Label paper supply device

Abstract

The present invention discloses a label paper supply device. The label paper supply device comprises a label ejecting component, a pre-shrinking component and a label paper carrier arranged on a circulating conveying path, the label paper carrier is arranged in a matrix on the circulating conveying path, a label inlet station and a label outlet station are arranged on the circulating conveying path, the label ejecting component is located below the label outlet station, the pre-shrinking component is located above the label outlet station, and the pre-shrinking component is provided with parallel distributed pre-shrinking airways and an outlet for outputting hot air. The outlet for outputting hot air in the label paper supply device is independent of the label ejecting component, and finally the technical purpose of local heating of the label paper is achieved, and the technical effect of improving the quality of the heat shrink sleeve labeling process is achieved.

Description

Technical Field

[0001] The invention relates to a label paper supplying device. Background Art

[0002] Common cup-in-cup products are mainly small cups of yogurt. In addition to the cup body, the packaging of this yogurt product also includes a label paper attached to the surface of the cup body and a cover film attached to the mouth of the cup. There are two ways to combine the label paper and the cup body: thermoplastic bonding and heat shrink bonding. The two methods correspond to different materials of label paper. In the thermoplastic bonding method, the label paper is placed in the mold cavity required for the cup body to be formed in a curled state before the cup body is extruded. When the sheet is heated and extruded in the mold cavity, the label paper is attached to the body; the curled state here refers to the short strip of label paper rolled into a three-dimensional tubular structure. Although the head and tail of the label paper overlap, they are not fixedly connected. In the heat shrink bonding method, the cup body has been formed, and the label paper is not curled, but the label paper itself is tubular. The continuous tubular label paper is cut into shorter labels, and then these labels are put on the already formed cup body. Finally, the label paper is heated to promote its combination with the cup body. During the production stage of linked cup products, after the cup body is formed, it needs to be filled, sealed, and cut to obtain independent linked cup products. For products produced by thermoplastic bonding, the label paper is bonded to the cup body during the forming stage; for products produced by heat shrink bonding, the label paper is bonded to the cup body after the cutting stage (when forming independent linked cup products, the distance between linked cup products is large, which is convenient for labeling). Compared with the two bonding methods, not only is there a difference in the initial state structure of the required label paper, but there is also a difference in the intervention stage of the production process.

[0003] The heat shrink labeling method of heat shrinking the label paper and the cup body is called heat shrink sleeve labeling technology. The existing heat shrink sleeve labeling technology can install highly fitting label paper on the cup body with embossed design and multi-curved surface design, thus actively meeting the label paper packaging requirements required for innovative changes in the cup body shape.

[0004] The characteristic of the cup-joining process is that all functional components are distributed around the conveying path of the sheet material for making the cup body, and the same positioning basis is used until the positioning basis disappears after cutting to form a single independent product. In the industrial field, the lack of a unified positioning basis inside the equipment will increase the complexity of mechanical design and affect production efficiency. When cutting to form independent cup-joining products one by one, each cup-joining product has been separated from the aforementioned positioning basis. Therefore, if it is necessary to heat shrink the scattered independent cup-joining products, it is necessary to provide a positioning basis again. In other words, in the prior art, the heat shrink sleeve process involves secondary positioning operations. Obviously, there are many factors to consider in unifying the scattered cup-joining products on a positioning basis, which means that there is an uncertain relationship between each cup-joining product and the positioning basis. The defects of the secondary positioning operation are obvious. On the one hand, the reliability of the equipment is reduced, and on the other hand, the sleeve labeling effect is not ideal. The unsatisfactory sleeve labeling effect means that when the cup-joining product fails to be in the secondary positioning position, the state of the combination of the label paper and the cup body does not meet the set requirements.

[0005] During the process of combining the cup body and the label paper, the cup body is positioned twice and is in a fixed position, and the label paper is lifted under the cup body until the label paper is sleeved on the outside of the cup body. Since the label paper is closely attached to the cup body by a tiny friction force, it is very likely that the label paper will fall off the cup body during transportation before it shrinks due to heat. Therefore, the existing heat shrink sleeve labeling technology will use a pre-shrinkage treatment technology, that is, after the label paper is sleeved on the cup body, the end of the label paper close to the cup mouth is heated, so that the label paper shrinks partially due to heat. In this way, the label paper will be fixed on the cup body, but at this time, the label paper will only shrink partially.

[0006] The common pre-shrinkage technologies in the prior art are all based on the structure of lifting the label paper. The lifting component is provided with four vertically arranged air pipes, the ends of the air pipes are closed, and only the air outlet is provided on the side, and the air outlets of the four air pipes are all facing the same area. A protrusion structure is provided on the side of the air pipe, and the protrusions of the four air pipes can just hold the label paper. On each air pipe, the distance from the air outlet to the protrusion is equal to the height of the label paper. When lifting, the label paper is supported by the protrusion and moves upward with the air pipe until the label paper is put on the cup body and the air outlet is just aligned with the end of the label paper close to the cup mouth. Prior to this, since the heat shrink label paper is placed on the carrier before being lifted, before the protrusion contacts the label paper, the air outlet must start from one end of the label paper and surround the label paper until the air outlet reaches the other end of the label paper, and at the same time the protrusion contacts the label paper. The medium for heating the label paper is water vapor. During the actual production process, since the air outlet of the air pipe continuously outputs water vapor, the air outlet moves back and forth on the side of the label paper during the process of being lifted, so that the entire label paper is heated, but thanks to the short heating time, obvious shrinkage is avoided.

