Safety guard for a hand punch press and system

Abstract

The application belongs to the technical field of manual punch press equipment, and discloses a safety protection device and system for a manual punch press, which comprises a die holder, a bottom plate, a double-button assembly and a safety grating; the die holder comprises an upper die plate and a lower die plate, the lower die plate is provided with guide columns, the upper die plate is slidingly arranged on the guide columns, and the die holder is electrically connected with the double-button assembly in a double-button starting mode; the bottom plate is located at the bottom of the lower die plate; the left end and the right end of the bottom plate are both provided with a protection device and a safety grating; the protection device comprises a sliding rail and a safety block, the sliding rail is longitudinally arranged on the bottom plate, a right-angle bracket is slidingly arranged on the sliding rail, an electromagnetic valve cylinder is horizontally arranged on the right-angle bracket, the safety block is arranged on the piston rod of the electromagnetic valve cylinder, and the safety block is located within the distance between the upper die plate and the lower die plate through the movement range of the piston rod; the safety grating, the electromagnetic valve cylinder, the die holder and the double-button assembly are electrically connected with each other.

Description

Technical Field

[0001] This application relates to the field of manual punch press equipment technology, and more specifically, to a safety protection device and system for manual punch presses. Background Technology

[0002] When personnel place and retrieve products on existing manual punch presses, there is only one safety light curtain for protection (the equipment brake does not release when the light curtain is blocked). When the equipment wears out or jams, there is an uncontrollable risk of punching, which may lead to industrial accidents.

[0003] Therefore, this application proposes a safety protection device and system for manual punch presses to solve the aforementioned problems.

[0004] Application content

[0005] To address the aforementioned issues, this application provides a safety protection device and system for manual punch presses.

[0006] The manual punch press safety protection device and system provided in this application adopts the following technical solution:

[0007] The safety protection device for a manual punch press includes a mold frame, a base plate, a dual-button assembly, and a safety light curtain;

[0008] The mold frame includes an upper mold plate and a lower mold plate. A guide post is provided on the lower mold plate. The upper mold plate is slidably mounted on the guide post. The mold frame is in a dual-button start mode and is electrically connected to the dual-button assembly. The base plate is located at the bottom of the lower mold plate.

[0009] The left and right ends of the base plate are both equipped with protective devices and safety light curtains;

[0010] The protective device includes a slide rail and a safety block. The slide rail is longitudinally arranged on the base plate. A right-angle bracket is slidably arranged on the slide rail. A solenoid valve cylinder is horizontally arranged on the right-angle bracket. The safety block is arranged on the piston rod of the solenoid valve cylinder. The movement range of the safety block through the piston rod is within the distance between the upper template and the lower template.

[0011] The safety light curtain, the solenoid valve cylinder, the mold frame, and the dual-button assembly are electrically connected to each other.

[0012] Furthermore, the base plate includes a middle plate and side plates disposed on both sides of the middle plate. The middle plate is located below the lower template and is larger in size than the lower template. The slide rail is disposed on the upper surface of the side plate.

[0013] Through the above technical solutions, when the safety block is impacted, the split base plate can better absorb the force; the middle plate is larger than the lower template, increasing the coverage area of ​​the base plate and further improving the safety of the equipment; the slide rail is set on the upper surface of the side plate, making the installation of the protective device more convenient, and also facilitating maintenance and replacement.

[0014] Furthermore, each of the protective devices has two slide rails arranged in parallel, and the bottom of the right-angle bracket is symmetrically provided with sliders connected to the slide rails.

[0015] The above technical solutions increase the stability and reliability of the protective device; the slider at the bottom of the right-angle bracket is connected to the slide rail, making the protective device more stable during sliding and reducing equipment damage or personal injury caused by vibration or impact.

[0016] Furthermore, the right-angle bracket has horizontally symmetrically arranged sliding cylinders with the solenoid valve cylinder as the center, and the safety block is provided with a sliding rod that is slidably connected to the sliding cylinders.

[0017] Through the above technical solution, this design makes the movement of the safety block smoother and more precise; the symmetrical arrangement of the slide also increases the stability of the protective device, ensuring that the safety block can be ejected quickly and accurately in an emergency.

[0018] Furthermore, the slide cylinder has a symmetrical upper and lower arrangement.

[0019] The above technical solution, with its symmetrical upper and lower slide design, ensures that the safety block is subjected to uniform force during movement, reducing equipment damage or personal injury caused by uneven force distribution.

[0020] Furthermore, the safety block has a U-shaped through groove, and the openings of the through grooves on adjacent safety blocks are opposite each other.

