A capping device for a medicine filling machine

Abstract

The present invention discloses a capping device of a medicine filling machine, a capping mechanism and a capping support frame, wherein the capping support frame comprises: a main driving shaft arranged upright; and a capping mounting disk and a medicine bottle mounting disk arranged in sequence from top to bottom, both of which are fixedly connected to the main driving shaft at their respective rotation centers; wherein at least two groups of the capping mechanisms are circumferentially rotatably connected to the capping mounting disk and hang downward; the medicine bottle mounting disk is provided with at least two medicine bottle mounting ports along its circumference, and each of the medicine bottle mounting ports is located directly below a corresponding group of the capping mechanisms. According to the present invention, it only uses one main driving shaft and a driving device connected thereto in transmission to realize synchronous rotation drive of multiple groups of capping mechanisms, so that the capping rhythm is unified when capping more than two medicine bottles is performed, and the tightness of the capping of each medicine bottle can be guaranteed, thereby improving the capping efficiency and the capping quality.

Description

Technical Field

[0001] The invention relates to the field of medicine filling, and in particular to a capping device of a medicine filling machine. Background Art

[0002] In the field of medicine filling, it is well known that screw capping devices of different structures are used to screw caps on filled medicine bottles. In the process of studying and realizing screw capping on filled medicine bottles, researchers found that the screw capping devices in the prior art have at least the following problems:

[0003] The unreasonable structural design requires the use of more drivers for multi-target driving, which makes it very easy for the capping rhythm to be inconsistent when capping more than two medicine bottles, and ultimately leads to problems such as over-tightening or under-tightening during the capping process.

[0004] In view of this, it is necessary to develop a capping device for a medicine filling machine to solve the above problems. Summary of the invention

[0005] In order to overcome the problems existing in the above-mentioned capping device, the technical problem to be solved by the present invention is to provide a capping device for a pharmaceutical filling machine, which can realize the synchronous rotation drive of multiple sets of capping mechanisms by using only one main driving shaft and a driving device connected thereto, so that the capping rhythm can be unified when capping more than two medicine bottles, and the tightness of the capping of each medicine bottle can be guaranteed, thereby improving the capping efficiency and the capping quality.

[0006] As for the capping device, the capping device of the medicine filling machine of the present invention for solving the above technical problems comprises a capping mechanism and a capping support frame, and the capping support frame comprises:

[0007] a main drive shaft disposed upright; and

[0008] A capping mounting plate and a medicine bottle mounting plate are arranged in sequence from top to bottom, and both are fixedly connected to the main drive shaft at their respective rotation centers;

[0009] Among them, at least two groups of the screw-on capping mechanisms are circumferentially rotatably connected to the screw-on capping mounting plate and hang downwardly; at least two medicine bottle mounting openings are opened on the medicine bottle mounting plate along its circumference, and each of the medicine bottle mounting openings is located directly below a corresponding group of the screw-on capping mechanisms.

[0010] Optionally, it further includes a self-rotating transmission frame, wherein the self-rotating transmission frame includes:

[0011] A self-rotating mounting plate fixedly connected to the main drive shaft at the center of rotation; and

[0012] An annular transmission ring, which is fixedly connected to the self-rotating mounting disk and surrounds the rotary cover mounting disk, and the inner circumference of the transmission ring is provided with meshing teeth;

[0013] Among them, at least two rotating mounting holes are circumferentially opened on the screw cap mounting disk, the screw cap mechanism has a filling tube, each group of the screw cap mechanisms is rotatably mounted in a corresponding rotating mounting hole through its filling tube and is at least partially exposed, and the circumferential rotation of the screw cap mounting disk is connected with at least two transmission gears, each transmission gear is arranged between a corresponding rotating mounting hole and the transmission ring, and each transmission gear is respectively meshed with the filling tube and the transmission ring of a corresponding group of the screw cap mechanisms.

[0014] Optionally, a docking portion is formed at the bottom end of the filling tube, and the capping mechanism further comprises:

[0015] A cover screw-in assembly disposed directly below the filling tube, wherein a cover falling channel is formed therein and runs through from the top to the bottom thereof; and

[0016] A posture maintaining assembly, comprising an elastic reset component and a maintaining sleeve fixedly sleeved on the docking portion, wherein the interior of the maintaining sleeve is hollow and open at the bottom to form a docking port, and at least a portion of the docking portion is inserted from the top of the maintaining sleeve and extends into the interior of the maintaining sleeve;

[0017] Among them, the top end of the cover body screw-in assembly is inserted into the interior of the maintaining sleeve from the docking port, and the cover body falling channel is aligned with the docking portion; the cover body screw-in assembly can slide in the vertical direction relative to the maintaining sleeve to switch between the approaching state and the distant state; the elastic reset component acts between the maintaining sleeve and the cover body screw-in assembly; the elastic reset component can undergo elastic deformation, and when the vertical upward holding force applied to the cover body screw-in assembly is less than the elastic restoring force of the elastic reset component, the cover body screw-in assembly can slide downward in the vertical direction to reset from the approaching state to the distant state.

