A sealing machine

Abstract

The application provides a sealing machine, and relates to the technical field of plastic sealing devices, which comprises a shell, a flip cover rotatably arranged on the shell, a heating assembly, an inner suction assembly, an outer suction assembly and a control assembly, wherein the control assembly is electrically connected with the heating assembly, the inner suction assembly and the outer suction assembly, and is configured to drive the outer suction assembly to work when the flip cover is opened, and drive the heating assembly and the inner suction assembly to work when the flip cover is closed. According to the application, different air suction functions can be realized in the open cover state and the closed cover state, the product is rich in functionality, and the required material cost of the shell can be reduced by arranging the heating assembly to isolate the outer shell and the heating element.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic sealing device, in particular to a sealing machine. BACKGROUND

[0002] The existing sealing machine heating body is generally directly installed on the shell, and a mica sheet and a high-temperature adhesive tape are added on the shell. The shell is generally made of ordinary non-high-temperature plastic material (high-temperature material is generally more expensive, and the appearance is not ideal, such as nylon, PBT, PET, etc. The appearance has defects, and PC material is expensive). The mica sheet is a non-foldable material, so there is inevitable contact between the heating body and the plastic shell, thereby the whole machine has the risk of melting glue and even fire. In addition, when the heating body is installed on the shell, it needs to be installed on the main line, which has a very key influence on the installation efficiency and product quality of the whole machine. Moreover, many existing products exist to complete the product stability at the cost, and only a single function can be realized, that is, one structure controls one function, resulting in poor functionality of the product. SUMMARY

[0003] The present application discloses a sealing machine, which is simple in structure and convenient to operate, and aims to improve the problem that the existing sealing machine heating body is easy to cause the shell to melt and the sealing machine to have a single function.

[0004] The present application adopts the following scheme:

[0005] The present application provides a sealing machine, which comprises a shell and a flip cover rotatably arranged on the shell, and further comprises a control assembly, a heating assembly, an inner suction assembly and an outer suction assembly electrically connected with the control assembly; the inner suction assembly is configured to perform vacuum air suction in a packaging bag after the flip cover is closed; the heating assembly is detachably installed in the shell and close to the inner suction assembly to perform heat sealing treatment on the packaging bag after the flip cover is closed; the outer suction assembly is connected to the outside of the shell and is configured to perform air suction treatment in the packaging bag after the flip cover is opened; the control assembly is configured to control the heating assembly and the inner suction assembly to work when the flip cover is closed, and to control the outer suction assembly to work and the heating assembly to be disconnected from power supply when the flip cover is opened.

[0006] Further, the heating assembly comprises a heating body, a support frame and a support seat, wherein the heating body is arranged on the support frame, and the support frame is fixed on the shell through the support seat.

[0007] Further, the heating body comprises a heating wire, a high-temperature insulating sleeve and a back adhesive high-temperature adhesive tape, wherein the heating wire is arranged in the high-temperature insulating sleeve, and the high-temperature insulating sleeve is fixed on the support frame through the back adhesive high-temperature adhesive tape.

[0008] Further, the support frame and the support seat are made of high-temperature material by injection molding.

[0009] Further, the inner suction assembly comprises a vacuum chamber and a micro air pump arranged in the shell, the micro air pump being connected to the control assembly; the vacuum chamber is provided with a negative pressure port, a pressure relief port and an air suction port, the negative pressure port being connected to the micro air pump through a first air duct to generate vacuum in the vacuum chamber, the pressure relief port being connected with a pressure relief valve; the air suction port is adapted to be connected to the outer suction assembly through a second air duct to perform air suction work.

