An intermittent spiral tube processing device and its processing method

Abstract

An intermittent spiral tube processing device and processing method, including a base structure (1), characterized in that it further includes an electromagnetic pulse forming structure (2); wherein, the base structure (1) includes a base (101), a bottom plate (102) is fixed on the top of the base (101), a fixed seat (103) is fixed at the rightmost end of the upper surface of the bottom plate (102), a second clamping block (104) is fixed on the left side surface of the fixed seat (103), and the electromagnetic pulse forming structure (2) includes a first seat plate (201), two relatively arranged coil mounting plates (202) are fixed on the upper surface of the first seat plate (201), an insulating positioning ring (203) is installed on one side surface of the coil mounting plate (202), and a positioning tower ring (204) is fixed at the axis center of the insulating positioning ring (203); The invention can complete the processing of the whole process without replacing the mandrel, improving the convenience of spiral tube processing.

Description

Technical Field

[0001] The present invention is a processing device and a processing method for an intermittent spiral pipe, which relates to the technical field of plastic forming of spiral pipes, and particularly relates to a processing device and a processing method for an intermittent spiral pipe. Background Art

[0002] A spiral pipe generally refers to a product with threads on the outer surface of the pipe fitting, and has been widely used in the fields of petrochemical industry, metallurgy, atomic energy, etc. In order to improve the process flexibility of forming and manufacturing, and to meet the requirements of small batches, customization, and diversification, the existing spiral pipes begin to use the electromagnetic pulse forming method to process the spiral pipes.

[0003] The existing published document CN110052526B - A processing device and a processing method for a threaded pipe, including a base, a coil support, two die supports, a driving mechanism, and an electromagnetic pulse forming mechanism. The base is placed on a flat workbench, and the coil support embedded with the coil is slidably arranged on the base. The coil is connected to the electromagnetic pulse forming mechanism through a lead wire. The two die supports are respectively fixedly installed on both sides of the coil support on the base. After the die sleeving the pipe fitting to be processed passes through the coil on the coil support, both ends of the die are placed on the die supports on both sides; the driving mechanism is used to drive the coil support to slide along the guide rail on the base. The processing device and the processing method for the threaded pipe of the present invention use the electromagnetic pulse forming method to process the threaded pipe, improve the process flexibility of the threaded pipe forming and manufacturing, and meet the current requirements of small batches, customization, and diversification. The above patent still has the following deficiencies:

[0004] 1. The device sleeved the pipe fitting into the die and then passed the die through the coil and fixed it on the die support. Secondly, the electromagnetic pulse forming mechanism was used for processing. However, the device can only process a one-to-one pipe fitting with the same thread section as the die. When it is necessary to process other different types and lengths of thread sections, the pipe fitting needs to be sleeved into the corresponding die. This processing method has a cumbersome process, poor convenience, high processing time cost, and after the device finishes processing, it is easy to cause the problem that the pipe fitting and the die are stuck, that is, the concave part of the pipe fitting and the concave part of the die are stuck and difficult to separate, increasing the difficulty of separating the pipe fitting and the die and reducing the work efficiency.

[0005] 2. The thread section processed by the device needs to be based on the die, that is, the pipe fitting and the die can only be processed with the same thread section in a one-to-one manner, and it is difficult to meet the intermittent processing of any length of thread section, and it is difficult to temporarily change the processing strategy of the pipe fitting thread section on the machine tool for variant processing, and the processing limitation is large.

[0006] 3. When the device processes an intermittent spiral pipe, the displacement of the spiral pipe is adjusted manually, and it is impossible to ensure the step accuracy of the thread of each section of the spiral pipe, so it is also impossible to ensure the pitch of the thread of each section of the spiral pipe. Summary of the Invention

[0007] The object of the present invention is to provide a processing device and a processing method for an intermittent spiral tube, so as to solve the problems that the existing spiral tube processing device is difficult to process intermittent thread segments of any length, the die shaft needs to be repeatedly replaced during processing, and it is easy to pinch the tube during processing, resulting in difficulty in separating the spiral tube from the die shaft.

