Improved cigarette transparent paper end pre-heating and sealing device of packaging machine

Abstract

The invention discloses an improved cigarette transparent paper end pre-heating and sealing device for a packaging machine, which comprises a folding plate, a detection device and a cigarette pushing mechanism, and further comprises a telescopic device arranged on a base on the outer side of a connecting groove; one end of the connecting frame is connected with a telescopic rod of the telescopic device; one end of the electric soldering iron mechanism is connected with the other end of the connecting frame; wherein a connecting groove is formed in the folding plate; the detection device is in signal connection with the telescopic device; the detection device is arranged on one side of the cigarette pushing mechanism, and the cigarette pushing mechanism is arranged at the inlet end of the cigarette conveying mechanism of the packaging machine; the detection device is used for monitoring the moving track of the cigarette pushing plate. According to the invention, the quality defects of blister wrinkling, loosening, trailing, unstable hot sealing, substandard sealing degree and the like of the end part of the strip transparent paper can be fundamentally solved, so that the packaging efficiency of the cigarette is improved, and the quality is ensured; and meanwhile, the flatness and consistency of hot sealing of the end faces of the cigarettes can be improved, and the defective rate is reduced.

Description

Technical Field

[0001] The present invention relates to a preheating and sealing device, specifically an improved preheating and sealing device for the end of the transparent paper of cigarette cartons in a packaging machine, belonging to the technical field of cigarette manufacturing. Background Art

[0002] Generally speaking, transparent paper in cigarette packaging is a transparent packaging material wrapped outside cigarette cartons (small packs) and cartons (soft cartons) to prevent cigarettes from getting damp, losing moisture and aroma, and to improve the appearance quality of products.

[0003] At present, during the daily quality inspection process of the YB95 transparent paper packaging machine for cartons, it is found that there are some quality defects in the folding, lifting, and heat sealing of the transparent paper at the end of the cigarette cartons. After the lower long side of the transparent paper at the end of the cigarette cartons is folded, it needs to be lifted upward by a lifter. During the lifting process, the upper long side of the end is folded. Finally, the end is heat-sealed by an end iron to complete the packaging. During the process of lifting after the lower long side is folded, it is easy to form bubbles and looseness, and occasionally the lower long side will be dragged downward during the lifting process, resulting in a quality defect of trailing. At the same time, in the next end heat-sealing process, there will also be problems such as insecure heat sealing and unqualified sealing degree. When these problems occur, the moisture and aroma of the cigarettes themselves will be lost, thus affecting consumers' experience of the taste of the cigarettes and also affecting the appearance quality of the cigarette cartons.

[0004] At present, a Chinese invention patent with the publication number CN204527830U discloses a heat-sealing device for the end of the transparent paper of a small box, which includes a front-end heat-sealing device and a rear-end heat-sealing device that move towards each other and are arranged on the left and right sides of the small box conveying channel; both the front-end heat-sealing device and the rear-end heat-sealing device include an integrally formed guide plate, a first rectangular heat-sealing plate, and a second rectangular heat-sealing plate. When the small box is conveyed along the small box conveying channel to the position of the guide plate, the front-end and rear-end heat-sealing devices clamp the front and rear ends of the transparent paper on the small box for positioning; when the small box is conveyed to the first rectangular heat-sealing plate, the front-end and rear-end heat-sealing devices clamp the front and rear ends of the transparent paper on the small box for pre-heat-sealing; when the small box is conveyed to the second rectangular heat-sealing plate, the front-end and rear-end heat-sealing devices clamp the front and rear ends of the transparent paper on the small box for heat-sealing and shaping. However, this invention has the following several deficiencies: 1. The guide plate does not have the function of pre-heat-sealing; 2. The heat on the guide plate is transferred by the heat radiation of the rectangular heat-sealing plate, so its temperature cannot be guaranteed to be a constant value. If the temperature is too high, the transparent paper is likely to wrinkle during guiding, which will cause uneven end surface heat-sealing and thus affect the sealing degree of the small box; 3. The guide plate and the rectangular heat-sealing iron are an integral body. When the cigarette pushing plate pushes the cigarettes, both the guide plate and the rectangular iron are in an open state, and the cigarette pack can be smoothly pushed into the heat-sealing channel. When the iron clamps together, the cigarette pack has already been pushed to the rectangular heat-sealing plate, so the guide plate does not play the role of squeezing and exhausting the gas between the transparent paper and the small box body. Moreover, the design of the cigarette pushing mechanism in the current existing technology is generally relatively complex in structure and has poor cigarette pushing effect. In short, it is often very inconvenient.

