Automatic forming device and forming method for threaded pipe

Abstract

The present application relates to a kind of thread pipe automatic forming device and forming method, the thread pipe is made of degradable plastic, the forming device includes: support seat;Pipe material supporting mechanism, for at least along the pipe material radial support the pipe material;Pay-off mechanism, is provided with for placing wire material storage line portion, and the wire material is introduced from the storage line portion to the pipe material lead-in portion;Guiding mechanism, for guiding the pay-off mechanism moves along the pipe material axial direction;Shaping mechanism, for along the pipe material axial compression the pipe material;Driving mechanism, for driving the pipe material supporting mechanism carries the pipe material and rotates around the pipe material axle, simultaneously driving the pay-off mechanism moves along the pipe material axial direction and covers the pipe material axial length range, to be suitable for the wire material is wound on the pipe material surface;Replacement mechanism, including for replacing pipe material supporting mechanism Support replacement part or for replacing screw rod screw rod replacement part.The present application can guarantee the precision of thread pipe forming.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of plastic forming, in particular to a threaded tube automatic forming device and forming method. BACKGROUND

[0002] In the prior art, there are two schemes for the thread forming of the pipe material: one is through die extrusion forming, and the other is through cutter grinding machining. However, in the medical field, especially in the field of medical implants, because the material of the pipe material is degradable plastic, its special material properties cannot be shaped by a die, nor can it be machined by a cutter. Therefore, both forming schemes are not suitable for the thread forming of the flexible pipe material in the medical field.

[0003] In the medical field, the preparation of threaded pipes often adopts the following method: using the principle of pouring, a tubular mold is prepared, and silica gel raw materials are injected into the mold. After the raw materials are solidified and formed, the holes are made and the inner wall is etched. However, the thread pipe formed by pouring cannot accurately control the thread, and air may not be completely discharged, causing air holes in the thread pipe, affecting the quality of the thread pipe. Another method of forming a threaded pipe is to wrap a wire around the pipe to form a thread. This preparation method cannot control the winding force and cannot guarantee that the pipe will not be damaged during winding.

[0004] Both preparation methods cannot accurately control the thread spacing, so the accuracy of the thread forming of the threaded pipe cannot be guaranteed. Moreover, due to the inability to control the force, the original pipe material may be damaged due to winding, so that the performance of the threaded pipe does not meet the use requirements, and even the threaded pipe is damaged. Therefore, both preparation methods are not suitable for large-scale production of threaded pipes. SUMMARY

[0005] The present application aims to solve at least one of the problems in the prior art. To this end, the present application proposes a threaded tube automatic forming device and forming method, which facilitates large-scale production of different models of threaded tubes.

[0006] According to an embodiment of the present application, a threaded tube automatic forming device is provided, the threaded tube is made of degradable plastic, the forming device comprises a support base, a tube supporting mechanism for supporting the tube at least in a radial direction, a wire feeding mechanism provided with a wire storage part for storing the wire and a wire leading part for leading the wire from the wire storage part to the tube, a shaping mechanism for compressing the tube in an axial direction of the tube, a driving mechanism for driving the tube supporting mechanism to rotate the tube around a tube axis, and driving the wire feeding mechanism to move along the tube axis and cover a length range of the tube axis, so as to wind the wire on the surface of the tube, and a replacing mechanism comprising a supporting replacing part for replacing the tube supporting mechanism or a screw replacing part for replacing the screw.

[0007] In some embodiments, the supporting replacing part comprises a pair of supporting conversion discs opposite to each other and rotating around a first axis parallel to the axial direction of the tube and arranged on the support base, a plurality of supporting mounting holes are arranged on the supporting conversion discs for supporting a plurality of the tube supporting mechanisms, the plurality of supporting mounting holes are arranged equidistantly around the first axis, so as to rotate the supporting conversion discs around the first axis, so that any tube supporting mechanism corresponding to the supporting mounting hole can be associated with the driving mechanism, while the rest of the tube supporting mechanisms corresponding to the supporting mounting holes are not associated with the driving mechanism.

[0008] Further, the supporting replacing part further comprises a first pin group for realizing the association, so as to drive the tube supporting mechanism to rotate around the tube axis by the driving mechanism.

[0009] Further, the first pin group comprises a first main pin connecting the driving mechanism and the tube supporting mechanism, a first driving pin fixing the first main pin and the driving mechanism, and a first tube pin fixing the first main pin and the tube supporting mechanism.

[0010] In some embodiments, the supporting replacing part further comprises a first fixing member for fixing the supporting conversion disc stationary on the support base when the driving mechanism drives the tube supporting mechanism.

[0011] In some embodiments, the screw replacing part comprises a pair of screws opposite to each other and rotating around a second axis parallel to the axial direction of the tube and arranged on the support base, a plurality of screw mounting holes are arranged on the screw conversion discs for supporting a plurality of the screws, the plurality of screw mounting holes are arranged equidistantly around the second axis, so as to rotate the screw conversion discs around the second axis, so that any screw corresponding to the screw mounting hole can be associated with the driving mechanism, while the rest of the screws corresponding to the screw mounting holes are not associated with the driving mechanism.

