CN209410431U - A vacuum sealing machine with cover rotation locking device - Google Patents

Abstract

The utility model discloses a vacuum sealing machine with cover rotation locking device, including rotation locking device, rotation locking device includes rotary gear subassembly and couple, and rotary gear subassembly sets up the front end at the piston rod, and the couple sets up the lower surface at the upper cover, and the exhaust chamber is provided with the aspirating hole, and the evacuation pump is connected the aspirating hole, and the piston rod has initial position and locking closure position, and the piston rod moves to the locking closure position from the initial position when the evacuation pump discharges the negative pressure, and the piston rod moves to the initial position from the locking closure position when the evacuation pump discharges the negative pressure; when the piston rod stops at the initial position, the vacuumizing groove is communicated with the air exhaust chamber in a disconnecting mode, the rotating gear assembly is separated from the hook, when the piston rod stops at the position of the lock cover, the vacuumizing groove is communicated with the air exhaust chamber, and the rotating gear assembly is in press fit with the movable rotating clamp of the hook. This rotatory locking device of cover need not both hands and assists the operation that compresses tightly, realizes that upper cover and frame locking are automatic, convenient to use, and the cover locking is tight, is difficult to take place to leak gas.

Description

A vacuum sealing machine with cover rotation locking device

technical field

The utility model relates to the technical field of vacuum sealing machines, in particular to a vacuum sealing machine with a cover rotation locking device.

Background technique

Vacuum sealers that can remove air from vacuum bags and extend the shelf life of food are becoming more and more popular in households. When the vacuum sealing machine heat seals or vacuumizes the vacuum packaging bag, the upper cover and the base of the vacuum sealing machine must be pressed tightly to proceed normally. In the existing vacuum sealing machine, such as the publication number of CN202657285U, the locking or loosening of the cover requires a single manual assistance to be completed, which is inconvenient to use. The existing vacuum sealing machine also has the ability to automatically lock the cover, but the existing mechanism for automatically locking the cover is complex, the cover locking effect is not ideal, and air leakage is prone to occur.

Utility model content

In view of the deficiencies in the prior art, the purpose of this utility model is to provide a vacuum sealing machine with a cover rotation locking device, which does not require two hands to assist the pressing operation, realizes automatic locking of the upper cover and the machine base, is convenient to use, and The cover is tightly locked, air leakage is not easy to occur, the number of components of the cover rotation locking device is small, the pipeline connection is simplified, and the vacuuming efficiency is improved.

In order to achieve the above purpose, the technical solution adopted by the present utility model is: a vacuum sealing machine with a cover rotation locking device, including an upper cover and a machine base, the rear end of the upper cover is hinged to the machine base, and the machine base is installed in the machine base. There is a vacuum pump, one side edge of the base is provided with a vacuum groove, an air suction cylinder is installed on the inner side of the base, a piston rod is movably installed in the air suction cylinder, the rear end of the piston rod is installed in the air suction cylinder, and the front end of the piston rod extends to Outside the pumping cylinder, the piston rod and the pumping cylinder form a pumping chamber, the vacuuming tank and the pumping pump are respectively connected with the pumping chamber through the vacuuming pipe, including a rotary locking device, and the rotary locking device includes a rotary gear assembly and a hook, a rotary gear The assembly is arranged at the front end of the piston rod, the hook is arranged on the lower surface of the upper cover, the air extraction chamber is provided with an air extraction hole, and the vacuum pump is connected to the air extraction hole. The piston rod has an initial position and a locking cover position. Move to the lock cover position, and the piston rod moves from the lock cover position to the initial position when the vacuum pipe discharges the negative pressure; when the piston rod stops at the initial position, the vacuum suction groove is disconnected from the suction chamber, and the rotating gear assembly is separated from the hook. , when the piston rod stops at the locking cover position, the vacuuming groove is communicated with the vacuuming chamber, and the rotating gear assembly is press-fitted with the hook movable and rotating.

