Automatic strapping machine for cigarette case production line

Abstract

The invention discloses an automatic strapping machine for a cigarette case production line. The automatic strapping machine comprises a rack, a paperboard outlet unit, a strapping unit and a finished product outlet unit. The rack comprises a lower bracket, a positioning backup plate, an upper bracket and a middle plate; the lower support comprises a working platform, two guide grooves transversely formed in the left middle portion of the working platform and a bundling opening formed in the right middle portion of the working platform. The positioning backup plate is fixed to the working platform and located on the front sides of the two guide grooves in parallel. The upper support comprises a top plate and a middle plate which is hung below the top plate and located over the bundling opening. The paperboard outlet unit comprises a paperboard pressing mechanism and a paperboard feeding mechanism; the bundling unit comprises a coated paper placing mechanism, a coated paper feeding mechanism, a coated paper pulling mechanism, a coated paper pressing mechanism, a coated paper cutting mechanism, a paperboard lifting mechanism, a coated paper bending mechanism and a coated paper hot-bonding mechanism; the finished product output unit comprises a finished product output table, a finished product receiving table and a finished product pushing mechanism. The strapping device is good in strapping quality and high in automation degree.

Description

Technical Field

[0001] The present invention relates to an automatic bundling machine for a cigarette box production line. Background Art

[0002] Before the outer packaging cartons of cigarettes are made into boxes, they are small printed and cut cardboard sheets processed by a printing factory. Such small cardboard sheets are semi-finished products. A certain number of small cardboard sheets are stacked into a stack and bundled with wrapping paper for easy turnover and transportation. After these stacks of cigarette box cardboard are transported to a cigarette production factory, the cigarette production equipment automatically makes them into cigarette boxes and packages the cigarettes.

[0003] Currently, the stacks of cigarette box cardboard used on cigarette production equipment are bundled manually by workers in the printing factory with kraft paper whose width is less than the length of the cigarette box cardboard. First, double-sided tape is pasted on one end of the outer surface of the kraft paper, and then the kraft paper is wound around the stack of cigarette box cardboard and the other end of the kraft paper is adhered to the double-sided tape. Due to manual bundling, the tightness degree of bundling by each person is different, and the position of the kraft paper after bundling is also inconsistent (it should be located in the middle of the length of the stack of cigarette box cardboard), and the bundling efficiency is low. Although it can basically meet the production requirements of existing cigarette production equipment, with the upgrading, renewal, and replacement of cigarette production equipment, the production efficiency and automation degree of cigarette production equipment are continuously improving, and manual bundling with kraft paper can no longer meet the requirements of automated and high-efficiency production. There are relatively few such devices in the prior art. Even if there are some imported devices available, these devices have complex structures, high costs, and are difficult to maintain. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide an automatic bundling machine for a cigarette box production line, which has the characteristics of compact structure, good safety performance, good bundling quality, and high automation degree.

[0005] The purpose of the present invention is achieved as follows: An automatic bundling machine for a cigarette box production line includes a frame, a cardboard output unit, a bundling unit, and a finished product output unit;

[0006] The rack includes a lower bracket, a positioning backing plate, and an upper bracket; the lower bracket includes four support columns, a horizontal support frame fixed between the lower parts of the four support columns, a working platform fixed on the top surfaces of the four support columns with a notch opened in the middle of the rear end, and a middle support column fixed between the middle of the front side of the horizontal support frame and the middle of the front bottom surface of the working platform; two guiding grooves are transversely opened in the middle of the left side of the working table, and a bundling opening is opened in the middle of the right side of the working table; the positioning backing plate is fixed on the working platform and is parallelly located on the front side of the two guiding grooves; the upper bracket includes six long columns fixed on the working platform, a top plate fixed on the top surfaces of the six long columns, and an intermediate plate suspended below the top plate through four short columns and located directly above the bundling opening, and the width of the intermediate plate is adapted to the width of a stack of cigarette box cardboard stacks;

[0007] The cardboard feeding unit includes a cardboard pressing mechanism and a cardboard feeding mechanism; among them,

[0008] The cardboard pressing mechanism is installed on the bottom surface of the top plate and is located directly above the two guiding grooves to flatten a stack of cigarette box cardboard stacks;

[0009] The cardboard feeding mechanism is installed on the working platform and is located on the lower left side of the cardboard pressing mechanism to push the flattened stack of cigarette box cardboard stacks to the position of the bundling opening to the right;

[0010] The bundling unit includes a plastic film paper placing mechanism, a plastic film paper feeding mechanism, a plastic film paper pulling mechanism, a plastic film paper pressing-down mechanism, a plastic film paper cutting mechanism, a cardboard lifting mechanism, a plastic film paper bending mechanism, and a plastic film paper hot bonding mechanism; among them,

[0011] The plastic film paper placing mechanism is installed on the right front side of the lower bracket;

[0012] The plastic film paper feeding mechanism is installed on the upper right front part of the working platform to send the plastic film paper released by the plastic film paper placing mechanism backward for a certain distance;

[0013] The plastic film paper pulling mechanism is installed on the bottom surface of the intermediate plate corresponding to the plastic film paper feeding mechanism. First, it bites the end of the plastic film paper sent by the plastic film paper feeding mechanism forward, and then pulls the plastic film paper backward so that a section of the plastic film paper is located above the stack of cigarette box cardboard stacks;

[0014] The plastic film paper pressing-down mechanism is installed on the bottom surface of the top plate and is located directly above the bundling opening to press the middle part of a section of the plastic film paper located above the stack of cigarette box cardboard stacks onto the top surface of the stack of cigarette box cardboard stacks;

[0015] The plastic film paper cutting mechanism is installed at the front end of the plastic film paper feeding mechanism to cut the tail end of a section of the plastic film paper sent by the plastic film paper feeding mechanism;

[0016] The cardboard lifting mechanism is installed below the working platform corresponding to the strapping opening, and lifts the stack of cigarette box cardboard to make the top surface of the stack of cigarette box cardboard contact with the bottom surface of the intermediate plate;

[0017] The plastic film folding mechanism is installed on the bottom surface of the top plate and on both sides of the plastic film pressing mechanism. First, the plastic film on both sides of the top surface of the stack of cigarette box cardboard is vertically folded downward, and then the plastic film on both sides of the bottom of the stack of cigarette box cardboard is horizontally folded relatively and closely attached to the bottom surface of the stack of cigarette box cardboard;

