Automatic forming device and forming method for threaded pipes

Abstract

The present invention relates to an automatic forming device and a forming method for a threaded pipe, the threaded pipe being made of a degradable plastic, and the forming device comprising: a support base; a pipe support mechanism for supporting the pipe at least radially of the pipe; a wire pay-off mechanism provided with a wire storage part for placing a wire and a wire leading part for leading the wire from the wire storage part to the pipe; a guiding mechanism for guiding the wire pay-off mechanism to move axially along the pipe; a shaping mechanism for axially compressing the pipe along the pipe; and a driving mechanism for driving the pipe support mechanism to drive the pipe to rotate around the pipe axis, and at the same time driving the wire pay-off mechanism to move axially along the pipe and cover the axial length range of the pipe, so as to be suitable for winding the wire on the surface of the pipe. The present invention can ensure the accuracy of the threaded pipe forming.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing, and particularly relates to an automatic forming device and forming method for a threaded pipe. Background Art

[0002] In the prior art, there are generally two schemes for forming the threads of pipes: one is extrusion forming through a mold, and the other is grinding and cutting processing with a tool. However, in the medical field, due to the special material of the pipe, it cannot be shaped by a mold, nor can it be processed by a tool. Therefore, both forming schemes are not applicable to the thread forming of flexible pipe materials in the medical field.

[0003] In the medical field, the preparation of threaded pipes often adopts the following method: based on the principle of pouring, by preparing a tubular mold and injecting a silicone raw material into the mold, and then performing pore formation and etching on the inner wall after the raw material is cured and formed. However, for the threaded pipes formed by pouring, it is impossible to accurately control the threads both, and there may be air holes in the threaded pipes due to incomplete air discharge, affecting the quality of the threaded pipes. Another method for forming threaded pipes is to manually wind wire on the pipe to form threads. This preparation method cannot control the winding force, and it is impossible to ensure that the pipe will not be damaged during winding.

[0004] Both preparation methods cannot achieve precise control of the thread pitch, thus unable to ensure the accuracy of the thread forming of the threaded pipes; and due to the inability to control the force, the original pipe may be damaged due to winding, resulting in the performance of the threaded pipes not meeting the use requirements, or even causing damage to the threaded pipes. Therefore, both preparation methods are not applicable to large-scale production of threaded pipes. Summary of the Invention

[0005] The present invention aims to solve at least one of the problems existing in the prior art. For this purpose, the present invention provides an automatic forming device and forming method for a threaded pipe, which is convenient for large-scale production of threaded pipes.

[0006] An automatic forming device for a threaded pipe according to an embodiment of the present invention includes: a support base; a pipe supporting mechanism for supporting the pipe at least radially; a wire feeding mechanism provided with a wire storage part for placing the wire and a wire guiding part for guiding the wire from the wire storage part to the pipe; a guiding mechanism for guiding the wire feeding mechanism to move axially along the pipe; a shaping mechanism for axially compressing the pipe; and a driving mechanism for driving the pipe supporting mechanism to drive the pipe to rotate around the pipe axis, and at the same time driving the wire feeding mechanism to move axially along the pipe and cover the axial length range of the pipe, so as to wind the wire on the surface of the pipe.

[0007] In some embodiments, the guiding mechanism includes a guiding rod extending along the axial direction of the pipe, and the base of the wire pay-off mechanism is slidably arranged on the guiding rod.

[0008] In some embodiments, the driving mechanism includes a driving rod and a driving fitting, and the driving fitting is connected to the driving rod through a selection connector, so that the driving fitting is adapted to have a first state of being connected to the driving rod and a second state of being disengaged from the driving rod through the selection connector.

[0009] In some embodiments, the driving rod is a lead screw, and the driving fitting is a semi-open nut.

[0010] In some embodiments, the selection connector is an elastic member, so that the semi-open nut is elastically crimped and sleeved on the lead screw through the elastic member to achieve the first state, and is disengaged from the lead screw by overcoming the elastic force of the elastic member to achieve the second state.