[0005] Therefore, the key to solving the above technical problems is to develop an improved pre-heat-sealing device for the end of the transparent paper of the cigarette in the packaging machine with ingenious design, practicality and reliability. Summary of the Invention

[0006] In view of the many defects and deficiencies in the above background technology, the present invention has made improvements and innovations. The purpose is to provide an improved pre-heat-sealing device for the end of the transparent paper of the cigarette in the packaging machine with simple structure and automation, which can fundamentally solve the quality defects such as wrinkling, loosening, trailing, insecure heat-sealing, and unqualified sealing degree at the end of the strip transparent paper, thereby improving the packaging efficiency of the cigarette and ensuring the quality.

[0007] Another object of the present invention is to increase the flatness and consistency of the end surface heat-sealing of the cigarette, reduce the defective rate, and ensure that the quality of the final product meets the requirements.

[0008] To solve the above problems and achieve the above object of the invention, an improved pre-heat-sealing device for the end of the transparent paper of the cigarette in the packaging machine of the present invention is realized by adopting the following design structure and the following technical solutions:

[0009] As an improvement to the improved end preheating and sealing device for the transparent paper of cigarette packs in the present invention, it includes a folding plate (1), a detection device (2), and a cigarette pushing mechanism that cooperates with them to complete the work. It further includes:

[0010] A telescopic device (3), and the telescopic device (3) is arranged on the base (6) outside the connecting groove (11);

[0011] A connecting frame (4), and the connecting frame (4) is arranged between the telescopic device (3) and the connecting groove (11). One end of the connecting frame (4) is connected to the telescopic rod (31) of the telescopic device (3);

[0012] An electric iron mechanism (5), and one end of the electric iron mechanism (5) is connected to the other end of the connecting frame (4);

[0013] Among them, a connecting groove (11) is opened on the folding plate (1); there is a signal connection between the detection device (2) and the telescopic device (3); the detection device (2) is arranged on one side of the cigarette pushing mechanism. The cigarette pushing mechanism is arranged at the inlet end of the cigarette conveying mechanism of the packaging machine. The cigarette pushing mechanism reciprocates under the drive of a driving device, and is used to push the cigarettes to the area to be preheated and sealed for pre-ironing and sealing;

[0014] This detection device (2) is used to monitor the running track of the cigarette pushing plate (7).

[0015] As the above improvement of the present invention, the connecting groove (11) is opened in an "eight" shape through one end of the folding plate (1). Among them, the connecting groove (11) is a rectangular hole;

[0016] The cigarette pushing mechanism includes a cigarette pushing plate (7), and the cigarette pushing plate (7) is slidably connected to the cigarette pushing plate connecting seat (71);

[0017] A cigarette pushing working part is connected to the end of the working end of the cigarette pushing plate (7). The cigarette pushing working part is a concave plate-shaped structure with a groove opened in the middle of the upper end.

[0018] As the further improvement of the present invention above, the telescopic device (3) is fixedly connected or movably connected to the connecting plate of the base (6). Among them, the telescopic device (3) is a cylinder, and a solenoid valve is connected to the cylinder.

[0019] As the further improvement of the present invention above, the connecting frame (4) includes:

[0020] Connecting seats (41), and the connecting seats (41) are symmetrically arranged in pairs on the connecting plate of the base (6);

[0021] A four-bar structure, and the lower end of the four-bar structure is rotatably connected to the connecting seat (41).