[0018] The plastic film hot bonding mechanism is installed inside the cardboard lifting mechanism, and firmly hot bonds the overlapping part in the middle of the plastic film on the bottom surface of the stack of cigarette box cardboard to form a stack of finished cigarette box cardboard;

[0019] The finished product output unit includes a finished product output table, a finished product receiving table and a finished product pushing mechanism. Among them,

[0020] The finished product output table is connected to the gap in the working platform, and receives the stack of finished cigarette box cardboard pushed out of the strapping opening to the right by the latter stack of cigarette box cardboard;

[0021] The finished product receiving table is connected to the front end of the finished product output table;

[0022] The finished product pushing mechanism is installed at the rear part of the right end of the working platform, and pushes the stack of finished cigarette box cardboard on the finished product output table forward to the finished product receiving table.

[0023] The above-mentioned automatic strapping machine for the cigarette box production line, wherein, the cardboard pressing mechanism includes a cardboard pressing cylinder vertically installed on the bottom surface of the top plate and a cardboard pressing plate installed at the lower end of the piston rod of the cardboard pressing cylinder.

[0024] The above-mentioned automatic strapping machine for the cigarette box production line, wherein, the cardboard feeding mechanism includes a left-right rodless cylinder horizontally installed on the bottom surface of the working platform, a U-shaped connecting piece installed on the top surface of the slider of the left-right rodless cylinder and passing upward through two guide grooves on the working platform, and a cardboard feeding plate installed on the upper right end surface of the connecting piece.

[0025] The above-mentioned automatic strapping machine for the cigarette box production line, wherein,

[0026] The plastic film releasing mechanism includes two bearing seats respectively installed in the middle of the middle support column and the middle of a support column supporting the right front end of the working platform, a film releasing reel straddling between the two bearing seats, a positioning ring fixed on the film releasing reel, a tensioning cone head fixed on the film releasing reel, and a plastic film roll sleeved between the positioning ring and the tensioning cone head through a core tube;

[0027] The film feeding mechanism for the release film paper includes two upper small wallboards, a film feeding cylinder, a swing arm, a film feeding driving roller, a film feeding driven roller, and a film feeding roller pressure adjusting mechanism; the two upper small wallboards are fixed on the working platform, one on the left and the other on the right. In the middle of the top surface of each of the two upper small wallboards, a blind hole is vertically opened. On the upper surface of each of the two upper small wallboards, a perforation is opened that is vertically communicated with the bottom of the blind hole; the film feeding cylinder is hinged on the working platform and is located on the left side of the left upper small wallboard; one end of the swing arm is fixedly connected to the end of the piston rod of the film feeding cylinder for the release film paper; the left and right ends of the film feeding driving roller are respectively installed on the upper parts of the two upper small wallboards through one-way bearings. The end of the film feeding driving roller extending out of the left end of the left upper small wallboard is also hinged to the other end of the swing arm through a one-way bearing; the left and right ends of the film feeding driven roller are correspondingly inserted into the perforations on the two upper small wallboards and are tangent to the upper part of the driving roller; the film feeding roller pressure adjusting mechanism includes two pressing plates correspondingly arranged on the top surfaces of the two upper small wallboards, two vertical springs correspondingly installed in the blind holes of the two upper small wallboards, and two vertical shouldered screws installed in the threaded jacks on the two pressing plates and correspondingly passing through the two vertical springs downward and inserted into the radial end holes at both ends of the film feeding driven roller; the end of the release film paper pulled out from the release film paper roll on the release film paper mechanism passes through between the film feeding driving roller and the film feeding driven roller;

[0028] The release film paper cutting mechanism includes a cutting bottom plate, a bottom knife, an upper knife, and a release film paper cutting cylinder; the cutting bottom plate is installed between the rear end faces of the two upper small wallboards corresponding to the driving roller in the film feeding mechanism for the release film paper; the bottom knife is U-shaped. On the surface of each of the two vertical parts on both sides, two threaded holes are opened, and on the surface of the horizontal cutting edge part of the bottom knife, three bolt perforations are opened, so that the bottom knife is installed on the rear end face of the cutting bottom plate through three screws; the upper knife is inverted U-shaped. On the surface of each of the two vertical parts on both sides of the upper knife, a vertical sliding groove is opened, and a threaded connection hole is opened below each of the two vertical sliding grooves. The upper knife is installed on the rear end face of the bottom knife through two pairs of horizontal shouldered screws correspondingly inserted into the two vertical sliding grooves and two pairs of gaskets and horizontal springs sequentially sleeved on the two horizontal shouldered screws; the release film paper cutting cylinder is vertically installed on the working platform and is located between the front sides of the two upper small wallboards. The piston rod of the release film paper cutting cylinder is connected to the two threaded connection holes on the upper knife through a cylinder connecting plate and two screws. A section of release film paper sent out by the film feeding mechanism for the release film paper is located between the horizontal cutting edge part of the bottom knife and the horizontal cutting edge part of the upper knife.

[0029] The above-mentioned automatic bundling machine for the cigarette case production line, wherein,

[0030] The film laminating paper mechanism includes a rodless cylinder seat installed on the right side of the bottom surface of the middle plate, a front-back rodless cylinder installed on the bottom surface of the rodless cylinder seat, and a finger cylinder installed on the slider of the front-back rodless cylinder and opposite to the film laminating paper feeding mechanism.

[0031] The above-mentioned automatic bundling machine for the cigarette box production line, wherein,

[0032] The film laminating paper pressing-down mechanism includes a film laminating paper pressing-down cylinder installed on the bottom surface of the top plate and above the bundling opening of the working platform, and a film laminating paper pressing-down plate installed at the lower end of the piston rod of the film laminating paper pressing-down cylinder and passing through the pressing plate hole opened on the middle plate.

