CN218841661U - Cap screwing device - Google Patents

Abstract

The utility model discloses a spiral cover device, include from last to the torque limiter who sets gradually down, drive mechanism, a cover mechanism grabs for connecting the lid, drive mechanism includes the uide bushing, first spring and sliding shaft, the connection can be dismantled to the upper end and the torque limiter of uide bushing, the upper end of sliding shaft is located the uide bushing and with uide bushing sliding connection, the lower extreme of sliding shaft can be dismantled with the cover mechanism of grabbing and be connected, the outside of uide bushing is provided with first spacing arch, the lower extreme of sliding shaft is provided with the spacing arch of second, first spring housing is on uide bushing and sliding shaft, the upper end and the first spacing protruding butt of first spring, the lower extreme and the spacing protruding butt of second of first spring. The utility model provides a spiral cover device, the disinfection is convenient.

Description

Cap screwing device

Technical Field

The utility model relates to a rotatory filling technical field especially relates to a spiral cover device.

Background

The cap screwing head is used for screwing cap in the field of rotary filling and can be combined with a rotary conveying path to complete the combination of the bottle cap and the bottle body in the conveying process. The cap screwing head in the prior art comprises a magnetic torque limiter, a cap grabbing head and a floating type transmission shaft, wherein the cap grabbing head is arranged below the magnetic torque limiter and used for grabbing a bottle cap, and the floating type transmission shaft is arranged above the magnetic torque limiter and used for providing driving force for the cap grabbing head through the magnetic torque limiter. The bottle cap can rotate and move downwards in the screwing process, so that the magnetic torque limiter of the existing cap screwing head can stretch out and draw back, and the magnetic torque limiter slowly stretches out to enable the cap grabbing head to move downwards along with the bottle cap in the bottle cap screwing process. The inside telescopic machanism that has integrateed of the magnetism torque force limiter of current spiral cover head promptly to lead to the structure complicated, and inside space is narrow and small, when using in the sterile environment in the filling field, the disinfection is very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the inconvenient shortcoming of current spiral cover head disinfection, provide a spiral cover device, disinfection is convenient.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a spiral cover device, include from last torsion limiter that sets gradually extremely down, drive mechanism, a cover mechanism grabs for connecting the lid, drive mechanism includes the uide bushing, first spring and sliding shaft, the connection can be dismantled to the upper end and the torsion limiter of uide bushing, the upper end of sliding shaft is located the uide bushing and with uide bushing sliding connection, the lower extreme of sliding shaft can be dismantled with grabbing the cover mechanism and connect, the outside of uide bushing is provided with first spacing arch, the lower extreme of sliding shaft is provided with the spacing arch of second, first spring housing is on uide bushing and sliding shaft, the upper end and the first spacing protruding butt of first spring, the lower extreme and the spacing protruding butt of second of first spring.

