Labeling machine shrinking device for bottle body and labeling system

Abstract

The invention discloses a labeling machine shrinking device for bottle bodies and a labeling system, and relates to the technical field of packaging bottle production, the labeling machine shrinking device comprises a shrinking assembly and a conveying assembly, and the conveying assembly comprises a leaf chain used for performing circulating reciprocating motion on the shrinking assembly; the contraction assembly comprises a second frame arranged at the plate chain, two sets of steam pipelines arranged in parallel are arranged in the second frame, the steam pipelines are obliquely arranged in the advancing direction of the bottle bodies, and air outlets are formed in the inner sides of the two steam pipelines; and the area between the two steam pipelines forms a walking channel for enabling the label to gradually shrink from bottom to top. The two sets of steam pipelines arranged in parallel are obliquely arranged in the advancing direction of the bottle body and matched with the air outlets in the inner side to form a bottom-to-top hot air flow channel, a label is evenly heated and gradually shrunk, and label deformation or damage caused by local overheating is effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of packaging bottle production, in particular to a shrinkage device of a labeling machine for a bottle body and a labeling system. BACKGROUND

[0002] The labeling equipment in the prior art is a packaging machine for sleeving a shrink film label on a bottle or other container. The labeling machine generally comprises a labeling assembly, a shrinkage assembly, and a conveying assembly for conveying the bottle from the labeling station to the shrinkage station. The working process is as follows: the bottle is conveyed to the labeling station by the conveying assembly, the position of the bottle is sensed by a sensor during the conveying process, then the labeling assembly performs the steps of label feeding, positioning, cutting, and shooting, so that the label is accurately sleeved on the bottle, and then the bottle at the labeling station is conveyed to the shrinkage station by the conveying assembly, and the bottle is subjected to shrinkage treatment so that the label is tightly attached to the surface of the bottle, achieving an aesthetic and anti-counterfeiting effect.

[0003] Generally, the shrinkage assembly in the above-mentioned is usually designed as a box type. For example, the patent document with the authorization announcement number CN220810110U discloses a horizontal labeling machine. The labeling machine has a heat shrinkage part for tightly shrinking the label sleeved on the bottle body on the outer surface of the bottle body. The heat shrinkage part is a high-temperature heating box. The conveying device can pass the bottle with the sleeved label through the high-temperature heating box. After being treated by the high-temperature heating box, the label is heated and shrunk, and can be tightly wrapped on the outer surface of the bottle body.

[0004] The working of the above-mentioned high-temperature heating box is to create a high-temperature atmosphere environment inside it, so that the bottle with the sleeved label is shrunk when it enters the environment. However, the formation of such a high-temperature atmosphere environment will cause the label to enter the environment all around when the bottle with the sleeved label enters, and then the label will shrink at the same time. Such synchronous shrinkage action may cause the stress of the label to be unable to release, resulting in over-shrinking or under-shrinking in some local places, and the shrinkage effect is not good. Moreover, the formation of such a full-wrapping type high-temperature atmosphere environment requires the high-temperature heating box to be in a high-temperature state at all times to maintain it, which consumes a lot of energy and increases the production cost. SUMMARY

[0005] The purpose of the present application is to solve the problems in the prior art and provide a shrinkage device of a labeling machine for a bottle body and a labeling system, so that the bottle body is changed from conventional full-body wrapping heat shrinkage to top-down gradual heat shrinkage, the label shrinks uniformly, and the gradual heat shrinkage method consumes less steam than the high-temperature atmosphere environment provided by the conventional wrapping method, saving the production cost.

[0006] To solve the above-mentioned problems, the present application provides the following technical solutions: A shrink device for a sleeve labeling machine for bottle bodies, comprising a shrink assembly and a conveying assembly for conveying the bottle bodies to the shrink assembly; the shrink assembly comprises a second frame arranged on a rack of the conveying assembly, two groups of parallel steam pipes are arranged in the second frame, and the steam pipes are arranged obliquely along the direction of movement of the bottle bodies; the inner sides of the two groups of steam pipes are provided with air outlets, so that the area between the two groups of steam pipes forms a walking channel for gradually heat-shrinking the label from bottom to top.

