A punching device for hydraulic cylinder pistons

Abstract

This invention relates to the field of workpiece drilling technology, specifically a punching device for hydraulic cylinder pistons. It includes a processing table, with a first conveying mechanism, a punching mechanism, a tapping mechanism, and a second conveying mechanism sequentially arranged along the edge of the processing table. The processing table includes a rotatable lifting assembly, on which a cross-shaped worktable is mounted. Clamping components are provided at each of the four corners of the worktable. This invention achieves automatic loading and unloading of pistons by setting up the first and second conveying mechanisms at the processing table. Additionally, a tapping mechanism is added to the processing table to perform tapping after drilling. Finally, the entire production line is circulated by rotating the processing table. This not only improves production efficiency and reduces costs but also reduces the labor intensity of personnel.

Description

Technical Field

[0001] This invention belongs to the field of workpiece punching technology, specifically a punching device for hydraulic cylinder pistons. Background Technology

[0002] The piston is a crucial component in a hydraulic cylinder, primarily used to connect with the piston rod, which is then installed together into the cylinder barrel of the hydraulic cylinder. During piston production, a drilling device is used to create a hole in the piston, and then internal threads are machined onto the inner surface of the hole to connect the piston to the piston rod. Existing technology CN216680287U discloses a drilling device for hydraulic component production. This device uses a laser irradiation lamp for precise drilling location, a spray hood to suppress dust from generated fumes, and pressure nozzles to flush, clean, and collect generated debris, reducing the labor intensity of workers. However, the automation level of the aforementioned drilling equipment is relatively low, requiring manual loading and unloading. Furthermore, this drilling device can only drill holes in the piston; if internal threads are subsequently machined onto the inner surface of the hole, it must be manually transferred to a tapping mechanism for further processing. This is not only inefficient but also results in high labor intensity for workers. Summary of the Invention

[0003] The purpose of this invention is to provide a punching device for a hydraulic cylinder piston, thereby solving the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: a punching device for a hydraulic cylinder piston, comprising a processing table, with a first conveying mechanism, a punching mechanism, a tapping mechanism, and a second conveying mechanism sequentially arranged along the edge of the processing table. The processing table includes a rotatable lifting assembly, on which a cross-shaped worktable is mounted, and clamping assemblies are provided at each of the four corners of the worktable.

[0004] Preferably, the first conveying mechanism and the second conveying mechanism have the same structure, including a conveyor belt, a fixed frame is installed on the conveyor belt, a robot arm is installed on the fixed frame, and the robot arm is installed near the worktable.

[0005] Preferably, the rotatable lifting assembly includes a frame, a mounting frame in the middle of the frame, a support block above the mounting frame, a mounting hole on the mounting frame, a driven gear sleeved around the mounting frame in the mounting hole, a lifting mechanism installed in the mounting hole, the end of the lifting mechanism passing through the support block and connected to a worktable, two auxiliary telescopic rods below the worktable, the bottoms of the two auxiliary telescopic rods fixed to the driven gear, a first drive assembly installed on one side of the frame to drive the driven gear to rotate, and a second drive assembly installed on the other side of the frame to drive the lifting mechanism to lift.

[0006] Preferably, the lifting mechanism includes a lead screw, which is installed in a mounting hole. A first gear is connected to the bottom of the lead screw, and a movable sleeve is also sleeved on the lead screw. The movable sleeve passes through a support block and is connected to the worktable. The second drive assembly includes a second rotary motor, which is horizontally fixed on the frame. The shaft of the second rotary motor passes through the frame and is connected to a second gear. The second gear meshes with the first gear.

[0007] Preferably, the first drive assembly includes a first rotary motor, which is vertically fixed on the frame, and a drive gear is connected to the end of the shaft of the second rotary motor, wherein the drive gear meshes with the driven gear.

[0008] Preferably, the clamping assembly includes an arc-shaped placement frame, a limiting plate extending from the rear side of the arc-shaped placement frame, a through hole in the middle of the limiting plate, and a set of clamps on both sides of the arc-shaped placement frame. Each clamp includes a bracket, a cylinder is fixed on the bracket, and a pin is provided at the end of the piston rod of the cylinder.

