Carton forming equipment and forming method

Abstract

The present invention discloses a cigarette case forming device and a forming method. The device includes a cigarette case folding device and an upper hemming blocking device. The cigarette case folding device includes a cigarette case bottom grabbing mechanism and a cigarette case side grabbing mechanism. The cigarette case side grabbing mechanism is arranged on the cigarette case bottom grabbing mechanism. The cigarette case bottom grabbing mechanism is used to grab the bottom surface of the cigarette case and turn the bottom surface of the cigarette case to a horizontal state. The cigarette case side grabbing mechanism is used to grab one side surface of the cigarette case and turn the side surface to a vertical state. The upper hemming blocking device includes a first blocking mechanism and a second blocking mechanism. The first blocking mechanism is arranged on the top of the cigarette stack leveling baffle, and the second blocking mechanism is arranged on the top of the cigarette loading mechanism. The present invention can effectively solve the problem of the upper hemming of the old cigarette case sagging, enable the old cigarette case to be reused repeatedly, and thus achieve the purpose of recycling.

Description

Technical Field

[0001] The present invention relates to a cigarette box forming device and a cigarette box forming method, belonging to the technical field of cigarette manufacturing. Background Art

[0002] To implement the new development concepts of green and sharing, cigarette factories vigorously promote the recycling of packaging cigarette boxes. After re-organizing the cigarette boxes recycled from the market, they are reused for the second time.

[0003] As Figure 1 shown, after the new box skin 100 is opened, the upper folding edge 200 can be in a horizontal state due to its relatively large stiffness, and the cigarette cartons can be easily fed into the formed box skin. As Figure 2 shown, however, after the upper folding edge 200 of the recycled cigarette box skin 300 is folded and formed multiple times, the corrugated paper of the box skin becomes soft, and the upper folding edge 200 often sags due to poor stiffness during the cigarette box forming process, making it impossible to load the cigarette cartons into the formed box skin, resulting in the shutdown of the production line. The existing case packing and sealing machine is designed for new cigarette boxes, and there is no problem of the upper folding edge sagging in new cigarette boxes. Therefore, the existing case packing and sealing machine cannot solve this problem. Summary of the Invention

[0004] The purpose of the present invention is to provide a cigarette box forming device to solve the deficiencies in the prior art. It can effectively solve the problem of the upper folding edge sagging of old cigarette boxes, enabling old cigarette boxes to be reused repeatedly, thereby achieving the purpose of recycling.

[0005] Another purpose of the present invention is to provide a cigarette box forming method. Through this method, the upper folding edge of the old cigarette box can be supported, so that the cigarette cartons can be normally packed into the box, enabling old cigarette boxes to be reused repeatedly, thereby achieving the purpose of recycling.

[0006] The present invention provides a cigarette box forming device, including a cigarette box folding device and an upper folding edge blocking device. The cigarette box folding device includes a cigarette box bottom grabbing mechanism and a cigarette box side grabbing mechanism. The cigarette box side grabbing mechanism is arranged on the cigarette box bottom grabbing mechanism; the cigarette box bottom grabbing mechanism is used to grab the bottom of the cigarette box and flip the bottom of the cigarette box to a horizontal state, and the cigarette box side grabbing mechanism is used to grab one side of the cigarette box and flip this side to a vertical state; the upper folding edge blocking device includes a first blocking mechanism and a second blocking mechanism. The first blocking mechanism is arranged on the top of the cigarette stack leveling baffle, and the second blocking mechanism is arranged on the top of the cigarette loading mechanism.