Through the arrangement, the torsion limiter is simple in structure and convenient to disinfect and sterilize. Specifically, the cap grabbing mechanism grabs the cap and moves the cap to the upper side of the bottle, the bottle is located on the conveying device, and the bottom of the bottle is connected with the limiting mechanism on the conveying device. The transmission shaft is connected to the upside of torque limiter, the transmission shaft refers to current floating transmission shaft, drive arrangement and elevating gear are connected to the upper end of transmission shaft, drive arrangement can set up to the motor, elevating gear can set up to the cylinder, drive arrangement and elevating gear are and adopt prior art, do not expand here, under elevating gear's effect, elevating gear can drive the transmission shaft, the torque limiter, drive mechanism and grab and cover mechanism and go up and down, under drive arrangement's effect, drive arrangement can drive the transmission shaft, the torque limiter, drive mechanism and grab and cover mechanism and rotate. When the cap is positioned above the bottle, the lifting device drives the torque limiter, the transmission mechanism, the cap grabbing mechanism and the cap to move downwards, the cap is pressed on the bottle, the first spring is shortened, the sliding shaft moves upwards along the guide sleeve, the sliding shaft can only slide along the axis direction of the sliding shaft relative to the guide sleeve, the sliding shaft cannot rotate around the axis of the sliding shaft relative to the guide sleeve, then the driving device operates and drives the torque limiter, the transmission mechanism, the cap grabbing mechanism and the cap to rotate, specifically, the torque limiter drives the cap to rotate through the guide sleeve, the sliding shaft and the cap grabbing mechanism, the cap is slowly tightened on the bottle, the cap rotates and moves downwards while rotating under the action of the first spring, the cap is always pressed on the bottle under the action of the first spring, the sliding shaft and the cap grabbing mechanism can move downwards along with the cap, the first spring slowly lengthens, after the cap is tightened, the resistance of the cap is increased, the torque limiter does not slip and continuously drives the transmission mechanism to rotate, the cap is prevented from being damaged, the torque limiter can be adopted by the existing torque limiter, the cap is tightened, the cap is driven to move upwards, the cap screwing mechanism and the cap is not acted on the cap screwing mechanism, and the cap screwing mechanism is not acted on the cap screwing mechanism. In this application, drive mechanism possesses flexible function, thereby make the torque limiter need not stretch out and draw back, the structure of torque limiter has been simplified, thereby make the torque limiter be convenient for disinfection and sterilization, when needs carry out disinfection and sterilization to the torque limiter, with torque limiter and drive mechanism disconnection, with torque limiter and transmission shaft disconnection, thereby dismantle the torque limiter, put into the dioxygen aquatic with the torque limiter and can disinfect, because torque limiter simple structure, hydrogen peroxide solution gets into the torque limiter easily and disinfects to the inside of torque limiter. In addition, the transmission mechanism is simple in structure, the transmission mechanism can be independently sterilized after the transmission mechanism and the cover grabbing mechanism are disconnected, the transmission mechanism only needs to be placed into hydrogen peroxide during sterilization, and the hydrogen peroxide can easily enter the transmission mechanism and sterilize the transmission mechanism.

Furthermore, a first long hole is formed in the guide sleeve, the extending direction of the first long hole is consistent with the extending direction of the guide sleeve, a first limiting pin penetrates through the sliding shaft, and at least part of the first limiting pin is arranged in the first long hole.

Through the setting, carry on spacingly to the sliding shaft, it is specific, first spacer pin can follow first slot hole and slide to realize the relative slip of sliding shaft and uide bushing, in addition, when the uide bushing rotated, the uide bushing rotated through first spacer pin drive sliding shaft, and then the drive is grabbed and is covered the mechanism and rotate.

Further, the torque limiter comprises an output shaft, wherein a plurality of first transmission keys are fixedly connected in the circumferential direction of the output shaft, the extending direction of the first transmission keys is consistent with the extending direction of the output shaft, a plurality of second transmission keys are fixedly connected in the inner circumference of the guide sleeve, a transmission groove is formed between the second transmission keys, the output shaft is inserted into the guide sleeve, and the first transmission keys are arranged in the transmission groove.

Through the aforesaid setting, realize the transmission between output shaft and the uide bushing, it is concrete, the output shaft sets up the downside at the torque limiter, drive arrangement is connected with the upside of torque limiter, when first transmission key sets up in the transmission groove, when drive arrangement drive torque limiter rotates, the first transmission key of output shaft drives the rotation of second transmission key, the output shaft drives the uide bushing and rotates promptly, when the lid is screwed up, the torque limiter skids, output shaft stall. In addition, the output shaft and the guide sleeve are connected in an inserting mode, namely the output shaft is inserted into the guide sleeve, so that the first transmission key enters the transmission groove, and the installation is convenient and fast.

Further, be provided with the spacing groove on the first drive key, circumference along the uide bushing is provided with the accommodation hole, the upper pot head of uide bushing is provided with the quick detach cover, quick detach cover and uide bushing sliding connection, the inboard of quick detach cover is provided with dodges the groove, be provided with the pearl in the accommodation hole, the inner wall butt of pearl and quick detach cover, and the pearl is at least partly to be set up at the spacing inslot, the outside fixedly connected with third spacing arch of quick detach cover, the upper pot head of uide bushing is provided with the second spring, the upper end and the spacing protruding butt of third of second spring, the lower extreme and the first spacing protruding butt of second spring.

