Processing technology of C-shaped fixture for feeder card

Abstract

The application relates to a processing technology of a C-shaped fixture for a feeder card, which comprises the following steps: S1, workpiece cutting and punching; S2, workpiece polishing and deburring: a pushing mechanism on a cutting machine discharges qualified plate pieces into a first vibrating disc, the first vibrating disc sequentially conveys the plate pieces to a feeding table to be stacked, a counter is used to count the number of the stacked plate pieces on the feeding table, and the feeding table moves the stacked plate pieces into a dry grinder at one time; and S3, workpiece bending and shaping: a second vibrating disc sequentially conveys the polished plate pieces into a feeding box of a bending machine; the application uses two vibrating discs to transfer the workpieces obtained in the cutting and punching and polishing and deburring processes, liberates human resources, controls the feeding and discharging speeds between the stations, realizes automatic workpiece transfer between the processes, realizes seamless connection between the processes, and improves the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of C-shaped clamp processing technology, and in particular to a processing technology for a C-shaped clamp for a feeder clamp. Background Technology

[0002] In the field of communications, feeder clamps, as a type of fixing device, are suitable for communication base stations, repeaters, indoor coverage systems, wireless paging, and microwave communication systems. They serve to fix transmission cables in towers, cable trays, indoor and outdoor locations, as well as in subways and tunnels, and can be used in various high and low temperature ranges. Feeder clamps generally consist of a C-shaped clamp structure that connects to the object, and a line clamp structure installed on the C-shaped clamp via screws. In the processing of C-shaped clamps, the sheet metal is first sheared and punched to obtain a sheet. After the burrs on the sheet are ground off, a bending machine is used to bend the sheet into shape to obtain the C-shaped clamp. This processing involves multiple manual transfers of the workpiece, which not only wastes a lot of manpower but also results in interruptions between processes and low production efficiency.

[0003] Therefore, this invention proposes a processing technology for a C-shaped clamp for feeder cards to solve the above problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a processing technology for a C-shaped clamp for feeder cards, which frees up manpower, realizes automatic transfer of workpieces between processes, enables seamless connection between processes, and improves production efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: a processing technology for a C-shaped clamp for a feeder card, the innovation of which lies in that: the processing technology is completed using a dedicated processing system, the dedicated processing system including a controller and sequentially arranged components such as a feeding tray, a flattening mechanism, a buffer mechanism, a transition mechanism, a pressing mechanism, a cutting machine, a first vibrating plate, a feeding table, a dry grinding machine, a second vibrating plate, and a bending machine, the processing technology including the following steps:

[0006] S1. Workpiece Cutting and Punching: After the sheet metal roll is unwound from the feeding tray, it is sequentially flattened by the flattening mechanism, flattened by the transition mechanism, and flattened and positioned by the pressing mechanism before being conveyed forward to the cutting machine. During the conveying process, the feeding speed of the feeding tray is adjusted by the buffer mechanism. After the cutting machine recognizes that the sheet metal has been conveyed to the correct position, the upper cutter head of the cutting machine moves to punch and cut the sheet metal at the same time, obtaining a sheet metal sheet with three through holes. The pushing mechanism on the cutting machine uses a detector to detect the quality of the sheet metal sheet, and according to the quality detection results, the qualified sheet metal sheet and the unqualified sheet metal sheet are cut out separately. The feeding tray releases material once for each sheet metal sheet cut out.

[0007] S2. Deburring the workpiece: The pushing mechanism on the cutting machine feeds qualified sheet metal into the first vibrating plate. The first vibrating plate conveys the sheet metal one by one to the feeding table for stacking. The counter counts the number of sheet metal stacked on the feeding table. The feeding table moves the stacked sheet metal into the dry grinder in one go. The dry grinder starts to rotate forward to grind the sheet metal inside. When the number of sheet metal stacked by the counter reaches the preset value, the dry grinder reverses and feeds the ground sheet metal into the second vibrating plate.

[0008] S3. Workpiece bending and shaping: The second vibratory feeder transports the polished sheet metal pieces one by one into the feeding box of the bending machine. The bending machine's handle pushes the sheet metal pieces in the feeding box to the lower die. After the bending machine recognizes that the sheet metal pieces have moved into place, the upper die of the bending machine presses the sheet metal pieces into the groove of the lower die for bending. The handle automatically returns to its original position. After bending and forming, a C-shaped clamp is obtained. The upper die resets, the C-shaped clamp automatically moves out of the groove of the lower die, and the handle automatically pushes the sheet metal pieces to the lower die and pushes the C-shaped clamp at the lower die to the unloading plate to complete the unloading. Each time the handle returns to its original position, the second vibratory feeder transports one sheet metal piece into the feeding box.

[0009] Furthermore, the cutting head of the cutting machine and the upper die of the bending machine have the same operating frequency and timing.

[0010] Furthermore, the preset value is set according to the number of C-shaped clamps formed within the grinding time, and the grinding effect is ensured by adjusting the forward rotation speed of the dry grinder.