[0018] Optionally, it further includes a mounting seat fixedly mounted in a corresponding one of the rotating mounting holes, the filling tube is rotatably mounted in the mounting seat and the docking portion is exposed from the bottom of the mounting seat.

[0019] Optionally, the loading tube is provided with a loading channel running through its upper and lower ends, and the cover body is loaded from the top of the loading channel and slides out from the bottom and finally falls into the cover body falling channel, so that multiple cover bodies are stacked in sequence in the cover body falling channel to form a cover body stack, wherein at least one cover body is temporarily stored in the docking portion of the loading tube; when the cover body screw-in assembly is in the approaching state, the loading tube is inserted into the cover body falling channel and acts on the cover body at the top of the cover body stack, so that the cover body stack moves downward as a whole and finally causes the cover body at the bottom of the cover body stack to leave the cover body falling channel.

[0020] Optionally, at least three groups of cover retaining structures arranged around the filling channel are provided near the bottom of the filling channel, and the cover retaining structures include:

[0021] a straight line segment, which is embedded in the inner wall of the filling tube and is rotatably connected to the filling tube;

[0022] A bent section, which is fixed to the bottom of the straight section and has an inclination angle α extending obliquely outward, so that the bottom diameter of the filling channel is gradually reduced from top to bottom; and

[0023] an elastic supporting member elastically supported between the bending section and the inner side wall of the filling tube;

[0024] Among them, the straight section can rotate relative to the loading tube so that the cover body holding structure can switch between a holding state and a release state; the elastic support component can undergo elastic deformation, and when the lateral pressure from the cover body to the bent section is greater than the elastic restoring force of the elastic support component, the straight section can rotate relative to the loading tube to restore from the holding state to the release state.

[0025] Optionally, a downward-pressing docking channel is formed at the top end of the cover body falling channel, and the downward-pressing docking channel includes a straight matching section and an inclined guiding section which are sequentially connected from top to bottom, wherein the inner diameter of the straight matching section is greater than or equal to the outer diameter of the filling tube, and the inner diameter of the inclined guiding section is gradually reduced from top to bottom to make a size transition between the straight matching section and the cover body falling channel.

[0026] Optionally, a sealing ring is provided on the outer side of the bottom of the filling tube, and when the filling tube is inserted into the downward-pressed docking channel, the sealing ring forms a seal between the filling tube and the straight-line mating section.

[0027] Optionally, a vacuum generator is also included, and the air extraction pipeline of the vacuum generator is connected to the downward pressure docking channel.

[0028] Optionally, when the cover body screw-in assembly is in the approaching state, the loading tube is inserted into the downward-pressing docking channel and acts on the cover body at the top of the cover body stack so that the cover body stack moves downward as a whole and eventually causes the cover body at the bottom of the cover body stack to leave the cover body falling channel, and then when the cover body selection assembly gradually returns to the leaving state under the action of the elastic reset component, the vacuum generator starts to vacuum the downward-pressing docking channel, and the cover body at the bottom of the loading channel starts to laterally compress the bending section under the action of the suction force and eventually makes the lateral compressing force greater than the restoring force of the elastic support component, thereby causing the cover body to slip off the loading channel and fall into the downward-pressing docking channel.

[0029] One of the above technical solutions has the following advantages or beneficial effects: since it only uses one main driving shaft and a driving device connected thereto to realize the synchronous rotation drive of multiple sets of capping mechanisms, the capping rhythm can be unified when capping more than two medicine bottles, and the tightness of the caps of each medicine bottle can be guaranteed, thereby improving the capping efficiency and the capping quality.

[0030] Another technical solution among the above technical solutions has the following advantages or beneficial effects: since a downward-pressing docking channel is formed at the top end of the cover body falling channel, the downward-pressing docking channel includes a straight matching section and an inclined guiding section which are sequentially connected from top to bottom, wherein the inner diameter of the straight matching section is greater than or equal to the outer diameter of the filling tube, and the inner diameter of the inclined guiding section is gradually contracted from top to bottom to make a size transition between the straight matching section and the cover body falling channel, so that the cover body can be smoothly guided and finally slide into the cover body falling channel.

