CN113307202A

CN113307202A - Rotary cap screwing machine

Info

Publication number: CN113307202A
Application number: CN202110548595.4A
Authority: CN
Inventors: 李诗龙; 朱提波; 李彬; 胡志刚
Original assignee: Wuhan Polytechnic University
Current assignee: Wuhan Polytechnic University
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-08-27
Anticipated expiration: 2041-05-19
Also published as: CN113307202B

Abstract

The invention discloses a rotary cap screwing machine which comprises a base, a bottle supporting device and a cap screwing device, wherein the bottle supporting device is arranged on the base, a fixed station for relatively fixing a bottle body is arranged on the bottle supporting device, the cap screwing device is arranged on the base and corresponds to the bottle supporting device, the cap screwing device is provided with a cap screwing part positioned above the fixed station, and the cap screwing part is provided with a cap screwing stroke for horizontally rotating and vertically moving, wherein the cap screwing part is used for cap screwing operation on the bottle body positioned on the fixed station, and the mounting position of the cap screwing part on the base is adjustable in the vertical direction and/or the horizontal direction, so that the relative position of the cap screwing part and the fixed station in the vertical direction and/or the relative position of the cap screwing part in the horizontal direction can be adjusted. The rotary cap screwing machine provided by the invention can be adapted to bottle bodies with different sizes, so as to solve the problems of poor adaptability, low operation speed, poor stability and reliability and low cap screwing quality of the existing cap screwing machine.

Description

Rotary cap screwing machine

Technical Field

The invention relates to the technical field of packaging engineering, in particular to a rotary cap screwing machine.

Background

The thread sealing of the present packaging container is mainly used for product packaging in the industrial fields of food, beverage, daily chemicals, pharmacy and the like, the packaging sealing mode has the characteristics of good sealing safety, convenient opening, good sealing again after opening and the like, the existing cap screwing machine has the problems of low adaptability, low operation speed, poor stability and reliability, low cap screwing quality and influences the overall production efficiency and production quality of a packaging production line, therefore, in order to meet the requirements of high-speed, high-efficiency and high-reliability production of modern packaging machines, the transmission system of the cap screwing machine is further improved, and the thread sealing of the packaging container, especially the high-speed cap screwing sealing adaptability and reliability of a deep-hole thread cap are very important.

Disclosure of Invention

The invention mainly aims to provide a rotary cap screwing machine, and aims to solve the problems of low adaptability, low operation speed, poor stability and reliability and low cap screwing quality of the conventional cap screwing machine.

In order to achieve the above object, the present invention provides a rotary cap screwing machine, comprising:

a machine base;

the bottle supporting device is arranged on the base and is provided with a fixing station for fixing the bottle body relatively; and the number of the first and second groups,

the spiral cover device, install in the frame just corresponds it sets up to hold in the palm bottled putting, the spiral cover device has and is located the spiral cover portion of fixed station top, spiral cover portion has the level and rotates and the spiral cover stroke that reciprocates in the spiral cover stroke, the spiral cover portion is to placing in bottle on the fixed station carries out the spiral cover operation, the spiral cover portion is in mounted position on the frame is from top to bottom and/or the level is to adjustable setting, so that the spiral cover portion with fixed station is at the adjustable setting of relative position of up-down relative position and/or level to relative position.

Optionally, the bottle supporting device comprises a rotating disc, and a plurality of fixed stations distributed along the circumferential direction of the rotating disc are arranged on the rotating disc;

the cover screwing device is arranged on the base in a vertically adjustable mode through a lifting rod penetrating through the center of the rotating disc, so that the mounting position of the cover screwing device on the base can be arranged in an up-and-down adjustable mode.

Optionally, the base is rotatably provided with a worm wheel, an internal thread is arranged in the worm wheel, an external thread is arranged on the lower portion of the lifting rod, and the internal thread is matched with the external thread to drive the lifting rod to be vertically adjusted on the base, so that the mounting position of the rotary cover portion on the base can be vertically adjusted.