[0007] In the aforesaid cigarette case forming equipment, preferably, the bottom grabbing mechanism of the cigarette case includes a first suction arm, a second suction arm, a suction arm driving rod, a first support and a first driving cylinder. One end of the suction arm driving rod is fixedly connected to the first suction arm, and the other end has an inclined section. The end of the inclined section is rotatably connected to the first driving cylinder. The suction arm driving rod is rotatably connected to the first support. There are at least two second suction arms, which are fixedly installed on the side of the first suction arm. Air channels are formed inside both the first suction arm and the second suction arm, and the air channels inside the two are communicated with each other. Bottom suction cups are installed on the tops of both the first suction arm and the second suction arm, and the bottom suction cups are communicated with the air channels. A first air pipe joint is arranged on the side of the first suction arm, and the first air pipe joint is communicated with the air channel.

[0008] In the aforesaid cigarette case forming equipment, preferably, the number of the bottom suction cups on the top of the first suction arm is four, and they are arranged at equal intervals. The number of the second suction arms is two, and two bottom suction cups are arranged on the top of each second suction arm.

[0009] In the aforesaid cigarette case forming equipment, preferably, the side grabbing mechanism of the cigarette case includes a third suction arm, a connecting arm, a swing arm, a driving arm, a support plate, a second driving cylinder and a mounting arm. The third suction arm is fixedly installed at the upper end of the mounting arm. There are two support plates, which are symmetrically arranged on both sides of the suction arm driving rod. Side plate suction cups are installed on the outer side of the third suction arm. An air channel is also arranged inside the third suction arm, and the side plate suction cups are communicated with the air channel inside the third suction arm. A second air pipe joint is arranged on the third suction arm. The upper end of the mounting arm is rotatably connected to one end of the connecting arm, and the driving arm is rotatably connected to the other end of the connecting arm. The lower end of the driving arm is rotatably connected to the support plate through a driving shaft. A connecting rod is fixedly installed on the driving shaft, and the connecting rod is connected to the second driving cylinder arranged on the top of the suction arm driving rod. The swing arm is arranged between the mounting arm and the driving arm. The upper end of the swing arm is rotatably connected to the connecting arm, and the lower end is rotatably connected to the support plate. The middle of the swing arm is connected to the lower end of the mounting arm through a connecting pull rod.

[0010] In the aforesaid cigarette case forming equipment, preferably, there are two connecting rods on the connecting arm. The upper ends of the mounting arm and the swing arm are rotatably installed between the two connecting rods. The number of the driving arms is two, which are installed at both ends of a rotating shaft passing through the connecting arm. The lower ends of the two driving arms are fixedly connected to the driving shaft.

[0011] In the aforesaid cigarette case forming equipment, preferably, both the first blocking mechanism and the second blocking mechanism adopt double-rod cylinders.

[0012] A method for forming a cigarette box, using the above-mentioned cigarette box forming equipment, specifically including the following steps:

[0013] Step a, control the cigarette box bottom grabbing mechanism to rotate clockwise to the first working position, and grab the outermost box skin in the box skin library;

[0014] Step b, control the cigarette box bottom grabbing mechanism to rotate counterclockwise to the second working position;

[0015] Step c, control the cigarette box side grabbing mechanism to rotate counterclockwise and grab the side of the box skin;

[0016] Step d, control the cigarette box bottom grabbing mechanism to rotate counterclockwise, and at the same time control the cigarette box side grabbing mechanism to rotate clockwise. When the box skin is opened and forms a 60° rhombus, control the first blocking mechanism and the second blocking mechanism to extend and insert into the box skin at the same time;

[0017] Step e, the cigarette box bottom grabbing mechanism rotates counterclockwise to the horizontal state and stops rotating, and the cigarette box side grabbing mechanism rotates clockwise to the vertical state and stops rotating. At this time, the box skin is completely opened to a rectangular state, and the upper folding edges at both ends of the box skin are respectively lapped on the tops of the first blocking mechanism and the second blocking mechanism.

[0018] Preferably, when in the first working position, the included angle between the cigarette box bottom grabbing mechanism and the horizontal plane is 75°.

[0019] Preferably, when in the second working position, the included angle between the cigarette box bottom grabbing mechanism and the horizontal plane is 15°.