[0010] Further, the control assembly comprises a push button, a micro switch, a first circuit board and a second circuit board, wherein the micro switch is normally closed and connected to the first circuit board and the second circuit board to control the circuit on-off of the first circuit board and the second circuit board; the push button is movably arranged on the shell and movable between a first position, a second position and a third position of the shell; when the flip cover is closed, the push button is driven to move to the first position by the flip cover, at this time the micro switch is opened to turn on the first circuit board, so that the heating assembly and the inner suction assembly work; when the flip cover is opened, the push button automatically moves to the second position and triggers the micro switch to close, so that the first circuit board is powered off; when the user pushes the push button to the third position, the push button triggers a bean switch arranged on the second circuit board, at this time the micro switch is opened to power on the second circuit board and control the outer suction assembly to work.

[0011] Further, the first position, the second position and the third position are located on the same straight line, and the second position is located between the first position and the third position.

[0012] Further, an elastic member is arranged between the first position and the second position, the elastic member being configured to drive the push button to move to the second position by its elastic restoring force when the flip cover is opened.

[0013] Further, a cooling groove is arranged on the shell near the peripheral side of the heating assembly, the cooling groove being connected to the micro air pump; a temperature sensor connected to the control assembly is arranged on the heating assembly, and when the temperature sensor detects that the temperature of the support frame is higher than a set value, the control assembly controls the micro air pump to blow air into the cooling groove to reduce the temperature of the peripheral side of the heating assembly.

[0014] Further, the first air duct connected to the negative pressure port is provided with a shunt pipe, the shunt pipe connecting the micro air pump and the cooling groove, and a one-way valve is arranged at the negative pressure port to guide air from the vacuum chamber to the micro air pump in one direction.

[0015] Advantages:

[0016] The application improves the functionality of the sealing machine by setting the flip cover to close for internal extraction and heat sealing, and to open for external extraction control, thereby improving the functionality of the sealing machine, suitable for different application scenarios, and the control is controlled by the closing and opening of the flip cover, and the heating assembly can be powered off when the flip cover is opened, thereby ensuring that the product meets the safety requirements. Further, by the heating assembly, the heating element is separated from the shell, thereby effectively reducing the heat transfer capacity of the heating element to the shell, so that only a heat-resistant material needs to be provided on the support frame of the heating assembly, without the need to use a heat-resistant material on the entire shell, which helps to reduce costs. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structure diagram of a flip cover of a sealing machine according to an embodiment of the application when closed;

[0018] Figure 2 is a cross-sectional structure diagram of a sealing machine according to a first embodiment of the application;

[0019] Figure 3 is a structure diagram of a flip cover of a sealing machine according to a first embodiment of the application when opened;

[0020] Figure 4 is an exploded structure diagram of a heating assembly of a sealing machine according to a first embodiment of the application;

[0021] Figure 5 is a control assembly internal structure diagram of a sealing machine according to a second embodiment of the application;

[0022] Figure 6 is a push button position diagram of a sealing machine according to a second embodiment of the application;

[0023] Figure 7 is a structure diagram of a sealing machine with a cooling groove according to a third embodiment of the application;

[0024] Figure: outer shell 1, limit rotation protrusion 11, inner shell 2, vacuum chamber 21, cooling groove 22, knife groove 23, cutter 24, knife holder 25, flip cover 3, rotating shaft 31, push groove 32, negative pressure port 26, air outlet 27, pressure relief port 28, control assembly 4, control button 41, push button 42, push block 421, micro switch 43, first circuit board 44, second circuit board 45, bean switch 46, elastic member 47, heating assembly 5, heating body 51, support frame 52, support seat 53, gap hole 54, micro air pump 61, first position 71, second position 72, third position 73. DETAILED DESCRIPTION

[0025] EMBODIMENT

[0026] In combination Figures 1 to 7 As shown in the first embodiment of the present application, a sealing machine comprises a housing, a flip cover 3 rotatably arranged on the housing, a control assembly 4, a heating assembly 5 electrically connected to the control assembly 4, an inner suction assembly, and an outer suction assembly; wherein,

[0027] The inner suction assembly is configured to perform vacuum suction on the packaging bag after the flip cover 3 is closed.