Optionally, a plurality of guide rods are arranged on the rotating disc, and the plurality of guide rods are arranged corresponding to the plurality of fixing stations;

the lifting rod is provided with a driving convex column, the top of the driving convex column is provided with an annular driving surface extending along the circumferential direction of the lifting rod, and the annular driving surface is arranged in a gradually convex manner along a rotating direction;

the spiral cover device corresponds a plurality of fixed station settings, spiral cover portion includes:

the first support arm extends horizontally, the middle part of the first support arm can be movably arranged on the guide rod up and down, one end of the first support arm extends to the upper end of the driving convex column to be abutted against the annular driving surface, and the other end of the first support arm extends towards the outer side of the driving convex column; and the number of the first and second groups,

the cap screwing head is rotatably arranged at one end, far away from the lifting rod, of the first supporting arm;

one section of the first supporting arm connected with the screwing head comprises a first telescopic part which can be telescopic along the horizontal direction, so that the screwing head can be adjusted along the horizontal direction.

Optionally, an auxiliary arm is arranged on the first supporting arm, the auxiliary arm extends along the adjacent guide rod, a bearing bush is fixedly connected to the extending end of the auxiliary arm, and the bearing bush is rotatably and slidably clamped in the adjacent guide rod up and down.

Optionally, the capping device comprises:

the sun gear is fixedly arranged on the lifting rod; and the number of the first and second groups,

a planetary gear rotatably installed at the guide bar and engaged with the sun gear to revolve around the sun gear and rotate; and the number of the first and second groups,

and the transmission mechanism is used for connecting the planetary gear with the cap screwing head in a transmission manner, so that the planetary gear drives the cap screwing head to rotate.

Optionally, the transmission mechanism comprises:

the rotating shaft is rotatably arranged at one end, far away from the lifting rod, of the first supporting arm and is arranged in the vertical direction, and the cap screwing head is fixedly arranged at the lower end of the rotating shaft;

the first belt wheel is fixedly arranged at the upper end of the rotating shaft;

the second belt wheel is movably arranged on the guide rod up and down and can be rotatably arranged on the guide rod, the second belt wheel is axially fixed with the first support arm and can be relatively rotatably connected with the first support arm, the diameter of the second belt wheel is larger than that of the first belt wheel, and the first belt wheel and the second belt wheel are in transmission connection through a belt; and the number of the first and second groups,

the guide shafts are arranged in a plurality of numbers, the guide shafts can penetrate through the planetary gear in a vertically movable mode, and the guide shafts are fixedly connected to the second belt wheel, so that the planetary gear drives the second belt wheel to rotate.

Optionally, the bottle holding device further comprises:

the poking wheel is arranged above the rotating disc and fixedly connected with the rotating disc, a plurality of notches are formed in the edge of the poking wheel, and a plurality of fixed stations are formed by the notches;

the disc cam is arranged between the driving convex column and the thumb wheel and is fixedly arranged on the lifting rod;

a plurality of second support arms are arranged corresponding to the fixed stations, extend along the radial direction relative to the lifting rod and are correspondingly arranged on the guide rods;

the holders are arranged corresponding to the fixing stations, can be horizontally and movably arranged at one ends of the second support arms far away from the disc-shaped cam correspondingly, and are used for holding and fixing the bottles, and can be expanded to different degrees to adapt to the bottles with different diameters; and the number of the first and second groups,

the transmission device is arranged on the second support arm;

the transmission device is in transmission connection with the disc cam and the gripper, so that the disc cam drives the gripper to open and close.

Optionally, the gripper is a manipulator, the transmission device is a travel switch, the travel switch is provided with a plurality of grippers, one end of the travel switch, which is far away from the disc cam, is connected with the manipulator, and one end of the travel switch, which is close to the disc cam, is abutted against the side surface of the disc cam, so that the travel switch is triggered to work through the protrusion on the side surface of the disc cam, and the manipulator is controlled to be opened and closed.

Optionally, the rotary capping machine further comprises:

the bottle feeding structure is matched and connected with the bottle feeding end of the bottle supporting device so as to continuously feed the bottle bodies into the bottle supporting device; and the number of the first and second groups,

and the bottle outlet structure is matched and connected with the bottle outlet end of the bottle supporting device so as to continuously send the bottle bodies out of the bottle supporting device.