[0007] Therefore, the pre-shrinkage technology in the prior art cannot achieve local heating shrinkage of the label paper. Summary of the invention

[0008] The technical problem to be solved by the present invention is how to realize local heating of label paper, thereby obtaining a label paper supply device with reasonable structural design and high production efficiency.

[0009] In order to solve the above technical problems, the present invention adopts the following technical scheme: the label paper supply device includes a label ejecting component, a pre-shrinking component and a label paper carrier arranged on a circulating conveying path, the label paper carrier is arranged in a matrix on the circulating conveying path, and a label input station and a label output station are provided on the circulating conveying path, the label ejecting component is located below the label output station, and the pre-shrinking component is located above the label output station, the pre-shrinking component is provided with parallel distributed pre-shrinking air ducts and air outlets for outputting hot air, the air outlets are located at the top ends of both sides of the pre-shrinking air ducts, the pre-shrinking air ducts intersect with the circulating conveying path, the label ejecting component is provided with a pushing plate moving in the vertical direction, the pushing plate is movably connected to the label paper carrier and drives the label paper carrier to output the label paper into the pre-shrinking air duct.

[0010] In the present technical solution, the spatial position of the air outlet of the pre-shrinkage component is fixed and directly located at the top of both sides of the pre-shrinkage airway, which is closest to the mouth of the cup. After the label paper is put on, the air outlet always heats the portion of the label paper on the cup body close to the mouth of the cup, without heating other portions of the label paper, thereby achieving the purpose of local heating of the label paper. In the prior art, the heating and lifting functions are implemented based on the same structure. In the present technical solution, the heating function is independent of the lifting function, and the two are implemented based on different structures. Under the same use purpose, the gas consumption will be greatly reduced after the implementation of the present technical solution, which has the effect of energy saving and environmental protection.

[0011] The working mode of the pre-shrinkage component is as mentioned above, and heat is transferred by outputting water vapor. Since the cup body is already filled with items and the cup mouth is already sealed during the labeling process, the temperature needs to be lowered to maintain the firmness of the sealing structure. The heat near the cup mouth during the preheating and shrinking process has a negative impact on the sealing state. In order to reduce this effect, the label paper supply device also includes a cold pressing component, which is located above the pre-shrinkage component. The cold pressing component is provided with a cooling plate that moves in the vertical direction. During operation, the cooling plate is close to the cup mouth, and actively cools the sealing structure at the cup mouth.

[0012] After the label paper carriers are arranged in a matrix on the circulating conveying path, the distance between adjacent label paper carriers should correspond to the spacing between adjacent cup bodies, so the space between adjacent label paper carriers is narrow. In this technical solution, there can be multiple columns of label paper carriers arranged side by side. At the label output station, the label paper is output in a push-up manner, and the structure involved in the push-up action occupies less space, so the spacing between adjacent label paper carriers is not required. However, at the label input station, the label paper is supplied by the sleeve label machine in the prior art. The volume of the sleeve label machine is much larger than that of the label paper supply device, so the location setting of each label input station needs to consider the layout conditions of the sleeve label machine on site and the size of the space between adjacent label paper carriers. If all label input stations are arranged side by side, then there needs to be a large spacing between adjacent label paper carriers, the space where the label paper supply device is located will increase, and the structure will appear loose, and the space utilization rate will be greatly reduced; at the same time, it will also cause the layout of the sleeve label machine to be limited and cause unreasonable layout. In order to make the layout of the labeling machine reasonable, occupy less space, and make the label paper supply device compact, in the present technical solution, the label output stations are arranged side by side on the circulating conveying path, and the label input stations are arranged in a staggered manner on the circulating conveying path.

[0013] In order to improve the heat transfer efficiency of the medium, the setting of the air outlet is optimized, and the air outlet is facing the pre-shrinkage air channel; at the same time, a supporting structure is set to enable the cup body to be placed in a set position, and the pre-shrinkage component also includes a support plate, which is distributed between the pre-shrinkage air channels, and the upper part of the support plate protrudes from the top of the pre-shrinkage air channel.