In a further technical solution, the rotating gear assembly includes a rotating clamping portion, the rotating clamping portion is connected with the hook in a rotationally movable clamping connection, and an arc-shaped opening is opened on the side of the hook facing the rotating clamping portion, and the piston rod When moving from the initial position to the cover-locking position, the rotary clamping part is screwed into the arc-shaped opening and pressed against the arc-shaped opening, and the upper cover is pressed and connected to the base; the piston rod is pressed from the locking cover When the position moves to the initial position, the rotating clamping part is unscrewed from the arc-shaped opening, the rotating clamping part is separated from the hook, and the upper cover is released from the machine base.

In a further technical solution, when the piston rod stops at the initial position, the rotating clamping part is located in front of the arc-shaped opening; when the piston rod stops at the locking cover position, the rotating clamping part is located in the arc-shaped opening. Inside and press against the arc-shaped opening.

In a further technical solution, the rotating gear assembly includes a support seat, the support seat is fixedly installed in front of the piston rod, a gear drive member is rotatably connected to one side of the support seat, and the gear drive member is connected to the piston rod in a transmission manner. The rotating clamping part is installed on the upper part, and the rotating clamping part is engaged with the gear driving part for transmission.

In a further technical solution, the gear driving member includes a connecting rod and a driving gear, the center position of the normal surface of one side of the driving gear is rotatably connected to the support seat, and the eccentric position of the normal surface of the other side of the driving gear is connected to the connecting rod. One end of the connecting rod is connected, the other end of the connecting rod is connected with the front end of the piston rod, and the rotating clamping part is engaged with the driving gear for transmission.

In a further technical solution, one end of the rotating clamping part is provided with a transmission gear, the transmission gear meshes with the driving gear for transmission, and the other end of the rotating clamping part is provided with an extrusion block protruding from the horizontal direction of the hook. , the extrusion block is connected with the hook by rotating and pressing, and the contact surface of the extrusion block in contact with the hook is an arc surface.

In a further technical solution, the top surface of the support seat is recessed downward to form a support portion, a rotating portion is arranged between the transmission gear and the extrusion block, and the rotating portion is rotatably mounted on the support portion, and the shape of the support portion is It is adapted to the shape of the rotating part.

In a further technical scheme, the top of the air extraction cylinder is provided with the air extraction hole and the air passage, the air passage is connected with the vacuum evacuation groove, the lower part of the air passage is provided with a ventilation port, and an air plug is installed in the air passage; When the piston rod stops at the initial position, the piston rod is separated from the air plug, the top of the piston rod is located below the air plug, the air plug is located at the air port to close the air port, and the air passage is disconnected from the air extraction chamber, so The upper cover is loosely connected to the base; when the piston rod stops at the lock cover position, the bottom surface of the gas plug contacts the top of the piston rod, the top of the piston rod moves in coordination with the gas plug, and the gas plug moves Above the air vent, the air channel is communicated with the air extraction chamber, and the upper cover is closed and connected with the machine base.

In a further technical solution, the vacuuming chamber forms a negative pressure during vacuuming, so as to push the piston rod to move from the initial position to the locking cover position through the negative pressure; the vacuuming pipe includes a first The first vacuum pipe and the second vacuum pipe are connected to the vacuum pump, the second end of the first vacuum pipe is connected to the vacuum hole, the first end of the second vacuum pipe is connected to the vacuum tank, and the second vacuum pipe is connected to the vacuum tank. The second ends of the two evacuated tubes are connected to the air passage.

In a further technical solution, a push rod return spring is provided in the air extraction cylinder, one end of the push rod return spring abuts against the top surface of the air extraction cylinder, and the other end of the push rod return spring abuts against the top of the piston rod; An airway closing spring is provided, one end of the airway closing spring touches the top of the airway, and the other end of the airway closing spring touches the air plug; a micro-touch switch and a heating wire control circuit are installed in the base, and the micro-touch The switch is connected with the heating wire control circuit, the side surface of the piston rod is recessed inward to form a trigger cavity, a trigger part is protruded in the trigger cavity, and the trigger part is triggered and matched with the micro-touch switch.

