Automatic vacuum packaging machine for prawn packaging

Abstract

The utility model discloses an automatic vacuum packaging machine for packaging prawns, which comprises a packaging machine main body, two accommodating cavities are symmetrically formed in the top of the packaging machine main body about the central axis of the packaging machine main body, and pressure sensors are embedded in the bottom walls of the accommodating cavities; the vacuumizing assembly is installed in the packaging machine body, and a vacuumizing hole communicating with the vacuumizing assembly is formed in the containing cavity; the weighing platform is embedded in the bottom wall of the accommodating cavity, and a plurality of weighing sensors are distributed at the bottom of the weighing platform so as to realize the weighing operation of the prawns. The detection assembly used for determining the position of the cover plate is designed between the containing cavity and the cover plate assembly, when the containing cavity is completely covered with the cover plate, the pressing rod is pressed on the pressure sensor, and the pressure sensor senses signals and transmits corresponding data to the control panel; and whether complete covering is achieved or not can be known according to data of signal lamps on the control panel, and the quality of follow-up vacuum packaging can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of food packaging, in particular to an automatic vacuum packaging machine for packaging prawns. Background Art

[0002] Vacuum packaging machines automatically extract the air from packaging bags and seal them after achieving a predetermined vacuum level. They are often used in the food industry because vacuum packaging protects food from oxidation, allowing for long-term preservation. With the development of society, vacuum packaging machines have become increasingly popular, and shrimp products are often vacuum-packed after processing.

[0003] For example, the Chinese utility model patent with the announcement number CN213832270U specifically discloses an automatic vacuum packaging machine for packaging shrimp products, which relates to the technical field of vacuum packaging machines and aims to solve the problem that the existing vacuum packaging machines for packaging shrimp products have low working efficiency and poor heat sealing effect, resulting in air leakage in the packaging bags.

[0004] In actual applications, the applicant found that two sets of vacuum-packing cavities are generally designed on both sides of the packaging machine, and then a rotatable cover is used to seal the cavities separately. In actual operation, the cover often does not fully fit the cavities, which affects the vacuum effect and thus the quality of the vacuum packaging. In addition, in order to ensure the consistency of the weight of the packaged shrimp, additional weighing equipment is required, which will increase the overall manufacturing cost and packaging time. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic vacuum packaging machine for prawn packaging in order to solve the above-mentioned problems.

[0006] The technical solution adopted by the utility model is as follows: an automatic vacuum packaging machine for packaging shrimps, comprising: a packaging machine main body, a top of which is symmetrically provided with two accommodating chambers about its central axis, the bottom walls of the accommodating chambers being embedded with pressure sensors; a vacuum pumping assembly mounted in the packaging machine main body, the accommodating chambers being provided with a vacuum pumping hole communicating with the vacuum pumping assembly; a weighing platform embedded in the bottom wall of the accommodating chamber, a plurality of weighing sensors distributed on the bottom of the weighing platform for implementing a weighing operation on the shrimps; a cover assembly comprising a cover and swing arms symmetrically arranged about the central axis of the packaging machine main body, the swing arms being in two groups, and upper and lower ends being rotatably connected to the packaging machine main body and the front and rear ends of the cover, respectively; the cover can be correspondingly mounted on any of the accommodating chambers via the swing arms, a downwardly provided pressure rod being provided inside the cover, and when the cover is mounted on the accommodating chamber, the pressure rod presses against the pressure sensor.

[0007] In a preferred embodiment, the vacuum pump assembly includes a vacuum pump and a three-way pipe, the vacuum end of the vacuum pump is connected to one of the interfaces of the three-way pipe, the remaining two interfaces of the three-way pipe are connected to the vacuum hole, and multiple groups of air holes are also opened on the side of the packaging machine body.

[0008] In a preferred embodiment, a filter screen is detachably installed in the vacuum hole, and an electrically controlled valve is provided in the pipe section of the three-way pipe connecting to the vacuum hole.

