CN217295083U - Packaging device - Google Patents

Abstract

The utility model provides a packing plant, including main conveying component, the permutation part, the part of grouping, the transition conveying component, sheet supply part, sheet parcel part, the permutation part is equipped with two permutation rim plates, be equipped with two gyration subassemblies I on the part of grouping, be equipped with the splint of doing rotary motion with fixed gesture on the gyration subassembly I, be equipped with straight transport region II on the transition conveying component, it is connected with transport region II to carry regional I, sheet supply part is located carries regional II tops, sheet parcel part is including buckling the guide subassembly, draw the subassembly, spout the gluey valve, be equipped with straight transport region III on the guide subassembly of buckling, carry regional II and carry regional III to be connected, be equipped with two gyration subassemblies II on the traction subassembly, gyration subassembly II is equipped with the push pedal of doing rotary motion with fixed gesture, spouts gluey valve and is located and carries regional III belows. The utility model discloses can adapt to the product packaging of different array types, degree of automation is high, has improved packing efficiency and quality.

Description

Packaging device

Technical Field

The utility model relates to a packing plant based on sheet carries out packing tied in a bundle.

Background

Sheet-based array packaging, also known as bunch wrap, is a common product packaging technique, such as 2 x 3 arrays of can-like beverage products, and 2 x 3 arrays of bottled dairy products, as well as 1 x 3 array packaging that is more consistent with a single person or market promotion. The packaging technology of the product comprises a grouping operation, a sheet material adding operation and a sheet material bending and wrapping operation.

When packing tied in a bundle among the prior art, generally adopt the manual work to go on, adopt the manual work to pack, can realize the product packaging of different array types, extensive applicability, but degree of automation is lower, and efficiency is lower, and packing quality receives the human factor influence moreover great.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a packing plant can adapt to the product packaging of different array types, and degree of automation is high, has improved packing efficiency and quality.

The utility model provides a packaging device, which comprises a main conveying component, an alignment component, a grouping component, a transition conveying component, a sheet supplying component and a sheet wrapping component, wherein the main conveying component is provided with a straight conveying area I, the alignment component and the grouping component are sequentially arranged in the conveying direction of the main conveying component, the alignment component is provided with two alignment wheel discs which are symmetrically distributed at two sides of the conveying area I, the grouping component is provided with two rotary assemblies I, the rotary assemblies I are provided with clamping plates which do rotary motion in fixed postures and the clamping plates of the two rotary assemblies I are symmetrically distributed at two sides of the conveying area I, the transition conveying component is positioned at one end of the main conveying component, the transition conveying component is provided with a straight conveying area II, the conveying area I is connected with the conveying area II, the sheet supply part is located and carries II tops in the region, sheet parcel part is including buckling the guide subassembly, drawing the subassembly, spouting the gluey valve, it is equipped with straight transport region III on the guide subassembly to buckle, carry region II and carry regional III to be connected, be equipped with two gyration subassemblies II on the drawing subassembly, gyration subassembly II is equipped with the push pedal of doing rotary motion with fixed gesture and the push pedal symmetric distribution of two gyration subassemblies II is in the both sides of carrying region III, it is located and carries regional III below to spout gluey valve.

Preferably, the bending guide assembly comprises a first support plate, a first guide rod, a second support plate, a second guide rod and a third support plate, the first guide rod, the second support plate, the second guide rod and the third support plate are all located at the bottom of a conveying area III, the first support plate and the first guide rod are arranged side by side in the direction from the conveying area II to the conveying area III, one end of the first guide rod is bent in the direction away from the first support plate, one end of the first support plate and one end of the second support plate are arranged side by side in the direction from the conveying area II to the conveying area III, the first guide rod and the second support plate are both located at the same side of the first support plate, the second guide rod is located in the extending direction of one end of the first support plate, one end of the second guide rod and the other end of the second support plate are arranged side by side in the direction from the conveying area II to the conveying area III, and one end of the second guide rod is bent in the direction away from the second support plate And the other end of the second guide rod and one end of a third support plate are arranged side by side in the direction from the conveying area II to the conveying area III, and the third support plate is positioned in the extending direction of the other end of the second support plate.

