Coil spring production equipment

Abstract

The invention relates to coil spring production equipment which comprises a rack, a feeding device internally provided with a metal material strip, a deviation rectifying and oil scraping device, two sets of position-adjustable oil scraping pieces arranged in the deviation rectifying and oil scraping device, a tension adjusting device and a forming device, and the oil scraping pieces can automatically get close to and press the metal material strip along with movement of the metal material strip. And a traction device. By means of an oil scraping piece in the deviation rectifying and oil scraping device, when the metal strip is machined into a coil spring, the deviation rectifying and oil scraping device can adjust the metal strip in the moving direction, meanwhile, in the moving process of the metal strip, oil stains outside the metal strip are scraped through the oil scraping piece, and therefore the metal strip is machined into the coil spring. And meanwhile, the oil scraping piece can automatically detect the positive pressure on the metal material strip, so that when the positive pressure is not enough due to abrasion, the oil scraping piece can automatically deflect to enhance the positive pressure on the metal material strip, and therefore the oil scraping piece continuously keeps extruding the metal material strip, and the oil scraping effect is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of coil spring production, and in particular to a coil spring production device. Background Art

[0002] Coil springs, also known as clockwork springs, store energy by twisting the spring and applying a load at its end. When the spring is released, it rotates in the opposite direction at a gradually increasing speed and converts the stored energy into motion. This gradual release of energy makes coil springs ideal for use in devices that require a gradual release of energy.

[0003] There are many factors that determine the degree of curling of the spring, such as the number of turns of the spring itself, the winding speed and tension of the spring in the spring winding machine, the tensile strength and elastic modulus of the material itself.

[0004] When the existing spring coiling machine is in use, before the metal strip is coiled and formed, the metal strip used needs to be treated with rust prevention, so a layer of oil will be coated on the metal strip to prevent oxidation and rust. When preparing the coiled spring, the oil on the outside of the metal strip needs to be scraped off to ensure that the tension and coiling speed of the metal strip during coiling are not affected. The existing equipment mainly clamps the two sides of the metal strip by two fixed clamping blocks, and as the metal strip moves and is transported, the oil on both sides of the metal strip is scraped off.

[0005] However, when the oil on the outside of the metal strip is scraped off using the above-mentioned technical solution, the clamping block may be worn out during long-term use, resulting in insufficient clamping force on the metal strip during the oil scraping process. The oil remaining on the surface of the metal strip may cause unnecessary side slip of the metal strip during subsequent clamping, transportation, tensioning and other processes, thereby adversely affecting the accuracy of coil spring production. Summary of the invention

[0006] The present application provides a coil spring production device, which can solve the problem that when scraping oil from a metal strip, the accuracy of the final formed coil spring is adversely affected due to insufficient clamping force.

[0007] The technical solution of this application is as follows: A coil spring production device, characterized in that it comprises: frame; A feeding device for metal strips is provided inside, the feeding device is arranged on one side of the upper end of the frame, the metal strips are arranged in a circle in the feeding device and can be pulled out of the feeding device; A deflection correcting and scraping oil device, the deflection correcting and scraping oil device is arranged on the frame and located at the discharge side of the feeding device, the deflection correcting and scraping oil device comprises two groups of scraping oil members arranged at intervals along the direction in which the metal strip is pulled and advanced, the two scraping oil members are arranged above the metal strip, and the two scraping oil members can automatically press the metal strip as the metal strip moves relative to the scraping oil members; A tension adjusting device, which is arranged on the frame and located on a side of the deviation correcting and oil scraping device away from the feeding device; A forming device, which is arranged on the frame and located on a side of the tension adjusting device away from the feeding device, and is used for extruding the metal strip and bending the metal strip into shape; The traction device is arranged on the frame and is located on the side of the forming device away from the feeding device, and is used to pull the metal strip to move. The metal strip moves under the two oil scrapers and drives the oil scrapers to rotate downward and press the metal strip.

[0008] By adopting the above scheme, the oil scraper inside the correcting and scraping device is utilized, so that when the device processes the metal strip into a coil spring, the correcting and scraping device can adjust the moving direction of the metal strip. At the same time, during the movement of the metal strip, the oil scraper is utilized to scrape the oil stains on the outside of the metal strip. At the same time, the oil scraper can automatically detect its own positive pressure on the metal strip, so that when the positive pressure is insufficient due to wear, it can automatically deflect and strengthen the positive pressure on the metal strip, so that the oil scraper can continuously maintain the squeezing of the metal strip to ensure the oil scraping effect.

