A vertical falling cigarette buffer and flow limiting device

Abstract

This utility model discloses a vertically falling cigarette pack buffer and flow-limiting device, comprising a left flow-limiting plate, a right flow-limiting plate, an upper left buffer block, an upper right buffer block, an upper left buffer spring assembly, an upper right buffer spring assembly, a lower left buffer block, a lower right buffer block, a lower left buffer spring assembly, a lower right buffer spring assembly, a left buffer cylinder assembly, and a right buffer cylinder assembly. This utility model effectively reduces the falling speed of the cigarette packs within the descent channel through two-stage buffer deceleration, preventing damage to the outer packaging due to excessive falling speed. Simultaneously, this utility model serves to limit the flow.

Description

Technical Field

[0001] This utility model relates to the technical field of cigarette production equipment, and in particular to a buffer and flow-limiting device for vertical falling of cigarette packs. Background Technology

[0002] The cigarette cartons produced by the cigarette rolling machine need to be conveyed to the sealing machine for packaging. Due to factory design and area constraints, the cigarette rolling machine and the sealing machine are located on different floors. The current practice is to manually transport the cigarette cartons from the machine to the sealing machine, and then manually place them into the sealing machine for packaging. This method suffers from low production efficiency and high labor intensity. Another method involves using a chuting channel to convey the cigarette cartons from the machine to the sealing machine; however, existing chuting channels lack buffering and flow-limiting functions, which can easily cause damage to the cigarette cartons during their descent.

[0003] Therefore, through beneficial exploration and research, the applicant has found a solution to the above problems, and the technical solution to be introduced below is the result of this research. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a buffer and flow limiting device for vertical falling cigarette packs, which addresses the shortcomings of the existing technology.

[0005] The technical problem to be solved by this utility model can be achieved by the following technical solution: A vertically falling cigarette pack buffer and flow-limiting device includes: A left flow limiting plate and a right flow limiting plate are provided. The upper ends of the left flow limiting plate and the right flow limiting plate are rotatably mounted on the lower frame of the descending channel via a left rotation shaft and a right rotation shaft, and are arranged symmetrically at intervals. A left buffer groove is provided on the inner side of the left flow limiting plate, and a right buffer groove is provided on the inner side of the right flow limiting plate. The upper left buffer block and the upper right buffer block are installed in the left buffer groove and the right buffer groove by means of the upper left rotating pin and the upper right rotating pin, respectively. Upper left buffer spring assembly and upper right buffer spring assembly are mounted on the left flow limiting plate and the right flow limiting plate and connected to the lower ends of the upper left buffer block and the upper right buffer block, respectively, for pushing the lower ends of the upper left buffer block and the upper right buffer block out of the left buffer groove and the right buffer groove. The lower left buffer block and the lower right buffer block are installed at their upper ends in the left buffer groove and the right buffer groove via the lower left rotating pin and the lower right rotating pin, respectively, and are located below the upper left buffer block and the upper right buffer block. A lower left buffer spring assembly and a lower right buffer spring assembly are mounted on the left and right flow limiting plates and connected to the lower ends of the lower left and lower right buffer blocks, respectively, for pushing the lower ends of the lower left and lower right buffer blocks out of the left and right buffer grooves, respectively; and A left buffer cylinder assembly and a right buffer cylinder assembly, the output ends of which are connected to the lower ends of the left flow limiting plate and the right flow limiting plate.

[0006] In a preferred embodiment of this utility model, the upper left buffer spring assembly includes an upper left cylindrical buffer seat, an upper left cylindrical threaded sleeve, an upper left adjusting screw, an upper left adjusting nut, an upper left buffer spring, and an upper left sealing cover. The upper left cylindrical buffer seat is fixedly installed on the outer surface of the left flow limiting plate. The upper left cylindrical threaded sleeve is screwed onto the upper left cylindrical buffer seat. The upper left adjusting screw is disposed inside the upper left cylindrical buffer seat, with one end passing through the left flow limiting plate and fixed to the lower end of the upper left buffer block, and the other end passing through the upper left cylindrical threaded sleeve and extending outward. The upper left adjusting nut is screwed onto the other end of the upper left adjusting screw and its size is larger than the diameter of the upper left cylindrical threaded sleeve. The upper left buffer spring is fitted on the outer periphery of the upper left adjusting screw and is located between the upper left cylindrical threaded sleeve and the left flow limiting plate. The upper left sealing cover is disposed on the upper left cylindrical buffer seat and surrounds the upper left cylindrical buffer seat, the upper left cylindrical threaded sleeve, and the upper left adjusting nut.

