CN215946701U - Spiral cover device of medicine liquid filling machine - Google Patents

Abstract

The utility model discloses a cap screwing device of a medicine filling machine, a cap screwing mechanism and a cap screwing support frame, wherein the cap screwing support frame comprises: a main drive shaft disposed upright; the rotary cover mounting disc and the medicine bottle mounting disc are sequentially arranged from top to bottom, and are fixedly connected with the main driving shaft at respective rotation centers; at least two groups of the cover screwing mechanisms are circumferentially and rotatably connected to the cover screwing mounting disc and downwardly suspended; at least two medicine bottle installing ports are formed in the medicine bottle installing disc along the circumferential direction of the medicine bottle installing disc, and each medicine bottle installing port is located under the corresponding group of cap screwing mechanisms. According to the utility model, synchronous rotation driving of a plurality of groups of cap screwing mechanisms can be realized by only using one main driving shaft and the driving device in transmission connection with the main driving shaft, so that cap screwing rhythms are unified when more than two medicine bottles are subjected to cap screwing operation, the tightness of each medicine bottle cap screwing can be ensured, the cap screwing efficiency is improved, and the cap screwing quality is also improved.

Description

Spiral cover device of medicine liquid filling machine

Technical Field

The utility model relates to the field of medicine filling, in particular to a cap screwing device of a medicine filling machine.

Background

In the field of pharmaceutical filling, it is known to employ various types of capping devices to cap and seal filled vials. In the process of researching and implementing the cap screwing and sealing of the filled medicine bottle, researchers find that the cap screwing device in the prior art has at least the following problems:

structural design is unreasonable, leads to using more driver to come the multi-target drive, very easily appears the spiral cover rhythm and is not unified when leading to the fact from this to carry out the spiral cover operation to more than two medicine bottles, and then finally leads to the spiral cover in-process to appear overrevolving or the not enough problem of screwing.

In view of the above, it is necessary to develop a cap screwing device for a medicine filling machine to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems of the cap screwing device, the utility model aims to solve the technical problem of providing the cap screwing device of the medicine filling machine, which can realize synchronous rotation driving of a plurality of groups of cap screwing mechanisms by only using one main driving shaft and a driving device in transmission connection with the main driving shaft, so that the cap screwing rhythm can be unified when more than two medicine bottles are subjected to cap screwing operation, the tightness of the cap screwing of each medicine bottle can be ensured, the cap screwing efficiency is improved, and the cap screwing quality is also improved.

In terms of the cap screwing device, the cap screwing device of the medicine filling machine for solving the technical problems comprises a cap screwing mechanism and a cap screwing support frame, wherein the cap screwing support frame comprises:

a main drive shaft disposed upright; and

the rotary cover mounting disc and the medicine bottle mounting disc are sequentially arranged from top to bottom, and are fixedly connected with the main driving shaft at respective rotation centers;

at least two groups of the cover screwing mechanisms are circumferentially and rotatably connected to the cover screwing mounting disc and downwardly suspended; at least two medicine bottle installing ports are formed in the medicine bottle installing disc along the circumferential direction of the medicine bottle installing disc, and each medicine bottle installing port is located under the corresponding group of cap screwing mechanisms.

Optionally, still include the rotation driving frame, the rotation driving frame includes:

the rotation mounting disc is fixedly connected with the main driving shaft at the rotating center; and

the annular transmission ring is fixedly connected with the autorotation mounting disc and surrounds the screw cap mounting disc, and the inner periphery of the transmission ring is provided with meshing teeth;

at least two rotating mounting holes are circumferentially formed in the rotary cover mounting disc, the rotary cover mechanism is provided with a filling pipe, each rotary cover mechanism is mounted in a corresponding rotating mounting hole through the filling pipe in a rotating mode and at least partially exposed, at least two transmission gears are connected to the rotary cover mounting disc in a circumferential rotating mode, each transmission gear is arranged between the corresponding rotating mounting hole and the transmission ring, and each transmission gear is meshed with the corresponding one of the filling pipes of the rotary cover mechanism and the transmission ring.

