Punch forming equipment and process for hardware fittings

Abstract

The invention discloses punch forming equipment for hardware fittings and a process of the punch forming equipment, and relates to the technical field of punching, the punch forming equipment comprises a punching machine and a feeding system, the feeding system comprises a feeding assembly, a swing rod and an adjusting assembly, and the swing rod can control the feeding assembly to intermittently convey blanks; the swing rod is controlled by the adjusting assembly to turn over, and meanwhile, the feeding assembly loosens clamping of the blank, so that the feeding action is paused; the adjusting assembly can control the initial position of the swing rod, so that the feeding assembly is suitable for blanks with different thicknesses; the adjusting assembly comprises a buffering part used for preventing the blank from generating indentations. The number of the adjusting assemblies is two, and the two adjusting assemblies can substitute for each other. And the oiling assembly is used for adding oil liquid into the blank and controlling the flow of the oil liquid through the adjusting assembly. By arranging the components, the problem that the blank generates indentations due to impact is effectively avoided, and the purpose of conveniently adjusting according to the plate thickness of the blank is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of sheet metal stamping, and in particular to stamping forming equipment and a process for stamping hardware accessories. Background Art

[0002] In the field of hardware accessories stamping processing, the automated feeding of plate blanks is a key link that determines production efficiency and finished product quality. Traditional intermittent feeding devices mostly use a rigid clamping roller structure, and control the start and stop of the rollers through a single drive mechanism. Some feeding devices keep the rollers in a closed clamping state when feeding stops, which can easily cause indentations or deformation on the surface of the blank due to continuous pressure, especially for thin plate materials; some feeding devices release the rollers when feeding stops, and rely on mechanical limiters to directly collide when the rollers are reset. The impact force is easily transmitted to the blank, causing microscopic damage, especially for materials with low hardness, affecting the subsequent stamping accuracy.

[0003] For example, a Chinese patent with application number 202310833373.6 discloses a continuous stamping device and method for fuel cell metal plates, including a servo press with a workbench, a pre-processing mechanism, a forming mechanism and a post-processing mechanism arranged on the workbench in sequence along the stamping process, a feeding mechanism arranged on the workbench and corresponding to the position of the pre-processing mechanism, and a multi-station conveying mechanism arranged on the workbench and capable of reciprocating between the pre-processing mechanism, the forming mechanism and the post-processing mechanism.

[0004] When the above technical solution is in use, the part that conveys the material belt cannot relax the material belt during stamping, which easily causes the material belt to bend and deform. In addition, it is not convenient to adjust the spacing between the conveying rollers when replacing material belts of different thicknesses. A smaller spacing easily causes the material belt to be compressed and damaged, while a larger spacing cannot guarantee accurate conveying of the material belt.

[0005] In addition, some existing feeding devices are prone to hit the blank when resetting the conveyor roller, resulting in indentations on the surface of the blank, affecting the accuracy and yield rate of the product.

[0006] Therefore, it is necessary to invent a stamping forming device and a process for hardware accessories to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a stamping forming device for hardware accessories and a process thereof to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stamping forming equipment for hardware accessories, comprising: a stamping machine, which is equipped with an upper die and a lower die, and is used for stamping and producing sheet metal products; a feeding system, which is used to intermittently convey the blank between the upper die and the lower die, and cooperate with the stamping action of the stamping machine, and the feeding system includes a feeding assembly, which is used to clamp and convey the blank; the feeding system is also provided with a swing rod and an adjustment assembly, and the swing rod can control the feeding assembly to intermittently convey the blank; the swing rod is controlled by the adjustment assembly to flip, and at the same time the feeding assembly relaxes the clamping of the blank, so that the upper die and the lower die are clamped, and the upper die and the lower die are clamped, so that the upper die and the lower die are clamped, and the upper die and the lower die are clamped, respectively. The feeding action is paused; the adjusting component can control the initial position of the swing arm, so that the feeding component is suitable for billets of different thicknesses; the adjusting component includes a buffer part, which is used to prevent the feeding component from causing indentations on the billet during intermittent feeding; there are two adjusting components, which are symmetrically arranged, and any one of the adjusting components can drive the swing arm to rotate, and the two adjusting components can replace each other; there are two oiling components, which correspond to the adjusting components respectively, can support the adjusting components, are used to add oil to the billet, and control the oil flow through the adjusting components.

[0009] Preferably, the two adjusting components drive the swing rod alternately; the adjusting component that does not drive the swing rod controls the output flow of the corresponding oiling component; and the oiling component corresponding to the adjusting component that drives the swing rod is closed.