[0009] In one embodiment of the present application, the deviation correcting and oil scraping device further comprises: A fixing frame is fixedly mounted on the frame, openings are provided on both sides of the fixing frame, and two groups of oil scraping members are respectively arranged in the two openings.

[0010] In one embodiment of the present application, the oil scraper comprises: A vertically arranged rotating column, wherein a threaded rod coaxial with the rotating column is arranged at the top of the rotating column, the threaded rod is threadedly connected to the top inner wall of the opening, and a rubber layer is arranged at the bottom of the rotating column; A fixed platform, the fixed platform is assembled on the frame and is located below the rotating column, a correction channel for the metal strip to pass through is arranged at the top of the fixed platform, and the projection of the correction channel on the rotating column is located between the axis and the generatrix of the rotating column; Two limit blocks are arranged on the fixing platform at intervals, and the deviation correction channel is formed between the two limit blocks. The depth of the deviation correction channel is less than the thickness of the metal strip.

[0011] By adopting the above scheme, when the metal strip moves inside the correction channel, the rotating column can move downward by rotating the threaded rod until the rubber layer below is squeezed on the surface of the metal strip and cannot move further, thereby squeezing the surface of the metal strip and causing the oil on its surface to fall. When wear and the like occurs, the gap between the rubber layer and the metal strip becomes larger, and the rubber layer automatically rebounds. At this time, due to the friction between the surface of the metal strip and the rubber layer, the rotating column can be driven to automatically deflect, so that the threaded rod can continue to be screwed downward, so that the rubber layer continues to press the metal strip until the rotating column cannot rotate, so that the device can automatically detect the pressing force and tighten the metal strip to scrape out the oil on the metal strip.

[0012] In one embodiment of the present application, the tension adjustment device comprises: A stand, the stand being mounted on the frame; Two sets of first guide wheel assemblies, the two sets of first guide wheel assemblies are rotatably assembled on the stand at an interval and are located on the same horizontal line; A first telescopic cylinder, which is vertically arranged and fixedly assembled on the upper top of the stand; The second guide wheel assembly, the driving shaft of the first telescopic cylinder passes through two groups of the first guide wheel assemblies and is rotatably assembled with the second guide wheel assembly.

[0013] By adopting the above scheme, when the metal strip is processed into a coil spring, it is ensured that the metal strip has a certain tension when it is bent into shape. At the same time, when it is necessary to reserve a straight section after processing into the coil spring, the metal strip can be loosened, thereby reserving a straight section length when the metal strip is curled and continues to move.

[0014] In one embodiment of the present application, the first guide wheel assembly and the second guide wheel assembly both include: A first disc, wherein a cavity is provided inside the first disc, and a threaded column coaxial with the first disc is provided inside the cavity; A second disc, one side of which is fixedly equipped with a threaded tube coaxial with the second disc, the inner wall of which is provided with threads and matched with the threads of the threaded column.

[0015] By adopting the above scheme, using the first disc and the second disc, the device can adjust the distance between the two discs according to the metal strips of different widths, thereby adjusting the length of the threaded tube penetrating into the cavity. When the metal strip is wrapped around the outside of the threaded tube, the rotation of the first disc and the second disc can drive the metal strip to move, and at the same time can also correct the deviation and limit the position of the metal strip.

[0016] In one embodiment of the present application, the molding device comprises: A forming frame, the forming frame is fixedly mounted on the frame, and a second cylinder placed horizontally is provided on the forming frame; A guide rod, the guide rod being horizontally mounted on the forming frame; A movable frame, the movable frame is slidably mounted on the guide rod along the length direction of the guide rod, and the movable frame is connected and fixed to the driving shaft of the second cylinder; An extrusion wheel assembly, the extrusion wheel assembly comprising: A rotating bracket, wherein the rotating bracket is assembled on the moving bracket; An air expansion shaft, the air expansion shaft is rotatably mounted on the movable frame, the end of the air expansion shaft is rotatably connected to a vent pipe through a sealed bearing, and the vent pipe is communicated with the air expansion shaft; The roller is arranged outside the air-expanding shaft. The air-expanding shaft expands or contracts to tighten or loosen the roller outside the air-expanding shaft. The frame is provided with an arc-shaped depression matched with the roller.