[0011] Furthermore, the buffer mechanism includes a bracket, a proximity switch, three guard plates, and an arc-shaped thin plate capable of elastic deformation;

[0012] The bracket has three mounting seats at its upper end, which are respectively located in the middle and on both sides of the bracket. Three protective plates correspond one-to-one with the mounting seats and are installed below the corresponding mounting seats via movable rods. Each mounting seat includes a column and a mounting plate. The column is vertically installed on the top surface of the bracket, and the mounting plate is installed on the top of the column. The mounting plate of the mounting seat located in the middle of the bracket is horizontally set and has a first through hole. The mounting plates of the mounting seats located on both sides of the bracket are inclined from top to bottom away from the middle of the bracket and have oblong holes. The movable rod moves through the first through hole or oblong hole of the corresponding mounting plate. The protective plate is installed at the lower end of the movable rod. The upper end of the movable rod is threaded with a limit nut. A return spring is sleeved on the movable rod. One end of the return spring abuts against the upper end of the protective plate, and the other end abuts against the bottom end of the mounting plate. An arc-shaped thin plate is set below the three protective plates and connects the three protective plates to form a whole. A proximity switch is installed on the upper end of the middle mounting seat and matches the protective plate corresponding to the middle mounting seat. The proximity switch controls the feeding speed of the feeding tray through a controller.

[0013] Furthermore, the bending machine includes an operating table, a lower die, an upper die, a handle, a feeding box, a feeding plate, and a sliding plate;

[0014] The lower die is installed on the top surface of the operating table. The upper die is positioned directly above the lower die via a lifting plate. The lifting plate is driven to move up and down by a power drive component, which in turn moves the upper die up and down. A groove is opened on the top surface of the lower die for the upper die to enter. A lifting block is movably installed in the groove. A first return spring is provided below the lifting block. The lifting block moves upward under the force of the first return spring to push the formed C-shaped fixture out of the groove.

[0015] The feeding box and the unloading plate are respectively arranged on both sides of the lower die. The unloading plate is inclined from top to bottom towards the side away from the lower die. The feeding box is located above the lower die. The feeding box has a storage cavity for longitudinally stacking sheet metal. The bottom of the feeding box has a discharge port. The handle is horizontally movable between the feeding box and the lower die through a guide mechanism and is connected to the operating table through a second return spring. Under the pulling force of the second return spring, the handle pushes the sheet metal at the discharge port of the feeding box to the lower die. At the same time, the sheet metal pushes the formed C-shaped clamp to move into the unloading plate for unloading.

[0016] The slide plate is mounted on the lifting plate and moves synchronously with the lifting plate. The end face of the slide plate near the handle is inclined and tilts from top to bottom away from the handle. When the slide plate moves downward with the lifting plate, the inclined surface of the slide plate pushes the handle, causing the handle to overcome the tension of the second return spring and move to the side of the feeding box away from the lower die.

[0017] Furthermore, the handle includes an integrally formed push plate portion and a U-shaped portion, with the push plate portion located in the middle of the U-shaped portion and cooperating with the U-shaped portion to form a mountain-shaped structure;

[0018] The guiding mechanism includes a guide plate assembly and a pair of parallel guide rail assemblies. The guide plate assembly includes a lower guide plate and an upper guide plate. The lower guide plate is mounted on the operating table, and the upper guide plate is mounted on the top surface of the lower guide plate. The upper guide plate has a feeding groove that cooperates with the lower guide plate to allow the push plate part of the handle to enter and move. The push plate part of the handle is located in the feeding groove. The feeding box is mounted on the top surface of the upper guide plate. The upper guide plate at the outlet of the feeding box has a connecting groove for the sheet metal at the outlet of the feeding box to pass through and enter the feeding groove. The guide rail assemblies are located on both sides of the lower die. The guide rail assembly includes a guide rail and a slider. The guide rail is mounted on the top surface of the operating table, and the slider is slidably mounted on the guide rail. The two sides of the U-shaped part of the handle are respectively connected to the sliders of the two guide rail assemblies.

[0019] Furthermore, the slide plate has two slide plates, each corresponding to one of the two guide rail assemblies. Each guide rail assembly has a roller rotatably mounted on the side of the slider away from the handle, and the inclined surface of the slide plate fits against the arc-shaped surface of the roller.

[0020] Furthermore, an adjusting bolt is provided below the lifting block. The central axis of the adjusting bolt is vertically set, and the bottom end of the adjusting bolt has a limiting cap. A groove is opened on the bottom surface of the operating table for the limiting cap to move up and down. The limiting cap is movably set in the groove. A threaded hole is opened on the bottom surface of the lifting block. The top end of the adjusting bolt passes through the operating table and is threaded into the threaded hole. The first return spring is set in the groove of the lower die and sleeved on the outside of the adjusting bolt. One end of the first return spring abuts against the bottom surface of the lifting block, and the other end abuts against the bottom surface of the groove.

[0021] Furthermore, each side of the molding groove on the top surface of the lower die is provided with a lateral limiting block, and a first channel is formed between the two lateral limiting blocks for the sheet metal to enter and the formed C-shaped fixture to move out. Each lateral limiting block is provided with an upper limiting block at its top. The upper limiting block is located inside the lateral limiting block and cooperates with the lateral limiting block to form an L-shaped structure. A second channel for the upper die to move is left between the upper limiting blocks at the top of the two lateral limiting blocks. Two limiting pins are provided on the side of the lateral limiting block near the blanking plate. The two limiting pins are respectively located on both sides of the blanking plate. A third channel for the formed C-shaped fixture to pass through is left between the two limiting pins.