[0007] As a further scheme of the present application: the conveying assembly comprises a plate chain and a bottle seat; the bottle seat comprises two groups of sub-molds with grooves and capable of switching between a closed mold mode and an open mold mode, and the two groups of sub-molds are respectively fixed on two chain plates of the plate chain; a positioning key is arranged on the sub-mold at the front position in the conveying direction, and the side of the positioning key protruding from the groove forms a guide rail for directional sliding of the through groove. When the two groups of sub-molds are in the closed mold mode, the two grooves form a storage cavity for inserting the bottle mouth; when the two groups of sub-molds are in the open mold mode, the sub-mold at the front position in the conveying direction is in an inclined state, and the inverted bottle body is in the same inclined state as the side of the positioning key to realize material falling.

[0008] As a further scheme of the present application: a limiting groove is further arranged on the bottle seat, the limiting groove is adapted to the shape of the bottle mouth protrusion and is recessed at the top of the sub-mold, and is used for supporting and limiting the protrusion.

[0009] As a further scheme of the present application: the limiting groove is of a split design, and is spliced by a first sub-groove and a second sub-groove, and the first sub-groove and the second sub-groove are respectively arranged on the two groups of sub-molds.

[0010] As a further scheme of the present application: the guide rail is arranged along the length direction of the positioning key, and the end of the guide rail close to the opening of the storage cavity is designed in a sharp chamfered manner.

[0011] As a further scheme of the present application: the joint ends of the two groups of sub-molds are recessed with mounting grooves, and the sum of the groove depths of the two mounting grooves is equal to the thickness of the positioning key, so that when the positioning key is arranged on the corresponding sub-mold, the positioning key is in the central position between the two groups of sub-molds.

[0012] As a further scheme of the present application: a support rod is arranged at the end of the shrink assembly, the support rod is fixed on the rack, and a horizontal extending blocking rod is arranged on the support rod, the blocking rod is located in the movement path range of the bottle body, when the two groups of sub-molds are in the open mold mode and the bottle body is in the inclined state by the guide rail, the blocking rod can block the bottle body to make the bottle mouth of the bottle body separate from the guide rail.

[0013] As a further scheme of the present application: the positioning key is detachably arranged on the mounting groove of the sub-mold.

[0014] The application further provides a labeling system, which is based on the labeling machine shrinkage device for the bottle body and further comprises a labeling assembly for labeling the bottle body.

[0015] As a further scheme of the application, the labeling assembly comprises a first frame arranged at the plate chain, a guide column arranged vertically in the first frame, a feeding element arranged at the top of the first frame for feeding labels to the guide column, and two driving wheels arranged in the first frame and contacting the labels outside the guide column, so that the two driving wheels can synchronously rotate to apply a downward movement trend to the labels when the bottle body moves below the guide column.

[0016] As a further scheme of the application, the system further comprises a pressing assembly arranged between the labeling assembly and the shrinkage assembly, wherein the pressing assembly comprises a third frame arranged at the plate chain, and a pressing plate arranged on the third frame and capable of reciprocating into the range of the bottle body movement path for pressing the labels protruding from the bottle body.

[0017] Compared with the prior art, the application has the following advantages: 1. The combination of the circulating and reciprocating plate chain conveying system and the inclined steam pipeline can realize continuous and automatic conveying and efficient heat shrinkage of the bottle body. The two groups of parallel arranged steam pipelines are inclined along the movement direction of the bottle body, and form a heat flow channel from bottom to top in cooperation with the inner gas outlet, so that the labels are uniformly heated and gradually shrink, and the label deformation or damage caused by local overheating is effectively avoided. Meanwhile, the steam atmosphere environment created by the pipeline layout consumes less steam than the wrapping type high temperature atmosphere environment in the prior art, and the production cost is saved.