[0011] In some embodiments, the driving mechanism includes: a driving input device, a first driving wheel and a second driving wheel, and the driving input device drives the first driving wheel and the second driving wheel to rotate; the first driving wheel is connected to the pipe supporting mechanism to be adapted to drive the pipe supporting mechanism to rotate around the pipe axis, and the second driving wheel is connected to the lead screw to be adapted to drive the lead screw to rotate.

[0012] In some embodiments, the driving input device and the first driving wheel are coaxially arranged, and the driving input device rotates along the axial direction of the pipe to drive the first driving wheel to rotate; the first driving wheel and the second driving wheel are driven by a transmission belt.

[0013] In some embodiments, the pipe supporting mechanism includes a supporting rod for being sleeved by the pipe and radially supporting the pipe, and a first fixing member and a second fixing member arranged at both ends of the supporting rod, and the first fixing member and / or the second fixing member is / are slidably arranged on the supporting rod along the extending direction of the supporting rod, and the first fixing member is arranged at one end of the second fixing member away from the driving mechanism and is used to cooperate with the second fixing member to axially support the pipe.

[0014] In some embodiments, a first locking member is arranged on the first fixing member for fixing the position of the first fixing member on the supporting rod; a second locking member is arranged on the second fixing member for fixing the position of the second fixing member on the supporting rod.

[0015] On the other hand, an embodiment of the present application also provides an automatic forming method for a threaded pipe, including:

[0016] Use the described pipe supporting mechanism to support the pipe radially along the pipe;

[0017] Use the described wire paying - out mechanism to place the wire and lead the wire out towards the pipe;

[0018] Use the described driving mechanism to drive the pipe supporting mechanism to drive the pipe to rotate around the pipe axis, and at the same time drive the wire paying - out mechanism to move along the pipe axis and cover the axial length range of the pipe, so as to be suitable for winding the wire on the surface of the pipe.

[0019] In the embodiment of the present invention, the pipe is sleeved on the pipe supporting mechanism and can rotate around the pipe axis following the pipe supporting mechanism under the drive of the driving mechanism. The wire paying - out mechanism is provided with a wire storage part for placing the wire, and the wire wound on the wire storage part is paid out. The wire paying - out mechanism is correspondingly arranged with the pipe supporting structure and can move along the pipe axis under the drive of the driving mechanism. Through the rotation of the pipe supporting structure around the pipe axis and the movement of the wire paying - out mechanism along the pipe axis, the wire in the wire storage part of the wire paying - out mechanism is wound on the pipe arranged on the pipe supporting mechanism; the guiding mechanism is arranged parallel to the pipe axis and is used to support the wire paying - out mechanism radially and enable the wire paying - out mechanism to move along the pipe axis along the guiding mechanism.

[0020] By synchronously moving the arranged wire paying - out mechanism and the pipe supporting mechanism, the wire arranged in the wire storage part of the wire paying - out mechanism is led out through the wire leading part and then wound on the pipe arranged on the pipe supporting mechanism. Because the pipe supporting structure rotates around the pipe axis while the wire paying - out mechanism moves along the pipe axis, the pipe supporting mechanism and the wire paying - out mechanism cooperate to wind the wire on the pipe, realizing the wire winding process of the pipe.