[0010] Preferably, the feeding system further comprises: A fixed frame, which is a hollow structure, is connected to the punching machine on one side by bolts so that it can be installed on one side of punching machines of different models; an incoming material assembly, which is fixedly connected to the side of the fixed frame away from the punching machine, is used to support the blank and limit the working area of ​​the blank corresponding to the upper die and the lower die; a synchronous push plate, which is slidably connected to the middle of the fixed frame and has symmetrically arranged helical tooth plug plates fixedly connected at both ends, which is used to control the initial position of the swing arm through the adjustment assembly; a linear motor, which is fixedly connected to the middle of the fixed frame and has an output end fixedly connected to the synchronous push plate.

[0011] Preferably, each of the adjustment components comprises: A flip shaft, which is rotatably connected to the inner side of the fixed frame; a bevel cam, which is slidably mounted on the outer side of the flip shaft, and is used to drive the swing rod to flip, so as to realize intermittent conveying of the blank; a flip push plate, which is fixedly connected to the outer side of the flip shaft, and has a flip push groove in the middle, and an elastic member is provided between the flip push plate and the bevel cam, for driving the bevel cam to contact the swing rod; the other end of the bevel cam is in contact with the corresponding bevel tooth insert plate; a driving cylinder, whose output end is placed in the flip push groove, is used to push the swing rod to flip through the flip shaft and the bevel cam.

[0012] Preferably, the buffer portion comprises: A mounting groove is provided on the outer side of the inclined cam; a flexible pad is fixedly arranged in the corresponding mounting groove and can contact the swing rod, and the end face of the flexible pad protrudes from the end face of the inclined cam, so as to reduce the impact of the feeding assembly on the blank when clamping the blank.

[0013] Preferably, the feeding assembly comprises: A lower roller, both ends of which are rotatably connected to the middle of the fixed frame; an upper roller, which rotates synchronously with the lower roller and in opposite directions, and is rotatably connected to the end of the swing rod; a driving motor, whose output end is transmitted to the lower roller through a synchronous belt and a pulley, and is used to drive the upper and lower rollers to rotate; a blank is placed between the upper and lower rollers, and the blank is conveyed into between the upper and lower dies of the punching machine through the relative rotation of the upper and lower rollers.

[0014] Preferably, the swing arm comprises: A synchronous shaft, both ends of which are rotatably connected to the inner side of the fixed frame; two bending plates are provided and symmetrically arranged, the bending plates are fixedly connected to the outer side of the synchronous shaft, the two ends of the upper roller are respectively rotatably connected to the corresponding bending plates, and the lower end of the bending plate is in contact with the corresponding inclined cam; the synchronous shaft causes the bending plates on the left and right sides to swing simultaneously, controls the upper roller and the lower roller to clamp / relax the blank, and realizes the effect of intermittently conveying the blank.

[0015] Preferably, each of the oiling components comprises: A fixed sleeve is rotatably mounted on the corresponding end of the flip shaft and supports the flip shaft; an upper oil pipe runs through the middle of the fixed sleeve and is connected to a valve body at the bottom for controlling the conduction of oil, and the outlet of the upper oil pipe is placed above the blank; a flow limiting boss is fixedly connected to the corresponding end of the flip shaft and controls the flow of oil by squeezing the upper oil pipe.

[0016] Preferably, the incoming material assembly comprises: An arc-shaped support plate, which is symmetrically arranged on one side of the fixed frame; a support roller, which is rotatably connected between the two support plates and is used to support the blank to enter the feeding assembly; there are at least two limiting support rods, and there is a gap between the limiting support rods, and the limiting support rods are fixedly connected between the two arc-shaped support plates; a limiting slide, which is placed in the gap between the two limiting support rods and can be locked relative to the limiting support rods; there are at least two limiting slides, which are placed on both sides of the blank and are used to limit the position of the blank when it enters the feeding assembly.

[0017] The present invention also discloses a stamping forming process for hardware accessories, comprising the following steps: S1, loading, insert the blank into the loading system, and adjust the initial position of the swing rod so that the feeding assembly clamps the blank; S2, feeding, when the upper die and the lower die are separated, the feeding assembly pushes the blank to move a preset distance; S3, pausing feeding. When the upper die contacts the lower die, any of the adjusting components controls the swing rod to flip, so that the feeding component releases the blank, and the feeding action is paused; S4, continue feeding, when the upper die and the lower die are separated, the swing rod is reset, so that the feeding assembly clamps the blank and avoids causing hard impact on the blank, and then the feeding assembly continues to push the blank to move the preset distance toward the upper die and the lower die; S5, cycle stamping, cycle execution of S3 and S4; S6, oiling. During the execution of S2, S3 and S4, the regulating component that does not drive the swing rod to flip controls the corresponding oiling component to add oil to the surface of the blank; S7, alternately, set a delay, and after the delay is completed, swap the functions of the two adjustment components.

[0018] Technical effects and advantages of the present invention: 1. The present invention effectively solves the problem of indentation caused by impact on the blank when clamping the blank by arranging a lower roller, an upper roller, a swing rod and an adjustment component. During the resetting process of the swing rod, when the upper roller contacts the blank, the inclined cam continues to rotate to the initial position, and the lower end of the swing rod squeezes the flexible section to avoid indentation of the blank caused by rigid impact, effectively improving the yield rate of the product and reducing the noise caused by impact during production.