According to the technical scheme, the mounting position of the rotary cover part on the base is arranged in an adjustable mode in the vertical direction and/or the horizontal direction, so that the relative position of the rotary cover part and the fixed station in the vertical direction and/or the relative position in the horizontal direction can be adjusted, the rotary type cap screwing machine can be adaptive to bottles with different sizes, meanwhile, the diameter of the second belt wheel is larger than that of the first belt wheel, the large belt wheel drives the small belt wheel to rotate, the rotating speed can be improved, high-speed cap screwing operation is achieved, the first support arm is abutted to the annular driving surface through gravity, automatic correction can be achieved when a bottle cap is deviated, and the problems that the existing cap screwing machine is poor in adaptability, low in operation speed, poor in stability and reliability and low in cap screwing quality are solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic top view of a rotary capping machine according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a front view of the embodiment of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken at A-A in FIG. 2;

FIG. 4 is a schematic cross-sectional view taken at B-B of FIG. 2;

FIG. 5 is a schematic cross-sectional view taken at C-C of FIG. 2;

FIG. 6 is a schematic cross-sectional view taken at M-M in FIG. 5.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In view of the above, the present invention provides a rotary cap screwing machine, which is adaptable to bottles of different sizes to realize high-speed cap screwing operation, and the first support arm abuts against the annular driving surface by gravity, so that the automatic correction can be performed when the bottle cap is deviated, thereby solving the problems of poor adaptability, low operation speed, poor stability and reliability, and low cap screwing quality of the existing cap screwing machine. Fig. 1 to 6 show an embodiment of the present invention.

In the present embodiment, as shown in fig. 2, the rotary cap screwing machine 100 comprises a machine base 1, a bottle supporting device 2 and a cap screwing device 3, the bottle supporting device 2 is arranged on the base 1, a fixing station 4 for fixing the bottle body relatively is arranged on the bottle supporting device 2, the cap screwing device 3 is arranged on the base 1 and corresponds to the bottle supporting device 2, the cap screwing device 3 is provided with a cap screwing part 5 positioned above the fixed station 4, the cap screwing part 5 is provided with a cap screwing stroke of horizontal rotation and up-and-down movement, in the cap screwing stroke, the cap screwing part 5 performs cap screwing operation on the bottle body arranged on the fixed station 4, the mounting position of the rotary cover part 5 on the machine base 1 can be adjusted in the vertical direction and/or the horizontal direction, so that the relative position of the rotary cover part 5 and the fixed station 4 in the vertical direction and/or the horizontal direction can be adjusted.

In the technical scheme of the invention, in order to accurately screw the cap, the bottle body is fixed by the fixing station 4 on the bottle supporting device 2, the cap screwing part 5 on the cap screwing device 3 is arranged corresponding to the fixing station 4, the cap screwing operation is completed by the horizontal rotation of the cap screwing part 5 and the cap screwing stroke of the up-and-down movement, and the relative position of the cap screwing part 5 and the fixing station 4 in the up-and-down direction and/or the relative position in the horizontal direction are adjustable, so that the rotary cap screwing machine 100 can be adapted to bottle bodies with different sizes, and the adaptability of the cap screwing machine is greatly improved.

In the present embodiment, as shown in fig. 2 and 4, the bottle holding device 2 includes a rotating disc 21, and a plurality of fixing stations 4 are disposed on the rotating disc 21 and distributed along the circumferential direction of the rotating disc; the cover screwing device 3 is vertically adjustably mounted on the base 1 by a lifting rod 6 passing through the center of the rotating disc 21, so that the mounting position of the cover screwing device 5 on the base 1 can be vertically adjusted.

The rotary disc 21 is rotatably installed on the base 1 through a first bearing 211, the rotary disc 21 is fixedly sleeved on the outer ring of the first bearing 211, a first gear 212 is fixedly sleeved on the outer ring of the first bearing 211, a first driving device 213 is further arranged on the base, a second gear 214 is installed on the first driving device 213, the second gear 214 is meshed with the first gear 212 to drive the rotary disc 21 to rotate, the rotary disc 21 is used for bearing a bottle body, the bottle body and the rotary disc 21 are relatively fixed at a fixing station 4, so that the bottle body follows the rotary disc 21 to revolve around the lifting rod 6, the lifting rod 6 is limited to rotate around the lifting rod 6 between the lifting rod 6 and the base 1 through an axial guide key 61, the lifting rod 6 can be lifted and adjusted on the base 1, and the rotary cover device 3 is driven to lift and adjust at the same time, so that the cap screwing device 3 can perform cap screwing operation on bottle bodies with different heights.