[0008] An intermittent spiral tube processing device includes a base structure 1, and is characterized in that it further includes an electromagnetic pulse forming structure 2; wherein, the base structure 1 includes a base 101, a bottom plate 102 is fixed on the top of the base 101, a fixed seat 103 is fixed on the rightmost end of the upper surface of the bottom plate 102, a second clamping block 104 is fixed on the left side surface of the fixed seat 103, and the electromagnetic pulse forming structure 2 includes a first seat plate 201. Two relatively arranged coil mounting plates 202 are fixed on the upper surface of the first seat plate 201. An insulating positioning ring 203 is installed on one side surface of the coil mounting plate 202. A positioning tower ring 204 is fixed at the axis center of the insulating positioning ring 203. A processing coil 205 is installed at the middle position between two opposite insulating positioning rings 203;

[0009] Limit slots 106 are equidistantly opened on the upper surface of the bottom plate 102, and a rack bar 107 is fixed on the upper surface of the bottom plate 102; the electromagnetic pulse forming structure 2 is slidably connected to the top of the bottom plate 102. First limit plates 3 that cooperate with the limit slots 106 are inserted on both side surfaces of the bottom plate 102 and at the top of the electromagnetic pulse forming structure 2; the first limit plates 3 are used to limit the position of the electromagnetic pulse forming structure 2. One side surface of the first limit plate 3 has a threaded hole and is connected to an adjustable locking handle 4. The position of the electromagnetic pulse forming structure 2 is locked and changed through the adjustable locking handle 4; in short, by changing the positions of the two first limit plates 3 on different limit slots 106, the position of the electromagnetic pulse forming structure 2 is changed, so that the processing coil 205 is located at different positions corresponding to different thread segments on the mandrel 6, and intermittent or continuous processing of different thread segments of the spiral tube 12 to be processed can be carried out;

[0010] A positioning structure 7 is slidably connected to the top of the bottom plate 102. The positioning structure 7 includes a second seat plate 701, and a positioning plate 702 is fixed on the upper surface of the second seat plate 701; a second driving mechanism 10 is installed on the top of the second seat plate 701. The output shaft end of the second driving mechanism 10 penetrates through the second seat plate 701 and is fixed with a gear that is in transmission cooperation with the rack bar 107; a first driving mechanism 8 is installed on one side surface of the positioning plate 702. The output shaft end of the first driving mechanism 8 penetrates through the positioning plate 702 and is fixed with a clamping structure 9.

[0011] The clamping structure 9 applies a circumferential force to the outer surface of the spiral tube 12 to be machined for clamping; the clamping structure 9 includes a rotating column 901 fixedly connected to the output shaft end of the first driving mechanism 8. A fixed disk 902 is fixed to one end of the rotating column 901 away from the first driving mechanism 8. Two ear plates 903 are fixed to one end of the fixed disk 902 away from the rotating column 901. A threaded column 904 threadedly connected to the ear plate 903 penetrates through one surface of the ear plate 903. One end of the threaded column 904 near the axis of the fixed disk 902 is rotatably connected to a V-shaped clamping block 905.

[0012] A mandrel 6 is fixed to the top of the second clamping block 104 through the first clamping block 5. A spiral tube 12 to be machined is sleeved on the outer surface of a section of the mandrel 6 away from the first clamping block 5 and penetrates through the positioning tower ring 204. One end of the spiral tube 12 to be machined near the positioning plate 702 is clamped by the clamping structure 9; in short, the mandrel 6 is a die shaft provided with a threaded section, and the pipe fitting is machined with the mandrel 6 as a reference.

[0013] Two slide rails 105 are fixed to the upper surface of the bottom plate 102. A first sliding pair 206 matched with the slide rail 105 is fixed to the lower surface of the first seat plate 201. A second sliding pair 704 matched with the slide rail 105 is fixed to the lower surface of the second seat plate 701; a scale 110 is fixed to the upper surface of the bottom plate 102. A pointer 705 matched with the scale 110 is fixed to one side surface of the second seat plate 701. A through hole 703 matched with the second driving mechanism 10 is opened on the upper surface of the second seat plate 701; a second limiting plate 109 is fixed to the upper surface of the bottom plate 102 and at a position on one side of the slide rail 105; the axes of the spiral tube 12 to be machined, the positioning tower ring 204, and the mandrel 6 coincide.

[0014] Two mounting brackets 108 are fixed to the top of the bottom plate 102. A distance sensor 11 is installed on the lower surface of the mounting bracket 108. The distance sensor 11 is electrically connected to an external controller, and the distance sensor 11 is used to measure the moving distance of the positioning structure 7.