[0021] Through the above technical solution, this design allows the safety block to better cover the mold area when it pops out, while reducing the weight of the safety block itself and ensuring the protection area; at the same time, the through-slot design also facilitates the installation and maintenance of the safety block.

[0022] Furthermore, when the piston rod of the solenoid valve cylinder drives the safety block to move toward the mold frame, the safety block is suspended between the upper mold plate and the lower mold plate.

[0023] Through the above technical solution, the safety block can be deployed quickly and accurately in emergencies, protecting the safety of operators. The floating design also reduces friction between the safety block and the template, extending the service life of the equipment.

[0024] A manual punch press safety protection system, based on the manual punch press safety protection device according to claim 1, the system includes the following method:

[0025] S1. The safety light curtain receives the start signal and performs safety monitoring;

[0026] S2. When the safety conditions are met, the safety light curtain sends a command to the solenoid valve cylinder to make the safety block pop out and hover between the upper and lower templates; if the safety block fails to pop out successfully, the solenoid valve cylinder sends a signal to the safety light curtain, and the safety light curtain alarms after receiving the signal.

[0027] S3. Workers manually place the processing material into the mold frame;

[0028] S4. After the sensor detection step S3 of the safety light curtain is completed, the manual retraction is completed, and a signal is sent to the solenoid valve cylinder to retract and reset the safety block. At this time, the mold frame can be started with both buttons for production processing; if the safety block is not retracted and reset, the two buttons will be invalid.

[0029] Furthermore, in step S1, when the mold frame is in inch motion mode, the safety block is not controlled by the safety light curtain and the solenoid valve cylinder.

[0030] Furthermore, the safety conditions mentioned in step S2 include two: safety condition 1 is that the mold frame is in the safe stroke mode, and safety condition 2 is that the punch press is at 0°.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] (1) By setting up safety light curtains and safety blocks, dual safety protection for manual punch presses is achieved, which greatly reduces safety accidents caused by equipment failure or misoperation during operation.

[0033] (2) By controlling the solenoid valve cylinder and safety light curtain by PLC, the equipment’s automated safety protection is realized, reducing the possibility of human error and improving the safety and reliability of the equipment. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of this application;

[0035] Figure 2 This is a three-dimensional schematic diagram of the present application;

[0036] Figure 3 This is a schematic diagram of the right-angle bracket of this application;

[0037] Figure 4 This is a system diagram of this application;

[0038] Figure 5 This is the external wiring diagram for this application.

[0039] The following are the labels in the diagram: 1. Safety light curtain; 2. Upper template; 3. Lower template; 4. Guide post; 5. Slide rail; 6. Safety block; 7. Right-angle bracket; 8. Solenoid valve cylinder; 9. Middle plate; 10. Side plate; 11. Slider; 12. Slide cylinder; 13. Slide rod. Detailed Implementation

[0040] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0041] In the description of this application, 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 application 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 application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this application, it should be noted that, unless otherwise expressly 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 application based on the specific circumstances.

[0043] Example:

[0044] The following is in conjunction with the appendix Figure 1 -5 provides further details regarding this application.

[0045] This application discloses a safety protection device for a manual punch press, including a die frame, a base plate, a dual-button assembly, and a safety light curtain 1;

[0046] The mold frame includes an upper template 2 and a lower template 3. A guide post 4 is provided on the lower template 3. The upper template 2 is slidably mounted on the guide post 4. The mold frame is a dual-button start mode and is electrically connected to the dual-button assembly. The base plate is located at the bottom of the lower template 3.

[0047] The left and right ends of the base plate are both equipped with protective devices and safety light curtains 1;

[0048] The protective device includes a slide rail 5 and a safety block 6. The slide rail 5 is longitudinally mounted on the base plate. A right-angle bracket 7 is slidably mounted on the slide rail 5. A solenoid valve cylinder 8 is horizontally mounted on the right-angle bracket 7. A safety block 6 is mounted on the piston rod of the solenoid valve cylinder 8. The movement range of the safety block 6 through the piston rod is within the distance between the upper template 2 and the lower template 3.

[0049] The safety light curtain 1, solenoid valve cylinder 8, mold frame and double button assembly are electrically connected to each other.

[0050] See Figure 1 , Figure 2 and Figure 3 The base plate includes a middle plate 9 and side plates 10 on both sides of the middle plate 9. The middle plate 9 is located below the lower template 3 and is larger than the lower template 3. A slide rail 5 is located on the upper surface of the side plates 10. When the safety block 6 is impacted, the split base plate can better absorb the force. The larger size of the middle plate 9 compared to the lower template 3 increases the coverage area of ​​the base plate, further improving the safety of the equipment. The slide rail 5, located on the upper surface of the side plates 10, makes the installation of the protective device more convenient, and also facilitates maintenance and replacement.