Preferably, the permutation part includes first interval adjustment assembly, first interval adjustment assembly includes the base, carries thing board, lead screw cover, the quantity that carries the thing board is two and distributes in main conveyor components's both sides, and two permutation rim plates are installed respectively on the year thing board of both sides, and two year thing boards pass through guide rail, sliding sleeve movable mounting on the base, the lead screw sets up on the base, every carry and all be equipped with a lead screw cover on the thing board, be equipped with left-handed screw thread and right-handed screw thread on the lead screw, two lead screw covers that carry on the thing board are connected respectively on two screw threads of lead screw.

Preferably, the grouping part comprises a second spacing adjusting assembly, the second spacing adjusting assembly is provided with a base, a guide rail, a sliding block, a carrying plate, a screw rod sleeve and a handle, the guide rail and the screw rod are both mounted on the base, the screw rod is parallel to the guide rail, each of two ends of the rotary assembly I is provided with a carrying plate, the carrying plates are movably connected onto the guide rail through the sliding block, each carrying plate is fixedly provided with a screw rod sleeve in threaded connection with the screw rod corresponding to the side, the screw threads of the screw rod sleeves on the two carrying plates at the same end are opposite in rotating direction, one of the screw rods is connected with the handle, and the two screw rods are connected through a synchronous belt.

Preferably, sheet parcel part includes third interval adjusting part, third interval adjusting part includes base, guide rail, slider, carries thing board, lead screw cover, guide rail and lead screw are all installed on the base, the lead screw is on a parallel with the guide rail, every the both ends of pulling the subassembly respectively are equipped with one and carry the thing board, carry the thing board and pass through slider sliding connection on the guide rail, every carry and all be fixed with a lead screw cover with lead screw threaded connection on the thing board, the screw that is located two of same end and carries the screw cover on the thing board revolves to opposite.

Preferably, the transition conveying part includes base, transition conveyer belt, mounting panel, lead screw, integral key shaft, servo motor, handle, the quantity of mounting panel all installs a transition conveyer belt for two and on every mounting panel, all be equipped with on every mounting panel with the band pulley of transition conveyer belt meshing, two be parallel to each other between the mounting panel and slidable mounting on the base, be equipped with the lead screw of two mounting panels of cross-over connection on the base, the screw thread that is threaded connection and threaded connection position between lead screw and two mounting panels revolves to opposite, connect through the hold-in range between two lead screws, be equipped with the integral key shaft that runs through two mounting panel installations on the base, band pulley slidable mounting is on the integral key shaft, servo motor is connected with the one end of integral key shaft.

In conclusion, the application the technical scheme of the utility model, following beneficial effect has at least:

1. the grouping and wrapping processes of the product bundling package can be automatically realized, the amount of manual labor is reduced, and the packaging efficiency and the packaging quality are improved;

2. through the setting of interval adjustment assembly, can realize the demand to the product packaging of different column numbers.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is an overall structure of the present invention;

FIG. 2 is a block diagram of the present invention;

FIG. 3 is a structural view of a transition conveying part of the present invention;

fig. 4 is a top view of the transition conveying part of the present invention;

FIG. 5 is a sheet wrapping member structure of the present invention;

FIG. 6 is a structural view of the bending guide assembly of the present invention;

fig. 7 is a schematic drawing of a deformation of the web material as it is wrapped around the outside of the product by the bend guide assembly (dotted lines are schematic web material).

In the figure:

1. a main conveying member; 10. a conveying area I;

2. an array of components; 21. an entire row of wheel discs;

3. a grouping component; 30. a conveying area II; 31. a rotating component I; 311. a splint; 312. a synchronous belt; 313. a shaft sleeve; 314. a rotating shaft; 315. a connecting rod;

4. a transition conveying component; 41. a transition conveyor belt; 42. a handle; 43. a spline shaft; 44. a servo motor;

5. a sheet supply member;

6. a sheet wrapping member; 60. a conveying area III;

61. a rotating assembly II; 611. pushing a plate;

62. a first support plate; 63. a first guide bar; 64. a second support plate; 65. a second guide bar; 66. a third support plate;

7. and (4) a glue spraying valve.

8. A folding guide bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 7, in the present application, the wrapping apparatus includes a main conveying section 1, an aligning section 2, a grouping section 3, a transit conveying section 4, a sheet supply section 5, and a sheet wrapping section 6.

