Vacuum sealer with characters and sealing method thereof

Abstract

The present application belongs to the technical field of vacuum sealing machine products, and specifically discloses a vacuum sealing machine with characters, which comprises a base and an upper cover, the upper cover is movably hinged to one side of the base, a vacuum pump, a control circuit board and a power cord are arranged on the base, corresponding positions of the adhering surfaces of the base and the upper cover when closed are provided with upper and lower vacuum cavities, sealing rubber rings are arranged around the upper and lower vacuum cavities, respectively, a sealing heating sheet assembly is arranged on the front side of the base, a heat sealing strip is arranged at the corresponding position of the front side of the upper cover, a plurality of groups of character bands and character band driving devices are arranged in the upper cover / base, and elastic character hot stamping devices are arranged at the corresponding positions in the base / upper cover. The vacuum sealing machine has the advantages of simple structure, convenient use, light and compact appearance, clear characters and traces, high heating efficiency, synchronous completion of sealing and character hot stamping, easy disassembly without additional tools, convenient cleaning and maintenance, long service life, good stability, and low manufacturing cost.

Description

Technical Field

[0001] This invention belongs to the technical field of vacuum sealing machine products, specifically relating to a character vacuum sealing machine and its sealing method. Background Technology

[0002] Currently, vacuum sealing machines use a vacuuming device to vacuum-pack bags, and then use a heat-sealing process to heat-seal the bag opening. By using a vacuum sealing machine, food can be preserved in the vacuum-packed bag for a long time to maintain the vacuum level and achieve the food preservation performance.

[0003] In existing technologies, vacuum preservation machines generally need to print production dates and batch numbers, otherwise users cannot accurately know the production date and batch number of the food in the preservation bag, cannot clearly know whether the product has expired, and cannot trace the product accordingly.

[0004] To address this, some researchers have developed a printing wheel structure for printing characters on food storage bags. However, the printing process requires a printing wheel with protruding numbers, which is costly to manufacture and prone to damage after prolonged use. Replacement or repair costs are also high. Furthermore, the printing wheel method is structurally complex and requires a large three-dimensional space for installation, thus increasing the overall size of the machine. This contradicts the current design philosophy of lightweight and compact small household appliances and fails to adequately meet users' needs for ease of use and miniaturized structures.

[0005] Therefore, it is urgent to develop a multifunctional vacuum sealing machine with characters that is simple in structure, easy to use, lightweight and compact, and can handle large sealing areas and heat-printed characters. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a vacuum sealing machine with characters. This vacuum sealing machine has a simple structure, is easy to use and has a compact and lightweight appearance. At the same time, it can heat print various characters, has high heating efficiency, large sealing area, good sealing effect, good stability and low manufacturing cost.

[0007] To achieve the above-mentioned technical objectives, the present invention is implemented according to the following technical solution: The present invention discloses a vacuum sealing machine with characters, comprising a base and a top cover. The top cover is movably hinged to one side of the base. The base is provided with a vacuum pump, a control circuit board, and a power cord. The vacuum pump is electrically connected to the control circuit board. When the base and the top cover are closed, corresponding positions of the contact surfaces are provided with an upper vacuum chamber and a lower vacuum chamber. Sealing rings are provided around the upper and lower vacuum chambers respectively. A sealing heating element assembly electrically connected to the control circuit board is provided on the front side of the base. A heat sealing strip that cooperates with the heating element assembly is provided at a corresponding position on the front side of the top cover. Several sets of character strips and a character strip driving device for driving the character strips are provided in or near the upper and lower vacuum chambers inside the top cover / base. Several protruding characters are arranged on the front side of the character strips. An elastic character heat printing device for heat printing the characters of the character strips onto the plastic bag to be sealed is provided at a corresponding position on the base / top cover.

[0008] As a further improvement to the above technology, the back of the character strip is a continuous transmission rack, and the interior of the character strip is embedded with several strong fiber ropes to prevent stretching along its extension direction.

[0009] As a further improvement to the above technology, the character tape driving device includes a left mounting bracket, a right mounting bracket, and several sets of character tape adjustment devices for mounting different character tapes and adjusting the characters to be heat-printed on the character tapes respectively.