Optionally, the bottom end of the filling pipe is formed with a butt joint portion, and the cap screwing mechanism further includes:

the cover body screwing assembly is arranged right below the filling pipe, and a cover body falling channel penetrating from the top to the bottom of the cover body screwing assembly is formed in the cover body screwing assembly; and

the posture maintaining assembly comprises an elastic reset component and a maintaining sleeve fixedly sleeved on the butting part, the maintaining sleeve is hollow in the interior and is opened at the bottom to form a butting port, and at least part of the butting part is inserted from the top of the maintaining sleeve and extends into the interior of the maintaining sleeve;

wherein the top end of the cap screw-in assembly is inserted into the interior of the retaining sleeve from the interface and the cap drop channel is aligned with the interface; the cover body screwing-in assembly can slide along the vertical direction relative to the maintaining sleeve so as to switch between a close state and a far state; the elastic reset component acts between the maintaining sleeve and the cover body screwing-in component; the elastic reset part can be elastically deformed, and when the vertical upward jacking force borne by the cover body screwing-in assembly is smaller than the elastic restoring force of the elastic reset part, the cover body screwing-in assembly can slide downwards along the vertical direction to reset from the close state to the far state.

Optionally, the filling pipe further comprises a mounting seat fixedly mounted in a corresponding one of the rotary mounting holes, and the filling pipe is rotatably mounted in the mounting seat so that the butt joint part is exposed from the bottom of the mounting seat.

Optionally, a filling channel penetrating through the upper end and the lower end of the filling pipe is formed in the filling pipe, the cover body is loaded from the top of the filling channel, slides out from the bottom and finally falls into the cover body falling channel, so that a plurality of cover bodies are sequentially stacked in the cover body falling channel to form a cover body stack, wherein at least one cover body is temporarily stored in the butt joint part of the filling pipe; when the cover body screwing-in assembly is in the approaching state, the filling pipe is inserted into the cover body falling channel and acts on the cover body at the topmost part of the cover body stack, so that the cover body stack integrally moves downwards and finally the cover body at the bottommost part of the cover body stack leaves the cover body falling channel.

Optionally, at least three sets of cover retaining structures arranged around the filling channel are provided near the bottom of the filling channel, the cover retaining structures including:

the straight line section is embedded in the inner side wall of the filling pipe and is rotationally connected with the filling pipe;

the bending section is fixedly connected to the bottom of the straight line section and forms an inclination angle alpha extending outwards in an inclined mode, so that the bottom caliber size of the filling channel is gradually reduced in the direction from top to bottom; and

the elastic supporting part is elastically supported between the bending section and the inner side wall of the filling pipe;

wherein the linear segment is rotatable relative to the fill tube to switch the cover retention feature between a retained state and a released state; the elastic supporting part can be elastically deformed, and when the lateral pressure of the bent section from the cover body is larger than the elastic restoring force of the elastic supporting part, the straight section can rotate relative to the filling pipe to reset from the holding state to the releasing state.

Optionally, the top of lid whereabouts passageway is formed with the butt joint passageway of pushing down with communicateing, the butt joint passageway of pushing down includes from last to joining in marriage the section and slope guide section to consecutive straight line down, wherein, the straight line joins in marriage the internal diameter that the section is greater than or equal to the external diameter of filling the pipe, the internal diameter of slope guide section is the tendency of convergent in order to join in marriage to the straight line from last to the orientation down and carries out size transition between section and the lid whereabouts passageway.

Optionally, a sealing ring is disposed on the outer side of the bottom of the filling pipe, and when the filling pipe is inserted into the downward pressing butt joint channel, the sealing ring seals between the filling pipe and the linear matching section.

Optionally, the vacuum generator is further included, and an air exhaust pipeline of the vacuum generator is communicated with the pressing butt joint channel.

Optionally, when the cover screwing-in assembly is in the approaching state, the filling pipe is inserted into the downward pressing butt joint channel and acts on the cover at the top of the cover stack to enable the cover stack to integrally move downward and finally enable the cover at the bottom of the cover stack to leave the cover dropping channel, and then the cover screwing-in assembly gradually recovers to the distant state under the action of the elastic restoring component, the vacuum generator starts to vacuumize the downward pressing butt joint channel, and the cover at the bottom of the filling channel starts to laterally press the bending section under the action of suction force and finally enables the lateral pressing force to be greater than the restoring force of the elastic supporting component, so that the cover slips from the filling channel and falls into the downward pressing butt joint channel.

