Automatic feeding and locking structure of blanking die
By using the self-locking structure of the rear and front gripper assemblies and the cylinder-driven sliding block, the wire can be efficiently clamped and released, solving the problem of low efficiency in existing feeding devices, improving production efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG FUHUA MACHINERY EQUIP MFG CO LTD
- Filing Date
- 2025-08-16
- Publication Date
- 2026-07-17
Smart Images
Figure CN224508344U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of mold feeding devices, specifically to an automatic feeding and locking structure for a blanking mold. Background Technology
[0002] The press is equipped with a blanking die and a feeding device. The blanking die is used to stamp wire and includes an upper die and a lower die. The wire is used to form hinge pins. The upper die is installed on the press head and the lower die is installed on the press worktable. The feeding device is located at the feed port of the blanking die and is fixed on the worktable. When stamping, the feeding device conveys the wire from the feed port to the blanking die. The press head drives the upper die to move downward and close with the lower die to realize the stamping of the wire.
[0003] The feeding device includes a mounting base and a clamping assembly connected to the mounting base. The clamping assembly is used to clamp the wire and is connected to two cylinders. One cylinder drives the clamping assembly to clamp or release the wire, and the other cylinder pushes the wire on the clamping assembly to convey the wire from the feed port to the blanking die. However, the above-mentioned feeding device is inefficient and affects production efficiency. Utility Model Content
[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an automatic feeding and locking structure for a blanking die that improves efficiency by setting a rear gripper group and a front gripper group to achieve self-locking.
[0005] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:
[0006] An automatic feeding and locking structure for blanking die is used to clamp wire. It is installed on the worktable of a press and includes a mounting base fixed to the top surface of the worktable and a fixed clamping group, a movable clamping group and a cylinder connected to the mounting base.
[0007] The upper end of the mounting base is fixed with two forward-extending guide rails;
[0008] The fixed clamping assembly includes a positioning seat fixed to the mounting base or the two guide rails, and two opposing rear jaws rotatably connected to the positioning seat. The two rear jaws form a rear jaw assembly for clamping the rear end of the wire, and a rear spring assembly is provided between the rear jaws and the positioning seat to abut against both.
[0009] The movable clamping group is located in front of the fixed clamping group, and includes a slide block slidably connected to the two guide rails and two opposing front jaws rotatably connected to the slide block. The two front jaws form a front jaw group for clamping the front end of the wire and corresponding to the rear jaw group. A front spring assembly is provided between the front jaws and the slide block to abut against both of them.
[0010] The cylinder is fixed to the mounting base and its telescopic rod is fixedly connected to the slide block to drive the slide block to slide back and forth, so that one of the rear gripper group and the front gripper group clamps the wire, and the other of the rear gripper group and the front gripper group releases the wire.
[0011] Furthermore, a connecting seat is fixed to the front end face of the positioning seat and the slide seat respectively. The front end face of the two connecting seats is recessed to form a slot. The slot passes through the connecting seat in the left-right direction. The rear gripper and the front gripper are respectively engaged in the two slots and rotate with the two connecting seats respectively.
[0012] Furthermore, the slot located at the front of the two slots is the front slot, and the slot located at the rear of the two slots is the rear slot. Each of the left and right ends of the front slot and the rear slot is provided with a pivot. The two rear grippers are rotatably connected to the two pivots of the rear slot, and the two front grippers are rotatably connected to the two pivots of the front slot.
[0013] Furthermore, the two connecting seats are connected to the positioning seat and the slide seat respectively by bolts. Each connecting seat has a shaft hole at its left and right ends corresponding to the slot, and a pivot is engaged with a shaft hole.
[0014] Furthermore, the active ends of the rear gripper and the front gripper, away from the wire, extend out of the connector from the slot. The rear spring assembly is provided between the active end of the rear gripper and the positioning seat, and the front spring assembly is provided between the active end of the front gripper and the slide.
[0015] Furthermore, the positioning seat and the slide seat are respectively provided with a through fixing hole from their front end to the rear. The rear end of the connecting seat is fitted into the fixing hole and its end face is provided with a guide hole for cooperating with the wire in front of the slot. The guide hole passes through the connecting seat from front to back. The rear jaw assembly and the front jaw assembly respectively form a clamping space for clamping the wire. The clamping space corresponds to the guide hole.