[0019] 2. The present invention effectively avoids the problem of being inconvenient to adjust according to the thickness of the blank by arranging a synchronous push plate, a beveled tooth insert plate and a beveled cam. When in use, the position of the synchronous push plate is adjusted so that the bevel of the beveled tooth insert plate squeezes the end of the beveled cam. At the same time, the swing rod drives the upper roller to flip relative to the lower roller, and adjusts the relative distance between the upper roller and the lower roller so that the blanks of different thicknesses can be passed, thereby avoiding the blanks being crushed due to the small distance between the upper roller and the lower roller, and the blanks cannot be stably and accurately conveyed due to the large distance between the upper roller and the lower roller, thereby effectively improving product quality.

[0020] 3. The present invention effectively increases the function of adding oil by setting an adjusting component and an oiling component. When in use, the valve body is opened to allow the oil to enter the upper oil pipe and drip on the top of the blank. The oil is distributed on the outside of the blank through the extrusion of the upper roller and the lower roller. At the same time, the flow limiting boss squeezes the upper oil pipe through the drive of the flip shaft to control the flow of the oil in the upper oil pipe, which effectively solves the problem that the oil amount cannot be adjusted when using blanks of different areas, avoids waste of oil, improves the stamping effect, and avoids high temperature of the stamping die.

[0021] 4. The present invention effectively avoids the problem of shutdown caused by damage to driving components by setting a swing rod and two adjustment components. When any adjustment component is damaged during use, its work can be replaced by another adjustment component, and the two adjustment components can also be made to work alternately at a fixed time, thereby improving the life of the equipment and avoiding equipment damage caused by long-term work. It can also avoid shutdown caused by feeding failure during stamping and reduce waste of blanks. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the overall structure of the feeding system in the present invention.

[0024] Figure 3 It is a cross-sectional view of the feeding system in the present invention.

[0025] Figure 4 It is a schematic diagram of the internal structure of the feeding system in the present invention.

[0026] Figure 5 It is a schematic diagram of the limiting structure of the upper roller in the present invention.

[0027] Figure 6 It is a schematic diagram of the state of the swing rod after flipping in the present invention.

[0028] Figure 7 It is an exploded schematic diagram of the regulating component in the present invention.

[0029] Figure 8 It is a schematic diagram of the structure of the oiling component in the present invention.

[0030] Fig. 9 It is a structural schematic diagram of the incoming material component in the present invention.

[0031] Fig.10 It is a partial enlarged schematic diagram of area A in the figure of the present invention.

[0032] Fig.11 It is a schematic diagram of the front and rear states of the inclined tooth inserting plate pushing the inclined plane cam to move in the present invention.

[0033] In the figure: 1, punching machine; 2, upper die; 3, lower die; 4, feeding system; 5, feeding assembly; 51, lower roller; 52, upper roller; 53, driving motor; 6, swing rod; 61, synchronous shaft; 62, bending plate; 7, adjustment assembly; 71, buffer; 711, mounting groove; 712, flexible pad; 72, flip shaft; 73, inclined cam; 731, extrusion section; 732, avoidance section; 74, flip Turning push plate; 75, flip push groove; 76, elastic member; 77, driving cylinder; 8, oiling assembly; 81, fixed sleeve; 82, oiling pipe; 83, valve body; 84, flow limiting boss; 9, fixed frame; 10, incoming material assembly; 101, arc support plate; 102, support roller; 103, limit support rod; 104, limit slide; 11, synchronous push plate; 12, bevel gear insert plate; 13, linear motor. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1, the present invention provides as follows Figures 1 to 11The stamping forming equipment of a hardware accessory shown in the figure comprises: a stamping machine 1, which is equipped with an upper die 2 and a lower die 3, and is used for stamping and producing sheet metal products. The upper die 2 and the lower die 3 are stamping dies adapted for the stamping machine 1. The stamping machine 1, the upper die 2 and the lower die 3 are all existing technologies and are not described in detail here; a feeding system 4 is used to intermittently convey the blank between the upper die 2 and the lower die 3, and cooperate with the stamping action of the stamping machine 1. The feeding system 4 is equipped with a distance sensor for monitoring the relative distance between the upper die 2 and the lower die 3, and then controlling the movement of the blank. The feeding system 4 includes a feeding assembly 5 for clamping and conveying the blank so that the blank enters between the upper die 2 and the lower die 3 to complete continuous production; the feeding system 4 is also provided with a swing rod 6 and an adjustment assembly 7, and the swing rod 6 can control the feeding assembly 5 to intermittently convey the blank; the adjustment assembly 7 includes a feeding assembly 5 for clamping and conveying the blank. A buffer portion 71 is included to prevent the feeding component 5 from causing indentations to the blank during intermittent feeding, so as to prevent the blank from being deformed due to the indentations and causing unqualified products; two adjusting components 7 are provided, and are symmetrically arranged. Any adjusting component 7 can drive the swing rod 6 to rotate, and the two adjusting components 7 can replace each other to avoid high temperature or damage caused by long-term work; there are two oiling components 8, which correspond to the adjusting components 7 respectively and can support the adjusting components 7 to add oil to the blank to avoid high temperature and jamming when the punching machine 1 punches the blank through the upper die 2 and the lower die 3, thereby improving the yield rate of the product, and controlling the oil flow rate through the adjusting component 7. The amount of oil required for plates of different widths and thicknesses is different. The amount of oil used is adjusted by the adjusting component 7 to reduce the loss of oil while ensuring normal operation.

