Linear rotary labeler bottle entry screw

Abstract

The utility model relates to a labeler technical field discloses a linear type carousel labeler bottle screw structure, including spiral connecting plate, spiral connecting plate both sides wall is fixedly connected with spiral rear support and transmission mounting plate respectively, the spiral rear support and transmission mounting plate between rely on the upper front end place rotationally connected with bottle screw rod, bottle screw rod one end penetrates spiral rear support and reaches the other side of spiral rear support, and the end part fixedly connected with spiral rear axle, in the utility model, through the equipment fixed in the chain channel part rear end of existing labeler entrance star wheel part entrance, through the precision small universal joint standard telescopic type connection servo motor, drives bottle screw rod to rotate, and the spiral part extrudes the bottle body between the spiral inside and the chain channel part front inner wall, and the equidistance setting of spiral is convenient for the equidistance adjustment of bottle body on the chain channel part, is convenient for guaranteeing the consistency of bottle spacing, prevents the collision or the empty position of causing star wheel bottle feeding.

Description

Technical Field

[0001] This utility model relates to the field of labeling machine technology, and in particular to a bottle-feeding spiral structure for a linear rotary labeling machine. Background Technology

[0002] A labeling machine is an automated device mainly used to affix labels to specified packaging containers or products. A bottle labeling machine is a specialized automated device for labeling various bottles and is widely used in the food, beverage, pharmaceutical, and daily chemical industries. Currently, when a labeling machine is connected to a production line, bottles are conveyed to the labeling machine's chain conveyor via a conveyor line. The labeling machine's chain conveyor then passes through a bottle rejection module to remove inverted bottles. Upright bottles continue to be conveyed forward to the upright bottle transition area to stabilize their posture before being conveyed to the inlet star wheel. The inlet star wheel then conveys the bottles to the central turntable.

[0003] There are still some problems in the use of existing upright bottle transition areas. The current upright bottle transition area uses V-grooves or positioning blocks to fix the bottle body, and pneumatic or mechanical centering rods to ensure that the bottle is centered. At the same time, synchronous sensors detect whether the bottle is in place. The synchronous sensors only detect whether the bottle is in place and cannot guarantee the consistency of the bottle spacing. This can easily lead to collisions or gaps when the star wheel enters the bottle. Therefore, those skilled in the art have provided a linear rotary labeling machine with a bottle-feeding spiral structure to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a linear rotary labeling machine with a bottle-feeding spiral structure. This structure is achieved by fixing the device to the rear end of the chain track at the inlet star wheel of an existing labeling machine. A servo motor is connected via a precision miniature universal joint to drive the bottle-feeding spiral rod to rotate. The spiral section presses the bottle body between the spiral's interior and the inner wall of the chain track. The equidistant arrangement of the spiral facilitates the equal-distance adjustment of the bottle bodies onto the chain track, ensuring consistent bottle spacing and preventing collisions or gaps during star wheel bottle feeding.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bottle-feeding spiral structure for a linear rotary labeling machine, comprising a spiral connecting plate, a spiral rear support and a transmission mounting plate respectively fixedly connected to the two side walls of the spiral connecting plate, a bottle-feeding spiral rod rotatably connected to the upper front end of the spiral rear support and the transmission mounting plate, one end of the bottle-feeding spiral rod passing through the spiral rear support to the other side of the spiral rear support, and a spiral rear shaft fixedly connected to the end of the spiral rod, the other end of the bottle-feeding spiral rod passing through one side wall of the transmission mounting plate to the other side of the transmission mounting plate, and a spiral power shaft fixedly connected to the end of the spiral power shaft, a second synchronous wheel fixedly connected to the outside of the spiral power shaft, a tension wheel shaft fixedly connected to one side wall of the transmission mounting plate at the rear end of the second synchronous wheel, and a first synchronous wheel rotatably connected to the outside of the tension wheel shaft;

[0006] A first power output shaft is rotatably connected to one side wall of the transmission mounting plate at the lower end of the tension wheel shaft. A third synchronous pulley is fixedly connected to the outside of the first power output shaft. A transition shaft is fixedly connected to one side wall of the transmission mounting plate at the lower end of the spiral power shaft. A first bearing is fixedly sleeved on the outside of the transition shaft. A first synchronous belt is sleeved on the outside of the first synchronous pulley, the second synchronous pulley, and the third synchronous pulley, and the outer wall of the first synchronous belt is attached to the outer wall of the first bearing.

