Shrink furnace and labeling machine

Abstract

The utility model relates to a shrink furnace and a labeling machine, the shrink furnace comprises a furnace body and an exhaust device, the furnace body is internally provided with an accommodating cavity, a shrink film is shrunk in the accommodating cavity, the exhaust device comprises a first exhaust pipe (1) and a second exhaust pipe (2) which are used for exhausting steam in the accommodating cavity, the first exhaust pipe (1) is communicated with the upper part of the accommodating cavity, and the second exhaust pipe (2) is communicated with the lower part of the accommodating cavity. And the second exhaust pipe (2) is communicated with the lower part of the accommodating cavity. The labeling machine comprises a shrink oven. The shrinkage effect of the bottom of the bottle can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of product packaging, in particular to a shrinking furnace and a label sleeve machine. Background Art

[0002] The label sleeve machine is a common packaging machinery and equipment, which is mainly used to put plastic film or metal foil on the product to play the role of identification, protection, decoration, etc. The shrinking oven is one of the key equipment in the label sleeve machine production line, which is mainly used to tightly combine the label and the bottle so that the label can be closely attached to the surface of the bottle. At the same time, it can also shrink the label to play the role of fixing and protecting.

[0003] The working principle of the shrink furnace is mainly realized by the principle of heat shrinkage. During the heat shrinkage process, the shrink film (a film made of polymer materials such as PVC, PET, etc.) has strong shrinkage and waterproof properties, and can be quickly shrunk and wrapped around the bottle at high temperature.

[0004] On the labeling machine production line, after the bottle passes through the labeling machine, it enters the shrinking oven for heat shrinkage. The shrink film is rolled up from the roller, cut into a suitable length by the film cutter, and wrapped around the bottle. Then, it is heated by hot air to shrink the shrink film quickly, so that the label and the bottle can be combined into one.

[0005] At present, when shrinking furnaces are used to produce special and irregular bottles, the shrinkage at the bottom is not perfect and the smile curve is not smooth.

[0006] The above statements are only used to provide background information related to the present application and do not necessarily constitute prior art.

[0007] It should be noted that the information disclosed in the background technology section of the present invention is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or suggestion in any form that the information constitutes prior art already known to those skilled in the art. Utility Model Content

[0008] The embodiment of the utility model provides a shrinking furnace and a label sleeve machine, which can effectively improve the shrinking effect.

[0009] According to one aspect of the utility model, a shrinking furnace is provided, comprising:

[0010] A furnace body, wherein a receiving cavity is provided inside the furnace body, and the shrink film is shrunk in the receiving cavity; and

[0011] The exhaust device comprises a first exhaust pipe and a second exhaust pipe for exhausting steam in the accommodating chamber, wherein the first exhaust pipe is connected to the upper part of the accommodating chamber, and the second exhaust pipe is connected to the lower part of the accommodating chamber.

[0012] In some embodiments, the first exhaust pipe is connected to the top of the accommodating chamber, and the second exhaust pipe is connected to the bottom of the accommodating chamber.

[0013] In some embodiments, the second exhaust pipe includes a first pipe segment and a second pipe segment, the first pipe segment is a U-shaped pipe, both end openings of the first pipe segment are connected to the accommodating cavity, and the second pipe segment is connected to the portion of the first pipe segment located between the two end openings.

[0014] In some embodiments, the exhaust device further includes a first flow regulating valve disposed on the first exhaust pipe; and / or the exhaust device further includes a second flow regulating valve disposed on the second exhaust pipe.

[0015] In some embodiments, the exhaust device includes a third exhaust pipe and a plurality of second exhaust pipes, and the plurality of second exhaust pipes are all in communication with the third exhaust pipe.

[0016] In some embodiments, the third exhaust pipe includes a pipe section extending in a horizontal direction.

[0017] In some embodiments, the third exhaust pipe is in communication with the first exhaust pipe.

[0018] In some embodiments, the exhaust device further includes a connecting pipe, and the second exhaust pipe is detachably connected to the accommodating chamber via the connecting pipe.

[0019] In some embodiments, the shrinkage furnace further includes a drain pipe and a switch valve. The drain pipe is communicated with the accommodating chamber. The drain pipe is configured to discharge condensed water in the accommodating chamber. The switch valve is disposed on the drain pipe.

[0020] According to another aspect of the utility model, a sleeve labeling machine is provided, comprising the above-mentioned shrinking furnace.