[0031] Another technical solution among the above technical solutions has the following advantages or beneficial effects: since the cover body is a frustum-shaped structure with a small outer diameter at the top and a large outer diameter at the bottom, 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 previous cover body, so that a step can be formed between the lower edge of the opening of the previous cover body and the outer side of the top of the next cover body; a holding cavity is formed near the bottom of the loading channel and is recessed on the inner side wall of the loading tube. When the cover body holding structure is in a holding state, the bent section at least partially protrudes out of the holding cavity, so that the bending sections between the two sections can be adjusted. At least part of the distance between them is smaller than the inner diameter of the filling channel, so that the bent section can lift and hold the bottom of the next cover body to prevent it from falling, thereby keeping the next cover body in the filling channel; when the cover holding structure is in a released state, the bent section is completely retracted and accommodated in the holding cavity, and at the same time, the top of the straight section protrudes out of the holding cavity and makes the top of the straight section wedged under the step portion, so that the straight section can lift and hold the previous cover body to prevent it from falling, and the bottom of the next cover body loses the support of the bent section and falls from the bottom opening of the filling channel and finally falls into the cover falling channel under the filling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0033] Figure 1 A three-dimensional diagram of a capping device of a medicine filling machine according to an embodiment of the present invention;

[0034] Figure 2 It is a partial three-dimensional diagram of a capping device of a medicine filling machine according to one embodiment of the present invention, in which its internal structure can be observed;

[0035] Figure 3 A longitudinal sectional view of a capping mechanism in a capping device of a medicine filling machine according to one embodiment of the present invention;

[0036] Figure 4 A partial enlarged view of a cap holding structure in a capping device of a medicine filling machine according to an embodiment of the present invention;

[0037] Figure 5 It is a longitudinal cross-sectional view of the cover body buffer unit and the cover body in the capping device of the medicine filling machine according to one embodiment of the present invention when they are matched. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the drawings, the shapes and dimensions may be exaggerated for clarity, and the same reference numerals will be used throughout to designate the same or like components.

[0040] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the invention belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "one" or "the" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] In the following description, words such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are defined relative to the structure shown in the drawings. In particular, "height" is equivalent to the dimension from top to bottom, "width" is equivalent to the dimension from left to right, and "depth" is equivalent to the dimension from front to back. They are relative concepts and may change accordingly according to their different positions and different usage states. Therefore, these or other directions should not be interpreted as restrictive terms.

[0042] Terms related to attachment, coupling, and the like (eg, "connected" and "attached") refer to either a fixed or attached relationship between structures, either directly or indirectly, and either movable or rigid attachments or relationships, unless expressly stated otherwise, of the structures to one another through intermediate structures.

[0043] Example 1

[0044] Figure 1 to Figure 5 Embodiment 1 of the present invention is shown, combined with Figure 1-2As shown in the figure, it can be seen that the capping device of the medicine filling machine includes a capping mechanism 1 and a capping support frame 2, characterized in that the capping support frame 2 includes:

[0045] A main drive shaft 21 disposed upright; and

[0046] The capping mounting plate 24 and the medicine bottle mounting plate 25 are arranged in sequence from top to bottom, and both are fixedly connected to the main driving shaft 21 at their respective rotation centers;

[0047] At least two groups of the screw-on capping mechanisms 1 are circumferentially connected to the screw-on capping mounting plate 24 and hang downward; at least two medicine bottle mounting openings 251 are opened along the circumference of the medicine bottle mounting plate 25, and each of the medicine bottle mounting openings 251 is located directly below a corresponding group of the screw-on capping mechanisms 1. Figure 1 and Figure 2 In the illustrated embodiment, a main driving gear 22 is fixedly connected to the main driving shaft 21 .

[0048] Reference Figure 2 , further comprising a self-rotating transmission frame 23, wherein the self-rotating transmission frame 23 comprises:

[0049] A self-rotating mounting plate 231, which is fixedly connected to the main drive shaft 21 at the center of rotation; and

[0050] An annular transmission ring 232 is fixedly connected to the self-rotating mounting plate 231 and surrounds the rotary cover mounting plate 24 therein, and the inner circumference of the transmission ring 232 is provided with meshing teeth 232a;

[0051] Among them, at least two rotating mounting holes 241 are circumferentially opened on the screw cap mounting disk 24, the screw cap mechanism 1 has a filling tube 112, each group of the screw cap mechanisms 1 is rotatably mounted in a corresponding rotating mounting hole 241 through its filling tube 112 and is at least partially exposed, and the circumferential rotation of the screw cap mounting disk 24 is connected to at least two transmission gears 242, 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 tube 112 and the transmission ring 232 of a corresponding group of the screw cap mechanisms 1.

