Quantitative multi-uniform glue spraying system

Abstract

This utility model discloses a quantitative multi-element uniform adhesive spraying system, including a metering adhesive dispensing device and a multi-element composite nozzle. The bottom surface of the multi-element composite nozzle has several sets of adhesive spraying holes along its length, each set of holes having its own adhesive inlet. The number of metering adhesive dispensing devices is the same as the number of sets of adhesive spraying holes, and each set of metering adhesive dispensing devices is connected to one adhesive inlet of a corresponding set of holes via a spraying tube. This utility model has a scientific principle and simple structure. It uses a single multi-element composite nozzle to achieve consistency in the time of adhesive spraying. Multiple sets of non-interconnected adhesive spraying holes are opened within the multi-element composite nozzle, with a 0.1mm gap between the adhesive strips sprayed from adjacent holes, ensuring the quality of roll splicing and lamination. When adjusting the alignment with the forming paper, only the multi-element composite nozzle needs to be adjusted to uniformly adjust the position of the different adhesive strips, making operation convenient and saving time.

Description

Technical Field

[0001] This utility model belongs to the field of electronic cigarette technology, specifically relating to a quantitative multi-element uniform adhesive spraying system. Background Technology

[0002] Heated tobacco products (HNB) are a new type of tobacco product that heats tobacco using an electronic device instead of burning it, significantly reducing the release of harmful substances. HNB cigarettes typically use a forming paper to bond the end cap, smoke-generating section, small hollow section, large hollow section, and filter section together. Currently, the surface of the forming paper is coated with adhesive using multiple glue guns spraying glue in staggered segments. This method has the following problems: 1) Due to inconsistent spraying times for each glue line, the bonding effect of each glue line is inconsistent, affecting the quality of the bonding process; 2) The glue lines sprayed from multiple glue guns may contact or overlap at the edges (a 0.1mm gap is required), affecting the quality of the bonding process; 3) Adjusting the glue line width requires adjusting each glue gun individually, which is tedious, time-consuming, and difficult. Utility Model Content

[0003] In order to solve the above-mentioned technical problems in the prior art, this utility model provides a quantitative multi-element uniform glue spraying system that can simultaneously spray multiple glue lines onto the surface of the formed paper, ensure the quality of roll splicing and bonding, and facilitate the adjustment of glue line width.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a quantitative multi-element uniform glue spraying system, including a metering glue dispensing device and a multi-element composite nozzle. The bottom surface of the multi-element composite nozzle has several sets of glue spraying holes along the length direction. Each set of glue spraying holes has a separate glue inlet. The number of metering glue dispensing devices is the same as the number of glue spraying hole sets. Each set of metering glue dispensing devices is connected to one glue inlet of a set of glue spraying holes through a glue spraying tube. The distance between two adjacent glue spraying holes in the same set of glue spraying holes is m, and the minimum distance between any two adjacent sets of glue spraying holes is n, where m is less than n.

[0005] Each metering and dispensing device includes a servo motor, a metering pump, and a glue tank. The servo motor is connected to the power input shaft of the metering pump in sequence through a reducer and a coupling. The bottom of the glue tank is provided with a glue discharge port, which is connected to the inlet of the metering pump through a glue delivery pipe. The outlet of the metering pump is connected to a glue inlet through the glue spraying pipe.

[0006] The multi-component composite nozzle includes a nozzle body with an overall rectangular shape. The length of the nozzle body extends along the left-right direction, and the bottom surface of the nozzle body has an arc-shaped structure along the front-back direction. A first, through-hole (through both sides) is opened inside the upper side of the nozzle body. Below the first injection hole, a second and a third injection hole are also opened inside the nozzle body. Both the second and third injection holes are blind holes. The opening of the second injection hole is located on the left side of the nozzle body, and the opening of the third injection hole is located on the right side of the nozzle body. The number of injection holes is three. Three sets of glue spraying holes are evenly arranged along the length of the nozzle body. The outlets of the three sets of glue spraying holes are all located on the bottom surface of the nozzle body. The inlet of the glue spraying hole on the left is connected to the second glue injection hole, the inlet of the glue spraying hole in the middle is connected to the first glue injection hole, and the inlet of the glue spraying hole on the right is connected to the third glue injection hole. The left and right ends of the first glue injection hole are the glue inlets of the middle set of glue spraying holes, the left end of the second glue injection hole is the glue inlet of the left set of glue spraying holes, and the right end of the third glue injection hole is the glue inlet of the right set of glue spraying holes.