[0022] Furthermore, a positioning pin is installed at the bottom of the upper mold that matches the through hole in the middle of the sheet metal.

[0023] The advantages of this invention are:

[0024] The processing technology of this invention utilizes two vibratory feeders to transfer the workpieces obtained from the cutting, punching, grinding, and deburring processes, respectively, thus freeing up manpower. Through the cooperation of the feeding tray, flattening mechanism, buffer mechanism, transition mechanism, flattening mechanism, cutting machine, first vibratory feeder, feeding table, dry grinder, second vibratory feeder, and bending machine, and by controlling the loading and unloading speeds between each station, automatic transfer of workpieces between processes is achieved, enabling seamless connection between processes and improving production efficiency.

[0025] In this invention, the cutting head of the cutting machine and the upper die of the bending machine have the same operating frequency and timing, which is beneficial for the connection between various processes and ensures the material balance within the processing system.

[0026] In this invention, the preset value is set according to the number of C-shaped clamps formed within the grinding time. On the one hand, this ensures that the number of sheet metal pieces ground by the dry grinder at one time meets the requirements of the sheet metal pieces in the subsequent bending and forming process. On the other hand, it helps to maintain the balance of the number of sheet metal pieces in the second vibrating plate and avoids the sheet metal pieces in the second vibrating plate from accumulating more and more.

[0027] The buffer mechanism of this invention uses a proximity switch to sense the position of the lifting guard plate to detect the material in real time. After the proximity switch transmits the signal to the controller, the controller controls the feeding speed of the feeding tray. The buffer mechanism uses an arc-shaped thin plate that can undergo elastic deformation to connect the three guard plates into a whole. When the material moves and arches upward, the arc-shaped thin plate undergoes elastic deformation, thereby fitting the material better, making the material more uniformly stressed, and improving the feeding accuracy.

[0028] The bending machine of the present invention has only one power drive component. The power drive component moves up and down once. Through the cooperation of the lower die, upper die, handle, feeding box, unloading plate and slide plate, it can achieve seamless connection of feeding, stamping and bending and unloading. The operation process is simple, and the structure is compact and occupies little space.

[0029] The push plate portion and U-shaped portion of the handle of the present invention are respectively limited by the guide rail assembly and the guide plate assembly, which improves the stability of the handle movement and the feeding accuracy.

[0030] This invention installs rollers on a slider, with the inclined surface of the slide plate fitting against the curved surface of the rollers. The slide plate pushes the slider to move via the rollers, and the rollers and slide plate make rolling contact, which effectively reduces frictional resistance, makes it easier to move the slider, and avoids wear on the slider and slide plate.

[0031] This invention adjusts the lifting height of the lifting block by setting an adjusting bolt below the lifting block and rotating the adjusting bolt to change the distance between the bottom limit cap and the lifting block, thereby avoiding the forming C-shaped clamp being too high or too low and affecting normal material feeding.

[0032] This invention improves bending accuracy by setting two lateral limiting blocks on both sides of the groove and an upper limiting block on the top of each lateral limiting block, thereby limiting the sides and top of the sheet metal. The invention also uses two limiting pins to limit the displacement of the sheet metal pushed by the handle, so that the sheet metal moves to the top of the groove without affecting the normal feeding of the formed C-shaped fixture.

[0033] This invention improves bending accuracy by installing a positioning pin at the bottom of the upper die. When the upper die moves down to press, the positioning pin enters the through hole in the middle of the sheet metal to position the sheet metal. Attached Figure Description

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] Figure 1 This is a flowchart of the processing technology of the present invention.

[0036] Figure 2 This is a schematic diagram of the apparatus involved in the processing technology of the C-shaped clamp for the feeder card in this invention.

[0037] Figure 3 This is a schematic diagram of the buffer mechanism of the present invention.

[0038] Figure 4 This is a partial cross-sectional view of point A in the present invention.

[0039] Figure 5 This is a front view of the bending machine of the present invention.

[0040] Figure 6 This is a side view of the bending machine of the present invention.

[0041] Figure 7 This is a top view of the operating table of the bending machine of the present invention.

[0042] Figure 8 This is a schematic diagram of the guiding mechanism of the bending machine of the present invention.

[0043] Figure 9 This is a schematic diagram showing the connection between the slide plate and the slider of the bending machine of the present invention. Implementation

[0044] The following embodiments are intended to enable those skilled in the art to more fully understand the present invention, but do not limit the invention to the scope of the embodiments described.

[0045] like Figure 1-2 As shown, the present invention provides a processing technology for a C-shaped clamp for a feeder card, which is completed using a dedicated processing system. The dedicated processing system includes a controller and a feeding tray 1, a flattening mechanism 2, a buffer mechanism 3, a transition mechanism 4, a flattening mechanism 5, a cutting machine 6, a first vibrating plate 7, a feeding table 8, a dry grinding machine 9, a second vibrating plate 10, and a bending machine 11 arranged in sequence. A first lifting conveyor belt is provided between the first vibrating plate 7 and the feeding table 8, and a second lifting conveyor belt is provided between the dry grinding machine 9 and the second vibrating plate 10.