[0018] 2. The modular bottle seat design, in which the bottle seat is composed of two groups of openable and closable sub-modules, can realize automatic clamping and releasing of the bottle body. In the closed mode, the two grooves form a storage cavity, and the cooperation of the positioning key and the limiting groove ensures the accurate positioning of the bottle body and avoids deviation or tilting during conveying. Meanwhile, the accurate positioning of the bottle body in the closed mode can firmly position the bottle body when it passes through the shrinkage assembly, so that the position of the bottle body is not disturbed by the steam environment. In the open mode, the front sub-module is automatically inclined, and the bottle body slides off the positioning key side edge to realize automatic discharging and reduce manual intervention, thereby improving the production efficiency.

[0019] 3. The side of the positioning key features a protruding guide rail design, arranged along the length, forming a stable guide track. This rail structure enhances the sliding stability of the bottle slot, reduces bottle shaking during conveyance, improves positioning accuracy, reduces friction loss, and extends the service life of the equipment. Furthermore, a sharp chamfer is used on the end of the rail closest to the storage cavity opening, making it easier for bottles to slide into the rail and preventing jamming caused by edge burrs or misalignment. This structure optimizes bottle assembly, improves production cycle time, and reduces failure rates.

[0020] 4. By setting the guide rail on the sub-mold located at the front, when the mold is open, the bottle mouth presents the same tilted state as the front sub-mold only by virtue of the plug-in fit between its through groove and the guide rail; when the bottle body is blocked by the blocking rod, the bottle body will rotate with the bottle mouth as the center of the circle at a corresponding angle. During this rotation process, since the bottle mouth is placed on the sub-mold only by virtue of the plug-in fit between its through groove and the guide rail, and is not blocked by the limit of other positions of the sub-mold, the through groove on the bottle mouth slides out of the guide rail directly, thereby realizing rapid blanking.

[0021] 5. The limit slot adopts a split structure, consisting of a first and second sub-slot, respectively located on the two molds. This design reduces processing difficulty, facilitates maintenance and replacement, and improves adaptability. The sub-slot structure can be adjusted to different bottle mouth convex shapes, enhancing the versatility of the equipment.

[0022] 6. The joint ends of the two molds are provided with mounting grooves, the sum of which is equal to the thickness of the positioning key, ensuring that the positioning key is located in the center of the two molds after installation. This structure improves the installation accuracy of the positioning key, avoids deflection, enhances overall rigidity, reduces the impact of vibration on bottle positioning, and further improves conveying stability.

[0023] 7. A support rod and a stopper are installed at the end of the retraction assembly. When the secondary mold switches to the open position, the stopper applies a blocking force to the tilted bottle body, allowing the bottle mouth to smoothly disengage from the guide rail for reliable bottle removal. This structure improves the automation of blanking, prevents jams, reduces manual intervention, and enhances the continuous operation capacity of the production line. Furthermore, the purely mechanical structure of the support rod and stopper avoids the complex structure of pneumatic or electric solutions, providing higher reliability.

[0024] 8. The sleeve labeling component and shrinking component are integrated into the same system, achieving a seamless connection between the sleeve labeling and heat shrinking processes. This design reduces intermediate transfer links and improves production efficiency. At the same time, the system has strong compatibility and can adapt to different specifications of bottles and labels to meet diverse production needs.

[0025] 9. A pressure assembly is arranged between the sleeving and shrinking processes, and the convex label is pressed by the reciprocating pressure plate, so as to ensure that the label is close to the bottle body and improve the quality of the subsequent heat shrinking. The stroke of the pressure plate is adjustable, the label of different height can be adapted, the flexibility and adaptability of the equipment are enhanced, and the risk of label misplacement or wrinkling is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] The application will be further described below with reference to the drawings.