[0052] Reference Figure 5 and Figure 4 The bottom end of the filling tube 112 is formed with a docking portion 1122, and the capping mechanism 1 further includes:

[0053] A cover screw-in assembly 13 disposed directly below the filling tube 112, wherein a cover falling channel 1323 is formed therein and passes through from the top to the bottom thereof; and

[0054] The posture maintaining assembly 12 comprises an elastic reset component 123 and a maintaining sleeve 121 fixedly sleeved on the docking portion 1122, wherein the interior of the maintaining sleeve 121 is hollow and open at the bottom to form a docking port, and at least a portion of the docking portion 1122 is inserted from the top of the maintaining sleeve 121 and extends into the interior of the maintaining sleeve 121;

[0055] Among them, the top end of the cover body screw-in component 13 is inserted into the interior of the maintaining sleeve 121 from the docking port, and the cover body falling channel 1323 is aligned with the docking portion 1122; the cover body screw-in component 13 can slide in the vertical direction relative to the maintaining sleeve 121 to switch between the approaching state and the distant state; the elastic reset component 123 acts between the maintaining sleeve 121 and the cover body screw-in component 13; the elastic reset component 123 can undergo elastic deformation, and when the vertical upward supporting force applied to the cover body screw-in component 13 is less than the elastic restoring force of the elastic reset component 123, the cover body screw-in component 13 can slide downward in the vertical direction to reset from the approaching state to the distant state. Since it can periodically supply a single cover 14 to the cover screw-in assembly 13 through the filling tube 112, there is no need to reload the next cover 14 from the bottom of the cover screwing mechanism after the previous cover 14 is screwed, and a self-sufficient cover continuous supply can be achieved, thereby reducing the number of screwing steps and improving the screwing efficiency. For example, the elastic reset component 123 can be, but is not limited to, a spring and / or a torsion spring, or, as long as the elastic reset component 123 performs the function described herein, it can be of any structure. For another example, a first shoulder 133 is formed on the cover screw-in assembly 13, a second maintaining shoulder 122 is formed on the maintaining sleeve 121, and the elastic reset component 123 is elastically supported between the first shoulder 133 and the second maintaining shoulder 122.

[0056] Refer again Figure 5 The loading assembly 11 further comprises a mounting seat 111 fixedly mounted in a corresponding one of the rotating mounting holes 241, and an upper rolling bearing 113 and a lower rolling bearing 114 embedded in the mounting seat 111. The loading tube 112 is rotatably mounted in the mounting seat 111 through the upper rolling bearing 113 and the lower rolling bearing 114, and the docking portion 1122 is exposed from the bottom of the mounting seat 111. Thus, the loading tube 112 can be driven to rotate around its axis by a rotating driver.

[0057] Refer again Figure 3The filling tube 112 is provided with a filling channel 1121 which runs through its upper and lower ends. The cover 14 is loaded from the top of the filling channel 1121 and slides out from the bottom and finally falls into the cover falling channel 1323, so that multiple cover bodies 14 are stacked in sequence in the cover falling channel 1323 to form a cover body pile, wherein at least one cover body 14 is temporarily stored in the docking portion 1122 of the filling tube 112; when the cover body screw-in assembly 13 is in the approaching state, the filling tube 112 is inserted into the cover body falling channel 1323 and acts on the cover body 14 at the top of the cover body stack, so that the cover body stack moves downward as a whole and finally makes the cover body 14 at the bottom of the cover body stack leave the cover body falling channel 1323, thereby completing the single supply of the cover body 14.

