Stacking device for the loading system of a cigarette case inspection machine

Abstract

The present invention discloses a stacking and separating device for a feeding system of a cigarette case inspection machine, which comprises a lifting mechanism, a jacking mechanism, a plug plate mechanism, a side pushing mechanism and a longitudinal pushing mechanism. The jacking mechanism includes a jacking cylinder installed on a base and a cylinder base plate, and a stacking and separating top wheel, a top rod guide rail, two top rod rollers and a roller pressing mechanism installed on a piston rod of the jacking cylinder through a top rod; the cross section of the top rod guide rail is U-shaped, the bottom of the top rod guide rail is installed on the front part of the cylinder base plate through screws, and the heights of two side plates of the top rod guide rail increase in a curve shape from the rear to the front, so that the top surfaces of the two side plates are arc-shaped curved surfaces; the two top rod rollers are installed at two ends of a roller shaft penetrating through a shaft hole of the top rod, so that the two top rod rollers are correspondingly located on the top surfaces of the two side plates of the top rod guide rail; the roller pressing mechanism includes a pressing wheel, a spring seat, a spring and a pressing plate. The present invention can smoothly jack open a stack of cigarette case cardboard and separate it into stacks of cigarette case cardboard with a set thickness.

Description

Technical Field

[0001] The present invention relates to a packaging device, and more particularly to a stacking and separating device for a feeding system of a cigarette case inspection machine. Background Art

[0002] The general processes for producing cigarette case packaging products are: plate making, printing, bronzing, transfer laser, die cutting, inspection, and leaving the factory. During the printing process of cigarette cases, due to various reasons, there will inevitably be defects on the appearance of cigarette cases. Therefore, to ensure the quality of cigarette cases, manufacturers must use an inspection machine to conduct appearance inspections on the produced cigarette case cardboard, select qualified cigarette cases, and reject defective products. The inspection machine inspects each cigarette case cardboard one by one, and there are requirements for the height of each stack of cardboard during feeding of the inspection machine.

[0003] Since the die cutting of cigarette case cardboard is affected by the sharpness of the die cutting tool and the thickness of the cigarette case cardboard, the die cutting lines at the four "small square petals" positions of the cigarette case cardboard may not be completely cut through, resulting in adhesion. When the paper feeding mechanism of the inspection machine discharges paper, the small square petals of two overlapping cigarette case cardboards are likely to be scraped together, thereby causing damage to the cigarette case cardboard and greatly affecting the accuracy of subsequent surface quality inspection. In order to eliminate the adhesion of the uncut die cutting lines on the cigarette case cardboard and eliminate the phenomenon that the small square petals will be hooked by the cigarette case cardboard when the inspection machine conveys the cigarette case cardboard, it is necessary to send the cigarette case cardboard to the corner folding station equipped with a corner folding machine (see Patent ZL201610649579.3 or ZL201821706019.8) before entering the inspection machine, and the corner folding machine tears off the die cutting lines of the four small square petals of the cigarette case cardboard.

[0004] The cigarette case cardboard coming out of the die cutting machine needs to be neatly stacked into a stack with a fixed height by a stacking machine. However, the corner folding machine can only perform corner folding on cigarette case cardboard with a certain thickness. Therefore, before entering the corner folding station, it is also necessary to stack and separate the stacked cigarette case cardboard through a lifting and stacking device (a stack of cigarette case cardboard is generally divided into 7 - 8 stacks of cigarette case cardboard), which can not only meet the requirements of the corner folding machine but also meet the feeding thickness requirements of the inspection machine. Therefore, the feeding system of the inspection machine should include a cigarette case stacking and conveying device 100, a stacking and separating device 200, a corner folding machine 300, and a feeding platform 400 of the inspection machine 500 (see Figure 1)。The existing stacking and separating device (refer to the paper-breaking and paper-feeding machine for inspection machine in Patent No. 201510881426.7, which includes a lifting and stacking mechanism) includes a lifting bracket and a stacking cylinder. The stacking top block arranged opposite to the lifting bracket can perform a lifting action along an inclined direction towards the upper side of the printed matter stack (i.e., the printed matter stack to be stacked and separated) on the lifting bracket, so as to lift several upper printed matters of the printed matter stack 600 and split them into thin printed matter stacks. However, since the piston rod of the stacking cylinder extends and retracts in a straight line direction, although the stacking cylinder is installed obliquely, the stacking top block installed at the end of the piston rod also lifts several upper printed matters of the printed matter stack in the straight movement direction of the piston rod; due to the limitation of the in-place baffle on the other side of the printed matter stack, the movement trajectory of several upper printed matters after being pushed open is a curve upward, which does not conform to the straight movement direction of the piston rod. Therefore, the instability will occur after several upper printed matters are pushed open, and it is very difficult to neatly push the thin printed matter stack to the corner-folding station subsequently. In addition, this patent also discloses that the stacking cylinder is installed on the bracket via a spring, so that when the stacking top block performs a lifting action, the stacking cylinder can generate a certain swing angle under the action of the spring to achieve buffering, thereby avoiding damaging the printed matter. However, after the stacking cylinder generates a swing angle, the stacking top block will shift upward, resulting in the number of printed matters lifted by the stacking top block not reaching the set number. Summary of the Invention

