a description of embodiment 5 of the pipe forming machine of the present invention, only the differences from embodiment 4 of the pipe forming machine described above will be described below, and mainly the structure of the feed actuator will be improved.
As for the specific structure of the feed driver, referring to the structure shown in fig. 1 to 15, the first axial feed driver 6 is omitted, and at this time, the relative movement between the side punching flanging device and the die clamping unit is driven by driving the die clamping unit 4 to move relative to the frame 10 through the second axial unit, that is, the second axial feeder constitutes the first feed driver in the present embodiment; and the second axial feed drive constitutes the second feed drive in this embodiment together with the feed carriage. In the transposition step, only the clamping die unit 4 needs to be moved, and the pipe fitting 01 and the clamping die unit 4 are simultaneously moved when different flanging hole structures are machined and molded.
Pipe fitting machine example 6
As a description of embodiment 6 of the pipe forming machine of the present invention, only the differences from embodiment 1 of the pipe forming machine described above will be described below, and mainly the structure of the feed actuator will be improved.
For the specific structure of the feeding driver, referring to the structure shown in fig. 1 to 15, the feeding trolley is replaced with a pipe clamp clamping die which is static relative to the frame 10 or a feeding trolley which can only drive the pipe fitting 01 to rotate is kept, at this time, the second axial feeder forms the second feeding driver in the embodiment by driving the clamping die unit 4 to move relative to the frame 10 through the second axial unit so as to drive the pipe fitting 01 to move relative to the clamping die unit 4; and the second axial feed drive together with the first axial feed drive constitutes the first feed drive in this embodiment. In the transposition step, only the clamping die unit 4 is required to be moved, and the side punching flanging unit and the clamping die unit 4 are simultaneously moved when different flanging hole structures are formed.
In the above six embodiments, except for the embodiment 3, other embodiments can process and form more than two flanging hole structures based on the clamping of single pipe materials; in embodiments 1, 2 and 4, either one of the first and second feed drivers is capable of driving relative movement between the pipe and the side-piercing flanging unit. For the structure of the second axial feed drive, reference can be made to the structure of the first axial feed drive and the axial feed section of the feed carriage.
Side punching flanging device and pipe fitting processing and forming machine embodiment
In the description of the above embodiments of the pipe fitting forming machine, the embodiments of the side punching flanging device and the pipe fitting forming method of the present invention have been described, and will not be described herein.
The cross-sectional structure of the punch can be selected to be an elliptical structure according to the requirement, and the flanging die hole is also configured to be an elliptical structure, and the aperture is configured to be the largest dimension in the aperture direction of the long axial length of the ellipse. For the "fit" relationship between the punch and the punch die hole, i.e. the size of the space between the punch and the punch die hole, the matching is specifically performed according to the material of the physical parameters such as the punched hardness and toughness, and the like, the wall thickness of the tube can be selected to be less than twice, more preferably less than one time, and even more preferably less than 0.5 time.
In the above embodiments, when the processor in the control unit executes the computer program stored in the memory, it can be realized that the feeding driver is controlled to drive the die clamping unit to move in the feeding direction relative to the pipe fitting and the side hole flanging unit, so as to perform station switching between the hole punching station and the flanging station.
In the above embodiments, the punching die hole and the flanging die hole are both disposed on the same pair of clamping dies, that is, in the above embodiments, the clamping die unit includes only one pair of clamping dies; of course, the die cavity may be disposed on the first pair of clamping dies, and the flanging cavity may be disposed on the second pair of clamping dies, that is, the clamping die unit includes two pairs of clamping dies, at this time, both pairs of clamping dies may be fixed on the frame, that is, in the case of embodiment 1, or the two pairs of clamping die units may be synchronously driven to synchronously perform the constant-speed feeding movement by using the same second axial feeding driver, for example, in the cases of embodiments 3 to 6, although an independent second axial feeding driver may be adopted for each pair of clamping dies for feeding driving.