[0058] Reference Figure 3 and Figure 4 At least three groups of cover holding structures 115 are arranged around the filling channel 1121 near the bottom of the filling channel 1121, and the cover holding structures 115 include:

[0059] A straight section 1151, which is embedded in the inner wall of the filling tube 112 and is rotatably connected to the filling tube 112 at a hinge 1154;

[0060] The bent section 1152 is fixedly connected to the bottom of the straight section 1151, and the outer side surface 1152' thereof is formed with an inclination angle α extending obliquely outward, so that the bottom diameter size of the filling channel 1121 is gradually reduced from top to bottom; and

[0061] An elastic supporting member 1153, which is elastically supported between the bending section 1152 and the inner wall of the filling tube 112;

[0062] The straight segment 1151 can rotate relative to the loading tube 112 to switch the cover holding structure 115 between the holding state and the release state; the elastic support component 1153 can be elastically deformed, and when the lateral pressure from the cover 14 on the bent segment 1152 is greater than the elastic restoring force of the elastic support component 1153, the straight segment 1151 can rotate relative to the loading tube 112 to return from the holding state to the release state. Figure 3 In the illustrated embodiment, the angle of inclination α is in the range of 10° to 75°.

[0063] The cover body 14 is a frustum-shaped structure with a small outer diameter at the top and a large outer diameter at the bottom, 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, so that a step portion 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 retaining cavity 1123 is formed near the bottom of the filling channel 1121 and is recessed on the inner side wall of the filling tube 112. When the cover body retaining structure 115 is in a retaining state, the bent sections 1152 at least partially protrude outside the retaining cavity 1123, so that at least part of the distance between the two bent sections 1152 is smaller than the inner diameter of the filling channel 1121, thereby making the bent sections 1152 The bent section 1152 can lift and hold the bottom of the next cover body 14 to prevent it from falling, thereby holding the next cover body 14 in the loading channel 1121; when the cover body holding structure 115 is in a released state, the bent section 1152 is completely retracted and accommodated in the holding cavity 1123, and at the same time, the top of the straight section 1151 protrudes out of the holding cavity 1123 and makes the top of the straight section 1151 wedged under the step portion 141 so that the straight section 1151 can lift and hold the previous cover body 14 to prevent it from falling, and the bottom of the next cover body 14 loses the support of the bent section 1152 and falls from the bottom opening of the loading channel 1121 and finally falls into the cover body falling channel 1323 under the loading tube 112.

[0064] Refer again Figure 3 The top of the cover body falling channel 1323 is connected to form a downward pressing docking channel, and the downward pressing docking channel includes a straight matching section 1321 and an inclined guiding section 1322 which are sequentially connected from top to bottom, wherein the inner diameter of the straight matching section 1321 is greater than or equal to the outer diameter of the filling tube 112, and the inner diameter of the inclined guiding section 1322 is gradually reduced from top to bottom to make a size transition between the straight matching section 1321 and the cover body falling channel 1323, so that the cover body 14 can be smoothly guided and finally slide into the cover body falling channel 1323.

[0065] Furthermore, a sealing ring is provided on the outer side of the bottom of the filling tube 112 , and when the filling tube 112 is inserted into the downward-pressed docking channel, the sealing ring forms a seal between the filling tube 112 and the straight-line mating section 1321 .

[0066] Furthermore, the capping mechanism 1 of the medicine filling machine further comprises a vacuum generator, and the air extraction pipeline 1325 of the vacuum generator is connected to the downward pressing docking channel. Figure 3 In the illustrated embodiment, the air extraction duct 1325 is in communication with the straight coupling section 1321 .

[0067] Refer again Figure 3 When the cover body screw-in assembly 13 is in the approaching state, the filling tube 112 is inserted into the downward pressing docking channel and acts on the cover body 14 at the top of the cover body stack, causing the cover body stack to move downward as a whole and eventually causing the cover body 14 at the bottom of the cover body stack to leave the cover body falling channel 1323. Subsequently, when the cover body selection assembly 13 gradually returns to the leaving state under the action of the elastic reset component 123, the vacuum generator begins to evacuate the downward pressing docking channel. Under the action of the suction force, the bottom 1142 of the cover body 14 at the bottom of the filling channel 1121 begins to laterally compress the bending section 1152 and eventually makes the lateral compressive force greater than the restoring force of the elastic support component 1153, thereby causing the cover body 14 to slip off the filling channel 1121 and fall into the downward pressing docking channel. Figure 3 In the illustrated embodiment, a circle of check ring 1324 is provided at the junction of the straight section 1151 and the bent section 1152. The check ring 1324 is configured as a ratchet check tooth structure, so that the check ring 1324 can rotate downward by a certain angle relative to its root when subjected to a downward pressure force, thereby allowing the cover body 14 to pass downward, and the check ring 1324 can rotate upward by a certain angle relative to its root when subjected to an upward pressure force and prevent the cover body 14 from sliding upward, thereby preventing the cover body 14 from detaching from the cover body falling channel 1323 under the action of the vacuum suction force and entering the downward pressure docking channel.

