Star-wheel positioning mechanism for labeling bottles with handles

Abstract

The present invention relates to the technical field of labeling machines, and specifically relates to a star wheel positioning mechanism for labeling bottle types with handles, which includes a bottle inlet star wheel and a central guide plate located on one side of the bottle inlet star wheel. The bottle inlet star wheel includes a bottom star wheel, an intermediate fixed disk, and a top star wheel that are arranged at intervals from bottom to top and coaxially. A fixed shaft is coaxially arranged upward on the intermediate fixed disk, and a cam portion is rotatably arranged on the fixed shaft through a bearing assembly. A clamping roller group is arranged on the tooth portion of the bottom star wheel, and a card slot portion is arranged on the intermediate fixed disk and extends upward to a position above the middle of two adjacent clamping roller groups. The central guide plate includes a bottom plate, a middle plate, and a top plate that are arranged at intervals from bottom to top. The side edges of the bottom plate, the middle plate, and the top plate that are opposite to the bottle inlet star wheel are concentric arc segments, and a friction portion is arranged between the bottom plate and the middle plate and between the endpoints of their arc segments. The overall structure is simple, which can achieve bottle body positioning and reduce the cost of customers purchasing equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of labeling machines, and particularly to a star wheel positioning mechanism for labeling bottles with handles. Background Art

[0002] Packaging bottle shapes are becoming more and more diverse and irregular. When labeling some special bottle shapes, in order to stick the label paper to the same position of the bottle, it is necessary to adjust the position and posture of the bottle. For example, when labeling a bottle with a handle, it is necessary to uniformly adjust the side opposite the handle in the bottle to face the label paper. For this, the existing patent CN215362250U provides a tracking and positioning mechanism for bottles with handles and a labeling machine including this positioning mechanism, which includes a thumb cylinder, an annular gripper, a rotating assembly, and a stop cylinder. During adjustment, the lifting of the thumb cylinder is used to control the contraction of the annular gripper, thereby realizing the grasping of the bottle head by the annular gripper. Then, the bottle body is driven to rotate by the rotating assembly until the handle of the bottle abuts against the output shaft of the stop cylinder to ensure that the positions of all bottles to be processed are the same. Then, the stop cylinder and the annular gripper are released. The adjustment process requires the cooperation of three driving structures, namely the thumb cylinder, the rotating assembly, and the stop cylinder, with a relatively complex structure and a high equipment cost. Summary of the Invention

[0003] In view of the above problems, an embodiment of the present invention provides a star wheel positioning mechanism for labeling bottles with handles.

[0004] On one hand, an embodiment of the present invention provides a star wheel positioning mechanism for labeling bottles with handles, which includes a bottle inlet star wheel and a central guide plate located on one side of the bottle inlet star wheel. The bottle inlet star wheel includes a bottom star wheel, an intermediate fixed disk, and a top star wheel that are arranged at intervals from bottom to top and coaxially. A fixed shaft is coaxially arranged upward on the intermediate fixed disk, and a cam portion is rotatably arranged on the fixed shaft through a bearing assembly. A clamping roller group is arranged on the tooth portion of the bottom star wheel, and a slot portion is extended upward on the intermediate fixed disk to a position above the middle of adjacent two clamping roller groups. The slot portion includes a slot unit that engages with the handle in the bottle with a handle to fix the bottle body. The slot unit is movably arranged on the intermediate fixed disk and can move in the radial direction of the intermediate fixed disk. A guide wheel shaft that cooperates with the cam portion is arranged on the slot unit. When the bottom star wheel, the intermediate fixed disk, and the top star wheel rotate, the cam portion remains relatively stationary, and the guide wheel shaft rolls in the cam portion and drives the slot unit to reciprocate in the radial direction of the intermediate fixed disk under the guiding action of the cam portion.