In this embodiment, as shown in fig. 2 and fig. 4, a second bearing 215 is further fixedly sleeved on an outer ring of the first bearing 211, the second bearing 215 is fixedly installed on the housing 1, and the second bearing 215 is a thrust bearing for axially supporting the first bearing 211.

In this embodiment, as shown in fig. 2, a worm wheel 62 is rotatably disposed on the base 1, an internal thread is disposed in the worm wheel, an external thread is disposed on the lower portion of the lifting rod 6, and the internal thread and the external thread are matched to drive the lifting rod 6 to adjust the base 1 in the vertical direction, so that the installation position of the cover rotating part 5 on the base 1 can be adjusted in the vertical direction.

The worm wheel 62 is connected with a second driving device in a transmission mode, the second driving device is fixedly installed on the base 1, the second driving device drives the worm wheel 62 to rotate, the worm wheel 62 cannot move up and down relative to the base 1, the outer thread and the inner thread function enable the lifting rod 6 to move up and down relative to the worm wheel 62, and therefore the cover screwing device 3 is driven to adjust up and down to achieve the cover screwing operation of bottles with different heights.

In this embodiment, as shown in fig. 2, a plurality of guide rods 22 are disposed on the rotating disc 21, so that the lifting rod 6 drives the cap screwing device 3 to lift synchronously, the guide rods 22 are movably connected with the rotating disc 21, the plurality of guide rods 22 are disposed corresponding to the plurality of fixing stations 4, and the rotating disc 21 rotates to drive the plurality of guide rods 22 to rotate synchronously.

The lifting rod 6 is provided with a driving convex column 31, an annular driving surface 311 extending along the circumferential direction of the lifting rod 6 is formed at the top of the driving convex column 31, and the annular driving surface 311 is arranged in a gradually convex mode along a rotating direction.

The cap screwing device 3 is arranged corresponding to the plurality of fixed stations 4, the cap screwing part 5 comprises a first support arm 32 and a cap screwing head 33, the first support arm 32 extends horizontally, the middle part of the first support arm 32 is movably mounted on the guide rod 22 up and down, one end of the first support arm 32 extends to the upper end of the driving convex column 31 to be abutted against the annular driving surface 311, and the other end of the first support arm extends towards the outer side of the driving convex column 31; the cap screwing head 33 is rotatably arranged at one end of the first supporting arm 32 far away from the lifting rod 6 and is used for completing cap screwing work; in order to adapt to bottle caps with different sizes, materials, strengths and capping requirements, a device for adjusting the torque force and the clamping force of the capping is further arranged in the capping head 33.

First arm 32 connects one section of spiral cover head 33 includes the first flexible portion that can follow the horizontal direction is flexible, so that spiral cover head 33 can be followed the horizontal direction and adjusted, when the bottle diameter is less, through first flexible portion will spiral cover head 33 is to being close to the direction of lifter 6 is adjusted, when the bottle diameter is great, through first flexible portion will spiral cover head 33 is to keeping away from lifter 6's direction is adjusted, thereby realizes adjusting spiral cover head 33 is relative fixed station 4 is in the position of horizontal direction.

The rotating disc 21 drives the plurality of guide rods 22 to rotate, the guide rods 22 drive the first support arm 32 to revolve around the lifting rod 6, the first support arm 32 is abutted to the annular driving surface 311, the annular driving surface 311 is fixed relative to the lifting rod 6, and due to the action of gravity, the first support arm 32 is abutted to the annular driving surface 331, so that the first support arm 32 moves up and down on the guide rods 22 and drives the cap screwing head 5 to move up and down to complete the up-and-down cap screwing stroke.

