A sealing device for packaging box

Abstract

The present invention relates to a packaging box capping device, wherein the station bracket of the capping device is sequentially provided with an outer cover deviation correction station, an outer cover deflection guiding and outer cover deflection maintaining inner cover flipping station, an outer cover guide flipping station and an adhesive tape cutting station; the front end of the outer cover deviation correction station is provided with an outer cover deviation correction component; the front end of the outer cover deflection guiding and outer cover deflection maintaining inner cover flipping station is provided with an inner cover chasing flipping block, and the rear end is provided with an inner cover fixed flipping block; the rear side wall of the inner cover fixed flipping block is provided with a horizontal tail plate, and the tail plate terminal is a certain distance (about 30mm) from the horizontal starting end of the outer cover guide flap plate; the upper part of the tail plate of the inner cover fixed flipping block is provided with a first outer cover guide flap plate and a second outer cover guide flap plate which are oppositely positioned and respectively provided. The present invention can perform fully automatic closed packaging box capping for large household electrical appliances, and through fully automatic flipping and sealing with both ends of the tape wrapped, the high efficiency and low cost operation of the packaging assembly line is ensured, and the packaging stability of the obtained product is good.

Description

Technical Field

[0001] The invention relates to the field of product packaging, and in particular to a capping device for packaging boxes of household electrical appliances such as televisions, refrigerators, air conditioners, washing machines, and freezers. Background Art

[0002] With the development of science and technology and the improvement of people's living standards, household appliances such as televisions, refrigerators, air conditioners, washing machines, and freezers have been more and more widely used. With the increase in market demand and product output, how to improve the packaging efficiency and packaging quality of these household appliances has also become a hot topic for technical personnel in this field.

[0003] The outer packaging boxes of household appliances need to have an opening to facilitate the loading of products and other parts. For small products, the packaging method adopted is to put the product into the packaging box through the opening. For large and heavy products, the packaging method adopted is to put the outer packaging box on or around the outside of the product, and then put other protective parts between the outer box and the product. For the above situations, except for a few special cases due to actual needs, it is generally necessary to flip the flap on the outer packaging box of the product and seal the flipped flap.

[0004] The sealing methods in the prior art mainly include the following:

[0005] 1. Manual capping and capping, which uses fully manual flipping of the inner and outer covers, and manually operating the tape cutter to paste and cut the tape;

[0006] 2. Use a hot melt adhesive capping machine to cap the top. This method uses a flip plate to flip the inner cover of the packaging box, then applies hot melt adhesive, and then uses a flip plate to flip the outer cover and press it onto the inner cover;

[0007] 3. Use multiple continuous close-fitting tape capping machines for capping. This method uses a flip plate to flip the inner and outer covers, and then uses tape to continuously stick multiple products, and then cuts the tape.

[0008] For the above-mentioned sealing methods, they have the following shortcomings:

[0009] Manual capping has high labor costs and low efficiency. For products with large cross-sections, two operators may even be needed to cooperate in capping. The entire packaging line needs to reduce the flow speed to ensure that there is enough time for manual capping. If the line speed is too fast, workers will need to run back and forth a lot, and the sealing effect is difficult to ensure. In particular, when high and low products are mixed on the production line, operators need to adjust to the corresponding height of the operating table to operate, which further reduces the operating efficiency.

[0010] For hot melt adhesive capping machines or multi-piece continuous close-fitting tape capping machines, they all need to use a flip plate to flip the cover. Because the flipping process requires the inner cover to be flipped first and then the outer cover, the flip plate cannot flip the cover in a special or abnormal state, such as the outer cover tilting inward or the inner cover leaning against the two ends of the outer cover.

[0011] In addition, for the hot melt adhesive capping machine, in addition to the fact that the flip plate is difficult to ensure the smooth flipping of the cover body, there are also the following problems: the hot melt adhesive is pasted between the inner and outer flaps, which only prevents the inner and outer flaps from opening before bundling, and cannot seal the seams of the outer covers and has no dust-proof effect; the seams of the covers are exposed, and when bundling, the areas where the strapping tape does not pass will be propped up due to the squeezing force of the bundle, which is not conducive to multi-layer stacking.