[0015] During use, first fix one end of the mandrel 6 at the top position of the second clamping block 104 through the first clamping block 5, then pass the blank of the spiral tube 12 to be processed through the outside of the mandrel 6. Secondly, pass the combination of the blank of the spiral tube 12 to be processed and the mandrel 6 through the electromagnetic pulse forming structure 2. Thirdly, adjust the position of the electromagnetic pulse forming structure 2 according to the shape and length processing requirements of the threaded section on the mandrel 6. When adjusting, move the electromagnetic pulse forming structure 2 so that the processing coil 205 surrounds the outside of the threaded section that meets the requirements. Secondly, insert the two first limiting plates 3 into the limiting grooves 106 on both sides of the electromagnetic pulse forming structure 2 respectively, and then use the adjustable positioning set screw handle 4 to pass through one of the first limiting plates 3 to limit and fix the position of the electromagnetic pulse forming structure 2. After the fixation is completed, fix the end of the blank of the spiral tube 12 to be processed away from the first clamping block 5 through the clamping structure 9. Then, start the electromagnetic pulse forming structure 2, use the first driving mechanism 8 to drive the clamping structure 9 to rotate, and then drive the blank of the spiral tube 12 to be processed to rotate. Use the transmission cooperation between the second driving mechanism 10 and the rack bar 107 to drive the positioning structure 7 to move in the direction away from the electromagnetic pulse forming structure 2. While the positioning structure 7 moves, it drives the spiral tube 12 to be processed to move until the spiral tube 12 to be processed is completed. After the entire spiral tube 12 to be processed is completed, the spiral tube 12 to be processed can be unloaded, avoiding the problem in the prior art that it is difficult to separate the spiral tube 12 to be processed from the mold, that is, the concave part of the spiral tube 12 to be processed is engaged with the concave part of the mandrel 6. During the entire processing process, the moving distance of the positioning structure 7 can be observed by the pointer 705 pointing to the scale of the scale 110. During the moving process, the moving distance of the positioning structure 7 can be preset by an external controller, and then the distance is measured by the distance sensor 11. When the positioning structure 7 moves to the preset distance, the distance sensor 11 transmits a signal to the external sensor, and then the second driving mechanism 10 is controlled to stop moving through the external sensor.

[0016] The base 101 is of a frame structure.

[0017] A method for processing an intermittent spiral tube using the intermittent spiral tube processing device described in claim 1 includes the following steps:

[0018] Step 1: Adjust the position of the electromagnetic pulse forming structure 2 according to the required processing shape of the spiral tube 12 to be processed. When adjusting, fix the position of the electromagnetic pulse forming structure 2 by inserting the first limiting plate 3 into the corresponding limiting groove 106.

[0019] Step 2: Sleeve the spiral tube 12 to be processed outside the mandrel 6 and pass it through the electromagnetic pulse forming structure 2.

[0020] Step 3: Fix one end of the mandrel 6 at the top of the second clamping block 104 through the first clamping block 5 using bolts.

[0021] Step 4: Use the transmission cooperation between the second driving mechanism 10 and the rack bar 107 to move the positioning structure 7 close to one end of the spiral tube 12 to be processed;

[0022] Step 5: Use the clamping structure 9 to apply force circumferentially on the outer surface of the spiral tube 12 to be processed to clamp the spiral tube 12 to be processed;

[0023] Step 6: Operate the electromagnetic pulse forming structure 2 to process the spiral tube 12 to be processed;

[0024] Step 7: While the electromagnetic pulse forming structure 2 processes the spiral tube 12 to be processed, use the first driving mechanism 8 to drive the clamping structure 9 to rotate, thereby driving the spiral tube 12 to be processed to rotate circumferentially. Use the second driving mechanism 10 to drive the positioning structure 7 to move away from the electromagnetic pulse forming structure 2, thereby driving the spiral tube 12 to be processed to generate a relative displacement with the mandrel 6 until the processing is completed.

[0025] Advantages of the present invention:

[0026] 1. By using the electromagnetic pulse forming structure, the first limiting plate, the limiting groove and the adjustable positioning set screw handle, the present invention can process spiral tubes with different shapes and arbitrary-length threaded segments, broadening the processing range of different threaded segment types of spiral tubes. Moreover, during the processing, the processing method can be arbitrarily changed, and the entire process can be completed without replacing the mandrel, improving the convenience of spiral tube processing.

