CN204419898U - A new connection structure between the air shaft and the chuck body - Google Patents

Abstract

The utility model discloses a novel connection structure of physiosis axle and chuck body, its technical scheme's main points are including the chuck body, it has the gland to articulate through the round pin axle on the chuck body, and rotation through the gland compresses tightly the physiosis axle on the chuck body still be equipped with the fitting pin that can stir on the chuck body the non-articulated one end of gland is equipped with the fitting hole, the fitting pin that can stir inserts the downthehole general of locking the gland locking. The utility model discloses an innovation of structure, with original full gland mode fastening change rotatable gland fastening into and change single screw thread fastening into the fitting pin locking that can stir, increase the slip friction stroke of pine process of taking off, become the inefficacy form of process predictability with instantaneous inefficacy form, adapt to the development requirement of high-accuracy coating machine.

Description

A new connection structure between the air shaft and the chuck body

【Technical field】

The utility model relates to a connection structure between an air expansion shaft and a chuck body, in particular to a connection structure between an air expansion shaft and a chuck body of a coating machine.

【Background technique】

The existing locking structure of the air expansion shaft mostly adopts the flange screw fastening or arc-shaped gland type. The former has good fastening performance because of the large number of thread locking, but the locking method is cumbersome and the flange The volume of the plate is large and the weight is also relatively large. The flange plate needs to be disassembled every time, which has a certain risk of work injury; the latter only has one or two threaded locking glands compared to the former, and the locking method is convenient without disassembling the heavy parts such as flanges. , but relatively speaking, the air shaft vibrates and shakes due to the centrifugal force and its own quality inhomogeneity during the rotation process, so that the air shaft is partially or completely loose, which has hidden dangers in production safety and cannot adapt to high-precision Coating machine development requirements.

The utility model is made based on this situation.

【Content of utility model】

The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a new connection structure between the air shaft and the chuck body which can be locked quickly and safely to prevent loosening due to vibration.

The utility model is achieved through the following technical solutions:

A novel connection structure between an air expansion shaft and a chuck body is characterized in that it includes a chuck body 2, and a gland 3 is hinged on the chuck body 2 through a pin 4, and the gland 3 is rotated to The air expansion shaft 1 is pressed tightly on the chuck body 2, and a movable locking pin 9 is also provided on the chuck body 2, and a locking hole is provided at the non-hinged end of the gland 3 5. The movable locking pin 9 is inserted into the locking hole 5 to lock the gland 3 .

The novel connection structure between the air shaft and the chuck body as described above is characterized in that: the movable locking pin 9 includes a lower pin 901 inserted into the locking hole 5 and the lower pin is toggled. 901 rotates the toggle lever 902, on the chuck body 2 and gland 3 there is a neutral slot 10 that limits the movement of the toggle lever 902, on the toggle lever 902 there is a Said toggle rod 902 is in the neutral slot 10 so that it cannot be arbitrarily toggled on the compression nut 903 .

The connection structure between the new air shaft and the chuck body as described above is characterized in that: the neutral groove 10 is divided into a limiting section provided on the gland 3 and a spacer section provided on the chuck body 2. The toggle section on the neutral slot 10 is provided with a step 11 for the compression nut 903 to compress.

The novel connection structure between the air shaft and the chuck body as described above is characterized in that: the fixedly connected chuck body 2 and the gland 3 form an assembly for compressing the air shaft 1 on its end surface. hole 6, the assembly hole 6 is provided with a key 8 that drives the air expansion shaft 1 to rotate together with the chuck body 2.

The novel connection structure between the air shaft and the chuck body as described above is characterized in that: the assembly hole 6 is provided with a shaft clamp 7 that limits the axial displacement of the air shaft 1, and the end of the air shaft 1 There is an annular hole 12 matched with the shaft clamp 7 at the top.

The novel connection structure between the air expansion shaft and the chuck body as described above is characterized in that: the shaft clamp 7 is arc-shaped and fixed on the lower part of the inner wall of the assembly hole 6 .

The novel connection structure between the air shaft and the chuck body as described above is characterized in that: the side of the air shaft 1 is provided with a lower half keyway 13 for installing the key 8, and the inner wall of the assembly hole 6 is provided with a mounting The upper half keyway 16 of the key 8 , the lower half keyway 13 and the upper half keyway 16 are paired to form a hole for installing the key 8 .

The novel connection structure between the air expansion shaft and the chuck body as described above is characterized in that the upper half keyway 16 is arranged on the upper part of the inner wall of the assembly hole 6 opposite to the installation position of the shaft clamp 7 .

The novel connection structure between the air shaft and the chuck body as described above is characterized in that the toggle lever 902 is perpendicular to the lower pin 901 .

The above novel connection structure between the air expansion shaft and the chuck body is characterized in that: the end surface of the pin shaft 4 is provided with a threaded hole 14 for inserting and taking out the pin shaft 4 .