[0014] The pre-shrinkage airway intersects with the cup-jointing conveying path. In order to meet this technical feature, the pre-shrinkage component in this technical solution adopts a frame structure. The pre-shrinkage component is provided with a mounting frame and an air supply pipe. The mounting frame includes a connecting rod and an overall n-shaped support frame. The support frames are fixedly connected by a connecting rod. The air supply pipe is composed of an L-shaped conveying portion and a T-shaped air outlet portion. One end of the conveying portion is fixed to the mounting frame through a fixing seat, and the other end of the conveying portion is connected to the middle part of the air outlet portion. The air outlet is located on the air outlet portion. The air supply pipes are symmetrically distributed on the mounting frame. The pre-shrinkage airway is located between the air supply pipes. The support plate is overall n-shaped. The two ends of the support plate are fixed on the connecting rod. The support plates are distributed on both sides of the air supply pipe. The pre-shrinkage component adopts this structure, which can not only obtain the maximum pre-shrinkage airway with a compact space layout, but also provide sufficient supporting force.

[0015] The support plate and the air outlet are arranged in a front-to-back position in the horizontal direction. The position distribution of the support plate will interfere with the space required for the air outlet to discharge air. Obviously, the support plate should not hinder the air outlet from discharging air while providing the support function. The best design is to arrange the part of the support plate that provides the support function and the air outlet in a staggered manner in the horizontal direction. For this purpose, the air outlets are distributed at intervals on the air delivery pipe, and the support plate is provided with notches distributed at intervals. The air outlet is connected to the pre-shrinkage air duct through the notches.

[0016] The key component for transporting label paper is the label paper carrier. To drive the label paper carrier to perform stepping motion along a circular path, it is necessary to maintain the tubular shape of the label paper and ensure that the label paper can be smoothly separated from the label paper carrier. To this end, the marking paper carrier includes a shape-keeping unit and a loading plate, the shape-keeping unit includes a shape-keeping part, a pushing part, a lifting rod, and a reset spring, the shape-keeping part is a columnar structure as a whole, the shape-keeping part is hollow inside, the shape-keeping part is provided with a shape-keeping surface distributed around the center line of the shape-keeping part, and a slide groove distributed around the center line of the shape-keeping part, the extension direction of the slide groove is parallel to the center line of the shape-keeping part, the slide groove is connected with the inside of the shape-keeping part, the pushing part is embedded in the slide groove and protrudes on the shape-keeping surface, the shape-keeping part is fixedly connected to the loading plate, the lifting rod is movably mounted on the loading plate in a sliding manner, one end of the lifting rod passes through the loading plate and is connected to the pushing part, the reset spring is mounted on the lifting rod, one end of the reset spring is connected to the other end of the lifting rod, and the other end of the reset spring is connected to the loading plate, the lifting rod is movably connected to the pushing plate, and the range of movement of the lifting rod intersects with the range of movement of the pushing plate. The ejecting label component provides power and transmits it to the marking paper through the lifting rod to achieve the operation purpose of outputting the marking paper. The pusher protrudes outward from the shape retainer, and the protruding part is used to push the label paper away from the shape retainer. Here, the outer contour of the shape retainer corresponds to the tubular structure of the label paper before heat shrinkage. The label paper carrier benefits from the fact that it is functionally independent of the function of outputting water vapor. The function of outputting water vapor is undertaken by the air outlet of the pre-shrinking component, which has a higher ceiling, that is, the maximum lifting height, compared with the label paper carrier in the prior art. The reason is that the raised structure on the trachea similar to the pusher in the prior art for pushing the label paper is not located at the top of the trachea, but at the lower end of the trachea, so the range of motion of the raised structure on the trachea is limited by the operating position of the top of the trachea and cannot obtain a higher position. In this technical solution, the function is independent of different structural foundations, and the range of motion of the pusher is not limited, so the range of motion of the pusher on the shape retainer is larger. In comparison, the minimum distance from the raised structure on the trachea in the prior art to the cup mouth is greater than the minimum distance from the pusher to the cup mouth in the present technical solution. The pushing height range of the pushing member is large. In this way, the technical solution can be applicable to label papers of different heights. When the lifting height of the pushing member is low, the label paper with a larger height can be output toward the cup body. When the lifting height of the pushing member is high, the label paper with a smaller height can be output toward the cup body.

[0017] The motion range of the pusher can be obtained by selecting a push-out label component with different pushing strokes. The pushing stroke of the push-out label component can also be set to be controllable. As a preferred embodiment of the present technical solution, the push-out label component includes a lifting assembly, the lifting assembly includes a servo motor, a reducer, and a crank slider assembly. The servo motor is connected to the reducer. The crank slider assembly includes a swing arm, a connecting rod, a slider and a guide rod. The center line of the guide rod is located in the vertical direction. The slider is movably mounted on the guide rod in a sliding manner. One end of the connecting rod is movably connected to the slider and the other end is movably connected to one end of the swing arm. The other end of the swing arm is fixedly connected to the output shaft of the reducer, and the push plate is fixed on the slider. Thanks to the controllability of the servo motor, the rising height of the push plate can be adjusted. Within the stroke range of the label carrier, the height of the push plate can be freely adjusted to output label paper suitable for cup bodies of various lengths, thereby achieving the purpose of expanding the scope of application.