[0021] By setting a pipe supporting mechanism that can rotate around the pipe axis under the drive of the driving mechanism and a wire paying - out mechanism that can move along the pipe axis under the drive of the driving mechanism, the two perform the wire winding step of winding the wire on the pipe under the drive of the driving mechanism. Because the ratio between the rotation speed of the pipe supporting mechanism and the moving speed of the wire paying - out mechanism is constant during the wire winding step, the wire can be evenly wound on the pipe. At the same time, by adjusting the speed ratio between the two, the control of the thread gap distance can be realized. The automatic screw - pipe forming device provided by the present invention can ensure the accuracy of screw - pipe forming and enable large - scale production. Brief Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for use in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0023] Figure 1 Schematic diagram of an automatic forming device for a threaded pipe provided by an embodiment of the present invention;

[0024] Figure 2 Schematic diagram of a wire feeding mechanism of an automatic forming device for a threaded pipe provided by an embodiment of the present invention;

[0025] Figure 3 Partial schematic diagram of a support seat driving mechanism of an automatic forming device for a threaded pipe provided by an embodiment of the present invention;

[0026] Figure 4 For Figure 3 Partial enlarged view at A in

[0027] Figure 5 Partial schematic diagram of a support seat of an automatic forming device for a threaded pipe provided by an embodiment of the present invention.

[0028] Reference numerals:

[0029] Automatic forming device 100 for threaded pipe; support seat 1; pipe support mechanism 2; support rod 21; first fixing member 22; second fixing member 23; wire feeding mechanism 3; wire storage part 31; wire leading part 32; base 33; semi-open nut 34; selection connector 35; shaping mechanism 4; extending device 41; guiding member 411; pressing member 412; driving mechanism 5; driving input device 51; first driving wheel 52; second driving wheel; lead screw 54; transmission belt 56; guiding mechanism 6. Detailed implementation manners

[0030] The description of the implementation manners of this specification should be combined with the corresponding accompanying drawings, and the accompanying drawings should be regarded as a part of the complete specification. In the accompanying drawings, the shape or thickness of the embodiments can be enlarged and simplified or conveniently marked. Furthermore, each part of the structure in the drawings will be described separately. It should be noted that the elements not shown or not described in words in the drawings are in the forms known to those of ordinary skill in the art.

[0031] In the description of the embodiments herein, any reference to directions and orientations is for the convenience of description only and should not be construed as any limitation on the scope of protection of the present invention. The following description of the preferred embodiments involves combinations of features that may exist independently or in combination. The present invention is not particularly limited to the preferred embodiments. The scope of the present invention is defined by the claims.

[0032] This embodiment provides an automatic forming device 100 for a threaded pipe according to an embodiment of the present invention, including: a support base 1; a pipe support mechanism 2 for supporting the pipe at least in the radial direction of the pipe; a wire feeding mechanism 3 provided with a wire storage part 31 for placing the wire and a wire leading part 32 for leading the wire from the wire storage part 31 to the pipe; a guiding mechanism 6 for guiding the wire feeding mechanism 3 to move along the axial direction of the pipe; a driving mechanism 5 for driving the pipe support mechanism 2 to drive the pipe to rotate around the pipe axis, and at the same time driving the wire feeding mechanism 3 to move along the axial direction of the pipe and cover the axial length range of the pipe, so as to wind the wire around the surface of the pipe.

[0033] As Figure 1 shown, the pipe is sleeved on the pipe support mechanism 2 and can rotate around the pipe axis following the pipe support mechanism 2 under the drive of the driving mechanism 5. As Figure 2 shown, the wire feeding mechanism 3 is provided with a wire storage part 31 for placing the wire. Among them, the wire storage part 31 can be set as a spool, and the wire storage part 31 rotates as the wire feeding mechanism 3 moves, and the wire wound on the wire storage part 31 is released. The wire leading part 32 is arranged on one side of the wire feeding mechanism 3 close to the pipe support mechanism 2 for leading the free end of the wire wound on the wire storage part 31 from the wire storage part 31 to the pipe. Among them, the wire leading part 32 can be selected to be set as a wire leading hole, and the wire passes through the wire leading hole.

[0034] In some embodiments, the wire storage part 31 includes two clamping parts and a spring. The spool is placed between the two clamping parts, and the two clamping parts are pressed tightly by the spring to realize the support of the spool.

[0035] In one embodiment, the wire leading part 32 is set as a wire leading hole, and the free end of the wire is led out through the wire leading hole. 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.

