A multi-glue-path spray gun device for a water-based paper glue spraying system and a cigarette making machine

Abstract

The application provides a multi-glue-path spraying gun device and a cigarette making machine for tipping paper glue spraying system, and relates to the technical field of cigarette production and manufacturing. The first glue supply pipeline and the glue supply ring are one-to-one corresponding, and each is provided with two or more; the middle shaft of the second glue supply assembly is inserted into the rotating channel, so that the second glue supply pipeline and the glue supply ring are one-to-one corresponding and conductive. Since the glue supply ring and the middle shaft form an annular cavity, the inside is filled with glue along the circumferential direction, so no matter the second glue supply assembly is rotated to any angle, it can normally supply glue. The first glue supply assembly or the second glue supply assembly is used for supplying glue to the spraying gun. The glue can flow from the first glue supply assembly to the second glue supply assembly, or from the second glue supply assembly to the first glue supply assembly. The application forms a glue supply channel through the first glue supply pipeline, the glue supply ring and the second glue supply pipeline. Different glue supply channels are used for supplying glue to different spraying guns. The spraying pressure of each spraying gun can be controlled individually, so that the spraying head forms a more uniform spraying.

Description

Technical Field

[0001] This invention relates to the field of cigarette manufacturing technology, and more particularly to a multi-path spray gun device for a tipping paper spraying system. Furthermore, this invention also relates to a winding and splicing machine. Background Technology

[0002] Tipping paper is a type of cigarette packaging material that wraps around the filter tip of a filter cigarette. It is usually cork-colored or opaque white and is used to attach the filter stick to the end of the cigarette. A typical cigarette has four visible parts: the cigarette paper at the front, the tobacco wrapped in the cigarette paper, the tipping paper at the back, and the filter stick wrapped in the tipping paper.

[0003] Tobacco production is mainly divided into four parts: 1. Shredding (tobacco shreds); 2. Forming machine (filter rod), which is the white part of the cigarette mouthpiece; 3. Rolling machine (rolling the tobacco shreds and filter rod together); 4. Packaging machine (packaging the produced individual cigarettes).

[0004] The gluing device is a major component of the winding and splicing machine. It is used to apply glue to the tipping paper. The glued tipping paper is used to connect the filter rod and the cigarette. Each end of the filter rod is connected to a cigarette, forming a double-length cigarette.

[0005] The adhesive application device has multiple spray guns and multiple spray points. The spray points are located on the spray guns and are arranged along the length of the cigarette. Traditional adhesive supply methods involve supplying adhesive to different spray guns simultaneously through a single supply line. Because the distance between each spray point and the supply line varies, the adhesive pressure at each spray point differs; the pressure decreases with increasing distance from the supply line. Traditional methods cannot guarantee uniform adhesive distribution from all spray points. If the spray head furthest from the supply line meets the spraying standard, the nearest spray head may spray too much, and vice versa.

[0006] For those skilled in the art, how to achieve a more uniform spray from each nozzle is a technical problem that needs to be solved. Summary of the Invention

[0007] This invention provides a multi-path spray gun device for a cork paper spraying system, which can individually control the spray pressure of each spray gun, thereby enabling the nozzles to form a more uniform coating. The specific solution is as follows:

[0008] A multi-path spray gun device for a cork paper spraying system, comprising:

[0009] The first glue supply assembly is provided with at least two first glue supply pipes, at least two glue supply rings and a rotating channel, and the first glue supply pipes and the glue supply rings correspond one-to-one.

[0010] The second glue supply assembly includes a central shaft that can be inserted into the rotating channel and rotate about an axis relative to the rotating channel; at least two second glue supply pipes that can supply glue along the axis are provided inside the central shaft, the ports of the second glue supply pipes are opened on the side wall of the central shaft, and the glue supply ring is connected to the second glue supply pipes one by one to supply glue liquid flow.

[0011] The first glue supply assembly or the second glue supply assembly is used to supply glue to the spray gun; the different glue supply channels formed by the first glue supply pipeline, the glue supply ring, and the second glue supply pipeline are used to supply glue to different spray guns.