[0028] The heating assembly 5 is detachably mounted in the housing and close to the inner suction assembly to perform heat sealing treatment on the packaging bag after the flip cover is closed.

[0029] The outer suction assembly is connected to the outside of the housing and is configured to perform suction treatment on the packaging bag after the flip cover 3 is opened.

[0030] The control assembly 4 is configured to control the heating assembly 5 and the inner suction assembly to work when the flip cover 3 is closed, and to control the outer suction assembly to work when the flip cover 3 is opened, and to control the heating assembly 5 to be disconnected from power supply at the same time.

[0031] In combination Figures 1 to 4 As shown in the first embodiment of the present application, a sealing machine comprises a housing, a flip cover 3 rotatably arranged on the housing, a control assembly 4, a heating assembly 5 electrically connected to the control assembly 4, an inner suction assembly, and an outer suction assembly; wherein,

[0032] The flip cover 3 and the shell are provided with the heat generating assembly 5 on the side away from the rotating shaft 31, the heat generating assembly 5 comprises a heat generating body 51, a supporting frame 52 and a support seat 53, wherein the heat generating body 51 is arranged on the supporting frame 52, and the supporting frame 52 is fixed on the shell through the support seat 53. Here, the support seat 53 is fixed on the inner shell 2 in the form of buckling, the supporting frame 52 is fixed by the support seat 53, and a placing groove for placing the heat generating body 51 is formed between the support seat 53 and the supporting frame 52. A plurality of gap holes 54 are arranged on the supporting frame 52 and the support seat 53, which facilitates heat dissipation. The heat generating body 51 comprises a heating wire, a high-temperature insulating sleeve and a back adhesive high-temperature adhesive tape, wherein the heating wire is arranged in the high-temperature insulating sleeve, and the high-temperature insulating sleeve is fixed on the supporting frame 52 through the back adhesive high-temperature adhesive tape. Here, the high-temperature insulating sleeve is arranged in a cylindrical shape. The supporting frame 52 and the support seat 53 can be plastic parts made of high-temperature material PBT+30GF (or PET, PPS, nylon and other high-temperature materials) injection molding, so that they can not melt when the heat generating part is working. The inner shell 2 and the outer shell 1 can be made of ordinary plastic material, thereby reducing the cost.

[0033] In the embodiment, the vacuum chamber 21 is further provided with a cutting assembly on the side away from the heat generating assembly 5, the cutting assembly comprises a cutter 24 and a cutter holder 25, the inner shell 2 is provided with a cutter groove 23 for accommodating the cutter 24 and the cutter holder 25, the cutter 24 is slidably arranged on the cutter holder 25, and the cutter holder 25 is rotatable up and down relative to the inner shell 2, so that the cutter holder 25 can place the packaging bag to be cut off when leaving the cutter groove 23. After the cutter holder 25 is put into the cutter groove 23, the cutter 24 can be slid to cut the packaging bag.

[0034] In combination with Figures 5 to 6 As shown in the second embodiment of the present application, the sealing machine further comprises an inner extraction assembly 6 and a control assembly 4, wherein the inner extraction assembly 6 comprises a vacuum chamber 21 arranged in the shell, and a micro air pump 61 connected to the control assembly 4; the vacuum chamber 21 is provided with a negative pressure port 26, a pressure relief port 28 and an air extraction port 27, the negative pressure port 26 is connected to the micro air pump 61 through a first air guide pipe, the pressure relief port 28 is connected to a pressure relief valve, and the air extraction port 27 is connected to the outer extraction assembly through a second air guide pipe. Here, the vacuum chamber 21 is arranged on the inner side of the heat generating assembly 5, so that the air in the packaging bag to be heat sealed can be extracted by the vacuum chamber 21 before the heat generating assembly 5 works, so as to form a vacuum in the packaging bag, and then heat sealing is performed by the heat generating assembly 5.