[0017] By adopting the above scheme, when it is necessary to extrude the metal strip and bend it into shape, the movable frame can drive the roller to move and approach the arc-shaped depression, thereby driving the metal strip to be bent at the arc-shaped depression. As the metal strip continues to move, the metal strip can be continuously bent during the extrusion process, so that the metal strip is bent into shape and automatically curled into a coil spring. At the same time, when the metal strip is released, the roller can be released at the same time and driven to retreat, so that the roller will not squeeze the metal strip, thereby ensuring that the metal strip will not be squeezed and deformed in the reserved straight section.

[0018] In one embodiment of the present application, the traction device comprises: A traction frame, which is vertically arranged and fixedly mounted on the frame; A fixed wheel, the fixed wheel is rotatably mounted on the traction frame; A third cylinder, the third cylinder is vertically mounted on the top of the traction frame; A clamping wheel is rotatably mounted on the driving shaft of the third cylinder, and the clamping wheel moves up and down to approach or move away from the fixed wheel.

[0019] By adopting the above solution, when the metal strip needs to be pulled and moved and coil springs are continuously produced, the clamping wheel is used to approach the fixed wheel, and the metal strip is clamped between the fixed wheel and the clamping wheel. The friction force generated by the clamping is used to pull the metal strip so that it can continue to move inside the device.

[0020] In one embodiment of the present application, the feeding device comprises: A feeding bracket, the feeding bracket is fixedly mounted on the frame; A material tray is rotatably mounted on the material feeding bracket.

[0021] By adopting the above solution, the metal strip is wound inside the material tray in advance, and when one end of the metal strip is pulled, the material tray rotates on the feeding bracket, thereby automatically releasing the metal strip.

[0022] In one embodiment of the present application, the coil spring production equipment further includes a quenching device, which is disposed on the frame and located on one side of the feeding device, and the quenching device includes: A host, which is arranged on the frame and located inside the fixing frame; The electromagnetic heating coil is arranged outside the metal strip and is electrically connected to the host.

[0023] By adopting the above solution, during the process of the metal strip being pulled and moved, the metal strip can pass through the electromagnetic heating coil and be heated by the electromagnetic heating coil, thereby improving the toughness of the metal strip.

[0024] In one embodiment of the present application, the coil spring production equipment further includes a cutting device, which is arranged on the other side of the frame, and the cutting device includes: A fourth cylinder, the fourth cylinder is vertically arranged and fixedly mounted on a side wall of the traction frame away from the feeding device; A cutter is fixedly mounted on the driving shaft of the fourth cylinder.

[0025] By setting a cutter, when the metal strip moves below the cutter after being curled and formed, the fourth cylinder controls the cutter to move downward, and the cutter can automatically cut off the curled spring, thereby continuously producing multiple springs.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By adopting an oil scraper that can compress the metal strip, the friction between the metal strip and the rubber layer is used to drive the oil scraper to rotate. During rotation, the rubber layer is driven downward through threaded engagement, and the metal strip is continuously squeezed, thereby ensuring the pressure of the rubber layer on the metal strip, thereby ensuring the effect of scraping oil from the surface of the metal strip.

[0027] 2. By using an air shaft to fix the roller and squeeze the metal strip so that it can be bent and formed, the metal strip can be deformed normally. When there is no need to pressurize the metal strip, the roller can be loosened and the roller will not squeeze the metal strip and cause it to deform, thereby improving the accuracy of coil spring production.

[0028] 3. By setting up a first guide wheel assembly and a second guide wheel assembly with adjustable spacing, when the device faces metal strips of different widths, the second disc can be rotated on the first disc so that the second disc can be close to or away from the first disc, thereby allowing the metal strip to move while following the rotation of the threaded tube. The widths of the first guide wheel assembly and the second guide wheel assembly can also be adjusted to have a limiting effect on metal strips of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a plan view of a coil spring production device provided in an embodiment of the present application; Figure 2 It is a schematic plan view of a coil spring production equipment forming device provided in an embodiment of the present application when extruding a metal strip; Figure 3 It is a plan view of a coil spring production equipment forming device provided in an embodiment of the present application when releasing a metal strip; Figure 4 It is a plan view of a deviation correction channel of a forming device of a coil spring production equipment provided in an embodiment of the present application; Figure 5 It is a front view of an oil scraping member of a forming device of a coil spring production equipment provided in an embodiment of the present application; Figure 6 It is a plan view of an air expansion shaft of a forming device of a coil spring production equipment provided in an embodiment of the present application; Figure 7 It is a front view of a first disc of a forming device of a coil spring production equipment provided in an embodiment of the present application.

