Shrinkage pipe type screw drill stator machining and forming equipment

Abstract

The invention relates to the field of stator machining, in particular to shrinkage pipe type screw drill stator machining forming equipment, and aims to relieve the technical problem of low stator machining precision in related technologies. According to the shrinkage pipe type screw drill stator machining and forming equipment, machining of the inner surface and the outer surface of a stator is achieved in an extrusion mode, the inner surface shape of the stator is guided and machined through the molded line of the inner mold core, and the outer surface shape of the stator is guided and machined through the molded line of the outer mold sleeve; before being processed, the blank pipe is heated and softened by the heating coil, then penetrates into the outer die sleeve, and is extruded by the inner die core and the rotating outer die sleeve, so that the processing method meets the requirement of simultaneously processing the inner surface and the outer surface of the stator, the processing precision and the processing efficiency are improved, and the processing procedure is simplified.

Description

Technical Field

[0001] The invention relates to the field of stator processing, and in particular to a shrink tube type screw drill stator processing and molding device. Background Art

[0002] When conducting underground drilling operations, screw drill tools are needed to provide power for drilling activities to complete the overall drilling work. The core part of the screw drill tool is mainly composed of a stator and a rotor. Its working principle is to use the rotation of the rotor and the stator to form multiple different sealed cavities. The sealed cavity moves axially from the suction end to the discharge end, allowing the medium to move along this path.

[0003] For a tubular stator having a spiral shape with a certain thickness inside and a spiral shape with a certain thickness corresponding to the inside, its processing is mainly through milling and electrolytic forming, but this can only process the stator into a required shape without guaranteeing the accuracy. As a result, the sealed cavity formed by the stator and the rotor cannot be guaranteed, thus affecting the drilling operation. Summary of the invention

[0004] The object of the present invention is to provide a tube-shrinking screw drill stator processing and forming device to alleviate the technical problem of low stator processing accuracy in the related art.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0006] The present invention provides a shrink tube type screw drill stator processing and forming device, comprising: a bed and a forming assembly and a front end tube pushing assembly distributed along the length direction of the bed, wherein the forming assembly comprises an inner mold core, an outer film sleeve, a heating coil and an outer film sleeve supporting and driving mechanism;

[0007] The inner mold core and the outer film sleeve are distributed in a straight line, and the axes of the two coincide with each other. One end of the inner mold core is connected to the front push tube assembly, and an outer mold line consistent with the inner wall mold line of the finished stator is arranged on the side.

[0008] The front end push tube assembly is used for detachably connecting with the pipe, and for driving the inner mold core and the pipe to move along the length direction of the bed so as to pass through the outer film sleeve;

[0009] The inner hole of the outer film sleeve is provided with an inner mold line consistent with the outer wall mold line of the finished stator;

[0010] The heating coil is used to be sleeved on the pipe and is arranged on the end surface of the outer membrane sleeve close to the front end push tube assembly;

[0011] The outer membrane sleeve supporting driving mechanism is in driving connection with the outer membrane sleeve to drive the outer membrane sleeve to rotate around its own axis.

[0012] Furthermore, the outer film sleeve supporting driving mechanism includes a connecting sleeve, a driven gear, a driving gear, a forming driving motor and a first reducer;

[0013] The outer membrane sleeve is fixedly connected to the connecting sleeve;

[0014] The connecting sleeve is used to pass the pipe and is rotatably matched with the bed so as to be rotatable around its own axis;

[0015] The driven gear meshes with the driving gear, is sleeved on the connecting sleeve, and is key-connected with the connecting sleeve;

[0016] The molding drive motor is fixed to the bed and connected to the first reducer via a coupling, and the output shaft of the first reducer is connected to the driving gear.

[0017] Furthermore, the front end tube pushing assembly includes a tube end fixing mechanism and a pushing driving mechanism;

[0018] The pipe end fixing mechanism comprises a fixing seat and a three-jaw chuck, wherein the fixing seat is threadedly connected to the inner mold core, and the three-jaw chuck is fixed to the fixing seat for clamping the pipe and also for penetrating the inner mold core;

[0019] The push drive mechanism is in driving connection with the fixing seat to drive the fixing seat to move toward or away from the outer membrane sleeve.

[0020] Furthermore, the push drive mechanism includes a front-end mobile platform and a platform drive mechanism;

[0021] The fixing seat is fixed to the front moving platform, and the front moving platform is slidably matched with the bed;

[0022] The platform driving mechanism is drivingly connected to the front movable platform to drive the front movable platform to slide along the length direction of the bed.

[0023] Furthermore, the shrink-tube screw drill stator processing and molding equipment also includes a rear end tube drawing assembly, which is arranged on the bed and is located on a side of the molding assembly away from the front end tube pushing assembly;

[0024] The rear end tube drawing assembly includes a rear end moving platform, a bidirectional spindle clamping seat, a linear drive, and a clamping seat rotation driving mechanism;

[0025] The rear end mobile platform is slidably matched with the bed;

[0026] The linear drive is in transmission connection with the rear end moving platform to drive the rear end moving platform to slide along the length direction of the bed;

[0027] The bidirectional spindle clamp is used to clamp the pipe and is fixed to the rear end mobile platform;

[0028] The clamp seat rotation driving mechanism is arranged on the rear end moving platform and is transmission-connected with the clamp seat gear of the bidirectional spindle clamp seat to drive the clamp seat gear to rotate.

