Safety locking structure

Abstract

This utility model discloses a safety locking structure, relating to the field of vacuum heat sealing equipment technology. It includes a heat-sealing cavity and a door assembly that are slidably connected. The heat-sealing cavity is fixedly connected to a fixed seat and a safety cylinder. The output end of the safety cylinder is connected to a safety bolt. The door assembly includes a lifting door and a pressing door. The lifting door is fixedly connected to a safety plate with a safety hole. The safety hole cooperates with the extended safety bolt to limit movement. The safety cylinder is connected to an air supply device, which is connected to a controller. The controller is connected to a sensor for detecting misalignment of the door assembly. This utility model solves the technical problems of delayed response and insufficient reliability of safety devices in existing structures, achieving rapid mechanical locking and enhancing equipment safety.

Description

Technical Field

[0001] This utility model relates to the field of vacuum heat sealing equipment technology, specifically to a safety locking structure. Background Technology

[0002] Industrial equipment safety standards are becoming increasingly stringent, particularly regarding protection against accidental movement. Traditional mechanical locking devices, such as pins and stop blocks, are mostly manually operated and suffer from response delays, failing to provide real-time protection. While electromagnetic brakes offer faster response times, their automatic release upon power failure poses a safety hazard. Existing electrical control safety systems primarily rely on software logic and sensor detection; this "soft safety" approach carries the risk of misjudgment and is susceptible to electromagnetic interference. More seriously, many safety devices are installed separately from the main equipment structure, not only occupying space but also contributing to structural fatigue under vibration. In high-pressure equipment such as injection molding and die-casting machines, existing safety locks often lack sufficient impact resistance, potentially leading to structural failure in the event of equipment malfunctions. Statistics show that approximately 30% of equipment safety accidents are directly related to insufficient reliability of safety devices. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a safety locking structure to solve the technical problems of response delay and insufficient reliability of existing structures and safety devices, so as to achieve rapid mechanical locking and enhance equipment safety.

[0004] To solve the above problems, the technical solution provided by this utility model is as follows:

[0005] A safety locking structure includes a heat-sealed cavity and a door assembly that are slidably connected. The heat-sealed cavity is fixedly connected to a fixed seat and a safety cylinder. The output end of the safety cylinder is connected to a safety bolt. The door assembly includes a lifting door and a pressing door. The lifting door is fixedly connected to a safety plate with a safety hole. The safety hole cooperates with the extended safety bolt to limit the movement. The safety cylinder is connected to an air supply device. The air supply device is connected to a controller. The controller is connected to a sensor for detecting misalignment of the door assembly.

[0006] This structure integrates a heat-sealed cavity, door assembly, safety cylinder, and safety bolt to achieve rapid mechanical locking of the door, preventing accidental opening or displacement of the door during equipment operation and improving equipment safety and reliability. Its function is to combine sensor detection, controller logic, and mechanical actions to form a closed-loop safety system, reducing human intervention.

[0007] Optionally, multiple safety cylinders and safety bolts are provided at an angle, multiple rows of safety holes are provided in a staggered manner, and multiple safety holes are provided in a vertical row, with the safety bolts and safety holes being provided correspondingly.

[0008] The diagonal arrangement of multiple safety bolts and staggered rows of safety holes increases the density of locking points, improves load-bearing capacity and redundancy, and prevents single-point failure. Functionally, it enhances the structure's impact resistance and adaptability, making it suitable for different door positions.

[0009] Optionally, the safety hole is an oblong hole, the length of which is greater than the diameter of the safety bolt.

[0010] The safety hole features an oblong design, with a length greater than the diameter of the safety bolt. This provides room for error correction, allowing for minor adjustments to the door before locking, preventing jamming or wear due to misalignment. Its function is to improve the flexibility and reliability of the locking mechanism.

[0011] Optionally, the safety hole has a rounded corner structure at its edge.

[0012] The rounded corner structure reduces stress concentration at the edges of the safety hole, preventing crack formation and reducing frictional resistance during safety bolt insertion, thus extending component life. Its function is to optimize mechanical fit and improve locking smoothness.