[0005] The object of the present invention is to overcome the defects of the prior art and provide a stacking and separating device for the feeding system of a cigarette case inspection machine, which can stably push open a cigarette case cardboard stack and divide it into cigarette case cardboard stacks with a set thickness.

[0006] The object of the present invention is achieved as follows: A stacking and separating device of a feeding system for a cigarette case inspection machine is arranged in a stacking and separating station at the output end of a cigarette case stacking and conveying device and includes a lifting mechanism, a jacking mechanism, a plugging plate mechanism, a side pushing mechanism and a longitudinal pushing mechanism; the cigarette case stacking and conveying device includes a long conveyor belt and a short conveyor belt connected in sequence, and the speed of the long conveyor belt is less than the speed of the short conveyor belt; in the stacking and separating station, there are a positioning baffle near the output end of the cigarette case stacking and conveying device, a station baffle far from the output end of the cigarette case stacking and conveying device and parallel to the positioning baffle, a top frame vertically connected to the top of the station baffle, a jacking support straddling between the upper middle part of the positioning baffle and the upper middle part of the station baffle, a longitudinal pushing platform straddling between the upper part of the positioning baffle and the upper part of the station baffle, and a stack baffle vertically connected to the rear of the top frame and parallelly located above the rear of the positioning baffle; the lifting mechanism includes a driving mechanism installed at the lower part of the positioning baffle and a lifting support foot connected to the lifting driving mechanism; the jacking mechanism includes a jacking cylinder and a stacking and separating top wheel installed on the piston rod of the jacking cylinder through a jacking rod; the plugging plate mechanism includes a plugging plate cylinder horizontally installed on the bottom surface of the longitudinal pushing platform and a stacking and separating plugging plate connected to the piston rod of the plugging plate cylinder and at the same height as the longitudinal pushing platform; the side pushing mechanism includes a side pushing cylinder horizontally installed at the rear of the top frame and a side pushing plate installed on the piston rod of the side pushing cylinder and parallelly located above the rear of the stack baffle; the longitudinal pushing mechanism includes a longitudinal pushing cylinder installed at the middle of the tail end of the top frame and a longitudinal pushing plate installed on the piston rod of the longitudinal pushing cylinder; wherein,

[0007] The jacking mechanism further includes a base, a jacking rod guide rail, two jacking rod rollers and a roller pressing mechanism;

[0008] The base is a right triangle and is fixed on the side of the jacking support close to the cigarette case stacking and conveying device;

[0009] The jacking cylinder is installed on the inclined top surface of the base through a cylinder bottom plate;

[0010] A waist-shaped slot hole in the length direction is opened in the middle of the top surface of the jacking rod, and a shaft hole is coaxially opened on each of the two side surfaces in the middle of the jacking rod;

[0011] The cross section of the jacking rod guide rail is U-shaped. The bottom of the jacking rod guide rail is installed at the front of the cylinder bottom plate through screws. The distance between the inner side surfaces of the two side plates of the jacking rod guide rail is adapted to the width of the jacking rod. The height of the two side plates of the jacking rod guide rail increases in a curve shape from back to front, so that the top surfaces of the two side plates are arc-shaped surfaces;