After adopting the above-mentioned structure, the advantage that the utility model has compared with the prior art is:

1. The utility model realizes the function of automatically locking the cover, without the need for hands to assist in the operation of the cover locking, which is convenient to use, has a good cover locking effect, and is not prone to air leakage.

2. The cover locking device of the utility model has the advantages of accurate transmission, high transmission efficiency, compact structure, reliable operation and long service life.

3. The pressing and tightening device of the present utility model has a simple structure, a small number of components, reduces the number of pipes and interfaces, the total length of the pipes is short, the production cost is low, the energy conversion efficiency is high, the vacuuming efficiency is improved, and the cover locking effect is good.

Description of drawings

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

FIG. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view of the internal structure of the piston rod in the first embodiment of the present invention when it is in the initial position.

FIG. 3 is a cross-sectional view of the internal structure of the piston rod in the first embodiment of the present invention when the piston rod is in the position of locking the cover.

FIG. 4 is a schematic structural diagram of the support seat of the present invention.

FIG. 5 is a schematic structural diagram of Embodiment 2 of the present invention.

FIG. 6 is a schematic structural diagram of the rotary locking device according to the second embodiment of the present invention.

In the picture: 10- base, 12- cover, 15- micro-touch switch, 16- hook;

20-extraction cylinder, 21-push rod return spring, 22-extraction hole, 23-airway, 24-ventilation, 25-air plug, 26-airway closing spring;

30-piston rod, 36-trigger part, 37-trigger cavity;

40-support seat, 41-support part, 42-rotation clamping part, 43-rotation part, 44-extrusion block, 45-transmission gear, 46-connecting rod, 47-driving gear, 48-connecting rod.

Detailed ways

The following are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention.

A vacuum sealing machine with a cover rotation locking device, as shown in Figures 1-6, includes an upper cover 12 and a base 10, the rear end of the upper cover 12 is hinged to the base 10, and a vacuum pump is installed in the base 10 , one side edge of the machine base 10 is provided with a vacuum groove, the inside of the machine base 10 is installed with an air extraction cylinder 20, a piston rod 30 is movably installed in the air extraction cylinder 20, and the rear end of the piston rod 30 is installed in the air extraction cylinder 20. The front end of the 30 extends to the outside of the air extraction cylinder 20, the piston rod 30 and the air extraction cylinder 20 form an air extraction chamber, the vacuum extraction tank and the vacuum extraction pump are respectively connected with the air extraction chamber through the vacuum extraction pipe, and the rotary locking device includes a rotary locking device. Rotating gear assembly and hook 16, the rotating gear assembly is arranged at the front end of the piston rod 30, the hook 16 is arranged on the lower surface of the upper cover 12, the air extraction chamber is provided with an air extraction hole 22, the vacuum pump is connected to the air extraction hole 22, and the piston rod 30 has an initial position and cap-locking position, the piston rod 30 moves from the initial position to the cap-locking position during vacuuming, and the piston rod 30 moves from the cap-locking position to the initial position when the vacuum pipe discharges the negative pressure; when the piston rod 30 stops at the initial position , the vacuuming groove is disconnected from the pumping chamber, the rotating gear assembly is separated from the hook 16, when the piston rod 30 stops at the lock cover position, the vacuuming groove is communicated with the pumping chamber, and the rotating gear assembly and the hook 16 are movable and rotationally pressed Cooperate.