[0018] The controllability of the ejecting component is combined with the lifting component in the prior art, and the lifting component can also obtain a highly controllable lifting process within its lifting height range. Therefore, when the controllability of the ejecting component is combined with the label paper carrier, the controllability of the label paper supply device is greatly improved.

[0019] In order to enable the marking paper to be smoothly combined with and separated from the marking paper carrier, the distance from one end of the conformal surface to the center line of the shape retaining member gradually decreases in the direction away from the carrier plate, thereby obtaining a gradually changing guiding structure, which plays a guiding role when adding marking paper and facilitates the separation of marking paper from the marking paper carrier when outputting marking paper.

[0020] The more label paper the label paper supply device outputs per unit time, the greater the design redundancy for improving the production capacity of the joint cup product production equipment. Because in the entire label paper supply sequence, the label paper supply device that realizes the input and output of label paper is the first to contact the label paper, and if its transportation and supply volume cannot be consistent with the number of cup bodies to be processed, then the time occupied by the label paper transportation and supply will seriously slow down the working rhythm of the joint cup product production equipment, which will eventually manifest as a low design capacity. Therefore, it can be judged that the capacity of the physical equipment will be lower after the implementation of the plan. In order to enable the design capacity of the joint cup product production equipment to be unlimited, in the label paper carrier on the circulating conveying path with large design redundancy, at least four conformal units are provided on the loading plate, thereby forming a multi-column conveying area corresponding to the number of conformal units on the circulating conveying path. In this technical solution, the technical feature of the staggered distribution of the label input stations on the circulating conveying path can be combined, and the label paper supply device can also obtain a more compact structure.

[0021] When the label carrier outputs the label, the interference caused by external forces in the horizontal direction should also be considered, that is, to avoid the label from tipping over when it is output. For this purpose, the push member is provided with a limit opening, and the push member is provided with a support part and a limit part at the limit opening. The direction of the support part is parallel to the extension direction of the slide, the support part protrudes on the conformal surface, the direction of the limit part is perpendicular to the extension direction of the slide, and the maximum distance from the limit part to the center line of the conformal unit is less than the maximum distance from the conformal surface to the center line of the conformal unit. The push member provides vertical and horizontal limiting effects at the limit opening, so that the label can maintain a tubular shape after it is separated from the shape retaining member, and has a certain resistance to interference from the horizontal direction.

[0022] The present invention adopts the above technical solution: the outlet for outputting hot air in the label paper supply device is independent of the label ejecting component, which ultimately achieves the technical purpose of local heating of the label paper and achieves the technical effect of improving the quality of the heat shrink sleeve labeling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Figure 1 A schematic diagram of the use of a label paper supply device of the present invention;

[0025] Figure 2 It is a structural schematic diagram of a pre-shrinking component of a label paper supply device of the present invention;

[0026] Figure 3 A schematic structural diagram of a label paper carrier of a label paper supply device of the present invention;

[0027] Figure 4 The present invention is a schematic diagram of the installation of a label ejecting component of a label paper supply device. DETAILED DESCRIPTION

[0028] The production equipment of the combined cup products includes a cup body sealing device, a label paper supply device, a heat shrinking furnace, such as Figure 1 , 2 , 3, and 4. The cup-joined product production equipment is provided with a cup-joined conveying path, on which are distributed uncut cup-joined products which are formed into a cup body structure by hot pressing of continuous sheets and then filled and sealed. The cup body sealing device is used to seal the cover film on the cup mouth. The cup body sealing device, the label paper supply device, and the heat shrinking furnace are arranged in sequence on the cup-joined conveying path, that is, the uncut cup-joined products first pass through the cup body sealing device, then the label paper supply device, and then the heat shrinking furnace. The cup rim structures on the uncut cup-joined products are all connected as a whole, and the cup bodies are distributed in a matrix.

[0029] The label paper supply device comprises a label ejecting component 1, a pre-shrinking component, a conveying component, a label paper carrier 2, and a cold pressing component 3.

[0030] The conveying component includes a mounting frame, a sprocket, a chain, a servo motor, and a reducer. The sprocket is mounted on the mounting frame through a rotating shaft. Four sprockets are arranged on the mounting frame. The sprockets are distributed in a matrix and are in a parallel position relationship with each other. The output shaft of the servo motor is fixedly connected to the input shaft of the reducer. The reducer is fixed on the mounting frame. The output shaft of the reducer is connected to one of the rotating shafts, so that the sprocket on the rotating shaft can be driven by the servo motor to operate. The chain is mounted on the sprockets in relative positions on the two rotating shafts, and the conveying component includes two chains. The servo motor can drive the two chains to move synchronously. The chain is stretched and unfolded on the sprocket to form an annular structure with arcs at both ends and a straight middle. The chain moves unidirectionally, thereby forming a circular conveying path. The label paper carrier 2 is mounted on the chain. When the chain is running, the label paper carrier 2 will move unidirectionally on the formed circular conveying path. The unidirectional movement direction of the chain is perpendicular to the conveying direction of the uncut cup-jointed product, that is, perpendicular to the conveying direction of the cup-jointed conveying path.