[0016] Furthermore, each of the rear jaws and each of the front jaws has a clamping groove recessed on its clamping end face near the wire to adapt to the wire. The clamping groove extends through the front jaw and the rear jaw corresponding to it, and the clamping groove gradually shifts away from the wire from its front end to its rear end, so that each of the front jaws and each of the rear jaws forms an eccentric structure.
[0017] Furthermore, each of the rear spring assemblies and each of the front spring assemblies includes a push rod and a spring sleeved on the push rod. The push rods of the rear spring assembly and the front spring assembly are slidably connected to the positioning seat and the slide seat respectively and abut against the active ends of the rear gripper and the front gripper respectively. The springs of the rear spring assembly and the front spring assembly abut against the positioning seat and the slide seat respectively.
[0018] Furthermore, the front end faces of the positioning seat and the slide are respectively provided with a limiting hole corresponding to each spring, and a limiting hole is clearance-fitted with a spring. The bottom surface of each limiting hole is provided with a rod hole corresponding to the top rod, and a rod hole is slidably fitted with a top rod.
[0019] Furthermore, the system includes a limiting plate, with both ends of the limiting plate fixed to the front ends of the two guide rails, and both ends of the positioning seat fixed to the rear ends of the two guide rails. The sliding seat is located behind the limiting plate and can abut against the limiting plate. A body located between the two guide rails is fixed to the bottom surface of the sliding seat. The cylinder is located below the positioning seat and corresponds to the body. The telescopic rod of the cylinder is fixedly connected to the body.
[0020] This utility model's automatic feeding and locking structure for a blanking die comprises a rear gripper assembly for holding the rear end of the wire, a rear spring assembly, a slide block slidably connected to two guide rails, a front gripper assembly for holding the front end of the wire, a front spring assembly, and a cylinder connected to the slide block. The cylinder drives the slide block to slide back and forth, allowing one of the rear or front gripper assemblies to clamp the wire in a self-locking state. The other of the rear or front gripper assemblies releases the wire, allowing the cylinder to return to its original position. In other words, the same cylinder enables both the rear and front gripper assemblies to release or self-lock the wire, improving response speed and eliminating the need for multiple cylinders, resulting in a simpler structure and improved production efficiency while reducing costs. This utility model's automatic feeding and locking structure for a blanking die features fast response, simplicity, high reliability, stable feeding dimensions, and low cost. Attached Figure Description
[0021] Figure 1 This is a three-dimensional combined schematic diagram of the automatic feeding and locking structure of the blanking mold in an embodiment of this utility model;
[0022] Figure 2 for Figure 1 Another perspective 3D illustration;
[0023] Figure 3 for Figure 1 Partial three-dimensional exploded view of the moving clamping assembly;
[0024] Figure 4 for Figure 1Partial three-dimensional exploded view of the fixed clamping assembly;
[0025] Figure 5 for Figure 1 A sectional view. Detailed Implementation
[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:
[0027] like Figures 1 to 5 As shown, this utility model embodiment provides an automatic feeding and locking structure for a blanking die, used to clamp wire 100, which is installed on the worktable of a press. It includes a mounting base 1 fixed on the top surface of the worktable and a fixed clamping group 2, a movable clamping group 3 and a cylinder 4 connected to the mounting base 1.
[0028] like Figure 1 , Figure 4 As shown, the upper end of the mounting base 1 is fixed with two forward-extending guide rails 11, which are located at the left and right ends of the mounting base 1 and are arranged in parallel. The fixed clamping assembly 2 includes a positioning seat 21 fixed to the mounting base 1 or the two guide rails 11, and two opposing rear jaws 22 rotatably connected to the positioning seat 21. The two rear jaws 22 form a rear jaw assembly for clamping the rear end of the wire 100, and a rear spring assembly 23 is provided between the rear jaws 22 and the positioning seat 21 to abut against them. The rear spring assembly 23 is used to reset the rear jaws 22. In order to facilitate the adjustment of the installation position of the positioning seat 21, in this embodiment, the two ends of the positioning seat 21 are fixed to the rear ends of the two guide rails 11 by bolts. When it is necessary to adjust the position of the fixed clamping assembly 2, the bolts are loosened first, and then the positioning seat 21 is slid to the target position to achieve the purpose of changing the feeding length. Of course, in other embodiments, the positioning seat 21 can also be fixed to the mounting base 1, which can be selected according to actual needs.