[0036] It should be noted that the swing arm 6 is controlled to flip by the adjusting component 7, and at the same time the feeding component 5 relaxes the clamping of the blank, so that the feeding action is suspended. After the swing arm 6 is reset, the feeding component 5 clamps the blank again, and reduces the impact on the blank during the rapid clamping of the blank through the buffer part 71; the adjusting component 7 can control the initial position of the swing arm 6, so that the feeding component 5 is suitable for blanks of different thicknesses; during use, if any adjusting component 7 is damaged, another adjusting component 7 can continue to work, avoiding the problem of shutdown for maintenance when the adjusting component 7 is damaged due to continuous long-term work, thereby reducing the amount of waste generated due to maintenance; and when working for a long time continuously, the two adjusting components 7 can be made to work alternately, avoiding damage to the equipment due to continuous work; and when any adjusting component 7 is damaged, it can be taken over by another adjusting component 7 until the blank is used up, avoiding waste of blanks caused by shutdown; at the same time, the oiling component 8 on the side of the damaged adjusting component 7 works to continue adding oil to the blank.

[0037] Specifically, the two adjusting components 7 drive the swing rod 6 alternately to avoid equipment damage caused by long-term operation; the adjusting component 7 that does not drive the swing rod 6 controls the output flow of the corresponding oiling component 8 to reduce oil loss; and the oiling component 8 corresponding to the adjusting component 7 that drives the swing rod 6 is closed at the same time.

[0038] More specifically, the feeding system 4 also includes: a fixed frame 9, which is a hollow structure, one side of which is connected to the punching machine 1 by bolts, so that it can be installed on the side of punching machines 1 of different models to increase the scope of application. The fixed frame 9 is composed of multiple plate-like structures, which are connected to each other by bolts to facilitate disassembly and maintenance; an incoming material component 10, which is fixedly connected to the side of the fixed frame 9 away from the punching machine 1, and is used to support the blank to avoid plastic deformation caused by large-angle bending of the blank, resulting in waste of the blank. The incoming material component 10 limits the working of the blank corresponding to the upper mold 2 and the lower mold 3 area, to avoid unqualified products caused by the movement of the blank; a synchronous push plate 11, which is slidably connected to the middle of the fixed frame 9, and fixedly connected at both ends with symmetrically arranged bevel toothed plug plates 12, which are used to control the initial position of the swing rod 6 through the adjustment component 7, so as to achieve the purpose of being suitable for blanks of different thicknesses; a linear motor 13, which is fixedly connected to the middle of the fixed frame 9, and the output end is fixedly connected to the synchronous push plate 11. The linear motor 13 is a prior art and will not be described in detail here. During use, the linear motor 13 is electrically connected to the corresponding controller and power supply.

[0039] Specifically, each adjusting assembly 7 includes: a flip shaft 72, which is rotatably connected to the inner side of the fixed frame 9, and the other end of the flip shaft 72 is supported by the oiling assembly 8; a bevel cam 73, which is slidably sleeved on the outer side of the flip shaft 72 and is used to drive the swing rod 6 to flip, so as to realize intermittent conveying of the blank; a flip push plate 74, which is fixedly connected to the outer side of the flip shaft 72 and has a flip push groove 75 in the middle. When in use, the flip push plate 74 rotates the bevel cam 73 through the flip shaft 72, and at the same time, the outer side of the bevel cam 73 pushes the swing rod 6 to rotate The tilting push plate 74 and the bevel cam 73 are provided with an elastic member 76 for driving the bevel cam 73 to contact the swing rod 6. The elastic member 76 can be a spring or a reed or other elastic member, which can make the axial end face of the bevel cam 73 contact the swing rod 6. The other end of the bevel cam 73 contacts the corresponding bevel tooth insert plate 12. By adjusting the position of the bevel tooth insert plate 12, the bevel cam 73 is pushed to slide along the tilting shaft 72. In this process, the outer side of the bevel cam 73 squeezes the swing rod 6, so that the initial position of the swing rod 6 changes. Fig.11The change from (a) to (b); the driving cylinder 77, whose output end is placed in the flip push groove 75, is used to push the swing rod 6 to flip through the flip shaft 72 and the inclined cam 73. The driving cylinder 77 adopts an electric cylinder or a linear push rod that can accurately control the pushing distance. The driving cylinder 77 is a prior art and will not be described in detail here. During use, the driving cylinder 77 is connected to a corresponding controller.