[0030] Description of the accompanying drawings: 1, frame; 11, arc-shaped depression; 2, feeding device; 21, feeding bracket; 22, material tray; 3, deviation correction and oil scraping device; 31, fixed frame; 311, opening; 32, oil scraping member; 321, rotating column; 3211, threaded rod; 3212, rubber layer; 322, fixed platform; 323, limit block; 3231, deviation correction channel; 4, tension adjustment device; 41, stand; 42, first guide wheel assembly; 43, first telescopic cylinder; 44, second guide wheel assembly; 421, first disc; 4211, cavity; 4212, threaded column; 42 2. Second disc; 4221. Threaded tube; 5. Forming device; 51. Forming frame; 511. Second cylinder; 52. Guide rod; 53. Moving frame; 54. Extrusion wheel assembly; 541. Rotating bracket; 542. Inflatable shaft; 5420. Sealed bearing; 5421. Ventilation pipe; 543. Roller; 6. Traction device; 61. Traction frame; 62. Fixed wheel; 63. Third cylinder; 64. Clamping wheel; 7. Quenching device; 71. Main machine; 72. Electromagnetic heating coil; 8. Cutter device; 81. Fourth cylinder; 82. Cutter; 9. Metal strip. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-7 The coil spring production equipment provided in the present application is further described in detail.

[0032] See also Figure 1, is a coil spring production equipment provided in an embodiment of the present application, comprising: a frame 1, a feeding device 2, a deflection correction and scraping device 3, a tension adjusting device 4, a forming device 5 and a traction device 6, wherein a metal strip 9 is arranged inside the feeding device 2, the feeding device 2 is arranged on one side of the upper end of the frame 1, the metal strip 9 is arranged in a circle in the feeding device 2 and can be pulled out of the feeding device 2, the deflection correction and scraping device 3 is arranged on the frame 1 and is located on the discharge side of the feeding device 2, the deflection correction and scraping device 3 comprises two groups of scraping members 32 arranged at intervals along the direction in which the metal strip 9 is pulled and traveled, the two scraping members 32 are arranged above the metal strip 9, the two scraping members 32 can automatically press the metal strip 9 with the relative movement between the metal strip 9 and the scraping members 32, the tension adjusting device 4 is arranged on the frame 1 and is located on the deflection correction and scraping device The device 3 is located on a side away from the feeding device 2, the forming device 5 is arranged on the frame 1 and is located on a side of the tension adjusting device 4 away from the feeding device 2, and is used to extrude the metal strip 9 and bend the metal strip 9 into shape. The traction device 6 is arranged on the frame 1 and is located on a side of the forming device 5 away from the feeding device 2, and is used to traction the metal strip 9 to move. The metal strip 9 moves under the two oil scraping members 32, and drives the oil scraping members to rotate downward and press the metal strip 9. By setting the oil scraping member 32 that can clamp the metal strip 9 and automatically tighten it as the metal strip 9 moves, the device can scrape the oil on the surface of the metal strip 9 more cleanly, avoiding lateral displacement due to the smooth surface of the metal strip 9, so that the metal strip 9 can be scraped, quenched, tension adjusted and bent into shape during the traction process, thereby improving the accuracy of coil spring production.

[0033] In this embodiment, the coil spring includes a straight section and a coiled section, and the straight section is integrally connected to the coiled section.

[0034] In this embodiment, the spring production equipment also includes a power supply device and a controller. The power supply device is electrically connected to the controller, the tension adjustment device 4, the forming device 5 and the traction device 6. The controller can control the working status of the tension adjustment device 4, the forming device 5 and the traction device 6. The above-mentioned electrical connection methods are all existing conventional technologies, so they are not elaborated.

[0035] See also Figure 4 and Figure 5 The deflection correcting and scraping oil device 3 further comprises a fixing frame 31 , wherein the fixing frame 31 is fixedly mounted on the frame 1 , and openings 311 are provided on both sides of the fixing frame 31 , and two groups of the scraping oil members 32 are respectively arranged in the two openings 311 .