[0012] Further, the screw rod replacement part further comprises a second pin group for realizing the association, so as to drive the screw rod to rotate and drive the pay-off mechanism to move along the pipe axis.

[0013] Further, the second pin group comprises a second main pin connecting the driving mechanism and the screw rod, a second driving pin fixing the second main pin and the driving mechanism, and a second pipe pin fixing the second main pin and the screw rod.

[0014] In some embodiments, the screw rod replacement part further comprises a second fixing member for fixing the supporting conversion disc to be stationary on the support seat when the driving mechanism drives the screw rod to rotate.

[0015] In some embodiments, the driving mechanism comprises a driving input device, a first driving wheel and a second driving wheel, the driving input device drives the first driving wheel and the second driving wheel to rotate; the first driving wheel is connected with the pipe supporting mechanism, so as to drive the pipe supporting mechanism to rotate around the pipe axis, and the second driving wheel is connected with the screw rod, so as to drive the screw rod to rotate.

[0016] The automatic thread pipe forming device provided by the application realizes the wire winding process of the pipe by synchronously moving the pay-off mechanism and the pipe supporting mechanism, winding the wire in the wire storage part of the pay-off mechanism through the lead wire part, and then winding the wire on the pipe on the pipe supporting mechanism.

[0017] Specifically, when the driving mechanism drives the pipe supporting structure to rotate around the pipe axis, the movement is also transmitted to the pay-off mechanism, that is, the rotational movement of the pipe supporting structure around the pipe axis is associated with the movement of the pay-off mechanism along the pipe axis, and the ratio of the angular velocity of the rotational movement around the pipe axis to the linear velocity of the movement along the pipe axis is fixed. According to different ratios, the speed ratio between the rotation of the pipe supporting structure around the pipe axis and the movement of the pay-off mechanism along the pipe axis can be controlled, and the gap width of the thread can be accurately controlled by controlling the speed ratio. That is, when producing thread pipes, different values of the thread gap can be selected by only changing the speed ratio of the rotation around the pipe axis and the movement along the axis, so that the thread gap of the thread pipe is more uniform and accurate.

[0018] The guiding mechanism is arranged along the axial length of the pipe material at least equal to the pipe material supporting structure, and the wire laying mechanism can move along the guiding mechanism in the axial direction of the pipe material. Before the winding step, the wire laying mechanism is arranged on the guiding mechanism and corresponds to one end of the pipe material placed on the pipe material supporting mechanism, the free end of the wire in the wire storage part is led out from the wire leading part and fixed on the pipe material placed on the pipe material supporting mechanism. It can be understood that the pipe material placed on the pipe material supporting mechanism can be arranged at one end of the pipe material supporting mechanism or at the middle part of the pipe material supporting mechanism.

[0019] During the winding step, the driving mechanism drives the pipe material supporting mechanism to rotate around the axial direction of the pipe material, and drives the wire laying mechanism to move along the axial direction of the pipe material. When the wire laying mechanism moves, the wire in the wire storage part is laid out through the wire leading part. Since the wire laying mechanism moves along the axial direction of the pipe material and the pipe material rotates around the axial direction of the pipe material under the driving of the pipe material supporting mechanism, the wire laying mechanism can uniformly wind the wire on the pipe material to form a thread line. At the same time, since the rotating speed of the pipe material supporting mechanism around the axial direction of the pipe material and the moving speed of the wire laying mechanism along the axial direction have a fixed ratio, the ratio value between the two speeds can be controlled to control the thread gap distance of the thread pipe, and the thread gap can be accurately controlled.

[0020] When producing a thread pipe with a thread pitch, the screw rod replacement part replaces a screw rod without a thread pitch, changes the ratio of the moving speed of the wire laying mechanism along the axial direction of the pipe material to the rotating speed of the pipe material supporting mechanism around the axial direction of the pipe material, so that the thread gap of the produced thread pipe is changed. Different thread pipes can be produced on the same equipment, and the cost of preparing multiple production equipment due to different production sizes can be reduced.

[0021] After the winding step is completed, the forming step of the present application is performed, the forming mechanism is arranged at one end of the pipe material supporting mechanism, and the pipe material after the winding step is completed is extruded to the other end of the pipe material supporting mechanism to complete the forming process of the thread pipe. It can be understood that the thread gap distance of the thread pipe can also be controlled by changing the extrusion degree of the forming mechanism.

[0022] When producing thread pipes with different radial sizes, the supporting replacement part replaces pipe material supporting parts with different radial sizes, so that different thread pipes can be produced on the same equipment, and the cost of preparing multiple production equipment due to different production sizes can be reduced.

[0023] On the other hand, the embodiment of the present application also provides a thread pipe automatic forming method, the thread pipe is made of degradable plastic, which comprises:

[0024] The pipe material supporting mechanism is used to support the pipe material in the radial direction of the pipe material;

[0025] Using the wire releasing mechanism, the wire is placed and led out to the pipe;

[0026] Using the driving mechanism, the pipe supporting mechanism is driven to rotate the pipe around the pipe axis, and the wire releasing mechanism is driven to move along the pipe axis and cover the pipe axial length range, so as to adapt to the wire winding on the pipe surface;

[0027] Using the replacement mechanism, the pipe supporting mechanism is replaced through the supporting replacement part, and / or the lead screw is replaced through the lead screw replacement part.

