Hand pressing prevention device
By designing a anti-pressure hand device, using the combination of safety switches and compression springs, the problem of injury and disability caused by misoperation during long-term work of the hydraulic machine is solved, and the safety protection and working efficiency of the hydraulic machine are improved.
Patent Information
- Application Number
- CN202421923071.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-08
AI Technical Summary
When working for a long time, the hydraulic press is prone to misoperation due to malfunctioning machinery or operator fatigue, resulting in continuous downward pressure and failure of manpower to remove downward pressure, resulting in injury and disability accidents.
An anti-pressure hand device is designed, including a mounting sleeve, a press rod, a safety switch, a fastening sleeve and a compression spring. Driven by the hydraulic press, the safety switch is disconnected when it contacts the workpiece or the worker's hand, preventing the hydraulic press from being pressed down and achieving rapid reset.
It effectively avoids the risk of hand pressing the hydraulic press during misoperation, improves the safety of the operator, and improves work efficiency while ensuring safety.
Smart Images
Figure CN222902462U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of furniture production equipment safety, in particular to a finger protection device. Background Technique
[0002] A hydraulic press is a mechanical device that utilizes the principle of hydraulic transmission and is mainly used for processing metal sheets or other materials.
[0003] The hydraulic press generates a huge pressure through a hydraulic cylinder. The metal sheet is placed in a mold and formed and processed by pressing or bending. The hydraulic press has the advantages of simple operation, adjustable pressure, and high forming accuracy, and is widely used in industrial fields such as metal stamping, pressure forming, and workshop manufacturing.
[0004] However, when the hydraulic press works for a long time, it is prone to mechanical failures or misoperations due to operator fatigue, such as continuous downward pressing, downward pressing before the hand is withdrawn, etc., resulting in tragic accidents of injury and disability. Content of the Utility Model
[0005] To make up for the above deficiencies, the utility model provides a finger protection device, aiming to improve the problem that when the hydraulic press works for a long time, it is prone to mechanical failures or misoperations due to operator fatigue, such as continuous downward pressing, downward pressing before the hand is withdrawn, etc., resulting in tragic accidents of injury and disability in the prior art.
[0006] To achieve the above object, the utility model provides the following technical solution: a finger protection device, including a mounting sleeve, a pressure rod is slidably connected inside the mounting sleeve, a switch mounting seat is fixedly connected to one side of the pressure rod, a safety switch is arranged inside the switch mounting seat, a fastening sleeve is arranged outside the safety switch, a switch mounting seat is arranged on one side of the fastening sleeve, a compression spring is arranged inside the fastening sleeve, and the other end of the compression spring is arranged outside a guide sleeve, and the guide sleeve is fixedly connected to the inside of the mounting sleeve.
[0007] Further, exhaust holes are formed inside the mounting sleeve.
[0008] Further, a connecting rod is arranged inside the left side of the mounting sleeve, mounting screws are threadedly connected inside the connecting rod, and mounting screws are threadedly connected inside the mounting sleeve.
[0009] The utility model has the following beneficial effects:
[0010] 1. When the upper die presses down and touches the worker's hand, the voltage between the positive electrode on the lower die and the negative electrode on the anti-pinch hand device is 24V or 12V. At this time, the safety switch is disconnected. Due to the excessive human body resistance between the positive electrode on the lower die and the negative electrode on the anti-pinch hand device, the upper and lower dies cannot conduct electricity. This can prevent the hydraulic press from pressing down and quickly reset, effectively avoiding the risk of pinching hands and having excellent safety protection performance.
[0011] 2. The anti-pinch hand device is designed for safety considerations. The anti-pinch hand device can improve work efficiency while ensuring safety, thus greatly enhancing the practicality of the device. Brief Description of the Drawings
[0012] Figure 1 is a perspective view of the present utility model;
[0013] Figure 2 is an exploded structural schematic diagram of the present utility model;
[0014] Figure 3 is a partial structural sectional view of the present utility model.