[0020] Compared with the prior art, the present invention includes a cigarette box folding device and an upper folding edge blocking device. The cigarette box folding device includes a cigarette box bottom grabbing mechanism and a cigarette box side grabbing mechanism. The cigarette box bottom grabbing mechanism is used to grab the bottom of the cigarette box and flip the bottom of the cigarette box to the horizontal state. The cigarette box side grabbing mechanism is used to grab one side of the cigarette box and flip the side to the vertical state; the upper folding edge blocking device includes a first blocking mechanism and a second blocking mechanism. The first blocking mechanism is arranged on the top of the cigarette stack leveling baffle, and the second blocking mechanism is arranged on the top of the cigarette loading mechanism. Through the cigarette box bottom grabbing mechanism and the cigarette box side grabbing mechanism, the box skin can be completely opened to form a rectangular state. During the opening process of the box skin, the upper folding edges of the box skin are supported by the first blocking mechanism and the second blocking mechanism to prevent the upper folding edges from sagging, so as to ensure that the strip cigarettes can be normally packed into the box. Effectively solves the problem that the old cigarette boxes cannot be used.

[0021] The present invention provides a method for forming a cigarette box. Through this forming method, the first blocking mechanism and the second blocking mechanism can be perfectly matched with the cigarette box bottom grabbing mechanism and the cigarette box side grabbing mechanism, so as to ensure that the box skin can be normally opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a new box skin;

[0023] Figure 2 It is a schematic structural diagram of an old box skin;

[0024] Figure 3 It is an axonometric view of the overall structure of the present invention;

[0025] Figure 4 It is an axonometric view of the bottom grabbing mechanism of the cigarette box;

[0026] Figure 5 It is an axonometric view of the side grabbing mechanism of the cigarette box.

[0027] DESCRIPTION OF REFERENCE NUMERALS:

[0028] 100 - new box skin, 200 - upper folding edge, 300 - circulating cigarette box skin, 400 - upper folding edge;

[0029] 1 - bottom grabbing mechanism of cigarette box, 2 - side grabbing mechanism of cigarette box, 3 - first blocking mechanism, 4 - second blocking mechanism, 5 - cigarette stack leveling baffle, 6 - cigarette loading mechanism, 7 - first suction arm, 8 - second suction arm, 9 - suction arm drive rod, 10 - first support, 11 - first drive cylinder, 12 - inclined section, 13 - bottom plate suction cup, 14 - first air pipe joint, 15 - third suction arm, 16 - connecting arm, 17 - swing arm, 18 - drive arm, 19 - support plate, 20 - second drive cylinder, 21 - mounting arm, 22 - side plate suction cup, 23 - second air pipe joint, 24 - drive shaft, 25 - connecting rod, 26 - connecting plate, 27 - rotating shaft, 28 - connecting pull rod, 29 - support plate, 30 - cylinder mounting seat. DETAILED DESCRIPTION OF THE INVENTION

[0030] The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] Embodiments of the present invention: As Figure 3 shown, a cigarette box forming device includes a cigarette box folding device and an upper folding edge blocking device. The cigarette box folding device includes a bottom grabbing mechanism 1 of the cigarette box and a side grabbing mechanism 2 of the cigarette box. The side grabbing mechanism 2 of the cigarette box is arranged on the bottom grabbing mechanism 1 of the cigarette box; the bottom grabbing mechanism 1 of the cigarette box is used to grab the bottom of the cigarette box and turn the bottom of the cigarette box to a horizontal state, and the side grabbing mechanism 2 of the cigarette box is used to grab one side of the cigarette box and turn the side to a vertical state; the upper folding edge blocking device includes a first blocking mechanism 3 and a second blocking mechanism 4. The first blocking mechanism 3 is arranged on the top of the cigarette stack leveling baffle 5, and the second blocking mechanism 4 is arranged on the top of the cigarette loading mechanism 6.