[0031] The ejection mark component 1 is located inside the conveying component, and it is surrounded by the circulating conveying path. The ejection mark component 1 includes a lifting assembly and an ejection plate 4. The lifting assembly includes a servo motor, a reducer, and a crank slider assembly. The crank slider assembly includes a frame, two sliders, four guide rods, two swing arms, two connecting rods, and a rotating shaft. The rotating shaft is movably mounted on the frame, and the swing arm is fixedly mounted on the rotating shaft. The four guide rods are symmetrically distributed on the frame, with two on one side and two on the other side, and all the guide rods are in a parallel position relationship with each other. One slider is movably mounted on the guide rod on one side in a sliding manner, and the other slider is movably mounted on the guide rod on the other side in a sliding manner. One end of the connecting rod is movably connected to one end of the slider, and the other end of the connecting rod is movably connected to one end of the swing arm. The output shaft of the servo motor is fixedly connected to the input shaft of the reducer, the reducer is fixed on the frame, and the output shaft of the reducer is fixedly connected to the rotating shaft. When the servo motor is working, it can drive the swing arm to swing, and the swing arm drives the connecting rod to move. The power is transmitted to the slider through the connecting rod. The slider makes linear reciprocating motion along the guide rod. The two sliders move synchronously and make linear reciprocating motion in the vertical direction. The push plate 4 is a long strip structure; a cross bar for assembling the push plate 4 is also provided between the two sliders. Four push plates 4 are evenly distributed on the cross bar, and the distance between adjacent push plates 4 is equal to the distance between adjacent cup bodies that are side by side on the cup conveying path. The power of the lifting assembly comes from the servo motor, which is controllable, so the height of the push plate 4 can be freely adjusted within the stroke; and the adjustment process is a stepless adjustment process, and any height within the stroke range can be reached. In the initial state, the push plate 4 is located at a lower position.

[0032] The lifting and lowering operation area of ​​the push plate 4 is located below the continuous cup conveying path and also inside the circulating conveying path where the marking paper carrier 2 is located. After the push plate 4 moves in the vertical direction, it can drive the marking paper carrier 2 located on the circulating conveying path.

[0033] The marking paper carrier 2 and the conveying component are connected in a modular manner. The length of the circulating conveying path corresponds to the length of a single marking paper carrier 2. The length of the circulating conveying path is sufficient to ensure that the marking paper carriers 2 arranged in the chain row are equidistantly distributed.

[0034] The label paper carrier 2 includes a shape-keeping unit 5 and a carrier plate 6, and the two ends of the carrier plate 6 are respectively connected to two chains on the conveying component of the label paper supply device. The shape-keeping unit 5 is a columnar structure as a whole, and includes a shape retainer 7, a pusher 8, a lifting rod 9, and a reset spring 10. The shape retainer 7 is a cylindrical structure as a whole, hollow inside, one end is closed, and the other end is open and connected to the inside. A slide groove 11 is opened around its body, and the slide groove 11 directly passes through the inside of the shape retainer 7; the number of the slide grooves 11 is four, and the four slide grooves 11 are distributed at equal angles around the center line of the shape retainer 7. The surface of the shape retainer 7 is a shape-keeping surface. Affected by the structure of the slide groove 11, the shape-keeping surface is not continuously distributed, and it is also distributed around the center line of the shape retainer 7. Since the width of the shape retainer 7 at its closed end gradually decreases in the direction away from the carrier plate 6, the distance from one end of the shape-keeping surface to the center line of the shape retainer 7 gradually decreases in the direction away from the carrier plate 6. The open end of the shape retainer 7 is fixedly connected to the carrier plate 6. The push member 8 is provided with a central connecting plate 12 and a push block 13. The central connecting plate 12 is in a cross shape and has four ends. The push block 13 is fixed to the central connecting plate 12 and four push blocks 13 are provided on the central connecting plate 12. The push block 13 is in a long strip shape as a whole. One end of the push block 13 is fixed to the central connecting plate 12 and the other end is used as the execution part of the pushing paper operation. A limit opening is provided on the push block 13, which causes the push member 8 to form a support part 14 and a limit part 15 at the limit opening.

[0035] The direction of the support part 14 is parallel to the extension direction of the chute 11, and the support part 14 protrudes from the conformal surface; the direction of the limiting part 15 is perpendicular to the extension direction of the chute 11, and the maximum distance from the limiting part 15 to the center line of the conformal unit 5 is less than the maximum distance from the conformal surface to the center line of the conformal unit 5, so that the limiting part 15 is located inside the conformal surface. When the label paper is output, the edge of the label paper contacts the push block 13 at the limit opening. The support part 14 provides the vertical support force, that is, the force required for the label paper to separate from the shape retaining member 7. After the label paper separates from the shape retaining member 7, the label paper is restricted by the limiting component, thereby ensuring that the label paper maintains an ideal tubular unfolded shape when pushed upward by the push block 13. Only when this shape is maintained can it be smoothly put on the cup body.

