Low-expansion iron-nickel alloy sheet stretching forming device
By designing a thin iron-nickel alloy thin plate stretching forming device combining cylinders, pressing plates, stretching grooves, rolling assembly and guide grooves, the problem of uneven stress on the thin plate during stretching in the prior art is solved, and the effect of uniform thickness after stretching is achieved, and the defective rate is reduced.
Patent Information
- Application Number
- CN202421617724.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The existing iron-nickel alloy thin plate stretching molding device causes uneven overall stress during stretching, resulting in uneven thickness after stretching, and prone to fracture at both ends of the thin plate.
A low-expanded iron-nickel alloy thin plate stretching forming device is designed, adopting a combined structure of cylinders, pressure plates, stretching grooves, roller pressing components and guide grooves. The pressure plates are pushed down by cylinders, and the roller pressing components are used to roll-stretch the thin plates in the guide grooves to ensure uniform tensile force.
It effectively reduces the thickness uneven problem caused by uneven stress at both ends of the thin plate during stretching, reduces the defective rate and improves the stretching effect.
Smart Images
Figure CN222919434U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of iron-nickel alloys, in particular to a stretching and forming device for low-expansion iron-nickel alloy thin plates. Background Art
[0002] Iron-nickel alloy is a low-frequency soft magnetic material with high magnetic permeability and low coercive force in a weak magnetic field. In the early days, iron-nickel alloy was used for telephone communication. Subsequently, an alloy with improved properties was obtained by means of a heat treatment process and vacuum smelting. The magnetic permeability of the iron-nickel alloy containing 78% Ni in a weak magnetic field is about 10-20 times higher than that of silicon steel. It is widely used in sensitive relays, magnetic shields, telephone and radio transformers, precision AC and DC meters, and current transformers (see current transformers).
[0003] When the existing devices are stretching, most of them adopt the method of fixing both ends of the thin plate for stretching. However, in this way, the overall stretching force on the thin plate is uneven during stretching. After stretching, the thickness at the positions near the two fixed ends of the thin plate is smaller than the thickness at the center position of the thin plate, and the closer to the center position of the thin plate, the thicker the thickness. If there are quality problems with the thin plate itself and some positions are thinner, it will cause the thin plate to break at the fixed positions at both ends during stretching, affecting the quality of the stretched thin plate. Summary of the Invention
[0004] The purpose of the utility model is to provide a stretching and forming device for low-expansion iron-nickel alloy thin plates, which can solve the problems of iron-nickel alloys.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A stretching and forming device for low-expansion iron-nickel alloy thin plates, including a stretching base. The stretching base includes a guiding side wall and a rolling base connected integrally. There are two guiding side walls symmetrically arranged, and the rolling base is arranged between the two guiding side walls. A cylinder is fixedly installed on the stretching base, and the telescopic end of the cylinder is fixedly connected to a pressing plate. A stretching groove is formed on the rolling base, and an iron-nickel alloy thin plate body can be placed in the stretching groove. When the telescopic end of the cylinder extends, the pressing plate contacts and presses down the iron-nickel alloy thin plate body. A rolling component for stretching the iron-nickel alloy thin plate body is arranged on each guiding side wall.
[0006] Preferably, the rolling component includes a guiding shaft rod and a rolling roller body integrally connected. There are two guiding shaft rods. After the two guiding shaft rods are installed at both ends of the rolling roller body, they can rotate coaxially. Guide grooves penetrating the guiding side walls are formed on both guiding side walls. The guiding shaft rods can slide in the guide grooves. One end of each guiding shaft rod extends to the outer wall of the guiding side wall and is fixedly connected with a rectangular block. The bottom of the outer surface of each rectangular block is fixedly connected with an outer sleeve. An inner sleeve is slidably sleeved on the inner wall of each outer sleeve. Electric guide rails are fixedly installed on the outer surface of each guiding side wall. Electric sliders are matched with each electric guide rail, and each electric guide rail is fixedly connected with the bottom of the inner sleeve. A pressure spring is sleeved on the outer surface of each inner sleeve. Each pressure spring is used for elastically connecting the outer sleeve and the electric slider.