[0033] The film laminating paper bending mechanism includes two first bending cylinders hinged downward on the bottom surface of the top plate and corresponding to the front and rear sides of the film laminating paper pressing-down cylinder respectively, two first bending plates with their inner ends hinged to the front and rear ends of the middle plate respectively, two bending cylinder seats installed at the middle parts of the inner sides of the top surfaces of the two first bending plates respectively and hinged to the lower ends of the piston rods of the two first bending cylinders respectively, two second bending cylinders hinged to the outer ends of the two bending cylinder seats respectively, and two second bending plates with their bottoms hinged to the outer ends of the two first bending plates respectively and hinged to the piston rod ends of the two second bending cylinders respectively.

[0034] The above-mentioned automatic bundling machine for the cigarette box production line, wherein,

[0035] The cardboard lifting mechanism includes two lower small wallboards connected to the bottom surface of the working platform and corresponding to the front and rear parts of the bundling opening respectively, a bottom plate bridging between the lower ends of the two lower small wallboards, a lifting cylinder installed upward on the bottom plate, a transition plate installed at the piston rod end of the lifting cylinder, and two lifting plates fixed to the front and rear ends of the top surface of the transition plate respectively.

[0036] The film laminating paper hot bonding mechanism includes a hot bonding cylinder installed in the middle of the transition plate of the cardboard lifting mechanism, and a hot head installed at the end of the piston rod of the hot bonding cylinder through a heat insulation plate.

[0037] The above-mentioned automatic bundling machine for the cigarette box production line, wherein the film laminating paper hot bonding mechanism further includes a silica gel strip installed at the top end of the hot head.

[0038] The above-mentioned automatic bundling machine for the cigarette case production line, wherein the finished product output table includes an output table front wallboard and an output table rear wallboard connected to the right end of the working platform, two output table driving rollers bridging between the left sides of the output table front wallboard and the output table rear wallboard, several output table driven rollers bridging at intervals between the right sides of the output table front wallboard and the output table rear wallboard, a motor installed at the lower middle part under the rear ends of the two output table driving rollers on the left side of the output table rear wallboard, three synchronous belt pulleys respectively installed on the rear ends of the two output table driving rollers and the output shaft of the motor, and a synchronous belt wound around the three synchronous belt pulleys.

[0039] The above-mentioned automatic bundling machine for the cigarette case production line, wherein the finished product pushing mechanism includes a finished product pushing cylinder installed front and back through a cylinder seat at the right rear end of the working platform and a push plate installed at the piston rod end of the finished product pushing cylinder.

[0040] The automatic bundling machine for the cigarette case production line of the present invention has the following characteristics:

[0041] 1. Compact structure, reasonable layout, small floor area, convenient to operate and good safety performance;

[0042] 2. Stable operation, low failure rate, and can greatly improve the operation stability of the cigarette case cardboard stack bundling machine;

[0043] 3. Good bundling quality, consistent tightness of the cigarette case cardboard stack after bundling, neat bundling positions of the laminating paper on the cigarette case cardboard stack, well adapting to the requirements of cigarette production equipment and improving the working efficiency of cigarette production equipment;

[0044] 4. Precise cooperation can be formed among the cardboard feeding unit, the bundling unit and the finished product output unit, the whole bundling process does not require manual labor, realizes full automation, and improves the bundling work efficiency. Brief Description of the Drawings

[0045] Figure 1 is the front view of the automatic bundling machine for the cigarette case production line of the present invention;

[0046] Figure 2 is Figure 1 the left side view of

[0047] Figure 3 is Figure 1 the top view of

[0048] Figure 4 is Figure 1 the view taken along the A-A direction in

[0049] Figure 5 is Figure 1 the view taken along the B-B direction in

[0050] Figure 6 is Figure 1 the C-C direction view in;

[0051] Figure 7 is Figure 3 the D-D direction view in;

[0052] Figure 8 is the top view of the paper feeding board mechanism in the automatic strapping machine of the present invention;

[0053] Figure 8a is Figure 8 the E-E direction view in;

[0054] Figure 8b is Figure 8a the F-F direction view in;

[0055] Figure 9 is the structural schematic diagram of the plastic film paper placing mechanism in the automatic strapping machine of the present invention;

[0056] Figure 10 is the left view of the plastic film paper feeding mechanism and the plastic film paper cutting mechanism in the automatic strapping machine of the present invention;

[0057] Figure 10a is Figure 10 the left view of;

[0058] Figure 10b is Figure 10 the top view of;

[0059] Figure 10c is the structural schematic diagram of the cutting bottom plate in the plastic film paper cutting mechanism;

[0060] Figure 10d is the structural schematic diagram of the bottom knife in the plastic film paper cutting mechanism;

[0061] Figure 10e is the structural schematic diagram of the upper knife in the plastic film paper cutting mechanism;

[0062] Figure 11 is the left view of the plastic film paper pulling mechanism in the automatic strapping machine of the present invention;

[0063] Figure 11a is Figure 11 the right view of;

[0064] Figure 12 is the front view of the plastic film paper pressing mechanism, the paper board lifting mechanism, the plastic film paper bending mechanism and the plastic film paper hot bonding mechanism in the automatic strapping machine of the present invention;

[0065] Figure 12a is Figure 12Left side view;

[0066] Figure 12b is Figure 12 View G - G in

[0067] Figure 13 Front view of the finished product output table in the automatic strapping machine of the present invention;

[0068] Figure 13a Top view of the finished product output table in the automatic strapping machine of the present invention;

[0069] Figure 13b is Figure 13 Left side view of

[0070] Figure 14 Top view of the finished product pushing mechanism in the automatic strapping machine of the present invention;

[0071] Figure 14a is Figure 14 View H in

[0072] Figure 15a 、 Figure 15b 、 Figure 15c and Figure 15d are schematic diagrams of the strapping process in the automatic strapping machine of the present invention. Detailed implementation manners

[0073] The present invention will be further described below in conjunction with the accompanying drawings.

[0074] Please refer to Figures 1 to 14a , the automatic strapping machine for the cigarette box production line of the present invention includes a frame, a cardboard output unit, a strapping unit, and a finished product output unit.