[0032] In a cigarette factory, the cigarette box forming equipment is only one of the equipment in the whole production line. There is a box skin warehouse above the equipment. The box skin warehouse is used to continuously supply box skins. During operation, the bottom grabbing mechanism 1 of the cigarette box rotates clockwise to the box skin grabbing station, grabs a box skin, then rotates counterclockwise to the second station and stops. Then the side grabbing mechanism 2 of the cigarette box starts to work and grabs one side of the box skin. Then the bottom grabbing mechanism 1 of the cigarette box continues to rotate counterclockwise, and the side grabbing mechanism 2 of the cigarette box rotates clockwise. At this time, the box skin is gradually opened. When the box skin is opened to a preset angle, the first blocking mechanism 3 and the second blocking mechanism 4 extend. When the bottom grabbing mechanism 1 of the cigarette box is in a horizontal state and the side grabbing mechanism 2 of the cigarette box is in a vertical state, the box skin is completely opened and becomes a rectangular cigarette box. The upper folding edge of the cigarette box is supported by the first blocking mechanism 3 and the second blocking mechanism 4 to prevent sagging. The device of the present invention is applicable to new box skins and also to recycled old box skins, effectively solving the problem that cigarettes cannot be loaded due to the sagging of the upper folding edge.

[0033] It should be noted that what the present invention wants to protect is the mechanical part of the cigarette box forming equipment. The present invention also needs the assistance of an electric control system during operation, such as a PLC programmable controller and a hydraulic control system. The PLC programmable controller, the hydraulic control system, the cigarette stack leveling baffle 5 and the cigarette loading mechanism 6 mentioned in the present invention are all prior arts. The specific technical solutions thereof will not be elaborated in this case. Those skilled in the art can combine the above electric control system and related devices with the present invention according to the common knowledge in the art.

[0034] The following further introduces the present invention in combination with a specific embodiment, such as Figure 4As shown in the figure, the bottom surface grabbing mechanism 1 of the cigarette box includes a first suction arm 7, a second suction arm 8, a suction arm driving rod 9, a first support 10 and a first driving cylinder 11. The suction arm driving rod 9 is composed of a straight section and an inclined section 12. The end of the straight section is fixedly connected to the first suction arm 7 and they are coaxial. The end of the inclined section 12 is formed with a connecting fork structure, and the connecting fork is rotatably connected to the hydraulic rod of the first driving cylinder 11. The straight section on the suction arm driving rod 9 is rotatably connected to the first support 10. The first driving cylinder 11 preferably adopts a hydraulic cylinder because the hydraulic cylinder is convenient to control. The fixed end of the first driving cylinder 11 is fixed to the frame or the ground through a mounting seat; There are at least two second suction arms 8. In this embodiment, two are preferably provided, and the number can be determined according to the bottom area of the box skin. The second suction arms 8 are fixedly installed on the side of the first suction arm 7. In this embodiment, they are preferably arranged on the same side, and the two second suction arms 8 are arranged in parallel and are both perpendicular to the first suction arm 7. Air channels are formed inside both the first suction arm 7 and the second suction arm 8, and the air channel in the second suction arm 8 is communicated with the air channel in the first suction arm 7. Bottom plate suction cups 13 are installed on the tops of both the first suction arm 7 and the second suction arm 8. The bottom plate suction cups 13 are made of rubber and can be compressed. The bottom plate suction cups 13 are communicated with the air channels; A first air pipe joint 14 is provided on the side of the first suction arm 7. The first air pipe joint 14 is communicated with the air channel. The first air pipe joint 14 is used to connect the air extraction equipment in the workshop. By performing the air extraction operation through the air extraction equipment, a negative pressure is formed inside the bottom plate suction cups 13, so as to suck the bottom plate of the box skin.