[0027] 2. By using the positioning structure, the first driving mechanism, the second driving mechanism, the clamping structure and the rack bar, the present invention can cause the spiral tube to generate a relative displacement with the mandrel during the processing of the spiral tube, improving the convenience of separating the spiral tube from the mandrel and preventing the spiral tube and the mandrel from being pinched, resulting in damage and scrapping of the pipe fittings. Brief Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of the present invention;

[0029] Figure 2 It is a front view of the present invention;

[0030] Figure 3 It is Figure 1 a schematic structural diagram of the base structure 1 in

[0031] Figure 4 It is Figure 1 a schematic structural diagram of the electromagnetic pulse forming structure 2 in

[0032] Figure 5 It is Figure 4 a top view structural diagram of

[0033] Figure 6 is Figure 5 Schematic cross-sectional structure diagram at A-A in

[0034] Figure 7 is Figure 1 Schematic structure diagram of the positioning structure in

[0035] Figure 8 is Figure 1 Schematic structure diagram of the clamping structure in

[0036] In the figure: 1 is the base structure, 2 is the electromagnetic pulse forming structure, 3 is the first limiting plate 3, 4 is the adjustable set screw handle, 5 is the first clamping block, 6 is the mandrel, 7 is the positioning structure, 8 is the first driving mechanism, 9 is the clamping structure, 10 is the second driving mechanism, 11 is the distance sensor, 12 is the spiral tube to be processed, 101 is the base, 102 is the bottom plate, 103 is the fixed seat, 104 is the second clamping block, 105 is the slide rail, 106 is the limiting groove, 107 is the rack bar, 108 is the mounting bracket, 109 is the second limiting plate, 110 is the scale, 201 is the first seat plate, 202 is the coil mounting plate, 203 is the insulating positioning ring, 204 is the positioning tower ring, 205 is the processing coil, 206 is the first sliding pair, 701 is the second seat plate, 702 is the positioning plate, 703 is the through hole, 704 is the second sliding pair, 705 is the pointer, 901 is the rotating column, 902 is the fixed disc, 903 is the ear plate, 904 is the threaded column, 905 is the V-shaped clamping block. Specific implementation manner

[0037] An intermittent spiral tube processing device, comprising a base structure 1 and an electromagnetic pulse forming structure. The base structure 1 includes a base, a bottom plate is fixed on the top of the base, a fixed seat is fixed on the upper surface of the bottom plate, a second clamping block is fixed on one side surface of the fixed seat. The electromagnetic pulse forming structure includes a first seat plate, two relatively arranged coil mounting plates are fixed on the upper surface of the first seat plate, an insulating positioning ring is installed on one side surface of the coil mounting plate, a positioning tower ring is fixed at the axis center of the insulating positioning ring, a processing coil is installed at the middle position between two opposite insulating positioning rings. The upper surface of the bottom plate is equidistantly provided with limiting grooves, and a rack bar is fixed on the upper surface of the bottom plate; the electromagnetic pulse forming structure is slidably connected to the top of the bottom plate, and first limiting plates matched with the limiting grooves are inserted on both side surfaces of the electromagnetic pulse forming structure at the top of the bottom plate; wherein, the first limiting plate is used for limiting the position of the electromagnetic pulse forming structure, and an adjustable locking handle threadedly connected with the first limiting plate and matched with the electromagnetic pulse forming structure penetrates through one side surface of one of the first limiting plates; the positioning structure is slidably connected to the top of the bottom plate, the positioning structure includes a second seat plate, and a positioning plate is fixed on the upper surface of the second seat plate; a second driving mechanism is installed on the top of the second seat plate, the output shaft end of the second driving mechanism penetrates through the second seat plate and is fixed with a gear in transmission cooperation with the rack bar; a first driving mechanism is installed on one side surface of the positioning plate, the output shaft end of the first driving mechanism penetrates through the positioning plate and is fixed with a clamping structure; a mandrel is fixed on the top of the second clamping block through a first clamping block, a spiral tube penetrating through the positioning tower ring is sleeved on the outer surface of one section of the mandrel far away from the first clamping block, and one end of the spiral tube close to the positioning plate is clamped by the clamping structure.

[0038] For the convenience of the clamping structure to clamp the spiral tube, preferably, the clamping structure applies force circumferentially from the outer surface of the spiral tube to clamp the spiral tube.