[0007] Through the above technical solution, the first power output shaft rotates, thereby driving the third synchronous pulley to rotate. The first synchronous belt drives the first synchronous pulley and the second synchronous pulley to rotate synchronously. The second synchronous pulley then drives the bottle-feeding screw rod to rotate. The spiral part of the bottle-feeding screw rod squeezes the bottle body between the inside of the screw and the inner wall of the chain section. The equidistant arrangement of the screw makes it easy to adjust the bottle body equidistantly on the chain section, which helps to ensure the consistency of the bottle spacing and prevents collisions or gaps when the star wheel feeds the bottle.

[0008] Furthermore, a gearbox is fixedly connected to one side wall of the transmission mounting plate at the lower end of the spiral connecting plate. A first power output shaft is provided at the center of the lower end of the gearbox. A power input shaft body is fixedly connected to the standard telescopic output end of the precision mini universal joint. The upper end of the power input shaft body passes through the lower end face of the gearbox and extends into the inside of the gearbox. A second bearing is fixedly sleeved at the end. Both the outer ring of the second bearing and the end of the power input shaft body are provided with power input shaft seats. The two power input shaft seats are respectively fixedly connected to the lower inner wall and the upper inner wall of the gearbox.

[0009] The above technical solution transmits power to the inside of the gearbox through a precision miniature universal joint standard telescopic type.

[0010] Furthermore, a spacer is fitted on the outer wall of the power input shaft body inside the gearbox, and a first bevel gear is fixedly fitted on the end of the power input shaft body above the spacer. A second bevel gear that meshes with the first bevel gear is rotatably connected to the lower side of the first bevel gear near the transmission mounting plate. A second power output shaft is fixedly fitted inside the second bevel gear. The second power output shaft passes through the gearbox and the transmission mounting plate in sequence and extends to one side wall of the transmission mounting plate, and its end is fixedly connected to the first power output shaft.

[0011] Through the above technical solution, power is transmitted to the first power output shaft through the meshing of the first bevel gear and the second bevel gear.

[0012] Furthermore, two third bearings are fixedly sleeved on the outer wall of the second power output shaft, and bearing seats are fixedly connected to the outer side of the two third bearings;

[0013] The above technical solution facilitates the provision of relatively stable support for the second power output shaft.

[0014] Furthermore, a longitudinal adjusting block is fixedly connected to the center of the lower end face of the spiral connecting plate, and vertical sliding shafts are provided on both sides of the center of the front end face of the longitudinal adjusting block. The rear ends of the two vertical sliding shafts pass through the longitudinal adjusting block to the rear end of the longitudinal adjusting block, and a first connecting plate is fixedly connected to the end. A fixing plate is fixedly sleeved on the outside of the two vertical sliding shafts at the front end of the spiral connecting plate.

[0015] The above technical solution allows for the adjustment of the position of the spiral connecting plate and the bottle-feeding spiral rod by sliding the longitudinal adjusting block at the upper end of the two vertical sliding shafts.

[0016] Furthermore, a pad is fixedly connected at the center of the rear end face of the first connecting plate, a position display is fixedly connected to one side of the rear end face of the pad, and a handwheel is rotatably connected at the center of the rear end face of the pad. The rotating shaft of the handwheel passes through the pad and the first connecting plate to the front end of the first connecting plate, and a lead screw is fixedly connected to its end. The lead screw thread passes through the longitudinal adjusting block to the front end of the longitudinal adjusting block.

[0017] With the above technical solution, by rotating the handwheel, the handwheel drives the lead screw to rotate, and the lead screw drives the longitudinal adjustment block to move back and forth along the two vertical sliding shafts. The longitudinal adjustment block drives the spiral connecting plate to move back and forth, thereby driving the bottle-feeding spiral rod to move inside the chain section, which makes it easy to adjust the distance according to the size of the bottle.