[0007] In a preferred embodiment of this utility model, the upper right buffer spring assembly includes an upper right cylindrical buffer seat, an upper right cylindrical threaded sleeve, an upper right adjusting screw, an upper right adjusting nut, an upper right buffer spring, and an upper right sealing cover. The upper right cylindrical buffer seat is fixedly installed on the outer surface of the right flow limiting plate. The upper right cylindrical threaded sleeve is screwed onto the upper right cylindrical buffer seat. The upper right adjusting screw is disposed inside the upper right cylindrical buffer seat, with one end passing through the right flow limiting plate and fixedly connected to the lower end of the upper right buffer block, and the other end passing through the upper right cylindrical threaded sleeve and extending outward. The upper right adjusting nut is screwed onto the other end of the upper right adjusting screw and its size is larger than the diameter of the upper right cylindrical threaded sleeve. The upper right buffer spring is fitted on the outer periphery of the upper right adjusting screw and is located between the upper right cylindrical threaded sleeve and the right flow limiting plate. The upper right sealing cover is disposed on the upper right cylindrical buffer seat and surrounds the upper right cylindrical buffer seat, the upper right cylindrical threaded sleeve, and the upper right adjusting nut.

[0008] In a preferred embodiment of this utility model, the lower left buffer spring assembly includes a lower left cylindrical buffer seat, a lower left cylindrical threaded sleeve, a lower left adjusting screw, a lower left adjusting nut, a lower left buffer spring, and a lower left sealing cover. The lower left cylindrical buffer seat is fixedly installed on the outer surface of the left flow-limiting plate. The lower left cylindrical threaded sleeve is screwed onto the lower left cylindrical buffer seat. The lower left adjusting screw is disposed inside the lower left cylindrical buffer seat, with one end passing through the left flow-limiting plate and fixedly connected to the lower end of the lower left buffer block, and the other end passing through the lower left cylindrical threaded sleeve and extending outward. The lower left adjusting nut is screwed onto the other end of the lower left adjusting screw and its size is larger than the diameter of the lower left cylindrical threaded sleeve. The lower left buffer spring is fitted on the outer periphery of the lower left adjusting screw and is located between the lower left cylindrical threaded sleeve and the left flow-limiting plate. The lower left sealing cover is disposed on the lower left cylindrical buffer seat and surrounds the lower left cylindrical buffer seat, the lower left cylindrical threaded sleeve, and the lower left adjusting nut.

[0009] In a preferred embodiment of this utility model, the lower right buffer spring assembly includes a lower right cylindrical buffer seat, a lower right cylindrical threaded sleeve, a lower right adjusting screw, a lower right adjusting nut, a lower right buffer spring, and a lower right sealing cover. The lower right cylindrical buffer seat is fixedly installed on the outer surface of the right flow limiting plate. The lower right cylindrical threaded sleeve is screwed onto the lower right cylindrical buffer seat. The lower right adjusting screw is disposed inside the lower right cylindrical buffer seat, with one end passing through the right flow limiting plate and fixedly connected to the lower end of the lower right buffer block, and the other end passing through the lower right cylindrical threaded sleeve and extending outward. The lower right adjusting nut is screwed onto the other end of the lower right adjusting screw and its size is larger than the diameter of the lower right cylindrical threaded sleeve. The lower right buffer spring is fitted on the outer periphery of the lower right adjusting screw and is located between the lower right cylindrical threaded sleeve and the right flow limiting plate. The lower right sealing cover is disposed on the lower right cylindrical buffer seat and surrounds the lower right cylindrical buffer seat, the lower right cylindrical threaded sleeve, and the lower right adjusting nut.

