阅读说明：本技术 一种负压扣合装置及抽真空塑封机 (Negative pressure buckling device and vacuumizing plastic packaging machine ) 是由 黄斌成 于 2020-05-09 设计创作，主要内容包括：本发明公开一种负压扣合装置及抽真空塑封机,其中负压扣合装置包括：基座,基座安装于抽真空塑封机的下壳组件,其设有若干滑动部；浮动座,浮动座设有与若干滑动部匹配的配合部,通过匹配滑动部与配合部,浮动座能够在外力的作用下基于基座直线往复运动；伸缩囊,伸缩囊呈环状,伸缩囊的上端连接基座,伸缩囊的下端连接浮动座,以使伸缩囊、基座以及浮动座形成第一容腔,第一容腔基于伸缩囊的形变其体积可变；基座还设有与第一容腔连通的抽吸部,抽吸部用于连接预设的抽吸装置,以使第一容腔内的气压值低于大气压力值,从而使浮动座在第一容腔的内外压力差的作用下基于基座直线位移以接近基座。(The invention discloses a negative pressure buckling device and a vacuumizing plastic packaging machine, wherein the negative pressure buckling device comprises: the base is arranged on a lower shell assembly of the vacuumizing plastic packaging machine and is provided with a plurality of sliding parts; the floating seat is provided with a matching part matched with the sliding parts, and can linearly reciprocate based on the base under the action of external force by matching the sliding parts with the matching part; the telescopic bag is annular, the upper end of the telescopic bag is connected with the base, and the lower end of the telescopic bag is connected with the floating seat, so that the telescopic bag, the base and the floating seat form a first containing cavity, and the first containing cavity has a variable volume based on the deformation of the telescopic bag; the base is also provided with a suction part communicated with the first accommodating cavity, and the suction part is used for being connected with a preset suction device so that the air pressure value in the first accommodating cavity is lower than the atmospheric pressure value, and the floating seat is linearly displaced to be close to the base based on the inner and outer pressure difference of the first accommodating cavity.)

1. The utility model provides a negative pressure lock joint device for evacuation plastic packaging machine, its characterized in that includes:

the base is arranged on a lower shell assembly of the vacuumizing plastic packaging machine and is provided with a plurality of sliding parts;

the floating seat is provided with a matching part matched with the sliding parts, and can linearly reciprocate under the action of external force based on the base by matching the sliding parts with the matching part;

the telescopic bag is annular, the upper end of the telescopic bag is connected with the base, and the lower end of the telescopic bag is connected with the floating seat, so that the telescopic bag, the base and the floating seat form a first cavity, and the first cavity has a variable volume based on the deformation of the telescopic bag;

the base is further provided with a suction part communicated with the first accommodating cavity, and the suction part is used for being connected with a preset suction device so that the air pressure value in the first accommodating cavity is lower than the atmospheric pressure value, and therefore the floating seat is close to the base based on the linear displacement of the base under the action of the internal and external pressure difference of the first accommodating cavity.

2. The negative pressure fastening device of claim 1, wherein the sliding portion comprises a guide hole and the mating portion comprises a guide post.

3. The negative pressure fastening device according to claim 2, wherein the base has a groove, a fixing post is disposed in the groove, the fixing post has the guiding hole, a spring is disposed around the fixing post, and one end of the spring abuts against the base and the other end abuts against the floating seat, so that the floating seat is away from the base in a predetermined state.

4. The negative pressure buckling device as claimed in claim 1, wherein a first folded edge is provided at an upper end of the bellows, the first folded edge extends towards an inner side of the bellows based on a sidewall of the bellows, the floating seat is provided with a first sealing groove and a first sealing plate, the first sealing groove is matched with the first folded edge, and the first sealing plate is detachably connected with the floating seat to elastically abut against the first folded edge in the first sealing groove.