[0022] As a further improvement of the present invention described above, the four-bar structure includes:

[0023] A fixing frame (42), one end of the fixing frame (42) is connected to the soldering iron mechanism (5);

[0024] A first connecting shaft (43), the first connecting shaft (43) is rotatably connected between two connecting seats (41) on the side close to the soldering iron mechanism (5);

[0025] Two first connecting rods (44), the lower ends of the two first connecting rods (44) are respectively connected to both ends of the first connecting shaft (43), and the upper ends of the two first connecting rods (44) are both rotatably connected to the fixing frame (42);

[0026] A second connecting shaft (45), the second connecting shaft (45) is rotatably connected between two connecting seats (41) on the side close to the telescopic device (3);

[0027] Two second connecting rods (46), the lower ends of the two second connecting rods (46) are respectively connected to both ends of the second connecting shaft (45), and the upper ends of the two second connecting rods (46) are both rotatably connected to the fixing frame (42);

[0028] A rocker (47), the rocker (47) is slidably connected between the two second connecting rods (46).

[0029] As a further improvement of the present invention described above, a chute for connecting the rocker (47) is provided through the middle section of the second connecting rod (46);

[0030] The middle part of the rocker (47) is connected to the telescopic rod (31).

[0031] As a further improvement of the present invention described above, the fixing frame (42) is integrally in the shape of a ladder structure, and the fixing frame (42) includes a cross bar arranged oppositely to each other and rotating rods symmetrically rotatably connected between the two cross bars. Among them, the upper ends of the two first connecting rods (44) and the upper ends of the two second connecting rods (46) are respectively connected to the corresponding rotating rods.

[0032] As a further improvement of the present invention described above, the detection device (2) is a proximity switch;

[0033] One end of the telescopic rod (31) is rotatably connected to the rocker (47) through a hemispherical member.

[0034] As a further improvement of the present invention described above, the soldering iron mechanism (5) includes:

[0035] A soldering iron body (51), one end of the soldering iron body (51) is connected to the fixing frame (42);

[0036] A heating rod (52), the heating rod (52) is connected to the other end of the soldering iron body (51);

[0037] A temperature measuring platinum thermal resistor, which is arranged inside the soldering iron body (51);

[0038] The heating rod (52) is connected to the other end of the soldering iron body (51) in an "eight" shape, and the heating rod (52) passes through the connecting groove (11) and contacts the transparent paper (8) of the cigarette to complete the heat sealing work.

[0039] As a further improvement of the present invention, a method for using an improved device for preheating and sealing the ends of transparent paper of cigarette strips in a packaging machine comprises the following steps:

[0040] S1, after the cigarette strips (9) are packed by the upstream CT packaging machine, they are sent to the first lifter through the cigarette strip conveying channel. At this time, the transparent paper (8) and the pull wire are cut into a single transparent paper with a pull wire by the transparent paper (8) and the pull wire conveying and cutting device. The transparent paper (8) is clamped and sent to the top of the first lifter by the clamp device. The first lifter lifts the cigarette strips (9) and the transparent paper (8) together, so that the single transparent paper (8) forms a U-shaped package. When it is lifted to the highest position, the cigarette pusher (7) pushes the cigarette strips (9) with the transparent paper (8) to the right. In the process of pushing, the folding of the lower long sides of the two ends of the transparent paper (8) and the folding of the front and rear short sides of the two ends are gradually completed;

[0041] S2, another cigarette (9) pushed by the cigarette pushing plate (7) is gradually pushed to the right, and when it is pushed to the top of the second lifter, the electric soldering iron mechanism (5) starts to seal the front and rear short sides and the lower long side of the transparent paper (8) of the end cigarette, and quickly completes the pre-sealing of the lower part of the end;

[0042] S3, after the pre-sealing is completed, the second lifter is lifted upwards, and in the process of lifting, the folding and sealing process of the long edges on both ends of the cigarette transparent paper (8) is completed, and the packaging process of the transparent paper (8) is now completely completed.