[0012] Two jacking rod rollers are installed at both ends of a roller shaft passing through the shaft holes of the jacking rod, so that the two jacking rod rollers are respectively located on the top surfaces of the two side plates of the jacking rod guide rail;

[0013] The roller pressing mechanism includes a pressing wheel, a spring seat, a spring and a pressing plate; the outer diameter of the pressing wheel is larger than that of the ejector rod roller and is installed in the middle of the roller shaft and located in the waist-shaped slot hole of the ejector rod; the cross section of the spring seat is in an inverted U shape, a spring groove is opened at the front center of the lower end surface of the top plate of the spring seat, and two pressing plate slots symmetrically centered on the center of the spring groove are opened at the rear of the lower end surface of the top plate of the spring seat. The distance between the inner side surfaces of the two side plates of the spring seat is adapted to the width of the ejector rod guide rail, so that the two side plates of the spring seat are stuck on the outer side surface of the ejector rod guide rail and fixed on the ejector rod guide rail by bolts; the upper part of the spring is installed in the spring groove of the spring seat; the pressing plate includes a pressing plate body and a connecting part connected to the rear end of the pressing plate body and having a U-shaped cross section. A pin shaft hole is coaxially opened on the two side walls of the connecting part. The pressing plate body of the pressing plate extends between the lower end of the spring and the top of the pressing wheel, and the two side walls of the connecting part of the pressing plate are respectively inserted into the two pressing plate slots of the spring seat and installed on the spring seat through a pin shaft.

[0014] In the stacking device of the feeding system of the cigarette case inspection machine described above, an adjusting seat is further provided between the base and the cylinder base plate; the base includes a base plate and a base plate vertically connected to the top surface of the base plate and in a right triangle shape. A circular through hole and a waist-shaped through hole are respectively opened in the upper and lower parts of the surface of the base plate; the adjusting seat includes a top plate and a connecting plate vertically connected to the bottom surface of the top plate. Two threaded holes and connecting threaded holes corresponding to the circular through hole and the waist-shaped through hole on the base plate are opened on the surface of the connecting plate, so that the adjusting seat is installed on the base through a shoulder screw and a fastening screw.

[0015] In the stacking device of the feeding system of the cigarette case inspection machine described above, the lifting support feet are formed by connecting two inverted L-shaped plates up and down; the lifting driving mechanism includes a support foot guide rail fixed in the vertical direction near the in-place baffle, a synchronous belt mechanism installed beside the support foot guide rail, and a slider fixed on the synchronous belt of the synchronous belt mechanism and installed on the support foot guide rail; the synchronous belt mechanism includes a servo motor, a driving synchronous belt wheel installed on the output shaft of the servo motor, a driven synchronous belt wheel installed above the driving synchronous belt wheel, and a synchronous belt wound between the driving synchronous belt wheel and the driven synchronous belt wheel; the lower end of the lifting support foot is fixed on the slider.

[0016] The stacking device of the feeding system of the cigarette case inspection machine of the present invention has the following characteristics:

[0017] 1) A ejector guide rail is provided at the bottom of the ejector rod connected to the piston rod of the jacking cylinder, and the top surface of the ejector guide rail is designed as a corresponding arc-shaped curved surface according to the arc-shaped curve movement track when the cigarette box cardboard is jacked open, so that the stacking and separating top wheel installed at the front end of the ejector rod can be pressed against the side of the cigarette box cardboard along the track after the cigarette box cardboard is jacked open, and can accurately jack open the set number of cigarette box cardboards;

[0018] 2) A ejector roller is provided on each side of the ejector rod. Not only does it enable the ejector rod to move smoothly on the arc-shaped curved surface of the ejector guide rail, but also a roller pressing mechanism is provided between the two ejector rollers, which can ensure that the two ejector rollers are always in contact with the arc-shaped curved surface of the ejector guide rail, so as to ensure that the stacking and separating top wheel also smoothly presses against the side of the cigarette box cardboard along the track of the arc-shaped curved surface of the ejector guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the plan view of the feeding system of the cigarette box inspection machine;