[0068] Example 2

[0069] Figure 3 and Figure 5 Embodiment 2 of the present invention is also shown. The difference between Embodiment 2 and Embodiment 1 is that:

[0070] At least two cover body buffer units 134 are arranged around the bottom outlet of the cover body falling channel 1323, and the cover body buffer units 134 are arranged opposite to each other and spaced apart to form a cover body buffer space 1343 located therebetween, and the cover body buffer space is aligned with the cover body buffer units 134; the cover body buffer unit 134 includes:

[0071] A cache body 1341, which is rotatably connected to the cover screw-in assembly 13;

[0072] A cache recovery component, which elastically acts between the cache body 1341 and the cover screw-in assembly 13;

[0073] A cache upper limit portion 1344 extending horizontally outward from the top inner side of the cache body 1341; and

[0074] A cache lower limit portion 1342 extending horizontally outward from the bottom outer side of the cache body 1341;

[0075] Among them, the cache upper limit portion 1344 and the cache lower limit portion 1342 are arranged relatively to each other in the upper and lower parts to limit the top and the top of the cover body cache space respectively; the cover body cache unit 134 can rotate relative to the cover body screw-in assembly 13 to switch between the cache state and the release state, and the cache upper limit portion 1344 and the cache lower limit portion 1342 protrude from the inner wall of the cover body falling channel 1323; the cache recovery component elastically acts between the cache body 1341 and the cover body screw-in assembly 13, so that after the cover body cache unit 134 releases the cached cover 14 in the release state, the cache recovery component can reset the cover body cache unit 134 to the cache state.

[0076] Refer again Figure 1 and Figure 3 The bottom of the cover screw-in assembly 13 is provided with a screw-cover structure located directly below the cover cache unit 134, and the screw-cover structure includes:

[0077] A cover screw channel 137, which is aligned with the cover body buffer space;

[0078] A cover retaining ring 135, which is disposed around the bottom of the cover screwing channel 137 and is fixedly connected to the cover screwing assembly 13; and

[0079] At least three cover retaining members 136 are embedded in the side wall of the cover retaining ring 135.

[0080] Among them, a clamping reset component is elastically supported between the cover body retaining component 136 and the cover body retaining ring 135. When the cover body retaining component 136 is in the initial state, its end protrudes from the side wall of the cover body retaining ring 135. When the end of the cover body retaining component 136 is compressed, it is completely immersed in the side wall of the cover body retaining ring 135. The diameter of the screw cover channel 137 is consistent with the outer peripheral diameter of the cover body 14.

[0081] After the cover body cache unit 134 releases the cached cover body 14 in the release state, the cover body 14 falls into the capping channel 137, and the cover body 14 can be temporarily stored in the capping channel 137 under the limit of the cover body holding component 136. When the mouth of the medicine bottle to be capped intrudes into the capping channel 137 from the bottom of the capping channel 137, at least the mouth of the medicine bottle is inserted into the cover body 14, and at this time, the filling tube 112 is driven to rotate and drive the mouth of the medicine bottle to further intrude. The capping channel 137 can smoothly screw the cap onto the mouth of the medicine bottle. After the screwing operation is completed, the cap leaves the bottom of the capping channel 137 along with the medicine bottle, thereby turning the capping channel 137 into an empty state. During the capping process, the medicine bottle can also provide an upward holding force to the cap screwing assembly 13, so that the cap screwing assembly 13 can slide upward in the vertical direction to switch from the away state to the approaching state. In the approaching state, the filling tube 1 The cover 12 is inserted into the downward-pressing docking channel and acts on the cover 14 at the top of the cover stack, so that the cover stack moves downward as a whole and finally makes the cover 14 at the bottom of the cover stack leave the cover falling channel 1323. After leaving the cover falling channel 1323, the cover 14 at the bottom pushes the cover buffer unit 134 to rotate and pushes the cover 14 cached by the cover buffer unit 134 into the vacant cover screwing channel 137 to prepare for cover screwing, and the cover 14 at the bottom is cached in the cover buffer space. Then, when the cover body is screwed into the assembly 13 and gradually returns to the separation state under the action of the elastic reset component 123, the vacuum generator begins to evacuate the downward-pressing docking channel, and the cover body 14 at the bottom of the filling channel 1121 begins to laterally compress the bending section 1152 under the action of the suction force and finally makes the lateral compressing force greater than the restoring force of the elastic support component 1153, thereby causing the cover body 14 to slip off the filling channel 1121 and fall into the downward-pressing docking channel.