[0036] One end of the lifting rod 9 is fixedly connected to the center position of the central connecting plate 12, and the other end passes through the carrier plate 6. The return spring 10 is installed on the lifting rod 9. After installation, one end of the return spring 10 is connected to the other end of the lifting rod 9, and the other end of the return spring 10 is connected to the carrier plate 6. In the initial state, the return spring 10 pushes the lifting rod 9 so that the pusher 8 is close to the carrier plate 6. Driving the lifting rod 9 on any one of the shape-keeping units 5 can move the pusher 8 toward the closed end of the shape-keeping member 7.

[0037] Four conformal units 5 are arranged on the same carrier plate 6. The label paper carriers 2 are arranged in a straight line on the circulating conveying path. After all the conformal units 5 are distributed on the circulating conveying path, the conformal units 5 are arranged in a matrix. The circulating conveying path finally obtains four columns of areas with label paper conveying through the conformal units 5.

[0038] The circular conveying path is provided with a label entry station and a label exit station, which are arranged in sequence in the conveying direction of the circular conveying path, and the label paper carrier 2 first passes through the label entry station and then enters the label exit station. The label entry station and the label exit station are both arranged at the straight part of the circular conveying path. There is a label entry station on each column of conformal units 5, and the label entry station refers to a station where a conformal unit 5 receives label paper output from the labeling machine, so there are a total of four label entry stations on the four columns of conformal units 5. These four label entry stations are not arranged side by side in the conveying direction of the circular conveying path, but the label entry stations are staggered and distributed on the circular conveying path. There is a small column of label exit stations on each column of conformal units 5, and the label exit station refers to a station where the conformal unit 5 outputs label paper to the outside.

[0039] The label ejecting component 1 is located below the label ejecting station.

[0040] The extension direction of the push plate 4 is parallel to the conveying direction of the circulating conveying path. One push plate 4 corresponds to one column of conformal units 5. Therefore, there is one push plate 4 under each of the four columns of conformal units 5. The length of the push plate 4 is less than the length of the straight part of the circulating conveying path. When the push plate 4 moves upward, it can simultaneously drive multiple conformal units 5 distributed in a matrix, thereby outputting the label paper.

[0041] The pre-shrinkage component is located above the labeling station.

[0042] The pre-shrinkage component includes a mounting frame, an air pipe 16, and a support plate 17. The mounting frame is an arched frame structure, and the mounting frame includes a connecting rod 18 and a support frame 19, and the support frame 19 is generally n-shaped. Two support frames 19 are provided on the mounting frame, and the support frames 19 are fixedly connected by two connecting rods 18. The support frame 19 on the mounting frame is fixed on the mounting frame of the conveying component of the marking paper supply device, thereby, the mounting frame of the pre-shrinkage component is fixedly connected to the mounting frame of the conveying component of the marking paper supply device. The air pipe 16 is used to transport water vapor, and each air pipe 16 is composed of an L-shaped conveying part and a T-shaped air outlet part. One end of the conveying part is fixed to the connecting rod 18 of the mounting frame through a fixing seat, and the other end of the conveying part is connected to the middle part of the air outlet part. The air pipe 16 is provided with an air outlet 20 at the straight part of the air outlet, and these air outlets 20 are distributed in the horizontal direction. Two connecting rods 18 are provided on the mounting frame of the pre-shrinkage component, and each connecting rod 18 is provided with an air pipe 16, and the air pipes 16 at the two locations are symmetrically distributed. The distance between adjacent air pipes 16 in the extension direction of the connecting rod 18 is greater than the maximum width of any cup body. The support plate is generally n-shaped, and the two ends of the support plate 17 are fixed on the connecting rod 18, and the support plate 17 is distributed on both sides of the air pipe 16. The air outlets 20 on the air pipe 16 are grouped and distributed on the air pipe 16 at intervals. The upper end of the middle part of the support plate 17 is provided with notches distributed at intervals, and the air outlets 20 of the air pipe 16 face the notches on the support plate 17. The air outlets 20 of adjacent air pipes 16 in the extension direction of the connecting rod 18 all face the same area, which is the pre-shrinkage air channel on the pre-shrinkage component. The pre-shrinkage air channel is parallel to the cup-joining conveying path and the pre-shrinkage air channel intersects with the circulation conveying path. The air outlet 20 is located at the top of both sides of the pre-shrinkage air channel, and the upper part of the support plate 17 protrudes from the top of the pre-shrinkage air channel and intersects with the cup-joining conveying path. When the cup body passes through the pre-shrinkage air channel, the air outlet 20 is just aligned with the part of the cup body close to the cup mouth, and the uncut cup-joining product is supported by the support plate 17.

