Liquid quantity detection mechanism for labeling machine

Abstract

The utility model provides a liquid quantity detection mechanism for a labeling machine. The liquid quantity detection mechanism comprises a base, two lifting seats and an infrared detection component, wherein the base is of a structure with a hollow interior and an upward opening, and two rotating rollers are rotationally connected to the base; wherein one rotating roller is in transmission connection with a rotation driving component, and the base is further provided with a conveying belt wrapping the two rotating rollers. The two lifting seats are arranged on the left side and the right side of the conveying belt respectively, a transmission structure is arranged between one lifting seat and the rotation driving component, and a synchronous lifting structure is arranged between the two lifting seats. The infrared detection component is arranged on the base and comprises an infrared signal generation module and an infrared signal receiving module which are arranged on the two lifting seats respectively. The lifting seat can move through the transmission structure, so that the detection range of the infrared detection component is adjusted. The liquid quantity detection mechanism for the labeling machine provides a liquid quantity detection function for the labeling machine and ensures the reliability of a liquid quantity detection result.

Description

Technical Field

[0001] The present application belongs to the technical field of labeling machines, and specifically relates to a liquid volume detection mechanism for labeling machines. Background Art

[0002] Labeling machine is a device that uses adhesive as a medium to stick paper or metal foil labels on target containers. It is an indispensable part of modern packaging processes.

[0003] When a labeling machine is used to label medicine bottles, and the medicine bottles contain liquid medicine, the label usually covers most of the area of ​​the medicine bottle, resulting in the inability to accurately visually observe the amount of liquid in the medicine bottle, affecting the subsequent quality inspection process. In order to solve this problem, in the existing process steps, liquid amount detection and product labeling are usually performed simultaneously. Specifically, an infrared sensor is set in front of the medicine labeling area during the drug transmission process, and the infrared sensor is used to determine whether there is liquid in the medicine bottle.

[0004] The inventors have discovered that the existing liquid volume detection mechanism can only detect whether there is liquid medicine in the medicine bottle, but cannot detect and record the amount of liquid medicine, resulting in a technical problem of reduced reliability of liquid volume detection results. Utility Model Content

[0005] The embodiment of the present application provides a liquid volume detection mechanism for a labeling machine, aiming to provide a liquid volume detection function for the labeling machine and ensure the reliability of the liquid volume detection result.

[0006] To achieve the above purpose, the technical solution adopted in this application is:

[0007] Provided is a liquid volume detection mechanism for a labeling machine, comprising:

[0008] The base adopts a frame structure with a hollow interior, an upward opening, and extending in the front-to-back direction, and the inner side of the base has two rollers arranged in parallel in the front-to-back direction; one of the rollers is connected to a rotating driving member in a transmission manner, and the base also has a conveyor belt wrapped around the outer sides of the two rollers;

[0009] Two lifting seats are respectively arranged on the left and right sides of the conveyor belt, and are both slidably connected with the base in the up-down direction; a transmission structure is provided between one of the lifting seats and the rotating driving member, and a synchronous lifting structure is provided between the two lifting seats; and

[0010] An infrared detection component is arranged on the base, and comprises an infrared signal generating module and an infrared signal receiving module respectively arranged on the two lifting seats; the transmitting end of the infrared signal generating module faces the infrared signal receiving module, so as to detect the liquid medicine passing through the medicine bottle between the infrared signal generating module and the infrared signal receiving module;

[0011] When the rotating driving component drives the roller to rotate, the transmission structure drives the corresponding lifting seat to rise and fall, and the synchronous lifting structure drives the other lifting seat to rise and fall, so that the infrared signal generating module and the infrared signal receiving module are synchronously lifted and lowered, so as to adjust the detection area of ​​the infrared detection component along the up and down directions.

