Bag opening and sealing device for outer packaging bag of paper extraction bag

Abstract

The bag opening and sealing device comprises a bottom frame, a bag opening device body and a sealing device body, the bag opening device body is provided with a bag opening claw, the bag opening claw faces the sealing device body, bag folding air pipes are arranged on the two sides of the sealing device body, an upper bag sealing mechanism is arranged above the bag folding air pipes, and a lower bag sealing mechanism is arranged above the bag folding air pipes. After the packaging outer bag is loaded, a bag opening claw on the bag opening device enables a bag opening of the packaging outer bag to be kept in an open and tensioned state, the sealing device keeps an adsorption state on the upper face and the lower face of the bag opening at the same time, at the moment, the bag folding air pipe blows air towards the two sides of the bag opening, the bag opening in the tensioned state on the two sides is stressed inwards, and the bag opening is sealed. And when the bag opening claw retreats from the bag opening, the two sides of the bag opening can be folded inwards, the sealing device continues to extrude the folded bag opening, then the bag opening is sealed in a hot melting mode and cut off, air is blown towards the two sides of the bag opening through the bag air pipe, and the two sides of the bag opening are folded inwards, so that the packaging outer bag is firmer and tidier during sealing.

Description

Technical Field

[0001] The embodiments of the utility model relate to, but are not limited to, the field of packaging equipment, and in particular to a bag-supporting and sealing device for an outer bag of a tissue paper bag. Background Art

[0002] As we all know, tissue paper is packaged in independent small packages and then taken out for use by extraction. During the production process, multiple independent small packages need to be packaged together into a relatively large packaging bag before being sold. The large packaging bag loaded with multiple independent small packages of tissue paper also needs to be centrally packaged when leaving the factory so that it can be delivered to the destination intact.

[0003] At present, in addition to using cardboard boxes to store combination packaging bags of multiple independent tissue paper bags, there is also a method of using large plastic packaging bags to store and package the combination packaging bags. After packaging, they can be directly shipped out of the factory for sale. However, when sealing this type of packaging bag, the bag film on both sides will not fold towards the inside of the bag body after the bag is inflated, resulting in poor sealing effect of the bag mouth when the bag is inflated and then sealed. Utility Model Content

[0004] (1) Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a bag-stretching and sealing device for a tissue paper bag outer bag, which solves the technical problem that when a large plastic outer bag is used to store and package a combination packaging bag, the bag films on both sides will not fold toward the inside of the bag body after the bag is stretched, resulting in poor sealing effect of the bag opening when the bag is stretched and then sealed.

[0006] (2) Technical solution

[0007] The purpose of the present utility model is to provide a bag-holding and sealing device for the outer bag of a tissue paper bag, which comprises a base frame, a bag-holding device and a sealing device, wherein the sealing device is arranged at the side end of the base frame, the bag-holding device is arranged at the upper end of the base frame, the sealing device comprises a supporting guide rod, an upper bag-sealing mechanism and a lower bag-sealing mechanism, the upper bag-sealing mechanism and the lower bag-sealing mechanism are respectively arranged at the upper and lower ends of the supporting guide rod, the bag-holding device is provided with a bag-holding claw, the bag-holding claw faces the sealing device, folding air tubes are arranged on both sides of the sealing device, an upper bag-sealing mechanism is arranged above the folding air tube, a lower bag-sealing mechanism is arranged below the folding air tube, and an air tube support plate is arranged between the folding air tube and the base frame.

[0008] Preferably, the bag holding device includes a bag holding mechanism, a movable support plate and an advance and retreat mechanism, the bag holding mechanism is arranged at the upper end of the advance and retreat mechanism, and the movable support plate is arranged between the bag holding mechanism and the advance and retreat mechanism.