[0021] Based on the above technical solution, the utility model connects the first exhaust pipe to the upper part of the accommodating chamber and the second exhaust pipe to the lower part of the accommodating chamber, so that the steam in the accommodating chamber of the furnace body can be discharged both upward and downward. When the steam is discharged downward, the label at the bottom of the bottle can be well positioned and shrunk through the downward movement of the steam, thereby improving the shrinkage effect of the bottom of the label and improving the flatness of the label. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 This is a partial structural schematic diagram of an embodiment of a shrinking furnace provided by the utility model.

[0024] In the figure:

[0025] 1. First exhaust pipe; 2. Second exhaust pipe; 21. First pipe section; 22. Second pipe section; 3. Third exhaust pipe; 4. First flow regulating valve; 5. Second flow regulating valve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0028] Regarding the problem that the shrinkage of the bottom of the shrinking furnace is not perfect and the smile curve is not flat when producing special and special-shaped bottles, after research, it was found that the exhaust of the shrinking furnace is generally designed to be upward. The temperature of water vapor is higher than the temperature of the surrounding air, and the density of water vapor is less than the density of air. Therefore, water vapor will rise due to an upward buoyancy. The rise of steam is also the result of convection movement. In addition, the shrinking furnace is designed to exhaust only at the top. The steam moves upward, causing the label at the bottom of the bottle to be pulled up and shrunk, which cannot meet the requirements of the bottom shrinkage effect of special products, resulting in the bottom of the bottle not shrinking perfectly and the smile curve being uneven.

[0029] According to the above analysis, the utility model improves the structure of the shrinking furnace.

[0030] like Figure 1 As shown, in some embodiments of the shrinkage furnace provided by the utility model, the shrinkage furnace includes a furnace body and an exhaust device, a accommodating cavity is provided inside the furnace body, and the shrinkage film is shrunk in the accommodating cavity. The exhaust device includes a first exhaust pipe 1 and a second exhaust pipe 2 for exhausting steam in the accommodating cavity. The first exhaust pipe 1 is connected to the upper part of the accommodating cavity, and the second exhaust pipe 2 is connected to the lower part of the accommodating cavity.

[0031] The upper part of the accommodating cavity refers to the part located above the middle position of the accommodating cavity in the vertical direction as the boundary, and the lower part of the accommodating cavity refers to the part located below the middle position of the accommodating cavity in the vertical direction as the boundary.

[0032] By connecting the first exhaust pipe 1 to the upper part of the accommodating chamber and the second exhaust pipe 2 to the lower part of the accommodating chamber, the steam in the accommodating chamber of the furnace body can be discharged both upward and downward. When the steam is discharged downward, the label at the bottom of the bottle can be well positioned and shrunk through the downward movement of the steam, thereby improving the shrinkage effect of the bottom of the label and improving the flatness of the label.

[0033] In some embodiments, the first exhaust pipe 1 is connected to the top of the accommodating chamber, and the second exhaust pipe 2 is connected to the bottom of the accommodating chamber.

[0034] The top of the accommodating cavity refers to the portion adjacent to the top surface of the accommodating cavity in the vertical direction, which belongs to a portion of the upper part of the accommodating cavity, is the portion of the upper part of the accommodating cavity that is further away from the above boundary, and also includes the top surface of the accommodating cavity. The bottom of the accommodating cavity refers to the portion adjacent to the bottom surface of the accommodating cavity in the vertical direction, which belongs to a portion of the lower part of the accommodating cavity, is the portion of the lower part of the accommodating cavity that is further away from the above boundary, and also includes the bottom surface of the accommodating cavity.

[0035] By connecting the first exhaust pipe 1 to the top of the accommodating chamber and the second exhaust pipe 2 to the bottom of the accommodating chamber, the distance between the first exhaust pipe 1 and the second exhaust pipe 2 can be further increased, so that the exhaust position is closer to the top and bottom surfaces of the accommodating chamber, thereby more effectively positioning and shrinking the top and bottom of the bottle, thereby improving the shrinkage effect of the top and bottom of the bottle.

[0036] In some embodiments, the second exhaust pipe 2 includes a first pipe segment 21 and a second pipe segment 22. The first pipe segment 21 is a U-shaped pipe. Both end openings of the first pipe segment 21 are connected to the accommodating cavity. The second pipe segment 22 is connected to the portion of the first pipe segment 21 located between the two end openings.

[0037] By configuring the second exhaust pipe 2 to have two pipe sections, the structures of the two pipe sections can be conveniently configured separately as required. By configuring the first pipe section 21 to be U-shaped, the internal steam can enter the second exhaust pipe 2 through the two ports of the U-shaped pipe, which is beneficial to increase the air intake area of ​​the second exhaust pipe 2, improve the smoothness of steam discharge from the bottom of the accommodating cavity, and effectively improve the bottom contraction effect.