Through the arrangement, the detachable connection of the torque limiter and the guide sleeve is very convenient. When output shaft and uide bushing are connected, dodge the upside that the groove set up at the pearl, under the effect of quick detach cover, the pearl imbeds at the spacing inslot, under the effect of pearl, relative motion can not be followed between uide bushing and the output shaft, promptly the output shaft can not be extracted from the uide bushing, the second spring is the state of compressed this moment, when the output shaft needs to be extracted from the uide bushing, press down the quick detach cover, the second spring compression, when dodging groove downstream to the pearl and keeping away from one side of spacing groove, pull out the uide bushing downwards, the pearl can move and at least partial entering dodge the groove to dodging the groove this moment, pearl and spacing groove throw off, the output shaft extracts from the uide bushing, release the quick detach cover, under the effect of second spring, quick detach cover upward movement, the second spring extension. When output shaft and uide bushing are connected to needs, press the quick detach cover downwards, the second spring shortens, dodges groove rerunning to pearl department, then inserts the output shaft, and the spacing groove on the output shaft moves to the pearl and keeps away from the one side of dodging the groove, and after releasing the quick detach cover, under the effect of second spring, quick detach cover upward movement dodges groove upward movement, under the effect of the inner wall of quick detach cover, one side embedding spacing groove of pearl.

Furthermore, the cover grabbing mechanism comprises a connecting sleeve, the upper end of the connecting sleeve is in threaded connection with the sliding shaft, and an embedded groove used for embedding the cover is formed in the lower end of the connecting sleeve.

Through the above arrangement, the connection can be dismantled to sliding shaft and adapter sleeve, the lid gets into to realize the connection of lid and adapter sleeve in the embedded groove, the outside of current lid is provided with the line along vertical extension, under the effect of line, can not rotate relatively between lid and the adapter sleeve, thereby when the adapter sleeve drives the lid and rotates, the lid can be screwed on the bottle, when the spiral cover is accomplished the back, elevating gear drives the adapter sleeve upward movement, under stop gear's effect, lid and bottle are fixed basically on conveyor, so when the adapter sleeve upward movement, the lid comes out from the embedded groove (because the line in the outside of lid is along vertical, refer to current cola bottle lid, the relative motion of lid relatively producing along the axis direction of adapter sleeve more easily, when the adapter sleeve upward movement, the lid is pulled by the bottle, adapter sleeve upward movement and the lid separates).

Furthermore, a sliding groove is formed in the connecting sleeve, the sliding groove is formed in the upper side of the embedded groove and communicated with the embedded groove, an extrusion block is connected in the sliding groove in a sliding mode, a channel penetrating through the extrusion block is formed in the extrusion block, the connecting sleeve is provided with a second long hole, the extrusion block penetrates through a second limiting pin, and at least part of the second limiting pin is arranged in the second long hole.

Through the arrangement, the cover is assisted to be detached from the cover grabbing mechanism. Specifically, the relative both sides of this application are provided with the baffle, the baffle sets up the upside at the spacing arch of second, at the in-process of spiral cover, the baffle can not move from top to bottom, the height of baffle is certain promptly, promptly the baffle can not follow and grab and cover the mechanism up-and-down motion, the lid is located the embedded groove, the upside butt of extrusion piece and lid, the lid is screwed up the back, when the lid need break away from and grab and cover the mechanism, elevating gear drive adapter sleeve upward movement, thereby make the lid leave from the embedded groove, the stop gear upside is provided with the recess, the bottle is on conveyor, the bottom of bottle is embedded in the recess, utilize the frictional force between recess and the bottle to realize spacing of bottle, when the frictional force between recess and the bottle is relatively small, during adapter sleeve upward movement, will drive the second spacer pin, the extrusion piece, bottle and lid upward movement together, thereby make and uncap the failure, the second spacer pin upwards is close to the baffle and with the butt, along with elevating gear continues to drive adapter sleeve upward movement, the relative adapter sleeve downward movement makes the extrusion piece follow the embedded groove with the lid follow-in the extrusion piece extrusion inslot, thereby it fails to have prevented uncap failure.