[0007] Preferably, a compression groove surrounding the stretching groove is formed inside the rolling base. A reset spring is fixedly installed on the inner wall of the bottom of the compression groove. The top of the reset spring is fixedly connected with a movable plate. A diversion hole is formed on the inner wall of the compression groove. The diversion hole is used for communicating the compression groove and the stretching groove. A one-way valve is fixedly installed on the outer wall of the compression groove.
[0008] Preferably, the electric guide rail and the electric slider are used in cooperation with each other, and both are electrically connected to an external power supply. The air cylinder is electrically connected to an external power supply.
[0009] Preferably, the depth of the stretching groove is greater than the thickness of the iron-nickel alloy thin plate body, the width of the stretching groove is greater than the width of the iron-nickel alloy thin plate body, and the width of the stretching groove is the same as the length of the rolling roller body.
[0010] Preferably, the height of the horizontal position of one end of the guide groove close to the air cylinder gradually increases. The contact part between the pressing plate and the rolling roller body is rounded. The height of the horizontal position of the part of the guide groove for rolling the iron-nickel alloy thin plate body is the same.
[0011] Preferably, the shape of the movable plate is a T-shaped movable plate, and the lower end of the movable plate is slidably and hermetically installed in the compression groove. The horizontal position height of the top end of the movable plate is higher than the horizontal height of the part of the guide groove for rolling the iron-nickel alloy thin plate body, and the horizontal position height of the top end of the movable plate is lower than the height of the highest point of the horizontal position of the guide groove.
[0012] Preferably, the one-way valve can control the water flow to enter the inside of the compression groove from the outside of the compression groove.
[0013] Compared with the prior art, the beneficial effects of the present utility model are:
[0014] 1. In this application, by setting a cylinder, a pressing plate, a stretching groove, a rolling and pressing assembly and a guiding groove, the cylinder pushes the pressing plate downward to fix the iron-nickel alloy thin plate body. Subsequently, under the limiting action of the guiding groove, the rolling and pressing assembly performs rolling and stretching on the iron-nickel alloy thin plate body in the stretching groove. By the way of stretching the iron-nickel alloy thin plate body with the pressing roller, it can effectively reduce the situation of defective products caused by uneven stress at both ends of the iron-nickel alloy thin plate body during stretching, resulting in different overall thicknesses of the stretched iron-nickel alloy thin plate body.
[0015] 2. In this application, by setting a compression groove and a water injection assembly, while the rolling and pressing assembly performs rolling and stretching on the iron-nickel alloy thin plate body, the water injection assembly is made to work, contacting the side wall of the iron-nickel alloy thin plate body, reducing the situation of one end of the iron-nickel alloy thin plate body tilting during rolling and stretching. At the same time, due to the stretching and extension characteristics of the iron-nickel alloy thin plate body, the water is squeezed and wrapped on the surface of the iron-nickel alloy thin plate body, avoiding the situation that the part of the iron-nickel alloy thin plate body near the pressing plate is subjected to greater force and cannot withstand the force during rolling and stretching, resulting in fracture. Further improving the stretching effect of the iron-nickel alloy thin plate body and reducing the defective rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order 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 use in the description of the specific embodiments or the prior art. Obviously, the following drawings 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.
[0017] Figure 1 It is the overall structure view of the present invention;
[0018] Figure 2 It is the side schematic view of the present invention;
[0019] Figure 3 It is of the present invention Figure 2 The enlarged view of part A therein;
[0020] Figure 4 It is the front sectional view of the rolling and pressing base of the present invention;
[0021] Figure 5 It is of the present invention Figure 2 The enlarged view of part B therein.