[0009] Preferably, the upper end of the movable support plate is provided with an opening and closing slide rail and two opening and closing sliders that cooperate with the opening and closing slide rail, an opening and closing support block fixed on the movable support plate is provided between the two opening and closing sliders, the opening and closing support block is provided with an opening and closing cylinder, the output end of the opening and closing cylinder is connected to the opening and closing slider, and the upper end of the opening and closing slider is provided with a bag claw support plate for installing the bag holding mechanism.

[0010] Preferably, the bag-holding mechanism is a symmetrical structure, with lifting support frames provided on both sides. The lifting support frames are provided with two guide rail assemblies, and the two guide rail assemblies are respectively connected to an upper bag-holding claw and a lower bag-holding claw. An upper bag-holding cylinder and a lower bag-holding cylinder are also respectively provided between the upper bag-holding claw, the lower bag-holding claw and the lifting support frame.

[0011] Preferably, the advance and retreat mechanism includes an advance and retreat motor, a transmission belt, a transmission pulley, an advance and retreat base plate, and a belt clamp installed on the movable support plate. The output end of the advance and retreat motor and the transmission pulley are connected through a transmission belt, and the transmission belt is inserted into and passes through the belt clamp to be connected to the movable support plate.

[0012] Preferably, the lower bag sealing mechanism is provided with an adjusting transverse plate and a lower mounting plate, a supporting cylinder is provided between the adjusting transverse plate and the lower mounting plate, a lower insert plate and a lower suction pipe are also provided on the lower mounting plate, a rubber strip seat is also provided between the lower insert plate and the lower suction pipe, a cutting seam is provided at the upper end of the rubber strip seat, and a silicone strip is provided between the cutting seams.

[0013] Preferably, the upper bag sealing mechanism is provided with an adjusting support plate and an upper mounting plate, and a lifting cylinder is provided between the adjusting support plate and the upper mounting plate.

[0014] Preferably, an upper plug-in plate and a plug-in plate cylinder fixed on the upper plug-in plate are provided at one end of the upper mounting plate, the output end of the plug-in plate cylinder is connected to a bakelite plywood, the lower end of the bakelite plywood is connected to a sealing copper strip, and an upper suction pipe is provided at the other end of the upper mounting plate.

[0015] Preferably, the upper mounting plate is also provided with a cutting guide rod and a toothed knife seat, the upper end of the cutting guide rod is arranged opposite to the insert plate cylinder, the lower end of the cutting guide rod is connected to the cutting toothed knife, and the cutting toothed knife is arranged in the toothed knife seat installed at the lower end of the upper mounting plate.

[0016] Preferably, auxiliary cylinders are provided on both sides of the cutting tooth cutter, and a spring return member with its lower end mounted on the tooth cutter seat is further provided between the cutting guide rod and the auxiliary cylinder.

[0017] (3) Beneficial effects

[0018] After the outer bag of the packaging is loaded, the bag-holding claws on the bag-holding device keep the bag opening of the outer bag in an open and tensioned state, and the sealing device simultaneously maintains an adsorption state on the upper and lower surfaces of the bag opening. At this time, the bag folding air pipe blows air toward both sides of the bag opening, so that the bag opening in the tensioned state on both sides is subjected to force inward, and when the bag-holding claws withdraw from the bag opening, the two sides of the bag opening will fold inward, and the sealing device continues to squeeze toward the folded bag opening and then hot-melt seals and cuts the bag opening. Compared with the existing technology, the method of blowing air toward both sides of the bag opening through the bag air pipe to fold the two sides of the bag opening inward further improves the firmness and neatness of the outer bag when sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0020] Figure 1 This is a three-dimensional diagram of the overall structure of the bag-supporting and sealing device used for the outer bag of a tissue paper bag;

[0021] Figure 2 This is a three-dimensional diagram of a bag-supporting device of a bag-supporting and sealing device for an outer bag of a tissue paper bag;

[0022] Figure 3 This is a three-dimensional diagram of the sealing device of the bag-supporting and sealing device used for the outer bag of a tissue paper bag;

[0023] Figure 4 It is a bag-supporting and sealing device for the outer bag of tissue paper packaging. Figure 3 A magnified view of point A in the figure;

[0024] Figure 5 This is a three-dimensional diagram of the upper bag sealing mechanism of the bag support and sealing device used for the outer bag of a tissue paper bag;

[0025] Figure 6 It is a bag-supporting and sealing device for the outer bag of tissue paper packaging. Figure 5 Enlarged view of point B in .