[0028] As described above, by providing a pipe supporting mechanism capable of rotating around the pipe axis under the driving of the driving mechanism, and a wire releasing mechanism capable of moving along the pipe axis under the driving of the driving mechanism, both of which are driven by the driving mechanism to perform the wire winding step on the pipe, the ratio between the rotation speed of the pipe supporting mechanism and the moving speed of the wire releasing mechanism is constant during the wire winding step, so that the wire can be uniformly wound on the pipe. At the same time, by adjusting the speed ratio between the two, specifically by replacing the lead screw with different thread gaps through the lead screw replacement part in the replacement mechanism, the control of the thread gap distance can be realized. The forming mechanism provided at one end of the pipe supporting mechanism extrudes the pipe from one end of the pipe supporting mechanism to the other end of the pipe supporting mechanism, so that the pipe with wound wire is extruded and formed, and finally a threaded pipe is formed. By controlling the extrusion degree of the forming mechanism, the length of the threaded pipe and the thread gap distance can be controlled. By replacing the pipe supporting mechanism with different radial sizes through the supporting replacement part, the production of threaded pipes with different radial sizes can be realized. The threaded pipe automatic forming device provided by the present application can ensure the accuracy of threaded pipe forming, and can be flexibly changed according to the needs, can produce threaded pipes of different models, and can reduce the complexity and cost of production operation. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 A threaded pipe automatic forming device provided by an embodiment of the present application is shown in the schematic diagram;

[0031] Figure 2 A threaded pipe automatic forming device provided by an embodiment of the present application is shown in the schematic diagram;

[0032] Figure 3A threaded pipe automatic forming device support frame shaping mechanism part split view is provided for the embodiment of the present application;

[0033] Figure 4 A threaded pipe automatic forming device support frame driving mechanism part split view is provided for the embodiment of the present application;

[0034] Figure 5 A threaded pipe automatic forming device side view is provided for the embodiment of the present application;

[0035] Figure 6 A threaded pipe automatic forming device one embodiment schematic view is provided for the embodiment of the present application;

[0036] Figure 7 A threaded pipe automatic forming device support seat part schematic view is provided for the embodiment of the present application.

[0037] Reference signs:

[0038] Threaded pipe automatic forming device 100;Support seat 1;Pipe material supporting mechanism 2;Supporting rod 21;First fixing member 22;Second fixing member 23;Pay-off mechanism 3;Wire storage part 31;Wire guide part 32;Shaping mechanism 4;Extension device 41;Guide member 411;Extrusion member 412;Driving mechanism 5;First driving gear 52;Second driving gear 53;Lead screw 54;Replacement mechanism 7;Pipe material replacement part 71;Support conversion disc 711;Support mounting hole 712;First pin group 713;First main pin 714;First driving pin 715;First pipe material pin 716;Lead screw replacement part 72;Lead screw conversion disc 721;Lead screw mounting hole 722;Second pin group 723;Second main pin 724;Second driving pin 725;Second pipe material pin 726. DETAILED DESCRIPTION

[0039] The description of the embodiments of the present application should be combined with the corresponding drawings, which should be considered as a part of the complete description. In the drawings, the shape or thickness of the embodiments can be exaggerated and simplified or convenient. Furthermore, the parts of the structures in the drawings will be described separately, and it should be noted that the elements not shown or not described in the drawings are in the form known by those skilled in the art.

[0040] The description of the embodiments herein, any reference to direction and orientation, is only for the convenience of description, and cannot be understood as any limitation on the scope of protection of the present application. The following description of the preferred embodiments will involve the combination of features, which may exist independently or in combination, and the present application is not particularly limited to the preferred embodiments. The scope of the present application is defined by the claims.

[0041] The embodiment provides a threaded pipe automatic forming device 100 according to the embodiment of the application, which comprises a supporting seat 1, a pipe supporting mechanism 2 used for supporting a pipe along a radial direction of the pipe, a wire feeding mechanism 3 provided with a wire storage part 31 used for storing a wire and a wire leading part 32 used for leading the wire from the wire storage part 31 to the pipe, a guiding mechanism used for guiding the wire feeding mechanism 3 to move along an axial direction of the pipe, a shaping mechanism 4 used for compressing the pipe along the axial direction of the pipe, a driving mechanism 5 used for driving the pipe supporting mechanism 2 to rotate the pipe around a pipe axis and driving the wire feeding mechanism to move along the axial direction of the pipe and cover an axial length range of the pipe by means of a screw rod so as to wind the wire on the surface of the pipe, and a replacing mechanism 7 comprising a supporting replacing part 71 used for replacing the pipe supporting mechanism or a screw rod replacing part 72 used for replacing the screw rod 54.