[0022] Description of the reference numerals:
[0023] 1. Tensile seat; 2. Cylinder; 3. Pressing plate; 4. Invar thin plate body; 5. Tensile groove; 6. Roller pressing assembly; 7. Water injection assembly; 11. Guide side wall; 12. Roller pressing base; 13. Guide groove; 14. Compression groove; 61. Guide shaft rod; 62. Roller pressing body; 63. Rectangular block; 64. Outer sleeve; 65. Inner sleeve; 66. Pressure spring; 67. Electric slider; 68. Electric guide rail; 71. Movable plate; 72. Return spring; 73. Flow guiding hole; 74. Check valve. Detailed implementation manner
[0024] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0025] Please refer to Figures 1 to 5 , the present invention provides a technical solution:
[0026] A low-expansion invar thin plate stretching and forming device includes a tensile seat 1. The tensile seat 1 includes integrally connected guide side walls 11 and a roller pressing base 12. There are two symmetrically arranged guide side walls 11, and the roller pressing base 12 is arranged between the two guide side walls 11. A cylinder 2 is fixedly installed on the tensile seat 1, and the telescopic end of the cylinder 2 is fixedly connected to a pressing plate 3. A tensile groove 5 is opened on the roller pressing base 12, and the invar thin plate body 4 can be placed in the tensile groove 5. When the telescopic end of the cylinder 2 extends, the pressing plate 3 contacts and presses down the invar thin plate body 4. A roller pressing assembly 6 for stretching the invar thin plate body 4 is arranged on each guide side wall 11.
[0027] The roller pressing assembly 6 includes integrally connected guide shaft rods 61 and a roller pressing body 62. There are two guide shaft rods 61. After the two guide shaft rods 61 are installed at both ends of the roller pressing body 62, they can rotate coaxially. Guide grooves 13 penetrating the guide side walls 11 are opened on both guide side walls 11, and the guide shaft rods 61 can slide in the guide grooves 13. One end of each guide shaft rod 61 extends to the outer wall of the guide side wall 11 and is fixedly connected to a rectangular block 63. The bottom of the outer surface of each rectangular block 63 is fixedly connected to an outer sleeve 64. The inner wall of each outer sleeve 64 is slidably sleeved with an inner sleeve 65. An electric guide rail 68 is fixedly installed on the outer surface of each guide side wall 11. An electric slider 67 is matched on each electric guide rail 68, and each electric guide rail 68 is fixedly connected to the bottom of the inner sleeve 65. A pressure spring 66 is sleeved on the outer surface of each inner sleeve 65, and each pressure spring 66 is used for elastically connecting the outer sleeve 64 and the electric slider 67.
[0028] The electric guide rail 68 and the electric slider 67 are used in cooperation with each other, and both are electrically connected to an external power supply. The air cylinder 2 is electrically connected to an external power supply.
[0029] The depth of the stretching groove 5 is greater than the thickness of the iron-nickel alloy thin plate body 4, the width of the stretching groove 5 is greater than the width of the iron-nickel alloy thin plate body 4, and the width of the stretching groove 5 is the same as the length of the roller body 62.