[0039] To improve the firmness of the clamping structure for clamping the spiral tube, further, the clamping structure includes a rotating column fixedly connected to the output shaft end of the first driving mechanism, a fixed disc is fixed at one end of the rotating column far away from the first driving mechanism, two ear plates are fixed at one end of the fixed disc far away from the rotating column, a threaded column threadedly connected with the ear plate penetrates through one surface of the ear plate, and one end of the threaded column close to the axis center of the fixed disc is rotatably connected with a V-shaped clamping block.

[0040] For the convenience of the first seat plate and the second seat plate to slide on the bottom plate, preferably, two slide rails are fixed on the upper surface of the bottom plate, a first sliding pair matched with the slide rail is fixed on the lower surface of the first seat plate, and a second sliding pair matched with the slide rail is fixed on the lower surface of the second seat plate.

[0041] For the convenience of visually observing the processing length of the spiral tube by human eyes, preferably, a scale is fixed on the upper surface of the bottom plate, a pointer matching the scale is fixed on one side surface of the second seat plate, and a through hole matching the second driving mechanism is formed on the upper surface of the second seat plate.

[0042] For accurately controlling the processing length of the spiral tube, preferably, two mounting brackets are fixed on the top of the bottom plate, a distance sensor is mounted on the lower surface of the mounting bracket, and the distance sensor is electrically connected to an external controller.

[0043] To prevent the positioning structure from falling off the top of the bottom plate, preferably, a second limiting plate is fixed at a position on the upper surface of the bottom plate and on one side of the slide rail.

[0044] For the accuracy of spiral tube processing, preferably, the axes of the spiral tube, the positioning tower ring, and the mandrel coincide.

[0045] An intermittent spiral tube processing method includes the following steps:

[0046] Step 1: Adjust the position of the electromagnetic pulse forming structure according to the required processing shape of the spiral tube. When adjusting, insert the first limiting plate into the corresponding limiting groove to fix the position of the electromagnetic pulse forming structure;

[0047] Step 2: Sleeve the spiral tube outside the mandrel and penetrate the electromagnetic pulse forming structure;

[0048] Step 3: Fix one end of the mandrel on the top of the second clamping block by using a bolt through the first clamping block;

[0049] Step 4: Use the transmission cooperation between the second driving mechanism and the rack bar to move the positioning structure close to one end of the spiral tube;

[0050] Step 5: Use the clamping structure to apply force circumferentially from the outer surface of the spiral tube to clamp the spiral tube;

[0051] Step 6: Operate the electromagnetic pulse forming structure to process the spiral tube;

[0052] Step 7: While the electromagnetic pulse forming structure processes the spiral tube, use the first driving mechanism to drive the clamping structure to rotate and then drive the spiral tube to rotate circumferentially, and use the second driving mechanism to drive the positioning structure to move away from the electromagnetic pulse forming structure to drive the spiral tube and the mandrel to generate relative displacement until the processing is completed.

[0053] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0054] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0055] Embodiment:

[0056] Referring to Figure 1-8 , an intermittent spiral tube processing device includes a base structure 1 and an electromagnetic pulse forming structure 2. The base structure 1 includes a base 101. A bottom plate 102 is fixed on the top of the base 101. A fixing seat 103 is fixed on the upper surface of the bottom plate 102. A second clamping block 104 is fixed on one side surface of the fixing seat 103. The electromagnetic pulse forming structure 2 includes a first seat plate 201. Two relatively arranged coil mounting plates 202 are fixed on the upper surface of the first seat plate 201. An insulating positioning ring 203 is installed on one side surface of the coil mounting plate 202. A positioning tower ring 204 is fixed at the axis center of the insulating positioning ring 203. A processing coil 205 is installed at the middle position between two opposite insulating positioning rings 203.

[0057] Limit slots 106 are equidistantly opened on the upper surface of the bottom plate 102, and a rack bar 107 is fixed on the upper surface of the bottom plate 102; the electromagnetic pulse forming structure 2 is slidably connected to the top of the bottom plate 102. First limit plates 3 that are matched with the limit slots 106 are inserted on both side surfaces of the electromagnetic pulse forming structure 2 at the top of the bottom plate 102; the first limit plates 3 are used to limit the position of the electromagnetic pulse forming structure 2. A position-adjustable set screw handle 4 that is threadedly connected to the first limit plate 3 and is matched with the electromagnetic pulse forming structure 2 penetrates through one side surface of one of the first limit plates 3; in short, by changing the positions of the two first limit plates 3 on different limit slots 106, the position of the electromagnetic pulse forming structure 2 is changed, so that the processing coil 205 is located at different positions corresponding to different thread segments on the mandrel 6, and intermittent or continuous processing of different thread segments of the spiral tube 12 to be processed can be performed.