[0043] The working principle is as follows: when in use, the cigarette strips (9) are packed by the upstream CT packaging machine and then sent to the first lifter through the cigarette strip conveying channel. At this time, the transparent paper (8) and the drawing wire conveying and cutting device cut the transparent paper (8) and the drawing wire into a single transparent paper with a drawing wire. The clamp device clamps the transparent paper (8) to the top of the first lifter. The first lifter lifts the cigarette strips (9) and the transparent paper (8) together, so that the single transparent paper (8) forms a U-shaped package. When it is lifted to the highest position, the cigarette pusher (7) pushes the cigarette strips (9) with the transparent paper (8) to the right. During the pushing process, the cigarette strips (9) are gradually pushed to the right. The steps of folding the lower long sides of the two ends of the cigarette transparent paper (8) and folding the front and rear short sides of the two ends are completed. Then, another cigarette (9) pushed by the cigarette pushing plate (7) is gradually pushed to the right. When it is pushed to the top of the second lifter, the electric soldering iron mechanism (5) starts to seal the front and rear short sides and the lower long side of the end of the cigarette transparent paper (8) at this end, and quickly completes the pre-sealing of the lower part of this end. Finally, after the pre-sealing is completed, the second lifter is lifted upward, and the folding and sealing process of the upper long sides of the two ends of the cigarette transparent paper (8) is completed during the lifting process. At this point, the packaging process of the transparent paper (8) is completely completed.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] 1. The invention has a simple structure, is practical and reliable, and can fundamentally solve the quality defects of the ends of the strips of transparent paper, such as wrinkles, looseness, tailing, loose hot sealing, and substandard sealing;

[0046] 2. The electric soldering iron mechanism of the present invention can maintain the temperature at a constant value, thereby increasing the flatness and consistency of the hot sealing of the end surface of the cigarette strip, reducing the defective rate, and ensuring that the quality of the final product meets the requirements;

[0047] 3. The present invention pre-seals the transparent paper, which can ensure that the transparent paper of the cigarette carton will not slide or misalign when the cigarette carton is lifted by the second lifter, and prevent the looseness and wrinkles of the transparent paper of the cigarette carton, thereby improving the packaging efficiency of the cigarette carton and ensuring the quality;

[0048] 4. The present invention can operate automatically, ensuring the consistency of product quality and production process, thereby improving production efficiency and work efficiency and reducing labor costs;

[0049] 5. Since the present invention is provided with a cigarette pushing mechanism that cooperates with it to complete the work, the cigarette pushing mechanism has a simple structure and a novel and reasonable design. By using the cigarette pushing mechanism in combination with the upstream control equipment in the existing structure, it can achieve the goal of pushing the cigarette cartons to the designated working area more reliably and safely, and can automatically push the produced cigarette cartons to the next process, saving the time and labor cost of manual operation and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The following further describes in detail the specific embodiments of the present invention in conjunction with the accompanying drawings, where:

[0051] Figure 1 is one of the usage state diagrams of the present invention;

[0052] Figure 2 is the second usage state diagram of the present invention;

[0053] Figure 3 is the third usage state diagram of the present invention;

[0054] Figure 4 is the fourth usage state diagram of the present invention;

[0055] Figure 5 is the fifth usage state diagram of the present invention;

[0056] Figure 6 is the partial structural schematic diagram of the present invention;

[0057] Figure 7 is one of the usage state diagrams of the current cigarette transparent paper packaging machine;

[0058] Figure 8 is the second usage state diagram of the current cigarette transparent paper packaging machine;

[0059] Among them, the reference numerals in the figure: 1 - folding plate, 11 - connecting groove;

[0060] 2 - detection device;

[0061] 3 - telescopic device, 31 - telescopic rod;

[0062] 4 - connecting frame, 41 - connecting seat, 42 - fixing frame, 43 - first connecting shaft, 44 - first connecting rod, 45 - second connecting shaft, 46 - second connecting rod, 47 - rocker;

[0063] 5 - electric soldering iron mechanism, 51 - soldering iron body, 52 - heating rod;

[0064] 6 - equipment base;

[0065] 7 - cigarette pushing plate, 71 - cigarette pushing plate connecting seat;

[0066] 8 - transparent paper;

[0067] 9 - cigarette. Specific embodiments

[0068] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0069] As shown in the attached Figure 1 to the attached Figure 6 of an improved end preheating and sealing device for the transparent paper of cigarette cartons in a packaging machine, which includes a folding plate 1, a detection device 2, and a cigarette pushing mechanism that cooperates with it to complete the work, and further includes:

[0070] A telescopic device 3, and the telescopic device 3 is arranged on the base 6 outside the connecting groove 11;