The main conception of the invention is to improve the structure of the clamping die unit in the side punching flanging device, namely, to arrange the punching die holes and the flanging die holes which are independently arranged so as to separate the punching process from the flanging process, thereby improving the processing yield. The structure of the feeding trolley, the clamping die unit 4 and the side-punching flanging mandrel assembly 7 according to the present concept is not limited to the structure disclosed in the above embodiment, but is only a part of the embodiments, and various obvious variations are possible without departing from the present concept.
Claims (10)
1. A pipe fitting processing and forming machine comprises a frame and a side punching flanging device arranged on the frame; the side punching flanging device comprises a clamping die unit and a side punching flanging unit; a feeding driver is arranged on the frame and used for driving the clamping die unit and the side punching flanging unit to move relatively in the feeding direction;
the side punching flanging unit comprises a side punching flanging mandrel assembly which can extend into the pipe fitting and is axially arranged along the feeding direction, and the side punching flanging mandrel assembly comprises a punching die driven by a punching flanging driving mechanism to perform side punching flanging operation on the pipe fitting; the die clamping unit comprises two die clamping dies and a die clamping driver for driving the die clamping dies to move, and the two die clamping dies are provided with flanging die holes which can be matched with the flanging die sections on the die clamping dies in a die clamping manner; the method is characterized in that:
the two clamping dies are provided with punching die holes which can be matched with the punch on the stamping die and have a smaller aperture than the flanging die holes; the punching die holes are parallel to the axial direction of the flanging die holes and are arranged side by side;
the feeding driver is also used for driving the pipe fitting and the clamping die unit to move relatively in the feeding direction.
2. The pipe forming machine of claim 1, wherein:
the feeding driver comprises a first feeding driver for driving the clamping die unit and the side punching flanging unit to relatively move in the feeding direction and a second feeding driver for driving the pipe fitting and the clamping die unit to relatively move in the feeding direction;
and chip removal holes with enlarged apertures are formed in the outer sides of the flanging die holes and the punching die holes in a grounding mode.
3. The pipe forming machine of claim 2, wherein:
at least one of the first feed driver and the second feed driver can drive the pipe fitting and the side punching flanging unit to relatively move in the feeding direction.
4. A pipe forming machine as claimed in claim 3, wherein:
the first feeding driver is only used for driving the side punching flanging unit to move along the feeding direction relative to the frame, and the second feeding driver is only used for driving the pipe fitting to move along the feeding direction relative to the frame.
5. A pipe forming machine according to any one of claims 2 to 4, wherein:
the clamping die unit is fixedly fixed on the frame relative to the frame;
a scrap collecting box is arranged at the lower side of the downward concave die hole, a base of the clamping die unit is provided with a mounting groove for the scrap collecting box to be pulled and mounted in a drawer mode, and the base is provided with a passage through hole for scraps to fall into the mounting groove;
the second feeding driver is a feeding trolley, and the feeding trolley comprises a mounting sliding seat which is slidably mounted on the frame through a guide rail sliding block mechanism, a linear displacement output device for driving the mounting sliding seat to slide back and forth along the feeding direction, a feeding main shaft which is rotatably mounted on the mounting sliding seat, a rotary driver for driving the feeding main shaft to rotate, and a pipe clamping mechanism which is mounted on the feeding main shaft; the feeding main shaft is provided with an axial through hole for the side punching flanging core rod assembly to pass through;
the first feeding driver comprises a feeding sliding seat slidably mounted on the frame through a guide rail sliding block mechanism and a linear displacement output device for driving the feeding sliding seat to slide back and forth along the feeding direction; the punching flanging driving mechanism comprises a fixed support fixed on the feeding slide seat, a driving support slidably arranged on the feeding slide seat through a guide rail sliding block mechanism, and a linear displacement output device for driving the driving support to move along the feeding direction; the side punching flanging core rod assembly comprises an outer sleeve with the rear end fixed on the fixed support and a push-pull rod with the rear end fixed on the driving support and slidably sleeved in the outer sleeve.