The main conveying part 1 is used for conveying products to be packaged, and the main conveying part 1 adopts a synchronous belt for conveying; in actual production, products are placed on the synchronous belt at one end of the main conveying component 1 in a dense arrangement mode and conveyed, the area through which the products move along with the synchronous belt is a conveying area I10, and the products conveyed on the main conveying component 1 sequentially pass through the arraying component 2 and the grouping component 3 to be subjected to pre-arraying and grouping processing.

Wherein the permutation part 2 includes two symmetric distributions in the permutation rim plate 21 of I10 both sides of conveying region, a distance for carrying the product on the main conveyor part 1 is arranged and is adjusted, make the product carry to the follow-up with the same interval, permutation rim plate 21 overall structure is similar to the gear, only set up the tooth flank position on the gear into the structure similar with product lateral wall shape, just so can realize the adjustment to the product interval through the rotation of permutation rim plate 21, in addition permutation rim plate 21 is through independent servo motor drive, can adjust its rotational speed according to the conveying speed of main conveyor part 1, adaptability is higher. When actual design, in order to realize that the operation width of permutation part 2 is adjustable, this application permutation part 2 still includes first interval adjustment assembly, and first interval adjustment assembly includes the base, carries thing board, lead screw cover, the quantity of carrying the thing board is two and distributes in the both sides of main conveyor components 1, and two permutation rim plates 21 are installed respectively on the year thing board of both sides, and two carry the thing board and pass through guide rail, sliding sleeve movable mounting on the base, the lead screw sets up on the base, every carry and all be equipped with a lead screw cover on the thing board, be equipped with left-handed screw thread and right-handed screw thread on the lead screw, two lead screw covers that carry on the thing board are connected respectively on two screw threads of lead screw. Through the design of the first spacing adjustment assembly, the spacing of the two rows of wheel discs 21 is adjustable (it should be noted that the spacing of the rows of wheel discs 21 is adjustable in the size of the effective conveying area above the main conveying part 1), so that the adjustment of the number of packaging rows during bundling packaging can be adapted, and if m × n packaging combinations are needed, the adjustment of the spacing of the rows of wheel discs 21 can be adapted to the requirements of different n rows.

Products sequenced by the arraying component 2 are continuously conveyed to the grouping component 3 on the main conveying component 1, the grouping component 3 is used for grouping the arrayed products, the grouping component 3 is provided with two rotary assemblies I31, the rotary assemblies I31 are provided with clamping plates 311 which do rotary motion in a fixed posture, the clamping plates 311 of the two rotary assemblies I31 are symmetrically distributed on two sides of the conveying area I10, and the specific structure of the rotary assemblies I31 can be seen in patent CN102201149607. X; the rotating assembly I31 comprises a clamping assembly and a conveying assembly (wherein the conveying assembly adopts a synchronous belt structure), each clamping assembly is provided with two chains/synchronous belts which are distributed in a staggered manner in the vertical direction, the synchronous belts are taken as an example for description, the two synchronous belts 312 form a parallelogram structure in space, one synchronous belt 312 is provided with a shaft sleeve 313, the other synchronous belt 312 is also provided with the shaft sleeve 313, a rotating shaft 314 is arranged in each shaft sleeve 313, the two rotating shafts 314 are connected through a connecting rod 315, the two shaft sleeves 313 are staggered in the vertical direction, the clamping plate 311 is arranged on the rotating shaft 314 located at a high position, and in the using process, the two synchronous belts 312 move synchronously, so that the space position of the clamping plate 311 is changed without changing the space posture. The clamping plate 311 is provided with a limiting opening structure corresponding to the outline of the article. The two clamping assemblies are distributed in a mirror image mode, the clamping plates 311 at the two positions are converged above the conveying area I10 to form a clamping state, so that products can be clamped at the position, and the products can be divided into different combinations of 2 x n, 3 x n or 4 x n according to different numbers of limiting openings in the clamping plates 311, namely the requirements on different arrangement numbers of m rows in the product bundling package are met.

