Sealing device for tea packaging

Abstract

The utility model discloses a sealing device for tea packaging, which comprises a support frame, a sealing assembly is arranged on the support frame, the sealing assembly comprises a first piston rod, the first piston rod is arranged at the middle position of the top side of the support frame in a sliding and penetrating manner, and a piston cylinder is arranged at the top of the first piston rod in a sliding and sleeving manner; and the bottom end of the piston cylinder is fixedly connected with the supporting frame. When the improved sealing device for tea packaging is used, an operator places a tea packaging opening in the supporting frame, so that the sealing mechanism is driven by the first piston rod to automatically complete heating and sealing operation of the tea packaging opening, inert gas can be injected into the packaging through the buffering mechanism and the gas injection mechanism, the tea packaging is supported, and the sealing device is convenient to use. The device is simple in structure and convenient to operate, and due to supporting of inert gas in packages, the situation that the packages are extruded, tea leaves are damaged and the condition of the tea leaves is affected is almost avoided in the tea leaf boxing and stacking process.

Description

Technical Field

[0001] The utility model relates to the technical field of tea packaging sealing devices, in particular to a sealing device for tea packaging. Background Technique

[0002] Tea originated in China and was first used as a sacrifice. However, since the late Spring and Autumn Period, it has been used as food, developed into a medicinal use in the mid-Western Han Dynasty, and only developed into a high-class court beverage in the late Western Han Dynasty. In the process of tea production, in order to make tea better transported and sold, a packaging machine is generally used for tea packaging.

[0003] For example, a sealing device for tea packaging with the publication number of CN214608416U includes a sealing device body. The sealing device body includes a U-shaped support frame. The bottom of the support frame is fixedly connected with a support plate. The top of the support frame is fixedly connected with a cylinder, and the movable end of the cylinder passes through the top of the support frame. The movable end of the cylinder is connected with a movable support plate. An upper heating rod is arranged on the support plate, and a lower heating rod is arranged on the movable support plate. The upper heating rod cooperates with the lower heating rod. One side of the support frame is rotatably connected with a storage box through a connecting rod. The upper end of the storage box is open. At least two baffle plates are slidably connected in the storage box. A chute is arranged on one side of the storage box. One side of the baffle plate close to the chute is connected with a bolt, and the bolt passes through the chute and extends to the outside, achieving the purpose of sealing multiple packaging bags at one time.

[0004] When the existing tea packaging machine packs tea, it generally heats and clamps the tea packaging through two heating plates to perform hot melting fixation of the packaging bag. Moreover, some tea finished products are in the shape of leaves or strips and are relatively brittle by themselves. After the tea packaging is completed, as the packaged tea is stacked and packed in boxes, the tea in the packaging may be damaged due to extrusion, affecting the appearance of the tea. Content of the Utility Model

[0005] The purpose of the utility model is to provide a sealing device for tea packaging, so as to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A sealing device for tea packaging, including a support frame, a sealing component is arranged on the support frame. The sealing component includes a first piston rod, and the first piston rod is slidably penetrated and installed at the middle position on the top side of the support frame. A piston cylinder is slidably sleeved on the top of the first piston rod, and the bottom end of the piston cylinder is fixedly connected with the support frame. A sealing mechanism is arranged on the bottom side of the first piston rod. An air injection mechanism is arranged behind the sealing mechanism. Buffer mechanisms are arranged on both the left and right sides of the sealing mechanism.

[0007] Preferably, the sealing mechanism includes a limiting plate. Both ends of the support frame slide through the limiting plate, and the bottom end of the first piston rod is fixedly connected to the limiting plate. A support plate is provided below the limiting plate, and both ends of the support plate are fixedly connected to the inner wall of the support frame. Sealing heating strips are fixedly installed at the front end of the bottom side of the support plate and the front end of the top side of the limiting plate.

[0008] Preferably, the air injection mechanism includes a pressure limiting valve. A round hole is opened in the first piston rod, and the pressure limiting valve is fixedly installed in the top opening of the round hole. An interface is connected and installed at the top end of the piston cylinder. A guiding hole is opened at the middle position of the rear side of the limiting plate. A second piston rod is slidably installed in the guiding hole. A diversion shell with an L-shaped shape is provided at the rear side of the limiting plate, and the driving end of the second piston rod is inserted into the diversion shell and fixedly connected to the diversion shell. The inside of the guiding hole is connected to the inside of the round hole through a plurality of connecting pipes, and the bottom end of each connecting pipe is located at the rear side of the plug plate of the second piston rod.