[0012] In a possible implementation, the transmission structure includes:

[0013] A driving shaft is arranged on the inner side of the base, with its axial direction parallel to the left-right direction, and one end of which penetrates through the base and extends out; the extended end of the driving shaft is eccentrically connected to a first rotating disk, and the first rotating disk has a protrusion coaxially arranged with the driving shaft; and

[0014] A transmission belt wrapped around the protrusion and the outer side of the driving end of the rotation driving member;

[0015] Wherein, the first turntable is suitable for abutting against the lower side of the lifting seat and driving the lifting seat to move upward; when the rotation driving component is started, the transmission belt moves horizontally and drives the protrusion to rotate, so that the first turntable and the driving shaft rotate and the first turntable abuts against the lower side of the lifting seat.

[0016] In a possible implementation, the roller connected to the rotation driving member passes through the base and extends out, and the rotation driving member includes a rotation motor connected to the outer side of the base through a bracket; the power output axis of the rotation motor is parallel to the left and right direction, and the power output end of the rotation motor is coaxially connected to the roller;

[0017] Wherein, the transmission belt is wrapped around the power output shaft of the rotating motor and the outer side of the driving shaft, and the bracket is arranged to avoid the transmission belt.

[0018] In a possible implementation, the inner side surface of the transmission belt has a plurality of tooth grooves spaced apart along its length direction; the protrusion and the power output shaft of the rotary motor both have a plurality of convex teeth suitable for being embedded in the tooth grooves.

[0019] In a possible implementation, the synchronous lifting structure includes:

[0020] A driven shaft is arranged on the inner side of the base, and is coaxially arranged with the driving shaft and arranged in parallel along the left-right direction; one end of the driven shaft facing away from the driving shaft passes through the base and extends out, and a second rotating disk is eccentrically connected to the extended end of the driven shaft; and

[0021] A coupling shaft, arranged between the driving shaft and the driven shaft, and having two ends detachably connected to the driving shaft and the driven shaft respectively;

[0022] Wherein, the second turntable is suitable for abutting against the lower side of the lifting seat and driving the lifting seat to move upward; the two ends of the connecting shaft are respectively connected to the driving shaft and the driven shaft, and when the driving shaft is driven by the transmission belt to rotate, the driven shaft and the second turntable rotate synchronously, and the second turntable abuts against the lower side of the lifting seat on the same side, so that the two lifting seats can be lifted and lowered synchronously.

[0023] In a possible implementation, adjacent end surfaces of the driving shaft and the driven shaft each have a slot, and both ends of the coupling shaft each have an insert block suitable for being inserted into the slot.

[0024] In a possible implementation, the inner wall of the slot has a positioning hole penetrating the outer wall of the corresponding driving shaft or the driven shaft; each of the insert blocks has an alignment hole adapted to be coaxially connected to the positioning hole, and also has a docking screw adapted to be inserted into the mutually connected alignment hole and the positioning hole;

[0025] Wherein, both ends of each of the butt screws are threadedly connected with clamping nuts, and the clamping nuts are used to abut against the outer wall of the corresponding driving shaft or the driven shaft.

[0026] In a possible implementation, each of the lifting seats has two guide rods arranged in parallel along the front-to-back direction and extending downward; the upper side surface of the base has four guide grooves suitable for the four guide rods to be inserted into one by one;

[0027] Furthermore, each of the guide rods is sleeved with a spring, and both ends of each of the springs are respectively connected to the lower side of the lifting seat and the upper side of the base;

[0028] When the transmission structure or the synchronous lifting structure drives the lifting seat to move upward, the spring is elastically stretched to pull the lifting seat to move toward the base.

[0029] In a possible implementation, the upper side of the base has four annular grooves corresponding to the four guide grooves one by one; the corresponding annular grooves are arranged around the guide grooves, and the annular grooves are suitable for the springs to be embedded, and the bottoms of the annular grooves are suitable for being connected to the springs;

[0030] When the lower side surface of the lifting seat abuts against the upper side surface of the base, the spring is in the annular groove, and the spring is in an elastically stretched state or a non-deformed state.