[0058] A positioning structure 7 is slidably connected to the top of the bottom plate 102. The positioning structure 7 includes a second seat plate 701. A positioning plate 702 is fixed on the upper surface of the second seat plate 701; a second driving mechanism 10 is installed on the top of the second seat plate 701. The output shaft end of the second driving mechanism 10 penetrates through the second seat plate 701 and is fixed with a gear that is in transmission cooperation with the rack bar 107; a first driving mechanism 8 is installed on one side surface of the positioning plate 702. The output shaft end of the first driving mechanism 8 penetrates through the positioning plate 702 and is fixed with a clamping structure 9.

[0059] The clamping structure 9 applies a circumferential force to the outer surface of the spiral tube 12 to be machined for clamping; the clamping structure 9 includes a rotating column 901 fixedly connected to the output shaft end of the first driving mechanism 8. A fixed disk 902 is fixed to one end of the rotating column 901 away from the first driving mechanism 8. Two ear plates 903 are fixed to one end of the fixed disk 902 away from the rotating column 901. A threaded column 904 threaded with the ear plate 903 penetrates through one surface of the ear plate 903. One end of the threaded column 904 near the axis of the fixed disk 902 is rotatably connected to a V-shaped clamping block 905.

[0060] A mandrel 6 is fixed to the top of the second clamping block 104 through a first clamping block 5. A spiral tube 12 to be machined is sleeved on the outer surface of one end of the mandrel 6 away from the first clamping block 5 and penetrates through a positioning tower ring 204. The spiral tube 12 to be machined is clamped by a clamping structure 9 near one end of the positioning plate 702; in short, the mandrel 6 is a die shaft provided with a threaded section, and the pipe fitting is machined with the mandrel 6 as a reference.

[0061] Two slide rails 105 are fixed to the upper surface of the bottom plate 102. A first sliding pair 206 matched with the slide rail 105 is fixed to the lower surface of the first seat plate 201. A second sliding pair 704 matched with the slide rail 105 is fixed to the lower surface of the second seat plate 701; a scale 110 is fixed to the upper surface of the bottom plate 102. A pointer 705 matched with the scale 110 is fixed to one side surface of the second seat plate 701. A through hole 703 matched with the second driving mechanism 10 is opened on the upper surface of the second seat plate 701; a second limiting plate 109 is fixed to the upper surface of the bottom plate 102 and at a position on one side of the slide rail 105; the axes of the spiral tube 12 to be machined, the positioning tower ring 204, and the mandrel 6 coincide.

[0062] Two mounting brackets 108 are fixed to the top of the bottom plate 102. A distance sensor 11 is installed on the lower surface of the mounting bracket 108. The distance sensor 11 is electrically connected to an external controller, and the distance sensor 11 is used to measure the moving distance of the positioning structure 7.

[0063] In the present invention, during use, one end of the mandrel 6 is fixed to the top of the second clamping block 104 through the first clamping block 5, and then the blank of the spiral tube 12 to be processed is passed through to the outside of the mandrel 6. Secondly, the combination of the blank of the spiral tube 12 to be processed and the mandrel 6 is passed through the electromagnetic pulse forming structure 2. Secondly, according to the shape and length processing requirements of the threaded section on the mandrel 6, the position of the electromagnetic pulse forming structure 2 is adjusted. During adjustment, the electromagnetic pulse forming structure 2 is moved so that the processing coil 205 surrounds the outside of the threaded section that meets the requirements. Secondly, the two first limiting plates 3 are respectively inserted into the limiting grooves 106 on both sides of the electromagnetic pulse forming structure 2, and then the adjustable positioning set handle 4 is passed through one of the first limiting plates 3 to limit and fix the position of the electromagnetic pulse forming structure 2. After the fixation is completed, the end of the blank of the spiral tube 12 to be processed away from the first clamping block 5 is limited and fixed through the clamping structure 9. Secondly, the electromagnetic pulse forming structure 2 is started, and the first driving mechanism 8 drives the clamping structure 9 to rotate, thereby driving the blank of the spiral tube 12 to be processed to rotate. The second driving mechanism 10 and the transmission cooperation of the rack bar 107 drive the positioning structure 7 to move in a direction away from the electromagnetic pulse forming structure 2. While the positioning structure 7 moves, it drives the spiral tube 12 to be processed to move until the spiral tube 12 to be processed is completed. After the entire spiral tube 12 to be processed is completed, the spiral tube 12 to be processed can be unloaded, avoiding the problem in the prior art that it is difficult to separate the spiral tube 12 to be processed from the die tube, that is, the concave part of the spiral tube 12 to be processed is engaged with the concave part of the mandrel 6. During the entire processing process, the moving distance of the positioning structure 7 can be observed by the pointer 705 pointing to the scale of the scale 110. During the movement, the moving distance of the positioning structure 7 can be preset through an external controller, and then the distance sensor 11 measures the distance. When the positioning structure 7 moves to the preset distance, the distance sensor 11 transmits a signal to the external sensor, and then the second driving mechanism 10 is controlled to stop moving through the external sensor.

