Punching machine device with protection mechanism

Abstract

The utility model discloses a punch press device with a protection mechanism, which belongs to the technical field of punch press protection, and comprises a punch press body, a lathe table, an upper die and a lower die, a punching area is arranged above the lower die, and a pair of side plates is fixedly connected on one side of the lathe table close to a staff station. A pair of side plates is fixedly connected to the lathe table, grating sensors are installed at the ends, close to each other, of the pair of side plates, a pair of back plates is further fixedly connected to the lathe table, and a storage plate is movably connected to the pair of back plates. Whether a worker takes and places a workpiece in a risk area or not can be monitored in real time, once it is detected that the hand enters the area, a signal is triggered immediately, the pneumatic push rod drives the check block to move between the upper die and the lower die, the safety of stamping operation is remarkably improved, and industrial accidents are effectively prevented while the production efficiency is not affected.

Description

Technical Field

[0001] This utility model relates to the field of punch press protection technology, and more specifically, to a punch press device with a protection mechanism. Background Technology

[0002] Stamping equipment, as an important forming device in modern production, is widely used in the production of automotive parts, electronic components and various metal products.

[0003] Chinese utility model patent CN220092853U discloses a punch press with a protective mechanism. The mechanism uses a motor to drive a lead screw, which in turn drives a guide block to move protective plates. This causes the two protective plates to come closer together and fit, thus protecting the punch press machine during operation. The protective plates form a barrier to block movement. This design solves the problem that most punch presses on the market have poor safety protection performance. When operators are using punch presses, the high impact pressure during operation can easily cause injury if parts fly off at close range. This design avoids such incidents and reduces safety hazards.

[0004] However, compared to the injury caused by flying parts, another situation poses a greater safety hazard: once a punch press starts operating, it must complete at least one cycle before stopping. If the operator does not remove their hands from between the upper and lower dies in time during this cycle, a serious workplace accident is inevitable. Although attempts have been made to improve safety on punch presses by adding emergency stop buttons and safety doors, these methods often rely on the operator's proactive reaction and cannot fundamentally prevent accidents caused by negligence or misjudgment. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a punching machine device with a protective mechanism. This utility model uses a grating sensor and a pneumatic push rod in conjunction with a PLC program to monitor in real time whether the operator is picking up or placing workpieces in a risk area. Once a hand is detected entering the area, a signal is immediately triggered, causing the pneumatic push rod to move the stop block between the upper and lower dies. This significantly improves the safety of the punching operation and effectively prevents workplace accidents without affecting production efficiency.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A punch press device with a protective mechanism includes a punch press body, a lathe table, an upper die, and a lower die. A punching area is provided above the lower die. A pair of side plates are fixedly connected to the lathe table on the side closest to the operator's work position. A grating sensor is installed at the end of each pair of side plates that are close to each other. A pair of back plates are also fixedly connected to the lathe table. A storage plate is movably connected to the pair of back plates. A pneumatic push rod is installed at the upper end of the storage plate. An output end is provided at the end of the pneumatic push rod near the punching area. A driven plate is fixedly connected to the end of the output end near the punching area. A stop block is movably connected to the driven plate. The height of the stop block is not less than 65mm. The lower surfaces of the driven plate and the stop block are slidably connected to the upper surface of the punching area.

[0010] Furthermore, the driven plate and the stop block are movably snapped together, and a miniature magnetic block is fixedly connected to the connection between the driven plate and the stop block. The magnetic poles of the miniature magnetic blocks on the driven plate and the stop block are opposite at their closest points.

[0011] Furthermore, the stop block is provided with a pair of threaded holes, and the driven plate is provided with a pair of threaded grooves with thread specifications matching the threaded holes, and the threaded holes and threaded grooves are coaxially arranged. The driven plate and the stop block are fixed by screwing a fixing screw at the threaded holes and threaded grooves.