Similarly, in order to adjust the operation width of the rotating assembly I31, the grouping component 3 in the application comprises a second distance adjusting assembly, the second distance adjusting assembly is provided with a base, a guide rail, a sliding block, a carrying plate, screw rods, screw rod sleeves and a handle, the guide rail and the screw rods are both arranged on the base, the screw rods are parallel to the guide rail, two ends of each rotating assembly I31 are respectively provided with a carrying plate, the carrying plates are movably connected on the guide rail through the sliding block, each carrying plate is fixedly provided with a screw rod sleeve in threaded connection with the screw rod corresponding to the side, the screw thread directions of the screw rod sleeves on the two carrying plates at the same end are opposite, one of the screw rods is connected with the handle, and the two screw rods are connected through a synchronous belt, so that the rotation of one screw rod can drive the rotation of the other screw rod through the synchronous belt, and further realize the synchronous rotation of the two screw rods, therefore, the rotation of each screw rod can drive the carrying plates on the two sides to synchronously and reversely move, and finally the synchronous adjustment of the four carrying plates at the two ends of the two rotary assemblies I31 is realized; therefore, the two ends of the two rotating assemblies I31 can be synchronously adjusted in the adjusting process, the adjusting motion process is more stable, and the distance is kept consistent everywhere after adjustment is facilitated.

In the application, the transition conveying component 4 is located at one end of the main conveying component 1, a straight conveying area II 30 (an area where products pass along with the transition conveying belt 41) is arranged on the transition conveying component 4, the conveying area II 30 is connected with a conveying area I10 on the main conveying component 1, wherein the transition conveying component 4 comprises a base, the transition conveying belt 41, mounting plates, a screw rod, a spline shaft 43, a servo motor 44 and a handle 42, the number of the mounting plates is two, one transition conveying belt 41 is arranged on each mounting plate, belt wheels meshed with the transition conveying belt 41 are arranged on each mounting plate, the two mounting plates are parallel to each other and are slidably mounted on the base, the base is provided with two screw rods bridging the two mounting plates, the screw rods are in threaded connection with the two mounting plates, the thread rotating directions of the threaded connection positions are opposite, and the two screw rods are connected through a synchronous belt, be equipped with the integral key shaft 43 that runs through two mounting panels installations on the base, band pulley slidable mounting is on integral key shaft 43, servo motor 44 is connected with the one end of integral key shaft 43. It can be seen that the spacing between the two transition belts 41 on the transition conveyor section 4 is adjustable (similar to the first and second spacing adjustment assemblies) so that the transition conveyor section 4 can accommodate adjustment of the width-wise spacing of the alignment section 2 and the turning assembly i 31.

The present application provides a sheet supply unit 5 above the conveying area ii 30 for providing sheets for packaging products, wherein the sheet supply unit 5 can provide sheets and packaging forms of the sheets, which can refer to the patent of hong kong in china having application number HK 92000650. The sheet supply unit 5 is used for outputting the transversely arranged sheets one by one and directly covering the products grouped by the grouping unit 3 in an array arrangement for use in a subsequent packaging operation. The sheet supply component 5 supplies sheets at the position of the conveying area II 30 of the transition conveying component 4, through holes for products to pass through are formed in the supplied sheets, the products are combined with the sheets after passing through the through holes in the sheets, the sheets are located at the tops of the products at the moment but do not form a wrapping effect, and the sheets are wrapped outside the products through the sheet wrapping component 6.

The sheet wrapping component 6 comprises a bending guide component, a traction component and a glue spraying valve 7, a straight conveying area III 60 (an area which is positioned between two rotary components II 61 and is used for passing through products) is arranged on the bending guide component, the conveying area III 60 is connected with a conveying area II 30 on the transition conveying component 4, the mentioned products with the sheets are conveyed to the conveying area III 60, and the bending wrapping of the sheets is carried out in the conveying area III 60; the traction assembly is provided with two rotary assemblies II 61, the rotary assemblies II 61 are provided with push plates 611, the push plates 611 of the two rotary assemblies II 61 are symmetrically distributed on two sides of the conveying area III 60, the rotary assemblies II 61 comprise synchronous belts, and the push plates 611 are uniformly distributed on the synchronous belts at intervals and do rotary motion with the synchronous belts; wherein the glue spraying valve 7 is positioned below the conveying area III 60, so that the push plate 611 can push the products to move in the conveying area III 60 along with the rotation of the rotary component II 61, the wrapping process is carried out in the product moving process, and the structure of the rotary component II 61 can be seen in patent 202110645447.4.

It should be noted that when a product enters the conveying area iii 60 from the conveying area ii 30 for sheet guiding bending, the sheet is firstly bent by a folding guide 8 (a specific structure is not shown, and a schematic line of the folding guide 8 is shown in the figure), and as shown in the figure, the folding guide 8 is located above the transition conveying component; the folding guide 8 can bend the flat sheet by pressing, so that the sheet enters the conveying area iii 60 after being attached to the side surface of the product.