[0031] In a possible implementation, the liquid amount detection mechanism further includes:

[0032] The probe is fixed to the upper side of the base through a door frame and is used to detect the passage of medicine bottles.

[0033] In the embodiment of the present application, the rotating driving component can drive the roller to rotate and the conveyor belt to move horizontally, so that the medicine bottle placed on the surface of the conveyor belt moves in the front and rear direction and passes through the detection area covered by the infrared detection component; on this basis, the transmission structure can drive one of the lifting seats to move in the longitudinal direction, and under the action of the synchronous lifting structure, the two lifting seats move at the same time, thereby expanding the detection range of the liquid amount in the medicine bottle in the up and down direction.

[0034] Compared with the prior art, the liquid volume detection mechanism for a labeling machine provided in this embodiment can provide a liquid volume detection function for the labeling machine and ensure the reliability of the liquid volume detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 One of the three-dimensional structural schematic diagrams of the liquid volume detection mechanism for the labeling machine provided in the embodiment of the present application;

[0036] Figure 2 for Figure 1 A partial enlarged schematic diagram of the upper circle A;

[0037] Figure 3 The second three-dimensional structural schematic diagram of the liquid volume detection mechanism for the labeling machine provided in the embodiment of the present application;

[0038] Figure 4 This is a schematic diagram of the structure of the transmission structure and the synchronous lifting structure used in the embodiment of the present application;

[0039] Figure 5 A schematic diagram of the exploded structure of the synchronous lifting structure used in the embodiment of the present application;

[0040] Figure 6 A schematic diagram of the three-dimensional structure of the infrared detection component used in the embodiment of the present application;

[0041] Figure 7 It is a partial enlarged schematic diagram of the base and the lifting seat used in the embodiment of the present application under the explosion perspective;

[0042] Figure 8 This is a schematic diagram of the exploded structure of the base and the probe used in the embodiment of the present application;

[0043] Fig. 9 A partially enlarged schematic diagram of a base used in an embodiment of the present application;

[0044] Fig.10A schematic diagram of the three-dimensional structure of a rotating motor used in an embodiment of the present application;

[0045] Fig.11 A schematic diagram of the three-dimensional structure of the driving shaft used in the embodiment of the present application;

[0046] Explanation of the reference numerals in the accompanying drawings: 1. base; 11. roller; 12. rotating motor; 121. bracket; 13. conveyor belt; 14. guide groove; 15. annular groove; 2. lifting seat; 21. guide rod; 3. infrared detection component; 4. transmission structure; 41. driving shaft; 411. first turntable; 412. raised portion; 42. transmission belt; 421. tooth groove; 5. synchronous lifting structure; 51. driven shaft; 511. second turntable; 52. connecting shaft; 521. plug block; 5211. alignment hole; 6. docking screw; 61. clamping nut; 7. spring; 8. probe; 9. portal frame; 10. convex tooth; 20. slot; 30. positioning hole. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0048] Please also read Figures 1 to 11 The liquid volume detection mechanism for a labeling machine provided in the present application is now described. The liquid volume detection mechanism for a labeling machine provided in the present application comprises a base 1, two lifting seats 2 and an infrared detection component 3.

[0049] The base 1 adopts a frame structure with a hollow interior, an upward opening, and extends in the front-to-back direction, and the inner side of the base 1 has two rollers 11 arranged in parallel in the front-to-back direction; one of the rollers 11 is transmission-connected to a rotating driving component, and the base 1 also has a conveyor belt 13 wrapped around the outside of the two rollers 11.

[0050] In actual use, the medicine bottle is placed on the upward conveying surface of the conveyor belt 13; at the same time, the rotating driving component drives the roller 11 to rotate and the conveyor belt 13 to move horizontally, so that the medicine bottle can be transported in the front and rear directions.