Compared with the prior art, the utility model has the following advantages:

1. Through the innovation of the structure, the utility model changes the original full-gland fastening method into a rotatable gland fastening and changes the single-thread fastening into a movable locking pin for locking, increasing the sliding during the loosening process The friction stroke changes the instantaneous failure form into a predictable failure form in the process, which meets the development requirements of high-precision coating machines.

2. The disassembly and assembly of the utility model does not need to dismantle a part. When disassembling the air shaft, you only need to loosen the compression nut to make it leave the step, and turn the toggle lever from the limit section of the neutral slot to the toggle section to move Push the lower pin out of the locking hole on the gland, and then turn the gland to release the air shaft; similarly, when assembling the air shaft, you only need to rotate the gland around the pin shaft to compress the air shaft, and then turn the lower pin to For the limiting section of the neutral slot, just tighten the compression nut on the neutral slot to fix the gland and the chuck body, and the operation is simple and convenient.

3. One end of the gland of the utility model can be rotated and the other end can be locked. The single thread locking method is changed to a movable locking pin for locking. During the loosening process, the sliding friction stroke is increased, and at the same time it can be moved. The locking pin rotates a certain swing angle θ and then continues to press to make the pressing effect longer and avoid vibration. Compared with the old structure, when the thread is loosened, the old structure is only subjected to the thread force, and the new structure has an extra sliding stroke, which increases the lateral sliding friction and makes the loosening time longer; in addition, the locking pin that can be toggled during the loosening process passes through The rotation has a certain swing angle, and the continuous pressing with the steps avoids vibration and can be predicted and re-locked, while the old structure often has vibration when it starts to loosen, which is difficult to observe. The new structure is easy to disassemble, and the safety performance is greatly improved, which can ensure high-quality safety production and meet the development requirements of high-precision coating machines.

【Description of drawings】

Fig. 1 is a perspective view of the utility model;

Fig. 2 is an exploded view 1 of the utility model;

Fig. 3 is an exploded view 2 of the utility model;

Fig. 4 is the plane view when the utility model unclamps the air expansion shaft;

Fig. 5 is a plan view of the connection structure of the present invention when it swings at an angle of θ, in which the arrow marks the outward swinging direction of the movable locking pin;

Fig. 6 is an exploded view of the toggleable locking pin of the present invention.

In the figure: 1 is the air expansion shaft; 2 is the chuck body; 3 is the gland; 4 is the pin shaft; 5 is the locking hole; 6 is the assembly hole; 7 is the shaft card; 8 is the key; 9 is the toggle 901 is the lower pin; 902 is the toggle rod; 903 is the compression nut; 10 is the neutral groove; 11 is the step; 12 is the annular hole; 13 is the lower half keyway; 14 is the threaded hole; 15 is Counterbore; 16 is the upper half keyway.

【Detailed ways】

The technical features of the utility model will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can understand.

A new type of connection structure between the air shaft and the chuck body, including a chuck body 2, on which the chuck body 2 is hinged with a gland 3 through a pin shaft 4, through the rotation of the gland 3, the air shaft 1 Compressed on the chuck body 2, a movable locking pin 9 is also provided on the chuck body 2, and a locking hole 5 is provided at the non-hinged end of the gland 3. A movable locking pin 9 is inserted into the locking hole 5 to lock the gland 3 .

The toggleable locking pin 9 includes a lower pin 901 inserted into the locking hole 5 and a toggle rod 902 for turning the lower pin 901. The toggle rod 902 is a screw rod. The chuck body 2 and the gland 3 are provided with a neutral slot 10 that limits the movement of the toggle lever 902, and the toggle lever 902 is provided with a spacer that can compress the toggle lever 902 in the neutral slot 10. Make it can not arbitrarily toggle the compression nut 903.

A nut sleeve is also provided below the compression nut 903 for pressing on the step 11. The function of the nut sleeve is to protect the external thread exposed on the toggle rod 902. The nut sleeve can also be used with the compression nut. 903 are made into one piece. The toggling lever 902 can also be made into one piece with the lower latch 901 .

The neutral slot 10 is divided into a limiting section arranged on the gland 3 and a toggle section arranged on the chuck body 2, the limiting section of the neutral slot 10 is provided with a The compression nut 903 compresses the step 11 . The toggle lever 902 is toggled to the toggle section of the neutral slot 10 to push the lower pin 901 out of the locking hole 5 to loosen the gland 3 and further release the air shaft 1 from the chuck body. 2 and release it.

The fixedly connected chuck body 2 and the gland 3 form an assembly hole 6 for pressing the air shaft 1 on the end surface thereof, and the assembly hole 6 is provided with an assembly hole 6 that drives the air shaft 1 to move with it. The key 8 that the chuck body 2 rotates together.

The assembly hole 6 is provided with a shaft clamp 7 that limits the axial displacement of the air expansion shaft 1 , and the end of the air expansion shaft 1 is provided with an annular hole 12 that cooperates with the shaft clamp 7 . The shaft clamp 7 can be arranged and fixed on the chuck body 2 .

The shaft clamp 7 is arc-shaped and fixed on the lower part of the inner wall of the assembly hole 6 .

