Punch safety hand electromagnetic material clamping device

Abstract

This application discloses a safety hand electromagnetic gripper for punch presses, comprising a lithium battery power supply module, an electromagnet, a control switch, a wireless transmitter module, a wireless receiver module, and an LED fill light. The lithium battery power supply module is electrically connected to the electromagnet, the wireless transmitter module, and the LED fill light via the control switch. The wireless receiver module is linked with the punch press control system. This invention achieves safe adsorption and gripping of iron parts through the electromagnet, and achieves safety interlocking between the gripping operation and the punch press through the wireless transceiver module. The LED fill light adapts to dim working environments. The interchangeable electromagnets with different attraction forces are suitable for iron parts of various materials. The structure is compact and highly adaptable, and it is widely applicable to punch press processing, hardware manufacturing, and other scenarios, effectively improving the safety and efficiency of gripping operations.

Description

Technical Field

[0001] This invention relates to the field of punch press auxiliary equipment technology, specifically to a punch press safety hand electromagnetic clamp material handling device. Background Technology

[0002] This invention relates to the field of auxiliary safety equipment for punch press processing. Punch presses, as core equipment for metal sheet stamping, are widely used in industries such as hardware manufacturing, automotive parts processing, and mechanical parts production. The workpiece unloading process after stamping is a crucial step determining the safety and efficiency of the production line.

[0003] Currently, the mainstream material handling methods in the stamping industry fall into two categories, both of which have unavoidable technical defects: Firstly, manual material handling is the mainstream model for small and medium-sized enterprises. Operators use simple tools to reach into the stamping area to pick up materials. Although this method is low-cost and highly flexible, it requires close contact with the stamping die area. This can easily lead to serious safety accidents due to accidental triggering of the press or equipment failure. In addition, manual operation is prone to fatigue, and the material handling cycle is unstable, which cannot meet the needs of large-scale continuous production.

[0004] Secondly, automated mechanical material handling devices use multi-axis robotic arms and pneumatic grippers to automatically handle materials, reducing the risk of manual operation. However, the equipment has a complex structure and high procurement and debugging costs. It needs to be customized and adapted to the punch press and workpiece, making it difficult to meet the flexible production needs of multiple varieties and small batches. At the same time, rigid grippers are prone to damaging thin and irregularly shaped workpieces, and most of them lack hard interlock protection with the punch press, so there is still a safety hazard of stroke interference.

[0005] In summary, existing punch press material handling technologies are unable to simultaneously meet the comprehensive requirements of stamping operations for safety, efficiency, versatility, and low cost, and have obvious technical shortcomings. Summary of the Invention

[0006] The present invention aims to solve one of the technical problems existing in the prior art.

[0007] This application provides a punch press safety hand electromagnetic gripper for picking up materials, including a lithium battery power supply module, an electromagnet, a control switch, and a device housing. The device housing includes a gripping section and a picking section. The lithium battery power supply module and the control switch are disposed in the gripping section. The electromagnet is fixed at the far end of the picking section. The output terminal of the control switch is electrically connected to the electromagnet, and the input terminal of the control switch is electrically connected to the lithium battery power supply module.

[0008] Furthermore, it also includes a wireless transmitting module and a wireless receiving module. The wireless transmitting module is electrically connected to the output terminal of the control switch, and the wireless receiving module is electrically connected to the control system of the external punch press. The wireless transmitting module and the wireless receiving module are connected through wireless signal communication. When the electromagnet and the wireless transmitting module are energized, the wireless receiving module receives the signal and triggers the control system of the external punch press to perform a power-off action.

[0009] Furthermore, it also includes several LED fill lights, which are electrically connected to the output of the control switch.

[0010] Furthermore, there are eight LED supplementary lights, which are evenly spaced around the electromagnet in the material handling section.

[0011] Furthermore, the two ends of the material taking section are the material taking end and the connecting end, respectively. The material taking end is a hollow shell with an open bottom and an interference fit for inserting an installation block. The connecting end is integrally formed and fixed to the holding section. The installation block has a groove adapted to the LED fill light and electromagnet. The material taking section has a wire groove.

[0012] Furthermore, the gripping section includes an upper shell, a lower shell, a handle, and a quick-release assembly. The lithium battery power supply module and control switch are installed in the internal cavity formed when the upper shell and the lower shell are closed. The material taking section is integrally formed on the upper shell or the lower shell. The handle is hollow and movably sleeved on the outside of the upper shell and the lower shell, and is detachably connected to the upper shell and the lower shell through the quick-release assembly.