[0036] The wire feeding mechanism 3 is correspondingly arranged with the pipe support structure and can move along the pipe axis under the drive of the driving mechanism 5. Through the rotation of the pipe support structure around the pipe axis and the movement of the wire feeding mechanism 3 along the pipe axis, the wire in the wire storage part 31 of the wire feeding mechanism 3 is wound on the pipe arranged on the pipe support mechanism 2.

[0037] In one embodiment, the guiding mechanism 6 is arranged parallel to the axial direction of the pipe, and is used to support the wire pay-off mechanism 3 radially, and enable the wire pay-off mechanism 3 to move along the axis of the pipe along the guiding mechanism 6.

[0038] In one embodiment, the driving mechanism 5 can be selected as electric drive or manual drive. Among them, when electric drive is selected, driving devices such as motors and cylinders can be selected; when manual drive is selected, methods such as setting a manual crank can be selected.

[0039] In the embodiment of the present invention, an automatic forming device 100 for threaded pipes is proposed. By synchronously moving the arranged wire pay-off mechanism 3 and the pipe supporting mechanism 2, the wire in the wire storage part 31 of the wire pay-off mechanism 3 is led out through the wire guiding part 32 and then wound around the pipe arranged on the pipe supporting mechanism 2. Since the pipe supporting structure rotates around the axial direction of the pipe, while the wire pay-off mechanism 3 moves along the axial direction of the pipe, the pipe supporting mechanism 2 and the wire pay-off mechanism 3 cooperate to wind the wire around the pipe, realizing the wire winding process of the pipe.

[0040] Specifically, when the driving mechanism 5 drives the pipe supporting structure to rotate around the axial direction of the pipe, the movement is also synchronously transmitted to the wire pay-off mechanism 3, that is, there is an associated cooperation between the rotational movement of the pipe supporting structure around the axis of the pipe and the translational movement of the wire pay-off mechanism 3 along the axis of the pipe, and the ratio between the angular velocity of the rotational movement around the axis of the pipe and the linear velocity of the translational movement along the axis of the pipe is fixed. According to different set ratios, the speed ratio between the rotation of the pipe supporting structure around the axis of the pipe and the movement of the wire pay-off mechanism 3 along the axis of the pipe can be controlled. By controlling the speed ratio, the gap width of the thread can be accurately controlled. That is, if different values of the thread gap are to be selected when producing threaded pipes, only the speed ratio of the rotation around the axis of the pipe and the movement along the axis needs to be changed, so that the control of the thread gap of the threaded pipe is more uniform and accurate.

[0041] The length of the guiding mechanism 6 along the axial direction of the pipe is at least set to be equal to that of the pipe supporting structure, and the wire pay-off mechanism 3 can move along the guiding mechanism 6 along the axial direction of the pipe. Before the winding step, the wire pay-off mechanism 3 is arranged on the guiding mechanism 6 and corresponds to one end of the pipe placed on the pipe supporting mechanism 2, and the free end of the wire in the wire storage part 31 is led out through the wire guiding part 32 and fixed to the pipe placed on the pipe supporting mechanism 2. It can be understood that the pipe placed on the pipe supporting mechanism 2 can be arranged at one end of the pipe supporting mechanism 2 or in the middle part of the pipe supporting mechanism 2.

[0042] When performing the winding step, while the driving mechanism 5 drives the pipe support mechanism 2 to rotate around the axial direction of the pipe, it drives the wire feeding mechanism 3 to move along the axial direction of the pipe. While the wire feeding mechanism 3 is moving, the wire in the wire storage part 31 is fed through the wire guiding part 32. Since the wire feeding mechanism 3 is moving along the axis of the pipe, and the pipe is driven by the pipe support mechanism 2 to rotate around the axis of the pipe, the wire feeding mechanism 3 can evenly wind the wire onto the pipe to form a thread line. At the same time, because there is a fixed ratio between the rotation speed of the pipe support mechanism 2 around the axis of the pipe and the moving speed of the wire feeding mechanism 3 along the axis, the gap distance between the thread lines of the threaded pipe can be controlled by controlling the ratio value between the two speeds, realizing precise control of the thread gap.