[0005] The central guide plate includes a bottom plate, a middle plate and a top plate which are arranged at intervals from bottom to top. The side edges of the bottom plate, the middle plate and the top plate opposite to the bottle inlet star wheel are concentric arc segments. A friction part is arranged between the bottom plate and the middle plate and at the endpoints of the arc segments of the two. When the bottle body enters the bottle inlet star wheel from the connection position between the bottle inlet star wheel and the central guide plate during labeling, the guide wheel shaft drives the card slot unit to gradually extend and approach the bottle body under the guiding action of the cam part. At the same time, the bottle body rubs against the friction part, and the bottle body rotates under the action of the frictional force and the clamping action of the clamping roller group, so that the handle of the bottle body is engaged and fixed with the card slot unit to position the bottle body.

[0006] Compared with the prior art, the beneficial effects of the present invention are as follows: The bottle inlet star wheel is increased with a positioning structure (card slot part, cam part, clamping roller group), and the central guide plate is increased with a non-powered driving mechanism (friction part), so that after the bottle body enters between the bottle inlet star wheel and the central guide plate, the bottle body rotates under the driving of the frictional force of the central guide plate and is engaged and positioned with the card slot unit on the bottle inlet star wheel, and the bottle body is adjusted to a unified posture; The structure is simple and the bottle body can be positioned without a power driving device, reducing the cost for customers to purchase equipment.

[0007] Optionally, the cam part includes a turntable rotatably arranged on a fixed shaft through a bearing assembly. A cam disc is coaxially arranged on the bottom surface of the turntable, and a cam-shaped guide hole is formed in the cam disc.

[0008] Optionally, the card slot part further includes two upright columns vertically arranged on the middle fixed disc. Rotating arms are horizontally rotatably arranged at the tops of the two upright columns. A connecting arm is hinged between the two rotating arms. The connecting arm is arranged radially along the middle fixed disc. The card slot unit is fixed at the outer end of the connecting arm; The guide wheel shaft penetrates through the tail end of the connecting arm, and the wheel surface of the guide wheel in the guide wheel shaft fits with the side surface of the guide hole; A first pulling column is arranged on the middle fixed disc below the outer end of the connecting arm, and a first pulling spring is arranged between the first pulling column and the bottom end of the guide wheel shaft.

[0009] Optionally, an inverted L-shaped support arm is arranged on the top surface of the turntable. The horizontal section of the support arm extends outward to the outside of the bottle inlet star wheel, and a clamping and fixing part is arranged at the outer end of the horizontal section.

[0010] Optionally, the friction part includes guide columns arranged between the bottom plate and the middle plate and opposite to each other at the endpoints of the two arc segments. Connecting columns are arranged between the bottom plate and the middle plate and on the outer sides of the two guide columns away from the bottle inlet star wheel. A friction belt is connected to the first side connecting column. The friction belt is sequentially redirected by the two guide columns and then connected to the second side connecting column.

[0011] Optionally, when the friction belt is made of a plastic material, a tension spring elastic part is arranged outside the first side connecting column between the bottom plate and the middle plate. The tension spring elastic part includes chutes oppositely arranged on the top surface of the bottom plate and the bottom surface of the middle plate. Sliders are arranged in both chutes. The first side connecting column is arranged between the two sliders. A second tying column is further arranged outside the first side connecting column between the two sliders. A third tying column is arranged outside the second tying column between the two chutes. A second tension spring is arranged between the second tying column and the third tying column. Brief Description of the Drawings

[0012] The drawings described herein are used to provide a further understanding of the present invention, form a part of this application, and do not limit the present invention. In the drawings:

[0013] Figure 1 is the general assembly drawing of a star wheel positioning mechanism for bottle labeling with a handle provided by an embodiment of the present invention;

[0014] Figure 2 is the three-dimensional structure schematic diagram of a bottle inlet star wheel provided by an embodiment of the present invention;

[0015] Figure 3 is the side sectional structure schematic diagram of a bottle inlet star wheel provided by an embodiment of the present invention;

[0016] Figure 4 is the layout structure schematic diagram of a card slot part provided by an embodiment of the present invention;

[0017] Figure 5 is the side view structure schematic diagram of a card slot part provided by an embodiment of the present invention;

[0018] Figure 6 is the top view structure schematic diagram of a card slot part provided by an embodiment of the present invention;