The first arm 32 and the annular driving surface 311 can be in rolling abutting connection through a first roller 321, or in sliding abutting connection, when the bottle cap is deviated or inclined, the cap screwing head 33 tends to bounce under the impact force of the bottle body, because the first arm 32 and the annular driving surface 311 are only in abutting connection, the impact force pushes the first arm 32 upwards for a certain distance, and the bottle cap is covered from the bottle body through the cap screwing head 5, and after the first arm 311 is reset, the cap screwing head 5 rotates to screw the bottle cap on the bottle mouth again, so that the problem that the cap cannot complete the cap screwing stroke due to deviation or inclined of the bottle cap in the cap screwing stroke is avoided, and the stable reliability of the cap screwing operation is greatly improved.

In this embodiment, as shown in fig. 5, in order to prevent the first arm 32 from twisting around the guide rod 22 during the cap screwing stroke, a sub-arm 322 is provided on the first arm 32, the sub-arm 322 extends along the adjacent guide rod 22, a bush 323 is fixedly connected to the extending end of the sub-arm 322, and the bush 323 is rotatably and slidably engaged with the adjacent guide rod 22.

In another embodiment, a guiding key is disposed between the first arm 32 and the guide rod 22 to limit the rotation of the first arm 32 and the second arm 25 about the guide rod 22.

In the present embodiment, as shown in fig. 2 and 3, the cap screwing device 3 includes a sun gear 34, a planetary gear 35 and a transmission mechanism, wherein the sun gear 34 is fixedly mounted on the lifting rod 6; a plurality of planet gears 35 are arranged corresponding to the guide rod 22, the planet gears 35 are rotatably arranged on the guide rod 22 and are meshed with the sun gear 34, so that the planet gears 35 revolve around the sun gear 34 and rotate; the transmission mechanism is used for connecting the planetary gear 35 with the cap screwing head 33 in a transmission manner, so that the planetary gear 35 drives the cap screwing head 33 to rotate.

The planetary gear 35 revolves around the sun gear 34 under the driving of the guide rod 22, because the sun gear 34 is meshed with the planetary gear 35, and the sun gear 34 is fixed relative to the lifting rod 6, the sun gear 34 and the planetary gear 35 interact with each other to enable the planetary gear 35 to rotate, and the cap screwing head 33 is driven to rotate through the transmission mechanism, and meanwhile, under the action of the guide rod 22, the cap screwing head 33 revolves around the lifting rod 6 along with the first support arm 32 to complete a cap screwing stroke in the horizontal direction.

In this embodiment, as shown in fig. 2, the rotary capping machine 100 further includes a main support 10, the main support 10 is rotatably mounted on the upper end of the lifting rod 6 through a fifth bearing 101, and the plurality of guide rods 22 are fixedly connected to the periphery of the support 10; the fifth bearing 101 is a thrust bearing for axially supporting the main holder 10.

Further, the planetary gear 35 is axially fixed relative to the guide rod 22, the planetary gear 35 is connected to the lifting rod 6 through the guide rod 22 and the main support 10, and the sun gear 24 and the planetary gear 35 are always engaged during the lifting of the lifting rod 6, so that the sun gear 34 and the planetary gear 35 can be provided to be light and thin, and the material cost can be saved.

In this embodiment, as shown in fig. 2, 3 and 5, the transmission mechanism includes a rotating shaft 36, a first pulley 37, a second pulley 38 and a guide shaft 39, the rotating shaft 36 is rotatably mounted on one end of the first arm 32 away from the lifting rod 6 through a third bearing 261, and is disposed along the vertical direction, and the screw cap head 33 is fixedly mounted on the lower end of the rotating shaft 36; the first belt pulley 37 is fixedly arranged at the upper end of the rotating shaft 36; the second pulley 38 is movably mounted on the guide rod 22 up and down and rotatably, the second pulley 38 and the first arm 32 are axially fixed and relatively rotatably connected through a fourth bearing 324, the second pulley 38 and an inner ring of the fourth bearing 324 are fixedly connected, the first arm 32 and an outer ring of the fourth bearing 324 are fixedly connected, the diameter of the second pulley 38 is larger than that of the first pulley 37, and the first pulley 37 and the second pulley 38 are in transmission connection through a belt 40; the plurality of guide shafts 36 are provided, the plurality of guide shafts 36 are movably disposed through the planetary gear 35 in an up-and-down manner, and the plurality of guide shafts 36 are fixedly connected to the second pulley 38, so that the planetary gear 35 drives the second pulley 38 to rotate.