[0020] Figure 2 is the front view of the stacking device of the feeding system of the cigarette box inspection machine of the present invention;

[0021] Figure 3 is the schematic structural view of the lifting mechanism in the stacking device of the present invention;

[0022] Figure 4 is the schematic structural view of the jacking mechanism in the stacking device of the present invention;

[0023] Figure 5 is Figure 4 the right side view of

[0024] Figure 6 is the partial structural view of the jacking mechanism in the stacking device of the present invention;

[0025] Figure 7 is Figure 6 the view in the direction of A-A in

[0026] Figure 8 is Figure 6 the view in the direction of B-B in

[0027] Figure 9a is the schematic view before the jacking mechanism in the stacking device of the present invention jacks open the cigarette box cardboard stack;

[0028] Figure 9b is the schematic view when the jacking mechanism in the stacking device of the present invention jacks open the cigarette box cardboard stack;

[0029] Figure 9c is the schematic view when the stacking and inserting plate is inserted after the jacking mechanism in the stacking device of the present invention jacks open the cigarette box cardboard stack. DETAILED DESCRIPTION OF THE INVENTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] Please refer to Figures 2 to 8 and also refer to Figure 1 , the stacking device of the feeding system of the cigarette case inspection machine of the present invention is arranged in the stacking station at the output end of the cigarette case stacking and conveying device and includes a lifting mechanism, a jacking mechanism, a plugging plate mechanism, a side pushing mechanism and a longitudinal pushing mechanism.

[0032] The cigarette case stacking and conveying device 100 includes a long conveyor belt 101 and a short conveyor belt 102 connected in sequence, and the speed of the long conveyor belt 101 is less than the speed of the short conveyor belt 102;

[0033] In the stacking station, there are a positioning baffle 11 close to the output end of the short conveyor belt 102, a station baffle 12 far from the output end of the short conveyor belt 102 and parallel to the positioning baffle 11, a top frame 13 vertically connected to the top of the station baffle 12, a jacking support 14 straddling between the upper middle part of the positioning baffle 11 and the upper middle part of the station baffle 12, a longitudinal pushing platform 15 straddling between the upper part of the positioning baffle 11 and the upper part of the station baffle 12, and a stack baffle 16 vertically connected to the rear of the top frame 13 (opposite to the transportation direction of the cigarette case cardboard stack) and parallelly located above the rear of the positioning baffle 11.

[0034] The lifting mechanism includes a lifting drive mechanism and a lifting support foot 28 connected to the lifting drive mechanism; the lifting drive mechanism includes a vertical support foot guide rail 21 fixed on the positioning baffle 11, a synchronous belt mechanism installed beside the support foot guide rail 21, a slider 27 fixed on the synchronous belt 25 through a synchronous belt pressing plate 26 and installed on the support foot guide rail 21; the synchronous belt mechanism includes a servo motor 22, a driving synchronous belt pulley 23 installed on the output shaft of the servo motor, a driven synchronous belt pulley 24 installed above the driving synchronous belt pulley 23, and a synchronous belt 25 wound around the driving synchronous belt pulley 22 and the driven synchronous belt pulley 23; the lifting support foot 28 is formed by connecting two inverted L-shaped plates up and down, and the lower end of the lifting support foot 28 is fixed on the slider 27.

[0035] The plugging plate mechanism includes a plugging plate cylinder 41 horizontally installed on the bottom surface of the longitudinal pushing platform 15 and a stacking plugging plate 42 connected to the piston rod of the plugging plate cylinder 41 and at the same height as the longitudinal pushing platform 15.

[0036] The side pushing mechanism includes a side pushing cylinder 51 horizontally installed at the rear of the top frame 13 and a side pushing plate 52 installed on the piston rod of the side pushing cylinder 51 and parallelly located above the rear of the stack baffle 16. When the piston rod of the side pushing cylinder 51 retracts, the side pushing plate 52 is slightly located behind the stack baffle 16. When the piston rod of the side pushing cylinder 51 extends, the side pushing plate 52 moves forward and is located in front of the stack baffle 16.

[0037] The longitudinal pushing mechanism includes a longitudinal pushing cylinder 61 installed in the middle of the tail end of the top frame 13 and a longitudinal pushing plate 62 installed on the piston rod of the longitudinal pushing cylinder 61.