The side of the air shaft 1 is provided with a lower half keyway 13 for installing the key 8, and the inner wall of the assembly hole 6 is correspondingly provided with an upper half keyway 16 for installing the key 8, and the lower half keyway 13 is connected with the upper half keyway. The half-key slots 16 are paired to form holes for mounting said key 8 .

The upper half keyway 16 is arranged on the upper part of the inner wall of the assembly hole 6 opposite to the installation position of the shaft clamp 7 .

The toggle lever 902 is preferably perpendicular to the lower pin 901 .

The end surface of the pin shaft 4 is provided with a threaded hole 14 for inserting and taking out the pin shaft 4 .

The chuck body 2 and the gland 3 are provided with a plurality of counterbore holes 15 for connecting other parts.

The working principle of the utility model: according to the technical requirements, put the shaft end of the air expansion shaft 1 into the position of the semicircular arc shaft card 7 corresponding to the chuck body 2; rotate the rotatable gland 3 onto the air expansion shaft 1, and The movable locking pin 9 makes the lower pin 901 extend into the locking hole 5, and then tightens the compression nut 903 on the movable locking pin so that the gland is tightly pressed on the air shaft 1; During the working process, due to the centrifugal force of the rotation and the uneven quality of the shaft itself, the compression nut 903 will loosen for a long time, and the movable locking pin 5 swings at a certain angle θ due to its own weight, as shown in Figure 5 In this way, it can be clearly observed and re-locked in time; through practice tests, after the movable locking pin 5 is opened to a certain angle, due to the friction force, the swing angle does not fluctuate much, and it is relatively stable and suitable prevention and observation.

The embodiments described in the utility model are only a description of the preferred implementation of the utility model, and are not intended to limit the concept and scope of the utility model. Various modifications and improvements made in the technical solution of the utility model shall fall within the scope of protection of the utility model.

Claims (10)

1. A novel connection structure between an air expansion shaft and a chuck body, characterized in that: a chuck body (2) is included, and a gland (4) is hinged on the chuck body (2) 3), through the rotation of the gland (3), the air expansion shaft (1) is pressed on the chuck body (2), and the chuck body (2) is also provided with a toggle lock Pin (9), a locking hole (5) is provided at the non-hinged end of the gland (3), and the movable locking pin (9) is inserted into the locking hole (5) to lock the The gland (3) is locked. 2. The novel connection structure between the air shaft and the chuck body according to claim 1, characterized in that: the movable locking pin (9) includes a lower pin inserted into the locking hole (5). The latch (901) and the toggle lever (902) for turning the lower latch (901) are set on the chuck body (2) and the gland (3) to limit the toggle lever (902). ) movement of the neutral slot (10), the toggle lever (902) is provided with a pressing mechanism that can compress the toggle lever (902) in the neutral slot (10) so that it cannot be arbitrarily toggled. Nut (903). 3. The novel connection structure between the air shaft and the chuck body according to claim 2, characterized in that: the neutral groove (10) is divided into a limiting section provided on the gland (3) As well as the toggle section provided on the chuck body (2), the limit section of the neutral groove (10) is provided with a step (11) for the compression nut (903) to compress. 4. According to any one of claims 1 to 3, the connection structure between the air expansion shaft and the chuck body is characterized in that: the fixedly connected chuck body (2) and the gland (3) are on the end surface An assembly hole (6) for pressing the air expansion shaft (1) is formed, and the assembly hole (6) is provided with a drive to drive the air expansion shaft (1) together with the chuck body (2). Turn key (8). 5. The novel connection structure between the air shaft and the chuck body according to claim 4, characterized in that: the assembly hole (6) is provided with a shaft clamp that limits the axial displacement of the air shaft (1) (7), the end of the air expansion shaft (1) is provided with an annular hole (12) matching with the shaft clamp (7). 6. The novel connection structure between the air expansion shaft and the chuck body according to claim 5, characterized in that: the shaft clamp (7) is arc-shaped and fixed at the lower part of the inner wall of the assembly hole (6). 7. The novel connection structure between the air shaft and the chuck body according to claim 6, characterized in that: the side of the air shaft (1) is provided with a lower half keyway (13) for installing the key (8) , the inner wall of the assembly hole (6) is correspondingly provided with an upper half keyway (16) for installing the key (8), and the lower half keyway (13) is paired with the upper half keyway (16) to form the keyway for installing the key (8) holes. 8. The novel connection structure between the air shaft and the chuck body according to claim 7, characterized in that: the upper half keyway (16) is set on the side opposite to the installation position of the shaft clamp (7). The upper part of the inner wall of the assembly hole (6). 9. The novel connection structure between the air shaft and the chuck body according to claim 2, characterized in that: the toggle lever (902) is perpendicular to the lower pin (901). 10. The new connection structure between the air shaft and the chuck body according to claim 1, characterized in that: the end surface of the pin shaft (4) is provided with threads for inserting and taking out the pin shaft (4) hole (14).