[0036] The oil scraper 32 includes: a rotating column 321, a fixed platform 322 and a limit block 323. The rotating column 321 is vertically arranged. A threaded rod 3211 coaxial with the rotating column 321 is arranged at the top of the rotating column 321. The threaded rod 3211 is threadedly connected to the top inner wall of the opening 311. A rubber layer 3212 is arranged at the bottom of the rotating column 321. The fixed platform 322 is assembled on the frame 1 and is located below the rotating column 321. A correction channel 3231 for the metal material strip 9 to pass through is arranged at the top of the fixed platform 322. The projection of the correction channel 3231 on the rotating column 321 is located between the axis and the generatrix of the rotating column 321. The number of the limit blocks 323 is set to two. The two limit blocks 323 are arranged on the fixed platform 322 at intervals. The correction channel 3231 is formed between the blocks 323, and the depth of the correction channel 3231 is less than the thickness of the metal strip 9. By arranging an oil scraper 32 that can continuously press the metal strip 9, the oil on the surface of the metal strip 9 can be scraped off. At the same time, when the rubber layer 3212 is not closely attached to the surface of the metal strip 9 due to wear, the rubber layer 3212 restores a certain amount of elastic deformation. Since the projection of the correction channel 3231 on the rotating column 321 is located between the axis and the generatrix of the rotating column 321, the metal strip 9 can drive the rotating column 321 to rotate around its own axis during the movement, so that the rotating column 321 drives the threaded rod 3211 to be screwed out under the cooperation of the thread during the rotation, and the rotating column 321 continues to approach the metal strip 9 to improve the pressing effect, thereby improving the oil scraping effect on the metal strip 9.

[0037] In this embodiment, the limiting block 323 may be a circular or elliptical block component.

[0038] See also Figure 1The tension adjustment device 4 includes: a stand 41, a first guide wheel assembly 42 and a first telescopic cylinder 43. The stand 41 is mounted on the frame 1. The number of the first guide wheel assemblies 42 is set to two groups. The two groups of first guide wheel assemblies are rotated and mounted on the stand 41 at intervals and are located on the same horizontal line. The first telescopic cylinder 43 is vertically arranged and fixedly mounted on the upper top of the stand 41. The second guide wheel assembly 44, the driving shaft of the first telescopic cylinder 43 passes through the two groups of the first guide wheel assemblies 42 and is connected to the first The two guide wheel assemblies 44 are rotatably assembled, and the tension adjustment device 4 is set, which is moved up and down by the first telescopic cylinder 43, and the distance between the second guide wheel assembly 44 and the two first guide wheel assemblies 42 is adjusted, so that the metal strip 9 can ensure a certain tension when being bent and formed, thereby improving the accuracy of the coil spring. At the same time, by adjusting the position of the second guide wheel assembly 44, the metal strip 9 is loosened, and the metal strip 9 is pulled and moved by the traction device 6, so that the device can pull and move a straight section of the coil spring when the metal strip 9 is not squeezed.

[0039] See also Figure 1 and Figure 7 The first guide wheel assembly 42 and the second guide wheel assembly 44 both include: a first disc 421 and a second disc 422. A cavity 4211 is provided inside the first disc 421. A threaded column 4212 coaxial with the first disc 421 is provided inside the cavity 4211. A threaded tube 4221 coaxial with the second disc 422 is fixedly assembled on one side of the second disc 422. The inner wall of the threaded tube 4221 is provided with threads, and the threads are matched with the threaded column 4212. By arranging the first guide wheel assembly 42 and the second guide wheel assembly 44 that can adjust the width, the first guide wheel assembly 42 and the second guide wheel assembly 44 can play a role of limiting and guiding according to the metal strips 9 of different widths.

[0040] See also Figure 2 , Figure 3 and Figure 6The forming device 5 includes: a forming frame 51, a guide rod 52, a moving frame 53, an extrusion wheel assembly 54, a rotating bracket 541, an air shaft 542 and a roller 543. The forming frame 51 is fixedly mounted on the frame 1. A horizontally placed second cylinder 511 is arranged on the forming frame 51. The guide rod 52 is horizontally mounted on the forming frame 51. The moving frame 53 is slidably mounted on the guide rod 52 along the length direction of the guide rod 52. The driving force of the moving frame 53 and the second cylinder 511 is The extrusion wheel assembly 54 includes: a rotating bracket 541, an air-expanding shaft 542 and a roller 543. The rotating bracket 541 is mounted on the mobile frame 53. The air-expanding shaft 542 is rotatably mounted on the mobile frame 53. The end of the air-expanding shaft 542 is rotatably connected to a vent pipe 5421 through a sealed bearing 5420. The vent pipe 5421 is communicated with the air-expanding shaft 542. The roller 543 is arranged outside the air-expanding shaft 542. The air-expanding shaft 542 is expanded or retracted to make The roller 543 is tensioned or loosened outside the air expansion shaft 542, and the frame 1 is provided with an arc-shaped recess 11 adapted to the roller 543. The movable frame 53 drives the roller 543 to enter the arc-shaped recess 11 to extrude the metal strip 9 into shape. By arranging the roller 543 that can approach or move away from the arc-shaped recess 11, the device can drive the roller 543 to extrude the metal strip 9 when it is necessary to extrude the metal strip 9 into shape, and extrude the metal strip 9 in the arc-shaped recess 11 to bend it into shape. At the same time, when there is no need to extrude the metal strip 9, the movable frame 53 can drive the metal strip 9 to retreat. During the retreat process, the air expansion shaft 542 is controlled to loosen the roller 543, so that there is a gap between the roller 543 and the air expansion shaft 542 that allows the roller 543 to move and move upward, thereby avoiding the trouble of simply controlling the roller 543 to move in one direction, which is not enough to make the roller 543 break away from the extrusion between the metal strip 9, so that when the metal strip 9 does not need to be extruded and bent, the straightness of its straight section can be guaranteed.

