Hardware cutting self-clamping assembly

Abstract

The utility model provides a hardware cutting self -clamping subassembly relates to metal processing clamping technical field, including work table, the top of work table is equipped with base, the both sides of base are equipped with guide slot, the inside of guide slot is equipped with guide rail, the top of guide rail is equipped with sliding block, the top one end of sliding block is equipped with movable clamp jaw, the front of movable clamp jaw is equipped with positioning clamp jaw, the between movable clamp jaw and positioning clamp jaw is equipped with feed groove, the between positioning clamp jaw main part and positioning clamp jaw main part also is equipped with synchronous transmission link, adopt movable clamp jaw and positioning clamp jaw, realized synchronous transmission link connection opposite movable clamp jaw main part and positioning clamp jaw main part, realized both sides synchronous action under single drive or control signal, avoid the workpiece inclination or clamping uneven of the partial load, movable clamp jaw is by connecting rod, movable axle and first link rod drive, positioning clamp jaw is by fixed base, fixed rod and second link rod, modularization is obvious, the clamping surface module and sensor can be quickly replaced, and maintenance is convenient.

Description

Technical Field

[0001] This utility model relates to the field of metal processing clamping structure technology, and in particular to a self-clamping component for hardware cutting. Background Technology

[0002] According to the utility model disclosed in Chinese Patent Publication No. CN218192808U, a high-efficiency and stable hardware processing cutting device relates to the field of hardware auxiliary cutting technology. It includes a base, with the centerline edge of the upper surface of the base welded to the bottom of a column. A transverse frame is welded to the top of the column, and the transverse frame has a transverse groove along the horizontal direction. A carrying plate is slidably connected to the upper surface of the base along the horizontal direction. This utility model has a cutting component at the bottom of the output end of a drive cylinder. When the drive cylinder moves the cutting component down to the cutting station, it drives a movable clamping plate towards a fixed clamping plate via a horizontal guide rod and drive mechanism. The necessary downward movement of the drive cylinder automatically moves the movable clamping plate closer to the fixed clamping plate, automatically clamping the hardware workpiece before cutting. When processing the same batch of workpieces, there is no need to repeatedly use clamps to fix the hardware workpieces, demonstrating the high efficiency and stability of the cutting action of this utility model.

[0003] The above-mentioned documents and existing technologies have the following technical problems: the existing hardware cutting process often uses manual clamping or simple spiral clamping devices, which have the following shortcomings: the clamping and repositioning speed is slow and the operation is cumbersome; the workpiece is prone to jumping or displacement during cutting, which affects the cutting accuracy and tool life; it requires manual tightening and loosening, which reduces the work efficiency; and it has poor adaptability to workpieces of different thicknesses or irregular shapes. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a self-clamping hardware cutting component.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a self-clamping hardware cutting assembly, comprising a worktable, a base on the top of the worktable, guide grooves on both sides of the base, a guide rail inside the guide groove, a slider on the top of the guide rail, a movable gripper at one end of the top of the slider, a positioning gripper on the front of the movable gripper, and a feed groove between the movable gripper and the positioning gripper.

[0006] Preferably, the outer side of the guide rail is provided with a dustproof groove and a lubricating oil channel, one end of the guide groove is provided with a limiting block, and the bottom of the slider is provided with a sliding groove, which cooperates with the guide rail.

[0007] Preferably, the movable gripper includes a connecting rod, the top of the connecting rod is provided with a movable shaft, one side of the movable shaft is provided with a first connecting rod, and one end of the first connecting rod is provided with a movable gripper body.

[0008] Preferably, the positioning gripper includes a fixed base, a fixing bolt on the top of the fixed base, a fixing rod on the top of the fixed base, a connecting block on the top of the fixing rod, a second linkage rod at one end of the connecting block, and a positioning gripper body at the other end of the second linkage rod.