[0038] The jacking mechanism includes a base 30, an adjusting seat 31, a cylinder base plate 32, a jacking cylinder 33, a jacking rod 34, a stacking separation top wheel 35, a jacking rod guide rail 36, two jacking rod rollers 37 and a roller pressing mechanism.

[0039] The base 30 includes a base plate 30a fixed to one side of the jacking bracket 14 close to the cigarette pack stacking and conveying device 100 and a base plate 30b vertically connected to the top surface of the base plate 30a and in the shape of a right triangle. A circular through hole and a waist-shaped through hole are respectively formed in the upper and lower parts of the surface of the base plate 30b in a one-to-one correspondence.

[0040] The adjusting seat 31 includes a top plate 31a and a connecting plate 31b vertically connected to the bottom surface of the top plate 31a. Two threaded holes corresponding to the circular through hole and the waist-shaped through hole on the base plate 30b and a connecting threaded hole are formed on the surface of the connecting plate 31b. The adjusting seat 31 is installed on the base 30 through a shouldered screw 311 installed in the circular through hole on the base plate 30b and the threaded hole on the adjusting seat 31 and a fastening screw 312 installed in the waist-shaped through hole on the base plate 30b and the connecting threaded hole on the adjusting seat 31.

[0041] The cylinder base plate 32 is installed on the top surface of the top plate 31a of the adjusting seat 31, and a hinge seat 320 is fixed to the rear part of the cylinder base plate 32.

[0042] The rear end (opposite to the extending direction of the piston rod of the jacking cylinder) of the jacking cylinder 33 is hinged to the hinge seat 320 on the cylinder base plate 32.

[0043] The jacking rod 34 is in the shape of a rectangular block, and a threaded hole is formed on the rear end surface. A stud 330 fixedly connected to the end of the piston rod of the jacking cylinder 33 is connected in the threaded hole. A waist-shaped slot hole in the length direction is formed in the middle of the top surface of the jacking rod 34, and a shaft hole is coaxially formed on each of the two side surfaces in the middle of the jacking rod 34.

[0044] The stacking separation top wheel 35 is installed at the front end of the jacking rod 34.

[0045] The cross section of the jacking rod guide rail 36 is in the shape of a U. Two mounting holes are formed in the bottom plate of the jacking rod guide rail 35 along the length direction and the jacking rod guide rail 36 is installed at the front part of the cylinder base plate 32 through two screws 361. The distance between the inner side surfaces of the two side plates 360 of the jacking rod guide rail 36 is adapted to the width of the jacking rod 34. The height of the two side plates 360 of the jacking rod guide rail 36 increases in a curved shape from the rear to the front, so that the top surfaces of the two side plates 360 are in an arc-shaped curved surface.

[0046] Two ejector rollers 37 are installed at both ends of a roller shaft 370 inserted into the shaft hole of the ejector rod 24, so that the two ejector rollers 37 are respectively located on the top surfaces of the two side plates 360 of the ejector rod guide 36, and the ejector rod 34 moves back and forth along the top surfaces of the two side plates 360 of the ejector rod guide 36 through the two ejector rollers 37 under the push of the piston rod of the ejecting cylinder 33.

[0047] The roller pressing mechanism includes a pressing wheel 38A, a spring seat 38B, a spring 38C and a pressing plate 38D; wherein, the pressing wheel 38A is installed in the middle of the roller shaft 370 and located in the kidney-shaped slot hole of the ejector rod 34. The outer diameter of the pressing wheel 38A is larger than the outer diameter of the ejector roller 37, so that the pressing wheel 38A is suspended on the roller shaft 370 and will not touch the bottom plate of the ejector rod guide 36; the cross-section of the spring seat 38B is inverted U-shaped. A spring groove is opened at the front center of the lower end surface of the top plate of the spring seat 38B, and two pressing plate slots symmetrically centered on the center of the spring groove are opened at the rear of the lower end surface of the top plate of the spring seat 38B. The distance between the inner side surfaces of the two side plates of the spring seat 38B is adapted to the width of the ejector rod guide 36, so that the two side plates of the spring seat 38B are stuck on the outer side surfaces of the ejector rod guide 36 and fixed on the ejector rod guide 36 by bolts 380; the upper part of the spring 38C is installed in the spring groove of the spring seat 38B; the pressing plate 38D includes a pressing plate body and a connecting part 382 with an inverted U-shaped cross-section connected to the rear end of the pressing plate body 381. A pin shaft hole is coaxially opened on the two side walls of the connecting part 382. The pressing plate body 381 of the pressing plate 38D extends between the lower end of the spring 38C and the top of the pressing wheel 38A. The two side walls of the connecting part 382 of the pressing plate 38D are respectively inserted into the two pressing plate slots of the spring seat 38B and installed on the spring seat 38B through a pin shaft 383.

