Portable vacuum sealing machine

Abstract

The utility model relates to a portable vacuum sealing machine which comprises a base and a cover body hinged to the base, a lower shell is arranged in the base, a heating unit is arranged on the lower shell, and the heating unit is of an arc-shaped structure with the middle protruding upwards. An upper shell is arranged in the cover body, a flexible pressing strip is arranged at the position, corresponding to the heating unit, of the upper shell, and the flexible pressing strip is of an arc-shaped structure with the middle protruding downwards. By the adoption of the overall vertically-opposite-arched frame structure, no matter how the upper shell deforms in the later use process, the deformed upper shell and the flexible pressing strip can be tightly attached to the heating unit through the frame arched structure of the lower shell, and the phenomenon that bag sealing is poor in a wet pumping mode is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sealing machine technical field, specifically to a portable vacuum sealing machine. BACKGROUND

[0002] The vacuum sealing machine is a kind of equipment that can effectively isolate air and contact with goods. It is mainly composed of vacuum pump, vacuum chamber, heating sealing device and other parts. When working, first, the goods to be packaged are placed in the special packaging bag and placed in the vacuum chamber, the equipment starts the vacuum pump, and the air in the bag is extracted to form a vacuum environment, so as to inhibit the growth and reproduction of microorganisms and prolong the shelf life of goods.

[0003] At present, most of the vacuum type heat sealing bag machines on the market have poor wet extraction sealing bag effect under the working condition of wet extraction function, and even cannot realize the function. The reason is that the structure of all current vacuum heat sealing bag machines basically adopts an upper cover pre-deformation structure, as shown in Figure 1 , 01 is the lower shell and heating wire, and 02 is the upper shell and silica gel pressing strip.

[0004] After using the structure for a period of time, the upper shell and silica gel pressing strip will be flat, and when the product works together, a bulge gap will be formed between the upper shell and silica gel pressing strip and the lower shell and heating wire, as shown in Figure 2 , which causes the bag to be pressed, resulting in poor bag sealing. INVENTION CONTENTS

[0005] The utility model aims at providing a portable vacuum sealing machine with long service life to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the technical scheme of the utility model is as follows.

[0007] A portable vacuum sealing machine, comprising a base and a cover body hingedly installed on the base, the inside of the base is provided with a lower shell, the lower shell is provided with a heating unit, and the heating unit is an arc-shaped structure with the middle part protruding upward. The inside of the cover body is provided with an upper shell, and the upper shell is provided with a flexible pressing strip corresponding to the heating unit, and the flexible pressing strip is an arc-shaped structure with the middle part protruding downward.

[0008] Therefore, by adopting the overall upper and lower arch frame structure, no matter how the upper shell deforms in the later use process, the deformed upper shell and flexible pressing strip can be tightly attached to the heating unit through the frame arch structure of the lower shell, and the phenomenon of poor bag sealing under the wet extraction mode is solved.

[0009] Further, the lower rib with the middle part protruding upward is formed on the base. The upper rib with the middle part protruding downward is formed on the cover body. The overall structural strength of the base and the cover body is strengthened, and the possibility of deformation is reduced.

[0010] Further, the lower rib is formed on the lower shell of the base, and the heating unit is arranged on the lower rib. The upper rib is formed on the upper shell of the cover, and the flexible pressing strip is arranged on the upper rib. The frame arch structure can tightly fit the deformed upper shell and the flexible pressing strip to the heating unit.

[0011] Further, the heat insulation piece is arranged between the heating unit and the lower shell, the middle part of the heat insulation piece is upwardly protruded and tightly fitted to the lower side of the heating unit. The influence of heat on other components is reduced, and the loss of heat is reduced.

[0012] Further, the elastic piece is arranged between the heat insulation piece and the lower shell. The elastic piece can play a buffering role in the pressing process.

[0013] Further, the lower surface of the lower shell is fixed with the metal fixing seat with the metal spring on both sides. The two ends of the heating unit are buckled on the metal spring through the metal ring on the electrode. The electrode on the heating unit is convenient to assemble and disassemble.

[0014] Further, the surface of the upper shell is provided with the mounting groove, the upper side of the flexible pressing strip is provided with the lug, and the lug is embedded in the mounting groove. The lug is convenient to assemble, disassemble and replace.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows.

[0016] The present application adopts the overall upper and lower opposite arch frame structure, and no matter how the upper shell is deformed in the later use process, the deformed upper shell and the flexible pressing strip can be tightly fitted to the heating unit through the frame arch structure of the lower shell, so that the phenomenon of poor bag sealing in the wet extraction mode is solved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the pre-deformation structure of the existing technology upper flip cover;

[0018] Figure 2 It is a structure schematic view of the drum gap formed when the existing technology works;

[0019] Figure 3 It is a whole structure schematic view of the present application;

[0020] Figure 4 It is a partial structure schematic view of the base in the present application;

[0021] Figure 5 It is a connection structure schematic view of the electrode in the present application;

[0022] Figure 6 It is a partial cross-sectional structure schematic view of the cover in the present application;

[0023] Figure 7 It is a structure schematic view of the upper and lower opposite arch frame structure in the present application;

[0024] Figure 8 The control schematic view of the utility model.