The utility model realizes automatic locking of the machine cover by rotating the locking device. Specifically, the upper cover 12 and the machine base 10 are closed first. The piston rod 30 includes a piston head and a rod body. The piston head and the rod body are fixedly connected, and the piston head is installed on the In the suction cylinder 20, the piston head and the suction cylinder 20 form a closed space, the vacuum pump is connected with the suction cylinder 20, and the suction cylinder 20 is pumped by the vacuum pump, so that the inside of the suction cylinder 20 becomes negative air pressure, and the piston head is in the negative position. Under the action of air pressure, it moves toward the top of the air extraction cylinder 20. The piston rod 30 pulls the rotating gear assembly to rotate the rotating gear assembly. The rotating gear assembly rotates into the hook 16. With the rotation of the rotating gear assembly, the rotating gear assembly and the hook 16 rotate. The contact occurs and is gradually pressed downward, so that the upper cover 12 and the machine base 10 reach a locked state, which is convenient for the vacuum sealing machine to heat seal or vacuumize the vacuum packaging bag.

The rotating gear assembly includes a rotating clamping portion 42 , and the rotating clamping portion 42 is connected with the hook 16 in a rotationally movable clamping connection. The hook 16 has an arc-shaped opening on one side of the hook 16 facing the rotating clamping portion 42 .

Specifically, the initial position of the piston rod 30 is the initial position, that is, the upper cover 12 and the base 10 are in a movable and unlocked state. When the piston rod 30 stops at the initial position, the rotary clamping portion 42 is located in front of the arc-shaped opening. , the bottom surface of the hook 16 is at the highest position in the vertical direction after the upper cover 12 and the base 10 are closed. When the piston rod 30 moves from the lock cover position to the initial position, the rotary clamping part 42 is unscrewed from the arc-shaped opening, The rotary clamping part 42 is separated from the hook 16 , the upper cover 12 is disconnected from the base 10 , and the rotating gear assembly is separated from the hook 16 ; the lock cover position of the piston rod 30 is the end position of the piston rod 30 , and the upper cover 12 is connected to the base 10 is in the locked state. When the piston rod 30 stops at the position of locking the cover, the rotary clamping part 42 is located inside the arc-shaped opening and presses against the arc-shaped opening. At the lowest position in the vertical direction, when the piston rod 30 moves from the initial position to the cover-locking position, the rotary clamping part 42 is screwed into the arc-shaped opening and pressed against the arc-shaped opening, and the upper cover 12 is pressed and connected to the base 10 , the extrusion block is connected with the hook 16 by pressing.

The rotating gear assembly includes a support seat 40, the support seat 40 is fixedly installed in front of the piston rod 30, a gear driving member is rotatably connected to one side of the support seat 40, and the gear driving member is drivingly connected with the piston rod 30, and the support seat 40 is mounted with a rotating The clamping part 42, the rotating clamping part 42 is engaged with the gear driving member for transmission. When the piston rod 30 moves to the rear end of the vacuum sealing machine, the gear driving part rotates under the transmission of the piston rod 30, the rotary clamping part 42 engages with the gear driving part, and the gear driving part drives the rotary clamping part to rotate, As a result, the rotation clamping portion 42 is rotated into the hook 16 , and the rotation clamping portion 42 rotates to press the hook 16 downward.

More specifically, the gear driving member includes a connecting rod 46 and a driving gear 47 , the center position of the normal surface of one side of the driving gear 47 is rotatably connected to the support base 40 , and the eccentric position of the normal surface of the other side of the driving gear 47 is connected to the connecting rod 46 . One end of the connecting rod 46 is connected with the other end of the connecting rod 46 in a transmission connection with the front end of the piston rod 30 , and the rotating clamping part 42 is engaged with the driving gear 47 for transmission. One end of the rotary clamping portion 42 is provided with a transmission gear 45, which meshes with the driving gear 47 for transmission, and the other end of the rotary clamping portion 42 protrudes from the horizontal direction of the hook 16 with an extrusion block 44. The extrusion block 44 It is connected with the hook 16 by rotating and pressing. The top surface of the support base 40 is recessed downward to form a support portion 41 , a rotating portion 43 is arranged between the transmission gear 45 and the pressing block 44 , and the rotating portion 43 is rotatably mounted on the support portion 41 . shape to fit. The support portion 41 has the function of supporting and relatively fixing the rotating portion 43 . When the piston rod 30 moves to the rear end of the vacuum sealing machine under the action of the vacuum pump, the piston rod 30 pulls the connecting rod 46, the connecting rod 46 pushes the driving gear 47 to rotate, the driving gear 47 meshes with the transmission gear 45 for transmission, and the transmission gear 45 Rotating, thereby driving the rotating part 43 to rotate in the supporting part 41 , so that the rotating clamping part 42 rotates from a position away from the hook 16 into the hook 16 until the hook 16 is rotated and pressed.