[0009] Preferably, the robotic arm includes a hydraulic rod, a first robotic arm, and a second robotic arm. The hydraulic rod is mounted on the upper end of a fixed frame, and the piston rod of the hydraulic rod passes through the fixed frame and connects to the first robotic arm. A rotating shaft runs through the inside of the first robotic arm, and a small gear is provided on one end of the rotating shaft. A small rotary motor is installed inside the first robotic arm, and the rotating shaft of the small rotary motor passes through the first robotic arm and connects to an outer drive gear. The drive gear meshes with the small gear. The second robotic arm has a U-shaped structure design, and both ends of the second robotic arm are connected to corresponding rotating shafts. A gripper is also provided below the second robotic arm.

[0010] Preferably, the gripper includes a housing, which is fixed below the second robotic arm. Inside the housing are two symmetrical worm gears, each of which is connected to a gripping arm. The ends of the gripping arms extend outward from the housing. A worm meshes between the two worm gears, and the shaft of the worm is connected to a forward and reverse rotating motor. Each gripping arm is also provided with a vacuum nozzle at its end, and each vacuum nozzle is connected to an air extraction pipe. The air extraction pipe passes through the inside of the gripping arm and is then connected to a vacuum pump, which is fixed to the housing.

[0011] Preferably, the punching mechanism includes a first body, on which a first hydraulic rod is provided, and a punching machine is mounted on the piston rod of the first hydraulic rod. The drill head of the punching machine is replaceable.

[0012] Preferably, the tapping mechanism includes a second body, on which a second hydraulic rod is provided. A tapping machine is mounted on the piston rod of the second hydraulic rod, and the tapping head of the tapping machine is replaceable. Compared with the prior art, the beneficial effects of the present invention are: the present invention realizes automatic loading and unloading of pistons by setting a first conveying mechanism and a second conveying mechanism at the processing table, and adds a tapping mechanism at the processing table to realize tapping after drilling; the specially designed processing table, driven by the rotatable lifting component, can realize three movement modes, not only driving the worktable to rotate and lift at the same time, but also rotating or lifting alone; thus, the different movement modes of the processing table can be used to drive the workpiece to pass through the corresponding equipment in sequence and perform different processes, thereby enabling the entire production line to produce in a cycle; in summary, the present invention has a high degree of automation, which can improve production efficiency, reduce costs, and reduce the labor intensity of personnel. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the overall structure of the present invention after rotation;

[0015] Figure 3 This is a schematic diagram of the processing table of the present invention;

[0016] Figure 4 This is a schematic diagram of the rotatable lifting component of the present invention;

[0017] Figure 5 This is a partial cross-sectional schematic diagram of the rotatable lifting component of the present invention;

[0018] Figure 6 This is a schematic diagram of the arc-shaped placement rack of the present invention;

[0019] Figure 7 This is a schematic diagram of the fixture of the present invention;

[0020] Figure 8 This is a schematic diagram of the conveying mechanism of the present invention;

[0021] Figure 9 This is a schematic diagram of the structure of the robotic arm of the present invention;

[0022] Figure 10 This is a schematic diagram showing the connection between the first robotic arm and the second robotic arm of the present invention;

[0023] Figure 11 This is a cross-sectional view of the gripper structure of the present invention;

[0024] Figure 12 This is a schematic diagram of the gripper structure of the present invention;

[0025] Figure 13 This is a schematic diagram of the drilling mechanism of the present invention;

[0026] Figure 14 This is a schematic diagram of the tapping mechanism of the present invention;