One of the above technical solutions has the following advantages or beneficial effects: because it only uses a main drive shaft and drive arrangement who is connected with its transmission can realize the synchronous rotation drive to multiunit spiral cover mechanism to make the spiral cover rhythm can obtain unifying when carrying out the spiral cover operation to more than two medicine bottles, the degree of closure of each medicine bottle spiral cover can obtain guaranteeing, has also improved spiral cover quality when having improved spiral cover efficiency.

Another technical scheme in the above technical scheme has the following advantages or beneficial effects: because the top of lid whereabouts passageway is formed with the butt joint passageway of pushing down with communicateing, the butt joint passageway of pushing down includes from last to joining in marriage the section and slope guide section to consecutive straight line down, wherein, the straight line joins in marriage the internal diameter that the section is greater than or equal to fill the external diameter of pipe, the internal diameter of slope guide section is the tendency of convergent in order to join in marriage to the straight line from last to the orientation down and carry out size transition between section and the lid whereabouts passageway to make the lid can be smoothly guided and finally slide in the lid whereabouts passageway.

Another technical scheme in the above technical scheme has the following advantages or beneficial effects: because the cover bodies are in the frustum-shaped structure with the small top outer diameter and the large bottom outer diameter, when at least two cover bodies are stacked up and down to form a cover body stack, the top of the next cover body can be at least partially wedged into the bottom opening of the last cover body, and a step part can be formed between the lower edge of the opening of the last cover body and the outer side of the top of the next cover body; a holding and accommodating cavity sunken on the inner side wall of the filling pipe is formed near the bottom of the filling channel, when the cover body holding structure is in a holding state, at least part of the bent sections protrudes out of the holding and accommodating cavity, so that at least part of the distance between every two bent sections is smaller than the inner diameter of the filling channel, and further the bent sections can lift and hold the bottom of the next cover body to prevent the next cover body from falling, so that the next cover body is held in the filling channel; when the cover body retaining structure is in a releasing state, the bent sections are all retracted and contained in the holding and containing cavity, meanwhile, the top of the straight section protrudes out of the holding and containing cavity, the top of the straight section is wedged below the step section, so that the straight section can lift the previous cover body and keep the previous cover body to prevent the previous cover body from falling, and the bottom of the next cover body falls from the bottom opening of the filling channel due to the loss of the support of the bent sections and finally falls into the cover body falling channel below the filling pipe.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description relate only to some embodiments of the present invention and are not limiting thereof, wherein:

fig. 1 is a perspective view of a screw cap device of a medicine filling machine according to an embodiment of the present invention;

fig. 2 is a partial perspective view of a screw cap device of a medicine filling machine according to an embodiment of the present invention, in which the internal structure thereof is seen;

fig. 3 is a longitudinal sectional view of a cap screwing mechanism in a cap screwing device of a medicine filling machine according to an embodiment of the present invention;

fig. 4 is a partially enlarged view of a cap retaining structure of a screw cap device of a medicine filling machine according to an embodiment of the present invention;

fig. 5 is a longitudinal sectional view of a cap buffer unit and a cap in a capping device of a medicine filling machine according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc., are defined with respect to the configurations shown in the respective drawings, and in particular, "height" corresponds to a dimension from top to bottom, "width" corresponds to a dimension from left to right, "depth" corresponds to a dimension from front to rear, which are relative concepts, and thus may be varied accordingly depending on the position in which it is used, and thus these or other orientations should not be construed as limiting terms.

Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

Example 1

Fig. 1 to 5 show an embodiment 1 of the present invention, and with reference to the illustrations in fig. 1 to 2, it can be seen that a cap screwing device of a medicine filling machine includes a cap screwing mechanism 1 and a cap screwing support frame 2, and the cap screwing support frame 2 includes:

a main drive shaft 21 disposed upright; and

a screw cap mounting plate 24 and a medicine bottle mounting plate 25 which are arranged in sequence from top to bottom and fixedly connected with the main driving shaft 21 at respective rotation centers;

wherein, at least two groups of the cap screwing mechanisms 1 are circumferentially and rotatably connected on the cap screwing mounting disc 24 and hang downwards; at least two medicine bottle installing openings 251 are formed in the medicine bottle installing disc 25 along the circumferential direction of the medicine bottle installing disc, and each medicine bottle installing opening 251 is located right below a corresponding group of the cap screwing mechanisms 1. In the embodiment shown in fig. 1 and 2, a main drive gear 22 is fixedly connected to the main drive shaft 21.