[0029] Furthermore, the clamping seat rotation driving mechanism includes a rotation driving motor, a second speed reducer and a power output gear;

[0030] The rotary drive motor is connected to the second reducer via a coupling, and the output shaft of the second reducer is connected to the power output gear;

[0031] The power output gear is meshed with the clamping seat gear.

[0032] Furthermore, the shrink-tube screw drill stator processing and forming equipment further includes a front-end branch pipe mechanism, which is arranged on the bed to support the pipe section between the forming assembly and the front-end push pipe assembly;

[0033] The front end branch pipe mechanism includes a supporting roller assembly and a lifting roller assembly;

[0034] Along the length direction of the bed, the supporting roller assembly and the plurality of groups of lifting roller assemblies are distributed at intervals, and the supporting roller assembly is located between the lifting roller assembly and the heating coil.

[0035] Furthermore, the support roller assembly includes a roller support and a supporting roller;

[0036] The roller bracket is fixed to the bed, and the hosting roller is a V-shaped roller, which is rotatably matched with the roller bracket.

[0037] Furthermore, the lifting roller assembly includes a front lifting drive hydraulic cylinder, a first lifting platform, a roller support, and a supporting roller;

[0038] The supporting roller is a V-shaped roller, which is rotatably matched with the supporting roller bracket;

[0039] The roller bracket is fixed to the first lifting platform;

[0040] The front lifting drive hydraulic cylinder is fixed to the bed, and the push rod end of the front lifting drive hydraulic cylinder is fixedly connected to the first lifting platform.

[0041] Further, the stator processing and forming equipment for the telescopic type screw drill also includes a rear branch pipe mechanism. There are multiple groups of the rear branch pipe mechanisms, and the multiple groups of rear branch pipe mechanisms are arranged on the bed at intervals along the length direction of the bed to clamp and support the formed section of the pipe.

[0042] The rear branch pipe mechanism includes a portal bracket, a rear lifting drive hydraulic cylinder, and an upper bracket, a lower bracket, upper rollers, lower rollers, and a second lifting platform inside the portal bracket.

[0043] The portal bracket is fixed to the bed.

[0044] The rear lifting drive hydraulic cylinder is fixed to the portal bracket, and its push rod passes through the portal bracket and is fixedly connected to the second lifting platform.

[0045] The upper bracket is fixedly connected to the second lifting platform, and the lower bracket is fixed to the bed.

[0046] Both the upper rollers and the lower rollers are V-shaped rollers. They are arranged oppositely and enclose a receiving space for passing through the pipe. And they are respectively rotatably connected to the upper bracket and the lower bracket.

[0047] Based on the above technical solutions, the technical effects that the stator processing and forming equipment for the telescopic type screw drill provided by the present invention can achieve are as follows:

[0048] In this stator processing and forming equipment for the telescopic type screw drill, a pipe is sleeved on the inner mold core, and one end of the inner mold core is connected to the front push pipe assembly. The front push pipe assembly is used for detachably connecting with the pipe and for driving the inner mold core and the pipe to move along the length direction of the bed. After the heating coil is powered on, the front push pipe assembly can push the pipe and the inner mold core to slowly move towards the heating coil. At the same time, the outer film sleeve support drive mechanism drives the outer film sleeve to rotate around its own axis. When the pipe passes through the outer film sleeve, it is first heated by the heating coil. The heated and softened part of the pipe enters the inner hole of the outer film sleeve and is extruded with the inner mold core to extrude a profile line on the pipe wall, and the formed part of the pipe is conveyed backward.

[0049] It can be seen that compared with the prior art, this stator processing and forming equipment for the telescopic type screw drill realizes the processing of the inner and outer surfaces of the stator by extrusion. Among them, the shape of the inner surface of the stator is guided and processed by the profile line of the inner mold core, and the shape of the outer surface is guided and processed by the profile line of the outer film sleeve. Before the blank pipe is processed, it is first heated and softened by the heating coil and then inserted into the outer film sleeve, and is extruded by the inner mold core and the rotating outer film sleeve. This processing method realizes the requirement of simultaneously processing the inner and outer surfaces of the stator, improves the processing accuracy and processing efficiency, and simplifies the processing process. Description of the Drawings

[0050] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0051] Figure 1 Schematic structural diagram of the stator processing and forming equipment for the telescopic type screw drill provided by the embodiment of the present invention;

[0052] Figure 2 For Figure 1 front view;

[0053] Figure 3 Partial cross-sectional view of the pipe end fixing mechanism provided by the embodiment of the present invention;

[0054] Figure 4 Schematic structural diagram of the lifting roller assembly provided by the embodiment of the present invention;

[0055] Figure 5 Half cross-sectional view of the forming assembly provided by the embodiment of the present invention;

[0056] Figure 6 Schematic structural diagram of the outer membrane sleeve provided by the embodiment of the present invention;

[0057] Figure 7 Schematic structural diagram of the inner mold core provided by the embodiment of the present invention;

[0058] Figure 8 Schematic structural diagram of the rear end branch pipe mechanism provided by the embodiment of the present invention;

[0059] Figure 9 Schematic structural diagram of the two-way main shaft clamp provided by the embodiment of the present invention.