6. The side punching flanging device comprises a frame, a clamping die unit, a side punching flanging unit and a feeding driver, wherein the clamping die unit, the side punching flanging unit and the feeding driver are arranged on the frame, and the feeding driver is used for driving the side punching flanging unit and the clamping die unit to relatively move in the feeding direction;
the side punching flanging unit comprises a side punching flanging mandrel assembly which can extend into the pipe fitting and is axially arranged along the feeding direction, and the side punching flanging mandrel assembly comprises a punching die driven by a punching flanging driving mechanism to perform side punching flanging operation on the pipe fitting; the die clamping unit comprises two die clamping dies and a die clamping driver for driving the die clamping dies to move, and the two die clamping dies are provided with flanging die holes which can be matched with the flanging die sections on the die clamping dies in a die clamping manner; the method is characterized in that:
the two clamping dies are provided with punching die holes which can be matched with the punch on the stamping die and have a smaller aperture than the flanging die holes; the punching die holes are parallel to the axial direction of the flanging die holes and are arranged side by side.
7. The side-piercing flanging device of claim 6, wherein:
the clamping die unit is fixed on the frame; the feeding driver at least can be used for driving the side punching flanging unit to move between a punching station and a flanging station relative to the frame and is positioned on the two stations;
and chip removal holes with enlarged apertures are formed in the outer sides of the flanging die holes and the punching die holes in a grounding mode.
8. The side-piercing flanging device as defined in claim 7, wherein:
two groups of concave die hole groups with opposite directions are arranged on the two clamping dies, and each concave die hole group comprises a flanging concave die hole and a punching concave die hole which are used in a matched mode;
the feeding driver comprises a feeding sliding seat slidably mounted on the frame through a guide rail sliding block mechanism and a linear displacement output device for driving the feeding sliding seat to slide back and forth along the feeding direction; the punching flanging driving mechanism comprises a fixed support fixed on the feeding slide seat, a driving support slidably arranged on the feeding slide seat through a guide rail sliding block mechanism, and a linear displacement output device for driving the driving support to move along the feeding direction; the side punching flanging core rod assembly comprises an outer sleeve with the rear end fixed on the fixed support and a push-pull rod with the rear end fixed on the driving support and slidably sleeved in the outer sleeve.
9. The pipe fitting processing and forming method is characterized by comprising a punching step, a transposition step and a flanging step;
the punching step comprises the steps of carrying out punching treatment on a preset position of the pipe fitting from the inner side of the pipe fitting outwards by utilizing the cooperation of a punch of a side-punching flanging die and a punching die hole;
the flanging step comprises the step of utilizing the cooperation of a side punch Kong Fan side die section of the stamping die and a flanging die hole to outwards extend from the inner side of the pipe fitting, and carrying out flanging treatment on the pipe fitting at the punched hole formed in the punching step;
the transposition step comprises the steps of keeping the punching die and the pipe fitting relatively static at least in the axial direction of the pipe part to be flanged, and driving the punching die hole, the flanging die hole and the punching die to relatively move to a position where the punching die and the flanging die hole are matched to perform flanging treatment.
10. The pipe fitting forming method according to claim 9, wherein:
the pipe fitting forming method is performed using the pipe fitting forming machine according to any one of claims 1 to 5.
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| CN201910144565.XA CN109926492B (en) | 2019-02-27 | 2019-02-27 | Pipe fitting processing and forming machine, processing and forming method and side punching flanging device |
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| CN112620464B (en) * | 2019-09-09 | 2022-09-20 | 浙江长兴和良智能装备有限公司 | Special-shaped pipe clamping machine head, feeding system, spinning method and spinning system |
| CN113523093B (en) * | 2021-07-14 | 2023-08-25 | 中山森特能源科技有限公司 | Synchronous double-stamping type flanging equipment for round holes of inner containers of solar heat collecting tubes |
| CN115156401B (en) * | 2022-09-08 | 2022-11-18 | 徐州恒乾紧固件制造有限公司 | Metal gasket stamping forming equipment for fastener |
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