Pulse current auxiliary drawing device
By designing a pulse current assisted pulling device, the support cylinder and adjustment bracket are used to ensure the stability of the pipe and mold, the problem of poor stability of metal composite pipes in drawing processing is solved, and the product yield and quality are improved.
Patent Information
- Application Number
- CN202421569999.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-04
AI Technical Summary
During the drawing and processing of metal composite pipes, the longer pipes have poor stability and are prone to offset from the horn mold, resulting in quality problems such as cracks and shedding of the composite layer.
A pulse current assisted pulling device is designed. By setting up a support cylinder and an adjustment bracket, the pipe remains coaxially with the fixed long core die, and the height of the pipe is adjusted to be consistent with the height of the pulling outer die by adjusting the support, thereby improving the stability between the pipe and the mold.
Through this device, the radial stress of the pipe remains balanced, which improves product yield and reduces the quality problems of the composite layer.
Smart Images
Figure CN222842831U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drawing and forming, in particular to a pulse current auxiliary drawing device. Background Art
[0002] With the gradual improvement of electroplasticity theory, in metal plastic processing, the introduction of pulse current into the metal plastic deformation zone can often reduce the metal's deformation resistance, increase the product's plastic limit, improve the metal surface quality and structure, and is particularly suitable for difficult-to-form or low-plasticity materials. Although the electroplastic effect has been used in wire drawing, rolling, cutting and other fields, it will take a long time for it to be fully and widely used in the engineering field.
[0003] Currently, common processing technologies for preparing metal composite pipes include centrifugal casting, metal explosion forming, bimetallic sleeve hot rolling, etc. When using a pulse current assisted drawing device to draw metal composite pipes, stable support for the pipes is very necessary. Longer pipes have poor stability during processing. During the production process, the pipe and the horn mold will be offset, which will cause cracks, falling off and other quality problems in the composite layer of the metal composite pipe.
[0004] To this end, we propose a pulse current assisted pulling device. Utility Model Content
[0005] The purpose of the utility model is to provide a pulse current auxiliary pulling device to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pulse current assisted pulling device, comprising a base, a support frame is fixedly installed in the middle of the top of the base, a power box located on the rear side of the support frame is fixedly installed on one side of the base, a mold support seat located on one side of the support frame is fixedly installed on the top of the base, an adjustment bracket located on the other side of the support frame is arranged on the top of the base, an induction coil is fixedly installed on the top of the support frame, a drawing outer mold is fixedly installed on the top of the mold support seat, a fixed long core mold is arranged inside the drawing outer mold, a supporting cylinder located inside the induction coil is fixedly installed in the middle of the fixed long core mold, a telescopic sleeve is fixedly installed inside the support cylinder, a telescopic rod is slidably connected to the inside of the telescopic sleeve, an ejection spring is arranged inside the telescopic sleeve, and a roller is rotatably connected to the end of the telescopic rod.
[0007] Optionally, the fixed long core die includes a tapered table corresponding to the drawing outer die and a stepped shaft fixedly installed in the middle of the tapered table, and the supporting cylinder is fixedly installed in the middle of the stepped shaft.
[0008] Optionally, one end of the telescopic sleeve is flush with the outer circumference of the supporting cylinder, the telescopic rod and the telescopic sleeve are slidably connected through one end flush with the outer circumference of the supporting cylinder, and the diameter and width of the roller are not greater than the width inside the telescopic sleeve.
[0009] Optionally, one end of the ejection spring is fixedly mounted to the bottom of the telescopic sleeve, and the other end of the ejection spring is fixedly mounted to the telescopic rod.
[0010] Optionally, the adjustment bracket includes a fixed block fixedly mounted on the top of the base, the top of the fixed block is rotatably connected to a threaded sleeve, the internal thread of the threaded sleeve is connected to a lifting sleeve, the top of the lifting sleeve is fixedly mounted with a supporting arc plate, the middle part of the top of the fixed block is integrally connected with a sleeve rod, the outer peripheral surface of the sleeve rod is provided with a limiting sliding groove, and the top of the sleeve rod is flush with the top of the threaded sleeve.
[0011] Optionally, the lifting sleeve is slidably sleeved on the outside of the sleeve rod, and the interior of the lifting sleeve is integrally connected with a limiting slide bar, and the limiting slide bar is slidably connected to the limiting slide groove.
[0012] Optionally, the length of the lifting sleeve is the same as that of the threaded sleeve, and the threaded sleeve is coaxially arranged with the sleeve connecting rod.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] The pulse current assisted drawing device sets a supporting cylinder to sleeve the pipe on the outside of the fixed long core mold, and the ejection spring pushes the telescopic rod out of the telescopic sleeve, so that the roller is pressed against the inner wall of the pipe, so that the pipe and the fixed long core mold remain coaxial, so that when the pipe is drawn through the drawing outer mold, the radial force of the pipe remains balanced, thereby improving the product yield.