[0026] Description of reference numerals:

[0027] 1. Base frame; 10. Folding bag air tube; 11. Air tube support plate; 12. Upper fixing plate; 13. Lower fixing plate; 14. Support guide rod; 15. Adjusting bearing; 16. Blowing connecting plate;

[0028] 2. Bag-supporting device; 20. Bag-supporting mechanism; 201. Lifting support frame; 202. Lifting slide rail; 203. Lifting slider; 204. Upper bag-supporting claw; 205. Lower bag-supporting claw; 206. Upper bag-supporting cylinder; 207. Lower bag-supporting cylinder; 21. Movable support plate; 22. Advance and retreat mechanism; 220. Advance and retreat motor; 221. Drive belt; 222. Drive pulley; 223. Advance and retreat base plate; 224. Belt clamp; 23. Opening and closing slide rail; 24. Opening and closing slider; 25. Opening and closing support block; 26. Opening and closing cylinder; 27. Bag-supporting claw support plate; 28. Advance and retreat slider; 29. ​​Advance and retreat slide rail;

[0029] 3. Sealing cover device; 30. Lower bag sealing mechanism; 301. Adjusting horizontal plate; 302. Lower mounting plate; 303. Supporting cylinder; 304. Lower insert plate; 305. Lower suction pipe; 306. Rubber strip holder; 307. Silicone strip; 31. Upper bag sealing mechanism; 310. Adjusting supporting plate; 311. Upper mounting plate; 312. Lifting cylinder; 313. Upper insert plate; 314. Insert plate cylinder; 315. Bakelite plywood; 316. Sealing copper strip; 317. Upper suction pipe; 318. Cutting guide rod; 319. Tooth knife holder; 320. Cutting tooth knife; 321. Auxiliary cylinder; 322. Spring return member; 323. Waste suction port; 324. Lower suction hole; 325. Upper suction hole; 326. Cutting seam. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] The following is combined with Figures 1 to 6, for further description, the utility model discloses a bag-supporting and sealing device 3 for outer bags of tissue paper packaging, comprising a base frame 1, a bag-supporting device 2 and a sealing device 3, the sealing device 3 being arranged at the side end of the base frame 1, the bag-supporting device 2 being arranged at the upper end of the base frame 1, the sealing device 3 comprising a supporting guide rod 14, an upper bag-sealing mechanism 31 and a lower bag-sealing mechanism 30, the upper bag-sealing mechanism 31 and the lower bag-sealing mechanism 30 being respectively arranged at the upper and lower ends of the supporting guide rod 14 through adjusting bearings 15, and the upper and lower ends of the supporting guide rod 14 are further provided with an upper fixing plate 12 and a lower fixing plate 13 for connecting to a frame (not shown in the figure), The bag device 2 is provided with bag-supporting claws, wherein the bag-supporting claws include two upper bag-supporting claws 204 and a lower bag-supporting claw 205, and the bag-supporting claws face the sealing device 3. The two sides of the sealing device 3 are provided with bag-folding air tubes 10 arranged opposite to each other, wherein the blowing ports of the bag-folding air tubes 10 are also arranged opposite to each other. In addition, the other end of the bag-folding air tube 10 is connected to an air pump, and an upper bag-sealing mechanism 31 is provided above the bag-folding air tube 10, and a lower bag-sealing mechanism 30 is provided below the bag-folding air tube 10. A trachea support plate 11 is provided between the bag-folding air tube 10 and the base frame 1, and a blowing connecting plate 16 is provided between the trachea support plate 11 and the base frame 1.

