Tool Holder Chain Plate Locking Mechanism

Abstract

The knife sheath chain plate locking mechanism includes a chain plate mechanism. The chain plate mechanism includes a pair of chain plates arranged in parallel. The chain plates are equipped with bearings through a core shaft and are used to cooperate with the guide rail plate for movement. The knife sheath assembly is located on the chain plates. A positioning key is fixed on the knife sheath assembly. The spring seat is located between the two chain plates. One side of the spring seat is fixedly connected to one of the chain plates. The other side of the spring seat is rotatably connected to a locking hook through a locking hook core shaft. One end of the locking hook, the hook body part, matches the positioning key. A first positioning pin is fixed at the other end of the locking hook. There is a spring in the spring seat. One end of the spring is sleeved on the first positioning pin and the spring end abuts against one end of the locking hook. A spring limit plate is fixed on the spring seat. The other end of the spring abuts against the spring limit plate. The spring limit plate is fixed with a second limit pin, and the other end of the spring is sleeved on the second limit pin; A fixed bracket is provided on the knife magazine body and is fixed to the bracket together with the cylinder. The outer end of the piston rod of the cylinder is matched with the end of the locking hook. The structure is simple, and the action is flexible and reliable.

Description

Technical Field

[0001] The present invention relates to a locking mechanism, belonging to the technical field of the tool magazine of machining equipment, in particular to a locking mechanism for a tool sleeve chain plate. Background Art

[0002] The CNC machining industry has developed rapidly, and the demand forms for the tool magazines of the mainframes of CNC machining equipment are becoming more and more diverse. Different from the previous structure where the tool sleeves are enclosed within the tool magazine frame, that is, the tool sleeve assembly runs within the tool magazine along with the chain plate mechanism, the tool sleeve assembly is fixedly installed on the chain plate. When changing tools, the chain plate mechanism runs to an appropriate position and stops to perform the tool change operation, and the tool sleeve assembly does not leave the chain plate. However, for some non-standard customized tool magazines, it is often necessary for the tool sleeve assembly to leave the constraints of the chain plate and the tool magazine to complete the tool change operation during tool change. The existing closed limiting plate structure can no longer meet the requirements, and it is necessary to develop a mechanism that can achieve mechanical locking of the tool sleeve and the chain plate and can be unlocked and disengaged at a specified position for tool change in response to this situation. Summary of the Invention

[0003] The purpose of the present invention is to provide a locking mechanism for a tool sleeve chain plate that is simple in structure, flexible and reliable in operation, and can both fix the tool sleeve assembly and the chain plate to each other and disengage according to the tool change requirements.

[0004] The locking mechanism for a tool sleeve chain plate of the present invention includes a chain plate mechanism located within the tool magazine body and capable of running along a guide rail plate. The chain plate mechanism includes a pair of chain plates arranged in parallel, the chain plates are connected by a chain plate core shaft, a spacer sleeve is sleeved on the chain plate core shaft between the two chain plates, bearings matching the guide rail plate are respectively installed at both ends of the chain plate core shaft, a tool sleeve assembly is installed on the chain plate, the tool sleeve assembly is seated on the chain plate, a positioning key is fixed on the tool sleeve assembly, a spring seat is located between the two chain plates, one side of the spring seat is fixedly connected to one of the chain plates, the other side of the spring seat is rotatably connected to a locking hook through a locking hook core shaft, one end of the locking hook, the hook body part, matches the positioning key, a first positioning pin is fixed at the other end of the locking hook, a spring is provided within the spring seat, one end of the spring is sleeved on the first positioning pin and the spring end abuts against one end of the locking hook, a spring limiting plate is fixed on the spring seat, the other end of the spring abuts against the spring limiting plate, a second limiting pin is fixed on the spring limiting plate, and the other end of the spring is sleeved on the second limiting pin; a bracket is fixed on the tool magazine body, a cylinder connected to a pneumatic control device is fixed on the bracket, and the outer end of a piston rod matching the cylinder matches the end of the locking hook.

[0005] Compared with the prior art, the locking mechanism for a tool sleeve chain plate of the present invention can relatively fixedly lock the tool sleeve assembly and the chain plate, and can also be unlocked and disengaged as needed to meet the requirements for the tool sleeve assembly to partially leave the constraints of the chain plate and the tool magazine to complete the tool change operation in a non-standard customized tool magazine, and has the advantages of simple structure, flexible and reliable operation. Brief Description of the Drawings

[0006] Figure 1 is a schematic cross-sectional view of a specific embodiment of the present invention.

[0007] Figure 2 is Figure 1 a schematic perspective view of the spring seat, locking hook, locking hook core shaft, and spring limit plate shown in

[0008] Figure 3 is Figure 1 a schematic perspective view of the link plate mechanism, tool sleeve assembly, cylinder, and bracket shown in

[0009] Figure 4 is Figure 3 a schematic view of the connection structure between the perspective structure shown and the tool magazine body.