[0010] In a preferred embodiment of this utility model, the left buffer cylinder assembly includes a left buffer cylinder mounting base, a left buffer cylinder, a left push rod, a left cylindrical buffer seat, and a left buffer spring. The bottom of the left buffer cylinder is mounted on the left buffer cylinder mounting base, and its output end is rotatably connected to one end of the left push rod. The left cylindrical buffer seat is disposed on the outer side of the lower end of the left flow restrictor. The other end of the left push rod extends into the left cylindrical buffer seat. The left buffer spring is disposed in the left cylindrical buffer seat and located between the left push rod and the left flow restrictor.

[0011] In a preferred embodiment of this utility model, the right buffer cylinder assembly includes a right buffer cylinder mounting base, a right buffer cylinder, a right push rod, a right cylindrical buffer seat, and a right buffer spring. The bottom of the right buffer cylinder is mounted on the right buffer cylinder mounting base, and its output end is rotatably connected to one end of the right push rod. The right cylindrical buffer seat is disposed on the outer surface of the lower end of the right flow restrictor. The other end of the right push rod extends into the right cylindrical buffer seat. The right buffer spring is disposed in the right cylindrical buffer seat and located between the right push rod and the right flow restrictor.

[0012] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: This utility model effectively reduces the falling speed of the cigarette packs in the descent channel through two-stage buffer deceleration, avoiding the problem of damage to the outer packaging caused by excessive falling speed. At the same time, this utility model also serves to limit the flow. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural schematic diagram of this utility model from one perspective.

[0015] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of this utility model.

[0016] Figure 3 yes Figure 2 Enlarged diagram of point A.

[0017] Figure 4 This is a three-dimensional structural schematic diagram of the vertical falling buffer and flow limiting device for cigarette packs of this utility model.

[0018] Figure 5 This is the front view of the vertical falling buffer and flow limiting device for cigarettes according to this utility model.

[0019] Figure 6 This is a longitudinal sectional view of the vertical falling buffer and flow limiting device for cigarettes according to this utility model. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0021] The vertical falling buffer and flow-limiting device for cigarette packs of this invention is installed at the lower part of the airtight buffer descent channel device. Specifically, see... Figure 1 and Figure 2 The figure shows an airtight buffer descent channel device, including a descent channel 100, a vertical falling cigarette buffer and flow limiting device 200, a flap mechanism 300, a counter (not shown in the figure), and a PLC controller (not shown in the figure).

[0022] The descending channel 100 is vertically arranged, with its upper end connected to the outlet of the cigarette rolling machine and its lower end connected to the inlet of the packaging machine. It receives the cigarette packs from the cigarette rolling machine and transports them to the packaging machine. The cross-section of the descending channel 100 is slightly larger than the cross-section of the cigarette packs when laid flat, with gaps between them maintained between 2mm and 3mm to ensure the cigarette packs can fall through the descending channel 100. Several supporting beams 110 are vertically spaced on the outer circumference of the descending channel 100, which support the descending channel 100 to be installed on the wall of the factory building. A maintenance and debugging door 120 is provided above the vertical falling buffer and flow-limiting device 200 on the descending channel 100, facilitating maintenance and debugging of the device's internal components by personnel.

[0023] See Figures 4 to 6 and combined Figure 1 and Figure 2 A vertically falling cigarette buffer and flow limiting device 200 is installed within the descending channel 100 and located at the lower end of the descending channel 100. The vertically falling cigarette buffer and flow limiting device 200 includes a left flow limiting plate 210a, a right flow limiting plate 210b, an upper left buffer block 220a, an upper right buffer block 220b, an upper left buffer spring assembly 230a, an upper right buffer spring assembly 230b, a lower left buffer block 240a, a lower right buffer block 240b, a lower left buffer spring assembly 250a, a lower right buffer spring assembly 250b, a left buffer cylinder assembly 260a, and a right buffer cylinder assembly 260b.

[0024] The upper ends of the left flow limiting plate 210a and the right flow limiting plate 210b are rotatably mounted on the lower frame of the descending channel 100 via the left rotation shaft 211a and the right rotation shaft 211b, and are arranged symmetrically at intervals. A left buffer groove 212a is provided on the inner side of the left flow limiting plate 210a, and a right buffer groove 212b is provided on the inner side of the right flow limiting plate 210b.

[0025] The upper ends of the upper left buffer block 220a and the upper right buffer block 220b are installed in the left buffer groove 212a and the right buffer groove 212b via the upper left rotating pin 221a and the upper right rotating pin 221b, respectively, and can swing along the upper left rotating pin 221a and the upper right rotating pin 221b in the left buffer groove 212a and the right buffer groove 212b.