[0051] The two lifting seats 2 are respectively arranged on the left and right sides of the conveyor belt 13, and are both slidably connected to the base 1 along the up and down directions; a transmission structure 4 is provided between one of the lifting seats 2 and the rotating driving member, and a synchronous lifting structure 5 is provided between the two lifting seats 2.

[0052] The infrared detection component 3 is arranged on the base 1, and includes an infrared signal generating module and an infrared signal receiving module respectively arranged on two lifting seats 2; the transmitting end of the infrared signal generating module faces the infrared signal receiving module, so as to detect the liquid medicine passing through the medicine bottle between the infrared signal generating module and the infrared signal receiving module. It should be noted that the detection area between the infrared signal generating module and the infrared signal receiving module is related to the horizontal plane height where the infrared signal generating module and the infrared signal receiving module are located; when the infrared signal generating module and the infrared signal receiving module rise, the detection area of ​​the infrared signal generating module and the infrared signal receiving module is adjusted upward; when the infrared signal generating module and the infrared signal receiving module fall, the detection area of ​​the infrared signal generating module and the infrared signal receiving module is adjusted downward.

[0053] In the embodiment of the present application, the rotating driving component can drive the roller 11 to rotate and the conveyor belt 13 to move horizontally, so that the medicine bottle placed on the surface of the conveyor belt 13 moves in the front-to-back direction and passes through the detection area covered by the infrared detection component 3; on this basis, the transmission structure 4 can drive one of the lifting seats 2 to move in the longitudinal direction, and under the action of the synchronous lifting structure 5, the two lifting seats 2 move simultaneously, thereby expanding the detection range of the liquid amount in the medicine bottle in the up and down direction.

[0054] As reflected in the data, when the medicine bottle passes through the detection area, the lifting seat 2 must complete at least two cycles of lifting; in each cycle, if the signal transmitted by the infrared detection component 3 shows that there is liquid in the medicine bottle, it means that there is sufficient liquid in the medicine bottle; and if part of the signal transmitted by the infrared detection component 3 shows that there is no liquid in the medicine bottle, it is usually caused by a low liquid level, which means that there is insufficient liquid in the medicine bottle.

[0055] Compared with the prior art, the liquid volume detection mechanism for a labeling machine provided in this embodiment can provide a liquid volume detection function for the labeling machine and ensure the reliability of the liquid volume detection result.

[0056] In some embodiments, Figure 4 As shown, the transmission structure 4 includes a driving shaft 41 and a transmission belt 42 .

[0057] The driving shaft 41 is arranged on the inner side of the base 1, with its axial direction parallel to the left-right direction, and one end thereof passes through the base 1 and extends out; the extended end of the driving shaft 41 is eccentrically connected to a first turntable 411 (that is, there is a spacing parallel to the first turntable 411 between the central axis of the first turntable 411 and the central axis of the driving shaft 41), and the first turntable 411 has a protrusion 412 coaxially arranged with the driving shaft 41.

[0058] The transmission belt 42 is wrapped around the outer side of the protrusion 412 and the driving end of the rotation driving member; specifically, in this embodiment, the rotation driving member has a driving portion parallel to the driving shaft 41, and the transmission belt 42 is wrapped around this driving portion.

[0059] In actual use, the first turntable 411 is suitable for abutting against the lower side of the lifting seat 2 and driving the lifting seat 2 to move upward; when the rotation driving component is started, the transmission belt 42 moves horizontally and drives the protrusion 412 to rotate, so that the first turntable 411 and the driving shaft 41 rotate, and the first turntable 411 abuts against the lower side of the lifting seat 2.

[0060] In some embodiments, Figure 2 As shown, the roller 11 connected to the rotating driving member passes through the base 1 and extends out, and the rotating driving member includes a rotating motor 12 connected to the outer side of the base 1 through a bracket 121; the power output axis of the rotating motor 12 is parallel to the left and right direction, and the power output end of the rotating motor 12 is coaxially connected to the roller 11.

