Quick locking device of bone sawing machine

Abstract

The utility model discloses a bone sawing machine fast locking device which comprises a machine frame and a fast locking supporting plate, the fast locking supporting plate is detachably connected to the inner wall of the machine frame, the back face of the fast locking supporting plate is fixedly connected with a bearing seat, the interior of the fast locking supporting plate is rotationally connected with a synchronizing shaft, and the synchronizing shaft is fixedly connected with the bearing seat. A cam bearing seat is fixedly installed on the front face of the quick locking supporting plate, the synchronizing shaft is connected with a tensioning cam shaft, and the tensioning cam shaft is connected with the cam bearing seat. Compared with the prior art that the height of the upper wheel is increased through threaded connection of the top of the machine frame, the upper wheel is lifted to adjust the tightness degree of the saw blade by arranging the cam structure driven by the operating rod in the machine frame. And a positioning pin can be automatically pushed into a positioning hole through a reset spring and a hinged movable block to complete locking and unlocking, so that the saw blade can be quickly tightened and loosened, the service life is long, and the problems that a previous threaded structure is frequently used, so that abrasion is caused, the position is high and the operation difficulty is high are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of saw blade tensioning of a bone sawing machine, and more specifically, to a quick locking device for a bone sawing machine. Background Art

[0002] The bone sawing machine is applied to the cutting of frozen foods, including bones, meat products, aquatic product processing, etc. The screw rod tensioning and adjusting device at the top of the bone sawing machine is mainly used to facilitate the installation and replacement of the saw blade. The height of the upper wheel hook is adjusted through the screw rod to change the tightness of the saw blade.

[0003] However, the saw blade tensioning and adjusting device of the conventional bone sawing machine is arranged at the top of the machine frame and adjusted through a screw rod. The frequent use of the tensioning device causes the screw rod to be easily worn and the tensioning device to be damaged. At the same time, the height of the tensioning device is relatively high, making it inconvenient to adjust and posing a safety hazard. Moreover, it is difficult to master the tightness when the screw rod rotates. Improper operation will reduce the service life of the motor and the saw blade. Summary of the Utility Model

[0004] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a quick locking device for a bone sawing machine.

[0005] To solve the above problems in the background art, the utility model adopts the following technical solutions;

[0006] The quick locking device for a bone sawing machine includes a machine frame and a quick locking support plate. The quick locking support plate is detachably connected to the inner wall of the machine frame. A bearing seat is fixedly connected to the back of the quick locking support plate. A synchronous shaft is rotatably connected inside the quick locking support plate. A cam bearing seat is fixedly installed on the front of the quick locking support plate. The synchronous shaft is connected to a tensioning cam shaft. The tensioning cam shaft is connected to the cam bearing seat. A rising pull rod is hinged to the bottom of the tensioning cam shaft. An upper wheel hook is installed on the rising pull rod. A movable seat is rotatably connected to the back of the bearing seat. One end of the back of the synchronous shaft penetrates through the quick locking support plate and is installed on the movable seat. A movable block is hinged to the back of the movable seat. An operating rod is threadedly connected to the movable block. A positioning hole is opened on the back of the bearing seat. An installation hole is opened on the movable seat. A positioning pin is arranged inside the installation hole. A top spring is fixedly connected to the positioning pin. One end of the back of the top spring is installed on the front of the movable block. A return spring is installed on the back of the movable seat. The other end of the return spring is fixedly connected to the front of the movable block.

[0007] As a further description of the above technical solution: A ball head is threadedly connected to the end of the operating rod away from the movable block.

[0008] As a further description of the above technical solution: A support bearing is installed on the inner wall of the bearing seat. The synchronous shaft is connected to the inner ring of the support bearing.

[0009] As a further description of the above technical solution: A guide seat is installed on the positioning pin, and the guide seat is located inside the mounting hole and is slidably connected to the inner wall of the mounting hole.

[0010] As a further description of the above technical solution: A slider is installed on the rising pull rod, and the slider is slidably connected to the frame.