[0071] A connecting frame 4, and the connecting frame 4 is arranged between the telescopic device 3 and the connecting groove 11, and one end of the connecting frame 4 is connected to the telescopic rod 31 of the telescopic device 3;

[0072] An electric soldering iron mechanism 5, and one end of the electric soldering iron mechanism 5 is connected to the other end of the connecting frame 4;

[0073] Among them, a connecting groove 11 is opened on the folding plate 1; there is a signal connection between the detection device 2 and the telescopic device 3; the detection device 2 is arranged on one side of the cigarette pushing mechanism, and the cigarette pushing mechanism is arranged at the inlet end of the cigarette conveying mechanism of the packaging machine. The cigarette pushing mechanism reciprocates under the drive of the driving device to push the cigarette cartons to the area to be preheated and sealed for pre-ironing and sealing;

[0074] The detection device 2 is used to monitor the running track of the cigarette pushing plate 7.

[0075] In the present invention, the detection device 2 is a conventional structure, and any device that can be purchased on the market and can be used to achieve the functions of the present invention can be used in the present invention. The detection device 2 can also be a PLC or a programmable logic controller or a PC. The detection device 2 is arranged above one end of the equipment base 6.

[0076] Furthermore, as Figure 3 shown, the connecting groove 11 is opened in an "eight" shape through one end of the folding plate 1. Among them, the connecting groove 11 is a rectangular hole;

[0077] The cigarette pushing mechanism includes a cigarette pushing plate 7, and the cigarette pushing plate 7 is slidably connected to the cigarette pushing plate connecting seat 71;

[0078] A cigarette pushing working part is connected to the end of the working end of the cigarette pushing plate 7, and the cigarette pushing working part is a concave plate-shaped structure with a groove opened in the middle of the upper end.

[0079] In the invention, the cigarette pushing plate 7 is in the structure of a long plate-like body; the connecting grooves 11 are all rectangular holes, and the two rectangular holes are arranged in an "eight" shape and penetrate through the folding plate 1.

[0080] In the present invention, the detection device 2 is located above one end of the equipment base 6 and is arranged on one side of the cigarette pushing plate 7. When the detection device 2 detects that the non-cigarette-pushing end of the cigarette pushing plate 7 reaches inside the cigarette pushing plate connecting seat 71, the detection device 2 immediately sends a signal to the solenoid valve of the telescopic device 3. The detection device 2 determines at what specific position of the operation of the cigarette pushing plate 7 it specifically detects according to the pause time and / or reset time when the cigarette pushing plate 7 reaches the rightmost end, as well as the preheating sealing effect time of the soldering iron mechanism 5 and the starting time of the second lifting mechanism, and then sends a steering signal to the soldering iron mechanism 5.

[0081] Further, as Figures 1 to 3 shown, the telescopic device 3 is fixedly connected or movably connected to the connecting plate of the base 6. Among them, the telescopic device 3 is a cylinder, and a solenoid valve is connected to the cylinder.

[0082] Further, as Figure 5 and Figure 6 shown, the connecting frame 4 includes:

[0083] Connecting seats 41, and the connecting seats 41 are symmetrically arranged in pairs on the connecting plate of the base 6;

[0084] A four-bar structure, and the lower end of the four-bar structure is rotatably connected to the connecting seat 41.

[0085] Specifically, as Figure 6 shown, the four-bar structure includes:

[0086] A fixed frame 42, and one end of the fixed frame 42 is connected to the soldering iron mechanism 5;

[0087] A first connecting shaft 43, and the first connecting shaft 43 is rotatably connected between two connecting seats 41 close to the soldering iron mechanism 5;

[0088] Two first connecting rods 44, the lower ends of the two first connecting rods 44 are respectively connected to both ends of the first connecting shaft 43, and the upper ends of the two first connecting rods 44 are both rotatably connected to the fixed frame 42;

[0089] A second connecting shaft 45, and the second connecting shaft 45 is rotatably connected between two connecting seats 41 close to the telescopic device 3;

[0090] Two second connecting rods 46, the lower ends of the two second connecting rods 46 are respectively connected to both ends of the second connecting shaft 45, and the upper ends of the two second connecting rods 46 are both rotatably connected to the fixed frame 42;

[0091] The rocker 47 is slidably connected between two second connecting rods 46.