[0040] It should be noted that the circumferential surface of the inclined cam 73 is divided into an extrusion section 731 and an avoidance section 732. During use, the driving cylinder 77 causes the inclined cam 73 to rotate in the forward direction through the flip push plate 74 and the flip shaft 72. At this time, the extrusion section 731 contacts the swing rod 6, causing the swing rod 6 to flip; when the driving cylinder 77 causes the inclined cam 73 to rotate in the reverse direction through the flip push plate 74 and the flip shaft 72, the avoidance section 732 does not contact the swing rod 6. At this time, the flow of the corresponding oiling component 8 is controlled by the flip shaft 72.

[0041] It should be pointed out that the flip shafts 72 of the left and right adjustment components 7 rotate in opposite directions. The adjustment component 7 on one side is used to control the rotation of the swing rod 6, while the adjustment component 7 on the other side is used to control the flow of the corresponding oiling component 8.

[0042] More specifically, the buffer portion 71 includes: a mounting groove 711, which is opened on the outer side of the inclined cam 73; a flexible pad 712, which is fixedly arranged in the corresponding mounting groove 711 and can contact the swing rod 6. The flexible pad 712 is made of an elastic and plastic material such as rubber or silicone. The end face of the flexible pad 712 protrudes from the end face of the inclined cam 73, which is used to reduce the impact of the feeding component 5 on the blank when clamping the blank.

[0043] It should be noted that the mounting groove 711 is provided at a position corresponding to the extrusion section 731. When in use, the extrusion section 731 pushes the swing rod 6 to rotate, so that the upper roller 52 is separated from the lower roller 51 and the clamping of the blank is relaxed. When the inclined cam 73 rotates in the opposite direction, the swing rod 6 is reset. After the upper roller 52 contacts the blank, the inclined cam 73 continues to rotate to the initial position, and the lower end of the swing rod 6 squeezes the flexible section to avoid indentations on the blank caused by rigid impact.

[0044] Specifically, the feeding assembly 5 includes: a lower roller 51, both ends of which are fixedly connected to the middle of the fixed frame 9 through bearings and bearing seats to ensure the smooth rotation of the lower roller 51; an upper roller 52, which rotates synchronously with the lower roller 51 and in opposite directions, and the upper roller 52 is rotatably connected to the end of the swing rod 6, and the upper roller 52 and the lower roller 51 are meshed through gears, and when the upper roller 52 moves upward, the gears remain meshed to ensure that the upper roller 52 and the lower roller 51 rotate at the same speed; a driving motor 53, the output end of which is connected to the lower roller 51 through a synchronous belt and a pulley for driving the upper roller 52 and the lower roller 51 to rotate, and the driving motor 53 is used When in use, the swing arm 6 flips over to separate the upper roller 52 from the lower roller 51, loosens the grip on the blank, and prevents the blank from sliding toward the upper die 2 and the lower die 3. When the initial angle of the swing arm 6 changes, the initial distance between the upper roller 52 and the lower roller 51 also changes synchronously, so as to adapt to blanks of different thicknesses.

[0045] It should be noted that when the relative distance between the upper roller 52 and the lower roller 51 changes, the deviation of the axis of the upper roller 52 and the lower roller 51 in the vertical direction is small. This deviation does not affect the upper roller 52 and the lower roller 51 to continue to convey the blank and will not cause the blank to bend.

[0046] More specifically, the swing lever 6 includes: a synchronous shaft 61, both ends of which are rotatably connected to the inner side of the fixed frame 9, and the synchronous shaft 61 has the same delay direction as the axis of the upper roller 52 and the lower roller 51; two bending plates 62 are provided, and are symmetrically arranged, the bending plates 62 are fixedly connected to the outer side of the synchronous shaft 61, and both ends of the upper roller 52 are rotatably connected to the corresponding bending plates 62, respectively, and the lower end of the bending plate 62 contacts the corresponding inclined cam 73, and the bending plate 62 is "L" shaped, and the middle part is in contact with the synchronous shaft. 61 is fixedly connected; a torsion spring is mounted on the outer side of the synchronization shaft 61, which is used to push the bending plate 62 to reset, so that the upper roller 52 can contact the blank and cooperate with the lower roller 51 to tighten the blank. Other components can also be used to ensure that the synchronization shaft 61 is always subject to the reset elastic force and the lower end of the bending plate 62 is in contact with the circumferential side wall of the inclined cam 73; the synchronization shaft 61 makes the left and right bending plates 62 swing at the same time, controls the upper roller 52 and the lower roller 51 to clamp / relax the blank, and achieves the effect of intermittent conveying of the blank.