[0026] The upper left buffer spring assembly 230a and the upper right buffer spring assembly 230b are installed on the left flow limiting plate 210a and the right flow limiting plate 210b and are connected to the lower ends of the upper left buffer block 220a and the upper right buffer block 220b, respectively, to push the lower ends of the upper left buffer block 220a and the upper right buffer block 220b out of the left buffer groove 212a and the right buffer groove 212b.

[0027] Specifically, the upper left buffer spring assembly 230a includes an upper left cylindrical buffer seat 231a, an upper left cylindrical threaded sleeve 232a, an upper left adjusting screw 233a, an upper left adjusting nut 234a, an upper left buffer spring 235a, and an upper left sealing cover 236a. The upper left cylindrical buffer seat 231a is fixedly installed on the outer surface of the left flow-limiting plate 210a. The upper left cylindrical threaded sleeve 232a is threaded onto the upper left cylindrical buffer seat 231a. The upper left adjusting screw 233a is disposed inside the upper left cylindrical buffer seat 231a, with one end passing through the left flow-limiting plate 210a and fixed to the lower end of the upper left buffer block 220a, and the other end passing through the upper left cylindrical threaded sleeve 232a and extending outwards. The upper left adjusting nut 234a... An upper left buffer spring 235a is screwed onto the other end of the upper left adjusting screw 233a and its size is larger than the diameter of the upper left cylindrical sleeve 232a. The upper left buffer spring 235a is fitted onto the outer periphery of the upper left adjusting screw 233a and is located between the upper left cylindrical sleeve 232a and the left flow restrictor 210a. An upper left sealing cover 236a is disposed on the upper left cylindrical buffer seat 231a and surrounds the upper left cylindrical buffer seat 231a, the upper left cylindrical sleeve 232a, and the upper left adjusting nut 234a. The upper left buffer spring assembly 230a can adjust the tightness of the upper left buffer spring 235a by adjusting the upper left cylindrical sleeve 232a, and can also adjust the swing stroke of the upper left buffer block 220a by adjusting the upper left adjusting nut 234a and the upper left adjusting screw 233a.

[0028] Similarly, the upper right buffer spring assembly 230b includes an upper right cylindrical buffer seat 231b, an upper right cylindrical threaded sleeve 232b, an upper right adjusting screw 233b, an upper right adjusting nut 234b, an upper right buffer spring 235b, and an upper right sealing cover 236b. The upper right cylindrical buffer seat 231b is fixedly installed on the outer surface of the right flow restrictor 210b. The upper right cylindrical threaded sleeve 232b is threaded onto the upper right cylindrical buffer seat 231b. The upper right adjusting screw 233b is disposed inside the upper right cylindrical buffer seat 231b, with one end passing through the right flow restrictor 210b and fixed to the lower end of the upper right buffer block 220b, and the other end passing through the upper right cylindrical threaded sleeve 232b and extending outwards. The upper right adjusting nut 234b... The upper right buffer spring 235b is screwed onto the other end of the upper right adjusting screw 233b and its size is larger than the diameter of the upper right cylindrical sleeve 232b. It is fitted onto the outer periphery of the upper right adjusting screw 233b and located between the upper right cylindrical sleeve 232b and the right flow restrictor 210b. The upper right sealing cover 236b is mounted on the upper right cylindrical buffer seat 231b and surrounds the upper right cylindrical buffer seat 231b, the upper right cylindrical sleeve 232b, and the upper right adjusting nut 234b. The upper right buffer spring assembly 230b can adjust the tightness of the upper right buffer spring 235b by adjusting the upper right cylindrical sleeve 232b, and can also adjust the swing stroke of the upper right buffer block 220b by adjusting the upper right adjusting nut 234b and the upper right adjusting screw 233b.

[0029] The upper ends of the lower left buffer block 240a and the lower right buffer block 240b are installed in the left buffer groove 212a and the right buffer groove 212b via the lower left rotating pin 241a and the lower right rotating pin 241b, and are located below the upper left buffer block 220a and the upper right buffer block 220b. They can swing along the lower left rotating pin 241a and the lower right rotating pin 241b in the left buffer groove 212a and the right buffer groove 212b.