[0013] Furthermore, the quick-release assembly includes a circumferential limiting unit and a radial limiting unit, which work together to restrict the circumferential and axial degrees of freedom of the handle that is fitted onto the closed lower and upper housings.

[0014] Furthermore, the circumferential limiting unit includes a pair of U-shaped grooves, several floating engaging parts, and a pair of circumferential limiting blocks. The pair of U-shaped grooves are disposed on the outer walls of the upper and lower housings, and include an entry section, a disengagement section, and a locking section. The entry section and the disengagement section are parallel to the handle axis. The two ends of the locking section are connected to the inner ends of the entry section and the disengagement section and extend along the circumferential direction of the handle. The pair of circumferential limiting blocks are symmetrically fixed on the inner circumferential wall of the handle. Each floating engaging part is floatingly installed on the side wall of each locking section. An engaging groove for engaging the circumferential limiting block is formed between two adjacent floating engaging parts.

[0015] Furthermore, the floating engagement component includes an engagement plate, a pair of floating rods, a pair of floating grooves, a pair of springs, and a pair of locking blocks. The pair of floating grooves are symmetrically opened on the side wall of the locking section. The pair of floating rods are slidably installed in each floating groove. The pair of springs are respectively set in each floating groove. The engagement plate is movably installed in the locking section and its two ends on one side are fixedly connected to the outer ends of the pair of floating rods. The pair of locking blocks are fixed at both ends of the other side wall of the engagement plate. The pair of locking blocks are inclined towards the side wall of the entry section.

[0016] Furthermore, the radial limiting unit includes a pair of limiting arc grooves and a pair of limiting sliders. The pair of limiting arc grooves are symmetrically opened on the outer walls of the upper and lower housings and their two ends are connected to the adjacent locking sections. The pair of limiting sliders are symmetrically fixed on the inner peripheral wall of the handle. When the circumferential limiting block is engaged by the floating engagement piece, the pair of limiting sliders are located in the corresponding limiting arc groove. When the circumferential limiting block disengages from the floating engagement piece and enters the corresponding disengagement section, it enters the adjacent locking section and the corresponding entry section.

[0017] The beneficial effects of this invention are as follows: 1. By setting up an electrical connection structure between the lithium battery power supply module, the control switch, and the electromagnet, the lithium battery power supply module provides synchronous power to the electromagnet when the control switch is turned on. The electromagnet generates a stable magnetic force to attract iron workpieces, replacing manual entry into the stamping area to pick up materials. This fundamentally avoids the safety risks of manual material handling. At the same time, the electromagnet with the corresponding attraction force can be replaced according to the material and weight of the workpiece, adapting to the material handling needs of iron parts of different materials such as cold-rolled steel, hot-rolled steel, and cast iron, greatly improving the versatility and adaptability of the device.

[0018] 2. By setting up a wireless transmitting module electrically connected to the output of the control switch and a wireless receiving module linked with the external punch press control system, when the control switch is turned on, the wireless transmitting module and the electromagnet are synchronously energized and transmit control signals. After receiving the signal, the wireless receiving module immediately triggers the punch press control system to perform a power-off locking action, realizing a safe interlock between the material handling operation and the punch press operation, forming a safety closed loop for the entire material handling process, completely avoiding safety accidents caused by the punch press being accidentally started during the material handling process, and significantly improving the safety protection performance of the material handling operation.

[0019] 3. Eight LED supplementary lights are installed at even intervals around the electromagnet. The LED supplementary lights are electrically connected to the output of the control switch. When the control switch is turned on, the LED supplementary lights and the electromagnet light up synchronously, providing uniform supplementary lighting without blind spots in the material picking area. This solves the problem of blurred vision when picking materials in dim working environments, avoids material picking deviation and operation errors caused by poor vision, and improves the accuracy of material picking operations.

[0020] 4. Through the cooperative structure of the upper shell, lower shell, handle, and quick-release assembly in the grip section, the closed cavity formed by the upper and lower shells accommodates the lithium battery power supply module and control switch, achieving dust and oil protection for electrical components. The circumferential and radial limiting units of the quick-release assembly cooperate with each other to simultaneously limit the circumferential rotation and axial movement freedom of the handle, realizing tool-free quick disassembly and assembly of the handle. This not only improves the protective performance and maintenance convenience of the device, but also adapts to the gripping needs of different operators, improving operating comfort.