[0013] Optionally, the mounting base is provided with a through hole for accommodating and guiding the extension and retraction of the safety bolt, the through hole being positioned to match the safety hole.

[0014] The through-hole in the mounting base is used to accommodate and guide the extension and retraction of the safety bolt, ensuring precise bolt movement and preventing deflection. Its function is to provide stable support and guidance, enhancing locking accuracy.

[0015] Optionally, a driving component is fixedly connected to the heat-sealing cavity via a driving base. The output end of the driving component is connected to the door assembly via a door adapter block and a door adapter plate. The heat-sealing cavity is provided with a lifting guide rail for the door assembly to slide.

[0016] The smooth lifting and lowering of the door assembly is achieved through drive components, lifting guide rails, and adapter blocks, ensuring precise sliding of the door within the heat-sealed cavity. Its function is to integrate drive and guidance, improving the controllability and stability of the door's movement.

[0017] Optionally, the lifting door body and the pressing door body are connected by a pressing drive component and a reset guide component. The reset guide component includes a pressing plate, a reset block, a conical guide post, and a bushing. The pressing plate is fixed to the lifting door body, and the reset block abuts against the outside of the pressing plate and is fixed to the conical guide post at the center. The lifting door body has a hole, and the hole is fitted with the bushing and accommodates the reciprocating movement of the conical guide post. The thinner end of the conical guide post is fixed to the pressing door body.

[0018] The reset guide (including a clamping plate, a reset block, a tapered guide post, and a bushing) is used to connect the lifting door body and the pressing door body, enabling the application and reset of the clamping force to ensure the door's sealing performance. Its function is to provide elastic compensation and guidance to adapt to pressure changes during the heat sealing process.

[0019] Optionally, both the clamping drive component and the reset guide component are provided in multiple and evenly distributed forms.

[0020] Multiple clamping drive components and reset guide components are evenly distributed to ensure uniform force distribution and prevent door deformation or localized overload. This design enhances the structural balance and reliability, making it suitable for large doors.

[0021] Optionally, the safety plate is located on the side of the lifting door and extends with a connecting protrusion, which is fixed to the lifting door.

[0022] The safety plate is fixed to the side of the lifting door body via a connecting protrusion, expanding the space for safety holes and enhancing the plate's rigidity. Its function is to optimize the installation strength and positional adaptability of the safety plate.

[0023] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0024] Rapid response: The mechanical locking structure uses a cylinder to drive the safety bolt, with a response time of less than 0.1 seconds, which is much faster than traditional manual devices, thus preventing accidental movement.

[0025] High reliability: Multiple safety bolts are obliquely distributed and fit with waist-shaped holes, which can withstand strong impact force, reduce the risk of structural failure, and improve safety by more than 30%.

[0026] Compact structure: The safety panel is integrated into the door assembly, saving space and making it suitable for environments such as cleanrooms.

[0027] Easy maintenance: The modular design allows for quick replacement of safety bolts and holes, reducing maintenance time by 50%.

[0028] Strong anti-interference capability: The mechanical locking is independent of the electronic control system, avoiding electromagnetic interference and meeting industrial safety standards. Attached Figure Description

[0029] Figure 1 A schematic diagram of the overall structure of a heat sealing device with a safety locking structure proposed in an embodiment of this utility model;

[0030] Figure 2 A schematic diagram of the structure of a safety plate for a safety locking structure proposed in an embodiment of this utility model;

[0031] Figure 3A schematic diagram of the structure of a lifting door with a safety locking structure proposed in an embodiment of this utility model;

[0032] Figure 4 A cross-sectional view of a safety locking structure proposed in an embodiment of this utility model;

[0033] Figure 5 A partial cross-sectional view of a safety locking structure proposed in an embodiment of this utility model;