[0027] In the diagram: Processing table-1, First conveying mechanism-2, Drilling mechanism-3, Tapping mechanism-4, Second conveying mechanism-5, Rotatable lifting assembly-11, Worktable-12, Clamping assembly-13, Frame-111, Mounting bracket-112, Support block-113, Mounting hole-114, Driven gear-115, Lifting mechanism-116, First drive assembly-117, Second drive assembly-118, Auxiliary telescopic rod-121, Lead screw-1161, First gear-1162, Movable sleeve-1163, First rotary motor-1171, Drive gear-1172, Second rotary motor-1181, Second gear-1182, Arc-shaped placement bracket-131, Limiting plate-132, Through hole-133, Clamping... Tool-134, bracket-1341, cylinder-1342, ejector pin-1343, conveyor belt-21, fixed frame-22, robotic arm-23, hydraulic rod-231, first robotic arm-232, second robotic arm-233, gripper-234, rotating shaft-2321, small gear-2322, small rotary motor-2323, drive gear-2324, housing-2341, worm gear-2342, clamping arm-2343, worm-2344, forward and reverse motor-2345, vacuum nozzle-2346, air extraction pipe-2347, vacuum pump-2348, first machine body-31, first hydraulic rod-32, punching machine-34, second machine body-41, second hydraulic rod-42, tapping machine-44. Specific Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-2 The present invention provides a technical solution: a punching device for a hydraulic cylinder piston, including a processing table 1, and a first conveying mechanism 2, a punching mechanism 3, a tapping mechanism 4 and a second conveying mechanism 5 are arranged sequentially along the edge of the processing table 1. First, the first conveying mechanism is used to transport the piston to the processing table, and then the processing table transfers the piston to the punching mechanism for punching. After punching, the processing table continues to transfer the piston to the tapping mechanism to process the internal thread on the inner side of the hole. Then, the processing table drives the piston to the second conveying mechanism again, and finally the second conveying mechanism removes it from the processing table and then transports it for feeding.

[0030] like Figure 3 As shown, in this embodiment, the processing table 1 includes a rotatable lifting assembly 11, on which a cross-shaped worktable 12 is mounted. The rotatable lifting assembly 11 is used to drive the worktable to perform three modes of movement, including individual rotation or individual lifting, and simultaneous rotation and lifting. Then, a clamping assembly 13 is set on each of the four corners of the worktable 12 for positioning the piston.

[0031] like Figure 4 As shown, the rotatable lifting assembly 11 includes a frame 111, with a mounting frame 112 in the middle of the frame 111 and a support block 113 above the mounting frame 112. A driven gear 115 is then fitted onto the mounting frame 112. A mounting hole 114 is then opened on the mounting frame 112, and the bottom of the lifting mechanism 116 is installed into the mounting hole 114. Simultaneously, the end of the lifting mechanism 116 passes through the support block 113 and is rotatably connected to the worktable 12. In addition, two auxiliary telescopic rods 121 are provided below the worktable 12, and the bottoms of the two auxiliary telescopic rods 121 are fixed to the driven gear 115. A first drive assembly 117 is installed on one side of the frame 111, which is used to drive the driven gear 115 to rotate. A second drive assembly 118 is installed on the other side of the frame 111, which is used to drive the lifting mechanism 116 to lift.

[0032] like Figure 4-5As shown, the first drive assembly 117 includes a first rotary motor 1171 (which supports forward and reverse rotation). The first rotary motor 1171 is vertically fixed on the frame 111. The shaft end of the second rotary motor 1181 is connected to a drive gear 1172. The drive gear 1172 meshes with the driven gear 115. When the first rotary motor 1171 starts, it drives the drive gear 1172 to rotate, thereby driving the driven gear 115 to rotate. During the rotation of the driven gear 115, the two auxiliary telescopic rods 121 drive the worktable to rotate together.

[0033] like Figure 4-5 As shown, the lifting mechanism 116 includes a lead screw 1161, which is connected to the mounting hole 114. A first gear 1162 is connected to the bottom of the lead screw 1161. A movable sleeve 1163 is then fitted onto the lead screw 1161, and the movable sleeve 1163 passes through the support block 113 and is rotatably connected to the worktable 12. In addition, the second drive assembly 118 includes a second rotary motor 1181 (which supports forward and reverse rotation). The second rotary motor 1181 is horizontally fixed on the frame 111, and the shaft of the second rotary motor 1181 passes through the frame and is connected to the second gear 1182. At the same time, the second gear 1182 and the first gear 1162 are meshed with each other. When the second rotary motor starts, it drives the second gear to rotate, thereby driving the first gear to rotate. At this time, the lead screw will also rotate. In this way, the movable sleeve fitted on the lead screw can achieve lifting.