[0047] Specifically, each oiling assembly 8 includes: a fixed sleeve 81, which is rotatably mounted on the end of the corresponding flip shaft 72 and supports the flip shaft 72. One side of the fixed sleeve 81 is fixedly connected to a bracket, and the bottom of the bracket is connected to the inner bottom of the fixed frame 9 by bolts; an upper oil pipe 82, which runs through the middle of the fixed sleeve 81, and the bottom is connected to a valve body 83 for controlling the conduction of oil. The valve body 83 is an electric control valve, which is electrically connected to the corresponding controller and power supply when in use. The input end of the valve body 83 is connected to an oil pipe, and oil is transported to the upper oil pipe 82 through an oil pump. The oil pipe The oil pump is a prior art and will not be described in detail here. It is not shown in the figure. The outlet of the upper oil pipe 82 is placed above the blank. The flow limiting boss 84 is fixedly connected to the end of the corresponding flip shaft 72, and controls the flow of the oil by squeezing the upper oil pipe 82. The flow limiting boss 84 squeezes the upper oil pipe 82 by the driving of the flip shaft 72 to control the flow of the oil in the upper oil pipe 82. When in use, the valve body 83 is turned on to allow the oil to enter the upper oil pipe 82, and is discharged through the outlet of the upper oil pipe 82, dripping on the top of the blank, and the oil is distributed on the outside of the blank through the squeezing of the upper roller 52 and the lower roller 51.

[0048] It should be pointed out that the regulating component 7 that squeezes the oil flow in the upper oil pipe 82 through the flow-limiting boss 84 does not push the swing rod 6 to rotate. By driving the cylinder 77 and the flip shaft 72, the corresponding inclined cam 73 is rotated, so that the avoidance section 732 of the inclined cam 73 approaches the bending plate 62, and the bottom of the bending plate 62 does not contact the avoidance section 732; at this time, the inclined cam 73 on the other side rotates to make the extrusion section 731 approach the bending plate 62, so that the swing rod 6 flips.

[0049] More specifically, the incoming material assembly 10 includes: an arc-shaped support plate 101, which is symmetrically arranged on one side of the fixed frame 9, and the arc-shaped support plate 101 is connected to the fixed frame 9 by bolts; a support roller 102, which is rotatably connected between the two support plates and is used to support the blank to enter the feeding assembly 5, and the blank is placed above the support roller 102 to prevent the blank from bending due to gravity, and to enable the blank to stably enter between the upper roller 52 and the lower roller 51; a limiting support rod 103, the number of which is at least two, and there is a gap between the limiting support rods 103, the limiting support rods 103 are fixedly connected between the two arc-shaped support plates 101, and the limiting support rods 10 3 are parallel to each other; a limit slide 104 is placed in the gap between the two limit support rods 103 and can be locked relative to the limit support rod 103. The limit slide 104 can be fixed to the upper end of the limit support rod 103 by means of a switch magnetic seat or bolt tightening to limit the left and right position of the blank; there are at least two limit slides 104, which are placed on both sides of the blank to limit the position of the blank when entering the feeding assembly 5. When in use, the position of the blank is controlled by adjusting the distance between the limit slides 104 on both sides and the arc support plate 101, so that the entry direction of the blank is perpendicular to the upper roller 52 and the lower roller 51.

[0050] In summary, when performing continuous automatic stamping of sheet metal, the feeding system 4 is installed on one side of the punching machine 1 by bolts, and the blank is placed at an appropriate height between the upper die 2 and the lower die 3, and then the blank is placed on the upper end of the support roller 102, and the position of the limit slide 104 is adjusted so that the blank corresponds to the working area of ​​the upper die 2 and the lower die 3; then the position of the synchronous push plate 11 is adjusted by the linear motor 13, so that the inclined surface of the helical tooth insert plate 12 squeezes the end of the inclined surface cam 73, and at the same time, the swing rod 6 drives the upper roller 52 to flip relative to the lower roller 51, and adjusts the relative distance between the upper roller 52 and the lower roller 51, so that the upper roller 52 and the lower roller 51 can clamp and convey the blank without causing greater pressure on the blank, thereby avoiding crushing of the blank surface.

[0051] Subsequently, the driving motor 53 is started to rotate the upper roller 52 and the lower roller 51 to convey the blank to between the upper die 2 and the lower die 3; when the upper die 2 and the lower die 3 are separated, the upper roller 52 and the lower roller 51 clamp the blank and convey it to the punching machine 1. After conveying the blank for a proper distance, the flip push plate 74 on one side rotates the inclined cam 73 through the flip shaft 72, and at the same time, the outer side of the inclined cam 73 pushes the swing rod 6 to rotate, so that the upper roller 52 flips relative to the lower roller 51, and the distance between the upper roller 52 and the lower roller 51 is increased. At this time, the blank is relaxed, and the upper die 2 slides downward and contacts the lower die 3 to punch the blank. Subsequently, the upper die 2 is separated from the lower die 3, and the push plate 74 is flipped and reset to reset the swing rod 6. When the upper roller 52 contacts the blank, the inclined cam 73 continues to rotate to the initial position, and the lower end of the swing rod 6 squeezes the flexible section to prevent the upper roller 52 from causing a rigid impact on the blank, causing an indentation on the surface of the blank. At the same time, the upper roller 52 and the lower roller 51 continue to push the blank to the side of the punching machine 1.