[0043] In one embodiment, the ratio of the rotation speed around the axis of the pipe to the moving speed along the axis is adjusted such that when the pipe support mechanism 2 rotates 1 circle around the axis of the pipe, the winding mechanism moves 1 mm along the axis of the pipe, so that the thread pitch of the formed threaded pipe is 1 mm.

[0044] In one embodiment, the ratio of the rotation speed around the axis of the pipe to the moving speed along the axis is adjusted such that when the pipe support mechanism 2 rotates 0.5 circle around the axis of the pipe, the winding mechanism moves 1 mm along the axis of the pipe, so that the thread pitch of the formed threaded pipe is 2 mm.

[0045] In one embodiment, the ratio of the rotation speed around the axis of the pipe to the moving speed along the axis is adjusted such that when the pipe support mechanism 2 rotates 1 circle around the axis of the pipe, the winding mechanism moves 2 mm along the axis of the pipe, so that the thread pitch of the formed threaded pipe is 2 mm.

[0046] In one embodiment, the ratio of the rotation speed around the axis of the pipe to the moving speed along the axis is adjusted such that when the pipe support mechanism 2 rotates 1 circle around the axis of the pipe, the winding mechanism moves 3 mm along the axis of the pipe, so that the thread pitch of the formed threaded pipe is 3 mm.

[0047] In one embodiment, the ratio of the rotation speed around the axis of the pipe to the moving speed along the axis is adjusted such that when the pipe support mechanism 2 rotates 0.5 circle around the axis of the pipe, the winding mechanism moves 2 mm along the axis of the pipe, so that the thread pitch of the formed threaded pipe is 4 mm.

[0048] In the embodiment of the present invention, by providing a pipe support mechanism 2 that can rotate around the axis of the pipe under the drive of a drive mechanism 5, and a wire pay-off mechanism 3 that can move along the axis of the pipe under the drive of the drive mechanism 5, both of them perform a wire winding step of winding the wire around the pipe under the drive of the drive mechanism 5. Since the ratio between the rotation speed of the pipe support mechanism 2 and the moving speed of the wire pay-off mechanism 3 is constant during the winding step, the wire can be evenly wound around the pipe. At the same time, by adjusting the speed ratio between the two, the control of the thread clearance distance can be achieved. The shaping mechanism provided at one end of the pipe support mechanism 2 extrudes the pipe from one end of the pipe support mechanism 2 to the other end of the pipe support mechanism 2, so that the pipe with the wound wire is extruded and formed, and finally a threaded pipe is formed. By controlling the extrusion degree of the shaping mechanism, the length of the threaded pipe and the thread clearance distance can be controlled. The automatic threaded pipe forming device 100 provided by the present invention can ensure the accuracy of the threaded pipe forming and enable large-scale production.

[0049] In one embodiment, the guiding mechanism 6 includes a guiding rod extending along the axial direction of the pipe and a base 33 provided on the wire pay-off mechanism 3, and the base 33 is slidably arranged on the guiding rod.

[0050] The wire pay-off mechanism 3 is arranged on the guiding rod through the base 33, and the base 33 is slidably arranged on the guiding rod so that the wire pay-off mechanism 3 can perform a sliding movement along the guiding rod. Among them, the guiding rod is parallel to the axis of the pipe, that is, when the wire pay-off mechanism 3 slides along the guiding rod, it moves along the axial direction of the pipe. The guiding rod provides a supporting force in the radial direction of the pipe for the wire pay-off mechanism 3.