[0034] like Figure 6-7 As shown, the clamping assembly 13 includes an arc-shaped placement frame 131 (with a groove), and a limiting plate 132 extends from the rear side of the arc-shaped placement frame 131. A through hole 133 is opened in the middle of the limiting plate 132. At the same time, a set of clamps 134 are set on both sides of the arc-shaped placement frame 131 for fixing the clamping piston. The clamps 134 include a bracket 1341, a cylinder 1342 is fixed on the bracket 1341, and a pin 1343 is set at the end of the piston rod of the cylinder 1342. The extension and retraction of the cylinder pushes the pins on both sides to move closer to each other to clamp or move away from each other to release.

[0035] In this embodiment, the first conveying mechanism 2 and the second conveying mechanism 5 have the same structure, such as... Figure 8 As shown, the system includes a conveyor belt 21 (on which multiple placement racks are provided for placing pistons), a fixed frame 22 is installed on the conveyor belt 21, and a robot arm 23 is installed on the fixed frame 22, ensuring that the robot arm 23 is installed close to the worktable 12; when the conveyor belt transports the piston to the robot arm, the robot arm picks up the piston and places it on the worktable 12.

[0036] like Figure 9-10As shown, the robotic arm 23 includes a hydraulic rod 231, a first robotic arm 232, and a second robotic arm 233. First, the hydraulic rod 231 is mounted on the upper end of the fixed frame 22. Then, the piston rod of the hydraulic rod 231 passes through the fixed frame 22 and connects to the first robotic arm 232. Next, a rotating shaft 2321 passes through the first robotic arm 232, and a small gear 2322 is installed on one end of the rotating shaft 2321. Additionally, a small rotary motor 2323 is installed inside the first robotic arm 232, and the shaft of this small rotary motor 2323 passes through the first robotic arm. 232 is connected to the outer drive gear 2324, which meshes with the small gear 2322; the second robotic arm 233 has a U-shaped structure design, with both ends of the second robotic arm 233 being connected to the corresponding rotating shaft 2321, and a gripper 234 is set below the second robotic arm 233; during operation, the two robotic arms and the gripper are mainly driven to move up and down by hydraulic rods, and the gripper is used to clamp the piston. The small rotary motor 2323 drives the drive gear 2324 to rotate, which in turn drives the small gear 2322 to rotate, causing the second robotic arm 233 to be lifted.

[0037] like Figure 11-12 As shown, the gripper 234 includes a housing 2341, which is fixed below the second robotic arm 233. Two symmetrical worm gears 2342 are disposed inside the housing 2341, and a gripping arm 2343 is connected to each worm gear 2342. The end of the gripping arm 2343 extends outward from the housing 2341. A worm 2344 meshes between the two worm gears 2342. The shaft of the worm 2344 is connected to a forward / reverse motor 2345. When the forward / reverse motor 2345 rotates forward, driving the worm to rotate, it simultaneously drives one worm gear to rotate clockwise. The counterclockwise rotation causes the two clamping arms to open to both sides. When the forward and reverse motor 2345 reverses and drives the worm gear to rotate, it also drives one worm wheel to rotate clockwise and the other worm wheel to rotate counterclockwise, thus bringing the two clamping arms closer together and clamping them tightly. In addition, each clamping arm 2343 is equipped with a vacuum nozzle 2346 at its end. Each vacuum nozzle 2346 is connected to a suction pipe 2347. After passing through the inside of the clamping arm 2343, the suction pipe 2347 is connected to a vacuum pump 2348 fixed on the housing 2341. The vacuum pump can then draw air, causing the vacuum nozzle to tightly adhere to the piston.