[0010] As a further improvement to the above technology, the character belt adjustment device includes a first character belt adjustment device and a second character belt adjustment device. The first character belt adjustment device includes a first knob, a first gear-sleeve transmission pair, a first character belt, and a plurality of first bushings for tensioning the first character belt. The first gear-sleeve transmission pair includes a first gear mounted on the left bracket and two large gear sleeves mounted on the front and rear sides of the right bracket. The first character belt is wound and tensioned on the first gear, the two large gear sleeves, and the two first bushings. The first gear and the first knob are both fixed on the mounting bracket, located on the left and right sides of the left mounting bracket and coaxially installed. The right bracket has a mounting shaft on its inner side, and the bushings are sleeved on the mounting shaft. The second character belt adjustment device includes a second knob, a second gear and sleeve transmission pair, a second character belt with protruding characters, and a second bushing. The second gear and sleeve transmission pair includes a second gear mounted on the left bracket and a small toothed sleeve mounted on the right bracket. The second character belt is wound and tensioned on the second gear, the small toothed sleeve, and the second bushing. The second gear and the second knob are both mounted on the left mounting bracket, located on the left and right sides of the left mounting bracket and coaxially installed. The right bracket has a mounting shaft on its inner side, and the second bushing is sleeved on the mounting shaft.

[0011] As a further improvement to the above technology, the first character strip and the second character strip are made of high-temperature resistant elastic material, with prominent characters arranged on the front and different numbers arranged in sequence.

[0012] As a further improvement to the above technology, the first character strip has 1-31 date numbers arranged in sequence on the front, and the second character strip has 1-12 month numbers arranged in sequence on the front.

[0013] In addition, it can also be other numerical characters, such as code numbers, or graphic codes of patterns, which can be selected according to actual needs.

[0014] As a further improvement to the above technology, the elastic character heat printing device includes an aluminum bracket, on which a character heating element for heat sealing characters and a high-temperature resistant thermoplastic strip covering the character heating element are sequentially installed. The aluminum bracket has left and right bracket ears on both sides, and two compression spring receiving cavities containing compression springs are symmetrically provided at the bottom of the aluminum bracket.

[0015] As a further improvement to the above technology, the sealing heating element assembly is directly electrically connected to the mains voltage terminal of the control circuit board.

[0016] This invention also discloses a vacuum sealing method for the aforementioned vacuum sealing machine with characters, the steps of which are: (1) First, align the opening of the plastic bag to be sealed with the opening of the vacuum sealer; (2) Next, align the position of the characters to be sealed on the plastic bag with the character device and the flexible character heat printing device, and manually turn the knob to adjust the characters to be heat printed on the character device to the upward center position; (3) Finally, close the top cover of the vacuum sealing machine, turn on the power, and complete the sealing work at the sealing point and the character heat printing work.

[0017] Compared with the prior art, the beneficial effects of the present invention are: (1) In this invention, the character is printed by using a character tape and a flexible character heat printing device. Since multiple characters are set by the character tape and the character tape can be in multiple sets, compared with the traditional character wheel, the character tape can be installed in a narrow space, which makes the entire sealing machine smaller in structure. The character tape is lighter than the character wheel, which makes the sealing machine lighter and more convenient for daily use. (2) In this invention, the character tape and character tape driving device, as well as the elastic character heat printing device, can be installed interchangeably in the vacuum chamber of the upper cover or base of the vacuum sealing machine, or arranged in the vicinity of the vacuum chamber. In addition, the character tape and character tape driving device are designed as a whole and can be directly removed without the need for disassembly by auxiliary tools for maintenance or cleaning. They are convenient to use and have a long service life. (3) In this invention, an elastic character heat printing device is used. The compression spring has a better elastic recovery force, and the upper and lower vacuum chambers are equipped with sealing rings around them. This ensures that the code tape can be better attached to the food storage bag to be printed during heat printing. It also allows for more flexible control of the uniform adhesion pressure during heat printing, ensuring a uniform and consistent character heat printing effect. (4) In this invention, the character strip is relatively long and can be arranged with multiple number groups on its front side, such as 1-31 numbers to display the month, 1-12 month numbers, or other characters, such as trademarks, graphics, or other texts. It can be selected according to actual needs and has a wide range of applications. Attached Figure Description

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments: Figure 1 The vacuum sealing machine with characters described in this invention is a three-dimensional type. Figure 1 (Open); Figure 2 The vacuum sealing machine with characters described in this invention is a three-dimensional type. Figure 2 (Flip it over to see the bottom); Figure 3 The character device in this invention is three-dimensional. Figure 1 ; Figure 4 The above Figure 3 A schematic diagram of the decomposition process; Figure 5 The character device in this invention is three-dimensional. Figure 2 ; Figure 6 This is a schematic diagram of the first character strip structure in the invention; Figure 7 The above Figure 6 A partial sectional 3D view; Figure 8 This is a schematic diagram of the second character strip structure in this invention; Figure 9 This is a top view of the flexible character heat printing device of the present invention; Figure 10 The above Figure 9 AA sectional view. Detailed Implementation