[0064] A method for processing an intermittent spiral tube includes the following steps:

[0065] Step 1: Adjust the position of the electromagnetic pulse forming structure 2 according to the required processing shape of the spiral tube 12 to be processed. During adjustment, the first limiting plate 3 is inserted into the corresponding limiting groove 106 to fix the position of the electromagnetic pulse forming structure 2;

[0066] Step 2: Sleeve the spiral tube 12 to be processed outside the mandrel 6 and pass it through the electromagnetic pulse forming structure 2;

[0067] Step 3: Fix one end of the mandrel 6 to the top of the second clamping block 104 through the first clamping block 5 using bolts;

[0068] Step 4: Move the positioning structure 7 close to one end of the spiral tube 12 to be processed by the transmission cooperation between the second driving mechanism 10 and the rack bar 107;

[0069] Step 5: Clamp the spiral tube 12 to be processed by applying force circumferentially from the outer surface of the spiral tube 12 to be processed by the clamping structure 9;

[0070] Step 6: Operate the electromagnetic pulse forming structure 2 to process the spiral tube 12 to be processed;

[0071] Step 7: While the electromagnetic pulse forming structure 2 processes the spiral tube 12 to be processed, drive the clamping structure 9 to rotate by the first driving mechanism 8, thereby driving the spiral tube 12 to be processed to rotate circumferentially. Drive the positioning structure 7 to move away from the electromagnetic pulse forming structure 2 by the second driving mechanism 10, thereby driving the spiral tube 12 to be processed to generate a relative displacement with the mandrel 6 until the processing is completed.