[0042] As shown in Figure 1 , the pipe is sleeved on the pipe supporting mechanism 2 and can rotate around the pipe axis following the pipe supporting mechanism 2 under the driving of the driving mechanism 5. Figure 2 As shown in , the wire feeding mechanism 3 is provided with the wire storage part 31 used for storing the wire, wherein the wire storage part 31 can be a bobbin, and the wire storage part 31 rotates following the movement of the wire feeding mechanism 3 to feed the wire wound on the wire storage part 31. The wire leading part 32 is arranged on the side of the wire feeding mechanism 3 close to the pipe supporting mechanism 2 and is used for leading the free end of the wire wound on the wire storage part 31 from the wire storage part 31 to the pipe. The wire leading part 32 can be a wire leading hole through which the wire is led out.

[0043] In some embodiments, the wire storage part 31 comprises two holding members and a spring, the bobbin is arranged between the two holding members, and the two holding members are pressed tightly by the spring to support the bobbin.

[0044] In some embodiments, the wire leading part 32 is a wire leading hole through which the free end of the wire is led out, and further, a thin tube extending out of the wire leading hole is arranged in the wire leading hole, and the free end of the wire is led out through the thin tube.

[0045] The wire feeding mechanism 3 is arranged correspondingly to the pipe supporting structure and can move along the axial direction of the pipe under the driving of the driving mechanism 5, rotate around the pipe axis through the pipe supporting structure and move along the axial direction of the pipe, so that the wire wound on the wire storage part 31 of the wire feeding mechanism 3 is wound on the pipe on the pipe supporting mechanism 2.

[0046] The guiding mechanism is arranged to be parallel to the axial direction of the pipe, is used for supporting the wire feeding mechanism 3 in the radial direction and enables the wire feeding mechanism 3 to move along the axial direction of the pipe along the guiding mechanism.

[0047] The shaping mechanism 4 is arranged at one end of the pipe supporting structure. After the wire is wound on the pipe by the cooperation of the pipe supporting structure and the pay-off mechanism 3, the shaping mechanism 4 moves to the other end of the pipe by pushing one end of the pipe, and then the pipe is pressed and shaped. The shaping mechanism 4 can be driven by a gas pump, a motor or other driving devices to shape the pipe.

[0048] The driving mechanism 5 can be electrically driven or manually driven. When the electric driving is selected, a motor, a gas cylinder or other driving devices can be selected. When the manual driving is selected, a manual crank or other manual driving devices can be selected.

[0049] Specifically, when the driving mechanism 5 drives the pipe supporting structure to rotate around the pipe axis, the movement is also transmitted to the pay-off mechanism 3. That is, the rotational movement of the pipe supporting structure around the pipe axis is associated with the movement of the pay-off mechanism 3 along the pipe axis, and the ratio of the angular velocity of the rotational movement around the pipe axis to the linear velocity of the movement along the pipe axis is fixed. According to different ratios, the speed ratio between the rotation of the pipe supporting structure around the pipe axis and the movement of the pay-off mechanism 3 along the pipe axis can be controlled, and the pitch width of the thread can be accurately controlled by controlling the speed ratio. That is, to select different values of the thread pitch when producing the threaded pipe, only the speed ratio of the rotation around the pipe axis and the movement along the axis needs to be changed, so that the control of the thread pitch of the threaded pipe is more uniform and accurate.

[0050] The length of the guide mechanism in the pipe axial direction is at least equal to that of the pipe supporting structure, and the pay-off mechanism 3 can move along the guide mechanism in the pipe axial direction. Before the winding step, the pay-off mechanism 3 is arranged on the guide mechanism and corresponds to one end of the pipe arranged on the pipe supporting mechanism 2. The free end of the wire in the wire storage part 31 is led out from the wire leading part 32 and fixed to the pipe arranged on the pipe supporting mechanism 2. It can be understood that the pipe arranged on the pipe supporting mechanism 2 can be arranged at one end of the pipe supporting mechanism 2 or at the middle part of the pipe supporting mechanism 2.

[0051] During the winding step, the driving mechanism 5 drives the pipe supporting mechanism 2 to rotate around the pipe axis while driving the pay-off mechanism 3 to move along the pipe axis. At the same time, the wire in the wire storage part 31 is unwound through the wire leading part 32. Since the pay-off mechanism 3 moves along the pipe axis and the pipe rotates around the pipe axis under the drive of the pipe supporting mechanism 2, the pay-off mechanism 3 can uniformly wind the wire on the pipe to form the thread. At the same time, since the speed ratio of the rotation of the pipe supporting mechanism 2 around the pipe axis and the movement of the pay-off mechanism 3 along the axis is fixed, the thread pitch distance of the threaded pipe can be controlled by controlling the ratio value between the two speeds, and the thread pitch can be accurately controlled.

[0052] Specifically, in some embodiments, the screw rod 54 with different thread pitch is replaced by the screw rod replacement unit 72, the speed ratio of rotation around the pipe axis and movement along the axis is adjusted, and the pipe supporting mechanism 2 is adjusted to rotate 1 turn around the pipe axis and the winding mechanism is adjusted to move 1 mm along the pipe axis, so that the thread pitch of the formed threaded pipe is 1 mm.