The rotating shaft 36 is rotatably mounted at one end of the first arm 32 far away from the lifting rod 6 through the third bearing 261, and the second pulley 38 is connected with the planetary gear 35 through the guide shaft 36, so that the second pulley 38 can rotate synchronously with the planetary gear 35; because the diameter of the second belt wheel 38 is larger than that of the first belt wheel 37, and the second belt wheel 38 and the first belt wheel 37 are connected through the belt 40, the first belt wheel 37 can be driven by the second belt wheel 38 to rotate at a higher speed, so as to drive the cap screwing head 33 to rotate at a high speed, and complete the cap screwing stroke in the horizontal direction with high efficiency, and the cap screwing device is particularly suitable for cap screwing sealing operation with long guide distance of a deep-hole threaded cap.

In this embodiment, as shown in fig. 2 and 4, the bottle supporting device 2 further includes a thumb wheel 23, a disc cam 24, a second arm 25, a gripper 26 and a transmission device, the thumb wheel 23 is disposed above the rotating disc 22 and fixedly connected to the rotating disc 22, a plurality of notches 231 are disposed on an edge of the thumb wheel 23, and the plurality of notches 231 form a plurality of fixing stations 4; the disc cam 24 is arranged between the driving convex column 31 and the thumb wheel 23 and is fixedly arranged on the lifting rod 6; a plurality of second support arms 25 are arranged corresponding to the fixed stations 4, the second support arms 25 extend along the radial direction relative to the lifting rod, and the plurality of second support arms 25 are correspondingly arranged on the plurality of guide rods 22; the holders 26 are provided in a plurality corresponding to the fixing stations 4, a plurality of the holders 26 are horizontally movably mounted on one end of the second arms 25 away from the disc-shaped cam 24 to hold and fix the bottles, and the holders 26 can be opened to different degrees to adapt to bottles with different diameters; the transmission device is arranged on the second support arm 25; the transmission device is in transmission connection with the disc cam 24 and the clamper 26, so that the disc cam 24 drives the clamper 26 to open and close.

The bottle is initially positioned by the fixing station 4 formed by the gap 231, so that the bottle opening of the bottle is just opposite to the cap screwing head 33, and the bottle is further clamped by the clamp 26 in order to ensure the stability of the bottle in revolution.

In this embodiment, as shown in fig. 2 and 4, the gripper 26 is a manipulator, the transmission device is a stroke switch 27, the stroke switch 27 is provided in plurality corresponding to the plurality of grippers 26, one end of the stroke switch 27 away from the disc cam 24 is electrically connected to the manipulator, one end of the stroke switch 27 close to the disc cam 24 abuts against a side surface of the disc cam 24, so as to trigger the stroke switch to operate through a protrusion on the side surface of the disc cam 24, so as to control opening and closing of the manipulator.

The manipulator can set up to control degree of opening and shutting and centre gripping dynamics through pneumatic drive, hydraulic drive or electronic according to the production demand to the bottle of adaptation variation in size or material difference.

In another embodiment, the transmission device is a plurality of telescopic rods, the plurality of telescopic rods are correspondingly and fixedly mounted on the plurality of second support arms 25, one end of each telescopic rod, which is far away from the disc cam 24, is fixedly connected with the gripper 26, one end of each telescopic rod, which is close to the disc cam 24, is abutted against the side surface of the disc cam 24 through a second roller 271, so that the telescopic rods are driven to extend through bulges on the side surface of the disc cam 24, the gripper 26 is driven to move and open and close towards the outer side of the disc cam 24, and the bottle bodies are clamped or released.

In this embodiment, as shown in fig. 1, the rotary cap screwing machine 100 further includes a bottle feeding structure 7 and a bottle discharging structure 8, wherein the bottle feeding structure 7 is connected to the bottle feeding end of the bottle supporting device 2 in a matching manner, so as to continuously feed the bottles into the bottle supporting device 2; the bottle outlet structure 8 is matched and connected with the bottle outlet end of the bottle supporting device 2 so as to continuously send out the bottles from the bottle supporting device 2.