Referring to fig. 2, the present invention further includes a spin carrier 23, and the spin carrier 23 includes:

a rotation mounting plate 231 fixed to the main drive shaft 21 at a rotation center; and

an annular transmission ring 232 fixedly connected to the rotation mounting plate 231 and surrounding the cap screwing mounting plate 24 therein, wherein the transmission ring 232 is provided with engaging teeth 232a on the inner circumference thereof;

at least two rotating mounting holes 241 are circumferentially formed in the cover screwing mounting disc 24, the cover screwing mechanism 1 is provided with a filling pipe 112, each set of cover screwing mechanism 1 is rotatably mounted in a corresponding rotating mounting hole 241 through the filling pipe 112 and at least partially exposed, at least two transmission gears 242 are connected to the cover screwing mounting disc 24 in a circumferential rotating manner, each transmission gear 242 is arranged between a corresponding rotating mounting hole 241 and the transmission ring 232, and each transmission gear 242 is respectively meshed with the filling pipe 112 of the cover screwing mechanism 1 and the transmission ring 232.

Referring to fig. 5 and 4, the filling pipe 112 has a butt portion 1122 formed at a bottom end thereof, and the capping mechanism 1 further includes:

a lid body screw-in module 13 provided directly below the filling pipe 112, in which a lid body dropping passage 1323 penetrating from the top to the bottom thereof is formed; and

an attitude maintaining assembly 12, including an elastic restoring member 123 and a maintaining sleeve 121 fixedly sleeved on the abutting portion 1122, wherein the maintaining sleeve 121 is hollow and is opened at the bottom to form a butt joint, and at least part of the abutting portion 1122 is inserted from the top of the maintaining sleeve 121 and extends into the maintaining sleeve 121;

wherein the top end of the cap screw-in assembly 13 is inserted into the interior of the retaining sleeve 121 from the interface and the cap drop channel 1323 is aligned with the interface 1122; the cover screwing-in component 13 can slide in the vertical direction relative to the maintaining sleeve 121 to switch between a close state and a far state; the elastic reset part 123 acts between the maintaining sleeve 121 and the cover body screwing component 13; the elastic restoring member 123 can be elastically deformed, and when the vertical upward supporting force applied to the cover screwing-in assembly 13 is smaller than the elastic restoring force of the elastic restoring member 123, the cover screwing-in assembly 13 can slide downward in the vertical direction to restore from the close state to the distant state. Since it is possible to periodically perform a single supply of the lid bodies 14 to the lid body screwing assembly 13 through the filling pipe 112 without reloading the next lid body 14 from the bottom of the screwing mechanism after screwing the previous lid body 14, a self-contained continuous supply of lid bodies can be achieved, thereby improving the screwing efficiency while reducing the screwing step. For example, the resilient return member 123 may be, but is not limited to, a spring and/or a torsion spring, or may be of any configuration so long as the resilient return member 123 functions as described herein. For another example, a first shoulder 133 is formed on the cover screwing-in component 13, a second holding shoulder 122 is formed on the holding sleeve 121, and the elastic restoring member 123 is elastically supported between the first shoulder 133 and the second holding shoulder 122.

Referring again to fig. 5, the charging assembly 11 further includes a mounting seat 111 fixedly installed in a corresponding one of the rotary mounting holes 241, and an upper rolling bearing 113 and a lower rolling bearing 114 embedded in the mounting seat 111, and the charging pipe 112 is rotatably installed in the mounting seat 111 through the upper rolling bearing 113 and the lower rolling bearing 114 such that the docking portion 1122 is exposed from the bottom of the mounting seat 111. So that the filling tube 112 can be driven in rotation about its axis by means of the rotary drive.

Referring to fig. 3 again, a filling channel 1121 penetrating through the upper and lower ends of the filling pipe 112 is formed in the filling pipe 112, and the cover bodies 14 are loaded from the top of the filling channel 1121, slide out from the bottom, and finally fall into the cover body falling channel 1323, so that a plurality of cover bodies 14 are stacked in sequence in the cover body falling channel 1323 to form a cover body stack, wherein at least one cover body 14 is temporarily stored in the abutting portion 1122 of the filling pipe 112; when the cover screw-in assembly 13 is in the close state, the filling pipe 112 is inserted into the cover drop passage 1323 and acts on the cover 14 at the top of the stack to move the stack downward as a whole and finally to remove the cover 14 at the bottom of the stack from the cover drop passage 1323, thereby completing a single feeding of the cover 14.