[0021] 5. The hollow shell structure of the material handling section and the interference fit of the mounting block, with mounting slots on the mounting block adapted to the electromagnet and LED supplementary light, enable precise positioning and installation of the electromagnet and LED supplementary light. The wire groove on the material handling section provides a regular laying channel for the connecting wires, avoiding circuit failures caused by exposed wires being squeezed and worn, and effectively improving the structural stability and operational reliability of the device. Attached Figure Description

[0022] Figure 1 This is a circuit configuration diagram of the electromagnetic clamping device for the punch press safety hand in the embodiments of this application; Figure 2 This is a perspective view of the electromagnetic clamping device for the safety hand of a punch press in the embodiments of this application; Figure 3 This is a perspective view (without grip) of the electromagnetic chuck for a punch press safety hand in an embodiment of this application. Figure 4 This is a perspective view of the grip in an embodiment of this application; Figure 5 This is a perspective view of the electromagnetic gripper for a punch press safety hand in an embodiment of this application (the grip is longitudinally cut in half). Figure 6 This is a perspective view of the electromagnetic chuck for a punch press safety hand in an embodiment of this application (without a handle but retaining the circumferential limiting block and the limiting slider). Figure 7 for Figure 6 A magnified schematic diagram of the structure at point A in the middle.

[0023] Figure Labels 1-Lithium battery power supply module, 2-Electromagnet, 3-Control switch, 4-Grip section, 41-Upper shell, 42-Lower shell, 43-Grip, 5-Material picking section, 51-Material picking end, 52-Connecting end, 53-Mounting block, 54-Wire groove, 6-Wireless transmitting module, 7-Wireless receiving module, 8-LED supplementary light, 9-Circumferential limiting unit, 91-Floating locking component, 911-Locking plate, 912-Floating rod, 913-Floating groove, 914-Spring, 915-Locking block, 92-Circumferential limiting block, 93-Entry section, 94-Disengagement section, 95-Locking section, 96-Locking groove, 10-Radial limiting unit, 101-Limiting arc groove, 102-Limiting slider. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0025] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0026] The electromagnetic gripper for punch press safety provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0027] Example 1: This application provides a punch press safety hand electromagnetic gripper for picking up materials, including a lithium battery power supply module 1, an electromagnet 2, a control switch 3, and a device housing. The device housing includes a gripping section 4 and a picking section 5. The lithium battery power supply module 1 and the control switch 3 are disposed in the gripping section 4. The electromagnet 2 is fixed at the far end of the picking section 5. The output terminal of the control switch 3 is electrically connected to the electromagnet 2, and the input terminal of the control switch 3 is electrically connected to the lithium battery power supply module 1.

[0028] In this embodiment of the application, a wireless transmitting module 6 and a wireless receiving module 7 are also included. The wireless transmitting module 6 is electrically connected to the output terminal of the control switch 3, and the wireless receiving module 7 is electrically connected to the control system of the external punch press. The wireless transmitting module 6 and the wireless receiving module 7 are connected by wireless signal communication. When the electromagnet 2 and the wireless transmitting module 6 are energized, the wireless receiving module 7 receives a signal to trigger the control system of the external punch press to perform a power-off action.

[0029] like Figures 1 to 2 As shown, due to the above structure, the grip section 4 serves as the operator's handheld operating end, integrating the lithium battery power supply module 1 and the control switch 3 inside, which meets the portability requirements of handheld operation; the electromagnet 2 fixed at the far end of the material picking section 5, together with the control switch 3 and the lithium battery power supply module 1 in the grip section 4, forms a complete power supply circuit to ensure the accurate transmission of control commands.