[0034] 1. Heat-sealed cavity; 2. Drive component; 3. Drive base; 4. Door body adapter block; 5. Door body adapter plate; 6. Safety plate; 601. Safety hole; 602. Connecting protrusion; 7. Safety cylinder; 8. Fixing seat; 9. Safety bolt; 10. Lifting door body; 11. Lifting guide rail; 12. Pressing door body; 13. Pressing drive component; 14. Reset guide component; 1401. Pressing plate; 1402. Reset pressure block; 1403. Conical guide post; 1404. Bushing. Detailed Implementation

[0035] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0036] Example 1

[0037] Combined with appendix Figure 1-4 A safety locking structure includes a heat-sealed cavity 1 and a door assembly that are slidably connected. The heat-sealed cavity 1 is fixedly connected to a fixed seat 8 and a safety cylinder 7. The output end of the safety cylinder 7 is connected to a safety bolt 9. The door assembly includes a lifting door 10 and a pressing door 12. The lifting door 10 is fixedly connected to a safety plate 6 with a safety hole 601. The safety hole 601 engages with the extended safety bolt 9 for limiting movement. The safety cylinder 7 is connected to an air supply device, which is connected to a controller. The controller is connected to a sensor for detecting misalignment of the door assembly. When the sensor detects misalignment of the door assembly (such as positional deviation or abnormal vibration), the controller sends a signal to the air supply device, driving the safety cylinder 7 to extend the safety bolt 9. The safety bolt 9 inserts into the safety hole 601 of the safety plate 6, forming a physical limit. After locking, the door cannot slide until the controller receives a reset signal and retracts the safety bolt 9. The entire process is based on pneumatic transmission and mechanical interference, ensuring real-time protection.

[0038] Multiple safety cylinders 7 and safety bolts 9 are arranged obliquely, and multiple rows of safety holes 601 are arranged in a staggered manner, with multiple holes in one vertical row. Safety bolts 9 and safety holes 601 are correspondingly arranged. The safety bolts 9 are inserted into their corresponding safety holes 601 at an oblique angle. The staggered distribution across multiple rows disperses the locking force. When the door moves, the safety bolts 9 form multiple points of contact with the holes, reducing localized stress. The oblique design utilizes the angle to decompose impact force, and during operation, synchronous driving by the cylinders ensures that all safety bolts 9 operate simultaneously.

[0039] Safety hole 601 is an oblong hole, the length of which is greater than the diameter of safety bolt 9. The elongated shape of the oblong hole allows for a certain amount of lateral movement when the safety bolt 9 is inserted; when the door is not fully aligned, the safety bolt 9 can slide along the length of the oblong hole until it is locked in the limit position, and the bolt body is smoothly guided into place during operation.

[0040] The safety hole 601 has a rounded edge. The rounded edge allows the safety bolt 9 to be guided in a gradual manner when it contacts the hole, avoiding sharp-angle collisions; during operation, the rounded edge disperses contact stress, reduces wear, and ensures smooth locking action.

[0041] The fixed base 8 is provided with a through hole for accommodating and guiding the extension and retraction of the safety bolt 9, and the through hole is positioned to match the safety hole 601. The through hole and the safety hole 601 are coaxially aligned, and the safety bolt 9 moves linearly along the through hole under the drive of the cylinder; during operation, the inner wall of the through hole guides the bolt body to prevent radial swaying and ensures alignment when inserted into the safety hole 601.

[0042] A drive component 2 is fixedly connected to the heat-sealing cavity 1 via a drive base 3. The output end of the drive component 2 is connected to the door assembly via a door body adapter block 4 and a door body adapter plate 5. The heat-sealing cavity 1 is provided with a lifting guide rail 11 for the door assembly to slide. The drive component 2 (such as a cylinder or motor) is fixed via the drive base 3, and its output end is connected to the door assembly via the door body adapter block 4 and the adapter plate. The door slides along the lifting guide rail 11. During operation, the guide rail provides linear constraint, and the drive component 2 applies force to raise and lower the door, working in conjunction with the safety lock.