[0012] Optionally, a plurality of sealing rings are provided between the central shaft and the rotating channel, and an annular groove is provided on the outer surface of the central shaft and / or the inner surface of the rotating channel;

[0013] The central shaft, the rotating channel, the two adjacent sealing rings, and the annular groove together form the glue supply ring.

[0014] Optionally, it also includes a flow-draining assembly, which has a flow-draining pipe inside. The spray gun is installed on the flow-draining assembly, and the flow-draining pipe is used to circulate adhesive between the second adhesive supply assembly and the spray gun.

[0015] Optionally, the drainage conduit includes a first branch extending axially and a second branch extending radially, the first branch and the second branch intersecting in a cross shape.

[0016] Optionally, it also includes a support base, on which the second glue supply assembly and the drainage assembly are mounted, and the support base is capable of driving the second glue supply assembly and the drainage assembly to rotate about an axial direction relative to the first glue supply assembly.

[0017] Optionally, a guide structure is provided on the support base, and the second glue supply assembly and the drainage assembly are slidably mounted on the support base. The guide structure can guide the second glue supply assembly and the drainage assembly to move axially.

[0018] The support base is provided with an axially extending slotted hole, and the drainage assembly is fixed to the support base by bolts. The bolts can pass through the slotted hole to adjust the position of the second glue supply assembly axially.

[0019] The width of the glue supply ring is greater than the diameter of the opening of the second glue supply pipeline.

[0020] Optionally, three of the first glue supply line, the glue supply ring, and the second glue supply line are provided, and five of the spray guns are provided. The spray guns at both ends are supplied with glue by one of the second glue supply lines, and the three spray guns in the middle are supplied with glue by the same second glue supply line.

[0021] The central spray gun has two spray points, while the other spray guns each have one spray point.

[0022] Optionally, the second adhesive supply assembly is provided with a flange, and a branch pipe is provided inside the flange, the branch pipe being connected to the second adhesive supply pipe.

[0023] Optionally, the contact point between the scraper head of the spray gun and the tipping paper is a smooth curved surface.

[0024] The present invention also provides a splicing machine, including the multi-path spray gun device for a cork paper spraying system as described in any of the above claims.

[0025] Compared to existing technologies, this invention provides a multi-path spray gun device for a cork paper spraying system. A first glue supply line and a glue supply ring are arranged in a one-to-one correspondence, with two or more of each. The central shaft of the second glue supply assembly is inserted into a rotating channel, allowing the second glue supply line and the glue supply ring to be connected for glue flow. Since the glue supply ring and the central shaft form an annular cavity filled with glue along the circumference, glue can be supplied normally regardless of the rotation angle of the second glue supply assembly. Either the first or second glue supply assembly is used to supply glue to the spray gun; that is, the glue can flow from the first glue supply assembly to the second glue supply assembly, or vice versa. Because this invention forms glue supply channels through the first glue supply line, the glue supply ring, and the second glue supply line, different glue supply channels supply glue to different spray guns, and the spray pressure of each spray gun can be controlled individually, resulting in a more uniform spray from the nozzle. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 An isometric view of one embodiment of the multi-path spray gun device for a cork paper spraying system provided by the present invention;

[0028] Figure 2Another isometric view of an embodiment of the multi-path spray gun device for a cork paper spraying system provided by the present invention;

[0029] Figure 3 An isometric view of the assembly of the second glue supply component and the drainage component.

[0030] Figure 4 Another isometric view of the assembly of the second glue supply assembly and the drainage assembly;

[0031] Figure 5 An isometric view of the second adhesive supply assembly;

[0032] Figure 6 Another isometric view of the second adhesive supply assembly;

[0033] Figure 7 An isometric view of the flow-generating component;

[0034] Figure 8 Another perspective isometric view of the traffic diversion component;

[0035] Figure 9 Perspective view of the internal structure of the first adhesive supply assembly;

[0036] Figure 10 Perspective view of the internal structure of the second adhesive supply assembly;

[0037] Figure 11 A perspective view of the internal structure of the drainage component;

[0038] Figure 12 Perspective view of the internal structure of the supporting base;

[0039] Figure 13 This is a schematic diagram of a three-way glue supply system;

[0040] Figure 14 This is a side view diagram showing the scraper and tipping paper in action.