[0007] The glue bucket is equipped with a glue-adding pipe on the upper side, and a glue-adding valve on the glue-adding pipe. The glue discharge port at the bottom of the glue bucket is connected to a glue discharge pipe, and a glue discharge valve is installed on the glue discharge pipe. A glue delivery valve is installed on the glue delivery pipe.

[0008] By adopting the above technical solution, this utility model has the following beneficial effects: 1) A multi-element composite nozzle is used, with multiple sets of spray holes inside. The outlets of these spray holes are arranged in a straight line along the bottom surface of the nozzle body. The middle set of spray holes has more holes and requires a larger spray width. Therefore, both ends of the first spray hole are glue inlets, ensuring that the amount of glue sprayed from each spray hole is basically the same.

[0009] 2) The number of metering and dispensing devices in this invention is the same as the number of spray nozzle groups in the multi-element composite nozzle. Each group of spray nozzles is internally separate, making it suitable for spraying different adhesives and adhesive strips of varying thicknesses. The spray nozzle tube of each metering and dispensing device is directly connected to the injection hole on the nozzle body. The spray nozzle tube supplying adhesive to the middle group of spray nozzles uses a multi-way pipe (T-connector) to connect two spray nozzle branch pipes, which are respectively connected to the left and right ends of the first injection hole.

[0010] 3) Each set of spray nozzles includes a different number of tapered holes, wider at the bottom and narrower at the top, spaced at intervals on the left and right. During the spraying (coating) process, a uniform adhesive strip is formed on the forming paper. m is less than n, which ensures that there is an interval of about 0.1mm between the adhesive strips sprayed from two adjacent sets of spray nozzles, and that the adhesive sprayed from each spray nozzle in the same set of spray nozzles is connected to each other.

[0011] 4) The glue tank is made of sanitary-grade stainless steel to ensure the glue is unaffected by the environment. It is equipped with glue dispensing and discharging hoses. A high-precision metering pump is used. The amount of glue dispensed is adjusted by controlling the speed of the servo motor. The appropriate metering pump model must be selected based on the amount of glue dispensed. A single-inlet, single-outlet metering pump can be selected as needed, with each outlet connected to a single glue dispensing port.

[0012] 5) During the glue application process, the coupler can collect the operating speed signal of the equipment (forming paper), or the communication system can directly collect the operating speed signal and transmit it to the PLC controller. The PLC controller sends a command to the servo motor, and the servo motor drives the metering pump to match the operating speed of the equipment (forming paper). The two are correlated to achieve a constant glue application amount at different operating speeds, thereby ensuring the uniformity of the glue strip application.

[0013] In summary, this utility model has a scientific principle and simple structure. It uses a multi-component composite nozzle to achieve consistency in the spraying time of the adhesive. The multi-component composite nozzle refers to an integrated nozzle with multiple sets of non-interconnected spray holes. The number of spray holes in each set can be set according to requirements. There is a 0.1mm gap between the adhesive strips sprayed from two adjacent sets of spray holes to ensure the quality of the roll-to-roll bonding. When adjusting the alignment with the adhesive spraying of the forming paper, only the position of the different sprayed adhesive strips needs to be adjusted as a whole by adjusting the multi-component composite nozzle, which is convenient to operate and saves time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the multi-element composite nozzle in this utility model; Figure 3 for Figure 2 A plan view from below; Figure 4 for Figure 3 Sectional view of AA; Figure 5 for Figure 4 The left view. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] like Figures 1-5As shown, the quantitative multi-element uniform glue spraying system of this utility model includes a metering glue dispensing device 1 and a multi-element composite nozzle 2. The bottom surface of the multi-element composite nozzle 2 has several sets of glue spraying holes 3 along the length direction. Each set of glue spraying holes 3 has a separate glue inlet. The number of metering glue dispensing devices 1 is the same as the number of sets of glue spraying holes 3. Each set of metering glue dispensing devices 1 is connected to one glue inlet of a set of glue spraying holes 3 through a glue spraying tube 4. The distance between two adjacent glue spraying holes in the same set of glue spraying holes is m. The minimum distance between any two sets of glue spraying holes 3 is n, where m is less than n.