[0043] The cold pressing component 3 is located above the pre-shrinking component and above the cup-joining conveying path. In this way, the cup-joining conveying path is located between the cold pressing component 3 and the pre-shrinking component. The cold pressing component 3 includes a lifting cylinder and a cooling plate 21. The cylinder body of the lifting cylinder is mounted on the support frame 19 of the mounting frame of the pre-shrinking component through a fixing plate, and the cylinder body of the lifting cylinder is connected to the cooling plate 21. A water channel is provided inside the cooling plate 21, and the water channel can be connected to an external water supply pipeline, thereby continuously conveying cooling water inside the cooling plate 21.

[0044] The heat shrink furnace is a semi-enclosed structure, which includes a bottom plate, two side plates, and air nozzles arranged on the bottom plate and the side plates. The side plates are fixed to the bottom plate and are symmetrically distributed on the bottom plate. All the air nozzles face the middle area of ​​the heat shrink furnace. The middle area of ​​the heat shrink furnace is also located on the cup conveying path. When the cup body is placed in the heat shrink furnace, it is just located in the middle area of ​​the heat shrink furnace. The air nozzle is connected to the external air supply pipeline, so that water vapor can enter the heat shrink furnace from the air nozzle.

[0045] After the sheet on the joint cup product production equipment is processed by the cup body sealing device, the inside of the cup body is filled with items and the cup mouth is covered with a cover film, but at this time the sheet is in the state of an uncut joint cup product. On the label paper supply device, the labeling machine adds label paper to the label paper carrier 2 on the circulating conveying path to ensure that each shape-keeping unit 5 is loaded with a label paper. One side of the label paper is located at the limit opening on the push block 13 of the push member 8 of the shape-keeping unit 5, the support part 14 provides support force to the label paper, and the limit part 15 is located on the inner side of the label paper. At this time, the limit part 15 is not in direct contact with the label paper; the conformal surface of the shape retaining member 7 is connected to the inner side of the label paper, and the label paper then unfolds a cylindrical tubular structure corresponding to the contour of the conformal surface. When the label paper carrier 2 loaded with the label paper enters the label output station from the label input station, the label paper carrier 2 stops moving, and the push plate 4 on the label component 1 moves upward. When the push plate 4 contacts the lifting rod 9 on the label paper carrier 2, it can drive the push member 8 on the shape-keeping unit 5. The push member 8 drives the label paper to move in the direction of leaving the shape-keeping surface. At the same time, the cup body has been placed directly above the shape-keeping unit 5, and the pushed label paper is pushed to the position of the cup body. When the label paper leaves the shape-keeping surface, the limiting part 15 on the push block 13 immediately plays the function of maintaining the shape of the label paper. The uncut cup-to-cup product stops moving after entering the pre-shrinking airway of the pre-shrinking component. The support plate 17 in the pre-shrinking component directly contacts the uncut cup-to-cup product and provides support force for the uncut cup-to-cup product. The output label paper is in an ascending state directly below the cup body; the cooling plate 21 above the cup-to-cup conveying path descends and presses the uncut cup-to-cup product to the support plate 17 in the pre-shrinking component. During operation, water vapor is always transported in the air delivery pipe 16 of the pre-shrinking component, and the air outlet 20 always blows out water vapor toward the pre-shrinking airway. Since the air outlet 20 is only facing the end of the cup body close to the cup mouth, the label paper is placed behind the cup body, and the edge of the label paper close to the cup mouth is heated by water vapor, thereby forming a process of heating the local part of the label paper. Then, the cooling plate 21 rises to the initial position, the push plate 4 descends to the initial position, and the label paper carrier 2 moves on the circular conveying path, allowing the label paper carrier 2 with the label paper at the back to enter the label output station and wait for the next output of the label paper. After local heating, the label paper moves with the uncut continuous cup product and enters the heat shrinking furnace. During operation, the heat shrinking furnace also continuously outputs water vapor; when the rear cup body is covered with the label paper, the label paper in the heat shrinking furnace is thoroughly heated and shrinks, so that the label paper fits the cup body. Finally, a separate continuous cup product is formed after cutting.