[0009] Preferably, the positioning gripper body includes a mounting base, an infrared sensor is provided at the top of the mounting base, electromagnetic self-locking mechanisms are provided on both sides of the mounting base, transmission rods are provided at both ends of the mounting base, a clamping surface module is provided at one end of the electromagnetic self-locking mechanism, anti-slip teeth are provided on the inner side of the clamping surface module, and a pressure sensor is provided on the outer side of the clamping surface module.

[0010] Preferably, the positioning gripper body and the movable gripper body have the same structure, and both the positioning gripper body and the movable gripper body are electrically connected to the worktable.

[0011] Preferably, a synchronous transmission rod is provided between the movable gripper body and the movable gripper body, and a synchronous transmission rod is also provided between the positioning gripper body and the positioning gripper body.

[0012] Beneficial effects In this invention, a guide rail and a slider are used. The guide rail and slider are designed to cooperate with the groove to ensure that the movable gripper moves linearly and parallel in the guide, thereby improving the consistency of the clamping position and the cutting accuracy. The guide rail and the groove cooperate to ensure that the slider has a short force path and uniform force, reducing sway, which is crucial for subsequent stable clamping.

[0013] This invention employs an electromagnetic self-locking mechanism and a pressure sensor. The electromagnetic self-locking mechanism, in conjunction with the clamping surface module and the pressure sensor, achieves electromagnetic locking and real-time force feedback after clamping. This ensures that the clamp does not loosen when the cutting generates a reaction force, and also allows the pressure sensor to detect whether the clamping force is within a safe range, preventing workpiece deformation or slippage due to excessive tightness or insufficient clamping. The electromagnetic self-locking mechanism and the pressure sensor work together to form a force locking closed loop, achieving both mechanical self-locking and electronic monitoring and safety protection.

[0014] In this invention, movable grippers and positioning grippers are employed. A synchronous transmission rod 9 connects the opposing movable gripper body 604 and positioning gripper body 706, enabling synchronous action on both sides under a single drive or control signal. This avoids workpiece tilting or uneven clamping caused by off-center loading. The movable gripper 6 is driven by a connecting rod 601, a movable shaft 602, and a first linkage rod 603. The positioning gripper 7 is composed of a fixed base 701, a fixed rod 703, and a second linkage rod 705, exhibiting clear modularity. The clamping surface module 7065 and the sensor can be quickly replaced, facilitating maintenance. Furthermore, the infrared sensor 7062 on the positioning gripper body 706 is used to detect workpiece positioning and can automatically trigger clamping action, reducing manual operation and increasing cycle time. The fixed base 701, fixed rod 703, connecting block 704, and second linkage rod 705 provide passive clamping, fine-tuning, and synchronous coordination functions. Attached Figure Description

[0015] Figure 1 This is an isometric view of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a side view of the present invention; Figure 4 This is a schematic diagram of the positioning gripper of this utility model; Figure 5 This is a schematic diagram of the structure of the movable gripper of this utility model.

[0016] Legend: 1. Worktable; 2. Base; 3. Guide groove; 301. Limiting block; 4. Guide rail; 5. Slider; 501. Slide groove; 6. Movable gripper; 601. Connecting rod; 602. Movable shaft; 603. First linkage rod; 604. Movable gripper body; 7. Positioning gripper; 701. Fixed seat; 702. Fixing bolt; 703. Fixed rod; 704. Connecting block; 705. Second linkage rod; 706. Positioning gripper body; 7061. Mounting base; 7062. Infrared sensor; 7063. Electromagnetic self-locking mechanism; 7064. Transmission rod; 7065. Clamping surface module; 7066. Anti-slip teeth; 7067. Pressure sensor; 8. Feed groove; 9. Synchronous transmission rod. Detailed Implementation