[0015] The pulse current assisted drawing device is provided with an adjustment bracket and rotates the threaded sleeve to make the lifting sleeve move up and down along the limiting slide groove. The height of the supporting arc plate is adjusted by the up and down movement of the lifting sleeve, so that the height of the pipe is adapted to the height of the drawing outer die, which greatly improves the stability between the pipe and the drawing outer die and reduces the quality problems such as cracks and falling off of the composite layer of the metal composite pipe caused by the imbalance between the pipe and the drawing outer die. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the overall structure of a pulse current assisted pulling device of the utility model;
[0017] Figure 2 It is a structural schematic diagram of a stepped shaft of a pulse current assisted drawing device of the utility model;
[0018] Figure 3This is a schematic structural diagram of a support cylinder of a pulse current assisted pulling device of the utility model;
[0019] Figure 4 The utility model is a schematic structural diagram of an adjusting bracket of a pulse current assisted pulling device.
[0020] In the figure: 1. base; 2. power box; 3. support frame; 4. induction coil; 5. mold support seat; 6. adjustment bracket; 61. fixed block; 62. sleeve rod; 63. limit slide groove; 64. lifting sleeve; 65. limit slide bar; 66. threaded sleeve; 67. support arc plate; 7. drawing die; 8. stepped shaft; 9. support cylinder; 10. telescopic sleeve; 11. telescopic rod; 12. ejector spring; 13. roller. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figures 1 to 4 The utility model provides a pulse current assisted drawing device, including a base 1, a support frame 3 is fixedly installed in the middle of the top of the base 1, a power box 2 located on the rear side of the support frame 3 is fixedly installed on one side of the base 1, a mold support seat 5 located on one side of the support frame 3 is fixedly installed on the top of the base 1, an adjustment bracket 6 located on the other side of the support frame 3 is arranged on the top of the base 1, an induction coil 4 is fixedly installed on the top of the support frame 3, a drawing outer mold 7 is fixedly installed on the top of the mold support seat 5, a fixed long core mold 8 is arranged inside the drawing outer mold 7, and a fixed long core mold 8 is fixedly installed in the middle of the fixed long core mold 8. 4, a telescopic sleeve 10 is fixedly installed inside the support cylinder 9, a telescopic rod 11 is slidably connected to the inside of the telescopic sleeve 10, an ejection spring 12 is arranged inside the telescopic sleeve 10, and a roller 13 is rotatably connected to the end of the telescopic rod 11. By arranging the support cylinder 9, the pipe is sleeved on the outside of the fixed long core mold 8, and the ejection spring 12 pushes the telescopic rod 11 out of the telescopic sleeve 10, so that the roller 13 is pressed against the inner wall of the pipe, so that the pipe and the fixed long core mold 8 keep the same axis, so that when the pipe is drawn through the drawing outer mold 7, the radial force of the pipe is kept balanced, thereby improving the product yield.
[0023] The fixed long core mold 8 includes a tapered table corresponding to the drawing outer mold 7 and a stepped shaft fixedly installed in the middle of the tapered table. The supporting cylinder 9 is fixedly installed in the middle of the stepped shaft. One end of the telescopic sleeve 10 is flush with the outer circumferential surface of the supporting cylinder 9. The telescopic rod 11 is slidably connected with the telescopic sleeve 10 and one end thereof is flush with the outer circumferential surface of the supporting cylinder 9. The diameter and width of the roller 13 are not greater than the width inside the telescopic sleeve 10. One end of the ejection spring 12 is fixedly installed with the bottom inside the telescopic sleeve 10, and the other end of the ejection spring 12 is fixedly installed with the telescopic rod 11.
[0024] The adjusting bracket 6 includes a fixed block 61 fixedly installed on the top of the base 1, the top of the fixed block 61 is rotatably connected with a threaded sleeve 66, the internal thread of the threaded sleeve 66 is connected with a lifting sleeve 64, the top of the lifting sleeve 64 is fixedly installed with a supporting arc plate 67, the middle part of the top of the fixed block 61 is integrally connected with a sleeve connecting rod 62, the outer peripheral surface of the sleeve connecting rod 62 is provided with a limiting sliding groove 63, the top of the sleeve connecting rod 62 is flush with the top of the threaded sleeve 66, the lifting sleeve 64 is slidably sleeved on the outside of the sleeve connecting rod 62, the inside of the lifting sleeve 64 is integrally connected with a limiting sliding strip 65, and the limiting sliding strip 65 and the limiting sliding strip are connected. The groove 63 is slidably connected, the length of the lifting sleeve 64 is the same as the length of the threaded sleeve 66, the threaded sleeve 66 is coaxially arranged with the sleeve connecting rod 62, and the adjusting bracket 6 is arranged and the threaded sleeve 66 is rotated to make the lifting sleeve 64 move up and down along the limiting sliding groove 63. The height of the supporting arc plate 67 is adjusted by the up and down movement of the lifting sleeve 64, so that the height of the pipe is adapted to the height of the drawing outer die 7, which greatly improves the stability between the pipe and the drawing outer die 7 and reduces the quality problems such as cracks and falling off of the composite layer of the metal composite pipe caused by the imbalance between the pipe and the drawing outer die 7.