[0010] Figure 5 is Figure 1 a schematic perspective view of the structure shown in Specific Embodiment

[0011] As Figures 1 to 5As shown in the figure: The knife sheath chain plate locking mechanism of the present invention includes a chain plate mechanism located in the knife magazine body 19 and capable of running along the guide rail plate 20. The chain plate mechanism includes a pair of chain plates 3 arranged in parallel, and the chain plates 3 are connected by a chain plate core shaft 6. A spacer sleeve 4 is sleeved on the chain plate core shaft 6 between the two chain plates 3. Bearings 5 matching the guide rail plate 20 are respectively installed at both ends of the chain plate core shaft 6, and the movement of the chain plate assembly along the guide rail plate 20 is realized through these bearings 5. A knife sheath assembly 1 is installed on the chain plate 3. The knife sheath assembly 1 is located on the chain plate 3, and its fixed locking structure is as follows: A positioning key 7 is fixed on the knife sheath assembly 1 through a connecting bolt 22. The spring seat 10 is located between the two chain plates 3, and one side of the spring seat 10 is fixedly connected to one of the chain plates 3 through a fixing bolt 17. The other side of the spring seat 10 is rotatably connected to a locking hook 2 through a locking hook core shaft 8, and the hook body part at one end of the locking hook 2 matches the positioning key 7. A first positioning pin 12 is fixed at the other end of the locking hook 2. A spring 11 is arranged in the spring seat 10, one end of the spring 11 is sleeved on the first positioning pin 12 and the end of the spring 11 abuts against one end of the locking hook 2. A spring limiting plate 9 is fixed on the spring seat 10 through a second screw 16, the other end of the spring 11 abuts against the spring limiting plate 9, a second limiting pin 21 is fixed on the spring limiting plate 9, and the other end of the spring 11 is sleeved on the second limiting pin 21. A locking pin limiting plate 13 is fixedly connected to the spring seat 10 through a first screw 15 for lateral limiting of the rotation of the locking hook 2. Under the action of the spring 11, it buckles on the positioning key 7 installed on the knife sheath assembly 1. The contact surface between the locking hook 2 and the positioning key 7 is an arc surface, realizing the relative fixed locking between the knife sheath assembly 1 and the chain plate 3. The first positioning pin 12 and the second limiting pin 21 guide the spring 11.

[0012] A bracket 18 is fixed on the knife magazine body 19, a cylinder 14 connected to the pneumatic control device is fixed on the bracket 18, and the outer end of the piston rod 23 matching the cylinder 14 matches the end of the locking hook 2.

[0013] During the working process, in the free state, the knife sheath assembly 1 and the chain plate 3 are in the locked state. When the chain plate is in the tool change position, the piston rod of the unlocking cylinder 14 extends, pushing the locking hook 2 to disengage it from the positioning key 7 on the knife sheath assembly 1, realizing unlocking. In the locked state, the chain plate contacts the positioning surface outside the knife sheath and realizes angular and axial positioning. Under the action of the spring 11, the locking hook 2 hooks the positioning key 7 installed on the knife sheath assembly 1, so that complete positioning in three directions between the knife sheath assembly and the chain plate 3 can be realized.

Claims

1. A locking mechanism for a knife sheath chain plate, comprising a chain plate mechanism located within a knife magazine body (19) and capable of running along a guide rail plate (20). The chain plate mechanism includes a pair of chain plates (3) arranged in parallel. The chain plates (3) are connected by a chain plate core shaft (6). A spacer sleeve (4) is sleeved on the chain plate core shaft (6) between the two chain plates (3). Bearings (5) mating with the guide rail plate (20) are respectively installed at both ends of the chain plate core shaft (6). A knife sheath assembly (1) is installed on the chain plate (3), and it is characterized in that: The described tool sleeve assembly (1) is located on the chain plate (3). A positioning key (7) is fixed on the tool sleeve assembly (1). The spring seat (10) is located between two chain plates (3). One side of the spring seat (10) is fixedly connected to one of the chain plates (3). The other side of the spring seat (10) is rotatably connected to a locking hook (2) through a locking hook core shaft (8). One end of the locking hook (2), the hook body part, matches with the positioning key (7). A first positioning pin (12) is fixed at the other end of the locking hook (2). A spring (11) is arranged in the spring seat (10). One end of the spring (11) is sleeved on the first positioning pin (12) and the end head of the spring (11) abuts against one end of the locking hook (2). A spring limit plate (9) is fixed on the spring seat (10). The other end of the spring (11) abuts against the spring limit plate (9). A second limit pin (21) is fixed on the spring limit plate (9). The other end of the spring (11) is sleeved on the second limit pin (21). A bracket (18) is fixed on the tool magazine body (19). A cylinder (14) connected to the pneumatic control device is fixed on the bracket (18). The outer end of the piston rod (23) matching with the cylinder (14) matches with the end of the locking hook (2).

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