[0017] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0018] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1: Reference Figure 1-5This utility model provides a self-clamping assembly for metal cutting, including a worktable 1, a base 2 fixedly mounted on the top of the worktable 1, guide grooves 3 on both sides of the base 2, a guide rail 4 inside the guide grooves 3, a slider 5 on the top of the guide rail 4, a movable gripper 6 at one end of the top of the slider 5, a positioning gripper 7 on the front of the movable gripper 6, a feed groove 8 between the movable gripper 6 and the positioning gripper 7, a dustproof groove and a lubrication channel on the outer side of the guide rail 4, a limiting block 301 fixedly mounted on one end of the guide groove 3, a sliding groove 501 at the bottom of the slider 5 that cooperates with the guide rail 4, the movable gripper 6 including a vertically mounted connecting rod 601, a movable shaft 602 at the top of the connecting rod 601, and a first connecting rod on one side of the movable shaft 602. 603, one end of the first linkage 603 is provided with a movable gripper body 604, which is electrically controlled and controlled by a controller. The positioning gripper 7 includes a fixed base 701, a fixing bolt 702 on the top of the fixed base 701, a fixing rod 703 fixed vertically on the top of the fixed base 701, a connecting block 704 fixed on the top of the fixing rod 703, a second linkage 705 horizontally on one end of the connecting block 704, and a positioning gripper body 706 on the other end of the second linkage 705. The positioning gripper body 706 includes a mounting base 7061, an infrared sensor 7062 on the top of the mounting base 7061, and electromagnetic self-locking mechanisms 7063 on both sides of the mounting base 7061. The device has transmission rods 7064 at both ends, and a clamping module 7065 at one end of the electromagnetic self-locking mechanism 7063. The inner side of the clamping module 7065 has anti-slip teeth 7066, and the outer side of the clamping module 7065 has a pressure sensor 7067. The infrared sensor 7062, electromagnetic self-locking mechanism 7063, and pressure sensor 7067 are all connected to and controlled by the controller. The positioning gripper body 706 has the same structure as the movable gripper body 604. Both the positioning gripper body 706 and the movable gripper body 604 are electrically connected to the controller in the workbench 1. A synchronous transmission rod 9 is provided between the movable gripper bodies 604, and a synchronous transmission rod is also provided between the positioning gripper body 706 and the positioning gripper body 706. Rod 9, Workflow: Initial preparation, reset or standby: The system is powered on, and the controller in workbench 1 enters standby mode; slider 5 is in the loading position, and slide 501 and guide rail 4 are in a well-lubricated state; electromagnetic self-locking mechanism 7063 is in a de-energized or unlocked state, and clamping module 7065 and pressure sensor 7067 are in the no-load detection baseline; Loading and feeding, manual or conveyor: The workpiece is fed by the conveyor or manually along the feeding direction into the loading gap between movable gripper 6 and positioning gripper 7 until it enters the detection area; Position detection, infrared trigger: The infrared sensor 7062 installed on the positioning gripper body 706 detects the workpiece position signal and sends the loading position signal to the controller; if no signal is detected, it maintains a waiting state or triggers a timeout alarm;Driven clamping, synchronous action: After receiving the loading position signal, the controller drives the first linkage 603 to move the movable gripper body 604 forward along the slider 5. At the same time, it drives the second linkage 705 to cooperate with the positioning mechanism for fine adjustment, and ensures that the left and right gripper bodies approach the workpiece synchronously through the synchronous transmission rod 9. The slider 5 moves to the predetermined clamping stroke. Contact detection and force closed loop: When the clamping surface module 7065 contacts the workpiece, the pressure sensor 7067 starts to collect the contact pressure. The controller judges whether the clamping force reaches the set threshold based on the feedback from the pressure sensor 7067. When the pressure is lower than the minimum threshold, the clamping is insufficient, and the controller continues to perform fine clamping. The feed continues until the threshold or maximum stroke is reached. When the pressure reaches or approaches the set value, the controller sends an action command to the electromagnetic self-locking mechanism 7063, energizing and locking it to maintain clamping. If the pressure exceeds the upper limit, the controller immediately stops the feed and sounds an alarm, releasing the gripper in the reverse direction to avoid damaging the workpiece. Clamping confirmation and cutting start: After the electromagnetic self-locking mechanism 7063 confirms engagement and the pressure sensor 7067 reads within the safe range, the controller sends a start-permit signal to the cutting spindle or tool, and the cutting program begins. At this time, the synchronous transmission rod 9 ensures the balance of clamping forces on both sides, and the guide rail 4 and the slide 501 ensure the stability of the gripper. Dynamic; Cutting process monitoring: During the cutting process, the system continuously monitors the status of pressure sensor 7067 and infrared sensor 7062. When an abnormality occurs, such as a sudden change in clamping force, workpiece displacement, or sensor failure, the controller immediately triggers a stop to cut and enters a safe state, while simultaneously releasing the electromagnetic self-locking mechanism and triggering an alarm. Cutting completion and release: Upon receiving the cutting completion signal, the controller first ensures that the cutting spindle stops or is in a safe state, then releases the electromagnetic self-locking mechanism 7063 to release the clamp from self-locking; the first linkage rod 603 and slider 5 are driven to retract to the loading position, the slide groove 501 and the limit block 301 are positioned and reset, and the workpiece can be carried away by the conveyor belt or Removed by operator; Cycle and abnormal handling: The system enters the next feeding cycle. If a timeout, pressure abnormality, sensor failure, or limit failure occurs in any step, the controller executes the preset abnormal handling procedure. If the infrared sensor 7062 does not detect the workpiece after the feeding timeout, it will stop the cycle and sound an alarm. If the pressure sensor 7067 detects a value below the threshold and the slider 5 has reached its maximum stroke, it will sound an alarm and refuse to cut to prevent poor clamping. If the pressure sensor 7067 detects a value exceeding the upper limit, it will immediately reverse and release the workpiece and sound an alarm to prevent workpiece deformation. If any limit or guide rail 4 malfunctions, the machine will be mechanically forced to stop and the electromagnetic self-locking mechanism will be locked, requiring manual inspection. Specific Implementation Example 2: Reference Figure 1An eccentric locking mechanism is installed between the slider 5 and the base 2. By rotating the eccentric shaft, the slider 5 can be slightly displaced in the vertical direction relative to the guide rail 4, thereby generating clamping force. The eccentric shaft is connected to the handle or servo motor through the locking rod. A return spring and a compression spring assembly are installed between the slider 5 and the base 2 to provide preload in the initial position of the eccentric shaft and absorb energy during ultra-thick materials or impacts, ensuring a smooth clamping force curve. A quick-release mechanism is installed at the eccentric shaft or handle position. When quick release is required, the self-locking of the eccentric shaft is released by moving the release rod. The eccentric shaft returns to its original position under the action of the spring, and the slider 5 moves backward to release the workpiece. The release mechanism is designed to be operated with one hand or controlled by electricity or pneumatics. The side of the base 2 is provided with a limit pin and a sensor mounting position for detecting the clamping and releasing positions of the slider 5, which facilitates linkage with the host control system.