[0041] See also Figure 1 The traction device 6 includes: a traction frame 61, a fixed wheel 62, a third cylinder 63 and a clamping wheel 64. The traction frame 61 is vertically arranged and fixedly mounted on the frame 1. The fixed wheel 62 is rotatably mounted on the traction frame 61. The third cylinder 63 is vertically mounted on the top of the traction frame 61. The clamping wheel 64 is rotatably mounted on the driving shaft of the third cylinder 63. The clamping wheel 64 moves up and down to approach or move away from the fixed wheel 62. The clamping wheel 64 is controlled by the third cylinder 63 to approach the fixed wheel 62, and the fixed wheel 62 and the clamping wheel 64 are driven to squeeze each other. After squeezing, the clamping wheel 64 rotates, and the friction force is used to enable the metal strip 9 to move in the opposite direction of the rotation of the clamping wheel 64 during the rotation of the clamping wheel 64.

[0042] In this embodiment, the traction device 6 may further include a drive motor (not shown), which is arranged on the drive shaft of the third cylinder 63 and is located on the side away from the clamping wheel 64. The drive shaft of the drive motor passes through the drive shaft of the third cylinder 63 and is fixedly connected to the clamping wheel 64 to drive the clamping wheel 64 to rotate.

[0043] See also Figure 1 The feeding device 2 includes: a feeding bracket 21 and a material tray 22. The feeding bracket 21 is fixedly mounted on the frame 1, and the material tray 22 is rotatably mounted on the feeding bracket 21. The metal material strip 9 is wound on the material tray 22. When the traction device 6 pulls one end of the metal material strip 9 and the metal material strip 9 moves electrically, the movement of the metal material strip 9 can drive the material tray 22 to rotate automatically, thereby releasing the metal material strip 9 wound on the material tray 22.

[0044] See also Figure 1 The coil spring production equipment also includes a quenching device 7, which is arranged on the frame 1 and located on one side of the feeding device 2. The quenching device 7 includes: a main machine 71 and an electromagnetic heating coil 72. The main machine 71 is arranged on the frame 1 and located inside the fixed frame 31. The electromagnetic heating coil 72 is arranged outside the metal strip 9 and is electrically connected to the main machine 71. By setting the quenching device 7, the metal strip 9 can be heated at a high temperature to improve its toughness after passing through the electromagnetic heating coil 72.

[0045] See also Figure 1 The coil spring production equipment also includes a cutting device 8, which is arranged on the other side of the frame 1. The cutting device 8 includes: a fourth cylinder 81 and a cutter 82. The fourth cylinder 81 is vertically arranged and fixedly assembled on the side wall of the traction frame 61 away from the feeding device 2. The cutter 82 is fixedly assembled on the driving shaft of the fourth cylinder 81. When the metal strip 9 is bent and sent to the bottom of the cutter 82 under the traction of the traction device 6, the fourth cylinder 81 controls the cutter 82 so that the coil spring after bending can be cut off, thereby improving the working efficiency of the device.