[0025] Working principle:
[0026] The pipe is put on the outside of the fixed long core mold 8, and the ejector spring 12 pushes the telescopic rod 11 out of the telescopic sleeve 10, so that the roller 13 is pressed against the inner wall of the pipe, so that the pipe and the fixed long core mold 8 remain coaxial, and the bottom of the pipe is placed on the supporting arc plate 67. By rotating the threaded sleeve 66, the lifting sleeve 64 moves up and down along the limiting slide groove 63. The height of the supporting arc plate 67 is adjusted by the up and down movement of the lifting sleeve 64, so that the height of the pipe is adapted to the height of the drawing outer mold 7, which greatly improves the stability between the pipe and the drawing outer mold 7 and reduces the quality problems such as cracks and falling off of the composite layer of the metal composite pipe caused by the imbalance between the pipe and the drawing outer mold 7.
[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A pulse current assisted pulling device, comprising a base (1), characterized in that: A support frame (3) is fixedly mounted in the middle of the top of the base (1); a power supply box (2) located at the rear side of the support frame (3) is fixedly mounted on one side of the base (1); a mold support seat (5) located on one side of the support frame (3) is fixedly mounted on the top of the base (1); an adjustment bracket (6) located on the other side of the support frame (3) is arranged on the top of the base (1); an induction coil (4) is fixedly mounted on the top of the support frame (3); a drawing outer die (7) is fixedly mounted on the top of the mold support seat (5); a fixed long core die (8) is arranged inside the drawing outer die (7); a support cylinder (9) located inside the induction coil (4) is fixedly mounted in the middle of the fixed long core die (8); a telescopic sleeve (10) is fixedly mounted inside the support cylinder (9); a telescopic rod (11) is slidably connected to the inside of the telescopic sleeve (10); an ejection spring (12) is arranged inside the telescopic sleeve (10); and a roller (13) is rotatably connected to the end of the telescopic rod (11).
2. A pulse current assisted pulling device according to claim 1, characterized in that: The fixed long core die (8) comprises a tapered platform corresponding to the drawing outer die (7) and a stepped shaft fixedly mounted in the middle of the tapered platform, and the supporting cylinder (9) is fixedly mounted in the middle of the stepped shaft.
3. A pulse current assisted pulling device according to claim 2, characterized in that: One end of the telescopic sleeve (10) is arranged flush with the outer circumference of the supporting cylinder (9), the telescopic rod (11) penetrates and is slidably connected with the end of the telescopic sleeve (10) flush with the outer circumference of the supporting cylinder (9), and the diameter and width of the roller (13) are not greater than the width of the interior of the telescopic sleeve (10).
4. A pulse current assisted pulling device according to claim 1, characterized in that: One end of the ejection spring (12) is fixedly mounted on the bottom of the telescopic sleeve (10), and the other end of the ejection spring (12) is fixedly mounted on the telescopic rod (11).
5. A pulse current assisted pulling device according to claim 1, characterized in that: The adjustment bracket (6) comprises a fixed block (61) fixedly mounted on the top of the base (1); the top of the fixed block (61) is rotatably connected to a threaded sleeve (66); the internal thread of the threaded sleeve (66) is connected to a lifting sleeve (64); the top of the lifting sleeve (64) is fixedly mounted with a supporting arc plate (67); the middle part of the top of the fixed block (61) is integrally connected to a sleeve connecting rod (62); the outer peripheral surface of the sleeve connecting rod (62) is provided with a limiting sliding groove (63); the top of the sleeve connecting rod (62) is flush with the top of the threaded sleeve (66).
6. A pulse current assisted pulling device according to claim 5, characterized in that: The lifting sleeve (64) is slidably sleeved on the outside of the sleeve connecting rod (62), the interior of the lifting sleeve (64) is integrally connected with a limit slide bar (65), and the limit slide bar (65) is slidably connected to the limit slide groove (63).
7. A pulse current assisted pulling device according to claim 5, characterized in that: The length of the lifting sleeve (64) is the same as that of the threaded sleeve (66), and the threaded sleeve (66) and the sleeve connecting rod (62) are coaxially arranged.