[0035] In combination with Figures 5 to 6As shown, the control assembly 4 comprises a control button 41, a push button 42, a micro switch 43, a first circuit board 44 and a second circuit board 45. The control button 41 is connected to the first circuit board 44 and the second circuit board 45, so that a user can operate the control button 41 as needed to realize the functions of inner extraction, outer extraction and heating. Here, the micro switch 43 is normally closed (i.e. powered on when opened and powered off when closed), and is connected to the first circuit board 44 and the second circuit board 45 to control the circuit on-off of the first circuit board 44 and the second circuit board 45. The push button 42 is movably arranged on the shell to move on the first position 71, the second position 72 and the third position 73 of the shell. When the lid 3 is closed, the push button 42 is driven by the lid 3 to move to the first position 71, and the micro switch 43 is opened to power on the first circuit board 44, so that the heating assembly 5 and the inner extraction assembly 6 work. When the lid 3 is opened, the push button 42 automatically moves to the second position 72 and triggers the micro switch 43 to close, so that the first circuit board 44 is powered off. When the lid 3 is in the initial state, the user pushes the push button 42 to the third position 73, and the push button 42 triggers the bean switch 46 arranged on the second circuit board 45, so that the second circuit board 45 drives the outer extraction assembly to work. In this embodiment, the first position 71, the second position 72 and the third position 73 are located on the same straight line, and the second position 72 is located between the first position 71 and the third position 73, so as to facilitate the switching control of the push button 42. A resilient member 47 is arranged between the first position 71 and the second position 72, and the resilient member 47 is configured to drive the push button 42 to move to the second position 72 by the elastic restoring force when the lid 3 is opened.

[0036] In this embodiment, the push button 42 protrudes from the inner shell 2, and a push block 421 is formed above the inner shell 2. The lid 3 is internally provided with a push groove 32 matched with the push block 421. The resilient member 47 can be an M-shaped plastic resilient member 47 fixed on the inner shell 2. During the closing of the lid 3, the push block 421 enters the push groove 32, thereby pushing the push button 42 to move towards the first position 71, and at this time the resilient member 47 generates an elastic restoring force. During the opening of the lid 3, the push block 421 is separated from the push groove 32, thereby canceling the limiting force of the push groove 32 on the push button 42, and the push button 42 automatically returns to the second position 72 under the action of the elastic restoring force of the resilient member 47. In this embodiment, the normally closed working principle of the micro switch 43 is utilized to realize the use of the equipment in different working states when the push button 42 moves forward and backward. The M-shaped plastic resilient member 47 on the shell is utilized to realize the reciprocating action of the push button 42 in the open and closed states of the equipment, thereby realizing the safety requirement and product requirement in the most economical way.

[0037] In the embodiment, when the push button 42 is in the first position 71, the first circuit board 44 is powered and the second circuit board 45 is powered off, because the micro switch 43 is normally closed. When the push button 42 moves to the second position 72, the flip cover 3 is opened and the micro switch 43 is triggered, so that the micro switch 43 is closed, and the first circuit board 44 and the second circuit board 45 are powered off. When the flip cover 3 is opened, the push button 42 is manually moved to the third position 73, the micro switch 43 is opened again, and the push button 42 triggers the bean switch 46 arranged on the second circuit board 45, so that the second circuit board 45 is powered on and the key control part of the first circuit board 44 is powered off. In addition, when the push button 42 leaves the third position 73, the second circuit board 45 is powered off because the bean switch 46 is closed. The external extraction function can be controlled by the second circuit board 45. The external extraction function is realized by an external extraction assembly. The external extraction assembly includes a second air guide pipe and an external air extraction device (such as a gas pump, etc.). Here, the second circuit board 45 is connected to the external air extraction device, so as to control the external air extraction device. The external air extraction device is connected to the air extraction port 27 in the vacuum chamber 21 through the second air guide pipe. The air extraction port 27 can be inserted into the packaging bag to be heat sealed, so as to realize the external extraction function. In the embodiment, when the flip cover 3 is opened, the first circuit board 44 is powered off, so that the heating assembly 5 cannot work, which ensures that the heating cannot be performed when the cover is opened, so as to meet the safety requirements. At the same time, when the cover is opened, the user can perform the external extraction control by the action of pushing the push button 42, so that the same sealing machine can realize different functions by a simple structure. Further, in the embodiment, because the push button 42 cooperates with the push groove 32, when the user opens the flip cover 3, the push button 42 cannot be moved to the first position 71, because when the push button 42 moves to the first position 71, the push groove 32 arranged on the flip cover 3 is moved, so as to close the flip cover 3. That is, when the flip cover 3 is opened, the first circuit board 44 cannot be powered on, so that the heating assembly 5 cannot be powered on, which plays a safety protection role.