[0009] Preferably, a plurality of connecting holes are opened in the second piston rod from left to right, and the distance between adjacent two connecting holes is equal. One end opening of the connecting hole communicates with the inside of the diversion shell, and the other end opening of the connecting hole communicates with the inside of the guiding hole.

[0010] Preferably, soft strips are fixedly installed at the rear end of the bottom side of the limiting plate and the rear end of the top side of the support plate. The inside of the soft strip is hollow and filled with air. The distance between the two soft strips is less than the distance between the two sealing heating strips.

[0011] Preferably, the buffering mechanism includes two support rods with an I-shaped cross-sectional shape. Two chutes with a T-shaped cross-sectional shape are oppositely opened on the support plate. The bottom of the support rod is inserted into the corresponding chute and slidably connected to the inner wall of the corresponding chute. A spring is wound around the outer peripheral side of the support rod, and both ends of the spring are fixedly connected to the support plate and the top end of the corresponding support rod respectively. The two chutes are oppositely arranged on the left and right sides of the sealing heating strip.

[0012] The utility model has the following beneficial effects:

[0013] When the improved tea packaging sealing device is in use, the operator places the opening of the tea packaging in the support frame, so as to drive the sealing mechanism through the first piston rod to automatically complete the heating and sealing operation of the opening of the tea packaging. At the same time, inert gas can be injected into the packaging through the buffering mechanism and the air injection mechanism to support the tea packaging. The device has a simple structure and is convenient to operate. And due to the support of the inert gas in the packaging, during the process of stacking the tea in boxes, the packaging is hardly squeezed to cause damage to the tea and affect the appearance of the tea. Description of the Drawings

[0014] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the description of the embodiments. Obviously, the attached drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these drawings.

[0015] Figure 1 Overall schematic diagram of the present utility model;

[0016] Figure 2 Internal structure schematic diagram of the piston cylinder and the limiting plate of the present utility model;

[0017] Figure 3 For the present utility model Figure 2 Front view of the limiting plate and the diversion shell in the present utility model;

[0018] Figure 4 Internal structure schematic diagram of the support plate of the present utility model.

[0019] In the figure: 1, support frame; 2, sealing assembly; 21, first piston rod; 22, piston cylinder; 3, sealing mechanism; 31, limiting plate; 32, support plate; 33, sealing heating strip; 4, gas injection mechanism; 41, round hole; 42, pressure limiting valve; 43, interface; 44, guiding hole; 45, second piston rod; 46, diversion shell; 47, connecting hole; 48, soft strip; 49, connecting pipe; 5, buffer mechanism; 51, sliding groove; 52, support rod; 53, spring. Specific embodiments

[0020] In order to make the technical solutions and advantages of the present utility model clearer and more understandable, the following further details the present utility model in combination with the attached drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] The present utility model provides a technical solution: Referring to Figures 1-4 , a sealing device for tea packaging disclosed by the present utility model includes a support frame 1, a sealing assembly 2 is provided on the support frame 1, the sealing assembly 2 includes a first piston rod 21, the first piston rod 21 slidably penetrates and is installed at the middle position of the top side of the support frame 1, a piston cylinder 22 is slidably sleeved on the top of the first piston rod 21, and the bottom end of the piston cylinder 22 is fixedly connected to the support frame 1. A sealing mechanism 3 is provided on the bottom side of the first piston rod 21, a gas injection mechanism 4 is provided at the rear side of the sealing mechanism 3, and a buffer mechanism 5 is provided on both the left and right sides of the sealing mechanism 3.

[0022] In this embodiment, when the improved sealing device for tea packaging is used, the operator inserts the open end of the tea packaging into the sealing mechanism 3, and then the first piston rod 21 drives the sealing mechanism 3 to close to complete the heating and sealing operation of the opening of the tea packaging. During the closing process of the sealing mechanism 3, inert gas is injected into the packaging through the buffer mechanism 5 and the gas injection mechanism 4 to prop up the tea packaging to improve the pressure resistance of the tea packaging.