[0048] Please refer to Figures 9a to 9c , the stacking device of the feeding system of the cigarette case inspection machine of the present invention has the following specific operation process:

[0049] The cigarette box cardboard coming out of the die-cutting machine is palletized by the stacker into a stack 600 of cigarette box cardboard with a set height, and is neatly and gaplessly stacked on the long conveyor belt 101. Start the long conveyor belt 101 to run. When the first stack 600 of cigarette box cardboard reaches the output end of the long conveyor belt 101, it is detected by the input sensor. Due to the speed difference between the long conveyor belt 101 and the short conveyor belt 102, a gap is opened between two adjacent stacks 600 of cigarette box cardboard when passing between the long conveyor belt 101 and the short conveyor belt 102. So after the foremost stack 600 of cigarette box cardboard is conveyed into the short conveyor belt 102, the long conveyor belt 101 stops running. All the stacks 600 of cigarette box cardboard behind this stack 600 of cigarette box cardboard stay on the long conveyor belt 101, while the short conveyor belt 102 continues to run until this stack 600 of cigarette box cardboard is conveyed to the in-place baffle 11, where it is detected by the in-place sensor, and the short conveyor belt 102 is controlled to stop running, that is, the task of conveying the stack 600 of cigarette box cardboard to the stacking device is completed. Then the stacking device performs a stacking operation on this stack 600 of cigarette box cardboard. After this stack 600 of cigarette box cardboard is stacked by the stacking device, the long conveyor belt 101 and the short conveyor belt 102 convey the next stack 600 of cigarette box cardboard in front of the in-place baffle 11, and the operation is repeated like this.

[0050] Before the stack 600 of cigarette box cardboard touches the in-place baffle 11, the lifting support feet 28 of the lifting mechanism are located at the lower limit of the support foot guide rail 21, and the top surface of the lifting support feet 28 is lower than the short conveyor belt 102. When the stack 600 of cigarette box cardboard touches the in-place baffle 11, the lifting support feet 28 rise from the lower limit of the support foot guide rail 21 and lift a stack 600 of cigarette box cardboard on the short conveyor belt 101 that stops in front of the in-place baffle 11. When the top of the stack 600 of cigarette box cardboard is detected by the stack top sensor, the lifting support feet 28 stop rising. At this time, the stack 600 of cigarette box cardboard is clamped between the stack blocking frame 16 and the in-place baffle 11, and the piston rod of the top opening cylinder 33 extends and drives the ejector rod 34 and the stacking top wheel 35 to obliquely push forward towards the side of the stack 600 of cigarette box cardboard (see Figure 9a ). During the forward movement of the ejector rod 34, the two ejector rod rollers 35 installed at both ends of the roller shaft 370 respectively advance along the top surface tracks of the two side plates 360 of the ejector rod guide rail 36. Since the top surfaces of the two side plates 360 of the ejector rod guide rail 36 are arc-shaped curved surfaces designed according to the arc-shaped curve movement track when the side of the cigarette box is pushed open, and the other side of the stack 600 of cigarette box cardboard leans against the stack blocking frame 16, so that the stacking top wheel 35 can very smoothly lift several cigarette box cardboards at the upper part of one side of the stack 600 of cigarette box cardboard and lift the several cigarette box cardboards by a certain angle, and a relatively large gap appears between the lifted several cigarette box cardboards and the stack 600 of cigarette box cardboard below (see Figure 9b ). At this time, the inserting plate cylinder 41 drives the stacking inserting plate 42 to horizontally insert into this gap and hold the lifted several cigarette box cardboards, that is, the cigarette box cardboard stack 600a is split out (see Figure 9c) After the piston rod of the jacking cylinder 33 retracts, the side-pushing cylinder 51 drives the side-pushing plate 52 to horizontally push the stack of cigarette box cardboard 600a supported by the separating and stacking insert plate 42 on the other side of the stack of cigarette box cardboard 600a forward (in the conveying direction of the short conveyor belt 102) onto the longitudinal pushing platform 15. Then, the longitudinal pushing cylinder 61 drives the longitudinal pushing plate 62 to push the stack of cigarette box cardboard 600a along the longitudinal pushing platform 15 (perpendicular to the conveying direction of the short conveyor belt 102) to the corner folding station. After that, the lifting support feet 28 of the lifting mechanism rise by a certain height again until the top of the stack of cigarette box cardboard stack 600 is detected by the stack top sensor, then the lifting support feet 28 stop rising, and the jacking mechanism, the inserting plate mechanism, the side-pushing mechanism, and the longitudinal pushing mechanism work in sequence again, and this operation is repeated.

