Tool quick replacement drawer locking device
By combining a rotary clamping cylinder with a T-shaped locking fixture, the problems of unstable positioning and jamming during unlocking of traditional fixture fixing platforms are solved, enabling rapid unlocking and locking of fixture drawers, thus improving production efficiency and user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI CAIAIFU STEERING SYST WUHAN CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional tooling platforms suffer from unstable positioning, stuck unlocking, and high wear rates on ECU production assembly lines, affecting production efficiency and user experience.
The system employs a rotary clamping cylinder in conjunction with a T-type locking fixture. The rotary clamping cylinder enables rapid unlocking and locking of the drawer. Combined with a buffer and detection sensor, it ensures rapid loading and unloading and reliable connection of the fixture.
It enables quick unlocking and locking of tooling drawers, improving production efficiency, reducing failure rate, and ensuring positioning accuracy and user experience.
Smart Images

Figure CN224464065U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical technology, specifically to a tooling quick-change drawer locking device. Background Technology
[0002] On the ECU production assembly line, there are many types of grippers and some tooling that needs to be replaced regularly. The handling of these grippers or tooling needs to meet the requirements of not affecting production and being easy for operators to use.
[0003] Traditional fixed platforms for storing tooling typically use pins for locking, which can lead to unstable positioning and jamming issues after unlocking or locking, potentially affecting production efficiency and user experience. The grippers also have low maintenance efficiency, and after a period of use, the pins tend to wear out easily, resulting in a high failure rate.
[0004] Therefore, it is necessary to design a tooling quick-change drawer locking device to enable quick unlocking and locking of tooling drawers, facilitating operators to quickly pick up and put away tooling, meeting the high-efficiency production requirements of the production line while ensuring the reliability of the drawer connection. Summary of the Invention
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a tooling quick-change drawer locking device, which enables quick unlocking and locking of tooling drawers, facilitating operators to quickly pick up and put away tooling, meeting the high-efficiency production requirements of the production line while ensuring the reliability of the drawer connection.
[0006] To achieve the above objectives, this utility model provides a quick-change drawer locking device, comprising a rotary clamping cylinder, an L-shaped fixing plate, a T-shaped locking fixture, a drawer connecting fixture, a limit screw, a detection sensor, and a buffer. The rotary clamping cylinder is placed on the horizontal surface of the L-shaped fixing plate and fixed to the vertical surface of the L-shaped fixing plate. The cylinder shaft of the rotary clamping cylinder passes through the vertical surface of the L-shaped fixing plate and connects to the T-shaped locking fixture. The drawer connecting fixture is fixed to the drawer. The side of the drawer connecting fixture facing the L-shaped fixing plate has a T-shaped groove. The T-shaped locking fixture can lock into or separate from the T-shaped groove. A buffer is installed at the bottom of the drawer connecting fixture, and the end of the buffer extends to the front of the vertical face of the L-shaped fixing plate. A limit screw and a detection sensor are installed on the front of the vertical face of the L-shaped fixing plate.
[0007] A proximity switch is installed on the side of the rotary clamping cylinder.
[0008] The rotary clamping cylinder is equipped with a one-way throttle valve.
[0009] The limiting screw and the detection sensor are located on both sides of the cylinder shaft of the rotary clamping cylinder.
[0010] The drawer connecting fixture is fixed to the drawer, and the rotary clamping cylinder is fixed to the vertical surface of the L-shaped fixing plate with fixing screws.
[0011] Compared with existing technologies, this invention uses a rotary clamping cylinder to unlock and lock the T-shaped locking fixture and the drawer connection fixture, enabling smooth and rapid unlocking or locking of the drawer and facilitating convenient loading and unloading of fixtures in high-efficiency production processes. This invention has the advantages of simple structure, easy installation, low failure rate, good performance, high positioning accuracy, and high reliability. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model.
[0013] Figure 2 This is the front view of the present invention.
[0014] Figure 3 This is a top view of the present invention.
[0015] Figure 4 This is a schematic diagram of the T-shaped locking fixture of this utility model. Detailed Implementation
[0016] The present invention will now be further described with reference to the accompanying drawings.
[0017] See Figures 1-4 This utility model is a quick-change drawer locking device, including a rotary clamping cylinder 8, an L-shaped fixing plate 3, a T-shaped locking fixture, a drawer connecting fixture, a limit screw, a detection sensor, and a buffer. The rotary clamping cylinder 8 is placed on the horizontal surface of the L-shaped fixing plate 3 and fixed to the vertical surface of the L-shaped fixing plate 3. The cylinder shaft of the rotary clamping cylinder 8 passes through the vertical surface of the L-shaped fixing plate 3 and is connected to the T-shaped locking fixture 2. The drawer connecting fixture 1 is fixed to the drawer. The side of the drawer connecting fixture 1 facing the L-shaped fixing plate 3 is provided with a T-shaped groove. The T-shaped locking fixture 2 is locked in the T-shaped groove or separated from the T-shaped groove. A buffer 4 is installed at the bottom of the drawer connecting fixture 1. The end of the buffer 4 extends to the front of the vertical surface of the L-shaped fixing plate 3. By adjusting the position of the end of the buffer 4, the damping of the drawer opening and closing can be adjusted, thereby improving the performance of the locking device. Limit screws 11 and detection sensors 5 are installed on the vertical front side of the L-shaped fixing plate 3. The limit screws 11 limit the extreme position of the drawer to prevent the drawer connecting fixture 1 from colliding with the detection sensor 5. The detection sensor 5 is used to detect whether the drawer is in place and can interact with the program.