[0032] In a preferred embodiment, the bag-holding device 2 includes a bag-holding mechanism 20, a movable support plate 21, and an advance-retract mechanism 22. The bag-holding mechanism 20 is arranged at the upper end of the advance-retract mechanism 22, and the movable support plate 21 is arranged between the bag-holding mechanism 20 and the advance-retract mechanism 22. Driven by the advance-retract mechanism 22, the bag-holding mechanism 20 arranged on the movable support plate 21 also performs forward and backward movements.

[0033] In a preferred embodiment, an opening and closing slide rail 23 and two opening and closing sliders 24 cooperating with the opening and closing slide rail 23 are provided at the upper end of the movable support plate 21. An opening and closing support block 25 fixed to the movable support plate 21 is provided between the two opening and closing sliders 24. The opening and closing support block 25 is provided with two opening and closing cylinders 26 arranged opposite to each other. The output ends of the two opening and closing cylinders 26 are respectively connected to the opening and closing sliders 24. Under the drive of the opening and closing cylinders 26, the bag claw support plate 27 for installing the bag holding mechanism 20 provided at the upper end of the opening and closing slider 24 will drive the bag holding claw to open and close left and right.

[0034] In a preferred embodiment, the bag-holding mechanism 20 is a symmetrical structure, with a lifting support frame 201 on both sides. The lifting support frame 201 is provided with two guide rail assemblies, which include a lifting slide rail 202 and a lifting slider 203 adapted to the lifting slide rail 202. The two guide rail assemblies are respectively connected to an upper bag-holding claw 204 and a lower bag-holding claw 205. An upper bag-holding cylinder 206 and a lower bag-holding cylinder 207 are respectively provided between the upper bag-holding claw 204, the lower bag-holding claw 205 and the lifting support frame 201, wherein the output end of the upper bag-holding cylinder 206 is connected to the upper bag-holding claw 204, and the output end of the lower bag-holding cylinder 207 is connected to the lower bag-holding claw 205.

[0035] In a preferred embodiment, the lower end of the bag-holding mechanism 20 is provided with an advance and retreat slide rail 29 connected to the base frame 1. The advance and retreat slide rail 29 is adapted to be equipped with an advance and retreat slider 28 connected to the movable support plate 21. Driven by the advance and retreat motor 220, the bag-holding mechanism 20 performs a reciprocating forward and backward motion along the advance and retreat slide rail 29.

[0036] In a preferred embodiment, the advance and retreat mechanism 22 includes an advance and retreat motor 220, a transmission belt 221, a transmission pulley 222, an advance and retreat base plate 223 and a belt clamp 224 installed on the movable support plate 21. The output end of the advance and retreat motor 220 is connected to the transmission pulley 222 through the transmission belt 221. The transmission belt 221 is inserted into and passes through the belt clamp 224 to be connected to the movable support plate 21. Under the drive of the advance and retreat motor 220, the transmission belt 221 will drive the movable support plate 21 to perform reciprocating forward and backward motion.

[0037] In a preferred embodiment, the lower bag sealing mechanism 30 is provided with an adjusting cross plate 301 and a lower mounting plate 302, a supporting cylinder 303 is provided between the adjusting cross plate 301 and the lower mounting plate 302, a lower insert plate 304 and a lower suction pipe 305 are also provided on the lower mounting plate 302, wherein the upper end face of the lower suction pipe 305 is provided with a waste suction port 323, which is connected to an air suction pump, and lower suction holes 324 are provided on both sides of the waste suction port 323, which are connected to an air pump, and a rubber strip seat 306 is also provided between the lower insert plate 304 and the lower suction pipe 305, and a cutting seam 326 is provided on the upper end of the rubber strip seat 306, which provides an avoidance position for the cutting tooth knife 320 to cut off the waste after the bag opening is hot-melt sealed, and a silicone strip 307 is provided between the cutting seams 326, which provides support during cutting and hot-melting.