[0038] In some embodiments, the exhaust device further includes a first flow regulating valve 4 , and the first flow regulating valve 4 is disposed on the first exhaust pipe 1 .

[0039] By setting the first flow regulating valve 4, the flow of the first exhaust pipe 1 can be adjusted according to actual needs. By controlling the flow of the first exhaust pipe 1, the contraction speed and contraction effect can be controlled to achieve the purpose of gradual contraction.

[0040] The first flow regulating valve 4 can also be used to control the closing of the first exhaust pipe 1 and control whether the steam needs to be discharged through the first exhaust pipe 1 .

[0041] In some embodiments, the exhaust device further includes a second flow regulating valve 5 , which is disposed on the second exhaust pipe 2 .

[0042] By setting the second flow regulating valve 5, the flow of the second exhaust pipe 2 can be adjusted according to actual needs. By controlling the flow of the second exhaust pipe 2, the contraction speed and contraction effect can be controlled to achieve the purpose of gradual contraction.

[0043] The second flow regulating valve 5 can also be used to control the closing of the second exhaust pipe 2 and control whether the steam needs to be discharged through the second exhaust pipe 2.

[0044] By adjusting the flow rates of the first exhaust pipe 1 and the second exhaust pipe 2, the stability of the steam temperature can be effectively controlled, and at the same time it is beneficial to keep the furnace temperature constant.

[0045] In some embodiments, the exhaust device includes a third exhaust pipe 3 and a plurality of second exhaust pipes 2 , and the plurality of second exhaust pipes 2 are all connected to the third exhaust pipe 3 .

[0046] By providing the third exhaust pipe 3, multiple second exhaust pipes 2 can be connected to the same third exhaust pipe 3, and the gases can be uniformly discharged through the third exhaust pipe 3 or uniformly transported to a preset position for discharge together. The third exhaust pipe 3 has a gas collecting function.

[0047] In some embodiments, the third exhaust pipe 3 includes a pipe section extending in a horizontal direction. The plurality of second exhaust pipes 2 are all connected to the horizontal pipe section of the third exhaust pipe 3 .

[0048] By configuring the third exhaust pipe 3 to include a horizontally arranged pipe section, the arrangement of the third exhaust pipe 3 can be facilitated, and at the same time, it is convenient to connect a plurality of second exhaust pipes 2 extending substantially in the vertical direction.

[0049] In some embodiments, the third exhaust pipe 3 is in communication with the first exhaust pipe 1 .

[0050] By connecting the third exhaust pipe 3 with the first exhaust pipe 1, the steam exhausted through the second exhaust pipe 2 and the steam exhausted through the first exhaust pipe 1 can be combined and then uniformly discharged to a preset position, which is convenient for centralized discharge.

[0051] In some embodiments, the exhaust device further includes a connecting pipe, and the second exhaust pipe 2 is detachably connected to the accommodating cavity via the connecting pipe.

[0052] By providing a connecting pipe fitting and making the second exhaust pipe 2 detachably connected to the accommodating cavity through the connecting pipe fitting, the installation and removal of the second exhaust pipe 2 can be facilitated, and the cleaning, maintenance or replacement of the second exhaust pipe 2 can also be facilitated.

[0053] In some embodiments, the first exhaust pipe 1 is also detachably connected to the accommodating cavity via a connecting pipe to facilitate cleaning, maintenance or replacement of the first exhaust pipe 1 .

[0054] In some embodiments, the shrinkage furnace further includes a drain pipe and a switch valve. The drain pipe is communicated with the accommodating chamber. The drain pipe is configured to discharge condensed water in the accommodating chamber. The switch valve is disposed on the drain pipe.

[0055] By setting a drain pipe, the water generated by condensation in the receiving chamber can be discharged in time to prevent the water from staying and affecting the subsequent processes. By setting a switch valve, the drain pipe can be opened or closed as needed.

[0056] The following is combined with Figure 1 The structure and working process of an embodiment of the shrinking furnace provided by the utility model are described as follows:

[0057] like Figure 1 As shown, the shrinking furnace includes a furnace body and an exhaust device. The shrinking film (ie, the label) completes shrinkage in the accommodating cavity inside the furnace body, and the exhaust device is used to exhaust the steam in the accommodating cavity.

[0058] The exhaust device includes a first exhaust pipe 1 , a second exhaust pipe 2 , a third exhaust pipe 3 , a first flow regulating valve 4 and a second flow regulating valve 5 .