[0060] Icon: 1 - Bed;

[0061] 2 - Front end push pipe assembly; 2.1 - Front end moving platform; 2.2 - Moving drive motor; 2.3 - Transmission lead screw; 2.4 - First guiding optical bar; 2.5 - Lead screw box; 2.6 - Fixed seat; 2.7 - Three-jaw chuck;

[0062] 3 - Front end branch pipe mechanism; 3.1 - Supporting roller; 3.2 - Roller support; 3.3 - First lifting platform; 3.4 - Front lifting drive hydraulic cylinder;

[0063] 4 - Pipe;

[0064] 5 - Forming Assembly; 5.1 - Forming Drive Motor; 5.2 - Driven Gear; 5.3 - Heating Coil; 5.4 - Driving Gear; 5.5 - Outer Membrane Sleeve; 5.6 - Connecting Sleeve; 5.7 - Inner Die Core; 5.8 - First Reducer; 5.7.1 - Threaded Head Portion

[0065] 6 - Rear End Branch Pipe Mechanism; 6.1 - Rear Lifting Drive Hydraulic Cylinder; 6.2 - Second Lifting Table; 6.3 - Upper Roller; 6.4 - Upper Bracket; 6.5 - Lower Roller; 6.6 - Lower Bracket; 6.7 - Gantry Bracket

[0066] 7 - Rear End Pipe Pulling Assembly; 7.1 - Motor Bracket; 7.2 - Second Reducer; 7.3 - Power Output Gear; 7.4 - Rotary Drive Motor; 7.5 - Two - way Spindle Clamp; 7.6 - Rear End Moving Platform; 7.7 - Drive Cylinder; 7.8 - Second Guide Screw; 7.9 - Screw Support; 7.10 - Hinge Seat; 7.5.1 - Clamp Gear Detailed Implementation Modes

[0067] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0068] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0069] The following will describe in detail some embodiments of the present invention in conjunction with the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0070] For a tubular stator with a spiral shape of a certain thickness inside and a spiral shape of a certain thickness corresponding to the inside outside, its processing is mainly through milling and electrolysis for forming processing. However, this can only process the stator into the required shape and cannot guarantee the accuracy. As a result, the sealed cavity formed by the cooperation of the stator and the rotor cannot be guaranteed, thus affecting the drilling operation.

[0071] In view of this, the present invention provides a forming equipment for a stator of a telescopic type screw drill, including a bed body 1, a forming assembly 5 and a front end push tube assembly 2 distributed along the length direction of the bed body 1. The forming assembly 5 includes an inner die core 5.7, an outer die sleeve 5.5, a heating coil 5.3 and a support driving mechanism for the outer die sleeve 5.5. The inner die core 5.7 and the outer die sleeve 5.5 are linearly distributed, and their axes coincide. One end of the inner die core 5.7 is connected to the front end push tube assembly 2, and the side is provided with an outer profile line consistent with the inner wall profile of the finished stator. The front end push tube assembly 2 is used for detachably connecting with a pipe 4, and is used for driving the inner die core 5.7 and the pipe 4 to move along the length direction of the bed body 1 so as to pass through the outer die sleeve 5.5. The inner hole of the outer die sleeve 5.5 is provided with an inner profile line consistent with the outer wall profile of the finished stator. The heating coil 5.3 is used for sleeving on the pipe 4 and is arranged on the end face of the outer die sleeve 5.5 close to the front end push tube assembly 2. The support driving mechanism of the outer die sleeve 5.5 is in transmission connection with the outer die sleeve 5.5 to drive the outer die sleeve 5.5 to rotate around its own axis.

[0072] In this forming equipment for a stator of a telescopic type screw drill, the inner die core 5.7 is used for sleeving the pipe 4, one end of which is connected to the front end push tube assembly 2. The front end push tube assembly 2 is used for detachably connecting with the pipe 4 and is used for driving the inner die core 5.7 and the pipe 4 to move along the length direction of the bed body 1. After the heating coil 5.3 is powered on, the front end push tube assembly 2 can push the pipe 4 and the inner die core 5.7 to slowly move towards the heating coil 5.3, and at the same time, the support driving mechanism of the outer die sleeve 5.5 drives the outer die sleeve 5.5 to rotate around its own axis. When the pipe 4 passes through the outer die sleeve 5.5, it is first heated by the heating coil 5.3. The heated and softened part of the pipe 4 enters into the inner hole of the outer die sleeve 5.5, and under the combined action of the outer die sleeve 5.5 and the inner die core 5.7, a profile line is extruded on the pipe wall of the pipe 4, and the formed part of the pipe 4 is conveyed backward.