[0018] A proximity switch 7 is installed on the side of the rotary clamping cylinder 8 to detect the status of the rotary clamping cylinder 8.
[0019] The rotary clamping cylinder 8 is equipped with a one-way throttle valve 9 to realize the one-way throttle function of exhaust.
[0020] The limit screw 11 and the detection sensor 5 are located on both sides of the cylinder shaft of the rotary clamping cylinder 8.
[0021] The drawer connecting fixture 1 is fixed to the drawer, and the rotary clamping cylinder 8 is fixed to the vertical surface of the L-shaped fixing plate 3 using fixing screws 6.
[0022] In operation, the drawer connecting fixture 1 is connected to the drawer, and the L-shaped fixing plate 3 is installed in a fixed position, such as the top plate inside the drawer. The L-shaped fixing plate 3 can also be fixed by fixing screws 6.
[0023] Place the tooling needed for the production line into the drawer and push the drawer in. At this time, the cylinder shaft of the rotary clamping cylinder 8 is extended, and the T-shaped locking fixture 2 is vertical. The T-shaped locking fixture 2 and the drawer connecting fixture 1 will not interfere with each other. After the T-shaped locking fixture 2 is inserted into the T-slot of the drawer connecting fixture 1, the distance between the detection end of the detection sensor 5 and the drawer connecting fixture 1 shortens. The detection sensor 5 senses that the drawer is in place, and the cylinder shaft of the rotary clamping cylinder 8 rotates and retracts, making the T-shaped locking fixture 2 horizontal. The T-shaped locking fixture 2 locks into the T-slot of the drawer connecting fixture 1. At this time, the proximity switch 7 is in place, and the drawer is in a fixed state.
[0024] When tooling is needed for maintenance on the production line, the cylinder shaft of the rotary clamping cylinder 8 extends and rotates, the T-type locking tool 2 is vertical, and the T-type locking tool 2 disengages from the T-slot of the drawer connecting tool 1. At this time, the drawer can be freely pulled out for tooling maintenance or replacement.
[0025] In practical use, drawers can be customized according to different models of tooling to achieve unlocking and locking functions in conjunction with this utility model. The required cost is low, and the drawer status can be controlled by a PLC program through a valve plate, making it highly compatible.
[0026] This utility model uses a rotary clamping cylinder in conjunction with a T-shaped locking fixture, which eliminates jamming during the unlocking or locking process and prevents wobbling caused by gaps in the fixture's positioning due to wear. It offers better stability, facilitates quick fixture replacement, improves work efficiency, and optimizes the user experience.
[0027] This invention utilizes a rotary clamping cylinder to unlock and lock the T-shaped locking fixture and the drawer connection fixture, enabling smooth and rapid unlocking or locking of the drawer and facilitating convenient loading and unloading of fixtures during high-efficiency production. This invention boasts advantages such as simple structure, easy installation, low failure rate, good performance, high positioning accuracy, and high reliability.
Claims
1. A quick-change drawer locking device, comprising a rotary clamping cylinder, an L-shaped fixing plate, a T-shaped locking fixture, a drawer connecting fixture, a limit screw, a detection sensor, and a buffer, characterized in that: The rotary clamping cylinder (8) is placed on the horizontal surface of the L-shaped fixed plate (3) and fixed to the vertical surface of the L-shaped fixed plate (3). The cylinder shaft of the rotary clamping cylinder (8) passes through the vertical surface of the L-shaped fixed plate (3) and is connected to the T-shaped locking fixture (2). The drawer connecting fixture (1) is fixed to the drawer. The side of the drawer connecting fixture (1) facing the L-shaped fixed plate (3) is provided with a T-shaped groove. The T-shaped locking fixture (2) is locked in the T-shaped groove or separated from the T-shaped groove. A buffer (4) is installed at the bottom of the drawer connecting fixture (1). The end of the buffer (4) extends to the front of the vertical surface of the L-shaped fixed plate (3). A limit screw (11) and a detection sensor (5) are installed on the front of the vertical surface of the L-shaped fixed plate (3).
2. The tooling quick-change drawer locking device according to claim 1, characterized in that: A proximity switch (7) is installed on the side of the rotary clamping cylinder (8).
3. The tooling quick-change drawer locking device according to claim 1, characterized in that: The rotary clamping cylinder (8) is equipped with a one-way throttle valve (9).
4. The tooling quick-change drawer locking device according to claim 1, characterized in that: The limiting screw (11) and the detection sensor (5) are located on both sides of the cylinder shaft of the rotary clamping cylinder (8).
5. The tooling quick-change drawer locking device according to claim 1, characterized in that: The drawer connecting fixture (1) is fixed to the drawer and the vertical surface of the rotary clamping cylinder (8) and the L-shaped fixing plate (3) by fixing screws (6).