[0053] In some embodiments, the screw rod 54 with different thread pitch is replaced by the screw rod replacement unit 72, the speed ratio of rotation around the pipe axis and movement along the axis is adjusted, and the pipe supporting mechanism 2 is adjusted to rotate 0.5 turns around the pipe axis and the winding mechanism is adjusted to move 1 mm along the pipe axis, so that the thread pitch of the formed threaded pipe is 2 mm.

[0054] In some embodiments, the screw rod 54 with different thread pitch is replaced by the screw rod replacement unit 72, the speed ratio of rotation around the pipe axis and movement along the axis is adjusted, and the pipe supporting mechanism 2 is adjusted to rotate 1 turn around the pipe axis and the winding mechanism is adjusted to move 2 mm along the pipe axis, so that the thread pitch of the formed threaded pipe is 2 mm.

[0055] In some embodiments, the screw rod 54 with different thread pitch is replaced by the screw rod replacement unit 72, the speed ratio of rotation around the pipe axis and movement along the axis is adjusted, and the pipe supporting mechanism 2 is adjusted to rotate 1 turn around the pipe axis and the winding mechanism is adjusted to move 3 mm along the pipe axis, so that the thread pitch of the formed threaded pipe is 3 mm.

[0056] In some embodiments, the screw rod 54 with different thread pitch is replaced by the screw rod replacement unit 72, the speed ratio of rotation around the pipe axis and movement along the axis is adjusted, and the pipe supporting mechanism 2 is adjusted to rotate 0.5 turns around the pipe axis and the winding mechanism is adjusted to move 2 mm along the pipe axis, so that the thread pitch of the formed threaded pipe is 4 mm.

[0057] After the winding step is completed, the present application performs a forming step, the forming mechanism is arranged at one end of the pipe supporting mechanism 2, and the pipe supporting mechanism 2 is extruded at the other end to complete the winding step of the pipe, and the forming process of the threaded pipe is completed. It can be understood that by changing the extrusion degree of the forming mechanism, the gap distance of the threaded pipe can also be controlled.

[0058] When producing threaded pipes with different radial sizes, the pipe supporting part with different radial sizes is replaced by the supporting replacement part 71, which can meet the production of threaded pipes with different models on the same equipment, and reduce the cost of preparing multiple production equipment due to different production sizes.

[0059] In summary, by setting the pipe material supporting mechanism 2 capable of rotating around the pipe material axis under the driving of the driving mechanism 5, and the pay-off mechanism 3 capable of moving along the pipe material axis under the driving of the driving mechanism 5, under the driving of the driving mechanism 5, the wire material is wound on the pipe material in the winding step, and the ratio between the rotating speed of the pipe material supporting mechanism 2 and the moving speed of the pay-off mechanism 3 is constant during the winding step, so that the wire material can be uniformly wound on the pipe material. At the same time, by adjusting the speed ratio between the two, specifically, by replacing the screw rod replacement part 72 in the mechanism 7, replacing the screw rod 54 with different thread gap, the control of the thread gap distance is realized. The forming mechanism arranged at one end of the pipe material supporting mechanism 2 extrudes the pipe material from one end of the pipe material supporting mechanism 2 to the other end of the pipe material supporting mechanism 2, so that the pipe material after winding the wire material is extruded and formed, and finally a threaded pipe is formed. By controlling the extrusion degree of the forming mechanism, the length of the threaded pipe and the thread gap distance are controlled. By replacing the pipe material supporting mechanism with different radial sizes through the support replacement part 71, the demand for producing threaded pipes with different radial sizes is realized. The threaded pipe automatic forming device 100 provided by the application can ensure the accuracy of the threaded pipe forming, and can be flexibly changed according to the demand, can produce threaded pipes of different models, and reduce the complexity and cost of production operation.

[0060] In some embodiments, the support replacement part 71 includes a pair of support conversion discs 711 arranged on the support seat opposite to each other and rotating around a first axis parallel to the pipe material axis, and a plurality of support mounting holes 712 are arranged on the support conversion disc 711 to correspond to the support of a plurality of pipe material supporting mechanisms, and the plurality of support mounting holes 712 are circumferentially equidistantly arranged around the first axis, so as to be adapted to rotate the support conversion disc 711 around the first axis, so that any support mounting hole 712 corresponding pipe material supporting mechanism can be associated with the driving mechanism, while the rest of the support mounting hole 712 corresponding pipe material supporting mechanism is not associated with the driving mechanism.

[0061] A pair of support conversion discs 711 are arranged on the support seat opposite to each other and rotating around a first axis parallel to the pipe material axis, and a plurality of support mounting holes 712 are arranged on each support conversion disc 711 to correspond to the support of a plurality of pipe material supporting mechanisms. The radial sizes of the plurality of pipe material supporting mechanisms can be different. The size of each support mounting hole 712 is the same, and the pipe material supporting mechanisms with different sizes are fixed on the support mounting hole 712 by the mounting part, which is not shown in the figure.