[0021] In summary: By using guide rail 4 and slider 5, the guide rail 4 and slider 5 are connected to slide groove 501 in the guide groove 3 to ensure that the movable gripper 6 moves linearly and parallel in the guide, thereby improving the consistency of the clamping position and the cutting accuracy. The cooperation between guide rail 4 and slide groove 501 ensures that the force path of slider 5 is short and the force is uniform, reducing sway, which is crucial for subsequent stable clamping. By employing an electromagnetic self-locking mechanism 7063 and a pressure sensor 7067, the electromagnetic self-locking mechanism 7063, in conjunction with the clamping surface module 7065 and the pressure sensor 7067, achieves electromagnetic locking and real-time force feedback after clamping. This ensures that the clamp does not loosen when the cutting generates reaction force, and also allows the pressure sensor 7067 to detect whether the clamping force is within a safe range, preventing workpiece deformation or slippage due to excessive tightness or insufficient clamping. The electromagnetic self-locking mechanism 7063 and the pressure sensor 7067 work together to form a force locking closed loop, achieving both mechanical self-locking and electronic monitoring and safety protection. 3. The use of movable grippers and positioning grippers enables the synchronous transmission rod 9 to connect the opposing movable gripper body 604 and positioning gripper body 706, achieving synchronous action on both sides under a single drive or control signal. This avoids workpiece tilting or uneven clamping caused by off-center loading. The movable gripper 6 is driven by the connecting rod 601, movable shaft 602, and first linkage rod 603. The positioning gripper 7 is composed of a fixed base 701, fixed rod 703, and second linkage rod 705, exhibiting clear modularity. The clamping surface module 7065 and the sensor can be quickly replaced, facilitating maintenance. Furthermore, the infrared sensor 7062 on the positioning gripper body 706 is used to detect workpiece positioning and can automatically trigger clamping action, reducing manual operation and increasing cycle time. The fixed base 701, fixed rod 703, connecting block 704, and second linkage rod 705 provide passive clamping, fine-tuning, and synchronous coordination functions.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A self-clamping hardware cutting assembly, comprising a worktable (1), characterized in that: The workbench (1) has a base (2) on top, guide grooves (3) on both sides of the base (2), a guide rail (4) inside the guide groove (3), a slider (5) on top of the guide rail (4), a movable gripper (6) on one end of the top of the slider (5), a positioning gripper (7) on the front of the movable gripper (6), and a feed groove (8) between the movable gripper (6) and the positioning gripper (7).