[0051] In one embodiment, the drive mechanism 5 includes a lead screw 54 extending along the axial direction and a semi-open nut 34 selectively sleeved on the lead screw 54. The semi-open nut 34 is connected to the wire pay-off mechanism 3 through a selection connector 35, so that the semi-open nut 34 can have a first state of being sleeved on the lead screw 54 and a second state of being disengaged from the lead screw 54 through the selection connector 35.

[0052] The selection connector 35 can be selectively switched between the first state and the second state through an elastic member, a clamping member or a self-locking member.

[0053] In the first state, the selection connector 35 connects the semi-open nut 34 to the lead screw 54, and the wire pay-off mechanism 3 moves along with the semi-open nut 34 on the lead screw 54. The lead screw 54 extends along the axial direction of the pipe, so that when the wire pay-off mechanism 3 moves along with the semi-open nut 34 on the lead screw 54, it moves along the axial direction of the pipe.

[0054] In the second state, the semi-open nut 34 is disengaged from the lead screw 54, and the wire pay-off mechanism 3 moves along the extension direction of the guiding mechanism 6 under the support of the guiding mechanism 6.

[0055] In one embodiment, a sizing mechanism 4 is further included. When sizing the pipe, the extending device 41 of the sizing mechanism 4 extends to size the pipe. To prevent the extending route of the extending device 41 from being blocked by the wire feeding mechanism 3, before the sizing operation, by overcoming the elastic force of the elastic member, the semi-open nut 34 is disengaged from the lead screw 54, and then the wire feeding mechanism 3 is moved away from the sizing mechanism 4 to a position where it will no longer block the extending device 41. By moving the wire feeding mechanism 3 away from the sizing mechanism 4, the extending operation of the sizing mechanism 4 becomes more stable.

[0056] After completing the extrusion sizing step of the threaded pipe, the formed threaded pipe is removed from the pipe supporting mechanism 2, and a new pipe to be formed is installed on the pipe supporting mechanism 2. By adjusting the selection connector 35, the selection connector 35 is in the second state. At this time, the winding mechanism is disengaged from the lead screw 54 and moves and adjusts its position along the axial direction of the pipe under the guidance of the guiding mechanism 6. The winding mechanism can wind the wire without returning to the starting position.

[0057] That is, a plurality of pipes to be wound are continuously arranged on the pipe supporting mechanism 2. After the wire feeding mechanism 3 completes winding, it can continue to wind from the end point of the next pipe without replacing a new pipe to be wound after each winding is completed.

[0058] Further, the selection connector 35 is an elastic member, which is adapted to enable the semi-open nut 34 to be elastically pressed and sleeved on the lead screw 54 through the elastic member to achieve the first state, and to overcome the elastic force to disengage from the lead screw 54 to achieve the second state.

[0059] In the first state, the semi-open nut 34 is pressed against the lead screw 54 through the elastic member, so that the wire feeding mechanism 3 moves along the axial direction of the pipe under the drive of the drive mechanism 5.

[0060] In the second state, by overcoming the elastic force of the elastic member, the semi-open nut 34 is disengaged from the lead screw 54, and the wire feeding mechanism 3 no longer moves with the drive of the drive mechanism 5. At this time, the guiding mechanism 6 supports the wire feeding mechanism 3, and the wire feeding mechanism 3 can move along the guiding mechanism 6.

[0061] Selecting an elastic member as the selection connector 35 makes the operation simpler when switching between the first state and the second state.

[0062] As Figure 3 and 4 shown, in one embodiment, the drive mechanism includes: a drive input device 51, a first drive wheel 52, and a second drive wheel. The drive input device 51 drives the first drive wheel 52 and the second drive wheel to rotate; the first drive wheel 52 is connected to the pipe supporting mechanism to be adapted to drive the pipe supporting mechanism to rotate around the pipe axis, and the second drive wheel is connected to the lead screw 54 to be adapted to drive the lead screw 54 to rotate.