Drawings

FIG. 1 is a schematic diagram of an embodiment.

Fig. 2 is a schematic view of a torque limiter.

Fig. 3 is a schematic view of the transmission mechanism.

Fig. 4 is a top view of the transmission mechanism.

Fig. 5 is a side view of the cap grasping mechanism.

Fig. 6 is a sectional view of the embodiment.

Fig. 7 is an enlarged view of fig. 6 at a.

Fig. 8 is a schematic view of the cover in the insertion groove.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Referring to fig. 1 to 8, a cap screwing device includes a torsion limiter 11, a transmission mechanism 12 and a cap grabbing mechanism 13 for connecting a cap 21, the transmission mechanism 12 includes a guide sleeve 121, a first spring 122 and a sliding shaft 123, the upper end of the guide sleeve 121 is detachably connected with the torsion limiter 11, the upper end of the sliding shaft 123 is located in the guide sleeve 121 and is slidably connected with the guide sleeve 121, the lower end of the sliding shaft 123 is detachably connected with the cap grabbing mechanism 13, a first limit projection 1211 is arranged on the outer side of the guide sleeve 121, a second limit projection 1231 is arranged on the lower end of the sliding shaft 123, the first spring 122 is sleeved on the guide sleeve 121 and the sliding shaft 123, the upper end of the first spring 122 is abutted to the first limit projection 1211, and the lower end of the first spring 122 is abutted to the second limit projection 1231.

Through the arrangement, the torque limiter 11 is simple in structure and convenient to disinfect and sterilize. Specifically, the cap-grasping mechanism 13 grasps the cap 21 and moves it to the upper side of the bottle (not shown in the figure) on the conveyor, and the bottom of the bottle is connected to the stopper mechanism on the conveyor. The upside of torque limiter 11 is connected with the transmission shaft (not shown in the figure), the transmission shaft refers to the current floating transmission shaft, the upper end of the transmission shaft is connected with the driving device (not shown in the figure) and the lifting device (not shown in the figure), the driving device can be set as a motor, the lifting device can be set as a cylinder, the driving device and the lifting device both adopt the prior art, the expansion is not performed here, under the action of the lifting device, the lifting device can drive the transmission shaft, the torque limiter 11, the transmission mechanism 12 and the cover grabbing mechanism 13 to lift, and under the action of the driving device, the driving device can drive the transmission shaft, the torque limiter 11, the transmission mechanism 12 and the cover grabbing mechanism 13 to rotate. When the cap 21 is positioned above the bottle, the lifting device drives the torque limiter 11, the transmission mechanism 12, the cap grabbing mechanism 13 and the cap 21 to move downwards, the cap 21 is pressed on the bottle, the first spring 122 shortens, the sliding shaft 123 moves upwards along the guide sleeve 121, the sliding shaft 123 can only slide along the axial direction of the sliding shaft 123 relative to the guide sleeve 121, the sliding shaft 123 cannot rotate around the axial line of the sliding shaft 123 relative to the guide sleeve 121, then the driving device operates and drives the torque limiter 11, the transmission mechanism 12, the cap grabbing mechanism 13 and the cap 21 to rotate, specifically, the torque limiter 11 drives the cap 21 to rotate through the guide sleeve 121, the sliding shaft 123 and the cap grabbing mechanism 13, the cap 21 is slowly screwed on, during the process, the cap 21 moves downwards while rotating, under the action of the first spring 122, the cap 21 is always pressed on the bottle, so that the sliding shaft 123 and the cap grabbing mechanism 13 can move downwards along with the cap 21, the first spring 122, after the cap 21 is screwed on, the resistance of the cap 21 is not longer, the transmission mechanism 11 does not drive torque limiter 11 and the cap 21 can not stop moving upwards, and the cap screwing mechanism can be screwed on the cap 21, thus the existing cap 21 can be continuously screwed on, and the cap screwing mechanism can be prevented from being screwed off, the cap 21, and the cap 21 can be prevented from being screwed on. In this application, drive mechanism 12 possesses flexible function, thereby make torque limiter 11 need not stretch out and draw back, the structure of torque limiter 11 has been simplified, thereby make torque limiter 11 be convenient for disinfection and sterilization, when needs carry out disinfection and sterilization to torque limiter 11, break off torque limiter 11 and drive mechanism 12, break off torque limiter 11 and transmission shaft, thereby dismantle torque limiter 11, but put into the dioxygen aquatic with torque limiter 11 and disinfect, because torque limiter 11 simple structure, hydrogen peroxide solution easily gets into torque limiter 11 and disinfects and sterilize to the inside of torque limiter 11. In addition, the structure of the transmission mechanism 12 is simple, after the transmission mechanism 12 and the cover grabbing mechanism 13 are disconnected, the transmission mechanism 12 can be disinfected and sterilized independently, the transmission mechanism 12 only needs to be placed into hydrogen peroxide during disinfection and sterilization, and hydrogen peroxide can easily enter the transmission mechanism 12 and disinfect the transmission mechanism 12.