[0051] See Figure 1 , Figure 2 and Figure 3 Each protective device has two slide rails 5 arranged in parallel, and the bottom of the right-angle bracket is symmetrically equipped with sliders 11 connected to the slide rails 5; this increases the stability and reliability of the protective device; the sliders 11 at the bottom of the right-angle bracket are connected to the slide rails 5, making the protective device more stable during sliding and reducing equipment damage or personal injury caused by vibration or impact.

[0052] See Figure 1 , Figure 2 and Figure 3 A slide cylinder 12 is symmetrically arranged horizontally on the right-angle bracket with the solenoid valve cylinder 8 as the center. The safety block 6 is provided with a slide rod 13 that is slidably connected to the slide cylinder 12. This design makes the movement of the safety block 6 more stable and precise. The symmetrical arrangement of the slide cylinder 12 also increases the stability of the protective device, ensuring that the safety block 6 can be deployed quickly and accurately in an emergency.

[0053] See Figure 1 , Figure 2 and Figure 3 The slide cylinder 12 has a symmetrical structure at the top and bottom. The symmetrical design of the slide cylinder 12 ensures that the safety block 6 is subjected to uniform force during movement, reducing equipment damage or personal injury caused by uneven force.

[0054] See Figure 1 , Figure 2 and Figure 3Safety block 6 has a U-shaped through slot, and the slots on adjacent safety blocks 6 are opposite each other. This design allows safety block 6 to better cover the mold area when it pops out, while reducing the weight of safety block 6 itself and ensuring the protection area. At the same time, the through slot design also facilitates the installation and maintenance of safety block 6.

[0055] See Figure 1 , Figure 2 and Figure 3 When the piston rod of the solenoid valve cylinder 8 drives the safety block 6 to move towards the mold frame, the safety block 6 is suspended between the upper mold plate 2 and the lower mold plate 3. In an emergency, the safety block 6 can quickly and accurately pop out to protect the operator's safety. The suspension design also reduces the friction between the safety block 6 and the mold plate, extending the service life of the equipment.

[0056] A manual punch press safety protection system, based on a manual punch press safety protection device, includes the following methods:

[0057] S1. Safety light curtain 1 receives the start signal and performs safety monitoring;

[0058] S2. When the safety conditions are met, the safety light curtain 1 sends a command to the solenoid valve cylinder 8 to make the safety block 6 pop out and hover between the upper template 2 and the lower template 3; if the safety block 6 fails to pop out successfully, the solenoid valve cylinder 8 sends a signal to the safety light curtain 1, and the safety light curtain 1 alarms after receiving the signal.

[0059] S3. Workers manually place the processing material into the mold frame;

[0060] S4. After the sensor detection step S3 of the safety light curtain 1 is completed, the manual retraction is completed, and a signal is sent to the solenoid valve cylinder 8 to retract and reset the safety block 6. At this time, the mold frame can be started with the double button for production processing; if the safety block 6 is not retracted and reset, the double button will be invalid.

[0061] In step S1, when the mold frame is in inch motion mode, the safety block 6 is not controlled by the safety light curtain 1 and the solenoid valve cylinder 8. This design allows the operator to control the equipment more flexibly in a specific operating mode, improving the convenience and safety of operation.

[0062] Referring to Figures 1, 2, and 3, the safety conditions in step S2 include two: safety condition 1 is that the mold frame is in the safe stroke mode, and safety condition 2 is that the punch press is at 0°. This ensures that the equipment is in a safe state before startup, reducing safety hazards caused by unstable equipment status. By setting clear safety conditions, the safety and reliability of the equipment are further improved.

[0063] The implementation principle of the manual punch press safety protection device and system in this application embodiment is as follows:

[0064] When the safety protection device and system of the manual punch press are working, the safety light curtain 1 first performs a safety check after receiving the start signal to determine whether the mold frame is in the safe stroke mode and whether the punch press position is 0°. When these two safety conditions are met, the safety light curtain 1 sends a command to the solenoid valve cylinder 8, so that the safety block 6 is ejected through the slide rail 5 and the right-angle bracket 7 under the action of the piston rod of the solenoid valve cylinder 8 and hovers between the upper mold plate 2 and the lower mold plate 3.

[0065] At this time, the worker can put their hand into the mold frame to place the material to be processed. After the sensor of the safety light curtain 1 detects the hand being retracted, it sends a signal to the solenoid valve cylinder 8 to retract and reset the safety block 6. Then the operator can start the mold frame for production processing through the double button.