[0030] In use, the operator holds the grip section 4, aligns the electromagnet 2 at the far end of the material handling section 5 with the iron workpiece processed by the punch press, and presses the control switch 3 inside the grip section 4. The control switch 3 is turned on, and the lithium battery power supply module 1 supplies power to the electromagnet 2 through the control switch 3. After being energized, the electromagnet 2 generates a stable electromagnetic attraction, attracting the iron workpiece to be handled, realizing the clamping and transfer of the workpiece. This replaces manual labor by directly reaching into the punch press working area to handle the material, fundamentally avoiding the safety risks of manual handling. At the same time, the wireless transmitter module 6, which is electrically connected to the output of the control switch 3, is simultaneously energized and transmits wireless control signals in real time. The wireless receiver module, which is electrically connected to the punch press control system, also receives the signal. Upon receiving the signal, 7 immediately outputs a power-off control command to the punch press control system, triggering the punch press control system to execute a power-off lock-up action. This ensures that the punch press cannot start the stamping action during the entire material handling process, achieving a safety interlock between the material handling operation and the punch press operation, and completely avoiding safety accidents caused by accidental start of the punch press during the material handling process. When the operator releases the control switch 3, or after the workpiece is transferred to the designated position, the control switch 3 is disconnected, the electromagnet 2 and the wireless transmission module 6 are simultaneously de-energized, the electromagnetic attraction of the electromagnet 2 disappears, the workpiece placement is completed, the wireless transmission module 6 stops transmitting signals, the power-off lock-up state of the punch press control system is released, and the next processing cycle can begin.

[0031] The entire operation process forms a safe closed loop of "switch on - electromagnet 2 adsorbs and picks up material - wireless signal synchronous transmission - punch press power failure interlock - switch off - power failure and material release - punch press lock release".

[0032] Example 2: In this embodiment, in addition to the structural features of the aforementioned embodiments, it also includes a plurality of LED fill lights 8, which are electrically connected to the output terminal of the control switch 3.

[0033] In this embodiment of the application, there are eight LED supplementary lights 8, which are evenly spaced around the electromagnet 2 in the material handling section 5.

[0034] In this embodiment of the application, the two ends of the material taking section 5 are the material taking end 51 and the connecting end 52, respectively. The material taking end 51 is a hollow shell with an open bottom and an interference fit is inserted therein, and the connecting end 52 is integrally formed and fixedly connected to the holding section 4. The mounting block 53 has a groove adapted to the LED fill light and the electromagnet 2. The material taking section 5 has a wire groove 54.

[0035] like Figures 2 to 7As shown, due to the above structure, the slots on the mounting block 53 are adapted to the external dimensions of the electromagnet 2 and the eight LED fill lights 8, respectively, realizing the precise positioning and installation of the electromagnet 2 and the LED fill lights 8, ensuring that the eight LED fill lights 8 are evenly spaced around the electromagnet 2 without installation deviation; the wire grooves 54 on the material picking section 5 provide a regular laying channel for the wires connecting the control switch 3 to the electromagnet 2 and the LED fill lights 8, avoiding circuit failures caused by exposed wires being squeezed or worn, and improving the stability and service life of the device.

[0036] When performing material handling operations, pressing control switch 3 activates the lithium battery power supply module 1, which powers the electromagnet 2, wireless transmitter module 6, and simultaneously eight LED fill lights 8. These LED fill lights illuminate synchronously with the electromagnet 2, projecting light evenly around it without any blind spots. This allows for clear illumination of the workpiece's position and outline even in dimly lit, backlit, or low-contrast environments, assisting operators in accurately aligning the workpiece and preventing material handling deviations, workpiece loss, or operational errors caused by blurred vision. Simultaneously, the evenly distributed fill light design avoids shadow interference from unilateral lighting, further enhancing the accuracy and safety of material handling operations. When control switch 3 is deactivated, the LED fill lights 8, electromagnet 2, and wireless transmitter module 6 simultaneously de-energize and extinguish, achieving synchronized start and stop of the fill light function and material handling action.

[0037] Example 3: In this embodiment, in addition to the structural features of the aforementioned embodiments, the grip section 4 includes an upper housing 41, a lower housing 42, a handle 43, and a quick-release assembly. The lithium battery power supply module 1 and the control switch 3 are installed in the internal cavity formed when the upper housing 41 and the lower housing 42 are closed. The material taking section 5 is integrally formed on the upper housing 41 or the lower housing 42. The handle 43 is hollow and movably sleeved on the outside of the upper housing 41 and the lower housing 42, and is detachably connected to the upper housing 41 and the lower housing 42 through the quick-release assembly.

[0038] In this embodiment of the application, the quick-release assembly includes a circumferential limiting unit 9 and a radial limiting unit 10. The circumferential limiting unit 9 and the radial limiting unit 10 cooperate with each other to restrict the circumferential and axial degrees of freedom of the handle 43, which is sleeved on the closed lower housing 42 and upper housing 41.