[0041] The image includes:

[0042] First glue supply assembly 1, first glue supply pipeline 11, sealing ring 12, rotating channel 13, annular groove 14, second glue supply assembly 2, central shaft 21, second glue supply pipeline 211, flange 22, branch pipeline 221, drainage assembly 3, drainage pipeline 31, first branch pipe 311, second branch pipe 312, support base 4, guide structure 41, waist-shaped hole 42, scraper head 5. Detailed Implementation

[0043] The core of this invention is to provide a multi-channel spray gun device for a cork paper spraying system. Different glue supply channels are used to supply glue to different spray guns, and the spraying pressure of each spray gun can be controlled individually, thereby enabling the nozzle to form a more uniform spray.

[0044] To enable those skilled in the art to better understand the technical solution of the present invention, the multi-path spray gun device and winding and splicing machine for a cork paper spraying system of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Combination Figures 1 to 4 As shown, the present invention provides a multi-path spray gun device for a cork paper spraying system, including a first glue supply assembly 1 and a second glue supply assembly 2, etc., combined with Figure 9 As shown, the first glue supply assembly 1 is a block-shaped structure with several channels and cavities inside, allowing liquid to flow. The first glue supply assembly 1 contains at least two first glue supply pipes 11, at least two glue supply rings, and a rotating channel 13. The first glue supply pipes 11 and glue supply rings correspond one-to-one. The length direction of the rotating channel 13 is perpendicular to the length direction of the first glue supply pipes 11. Figure 9 The rotating channel 13 extends laterally, and the first glue supply line 11 extends vertically. The rotating channel 13 can be a structure with both ends open, or a structure with only one end open to the outside and the other end closed. The rotating channel 13 is a cylindrical cavity structure. One first glue supply line 11 is provided with a glue supply ring to form a flow channel. The glue can flow between the first glue supply line 11 and the glue supply ring. Each flow channel is independent of the others, and the glue in different flow channels is isolated from each other.

[0046] Combination Figure 5 , Figure 6 , Figure 10 The second adhesive supply assembly 2 includes a central shaft 21, which is a cylindrical structure. The central shaft 21 can be inserted into the rotating channel 13 and can rotate relative to the rotating channel 13 around the axis direction, which is also the length direction of the rotating channel 13.

[0047] At least two second glue supply pipes 211 capable of supplying glue along the axial direction are provided inside the central shaft 21. The main body of the second glue supply pipe 211 extends along the length of the central shaft 21. The port of the second glue supply pipe 211 is opened on the side wall of the central shaft 21, that is, a section of radially extending pipe is provided at the end of the second glue supply pipe 211, extending to the side wall of the central shaft 21 and communicating with the outside. Figure 5 , Figure 6As shown, the ports of different second glue supply lines 211 are located at different axial positions on the central axis 21, and their center angles are also different. The different axial positions of the different glue supply rings ensure that each glue supply ring corresponds to only one port of the second glue supply line 211 for glue supply.

[0048] Each glue supply ring is connected to a second glue supply line 211 to supply glue liquid. That is, each glue supply ring corresponds to one second glue supply line 211, and the glue liquid in different second glue supply lines 211 is independent of each other. One first glue supply line 11, one glue supply ring, and one second glue supply line 211 form a glue supply channel in which glue liquid can flow. The multi-glue spray gun device for the cork paper spraying system of the present invention has at least two glue supply channels. In the embodiment shown in the figure, three glue supply channels are provided, and each glue supply channel supplies glue liquid independently.

[0049] The first glue supply component 1 or the second glue supply component 2 is used to supply glue to the spray gun. That is, the glue can flow out from the first glue supply component 1 to supply glue to the spray gun, or it can flow out from the second glue supply component 21 to supply glue to the spray gun. In the embodiment shown in the accompanying drawings of the present invention, the structure is that the second glue supply component 2 supplies glue to the spray gun. That is, the glue flows in from the first glue supply component 1 and flows to the second glue supply component 2, and flows out from the second glue supply component 2 and flows into the spray gun.