[0023] In a further preferred embodiment of the present invention, Figure 1 As shown, the sealing mechanism 3 includes a limit plate 31, both ends of the support frame 1 slide through the limit plate 31, and the bottom end of the first piston rod 21 is fixedly connected to the limit plate 31, a support plate 32 is provided below the limit plate 31, and both ends of the support plate 32 are fixedly connected to the inner wall of the support frame 1, and the front end of the bottom side of the support plate 32 and the front end of the top side of the limit plate 31 are fixedly installed with a sealing heating strip 33;

[0024] In this embodiment, when placing the opening end of the tea package, the operator manually or through the loading device places the opening end of the tea package on the sealing heating strip 33 below, and then the operator starts the device. First, the gas injection device continuously and slowly injects nitrogen into the piston cylinder 22, and gradually pushes the first piston rod 21 out of the piston cylinder 22, thereby pushing the limit plate 31 toward the support plate 32, and the two sealing heating strips 33 clamp and limit the opening end of the tea package from both sides of the tea package opening, so that the opening end of the tea package is stably attached together, and then the sealing heating strips 33 perform hot-melt fixing treatment on the specific position of the tea package.

[0025] In a further preferred embodiment of the present invention, Figure 2 As shown, the gas injection mechanism 4 includes a pressure-limiting valve 42, a circular hole 41 is opened in the first piston rod 21, and the pressure-limiting valve 42 is fixedly installed in the top opening of the circular hole 41, the top of the piston cylinder 22 is connected and equipped with an interface 43, a guide hole 44 is opened at the middle position of the rear side of the limit plate 31, and a second piston rod 45 is slidably installed in the guide hole 44, a guide shell 46 with an L-shaped arrangement is provided on the rear side of the limit plate 31, and the driving end of the second piston rod 45 is inserted into the guide shell 46 and fixedly connected to the guide shell 46, the interior of the guide hole 44 is connected to the interior of the circular hole 41 through a plurality of connecting pipes 49, and the bottom end of each connecting pipe 49 is located on the rear side of the plug plate of the second piston rod 45;

[0026] In this embodiment, when the gas injection device injects nitrogen into the piston cylinder 22, due to the obstruction of the pressure limiting valve 42, the nitrogen injected into the piston cylinder 22 first pushes the first piston rod 21 downward, and then after the pressure difference of the pressure limiting valve 42 reaches the threshold, the excess nitrogen in the piston cylinder 22 passes through the pressure limiting valve 42 and flows into the circular hole 41, and the operator does not need to perform other operations;

[0027] It should be noted that the above-mentioned interface 43 is connected to a gas injection device for controlling the nitrogen content in the control piston cylinder 22 through a gas pipeline.

[0028] In a further preferred embodiment of the present invention, as Figure 2 and Figure 3 shown, a plurality of connection holes 47 are provided in the second piston rod 45 from left to right, and the distance between adjacent two connection holes 47 is equal. One end opening inside of the connection hole 47 is communicated with the inside of the diversion shell 46, and the other end opening inside of the connection hole 47 is communicated with the inside of the guiding hole 44;

[0029] In this embodiment, after the above-mentioned nitrogen flows into the round hole 41, it can flow into the round hole 41 through the connecting pipe 49. And because the amount of flowing gas in the connection hole 47 is limited, the air pressure in the round hole 41 gradually increases, thereby pushing the second piston rod 45 into the round hole 41, and finally driving the exhaust end of the diversion plate to insert into the opening of the tea package;

[0030] As the nitrogen flows into the round hole 41, part of the nitrogen flows into the diversion shell 46 through the connection hole 47 and is discharged from the exhaust end of the diversion shell 46, blowing on the opening end of the tea package. Thus, the opening of the tea package is pushed to both sides by the air flow, so that the opening of the tea package can open a larger opening, and the diversion shell 46 can be more easily inserted into the opening of the tea package.

[0031] In a further preferred embodiment of the present invention, as Figure 1 shown, soft strips 48 are fixedly installed at the rear end of the bottom side of the limiting plate 31 and the rear end of the top side of the supporting plate 32, and the inside of the soft strip 48 is hollow and filled with air. The distance between the two soft strips 48 is smaller than the distance between the two sealing heating strips 33;

[0032] In this embodiment, during the process of the diversion shell 46 inserting into the opening of the tea package, due to the mutual contact between the diversion shell 46 and the soft strip 48, the middle part of the soft strip 48 can undergo adaptive deformation to leave a space for the diversion shell 46 to pass through between the soft strips 48.