[0073] It can be seen that compared with the prior art, this forming equipment for a stator of a telescopic type screw drill realizes the processing of the inner and outer surfaces of the stator by extrusion. Among them, the shape of the inner surface of the stator is guided by the profile line of the inner die core 5.7 for processing, and the shape of the outer surface is guided by the profile line of the outer die sleeve 5.5 for processing. Before the blank pipe is processed, it is first heated and softened by the heating coil 5.3, and then inserted into the outer die sleeve 5.5, and is extruded by the inner die core 5.7 and the rotating outer die sleeve 5.5. This processing method realizes the requirement of simultaneous processing of the inner and outer surfaces of the stator, improves the processing accuracy and processing efficiency, and simplifies the processing procedure.

[0074] The following combines Figures 1 to 9 to detail the structure and shape of the forming equipment for a stator of a telescopic type screw drill provided in this embodiment:

[0075] Refer to Figures 1 to 9, the stator processing and forming equipment for the telescopic type screw drill provided in this embodiment is used to process a cylindrical pipe 4 into a stator with spiral protrusions arranged on the outside and corresponding spiral grooves arranged on the inside. The forming equipment includes: a bed body 1, a front end pipe pushing assembly 2, a front end branch pipe mechanism 3, a forming assembly 5, a rear end branch pipe mechanism 6, and a rear end pipe pulling assembly 7. The front end pipe pushing assembly 2, the front end branch pipe mechanism 3, the forming assembly 5, the rear end branch pipe mechanism 6, and the rear end pipe pulling assembly 7 are all installed on the bed body 1.

[0076] Regarding the front end pipe pushing assembly 2, specifically:

[0077] Refer to Figure 1 and Figure 2 , the front end pipe pushing assembly 2 includes a pipe end fixing mechanism and a pushing driving mechanism. Among them, the pipe end fixing mechanism includes a fixing seat 2.6 and a three-jaw chuck 2.7, and the pushing driving mechanism includes a front end moving platform 2.1 and a platform driving mechanism.

[0078] Continuing from the above, the front end moving platform 2.1 is slidably installed above the front part of the bed body 1 in the front-rear direction of the bed body 1. To ensure the position accuracy of the front end moving platform 2.1 moving in the front-rear direction, a V-shaped protrusion is provided on one side of the lower part of the front end moving platform 2.1, and a V-shaped guiding groove is provided on the bed body 1 at the position corresponding to the V-shaped protrusion. The V-shaped protrusion is embedded into the V-shaped guiding groove; at the same time, a square protrusion is provided on the other side of the lower part of the front end moving platform 2.1, and a square groove is provided on the bed body 1 at the position corresponding to the square protrusion. The square protrusion is embedded into the square groove.

[0079] Continuing from the above, the platform driving mechanism adopts a lead screw-nut matching mechanism, which mainly includes a lead screw box 2.5, a transmission lead screw 2.3, two first guiding optical bars 2.4, and a moving driving motor 2.2. The lead screw box 2.5 is arranged on one side of the front part of the bed body 1, and the lead screw box 2.5 is fixedly connected to one side of the front end moving platform 2.1; a threaded hole and two guiding optical holes are provided on the lead screw box 2.5. The lead screw box 2.5 is matched with the transmission lead screw 2.3 through the threaded hole and is respectively matched with the two guiding lead screws through the two guiding optical holes; lateral supporting plates are respectively arranged at both ends of the transmission lead screw 2.3 and the two guiding optical bars. Both ends of the transmission lead screw 2.3 are rotatably placed on the lateral supporting plates at both ends, and both ends of the two guiding optical bars are respectively fixed on the lateral supporting plates at both ends; the moving driving motor 2.2 is drivingly connected to one end of the transmission lead screw through a coupling.

[0080] Continuing from the above, the fixing seat 2.6 is installed at the upper end of the front end moving platform 2.1. The rear end of the fixing seat 2.6 is fixedly connected to the chuck body of the three-jaw chuck 2.7; the three-jaw chuck 2.7 is used to clamp and fix the front end of the pipe 4; a threaded hole is provided on the fixing seat 2.6 at the position corresponding to the center of the three-jaw chuck 2.7 for fixedly connecting with the front end of the inner die core 5.7 of the forming assembly 5.

[0081] Regarding the front branch pipe mechanism 3, specifically:

[0082] Referring to Figure 1 、 Figure 2 and Figure 4 , the front branch pipe mechanism 3 is used to support the to-be-formed and processed part of the pipe 4, and includes multiple groups of lifting roller assemblies with adjustable support height and a set of support roller assemblies with fixed height. The multiple groups of lifting roller assemblies are arranged in sequence front and back along the axial direction of the pipe 4 at a certain interval, and the support roller assemblies are arranged at the rear position of the last group of lifting roller assemblies.

[0083] Continuing from the above, each group of lifting roller assemblies includes a front lifting drive hydraulic cylinder 3.4, a first lifting platform 3.3, a roller support bracket 3.2, and a carrier roller 3.1; the front lifting drive hydraulic cylinder 3.4 is vertically and fixedly installed on the bed 1, and the first lifting platform 3.3 is fixedly installed at the upper push rod end of the front lifting drive hydraulic cylinder 3.4; the roller support bracket 3.2 is composed of two parallel vertical frames, and the two vertical frames are fixedly installed in parallel at the upper end of the first lifting platform 3.3; the carrier roller 3.1 is rotatably installed at the upper ends of the two vertical frames through the roller shafts at both ends, and the carrier roller 3.1 is a V-shaped roller, and the pipe 4 is supported by the carrier roller 3.1.