[0046] The processing technology includes the following steps:

[0047] S1. Workpiece cutting and punching: After the sheet metal roll is unwound from the feeding tray 1, it is flattened once by the flattening mechanism 2, flattened twice by the transition mechanism 4, and flattened and positioned by the pressing mechanism 5. Then, it is conveyed forward to the cutting machine 6. During the conveying process, the feeding speed of the feeding tray 1 is adjusted by the buffer mechanism 3. After the cutting machine 6 detects that the sheet metal has been conveyed to the correct position, the upper cutter head of the cutting machine 6 moves to punch and cut the sheet metal at the same time, obtaining a sheet metal sheet with three through holes. The pushing mechanism on the cutting machine 6 uses a detector to detect the quality of the sheet metal sheet. Based on the quality detection results, the qualified sheet metal sheet and the unqualified sheet metal sheet are cut out separately. The feeding tray 1 feeds out the sheet metal once every time the sheet metal sheet is cut out.

[0048] S2. Deburring of workpieces: The pushing mechanism on the cutting machine 6 feeds qualified sheet metal into the first vibrating plate 7. The first vibrating plate 7 conveys the sheet metal one by one to the first lifting conveyor belt, which then conveys the sheet metal to the feeding table 8 for stacking. A counter is used to count the number of sheet metal stacks on the feeding table 8. The feeding table 8 moves the stacked sheet metal to the dry grinder 9 in one go. The dry grinder 9 starts rotating forward to grind the sheet metal inside. When the number of sheet metal stacks counted by the counter reaches the preset value, the dry grinder 9 reverses and feeds the ground sheet metal onto the second lifting conveyor belt. The second lifting conveyor belt conveys the ground sheet metal to the second vibrating plate 10. The preset value is set according to the number of C-shaped clamps formed within the grinding time. The grinding effect is ensured by adjusting the forward rotation speed of the dry grinder.

[0049] S3. Workpiece bending and shaping: The second vibratory feeder 10 conveys the polished sheet metal pieces one by one into the feeding box of the bending machine 11. The handle of the bending machine 11 pushes the sheet metal pieces in the feeding box to the lower die. After the bending machine 11 recognizes that the sheet metal pieces have moved into place, the upper die of the bending machine 11 presses the sheet metal pieces into the groove of the lower die for bending. The handle automatically returns to its original position. The operating frequency and timing of the upper die of the bending machine and the upper cutter head of the cutting machine are the same. After bending and forming, the upper die is reset and the C-shaped clamp is automatically moved out of the groove of the lower die. The handle automatically pushes the sheet metal pieces to the lower die and pushes the C-shaped clamp at the lower die to the unloading plate to complete the unloading. Each time the handle returns to its original position, the second vibratory feeder 10 conveys one sheet metal piece into the feeding box.

[0050] The flattening mechanism 2 includes a frame and flattening rollers located inside the frame. There are several flattening rollers, which extend along the conveying direction of the sheet material and are symmetrically distributed in two layers, upper and lower. Adjusting wheels for adjusting the tension of the upper and lower flattening rollers are installed on the frame.

[0051] The transition mechanism 4 includes transition rollers and a fixed base. The transition rollers are distributed in two layers, upper and lower, and both transition rollers are fixed on the fixed base.

[0052] The flattening mechanism 5 includes a flattening roller, a flattening platform, and a flattening fixing seat. The flattening roller and the flattening platform are both installed on the flattening fixing seat. The flattening platform and the cutting platform of the cutting machine are located on the same horizontal plane. The flattening roller is located above the flattening platform, and a gap is left between the flattening roller and the flattening platform to allow the plate to pass through.

[0053] The pushing mechanism on the cutting machine 6 includes a drive cylinder, a push plate, a detector, and a material distribution plate with dual feeding channels. The drive cylinder is installed on the side of the cutting machine, and a push plate is installed on the top of the drive cylinder. The detector is installed at the discharge port of the cutting machine, and the detector controls the drive cylinder through a controller. The cutting machine is equipped with a first detector for detecting whether the sheet material has moved into place.

[0054] like Figure 3-4 As shown, the buffer mechanism includes a support 31, three guard plates 34, and an arc-shaped thin plate 38 capable of elastic deformation.

[0055] The bracket 31 is a square frame structure assembled from several horizontal and vertical bars. The bracket 31 has a plate inlet and a plate outlet on both sides. The bracket 31 has three mounting seats at the top, which are respectively located in the middle and on both sides of the bracket 31. Three guard plates 34 correspond to the mounting seats one by one and are installed below the corresponding mounting seats through movable rods 35. The mounting seat includes a column 32 and a mounting plate 33. The column 32 is installed vertically on the top surface of the bracket 31, and the mounting plate 33 is installed on the top of the column 32. The mounting plate 33 of the mounting seat located in the middle of the bracket 31 is horizontally set and has a first through hole. The mounting plates of the mounting seats located on both sides of the bracket 31 are inclined from top to bottom away from the middle of the bracket 31 and have waist-shaped holes. The movable rods 35 are movably inserted into the first through hole or waist-shaped hole of the corresponding mounting plate 33. The guard plates 34 are installed at the lower end of the movable rods 35 and are perpendicular to the central axis of the movable rods 35. The upper end of the movable rods 35 is threaded with limit nuts 36. Each movable rod 35 is fitted with a return spring 37, one end of which abuts against the upper end of the guard plate 34, and the other end abuts against the bottom end of the mounting plate 33. A proximity switch is installed on the upper end of the middle mounting base and matches the guard plate corresponding to the middle mounting base. The proximity switch controls the feeding speed of the feeding tray 1 through the controller.