[0075] The rack includes a lower bracket 1A, a positioning back plate 14 and an upper bracket. Among them, the lower bracket 1A includes four support columns 11, a horizontal support frame 12 fixed between the lower parts of the four support columns 11, a working platform 10 fixed on the top surfaces of the four support columns 11 with a notch opened in the middle of the rear end, and a middle support column 13 fixed between the middle of the front side of the horizontal support frame 12 and the middle of the bottom surface of the front side of the working platform 10. Two guiding grooves 101 are transversely opened in the middle of the left side of the working table 10, and a bundling opening is opened in the middle of the right side of the working table 10. The bundling opening includes a hot head hole 102 and two lifting ports 103 symmetrically located on the left and right sides of the hot head hole 102. The positioning back plate 14 is fixed on the working platform 10 and is parallel to the front side of the two guiding grooves 101. The upper bracket includes six long columns 15 fixed in the middle of the top surface of the working platform 10, a top plate 16 fixed on the top surfaces of the six long columns 15, and an intermediate plate 17 suspended below the top plate 16 through four short columns 18 and located directly above the bundling opening. The width of the intermediate plate 17 is adapted to the width of a stack of cigarette box cardboard stacks 100. Two start buttons 19 are installed on the left side of the working platform 10.

[0076] The cardboard feeding unit includes a cardboard pressing mechanism 2A and a cardboard feeding mechanism 2B. Among them,

[0077] The cardboard pressing mechanism 2A is installed on the bottom surface of the top plate 16 and is located directly above the two guiding grooves 101. The cardboard pressing mechanism 2A includes a cardboard pressing cylinder 21 vertically installed on the bottom surface of the top plate 16 through a cushion block and a cardboard pressing plate 22 installed at the lower end of the piston rod of the cardboard pressing cylinder 21. A stack of cigarette box cardboard stacks 100 located on the working platform 10 with its front side leaning against the positioning back plate 14 is pressed flat by the cardboard pressing cylinder 21 and the cardboard pressing plate 22.

[0078] The cardboard feeding mechanism 2B is installed on the working platform 10 and is located on the lower left side of the cardboard pressing mechanism 2A. The cardboard feeding mechanism 2B includes a left-right rodless cylinder 24 horizontally installed on the bottom surface of the working platform 10 through a cylinder seat 23, a U-shaped connecting piece 25 installed on the top surface of the slider 240 of the left-right rodless cylinder 24 and passing upward through the working platform 10 from the two guiding grooves 101, and a cardboard feeding plate 26 installed on the upper right end surface of the connecting piece 25. The flattened stack of cigarette box cardboard stacks 100 is pushed to the position of the bundling opening to the right by the left-right rodless cylinder 24 and the cardboard feeding plate 26.

[0079] The bundling unit includes a release film paper mechanism 3A, a film paper feeding mechanism 3B, a film paper pulling mechanism 4, a film paper pressing-down mechanism 5, a film paper cutting mechanism 6, a cardboard lifting mechanism 7A, a film paper bending mechanism 8 and a film paper hot-bonding mechanism 7B. Among them,

[0080] The film-laying paper feeding mechanism 3A is installed on the right front side of the lower support 1A; the film-laying paper feeding mechanism 3A includes two bearings 31 respectively installed in the middle of the middle support column 13 and the middle of a support column 11 supporting the right front end of the working platform 10, a film-releasing roller 30 straddling between the two bearings 31, a positioning ring 32a fixed on the film-releasing roller 30, a tensioning taper 32b fixed on the film-releasing roller 30, and a film-coated paper roll 20 (a layer of film covered on the film-coated paper can generate viscosity after high temperature) sleeved between the positioning ring 32a and the tensioning taper 32b through a core tube 3.

[0081] The film-feeding mechanism 3B is installed on the upper right front part of the working platform 10; the film-feeding mechanism 3B includes two upper small wallboards 33, a film-feeding cylinder 34, a swing arm 35, a film-feeding driving roller 36a, a film-feeding driven roller 36b, and a film-feeding roller pressure adjusting mechanism; wherein, the two upper small wallboards 33 are fixed on the working platform 10, one on the left and one on the right. A blind hole is vertically opened in the middle of the top surface of each of the two upper small wallboards 33, and a through hole perpendicular to the bottom of the blind hole is opened on the upper surface of each of the two upper small wallboards 33; the film-feeding cylinder 34 is hinged on the working platform 10 through a base and is located on the left side of the left upper small wallboard 33; one end of the swing arm 35 is fixedly connected to the end of the piston rod of the film-feeding cylinder 34; the left and right ends of the film-feeding driving roller 36a are respectively installed on the upper parts of the two upper small wallboards 33 through one-way bearings 36, and the end of the film-feeding driving roller 36a extending out of the left end of the left upper small wallboard 33 is also hinged to the other end of the swing arm 35 through a one-way bearing 36; the left and right ends of the film-feeding driven roller 36b are respectively inserted into the through holes on the two upper small wallboards 33 and are tangent to the upper part of the film-feeding driving roller 36a; the film-feeding roller pressure adjusting mechanism includes two pressing plates 37 respectively arranged on the top surfaces of the two upper small wallboards 33, two vertical springs 38 respectively installed in the blind holes of the two upper small wallboards 33, and two vertical shouldered screws 39 installed in the threaded jacks on the two pressing plates 37 and respectively passing through the two vertical springs 38 downward and inserted into the radial end holes at both ends of the film-feeding driven roller 36b; the end of the film-coated paper 200 pulled out from the film-coated paper roll 20 on the film-laying paper feeding mechanism 3A passes through between the film-feeding driving roller 36a and the film-feeding driven roller 36b. By the extension of the piston rod of the film-feeding cylinder 34, the swing arm 35 swings up and down. Due to the action of the one-way bearing 36, the film-feeding driving roller 36a can only rotate clockwise, while the film-feeding driven roller 36b rotates counterclockwise, and the film-coated paper 200 is conveyed out for a certain length to facilitate the subsequent film-pulling mechanism 4 to pull the film-coated paper.

[0082] The film laminating paper mechanism 4 is installed on the right side of the bottom surface of the intermediate plate 17. The film laminating paper mechanism 4 includes a rodless cylinder seat 41 connected to the right side of the bottom surface of the intermediate plate 17, a front-back rodless cylinder 42 installed on the bottom surface of the rodless cylinder seat 41, and a finger cylinder 43 installed on the slider 420 of the front-back rodless cylinder 42 through a bracket 430 and opposite to the finger cylinder 43 of the film feeding mechanism 3B. The finger cylinder 43 first bites forward the end of the film laminating paper 200 sent out by the film feeding mechanism 3B through the front-back rodless cylinder 42, and then the finger cylinder 43 drives the end of the film laminating paper 200 to pull backward through the front-back rodless cylinder 42, so that a section of the film laminating paper 200 is located above the cigarette box cardboard stack 100.