[0050] Different glue supply channels formed by the first glue supply line 11, the glue supply ring, and the second glue supply line 211 are used to supply glue to different spray guns. Each glue supply channel is equipped with an independent pressure regulating device, which can independently adjust the glue pressure provided by each glue supply channel. Compared with the traditional glue supply method with only one channel, the present invention provides more precise adjustment of the pressure of the glue sprayed from each spray gun, thereby making the nozzle form a more uniform spray.

[0051] Based on the above scheme, combined with Figure 9 In this invention, a plurality of sealing rings 12 are provided between the central shaft 21 and the rotating channel 13. The inner ring of the sealing ring 12 contacts the outer surface of the central shaft 21, and the outer ring of the sealing ring 12 contacts the inner surface of the rotating channel 13, thereby forming a good sealing effect through the sealing rings 12.

[0052] An annular groove 14 is provided on the outer surface of the central shaft 21 and / or the inner surface of the rotating channel 13. That is, the annular groove 14 can be located on either the outer surface of the central shaft 21 or the inner surface of the rotating channel 13, or it can be partially located on the outer surface of the central shaft 21 and partially on the inner surface of the rotating channel 13. The central shaft 21, the rotating channel 13, two adjacent sealing rings 12, and the annular groove together form a glue-supplying ring. Figure 9In the embodiment shown in the accompanying drawings of this invention, an annular groove 14 is provided only on the inner surface of the rotating channel 13, forming three glue supply rings and four sealing rings 12, with adjacent glue supply rings sharing one sealing ring 12. By providing the annular groove 14, the volume of glue that can be contained can be increased, allowing the glue supply rings to hold more glue, and enabling the glue to flow more smoothly to all positions around the circumference.

[0053] It should be noted that the central shaft 21 of the present invention can rotate relative to the rotating channel 13. No matter what angle it rotates to, the opening of the second glue supply pipe 211 provided on the side wall of the central shaft 21 is always connected with the glue supply ring to ensure smooth glue supply.

[0054] Combination Figure 3 , Figure 4 , Figure 7 , Figure 8 , Figure 11 The invention also includes a flow guiding component 3, which is fixedly connected to the second glue supply component 2. A flow guiding pipe 31 is provided within the flow guiding component 3, and the spray gun is mounted on the flow guiding component 3, which provides support for the spray gun. The flow guiding pipe 31 is used to circulate glue between the second glue supply component 2 and the spray gun, and the flow guiding component 3 provides a conduit to supply the glue delivered by the second glue supply component 2 to the spray gun, causing the spray gun to spray the glue.

[0055] Furthermore, the drainage component 3 of this invention is a solid structure, with several channels drilled and machined on it to form a drainage pipe 31. The drainage pipe 31 includes a first branch pipe 311 extending axially and a second branch pipe 312 extending radially, with the first branch pipe 311 and the second branch pipe 312 intersecting in a cross shape. The first branch pipe 311 and the second branch pipe 312 intersect perpendicularly to each other. The cross-shaped design of the first branch pipe 311 and the second branch pipe 312 can reduce water hammer phenomenon and shift the pressure drop point to the end of the first branch pipe 311 and the end of the second branch pipe 312. No pressure drop will occur at the point where the adhesive changes direction at the cross-shaped intersection.

[0056] Combination Figure 1 , Figure 2 , Figure 12 The invention also includes a support base 4, a second adhesive supply assembly 2 and a drainage assembly 3 mounted on the support base 4, and the support base 4 capable of driving the second adhesive supply assembly 2 and the drainage assembly 3 to rotate axially relative to the first adhesive supply assembly 1. Figure 1 The right end of the support base 4 is mounted on the rotating mechanism, and the left end of the support base 4 is connected to the second glue supply assembly 2, which enables the second glue supply assembly 2 to rotate relative to the first glue supply assembly 1.