[0038] In combination Figure 7As shown, in the third embodiment of the present application, compared with the above-mentioned embodiments, the difference lies in that a cooling groove 22 is arranged on the shell near the peripheral side of the heat generating component 5, and the cooling groove 22 is connected to the micro air pump 61; a temperature sensor connected to the control component 4 is arranged on the heat generating component 5, and when the temperature sensor detects that the temperature of the support frame 52 is higher than a set value, the control component 4 controls the micro air pump 61 to blow air into the cooling groove 22 to reduce the temperature of the peripheral side of the heat generating component 5. Here, the cooling groove 22 is arranged on the peripheral side of the heat generating component 5, and can be in communication with the heat generating component 5, and the cooling groove 22 is communicated to the gap hole 54 between the support frame 52 and the support seat, so that when air is blown into the cooling groove 22, the airflow can flow between the support frame 52 and the support seat, and flow out of the gap between the cover 3 and the shell to the outside of the sealing machine. The heat generating component 5 and the area around the heat generating component 5 can be cooled. Here, the temperature sensor is used to sense the temperature of the heat generating component 5 and the area around the heat generating component 5, and when the temperature is higher than a set value, the micro air pump 61 is controlled to blow air, and the gas flows into the heat generating component 5 and the area around the heat generating component 5 through the cooling groove 22, so that the heat of the heat generating component 5 and the surrounding area can be dissipated, and the support frame 52, the support seat or the shell can be prevented from melting due to excessive temperature caused by short circuit or other reasons, thereby playing a protection role.

[0039] Here, the first air guide pipe connected to the negative pressure port 26 is provided with a shunt pipe (not shown) through a shunt device, which can be a "Y" shaped connector or the like, and the shunt pipe connects the micro air pump 61 and the cooling groove 22, and a one-way valve is arranged at the negative pressure port 26 to allow one-way conduction from the vacuum chamber 21 to the micro air pump 61. On the other hand, another one-way valve can also be arranged on the shunt pipe to allow one-way conduction from the micro air pump 61 to the cooling groove 22, so that during the air suction process, only the vacuum chamber 21 is suctioned, and during the air blowing process, only the cooling groove 22 is blown.

[0040] In this embodiment, the micro air pump 61 is a dual-purpose air pump that can both suck and blow air, and it is controlled by the first line board 44. It can also be arranged to blow air into the cooling groove 22 when the heat generating component 5 works continuously for more than a preset time, regardless of whether the temperature sensor transmits a signal of excessively high temperature, so as to prevent the temperature from being too high in the case of failure of the temperature sensor, and to protect the heat generating component 5 from continuous high temperature, thereby preventing the service life of the heat generating component 5 from being reduced.

[0041] Through the scheme of the present application, the heat generating component 5 is arranged to reduce the production cost of the sealing machine, the control component 4 is arranged to cooperate with the flip cover 3, so that the sealing machine realizes multifunctional control, and the safety requirement is realized at a lower cost; through the arrangement of the cooling groove 22 and the shunt pipe, the sealing machine can realize blowing and negative pressure suction by using the micro air pump 61 itself, so that different functions are realized, and the cooling effect is obtained especially at a high temperature.