[0046] In summary, when the metal strip 9 is processed into a coil spring by using the present device, first, the third cylinder 63 controls the clamping wheel 64 to clamp one end of the metal strip 9 on the fixed wheel 62, and turns on the driving motor to drive the clamping wheel 64 to rotate, thereby driving the metal strip 9 to rotate. When the metal strip 9 passes through the correction channel 3231 between the two limit blocks 323, the width of the correction channel 3231 between the two limit blocks 323 is limited, so that the skewed metal strip 9 can be guided so that it can move in the correct direction. At the same time, the metal strip 9 can move in the correct direction due to the device. The rotating column 321 is placed below the rotating column 321, and the projection of the metal strip 9 on the rotating column 321 is located between the axis of the rotating column 321 and the generatrix, so that when the metal strip 9 moves, the friction between the metal strip 9 and the rotating column 321 can provide a rotational force for the rotating column 321. When the rotating column 321 rotates, the threaded rod 3211 at the upper end of the rotating column 321 drives the rotating column 321 to move downward due to the cooperation between the threads, so that the rotating column 321 can clamp the metal strip 9 more tightly, so as to scrape off the oil on the surface of the metal strip 9. After the metal strip 9 is scraped off and passed through the quenching device 7, the high temperature heating can improve the toughness of the metal strip 9, and then passes through the tension adjustment device 4 and the forming device 5. Figure 2 As shown, the mobile frame 53 inside the forming device 5 is driven by the second cylinder 511 to approach the fixed frame 31, and drives the roller 543 below to enter the arc-shaped recess 11, and at the same time drives the metal strip 9 to bend and fit in the arc-shaped recess 11. After extrusion, the metal strip 9 is bent into shape, and under the traction of the traction device 6, a bending section required for the coil spring is pulled out; After the bending section is prepared, the second cylinder 511 drives the movable frame 53 away from the fixed frame 31, and the air expansion shaft 542 releases the roller 543. When the roller 543 moves away from the metal strip 9, the roller 543 is no longer fixed by the air expansion shaft 542, so that it moves upward under contact with the metal strip 9. The two movement modes are combined, so that the roller 543 can be quickly and effectively separated from the squeeze between the metal strip 9. At this time, Figure 2 As shown, the first cylinder drives the second guide wheel to move upward, and the traction device 6 continues to pull the metal strip 9. Under the traction action, the originally tensioned metal strip 9 is re-fitted and contacted with the second guide wheel that has moved upward. At this time, since the metal strip 9 is not squeezed and bent, the traction device 6 pulls out the straight section of the coil spring. Finally, the fourth cylinder 81 drives the cutter 82 to cut off the coil spring with the straight section and the bent section prepared, and the preparation of the coil spring is completed.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A coil spring production device, characterized in that: include: Rack (1); A feeding device (2) for metal strips is provided inside, the feeding device (2) being arranged on one side of the upper end of the frame (1), the metal strips being arranged in a circle inside the feeding device (2) and being able to be pulled out of the feeding device (2); A deflection correcting and scraping oil device (3), the deflection correcting and scraping oil device (3) being arranged on the frame (1) and located at the discharge side of the feeding device (2), the deflection correcting and scraping oil device (3) comprising two groups of scraping oil members (32) arranged at intervals along the direction in which the metal strip is pulled and advanced, the two scraping oil members (32) being arranged above the metal strip, and the two scraping oil members (32) being able to automatically press the metal strip as the metal strip and the scraping oil members (32) move relative to each other; A tension adjusting device (4), wherein the tension adjusting device (4) is arranged on the frame (1) and is located on a side of the deviation correcting and oil scraping device (3) away from the feeding device (2); A forming device (5), the forming device (5) being arranged on the frame (1) and located on a side of the tension adjusting device (4) away from the feeding device (2), and being used for extruding the metal strip and bending the metal strip into shape; A traction device (6), the traction device (6) is arranged on the frame (1) and is located on a side of the forming device (5) away from the feeding device (2), and is used to traction the metal strip to move, the metal strip moves under the two oil scraping members (32), and drives the oil scraping members to rotate downward and press the metal strip.

2. A coil spring production device according to claim 1, characterized in that: The deviation correcting and oil scraping device (3) further comprises: A fixing frame (31), the fixing frame (31) is fixedly mounted on the frame (1), openings (311) are provided on both sides of the fixing frame (31), and two groups of oil scraping members (32) are respectively arranged in the two openings (311).

3. A coil spring production device according to claim 2, characterized in that: The oil scraper (32) comprises: A vertically arranged rotating column (321), wherein a threaded rod (3211) coaxial with the rotating column (321) is arranged at the top end of the rotating column (321), wherein the threaded rod (3211) is threadedly connected to the inner wall of the top end of the opening (311), and a rubber layer (3212) is arranged at the bottom end of the rotating column (321); A fixed platform (322), the fixed platform (322) being mounted on the frame (1) and located below the rotating column (321); a correction channel (3231) for the metal strip to pass through is provided at the top of the fixed platform (322); a projection of the correction channel (3231) on the rotating column (321) is located between the axis and the generatrix of the rotating column (321); Two limit blocks (323), the two limit blocks (323) are arranged on the fixed platform (322) at an interval, the deviation correction channel (3231) is formed between the two limit blocks (323), and the depth of the deviation correction channel (3231) is less than the thickness of the metal strip.