[0066] During this process, if the safety block 6 fails to pop out or is not retracted and reset, the system will issue an alarm signal and the dual-button start will be ineffective; when the mold frame is in the inching mode, the safety block 6 is not controlled by the safety light curtain 1 and the solenoid valve cylinder 8.

[0067] Safety block 6 is divided into two states:

[0068] State 1: When the mold equipment is in standby or cutting mode, the safety block 6 is reset and the safety light curtain 1 provides a feedback signal.

[0069] State 2: When the mold equipment is loading or repairing the mold, the safety block 6 pops out and floats between the upper mold plate 2 and the lower mold plate 3. The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A safety protection device for a manual punch press, comprising a die frame, a base plate, a dual-button assembly, and a safety light curtain (1), characterized in that: The mold frame includes an upper mold plate (2) and a lower mold plate (3). A guide post (4) is provided on the lower mold plate (3). The upper mold plate (2) is slidably disposed on the guide post (4). The mold frame is in a dual-button start mode and is electrically connected to the dual-button assembly. The base plate is located at the bottom of the lower mold plate (3). The left and right ends of the base plate are both equipped with protective devices and the safety light curtain (1); The protective device includes a slide rail (5) and a safety block (6). The slide rail (5) is longitudinally arranged on the base plate. A right-angle bracket (7) is slidably arranged on the slide rail (5). A solenoid valve cylinder (8) is horizontally arranged on the right-angle bracket (7). The safety block (6) is arranged on the piston rod of the solenoid valve cylinder (8). The movement range of the safety block (6) through the piston rod is within the distance between the upper template (2) and the lower template (3). The safety light curtain (1), the solenoid valve cylinder (8), the mold frame, and the dual-button assembly are electrically connected to each other.

2. The safety protection device for a manual punch press according to claim 1, characterized in that: The base plate includes a middle plate (9) and side plates (10) disposed on both sides of the middle plate (9). The middle plate (9) is located below the lower template (3) and is larger in size than the lower template (3). The slide rail (5) is disposed on the upper surface of the side plate (10).

3. The safety protection device for a manual punch press according to claim 1, characterized in that: Each of the protective devices has two slide rails (5) arranged in parallel, and the bottom of the right-angle bracket (7) is symmetrically provided with sliders (11) connected to the slide rails (5).

4. The safety protection device for a manual punch press according to claim 1, characterized in that: The right-angle bracket (7) has a slide cylinder (12) arranged horizontally and symmetrically with the solenoid valve cylinder (8) as the center, and the safety block (6) is provided with a slide rod (13) that is slidably connected to the slide cylinder (12).

5. The safety protection device for a manual punch press according to claim 4, characterized in that: The slide tube (12) has a symmetrical structure arranged vertically.

6. The safety protection device for a manual punch press according to claim 1, characterized in that: The safety block (6) has a U-shaped through groove, and the openings of the through grooves on adjacent safety blocks (6) are opposite each other.

7. The safety protection device for a manual punch press according to claim 1, characterized in that: When the piston rod of the solenoid valve cylinder (8) drives the safety block (6) to move toward the mold frame, the safety block (6) is suspended between the upper template (2) and the lower template (3).

8. A manual punch press safety protection system, based on the manual punch press safety protection device according to claim 1, characterized in that, The system includes the following methods: S1. The safety light curtain (1) receives the start signal and performs safety monitoring; S2. When the safety conditions are met, the safety light curtain (1) sends a command to the solenoid valve cylinder (8) to make the safety block (6) pop out and hover between the upper template (2) and the lower template (3); if the safety block (6) fails to pop out, the solenoid valve cylinder (8) sends a signal to the safety light curtain (1), and the safety light curtain (1) alarms after receiving the signal. S3. Workers manually place the processing material into the mold frame; S4. After the sensor detection step S3 of the safety light curtain (1) is completed, the hand is retracted and a signal is sent to the solenoid valve cylinder (8) to retract and reset the safety block (6). At this time, the mold frame can be started with the double button for production processing. If the safety block (6) is not retracted and reset, the double button will be invalid.

9. The manual punch press safety protection system according to claim 8, characterized in that: In step S1, when the mold frame is in inch motion mode, the safety block (6) is not controlled by the safety light curtain (1) and the solenoid valve cylinder (8).

10. The manual punch press safety protection system according to claim 8, characterized in that, The safety conditions mentioned in step S2 include two: safety condition 1 is that the mold frame is in the safe stroke mode, and safety condition 2 is that the punch press is at 0°.

Images