Referring to fig. 3 and 4, at least three sets of cover body retaining structures 115 arranged around the filling channel 1121 are disposed near the bottom of the filling channel 1121, and the cover body retaining structures 115 include:

a straight section 1151 embedded in the inner sidewall of the filling tube 112 and rotatably connected to the filling tube 112 at a hinge 1154;

a bending section 1152 fixedly connected to the bottom of the straight section 1151, and an outer side surface 1152' of the bending section is provided with an inclination angle α extending obliquely outwards, so that the bottom caliber size of the filling channel 1121 is gradually reduced in the direction from top to bottom; and

an elastic support member 1153 elastically supported between the bent section 1152 and an inner sidewall of the filling pipe 112;

wherein the straight segment 1151 is rotatable relative to the fill tube 112 to switch the cap retaining structure 115 between a retained state and a released state; the elastic support member 1153 is elastically deformable, and when the bent segment 1152 receives a lateral pressure from the cap body 14 greater than an elastic restoring force of the elastic support member 1153, the linear segment 1151 is rotatable with respect to the filling pipe 112 to return from the holding state to the releasing state. In the embodiment shown in fig. 3, the angle of the inclination angle α is 10 ° to 75 °.

The cover bodies 14 are in a frustum-shaped structure with a small top outer diameter and a large bottom outer diameter, so that when at least two cover bodies 14 are stacked up and down to form a cover body stack, the top of the next cover body 14 can be at least partially wedged into the bottom opening of the previous cover body 14, and a step part 141 can be formed between the lower edge of the opening of the previous cover body 14 and the outer side of the top of the next cover body 14; a holding and accommodating cavity 1123 recessed on the inner side wall of the filling pipe 112 is formed near the bottom of the filling channel 1121, and when the cap body holding structure 115 is in a holding state, the bent segments 1152 at least partially protrude out of the holding and accommodating cavity 1123, so that at least a part of the distance between every two bent segments 1152 is smaller than the inner diameter of the filling channel 1121, and further, the bent segments 1152 can lift and hold the bottom of the next cap body 14 against falling, thereby holding the next cap body 14 in the filling channel 1121; when the cover retaining structure 115 is in the released state, the bent segment 1152 is completely retracted and accommodated in the retaining and accommodating cavity 1123, and the top of the straight segment 1151 protrudes out of the retaining and accommodating cavity 1123 and the top of the straight segment 1151 is wedged below the step 141, so that the straight segment 1151 can lift the previous cover 14 to keep it from falling, and the bottom of the next cover 14 is dropped from the bottom opening of the filling channel 1121 and finally falls into the cover falling channel 1323 below the filling pipe 112 because the support of the bent segment 1152 is lost.

Referring again to fig. 3, the top end of the cover falling passage 1323 is communicatively formed with a push-down docking passage, which includes a straight coupling section 1321 and an inclined guiding section 1322 that are sequentially connected from top to bottom, wherein the inner diameter of the straight coupling section 1321 is greater than or equal to the outer diameter of the filling pipe 112, and the inner diameter of the inclined guiding section 1322 is tapered in the direction from top to bottom to perform size transition between the straight coupling section 1321 and the cover falling passage 1323, so that the cover 14 can be smoothly guided to finally slide into the cover falling passage 1323.

Further, a sealing ring is disposed on the bottom outer side of the filling pipe 112, and when the filling pipe 112 is inserted into the press-fit docking passage, the sealing ring seals between the filling pipe 112 and the linear mating section 1321.

Further, the cap screwing mechanism 1 of the medicine filling machine further comprises a vacuum generator, and an air exhaust pipeline 1325 of the vacuum generator is communicated with the downward pressing butt joint channel. In the embodiment shown in FIG. 3, the air extraction duct 1325 communicates with the linear mating segment 1321.