[0027] Figure 1 is a schematic diagram of the new structure of the packaging bottle body of the application Figure 1 ; Figure 2 is a schematic diagram of the new structure of the packaging bottle body of the application Figure 2 ; Figure 3 is a schematic diagram of the sleeving system structure of the application; Figure 4 is a schematic diagram of the local structure in Figure 3 ; Figure 1 Figure 5 is a schematic diagram of the side view structure of the two groups of steam pipes of the application; Figure 6 is a schematic diagram of the structure of the two sets of molds in the closed mold state of the application; Figure 7 is a schematic diagram of the structure of the two sets of molds in the separated mold state of the application; Figure 8 is an exploded schematic diagram of Figure 7 ; Figure 9 is a schematic diagram of the top view structure of the two sets of molds in the closed mold state of the application; Figure 10 is a schematic diagram of the three-dimensional structure of the plate chain of the application; Figure 11 is a schematic diagram of the three-dimensional structure of the two sets of molds arranged on the plate chain of the application; Figure 12 is a schematic diagram of the local structure in Figure 3 ; Figure 2 Figure 13 is a schematic diagram of the local structure in Figure 3 ; Figure 3 Figure 14 is a schematic diagram of the local structure in Figure 3 ; Figure 4 Figure 15 is a schematic diagram of the structure in which the label is not completely sleeved on the bottle body.

[0028] In the drawings: ​​​​101. packaging bottle body; 102. external thread; 103. through groove; 104. annular flange; 105. convex portion; 1. Label sleeve assembly; 2. Shrinkage assembly; 3. Conveying assembly; 301. Plate chain; 3011. Chain plate; 4. Bottle seat; 5. Positioning key; 6. Limiting groove; 7. Guide rail; 8. Mounting slot; 9. Support rod; 10. Baffle rod; 11. First frame; 12. Guide column; 13. Feeding part; 14. Driving wheel; 15. Second frame; 16. Steam pipe; 1601. Air outlet; 17. Pressing assembly; 18. Third frame; 19. Pressing plate; 20. Driving source; 21. Transfer slide; 22. Bolt; 23. Nut; a. Bottle body. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] Example 1: like Figures 3-5 and Figures 13-15 As shown, a sleeve labeling system includes a sleeve labeling component 1 for applying labels to bottles a, a shrinking component 2 for heat shrinking the sleeved bottles a, and a conveying component 3 for conveying the two components. The conveying component 3 is used to convey the bottles a to be sleeved to the sleeve labeling station of the sleeve labeling component 1. After the sleeve labeling component 1 completes the sleeve labeling work on the bottles a, the conveying component 3 conveys the bottles a to the shrinking station of the shrinking component 2. That is, the upstream section of the conveying component 3 is located at the sleeve labeling component 1, and the downstream section is located at the shrinking component 2.

[0031] For the above-mentioned sleeve label assembly 1, the sleeve label assembly 1 can be directly used as a conventional component in the prior art, or a sleeve label assembly 1 proposed in the present application can be used, which comprises a first frame 11 arranged at an upstream section of the conveying assembly 3, the top outer wall of the first frame 11 is provided with a feeding member 13, and the top inner wall of the first frame 11 is provided with a guide column 12, the feeding member 13 is used to feed labels to the guide column 12, the fed labels are sleeved outside the guide column 12, and a sleeve labeling station is formed below the guide column 12. Two groups of driving wheels 14 are further arranged in the first frame 11, the two driving wheels 14 are driven to rotate by corresponding motors, the two driving wheels 14 are arranged on both sides of the guide column 12 and are in contact with the labels outside the guide column 12, when the bottle body a is conveyed to the sleeve labeling station by the conveying assembly 3, the two driving wheels 14 are synchronously rotated to apply a downward movement trend to the labels, so that the labels can be accurately sleeved on the bottle body a and completely wrapped thereon. Figure 13 As shown in the state, the rotation directions of the two driving wheels 14 are as follows: the driving wheel 14 on the left side rotates in a clockwise direction, and the driving wheel 14 on the right side rotates in a counterclockwise direction.

[0032] It should be noted that during the sleeve labeling process, the conveying assembly 3 can be in a non-stop state, when it drives the bottle body a to move to the sleeve labeling station, the two driving wheels 14 quickly apply a downward force to the labels, so that the labels are sleeved on the bottle body a in a very short time. Meanwhile, the feeding member 13 is a conventional component in the prior art, which will not be described herein.