[0092] More specifically, as Figure 6 shown, a chute for connecting the rocker 47 is formed through the middle section of the second connecting rod 46.

[0093] The middle part of the rocker 47 is connected to the telescopic rod 31.

[0094] More specifically, as Figure 6 shown, the fixing frame 42 is integrally in a ladder-shaped structure. The fixing frame 42 includes a cross bar arranged oppositely to each other and a rotating rod symmetrically and rotatably connected between the two cross bars. Among them, the upper ends of the two first connecting rods 44 and the upper ends of the two second connecting rods 46 are respectively connected to the corresponding rotating rods.

[0095] Furthermore, as Figure 1 shown, the detection device 2 is a proximity switch;

[0096] One end of the telescopic rod 31 is rotatably connected to the rocker 47 through a hemispherical member.

[0097] Furthermore, as Figure 6 shown, the soldering iron mechanism 5 includes:

[0098] A soldering iron body 51, one end of the soldering iron body 51 is connected to the fixing frame 42;

[0099] A heating rod 52, the heating rod 52 is connected to the other end of the soldering iron body 51;

[0100] A temperature-measuring platinum thermal resistance, the temperature-measuring platinum thermal resistance is arranged inside the soldering iron body 51;

[0101] Among them, the heating rod 52 is connected to the other end of the soldering iron body 51 in an "eight" shape. The heating rod 52 passes through the connecting groove 11 and contacts the strip cigarette transparent paper 8 to complete the heat-sealing work.

[0102] Furthermore, a method for using an improved pre-heat sealing device for the end of the strip cigarette transparent paper of a packaging machine, the method includes the following steps:

[0103] S1, after the strip cigarette 9 is packaged by the upstream machine CT packaging machine, it is sent to the first elevator through the strip cigarette conveying channel. At this time, the transparent paper 8 and the drawstring are cut into single transparent papers with drawstrings by the transparent paper 8 and drawstring conveying and cutting device. The transparent paper 8 is clamped by the clamping device to the upper part of the first elevator. The first elevator lifts the strip cigarette 9 and the transparent paper 8 together, so that the single transparent paper 8 forms a U-shaped package. When lifted to the highest position, the strip cigarette 9 with the transparent paper 8 is pushed to the right by the cigarette pushing plate 7. During the pushing process, the folding of the lower long sides at both ends of the strip cigarette transparent paper 8 and the folding of the front and rear short sides at both ends are gradually completed;

[0104] S2, another cigarette 9 pushed by the cigarette pushing plate 7 is gradually pushed to the right. When it is pushed to the top of the second lifter, the electric soldering iron mechanism 5 starts to seal the front and rear short sides and the lower long side of the transparent paper 8 of the end cigarette, and quickly completes the pre-sealing of the lower part of the end;

[0105] S3, after the pre-sealing is completed, the second lifter is lifted upward, and in the process of lifting, the folding and sealing process of the long edges on both ends of the transparent paper 8 of the cigarette strip is completed, and the packaging process of the transparent paper 8 is now completely completed.

[0106] In summary, a more specific embodiment of the present invention is:

[0107] Before using the improved transparent paper end preheat sealing device for cigarette packaging machines of the above-mentioned design structure, it is necessary to manufacture and install it as a backup.

[0108] The specific steps are:

[0109] like Figures 1 - 4 As shown, when in use, the detection device 2 is installed on the equipment base 6. When the cigarette pushing plate 7 is at the initial leftmost end, the detection device 2 cannot detect the end of the cigarette pushing plate, the solenoid valve connected to the telescopic device 3 will not be reversed, and the rodless chamber of the telescopic device 3 will not be introduced into the positive compressed air, so the preheat sealing device will not act;