[0019] Figure 7 is the side sectional structure schematic diagram of a card slot part provided by an embodiment of the present invention;

[0020] Figure 8 is the structure schematic diagram of a cam disk provided by an embodiment of the present invention;

[0021] Figure 9 is the three-dimensional structure schematic diagram of a center guide plate provided by an embodiment of the present invention;

[0022] Figure 10 is the top view structure schematic diagram of a center guide plate provided by an embodiment of the present invention;

[0023] Figure 11 is the bottom view structure schematic diagram of a center guide plate provided by an embodiment of the present invention;

[0024] Figure 12 Schematic side-sectional structure diagram of a central guide plate provided by an embodiment of the present invention.

[0025] Wherein, the bottle inlet star wheel 1, the central guide plate 2, the bottom star wheel 3, the intermediate fixed disk 4, the top star wheel 5, the fixed shaft 6, the bearing assembly 7, the cam portion 8, the clamping roller group 9, the card slot portion 10, the card slot unit 11, the guide wheel shaft 12, the bottom plate 13, the middle plate 14, the top plate 15, the arc segment 16, the friction portion 17, the turntable 18, the cam disk 19, the guide hole 20, the column 21, the rotating arm 22, the connecting arm 23, the guide wheel 2�, the first pulling column 25, the first pulling spring 26, the support arm 27, the clamping and fixing portion 28, the guide column 29, the connecting column 30, the friction belt 31, the elastic portion of the pulling spring 32, the sliding groove 33, the sliding block 34, the second pulling column 35, the third pulling column 36, the second pulling spring 37, the large-diameter arc segment 38, the small-diameter arc segment 39, the connecting arc segment 40, the clamping column 41, the tensioning column 42, the tensioning screw 43, the connecting plate 44. Specific embodiments

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings. Herein, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but not to limit the present invention.

[0027] See Figures 1 - 12 , a star wheel positioning mechanism for labeling a bottle with a handle provided by an embodiment of the present invention includes a bottle inlet star wheel 1 and a central guide plate 2 located on one side of the bottle inlet star wheel 1. Specifically, see Figure 2 and Figure 3 The bottle inlet star wheel 1 includes a bottom star wheel 3, an intermediate fixed disk 4, and a top star wheel 5 that are spaced apart and coaxially arranged from bottom to top; a fixed shaft 6 is coaxially arranged upward on the intermediate fixed disk 4, and a cam portion 8 is rotatably arranged on the fixed shaft 6 through a bearing assembly 7; a clamping roller group 9 is arranged on the tooth portion of the bottom star wheel 3, and a card slot portion 10 is extended upward from the intermediate fixed disk 4 to a position above the middle of two adjacent clamping roller groups 9. The layout structure of the card slot portion 10 can be seen in Figure 4 , wherein the card slot portion 10 includes a card slot unit 11 that engages with the middle handle of the bottle with a handle to fix the bottle body. The card slot unit 11 is movably arranged with the intermediate fixed disk 4 and can move in the radial direction of the intermediate fixed disk 4. A guide wheel shaft 12 that cooperates with the cam portion 8 is arranged on the card slot unit 11; when the bottom star wheel 3, the intermediate fixed disk 4, and the top star wheel 5 rotate, the cam portion 8 remains stationary, and the guide wheel shaft 12 rolls within the cam portion 8 and drives the card slot unit 11 to reciprocate in the radial direction of the intermediate fixed disk 4 under the guiding action of the cam portion 8;