[0083] The film laminating paper pressing mechanism 5 is installed on the bottom surface of the top plate 16 and directly above the bundling opening. The film laminating paper pressing mechanism includes a film laminating paper pressing cylinder 51 installed on the bottom surface of the top plate 16 and above the bundling opening of the working platform 10, and a film laminating paper pressing plate 52 installed at the lower end of the piston rod of the film laminating paper pressing cylinder 51 and passing through the pressing plate hole opened on the intermediate plate 10; the middle part of a section of the film laminating paper 200 located above the cigarette box cardboard stack 100 is pressed downward onto the top surface of the cigarette box cardboard stack 100 through the film laminating paper pressing cylinder 51 and the film laminating paper pressing plate 52.

[0084] The film-coated paper cutting mechanism 6 is installed at the front end of the film-coated paper feeding mechanism 3B. The film-coated paper cutting mechanism 6 includes a cutting bottom plate 61, a bottom knife 62, an upper knife 63, and a film-coated paper cutting cylinder 67. Among them, the cutting bottom plate 61 is a long strip plate and is installed between the rear end faces of two upper small wallboards 33 corresponding to the film feeding driving roller 36a in the film-coated paper feeding mechanism 3B. The bottom knife 62 is U-shaped. Two threaded holes are respectively opened on the surfaces of the vertical parts on both sides of the bottom knife 62, and three bolt through holes are opened on the surface of the horizontal cutting edge part of the bottom knife 62, so that the bottom knife 62 is installed on the rear end face of the cutting bottom plate 61 through three screws. The upper knife 63 is inverted U-shaped. A vertical sliding groove 631 is respectively opened on the surfaces of the vertical parts on both sides of the upper knife 63, and a threaded connection hole 632 is respectively opened below the two vertical sliding grooves 631. The upper knife 63 is installed on the rear end face of the bottom knife 62 through two pairs of transverse shouldered screws 64 inserted into the two vertical sliding grooves 631 in a one-to-one correspondence, two pairs of gaskets 65 sleeved on the two transverse shouldered screws 64 in a one-to-one correspondence in sequence, and two transverse springs 66. The film-coated paper cutting cylinder 67 is vertically upward installed on the working platform 10 through a bottom frame 670 and is located between the front sides of the two upper small wallboards 33. The piston rod of the film-coated paper cutting cylinder 67 is connected to two threaded connection holes on the upper knife 63 through a cylinder connection plate 68 and two screws. A section of film-coated paper 200 sent out by the film-coated paper feeding mechanism 3B is located between the horizontal cutting edge part of the bottom knife 62 and the horizontal cutting edge part of the upper knife 63. By retracting the piston rod of the film-coated paper cutting cylinder 67, the upper knife 63 is pulled down, so that the horizontal cutting edge part of the upper knife 63 and the horizontal cutting edge part of the bottom knife 62 jointly cut off the tail end of a section of film-coated paper 200.

[0085] The cardboard lifting mechanism 7A is installed below the working platform 10 corresponding to the bundling opening. The cardboard lifting mechanism 7A includes two lower small wallboards 71 connected to the bottom surface of the working platform 10 and respectively located at the front and rear parts of the bundling opening in a one-to-one correspondence, a bottom plate 72 straddling between the lower ends of the two lower small wallboards 71, a lifting cylinder 70 installed upward on the bottom plate 72, a transition plate 73 installed at the piston rod end of the lifting cylinder 70, and two lifting plates 74 respectively fixed at the front and rear ends of the top surface of the transition plate 73. The cylinder diameter of the lifting cylinder 70 is larger than the cylinder diameter of the film-coated paper pressing cylinder 51. When the piston rod of the lifting cylinder 70 extends and the cigarette box cardboard stack 100 is lifted through the lifting plate 74, the piston rod of the film-coated paper pressing cylinder 51 will retract until the top surface of the cigarette box cardboard stack 100 contacts the bottom surface of the intermediate plate 17.

[0086] The laminating paper bending mechanism 8 is installed on the bottom surface of the top plate 16 and is located on both sides of the laminating paper pressing mechanism 5. The laminating paper bending mechanism 8 includes two first bending cylinders 81 that are hinged downward on the bottom surface of the top plate 16 and are respectively located on the front and rear sides of the laminating paper pressing cylinder 51, two first bending plates 82 whose inner ends are respectively hinged to the front and rear ends of the intermediate plate 17 through a pair of bending plate inner hinges 80a, two bending cylinder seats 83 that are respectively installed in the middle of the inner sides of the top surfaces of the two first bending plates 82 and are respectively hinged to the lower ends of the piston rods of the two first bending cylinders 81, two second bending cylinders 84 that are respectively hinged to the outer ends of the two bending cylinder seats 83, and two second bending plates 85 that are respectively hinged to the outer ends of the two first bending plates 82 through a pair of bending plate outer hinges 80b and are respectively hinged to the piston rod ends of the two second bending cylinders 84 through a cylinder hinge 80c; first, the laminating paper 200 located on the front and rear sides of the top surface of the cigarette box cardboard stack 100 is vertically bent downward by the two first bending cylinders 81 and the two first bending plates 82, and then the laminating paper 200 located on the front and rear sides of the bottom of the cigarette box cardboard stack 100 is horizontally bent relatively and closely attached to the bottom surface of the cigarette box cardboard stack 100 (the overlapping part with the laminating paper 200) quickly and slowly by the two second bending cylinders 84 and the two second bending plates 85;

[0087] The laminating paper hot bonding mechanism 7B is installed inside the cardboard lifting mechanism 7A. The laminating paper hot bonding mechanism 7B includes a hot bonding cylinder 75 installed in the middle of the top surface of the transition plate 73 of the cardboard lifting mechanism 7A, a hot head 77 installed at the end of the piston rod of the hot bonding cylinder 75 through a heat insulation plate 76, and a silica gel strip 78 installed at the top end of the hot head 77; the overlapping part in the middle of the laminating paper 200 on the bottom surface of the cigarette box cardboard stack 100 is firmly hot bonded by the hot bonding cylinder 75, the hot head 77, and the silica gel strip 78 to form a finished cigarette box cardboard stack 100A.