[0038] like Figure 13 As shown, in this embodiment, the drilling mechanism 3 includes a first body 31, on which a first hydraulic rod 32 is provided. A punching machine 34 is installed on the piston rod of the first hydraulic rod 32. The punching machine 34 corresponds to the piston on the clamping assembly 13 so as to drill the piston. In addition, its drill head is replaceable, so that the corresponding drill head can be selected according to the actual hole diameter.

[0039] like Figure 14 As shown, in this embodiment, the tapping mechanism 4 includes a second body 41, on which a second hydraulic rod 42 is provided. A tapping machine 44 is mounted on the piston rod of the second hydraulic rod 42. The tapping head of the tapping machine 44 is replaceable, so that the corresponding tapping head can be selected according to the actual hole diameter.

[0040] Working Principle: The first conveyor mechanism serves as the feeding device. The worker places the piston to be processed onto the conveyor belt, which transports it to below the robotic arm. At this point, the hydraulic rod drives the two robotic arms and the gripper to move downwards until the gripper approaches and clamps the piston. Then, a small rotary motor starts, and the drive gear rotates, causing the second robotic arm 233 to lift until it bends into an L-shape (during the robotic arm's movement, the worktable is "X" shaped to facilitate bending). The hydraulic rod then drives the entire assembly upwards again, placing the gripped piston above the worktable. The worktable can then rotate (after rotation, the worktable forms a cross shape). At this point, the clamping mechanism is aligned vertically with the piston. When the hydraulic rod descends again, the piston can be placed onto the clamping mechanism. Once the piston is on the clamping mechanism, the grippers on both sides clamp it tightly. Then, the processing table rotates again... The piston on the worktable is adjusted to align with the punching machine of the drilling mechanism. Then, the first hydraulic rod pushes the punching machine forward to drill a hole in the piston. After drilling, the worktable rotates again while being adjusted to align with the tapping machine of the tapping mechanism. Next, the second hydraulic cylinder pushes the tapping machine forward to machine internal threads on the piston. After tapping, the worktable rotates again (the robotic arm on the second conveying mechanism is ready to move when the worktable rotates into an "X" shape). When the worktable rotates again into a "+" shape, the piston aligns with the robotic arm of the second conveying mechanism. Finally, the robotic arm of the second conveying mechanism removes the machined piston and places it on the conveyor belt for unloading. This fully automated processing method allows for continuous cyclic processing, improving production efficiency, reducing costs, and decreasing labor intensity.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A piercing device for hydraulic cylinder pistons, comprising a machining table (1), characterised in that: First conveying mechanism (2), punching mechanism (3), tapping mechanism (4) and second conveying mechanism (5) are sequentially arranged along the edge of the processing table (1), the processing table (1) comprises a rotatable lifting assembly (11), a cross-shaped workbench (12) is installed on the rotatable lifting assembly (11), and clamping assemblies (13) are arranged on the four corners of the workbench (12); The rotatable lifting assembly (11) comprises a rack (111), a mounting frame (112) is arranged in the middle of the rack (111), a supporting block (113) is arranged above the mounting frame (112), a mounting hole (114) is formed in the mounting frame (112), a driven gear (115) is sleeved on the periphery of the mounting frame (112), a lifting mechanism (116) is installed in the mounting hole (114), and the end of the lifting mechanism (116) is connected with the workbench (12) through the supporting block (113); At least two auxiliary telescopic rods (121) are further arranged below the workbench (12), and the bottom of the auxiliary telescopic rod (121) is fixed on the driven gear (115); The first conveying mechanism (2) and the second conveying mechanism (5) are consistent in structure, comprising a conveying belt (21), a fixed frame (22) is installed on the conveying belt (21), and a mechanical hand (23) is installed on the fixed frame (22); The mechanical hand (23) is installed close to the workbench (12); A first driving assembly (117) is installed on one side of the rack (111), the first driving assembly (117) is used for driving the driven gear (115) to rotate, and a second driving assembly (118) is installed on the other side of the rack (111); The second driving assembly (118) is used for driving the lifting mechanism (116) to lift; The lifting mechanism (116) comprises a lead screw (1161), the lead screw (1161) is installed in the mounting hole (114), the bottom of the lead screw (1161) is connected with a first gear (1162), and a movable sleeve (1163) is further sleeved on the lead screw (1161); The movable sleeve (1163) is connected with the workbench (12) through the supporting block (113); The second driving assembly (118) comprises a second rotary motor (1181), the second rotary motor (1181) is transversely fixed on the rack (111), the rotating shaft of the second rotary motor (1181) is connected with a second gear (1182) through the rack, and the second gear (1182) and the first gear (1162) are engaged with each other; The first driving assembly (117) comprises a first rotary motor (1171), the first rotary motor (1171) is vertically fixed on the rack (111), the end of the rotating shaft of the second rotary motor (1181) is connected with a driving gear (1172), and the driving gear (1172) and the driven gear (115) are engaged with each other; The clamping assembly (13) comprises an arc-shaped placing rack (131), the rear side of the arc-shaped placing rack (131) extends to a limiting plate (132), the middle of the limiting plate (132) is provided with a through hole (133), the two sides of the arc-shaped placing rack (131) are provided with a group of clamps (134), the clamp (134) comprises a support (1341), a pneumatic cylinder (1342) is fixed on the support (1341), and a thimble (1343) is arranged at the end of the piston rod of the pneumatic cylinder (1342).