2. The self-clamping hardware cutting assembly according to claim 1, characterized in that: The outer side of the guide rail (4) is provided with a dustproof groove and a lubricating oil channel. One end of the guide groove (3) is provided with a limiting block (301), and the bottom of the slider (5) is provided with a sliding groove (501). The sliding groove (501) cooperates with the guide rail (4).

3. The self-clamping hardware cutting assembly according to claim 1, characterized in that: The movable gripper (6) includes a connecting rod (601), the top of the connecting rod (601) is provided with a movable shaft (602), one side of the movable shaft (602) is provided with a first connecting rod (603), and one end of the first connecting rod (603) is provided with a movable gripper body (604).

4. The self-clamping hardware cutting assembly according to claim 1, characterized in that: The positioning gripper (7) includes a fixed base (701), a fixing bolt (702) is provided on the top of the fixed base (701), a fixing rod (703) is provided on the top of the fixed base (701), a connecting block (704) is provided on the top of the fixing rod (703), a second linkage rod (705) is provided at one end of the connecting block (704), and a positioning gripper body (706) is provided at the other end of the second linkage rod (705).

5. A self-clamping hardware cutting assembly according to claim 4, characterized in that: The positioning gripper body (706) includes a mounting base (7061), an infrared sensor (7062) is provided at the top of the mounting base (7061), an electromagnetic self-locking mechanism (7063) is provided on both sides of the mounting base (7061), a transmission rod (7064) is provided at both ends of the mounting base (7061), a clamping surface module (7065) is provided at one end of the electromagnetic self-locking mechanism (7063), an anti-slip tooth pattern (7066) is provided on the inner side of the clamping surface module (7065), and a pressure sensor (7067) is provided on the outer side of the clamping surface module (7065).

6. A self-clamping hardware cutting assembly according to claim 5, characterized in that: The positioning gripper body (706) and the movable gripper body (604) have the same structure. Both the positioning gripper body (706) and the movable gripper body (604) are electrically connected to the controller in the worktable (1).

7. A self-clamping hardware cutting assembly according to claim 6, characterized in that: A synchronous transmission rod (9) is provided between the movable gripper body (604) and the positioning gripper body (706), and a synchronous transmission rod (9) is also provided between the positioning gripper body (706) and the positioning gripper body (706).

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