Referring again to fig. 3, when the cover screwing-in assembly 13 is in the approaching state, the filling pipe 112 is inserted into the press-fit docking channel and acts on the cover 14 at the top of the stack to move the stack downward and finally to separate the cover 14 at the bottom of the stack from the cover dropping channel 1323, and then the cover screwing-in assembly 13 gradually returns to the departing state under the action of the elastic restoring member 123, the vacuum generator starts to vacuumize the press-fit docking channel, the bottom 1142 of the cover 14 at the bottom of the filling channel 1121 starts to press the bent section 1152 in the lateral direction under the suction force and finally makes the lateral pressing force greater than the restoring force of the elastic supporting member 1153, so that the cover 14 slides out of the filling channel 1121 and drops into the press-fit docking channel. In the embodiment shown in fig. 3, a ring of check ring 1324 is disposed at the junction of the straight segment 1151 and the bent segment 1152, the check ring 1324 is configured as a ratchet and anti-backlash structure, such that the check ring 1324 can rotate downward at a certain angle relative to the root thereof when receiving a downward pressing force to allow the cover 14 to pass downward, and the check ring 1324 can rotate upward at a certain angle relative to the root thereof when receiving an upward pressing force to prevent the cover 14 from sliding upward, thereby preventing the cover 14 from being separated from the cover falling passage 1323 into the downward pressing abutting passage by a vacuum suction force.

Example 2

Fig. 3 and 5 also show embodiment 2 of the present invention, and embodiment 2 differs from embodiment 1 in that:

at least two cover buffer units 134 are circumferentially arranged near the bottom outlet of the cover falling channel 1323, every two cover buffer units 134 are arranged oppositely and at intervals to form a cover buffer space 1343 between the two cover buffer units, and the cover buffer space is aligned with the cover buffer units 134; the lid buffer unit 134 includes:

a buffer memory main body 1341 rotatably connected to the cover screwing-in component 13;

a buffer recovery member elastically acting between the buffer main body 1341 and the cover screwing-in component 13;

an upper cache limit portion 1344 extending horizontally outward from the top inside of the cache body 1341; and

a lower cache limit portion 1342 extending horizontally outward from the bottom outside of the cache main body 1341;

the upper cache limit part 1344 and the lower cache limit part 1342 are disposed opposite to each other up and down to limit the top and the bottom of the lid cache space, respectively; the lid buffer unit 134 can rotate relative to the lid screwing-in component 13 to switch between a buffer state and a release state, and the buffer upper limit portion 1344 and the buffer lower limit portion 1342 protrude from the inner side wall of the lid falling passage 1323; the buffer recovery member elastically acts between the buffer main body 1341 and the cover screwing-in component 13, so that the cover buffer unit 134 can reset the cover buffer unit 134 to the buffer state after releasing the buffered cover 14 in the release state.

Referring again to fig. 1 and 3, a cap screwing structure located right below the cap buffer unit 134 is disposed at the bottom of the cap screwing assembly 13, and the cap screwing structure includes:

a cap-rotating channel 137 aligned with the cap cache space;

a cap retaining ring 135 disposed around the bottom of the cap screwing channel 137 and fixedly connected to the cap screwing-in component 13; and

at least three cap retaining members 136 fitted on the side wall of the cap retaining ring 135,

wherein, a clamping reset component is elastically supported between the cover body holding component 136 and the cover body holding ring 135, when the cover body holding component 136 is in an initial state, the end part thereof protrudes out of the side wall of the cover body holding ring 135, and when the end part of the cover body holding component 136 is pressed, the end part thereof is completely sunk into the side wall of the cover body holding ring 135; the caliber of the cap screwing channel 137 is consistent with the peripheral caliber of the cap body 14.

After the cap body buffer unit 134 releases the cap body 14 buffered by the cap body buffer unit in the released state, the cap body 14 falls into the cap screwing channel 137, and the cap body 14 can be temporarily stored in the cap screwing channel 137 under the limit of the cap body holding component 136, when the mouth of the medicine bottle to be capped intrudes into the cap screwing channel 137 from the bottom of the cap screwing channel 137, at least the mouth of the medicine bottle is inserted into the cap body 14, at this time, the filling tube 112 is driven to rotate and drive the mouth of the medicine bottle to further intrude into the cap screwing channel 137, the cap body can be smoothly screwed onto the mouth of the medicine bottle, after the screwing operation is completed, the cap body is separated from the bottom of the cap screwing channel 137 along with the medicine bottle so as to change the cap screwing channel 137 into an empty state, and during the cap screwing process, the medicine bottle can simultaneously provide upward supporting force for the cap body screwing assembly 13, so that the cap body screwing assembly 13 can slide upward in the vertical direction to switch from the far state to the close state In the approaching state, the filling pipe 112 is inserted into the downward pressing butt-joint channel and acts on the cover 14 at the top of the cover stack to make the cover stack move downward and finally make the cover 14 at the bottom of the cover stack leave the cover dropping channel 1323, after the cover 14 at the bottom leaves the cover dropping channel 1323, the cover buffer unit 134 is pushed to rotate and push the cover 14 buffered by the cover buffer unit 134 into the empty cover rotating channel 137 to prepare for rotating the cover, and the cover 14 at the bottom is buffered in the cover buffer space; when the cover screwing-in assembly 13 is then gradually restored to the remote state by the elastic restoring member 123, the vacuum generator starts to vacuumize the downward pressing abutting channel, and the bottommost cover 14 in the filling channel 1121 starts to press the bent section 1152 laterally under the suction force and finally makes the lateral pressing force greater than the restoring force of the elastic supporting member 1153, so that the cover 14 slides off the filling channel 1121 and falls into the downward pressing abutting channel.