[0009] In a preferred embodiment, it also includes a heat sealing assembly, which includes an upper electric heat sealing strip and a lower electric heat sealing strip. The upper electric heat sealing strip and the lower electric heat sealing strip are respectively installed in the cover plate and the accommodating cavity. When the cover plate is covered on the accommodating cavity, the upper electric heat sealing strip and the lower electric heat sealing strip are arranged relative to each other.

[0010] In a preferred embodiment, a pressure rod is further provided on one side of the lower electric heating seal in the accommodating cavity, and a compression space is formed between the pressure rod and the accommodating cavity.

[0011] In a preferred embodiment, a silicone sealing ring is embedded in the bottom circumference of the cover plate.

[0012] In a preferred embodiment, self-locking universal wheels are provided at the four corners of the bottom of the packaging machine body, and a control panel is provided on the side of the packaging machine body along its length. The pressure sensor is controlled by the control panel, and several indicator lights are provided on the control panel.

[0013] In a preferred embodiment, a handle is provided on the side of the cover plate, and a transparent window is provided directly above the cover plate.

[0014] In a preferred embodiment, an air pressure sensor electrically connected to the control panel is further provided inside the cover.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. In the present invention, a detection assembly for determining the position of the cover is designed between the accommodating cavity and the cover assembly. When the cover is completely covered on the accommodating cavity, the pressure rod presses on the pressure sensor. The pressure sensor senses the signal and transmits the corresponding data to the control panel. The data of the signal light on the control panel can be used to know whether the cover is completely covered, thereby ensuring the quality of subsequent vacuum packaging.

[0017] 2. In the present invention, a weighing platform is integrated on the accommodating chamber, which can realize weighing, packaging and sealing operations on the vacuum packaging machine at the same time, thereby reducing the overall manufacturing cost and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the cross-sectional plan structure of the entire utility model;

[0020] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the internal structure of the cover plate in the present invention.

[0022] Markings in the figure: 1-packaging machine body, 2-self-locking universal wheel, 3-control panel, 4-ventilation hole, 5-weighing platform, 6-cover, 61-transparent window, 62-handle, 7-swing arm, 8-pressure sensor, 9-vacuum hole, 10-vacuum pump, 11-three-way pipe, 12-three-way pipe, 13-pressure rod, 14-lower electric heat seal, 15-pressure rod, 16-accommodation chamber, 17-air pressure sensor, 18-silicone sealing ring, 19-upper electric heat seal. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] Reference Figure 1-4An automatic vacuum packaging machine for shrimp packaging includes: a packaging machine body 1 (external power supply or AC power), a vacuum assembly, a weighing platform 5 and a cover assembly. The top of the packaging machine body 1 is symmetrically provided with two accommodating cavities 16 about its central axis. The bottom wall of the accommodating cavity 16 is embedded with a pressure sensor 8. The cover assembly includes a cover 6 and a swing arm 7 symmetrically arranged about the central axis of the packaging machine body 1. The swing arm 7 is in two groups, and the upper and lower ends are rotatably connected to the front and rear ends of the packaging machine body 1 and the cover 6 respectively. The cover 6 can be correspondingly covered on any accommodating cavity 16 through the swing arm 7. A pressure rod 15 is provided downwardly inside the cover 6. When the cover 6 is covered on the accommodating cavity 16, the pressure rod 15 Corresponding to the pressure sensor 8, a control panel 3 is also provided on the side of the packaging machine body 1 along its length direction. The pressure sensor is controlled by the control panel 3. Several indicator lights are provided on the control panel. A detection component for determining the position of the cover 6 is designed between the accommodating cavity 16 and the cover assembly. When the cover 6 is completely covered on the accommodating cavity 16, the pressure rod 15 presses on the pressure sensor 8. The pressure sensor 8 senses the signal and transmits the corresponding data to the control panel 3. It can be known whether it is completely covered according to the data of the signal light on the control panel 3, so as to ensure the quality of subsequent vacuum packaging. For example, when it is completely covered, the signal light shows green, otherwise it shows red.

[0025] Among them, two groups of accommodating chambers 16 are designed on the packaging machine body 1. While one group of accommodating chambers performs vacuum packaging operations, the accommodating chambers on the other side can realize weighing and loading and unloading operations, which can improve the overall work efficiency.