[0063] The driving input device 51 can be set as a manual input device or an electric input device. Among them, the manual input device can choose to adopt a crank, a rotating wheel, etc. The electric input device can choose to adopt a motor input. The driving input device 51 can drive the first driving wheel 52 and the second driving wheel to rotate simultaneously. The first driving wheel 52 is concentrically arranged with the pipe support mechanism 2. When the first driving wheel 52 rotates, it drives the pipe support mechanism 2 to rotate around the axial direction of the pipe. The second driving wheel meshes with the lead screw 54. When the second driving wheel rotates, it drives the lead screw 54 to rotate and makes the semi-open nut meshing with the lead screw 54 move along the lead screw 54.

[0064] In one embodiment, the driving input device 51 and the first driving wheel 52 are coaxially arranged. The driving device rotates along the axial direction of the pipe to drive the first driving wheel 52 to rotate; the first driving wheel 52 and the second driving wheel are driven by a transmission belt 56.

[0065] In one embodiment, the driving device is arranged on the support seat and is driven by a transmission belt 56 with the first driving wheel 52 and the second driving wheel.

[0066] By changing the tooth number ratio of the first driving wheel 52 and the second driving wheel, the angular velocities of the first driving wheel 52 and the second driving wheel are different. According to the thread gap distance of the threaded pipe required for actual production, different tooth number ratios of the first driving wheel 52 and the second driving wheel are selected.

[0067] As Figure 1 shown, in some embodiments, the pipe support mechanism 2 includes a support rod 21 for being sleeved by the pipe and radially supporting the pipe, and a first fixing member 22 and a second fixing member 23 arranged at both ends of the support rod 21. The first fixing member 22 is slidably arranged on the support rod 21 along the extending direction of the support rod 21. The first fixing member 22 is arranged at one end of the second fixing member 23 away from the driving mechanism and is used to cooperate with the second fixing member 23 to axially support the pipe.

[0068] The first fixing member 22 and the second fixing member 23 cooperate to axially fix the pipe arranged on the support rod 21. Among them, the first fixing member 22 is slidably arranged on the support rod 21 along the extending direction of the support rod 21 and can adjust the position of the first fixing member 22 arranged on the support rod according to the length of the pipe arranged on the support rod 21. So that no matter what the axial length of the pipe is, it can be fixed by the cooperation of the first fixing member 22 and the second fixing member 23.

[0069] In one embodiment, the second fixing member 23 is slidably arranged on the support rod along the extending direction of the support rod.

[0070] Adjust the position of the second fixing member 23 according to the position of the pipe on the support rod, so that the winding step does not require the winding mechanism to return to the starting point.

[0071] In one embodiment, a first locking member is provided on the first fixing member 22 for fixing the position of the first fixing member 22 on the support rod 21; a second locking member is provided on the second fixing member 23 for fixing the position of the second fixing member 23 on the support rod 21.

[0072] Before the winding step, after the pipe is sleeved on the support rod 21, the first fixing member 22 and the second fixing member 23 clamp the pipe from both ends of the pipe, and are locked by the first locking member and the second locking member respectively, to prevent the positions of the first fixing member 22 and the second fixing member 23 from changing due to the rotation of the support rod during subsequent winding, and the effect of axially supporting the pipe is weakened.

[0073] As Figure 2 shown, further, the extending device 41 includes a guiding member 411 and a pressing member 412, and the guiding member 411 and the pressing member 412 are fixedly arranged; the guiding member 411 is slidably arranged on the guiding mechanism 6 and moves along the axial direction of the pipe; the pressing member 412 is slidably arranged on the pipe supporting mechanism 2 and moves along with the movement of the guiding member 411 for pressing the pipe.

[0074] The guiding mechanism 6 assists in supporting the extending device 41 and enables the guiding mechanism 6 to expand and contract along the axial direction of the pipe.