[0012] Finally, for the multi-piece continuous close-fitting tape capping machine, in addition to the difficulty of the flip plate to ensure the smooth flipping of the cover body, there are also the following problems: since large products on the assembly line cannot be guaranteed to be close to each other, multiple close-fitting continuous capping tapes are not suitable for large products standing on the assembly line, and are mainly used for small products packaged on mobile operating tables; and, this method of tape pasting requires controlling the stroke of the tape cutter to paste different specifications and lengths to solve the problem of seams. In addition, the reserved length of the tape after pasting and cutting is very short, and the two ends of the outer flap cannot be wrapped and pasted continuously and closely. Summary of the invention

[0013] In order to solve the above-mentioned deficiencies in the prior art, the present invention provides a device capable of sealing the tops of packaging boxes of large household electrical appliances such as televisions, refrigerators, air conditioners, washing machines, freezers, etc.

[0014] The present invention is achieved through the following technical solutions.

[0015] The present invention provides a packaging box capping device, on which a station bracket of the capping device is sequentially provided with an outer cover deviation correction station, an outer cover deviation guiding and outer cover deviation maintaining inner cover flipping station, an outer cover flipping guiding station and an adhesive tape sticking and cutting station; the outer cover deviation correction station can correct the deflected position of the outer cover; the outer cover deviation guiding and outer cover deviation maintaining inner cover flipping station props up the outer cover and flips the inner cover; the outer cover flipping guiding station flips the outer cover; and the adhesive tape sticks adhesive tape on the flipped inner cover and the outer cover.

[0016] Furthermore, the workstation bracket is provided with a plurality of spacing adjustment slide bars, and the group of outer cover guide plates and outer cover guide flaps slide back and forth along the spacing adjustment slide bars; the spacing adjustment slide bars are connected to the corresponding workstation bracket in the corresponding workstation.

[0017] Furthermore, an outer cover correction component is provided at the front end of the outer cover correction station; an inner cover chasing block is provided at the front end of the outer cover guiding and outer cover maintaining inner cover flipping station, and an inner cover fixed flipping block is provided at the rear end, and the inner cover chasing block can rotate and move closer to or away from the direction of the inner cover fixed flipping block; the outer cover flip guiding station is provided with a first outer cover guide flap plate and a second outer cover guide flap plate that cooperate with each other.

[0018] Furthermore, an inner cover fixed flap block tail plate connected to the rear side wall of the inner cover fixed flap block is horizontally arranged at the front end of the outer cover guide station; the first outer cover guide plate and the second outer cover guide plate are arranged above the inner cover fixed flap block tail plate.

[0019] Furthermore, a reset drive rod bracket and an inner cover chasing block slide rod are provided on the outer cover guiding and outer cover maintaining inner cover flipping stations, and a reset drive rod is provided on the reset drive rod bracket; the inner cover chasing block can rotate under the action of the reset drive rod, and can slide back and forth along the inner cover chasing block slide rod.

[0020] Furthermore, an outer cover guide plate is provided on the outer cover guide and outer cover deflection maintaining and inner cover flipping stations; the outer cover guide plate includes a left outer cover guide plate and a right outer cover guide plate respectively arranged at both ends of the station bracket; the upper end surface distance between the left outer cover guide plate and the right outer cover guide plate gradually increases from the end close to the outer cover correction station to the end close to the outer cover guiding and flipping station, and then maintains a constant distance, and the length of the outer cover guide plate maintaining a constant distance is the length of the outer flip cover.

[0021] Furthermore, rollers are provided at the inner cover chasing flip block head end of the inner cover chasing flip block and the inner cover fixed flip block head end of the inner cover fixed flip block.

[0022] Furthermore, the distance between the upper end faces of the outer cover guide flaps at the beginning is 15 mm greater than the distance between the upper end faces of the outer cover guide deflector at the end, and then the distance between the upper end faces of the two groups of outer cover guide flaps is gradually reduced until the width of the outer cover guide flaps is completely horizontal.