[0033] For the above-mentioned sleeve label assembly 1, the sleeve label assembly 1 can be directly used as a conventional component in the prior art, or a sleeve label assembly 1 proposed in the present application can be used, which comprises a first frame 11 arranged at an upstream section of the conveying assembly 3, the top outer wall of the first frame 11 is provided with a feeding member 13, and the top inner wall of the first frame 11 is provided with a guide column 12, the feeding member 13 is used to feed labels to the guide column 12, the fed labels are sleeved outside the guide column 12, and a sleeve labeling station is formed below the guide column 12. Two groups of driving wheels 14 are further arranged in the first frame 11, the two driving wheels 14 are driven to rotate by corresponding motors, the two driving wheels 14 are arranged on both sides of the guide column 12 and are in contact with the labels outside the guide column 12, when the bottle body a is conveyed to the sleeve labeling station by the conveying assembly 3, the two driving wheels 14 are synchronously rotated to apply a downward movement trend to the labels, so that the labels can be accurately sleeved on the bottle body a and completely wrapped thereon. Figure 4 As shown in the state, the rotation directions of the two driving wheels 14 are as follows: the driving wheel 14 on the left side rotates in a clockwise direction, and the driving wheel 14 on the right side rotates in a counterclockwise direction. Figure 5 As shown in the state, the rotation directions of the two driving wheels 14 are as follows: the driving wheel 14 on the left side rotates in a clockwise direction, and the driving wheel 14 on the right side rotates in a counterclockwise direction. Figure 4 As shown in the state, the rotation directions of the two driving wheels 14 are as follows: the driving wheel 14 on the left side rotates in a clockwise direction, and the driving wheel 14 on the right side rotates in a counterclockwise direction.

[0034] The design of the walking path is adapted to the advancing direction of the bottle body a, and the label on the bottle body is gradually shrunk from bottom to top, so that the label can be tightly attached to the bottle body, achieving comfortable visual effect and perfect anti-counterfeiting effect.

[0035] Embodiment two: As shown in Figure 3 and Figures 14-15 , on the basis of the setting of the label sleeving assembly 1, the shrinking assembly 2 and the conveying assembly 3, in the label sleeving process, the label may not be fully wrapped around the bottle body, for example, the situation shown in Figure 15 , in which the lower part of the bottle body cannot be sleeved by the label. Therefore, the present application is provided with a pressing assembly 17 downstream of the label sleeving assembly 1 on the conveying assembly 3, which is described as follows: The pressing assembly 17 is used to press the label in the state shown in Figure 15 downward, so that the label can be completely wrapped around the bottle body, facilitating subsequent shrinking. Specifically, the pressing assembly 17 comprises a third frame 18 provided on the conveying assembly 3, and a pressing plate 19 provided on the third frame 18, which can move up and down along the vertical direction. When the pressing plate 19 is in the lower position, it is in contact with the top of the bottle body. In this design, when the label on the bottle body processed by the label sleeving assembly 1 is in a protruding state, the bottle body a moves to the lower side of the pressing plate 19, and the downward movement of the pressing plate 19 can push the label downward. Since the pressing plate 19 is in the lower position and only in contact with the top of the bottle body, the label will be pushed to completely wrap around the bottle body, and the pressing plate 19 will not cause damage to the top of the bottle body.

[0036] For the up-and-down reciprocating movement of the pressing plate 19, a driving source 20 can be provided on the third frame 18. The driving source 20 can be a conventional air cylinder, oil cylinder, electric push rod, etc., or a crank mechanism composed of a motor and a connecting rod, etc.

[0037] Embodiment three: In order to meet different production needs, manufacturers generally improve the conventional bottle body a to obtain a new structure bottle body, Figure 1 and Figure 2 show a packaging bottle body structure with corresponding structural improvements, Figure 1 and Figure 2The figures show two different perspectives. Reference numeral 101 represents the packaging bottle body, reference numeral 102 represents the external thread protruding from the bottle mouth, reference numeral 103 represents a through groove recessed in the external thread and arranged along the axis of the bottle mouth, reference numeral 104 represents an annular flange protruding from the bottle mouth, and reference 105 represents a protrusion provided on the annular flange and extending radially along the bottle mouth. Based on the proposed bottle body a, simply providing a base on the conveyor assembly 3 would make it difficult to position and secure the irregularly shaped bottle mouth of the newly designed bottle body a. This could easily cause the bottle body a to wobble or shift during conveyance, preventing proper labeling and shrinking operations. Therefore, this embodiment incorporates design improvements to the conveyor assembly 3.