[0057] The specific shape of the support base 4 is not limited in this invention. In the embodiment shown in the accompanying drawings, the support base 4 includes a cylindrical annular structure and an arc-shaped structure. An opening for spraying adhesive is provided on the side wall of the cylindrical structure. The spray gun sprays adhesive from this opening, and the scraper head 5 provided here scrapes the adhesive.

[0058] A guide structure 41 is provided on the support base 4. The guide structure 41 can achieve axial guidance, that is... Figure 1 The direction indicated by the bidirectional arrow. The second glue supply assembly 2 and the drainage assembly 3 are slidably mounted on the support base 4, and the guide structure 41 can guide the second glue supply assembly 2 and the drainage assembly 3 to move axially.

[0059] Combination Figure 2 The support base 4 has an axially extending oblong hole 42 that is radially through but has a certain length in the axial direction. The second glue supply component 2 and the drainage component 3 are fixed relative to each other. The drainage component 3 is fixed to the support base 4 by bolts. The bolts pass through the oblong hole 42 and are tightened into the threaded holes on the drainage component 3 to achieve fixation. When it is necessary to adjust the axial position, the bolts can pass through the oblong hole 42 to adjust the axial position of the second glue supply component 2, that is, loosen the bolts and adjust the relative fixation of the drainage component 3. After adjustment, tighten them again to fix it. This structural design enables error adjustment.

[0060] The width of the glue supply ring is greater than the diameter of the opening of the second glue supply pipe 211, that is, the axial dimension of the glue supply ring is greater than the diameter of the opening of the second glue supply pipe 211. When the second glue supply assembly 2 changes position slightly in the axial direction, the opening of the second glue supply pipe 211 is always connected to the glue supply ring.

[0061] Based on any of the above technical solutions and their combinations, the present invention provides a specific embodiment, in conjunction with... Figure 13 As shown, three of each of the first glue supply line 11, glue supply ring, and second glue supply line 211 are provided, forming a total of three glue supply channels. Five spray guns are provided; the spray guns at both ends are supplied with glue by one second glue supply line 211, while the three spray guns in the middle are supplied with glue by the same second glue supply line 211. The two spray guns at both ends independently control the glue pressure, while the three spray guns in the middle share a single glue supply channel. The central spray gun has two spray points, while the other spray guns each have one spray point. This design is deemed reasonable after extensive experimentation and data collection from the production site.

[0062] Specifically, a flange 22 is provided in the second glue supply assembly 2, which can be used to fix the flow guide assembly 3 relative to each other. The outer diameter of the flange 22 is larger than the outer diameter of the central shaft 21, and the flange 22 and the central shaft 21 are fixed relative to each other; combined with Figure 10A branch pipe 221 is provided inside the flange 22. The branch pipe 221 includes a channel extending radially and a channel extending axially. The branch pipe 221 is connected to the second glue supply pipe 211, and the branch pipe 221 and the second glue supply pipe 211 intersect perpendicularly in an L-shape to achieve connection. By setting the branch pipe 221, the glue liquid in the branch pipe 221 is diverted.

[0063] Each drainage pipe 31 connects to a branch pipe 221 or a second glue supply pipe 211. By setting up the branch pipe 221, the glue in one path is split, so that the glue in the second glue supply pipe 211 can flow to different spray guns.

[0064] The contact point between the scraper head 5 of the spray gun and the tipping paper is a smooth curved surface, combined with... Figure 14 Where A represents tipping paper, the part of the scraper head 5 that contacts the tipping paper does not have any sharp protrusions; for example, the part of the scraper head that contacts the tipping paper is teardrop-shaped. Traditional scrapers cut the tipping paper, and while applying glue, they lose some tipping paper, thus changing the glue penetration rate of the tipping paper. This type of scraper head solves this problem.

[0065] The present invention also provides a splicing machine, including the multi-path spray gun device for the cork paper spraying system described above. The splicing machine can achieve the above-mentioned technical effects. For other parts of the splicing machine, please refer to the prior art. The present invention will not be described in detail here.