[0023] Furthermore, the tape sticking and cutting station is equipped with a tape driving assembly and a tape pasting assembly that can rotate under the drive of the tape driving assembly; the tape pasting assembly includes an interconnected tape anti-slipping fixing frame, a sticking and pressing roller, cutting teeth and a cutting limiting support foot; the tape driving assembly includes a support shaft passing through the tape anti-slipping fixing frame, a brake rod connected to the support shaft, a brake rod return spring and a brake rod pushing wedge block arranged at the end of the brake rod, and a push spring fixed on a push spring support plate and capable of driving the sticking and cutting device to rotate.

[0024] Furthermore, a sticky push roller is provided at the rear end of the cutting limit support leg, and the sticky push roller can reciprocate up and down under the action of the push roller pushing the telescopic rod, and the side wall of the push roller pushing the telescopic rod is connected to a push roller horizontally reciprocating driving telescopic rod, and the push roller pushing the telescopic rod is suspended on the push roller slide.

[0025] The beneficial effects of the present invention are as follows.

[0026] First, the fully automatic capping device provided by the present invention can realize fully automatic flapping and sealing with both ends glued. The capping device and capping method of the present invention are generally applicable to packaging boxes with two pairs of four flaps for capping, and are particularly suitable for capping packaging boxes of large and heavy products such as televisions, refrigerators, air conditioners, washing machines, and freezers.

[0027] In addition, through the technical solution of the present invention, the flip cover of the packaging box can be corrected, the outer cover can be guided, the inner cover can be flipped, and the outer cover can be guided in sequence. Then, the seam tape can be automatically pasted on the product as it moves. The present invention automatically cuts the two ends of the tape for a single product and automatically pushes the wrapping tape, thereby realizing fully automatic closure of the top of the packaging box.

[0028] Specifically, the technical solution of the present invention can correct the deviation of the outer cover in various states, so that it can give way to ensure the smooth flipping of the inner cover. The technical solution of the present invention solves the technical problem that the inner cover rebounds and tilts during the flipping process of the outer cover, affecting the flipping of the outer cover. The technical solution of the present invention does not require line stop operation when flipping the cover. The technical solution of the present invention allows both ends of the tape to be glued, and can achieve tape cutting and continuous gluing of a single product.

[0029] In summary, the technical solution of the present invention can fully automatically seal the top of the packaging box for large household appliances. Through the fully automatic flip-top and sealing with both ends glued, the high efficiency and low cost operation of the packaging line is guaranteed, and the packaging stability of the obtained products is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention, wherein the drawings are only used to illustrate some embodiments of the present invention, but not to limit all embodiments of the present invention thereto.

[0031] Figure 1 : A schematic diagram of a flattened packaging box according to an embodiment of the present invention;

[0032] Figure 2 : A first schematic diagram of the capping step of a packaging box according to an embodiment of the present invention;

[0033] Figure 3 : A second schematic diagram of the capping step of an embodiment of the present invention;

[0034] Figure 4 : A first schematic diagram of a capping device according to an embodiment of the present invention;

[0035] Figure 5 : A second schematic diagram of the capping device according to an embodiment of the present invention;

[0036] Figure 6 : Schematic diagram of the steps of the deviation correction process according to an embodiment of the present invention;

[0037] Figure 7 : Schematic diagram of the working of the correction component of an embodiment of the present invention;

[0038] Figure 8 : Schematic diagram of the steps for flipping the inner cover and the outer cover of the packaging box according to the embodiment of the present invention;

[0039] Fig. 9 : A schematic diagram of the structure of the inner cover fixed flap and the inner cover fixed flap tail plate according to an embodiment of the present invention;

[0040] Fig.10 : A cross-sectional schematic diagram of the inner cover fixing flap according to an embodiment of the present invention;

[0041] Fig.11 : A schematic diagram of the coordination of the inner cover follow-up flap and the inner cover fixed flap according to an embodiment of the present invention;

[0042] Fig.12 : Schematic diagram of the working steps of the inner cover tracking flip block and the inner cover fixed flip block according to an embodiment of the present invention;

[0043] Fig.13 : A schematic diagram of the shape of the outer cover deflector plate of an embodiment of the present invention;