[0051] When the two ejector rod rollers 35 advance along the arc-shaped surfaces on the top surfaces of the two side plates 360 of the ejector rod guide 36, due to the action of the spring 28C of the roller pressing mechanism, the pressing plate 38D swings with the pin shaft 383 as the rotation center, but the pressing plate body 381 always presses on the top surface of the pressing wheel 38A, so that the ejector rod rollers 35 at both ends of the roller shaft 370 always contact the arc-shaped surface of the ejector rod guide 36, thus ensuring that the ejector rod rollers 35 reach the side of the stack of cigarette box cardboard 600 with the arc-shaped surface of the ejector rod guide 36 as the movement track.

[0052] Since there are many varieties of cigarette boxes, for cigarette boxes of different widths, the trajectories when the cigarette box cardboard is jacked open are also different, and the adjustment seat 31 is required to make adjustments. Since a kidney-shaped through hole is provided on the base 30, when the fastening screw 312 is loosened, the adjustment seat 31 can rotate a certain angle around the shoulder screw 311 according to the cigarette box cardboard of different widths, so as to change the movement track of the ejector rod roller 35. Then, the fastening screw 312 is tightened, and the ejector rod mechanism can achieve the effect of smoothly jacking open the side of the cigarette box cardboard.

[0053] 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 belong to the scope of the present invention and should be defined by each claim.