As an implementation manner, the guide sleeve 121 is provided with a first long hole 1212, an extending direction of the first long hole 1212 is the same as an extending direction of the guide sleeve 121, the sliding shaft 123 passes through a first limit pin, and the first limit pin is at least partially disposed in the first long hole 1212.

Through the above arrangement, the sliding shaft 123 is limited, specifically, the first limit pin can slide along the first long hole 1212, so that the sliding shaft 123 and the guide sleeve 121 can slide relatively, and in addition, when the guide sleeve 121 rotates, the guide sleeve 121 drives the sliding shaft 123 to rotate through the first limit pin, so as to drive the cover grabbing mechanism 13 to rotate.

As one implementation manner, the torque limiter 11 includes an output shaft 111, a plurality of first driving keys 112 are fixedly connected along a circumferential direction of the output shaft 111, an extending direction of the first driving keys 112 is identical to an extending direction of the output shaft 111, a plurality of second driving keys 1213 are fixedly connected along an inner circumference of the guide sleeve 121, a driving groove 1214 is formed between the second driving keys 1213, the output shaft 111 is inserted into the guide sleeve 121, and the first driving keys 112 are disposed in the driving groove 1214.

Through the above arrangement, transmission between the output shaft 111 and the guide sleeve 121 is realized, specifically, the output shaft 111 is arranged at the lower side of the torque limiter 11, the driving device is connected with the upper side of the torque limiter 11, when the first transmission key 112 is arranged in the transmission groove 1214, when the driving device drives the torque limiter 11 to rotate, the first transmission key 112 of the output shaft 111 drives the second transmission key 1213 to rotate, that is, the output shaft 111 drives the guide sleeve 121 to rotate, and when the cover 21 is tightened, the torque limiter 11 slips and the output shaft 111 stops rotating. In addition, the output shaft 111 is inserted into the guide sleeve 121, that is, the output shaft 111 is inserted into the guide sleeve 121, so that the first transmission key 112 enters the transmission groove 1214, and the installation is convenient.

As an implementation manner, a limit groove 1121 is arranged on the first transmission key 112, an accommodating hole 1215 is arranged along the circumferential direction of the guide sleeve 121, a quick release sleeve 124 is sleeved on the upper end of the guide sleeve 121, the quick release sleeve 124 is slidably connected with the guide sleeve 121, an avoiding groove 1241 is arranged on the inner side of the quick release sleeve 124, a bead 1216 is arranged in the accommodating hole 1215, the bead 1216 abuts against the inner wall of the quick release sleeve 124, at least part of the bead 1216 is arranged in the limit groove 1121, a third limit protrusion 1242 is fixedly connected to the outer side of the quick release sleeve 124, a second spring 1217 is arranged on the upper end of the guide sleeve 121, the upper end of the second spring 1217 abuts against the third limit protrusion 1242, and the lower end of the second spring 1217 abuts against the first limit protrusion 1211.