[0038] like Figures 6-11 As shown, the conveying assembly 3 includes a plate chain 301 and a bottle holder 4. The plate chain 301 can make a cyclic reciprocating motion. A part of the plate chain 301 can be Figure 10 The bottle holder 4 is composed of two sets of sub-molds 401 with groove cavities, and the two sub-molds 401 are symmetrically arranged on the two chain plates 3011 of the plate chain 301. Figure 11 The figure shows the situation where two sub-molds 401 are installed on the plate chain 301. Here, the two sub-molds 401 are respectively installed on two chain plates 3011 with a chain plate 3011 between them. Of course, the specific installation situation can be set according to the actual situation and is not limited to the actual situation. Figure 11 The installation is limited to the shown situation.

[0039] Under normal conveying conditions, the two molds 401 are presented on the plate chain 301. Figure 11 In the state shown, the two sub-molds 401 are in a closed mold state, and the grooves of the two sub-molds 401 are combined to form a storage cavity for inserting the bottle mouth, and the opening of the storage cavity is a chamfered design. Figure 11 The direction of the middle arrow indicates the direction of travel of the bottle body a. When the two sub-molds 401 move to the end of the plate chain 301, the sub-mold 401 at the front of the travel direction will first be tilted. This state can be determined by Figure 3 and Figure 12 To express, Figure 12 Among the two sub-molds 401 in the mold-opening state, the sub-mold 401 on the right can be represented as the sub-mold 401 located at the front position in the moving direction. At this time, the two sub-molds 401 are in the mold-opening state, the storage cavity shape is broken, and the bottle mouth will move out of the bottle seat 4.

[0040] In order to ensure that the bottle mouth can be stably restricted and driven by the bottle seat 4 after being inserted into the storage cavity, this embodiment is designed based on the through groove 103 on the bottle body a, and a positioning key 5 is added. The positioning key 5 is set on the sub-mold 401 at the front position of the moving direction. One side of the positioning key 5 is located in the groove cavity of the sub-mold 401. When the two sub-molds 401 are in the mold closing state, the side of the positioning key 5 is protruded in the storage cavity. This state can be controlled byFigure 9 To illustrate, the existence of this side edge can be used for the through groove 103 to be fitted and directionally slid when the bottle mouth is placed from top to bottom toward the storage cavity. Relying on this side edge, the position of the bottle mouth in the storage cavity can be limited, so that the bottle body a always remains stable on the bottle seat 4.

[0041] Based on the existence of the side of the positioning key 5, when the two sub-molds 401 are in the mold opening state, since the positioning key 5 is set on the sub-mold 401 located at the front position of the moving direction, when the sub-mold 401 is in a tilted state in advance, the bottle body a can be moved to the same tilted state with the side of the positioning key 5. The tilted state can be adjusted by the positioning key 5. Figure 12 To illustrate, when the sub-mold 401 is tilted to a sufficiently large angle, the through slot 103 at the bottle mouth will slide off from the side of the positioning key 5 and move out of the sub-mold 401.

[0042] In order to prevent the bottle body a from being inconvenient to collect due to the large tilt angle along with the auxiliary mold 401, a support rod 9 is provided at the end position of the plate chain 301 in this embodiment. A horizontally arranged blocking rod 10 is provided on the support rod 9. The blocking rod 10 is located within the range of the movement path of the bottle body a. When the two auxiliary molds 401 are in Figure 12 In the open position shown, with bottle a tilted against the side of the positioning key 5, the blocking rod 10 blocks the bottle body of bottle a, allowing the bottle mouth of bottle a to disengage from the side of the positioning key 5, thereby achieving dropout. Furthermore, based on this relatively small dropout angle, this embodiment provides ample space for a transfer chute 21 at the end of the leaf chain 301 to receive dropped bottles.