[0044] Fig.14 : Schematic diagram of the shapes of the first outer cover guide flap and the second outer cover guide flap according to an embodiment of the present invention;

[0045] Fig.15 : A first stereoscopic schematic diagram of a tape dispenser according to an embodiment of the present invention;

[0046] Fig.16 : A second stereoscopic schematic diagram of the tape cutter according to an embodiment of the present invention;

[0047] Fig.17 : A three-dimensional schematic diagram of a push spring and a push spring support plate according to an embodiment of the present invention;

[0048] Fig.18 : Schematic diagram of the working steps of the tape cutter according to an embodiment of the present invention.

[0049] Reference numerals:

[0050] Outer cover deviation correction station-1, outer cover deviation correction assembly-11, outer cover deviation guiding and outer cover deviation maintaining inner cover flipping station-2, outer cover deviation guiding plate-21, inner cover flipping block-22, inner cover flipping block head-221, reset drive rod-23, reset drive rod bracket-24, inner cover flipping block slide-25, inner cover fixed flipping block-26, inner cover fixed flipping block head-261, outer cover flipping guide station-3, inner cover fixed flipping block tail plate-31, first outer cover flipping guide plate-32, second outer cover flipping guide plate-33, tape cutting station-4, tape cutter-42, tape cutter mounting frame-4201, push spring-42 02, push spring support plate-4203, adhesive tape anti-slip fixing frame-4204, force-bearing tail wall-4205, brake rod-4206, support shaft-4207, flat air outlet-4208, sticking and pressing roller-4209, cutting teeth-4210, cutting limit support foot-4211, sticking push roller-4212, push roller driving telescopic rod-4213, push roller reset driving telescopic rod-4214, push roller slide-4215, brake rod spring-4216, brake rod pushing wedge-4217, work station bracket-5, spacing adjustment slide rod-51, packaging box-B, inner cover-B1, outer cover-B2. DETAILED DESCRIPTION

[0051] The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "an" do not necessarily indicate a quantity limitation. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connected" or "connected" and similar words are not limited to direct connections, but also include indirect connections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0052] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention.

[0053] Attached Figure 1 A flat schematic diagram of a packaging box B commonly used in the prior art for packaging large household appliances is shown, with Figure 2 The steps of sealing the top of the packaging box B are shown. When the packaging box B is not sealed, its inner cover B1 and outer cover B2 are all erected, and the upper edges are flush. When sealing the top, first turn the inner cover B1 inwards, then turn the outer cover B2 inwards, and finally seal them with tape, hot melt adhesive and other materials. Figure 3As shown, in addition to the normal state of neatly arranged vertical rows, the packaging box B may also present a special situation with abnormal angles such as the inner cover B1 tilting inwards inside the outer cover B2 or the outer cover B2 tilting inwards into the inner cover B1 before being capped.

[0054] In order to save labor costs, ensure that a cover with an abnormal angle can be smoothly turned over and closed, and ensure that the packaging box B can be continuously and stably adhered with tape, the present invention provides a capping device for the packaging box.

[0055] See attached Figure 4-5 , the station support 5 of the capping device is sequentially provided with an outer cover deviation correction station 1, an outer cover deviation guiding and outer cover deviation-maintaining inner cover flipping station 2, an outer cover guide flipping station 3 and a tape sticking and cutting station 4. The outer cover deviation correction station 1 is used to correct the outer cover B2. The outer cover B2 is stretched open at the outer cover deviation guiding and outer cover deviation-maintaining inner cover flipping station 2 to avoid the inner cover B1. The inner cover B1 is flipped inward to a horizontal position (not necessarily 90°) at the outer cover deviation guiding and outer cover deviation-maintaining inner cover flipping station 2. The inner cover B1 is pressed at the outer cover guide flipping station 3 to avoid the outer cover B2. The outer cover B2 is flipped inward to a horizontal position at the outer cover guide flipping station 3. The outer cover B2 and the inner cover B1 are pressed and taped at the tape sticking and cutting station 4 at the same time. The specific structure and connection relationship of each station are as follows:

[0056] The outer cover deviation correction station 1, the outer cover deviation guiding and outer cover deviation maintaining inner cover flipping station 2, the outer cover flipping guiding station 3 and the tape sticking and cutting station 4 are arranged on the station bracket 5, and the station bracket 5 is provided with a plurality of spacing adjustment slide bars 51, and the deflection guide plate group and the flipping guide plate group can slide back and forth on the slide bars; the spacing adjustment slide bar 51 is interconnected with at least one of the outer cover deviation correction station 1, the outer cover deviation guiding and outer cover deviation maintaining inner cover flipping station 2, the outer cover flipping guiding station 3 and the tape sticking and cutting station 4, and the mixed production of products with different width specifications can be met by adjusting the spacing between the two groups of plates.

[0057] The front end of the outer cover guiding and outer cover deflection maintaining inner cover flipping station 2 is provided with an inner cover tracking flipping block 22, and the rear end is provided with an inner cover fixed flipping block 26; the front end of the outer cover guiding station 3 is provided with an inner cover fixed flipping block horizontal tail plate 31 connected to the rear side wall of the inner cover fixed flipping block 26; the upper part of the inner cover fixed flipping block tail plate 31 has a first outer cover guide flap plate 32 and a second outer cover guide flap plate 33 which are positioned opposite to each other; the front end of the tape cutting station 4 is connected to the first outer cover guide flap plate 32 and the second outer cover guide flap plate 33.

[0058] A pair of outer cover correction components 11 are provided at the front end of the outer cover correction station 1. The outer cover correction components 11 include two groups of elliptical structures. The two groups of elliptical structures can move synchronously and symmetrically back and forth and swing around the axis, so as to achieve mutual approach or distance, as well as correction of the outer cover.

[0059] The outer cover guiding and outer cover deflection maintaining inner cover flipping station 2 is provided with a reset drive rod bracket 24 and an inner cover chasing flipping block slide bar 25, and the reset drive rod bracket 24 is provided with a reset drive rod 23; the inner cover chasing flipping block 22 can rotate under the action of the reset drive rod 23, and can slide back and forth along the inner cover chasing flipping block slide bar 25, and the inner cover B1 transported to the guiding station later can be flipped through the forward and backward movement of the inner cover chasing flipping block 22. The outer cover guiding and outer cover maintaining inner cover flipping station 2 is also provided with an outer cover guiding Plate 21, the outer cover guide plate 21 includes a left outer cover guide plate and a right outer cover guide plate respectively arranged at the two ends of the station bracket 5, and the distance between the left outer cover guide plate 21 and the right outer cover guide plate 21 gradually increases from the end close to the outer cover correction station 1 to the end close to the outer cover guide station 3, and then maintains a constant distance. The length of the outer cover guide plate that maintains a constant distance is the length of the outer flip cover. Through the above structure, it can be ensured that the outer cover B2 can effectively avoid the inner cover B1, and ensure that they will not affect each other.

[0060] The inner cover fixed flip block 26 can flip and block the inner cover B1 which is first conveyed to the deflection guide station. When the inner cover chasing flip block 22 moves to a position in contact with or close to the inner cover fixed flip block 26, the two inner covers B1 have completed the flipping and are pressed, and then are conveyed to the outer cover guiding station 3. In some preferred embodiments of the present invention, the inner cover chasing flip block head end 221 of the inner cover chasing flip block 22 and the inner cover fixed flip block head end 261 of the inner cover fixed flip block 26 are provided with rollers, and the rollers are installed in the arc-shaped groove of the inner cover chasing flip block head end 221 or the inner cover fixed flip block head end 261, wherein the roller axis and the concave arc axis are deviated, ensuring that the roller surface is higher than the inclined surface and the bottom surface, thereby ensuring that the roller can first contact the inner cover B1 that needs to be flipped, reducing friction, and reducing the friction damage of the inner cover chasing flip block head end 221 or the inner cover fixed flip block head end 261 to the inner cover B1.