[0033] In a further preferred embodiment of the present invention, as Figure 1 and Figure 4 shown, the buffer mechanism 5 includes two support rods 52 with an I-shaped cross-section. Two chutes 51 with a T-shaped cross-section are oppositely provided on the supporting plate 32, and the bottom of the support rod 52 is inserted into the corresponding chute 51 and is slidably connected with the inner wall of the corresponding chute 51. A spring 53 is wound around the outer peripheral side of the support rod 52, and both ends of the spring 53 are fixedly connected to the supporting plate 32 and the top end of the corresponding support rod 52 respectively. The two chutes 51 are relatively arranged on the left and right sides of the sealing heating strip 33;

[0034] In this embodiment, during the downward movement of the limiting plate 31, after the limiting plate 31 comes into contact with the support plate 32, due to the mutual resistance between the limiting plate 31 and the support rod 52, the subsequent downward movement of the limiting plate 31 drives part of the support rod 52 to synchronously retract into the chute 51 and compress the spring 53. And due to the push of the support rod 52 on the limiting plate 31, the air pressure in the piston cylinder 22 gradually increases, thereby making the pressure difference between the two ends of the pressure limiting valve 42 gradually increase;

[0035] After the pressure difference between the two ends of the pressure limiting valve 42 reaches the threshold value, the two soft strips 48 clamp the packaging opening from the upper and lower sides of the packaging opening, so that the packaging opening is closed, avoiding the overflow of nitrogen gas injected into the packaging.

[0036] Working principle: When the improved tea packaging sealing device is in use, the operator manually or through the feeding device places the opening end of the tea packaging on the lower soft strip 48. Then the operator starts the device. First, the gas injection device continuously and slowly injects nitrogen gas into the piston cylinder 22. Due to the blockage of the pressure limiting valve 42, the nitrogen gas injected into the piston cylinder 22 first pushes the first piston rod 21 downward, thereby driving the limiting plate 31 to move downward until the limiting plate 31 comes into contact with the support rod 52. At this time, due to the mutual resistance between the limiting plate 31 and the support rod 52, the subsequent downward movement of the limiting plate 31 drives part of the support rod 52 to synchronously retract into the chute 51 and compress the spring 53. And due to the push of the support rod 52 on the limiting plate 31, the air pressure in the piston cylinder 22 gradually increases, thereby making the pressure difference between the two ends of the pressure limiting valve 42 gradually increase;

[0037] It should be noted that during the movement of the limiting plate 31, due to the mutual resistance between the limiting plate 31 and the support frame 1, the limiting plate 31 moves in a linear up and down trajectory;

[0038] After the pressure difference between the two ends of the pressure limiting valve 42 reaches the threshold value, the excess nitrogen gas in the piston cylinder 22 passes through the pressure limiting valve 42 and flows into the round hole 41. At the same time, the two soft strips 48 clamp the packaging opening from the upper and lower sides of the packaging opening, so that the packaging opening is closed. And the nitrogen gas flowing into the round tube flows into the round groove through the connecting pipe 49. And due to the limited amount of flowing gas in the connecting hole 47, the air pressure in the round hole 41 gradually increases, and then pushes the second piston rod 45 into the round hole 41, and finally drives the exhaust end of the diversion plate to insert into the opening of the tea packaging;

[0039] It should be noted that as the nitrogen gas flows into the round hole 41, part of the nitrogen gas flows into the diversion shell 46 through the connecting hole 47 and is discharged from the exhaust end of the diversion shell 46, blowing on the opening end of the tea packaging. Thus, the opening of the tea packaging is pushed to both sides by the air flow, so that the opening of the tea packaging can open a larger opening, making it easier for the diversion shell 46 to insert into the tea packaging opening;

[0040] It should be noted that, during the process of inserting the guide shell 46 into the opening of the tea packaging, due to the mutual interference between the guide shell 46 and the soft strip 48, the middle part of the soft strip 48 can be adaptively deformed, leaving space for the guide shell 46 to pass through the soft strip 48;

[0041] After the guide shell 46 is inserted into the opening of the tea package, nitrogen is continuously injected into the tea package, and because the opening of the tea package is closed, the nitrogen is trapped in the package. After the tea package is filled with a specific amount of nitrogen, the gas injection device temporarily increases the amount of gas injected. Since the gas pressure in the piston cylinder 22 passes through the pressure limiting valve 42, the gas pressure increases accordingly, thereby continuing to push the limit plate 31 downward until the sealing heating strip 33 clamps and limits the opening of the tea package from both sides of the opening. At this time, the opening of the tea package is completely closed, and then the sealing heating strip 33 heats and seals the opening of the tea package, and the sealing operation of the opening of the tea package is completed.