[0084] Continuing from the above, the support roller assembly is composed of a roller support bracket 3.2 and a carrier roller 3.1. The roller support bracket 3.2 also adopts the structure form of two vertical frames, and the lower ends of the two vertical frames are directly fixedly connected to the bed 1; the carrier roller 3.1 is also rotatably installed at the upper ends of the two vertical frames through the roller shafts at both ends, and the carrier roller 3.1 is also a V-shaped roller, and the pipe 4 is supported by the carrier roller 3.1.

[0085] Regarding the forming assembly 5, specifically:

[0086] Referring to Figure 1 、 Figure 2 and Figures 5 to 7 , the forming assembly 5 is used to form an external spiral protrusion and an internal spiral groove on the pipe 4 to realize stator forming processing. Its outer film sleeve 5.5 support drive mechanism includes a connecting sleeve 5.6, a driven gear 5.2, a driving gear 5.4, a forming drive motor 5.1, and a first reducer 5.8.

[0087] Continuing from the above, the forming drive motor 5.1 is fixedly installed at the middle position of the bed body 1 and is connected to the first reducer 5.8 through a coupling. The driving gear 5.4 is installed on the output shaft of the first reducer 5.8, and the driving gear 5.4 is a small gear; the driven gear 5.2 is coaxially sleeved on the connecting sleeve 5.6, and the driven gear 5.2 is connected to the connecting sleeve 5.6 through a key and is positioned by the shoulder on the connecting sleeve 5.6. The driven gear 5.2 is a large gear and meshes with the driving gear 5.4; the connecting sleeve 5.6 is rotatably supported on the bearing support through bearings, and the bearing support is fixedly installed on the front bed body 1; the outer film sleeve 5.5 is fixedly installed at the front end of the connecting sleeve 5.6 through screws, and the shape of its inner hole is manufactured according to the outer wall profile of the finished stator. The profile of the outer film sleeve 5.5 can be machined by a milling machine and is smaller than the profile length on the inner die core 5.7; the inner die core 5.7 is composed of a threaded head part 5.7.1, a smooth rod part and a profile part. The length and size of the threaded head part 5.7.1 match the size and length of the threaded hole on the fixed seat 2.6. The smooth rod part is used to pass through the inner hole of the three-jaw chuck 2.7, its outer diameter is smaller than the inner diameter of the pipe 4, and its length is slightly greater than the thickness of the three-jaw chuck 2.7. The profile part is the core part of the inner die core 5.7, and this part is consistent with the inner wall shape of the finished stator. The front threaded head part 5.7.1 of the inner die core 5.7 forms a threaded connection with the threaded hole of the fixed seat 2.6. The inner die core 5.7 is arranged inside the pipe 4, and its rear end extends to a position close to the rear end of the pipe 4.

[0088] Continuing from the above, the above is the necking processing of the pipe 4. A guide cone head is prefabricated at the rear end of the pipe 4 to realize the smooth introduction of the pipe 4 from the front end of the outer film sleeve 5.5. The heating coil 5.3 is coaxially arranged at the front end of the outer film sleeve 5.5, which can be realized by installing a bracket for supporting the coil on the bed body 1. The inner diameter of the heating coil 5.3 is larger than the outer diameter of the pipe 4 to realize the smooth passage of the pipe 4 through the heating coil 5.3.

[0089] Regarding the rear branch pipe mechanism 6, specifically:

[0090] Refer to Figure 1 、 Figure 2 and Figure 8 The rear branch pipe mechanism 6 is used for clamping and supporting the forming part of the pipe 4. There are multiple groups of the rear branch pipe mechanism 6, and at least two groups are respectively arranged at the front and rear parts of the rear pipe pulling assembly 7, and multiple groups of the rear branch pipe mechanism 6 are arranged in sequence along the front and rear directions of the bed body 1.

[0091] Continuing from the above, each set of rear branch pipe mechanisms 6 includes a portal bracket 6.7, a lower bracket 6.6, lower roller wheels 6.5, an upper bracket 6.4, upper roller wheels 6.3, a second lifting platform 6.2, and a rear lifting drive hydraulic cylinder 6.1; the lower bracket 6.6, lower roller wheels 6.5, upper bracket 6.4, upper roller wheels 6.3, and second lifting platform 6.2 are all arranged inside the portal bracket 6.7; the rear lifting drive hydraulic cylinder 6.1 is vertically and fixedly installed at the top of the portal bracket 6.7, and its push rod passes through a through hole provided at the top of the portal bracket 6.7 and extends into the portal bracket 6.7; the lower bracket 6.6 is fixedly installed at the rear position of the bed 1, and the lower roller wheels 6.5 are rotatably supported on the upper part of the lower bracket 6.6 through roller shafts at both ends; the upper part of the upper bracket 6.4 is fixedly connected to the lifting platform, the upper roller wheels 6.3 are arranged opposite to the lower roller wheels 6.5, the upper roller wheels 6.3 are rotatably supported on the lower part of the upper bracket 6.4 through roller shafts at both ends, and both the upper roller wheels 6.3 and the lower roller wheels 6.5 are V-shaped rollers; the second lifting platform 6.2 is fixedly connected to the push rod end of the rear lifting drive hydraulic cylinder 6.1.