[0028] See Figure 9 , Figure 10 stageFigure 11 The center guide plate 2 includes a bottom plate 13, a middle plate 14 and a top plate 15 spaced apart from each other from bottom to top. The sides of the bottom plate 13, the middle plate 14 and the top plate 15 opposite to the bottle infeed star wheel 1 are concentric arc segments 16, wherein the radius of the arc segments 16 on the bottom plate 13 and the middle plate 14 is larger than the radius of the arc segment 16 on the top plate 15, thereby respectively adapting to the contours of the bottom, middle and bottle mouth of the flat bottle body; a friction portion 17 is provided between the bottom plate 13 and the middle plate 14 and between the end points of the arc segments 16 of the two; when labeling, when the bottle body enters the bottle infeed star wheel 1 from the connection position between the bottle infeed star wheel 1 and the center guide plate 2, the guide wheel shaft 12 drives the clamping slot unit 11 to gradually extend close to the bottle body under the guidance of the cam portion 8, and at the same time, the bottle body rubs against the friction portion 17. The bottle body rotates under the friction force and the clamping action of the clamping roller group 9, so that the handle of the bottle body is engaged and fixed with the clamping slot unit 11, thereby positioning the bottle body.

[0029] During implementation, the shape of the tooth grooves between adjacent teeth in the bottom star wheel 3 is adapted to the bottom contour of the bottle body, and the shape of the tooth grooves between adjacent teeth in the top star wheel 5 is adapted to the bottle mouth contour of the bottle body; each clamping roller group 9 may include three clamping rollers, and the three clamping rollers are arranged in a herringbone shape; the side surface of the slot unit 11 that contacts the bottle body is an overall arc surface, and a rectangular groove is vertically provided in the middle of the arc surface, and the rectangular groove is used to engage with the handle of the bottle body to position the bottle body.

[0030] The cam portion 8 includes a turntable 18 rotatably mounted on the fixed shaft 6 via a bearing assembly 7. A cam disc 19 is coaxially mounted on the bottom surface of the turntable 18. A cam-shaped guide hole 20 is formed in the cam disc 19. Figure 4 The cam plate 19 can be installed with an arc-shaped long hole on the turntable 18, so that when the cam plate 19 and the turntable 18 are fixed with screws, the position of the cam plate 19 can be adjusted to meet the actual situation that the slot unit 11 extends and then cooperates with the friction part 17 to position the bottle body; at the same time, it should be noted that Figure 4 Due to the small effect of the three-dimensional model, the small-diameter arc segment 39 blocks the guide wheel shaft 12. Please refer to the description of the guide wheel shaft 12 in which the wheel surface of the guide wheel 24 fits the side of the guide hole 20.

[0031] For specific implementation, see Figure 8 In the structure of the cam plate 19, the guide hole 20 is divided into a large-diameter arc segment 38, a small-diameter arc segment 39 and a connecting arc segment 40 that are concentrically arranged; when the guide wheel shaft 12 enters the large-diameter arc segment 38 from the small-diameter arc segment 39 through the connecting arc segment 40 in the guide hole 20, it is a process in which the guide wheel shaft 12 drives the slot unit 11 to extend outward in the radial direction of the intermediate fixed plate 4.

[0032] See also Figure 5 、 Figure 6 and Figure 7, the card slot portion 10 further includes two vertical columns 21 provided on the middle fixed disk 4. At the top of both columns 21, there are horizontally rotatably provided rotating arms 22. A connecting arm 23 is hinged between the two rotating arms 22. The connecting arm 23 is arranged radially along the middle fixed disk 4. The card slot unit 11 is fixed at the outer end of the connecting arm 13; the guide wheel shaft 12 is penetrated and arranged at the tail end of the connecting arm 13. The wheel surface of the guide wheel 24 in the guide wheel shaft 12 is attached to the side surface of the guide hole 20; below the outer end of the connecting arm 23 on the middle fixed disk 4, there is provided a first pulling column 25. A first pulling spring 26 is arranged between the first pulling column 25 and the bottom end of the guide wheel shaft 12; specifically, the shaft portion of the guide wheel shaft 12 can also be used as a hinge shaft for realizing the rotational connection between the connecting arm 23 and the rotating arm 22, reducing the structural complexity; when the guide wheel 24 contacts the small diameter arc segment 39, the first pulling spring 26 is stretched. When the guide wheel 24 enters the large diameter arc segment 38 from the small diameter arc segment 39 via the connecting arc segment 40, the first pulling spring 26 gradually resets, and the card slot unit 11 extends under the pulling force of the first pulling spring 26; specifically, when setting the first pulling column 25, the first pulling column 25 can be fixed on the connecting plate 44. The connecting plate 44 is provided with a long hole, and the connecting plate is arranged on the middle fixing plate through the long hole and screws to realize the adjustable pulling force of the first pulling spring 26.