[0066] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-path spray gun device for a cork paper spraying system, characterized in that, include: The first glue supply assembly (1) is provided with at least two first glue supply pipelines (11), at least two glue supply rings and a rotating channel (13), and the first glue supply pipelines (11) and the glue supply rings correspond one to one; The second glue supply assembly (2) includes a central shaft (21) which can be inserted into the rotating channel (13) and rotate about the axis relative to the rotating channel (13); at least two second glue supply pipes (211) capable of supplying glue along the axis are provided inside the central shaft (21), the ports of the second glue supply pipes (211) are opened on the side wall of the central shaft (21), and the glue supply ring is connected to the second glue supply pipes (211) one by one to supply glue liquid flow; The first glue supply assembly (1) is used to supply glue to the spray gun; different glue supply channels formed by the first glue supply pipeline (11), the glue supply ring, and the second glue supply pipeline (211) are used to supply glue to different spray guns, and the multiple spray points opened by the spray gun are arranged and distributed along the length of the cigarette.

2. The multi-path spray gun device for a cork paper spraying system according to claim 1, characterized in that, A plurality of sealing rings (12) are provided between the central shaft (21) and the rotating channel (13), and an annular groove (14) is provided on the outer surface of the central shaft (21) and / or the inner surface of the rotating channel (13). The central shaft (21), the rotating channel (13), the two adjacent sealing rings (12), and the annular groove together form the glue supply ring.

3. The multi-path spray gun device for a cork paper spraying system according to claim 2, characterized in that, It also includes a drainage component (3), in which a drainage pipe (31) is provided, and the spray gun is installed on the drainage component (3). The drainage pipe (31) is used to circulate adhesive between the second adhesive supply component (2) and the spray gun.

4. The multi-path spray gun device for a cork paper spraying system according to claim 3, characterized in that, The drainage pipe (31) includes a first branch pipe (311) extending axially and a second branch pipe (312) extending radially, the first branch pipe (311) and the second branch pipe (312) intersecting in a cross shape.

5. The multi-path spray gun device for a cork paper spraying system according to claim 3, characterized in that, It also includes a support base (4), on which the second glue supply assembly (2) and the drainage assembly (3) are mounted. The support base (4) can drive the second glue supply assembly (2) and the drainage assembly (3) to rotate about the axis relative to the first glue supply assembly (1).

6. The multi-path spray gun device for a cork paper spraying system according to claim 5, characterized in that, A guide structure (41) is provided on the support base (4), the second glue supply component (2) and the drainage component (3) are slidably installed on the support base (4), and the guide structure (41) can guide the second glue supply component (2) and the drainage component (3) to move axially; The support base (4) is provided with an axially extending waist-shaped hole (42) in the length direction. The drainage component (3) is fixed to the support base (4) by bolts. The bolts can pass through the waist-shaped hole (42) to adjust the position of the second glue supply component (2) in the axial direction. The width of the glue supply ring is greater than the diameter of the opening of the second glue supply pipeline (211).

7. The multi-path spray gun device for a cork paper spraying system according to any one of claims 1 to 6, characterized in that, The first glue supply line (11), the glue supply ring and the second glue supply line (211) are respectively provided in three, and the spray guns are provided in five. The spray guns located at both ends are respectively supplied with glue by one second glue supply line (211), and the three spray guns located in the middle are supplied with glue by the same second glue supply line (211). The central spray gun has two spray points, while the other spray guns each have one spray point.

8. The multi-path spray gun device for a cork paper spraying system according to claim 7, characterized in that, The second glue supply assembly (2) is provided with a flange (22), and a branch pipe (221) is provided inside the flange (22), which is connected to the second glue supply pipe (211).

9. The multi-path spray gun device for a cork paper spraying system according to claim 8, characterized in that, The contact point between the scraper head (5) of the spray gun and the tipping paper is a smooth curved surface.

10. A winding and splicing machine, characterized in that, Includes the multi-path spray gun device for a cork paper spraying system as described in any one of claims 1 to 9.

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