[0061] The transmission belt 42 is wrapped around the power output shaft of the rotary motor 12 and the outer side of the driving shaft 41 , and the bracket 121 is arranged to avoid the transmission belt 42 .

[0062] In some embodiments, Figure 2 , Figure 4 , Fig.10 and Fig.11 As shown, the inner side surface of the transmission belt 42 has a plurality of tooth grooves 421 spaced apart along its length direction; the protrusion 412 and the power output shaft of the rotary motor 12 both have a plurality of convex teeth 10 suitable for being embedded in the tooth grooves 421 .

[0063] Through the meshing relationship between the ten tooth grooves 421 of the convex teeth, the stability of the transmission effect of the transmission belt 42 between the protrusion 412 and the power output shaft of the rotating motor 12 can be ensured.

[0064] In some embodiments, Figure 4 and Figure 5 As shown, the synchronous lifting structure 5 includes a driven shaft 51 and a connecting shaft 52

[0065] The driven shaft 51 is arranged on the inner side of the base 1 , and is coaxially arranged with the driving shaft 41 and arranged in parallel along the left-right direction; one end of the driven shaft 51 facing away from the driving shaft 41 passes through the base 1 and extends out, and the extended end of the driven shaft 51 is eccentrically connected to a second turntable 511 .

[0066] The connecting shaft 52 is disposed between the driving shaft 41 and the driven shaft 51 , and two ends thereof are detachably connected to the driving shaft 41 and the driven shaft 51 , respectively.

[0067] Among them, the second turntable 511 is suitable for abutting the lower side of the lifting seat 2 and driving the lifting seat 2 to move upward; it should be noted that when the driving shaft 41 and the driven shaft 51 are connected by the connecting shaft 52, the first turntable 411 and the second turntable 511 are coaxially arranged to lift the lifting seat 2 at the same time and ensure that the two lifting seats 2 are in the same horizontal plane.

[0068] By adopting the above technical solution, when the two ends of the connecting shaft 52 are respectively connected to the driving shaft 41 and the driven shaft 51, and the transmission belt 42 drives the driving shaft 41 to rotate, the driven shaft 51 and the second turntable 511 rotate synchronously, and the second turntable 511 abuts against the lower side surface of the lifting seat 2 on the same side, so that the two lifting seats 2 can be lifted and lowered synchronously.

[0069] In some embodiments, Figure 5 As shown, adjacent end surfaces of the driving shaft 41 and the driven shaft 51 are each provided with a slot 20 , and both ends of the connecting shaft 52 are provided with an inserting block 521 suitable for being inserted into the slot 20 .

[0070] Among them, the slot 20 penetrates the outer peripheral wall of the shaft body along the radial direction of the corresponding shaft body; the plug block 521 adopts a non-cylindrical structure, so that after the plug block 521 is inserted into the slot 20, the outer wall of the plug block 521 can be connected with the inner wall of the slot 20, so that the driving shaft 41 and the driven shaft 51 cannot rotate relative to each other, and after one of them rotates, the other shaft body rotates synchronously.

[0071] In some embodiments, Figure 5 As shown, the inner wall of the slot 20 has a positioning hole 30 that passes through the outer wall of the corresponding active shaft 41 or driven shaft 51; each plug block 521 has an alignment hole 5211 that is coaxially connected to the positioning hole 30, and also has a docking screw 6 that is suitable for being inserted into the mutually connected alignment hole 5211 and the positioning hole 30; wherein, both ends of each docking screw 6 are threadedly connected with a clamping nut 61, and the clamping nut 61 is used to abut the outer wall of the corresponding active shaft 41 or driven shaft 51 to limit the separation of the plug block 521 and the slot 20.

[0072] In some embodiments, Figure 7 and Fig. 9 As shown, each lifting seat 2 has two guide rods 21 arranged in parallel along the front-to-back direction and extending downward; the upper side surface of the base 1 has four guide grooves 14 suitable for the four guide rods 21 to be inserted one by one.