[0018] Furthermore, a protective cover is fixedly connected to the end face of the transmission mounting plate away from the spiral connecting plate near the edge;

[0019] The above technical solution uses a protective cover to prevent the transmission parts from being affected by external factors.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the device is fixed at the rear end of the chain section of the inlet star wheel section of the existing labeling machine. A servo motor is connected by a precision small universal joint standard telescopic type to drive the bottle-feeding screw to rotate. The screw section squeezes the bottle body between the inside of the screw and the front inner wall of the chain section. The equidistant setting of the screw makes it easy to adjust the bottle body equidistantly on the chain section, which helps to ensure the consistency of the bottle spacing and prevents collisions or gaps when the star wheel feeds the bottle. Attached Figure Description

[0022] Figure 1 This is a side sectional view of the bottle-feeding spiral structure of a linear rotary labeling machine proposed in this utility model;

[0023] Figure 2 This is a partial rear sectional view of the bottle-feeding spiral structure of a linear rotary labeling machine proposed in this utility model;

[0024] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0025] Legend:

[0026] 1. Handwheel; 2. Position indicator; 3. Pad block; 4. First connecting plate; 5. Transmission mounting plate; 6. First synchronous belt; 7. First synchronous pulley; 8. Tensioner shaft; 9. Second synchronous pulley; 10. Helical power shaft; 11. First bearing; 12. Transition shaft; 13. Vertical sliding shaft; 14. Fixing plate; 15. Third synchronous pulley; 16. First power output shaft; 17. Precision miniature universal joint standard telescopic type; 18. Helical rear bracket; 19. Helical rear shaft; 20. Helical connecting plate; 21. Bottle inlet screw rod; 22. Longitudinal adjusting block; 23. Lead screw; 24. Gearbox; 25. First bevel gear; 26. Spacer; 27. Power input shaft seat; 28. Second bearing; 29. ​​Power input shaft body; 30. Second bevel gear; 31. Second power output shaft; 32. Third bearing; 33. Protective cover. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figure 1-3This utility model provides an embodiment of a linear rotary labeling machine with a bottle-feeding spiral structure, including a spiral connecting plate 20. A spiral rear support 18 and a transmission mounting plate 5 are fixedly connected to the two side walls of the spiral connecting plate 20, respectively. A bottle-feeding spiral rod 21 is rotatably connected between the spiral rear support 18 and the transmission mounting plate 5 at the upper front end. One end of the bottle-feeding spiral rod 21 passes through the spiral rear support 18 to the other side of the spiral rear support 18, and a spiral rear shaft 19 is fixedly connected to the end of the spiral rod 21. The other end of the bottle-feeding spiral rod 21 passes through one side wall of the transmission mounting plate 5 to the other side of the transmission mounting plate 5, and a spiral power shaft 10 is fixedly connected to the end of the spiral power shaft 10. A second synchronous wheel 9 is fixedly connected to the outside of the spiral power shaft 10. A tension wheel shaft 8 is fixedly connected to one side wall of the transmission mounting plate 5 at the rear end of the second synchronous wheel 9. A first synchronous wheel 7 is rotatably connected to the outside of the tension wheel shaft 8.

[0029] A first power output shaft 16 is rotatably connected to one side wall of the transmission mounting plate 5 at the lower end of the tension wheel shaft 8. A third synchronous wheel 15 is fixedly connected to the outside of the first power output shaft 16. A transition shaft 12 is fixedly connected to one side wall of the transmission mounting plate 5 at the lower end of the spiral power shaft 10. A first bearing 11 is fixedly sleeved on the outside of the transition shaft 12. A first synchronous belt 6 is sleeved on the outside of the first synchronous wheel 7, the second synchronous wheel 9, and the third synchronous wheel 15, and the outer wall of the first synchronous belt 6 is attached to the outer wall of the first bearing 11. When the first power output shaft 16 rotates, it drives the third synchronous wheel 15 to rotate. The first synchronous belt 6 drives the first synchronous wheel 7 and the second synchronous wheel 9 to rotate synchronously. The second synchronous wheel 9 then drives the bottle-feeding spiral rod 21 to rotate. The spiral part of the bottle-feeding spiral rod 21 squeezes the bottle body between the spiral inside and the front inner wall of the chain section. The equidistant arrangement of the spiral makes it easy to adjust the bottle body equidistantly on the chain section, which helps to ensure the consistency of the bottle spacing and prevents collisions or gaps when the star wheel feeds the bottle.