[0062] The plurality of supporting mounting holes 712 are arranged equidistantly around the first axis, so as to be suitable for rotating the supporting conversion disc 711 around the first axis, so that any supporting mounting hole 712 corresponding pipe material supporting mechanism can be associated with the driving mechanism, while the rest of the supporting mounting hole 712 corresponding pipe material supporting mechanism is not associated with the driving mechanism; in some embodiments, the supporting mounting hole 712 is provided with two, that is, the angle between the supporting mounting holes 712 is 180°, at this time, by rotating the supporting conversion disc 711, one of the two pipe material supporting mechanisms can be selected to be associated with the driving mechanism, while the rest of the supporting mounting hole 712 corresponding pipe material supporting mechanism is not associated with the driving mechanism; in some embodiments, the supporting mounting hole 712 is provided with three, that is, the angle between the supporting mounting holes 712 is 120°, by rotating the supporting conversion disc 711, one of the three pipe material supporting mechanisms can be selected to be associated with the driving mechanism, while the rest of the supporting mounting hole 712 corresponding pipe material supporting mechanism is not associated with the driving mechanism. In some embodiments, the supporting mounting hole 712 is provided with four, that is, the angle between the supporting mounting holes 712 is 90°, at this time, by rotating the supporting conversion disc 711, one of the four pipe material supporting mechanisms can be selected to be associated with the driving mechanism, while the rest of the supporting mounting hole 712 corresponding pipe material supporting mechanism is not associated with the driving mechanism. It is conceivable that more than four supporting mounting holes 712 also belong to the protection scope of the present application, and four supporting mounting holes 712 are taken as an example in the figure, but it is not limited thereto.

[0063] The extending device 41 comprises a pressing piece 412 and a guide piece 411 detachably connected with the pressing piece 412, the pressing piece 412 is sleeved on the pipe material supporting mechanism 2 away from the driving mechanism 5, the guide piece 411 is slidingly arranged on the guide mechanism 6, when the pressing piece 412 is connected with the guide piece 411, along with the guide piece 411 moving on the guide mechanism 6 in the direction parallel to the pipe material axis, the pressing piece 412 moves along the pipe material supporting mechanism 2 in the direction of the pipe material axis to realize the shaping of the pipe material.

[0064] When the pipe material supporting mechanism 2 is replaced by rotating the supporting conversion disc 711, the pressing piece 412 is detached from the guide piece 411, and is separated from the pipe material supporting mechanism 2 away from the driving mechanism 5. After the appropriate pipe material supporting mechanism 2 is replaced by rotating the supporting conversion disc 711, the pressing piece 412 is sleeved on the pipe material supporting mechanism 2 away from the driving mechanism 5 again, and is connected and fixed with the guide piece 411 again.

[0065] Further, the supporting replacement part 71 further comprises a first pin group 713, which is used for association, so as to be suitable for the driving mechanism to drive the pipe material supporting mechanism to rotate around the pipe material axis.

[0066] The first pin group 713 fixes the driving mechanism and the pipe supporting mechanism, and when different pipe supporting mechanisms need to be replaced, the first pin group 713 is only disassembled to release the fixation of the driving mechanism and the pipe supporting mechanism, and after the pipe supporting mechanism is replaced, the pipe supporting mechanism and the driving mechanism are associated again through the pin.

[0067] Further, the first pin group 713 includes a first main pin 714 connecting the driving mechanism and the pipe supporting mechanism, a first driving pin 715 fixing the first main pin 714 and the driving mechanism, and a first pipe pin 716 fixing the first main pin 714 and the pipe supporting mechanism.

[0068] The first main pin 714 is inserted by the driving mechanism, parallel to the pipe axis and arranged between the driving mechanism and the pipe supporting mechanism, one end of the first main pin 714 is arranged in the driving mechanism, and the other end is arranged in the pipe supporting mechanism; the first driving pin 715 is arranged perpendicular to the pipe axis, connects the driving mechanism and the first main pin 714, so that the first main pin 714 rotates around the pipe axis with the rotation of the driving mechanism; the first pipe pin 716 is arranged perpendicular to the pipe axis, connects the pipe supporting mechanism and the first main pin 714, so that the pipe supporting mechanism rotates around the pipe axis with the rotation of the first main pin 714.

[0069] In some embodiments, the supporting replacement part 71 further includes a first fixing member for fixing the supporting conversion disc 711 stationary to the support seat when the driving mechanism drives the pipe supporting mechanism.

[0070] The first fixing member is not shown in the figure, by arranging the first fixing member, when the driving mechanism and the pipe supporting mechanism are associated and the driving mechanism drives the pipe supporting mechanism to rotate, the supporting conversion disc 711 can remain stationary compared to the support seat, preventing the association of the driving mechanism and the pipe supporting mechanism from being affected or even causing damage to the equipment due to the rotation of the supporting conversion disc 711.

[0071] In some embodiments, the screw rod replacement part 72 includes a pair of screw rod conversion discs 721 arranged on the support seat opposite to each other and rotating around a second axis parallel to the pipe axis, the screw rod conversion disc 721 is provided with a plurality of screw rod mounting holes 722 for supporting a plurality of screw rods 54, and the plurality of screw rod mounting holes 722 are arranged equidistantly around the second axis to adapt to the rotation of the screw rod conversion disc 721 around the second axis, so that any screw rod 54 corresponding to the screw rod mounting hole 722 can be associated with the driving mechanism, while the remaining screw rod 54 corresponding to the screw rod mounting hole 722 is not associated with the driving mechanism.