In the embodiment shown in fig. 1, a plurality of elastic retaining units 1371 are formed on the inner sidewall of the cap screwing passage 137 in a longitudinal arrangement, so that the frictional force to the cap body 14 can be increased during the cap screwing process, thereby improving the cap screwing success rate and the cap screwing efficiency.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

The features of the different implementations described herein may be combined to form other embodiments not specifically set forth above. The components may be omitted from the structures described herein without adversely affecting their operation. Further, various individual components may be combined into one or more individual components to perform the functions described herein.

Furthermore, while embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in a variety of fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (10)

1. The utility model provides a spiral cover device of medicine liquid filling machine, includes spiral cover mechanism (1) and spiral cover support frame (2), its characterized in that, spiral cover support frame (2) include:

a main drive shaft (21) disposed upright; and

a screw cap mounting disc (24) and a medicine bottle mounting disc (25) which are arranged from top to bottom in sequence and are fixedly connected with the main driving shaft (21) at respective rotating centers;

wherein at least two groups of the cap screwing mechanisms (1) are circumferentially and rotatably connected to the cap screwing mounting disc (24) and downwardly suspended; at least two medicine bottle mounting openings (251) are formed in the medicine bottle mounting disc (25) along the circumferential direction of the medicine bottle mounting disc, and each medicine bottle mounting opening (251) is located right below the corresponding group of cap screwing mechanisms (1).

2. The cap screwing device of a medicine filling machine according to claim 1, further comprising an autorotation carrier (23), the autorotation carrier (23) comprising:

a rotation mounting plate (231) which is fixedly connected to the main drive shaft (21) at a rotation center; and

an annular transmission ring (232) which is fixedly connected with the rotation mounting disc (231) and surrounds the screw cap mounting disc (24), wherein the inner periphery of the transmission ring (232) is provided with meshing teeth (232 a);

at least two rotating mounting holes (241) are circumferentially formed in the rotary cover mounting disc (24), the rotary cover mechanism (1) is provided with a filling pipe (112), each group of rotary cover mechanisms (1) is rotatably mounted in a corresponding rotating mounting hole (241) through the filling pipe (112) and at least partially exposed, the circumferential rotation of the rotary cover mounting disc (24) is connected with at least two transmission gears (242), each transmission gear (242) is arranged between the corresponding rotating mounting hole (241) and the transmission ring (232), and each transmission gear (242) is respectively meshed with the corresponding group of the filling pipe (112) of the rotary cover mechanism (1) and the transmission ring (232).

3. The cap rotating device of a medicine filling machine as claimed in claim 2, wherein the bottom end of the filling pipe (112) is formed with an abutment (1122), and the cap rotating mechanism (1) further comprises:

a lid body screw-in module (13) provided directly below the filling pipe (112) and having a lid body dropping passage (1323) formed therein so as to extend from the top to the bottom thereof; and

an attitude maintaining assembly (12) comprising an elastic reset component (123) and a maintaining sleeve (121) fixedly sleeved on the butting part (1122), wherein the maintaining sleeve (121) is hollow and is opened at the bottom to form a butting port, and at least part of the butting part (1122) is inserted from the top of the maintaining sleeve (121) and extends into the interior of the maintaining sleeve (121);

wherein the top end of the cap screw-in assembly (13) is inserted into the interior of the retaining sleeve (121) from the interface and the cap drop channel (1323) is aligned with the interface (1122); the cover body screwing-in component (13) can slide along the vertical direction relative to the maintaining sleeve (121) to switch between a close state and a far state; the elastic reset part (123) acts between the maintaining sleeve (121) and the cover body screwing component (13); the elastic reset part (123) can be elastically deformed, and when the vertical upward jacking force applied to the cover body screwing-in assembly (13) is smaller than the elastic restoring force of the elastic reset part (123), the cover body screwing-in assembly (13) can slide downwards along the vertical direction to reset from the close state to the far state.