[0052] At the same time, when the flip push plate 74 on one side rotates the swing rod 6 through the flip shaft 72, the corresponding valve body 83 is closed; the flip push plate 74 on the other side causes the inclined cam 73 to rotate in the opposite direction. At this time, the flow limiting boss 84 is driven by the flip shaft 72 to squeeze the upper oil pipe 82, thereby controlling the flow of oil in the upper oil pipe 82. When the oil flow reaches a suitable speed, the inclined cam 73 stops rotating.

[0053] When the equipment works for a long time, the two adjustment components 7 can work alternately to avoid high temperature or damage caused by a single adjustment component 7 working for a long time; when any adjustment component 7 is damaged, the other adjustment component 7 can take over its work until the blank is used up, avoiding blank waste caused by midway shutdown.

[0054] Embodiment 2: The present invention also discloses a stamping process for hardware accessories, comprising the following steps: S1, loading, inserting the blank into the loading system 4, and adjusting the initial position of the swing rod 6 so that the feeding assembly 5 clamps the blank, so that the feeding assembly 5 clamps the blank without causing pressure damage to the surface of the blank; S2, feeding, when the upper die 2 and the lower die 3 are separated, the feeding assembly 5 pushes the blank to move a preset distance so that the blank reaches the working area of ​​the upper die 2 and the lower die 3; S3, suspend feeding. When the upper die 2 contacts the lower die 3, the blank is punched once. Any adjusting component 7 controls the swing rod 6 to flip, so that the feeding component 5 releases the blank, and the feeding action is suspended. S4, continue feeding, when the upper die 2 and the lower die 3 are separated, that is, one stamping is completed, the swing rod 6 is reset, so that the feeding assembly 5 clamps the blank and avoids hard impact on the blank, and then the feeding assembly 5 continues to push the blank to the upper die 2 and the lower die 3 to move a preset distance, so that the semi-finished product after one stamping is completed enters the next stamping position; S5, cyclic stamping, cyclically executing S3 and S4 to achieve the purpose of continuous stamping, manufacturing products and discharging them from the working area of ​​the upper die 2 and the lower die 3; S6, oiling. During the execution of S2, S3 and S4, the adjusting component 7 that does not drive the swing rod 6 to flip controls the corresponding oiling component 8 to add oil to the surface of the blank to avoid high temperature of the upper die 2 and the lower die 3 during the stamping of the blank, and to avoid jamming and damage to the upper die 2 / lower die 3 during the stamping process; S7, alternately, set a delay, and after the delay is completed, swap the functions of the two regulating components 7 to avoid failure of a single regulating component 7.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stamping and forming equipment for hardware accessories, characterized in that: include: A stamping machine, which is equipped with an upper die and a lower die, and is used to stamp and produce sheet metal products; A feeding system is used to intermittently convey the blank between the upper die and the lower die and cooperate with the punching action of the punching machine. The feeding system includes a feeding assembly for clamping and conveying the blank. The feeding system is also provided with a swing rod and an adjustment assembly. The swing rod can control the feeding assembly to intermittently convey the blank. The swing rod is turned over by the adjusting component, and the feeding component releases the clamping of the blank, so that the feeding action is suspended; the adjusting component can control the initial position of the swing rod, so that the feeding component is suitable for blanks of different thicknesses; The adjusting assembly includes a buffer portion for preventing the feeding assembly from causing indentations on the blank during intermittent feeding; The adjusting components are provided with two and are symmetrically arranged, and any one of the adjusting components can drive the swing rod to rotate, and the two adjusting components can replace each other; The oiling components are provided with two and correspond to the adjusting components respectively, and can support the adjusting components, and are used to add oil to the blank and control the oil flow through the adjusting components.

2. The stamping and forming equipment for hardware accessories according to claim 1, characterized in that: The two adjusting components drive the swing rod alternately; The regulating assembly that does not drive the swing lever controls the output flow of the corresponding oiling assembly; The oiling assembly corresponding to the adjusting assembly that drives the swing rod is closed.

3. The stamping and forming equipment for hardware accessories according to claim 1, characterized in that: The feeding system also includes: A fixed frame, which is a hollow structure, one side of which is connected to the punching machine by bolts, so that it can be installed on the side of different types of punching machines; The incoming material assembly is fixedly connected to the side of the fixed frame away from the punching machine, and is used to support the blank and limit the working area of ​​the blank corresponding to the upper die and the lower die; A synchronous push plate, which is slidably connected to the middle part of the fixed frame and fixedly connected to symmetrically arranged helical toothed inserting plates at both ends, and is used to control the initial position of the swing rod through the adjustment assembly; The linear motor is fixedly connected to the middle part of the fixed frame, and the output end is fixedly connected to the synchronous push plate.