[0082] exist Figure 1 In the illustrated embodiment, a plurality of longitudinally arranged elastic retaining units 1371 are formed on the inner side wall of the capping channel 137, so that the friction force on the cover body 14 can be increased during the capping process, thereby improving the capping success rate and efficiency.

[0083] The number of devices and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be obvious to those skilled in the art.

[0084] The components of the various embodiments described herein may be combined to form other embodiments not specifically stated above. Components may be excluded from the structures described herein without adversely affecting their operation. In addition, various individual components may be combined into one or more individual components to perform the functions described herein.

[0085] In addition, although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A capping device for a medicine filling machine, comprising a capping mechanism (1) and a capping support frame (2), characterized in that: The rotary cap support frame (2) comprises: A main drive shaft (21) disposed upright; and A capping mounting plate (24) and a medicine bottle mounting plate (25) are arranged in sequence from top to bottom, and both are fixedly connected to the main drive shaft (21) at their respective rotation centers; At least two groups of the screw-capping mechanisms (1) are circumferentially connected to the screw-capping mounting plate (24) and hang downward; at least two medicine bottle mounting openings (251) are provided on the medicine bottle mounting plate (25) along its circumference, and each of the medicine bottle mounting openings (251) is located directly below a corresponding group of the screw-capping mechanisms (1); It also includes a self-rotating transmission frame (23), wherein the self-rotating transmission frame (23) includes: A self-rotating mounting plate (231) which is fixedly connected to the main drive shaft (21) at the center of rotation; and an annular transmission ring (232) which is fixedly connected to the self-rotating mounting disk (231) and surrounds the rotary cover mounting disk (24) therein, and the inner circumference of the transmission ring (232) is provided with meshing teeth (232a); The screw cap mounting plate (24) is provided with at least two rotating mounting holes (241) circumferentially, the screw cap mechanism (1) has a filling tube (112), each group of the screw cap mechanisms (1) is rotatably mounted in a corresponding rotating mounting hole (241) through its filling tube (112) and is at least partially exposed, the screw cap mounting plate (24) is connected to at least two transmission gears (242) for circumferential rotation, each transmission gear (242) is provided between a corresponding rotating mounting hole (241) and the transmission ring (232), and each transmission gear (242) is respectively meshed with the filling tube (112) and the transmission ring (232) of a corresponding group of the screw cap mechanisms (1); The bottom end of the filling tube (112) is formed with a docking portion (1122), and the capping mechanism (1) further comprises: A cover screw-in assembly (13) disposed directly below the filling tube (112), wherein a cover falling channel (1323) is formed therein and runs through from the top to the bottom thereof; and A posture maintaining assembly (12), comprising an elastic reset component (123) and a maintaining sleeve (121) fixedly sleeved on the docking portion (1122), the interior of the maintaining sleeve (121) being hollow and open at the bottom to form a docking port, and at least a portion of the docking portion (1122) being inserted from the top of the maintaining sleeve (121) and extending into the interior of the maintaining sleeve (121); The top end of the cover screw-in assembly (13) is inserted from the docking port into the interior of the maintenance sleeve (121), and the cover falling channel (1323) is aligned with the docking portion (1122); the cover screw-in assembly (13) can slide in a vertical direction relative to the maintenance sleeve (121) to switch between an approaching state and a distant state; the elastic reset component (123) acts between the maintenance sleeve (121) and the cover screw-in assembly (13); the elastic reset component (123) can be elastically deformed, and when the vertical upward holding force on the cover screw-in assembly (13) is less than the elastic restoring force of the elastic reset component (123), the cover screw-in assembly (13) can slide downward in a vertical direction to reset from the approaching state to the distant state; At least two cover body buffer units (134) are arranged around the bottom outlet of the cover body falling channel (1323), and the cover body buffer units (134) are arranged opposite to each other and spaced apart to form a cover body buffer space (1343) located therebetween, and the cover body buffer space is aligned with the cover body buffer unit (134); the cover body buffer unit (134) comprises: A cache body (1341) which is rotationally connected to the cover screw-in assembly (13); A cache recovery component, which elastically acts between the cache body (1341) and the cover screw-in assembly (13); A cache upper limit portion (1344), which extends horizontally outward from the inner side of the top of the cache body (1341); and A cache lower limit portion (1342), which extends horizontally outward from the outer side of the bottom of the cache body (1341); The cache upper limit portion (1344) and the cache lower limit portion (1342) are arranged relative to each other up and down to limit the top and the bottom of the cover body cache space respectively; the cover body cache unit (134) can rotate relative to the cover body screw-in assembly (13) to switch between a cache state and a release state, and the cache upper limit portion (1344) and the cache lower limit portion (1342) protrude from the inner wall of the cover body falling channel (1323); the cache recovery component elastically acts between the cache body (1341) and the cover body screw-in assembly (13), so that after the cover body cache unit (134) releases the cached cover (14) in the release state, the cache recovery component can reset the cover body cache unit (134) to the cache state.