[0012] Furthermore, the grating sensor and the pneumatic push rod are connected via a PLC. The PLC program collects the input signal of the grating sensor in real time and determines whether there is an object blocking the light based on the state of the input signal. When there is an object blocking the light between a pair of grating sensors, the PLC program outputs a control signal to the pneumatic push rod, controlling the output end of the pneumatic push rod to move forward so that the stop block is stuck between the upper and lower dies. When there is no object blocking the light between a pair of grating sensors, no signal is issued, and the PLC program no longer outputs a control signal to the pneumatic push rod. The pneumatic push rod then controls the output end to drive the stop block to retract and reset, so that the stamping operation can be completed smoothly.

[0013] 3. Beneficial effects

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] This solution, through the use of a grating sensor and a pneumatic push rod in conjunction with a PLC program, can monitor in real time whether workers are handling workpieces in high-risk areas. Once a hand is detected entering the area, a signal is immediately triggered, causing the pneumatic push rod to move a stop block between the upper and lower dies. This significantly improves the safety of stamping operations, effectively preventing workplace accidents without affecting production efficiency. Attached Figure Description

[0016] Figure 1This is a rear view of the present invention;

[0017] Figure 2 for Figure 1 Another state diagram;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0019] Figure 4 This is a schematic diagram of the structure of the workpiece to be processed in this utility model.

[0020] Explanation of the labels in the diagram:

[0021] 101. Lathe machine base; 1. Upper die; 2. Lower die; 3. Stamping area; 4. Side plate; 5. Grating sensor; 6. Back plate; 7. Shelf plate; 8. Pneumatic push rod; 9. Output end; 10. Driven plate; 11. Stop block; 12. Threaded hole; 13. Threaded groove; 14. Fixing screw. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1:

[0026] Please see Figure 1-4 A punch press device with a protection mechanism includes a punch press body, a lathe table 101, an upper die 1, and a lower die 2. A stamping area 3 is provided above the lower die 2, and the workpiece to be processed is placed on the stamping area 3. The stamping area 3 is a high-risk area where accidents are likely to occur. A pair of side plates 4 are fixedly connected to the side of the lathe table 101 near the operator's workstation. A grating sensor 5 is installed at the end of each pair of side plates 4 that is close to each other. The area on the lathe table 101 from the grating sensor 5 to the stamping area 3 is the monitoring area. The grating sensor 5 installed here can ensure that when the operator places the workpiece to be processed on the stamping area 3 or takes the workpiece from the stamping area 3 after a single stamping, it can be detected by the grating sensor 5, without relying on the operator's active operation. The machine tool features automated safety protection. A pair of back plates 6 are fixedly connected to the lathe table 101, and a shelf 7 is movably connected to the back plates 6. A pneumatic push rod 8 is installed at the upper end of the shelf 7. An output end 9 is provided at the end of the pneumatic push rod 8 near the stamping area 3. A driven plate 10 is fixedly connected to the end of the output end 9 near the stamping area 3. A stop block 11 is movably connected to the driven plate 10. The stop block 11 is normally kept in a retracted state, which does not affect the placement of the workpiece to be processed. The height of the stop block 11 is not less than 65mm, which ensures that if the press is accidentally started and pressed down in the event of a malfunction, but the operator's hand is still in the risk area, it provides a sufficient safe height range for the operator's hand, so as not to affect the operator's hand from being removed from the area in this case.

[0027] Please see Figure 2-3 The driven plate 10 and the stop block 11 are movably snapped together. Miniature magnetic blocks are fixedly connected to the connection points of the driven plate 10 and the stop block 11. The magnetic poles of the miniature magnetic blocks on the driven plate 10 and the stop block 11 are opposite at their closest points, facilitating initial docking of the driven plate 10 and the stop block 11. The stop block 11 has a pair of threaded holes 12, and the driven plate 10 has a pair of threaded grooves 13 with thread specifications matching the threaded holes 12. The threaded holes 12 and threaded grooves 13 are coaxially arranged. The fixing method between 0 and the stop 11 is to screw the fixing screw 14 into the threaded hole 12 and the threaded groove 13. If an accident occurs and the stop 11 is damaged, this movable connection method makes it easy to disassemble and replace the stop 11. The lower surface of the driven plate 10 and the stop 11 is slidably connected to the upper surface of the stamping area 3. When the worker's hands have not left the risk area, the driven plate 10 and the stop 11 will move to the upper surface of the stamping area 3 to prevent possible failures.