[0011] Compared with the prior art, the advantages of the present utility model are as follows:

[0012] In the present utility model, compared with the prior art of lifting the height of the upper wheel by screw connection at the top of the frame, a cam structure driven by an operating rod is arranged inside the frame to lift the upper wheel to adjust the tightness of the saw blade, and the positioning pin can be automatically pushed into the positioning hole by the return spring and the articulated movable block to complete locking and unlocking. Therefore, the tightness of the saw blade can be quickly completed, and the service life is long, avoiding the wear caused by frequent use of the previous screw structure and the high operation difficulty due to the high position. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional structure schematic diagram of the installation of the frame and the quick assembly of the present utility model;

[0014] Figure 2 is an exploded three-dimensional structure schematic diagram of the quick-lock support plate of the present utility model;

[0015] Figure 3 is an exploded three-dimensional structure schematic diagram of the movable seat of the present utility model;

[0016] Figure 4 is an internal three-dimensional structure schematic diagram of the bearing seat of the present utility model;

[0017] Figure 5 is a schematic diagram of the connection structure between the frame and the upper wheel of the present utility model.

[0018] Explanation of the reference numerals in the drawings:

[0019] 1. Frame; 2. Quick-lock support plate; 3. Bearing seat; 4. Synchronous shaft; 5. Cam bearing seat; 6. Tensioning cam shaft; 7. Rising pull rod; 8. Upper wheel hook; 9. Movable seat; 10. Movable block; 11. Positioning hole; 12. Mounting hole; 13. Positioning pin; 14. Ejecting spring; 15. Return spring; 16. Ball head; 17. Support bearing; 18. Guide seat; 19. Slider; 20. Operating rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model;

[0021] Please refer to Figures 1-5, in the present utility model, a quick-lock device for a bone sawing machine includes a machine frame 1 and a quick-lock support plate 2. The quick-lock support plate 2 is detachably connected to the inner wall of the machine frame 1. A bearing seat 3 is fixedly connected to the back surface of the quick-lock support plate 2. A synchronous shaft 4 is rotatably connected inside the quick-lock support plate 2. A cam bearing seat 5 is fixedly installed on the front surface of the quick-lock support plate 2. The synchronous shaft 4 is connected to a tensioning cam shaft 6, and the tensioning cam shaft 6 is connected to the cam bearing seat 5. A rising pull rod 7 is hinged to the bottom of the tensioning cam shaft 6. An upper wheel hook 8 is installed on the rising pull rod 7. A movable seat 9 is rotatably connected to the back surface of the bearing seat 3. One end of the back surface of the synchronous shaft 4 penetrates through the quick-lock support plate 2 and is installed on the movable seat 9. A movable block 10 is hinged to the back surface of the movable seat 9. An operating rod 20 is threadedly connected to the movable block 10. A positioning hole 11 is formed in the back surface of the bearing seat 3. An installation hole 12 is formed in the movable seat 9. A positioning pin 13 is arranged inside the installation hole 12. A top-out spring 14 is fixedly connected to the positioning pin 13. One end of the back surface of the top-out spring 14 is installed on the front surface of the movable block 10. A return spring 15 is installed on the back surface of the movable seat 9. The other end of the return spring 15 is fixedly connected to the front surface of the movable block 10. A sliding block 19 is installed on the rising pull rod 7. The sliding block 19 is slidably connected to the machine frame 1.

[0022] In the bone sawing machine equipment, the rotary saw blade is respectively sleeved and connected to the upper wheel and the lower wheel and is driven. As shown in the document, it is the upper wheel, and the upper wheel hook 8 is connected to the upper wheel;

[0023] When the user needs to install or repair the saw blade, the user presses the operating rod 20 downward on the back of the frame 1. At this time, the movable block 10 rotates accordingly, and the return spring 15 near the bottom of the movable block 10 is squeezed and starts to contract, generating an opposite acting force. The top of the movable block 10 will then separate from the movable seat 9. At this time, the ejecting spring 14 connected to the upper part of the movable block 10 pulls the positioning pin 13 to slide inside the mounting hole 12, so that the positioning pin 13 is withdrawn from the positioning hole 11 in the bearing block 3. At this time, the movable seat 9 is not restricted, and the user rotates the operating rod 20, and the movable seat 9 rotates accordingly, thereby driving the synchronous shaft 4 and the cam bearing block 5 to rotate synchronously. At this time, the tensioning camshaft 6 starts to rotate accordingly, causing the height of the connection end with the rising pull rod 7 to decrease, so that the height of the rising pull rod 7 decreases, and the upper wheel hook 8 naturally drives the upper wheel to move down a certain distance. At this time, the saw blade is loose and can be repaired, disassembled and assembled. When the saw blade needs to be locked, the user rotates the operating rod 20 in the reverse direction. At this time, the return spring 15 is always in a contracted state, and the user needs to continuously press down the operating rod 20. During the rotation process, the synchronous shaft 4 rotates in the reverse direction, and then drives the tensioning camshaft 6 to pull the rising pull rod 7 upward, changing the height of the upper wheel, thereby tightening the saw blade. When rotating to the peak, the user gradually reduces the pressure applied to the operating rod 20, and the return spring 15 gradually extends, causing the movable block 10 to rotate inside the movable seat 9. The top of the movable block 10 gradually fits with the movable seat 9, thereby pushing the ejecting spring 14, and the positioning pin 13 enters the positioning hole 11 to complete the locking.