[0017] Each metering and dispensing device 1 includes a servo motor 5, a metering pump 6, and a glue tank 7. The servo motor 5 is connected to the power input shaft of the metering pump 6 in sequence through a reducer 8 and a coupling. The bottom of the glue tank 7 is provided with a glue discharge port, which is connected to the inlet of the metering pump 6 through a glue delivery pipe 9. The outlet of the metering pump 6 is connected to one of the glue inlets of the multi-component nozzle 2 through the glue spraying pipe 4.

[0018] The multi-component composite nozzle 2 includes a nozzle body 10 with an overall rectangular shape. The length of the nozzle body 10 extends along the left-right direction, and the bottom surface of the nozzle body 10 has an arc-shaped structure along the front-back direction. A first glue injection hole 11, which is open from left to right, is opened inside the upper side of the nozzle body 10. A second glue injection hole 12 and a third glue injection hole 13 are opened below the first glue injection hole 11 inside the nozzle body 10. Both the second glue injection hole 12 and the third glue injection hole 13 are blind holes. The opening of the second glue injection hole 12 is located on the left side of the nozzle body 10, and the opening of the third glue injection hole 13 is located on the right side of the nozzle body 10. The three sets of glue injection holes... There are three groups of nozzles 3, which are evenly arranged along the length of the nozzle body 10. The outlets of the three groups of nozzles 3 are all located on the bottom surface of the nozzle body 10. The inlet of the left group of nozzles 3 is connected to the second injection hole 12, the inlet of the middle group of nozzles 3 is connected to the first injection hole 11, and the inlet of the right group of nozzles 3 is connected to the third injection hole 13. The left and right ends of the first injection hole 11 are the inlets of the middle group of nozzles 3, the left end of the second injection hole 12 is the inlet of the left group of nozzles 3, and the right end of the third injection hole 13 is the inlet of the right group of nozzles 3.

[0019] The glue tank 7 has a glue-adding pipe 14 on its upper side, a glue-adding valve 15 on the glue-adding pipe 14, a glue-discharging pipe 16 connected to the glue-discharging port at the bottom of the glue tank 7, a glue-discharging valve 17 on the glue-discharging pipe 16, and a glue-discharging valve 18 on the glue-transferring pipe 9.

[0020] The working principle and beneficial effects of this utility model are as follows: 1) A multi-element composite nozzle 2 is used, with multiple sets of adhesive spraying holes 3 inside. The outlets of the multiple sets of adhesive spraying holes 3 are arranged in a straight line on the bottom surface of the nozzle body 10. The middle set of adhesive spraying holes 3 has more holes and a larger spraying width. Therefore, the two ends of the first adhesive injection hole 11 are both adhesive inlets, so that the amount of adhesive sprayed from each adhesive spraying hole 3 is basically the same. A gap of 0.1mm is reserved between the adhesive lines sprayed onto the forming paper by two adjacent sets of adhesive spraying holes 3.

[0021] 2) The number of metering glue dispensing devices 1 in this utility model is the same as the number of glue spraying holes 3 in the multi-element composite nozzle 2. The glue spraying holes 3 in each group are not interconnected, which is suitable for spraying different glue liquids and glue strips of different thicknesses (of course, the same glue liquid can also be sprayed). The glue spraying pipes 4 of each group of metering glue dispensing devices 1 are directly connected to the glue injection holes on the nozzle body 10. Among them, the glue spraying pipes 4 that supply glue to the middle group of glue spraying holes 3 are connected by a multi-port pipe (three-way pipe) to two glue spraying branch pipes 19, which are respectively connected to the left and right ends of the first glue injection hole 11.

[0022] 3) Each set of adhesive spray holes 3 includes a different number of tapered holes with a coarser bottom and a thinner top, spaced apart on the left and right sides, so that a uniform adhesive strip is formed on the forming paper during the adhesive spraying (coating) process.