[0061] When the packaging box B enters the outer cover guiding station 3, the front end of the outer cover guiding station 3 is horizontally provided with an inner cover fixed flip block tail plate 31 connected to the rear side wall of the inner cover fixed flip block 26; the upper part of the inner cover fixed flip block tail plate 31 has a first outer cover guide plate 32 and a second outer cover guide plate 33 which are positioned opposite to each other. Therefore, the present invention flips the outer cover B2 under the condition that the inner cover B1 is pressed, ensuring that the inner cover B1 will not affect the flipping of the outer cover B2.

[0062] In the embodiment of the present invention, the purpose of correcting the outer cover is to facilitate the insertion of the outer cover guide plate 21 into the inner surface of the outer cover B2. The front part of the outer cover guide plate 21 is the starting end of the guide plate. After being inserted into the inner surface of the outer cover B2, the outer cover B2 is gradually guided to the required outward inclination angle by the curved surface shape of the outer cover guide plate 21. Then the shape of the rear part of the outer cover guide plate 21 is to control the outer cover B2 to maintain the outward inclination angle, so as to allow the inner cover B1 to flip over, and then enter the outer cover B2 to guide the flipping. The front end of the guide plate is inserted into the outside of the outer cover B2, and the outer cover B2 is turned over through the curved transition and pressed under the outer cover guide plate. The rear end of the outer cover guide plate has a flat pressing section of a certain length.

[0063] The tape cutter mounting frame 4201 of the tape cutter 42 is provided with a tape cutter rotation drive assembly and a tape pasting assembly that can rotate under the drive of the tape cutter driving assembly. The tape pasting assembly includes a tape anti-slipping fixing frame 4204, a sticking and pressing roller 4209, a cutting tooth 4210 and a cutting limiting support foot 4211 that are connected to each other; the tape driving assembly includes a support shaft 4207 that passes through the tape anti-slipping fixing frame 4204, a brake rod 4206 connected to the support shaft 4207, a brake rod spring 4216 arranged at the end of the brake rod 4206 and a brake rod pushing wedge 4217, and a push spring 4202 fixed on the push spring support plate 4203 and capable of driving the adhesive cutter to rotate, a rear end of the cutting limit support foot 4211 is provided with a sticking push roller 4212, the sticking push roller 4212 can reciprocate under the action of the push roller pushing the driving telescopic rod 4213, the side wall of the push roller pushing the driving telescopic rod 4213 is connected with a push roller reset driving telescopic rod 4214, the push roller pushing the driving telescopic rod 4213 is suspended on the push roller slide 4215, the present invention uses the tape cutter 42 in the tape sticking and cutting station 4 of the above structure to stick tape to the packaging box B.

[0064] The specific working mode of the capping device of the present invention is as follows.

[0065] See attached Figure 6-7 , the packaging box B with products inside moves towards the capping device as it flows on the production line. First, the inner cover tracking block 22 is in a position slightly biased to the vertical direction under the action of its reset drive rod 23 in the initial state to ensure that the product is given way. When the detector detects that the product and the packaging box B have walked to the outer cover correcting assembly 11, the adjacent outer cover correcting assemblies 11 enter the gap between the two outer covers B2, and then the two outer cover correcting assemblies 11 move away from each other and open the two outer covers B2. The outer cover correcting assembly 11 has a shape similar to a hoe, which is a semi-elliptical or quasi-elliptical shape, with the center of rotation being the center of the ellipse. It basically remains vertical in a natural state. When an object passes through its lower end, it can swing slightly and reset after the object passes.

[0066] See attached Figure 8-13When the detector detects that the product and the packaging box B have moved to the specific position of the outer cover guiding and outer cover maintaining inner cover flipping station 2, the reset driving rod 23 on the reset driving rod bracket 24 drives the inner cover chasing flipping block 22 to flip and slide on the inner cover chasing flipping block slide rod 25, thereby flipping the inner cover B1 behind, and the inner cover B1 in front is blocked and flipped by the inner cover fixed flipping block head end 261 of the inner cover fixed flipping block 26. When the inner cover fixed flipping block head end 261 of the inner cover fixed flipping block 26 and the inner cover chasing flipping block head end 221 of the inner cover chasing flipping block 22 are connected, the product continues to move forward to the outer cover guiding flipping station 3, and then the inner cover chasing flipping block 22 is reset.