[0039] like Figures 2 to 7As shown, due to the above structure, when it is necessary to replace the handle 43 or to inspect and maintain the electrical components inside the grip section 4, it is only necessary to release the limiting state of the circumferential limiting unit 9 and the radial limiting unit 10, and the handle 43 can be quickly pulled out from the outside of the upper and lower housings 42 without the need for special tools. This achieves tool-free quick disassembly and assembly of the handle 43, which greatly improves the convenience of device maintenance and the efficiency of parts replacement, and is suitable for the continuous production operation requirements of punch presses.

[0040] Example 4: In this embodiment, in addition to the structural features of the aforementioned embodiment, the circumferential limiting unit 9 includes a pair of U-shaped grooves, a plurality of floating engaging parts 91, and a pair of circumferential limiting blocks 92. The pair of U-shaped grooves are disposed on the outer walls of the upper housing 41 and the lower housing 42, and include an entry section 93, a disengagement section 94, and a locking section 95. The entry section 93 and the disengagement section 94 are parallel to the axis of the grip 43. The two ends of the locking section 95 are connected to the inner ends of the entry section 93 and the disengagement section 94 and extend circumferentially along the grip 43. The pair of circumferential limiting blocks 92 are symmetrically fixed on the inner circumferential wall of the grip 43. Each floating engaging part 91 is floatingly installed on the side wall of each locking part 95. An engaging groove 96 for engaging the circumferential limiting block 92 is formed between two adjacent floating engaging parts 91.

[0041] like Figures 2 to 7 As shown, due to the aforementioned structure, when installing the handle 43, the circumferential limiting block 92 on the inner circumferential wall of the handle 43 is aligned with the outer end of the entry section 93 of the U-shaped groove. The handle 43 is then pushed inward along its axial direction, and the circumferential limiting block 92 slides parallel to the entry section 93 until it connects with the locking section 95. At this point, the axial displacement of the circumferential limiting block 92 is limited by the end of the locking section 95. Subsequently, the handle 43 is rotated, causing the circumferential limiting block 92 to slide circumferentially along the locking section 95. During the sliding process, the circumferential limiting block 92 presses against the corresponding... The floating locking component 91 is positioned so that it retracts radially to provide sliding space for the circumferential limiting block 92. When the circumferential limiting block 92 slides into the locking groove 96 between two adjacent floating locking components 91, the floating locking component 91 resets and forms a bidirectional limiting on both sides of the circumferential limiting block 92, preventing the circumferential limiting block 92 from continuing to slide circumferentially, thus completely restricting the circumferential rotational freedom of the grip 43. At the same time, it works with the radial limiting unit 10 to restrict the axial freedom of the grip 43, thus completing the quick locking installation of the grip 43. When disassembling the handle 43, continue to rotate the handle 43 in the same direction. The circumferential limiting block 92 will press the floating engaging part 91 and slide out from the engaging groove 96. It will slide along the locking section 95 to the point of communication with the disengagement section 94. Then, pull the handle 43 outward along the axis of the handle 43. The circumferential limiting block 92 will slide out parallel along the disengagement section 94, thus completing the quick disassembly of the handle 43.

[0042] Example 5: In this embodiment, in addition to the structural features of the aforementioned embodiments, the floating engaging member 91 includes an engaging plate 91, a pair of floating rods 92, a pair of floating grooves 93, a pair of springs 94, and a pair of engaging blocks 95. The pair of floating grooves 93 are symmetrically opened on the side wall of the locking section 95. The pair of floating rods 92 are slidably installed in each of the floating grooves 93. The pair of springs 94 are respectively disposed in each of the floating grooves 93. The engaging plate 91 is movably installed in the locking section 95 and its two ends on one side are fixedly connected to the outer ends of the pair of floating rods 92. The pair of engaging blocks 95 are fixedly disposed at both ends of the other side wall of the engaging plate 91. The pair of engaging blocks are inclined toward the side wall of the entry section 93.