[0056] An arc-shaped thin plate 38 is positioned below three protective plates 34, connecting the three protective plates 34 into a single unit. For easy disassembly and replacement, the arc-shaped thin plate 38 is detachably connected to the three protective plates 34. Each end of the arc-shaped thin plate 38 is detachably connected to two protective plates located on either side of the bracket 31 via four bolt and nut assemblies 39. The four bolt and nut assemblies 39 are arranged in a U-shape. The arc-shaped thin plate 38 and the protective plates on both sides have second through holes through which the bolts of each bolt and nut assembly 39 pass. After the bolts of the bolt and nut assembly 39 pass through the second through holes from bottom to top, they engage with the bolt and nut assembly. The nut threaded connection of 39 fixes the end of the arc-shaped thin plate to the two side guard plates, meeting the necessary fixing strength requirements of the arc-shaped thin plate. The middle part of the arc-shaped thin plate 38 is detachably connected to the guard plate 34 located in the middle of the bracket 31 by two iron wires 310. The arc-shaped thin plate 38 and the guard plate 34 have two second through holes for the iron wires 310 to pass through respectively. The second through holes are opened on both sides in the width direction of the arc-shaped thin plate 38. After the iron wires 310 pass through the corresponding second through holes, they bend on both sides to form a closed loop structure to connect the arc-shaped thin plate 38 and the guard plate 34, and then wrap around each other below the arc-shaped thin plate 38 to form a plate limiting part. The connection between the middle part of the arc-shaped thin plate 38 and the middle guard plate 34 by iron wires 310 can, on the one hand, ensure the good arc surface of the arc-shaped thin plate 8 to the maximum extent, and on the other hand, the plate limiting part formed by the winding of iron wires 10 can limit the movement trajectory of the plate 311, ensuring that the plate 311 is always in contact with the arc-shaped thin plate 38.

[0057] like Figure 4-9 As shown, the bending machine includes an operating table 111, a lower die 112, an upper die 113, a handle 114, a feeding box 115, a blanking plate 116, and a sliding plate 117.

[0058] The lower die 112 is mounted on the top surface of the operating table 111. The upper die 113 is positioned directly above the lower die 112 via a lifting plate 118. A column is vertically mounted on the operating table 111. The lifting plate 118 is movably mounted on the column, and the upper die 113 is mounted on the bottom surface of the lifting plate 118. The lifting plate 118 is driven to move up and down by a power drive component, which in turn moves the upper die 113 up and down. The power drive component is a hydraulic cylinder mounted on the column, and its telescopic end is connected to the lifting plate 118. To improve the stability of the lifting plate 118's movement, guide posts 119 and guide sleeves 1110 are provided between the lifting plate 118 and the lower die 112. The guide posts 119 are vertically mounted on the lower die 112, and the guide sleeves 1110 are mounted on the lifting plate 118. The guide posts 119 are movably positioned within the guide sleeves 1110. There are two sets of guide posts 119 and guide sleeves 1110, respectively located on both sides of the lifting plate.

[0059] The lower die 112 has a groove on its top surface for the upper die 113 to enter. The connection between the two side walls of the groove and the top surface of the lower die 112 is an arc-shaped chamfer. Rolling elements 1113 are embedded in the arc-shaped chamfer of the lower die 112. This allows the bent part of the workpiece to roll and rub against the rolling elements when the sheet metal is stamped into a C-shape by the upper die, making it less likely for burrs to form on the workpiece surface. This results in a higher surface quality of the formed fixture and reduces wear on the lower die. A positioning pin 1115 is installed at the bottom of the upper die 113. A through hole for the positioning pin 1115 to enter is opened in the middle of the sheet metal of the C-shaped fixture. When the upper die 113 moves down to bend the sheet metal, the positioning pin 1115 enters the through hole to position the sheet metal and improve bending accuracy. A lifting block 1111 is movably installed in the groove. A first return spring 1112 is provided below the lifting block 1111. When the upper die presses down to deform the sheet metal, the workpiece presses the lifting block 1111 and moves downward. After the workpiece is bent and formed, the upper die moves upward, and the lifting block 1111 moves upward under the elastic force of the first return spring 1112, which automatically ejects the formed C-shaped fixture from the groove.