In this embodiment, as shown in fig. 1, the bottle feeding structure 7 includes a screw 71, a first guard bar 72 and a first thumb wheel 73, in order to keep the bottles stable, the screw 71 is provided with a gradually sparse thread along the conveying direction, the gradually sparse thread can decelerate the bottles conveyed from the upstream of production and then convey the bottles to the downstream of production, the first thumb wheel 73 is provided with a plurality of first stations 731 for positioning the bottles, the screw 71 is tangential to the first stations 732, and a first conveying channel is formed between the first guard bar 72 and the screw 71; the bottle discharging structure 8 comprises a second thumb wheel 81 and a second guardrail 81, wherein a plurality of second stations 811 are arranged on the second thumb wheel 81, one side of the second guardrail and the first thumb wheel 73 form a second conveying channel for conveying bottles, and the other side of the second guardrail and the second thumb wheel 81 form a third conveying channel for conveying bottles; and the rotary cap screwing machine 100 further comprises a third guardrail 9, and the third guardrail 9 is arranged at the edge of the rotating disc.

The screw 71 rotates to decelerate the bottles through the first conveying channel and then convey the bottles to the first station 731, the first thumb wheel 73 rotates to convey the bottles to the fixing station 4 through the second conveying channel, and the cap screwing is started.

After the cap screwing is finished, the bottle bodies are conveyed to the second station 811 by the fixed station, and the second thumb wheel 81 rotates to convey the bottle bodies to the downstream of production through the third conveying channel.

In this embodiment, as shown in fig. 2, the guide rod 22 is vertically movably inserted through the dial wheel 23 and the rotary disk 21 in sequence, the rotary cap screwing machine 100 further includes a plurality of sub-supporting frames 11, the plurality of sub-supporting frames 11 are vertically movably sleeved on the guide rod 22 correspondingly, and are above the planetary gear 35, the upper end of the guide shaft 39 is fixedly connected to the sub-supporting frames 11, the guide shaft 39 is vertically movably inserted through the planetary gear 35, and the lower end is fixedly connected to the second pulley 38; when the lifting rod 6 is adjusted up and down, the planetary gear 35 and the sun gear 34 are lifted up and down synchronously under the connection effect of the main support 10 through the guide rod 22, and the first supporting arm 32 drives the cap screwing head 33 to lift up and down synchronously under the support of the driving convex column 31, so that the cap screwing device 3 can be adjusted up and down to adapt to the cap screwing work of bottles with different heights.

First support arm 32 with one section that spiral cover head 33 is connected passes through scalable regulation is realized to first pars contractilis, second support arm 25 with holder 26 one section of connecting includes the second pars contractilis, also can realize flexible regulation, through adjusting first pars contractilis with the second pars contractilis will belt 40 is changed into not unidimensional belt again, makes spiral cover head 33 realizes the regulation of horizontal direction, makes spiral cover head 33 corresponds the bottle center all the time to the spiral cover work of the bottle of adaptation different diameters.

In another embodiment, the main support 10 includes a plurality of telescopic arms radially distributed corresponding to the guide rods 22, the plurality of telescopic arms are horizontally disposed, one end of each telescopic arm, which is far away from the lifting rod 6, is fixedly connected to the guide rod 22, and the horizontal adjustment of the rotary cover portion 5 can be realized by adjusting the telescopic arms, so as to adapt to the rotary cover operation of bottles with different diameters.

In another embodiment, the lower end of the guide rod 22 is fixedly disposed on the rotating disc 21, the vertical height difference between the first roller 321 and the mounting point of the guide rod 22 relative to the first support arm 32 is adjustable, and by adjusting the height difference, the vertical adjustment of the cap screwing device 3 can be realized under the condition that the height of the first roller 321 relative to the annular driving surface 311 is kept unchanged, so as to adapt to the cap screwing operation of bottles with different heights.

In another embodiment, the first arm 32, the second pulley 38 and the planetary gear 35 are sequentially sleeved on the guide rod 22 from top to bottom, the second pulley 38 is axially fixed to the first arm 32 and can be relatively rotatably connected to the first arm, the second pulley 38 and the planetary gear 35 are fixedly connected to each other, the second pulley 38 and the planetary gear 35 can rotate around the guide rod 22, and the first arm 32, the second pulley 38 and the planetary gear 35 can move up and down along the guide rod 22; correspondingly, the upper end of the rotating shaft 36 is rotatably mounted at one end of the first supporting arm 32 far away from the lifting rod 6, the first belt pulley 37 is fixedly mounted at a position corresponding to the second belt pulley 38 in the middle of the rotating shaft 36, and the first belt pulley 37 and the second belt pulley 38 are connected through a belt 40.