[0073] Furthermore, a spring 7 is sleeved on each guide rod 21, and both ends of each spring 7 are connected to the lower side of the lifting seat 2 and the upper side of the base 1 respectively;

[0074] When the transmission structure 4 or the synchronous lifting structure 5 drives the lifting seat 2 to move upward, the spring 7 is elastically stretched to pull the lifting seat 2 toward the base 1, thereby ensuring that the lifting seat 2 can fall back to its original position stably and quickly.

[0075] In some embodiments, Figure 7 and Fig. 9 As shown, the upper side of the base 1 has four annular grooves 15 corresponding to the four guide grooves 14 one by one; the corresponding annular grooves 15 are arranged around the guide grooves 14, and the annular grooves 15 are suitable for the spring 7 to be embedded, and the groove bottom of the annular groove 15 is suitable for connecting with the spring 7;

[0076] When the lower side of the lifting seat 2 abuts against the upper side of the base 1 , the spring 7 is in the annular groove 15 , and the spring 7 is in an elastically stretched state or a non-deformed state.

[0077] By adopting the above technical solution, the lower side of the lifting seat 2 can abut against the upper side of the base 1, so that the adjustment of the lifting seat 2 is more stable.

[0078] In some embodiments, Figure 1 and Figure 3 As shown, the liquid volume detection mechanism also includes a probe 8, which is fixed to the upper side of the base 1 through a door frame 9. The probe 8 is located directly above (or at the entrance) the detection area formed by the infrared detection component 3, and is used to detect the passage of the medicine bottle.

[0079] By adopting the above technical solution, the infrared detection component 3 and the probe 8 work together to achieve the following technical solution: when collecting data, the probe 8 can accurately record when the medicine bottle enters and exits the detection area, and at the same time compare the detection results of the infrared detection component 3 in this process to accurately determine whether the liquid volume of each medicine bottle is compliant.

[0080] The above content is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A liquid volume detection mechanism for a labeling machine, characterized in that: include: The base adopts a frame structure with a hollow interior, an upward opening, and extending in the front-to-back direction, and the inner side of the base has two rotating rollers arranged in parallel in the front-to-back direction; One of the rollers is connected to a rotating driving member, and the base is provided with a conveyor belt wrapped around the outside of the two rollers; Two lifting seats are respectively arranged on the left and right sides of the conveyor belt, and are both slidably connected with the base in the up-down direction; a transmission structure is provided between one of the lifting seats and the rotating driving member, and a synchronous lifting structure is provided between the two lifting seats; as well as An infrared detection component is arranged on the base, and comprises an infrared signal generating module and an infrared signal receiving module respectively arranged on the two lifting seats; The transmitting end of the infrared signal generating module faces the infrared signal receiving module, so as to detect the liquid medicine passing through the medicine bottle between the infrared signal generating module and the infrared signal receiving module; When the rotating driving component drives the roller to rotate, the transmission structure drives the corresponding lifting seat to rise and fall, and the synchronous lifting structure drives the other lifting seat to rise and fall, so that the infrared signal generating module and the infrared signal receiving module are synchronously lifted and lowered, so as to adjust the detection area of ​​the infrared detection component along the up and down directions.

2. The liquid volume detection mechanism for a labeling machine according to claim 1, characterized in that: The transmission structure comprises: A driving shaft is arranged on the inner side of the base, with its axial direction parallel to the left-right direction, and one end of which penetrates through the base and extends out; the extended end of the driving shaft is eccentrically connected to a first rotating disk, and the first rotating disk has a protrusion coaxially arranged with the driving shaft; and A transmission belt wrapped around the protrusion and the outer side of the driving end of the rotation driving member; Wherein, the first turntable is suitable for abutting against the lower side of the lifting seat and driving the lifting seat to move upward; when the rotation driving component is started, the transmission belt moves horizontally and drives the protrusion to rotate, so that the first turntable and the driving shaft rotate and the first turntable abuts against the lower side of the lifting seat.