[0088] The finished product output unit includes a finished product output table 9A, a finished product receiving table 9B, and a finished product pushing mechanism 9, where,

[0089] The finished product output table 9A is connected to the gap of the working platform 10. The finished product output table 9A includes an output table front wallboard 91a and an output table rear wallboard 91b that are connected to the right-end gap of the working platform 10, an output table driving roller 92a that is bridged between the left side of the output table front wallboard 91a and the left side of the output table rear wallboard 91b, several output table driven rollers 92b that are bridged between the right side of the output table front wallboard 91a and the right side of the output table rear wallboard 91b at intervals, a motor 90 that is installed on the left side of the output table rear wallboard 91b and is located in the middle below the rear ends of the two output table driving rollers 92a, three synchronous belt pulleys 93 that are respectively installed on the rear ends of the two output table driving rollers 92a and the output shaft of the motor 90, and a synchronous belt 94 that is wound around the three synchronous belt pulleys 93. The finished product output table 9A receives the finished product cigarette box cardboard stack 100A that is pushed out of the bundling opening to the right by the latter stack of cigarette box cardboard stacks 100.

[0090] The finished product receiving table 9B is connected to the right side of the output table front wallboard 91a of the finished product output table 9A.

[0091] The finished product pushing mechanism 9 is installed at the rear part of the right end of the working platform 10. The finished product pushing mechanism 9 includes a finished product pushing cylinder 96 that is installed in the front-back direction through a connecting seat 95 at the right rear end of the working platform 10, and a push plate 97 that is installed at the piston rod end of the finished product pushing cylinder 96. The finished product cigarette box cardboard stack 100A located on the finished product output table 9A is pushed forward onto the finished product receiving table 9B through the finished product pushing cylinder 96 and the push plate 97.

[0092] The automatic bundling machine for the cigarette box production line of the present invention works according to the following steps:

[0093] 1. Place the cigarette box cardboard stack 100 that has been folded and is to be bundled on the working platform 10, make the left end face of the cigarette box cardboard stack 100 lean against the right end face of the cardboard feeding plate 26 of the cardboard feeding mechanism 2B, and make the front side face of the cigarette box cardboard stack 100 lean against the rear surface of the positioning back plate 14 of the cardboard pressing mechanism 2A. Then, simultaneously press the two start buttons 19 (using two start buttons 19 is for safety. It is necessary to press the two start buttons 19 with both hands at the same time to start the bundling machine to prevent one hand from still staying on the working platform 10 when starting the machine) to start the bundling machine.

[0094] 2. The piston rod of the cardboard pressing cylinder 21 of the cardboard pressing mechanism 2A extends, driving the cardboard pressing plate 22 to press down, flattening the deformed cigarette box cardboard stack 100 after folding, and then the cardboard pressing cylinder 21 immediately resets. The left-right direction rodless cylinder 24 of the cardboard feeding mechanism 2B pushes the cigarette box cardboard stack 100 to the right to the bundling position through the cardboard feeding plate 26.

[0095] 3. First, the film feeding cylinder 34 in the film feeding mechanism 3B works to convey the laminating paper 200 for a certain distance. Then, the front-back rodless cylinder 42 in the laminating paper pulling mechanism 4 works. After pushing the finger cylinder 43 mounted on the slider of the front-back rodless cylinder 42 forward to near the end of the laminating paper 200, the fingers of the finger cylinder 43 work to bite the end of the laminating paper 200. Then, the front-back rodless cylinder 42 retracts to pull a section of the laminating paper 200 above the cigarette carton board stack 100 and wait;

[0096] 4. The piston rod of the laminating paper pressing cylinder 51 in the laminating paper pressing mechanism 5 extends, and through the laminating paper pressing plate 52, the middle part of a section of the laminating paper 200 above the cigarette carton board stack 100 is pressed down onto the top surface of the cigarette carton board stack 100 (see Figure 15a ), preventing the laminating paper 200 from shifting;

[0097] 5. The piston rod of the lifting cylinder 70 in the cardboard lifting mechanism 7A extends, and through two lifting plates 74, the cigarette carton board stack 100 is lifted until the top surface of the cigarette carton board stack 100 contacts the bottom surface of the middle plate 17 (see Figure 15b );

[0098] 6. The piston rod of the laminating paper cutting cylinder 67 in the laminating paper cutting mechanism 6 retracts downward, causing the upper knife 63 to move downward. The upper knife 63 and the bottom knife 62 jointly cut the tail end of a section of the laminating paper 200. At the same time, the fingers of the finger cylinder 43 in the laminating paper pulling mechanism 4 release the end of the laminating paper 200;

[0099] 7. The piston rods of the two first bending cylinders 81 in the laminating paper bending mechanism 8 extend simultaneously, and through two first folding plates 82, the laminating paper 200 on the front and rear sides of the top surface of the cigarette carton board stack 100 is bent downward by 90 degrees (see Figure 15c );

[0100] 8. The piston rods of the two second bending cylinders 84 extend at different speeds, and through two second bending plates 85, the laminating paper 200 is bent relatively by 90 degrees, so that there are overlapping parts at both ends of the laminating paper 200;

[0101] 9. The piston rod of the hot bonding cylinder 75 in the laminating paper hot bonding mechanism 7B extends, and through the hot head 77 and the silicone strip 78, the overlapping part in the middle of the laminating paper 200 on the bottom surface of the cigarette carton board stack 100 is firmly hot bonded (see Figure 15d ), forming the finished cigarette carton board stack 100A. Then, the piston rod of the hot bonding cylinder 75 retracts, the piston rods of the two second bending cylinders 84 retract, the piston rods of the two first bending cylinders 81 retract, the piston rod of the lifting cylinder 70 retracts, and the finished cigarette carton board stack 100A falls onto the working platform 10. The laminating paper pressing cylinder 51 retracts and waits for the next startup;

[0102] 10. Second, place the stack 100 of cigarette box cardboard that has been folded on the cigarette box flap folding machine onto the working platform 10. Start the strapping machine again by pressing the two start buttons 19. The left-right rodless cylinder 24 of the cardboard feeding mechanism 2B pushes the stack 100 of cigarette box cardboard placed on the working platform for the second time to the strapping position to the right through the cardboard feeder 26. During the pushing process, the stack 100A of finished cigarette box cardboard that has been strapped for the first time is pushed from the strapping position to the finished product output table 9A. When the stack 100A of finished cigarette box cardboard touches the two output table driving rollers 92a of the finished product output table 9A, the stack 100A of finished cigarette box cardboard will be output to the right part of the finished product output table 9A; the stack 100A of finished cigarette box cardboard waits at the right part of the finished product output table 9A until the set time. The piston rod of the finished product pushing cylinder 96 in the finished product pushing mechanism 9 extends and pushes the stack 100A of finished cigarette box cardboard located at the right part of the finished product output table 9A forward to the finished product receiving table 9B, waiting for the employees to collect; and so on in a cycle...