[0042] It should be understood that the above is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical solution falling within the concept of the present application belongs to the protection scope of the present application.

[0043] The above introduction of the drawings used in the embodiments only shows some embodiments of the present application, and should not be considered as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained from the drawings without creative labor.

Claims

1. A sealing machine comprising a housing and a lid rotatably arranged on the housing, characterized in that, Also include: The control assembly and the heating assembly, inner extraction assembly, outer extraction assembly electrically connected with the control assembly; wherein, The inner extraction assembly is configured to be able to vacuum the packaging bag after the flip cover is closed; The heating assembly is detachably mounted in the shell and close to the inner extraction assembly, so as to heat seal the packaging bag after the flip cover is closed; The outer extraction assembly is connected to the outside of the shell, which is configured to be able to extract the air in the packaging bag after the flip cover is opened; The control assembly is configured to control the heating assembly and the inner extraction assembly to work when the flip cover is closed, and to control the outer extraction assembly to work when the flip cover is opened, and at the same time, the heating assembly is disconnected from the power supply; The control assembly includes a push button, a micro switch, a first circuit board, a second circuit board, wherein the micro switch is normally closed, and is connected to the first circuit board and the second circuit board to control the circuit on-off of the first circuit board and the second circuit board; The push button is movably arranged on the shell and can move in the first position, the second position and the third position of the shell; When the flip cover is closed, the push button is driven to move to the first position by the flip cover, at this time the micro switch is opened, so that the first circuit board is powered on, and the heating assembly and the inner extraction assembly work; When the flip cover is opened, the push button automatically moves to the second position and triggers the micro switch to close, so that the first circuit board is powered off; When the flip cover is opened and the push button moves to the third position, the push button triggers the bean switch arranged on the second circuit board, at this time the micro switch is opened, so that the second circuit board is powered on and controls the outer extraction assembly to work.

2. The capper of claim 1, wherein The heating assembly includes a heating body, a support frame and a bracket seat, wherein the heating body is arranged on the support frame, and the support frame is connected to the shell through the bracket seat.

3. The capper of claim 2, wherein The heating body includes a heating wire, a high-temperature insulating sleeve and a back adhesive high-temperature adhesive tape, wherein the heating wire is arranged in the high-temperature insulating sleeve, and the high-temperature insulating sleeve is fixed on the support frame by the back adhesive high-temperature adhesive tape.

4. The capper of claim 2, wherein The support frame and the bracket seat are made of high-temperature material injection molding.

5. The capper of claim 1, wherein The inner extraction assembly includes a vacuum chamber arranged in the shell and a micro air pump connected to the control assembly; The vacuum chamber is provided with a negative pressure port, a pressure relief port and an air extraction port, the negative pressure port is connected to the micro air pump through a first air guide pipe to generate vacuum in the vacuum chamber, and the pressure relief port is connected with a pressure relief valve; The air extraction port is adapted to be connected to the outer extraction assembly through a second air guide pipe for air extraction work.

6. The capper of claim 1, wherein The first position, the second position and the third position are located on the same straight line, and the second position is located between the first position and the third position.

7. The capper of claim 6, wherein The first position and the second position are provided with an elastic member, which is configured to drive the push button to move to the second position by the elastic restoring force when the flip cover is opened.

8. The capper of claim 5, wherein The shell is provided with a cooling groove near the peripheral side of the heat generating component, and the cooling groove is connected to the micro air pump; the heat generating component is provided with a temperature sensor connected to the control component, and when the temperature sensor detects that the temperature of the support frame is higher than a set value, the control component controls the micro air pump to blow air into the cooling groove to reduce the temperature of the peripheral side of the heat generating component.

9. The capper of claim 8, wherein The first air guide pipe connected to the negative pressure port is provided with a shunt pipe connected to the micro air pump and the cooling groove, and a one-way valve is arranged at the negative pressure port to guide the air from the vacuum chamber to the micro air pump in one direction.

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