[0110] When the first lifter lifts the cigarette strip 9 with transparent paper to the highest position, the cigarette pushing plate 7 starts to push the cigarette to the right. When the cigarette pushing plate 7 reaches the rightmost end, it will pause, that is, there will be a pause when the cigarette pushing plate 7 pushes the cigarette strip 9 into the second lifter. Then the second lifter will have a lifting action. When the detection device 2 detects that the end of the cigarette pushing plate 7 enters the cigarette pushing plate connecting seat 71, the detection device 2 immediately sends a solenoid valve reversing signal to the telescopic device 3. Compressed air is introduced into the rodless cavity of the telescopic device 3. The compressed air drives the telescopic rod 31 to extend, and then the telescopic rod 31 drives the connecting seat 71. The receiving frame 4 moves forward, and under the movement of the fixed frame 42 of the four-bar mechanism, it drives the heating rod 52 at the end of the electric soldering iron mechanism 5 to pass through the connecting groove 11 pre-opened on the folding plate 1 to pre-seal the front and rear short sides and the lower long side of the transparent paper 8 that has been folded, and the front and rear short sides and the lower long side of the end of the transparent paper 8 are sealed into a whole. In this way, when the second lifter lifts again, the pre-sealed whole will not produce relative sliding or dislocation, which will prevent the looseness and wrinkles of the cigarette strip 9, thereby increasing the flatness and consistency of the hot sealing of the end face of the cigarette strip, reducing the defective rate, and ensuring that the quality of the final product meets the requirements.

[0111] During the above-mentioned use process, the signal sent by the detection device 2 to the solenoid valve is basically equivalent to a pulse signal. That is, the preheating and sealing action of the telescopic device 3 is between 0.5 seconds and 1 second. Specifically, it depends on the time when the cigarette pushing plate 7 completely pushes the cigarette strip 9 into the second lifter. Also, it depends on the specific effect of the preheating and sealing to determine this pulse time. When the preheating and sealing effect is good, the pulse signal is shorter, and the cylinder telescopic action returns immediately. Since the telescopic device 3 is a single-acting cylinder, its return is completed by the acting force of the pressure spring it carries. If the preheating and sealing effect is not good, then the pulse signal is readjusted to make the preheating and sealing time of the cylinder slightly longer until the technological requirements of the preheating and sealing can be completed as required.

[0112] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An improved device for preheating and sealing the ends of transparent paper for cigarette strips in a packaging machine, comprising a folding plate (1) and a detection device (2) and a cigarette pushing mechanism that cooperates with the folding plate (1) and a detection device (2) to complete the work, characterized in that: Also includes: A telescopic device (3), the telescopic device (3) being arranged on a base (6) outside the connecting groove (11); A connecting frame (4), the connecting frame (4) is arranged between the telescopic device (3) and the connecting groove (11), and one end of the connecting frame (4) is connected to the telescopic rod (31) of the telescopic device (3); An electric soldering iron mechanism (5), one end of which is connected to the other end of the connecting frame (4); Wherein, the folding plate (1) is provided with a connection groove (11); the detection device (2) is signal-connected to the telescopic device (3); the detection device (2) is arranged on one side of the cigarette pushing mechanism, the cigarette pushing mechanism is arranged at the inlet end of the cigarette conveying mechanism of the packaging machine, and the cigarette pushing mechanism reciprocates under the drive of the driving device, and is used to push the cigarette to the area to be preheated and sealed for pre-heating and sealing; The detection device (2) is used to monitor the running track of the cigarette pushing plate (7).

2. The improved transparent paper end preheat sealing device for cigarette packing machine according to claim 1, characterized in that: The connection groove (11) is formed in an "eight" shape and is opened through one end of the folding plate (1), wherein the connection groove (11) is a rectangular hole; The cigarette pushing mechanism comprises a cigarette pushing plate (7), and the cigarette pushing plate (7) is slidably connected to a cigarette pushing plate connecting seat (71); A cigarette pushing working part is connected to the working end of the cigarette pushing plate (7), and the cigarette pushing working part is a concave plate-shaped body structure with a groove in the middle of the upper end.

3. The improved transparent paper end preheat sealing device for cigarette packing machine according to claim 1, characterized in that: The telescopic device (3) is fixedly connected or movably connected to a connection plate of the base (6), wherein the telescopic device (3) is a cylinder, and a solenoid valve is connected to the cylinder.