[0103] The above embodiments are only for illustrating the present invention, rather than limiting the present invention. Those skilled in the relevant technical fields can also make various transformations or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by each claim.

Claims

1. An automatic strapping machine for a cigarette box production line, comprising a frame, a paperboard output unit, a strapping unit and a finished product output unit; characterized in that: The frame includes a lower bracket, a positioning plate and an upper bracket; the lower bracket includes four support columns, a horizontal support frame fixed between the lower parts of the four support columns, a working platform fixed on the top surface of the four support columns and having a notch in the middle of the rear end, and a middle support column fixed between the middle of the front side of the horizontal support frame and the middle of the front bottom surface of the working platform; two guide grooves are horizontally provided in the left middle part of the working platform, and a bundling opening is provided in the right middle part of the working platform; the positioning plate is fixed on the working platform and is located parallel to the front side of the two guide grooves; the upper bracket includes six long columns fixed on the working platform, a top plate fixed on the top surface of the six long columns, and an intermediate plate suspended below the top plate by four short columns and located directly above the bundling opening, the width of the intermediate plate being adapted to the width of a stack of cigarette box cardboard; The paperboard discharging unit includes a paperboard pressing mechanism and a paperboard feeding mechanism; wherein, The paperboard pressing mechanism is installed on the bottom surface of the top plate and is located directly above the two guide grooves to press a stack of cigarette box paperboards flat; The paperboard feeding mechanism is installed on the working platform and is located below and to the left of the paperboard pressing mechanism, and pushes the flattened stack of cigarette box paperboards to the right to the position of the bundling opening; The strapping unit includes a laminated paper placing mechanism, a laminated paper feeding mechanism, a laminated paper pulling mechanism, a laminated paper pressing mechanism, a laminated paper cutting mechanism, a cardboard lifting mechanism, a laminated paper bending mechanism and a laminated paper hot-bonding mechanism; wherein, The coating paper placing mechanism is installed on the right front side of the lower bracket; The laminated paper feeding mechanism is installed at the right front part of the top surface of the working platform, and feeds the laminated paper released by the laminated paper releasing mechanism backward for a section; The laminated paper pulling mechanism is installed on the bottom surface of the middle plate corresponding to the laminated paper feeding mechanism, firstly bites the end of the laminated paper fed by the laminated paper feeding mechanism, and then pulls the laminated paper backward, so that a section of the laminated paper is located above the cigarette box cardboard stack; The laminated paper pressing mechanism is installed on the bottom surface of the top plate and is located just above the bundling opening, and presses the middle portion of a section of laminated paper located above the cigarette box cardboard stack onto the top surface of the cigarette box cardboard stack; The laminated paper cutting mechanism is installed at the front end of the laminated paper feeding mechanism to cut off the tail end of a section of laminated paper fed by the laminated paper feeding mechanism; The cardboard lifting mechanism is installed below the working platform corresponding to the bundling opening, and lifts the cigarette box cardboard stack until the top surface of the cigarette box cardboard stack contacts the bottom surface of the middle plate; The laminated paper bending mechanism is installed on the bottom surface of the top plate and is located on both sides of the laminated paper pressing mechanism, firstly, the laminated paper located on both sides of the top surface of the cigarette box paperboard stack is vertically bent downward, and then the laminated paper located on both sides of the bottom of the cigarette box paperboard stack is relatively horizontally bent and closely attached to the bottom surface of the cigarette box paperboard stack; The laminated paper hot-bonding mechanism is installed inside the paperboard lifting mechanism to hot-bond the laminated paper middle heavy stack part on the bottom surface of the cigarette box paperboard stack firmly to form a finished cigarette box paperboard stack; The finished product output unit includes a finished product output station, a finished product receiving station and a finished product pushing mechanism, wherein: The finished product output platform is connected to the notch of the working platform to receive the finished product cigarette box cardboard stack pushed to the right from the bundling opening by the last cigarette box cardboard stack; The finished product receiving station is connected to the front end of the finished product output station; The finished product pushing mechanism is installed at the right rear end of the working platform to push the finished product cigarette box cardboard stack located on the finished product output platform forward to the finished product receiving platform.

2. The automatic strapping machine for cigarette box production line according to claim 1, characterized in that: The paperboard pressing mechanism comprises a paperboard pressing cylinder vertically mounted on the bottom surface of the top plate and a paperboard pressing cylinder mounted at the lower end of a piston rod of the paperboard pressing cylinder.

3. The automatic strapping machine for cigarette box production line according to claim 1, characterized in that: The paper feeding mechanism includes a left and right rodless cylinder horizontally installed on the bottom surface of the working platform, a U-shaped connecting piece installed on the top surface of the slider of the left and right rodless cylinder and passing through the working platform upward from two guide grooves, and a paper feeding piece installed on the upper right end surface of the connecting piece.