4. The stamping and forming equipment for hardware accessories according to claim 3, characterized in that: Each of the adjustment components comprises: A turning shaft, which is rotatably connected to the inner side of the fixed frame; An inclined cam is slidably mounted on the outer side of the turning shaft and is used to drive the swing rod to turn over, thereby realizing intermittent conveying of the blank; A flip push plate, which is fixedly connected to the outside of the flip shaft and has a flip push groove in the middle, and an elastic member is provided between the flip push plate and the inclined cam for driving the inclined cam to contact the swing rod; The other end of the inclined cam contacts the corresponding inclined tooth insert plate; The driving cylinder has an output end placed in the flip push groove and is used to push the swing rod to flip through the flip shaft and the inclined cam.

5. The stamping and forming equipment for hardware accessories according to claim 4, characterized in that: The buffer portion comprises: A mounting groove, which is provided on the outer side of the inclined cam; A flexible pad is fixedly arranged in the corresponding installation groove and can contact the swing rod. The end surface of the flexible pad protrudes from the end surface of the inclined cam, and is used to reduce the impact of the feeding component on the blank when clamping the blank.

6. The stamping and forming equipment for hardware accessories according to claim 4, characterized in that: The feeding assembly comprises: A lower roller, both ends of which are rotatably connected to the middle of the fixed frame; An upper roller, which rotates synchronously with the lower roller and in opposite directions, and the upper roller is rotatably connected to the end of the swing rod; A driving motor, the output end of which is connected to the lower roller via a synchronous belt and a pulley, and is used to drive the upper roller and the lower roller to rotate; The blank is placed between the upper roller and the lower roller, and the blank is conveyed into between the upper die and the lower die of the punching machine through the relative rotation of the upper roller and the lower roller.

7. The stamping and forming equipment for hardware accessories according to claim 6, characterized in that: The swing lever comprises: A synchronization shaft, both ends of which are rotatably connected to the inner side of the fixed frame; Bending plates, which are provided with two and symmetrically arranged, the bending plates are fixedly connected to the outside of the synchronous shaft, the two ends of the upper roller are respectively rotatably connected to the corresponding bending plates, and the lower ends of the bending plates are in contact with the corresponding inclined cams; The synchronous shaft makes the bending plates on the left and right sides swing simultaneously, controls the upper roller and the lower roller to clamp / relax the blank, and realizes the effect of intermittently conveying the blank.

8. The stamping and forming equipment for hardware accessories according to claim 4, characterized in that: Each of the oiling components comprises: Fixed sleeves are rotatably sleeved on the corresponding ends of the flip shafts and support the flip shafts; An upper oil pipe, which runs through the middle of the fixed sleeve and is connected to a valve body for controlling oil conduction at the bottom, and the outlet of the upper oil pipe is placed above the blank; The flow-limiting boss is fixedly connected to the corresponding end of the flip shaft and controls the flow of the oil by squeezing the upper oil pipe.

9. The stamping and forming equipment for hardware accessories according to claim 3, characterized in that: The incoming material assembly comprises: An arc-shaped support plate, which is symmetrically arranged on one side of the fixed frame; A support roller, which is rotatably connected between the two support plates and is used to support the blank to enter the feeding assembly; There are at least two position-limiting support rods with a gap between them, and the position-limiting support rods are fixedly connected between the two arc-shaped support plates; A limit slide, which is placed in the gap between the two limit support rods and can be locked relative to the limit support rods; There are at least two limit slides, which are placed on both sides of the blank and are used to limit the position of the blank when it enters the feeding assembly.

10. A stamping process for hardware accessories, applied to the stamping equipment for hardware accessories according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, loading, insert the blank into the loading system, and adjust the initial position of the swing rod so that the feeding assembly clamps the blank; S2, feeding, when the upper die and the lower die are separated, the feeding assembly pushes the blank to move a preset distance; S3, pausing feeding. When the upper die contacts the lower die, any of the adjusting components controls the swing rod to flip, so that the feeding component releases the blank, and the feeding action is paused; S4, continue feeding, when the upper die and the lower die are separated, the swing rod is reset, so that the feeding assembly clamps the blank and avoids causing hard impact on the blank, and then the feeding assembly continues to push the blank to move the preset distance toward the upper die and the lower die; S5, cycle stamping, cycle execution of S3 and S4; S6, oiling. During the execution of S2, S3 and S4, the regulating component that does not drive the swing rod to flip controls the corresponding oiling component to add oil to the surface of the blank; S7, alternately, set a delay, and after the delay is completed, swap the functions of the two adjustment components.

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