Claims

1. A stacking and separating device for a feeding system of a cigarette case inspection machine is arranged in a stacking and separating station at the output end of a cigarette case stacking and conveying device and includes a lifting mechanism, a jacking mechanism, a plug plate mechanism, a side pushing mechanism, and a longitudinal pushing mechanism; in the stacking and separating station, there are a positioning baffle near the output end of the cigarette case stacking and conveying device, a station baffle far from the output end of the cigarette case stacking and conveying device and parallel to the positioning baffle, a top frame vertically connected to the top of the station baffle, a jacking support bridging between the upper middle part of the positioning baffle and the upper middle part of the station baffle, a longitudinal pushing platform bridging between the upper part of the positioning baffle and the upper part of the station baffle, and a stack baffle vertically connected to the rear of the top frame and parallelly located above the rear of the positioning baffle; the lifting mechanism includes a lifting driving mechanism installed at the lower part of the positioning baffle and a lifting support foot connected to the lifting driving mechanism; the jacking mechanism includes a jacking cylinder and a stacking and separating jacking wheel installed on the piston rod of the jacking cylinder through a jacking rod; the plug plate mechanism includes a plug plate cylinder horizontally installed on the bottom surface of the longitudinal pushing platform and a stacking and separating plug plate connected to the piston rod of the plug plate cylinder and at the same height as the longitudinal pushing platform; the side pushing mechanism includes a side pushing cylinder horizontally installed at the rear of the top frame and a side pushing plate installed on the piston rod of the side pushing cylinder and parallelly located above the rear of the stack baffle; the longitudinal pushing mechanism includes a longitudinal pushing cylinder installed at the middle of the tail end of the top frame and a longitudinal pushing plate installed on the piston rod of the longitudinal pushing cylinder; it is characterized in that, the jacking mechanism further includes a base, a jacking rod guide rail, two jacking rod rollers, and a roller pressing mechanism; the base is a right triangle and is fixed to the side of the jacking support near the cigarette case stacking and conveying device; the jacking cylinder is installed on the inclined top surface of the base through a cylinder bottom plate; the jacking rod is a rectangular block and has a threaded hole opened on the rear end surface, and a stud fixedly connected to the end of the piston rod of the jacking cylinder is connected in the threaded hole. A waist-shaped slot hole in the length direction is opened in the middle of the top surface of the jacking rod, and a shaft hole is coaxially opened on each of the two side surfaces in the middle of the jacking rod; the cross section of the jacking rod guide rail is U-shaped. The bottom of the jacking rod guide rail is installed at the front part of the cylinder bottom plate through screws. The distance between the inner side surfaces of the two side plates of the jacking rod guide rail is adapted to the width of the jacking rod. The height of the two side plates of the jacking rod guide rail increases in a curve shape from the rear to the front, so that the top surfaces of the two side plates are arc-shaped curved surfaces; two jacking rod rollers are installed at both ends of a roller shaft passing through the shaft holes of the jacking rod, so that the two jacking rod rollers are respectively located on the top surfaces of the two side plates of the jacking rod guide rail; The roller pressing mechanism includes a pressing wheel, a spring seat, a spring and a pressing plate; the outer diameter of the pressing wheel is larger than that of the ejector rod roller and is installed in the middle of the roller shaft and located in the waist-shaped slot of the ejector rod; the cross-section of the spring seat is in an inverted U shape, a spring groove is opened at the front center of the lower end surface of the top plate of the spring seat, and two pressing plate slots symmetrically centered on the center of the spring groove are opened at the rear of the lower end surface of the top plate of the spring seat. The distance between the inner side surfaces of the two side plates of the spring seat is adapted to the width of the ejector rod guide rail, so that the two side plates of the spring seat are stuck on the outer side surface of the ejector rod guide rail and fixed on the ejector rod guide rail by bolts; the upper part of the spring is installed in the spring groove of the spring seat; the pressing plate includes a pressing plate body and a connecting part with a U-shaped cross-section connected to the rear end of the pressing plate body. A pin shaft hole is coaxially opened on the two side walls of the connecting part. The pressing plate body of the pressing plate extends between the lower end of the spring and the top of the pressing wheel, and the two side walls of the connecting part of the pressing plate are respectively inserted into the two pressing plate slots of the spring seat and installed on the spring seat through a pin shaft.

2. The stacking device of the feeding system of the cigarette case inspection machine according to claim 1, characterized in that An adjusting seat is further arranged between the base and the cylinder base plate; the base includes a base plate and a base plate vertically connected to the top surface of the base plate and in a right-angled triangle shape. A circular through hole and a waist-shaped through hole are respectively opened in the upper and lower parts of the surface of the base plate; the adjusting seat includes a top plate and a connecting plate vertically connected to the bottom surface of the top plate. Two threaded holes and connecting threaded holes corresponding to the circular through hole and the waist-shaped through hole on the base plate are opened on the surface of the connecting plate, so that the adjusting seat is installed on the base through a shoulder screw and a fastening screw.

3. The stacking and separating device of the feeding system of the cigarette case inspection machine according to claim 1, characterized in that, The lifting support feet are connected by two inverted L-shaped plates, one on top of the other; the lifting drive mechanism includes a support foot guide rail fixed in the vertical direction near the in-place baffle, a synchronous belt mechanism installed beside the support foot guide rail, and a slider fixed on the synchronous belt of the synchronous belt mechanism and installed on the support foot guide rail; the synchronous belt mechanism includes a servo motor, a driving synchronous belt wheel installed on the output shaft of the servo motor, a driven synchronous belt wheel installed above the driving synchronous belt wheel, and a synchronous belt wound between the driving synchronous belt wheel and the driven synchronous belt wheel; the lower end of the lifting support foot is fixed on the slider.

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