[0043] like Figures 2 to 7 As shown, due to the aforementioned structure, when installing the grip 43, the grip 43 rotates relative to the upper housing 41 and the lower housing 42, causing the circumferential limiting block 92 to slide circumferentially along the locking section 95 toward the engaging groove 96. It first contacts the inclined sidewall of the locking block 95 near the entry section 93. As the circumferential limiting block 92 continues to slide, the inclined sidewall decomposes the circumferential thrust of the circumferential limiting block 92 into a radial thrust, pushing the engaging plate 91 radially toward the sidewall of the locking section 95. The engaging plate 91 drives the floating rod 92 to slide inward along the floating groove 93, simultaneously compressing the spring 94 within the floating groove 93, thus limiting the circumferential movement. The sliding of the position block 92 creates space; when the circumferential limiting block 92 slides past the locking block 95 and enters the locking groove 96 between two adjacent locking plates 91, the radial thrust of the circumferential limiting block 92 on the locking plate 91 disappears, the compressed spring 94 resets, and pushes the floating rod 92 and the locking plate 91 to rebound radially. The locking blocks 95 at both ends of the pair of locking plates 91 form a rigid limit on both sides of the circumferential limiting block 92, preventing the circumferential limiting block 92 from sliding circumferentially on its own, thus achieving stable locking of the circumferential limiting block 92 and ensuring that the handle 43 will not rotate on its own due to vibration or operating torque during operation, and the locking state is safe and reliable. When it is necessary to disassemble the handle 43 and continue to rotate the handle 43, the circumferential limiting block 92 applies a reverse circumferential thrust to a pair of locking blocks 95 that are close to the disengagement section 94, and pushes the locking plate 91 to retract radially again. The circumferential limiting block 92 can then slide out of the locking groove 96, thus releasing the locking state.

[0044] Example 6: In this embodiment, in addition to the structural features of the aforementioned embodiments, the radial limiting unit 10 includes a pair of limiting arc grooves 101 and a pair of limiting sliders 102. The pair of limiting arc grooves 101 are symmetrically opened on the outer walls of the upper housing 41 and the lower housing 42 and their two ends are connected to the adjacent locking section 95. The pair of limiting sliders 102 are symmetrically fixed on the inner peripheral wall of the grip 43. When the circumferential limiting block 92 is engaged by the floating engaging member 91, the pair of limiting sliders 102 are located in the corresponding limiting arc groove. When the circumferential limiting block 92 disengages from the floating engaging member 91 and enters the corresponding disengagement section 94, it enters the adjacent locking section 95 and the corresponding entry section 93.

[0045] like Figures 2 to 7 As shown, due to the aforementioned structure, when installing the grip 43, the circumferential limiting block 92 on the inner circumferential wall of the grip 43 is aligned with the entry section 93 of the U-shaped groove, and the limiting slider 102 is aligned with the corresponding disengagement section 94 of the entry section 93. The grip 43 is pushed inward along the axial direction of the grip 43, and the circumferential limiting block 92 slides along the entry section 93 to the end of the locking section 95. Simultaneously, the limiting slider 102 slides axially from the disengagement section 94 into the other end of the corresponding locking section 95. At this time, the axial end face of the limiting slider 102 abuts against the side wall of the locking section 95, thus limiting the inward pushing stroke of the grip 43 and preventing the grip 43 from... The handle 43 is then rotated, causing the circumferential limiting block 92 to slide circumferentially along the locking section 95. Simultaneously, the limiting slider 102 slides circumferentially along the limiting arc groove 101. When the circumferential limiting block 92 slides into the engaging groove 96 between adjacent floating engaging parts 91 and completes circumferential locking, the limiting slider 102 slides into the corresponding limiting arc groove 101. The two side walls of the limiting arc groove 101 form a bidirectional limiting on both sides of the axial direction of the limiting slider 102, completely restricting the axial movement freedom of the handle 43. Combined with the limitation of the circumferential freedom by the circumferential limiting unit 9, the handle 43 is locked with full freedom in both the circumferential and axial directions. When disassembling the handle 43, continue to rotate the handle 43. The circumferential limiting block 92 slides out from the engaging groove 96 and slides along the locking section 95 to the point where it connects with the disengagement section 94. At the same time, the synchronous limiting slider 102 slides out from the limiting arc groove 101 and enters the connection between the adjacent locking section 95 and the entry section 93. At this time, the axial limitation of the limiting arc groove 101 on the limiting slider 102 is released. Pull the handle 43 outward along the axis of the handle 43. The circumferential limiting block 92 slides out along the disengagement section 94, and the synchronous limiting slider 102 slides out along the locking section 95. The handle 43 can then be quickly disassembled.

[0046] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0047] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A safety hand electromagnetic gripper for punch presses, characterized in that, The device includes a lithium battery power supply module, an electromagnet, a control switch, and a housing. The housing includes a gripping section and a material picking section. The lithium battery power supply module and the control switch are disposed in the gripping section. The electromagnet is fixed at the far end of the material picking section. The output terminal of the control switch is electrically connected to the electromagnet, and the input terminal of the control switch is electrically connected to the lithium battery power supply module.