[0033] On the top surface of the turntable 18, there is provided an L-shaped support arm 27. The horizontal section of the support arm 27 extends outward to the outside of the bottle inlet star wheel 1, and at the outer end of the horizontal section, there is provided a clamping and fixing portion 28; specifically, the clamping and fixing portion 28 may include two clamping plates. There is a clamping groove provided on the fitting surface between the two clamping plates, and the two clamping plates can be locked by screws. Continue to refer to Figure 1 , an assembling type can set a clamping column 41 on one side of the bottle inlet star wheel 1. During the working process, the clamping and fixing portion 28 clamps on the clamping column 41, so as to ensure that during the rotation of the bottom star wheel 3, the middle fixed disk 4 and the top star wheel 5, the cam portion 8 remains relatively stationary.

[0034] The friction portion 17 includes guide columns 29 that are located between the bottom plate 13 and the middle plate 14 and are oppositely arranged at the end points of the two arc segments 16. On both sides of the bottom plate 13 and the middle plate 14 and outside the two guide columns 29 away from the bottle inlet star wheel 1, there are provided connecting columns 30. A friction belt 31 is connected to the first side connecting column 30. The friction belt 31 is sequentially redirected by the two guide columns 29 and then connected to the second side connecting column 30; specifically, the above-mentioned first side connecting column 30 refers to the connecting column 30 on the side where the bottle body is introduced, and the second side connecting column 30 refers to the connecting column 30 on the side where the bottle body is exported; the friction belt 31 can be made of an elastic material, and its own elasticity is used to prevent movement interference with the bottle body when the bottle body enters and ensure the friction effect with the bottle body.

[0035] In the case where the friction belt 31 is made of a plastic material, a tension spring elastic part 32 is arranged outside the first side connecting column 30 between the bottom plate 13 and the middle plate 14. The tension spring elastic part 32 includes sliding grooves 33 oppositely arranged on the top surface of the bottom plate 13 and the bottom surface of the middle plate 14. Sliders 34 are arranged in both sliding grooves 33. The first side connecting column 30 is arranged between the two sliders 34. A second tying column 35 is further arranged outside the first side connecting column 30 between the two sliders 34. A third tying column 36 is arranged outside the second tying column 35 between the two sliding grooves 33. A second tension spring 37 is arranged between the second tying column 35 and the third tying column 36. In a specific implementation, refer to Figure 12 A slider 34 can be added to both sliding grooves 33. The third tying column 36 is arranged on the added slider 34. Tension columns 42 are arranged outside both sliding grooves 33. A threaded hole is arranged in the middle of the third tying column 36, and a through hole is arranged in the middle of the tension column 42. A tension screw 43 passes through the through hole in the tension column 42 and is screwed into the threaded hole on the third tying column 36. The tension degree of the friction belt 31 can be adjusted by adjusting the screwing degree of the tension screw 43.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.