[0072] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An intermittent spiral tube processing device, comprising a base structure (1), characterized in that, It further includes an electromagnetic pulse forming structure (2); wherein, the base structure (1) includes a base (101), a bottom plate (102) is fixed on the top of the base (101), a fixed seat (103) is fixed at the rightmost end of the upper surface of the bottom plate (102), a second clamping block (104) is fixed on the left side surface of the fixed seat (103), the electromagnetic pulse forming structure (2) includes a first seat plate (201), two oppositely arranged coil mounting plates (202) are fixed on the upper surface of the first seat plate (201), an insulating positioning ring (2,03) is mounted on one side surface of the coil mounting plate (202), a positioning tower ring (204) is fixed at the axis center of the insulating positioning ring (203), and a processing coil (205) is mounted at the middle position between two opposite insulating positioning rings (203); Limiting grooves (106) are equidistantly formed on the upper surface of the bottom plate (102), and a rack bar (107) is fixed on the upper surface of the bottom plate (102); the electromagnetic pulse forming structure (2) is slidably connected to the top of the bottom plate (102), and first limiting plates (3) matching with the limiting grooves (106) are inserted on both side surfaces of the electromagnetic pulse forming structure (2) at the top of the bottom plate (102); the first limiting plates (3) are used to limit the position of the electromagnetic pulse forming structure (2), wherein a threaded hole is formed on one side surface of the first limiting plate (3), which is connected to an adjustable locking handle (4), and the position of the electromagnetic pulse forming structure (2) is locked and changed through the adjustable locking handle (4); in short, by changing the positions of the two first limiting plates (3) on different limiting grooves (106), the position of the electromagnetic pulse forming structure (2) is changed, so that the processing coil (205) is located at different positions corresponding to different threaded segments on the mandrel (6), and the interrupted or continuous processing of different threaded segments of the spiral tube (12) to be processed can be carried out; A positioning structure (7) is slidably connected to the top of the bottom plate (102), the positioning structure (7) includes a second seat plate (701), and a positioning plate (702) is fixed on the upper surface of the second seat plate (701); a second driving mechanism (10) is mounted on the top of the second seat plate (701), the output shaft end of the second driving mechanism (10) penetrates through the second seat plate (701) and is fixed with a gear in transmission cooperation with the rack bar (107); a first driving mechanism (8) is mounted on one side surface of the positioning plate (702), and the output shaft end of the first driving mechanism (8) penetrates through the positioning plate (702) and is fixed with a clamping structure (9); The clamping structure (9) applies a circumferential force to the outer surface of the spiral tube (12) to be processed to clamp the spiral tube (12) to be processed; the clamping structure (9) includes a rotating column (901) fixedly connected to the output shaft end of the first driving mechanism (8), a fixed disc (902) is fixed at the end of the rotating column (901) far from the first driving mechanism (8), two ear plates (903) are fixed at the end of the fixed disc (902) far from the rotating column (901), a threaded column (904) threadedly connected to the ear plate (903) penetrates through one surface of the ear plate (903), and a V-shaped clamping block (905) is rotatably connected to one end of the threaded column (904) close to the axis center of the fixed disc (902); A mandrel (6) is fixed to the top of the second clamping block (104) by a first clamping block (5). A section of the outer surface of the mandrel (6) away from the first clamping block (5) is sleeved with a spiral tube (12) to be processed, which penetrates through a positioning tower ring (204). One end of the spiral tube (12) to be processed close to a positioning plate (702) is clamped by a clamping structure (9). In short, the mandrel (6) is a die shaft provided with a threaded section, and the pipe fitting is processed with the mandrel (6) as a reference. Two slide rails (105) are fixed to the upper surface of a bottom plate (102). A first sliding pair (206) matched with the slide rails (105) is fixed to the lower surface of a first seat plate (201). A second sliding pair (704) matched with the slide rails (105) is fixed to the lower surface of a second seat plate (701). A scale (110) is fixed to the upper surface of the bottom plate (102). A pointer (705) matched with the scale (110) is fixed to one side surface of the second seat plate (701). A through hole (703) matched with a second driving mechanism (10) is formed in the upper surface of the second seat plate (701). A second limiting plate (109) is fixed to the upper surface of the bottom plate (102) and at a position on one side of the slide rails (105). The axes of the spiral tube (12) to be processed, the positioning tower ring (204), and the mandrel (6) coincide. Two mounting brackets (108) are fixed to the top of the bottom plate (102). A distance sensor (11) is mounted on the lower surface of the mounting bracket (108). The distance sensor (11) is electrically connected to an external controller. The distance sensor (11) is used to measure the moving distance of a positioning structure (7).

2. The intermittent spiral tube processing device according to claim 1, characterized in that, The base (101) is of a frame structure.

3. A method for processing an intermittent spiral tube by using the intermittent spiral tube processing device according to claim 1, comprising the following steps: Step 1: Adjust the position of the electromagnetic pulse forming structure (2) according to the required processing shape of the spiral tube (12) to be processed. When adjusting, insert a first limiting plate (3) into a corresponding limiting groove (106) to fix the position of the electromagnetic pulse forming structure (2). Step 2: Sleeve the spiral tube (12) to be processed outside the mandrel (6) and penetrate through the electromagnetic pulse forming structure (2). Step 3: Fix one end of the mandrel (6) to the top of the second clamping block (104) by using bolts through the first clamping block (5). Step 4: Use the transmission cooperation between the second driving mechanism (10) and a rack bar (107) to move the positioning structure (7) close to one end position of the spiral tube (12) to be processed. Step 5: Use the clamping structure (9) to apply a circumferential force to the outer surface of the spiral tube (12) to be processed to clamp the spiral tube (12) to be processed. Step 6: Operate the electromagnetic pulse forming structure (2) to process the spiral tube (12) to be processed. Step 7: While the electromagnetic pulse forming structure (2) processes the spiral tube (12) to be processed, the first driving mechanism (8) drives the clamping structure (9) to rotate, thereby driving the spiral tube (12) to be processed to rotate circumferentially. The second driving mechanism (10) drives the positioning structure (7) to move away from the electromagnetic pulse forming structure (2), thereby driving the spiral tube (12) to be processed to generate a relative displacement with the mandrel (6) until the processing is completed.

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