[0025] In the drawing: 01, lower shell and heating wire; 02, upper shell and silica gel pressure strip; 100, portable sealing machine; 1, base; 101, heating unit; 102, lower rib; 103, lower concave cavity; 104, lower sealing ring; 105, air extraction hole; 106, lower shell; 2, cover; 201, flexible pressure strip; 202, upper rib; 203, upper concave cavity; 204, upper sealing ring; 205, upper shell; 206, mounting groove; 207, vacuum button; 208, sealing button; 209, dry-wet mode switching button; 210, automatic sealing button; 3, heat insulation piece; 301, elastic piece; 4, metal fixing base; 401, metal spring piece; 402, electrode; 4021, metal ring; 5, lug. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] As shown in Figures 1-8 A portable vacuum sealing machine, comprising a base 1 and a cover 2 hingedly installed on the base 1, the inside of the base 1 is provided with a lower shell 106, the lower shell 106 is provided with a heating unit 101, and the heating unit 101 is an arc-shaped structure with a middle part protruding upward. The inside of the cover 2 is provided with an upper shell 205, and the upper shell 205 is provided with a flexible pressure strip 201 at a position corresponding to the heating unit 101, and the flexible pressure strip 201 is an arc-shaped structure with a middle part protruding downward.

[0028] In addition, an execution unit (not shown) is arranged on the base 1. The heating unit 101 is a heating wire, and the flexible pressure strip 201 is preferably a silica gel pressure strip. A vacuum extraction unit (not shown) is arranged on the base 1. The lower concave cavity 103 is arranged on the base 1 and faces one side of the cover 2, and when the cover 2 is buckled with the base 1, the lower concave cavity 103 and the cover 2 jointly form a negative pressure cavity. The lower concave cavity 103 is provided with an air extraction hole 105, and the vacuum extraction unit is connected with the lower concave cavity 103 through a pipeline (not shown) and the air extraction hole 105. The main parts of the portable sealing machine 100 are arranged on the base 1, and the cover 2 is provided with a vacuum button 207, a sealing button 208, a dry-wet mode switching button 209 and an automatic sealing button 210 for inputting instructions.

[0029] In addition, the cover 2 is also provided with an upper concave cavity 203 to increase the volume of the negative pressure cavity. The base 1 and the cover 2 are respectively provided with a lower sealing ring 104 and an upper sealing ring 204. The lower sealing ring 104 and the upper sealing ring 204 are made of elastic material to increase the sealing performance.

[0030] Preferably, the base 1 is formed with a lower rib 102 which is upwardly convex in the middle. The cover 2 is formed with an upper rib 202 which is downwardly convex in the middle.

[0031] The lower rib 102 and the upper rib 202 are used to strengthen the overall structural strength of the base 1 and the cover 2 and reduce the possibility of deformation.

[0032] Preferably, the lower rib 102 is formed on the lower shell 106 of the base 1, and the heating unit 101 is arranged on the lower rib 102. The upper rib 202 is formed on the upper shell 205 of the cover 2, and the flexible pressing strip 201 is arranged on the upper rib 202.

[0033] No matter how the upper shell 205 is deformed during the later use, the deformed upper shell 205 can be tightly attached to the flexible pressing strip 201 and the heating unit 101 through the frame arch structure of the lower shell 106, so that the phenomenon of poor bag sealing in the wet extraction mode is solved.

[0034] Preferably, a heat insulation piece 3 is arranged between the heating unit 101 and the lower shell 106. The heat insulation piece 3 is upwardly convex in the middle and is attached to the lower side of the heating unit 101.

[0035] Through the arrangement of the heat insulation piece 3, the influence of heat on other components can be reduced.

[0036] In addition, the heat insulation piece 3 is preferably a mica sheet. The side of the heating unit 101 facing the cover 2 is provided with a heat-resistant layer (not shown). (This component is used to avoid exposure of the heating wire and is not necessary.)

[0037] Preferably, an elastic piece 301 is arranged between the heat insulation piece 3 and the lower shell 106.

[0038] Through the arrangement of the elastic piece 301, a buffering effect can be achieved during the pressing process. The elastic piece 301 is preferably a silica gel pad.

[0039] Preferably, the lower surface of the lower shell 106 is fixed with a metal fixing seat 4 having a metal spring 401 on both sides. The two ends of the heating unit 101 are buckled on the metal spring 401 through the metal ring 4021 on the electrode 402.

[0040] Through the connection structure, the electrode 402 on the heating unit 101 is convenient to assemble and disassemble.

[0041] Preferably, the surface of the upper shell 205 is provided with a mounting groove 206, and the upper side of the flexible pressing strip 201 is provided with a lug 5 which is embedded in the mounting groove 206.

[0042] Through the mounting structure, the lug 5 is convenient to mount, dismount and replace.