[0072] A pair of screw conversion discs 721 are arranged on the support base 71 and are opposite to each other and rotate around a second axis parallel to the axial direction of the pipe. Each screw conversion disc 721 is provided with a plurality of screw mounting holes 722 for corresponding supporting a plurality of screws 54. The radial dimensions of the plurality of screws 54 can be different. The sizes of each screw mounting hole 722 are the same, and the screws 54 of different sizes are fixed to the screw mounting hole 722 by a mounting member, which is not shown in the figure.

[0073] The plurality of screw mounting holes 722 are arranged equidistantly around the second axis, so as to be suitable for rotating the screw conversion disc 721 around the second axis, so that any screw 54 corresponding to the screw mounting hole 722 can be associated with the driving mechanism, while the remaining screws 54 corresponding to the screw mounting hole 722 are not associated with the driving mechanism. In some embodiments, the screw mounting holes 722 are provided as two, that is, the angle between the screw mounting holes 722 is 180°, at this time, by rotating the screw conversion disc 721, one of the two screws 54 can be selected to be associated with the driving mechanism, while the remaining screws 54 corresponding to the screw mounting hole 722 are not associated with the driving mechanism. In some embodiments, the screw mounting holes 722 are provided as three, that is, the angle between the screw mounting holes 722 is 120°, by rotating the screw conversion disc 721, one of the three screws 54 can be selected to be associated with the driving mechanism, while the remaining screws 54 corresponding to the screw mounting hole 722 are not associated with the driving mechanism. In some embodiments, the screw mounting holes 722 are provided as four, that is, the angle between the screw mounting holes 722 is 90°, at this time, by rotating the screw conversion disc 721, one of the four screws 54 can be selected to be associated with the driving mechanism, while the remaining screws 54 corresponding to the screw mounting hole 722 are not associated with the driving mechanism. It is conceivable that more than four screw mounting holes 722 also belong to the protection scope of the present application, and only four screw mounting holes 722 are taken as an example in the figure, but it is not limited thereto.

[0074] Further, the screw replacement part 72 further comprises a second pin group 723 for realizing association, so as to be suitable for the driving mechanism to drive the screw 54 to rotate and drive the pay-off mechanism to move along the axial direction of the pipe.

[0075] The second pin group 723 fixes the driving mechanism and the screw 54, and when different screws 54 need to be replaced, only the second pin group 723 needs to be disassembled to release the fixation of the driving mechanism and the screw 54, and after replacing the screw 54, the screw 54 and the driving mechanism are associated again through the pin.

[0076] Further, the second pin group 723 comprises a second main pin 724 connecting the driving mechanism and the screw 54, a second driving pin 725 fixing the second main pin 724 and the driving mechanism, and a second pipe pin 726 fixing the second main pin 724 and the screw 54.

[0077] The second main pin 724 is penetrated by the driving mechanism, is parallel to the pipe axis, and is arranged between the driving mechanism and the lead screw 54. One end of the second main pin 724 is arranged on the driving mechanism, and the other end is arranged on the lead screw 54. The second driving pin 725 is arranged perpendicular to the pipe axis, is connected between the driving mechanism and the second main pin 724, and enables the second main pin 724 to rotate around the pipe axis when the driving mechanism rotates. The second pipe pin 726 is arranged perpendicular to the pipe axis, is connected between the lead screw 54 and the second main pin 724, and enables the lead screw 54 to rotate around the pipe axis when the second main pin 724 rotates.

[0078] In some embodiments, the lead screw replacement part 72 further comprises a second fixing part, which is used to fix the lead screw conversion disc 721 to be stationary on the support seat when the driving mechanism drives the lead screw 54 to rotate.

[0079] The second fixing part is not shown in the figure. By arranging the second fixing part, the lead screw conversion disc 721 can be kept stationary compared with the support seat when the driving mechanism is associated with the lead screw 54 and the driving mechanism drives the lead screw 54 to rotate, so that the association between the driving mechanism and the lead screw 54 is not affected or even the equipment is damaged due to the rotation of the lead screw conversion disc 721.

[0080] In some embodiments, the driving mechanism comprises a driving input device, a first driving wheel, and a second driving wheel. The driving input device drives the first driving wheel and the second driving wheel to rotate. The first driving wheel is connected with the pipe supporting mechanism, so as to drive the pipe supporting mechanism to rotate around the pipe axis. The second driving wheel is connected with the lead screw, so as to drive the lead screw to rotate.

[0081] The driving input device can be a manual input device or an electric input device. The manual input device can be a crank handle, a rotating wheel, or the like. The electric input device can be a motor input. The driving input device can simultaneously drive the first driving wheel 52 and the second driving wheel 53 to rotate. The first driving wheel 52 is coaxially arranged with the pipe supporting mechanism 2. When the first driving wheel 52 rotates, the pipe supporting mechanism 2 is driven to rotate around the pipe axis. The second driving wheel 53 is engaged with the lead screw 54. When the second driving wheel 53 rotates, the lead screw 54 is driven to rotate, and the semi-open nut engaged with the lead screw 54 is driven to move along the lead screw 54.