The sun gear 34 and the driving convex column 31 are integrally arranged, teeth meshed with the planet gear 35 are arranged on the side surface of the driving convex column 31, and the planet gear 35 is always meshed with the teeth on the side surface of the driving convex column 31 in the process that the planet gear 35 moves up and down along with the first supporting arm 32.

In this embodiment, as shown in fig. 1, 3, 4 and 5, there are 12 fixing stations 4, and there are 12 corresponding guide rods 22, notches 231, second arms 25, grippers 26, travel switches 27, second rollers 271, first arms 32, first rollers 321, sub-arms 322, bearing pads 323, cap heads 33, first pulleys 37, second pulleys 38 and belts 40, and there are 4 guide shafts 39 on each guide rod 22.

In another embodiment, there are 98 fixing stations 4, and there are 98 corresponding guide rods 22, notches 231, second arms 25, grippers 26, travel switches 27, second rollers 271, first arms 32, first rollers 321, sub-arms 322, bearing pads 323, capping heads 33, first pulleys 37, second pulleys 38, and belts 40.

According to actual conditions, a plurality of fixed stations 4 can be arranged, the number of the corresponding structures is set according to the number of the fixed stations 4, the number of the fixed stations 4 is not limited by the invention, and the arrangement of the corresponding structures can meet the functional effect which can be achieved by the invention.

In the rotary cap screwing machine provided by the invention, in order to enable the gripper 26 to better grip a bottle body and enable the cap screwing head 33 to better grip a bottle cap, anti-skid layers are respectively arranged on the gripper 26 and the cap screwing head 33.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A rotary cap screwing machine is characterized by comprising:

a machine base;

the bottle supporting device is arranged on the base and is provided with a fixing station for fixing the bottle body; and the number of the first and second groups,

2. The rotary cap screwing machine according to claim 1, wherein the bottle supporting device comprises a rotating disc, and a plurality of fixing stations are arranged on the rotating disc and distributed along the circumferential direction of the rotating disc;

3. The rotary cap screwing machine according to claim 2, wherein the base is rotatably provided with a worm gear, the worm gear is provided with an internal thread, the lower portion of the lifting rod is provided with an external thread, and the internal thread and the external thread are matched to drive the lifting rod to be adjusted up and down on the base, so that the mounting position of the cap screwing part on the base can be adjusted up and down.

4. The rotary cap screwing machine as recited in claim 2, wherein the rotating disc is provided with a plurality of guide rods, the plurality of guide rods being arranged corresponding to the plurality of fixed stations;

5. The rotary cap screwing machine according to claim 4, wherein the first arm is provided with a sub-arm extending along the adjacent guide rod, and the extending end of the sub-arm is fixedly connected with a bearing bush which is rotatably and slidably clamped on the adjacent guide rod.

6. The rotary capping machine of claim 4 wherein the capping device comprises:

the sun gear is fixedly arranged on the lifting rod;

7. The rotary cap screwing machine according to claim 6, wherein the transmission mechanism comprises:

8. The rotary cap screwing machine according to claim 4, wherein the bottle supporting device further comprises:

the transmission device is arranged on the second support arm;

9. The rotary cap screwing machine as claimed in claim 8, wherein the gripper is a manipulator, the transmission device is a travel switch, the travel switch is provided in plurality corresponding to the grippers, one end of the travel switch, which is far away from the disc cam, is connected to the manipulator, and one end of the travel switch, which is close to the disc cam, is abutted against the side surface of the disc cam, so as to activate the travel switch via the protrusion on the side surface of the disc cam, thereby controlling the manipulator to open and close.

10. The rotary cap screwing machine as recited in claim 1, further comprising:

the bottle feeding structure is matched and connected with the bottle supporting device so as to continuously feed the bottle bodies into the bottle supporting device; and the number of the first and second groups,

the bottle discharging structure is matched and connected with the bottle supporting device so as to continuously send out the bottle bodies from the bottle supporting device.