Through the above arrangement, the detachable connection of the torque limiter 11 and the guide sleeve 121 is very convenient. Referring to fig. 7, when the output shaft 111 and the guide sleeve 121 are connected, the escape slot 1241 is disposed on the upper side of the bead 1216, the bead 1216 is embedded in the stopper slot 1121 by the quick release sleeve 124, the guide sleeve 121 and the output shaft 111 cannot move relatively under the action of the bead 1216, that is, the output shaft 111 cannot be pulled out of the guide sleeve 121, at this time, the second spring 1217 is in a compressed state, when the output shaft 111 needs to be pulled out of the guide sleeve 121, the quick release sleeve 124 is pressed downward, the second spring 1217 is compressed, when the escape slot 1241 moves downward to the side of the bead 1216 away from the stopper slot 1121, the guide sleeve 121 is pulled downward, at this time, the bead 1216 can move toward the escape slot 1241 and at least partially enter the escape slot 1241, the bead 1216 and the stopper slot are disengaged, the output shaft 111 is pulled out of the guide sleeve 121, the quick release sleeve 124 is released, and the second spring 1217 moves upward, and the second spring 1217 extends. When the output shaft 111 and the guide sleeve 121 need to be connected, the quick release sleeve 124 is pressed downwards, the second spring 1217 is shortened, the avoidance groove 1241 moves to the position of the bead 1216 again, then the output shaft 111 is inserted, the limit groove 1121 on the output shaft 111 moves to the side of the bead 1216 away from the avoidance groove 1241, after the quick release sleeve 124 is released, the quick release sleeve 124 moves upwards under the action of the second spring 1217, the avoidance groove 1241 moves upwards, and one side of the bead 1216 is embedded into the limit groove 1121 under the action of the inner wall of the quick release sleeve 124.

As one implementation, the cover grasping mechanism 13 includes a connection sleeve 131, an upper end of the connection sleeve 131 is screw-coupled with the sliding shaft 123, and a lower end of the connection sleeve 131 is provided with an insertion groove 1311 for inserting the cover 21.

With the above arrangement, the sliding shaft 123 is detachably connected with the connecting sleeve 131, the cover 21 enters the embedded groove 1311 to connect the cover 21 and the connecting sleeve 131, referring to fig. 8, the outer side of the existing cover 21 is provided with a vertically extending line, under the action of which the cover 21 and the connecting sleeve 131 cannot rotate relatively, so that when the connecting sleeve 131 drives the cover 21 to rotate, the cover 21 can be screwed on the bottle, when the cover is screwed on, the lifting device drives the connecting sleeve 131 to move upwards, and the cover 21 and the bottle are basically fixed on the conveying device under the action of the limiting mechanism, so when the connecting sleeve 131 moves upwards, the cover 21 comes out of the embedded groove 1311 (because the line of the outer side of the cover 21 is vertical, referring to the existing bottle cap cola, the cover 21 is relatively easy to move relatively to move along the axis direction of the connecting sleeve 131, that when the connecting sleeve 131 moves upwards, the cover 21 is pulled by the bottle, and the connecting sleeve 131 moves upwards to separate from the cover 21).

As an implementation manner, a sliding groove 1312 is arranged in the connecting sleeve 131, the sliding groove 1312 is arranged on the upper side of the insertion groove 1311 and is communicated with the insertion groove 1311, an extrusion block 1313 is slidably connected in the sliding groove 1312, a channel 1314 penetrating through the extrusion block 1313 is arranged on the extrusion block 1313, the connecting sleeve 131 is provided with a second long hole 1315, a second limit pin 1316 penetrates through the extrusion block 1313, and at least part of the second limit pin 1316 is arranged in the second long hole 1315.