[0028] The grating sensor 5 and the pneumatic push rod 8 are connected via a PLC. The PLC program collects the input signal of the grating sensor 5 in real time and determines whether there is an object blocking the light based on the status of the input signal. When there is an object blocking the light between a pair of grating sensors 5, that is, when the operator places the workpiece to be processed on the stamping area 3 from the side with the grating sensor 5 with both hands, and the hands are not removed from the risk area, or when the operator reaches into the risk area to pick up the stamped workpiece, in both of these processes, the PLC program will output a control signal to the pneumatic push rod 8 to control the output end 9 of the pneumatic push rod 8 to move forward, so that the stop 11 is stuck between the upper die 1 and the lower die 2, even if the punch press malfunctions at this time. Even if the pressure is accidentally activated, it can still protect the safety of the operator's hands. When the operator places the workpiece to be processed on the stamping area 3 with both hands and then removes it from the risk area, there is no object blocking the light between the pair of grating sensors 5, so no signal will be emitted. At this time, the PLC program will no longer output control signals to the pneumatic push rod 8. Since the pneumatic push rod 8 does not receive a signal to extend the output end 9 or maintain this state, the output end 9 will automatically retract and reset the driven plate 10 and the stop block 11 to ensure that the stamping operation is completed smoothly. It is worth noting that the action of the pneumatic push rod 8 controlling the output end 9 to reset after not receiving a PLC signal can be achieved by the mechanical spring reset mechanism or other reset mechanisms used in existing pneumatic push rods.

[0029] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A punch press device with a protective mechanism, comprising a punch press body, a lathe table (101), an upper die (1), and a lower die (2), characterized in that: A stamping area (3) is provided above the lower die (2). A pair of side plates (4) are fixedly connected to the lathe table (101) on the side closest to the work station. A grating sensor (5) is installed at the end of the pair of side plates (4) that are close to each other. A pair of back plates (6) are also fixedly connected to the lathe table (101). A storage plate (7) is movably connected to the pair of back plates (6). A pneumatic push rod (8) is installed at the upper end of the storage plate (7). An output end (9) is provided at the end of the pneumatic push rod (8) that is close to the stamping area (3). A driven plate (10) is fixedly connected at the end of the output end (9) that is close to the stamping area (3). A stop block (11) is movably connected to the driven plate (10). The height of the stop block (11) is not less than 65mm. The lower surface of the driven plate (10) and the stop block (11) are slidably connected to the upper surface of the stamping area (3).

2. The punch press device with a protection mechanism according to claim 1, characterized in that: The driven plate (10) and the stop block (11) are movably snapped together, and a miniature magnetic block is fixedly connected at the connection between the driven plate (10) and the stop block (11).

3. A punch press device with a protection mechanism according to claim 2, characterized in that: The magnetic poles of the pair of miniature magnetic blocks on the driven plate (10) and the stop block (11) are opposite at their closest points.

4. A punch press device with a protection mechanism according to claim 1, characterized in that: The stop block (11) has a pair of threaded holes (12), and the driven plate (10) has a pair of threaded grooves (13) with thread specifications matching the threaded holes (12). The threaded holes (12) and the threaded grooves (13) are coaxially arranged. The driven plate (10) and the stop block (11) are fixed by screwing a fixing screw (14) into the threaded holes (12) and the threaded grooves (13).

5. A punch press device with a protection mechanism according to claim 1, characterized in that: The grating sensor (5) and the pneumatic push rod (8) are connected by a PLC. The PLC program collects the input signal of the grating sensor (5) in real time and judges whether there is an object blocking the light according to the state of the input signal. When there is an object blocking the light between a pair of grating sensors (5), the PLC program outputs a control signal to the pneumatic push rod (8) to control the output end (9) of the pneumatic push rod (8) to move forward so that the stop (11) is stuck between the upper mold (1) and the lower mold (2). When there is no object blocking the light between a pair of grating sensors (5), no signal is issued and the PLC program no longer outputs a control signal to the pneumatic push rod (8). The pneumatic push rod (8) then controls the output end (9) to drive the stop (11) to retract and reset so that the stamping operation can be completed smoothly.

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