The bending guide assembly is used for wrapping the shape of the sheet after folding and comprises a first supporting plate 62, a first guide rod 63, a second supporting plate 64, a second guide rod 65 and a third supporting plate 66, wherein the first supporting plate 62, the first guide rod 63, the second supporting plate 64, the second guide rod 65 and the third supporting plate 66 are all positioned at the bottom of the conveying area III 60, the first supporting plate 62 is used for supporting the bottom of a product during wrapping, the product is conveyed along the first supporting plate 62 under the pushing action of a rotary assembly II 61, the first supporting plate 62 and the first guide rod 63 are arranged side by side in the direction from the conveying area II 30 to the conveying area III 60, the first guide rod 63 and the second supporting plate 64 are both positioned on the first supporting plate 62, one end of the first guide rod 63 is bent in the direction far away from the first supporting plate 62, and is used for bending the short folding on one side of the sheet, the short hinges of the sheet are bent towards the bottom of the product by the guide of the bending structure of the first guide rod 63, and the short hinges of the sheet are bent and attached to the bottom of the product and then are kept in a bent state by the second support plate 64;

the second guide rod 65 is located in the extending direction of one end of the first support plate 62, one end of the second guide rod 65 and the other end of the second support plate 64 are arranged side by side in the direction from the conveying area II 30 to the conveying area III 60, one end of the second guide rod 65 is bent in the direction away from the second support plate 64, the second guide rod 65 is used for bending the long hinge on the other side of the sheet, the long hinge of the sheet is bent towards the bottom of the product and attached to the short hinge of the bent sheet guided by the first guide rod 63 through the guide of the bending structure of the second guide rod 65, the glue spraying valve 7 is arranged at the position of the second support plate 64, the combined part of the bent sheet at the bottom of the product is supported and shaped while the sheet is bent by the second guide rod 65, at this time, the wrapping operation is basically completed, the third support plate 66 is located in the extending direction of the other end of the second support plate 64, the product is finally conveyed further backward by the support of the third support plate 66, thereby completing the whole wrapping process, and the traction assembly provides the driving force for conveying the product through the push plate 611 in the whole wrapping process of the product.

In addition, in order to meet the aforementioned requirements for arranging and packaging products with different widths, the middle sheet wrapping part 6 of the present invention further comprises a third distance adjusting assembly, wherein the third distance adjusting assembly comprises a base, a guide rail, a slider, object carrying plates, a lead screw and a lead screw sleeve, the guide rail and the lead screw are both mounted on the base, the lead screw is parallel to the guide rail, two ends of each traction assembly are respectively provided with an object carrying plate, the object carrying plates are slidably connected to the guide rail through the slider, each object carrying plate is fixed with a lead screw sleeve in threaded connection with the lead screw, and the thread turning directions of the lead screw sleeves on the two object carrying plates at the same end are opposite; the working principle of the third spacing adjustment assembly is basically the same as that of the first spacing adjustment assembly and that of the second spacing adjustment assembly, and the third spacing adjustment assembly is not described in detail herein.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims (7)

1. A packaging device characterized by: the packaging device comprises a main conveying component, an alignment component, a grouping component, a transition conveying component, a sheet supplying component and a sheet wrapping component, wherein a straight conveying area I is arranged on the main conveying component, the alignment component and the grouping component are sequentially arranged in the conveying direction of the main conveying component, the alignment component is provided with two alignment wheel discs, the alignment wheel discs are symmetrically distributed on two sides of the conveying area I, two rotation assemblies I are arranged on the grouping component, clamping plates which do rotation movement with fixed postures are arranged on the rotation assemblies I, the clamping plates of the two rotation assemblies I are symmetrically distributed on two sides of the conveying area I, the transition conveying component is positioned at one end of the main conveying component, a straight conveying area II is arranged on the transition conveying component, the conveying area I is connected with the conveying area II, and the sheet supplying component is positioned above the conveying area II, sheet parcel part is including buckling the guide assembly, drawing the subassembly, spouting the gluey valve, buckle and be equipped with straight transport region III on the guide assembly, carry region II and carry region III to be connected, be equipped with two gyration subassemblies II on the drawing subassembly, gyration subassembly II is equipped with the push pedal of doing rotary motion with fixed gesture and the push pedal symmetric distribution of two gyration subassemblies II is in the both sides of carrying region III, it is located and carries region III below to spout gluey valve.