[0030] The lower left buffer spring assembly 250a and the lower right buffer spring assembly 250b are mounted on the left flow limiting plate 210a and the right flow limiting plate 210b and are connected to the lower ends of the lower left buffer block 240a and the lower right buffer block 240b, respectively, to push the lower ends of the lower left buffer block 240a and the lower right buffer block 240b out of the left buffer groove 212a and the right buffer groove 212b.

[0031] Specifically, the lower left buffer spring assembly 250a includes a lower left cylindrical buffer seat 251a, a lower left cylindrical threaded sleeve 252a, a lower left adjusting screw 253a, a lower left adjusting nut 254a, a lower left buffer spring 255a, and a lower left sealing cover 256a. The lower left cylindrical buffer seat 251a is fixedly installed on the outer surface of the left flow-limiting plate 210a. The lower left cylindrical threaded sleeve 252a is threaded onto the lower left cylindrical buffer seat 251a. The lower left adjusting screw 253a is disposed inside the lower left cylindrical buffer seat 251a, with one end passing through the left flow-limiting plate 210a and fixed to the lower end of the lower left buffer block 240a, and the other end passing through the lower left cylindrical threaded sleeve 252a and extending outwards. The lower left adjusting nut 254a... A lower left buffer spring 255a is screwed onto the other end of the lower left adjusting screw 253a, and its size is larger than the diameter of the lower left cylindrical sleeve 252a. The lower left buffer spring 255a is fitted onto the outer periphery of the lower left adjusting screw 253a and is located between the lower left cylindrical sleeve 252a and the left flow restrictor 210a. A lower left sealing cover 256a is disposed on the lower left cylindrical buffer seat 251a and surrounds the lower left cylindrical buffer seat 251a, the lower left cylindrical sleeve 252a, and the lower left adjusting nut 254a. The lower left buffer spring assembly 250a can adjust the tightness of the lower left buffer spring 255a by adjusting the lower left cylindrical sleeve 252a, and can also adjust the swing stroke of the lower left buffer block 240a by adjusting the lower left adjusting nut 254a and the lower left adjusting screw 253a.

[0032] Similarly, the lower right buffer spring assembly 250b includes a lower right cylindrical buffer seat 251b, a lower right cylindrical threaded sleeve 252b, a lower right adjusting screw 253b, a lower right adjusting nut 254b, a lower right buffer spring 255b, and a lower right sealing cover 256b. The lower right cylindrical buffer seat 251b is fixedly installed on the outer surface of the right flow restrictor 210b. The lower right cylindrical threaded sleeve 252b is threaded onto the lower right cylindrical buffer seat 251b. The lower right adjusting screw 253b is disposed inside the lower right cylindrical buffer seat 251b, with one end passing through the right flow restrictor 210b and fixed to the lower end of the lower right buffer block 240b, and the other end passing through the lower right cylindrical threaded sleeve 252b and extending outwards. The lower right adjusting nut 254b... A lower right buffer spring 255b is screwed onto the other end of the lower right adjusting screw 253b, and its size is larger than the diameter of the lower right cylindrical threaded sleeve 252b. The lower right buffer spring 255b is fitted onto the outer periphery of the lower right adjusting screw 253b and is located between the lower right cylindrical threaded sleeve 252b and the right flow restrictor 210b. A lower right sealing cover 256b is disposed on the lower right cylindrical buffer seat 251b and surrounds the lower right cylindrical buffer seat 251b, the lower right cylindrical threaded sleeve 252b, and the lower right adjusting nut 254b. The lower right buffer spring assembly 250b can adjust the tightness of the lower right buffer spring 255b by adjusting the lower right cylindrical threaded sleeve 252b, and can also adjust the swing stroke of the lower right buffer block 240b by adjusting the lower right adjusting nut 254b and the lower right adjusting screw 253b.

[0033] The output ends of the left buffer cylinder assembly 260a and the right buffer cylinder assembly 260b are connected to the lower ends of the left current limiting plate 210a and the right current limiting plate 210b, respectively, and are connected to the PLC controller.