[0029] like Figure 1 , Figure 3 As shown, the movable clamping assembly 3 is located directly in front of the fixed clamping assembly 2 and is used to forward transport the wire 100. It includes a slide block 31 slidably connected to two guide rails 11 and two opposing front grippers 32 rotatably connected to the slide block 31. Each end of the slide block 31 has a through-hole 312, which is slidably connected to a guide rail 11. A body 311 is fixed in the middle of the bottom surface of the slide block 31, located between the two guide rails 11, and extends rearward. The two front grippers 32 form a front gripper assembly for clamping the front end of the wire 100 and corresponding to the rear gripper assembly. A front spring assembly 34 is provided between the front grippers 32 and the slide block 31 to abut against both, and the front spring assembly 34 is used to reset the front grippers 32.
[0030] like Figure 1 , Figure 2As shown, cylinder 4 is fixed to the middle of mounting base 1 and its telescopic rod 41 is fixedly connected to slide 31. Specifically, cylinder 4 is located directly below positioning base 21 and corresponds to base 311. The telescopic rod 41 of cylinder 4 is fixedly connected to base 311 to drive slide 31 to slide back and forth, so that one of the rear gripper group and the front gripper group clamps wire 100 to form a self-locking state, and the other of the rear gripper group and the front gripper group releases wire 100 so that cylinder 4 can be smoothly reset. That is, the rear gripper group and the front gripper group can release or self-lock wire 100 through the same cylinder 4, which not only improves the response speed, but also eliminates the need to set multiple cylinders 4, thereby reducing the structure of air circuits and air circuit switching, making the structure simple, and thus improving production efficiency while reducing costs.
[0031] like Figures 2 to 4 As shown, to facilitate processing and simplify the structure, a connecting seat 5 is fixed to the front end face of the middle part of the positioning seat 21 and the slide 31, respectively. The front end faces of the two connecting seats 5 are recessed rearward to form a slot 51. The slot 51 extends through the connecting seat 5 in the left-right direction. The rear gripper 22 and the front gripper 32 respectively engage in the two slots 51 and rotate with the two connecting seats 5. Specifically, as... Figure 5 As shown, the front slot 51 is the one located in front of the two slots 51, and the rear slot 51 is the one located in the back. A pivot 52 is provided at each of the left and right ends of the front slot 51 and the rear slot 51. The two rear grippers 22 are rotatably connected to the two pivots 52 of the rear slot 51, and the two front grippers 32 are rotatably connected to the two pivots 52 of the front slot 51. In this embodiment, the two connecting seats 5 are connected to the positioning seat 21 and the slide seat 31 respectively by bolts. A shaft hole 53 is opened at each of the left and right ends of the top surface of each connecting seat 5, corresponding to the slot 51. A pivot 52 is engaged with a shaft hole 53.
[0032] like Figure 4 , Figure 5 As shown, for ease of disassembly and maintenance, the positioning seat 21 and the slide 31 each have a through fixing hole 7 extending from their front end to the rear. The rear end of the connecting seat 5 is fitted into the fixing hole 7, and its end face has a corresponding slot 51 with a guide hole 54 for cooperating with the wire 100 (e.g., Figure 1As shown), the guide hole 54 passes through the connecting seat 5 from front to back and can accurately guide the wire 100. The rear jaw assembly and the front jaw assembly respectively form a clamping space for clamping the wire 100. The clamping space corresponds to the guide hole 54. More specifically, each rear jaw 22 and each front jaw 32 has a clamping groove 8 that is adapted to the wire 100 recessed on the clamping end face near the wire 100. The clamping groove 8 passes through the front jaw 32 and the rear jaw 22 corresponding to it. That is, the clamping groove 8 of the two front jaws 32 forms one clamping space, and the clamping groove 8 of the two rear jaws 22 forms another clamping space. The two clamping spaces correspond to each other, and the clamping groove 8 gradually shifts away from the wire 100 from its front end to its rear end, so that each front jaw 32 and each rear jaw 22 respectively form an eccentric structure to achieve clamping or releasing the wire 100.