5. The negative pressure fastening device of claim 4, wherein a second flange extends downward from a side of the first flange away from the side wall of the bellows, and a sealing plate protruding ring matched with the first sealing groove is arranged on a side of the first sealing plate connected with the floating seat; the upper end face of the sealing plate convex ring is abutted against the first folding edge, the periphery of the sealing plate convex ring is abutted against the inner wall of the telescopic bag and the inner periphery of the sealing plate convex ring is abutted against the second folding edge, so that the side wall of the telescopic bag, the first folding edge and the second folding edge are elastically fixed in the first sealing groove in a deformation mode.

6. The negative pressure fastening device of claim 1, wherein the lower end of the bellows is provided with a third flange extending outward of the bellows based on a sidewall of the bellows, the base is provided with a flange positioning boss and a flange positioning snap ring, the flange positioning boss is matched with the third flange, and the positioning snap ring is fastened to the base so that the third flange elastically abuts against the flange positioning boss.

7. The negative pressure fastening device of claim 6, wherein a fourth flange extends downward from a lower end surface of the third flange, the flange positioning boss is further provided with a flange fastening groove matched with the fourth flange, the base is provided with a plurality of fastening ring fasteners distributed around the periphery of the bellows, and fastening hooks of the fastening ring fasteners fasten the positioning fastening ring so as to enable the fastening ring to abut against the third flange.

8. The negative pressure buckling device as claimed in claim 1, wherein the floating seat is provided with a limiting post facing the base, the limiting post can abut against a lower casing component of the vacuum plastic packaging machine to keep the floating seat at a preset distance from the base, the cross section of the end of the bellows is of a runway shape and comprises two parallel straight edges and two arc edges connecting the ends of the two straight edges, and filter cotton matched with the shape of the bellows is arranged in the bellows.

9. A vacuum plastic packaging machine is characterized by comprising:

the negative pressure fastening device of any one of claims 1-8;

the upper shell assembly is clamped with the floating seat and comprises a first vacuum groove formed in the upper shell assembly and a first heating component located on one side of the first vacuum groove, and a first sealing rubber ring is arranged on the periphery of the first vacuum groove;

the base is arranged on the lower shell assembly, the lower shell assembly comprises a second vacuum groove formed in the lower shell assembly and a second heat generating component positioned on one side of the second vacuum groove, and a second sealing rubber ring is arranged on the periphery of the second vacuum groove;

a suction device in communication with the suction portion and the second vacuum groove;

the suction device can suck the gas in the first containing cavity, so that the upper shell assembly is close to the lower shell assembly, the first vacuum groove and the second vacuum groove form a packaging bag suction cavity, and the first heating component and the second heating component respectively abut against two sides of a bag body of a packaging bag to be sealed.

10. The vacuum plastic packaging machine according to claim 9, wherein a plurality of spaced tabs are disposed on a side of the floating seat connected to the upper housing assembly, and the upper housing assembly has a groove matching the tabs.

Technical Field

The invention relates to plastic packaging equipment, in particular to a negative pressure buckling device and a vacuumizing plastic packaging machine.

Background

The vacuumizing plastic packaging machine generally comprises an upper shell assembly and a lower shell assembly which are mutually buckled, a closed space is formed between the upper shell assembly and the lower shell assembly, a packaging bag to be vacuumized is clamped between the upper shell and the lower shell, a bag opening of the packaging bag is positioned in the closed space, and the closed space is connected with a vacuumizing device and is pumped out of the closed space, so that the vacuumizing process of the packaging bag can be completed.