[0059] The first exhaust pipe 1 is connected to the top surface of the accommodating cavity, and the first exhaust pipe 1 includes a plurality of pipe sections extending upward in a vertical direction, and the vertical pipe sections are connected to the accommodating cavity. The plurality of vertical pipe sections are arranged in parallel. The first exhaust pipe 1 also includes a horizontal pipe section, and the plurality of vertical pipe sections are connected to the horizontal pipe section.

[0060] The second exhaust pipe 2 includes a first pipe section 21 and a second pipe section 22. The first pipe section 21 is U-shaped, and the two ends of the U-shaped pipe are connected to the lower side of the accommodating cavity. The two vertical sections of the U-shaped pipe extend downward from the two ends, and the two vertical sections are connected to the transverse section in the middle. The second pipe section 22 is connected to the transverse section of the U-shaped pipe. For the convenience of connection and arrangement, the second pipe section 22 includes multiple bends and guides the steam to move downward. Multiple second exhaust pipes 2 are arranged in parallel.

[0061] The third exhaust pipe 3 includes a horizontal pipe section, which is connected to the plurality of second exhaust pipes 2. The third exhaust pipe 3 includes a vertical pipe section connected to the horizontal pipe section, which is upwardly connected to the horizontal pipe section of the first exhaust pipe 1, so that the steam discharged through the first exhaust pipe 1 and the second exhaust pipe 2 are combined and then uniformly sent to a preset position.

[0062] The first exhaust pipe 1 is provided with a first flow regulating valve 4 , and the second exhaust pipe 2 is provided with a second flow regulating valve 5 .

[0063] In this embodiment, the steam in the accommodating cavity can be discharged not only upward but also downward by providing the first exhaust pipe 1 and the second exhaust pipe 2. The steam discharged through the second exhaust pipe 2 can move downward to position and shrink the bottom of the bottle, thereby improving the shrinkage effect of the bottom and helping to obtain a perfect smile curve.

[0064] Based on the above shrinking furnace, the utility model further provides a sleeve labeling machine, which includes the above shrinking furnace.

[0065] The positive technical effects of the shrinking furnace in the above-mentioned embodiments are also applicable to the sleeve labeling machine, which will not be described in detail here.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that without departing from the principle of the utility model, the specific implementation method of the utility model can still be modified or some technical features can be replaced by equivalents, and these modifications and equivalent replacements should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A shrinking furnace, characterized in that: include: A furnace body, wherein a containing cavity is provided inside the furnace body, and the shrink film shrinks in the containing cavity; and The exhaust device comprises a first exhaust pipe (1) and a second exhaust pipe (2) for exhausting steam in the accommodating chamber, wherein the first exhaust pipe (1) is connected to the upper part of the accommodating chamber, and the second exhaust pipe (2) is connected to the lower part of the accommodating chamber.

2. The shrinking furnace according to claim 1, characterized in that: The first exhaust pipe (1) is connected to the top of the accommodating chamber, and the second exhaust pipe (2) is connected to the bottom of the accommodating chamber.

3. The shrinking furnace according to claim 1, characterized in that: The second exhaust pipe (2) comprises a first pipe section (21) and a second pipe section (22); the first pipe section (21) is a U-shaped pipe; both end openings of the first pipe section (21) are connected to the accommodating cavity; and the second pipe section (22) is connected to a portion of the first pipe section (21) located between the two end openings.

4. The shrinking furnace according to claim 1, characterized in that: The exhaust device further comprises a first flow regulating valve (4), wherein the first flow regulating valve (4) is arranged on the first exhaust pipe (1); and / or the exhaust device further comprises a second flow regulating valve (5), wherein the second flow regulating valve (5) is arranged on the second exhaust pipe (2).

5. The shrinking furnace according to claim 1, characterized in that: The exhaust device comprises a third exhaust pipe (3) and a plurality of the second exhaust pipes (2), and the plurality of the second exhaust pipes (2) are all connected to the third exhaust pipe (3).

6. The shrinking furnace according to claim 5, characterized in that: The third exhaust pipe (3) comprises a pipe section extending in a horizontal direction.

7. The shrinking furnace according to claim 5, characterized in that: The third exhaust pipe (3) is in communication with the first exhaust pipe (1).

8. The shrinking furnace according to claim 1, characterized in that: The exhaust device also comprises a connecting pipe, and the second exhaust pipe (2) is detachably connected to the accommodating chamber via the connecting pipe.

9. The shrinking furnace according to claim 1, characterized in that: It also includes a drain pipe and a switch valve. The drain pipe is communicated with the accommodating cavity. The drain pipe is configured to discharge condensed water in the accommodating cavity. The switch valve is arranged on the drain pipe.

10. A labeling machine, characterized in that: It comprises the shrinking furnace as described in any one of claims 1 to 9.

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