[0092] With the above design, the upper and lower roller wheels clamp the forming part of the pipe 4, which improves the stability of the pipe 4 during transportation while ensuring the backward transportation of the pipe 4, and avoids affecting the forming of the pipe 4 due to insufficient clamping force at one end.

[0093] Regarding the rear pipe pulling assembly 7, specifically:

[0094] Refer to Figure 1 、 Figure 2 and Figure 9 When the front pipe pushing assembly 2 moves to a position where it can no longer transport the pipe 4 backward, the three-jaw chuck 2.7 is released, and through this rear pipe pulling assembly 7, the continuous backward transportation of the pipe 4 is realized, so as to complete the forming process of the entire pipe 4 except for the conical head part at the rear end.

[0095] Continuing from the above, the rear pipe pulling assembly 7 includes a rear moving platform 7.6, a two-way main shaft chuck 7.5, a linear drive, a chuck rotation drive mechanism, and a platform guiding mechanism. Among them, the linear drive can adopt a drive cylinder 7.7. The platform guiding mechanism includes two second guiding optical bars 7.8 on the left and right. The two second guiding optical bars 7.8 are fixedly installed on the optical bar support 7.9. The rear moving platform 7.6 is movably installed on the two guiding optical bars in the front-rear direction through two guiding holes on the left and right. The drive cylinder 7.7 is installed behind the rear moving platform 7.6 through a cylinder support. The front push rod end of the drive cylinder 7.7 is connected to a hinge seat 7.10 fixed to the rear end of the rear moving platform 7.6. The two-way main shaft chuck 7.5 is fixedly installed at the upper end of the rear moving platform 7.6. The two-way main shaft chuck 7.5 is an existing structure used on a machine tool. The chuck rotation drive mechanism includes a rotation drive motor 7.4, a second reducer 7.2, and a power output gear 7.3. Among them, the rotation drive motor 7.4 and the second reducer 7.2 are installed and fixed on the motor support 7.1 at the upper end of the rear moving platform 7.6. The rotation drive motor 7.4 is connected to the second reducer 7.2. The output end of the second reducer 7.2 is fixedly connected to the power output gear 7.3. The power output gear 7.3 meshes with the chuck gear 7.5.1 of the two-way main shaft chuck 7.5 to realize the input of rotational power.

[0096] Continuing from the above, the two-way main shaft chuck 7.5 and the chuck rotation drive mechanism in the rear pipe pulling assembly 7 cooperate with the front pipe pushing assembly 2 to realize the withdrawal of the inner die core 5.7 from the inner hole of the finished stator after the pipe 4 is processed and formed, and realize the separation of the finished stator and the inner die core 5.7.

[0097] The working process of the pipe-reducing type screw drill stator processing and forming equipment provided in this embodiment is as follows:

[0098] First, move the front moving platform forward to a position where the distance between the three-jaw chuck 2.7 and the heating coil 5.3 is greater than the length of the pipe 4 to be processed, and leave enough space for installing the pipe 4 and the inner die core 5.7. Then fix the front ends of the pipe 4 and the inner die core 5.7 sleeved together. Specifically, first connect the front threaded head part 5.7.1 of the inner die core 5.7 to the threaded hole on the fixed seat 2.6. For convenient connection, a clamping surface convenient for wrench clamping can be set on the smooth rod section of the inner die core 5.7. Then insert the front end of the pipe 4 into the jaws of the three-jaw chuck 2.7, and lock the three-jaw chuck 2.7 to fix the pipe 4. At this time, all groups of lifting roller assemblies are at a high position, and the pipe 4 is supported on the rollers of all groups of lifting roller assemblies and the rollers of the support roller assembly.

[0099] Continuing from the above, the heating coil 5.3 is energized, and then the moving drive motor 2.2 and the forming drive motor 5.1 are started. The front push tube assembly 2 pushes the pipe 4 and the inner die core 5.7 to move slowly backward. At the same time, the outer film sleeve 5.5 rotates. The rear end of the pipe 4 is first heated by the heating coil 5.3. The softened part of the pipe 4 enters the inner hole of the outer film sleeve 5.5 under the action of the rear guide cone head. Under the combined action of the outer film sleeve 5.5 and the inner die core 5.7, a profile is extruded on the wall of the pipe 4. The formed part of the pipe 4 is conveyed backward, and continues to be conveyed backward through the upper and lower rollers of the rear end branch pipe mechanism 6 at the rear, and passes through the inner hole of the two-way main shaft chuck 7.5.

[0100] Continuing from the above, when the three-jaw chuck 2.7 moves to a position close to the front end of the support roller assembly, it is detected by the detection element set at this position; the two-way main shaft chuck 7.5 acts to clamp and fix the pipe 4. Then the three-jaw chuck 2.7 is released, the moving drive motor 2.2 stops, and at the same time, the drive cylinder 7.7 and the rotary drive motor 7.4 act to drive the rear moving platform 7.6 to move backward, so as to drive the pipe 4 to continue to move backward through the two-way main shaft chuck 7.5 and make the pipe 4 rotate; when the front end of the pipe 4 completely extends out from the rear end of the forming assembly 5, the whole pipe 4 is processed, and the drive cylinder 7.7 stops acting.