[0034] Specifically, the left buffer cylinder assembly 260a includes a left buffer cylinder mounting base 261a, a left buffer cylinder 262a, a left push rod 263a, a left cylindrical buffer seat 264a, and a left buffer spring 265a. The left buffer cylinder 262a is connected to the PLC controller, and its bottom is mounted on the left buffer cylinder mounting base 261a. Its output end is rotatably connected to one end of the left push rod 263a via a pin. The left cylindrical buffer seat 264a is located on the outer surface of the lower end of the left flow limiting plate 210a. The other end of the left push rod 263a extends into the left cylindrical buffer seat 264a. The left buffer spring 265a is located inside the left cylindrical buffer seat 264a and between the left push rod 263a and the left flow limiting plate 210a.

[0035] Similarly, the right buffer cylinder assembly 260b includes a right buffer cylinder mounting base 261b, a right buffer cylinder 262b, a right push rod 263b, a right cylindrical buffer seat 264b, and a right buffer spring 265b. The right buffer cylinder 262b is connected to the PLC controller, and its bottom is mounted on the right buffer cylinder mounting base 261b. Its output end is rotatably connected to one end of the right push rod 263b via a pin. The right cylindrical buffer seat 264b is located on the outer surface of the lower end of the right flow limiting plate 210b. The other end of the right push rod 263b extends into the right cylindrical buffer seat 264b. The right buffer spring 265b is located inside the right cylindrical buffer seat 264b and between the right push rod 263b and the right flow limiting plate 210b.

[0036] The buffering process of the vertically falling cigarette pack buffer and flow limiting device 200 is as follows: When the cigarette pack falls from the descent channel 100 into the vertical falling buffer and flow-limiting device 200, it first enters the upper part between the left flow-limiting plate 210a and the right flow-limiting plate 210b, and then falls between the upper left buffer block 220a and the upper right buffer block 220b. Under the elastic force of the upper left buffer spring assembly 230a and the upper right buffer spring assembly 230b, the cigarette pack is decelerated between the upper left buffer block 220a and the upper right buffer block 220b, which plays a first-level buffering role, and then falls to the lower left buffer block. Between the lower right buffer block 240a and the lower left buffer block 240b, under the elastic force of the lower left buffer spring assembly 250a and the lower right buffer spring assembly 250b, the cigarette packs are slowed down again between the lower left buffer block 240a and the lower right buffer block 240b, playing a secondary buffering role. At this time, the falling speed of the cigarette packs is significantly reduced, and they fall to the bottom between the left flow limit plate 210a and the right flow limit plate 210b, thus preventing the cigarette packs from falling directly to the bottom of the descent channel 100 and causing damage to the outer packaging. Subsequently, multiple cigarette packs are also buffered in the same way and stacked at the bottom between the left flow limit plate 210a and the right flow limit plate 210b. When multiple cigarette packs are stacked to a certain quantity, the left buffer cylinder assembly 260a and the right buffer cylinder assembly 260b are activated to pull the lower parts of the left flow limiting plate 210a and the right flow limiting plate 210b outward, so that the stacked cigarette packs fall from the lower port of the descending channel 100 into the packaging machine.

[0037] A flap mechanism 300 is installed at the lower end of the descending channel 100, and it is used to control the opening or closing of the lower port of the descending channel 100. See details... Figure 3 The flip-plate mechanism 300 includes a flip-plate 310, a tilting cylinder mounting base 320, and a flip-plate cylinder 330. The flip-plate 310 is mounted at the lower end of the descending channel 100 via a flip-plate rotation shaft 311, and is used to open or close the lower end of the descending channel 100. The tilting cylinder mounting base 320 is located on the outer surface of the lower end of the descending channel 100. The flip-plate cylinder 330 is connected to a PLC controller; its bottom is hinged to the tilting cylinder mounting base 320, and its output end is hinged to the flip-plate rotation shaft 311, used to drive the flip-plate rotation shaft 311 to rotate, thereby causing the flip-plate 310 to tilt.

[0038] A counter is installed within the descent channel 100 to count the falling cigarette packs. In this embodiment, the counter uses a photoelectric sensor.

[0039] The PLC controller is connected to the vertical falling cigarette buffer and flow limiting device 200, the flipping mechanism 300, and the counter, respectively, to control the coordinated operation of each mechanism.