The abutting contact surface of the pressing block 44 and the hook 16 is set as a circular arc surface. The contact surface of the extrusion block 44 when pressing the hook 16 will generate friction. If the contact surface of the extrusion block 44 and the hook 16 is an arc surface, the friction between the hook 16 and the extrusion block 44 can be reduced, so that the hook 16 The clamping connection with the pressing block 44 is smoother.

In a preferred solution, the top of the air extraction cylinder 20 is provided with an air extraction hole 22 and an air passage 23, the air passage 23 is connected with the vacuuming groove, the lower part of the air passage 23 is provided with an air outlet 24, and an air plug 25 is installed in the air passage 23. When the piston rod 30 stops at the initial position, the piston rod 30 is separated from the air plug 25, the top of the piston rod 30 is located below the air plug 25, and the air plug 25 is located at the vent port 24 to close the vent port 24, and the air passage 23 is connected to the air pump. The chamber is disconnected, and the upper cover 12 is disconnected from the base 10; when the piston rod 30 stops at the cover-locking position, the bottom surface of the air plug 25 is in contact with the top of the piston rod 30, and the top of the piston rod 30 is in active contact with the air plug 25. When the top moves and cooperates, the air plug 25 moves to the top of the air vent 24 , the air passage 23 communicates with the air extraction chamber, and the upper cover 12 is closed and connected to the base 10 . More specifically, during vacuuming, the vacuuming chamber forms a negative pressure, so as to push the piston rod 30 to move from the initial position to the locking cover position through the negative pressure; the vacuuming pipe includes a first vacuuming pipe and a second vacuuming pipe. The first end of the vacuum tube is connected to the vacuum pump, the second end of the first vacuum tube is connected to the suction hole 22 , the first end of the second vacuum tube is connected to the vacuum tank, and the second end of the second vacuum tube is connected to the air passage 23 . The vacuum tube connection structure of the utility model has a small number of components, a small number of pipes and interfaces, a short total length of the pipes, and improved vacuuming efficiency.

The air passage 23 is provided with an air passage closing spring 26 . The air passage 23 is provided with an air passage closing spring 26 , one end of the air passage closing spring 26 touches the top of the air passage 23 , the other end of the air passage closing spring 26 touches the air plug 25 , and the air passage closing spring 26 pushes against the air plug 25 . An elastic force is provided to make the air plug 25 close the air passage 23 . After the piston rod 30 moves toward the air plug 25 and pushes the air plug 25 away, the air passage 23 opens. In this preferred solution, the same vacuum pump is used for the evacuation in the evacuation tank and the evacuation cylinder 20, that is, the locking of the upper cover 12 and the base 10 and the evacuation of the evacuation tank are completed under the condition of using one vacuum pump. Work, simple structure, good effect of vacuuming and locking the cover. A push rod return spring 21 is arranged in the air extraction cylinder 20 . When the vacuum sealing machine is depressurized, the decompression pipe connected to the atmosphere is connected to the air extraction hole 22, and the decompression valve is pressed to make the air extraction cylinder 20 communicate with the atmosphere. The piston rod 30 moves toward the front end of the vacuum sealing machine, thereby pushing the gear drive to rotate the pressing block 44 of the rotary clamping part 42 to disconnect from the hook 16 , so that the upper cover 12 is disconnected from the base 10 .