[0033] like Figure 2 , Figure 5 As shown, the active ends 6 of the rear gripper 22 and the front gripper 32, away from the wire 100, extend out of the connecting seat 5 from the slot 51. A rear spring assembly 23 is provided between the active end 6 of the rear gripper 22 and the positioning seat 21, and a front spring assembly 34 is provided between the active end 6 of the front gripper 32 and the slide 31. To improve positioning accuracy and simplify the structure, as... Figures 3 to 5 As shown, in this embodiment, each rear spring assembly 23 and each front spring assembly 34 includes a push rod 9 and a spring 91 sleeved on the push rod 9. The push rods 9 of the rear spring assembly 23 and the front spring assembly 34 are slidably connected to the positioning seat 21 and the slide seat 31, respectively, and abut against the active ends 6 of the rear gripper 22 and the front gripper 32, respectively. The springs 91 of the rear spring assembly 23 and the front spring assembly 34 abut against the positioning seat 21 and the slide seat 31, respectively. More specifically, the front end faces of the positioning seat 21 and the slide seat 31 are respectively provided with a limiting hole 92 corresponding to each spring 91. The limiting hole 92 is clearance-fitted with a spring 91. The bottom surface of each limiting hole 92 is provided with a rod hole 93 corresponding to the push rod 9. The rod hole 93 is slidably fitted with a push rod 9.
[0034] like Figure 2 , Figure 5 As shown, the automatic feeding and locking structure of the blanking die also includes a limiting plate 200 fixed to the rear side of the lower die of the blanking die. The two ends of the limiting plate 200 are respectively fixed to the front ends of the two guide rails 11. The slide 31 is located behind the limiting plate 200 and can abut against the limiting plate 200. By setting the limiting plate 200, the sliding stroke of the slide 31 can be controlled, thereby improving the accuracy of the feeding size.
[0035] like Figure 1 , Figure 5As shown, when the wire 100 is stamped, the cylinder 4 moves forward and drives the slide block 31 to slide forward through the telescopic rod 41. At this time, the two front grippers 32 are in a self-locking state to hold the front end of the wire 100. That is, the front gripper group is in a self-locking state to hold the wire 100, so that the wire 100 can move synchronously with the slide block 31. At the same time, the two rear grippers 22 are pulled forward and rotate in a direction away from the wire 100 to release the rear end of the wire 100. That is, the rear gripper group is in an unlocked state to release the wire 100, so that the front gripper group can transport the wire 100 forward to the blanking die. When cylinder 4 resets, the two rear grippers 22 self-lock under the retraction force of wire 100 to hold wire 100, that is, the rear gripper group locks wire 100. At this time, the telescopic rod 41 of cylinder 4 drives the slide block 31 to slide backward. Since wire 100 has been locked, during the retraction (sliding backward) process, the two front grippers 32 release wire 100 due to the forward pushing force, that is, the front gripper group releases wire 100, realizing a smooth reset. At the same time, the two front grippers 32 reset under the elastic force of spring 91. When the automatic feeding locking structure of the blanking die is in an idle state, the two rear grippers 22 and the two front grippers 32 reset under the elastic force of spring 91.
[0036] This utility model's automatic feeding and locking structure for a blanking die comprises a rear gripper assembly for holding the rear end of the wire, a rear spring assembly, a slide block slidably connected to two guide rails, a front gripper assembly for holding the front end of the wire, a front spring assembly, and a cylinder connected to the slide block. The cylinder drives the slide block to slide back and forth, allowing one of the rear or front gripper assemblies to clamp the wire in a self-locking state. The other of the rear or front gripper assemblies releases the wire, allowing the cylinder to return to its original position. In other words, the same cylinder enables both the rear and front gripper assemblies to release or self-lock the wire, improving response speed and eliminating the need for multiple cylinders, resulting in a simpler structure and improved production efficiency while reducing costs. This utility model's automatic feeding and locking structure for a blanking die features fast response, simplicity, high reliability, stable feeding dimensions, and low cost.