[0019] like Figure 1 , Figure 2 As shown, the present invention discloses a vacuum sealing machine with characters, comprising an upper cover 1 and a base 2. The upper cover 1 and the base 2 are hinged together on one side by a hinge 3. The base 2 is provided with a vacuum pump 4, a control circuit board 10 and a power cord. The vacuum pump 4 is electrically connected to the control circuit board 10. When the base 2 and the upper cover 1 are closed, the contact surfaces are provided with an upper vacuum chamber 5 and a lower vacuum chamber 6 at corresponding positions. Sealing rings 20 are provided around the upper vacuum chamber 5 and the lower vacuum chamber 6 respectively. A sealing heating element assembly 7 electrically connected to the control circuit board 10 is provided on the front side of the base 2. A heat sealing strip 30 that cooperates with the sealing heating element assembly 7 is provided at a corresponding position on the front side of the upper cover 1. The lower vacuum chamber 6 of the base 2 is provided with two sets of character strips, namely a first character strip 100 and a second character strip 200, and a character strip driving device 8 that independently drives the movement of the two sets of character strips 100 and 200. An elastic character heat printing device 9 for heat sealing the character device 8 is provided at a corresponding position inside the upper cover 1.

[0020] like Figures 3 to 5 As shown, the character tape driving device 8 includes a left mounting bracket 81, a right mounting bracket 82, a first character tape adjustment device 83, and a second character tape adjustment device 84. The first character tape adjustment device 83 includes a first knob 831, a first gear and sleeve transmission pair, and several first bushings 833. The first gear and sleeve transmission pair includes a first gear 834 mounted on the left mounting bracket 81 and two large gear sleeves 832 mounted on the front and rear sides of the mounting bracket 82. The first character tape 100 is wound and tensioned on the first gear 834, the two large gear sleeves 832, and the two first bushings 833. The first gear 834 and the first knob 831 are both fixed on the left mounting bracket 81, located on the left and right sides of the left mounting bracket 81 and coaxially installed. The right mounting bracket 82 has multiple mounting shafts 821 on its inner side, and the bushings 833 are sleeved on the mounting shafts 821.

[0021] The second character belt adjustment device 84 includes a second knob 841, a second gear and sleeve transmission pair, and a second bushing 843. The second gear and sleeve transmission pair includes a second gear 844 mounted on the left mounting bracket and a small gear sleeve 842 mounted on the right mounting bracket 82. The second character belt 200 is wound and tensioned on the second gear 843, the small gear sleeve 842, and the second bushing 843. The second gear 844 and the second knob 841 are both mounted on the left mounting bracket 81, located on the left and right sides of the left mounting bracket 81 and coaxially mounted. The second bushing 843 is also sleeved on the mounting shaft 821.

[0022] like Figures 6 to 8As shown, the back of both the first character strip 100 and the second character strip 200 is a continuous transmission rack 101 / 201. The transmission process is realized by the cooperation of the transmission rack and the gear. In addition, the interior of the first character strip 100 is embedded with a number of strong fiber ropes 102 to prevent stretching along its extension direction, and the interior of the second character strip 200 is embedded with a number of strong fiber ropes (not shown in the figure) to prevent stretching along its extension direction.

[0023] In the invention, the first character strip 100 and the second character strip 200 are both made of high-temperature resistant elastic material, and the front is decorated with protruding characters that are different numbers arranged in sequence.

[0024] The first character band 100 has a date character 102 with 1-31 digits protruding on its front, and the second character band 200 has a month character 202 with 1-12 digits protruding on its front.

[0025] In this invention, the characters on each character strip are not limited to month and date characters; they can also be other numerical characters, such as code numbers, or graphic codes, which can be selected according to actual needs.

[0026] like Figure 9 , Figure 10 As shown, the elastic character heat printing device 9 includes an aluminum bracket 91. A character heating element 92 for heat sealing characters and a high-temperature resistant thermoplastic strip 93 covering the character heating element 92 are sequentially installed on the aluminum bracket 91. Left and right mounting bracket ears 94 are provided on both the left and right sides of the aluminum bracket 91. Two compression spring receiving cavities 95 containing compression springs 94 are symmetrically provided at the bottom of the aluminum bracket 91.

[0027] The sealing heating element assembly 7 can be any commonly used heating element in the industry, as long as it can meet the heating and sealing requirements.