[0023] 4) The glue tank 7 is made of sanitary-grade stainless steel to ensure that the glue is not affected by the environment. It is equipped with a glue dispensing pipe 14 and a glue discharging pipe 16. A high-precision metering pump 6 is used. The amount of glue dispensed is adjusted by controlling the speed of the servo motor 5. The appropriate model of metering pump 6 needs to be selected according to the amount of glue dispensed. A single inlet and single outlet metering pump 6 can be selected, or a single inlet and multiple outlet metering pump 6 can be selected, with each outlet corresponding to a single glue dispensing hole.

[0024] 5) During the glue application process, the coupler can collect the operating speed signal of the equipment (forming paper), or the communication system can directly collect the operating speed signal and transmit it to the PLC controller. The PLC controller sends a command to the servo motor 5, and the servo motor 5 drives the metering pump 6 to match the operating speed of the equipment (forming paper). The two are interconnected to achieve a constant glue application amount at different operating speeds, thereby ensuring the uniformity of the glue strip.

[0025] In this invention, the adhesive spraying holes 2 in the composite nozzle 1 are divided into three groups: the left group includes one adhesive spraying hole 2, the right group includes two adhesive spraying holes, and the rest are the middle group.

[0026] In this invention, the servo motor 5, reducer 8, coupling, metering pump 6, various valves, and pipe joints are all existing technologies and are commercially available; their structure and working principle will not be described in detail. Furthermore, the automatic control of the servo motor 5's speed does not involve any new computer program.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A quantitative multi-element uniform adhesive spraying system, characterized in that: It includes a metering and dispensing device and a multi-element composite nozzle. The bottom surface of the multi-element composite nozzle has several sets of dispensing holes along its length. Each set of dispensing holes has its own inlet. The number of metering and dispensing devices is the same as the number of dispensing hole sets. Each set of metering and dispensing devices is connected to one inlet of a set of dispensing holes through a dispensing tube. The distance between two adjacent dispensing holes in the same set is m. The minimum distance between any two adjacent sets of dispensing holes is n, where m is less than n.

2. The quantitative multi-element uniform spraying system according to claim 1, characterized in that: Each metering and dispensing device includes a servo motor, a metering pump, and a glue tank. The servo motor is connected to the power input shaft of the metering pump in sequence through a reducer and a coupling. The bottom of the glue tank is provided with a glue discharge port, which is connected to the inlet of the metering pump through a glue delivery pipe. The outlet of the metering pump is connected to a glue inlet through the glue spraying pipe.

3. The quantitative multi-uniform glue spraying system according to claim 2, wherein: The multi-component composite nozzle includes a nozzle body with an overall rectangular shape. The length of the nozzle body extends along the left-right direction, and the bottom surface of the nozzle body has an arc-shaped structure along the front-back direction. A first, through-hole (through both sides) is opened inside the upper side of the nozzle body. Below the first injection hole, a second and a third injection hole are also opened inside the nozzle body. Both the second and third injection holes are blind holes. The opening of the second injection hole is located on the left side of the nozzle body, and the opening of the third injection hole is located on the right side of the nozzle body. The number of injection holes is three. Three sets of glue spraying holes are evenly arranged along the length of the nozzle body. The outlets of the three sets of glue spraying holes are all located on the bottom surface of the nozzle body. The inlet of the glue spraying hole on the left is connected to the second glue injection hole, the inlet of the glue spraying hole in the middle is connected to the first glue injection hole, and the inlet of the glue spraying hole on the right is connected to the third glue injection hole. The left and right ends of the first glue injection hole are the glue inlets of the middle set of glue spraying holes, the left end of the second glue injection hole is the glue inlet of the left set of glue spraying holes, and the right end of the third glue injection hole is the glue inlet of the right set of glue spraying holes.

4. The quantitative multi-element uniform spraying system according to claim 2, characterized in that: The glue bucket is equipped with a glue-adding pipe on the upper side, and a glue-adding valve on the glue-adding pipe. The glue discharge port at the bottom of the glue bucket is connected to a glue discharge pipe, and a glue discharge valve is installed on the glue discharge pipe. A glue delivery valve is installed on the glue delivery pipe.

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