4. The cap rotating device of a medicine filling machine as claimed in claim 3, further comprising a mounting seat (111) fixedly installed in a corresponding one of the rotary installation holes (241), wherein the filling pipe (112) is rotatably installed in the mounting seat (111) such that the abutting portion (1122) is exposed from a bottom of the mounting seat (111).

5. The cap screwing device of a medicine filling machine according to claim 3, wherein the filling pipe (112) is provided with a filling channel (1121) penetrating through the upper and lower ends thereof, a cap (14) is loaded from the top of the filling channel (1121) and slides out from the bottom to finally fall into the cap falling channel (1323) so that a plurality of caps (14) are stacked in sequence in the cap falling channel (1323) to form a cap stack, wherein at least one cap (14) is temporarily stored in the butt joint part (1122) of the filling pipe (112); when the cover screw-in assembly (13) is in the close state, the filling pipe (112) is inserted into the cover dropping passage (1323) and acts on the cover (14) at the top of the stack to move the stack downward and finally to make the cover (14) at the bottom of the stack leave the cover dropping passage (1323).

6. The screw-top device of a pharmaceutical filling machine of claim 5, wherein at least three sets of cap retaining structures (115) are provided about the fill channel (1121) near the bottom of the fill channel (1121), the cap retaining structures (115) comprising:

a straight line segment (1151) embedded in the inner side wall of the filling pipe (112) and rotatably connected with the filling pipe (112);

a bending section (1152) which is fixedly connected to the bottom of the straight section (1151) and forms an inclination angle alpha extending outwards in an inclined manner, so that the diameter of the bottom of the loading channel (1121) is gradually reduced in the direction from top to bottom; and

an elastic support member (1153) elastically supported between the bent section (1152) and an inner side wall of the filling pipe (112);

wherein the linear segment (1151) is rotatable relative to the fill tube (112) to switch the cap retaining structure (115) between a retained state and a released state; the resilient support member (1153) is resiliently deformable, and the linear section (1151) is rotatable relative to the filling tube (112) to return from the retained state to the released state when the bent section (1152) is subjected to a lateral pressure from the cover (14) that is greater than the resilient restoring force of the resilient support member (1153).

7. The cap screwing device of a medicine filling machine according to claim 6, wherein the cap body dropping passage (1323) is formed with a push-down docking passage at a top end thereof, the push-down docking passage comprising a straight coupling section (1321) and an inclined guide section (1322) which are connected in sequence from top to bottom, wherein an inner diameter of the straight coupling section (1321) is greater than or equal to an outer diameter of the filling pipe (112), and an inner diameter of the inclined guide section (1322) is tapered in a direction from top to bottom to perform a dimensional transition between the straight coupling section (1321) and the cap body dropping passage (1323).

8. The cap rotating device of a medicine filling machine of claim 7, wherein the bottom outside of the filling tube (112) is provided with a sealing ring, and when the filling tube (112) is inserted into the press-fit docking channel, the sealing ring enables the filling tube (112) to form a seal with the linear mating section (1321).

9. The screw cap device of a pharmaceutical filling machine of claim 8, further comprising a vacuum generator, the suction line (1325) of which communicates with the push down interface passage.

10. The cap screwing device for a medicine filling machine according to claim 9, wherein when the cap screwing-in assembly (13) is in the approaching state, the filling pipe (112) is inserted into the downward abutting passage and acts on the topmost cap (14) of the stack to move the stack as a whole downward and finally to move the bottommost cap (14) of the stack away from the cap dropping passage (1323), and then the cap screwing-in assembly (13) gradually returns to the departing state under the action of the elastic restoring member (123), the vacuum generator starts to vacuumize the downward abutting passage, the bottommost cap (14) in the filling passage (1121) starts to press the bent section (1152) laterally under the action of suction force and finally makes the lateral pressing force greater than the restoring force of the elastic supporting member (1153), thereby causing the cover (14) to slip off of the loading channel (1121) and fall into the press-down docking channel.

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