[0042] After the tea package sealing operation is completed, the gas injection device extracts the nitrogen in the piston cylinder 22 and the guide hole 44, thereby pulling the first piston rod 21 and the second piston rod 45 to reset, and at the same time the spring 53 pushes the support rod 52 to move up and reset. At this time, the operator can directly take the tea package out of the support frame 1. The sealing operation of the tea package can be continuously performed according to the above repeated operations.

[0043] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sealing device for tea packaging, comprising a support frame (1), characterized in that: A sealing component (2) is provided on the support frame (1). The sealing component (2) includes a first piston rod (21) which slidably penetrates through and is installed at the middle position on the top side of the support frame (1). A piston cylinder (22) is slidably sleeved on the top of the first piston rod (21), and the bottom end of the piston cylinder (22) is fixedly connected to the support frame (1). A sealing mechanism (3) is provided on the bottom side of the first piston rod (21), an air injection mechanism (4) is provided at the rear side of the sealing mechanism (3), and a buffer mechanism (5) is jointly provided on the left and right sides of the sealing mechanism (3).

2. The sealing device for tea packaging according to claim 1, wherein: The sealing mechanism (3) includes a limiting plate (31). Both ends of the support frame (1) slidably penetrate through the limiting plate (31), and the bottom end of the first piston rod (21) is fixedly connected to the limiting plate (31). A support plate (32) is provided below the limiting plate (31), and both ends of the support plate (32) are fixedly connected to the inner wall of the support frame (1). Sealing heating strips (33) are fixedly installed at the front end of the bottom side of the support plate (32) and the front end of the top side of the limiting plate (31).

3. The sealing device for tea packaging according to claim 2, characterized in that: The air injection mechanism (4) includes a pressure limiting valve (42). A circular hole (41) is formed in the first piston rod (21), and the pressure limiting valve (42) is fixedly installed in the top opening of the circular hole (41). An interface (43) is connected and installed at the top end of the piston cylinder (22). A guiding hole (44) is formed at the middle position of the rear side of the limiting plate (31). A second piston rod (45) is slidably installed in the guiding hole (44). A diversion shell (46) with an L-shaped configuration is provided at the rear side of the limiting plate (31), and the driving end of the second piston rod (45) is inserted into the diversion shell (46) and fixedly connected to the diversion shell (46). The inside of the guiding hole (44) is connected and communicated with the inside of the circular hole (41) through a plurality of connecting pipes (49), and the bottom end of each connecting pipe (49) is located at the rear side of the plug plate of the second piston rod (45).

4. A sealing device for tea packaging according to claim 3, characterized in that: A plurality of connecting holes (47) are formed in the second piston rod (45) from left to right, and the distance between adjacent two connecting holes (47) is equal. One end opening of the connecting hole (47) is communicated with the inside of the diversion shell (46), and the other end opening of the connecting hole (47) is communicated with the inside of the guiding hole (44).

5. The sealing device for tea packaging according to claim 4, wherein: Soft strips (48) are fixedly installed at the rear end of the bottom side of the limiting plate (31) and the rear end of the top side of the support plate (32). The inside of the soft strip (48) is hollow and filled with air. The distance between the two soft strips (48) is smaller than the distance between the two sealing heating strips (33).

6. The sealing device for tea packaging according to claim 5, characterized in that: The buffer mechanism (5) includes two support rods (52) with an I-shaped cross-section. Two chutes (51) with a T-shaped cross-section are oppositely formed on the support plate (32). The bottom of the support rod (52) is inserted into the corresponding chute (51) and is slidably connected to the inner wall of the corresponding chute (51). A spring (53) is wound around the outer peripheral side of the support rod (52), and both ends of the spring (53) are fixedly connected to the support plate (32) and the top end of the corresponding support rod (52) respectively. The two chutes (51) are oppositely arranged on the left and right sides of the sealed heating strip (33).

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