[0038] In a preferred embodiment, the upper bag sealing mechanism 31 is provided with an adjustment support plate 310 and an upper mounting plate 311 , and a lifting cylinder 312 is provided between the adjustment support plate 310 and the upper mounting plate 311 .

[0039] In a preferred embodiment, one end of the upper mounting plate 311 is provided with an upper plug-in plate 313 and a plug-in plate cylinder 314 fixed on the upper plug-in plate 313, the output end of the plug-in plate cylinder 314 is connected to a bakelite plywood 315, and the lower end of the bakelite plywood 315 is connected to a sealing copper strip 316. When working, the sealing copper strip 316 is in a heated state to facilitate hot-melt sealing of the outer packaging bag made of plastic material. The other end of the upper mounting plate 311 is provided with an upper suction pipe 317, and the lower end surface of the upper suction pipe 317 is provided with an upper suction hole 325 to facilitate the adsorption of the upper part of the bag opening by an air pump.

[0040] In a preferred embodiment, the upper mounting plate 311 is further provided with a cutting guide rod 318 and a toothed knife seat 319. The upper end of the cutting guide rod 318 is arranged opposite to the insert plate cylinder 314, and the lower end of the cutting guide rod 318 is connected to the cutting toothed knife 320. The sharp surface of the cutting toothed knife 320 is a wavy pointed tooth shape. The cutting toothed knife 320 is arranged in the toothed knife seat 319 installed at the lower end of the upper mounting plate 311. The output end of the insert plate cylinder 314 will abut against the upper end of the cutting guide rod 318 during operation to apply a downward force to the cutting toothed knife 320.

[0041] In a preferred embodiment, auxiliary cylinders 321 are provided on both sides of the cutting tooth knife 320. The auxiliary cylinders 321 cooperate with the insert plate cylinder 314 to apply a downward force to the cutting tooth knife 320. A spring return member 322 with its lower end mounted on the tooth knife seat 319 is also provided between the cutting guide rod 318 and the auxiliary cylinder 321, wherein the spring return member 322 is a conventional structure to keep the tooth knife seat 319 in a preset position.

[0042] After the outer bag of the packaging is loaded, the bag-holding claws on the bag-holding device keep the bag opening of the outer bag in an open and tensioned state, and the sealing device simultaneously maintains an adsorption state on the upper and lower surfaces of the bag opening. At this time, the bag folding air pipe blows air toward both sides of the bag opening, so that the bag opening in the tensioned state on both sides is subjected to force inward, and when the bag-holding claws withdraw from the bag opening, the two sides of the bag opening will fold inward, and the sealing device continues to squeeze toward the folded bag opening and then hot-melt seals and cuts the bag opening. Compared with the existing technology, the method of blowing air toward both sides of the bag opening through the bag air pipe to fold the two sides of the bag opening inward further improves the firmness and neatness of the outer bag when sealing.

[0043] Although the technical solution according to the present invention has been described with reference to a number of different embodiments, aspects and features, it is not intended to limit the scope of the present invention, but all modifications thereof are within the broad scope of the foregoing disclosure, drawings and claims.

Claims

1. A bag-supporting and sealing device for an outer bag of a tissue paper bag, comprising a base frame, a bag-supporting device, and a sealing device, wherein the sealing device is disposed at a side end of the base frame, the bag-supporting device is disposed at an upper end of the base frame, and the sealing device comprises a support guide rod, an upper bag-sealing mechanism, and a lower bag-sealing mechanism, wherein the upper bag-sealing mechanism and the lower bag-sealing mechanism are disposed at upper and lower ends of the support guide rod, respectively. The bag-holding device is provided with a bag-holding claw, and the bag-holding claw faces the sealing device. Bag-folding air tubes are provided on both sides of the sealing device. An upper bag-sealing mechanism is provided above the bag-folding air tube, and a lower bag-sealing mechanism is provided below the bag-folding air tube. An air tube support plate is provided between the bag-folding air tube and the base frame.