[0040] The working process of the airtight buffer descent channel device of this utility model is as follows: Multiple cigarette packs produced by the cigarette rolling machine fall directly into the descent channel 100. After being buffered by the vertical falling cigarette buffer and current limiting device 200, the multiple cigarette packs are stacked together at the bottom of the vertical falling cigarette buffer and current limiting device 200. The counter counts the falling cigarette packs and sends the count result to the PLC controller. When the stacked cigarette packs reach a certain number, the PLC controller controls the vertical falling cigarette buffer and current limiting device 200 to operate and controls the flipping mechanism 300 to open the lower port of the descent channel 100, so that the stacked cigarette packs fall into the packaging machine for packaging.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vertical fall cushioning flow limiting device for cartons, characterized in that, include: A left flow limiting plate and a right flow limiting plate are provided. The upper ends of the left flow limiting plate and the right flow limiting plate are rotatably mounted on the lower frame of the descending channel via a left rotation shaft and a right rotation shaft, and are arranged symmetrically at intervals. A left buffer groove is provided on the inner side of the left flow limiting plate, and a right buffer groove is provided on the inner side of the right flow limiting plate. The upper left buffer block and the upper right buffer block are installed in the left buffer groove and the right buffer groove by means of the upper left rotating pin and the upper right rotating pin, respectively. Upper left buffer spring assembly and upper right buffer spring assembly are mounted on the left flow limiting plate and the right flow limiting plate and connected to the lower ends of the upper left buffer block and the upper right buffer block, respectively, for pushing the lower ends of the upper left buffer block and the upper right buffer block out of the left buffer groove and the right buffer groove. The lower left buffer block and the lower right buffer block are installed at their upper ends in the left buffer groove and the right buffer groove via the lower left rotating pin and the lower right rotating pin, respectively, and are located below the upper left buffer block and the upper right buffer block. A lower left buffer spring assembly and a lower right buffer spring assembly are mounted on the left and right flow limiting plates and connected to the lower ends of the lower left and lower right buffer blocks, respectively, for pushing the lower ends of the lower left and lower right buffer blocks out of the left and right buffer grooves, respectively; and A left buffer cylinder assembly and a right buffer cylinder assembly, the output ends of which are connected to the lower ends of the left flow limiting plate and the right flow limiting plate.

2. The vertical fall cushioning flow restriction device for cartons of cigarettes of claim 1, wherein, The upper left buffer spring assembly includes an upper left cylindrical buffer seat, an upper left cylindrical threaded sleeve, an upper left adjusting screw, an upper left adjusting nut, an upper left buffer spring, and an upper left sealing cover. The upper left cylindrical buffer seat is fixedly installed on the outer surface of the left flow-limiting plate. The upper left cylindrical threaded sleeve is screwed onto the upper left cylindrical buffer seat. The upper left adjusting screw is disposed inside the upper left cylindrical buffer seat, with one end passing through the left flow-limiting plate and fixed to the lower end of the upper left buffer block, and the other end passing through the upper left cylindrical threaded sleeve and extending outward. The upper left adjusting nut is screwed onto the other end of the upper left adjusting screw and its size is larger than the diameter of the upper left cylindrical threaded sleeve. The upper left buffer spring is fitted on the outer periphery of the upper left adjusting screw and is located between the upper left cylindrical threaded sleeve and the left flow-limiting plate. The upper left sealing cover is disposed on the upper left cylindrical buffer seat and surrounds the upper left cylindrical buffer seat, the upper left cylindrical threaded sleeve, and the upper left adjusting nut.

3. The vertical fall cushioning flow restriction device for cartons of cigarettes of claim 2, wherein, The upper right buffer spring assembly includes an upper right cylindrical buffer seat, an upper right cylindrical threaded sleeve, an upper right adjusting screw, an upper right adjusting nut, an upper right buffer spring, and an upper right sealing cover. The upper right cylindrical buffer seat is fixedly installed on the outer surface of the right flow limiting plate. The upper right cylindrical threaded sleeve is screwed onto the upper right cylindrical buffer seat. The upper right adjusting screw is disposed inside the upper right cylindrical buffer seat, with one end passing through the right flow limiting plate and fixed to the lower end of the upper right buffer block, and the other end passing through the upper right cylindrical threaded sleeve and extending outward. The upper right adjusting nut is screwed onto the other end of the upper right adjusting screw and its size is larger than the diameter of the upper right cylindrical threaded sleeve. The upper right buffer spring is fitted on the outer periphery of the upper right adjusting screw and is located between the upper right cylindrical threaded sleeve and the right flow limiting plate. The upper right sealing cover is disposed on the upper right cylindrical buffer seat and surrounds the upper right cylindrical buffer seat, the upper right cylindrical threaded sleeve, and the upper right adjusting nut.

