A mechanism suitable for automatic four-axis tightening quick-change sleeve

Abstract

The utility model provides a kind of mechanism suitable for automatic four-axis tightening quick-change sleeve, it is related to quick-change sleeve technical field, including tightening shaft, sleeve and cylindrical pin, the bottom end of tightening shaft is equipped with sleeve, and it is connected each other through cylindrical pin, stop block between tightening shaft and sleeve, the inside of cylindrical pin is equipped with the self-locking mechanism matched with stop block, the self-locking mechanism includes top block, movable rod, spring and conical head, and the inside of cylindrical pin is slidably connected with top block;The utility model person removes two sealing rings, then removes two cylindrical pins, finally removes sleeve, places stop block in the new sleeve square groove, aligns the hole of sleeve with the connecting hole of tightening shaft, the connecting hole of stop block is aligned with the connecting hole of tightening shaft, after two connecting holes are aligned, two cylindrical pins are inserted into pin hole, finally two sealing rings are sleeved into the O type ring groove of tightening shaft, and it is convenient to disassemble and assemble between tightening shaft and sleeve.

Description

Technical Field

[0001] This utility model relates to the field of quick-change sleeve technology, and in particular to a mechanism suitable for automatic four-axis tightening of quick-change sleeves. Background Technology

[0002] Automatic four-axis typically refers to automated equipment with four motion axes, such as four-axis machining centers, four-axis drones, or four-axis robots. Taking a four-axis machining center as an example, it adds a rotary axis to a three-axis system, enabling the machining of complex curved surfaces and improving accuracy and efficiency. A four-axis drone uses four motors to drive propellers, achieving stable flight and flexible control. A four-axis robot completes tasks such as handling and welding through four-axis linkage, and features low cost, high efficiency, and strong stability. When changing sleeves in automated equipment, it is often necessary to manually insert the hexagonal sleeve into the tightening shaft and fix it by tightening the screw or nut. Existing sleeve changing technology involves manually removing the screw and then taking off the sleeve. The manual disassembly process is time-consuming and inefficient. Currently, existing sleeve changing mechanisms do not take into account the cycle time of automated equipment, resulting in a waste of mechanical work efficiency. Therefore, this utility model proposes a mechanism suitable for automatic four-axis tightening quick-change sleeves to solve the above problems. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a mechanism suitable for automatic four-axis tightening quick-change sleeves, thereby solving the problem of long and inefficient manual disassembly processes in the prior art, which involve manually removing screws and then taking off the sleeve.

[0004] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a mechanism suitable for automatic four-axis tightening quick-change sleeve, including a tightening shaft, a sleeve and a cylindrical pin, wherein the bottom end of the tightening shaft is provided with a sleeve, and the tightening shaft and the sleeve are connected to each other through a cylindrical pin and an anti-rotation block, and the cylindrical pin is provided with a self-locking mechanism that matches the anti-rotation block.

[0005] A further improvement is made in that: the self-locking mechanism includes a top block, a movable rod, a spring, and a conical head; the top block is slidably connected inside the cylindrical pin; the movable rod is slidably connected to the right end of the cylindrical pin; the spring is sleeved on the right end of the movable rod; and the conical head is fixedly connected to the left end of the movable rod.

[0006] A further improvement is that the top of the connecting hole is provided with a rectangular groove, and the top of the top block is engaged with the inner side of the rectangular groove, so that the spring is in a compressed state.

[0007] A further improvement is that: the cylindrical pin has a groove inside, and a retaining edge is fixedly connected to the outside of the movable rod, and the outside of the movable rod is slidably connected to the inside of the groove through the retaining edge.

[0008] A further improvement is that the bottom end of the tightening shaft, the top end of the sleeve, and the interior of the anti-rotation block are all provided with connecting holes, and their positions overlap. One end of the cylindrical pin passes through the interior of the connecting hole.

[0009] A further improvement is that the bottom end of the sleeve is provided with a hexagonal groove, the outer side of the tightening shaft is connected to the output end of the rotary motor through a flange, and the rotary motor is connected to the cylinder through a connecting bracket.

[0010] A further improvement is that sealing rings are symmetrically fitted at both ends of the cylindrical pin, and the two ends of the cylindrical pin are engaged with the two ends of the connecting holes on the cylindrical pin through the sealing rings.

[0011] The beneficial effects of this utility model are as follows: Pulling the movable rod from the inside to the outside of the cylindrical pin causes the conical head to no longer push the top block out of the cylindrical pin. At this time, the cylindrical pin can be inserted into the connecting hole, and the spring further contracts inward. Then, the movable rod is released, and the elastic force generated by the spring drives it to move into the inside of the cylindrical pin. At the same time, the movable rod pushes the top block out of the cylindrical pin through the conical head. The top of the top block is pressed tightly against the inside of the rectangular groove, so that the position of the cylindrical pin and the anti-rotation block is locked together. The two ends of the cylindrical pin pass through the inside of the tightening shaft and the sleeve, respectively, to connect the tightening shaft, the sleeve and the anti-rotation block into one unit. When disconnecting, the movable rod is pulled from the inside to the outside of the cylindrical pin again, so that the conical head no longer pushes the top block out of the cylindrical pin, and the top block no longer presses the anti-rotation block tightly. The cylindrical pin is pulled out from the connection between the tightening shaft and the sleeve, which facilitates the disassembly and assembly of the tightening shaft and the sleeve. Attached Figure Description

[0012] Figure 1 This is the front view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is an assembly diagram of the present invention; Figure 4 This is a schematic diagram of the connection mechanism structure according to Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of the connection mechanism structure in Embodiment 2 of this utility model.