[0026] It should be mentioned that a number of elastic gaskets are provided between the swing arm 7 and the packaging machine body 1 and the cover plate 6, which can increase the damping effect between the swing arm 7 and the packaging machine body 1 and the cover plate 6 to ensure stability after adjustment.

[0027] Furthermore, a vacuum pumping assembly is installed in the packaging machine body 1, and a vacuum pumping hole 9 connected to the vacuum pumping assembly is provided in the accommodating chamber 16. The vacuum pumping assembly includes a vacuum pump 10 and a three-way pipe 12. The air extraction end of the vacuum pump 10 is connected to one of the interfaces of the three-way pipe 12, and the remaining two interfaces of the three-way pipe 12 are connected to the vacuum pumping hole 9. A plurality of air holes 4 are also provided on the side of the packaging machine body 1. The pipe section connecting the three-way pipe 12 and the vacuum pumping hole 9 is provided with an electric control valve 11. When the air is extracted from one of the accommodating chambers 16, an electric control valve 11 is provided. When vacuum is applied, the electric control valve 11 at the connection between the other accommodating chamber 16 and the three-way pipe 12 is closed, and the vacuum pump 10 is working at this time. Since a sealed space is formed between the cover plate 6 and the accommodating chamber 16, the interior can be evacuated to realize the subsequent vacuum packaging operation. The combination of the three-way pipe 12 and the vacuum pump 10 can also reduce an additional set of vacuum pumps 10, which is lower in cost. The vacuum pump 10 is a dual-purpose vacuum pump for extraction and filling. After the vacuum packaging is completed, air can be inflated into the interior to avoid the cover plate 6 being difficult to open due to the influence of negative pressure.

[0028] A filter screen can be detachably installed in the vacuum hole 9 , and the filter screen can prevent impurities from entering the vacuum pump 10 along the three-way pipe 12 and affecting the vacuum pump 10 .

[0029] Furthermore, the weighing platform 5 is embedded in the bottom wall of the accommodating chamber 16. Several weighing sensors are distributed at the bottom of the weighing platform 5 to realize the weighing operation of the shrimp. The weighing platform 5 is integrated on the accommodating chamber 16, and the weighing, packaging and sealing operations can be realized on the vacuum packaging machine at the same time, which can reduce the overall manufacturing cost and improve work efficiency.

[0030] The weighing sensor is electrically connected to the control panel 3 , and the control panel 3 is provided with a display panel for displaying data such as weight, sealing temperature, vacuum degree, etc.

[0031] Furthermore, it also includes a heat sealing component, which includes an upper electric heat seal strip 19 and a lower electric heat seal strip 14. The upper electric heat seal strip 19 and the lower electric heat seal strip 14 are respectively installed in the cover plate 6 and the accommodating cavity 16. When the cover plate 6 is covered on the accommodating cavity 16, the upper electric heat seal strip 19 and the lower electric heat seal strip 14 are arranged relative to each other. After vacuuming, the upper electric heat seal strip 19 and the lower electric heat seal strip 14 are powered on and work, and the heat sealing operation of the packaging bag is realized through the cooperation of the upper electric heat seal strip 19 and the lower electric heat seal strip 14.

[0032] The upper electric heat seal strip 19 and the lower electric heat seal strip 14 are additionally provided with temperature sensors.

[0033] Furthermore, a pressure rod 13 is provided on one side of the lower electric heat seal 14 in the accommodating cavity 16, and a compression space is formed between the pressure rod 13 and the accommodating cavity 16. Before vacuuming, the opening of the packaging bag is passed through the pressure rod 13 and placed on the lower electric heat seal 14, which can help define the position of the packaging bag.

[0034] Furthermore, a silicone sealing ring 18 is embedded in the bottom circumference of the cover plate 6. The silicone sealing ring 18 can achieve elastic sealing between the cover plate 6 and the accommodating cavity 16, thereby ensuring the sealing effect of the connection between the cover plate 6 and the accommodating cavity 16, thereby ensuring the subsequent vacuuming quality.