[0060] To better control the lifting height of the lifting block 1111, an adjusting bolt 1114 is provided below the lifting block 1111. The central axis of the adjusting bolt 1114 is vertically set, and the bottom end of the adjusting bolt 1114 has a limit cap. A groove is opened on the bottom surface of the operating platform 111 for the limit cap to move up and down. The limit cap is movably set in the groove. A threaded hole is opened on the bottom surface of the lifting block 1111, and the top end of the adjusting bolt 1114 passes through the operating platform 111 and is threaded into the threaded hole. The first return spring 1112 is set in the groove of the lower die 112 and sleeved on the outside of the adjusting bolt 1114. One end of the first return spring 1112 abuts against the bottom surface of the lifting block 1111, and the other end abuts against the bottom surface of the groove. The operator can adjust the lifting height of the lifting block 1111 by rotating the adjusting bolt 1114 to change the distance between the limiting cap of the adjusting bolt 1114 and the lifting block 1111, so as to avoid the formed C-shaped fixture being too high or too low and affecting the normal material feeding.

[0061] The feeding box 115 and the unloading plate 116 are respectively arranged on both sides of the groove of the lower die 112. The unloading plate 116 is inclined from top to bottom away from the groove of the lower die 112. The feeding box 115 is located above the lower die 112. The feeding box 115 has a storage cavity for longitudinally stacking sheet metal. The top of the feeding box 115 has a feed inlet and the bottom of the feeding box 115 has a discharge outlet. The handle 114 is horizontally movable between the feeding box 115 and the lower die 112 through a guide mechanism and is connected to the operating table 111 through the second return spring 1116. The handle 114 includes an integrally formed push plate portion and a U-shaped portion. The push plate portion is located in the middle of the U-shaped portion and cooperates with the U-shaped portion to form a mountain-shaped structure. The guiding mechanism includes a guide plate assembly and a pair of parallel guide rail assemblies. The guide plate assembly includes a lower guide plate 1117 and an upper guide plate 1118. The lower guide plate 1117 is installed on the top surface of the operating table 111, and the upper guide plate 1118 is installed on the top surface of the lower guide plate 1117. The upper guide plate 1118 is fitted with the lower guide plate 1117 and has a feeding groove for the push plate portion of the handle 114 to enter and move. The push plate portion of the handle 114 is located in the feeding groove. Inside the material trough, the feeding box 115 is mounted on the top surface of the upper guide plate 1118. The upper guide plate 1118 at the outlet of the feeding box 115 has a connecting groove 1119 for the sheet metal from the outlet of the feeding box 115 to pass through and enter the feeding trough. Guide rail assemblies are located on both sides of the lower die 112. Each guide rail assembly includes a guide rail 1120 and a slider 1121. The guide rail 1120 is mounted on the top surface of the operating table 111, and the slider 1121 is slidably mounted on the guide rail 1120. The U-shaped portion of the handle 114 is connected to the sliders 1121 of the two guide rail assemblies on both sides. The push plate portion and the U-shaped portion of the handle 114 are respectively limited by the guide rail assembly and the guide plate assembly, improving the stability of the handle's movement and the feeding accuracy.

[0062] There are two second return springs 1116, each corresponding to one of the two guide rail assemblies. Each guide rail assembly has a connecting rod on the outside of its slider 1121. Each slide 117 on the operating table 111 has a vertical rod 1122 on the side away from the handle 114. The second return springs 1116 are horizontally arranged, with one end of the second return spring 1116 fitted onto the connecting rod and the other end fitted onto the vertical rod 1122. Under the pulling force of the second return springs 1116, the slider 1121 drives the handle 114 to move, pushing the sheet metal at the outlet of the feeding box 115 to the groove of the lower die 112. At the same time, the sheet metal pushes the formed C-shaped clamp at the groove to move into the unloading plate 116 for unloading.

[0063] On both sides of the forming groove on the top surface of the lower die 112, there are two lateral limiting blocks 1125. The two lateral limiting blocks 1125 form a first channel for the sheet metal to enter and the formed C-shaped fixture to move out. Each lateral limiting block has an upper limiting block at its top. The upper limiting block is located inside the lateral limiting block 1125 and cooperates with the lateral limiting block 1125 to form an L-shaped structure. A second channel for the upper die 113 to move is left between the upper limiting blocks at the top of the two lateral limiting blocks 1125. Two limiting pins 1124 are provided on the side of the lateral limiting block 1125 near the blanking plate 116. The two limiting pins 1124 are respectively located on both sides of the blanking plate 116. A third channel for the formed C-shaped fixture to pass through is left between the two limiting pins 1124. Two limit pins 1124 are used to limit the displacement of the plate sheet pushed by the handle, so that the plate sheet moves to the top of the groove, while not affecting the normal feeding of the C-shaped fixture. A second detector is provided on one side of the limit pin 1124 to detect whether the plate sheet has moved into place.

[0064] The slide plate 117 is mounted on the lifting plate 118 and moves synchronously with the lifting plate 118. The end face of the slide plate 117 near the handle 114 is an inclined surface, which is inclined from top to bottom away from the handle 114. There are two slide plates 117, which correspond one-to-one with the two guide rail assemblies. A roller 1123 is rotatably mounted on the inner side wall of the slider 1121 of each guide rail assembly away from the handle 114. The inclined surface of the slide plate 117 fits against the arc-shaped surface of the roller 1123. When the slide plate 117 moves downward with the lifting plate 118, the roller 1123 rolls along the inclined surface of the slide plate 117 and pushes the slider 1121 to move against the tension of the second return spring. The slider 1121 drives the handle 114 to move to the side of the feeding box 115 away from the lower die 112.