[0030] By adopting the above technical solution, when stretching the iron-nickel alloy thin plate body 4, first manually place the iron-nickel alloy thin plate body 4 in the stretching groove 5 of the roller pressing base 12, and then control the air cylinder 2 to move downward through an external power supply. During the downward movement of the air cylinder 2, the pressing plate 3 presses down the iron-nickel alloy thin plate body 4 and fixes it in the stretching groove 5. At this time, control the electric slider 67 to move on the electric guide rail 68 through an external power supply. When the electric slider 67 moves, it will drive the roller body 62 to roll the iron-nickel alloy thin plate body 4 through the inner sleeve 65, the outer sleeve 64, the rectangular block 63, and the guiding shaft rod 61. When the roller body 62 moves, it will roll the iron-nickel alloy thin plate body 4 below by moving in the guiding groove 13 through the guiding shaft rod 61. When rolling the iron-nickel alloy thin plate body 4, the roller body 62 will make the iron-nickel alloy thin plate body 4 thinner, radially expand on both sides, and axially elongate at one end, so as to achieve the purpose of stretching the iron-nickel alloy thin plate body 4. Here, it should be particularly noted that when the un-stretched part of the end of the iron-nickel alloy thin plate body 4 fixed by the pressing plate 3 needs to be processed, methods including reversing the fixed end of the iron-nickel alloy thin plate body 4 for rolling and stretching can be adopted, but are not limited to this method, and a direct truncation method can also be adopted. The method of stretching the iron-nickel alloy thin plate body 4 by the roller can effectively reduce the situation that the overall thickness of the stretched iron-nickel alloy thin plate body 4 is different due to uneven stress at both ends of the iron-nickel alloy thin plate body 4 during stretching, resulting in defective products.
[0031] Specifically, as Figure 1 and Figure 2 shown, the horizontal position height of the guiding groove 13 gradually increases near the air cylinder 2, the contact part between the pressing plate 3 and the roller body 62 is rounded, and the horizontal position height of the part of the guiding groove 13 for rolling the iron-nickel alloy thin plate body 4 is the same.
[0032] By adopting the above technical solution, in the way that the horizontal position height of one end of the guiding groove 13 close to the cylinder 2 gradually increases, the surface of the iron-nickel alloy thin plate body 4 can be gradually pressed down by the roller body 62, so that there is a gradually stretching action on the surface of the iron-nickel alloy thin plate body 4. If it is directly pressed down, the pressure at a single position may be too large, resulting in the situation that one end of the thin plate warps, which is not convenient for subsequent continuous stretching actions. Moreover, the contact part between the pressing plate 3 and the roller body 62 is rounded, which can avoid the situation that the pressing plate 3 is directly damaged by the roller body 62. And when the roller body 62 contacts the pressing plate 3, the roller body 62 will gradually move upward along the guiding groove 13 due to the design that the horizontal position height of one end of the guiding groove 13 close to the cylinder 2 gradually increases, and the roller body 62 gradually moves away from the pressing plate 3;
[0033] When the guiding shaft rod 61 moves at the position where the horizontal height of the guiding groove 13 changes, at this time, the inner sleeve 65 will slide in the outer sleeve 64, and at the same time, the pressure spring 66 will expand and contract due to the movement of the inner sleeve 65. When the inner sleeve 65 moves upward into the outer sleeve 64, the pressure spring 66 will elongate at this time. When the inner sleeve 65 moves downward and moves out of the outer sleeve 64, the pressure spring 66 will contract at this time, so as to cooperate with the change of the horizontal position height of the guiding groove 13.
[0034] Specifically, as Figure 1 、 Figure 2 、 Figure 4 and Figure 5 shown, a compression groove 14 surrounding the stretching groove 5 is opened inside the roller pressing base 12. A return spring 72 is fixedly installed on the inner wall of the bottom of the compression groove 14. The top of the return spring 72 is fixedly connected to a movable plate 71. A diversion hole 73 is opened on the inner wall of the compression groove 14. The diversion hole 73 is used to connect the compression groove 14 and the stretching groove 5. A one-way valve 74 is fixedly installed on the outer wall of the compression groove 14.
[0035] The movable plate 71 is in the shape of a T-shaped movable plate 71, and the lower end of the movable plate 71 is slidably and sealedly installed in the compression groove 14. The horizontal position height of the top end of the movable plate 71 is higher than the horizontal position height of the part of the guiding groove 13 for roller pressing the iron-nickel alloy thin plate body 4, and the horizontal position height of the top end of the movable plate 71 is lower than the highest horizontal position height of the guiding groove 13.