[0101] Continuing from the above, the rotary drive motor 7.4 continues to operate, and at the same time, the moving drive motor 2.2 is started in reverse. The finished stator is rotated through the two-way main shaft chuck 7.5, and at the same time, the inner die core 5.7 is driven to move forward through the fixed seat 2.6, so that the inner die core 5.7 gradually withdraws from the finished stator; when the rear end of the inner die core 5.7 moves to the front end of the heating coil 5.3, the inner die core 5.7 withdraws in place, and the rotary drive motor 7.4 and the moving drive motor 2.2 are stopped. At this time, the two-way main shaft chuck 7.5 can be released, and multiple upper roller wheels 6.3 are lifted to take down the finished stator to complete the processing.

[0102] The advantages and positive effects of the present invention are as follows:

[0103] Through the cooperation of the front push tube assembly 2, the front end branch pipe mechanism 3, the forming assembly 5, the rear end branch pipe mechanism 6 and the rear end pipe pulling assembly 7, the present invention realizes the extrusion molding of the pipe 4 during the conveying process through the rotation of the outer film sleeve 5.5 and the cooperation with the inner die core 5.7.

[0104] The present invention realizes the processing of the inner and outer surfaces of the stator by extrusion. Among them, the shape of the inner surface of the stator is guided by the profile of the inner die core 5.7 for processing, and the shape of the outer surface is guided by the profile of the outer die sleeve 5.5 for processing. Before the blank tube is processed, it is first heated and softened by the heating coil 5.3, and then the guiding part of the inner die core 5.7 is sleeved onto the inner mold, and at the same time, it is extruded by the outer mold. This processing method realizes the requirement of simultaneous processing of the inner and outer surfaces of the stator, improves the processing accuracy and efficiency, and simplifies the processing procedure.

[0105] In summary, the stator processes the shapes of the inner and outer surfaces through the cooperation of the inner die core 5.7 and the outer die sleeve 5.5, ensuring the accuracy, reducing the processing time, and having auxiliary support throughout the overall processing process, guaranteeing the processing accuracy of the entire processing process, achieving a better processing effect, and the forming equipment is reasonably arranged with a simple and compact overall structure.

[0106] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stator processing and forming device for a telescopic type screw drill, characterized in that, Comprising: A bed body (1), a forming assembly (5) and a front-end push tube assembly (2) distributed along the length direction of the bed body (1). The forming assembly (5) includes an inner die core (5.7), an outer die sleeve (5.5), a heating coil (5.3) and an outer die sleeve support and drive mechanism; The inner die core (5.7) and the outer die sleeve (5.5) are linearly distributed, and their axes coincide. One end of the inner die core (5.7) is connected to the front-end push tube assembly (2), and the side is provided with an outer profile line consistent with the inner wall profile of the finished stator; The front-end push tube assembly (2) is used for detachably connecting with a pipe (4), and is used for driving the inner die core (5.7) and the pipe (4) to move along the length direction of the bed body (1) so as to penetrate through the outer die sleeve (5.5); The inner hole of the outer die sleeve (5.5) is provided with an inner profile line consistent with the outer wall profile of the finished stator; The heating coil (5.3) is used for sleeving on the pipe (4) and is arranged on the end face of the outer die sleeve (5.5) close to the front-end push tube assembly (2); The outer die sleeve support and drive mechanism is in transmission connection with the outer die sleeve (5.5) to drive the outer die sleeve (5.5) to rotate around its own axis.

2. The stator processing and forming equipment for the telescopic type positive displacement motor drill according to claim 1, wherein, The outer die sleeve support and drive mechanism includes a connecting sleeve (5.6), a driven gear (5.2), a driving gear (5.4), a forming drive motor (5.1) and a first reducer (5.8); The outer die sleeve (5.5) is fixedly connected to the connecting sleeve (5.6); The connecting sleeve (5.6) is used for passing through the pipe (4) and is rotationally matched with the bed body (1) to be able to rotate around its own axis; The driven gear (5.2) is meshed with the driving gear (5.4), sleeved on the connecting sleeve (5.6), and is key-connected to the connecting sleeve (5.6); The forming drive motor (5.1) is fixed on the bed body (1) and is connected to the first reducer (5.8) through a coupling, and the output shaft of the first reducer (5.8) is connected to the driving gear (5.4).

3. The stator processing and forming equipment for the telescopic type positive displacement motor drill according to claim 1, wherein The front-end push tube assembly (2) includes a pipe end fixing mechanism and a pushing drive mechanism; The pipe end fixing mechanism includes a fixing seat (2.6) and a three-jaw chuck (2.7). Among them, the fixing seat (2.6) is threadedly connected to the inner die core (5.7), and the three-jaw chuck (2.7) is fixed to the fixing seat (2.6) for clamping the pipe (4) and also for passing through the inner die core (5.7); The pushing drive mechanism is in transmission connection with the fixing seat (2.6) to drive the fixing seat (2.6) to move in a direction close to or away from the outer die sleeve (5.5).