[0030] A gearbox 24 is fixedly connected to one side wall of the transmission mounting plate 5 at the lower end of the spiral connecting plate 20. A first power output shaft 16 is provided at the lower center of the gearbox 24 near one side. A power input shaft body 29 is fixedly connected to the output end of a precision mini universal joint standard telescopic type 17. The upper end of the power input shaft body 29 passes through the lower end face of the gearbox 24 and extends into the interior of the gearbox 24. A second bearing 28 is fixedly sleeved at the end. Both the outer ring of the second bearing 28 and the end of the power input shaft body 29 are provided with power input shaft seats 27. The two power input shaft seats 27 are fixedly connected to the lower inner wall and the upper inner wall of the gearbox 24, respectively. Power is transmitted to the interior of the gearbox 24 through the precision mini universal joint standard telescopic type 17.

[0031] A spacer 26 is fitted on the outer wall of the power input shaft body 29 inside the gearbox 24. A first bevel gear 25 is fixedly fitted on the end of the power input shaft body 29 above the spacer 26. A second bevel gear 30 is rotatably connected to the lower side of the first bevel gear 25 near the transmission mounting plate 5, and meshes with the first bevel gear 25. A second power output shaft 31 is fixedly fitted inside the second bevel gear 30. The second power output shaft 31 passes through the gearbox 24 and the transmission mounting plate 5 in sequence and extends to one side wall of the transmission mounting plate 5. Its end is fixedly connected to the first power output shaft 16. Power is transmitted to the first power output shaft 16 through the meshing of the first bevel gear 25 and the second bevel gear 30.

[0032] Two third bearings 32 are fixedly sleeved on the outer wall of the second power output shaft 31. Bearing seats are fixedly connected to the outer side of the two third bearings 32 to provide relatively stable support for the second power output shaft 31.

[0033] A longitudinal adjusting block 22 is fixedly connected to the center of the lower end face of the spiral connecting plate 20. Vertical sliding shafts 13 are provided on both sides of the center of the front end face of the longitudinal adjusting block 22. The rear ends of the two vertical sliding shafts 13 pass through the longitudinal adjusting block 22 and are connected to the rear end of the longitudinal adjusting block 22. A first connecting plate 4 is fixedly connected to the end of the vertical sliding shafts 13 at the front end of the spiral connecting plate 20. A fixing plate 14 is fixedly sleeved on the outside of the two vertical sliding shafts 13 at the front end of the spiral connecting plate 20. The position of the spiral connecting plate 20 and the bottle-feeding spiral rod 21 is adjusted by the longitudinal adjusting block 22 sliding on the upper end of the two vertical sliding shafts 13.

[0034] A pad 3 is fixedly connected at the center of the rear end face of the first connecting plate 4. A position indicator 2 is fixedly connected to one side of the rear end face of the pad 3. A handwheel 1 is rotatably connected at the center of the rear end face of the pad 3. The rotating shaft of the handwheel 1 passes through the pad 3 and the first connecting plate 4 to the front end of the first connecting plate 4, and a lead screw 23 is fixedly connected to the end of the handwheel 1. The lead screw 23 is threaded through the longitudinal adjusting block 22 to the front end of the longitudinal adjusting block 22. By rotating the handwheel 1, the handwheel 1 drives the lead screw 23 to rotate. The lead screw 23 drives the longitudinal adjusting block 22 to move back and forth along the two vertical sliding shafts 13. The longitudinal adjusting block 22 drives the spiral connecting plate 20 to move back and forth, thereby driving the bottle-entry spiral rod 21 to move inside the chain section, which is convenient for adjusting the distance according to the size of the bottle.

[0035] A protective cover 33 is fixedly connected to the edge of the end face of the transmission mounting plate 5 away from the spiral connecting plate 20. The protective cover 33 prevents the transmission parts from being affected by the outside world.