[0035] In this embodiment, the inclined section 12 on the suction arm driving rod 9 preferably inclines upward. On the one hand, it is convenient to arrange the first driving cylinder 11, and on the other hand, the first suction arm 7 has a larger working angle. In addition, through the above structural design of the first suction arm 7 and the second suction arm 8, not only space is saved, but also the box skin can be adsorbed stably. Preferably, the number of bottom plate suction cups 13 on the top of the first suction arm 7 is four and they are arranged at equal intervals; The number of the second suction arms 8 is two, and two bottom plate suction cups 13 are arranged on the top of each second suction arm 8.

[0036] Further, as Figure 5As shown in the figure, the side grabbing mechanism 2 of the cigarette case includes a third suction arm 15, a connecting arm 16, a swing arm 17, a driving arm 18, a support plate 19, a second driving cylinder 20 and a mounting arm 21. The third suction arm 15 is fixedly installed at the upper end of the mounting arm 21. To improve the installation stability, a support plate 29 can be provided on the outer side of the mounting arm 21. The support plate 29 is used to support the bottom surface of the third suction arm 15. The side surface of the third suction arm 15 is fixedly connected to the outer side surface of the mounting arm 21. There are two support plates 19, symmetrically arranged on both sides of the suction arm driving rod 9. A side plate suction cup 22 is installed on the outer side surface of the third suction arm 15. The number of side plate suction cups 22 is preferably 3. An air passage is also provided inside the third suction arm 15. The side plate suction cup 22 is communicated with the air passage inside the third suction arm 15. A second air pipe joint 23 is provided on the third suction arm 15. The second air pipe joint 23 is used to connect with an air extraction device to form a negative pressure inside the side plate suction cup 22. The side plate suction cup 22 is also made of rubber material. The upper end of the mounting arm 21 is rotatably connected to one end of the connecting arm 16. The driving arm 18 is rotatably connected to the other end of the connecting arm 16. The lower end of the driving arm 18 is rotatably connected to the support plate 19 through a driving shaft 24. A connecting rod 25 is fixedly installed on the driving shaft 24. The connecting rod 25 is connected to the second driving cylinder 20 provided at the top of the suction arm driving rod 9. The second driving cylinder 20 is fixed to the top of the suction arm driving rod 9 through a cylinder mounting seat 30. The swing arm 17 is arranged between the mounting arm 21 and the driving arm 18. The upper end of the swing arm 17 is rotatably connected to the connecting arm 16, and the lower end is rotatably connected to the support plate 19. The middle of the swing arm 17 is rotatably connected to the lower end of the mounting arm 21 through a connecting pull rod 28.

[0037] The side grabbing mechanism 2 of the cigarette case has two working positions. When in the first working position, the second driving cylinder 20 extends, and the side plate suction cup 22 contacts the side of the case skin and adsorbs the side of the case skin. When in the second working position, the second driving cylinder 20 contracts, and the side plate suction cup 22 flips to a horizontal state and stretches the side of the case skin to a vertical state.

[0038] To make the side grabbing mechanism 2 of the cigarette case easy to set up and operate smoothly, further, there are two connecting plates 26 on the connecting arm 16. The number of the mounting arm 21 and the swing arm 17 is both 1. The upper ends of both are rotatably installed between the two connecting plates 26. The number of the driving arms 18 is 2, installed at both ends of a rotating shaft 27 passing through the connecting arm 16. The lower ends of the two driving arms 18 are both fixedly connected to the driving shaft 24.

[0039] Furthermore, in the present invention, both the first blocking mechanism 3 and the second blocking mechanism 4 adopt double-rod cylinders. The double-rod cylinder is a prior art and can be directly purchased.

[0040] The present invention also provides a cigarette case forming method. This forming method is based on the above cigarette case forming equipment and specifically includes the following steps:

[0041] Step a: Control the bottom gripper mechanism 1 of the cigarette case to rotate clockwise to the first working position and grip the outermost cigarette case wrapper in the wrapper magazine.

[0042] Step b: Control the bottom gripper mechanism 1 of the cigarette case to rotate counterclockwise to the second working position.

[0043] Step c: Control the side gripper mechanism 2 of the cigarette case to rotate counterclockwise and grip the side of the cigarette case wrapper.