4. The stator processing and forming equipment for the telescopic type positive displacement motor drill according to claim 3, characterized in that, The pushing drive mechanism includes a front-end moving platform (2.1) and a platform drive mechanism; The fixing seat (2.6) is fixed to the front-end moving platform (2.1), and the front-end moving platform (2.1) is slidably matched with the bed body (1); The platform driving mechanism is in transmission connection with the front-end moving platform (2.1) to drive the front-end moving platform (2.1) to slide along the length direction of the bed body (1).

5. The stator processing and forming equipment for the telescopic type positive displacement motor drill according to any one of claims 1 to 4, characterized in that, The stator processing and forming equipment for the telescopic pipe screw drill also includes a rear-end pipe pulling assembly (7). The rear-end pipe pulling assembly (7) is arranged on the bed body (1) and is on the side of the forming assembly (5) away from the front-end pipe pushing assembly (2). The rear-end pipe pulling assembly (7) includes a rear-end moving platform (7.6), a two-way spindle clamp seat (7.5), a linear driver, and a clamp seat rotation driving mechanism. The rear-end moving platform (7.6) is in sliding fit with the bed body (1). The linear driver is in transmission connection with the rear-end moving platform (7.6) to drive the rear-end moving platform (7.6) to slide along the length direction of the bed body (1). The two-way spindle clamp seat (7.5) is used for clamping the pipe (4) and is fixed to the rear-end moving platform (7.6). The clamp seat rotation driving mechanism is arranged on the rear-end moving platform (7.6) and is in transmission connection with the clamp seat gear (7.5.1) of the two-way spindle clamp seat (7.5) to drive the clamp seat gear (7.5.1) to rotate.

6. The stator processing and forming equipment for the telescopic type positive displacement motor drill according to claim 5, wherein, The clamp seat rotation driving mechanism includes a rotation driving motor (7.4), a second reducer (7.2), and a power output gear (7.3). The rotation driving motor (7.4) is connected to the second reducer (7.2) through a coupling, and the output shaft of the second reducer (7.2) is connected to the power output gear (7.3). The power output gear (7.3) meshes with the clamp seat gear (7.5.1).

7. The stator processing and forming equipment for the telescopic type positive displacement motor drill according to claim 5, characterized in that, The stator processing and forming equipment for the telescopic pipe screw drill also includes a front-end branch pipe mechanism (3). The front-end branch pipe mechanism (3) is arranged on the bed body (1) to support the pipe section between the forming assembly (5) and the front-end pipe pushing assembly (2). The front-end branch pipe mechanism (3) includes a support roller assembly and a lifting roller assembly. Along the length direction of the bed body (1), the support roller assembly and multiple groups of the lifting roller assemblies are distributed at intervals, and the support roller assembly is between the lifting roller assembly and the heating coil (5.3).

8. The stator processing and forming equipment for the telescopic type positive displacement motor drill according to claim 7, wherein, The support roller assembly includes a roller support (3.2) and a support roller (3.1). The roller support (3.2) is fixed to the bed body (1), and the support roller (3.1) is a V-shaped roller and is in rotational fit with the roller support (3.2).

9. The stator processing and forming equipment for the telescopic type positive displacement motor drill according to claim 7, wherein, The lifting roller assembly includes a front lifting drive hydraulic cylinder (3.4), a first lifting platform (3.3), a roller support (3.2), and a support roller (3.1). The support roller (3.1) is a V-shaped roller and is in rotational fit with the roller support (3.2). The roller support (3.2) is fixed to the first lifting platform (3.3). The front lifting drive hydraulic cylinder (3.4) is fixed to the bed body (1), and its push rod end is fixedly connected to the first lifting platform (3.3).

10. The stator processing and forming equipment for the telescopic type positive displacement motor drill according to claim 5, characterized in that, The stator processing and forming equipment of the telescopic type screw drill also includes a rear branch pipe mechanism (6). There are multiple groups of the rear branch pipe mechanisms (6), and the multiple groups of the rear branch pipe mechanisms (6) are arranged on the bed (1) at intervals along the length direction of the bed (1) for clamping and supporting the forming section of the pipe (4). The rear branch pipe mechanism (6) includes a portal bracket (6.7), a rear lifting drive hydraulic cylinder (6.1), and an upper bracket (6.4), a lower bracket (6.6), upper rollers (6.3), lower rollers (6.5) and a second lifting platform (6.2) located within the portal bracket (6.7). The portal bracket (6.7) is fixed to the bed (1). The rear lifting drive hydraulic cylinder (6.1) is fixed to the portal bracket (6.7), and its push rod passes through the portal bracket (6.7) and is fixedly connected to the second lifting platform (6.2). The upper bracket (6.4) is fixedly connected to the second lifting platform (6.2), and the lower bracket (6.6) is fixed to the bed (1). Both the upper rollers (6.3) and the lower rollers (6.5) are V-shaped rollers. They are arranged oppositely and enclose a receiving space for passing through the pipe (4), and they are respectively rotatably connected to the upper bracket (6.4) and the lower bracket (6.6).

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