[0036] The one-way valve 74 can control the water flow to enter the inside of the compression groove 14 from the outside of the compression groove 14.
[0037] By adopting the above technical solution, when the rolling component 6 performs rolling and stretching on the iron-nickel alloy thin plate body 4, the guide shaft rod 61 moving in the guide groove 13 will press down the movable plate 71. The movable plate 71 moves downward and enters the compression groove 14, while causing the return spring 72 to contract. When the movable plate 71 moves downward, it will push the water in the compression groove 14 into the stretching groove 5 through the diversion hole 73. By means of water, the adhesion between the iron-nickel alloy thin plate body 4 and the bottom of the stretching groove 5 is increased, and the situation that one end of the iron-nickel alloy thin plate body 4 warps up during rolling and stretching is reduced. At the same time, when the iron-nickel alloy thin plate body 4 is rolled and stretched, the iron-nickel alloy thin plate body 4 will become thinner, the side walls will extend, and the rolled end will also extend. At this time, the rolled and extended iron-nickel alloy thin plate body 4 will squeeze the water on both sides, and then the water will cover the entire iron-nickel alloy thin plate body 4, avoiding the situation that the part of the iron-nickel alloy thin plate body 4 close to the pressing plate 3 is subjected to greater force and cannot withstand the force during rolling and stretching, resulting in fracture, further improving the stretching effect of the iron-nickel alloy thin plate body 4 and reducing the defective rate.
[0038] After completing the work of rolling and stretching the iron-nickel alloy thin plate body 4, at this time, the entire rolling component 6 moves to the highest point of the guide groove 13. At this time, the movable plate 71 is not squeezed, the return spring 72 rebounds, and there is no water in the compression groove 14 at this time. Then, water can be injected into the compression groove 14 through the one-way valve 74. It should be particularly noted here that the way of injecting water through the one-way valve 74 can be realized by inserting a water pipe of an external pump into the one-way valve 74 for water injection, which is convenient for the next rolling and stretching water injection work.
[0039] Working principle: When stretching the iron-nickel alloy thin plate body 4, first manually place the iron-nickel alloy thin plate body 4 in the stretching groove 5 of the rolling base 12. Subsequently, control the cylinder 2 to move downward through an external power supply. During the downward movement of the cylinder 2, the pressing plate 3 is driven to press down the iron-nickel alloy thin plate body 4 and fix it in the stretching groove 5. At this time, control the electric slider 67 to move on the electric guide rail 68 through an external power supply. When the electric slider 67 moves, it will drive the roller body 62 to roll the iron-nickel alloy thin plate body 4 through the inner sleeve 65, the outer sleeve 64, the rectangular block 63, and the guide shaft rod 61. When the roller body 62 moves, it will roll the iron-nickel alloy thin plate body 4 below by moving in the guide groove 13 through the guide shaft rod 61. When rolling the iron-nickel alloy thin plate body 4, the roller body 62 will make the iron-nickel alloy thin plate body 4 thinner, radially expand on both sides, and axially elongate at one end, so as to achieve the purpose of stretching the iron-nickel alloy thin plate body 4. By stretching the iron-nickel alloy thin plate body 4 with the roller, the situation that the overall thickness of the stretched iron-nickel alloy thin plate body 4 is different due to uneven force at both ends of the iron-nickel alloy thin plate body 4 during stretching, resulting in defective products, can be effectively reduced.
[0040] 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 it; 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 described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A low expansion iron-nickel alloy sheet stretching forming device, comprising a stretching seat (1), the stretching seat (1) comprising a guide side wall (11) and a rolling base (12) connected in one piece, the guide side wall (11) being symmetrically arranged with two, the rolling base (12) being arranged between the two guide side walls (11), characterized in that: The stretching seat (1) is fixedly mounted with a cylinder (2), the telescopic end of the cylinder (2) is fixedly connected to a pressure plate (3), the rolling base (12) is provided with a stretching groove (5), the iron-nickel alloy sheet body (4) can be placed in the stretching groove (5), the telescopic end of the cylinder (2) is extended so that the pressure plate (3) contacts and presses down the iron-nickel alloy sheet body (4), and each of the guide side walls (11) is provided with a rolling assembly (6) for stretching the iron-nickel alloy sheet body (4).