[0024] In the present utility model, compared with the prior art of lifting the height of the upper wheel by means of threaded connection at the top of the frame 1, a cam structure driven by the operating rod 20 is provided inside the frame 1 to lift the upper wheel to adjust the tightness of the saw blade, and the positioning pin 13 can be automatically pushed into the positioning hole 11 to complete locking and unlocking through the return spring 15 and the hinged movable block 10. Therefore, the tightness of the saw blade can be quickly completed, and the service life is long, avoiding the wear caused by frequent use of the previous threaded structure and the high operation difficulty due to the high position.

[0025] Please refer to Figure 1 and 2 , wherein: a ball head 16 is threadedly connected to one end of the operating rod 20 away from the movable block 10.

[0026] In the present utility model, the ball head 16 can play a limiting role when the user rotates or presses the operating rod 20, preventing the user from losing control.

[0027] Please refer to Figure 4 , wherein: a support bearing 17 is installed on the inner wall of the bearing block 3, and the synchronous shaft 4 is connected to the inner ring of the support bearing 17.

[0028] In the present utility model, the provision of the support bearing 17 can improve the stability of the synchronizing shaft 4, thereby enhancing the service life of the overall structure.

[0029] Please refer to Figure 3 and 4 , wherein: a guide seat 18 is mounted on the positioning pin 13, and the guide seat 18 is located inside the mounting hole 12 and is slidably connected to the inner wall of the mounting hole 12.

[0030] In the present utility model, the provision of the guide seat 18 can restrict the positioning pin 13, enabling the positioning pin 13 to always remain inside the mounting hole 12 and move stably.

[0031] The above is the preferred specific embodiment of the present utility model; however, the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A quick-lock device for a bone saw, comprising a frame (1) and a quick-lock support plate (2), wherein the quick-lock support plate (2) is detachably connected to the inner wall of the frame (1), characterized in that: The back of the quick lock support plate (2) is fixedly connected to a bearing seat (3), the inside of the quick lock support plate (2) is rotatably connected to a synchronous shaft (4), the front of the quick lock support plate (2) is fixedly installed with a cam bearing seat (5), the synchronous shaft (4) is connected to a tensioning cam shaft (6), the tensioning cam shaft (6) is connected to the cam bearing seat (5), the bottom of the tensioning cam shaft (6) is hinged with a lifting rod (7), the lifting rod (7) is installed with an upper wheel hook (8), the back of the bearing seat (3) is rotatably connected to a movable seat (9), one end of the back of the synchronous shaft (4) passes through the quick lock support plate (2) and is installed on the movable seat (9 ), a movable block (10) is hinged on the back of the movable seat (9), an operating rod (20) is threadedly connected to the movable block (10), a positioning hole (11) is provided on the back of the bearing seat (3), a mounting hole (12) is provided on the movable seat (9), a positioning pin (13) is provided inside the mounting hole (12), an ejection spring (14) is fixedly connected to the positioning pin (13), one end of the back of the ejection spring (14) is installed on the front of the movable block (10), a return spring (15) is installed on the back of the movable seat (9), and the other end of the return spring (15) is fixedly connected to the front of the movable block (10).

2. The bone sawing machine quick lock device according to claim 1, characterized in that: One end of the operating rod (20) away from the movable block (10) is threadedly connected with a ball head (16).

3. The quick locking device for a bone saw according to claim 1, characterized in that: A support bearing (17) is installed on the inner wall of the bearing seat (3), and the synchronous shaft (4) is connected to the inner ring of the support bearing (17).

4. The bone sawing machine quick lock device according to claim 1, characterized in that: A guide seat (18) is installed on the positioning pin (13), and the guide seat (18) is located inside the mounting hole (12) and is slidably connected to the inner wall of the mounting hole (12).

5. The bone sawing machine quick lock device according to claim 1, characterized in that: A sliding block (19) is installed on the lifting rod (7), and the sliding block (19) is slidably connected to the frame (1).

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