[0067] See attached Fig.14 At the outer cover guiding station 3, the inner cover B1 is pressed by the horizontal inner cover fixed flip block tail plate 31, and the first outer cover guiding plate 32 and the second outer cover guiding plate 33 above the inner cover fixed flip block tail plate 31 flip the outer cover B2, and the product continues to move to the tape cutting station 4.

[0068] See attached Figure 15-18 The working principle of the tape cutter 42 is as follows:

[0069] The adhesive tape is fed into and fixed in the adhesive tape anti-slipping fixing frame 4204, and a certain length of adhesive tape is torn out and extends out from the frame opening of the adhesive tape anti-slipping fixing frame 4204 and falls down. When the flat air outlet 4208 is working, the adhesive tape extending from the frame opening of the adhesive tape anti-slipping fixing frame 4204 can float flat over the cutting teeth 4210. The rear end of the adhesive tape anti-slipping fixing frame 4204 has a downwardly bent force-bearing tail wall 4205, and the adhesive tape anti-slipping fixing frame 4204 is penetrated by a support shaft 4207. The rear side of 4207 is connected to the brake rod 4206, and the rear side of the brake rod 4206 is provided with a brake rod spring 4216, which can drive the tape sticking and cutting device 4 to rotate, so that the sticking and pressing roller 4209 plays a pressing and sticking role. The inner cover fixed flip block tail plate 31 has a connecting plate inserted into the push spring 4202 support plate, and there is also a limit step on it, so that it drives the tape anti-slip fixed frame 4204, the sticking and pressing roller 4209, the cutting teeth 4210, and the cutting limit support foot 4211 to rotate or reset at the same time, through The rotation of the above components can compress and cut the tape floating on the upper part of the packaging box B. The entire tape cutter 42 rotates under the action of the push spring 4202. The brake lever push wedge 4217 is fixed to the main frame of the tape cutter 42. The brake lever 4206 is supported by the end and does not rotate with the tape cutter 42 as a whole. However, it can be rotated horizontally under the push of the brake lever push wedge 4217 to play the role of braking the tape, that is, to rotate to squeeze the tape to ensure that both ends of the packaging box B are The tape is left with a certain length, and the function of the extruded brake tape is to straighten the tape when it is cut to ensure reliable cutting (that is, the tape is not straightened and the cutting teeth 4210 cannot cut continuously). The wrapping and gluing roller 4212 can move forward and backward along the pushing roller slide 4215 under the action of the pushing roller resetting driving telescopic rod 4214 while moving up and down. In the present invention, the wrapping and gluing roller 4212 wraps and glues the joint seam of the outer cover of the packaging box B under the action of the pushing roller pushing driving telescopic rod 4213.

[0070] The exemplary embodiments of the present invention are described in detail above with reference to preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and the various technical features, structures and embodiments proposed in the present invention can be combined with each other.