[0028] This invention also discloses a vacuum sealing method for the aforementioned vacuum sealing machine with characters, the steps of which are: (1) First, align the opening of the plastic bag to be sealed with the opening of the vacuum sealer; (2) Next, align the position of the characters to be sealed on the plastic bag with the character strip and the elastic character heat printing device 9, and manually turn the knobs 831 / 841 to adjust the characters to be heat printed on the character strips 100 and 200 to the upward center position; (3) Finally, close the top cover 1 of the vacuum sealing machine, turn on the power, and simultaneously complete the sealing work at the sealing point and the character heat printing work.

[0029] The vacuum sealing machine with characters described in this invention has a simple structure, a compact and lightweight appearance, is convenient and reliable to use, can heat print various characters, has high heating efficiency, can be disassembled without additional tools, is easy to clean and maintain, has a long service life, good stability, and low manufacturing cost.

[0030] This invention is not limited to the above-described embodiments. If any modifications or variations to this invention do not depart from the spirit and scope of this invention, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this invention, then this invention also includes such modifications and variations.

Claims

1. A vacuum sealing machine with characters, comprising a base and a top cover, the top cover being movably hinged to one side of the base, the base being provided with a vacuum pump, a control circuit board, and a power cord, the vacuum pump being electrically connected to the control circuit board, the base and the top cover having corresponding positions on their contact surfaces when closed, an upper vacuum chamber and a lower vacuum chamber, the upper and lower vacuum chambers being respectively provided with sealing rings around their perimeters, a sealing heating element assembly electrically connected to the control circuit board being provided on the front side of the base, and a heat sealing strip cooperating with the heating element assembly being provided at a corresponding position on the front side of the top cover, characterized in that: The upper vacuum chamber / lower vacuum chamber inside the top cover / base is provided with several sets of character strips and a character strip driving device for driving the character strips to move. Several protruding characters are arranged on the front of the character strips. The lower vacuum chamber / upper vacuum chamber at the corresponding position of the base / top cover is provided with an elastic character heat printing device for heat printing the characters of the character strips onto the plastic bag to be sealed. The back of the character strip is a continuous transmission rack, and several strong fiber ropes to prevent stretching are embedded inside the character strip along its extension direction. The character tape driving device includes a left mounting bracket, a right mounting bracket, and several sets of character tape adjustment devices for mounting different character tapes and adjusting the characters to be heat-printed on the character tapes respectively. The character belt adjustment device includes a first character belt adjustment device and a second character belt adjustment device. The first character belt adjustment device includes a first knob, a first gear and sleeve transmission pair, a first character belt, and several first bushings. The first gear and sleeve transmission pair includes a first gear mounted on the left bracket and two large gear sleeves mounted on the front and rear sides of the right bracket. The first character belt is wound and tensioned on the first gear, the two large gear sleeves, and the two first bushings. The first gear and the first knob are both fixed on the mounting bracket, located on the left and right sides of the left mounting bracket and coaxially installed. The right bracket has a mounting shaft on its inner side, and the bushings are sleeved on the mounting shaft. The second character belt adjustment device includes a second knob, a second gear and sleeve transmission pair, a second character belt with protruding characters, and a second bushing. The second gear and sleeve transmission pair includes a second gear mounted on the left bracket and a small sleeve mounted on the right bracket. The second character belt is wound and tensioned on the second gear, the small sleeve, and the second bushing. The second gear and the second knob are both mounted on the left mounting bracket, located on the left and right sides of the left mounting bracket and coaxially installed. The right bracket has a mounting shaft on its inner side, and the second bushing is sleeved on the mounting shaft.

2. The vacuum sealing machine with characters according to claim 1, characterized in that: The first and second character strips are made of high-temperature resistant elastic material, with prominent characters arranged in sequence on the front.

3. The vacuum sealing machine with characters according to claim 2, characterized in that: The first character band has 1-31 date numbers arranged in sequence on the front, and the second character band has 1-12 month numbers arranged in sequence on the front.

4. The vacuum sealing machine with characters according to claim 1, characterized in that: The elastic character heat printing device includes an aluminum bracket, on which a character heating element for heat sealing characters and a high-temperature resistant thermoplastic strip covering the character heating element are sequentially installed. The aluminum bracket has left and right bracket ears on both sides, and two compression spring receiving cavities containing compression springs are symmetrically provided at the bottom of the aluminum bracket.

5. The vacuum sealing method of the vacuum sealing machine with characters according to any one of claims 1-4, comprising the following steps: (1) First, align the opening of the food storage bag to be sealed with the opening of the vacuum sealer; (2) Next, align the position of the characters to be sealed on the plastic bag with the character device and the flexible character heat printing device, and manually turn the knob to adjust the character to be heat printed on the character device to the upward center position; (3) Finally, close the top cover of the vacuum sealing machine, turn on the power, and complete the sealing work at the sealing point and the character heat printing work.

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