2. The capping device of the medicine filling machine according to claim 1, characterized in that: It also includes a mounting seat (111) fixedly mounted in a corresponding one of the rotating mounting holes (241), the filling tube (112) being rotatably mounted in the mounting seat (111) so that the docking portion (1122) is exposed from the bottom of the mounting seat (111).

3. The capping device of the medicine filling machine according to claim 1, characterized in that: The loading tube (112) is provided with a loading channel (1121) which runs through its upper and lower ends; the cover body (14) is loaded from the top of the loading channel (1121) and slides out from the bottom and finally falls 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 pile, wherein at least one cover body (14) is temporarily stored in the docking portion (1122) of the loading tube (112); when the cover body screw-in assembly (13) is in the approaching state, the loading tube (112) is inserted into the cover body falling channel (1323) and acts on the cover body (14) at the top of the cover body pile, so that the cover body pile as a whole moves downward and finally causes the cover body (14) at the bottom of the cover body pile to leave the cover body falling channel (1323).

4. The capping device of the medicine filling machine according to claim 3, characterized in that: At least three groups of cover retaining structures (115) arranged around the filling channel (1121) are provided near the bottom of the filling channel (1121), and the cover retaining structures (115) include: A straight line segment (1151) embedded in the inner wall of the filling tube (112) and rotatably connected to the filling tube (112); A bent section (1152) is fixedly connected to the bottom of the straight section (1151) and is formed with an inclination angle α extending obliquely outward, so that the bottom diameter of the filling channel (1121) gradually decreases from top to bottom; and An elastic supporting component (1153) elastically supported between the bending section (1152) and the inner side wall of the filling tube (112); The straight section (1151) is capable of rotating relative to the loading tube (112) so that the cover holding structure (115) switches between a holding state and a release state; the elastic support component (1153) is capable of elastic deformation, and when the lateral pressure from the cover (14) applied to the bent section (1152) is greater than the elastic restoring force of the elastic support component (1153), the straight section (1151) is capable of rotating relative to the loading tube (112) so as to return from the holding state to the release state.

5. The capping device of the medicine filling machine according to claim 4, characterized in that: The top end of the cover body falling channel (1323) is connected to form a downward pressing docking channel, and the downward pressing docking channel includes a straight matching section (1321) and an inclined guiding section (1322) which are sequentially connected from top to bottom, wherein the inner diameter of the straight matching section (1321) is greater than or equal to the outer diameter of the filling tube (112), and the inner diameter of the inclined guiding section (1322) is gradually reduced from top to bottom to achieve a size transition between the straight matching section (1321) and the cover body falling channel (1323).

6. The capping device of the medicine filling machine according to claim 5, characterized in that: A sealing ring is provided on the outer side of the bottom of the filling tube (112); when the filling tube (112) is inserted into the downward-pressed docking channel, the sealing ring forms a seal between the filling tube (112) and the straight-line docking section (1321).

7. The capping device of the medicine filling machine according to claim 6, characterized in that: It also includes a vacuum generator, wherein the air extraction pipeline (1325) of the vacuum generator is connected to the downward pressure docking channel.

8. The capping device of the medicine filling machine according to claim 7, characterized in that: When the cover body screw-in assembly (13) is in the approaching state, the filling tube (112) is inserted into the downward pressing docking channel and acts on the cover body (14) at the top of the cover body stack, so that the cover body stack moves downward as a whole and eventually causes the cover body (14) at the bottom of the cover body stack to leave the cover body falling channel (1323). Subsequently, when the cover body screw-in assembly (13) gradually returns to the away state under the action of the elastic reset component (123), the vacuum generator starts to evacuate the downward pressing docking channel, and the cover body (14) at the bottom of the filling channel (1121) starts to laterally compress the bending section (1152) under the action of the suction force, and eventually the lateral compressing force is greater than the restoring force of the elastic support component (1153), thereby causing the cover body (14) to slip off the filling channel (1121) and fall into the downward pressing docking channel.

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