[0036] Working principle: By fixing the device to the rear end of the chain track section at the entrance star wheel section of the existing labeling machine, a servo motor is connected through a precision small universal joint standard telescopic type 17. By rotating the handwheel 1, the handwheel 1 drives the lead screw 23 to rotate. The lead screw 23 drives the longitudinal adjustment block 22 to move back and forth along the two vertical sliding shafts 13. The longitudinal adjustment block 22 drives the spiral connecting plate 20 to move back and forth, thereby driving the bottle inlet spiral rod 21 to move inside the chain track section, which makes it easy to adjust the distance according to the size of the bottle.

[0037] A servo motor drives the precision miniature universal joint standard telescopic type 17 to rotate. The setting of the precision miniature universal joint standard telescopic type 17 facilitates the provision of rotational power as the position of the spiral connecting plate 20 moves. Axial displacement compensation is achieved through the spline pair, and the raceway and bearing structure ensure angular adaptability. Synchronous design and cage positioning maintain transmission continuity, ultimately enabling stable power transmission under complex working conditions. Its essence is a combination of geometric constraints and kinematic compensation design, which is a commonly used technical means in existing telescopic universal joint technology, and will not be elaborated on further here.

[0038] The power input shaft 29 is rotated by a precision miniature universal joint standard telescopic type 17. The power input shaft 29 drives the first bevel gear 25 to rotate. The first bevel gear 25 drives the second bevel gear 30, which meshes with it, to rotate. The second bevel gear 30 then drives the second power output shaft 31 to rotate. The second power output shaft 31 drives the first power output shaft 16 to rotate, thereby driving the third synchronous pulley 15 to rotate. The first synchronous belt 6 drives the first synchronous pulley 7 and the second synchronous pulley 9 to rotate synchronously. The second synchronous pulley 9 then drives the bottle-feeding screw rod 21 to rotate. The spiral part of the bottle-feeding screw rod 21 squeezes the bottle body between the inside of the screw and the front inner wall of the chain section. The equidistant arrangement of the spiral makes it easy to adjust the bottle body equidistantly on the chain section, which helps to ensure the consistency of the bottle spacing and prevents collisions or gaps when the star wheel feeds the bottle.

[0039] Connect the labeling machine to the production line. Bottles are conveyed to the labeling machine's chain conveyor via a conveyor line. The labeling machine's chain conveyor passes the bottle-removal module to remove inverted bottles. The upright bottles continue to be conveyed forward to the spiral, which divides the bottles into equal intervals and conveys them to the inlet star wheel. The inlet star wheel conveys the bottles to the central turntable, which then conveys them to the bottle-rubbing and labeling section for labeling. Once the bottles are in the bottle-rubbing and labeling section, sensors detect the bottles, and the high-speed labeling station dispenses the label. The bottle-rubbing belt drives the bottles to rotate and compact the label. After the label is compacted, the bottles continue to be conveyed by the central turntable to the outlet star wheel. The outlet star wheel conveys the bottles to the outlet chain conveyor, which then conveys the bottles to the next process. This is a commonly used technique in existing labeling machine technology and will not be elaborated on further here.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A linear rotary labeling machine with a bottle-feeding spiral structure, comprising a spiral connecting plate (20), characterized in that: The spiral connecting plate (20) has a spiral rear bracket (18) and a transmission mounting plate (5) fixedly connected to its two side walls respectively. A bottle-inlet spiral rod (21) is rotatably connected between the spiral rear bracket (18) and the transmission mounting plate (5) at the upper front end. One end of the bottle-inlet spiral rod (21) passes through the spiral rear bracket (18) and extends to the other side of the spiral rear bracket (18), and a spiral rear shaft (19) is fixedly connected to its end. The other end of the bottle-inlet spiral rod (21) passes through one side wall of the transmission mounting plate (5) and extends to the other side of the transmission mounting plate (5), and a spiral power shaft (10) is fixedly connected to its end. A second synchronous wheel (9) is fixedly connected to the outside of the spiral power shaft (10). A tension wheel shaft (8) is fixedly connected to one side wall of the transmission mounting plate (5) at the rear end of the second synchronous wheel (9). A first synchronous wheel (7) is rotatably connected to the outside of the tension wheel shaft (8). A first power output shaft (16) is rotatably connected to one side wall of the transmission mounting plate (5) at the lower end of the tension wheel shaft (8). A third synchronous wheel (15) is fixedly connected to the outside of the first power output shaft (16). A transition shaft (12) is fixedly connected to one side wall of the transmission mounting plate (5) at the lower end of the spiral power shaft (10). A first bearing (11) is fixedly sleeved on the outside of the transition shaft (12). A first synchronous belt (6) is sleeved on the outside of the first synchronous wheel (7), the second synchronous wheel (9) and the third synchronous wheel (15), and the outer wall of the first synchronous belt (6) is attached to the outer wall of the first bearing (11).