[0013] The components are: 1. Tightening shaft; 2. Sleeve; 3. Cylindrical pin; 4. Anti-rotation block; 5. Hexagonal groove; 6. Connecting hole; 7. Rectangular groove; 8. Top block; 9. Movable rod; 10. Spring; 11. Side flange; 12. Slide groove; 13. Conical head; 14. Sealing ring. Detailed Implementation

[0014] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0015] according to Figure 1-4 As shown, this embodiment proposes a mechanism suitable for an automatic four-axis tightening quick-change sleeve, including a tightening shaft 1, a sleeve 2, and a cylindrical pin 3. The mechanism is characterized in that: the bottom end of the tightening shaft 1 is provided with the sleeve 2; the tightening shaft 1 and the sleeve 2 are connected to each other via the cylindrical pin 3 and an anti-rotation block 4; the cylindrical pin 3 has a self-locking mechanism that matches the anti-rotation block 4; the bottom end of the tightening shaft 1, the top end of the sleeve 2, and the interior of the anti-rotation block 4 are all provided with connecting holes 6, and their positions overlap; one end of the cylindrical pin 3 extends out of the interior of the connecting hole 6. When using this four-axis tightening quick-change sleeve, first... Insert the anti-rotation block 4 into the top of the sleeve 2, then insert the sleeve 2 together with the anti-rotation block 4 into the bottom of the tightening shaft 1. Next, insert the cylindrical pin 3 into the connection between the tightening shaft 1 and the sleeve 2. Finally, the self-locking mechanism locks the positions of the tightening shaft 1, the sleeve 2, the cylindrical pin 3 and the anti-rotation block 4, thus completing the connection between the tightening shaft 1 and the sleeve 2. To disconnect, simply release the locking state of the self-locking mechanism and pull the cylindrical pin 3 out from the connection between the tightening shaft 1 and the sleeve 2. This solves the problem of long time and low efficiency in the existing technology where the screws are removed manually and the sleeve is taken off.

[0016] The self-locking mechanism includes a top block 8, a movable rod 9, a spring 10, and a conical head 13. The top block 8 is slidably connected to the inside of the cylindrical pin 3. The movable rod 9 is slidably connected to the right end of the cylindrical pin 3. The spring 10 is sleeved on the right end of the movable rod 9. The conical head 13 is fixedly connected to the left end of the movable rod 9. The top of the connecting hole 6 is provided with a rectangular groove 7. The top of the top block 8 is engaged with the inner side of the rectangular groove 7. The spring 10 is in a compressed state. Pulling the movable rod 9 from the inside of the cylindrical pin 3 to move it outwards, so that the conical head 13 no longer pushes the top block 8 outwards from the outside of the cylindrical pin 3. At this time, the cylindrical pin 3 can be inserted into the inside of the connecting hole 6, and the spring 10 further contracts inwards. Then, the movable rod 9 is released, and the spring 10 generates... The elastic force drives it to move into the inside of the cylindrical pin 3. At the same time, the movable rod 9 pushes the top block 8 out of the outside of the cylindrical pin 3 through the conical head 13. The top of the top block 8 is pressed tightly against the inside of the rectangular groove 7, so that the position of the cylindrical pin 3 and the anti-rotation block 4 is locked together. The two ends of the cylindrical pin 3 pass through the inside of the tightening shaft 1 and the sleeve 2 respectively, so as to connect the tightening shaft 1, the sleeve 2 and the anti-rotation block 4 into one unit. When the connection is released, the movable rod 9 is pulled again to move from the inside of the cylindrical pin 3 outward, so that the conical head 13 no longer pushes the top block 8 out of the outside of the cylindrical pin 3, and the top block 8 no longer presses the anti-rotation block 4 tightly. The cylindrical pin 3 is pulled out from the connection between the tightening shaft 1 and the sleeve 2, which facilitates the disassembly and assembly of the tightening shaft 1 and the sleeve 2.

[0017] The cylindrical pin 3 has a sliding groove 12 inside, and the outer side of the movable rod 9 is fixedly connected to a retaining edge 11. The outer side of the movable rod 9 is slidably connected to the inside of the sliding groove 12 through the retaining edge 11. The retaining edge 11 and the sliding groove 12 can restrict the movement trajectory of the movable rod 9, so that the movable rod 9 moves within a set range inside the cylindrical pin 3, preventing the movable rod 9 from suddenly falling out of the inside of the cylindrical pin 3, and making the wide and narrow ends of the conical head 13 contact the bottom end of the top block 8 respectively, so as to realize the lifting and lowering movement of the top block 8.