[0015] Legend Explanation:
[0016] 1. Mounting sleeve; 2. Pressure rod; 3. Switch mounting seat; 4. Safety switch; 5. Fastening sleeve; 6. Compression spring; 7. Guide sleeve; 8. Exhaust hole; 9. Connecting rod; 10. Mounting screw. Detailed Embodiment
[0017] Referring to Figure 1 、 Figure 2 and Figure 3 , an embodiment provided by the present utility model: an anti-pinch hand device, including a mounting sleeve 1, a pressure rod 2 is slidably connected inside the mounting sleeve 1, a switch mounting seat 3 is fixedly connected to one side of the pressure rod 2, a safety switch 4 is arranged inside the switch mounting seat 3, a fastening sleeve 5 is arranged outside the safety switch 4, a switch mounting seat 3 is arranged on one side of the fastening sleeve 5, a compression spring 6 is arranged inside the fastening sleeve 5, the other end of the compression spring 6 is arranged outside the guide sleeve 7, the guide sleeve 7 is fixedly connected to the inside of the mounting sleeve 1, and exhaust holes 8 are opened inside the mounting sleeve 1.
[0018] The hydraulic press drives the mounting sleeve 1 and the pressure rod 2 to press down through the connecting rod 9. The downward movement of the pressure rod 2 drives the switch mounting seat 3 and the safety switch 4 to move upward. The upward movement of the safety switch 4 drives the fastening sleeve 5 to squeeze the compression spring 6. The guide sleeve 7 is used to mount the compression spring 6, and the compression spring 6 plays a buffering role. When the safety switch 4 is triggered by squeezing, a signal is given to start detecting whether the upper and lower dies are conducting (or insulated) through the workpiece. If they are conducting, the hydraulic press continues to press down for work. If they are insulated, the hydraulic press changes direction and defaults to return. The exhaust holes 8 are used to discharge the gas inside the mounting sleeve 1.
[0019] Inside the left side of the mounting sleeve 1 of the present utility model, a connecting rod 9 is provided. Inside the connecting rod 9, mounting screws 10 are threadedly connected, and mounting screws 10 are also threadedly connected inside the mounting sleeve 1.
[0020] The connecting rod 9 of the present utility model is fixedly mounted on the mounting sleeve 1 through the mounting screws 10.
[0021] Working principle: When using this device, driven by a hydraulic press, the safety switch 4 will receive an upward force. When the upper die contacts the metal workpiece or the upper die contacts the worker's hand, the switch mounting seat 3 will drive the safety switch 4 to move upward. At this time, the safety switch 4 disconnects. When there is a metal workpiece between the upper die and the lower die, since metal can conduct electricity, the positive electrode on the lower die and the negative electrode on the anti-pinch hand device form an electrical circuit, so the hydraulic press will normally press down to perform riveting on the metal workpiece. When there is a worker's hand between the upper die and the lower die, since the worker wears insulating gloves during operation, the voltage between the positive electrode on the lower die and the negative electrode on the anti-pinch hand device is 24V or 12V. At this time, the safety switch 4 disconnects. Due to the excessive human body resistance between the positive electrode on the lower die and the negative electrode on the anti-pinch hand device, the upper and lower dies cannot conduct, so the hydraulic press defaults to return and will not continue to descend for riveting, improving the safety of the worker.
[0022] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. An anti-hand pressure device, comprising a mounting sleeve (1), characterized in that: The interior of the mounting sleeve (1) is slidably connected to a pressure rod (2), one side of the pressure rod (2) is fixedly connected to a switch mounting seat (3), the inner side of the switch mounting seat (3) is provided with a safety switch (4), the outer side of the safety switch (4) is provided with a fastening sleeve (5), one side of the fastening sleeve (5) is provided with a switch mounting seat (3), the inner side of the fastening sleeve (5) is provided with a compression spring (6), the other end of the compression spring (6) is provided on the outside of a guide sleeve (7), and the guide sleeve (7) is fixedly connected to the inner side of the mounting sleeve (1).
2. The anti-hand pressure device according to claim 1, characterized in that: The interior of the installation sleeve (1) is provided with an exhaust hole (8).
3. The anti-hand pressure device according to claim 1, characterized in that: A connecting rod (9) is provided inside the left side of the installation sleeve (1), the interior of the connecting rod (9) is threadedly connected with a mounting screw (10), and the interior of the installation sleeve (1) is threadedly connected with a mounting screw (10).