3. The liquid volume detection mechanism for a labeling machine according to claim 2, characterized in that: The rotating roller connected to the rotating driving member penetrates the base and extends out, and the rotating driving member includes a rotating motor connected to the outer side of the base through a bracket; the power output axis of the rotating motor is parallel to the left and right direction, and the power output end of the rotating motor is coaxially connected to the rotating roller; Wherein, the transmission belt is wrapped around the power output shaft of the rotating motor and the outer side of the driving shaft, and the bracket is arranged to avoid the transmission belt.

4. The liquid amount detection mechanism for a labeling machine according to claim 3, characterized in that: The inner side surface of the transmission belt has a plurality of tooth grooves arranged at intervals along the length direction thereof; the protruding portion and the power output shaft of the rotating motor both have a plurality of convex teeth suitable for being embedded in the tooth grooves.

5. The liquid volume detection mechanism for a labeling machine according to claim 2, characterized in that: The synchronous lifting structure comprises: A driven shaft is arranged on the inner side of the base, and is coaxially arranged with the driving shaft and arranged in parallel along the left-right direction; one end of the driven shaft facing away from the driving shaft passes through the base and extends out, and a second rotating disk is eccentrically connected to the extended end of the driven shaft; and A coupling shaft, arranged between the driving shaft and the driven shaft, and having two ends detachably connected to the driving shaft and the driven shaft respectively; Wherein, the second turntable is suitable for abutting against the lower side of the lifting seat and driving the lifting seat to move upward; the two ends of the connecting shaft are respectively connected to the driving shaft and the driven shaft, and when the driving shaft is driven by the transmission belt to rotate, the driven shaft and the second turntable rotate synchronously, and the second turntable abuts against the lower side of the lifting seat on the same side, so that the two lifting seats can be lifted and lowered synchronously.

6. The liquid amount detection mechanism for a labeling machine according to claim 5, characterized in that: The adjacent end surfaces of the driving shaft and the driven shaft are each provided with a slot, and both ends of the coupling shaft are provided with an inserting block suitable for being inserted into the slot.

7. The liquid volume detection mechanism for a labeling machine according to claim 6, characterized in that: The inner wall of the slot is provided with a positioning hole penetrating through the outer wall of the corresponding driving shaft or the driven shaft; each of the insert blocks is provided with a positioning hole coaxially connected to the positioning hole, and also provided with a docking screw adapted to be inserted into the mutually connected positioning hole and the positioning hole; Wherein, both ends of each of the butt screws are threadedly connected with clamping nuts, and the clamping nuts are used to abut against the outer wall of the corresponding driving shaft or the driven shaft.

8. The liquid volume detection mechanism for a labeling machine according to claim 1, characterized in that: Each of the lifting seats has two guide rods arranged in parallel along the front-to-back direction and extending downward; the upper side of the base has four guide grooves suitable for the four guide rods to be inserted one by one; Furthermore, each of the guide rods is sleeved with a spring, and both ends of each of the springs are respectively connected to the lower side of the lifting seat and the upper side of the base; When the transmission structure or the synchronous lifting structure drives the lifting seat to move upward, the spring is elastically stretched to pull the lifting seat to move toward the base.

9. The liquid amount detection mechanism for a labeling machine according to claim 8, characterized in that: The upper side of the base has four annular grooves corresponding to the four guide grooves one by one; the corresponding annular grooves are arranged around the guide grooves, and the annular grooves are suitable for the springs to be embedded, and the bottoms of the annular grooves are suitable for being connected to the springs; When the lower side surface of the lifting seat abuts against the upper side surface of the base, the spring is in the annular groove, and the spring is in an elastically stretched state or a non-deformed state.

10. The liquid volume detection mechanism for a labeling machine according to any one of claims 1 to 9, characterized in that: The liquid amount detection mechanism also includes: The probe is fixed to the upper side of the base through a door frame and is used to detect the passage of medicine bottles.

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