Claims

1. A star wheel positioning mechanism for bottle labeling with a handle, comprising an inlet bottle star wheel and a central guide plate located on one side of the inlet bottle star wheel, characterized in that, The bottle inlet star wheel includes a bottom star wheel, an intermediate fixed disk, and a top star wheel that are arranged at intervals and coaxially from bottom to top; a fixed shaft is coaxially arranged upward on the intermediate fixed disk, and a cam part is rotatably arranged on the fixed shaft through a bearing assembly; a clamping roller group is arranged on the tooth part of the bottom star wheel, and a clamping groove part is arranged on the intermediate fixed disk and extends upward to a position above the middle of adjacent two clamping roller groups. The clamping groove part includes a clamping groove unit that engages with the middle handle of the bottle with a handle to fix the bottle body. The clamping groove unit is movably arranged on the intermediate fixed disk and can move in the radial direction of the intermediate fixed disk. A guide wheel shaft that cooperates with the cam part is arranged on the clamping groove unit; during the rotation of the bottom star wheel, the intermediate fixed disk, and the top star wheel, the cam part remains stationary, and the guide wheel shaft rolls in the cam part and drives the clamping groove unit to reciprocate in the radial direction of the intermediate fixed disk under the guiding action of the cam part. The center guide plate includes a bottom plate, a middle plate, and a top plate that are arranged at intervals from bottom to top. The sides of the bottom plate, the middle plate, and the top plate that are opposite to the bottle inlet star wheel are concentric arc segments. A friction part is arranged between the bottom plate and the middle plate and located between the endpoints of the two arc segments; when the bottle body enters the bottle inlet star wheel from the connection position between the bottle inlet star wheel and the center guide plate during labeling, the guide wheel shaft drives the clamping groove unit to gradually extend and approach the bottle body under the guiding action of the cam part. At the same time, the bottle body rubs against the friction part, and the bottle body rotates under the action of the frictional force and the clamping action of the clamping roller group, so that the handle of the bottle body engages and fixes with the clamping groove unit to position the bottle body. The cam part includes a turntable rotatably arranged on the fixed shaft through a bearing assembly. A cam disk is coaxially arranged on the bottom surface of the turntable. A cam-shaped guide hole is opened in the cam disk. The guide hole is divided into a large-diameter arc segment, a small-diameter arc segment, and a connecting arc segment that are concentrically arranged; when the guide wheel shaft enters the large-diameter arc segment from the small-diameter arc segment via the connecting arc segment in the guide hole, it is the process of the guide wheel shaft driving the clamping groove unit to extend outward in the radial direction of the intermediate fixed disk. The clamping groove part further includes two vertical columns arranged on the intermediate fixed disk. Rotating arms are horizontally rotatably arranged at the tops of the two vertical columns. A connecting arm is hinged between the two rotating arms. The connecting arm is arranged along the radial direction of the intermediate fixed disk. The clamping groove unit is fixed at the outer end of the connecting arm; the guide wheel shaft penetrates through the tail end of the connecting arm, and the wheel surface of the guide wheel in the guide wheel shaft fits with the side surface of the guide hole; a first pulling column is arranged on the intermediate fixed disk below the outer end of the connecting arm. A first pulling spring is arranged between the first pulling column and the bottom end of the guide wheel shaft; when the guide wheel contacts the small-diameter arc segment, the first pulling spring is stretched. When the guide wheel enters the large-diameter arc segment from the small-diameter arc segment via the connecting arc segment, the first pulling spring gradually returns to its original position, and the clamping groove unit extends under the pulling force of the first pulling spring.

2. The star wheel positioning mechanism for bottle labeling with a handle according to claim 1, characterized in that, An inverted L-shaped support arm is arranged on the top surface of the turntable. The horizontal section of the support arm extends outward to the outside of the bottle inlet star wheel, and a clamping and fixing part is arranged at the outer end of the horizontal section.

3. The star wheel positioning mechanism for bottle labeling with a handle according to claim 1, characterized in that, The friction part includes guide columns that are arranged between the bottom plate and the middle plate and are oppositely arranged at the endpoint positions of the two arc segments. Connecting columns are arranged between the bottom plate and the middle plate and on the outer sides of the two guide columns away from the bottle inlet star wheel. A friction belt is connected to the first side connecting column. The friction belt is sequentially redirected by the two guide columns and then connected to the second side connecting column.

4. The star wheel positioning mechanism for bottle labeling with a handle according to claim 3, characterized in that, When the friction belt uses a plastic material, a tension spring elastic part is arranged outside the first side connecting column between the bottom plate and the middle plate. The tension spring elastic part includes sliding grooves oppositely arranged on the top surface of the bottom plate and the bottom surface of the middle plate. Sliders are arranged in both sliding grooves. The first side connecting column is arranged between the two sliders. A second pulling column is further arranged outside the first side connecting column between the two sliders. A third pulling column is arranged outside the second pulling column between the two sliding grooves. A second tension spring is arranged between the second pulling column and the third pulling column.

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