[0075] On the other hand, an embodiment of the present application further provides a method for automatically forming a threaded pipe, including: using the pipe supporting mechanism to support the pipe radially; using the wire feeding mechanism to place the wire and lead the wire to the pipe; using the driving mechanism to drive the pipe supporting mechanism to drive the pipe to rotate around the axis of the pipe, and at the same time driving the wire feeding mechanism to move along the axial direction of the pipe and cover the axial length range of the pipe, so as to be suitable for winding the wire on the surface of the pipe.

[0076] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic forming device for a threaded pipe, characterized in that, Comprising: A support base (1); A pipe support mechanism (2) for supporting the pipe at least radially; A wire paying-off mechanism (3) provided with a wire storage part (31) for placing the wire and a wire leading part (32) for leading the wire from the wire storage part (31) to the pipe; A guiding mechanism (6) for guiding the wire paying-off mechanism (3) to move axially along the pipe; A shaping mechanism (4) for axially compressing the pipe; A driving mechanism (5) for driving the pipe support mechanism (2) to drive the pipe to rotate around the pipe axis, and at the same time driving the wire paying-off mechanism (3) to move axially along the pipe and covering the axial length range of the pipe, so as to be suitable for winding the wire on the surface of the pipe; The driving mechanism includes a driving rod and a driving mating part, and the driving mating part is connected to the driving rod through a selection connector, so as to be suitable for the driving mating part to have a first state of being connected to the driving rod and a second state of being separated from the driving rod through the selection connector; The driving rod is a lead screw, and the driving mating part is a semi-open nut; The selection connector (35) is an elastic part, so as to be suitable for the semi-open nut (34) to be elastically crimped and sleeved on the lead screw (54) through the elastic part to achieve the first state, and to overcome the elastic force of the elastic part to be separated from the lead screw (54) to achieve the second state; The driving mechanism (5) includes: a driving input device (51), a first driving wheel (52) and a second driving wheel. The driving input device (51) drives the first driving wheel (52) and the second driving wheel to rotate; the first driving wheel (52) is connected to the pipe support mechanism (2) so as to be suitable for driving the pipe support mechanism to rotate around the pipe axis, and the second driving wheel is connected to the lead screw (54) so as to be suitable for driving the lead screw (54) to rotate; The pipe support mechanism (2) includes a support rod (21) for being sleeved by the pipe and supporting the pipe radially, and a first fixing part (22) and a second fixing part (23) arranged at both ends of the support rod (21). The first fixing part (22) and / or the second fixing part (23) are slidably arranged on the support rod (21) along the extending direction of the support rod (21). The first fixing part (22) is arranged at one end of the second fixing part (23) far from the driving mechanism, and is used for cooperating with the second fixing part (23) to axially support the pipe.

2. The automatic forming device for threaded pipes according to claim 1, characterized in that, The guiding mechanism (6) includes a guiding rod extending axially along the pipe, and the base (33) of the wire paying-off mechanism (3) is slidably arranged on the guiding rod.

3. The automatic forming device for threaded pipes according to claim 1, characterized in that, The driving input device (51) and the first driving wheel (52) are coaxially arranged, and the driving input device rotates axially along the pipe to drive the first driving wheel (52) to rotate; the first driving wheel (52) and the second driving wheel are driven by a transmission belt (56).

4. The automatic forming device for threaded pipes according to claim 1, characterized in that, A first locking member (221) is provided on the first fixing member (22) for fixing the position of the first fixing member (22) on the support rod (21); a second locking member (231) is provided on the second fixing member (23) for fixing the position of the second fixing member (23) on the support rod (21).

5. An automatic forming method for a threaded pipe, characterized in that, Using the forming device according to any one of claims 1-4, the forming method comprises: Using the pipe supporting mechanism to support the pipe radially along the pipe; Using the wire feeding mechanism to place the wire and lead the wire out to the pipe; Using the driving mechanism to drive the pipe supporting mechanism (2) to drive the pipe to rotate around the pipe axis, and at the same time driving the wire feeding mechanism (3) to move along the pipe axis and cover the axial length range of the pipe, so as to be suitable for winding the wire on the surface of the pipe.

Images