4. The automatic strapping machine for a cigarette box production line according to claim 1, characterized in that: The laminating paper unwinding mechanism comprises two bearing seats correspondingly mounted on the middle part of the middle support column and the middle part of a support column supported on the right front end of the working platform, an unwinding shaft straddling between the two bearing seats, a positioning ring fixed on the unwinding shaft, a tensioning cone head fixed on the unwinding shaft, and a laminating paper roll sleeved between the positioning ring and the tensioning cone head through a core tube; The film-feeding paper feeding mechanism includes two upper small wall panels, a film-feeding cylinder, a swing arm, an active film-feeding roller, a passive film-feeding roller and a film-feeding roller pressure regulating mechanism; the two upper small wall panels are fixed on the working platform, one on the left and one on the right, and a blind hole is vertically opened in the middle of the top surface of each of the two upper small wall panels, and a through hole vertically connected to the bottom of the blind hole is opened on the upper surface of each of the two upper small wall panels; the film-feeding cylinder is hinged on the working platform and is located on the left side of an upper small wall panel on the left; one end of the swing arm is fixedly connected to the piston rod end of the film-feeding paper feeding cylinder; the left and right ends of the active film-feeding roller are respectively installed on the upper part of the two upper small wall panels through a one-way bearing, and the extension of the active film-feeding roller is located on an upper The left end of the small wall panel is also hinged to the other end of the swing arm through a one-way bearing; the left and right ends of the passive film feeding roller are correspondingly inserted into the through holes on the two upper small wall panels and are tangent to the top of the active roller; the pressure adjustment mechanism of the film feeding roller includes two pressure plates correspondingly arranged on the top surfaces of the two upper small wall panels, two vertical springs correspondingly installed in the blind holes of the two upper small wall panels, and two vertical shoulder screws installed in the threaded sockets on the two pressure plates and inserted into the radial end holes at both ends of the passive film feeding roller after passing through the two vertical springs one by one downwardly; the end of the coated paper pulled out from the coated paper roll on the coating paper placing mechanism passes between the active film feeding roller and the passive film feeding roller; The coated paper cutting mechanism comprises a cutting bottom plate, a bottom knife, an upper knife and a coated paper cutting cylinder; the cutting bottom plate is installed between the rear end surfaces of the two upper small wall panels corresponding to the active roller in the coated paper feeding mechanism; the bottom knife is U-shaped, and two threaded holes are respectively provided on the surfaces of the vertical parts on both sides, and three bolt through holes are provided on the surface of the horizontal blade part of the bottom knife, so that the bottom knife is installed on the rear end surface of the cutting bottom plate through three screws; the upper knife is in an inverted U-shape, and a vertical slide groove is respectively provided on the surfaces of the vertical parts on both sides of the upper knife, and a threaded groove is respectively provided under the two vertical slide grooves The upper knife is installed on the rear end surface of the bottom knife through two pairs of horizontal shoulder screws inserted into two vertical slide grooves in a one-to-one manner and two pairs of gaskets and horizontal springs that are sequentially and one-to-one correspondingly sleeved on the two horizontal shoulder screws; the coated paper cutting cylinder is vertically upwardly installed on the working platform and is located between the front sides of the two upper small wall panels, and the piston rod of the coated paper cutting cylinder is connected to the two threaded connecting holes on the upper knife through a cylinder connecting plate and two screws, and a section of coated paper sent by the coated paper sending mechanism is located between the horizontal blade portion of the bottom knife and the horizontal blade portion of the upper knife.

5. The automatic strapping machine for a cigarette box production line according to claim 1, characterized in that: The coating paper pulling mechanism includes a rodless cylinder seat installed on the right side of the bottom surface of the middle plate, a front-to-back rodless cylinder installed on the bottom surface of the rodless cylinder seat, and a finger cylinder installed on the slider of the front-to-back rodless cylinder and opposite to the coating paper feeding mechanism.

6. The automatic strapping machine for a cigarette box production line according to claim 1, characterized in that: The laminated paper pressing mechanism comprises a laminated paper pressing cylinder installed on the bottom surface of the top plate and located above the bundling opening of the working platform, and a laminated paper pressing plate installed at the lower end of the piston rod of the laminated paper pressing cylinder and passing through the pressing plate hole opened on the middle plate; The coated paper bending mechanism includes two first bending cylinders hinged downwardly on the bottom surface of the top plate and located one-to-one at the front and rear sides of the coated paper pressing cylinder, two first bending plates whose inner ends are hinged one-to-one to the front and rear ends of the middle plate, two bending cylinder seats which are installed one-to-one in the middle of the inner sides of the top surfaces of the two first bending plates and are hinged one-to-one to the lower ends of the piston rods of the two first bending cylinders, two second bending cylinders which are hinged one-to-one to the outer ends of the two bending cylinder seats, and two second bending plates which are hinged one-to-one to the outer ends of the two first bending plates and are hinged one-to-one to the piston rod ends of the two second bending cylinders.

7. The automatic strapping machine for a cigarette box production line according to claim 1, characterized in that: The cardboard lifting mechanism comprises two lower small wall panels connected to the bottom surface of the working platform and correspondingly located at the front and rear parts of the bundling opening, a bottom plate spanning between the lower ends of the two lower small wall panels, a lifting cylinder mounted upwardly on the bottom plate, a transition plate mounted on the end of the piston rod of the lifting cylinder, and two lifting plates fixed one by one to the front and rear ends of the top of the transition plate; The laminated paper hot-stuck mechanism comprises a hot-stuck cylinder installed in the middle of the transition plate of the paperboard lifting mechanism and a hot-stuck head installed on the end of the piston rod of the hot-stuck cylinder through a heat insulation plate.

8. The automatic strapping machine for a cigarette box production line according to claim 7, characterized in that: The laminated paper hot-stuck mechanism also includes a silicone strip installed on the top of the hot-stuck head.

9. The automatic strapping machine for a cigarette box production line according to claim 1, characterized in that: The finished product output station includes an output station front wall panel and an output station rear wall panel connected to the right end of the working platform, two output station active rollers spanning between the left side of the output station front wall panel and the left side of the output station rear wall panel, a plurality of output station passive rollers spanning between the right side of the output station front wall panel and the right side of the output station rear wall panel at intervals, a motor installed on the left side of the output station rear wall panel and located in the middle below the rear end heads of the two output station active rollers, three synchronous pulleys installed one by one on the rear end heads of the two output station active rollers and the output shaft of the motor, and a synchronous belt wrapped around the three synchronous pulleys.

10. The automatic strapping machine for a cigarette box production line according to claim 1, characterized in that: The finished product pushing mechanism comprises a finished product pushing cylinder which is installed front-to-back at the right rear end of the working platform through a cylinder seat and a pushing plate which is installed on the piston rod end of the finished product pushing cylinder.

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