4. The improved transparent paper end preheat sealing device for cigarette packing machine according to claim 1, characterized in that: The connecting frame (4) comprises: Connecting seats (41), the connecting seats (41) are symmetrically arranged in pairs on the connecting plate of the base (6); A four-bar structure, the lower end of which is rotatably connected to a connecting seat (41).

5. The improved transparent paper end preheat sealing device for cigarette packing machine according to claim 4, characterized in that: The four-bar structure comprises: A fixing frame (42), one end of which is connected to the electric soldering iron mechanism (5); A first connecting shaft (43), the first connecting shaft (43) being rotatably connected between two connecting seats (41) close to the electric soldering iron mechanism (5); Two first connecting rods (44), the lower ends of the two first connecting rods (44) are respectively connected to the two ends of the first connecting shaft (43), and the upper ends of the two first connecting rods (44) are rotatably connected to the fixing frame (42); A second connecting shaft (45), the second connecting shaft (45) is rotatably connected between two connecting seats (41) close to the telescopic device (3); Two second connecting rods (46), the lower ends of the two second connecting rods (46) are respectively connected to the two ends of the second connecting shaft (45), and the upper ends of the two second connecting rods (46) are rotatably connected to the fixing frame (42); A rocker (47) is slidably connected between the two second connecting rods (46).

6. The improved transparent paper end preheat sealing device for cigarette packing machine according to claim 5, characterized in that: A sliding groove for connecting to a rocker (47) is formed through the middle section of the second connecting rod (46); The middle part of the rocker (47) is connected to the telescopic rod (31).

7. The improved transparent paper end preheat sealing device for cigarette packing machine according to claim 5, characterized in that: The fixing frame (42) is in a ladder-shaped structure as a whole, and comprises cross bars arranged opposite to each other and rotating rods symmetrically rotatably connected between the two cross bars, wherein the upper ends of the two first connecting rods (44) and the upper ends of the two second connecting rods (46) are respectively connected to the corresponding rotating rods.

8. The improved transparent paper end preheat sealing device for cigarette packing machine according to claim 1, characterized in that: The detection device (2) is a proximity switch; One end of the telescopic rod (31) is rotatably connected to the rocker (47) via a hemispherical component.

9. The improved transparent paper end preheat sealing device for cigarette packing machine according to claim 1, characterized in that: The electric soldering iron mechanism (5) comprises: A soldering iron body (51), one end of which is connected to a fixing frame (42); A heating rod (52), the heating rod (52) is connected to the other end of the soldering iron body (51); A temperature measuring platinum thermal resistor, which is arranged inside the soldering iron body (51); The heating rod (52) is connected to the other end of the soldering iron body (51) in an "eight" shape, and the heating rod (52) passes through the connecting groove (11) and contacts the transparent paper (8) of the cigarette to complete the heat sealing work.

10. A method for using an improved device for preheating and sealing the ends of transparent paper for cigarette cartons in a packaging machine, characterized in that: The method comprises the following steps: S1, after the cigarette strips (9) are packed by the upstream CT packaging machine, they are sent to the first lifter through the cigarette strip conveying channel. At this time, the transparent paper (8) and the pull wire are cut into a single transparent paper with a pull wire by the transparent paper (8) and the pull wire conveying and cutting device. The transparent paper (8) is clamped and sent to the top of the first lifter by the clamping device. The first lifter lifts the cigarette strips (9) and the transparent paper (8) together, so that the single transparent paper (8) forms a U-shaped package. When it is lifted to the highest position, the cigarette strips (9) with the transparent paper (8) are pushed to the right by the cigarette pushing plate (7). In the process of pushing, the lower long sides of the two ends of the cigarette strip transparent paper (8) and the front and rear short sides of the two ends are gradually folded; S2, another cigarette (9) pushed by the cigarette pushing plate (7) is gradually pushed to the right, and when it is pushed to the top of the second lifter, the electric soldering iron mechanism (5) starts to seal the front and rear short sides and the lower long side of the transparent paper (8) of the end cigarette, and quickly completes the pre-sealing of the lower part of the end; S3, after the pre-sealing is completed, the second lifter is lifted upwards, and in the process of lifting, the folding and sealing process of the long edges on both ends of the cigarette transparent paper (8) is completed, and the packaging process of the transparent paper (8) is now completely completed.

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