2. A low expansion iron-nickel alloy sheet stretching forming device according to claim 1, characterized in that: The rolling assembly (6) comprises a guide shaft (61) and a roller body (62) connected in one piece. Two guide shafts (61) are provided. The two guide shafts (61) and the roller body (62) can rotate coaxially after being installed at both ends. The two guide side walls (11) are each provided with a guide groove (13) penetrating the guide side wall (11). The guide shaft (61) can slide in the guide groove (13). One end of each guide shaft (61) extends to the outer wall of the guide side wall (11) and is fixedly connected to a rectangular block (63). Each rectangular block (63) is provided with a guide groove (13) penetrating the guide side wall (11). The bottom of the outer surface of the block (63) is fixedly connected to the outer sleeve (64), the inner wall of each outer sleeve (64) is slidably sleeved with an inner sleeve (65), the outer surface of each guide side wall (11) is fixedly installed with an electric rail (68), each electric rail (68) is matched with an electric slider (67), and each electric rail (68) is fixedly connected to the bottom of the inner sleeve (65), the outer surface of each inner sleeve (65) is sleeved with a pressure spring (66), and each pressure spring (66) is used to elastically connect the outer sleeve (64) and the electric slider (67).
3. A low expansion iron-nickel alloy sheet stretching forming device according to claim 2, characterized in that: The interior of the rolling base (12) is provided with a compression groove (14) surrounding the stretching groove (5); a reset spring (72) is fixedly installed on the inner wall of the bottom of the compression groove (14); the top of the reset spring (72) is fixedly connected to the movable plate (71); the inner wall of the compression groove (14) is provided with a guide hole (73); the guide hole (73) is used to connect the compression groove (14) and the stretching groove (5); and a one-way valve (74) is fixedly installed on the outer wall of the compression groove (14).
4. A low expansion iron-nickel alloy sheet stretching forming device according to claim 3, characterized in that: The electric guide rail (68) and the electric slider (67) are used in conjunction with each other, and both are electrically connected to an external power source, and the cylinder (2) is electrically connected to the external power source.
5. A low expansion iron-nickel alloy sheet stretching forming device according to claim 4, characterized in that: The depth of the stretching groove (5) is greater than the thickness of the iron-nickel alloy thin plate body (4), the width of the stretching groove (5) is greater than the width of the iron-nickel alloy thin plate body (4), and the width of the stretching groove (5) is the same as the length of the pressure roller body (62).
6. A low expansion iron-nickel alloy sheet stretching forming device according to claim 5, characterized in that: The horizontal position height of one end of the guide groove (13) close to the cylinder (2) gradually increases, the contact portion of the pressure plate (3) and the pressure roller body (62) is rounded, and the horizontal position height of the portion of the guide groove (13) used for rolling the iron-nickel alloy thin plate body (4) is the same.
7. A low expansion iron-nickel alloy sheet stretching forming device according to claim 6, characterized in that: The movable plate (71) is in the shape of a T-shaped movable plate (71), and the lower end of the movable plate (71) is slidingly sealed and installed in the compression groove (14). The horizontal position height of the top end of the movable plate (71) is higher than the horizontal height of the guide groove (13) used for rolling the iron-nickel alloy sheet body (4), and the horizontal position height of the top end of the movable plate (71) is lower than the height of the highest point of the horizontal position of the guide groove (13).
8. A low expansion iron-nickel alloy sheet stretching forming device according to claim 7, characterized in that: The one-way valve (74) can control the water flow from the outside of the compression groove (14) into the inside of the compression groove (14).