[0043] As shown in Figure 8 the portable sealing machine 100 comprises a storage unit, an instruction input unit, a control unit, an execution unit and a heating unit 101. The control unit is electrically connected with the storage unit, the instruction input unit and the execution unit respectively, and the execution unit is electrically connected with the heating unit 101. The storage unit stores a heating control curve corresponding to the cumulative number of heating, the instruction input unit is used for receiving a heating instruction and sending the heating instruction to the control unit, and the control unit receives the heating instruction and sends a target heating time as a heating instruction to the execution unit. After starting, if the heating instruction is received for the first time, the control unit takes the predetermined heating time as the target heating time; after starting, if the heating instruction is received for the second time, the control unit obtains the heating control curve corresponding to the cumulative number of heating from the storage unit, and obtains the target heating time according to the time difference between the adjacent two heating and the selected heating control curve. The execution unit receives the heating instruction and outputs the current to the heating unit 101 according to the heating instruction.

[0044] The vacuum button 207 is used for inputting a vacuum drawing instruction and a vacuum canceling instruction. When the portable sealing machine 100 is in an idle state, pressing the vacuum button 207 can input the vacuum drawing instruction; when the portable sealing machine 100 is in a vacuum state, pressing the vacuum button 207 can input the vacuum canceling instruction.

[0045] The sealing button 208 is used for inputting a heating instruction and a heating canceling instruction. When the portable sealing machine 100 is in an idle state, pressing the sealing button 208 can input the heating instruction; when the portable sealing machine 100 is in a heating state, pressing the sealing button 208 can input the heating canceling instruction.

[0046] The dry-wet mode switching button 209 is used for inputting a dry-wet mode switching instruction. When the object to be sealed is a dry object, the dry mode is used, and when the object to be sealed is a wet object, the wet mode is used. The difference between the two modes is that the vacuum drawing time in the wet mode is longer than that in the dry mode.

[0047] The automatic sealing button 210 is used for inputting a vacuum drawing heating instruction and a termination instruction. When the portable sealing machine 100 is in an idle state, pressing the automatic sealing button 210 can input the vacuum drawing instruction and the heating instruction; when the portable sealing machine 100 is in any working state, pressing the automatic sealing button 210 can input the termination instruction, so that the portable sealing machine 100 returns to the idle state. Here, any working state includes a single vacuum drawing working state, a single heating working state, and a vacuum drawing and simultaneous heating working state.

[0048] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and the details will not be described herein, and the contents not described in detail in the description belong to the prior art known by the professional technical personnel in the field.

[0049] The above is the detailed description of the utility model combined with specific embodiments, and the specific implementation mode of the utility model cannot be limited to the description. For the ordinary technical personnel in the technical field to which the utility model belongs, a number of equivalent substitutions or obvious modifications can be made without departing from the concept of the utility model, and the performance or use is the same, and all should be regarded as belonging to the patent protection range determined by the submitted claims of the utility model.

Claims

1. A portable vacuum sealing machine, comprising a base (1) and a cover (2) hingedly mounted on the base (1), characterized in that: the inside of the base (1) is provided with a lower shell (106), and a heating unit (101) is arranged on the lower shell (106), wherein the heating unit (101) is an arc-shaped structure with a middle part upwardly protruding; the inside of the cover (2) is provided with an upper shell (205), and a flexible pressing strip (201) is arranged on the upper shell (205) corresponding to the heating unit (101), wherein the flexible pressing strip (201) is an arc-shaped structure with a middle part downwardly protruding.

2. The portable vacuum sealing machine according to claim 1, characterized in that: a lower rib (102) with a middle part upwardly protruding is formed on the base (1); and an upper rib (202) with a middle part downwardly protruding is formed on the cover (2).

3. The portable vacuum sealing machine according to claim 2, characterized in that: the lower rib (102) is formed on the lower shell (106) of the base (1), and the heating unit (101) is arranged on the lower rib (102); and the upper rib (202) is formed on the upper shell (205) of the cover (2), and the flexible pressing strip (201) is arranged on the upper rib (202).

4. The portable vacuum sealing machine according to any one of claims 1-3, characterized in that: a heat insulation piece (3) is arranged between the heating unit (101) and the lower shell (106), wherein the middle part of the heat insulation piece (3) upwardly protrudes and is attached to the lower side of the heating unit (101).

5. The portable vacuum sealing machine according to claim 4, characterized in that: an elastic piece (301) is arranged between the heat insulation piece (3) and the lower shell (106).

6. The portable vacuum sealing machine according to claim 5, characterized in that: metal fixing seats (4) with metal springs (401) are fixed on both sides of the lower surface of the lower shell (106); and the heating unit (101) is buckled on the metal springs (401) through metal rings (4021) on electrodes (402) at both ends of the heating unit (101).

7. The portable vacuum sealing machine according to claim 5, characterized in that: an installation groove (206) is arranged on the surface of the upper shell (205), and a lug (5) is arranged on the upper side of the flexible pressing strip (201), wherein the lug (5) is embedded in the installation groove (206).

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