2. The packaging device according to claim 1, wherein the bending guide assembly comprises a first support plate, a first guide rod, a second support plate, a second guide rod, and a third support plate, the first guide rod, the second support plate, the second guide rod, and the third support plate are all located at the bottom of the conveying area iii, the first support plate and the first guide rod are arranged side by side in the direction from the conveying area ii to the conveying area iii, one end of the first guide rod is bent in a direction away from the first support plate, one end of the first support plate and one end of the second support plate are arranged side by side in the direction from the conveying area ii to the conveying area iii, the first guide rod and the second support plate are both located at the same side of the first support plate, the second guide rod is located in the extending direction of one end of the first support plate, one end of the second guide rod and the other end of the second support plate are arranged side by side in the direction from the conveying area ii to the conveying area iii, and are arranged side by side One end of the second guide rod is bent in the direction far away from the second support plate, the other end of the second guide rod and one end of the third support plate are arranged side by side in the direction from the conveying area II to the conveying area III, and the third support plate is located in the extending direction of the other end of the second support plate.

3. The packaging device according to claim 1, wherein the alignment member comprises a first distance adjusting assembly, the first distance adjusting assembly comprises a base, two carrying plates, a screw rod and a screw rod sleeve, the two carrying plates are distributed on two sides of the main conveying member, the two alignment wheel discs are respectively mounted on the carrying plates on the two sides, the two carrying plates are movably mounted on the base through a guide rail and a sliding sleeve, the screw rod is arranged on the base, each carrying plate is provided with a screw rod sleeve, the screw rod is provided with a left-handed thread and a right-handed thread, and the screw rod sleeves on the two carrying plates are respectively connected to two threads of the screw rod.

4. The packaging device according to claim 1, wherein the grouping component comprises a second distance adjusting assembly, the second distance adjusting assembly is provided with a base, a guide rail, a sliding block, a carrying plate, a screw rod sleeve and a handle, the guide rail and the screw rod are both mounted on the base, the screw rod is parallel to the guide rail, two ends of each rotary assembly I are respectively provided with a carrying plate, the carrying plates are movably connected onto the guide rail through the sliding block, each carrying plate is fixedly provided with a screw rod sleeve in threaded connection with the screw rod corresponding to the side, the screw thread directions of the screw rod sleeves on the two carrying plates at the same end are opposite, one of the screw rods is connected with the handle, and the two screw rods are connected through a synchronous belt.

5. The packaging device according to claim 1, wherein the sheet wrapping member comprises a third distance adjusting assembly, the third distance adjusting assembly comprises a base, a guide rail, a slider, a carrying plate, a screw rod and a screw rod sleeve, the guide rail and the screw rod are both mounted on the base, the screw rod is parallel to the guide rail, two ends of each traction assembly are respectively provided with a carrying plate, the carrying plates are slidably connected to the guide rail through the slider, each carrying plate is fixedly provided with a screw rod sleeve in threaded connection with the screw rod, and the screw thread directions of the screw rod sleeves on the two carrying plates at the same end are opposite.

6. The packaging device as claimed in claim 1, wherein the transition conveying member comprises a base, a transition conveying belt, a mounting plate, a screw rod, a spline shaft, a servo motor and a handle, the number of the mounting plates is two, each mounting plate is provided with a transition conveying belt, each mounting plate is provided with a belt wheel meshed with the transition conveying belt, the two mounting plates are parallel to each other and are arranged on the base in a sliding manner, the base is provided with two screw rods which are bridged over the two mounting plates, the screw rods are in threaded connection with the two mounting plates, the thread turning directions of the threaded connection parts are opposite, the two screw rods are connected through a synchronous belt, the base is provided with a spline shaft which penetrates through the two mounting plates to be mounted, the belt wheel is slidably mounted on the spline shaft, and the servo motor is connected with one end of the spline shaft.

7. The wrapping device according to claim 1, wherein the sheet wrapping member further comprises folding guides disposed right above the intermediate conveyance member and disposed on both sides of the conveyance area ii, the folding guides being installed at a position where the intermediate conveyance member abuts against the sheet wrapping member, the folding guides guiding the flat sheet to be folded and attached to the side of the product.

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