With the above arrangement, the cap 21 is assisted to be detached from the cap grasping mechanism 13. Specifically, the baffles 22 are arranged on the two opposite sides of the present application, the baffles are arranged on the upper sides of the second limiting protrusions 1231, in the capping process, the baffles do not move up and down, that is, the height of the baffles is constant, that is, the baffles do not move up and down along with the cap grabbing mechanism 13, the cap 21 is located in the embedded groove 1311, the pressing block 1313 abuts against the upper side of the cap 21, referring to fig. 8, after the cap 21 is screwed down, when the cap 21 needs to be separated from the cap grabbing mechanism 13, the lifting device drives the connecting sleeve 131 to move up, so that the cap 21 is separated from the embedded groove 1311, the upper side of the limiting mechanism is provided with a groove, when the bottle is on the conveying device, the bottom of the bottle is embedded in the groove, the bottle is limited by the friction force between the groove and the bottle, when the friction force between the groove and the bottle is small, the connecting sleeve 131 moves up, the second limiting pin 1316, the pressing block 1313, the bottle and the cap 21 are driven to move up, so that the cap is removed and the second limiting pin 1316 is close to abut against the baffles and press the connecting sleeve 131 downwards, and the cap 1316 is prevented from failing.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims (6)

1. The utility model provides a spiral cover device, its characterized in that includes from last torque limiter, drive mechanism that set gradually extremely down, be used for connecting grabbing of lid and cover the mechanism, drive mechanism includes uide bushing, first spring and sliding shaft, the upper end of uide bushing with the connection can be dismantled to the torque limiter, the upper end of sliding shaft is located in the uide bushing and with uide bushing sliding connection, the lower extreme of sliding shaft with grab and cover the mechanism and can dismantle the connection, the outside of uide bushing is provided with first spacing arch, the lower extreme of sliding shaft is provided with the spacing arch of second, first spring housing be in the uide bushing with on the sliding shaft, the upper end of first spring with first spacing protruding butt, the lower extreme of first spring with the spacing protruding butt of second.

2. The cap screwing device as claimed in claim 1, wherein the guide sleeve is provided with a first long hole, the extending direction of the first long hole is consistent with the extending direction of the guide sleeve, the sliding shaft is penetrated by a first limit pin, and the first limit pin is at least partially arranged in the first long hole.

3. The cap screwing device according to claim 1, wherein the torque limiter comprises an output shaft, a plurality of first transmission keys are fixedly connected along the circumferential direction of the output shaft, the extending direction of the first transmission keys is consistent with the extending direction of the output shaft, a plurality of second transmission keys are fixedly connected along the inner circumference of the guide sleeve, transmission grooves are formed between the second transmission keys, the output shaft is inserted into the guide sleeve, and the first transmission keys are arranged in the transmission grooves.

4. The cap screwing device of claim 3, wherein a limiting groove is arranged on the first transmission key, a containing hole is arranged along the circumferential direction of the guide sleeve, a quick release sleeve is arranged on an upper end sleeve of the guide sleeve, the quick release sleeve is slidably connected with the guide sleeve, an avoiding groove is arranged on the inner side of the quick release sleeve, beads are arranged in the containing hole and abutted against the inner wall of the quick release sleeve, at least part of the beads are arranged in the limiting groove, a third limiting protrusion is fixedly connected to the outer side of the quick release sleeve, a second spring is arranged on the upper end sleeve of the guide sleeve, the upper end of the second spring is abutted against the third limiting protrusion, and the lower end of the second spring is abutted against the first limiting protrusion.

5. The cap screwing device of claim 1, wherein the cap grabbing mechanism comprises a connecting sleeve, the upper end of the connecting sleeve is in threaded connection with the sliding shaft, and the lower end of the connecting sleeve is provided with an embedded groove for embedding a cap.

6. The cap screwing device of claim 5, wherein a sliding groove is arranged in the connecting sleeve, the sliding groove is arranged on the upper side of the embedded groove and is communicated with the embedded groove, an extrusion block is connected in the sliding groove in a sliding mode, a channel penetrating through the extrusion block is arranged on the extrusion block, the connecting sleeve is provided with a second long hole, a second limiting pin penetrates through the extrusion block, and at least part of the second limiting pin is arranged in the second long hole.

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