Claims

1. A label paper supply device, characterized in that: The label paper supply device comprises a label ejecting component (1), a pre-shrinking component and a label paper carrier (2) arranged on a circulating conveying path, wherein the label paper carrier (2) is arranged in a matrix on the circulating conveying path, and a label inlet station and a label outlet station are provided on the circulating conveying path. The label ejecting component (1) is located below the label outlet station, and the pre-shrinking component is located above the label outlet station. The pre-shrinking component is provided with parallel pre-shrinking airways and air outlets (20) for outputting hot air, and the air outlets (20) are located at the top of the pre-shrinking airways on both sides of the pre-shrinking airways. The pre-shrinkage airway intersects with the circulation conveying path, and the ejecting component (1) is provided with an ejecting plate (4) that moves in the vertical direction. The ejecting plate (4) is movably connected to the marking paper carrier (2) and drives the marking paper carrier (2) to output the marking paper into the pre-shrinkage airway; the marking paper carrier (2) comprises a shape-keeping unit (5) and a loading plate (6), and the shape-keeping unit (5) comprises a shape-keeping member (7), a pushing member (8), a lifting rod (9), and a reset spring (10), and the shape-keeping member (7) is a columnar structure as a whole. The shape retaining member (7) is hollow inside, and is provided with a conformal surface distributed around the center line of the shape retaining member (7), and a slide groove (11) distributed around the center line of the shape retaining member (7). The extension direction of the slide groove (11) is parallel to the center line of the shape retaining member (7). The slide groove (11) is connected to the inside of the shape retaining member (7). The pushing member (8) is embedded in the slide groove (11) and protrudes on the conformal surface. The shape retaining member (7) is fixedly connected to the carrier plate (6). The lifting rod (9) is movably mounted on the loading plate (6) in a sliding manner, one end of the lifting rod (9) passes through the loading plate (6) and is connected to the pushing member (8), the return spring (10) is mounted on the lifting rod (9), one end of the return spring (10) is connected to the other end of the lifting rod (9), and the other end of the return spring (10) is connected to the loading plate (6), the lifting rod (9) is movably connected to the push plate (4), and the movable range of the lifting rod (9) intersects with the movable range of the push plate (4); The pushing member (8) is provided with a limiting opening, and the pushing member (8) is provided with a supporting portion (14) and a limiting portion (15) at the limiting opening, the supporting portion (14) is oriented parallel to the extension direction of the slide groove (11), the supporting portion (14) protrudes on the conformal surface, the limiting portion (15) is oriented perpendicular to the extension direction of the slide groove (11), and the maximum distance from the limiting portion (15) to the center line of the conformal unit (5) is less than the maximum distance from the conformal surface to the center line of the conformal unit (5); The air outlet (20) faces the pre-shrinkage air channel, and the pre-shrinkage component further comprises a support plate (17), wherein the support plate (17) is distributed between the pre-shrinkage air channels, and the upper part of the support plate (17) protrudes from the top of the pre-shrinkage air channel; The pre-shrinkage component is provided with a mounting frame and an air delivery pipe (16). The mounting frame comprises a connecting rod (18) and an overall n-shaped support frame (19). The support frames (19) are fixedly connected by the connecting rod (18). The air delivery pipe (16) is composed of an L-shaped delivery portion and a T-shaped air outlet portion. One end of the delivery portion is fixed to the mounting frame by a fixing seat, and the other end of the delivery portion is connected to the middle part of the air outlet portion as a whole. The air outlet (20) is located on the air outlet portion. The air delivery pipes (16) are symmetrically distributed on the mounting frame. The pre-shrinkage air channel is located between the air delivery pipes (16). The support plate (17) is overall n-shaped. The two ends of the support plate (17) are fixed on the connecting rod (18), and the support plate (17) is distributed on both sides of the air delivery pipe (16); the pre-shrinkage air channel is parallel to the cup-joining conveying path and the pre-shrinkage air channel intersects with the circulation conveying path; each air delivery pipe (16) is composed of an L-shaped conveying portion and a T-shaped air outlet portion; two connecting rods (18) are provided on the mounting frame of the pre-shrinkage component, and each connecting rod (18) is distributed with an air delivery pipe (16), and the air delivery pipes (16) at the two locations are symmetrically distributed, and the distance between adjacent air delivery pipes (16) in the extension direction of the connecting rod (18) is greater than the maximum width of any cup body; The air outlets (20) are spaced apart on the air delivery pipe (16), the support plate (17) is provided with spaced apart notches, and the air outlets (20) are connected to the pre-shrinkage air passage through the notches.

2. The label paper supply device according to claim 1, characterized in that: The label paper supply device further comprises a cold pressing component (3), wherein the cold pressing component (3) is located above the pre-shrinking component, and a cooling plate (21) which moves in a vertical direction is provided on the cold pressing component (3).

3. The label paper supply device according to claim 1, characterized in that: The label discharging stations are arranged side by side on the circulating conveying path, and the label feeding stations are arranged in a staggered manner on the circulating conveying path.

4. The label paper supply device according to claim 1, characterized in that: The label paper supply device is characterized in that: the label ejecting component (1) includes a lifting assembly, the lifting assembly includes a servo motor, a reducer, and a crank slider assembly, the servo motor is connected to the reducer, the crank slider assembly includes a swing arm, a connecting rod, a slider and a guide rod, the center line of the guide rod is located in the vertical direction, the slider is movably mounted on the guide rod in a sliding manner, one end of the connecting rod is movably connected to the slider, and the other end is movably connected to one end of the swing arm, the other end of the swing arm is fixedly connected to the output shaft of the reducer, and the ejection plate (4) is fixed on the slider.

5. The label paper supply device according to claim 1, characterized in that: The distance from one end of the conformal surface to the center line of the shape retaining member (7) gradually decreases in a direction away from the carrier plate (6).

6. The label paper supply device according to claim 1 or 3, characterized in that: At least four shape-preserving units (5) are arranged on the object carrier (6).

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