[0044] Step d: Control the bottom gripper mechanism 1 of the cigarette case to rotate counterclockwise, and at the same time control the side gripper mechanism 2 of the cigarette case to rotate clockwise. When the cigarette case wrapper is opened and forms a 60° rhombus, control the first blocking mechanism 3 and the second blocking mechanism 4 to extend and insert into the cigarette case wrapper simultaneously.

[0045] Step e: The bottom gripper mechanism 1 of the cigarette case rotates counterclockwise to the horizontal state and stops rotating, and the side gripper mechanism 2 of the cigarette case rotates clockwise to the vertical state and stops rotating. At this time, the cigarette case wrapper is completely opened to a rectangular state, and the upper folded edges at both ends of the cigarette case wrapper are respectively lapped on the tops of the first blocking mechanism 3 and the second blocking mechanism 4.

[0046] In this embodiment, when in the first working position, the angle between the bottom gripper mechanism 1 of the cigarette case and the horizontal plane is 75°; when in the second working position, the angle between the bottom gripper mechanism 1 of the cigarette case and the horizontal plane is 15°.

[0047] The structure, features and function effects of the present invention have been described in detail based on the embodiments shown in the drawings. The above is only the preferred embodiment of the present invention, but the present invention is not limited to the scope shown in the drawings. Any changes made according to the concept of the present invention, or modified into equivalent embodiments with equivalent changes, still within the spirit covered by the specification and the drawings, shall be within the protection scope of the present invention.

Claims

1. A method for forming a cigarette box, characterized in that: Adopt a cigarette case forming device, and the cigarette case forming device includes: A cigarette case folding device, including a cigarette case bottom grabbing mechanism (1) and a cigarette case side grabbing mechanism (2), and the cigarette case side grabbing mechanism (2) is arranged on the cigarette case bottom grabbing mechanism (1); the cigarette case bottom grabbing mechanism (1) is used to grab the bottom surface of the cigarette case and turn the bottom surface of the cigarette case to a horizontal state, and the cigarette case side grabbing mechanism (2) is used to grab one side of the cigarette case and turn this side to a vertical state; An upper hem blocking device, including a first blocking mechanism (3) and a second blocking mechanism (4), the first blocking mechanism (3) is arranged on the top of the cigarette stack leveling baffle (5), and the second blocking mechanism (4) is arranged on the top of the cigarette loading mechanism (6); The cigarette case forming method specifically includes the following steps: Step a, control the cigarette case bottom grabbing mechanism (1) to rotate clockwise to the first working position and grab the outermost box skin in the box skin library; Step b, control the cigarette case bottom grabbing mechanism (1) to rotate counterclockwise to the second working position; Step c, control the cigarette case side grabbing mechanism (2) to rotate counterclockwise and grab the side of the box skin; Step d, control the cigarette case bottom grabbing mechanism (1) to rotate counterclockwise, and at the same time control the cigarette case side grabbing mechanism (2) to rotate clockwise. When the box skin is opened and in a 60° diamond shape, control the first blocking mechanism (3) and the second blocking mechanism (4) to extend and insert into the box skin at the same time; Step e, the cigarette case bottom grabbing mechanism (1) rotates counterclockwise to the horizontal state and stops rotating, and the cigarette case side grabbing mechanism (2) rotates clockwise to the vertical state and stops rotating. At this time, the box skin is completely opened to a rectangular state, and the upper hems at both ends of the box skin are respectively lapped on the tops of the first blocking mechanism (3) and the second blocking mechanism (4).

2. The cigarette case forming method according to claim 1, characterized in that: When in the first working position, the angle between the cigarette case bottom grabbing mechanism (1) and the horizontal plane is 75°.

3. The cigarette case forming method according to claim 1, wherein: When in the second working position, the angle between the cigarette case bottom grabbing mechanism (1) and the horizontal plane is 15°.

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