4. The vertical fall cushioning flow restriction device for cartons of cigarettes of claim 1, wherein, The lower left buffer spring assembly includes a lower left cylindrical buffer seat, a lower left cylindrical threaded sleeve, a lower left adjusting screw, a lower left adjusting nut, a lower left buffer spring, and a lower left sealing cover. The lower left cylindrical buffer seat is fixedly installed on the outer surface of the left flow-limiting plate. The lower left cylindrical threaded sleeve is screwed onto the lower left cylindrical buffer seat. The lower left adjusting screw is disposed inside the lower left cylindrical buffer seat, with one end passing through the left flow-limiting plate and fixed to the lower end of the lower left buffer block, and the other end passing through the lower left cylindrical threaded sleeve and extending outward. The lower left adjusting nut is screwed onto the other end of the lower left adjusting screw and its size is larger than the diameter of the lower left cylindrical threaded sleeve. The lower left buffer spring is fitted on the outer periphery of the lower left adjusting screw and is located between the lower left cylindrical threaded sleeve and the left flow-limiting plate. The lower left sealing cover is disposed on the lower left cylindrical buffer seat and surrounds the lower left cylindrical buffer seat, the lower left cylindrical threaded sleeve, and the lower left adjusting nut.

5. The carton vertical drop cushion flow restrictor of claim 4, wherein, The lower right buffer spring assembly includes a lower right cylindrical buffer seat, a lower right cylindrical threaded sleeve, a lower right adjusting screw, a lower right adjusting nut, a lower right buffer spring, and a lower right sealing cover. The lower right cylindrical buffer seat is fixedly installed on the outer surface of the right flow-limiting plate. The lower right cylindrical threaded sleeve is screwed onto the lower right cylindrical buffer seat. The lower right adjusting screw is disposed inside the lower right cylindrical buffer seat, with one end passing through the right flow-limiting plate and fixed to the lower end of the lower right buffer block, and the other end passing through the lower right cylindrical threaded sleeve and extending outward. The lower right adjusting nut is screwed onto the other end of the lower right adjusting screw and its size is larger than the diameter of the lower right cylindrical threaded sleeve. The lower right buffer spring is fitted on the outer periphery of the lower right adjusting screw and is located between the lower right cylindrical threaded sleeve and the right flow-limiting plate. The lower right sealing cover is disposed on the lower right cylindrical buffer seat and surrounds the lower right cylindrical buffer seat, the lower right cylindrical threaded sleeve, and the lower right adjusting nut.

6. The vertical fall cushioning flow restriction device for cartons of cigarettes of claim 1, wherein, The left buffer cylinder assembly includes a left buffer cylinder mounting base, a left buffer cylinder, a left push rod, a left cylindrical buffer seat, and a left buffer spring. The bottom of the left buffer cylinder is mounted on the left buffer cylinder mounting base, and its output end is rotatably connected to one end of the left push rod. The left cylindrical buffer seat is disposed on the outer surface of the lower end of the left flow restrictor. The other end of the left push rod extends into the left cylindrical buffer seat. The left buffer spring is disposed in the left cylindrical buffer seat and located between the left push rod and the left flow restrictor.

7. The vertical fall cushioning flow restriction device for cartons of cigarettes of claim 6, wherein, The right buffer cylinder assembly includes a right buffer cylinder mounting base, a right buffer cylinder, a right push rod, a right cylindrical buffer seat, and a right buffer spring. The bottom of the right buffer cylinder is mounted on the right buffer cylinder mounting base, and its output end is rotatably connected to one end of the right push rod. The right cylindrical buffer seat is disposed on the outer surface of the lower end of the right flow restrictor. The other end of the right push rod extends into the right cylindrical buffer seat. The right buffer spring is disposed in the right cylindrical buffer seat and located between the right push rod and the right flow restrictor.

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