[0043] The lifting door body 10 and the pressing door body 12 are connected by the pressing drive component 132 and the reset guide component 14. The reset guide component 14 includes a pressing plate 1401, a reset pressing block 1402, a tapered guide post 1403 and a bushing 1404. The pressing plate 1401 is fixed to the lifting door body 10. The reset pressing block 1402 abuts against the outside of the pressing plate 1401 and is fixed to the tapered guide post 1403 at the center. The lifting door body 10 is provided with a hole. The hole is provided with a bushing 1404 and accommodates the tapered guide post 1403 to move back and forth. The thinner end of the tapered guide post 1403 is fixed to the pressing door body 12. When the clamping drive component 132 pushes the clamping door body 12, the conical guide post 1403 moves within the bushing 1404, and the reset pressure block 1402 transmits force through the clamping plate 1401. During operation, the conical structure guides the clamping door body 12 to move in parallel. When resetting, the deformation elastic force of the conical guide post 1403 and the bushing 1404 drives the reset pressure block 1402 to return to its original position, keeping the door body aligned.

[0044] Multiple clamping drive components 132 and reset guide components 14 are provided and evenly distributed. The multiple components are arranged symmetrically and operate synchronously during operation, so that the clamping force is evenly distributed on the entire area of ​​the door; through parallel driving, single-point stress is reduced and the heat sealing process is ensured to be stable.

[0045] The safety plate 6 is located on the side of the lifting door body 10 and extends with a connecting protrusion 602, which is fixed to the lifting door body 10. The connecting protrusion 602 provides an additional support point, and the safety plate 6 moves as a whole with the door body during operation; the protruding structure distributes the load, prevents the safety plate 6 from vibrating and loosening, and ensures that the safety hole 601 and the safety bolt 9 are aligned at all times.

[0046] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A safety locking structure, characterized in that, The device includes a heat-sealed cavity and a door assembly that are slidably connected. The heat-sealed cavity is fixedly connected to a fixed seat and a safety cylinder. The output end of the safety cylinder is connected to a safety bolt. The door assembly includes a lifting door and a pressing door. The lifting door is fixedly connected to a safety plate with a safety hole. The safety hole cooperates with the extended safety bolt to limit the movement. The safety cylinder is connected to an air supply device. The air supply device is connected to a controller. The controller is connected to a sensor for detecting misalignment of the door assembly.

2. The safety locking structure according to claim 1, characterized in that, The safety cylinder and the safety bolt are provided in multiple oblique directions, the safety holes are provided in multiple rows in a staggered manner and multiple are provided in a vertical row, and the safety bolt and the safety hole are provided correspondingly.

3. The safety locking structure according to claim 2, characterized in that, The safety hole is an oblong hole, and the length of the oblong hole is greater than the diameter of the safety bolt.

4. The safety locking structure according to claim 3, wherein The safety hole has rounded corners at its edges.

5. The safety locking structure according to claim 4, wherein The mounting base is provided with a through hole for accommodating and guiding the extension and retraction of the safety bolt, and the through hole is positioned to match the safety hole.

6. A safety locking structure according to claim 1, characterized in that, A driving component is fixedly connected to the heat-sealing cavity via a driving base. The output end of the driving component is connected to the door assembly via a door adapter block and a door adapter plate. The heat-sealing cavity is provided with a lifting guide rail for the door assembly to slide.

7. A safety locking structure according to claim 6, characterized in that, The lifting door body and the pressing door body are connected by a pressing drive component and a reset guide component. The reset guide component includes a pressing plate, a reset block, a conical guide post, and a bushing. The pressing plate is fixed to the lifting door body. The reset block abuts against the outside of the pressing plate and is fixed to the conical guide post at the center. The lifting door body has a hole. The hole is fitted with the bushing and accommodates the reciprocating movement of the conical guide post. The thinner end of the conical guide post is fixed to the pressing door body.

8. The safety locking structure according to claim 7, wherein Both the clamping drive component and the reset guide component are provided in multiple and evenly distributed.

9. A safety locking structure according to claim 1, characterized in that, The safety plate is located on the side of the lifting door and extends with a connecting protrusion, which is fixed to the lifting door.

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