2. The bottle-feeding spiral structure of a linear rotary labeling machine according to claim 1, characterized in that: A gearbox (24) is fixedly connected to one side wall of the transmission mounting plate (5) at the lower end of the spiral connecting plate (20). A first power output shaft (16) is provided at the center of the lower end of the gearbox (24) on one side. A precision small universal joint standard telescopic type (17) is provided at the lower end of the gearbox (24). A power input shaft body (29) is fixedly connected to the output end of the precision small universal joint standard telescopic type (17). The upper end of the power input shaft body (29) passes through the lower end face of the gearbox (24) and extends into the inside of the gearbox (24). A second bearing (28) is fixedly sleeved at the end. A power input shaft seat (27) is provided at the outer ring of the second bearing (28) and at the end of the power input shaft body (29). The two power input shaft seats (27) are fixedly connected to the lower inner wall and the upper inner wall of the gearbox (24), respectively.

3. The bottle-feeding spiral structure of a linear rotary labeling machine according to claim 2, characterized in that: A spacer (26) is fitted on the outer wall of the power input shaft body (29) inside the gearbox (24). A first bevel gear (25) is fixedly fitted on the end of the power input shaft body (29) above the spacer (26). A second bevel gear (30) that meshes with the first bevel gear (25) is rotatably connected to the lower side of the first bevel gear (25) near the transmission mounting plate (5). A second power output shaft (31) is fixedly fitted inside the second bevel gear (30). The second power output shaft (31) passes through the gearbox (24) and the transmission mounting plate (5) in sequence and extends to one side wall of the transmission mounting plate (5), and its end is fixedly connected to the first power output shaft (16).

4. The bottle-feeding spiral structure of a linear rotary labeling machine according to claim 3, characterized in that: Two third bearings (32) are fixedly sleeved on the outer wall of the second power output shaft (31), and bearing seats are fixedly connected to the outer side of the two third bearings (32).

5. The bottle-feeding spiral structure of a linear rotary labeling machine according to claim 1, characterized in that: A longitudinal adjusting block (22) is fixedly connected at the center of the lower end face of the spiral connecting plate (20). Vertical sliding shafts (13) are provided on both sides of the center of the front end face of the longitudinal adjusting block (22). The rear ends of the two vertical sliding shafts (13) pass through the longitudinal adjusting block (22) and extend to the rear end of the longitudinal adjusting block (22). A first connecting plate (4) is fixedly connected to the end of each shaft. A fixing plate (14) is fixedly sleeved on the outside of the two vertical sliding shafts (13) at the front end of the spiral connecting plate (20).

6. The bottle-feeding spiral structure of a linear rotary labeling machine according to claim 5, characterized in that: A pad (3) is fixedly connected at the center of the rear end face of the first connecting plate (4). A position display (2) is fixedly connected to one side of the rear end face of the pad (3). A handwheel (1) is rotatably connected at the center of the rear end face of the pad (3). The shaft of the handwheel (1) passes through the pad (3) and the first connecting plate (4) to the front end of the first connecting plate (4), and a screw (23) is fixedly connected to the end of the handwheel (1). The screw (23) is threaded through the longitudinal adjusting block (22) to the front end of the longitudinal adjusting block (22).

7. The bottle-feeding spiral structure of a linear rotary labeling machine according to claim 1, characterized in that: A protective cover (33) is fixedly connected to the edge of one end face of the transmission mounting plate (5) away from the spiral connecting plate (20).

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