[0082] Further, the driving input device is coaxially arranged with the first driving wheel 52. The driving device drives the first driving wheel 52 to rotate by rotating along the pipe axis. The first driving wheel 52 and the second driving wheel 53 are driven by a transmission belt.

[0083] In some embodiments, the driving device is arranged on the support seat and is driven by the transmission belt.

[0084] In another aspect, the embodiments of the present application also provide a threaded pipe automatic forming method, comprising: using the pipe material supporting mechanism, supporting the pipe material radially; using the wire feeding mechanism, placing the wire material and leading the wire material to the pipe material; using the driving mechanism, driving the pipe material supporting mechanism to rotate the pipe material around the pipe material axis, and driving the wire feeding mechanism to move along the pipe material axis and cover the pipe material axial length range, so as to adapt to winding the wire material on the pipe material surface; using the replacement mechanism, replacing the pipe material supporting mechanism through the supporting replacement part, and / or replacing the lead screw through the lead screw replacement part.

[0085] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic forming device for a threaded tube made of degradable plastic, characterized in that the forming device comprises: a support base; a tube supporting mechanism for supporting the tube at least in the radial direction; a wire feeding mechanism provided with a wire storage portion for storing a wire and a wire leading portion for leading the wire from the wire storage portion to the tube; a shaping mechanism for compressing the tube in the axial direction of the tube; a driving mechanism for driving the tube supporting mechanism to rotate the tube about the tube axis, and driving the wire feeding mechanism to move along the tube axis and cover the axial length of the tube by means of a screw rod, so as to wind the wire on the surface of the tube; a guiding mechanism for guiding the wire feeding mechanism to move along the tube axis; a replacement mechanism comprising a support replacement portion for replacing the tube supporting mechanism and / or a screw rod replacement portion for replacing the screw rod; the support replacement portion comprises a pair of support conversion discs arranged on the support base opposite to each other and rotating about a first axis parallel to the axial direction of the tube, and a plurality of support mounting holes are arranged on the support conversion discs, corresponding to a plurality of the tube supporting mechanisms with different radial sizes for supporting tubes with different radial sizes, the plurality of support mounting holes are arranged equidistantly in the circumferential direction about the first axis, so that the tube supporting mechanism corresponding to any one of the support mounting holes can be associated with the driving mechanism, while the tube supporting mechanisms corresponding to the remaining support mounting holes are not associated with the driving mechanism; the support replacement portion further comprises a first pin group for realizing the association, so that the driving mechanism drives the tube supporting mechanism to rotate about the tube axis; the screw rod replacement portion comprises a pair of screw rod conversion discs arranged on the support base opposite to each other and rotating about a second axis parallel to the axial direction of the tube, and a plurality of screw rod mounting holes are arranged on the screw rod conversion discs, corresponding to a plurality of the screw rods with different thread clearances for controlling the distance of thread clearances by replacing screw rods with different thread clearances, the plurality of screw rod mounting holes are arranged equidistantly in the circumferential direction about the second axis, so that the screw rod corresponding to any one of the screw rod mounting holes can be associated with the driving mechanism, while the screw rods corresponding to the remaining screw rod mounting holes are not associated with the driving mechanism; the screw rod replacement portion further comprises a second pin group for realizing the association, so that the driving mechanism drives the screw rod to rotate and drives the wire feeding mechanism to move along the tube axis.

2. The automatic forming device for a threaded tube according to claim 1, characterized in that the support replacement portion further comprises a first fixing member for fixing the support conversion disc to be stationary on the support base when the driving mechanism drives the tube supporting mechanism.

3. The automatic forming device for a threaded tube according to claim 1, characterized in that ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The second pin group includes a second main pin connecting the driving mechanism and the lead screw, a second driving pin fixing the second main pin and the driving mechanism, and a second pipe pin fixing the second main pin and the lead screw.

4. The automatic forming device for threaded pipe according to claim 1, wherein, The first pin group includes a first main pin connecting the driving mechanism and the pipe supporting mechanism, a first driving pin fixing the first main pin and the driving mechanism, and a first pipe pin fixing the first main pin and the pipe supporting mechanism.

5. The automatic forming device for threaded pipe according to claim 1, wherein, The lead screw replacement part further includes a second fixing member for fixing the supporting conversion disc at the support seat when the driving mechanism drives the lead screw to rotate.

6. An automatic forming method for threaded pipe made of degradable plastic, wherein, The forming method includes: using the pipe supporting mechanism to support the pipe radially along the pipe; using the wire laying mechanism to lay the wire and lead the wire out of the pipe; using the driving mechanism to drive the pipe supporting mechanism to rotate the pipe around the pipe axis, and drive the wire laying mechanism to move along the pipe axis and cover the axial length of the pipe to adapt to winding the wire on the pipe surface; using the replacement mechanism to replace the pipe supporting mechanism through the supporting replacement part, and / or replace the lead screw through the lead screw replacement part.

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