The upper and lower shell assemblies of the upper and lower shells of the existing vacuumizing plastic packaging machine are buckled by the left and right side lock catches, the upper shell assembly is pressed by two hands of an operator to be attached to the lower shell assembly, the vacuumizing and plastic packaging effect of the manual operation mode is poor, and the vacuumizing can not be completed due to the fact that the manual operation mode is improper.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a negative pressure buckling device and a vacuumizing plastic packaging machine.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a negative pressure lock joint device for evacuation plastic packaging machine includes: the base is arranged on a lower shell assembly of the vacuumizing plastic packaging machine and is provided with a plurality of sliding parts; the floating seat is provided with a matching part matched with the sliding parts, and can linearly reciprocate under the action of external force based on the base by matching the sliding parts with the matching part; the telescopic bag is annular, the upper end of the telescopic bag is connected with the base, and the lower end of the telescopic bag is connected with the floating seat, so that the telescopic bag, the base and the floating seat form a first cavity, and the first cavity has a variable volume based on the deformation of the telescopic bag; the base is further provided with a suction part communicated with the first accommodating cavity, and the suction part is used for being connected with a preset suction device so that the air pressure value in the first accommodating cavity is lower than the atmospheric pressure value, and therefore the floating seat is close to the base based on the linear displacement of the base under the action of the internal and external pressure difference of the first accommodating cavity.

Preferably, the sliding portion includes a guide hole, and the fitting portion includes a guide post.

Preferably, the base is provided with a groove, a fixing column is arranged in the groove, the fixing column is provided with the guide hole, a spring penetrates through the periphery of the fixing column, one end of the spring abuts against the other end of the base and abuts against the floating seat, and therefore the floating seat is far away from the base in a preset state.

Preferably, the upper end of bellows is equipped with first hem, first hem based on the lateral wall of bellows to the inboard of bellows extends, float the seat and be equipped with first seal groove, first closing plate, first seal groove with first hem matches, first closing plate with float the seat can dismantle to be connected with first hem elasticity butt in the first seal groove.

Preferably, a second folding edge extends downwards from one side of the first folding edge, which is far away from the side wall of the telescopic bag, and a sealing plate convex ring matched with the first sealing groove is arranged on one side of the first sealing plate, which is connected with the floating seat; the upper end face of the sealing plate convex ring is abutted against the first folding edge, the periphery of the sealing plate convex ring is abutted against the inner wall of the telescopic bag and the inner periphery of the sealing plate convex ring is abutted against the second folding edge, so that the side wall of the telescopic bag, the first folding edge and the second folding edge are elastically fixed in the first sealing groove in a deformation mode.

Preferably, the lower extreme of bellows is equipped with the third hem, the third hem based on the lateral wall of bellows to the outside of bellows extends, the base is equipped with hem location boss and hem location snap ring, hem location boss with the matching of third hem, location snap ring joint in the base is so that third hem elasticity butt in hem location boss.

Preferably, the lower end face of the third folded edge extends downwards to form a fourth folded edge, the folded edge positioning boss is further provided with a folded edge clamping groove matched with the fourth folded edge, the base is provided with a plurality of clamping ring buckles distributed around the periphery of the telescopic bag, and the clamping hooks of the clamping ring buckles are clamped with the positioning clamping ring so that the clamping ring abuts against the third folded edge.

Preferably, the floating seat is provided with a limiting column facing the base, the limiting column can abut against a lower shell assembly of the vacuum-pumping plastic packaging machine so that the floating seat and the base keep a preset distance, the cross section of the end part of the telescopic bag is in a runway shape and comprises two parallel straight edges and two arc edges connecting the end parts of the two straight edges, and filter cotton matched with the shape of the telescopic bag is arranged in the telescopic bag.

A vacuum plastic packaging machine comprises: the negative pressure buckling device; the upper shell assembly is clamped with the floating seat and comprises a first vacuum groove formed in the upper shell assembly and a first heating component located on one side of the first vacuum groove, and a first sealing rubber ring is arranged on the periphery of the first vacuum groove; the base is arranged on the lower shell assembly, the lower shell assembly comprises a second vacuum groove formed in the lower shell assembly and a second heat generating component positioned on one side of the second vacuum groove, and a second sealing rubber ring is arranged on the periphery of the second vacuum groove; a suction device in communication with the suction portion and the second vacuum groove; the suction device can suck the gas in the first containing cavity, so that the upper shell assembly is close to the lower shell assembly, the first vacuum groove and the second vacuum groove form a packaging bag suction cavity, and the first heating component and the second heating component respectively abut against two sides of a bag body of a packaging bag to be sealed.