[0065] When the bending machine bends, the lifting plate 118 moves the upper die 113 downward to press the sheet metal at the groove of the lower die 112, deforming the sheet metal and pressing the lifting block 1111 downward to compress the first return spring 1112. At the same time, the sliding plate 117 moves downward with the lifting plate 118 and pushes the slider 1121 overcoming the tension of the second return spring 1116 via the roller 1123. The slider 1121 drives the handle 114 to move to the side of the feeding box 115 away from the lower die 112. Under the action of gravity, the sheet metal in the feeding box 115 passes through the discharge port of the feeding box 115 and the upper guide plate 111. The connecting groove 1119 of 8 falls into the feeding groove; after bending and forming, the lifting plate 118 drives the upper mold 113 to move upward, and the lifting block 1111 moves upward under the elastic force of the first return spring 1112 to automatically eject the formed C-shaped fixture out of the mold groove. At the same time, the sliding plate 117 moves upward with the lifting plate 118, and the slider 1121 moves the handle 114 under the pulling force of the second return spring 1116 to push the plate sheet in the feeding groove to the mold groove of the lower die 112 to complete the feeding. At the same time, the plate sheet pushes the formed C-shaped fixture at the mold groove to move into the unloading plate 116 for unloading.

[0066] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A process for machining a C-clamp for a feeder card, characterized by: The processing technology is completed using a dedicated processing system, which includes a controller and, in sequence, a feeding tray, a flattening mechanism, a buffer mechanism, a transition mechanism, a pressing mechanism, a cutting machine, a first vibrating plate, a feeding table, a dry grinding machine, a second vibrating plate, and a bending machine. The buffer mechanism includes a bracket, a proximity switch, three protective plates, and an arc-shaped thin plate capable of elastic deformation. The bracket has three mounting seats at its upper end, which are respectively located in the middle and on both sides of the bracket. Three protective plates correspond one-to-one with the mounting seats and are installed below the corresponding mounting seats via movable rods. Each mounting seat includes a column and a mounting plate. The column is vertically installed on the top surface of the bracket, and the mounting plate is installed on the top of the column. The mounting plate of the mounting seat located in the middle of the bracket is horizontally set and has a first through hole. The mounting plates of the mounting seats located on both sides of the bracket are inclined from top to bottom away from the middle of the bracket and have waist-shaped holes. The movable rod is movably inserted into the first through hole or waist-shaped hole of the corresponding mounting plate. The protective plate is installed at the lower end of the movable rod. The upper end of the movable rod is threaded with a limit nut. A return spring is sleeved on the movable rod. One end of the return spring abuts against the upper end of the protective plate, and the other end abuts against the bottom end of the mounting plate. An arc-shaped thin plate is set below the three protective plates and connects the three protective plates to form a whole. A proximity switch is installed at the upper end of the middle mounting seat and matches the protective plate corresponding to the middle mounting seat. The proximity switch controls the feeding speed of the feeding tray through a controller. The processing technology includes the following steps: S1. Workpiece Cutting and Punching: After the sheet metal roll is unwound from the feeding tray, it is sequentially flattened by the flattening mechanism, flattened by the transition mechanism, and flattened and positioned by the pressing mechanism before being conveyed forward to the cutting machine. During the conveying process, the feeding speed of the feeding tray is adjusted by the buffer mechanism. After the cutting machine recognizes that the sheet metal has been conveyed to the correct position, the upper cutter head of the cutting machine moves to punch and cut the sheet metal at the same time, obtaining a sheet metal sheet with three through holes. The pushing mechanism on the cutting machine uses a detector to detect the quality of the sheet metal sheet, and according to the quality detection results, the qualified sheet metal sheet and the unqualified sheet metal sheet are cut out separately. The feeding tray releases material once for each sheet metal sheet cut out. S2. Deburring the workpiece: The pushing mechanism on the cutting machine feeds qualified sheet metal into the first vibrating plate. The first vibrating plate conveys the sheet metal one by one to the feeding table for stacking. The counter counts the number of sheet metal stacked on the feeding table. The feeding table moves the stacked sheet metal into the dry grinder in one go. The dry grinder starts to rotate forward to grind the sheet metal inside. When the number of sheet metal stacked by the counter reaches the preset value, the dry grinder reverses and feeds the ground sheet metal into the second vibrating plate. S3. Workpiece bending and shaping: The second vibratory feeder transports the polished sheet metal pieces one by one into the feeding box of the bending machine. The bending machine's handle pushes the sheet metal pieces in the feeding box to the lower die. After the bending machine recognizes that the sheet metal pieces have moved into place, the upper die of the bending machine presses the sheet metal pieces into the groove of the lower die for bending. The handle automatically returns to its original position. After bending and forming, a C-shaped clamp is obtained. The upper die resets, the C-shaped clamp automatically moves out of the groove of the lower die, and the handle automatically pushes the sheet metal pieces to the lower die and pushes the C-shaped clamp at the lower die to the unloading plate to complete the unloading. Each time the handle returns to its original position, the second vibratory feeder transports one sheet metal piece into the feeding box.