[0043] Specifically, the side of the positioning key 5 located in the groove cavity is an integrally formed protruding design, which forms a guide rail 7 on the side. The guide rail 7 is arranged along the length direction of the positioning key 5. At the same time, in order to allow the through slot 103 of the bottle mouth to be inserted smoothly from top to bottom, the end of the guide rail 7 close to the opening of the storage cavity is set to a sharp chamfered design to Figure 6 From the state shown, the top end of the guide rail 7 is designed with a sharp chamfer, which can guide the insertion action of the through slot 103.

[0044] Furthermore, based on the design of the convex portion 105 of the bottle body a, this embodiment can also open a limiting groove 6 at the top of the sub-mold 401. In the process of inserting the bottle mouth into the storage cavity from top to bottom, on the basis of using the side of the positioning key 5 to limit the through groove 103, the limiting groove 6 is also used to accommodate and limit the convex portion 105, so that the entire bottle mouth is restricted in multiple directions in the storage cavity, presenting a good stable state.

[0045] Preferably, the limiting groove 6 is arranged directly above the positioning key 5, forming a coherent positioning system, so that the positioning of the bottle mouth protrusion 105 and the through groove 103 remain on the same vertical line. This optimized layout improves positioning accuracy, reduces the shaking of the bottle body a during transportation, and ensures process stability.

[0046] In order to facilitate the bottle body a on the sub-mold 401 in the open mold state, in this embodiment, a mounting groove 8 is recessed at the joint end of the two sub-molds 401. The sum of the groove depths of the two mounting grooves 8 is equal to the thickness of the positioning key 5. When the positioning key 5 is installed on the corresponding sub-mold 401, the positioning key 5 is located in the middle position between the two sub-molds 401. Figure 12 As shown, only half of the bottle mouth is located on the groove cavity of the right sub-mold 401, which reduces the restriction of the sub-mold 401 on the bottle mouth in the open mold state, so that when the bottle body is blocked by the blocking rod 10, a slight offset of the center of gravity of the bottle body a can make it fall at a smaller tilt angle.

[0047] In order to further make the bottle body a better for blanking, the present embodiment is not limited to setting the limiting groove 6 as a single integral type, but is set as a split first sub-groove 601 and a second sub-groove 602. The first sub-groove 601 and the second sub-groove 602 are respectively provided on the two sub-molds 401. Preferably, the first sub-groove 601 is provided on the sub-mold 401 at the rear edge position in the direction of travel, and the second sub-groove 602 is provided on the sub-mold 401 at the front edge position in the direction of travel. This design can be Figure 7 To indicate. Figure 12 In the mold-opening state shown, only half of the bottle mouth is located on the second sub-slot 602 on the right side, further reducing the restriction on the bottle mouth in the mold-opening state and facilitating subsequent blanking.

[0048] Since different bottles a have different depths and widths of through grooves 103 at their mouths, in this embodiment, the positioning key 5 is provided on the secondary mold 401 as a detachable design, which can be any one of a snap connection, a buckle connection, an adhesive connection, a threaded connection, etc. Figure 8 As shown, taking threaded connection as an example, the positioning key 5 is installed at the corresponding position of the sub-mold 401 through the cooperation of the bolt 22 and the nut 23.

[0049] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A shrinking device for a bottle labeling machine, characterized in that: The invention comprises a shrinking assembly (2) and a conveying assembly (3) for conveying a bottle body (a) to the shrinking assembly (2); the shrinking assembly (2) comprises a second frame (15) arranged on a frame of the conveying assembly (3); two sets of parallel steam pipes (16) are arranged in the second frame (15), and the steam pipes (16) are arranged obliquely along the direction of travel of the bottle body (a); the inner sides of the two steam pipes (16) are both provided with an air outlet (1601), so that the area between the two steam pipes (16) constitutes a walking channel for gradually shrinking the label from bottom to top.