Claims

1. A sealing device for a packaging box, characterized in that: For large household appliances, the station bracket of the capping device is sequentially provided with an outer cover deviation correction station, an outer cover deviation guiding and outer cover deviation maintaining inner cover flipping station, an outer cover flipping guiding station and an adhesive tape sticking and cutting station; the outer cover deviation guiding and outer cover deviation maintaining inner cover flipping station props up the outer cover and flips the inner cover; the outer cover flipping guiding station flips the outer cover; the adhesive tape sticks adhesive tape on the flipped inner cover and the outer cover; the front end of the outer cover deviation correction station is provided with an outer cover deviation correction component, The outer cover deviation correction component includes two elliptical structures, which can synchronously and symmetrically reciprocate and swing around the axis to achieve mutual approach or distance, so as to correct the deflection position of the outer cover; the front end of the outer cover guide and outer cover bias-maintaining inner cover flipping station is provided with an inner cover chasing flip block, and the rear end is provided with an inner cover fixed flip block, and the inner cover chasing flip block can rotate and approach or move away from the direction of the inner cover fixed flip block; the outer cover guide flip station is provided with an outer cover guide flap, and the outer cover guide flap includes a first outer cover guide flap plate and a second outer cover guide flap plate that cooperate with each other; the front end of the outer cover guide flip station is horizontally provided with an inner cover fixed flip block tail plate connected to the rear side wall of the inner cover fixed flip block; the first outer cover guide flap plate and the second outer cover guide flap plate are arranged above the inner cover fixed flip block tail plate, and the outer cover guide and outer cover bias-maintaining inner cover flipping stations are provided with a reset drive rod bracket and an inner cover chasing flip block slide rod, and the reset drive rod is provided on the reset drive rod bracket; the inner cover chasing flip block can be in the reversing The outer cover guide plate is provided on the outer cover guide and the outer cover bias-maintaining inner cover flipping station; the outer cover guide plate comprises a left outer cover guide plate and a right outer cover guide plate respectively provided at both ends of the station bracket; the upper end surface distance between the left outer cover guide plate and the right outer cover guide plate gradually increases from the end close to the outer cover deviation-correcting station to the end close to the outer cover guide flipping station, and then maintains a constant distance; The tape sticking and cutting station is equipped with a tape driving assembly and a tape pasting assembly that can rotate under the drive of the tape driving assembly; the tape pasting assembly includes an adhesive tape anti-slipping fixing frame, an adhesive pressure roller, cutting teeth and a cutting limiting support foot that are connected to each other; the tape driving assembly includes a support shaft that passes through the tape anti-slipping fixing frame, a brake rod connected to the support shaft, a brake rod reset spring and a brake rod pushing wedge block arranged at the end of the brake rod, and a push spring fixed to the push spring support plate and capable of driving the tape pasting assembly to rotate; the tape is fed into and fixed in the tape anti-slipping fixing frame, and a certain length of tape is torn off and extends out of the frame opening of the tape anti-slipping fixing frame and falls down. During operation, the tape extending from the frame opening of the tape anti-slipping fixing frame can float flat The rear end of the tape anti-slipping fixing frame is provided with a force-bearing tail wall bent downward, and a support shaft passes through the tape anti-slipping fixing frame, and the rear side of the support shaft is connected to the brake rod, and a brake rod spring is arranged on the rear side of the brake rod. There is a connecting plate inserted into the push spring support plate on the tail plate of the inner cover fixed flip block, and there is also a limiting step on it, so that it drives the tape anti-slipping fixing frame, the sticking and pressing roller, the cutting teeth, and the limiting cutting support feet to rotate or reset at the same time, and the sticking and pressing roller and the cutting teeth are used to press and cut the tape floating on the upper part of the packaging box. The tape pasting assembly rotates under the action of the push spring, and the brake rod pushing wedge block is fixedly connected to the main bone of the tape pasting assembly. The brake rod is supported by the end and does not rotate with the tape pasting assembly as a whole, but can rotate laterally under the push of the brake rod pushing wedge block.

2. The capping device according to claim 1, characterized in that: The station bracket is provided with a number of spacing adjustment slide bars, and a group of outer cover guide deflection plates and outer cover guide flaps slide back and forth along the spacing adjustment slide bars; the spacing adjustment slide bars are connected to the corresponding station brackets in the corresponding stations.

3. The capping device according to claim 1, characterized in that: The inner cover chasing and turning block head end of the inner cover chasing and turning block and the inner cover fixed turning block head end of the inner cover fixed turning block are provided with rollers.

4. The capping device according to claim 1, characterized in that: The distance between the upper end surfaces of the outer cover guide flaps at the beginning is 15 mm greater than the distance between the upper end surfaces of the outer cover guide deflector at the end, and then the distance between the upper end surfaces of the two groups of outer cover guide flaps gradually decreases until the width of the outer cover guide flaps is completely horizontal.

5. The capping device according to claim 1, characterized in that: The rear end of the cutting limit support leg is provided with a sticky push roller, and the sticky push roller can reciprocate up and down under the action of the push roller pushing the telescopic rod. The side wall of the push roller pushing the telescopic rod is connected to a push roller horizontally reciprocating driving telescopic rod, and the push roller pushing the telescopic rod is suspended on the push roller slideway.

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