The specific working process is as follows: when the piston rod 30 is at the initial position, the extrusion block 44 is separated from the hook 16, the air plug 25 is located at the air vent 24 and the air vent 24 is blocked, so that the air extraction cylinder 20 is isolated from the vacuum extraction groove, and the air extraction cylinder 20 forms an independent chamber, the vacuum pump starts to pump the air to the air extraction cylinder 20 through the air extraction hole 22, and the inside of the air extraction cylinder 20 gradually becomes negative pressure. Under the action of the negative pressure, the piston rod 30 goes to the back of the vacuum sealing machine The end direction moves, so that the extrusion block 44 is continuously rotated to approach the hook 16; with the continuous pumping of the vacuum pump, the piston rod 30 gradually moves from the initial position to the lock cover position, and the hook 16 is pressed against the rotation of the rotary clamping part 42. Moving downward gradually, the upper cover 12 and the base 10 are gradually closed. When the piston rod 30 reaches the cover-locking position, the pressing block 44 is pressed and connected with the hook 16, the upper cover 12 and the base 10 are tightened and closed, so that the vacuuming groove forms a closed space, and the top of the piston rod 30 is pressed against the air The plug 25, the air plug 25 leaves the air vent 24, so that the air extraction cylinder 20 is communicated with the vacuuming groove. At this time, the gas of the vacuuming groove enters the air extraction cylinder 20 from the air passage 23 through the air opening 24, and the gas is then passed through the air extraction hole 22. The vacuum pump is drawn out, and the vacuum cylinder 20 is kept in communication with the vacuum tank until the vacuum tank reaches the preset vacuum value, and the vacuum pump stops working. After the vacuum is completed, the vacuum sealing machine heat-seals the vacuum packaging bag to complete the vacuum packaging. .

After the vacuum packaging is completed, the vacuum sealing machine needs to be depressurized. The decompression valve communicates with the air extraction hole 22 through the decompression pipe, so that the air extraction cylinder 20 is communicated with the atmosphere, and the atmospheric pressure is restored in the air extraction cylinder 20. The piston rod 30 is in the push rod return spring 21. The air plug 25 moves back to the position of the vent 24 under the action of the airway closing spring 26, the extruding block 44 is separated from the hook 16, the upper cover 12 is released from the base 10, and the upper The cover 12 and the base 10 are in an openable state, and the vacuum packaging bag after vacuuming can be taken out at this time.

Preferably, a micro-touch switch 15 and a heating wire control circuit are installed in the base 10, the micro-touch switch 15 is connected with the heating wire control circuit, and the side surface of the piston rod 30 is recessed inward to form a trigger cavity 37, which is located in the trigger cavity 37. The inner protrusion is provided with a trigger part 36 , and the trigger part 36 is triggered and matched with the micro-touch switch 15 . The triggering part 36 is located on the side of the triggering chamber 37 close to the front end of the vacuum sealing machine. This preferred solution is applied to the situation where the vacuum packaging bag needs two heat-sealing procedures, the piston rod 30 is provided with a third position, the third position of the piston rod 30 is located between the initial position and the cap-locking position, and the piston rod 30 is located in the third position. When in position, the rotary clamping part 42 is press-fitted with the hook 16, the upper cover 12 and the machine base 10 are in a tensioned state, the top of the piston rod 30 is not in contact with the air plug 25, and the air suction cylinder 20 is not connected with the vacuum pumping groove. The air cylinder 20 is an independent chamber, the trigger part 36 is triggered and cooperated with the micro-touch switch 15, the vacuum pump stops pumping, and the micro-touch switch 15 makes the heating wire in the vacuum sealing machine heat the vacuum packaging bag for the first time through the heating wire control circuit. After the heat sealing is completed, press the pressure relief valve. The pressure relief procedure is the same as the pressure relief procedure when the piston rod 30 is in the lock cover position. Open the upper cover 12 and the machine base 10, and place the bag opening of the vacuum packaging bag that needs to be evacuated. Put it in the vacuuming tank, and the vacuum sealing machine completes the whole secondary heat sealing process by repeating the procedure of the piston rod 30 from the initial position to the lock cover position.