2. The machining process of the C-clamp for the feeder card according to claim 1, characterized in that: The cutting head of the cutting machine and the upper die of the bending machine have the same operating frequency and timing.

3. The machining process of the C-clip of the feeder card according to claim 1, characterized in that: The preset value is set according to the number of C-shaped clamps formed within the grinding time, and the grinding effect is ensured by adjusting the forward rotation speed of the dry grinder.

4. The process for machining a C-clip for a feeder card according to claim 1, wherein: The bending machine includes an operating table, a lower die, an upper die, a handle, a feeding box, a feeding plate, and a sliding plate; The lower die is installed on the top surface of the operating table. The upper die is positioned directly above the lower die via a lifting plate. The lifting plate is driven to move up and down by a power drive component, which in turn moves the upper die up and down. A groove is opened on the top surface of the lower die for the upper die to enter. A lifting block is movably installed in the groove. A first return spring is provided below the lifting block. The lifting block moves upward under the force of the first return spring to push the formed C-shaped fixture out of the groove. The feeding box and the unloading plate are respectively arranged on both sides of the lower die. The unloading plate is inclined from top to bottom towards the side away from the lower die. The feeding box is located above the lower die. The feeding box has a storage cavity for longitudinally stacking sheet metal. The bottom of the feeding box has a discharge port. The handle is horizontally movable between the feeding box and the lower die through a guide mechanism and is connected to the operating table through a second return spring. Under the pulling force of the second return spring, the handle pushes the sheet metal at the discharge port of the feeding box to the lower die. At the same time, the sheet metal pushes the formed C-shaped clamp to move into the unloading plate for unloading. The slide plate is mounted on the lifting plate and moves synchronously with the lifting plate. The end face of the slide plate near the handle is inclined and tilts from top to bottom away from the handle. When the slide plate moves downward with the lifting plate, the inclined surface of the slide plate pushes the handle, causing the handle to overcome the tension of the second return spring and move to the side of the feeding box away from the lower die.

5. The processing technology of the C-shaped clamp for feeder cards according to claim 4, characterized in that: The handle includes an integrally formed push plate part and a U-shaped part. The push plate part is located in the middle of the U-shaped part and cooperates with the U-shaped part to form a mountain-shaped structure. The guiding mechanism includes a guide plate assembly and a pair of parallel guide rail assemblies. The guide plate assembly includes a lower guide plate and an upper guide plate. The lower guide plate is mounted on the operating table, and the upper guide plate is mounted on the top surface of the lower guide plate. The upper guide plate has a feeding groove that cooperates with the lower guide plate to allow the push plate part of the handle to enter and move. The push plate part of the handle is located in the feeding groove. The feeding box is mounted on the top surface of the upper guide plate. The upper guide plate at the outlet of the feeding box has a connecting groove for the sheet metal at the outlet of the feeding box to pass through and enter the feeding groove. The guide rail assemblies are located on both sides of the lower die. The guide rail assembly includes a guide rail and a slider. The guide rail is mounted on the top surface of the operating table, and the slider is slidably mounted on the guide rail. The two sides of the U-shaped part of the handle are respectively connected to the sliders of the two guide rail assemblies.

6. The process for machining a C-clip for a feeder card according to claim 5, wherein: The slide has two slides, each corresponding to one of the two guide rail assemblies. Each guide rail assembly has a roller rotatably mounted on the side of the slider away from the handle, and the inclined surface of the slide fits into the arc-shaped surface of the roller.

7. The process for machining a C-clip for a feeder card according to claim 4, wherein: An adjusting bolt is provided below the lifting block. The central axis of the adjusting bolt is vertically set. The bottom end of the adjusting bolt has a limiting cap. A groove is opened on the bottom surface of the operating table for the limiting cap to move up and down. The limiting cap is movably set in the groove. A threaded hole is opened on the bottom surface of the lifting block. The top end of the adjusting bolt passes through the operating table and is threaded into the threaded hole. The first return spring is set in the groove of the lower die and sleeved on the outside of the adjusting bolt. One end of the first return spring abuts against the bottom surface of the lifting block, and the other end abuts against the bottom surface of the groove.

8. The process for machining a C-clip for a feeder card according to claim 4, wherein: The lower die has a lateral limiting block on each side of the forming groove on the top surface of the die. A first channel is formed between the two lateral limiting blocks for the sheet to enter and the formed C-shaped fixture to exit. Each lateral limiting block has an upper limiting block on its top. The upper limiting block is located inside the lateral limiting block and cooperates with the lateral limiting block to form an L-shaped structure. A second channel is left between the upper limiting blocks on the top of the two lateral limiting blocks for the upper die to move. Two limiting pins are provided on the side of the lateral limiting block near the blanking plate. The two limiting pins are respectively located on both sides of the blanking plate. A third channel is left between the two limiting pins for the formed C-shaped fixture to pass through.

9. The process for machining a C-clip for a feeder card according to claim 4, wherein: The bottom of the upper mold is equipped with a positioning pin that matches the through hole in the middle of the sheet metal.

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