2. The bag-opening and sealing device for the outer bag of a tissue paper bag according to claim 1, characterized in that: The bag holding device includes a bag holding mechanism, a movable support plate and an advance and retreat mechanism. The bag holding mechanism is arranged at the upper end of the advance and retreat mechanism, and the movable support plate is arranged between the bag holding mechanism and the advance and retreat mechanism.

3. The bag-opening and sealing device for the outer bag of a tissue paper bag according to claim 2, characterized in that: The upper end of the movable support plate is provided with an opening and closing slide rail and two opening and closing sliders that cooperate with the opening and closing slide rails. An opening and closing support block fixed to the movable support plate is provided between the two opening and closing sliders. The opening and closing support block is provided with an opening and closing cylinder. The output end of the opening and closing cylinder is connected to the opening and closing slider. The upper end of the opening and closing slider is provided with a bag claw support plate for installing a bag holding mechanism.

4. The bag-opening and sealing device for the outer bag of a tissue paper bag according to claim 2, characterized in that: The bag-supporting mechanism has a symmetrical structure, with lifting support frames on both sides. The lifting support frames are provided with two guide rail assemblies, and the two guide rail assemblies are respectively connected to the upper bag-supporting claw and the lower bag-supporting claw. The upper bag-supporting cylinder and the lower bag-supporting cylinder are respectively provided between the upper bag-supporting claw, the lower bag-supporting claw and the lifting support frame.

5. The bag-supporting and sealing device for the outer bag of a tissue paper bag according to claim 2, characterized in that: The advance and retreat mechanism includes an advance and retreat motor, a transmission belt, a transmission pulley, an advance and retreat base plate, and a belt clamp installed on a movable support plate. The output end of the advance and retreat motor is connected to the transmission pulley through a transmission belt, and the transmission belt is inserted into and passes through the belt clamp to be connected to the movable support plate.

6. The bag-opening and sealing device for the outer bag of a tissue paper bag according to claim 1, characterized in that: The lower bag sealing mechanism is provided with an adjusting transverse plate and a lower mounting plate, a supporting cylinder is provided between the adjusting transverse plate and the lower mounting plate, a lower insert plate and a lower suction pipe are also provided on the lower mounting plate, a rubber strip seat is also provided between the lower insert plate and the lower suction pipe, a cutting seam is provided at the upper end of the rubber strip seat, and a silicone strip is provided between the cutting seams.

7. The bag-opening and sealing device for the outer bag of a tissue paper bag according to claim 1, characterized in that: The upper bag sealing mechanism is provided with an adjusting support plate and an upper mounting plate, and a lifting cylinder is provided between the adjusting support plate and the upper mounting plate.

8. The bag-supporting and sealing device for the outer bag of a tissue paper bag according to claim 7, characterized in that: One end of the upper mounting plate is provided with an upper plugboard and a plugboard cylinder fixed on the upper plugboard, the output end of the plugboard cylinder is connected to a bakelite plywood, the lower end of the bakelite plywood is connected to a sealing copper strip, and the other end of the upper mounting plate is provided with an upper suction pipe.

9. The bag-supporting and sealing device for the outer bag of a tissue paper bag according to claim 7, characterized in that: The upper mounting plate is also provided with a cutting guide rod and a toothed knife seat. The upper end of the cutting guide rod is arranged opposite to the insert plate cylinder. The lower end of the cutting guide rod is connected to the cutting toothed knife. The cutting toothed knife is arranged in the toothed knife seat installed at the lower end of the upper mounting plate.

10. The bag-opening and sealing device for the outer bag of a tissue paper bag according to claim 9, characterized in that: Auxiliary cylinders are provided on both sides of the cutting tooth knife, and a spring return piece with its lower end mounted on the tooth knife seat is further provided between the cutting guide rod and the auxiliary cylinder.

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