Embodiment 2

The main structure, principle and effect of this embodiment are the same as those of the first embodiment, which will not be repeated here. A support seat 40 and a rotary clamping part 42 are installed on the other side, and hooks 16 are installed on both sides of the upper cover 12 respectively. The rotary clamping parts 42 on both sides of the sealing machine are fixedly connected by connecting rods 48, so that the rotary clamping parts 42 on both sides can rotate synchronously. The positions of the upper pressing blocks 44 correspond to the hooks 16 respectively. The extrusion blocks 44 and the hooks 16 on both sides of the vacuum sealing machine are synchronously clamped or synchronously separated.

The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope, and the content of this description should not be construed as Limitations of the present invention.

Claims (10)

1. a kind of vacuum sealer with cover rotating locking apparatus, including upper cover (12) and base (10), upper cover (12) Rear end is articulated with base (10), is equipped with vacuum pumping pump in base (10), and the one side edge of base (10), which is provided with, vacuumizes slot, It is equipped with pump bowl (20), is movably installed with piston rod (30) in pump bowl (20), after piston rod (30) on the inside of base (10) End is installed in pump bowl (20), and the front end of piston rod (30) extends to pump bowl (20) outside, piston rod (30) and pump bowl (20) aspirating chamber is formed, slot and vacuum pumping pump is vacuumized and passes through vacuum-pumping tube respectively and connect with aspirating chamber, it is characterised in that: is wrapped Rotating locking apparatus is included, rotating locking apparatus includes rotation gear assembly and hook (16), and rotation gear assembly is arranged in piston The front end of bar (30), hook (16) are arranged in the lower surface of upper cover (12),

Aspirating chamber is provided with aspirating hole (22), and vacuum pumping pump connects aspirating hole (22),

Piston rod (30) has initial position and locking closure position, and when vacuumizing, piston rod (30) is moved to locking closure from initial position Position, when negative pressure is discharged in vacuum-pumping tube, piston rod (30) is moved to initial position from locking closure position；

When piston rod (30) stops at initial position, vacuumizes slot and be connected to aspirating chamber disconnection, rotation gear assembly and hook (16) it separates, when piston rod (30) stops at locking closure position, vacuumizes slot and be connected to aspirating chamber, rotation gear assembly and hook (16) moving rotary card press-fit.

2. a kind of vacuum sealer with cover rotating locking apparatus according to claim 1, it is characterised in that: described Rotation gear assembly includes revotating card splenium (42), and revotating card splenium (42) and described hook (16) rotary moveable card pressure connect,

The side of hook (16) towards revotating card splenium (42) offers a curved opening, and the piston rod (30) is from described initial When position is moved to the locking closure position, revotating card splenium (42) screws in from curved opening and presses on curved opening, it is described on It covers (12) and the base (10) and compresses connection；

When piston rod (30) is moved to initial position from locking closure position, revotating card splenium (42) is screwed out from curved opening, revotating card Splenium (42) is separated with hook (16), and upper cover (12) and base (10) are unclamped and connected.

3. a kind of vacuum sealer with cover rotating locking apparatus according to claim 2, it is characterised in that: described When piston rod (30) stops at the initial position, the revotating card splenium (42) is located at the front of the curved opening；

When piston rod (30) stops at the locking closure position, revotating card splenium (42), which is located inside curved opening and compresses arc, to be opened Mouthful.

4. a kind of vacuum sealer with cover rotating locking apparatus according to claim 3, it is characterised in that: described Rotating gear assembly includes support base (40), and support base (40) is fixedly installed in the front of the piston rod (30), support base (40) side rotation is connected with a gear drive, and gear drive and piston rod (30) are sequentially connected, on support base (40) The revotating card splenium (42), revotating card splenium (42) and gear drive engaged transmission are installed.