2. The shrinking device for bottle sleeve labeling machine according to claim 1, characterized in that: The conveying assembly (3) includes a plate chain (301) and a bottle stand (4); the bottle stand (4) includes two sets of sub-molds (401) having grooves and capable of switching between a closed mode and an open mode, and the two sub-molds (401) are respectively fixed on two chain plates (3011) of the plate chain (301); a positioning key (5) is provided on the sub-mold (401) at a front position in the conveying direction, and a side edge thereof protruding from the groove forms a guide rail (7) for directional sliding of the through groove (103); When the two sub-molds (401) are in a closed state, the two grooves are combined to form a storage cavity for inserting the bottle mouth; when the two sub-molds (401) are in an open state, the sub-mold (401) located at the front position of the conveying direction is in an inclined state, and the inverted bottle body (a) is in the same inclined state with the side of the positioning key (5) to achieve blanking.

3. The shrinking device for bottle sleeve labeling machine according to claim 2, characterized in that: A limiting groove (6) is also provided at the bottle seat (4), and the limiting groove (6) is adapted to the shape of the bottle mouth convex portion (105) and is recessed at the top of the secondary mold (401) to support and limit the convex portion (105).

4. The shrinking device for bottle labeling machine according to claim 3, characterized in that: The limiting groove (6) is of split design, and is formed by splicing a first sub-groove (601) and a second sub-groove (602), and the first sub-groove (601) and the second sub-groove (602) are respectively arranged on the two sub-moulds (401).

5. A shrinking device for a bottle sleeve labeling machine according to any one of claims 2 to 4, characterized in that: The guide rail (7) is arranged along the length direction of the positioning key (5), and one end of the guide rail (7) close to the opening of the storage cavity is designed with a sharp chamfer.

6. A shrinking device for a bottle sleeve labeling machine according to any one of claims 2 to 4, characterized in that: The joint ends of the two sub-molds (401) are both recessed to form mounting grooves (8), and the sum of the groove depths of the two mounting grooves (8) is equal to the thickness of the positioning key (5), so that when the positioning key (5) is installed on the corresponding sub-mold (401), the positioning key (5) is located in the center between the two sub-molds (401).

7. A shrinking device for a bottle sleeve labeling machine according to any one of claims 2 to 4, characterized in that: A support rod (9) is provided at the end of the shrinking assembly (2), the support rod (9) is fixed on the frame and a horizontally extending blocking rod (10) is arranged on the support rod (9), and the blocking rod (10) is located within the movement path of the bottle body (a). When the two sub-molds (401) are in the open mold state and the bottle body (a) is tilted against the guide rail (7), the blocking rod (10) can produce a blocking effect on the bottle body (a), so that the bottle mouth of the bottle body (a) is separated from the guide rail (7).

8. A sleeve labeling system using the shrinking device of a bottle sleeve labeling machine according to any one of claims 1 to 7, characterized in that: It also includes a sleeve labeling component (1) for sleeve labeling the bottle body (a), and the sleeve labeling component (1) is arranged at an upstream position of the shrinking component (2).

9. The sleeve labeling system according to claim 8, characterized in that: The label sleeve assembly (1) comprises a first frame (11) provided at a plate chain (301), a guide column (12) arranged in a vertical direction is provided in the first frame (11), a feeding member (13) for conveying labels to the guide column (12) is provided at the top of the first frame (11), and two sets of driving wheels (14) are provided in the first frame (11), and the two driving wheels (14) are provided on both sides of the guide column (12) and both contact the labels outside the guide column (12), so that when the bottle body (a) moves to the bottom of the guide column (12), the two driving wheels (14) can rotate synchronously to impose a downward movement trend on the label.

10. The sleeve labeling system according to claim 9, characterized in that: The system further comprises a pressing assembly (17) arranged between the sleeve label assembly (1) and the shrinking assembly (2), wherein the pressing assembly (17) comprises a third frame (18) arranged at the plate chain (301), and a pressing plate (19) is arranged on the third frame (18) and can reciprocate within the range of the travel path of the bottle body (a) for pressing down the label protruding from the bottle body (a).

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