2. A piercing device for a hydraulic cylinder piston according to claim 1, characterized in that: The mechanical arm (23) comprises a hydraulic rod (231), a first mechanical arm (232) and a second mechanical arm (233), the hydraulic rod (231) is installed on the upper end of the fixed frame (22), the piston rod of the hydraulic rod (231) penetrates through the fixed frame (22) and is connected with the first mechanical arm (232), a rotating shaft (2321) penetrates through the first mechanical arm (232), a small gear (2322) is arranged at one end of the rotating shaft (2321), a small rotary motor (2323) is installed in the first mechanical arm (232), the rotating shaft of the small rotary motor (2323) penetrates through the first mechanical arm (232) and is connected with a driving gear (2324) outside, and the driving gear (2324) is engaged with the small gear (2322); the second mechanical arm (233) is designed in a U-shaped structure, the two ends of the second mechanical arm (233) are connected to corresponding rotating shafts (2321), and a gripper (234) is further arranged below the second mechanical arm (233).

3. A piercing device for a hydraulic cylinder piston according to claim 2, characterized in that: The gripper (234) comprises a shell (2341), the shell (2341) is fixed below the second mechanical arm (233), two symmetrical worm gears (2342) are arranged in the shell (2341), a clamping arm (2343) is connected to each worm gear (2342), the end of the clamping arm (2343) extends out of the shell (2341), a worm (2344) is engaged between the two worm gears (2342), the rotating shaft of the worm (2344) is connected with a forward and reverse motor (2345), a vacuum nozzle (2346) is further arranged at the end of each clamping arm (2343), each vacuum nozzle (2346) is connected with a suction pipe (2347), the suction pipe (2347) penetrates through the inside of the clamping arm (2343) and is connected to a vacuum pump (2348), and the vacuum pump (2348) is fixed on the shell (2341).

4. A piercing device for a hydraulic cylinder piston according to claim 3, characterized in that: The punching mechanism (3) comprises a first machine body (31), a first hydraulic rod (32) is arranged on the first machine body (31), a punch (34) is arranged at the end of the piston rod of the first hydraulic rod (32), and the drill bit part of the punch (34) is replaceable.

5. A piercing device for a hydraulic cylinder piston according to claim 4, characterized in that: The tapping mechanism (4) comprises a second machine body (41), a second hydraulic rod (42) is arranged on the second machine body (41), a tapping machine (44) is arranged at the end of the piston rod of the second hydraulic rod (42), and the tapping head part of the tapping machine (44) is replaceable.

Images