[0035] Furthermore, self-locking universal wheels 2 are provided at the four corners of the bottom of the packaging machine body 1, and the self-locking universal wheels 2 can be used to easily move the entire device to a desired position.

[0036] Furthermore, a handle 62 is provided on the side of the cover 6, and a transparent window 61 is provided directly above the cover 6. The handle 62 can be used to conveniently move the cover 6, and the transparent window 61 can be used to conveniently allow an operator to check the vacuum packaging status of the packaging bag.

[0037] Furthermore, an air pressure sensor 17 electrically connected to the control panel 3 is provided inside the cover 6. The air pressure sensor 17 can monitor the air pressure value of the sealed space formed between the cover 6 and the accommodating cavity 16 in real time, so as to know whether the sealed space is in a vacuum state.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic vacuum packaging machine for shrimp packaging, characterized in that: include: The packaging machine body has two accommodating cavities symmetrically formed on its top about its central axis, and pressure sensors are embedded in the bottom walls of the accommodating cavities; A vacuum pumping assembly is installed in the packaging machine body, and a vacuum pumping hole is provided in the accommodating cavity and is connected to the vacuum pumping assembly; A weighing platform is embedded in the bottom wall of the accommodating cavity, and a plurality of weighing sensors are distributed on the bottom of the weighing platform to realize the weighing operation of the shrimp; The cover plate assembly includes a cover plate and a swing arm symmetrically arranged with respect to the central axis of the packaging machine body. The swing arm is divided into two groups, and the upper and lower ends are rotatably connected to the packaging machine body and the front and rear ends of the cover plate respectively. The cover plate can be correspondingly covered on any of the accommodating cavities through the swing arm. A pressure rod is provided downwardly inside the cover plate. When the cover plate is covered on the accommodating cavity, the pressure rod is pressed against the pressure sensor.

2. The automatic vacuum packaging machine for shrimp packaging according to claim 1, characterized in that: The vacuum pump assembly includes a vacuum pump and a three-way pipe. The vacuum end of the vacuum pump is connected to one of the interfaces of the three-way pipe, and the remaining two interfaces of the three-way pipe are connected to the vacuum hole. Multiple groups of air holes are also opened on the side of the packaging machine body.

3. The automatic vacuum packaging machine for shrimp packaging according to claim 1, characterized in that: A filter screen can be detachably installed in the vacuum hole, and an electrically controlled valve is provided in the pipe section of the three-way pipe connected to the vacuum hole.

4. The automatic vacuum packaging machine for shrimp packaging according to claim 1, characterized in that: It also includes a heat sealing assembly, which includes an upper electric heat sealing strip and a lower electric heat sealing strip. The upper electric heat sealing strip and the lower electric heat sealing strip are respectively installed in the cover plate and the accommodating cavity. When the cover plate is placed on the accommodating cavity, the upper electric heat sealing strip and the lower electric heat sealing strip are arranged relative to each other.

5. The automatic vacuum packaging machine for shrimp packaging according to claim 1, characterized in that: A pressure rod is further provided on one side of the lower electric heating seal in the accommodating cavity, and a compression space is formed between the pressure rod and the accommodating cavity.

6. The automatic vacuum packaging machine for shrimp packaging according to claim 1, characterized in that: A silicone sealing ring is embedded on the bottom peripheral surface of the cover plate.

7. The automatic vacuum packaging machine for shrimp packaging according to claim 1, characterized in that: The four corners of the bottom of the packaging machine body are further provided with self-locking universal wheels. The side of the packaging machine body along its length direction is further provided with a control panel. The pressure sensor is controlled by the control panel, and the control panel is provided with several indicator lights.

8. The automatic vacuum packaging machine for shrimp packaging according to claim 1, characterized in that: A handle is provided on the side of the cover plate, and a transparent window is provided just above the cover plate.

9. The automatic vacuum packaging machine for shrimp packaging according to claim 1, characterized in that: An air pressure sensor electrically connected to the control panel is also provided inside the cover plate.

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