[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. An automatic feeding and locking structure of a blanking die for clamping a wire, which is installed on a worktable of a press machine, characterized in that, It includes a mounting base fixed to the top surface of the worktable and a fixed clamping assembly, a movable clamping assembly, and a cylinder connected to the mounting base; The upper end of the mounting base is fixed with two forward-extending guide rails; The fixed clamping assembly includes a positioning seat fixed to the mounting base or the two guide rails, and two opposing rear jaws rotatably connected to the positioning seat. The two rear jaws form a rear jaw assembly for clamping the rear end of the wire, and a rear spring assembly is provided between the rear jaws and the positioning seat to abut against both. The movable clamping group is located in front of the fixed clamping group, and includes a slide block slidably connected to the two guide rails and two opposing front jaws rotatably connected to the slide block. The two front jaws form a front jaw group for clamping the front end of the wire and corresponding to the rear jaw group. A front spring assembly is provided between the front jaws and the slide block to abut against both of them. The cylinder is fixed to the mounting base and its telescopic rod is fixedly connected to the slide block to drive the slide block to slide back and forth, so that one of the rear gripper group and the front gripper group clamps the wire, and the other of the rear gripper group and the front gripper group releases the wire.
2. The automatic feeding and locking structure of the blanking die according to claim 1, wherein The front end faces of the positioning seat and the slide are respectively fixed with a connecting seat. The front end faces of the two connecting seats are respectively recessed to form a slot. The slot passes through the connecting seat in the left-right direction. The rear gripper and the front gripper are respectively engaged in the two slots and rotate with the two connecting seats respectively.
3. The automatic feeding and locking structure of the blanking die according to claim 2, wherein The slot located at the front of the two slots is the front slot, and the slot located at the rear of the two slots is the rear slot. Each of the left and right ends of the front slot and the rear slot is provided with a pivot. The two rear jaws are rotatably connected to the two pivots of the rear slot, and the two front jaws are rotatably connected to the two pivots of the front slot.
4. The automatic blank holder locking structure of the blanking die according to claim 3, wherein The two connecting seats are connected to the positioning seat and the slide seat respectively by bolts. Each connecting seat has a shaft hole at the left and right ends of its top surface corresponding to the slot. A pivot is engaged with a shaft hole.
5. The automatic feeding and locking structure of the blanking die according to claim 2, wherein The active ends of the rear gripper and the front gripper, away from the wire, extend out of the connector from the slot. The rear spring assembly is provided between the active end of the rear gripper and the positioning seat, and the front spring assembly is provided between the active end of the front gripper and the slide.
6. The automatic feeding and locking structure of the blanking die according to claim 2, wherein The positioning seat and the slide seat are respectively provided with a fixing hole that passes through them from their front end to the rear. The rear end of the connecting seat is fitted into the fixing hole and its end face is provided with a guide hole that cooperates with the wire in front of the slot. The guide hole passes through the connecting seat from front to back. The rear jaw assembly and the front jaw assembly respectively form a clamping space for clamping the wire. The clamping space corresponds to the guide hole.
7. The automatic feeding and locking structure of a blanking die according to claim 1, wherein Each of the rear jaws and each of the front jaws has a clamping groove recessed on its clamping end face near the wire to adapt to the wire. The clamping groove extends through the front jaw and the rear jaw corresponding to it, and the clamping groove gradually shifts away from the wire from its front end to its rear end, so that each of the front jaws and each of the rear jaws forms an eccentric structure.
8. The automatic feeding and locking structure of the blanking die according to claim 1, wherein Each of the rear spring assemblies and each of the front spring assemblies includes a push rod and a spring sleeved on the push rod. The push rods of the rear spring assemblies and the front spring assemblies are slidably connected to the positioning seat and the slide seat respectively and abut against the active ends of the rear gripper and the front gripper respectively. The springs of the rear spring assemblies and the front spring assemblies abut against the positioning seat and the slide seat respectively.
9. The automatic feeding and locking structure of the blanking die as described in claim 8, characterized in that, The front end faces of the positioning seat and the slide are respectively provided with a limiting hole corresponding to each spring. Each limiting hole is in clearance fit with a spring. The bottom face of each limiting hole is provided with a rod hole corresponding to the top rod. Each rod hole is in sliding fit with a top rod.
10. The automatic feeding and locking structure of the blanking die according to claim 1, wherein The system includes a limiting plate, with both ends of the limiting plate fixed to the front ends of the two guide rails, and both ends of the positioning seat fixed to the rear ends of the two guide rails. The sliding seat is located behind the limiting plate and can abut against the limiting plate. A body is fixed on the bottom surface of the sliding seat between the two guide rails. The cylinder is located below the positioning seat and corresponds to the body. The telescopic rod of the cylinder is fixedly connected to the body.