5. a kind of vacuum sealer with cover rotating locking apparatus according to claim 4, it is characterised in that: described Gear drive includes connecting rod (46) and driving gear (47), drives the center location of the side normal plane of gear (47) and the branch Seat (40) rotation connection is supportted, drives the eccentric position of the other side normal plane of gear (47) to connect with one end of connecting rod (46), connecting rod (46) front end of the other end and the piston rod (30) is sequentially connected, and the revotating card splenium (42) is nibbled with driving gear (47) Close transmission.

6. a kind of vacuum sealer with cover rotating locking apparatus according to claim 5, it is characterised in that: described One end of revotating card splenium (42) is provided with transmission gear (45), and transmission gear (45) engages biography with the driving gear (47) Dynamic, the other end of revotating card splenium (42) is provided with a crushing block (44) to the horizontal direction protrusion of the hook (16), is squeezed Block (44) and hook (16) revotating card pressure connect, and the contact surface that crushing block (44) is contacted with hook (16) is arc surface.

7. a kind of vacuum sealer with cover rotating locking apparatus according to claim 6, it is characterised in that: described The top surface of support base (40), which is recessed downwards, forms a support portion (41), between the transmission gear (45) and the crushing block (44) It is provided with rotating part (43), rotating part (43) rotary moveable is installed on support portion (41), the shape and the rotation of support portion (41) The shape of transfer part (43) is adapted.

8. a kind of vacuum sealer with cover rotating locking apparatus according to any one of claims 1 to 7, feature It is: is provided with the aspirating hole (22) and air passage (23), air passage (23) and the pumping at the top of the pump bowl (20) Vacuum tank connection, the lower part of air passage (23) are provided with blow vent (24), are equipped with vent plug (25) in air passage (23)；

When the piston rod (30) stops at the initial position, piston rod (30) is separated with vent plug (25), piston rod (30) Top is located at the lower section of vent plug (25), and vent plug (25) is located at closing blow vent (24), air passage (23) and institute at blow vent (24) It states aspirating chamber and disconnects connection, the upper cover (12) and the base (10), which are unclamped, to be connected；

When piston rod (30) stops at the locking closure position, the bottom surface of vent plug (25) is contacted with the top of piston rod (30), piston Mobile cooperation is supported in the top of bar (30) and vent plug (25) activity, and vent plug (25) is moved to the top of blow vent (24), air passage (23) it is connected to aspirating chamber, upper cover (12) and base (10) closure connect.

9. a kind of vacuum sealer with cover rotating locking apparatus according to claim 8, it is characterised in that: taking out The aspirating chamber forms negative pressure when vacuum, pushes the piston rod (30) to be moved to from the initial position by negative pressure to realize The locking closure position；

The vacuum-pumping tube includes the first vacuum-pumping tube and the second vacuum-pumping tube, described in the first end connection of the first vacuum-pumping tube Vacuum pumping pump, the second end of the first vacuum-pumping tube connect the aspirating hole (22), described in the first end connection of the second vacuum-pumping tube Slot is vacuumized, the second end of the second vacuum-pumping tube connects the air passage (23).

10. a kind of vacuum sealer with cover rotating locking apparatus according to claim 9, it is characterised in that: institute It states and is provided with push rod reset spring (21) in pump bowl (20), the top of pump bowl (20) is supported in one end of push rod reset spring (21) The other end in face, push rod reset spring (21) supports the top of the piston rod (30)；

Air flue closing spring (26) is provided in air passage (23), air passage (23) is supported in one end of air flue closing spring (26) The other end on top, air flue closing spring (26) supports vent plug (25)；

Micro-touch switch (15) and heating wire control circuit are installed, Micro-touch switch (15) and heating wire control in the base (10) Circuit connection, the side of the piston rod (30) are recessed inwardly to form a triggering chamber (37), in triggering chamber (37) projecting inward setting Have trigger unit (36), trigger unit (36) and Micro-touch switch (15) triggering cooperate.