2. The electromagnetic gripper for a punch press safety hand according to claim 1, characterized in that, It also includes a wireless transmitting module and a wireless receiving module. The wireless transmitting module is electrically connected to the output terminal of the control switch, and the wireless receiving module is electrically connected to the control system of the external punch press. The wireless transmitting module and the wireless receiving module are connected by wireless signal communication. When the electromagnet and the wireless transmitting module are energized, the wireless receiving module receives a signal to trigger the control system of the external punch press to perform a power-off action.

3. The electromagnetic gripper for a punch press safety hand according to claim 1, characterized in that, It also includes several LED fill lights, which are electrically connected to the output terminal of the control switch.

4. The electromagnetic gripper for a punch press safety hand according to claim 3, characterized in that, The LED supplementary lights are eight in number and are evenly spaced around the electromagnet in the material handling section.

5. The electromagnetic gripper for a punch press safety hand according to claim 3, characterized in that, The material taking section has a material taking end and a connecting end at its two ends. The material taking end is a hollow shell with an open bottom and an interference fit for inserting an installation block. The connecting end is integrally formed and fixed to the holding section. The installation block has a groove adapted to LED fill lights and electromagnets. The material taking section has a wire groove.

6. The electromagnetic gripper for a punch press safety hand according to claim 1, characterized in that, The gripping section includes an upper shell, a lower shell, a handle, and a quick-release assembly. The lithium battery power supply module and control switch are installed in the internal cavity formed when the upper shell and the lower shell are closed. The material taking section is integrally formed on the upper shell or the lower shell. The handle is hollow and movably sleeved on the outside of the upper shell and the lower shell, and is detachably connected to the upper shell and the lower shell through the quick-release assembly.

7. The electromagnetic gripper for a punch press safety hand according to claim 6, characterized in that, The quick-release assembly includes a circumferential limiting unit and a radial limiting unit. The circumferential limiting unit and the radial limiting unit cooperate with each other to restrict the circumferential and axial degrees of freedom of the handle that is sleeved onto the closed lower and upper shells.

8. The electromagnetic gripper for a punch press safety hand according to claim 7, characterized in that, The circumferential limiting unit includes a pair of U-shaped grooves, several floating engaging parts, and a pair of circumferential limiting blocks. The pair of U-shaped grooves are disposed on the outer walls of the upper and lower housings, and include an entry section, a disengagement section, and a locking section. The entry section and the disengagement section are parallel to the handle axis. The two ends of the locking section are connected to the inner ends of the entry section and the disengagement section and extend along the circumferential direction of the handle. The pair of circumferential limiting blocks are symmetrically fixed on the inner circumferential wall of the handle. Each of the floating engaging parts is floatingly installed on the side wall of each locking section. An engaging groove for engaging the circumferential limiting block is formed between two adjacent floating engaging parts.

9. A punch press safety hand electromagnetic gripper for picking up materials according to claim 8, characterized in that, The floating engagement component includes an engagement plate, a pair of floating rods, a pair of floating grooves, a pair of springs, and a pair of locking blocks. The pair of floating grooves are symmetrically opened on the side wall of the locking section. The pair of floating rods are slidably installed in each floating groove. The pair of springs are respectively disposed in each floating groove. The engagement plate is movably installed in the locking section and its two ends on one side are fixedly connected to the outer ends of the pair of floating rods. The pair of locking blocks are fixed at both ends of the other side wall of the engagement plate. The pair of locking blocks are inclined towards the side wall of the entry section.

10. A punch press safety hand electromagnetic gripper for picking up materials according to claim 8, characterized in that, The radial limiting unit includes a pair of limiting arc grooves and a pair of limiting sliders. The pair of limiting arc grooves are symmetrically opened on the outer walls of the upper and lower housings and their two ends are connected to the adjacent locking sections. The pair of limiting sliders are symmetrically fixed on the inner peripheral wall of the handle. When the circumferential limiting block is engaged by the floating engagement piece, the pair of limiting sliders are located in the corresponding limiting arc groove. When the circumferential limiting block disengages from the floating engagement piece and enters the corresponding disengagement section, it enters the adjacent locking section and the corresponding entry section.

Images