[0018] The bottom end of the sleeve 2 is provided with a hexagonal groove 5. The outer side of the tightening shaft 1 is connected to the output end of the rotary motor through a flange. The rotary motor is connected to the cylinder through a connecting frame. The output end of the cylinder drives the rotary motor to move downward through the connecting frame. The tightening shaft 1 moves downward with the rotary motor until the hexagonal groove 5 at the bottom end of the sleeve 2 engages with the nut. The rotary motor can drive the tightening shaft 1 and the sleeve 2 to rotate, and the cylinder drives the tightening shaft 1 and the sleeve 2 to move upward synchronously, so as to automatically unscrew the nut upward.

[0019] according to Figure 5 As shown in the second embodiment, a mechanism suitable for automatic four-axis tightening quick-change sleeves is proposed, including a tightening shaft 1, a sleeve 2, and a cylindrical pin 3. The mechanism is characterized in that: the bottom end of the tightening shaft 1 is provided with a sleeve 2; the tightening shaft 1 and the sleeve 2 are connected to each other by a cylindrical pin 3 and an anti-rotation block 4; the bottom end of the tightening shaft 1, the top end of the sleeve 2, and the interior of the anti-rotation block 4 are all provided with connecting holes 6, and their positions overlap; one end of the cylindrical pin 3 extends out of the interior of the connecting hole 6. In use, the four-axis tightening quick-change sleeve is first inserted into the top end of the sleeve 2, then the sleeve 2 together with the anti-rotation block 4 is inserted into the bottom end of the tightening shaft 1, and finally the cylindrical pin 3 is inserted into the connection between the tightening shaft 1 and the sleeve 2, thus completing the connection between the tightening shaft 1 and the sleeve 2.

[0020] The two ends of the cylindrical pin 3 are symmetrically fitted with sealing rings 14, and the two ends of the cylindrical pin 3 are engaged with the two ends of the connecting hole 6 on the cylindrical pin 3 through the sealing rings 14.

[0021] When the equipment stops working, manually remove the two sealing rings 14, then remove the two cylindrical pins 3, and finally remove the sleeve 2. Place the anti-rotation block 4 into the square groove of the new sleeve 2, align the hole of the sleeve 2 with the connection hole 6 of the tightening shaft 1, and align the connection hole 6 of the anti-rotation block 4 with the connection hole 6 of the tightening shaft 1. After aligning the two connection holes 6, insert the two cylindrical pins 3 into the pin holes, and finally put the two sealing rings 14 into the O-ring groove of the tightening shaft 1. This completes the process.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanism suitable for automatic four-axis tightening quick-change sleeve, comprising a tightening shaft (1), a sleeve (2) and a cylindrical pin (3), characterized in that: The bottom end of the tightening shaft (1) is provided with a sleeve (2). The tightening shaft (1) and the sleeve (2) are connected to each other by a cylindrical pin (3) and an anti-rotation block (4). The cylindrical pin (3) is provided with a self-locking mechanism that matches the anti-rotation block (4). The self-locking mechanism includes a top block (8), a movable rod (9), a spring (10), and a conical head (13). The top block (8) is slidably connected inside the cylindrical pin (3). The movable rod (9) is slidably connected to the right end of the cylindrical pin (3). The spring (10) is sleeved on the right end of the movable rod (9). The conical head (13) is fixedly connected to the left end of the movable rod (9).

2. A mechanism suitable for automatic four-axis tightening quick-change sleeve according to claim 1, characterized in that: The bottom end of the tightening shaft (1), the top end of the sleeve (2), and the interior of the anti-rotation block (4) are all provided with connecting holes (6), and their positions overlap. One end of the cylindrical pin (3) passes through the interior of the connecting hole (6).

3. A mechanism suitable for automatic four-axis tightening quick-change sleeve according to claim 2, characterized in that: The top of the connecting hole (6) is provided with a rectangular groove (7), and the top of the top block (8) is engaged with the inner side of the rectangular groove (7), and the spring (10) is in a compressed state.

4. A mechanism suitable for automatic four-axis tightening quick-change sleeve according to claim 1, characterized in that: The cylindrical pin (3) has a groove (12) inside, and the movable rod (9) is fixedly connected to a retaining edge (11) on the outside. The outside of the movable rod (9) is slidably connected to the inside of the groove (12) through the retaining edge (11).

5. The mechanism for automatic four-axis tightening quick-change sleeves according to claim 1, characterized in that: The bottom end of the sleeve (2) is provided with a hexagonal groove (5). The outer side of the tightening shaft (1) is connected to the output end of the rotary motor through a flange. The rotary motor is connected to the cylinder through a connecting frame.

6. The mechanism for automatic four-axis tightening quick-change sleeves according to claim 4, characterized in that: The two ends of the cylindrical pin (3) are symmetrically fitted with sealing rings (14), and the two ends of the cylindrical pin (3) are engaged with the two ends of the connecting hole (6) on the cylindrical pin (3) through the sealing rings (14).

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