Preferably, one side of the floating seat connected with the upper shell assembly is provided with a plurality of pull buckles arranged at intervals, and the upper shell assembly is provided with buckle grooves matched with the pull buckles.

The invention has the beneficial effects that the invention provides a negative pressure buckling device, which comprises: the base is arranged on a lower shell assembly of the vacuumizing plastic packaging machine and is provided with a plurality of sliding parts; the floating seat is provided with a matching part matched with the sliding parts, and can linearly reciprocate under the action of external force based on the base by matching the sliding parts with the matching part; the telescopic bag is annular, the upper end of the telescopic bag is connected with the base, and the lower end of the telescopic bag is connected with the floating seat, so that the telescopic bag, the base and the floating seat form a first cavity, and the first cavity has a variable volume based on the deformation of the telescopic bag; the base is further provided with a suction part communicated with the first accommodating cavity, and the suction part is used for being connected with a preset suction device so that the air pressure value in the first accommodating cavity is lower than the atmospheric pressure value, and therefore the floating seat is close to the base based on the linear displacement of the base under the action of the internal and external pressure difference of the first accommodating cavity. The vacuum-pumping plastic packaging machine using the negative pressure buckling device has the following advantages: the upper shell assembly and the lower shell assembly of the vacuumizing plastic packaging machine do not need manual laminating of operators, automatic laminating of the upper shell assembly and the lower shell assembly can be completed through the built-in suction part of the vacuumizing plastic packaging machine, automatic laminating of the upper shell assembly and the lower shell assembly is achieved through negative pressure, the consistency of the force of laminating at every time can be guaranteed only by presetting a negative pressure value, and the consistency of the effect of sealing the packaging bag at every time is guaranteed.

Drawings

The invention is further described below with reference to the accompanying drawings.

Fig. 1 is a schematic view of an overall structure of a vacuum plastic packaging machine according to embodiment 1 of the present invention.

Fig. 2 is an exploded schematic view of the overall structure of the left-air plastic packaging machine in embodiment 1 of the present invention.

Fig. 3 is an exploded view of the negative pressure fastening device according to embodiment 1 of the present invention.

Fig. 4 is a schematic cross-sectional view of a negative pressure fastening device in accordance with an embodiment 1 of the present invention.

Fig. 5 is a schematic view of the overall structure of the floating seat in embodiment 1 of the present invention.

Fig. 6 is a schematic view of the overall structure of the bellows in embodiment 1 of the present invention.

FIG. 7 is a schematic view of the overall structure of the hem-positioning snap ring in accordance with embodiment 1 of the present invention.

Fig. 8 is a schematic view of the entire structure of the base in embodiment 1 of the present invention.

Description of the reference numerals

Numbering	Name (R)	Numbering	Name (R)
				1	Negative pressureFastening device	125	Limiting column
11	Base seat	126	Pull buckle
				111	Suction part	13	Telescopic bag
112	Guide hole	131	A first chamber
				113	Groove	132	First folded edge
114	Fixing column	133	Second flange
				115	Spring	134	Third folding edge
116	Flanging positioning boss	135	The fourth folded edge
				117	Edge folding positioning clasp	2	Upper casing assembly
118	Edge folding clamping groove	21	A first vacuum tank
				119	Snap ring buckle	22	First heat-generating component
120	Clamp hook	23	First sealing rubber ring
				12	Floating seat	24	Buckle slot
121	Guide post	3	Lower casing assembly
				122	First seal groove	31	Second vacuum tank
123	First sealing plate	32	Second heat generating component
				124	Sealing plate convex ring	33	Second sealing rubber ring

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.