4. The coil spring production equipment according to claim 1, characterized in that: The tension adjusting device (4) comprises: A stand (41), wherein the stand (41) is mounted on the frame (1); Two sets of first guide wheel assemblies (42), the two sets of first guide wheel assemblies (42) are rotatably assembled on the stand (41) at intervals and are located on the same horizontal line; A first telescopic cylinder (43), the first telescopic cylinder (43) is vertically arranged and fixedly assembled on the upper top of the stand (41); A second guide wheel assembly (44), wherein the driving shaft of the first telescopic cylinder (43) passes through two groups of the first guide wheel assemblies (42) and is rotatably assembled with the second guide wheel assembly (44).

5. A coil spring production device according to claim 4, characterized in that: The first guide wheel assembly (42) and the second guide wheel assembly (44) both include: A first circular disk (421), wherein a cavity (4211) is provided inside the first circular disk (421), and a threaded column (4212) coaxial with the first circular disk (421) is provided inside the cavity (4211); A second disc (422), one side of the second disc (422) is fixedly equipped with a threaded tube (4221) coaxial with the second disc (422), the inner wall of the threaded tube (4221) is provided with threads, and the threads are matched with the threaded column (4212).

6. The coil spring production equipment according to claim 1, characterized in that: The forming device (5) comprises: A forming frame (51), the forming frame (51) being fixedly mounted on the frame (1), and the forming frame (51) being provided with a second cylinder (511) placed horizontally; A guide rod (52), wherein the guide rod (52) is horizontally mounted on the forming frame (51); A movable frame (53), the movable frame (53) is slidably mounted on the guide rod (52) along the length direction of the guide rod (52), and the movable frame (53) is connected and fixed to the driving shaft of the second cylinder (511); An extrusion wheel assembly (54), the extrusion wheel assembly (54) comprising: A rotating bracket (541), wherein the rotating bracket (541) is mounted on the moving bracket (53); An air expansion shaft (542), the air expansion shaft (542) is rotatably mounted on the movable frame (53), the end of the air expansion shaft (542) is rotatably connected to a vent pipe (5421) via a sealing bearing (5420), and the vent pipe (5421) is in communication with the air expansion shaft (542); A roller (543), wherein the roller (543) is arranged outside the air-expanding shaft (542), and the air-expanding shaft (542) expands or contracts so that the roller (543) is tensioned or loosened outside the air-expanding shaft (542), and the frame (1) is provided with an arc-shaped recess (11) adapted to the roller (543).

7. The coil spring production equipment according to claim 1, characterized in that: The traction device (6) comprises: A traction frame (61), the traction frame (61) is vertically arranged and fixedly mounted on the frame (1); A fixed wheel (62), the fixed wheel (62) is rotatably mounted on the traction frame (61); A third cylinder (63), the third cylinder (63) being vertically mounted on the top of the traction frame (61); A clamping wheel (64), the clamping wheel (64) is rotatably mounted on the driving shaft of the third cylinder (63), and the clamping wheel (64) moves up and down to approach or move away from the fixed wheel (62).

8. The coil spring production equipment according to claim 1, characterized in that: The feeding device (2) comprises: A feeding bracket (21), wherein the feeding bracket (21) is fixedly mounted on the frame (1); A material tray (22), wherein the material tray (22) is rotatably mounted on the material supply bracket (21).

9. The coil spring production equipment according to claim 2, characterized in that: The coil spring production equipment further comprises a quenching device (7), wherein the quenching device (7) is arranged on the frame (1) and located on one side of the feeding device (2), and the quenching device (7) comprises: A host (71), the host (71) is arranged on the frame (1) and is located inside the fixing frame (31); An electromagnetic heating coil (72), wherein the electromagnetic heating coil (72) is arranged outside the metal strip and is electrically connected to the main machine (71).

10. The coil spring production equipment according to claim 7, characterized in that: The coil spring production equipment further comprises a cutting device (8), wherein the cutting device (8) is arranged on the other side of the frame (1), and the cutting device (8) comprises: A fourth cylinder (81), the fourth cylinder (81) is vertically arranged and fixedly mounted on a side wall of the traction frame (61) away from the feeding device (2); A cutter (82), wherein the cutter (82) is fixedly mounted on the drive shaft of the fourth cylinder (81).

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